Transformer temperature control method and system and readable storage medium

The invention discloses a transformer temperature control method and system and a readable storage medium, and the method comprises the steps: obtaining the measurement temperature of a transformer, and the measurement temperature comprises an environment temperature value and an operation temperature value; performing temperature parameter screening based on the measured temperature to remove error parameters to obtain target temperature data; temperature value judgment is carried out based on the target temperature data, temperature value comparison is carried out based on the target temperature data and different temperature grading limit values so as to carry out grading alarm, and therefore different feedback mechanisms are screened and output to corresponding user sides, the user side comprises a background equipment side corresponding to a management user and an intelligent equipment side corresponding to an operation and maintenance user; and when the temperature value in the target ...

EI40. 2 blade of silicon steel

EI40.2 blade of silicon steel is folded in turn by a plurality of E shape blade of silicon steel and the I shape blade of silicon steel and constitutes the subquadrate after inserting, and E shape length of a film A be 40.2mm, and the wide C of middle tongue is 13.4mm, and the hem width D of both sides, E are 6.7mm, and E appears the high G of piece and is 33.7mm, and the high F of tongue width is 27mm, the I piece that appears, and long A is 40.2mm, and width H is 6.7mm. The utility model discloses a blade of silicon steel, overall dimension is little, and simple structure compares in wide, the high height of E shape piece of the tongue of former EI structure series, and the transformer is with under the equal -volume condition, the increase of iron core effective sectional area, the coil number of turns of reducible transformer reduces copper line quantity more than 15%, and simultaneously, the high height of E shape piece has increased winding space, and the power capacity increase that ...

Transformer alarm method and system and readable storage medium

The invention discloses a transformer alarm method and system and a readable storage medium, and the method comprises the steps: obtaining the environment data of a position where a transformer is located based on a preset sensor group, and carrying out the parameter comparison based on the environment data and a threshold value, so as to give an alarm; operation data of the transformer are obtained, type analysis is carried out based on the operation data, and the operation data comprise control data, interface data and self-checking data; performing closed-loop detection alarm based on the control data; and/or carrying out attribute identification alarm based on the interface data; and/or performing threshold judgment alarm based on the self-checking data, wherein the self-checking data comprises a self-checking temperature value, a self-checking collision value and an operation state value. According to the invention, dangerous or abnormal information possibly generated in the normal ...

Tunnel medium-length hole smooth blasting method

MCS composite ceramic base plate LED industrial and mining lamp

MCS composite ceramic base plate LED industrial and mining lamp mainly comprises LED light source, MCS composite ceramic base plate, extrusion formula aluminium radiator and constant current source, and the LED light source welds on the MCS composite ceramic base plate, and the MCS composite ceramic base plate is fixed on extrusion formula aluminium radiator, and the linking bridge that the constant current source passes through both sides fixes on extrusion formula aluminium radiator, and a fixed bolster is connected to the constant current source bottom. The utility model discloses an extrusion aluminum product is more than die -casting aluminium as radiator, extrusion aluminum product radiating effect, adopts the MCS composite ceramic base plate to have high heat conduction, high withstand voltage, high insulating as light source base plate, MCS composite ceramic base plate, improves the luminous efficacy and the life of LED industrial and mining lamp greatly.

Device for treating landfill leachate

The device for treating the landfill leachate structurally comprises an integrated pretreatment device, an ultrasonic cavitation and electrocatalysis integrated device and a biological enhancement integrated device which are connected with one another through pipelines, so that the problem that the leachate has no recharge is effectively solved, and the leachate can be directly discharged to reach the standard; the landfill leachate treatment device is high in landfill leachate treatment efficiency, thorough in leachate treatment, free of secondary pollution to the environment, convenient to move, short in device installation period, small in occupied area, low in investment and operation cost, wide in market application prospect and convenient to popularize and use, and a skid-mounted integrated device is adopted in the landfill leachate treatment device.

Lamps and lanterns with perception and execution function

Lamps and lanterns with perception and execution function mainly comprises lamps and lanterns illumination element, management local net, control module and communication module, and control module and communication module set up inside lamps and lanterns, manages the local net and sets up control panel including perception functional unit and action executing functional unit, lamps and lanterns surface, and control module passes through communication module and links to each other with management local net, control panel and outside cloud ware and removal end respectively. The utility model discloses a regarding lamps and lanterns as the perception and carrying out the supporting body of function, lamps and lanterns become the synthesis of an album perception, communication, the relevant hardware of execution three when realizing function light effect, a lamp is multi -purpose, need not user real time monitoring and adjusts, has the installation and reforms transform the convenience, integrates ...

Preparation method and application of free nitroxide radical polymer brush polymerization inhibitor

The invention relates to a preparation method of a free nitroxide radical polymer brush polymerization inhibitor, and application of the free nitroxide radical polymer brush polymerization inhibitor in synthesis of epoxy soybean oil acrylic ester. The preparation method comprises the following steps: firstly, grafting a polyglycidyl methacrylate polymer brush on the surfaces of cross-linked polystyrene microspheres by using an electron transfer regenerated catalyst atom transfer free radical polymerization technique, and secondly, bonding tetramethyl piperidine free nitroxide radical onto the polyglycidyl methacrylate polymer brush, thereby obtaining the free nitroxide radical polymer brush. The application comprises: taking the free nitroxide radical polymer brush as a main polymerization inhibitor and a small molecule polymerization inhibitor as a polymerization inhibitor aid, thereby forming a composite polymerization inhibition system for preparing epoxy soybean oil acrylic ester. The ...

Bridge rectifier for intelligent servo transformer

The invention discloses a bridge rectifier for an intelligent servo transformer, and belongs to the technical field of electrics. The novel bridge rectifier makes a breakthrough in the conventional transistor structure in which four diodes form a single bridge; and in the novel bridge rectifier, the transistors are combined with copper bars, adopt the diodes, silicon controlled rectifiers, field effect transistors or insulated gate bipolar transistors (IGBT) and are arranged and combined according to actual needs, and components are directly welded by the copper bars to form an integral transistor module, wherein the module is tiled on a heat dissipation plate and encapsulated in an airtight shell with good heat dissipation effects to form the bridge rectifier special for the servo transformer. The bridge rectifier simplifies a manufacturing process, decreases a wire quantity, reduces labor intensity, improves production efficiency, and has the advantages of good integration effects, wiring ...

Intelligence self -adaptation meeting room lamps and lanterns

Intelligence self -adaptation meeting room lamps and lanterns, characterized by mainly comprise lamps and lanterns main part luminescence unit, lamps and lanterns light detecting element and lamps and lanterns the control unit, and lamps and lanterns main part luminescence unit, lamps and lanterns light detecting element and lamps and lanterns the control unit carry out the communication through RF radio signal each other and connect. The utility model discloses set up lamps and lanterns light detecting element and lamps and lanterns the control unit at lamps and lanterns main part luminescence unit, carry out the communication through RF radio signal and connect, can detect light environment moderate temperature, illuminance, time and human body according to detecting element, then adjust lamps and lanterns main part luminescence unit by lamps and lanterns the control unit, have that intelligent degree is high, the efficient and energy -concerving and environment -protective advantage ...

Three-dimensional target mechanical arm grabbing pose estimation method

The invention relates to the technical field of visual grabbing, and discloses a three-dimensional target mechanical arm grabbing pose estimation method which comprises the following steps: acquiring an RGB image and a depth image of a target scene, segmenting the RGB image to obtain a plurality of sub-images, encoding each sub-image, extracting image features of the encoded sub-images, and decoding the image features to obtain a three-dimensional target grabbing pose. Extracting a grabbing frame from the heat map, extracting a plurality of candidate grabbing points from the optimal grabbing area by adopting a farthest point sampling algorithm, taking the candidate grabbing points with the confidence coefficient being 1 as central points of a spherical area of the to-be-grabbed object, outwards screening out candidate grabbing points with the confidence coefficient being greater than a preset point confidence coefficient threshold value from the central points, and grabbing the to-be-grabbed ...

Multi -functional LED lamp based on mobile terminal control

Multi -functional LED lamp based on mobile terminal control, by the LED lamps and lanterns, intelligent monitoring system, the intelligent charging system, lamps and lanterns lamp pole and rest seat are constituteed, the LED lamps and lanterns set up the intelligent system standard interface, intelligent monitoring system includes the infrared surveillance camera of a plurality of arrays machine, the infrared surveillance camera machine of every array sets up the intelligent monitoring system interface, the intelligent charging system includes a multi -functional stake of charging, the multi -functional stake of charging is boxed structure, including rain -proof box and chamber door, the built -in intelligent charging mechanism of rain -proof box, intelligent vehicle detection mechanism and infrared touch panel mechanism. The utility model discloses the device collects advanced design of illumination, practicality, rest, has satisfied people daily life's needs greatly, and the seat design ...

LED lamp flash protection module

The invention provides an LED lamp flash protection module. The LED lamp flash protection module is mainly composed of a lamp flash protection module and a power supply supporting module, wherein the lamp flash protection module comprises an LED constant-current source voltage and current acquisition circuit, a single chip microcomputer control system and switching value control circuits; the LED constant-current source voltage and current acquisition circuit is a differential pressure filtering circuit which is composed of a plurality of resistors and capacitors for acquiring an analog signal; and the switching value control circuits are two control circuits, comprise an output switching-off circuit composed of a plurality of resistors and transistors, and a switch, and an input switching-off circuit composed of a plurality of resistors and transistors, and a switch. According to the LED lamp flash protection module, the lamp flash protection module is arranged between a constant current ...

Attack test method and device, electronic equipment and storage medium

The invention provides an attack testing method and device, electronic equipment and a storage medium. The attack testing method comprises the steps of obtaining equipment information of each piece of electronic equipment in a to-be-tested system; generating a system structure chart according to the equipment information of each electronic equipment; determining the nodes of which the equipment information meets a preset condition as candidate nodes; determining a plurality of candidate attack paths according to the position of each candidate node in the system structure diagram; each candidate attack path comprises at least two candidate nodes; determining a target attack path from the plurality of candidate attack paths according to a preset rule; and performing an attack test on the test system by using the target attack path. According to the attack test method provided by the invention, the target attack path can be automatically determined according to the communication connection ...

Portable all-angle safety illumination device

The invention provides a portable all-angle safety illumination device which comprises a lamp and a rotary spherical table in sequence from top to bottom. A connection device is arranged between the lamp and the rotary spherical table, an LED lamp head (1) is arranged on the upper portion of the lamp, a lamp holder (2) is arranged on the lower portion of the lamp, the LED lamp head (1) is fixed on the lamp holder (2), the connection device is arranged at the bottom of the lamp holder (2), the rotary spherical table is arranged at the bottom of the connection device, and the connection device is connected with the rotary spherical table in a 360-degree rotating mode.

Concrete as well as preparation method and application thereof

The invention relates to the technical field of concrete, and discloses concrete as well as a preparation method and application thereof. The concrete contains Portland cement, regenerated glass fiber reinforced plastic fibers and auxiliary materials, the regenerated glass fiber reinforced plastic fibers are obtained by recycling retired fan blades, and the particle size of the regenerated glass fiber reinforced plastic fibers is smaller than or equal to 50 meshes. The regenerated glass fiber reinforced plastic fiber can serve as filler to be filled in gaps of concrete aggregate and can also play a lubricating role in the concrete, so that the working performance of the concrete is improved, and the concrete has the advantages of being convenient to construct, reducing the engineering cost, saving energy, reducing emission and protecting the environment.

Autoclaved brick prepared from large-mixing-amount steel slag powder and preparation method of autoclaved brick

The invention provides an autoclaved brick prepared from steel slag powder and iron tailings. The autoclaved brick comprises the following components in percentage by weight: 22.4-67.9% of the iron tailings, 20-55% of the steel slag powder, 5-7% of cement, 7-15% of gravels and 0.1-0.6% of a hydroxy carboxylate inhibitor, wherein the water-material ratio is 0.08-0.11. Under the action of the inhibitor, a green brick is pre-maintained, so that the problem of bad stability of the autoclaved brick caused by steel slag is eliminated, and the problem that the autoclaved brick cracks during production by using a large mixing amount of the steel slag as a raw material is solved. The production process of the autoclaved brick is also simplified, the cementitious activities of cement and the steel slag are fully used, the product performance is improved, and the labor intensity and the production cost are reduced.

Non-linear optical crystal of iodic acid zinc potassium

The invention relates to a non-linear optical crystal of iodic acid zinc potassium. The iodic acid zinc potassium has a chemical formula of K2Zn(IO3)4(H2O)2 and the molecular weight of 864.74 and belongs to a monoclinic system; and the iodic acid zinc potassium has a space group C2 and unit-cell parameters are as follows: a is equal to 13.936 (6), b is equal to 7.7609(18), alpha and gamma are both equal to 90 degrees, beta is 126.75(3) degrees and Z is 1. The iodic acid zinc potassium is prepared by using a hydrothermal method. The iodic acid zinc potassium (K2Zn(IO3)4(H2O)2) has excellent non-linear optical performance and the powder second harmonic generation (SHG) coefficient of the iodic acid zinc potassium is 2.3 times that of KDP (KH2PO4) and is equivalent to that of LBO (lithium triborate).

Hydraulic simulator platform free from washout algorithm in direction of rotation on axis

The invention discloses a hydraulic simulator platform free from a washout algorithm in the direction of rotation on a Z axis. A worm gear and an annular guide rail are fixed coaxially at the upper end of a stationary platform foundation sequentially; the lower ends of sliding blocks in six sets of moving components are slidably connected with the annular guide rail respectively; the upper end of the sliding block in each set of moving components is connected with a sliding block fixing plate; a hydraulic motor is mounted on a first fixing plate on one side of the sliding block fixing plate; an output shaft of the hydraulic motor is connected with a worm; the worm is meshed with the worm gear; pulleys, adhered to convex edges of internal and external surfaces of the annular guide rail, are mounted in four corners on the lower side of the sliding block fixing plate respectively; and control lines of a control box mounted in the stationary platform foundation are connected with six servo ...

Multifunctional LED (Light Emitting Diode) lamp based on mobile terminal control

A multifunctional LED (Light Emitting Diode) lamp based on mobile terminal control is composed of an LED lamp, an intelligent monitoring system, an intelligent charging system, a lamp rod and a relaxation seat, wherein the LED lamp is provided with an intelligent system standard interface; the intelligent monitoring system comprises a plurality of array infrared monitoring cameras; each array infrared monitoring camera is provided with an intelligent monitoring system interface; the intelligent charging system comprises a multifunctional charging pile; the multifunctional charging pile is in a box type structure and comprises a rainproof box body and a box door; the rainproof box body is internally provided with an intelligent charging mechanism, an intelligent vehicle detection mechanism and an infrared touch control mechanism. The multifunctional LED lamp adopts an advanced design integrating illumination, practicability and relaxation; the requirements of daily life of people are greatly ...

Method for preparing waterproof thermal insulation type recycled aggregates

The invention uses aerated concrete particles as a core, and uses a method that the surfaces of the aerated concrete particles are coated with inorganic and organic materials to modify and process, thereby solving the problems that aerated concrete is high in water absorption and poor in mechanical property, improving waterproof performance, and preparing lightweight recycled aggregates with waterproof and thermal insulation properties.

Hydraulic simulator platform free from washout algorithm in direction of rotation around Z axis

The invention discloses a hydraulic simulator platform free from a washout algorithm in the direction of rotation on a Z axis. A worm gear and an annular guide rail are fixed coaxially at the upper end of a stationary platform foundation sequentially; the lower ends of sliding blocks in six sets of moving components are slidably connected with the annular guide rail respectively; the upper end ofthe sliding block in each set of moving components is connected with a sliding block fixing plate; a hydraulic motor is mounted on a first fixing plate on one side of the sliding block fixing plate; an output shaft of the hydraulic motor is connected with a worm; the worm is meshed with the worm gear; pulleys, adhered to convex edges of internal and external surfaces of the annular guide rail, are mounted in four corners on the lower side of the sliding block fixing plate respectively; and control lines of a control box mounted in the stationary platform foundation are connected with six servo motors ...

Order management system based on MVC development platform

The invention discloses an order management system based on an MVC development platform, and the system comprises a sales terminal which is used for a salesman to establish an order, and carries out the warehousing and warehousing of a gift based on the MVC platform; the planning end captures the order to the MVC platform, selects the printing template of the corresponding order to print the flow list, modifies the gift related information according to the order placing condition of the sales end, and selects the corresponding printing template to print the flow list; the production end is used for producing gifts according to the process sheet information; and the management end is used for performing daily comparison on the work order quantity and the completion rate by management personnel. According to the present invention, the design planning end is used as an intermediate connection link, and the product information is input in real time through the gift input and output report unit ...

Hydraulic simulator platform infinitely rotating around Z-axis

The invention discloses a hydraulic simulator platform infinitely rotating around a Z-axis. The upper end of a static platform foundation is coaxially provided with an annular gear and an annular guide rail in sequence; the lower ends of slide blocks in six moving members are in sliding connection with the annular guide rail respectively; the upper end of the slide block in each moving member is connected with a slide block fixing plate; a hydraulic motor is mounted on the lower end of an L-shaped motor fixing plate at one side of the slide block fixing plate; an outer gear is sleeved on a transmission shaft and engaged with the annular gear; four corners at the lower side of the slide block fixing plate are respectively provided with pulleys laminated with the convex edges of the internal and external side surfaces of the annular guide rail; and the control wires of a control box mounted in the static platform foundation are connected with six servo motors respectively. The simulator platform ...

Servo power module of wisdom

Servo power module of wisdom, by MCU host system, analog quantity collection module, LED display module and bridge are piled thick film circuit and are constituteed, analog quantity collection module links to each other with MCU host system, the LED display module passes through the PORT COM and is connected with MCU host system, bridge heap thick film circuit passes through the high power switch pipe and is connected with MCU host system, the bridge is piled thick film circuit and is piled the tiling on the heating panel by a plurality of half -wave rectification bridges, the half -wave rectification bridge is piled and comprises big power diode and copper bar, form by the copper bar welding between the big power diode. The utility model discloses not only the effectual manufacture craft of having simplified has reduced the wiring volume, has reduced intensity of labour, and in addition the power display of intelligent servo driver's input is more directly perceived moreover, the utility ...

Adaptive transformer control method and system and readable storage medium

The invention discloses a self-adaptive transformer control method and system and a readable storage medium, and the method comprises the steps: obtaining the measurement temperature of a transformer, and the measurement temperature comprises an environment temperature value and an operation temperature value; based on comparison between the measured temperature and a self-adaptive temperature limit value, a preset temperature control device is controlled to work correspondingly, and the temperature control device comprises a cooling device and a heating device; the operation degree value of the transformer is obtained, the corresponding transformation device is controlled to be started for operation in a self-adaptive mode based on the operation degree value, and when the operation degree value exceeds the alarm degree value, the alternative transformation device is controlled to be started for operation in a self-adaptive mode and an alarm prompt is output. According to the invention, ...

Water-resistant gypsum base wall repair material

The invention relates to a water-resistant gypsum base wall repair material. The water-resistant gypsum base wall repair material comprises, by weight, 100 parts of desulfurated building gypsum, 5.1-10.5 parts of compound additive A, 10-20 parts of manganese slag powder, 5-10 parts of cement, 0.1-0.6 part of water-retaining agents and 0.3-0.7 part of water reducing agents. The compound additive A has delayed coagulation, water resistance and adhesion enhancement effects, and the acquired gypsum base wall repair material is reasonable in operation time and good in water resistance, adhesion performance, mechanical property and construction performance. Due to the fact that a lot of industrial by-products and waste are used, the water-resistant gypsum base wall repair material has the advantages that environment friendliness is achieved and the ecological environment is protected.

Fuel feeding system of micro diesel oil ignition direct-injection natural gas engine and control method thereof

The invention discloses a fuel feeding system of a micro diesel oil ignition direct-injection natural gas engine and a control method of the fuel feeding system. The fuel feeding system comprises an electronic control common rail ignition diesel oil feeding device and an electronic control common rail high-pressure direct-injection natural gas feeding device, wherein the electronic control common rail ignition diesel oil feeding device and the electronic control common rail high-pressure direct-injection natural gas feeding device are independently controlled through an electronic control system,the electronic control system supplies ignition diesel oil with certain pressure to the natural gas engine in an adjusting mode by having control over a diesel oil pressure adjusting module of the electronic control common rail ignition diesel oil feeding device according to the working condition of the natural gas engine, and the electronic control system supplies main jet natural gas with certain ...

Thin coal seam fully-mechanized coal mining accessory transport vehicle

The invention relates to a transport trolley, in particular to a thin coal seam fully-mechanized coal mining accessory transport vehicle. The work space of a thin coal seam fully-mechanized coal mining working surface is generally small, the work space for workers is also very small, equipment matching is compact as well, and therefore accessories can not be transported conveniently when equipment is overhauled. High labor intensity needs to be borne by the workers, and due to the fact that a large number of personnel are needed, large potential hazards exist in terms of safety. The thin coal seam fully-mechanized coal mining accessory transport vehicle comprises wheels, a frame, a compartment and a brake, and is characterized in that the wheel distance of the wheels is the same as the distance between baffles on the two sides of a scraper conveyer, a flange is arranged inside each wheel, and the flanges are clamped inside the baffles of the scraper conveyer. The thin coal seam fully-mechanized ...

Can monitor satellite positioning LED street lamp

Can monitor satellite positioning LED street lamp mainly comprises lamp pole, lamp body and lamp holder, and the lamp holder is packaged with the LED lights pearl, and the lamp holder bottom sets up the infrared surveillance camera of array machine, and the lamp holder top sets up satellite positioning mechanism, and the lighting system of lamp holder sets up the intelligent system standard interface. The utility model provides the efficiency of high street lamp subassembly processing mishap, the probe of guaranteeing to make a video recording has reduced manpower, material resources etc. The monitoring project's that can the at utmost realizes making a video recording wireless monitoring and automated management, simultaneously can provide the navigation feature of parking for the parking area through satellite positioning mechanism.

Preparation method for polymer brush supported TEMPO catalyst system

The invention relates to a preparation method for a polymer brush supported TEMPO catalyst system. Specifically, the method includes the steps of: 1) conducting soap-free emulsion polymerization to prepare a surface hydroxylated crosslinked polystyrene (PS) microsphere; 2) loading an ATRP initiator to the PS microsphere surface through O-acylation reaction of 2-bromoisobutyryl bromide and hydroxyl; 3) taking the PS microsphere as a macroinitiator, grafting a structure controllable polymer brush containing methacrylic acid-2, 2, 6, 6-tetramethyl-4-piperidyl ester (TMPM) to the microsphere surface through an ARGETATRP technology; and 4) oxidizing the piperidyl of TMPM into free radical of nitroxide by m-chloroperoxybenzoic acid (mCPBA) so as to load the TEMPO to the polymer brush in the form of a covalent bond. The polymer brush supported TEMPO catalyst system can employ O2 as the oxidizing agent to efficiently catalyze the selective oxidation reaction of alcohol, is convenient to recycle ...

Anion purifies LED street lamp

Anion purifies LED street lamp, including lamps and lanterns connecting cylinder and the LED lamps and lanterns module of a plurality of connection on the lamps and lanterns connecting cylinder, LED lamps and lanterns module bottom sets up the LED light source, and every LED lamps and lanterns module embeds an anion generator, anion generator's electronic impulse oscillation circuit and carbon brush most advanced link to each other of setting at LED lamps and lanterns module top. The utility model discloses a low temperature plasma technique in the lamp illumination while, through the anion of the miniature anion generator abrupt release high concentration in inside, purifies smoke and dust and the particulate pollution of suspension in the air rapidly, can disinfect simultaneously to play the effect of air -purifying and prevent pollution.

Phase change energy storage aggregate and preparation method thereof

The invention provides a method for preparing a phase change energy storage aggregate by using waste building autoclaved aerated concrete. The aggregate comprises the following components in parts by weight: 10 parts of waste aerated concrete particles, 7-10 parts of phase-change material, 1.7-2.7 parts of polymer emulsion, 4.5-5.5 parts of steel slag powder, 1.2-1.8 parts of cement, 2-2.5 parts of water, 1.5-2 parts of building plaster and 3-3.8 parts of manganese slag powder. The obtained phase change energy storage aggregate is high in strength and good in affinity with inorganic adhesive materials; the phase-change material is not easy to leak and durable in use; the phase change energy storage aggregate can be used for preparing mortar and concrete, and producing various building blocks or panels, and the like.

Grinding device for moxa cone cutter

The utility model discloses a grinding device for a moxa cone cutter. The device is arranged on the surface of a workbench of the moxa cone cutting machine. The grinding device is provided with a base. A cutter groove for the cutter to pass through is formed in the center of the base; a first grinding mechanism and a second grinding mechanism are arranged on the two sides of the cutter groove correspondingly. The first grinding mechanism and the second grinding mechanism each comprise a half worm wheel arranged on the surface of the base and a supporting plate fixed to one side of the straightface of the half worm wheel. A worm is meshed with the cambered surface side of the half worm wheel to form a half worm and gear mechanism, the worm can rotate on the surface of the base to drive thehalf worm wheel to rotate, a grinding wheel is fixed to the upper portion of the supporting plate, and the axial direction of the grinding wheel is perpendicular to the axial direction of the half worm ...

Tunnel medium-length hole smooth blasting method

The invention provides a tunnel blasting method, in particular to a medium-length hole smooth blasting method. The method can not only realize good medium-length hole smooth blasting effect and facilitate the downhole operation of a coal mine, but also realize the more extensive applicability. The portable energy directional smooth blasting technology and the combined cutting blasting technology are adopted in the method. The tunnel blasting method mainly solves the two key technologies of the smooth blasting technology and the cutting blasting technology, and the full-section blasting process and the parameters are set on the basis of the two key technologies, thereby achieving the medium-length hole smooth blasting effect that the desired hole depth is not more than 3m. To this end, theportable energy directional smooth blasting technology is adopted, thereby realizing the good smooth blasting effect under the conditions of simple operation and low cost; and the combined cutting blasting ...

Power transformer's pin configuration

Power transformer's pin configuration including the skeleton coil of transformer and the lead -out wire of connecting state net power supply, set up the wire casing on the skeleton coil, set up polyester film on the lead -out wire for the distance of ply -yarn drill in skeleton groove is drawn in the restriction, sets up the heat shrinkage bush on the lead -out wire. The utility model discloses a pin configuration need not go to distinguish the colour of lead wire or the direction of working of plastics with the naked eye, has avoided the error in length of manual operation location lead wire position yet, and many lead -out wires can be fixed a position simultaneously moreover, labour saving and time saving, and easy operation, whole process can be accomplished fast, has improved production efficiency greatly.

EE33 embedment transformer

EE33 embedment transformer including skeleton, coil winding, blade of silicon steel group and shell, is equipped with the cold L needle of inserting on the side of skeleton, the enameled wire winding cold insert the L needle on, the primary input end that the framework top both sides were equipped with the transformer runs through the window of whole skeleton with secondary output end, blade of silicon steel group, packs epoxy resin sealing between coil winding and shell, it forms to weld forms to inserting by a plurality of E shape blade of silicon steel in blade of silicon steel group. The utility model discloses a blade of silicon steel jettisoning traditional EI fold the mode of inserting in turn, adopt the mode of EE piece to inserting, increased the winding space of skeleton, and the EE blade of silicon steel adopts the preparation of advance welding process, guaranteed the stability and the uniformity of product, improved the utilization ratio of the blade of silicon steel, can satisfy ...

High-speed insertion device for cutting terminal

The invention discloses a high-speed insertion device for cutting a terminal, and belongs to the technical field of plug connector devices. The high-speed insertion device comprises a machine frame. A feeding device, a clamping and cutting device, a forward-sending device and an insertion device body are arranged on the machine frame. The clamping and cutting device comprises a forward-sending sliding block, wherein a clamping arm and a cutting arm are designed on the forward-sending sliding block, and a clamping jaw is elastically connected to one end of the clamping arm. The insertion device body comprises an insertion through hole, wherein an insertion rod is arranged in the insertion through hole. By means of the high-speed insertion device, the terminal can be clamped and cut through one device, manufacturing cost is reduced, and production efficiency is improved; elastic clamping is conducted on the terminal in the whole process, and therefore damage to the appearance of the terminal ...

Light hydraulic support for cannon sampled thin coal layer

Negative sequence impedance parameter estimation method for locating three-phase unbalanced disturbance source

The invention relates to a negative sequence impedance parameter estimation method for locating a three-phase unbalanced disturbance source. The method comprises the steps that (1) measuring data are collected; (2) a multi-moment KVL equation is built; (3) sampling data unchanged on a system side are selected based on a three-point method; (4) sampling data with fluctuation on a load side are selected based on the load fluctuation rate; (5) an objective function is built to solve system negative sequence equivalent impedance parameters. According to the method, based on PCC multi-moment voltage and current sampling data, negative sequence impedance is estimated by solving the multi-moment KVL equation, the sampling data do not need to be synchronized, the influence of system frequency changes is avoided, and compared with a method with the sampling data needing to be synchronized, the data sampling process is more flexible and convenient. Data with the fluctuation on the load side and the ...

Method for preventing power supply inserting generating electric spark

The invention provides a method which prevents arcing when a power supply is connected with a computer, a financial tax-control POS machine and a tax-control POS machine which requires an external power supply. The method is that a discharger F is arranged between a power supply input connector J1 and a power supply input terminal of a switch power supply chip IC; damping and delaying switching are carried out by the discharger F and the switch power supply chip IC to the surge voltage of the power supply, thus preventing arcing and damaging elements in electronic equipment when the power supply is connected. The method of the invention is applied to electronic products which have high requirement to the power supply such as financial tax-control POS machines, tax-control POS machines, financial POS machines and various commercial POS machines, etc.

Rapid resistance brazing method with carbon material middle layer as heat source

The invention relates to a rapid resistance brazing method for ceramic materials, in particular to a rapid resistance brazing method with a carbon material middle layer as a heat source. The problems that traditional brazing is low in welding efficiency, high in cost and large in damage to temperature-sensitive base metal are solved. The method comprises the steps of 1, preprocessing and assembling; and 2, performing resistance brazing by taking the carbon material middle layer as a heat source. The method is used for rapid resistance brazing with the carbon material middle layer as a heat source.

Endless rope speed regulation mechanical winch driving device used for mine

The invention discloses an endless rope speed regulation mechanical winch driving device used for a mine, belonging to a mine transporting device which mainly serves as an underground roadway wire rope traction system. Equal-power double-speed electromotor speed regulation is used for replacing traditional mechanical speed regulation and variable frequency motor speed regulation. The speed regulation device of the invention adopts simultaneously float of high-velocity planet carrier and low-velocity sun gear; a high-speed internal gear and a low-speed internal gear are connected with a rollerinto a whole to realize power division, an electro hydraulic control system is combined for carrying out friction machinery soft start and remote operation control of the drive device. At working time, the invention can arbitrarily switch high speed and low speed without halting. The invention has the advantages of low cost, small noise, compact structure, convenient operation, safety and reliability ...

Thin coal seam belt conveyor tail safety protection device

The invention relates to a thin coal seam belt conveyor tail safety protection device. Certain potential safety hazards are brought to personal safety of workers when a belt directly strides over a belt conveyor tail frame in the running process. In addition, the belt conveyor tail frame automatically migrates. Therefore, the thin coal seam belt conveyor tail safety protection device is characterized in that the thin coal seam belt conveyor tail safety protection device comprises a large protection fence and a small protection fence, the large protection fence and the small protection fence are respectively composed of a rectangular frame and a metal net, each metal net is fixed to the corresponding rectangular frame, an insertion groove is formed in the front side wall of the rectangular frame of the large protection fence, the corresponding small protection fence is inserted into the insertion groove and can move forward and backward along the insertion groove, the thin coal seam belt ...

Process for preparing load-bearing foam concrete blocks

The invention relates to a process for preparing load-bearing foam concrete blocks. The preparation process comprises the following steps of: metering 10 to 60 parts of mine tailing, 0 to 60 parts of pulverized fuel ash, 0 to 40 parts of slag, 20 to 60 parts of cement, 0.1 to 1 part of excitant and 0 to 0.6 part of fibre in proportion and then mixing the materials uniformly; adding water in a water-solid ratio of between 0.38 and 0.48 and stirring the mixture into an uniform slurry; then, adding vesicant foams prepared in advance and stirring continuously to ensure that the foams are uniformly dispersed in the slurry; moulding by casting and maintaining the blocks at room temperature for 16 to 48 hours; and maintaining the blocks after demoulding at the normal temperature for 28 days or in steam at a temperature between 60 and 100 DEG C for 8 to 24 hours to prepare the load-bearing foam concrete blocks. The load-bearing foam concrete blocks have good heat preservation property, high intensity ...

Lamp with perception and execution functions

A lamp with perception and execution functions mainly comprises a lamp lighting unit, a management local area network, a control module and a communication module, wherein the control module and the communication module are arranged in the lamp; the management local area network comprises a perception functional unit and an action execution functional unit; a control panel is arranged on the surface of the lamp; the control module is connected with the management local area network and the control panel, as well as a cloud server and a mobile end, which are arranged outside, through the communication module. According to the lamp provided by the invention, the lamp is used as a carrier of the perception and execution factions, and is a complex having not only a first lighting function but also functions of related perception, communication and execution hardware; the lamp has multiple purposes, does not need real-time monitoring and adjusting by a user, and has the advantages of being convenient ...

Electric system three-phase imbalance disturbance source positioning method

The invention relates to an electric system three-phase imbalance disturbance source positioning method. The method includes the steps of firstly, establishing an equivalent circuit diagram for positioning a three-phase imbalance disturbance source; secondly, calculating negative-sequence voltages produced by the upstream side and the downstream side at a public connection point; thirdly, calculating imbalance indexes contributed by the negative-sequence voltages on the basis of a vector projection method; fourthly, positioning the imbalance source. By means of the method, the three-phase imbalance disturbance source in an electric system can be effectively positioned according to three-phase voltage and current data obtained at the public connection point through measurement; the position of the three-phase imbalance disturbance source is judged through the phasor projection method based on the negative-sequence voltages produced by the upstream side and the downstream side at the public ...

Coal blocking device for fully-mechanized coal mining machine of thin seams

The invention relates to a coal mining device and particularly relates to a coal blocking device for a fully-mechanized coal mining machine of thin seams. Since a middle groove of a thin seam mining working surface scraper conveyor is relatively shallow, a coal passing space is small when the coal mining device is assorted with a thin seam mining machine, and meanwhile, coal overflows from a chute in a coal loading process to increase the float coal cleaning work amount. The coal blocking device for the fully-mechanized coal mining machine of thin seams comprises a spill plate, as well as a connecting base, a walking part and a side connecting plate, wherein one end of the connecting base is connected with the coal mining machine, the other end of the connecting base is connected with the walking part, the two ends of the base on the bottom of the walking part tilt up to form piston shoe shapes, a gear is arranged in the walking part, and is engaged with a scraper conveyer gear rail; the ...