Gas pipeline corrosion risk evaluation method and device based on corrosion control unit

The invention provides a gas pipeline corrosion risk evaluation method and device based on a corrosion control unit, and the method comprises the steps: obtaining data which comprises gas pipeline basic data, environment detection data, anti-corrosion layer detection data, cathode protection detection data, stray current interference data, environment detection data and the like; dividing corrosion control units according to the data; performing risk evaluation on corrosion of a single test pile in each corrosion control unit; and comprehensively evaluating the corrosion risk of the corrosion control unit. According to the method, various anti-corrosion elements and anti-corrosion system operation parameters of the pipeline are comprehensively considered, the overall corrosion risk and anti-corrosion effect grading judgment method of the corrosion control unit is established, the overall anti-corrosion effects of different corrosion control units can be compared, and high-corrosion risk ...

Process and system for preparing rich oxygen and high-purity oxygen

The invention relates to the field of three-tower low-temperature rectification, and provides a process and system for preparing rich oxygen and high-purity oxygen, and the system comprises a purification system, a pressurization expansion system and a rectification system; the rectification system comprises a low-temperature cold box heat exchanger, a low-pressure nitrogen tower, a subcooler, a low-pressure nitrogen tower condenser, a high-pressure nitrogen tower, an upper tower and a high-purity oxygen tower; according to the system, equipment is stable and safe, products are diversified, and rich oxygen with the purity of 80%-85%, high-purity oxygen with the purity of 99.999%, pressure nitrogen and liquid nitrogen can be produced at the same time; the method can be applied to the fields of metal smelting, solid waste recovery, new energy manufacturing, oxygen-enriched combustion and the like.

Testing device and testing method for thermal shock resistance test of ceramic tubular membrane tube

The invention discloses a ceramic tubular membrane tube thermal shock resistance test device and a test method.The test device comprises a tubular furnace and a moving mechanism which are arranged side by side, the moving mechanism comprises a motor, a lead screw connected with the output end of the motor and a lead screw nut matched with the lead screw, and a sliding block is fixedly connected with the lead screw nut arranged on the lead screw in a sleeving mode; the slide block comprises a clamp locking mechanism for fixing a membrane tube to be tested; a thermocouple probe of the temperature measuring device is arranged in the extension direction of the central axis of the tubular furnace to the motor; and air cooling equipment for supplying air to the to-be-tested membrane tube is mounted through the support frame. The testing device for the thermal shock resistance test of the ceramic tubular membrane tube is suitable for long-rod-shaped tubular membrane tubes, and is simple to operate ...

Anti-integral saturation method and device for override control, setting and medium

The invention provides an anti-integral saturation method and device for override control, a setting and a medium, and belongs to the technical field of override control, and the method comprises the steps: S1, inputting control signals outputted by at least two PID controllers to corresponding operation modules; s2, the operation module carries out operation processing on the control signal output by the corresponding PID controller and then outputs the control signal to a selector; s3, selecting one of the at least two PID controllers by the selector, taking the output of the operation module corresponding to the selected PID controller as a target control signal, and outputting the target control signal to an execution mechanism; and S4, feeding back the control signal received by the execution mechanism to the operation module corresponding to the unselected PID controller. The method has the beneficial effects that the instruction actually received by the execution mechanism is fed ...

Device and method for detecting gas permeability of polymeric membrane

The invention relates to gas permeability detection equipment and method for a polymeric membrane, the gas permeability detection equipment comprises a fixing device, a power device and a detection device.The fixing device comprises a barrel, a net barrel, a gas pipe, a first attaching piece and a second attaching piece, an annular air inlet cavity is formed between the outer circumferential surface of the cylinder and the inner circumferential surface of the net cylinder, the two ends of the air inlet cavity are closed, the outer circumferential surface of the net cylinder is used for being surrounded and covered by the polymeric membrane, the first attaching piece is used for connecting the two sides of the polymeric membrane in the length direction, and the second attaching piece is arranged in the circumferential direction of the net cylinder and is used for attaching the polymeric membrane to the net cylinder. The second attaching piece is used for attaching and fixing the width side ...

Argon recovery device integrating high-purity nitrogen and improving efficiency and use method of argon recovery device

The invention relates to a gas recovery method. The invention provides a synergistic argon recovery device integrating high-purity nitrogen. The synergistic argon recovery device comprises an argon compressor, a heat regenerator, an electric heater, a catalytic reactor group, a water cooler, an argon pre-cooling purification system, a rectification system, a synergistic device, an air compressor and an air pre-cooling purification system, by arranging the catalyst and the getter in the catalytic reactor group, CO and O2 can be removed at the same time, dangerous gases such as hydrogen do not need to be introduced, dirty argon at the top of the refined argon tower is purified by the synergistic device and then returns to the front end of the argon compressor, and meanwhile, a rectified byproduct nitrogen is obtained, so that the rectification efficiency is improved, the process is simplified, and the production cost is reduced. And the recovery rate of the device is improved while the operation ...

Verification device for concrete defect detection method

The invention relates to the technical field of concrete testing devices, in particular to a concrete defect detection method verification device which comprises a base and further comprises a testing frame fixedly mounted on the base; the sample frame is connected with the test rack, a plurality of test samples are placed in the sample frame, and the test samples comprise normal samples and defect samples; wherein the number of the defect samples is not less than two, defect positions are arranged in the defect samples, the defect samples are randomly placed in the sample frame, the number of the normal samples is not less than twenty, and the normal samples are placed in the rest of the sample frame. The operation is convenient, the use experience is good, and the detection precision is improved.

Method for forming multilayered patterns on aluminum composite board surface

High pressure acetylene pipeline

The utility model provides a high pressure acetylene pipeline, includes that straight tube, elbow, tee bend, flange, valve, unloading are led and drenches the device, unloading is led and is drenched the device and include vertical pipe, and vertical pipe is equipped with protector through the connecting plate, and protector is located the top of vertical pipe, and protector comprises the connecting rod of sleeve, sombrero and connecting sleeve and sombrero, the sleeve with vertical pipe coaxial and cover the mouth of pipe of vertical pipe apart from mouth of pipe 20cm's position and with vertical shroud firmly, the sombrero setting telescopic top just apart from sleeve 50cm, the sombrero grows to than the sleeve edge and lacks 10cm, relation below the diameter d apart from h, telescopic diameter D and vertical pipe between sleeve peak and the vertical tub of mouth of pipe satisfies: arctan [ (D2+d2) h ] <, 15 the degree. The utility model discloses can endure 25MPa's operating pressure ...

Timber pulls protection architecture

The utility model relates to a timber pulls protection architecture, including timber and haulage rope, haulage rope one end is binded and is god forward with pulling timber at ligneous front end, be located ligneous front end detain be equipped with before the big protective cap in little back, the drawing end of haulage rope has the protective cap front end to wear out. This timber pulls protection architecture can reduce the timber resistance that advances, and can cross the barrier of a take the altitude, simple manufacture simultaneously, and low cost, the reliable operation, the effect is obvious, improves production efficiency greatly.

Tail gas pressure swing adsorption oxygen production device and method for cryogenic nitrogen production equipment

The invention relates to a tail gas pressure swing adsorption oxygen production device and method for cryogenic nitrogen production equipment. The input end of the air filter is connected with the air inlet through a pipeline; the input end of the air compressor is connected with the output end of the air filter through a pipeline; the oxygen production unit is arranged at the waste gas exhaust port of the nitrogen condenser, so that the exhausted nitrogen-oxygen mixed waste gas can be recycled, high-purity oxygen in the nitrogen-oxygen mixed waste gas can be extracted and produced, the utilization rate of the gas is increased, the power consumption cost of oxygen production is reduced, and the economic benefit is considerable; a plurality of nitrogen adsorbers are also arranged during oxygen preparation, and adsorption can be performed through other nitrogen adsorbers in a regeneration working condition when a single nitrogen adsorber is saturated in adsorption, so that uninterrupted production ...

Heald frame for band weaving machine

Method for inspecting panel for detecting and colored filter

The invention mainly relates to a method for inspecting a colored filter, in particular to a method for inspecting a panel applied to a liquid crystal display and used for detecting and the colored filter. A device for inspecting the panel for detecting comprises a liquid crystal layer, a plurality of tin indium oxide electrodes, a plurality of secondary picture elements and a backlight module with a white light source, wherein the liquid crystal layer is clamped between an upper glass substrate and a lower glass substrate; the secondary picture elements are deployed on one side of the lower glass substrate and are smaller than the secondary picture elements of the colored filter to be detected; and the backlight module is deployed on the other side of the lower glass substrate. Moreover,the device for inspecting the colored filter is provided with a first photoresistor, a second photoresistor and a panel for detecting, wherein the panel corresponds to the colored filter to be detected; ...

High -efficient radiating high frequency switching power supply

The utility model relates to a high -efficient radiating high frequency switching power supply, including aluminum shell, circuit board, transformer and output inductance, aluminum shell includes casing and lower casing, supreme stacking is down followed to circuit board, transformer and output inductance go up between casing and the lower casing, be connected through first flexible heat conducting insulation sheet between output inductance and the last casing, the circuit board with be connected through second flexibility heat conducting insulation sheet between the casing down, this technical scheme stacks at last casing circuit board, transformer and output inductance under and between the casing for transformer and output inductance be because of the produced heat of self loss, give off aluminum shell through laminated structure and the transmission of flexible heat conducting insulation sheet on, has improved high frequency switching power supply's thermal diffusivity, and has hadbetter ...

Hydrogen production equipment, gas-liquid separation device of hydrogen production equipment and separation method of electrolyte and hydrogen

The invention discloses hydrogen production equipment, a gas-liquid separation device of the hydrogen production equipment and a separation method of electrolyte and hydrogen, the gas-liquid separation device comprises a tank body, a down-flow assembly and a wire mesh dredging assembly, an inlet is formed in the middle of the tank body, and a hydrogen outlet is formed in the top of the tank body; a treatment cavity communicated with the inlet and the hydrogen outlet is further formed in the tank body, the flow descending assembly is formed in the treatment cavity and kept above the inlet, a flow descending space and a flow separation cavity are formed in the part, located above the inlet, of the treatment cavity of the flow descending assembly, and a gas-liquid primary separation space is formed in the treatment cavity and located below the flow descending assembly of the flow descending assembly; at least one communicating hole and a communicating channel are formed in the flow reducing ...

Spiral driving mechanism for steel wire rope

The invention relates to a spiral driving mechanism for a steel wire rope. The spiral driving mechanism comprises a bracket, wherein an inlet and an outlet for the steel wire rope to pass through are formed on the middle axes of a left side plate and a right side plate of the bracket; an upper bracket plate and a lower bracket plate of the bracket can move upwards and downwards relative to the left side plate and the right side plate of the bracket; the bracket can rotate relative to the steel wire rope; the inner side face of the upper bracket plate is provided with a plurality of rotatable upper rollers; the inner side face of the lower bracket plate is provided with a plurality of rotatable lower rollers; the upper rollers and the lower rollers are distributed in a staggered way; the upper rollers and the lower rollers are matched with each other to compress and convey the steel wire rope. According to the spiral driving mechanism, a plurality of groups of rollers which are arranged ...

Vacuum pump sealing soft water recovery device of vacuum pressure swing adsorption oxygen generation system

The invention relates to a vacuum pump sealing soft water recovery device of a vacuum pressure swing adsorption oxygen generation system, which comprises a water tank, a wet Roots vacuum pump, a steam-water separator and a collecting water tank which are connected in sequence, the collecting water tank is connected with the water tank through a conveying pipe, and a conveying pump is arranged on the conveying pipe; the water tank is connected with the wet-type roots vacuum pump through a water inlet pipe, and the water inlet pipe is provided with an electromagnetic valve used for controlling connection and disconnection of a water path. The device has the effects of recycling sealed soft water and saving resources.

Frictional winding drum of curved pulley groove

The invention discloses a frictional winding drum of a curved pulley groove. The frictional winding drum comprises a frictional winding drum body, wherein the circumferential drum surface of the frictional winding drum body is provided with the curved pulley groove. The curved pulley groove is unfolded to be a continuous curve along the circumferential drum surface of the frictional winding drum body; the curved pulley groove is unfolded to be a continuous partially-tangent arc or sine curve along the circumferential drum surface of the frictional winding drum body. A through hole with a key slot is formed in the middle of the frictional winding drum, and the two end planes of the frictional winding drum are provided with ring grooves between the circumferential drum surface and the through hole. The wrap angle of a rope twisted on the winding drum can be increased by more than 20% through the curved pulley groove. The frictional traction can be generated through the curved pulley groove ...

Tower and automatic assembling method thereof

The automatic assembling method comprises the steps that when a force dispersion plate abuts against the other closed end, opposite to an opening, of a tower body, a movable distance measuring assembly is driven to move to abut against the opening of the tower body so as to determine an initial position, the movable distance measuring assembly is movably installed on a push rod, and then the movable distance measuring assembly is driven to move to abut against the opening of the tower body so as to determine the initial position. The driving component moves towards the direction far away from the tower body, so that a space for mounting a filler is avoided; pushing a filler which is borne on an arc top surface of a static support table and is axially coaxial with the force dispersion plate to move towards the tower body through a driving component until the distance between the dynamic distance measurement assembly and the open end part of the tower body is equal to the distance between ...

Text classification method and device in pipe network field, electronic equipment and medium

The invention relates to a text classification method and device in a pipe network field, electronic equipment and a medium. The method comprises the steps of obtaining a to-be-expanded dictionary in the pipe network field; for each title sentence, determining a candidate entry corresponding to the title sentence; for each candidate entry, according to a basic background corpus of the pipe network field and the candidate entry, expanding the candidate entry to obtain a plurality of target entries; and determining a classification corpus according to each target entry corresponding to each candidate entry in each candidate entry and the category corresponding to each target entry, so as to determine a target category of the to-be-classified text according to a classification model obtained by training the classification corpus. By means of the method, on the premise that samples are limited, the accuracy of the classification model is improved, in addition, the requirements for real-time ...

Method for forming multilayered patterns on aluminium composite board surface

This invention discloses a method to form multilevel pattern on the aluminum compound board surface, which comprises the following steps: providing one aluminum compound material metal board materials and forming first ink pattern on the metal surface; making first etching on the metal board to form first pattern on the shielding area of the first ink pattern; forming second ink pattern on the metal surface; making second etching on the metal board to form second pattern on the shielding area of the second ink pattern; removing the first and second ink patterns; processing the metal board by positive electrode and sealing its opening.

Argon recovery equipment for single crystal furnace

The invention relates to single crystal furnace argon recovery equipment which comprises a dust removal device, a cooling separation device, an adsorption device, a carbon removal device, a deoxidation tower and a purification tower which are sequentially connected, the dust removal device comprises a square tank body, a filter membrane and a particle collection mechanism, a gas inlet pipe is arranged at the upper part of the tank body, and a gas outlet pipe is arranged at the lower part of the tank body; the particle collecting mechanism comprises a first driving assembly, a winding and unwinding roller and a transfer film, a containing groove body is formed in the outer portion of the tank body, an adhesive layer is arranged on the lower surface of the transfer film, a release layer is arranged on the upper surface of the transfer film, one end of the transfer film is fixedly connected with the containing groove body, and the other end of the transfer film is wound and fixed to the winding ...

Stacked transistor arrangement and process for manufacturing same

A stacked transistor arrangement and a process of manufacturing the same are provided. The switching electrodes of the first transistor chip and the second transistor chip are accessible on opposite sides of the first transistor chip and the second transistor chip. The first transistor chip and the second transistor chip are stacked on each other. The switch electrodes on the two adjacent sides of the transistor chips are coupled together through a conductive layer located between the first transistor chip and the second transistor chip. Switching electrodes on opposite sides of adjacent sides of the first transistor chip and the second transistor chip are coupled to the lead frame through bonding wires or solder bumps.

Hybrid domain feature optimization-based power quality disturbance identification method

The invention discloses an electric energy quality disturbance identification method based on mixed domain feature optimization, and relates to the field of electric energy quality disturbance detection. Electric energy quality disturbance signals are generated through simulation, and statistical feature subsets of the disturbance signals are extracted; performing S transformation on the power quality disturbance signal to obtain a modular matrix; extracting a time domain curve and a frequency domain curve from the modular matrix, and respectively extracting values from the time domain curve and the frequency domain curve to form a feature subset; constructing a high-dimensional feature complete set by the three feature subsets, and obtaining a low-dimensional optimal feature vector by adopting PSO (Particle Swarm Optimization); and inputting actual sampling data to extract optimal features, and carrying out classification identification on the power quality disturbance by adopting a KNN ...

Method for inspecting panel for detecting and colored filter

The invention mainly relates to a method for inspecting a colored filter, in particular to a method for inspecting a panel applied to a liquid crystal display and used for detecting and the colored filter. A device for inspecting the panel for detecting comprises a liquid crystal layer, a plurality of tin indium oxide electrodes, a plurality of secondary picture elements and a backlight module with a white light source, wherein the liquid crystal layer is clamped between an upper glass substrate and a lower glass substrate; the secondary picture elements are deployed on one side of the lower glass substrate and are smaller than the secondary picture elements of the colored filter to be detected; and the backlight module is deployed on the other side of the lower glass substrate. Moreover, the device for inspecting the colored filter is provided with a first photoresistor, a second photoresistor and a panel for detecting, wherein the panel corresponds to the colored filter to be detected ...

Method and system for separating hydrofluoric acid or/and nitric acid

The invention relates to a method for separating hydrofluoric acid or/and nitric acid, which comprises the following steps: S1, conveying a solution to be separated in a first storage tank into a pretreatment system, and conveying a precipitator in a second storage tank into the pretreatment system; s2, conveying filtrate in the pretreatment system into a rectification system, conveying non-condensable gas in the rectification system into an absorption system, and conveying a rectification product in the rectification system into a post-treatment system; and S3, respectively conveying separated products in the post-treatment system into a third storage tank and a fourth storage tank, so as to obtain separated hydrofluoric acid or/and nitric acid and purified water. According to the method and system for separating hydrofluoric acid or/and nitric acid, fluosilicic acid is separated out through the precipitator, hydrofluoric acid or/and nitric acid is obtained through rectification, the purity ...

Vacuum pressure swing adsorption oxygen production equipment

The invention relates to vacuum pressure swing adsorption oxygen production equipment which comprises an air blower, an adsorption tower, a buffer storage tank and a vacuum pump, the adsorption tower comprises a circular tank body, an upper partition plate, a lower partition plate, an upper connecting plate, a lower connecting plate and a central pipe, and a first collection cavity is formed between the lower connecting plate and the bottom wall of the tank body; an air inlet pipe communicated with an air blower and a first air outlet pipe communicated with a vacuum pump are arranged at the bottom of the first collecting chamber; an adsorption area filled with adsorption particles is formed between the upper partition plate and the lower partition plate, and a second collection cavity is formed between the upper connecting plate and the top wall of the tank body; a first circulation chamber is formed between the upper connecting plate and the second screen plate; the lower connecting plate ...