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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 7. Отображено 7.
07-07-2023 дата публикации

Water-sand separation grading method and device based on hydrocyclone

Номер: CN116393240A
Автор: WANG YUANJIAN, LIU GANG, LI XINJIE, YANG FEI, WANG QIANG, SUN LONGFEI, LI JIEYU, LIU YANHUI, QU SHAOJUN, MA HUAIBAO, LI KUNPENG, WANG TING, ZHAO WANJIE, YANG ZHOU, LIU BOLUN, LI HANG, ZHANG LING, TANG FENGZHEN, YAN XIAOFEI, GUO XIUJI, LI LIKE, ZHANG GE, SHI HUAWEI, CHEN CHEN, WANG XIN
Принадлежит:

The invention relates to the technical field of water-sand separation and grading, and discloses a water-sand separation and grading method and device based on a hydrocyclone, the water-sand separation and grading method based on the hydrocyclone comprises the following steps: S1, determining the target product granularity of a first-stage cyclone body, and determining the target product granularity of a second-stage cyclone body; the water-sand separation grading device based on the hydrocyclone comprises a base, collecting hoppers are arranged on the two sides of the surface of the base, the service life of a desilting opening can be effectively prolonged, the size of the desilting opening can be adjusted according to use requirements, in addition, materials can be effectively prevented from being blocked at the desilting opening, and the water-sand separation grading device based on the hydrocyclone is convenient to use. And heavy-component materials can be effectively prevented from ...

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Номер записи: 1
14-07-2023 дата публикации

Bistable composite material structure vibration frequency optimization method based on artificial intelligence

Номер: CN116434888A
Автор: WU CHENCHEN, ZHANG RUMING, TANG FENGZHEN, ZHANG WEI
Принадлежит:

The invention belongs to the field of composite material structure and artificial intelligence interaction, and particularly relates to an artificial intelligence-based bistable composite material structure vibration frequency optimization method, which comprises the following steps of: laying angle data for randomly generated cylindrical shell structure fibers, and classifying the data; training the data to obtain a classifier which is judged to accord with a constraint condition; establishing a finite element model, inputting data meeting constraint conditions into the finite element model, obtaining vibration frequencies corresponding to different fiber laying angles, different arc lengths and different wrap angles, and inputting the vibration frequencies into a BP neural network to obtain a calculation model of the vibration frequencies; and taking the classifier and the calculation model as objective functions of an improved particle swarm optimization algorithm, taking the fiber laying ...

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Номер записи: 2
09-05-2023 дата публикации

Multi-flow-path river channel flat beach flow determination method based on river channel section terrain

Номер: CN116090208A
Автор: JIANG ENHUI, WANG QIANG, WANG YUANJIAN, SUN ZANYING, FU XUDONG, SUN KAI, LI XINJIE, YANG FEI, LI LIKE, LI JIEYU, LIU YANHUI, QU SHAOJUN, MA HUAIBAO, LI KUNPENG, JIANG SIQI, WANG TING, ZHANG LING, TANG FENGZHEN, SUN LONGFEI, GUO XIUJI, YAN XIAOFEI, WANG XIN, ZHANG SHIAN, SHI HUAWEI, CHEN CHEN, REN ZHIHUI, YAN ZHENFENG, WANG ZILU, ZHAO WANJIE, LIU BOLUN
Принадлежит:

The invention discloses a method for determining the flat beach flow of a multi-flow-path riverway based on the cross-section terrain of the riverway. The method comprises the following steps: firstly, establishing a flat beach characteristic value characterization system of the multi-flow-path riverway and a quantification method thereof; establishing a section terrain interpolation and standardized grid division method based on a terrain stationarity transition principle; constructing a flat beach feature value extraction model based on a water level gradual increase method, and establishing a potential flat beach feature value data set; based on an aspect ratio extreme value method and an inter-year flat beach characteristic value continuity assumption principle, establishing a grading flat beach characteristic value determination method; and based on the water level-flow relation, the multi-flow-path river channel flat beach flow determination method based on the river channel section ...

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Номер записи: 3
12-05-2010 дата публикации

Device for testing airtightness of weld joint on ship surface and using method thereof

Номер: CN0101706350A
Автор: HUANG RISHUN, LING ZHIXUE, LU YAOFU, TANG FENGZHEN, ZHANG WEIGUANG, RISHUN HUANG, ZHIXUE LING, YAOFU LU, FENGZHEN TANG, WEIGUANG ZHANG
Принадлежит:

The invention discloses a device for testing the airtightness of a weld joint on a ship surface and a using method thereof. The device comprises an outer frame of which the lower end face is matched with the ship surface, wherein the top end of the outer frame is sealed and provided with an organic glass plate; the edge of the lower end face of the outer frame is connected with a rubber strip; and the organic glass plate is provided with a vacuumizing pipe orifice. The device can be used for the in-situ inspection of the quality of the weld joint to effectively reduce workload of re-derusting production of a component segment left uncoated as required by a segmental airtight weld joint after segment joint and workload of painting construction, reduce paint waste and create a necessary condition for meeting the requirements of a standard specified in IMO Standards for Coating Performance that the damage area of a ballast tank should not exceed 2 percent after segment joint, so the device ...

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Номер записи: 4
23-06-2023 дата публикации

Branch entrance gate dam and control method for reservoir area siltation based on gate dam

Номер: CN116289788A
Автор: YANG FEI, JIANG ENHUI, WANG YUANJIAN, TANG FENGZHEN, MA HUAIBAO, LI KUNPENG, QU SHAOJUN, WANG PING, TIAN SHIMIN, WANG QIANG, LI LINGQI, LI XINJIE, SUN LONGFEI, GUO XIUJI, YAN XIAOFEI, LI JIEYU, LIU YANHUI, LIU GANG, ZHAO WANJIE, YANG ZHOU, LIU BOLUN, LU YIFAN, LIU SONGLIN, LI HANG, DONG QINGHAO
Принадлежит:

The invention discloses a tributary entrance gate dam and a control method for reservoir area siltation based on the gate dam. The method comprises the steps that gate dams are built at tributary entrances with the large reservoir capacity within the upstream reservoir area range of a main stream dam; the gate dam body is a branch dam, a surface hole and a bottom hole are formed in the upper portion and the lower portion of the branch dam respectively, and gates are arranged on the surface hole and the bottom hole respectively and used for controlling opening and closing of the bottom hole and the surface hole. In the non-flood season, all gates of the tributary entrance gate dam are controlled to be closed, in the non-flood season, in the transition period of the flood season, the main stream reservoir drains water firstly, and then the tributary reservoir drains water; in the flood season, when the main stream reservoir needs to store and retain flood, the main stream reservoir firstly ...

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Номер записи: 5
30-06-2023 дата публикации

River water and sediment calculation method based on Muskingum method

Номер: CN116361599A
Автор: YANG FEI, JIANG ENHUI, WANG YUANJIAN, WANG QIANG, LI KUNPENG, QU SHAOJUN, MA HUAIBAO, WANG PING, TIAN SHIMIN, LI LINGQI, LI XINJIE, TANG FENGZHEN, LI JIEYU, LIU YANHUI, SUN LONGFEI, GUO XIUJI, YAN XIAOFEI, LIU BOLUN, LU YIFAN, LIU SONGLIN, ZHAO WANJIE, LIU GANG, YANG ZHOU, LI HANG, DONG QINGHAO
Принадлежит:

The invention discloses a river water and sediment calculation method based on a Muskingum method, and belongs to general methods in the field of water conservancy. Comprising the following steps: (1) selecting a target river reach; (2) hydrological data collection; (3) reorganizing a flow and sediment transport rate data sequence; (4) determining a numerical value of a flow calculation coefficient; (5) calculating the flow process by adopting a Muskingum method flow calculation formula; and (7) calculating the sediment transport process by adopting a Muskingum method sediment transport rate calculation formula. On the basis of a traditional Muskinggen method flow calculation formula, a Muskinggen method sediment transport rate calculation formula is expanded, and the Muskinggen method sediment transport rate calculation formula of the river reach is obtained through simultaneous solution of a river reach sediment amount balance equation and a sediment amount tank storage equation. According ...

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Номер записи: 6
04-04-2023 дата публикации

Method for preparing precoated sand by taking Yellow River sediment as main siliceous raw material

Номер: CN115889682A
Автор: LI KUNPENG, JIANG ENHUI, CHEN CHEN, SHI HUAWEI, JIANG SIQI, ZHANG GE, LI SIHENG, LI LIKE, WANG YUANJIAN, QU SHAOJUN, MA HUAIBAO, WANG TING, GUO XIUJI, YAN XIAOFEI, LI XINJIE, WANG QIANG, LI JIEYU, ZHANG LING, TANG FENGZHEN, SUN LONGFEI, WANG XIN, REN ZHIHUI, YAN ZHENFENG, WANG ZILU
Принадлежит:

The invention provides a method for preparing precoated sand by taking Yellow River silt as a main siliceous raw material. The precoated sand comprises the following raw materials in parts by weight: 100 parts of silica sand, 1-4 parts of phenolic resin, 0.02-0.05 part of a silane coupling agent, 1-3 parts of urotropin, 0.05-0.3 part of calcium stearate, 0.05-0.1 part of graphite powder and 3-5 parts of iron sand. According to the method, the characteristic that the Yellow River silt serves as a silicate substance is utilized, the Yellow River silt is subjected to the processes of washing, scrubbing, drying and the like to obtain the silica sand, impurities and feldspar substances attached to the surface of the silt are removed, the silt content of the silt can be reduced to 0.3% or below, and the content of SiO2 in the Yellow River silt is increased to 80% or above. Wherein the silica sand obtained by taking the Yellow River silt as the raw material is low in price, the production cost ...

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Номер записи: 7