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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 12. Отображено 12.
27-06-2023 дата публикации

Method for measuring thermal expansion coefficient of epoxy resin material

Номер: CN116337927A
Автор: ZHANG LEI, PAN SHAOMING, SU YI, RAO XIAJIN, LI DAJIAN, CHEN LIANGYUAN, LI RUI, ZHAO JIAN, LU YUFENG, YU CHANGTING
Принадлежит:

The invention relates to the technical field of polymer and high-voltage insulating materials, and particularly discloses a method for measuring the thermal expansion coefficient of an epoxy resin material, which comprises the following steps: preparing an epoxy resin material sample; performing dielectric testing on the sample, and testing dielectric constants at different temperatures; fitting dielectric constants at different temperatures measured according to the double H-N function and conductivity loss to obtain an optical frequency dielectric constant epsilon infinity at each temperature; and the thermal expansion coefficient is solved by combining the optical frequency dielectric constants at all temperatures with the relationship between the optical frequency dielectric constants and the temperatures. According to the method for measuring the thermal expansion coefficient of the epoxy resin material, the bulk thermal expansion coefficient of the material is calculated based on ...

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Номер записи: 1
27-03-2018 дата публикации

Transformer tank displacement detection device

Номер: CN0207147444U
Автор: CHEN LIANGYUAN, LI DAJIAN, ZHAO JIAN, ZHANG YUBO, ZHANG LEI, SU XINGHUA, PU JINYU, YAN HAIJUN, YU CHANGTING
Принадлежит: GUANGXI POWER GRID CORP ELECTRIC POWER RES INST, GUANGXI POWER GRID CORPORATION ELECTRIC POWER RESEARCH INSTITUTE

The utility model discloses a transformer tank displacement detection device through measurement to the transformer tank vibration displacement and real -time supervision, can verify whether the electromagnetic design of transformer meets the requirements, the utility model discloses a displacement sensor, the 2nd displacement sensor, signal adapter and computer, a displacement sensor and the 2nddisplacement sensor are laser displacement sensor, measure two ascending displacements in side of transformer tank respectively. The utility model discloses can realize contactless, the liftoff measurement of long distance to have characteristics fast, that the precision is high, the range is big, anti light electrical interference can the reinforce, realized the precision measurement and the real-time supervision of transformer tank displacement in service, to the manufacturing process who improves the transformer, reduce the vibration and the noise of transformer, verify that the running behaviour ...

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Номер записи: 2
27-03-2018 дата публикации

High altitude wiring automatic clamping device

Номер: CN0207150026U
Автор: CHEN LIANGYUAN, LI DAJIAN, ZHAO JIAN, ZHANG YUBO, ZHANG LEI, SU XINGHUA, PU JINYU, YAN HAIJUN, YU CHANGTING
Принадлежит: GUANGXI POWER GRID CORP ELECTRIC POWER RES INST, GUANGXI POWER GRID CORPORATION ELECTRIC POWER RESEARCH INSTITUTE

The utility model discloses a high altitude wiring automatic clamping device for electric power test field, including mounting, moving part, power device, power, insulator spindle and wire, the rear portion of mounting is fixed on the insulator spindle top, and power device fixes at the mounting middle part, and the moving part is connected with power device's driver part, the anterior constitution clamp mouth of moving part and mounting, and the power is installed on the insulator spindle to be connected with power device through the wire, during the use, the mounting is connected with testing instrument's test wire. The utility model provides a risk issue that brings of manual operation, realized high altitude construction groundization and self -holding, have that easy operation, safe and reliable, the power of pressing from both sides are big, an auto -lock, the good characteristics of contact.

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Номер записи: 3
14-05-2014 дата публикации

Superconductive adjustable reactor winding control apparatus and method

Номер: CN103795315A
Автор: CHEN BAICHAO, SUN BIN, YUAN JIAXIN, ZHOU PAN, YU CHANGTING, ZHOU XINGLONG
Принадлежит:

The invention discloses a superconductive adjustable reactor winding control apparatus and method. An alternating-current contactor is used as a mechanical switch and a thyristor in an anti-parallel mode is used as a power electronic switch; and a PLC is used for controlling the alternating-current contactor and the power electronic switch respectively. When a superconductive coil closing command is received, the PLC sends out the command to control the alternating-current contactor to make motion and the anti-parallel thyristor is controlled to carry out conduction. When the contact of the alternating-current contactor is closed, the thyristor conduction is stopped, so that the alternating-current contactor provides an access for the current flowing through superconductive coil. According to the invention, the mechanical switch and the alternating-current power electronic switch are combined; the response is fast and the loss is low; the direct-current component caused by the superconductive ...

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Номер записи: 4
25-10-2019 дата публикации

DC resistance test wire clamp

Номер: CN0209542661U
Автор: CHEN LIANGYUAN, YU CHANGTING, ZHAO JIAN, YAN YUNYUN
Принадлежит: ELECTRIC POWER RES INST GUANGXI POWER GRID CO LTD, ELECTRIC POWER RESEARCH INSTITUTE, GUANGXI POWER GRID CO., LTD.

The utility model discloses a direct-current resistance test wire clamp. Wherein the front end of the positioning device is provided with a bifurcation structure, a clamping device is fixedly arrangedon one bifurcation at the front end of the positioning device, a contact finger is arranged on the other bifurcation at the front end of the positioning device, one end of the contact finger is fixedly connected with the bifurcation at the front end of the positioning device, and the other end of the contact finger can be clamped on the clamping device. According to the utility model, the contactfinger and the clamping device are arranged; the positioning device and the contact finger can be in direct contact with the sleeve conducting rod; and contact stress is provided by elastic deformation force generated by deformation of the contact finger, so that the contact resistance of the positioning device and the sleeve conducting rod is greatly reduced, the device has the characteristics of convenience ...

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Номер записи: 5
21-07-2023 дата публикации

Preparation method of nano hybrid epoxy resin with high breakdown strength

Номер: CN116462938A
Автор: ZHANG LEI, PAN SHAOMING, SU YI, RAO XIAJIN, LI DAJIAN, CHEN LIANGYUAN, LI RUI, ZHAO JIAN, LU YUFENG, YU CHANGTING
Принадлежит:

The invention belongs to the technical field of high polymer materials and high-voltage insulation, and particularly relates to a preparation method of nano hybrid epoxy resin with high breakdown strength, which comprises the following steps: S1, mixing a curing agent with AP-POSS nano filler to obtain a mixture A; s2, after the mixture A prepared in the step S1 is subjected to mechanical stirring, centrifugal stirring and ultrasonic oscillation, epoxy resin and an accelerant are added, and a mixture B is obtained; and S3, centrifugally stirring and mechanically stirring the mixture B prepared in the step S2, degassing, carrying out ultrasonic oscillation, pouring into a preheated mold, curing, and finally cleaning and drying to obtain the nano hybrid epoxy resin. The prepared nano hybrid epoxy resin is good in insulating property and high in anti-breakdown strength, and has very important significance in electronic insulation application.

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Номер записи: 6
21-07-2023 дата публикации

Method for improving breakdown strength of epoxy resin material

Номер: CN116462874A
Автор: PAN SHAOMING, SU YI, RAO XIAJIN, ZHANG LEI, LI DAJIAN, CHEN LIANGYUAN, LI RUI, ZHAO JIAN, LU YUFENG, YU CHANGTING
Принадлежит:

The invention relates to the technical field of macromolecular and high-voltage insulating materials, and particularly discloses a method for improving the breakdown strength of an epoxy resin material, which comprises the following steps: putting an epoxy resin material sample into heat treatment equipment in a hanging manner, heating to 180-230 DEG C, preserving heat for 24-96 hours, taking out and cooling. According to the method for improving the breakdown strength of the epoxy resin material, the cured epoxy resin is subjected to short-term high-temperature heat treatment, so that the epoxy resin is promoted to form a layer of compact oxide film on the surface, in-vivo charge transport is hindered, the breakdown performance of the epoxy insulating material is improved, and compared with an untreated epoxy resin material, the breakdown strength of the epoxy resin material is improved. The breakdown strength is improved by more than 9%. According to the invention, the breakdown strength ...

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Номер записи: 7
04-04-2023 дата публикации

Particle trapper and gas-insulated metal-enclosed switchgear housing assembly

Номер: CN115888983A
Автор: PAN SHAOMING, SU YI, LI DAJIAN, CHEN LIANGYUAN, ZHAO JIAN, LU YUFENG, RAO XIAJIN, ZHANG LEI, YU CHANGTING, LI RUI
Принадлежит:

The invention discloses a particle trapper and a gas-insulated metal-enclosed switchgear shell assembly. The particle catcher comprises a sleeve type base body, the base body comprises an inner layer shell and an outer layer shell, the outer layer shell is located below the bottom of the inner layer shell, the outer layer shell and the inner layer shell form a catching cavity, and an opening groove is formed in the position, corresponding to the catching cavity, of the inner layer shell to form a grid structure. A blocking piece is arranged in the groove wall of the open groove to form a bent falling channel. According to the particle catcher, the blocking piece is arranged in the groove wall of the open groove to form the bent falling channel, under the special conditions such as voltage polarity sudden change under the impact condition, the blocking piece plays a blocking role, and metal particles can be prevented from escaping from the open groove and entering the catching cavity to ...

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Номер записи: 8
04-07-2023 дата публикации

Method for efficiently coating epoxy group with micron aluminum oxide in short time

Номер: CN116376328A
Автор: PAN SHAOMING, SU YI, LI DAJIAN, CHEN LIANGYUAN, ZHAO JIAN, LU YUFENG, RAO XIAJIN, ZHANG LEI, YU CHANGTING, LI RUI
Принадлежит:

Aiming at the low efficiency phenomenon in the prior art, the method comprises the following steps: firstly, drying micron Al2O3 particles to avoid the adverse effect of moisture on the efficient grafting of micron filler, and then promoting the contact and reaction of a coupling agent and the filler by combining high-temperature mechanical stirring and ultrasonic oscillation, so that the high-efficiency coating of the epoxy group with the micron Al2O3 particles is realized, and the high-efficiency coating of the epoxy group with the micron Al2O3 particles is realized. Therefore, the purpose of efficiently grafting the micron filler within a short time is achieved. The method has the advantages of being high in efficiency and short in consumed time, the time cost in filler modification can be reduced, therefore, the working efficiency and the yield of the basin-type insulator are improved, and the method has very high popularization value.

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Номер записи: 9
27-03-2018 дата публикации

Transformer tank vibration test system

Номер: CN0207147625U
Автор: CHEN LIANGYUAN, LI DAJIAN, ZHAO JIAN, ZHANG YUBO, ZHANG LEI, SU XINGHUA, PU JINYU, YAN HAIJUN, YU CHANGTING
Принадлежит: GUANGXI POWER GRID CORP ELECTRIC POWER RES INST, GUANGXI POWER GRID CORPORATION ELECTRIC POWER RESEARCH INSTITUTE

The utility model discloses a transformer tank vibration test system relates to power equipment test technical field, including a vibration sensor, the 2nd vibration sensor, signal receiver, computerand external power supply, a vibration sensor and the 2nd vibration sensor are unipolar wireless sensor, measure two ascending vibration signals in side of transformer tank respectively and send radiosignal, save in inputing the computer after radio signal receives through signal receiver, vibration sensor has external connection power interface, the power supply of accessible external power supply, external power supply comprises power generator using vibration and chargeable call. The utility model discloses can realize the wireless transmission and long -time work of vibration sensor signal to have safe, convenient, operating time long, measure real -time accurate characteristics.

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Номер записи: 10
04-04-2023 дата публикации

Power transformer temperature fault monitoring method and system

Номер: CN115900997A
Автор: CHEN LIANGYUAN, LI DAJIAN, ZHOU KE, ZHAO JIAN, ZHANG LEI, WANG XIAOMING, YU CHANGTING, LI RUI, RAO XIAJIN, PAN SHAOMING
Принадлежит:

The invention discloses a power transformer temperature fault monitoring method and system. The method comprises the following steps: measuring the temperature of an oil inlet pipeline and an oil outlet pipeline in a transformer cooling system by adopting a conical optical fiber; a speed sensor is adopted to measure the oil flow velocity on the oil inlet pipeline and the oil outlet pipeline, and a flow velocity parameter used for assisting the temperature as a decision basis is obtained; a GBDT diagnosis module is adopted, data measured by the conical optical fiber and the speed sensor serve as the input of the GBDT diagnosis module, and the winding hot-spot temperature of the transformer serves as the output of the GBDT diagnosis module. According to the invention, the temperature of the oil inlet pipeline and the oil outlet pipeline is measured through the conical optical fiber, the velocity of the oil flow velocity in the oil inlet pipeline and the oil outlet pipeline is measured through ...

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Номер записи: 11
29-10-2014 дата публикации

Self-coupling step-down compensation integrated soft start device

Номер: CN104124905A
Автор: YUAN JIAXIN, LEI YANG, ZHOU JUNWEI, YU CHANGTING, CHEN BAICHAO
Принадлежит:

The invention discloses a self-coupling step-down compensation integrated soft start device which couples the two functions of a self-coupling transformer and a magnetic-valve type controllable reactor together through an ingenious circuit and magnetic circuit design, and relates to the start-up of an extra-high/ultra-high capacity high-voltage motor. A high-voltage side magnetic core and a low-voltage side magnetic core are completely the same in structure, the high-voltage side magnetic core is composed of a first iron core, a second iron core and a first side yoke, a first coil and a second coil are wound on the first iron core, a third coil and a third coil are wound on the second iron core, and the other end of each of the first coil and the third coil is connected with the other end of each of the second coil and the fourth coil in parallel; one end of a high-voltage side winding is connected with the positive pole of an input power supply, the other end of the high-voltage side winding ...

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Номер записи: 12