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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 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 4. Отображено 4.
11-04-2023 дата публикации

Urban rail transit overhead line system dynamic quality evaluation system and determination method

Номер: CN115953048A
Автор: ZHANG JIANZHAO, LI SHUAN, WANG SHAOYONG, YANG CHAO, SONG HAIYANG, HAO HUALONG, SONG WEI, GUO MENG, LIU TIANLONG, WANG ENYING, CI MINGYANG, YANG XINYU, LIU SHUAI, ZHANG SEN, YANG MING, LIU DELONG, LIU YAJUN
Принадлежит:

The invention discloses a dynamic quality evaluation system and determination method for an urban rail transit overhead line system, and aims to give consideration to the preference of a decision maker for attributes and strive to reduce the subjective randomness of empowerment, so that the empowerment of the attributes is subjectively and objectively unified, and the decision result is more real and reliable. According to the technical indexes, a subjective and objective comprehensive weighting method is adopted, the method embodies the idea of system analysis, and the wishes of decision makers are considered while the weighting result has a mathematical theory basis, so that the evaluation result of the technical indexes more scientifically and accurately expresses the equipment state. Compared with the prior art, the method has the advantages that a plurality of related parameters are introduced, the dynamic performance of the pantograph catenary is systematically and fairly evaluated ...

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Номер записи: 1
28-07-2023 дата публикации

Assembly type contact rail damping and insulating supporting piece

Номер: CN116494842A
Автор: WANG SHAOYONG, HUANG QILAI, LI CHUANHUI, ZENG PENG, ZHANG WEI, ZHOU JING, ZHAO YINGHONG, YANG CHAO, CI MINGYANG, YU XIAOHAN, LU ZHENDUO, LIU BAILIN, SHENG RIYANG, HUANG JIE, JIA GUOXING, YU MULI
Принадлежит:

The invention discloses an assembly type contact rail damping insulation supporting piece, an insulation supporting column is connected to an insulation installation base, a damping pad is arranged between the insulation supporting column and the insulation installation base, and the insulation supporting column comprises a plurality of assembly type insulation supporting modules which are connected with one another. According to the assembly type contact rail damping insulation supporting piece, the damping pad is additionally arranged on the contact rail insulation supporting piece and used for counteracting tiny frequent vibration of a track bed on the lower portion, vibration of the upper portion of the insulation supporting piece and the suspension point of the contact rail is reduced, and the installation stability of the contact rail and the current collection quality between a collector shoe and the contact rail are improved; an assembly type assembling scheme is adopted, the overall ...

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Номер записи: 2
08-10-2014 дата публикации

Absorption device for induced voltage in direct-current electrified railway traction networks

Номер: CN104085317A
Автор: WU MINGLI, WANG LITIAN, WU YINGZHONG, YANG SHAOBING, ZHANG HONGHE, CI MINGYANG
Принадлежит:

An absorption device for induced voltage in direct-current electrified railway traction networks is characterized in that a main circuit is formed by parallelly connecting one or a plurality of LC (inductor-capacitor) resonance filter branches and a CRL (capacitor, resistor and inductor) high-pass filter branch, the main circuit is connected between an overhead contact system and a steel rail when installed in an internal direct-current traction network, and the main circuit is connected between a positive traction busbar and a negative traction busbar. A capacitor C<1> and an inductor L<1> form a series resonance branch with resonant frequency f; a capacitor C and an inductor L form a series resonance branch with resonant frequency nf (n is an odd integer); a capacitor C<2>, a resistor R<2> and an inductor L<2> form a CRL high-pass filter branch. The LC series resonance branches and the CRL high-pass filter branch in the absorption device provide a circulation passage for a power ...

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Номер записи: 3
08-10-2014 дата публикации

Steel rail resonance grounding device

Номер: CN104085318A
Автор: WU MINGLI, YANG SHAOBING, WU LIRAN, CI MINGYANG, LI TENG
Принадлежит:

A steel rail resonance grounding device is formed by an LC series connection resonance branch and is used under the occasion where an alternating current electrified railway and a direct current electrified railway share a steel rail. The steel rail resonance grounding device is connected between the steel rail and a grounding grid, and the resonance frequency of the LC series connection resonance branch is equal to the working frequency of the alternating current electrified railway. When an alternating current train runs on the rail, the LC branch arranged in the steel rail resonance grounding device generates series connection resonance which is equivalent to short circuit, steel rail grounding is achieved, and dangerous potential does not occur on the steel rail. When a direct current train runs on the rail, a capacitor in the steel rail resonance grounding device achieves a direct current isolation effect, the steel rail is isolated from the ground, and stray current is not generated ...

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Номер записи: 4