Double turn type longitudinal magnetic field contact for vacuum arc extinguishing chamber

A technology of vacuum interrupter and longitudinal magnetic field, which is applied in the direction of high-voltage air circuit breakers, electrical components, electric switches, etc., can solve the problems of stable arc, insufficient single-turn coil magnetic field, and cannot meet the needs of use, so as to improve stability, The effect of extending the service life

Inactive Publication Date: 2008-06-25
ZHEJIANG ZIGUANG ELECTRIC APPLIANCE
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, it is found in use that when used in an arc extinguisher with a voltage level exceeding 110KV, such as a level above 126KV, since the arc is stronger than that in a vacuum interrupter with a low voltage level, the magnetic field generated by a single-turn coil is not enough to stabilize the arc. , cannot meet the needs of use

Method used

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  • Double turn type longitudinal magnetic field contact for vacuum arc extinguishing chamber

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Embodiment Construction

[0011] As shown in FIG. 1 and FIG. 2 , the present invention includes a conductive rod 1 , a current coil formed by connecting a front coil 4 and a rear coil 3 , and a contact piece 5 . The current coil is arranged between the conductive rod 1 and the contact piece 5, and the conductive rod 1, the current coil and the contact piece 5 are connected in series in sequence. It can be seen from the figure that the current coil is composed of two turns before and after, which is a double-turn coil. The center is fixedly connected, and the rear connection end 31 is fixedly connected to the conductive rod 1 .

[0012] The shape of the front turn coil 4 and the back turn coil 3 and the connection structure between them are: the front turn coil 4 and the back turn coil 3 are in the shape of a ring with an open gap, and one end of the ring extends along the radial direction and is located at the center of the circle. The terminal on the position is made into connection end, and the cent...

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Abstract

This invention relates to a vacuum arc-suppressing chamber contactor, a double turn longitudinal magnetic field contactor including a conducting bar, a current coil, a contactor plate, among which, the contactor coil is set between the conducting bar and the contactor plate, the conducting bar, the current coil and the contactor are serial orderly, the current coil is a dual turn coil, both ends of which are set at the shaft core to form two coaxial connecting ends, the front end is fixedly connected with the center of the contactor plate, the back end is fixedly connected with the conducting bar. Since the invention applies double-turn coil, it generates strong magnetic field density to increase stability of arc and prolong the lifetime of the contactor plate.

Description

Technical field [0001] The invention relates to a power switch, in particular to the improvement of the electric contact in the vacuum interrupter of a high-voltage circuit breaker. Background technique [0002] In the power system, the switch of the high-voltage circuit needs to be realized by the high-voltage circuit breaker. Since the high voltage and high current are switched on and off, the electrical contacts in the high voltage circuit breaker are required to have good arc resistance. Currently used electrical contacts include disc-shaped contacts, magnetic blown coil contacts and the like. Among them, the disc-shaped contact is made of the contact material into a disc shape, which has the characteristics of simple structure and is suitable for the control of low voltage and small current, such as the control of 11KV voltage level. In high-voltage, high-current high-voltage circuit breakers, magnetic blown coil contacts are currently used. This contact is composed o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/664
Inventor 王季梅刘志远周鹤铭
Owner ZHEJIANG ZIGUANG ELECTRIC APPLIANCE
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