Three-position instantaneous direct-acting solid insulation circuit breaker
A solid insulation, direct-acting technology, used in high-voltage air circuit breakers, circuits, high-voltage/high-current switches, etc., can solve the problems of poor opening and closing immediacy, complex structure, etc., to eliminate the possibility of phase-to-phase faults. Effect
Active Publication Date: 2022-07-12
BEIJING SOJO ELECTRIC
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Problems solved by technology
The disadvantage is that the screw is used as the transmission mechanism, the structure becomes complicated, and the instantaneity of opening and closing is not as good as that of the knife switch
Method used
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[0023] like figure 1 shown, combined with Figure 2-6 As shown, the three-position instantaneous direct-acting solid insulated circuit breaker of the present invention includes an insulating cylinder 4, and the outer wall of the insulating cylinder 4 is connected with an incoming line bushing 11 and an outgoing line bushing 21, and the incoming line bushing 11 is embedded in the A first conductive member 12 is provided, and a second conductive member 20 is embedded in the outlet sleeve 21 . The first conductive member 12 is embedded in the incoming wire sleeve 11 by casting, and is responsible for the current carrying of the incoming wire; the second conductive member 20 is also embedded in the outgoing wire casing 21 by casting, and is responsible for the current carrying of the outgoing wire. . Both the first conductive member 12 and the second conductive member 20 are hollow cylindrical structures, which can avoid overheating caused by the skin effect.
[0024] like fig...
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The invention discloses a three-position instantaneous direct-acting solid insulation circuit breaker, which comprises an insulating cylinder, an incoming line bushing and an outgoing line bushing are connected to the outer wall of the insulating cylinder, and a first conductive member is embedded in the incoming line bushing , a second conductive member is embedded in the outlet sleeve, a first cavity and a second cavity arranged side by side are arranged in the insulating cylinder, an isolation component and a grounding component are arranged in the first cavity, and the isolation component and the grounding component are arranged along the The axial sliding of the first cavity is arranged in the first cavity, the second cavity is provided with an insulating rod and a vacuum interrupter, the static end of the vacuum interrupter is connected with the isolation component, and the dynamic end of the vacuum interrupter is connected with the first chamber. Two conductors are connected. Its purpose is to provide a three-position instantaneous direct-acting solid insulation circuit breaker, which combines the advantages of knife switch and traditional direct-acting switch, and adopts unit design switch, which fundamentally eliminates the occurrence of phase-to-phase faults. possibility.
Description
technical field [0001] The invention relates to a high-voltage electrical switchgear, in particular to a solid-insulation fully-sealed switch insulation device for effectively disconnecting the switch in a power transmission and distribution cabinet. Background technique [0002] In response to the country's further construction of an environment-friendly society, related power equipment is developing in the direction of environmental protection, miniaturization, combination, intelligence and high reliability. The traditional SF6 ring main unit is gradually replaced by solid insulated switchgear due to its large size and easy air leakage. Due to the improved quality and reliability of power transmission and transformation in the power system, the performance requirements of high-voltage switchgear are getting higher and higher, and the development of such switches is imminent for the power industry. [0003] The solid-insulated fully-sealed switchgear widely used in the exi...
Claims
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IPC IPC(8): H01H33/666H01H33/66H01H33/662H01H33/664
CPCH01H33/666H01H33/6606H01H33/66207H01H33/664
Inventor 齐佳伟张国志赵毅孙龙王伟平唐晓鹏张东旭
Owner BEIJING SOJO ELECTRIC