Safety interlocking device for high-voltage switchgear equipment
A safety interlock device, high-voltage switch technology, applied in the direction of air switch components, etc., can solve the problems of high installation accuracy, poor reliability, five-proof interlock failure, etc., to achieve reliable transmission mode, convenient installation, and meet electrical requirements. The effect of security protection
Inactive Publication Date: 2011-04-20
ANHUI XINLONG ELECTRICAL
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Problems solved by technology
[0002] At present, in the power system, high-voltage switchgear adopts fixed metal-enclosed switchgear equipped with imported Schneider Electric vacuum circuit breakers, but the structure of the safety interlock device of each operating mechanism of the fixed metal-enclosed switchgear is relatively complicated, and its mechanical interlock mechanism They are all driven by steel wire ropes, which require high installation accuracy, and it is difficult to adjust the interlocking position. In addition, during transportation, installation, and use of the cabinet, if there is a small deformation, the interlocking size will change and become invalid, and it is easy to operate. Accidents make the entire five-proof interlock invalid, so its reliability is poor
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[0012] Such as figure 1 As shown, a high-voltage switchgear safety interlock device includes a cabinet body 13, a circuit breaker opening and closing operation shaft 12, and a transmission device connected to the cabinet body 13. One end of the transmission device is connected to the handle 1 of the isolation knife operating mechanism, and the other One end is connected with the circular connecting rod 7 through the lever connecting rod 6, and the circular connecting rod 7 is connected with the opening and closing operation shaft 12 of the circuit breaker.
[0013] The lever connecting rod 6 is connected with the bracket 10 through the round pin 8, and the bracket 10 is arranged on the tray 11.
[0014] Described lever connecting rod 6 is connected with round connecting rod 7 by interlocking pin 9.
[0015] The transmission device includes a curved plate 2, a fixed bracket 3, a guide rod 4, and a connected curved plate 5. One end of the curved plate 2 is connected to the hand...
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The invention provides a safety interlocking device for high-voltage switchgear equipment, which comprises a cabinet body, a breaker on and off operating shaft and a transmission device connected with the cabinet body, wherein one end of the transmission device is connected with a handle of an isolation knife operating mechanism, and the other end of the transmission device is connected with a round connecting rod through a lever connecting rod; and the round connecting rod is connected with the breaker on and off operating shaft. When the structure is adopted, the installation is convenient, the interlocking among all operating mechanisms and a more reliable transmission mode are realized at the same time, and the electrical safety protection requirement of a switch cabinet is met completely.
Description
Technical field: [0001] The invention relates to a safety interlocking device for a high-voltage switchgear. Background technique: [0002] At present, in the power system, high-voltage switchgear adopts fixed metal-enclosed switchgear equipped with imported Schneider Electric vacuum circuit breakers, but the structure of the safety interlock device of each operating mechanism of the fixed metal-enclosed switchgear is relatively complicated, and its mechanical interlock mechanism They are all driven by steel wire ropes, which require high installation accuracy, and it is difficult to adjust the interlocking position. In addition, during transportation, installation, and use of the cabinet, if there is a small deformation, the interlocking size will change and become invalid, and it is easy to operate. An accident makes the entire five-proof interlock fail, so its reliability is poor. Contents of the invention [0003] The technical problem to be solved by the present inve...
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Inventor 束龙胜李开明宛玉超汪桂林孟祥军付强杨成长王标周波张攀科刘建桂召凡
Owner ANHUI XINLONG ELECTRICAL