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Gas pressure energy storage device, hydraulic operating mechanism and high-voltage circuit breaker

A technology of accumulator and air pressure, which is applied to high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems affecting the operation and use of hydraulic circuit breakers, and cannot monitor the leakage of pre-charged gas online in real time. The effect of improving the safety of use

Active Publication Date: 2018-07-31
HENAN PINGGAO ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional pneumatic accumulators cannot monitor the leakage of precharged gas online in real time when the circuit breaker is in operation
When it is necessary to check whether the pre-charged gas in the accumulator leaks, the circuit breaker must be out of operation. By checking the pre-charged gas pressure value, it is judged whether the pre-charged gas has leaked, which greatly affects the operator's awareness of the hydraulic circuit breaker. Operation

Method used

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  • Gas pressure energy storage device, hydraulic operating mechanism and high-voltage circuit breaker
  • Gas pressure energy storage device, hydraulic operating mechanism and high-voltage circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 2

[0046] Embodiment 2 of the high-voltage circuit breaker of the present invention is different from Embodiment 1 in that the piston in this embodiment is connected with contact fingers, and the inner wall of the high-pressure gas chamber has an alarm sensor. When the gas in the high-pressure gas chamber leaks When the piston slides to the left, when it slides to the position of the alarm sensor, the normally open contact on the alarm sensor is converted into a normally closed contact, and an alarm signal is sent. There is also a lockout sensor on the left side of the alarm sensor. When the alarm signal is sent out and the maintenance is not in time or the gas leaks too fast, the piston moves to the position of the lockout sensor, and the normally open contact on the lockout sensor is converted into a normally closed contact. Send out a locking signal to cut off the control circuit of the mechanism in time to avoid accidents caused by low oil pressure operation.

specific Embodiment 3

[0047] Embodiment 3 of the high-voltage circuit breaker of the present invention is different from Embodiment 1 in that a piston sensor is installed on the piston in this embodiment, and a signal connection signal connection with the piston sensor is installed on the inner wall of the housing corresponding to the high-pressure air chamber. alarm sensor and lock sensor. When the piston slides to the left to the alarm position, the piston sensor is connected with the alarm sensor, and the alarm sensor sends an alarm signal to the alarm device, and the alarm device gives an alarm. If no one maintains the accumulator after the alarm or the gas inside the accumulator leaks quickly, when the piston continues to slide to the left to the locking position, the piston sensor is connected to the locking sensor, and the locking sensor sends a locking signal to the locking device, and the locking device Cut off the control circuit of the hydraulic mechanism in time. The alarm distance and...

specific Embodiment 6

[0050] Embodiment 6 of the high-voltage circuit breaker of the present invention is different from Embodiment 1 in that the trigger lever in this embodiment is connected to the side of the piston facing the high-pressure oil chamber, and the alarm sensor and the locking sensor are located at the side corresponding to the trigger lever. On the inner wall of the high-pressure oil chamber, the others are the same as in Embodiment 1, and will not be repeated here.

[0051] The oil in the high-pressure oil chamber of the air pressure accumulator in the above embodiments can also be other media such as air and nitrogen.

[0052] The embodiments of the hydraulic operating mechanism of the present invention are the same as the embodiments of the hydraulic operating mechanism in the above-mentioned embodiments of the high-voltage circuit breaker, and will not be repeated here.

[0053] The embodiment of the air pressure accumulator of the present invention is the same as the embodiment...

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Abstract

The invention relates to a gas pressure energy storage device, a hydraulic operating mechanism and a high-voltage circuit breaker. The high-voltage circuit breaker comprises the hydraulic operating mechanism. The hydraulic operating mechanism comprises the gas pressure energy storage device. The gas pressure energy storage device comprises a shell with an inner cavity; the inner cavity is dividedby a piston assembled with the inner wall of the inner cavity in a sliding sealing manner into a buffering storage cavity and a high-pressure gas cavity; the shell is provided with an alarming device;and the shell or the piston is provided with an alarming triggering device, and the alarming triggering device controls the alarming device to send out an alarming signal when the distance between the piston and the cavity wall of the end, away from the piston, of the high-pressure gas cavity is smaller than or equal to a first set distance. According to the gas pressure energy storage device inthe high-voltage circuit breaker, the shell or the piston is provided with the alarming triggering device and the shell is provided with the alarming device, when gas in the high-pressure gas cavity of the gas pressure energy storing device leaks and the piston slides, the alarming triggering device triggers the alarming device to give an alarm, it is promoted to perform maintaining, whether gas in the energy storing device leaks or not can be online monitored, and the using safety of the energy storing device is improved.

Description

technical field [0001] The invention relates to a pneumatic accumulator, a hydraulic operating mechanism and a high-voltage circuit breaker. Background technique [0002] The accumulator is an important component of the hydraulic operating mechanism of the high-voltage circuit breaker. It is used to store excess pressure oil and release it to provide kinetic energy for the hydraulic operating mechanism when needed. At present, accumulators include three types: gravity type, spring type, and gas-filled type. Most of the current high-voltage circuit breakers use gas-storage accumulators, and the pressure of pre-filled gas in the accumulators is usually between 20 and 35 MPa. Conventional pneumatic accumulators cannot monitor whether the precharged gas leaks online in real time when the circuit breaker is in operation. When it is necessary to check whether the pre-charged gas in the accumulator is leaking, the circuit breaker must be out of operation. By checking the pre-char...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/08F15B1/24H01H33/34
CPCF15B1/08F15B1/24H01H33/34Y02E60/16
Inventor 邰雪峰彭新奇李铁郑晓春程晓培张全民杨秋蓉宋建年崔文霞胡超然孙玉山徐燕辉
Owner HENAN PINGGAO ELECTRIC