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Signal cylinder and hydraulic operating mechanism with signal cylinder

A hydraulic operation and signal technology, which is applied to the protection switch operation/release mechanism, the power device inside the switch, etc., can solve the problem of poor adjustment accuracy of the opening and closing time of the circuit breaker, so as to improve control accuracy, facilitate processing, and simplify structure effect

Inactive Publication Date: 2014-11-12
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a signal cylinder to solve the problem of poor adjustment accuracy of the opening and closing time of the circuit breaker in the existing signal cylinder

Method used

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  • Signal cylinder and hydraulic operating mechanism with signal cylinder
  • Signal cylinder and hydraulic operating mechanism with signal cylinder

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Embodiment Construction

[0021] The embodiment of signal cylinder, this signal cylinder is used for hydraulic operating mechanism, and its structure is as figure 1 As shown, it includes a cylinder part and a piston 11 arranged in the cylinder part.

[0022] The cylinder block components include a cylinder block 12 , an end cover 13 and an oil plug 14 . The end cover 13 and the oil plug 14 are respectively arranged at the two ends of the cylinder body 12, where the end where the end cover 13 is located is the front end, and the other end is the rear end. An oil inlet passage is provided on the end cover 13, and the oil inlet passage includes a transverse section and a longitudinal section, the transverse section is composed of holes arranged radially on the end cover 13, and the longitudinal section is formed by holes arranged axially on the end cover 13. The hole is formed, the transverse section and the longitudinal section intersect, the inner end (rear end) of the longitudinal section runs through...

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Abstract

The invention relates to a high-voltage switch operating mechanism, in particular to a signal cylinder and a hydraulic operating mechanism with the signal cylinder. The signal cylinder is adopted in the hydraulic operating mechanism and comprises a cylinder body component and a piston arranged in the cylinder body component. An oil inlet channel is arranged at one end of the cylinder body component. A flow adjusting component is arranged on the oil inlet channel. The side, opposite to a plug, of the piston is provided with a piston rod. The outer circumferential face of the end, away from the piston, of the piston rod and the cylinder body component are in seal fit. A constant high-pressure oil cavity is formed in the side, close to the piston rod, of the piston in the cylinder body component and a work oil cavity is formed in the other side of the piston. In the process of use, moving time of the piston can be adjusted simply by adjusting the flow of the oil inlet channel through the flow adjusting component, stepless accurate adjustment can be conducted on closing and opening time of a circuit breaker, and the problem that an existing signal cylinder is poor in closing and opening time adjusting accuracy of the circuit breaker is solved.

Description

technical field [0001] The invention relates to a high-voltage switch operating mechanism, in particular to a signal cylinder and a hydraulic operating mechanism using the signal cylinder. Background technique [0002] The opening and closing time of the circuit breaker is an important index to evaluate the performance of the circuit breaker. During the working process, the circuit breaker's opening and closing time is too long, too short, or the three phases are inconsistent, which will lead to serious consequences. If the opening and closing time is too short, when the circuit breaker recloses, especially in the case of cutting off a permanent short-circuit fault, the circuit breaker cannot cut off the fault current due to the insufficient recovery of the insulation strength and arc extinguishing capacity of the arc extinguishing chamber, or a heavy fault occurs. If the opening and closing time is too long, when the circuit breaker recloses, the circuit breaker cannot rem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10H01H3/24
Inventor 孙艳玲顾根泉王永良李海文
Owner STATE GRID CORP OF CHINA
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