Hydraulic pressure disc spring energy storing device for high-voltage breaker

Abstract

In order to overcome the structural defects of the hydraulic disc spring multi-accumulator of the traditional high-voltage circuit breaker operating mechanism, the present invention discloses a single-cylinder hydraulic disc spring energy storage device, which includes a piston in a hydraulic cylinder, a force transmission flange and a disc The disc spring is arranged in a separate disc spring mechanism, which is fixedly connected to the hydraulic cylinder body through a transition flange, and connected to one end of the piston through a central ball bearing on the piston side of the force transmission flange. In the radial direction on the other side of the force transmission flange, three dowel rods are uniformly distributed along its circumferential surface. One end of the dowel rod is connected to the force transmission flange through a circumferential ball bearing, and the other end is connected to the disc spring mechanism. The hydraulic disk spring energy storage device of the present invention has convenient installation of the disk spring, can automatically compensate processing errors within a certain range during use, has few leakage points, and will not strain the cylinder body during pressurized operation.

Description

technical field [0001] The invention relates to an energy storage device in an operating mechanism for a high-voltage circuit breaker, in particular to a hydraulic disc spring energy storage device. technical background [0002] In the operating mechanism of high-voltage circuit breakers, the commonly used energy storage devices of traditional hydraulic disc springs are generally composed of a group of disc springs connected to multiple accumulator cylinders, which have the following problems in use: 1) due to processing errors, etc. Difficulties in assembly and installation caused by avoidable reasons; 2) Since the processing error cannot be automatically compensated, the accumulator, etc. are easy to strain the cylinder body during pressurized operation; 3) The accumulator has many sealing points and is easy to leak; 4) The disc spring is more complicated to install and needs to be installed together with the working cylinder. Contents of the invention [0003] The inve...

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Problems solved by technology

[0002] In the operating mechanism of high-voltage circuit breakers, the commonly used energy storage devices of traditional hydraulic disc springs are generally composed of a group of disc springs connected to multiple accumulator cylinders, which have the following problems in use: 1) due to processing errors, etc. Difficulties in assembly and installation caused by avoidable reasons; 2) Since the processing error cannot be automatically compensated, the accumulator, etc. are easy to strain the cylinder body during pressurized operation; 3) The accumulator has many sealing points and is easy to leak; 4) The installation of the disc spring is more complicated and needs to be installed together with the working cylinder

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