Portable hydraulic operating mechanism and high-voltage switchgear applying same
A hydraulically operated and portable technology, which is applied in the field of portable hydraulic operating mechanism and high-voltage switchgear, can solve the problems such as high probability of oil leakage, achieve the effect of reducing volume, avoiding hydraulic oil leakage, and facilitating the development of miniaturization
Inactive Publication Date: 2016-11-16
PINGGAO GRP +1
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Problems solved by technology
[0006] The purpose of the present invention is to provide a hydraulic operating mechanism with a compact structure to solve the problem in the prior art that oil tanks, hydraulic cylinders and check valves are connected through pipelines to cause a high probability of oil leakage; the purpose of the present invention is also to provide High-voltage switchgear of the above-mentioned hydraulic operating mechanism
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Embodiment Construction
[0028] Examples of high voltage switchgear:
[0029] High-voltage switchgear includes moving and static contacts that cooperate with each other, an insulating pull rod for driving the moving contact to realize opening and closing, and a portable hydraulic operating mechanism for driving the movement of the insulating pulling rod. The specific structure of the portable hydraulic operating mechanism is as follows: Figure 1 to Figure 3As shown, it includes a hydraulic cylinder 1, an electric motor 2, a coupling 3, a double-acting variable pump 4, a valve block 5, an oil tank 6 and a controller 7. The hydraulic cylinder 1 is arranged along the left and right direction, and the motor 2 , the double-acting variable pump 4 , and the valve block 5 are arranged in series from left to right and are arranged on the front side of the hydraulic cylinder 1 close to the hydraulic cylinder. The main shaft of the double-acting variable pump 4 is rigidly connected to the output shaft on the ri...
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The invention relates to the field of a high-voltage switch, in particular to a portable hydraulic operating mechanism and a high-voltage switchgear applying the same. By the portable hydraulic operating mechanism and the high-voltage switchgear applying the same, the problem of high possibility of oil leakage since an oil tank, a hydraulic cylinder and a one-way valve in the prior art are connected through a pipeline is solved. In the hydraulic operating mechanism, a valve block is fixedly arranged on a cylinder body of the hydraulic cylinder, a valve block rodless cavity oil passage arranged on the valve block is abutted and communicated with a rodless cavity communication hole of the hydraulic cylinder, and a rod cavity oil passage of the valve block is abutted and communicated with a rod cavity communication hole of the hydraulic cylinder. Connection pipelines arranged between an oil return one-way valve and a rodless cavity of the hydraulic cylinder and between an oil supplement one-way valve and a rod cavity of the hydraulic cylinder are substituted by the abutted oil passages, the miniaturization of the hydraulic operating mechanism is promoted, and hydraulic oil leakage caused by the connection pipelines is also prevented.
Description
technical field [0001] The invention relates to the field of high-voltage switches, in particular to a portable hydraulic operating mechanism and high-voltage switchgear using the operating mechanism. Background technique [0002] With the continuous development of the electric power industry, the application of high-voltage circuit breakers is becoming more and more extensive. As the power source for closing and breaking high-voltage circuit breakers, the operating mechanism mainly includes spring operating mechanisms, hydraulic operating mechanisms, electromagnetic operating mechanisms and pneumatic operating mechanisms. The hydraulic operating mechanism is commonly used because of its high output power, fast response, and high reliability. However, it has the disadvantages of many parts and complicated manufacturing and assembly. At present, the hydraulic operating mechanism for circuit breakers mainly includes power motors, hydraulic pumps, control valves, accumulators,...
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IPC IPC(8): H01H3/24
CPCH01H3/24
Inventor 雷琴李宁王永良刘煜闫广超
Owner PINGGAO GRP