A three-position mechanism with reclosing and grounding closing functions and an operation method thereof

Abstract

The invention relates to a three-position mechanism with reclosing and grounding closing functions and an operation method thereof. The mechanism comprises a breaker operation mechanism and a grounding operation mechanism which are installed on an installing plate. The main design points of the three-position mechanism with reclosing and grounding closing functions and an operation method thereof are that: the installing plate is provided with a rotary curve disc; the curve disc is provided with a curvy groove and an open-ended straight line groove. The open-ended straight line groove is provided with an opening long a radial direction of the curve disc; a roller of an output crank arm in the breaker operation mechanism is in cooperative linkage with the curvy groove; a grounding output part of the grounding operation mechanism is fixedly connected with a pin; when the grounding output part is rotating, the pin performs arc movements following the pin; the installing plate is provided with an arc groove which is matched with a movement track of the pin; the pin goes through the arc groove and is in cooperative linkage with the straight line groove of the arc disc. The three-position mechanism with reclosing and grounding closing functions provided by the invention is relatively simple in principles of structure. The conversion of the three-position is relatively reliable, convenient and precise. The requirements for rapid closing and opening are satisfied. The dismounting, assembling and maintenance are relatively convenient, and the structure principles disclosed by the invention the can be applied to three-position mechanisms with reclosing and grounding closing functions and the improvement of products of the same kind.

Description

technical field [0001] The invention relates to an isolating switch of a high-voltage switching device, which is a three-station mechanism with the functions of reclosing and grounding closing and an operating method thereof. Background technique [0002] The isolating switch is the most widely used electrical appliance in high-voltage switching appliances. It plays an isolation role in the circuit and is an important switching device for the power system to realize switching and switching circuits. Its working principle and structure are relatively simple, but due to the large amount of use and high reliability requirements, it has a greater impact on the design, establishment and safe operation of substations and power plants. At present, the common problem is that the fast mechanism cannot meet the requirements of speed separation, and can only be used in load switch cabinets, but not in fuse combination cabinets. There are fast mechanisms without speed separation functio...

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Problems solved by technology

[0003] In order to overcome the above disadvantages, the object of the present invention is to provide the field with a three-position mechanism with the functions of reclosing and grounding closing and its operating method, so that it can solve the problem of poor speed division effect of existing similar operating mechanisms, Overall loading and unloading, inconvenient maintenance, closing, opening, grounding three-station operation stability and poor technical problems

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