Interlocking device of high-tension switch gear

Abstract

The invention provides an interlocking device of a high-tension switch gear. The interlocking device comprises a lorry frame, an electromagnetic mechanism and a mechanical locking device, wherein the electromagnetic mechanism and the mechanical locking device are arranged on the lorry frame; the electromagnetic mechanism dead point round pin of the electromagnetic mechanism is connected with a cable accelerator through a lever mechanism; and the cable accelerator is connected with the mechanical locking device through a rotating mechanism. Compared with the prior art, the interlocking device provided by the invention has the advantages that the structure is simple, and the manufacturing is convenient; by rotating a handle to a segmentationally locked position, a crank arm on a handle shaft simultaneously rotates clockwise; the cable accelerator drives a lower adaptor to move down, a spring is compressed, a pressing sheet moves downwards, the larger end of a lever moves downwards, the smaller end of the lever moves up and pushes a mechanism dead point shaft to pass through a dead point, thus brake separating operation is completed under the action of a brake separating spring of a circuit breaker, thereby forcibly disconnecting the circuit breaker and realizing a function of preventing on-load disconnecting link; since the lever props the mechanism dead point all the time, the mechanism can not store energy and further can not switch in the circuit breaker, thereby realizing the function of preventing mistakenly switch in the circuit breaker; and the interlocking device is safe and reliable.

Description

technical field [0001] The invention relates to a high-voltage switchgear interlocking device. Background technique [0002] At present, there are two types of high-voltage switchgear produced and used in my country: handcart cabinets and fixed cabinets. The fixed cabinet is widely used because of its simple structure, low process requirements, cheap price and convenient operation, especially it does not require large operations. The use of space is one of the main high-voltage cabinet types used in combined box-type substations. Whether the fixed switchgear is equipped with an electromagnetic operating mechanism or a spring operating mechanism, all box-type switchgear mechanical locking devices are used. The device adopts the mandatory mechanical locking method, which has the characteristics of easy operation, safety and reliability, and fully meets the functional requirements of the "five defenses" of the complete set of equipment. The adjustment is also very convenient, ...

AI Technical Summary

Problems solved by technology

Since the connection between the locking device and the circuit breaker mechanism is a hard connection, the connecting device must pass through the small hole on the side plate of the handcart before it can be connected to the opening catch on the operating mechanism. Therefore, the positioning of the handcart and the spring mechanism or The positioning of the electromagnetic mechanism must be accurate, which undoubtedly increases the difficulty of manufacturing the cabinet and handcart

2: The mechanical locking device is installed on the cabinet body, and the operating mechanism is installed on the frame. Therefore, the turning handle of the mechanical locking device to the operating mechanism of the circuit breaker has to go through multiple transfers and positioning, and the number of connecting parts is large, and the parts are difficult Processing and installation are cumbersome, difficult to adjust, poor reliability

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