Spring operators for circuit breakers and circuit breakers

Abstract

The present invention provides a spring operator for a breaker and a breaker, which can not only realize high-speed movement of the contact point of the breaker, but also reduce the number of parts and reduce the size of the operator. In order to solve the above problems, it is characterized in that the driving force of the closing spring (28) for closing the fixed contact (62) and the movable contact (63) of the blocking part (405) is transmitted to the cam (3) , the driving force of the cam (3) is transmitted and the blade part is extended in four directions and installed on the main rod (5) on the main shaft: when the blocking part (405) is turned on, it is connected with the The first roller (6) that the cam (3) contacts; the first pin (5b) that connects the connecting rod (68), the second pin (5b) that connects the blocking spring link (25) that transmits the driving force of the blocking spring (26) The pin (5a), and the second roller (7) that transmits the driving force of the shutoff spring (26) to the shutoff control mechanism (401), transmit and maintain these driving forces in substantially the same plane.

Description

technical field [0001] The present invention relates to a spring operator for a breaker and a breaker, and more particularly to a spring operator for a breaker and a breaker suitable for use in high-voltage power such as substations and switching stations of electric power systems. Background technique [0002] With the increase in capacity of power transmission systems, the breaking capacity of circuit breakers used in substations and switching stations has increased, and high reliability is required. In order to improve the reliability of the interrupter, it is important to simplify the structure by reducing the number of parts. [0003] Generally, a blower-type air circuit breaker is used for a large-capacity circuit breaker. This blower-type air circuit breaker has a structure that discharges gas to eliminate the arc generated during the circuit breaker, and it is known that not only the structure of the circuit breaker is simple , the enclosed insulating gas such as SF...

AI Technical Summary

Problems solved by technology

Therefore, the position of the center of gravity of the main rod is located at a predetermined distance from the center of rotation, and the moment of inertia of the main rod around the center of rotation is larger than the moment of inertia around the center of gravity (parallel axis theorem), and the rotational speed of the main rod during the interruption operation may be difficult to increase

[0013] In addition, the driving force acting on the main rod to turn off and on is transmitted to the contact rod through the torsion of the main shaft. Therefore, when the torsional rigidity of the main shaft is small, the transmission loss of the driving force increases and the moving speed of the contact point increases. possibility of decline

[0014] Furthermore, since the rods are arranged at three positions in the axial direction of the main shaft, there is also a problem that the size of the manipulator in the width direction is reduced.

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