Vertical rotary high-voltage metal-enclosed switchgear valve mechanism

Abstract

The invention relates to a valve mechanism of a longitudinal-rotating-type high-voltage metal-enclosed switchgear. The valve mechanism comprises an installation substrate; a connecting rod mechanism which is installed at one side of the installation substrate and includes three oscillating bars; a three-plate device which is connected with a valve of the longitudinal-rotating-type high-voltage metal-enclosed switchgear, wherein a front oscillating bar of the connecting rod mechanism is movably installed on the three-plate device; and a sector drive board which is installed at the other side of the installation substrate through a rotating support point and driven to rotate by an isolation circuit breaker, wherein the sector drive board is provided with an enclosed track groove which can drive the connecting rod mechanism to move. In practical operation, the sector drive board is driven to rotate by the isolation circuit breaker, and then the connecting rod mechanism is driven by the enclosed track groove in the sector drive board so as to drive the front oscillating bar in the connecting rod mechanism to realize large-span displacement, and the opening and closing of the valve are completed by the three-plate device which is connected with the valve of the longitudinal-rotating-type high-voltage metal-enclosed switchgear; and at the closing position of the valve, the valve mechanism can automatically lock the valve.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrical equipment, and relates to a valve mechanism of a vertically rotating high-voltage metal-enclosed switchgear. Background technique [0002] At present, the handcart-type high-voltage metal-enclosed switchgear valve mechanism known in the field is distributed on the left and right sides of the cabinet, and is mainly composed of a mounting base, a shaft sleeve, a scissor-shaped arm assembly, a torsion spring, and various long rods. It is connected with the pin shaft. On the left and right sides of the circuit breaker handcart, there are also grooved push plates for driving the valve mechanism. The upper and lower valves are opened or closed when the handcart is pushed and pulled out by two vertical partitions through the transmission and lifting mechanisms on both sides. Closed, because there are many transmission links and long paths, it is difficult to ensure that the two valves can...

AI Technical Summary

Problems solved by technology

[0002] At present, the handcart-type high-voltage metal-enclosed switchgear valve mechanism known in the field is distributed on the left and right sides of the cabinet, and is mainly composed of a mounting base, a shaft sleeve, a scissor-shaped arm assembly, a torsion spring, and various long rods. It is connected with the pin shaft. On the left and right sides of the circuit breaker handcart, there are also grooved push plates for driving the valve mechanism. The upper and lower valves are opened or closed when the handcart is pushed and pulled out by two vertical partitions through the transmission and lifting mechanisms on both sides. Closed, due to many transmission links and long paths, it is difficult to ensure that the two valves can be opened or closed accurately and synchronously, causing potential safety hazards

Another disadvantage of the existing valve mechanism is that there are many parts and types, and the operator needs to use the corresponding fixtures to install the parts in the cabinet one by one, which is time-consuming and labor-intensive and has a single function; Special padlock to complete, the efficiency is very low

In addition, the existing valve mechanism cabinets are arranged in a decentralized manner, which leads to the limited space occupied by the switch cabinet, which is not conducive to the miniaturization of high-voltage metal-enclosed switchgear, and is also not conducive to the improvement of equipment safety, reliability and convenience.

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