Powder-gas-driven ultrahigh-speed operating mechanism

A gas-driven, operating mechanism technology, applied in the protection switch operation/release mechanism and other directions, can solve the problems of poor shell extraction, shell fracture, limiting the power of ammunition, etc., to achieve compact structure, high reliability, and reduced size. Effect

Active Publication Date: 2014-11-05
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned launch type operating mechanism can only realize fast closing, but cannot realize fast opening
Moreover, due to the adoption of the bolt backseat structure, the cartridge case will expand and stick to the chamber under the action of gunpowder gas. If the cartridge case is too long or the chamber pressure is too high, it will lead to poor extraction of the cartridge case, and even cause the cartridge case to break. This limits the The power of the ammunition used is not conducive to the improvement of the action speed of the operating mechanism

Method used

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  • Powder-gas-driven ultrahigh-speed operating mechanism

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Embodiment Construction

[0016] An embodiment of the gunpowder gas-driven ultra-high-speed operating mechanism of the present invention is as follows Figure 1~Figure 2 As shown, a single-break DC circuit breaker for a class above 200KV includes a transmission member 3 which is guided and moved along the left and right directions of the opening and closing movement, and empty shell launchers arranged on the left and right sides of the transmission member 3 .

[0017] Each blank bullet launching device has the same structure, and can refer to the structure of existing automatic firearms, and can realize loading, percussion and shell ejection of blank bullets 10, including casing 1, ammunition supply, and being arranged at the front end of casing 1. Form the gun barrel 9 of ejection port, and the ejection port of each gun barrel 9 is all towards transmission part 3; For ammunition adopt magazine 11, certainly, also can adopt bullet chain or magazine etc. in other embodiments; In the present embodiment ,...

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Abstract

The invention relates to a powder-gas-driven ultrahigh-speed operating mechanism which comprises a transmission part with an opening position and a closing position, and two blank cartridge transmitting devices driving the transmission part to move, wherein the blank cartridge transmitting devices comprise bolts, recoil springs and strikers; the bolts are provided with reverse positions and forward positions; the two blank cartridge transmitting devices are arranged on the two sides of opening and closing movement directions of the transmission part respectively, and provided with corresponding barrels respectively; jet orifices of the two barrels face towards the transmission part; axes of the two barrels are parallel; projections of the two barrels in straight lines parallel to the axes of the barrels have a superposition section; the bolts of the two blank cartridge transmitting devices are fixedly connected with piston guide rods respectively; the piston guide rods are arranged in gas guide cavities on corresponding sides in a guide sealing inserting manner; and the barrel on any one side is communicated with the gas guide cavity on the other side by a correspondingly arranged gas guide channel. The powder-gas-driven ultrahigh-speed operating mechanism can achieve quick opening and quick closing of a circuit breaker.

Description

technical field [0001] The invention relates to an ultra-high-speed operating mechanism driven by gunpowder gas. Background technique [0002] Some high-voltage circuit breakers will generate a large current when they are broken, so they have clear requirements for the breaking time. For example, in a DC power grid with a voltage level of 320kV, the rising speed of the DC side current is 3.5kA / ms when a short circuit occurs. Assuming that the current value on the line is 2kA during normal operation, the short-circuit current on the line can reach 9kA after 2ms, that is, a high-voltage DC circuit breaker capable of breaking 9kA current must be able to quickly act within 2ms to cut off the current. However, the opening speed of the existing spring operating mechanism and hydraulic operating mechanism cannot realize breaking the circuit breaker in such a short time; while the speed of the magnetic mechanism can meet the requirements of double-break or multi-break circuit breake...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
Inventor 林麟张豪张博刘畅郭煜敬金光耀张高潮张友鹏李艳邓亚李旭
Owner STATE GRID CORP OF CHINA
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