一种大电流罐式环保气体绝缘开关设备

Abstract

本实用新型属于配电开关技术领域，具体涉及一种大电流罐式环保气体绝缘开关设备，包括柜体、上开关模组、下开关模组；下开关模组包括下罐体，下罐体形成封闭的下气室，下罐体内侧还设有多组断路器开关组件；上开关模组包括上罐体，上罐体形成封闭的上气室，其内侧能够充入用于绝缘的气体；上罐体内侧还设有多个隔离开关，每个隔离开关均设有主母线；本实用新型通过设置上罐体和下罐体作为两个气室，气室内充入一定压力的环保气体作为绝缘介质，罐式气体绝缘开关设备能承受更大的充气压力，更高压力的气体填充在高压导体与接地壳体之间，能够有效形成绝缘屏障，阻止电流击穿；封闭气室可防止气体泄漏，确保绝缘稳定性。

Claims

1. A large-current tank-type environmentally friendly gas-insulated switchgear comprising a cabinet, an upper switch module, and a lower switch module, characterized in that, The cabinet includes a cable compartment, an instrument compartment, an upper pressure relief channel, and a rear pressure relief channel; The lower switch module is fixed to the cable chamber, the upper switch module is located above the lower switch module, and a disc insulator for connection is provided between the upper switch module and the lower switch module; The lower switch module includes a lower tank, which forms a closed lower air chamber, and its inner side can be filled with gas for insulation. The lower tank is also provided with multiple sets of circuit breaker switch assemblies. One end of the circuit breaker switch assembly is connected to the lower tank, and the other end of the circuit breaker switch assembly is provided with an incoming line connection assembly, which is connected to a female socket for incoming lines. The upper switch module includes an upper tank, which forms a closed upper gas chamber, and its inner side can be filled with gas for insulation; the upper tank is also provided with multiple disconnect switches, and each disconnect switch is provided with a main bus. The disconnecting switch includes a grounding stationary contact, an intermediate stationary contact, a closing contact, and a moving contact, all mounted coaxially, with the moving contact slidably connected relative to the intermediate stationary contact.

2. A large current tank-type environmentally friendly gas insulated switchgear according to claim 1, characterized in that, The disc insulator has a disc structure, including an aluminum ring that provides fixed support, and multiple copper conductor inserts arranged in a triangular pattern in the middle. The aluminum ring and the copper conductor inserts are formed by epoxy resin casting.

3. A large current tank-type environmentally friendly gas insulated switchgear according to claim 1, characterized in that, The incoming line connection assembly includes a conduit connection device installed above the conduit socket. The conduit connection device is equipped with a matching overhead conduit. The conduit socket is fixedly connected to a first adapter block. The first adapter block is equipped with an incoming line conductor fixedly connected to it. The incoming line conductor is fixedly connected to the conduit conductor joint. The conduit conductor joint is slidably connected to the circuit breaker switch assembly.

4. A large current tank-type environmentally friendly gas insulated switchgear according to claim 1, characterized in that, The circuit breaker switch assembly includes an insulating support and a moving support. The insulating support is made of epoxy resin and is integrally cast with the moving support. A stationary support is provided at the tail of the insulating support, and a gasket is provided between the insulating support and the stationary support. A connecting contact and a supporting contact are fixedly installed on one side of the stationary support. An arc-extinguishing chamber is connected to the other side of the stationary support. The front side of the stationary support is fixedly connected to the stationary end of the arc-extinguishing chamber. A slider is fixedly connected to the moving end of the arc-extinguishing chamber. The slider is slidably connected to the moving support. A support frame is fixedly installed on the moving support. The support frame is fitted onto the moving end of the arc-extinguishing chamber to ensure that the moving end of the arc-extinguishing chamber is coaxially arranged with the stationary support. An insulating pull rod is fixedly connected to the moving end of the arc-extinguishing chamber. An operating mechanism that drives the moving end of the arc-extinguishing chamber moves the moving end of the arc-extinguishing chamber to realize the closing and opening of the switchgear.

5. A large current tank-type environmentally friendly gas insulated switchgear according to claim 4, characterized in that, The insulating support is provided with heat dissipation grooves at the location of the arc-extinguishing chamber to form a heat exchange channel, and a radiator is installed at the bottom of the moving support.

6. A large current tank-type environmentally friendly gas insulated switchgear according to claim 1, characterized in that, The intermediate stationary contact has a T-shaped structure. A second transition block is provided at one vertical end of the intermediate stationary contact. A disc insulator is fixedly connected to the second transition block. A guide groove is provided in the horizontal direction of the intermediate stationary contact. A guide key is fixedly installed on the moving contact. The guide key slides relative to the guide groove, so that the moving contact slides along the axial direction of the intermediate stationary contact.

7. A large current tank-type environmentally friendly gas insulated switchgear according to claim 6, characterized in that, The on contact is fixedly installed with a guide sleeve inside, and the guide sleeve is in sliding connection with the movable contact.

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