堵头、绝缘拉杆组件及其防护方法、灭弧室

Plug, insulating pull rod component, protection method of insulating pull rod component and arc extinguish chamber

Abstract

The invention provides a plug, an insulating pull rod component, a protection method of the insulating pull rod component and an arc extinguish chamber. The plug comprises a connection portion and a retaining portion, the connection portion is used for connection with a connector of an insulating pull rod of the insulating pull rod component, and the retaining portion is used for entering an inner hole of an iron pull rod of the insulating pull rod component along with the connector to match with the hole wall of the iron pull rod so as to prevent internal hot air flow in the iron pull rod from causing impact after flowing towards the connector. Since the plug with the retaining portion is connected to the connector, high-speed high-temperature high-pressure hot air flow generated in an opening process can be intercepted by the retaining portion when flowing towards the connector along the interior of the iron pull rod to cause impact, and accordingly direct impact of the hot air flow to a joint of the connector and the iron pull rod is avoided, the joint is protected effectively, erosion and fusion welding are avoided, tripping of the iron pull rod and the insulating pull rod is avoided, and normality in operation of the arc extinguish chamber is guaranteed.
本发明提供了一种堵头、绝缘拉杆组件及其防护方法、灭弧室,堵头包括用于与绝缘拉杆组件的绝缘拉杆的连接头相连的连接部、用于随连接头进入绝缘拉杆组件的铁拉杆的内孔中并与铁拉杆的孔壁配合以阻挡铁拉杆内部热气流向连接头处冲击的阻挡部。本发明的有益效果在于:采用堵头连接在连接头上,由于堵头具有阻挡部,这样在分闸过程中产生的高速高温高压的热气流沿铁拉杆内部向连接头处冲击时会被阻挡部截止,从而避免了热气流直接冲击连接头与铁拉杆的连接部位,有效对连接部位进行了防护,避免了烧蚀和熔焊,从而避免铁拉杆和绝缘拉杆脱扣,保证灭弧室的正常操作。

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Patent Citations (4)

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