Solid-sealed insulation outdoor high-voltage switchgear

Abstract

The invention relates to outdoor high-voltage switchgear, in particular to solid-encapsulation insulation outdoor high-voltage switchgear. The solid-encapsulation insulation outdoor high-voltage switchgear comprises a shell. External connection insulating sleeves which extend into the shell are installed on two corresponding side faces of the shell. An insulation frame seat is installed in the shell. Insulation frame sleeve parts are arranged on two corresponding side faces of the insulation frame seat. The insulation frame sleeve parts are connected with the insulating sleeves in an inserted mode. A vacuum tube chamber is formed in the insulation frame seat. A vacuum tube is arranged inside the vacuum tube chamber. Connectors at the two ends of the vacuum tube are connected with loop parts installed on the insulation frame sleeve parts. The vacuum tube chamber and the connectors are enclosed space. According to the solid-encapsulation insulation outdoor high-voltage switchgear, enough power frequency withstand voltage levels are provided between phases and between phases and the ground; the 10KV outdoor high-voltage switchgear truly realizes disconnector miniaturization, saves energy, and is environmentally friendly, safe and reliable.

Description

technical field [0001] The invention relates to an outdoor high-voltage switchgear, in particular to a solid-sealed and insulated outdoor high-voltage switchgear. Background technique [0002] There are generally two methods for the phase-to-phase and phase-to-ground insulation of outdoor high-voltage vacuum circuit breakers: first, keep a large insulation space and creepage distance between phases and phases, and between phases and ground, such as the widely used ZW32-12 series outdoor High voltage vacuum break. Second, use a sealed box, which is filled with inert gas (such as SF6 gas), such as the ZW20-12 series outdoor high-voltage vacuum circuit breaker. The defect of the first method is that the whole product has a large size, takes up a lot of space, wastes materials, and is not in line with the trend of product miniaturization. The disadvantage of the second method is that the box may leak air after long-term use, and the operation management of the switch is diffic...

AI Technical Summary

Problems solved by technology

The disadvantage of the first method is that the entire product is large in size, takes up a lot of space, wastes materials, and is not in line with the trend of product miniaturization

The disadvantage of the second method is that the box may leak air after long-term use, and the operation management of the switch is difficult. If the product explodes during operation, it will release toxic gas that will endanger the environment and human beings, and the product will be disposed of with inert gas after the service life is over. It is very difficult and will cause long-term environmental pollution. The relevant national departments are also formulating emission standards, and the use of SF6 gas will not be allowed for medium-voltage circuit breakers.

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