Novel built-in basin-type insulator and assembly

Abstract

The invention discloses a novel built-in basin-type insulator and assembly, comprising a first shell, a second shell, a first conductor, a second conductor, a third conductor and a built-in basin-typeinsulator. A first flange, a second flange, the first conductor and the built-in basin-type insulator are located inside the first shell. The built-in basin-type insulator of the invention is completely enclosed in the shell, is not affected by the external environment and has a long service life. The sealing structure of the built-in basin-type insulator is inside the shell. Even if leakage occurs, there is only leakage between two air chambers, and gas leakage to the outside will not be caused. The device is equipped with particle trappers on both sides, which prevents the jumping particlesinside the device from sticking to the built-in basin-type insulator to cause insulation accidents.

Description

technical field [0001] The invention relates to AC high-voltage and ultra-high-voltage power transmission system equipment, in particular to a new type of built-in basin insulator and components in the technical field of gas-insulated metal-enclosed transmission pipeline bus (abbreviated as GIL) and gas-insulated combined electrical equipment (abbreviated as GIS). Background technique [0002] With the acceleration of urbanization in my country, the load increase of urban power grids, and the application of the West-to-East Power Transmission Project, UHV AC GIL has become an effective option for power transmission due to its unique advantages. GIL plays an increasingly prominent role in transmission and transformation systems. GIL It belongs to long-distance power transmission bus pipes, and the internal conductors are traditionally supported by built-in basin insulators, resulting in disadvantages such as difficult assembly, high cost, and unsightly appearance. in, [0003...

AI Technical Summary

Problems solved by technology

[0004] Traditional built-in pot insulators such as figure 2 As shown, the pot insulator a is installed between the shells b and c, fastened with the shell by bolts, and there are air-tight gaskets d on both sides. The pot insulator a of this structure is directly exposed to the environment, and the external Radiation and moisture will shorten the service life of pot insulators, and epoxy resin, the main material of pot insulator a, has hygroscopic material properties, and external moisture will enter the interior of the equipment through pot insulator a, which may easily cause insulation accidents

And because the pot insulator a is sandwiched between the shells, it is impossible to conduct electricity, and an additional grounding plate e is required to connect the shells b and c

Both sides of the pot insulator a are connected to the shell by bolts, and there are two more airtight surfaces than the built-in pot insulator, which increases the risk of air leakage

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