Capacitor provided with external pressure regulation bag

Abstract

The invention discloses a capacitor provided with an external pressure regulation bag. The capacitor comprises a capacitor core assembly, a capacitor casing, a capacitor casing cover, leading-out terminals, guide wires and the balancing inflated bag, wherein the capacitor casing cover is buckled with the capacitor casing; the leading-out terminals are fixedly arranged on the capacitor casing cover and electrically connected with the capacitor core assembly through the guide wires; the capacitor core assembly is located in the capacitor casing, and an airtight structure is arranged inside the capacitor casing which is filled with filling gas; the balancing inflated bag is located outside the capacitor casing, communicated with the capacitor casing, and filled with a small amount of filling gas. The capacitor can adapt to the air pressure of the external environment automatically and regulate inside pressure automatically according to the outside air pressure change, so that the pressure inside and outside keeps consistent all along, accidents of breaking and content leakage of the capacitor are avoided, and the capacitor filling gas is not discharged to the outside.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a capacitor with an external pressure regulating bag. Background technique [0002] Gas-filled capacitors are filled with inert gas to slow down the oxidation rate of components inside the capacitor and improve the insulation performance between components inside the capacitor. However, the internal pressure of the gas-filled capacitor also needs to be strictly controlled. If the internal pressure is too high, the capacitor will rupture and the contents will leak out; if the internal pressure is too low, it will affect the electrical performance of the capacitor and accelerate the oxidation of the components inside the capacitor. Shorten the life of the capacitor. However, some filling gases with good dielectric properties are toxic to the human body and are not suitable for direct discharge into the atmosphere, so it is a limitation for the application of pressure relief val...

AI Technical Summary

Problems solved by technology

However, the internal pressure of the gas-filled capacitor also needs to be strictly controlled. If the internal pressure is too high, the capacitor will rupture and the contents will leak out; if the internal pressure is too low, it will affect the electrical performance of the capacitor and accelerate the oxidation of the components inside the capacitor. Shorten the life of the capacitor

However, some filling gases with good dielectric properties are toxic to the human body and are not suitable for direct discharge into the atmosphere, so it is a limitation for the application of pressure relief valves.

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