Explosion-proof capacitor

Abstract

An explosion-proof capacitor, belonging to the technical field of power capacitors, aimed at existing power capacitors, including power capacitors with good internal heat conduction, the heat at the center of the capacitor is not easy to dissipate and cause local temperature to be too high; the invention provides an explosion-proof capacitor, It includes a shell, an aluminum cover, a terminal, an insulating sleeve, a silicone ring, a nut, an explosion-proof plate, a copper foil, and an internal capacitor core. The shell is cylindrical, and a cylindrical cavity is arranged in the middle of the shell. Cooling cavity, the upper part of the cooling cavity is provided with an inlet pipe, the lower part of the cooling cavity is provided with a discharge pipe, and the inside of the cooling cavity is provided with a spoiler; the invention takes away heat through the flow of the cooling medium in the cooling cavity, thereby preventing the middle part of the capacitor from Potential safety hazards caused by excessive temperature.

Description

technical field [0001] The invention relates to the field of power capacitors, in particular to an explosion-proof capacitor. Background technique [0002] A capacitor is a device that stores charges. A layer of insulating dielectric is sandwiched between two metal electrodes. When a voltage is applied between the two metal electrodes, charges will be stored on the electrodes, so capacitors are energy storage components. Capacitors have a wide range of functions in circuits, including coupling, filtering, resonance, integration, differentiation, and so on. [0003] Power capacitors are widely used in various situations such as factory power distribution systems, residential area power distribution systems, municipal commercial buildings, traffic tunnel power distribution systems, box transformers, complete cabinets, and outdoor distribution boxes; but power capacitors are in the face of current During the disturbance process, high temperature and high pressure will be gener...

AI Technical Summary

Problems solved by technology

[0003] Power capacitors are widely used in various situations such as factory power distribution systems, residential area power distribution systems, municipal commercial buildings, traffic tunnel power distribution systems, box transformers, complete cabinets, and outdoor distribution boxes; but power capacitors are in the face of current During the disturbance process, high temperature and high pressure will be generated, posing safety hazards, so the explosion-proof function of the capacitor is an indispensable function

In the existing capacitors, some capacitors are filled with heat-conducting medium to facilitate the conduction of heat to the shell. However, the temperature in the central area of ​​the capacitor is still higher than that of the surrounding area, which poses a safety hazard.

Images