Unthreaded terminal mechanical explosion-proof dry type capacitor

Abstract

The invention relates to an unthreaded terminal mechanical explosion-proof dry type capacitor, which comprises a terminal component, a cover component, an explosion-proof sheet, copper foil, an insulation sleeve, a core component, discharging resistors, a bottom sleeve, a shell and insulation paper, wherein the insulation sleeve is sleeved outside the copper foil; one end of the copper foil is welded on the core, while the other end is connected with the cover plate by spot welding through the explosion-proof sheet; the insulation paper is arranged in the shell; the discharging resistors are welded on the two end faces of the core; the core is arranged in the shell; the bottom of the core is sleeved with the bottom sleeve; and dry epoxy is filled in the shell, the end face of the core is sealed, the bottom sleeve is fixed, the cover component is closed and sealed, and the terminal component is pressed in. Compared with the prior art, the capacitor has the advantages that: due to a dry structure, the oil leakage drawback of an oil type capacitor is solved, and the product performance is improved; the explosion-proof safety of the dry type explosion-proof capacitor is improved; the central positioning of the core of the capacitor by the bottom sleeve is enhanced and the insulation strength of the shell is ensured; and the capacitor can be used by simply inserting a wire, and the use is convenient, safe and reliable.

Description

technical field [0001] The invention relates to a dry capacitor, in particular to a mechanical explosion-proof dry capacitor with no screw terminal. Background technique [0002] The current mechanical explosion-proof capacitors generally adopt an oil-type structure, that is, the capacitor core is installed in the shell, filled with oil and then sealed with a cover. The lead-out terminals are generally wires or 0.8×6.3 inserts (commonly known as 250 terminals). A common problem in oil-type capacitors is that they are prone to oil leakage and pollute the environment. The second is the influence of oil on the capacitor film, which is normal at normal temperatures. When the temperature is high, the capacitor film will swell and affect the life of the capacitor. Unless silicone oil is used, the cost is high. The wire terminal length of the oil structure capacitor is fixed, so it cannot meet the needs of different products; 250 terminals need to be equipped with 250 plugs when w...

AI Technical Summary

Problems solved by technology

The wire terminal length of oil-type structure capacitors is fixed, so it cannot meet the needs of different products; 250 terminals need to be equipped with 250 plugs when wiring, and the electrodes are exposed, and external insulation is required, otherwise it is unsafe

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