A box-type high-voltage power capacitor

A power capacitor and high-voltage technology, applied in capacitors, electrical components, etc., can solve problems such as high cost, environmental pollution, and low reliability, and achieve the effects of prolonging service life, improving reliability, and reducing operating temperature rise

CN109003811AInactive Publication Date: 2018-12-14GUILIN POWER CAPACITOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-12-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a box-type high-voltage power capacitor, comprising a shell, a core and a compensating heat dissipation device; the shell is a hollow structure made of a stainless steel plate, and the gap inside is filled with an insulating impregnating agent; The core is mounted in the shell and immersed in the insulation impregnating agent; A sleeve connected with the core is arranged on the top of the shell; The compensating heat dissipation device is mounted on the outer side wall of the shell, and expands or contracts according to the thermal expansion and cold contraction of theinsulating impregnating agent to compensate for volume change, and also causes the circulating flow of the insulating impregnating agent to accelerate the dissipation of heat inside the shell. The invention has the advantages that the stainless steel plate is directly used on the capacitor instead of a common steel plate, and the surface treatment cost can be saved; the compensation heat dissipation device replaces an expander with more solder joints, reduces the possibility of oil leakage, improves the reliability of the capacitor, reduces the operation temperature rise of the capacitor andprolongs the service life of the capacitor.
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Description

technical field

[0001] The invention relates to the technical field of high-voltage power capacitors, in particular to a box-type high-voltage power capacitor. Background technique

[0002] In the power system, if a large-capacity capacitor compensation device is used in a substation, it will overcompensate, and if no capacitor compensation device is used, it will undercompensate too much. It is very important to implement accurate compensation. The power consumption in remote rural areas is sparse and scattered, and maintenance and management are inconvenient. A small and medium-sized Capacitor compensation devices with high capacity, compact structure, high reliability, and low cost have a wide market demand for power capacitor compensation in rural power grids. Substances will expand when heated and contract when cooled. In order to improve the electrical performance of the capacitor, the interior of the capacitor is evacuated into a high vacuum, and then filled with impr...

Examples

Embodiment Construction

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0025] like figure 1 As shown, a box-type high-voltage power capacitor includes a casing 1 , a core 2 and a compensating cooling device 3 . The shell 1 is a hollow structure made of stainless steel plate. The state has stepped up environmental protection management, and ordinary steel plates are used on capacitors, which require pickling, alkali neutralization, and then phosphating and other surface treatments. The process is complicated and costly, causing pollution to the environment. Many provinces and cities prohibit the construction of such production lines . The use of stainless steel plate does not require the above surface treatment. Preferably: the shell 1 uses a 3mm thick stainless steel plate instead of...