CN102592827A

CN102592827A - Radiating type DC-filtering and DC-support metallic film capacitor

Info

Publication number: CN102592827A
Application number: CN2012100898218A
Authority: CN
Inventors: 魏云龙
Original assignee: NANCHANG TUOCHEN ELECTRONIC CO Ltd
Current assignee: NANCHANG TUOCHEN ELECTRONIC CO Ltd
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2012-07-18

Abstract

A radiating type DC-filtering and DC-support metallic film capacitor comprises a housing, core sets, shunt-wound conductor strips, leading-out conductor strips, lifting handles, core boxes, hole gaskets, insulating oil layers, insulators, copper gaskets, copper nuts and stems, wherein the core sets are wrapped in the housing; the shunt-wound conductor strips are horizontally connected with the core sets; the leading-out conductor strips are vertically connected with the core sets; the lifting handles are welded outside the housing; the core boxes are clamped between the housing and the core sets; the insulators are welded at the upper parts of the leading-out conductor strips; hole gaskets are mounted between the insulators and the core sets; the insulating oil layers are arranged between the hole gaskets and the insulators; and the stems are arranged at the upper ends of the insulators, and are fixed on the insulators through the copper nuts and the copper gaskets. The film capacitor provided by the invention has complex technology and is high-tech, can be used in harsh environments, and has higher product performance requirement. Therefore, many capacitor manufacturing enterprises can not enter the fields.

Description

Heat radiating type DC filtering direct current support metal film capacitor

Technical field

The present invention relates to film capacitor, be specially heat radiating type DC filtering direct current support metal film capacitor.

Background technology

The tradition DC filtering is to adopt big capacity aluminium electrolytic capacitor, but the aluminium electrolytic capacitor life-span is short, has only the useful life of 3-5; And rated operational voltage is low; If at the above circuit filtering of 800Vdc; Just must use a plurality of aluminium electrolytic capacitors to come to satisfy behind the series, parallel requirement of voltage; A plurality of product strings also connect the equivalent series resistance (ESR) and the equivalent series inductance increase that can make circuit, the filter effect variation, and heating increases.

Modern high power contravariant system; DC filtering/direct current is supported capacitor to be required very high; Life requirements will reach 100,000 hours more than (11 years), and high like this working life aluminium electrolytic capacitor can't be accomplished; Therefore, the domestic and international production of the DC filter capacitors production firm of high power contravariant circuit use has all adopted metallic film capacitor to substitute.

At present, domestic and international mass-produced DC filtering/direct current supports the shell that capacitor uses, and generally all belongs to dull and stereotyped shell of common stainless steel and the dull and stereotyped shell mechanism of aluminium, and the infiltration of this type shell infusion epoxy resin is bad, and immersion oil efficient is low, and radiating effect is poor.Fast development along with power electronics industry; Applying of high-power and super high power device; The problem that the dull and stereotyped shell mechanism of conventional dc filtering capacitor exposes is more and more, and sense was low in market pressed for, internal resistance is little, shock-resistant electric current is big, effective current is big, the better Novel DC filtering capacitor of heat dispersion.

Summary of the invention

The technical problem that the present invention solved is to provide heat radiating type DC filtering direct current support metal film capacitor, to solve the shortcoming in the above-mentioned background technology.

The technical problem that the present invention solved adopts following technical scheme to realize:

Heat radiating type DC filtering direct current support metal film capacitor; Comprise body, core group, shunt leads bar, draw lead-in wire bar, handle, bag core box, hole pad, insulation oil reservoir, insulator, copper washer, copper nut and stem, said core group is wrapped in body inside, said shunt leads bar is laterally connecting the core group; The said lead-in wire bar of drawing is vertically connecting the core group; Said handle is welded on the outside of body, accompanies the bag core box between said body and the core group, and insulator is being riveted on the said lead-in wire bar top of drawing; Porose pad is installed between said insulator and the core group; Be the insulation oil reservoir between said hole pad and the insulator, said insulator upper end is a stem, and said stem is fixed on the insulator through copper nut and copper washer.

Among the present invention, what said body can be in square, rectangle or the ellipse is a kind of.

Beneficial effect

The invention belongs to complex process, with high content of technology, applying working condition is abominable, and properties of product require very high, and therefore, a lot of capacitor manufacturing enterprises all can't get into this field.

Adopt scientific and reasonable also cascaded structure and lead-out mode, reduce internal resistance and interior sense, reduce hear rate power; Increase heat absorption, area of dissipation, reducing the product temperature rise is the key issue that the designed enclosures internal tooth will solve.

The designed enclosures internal tooth has reached following purpose: 1. increase from the inner surface of outer cover of capacitor body, the heat absorption of core group and amass, make the capacitor internal heat be delivered to case surface fast; 2. the heat radiation of immersion oil product has had the path of convection current, and the product internal heat is evenly outwards transmitted; 3. dry type product, potting compound be infiltration downwards easily, and making does not have air gap and bubble between core group and shell, increases insulation, is beneficial to heat radiation.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is a partial structurtes sketch map of the present invention.

Fig. 3 is a partial structurtes sketch map of the present invention.

Fig. 4 is a partial structurtes sketch map of the present invention.

Embodiment

For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.

Referring to Fig. 1; The structural representation of heat radiating type DC filtering direct current support metal film capacitor, heat radiating type DC filtering direct current support metal film capacitor comprises body 1, core group 2, shunt leads bar 3, draws lead-in wire bar 4, handle 5, bag core box 6, hole pad 7, insulation oil reservoir 8, insulator 9, copper washer 10, copper nut 11 and stem 12; Said core group 2 is wrapped in body 1 inside; Said shunt leads bar 3 is laterally connecting core group 2, and the said lead-in wire bar 4 of drawing is vertically connecting core group 2, and said handle 5 is welded on the outside of body 1; Accompany bag core box 6 between said body 1 and the core group 2; Insulator 9 is being riveted on said lead-in wire bar 4 tops of drawing, and porose pad 7 is installed between said insulator 9 and the core group 2, is insulation oil reservoir 8 between said hole pad 7 and the insulator 9; Said insulator 9 upper ends are stem 12, and said stem 12 is fixed on the insulator 9 through copper nut 11 and copper washer 10.

Referring to Fig. 2, Fig. 3, Fig. 4, what the partial structurtes sketch map of heat radiating type DC filtering direct current support metal film capacitor, said body 1 can be in square, rectangle or the ellipses is a kind of.

More than show and described basic principle of the present invention and principal character and advantage of the present invention; The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention, and under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications; These variations and improvement all fall in the scope of the invention that requires protection, and the present invention requires protection range to be defined by appending claims and equivalent thereof.

Claims

1. heat radiating type DC filtering direct current support metal film capacitor; Comprise body, core group, shunt leads bar, draw lead-in wire bar, handle, bag core box, hole pad, insulation oil reservoir, insulator, copper washer, copper nut and stem, said core group is wrapped in body inside, said shunt leads bar is laterally connecting the core group; The said lead-in wire bar of drawing is vertically connecting the core group; Said handle is welded on the outside of body, accompanies the bag core box between said body and the core group, and insulator is being riveted on the said lead-in wire bar top of drawing; Porose pad is installed between said insulator and the core group; Be the insulation oil reservoir between said hole pad and the insulator, said insulator upper end is a stem, and said stem is fixed on the insulator through copper nut and copper washer.

2. heat radiating type DC filtering direct current support metal film capacitor according to claim 1 is characterized in that, what said body can be in square, rectangle or the ellipse is a kind of.