CN2232621Y

CN2232621Y - High-voltage dry type self-recover type reactive compensating capacitor

Info

Publication number: CN2232621Y
Application number: CN 95214707
Authority: CN
Inventors: 平志刚; 郭仲礼; 王龙; 贾延春
Original assignee: 王一力
Priority date: 1995-06-23
Filing date: 1995-06-23
Publication date: 1996-08-07
Anticipated expiration: 2005-06-23

Abstract

The utility model relates to a capacitor which is a high-voltage dry type self-recover type reactive compensating capacitor and is composed of a housing, capacitor unit cores connected in series, epoxy resin, and leading-out terminals. The metallized polypropylene film in the capacitor unit core adopts a reticular film structure that a micro fuse is arranged and a structure of inner series connection that isolation belts are divided into metal film belts. The housing is made of glass fiber reinforced plastic and also fire retardant epoxy resin, both terminals of the capacitor unit cores are connected with voltage-sharing discharging resistances in parallel. A plurality of unit cores are connected in series by using annealed copper strand wires, and both terminals are connected with the copper bolt-shaped leading-out terminals. The utility model has favorable self-recovering performance and the ability of withdrawing high voltage and is used in electric power systems with 3-10 kv.

Description

High pressure dry self-cure type reactive-load compensation capacitor

The utility model relates to a kind of capacitor, relates to a kind of high pressure dry self-cure type reactive-load compensation capacitor or rather.

High pressure dry self-cure type reactive-load compensation capacitor is a kind of metalized polypropylene condenser, is made of shell, leading-out terminal, capacitor body and epoxy resin.Wherein capacitor body is wound on the mandrel by polypropylene film and polypropylene metallized film and constitutes.Because the metal film on the polypropylene metalized film is the net metal film that is connected by microfuze, and with the isolation strip polypropylene metalized film is saved into number of metal film band and form the inner series structure, thereby capacitor has self-healing property and higher withstand voltage preferably.

The purpose of this utility model is that the metalized polypropylene condenser to said structure makes improvements design, makes to have higher resistance to pressure, and can explosion-proof, fire prevention.

The utility model high pressure dry self-cure type reactive-load compensation capacitor, by shell, leading-out terminal, place capacitor unit fuse that shell is connected in series and the epoxy resin that is cast in shell to constitute, the capacitor unit fuse is wound on the mandrel by the net-like metallic polypropylene film of polypropylene film, band microfuze and by the metallized polypropylene film that the metal film band is saved in the isolation strip and constitutes, and it is characterized in that:

Described capacitor unit fuse two ends also and be connected to and all press resistance and place in the shell; Described shell by the anti-flammability glass reinforced plastic pipe and on, following protecting cover constitutes; Described epoxy resin is fire-retarded epoxy resin.

Described capacitor unit fuse has 2 or 3 or 4 or 5, is welded with annealed copper strand wire between two capacitor unit fuses.

Described leading-out terminal is the copper bolt that is fixed on the upper and lower protecting cover of shell.

The utility model improves the high pressure dry self-cure type reactive-load compensation capacitor of structure, have characteristics such as explosion-proof, fire prevention, the volume low capacity is big, after taking all pressure measures in the capacitor, make the rated voltage of single capacitor can reach 1.5～2.2KV, can be used for doing reactive power compensation in the electric power system of 3～10KV.

Further specify technology of the present utility model below in conjunction with a embodiment and an accompanying drawing with 4 capacitor unit fuses.

Fig. 1 is the utility model capacitor plan structure schematic diagram;

Fig. 2 is the utility model capacitor overall structure schematic diagram.

Referring to Fig. 1, the utility model high pressure dry self-cure type reactive-load compensation capacitor mainly comprises shell 1, epoxy resin 2, all presses resistance 3 and capacitor unit fuse 4, and other has leading-out terminal 5 (see figure 2)s.

Capacitor unit fuse 4 can be made of stacked being wound on the mandrel 41 of three-layer polypropylene film and double-layer metallization polypropylene film interval.Metallized film adopts at present the net metal film of the band fuse of common application in the electric capacity manufacturing industry and with the inner series metal film of metalized film spacer knobs film forming band, to improve the self-healing performance and the withstand voltage of capacitor, when local fault takes place when, microfuze at first fuses and self-healing immediately, thereby capacitor is difficult to assemble big energy, it is on fire can not blast, and the serial connection technology of inner series has improved the withstand voltage of capacitor.

Referring to Fig. 2, capacitor case 1 is made of phenolic fiberglass reinforced plastics laminated tube 11, last protecting cover 12 and following protecting cover 13.4 capacitor unit fuses 4 with annealed copper strand wire 6 serial connection, and at each capacitor unit fuse 4 two ends and connect dividing potential drop discharge resistance 3, are generally M Ω level, can adopt metalfilmresistor.Inserting in the frp layer pressure pipe 11 serial connection and 4 unit fuses that connect and resistance again, pouring and flame retarding epoxy resin 2 makes the location, fixedly the copper bolt 5 of (not shown) is as the leading-out terminal of capacitor with nut respectively on upper and lower protecting cover 12,13, and bolt has that central through hole passes for the annealed copper strand wire of two end unit fuses and tin filling is fixed.

The utility model is simple in structure, making is easy, self-healing property is good, withstand voltage is high, solidify behind the unit fuse pouring and flame retarding epoxy resin, make the inner impossible excessive internal pressure that produces of capacitor, can guarantee that capacitor safe works reliably, particularly in capacitor, increase and all press electric resistance, improved the operating coefficient of safety of capacitor, in addition, glass fibre reinforced plastics casing also plays an important role to the trouble free service that guarantees capacitor.

Claims

1, a kind of high pressure dry self-cure type reactive-load compensation capacitor, by shell, leading-out terminal, place capacitor unit fuse that shell is connected in series and the epoxy resin that is cast in shell to constitute, the capacitor unit fuse is wound on the mandrel by the net-like metallic polypropylene film of polypropylene film, band microfuze and by the metallized polypropylene film that the metal film band is saved in the isolation strip and constitutes, and it is characterized in that:

Described capacitor unit fuse two ends also and be connected to and all press resistance and place in the shell; Described shell is made of anti-flammability glass reinforced plastic pipe and upper and lower protecting cover thereof; Described epoxy resin is fire-retarded epoxy resin.

2, high pressure dry self-cure type reactive-load compensation capacitor according to claim 1 is characterized in that: described capacitor unit fuse has 2 or 3 or 4 or 5, is welded with annealed copper strand wire between two capacitor unit fuses.

3, high pressure dry self-cure type reactive-load compensation capacitor according to claim 1 is characterized in that: described leading-out terminal is the copper bolt that is fixed on the upper and lower protecting cover of shell.