CN201608055U - Capacitor device - Google Patents

Abstract

The utility model provides a capacitor device. The structure of the capacitor device is as follows: capacitor elements are formed by exposing the side edge parts of an electrode foil at the two side end parts, and are combined and contained in a container filled with insulating fluid so as to improve the insulating property and radiating property between the exposed electrode foil and the container. When the exposed side edge parts at the two side end parts of the electrode foil are combined to form the capacitor elements, the exposed electrode foils (3) of parallel combinations (2) with parallel arrangement of the capacitor elements (1) are folded. A wavy convex-concave surface (7a) side of an insulation reinforcing board (7) is contacted with a folded electrode foil (3) with the parallel combinations (2) of the capacitor to form the capacitor, the insulating property between the electrode foil (3) of the parallel combinations of the capacitors and the container is ensured by the insulation reinforcing board (7), and the convection access of insulating fluid is ensured by concave parts.

Description

Capacitor device

Technical field

The utility model relates to the capacitor device that uses in related fields such as electric power.

Background technology

As everyone knows, capacitor sub-prime as usefulness such as electric power, be to make the interlaced tubulars that are rolled into of dielectric such as thin dielectric films such as electrode foils such as pair of aluminum and polypropylene or paper, and the side edge part that guarantees the pair of electrodes paper tinsel two side-prominent from the dielectric side edge part respectively, again this tubular is deformed into flat and the capacitor sub-prime that constitutes.Such capacitor sub-prime has just become the side edge part of electrode foil in the outstanding this form in the volume end of both sides.

With this form, be set up in parallel from the outstanding capacitor sub-prime of dielectric in the volume end of both sides by a plurality of electrode foil side edge parts and form aggregate.Its aggregate is received into filling insulating oil or insulating gas etc. dielectric fluid casing or jar etc. container the time, to expose at the capacitor electrode foil of establishing side by side outside the assembly that is set up in parallel by a plurality of capacitor sub-primes with pressure plare or insulating paper and cover, with the electrode foil guaranteeing to expose and the insulation between container.

Figure 3 shows that the stereogram of the jacketed electrode paper tinsel outside example that comprises broken section.In addition, Fig. 3 has represented the end of a side, and opposite side has identical construction.Among Fig. 3,6 capacitor sub-primes 1 are set up in parallel and constitute assembly 2 arranged side by side, in order to coat the outside of the electrode foil 3 that exposes from assembly 2 arranged side by side, thereby insert the case dress insulation stiffener 4 that is made of pressure plare.And the capacitor aggregate is accommodated in the casing (not having diagram), thereby the filling insulating oil constitutes capacitor device.

The utility model content

The technical problem that solves

The capacitor sub-prime is in the running because of generation inner heats such as dielectric losses.The deterioration of the capacitor sub-prime that causes for preventing to generate heat just needs to strengthen heat radiation, and the temperature of suppression capacitor sub-prime rises.

But, as in the past, coat the electrode foil 3 that exposes from capacitor assembly 2 arranged side by side with case dress insulation stiffener 4 or insulating paper, just do not reach the purpose that produces efficiently radiates heat by exposing of electrode foil 3.Because the existence of insulation stiffener 4 has just hindered the circulation of insulating oil, hinder heat exchange on the contrary, reduced radiating effect.

For avoiding this, can consider for example will insulate stiffener 4, keep the corner portions located bight part (upper and lower side bight shown in Figure 3) that constitutes arranged side by side of its covering capacitor assembly 2 each capacitor sub-prime 1 arranged side by side, excise the part that it is positioned at capacitor bank body 2 middle bodies.But, after the excision electrode foil 3 is exposed, during assembling operation, for example when putting into casing, may be because the exposed division of hand or other article contact electrode paper tinsels, make electrode foil take place damaged and distortion etc., thereby cause electrode foil the high electric field part of burr shape to occur, or produce high electric field part because of rolling of electrode foil folding part etc.In addition, easily exert an influence because of sneaking into impurity in the container.In either case, all might be because of insulation stiffener 4 produce inclination etc. in casing, cause the convection current stream of insulating oil to narrow down and hinder heat exchange.

Technical scheme

A kind of capacitor device, the electrode foil side edge part is being exposed the electrode foil side that capacitor that a plurality of capacitor sub-primes of formation are set up in parallel is set up in parallel body from both side ends, cover the electrode foil outside of exposing with the contact of insulation stiffener, with this as the capacitor aggregate, in the be accommodated in filling container of dielectric fluid and in the capacitor device that constitutes;

It is characterized in that the protuberance of capacitor sub-prime electrode foil in the both sides of exposing is folded respectively, the face of the electrode foil that the contact of insulation stiffener is folded is a ripple plate shape.

Beneficial effect

The rolling of impaired or electrode foil folding part by the electrode foil end that prevents to give prominence to can be improved the insulation property between electrode foil end and container, and the mitigation of electric field between keeping over the ground.In addition, because of having improved the cooling effect of capacitor sub-prime, can realize capacitor device miniaturization and high capacity.And then, suppressed the thermal degradation when of capacitor sub-prime and make its life-span elongated, can obtain the capacitor device of high reliability.

Description of drawings

Fig. 1 is the assembling stereogram of capacitor aggregate one end under the execution mode of the present utility model.

Fig. 2 is the general profile chart of the capacitor device of execution mode of the present utility model.

Fig. 3 is the assembling stereogram of existing capacitor aggregate one end.

Embodiment

Fig. 1 is the assembling stereogram of capacitor aggregate one end under the execution mode of the present utility model.Fig. 2 is the general profile chart that the capacitor aggregate of Fig. 1 is accommodated in the capacitor device in the casing.

In Fig. 1, Fig. 2, the 1st, with existing identical, make the side edge part of electrode foil outstanding from dielectric, the capacitor sub-prime that the protuberance of electrode foil is folded to form, the 2nd, make up the assembly arranged side by side that a plurality of (illustrated example is 6) capacitor sub-prime 1 forms side by side, the 3rd, from the outstanding electrode foil (exposed division of electrode foil) of the dielectric of capacitor sub-prime 1,5～7th, the insulation stiffener that pressure plare etc. form, the 8th, containers such as casing.

Insulation stiffener in such execution mode, cross section is roughly the shape of L font, bight (this bight is made of the bight of each capacitor sub-prime) by a side that coats capacitor body 2 arranged side by side, fill in the insulation stiffener 5 of longitudinally both side ends 5a, with cover opposite side bight (ora terminalis bight diagram on) with the insulation stiffener 6 of insulation stiffener 5 with shape, and insulation stiffener 7 formations of the end face of the electrode foil 3 that exposes of covering.And the side 7a towards the electrode foil end face of insulation stiffener 7 is the male and fomale(M﹠F) of wave.In addition, insulation stiffener 7 also can be the ripple plate of two sides waveform.The insulation stiffener of Gou Chenging like this, insulation stiffener 5 and insulation stiffener 6 are embedded the bight of capacitor assembly 2 arranged side by side respectively, from its outside fixed insulation stiffener 7, make the flow direction of waveform recess (paddy portion) 7b towards dielectric fluid, the top contact insulation stiffener 5 of its protuberance (mountain portion) 7c is fixed with insulation stiffener 6.

In this wise, capacitor assembly 2 incorporate capacitor aggregates arranged side by side are accommodated in the container 8, filling insulation wet goods dielectric fluid is finished capacitor device.

In addition, the lid of container 8 is identical with well-known capacitor device with wirings such as sleeve pipe, lead, other insulation formations etc., its explanation of Therefore, omited.

More than in the capacitor device of Gou Chenging, during running, capacitor sub-prime 1 generates heat, and dielectric fluid is heated, then dielectric fluid generation convection current, and its waveform recess that is flowing in insulation stiffener 7 freely passes through.At this moment, carry out heat exchange between electrode foil 3 that capacitor sub-prime 1 exposes and dielectric fluid, the temperature of suppression capacitor sub-prime 1 rises.

In addition, the protuberance 3 of the electrode foil by folded capacitor sub-prime 1 both sides can prevent that the end is uneven, and damage etc. takes place, and capacitor sub-prime 1 can be diminished simultaneously.The folding part of the protuberance 3 of electrode foil is fixed by the insulation stiffener at this moment, so can prevent rolling of folding part in the convection current of dielectric fluid.

In addition, in the above embodiment, the insulation stiffener constitutes with 3 parts, but also can be with suitably integrated between each parts.In addition, the face of the stiffener 7 electrode foil end face sides that insulate relatively is the male and fomale(M﹠F) of wave, but being shaped as arbitrarily of male and fomale(M﹠F).And then, also can be that insulation stiffener 7 covers the electrode foil 3 ground bending of exposing both sides or one-sided end.But, note the conducting that can not hinder dielectric fluid this moment.

Claims (1)

1. capacitor device, a plurality of capacitor sub-primes are set up in parallel into capacitor and are set up in parallel body, the electrode foil side edge part exposes from its both side ends, constitute the electrode foil side that capacitor is set up in parallel body, cover the electrode foil outside of exposing with the contact of insulation stiffener, with this as the capacitor aggregate, in the be accommodated in filling container of dielectric fluid and in the capacitor device that constitutes;

It is characterized in that the protuberance of capacitor sub-prime electrode foil in the both sides of exposing is folded respectively, the face of the electrode foil that the contact of insulation stiffener is folded is a ripple plate shape.

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