CN207397951U - A kind of self healing capacitor for winding silk supplementary protection - Google Patents

Abstract

The utility model discloses a kind of self healing capacitors for winding silk supplementary protection; including capacitor case; capacitor body is provided in capacitor case; capacitor body is provided in capacitor body; two pole plates of capacitor body are connected to respectively by lead on two wire connection terminals being arranged on capacitor case; conductive winding silk is wound on capacitor body; the both ends of conduction winding silk are connected to the insulated terminal being arranged on capacitor case, are useful for judging the warning device whether conductive winding silk is broken on insulated terminal.The utility model provides auxiliary signal in capacitor faults, with prompting, warning operator, avoids fault spread.

Description

A kind of self healing capacitor for winding silk supplementary protection

Technical field

The utility model belongs to Self-healing power capacitor manufacturing field, and in particular to it is a kind of wind silk supplementary protection from More formula capacitor.

Background technology

Cylinder self healing capacitor all uses the overpressure protection device of whole, i.e. overpressure disconnector, protection mostly Capacitor lead is directly broken during device action, capacitor is made to exit performance loop, but may be because electric circuit characteristic requirement, i.e., Just capacitor damage should not also be exited from circuit, and capacitor cannot definitely be in open-circuit condition in other words, but capacitor is after all It has been damaged that, if repairing or replacing not in time, entire circuit may be made more serious failure occur, expand accident Greatly.

The characteristics of self healing capacitor is exactly with self-healing feature, that is, a small amount of small capacitance is only lost when there is electrical breakdown And recover capacitor specific characteristics.In the self healing capacitor that high square resistance metalized film is made, although the successful probability of self-healing is non- Chang Gao, but it is poor to the ability to bear by the ability to bear of electric current and itself leakage current, it may in operating circuit exception Self-temperature is caused to steeply rise and element withstanding voltage ability is made drastically to decline, self-healing is caused to fail.Capacitance when self-healing fails Device will not explode, but can melt as semiconductor form, and volume can expand, and such capacitor is not opened a way, to that cannot open The capacitor application on road is suitble to, but after all capacitor failure, it is necessary to replace as early as possible in order to avoid fault spread.

Utility model content

The purpose of this utility model is to provide a kind of self healing capacitor for winding silk supplementary protection, to solve existing skill The problem of art, the utility model provide auxiliary signal in capacitor faults, with prompting, warning operator or triggering failure Warning device is directly accessed switch control circuit by switch cutoff faulty capacitor circuit, avoids fault spread.

In order to achieve the above objectives, the utility model adopts the following technical solution：

A kind of self healing capacitor for winding silk supplementary protection, including capacitor case, electricity is provided in capacitor case Container fuse is provided with capacitor body in capacitor body, and two pole plates of capacitor body are connected to respectively by lead It is arranged on two wire connection terminals on capacitor case, conductive winding silk is wound on capacitor body, conduction winding silk Both ends are connected to the insulated terminal being arranged on capacitor case, are useful for judging whether conductive winding silk is broken on insulated terminal Warning device.

Further, the conductive winding silk is wire.

Further, the conductive winding silk is fuse.

Further, it is equipped with insulating layer on the outside of the conductive winding silk.

Further, the warning device is visual alarm or voice guard.

Further, on two wire connection terminals on capacitor case it is connected with that the switch of capacitor is turned off manually.

Compared with prior art, the utility model has technique effect beneficial below：

During the capacitor faults of the utility model, capacitor body starts to expand, when range of expansion is more than conductive winding silk Winding scope when, conduction winding silk stress disconnects, and the both ends of conduction winding silk are connected with warning device, when conduction winding silk breaks After opening, you can prompt operator on duty by warning device, failure, handling failure are found within the shortest time, avoids fault spread.

Further, insulating layer is equipped on the outside of conductive winding silk, avoids short circuit between conductive winding silk and capacitor body.

Further, on two wire connection terminals on capacitor case can be connected with that opening for capacitor is turned off manually It closes, when operator on duty receives the report for police service, switch can be disconnected.

Description of the drawings

Fig. 1 is the capacitor arrangement figure of traditional normal condition；

Fig. 2 is the capacitor arrangement figure of traditional failure；

Fig. 3 is the capacitor arrangement figure of traditional appearance serious consequence；

Fig. 4 is the capacitor arrangement figure of the utility model；

Fig. 5 is structure chart of the capacitor of the utility model in failure；

Fig. 6 is the capacitor additional circuit figure of the utility model；

Fig. 7 is the manual breaking capacitance device circuit diagram after failure prompting.

Wherein, 1, capacitor case；2nd, insulated terminal；3rd, conductive winding silk；4th, capacitor body.

Specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings：

Referring to Fig. 4 and Fig. 5, a kind of self healing capacitor for winding silk supplementary protection, including capacitor case 1, capacitor Capacitor body 4 is provided in shell 1, capacitor body, two pole plates point of capacitor body are provided in capacitor body 4 It is not connected to by lead on two wire connection terminals being arranged on capacitor case 1, is connected with and is used on two wire connection terminals The switch of capacitor is turned off manually, conductive winding silk 3 is wound on capacitor body 4, the both ends of conduction winding silk 3, which are connected to, to be set The insulated terminal 2 on capacitor case 1 is put, is useful for judging the alarm dress whether conductive winding silk 3 is broken on insulated terminal 2 It puts, wherein, conduction winding silk 3 is fuse, and the outside of conduction winding silk 3 is equipped with insulating layer, and warning device is voice guard Or visual alarm.

The operating process of the utility model is described in detail below：

The present invention provides a kind of protective device that can add installation on the capacitor element, is provided in capacitor faults auxiliary Signal is helped, with prompting, warning operator or triggering accident warning device or switch control circuit is directly accessed and is cut by switching Disconnected faulty capacitor circuit, specifically wire of the periphery winding with insulating layer in capacitor body 4, and in capacitor core Sub 4 both ends are fixed, after capacitor casing 1 drawn by insulated terminal 2, a normally closed contact is provided.In capacitor faults, electricity The damage expansion of container fuse 4, expansion can break wire, and external normally closed contact becomes form of opening a way, and be to be sent out in capacitor A contacts open signal is provided before raw catastrophe failure.

During capacitor faults, capacitor body 4 starts to expand, when range of expansion is more than the winding scope of wire, gold Belong to silk stress to disconnect, capacitor adjunct circuit open circuit, the signal of insulated terminal 2 is controlled according to circuit requirements access device circuit End, voice guard, visual alarm or device main protection unit can find failure, handling failure within the shortest time.

Fig. 6 protects wiring diagram for simple light warning, it can be seen that during capacitor faults, capacitor adjunct circuit is opened Road bypasses lights, prompts operator on duty.Fig. 7 is the manual breaking capacitance device circuit diagram after failure is reminded, and works as operator on duty When receiving the report for police service, switch can be disconnected.

Claims (6)

1. a kind of self healing capacitor for winding silk supplementary protection, which is characterized in that including capacitor case (1), outside capacitor Capacitor body (4) is provided in shell (1), capacitor body, two poles of capacitor body are provided in capacitor body (4) Plate is connected to respectively by lead on two wire connection terminals being arranged on capacitor case (1), coiling on capacitor body (4) There is conductive winding silk (3), the both ends of conduction winding silk (3) are connected to the insulated terminal (2) being arranged on capacitor case (1), It is useful for judging the warning device whether conductive winding silk (3) is broken on insulated terminal (2).

2. a kind of self healing capacitor for winding silk supplementary protection according to claim 1, which is characterized in that described leads Electricity winding silk (3) is wire.

3. a kind of self healing capacitor for winding silk supplementary protection according to claim 2, which is characterized in that described leads Electricity winding silk (3) is fuse.

4. a kind of self healing capacitor for winding silk supplementary protection according to claim 3, which is characterized in that described leads Insulating layer is equipped on the outside of electricity winding silk (3).

A kind of 5. self healing capacitor for winding silk supplementary protection according to claim 1, which is characterized in that the report Alarm device is visual alarm or voice guard.

6. a kind of self healing capacitor for winding silk supplementary protection according to claim 1, which is characterized in that outside capacitor It is connected with that the switch of capacitor is turned off manually on two wire connection terminals on shell (1).