CN202696162U

CN202696162U - Capacitance compensation regulating switch

Info

Publication number: CN202696162U
Application number: CN201220314925XU
Authority: CN
Inventors: 高岩; 何大荣; 黄在先
Original assignee: Shanghai Safeier Intelligent Electrical Appliance Co Ltd; SHANGHAI FIRST ELECTRICAL GROUP CO Ltd
Current assignee: Shanghai Safeier Intelligent Electrical Appliance Co Ltd; SHANGHAI FIRST ELECTRICAL GROUP CO Ltd
Priority date: 2012-06-29
Filing date: 2012-06-29
Publication date: 2013-01-23
Anticipated expiration: 2022-06-29

Abstract

The utility model discloses a capacitance compensation regulating switch which comprises a cooling fin, a plurality of silicon controlled modules, a plurality of temperature control switches, a axial flow fan, connection terminals and a control circuit board, wherein the silicon controlled modules are mounted on the cooling fin side by side, the temperature control switches are evenly mounted between the silicon controlled modules in an intersecting mode, the connection terminals are mounted at the upper end and the lower end of the cooling fin, the axial flow fan is mounted on the rear side of the cooling fin, and two electrodes of each silicon controlled module are connected with the connection terminals through wires,. The control circuit board comprises a signal input end and a signal output end, and a trigger lead of each silicon controlled module, leads of the temperature control switches, a lead of the axial flow fan are respectively connected with the signal output end of the control circuit board through wires. The capacitance compensation regulating switch can switch a capacitor in an arc-free, noiseless, frequent and rapid mode, at the same time has the functions of automatic temperature measurement air exhaust heat dissipation and overtemperature automatic blocking protection, and is compact and simple in structure.

Description

A kind of capacitance compensation by-pass cock

Technical field

The utility model relates to a kind of capacitor contactor, is specifically related to a kind of high power contactless capacitor switching switch.

Background technology

The fling-cut switch that tradition is used for reactive compensation switching capacitor group mostly is capacitor switching contactor, it by common contactor with moving close first contact, the current-limiting resistance silk forms, when dropping into capacitor, moving first make contact is closed prior to main contacts, capacitor is by resistance wire, moving first make contact place in circuit, and main contacts is closed immediately, will move first make contact and resistance wire bypass, directly with the capacitor place in circuit.This process by moving first make contact existing with the pre-place in circuit of capacitor series resistance silk then at direct place in circuit, drop into the inrush phenomenon that is with the limiting capacitance device.

Even so, but inrush phenomenon is still larger, ablation contact and resistance wire, and the response time is long, and the switching number of operations is restricted in the unit interval, can not satisfy needs frequent, the quick-switching occasion.

The utility model content

The utility model is in order to solve the existing problem of existing capacitor switching contactor, and a kind of capacitance compensation by-pass cock is provided.This switch can not only suppress inrush phenomenon, contactless ablation and can satisfy the fast needs of response of frequent switching by switched capacitor.

In order to achieve the above object, the technical scheme taked of the utility model is as follows:

A kind of capacitance compensation by-pass cock, described by-pass cock comprises fin, a plurality of silicon controlled modules, a plurality of temperature detect switch (TDS)s, axial flow blower, binding post and control circuit board, described silicon controlled module is installed on the fin side by side, described temperature detect switch (TDS) on average is staggered installation of between silicon controlled module, described binding post is installed in up and down two ends of fin, described axial flow blower is installed in the fin back side, the two-stage of described silicon controlled module is connected with binding post by wire, comprise signal input part and signal output part on the described control circuit board, triggering lead-in wire and the temperature detect switch (TDS) of described silicon controlled module, the lead-in wire of axial flow blower is connected with the signal output part of control circuit board with wire respectively.

Further, described silicon controlled module is the bidirectional triode thyristor module.

Further, described wire is insulated conductor.

The utility model compact conformation is simple, using the time spent, without electric arc, noiselessness, and can be frequently, switched capacitor fast.

In addition, also has simultaneously the function that automatic temperature-adjusting detects air discharging and radiating, the protection of overtemperature automatic blocking.

Description of drawings

Further specify the utility model below in conjunction with the drawings and specific embodiments.

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model end view;

Fig. 3 is the utility model rearview;

Fig. 4 is the utility model vertical view;

Fig. 5 is the utility model circuit theory diagrams.

Embodiment

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

Referring to Fig. 1, a kind of capacitance compensation by-pass cock of the utility model comprises several bidirectional triode thyristor modules ST, fin 2, axial flow blower 3, binding post 4, controlable electric current plate 5 and some temperature switches.

Fin 2 is mainly used in heat radiation and fixing, it can adopt aluminum alloy heat sink, its effect is that the heat conduction that double silicon control module ST dissipates is dissipated, and plays simultaneously installing and fixing bidirectional triode thyristor module ST, temperature switch, binding post 4 and shell, axial flow blower 3.

Bidirectional triode thyristor module ST in this example, adopt three bidirectional triode thyristor module ST, but its quantity is not limited to this as main power component in the switch.Three bidirectional triode thyristor module ST are by installing side by side on the fin 2 with bolt.

Adopt four temperature switch T1, T2, T3, T4 at the utility model, these four temperature switches divide two groups to be staggered installation of between three silicon controlled modules, wherein TI, T2 are overtemperature locking temperature switch, it is fin overtemperature detecting element, T3, T4 are the wind-cooling heat dissipating temperature switch, are air blast cooling start and stop detector units.

Referring to Fig. 3, axial flow blower 3 is installed on fin 2 back sides, and its effect is that fin is carried out the forced convertion wind-cooling heat dissipating.

Referring to Fig. 1 and 2, binding post 4 is installed in the two disconnected up and down of fin 2, and its effect is that silicon controlled module ST terminals are drawn, and conveniently is connected with external circuit.Wherein three bidirectional triode thyristor module ST the two poles of the earth are connected to respectively on the binding post at two ends with insulated conductor.

As shown in Figure 2, control circuit board 5 effects are to receive working power, control signal, temperature signal and send triggering signal, blower fan signal.It specifically is placed on the face shield 1 as switch housing, and control circuit board 5 comprises the input of introducing control signal and the output of output signal.The external main control system of the input of control circuit board 5, its output by insulated conductor and controllable silicon trigger lead-in wire and temperature detect switch (TDS), axial flow fan lead joins.

Referring to Fig. 4, face shield 1, its effect is installing and fixing of the internally charged body of isolation, protection internal components and control circuit board 5.

Based on such scheme, implementation of the present utility model following (referring to Fig. 5):

During use switch two rows main terminal is accessed the capacitor major loop by input, output, shell upper end control terminal is cut-in operation power supply and control signal respectively, trigger wiring board and receive when detecting silicon controlled module ST zero crossing after the control signal and trigger bidirectional triode thyristor module ST conducting, capacitor is dropped into circuit.

Along with circuit is connected, the silicon controlled module ST heating that dissipates, fin 2 temperature raise, when temperature reach temperature detect switch (TDS) T3 after the nominal temperature of T4, temperature switch T3 closed axial flow blower 3 circuit of connecting of T4, axial flow blower 3 is worked and is carried out air blast cooling and dispel the heat.

Fin 2 temperature be lower than temperature detect switch (TDS) T3 after the nominal temperature of T4, temperature switch T3 T4 disconnect, axial flow blower 3 quits work.

When damaging, fault or axial flow blower 3 cause heating panel 2 temperature to continue to raise; when temperature reach temperature detect switch (TDS) T1 after the nominal temperature of T2; temperature switch T1 T2 disconnect; locking wiring board control signal; switch is disconnected; capacitor loops quits work, and has reached the purpose of protection switch and line security

More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. capacitance compensation by-pass cock, it is characterized in that, described by-pass cock comprises fin, a plurality of silicon controlled modules, a plurality of temperature detect switch (TDS)s, axial flow blower, binding post and control circuit board, described silicon controlled module is installed on the fin side by side, described temperature detect switch (TDS) on average is staggered installation of between silicon controlled module, described binding post is installed in up and down two ends of fin, described axial flow blower is installed in the fin back side, the two-stage of described silicon controlled module is connected with binding post by wire, comprise signal input part and signal output part on the described control circuit board, triggering lead-in wire and the temperature detect switch (TDS) of described silicon controlled module, the lead-in wire of axial flow blower is connected with the signal output part of control circuit board with wire respectively.

2. a kind of capacitance compensation by-pass cock according to claim 1 is characterized in that, described silicon controlled module is the bidirectional triode thyristor module.

3. a kind of capacitance compensation by-pass cock according to claim 1 is characterized in that, described wire is insulated conductor.