CN201226326Y - Electronic electromagnetic control apparatus for high voltage vacuum contactor - Google Patents

Abstract

The utility model discloses an electronic electromagnetic control device of a high-voltage vacuum contactor, belonging to the control technology of a high-voltage vacuum contactor. The utility model is characterized by comprising a power supply part, an electromagnetic part and a detection part, wherein, the power supply part mainly comprises a rectifier bridge QL1, two varistors RV1 and RV2 and two capacitors C1 and C2; the two varistors RV1 and RV2 are connected in parallel with the DC end of the rectifier bridge QL1; the electromagnetic part is connected with the output end of the power supply part; both of two windings are formed by an attracting coil and a holding ring; after the attracting coil and the holding ring for two windings are internally connected in series, the series-connection points are respectively connected with the two ends of the capacitors C1 and C2; the B2 ends of two windings are in short-connection; the detection part mainly consists of an auxiliary relay J1.1 and an proximity switch K1, wherein, the normally closed contacts 71-72 and 81-82 of the auxiliary relay J1.1 are connected in parallel with the two ends of the capacitors C1 and C2; two windings and the proximity switch K1 are installed in the contactor; other parts are separated from the contactor; and long-distance control can be realized upon the contactor through the terminal connection.

Description

The electronic type electromagnetic control apparatus of high-pressure vacuum contactor

Technical field

The utility model belongs to the high-pressure vacuum contactor control technology, mainly proposes a kind of electronic type electromagnetic control apparatus of high-pressure vacuum contactor.

Background technology

At present, known high-pressure vacuum contactor is made up of framework, insulating part, vacuum tube, armature, the coil of wire, rectifying device, auxiliary contact etc.Coil of wire energising contactor main contacts closure, coil of wire outage contactor main contacts cut-offs, and reaches the purpose with low tension control high-tension electricity break-make.But general high-pressure vacuum contactor failure rate height, average life in the process of frequent movement is short, mainly occurs 1) coil of wire is because of often being burnt out by big electric current for a long time; 2) rectifying device is not damaged by over-voltage breakdown because of there being overvoltage protection; 3) testing agency of contactor adhesive and release condition is because be that the mechanical collision formula is often broken; The electric arc that direct current was produced when 4) auxiliary contact were often cut-off because of there not being the extinguishing arc measure destroys; 5) all discrete control devices distributions are fixed in the framework of contactor, crowded to capacity, maintenance inconvenience; 6) the unreasonable and fault of electromagnetic mechanism frequently directly influences the useful life of vacuum tube and even high-pressure vacuum contactor complete machine.

Summary of the invention

The purpose of this utility model promptly is the electronic type electromagnetic control apparatus that proposes a kind of high-pressure vacuum contactor, make it have characteristics rational in infrastructure, good electric property, thereby reduce the failure rate of vacuum contactor, prolong its useful life and realization far distance controlled high-pressure vacuum contactor.

The utility model takes following technical scheme to finish its invention task: a kind of electronic type electromagnetic control apparatus of high-pressure vacuum contactor mainly includes power unit, electromagnet portion and test section; The electronic module AP1 of power unit for mainly being made up of rectifier bridge QL1, piezo-resistance RV1, RV2 and capacitor C 1, C2 of enough capacity DC power supply is provided for control device, and wherein piezo-resistance RV1, RV2 are attempted by the dc terminal of rectifier bridge QL1; DC power supply is converted into magnetic signal, control vacuum contactor closure, the electromagnet portion that discharges is mainly by the 1# coil of wire, the 2# coil of wire is formed and with the 1# coil of wire, the 2# coil of wire is connected with the output of power unit rectifier bridge QL1, the 1# coil of wire and the 2# coil of wire constitute by pull-in winding and hold-in winding, the pull-in winding A11-AB11 of the 1# coil of wire is connected to capacitor C 1 with the inner pull-in winding A21-AB21 that is connected in series its serial connection point AB11 and the 2# coil of wire of hold-in winding AB11-B2 with the inner serial connection point AB21 that is connected in series of hold-in winding AB21-B2, the C2 two ends, the B2 end short circuit of the B2 end of the 1# coil of wire and the 2# coil of wire; The test section is mainly formed by auxiliary relay J1.1 with near K switch 1, and wherein, the coil of auxiliary relay J1.1 constitutes the detection loop that adhesive and release condition to contactor detect with connecting near K switch 1; Normally-closed contact 71-72, the 81-82 of auxiliary relay J1.1 also receives capacitor C 1, C2 two ends.

The 1# coil of wire and the 2# coil of wire reach and are installed in the high-pressure vacuum contactor body near K switch 1, the other parts of control device and high-pressure vacuum contactor split are provided with, the rectifier bridge QL1 of power unit is connected by terminal X12:2, X12:6 with the 1# coil of wire, the 2# coil of wire, be connected with the 220V AC power by terminal X11:3 and be connected near K switch 1, realize the far distance controlled of control device high-pressure vacuum contactor with the coil of the auxiliary relay J1.1 that connects the 220V AC power.

The course of work of control device that the utility model proposes is: when power unit is that electronic module AP1 input obtains the AC220V power supply, after rectifier bridge QL1 rectification, give the 1# coil of wire, the 2# coil of wire provides 220V direct current, at this moment contactor is in release condition, be in open-circuit condition near K switch 1, auxiliary relay J1.1 is in release condition, its normally-closed contact 71-72 and 81-82 closure, with hold-in winding AB21-B2 short circuit in the hold-in winding AB11-B2 in the 1# coil of wire and the 2# coil of wire, at this moment the electromagnetic circuit that powerful electric current is constituted by pull-in winding A21-AB21 in the pull-in winding A11-AB11 in the 1# coil of wire and the 2# coil of wire, powerful electric current is changed into magnetic field, and the armature movement in the contactor makes the main contacts closure of high-pressure vacuum contactor; Closed moment is near K switch 1 closure, closed its normally-closed contact of auxiliary relay J1.1 disconnects, automatically the hold-in winding in the 1# coil of wire and the 2# coil of wire is sealed in electromagnetic circuit, capacitor C 1, C2 begin charging process, like this, when the hold-in winding electric current rises, pull-in winding is descended by electric current, and after capacitor C 1, C2 charging transient process were finished, the electric current of the 1# coil of wire and the 2# coil of wire all maintained certain value, make contactor be in reliable attracting state, reduce the heating of the coil of wire.When the input dead electricity of electronic module, the 1# coil of wire, the 2# coil of wire and auxiliary relay J1.1 dead electricity, contactor disconnects under the spring action of contactor.

In the utility model the difference of the multi-thread coil structures of electromagnet portion and different operating state electromagnetic circuit constitute can be on the basis that guarantees the reliable adhesive of contactor reasonable distribution attract current and keep electric current, reduce the heating of coil; Before electromagnetic circuit and the piezo-resistance RV1, the RV2 that connect setting can absorb come from the overvoltage of controlling power supply and electromagnetic circuit at make and break process because the overvoltage that big inductance is produced; Capacitor C 1, C2 in the electronic module between two coil of wire pull-in windings, the inner serial connection point of hold-in winding can carry out extinguishing arc in auxiliary relay normally-closed contact disconnection process, time-lag action of its charging transient process can make two pull-in windings by powerful electric current and have time enough, guarantee that the contactor adhesive is clear-cut, in the process of contactor adhesive, play filter action simultaneously.

Characteristics rational in infrastructure, good electric property that the electronic type electromagnetic control apparatus of the high-pressure vacuum contactor that the utility model proposes has can reduce the failure rate of vacuum contactor, prolong its useful life and realize far distance controlled to high-pressure vacuum contactor.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

In conjunction with the accompanying drawings the utility model embodiment is illustrated:

As shown in Figure 1, the utility model control device is made up of power unit, electromagnet portion and test section; Electronic module AP1 provides the DC power supply of enough capacity and issuable overvoltage of electromagnetic circuit and electric arc is absorbed protection for the utility model control device, be power unit, form by rectifier bridge QL1, piezo-resistance RV1, RV2 and capacitor C 1, C2 and terminal X11, X12; Piezo-resistance RV1, RV2 are connected to the dc terminal of rectifier bridge QL1, be used for absorbing come from the overvoltage of controlling power supply and electromagnetic circuit at make and break process because the overvoltage that big inductance is produced.Electromagnet portion is made up of the 1# coil of wire and the 2# coil of wire, its effect is that direct current is converted into magnetic signal, the adhesive of control contactor and release under the effect of armature in contactor, rectifier bridge QL1 becomes the 220V direct current with the 220V AC rectification, from the terminal X12:2-X12:6 output of AP1, be connected to the A11 end of the 1# coil of wire and the A21 end of the 2# coil of wire respectively; Electromagnet portion specifically is made up of pull-in winding A21-AB21 and hold-in winding AB21-B2 in pull-in winding A11-AB11 in the 1# coil of wire and hold-in winding AB11-B2, the 2# coil of wire, and multi-thread coil structures is for reasonable distribution attract current on the basis of the reliable adhesive of contactor and keeps electric current.The point AB21 of two coils of the 1# coil of wire after the serial connection of inside is connected to the terminal X11:8 of electronic module AP1, the point AB11 of two coils of the 2# coil of wire after the inner serial connection of the coil of wire is connected to the terminal X12:8 of electronic module AP1, is serially connected with capacitor C 1 and C2 by terminal X11:8, X12:8.Auxiliary relay J1.1 and play the effect that adhesive and release condition to contactor detect near K switch 1, the auxiliary contact of J1.1 participate in the locking and the control of electrical system simultaneously, are the test section; Pass through terminal X11:9 after the normally-closed contact 71-72 of auxiliary relay J1.1 and the 81-82 parallel connection, X12:9 also is connected to capacitor C 1, (terminal X11:8 and X11:9 are at the inner short circuit of electronic module AP1 at the C2 two ends, X12:8 and X12:9 are at the inner short circuit of electronic module AP1), the coil of auxiliary relay J1.1 detects the loop with the formation of connecting near K switch 1, in Fig. 1, for the test section, by interconnector among the electronic module AP1 220V alternating current is guided to terminal X11:3-X11:7, provide power supply for detecting the loop, end (wire size is L) near switch is connected on the terminal X11:3 of modules A P1, the other end (wire size is A3) links to each other with an end of relay J 1.1 coils, and the terminal X11:7 that the other end of relay J 1.1 coils is linked modules A P1 goes up and form the detection loop.Other auxiliary contact of auxiliary relay J1.1 (13-14,23-24,33-34,51-52,61-62) can be used as other linkage lock and control as the auxiliary contact of contactor.Get when electric in electromagnet portion, form electromagnetic circuit by pull-in winding A11-AB11 and A21-AB21, hold-in winding AB11-B2 and AB21-B2 are by the normally-closed contact short circuit of auxiliary relay J1.1, powerful electric current only produces strong suction by pull-in winding A11-AB11 and A21-AB21, when the armature motion of contactor to soon closed position, detected near K switch 1, at this moment, K1 connects, the normally-closed contact of J1.1 disconnects, capacitor C 1, C2 begins charging, hold-in winding AB11-B2 and AB21-B2 seal in electromagnetic circuit, make pull-in winding continue keeping big electric current, electric current by hold-in winding AB11-B2 and AB21-B2 guarantees that contactor reliable adhesive and action in the process of pull-in winding and hold-in winding relay energising are clear-cut from small to large simultaneously.

Claims (2)

1, a kind of electronic type electromagnetic control apparatus of high-pressure vacuum contactor is characterized in that: mainly include power unit, electromagnet portion and test section; The electronic module AP1 of power unit for mainly being made up of rectifier bridge QL1, piezo-resistance RV1, RV2 and capacitor C 1, C2 of enough capacity DC power supply is provided for control device, and wherein piezo-resistance RV1, RV2 are attempted by the dc terminal of rectifier bridge QL1; DC power supply is converted into magnetic signal; The electromagnet portion of control vacuum contactor closure, release mainly is made up of the 1# coil of wire, the 2# coil of wire and the 1# coil of wire, the 2# coil of wire is connected with the output of power unit rectifier bridge QL1, the 1# coil of wire and the 2# coil of wire constitute by pull-in winding and hold-in winding, the pull-in winding A11-AB11 of the 1# coil of wire is connected to capacitor C 1, C2 two ends with the inner serial connection point AB21 that is connected in series of hold-in winding AB21-B2, the B2 end short circuit of the B2 end of the 1# coil of wire and the 2# coil of wire with the inner pull-in winding A21-AB21 that is connected in series its serial connection point AB11 and the 2# coil of wire of hold-in winding AB11-B2; The test section is mainly formed by auxiliary relay J1.1 with near K switch 1, and wherein, the coil of auxiliary relay J1.1 constitutes the detection loop that adhesive and release condition to contactor detect with connecting near K switch 1; Normally-closed contact 71-72, the 81-82 of auxiliary relay J1.1 also receives capacitor C 1, C2 two ends.

2, the electronic type electromagnetic control apparatus of high-pressure vacuum contactor according to claim 1, it is characterized in that: the 1# coil of wire and the 2# coil of wire reach and are installed in the high-pressure vacuum contactor body near K switch 1, and the other parts of control device and high-pressure vacuum contactor split are provided with; The rectifier bridge QL1 of power unit is connected by terminal X12:2, X12:6 with the 1# coil of wire, the 2# coil of wire, is connected with the 220V AC power by terminal X11:3 and is connected with the coil of the auxiliary relay J1.1 that connects the 220V AC power near K switch 1.