CN205249092U - High -voltage motor start control device - Google Patents
High -voltage motor start control device Download PDFInfo
- Publication number
- CN205249092U CN205249092U CN201521054100.9U CN201521054100U CN205249092U CN 205249092 U CN205249092 U CN 205249092U CN 201521054100 U CN201521054100 U CN 201521054100U CN 205249092 U CN205249092 U CN 205249092U
- Authority
- CN
- China
- Prior art keywords
- vacuum contactor
- normally
- solenoid
- reactor
- branch road
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Motor And Converter Starters (AREA)
Abstract
The utility model relates to a high -voltage motor start control device, include: first branch road, second branch road, third branch road and major loop, main contacts and reactor polyphone is normally opened by a vacuum contactor's to the major loop, and the high -voltage motor is connected to the other end of reactor, and drive power supply is connected to a vacuum contactor's the other end of normally opening the main contacts, and the 2nd vacuum contactor's the main contacts cross -over connection of normally opening is in a vacuum contactor's the both ends of normally opening main contacts and reactor polyphone branch road, when starting the high -voltage motor, a vacuum contactor actuation, the high -voltage motor begins to start, make the 2nd vacuum contactor actuation, the reactor is by the short circuit, the 2nd vacuum contactor's normally closed contact disconnection, result in vacuum contactor release, reactor and power supply disconnection, thorough stop work behind messenger's reactor completion voltage -reduction starting, burning out of reactor has been avoided, the reliability service of the equipment that has ensured, and improves the production efficiency, reducing production cost, the safety in production has been promoted.
Description
Technical field
The utility model belongs to mine excavation electrical control field, relates in particular to power shovel unitMain electric motor starting control.
Background technology
At present, the excavating equipment of surface mining mostly adopts direct current generator to drive, direct currentMachine provides driving power by DC generation unit, and what provide power for dc generator is highPress threephase asynchronous (hereinafter to be referred as high-voltage motor), high-voltage motor is to adopt reactanceThe mode of device step-down starts, and starts control device and generally includes major loop, theOne branch road, the second branch road, the 3rd branch road, described the first branch road, the second branch road, the 3rdBranch road is attempted by the both positive and negative polarity of controlling power supply, and major loop is normal by the first vacuum contactorOpen main contacts and reactor series winding, the other end of reactor connects high-voltage motor, and first is trueThe other end of often opening main contacts of empty contactor connects driving power, the second vacuum contactorThe two ends of often opening main contacts and be connected across reactor.
While starting high-voltage motor, press start button, the first vacuum contactor adhesive, heightMedium-voltage Motor starts, and in the time that electric motor starting finishes, the second vacuum contactor adhesive, causes theTwo vacuum contactors are often opened main contacts closure, make reactor by short circuit, and high-voltage motor entersRun well.
There are some drawbacks in this startup control device above, reactor often occurs and burnSituation, tracing it to its cause is that fluctuation due to mine electric power supply voltage is larger, causes and controls dressNormally adhesive of the vacuum contactor of putting, makes to be attempted by the normally closed master at reactor two endsContact can not normally closed, and reactor is not by short circuit, and reactor is connected in master for a long timeIn loop, cause reactor internal temperature to raise, cause being burnt, this fault is directAffect the normal production in mine, meanwhile, the process of changing reactor is extremely loaded down with trivial details, spare partCost higher, cause the waste of resource.
Utility model content
The defect existing in order to overcome prior art, the utility model provides a kind of high-tension electricityMachine starts control device, realizes reduced-voltage starting and finishes rear automatic disconnection reactor, thereby keep awayExempt from burning of reactor, the utility model comprises: the first branch road, the second branch road, the 3rdBranch road and major loop.
The solenoid of described first route the first vacuum contactor, the second vacuum contactThe normally-closed contact of the normally-closed contact of device, start button, stop button, electrothermal relay successivelyBe connected in series, the second normally opened contact of the first vacuum contactor is attempted by two of start buttonEnd, the other end of thermal relay normally closed contact connects the positive pole of controlling power supply, the first vacuumThe other end of the solenoid of contactor connects the negative pole of controlling power supply;
The solenoid of described second route the first auxiliary reclay, the first vacuum contactThe 3rd normally opened contact of device is connected in series, the 3rd normally opened contact of the first vacuum contactorThe other end is connected on the node between stop button and start button, the first middle relayThe other end of the solenoid of device connects the negative pole of controlling power supply;
The solenoid of described the 3rd route the second vacuum contactor, electric current relayThe normally opened contact of normally-closed contact, the first auxiliary reclay is contacted mutually, the first auxiliary reclayThe other end of normally opened contact be connected on the node between stop button and start button,The other end of the solenoid of the second vacuum contactor connects the negative pole of controlling power supply, electric currentThe two ends of the normally-closed contact of relay also connect the 3rd normally opened contact of the second vacuum contactor,The two ends of the solenoid of the second vacuum contactor also connect indicator lamp;
The solenoid of described the first auxiliary reclay and described the first vacuum contactorOn node between three normally opened contacts, connect wire, the other end of wire is connected to electric current and continuesOn node between the normally opened contact of the normally-closed contact of electrical equipment and the first auxiliary reclay;
Described major loop by the first vacuum contactor often open main contacts and reactor is contacted,The other end of reactor connects high-voltage motor, the first vacuum contactor often open main contactsThe other end connects driving power, and the main contacts of often opening of described the second vacuum contactor is connected acrossThe two ends of often opening main contacts and reactor series winding branch road of described the first vacuum contactor.
In the time starting high-voltage motor, press start button, the first vacuum contactor adhesive,Make with the first vacuum contactor of reactor series winding often drive main contacts closure, high-voltage motorStart to start at this moment the first auxiliary reclay adhesive, the first auxiliary reclay normally opened contactClosure make the second vacuum contactor adhesive, the second vacuum contactor often open main contactsClosure, reactor is by short circuit, and due to the adhesive of the second vacuum contactor, the second vacuum connectsThe normally-closed contact of tentaculum disconnects, and causes the first vacuum contactor to discharge, reactor and power supplyDisconnect, thoroughly quit work after making reactor complete reduced-voltage starting, avoided reactorBurn.
As further improvement of the utility model, in described control device, install oneThe time relay and the second auxiliary reclay, the normally-closed contact of described the second auxiliary reclayBe connected between the normally-closed contact and start button of described the second vacuum contactor; When describedBetween one end of solenoid of relay be connected to the normally closed of described the second auxiliary reclayOn node between contact and start button, the other end of the solenoid of the time relayConnect the negative pole of controlling power supply; The solenoid of described the second auxiliary reclay and when describedBetween be attempted by described time relay solenoid after the normally opened contact series winding of relayTwo ends.
After high-voltage motor has started, due to the adhesive of the time relay, time relayThe closure of device normally opened contact causes the second auxiliary reclay adhesive, the second auxiliary reclayNormally-closed contact disconnects, and the first vacuum contactor is discharged, and reactor and power supply depart from,This has just further ensured to make reactor thoroughly depart from power supply after high-voltage motor starts.
Compared with prior art, the utility model is novel, and circuit structure is simple, closeReason, is used reliably, can carry out normal reduced-voltage starting to high-voltage motor, can have againEffect prevent burning of reactor, ensured the reliability service of equipment, improved and produced effectRate, has reduced production cost, has promoted safety in production.
Brief description of the drawings
Fig. 1 is prior art mesohigh motor starting device circuit diagram;
Fig. 2 is the utility model the first embodiment circuit diagram;
Fig. 3 is the utility model the second embodiment circuit diagram.
Detailed description of the invention
The improvement of having done with respect to prior art in order to understand better the utility model,Before two kinds of detailed description of the invention of the utility model are elaborated, first to backgroundThe prior art that technology part is mentioned is illustrated by reference to the accompanying drawings.
As shown in Figure 1, existing startup control device comprises: the first branch road, the second branch road,The 3rd branch road and major loop.
The solenoid of described first route the first vacuum contactor KV1, the second vacuumThe normally-closed contact KV2 of contactor KV2 ?2, start button SB3; SB4, stop buttonSB1; The normally-closed contact F14 of SB2, electrothermal relay is connected in series successively, and the first vacuum connectsThe normally opened contact KV1 of tentaculum KV1 ?one end of 2 be connected to start button SB3; SB4 andStop button SB1; On node between SB2, normally opened contact KV1 ?2 the other end connectBe connected on the solenoid of the first vacuum contactor KV1 and the second vacuum contactor KV2Normally-closed contact KV2 ?on node between 2;
The solenoid of described second route the first auxiliary reclay K11, the first vacuumThe normally opened contact KV1 of contactor KV1 ?3 be connected in series;
The solenoid of described the 3rd route the second vacuum contactor KV2, electric current relayThe normally-closed contact of device K0, the normally opened contact of the first auxiliary reclay K11 are contacted mutually, electricityThe two ends of the normally-closed contact of current relay K0 also connect often opening of the second vacuum contactor KV2Contact KV2 ?3, the second vacuum contactor KV2 solenoid two ends and connect indicator lampD；
The two ends of described the first branch road, the second branch road, the 3rd branch road are Access Control electricity respectivelyThe positive pole in source and negative pole;
Described major loop by the first vacuum contactor KV1 often open main contacts KV1 ?1 with electricityAnti-device L series winding, the other end of reactor L connects high-voltage motor M, the first vacuum contactDevice KV1 often open main contacts KV1 ?1 the other end connect driving power, the second vacuum connectsTentaculum KV2 often open main contacts KV2 ?1 two ends that are connected across reactor.
High-voltage motor start time, often open main contacts KV1 ?1 closure, electric current passes through reactorL flows to high-voltage motor M, start finish after, often open main contacts KV2 ?1 closure, willReactor L short circuit, high-voltage motor M enters normal operation, but due to reactor L nowStill in electriferous state, can consume electric energy and even heating, when often open main contacts KV2 ?1When loose contact, more can cause burning of reactor L.
The utility model easily burns for reactor in prior art and makesImprove, below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 2, the utility model high-voltage motor startup control device comprises: firstBranch road, the second branch road, the 3rd branch road and major loop.
The solenoid of described first route the first vacuum contactor KV1, the second vacuumThe normally-closed contact KV2 of contactor KV2 ?2, start button SB3; SB4, stop buttonSB1; The normally-closed contact F14 of SB2, electrothermal relay is connected in series successively, and described startup is pressedButton SB3; The two ends of SB4 also and connect the first vacuum contactor KV1 normally opened contact KV1 ?2,The other end of thermal relay normally closed contact F14 connects the positive pole of controlling power supply, the first vacuumThe other end of the solenoid of contactor KV1 connects the negative pole of controlling power supply;
The solenoid of described second route the first auxiliary reclay K11, the first vacuumThe normally opened contact KV1 of contactor KV1 ?3 be connected in series, the first vacuum contactor KV1Normally opened contact KV1 ?3 the other end be connected to stop button SB1; SB2 and start buttonSB3; On node between SB4, the solenoid of the first auxiliary reclay K11 anotherOne end connects the negative pole of controlling power supply;
The solenoid of described the 3rd route the second vacuum contactor KV2, electric current relayThe normally-closed contact of device K0, the normally opened contact of the first auxiliary reclay K11 are contacted mutually, instituteThe other end of stating the normally opened contact of the first auxiliary reclay (K11) is connected to stop buttonSB1; SB2 and start button (SB3; SB4) on the node between, the second vacuum contactThe other end of the solenoid of device KV2 connects the negative pole of controlling power supply, electric current relayThe two ends of the normally-closed contact of K0 also connect the normally opened contact of the second vacuum contactor KV2KV2 ?3, the second vacuum contactor KV2 solenoid two ends and connect indicator lamp D;
The solenoid of described the first auxiliary reclay K11 and described the first vacuum contactThe normally opened contact KV1 of device KV1 ?connect wire, the other end of wire on node between 3Be connected to the normally-closed contact of electric current relay K0 and often opening of the first auxiliary reclay K11On node between contact;
Described major loop by the first vacuum contactor KV1 often open main contacts KV1 ?1 with electricityAnti-device L series winding, the other end of reactor L connects high-voltage motor M, the first vacuum contactDevice KV1 often open main contacts KV1 ?1 the other end connect driving power, described second trueEmpty contactor KV2 often open main contacts KV2 ?1 be connected across described the first vacuum contactorKV1 often open main contacts KV1 ?1 with the two ends of reactor L series winding branch road.
In the time starting high-voltage motor M, press start button SB3; SB4, the first vacuumContactor KV1 adhesive, make with the first vacuum contactor of reactor L series winding often open masterContact KV ?1 closure, high-voltage motor M start, along with the rising of high-voltage motor M rotating speed,Starting current reduces, and is at this moment arranged on current transformer in major loop and pays the electric current relay on limitDevice K0 discharges, and the normally-closed contact closure of electric current relay K0, due to the first middle relayThe adhesive of device K11, causes the first auxiliary reclay K11 normally opened contact closure, makesTwo vacuum contactor KV2 adhesives, the second vacuum contactor often open main contacts KV2 ?1 closeClose, reactor L is by short circuit, and due to the adhesive of the second vacuum contactor KV2, second is trueThe normally-closed contact KV2 of empty contactor ?2 disconnect, cause the first vacuum contactor KV1 to discharge,Reactor L and power supply disconnect, and thoroughly depart from power supply after making reactor L complete reduced-voltage starting,Avoid burning of reactor L.
As further improvement of the utility model, as shown in Figure 3, at described control dressPut time relay KT of middle installation and the second auxiliary reclay K10, described secondThe normally-closed contact of auxiliary reclay K10 is connected in the normal of described the second vacuum contactor KV2Closed contact KV2 ?2 and start button SB3; Between SB4; Described time relay KT'sThe normally-closed contact that one end of solenoid is connected to described the second auxiliary reclay K10 withStart button SB3; On node between SB4, the solenoid of time relay KTThe other end connects the negative pole of controlling power supply; The electromagnetic wire of described the second auxiliary reclay K10Circle is attempted by described time relay after contacting with the normally opened contact of described time relay KTThe two ends of device KT solenoid.
After high-voltage motor M has started, due to the adhesive of time relay KT, timeBetween the closure of relay K T normally opened contact cause the second auxiliary reclay K10 adhesive,The normally-closed contact of two auxiliary reclay K10 disconnects, and makes the first vacuum contactor KV1Discharge, reactor L and power supply depart from, and this has just further ensured at high-voltage motor MAfter startup, make reactor L thoroughly depart from power supply.
Compared with prior art, the utility model is novel, and circuit structure is simple, closeReason, is used reliably, can carry out normal reduced-voltage starting to high-voltage motor, can have againEffect prevent burning of reactor, ensured the reliability service of equipment, improved and produced effectRate, has reduced production cost, has promoted safety in production.
Claims (2)
1. high-voltage motor starts a control device, comprising: the first branch road, the second branch road,The 3rd branch road and major loop,
The solenoid, second of described first route the first vacuum contactor (KV1)The normally-closed contact of vacuum contactor (KV2) (KV2 ?2), start button (SB3; SB4),Stop button (SB1; SB2), the normally-closed contact of electrothermal relay (F14) contact successively andBecome, the other end of thermal relay normally closed contact (F14) connects the positive pole of controlling power supply,The other end of the solenoid of the first vacuum contactor (KV1) connects controls the negative of power supplyThe utmost point;
The solenoid, first of described second route the first auxiliary reclay (K11)The normally opened contact of vacuum contactor (KV1) (KV1 ?3) is connected in series, and continues in the middle of firstThe other end of the solenoid of electrical equipment (K11) connects the negative pole of controlling power supply;
Solenoid, the electric current of described the 3rd route the second vacuum contactor (KV2)The normally-closed contact of relay (K0), the normally opened contact of the first auxiliary reclay (K11)Series winding mutually, the other end of the solenoid of the second vacuum contactor (KV2) connects to be controlledThe negative pole of power supply, the two ends of the normally-closed contact of electric current relay (K0) also connect the second vacuumThe normally opened contact of contactor (KV2) (KV2 ?3), the second vacuum contactor (KV2)The two ends of solenoid also connect indicator lamp (D);
Described major loop is often opened main contacts (KV1 ?1) by the first vacuum contactor (KV1)With reactor (L) series winding, the other end of reactor (L) connects high-voltage motor (M),The other end of often opening main contacts (KV1 ?1) of the first vacuum contactor (KV1) connects and drivesMoving power supply,
It is characterized in that:
Start button (SB3 in described the first branch road; SB4) two ends also and connect first trueThe normally opened contact of empty contactor (KV1) (KV1 ?2);
The normally opened contact of the first vacuum contactor (KV1) in described the second branch road (KV1 ?3)The other end be connected to stop button (SB1; And start button (SB3 SB2); SB4)Between node on;
Another of the normally opened contact of the first auxiliary reclay (K11) in described the 3rd branch roadEnd is connected to stop button (SB1; And start button (SB3 SB2); SB4)On node;
The solenoid of described the first auxiliary reclay (K11) and described the first vacuum connectOn node between the normally opened contact of tentaculum (KV1) (KV1 ?3), connect wire, wireThe other end connect electric current relay (K0) normally-closed contact and the first auxiliary reclay(K11) node between normally opened contact;
That in described major loop, also accesses the second vacuum contactor (KV2) often opens main contacts(KV2 ?1), described the second vacuum contactor (KV2) often open main contacts (KV2 ?1)What be connected across described the first vacuum contactor (KV1) often opens main contacts (KV1 ?1) and electricityThe two ends of anti-device (L) series winding branch road.
2. high-voltage motor starts control device according to claim 1, it is characterized in that:
Described control device also comprises a time relay (KT) and the second middle relayDevice (K10),
The normally-closed contact of described the second auxiliary reclay (K10) is connected in described second trueThe normally-closed contact of empty contactor (KV2) (KV2 ?2) and start button (SB3; SB4)Between;
One end of the solenoid of the described time relay (KT) is connected in described secondBetween normally-closed contact and the start button (SB3 of relay (K10); SB4) node betweenUpper, the other end of the solenoid of the time relay (KT) connects the negative pole of controlling power supply;
The solenoid of described the second auxiliary reclay (K10) and the described time relay(KT) normally opened contact is contacted afterwards and is connected in the described time relay (KT) solenoidTwo ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521054100.9U CN205249092U (en) | 2015-12-16 | 2015-12-16 | High -voltage motor start control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521054100.9U CN205249092U (en) | 2015-12-16 | 2015-12-16 | High -voltage motor start control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205249092U true CN205249092U (en) | 2016-05-18 |
Family
ID=55948161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521054100.9U Expired - Fee Related CN205249092U (en) | 2015-12-16 | 2015-12-16 | High -voltage motor start control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205249092U (en) |
-
2015
- 2015-12-16 CN CN201521054100.9U patent/CN205249092U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20170065741A (en) | Method and system of controlling vehicle electric power for jump start | |
| CN205736978U (en) | Electric installation under a kind of car load time delay | |
| CN107276119A (en) | A kind of energy accumulation current converter black-start method | |
| CN104283263A (en) | Direct-current charging pile main circuit double-control power supply system and control method thereof | |
| CN203787951U (en) | Three-phase inconsistent protective circuit of circuit breaker | |
| CN205249092U (en) | High -voltage motor start control device | |
| CN105270192A (en) | Range extender for pure electric vehicle | |
| CN209133378U (en) | A kind of arc extinguishing DC contactor | |
| CN109291942A (en) | A kind of method of trolley locomotive auto-power-cutting | |
| CN206976250U (en) | A kind of spring operating mechanism switchs leap preventing device | |
| CN101630935A (en) | Automatic control circuit of electric motor | |
| CN105515476B (en) | The device and method for improving brush-less electrically exciting Shaft-Generator short circuit overload capacity | |
| CN204290398U (en) | A kind of direct current output switch circuit | |
| CN201327917Y (en) | Switching-off and tripping socket | |
| CN106816925A (en) | A kind of energy-storage system accessory power supply control system | |
| CN208723820U (en) | A kind of control circuit of motor | |
| CN209813731U (en) | Auxiliary power supply system for railway vehicle and railway vehicle | |
| CN104129317B (en) | I.e. fill formula trolleybus control method | |
| CN207573077U (en) | The startup of movable charging vehicle supplies electric installation | |
| CN105656297A (en) | Discharging method of direct driving type wind turbine generator system converter direct-current bus | |
| CN202364113U (en) | Power supply device of photovoltaic grid-connected inverter and photovoltaic grid-connected inverter | |
| CN207466759U (en) | A kind of electric vehicle steering controling circuit | |
| CN202003010U (en) | Load rejection testing device for generator | |
| CN206442140U (en) | Vehicle-mounted power supply system and automobile | |
| CN205440011U (en) | A increase journey ware for pure electric vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20211216 |