CN203536286U - Low-voltage vacuum contactor - Google Patents
Low-voltage vacuum contactor Download PDFInfo
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- CN203536286U CN203536286U CN201320742953.6U CN201320742953U CN203536286U CN 203536286 U CN203536286 U CN 203536286U CN 201320742953 U CN201320742953 U CN 201320742953U CN 203536286 U CN203536286 U CN 203536286U
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- contactor
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Abstract
Provided is a low-voltage vacuum contactor, comprising a low-voltage electromagnetic mechanism, vacuum arc-extinguishing chambers, and T-shaped connecting levers. A movable contact and a static contact on an upper end and a lower end of the vacuum arc-extinguishing chamber are respectively connected with the vacuum arc-extinguishing chamber through a movable conducting bar and a static conducting bar and the movable contact and the static contact are led out. An armature is disposed on an end face of the connecting lever facing a side of the low-voltage electromagnetic mechanism. A movable contact pull-rod spring is disposed between the connecting lever and the movable contact of the vacuum arc-extinguishing chamber. The low-voltage electromagnetic mechanism comprises an AC-DC conversion control circuit and a coil arranged opposite to the armature. The AC-DC conversion control circuit discharges electric energy on the coil, thereby absorbing the armature to drive the connecting lever to generate downward pressure on the movable contact pull-rod spring, so as to realize switch-on of the vacuum contactor. A separating spring is disposed between an end of the connecting lever and the base, the coil is powered off, and release forces of the separating spring push the armature to reset, thereby realizing switching-off of the vacuum contactor. No arc light and others are generated in switching-on and switching-off operation of the contactor, the security of the contactor is relatively high. The vacuum contactor is characterized by controllable cost, reliable operation, low operation noise, long life, and is simple and convenient.
Description
Technical field
The utility model relates to the low-voltage circuit breaker technical field of electric power system, specifically a kind of low-voltage vacuum contactor.
Background technology
In existing low-voltage circuit breaker field, prevailing is to adopt air as cut-offfing and dielectric, air type probe of contactor is when closed and disjunction, because deciliter time is long, speed is slow, therefore, easily produces arcing, spray arc phenomenon, such contactor easily produces burn contact and causes accident, poor stability.Therefore the explosion-proof type circuit breaker of using as colliery at special dimension, it is unable to do what one wishes that the circuit breaker of air dielectric seems.In addition, the field of circuit breaker being had relatively high expectations at environment, as industries such as mining, chemical industry, metallurgy and weavings, the circuit breaker of traditional low pressure plastic shell type, arc control device may reduce because entering pollutant the break performance of circuit breaker, even produce arcing etc. and cause the generation of security incident, so low-voltage vacuum contactor causing people's concern and research, at increasing special occasions, in succession using in the future.
Utility model content
Technical problem to be solved in the utility model is to overcome in prior art air type probe of contactor easily to produce arcing, spray arc phenomenon, burn contact and cause accident, and the problems such as poor stability, provide a kind of low-voltage vacuum contactor.
The utility model is to address the above problem adopted technical scheme to be: a kind of low-voltage vacuum contactor, the T-shaped connecting lever that is that comprises low voltage electromagnetic mechanism, the vacuum interrupter being fixed on pedestal and control combined floodgate, separating brake action, the moving contact of described vacuum interrupter upper and lower side is arranged with quiet busbar and is connected and draws by moving conductive respectively with fixed contact, connecting lever is provided with armature towards the end face of low voltage electromagnetic mechanism one side, between connecting lever and the moving contact of vacuum interrupter, is provided with moving contact pull-rod spring; Described low voltage electromagnetic mechanism comprises AC-DC conversion control circuit and the inner coil that is provided with iron core, coil and armature are oppositely arranged, AC-DC conversion control circuit discharges electric energy on coil, absorption armature and then drive connecting lever produce the downward pressure of moving contact pull-rod spring, moving contact in vacuum interrupter is contacted with fixed contact, realize the combined floodgate of vacuum contactor; Between one end of described connecting lever and base, be also provided with tripping spring, coil blackout, the release force of tripping spring promotes armature and resets, and makes in vacuum interrupter moving contact separated with fixed contact, realizes the separating brake of vacuum contactor.
Described low voltage electromagnetic mechanism also comprises auxiliary switch, and the switch contact of auxiliary switch is connected with armature and is synchronized with the movement.The effect of auxiliary switch: when vacuum contactor is implemented respectively combined floodgate, separating brake; knee-action due to armature; thereby the switch contact of auxiliary switch is moved up and down; drive two pairs of make and break contact actions of auxiliary switch inside simultaneously; form closure and the disjunction of make and break contact; can, in two pairs of make and break contact access control loops, realize relevant protection or the output of position signalling.
In the utility model, the effect of moving contact pull-rod spring: when vacuum contactor is implemented to close a floodgate, when the moving contact of vacuum interrupter and two contacts of fixed contact, reduce bounce time and increase certain excess of stroke, guaranteeing associated mechanical characteristic.
Beneficial effect: it is indoor that the moving contact of low-voltage vacuum contactor is placed on vacuum extinction, the two ends up and down of vacuum interrupter are arranged with quiet busbar and are connected and draw by moving conductive respectively; During combined floodgate, by coil, rely on electromagnetic induction absorption armature, and then drive connecting lever to produce feed motion power; During separating brake, no current passes through in coil, by tripping spring, drives connecting lever direct action to implement separating brake, because close and cut-off all and to carry out vacuum extinction is indoor, so produce without arc lights such as arcings during action, fail safe is higher; Compare and there is following advantage with traditional low pressure plastic casing type circuit breaker air switch: 1, compact conformation integrated level is high, and volume is little; 2, during drop-out current without arcing phenomena, drop-out current is large, can reach 1000A, is applicable to causing existing due to electric arc light the industries such as colliery, chemical industry, weaving of safety factor; 3, adopt the electromagnetic mechanism of technology maturation, have simple and convenient, cost is controlled and the feature of reliable in action; 4, operation noise is little, is less than 20 decibels, and the life-span is long, and electrical endurance can reach 40,000 times, and can reach 100,000 mechanical endurance, safe and reliable.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is the left view of Fig. 1.
Reference numeral: 1, pedestal, 2, moving conductive row, 3, tripping spring, 4, vacuum interrupter, 5, quiet busbar, 6, moving contact pull-rod spring, 7, connecting lever, 8, armature, 9, coil, 10, auxiliary switch.
Embodiment
As depicted in figs. 1 and 2, a kind of low-voltage vacuum contactor, the T-shaped connecting lever 7 that is that comprises low voltage electromagnetic mechanism, the vacuum interrupter 4 being fixed on pedestal 1 and control combined floodgate, separating brake action, low voltage electromagnetic mechanism is positioned over the right side of vacuum interrupter 4, the moving contact of described vacuum interrupter 4 upper and lower sides is arranged 2 by moving conductive respectively with fixed contact and is connected and draws with quiet busbar 5, described connecting lever 7 is provided with armature 8 towards the end face of low voltage electromagnetic mechanism one side, between connecting lever 7 and the moving contact of vacuum interrupter 4, is provided with moving contact pull-rod spring 6; Described low voltage electromagnetic mechanism comprises AC-DC conversion control circuit and the inner coil 9 that is provided with iron core, coil 9 is oppositely arranged with armature 8, AC-DC conversion control circuit discharges electric energy on coil 9, absorption armature 8 and then drive connecting lever 7 produce the downward pressure of moving contact pull-rod spring 6, moving contact in vacuum interrupter 4 is contacted with fixed contact, realize the combined floodgate of vacuum contactor; Between one end of described connecting lever 7 and base 1, be also provided with tripping spring 3, coil 9 power-off, the release force of tripping spring 3 promotes armature 8 and resets, and makes in vacuum interrupter 4 moving contact separated with fixed contact, realizes the separating brake of vacuum contactor.
Further, this low voltage electromagnetic mechanism also comprises auxiliary switch 10, and the switch contact of auxiliary switch 10 is connected and is synchronized with the movement with armature 8.
Feed motion process of the present utility model: AC-DC conversion control circuit is by abrupt release electric energy on coil 9 certain orientations, effect due to electromagnetic induction, iron core in coil 9 can adsorb armature 8 and move downwards, because the other end of armature 8 and T-shaped connecting lever 7 link together, connecting lever 7 is connected with the moving contact pull-rod spring 6 on vacuum interrupter 4 again, when the iron core absorption armature 8 in coil 9 moves, 6 one the downward pressure of moving contact pull-rod spring that drive connecting lever 7 to produce vacuum interrupter 4, the moving contact in vacuum interrupter 4, the quick close contact of fixed contact, vacuum contactor is implemented to close a floodgate, after closing a floodgate, coil 9 is charged for a long time, and keep "on" position.
Separating brake course of action of the present utility model: the separating brake process of contactor, while being in fact coil 9 power-off, tripping spring 3 promotes the reseting procedure of armature 8.Coil 9 power-off during separating brake, the release force that tripping spring 3 is outer promotes armature 8 and moves up, because the other end of armature 8 and T-shaped connecting lever 7 link together, connecting lever 7 is connected with moving contact pull-rod spring 6 on vacuum interrupter 4 again, vacuum interrupter 4 moving contacts, two contacts of fixed contact are separated fast, implement the separating brake of vacuum contactor.After separating brake, coil 9 is not charged, and the outside tension force discharging by tripping spring 3 keeps gate-dividing state.In the utility model, close and cut-off all and carry out in vacuum extinction, so produce without arc lights such as arcings while moving, fail safe is higher.
Claims (2)
1. a low-voltage vacuum contactor, the T-shaped connecting lever (7) that is that comprises low voltage electromagnetic mechanism, the vacuum interrupter (4) being fixed on pedestal (1) and control combined floodgate, separating brake action, the moving contact of described vacuum interrupter (4) upper and lower side is arranged (2) by moving conductive respectively with fixed contact and is connected and draws with quiet busbar (5), it is characterized in that: connecting lever (7) is provided with armature (8) towards the end face of low voltage electromagnetic mechanism one side, between connecting lever (7) and the moving contact of vacuum interrupter (4), be provided with moving contact pull-rod spring (6); Described low voltage electromagnetic mechanism comprises AC-DC conversion control circuit and the inner coil (9) that is provided with iron core, coil (9) is oppositely arranged with armature (8), AC-DC conversion control circuit is at the upper electric energy that discharges of coil (9), absorption armature (8) and then drive connecting lever (7) produce the downward pressure of moving contact pull-rod spring (6), moving contact in vacuum interrupter (4) is contacted with fixed contact, realize the combined floodgate of vacuum contactor; Between one end of described connecting lever (7) and base (1), be also provided with tripping spring (3), coil (9) power-off, the release force of tripping spring (3) promotes armature (8) and resets, and makes the middle moving contact of vacuum interrupter (4) separated with fixed contact, realizes the separating brake of vacuum contactor.
2. a kind of low-voltage vacuum contactor according to claim 1, is characterized in that: described low voltage electromagnetic mechanism also comprises auxiliary switch (10), and the switch contact of auxiliary switch (10) is connected and is synchronized with the movement with armature (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742953.6U CN203536286U (en) | 2013-11-22 | 2013-11-22 | Low-voltage vacuum contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742953.6U CN203536286U (en) | 2013-11-22 | 2013-11-22 | Low-voltage vacuum contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203536286U true CN203536286U (en) | 2014-04-09 |
Family
ID=50422467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320742953.6U Expired - Fee Related CN203536286U (en) | 2013-11-22 | 2013-11-22 | Low-voltage vacuum contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203536286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681635A (en) * | 2017-09-29 | 2018-02-09 | 于士程 | Oil-well motor intelligent control protector |
-
2013
- 2013-11-22 CN CN201320742953.6U patent/CN203536286U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681635A (en) * | 2017-09-29 | 2018-02-09 | 于士程 | Oil-well motor intelligent control protector |
| CN107681635B (en) * | 2017-09-29 | 2023-07-07 | 大庆冠佳科技有限公司 | Intelligent control and protection device for oil well motor |
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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: 20140409 Termination date: 20181122 |