CN203746700U - Contactor de-excitation device - Google Patents
Contactor de-excitation device Download PDFInfo
- Publication number
- CN203746700U CN203746700U CN201420087826.1U CN201420087826U CN203746700U CN 203746700 U CN203746700 U CN 203746700U CN 201420087826 U CN201420087826 U CN 201420087826U CN 203746700 U CN203746700 U CN 203746700U
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- CN
- China
- Prior art keywords
- contactor
- contacts
- control line
- excitation
- contact
- 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 - Lifetime
Links
- 238000004804 winding Methods 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000001629 suppression Effects 0.000 claims description 17
- 230000005347 demagnetization Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
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- Relay Circuits (AREA)
Abstract
The utility model discloses a contactor de-excitation device, which is characterized by comprising a contactor provided with a mechanical locking device, and a de-excitation resistor (4), wherein the de-excitation resistor (4) is connected with a pair of contactor normally-closed contacts (2) of the contactor in series, the series branch is connected with a winding coil (3) to be subjected to de-excitation in parallel and is used for de-excitation of the winding coil (3), and a contactor main contact (1) is served as a power-on main switch of a circuit of the winding coil (3) to be subjected to de-excitation. The contactor de-excitation device adopts the combination of an AC contactor and a few parts to replace a special magnetic blow-out switch in the case of low current, reduces the size of loop equipment, and has the advantages of high reliability and low cost. The contactor de-excitation device has good effect after experiments in practice.
Description
Technical field
The utility model relates to demagnetization control technology, is a kind of contactor field suppression equipment specifically.
Background technology
Because energized circuit induction reactance is very large, cut-out electric current moment can produce electric arc, damages electric equipment.In synchronous machinery excitation loop, also need to adopt special field suppression switch even if be less than the exciting current of 200A at present, volume is large, cost is high.
Summary of the invention
Technical problem to be solved in the utility model is to provide and is a kind ofly less than the low cost field suppression equipment in the winding loop of 200A at exciting current.
Described contactor field suppression equipment, it is characterized in that: comprise contactor and de-excitation resistance with mechanical locking device, described de-excitation resistance is connected with a pair of contactor normally-closed contact of described contactor, this series arm is in parallel with the winding coil for the treatment of demagnetization and for the demagnetization for this winding coil, and contactor main contacts is as the main switch that powers on of winding coil circuit for the treatment of demagnetization.
Described mechanical locking device comprises mechanical latching control line bag, as the electromagnetic core of contacts of contactor limit rod be sleeved on the limit rod spring outside electromagnetic core, described contacts of contactor limit rod contacts with the contact connecting rod of contactor, in the time of contacts of contactor attracting state, contacts of contactor limit rod stretches out and pins contact under limit rod spring action, make contacts of contactor locked and remain closed, in the time of mechanical latching control line Bao get electricity, contacts of contactor limit rod is regained under electromagnetic force, makes the contacts of contactor state that unlocks.
As a kind of embodiment, described contactor field suppression equipment also comprises time relay sj, following three loops at Alternating Current Power Supply end control circuit that forms field suppression equipment in parallel: the first loop comprises the normally closed time delay break contact of the contactor closing switch, the time relay sj that are connected in series, contactor control line bag; Second servo loop comprises that the first contactor being connected in series often opens auxiliary contact, time relay sj control line bag; Tertiary circuit comprises that the trip button, the second contactor that are connected in series often open auxiliary contact, mechanical latching control line bag.
The utility model adopts the combination of A.C. contactor and a few components to replace special field suppression switch in small electric stream situation, has reduced the volume of loop equipment, has high reliability, advantage cheaply.The coil of controlling A.C. contactor closure is obtaining electric completing after closed action, owing to having installed mechanical latching part additional, also can make its holding contact closure state even if cut off the electricity supply, in the time of contactor opening operation, first closed magnetism elimination circuit, then tripping contactor closing contact, has avoided the generation of electric arc, thereby has played the effect of field suppression switch.This device has played good effect through experiment in practice.
Brief description of the drawings
Fig. 1 is the utility model embodiment control circuit figure,
Fig. 2 is the utility model Application Example winding diagram,
Fig. 3 is the contact closure condition schematic diagram of mechanical latching,
Fig. 4 is a fragmentation state schematic diagram that goes out for mechanical latching.
In figure: 1-contactor main contacts, 2-contactor normally-closed contact, 3-winding coil, 4-de-excitation resistance, 5-contactor closing switch, 6-trip button, the normally closed time delay break contact of 7-time relay sj, the 8-the first contactor is often opened auxiliary contact, 9-mechanical latching control line bag, 10-contactor control line bag, 11-time relay sj control line bag, 12-limit rod spring, 13-contacts of contactor limit rod, 14-contact connecting rod, the 15-the second contactor is often opened auxiliary contact.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated: as shown in Figure 1, described contactor field suppression equipment, comprise contactor and de-excitation resistance 4 with mechanical locking device, described de-excitation resistance 4 is connected with a pair of contactor normally-closed contact 2 of described contactor, this series arm is in parallel with the winding coil 3 for the treatment of demagnetization and for the demagnetization for this winding coil, and contactor main contacts 1 is as the main switch that powers on of winding coil 3 circuit for the treatment of demagnetization.Fig. 1 is the application example of this device in the excitation winding of brushless synchronous machine.
As shown in Figure 3,4, described mechanical locking device comprises mechanical latching control line bag 9, as the electromagnetic core of contacts of contactor limit rod 13 be sleeved on the limit rod spring 12 outside electromagnetic core, described contacts of contactor limit rod 13 contacts with the contact connecting rod 14 of contactor, as Fig. 3, in the time of contacts of contactor attracting state, contacts of contactor limit rod 13 stretches out and pins contact under limit rod spring 12 effect, make contacts of contactor locked and remain closed, even the closure state that contactor line bag dead electricity can break contact yet.As Fig. 4, mechanical latching control line bag 9 when electric contacts of contactor limit rod 13 under electromagnetic force, regain, make the contacts of contactor state that unlocks.If after contactor control line bag dead electricity, mechanical latching control line bag 9 must be electric, will tripping contacts of contactor.
As a kind of embodiment of switch control, as shown in Figure 2, described contactor field suppression equipment comprises time relay sj, following three loops at Alternating Current Power Supply end control circuit that forms field suppression equipment in parallel: the first loop comprises the normally closed time delay break contact 7 of the contactor closing switch 5, the time relay sj that are connected in series, contactor control line bag 10; Second servo loop comprises that the first contactor being connected in series often opens auxiliary contact 8, time relay sj control line bag 11; Tertiary circuit comprises that the trip button 6, the second contactor that are connected in series often open auxiliary contact 15, mechanical latching control line bag.After closing a floodgate, contactor normally opened contact is because contactor control line bag 10 obtains electric and closed, the contact of mechanical latching automatic locking closure, time relay sj control line bag 11 obtains electric after the first contactor is often opened auxiliary contact 8 closures, the normally closed time delay break contact 7 of time relay sj is disconnected after delayed contact closure state is stable, or disconnect after subscribing the operating time, contactor control line bag 10 dead electricity, therefore contactor is without keeping operating state, the effect that contactor reaches energy saving and increases the service life, now current supply circuit still closed winding normally work.Here time relay sj also plays the stable effect of normally opened contact closure state that ensures.In the time that needs disconnect winding power supply, due to contactor dead electricity, contactor normally-closed contact 2 is in closure state, and magnetism elimination circuit is ready, presses trip button 6, because the second contactor is often opened auxiliary contact 15 keep locking under mechanical latching effect, tertiary circuit closure, mechanical latching control line bag 9 obtains electric, and the electromagnetic core of mechanical latching is regained and contact locking, contactor normally opened contact tripping simultaneously, disconnects current supply circuit.Because magnetism elimination circuit is in standby condition, while disconnecting current supply circuit, play demagnetization effect.Under the little current status that is less than 200A electric current, the application's scheme is good through experimental work, has played the effect that realizes field suppression switch with the locking contactor of unloading cheaply.
Claims (3)
1. a contactor field suppression equipment, it is characterized in that: comprise contactor and de-excitation resistance (4) with mechanical locking device, described de-excitation resistance (4) is connected with a pair of contactor normally-closed contact (2) of described contactor, this series arm is in parallel with the winding coil (3) for the treatment of demagnetization and for the demagnetization for this winding coil, and contactor main contacts (1) is as the main switch that powers on of winding coil (3) circuit for the treatment of demagnetization.
2. contactor field suppression equipment according to claim 1, it is characterized in that: described mechanical locking device comprises mechanical latching control line bag (9), as the electromagnetic core of contacts of contactor limit rod (13), with the limit rod spring (12) being sleeved on outside electromagnetic core, described contacts of contactor limit rod (13) contacts with the contact connecting rod (14) of contactor, in the time of contacts of contactor attracting state, contacts of contactor limit rod (13) stretches out and pins contact under limit rod spring (12) effect, make contacts of contactor locked and remain closed, mechanical latching control line bag (9) when electric contacts of contactor limit rod (13) under electromagnetic force, regain, make the contacts of contactor state that unlocks.
3. contactor field suppression equipment according to claim 2, it is characterized in that: also comprise time relay sj, following three loops at Alternating Current Power Supply end control circuit that forms field suppression equipment in parallel: the first loop comprises the normally closed time delay break contact of contactor closing switch (5), time relay sj (7), the contactor control line bag (10) that are connected in series; Second servo loop comprises that the first contactor being connected in series often opens auxiliary contact (8), time relay sj control line bag (11); Tertiary circuit comprises that the trip button (6), the second contactor that are connected in series often open auxiliary contact (15), mechanical latching control line bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087826.1U CN203746700U (en) | 2014-02-28 | 2014-02-28 | Contactor de-excitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087826.1U CN203746700U (en) | 2014-02-28 | 2014-02-28 | Contactor de-excitation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746700U true CN203746700U (en) | 2014-07-30 |
Family
ID=51346467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087826.1U Expired - Lifetime CN203746700U (en) | 2014-02-28 | 2014-02-28 | Contactor de-excitation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225898A (en) * | 2015-09-01 | 2016-01-06 | 国家电网公司 | A kind of touch controls device |
| CN109979783A (en) * | 2017-12-28 | 2019-07-05 | 中国石油天然气股份有限公司 | Contactor |
-
2014
- 2014-02-28 CN CN201420087826.1U patent/CN203746700U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225898A (en) * | 2015-09-01 | 2016-01-06 | 国家电网公司 | A kind of touch controls device |
| CN109979783A (en) * | 2017-12-28 | 2019-07-05 | 中国石油天然气股份有限公司 | Contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170215 Address after: 430074 Optics Valley City, Hubei Province, No. 58 Optics Valley Avenue, the headquarters of the international building on the 7 floor, building 6 Patentee after: Wuhan City Lushui Automatic Control Technology Co.,Ltd. Address before: 430074 Optics Valley City, Hubei Province, No. 58 Optics Valley Avenue, the headquarters of the international building on the 7 floor, building 6 Patentee before: WUHAN LUSHUI TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |