CN2755769Y - Vacuum arc chuted D.C. contactor - Google Patents
Vacuum arc chuted D.C. contactor Download PDFInfo
- Publication number
- CN2755769Y CN2755769Y CN 200420099155 CN200420099155U CN2755769Y CN 2755769 Y CN2755769 Y CN 2755769Y CN 200420099155 CN200420099155 CN 200420099155 CN 200420099155 U CN200420099155 U CN 200420099155U CN 2755769 Y CN2755769 Y CN 2755769Y
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- Prior art keywords
- vacuum
- contactor
- vacuum switch
- series
- direct current
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to a vacuum arc extinction direct current contactor which belongs to the technical field of low-voltage switches. The utility model is characterized in that the utility model substitutes two direct current electromagnetic coils for two original alternating current electromagnetic coils and a vacuum switch tube on the basis of the original unchanged mechanical parts of a vacuum alternating current contactor, two vacuum switch tubes are reserved and two capacitors and two resistors are added. Two direct current electromagnetic coils are sheathed on two coil iron cores. Two vacuum switch tubes are installed on a base through two bus wiring boards. The two direct current electromagnetic coils are connected in parallel. One capacitor and one resistor are connected in series and then are connected with the direct current electromagnetic coils in parallel to form an absorbing circuit. The two vacuum switch tubes are respectively connected in series to a 220V positive bus and a 220V negative bus. An electrolytic capacitor and a wire-wound resistor are connected in series and then are connected in parallel with load to form an absorbing circuit. The utility model has the major advantages that electric arc is not easy to generate, the arc extinction time is short, and the work is reliable and durable. The absorbing circuits can protect the relay and the inductive load from being burnt or broken down.
Description
(1) technical field
The utility model relates to low tension switching technique field, particularly is a kind of vacuum extinction D.C. contactor.
(2) background technology
The CZO series D.C. contactor that present domestic power plant, transformer station use, its arc quenching principle is that electric arc is introduced in the arc-extinguish chamber, utilizes the ion grid to come arc extinguishing, and shortcoming is that the quenching time is long, and electric arc is difficult for extinguishing, the easy scaling loss of contact.When load is inductive element, easily produce higher overvoltage, make the insulation breakdown in contact gap, arc reignition causes the contact adhesion to burn load.In addition, because its contact is exposed in the air, easily oxidation, dirty causes loose contact.By retrieval, AC vacuum contactor has more than 20 piece of patent documentation, and not seeing has the vacuum extinction D.C. contactor, does not also find this series products on the market.
(3) summary of the invention
The purpose of this utility model just is to provide a kind of vacuum extinction D.C. contactor, draws some advantages of vacuum A.C. contactor, overcomes the above-mentioned shortcoming of at present general D.C. contactor.
Above-mentioned purpose is realized by following technical proposals:
The vacuum extinction D.C. contactor comprises mechanical part and electric component.Mechanical part comprises pedestal, push pedal, armature, base plate, iron-core coil, return spring, touch spring and bus terminal block etc.Electric component comprises auxiliary switch and binding post etc.Push pedal and base plate all are installed on the pedestal.Armature is installed in the push pedal.Iron-core coil, return spring and auxiliary switch all are installed on the base plate.Touch spring, bus terminal block and binding post all are installed on the pedestal.It is characterized in that removing two AC electromagnetic coils and a vacuum switch tube of AC vacuum contactor, changed two d-c solenoids, kept original two vacuum switch tubes, increased by two electric capacity and two resistance.Two d-c solenoids are sleeved on two iron cores, and an electric capacity and a resistance welded are at the d-c solenoid tap terminals.Two vacuum switch tubes are installed on the pedestal by two bus terminal blocks.An electrochemical capacitor and a wire-wound resistor are installed on the pedestal, place between two vacuum switch tubes.As two d-c solenoid parallel connections in the DC control circuit.Electric capacity and resistance are together in series in parallel with d-c solenoid again, constitute absorption circuit.Two vacuum switch tubes as in the direct current major loop are connected in series to respectively in the positive and negative bus of 220V.Electrochemical capacitor and wire-wound resistor are together in series in parallel with load again, constitute absorption circuit.
D-c solenoid in the above-mentioned vacuum extinction D.C. contactor, the enamelled wire diameter of employing is Φ 0.16～0.18mm, and the number of turn is 10000～12000 circles, and its D.C. resistance is 1000 Ω ± 10 Ω.
The electric capacity of absorption circuit is 0.68 μ F/400V in the DC control circuit of above-mentioned vacuum extinction D.C. contactor, and resistance is 4.7K/2w.
Electrochemical capacitor is 47 μ F/400V in the direct current major loop of above-mentioned vacuum extinction D.C. contactor, and wire-wound resistor is 2.4K/15w.
After above technical scheme enforcement, owing to adopted vacuum switch tube, its contact is sealed in the porcelain tube of high vacuum, and the dielectric strength between contact is very high, so electric arc is difficult for producing, the quenching time is very short, arc extinction performance is not subjected to ectocine, its reliability and useful life improve greatly, can prolong maintenance cycle, even freedom from repairs.Since increasing the RC absorption circuit in the DC control circuit, thus can be absorbed at the electric arc of outage moment generation, in order to avoid the relay contact in the control loop is by electric arc burn.Owing to increased the RC absorption circuit in the direct current major loop, thus the overvoltage that produces in the moment that disconnects inductive load can be absorbed, in order to avoid insulation and loading coil insulate breakdown between contact.In addition, its installation requirement is consistent with CZO type contactor, can directly change, and is very easy.
(4) description of drawings
Accompanying drawing 1 is that master of the present utility model looks schematic diagram.
Accompanying drawing 2 is that the A-A of Fig. 1 cuts open schematic top plan view.
Accompanying drawing 3 is that the B-B of Fig. 2 cuts open a left side and looks schematic diagram.
Accompanying drawing 4 is its DC control circuit partial circuit diagram.
Accompanying drawing 5 is its direct current main loop circuit figure.
(5) embodiment
Embodiment of accompanying drawings:
In the accompanying drawing 1,2,3,1 is two vacuum switch tubes, and 2 is two d-c solenoids, the 3rd, and push pedal, the 4th, return spring, the 5th, base plate, the 6th, armature, the 7th, auxiliary switch, the 8th, wire-wound resistor R
2, the 9th, electrochemical capacitor C
2, the 10th, capacitor C
1, the 11st, resistance R
1, the 12nd, bus terminal block, the 13rd, binding post, the 14th, touch spring, the 15th, iron-core coil, the 16th, pedestal.
Shown in accompanying drawing, mechanical part of the present utility model comprises pedestal 16, push pedal 3, armature 6, base plate 5, iron-core coil 15, return spring 4, touch spring 14 and bus terminal block 12 etc.Its electric component comprises auxiliary switch 7 and binding post 13 etc.Push pedal 3 and base plate 5 all are installed on the pedestal 16.Armature 6 is installed in the push pedal 3.Iron-core coil 15, return spring 4 and auxiliary switch 7 all are installed on the base plate 5.Touch spring 14, bus terminal block 12 and binding post 13 all are installed on the pedestal 16.Below all be existing machinery of former vacuum A.C. contactor and electric component, its installation site does not change yet.Innovation part of the present utility model has been removed original two AC electromagnetic coils and a vacuum switch tube, has changed two d-c solenoids 2 (KD), keeps original two vacuum switch tubes 1 (KD), has increased by two electric capacity 10 (C
1), 9 (C
2) and two resistance 11 (R
1), 8 (R
2).As shown in Figure 2, two d-c solenoids 2 are sleeved on two iron-core coils 15 electric capacity 10 (C
1) and resistance 11 (R
1) be welded on d-c solenoid 2 tap terminals.Shown in Fig. 1,3, two vacuum switch tubes 1 are installed on the pedestal 16 by two bus terminal blocks 12.Electrochemical capacitor 9 (C
2) and wire-wound resistor 8 (R
2) be installed on the pedestal 16, place between two vacuum switch tubes 1.As shown in Figure 4, as two d-c solenoids 2 (KD) parallel connection in the DC control circuit.Electric capacity 10 (C
1) and resistance 11 (R
1) be together in series again in parallelly with d-c solenoid 2 (KD), constitute absorption circuit.As shown in Figure 5, as two vacuum switch tubes 1 (KD) in the direct current major loop, be connected in series to respectively in the positive and negative bus 12 of 220V.Electrochemical capacitor 9 (C
2) and wire-wound resistor 8 (R
2) be together in series again in parallelly with load L, constitute absorption circuit.
As shown in Figure 4, d-c solenoid 2 (KD), the enamelled wire diameter of employing are that diameter is Φ 0.16～0.18mm, and the number of turn is 10000～12000 circles, and its D.C. resistance is 1000 Ω ± 10 Ω.Capacitor C
1Be 0.68 μ F/400V, resistance R
1Be 4.7K/2w.
As shown in Figure 5, electrochemical capacitor C
2Be 47 μ F/400V, R
2Be 2.4K/15w.
Operation principle is: bus terminal block 12 is connected to the direct current major loop, and the d-c solenoid energising produces electromagnetic force, and armature 6 is inhaled mutually with iron-core coil, drives push pedal 3 actions.Push pedal 3 drives the contact action of vacuum switch tubes 1, and the extension of armature 6 promotes auxiliary switch 7 simultaneously, makes major loop contact terminal KD and auxiliary switch closure simultaneously, touch spring 14 and return spring 4 by compression, direct current major loop conducting at this moment.During d-c solenoid 2 outages, under the effect of return spring 4 and touch spring 14, armature 6 disconnects, and major loop contact terminal KD is disconnected.The electric arc that produces when KD disconnects extinguishes in vacuum switch tube 1, and produced simultaneously overvoltage is by the R of electric capacity 9 and resistance 8 formations
2C
2Absorption circuit absorbs, thereby cuts off the direct current major loop safely and reliably, has protected inductive load L.The overvoltage that DC control circuit produces is also by R
1C
1Absorption circuit absorbs, and has protected relay contact not burnt.So can reach its intended purposes.
Claims (4)
1. vacuum extinction D.C. contactor, comprise pedestal (16), push pedal (3), armature (6), base plate (5), iron-core coil (15), return spring (4), touch spring (14), bus terminal block (12), auxiliary switch (7) and binding post (13), original two AC electromagnetic coils and a vacuum switch tube have been it is characterized in that removing, two d-c solenoids (2) have been changed, keep original two vacuum switch tubes (1), two electric capacity (10) have been increased, (9) and two resistance (11), (8), two d-c solenoids (2) are sleeved on two iron-core coils (15), electric capacity (10) and resistance (11) are welded on the tap terminals of d-c solenoid (2), two vacuum switch tubes (1) are installed on the pedestal (16) by two bus terminal blocks (12), place between two vacuum switch tubes (1), two d-c solenoids (2) parallel connection, electric capacity (10) and resistance (11) are together in series in parallel with d-c solenoid (2) again, constitute absorption circuit, two vacuum switch tubes (1) just are being connected in series to 220V respectively, in the negative busbar, electrochemical capacitor (9) and wire-wound resistor (8) are together in series in parallel with load L again, constitute absorption circuit.
2. according to claims 1 described vacuum extinction D.C. contactor, it is characterized in that d-c solenoid (2), the enamelled wire diameter of phi 0.16 of employing
0.18mm the number of turn is 10000
12000 circles, its D.C. resistance are 1000 Ω ± 10 Ω.
3. according to claims 1 described vacuum extinction D.C. contactor, it is characterized in that electric capacity (10) is 0.68 μ F/400V, resistance (11) is 4.7K/2w.
4. according to claims 1 described vacuum extinction D.C. contactor, it is characterized in that electrochemical capacitor (9) is 47 μ F/400V, wire-wound resistor (8) is 2.4K/15w.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420099155 CN2755769Y (en) | 2004-12-25 | 2004-12-25 | Vacuum arc chuted D.C. contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420099155 CN2755769Y (en) | 2004-12-25 | 2004-12-25 | Vacuum arc chuted D.C. contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2755769Y true CN2755769Y (en) | 2006-02-01 |
Family
ID=35929395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420099155 Expired - Fee Related CN2755769Y (en) | 2004-12-25 | 2004-12-25 | Vacuum arc chuted D.C. contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2755769Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083165B (en) * | 2007-06-26 | 2010-08-04 | 中国石化集团胜利石油管理局电力管理总公司 | Lightning arrester with thermal excitation dropper |
| US8058574B2 (en) | 2006-09-04 | 2011-11-15 | Siemens Aktiengesellschaft | Auxiliary contact block for expanding a switching device |
| CN102956401A (en) * | 2012-10-29 | 2013-03-06 | 天水二一三电器有限公司 | Bipolar DC contactor |
| CN109639159A (en) * | 2018-12-18 | 2019-04-16 | 辽宁恒顺新能源科技有限公司 | High-voltage rectifying system |
| CN113471032A (en) * | 2020-03-30 | 2021-10-01 | 西门子股份公司 | Electromechanical compact protective switching device |
-
2004
- 2004-12-25 CN CN 200420099155 patent/CN2755769Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8058574B2 (en) | 2006-09-04 | 2011-11-15 | Siemens Aktiengesellschaft | Auxiliary contact block for expanding a switching device |
| CN101506926B (en) * | 2006-09-04 | 2012-05-30 | 西门子公司 | Auxiliary contact block for expanding a switching device |
| CN101083165B (en) * | 2007-06-26 | 2010-08-04 | 中国石化集团胜利石油管理局电力管理总公司 | Lightning arrester with thermal excitation dropper |
| CN102956401A (en) * | 2012-10-29 | 2013-03-06 | 天水二一三电器有限公司 | Bipolar DC contactor |
| CN102956401B (en) * | 2012-10-29 | 2015-04-29 | 天水二一三电器有限公司 | Bipolar DC contactor |
| CN109639159A (en) * | 2018-12-18 | 2019-04-16 | 辽宁恒顺新能源科技有限公司 | High-voltage rectifying system |
| CN109639159B (en) * | 2018-12-18 | 2024-04-02 | 辽宁恒顺新能源科技有限公司 | High-voltage rectifying system |
| CN113471032A (en) * | 2020-03-30 | 2021-10-01 | 西门子股份公司 | Electromechanical compact protective switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |