CN104078281A - Non-arcing direct current contactor - Google Patents
Non-arcing direct current contactor Download PDFInfo
- Publication number
- CN104078281A CN104078281A CN201310098047.1A CN201310098047A CN104078281A CN 104078281 A CN104078281 A CN 104078281A CN 201310098047 A CN201310098047 A CN 201310098047A CN 104078281 A CN104078281 A CN 104078281A
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- CN
- China
- Prior art keywords
- contactor
- direct current
- main switch
- triode
- arc
- 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.)
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Abstract
The invention discloses a non-arcing direct current contactor which comprises a double-pole direct current mechanical contactor part, a triode mounted in parallel with a main switch of the direct current contactor part, and a voltage dependent resistor, wherein the double-pole direct current mechanical contactor part comprises an electromagnetic driving component, the main switch, and an auxiliary switch linked with the main switch. The non-arcing direct current contactor thoroughly eliminates discharge sparks caused by action of the switches of the contactor; the electric service life of the heavy direct current contactor is prolonged greatly; and electromagnetic interference is reduced greatly.
Description
Technical field
The invention belongs to D.C. contactor, relate to without arc direct current machinery contactor.
Background technology
Contactor is of a great variety, when the Mechanical Contact device switch of contact-carrying, all can produce electric spark, and surrounding environment is caused to electromagnetic interference, and contacts of contactor is caused to calcination and damage, has a strong impact on the electrical endurance of contactor.High power DC Mechanical Contact device is especially true, the high power DC Mechanical Contact device electrical endurance of a lot of occasions is not and one of the percentage of mechanical endurance, therefore high power DC Mechanical Contact device often adopts various arc extinguishing technology, the most advanced, effect is best is that vacuum adds magnetic blow-out technical scheme, but also just alleviate contacts of contactor sparking problem, fundamentally do not addressed this problem.
Summary of the invention
While the invention provides a kind of switch motion without the direct current machinery contactor of arc.
The technical solution adopted in the present invention is:
A kind of comprise without arc D.C. contactor: double-pole direct current machinery contactor, the triode and the piezo-resistance that are installed in parallel with double-pole direct current machinery contactor main switch; Described double-pole direct current machinery contactor comprises: electromagnetic drive, main switch and the auxiliary switch linking with main switch, one end of auxiliary switch is by the current-limiting resistance connecting triode control utmost point.
Of the present invention without the interlock of arc D.C. contactor main switch and auxiliary switch, and main switch actuating length is greater than auxiliary switch actuating length, by electromagnetic drive control action.
The discharge spark causing when contactless contactor moves of thoroughly having eliminated without arc D.C. contactor of the present invention, lengthens the electrical endurance of D.C. high-current contactor greatly, and electromagnetic interference declines greatly.Simultaneously this without arc D.C. contactor, production technology is simple, be particularly suitable for batch production.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is an a kind of embodiment without arc D.C. contactor provided by the invention.
Embodiment
With reference to figure 1, the embodiment of the present invention includes double-pole direct current machinery contactor 1, current-limiting resistance 2, triode 3 and piezo-resistance 4, main switch 11 actuating lengths of double-pole direct current machinery contactor 1 are greater than auxiliary switch 12 actuating lengths, current-limiting resistance 2 is connected and is received the control utmost point of triode 3 with the auxiliary switch 12 of double-pole direct current machinery contactor 1, collector electrode, emitter and piezo-resistance 4 parallel connections of triode 3, be installed in parallel with the main switch 11 of double-pole direct current machinery contactor 1, the electromagnetic drive 13 of double-pole direct current machinery contactor 1 is controlled by KC again.
The major loop of the embodiment of the present invention is from A+ to A-, in the time that double-pole direct current machinery contactor 1 main switch 11, auxiliary switch 12 and triode 3 all disconnect, it is off-state, now KC powers up to electromagnetic drive 13, drive main switch 11 and auxiliary switch 12 closed action simultaneously, auxiliary switch 12 is first closed, drive triode 3 conductings by current-limiting resistance 2, then main switch 11 closures, major loop A+ is to the complete conducting of A-; Now KC power-off, electromagnetic drive 13 discharges main switch 11 and auxiliary switch 12, and main switch 11 and auxiliary switch 12 do simultaneously and disconnect action, and first main switch 11 disconnects, and then auxiliary switch 12 disconnects, triode 3 disconnects, and major loop A+ disconnects completely to A-.
Not that high pressure, large current applications piezo-resistance 4 can be omitted.
Preferably, for high-power direct current contactor, above-mentioned triode 3 adopts IGBT series pliotron.
Claims (4)
1. without an arc D.C. contactor, comprise double-pole direct current machinery contactor, triode and piezo-resistance, it is characterized in that triode and piezo-resistance parallel connection, then be installed in parallel with D.C. contactor main switch.
2. one according to claim 1 is without arc D.C. contactor, it is characterized in that: described double-pole direct current machinery contactor comprises: electromagnetic drive, main switch and auxiliary switch, main switch and auxiliary switch interlock, and main switch actuating length is greater than auxiliary switch actuating length.
3. one according to claim 1, without arc D.C. contactor, is characterized in that: the auxiliary switch of described double-pole direct current machinery contactor is by the current-limiting resistance connecting triode control utmost point.
4. one according to claim 1, without arc D.C. contactor, is characterized in that: described triode preferentially adopts IBGT series pliotron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098047.1A CN104078281A (en) | 2013-03-26 | 2013-03-26 | Non-arcing direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098047.1A CN104078281A (en) | 2013-03-26 | 2013-03-26 | Non-arcing direct current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104078281A true CN104078281A (en) | 2014-10-01 |
Family
ID=51599475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310098047.1A Pending CN104078281A (en) | 2013-03-26 | 2013-03-26 | Non-arcing direct current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104078281A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050219020A1 (en) * | 2003-04-03 | 2005-10-06 | Alf Wabner | Electromechanical switch |
| CN101625933A (en) * | 2009-08-01 | 2010-01-13 | 沈永年 | Arc-suppression circuit of alternating-current contactor and control method thereof |
| CN203690213U (en) * | 2013-03-26 | 2014-07-02 | 刘爱民 | Non-arcing DC contactor |
-
2013
- 2013-03-26 CN CN201310098047.1A patent/CN104078281A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050219020A1 (en) * | 2003-04-03 | 2005-10-06 | Alf Wabner | Electromechanical switch |
| CN101625933A (en) * | 2009-08-01 | 2010-01-13 | 沈永年 | Arc-suppression circuit of alternating-current contactor and control method thereof |
| CN203690213U (en) * | 2013-03-26 | 2014-07-02 | 刘爱民 | Non-arcing DC contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141001 |