CN203690213U - Non-arcing DC contactor - Google Patents
Non-arcing DC contactor Download PDFInfo
- Publication number
- CN203690213U CN203690213U CN201320139333.3U CN201320139333U CN203690213U CN 203690213 U CN203690213 U CN 203690213U CN 201320139333 U CN201320139333 U CN 201320139333U CN 203690213 U CN203690213 U CN 203690213U
- Authority
- CN
- China
- Prior art keywords
- contactor
- main switch
- arc
- direct current
- triode
- 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
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a non-arcing DC contactor comprising a dual-tool DC mechanical contactor, an audion and a piezoresistor which are connected to a DC contactor main switch in parallel; the dual-tool DC mechanical contactor comprises an electromagnetic driving part, a main switch and an auxiliary switch in linkage with the main switch. The non-arcing DC contactor completely eliminates discharging sparkles caused by actions of switching on and off of the contactor, and thus the electric life of the DC heavy current contactor and the electromagnetic interference is greatly reduced.
Description
Technical field
The utility model belongs to D.C. contactor, relates 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
When the utility model provides a kind of switch motion without the direct current machinery contactor of arc.
The technical scheme that the utility model adopts 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 utility model 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 utility model, 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 utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment without arc D.C. contactor that the utility model provides.
Embodiment
With reference to figure 1, the utility model embodiment 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 utility model embodiment 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 and D.C. contactor main switch are installed in parallel.
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 adopts IBGT series pliotron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320139333.3U CN203690213U (en) | 2013-03-26 | 2013-03-26 | Non-arcing DC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320139333.3U CN203690213U (en) | 2013-03-26 | 2013-03-26 | Non-arcing DC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690213U true CN203690213U (en) | 2014-07-02 |
Family
ID=51012085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320139333.3U Expired - Fee Related CN203690213U (en) | 2013-03-26 | 2013-03-26 | Non-arcing DC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203690213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078281A (en) * | 2013-03-26 | 2014-10-01 | 刘爱民 | Non-arcing direct current contactor |
-
2013
- 2013-03-26 CN CN201320139333.3U patent/CN203690213U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078281A (en) * | 2013-03-26 | 2014-10-01 | 刘爱民 | Non-arcing direct current contactor |
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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: 20140702 Termination date: 20170326 |