CN201985041U - Nonpolar direct-current contactor arc extinguishing system - Google Patents
Nonpolar direct-current contactor arc extinguishing system Download PDFInfo
- Publication number
- CN201985041U CN201985041U CN2011200619051U CN201120061905U CN201985041U CN 201985041 U CN201985041 U CN 201985041U CN 2011200619051 U CN2011200619051 U CN 2011200619051U CN 201120061905 U CN201120061905 U CN 201120061905U CN 201985041 U CN201985041 U CN 201985041U
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- Prior art keywords
- contact
- permanent magnet
- contactor
- nonpolarity
- seal casinghousing
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Abstract
The utility model discloses a nonpolar direct-current contactor arc extinguishing system, which comprises a movable contact head, a static contact head, a first permanent magnet, a second permanent magnet and a third permanent magnet. The second permanent magnet is arranged in the middle of a first contact and a second contact, the first permanent magnet is arranged on the outer side of the first contact, and the third permanent magnet is arranged on the outer side of the second contact. The first permanent magnet, the first contact, a third contact, the second permanent magnet, the second contact, a fourth contact and the third permanent magnet are arranged at spaced intervals, and the polarity of adjacent magnetic poles of the first permanent magnet, the second permanent magnet and the third permanent magnet are opposite. When a magnetic field formed by the first permanent magnet and the second permanent magnet attracts an electric arc generated between the first contact and the third contact to one side, a magnetic field formed by the third permanent magnet and the second permanent magnet attracts an electric arc generated between the second contact and the fourth contact to one opposite side, thereby ensuring the arc spraying directions of electric arcs generated by two contacts are completely opposite.
Description
Technical field
The utility model relates to the low-voltage electrical apparatus field, relates in particular to a kind of nonpolarity D.C. contactor arc quenching system.
Background technology
The arc quenching method of D.C. contactor has natural arc extinguishing, metal gate sheet arc extinguishing, vacuum extinction, pressed gas arc extinguishing, self magnetic blow-out bond grid sheet arc extinguishing, permanent magnetism magnetic quenching, pressed gas in conjunction with forms such as permanent magnetism magnetic quenchings.
But above-mentioned arc quenching method all has the characteristics of self, only can be applicable to the part occasion.The dc voltage value that can adapt to as natural arc extinguishing, metal gate sheet arc extinguishing, vacuum extinction is lower and bulky.The bulky cost of self magnetic blow-out bond grid sheet arc extinguishing is very high.Though permanent magnetism arc extinguishing and pressed gas arc extinguishing have improved disjunction voltage than modes such as natural arc extinguishing, vacuum extinctions, and be high not enough.But pressed gas reaches the little and disjunction voltage height of volume in conjunction with the permanent magnetism arc extinguishing, but has the unique shortcoming of the sense of current, can't accomplish the function that forward and reverse electric current is alternately switched on same contactor.
The utility model content
The technical problem that the utility model mainly solves provides a kind of D.C. contactor arc quenching system of electric arc motion in the other direction extinguishing arc of two contacts that can make D.C. contactor, and then realizes the non-polar purpose of main noddle on contactor.Electric arc moves in the opposite direction, and electric arc elongates owing to outwards moving, and reaches the purpose of extinguish arcs.When electric arc moves in the same way and exists when elongating the electric arc may mutual superposition and the phenomenon that is difficult for extinguishing.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of nonpolarity D.C. contactor arc quenching system is provided, comprises moving contact, fixed contact, first permanent magnet, second permanent magnet and the 3rd permanent magnet; Described fixed contact comprises first current terminal, first contact, second contact and second current terminal, and described first current terminal and first contact electrically connect, and described second contact and second current terminal electrically connect; Described moving contact comprises the 3rd contact and the 4th contact, and described the 3rd contact and the 4th contact electrically connect; When the D.C. contactor adhesive, described the 3rd contact and first contact electrically connect, and described the 4th contact and second contact electrically connect; When D.C. contactor disconnected, described the 3rd contact and first contact electrically disconnected, and described the 4th contact and second contact electrically disconnect; Described first permanent magnet, first contact, the 3rd contact, second permanent magnet, second contact, the 4th contact and the 3rd permanent magnet are provided with at interval, and the adjacent pole polarity of first permanent magnet, second permanent magnet and the 3rd permanent magnet is opposite.
Wherein, the N utmost point of described first permanent magnet is away from first contact, the S polarity of first permanent magnet is near first contact, the N of second permanent magnet is extremely near first contact, the S of second permanent magnet is extremely near second contact, extremely near second contact, the S utmost point of the 3rd permanent magnet is away from second contact for the N of the 3rd permanent magnet.
Wherein, the S utmost point of described first permanent magnet is away from first contact, the N polarity of first permanent magnet is near first contact, the S of second permanent magnet is extremely near first contact, the N of second permanent magnet is extremely near second contact, extremely near second contact, the N utmost point of the 3rd permanent magnet is away from second contact for the S of the 3rd permanent magnet.
Wherein, described first permanent magnet, second permanent magnet and the 3rd permanent magnet are flaky magnet (being not limited to shapes such as circle, rectangle, square) and be arranged in parallel.
Wherein, described system also comprises seal casinghousing, and described moving contact, fixed contact, first permanent magnet, second permanent magnet and the 3rd permanent magnet all place in the seal casinghousing.
Wherein, described seal casinghousing inner space is for vacuumizing structure.
Wherein, described seal casinghousing inside is filled with inert gas or hydrogen.
Wherein, described system also comprises seal casinghousing, and described moving contact, fixed contact and second permanent magnet place in the seal casinghousing, and described first permanent magnet and the 3rd permanent magnet place outside the seal casinghousing.
Wherein, described seal casinghousing inner space is for vacuumizing structure.
Wherein, described seal casinghousing inside is filled with inert gas or hydrogen.
The beneficial effects of the utility model are: arc quenching effect was bad after the permanent magnetism magnetic quenching system contact electric current that is different from prior art changed direction, cause probe of contactor that the defective of polarity must be arranged, the utility model is provided with the 3rd permanent magnet between two groups of contacts, cooperate two field regions of formation by the 3rd permanent magnet with first permanent magnet and the 3rd permanent magnet of both sides, two groups of contacts, when the electric arc that the magnetic field that first permanent magnet and second permanent magnet form produces first contact of moving contact pulls to a side, the magnetic field that the 3rd permanent magnet and second permanent magnet form pulls to an opposing side with the electric arc of second contact generation of moving contact, the spray arc direction that has guaranteed the electric arc that two groups of contacts produce is opposite fully, thereby improves arc quenching effect.In addition, the electric arc that existing arc quenching system produces in the time of can only solving a current direction, no matter and of the present utility model be the current direction of contact-second, contact-second, first current terminal-first contact-the 3rd contact-the 4th current terminal, or the current direction of contact-first, contact-first, second current terminal-second contact-the 4th contact-the 3rd current terminal, all can realize arc quenching effect, thereby the contact of contactor polarity not.Like this, electric current enters contactor and still enters contactor from second contact and all can realize two motions that electric arc is opposite from first contact, reach the non-polar purpose of probe of contactor.
Description of drawings
Fig. 1 is the structural representation of the nonpolarity D.C. contactor arc quenching system of the utility model embodiment;
Fig. 2 is the permanent magnet polarity schematic diagram of the nonpolarity D.C. contactor arc quenching system of the utility model embodiment;
Fig. 3 is the permanent magnet polarity schematic diagram of another embodiment of the nonpolarity D.C. contactor arc quenching system of the utility model;
Fig. 4 is the spray arc direction schematic diagram that the positive direction electric current of the nonpolarity D.C. contactor arc quenching system of the utility model embodiment flows into;
Fig. 5 is the spray arc direction schematic diagram that the opposite direction electric current of the nonpolarity D.C. contactor arc quenching system of the utility model embodiment flows into;
Fig. 6 is the structure cutaway view that the D.C. contactor of the utility model arc quenching system is housed.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
See also Fig. 1 and Fig. 6, the utility model is nonpolarity D.C. contactor arc quenching system comprises fixed contact 10, moving contact 11, first permanent magnet 12, second permanent magnet 13 and the 3rd permanent magnet 14; Described fixed contact 10 comprises first current terminal 101, first contact 102, second contact 103 and second current terminal 104, and described first current terminal 101 and first contact 102 electrically connect, and described second contact 103 and second current terminal 104 electrically connect; Described moving contact 11 comprises the 3rd contact 111 and the 4th contact 112, and described the 3rd contact 111 and the 4th contact 112 electrically connect; When the D.C. contactor adhesive, described the 3rd contact 111 and first contact 102 electrically connect, and described the 4th contact 112 and second contact 103 electrically connect; When D.C. contactor disconnected, described the 3rd contact 111 and first contact 102 electrically disconnected, and described the 4th contact 112 and second contact 103 electrically disconnect; Described first permanent magnet 12, first contact 102, second permanent magnet 13, second contact 103 and the 3rd permanent magnet 14 are provided with at interval, and the adjacent pole polarity of first permanent magnet 12, second permanent magnet 13 and the 3rd permanent magnet 14 is opposite.
Arc quenching effect was bad after the permanent magnetism magnetic quenching system contact electric current that is different from prior art changed direction, the electric arc that produces in the time of promptly can only solving a current direction, cause probe of contactor that the defective of polarity must be arranged, the utility model is provided with second permanent magnet 13 between two moving contacts, first permanent magnet 12 and the 3rd permanent magnet 14 are set in the fixed contact both sides, when the electric arc that the magnetic field that first permanent magnet 12 and second permanent magnet 13 form produces first contact 102 and the 3rd contact 111 pulls to a side, the magnetic field that the 3rd permanent magnet 14 and second permanent magnet 13 form pulls to an opposing side with the electric arc that second contact 103 and the 4th contact 112 produce, and guaranteed that the spray arc direction of the electric arc that two groups of contacts produce is opposite fully.No matter of the present utility model is the current direction of the first current terminal 101-, the first contact 102-the 3rd contact 111-the 4th contact 112-, the second contact 103-, second current terminal 104, or the current direction of the second current terminal 104-, the second contact 103-the 4th contact 112-the 3rd contact 111-, the first contact 102-, first current terminal 101, all can realize arc quenching effect, thereby the contact of contactor polarity not.Like this, electric current enters contactor and still enters contactor from second contact and all can realize two motions that electric arc is opposite from first contact, reach the non-polar purpose of probe of contactor.
Referring to Fig. 2, in one embodiment, the N utmost point of described first permanent magnet 12 is away from first contact 102, the S polarity of first permanent magnet 12 is near first contact 102, the N of second permanent magnet 13 is extremely near first contact 102, the S utmost point of extremely close second contact of N 103, the three permanent magnets 14 of extremely close second contact of the S of second permanent magnet 13 103, the three permanent magnets 14 is away from second contact 103.
Referring to Fig. 3, in one embodiment, the S utmost point of described first permanent magnet 12 is away from first contact 102, the N polarity of first permanent magnet 12 is near first contact 102, the S of second permanent magnet 13 is extremely near first contact 102, the N utmost point of extremely close second contact of S 103, the three permanent magnets 14 of extremely close second contact of the N of second permanent magnet 13 103, the three permanent magnets 14 is away from second contact 103.
In one embodiment, described first permanent magnet 12, second permanent magnet 13 and the 3rd permanent magnet 14 are flaky magnet (being not limited to shapes such as circle, rectangle, square) and be arranged in parallel.Certainly, first permanent magnet, second permanent magnet 13 and the 3rd permanent magnet 14 can be other shape, also can not parallelly be provided with, as long as first permanent magnet is identical with the magnetic direction that second permanent magnet 13 and the 3rd permanent magnet 14 produce with the magnetic field that second permanent magnet 13 produces, the electric arc of first contact 102 and the 3rd contact 111, second contact 103 and 112 generations of the 4th contact is gone up arcing in the opposite direction can realize the purpose of this utility model, the contact of contactor is polarity not.
Referring to Fig. 4, with the permanent magnet polarity in scheming is example, when electric current I flowed to and to be the second current terminal 104-, the second contact 103-the 4th contact 112-the 3rd contact 111-, the first contact 102-, first current terminal 101, according to Left Hand Rule, the electric arc EA direction in two magnetic field as shown in Figure 4.
Referring to Fig. 5, with the permanent magnet polarity in scheming is example, when electric current I flowed to and to be the first current terminal 101-, the first contact 102-the 3rd contact 111-the 4th contact 112-, the second contact 103-, second current terminal 104, according to Left Hand Rule, the electric arc EA direction in two magnetic field as shown in Figure 5.
In one embodiment, described system also comprises seal casinghousing 15, and described moving contact 11, fixed contact 10, first permanent magnet 12, second permanent magnet 13 and the 3rd permanent magnet 14 all place in the seal casinghousing 15.Certainly, also can be provided with like this, described fixed contact 10, moving contact 11 and second permanent magnet 13 be placed in the seal casinghousing 15, and described first permanent magnet 12 and the 3rd permanent magnet 14 are placed outside the seal casinghousing 15.
In one embodiment, described seal casinghousing 15 inner spaces are for vacuumizing structure.Vacuumizing structure and can effectively reduce the damage of electric arc in the seal casinghousing 15 to the contact.
In one embodiment, described seal casinghousing 15 inside are filled with hydrogen.In the seal casinghousing 15 be filled with inert gas or hydrogen can effectively reduce the damage of electric arc to the contact.In the present embodiment, fill can be used for behind inert gas or the hydrogen at than High Level DC Voltage (as extinguishing of the electric arc under the situation of 300V～1000V).
Referring to Fig. 6, in one embodiment, described seal casinghousing 15 outsides also surround and are provided with peripheral housing 16, and housing 15 inside are provided with spring 17, and described spring 17 is connected with moving contact 11.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (10)
1. a nonpolarity D.C. contactor arc quenching system is characterized in that: comprise moving contact, fixed contact, first permanent magnet, second permanent magnet and the 3rd permanent magnet;
Described fixed contact comprises first current terminal, first contact, second contact and second current terminal, and described first current terminal and first contact electrically connect, and described second contact and second current terminal electrically connect;
Described moving contact comprises the 3rd contact and the 4th contact, and described the 3rd contact and the 4th contact electrically connect; When the D.C. contactor adhesive, described the 3rd contact and first contact electrically connect, and described the 4th contact and second contact electrically connect; When D.C. contactor disconnected, described the 3rd contact and first contact electrically disconnected, and described the 4th contact and second contact electrically disconnect;
Described first permanent magnet, first contact, the 3rd contact, second permanent magnet, second contact, the 4th contact and the 3rd permanent magnet are provided with at interval, and the adjacent pole polarity of first permanent magnet, second permanent magnet and the 3rd permanent magnet is opposite.
2. nonpolarity D.C. contactor arc quenching system according to claim 1, it is characterized in that: the N utmost point of described first permanent magnet is away from first contact, the S polarity of first permanent magnet is near first contact, the N of second permanent magnet is extremely near first contact, the S of second permanent magnet is extremely near second contact, extremely near second contact, the S utmost point of the 3rd permanent magnet is away from second contact for the N of the 3rd permanent magnet.
3. nonpolarity D.C. contactor arc quenching system according to claim 1, it is characterized in that: the S utmost point of described first permanent magnet is away from first contact, the N polarity of first permanent magnet is near first contact, the S of second permanent magnet is extremely near first contact, the N of second permanent magnet is extremely near second contact, extremely near second contact, the N utmost point of the 3rd permanent magnet is away from second contact for the S of the 3rd permanent magnet.
4. according to each described nonpolarity D.C. contactor arc quenching system of claim 1～3, it is characterized in that: described first permanent magnet, second permanent magnet and the 3rd permanent magnet are flaky magnet (being not limited to shapes such as circle, rectangle, square) and be arranged in parallel.
5. nonpolarity D.C. contactor arc quenching system according to claim 4, it is characterized in that: described system also comprises seal casinghousing, described moving contact, fixed contact, first permanent magnet, second permanent magnet and the 3rd permanent magnet all place in the seal casinghousing.
6. nonpolarity D.C. contactor arc quenching system according to claim 5 is characterized in that: described seal casinghousing inner space is for vacuumizing structure.
7. nonpolarity D.C. contactor arc quenching system according to claim 5 is characterized in that: described seal casinghousing inside is filled with inert gas or hydrogen.
8. nonpolarity D.C. contactor arc quenching system according to claim 4, it is characterized in that: described system also comprises seal casinghousing, described moving contact, fixed contact and second permanent magnet place in the seal casinghousing, and described first permanent magnet and the 3rd permanent magnet place outside the seal casinghousing.
9. nonpolarity D.C. contactor arc quenching system according to claim 8 is characterized in that: described seal casinghousing inner space is for vacuumizing structure.
10. nonpolarity D.C. contactor arc quenching system according to claim 8 is characterized in that: described seal casinghousing inside is filled with inert gas or hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200619051U CN201985041U (en) | 2011-03-10 | 2011-03-10 | Nonpolar direct-current contactor arc extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200619051U CN201985041U (en) | 2011-03-10 | 2011-03-10 | Nonpolar direct-current contactor arc extinguishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201985041U true CN201985041U (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200619051U Expired - Fee Related CN201985041U (en) | 2011-03-10 | 2011-03-10 | Nonpolar direct-current contactor arc extinguishing system |
Country Status (1)
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| CN (1) | CN201985041U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129935A (en) * | 2011-03-10 | 2011-07-20 | 二一三电器深圳有限公司 | Arc quenching system for nonpolar direct current contactor |
| CN104275331A (en) * | 2013-07-08 | 2015-01-14 | Ls产电株式会社 | Cleaning device for contamination of contact of electromagnetic contactor |
| CN104299852A (en) * | 2014-08-25 | 2015-01-21 | 深圳市品川新智科技发展有限公司 | High-voltage direct-current contactor |
| CN104952669A (en) * | 2015-06-30 | 2015-09-30 | 厦门宏发电声股份有限公司 | High-voltage direct-current relay |
| CN104966646A (en) * | 2015-07-03 | 2015-10-07 | 昆山国力真空电器有限公司 | Non-polar DC contactor |
| CN109300742A (en) * | 2018-09-10 | 2019-02-01 | 上海良信电器股份有限公司 | A kind of arc quenching system of D.C. contactor |
| CN111430188A (en) * | 2020-02-28 | 2020-07-17 | 炬恩电气(上海)有限公司 | High-power high-voltage direct-current contactor |
-
2011
- 2011-03-10 CN CN2011200619051U patent/CN201985041U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129935A (en) * | 2011-03-10 | 2011-07-20 | 二一三电器深圳有限公司 | Arc quenching system for nonpolar direct current contactor |
| CN102129935B (en) * | 2011-03-10 | 2013-01-02 | 二一三电器深圳有限公司 | Arc quenching system for nonpolar direct current contactor |
| CN104275331A (en) * | 2013-07-08 | 2015-01-14 | Ls产电株式会社 | Cleaning device for contamination of contact of electromagnetic contactor |
| CN104299852A (en) * | 2014-08-25 | 2015-01-21 | 深圳市品川新智科技发展有限公司 | High-voltage direct-current contactor |
| CN104952669A (en) * | 2015-06-30 | 2015-09-30 | 厦门宏发电声股份有限公司 | High-voltage direct-current relay |
| CN104966646A (en) * | 2015-07-03 | 2015-10-07 | 昆山国力真空电器有限公司 | Non-polar DC contactor |
| CN109300742A (en) * | 2018-09-10 | 2019-02-01 | 上海良信电器股份有限公司 | A kind of arc quenching system of D.C. contactor |
| CN111430188A (en) * | 2020-02-28 | 2020-07-17 | 炬恩电气(上海)有限公司 | High-power high-voltage 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 |
Granted publication date: 20110921 Termination date: 20190310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |