CN102568936A - Contactor capable of having service life prolonged - Google Patents
Contactor capable of having service life prolonged Download PDFInfo
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- CN102568936A CN102568936A CN2012100339098A CN201210033909A CN102568936A CN 102568936 A CN102568936 A CN 102568936A CN 2012100339098 A CN2012100339098 A CN 2012100339098A CN 201210033909 A CN201210033909 A CN 201210033909A CN 102568936 A CN102568936 A CN 102568936A
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Abstract
The invention discloses a contactor capable of having service life prolonged. The contactor comprises an electromagnetic system, a contact system and an arc extinguishing system, wherein the contact system comprises a movable contact and a static contact; the movable contact comprises a movable arc extinguishing contact (5-1) and a movable main contact (5-2) which is connected with the movable arc extinguishing contact (5-1) in parallel; the static contact comprises a static arc extinguishing contact (8-1) and a static main contact (8-2); the static arc extinguishing contact (8-1) and the static main contact (8-2) are connected with each other in parallel or share one static contact board (9); and the open distance between the movable arc extinguishing contact (5-1) and the static arc extinguishing contact (8-1) is less than the open distance between the movable main contact (5-2) and the static main contact (8-2). By using the contactor capable of having service life prolonged, disclosed by the invention, the service life of the contactor can be prolonged; moreover, the maintenance workload of the contactor can be reduced; and because no electric arc is generated in the main contactor so that no electric wear is caused, the thickness of silver alloy can be largely reduced so that the cost is saved.
Description
Technical field
The present invention relates to a kind of contactor, be specifically related to a kind of contactor that increases the service life.
Background technology
At present the arc quenching method of contactor is modes such as metal gate sheet arc extinguishing, magnetic quenching, vacuum extinction, though these arc quenching methods all are arc quenching methods preferably, can't stop the electrical wear of contact.The contactor of big electric current particularly, because electrical wear is more serious, so electric life is all not long, under the mechanical endurance of contactor body also very long situation, contactor can not use, and causes the waste of contactor body.In order to prolong the useful life of contactor, producer generally adopts the method for changing probe of contactor, and changing contact will dismantle the connection lead on the one hand; Cumbersome; Contact is changed the restriction of the examined equipment in back on the other hand, can not be with its parameter adjustment to optimum state, so effect is also not ideal.
Summary of the invention
To the deficiency that prior art exists, the object of the invention provides a kind of contactor that increases the service life.
To achieve these goals, the present invention realizes through following technical scheme:
The present invention includes electromagnetic system, contact system and arc quenching system; Contact system comprises moving contact and fixed contact; Moving contact comprises moving arcing contact and the moving main contact parallelly connected with moving arcing contact; Fixed contact comprises quiet arcing contact and quiet main contact, the parallel with one another or shared same static contact panel of quiet arcing contact and quiet main contact; Opening apart from less than the distance of moving between main contact and the quiet main contact of opening between moving arcing contact and the quiet arcing contact.
Arcing contact of the present invention is connected prior to main contact, and the back is in the main contact disjunction, and electric arc produces on arcing contact, does not produce electric arc on the main contact.The electric arc that produces on the arcing contact is extinguished by arc quenching system, and arc quenching system adopts traditional arc quenching method.
Traditional contact should guarantee the arc extinguishing ability, guarantees making capacity again.And the present invention is these the two kinds of functional separations with existing main contact.Arcing contact is used for arc extinguishing, and main contact is used for connecting.Arcing contact design the time need consider breaking capacity and with the cooperation (cooperation of arcing contact and arc quenching system is a prior art, repeats no more here) of arc quenching system, also considered is changed conveniently, and need not consider temperature rise.Main contact is only considered making capacity and temperature rise when design, and need not consider the arc extinguishing problem.Because main contact does not produce electric arc, thereby has improved the useful life of contactor.
The present invention can be according to the frequency of operation of contactor, and the periodic replacement arcing contact when changing arcing contact, need not dismounting and connects lead, and the main contact parameter does not change, so contactor need not to test again, has reduced the workload that contactor is safeguarded.The periodic replacement arcing contact has just further improved the useful life of contactor.
Above-mentioned moving arcing contact what touch that bridge adopts is elasticity phosphorus bronze sheet preferably, the material that adopt the contact of moving arcing contact is the copper-tungsten of anti-electric arc.Because phosphorus bronze sheet is just connected big electric current in several milliseconds of connecting with moment of disjunction, so phosphorus bronze sheet can not produce high heat, just normal heating and do not influence elasticity, the making of like this moving arcing contact is just fairly simple, and installation and replacing are also very convenient.The useful life that the contact of moving arcing contact adopts the copper-tungsten of anti-electric arc also to improve contactor.
Above-mentioned moving main contact what touch that bridge adopts is copper plate, the material that adopt the contact of moving main contact is the silver alloy that conducts electricity very well.
The present invention not only can improve the useful life of contactor, and can reduce the maintenance workload of contactor; Because main contact of the present invention do not produce electric arc, thus do not have electrical wear, so silver alloy thickness can significantly reduce, thereby practiced thrift cost.
Description of drawings
Fig. 1 is the front view of one embodiment of the invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 removes the vertical view behind the arc-extinguish chamber for Fig. 1.
Each label among the figure: arc-extinguish chamber 1, upper casing 2, lower casing 3, moving part 4, moving arcing contact 5-1, moving main contact 5-2; Sensitive switch 6, contact pressure spring 7, quiet arcing contact 8-1, quiet main contact 8-2, static contact panel 9; Arm 10, moving iron 11, quiet iron 12, coil 13, counter-force spring 14.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with embodiment, further set forth the present invention.
Referring to Fig. 1, Fig. 2 and Fig. 3, existing is example with an one pole contactor, and contactor comprises housing and the electromagnetic system, contact system and the arc quenching system that are installed in the housing.Electromagnetic system, contact system and arc quenching system all are sealed in the housing, can accomplish dustproof fully.
In the present embodiment; Housing comprises arc-extinguish chamber 1, upper casing 2 and the lower casing 3 that is installed in the top; Be provided with binding post (not marking among the figure) in the outside of upper casing 2, lower casing 3 bottoms are through bolster (not marking among the figure) sealing, and present embodiment adopts the damping rubber gasket sealing; Upper casing 2 seals through dust guard with arc-extinguish chamber 1, and present embodiment adopts the sealing of case dustproof gasket.
In the present embodiment; Contact system comprises moving part 4, be installed in moving part 4 upper ends moving arcing contact 5-1 and moving main contact 5-2 parallelly connected with moving arcing contact 5-1, be arranged on moving part 4 both sides sensitive switch 6 (connect normally opened contact, be installed on the upper casing 2), be arranged on moving arcing contact 5-1 and move contact pressure spring 7 and quiet arcing contact 8-1 and the quiet main contact 8-2 above the main contact 5-2.Opening apart from less than the distance of moving between main contact 5-2 and the quiet main contact 8-2 of opening between moving arcing contact 5-1 and the quiet arcing contact 8-1.Moving arcing contact 5-1 and moving main contact 5-2 can realize reliable parallel connection under the effect of contact pressure spring 7.
In the present embodiment, the shared same static contact panel 9 of quiet arcing contact 8-1 and quiet main contact 8-2, static contact panel 9 is fixed on the upper casing 2.
In the present embodiment, on lower casing 3, be provided with pillar (not marking among the figure), sensitive switch 6 supports the location through pillar.Be provided with two arms 10 with sensitive switch 6 corresponding positions on the moving part 4; Make moving part 4 when moving up and down, can touch sensitive switch 6; Make its contact be in closure state; And sensitive switch 6 and main contact (moving main contact 5-2 with quiet main contact 8-2 disconnection and closure) can synchronization actions, and sensitive switch 6 is connected with binding post through lead (not drawing among the figure).
Wherein, moving arcing contact 5-1 what touch that bridge adopts is elasticity phosphorus bronze sheet preferably, the material that adopt the contact of moving arcing contact 5-1 is the copper-tungsten of anti-electric arc, has improved the useful life of contactor.
Wherein, moving main contact 5-2 what touch that bridge adopts is copper plate, the material that adopt the contact of moving main contact 5-2 is the silver alloy that conducts electricity very well.
In the present embodiment; Electromagnetic system comprise the E font that is fixed on moving part 4 belows moving iron 11, be installed in the lower casing 3 with the quiet iron 12 of the moving iron 11 corresponding E fonts of E font and be fixed on the coil 13 on the quiet iron 12 of E font, draw wiring through lug plate (not drawing among the figure).The centre of the quiet iron 12 of E font and the moving iron 11 of E font is equipped with counter-force spring 14; Counter-force spring 14 can be so that in the time of quiet iron 12 adhesives of the moving iron of E font 11 and E font, and the elastic force that the moving iron 11 of E font overcomes counter-force spring 14 counter-force spring 14 when separating gives the elastic force of the moving iron 11 of E font.The moving iron 11 of E font is identical with the distance of corresponding sensitive switch 6 with the distance and the arm 10 of the quiet iron 12 of E font.
When power supply is given coil 13 energisings through aforesaid lug plate; The quiet iron 12 of E font produces electromagnetic attraction; The moving iron 11 of E font overcomes the elastic force of counter-force spring 14, to quiet iron 12 motions of E font, because the moving iron 11 of E font is fixedly connected with moving part 4; So moving part 4 is followed the moving iron 11 of E font and is moved downward; Again because moving arcing contact 5-1 and moving main contact 5-2 are installed in the upper end of moving part 4, and opening apart from less than the distance of opening between moving main contact 5-2 and the quiet main contact 8-2 between moving arcing contact 5-1 and the quiet arcing contact 8-1, contact with quiet arcing contact 8-1 so move arcing contact 5-1 elder generation.Since moving arcing contact 5-1 what touch that bridge adopts is elasticity phosphorus bronze sheet preferably, under the suction-combining force effect of contactor, phosphorus bronze sheet produces deformation, can not stop moving main contact 5-2 and quiet main contact 8-2 closure, but electric arc is born by arcing contact.On moving part 4, be respectively equipped with arm 10 with sensitive switch 6 corresponding positions, when moving part 4 moves to certain position, sensitive switch 6 and main contact synchronization action; Arm 10 touches sensitive switch 6; Make the closing of contact of sensitive switch 6, control circuit external, and moving main contact 5-2 and quiet main contact 8-2 contact thereby sensitive switch 6 connects binding post through lead; The closing of contact, thereby control load.
When coil 13 outages, the electromagnetic attraction of the quiet iron 12 of E font disappears, and relies on the reaction force of counter-force spring 14; Make the moving iron 11 of E font separate with the quiet iron 12 of E font, moving part 4 moves upward, because moving main contact 5-2 and quiet main contact 8-2 break off earlier; Break off behind moving arcing contact 5-1 and the quiet arcing contact 8-1; So electric arc still bears (to that is to say no matter be that contactor is connected or during disjunction, the electric arc of generation is born by arcing contact, main contact does not produce electric arc by arcing contact.), the contact is broken off, and stops the control to load, and the contact of sensitive switch 6 becomes disconnection by closure simultaneously, thereby breaks off outside circuit control.
Because will consider electrical wear, its silver layer is thicker during fabrication for traditional main noddle on contactor, and the consumption silver amount of the triple pole contactor of a 50A is about about 15g, and silver-colored valency calculates by per 6000 yuan/KG, needs 90 yuan.
The average unit cost increase of a 50A triple pole contactor installation arcing contact is about about 12 yuan, and main contact is that its silver thickness can reduce 70% because do not consider arc extinguishing and electrical wear in manufacturing, can reduce 90 yuan * 70%=63 unit with silver-colored cost.So the contactor manufacturing cost can reduce 63 yuan-12 yuan=51 yuan.The electric current of contactor is big more, and the cost of saving is many more.China needs the above contactor of 50A to be about 1,000 ten thousand every year, by 51 yuan of calculating of every average saving, can practice thrift 1,000 ten thousand * 51 yuan=5.1 hundred million.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.
Claims (3)
1. the contactor that can increase the service life comprises electromagnetic system, contact system and arc quenching system, and said contact system comprises moving contact and fixed contact, it is characterized in that,
Said moving contact comprises moving arcing contact (5-1) and the moving main contact (5-2) parallelly connected with moving arcing contact (5-1); Said fixed contact comprises quiet arcing contact (8-1) and quiet main contact (8-2), said quiet arcing contact (8-1) and the parallel with one another or shared same static contact panel of quiet main contact (8-2) (9);
Opening apart from less than the distance of opening between moving main contact (5-2) and the quiet main contact (8-2) between said moving arcing contact (5-1) and the quiet arcing contact (8-1).
2. the contactor that increases the service life according to claim 1 is characterized in that, said moving arcing contact (5-1) what touch that bridge adopts is elasticity phosphorus bronze sheet preferably, the material that adopt the contact of moving arcing contact (5-1) is the copper-tungsten of anti-electric arc.
3. the contactor that increases the service life according to claim 1 is characterized in that, said moving main contact (5-2) what touch that bridge adopts is copper plate, the material that adopt the contact of moving main contact (5-2) is the silver alloy that conducts electricity very well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100339098A CN102568936A (en) | 2012-02-15 | 2012-02-15 | Contactor capable of having service life prolonged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100339098A CN102568936A (en) | 2012-02-15 | 2012-02-15 | Contactor capable of having service life prolonged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102568936A true CN102568936A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100339098A Pending CN102568936A (en) | 2012-02-15 | 2012-02-15 | Contactor capable of having service life prolonged |
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| CN (1) | CN102568936A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158515A (en) * | 2016-07-15 | 2016-11-23 | 浙江宏舟新能源科技有限公司 | A kind of HVDC relay of band microswitch |
| CN106409616A (en) * | 2015-07-31 | 2017-02-15 | Ls产电株式会社 | High voltage relay device |
| CN106683951A (en) * | 2015-11-10 | 2017-05-17 | 利萨·德雷克塞迈尔有限责任公司 | Electromechanical protective switch |
| CN111430169A (en) * | 2020-05-09 | 2020-07-17 | 沈鼎力 | Asynchronous utensil switch of contact group break-make |
| CN111986949A (en) * | 2020-07-22 | 2020-11-24 | 国网内蒙古东部电力有限公司电力科学研究院 | Isolating load switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3834155A1 (en) * | 1988-10-07 | 1990-04-12 | Licentia Gmbh | Moving contact link for an air-cored contactor |
| JP2003293913A (en) * | 2002-04-03 | 2003-10-15 | Denso Corp | Magnet switch |
| CN201549396U (en) * | 2009-11-13 | 2010-08-11 | 卓灵智能(深圳)有限公司 | Double contact structure for electric connection and relay thereof |
| CN202487501U (en) * | 2012-02-15 | 2012-10-10 | 南京全宁电器有限公司 | Contactor with service life capable of being prolonged |
-
2012
- 2012-02-15 CN CN2012100339098A patent/CN102568936A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3834155A1 (en) * | 1988-10-07 | 1990-04-12 | Licentia Gmbh | Moving contact link for an air-cored contactor |
| JP2003293913A (en) * | 2002-04-03 | 2003-10-15 | Denso Corp | Magnet switch |
| CN201549396U (en) * | 2009-11-13 | 2010-08-11 | 卓灵智能(深圳)有限公司 | Double contact structure for electric connection and relay thereof |
| CN202487501U (en) * | 2012-02-15 | 2012-10-10 | 南京全宁电器有限公司 | Contactor with service life capable of being prolonged |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409616A (en) * | 2015-07-31 | 2017-02-15 | Ls产电株式会社 | High voltage relay device |
| CN106409616B (en) * | 2015-07-31 | 2018-09-21 | Ls产电株式会社 | High pressure relay |
| CN106683951A (en) * | 2015-11-10 | 2017-05-17 | 利萨·德雷克塞迈尔有限责任公司 | Electromechanical protective switch |
| CN106683951B (en) * | 2015-11-10 | 2019-03-08 | 利萨·德雷克塞迈尔有限责任公司 | Mechanical and electrical protection switch |
| CN106158515A (en) * | 2016-07-15 | 2016-11-23 | 浙江宏舟新能源科技有限公司 | A kind of HVDC relay of band microswitch |
| CN106158515B (en) * | 2016-07-15 | 2019-05-28 | 浙江宏舟新能源科技有限公司 | A kind of high voltage direct current relay with microswitch |
| CN111430169A (en) * | 2020-05-09 | 2020-07-17 | 沈鼎力 | Asynchronous utensil switch of contact group break-make |
| CN111430169B (en) * | 2020-05-09 | 2022-06-10 | 浙江赫灵电气有限公司 | Asynchronous utensil switch of contact group break-make |
| CN111986949A (en) * | 2020-07-22 | 2020-11-24 | 国网内蒙古东部电力有限公司电力科学研究院 | Isolating load switch |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |