CN201946516U - Multi-pole small-sized direct current contactor - Google Patents
Multi-pole small-sized direct current contactor Download PDFInfo
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- CN201946516U CN201946516U CN2011200056935U CN201120005693U CN201946516U CN 201946516 U CN201946516 U CN 201946516U CN 2011200056935 U CN2011200056935 U CN 2011200056935U CN 201120005693 U CN201120005693 U CN 201120005693U CN 201946516 U CN201946516 U CN 201946516U
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Abstract
The utility model provides a multi-pole small-sized direct current contactor which overcomes the defects of the big volume and low working voltage of the prior art. The small-sized multi-pole direct current contactor comprises an upper base, a base, a contact system and the like and has the technical key points that: a permanent magnet which serves as a magnetic blowout arc extinguishing element is arranged at the middle part of a stopper; a wide voltage component and a cover plate are also arranged at one end of the base in an electromagnetic mechanism; the wide voltage component comprises a circuit board and an automatic conversion and control circuit, wherein the control switch take a normally closed contact consisting of a static contact and a movable contact as a control switch to connect with a power supply input end and a coil; and the normally closed contact is arranged on the circuit board, and the automatic conversion and control circuit is composed of an alternating current control circuit and a direct current control circuit. The multi-pole small-sized direct current contactor has the advantages of reasonable design, compact structure, smaller volume, small switch-on/off arc and safe and reliable contact of the contact; the working voltage can be improved to 600V even kilovolt; the working current can reach 6 to 12 amperes; therefore, the use performance of the contactor is obviously improved so as to meet the requirements of the development of clean energy sources.
Description
Technical field
The utility model relates to a kind of low-voltage electrical apparatus switch, particularly a kind of multipole small-size D.C. contactor that utilizes wide voltage assembly and permanent magnet as the magnetic quenching element.Be mainly used in the industrial automation field as the startup of small-sized DC motor, stop, the control of small-sized DC electromagnet, vacuum contactor dc coil, the connection and the disjunction of the lubricating system in power plant and luminous energy, wind power generation converter system high-capacity direct current contactor.
Background technology
Existing D.C. contactor is widely used in the break-make etc. of the D.C. contactor of automatic field, power plant, small-sized DC motor, DC electromagnet and large-scale converter system.In China Patent No. 95232261.7 " Novel DC contactor ", 200920159408.8 " bipolar strong arc extinguishing D.C. contactor " and 200420063210.7 " bipolar DC contactor "; adopted permanent magnet arc extinguishing technology; permanent magnet is arranged on dynamic formula bridge type main contact and fixed contact below; the bottom of arc control device; described permanent magnet is in the high-temperature region that produces electric arc, and unshielded permanent magnet can demagnetize gradually.Because of existing public technology product operating voltage mostly is DC250V greatly, minimum current 40 peaces, volume is big again, in actual the use because the product that does not match, can only be little with big generation, produce cost waste, economy is very poor.Particularly clean energy resource such as wind power generation, solar power generation development is in recent years controlled the connection and the disjunction of high-capacity direct current contactor rapidly, is starved of small-sized multipole D.C. contactor.
The utility model content
The purpose of this utility model provides a kind of multipole small-size D.C. contactor, the volume that it has solved the prior art existence is big, the defective that operating voltage is low, it is reasonable in design, compact conformation, volume is less, the contact breaking arc is little, touch-safe is reliable, and can improve operating voltage is extremely kilovolt level of 600V, and operating current reaches 6 to 12 amperes, thereby significantly improve the serviceability of contactor, to satisfy the needs of clean energy resource development.
The technical scheme that the utility model adopted is: this multipole small-size D.C. contactor comprises top base and base, contact system pass through the normally closed auxiliary fixed contact that the terminals direction board is fixed on described top base upper strata, often open auxiliary fixed contact, be fixed on the main fixed contact of described top base lower floor by block piece, respectively by the contact supporter, guide and touch spring are fixed on and described master, the bridge type main contact and the auxiliary moving contact of auxilliary fixed contact opposite position, the buffer stopper that is assembled in described contact supporter lower end by back-moving spring and spring base support, armature and connecting plate, be arranged in the described base by yoke, coil, buffer spring, the electromagnetic mechanism that buffer board and adjusting pad are formed, its technical essential is: the permanent magnet that is provided as the magnetic quenching element at described block piece middle part, described electromagnetic mechanism also is provided with wide voltage assembly and cover plate at an end of described base, and described wide voltage assembly comprises wiring board and is provided with on described wiring board by fixed contact, the normally closed interlock that moving contact is formed connects the automatic conversioning controling circuit of power input and coil as control switch; Described automatic conversioning controling circuit is made of AC control circuit and DC control circuit, described AC control circuit comprises the built-in excess voltage suppressor that is made of capacitor C 1 and resistance R 1 that is connected ac power input end, the circuit that connects into by bridge rectifier and described coil by described normally closed interlock, the circuit that connects into by bridge rectifier and coil by energy-conservation capacitor C 2 and current-limiting resistance R2; Described DC control circuit comprises the piezo-resistance that is connected dc supply input, the coil freewheeling circuit of forming by diode D5, D6, circuit by the actuating coil QX in described normally closed interlock and the described coil connects into is connected in series the circuit that the actuating coil QX in back and the described coil connects into by the hold-in winding BX in current-limiting resistance R2 and the described coil.
The polarity that is fixed on the permanent magnet in the described block piece is distributed as: the polarity of first utmost point permanent magnet is N-S; The polarity of second utmost point permanent magnet is S-N; The polarity of the 3rd utmost point and four-pole permanent magnet body is respectively with first utmost point and second utmost point.Positive source is connected with first utmost point end of incoming cables.
The described current-limiting resistance R2 that is provided with in the wide voltage assembly of described base one end is a metalfilmresistor, and described energy-conservation capacitor C 2 adopts the AC275V AC capacitor or adopts two AC275V AC capacitor series connection.
Advantage and the good effect that the utlity model has are: because the utility model adopts the contact room of the contact system that is assembled in top base to replace arc control device, so saved the arc control device volume; Permanent magnet is as the magnetic quenching element on the baffle plate because of utilization is installed in, and electric arc is little when making the contact disjunction, and the contact wearing and tearing are little, so touch-safe is reliable, and long service life; Electromagnetic mechanism also adopts wide voltage power supply assembly in addition, utilizes wide voltage power-saving technology, makes the alternating current operation magnetic system, there is not noise during work, energy-saving effect is remarkable, and coil temperature rise is low, makes the dc operation electromagnetic mechanism small-sized, reach the dc operation electromagnetic mechanism and the alternating current operation electromagnetic mechanism is measure-alike, therefore, this multipole small-size D.C. contactor is reasonable in design, and structure is compact more, volume is very little, can improve operating voltage is extremely kilovolt level of 600V, and operating current reaches 6 to 12 amperes.The utility model adopts multipole control, and contactor outage back loading is as safe as a house, thereby significantly improves the serviceability of contactor, to satisfy the needs of clean energy resource development.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a kind of concrete structure schematic diagram of the present utility model;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is a coil AC control circuit schematic diagram;
Fig. 4 is a coil DC control circuit schematic diagram.
Sequence number explanation among the figure: 1 base; 2 top bases; 3 often open main fixed contact; 4 bridge type main contacts; 5 touch springs; 6 contact supporters; 7 guides; 8 auxiliary moving contacts; 9 normally closed auxiliary fixed contacts; 10 terminals direction boards; 11 often open auxiliary fixed contact; 12 block pieces; 13 permanent magnets; 14 buffer stoppers; 15 connecting plates; 16 back-moving springs; 17 armature; 18 coils; 19 spring bases; 20 buffer springs; 21 buffer boards; 22 yokes; 23 adjusting pads; 24 limited parts; 25 springs; 26 push rods; 27 capacitor C 1; 28 resistance R 1; 29 energy-conservation capacitor C 2; 30 current-limiting resistance R2; 31 wiring boards; 32 cover plates; 33 fixed contacts; 34 moving contacts; 35 touch springs; 36 diode D1 ~ D4; 37 reaction springs; piezo-resistance RV; protection diode D5; sustained diode 6.
Embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1～4.This multipole small-size D.C. contactor comprises top base 2, base 1 and assembles its interior contact system and electromagnetic mechanism.Wherein the normally closed auxiliary fixed contact 9 of contact system, often open auxiliary fixed contact 11 and be fixed on top base 2 upper stratas by terminals direction board 10, often open main fixed contact 3 and be fixed on the lower floor of top base 2, be provided as the permanent magnet 13 of magnetic quenching element at the middle part of block piece 12 by block piece 12.Bridge type main contact 4, auxiliary moving contact 8 are fixed on auxiliary fixed contact 11 opposite positions with main fixed contact 3, normally closed auxiliary fixed contact 9 and Chang Kai by contact supporter 6, guide 7 and touch spring 5 respectively.The buffer stopper 14, armature 17 and the connecting plate 15 that are assembled in contact supporter 6 lower ends are supported by back-moving spring 16 and spring base 19.Two back-moving springs 16 are placed on the Cylinder of contact supporter 6, and the other end of back-moving spring 16 is placed on the spring base 19, and adjusting pad 23 pads are below yoke 22.And limited part 24 is set and spring 25 is installed as track.Be arranged on the electromagnetic mechanism of being made up of yoke 22, coil 18, buffer spring 20, buffer board 21 and adjusting pad 23 in the base 1, electromagnetic mechanism also is provided with wide voltage assembly and cover plate 32 at an end of base 1.Wide voltage assembly comprises wiring board 31 and the normally closed interlock of being made up of fixed contact 33, moving contact 34 connects power input and coil 18 as control switch automatic conversioning controling circuit is set on wiring board 31.Automatic conversioning controling circuit is made of AC control circuit and DC control circuit.Wherein AC control circuit comprise be connected ac power input end by electric capacity 27(C1) and resistance 28(R1) the built-in excess voltage suppressor Y1 that constitutes; The circuit that bridge rectifier and the coil 18 of the normally closed interlock of being made up of fixed contact 33, moving contact 34 by diode 36(D1 ~ D4) form connects into; By energy-conservation electric capacity 29(C2) and current-limiting resistance 30(R2) circuit that connects into by above-mentioned bridge rectifier and coil 18.Coil 18 in the DC control circuit is divided into hold-in winding BX and actuating coil QX.This DC control circuit comprises the piezo-resistance RV that is connected dc supply input, by the coil freewheeling circuit of protecting diode D5, sustained diode 6 to form; The circuit that normally closed interlock of being made up of fixed contact 33, moving contact 34 and the actuating coil QX in the coil 18 connect into is by current-limiting resistance 30(R2) and coil 18 in the circuit that connects into of hold-in winding BX serial connection back and actuating coil QX in the coil 18.
Present embodiment is four utmost point D.C. contactors.Wherein two block pieces 12 are fixed eight respectively and are often opened 3, eight permanent magnets 13 of main fixed contact and be inserted in respectively in the cavity of two block pieces 12.The polarity of eight permanent magnets 13 is distributed as: the polarity of first utmost point permanent magnet 13 is N-S, and the polarity of second utmost point permanent magnet 13 is S-N, and the polarity of the 3rd utmost point permanent magnet 13 is N-S, and the polarity of four-pole permanent magnet body 13 is S-N.Positive source is connected with first utmost point end of incoming cables.The current-limiting resistance R2 that is provided with in the wide voltage assembly of base one end can adopt metalfilmresistor.Energy-conservation electric capacity 29(C2) can adopt AC275V AC capacitor or adopt the series connection of two AC275V AC capacitor.
The main circuit of this multipole small-size D.C. contactor is often opened main fixed contact 3 through input and is inserted, and often opens main fixed contact 3 through bridge type main contact 4 to output and is wired to load, the connection and the disjunction of control main circuit.Control circuit signal power source one end coils 18 terminals of this multipole small-size D.C. contactor insert, through fixed contact 33, moving contact 34, fixed contact 33 to rectifier bridge, coil windings to the signal power source other end, the switching of control coil circuit.
The operation principle of this multipole small-size D.C. contactor: when coil 18 energisings produce magnetic field, magnetic flux returns yoke 22 by yoke 22 to armature 17, form closed magnetic path and produce suction, drive armature 17, contact supporter 6, the counter-force that overcomes back-moving spring 16 is inhaled to yoke 22, and until closure, contact supporter 6 drives bridge type main contact 4 and opens main fixed contact 3 directions motion to often, until connection, realize the circuit connection.When main circuit was connected, armature 17 end bossy bodies drove push rod 26 motions in the wide voltage assembly, make moving contact 34 and fixed contact 33 disjunctions, with energy-conservation capacitor C 2, current-limiting resistance R2 switch-on coil circuit, reach energy-conservation purpose.When coil 18 outages, electromagnetic attraction disappears, kinematic system is under the counter-force effect, make bridge type main contact 4 to resetting direction motion, and often open main fixed contact 3 disjunctions, produce electric arc, under permanent magnet 13 the action of a magnetic fields, electric arc is blown out outside pedestal 2 fast, electric arc is elongated, cools off arc extinguishing, realize the circuit disjunction.Meanwhile, armature 17 end bossy bodies leave wide voltage assembly, and reaction spring 37 runs back push rod 26, drive moving contact 34 and connect with fixed contact 33, for coil 18 energisings are next time got ready.
Claims (3)
1. multipole small-size D.C. contactor, comprise top base and base, contact system pass through the normally closed auxiliary fixed contact that the terminals direction board is fixed on described top base upper strata, often open auxiliary fixed contact, be fixed on the main fixed contact of described top base lower floor by block piece, respectively by the contact supporter, guide and touch spring are fixed on and described master, the bridge type main contact and the auxiliary moving contact of auxilliary fixed contact opposite position, the buffer stopper that is assembled in described contact supporter lower end by back-moving spring and spring base support, armature and connecting plate, be arranged in the described base by yoke, coil, buffer spring, the electromagnetic mechanism that buffer board and adjusting pad are formed, it is characterized in that: the permanent magnet that is provided as the magnetic quenching element at described block piece middle part, described electromagnetic mechanism also is provided with wide voltage assembly and cover plate at an end of described base, and described wide voltage assembly comprises wiring board and is provided with on described wiring board by fixed contact, the normally closed interlock that moving contact is formed connects the automatic conversioning controling circuit of power input and coil as control switch; Described automatic conversioning controling circuit is made of AC control circuit and DC control circuit, described AC control circuit comprises the built-in excess voltage suppressor that is made of capacitor C 1 and resistance R 1 that is connected ac power input end, the circuit that connects into by bridge rectifier and described coil by described normally closed interlock, the circuit that connects into by bridge rectifier and coil by energy-conservation capacitor C 2 and current-limiting resistance R2; Described DC control circuit comprises the piezo-resistance that is connected dc supply input, the coil freewheeling circuit of forming by diode D5, D6, circuit by the actuating coil QX in described normally closed interlock and the described coil connects into is connected in series the circuit that the actuating coil QX in back and the described coil connects into by the hold-in winding BX in current-limiting resistance R2 and the described coil.
2. multipole small-size D.C. contactor according to claim 1 is characterized in that: the polarity that is fixed on the permanent magnet in the described block piece is distributed as: the polarity of first utmost point permanent magnet is N-S; The polarity of second utmost point permanent magnet is S-N; With first utmost point and second utmost point, positive source is connected with first utmost point end of incoming cables polarity of the 3rd utmost point and four-pole permanent magnet body respectively.
3. multipole small-size D.C. contactor according to claim 1, it is characterized in that: the described current-limiting resistance R2 that is provided with in the wide voltage assembly of described base one end is a metalfilmresistor, and described energy-conservation capacitor C 2 adopts the AC275V AC capacitor or adopts two AC275V AC capacitor series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200056935U CN201946516U (en) | 2011-01-11 | 2011-01-11 | Multi-pole small-sized direct current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200056935U CN201946516U (en) | 2011-01-11 | 2011-01-11 | Multi-pole small-sized direct current contactor |
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| Publication Number | Publication Date |
|---|---|
| CN201946516U true CN201946516U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200056935U Expired - Lifetime CN201946516U (en) | 2011-01-11 | 2011-01-11 | Multi-pole small-sized direct current contactor |
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| CN (1) | CN201946516U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262980A (en) * | 2011-01-11 | 2011-11-30 | 沈阳二一三控制电器制造有限公司 | Multi-pole direct current contactor |
| CN105869956A (en) * | 2016-06-21 | 2016-08-17 | 沈阳二三控制电器制造有限公司 | Contact supporting assembly of direct-current contactor |
| CN108573831A (en) * | 2017-03-14 | 2018-09-25 | 施耐德电器工业公司 | Low-power consumption alternating current-direct current expansion module for A.C. contactor |
| CN109545616A (en) * | 2018-12-29 | 2019-03-29 | 昆山瑞普电气有限公司 | Microminiature single phase ac high-pressure vacuum contactor |
| CN110199372A (en) * | 2017-02-01 | 2019-09-03 | 赛峰电气与电源公司 | Auxiliary switch |
-
2011
- 2011-01-11 CN CN2011200056935U patent/CN201946516U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262980A (en) * | 2011-01-11 | 2011-11-30 | 沈阳二一三控制电器制造有限公司 | Multi-pole direct current contactor |
| CN102262980B (en) * | 2011-01-11 | 2013-05-15 | 沈阳二一三控制电器制造有限公司 | Multi-pole direct current contactor |
| CN105869956A (en) * | 2016-06-21 | 2016-08-17 | 沈阳二三控制电器制造有限公司 | Contact supporting assembly of direct-current contactor |
| CN110199372A (en) * | 2017-02-01 | 2019-09-03 | 赛峰电气与电源公司 | Auxiliary switch |
| CN110199372B (en) * | 2017-02-01 | 2021-09-17 | 赛峰电气与电源公司 | Auxiliary switch |
| CN108573831A (en) * | 2017-03-14 | 2018-09-25 | 施耐德电器工业公司 | Low-power consumption alternating current-direct current expansion module for A.C. contactor |
| CN108573831B (en) * | 2017-03-14 | 2021-01-22 | 施耐德电器工业公司 | Low-power-consumption AC/DC extension module for AC contactor |
| CN109545616A (en) * | 2018-12-29 | 2019-03-29 | 昆山瑞普电气有限公司 | Microminiature single phase ac high-pressure vacuum contactor |
| CN109545616B (en) * | 2018-12-29 | 2024-02-27 | 昆山瑞普电气有限公司 | Ultra-small single-phase alternating-current high-voltage vacuum contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20130515 |
|
| RGAV | Abandon patent right to avoid regrant |