CN201936816U - Multipolar direct-current contactor - Google Patents
Multipolar direct-current contactor Download PDFInfo
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- CN201936816U CN201936816U CN2011200057073U CN201120005707U CN201936816U CN 201936816 U CN201936816 U CN 201936816U CN 2011200057073 U CN2011200057073 U CN 2011200057073U CN 201120005707 U CN201120005707 U CN 201120005707U CN 201936816 U CN201936816 U CN 201936816U
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- arc
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Abstract
A multipolar direct-current contactor resolves the problems of oversize and excess electric energy consumption by a magnet coil in the prior art, and comprises a magnetic mechanism, an arc extinguish chamber and a contact system. The technical scheme includes that a power assisting device fixed on a bottom plate is further arranged on the magnetic mechanism and comprises a power assisting magnet, a copper screw, a magnetism partition pad, a guide rod, springs and a guide seat. Two magnetism guide plates or thick magnetism guide plates are respectively inserted into two side walls of a contact room of the arc extinguish chamber corresponding to arc generating positions, a permanent magnet covered by a heat insulating sleeve is arranged between the two magnetism guide plates, and two ends of the permanent magnet are respectively connected with the magnetism guide plates in a seamlessly attracted manner. A bridge type contact is fixed to a contact supporting part which is supported by a contact spring and a reaction spring. The multipolar direct-current contactor is reasonable in design, compact in structure and small in size, the contact is stable in operation and safe and reliable in contacting, and the rated operational voltage of the direct-current contactor is remarkably increased to kilo-voltage level, so that requirement of rated operational voltage increasing of electric buses in public transportation can be met.
Description
Technical field
The utility model relates to a kind of low-voltage electrical apparatus switch contact, particularly a kind of multipole D.C. contactor that adopts the arc-control device of interior permanent magnets magnetic quenching structure.It is mainly used in public transport and reaches kilovolt place of level with rated operational voltages such as electric motor coach, luminous energy, wind energies.
Background technology
Existing D.C. contactor is widely used in Electric Traction, and its kind is more, but mostly is 2 normally open contacts greatly, and the power supply that is mainly used in places such as industrial and mineral traction locomotive, power plant, power engineering and automation switches forward and reverse change-over circuit control.General one pole (1P) arc control device have a contact room, and the two poles of the earth (2P) has two contact rooms, four contact rooms are arranged to four utmost points (4P), by the same arc control device that these contact rooms are combined into, are referred to as multipole arc control device.Traditional D.C. contactor mainly comprises contact system, potter's clay arc control device, base plate and the superincumbent beating type electromagnet of the assembling mechanism of series current coil single-break.Still be connected in the main circuit aspect the arc extinguishing at the traditional current coil of application, when dividing deenergizing, utilize the magnetic blow-out of series current coil, electric arc is introduced huge labyrinth type arc control device arc extinguishing, for example China Patent No. is " D.C. contactor arc-control device " and " D.C. contactor composite type arc-extinguish chamber " disclosed arc-control device of 02269953.8 of 02224404.2, though it has the stronger advantage of arc extinguishing ability, but it is low that current coil is made work efficiency, consumption copper is many, and flashover distance is big, also exists to face the danger that dielectric stream can not the branch deenergizing.Emerge at the product that has without the series coil arc extinguishing in the recent period, for example China Patent No. is 200720045041.8 " D.C. contactor ", disclosing D.C. contactor is Direct Action Type single-break contact structure, the arc-extinguish chamber assembly of one side, magnet is arranged on the outside magnetic field that forms of arc control device, and the overall dimension of the arc-extinguish chamber of a side just slightly reduces relatively.In China Patent No. 200420063210.7 " bipolar DC contactor "; disclosed bipolar DC contactor has adopted permanent magnet arc extinguishing technology; permanent magnet is arranged on Direct Action Type bridge type contact and fixed contact below; the bottom of arc control device; described permanent magnet is in the high-temperature region that produces electric arc; under the hot environment that electric arc produces, unshielded permanent magnet can demagnetize fast along with the rising of temperature, will influence the reliability of D.C. contactor operate as normal.
The utility model content
The purpose of this utility model provides a kind of multipole D.C. contactor, the volume that has solved the prior art existence is excessive, problems such as the solenoid consumed power is too much, it is reasonable in design, compact conformation, and volume is little, the contact breaking arc is little, touch-safe is reliable, the rated operational voltage that has significantly improved D.C. contactor reaches a kilovolt level, satisfies public transport and has both required low-voltage 24V to drive with electric motor coach, requires the same requirement that improves rated operational voltage with photovoltaic generation and wind power generation again.
The technical scheme that the utility model adopted is: this multipole D.C. contactor comprises mainly the arc control device and the main contact system of being made up of the fixed contact, bridge type contact and the pedestal that are fixed on the terminal block of electromagnetic mechanism, built-in arc extinguishing grid pieces and the run-on tab is made up of coil, iron core, armature and base plate, its technical essential is: two described iron cores of described electromagnetic mechanism are riveted on the described base plate, described coil is set on two described iron cores, and pole shoe is fixed on described iron core top; Described electromagnetic mechanism also is provided with the power assisting device of mainly being made up of power-assisted magnetic patch, brass screw, magnetism isolating spacer, guide rod, spring and guide holder, and described power assisting device and described iron core are close to described coil stationary side by side on described base plate; In the two side of corresponding electric arc generation place in the contact room of described arc control device, insert magnetic conductive board or thick magnetic conductive board, between described two magnetic conductive boards or the thick magnetic conductive board, the permanent magnet that periphery covers insulating sleeve is set, and be fixed on the top, two side in described contact room by arc-extinguish chamber, the two ends of described permanent magnet are connected with described magnetic conductive board or the seamless absorption of thick magnetic conductive board respectively, form interior permanent magnets magnetic quenching structure.
The described bridge type contact that has indicating device is arranged on the contact supporter, described contact supporter supports by the reaction spring that is arranged on the touch spring on the spring base and be arranged on the described pedestal.
The described power-assisted magnetic patch of two described power assisting devices is arranged on the below of described armature, centre position in described armature travel, the polarity of described power-assisted magnetic patch is distributed as, one the N utmost point is towards described armature, other one the S utmost point is towards described armature, and makes described power-assisted magnetic patch consistent with the electromagnetic attraction that the described coil of two series connection produces to the gravitation of described armature.
The polarity that is fixed on the described permanent magnet in the described multipole arc control device 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.
Advantage and the good effect that the utlity model has are: because the utility model electromagnetic mechanism also is provided with the power assisting device of mainly being made up of power-assisted magnetic patch, brass screw, magnetism isolating spacer, guide rod, spring and guide holder, two the iron-core coil tops of connecting arranged side by side with its power-assisted magnetic patch are fixed with pole shoe, so when two series coils pass through exciting curent, produce suction, under the acting in conjunction of power-assisted magnetic patch armature is being attracted on two pole shoes, armature drives the contact supporter by clamp connects bridge type contact and fixed contact rapidly.Simultaneously, because of the permanent magnet that the utility model also adopts two ends to be connected with magnetic conductive board or the seamless absorption of thick magnetic conductive board is respectively formed interior permanent magnets magnetic quenching structure, so when producing electric arc between bridge type contact in the contact room and the fixed contact, electric arc is in the magnetic field that the magnetic conductive board at permanent magnet the two poles of the earth forms, can apace electric arc be blown into arc control device cooling arc extinguishing, electric arc is little during the contact disjunction, and the contact electrical wear is few, and is safe and reliable.Therefore, the utility model is reasonable in design, compact conformation, volume is little, the rated operational voltage that has significantly improved D.C. contactor reaches a kilovolt level, satisfy public transport and both required low-voltage 24V to drive, require the same requirement that improves rated operational voltage with photovoltaic generation and wind power generation again with electric motor coach.Because by above measure, the utility model has solved problems such as the volume of prior art existence is excessive, and the solenoid consumed power is too much, so apply easily.
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 vertical view of Fig. 1.
Fig. 3 is the end view of the arc control device among Fig. 1.
Sequence number explanation among the figure: 1 base plate, 2 bases, 3 coils, 4 armature, 5 clamps, 6 pedestals, 7 spring bases, 8 touch springs, 9 fixed contacts, 10 bridge type contacts, 11 arc control device, the 11-5 magnetic conductive board, the thick magnetic conductive board of 11-5A, the 11-6 permanent magnet, the 11-7 insulating sleeve, the 11-8 arc extinguishing grid pieces, run-on tab 11-10,12 indicating devices, 13 contact supporters, 14 terminal blocks, 15 reaction springs, 16 brass screws, 17 magnetism isolating spacers, 18 power-assisted magnetic patch, 19 iron cores, 20 guide rods, 21 springs, 22 guide holders, 23 pole shoes, 24 copper rivets.
Embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1～3.This multipole D.C. contactor comprises electromagnetic mechanism, arc control device and contact system three parts.Electromagnetic mechanism mainly is made up of coil 3, iron core 19, armature 4, base plate 1 and power-assisted magnetic patch 18, magnetism isolating spacer 17, guide rod 20, spring 21, guide holder 22 etc.Arc control device 11 mainly comprise built-in arc extinguishing grid pieces 11-8 and run-on tab 11-10, parts such as permanent magnet 11-6, magnetic conductive board 11-5 and insulating sleeve 11-7.The concrete structure of the interior permanent magnets magnetic quenching structure of these arc control device 11 is declared Chinese patent " D.C. contactor arc-control device " simultaneously.The structure of arc control device 11 is three utmost point D.C. contactors in the present embodiment accompanying drawing.Contact system mainly is made up of the fixed contact 9, bridge type contact 10 and the pedestal 6 that are fixed on the terminal block 14.The bridge type contact 10 that has indicating device 12 is fixed on the contact supporter 13, and contact supporter 13 supports by the reaction spring 15 that is arranged on the touch spring 8 on the spring base 7 and be arranged on the pedestal 6, and terminal block 14 is fixed on the pedestal 6.Two iron cores 19 of electromagnetic mechanism are riveted on the base plate 1, and coil 3 is set on two iron cores 19, and pole shoe 23 is fixed on iron core 19 tops; Electromagnetic mechanism also is provided with the power assisting device of mainly being made up of power-assisted magnetic patch 18, brass screw 16, magnetism isolating spacer 17, guide rod 20, spring 21 and guide holder 22.This power assisting device and iron core 19 are close to coil 3 side by side and are fixed on the base plate 1.The polarity of the power-assisted magnetic patch 18 of two power assisting devices is distributed as, and the N utmost point of a power-assisted magnetic patch 18 is towards armature 4, and the S utmost point of an other power-assisted magnetic patch 18 is towards armature 4.The gravitation of 18 pairs of armature 4 of power-assisted magnetic patch should be consistent with the electromagnetic attraction that two series coils 3 produce, and therefore, this power-assisted magnetic patch 18 should be arranged on the below of armature 4, in the stroke centre position of armature 4.Armature 4 usefulness screws also link together by clamp 5 and contact supporter 13.Produce suction when two series coils 3 pass through exciting curent, under the acting in conjunction of power-assisted magnetic patch 18 armature 4 is being attracted on two pole shoes 23, armature 4 drives contact supporters 13 by clamp 5 connects bridge type contact 10 and fixed contact 9.When two series coils, 3 no exciting curents pass through, magnetic flux in the magnetic circuit that constitutes by armature 4 by two pole shoes 23 that are riveted on two cylinder iron cores 19 on the base plate 1 and top, the magnetic resistance that the air gap that is produced by 4 copper rivets 24 that are riveted on two pole shoes 23 forms, suction is reduced, under the effect of 2 reaction springs 15, contact supporter 13 is got back to original position, fixed contact 9 and 10 disjunctions of bridge type contact.
In the two side of corresponding electric arc generation place in the contact room of arc control device 11, insert magnetic conductive board 11-5 or thick magnetic conductive board 11-5A, the permanent magnet 11-6 that periphery covers insulating sleeve 11-7 is set between two magnetic conductive board 11-5 or the thick magnetic conductive board 11-5A, and be fixed on the top, two side in contact room by arc-extinguish chamber, the two ends of permanent magnet 11-6 are connected with magnetic conductive board 11-5 or the seamless absorption of thick magnetic conductive board 11-5A respectively, form interior permanent magnets magnetic quenching structure.When producing electric arc between bridge type contact 10 in the contact room and the fixed contact 9, in the magnetic field that electric arc forms because of the magnetic conductive board 11-5 that is in permanent magnet 6 the two poles of the earth or thick magnetic conductive board 11-5A, can apace electric arc be blown into arc control device 11 and cool off arc extinguishings.Arc-extinguish chamber utilizes screw and connecting plate and arc control device 11 to be fixed together.The polarity that is fixed on the permanent magnet 11-6 in the multipole arc control device 1 is distributed as: the polarity of first utmost point permanent magnet 11-6 is N-S; The polarity of second utmost point permanent magnet 11-6 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 11-6 respectively.
The installation of this multipole D.C. contactor, debugging and use are all basic identical with existing D.C. contactor.
Claims (4)
1. multipole D.C. contactor, the arc control device and the main contact system of forming by the fixed contact, bridge type contact and the pedestal that are fixed on the terminal block that comprise mainly electromagnetic mechanism, built-in arc extinguishing grid pieces and the run-on tab formed by coil, iron core, armature and base plate, it is characterized in that: two described iron cores of described electromagnetic mechanism are riveted on the described base plate, described coil is set on two described iron cores, and pole shoe is fixed on described iron core top; Described electromagnetic mechanism also is provided with the power assisting device of mainly being made up of power-assisted magnetic patch, brass screw, magnetism isolating spacer, guide rod, spring and guide holder, and described power assisting device and described iron core are close to described coil stationary side by side on described base plate; In the two side of corresponding electric arc generation place in the contact room of described arc control device, insert magnetic conductive board or thick magnetic conductive board, the permanent magnet that periphery covers insulating sleeve is set between two described magnetic conductive boards or the thick magnetic conductive board, and be fixed on the top, two side in described contact room by arc-extinguish chamber, the two ends of described permanent magnet are connected with described magnetic conductive board or the seamless absorption of thick magnetic conductive board respectively, form interior permanent magnets magnetic quenching structure.
2. multipole D.C. contactor according to claim 1 is characterized in that: the described bridge type contact that has indicating device is arranged on the contact supporter, described contact supporter supports by the reaction spring that is arranged on the touch spring on the spring base and be arranged on the described pedestal.
3. multipole D.C. contactor according to claim 1, it is characterized in that: the described power-assisted magnetic patch of two described power assisting devices is arranged on the below of described armature, centre position in described armature travel, the polarity of described power-assisted magnetic patch is distributed as, one the N utmost point is towards described armature, other one the S utmost point is towards described armature, and makes described power-assisted magnetic patch consistent with the electromagnetic attraction that the described coil of two series connection produces to the gravitation of described armature.
4. multipole D.C. contactor according to claim 1 is characterized in that: the polarity that is fixed on the described permanent magnet in the described multipole arc control device 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200057073U CN201936816U (en) | 2011-01-11 | 2011-01-11 | Multipolar direct-current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200057073U CN201936816U (en) | 2011-01-11 | 2011-01-11 | Multipolar direct-current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936816U true CN201936816U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200057073U Expired - Lifetime CN201936816U (en) | 2011-01-11 | 2011-01-11 | Multipolar direct-current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201936816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592887A (en) * | 2011-01-11 | 2012-07-18 | 沈阳二一三控制电器制造有限公司 | Multipole direct-current contactor |
-
2011
- 2011-01-11 CN CN2011200057073U patent/CN201936816U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592887A (en) * | 2011-01-11 | 2012-07-18 | 沈阳二一三控制电器制造有限公司 | Multipole direct-current contactor |
| CN102592887B (en) * | 2011-01-11 | 2014-03-19 | 沈阳二一三控制电器制造有限公司 | Multipole direct-current 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: 20110817 Effective date of abandoning: 20140319 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110817 Effective date of abandoning: 20140319 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |