CN102436975B - Bipolar DC contactor - Google Patents
Bipolar DC contactor Download PDFInfo
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- CN102436975B CN102436975B CN201110292936.2A CN201110292936A CN102436975B CN 102436975 B CN102436975 B CN 102436975B CN 201110292936 A CN201110292936 A CN 201110292936A CN 102436975 B CN102436975 B CN 102436975B
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Abstract
The invention relates to a bipolar DC contactor which is widely used in the electricity, the metallurgy, the mine, the petroleum and the traffic transportation and other heavy load systems, especially in the main traction loop on an electric locomotive, comprising an insulating frame part, a transmission part, an electromagnetic driving part, a serial magnetic blow-out part, an arc extinction system and a subsidiary loop, wherein the insulating frame part includes a static contact wallboard, an incoming line bus bar insulating wallboard and a movable contact insulating wallboard; the transmission part comprises an armature, a movable contact insulating wallboard and a movable contact; the electromagnetic driving part includes a driving coil, an iron core and an armature; the serial magnetic blow-out part includes a magnetic blow-out iron core, a magnetic blow-out coil, a stainless steel electrode, a static contact arc leading angle and a static main contact; the air extinction system comprises an air extinction chamber and a ceramic grid; the subsidiary loop is provided with a module type quick-action switch. The invention has the advantages of long service life, rapid breaking speed, stable breaking arc voltage, self-clean contact, arc leading passage, compact structure, few safety misadventures and convenient installation and maintenance.
Description
Technical field
The present invention relates to bipolar DC contactor, is a kind of jumbo bipolar electromagnetism clapper-type D.C. contactor, is widely used in the medium heavy duty systems such as electric power, metallurgy, mine, oil, communications and transportation, is specially adapted in the main traction loop in electric locomotive.
Background technology
At present, the D.C. contactor using on China's locomotive mainly contains two kinds of electric empty formula and electromagnetic types, electromagnetic treadle by electromagnetic force as power source.Electromagnetic type directly moving contactor mainly comprises body part, running part, Electromagnetic Drive part, magnetic blow-out part and arc-control device.During electromagnetic system energising, produce electromagnetic force, make armature motion and contact is connected or disjunction, thereby connect or disjunction direct-current arc, electromagnet dead electricity contact resets.Arc-control device adopts the arc extinguishing grid pieces that is arranged on contact top.The permanent-magnet steel arc district of magnetic blow-out part sets up magnetic field, during arcing, electric arc is applied to Ampere force.
The shortcoming of above-mentioned D.C. contactor is: 1, contact capacity is little, easily occurs contact melted; When 2, moving contact is with fixed contact combined floodgate separating brake, do not produce relative friction between the two, without self-cleaning function; 3, arc-control device is too simple, the ability of elongating arc and cooling electric arc; 4, series connection magnetic blow-out part adopts permanent-magnet steel, and the use of major loop is had to dividing of anodal and negative pole, and the fragile contactor of wrong direction itself, cannot extinguish arcs cause the accident; 5, contact can not be changed, and electrical endurance is short; 6, arc transfer level is poor, and electric life is low; 7, arc control device adopt metal gate slice structure to cause breaking arc spread of voltage more.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide that a kind of life-span is long, breaking speed is fast, breaking arc voltage stabilization, contact are self-cleaning, have striking passage, compact conformation, security incident jumbo bipolar DC contactor few and convenient for installation and maintenance.
Technical scheme of the present invention is: bipolar DC contactor, and it is comprised of Insulating frame part, running part, Electromagnetic Drive part, series connection magnetic blow-out part, arc quenching system and subsidiary loop; Wherein Insulating frame part comprises fixed contact wallboard, incoming-line busbar insulated siding and moving contact insulated siding; Running part comprises that armature, reaction spring, counter-force are adjusted assembly, incoming-line busbar, are flexible coupling, pressing plate, pre-compressed spring, adjusting nut, moving contact insulated siding and moving contact; Electromagnetic drive part divides and comprises drive coil, iron core, yoke, armature and armature travel lining; Series connection magnetic blow-out part comprises magnetic blow-out iron core, magnetic conduction iron plate, blowout coil, stainless steel electrode, fixed contact arc leading angle and quiet main contact; Arc quenching system comprises arc control device, arc control device framework, ceramic grid sheet, arc control device support and stainless steel electrode; Subsidiary loop has modular quick-action switch; The counter-force being arranged on base is adjusted assembly connection reaction spring, is connected with the armature being arranged on angle bar frame, and armature is realized on-fixed axis and rotated on mounting bracket with bevel edge.
On the basis of technique scheme, further technical scheme is:
Described bipolar DC contactor is equipped with rotating screw bolt on moving contact, and screw head is spherical round end, take round end as fulcrum, rotates, and mutually push, and it is self-cleaning longitudinally to rub at making process moving contact and fixed contact.
Described bipolar DC contactor, after said pre-compressed spring connects by hitching post, precompressed moving contact, on armature, provides combined floodgate contact pressure.
Described bipolar DC contactor, said yoke is supporting base and the magnetism guiding access of Electromagnetic Drive and iron core.
Described bipolar DC contactor, said blowout coil one lead end is gapped with fixed contact, contact with fixed contact arc leading angle, and another lead end contacts with stationary contact inlet wire.
Described bipolar DC contactor, the alternating expression in arc control device is arranged ceramic grid sheet, by high temperature resistant colloid and composite material arc control device framework, fixes.
Described bipolar DC contactor, said moving contact and fixed contact are to be fixedly connected with major loop by bolt, this is fixedly connected with is demolition to change being fixedly connected with of moving contact and fixed contact.
Obvious technical effects of the present invention:
1, adopt beating type electromagnet, using yoke as installing rack and magnetic circuit jointly use, compact conformation takes up room little, is also beneficial to heat radiation;
2, armature is realized the rotation of on-fixed axis with bevel edge and angle bar frame.
3, contact system is used main contact, moving contact and the mutual friction of fixed contact phase during rotation by rotating screw bolt 28 during combined floodgate, and dust out, tiny foreign material and contact surface oxide layer, reduce contact resistance, and this can effectively extend the electric life of switch.Pre-compressed spring (truncated cone helical compression spring) is for moving contact and fixed contact provide confining force when closing a floodgate, and the characteristic line of pre-compressed spring (truncated cone helical compression spring) is non-linear, has good bounce-proof effect, the generation of minimizing contact melting welding.
4, adopt the mode that blowout coil series connection is entered to major loop, take up room little, make electric arc enter fast arc control device, reduce the scaling loss of arc root to contact and arc leading angle, improved response speed and the accuracy of arc blow-out.
5, arc control device adopt the ceramic arc extinguishing grid pieces overlaying structure that interlocks, and electric arc enters after arc control device, and arc control device utilize that the staggered grid chip architecture of height in arc chamber is cut apart, elongation and cooling electric arc, and electric arc is extinguished fast;
6, switch motion counter-force is used reaction spring, takes up room so little, and easy for installation; Reaction spring directly drives base and armature, has improved accuracy and the reliability of output signal.
7, two groups of clearance between open contacts can separately be adjusted, and have good synchronism in separating brake and making process.
8, moving contact arc angle, fixed contact arc angle, stainless steel electrode form striking passage, realize the secondary transferring of arc motion, finally extinguish arcs in staggered high-performance ceramic grid sheet group.
Compared with existing contactor, load capacity of the present invention is large; Compare dependable performance, compact conformation, small volume with the contactor combination unit of same even load, and easy for installation, flexible, reliable.
Accompanying drawing explanation
Fig. 1 is overall structure figure of the present invention.
Fig. 2 is the cutaway view of the embodiment of the present invention.
Fig. 3 is arc control device insulated gate chip architecture figure of the present invention.
In figure, the title of each Reference numeral is: 1-arc control device, 2-pottery grid sheet 3-signal block, 4-quick-action switch, 5-base, 6 drive coils, 7-yoke, 8-adjusting screw assembly, 9-reaction spring, 10-arc extinguishing support, 11-stainless steel electrode, 12-magnetic conduction iron plate, 13-moving contact, 14-fixed contact arc angle, 15-fixed contact, 16 magnetic blow-out iron cores, 17-blowout coil, 18-fixed contact wallboard, 19-iron core, 20-angle bar frame, 21-armature, 22-incoming-line busbar insulation board, 23-incoming-line busbar, 24-armature travel cover, 25-is flexible coupling, 26-moving contact insulated siding, 27-pressing plate, 28-rotating screw bolt, 29-pre-compressed spring, 30-adjusting nut, 31-adjusting screw(rod), the circular-arc elasticity moving contact of 32-arc angle, 33-arc control device framework.
Embodiment
It is as follows that the invention will be further described in conjunction with the accompanying drawings and embodiments:
As shown in Figure 1, 2, 3, a kind of bipolar DC contactor, is characterized in that, it is comprised of Insulating frame part, running part, Electromagnetic Drive part, series connection magnetic blow-out part, arc quenching system and subsidiary loop; Wherein Insulating frame part comprises fixed contact wallboard 18, incoming-line busbar insulated siding 22 and moving contact insulated siding 26; Running part comprises that armature 21, reaction spring 9, counter-force are adjusted assembly 8, incoming-line busbar 23, are flexible coupling 25, pressing plate 27, pre-compressed spring 29, adjusting nut 30, moving contact insulated siding 26 and moving contact 13; Electromagnetic drive part divides and comprises drive coil 6, iron core 19, yoke 7, armature 21 and armature travel lining 24; Series connection magnetic blow-out part comprises magnetic blow-out iron core 16, magnetic conduction iron plate 12, blowout coil 17, stainless steel electrode 11, fixed contact arc leading angle 14 and quiet main contact 15; Arc quenching system comprises arc control device 1, arc control device framework 33, ceramic grid sheet 2, arc control device support 10 and stainless steel electrode 11; Subsidiary loop has modular quick-action switch 4; The counter-force adjustment assembly 8 being arranged on base 5 connects reaction spring 9, is connected with the armature 21 being arranged on angle bar frame 20, and armature 21 is realized on-fixed axis and rotated on mounting bracket 20 with bevel edge.When drive coil 6 dead electricity, armature 21 upwards resets under the effect of reaction spring 9, and moving contact 13 has disconnected separating brake action with fixed contact 15, by the armature travel lining 24 being arranged on armature 21, is for controlling separating brake stroke.Rotating screw bolt 28 is housed on moving contact 13, and screw head is spherical round end, take round end as fulcrum, rotates, and mutually push, and it is self-cleaning longitudinally to rub at making process moving contact 13 and fixed contact 15.After said pre-compressed spring 29 connects by hitching post, precompressed moving contact 13, on armature 21, provides combined floodgate contact pressure.Major loop is comprised of the contact system of two groups of same structures, and two groups of clearance between open contacts are adjusted by the adjusting screw(rod) 31 between moving contact 13 and insulated siding separately, and separating brake has fine synchronism when closing a floodgate.Said yoke 7 is supporting base and magnetism guiding access of Electromagnetic Drive 6 and iron core 19.Said blowout coil 17 1 lead ends are gapped with fixed contact 15, contact with fixed contact arc leading angle 14, and another lead end contacts with fixed contact 15 end inlet wires.Alternating expression in arc control device 1 is arranged ceramic grid sheet 2, fixing by high temperature resistant colloid and composite material arc control device framework 33.Striking passage forms arc transfer path one time by the circular-arc elasticity moving contact arc angle 32 fixed contact arc leading angles 14 that are fixed on moving contact 13, the stainless steel electrode 11 that draws that is fixed on arc control device 1 inner side, consists of and secondary arc transfer path with fixed contact arc leading angle 14.Said moving contact 13 and fixed contact 15 are to be fixedly connected with major loop by bolt, and this is fixedly connected with is being fixedly connected with of energy demolition replacing.
To the principle of the invention, technical scheme and technique effect, further illustrate as follows:
Yoke 7 and fixed contact wallboard 18 are fixed on base on 5, drive coil 6 and iron core 19 are arranged on yoke 7, armature travel lining 24 is arranged on iron core 19 tops through armature 21, with bevel edge and angle bar frame 20, both realize on-fixed axis and rotate armature 21 armature 21, and armature travel lining 24 can be adjusted the impulse stroke of armature 21.Counter-force is adjusted assembly 8 through base 5, and reaction spring 9 is adjusted assembly 8 by armature 21 and counter-force and is connected that to keep appropriate counter-force be the pre-storage power of separating brake, by adjusting counter-force adjustment assembly 8, can make left and right confining force consistent.Moving contact insulated siding 26 is fixed by screws on armature 21, rotating screw bolt 28, pre-compressed spring 29, adjusting screw(rod) 31 and moving contact 13 are arranged on moving contact insulated siding 26 by being interconnected and fixed, in the process of separating brake and combined floodgate, by the spherical rotation of rotating screw bolt 28, make moving contact 13 and fixed contact 15 produce relative sliding and reach self-cleaning effect.In "on" position, pre-compressed spring 29, for moving contact 13 provides closing retention force with contacting of fixed contact 15, makes there is good synchronism in two groups of contacts combined floodgates and separating brake process by adjusting adjusting screw(rod) 31.Blowout coil 17, magnetic blow-out iron core 16, magnetic conductive board 12 and fixed contact arc angle 14 are arranged on fixed contact wallboard 18 by being interconnected and fixed, and stainless steel electrode 11 is arranged on contactor top with arc control device support 1.Labyrinth type arc control device 1 are dressed up in the pottery interlaced stack of arc extinguishing grid pieces 2 and insulated siding combination, and arc control device 1 are fixed by screws on arc control device support 10.Quick-action switch 4 is arranged on contactor both sides, by signal block 3, is contacted and discharges with quick-action switch 4, provides signal or carries out relevant control order.
Under normal conditions, contactor is in disjunction state, and moving contact 13 disconnects with fixed contact 15.During energising, drive coil 6 produces electromagnetic force and attracts armature 21 to move down, and armature 21 drives moving contact to move down, moving contact 13 and fixed contact 15 closures.During dead electricity, armature 21 upwards resets under the effect of reaction spring 9, moving contact 13 disconnects with fixed contact 15, during disconnection, between contact, produce electric arc, electric arc jumps to respectively on stainless steel electrode 11 and fixed contact arc leading angle 14 from moving contact 15 and fixed contact 13, electric current is set up magnetic field by fixed contact arc leading angle 14 conducting blowout coils 17 between magnetic conductive board 12, strengthens the suffered Ampere force of electric arc, enters arc extinguishing arc chamber 1.Electric arc enters that arc extinguishing arc chamber 1 is cut apart under the effect of ceramic grid sheet 2, elongation and cooling electric arc, reaches the requirement of extinguish arcs.
The claims in the present invention protection range is not limited to above-described embodiment.
Claims (5)
1. a bipolar DC contactor, is characterized in that, it is comprised of Insulating frame part, running part, Electromagnetic Drive part, series connection magnetic blow-out part, arc quenching system and subsidiary loop; Wherein Insulating frame part comprises fixed contact wallboard (18), incoming-line busbar insulated siding (22) and moving contact insulated siding (26); Running part comprises armature (21), reaction spring (9), counter-force adjustment assembly (8), incoming-line busbar (23), be flexible coupling (25), pressing plate (27), pre-compressed spring (29), adjusting nut (30), moving contact insulated siding (26) and moving contact (13); Electromagnetic drive part divides and comprises drive coil (6), iron core (19), yoke (7), armature (21) and armature travel lining (24); Series connection magnetic blow-out part comprises magnetic blow-out iron core (16), magnetic conduction iron plate (12), blowout coil (17), stainless steel electrode (11), fixed contact arc leading angle (14) and fixed contact (15); Arc quenching system comprises arc control device (1), arc control device framework (33), ceramic grid sheet (2), arc control device support (10) and stainless steel electrode (11); Subsidiary loop has modular quick-action switch (4); The counter-force being arranged on base (5) is adjusted assembly (8) connection reaction spring (9), is connected with the armature (21) being arranged on angle bar frame (20), and armature (21) is realized on-fixed axis and rotated on angle bar frame (20) with bevel edge; Rotating screw bolt (28) is housed on moving contact (13), and screw head is spherical round end, take round end as fulcrum, rotates, and mutually push, and it is self-cleaning longitudinally to rub at making process moving contact (13) and fixed contact (15); After said pre-compressed spring (29) connects by hitching post, precompressed moving contact (13) is upper at armature (21), and combined floodgate contact pressure is provided.
2. bipolar DC contactor as claimed in claim 1, is characterized in that, said yoke (7) is supporting base and the magnetism guiding access of drive coil (6) and iron core (19).
3. bipolar DC contactor as claimed in claim 1, is characterized in that, said blowout coil (17) one lead ends are gapped with fixed contact (15), contact with fixed contact arc leading angle (14), and another lead end contacts with fixed contact (15) end inlet wire.
4. bipolar DC contactor as claimed in claim 1, is characterized in that, the alternating expression in arc control device (1) is arranged ceramic grid sheet (2), fixing by high temperature resistant colloid and composite material arc control device framework (33).
5. bipolar DC contactor as claimed in claim 1, it is characterized in that, said moving contact (13) and fixed contact (15) are to be fixedly connected with major loop by bolt, and this is fixedly connected with is being fixedly connected with of energy dismounting and change moving contact (13) and fixed contact (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110292936.2A CN102436975B (en) | 2011-10-06 | 2011-10-06 | Bipolar DC contactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110292936.2A CN102436975B (en) | 2011-10-06 | 2011-10-06 | Bipolar DC contactor |
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| CN102436975A CN102436975A (en) | 2012-05-02 |
| CN102436975B true CN102436975B (en) | 2014-04-30 |
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| CN110504117B (en) * | 2019-08-27 | 2021-07-06 | 杭州德睿达电气有限公司 | T-shaped symmetrical double-helix self-excitation magnetic quenching device |
| CN112490063B (en) * | 2020-11-18 | 2024-12-03 | 上海电器科学研究所（集团）有限公司 | A direct-acting fast DC circuit breaker |
| CN112447448A (en) * | 2020-12-07 | 2021-03-05 | 北京通耐科技有限公司 | Miniature non-sealing direct current contactor arc extinguishing structure |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87203775U (en) * | 1987-03-15 | 1988-08-03 | 于永学 | Ac contactor with self loop current feedback and self extinguishing type extinction of arc |
| US6292075B1 (en) * | 1997-03-08 | 2001-09-18 | B L P Components | Two pole contactor |
| CN2741174Y (en) * | 2004-05-28 | 2005-11-16 | 西安沙尔特宝电气有限公司 | Electromagnetic contactor |
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