CN102436975A - Bipolar DC contactor - Google Patents
Bipolar DC contactor Download PDFInfo
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- CN102436975A CN102436975A CN2011102929362A CN201110292936A CN102436975A CN 102436975 A CN102436975 A CN 102436975A CN 2011102929362 A CN2011102929362 A CN 2011102929362A CN 201110292936 A CN201110292936 A CN 201110292936A CN 102436975 A CN102436975 A CN 102436975A
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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 the bipolar DC contactor, is a kind of jumbo bipolar electromagnetism clapper-type D.C. contactor, is widely used in medium heavy duty such as electric power, metallurgy, mine, oil, the communications and transportation system, is specially adapted in the main traction loop in the electric locomotive.
Background technology
At present, the D.C. contactor that uses on China's locomotive mainly contains two kinds of electric empty formula and electromagnetic types, and electromagnetic treadle leans on electromagnetic force as power source.The directly moving contactor of electromagnetic type mainly comprises body part, running part, Electromagnetic Drive part, magnetic blow-out part and arc-control device.Produce electromagnetic force during the electromagnetic system energising, make armature motion and contact is connected or disjunction, thereby connect or the disjunction direct-current arc, electromagnet dead electricity contact resets.Arc-control device adopts the arc extinguishing grid pieces that is installed in the contact top.The permanent-magnet steel arc district of magnetic blow-out part sets up magnetic field, during arcing electric arc is applied Ampere force.
The shortcoming of above-mentioned D.C. contactor is: 1, contact capacity is little, occurs contact melted easily; 2, produce friction relatively, no self-cleaning function when moving contact and fixed contact combined floodgate separating brake between the two; 3, arc-control device is too simple, elongates electric arc and the ability of cooling off electric arc; 4, permanent-magnet steel is partly adopted in the series connection magnetic blow-out, and the use of major loop is had branch anodal and negative pole, and the fragile contactor of wrong direction itself can't extinguish arcs cause the accident; 5, contact can not be changed, and electrical endurance is short; 6, the arc transfer level is poor, and electric life is low; 7, arc control device adopt the metal gate slice structure to cause the breaking arc spread of voltage more.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of life-span long, breaking speed is fast, breaking arc voltage is stable, contact is self-cleaning, have striking passage, compact conformation, security incident to reach jumbo bipolar DC contactor convenient for installation and maintenance less.
Technical scheme of the present invention is: the bipolar DC contactor, and it is made up of Insulating frame part, running part, Electromagnetic Drive part, series connection magnetic blow-out part, arc quenching system and subsidiary loop; Wherein Insulating frame partly comprises fixed contact wallboard, inlet wire busbar insulated siding and moving contact insulated siding; Running part comprises armature, reaction spring, counter-force adjustment assembly, inlet wire busbar, is flexible coupling, pressing plate, pre-compressed spring, adjusting nut, moving contact insulated siding and moving contact; The electromagnetic drive part branch comprises drive coil, iron core, yoke, armature and armature travel lining; The series connection magnetic blow-out partly 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 the modular quick-action switch; The counter-force adjustment assembly that is installed on the base connects reaction spring, is connected with armature on being installed in angle bar frame, and armature is realized the on-fixed rotational with bevel edge on mounting bracket.
Further technical scheme is on the basis of technique scheme:
Described bipolar DC contactor is equipped with rotating screw bolt on moving contact, screw head is spherical round end, is that fulcrum rotates with the round end, and in making process moving contact and fixed contact mutual extrusion, and it is self-cleaning vertically to rub.
Described bipolar DC contactor, said pre-compressed spring connects back precompressed moving contact on armature through hitching post, and the combined floodgate contact pressure is provided.
Described bipolar DC contactor, said yoke are the 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 the fixed contact arc leading angle, and another lead end contacts with the stationary contact inlet wire.
Described bipolar DC contactor, the alternating expression in the arc control device are arranged ceramic grid sheet, through high temperature resistant colloid and composite material arc control device frame fixation.
Described bipolar DC contactor, said moving contact and fixed contact are to be fixedly connected with major loop through bolt, and this fixed connection is the fixed connection that moving contact and fixed contact are changed in the ability demolition.
Obvious technical effects of the present invention:
1, adopt beating type electromagnet, yoke is used as installing rack and magnetic circuit jointly, compact conformation takes up room little, also is beneficial to heat radiation;
2, armature is realized the on-fixed rotational with bevel edge and angle bar frame.
3, contact system uses main contact, moving contact and fixed contact mutual friction mutually during rotation through rotating screw bolt 28 during combined floodgate, and dust out, tiny foreign material and contact surface oxide layer reduce contact resistance, and this can both effectively prolong the electric life of switch.Pre-compressed spring (truncated cone helical compression spring) is that 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, and well anti-spring effect is arranged, and reduces the generation of contact melting welding.
4, adopt the mode of going into the blowout coil series connection major loop, it is little to take up room, and makes electric arc get into arc control device fast, reduces the scaling loss of arc root to contact and arc leading angle, has improved the 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 after electric arc got into arc control device, arc control device utilized in the arc chamber the staggered grid chip architecture of height to cut apart, elongate and cool off electric arc, and electric arc is extinguished fast;
6, switch motion counter-force is used reaction spring, and it is little to take up room like this, and easy for installation; Reaction spring directly drives base and armature, has improved the accuracy and the reliability of output signal.
7, two groups of clearance between open contacts can separately be adjusted, and good synchronism is arranged in separating brake and the making process.
8, moving contact arc angle, fixed contact arc angle, stainless steel electrode are formed the striking passage, realize the secondary transferring of arc motion, finally extinguish arcs in staggered high-performance ceramic grid sheet group.
Compare with existing contactor, load capacity of the present invention is big; With compare dependable performance, compact conformation, volume with the contactor composite set of even load less, and easy for installation, flexible, reliable.
Description of drawings
Fig. 1 is overall structure figure of the present invention.
Fig. 2 is the cutaway view of the embodiment of the invention.
Fig. 3 is arc control device insulated gate chip architecture figure of the present invention.
The title of each Reference numeral is among the figure: the 1-arc control device; 2-pottery grid sheet 3-signal block; The 4-quick-action switch; The 5-base; 6 drive coils; The 7-yoke; 8-adjusting screw assembly; The 9-reaction spring; 10-arc extinguishing support; The 11-stainless steel electrode; 12-magnetic conduction iron plate; The 13-moving contact; 14-fixed contact arc angle; The 15-fixed contact; 16 magnetic blow-out iron cores; The 17-blowout coil; 18-fixed contact wallboard; The 19-iron core; The 20-angle bar frame; 21-armature; 22-inlet wire busbar insulation board; 23-inlet wire busbar; 24-armature travel cover; 25-is flexible coupling; 26-moving contact insulated siding; The 27-pressing plate; The 28-rotating screw bolt; The 29-pre-compressed spring; The 30-adjusting nut; The 31-adjusting screw(rod); The circular-arc elasticity moving contact of 32-arc angle; 33-arc control device framework.
Embodiment
In conjunction with accompanying drawing and embodiment the present invention is described further as follows:
Like Fig. 1,2, shown in 3, a kind of bipolar DC contactor is characterized in that, it is made up of Insulating frame part, running part, Electromagnetic Drive part, series connection magnetic blow-out part, arc quenching system and subsidiary loop; Wherein Insulating frame partly comprises fixed contact wallboard 18, inlet wire busbar insulated siding 22 and moving contact insulated siding 26; Running part comprises armature 21, reaction spring 9, counter-force adjustment assembly 8, inlet wire 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; The electromagnetic drive part branch comprises drive coil 6, iron core 19, yoke 7, armature 21 and armature travel lining 24; The series connection magnetic blow-out partly 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 that is installed on the base 5 connects reaction springs 9, is connected with armature 21 on being installed in angle bar frame 20, and armature 21 is realized the on-fixed rotational with bevel edge on mounting bracket 20.When drive coil 6 dead electricity, armature 21 upwards resets under the effect of reaction spring 9, and moving contact 13 breaks off with fixed contact 15 accomplishes the separating brake action, is to be used for controlling the separating brake stroke through the armature travel lining 24 that is installed on the armature 21.Rotating screw bolt 28 is housed on moving contact 13, and screw head is spherical round end, is that fulcrum rotates with the round end, and in making process moving contact 13 and fixed contact 15 mutual extrusion, and it is self-cleaning vertically to rub.Said pre-compressed spring 29 connects back precompressed moving contact 13 on armature 21 through hitching post, and the combined floodgate contact pressure is provided.Major loop is made up of the contact system of two groups of same structures, and two groups of clearance between open contacts are adjusted through the adjusting screw(rod) between moving contact 13 and insulated siding 31 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 and fixed contact be 15 gapped, contact with fixed contact arc leading angle 14, and another lead end contacts with fixed contact 15 end inlet wires.Alternating expression in the arc control device 1 is arranged ceramic grid sheet 2, and is fixing through high temperature resistant colloid and composite material arc control device framework 33.The striking passage is formed the 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 the moving contact 13, forms and the secondary arc transfer path with fixed contact arc leading angle 14 by being fixed on the arc control device 1 inboard stainless steel electrode 11 that draws.Said moving contact 13 and fixed contact 15 are to be fixedly connected with major loop through bolt, and this fixed connection is the fixed connection that the ability demolition is changed.
The principle of the invention, technical scheme and technique effect are further specified as follows:
Yoke 7 and fixed contact wallboard 18 are fixed on the base on 5; Drive coil 6 is installed on the yoke 7 with iron core 19; Armature travel lining 24 passes armature 21 and is installed in iron core 19 tops; Both realize on-fixed rotational armature 21 to armature 21 with bevel edge and angle bar frame 20, and armature travel lining 24 can be adjusted the impulse stroke of armature 21.Counter-force adjustment assembly 8 passes base 5, and it is the preparatory storage power of separating brake that reaction spring 9 is connected an amount of counter-force of maintenance with armature 21 with counter-force adjustment assembly 8, can make left and right sides confining force consistent through adjustment counter-force adjustment assembly 8.Moving contact insulated siding 26 passes through screw on armature 21; Rotating screw bolt 28, pre-compressed spring 29, adjusting screw(rod) 31 and moving contact 13 are fixedly mounted on the moving contact insulated siding 26 through interconnecting; In the process of separating brake and combined floodgate,, make moving contact 13 produce slide relative and reach self-cleaning effect with fixed contact 15 through the spherical rotation of rotating screw bolt 28.Pre-compressed spring 29 provides closing retention force for moving contact 13 with contacting of fixed contact 15 in "on" position, through adjustment adjusting screw(rod) 31 make two groups of contacts close a floodgate with the separating brake process in good synchronism is arranged.Blowout coil 17, magnetic blow-out iron core 16, magnetic conductive board 12 and fixed contact arc angle 14 are fixedly mounted on the fixed contact wallboard 18 through interconnecting, and stainless steel electrode 11 is installed in the contactor top with arc control device support 1.Labyrinth type arc control device 1 are dressed up in pottery arc extinguishing grid pieces 2 interlaced stacks and insulated siding combination, and arc control device 1 pass through screw on arc control device support 10.Quick-action switch 4 is installed in the contactor both sides, contacts and release with quick-action switch 4 through signal block 3, provides signal or carries out relevant control command.
Under normal conditions, contactor is in the disjunction state, and moving contact 13 breaks off with fixed contact 15.Drive coil 6 produces electromagnetic force and attracts armature 21 to move down during energising, and armature 21 drives moving contact and moves down, moving contact 13 and fixed contact 15 closures.During dead electricity; Armature 21 upwards resets under the effect of reaction spring 9, and moving contact 13 breaks off with fixed contact 15, between contact, produces electric arc during disconnection; Electric arc jumps to respectively on stainless steel electrode 11 and the fixed contact arc leading angle 14 on moving contact 15 and fixed contact 13; Electric current is set up magnetic field through fixed contact arc leading angle 14 conducting blowout coils 17 between magnetic conductive board 12, strengthen the suffered Ampere force of electric arc, gets into arc extinguishing arc chamber 1.Electric arc entering arc extinguishing arc chamber 1 is cut apart, is elongated under the effect of ceramic grid sheet 2 and cools off electric arc, reaches the requirement of extinguish arcs.
Claim protection range of the present invention is not limited to the foregoing description.
Claims (7)
1. a bipolar DC contactor is characterized in that, it is made up of Insulating frame part, running part, Electromagnetic Drive part, series connection magnetic blow-out part, arc quenching system and subsidiary loop; Wherein Insulating frame partly comprises fixed contact wallboard (18), inlet wire busbar insulated siding (22) and moving contact insulated siding (26); Running part comprises armature (21), reaction spring (9), counter-force adjustment assembly (8), inlet wire 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); The electromagnetic drive part branch comprises drive coil (6), iron core (19), yoke (7), armature (21) and armature travel lining (24); The series connection magnetic blow-out partly 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) that is installed on the base (5) connects reaction spring (9), is connected with armature (21) on being installed in angle bar frame (20), and armature (21) is gone up realization on-fixed rotational with bevel edge at mounting bracket (20).
2. bipolar DC contactor as claimed in claim 1 is characterized in that, rotating screw bolt (28) is housed on moving contact (13); Screw head is spherical round end; With the round end is that fulcrum rotates, and in making process moving contact (13) and fixed contact (15) mutual extrusion, and it is self-cleaning vertically to rub.
3. bipolar DC contactor as claimed in claim 1 is characterized in that, said pre-compressed spring (29) connects back precompressed moving contact (13) on armature (21) through hitching post, and the combined floodgate contact pressure is provided.
4. bipolar DC contactor as claimed in claim 1 is characterized in that, said yoke (7) is the supporting base and the magnetism guiding access of Electromagnetic Drive (6) and iron core (19).
5. 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.
6. bipolar DC contactor as claimed in claim 1 is characterized in that, the alternating expression in the arc control device (1) is arranged ceramic grid sheet (2), and is fixing through high temperature resistant colloid and composite material arc control device framework (33).
7. 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 through bolt, and this fixed connection is the fixed connection that moving contact (13) and fixed contact (15) are changed in the ability demolition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110292936.2A CN102436975B (en) | 2011-10-06 | 2011-10-06 | Bipolar DC contactor |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN102436975A true CN102436975A (en) | 2012-05-02 |
| CN102436975B CN102436975B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110292936.2A Active CN102436975B (en) | 2011-10-06 | 2011-10-06 | Bipolar DC contactor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157503A (en) * | 2014-08-27 | 2014-11-19 | 武汉长海电气科技开发有限公司 | Direct current switch magnetic arc blasting device |
| CN108344157A (en) * | 2018-04-20 | 2018-07-31 | 广东绿岛风空气***股份有限公司 | A kind of imitate entirely removes the new wind turbine of haze |
| CN109166747A (en) * | 2018-10-16 | 2019-01-08 | 武汉长海电气科技开发有限公司 | A kind of DC load switch |
| CN109935499A (en) * | 2019-04-26 | 2019-06-25 | 上海立新电器控制设备有限公司 | A kind of contact assembly and the towing vehicle DC. current electromagnetic contactor using it |
| CN110504117A (en) * | 2019-08-27 | 2019-11-26 | 西南交通大学 | A kind of symmetrical double helix autoexcitation magnetic-quenching arc-extinguishing device of T-type |
| CN112490063A (en) * | 2020-11-18 | 2021-03-12 | 上海电器科学研究所（集团）有限公司 | Direct-acting type rapid direct-current circuit breaker |
| CN116072485A (en) * | 2023-03-30 | 2023-05-05 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker comprising same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157503A (en) * | 2014-08-27 | 2014-11-19 | 武汉长海电气科技开发有限公司 | Direct current switch magnetic arc blasting device |
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| CN109935499A (en) * | 2019-04-26 | 2019-06-25 | 上海立新电器控制设备有限公司 | A kind of contact assembly and the towing vehicle DC. current electromagnetic contactor using it |
| CN109935499B (en) * | 2019-04-26 | 2024-07-02 | 上海立新电器控制设备有限公司 | DC electromagnetic contactor for traction vehicle |
| CN110504117A (en) * | 2019-08-27 | 2019-11-26 | 西南交通大学 | A kind of symmetrical double helix autoexcitation magnetic-quenching arc-extinguishing device of T-type |
| 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 |
| CN112490063A (en) * | 2020-11-18 | 2021-03-12 | 上海电器科学研究所（集团）有限公司 | Direct-acting type rapid direct-current circuit breaker |
| CN116072485A (en) * | 2023-03-30 | 2023-05-05 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker comprising same |
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| CN102436975B (en) | 2014-04-30 |
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