CN103560037B - A kind of load-break switch - Google Patents
A kind of load-break switch Download PDFInfo
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- CN103560037B CN103560037B CN201310494323.6A CN201310494323A CN103560037B CN 103560037 B CN103560037 B CN 103560037B CN 201310494323 A CN201310494323 A CN 201310494323A CN 103560037 B CN103560037 B CN 103560037B
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Abstract
The invention discloses a kind of load-break switch, comprise Insulating frame and be fixed on the operating mechanism on framework, contact system and arc control device, arc control device two ends are arranged with blowout coil, contact system comprises fixed contact pedestal and the static arc contact be fixed on fixed contact pedestal and quiet main contact, fixed contact base bottom is provided with axle, axle is provided with moving contact, moving contact is fixed with moving arcing contact, dynamic main contact and spring, static arc contact is located between blowout coil and moving arcing contact, static arc contact is connected with quiet arc leading angle, blowout coil is connected with quiet arc leading angle and fixed contact pedestal, moving contact is connected with by moving contact pedestal and is flexible coupling, operating mechanism is connected with moving contact by push rod, the present invention has connection fault big current, disjunction nominal load current and short time tolerance big current ability, and compact conformation, safe and reliable, be applicable to urban track traffic DC traction power-supply system, use as vertical associated year operation electric isolating switch.
Description
Technical field
The present invention relates to a kind of load-break switch, particularly can carry out the isolating switch that operates by on-load.
Background technology
Current domestic subway is many establishes vertical connection electric isolating switch, to ensure to carry out large two-side feeding when traction substation off-the-line in segmentation place of Traction networks electricity.
No matter existing isolating switch is electronic or manual, all can not on-load operation.For ensureing equipment and personal safety, all should arrange necessary operation interlocking, in the actual motion of subway, the interlock condition of operation electric isolating switch is too many, and the time that realize large two-side feeding is longer, and the operation of power failure back brake brings the problem of train Temporarily Closed.
If design a kind of load-break switch to carry out alternative existing electric isolating switch, then can cancel all interlock condition, dispatcher can operate vertical connection load-break switch as required at any time, any road feeds out switch fault and exits or traction substation off-the-line, large two-side feeding can be realized by quick-make vertical connection load-break switch, for power scheduling operation in running brings great convenience and fast.
Summary of the invention
The object of this invention is to provide a kind of load-break switch, make it have and connect fault big current, disjunction nominal load current and short time tolerance big current ability, substitute existing electric isolating switch.
The technical solution adopted for the present invention to solve the technical problems is: a kind of load-break switch, comprise Insulating frame and be fixed on the operating mechanism on framework, contact system and arc control device, described arc control device two ends are arranged with blowout coil, described contact system comprises fixed contact pedestal and the static arc contact be fixed on fixed contact pedestal and quiet main contact, described fixed contact base bottom is provided with axle, axle is provided with moving contact, moving contact is fixed with moving arcing contact, dynamic main contact and spring, described static arc contact is located between blowout coil and moving arcing contact, static arc contact is connected with quiet arc leading angle, described blowout coil is connected with quiet arc leading angle and fixed contact pedestal, described moving contact is connected with by moving contact pedestal and is flexible coupling, described operating mechanism is connected with moving contact by push rod.
Described a kind of load-break switch, its contact system is multipole contact system in parallel, and moving arcing contact has two, and dynamic main contact has three.
Described a kind of load-break switch, its contact system is multipole contact system in parallel, and moving arcing contact and dynamic main contact are two.
Described electric multipole motor isolating switch, is fixed with magnetic conductive board outside its blowout coil.
Described electric multipole motor isolating switch, its operating mechanism is permanent-magnet operating mechanism, and arc control device are grid formula arc control device.
Described electric multipole motor isolating switch, its fixed contact pedestal has two static arc contacts and three quiet main contacts.
The invention has the beneficial effects as follows:
1, by the design of dynamic arc two grades of contacts of advocating peace dynamic on fixed contact pedestal, moving arcing contact is made to bear the task of connecting load and breaking arc, dynamic main contact bears big current current-carrying task, thus switch has been taken into account current capacity and has been connected the strong feature of disjunction, it is identical thus produce the electromagnetic attraction strengthening contact by the dynamic sense of current between main contact and moving arcing contact when switch closes, solve moving arcing contact and close spring problem, the short time withstand current ability of switch is improved greatly, electrodynamic repulsion force when adopting the contact system of multipole parallel connection to reduce closed further in addition,
2, the electrical connection of quiet arc leading angle and fixed contact pedestal is realized by blowout coil, outside blowout coil and arc control device two, fix magnetic conductive board simultaneously, make switch when disjunction load, blowout coil is connected into major loop by electric arc, thus make blowout coil produce the magnetic field being conducive to arc extinction, strengthen the breaking capacity of switch;
3, adopt permanent-magnet operating mechanism, reduce driving parts quantity, improve switch reliability, reduce volume of switch simultaneously;
4, adopt grid formula arc control device, the overvoltage produced when can reduce breaking arc, reduces the arc district of switch simultaneously.
Accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present invention;
Fig. 2 is the structural representation of moving contact first embodiment of the present invention;
Fig. 3 is the structural representation of moving contact second embodiment of the present invention.
Wherein: 1-arc control device, 1.1-quiet arc leading angle, 2-blowout coil, 3-contact system, 3.1-fixed contact pedestal, 3.2-static arc contact, 3.3-quiet main contact, 3.4-moving contact, 3.41-moving arcing contact, 3.42-dynamic main contact, 3.43-spring, 3.5-moving contact pedestal, 3.6-be flexible coupling, 4-operating mechanism, 4.1-push rod, 5-framework, 6-axle.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
With reference to Fig. 1, shown in Fig. 2 and Fig. 3, the invention discloses a kind of load-break switch, comprise Insulating frame 5 and be fixed on the operating mechanism 4 on framework 5, contact system 3 and arc control device 1, described arc control device 1 are grid formula arc control device, arc control device 1 two ends are provided with blowout coil 2, blowout coil 2 and arc control device 1 also come framework 5 two ends, magnetic conductive board is fixed with outside blowout coil 2, make switch when disjunction load, blowout coil is connected into major loop by electric arc, thus make blowout coil produce the magnetic field being conducive to arc extinction, strengthen the breaking capacity of switch, described operating mechanism 4 is permanent-magnet operating mechanism, described contact system 3 comprises fixed contact pedestal 3.1 and two static arc contacts 3.2 of being fixed on fixed contact pedestal 3.1 and three quiet main contacts 3.3, blowout coil 2 is for realizing the electrical connection of quiet arc leading angle 1.1 and static arc contact 3.2, axle 6 is provided with bottom described fixed contact pedestal 3.1, axle 6 is provided with moving contact 3.4, moving contact 3.4 is fixed with moving arcing contact 3.41, dynamic main contact 3.42 and spring 3.43, described static arc contact 3.2 is located between blowout coil 2 and moving arcing contact 3.41, static arc contact 3.2 is connected with quiet arc leading angle 1.1, described blowout coil 2 is connected with quiet arc leading angle 1.1 and fixed contact pedestal 3.1, described moving contact 3.4 is connected with by moving contact pedestal 3.5 and is flexible coupling 3.6, described operating mechanism 4 is connected with moving contact 3.4 by push rod 4.1, the present invention makes moving arcing contact 3.41 bear the task of connecting load and breaking arc, dynamic main contact 3.42 bears big current current-carrying task, thus switch has been taken into account current capacity and has been connected the strong feature of disjunction, it is identical thus produce the electromagnetic attraction strengthening contact by the dynamic sense of current between main contact 3.42 and moving arcing contact 3.41 when switch closes, solve moving arcing contact 3.41 and close spring problem, the short time withstand current ability of switch is improved greatly.
As specific embodiment, described contact system 3 is multipole contact system in parallel, electrodynamic repulsion force when adopting the contact system of multipole parallel connection to reduce closed further, Figure 2 shows that the first embodiment of moving contact 3.4 of the present invention, moving arcing contact 3.41 has two, dynamic main contact 3.42 has three, and Figure 3 shows that the second embodiment of moving contact 3.4 of the present invention, moving arcing contact 3.41 and dynamic main contact 3.42 are two.
When moving contact 3.4 occurs to close a floodgate rotation, moving arcing contact 3.41 first contacts with static arc contact 3.2, after turning an angle, dynamic main contact 3.42 contacts with quiet main contact 3.3 again, when there is separating brake rotation in moving contact 3.4, moving arcing contact 3.41 is first separated with static arc contact 3.2 under operating mechanism 4 acts on, after turning an angle, dynamic main contact 3.42 is separated with quiet main contact 3.3 again, the present invention has connection fault big current, disjunction nominal load current and short time tolerance big current ability, and compact conformation, safe and reliable, be applicable to urban track traffic DC traction power-supply system, use as vertical associated year operation electric isolating switch, realize not having a power failure the operation of large two-side feeding back brake.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1. a load-break switch, it is characterized in that: comprise Insulating frame (5) and be fixed on the operating mechanism (4) on framework (5), contact system (3) and arc control device (1), described arc control device (1) two ends are arranged with blowout coil (2), described contact system (3) comprises fixed contact pedestal (3.1) and the static arc contact (3.2) that is fixed on fixed contact pedestal (3.1) and quiet main contact (3.3), described fixed contact pedestal (3.1) bottom is provided with axle (6), axle (6) is provided with moving contact (3.4), moving contact (3.4) is fixed with moving arcing contact (3.41), dynamic main contact (3.42) and spring (3.43), described static arc contact (3.2) is located between blowout coil (2) and moving arcing contact (3.41), static arc contact (3.2) is connected with quiet arc leading angle (1.1), described blowout coil (2) is connected with quiet arc leading angle (1.1) and fixed contact pedestal (3.1), described moving contact (3.4) is connected be flexible coupling (3.6) by moving contact pedestal (3.5), described operating mechanism (4) is connected with moving contact (3.4) by push rod (4.1), described contact system (3) is multipole contact system in parallel, and the main contact of load-break switch and arcing contact all adopt equidirectional single-break clapper-type contact side by side.
2. load-break switch according to claim 1, is characterized in that: described moving arcing contact (3.41) has two, and dynamic main contact (3.42) has three.
3. load-break switch according to claim 1, is characterized in that: described moving arcing contact (3.41) and dynamic main contact (3.42) are two.
4. the load-break switch according to claim 1 or 2 or 3, is characterized in that: described blowout coil (2) outside is fixed with magnetic conductive board.
5. load-break switch according to claim 4, is characterized in that: described operating mechanism (4) is permanent-magnet operating mechanism.
6. load-break switch according to claim 5, is characterized in that: described arc control device (1) are grid formula arc control device.
7. load-break switch according to claim 6, is characterized in that: described fixed contact pedestal (3.1) has two static arc contacts (3.2) and three quiet main contacts (3.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310494323.6A CN103560037B (en) | 2013-10-21 | 2013-10-21 | A kind of load-break switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310494323.6A CN103560037B (en) | 2013-10-21 | 2013-10-21 | A kind of load-break switch |
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| Publication Number | Publication Date |
|---|---|
| CN103560037A CN103560037A (en) | 2014-02-05 |
| CN103560037B true CN103560037B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310494323.6A Active CN103560037B (en) | 2013-10-21 | 2013-10-21 | A kind of load-break switch |
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| CN (1) | CN103560037B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157490A (en) * | 2014-08-27 | 2014-11-19 | 武汉长海电气科技开发有限公司 | High-voltage direct current contactor contact system |
| CN104576121B (en) * | 2015-01-21 | 2017-12-05 | 北京双杰电气股份有限公司 | Magnetic blowing arc extinguishing switch |
| CN105762000A (en) * | 2016-04-06 | 2016-07-13 | 中国船舶重工集团公司第七〇二研究所 | DC load isolation switch |
| CN106783351B (en) * | 2017-02-24 | 2019-03-05 | 国家电网公司 | A kind of single armed is folded for insertion into formula ± 1100kV extra-high voltage direct-current disconnecting switch |
| CN109148177A (en) * | 2018-09-30 | 2019-01-04 | 浙江中乾电气有限公司 | Transhipment formula electromagnetic switch mechanism |
| CN109166747B (en) * | 2018-10-16 | 2024-03-08 | 武汉长海电气科技开发有限公司 | DC load switch |
| CN114203492A (en) * | 2021-12-23 | 2022-03-18 | 江苏其厚智能电气设备有限公司 | Plastic shell type circuit breaker contact system with arc contacts |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133045Y (en) * | 1992-09-09 | 1993-05-12 | 黄科云 | 10 kv air high voltage a.c. contactor |
| CN2605701Y (en) * | 2003-01-25 | 2004-03-03 | 陈兆力 | Alternating-current star-delta time-delay conversion contactor |
| CN202977312U (en) * | 2012-12-18 | 2013-06-05 | 天水黄河电气有限公司 | Novel direct-current contactor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02148524A (en) * | 1988-11-29 | 1990-06-07 | Mitsubishi Electric Corp | Breaker for use in vehicle |
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2013
- 2013-10-21 CN CN201310494323.6A patent/CN103560037B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133045Y (en) * | 1992-09-09 | 1993-05-12 | 黄科云 | 10 kv air high voltage a.c. contactor |
| CN2605701Y (en) * | 2003-01-25 | 2004-03-03 | 陈兆力 | Alternating-current star-delta time-delay conversion contactor |
| CN202977312U (en) * | 2012-12-18 | 2013-06-05 | 天水黄河电气有限公司 | Novel direct-current contactor |
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| CN103560037A (en) | 2014-02-05 |
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