CN201215783Y - Novel vacuum loaded switch - Google Patents

Novel vacuum loaded switch Download PDF

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Publication number
CN201215783Y
CN201215783Y CNU2008200490284U CN200820049028U CN201215783Y CN 201215783 Y CN201215783 Y CN 201215783Y CN U2008200490284 U CNU2008200490284 U CN U2008200490284U CN 200820049028 U CN200820049028 U CN 200820049028U CN 201215783 Y CN201215783 Y CN 201215783Y
Authority
CN
China
Prior art keywords
isolation knife
knife
insulating
vacuum interrupter
pole assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008200490284U
Other languages
Chinese (zh)
Inventor
吴国成
胡伟峰
韦柳涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHUHAI COMKING ELECTRIC CO Ltd
Original Assignee
ZHUHAI COMKING ELECTRIC CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHUHAI COMKING ELECTRIC CO Ltd filed Critical ZHUHAI COMKING ELECTRIC CO Ltd
Priority to CNU2008200490284U priority Critical patent/CN201215783Y/en
Application granted granted Critical
Publication of CN201215783Y publication Critical patent/CN201215783Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a novel vacuum load switch, which comprises an insulating tube, a static contact, an upper bus, an insulating knife, a conductive mass, a vacuum arc-extinguishing chamber, a soft connection mechanism, an insulating knife insulated pull rod component, an upper fuse clip, a fixed copper bus, a lower fuse clip, a fixed copper bus, a lower bus, an arc extinguish chamber insulated pull rod component, an insulating cover and an operation control mechanism. Two clamp plates are formed on the upper end of the conductive mass, rotation shaft mounting holes are arranged on the two clamp plates, rotation shaft matching holes are arranged on a lower connecting part of the insulating knife, the lower connecting part of the insulating knife is installed between the two clamp plates, the conductive mass and the insulating knife are connected in a hinged mode through the rotation shafts, thereby improving the electric performance of the insulating knife and prolonging the service life, two conductive springs are arranged between the lower connecting part of the insulating knife and the two clamp plates of the conductive mass, which enables the two conductive springs to form flexible contact with the two clamp plates and the lower connecting part of the insulating knife after assembly, the electric performance is better, an opening is arranged on the front end surface of a mounting cavity of the vacuum arc-extinguishing chamber, and an insulating cover plate is installed on the opening, which enables the outer insulation effect of the arc extinguish chamber to be better.

Description

A kind of novel evacuated on-load switch
Technical field
The utility model relates to controller switching equipment, relates in particular to the vacuum load switch in the electrical power transmission system.
Background technology
Current China produce with the vacuum load switch of reality at network operation, great majority are that the pass of isolation knife is combined into and moves up and down, and vacuum interrupter and isolation knife to be tandem compound form, do not have obvious breaking point, volume is big.And its vacuum interrupter most exposed (admittedly except envelope types) outside, and the danger that is damaged by collision is arranged when transportation, Installation and Debugging unavoidably, and particularly its external insulation performance can significantly reduce when surrounding air environment is relatively more abominable.In addition, the vacuum interrupter of main circuit and the connection of isolation knife, it all is the soft copper band of forming with multilayer book Copper Foil, two ends are connected respectively to the stiff end of arc control device and the tache motorice of isolation knife with bolt, because the rotational angle during the isolation knife divide-shut brake is big, the twist and warping angle of soft copper band is also big, behind breaking-closing operating repeatedly, the soft copper band can produce metal fatigue, even can rupture; When minor failure appears in soft copper band outer insulator, can enlarge simultaneously owing to insulation distance makes fault inadequately.Above-mentioned several drawback all is serious hidden danger to the safe operation of equipment and electrical network.
The utility model content
The purpose of this utility model provides a kind of vacuum load switch, avoids the soft copper band to produce metal fatigue and is directed at the potential safety hazard of fracture, overcomes the vacuum interrupter surrounding air environment simultaneously when relatively more abominable, and its external insulation performance can significantly reduced defective.
A kind of novel evacuated on-load switch comprises insulating cylinder, fixed contact, goes up busbar, isolation knife, vacuum interrupter, the mechanism that is flexible coupling, isolation knife insulated tension pole assembly, goes up fuse clip and fixedly copper bar, fuse clip and fixedly copper bar, following busbar, arc control device insulated tension pole assembly, insulating cover and operating-controlling mechanism down; The insulating cylinder top is formed with the fixed contact installation portion, fixed contact installation portion below is formed with the installation cavity of isolation knife insulated tension pole assembly, installation cavity below one side of isolation knife insulated tension pole assembly is formed with the vacuum interrupter installation cavity, and the installation cavity below opposite side of isolation knife insulated tension pole assembly is formed with the pull bar loose slot; Fixed contact and last busbar are installed on the described fixed contact installation portion by first screw, isolation knife is arranged on the top of described vacuum interrupter installation cavity, the isolation knife upper end is provided with isolation knife contact installation portion, the lower end is provided with connecting portion under the isolation knife, and the middle part is provided with the connecting rod connecting portion; Isolation knife insulated tension pole assembly comprises connecting rod, connecting lever and pull bar, and connecting rod one end connects the connecting rod connecting portion of isolation knife, and the other end connects an end of connecting lever, the downward cylinder lever connecting rod of the other end of connecting lever; Described insulating cover is arranged on the below of described insulating cylinder, and described arc control device insulated tension pole assembly is arranged in the insulating cover, and described arc control device insulated tension pole assembly and described pull bar all are connected with operating-controlling mechanism; Vacuum interrupter is installed in the described vacuum interrupter installation cavity, the vacuum interrupter lower end is connected with the mechanism that is flexible coupling, be flexible coupling mechanism and then connect to go up fuse clip and fixing copper bar, following fuse clip and fixedly copper bar be arranged on the insulating cover lower end, described under busbar reach fixedly with following fuse clip that copper bar is connected; It is characterized in that, also comprise conducting block, be arranged on described vacuum interrupter installation cavity top, this conducting block lower end is connected with vacuum interrupter, and the upper end is connected with connecting portion articulated manner under the described isolation knife.
Advantage of the present utility model and beneficial effect are: improved the electric property of isolation knife and the external insulation performance of arc control device.
Description of drawings
Fig. 1 is for using the vacuum load switch schematic diagram that the utility model provides;
The vacuum load switch that Fig. 2 provides for the utility model relates to the explosive view of main circuit part;
Internal structure schematic diagram after the vacuum load switch that Fig. 3 provides for the utility model is assembled.
Description of reference numerals: 100. vacuum load switchs, 101,102,103. the three-phase post of vacuum load switch, 21. operating-controlling mechanisms, 1. insulating cylinder, 111. fixed contact installation portions, 112. isolation knife insulated tension pole assembly installation cavitys, 113. the vacuum interrupter installation cavity, 114. pull bar loose slots are 2. gone up busbar, 3. fixed contact, 4. first screw, 51. connecting rods, 52. connecting lever, 53. pull bars, 7. isolation knife, 71. the isolation knife contact, 72. isolate tool arm, 73. isolation knife insulation crusts, 74. isolation knife contact installation portion, 75. connecting rod connecting portions, connecting portion under 76. isolation knife, 761. annular groove, 8. conduction spring, 9. rotating shaft, 10. conducting block, 108. clamping plate, 11. second screw, 12. insulation cover plates, 13. vacuum interrupters, the mechanism 14. be flexible coupling, 15. last fuse clip reaches fixedly copper bar, 16. insulating covers, and 17. times fuse clip reaches fixedly copper bar, 18. following busbar, 19. insulation shells.
Embodiment
Figure 1 shows that a kind of vacuum load switch 100 that present embodiment provides, this switch includes three-phase post 101,102 and 103, by operating-controlling mechanism 21 controls.Introduce the concrete structure of a phase post of vacuum load switch in detail below in conjunction with accompanying drawing.
The vacuum load switch that Fig. 2 provides for present embodiment relates to the explosive view of main circuit part, and this main circuit partly comprises insulating cylinder 1, last busbar 2, fixed contact 3, isolation knife 7, isolation knife insulated tension pole assembly, conducting block 10, vacuum interrupter 13, mechanism 14 is flexible coupling.In conjunction with shown in Figure 3, insulating cylinder 1 top is formed with fixed contact installation portion 111, fixed contact installation portion 111 belows are formed with the installation cavity 112 of isolation knife insulated tension pole assembly, installation cavity 112 belows one side of isolation knife insulated tension pole assembly is formed with vacuum interrupter installation cavity 113, and the installation cavity 112 below opposite sides of isolation knife insulated tension pole assembly are formed with pull bar loose slot 114.Fixed contact 3 and last busbar 2 are installed on the described fixed contact installation portion 111 by first screw 4.Isolation knife 7 is arranged on the top of described vacuum interrupter installation cavity 113, isolation knife 7 upper ends are provided with isolation knife contact installation portion 74, the middle part is provided with connecting rod connecting portion 75, the lower end is provided with connecting portion 76 under the isolation knife, whole isolated cutter 7 is made of isolation knife contact 71 (being arranged on isolation knife contact installation portion 74 places), isolation tool arm 72 and isolation knife insulation crust 73, and described isolation knife contact 71 is a plum blossom shape contact.Described isolation knife insulated tension pole assembly comprises connecting rod 51, connecting lever 52 and pull bar 53, and connecting rod 51 1 ends connect the connecting rod connecting portion 75 of isolation knife 7, and the other end connects an end of connecting lever 52, the downward cylinder lever connecting rod 53 of the other end of connecting lever 52.Vacuum interrupter 13 is installed in the described vacuum interrupter installation cavity 113, and vacuum interrupter installation cavity 113 front end faces are provided with opening, and this opening part is installed an insulation cover plate 12.Vacuum interrupter 13 lower ends are connected with the mechanism 14 that is flexible coupling; Conducting block 10 is arranged on described vacuum interrupter installation cavity top, conducting block 10 lower ends are connected with vacuum interrupter 13 upper ends by second screw 11, conducting block 10 upper ends are formed with two clamping plate 108, offer the rotating shaft installing hole on two clamping plate 108, offer the rotating shaft mating holes under the isolation knife of described isolation knife 7 on the connecting portion 76, connecting portion 76 is installed between two clamping plate 108 under the isolation knife, by rotating shaft 9 conducting block 10 and isolation knife 7 is connected in hinged way.Wherein, connecting portion 76 all offers annular groove 761 under the isolation knife of isolation knife 7 on two end faces of two clamping plate 108, and on two inner side ends of two clamping plate 108, offer annular groove accordingly, two conduction springs 8 are installed in respectively in this two annular groove 761, make assembling back two conduction springs 8 form flexible the contact respectively with the following connecting portion 76 of described two clamping plate, 108 inner surfaces and isolation knife.In order to make conducting block to external insulation, two insulation shells 19 also are provided, be installed in respectively on described two clamping plate 108, two clamping plate 108 part is outwardly covered and insulate.
As shown in Figure 3, whole vacuum load switch comprises that also fuse clip reaches fixedly copper bar 15, following fuse clip reaches fixedly copper bar 17, following busbar 18, arc control device insulated tension pole assembly, insulating cover 16 and operating-controlling mechanism 21, insulating cover 16 is arranged on the below of insulating cylinder 1, described arc control device insulated tension pole assembly is arranged in the insulating cover and (belongs to prior art, not shown in the figures), described arc control device insulated tension pole assembly and described pull bar all are connected with operating-controlling mechanism and (belong to prior art, repeat no more) herein, last fuse clip reaches fixedly, and copper bar 15 is connected with the mechanism 14 that is flexible coupling, following fuse clip reaches fixedly, and copper bar 17 is arranged on insulating cover 16 lower ends, following busbar 18 and following fuse clip and fixedly copper bar 17 is connected, go up fuse clip during use and reach fixedly copper bar 15 and following fuse clip and reach and fixedly between the copper bar 17 fuse is set.
The course of action of the vacuum load switch that present embodiment provides is described below: (1) isolation knife making process: operating-controlling mechanism 21 drives pull bars 53 and moves downward, driving connecting lever 52 rotates, and then drivening rod 51 motions, the isolation knife contact 71 that makes is drawn close and is engaged with fixed contact 3 to fixed contact 3; (2) isolation knife separating brake process: operating-controlling mechanism 21 drives pull bar 53 and moves upward, and drive connecting lever 52 and rotate, and then drivening rod 51 motions, make isolation knife contact 71 break away from fixed contact; (3) on-load switch making process: operating-controlling mechanism 21 drives arc control device insulated tension pole assembly and moves upward, and the lower moving contact that drives arc control device contacts with the upper static contact (not shown); (4) on-load switch separating brake process: operating-controlling mechanism 21 drives arc control device insulated tension pole assembly and moves downward, and drives lower moving contact and separates with upper static contact.The galvanic circle is: go up busbar 2, fixed contact 3, isolation knife 7, conducting block 10, vacuum interrupter 13, the mechanism 14 that is flexible coupling, go up fuse clip and fixedly copper bar 15, fuse, fuse clip and fixedly copper bar 17, following busbar 18 down.
The utility model is by the upper end clamping plate type structure Design of conducting block, connect by rotating shaft, make the lower end and the conducting block of isolation knife be articulated and connected, and two conduction springs 8 are set between connecting portion 76 and two clamping plate 108 under isolation knife, improved the electric property of isolation knife and prolonged useful life.When on-load switch cut-off, can see that isolation knife has significantly cut-off distance, has prolonged useful life like this, has reduced failure rate.In addition, by the conduction spring is set, electric property is better, even if because the insulating part parts also can be owing to insulation distance makes fault expansion inadequately when minor failure occurring.
In the utility model; open in the dead ahead of the vacuum interrupter installation cavity of insulating cylinder; be convenient to the installation and the maintenance of vacuum interrupter and main circuit thereof; vacuum interrupter and main circuit thereof install the back and seal insulating cylinder with insulation cover plate 12, and vacuum interrupter is just protected safely in the insulating cylinder the inside.Compare with the most exposed on-load switches of (admittedly except envelope type) outside of vacuum interrupter, vacuum interrupter safety is a lot of when transportation, Installation and Debugging, and particularly its insulation property can significantly improve when surrounding air environment is relatively more abominable.

Claims (6)

1. novel evacuated on-load switch comprises insulating cylinder, fixed contact, goes up busbar, isolation knife, vacuum interrupter, the mechanism that is flexible coupling, isolation knife insulated tension pole assembly, goes up fuse clip and fixedly copper bar, fuse clip and fixedly copper bar, following busbar, arc control device insulated tension pole assembly, insulating cover and operating-controlling mechanism down; The insulating cylinder top is formed with the fixed contact installation portion, fixed contact installation portion below is formed with the installation cavity of isolation knife insulated tension pole assembly, installation cavity below one side of isolation knife insulated tension pole assembly is formed with the vacuum interrupter installation cavity, and the installation cavity below opposite side of isolation knife insulated tension pole assembly is formed with the pull bar loose slot; Fixed contact and last busbar are installed on the described fixed contact installation portion by first screw, isolation knife is arranged on the top of described vacuum interrupter installation cavity, the isolation knife upper end is provided with isolation knife contact installation portion, the lower end is provided with connecting portion under the isolation knife, and the middle part is provided with the connecting rod connecting portion; Isolation knife insulated tension pole assembly comprises connecting rod, connecting lever and pull bar, and connecting rod one end connects the connecting rod connecting portion of isolation knife, and the other end connects an end of connecting lever, the downward cylinder lever connecting rod of the other end of connecting lever; Described insulating cover is arranged on the below of described insulating cylinder, and described arc control device insulated tension pole assembly is arranged in the insulating cover, and described arc control device insulated tension pole assembly and described pull bar all are connected with operating-controlling mechanism; Vacuum interrupter is installed in the described vacuum interrupter installation cavity, the vacuum interrupter lower end is connected with the mechanism that is flexible coupling, be flexible coupling mechanism and then connect to go up fuse clip and fixing copper bar, following fuse clip and fixedly copper bar be arranged on the insulating cover lower end, described under busbar reach fixedly with following fuse clip that copper bar is connected; It is characterized in that, also comprise conducting block, be arranged on described vacuum interrupter installation cavity top, this conducting block lower end is connected with vacuum interrupter, and the upper end is connected with connecting portion articulated manner under the described isolation knife.
2. novel evacuated on-load switch according to claim 1 is characterized in that: described vacuum interrupter installation cavity front end face is provided with opening, and this opening part is installed an insulation cover plate.
3. novel evacuated on-load switch according to claim 1, it is characterized in that: described conducting block upper end is connected with connecting portion articulated manner under the described isolation knife, be specially: the conducting block upper end is formed with two clamping plate, offer the rotating shaft installing hole on two clamping plate, offer the rotating shaft mating holes under the described isolation knife on the connecting portion, connecting portion is installed between two clamping plate under the isolation knife, by rotating shaft conducting block and isolation knife articulated manner is connected.
4. novel evacuated on-load switch according to claim 3, it is characterized in that: all offer annular groove on two of connecting portion end faces under the described isolation knife, and on two inner side ends of conducting block two clamping plate, offer annular groove accordingly, two conduction springs are installed in respectively in this two annular groove, make assembling back two conduction springs form flexible the contact with the following connecting portion of described two clamping plate inner surfaces and isolation knife.
5. novel evacuated on-load switch according to claim 1 is characterized in that: also comprise two insulation shells, be installed in respectively on described two clamping plate, two clamping plate part is outwardly covered and insulate.
6. novel evacuated on-load switch according to claim 1 is characterized in that: described isolation knife is made of isolation knife contact, isolation tool arm and isolation knife insulation crust; Described isolation knife contact is a plum blossom shape contact.
CNU2008200490284U 2008-06-11 2008-06-11 Novel vacuum loaded switch Expired - Fee Related CN201215783Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200490284U CN201215783Y (en) 2008-06-11 2008-06-11 Novel vacuum loaded switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200490284U CN201215783Y (en) 2008-06-11 2008-06-11 Novel vacuum loaded switch

Publications (1)

Publication Number Publication Date
CN201215783Y true CN201215783Y (en) 2009-04-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200490284U Expired - Fee Related CN201215783Y (en) 2008-06-11 2008-06-11 Novel vacuum loaded switch

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101834088B (en) * 2010-05-12 2012-07-04 山东泰开真空开关有限公司 Vacuum arc-extinguishing device for ultrahigh-voltage isolation
CN105590810A (en) * 2014-10-23 2016-05-18 苏州市吴中区欣鑫开关配件厂 Conducting rod for high-voltage breaker and processing method thereof
CN106816341A (en) * 2017-03-16 2017-06-09 温州开元集团有限公司 A kind of insulating base and vacuum load switch fuse combined electrical apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101834088B (en) * 2010-05-12 2012-07-04 山东泰开真空开关有限公司 Vacuum arc-extinguishing device for ultrahigh-voltage isolation
CN105590810A (en) * 2014-10-23 2016-05-18 苏州市吴中区欣鑫开关配件厂 Conducting rod for high-voltage breaker and processing method thereof
CN106816341A (en) * 2017-03-16 2017-06-09 温州开元集团有限公司 A kind of insulating base and vacuum load switch fuse combined electrical apparatus

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090401

Termination date: 20150611

EXPY Termination of patent right or utility model