CN210272178U

CN210272178U - Environment-friendly gas-insulated vacuum circuit breaker for electrified railway

Info

Publication number: CN210272178U
Application number: CN201920538898.6U
Authority: CN
Inventors: 何宏国; 周长江; 姚夕平; 邓云川; 许晓蓉; 肖琨; 唐元方; 曹毅峰; 王静; 汪秋宾; 贺毅; 阙明; 代文平; 王志强; 刘春凤; 杨莉莉; 乔栋
Original assignee: Xidian Baoji Electric Co ltd; Sichuan Aiderui Electrical Co ltd
Current assignee: Xidian Baoji Electric Co ltd; Sichuan Aiderui Electrical Co ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-04-07
Anticipated expiration: 2029-04-19

Abstract

The utility model provides an electronic railway is with gaseous insulation vacuum circuit breaker of environmental protection, including the vacuum circuit breaker body with add the air cock, the box still has, nonrust corrugated steel pipe, it installs in the upper right middle part trompil outside of box to add the air cock, input wiring stake is installed in box upper end middle part trompil upper end, many output wiring stake is installed respectively admittedly in a plurality of trompils upper ends in box lower extreme middle part, insulating sleeve installs the right side in the box, there is aluminum plate at box right side outside end mid-mounting, there is the sheet rubber at the right side end cover of insulating pull rod, the right-hand member of bellows left end and insulating pull rod links together, ring flange fixed mounting is at the aluminum plate right side end, the trace of electronic or manual operation mechanism and the right side end fixed mounting of outer screw rod. This novel can effectively overcome external humid air, high temperature, dust or rainwater and lead to electrical component insulating properties to descend in the past for a long time, prevented to lead to work unreliable and influence life because of insulating properties descends.

Description

Environment-friendly gas-insulated vacuum circuit breaker for electrified railway

Technical Field

The utility model relates to a high-voltage electrical equipment field, especially an environmental protection gas insulation vacuum circuit breaker for electrified railway.

Background

The vacuum circuit breaker for the electrified railway is electrical equipment widely applied to the electrified railway and plays the roles of controlling the output and disconnection of the line and protecting the safety of power supply. The main structure of the existing vacuum circuit breaker comprises an insulating pull rod with a contact spring, a movable conductive support, a vacuum arc-extinguishing chamber, a static conductive support, an insulating sleeve, an input wiring pile and an output wiring pile The output wiring pile is connected through a wire, and the input wiring pile and the output wiring pile are respectively connected with the movable conductive support and the static conductive support through wires), so that the function of controlling the input power supply and the output power supply to be opened or closed is achieved.

The existing vacuum circuit breaker for the electrified railway is particularly applied to areas with humid, high temperature, large dust or open air, and the insulation performance of the electrical parts of the equipment is reduced, the service life is influenced, and the operation is unreliable (for example, the insulation part is reduced to cause tripping, etc.). In view of the above, it is particularly necessary to provide a vacuum circuit breaker for an electrified railway, which can effectively reduce the exposure of components to the air and reduce the failure probability.

Disclosure of Invention

In order to overcome the drawback that current vacuum circuit breaker for electric railway exists because of the structure limit, the utility model provides an install inside the box with electric parts is whole to fill protective nitrogen gas or dry air in the box is inside, electric operating mechanism or manual work are when operating mechanism drives the insulating pull rod seesaw of contact spring, can not lead to outside air and the inside circulation of air of box, can effectively overcome outside humid air, high temperature, dust or rainwater lead to electric part insulating properties to descend in the past for a long time, prevented to lead to work unreliable because of insulating properties descends, and influence life's an environmental protection gas insulation vacuum circuit breaker for electric railway.

The utility model provides a technical scheme that its technical problem adopted is:

an environment-friendly gas-insulated vacuum circuit breaker for an electrified railway comprises a vacuum circuit breaker body and a gas adding nozzle, and is characterized by also comprising a box body and a metal corrugated pipe, wherein the upper part and the middle part of the right front end of the box body are respectively provided with an opening, the middle part of the upper end and the middle part of the lower end of the box body are respectively provided with an opening and a plurality of openings, the gas adding nozzle is fixedly arranged outside the opening of the upper right middle part of the box body, an input wiring pile is fixedly arranged at the upper end of the opening of the middle part of the upper end of the box body, a plurality of output wiring piles are respectively and fixedly arranged at the upper ends of the plurality of openings of the middle part of the lower end of the box body, the input wiring pile and the plurality of output wiring piles are respectively positioned at the inner side end part of the box body and are respectively connected with a movable conductive support and a static conductive, the right side end of the insulating sleeve is fixedly arranged in the middle of the right side in the box body, the middle part in the right side end of the insulating pull rod is provided with a section of internal thread, the middle part of the right side end of the box body is provided with a round aluminum plate, the middle part of the aluminum plate is provided with an opening, the left side and the right side of the corrugated pipe are respectively and fixedly provided with a separation plate, the middle part of each separation plate is provided with an opening, the middle inner side end of the middle part of the corrugated pipe is transversely provided with an external threaded rod, the left end of the external threaded rod is arranged with the middle opening of one separation plate at the left end of the corrugated pipe, the right end of the external threaded rod is arranged with the middle opening of one separation plate at the right end of the corrugated pipe, the leftmost side and the rightmost side of the external threaded rod are respectively positioned at the outer, the right side end cover at insulating pull rod has an annular sealing rubber piece, the bellows left end links together with the right-hand member of insulating pull rod, the left side of rubber piece is located sealing aluminum plate's right side end middle part, the annular flange dish cover is at bellows left side end division board right side end, annular flange dish fixed mounting is at aluminum plate right side end, the support frame is installed to annular flange dish right-hand member, electric operating mechanism or manual operating mechanism's trace and the right side end fixed mounting of outer screw rod are in the same place, the inside nitrogen gas or dry air of having added of box.

All parts of the vacuum circuit breaker body are insulated from the box body.

The outer diameter of the sealing rubber sheet is larger than that of the opening in the middle of the aluminum plate, the outer diameter of the isolation plate at the left end of the corrugated pipe is consistent with that of the sealing rubber plate, the outer diameter of the annular flange plate is larger than that of the isolation plate at the left end of the corrugated pipe, and the inner diameter of the annular flange plate is smaller than that of the isolation plate at the left end of the corrugated pipe.

The middle part of the sealing rubber sheet is provided with an opening, the right outer side end of the insulating pull rod is sleeved in the opening of the annular sealing rubber sheet, and the inner diameter of the opening of the sealing rubber sheet is smaller than the outer diameter of the right outer side end of the insulating pull rod.

The corrugated pipe is isolated from the outside by the isolation plates at the two side ends of the corrugated pipe.

The utility model has the advantages that: the utility model discloses it has dry air or nitrogen gas to fill in the box inside, can play good insulating effect to even take place gas leakage and can not lead to contaminated air yet, use environmental protection more. The linkage rod of the novel electric operating mechanism or manual operating mechanism is fixedly installed with the right side end of the external thread rod, the fixing mode is consistent with the fixing mode of the linkage rod of the existing vacuum circuit breaker and the electric operating mechanism or manual operating mechanism, and the subsequent operating method is also consistent. This is novel because all parts and the box of vacuum circuit breaker body are insulating, and sealing rubber piece and insulating pull rod in close contact with can not take place that the inside air of box escapes or outside air gets into in the box. The insulation device can effectively overcome the problem that the insulation performance of an electric part is reduced due to the fact that external humid air, high temperature, dust or rainwater is used for a long time, and the problem that the work is unreliable and the service life is influenced due to the reduction of the insulation performance is prevented. Based on the above, so the utility model discloses good application prospect has.

Drawings

The invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of a partial structure of the present invention.

Detailed Description

As shown in fig. 1 and 2, an environment-friendly gas insulated vacuum circuit breaker for an electric railway comprises a spring insulated pull rod 1 with a contact, a movable conductive support 2, a vacuum arc-extinguishing chamber 3, a static conductive support 4, a static conductive support 5, an insulating sleeve 6, an input wiring pile 7, four output wiring piles 8, a vacuum circuit breaker body 9 of an electric operating mechanism or a manual operating mechanism, and an air-adding nozzle 10 (the mounting mode among the spring insulated pull rod 1, the movable conductive support 2, the vacuum arc-extinguishing chamber 3, the static conductive support 4, the static conductive support 5, the insulating sleeve 6, the electric operating mechanism or the manual operating mechanism of the vacuum circuit breaker body 9 is consistent with the mounting and fixing mode of the existing vacuum circuit breaker, the left ends of the spring insulated pull rod 1 are connected with the operating rod of the vacuum arc-extinguishing chamber 3 through an insulating part, and the spring insulated pull rod 1 is insulated from the vacuum arc-, the box body 11 and the stainless steel corrugated pipe 12 are also provided, the upper part and the middle part of the right front end of the box body are respectively provided with an opening 111, the middle part and the middle part of the upper end and the lower end of the box body 11 are respectively provided with an opening 112 and four openings 113, the air adding nozzle 10 is fixedly arranged outside the opening 111 at the upper right middle part of the box body 11 through external threads at the outer side end of the air inlet pipe of the air adding nozzle 10 by a nut, the rear side of the air inlet pipe of the air adding nozzle 10 is positioned inside the box body 11, the air adding end at the front end of the air adding nozzle 10 is positioned at the outer side end of the box body 11, the input wiring pile 7 is provided with external threads, the input wiring pile 7 is fixedly arranged at the upper end of the opening 112 at the upper end of the box body by a nut, the lower end of the input wiring pile 7 is positioned inside the box body 11, the, the lower ends of four output wiring piles 8 are positioned at the outer side of a box body 11, the upper ends of the four output wiring piles 8 are positioned at the inner side of the lower end of the box body 11, the end parts of the input wiring piles 7 and the four output wiring piles 8 positioned at the inner side of the box body are respectively connected with a movable conductive support 2 and a static conductive support 4 through leads, the outer end parts of an external input power supply and the box body of the input wiring piles 7 are fixedly connected through screw nuts, the power input end of electric equipment and the outer end parts of the box body of the four output wiring piles 8 are respectively fixedly connected through screw nuts, the right side end of an insulating sleeve 6 is fixedly arranged at the middle part of the right side in the box body 11 through the screw nuts, an insulating pull rod 1 is positioned in the insulating sleeve 6, the middle part of the right side end of the insulating pull rod 1 is provided with a section of internal thread 101, the middle part of the right side, the left side and the right side of the corrugated pipe are respectively welded with a

separation plate

121 and 122, the middle part of each separation plate is provided with an opening, the inner side end of the middle part of the corrugated pipe 12 is transversely provided with an external thread rod 123, the left end of the external thread rod 123 and the middle opening of one separation plate 121 at the left end of the corrugated pipe are welded together, the right end of the external thread rod 123 and the middle opening of one separation plate 122 at the right end of the corrugated pipe are welded together, the leftmost side and the rightmost side of the external thread rod 123 are respectively positioned at the outer sides of the left end and the right end of the corrugated pipe 12, the middle part of the inner side end of the external thread rod 123 is provided with a section of internal thread 123-1, the right part of the insulating pull rod 1 is led out from the middle part of the right end of the box body 11 through the middle opening 111 at the right side end of the box body and the middle opening of the aluminum, the left end of a corrugated pipe 12 and the right end of an insulating pull rod 1 are connected together, the left side of a rubber sheet 14 is located in the middle of the right side end of a sealing aluminum plate 13, an annular flange 15 is sleeved at the right side end of a corrugated pipe left side end isolation plate 122, the annular flange 15 is installed at the right side end of the aluminum plate 13 through a screw nut, a support frame 15-1 is welded at the right side of the annular flange 15 (the whole equipment is conveniently installed in an electrical equipment box), the linkage rod of an electric operating mechanism or a manual operating mechanism and the inner middle internal thread 123-1 of the right side end of an external thread rod are fixedly installed together through screws, the linkage rod of the electric operating mechanism or the manual operating mechanism and the right side end of the external thread rod are fixedly installed together, and nitrogen or dry air is added into a box.

As shown in fig. 1 and 2, when the linkage rod of the electric operating mechanism or the manual operating mechanism moves left and right, the linkage rod drives the external threaded rod 123 inside the corrugated pipe 12 to move left and right, the external threaded rod 123 drives the spring insulation pull rod 1 with the contact to move left and right, and then the insulation pull rod 1 drives the operating rod of the vacuum arc-extinguishing chamber 3 to move left and right, so as to close or open the moving contact and the static contact inside the vacuum arc-extinguishing chamber 3 (the stainless steel corrugated pipe 12 has flexibility, and it can be ensured that the air leakage phenomenon cannot occur inside the stainless steel corrugated pipe 12 on the premise that the external threaded rod 123 drives the spring insulation pull rod 1 to move left and right). All the components of the vacuum interrupter body 9 are insulated from the case 1. The outer diameter of the sealing rubber sheet 14 is larger than that of the opening in the middle of the aluminum plate 13, the outer diameter of the isolation plate 121 at the left end of the corrugated pipe 12 is consistent with that of the sealing rubber sheet 14, the outer diameter of the annular flange 15 is larger than that of the isolation plate 123 at the left end of the corrugated pipe, and the inner diameter of the annular flange 15 is smaller than that of the isolation plate at the left end of the corrugated pipe 12. The middle part of the sealing rubber sheet 14 is provided with an opening, the right outer end of the insulating pull rod 1 is sleeved in the opening of the annular sealing rubber sheet 14, and the inner diameter of the opening of the sealing rubber sheet 14 is smaller than the outer diameter of the right outer end of the insulating pull rod 1. The bellows 12 is isolated from the outside by the bellows both side

end isolation plates

121 and 122. The ring flange 15 presses the seal rubber sheet 14 and the partition plate 121 at the left end of the bellows 12 against the right outer end of the aluminum plate 13.

Shown in fig. 1 and 2, the utility model discloses it has dry air or nitrogen gas to fill in advance in box 11 is inside, can play good insulating effect to even take place gas leakage and can not lead to contaminated air yet, use environmental protection more. The linkage rod of the novel electric operating mechanism or manual operating mechanism is fixedly installed with the right side end of the external thread rod, the fixing mode is consistent with the fixing mode of the linkage rod of the existing vacuum circuit breaker and the electric operating mechanism or manual operating mechanism, and the subsequent operating method is also consistent. During operation, the electric operating mechanism or the manual operating mechanism drives the contact spring insulating pull rod 1 to move left and right, and then the insulating pull rod 1 drives the operating rod of the vacuum arc-extinguishing chamber 3 to move left and right, so that the movable contact and the fixed contact in the vacuum arc-extinguishing chamber 3 are closed or disconnected, the opening or closing control between the power input through the movable conductive support 2 and the output power of the fixed conductive support 3 is realized, and the function of controlling the input power and the output power to be opened or closed is achieved. All parts of this novel vacuum circuit breaker body 9 are insulating with box 11, and sealed sheet rubber 14 and insulating pull rod 1 in close contact with can not take place in 11 inside air effluviums of box or outside air gets into box 11. The insulation device can effectively overcome the problem that the insulation performance of an electric part is reduced due to the fact that external humid air, high temperature, dust or rainwater is used for a long time, and the problem that the work is unreliable and the service life is influenced due to the reduction of the insulation performance is prevented. Based on the above, so the utility model discloses good application prospect has.

The basic principles and essential features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of being embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An environment-friendly gas-insulated vacuum circuit breaker for an electrified railway comprises a vacuum circuit breaker body and a gas adding nozzle, and is characterized by also comprising a box body and a metal corrugated pipe, wherein the upper part and the middle part of the right front end of the box body are respectively provided with an opening, the middle part of the upper end and the middle part of the lower end of the box body are respectively provided with an opening and a plurality of openings, the gas adding nozzle is fixedly arranged outside the opening of the upper right middle part of the box body, an input wiring pile is fixedly arranged at the upper end of the opening of the middle part of the upper end of the box body, a plurality of output wiring piles are respectively and fixedly arranged at the upper ends of the plurality of openings of the middle part of the lower end of the box body, the input wiring pile and the plurality of output wiring piles are respectively positioned at the inner side end part of the box body and are respectively connected with a movable conductive support and a static conductive, the right side end of the insulating sleeve is fixedly arranged in the middle of the right side in the box body, the middle part in the right side end of the insulating pull rod is provided with a section of internal thread, the middle part of the right side end of the box body is provided with a round aluminum plate, the middle part of the aluminum plate is provided with an opening, the left side and the right side of the corrugated pipe are respectively and fixedly provided with a separation plate, the middle part of each separation plate is provided with an opening, the middle inner side end of the middle part of the corrugated pipe is transversely provided with an external threaded rod, the left end of the external threaded rod is arranged with the middle opening of one separation plate at the left end of the corrugated pipe, the right end of the external threaded rod is arranged with the middle opening of one separation plate at the right end of the corrugated pipe, the leftmost side and the rightmost side of the external threaded rod are respectively positioned at the outer, the right side end cover at insulating pull rod has an annular sealing rubber piece, the bellows left end links together with the right-hand member of insulating pull rod, the left side of rubber piece is located sealing aluminum plate's right side end middle part, the annular flange dish cover is at bellows left side end division board right side end, annular flange dish fixed mounting is at aluminum plate right side end, the support frame is installed to annular flange dish right-hand member, electric operating mechanism or manual operating mechanism's trace and the right side end fixed mounting of outer screw rod are in the same place, the inside nitrogen gas or dry air of having added of box.

2. The environmentally friendly gas insulated vacuum circuit breaker for electric railway according to claim 1, wherein all parts of the vacuum circuit breaker body are insulated from the tank.

3. The environmentally friendly gas insulated vacuum circuit breaker for electric railways according to claim 1, wherein the outer diameter of the sealing rubber sheet is larger than the outer diameter of the opening in the middle of the aluminum plate, the outer diameter of the isolation plate at the left end of the bellows is the same as the outer diameter of the sealing rubber sheet, the outer diameter of the annular flange is larger than the outer diameter of the isolation plate at the left end of the bellows, and the inner diameter of the annular flange is smaller than the outer diameter of the isolation plate at the left end of the bellows.

4. The environmentally friendly gas insulated vacuum circuit breaker for electric railways according to claim 1, wherein the middle of the sealing rubber sheet has an opening, the right outer end of the insulating pull rod is sleeved in the opening of the annular sealing rubber sheet, and the inner diameter of the opening of the sealing rubber sheet is smaller than the outer diameter of the right outer end of the insulating pull rod.

5. The eco-friendly gas insulated vacuum circuit breaker for electric railway according to claim 1, wherein the inside of the bellows is isolated from the outside by isolation plates at both side ends of the bellows.