CN215451271U

CN215451271U - Circuit breaker suitable for environmental protection cabinet

Info

Publication number: CN215451271U
Application number: CN202122226133.9U
Authority: CN
Inventors: 郑如展; 陈明煌; 陈威; 薛昌繁; 周昌勇
Original assignee: Shenheng Electric Equipment Co ltd
Current assignee: Shenheng Electric Equipment Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-01-07
Anticipated expiration: 2031-09-14

Abstract

The utility model provides a circuit breaker suitable for an environment-friendly cabinet, which comprises: the vacuum arc extinguish chamber is provided with a static conductive rod and a movable conductive rod which are respectively arranged at two ends of the vacuum arc extinguish chamber, and the movable conductive rod is provided with a flexible connection structure; the isolating switch is arranged adjacent to the movable conducting rod and is provided with a movable contact suitable for being connected with the flexible connection; the conductive assembly is arranged in the frame mainly aiming at the design requirement of the compact circuit breaker of the environmental protection cabinet, so that the utilization rate of the internal space is greatly improved, and the integral electric field of the circuit breaker is optimized.

Description

Circuit breaker suitable for environmental protection cabinet

Technical Field

The utility model relates to the technical field of ring main units, in particular to a circuit breaker applicable to an environment-friendly cabinet.

Background

The ring main unit is an electrical device with a group of high-voltage switch devices arranged in a steel plate metal main unit body or made into an assembled interval ring main power supply unit, and the core part of the ring main unit adopts an isolating switch and a vacuum circuit breaker, so that the ring main unit has the advantages of simple structure, small volume, low price, power supply safety and the like, and is widely applied to load center distribution stations and box-type substations of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like.

An isolation switch 04 and a vacuum circuit breaker 08 of a prior ring main unit, as shown in fig. 1, the vacuum circuit breaker 08 includes a vacuum arc-extinguishing chamber 01, a static conductive rod 02 and a dynamic conductive rod 03 respectively disposed at two sides of the vacuum arc-extinguishing chamber 01, the isolation switch 04 is disposed at one side of the static conductive rod 02, the isolation switch 04 includes a static contact 05 connected to the static conductive rod 02, and a dynamic contact 06 contactably connected to or disconnected from the static contact 05, a flexible connection 07 is disposed on the dynamic conductive rod 03, the flexible connection 07 needs to be connected to a dynamic contact 06 of the isolation switch 04 through a cable, since the vacuum arc-extinguishing chamber 01 is disposed between the flexible connection 07 and the dynamic contact 06, it is inconvenient for the cable to be routed from the inner side of the frame of the vacuum arc-extinguishing chamber 01, in order to solve the above problems, the flexible connection 07 has a connection portion extending out of the outer side of the frame and adapted to be connected to the dynamic contact 06, but this greatly affects the uniformity of an electric field, and the safety is low.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the conductive structure cannot be installed inside the insulating supporting plate in the prior art, so that the breaker with higher safety and stronger electric field uniformity is provided and is suitable for the environment-friendly cabinet.

To this end, the present invention provides a circuit breaker suitable for an eco-friendly cabinet, comprising: the vacuum circuit breaker is provided with a frame body and a vacuum arc extinguish chamber arranged in the frame body, wherein the vacuum arc extinguish chamber is provided with a static conductive rod and a movable conductive rod which are respectively arranged at two ends of the vacuum arc extinguish chamber, and the movable conductive rod is provided with a flexible connection structure; the isolating switch is arranged adjacent to the movable conducting rod and is provided with a movable contact which is suitable for being connected with the soft connecting structure; and the conductive component is arranged in the frame body and is suitable for connecting the flexible connection structure and the moving contact.

Further: the conductive assembly comprises a copper bar connecting piece, one end of the copper bar connecting piece is connected with the flexible connecting structure, and the other end of the copper bar connecting piece is connected with the moving contact through a connecting plate.

Further: the frame body is internally provided with a shaft supporting plate, and the shaft supporting plate is fixedly connected with the side wall of the frame body.

Further: the copper bar connecting piece is provided with 2, the copper bar connecting piece includes link and the end of buckling, the link is "L" type structure setting with the end of buckling, adopts the even board that can electrically conduct to connect between the two copper bar connecting pieces that set up relatively, even board connection moving contact.

Further: the frame body is internally provided with a connecting plate, one end of the connecting plate, which is close to the moving contact, is provided with a clamping groove, and the clamping groove is used for enabling the copper bar connecting piece to pass and fixing the copper bar connecting piece.

Further: the end, far away from the clamping groove, of each of the two copper bar connecting pieces is connected through a flexible connecting structure, each flexible connecting structure comprises a flexible connecting piece, a circular groove is formed in the flexible connecting piece, and the circular groove is used for the movable conducting rod to penetrate through.

Further: be provided with on the copper bar connecting piece and dodge the groove, the copper bar connecting piece passes and dodges groove and soft connection piece fixed connection.

Further: the copper bar connecting piece is attached to the side wall of the frame body, the operating mechanism is further arranged inside the frame body, the operating mechanism is arranged at one end close to the movable conducting rod and connected with the movable conducting rod, the two connecting plates are arranged inside the frame body, and the frame body and the two connecting plates are enclosed to form an accommodating space capable of accommodating the operating mechanism.

Further: the operating mechanism comprises a main shaft and a crank arm, wherein a through groove is formed in the crank arm, the main shaft penetrates through the through groove to enable the main shaft to be fixedly connected with the crank arm, and the main shaft further penetrates through a shaft supporting plate to enable the shaft supporting plate to be fixedly connected with the main shaft.

Further: the outside cover of movable conducting rod is equipped with the over travel spring, over travel spring one end is contradicted with the soft connection piece, the movable conducting rod is close to the one end of vacuum interrupter and inserts in the vacuum interrupter and with vacuum interrupter sliding connection.

The technical scheme of the utility model has the following advantages:

1. according to the circuit breaker applicable to the environment-friendly cabinet, the isolating switch is arranged at one side adjacent to the movable conducting rod, namely the isolating switch and the flexible connection on the movable conducting rod are arranged adjacently, so that the wiring of the conducting assembly from the inner side of the frame body is facilitated, the moving contact and the flexible connection of the isolating switch are connected, compared with the mode that the isolating switch in the prior art is arranged at one side of the static conducting rod, and the cable for connecting the flexible connection and the moving contact of the isolating switch can only be wired from the outer side of the frame body due to the obstruction of a vacuum arc extinguish chamber, the uniformity of an electric field cannot be influenced, the shaft supporting plate can be effectively avoided by arranging the avoiding groove on the copper bar connecting piece, the copper bar connecting piece can be arranged inside the two insulating supporting plates, the copper bar connecting piece is prevented from being exposed and the outer ends of the insulating supporting plates, and the uniformity of the electric field can be effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic partial structural diagram of a ring main unit in the prior art;

fig. 2 is a schematic view of a part of the ring main unit according to the present invention;

fig. 3 is a partial structural schematic view of another angle of the ring main unit according to the present invention;

fig. 4 is a partial structural schematic view of another angle of the ring main unit according to the present invention;

fig. 5 is a top view of the ring main unit according to the present invention.

Description of reference numerals:

01. a vacuum arc-extinguishing chamber; 02. a static conductive rod; 03. a movable conductive rod; 04. an isolating switch; 05. static contact; 06. a moving contact; 07. soft connection; 08. a vacuum circuit breaker;

1. a vacuum circuit breaker; 11. a frame body; 12. a shaft support plate; 121. an avoidance groove; 13. a connecting plate; 14. a card slot; 2. a vacuum arc-extinguishing chamber; 21. a static conductive rod; 22. a movable conductive rod; 3. a flexible connection structure; 31. a soft connecting sheet; 4. an isolating switch; 5. a conductive component; 51. a copper bar connecting piece; 511. a connecting end; 512. bending the end; 52. connecting plates; 53. a moving contact; 6. an operating mechanism; 61. an over travel spring; 62. a main shaft; 63. a through groove 64 and a crank arm.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

This embodiment provides a circuit breaker suitable for environmental protection cabinet, includes: the vacuum circuit breaker 1 is provided with a frame body 11 and a vacuum arc extinguish chamber 2 arranged in the frame body 11, wherein the vacuum arc extinguish chamber 2 is provided with a static conductive rod 21 and a movable conductive rod 22 which are respectively arranged at two ends of the vacuum arc extinguish chamber, and the movable conductive rod 22 is provided with a flexible connection structure 3; a disconnector 4, arranged adjacent to said movable conductor bar 22, having a movable contact 53 adapted to be connected to said flexible connection structure 3; and the conductive component 5 is arranged in the frame body 11 and is suitable for connecting the flexible connecting structure 3 and the movable contact 53.

The specific improvement is as follows: as shown in fig. 3: inside vacuum interrupter 2 that sets up of

frame body

11, 2 one end of vacuum interrupter have and move conducting rod 22, one end has quiet conducting rod 21, isolator 4 is close to the one side setting of moving conducting rod 22, it has flexible connection structure on the conducting rod 22 to move, isolator 4 includes moving contact 53, set up conducting component 5 between flexible connection structure and the moving contact 53, conducting component 5 sets up the inside at frame body 11, not only can improve the homogeneity of electric field, can also improve the homogeneity of whole product.

On the basis of the above-described embodiment: the conductive component 5 comprises a copper bar connecting piece 51, one end of the copper bar connecting piece 51 is connected with the flexible connecting structure 3, and the other end is connected with a moving contact 53 through a connecting plate 52.

The specific improvement is as follows: as shown in fig. 3 and 4: conductive component 5 includes copper bar connecting piece 51, copper bar connecting piece 51 has set up a plurality ofly, and copper bar connecting piece 51 is hugged closely with frame body 11's inside wall, copper bar connecting piece 51 mainly plays electrically conductive effect, moving contact 53 is connected to copper bar connecting piece 51's one end, soft connection structure 3 is connected to one end in addition, thereby make the mechanism can form a complete circuit, soft connection structure 3 can be with copper bar connecting piece 51 integrated into one piece, but optimal implementation mode adopts screw fixed connection for soft connection structure 3 and copper bar connecting piece 51, so when soft connection structure 3 at the in-process of motion, just can not drive the motion of copper bar connecting piece 51.

On the basis of the above-described embodiment: a shaft supporting plate 12 is arranged in the frame body 11, and the shaft supporting plate 12 is fixedly connected with the side wall of the frame body 11.

The specific improvement is as follows: as shown in fig. 3: a shaft support plate 12 is arranged in the frame body 11, and the shaft support plate 12 is fixed with the side surface of the frame body 11 so as to effectively connect and fix the movable conducting rod 22.

On the basis of the above-described embodiment: the number of the copper bar connecting pieces 51 is 2, each copper bar connecting piece 51 comprises a connecting end 511 and a bent end 512, the connecting ends 511 and the bent ends 512 are arranged in an L-shaped structure, the two copper bar connecting pieces 51 which are oppositely arranged are connected through a connecting plate 52 capable of conducting electricity, and the connecting plate 52 is connected with a moving contact 53.

The specific improvement is as follows: as shown in fig. 5: copper bar connecting piece 51 is provided with 2, copper bar connecting piece 51 is including connecting link 511 and buckling end 512, link 511 is connected with moving contact 53, buckle end 512 and keep away axle supporting plate 12 and be connected with soft connection structure, the link 511 that sets up in relative both sides respectively with even board 52 both ends are connected, the end 512 of buckling that sets up in relative both sides is connected with soft connection structure's both ends respectively, copper bar connecting piece 51, even board 52 and soft connection structure three enclose into frame type structure.

On the basis of the above-described embodiment: a connecting plate 13 is arranged in the frame body 11, a clamping groove 14 is arranged at one end of the connecting plate 13 close to the moving contact 53, and the clamping groove 14 is used for enabling the copper bar connecting piece 51 to pass through and fixing the copper bar connecting piece 51.

The specific improvement is as follows: as shown in fig. 4: the connecting plate 13 has set up the draw-in groove 14 near the one end of moving contact 53, and draw-in groove 14 supplies to buckle end 512 and passes and be connected with link 511, through the setting of draw-in groove 14, can effectual confession buckle end 512 pass to can make link 511 fixed, provide the holding power for link 511.

On the basis of the above-described embodiment: the ends, far away from the clamping grooves 14, of the two copper bar connecting pieces 51 are connected through a flexible connecting structure 3, the flexible connecting structure 3 comprises a flexible connecting piece 31, a circular groove is formed in the position of the flexible connecting piece 31, and the circular groove is used for the conductive rod 22 to penetrate through.

The specific improvement is as follows: as shown in fig. 5: the flexible connection structure 3 comprises a flexible connection sheet 31, the flexible connection sheet 31 can be penetrated by the movable conducting rod 22, and through the arrangement of the flexible connection sheet 31, a movable space can be provided for the movable conducting rod 22.

On the basis of the above-described embodiment: be provided with on the copper bar connecting piece 51 and dodge groove 121, the copper bar connecting piece 51 passes and dodges groove 121 and soft connection piece 31 fixed connection.

The specific improvement is as follows: as shown in fig. 4: be provided with on the copper bar connecting piece 51 and dodge groove 121, through dodging seting up of groove 121, can make copper bar connecting piece 51 avoid axle support plate 12 and connect soft connection piece 31, so copper bar connecting piece 51 just can set up in frame body 11.

On the basis of the above-described embodiment: copper bar connecting piece 51 and the laminating of 11 lateral walls of frame body, frame body 11 is inside still to be provided with operating device 6, operating device 6 sets up in the one end that is close to moving conducting rod 22 and is connected with moving conducting rod 22, and connecting plate 13 is provided with two, and two connecting plates 13 are located inside frame body 11, and frame body 11 and two connecting plates 13 enclose to establish the accommodation space that forms and can hold operating device 6.

The specific improvement is as follows: as shown in fig. 4: frame body 11 is inside still to be provided with operating device 6, operating device 6's the effect lies in adjusting the position of moving conducting rod 22, thereby accomplish the over travel regulation, connecting plate 13 has set up two and two connecting plates 13 all are perpendicular with frame body 11 (two connecting plates 13 enclose into rectangle or square with frame body 11 and are used for holding operating space, and two connecting plates 13 are used for supporting copper bar connecting piece 51, another is used for supporting vacuum interrupter 2), consequently, setting through connecting plate 13, can effectual support vacuum interrupter 2 and copper bar connecting piece 51.

On the basis of the above-described embodiment: the operating mechanism 6 comprises a main shaft 62 and a crank arm 64, wherein the crank arm 64 is provided with a through groove 63, the main shaft 62 penetrates through the through groove 63 to fixedly connect the main shaft 62 with the crank arm 64, and the main shaft 62 also penetrates through the shaft support plate 12 to fixedly connect the main shaft support plate with the main shaft 62.

The specific improvement is as follows: as shown in fig. 4: the operating mechanism 6 comprises a main shaft 62 and a crank arm 64, and when the main shaft 62 rotates, the crank arm 64 is driven to crank, and the crank arm 64 cranks to drive the conductive rod 22 to move so as to adjust the over travel.

On the basis of the above-described embodiment: move the outside cover of conducting rod 22 and be equipped with overtravel spring 61, overtravel spring 61 one end is contradicted with soft connection piece 31, move conducting rod 22 and be close to vacuum interrupter 2 one end insert in vacuum interrupter 2 and with vacuum interrupter 2 sliding connection.

The specific improvement is as follows: as shown in fig. 4: move the outside cover of conducting rod 22 and be equipped with overtravel spring 61, after connecting lever 64 turned, move conducting rod 22 and stretch, overtravel spring 61 was compressed this moment, resets when connecting lever 64, moves conducting rod 22 and removes towards one side of vacuum interrupter 2, and spring release elastic potential energy this moment through the setting of overtravel spring 61, can provide the helping hand when moving conducting rod 22 and removing towards vacuum interrupter 2 one side.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A circuit breaker suitable for an environmental protection cabinet, comprising:

the vacuum circuit breaker (1) is provided with a frame body (11) and a vacuum arc-extinguishing chamber (2) arranged in the frame body (11), the vacuum arc-extinguishing chamber (2) is provided with a static conducting rod (21) and a movable conducting rod (22) which are respectively arranged at two ends of the vacuum arc-extinguishing chamber, and the movable conducting rod (22) is provided with a flexible connection structure (3);

a disconnector (4) arranged adjacent to said moving conductor bar (22) and having a moving contact (53) suitable for being connected to said flexible connection structure (3);

and the conductive component (5) is arranged in the frame body (11) and is suitable for connecting the flexible connection structure (3) and the movable contact (53).

2. The circuit breaker suitable for environmental protection cabinet of claim 1, wherein: the conductive assembly (5) comprises a copper bar connecting piece (51), one end of the copper bar connecting piece (51) is connected with the flexible connecting structure (3), and the other end of the copper bar connecting piece is connected with the moving contact (53) through a connecting plate (52).

3. The circuit breaker suitable for environmental protection cabinet of claim 2, wherein: a shaft supporting plate (12) is arranged in the frame body (11), and the shaft supporting plate (12) is fixedly connected with the side wall of the frame body (11).

4. The circuit breaker of any one of claims 2 or 3, wherein: the copper bar connecting piece (51) is provided with 2, the copper bar connecting piece (51) includes link (511) and end (512) of buckling, link (511) and end (512) of buckling are the setting of "L" type structure, adopt between the copper bar connecting piece (51) of double-phase relative setting can electrically conduct even board (52) to connect, even board (52) connection moving contact (53).

5. The circuit breaker suitable for environmental protection cabinet of claim 4, wherein: the connecting plate (13) is arranged in the frame body (11), one end, close to the moving contact (53), of the connecting plate (13) is provided with a clamping groove (14), and the clamping groove (14) is used for enabling the copper bar connecting piece (51) to penetrate through and is used for fixing the copper bar connecting piece (51).

6. The circuit breaker suitable for environmental protection cabinet of claim 5, wherein: one end, far away from the clamping groove (14), of each of the two copper bar connecting pieces (51) is connected through a flexible connecting structure (3), each flexible connecting structure (3) comprises a flexible connecting piece (31), a circular groove is formed in the flexible connecting piece (31), and the circular groove is used for the conductive rod (22) to penetrate.

7. The circuit breaker suitable for environmental protection cabinet of claim 6, wherein: be provided with on copper bar connecting piece (51) and dodge groove (121), copper bar connecting piece (51) pass and dodge groove (121) and soft connection piece (31) fixed connection.

8. The circuit breaker suitable for environmental protection cabinet of claim 7, wherein: copper bar connecting piece (51) and the laminating of frame body (11) lateral wall, frame body (11) inside still is provided with operating device (6), operating device (6) set up in the one end that is close to and moves conducting rod (22) and with move conducting rod (22) and be connected, and connecting plate (13) are provided with two, and inside two connecting plates (13) were located frame body (11), frame body (11) and two connecting plates (13) were enclosed and are established the accommodation space that forms and can hold operating device (6).

9. The circuit breaker of claim 8, wherein: the operating mechanism (6) comprises a main shaft (62) and a crank arm (64), wherein a through groove (63) is formed in the crank arm (64), the main shaft (62) penetrates through the through groove (63) to enable the main shaft (62) to be fixedly connected with the crank arm (64), and the main shaft (62) further penetrates through the shaft supporting plate (12) to enable the shaft supporting plate (12) to be fixedly connected with the main shaft (62).

10. The circuit breaker adapted for an environmentally friendly cabinet according to claim 9, wherein: move conducting rod (22) outside cover and be equipped with overtravel spring (61), overtravel spring (61) one end is contradicted with soft connection piece (31), move conducting rod (22) one end near vacuum interrupter (2) insert in vacuum interrupter (2) and with vacuum interrupter (2) sliding connection.