CN216928381U

CN216928381U - Outdoor solid-sealed circuit breaker

Info

Publication number: CN216928381U
Application number: CN202220486003.0U
Authority: CN
Inventors: 束明亮
Original assignee: Jiangsu Hongda Electric Co ltd
Current assignee: Jiangsu Hongda Electric Co ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-07-08
Anticipated expiration: 2032-03-08

Abstract

The utility model discloses an outdoor solid-sealed circuit breaker, which comprises an isolation contact box, a solid-sealed vacuum arc-extinguishing chamber and a conductive piece box which are sequentially connected; an isolation movable end, an isolation static end and a conductive flexible connection are arranged in the isolation contact box; the conductive bar and the conductive bar are arranged in the conductive piece box; the fixedly sealed vacuum arc extinguish chamber comprises an arc extinguish chamber movable end and an arc extinguish chamber static end; the upper end of the conductive flexible connection is fixedly connected with the isolated static end through a first fastener, and the lower end of the conductive flexible connection is connected with the movable end head of the arc extinguish chamber; one end of the conducting bar is fixedly connected to the conducting rod through a second fastening piece, and the other end of the conducting bar is fixedly connected to the static end of the arc extinguish chamber through a third fastening piece; the isolation contact box, the solid-sealed vacuum arc-extinguishing chamber and the conductive piece box are all sealed by sealing elements. The utility model can effectively prevent the fastener from loosening and reduce the adjustment links; the influence of the external environment on the isolating switch or the circuit breaker is prevented, and the circuit breaker is particularly suitable for places with severe outdoor environment.

Description

Outdoor solid-sealed circuit breaker

Technical Field

The utility model relates to the technical field of solid-sealed circuit breakers, in particular to an outdoor solid-sealed circuit breaker.

Background

With the popularization of electric power and urban construction, the box-type transformer substation for wind power and photovoltaic projects has small occupied area, large transformer capacity and sharply increased use requirements, and the application of the solid-sealed circuit breaker is more and more extensive. The solid-sealed circuit breaker ensures creepage distance and insulating property, so the volume is smaller, the space is saved, the impact and collision influence on the vacuum arc extinguish chamber can be effectively protected, the environment pollution resistance is strong, and the solid-sealed circuit breaker can be used under the severe environment. Compared with the traditional assembled pole, the solid-sealed pole has the advantages that the number of parts of the solid-sealed pole is greatly reduced, the structure is simple, the installation is convenient, the manufacturing process of the circuit breaker is simplified, and the reliability and the stability of the circuit breaker are greatly improved.

The vacuum arc-extinguishing chamber in the solid-sealed circuit breaker is embedded into the epoxy resin insulating material, the original gas insulation is changed into solid insulation, and the solid-sealed polar pole can achieve high insulation strength, so that the miniaturization design of the circuit breaker and the switch cabinet is facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an outdoor fixed-seal circuit breaker, which solves the problems that a fastener is loosened and an external environment influences a disconnecting switch or a circuit breaker.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

an outdoor solid-sealed circuit breaker comprises an isolation contact box, a solid-sealed vacuum arc-extinguishing chamber and a conductive piece box which are sequentially connected; an isolation movable end, an isolation static end and a conductive flexible connection are arranged in the isolation contact box; the conductive bar and the conductive bar are arranged in the conductive piece box; the solid-sealed vacuum arc extinguish chamber comprises an arc extinguish chamber movable end and an arc extinguish chamber static end;

the upper end of the conductive flexible connection is fixedly connected to the isolated static end through a first fastener, and the lower end of the conductive flexible connection is connected with the movable end of the arc extinguish chamber through a connecting screw rod;

one end of the conducting bar is fixedly connected to the conducting rod through a second fastening piece, and the other end of the conducting bar is fixedly connected to the static end of the arc extinguish chamber through a third fastening piece;

the isolation contact box, the fixed-sealing vacuum arc-extinguishing chamber and the conductive piece box are sealed through sealing pieces, and the sealing pieces are fixedly sealed with a first fastening piece, a second fastening piece and a third fastening piece.

Preferably, aforementioned outdoor solid circuit breaker that seals, connecting screw is equipped with the contact pressure spring, the contact pressure spring is used for through elastic force, when the circuit breaker is closed a floodgate, makes reliable electrical contact between explosion chamber movable end and the quiet end of explosion chamber.

Preferably, in the outdoor fixed-seal circuit breaker, the fastener is a bolt, and the fastener is a bolt.

Preferably, in the outdoor sealed circuit breaker, the sealing element is epoxy resin or ethylene propylene diene monomer.

Preferably, in the outdoor sealed circuit breaker, the conductive component box is connected to the outgoing line terminal through the conductive rod, and the isolation contact box is connected to the incoming line terminal through the isolation moving end.

Preferably, in the outdoor sealed circuit breaker, one end of the connecting screw is connected to the central shaft, and the central shaft is used for connecting to the driving member.

Preferably, the driving piece is equipped with the drive arc groove, and the center pin is connected to the drive arc groove, the circular arc at drive arc groove both ends is different to the distance of circuit breaker main shaft, and wherein one end is nearer apart from the circuit breaker main shaft, and the other end is far away from the circuit breaker main shaft, the circuit breaker main shaft passes circuit breaker connecting lever and driving piece and is connected in the frame, the circuit breaker connecting lever passes through the square hole and connects in the circuit breaker main shaft, and the circuit breaker connecting lever is equipped with the draw-in groove that is used for the joint center pin, the draw-in groove moves the flexible direction phase-match at end with the explosion chamber.

Preferably, in the outdoor sealed circuit breaker, a bearing is arranged at a joint of the central shaft and the driving part, and the central shaft is in rolling connection with the driving arc groove through the bearing.

Preferably, aforementioned outdoor solid circuit breaker that seals, the circuit breaker connecting lever is connected in the location axle, and the circuit breaker connecting lever is equipped with branch one and branch two, and branch one and branch two are located the both sides of center pin respectively.

Preferably, in the outdoor sealed circuit breaker, the upper end of the frame is connected with an isolation main shaft, the isolation main shaft is connected with an isolation crank arm, and a long hole is formed in the other end of the isolation crank arm; the moving contact of keeping apart the end passes through the drive pin and connects the slot hole, it is equipped with positioner to keep apart the main shaft, positioner includes the elastic pin, set up in the positioning disk of keeping apart the main shaft, the elastic pin is installed in the frame, and the positioning disk is connected to the elastic output end, positioner is used for keeping apart the angle that the turning arm locking was kept apart the end disconnection or switched on, the positioning disk is equipped with at least two and keeps apart the end disconnection or switch on position assorted constant head tank, the constant head tank is used for joint elastic pin.

According to the technical scheme, the utility model has the following beneficial effects:

the utility model can effectively improve the electrical insulation level, has small volume, prevents the fastener from loosening and reduces the adjustment links; the device can prevent the influence of external environment such as moisture, dust, small animals and the like on the isolating switch or the circuit breaker, and is particularly suitable for places with severe outdoor environment, such as metallurgical plants and plateau areas.

Drawings

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

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a sectional view taken along the line A-A in the schematic top view;

fig. 4 is a schematic structural view of a crank arm portion of the circuit breaker of the present invention;

FIG. 5 is a schematic view of the isolated spindle section of the present invention;

FIG. 6 is an enlarged schematic view of the resilient pin portion of the present invention;

the meaning of the reference numerals: 1. a frame; 2. an incoming terminal; 3. an outlet terminal; 4. a conductive rod; 5. a conductive bar; 6. a static end of the arc extinguish chamber; 7. a movable end of the arc extinguish chamber; 8. connecting a screw rod; 9. a contact pressure spring; 10. a breaker crank arm; 101. branching one; 102. a branch II; 11. a circuit breaker main shaft; 12. isolating the main shaft; 13. isolating the crank arm; 131. a long hole; 132. a drive pin; 14. isolating the movable end; 15. isolating the static end; 16. conducting flexible connection; 17. a conductive member case; 18. fixedly sealing the vacuum arc-extinguishing chamber; 19. isolating the contact box; 20. a drive member; 21. driving the arc groove; 22. a central shaft; 23. a square hole; 24. a card slot; 25. an elastic pin; 26. positioning a plate; 27. and (6) positioning a groove.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 6, the utility model discloses an outdoor solid-sealed circuit breaker, which comprises an isolation contact box 19, a solid-sealed vacuum arc-extinguishing chamber 18 and a conductive piece box 17 which are connected in sequence; an isolation movable end 14, an isolation static end 15 and a conductive flexible connection 16 are arranged in the isolation contact box 19; the conductive piece box 17 is internally provided with a conductive rod 4 and a conductive bar 5; the fixedly sealed vacuum arc extinguish chamber 18 comprises an arc extinguish chamber movable end 7 and an arc extinguish chamber static end 6; the upper end of the conductive flexible connection 16 is fixedly connected to the isolation static end 15 through a first fastener, and the lower end of the conductive flexible connection 16 is connected with the movable end head 7 of the arc extinguish chamber through a connecting screw rod 8; one end of the conducting bar 5 is fixedly connected to the conducting rod 4 through a second fastening piece, and the other end of the conducting bar 5 is fixedly connected to the arc extinguish chamber static end 6 through a third fastening piece; the isolation contact box 19, the fixed-seal vacuum arc-extinguishing chamber 18 and the conductive piece box 17 are sealed through sealing elements, the sealing elements are made of epoxy resin or ethylene propylene diene monomer, and the sealing elements are fixedly sealed with a first fastening piece, a second fastening piece and a third fastening piece. The first fastener, the second fastener and the third fastener are all bolts.

Connecting screw 8 is equipped with contact pressure spring 9, contact pressure spring 9 makes the explosion chamber move between end 7 and the quiet end 6 of explosion chamber and contact and provide contact pressure, the one end of contact pressure spring 9 acts on the explosion chamber and moves end 7, and driving piece 20 is connected to the other end, and contact pressure spring 9 is used for providing reaction force when the circuit breaker is closed a floodgate and makes the explosion chamber move and satisfy reliable electrical contact between end 7 and the quiet end 6 of explosion chamber. The conductive piece box 17 is connected with the outgoing line terminal 3 through the conductive rod 4, and the isolating contact box 19 is connected with the incoming line terminal 2 through the isolating movable end 14. One end of the connecting screw 8 is connected to a central shaft 22, and the central shaft 22 is used for connecting the driving member 20.

Driving piece 20 is equipped with drive arc groove 21, and drive arc groove 21 connects center pin 22, the circular arc at drive arc groove 21 both ends is different to circuit breaker main shaft 11's distance, and wherein one end is nearer apart from circuit breaker main shaft 11, and the other end is far away from circuit breaker main shaft 11, circuit breaker main shaft 11 passes circuit breaker connecting lever 10 and driving piece 20 and is connected in frame 1, circuit breaker connecting lever 10 connects in circuit breaker main shaft 11 through square hole 23, and circuit breaker connecting lever 10 is equipped with the draw-in groove 24 that is used for joint center pin 22, draw-in groove 24 moves the flexible direction phase-match of end 7 with the explosion chamber. The joint of the central shaft 22 and the driving member 20 is provided with a bearing, and the central shaft 22 is in rolling connection with the driving arc groove 21 through the bearing. The breaker crank arm 10 is connected to the breaker main shaft 11, the breaker crank arm 10 is provided with a first branch 101 and a second branch 102, and the first branch 101 and the second branch 102 are respectively positioned on two sides of the central shaft 22.

The upper end of the frame 1 is connected with an isolation main shaft 12, the isolation main shaft 12 is connected with an isolation crank arm 13, and the other end of the isolation crank arm 13 is provided with a long hole 131; the movable contact of the isolation moving end 14 is connected with the long hole 131 through the driving pin 132, the isolation main shaft 12 is provided with a positioning device, the positioning device comprises an elastic pin 25 and a positioning disc 26 arranged on the isolation main shaft 12, the elastic pin 25 is installed on the frame 1, the elastic output end is connected with the positioning disc 26, the positioning device is used for locking the isolation crank arm 13 at the angle of disconnection or conduction of the isolation moving end 14, the positioning disc 26 is provided with at least two positioning grooves 27 matched with the disconnection or conduction positions of the isolation moving end 14, and the positioning grooves 27 are used for clamping the elastic pin 25. The elastic pin 25 is screwed to the frame 1. The elasticity of the elastic pin 25 is adjustable, so that clamping fixation is facilitated. The isolation spindle 12 is rotatably connected to the frame 1. Each isolation connecting lever 13 is provided with two branches, the two branches of the isolation connecting lever 13 are respectively positioned at two sides of the isolation moving end 14, each branch is provided with a long hole 131, each isolation connecting lever 13 is provided with two long holes 131, and two ends of each long hole 131 are in smooth arc shapes and are matched with the shape of the driving pin 132.

When the breaker needs to be opened, the operating mechanism moves the central shaft 22 to the end, close to the breaker spindle 11, of the driving arc groove 21, the central shaft 22 drives the contact pressure spring 9 and the connecting screw rod 8 to move, so that the arc extinguish chamber movable end 7 is driven to move towards the direction of right side disconnection, the arc extinguish chamber movable end 7 is made to be far away from the arc extinguish chamber static end 6, and the breaker is quickly and effectively opened.

When the isolating switch is switched off, the isolating mechanism drives the rotating isolating main shaft 12, the isolating main shaft 12 drives the isolating crank arm 13 to swing, the driving pin 132 is located above the long hole 131, and drives the isolating movable end 14 to be disconnected from the isolating static end 15. After the opening operation is completed, the positioning device is started, and the elastic pin 25 is clamped in the positioning groove 27 matched with the opening position of the isolation moving end 14, so that the fixation is completed.

The utility model has the following beneficial effects:

It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims

1. An outdoor fixed-sealed circuit breaker is characterized by comprising an isolating contact box (19), a fixed-sealed vacuum arc-extinguishing chamber (18) and a conductive piece box (17) which are sequentially connected; an isolation movable end (14), an isolation static end (15) and a conductive flexible connection (16) are arranged in the isolation contact box (19); a conductive rod (4) and a conductive bar (5) are arranged in the conductive piece box (17); the solid-sealed vacuum arc extinguish chamber (18) comprises an arc extinguish chamber movable end (7) and an arc extinguish chamber static end (6);

the upper end of the conductive flexible connection (16) is fixedly connected to the isolation static end (15) through a first fastening piece, and the lower end of the conductive flexible connection (16) is connected with the movable end head (7) of the arc extinguish chamber through a connecting screw rod (8);

one end of the conducting bar (5) is fixedly connected to the conducting rod (4) through a second fastening piece, and the other end of the conducting bar (5) is fixedly connected to the arc extinguish chamber static end (6) through a third fastening piece;

the isolation contact box (19), the fixed-sealing vacuum arc-extinguishing chamber (18) and the conductive piece box (17) are sealed through sealing elements, and the sealing elements are fixedly sealed with the first fastening piece, the second fastening piece and the third fastening piece.

2. The outdoor solid-sealed circuit breaker according to claim 1, characterized in that the connecting screw (8) is provided with a contact pressure spring (9), and the contact pressure spring (9) is used for providing contact force between the arc-extinguishing chamber movable end (7) and the arc-extinguishing chamber static end (6) through elastic force.

3. The outdoor sealing circuit breaker of claim 1, wherein the fastener is a bolt, and the fastener is a bolt.

4. The outdoor sealing circuit breaker of claim 1, wherein the sealing element is epoxy resin or ethylene propylene diene monomer.

5. An outdoor sealed circuit breaker according to claim 1, characterized in that the conductive piece box (17) is connected with the outlet terminal (3) through the conductive rod (4), and the isolating contact box (19) is connected with the inlet terminal (2) through the isolating movable end (14).

6. An outdoor sealed circuit breaker according to claim 1, characterized in that one end of the connecting screw (8) is connected with a central shaft (22), and the central shaft (22) is used for connecting with the driving member (20).

7. The outdoor solid-sealed circuit breaker according to claim 6, characterized in that the driving member (20) is provided with a driving arc groove (21), the driving arc groove (21) is connected with the central shaft (22), the distance from the arcs at the two ends of the driving arc groove (21) to the main shaft (11) of the circuit breaker is different, one end of the driving arc groove is closer to the main shaft (11) of the circuit breaker, the other end of the driving arc groove is farther from the main shaft (11) of the circuit breaker, the main shaft (11) of the circuit breaker passes through the connecting lever (10) of the circuit breaker and the driving member (20) and is connected to the frame (1), the connecting lever (10) of the circuit breaker is connected to the main shaft (11) of the circuit breaker through a square hole (23), the connecting lever (10) of the circuit breaker is provided with a clamping groove (24) for clamping the central shaft (22), and the clamping groove (24) is matched with the expansion direction of the movable end (7) of the arc extinguish chamber.

8. The outdoor sealing circuit breaker according to claim 7, characterized in that a bearing is arranged at the connection of the central shaft (22) and the driving member (20), and the central shaft (22) is in rolling connection with the driving arc groove (21) through the bearing.

9. An outdoor sealed circuit breaker according to claim 7, characterized in that the breaker crank arm (10) is connected to the breaker main shaft (11), the breaker crank arm (10) is provided with a branch one (101) and a branch two (102), and the branch one (101) and the branch two (102) are respectively located on both sides of the central shaft (22).

10. The outdoor fixed-sealed circuit breaker according to claim 7, characterized in that the upper end of the frame (1) is connected with an isolating main shaft (12), the isolating main shaft (12) is connected with an isolating crank arm (13), and the other end of the isolating crank arm (13) is provided with a long hole (131); the moving contact of keeping apart end (14) passes through drive pin (132) and connects slot hole (131), it is equipped with positioner to keep apart main shaft (12), positioner includes elastic pin (25), set up in positioning disk (26) of keeping apart main shaft (12), elastic pin (25) are installed in frame (1), and elastic output end connects positioning disk (26), positioner is used for keeping apart crank arm (13) locking in the angle of keeping apart end (14) disconnection or switching on, positioning disk (26) are equipped with at least two and keep apart end (14) disconnection or switching on position assorted constant head tank (27), constant head tank (27) are used for joint elastic pin (25).