CN213906094U - Circuit breaker and isolator's combined mechanism - Google Patents

Abstract

The application discloses a combined mechanism of a circuit breaker and a disconnecting switch, which comprises a rack, and the circuit breaker and the disconnecting switch which are fixedly arranged on the rack, wherein the rack comprises a fixed vertical plate, a first transverse plate, a second transverse plate and a third transverse plate; the circuit breaker comprises a first main shaft, a first crank arm, a first connecting rod, a linkage assembly, an upper mounting seat, a vacuum arc extinguish chamber, a lower mounting seat and a static contact; the isolating switch comprises a second main shaft, a second crank arm, a second connecting rod, an isolating knife board and a contact base; go up the mount pad and include first base, first back seat and first front bezel, the mount pad includes second base, second back seat and second front bezel down. The device has the advantages of compact structure, convenient installation, reliable performance, integration and modular design.

Description

Circuit breaker and isolator's combined mechanism

Technical Field

The application relates to the field of electrical equipment, in particular to a high-voltage switch cabinet.

Background

Offshore wind power is offshore wind power generation, and is a novel power plant for generating power by utilizing offshore wind resources, under the background that offshore wind power in the world begins to enter a large-scale development stage, the sequence curtain is also opened in the construction of offshore wind power plants in China, in the aspect of offshore wind power, the development of wind energy resources on the sea in the east coast of China can reach about 7.5 hundred million kilowatts, so that the offshore wind power generation system has huge resource potential and good development and utilization market conditions. In the field of offshore wind power, a high-voltage switch cabinet is also a crucial ring and is used for switching on and off, controlling and protecting power generation, power transmission, power distribution, electric energy conversion and consumption in an offshore wind power system. Because the environment of the offshore wind power field is severe, the high-voltage switch cabinet adopts an inflatable cabinet structure. The gas-filled cabinet is short for indoor AC high-voltage gas insulated metal-enclosed switchgear, and is a new generation of switchgear, the main switch can be a permanent magnet mechanism vacuum circuit breaker or a spring mechanism vacuum circuit breaker, and the primary electrified loop is sealed in a sulfur hexafluoride gas compartment, so that the gas-filled cabinet is compact and expandable, and is suitable for distribution automation. The inflatable cabinet has the characteristics of compact structure, flexible operation, safety, reliability and the like, and can provide satisfactory technical schemes for various application occasions (particularly places with severe environment) and different user requirements.

At present, an inflatable cabinet generally comprises an air chamber, an operation chamber, a cable chamber and an instrument chamber, sulfur hexafluoride gas is generally filled in the air chamber to serve as insulating gas, a circuit breaker and a disconnecting switch are installed in the air chamber, and a circuit breaker operation mechanism and a disconnecting switch operation mechanism are installed in the operation chamber. The isolating switch and the circuit breaker are used as core components of the gas-filled cabinet, and play an important role in controlling, protecting, isolating and grounding functions of the switch cabinet. However, the structures of the circuit breakers and the isolating switches on the market at present are relatively complex, parts are complex, balance design cannot be made between the volume and the electrical performance, and the defects of poor accuracy of switch action, poor reliability, high maintenance cost and the like exist.

Therefore, how to further improve the circuit breaker and the disconnecting switch in the existing gas-filled cabinet so as to overcome the above problems is a problem to be solved by those skilled in the art.

Disclosure of Invention

An object of this application is to provide a compact structure, simple to operate, dependable performance, and integrated, modular design's circuit breaker and isolator's combined mechanism.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: the utility model provides a circuit breaker and isolator's combined mechanism, includes the frame, and fixed set up in circuit breaker and isolator in the frame, its characterized in that:

the frame comprises two fixed vertical plates, a first transverse plate, a second transverse plate and a third transverse plate, the two fixed vertical plates are arranged along the left-right direction, the first transverse plate, the second transverse plate and the third transverse plate are sequentially and fixedly arranged on the fixed vertical plates on the left side and the right side from top to bottom, and the fixed vertical plates are suitable for being fixedly arranged in the air box;

the circuit breaker comprises a first main shaft, a first crank arm, a first connecting rod, a linkage assembly, an upper mounting seat, a vacuum arc extinguish chamber, a lower mounting seat and a static contact; the upper end of the fixed vertical plate extends forwards to form a first mounting lug, the first main shaft is rotatably arranged on the first mounting lugs at two sides, one end of the first crank arm is fixedly arranged on the first main shaft, the other end of the first crank arm is rotatably connected with one end of the first connecting rod, a first insulator is fixedly arranged on the first transverse plate, a second insulator is fixedly arranged on the second transverse plate, the upper mounting seat is fixedly arranged on the first insulator, the lower mounting seat is fixedly arranged on the second insulator, the vacuum arc-extinguishing chamber is fixedly arranged between the upper mounting seat and the lower mounting seat along the vertical direction, the linkage component is arranged on the upper mounting seat, the other end of the first connecting rod is rotationally connected with the linkage component, the fixed contact is fixedly arranged on the lower mounting seat and is electrically connected with the vacuum arc-extinguishing chamber; the first main shaft rotates and is suitable for driving the vacuum arc extinguish chamber to be separated and combined through the matching of the first crank arm, the first connecting rod and the linkage assembly;

the isolating switch comprises a second main shaft, a second crank arm, a second connecting rod, an isolating knife board and a contact base, wherein a second mounting lug extends forwards from the lower end of the fixed vertical plate, the second main shaft is rotatably arranged on the first mounting lugs on two sides, one end of the second crank arm is fixedly arranged on the second main shaft, the other end of the second crank arm is rotatably connected with one end of the second connecting rod, the other end of the second connecting rod is rotatably connected with the middle section of the isolating knife board, a third insulator is fixedly arranged on the third transverse plate, the contact base is fixedly arranged on the third insulator, and one end of the isolating knife board is rotatably connected with the contact base; the second main shaft rotates and is suitable for driving the isolation knife board to rotate through the matching of the second crank arm and the second connecting rod, and the other end of the isolation knife board is in contact with or far away from the static contact to realize switching on and off;

the upper mounting seat comprises a first base, a first rear seat and a first front seat, the lower mounting seat comprises a second base, a second rear seat and a second front seat, and the vacuum arc-extinguishing chamber is fixedly arranged between the first base and the second base; the rear ends of the first rear seat and the second rear seat are flush, and a rear reinforcing plate is connected between the first rear seat and the second rear seat through a fastener; the rear reinforcing plates are fixedly arranged between the first rear seat and the first insulator and between the second rear seat and the second insulator; the front ends of the first front seat and the second front seat are flush, and a front reinforcing plate is connected between the first front seat and the second front seat through a fastener; the linkage assembly is arranged on two sides of the first base through fasteners; the rear end of the second base is provided with a connecting opening, and the static contact is suitable for penetrating through the connecting opening and electrically connected with the vacuum arc-extinguishing chamber.

As an improvement, the contact base comprises a transverse seat and a vertical rod, the transverse seat extends along the left-right direction and is suitable for being fixedly connected with the third insulator through a fastener, the vertical rod extends along the up-down direction and is fixedly arranged at the middle section of the transverse seat, and the transverse seat and the vertical rod are arranged in a cross shape; the vertical rod comprises a hinged section and a fixed section which are distributed up and down, the hinged section is suitable for being rotatably connected with the isolation knife board, and the fixed section is suitable for being fixedly connected with the copper bar. The contact base of the scheme guarantees the multi-purpose function of the contact base while achieving the small and exquisite compactness of the structure, and can respectively realize the fixed connection insulator, rotate to connect the isolation cutting board and the fixed connection copper bar.

Preferably, the contact base is integrally cast and molded by a conductive metal material. Has the advantages of convenient molding and low cost,

as an improvement, the lower end of the second base is provided with a abdication inclined plane which is connected with the second front seat and inclines from front to back from top to bottom; the upper end of the isolation knife board is suitable for rotating to pass along the abdicating inclined plane. The isolation knife board is prevented from interfering with the lower mounting seat, so that the space is saved, and the structure is more compact.

Preferably, a triangular plate is arranged between the second connecting rod and the isolation cutting board, two ends of the triangular plate are fixedly arranged on the isolation cutting board, and the second connecting rod is rotatably connected with the other end of the triangular plate. The set square has the advantages of reliable connection and convenient installation.

Preferably, a first bearing seat is fixedly arranged on the first mounting lug, the first main shaft penetrates through the first bearing seat and is rotatably arranged in the first bearing seat through a bearing, and the first bearing seat is suitable for being connected with the air box in a sealing manner;

and a second bearing seat is fixedly arranged on the second mounting lug, the second main shaft penetrates through the second bearing seat and is rotatably arranged in the second bearing seat through a bearing, and the second bearing seat is suitable for being connected with the air box in a sealing manner.

Compared with the prior art, the beneficial effect of this application lies in: firstly, the rack, the circuit breaker and the isolating switch are integrally and modularly arranged, so that assembly and later maintenance are facilitated; specifically, during assembly, the combined mechanism can be assembled firstly and then integrally installed in the air box, so that the inconvenience of assembly in the air box is avoided; during later maintenance, the combined mechanism can be maintained independently, and even can be integrally replaced. Secondly, the frame relies on the frame construction of fixed riser, first diaphragm, second diaphragm and third diaphragm combination, has simple structure compactness, and the equipment is convenient, and the advantage that intensity is reliable all can pass through the section bar procedure moreover, has that the process is simple, advantage with low costs. Moreover, the upper mounting seat and the lower mounting seat are structurally arranged, so that a front reinforcing plate and a rear reinforcing plate can be arranged, the structure of the circuit breaker is more stable and reliable, and the service life is ensured; and the opening of the connecting opening can enable the static contact to be hidden in the lower mounting seat, so that on one hand, the whole structure is more compact, the arrangement space is saved, on the other hand, the insulating capability between phases can be further improved, and the electrical reliability of the circuit breaker is ensured.

Drawings

FIG. 1 is a schematic perspective view of a preferred embodiment according to the present application;

FIG. 2 is a front view of a preferred embodiment according to the present application;

FIG. 3 is a side view of a preferred embodiment according to the present application;

FIG. 4 is a perspective view of an upper mount according to a preferred embodiment of the present application;

FIG. 5 is a perspective view of a lower mount according to a preferred embodiment of the present application;

FIG. 6 is a side view of a lower mount according to a preferred embodiment of the present application;

FIG. 7 is a perspective view of a contact base according to a preferred embodiment of the present application;

figure 8 is a schematic perspective view of a gas box according to a preferred embodiment of the present application.

In the figure: 100. a gas tank; 101. copper bars; 1. a frame; 2. a circuit breaker; 3. an isolating switch; 4. a first insulator; 5. a second insulator; 6. a third insulator;

11. fixing a vertical plate; 12. a first transverse plate; 13. a second transverse plate; 14. a third transverse plate; 111. a first mounting ear; 112. a second mounting ear; 113. a first bearing housing; 114. a second bearing housing;

21. a first main shaft; 22. a first crank arm; 23. a first link; 24. a linkage assembly; 25. an upper mounting seat; 26. a vacuum arc-extinguishing chamber; 27. a lower mounting seat; 28. static contact; 29. a rear reinforcing plate; 210. a front reinforcing plate; 251. a first base; 252. a first rear seat; 253. a first front seat; 271. a second base; 272. a second rear seat; 273. a second front seat; 274. a connection opening; 275. a abdication inclined plane;

351. a transverse seat; 352. a vertical rod; 3521. a hinged section; 3522. and a fixed segment.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1 to 8, a preferred embodiment of the present application includes a rack 1, and a circuit breaker 2 and a disconnector 3 fixedly disposed on the rack 1. It is worth mentioning that the circuit breaker 2 and the disconnecting switch 3 are both of a three-phase structure, and the following descriptions of the circuit breaker 2 and the disconnecting switch 3 are all based on the three phases, so that the three phases are not described separately. The concrete structure is as follows:

the frame 1 includes fixed riser 11, first diaphragm 12, second diaphragm 13 and third diaphragm 14, and fixed riser 11 has two that arrange along the left and right directions, and first diaphragm 12, second diaphragm 13 and third diaphragm 14 are from last to down fixed setting in proper order on the fixed riser 11 of the left and right sides, and fixed riser 11 is suitable for fixed setting in gas tank 100.

The circuit breaker 2 comprises a first main shaft 21, a first crank arm 22, a first connecting rod 23, a linkage assembly 24, an upper mounting seat 25, a vacuum arc-extinguishing chamber 26, a lower mounting seat 27 and a static contact 28; the upper end of the fixed vertical plate 11 extends forwards to form a first mounting lug 111, the first main shaft 21 is rotatably arranged on the first mounting lugs 111 at two sides, one end of a first connecting lever 22 is fixedly arranged on the first main shaft 21, the other end of the first connecting lever 22 is rotatably connected with one end of a first connecting rod 23, a first insulator 4 is fixedly arranged on the first transverse plate 12, a second insulator 5 is fixedly arranged on the second transverse plate 13, an upper mounting seat 25 is fixedly arranged on the first insulator 4, a lower mounting seat 27 is fixedly arranged on the second insulator 5, a vacuum arc extinguish chamber 26 is fixedly arranged between the upper mounting seat 25 and the lower mounting seat 27 along the up-down direction, a linkage component 24 is arranged on the upper mounting seat 25, the other end of the first connecting rod 23 is rotatably connected with the linkage component 24, and a static contact 28 is fixedly arranged on the lower mounting seat 27 and is electrically connected with the vacuum arc extinguish chamber 26; the first main shaft 21 rotates and is suitable for driving the vacuum arc extinguish chamber 26 to be separated and combined through the cooperation of the first crank arm 22, the first connecting rod 23 and the linkage assembly 24. It should be noted that the specific structure and operation of the linkage assembly 24 and the vacuum interrupter 26 are prior art and therefore not specifically described in this embodiment, but this does not prevent the specific structure and operation from becoming the technical features implicit in this application.

The isolating switch 3 comprises a second main shaft 31, a second crank arm 32, a second connecting rod 33, an isolating knife plate 34 and a contact base 35, wherein the lower end of the fixed vertical plate 11 extends forwards to form a second mounting lug 112, the second main shaft 31 is rotatably arranged on the first mounting lugs 112 at two sides, one end of the second crank arm 32 is fixedly arranged on the second main shaft 31, the other end of the second crank arm 32 is rotatably connected with one end of the second connecting rod 33, the other end of the second connecting rod 33 is rotatably connected with the middle section of the isolating knife plate 34, a third insulator 6 is fixedly arranged on the third transverse plate 14, the contact base 35 is fixedly arranged on the third insulator 6, and one end of the isolating knife plate 34 is rotatably connected with the contact base 35; the second spindle 31 rotates, and is suitable for driving the isolation knife board 34 to rotate through the matching of the second crank arm 32 and the second connecting rod 33, and the other end of the isolation knife board 34 is made to contact with or be away from the static contact 28, so that switching-on and switching-off are realized. Of course, the isolating switch 3 may also be a three-position structure, in which the isolating knife plate 34 rotates and can also reach the grounding position. A triangular plate 36 is arranged between the second connecting rod 33 and the isolation knife plate 34, two ends of the triangular plate 36 are fixedly arranged on the isolation knife plate 34, and the second connecting rod 33 is rotatably connected with the other end of the triangular plate 36.

The upper mounting seat 25 includes a first base 251, a first rear seat 252 and a first front seat 253, the lower mounting seat 27 includes a second base 271, a second rear seat 272 and a second front seat 273, and the vacuum interrupter 26 is fixedly disposed between the first base 251 and the second base 271; the rear ends of the first rear seat 252 and the second rear seat 272 are flush, and a rear reinforcing plate 29 is connected between the first rear seat 252 and the second rear seat 272 through a fastener; and the rear reinforcing plate 29 is fixedly disposed between the first rear seat 252 and the first insulator 4, and between the second rear seat 272 and the second insulator 5; the front ends of the first front seat 253 and the second front seat 273 are flush, and a front reinforcing plate 210 is connected between the first front seat 253 and the second front seat 273 through a fastener; the linkage assembly 24 is arranged on two sides of the first base 251 through fasteners; the second base 271 has a connection opening 274 at the rear end thereof, and the stationary contact 28 is adapted to pass through the connection opening 274 and electrically connected to the vacuum interrupter 26. The lower end of the second base 271 is provided with a abdicating inclined plane 275, the abdicating inclined plane 275 is connected with the second front seat 273 and inclines from front to back from top to bottom; the upper end of the isolating blade 34 is adapted to rotate past along the abdicating ramp 275.

The contact base 35 comprises a horizontal seat 351 and a vertical rod 352, the horizontal seat 351 extends along the left-right direction and is suitable for being fixedly connected with the third insulator 6 through a fastener, the vertical rod 352 extends along the up-down direction and is fixedly arranged at the middle section of the horizontal seat 351, and the horizontal seat 351 and the vertical rod 352 are arranged in a crisscross manner; the vertical rod 352 comprises a hinged section 3521 and a fixed section 3522 which are distributed up and down, the hinged section 3521 is suitable for being connected with the isolation knife board 34 in a rotating mode, and the fixed section 3522 is suitable for being connected with the copper bar 101 in a fixed mode. The contact base 35 is integrally cast from a conductive metallic material, including but not limited to copper, iron, aluminum, and other conductive alloys.

For the reliability of sealing, a first bearing seat 113 is fixedly arranged on the first mounting lug 111, the first main shaft 21 passes through the first bearing seat 113 and is rotatably arranged in the first bearing seat 113 through a bearing, and the first bearing seat 113 is suitable for being hermetically connected with the gas tank 100; the second mounting lug 112 is fixedly provided with a second bearing seat 114, the second main shaft 31 passes through the second bearing seat 114 and is rotatably arranged in the second bearing seat 114 through a bearing, and the second bearing seat 114 is suitable for being hermetically connected with the air box 100.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (6)

1. The utility model provides a circuit breaker and isolator's combined mechanism, includes the frame, and fixed set up in circuit breaker and isolator in the frame, its characterized in that:

the frame comprises two fixed vertical plates, a first transverse plate, a second transverse plate and a third transverse plate, the two fixed vertical plates are arranged along the left-right direction, the first transverse plate, the second transverse plate and the third transverse plate are sequentially and fixedly arranged on the fixed vertical plates on the left side and the right side from top to bottom, and the fixed vertical plates are suitable for being fixedly arranged in the air box;

the circuit breaker comprises a first main shaft, a first crank arm, a first connecting rod, a linkage assembly, an upper mounting seat, a vacuum arc extinguish chamber, a lower mounting seat and a static contact; the upper end of the fixed vertical plate extends forwards to form a first mounting lug, the first main shaft is rotatably arranged on the first mounting lugs at two sides, one end of the first crank arm is fixedly arranged on the first main shaft, the other end of the first crank arm is rotatably connected with one end of the first connecting rod, a first insulator is fixedly arranged on the first transverse plate, a second insulator is fixedly arranged on the second transverse plate, the upper mounting seat is fixedly arranged on the first insulator, the lower mounting seat is fixedly arranged on the second insulator, the vacuum arc-extinguishing chamber is fixedly arranged between the upper mounting seat and the lower mounting seat along the vertical direction, the linkage component is arranged on the upper mounting seat, the other end of the first connecting rod is rotationally connected with the linkage component, the fixed contact is fixedly arranged on the lower mounting seat and is electrically connected with the vacuum arc-extinguishing chamber; the first main shaft rotates and is suitable for driving the vacuum arc extinguish chamber to be separated and combined through the matching of the first crank arm, the first connecting rod and the linkage assembly;

the isolating switch comprises a second main shaft, a second crank arm, a second connecting rod, an isolating knife board and a contact base, wherein a second mounting lug extends forwards from the lower end of the fixed vertical plate, the second main shaft is rotatably arranged on the first mounting lugs on two sides, one end of the second crank arm is fixedly arranged on the second main shaft, the other end of the second crank arm is rotatably connected with one end of the second connecting rod, the other end of the second connecting rod is rotatably connected with the middle section of the isolating knife board, a third insulator is fixedly arranged on the third transverse plate, the contact base is fixedly arranged on the third insulator, and one end of the isolating knife board is rotatably connected with the contact base; the second main shaft rotates and is suitable for driving the isolation knife board to rotate through the matching of the second crank arm and the second connecting rod, and the other end of the isolation knife board is in contact with or far away from the static contact to realize switching on and off;

the upper mounting seat comprises a first base, a first rear seat and a first front seat, the lower mounting seat comprises a second base, a second rear seat and a second front seat, and the vacuum arc-extinguishing chamber is fixedly arranged between the first base and the second base; the rear ends of the first rear seat and the second rear seat are flush, and a rear reinforcing plate is connected between the first rear seat and the second rear seat through a fastener; the rear reinforcing plates are fixedly arranged between the first rear seat and the first insulator and between the second rear seat and the second insulator; the front ends of the first front seat and the second front seat are flush, and a front reinforcing plate is connected between the first front seat and the second front seat through a fastener; the linkage assembly is arranged on two sides of the first base through fasteners; the rear end of the second base is provided with a connecting opening, and the static contact is suitable for penetrating through the connecting opening and electrically connected with the vacuum arc-extinguishing chamber.

2. A circuit breaker and disconnector combination according to claim 1, characterized in that: the contact base comprises a transverse seat and a vertical rod, the transverse seat extends along the left-right direction and is suitable for being fixedly connected with the third insulator through a fastener, the vertical rod extends along the up-down direction and is fixedly arranged in the middle section of the transverse seat, and the transverse seat and the vertical rod are arranged in a cross shape; the vertical rod comprises a hinged section and a fixed section which are distributed up and down, the hinged section is suitable for being rotatably connected with the isolation knife board, and the fixed section is suitable for being fixedly connected with the copper bar.

3. A circuit breaker and disconnector combination according to claim 2, characterized in that: the contact base is integrally cast and molded by conductive metal materials.

4. A circuit breaker and disconnector combination according to claim 1, characterized in that: the lower end of the second base is provided with a abdicating inclined plane which is connected with the second front seat and inclines from front to back from top to bottom; the upper end of the isolation knife board is suitable for rotating to pass along the abdicating inclined plane.

5. A circuit breaker and disconnector combination according to claim 1, characterized in that: the second connecting rod with be provided with the set-square between the isolation cutting board, set-square both ends fixed set up in on the isolation cutting board, the second connecting rod rotates and connects the other one end of set-square.

6. A circuit breaker and disconnector combination according to any of claims 1 to 5, characterized in that: the first mounting lug is fixedly provided with a first bearing seat, the first main shaft penetrates through the first bearing seat and is rotatably arranged in the first bearing seat through a bearing, and the first bearing seat is suitable for being connected with the air box in a sealing manner;

and a second bearing seat is fixedly arranged on the second mounting lug, the second main shaft penetrates through the second bearing seat and is rotatably arranged in the second bearing seat through a bearing, and the second bearing seat is suitable for being connected with the air box in a sealing manner.

Images