CN212303460U

CN212303460U - Circuit breaker shell

Info

Publication number: CN212303460U
Application number: CN202021488896.XU
Authority: CN
Inventors: 张永华; 林哲栋; 叶万里; 邓红; 叶才龙
Original assignee: Zhejiang Yufan Electric Co ltd
Current assignee: Zhejiang Yufan Electric Co ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-01-05
Anticipated expiration: 2030-07-25

Abstract

The utility model provides a circuit breaker casing belongs to circuit breaker technical field. The circuit breaker shell solves the problems that an existing circuit breaker shell is inconvenient to assemble and use and cannot be accurately connected in an assembling position. The circuit breaker shell comprises a first shell and a second shell, wherein a first supporting seat which is distributed in a left-right corresponding mode is fixedly connected to the axial middle position of the outer wall of the first shell, a second supporting seat which is distributed in a left-right corresponding mode is fixedly connected to the axial middle position of the outer wall of the second shell, the outer diameter of the first shell is matched with the inner diameter of the second shell, the inner end of the second shell is penetrated through in an axial sliding mode, and a fixed connection structure which enables the first shell and the second shell to be assembled in an axial relative sliding mode is arranged between the first shell and the second shell. The utility model has the advantages of reasonable design, simple, structural stability is high, does not have axial assembly to interfere, convenient assembling, and the mounted position can accurately be connected, convenient to use.

Description

Circuit breaker shell

Technical Field

The utility model belongs to the technical field of the circuit breaker, a circuit breaker casing is related to.

Background

In power transmission and transformation engineering, a GIS refers to a gas insulated metal fully-enclosed combined electrical apparatus (GIS for short), and as the main elements such as a circuit breaker, a disconnecting switch, a grounding switch, a mutual inductor, a lightning arrester, a bus, a connecting piece and the like are all arranged in a sealed metal container (shell), the metal container is organically combined into a whole through optimized design, and SF6 insulating gas with certain pressure is filled inside the metal container, the GIS has the advantages of compact structure, small volume, light weight, small occupied area, high reliability, flexible configuration, convenient installation, high safety, strong environmental adaptability, small maintenance workload, long service life and the like, is popular with vast power users, develops very quickly, and is widely applied to modern power grids around the world in recent years.

The circuit breaker is the most important and complex electrical equipment in the GIS, the circuit breaker shell is naturally very important as a key component of the circuit breaker switch equipment, and the reasonability of the structural design directly influences the safety and reliability of the long-term operation of the circuit breaker. Therefore, it is necessary to rationally design and verify the structures of the circuit breaker and the case.

The existing breaker shell is generally of an integrated structure, and two ends of the breaker shell are provided with flange plates; in practical application, the breaker switch equipment arranged in the breaker shell needs to pass through the flange plate at the end part of the breaker shell and then be assembled, and axial interference can be caused with the flange plate when the breaker switch equipment passes through the flange plate, so that the breaker switch equipment is inconvenient to assemble and use; and the breaker switch equipment needs to be axially assembled in the breaker shell at intervals, the axial relative position of the breaker shell cannot be adjusted, and the assembly positions are not accurately connected.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, convenient assembly, the assembly does not exist and interferes, the circuit breaker casing that the mounted position can accurately be connected.

The purpose of the utility model can be realized by the following technical proposal: a breaker shell comprises a first shell and a second shell, wherein the first shell and the second shell are both cylindrical, the outer ends of the first shell and the second shell are fixedly connected with flange plates, the axial middle position of the outer wall of the first shell is fixedly connected with a first supporting seat which is correspondingly distributed on the left and the right, the axial middle position of the outer wall of the second shell is fixedly connected with a second supporting seat which is correspondingly distributed on the left and the right, the breaker shell is characterized in that the outer diameter of the first shell is matched with the inner diameter of the second shell, the inner end of the first shell is axially slidably arranged at the inner end of the second shell, a fixed connecting structure which enables the first shell and the second shell to be axially and relatively slidably assembled is arranged between the first shell and the second shell, when the first shell and the second shell are relatively axially assembled and fixedly connected through the fixed connecting structure, the first supporting seat on the left side of the first shell and the second supporting seat on the second shell are in the same axial direction, the right supporting seat I on the first shell and the right supporting seat II on the second shell are positioned in the same axial direction.

The first shell and the second shell of the breaker shell are manufactured in a split mode, the breaker switch equipment can be installed from the inner ends of the first shell and the second shell, axial assembly interference cannot be generated on flange plates at the outer ends of the first shell and the second shell, and axial assembly is convenient; the first shell and the second shell are axially movably assembled and fixedly connected, the axial relative position of the first shell and the second shell is adjustable, and the assembling positions inside the first shell and the second shell can be accurately assembled and connected, so that the use is convenient.

In the case of the circuit breaker, the fixed connection structure comprises two connection screw rods which are axially distributed in parallel at intervals, the two connection screw rods are symmetrically distributed on two sides of a first case and a second case, one end of one connection screw rod penetrates through a first left supporting seat of the first case, the other end of the connection screw rod penetrates through a second left supporting seat of the second case, two nuts I are spirally connected to the connection screw rods at the front and rear positions of the first left supporting seat of the first case and the second left supporting seat of the second case, and the first left supporting seat of the first case, the second left supporting seat of the second case and the connection screw rod are axially fixed through the two nuts; one end of the other connecting screw rod penetrates through the first supporting seat on the right side of the first shell, the other end of the other connecting screw rod penetrates through the second supporting seat on the right side of the second shell, two nuts II are spirally connected to the connecting screw rods at the front and rear positions of the first supporting seat on the right side of the first shell and the second supporting seat on the right side of the second shell, and the first supporting seat on the right side of the first shell, the second supporting seat on the right side of the second shell and the connecting screw rod are axially fixed through the two nuts II. The purpose of setting up like this is that make things convenient for casing one, casing two axial relatively assembly connection fixed, and axial relatively connection structure stability is high, long service life.

In foretell circuit breaker housing, the outer wall of casing one on link firmly spacing ring one through the welded mode, the inner wall of casing two on link firmly spacing ring two through the welded mode, when casing one, casing two axial when contracting relatively, this casing one the inner terminal surface and spacing ring two axial support lean on, this casing two the inner terminal surface and spacing ring one axial support lean on. The purpose of this is: the final position of the first shell and the second shell which are relatively condensed in the axial direction is limited by the first limiting ring and the second limiting ring, so that the relative interference when the first shell and the second shell are relatively condensed in the axial direction is avoided, and the structure is stable.

In the case of the breaker, the abutting end surface of the first limiting ring is fixedly connected with the first rubber layer in a vulcanization mode, the abutting end surface of the second limiting ring is fixedly connected with the second rubber layer in a vulcanization mode, and when the inner end surface of the first case and the second limiting ring axially abut against each other, the inner end surface of the first case and the second rubber layer of the second limiting ring abut against and are matched with each other; when the inner end surface of the second shell body is axially abutted against the first limiting ring, the inner end surface of the second shell body is abutted against and matched with the first rubber layer of the first limiting ring. The purpose of this is: when the first shell and the second limit ring are axially abutted, the first shell and the second limit ring have the function of abutting and buffering, and when the second shell and the first limit ring are axially abutted, the second shell and the first limit ring have the function of abutting and buffering.

In foretell circuit breaker casing, supporting seat one, two all include outer riser and with the parallel interval distribution's of outer riser interior riser, the middle part position of outer riser, interior riser all have the through hole that supplies the connecting screw rod axial to pass, outer riser, the lower extreme welding between them of interior riser link firmly the bottom plate, outer riser of supporting seat one, the upper end between them of interior riser weld respectively and link firmly on the outer wall of casing one, outer riser of supporting seat two, upper end between them of interior riser weld respectively and link firmly on the outer wall of casing two. The purpose of this is: the first supporting seat and the second supporting seat are high in mechanical strength and long in service life.

In the circuit breaker shell, a first semicircular bottom cover is fixedly welded on the outer wall of the first shell, the first semicircular bottom cover is tightly attached to the outer wall of the lower part of the first shell, and the upper ends of an outer vertical plate and an inner vertical plate of the first supporting seat are fixedly welded on the outer wall of the first semicircular bottom cover respectively; and the upper ends of an outer vertical plate and an inner vertical plate of the second supporting seat are respectively welded and fixedly connected on the outer wall of the second semicircular bottom cover. Therefore, the first semi-circular bottom cover and the second semi-circular bottom cover are arranged to avoid damage to the connection of the first shell and the second shell, and the structure is high in stability and long in service life.

In foretell a circuit breaker housing, the outer end of casing one have linked firmly ring flange one through the welded mode, the outer wall of casing one on link firmly a section of thick bamboo one, the outer end of casing two have linked firmly ring flange two through the welded mode, the outer wall of casing two on link firmly a section of thick bamboo two. The purpose of setting up like this is convenient casing one, the connection of casing two, makes things convenient for the threading of casing one, casing two to carry out the electrically conductive connection.

Compared with the prior art, the circuit breaker shell has the advantages that: structural design is reasonable, simple, and structural stability is high, does not have axial assembly to interfere, convenient assembling, but the accurate connection of assembly position, convenient to use.

Drawings

Fig. 1 is a left side sectional structural schematic view of the circuit breaker housing.

Fig. 2 is a schematic diagram of a right-side sectional structure of the circuit breaker housing.

Fig. 3 is a schematic sectional view in the direction of a-a in fig. 1.

Fig. 4 is a schematic sectional view in the direction B-B in fig. 1.

In the figure, 1, a first shell; 2. a second shell; 3. a first supporting seat; 4. a second supporting seat; 5. connecting a screw rod; 6. a first nut; 7. a second nut; 8. a first limiting ring; 9. a second limiting ring; 10. a first rubber layer; 11. a second rubber layer; 12. an outer vertical plate; 13. an inner vertical plate; 14. a through hole; 15. a base plate; 16. a first semicircular bottom cover; 17. a semicircular bottom cover II; 18. a first flange plate; 19. a first support cylinder; 20. a second flange plate; 21. and a second support cylinder.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the circuit breaker housing mainly comprises a first housing 1 and a second housing 2, the first housing 1 and the second housing 2 are manufactured independently, the first housing 1 and the second housing 2 are both cylindrical, the outer end of the first housing 1 is fixedly connected with a first flange 18 in a welding manner, the outer wall of the first housing 1 is fixedly connected with a first support cylinder 19, the outer end of the second housing 2 is fixedly connected with a second flange 20 in a welding manner, and the outer wall of the second housing 2 is fixedly connected with a second support cylinder 21; in actual manufacturing, the axial middle position of the outer wall of the first shell 1 is fixedly connected with a first supporting seat 3 which is correspondingly distributed on the left and the right, the axial middle position of the outer wall of the second shell 2 is fixedly connected with a second supporting seat 4 which is correspondingly distributed on the left and the right, the outer diameter of the first shell 1 is matched with the inner diameter of the second shell 2, the inner end of the first shell 1 axially slides and penetrates through the inner end of the second shell 2, a fixed connecting structure which enables the first shell 1 and the second shell 2 to be axially and relatively assembled in a sliding way is arranged between the first shell 1 and the second shell 2, when the first shell 1 and the second shell 2 are axially and relatively assembled and fixedly connected through the fixed connecting structure, the left supporting seat I3 on the shell I1 and the left supporting seat II 4 on the shell II 2 are in the same axial direction, the right supporting seat I3 on the shell I1 and the right supporting seat II 4 on the shell II 2 are in the same axial direction.

In actual manufacturing, the fixed connection structure is implemented in a specific mode as follows: the connecting screw rod device mainly comprises two connecting screw rods 5 which are axially parallel and are distributed at intervals, the two connecting screw rods 5 are symmetrically distributed on two sides of a shell I1 and a shell II 2, one end of one connecting screw rod 5 penetrates through a left supporting seat I3 of the shell I1, the other end of the connecting screw rod 5 penetrates through a left supporting seat II 4 of the shell II 2, two nuts I6 are spirally connected on the connecting screw rods 5 at the front and rear positions of the left supporting seat I3 of the shell I1 and the left supporting seat II 4 of the shell II 2, and the left supporting seat I3 of the shell I1, the left supporting seat II 4 of the shell II 2 and the connecting screw rod 5 are axially fixed through the two nuts I6; one end of the other connecting screw rod 5 penetrates through the first right supporting seat 3 of the first shell 1, the other end of the other connecting screw rod penetrates through the second right supporting seat 4 of the second shell 2, two nuts 7 are spirally connected to the connecting screw rods 5 at the front and rear positions of the first right supporting seat 3 of the first shell 1 and the second right supporting seat 4 of the second shell 2, and the first right supporting seat 3 of the first shell 1, the second right supporting seat 4 of the second shell 2 and the connecting screw rod 5 are axially fixed through the two nuts 7. When in actual design, a first limiting ring 8 is fixedly connected to the outer wall of the first shell 1 in a welding mode, a second limiting ring 9 is fixedly connected to the inner wall of the second shell 2 in a welding mode, a first rubber layer 10 is fixedly connected to the abutting end face of the first limiting ring 8 in a vulcanization mode, a second rubber layer 11 is fixedly connected to the abutting end face of the second limiting ring 9 in a vulcanization mode, and when the inner end face of the first shell 1 and the second limiting ring 9 are axially abutted, the inner end face of the first shell 1 and the second rubber layer 11 of the second limiting ring 9 are abutted and matched; when the inner end surface of the second shell 2 is axially abutted against the first limit ring 8, the inner end surface of the second shell 2 is abutted against and matched with the first rubber layer 10 of the first limit ring 8.

During actual manufacturing, the first supporting seat 3 and the second supporting seat 4 are both mainly composed of an outer vertical plate 12 and inner vertical plates 13 which are parallel to the outer vertical plate 12 and distributed at intervals, through holes 14 for the connecting screw rods 5 to axially penetrate through are formed in the middle positions of the outer vertical plate 12 and the inner vertical plates 13, bottom plates 15 are fixedly connected to the lower ends of the outer vertical plate 12 and the inner vertical plates 13 in a welded mode, the upper ends of the outer vertical plate 12 and the inner vertical plates 13 of the first supporting seat 3 are fixedly connected to the outer wall of the first shell 1 in a welded mode respectively, and the upper ends of the outer vertical plate 12 and the inner vertical plates 13 of the second supporting seat 4 are fixedly connected to the outer wall of; specifically, a semicircular bottom cover I16 is fixedly welded on the outer wall of the shell I1, the semicircular bottom cover I16 is tightly attached to the outer wall of the lower part of the shell I1, and the upper ends of an outer vertical plate 12 and an inner vertical plate 13 of a supporting seat I3 are fixedly welded on the outer wall of the semicircular bottom cover I16 respectively; the outer wall of the second shell 2 is fixedly connected with a second semicircular bottom cover 17 in a welding mode, the second semicircular bottom cover 17 is tightly attached to the outer wall of the lower portion of the second shell 2, and the upper ends of an outer vertical plate 12 and an inner vertical plate 13 of the second supporting seat 4 are fixedly connected to the outer wall of the second semicircular bottom cover 17 in a welding mode respectively.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A circuit breaker shell comprises a first shell (1) and a second shell (2), wherein the first shell (1) and the second shell (2) are cylindrical, the outer ends of the first shell (1) and the second shell (2) are fixedly connected with flange plates, the axial middle position of the outer wall of the first shell (1) is fixedly connected with a first supporting seat (3) which is distributed in a left-right corresponding mode, the axial middle position of the outer wall of the second shell (2) is fixedly connected with a second supporting seat (4) which is distributed in a left-right corresponding mode, the circuit breaker shell is characterized in that the outer diameter of the first shell (1) is matched with the inner diameter of the second shell (2), the inner end of the first shell (1) is axially slid to penetrate through the inner end of the second shell (2), and a fixed connection structure which enables the first shell (1) and the second shell (2) to be assembled in an axial relative sliding mode is arranged between the first shell (1) and the second shell (2), when the first shell (1) and the second shell (2) are axially and relatively assembled and fixedly connected through the fixed connection structure, the first support seat (3) on the left side of the first shell (1) and the second support seat (4) on the left side of the second shell (2) are located in the same axial direction, and the first support seat (3) on the right side of the first shell (1) and the second support seat (4) on the right side of the second shell (2) are located in the same axial direction.

2. A circuit breaker housing according to claim 1, wherein the fixed connection structure comprises two connection screws (5) axially spaced in parallel, the two connecting screw rods (5) are symmetrically distributed on two sides of the first shell (1) and the second shell (2), one end of one connecting screw rod (5) penetrates through a first supporting seat (3) on the left of a first shell (1), the other end of the connecting screw rod penetrates through a second supporting seat (4) on the left of a second shell (2), two nuts (6) are spirally connected on the connecting screw rods (5) at the front and rear positions of the first supporting seat (3) on the left of the first shell (1) and the second supporting seat (4) on the left of the second shell (2), the supporting seat I (3) on the left side of the shell I (1), the supporting seat II (4) on the left side of the shell II (2) and the connecting screw rod (5) are axially fixed through two nuts I (6); one end of the other connecting screw rod (5) penetrates through the right supporting seat I (3) of the first shell (1), the other end of the other connecting screw rod penetrates through the right supporting seat II (4) of the second shell (2), the right supporting seat I (3) of the first shell (1), the right supporting seat II (4) of the second shell (2) and the connecting screw rod (5) at the front and rear positions are respectively and spirally connected with two nuts II (7), and the right supporting seat I (3) of the first shell (1), the right supporting seat II (4) of the second shell (2) and the connecting screw rod (5) are axially fixed through the two nuts II (7).

3. The circuit breaker casing according to claim 2, wherein the outer wall of the first casing (1) is fixedly connected with a first limit ring (8) by welding, the inner wall of the second casing (2) is fixedly connected with a second limit ring (9) by welding, when the first casing (1) and the second casing (2) are axially and relatively contracted, the inner end face of the first casing (1) is axially abutted against the second limit ring (9), and the inner end face of the second casing (2) is axially abutted against the first limit ring (8).

4. The circuit breaker shell according to claim 3, wherein the abutting end surface of the first limit ring (8) is fixedly connected with a first rubber layer (10) in a vulcanization mode, the abutting end surface of the second limit ring (9) is fixedly connected with a second rubber layer (11) in a vulcanization mode, and when the inner end surface of the first shell (1) and the second limit ring (9) axially abut against each other, the inner end surface of the first shell (1) and the second rubber layer (11) of the second limit ring (9) are abutted against each other; when the inner end surface of the second shell (2) is axially abutted against the first limiting ring (8), the inner end surface of the second shell (2) is abutted against and matched with the first rubber layer (10) of the first limiting ring (8).

5. The circuit breaker casing of claim 4, wherein the first supporting seat (3) and the second supporting seat (4) each include an outer vertical plate (12) and an inner vertical plate (13) spaced from and parallel to the outer vertical plate (12), the middle positions of the outer vertical plate (12) and the inner vertical plate (13) each have a through hole (14) for the connecting screw rod (5) to axially pass through, the lower ends of the outer vertical plate (12) and the inner vertical plate (13) are welded and fixedly connected to the bottom plate (15), the upper ends of the outer vertical plate (12) and the inner vertical plate (13) of the first supporting seat (3) are welded and fixedly connected to the outer wall of the first casing (1), and the upper ends of the outer vertical plate (12) and the inner vertical plate (13) of the second supporting seat (4) are welded and fixedly connected to the outer wall of the second casing (2) respectively.

6. The circuit breaker shell according to claim 5, wherein a semicircular bottom cover I (16) is fixedly welded to the outer wall of the shell I (1), the semicircular bottom cover I (16) is tightly attached to the outer wall of the lower portion of the shell I (1), and the upper ends of the outer vertical plate (12) and the inner vertical plate (13) of the support seat I (3) are fixedly welded to the outer wall of the semicircular bottom cover I (16) respectively; the outer wall of the second shell (2) is fixedly connected with a second semicircular bottom cover (17) in a welding mode, the second semicircular bottom cover (17) is tightly attached to the outer wall of the lower portion of the second shell (2), and the upper ends of an outer vertical plate (12) and an inner vertical plate (13) of the second supporting seat (4) are fixedly connected to the outer wall of the second semicircular bottom cover (17) in a welding mode respectively.

7. The circuit breaker casing according to claim 6, wherein the outer end of the first casing (1) is fixedly connected with a first flange (18) by welding, the outer wall of the first casing (1) is fixedly connected with a first support cylinder (19), the outer end of the second casing (2) is fixedly connected with a second flange (20) by welding, and the outer wall of the second casing (2) is fixedly connected with a second support cylinder (21).