CN217720271U

CN217720271U - Detachable bus device

Info

Publication number: CN217720271U
Application number: CN202221471539.1U
Authority: CN
Inventors: 刘春辉; 张凤龙; 王文超; 淡炳雄; 罗晶碑
Original assignee: Siemens High Voltage Switchgear Co Ltd
Current assignee: Siemens High Voltage Switchgear Co Ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-11-01
Anticipated expiration: 2032-06-14

Abstract

The utility model provides a detachable bus device, which comprises a shell component and a cover plate, wherein the shell component and the cover plate surround to form an air chamber, two ends of the shell component are respectively provided with a first contact and a second contact, the bus device comprises a first conductor and a second conductor which are positioned in the air chamber, and the first conductor and the second conductor respectively comprise a first end and a second end; the cover plate can be disassembled; in an assembled state of the bus bar arrangement, the cover closes the gas chamber, a side of the first end of the first conductor and a side of the first end of the second conductor are connected together in abutment, a second end of the first conductor is fitted into the first contact, a second end of the second conductor is fitted into the second contact, and in a disassembled state of the bus bar arrangement, the cover opens the gas chamber, the first conductor and the second conductor being shaped to be movable towards each other to disengage the second end of the first conductor from the first contact and the second end of the second conductor from the second contact. The bus device has the detachable function and is convenient to install and adjust.

Description

Detachable bus device

Technical Field

The utility model relates to a high tension switchgear field specifically, relates to a generating line device that can dismantle.

Background

A Gas Insulated Switchgear (GIS) can cause local conductors and a housing to bear excessive internal stress and moment due to installation and module manufacturing errors, and can cause conductor deformation and housing fracture in severe cases.

In addition, if GIS interlude module need demolish the maintenance, receive the restriction of casing connected mode and the coaxial bayonet electric connection mode of inner conductor, can only follow the tip and demolish one by one to trouble section module one by one, but this scheme has following not enough: the dismantling workload is large and the time consumption is long; the removed module may be damaged or contaminated.

To sum up, the GIS device requires both a module capable of adjusting installation deviation and manufacturing error and a detachable bus device, the conventional solution sets a telescopic compensation device in some ranges, and the other ranges set detachable bus devices, which is not economical and requires a large amount of time and space for installation and detachment.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a have bus-bar fracture function concurrently, install regulatory function and maintenance and dismantle the bus-bar device of function.

According to an aspect of the present invention, there is provided a detachable bus bar device, the bus bar device including a housing assembly and a cover plate, a length direction of the bus bar device being defined between two ends of the housing assembly, the two ends of the housing assembly being respectively provided with a first contact and a second contact, the cover plate being fixed to one side of the housing assembly, the housing assembly and the cover plate surrounding to form an air chamber, in particular, the bus bar device includes a first conductor and a second conductor located in the air chamber, the first conductor includes a first end and a second end in the length direction, and the second conductor includes a first end and a second end in the length direction; and the cover plate is detachable to close or open the air chamber; in an assembled state of the bus bar arrangement, the cover closes the gas chamber, a side of the first end of the first conductor and a side of the first end of the second conductor overlap in the length direction and are connected together in abutment with each other, the second end of the first conductor fits into the first contact and the second end of the second conductor fits into the second contact, in an disassembled state of the bus bar arrangement, the cover opens the gas chamber, the first conductor and the second conductor are shaped to be movable towards each other in the length direction to disengage the second end of the first conductor from the first contact and the second end of the second conductor from the second contact.

In an exemplary embodiment, the housing assembly includes a first rigid housing and a second housing that is retractable in the longitudinal direction, the first housing having a housing opening thereon, and the cover being detachably provided on the housing opening, the second housing being in an extended state in an assembled state of the bus bar device, the first housing and the second housing being joined together; in a disassembled state of the bus bar device, the second housing can be in a contracted state and separated from the first housing.

In an exemplary embodiment, the first conductor includes: a first rod portion mated with the first contact, the first contact having a first recess adapted to receive the first rod portion; a first head portion; and a first protruding shoulder between the first stem portion and the first head portion; the second conductor includes: a second rod portion mated with the second contact, the second contact having a second recess adapted to receive the second rod portion; a second head; and a second projecting shoulder between the second stem portion and the second head portion, a side surface of the first head portion and a side surface of the second head portion being abuttingly connected together in an assembled state of the bus bar arrangement, there being a first distance between an end surface of the first head portion and an opposite end surface of the second projecting shoulder, and there being a second distance between an end surface of the second head portion and an opposite end surface of the first projecting shoulder, the first distance and the second distance being a same span distance, the first recess and the second recess having a same depth, the span distance being greater than the depth.

In an exemplary embodiment, the bus bar arrangement further comprises a shield can and a detachable fastening means, the shield can being arranged around the first head part and the first protruding shoulder part and the second head part and the second protruding shoulder part in the assembled state of the bus bar arrangement, the fastening means fastening the shield can, the first head part and the second head part together.

In an exemplary embodiment, the fastening means comprises a first screw passing through the mantle wall of the shield can, through the first head, and connecting into a threaded hole on the second head, and a second screw passing through the mantle wall of the shield can, through the second head, and connecting into a threaded hole on the first head.

In an exemplary embodiment, the bus bar arrangement further comprises a first basin insulator and a second basin insulator, the first contact being mounted on the first basin insulator and the second contact being mounted on the second basin insulator; and the second casing include the bellows that can stretch out and draw back, with adjusting screw that the both ends of bellows are connected and with adjusting screw complex nut, the one end of bellows can install with dismantling in the second basin formula insulator, the other end of bellows install in first casing, adjusting screw with the nut cooperation is in order to adjust and fix the flexible volume of bellows.

In an exemplary embodiment, the number of the adjusting screws is at least two, and the adjusting screws are symmetrically arranged around the circumference of the bellows.

In an exemplary embodiment, the first conductor has a length shorter than that of the second conductor, and the first head portion and the second head portion connected to each other are located opposite to the housing opening in an assembled state of the bus bar device.

In an exemplary embodiment, the bus bar arrangement includes a jumper disposed across both ends of the corrugated tubing.

In an exemplary embodiment, the first housing includes a body, a neck extending from the body, and a flange extending outwardly from the neck, an interior of the flange and an interior of the neck collectively forming the housing opening.

Through the utility model discloses a bus bar device that can dismantle can realize the following beneficial technological effect of several aspects at least.

First, adopt the utility model discloses a bus bar device that can dismantle can realize breaking away from, handling, the recovery operation of trouble module fast, reduces the fault handling time, reduces the loss.

Second, adopt the utility model discloses a bus bar device that can dismantle can effective adjusting module installation deviation and manufacturing error.

Third, adopt the utility model discloses a bus bar device that can dismantle, when installation extension engineering, the engineering does not have a power failure in earlier stage, treats new extension engineering installation test completion back, reuses this bus bar device that can dismantle and engineering butt joint in earlier stage, shortens the power off time, reduces the loss.

Drawings

The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:

fig. 1 is a schematic cross-sectional view of a detachable busbar arrangement according to an exemplary embodiment of the present invention, with arrows illustrating schematically how the function of a busbar break is achieved.

Fig. 2 is a schematic cross-sectional view of a detachable bus bar assembly according to an exemplary embodiment of the present invention, in which a disassembly service function of the bus bar assembly is shown.

Fig. 3 is a schematic cross-sectional view of a detachable bus bar assembly according to an exemplary embodiment of the present invention, in which arrows show how the installation deviation adjustment function of the bus bar assembly is implemented.

Wherein the reference numbers are as follows:

1. first shell

2. First conductor

3. Shielding case

4. Cover plate

5. Second conductor

6. Corrugated pipe

7. Adjusting screw

8. Cross-connecting row

9. Nut

10. First contact

11. First basin-type insulator

12. Second contact

13. Opening of the shell

14. The first concave part

15. Second rod part

16. Second head

17. Second protruding shoulder

18. Fastening device

19. Second basin type insulator

20. Air chamber

21. Body

22. Neck part

23. Flange

140. Second concave part

215. First rod part

216. First head

217. First protruding shoulder

A. Span length

B. Depth of field

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail by referring to the following embodiments. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise.

Fig. 1 is a schematic cross-sectional view of a detachable busbar arrangement according to an exemplary embodiment of the present invention, with arrows illustrating schematically how the function of busbar breaks is achieved. The utility model discloses a bus bar device that can dismantle includes housing assembly and apron 4, prescribes a limit to the length direction of bus bar device between housing assembly's the both ends, and housing assembly's both ends set up first contact 10 and second contact 12 respectively, and apron 4 is fixed in one side of housing assembly, and housing assembly and apron 4 are around forming air chamber 20.

Referring to fig. 1 and 2 together, the bus bar assembly includes a first conductor 2 and a second conductor 5 in a gas chamber 20, the first conductor 2 including a first end and a second end in a length direction, the second conductor 5 including a first end and a second end in a length direction; and the cover plate 4 is detachable to close or open the air chamber 20. In the assembled state of the busbar arrangement, the cover plate 4 encloses the gas space 20, the side faces of the first end of the first conductor 2 and the first end of the second conductor 5 overlap in the longitudinal direction and are connected together in abutment with one another, the second end of the first conductor 2 is fitted into the first contact 10, and the second end of the second conductor 5 is fitted into the second contact 12. In the disassembled state of the bus bar arrangement, the cover plate 4 opens the air chamber 20, and the first conductor 2 and the second conductor 5 are shaped to be movable towards each other in the length direction so that the second end of the first conductor 2 is disengaged from the first contact 10 and the second end of the second conductor 5 is disengaged from the second contact 12.

Referring to fig. 1 and 2 together, the housing assembly comprises a rigid first housing 1 and a second housing which is telescopic in the length direction. The first housing 1 includes a body 21, a neck 22 extending from the body 21, and a flange 23 extending outward from the neck 22, an interior of the flange 23 and an interior of the neck 22 collectively form the housing opening 13, and the cover plate 4 is detachably provided on the housing opening 13. The second housing may for example comprise a bellows 6, which may be made of steel. In the assembled state of the bus bar arrangement, the bellows 6 is in an extended state, and the first housing 1 and the bellows 6 are joined together, such as may be fastened together by means of screws or the like; in the disassembled state of the bus bar arrangement, the bellows 6 can be contracted and separated from the first housing 1.

Referring to fig. 2, the first conductor 2 and the second conductor 5 are shaped conductors, and the lengths of the first conductor 2 and the second conductor 5 are different. The first conductor 2 includes a first stem portion 215, a first head portion 216, and a first protruding shoulder 217 between the first stem portion 215 and the first head portion 216, the first stem portion 215 being fitted with the first contact 10, the first contact 10 having a first recess 14 adapted to receive the first stem portion 215. The second conductor 5 comprises a second shaft portion 15, a second head portion 16 and a second projecting shoulder 17 between the second shaft portion 15 and the second head portion 16, the second shaft portion 15 being fitted with a second contact 12, the second contact 12 having a second recess 140 adapted to receive the second shaft portion 15. Obviously, the shape of the first head 216 and the first projecting shoulder 217 of the first conductor 2 is the same as the shape of the second head 16 and the second projecting shoulder 17 of the second conductor 5, while the length of the first stem 215 of the first conductor 2 is shorter than the length of the second stem 15 of the second conductor 5.

In the assembled state of the bus bar arrangement shown in fig. 1, with reference also to the reference numerals shown in fig. 2, the side face of the first head 216 of the first conductor 2 is connected together in abutment with the side face of the second head 16 of the second conductor 5, with a first distance between the end face of the first head 216 and the opposite end face of the second projecting shoulder 17 and a second distance between the end face of the second head 16 and the opposite end face of the first projecting shoulder 217, the first distance and the second distance being the same span distance a, the first recess 14 and the second recess 140 having the same depth B, the span distance a being greater than the depth B.

With continued reference to fig. 1, and with reference to the reference numerals shown in fig. 2, the bus bar arrangement further comprises a shield can 3 and a detachable fastening means 18, the shield can 3 being housed around the first head 216 and the first protruding shoulder 217 and the second head 16 and the second protruding shoulder 17 in the assembled state of the bus bar arrangement, the fastening means 18 fastening the shield can 3, the first head 216 and the second head 16 together. The fastening means 18 comprise a first screw passing through the mantle wall of the shielding can 3, through the first head 216, and connecting into a threaded hole on the second head 16, and a second screw passing through the mantle wall of the shielding can 3, through the second head 16, and connecting into a threaded hole on the first head 216.

Still referring to fig. 1, the bus bar arrangement further comprises a first basin insulator 11 and a second basin insulator 19, the first contact 10 being mounted on the first basin insulator 11 and the second contact 12 being mounted on the second basin insulator 19; and the second shell comprises a telescopic corrugated pipe 6, an adjusting screw 7 connected with two ends of the corrugated pipe 6 and a nut 9 matched with the adjusting screw 7, one end of the corrugated pipe 6 is detachably mounted on the second basin-type insulator 19, the other end of the corrugated pipe 6 is detachably mounted on the first shell 1, and the adjusting screw 7 is matched with the nut 9 to adjust and fix the telescopic amount of the corrugated pipe 6. The number of adjustment screws 7 may be at least two, the example in fig. 1 showing two adjustment screws 7 arranged symmetrically around the circumference of the bellows 6. The bus bar device comprises two bridging rows 8 which are arranged at two ends of the corrugated pipe 6 in a bridging mode, the number of the bridging rows 8 can be two, and the bridging rows 8 are arranged so that when induced current exists, the induced current can flow through the bridging rows 8 without damaging the corrugated pipe 6.

Referring to fig. 1 and 2, the length of the first conductor 2 is shorter than the length of the second conductor 5, and the first head 216 and the second head 16 connected to each other are located opposite to the housing opening 13 in the assembled state of the bus bar arrangement. The utility model discloses a such configuration for dismantle this generating line device very easily.

The three functions of the detachable bus bar device of the present invention will be specifically described below with reference to the accompanying drawings.

In fig. 1 it is shown how the bus bar break function is achieved, the operator first removes the cover plate 4, then unscrews the fastening means 18, removes the shielding 3, moves the first conductor 2 to the right and moves the second conductor 5 to the left, since the span distance a is greater than the depth B, so that the first conductor and the second conductor can be separated, achieving the bus bar break function.

In fig. 2, which shows the disassembly and repair function of the bus bar assembly, the operator first removes the cover plate 4, then unscrews the fastening device 18, removes the shielding cover 3, moves the first conductor 2 to the right, and moves the second conductor 5 to the left, and since the span distance a is greater than the depth B, the first conductor and the second conductor can be separated. The operator can then re-compress the bellows 6 and withdraw the first housing 1 and the bellows 6 in turn, which can also be referred to as an adjustment joint.

In fig. 3, the adjustment function of the installation busbar is shown, and an operator can adjust the axial length of the corrugated pipe 6 by adjusting the screw 7 to meet the requirements of absorbing a certain amount of axial installation deviation and manufacturing error, deviation caused by factors such as thermal expansion and cold contraction and the like.

The utility model discloses a bus bar device that can dismantle has following some advantages:

1. this bus bar device can form the bus-bar fracture, promptly, provides a bus bar detachable conductor structure, also can realize dismantling when needs and make things convenient for the operator to overhaul work.

2. The module can be compensated for dimensional deviation and module manufacturing errors during installation.

3. The module is suitable for both three-phase structure modules and single-phase structure modules.

4. Simple structure, convenient production and easy installation.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable bus bar device for a gas insulated switchgear, the bus bar device comprising a housing assembly and a cover plate (4), the housing assembly defining a length direction of the bus bar device between both ends thereof, the housing assembly having a first contact (10) and a second contact (12) provided at both ends thereof, respectively, the cover plate (4) being fixed to one side of the housing assembly, the housing assembly and the cover plate (4) surrounding to form a gas chamber (20), characterized in that,

the bus bar arrangement comprises a first conductor (2) and a second conductor (5) located in the gas chamber (20), the first conductor (2) comprising a first end and a second end in the length direction, the second conductor (5) comprising a first end and a second end in the length direction; and the cover plate (4) is detachable to close or open the air chamber (20);

in the assembled state of the busbar arrangement, the cover plate (4) closes the gas chamber (20), the side of the first end of the first conductor (2) and the side of the first end of the second conductor (5) coincide in the length direction and are connected together in abutment against one another, the second end of the first conductor (2) is fitted into the first contact (10), and the second end of the second conductor (5) is fitted into the second contact (12),

in a disassembled state of the bus bar arrangement, the cover plate (4) opens the gas chamber (20), the first conductor (2) and the second conductor (5) are shaped to be movable towards each other in the length direction to disengage the second end of the first conductor (2) from the first contact (10) and the second end of the second conductor (5) from the second contact (12).

2. The detachable bus bar device according to claim 1, wherein the housing assembly comprises a first rigid housing (1) and a second housing that is retractable in the length direction, the first housing (1) has a housing opening (13) thereon, and the cover plate (4) is detachably provided on the housing opening (13),

in the assembled state of the bus bar arrangement, the second housing is in an extended state, the first housing (1) and the second housing being joined together;

in the disassembled state of the bus bar device, the second shell can be in a contracted state and separated from the first shell (1).

3. The detachable bus bar assembly of claim 2,

the first conductor (2) comprises:

a first shaft section (215) adapted to the first contact (10), the first contact (10) having a first recess (14) adapted to receive the first shaft section (215);

a first head (216); and

a first protruding shoulder (217) between the first stem portion (215) and the first head portion (216);

the second conductor (5) comprises:

a second lever portion (15) fitted with the second contact (12), the second contact (12) having a second recess (140) adapted to receive the second lever portion (15);

a second head (16); and

a second protruding shoulder (17) between the second shank (15) and the second head (16),

in the assembled state of the busbar arrangement, the side faces of the first head (216) and the side faces of the second head (16) are connected together in abutment, there is a first distance between the end face of the first head (216) and the opposite end face of the second projecting shoulder (17), and there is a second distance between the end face of the second head (16) and the opposite end face of the first projecting shoulder (217), the first and second distances being the same span distance (a), the first recess (14) and the second recess (140) having the same depth (B), the span distance (a) being greater than the depth (B).

4. The detachable busbar arrangement according to claim 3, further comprising a shield can (3) and a detachable fastening device (18), the shield can (3) being covered around the first head portion (216) and the first protruding shoulder portion (217) and the second head portion (16) and the second protruding shoulder portion (17) in an assembled state of the busbar arrangement, the fastening device (18) fastening the shield can (3), the first head portion (216) and the second head portion (16) together.

5. The detachable busbar arrangement according to claim 4, wherein the fastening means (18) comprises a first screw passing through the shield wall of the shield (3), through the first head (216) and into a threaded hole on the second head (16), and a second screw passing through the shield wall of the shield (3), through the second head (16) and into a threaded hole on the first head (216).

6. The detachable bus bar assembly of claim 2,

the bus arrangement further comprises a first basin insulator (11) and a second basin insulator (19), the first contact (10) being mounted on the first basin insulator (11) and the second contact (12) being mounted on the second basin insulator (19);

and the second casing including bellows (6) that can stretch out and draw back, with adjusting screw (7) that the both ends of bellows (6) are connected and with adjusting screw (7) complex nut (9), the one end of bellows (6) can install in with dismantling second basin formula insulator (19), the other end of bellows (6) install in first casing (1), adjusting screw (7) with nut (9) cooperation is with the adjustment and fixed the flexible volume of bellows (6).

7. The detachable bus arrangement according to claim 6, characterized in that the number of the adjusting screws (7) is at least two, the adjusting screws (7) being symmetrically arranged around the circumference of the corrugated tube (6).

8. The detachable bus bar arrangement according to claim 3, wherein the length of the first conductor (2) is shorter than the length of the second conductor (5), and the first head (216) and the second head (16) connected to each other are located opposite the housing opening (13) in the assembled state of the bus bar arrangement.

9. The detachable busbar arrangement according to claim 6, characterized in that it comprises a jumper (8) placed across both ends of the corrugated tube (6).

10. The detachable bus bar arrangement according to claim 2, wherein the first housing (1) comprises a body (21), a neck (22) extending from the body (21), and a flange (23) extending outwardly from the neck (22), an interior of the flange (23) and an interior of the neck (22) together forming the housing opening (13).