CN109755891B - Bus assembly and gas-insulated metal-enclosed switchgear - Google Patents
Bus assembly and gas-insulated metal-enclosed switchgear Download PDFInfo
- Publication number
- CN109755891B CN109755891B CN201910089323.5A CN201910089323A CN109755891B CN 109755891 B CN109755891 B CN 109755891B CN 201910089323 A CN201910089323 A CN 201910089323A CN 109755891 B CN109755891 B CN 109755891B
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- bus bar
- bus
- pull rod
- tie
- assembly
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- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract 2
- 238000009434 installation Methods 0.000 abstract description 8
- 238000011900 installation process Methods 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 description 9
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
A busbar assembly for a gas insulated metal enclosed switchgear comprises two busbar barrels (10), a bellows (20) and two tie rod assemblies (30). The bellows is arranged between the two bus barrels. Each tie rod assembly comprises at least two tie rods (40), at least one clamping piece (50) and at least one sleeve (60). The tie rods are coaxially arranged and respectively positioned at two ends of the tie rods are correspondingly connected with two bus bars, and the adjacent tie rods are provided with bosses (42) on the circumferential surfaces of the opposite ends. The clamping piece is sleeved at the two end parts, a fixing groove with a shape corresponding to the boss is formed in the clamping piece, the movement of the two end parts can be limited, and the clamping piece is formed by splicing a plurality of clamping parts (52). The sleeve can be sleeved on the clamping piece. The bus assembly provided by the invention avoids high-strength work when the bolts are locked in the installation process, and is more convenient for installation and operation. The invention also relates to a gas insulated metal-enclosed switchgear comprising the bus bar assembly.
Description
Technical Field
The present invention relates to a bus bar assembly, and more particularly to a bus bar assembly for a gas insulated metal-enclosed switchgear. The invention also relates to a gas insulated metal-enclosed switchgear comprising the bus bar assembly.
Background
In a gas-insulated metal-enclosed switchgear (hereinafter referred to as GIS device), axial expansion and contraction of a bus barrel can generate great stress inside the barrel, and damage to the device is great. At present, the GIS equipment mostly adopts a corrugated pipe connected between cylinders to absorb the expansion caused by heat and contraction caused by cold of a bus cylinder, and the length of the GIS equipment is limited by connecting a plurality of sections of pull rods with the cylinders. In the existing GIS equipment, the pull rods are connected through threaded pipes and nuts, and the locking threads are fastened by very large torque in the installation process, so that the operation is inconvenient.
Disclosure of Invention
The invention aims to provide a bus assembly for gas-insulated metal-enclosed switchgear, which can absorb stress generated by expansion and contraction of a bus tube in the axial direction and facilitate the installation operation of a pull rod.
Another object of the present invention is to provide a gas insulated metal-enclosed switchgear capable of absorbing stress generated in an axial direction by expansion and contraction of a bus bar cylinder and facilitating installation operation of a pull rod.
The invention provides a bus assembly of gas-insulated metal-enclosed switchgear, which comprises two bus barrels, a corrugated pipe and two pull rod assemblies. Each bus tube is provided with a limiting end and an adjusting end, and the two bus tubes are coaxially arranged and the two adjusting ends are opposite. The bellows is arranged between the two bus barrels and is respectively connected with the two adjusting ends. Each pull rod assembly comprises at least two pull rods, at least one clamping piece and at least one sleeve. The two pull rods are coaxially arranged and parallel to the axial direction of the bus tube, the two pull rods at the two ends are respectively connected with the two limiting ends in a one-to-one correspondence manner, and each two adjacent pull rods are provided with bosses extending out along the radial direction on the circumferential surfaces of the two opposite ends. The clamping piece is correspondingly sleeved at two opposite end parts of each two adjacent pull rods, a fixing groove with a shape corresponding to the boss is formed in the clamping piece, the two opposite end parts can be limited to move relatively along the radial direction or the axial direction of the pull rods, the clamping piece is formed by splicing a plurality of clamping parts, and each clamping part is abutted against the two adjacent end parts along the radial direction of the pull rod. The sleeve pipes can be sleeved on the clamping pieces in a one-to-one correspondence manner along the axial direction of the pull rod, and the clamping parts are abutted against and limited to move along the radial direction of the pull rod.
The bus assembly of the gas-insulated metal-enclosed switchgear is characterized in that a corrugated pipe is arranged between two bus barrels, and stress generated in the axial direction due to expansion and contraction of the bus barrels is absorbed through expansion and contraction of the corrugated pipe. While the total length of the bus bar barrel and the corrugated tube is limited by a plurality of pull rod assemblies. The clamping piece formed by splicing and the sleeve pipe connection sleeved on the clamping piece replace the prior bolt connection between the pull rods, so that the high-strength work during the locking of the bolts in the installation process is avoided, and the installation operation is more convenient.
In another exemplary embodiment of the busbar assembly, the boss is a circular boss, which facilitates processing of the screw and reduces processing costs.
In yet another exemplary embodiment of the busbar assembly, the engagement member has a cylindrical outer contour coaxial with the pull rod when sleeved on the pull rod, and the sleeve is a circular tube coaxially sleeved on the engagement member. Therefore, the processing of the clamping piece and the sleeve is facilitated, and the processing cost can be reduced.
In yet another exemplary embodiment of the busbar assembly, the engagement portion is divided by the engagement member along an axial section. Therefore, the processing of the clamping piece is convenient, the processing cost can be reduced, and the operation is convenient.
In yet another exemplary embodiment of the bus assembly, the wall of the sleeve is formed with a positioning screw hole therethrough, the circumferential outer surface of the engaging member is formed with a positioning groove extending in the circumferential direction, and the pull rod assembly further includes a positioning screw which is screwed to the sleeve through the positioning screw hole and can abut against the positioning groove. Therefore, after the installation is completed, the position of the sleeve relative to the clamping piece is limited by the set screw, and the reliability of connection is improved.
In yet another exemplary embodiment of the busbar assembly, each busbar tube has a flange at the limiting end, the flange being formed with a fixing hole axially parallel to the axis of the busbar tube. The connecting screw hole is formed in one end, which faces the limiting end, of the pull rod connected with the limiting end, the connecting screw hole is formed in one end, which faces the limiting end, of the pull rod, and the bus assembly further comprises a connecting bolt which can penetrate through the fixing hole and is connected with the pull rod through the connecting screw hole in a threaded mode. The simple structure realizes the connection of the pull rod and the bus tube, and the cost can be reduced.
In yet another exemplary embodiment of the bus bar assembly, a plurality of tie bar assemblies are uniformly arranged along the circumference of the bus bar cylinder and the bellows, thereby providing uniform tension to the bus bar cylinder.
In yet another exemplary embodiment of the bus bar assembly, each tie bar assembly has two tie bars for ease of installation and operation.
The invention also provides gas-insulated metal-enclosed switchgear comprising at least one bus and the bus assembly. The bus tube and the corrugated tube are sleeved on the bus.
The above features, technical features, advantages and implementation of the bus bar assembly and the gas insulated metal-enclosed switchgear will be further described in a clear and understandable manner by describing preferred embodiments with reference to the accompanying drawings.
Drawings
The following drawings are only illustrative of the invention and do not limit the scope of the invention.
FIG. 1 is a schematic structural view of an exemplary embodiment of a bus bar assembly.
FIG. 2 is a schematic cross-sectional structural view of the tie rod assembly.
Fig. 3 is an enlarged partial schematic view of the iii position of fig. 2.
Fig. 4 is an enlarged partial schematic view of the iv position of fig. 2.
Fig. 5 is a partially exploded schematic view of the tie rod assembly.
FIG. 6 is another partially exploded schematic view of the tie rod assembly.
Description of the reference numerals
10. Bus tube
12. Limiting end
13. Flange
14. Adjusting end
15. Fixing hole
16. Connecting bolt
20. Corrugated pipe
30. Pull rod assembly
40. Pull rod
42. Boss
44. Connecting screw hole
50. Clamping piece
52. Engagement portion
53. Groove(s)
54. Positioning groove
60. Casing pipe
62. Positioning screw hole
63. Positioning screw
Detailed Description
For a clearer understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals refer to identical or structurally similar but functionally identical components throughout the separate views.
In this document, "schematic" means "serving as an example, instance, or illustration," and any illustrations, embodiments described herein as "schematic" should not be construed as a more preferred or advantageous solution.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. In addition, for simplicity and ease of understanding, components having the same structure or function in some of the figures are shown schematically only one of them, or only one of them is labeled.
FIG. 1 is a schematic structural view of an exemplary embodiment of a bus bar assembly. Referring to fig. 1, the bus bar assembly includes two bus bar barrels 10, one bellows 20, and two tie bar assemblies 30.
The bus bar barrel 10 has a limiting end 12 and an adjusting end 14, the two bus bar barrels 10 being coaxially disposed with the two adjusting ends 14 opposite. The bellows 20 has the ability to expand and contract in the axial direction, is disposed between the two bus bars 10 and is connected to the two adjustment ends 14, respectively, and the bellows 20 absorbs the expansion and contraction of the bus bars 10 at the adjustment ends 14 by expanding and contracting. In use, the bus bar 10 and the bellows 20 are filled with an insulating gas at a certain pressure, so that the insulating gas will exert a pressure on the insulating barrier at the limiting end of the bus bar. The bellows 20 may be connected to the bus bar 10 at the ends by flanges as shown in the figures, or may be sleeved on the two adjustment ends 14 of the bus bar 10 and meet the sealing requirement.
Fig. 2 is a schematic cross-sectional view of the drawbar assembly, and fig. 3 and 4 are enlarged partial views of positions iii and iv of fig. 2, respectively. Referring to fig. 2 in combination with fig. 1, the tie rod assemblies 30 are uniformly arranged along the circumference of the bus bar cylinder 10 and the bellows 20, thereby providing uniform tension to the bus bar cylinder 10. Each tie rod assembly 30 includes two tie rods 40, a snap member 50 and a sleeve 60. The pull rods 40 are coaxially arranged and parallel to the axial direction of the bus bar barrel 10, and two pull rods 40 respectively positioned at two ends are connected with two limiting ends 12 in a one-to-one correspondence manner. In the exemplary embodiment, each busbar tube 10 has a flange 13 at the limiting end 12, and the flange 13 has a fastening hole 15 formed therein, which is axially parallel to the axial direction of the busbar tube 10. The end of the pull rod 40 connected with the limiting end 12 facing the limiting end 12 is formed with a connecting screw hole 44 opened along the axial direction of the pull rod 40, and the bus assembly further comprises a connecting bolt 16 capable of penetrating the fixing hole 15 and being connected to the pull rod 40 by the connecting screw hole 44. The connection between the pull rod 40 and the bus bar barrel 10 is realized by the simple structure, so that the overall cost can be reduced, and the assembly is convenient. However, without limitation, the tie rod 40 may be connected to the restraining end 12 of the bus bar 10 in other exemplary embodiments in other manners.
In the illustrated embodiment, referring to fig. 4, each adjacent two tie rods 40 are formed with radially protruding bosses 42 on circumferential surfaces of opposite ends. The engaging members 50 are correspondingly sleeved at two opposite ends of each two adjacent pull rods 40, and fixing grooves 53 with corresponding shapes of the bosses 42 are formed in the engaging members 50 and can limit the relative movement of the two opposite ends along the radial direction or the axial direction of the pull rods 40. Fig. 5 and 6 are partially exploded schematic views of the tie rod assembly. Referring to fig. 5 and 6, the engaging piece 50 is formed by combining two engaging portions 52, and each engaging portion 52 abuts against the two adjacent end portions in the radial direction of the pull rod 40, but the present invention is not limited thereto, and in other exemplary embodiments, one engaging piece 50 may be formed by combining a plurality of engaging portions 52 in other numbers according to actual needs. The sleeve 60 can be sleeved on the clamping piece 50 along the axial direction of the pull rod 40, and abuts against and limits the radial movement of the clamping part 52 along the pull rod 40.
Although each tie rod assembly 30 has only two tie rods 40 in the illustrated embodiment, it both prevents deformation due to excessive length of the tie rods and facilitates installation of the tie rod assembly 30. However, the present invention is not limited thereto, and in other exemplary embodiments, the number of tie rods 40 of each tie rod assembly 30 may be plural according to actual situations, and the engaging member 50 and the sleeve 60 may be correspondingly plural.
In the bus assembly of the gas-insulated metal-enclosed switchgear, a corrugated pipe 20 is arranged between two bus cylinders 10, and displacement and stress generated in the axial direction by expansion and contraction of the bus cylinders 10 are absorbed by expansion and contraction of the corrugated pipe 20. Meanwhile, the total length of the bus bar barrel 10 and the corrugated pipe 20 is limited by means of the plurality of pull rod assemblies 30, so that damage to other devices of the GIS equipment caused by the change of the total length of the bus bar assemblies is avoided. The pull rods 40 are connected through the clamping piece 50 formed by splicing and the sleeve 60 sleeved on the clamping piece 50, so that the existing bolt connection between the pull rods is replaced, the high-strength work during locking of bolts in the installation process is avoided, and the installation operation is facilitated.
In an exemplary embodiment, referring to fig. 5 and 6, the boss 42 is a circular boss. The engaging member 50 has an outer contour of a cylinder coaxial with the pull rod 40 when being sleeved on the pull rod 40, and a corresponding annular groove 53 is formed inside the engaging member, and the engaging portion 52 is formed by dividing the engaging member 50 along an axial section. The sleeve 60 is a circular tube coaxially sleeved on the engaging member 50. The above-described shapes of the boss 42, the engaging member 50 and the sleeve 60 all belong to a structure that is convenient for processing, and processing cost can be reduced while being convenient for operation. However, without limitation, in other exemplary embodiments, the boss 42 may take other shapes depending on the actual needs or manufacturing constraints. The outer contour of the engaging member 50 may be other shapes extending in one direction, such as a cube or a prism. The sleeve 60 may be a tube body having an inner cavity corresponding to the engaging member 50.
In the illustrated embodiment, referring to fig. 4, the wall of the sleeve 60 is formed with a positioning screw hole 62 therethrough, the circumferential outer surface of the engaging member 50 is formed with a positioning groove 54 extending in the circumferential direction, and the pull rod assembly 30 further includes a positioning screw 63 screwed to the sleeve 60 through the positioning screw hole 62 and capable of abutting against the positioning groove 54. Therefore, after the sleeve 60 is installed, the sleeve 60 can be limited to be positioned relative to the clamping piece 50 by the positioning screw 63 abutting against the positioning groove 54, so that the sleeve 60 is prevented from sliding off the clamping piece 50, and the reliability of connection is improved.
The invention also provides gas-insulated metal-enclosed switchgear comprising at least one bus and the bus assembly. The bus bar tube 10 and the corrugated tube 20 are sleeved on the bus bar.
It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical examples of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of features, without departing from the technical spirit of the present invention are included in the scope of the present invention.
Claims (9)
1. A bus bar assembly for a gas insulated metal-enclosed switchgear, comprising:
two bus bars (10), each bus bar (10) having a limiting end (12) and an adjusting end (14), the two bus bars (10) being coaxially arranged and the two adjusting ends (14) being opposite;
a bellows (20) arranged between the two bus bars (10) and respectively connected to the two adjustment ends (14); and
A plurality of tie rod assemblies (30), each of the tie rod assemblies (30) comprising:
at least two tie rods (40), wherein the at least two tie rods (40) are coaxially arranged and parallel to the axial direction of the bus bar cylinder (10), the two tie rods (40) at two ends are respectively connected with two limiting ends (12) in one-to-one correspondence, each two adjacent tie rods (40) are provided with a boss (42) extending along the radial direction on the circumferential surfaces of the two opposite ends,
at least one engaging member (50) correspondingly sleeved at two opposite end parts of each adjacent two pull rods (40), wherein a fixing groove (53) with a shape corresponding to the boss (42) is formed in the engaging member (50) and can limit the relative movement of the two opposite end parts along the radial direction or the axial direction of the pull rods (40), the engaging member (50) is formed by splicing a plurality of engaging parts (52), each engaging part (52) respectively abuts against the two opposite end parts along the radial direction of the pull rods (40), and
and the sleeve pipes (60) can be sleeved on the clamping pieces (50) in a one-to-one correspondence manner along the axial direction of the pull rod (40), and abut against and limit the radial movement of the clamping parts (52) along the pull rod (40).
2. The busbar assembly of claim 1, wherein the boss (42) is an annular boss.
3. The bus bar assembly according to claim 1, wherein the engaging member (50) has a cylindrical outer contour coaxial with the pull rod (40) when being sleeved on the pull rod (40), and the sleeve (60) is a circular tube coaxially sleeved on the engaging member (50).
4. A busbar assembly according to claim 3, wherein the engagement portion (52) is divided by the engagement member (50) along an axial section.
5. A busbar assembly according to claim 3, wherein a positioning screw hole (62) is formed in a wall of each sleeve (60), a positioning groove (54) extending in a circumferential direction is formed in a circumferential outer surface of the engaging member (50), and the pull rod assembly (30) further comprises a positioning screw (63) which is screwed to the sleeve (60) through the positioning screw hole (62) and can abut against the positioning groove (54).
6. The bus bar assembly of claim 1 wherein,
the busbar tube (10) is provided with a flange (13) at the limiting end (12), and a fixing hole (15) axially parallel to the axial direction of the busbar tube (10) is formed on the flange (13);
the bus assembly further comprises a connecting bolt (16) which can penetrate through the fixing hole (15) and is connected with the pull rod (40) through threads of the connecting screw hole (44), wherein the connecting screw hole (44) is formed in one end, which faces the limiting end (12), of the pull rod (40) and is formed in the axial direction of the pull rod (40).
7. The bus bar assembly according to claim 1, wherein the plurality of tie bar assemblies (30) are uniformly arranged along the circumference of the bus bar cylinder (10) and the bellows (20).
8. The bus bar assembly of claim 1, wherein each of the tie bar assemblies (30) has two of the tie bars (40).
9. A gas insulated metal enclosed switchgear characterized by comprising:
at least one busbar; and
The bus bar assembly according to any one of claims 1 to 8, the bus bar barrel (10) and the bellows (20) being sleeved on the bus bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089323.5A CN109755891B (en) | 2019-01-30 | 2019-01-30 | Bus assembly and gas-insulated metal-enclosed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089323.5A CN109755891B (en) | 2019-01-30 | 2019-01-30 | Bus assembly and gas-insulated metal-enclosed switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109755891A CN109755891A (en) | 2019-05-14 |
| CN109755891B true CN109755891B (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910089323.5A Active CN109755891B (en) | 2019-01-30 | 2019-01-30 | Bus assembly and gas-insulated metal-enclosed switchgear |
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| Country | Link |
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| CN (1) | CN109755891B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117663B (en) * | 2019-06-20 | 2023-01-03 | 河南平芝高压开关有限公司 | GIS bus device and GIS sleeve interphase guide row assembly |
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| CN202111407U (en) * | 2010-08-23 | 2012-01-11 | 沈阳华利能源设备制造有限公司 | Dry air insulated metal enclosed switchgear |
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| KR101476149B1 (en) * | 2014-09-05 | 2014-12-26 | 제룡전기 주식회사 | Bellows of gas insulated switching apparatus for resisting earthquake |
| CN205304076U (en) * | 2015-12-30 | 2016-06-08 | 青海省电力设计院 | GIS prevents drawing breakage can observe a deformation generating line section of thick bamboo |
| CN206481017U (en) * | 2017-01-09 | 2017-09-08 | 河南平高电气股份有限公司 | A kind of busbar assembly and the GIS device using the busbar assembly |
| CN107171232A (en) * | 2017-06-14 | 2017-09-15 | 国网辽宁省电力有限公司鞍山供电公司 | The kilovolt middle-placed cabinet high-pressure vacuum breaker static contact head device of charged for replacement 10 and method |
| CN209217563U (en) * | 2019-01-30 | 2019-08-06 | 上海西门子高压开关有限公司 | Busbar assembly and Cubicle Gas-Insulated Switchgear |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10246598A1 (en) * | 2002-10-05 | 2004-04-15 | Alstom | Busbar coupling especially for gas-insulated medium- voltage switchgear, has bellows mounted between switch-bays and filled with insulating gas |
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2019
- 2019-01-30 CN CN201910089323.5A patent/CN109755891B/en active Active
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| EP0667663A1 (en) * | 1994-02-11 | 1995-08-16 | AEG Sachsenwerk GmbH | Switchgear with connection channel |
| JPH0974630A (en) * | 1995-09-01 | 1997-03-18 | Toshiba Corp | Disconnectable bus device and method for disconnection thereof |
| JP2000069628A (en) * | 1998-08-24 | 2000-03-03 | Mitsubishi Electric Corp | Gas-insulated switchgear |
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| CN205304076U (en) * | 2015-12-30 | 2016-06-08 | 青海省电力设计院 | GIS prevents drawing breakage can observe a deformation generating line section of thick bamboo |
| CN206481017U (en) * | 2017-01-09 | 2017-09-08 | 河南平高电气股份有限公司 | A kind of busbar assembly and the GIS device using the busbar assembly |
| CN107171232A (en) * | 2017-06-14 | 2017-09-15 | 国网辽宁省电力有限公司鞍山供电公司 | The kilovolt middle-placed cabinet high-pressure vacuum breaker static contact head device of charged for replacement 10 and method |
| CN209217563U (en) * | 2019-01-30 | 2019-08-06 | 上海西门子高压开关有限公司 | Busbar assembly and Cubicle Gas-Insulated Switchgear |
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| Publication number | Publication date |
|---|---|
| CN109755891A (en) | 2019-05-14 |
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