CN114765357A - A busbar combination unit - Google Patents
A busbar combination unit Download PDFInfo
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- CN114765357A CN114765357A CN202110043829.XA CN202110043829A CN114765357A CN 114765357 A CN114765357 A CN 114765357A CN 202110043829 A CN202110043829 A CN 202110043829A CN 114765357 A CN114765357 A CN 114765357A
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- China
- Prior art keywords
- cylinder
- unit
- bus bar
- bus
- lengthened
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/061—Tubular casings
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- Gas-Insulated Switchgears (AREA)
Abstract
本发明涉及一种母线组合单元。母线组合单元，包括：第一母线单元，包括第一筒体和第一导电杆，第一导电杆通过固定支柱绝缘子固定支撑在第一筒体内；第二母线单元，包括第二筒体和第二导电杆，第二导电杆通过固定支柱绝缘子固定支撑在第二筒体内；所述第一筒体和第二筒体的相对端固定连接，两个导电杆中的其中一个上设有加长触头，两个导电杆中的另一个上设有加长触座，加长触头与加长触座沿相应导电杆的轴向导向插接配合，加长触头与加长触座的插接配合长度大于故障母线单元的导电杆凸出其筒体的长度；所述第一筒体和/或第二筒体上设有波纹管，在波纹管伸缩的过程中加长触头和加长触座始终保持导电连接。
The invention relates to a busbar combination unit. The busbar combination unit includes: a first busbar unit, including a first cylinder and a first conductive rod, the first conductive rod is fixed and supported in the first cylinder through a fixed post insulator; a second busbar unit, including a second cylinder and a first conductive rod. Two conductive rods, the second conductive rod is fixed and supported in the second cylinder through the fixed post insulator; the opposite ends of the first cylinder and the second cylinder are fixedly connected, and one of the two conductive rods is provided with an extended contact The other one of the two conductive rods is provided with an extended contact seat, the extended contact and the extended contact seat are aligned along the axial direction of the corresponding conductive rod, and the length of the extended contact and the extended contact seat is greater than the fault The conductive rod of the busbar unit protrudes from the length of the cylinder body; the first cylinder body and/or the second cylinder body is provided with a bellows, and the extension contact and the extension contact seat always maintain a conductive connection during the expansion and contraction of the bellows .
Description
Technical Field
The invention relates to a busbar combination unit.
Background
GIL is a high voltage, large current, long distance power transmission device, is the preferred scheme of large-scale underground power station lead-out wire, is also the preferred scheme of solving big city transmission corridor tension problem, therefore, GIL is gradually replacing overhead line and cable. With the large-scale application of the GIL, the operation, maintenance and overhaul of the GIL are necessary, the GIL line is generally longer, and if a fault occurs in the operation, part of units need to be disassembled for overhaul.
Chinese patent application publication No. CN104538916A discloses a rigid gas-insulated transmission line, which, when a faulty bus unit is disassembled, first and second basic bus units are disassembled from a detachable bus unit, and the detachable bus unit is disassembled, so that a GIL line is untied, and then the faulty bus unit is disassembled. The disassembly mode is complex, the labor intensity is high, and the working efficiency is influenced.
Disclosure of Invention
The invention aims to provide a bus combination unit to solve the technical problem that in the prior art, when a power transmission line is disassembled, a fault bus unit is disassembled, the disassembly is complex.
In order to achieve the purpose, the technical scheme of the bus combination unit is as follows:
a bus bar combining unit comprising:
the first bus unit comprises a first cylinder and a first conducting rod, and the first conducting rod is fixedly supported in the first cylinder through a fixed support insulator;
the second bus unit comprises a second cylinder and a second conducting rod, and the second conducting rod is fixedly supported in the second cylinder through a fixed support insulator;
the opposite ends of the first cylinder and the second cylinder are fixedly connected, one of the two conducting rods is provided with a lengthened contact, the other conducting rod is provided with a lengthened contact seat, the lengthened contact and the lengthened contact seat are in inserting fit along the axial direction of the corresponding conducting rod, and the inserting fit length of the lengthened contact and the lengthened contact seat is greater than the length of the conducting rod of the fault bus unit protruding out of the cylinder;
the first cylinder and/or the second cylinder are/is provided with a corrugated pipe, and the lengthened contact seat are/is always in conductive connection in the telescopic process of the corrugated pipe.
The beneficial effects are that: when the corrugated pipe works normally, the corrugated pipe plays a role in normal temperature compensation, and at the moment, the inserting fit length of the lengthened contact and the lengthened contact seat is the same as that of the standard contact and the standard contact seat; when a fault bus unit occurs, firstly removing the fault bus unit and the flange connection of the bus unit connected with the fault bus unit, then compressing the corrugated pipes of the two bus combination units, fully inserting and matching the lengthened contact and the lengthened contact seat by absorbing the displacement difference generated by the compression of the corrugated pipes, and simultaneously, removing the axial two sides of the fault bus unit to ensure that the fault bus unit meets the removing condition, and then removing the fault bus unit. The busbar combination unit is simple in structure, few in sealing surface, and provided with an axial compensation function and a disassembly function, the integral SF6 gas leakage amount of the GIL project is reduced, the busbar combination unit is suitable for the long-distance GIL project, the disassembly steps are simplified, the labor intensity is reduced, and the working efficiency is improved.
Further, the bellows are disposed adjacent to the respective fixed post insulators.
The beneficial effects are that: therefore, the fixed post insulator can be used as a supporting point, so that the expansion and contraction of the corrugated pipe can be adjusted through the adjusting nut.
Further, the bellows are provided at the end of the respective cylinder.
The beneficial effects are that: this reduces the number of seal faces and the overall gas leakage from the GIL.
Furthermore, a shielding cover is arranged on the lengthened contact.
The beneficial effects are that: the shielding cover can uniformly lengthen the electric field at the joint of the contact and the lengthened contact seat, thereby reducing the electric field intensity at the joint.
Furthermore, a guide ring is arranged on the inner side of the shielding cover.
The beneficial effects are that: the guide ring is convenient for guide extension contact base to enter into between shield cover and the extension contact, avoids mutual friction.
Drawings
Fig. 1 is a schematic structural diagram of a bus bar combination unit according to an embodiment 1 of the present invention during normal operation;
FIG. 2 is a schematic structural diagram of the joint of the first cylinder and the second cylinder in FIG. 1;
FIG. 3 is a schematic view of the bellows of FIG. 1 after compression;
FIG. 4 is a schematic structural diagram of the joint of the first cylinder and the second cylinder in FIG. 3;
fig. 5 is a schematic structural diagram of the bus bar assembly unit of embodiment 2 of the present invention during normal operation;
FIG. 6 is a schematic view of the bellows of FIG. 5 after compression;
in the figure: 101-a first busbar unit; 102-a second busbar unit; 103-standard bus bar unit; 11-a first cylinder; 12-a second cylinder; 13-a bellows; 14-lengthening the contact base; 15-lengthening the contact; 16-a third cylinder; 17-standard contact base; 18-standard contact; 19-fixing post insulators; 20-sliding post insulators; 21-a first conductive rod; 22-a second conductive rod; 23-a third conductive rod; 24-a shield; 25-a screw; 26-a guide ring; 27-adjusting screw; 28-an adjusting nut; 29-spring contact finger.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, the terms "upper" and "lower" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the referred device or component must have a specific orientation, and thus, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1 of the bus bar combination unit of the invention:
as shown in fig. 1 and 2, the GIL includes two bus bar combination units, and the standard bus bar unit 103 is disposed between the two bus bar combination units, in this embodiment, the number of the standard bus bar unit 103 is one, and in other embodiments, the number of the standard bus bar unit may be set according to the number.
In this embodiment, the standard bus bar unit includes a third cylinder 16 and a third conductive rod 23, the third conductive rod 23 is disposed in the third cylinder 16, specifically, a fixed post insulator 19 and two sliding post insulators 20 are disposed in the third cylinder, the two sliding post insulators 20 are disposed, and the third conductive rod 23 is fixedly supported in the third cylinder 16 through the fixed post insulator 19 and the two sliding post insulators 20. Wherein, one end of the third conducting rod 23 is provided with a standard contact seat 17, and the other end of the third conducting rod 23 is provided with a standard contact 18. Wherein the standard contact seat 17 is located in the third cylinder 16 and the standard contact 18 is arranged to protrude from the third cylinder 16.
In this embodiment, the bus bar combination unit includes a first bus bar unit 101 and a second bus bar unit 102 connected together, the first bus bar unit 101 includes a first cylinder 11 and a first conductive rod 21, the first conductive rod 21 is disposed in the first cylinder 11, specifically, a fixed post insulator 19 and two sliding post insulators 20 are disposed in the first cylinder 11, the two sliding post insulators 20 are disposed, and the first conductive rod 21 is fixedly supported in the first cylinder 11 through the fixed post insulator 19 and the two sliding post insulators 20. One end of the first conductive rod 21 is provided with an elongated contact seat 14, the other end of the first conductive rod 21 is provided with a standard contact 18, the elongated contact seat 14 is located in the first cylinder 11, and the standard contact 18 protrudes out of the first cylinder 11.
In this embodiment, the second bus bar unit 102 includes a second cylinder 12 and a second conductive rod 22, the second conductive rod 22 is disposed in the second cylinder 12, specifically, a fixed post insulator 19 and two sliding post insulators 20 are disposed in the second cylinder 12, the two sliding post insulators 20 are disposed, and the second conductive rod 22 is fixedly supported in the second cylinder 12 through the fixed post insulator 19 and the two sliding post insulators 20. One end of the second conducting rod 22 is provided with an elongated contact 15, the other end of the second conducting rod 22 is provided with a standard contact seat 17, the standard contact seat 17 is located in the second cylinder 12, and the elongated contact 15 protrudes out of the second cylinder 12.
As shown in fig. 2, the opposite ends of the first cylinder 11 and the second cylinder 12 are fixedly connected by flanges, and the elongated contact seat 14 on the first conductive rod 21 is in guiding insertion fit with the elongated contact 15 on the second conductive rod 22. Wherein, the spring contact finger 29 is arranged in the lengthened contact seat 14 to ensure good conductivity of the lengthened contact seat 14 and the lengthened contact 15.
In this embodiment, the length of the insertion fit between the lengthened contact 15 and the lengthened contact seat 14 is greater than the length of the conductive rod of the fault bus unit protruding out of the cylinder, so that when the lengthened contact 15 and the lengthened contact seat 14 are completely inserted and fitted, the end of the conductive rod of the fault bus unit can be set aside, and the fault bus unit is disassembled for maintenance.
In this embodiment, the shielding cover 24 is fixed to the elongated contact 15 through a screw 25, and the shielding cover 24 can uniformly lengthen the electric field at the connection position of the contact 15 and the elongated contact base 14, thereby reducing the electric field intensity at the connection position.
In this embodiment, the inner side of the end of the shielding case 24 is provided with a guide ring 26, and the guide ring 26 is convenient for guiding the elongated contact seat 14 to enter between the shielding case 24 and the elongated contact 15, so as to avoid mutual friction.
As shown in fig. 2, the end of the second cylinder 12 is provided with a bellows 13, and the second cylinder 12 is fixedly connected with the first cylinder 11 through the bellows 13, so that the sealing surface can be reduced, and the gas leakage of the whole GIL can be reduced. Wherein, an adjusting screw 27 is arranged between the two flanges of the corrugated pipe 13, and an adjusting nut 28 is connected to the adjusting screw 27 by screw thread.
In this embodiment, the bellows 13 is disposed close to the fixed post insulator 19, so that the fixed post insulator 19 can be used as a supporting point to adjust the expansion and contraction of the bellows 13 by the adjusting nut 28.
The normal working state of the GIL is shown in fig. 1 and fig. 2, the corrugated pipe 13 plays a role of normal temperature compensation, and at this time, the plug-in fit length of the lengthened contact 15 and the lengthened contact seat 14 is the same as that of the standard contact 18 and the standard contact seat 17; when the standard bus unit 103 has a fault, the standard bus unit 103 and the flange connection of the bus unit connected to the standard bus unit are removed first, the corrugated pipes 13 of the two bus combination units are compressed again, the lengthened contacts 15 and the lengthened contact seats 14 absorb the displacement difference generated by the compression of the corrugated pipes 13 to be sufficiently inserted and matched, meanwhile, disassembly spaces are formed on two axial sides of the standard bus unit 103, as shown in fig. 3 and 4, so that the standard bus unit 103 meets the disassembly conditions, and then the standard bus unit is disassembled.
The GIL in the embodiment has the advantages of simple structure, few sealing surfaces, axial compensation function and disassembly function, reduces the integral SF6 gas leakage rate of the GIL engineering, and is suitable for long-distance GIL engineering.
Example 2 of a bus bar combining unit of the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the faulty bus bar unit is a standard bus bar unit. In this embodiment, the faulty bus unit is one of the bus bar combination units, taking the second bus bar unit 102 as an example, as shown in fig. 5, the GIL includes three sets of bus bar combination units, a standard bus bar unit 103 is disposed between two adjacent sets of bus bar combination units, when the second bus bar unit 102 in the middle bus bar combination unit has a fault of outgoing line, the bellows 13 of the other two bus bar combination units are compressed, so that the two axial sides of the second bus bar unit 102 have a disassembly space, as shown in fig. 6, so that the second bus bar unit 102 satisfies the disassembly condition, and then the second bus bar unit 102 is disassembled. When the first bus bar unit 101 is a faulty bus bar unit, the disassembly method is the same as the disassembly method of the second bus bar unit 102. The number of the standard bus bar units between two adjacent sets of bus bar combination units can be more than that.
Example 3 of the bus bar combination unit of the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the bellows 13 is provided on the second cylinder 12. In this embodiment, the bellows is disposed on the first cylinder. In other embodiments, bellows may be provided on both the first cylinder and the second cylinder.
Example 4 of a bus bar combining unit of the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the bellows 13 is located near the fixed post insulator 19 and at the end of the second cylinder 12. In this embodiment, the bellows is provided between the fixed post insulator and the sliding post insulator based on the bellows being close to the fixed post insulator.
Example 5 of a bus bar combining unit of the invention:
this embodiment differs from embodiment 1 in that in embodiment 1, the bellows 13 is located near the fixed post insulator 19 and at the end of the second cylinder 12. In this embodiment, the bellows is located in the middle of the second cylinder and is disposed between the two sliding post insulators.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (5)
1. Busbar modular unit, its characterized in that includes:
the first bus unit comprises a first cylinder and a first conducting rod, and the first conducting rod is fixedly supported in the first cylinder through a fixed support insulator;
the second bus unit comprises a second cylinder and a second conducting rod, and the second conducting rod is fixedly supported in the second cylinder through a fixed support insulator;
the opposite ends of the first cylinder and the second cylinder are fixedly connected, one of the two conducting rods is provided with a lengthened contact head, the other of the two conducting rods is provided with a lengthened contact seat, the lengthened contact head and the lengthened contact seat are in inserted fit along the axial direction of the corresponding conducting rod, and the length of the inserted fit of the lengthened contact head and the lengthened contact seat is greater than the length of the conducting rod of the fault bus unit protruding out of the cylinder;
the first cylinder and/or the second cylinder are/is provided with a corrugated pipe, and the lengthening contact seat are always in conductive connection in the telescopic process of the corrugated pipe.
2. The bus bar assembly unit according to claim 1, wherein the bellows is disposed adjacent to the respective fixed post insulator.
3. The bus bar assembly unit according to claim 2, wherein the bellows are provided at an end of the respective cylinder.
4. The bus bar assembly unit according to claim 1, 2 or 3, wherein a shield is provided on the elongated contacts.
5. The bus bar assembly unit according to claim 4, wherein the shield is provided with a guide ring on an inner side thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110043829.XA CN114765357B (en) | 2021-01-13 | 2021-01-13 | Bus combined unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110043829.XA CN114765357B (en) | 2021-01-13 | 2021-01-13 | Bus combined unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114765357A true CN114765357A (en) | 2022-07-19 |
| CN114765357B CN114765357B (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110043829.XA Active CN114765357B (en) | 2021-01-13 | 2021-01-13 | Bus combined unit |
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| CN (1) | CN114765357B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116231562A (en) * | 2023-03-13 | 2023-06-06 | 上海信南工业装备有限公司 | Busbar assembly and busbar connection structure |
| JP7444961B1 (en) | 2022-12-23 | 2024-03-06 | 東芝プラントシステム株式会社 | Expansion joint device and its expansion/contraction adjustment method |
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| CN111276346A (en) * | 2020-03-03 | 2020-06-12 | 天津嘉讯商贸有限公司 | Closed transmission line contact shield cover guide ring structure |
| CN212304644U (en) * | 2020-06-08 | 2021-01-05 | 新东北电气集团高压开关有限公司 | Three-phase common-box bus with temperature compensation |
| CN112202093A (en) * | 2020-08-14 | 2021-01-08 | 平高集团有限公司 | GIS (gas insulated switchgear) uninterrupted power expansion device and transformer substation |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0674013U (en) * | 1993-03-23 | 1994-10-18 | 日新電機株式会社 | Detachable busbar unit for gas insulated switchgear |
| JPH0974649A (en) * | 1995-09-08 | 1997-03-18 | Toshiba Corp | Gas insulated busbar |
| JP2005176536A (en) * | 2003-12-12 | 2005-06-30 | Japan Ae Power Systems Corp | Gas-insulated switching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7444961B1 (en) | 2022-12-23 | 2024-03-06 | 東芝プラントシステム株式会社 | Expansion joint device and its expansion/contraction adjustment method |
| JP2024090455A (en) * | 2022-12-23 | 2024-07-04 | 東芝プラントシステム株式会社 | Expansion joint device and expansion adjustment method thereof |
| CN116231562A (en) * | 2023-03-13 | 2023-06-06 | 上海信南工业装备有限公司 | Busbar assembly and busbar connection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114765357B (en) | 2024-05-17 |
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