CN114765357B - Bus combined unit - Google Patents
Bus combined unit Download PDFInfo
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- CN114765357B CN114765357B CN202110043829.XA CN202110043829A CN114765357B CN 114765357 B CN114765357 B CN 114765357B CN 202110043829 A CN202110043829 A CN 202110043829A CN 114765357 B CN114765357 B CN 114765357B
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- China
- Prior art keywords
- cylinder body
- contact
- cylinder
- conductive
- extension contact
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Classifications
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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
The invention relates to a bus bar combination unit. A busbar assembly unit comprising: the first bus unit comprises a first cylinder body and a first conducting rod, and the first conducting rod is fixedly supported in the first cylinder body through a fixed post insulator; the second bus unit comprises a second cylinder body and a second conducting rod, and the second conducting rod is fixedly supported in the second cylinder body through a fixed post insulator; the two conductive rods are fixedly connected with opposite ends of the first cylinder body and the second cylinder body, one of the two conductive rods is provided with an extension contact, the other one of the two conductive rods is provided with an extension contact seat, the extension contact and the extension contact seat are in guiding insertion fit along the axial direction of the corresponding conductive rod, and the insertion fit length of the extension contact and the extension contact seat is longer than the length of the conductive rod protruding out of the cylinder body of the fault bus unit; the first cylinder and/or the second cylinder are/is provided with a corrugated pipe, and the lengthened contact seat are always in conductive connection in the telescopic process of the corrugated pipe.
Description
Technical Field
The invention relates to a bus bar combination unit.
Background
The GIL is a high-voltage, high-current and long-distance power transmission device, is a preferred scheme of outgoing lines of large-scale underground power stations, and is also a preferred scheme for solving the problem of shortage of power transmission corridors in large cities, so that the GIL is gradually replacing overhead lines and cables. With the large-scale application of GIL, the operation and maintenance of GIL are indispensable, while GIL lines are generally longer, and if faults occur in operation, part of units need to be disassembled for maintenance.
The Chinese patent application with the application publication number of CN104538916A discloses a rigid gas insulation power transmission line, when the power transmission line is used for disassembling a fault bus unit, the first basic bus unit and the second basic bus unit are firstly disassembled from the detachable bus unit, and the detachable bus unit is disassembled, so that the GIL line is disassembled, and then the disassembly of the fault bus unit is realized. The disassembly mode is complex, labor intensity is high, and working efficiency is affected.
Disclosure of Invention
The invention aims to provide a bus combined unit so as to solve the technical problem that a power transmission line in the prior art is complicated to detach when a fault bus unit is detached.
In order to achieve the above purpose, the technical scheme of the bus combined unit of the invention is as follows:
A busbar assembly unit comprising:
the first bus unit comprises a first cylinder body and a first conducting rod, and the first conducting rod is fixedly supported in the first cylinder body through a fixed post insulator;
the second bus unit comprises a second cylinder body and a second conducting rod, and the second conducting rod is fixedly supported in the second cylinder body through a fixed post insulator;
The two conductive rods are fixedly connected with opposite ends of the first cylinder body and the second cylinder body, one of the two conductive rods is provided with an extension contact, the other one of the two conductive rods is provided with an extension contact seat, the extension contact and the extension contact seat are in guiding insertion fit along the axial direction of the corresponding conductive rod, and the insertion fit length of the extension contact and the extension contact seat is longer than the length of the conductive rod protruding out of the cylinder body of the fault bus unit;
the first cylinder and/or the second cylinder are/is provided with a corrugated pipe, and the lengthened contact seat are always in conductive connection in the telescopic process of the corrugated pipe.
The beneficial effects are that: during normal operation, the corrugated pipe plays a role in normal temperature compensation, and at the moment, the plug-in 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, the fault bus unit and the flange connection of the bus unit connected with the fault bus unit are removed firstly, then corrugated pipes of the two bus combination units are compressed, the lengthened contact and the lengthened contact seat absorb displacement difference generated by compression of the corrugated pipes to be fully inserted and matched, meanwhile, disassembly spaces are formed in two axial sides of the fault bus unit, so that the fault bus unit meets disassembly conditions, and then the fault bus unit is disassembled. The busbar combination unit has the advantages of simple structure, less sealing surface, axial compensation function and disassembly function, reduces the whole SF6 gas leakage amount of the GIL engineering, is suitable for the long-distance GIL engineering, simplifies the disassembly step, reduces the labor intensity and improves the working efficiency.
Further, the bellows are disposed adjacent to the respective stationary post insulators.
The beneficial effects are that: in this way, the fixed post insulator can be used as a supporting point so as to adjust the expansion and contraction of the corrugated pipe through the adjusting nut.
Further, the bellows are arranged at the end parts of the corresponding cylinders.
The beneficial effects are that: thus, the sealing surface can be reduced, and the gas leakage amount of the whole GIL is reduced.
Further, 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.
Further, a guide ring is arranged on the inner side of the shielding cover.
The beneficial effects are that: the guide ring is convenient for guiding the lengthened contact seat to enter between the shielding cover and the lengthened contact, so that mutual friction is avoided.
Drawings
FIG. 1 is a schematic view of the structure of a bus bar assembly according to embodiment 1 of the present invention in normal operation;
FIG. 2 is a schematic view of the junction 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 view of the junction of the first cylinder and the second cylinder in FIG. 3;
FIG. 5 is a schematic view of the structure of the bus bar assembly unit of the present invention in normal operation of embodiment 2;
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 busbar unit; 11-a first cylinder; 12-a second cylinder; 13-bellows; 14-lengthening the touch seat; 15-lengthening the contact; 16-a third cylinder; 17-standard contact base; 18-standard contacts; 19-a fixed post insulator; 20-sliding post insulators; 21-a first conductive rod; 22-a second conductive rod; 23-a third conductive rod; 24-shielding case; 25-screws; 26-a guide ring; 27-adjusting a screw; 28-adjusting the nut; 29-spring fingers.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the 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 invention, as 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 made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as "first" and "second", and the like, are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a 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 merely for convenience of description of the invention, and do not denote that the device or component in question must have a particular orientation, and thus should not be construed as limiting the invention.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
Example 1 of the busbar assembly of the invention:
As shown in fig. 1 and 2, the GIL includes two busbar assembly units, and a standard busbar unit 103 is disposed between the two busbar assembly units, in this embodiment, the number of standard busbar units 103 is one, and in other embodiments, the number of standard busbar units may be set according to the number.
In this embodiment, the standard bus unit includes a third cylinder 16 and a third conductive rod 23, where the third conductive rod 23 is disposed in the third cylinder 16, specifically, a fixed pillar insulator 19 and a sliding pillar insulator 20 are disposed in the third cylinder, two sliding pillar insulators 20 are disposed in the third cylinder, and the third conductive rod 23 is fixedly supported in the third cylinder 16 by the fixed pillar insulator 19 and the two sliding pillar insulators 20. One end of the third conductive rod 23 is provided with a standard contact seat 17, and the other end of the third conductive rod 23 is provided with a standard contact 18. Wherein, standard contact seat 17 is in third barrel 16, and standard contact 18 protrusion third barrel 16 arranges.
In this embodiment, the busbar assembly unit includes a first busbar unit 101 and a second busbar unit 102 that are connected together, the first busbar 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 pillar insulator 19 and a sliding pillar insulator 20 are disposed in the first cylinder 11, two sliding pillar insulators 20 are disposed, and the first conductive rod 21 is fixedly supported in the first cylinder 11 through the fixed pillar insulator 19 and the two sliding pillar insulators 20. Wherein, 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 positioned 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, where the second conductive rod 22 is disposed in the second cylinder 12, specifically, a fixed pillar insulator 19 and a sliding pillar insulator 20 are disposed in the second cylinder 12, two sliding pillar insulators 20 are disposed, and the second conductive rod 22 is fixedly supported in the second cylinder 12 through the fixed pillar insulator 19 and the two sliding pillar insulators 20. Wherein, one end of the second conductive rod 22 is provided with an elongated contact 15, the other end of the second conductive rod 22 is provided with a standard contact seat 17, and the standard contact seat 17 is positioned in the second cylinder 12, and the elongated contact 15 protrudes out of the second cylinder 12.
As shown in fig. 2, opposite ends of the first cylinder 11 and the second cylinder 12 are fixedly connected through flanges, and an elongated contact seat 14 on the first conductive rod 21 is in guiding insertion fit with an elongated contact 15 on the second conductive rod 22. The spring contact finger 29 is disposed in the extension contact base 14 to ensure good electrical conductivity between the extension contact base 14 and the extension contact 15.
In this embodiment, the plugging fit length of the extension contact 15 and the extension contact seat 14 is greater than the length of the conductive rod protruding out of the cylinder of the fault bus unit, so that when the extension contact 15 and the extension contact seat 14 are completely plugged and matched, the end of the conductive rod of the fault bus unit can be separated, and the fault bus unit is disassembled for maintenance.
In this embodiment, the shield cover 24 is fixed on the extension contact 15 through the screw 25, and the shield cover 24 can uniformly lengthen the electric field at the connection position of the contact 15 and the extension contact seat 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 base 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 amount of the whole GIL is reduced. 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 in a threaded manner.
In this embodiment, the bellows 13 is disposed near 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.
As shown in fig. 1 and 2, the bellows 13 performs a function of normal temperature compensation in a normal working state of GIL, and at this time, the plug-in mating length of the lengthened contact 15 and the lengthened contact seat 14 is the same as the plug-in mating length of the standard contact 18 and the standard contact seat 17; when the standard bus unit 103 breaks down, the standard bus unit 103 and the flange connection of the bus unit connected with the standard bus unit are removed, then the corrugated pipes 13 of the two bus combination units are compressed, the lengthened contacts 15 and the lengthened contact bases 14 absorb displacement differences generated by compression of the corrugated pipes 13 to be fully 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, less sealing surface, axial compensation function and disassembly function, reduces the SF6 gas leakage amount of the whole GIL engineering, and is suitable for long-distance GIL engineering.
Example 2 of the busbar assembly of the present invention:
The present embodiment differs from embodiment 1 in that in embodiment 1, the faulty bus unit is a standard bus unit. In this embodiment, the fault bus bar unit is one of the bus bar combination units, and the second bus bar unit 102 is taken as an example, as shown in fig. 5, GIL includes three groups of bus bar combination units, and standard bus bar units 103 are disposed between two adjacent groups of bus bar combination units, when the second bus bar unit 102 in the bus bar combination unit in the middle position fails, by compressing the bellows 13 of the other two bus bar combination units, a disassembling space appears on two axial sides of the second bus bar unit 102, as shown in fig. 6, so that the second bus bar unit 102 meets the disassembling condition, and then the second bus bar unit 102 is disassembled. When the first busbar unit 101 is a faulty busbar unit, the disassembly method is the same as that of the second busbar unit 102 described above. The number of standard bus bar units between two adjacent bus bar combination units can be multiple.
Example 3 of the busbar assembly of the present invention:
The present embodiment differs 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 and second barrels.
Example 4 of the busbar assembly of the present invention:
This embodiment differs from embodiment 1 in that in embodiment 1 the bellows 13 is located close to the stationary post insulator 19 and at the end of the second cylinder 12. In this embodiment, the bellows is disposed between the fixed post insulator and the sliding post insulator based on the case where the bellows is close to the fixed post insulator.
Example 5 of the busbar assembly of the invention:
this embodiment differs from embodiment 1 in that in embodiment 1 the bellows 13 is located close to the stationary 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 the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. Busbar combination unit, its characterized in that includes:
the first bus unit comprises a first cylinder body and a first conducting rod, and the first conducting rod is fixedly supported in the first cylinder body through a fixed post insulator;
the second bus unit comprises a second cylinder body and a second conducting rod, and the second conducting rod is fixedly supported in the second cylinder body through a fixed post insulator;
The two conductive rods are fixedly connected with opposite ends of the first cylinder body and the second cylinder body, one of the two conductive rods is provided with an extension contact, the other one of the two conductive rods is provided with an extension contact seat, the extension contact and the extension contact seat are in guiding insertion fit along the axial direction of the corresponding conductive rod, and the insertion fit length of the extension contact and the extension contact seat is longer than the length of the conductive rod protruding out of the cylinder body of the fault bus unit;
The novel high-voltage power supply is characterized in that a corrugated pipe is arranged on the first cylinder body and/or the second cylinder body, a lengthened contact and a lengthened contact seat are always in conductive connection in the telescopic process of the corrugated pipe, a shielding cover is arranged on the lengthened contact, and the contact part of the lengthened contact and the lengthened contact seat is always covered inside by the shielding cover in the plug-in matching process.
2. The busbar assembly of claim 1, wherein the bellows are disposed proximate to respective stationary post insulators.
3. The busbar assembly of claim 2, wherein the bellows are disposed at an end of the respective barrel.
4. The busbar assembly of claim 1, wherein a guide ring is provided on an inner side of the shield.
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 CN114765357A (en) | 2022-07-19 |
| CN114765357B true 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) |
Families Citing this family (2)
| 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 |
| 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 |
Citations (10)
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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 |
| CN203589647U (en) * | 2013-09-24 | 2014-05-07 | 山东泰开高压开关有限公司 | Device capable of dismounting bus |
| CN205489204U (en) * | 2016-03-24 | 2016-08-17 | 河南森源电气股份有限公司 | GIS dismounting device and use device's generating line subassembly for generating line |
| CN206211279U (en) * | 2016-12-12 | 2017-05-31 | 江苏安靠智能输电工程科技股份有限公司 | A kind of rigid gas insulated power line build-out unit |
| CN110649547A (en) * | 2019-09-27 | 2020-01-03 | 平高集团有限公司 | A gas-insulated metal-enclosed transmission line and its axial expansion joint |
| 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 |
-
2021
- 2021-01-13 CN CN202110043829.XA patent/CN114765357B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN203589647U (en) * | 2013-09-24 | 2014-05-07 | 山东泰开高压开关有限公司 | Device capable of dismounting bus |
| CN205489204U (en) * | 2016-03-24 | 2016-08-17 | 河南森源电气股份有限公司 | GIS dismounting device and use device's generating line subassembly for generating line |
| CN206211279U (en) * | 2016-12-12 | 2017-05-31 | 江苏安靠智能输电工程科技股份有限公司 | A kind of rigid gas insulated power line build-out unit |
| CN110649547A (en) * | 2019-09-27 | 2020-01-03 | 平高集团有限公司 | A gas-insulated metal-enclosed transmission line and its axial expansion joint |
| 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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| Publication number | Publication date |
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| CN114765357A (en) | 2022-07-19 |
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