CN113284716B - Connecting structure of enclosed bus and transformer and sleeve disassembling method - Google Patents
Connecting structure of enclosed bus and transformer and sleeve disassembling method Download PDFInfo
- Publication number
- CN113284716B CN113284716B CN202010105409.5A CN202010105409A CN113284716B CN 113284716 B CN113284716 B CN 113284716B CN 202010105409 A CN202010105409 A CN 202010105409A CN 113284716 B CN113284716 B CN 113284716B
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- Prior art keywords
- bus
- conductor
- shell
- transformer
- sleeve
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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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
Abstract
The invention provides a connecting structure of a closed bus and a transformer and a sleeve dismounting method. The sleeve disassembling method comprises the following steps: 1) disassembling the rubber corrugated pipe; 2) removing the connecting bolt of the flexible connecting conductor and the bus conductor; 3) dismantling the connecting bolt of the transformer flange and the bus flange; 4) disassembling the shell of the L-section bus; 5) disassembling the connecting bolt of the transition busbar and the sleeve; 6) the cannula is removed. According to the invention, the transformer bushing can be conveniently detached only by adding one transition bus bar, the length of the rubber corrugated pipe can be reduced, and the stability of the closed bus bar structure is good.
Description
Technical Field
The invention relates to the field of power generation, in particular to a connection structure of a closed bus and a transformer and a sleeve dismounting method.
Background
In large power plants, the current between the generator outlet and the main transformer is very high, and a closed bus connection is usually adopted. Transformers are typically placed in separate transformer rooms where conditions warrant due to fire and heat dissipation requirements, and are separated from other rooms by firewalls, as shown in fig. 1. When the transformer bushing is overhauled, the rubber corrugated pipe is removed, then the flexible connection conductor is removed, and then the low-voltage bushing is pulled out for overhauling. However, this removal method has the prerequisite that the length L1 of the rubber bellows is greater than the length L2 below the flange surface of the low-pressure sleeve, so that the low-pressure sleeve can be removed. The length of the rubber corrugated pipe is not suitable to be too long, and is usually less than 350mm, otherwise the structural stability of the bus is influenced, and the part below the flange surface of the sleeve is usually designed according to the size. However, in high altitude areas or other occasions with high requirements on insulation level, the insulation level of the sleeve is high, the length of the part below the flange surface of the sleeve is larger than that of the corrugated pipe and can reach 500mm, and under the condition, the sleeve can be taken out only by pulling out the main transformer after the rubber corrugated pipe and the flexible connecting conductor are removed, so that the method obviously increases the workload and wastes time and labor, and therefore, a reasonable and feasible connection structure of the closed bus and the transformer is researched, and the method has practical value.
Disclosure of Invention
The invention aims to provide a connecting structure of a closed bus and a transformer, which is convenient for disassembling a low-voltage sleeve. The invention adopts the following technical scheme.
A connection structure of a closed bus and a transformer is characterized by comprising a sleeve, a bus flange, an L-shaped bus shell, a transition bus, a flexible connection conductor, a rubber corrugated pipe, a bus conductor and a straight-line bus shell;
the lower end of the vertical section of the L-shaped bus shell is provided with a bus flange, and the bus flange is connected with a transformer flange by adopting a connecting bolt; the sleeve and the transition busbar are positioned in a vertical section shell of the L-shaped bus shell, the transition busbar is positioned above the sleeve, and the lower ends of the sleeve and the transition busbar are connected by adopting a connecting bolt; the flexible connection conductor is positioned in a transverse section shell of the L-shaped bus shell, and the upper end of the transition bus bar is connected with the flexible connection conductor; the other end of the flexible connecting conductor is connected with the bus conductor through a connecting bolt; the transverse section of the L-shaped bus shell is connected with one end of the rubber corrugated pipe; the other end of the rubber corrugated pipe is connected with the straightway bus shell, and the connection point of the flexible connection conductor and the bus conductor is within the range of the rubber corrugated pipe.
Furthermore, the bus bar support structure further comprises a support insulator, wherein one end of the support insulator is fixed on the straight-line bus bar shell, and the other end of the support insulator supports the bus bar conductor.
Furthermore, the rubber corrugated pipe is connected with the transverse section of the L-shaped bus shell and the straight-line bus shell respectively by stainless steel bolts.
Further, the length of the transverse section of the L-shaped bus bar shell is shorter than that of the vertical section.
Another object of the present invention is to provide a method for detaching a bushing of a connection structure of a closed bus and a transformer, which can facilitate detachment of the bushing of the transformer. The connection structure of the closed bus and the transformer adopts the connection structure of the closed bus and the transformer, and the sleeve dismounting method comprises the following steps:
1) disassembling the rubber corrugated pipe;
2) removing the connecting bolt of the flexible connecting conductor and the bus conductor;
3) dismantling the connecting bolt of the transformer flange and the bus flange;
4) disassembling the shell of the L-section bus;
5) disassembling the connecting bolt of the transition busbar and the sleeve;
6) the cannula is removed.
According to the invention, the transformer bushing can be conveniently detached only by adding one transition bus bar, the length of the rubber corrugated pipe can be reduced, and the stability of the closed bus bar structure is good.
Drawings
Fig. 1 is a schematic diagram of a transformer mounting structure according to the background art.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the connection structure of the enclosed bus and the transformer provided by the invention comprises a sleeve 1, a bus flange 2, an L-shaped bus shell 3, a transition bus 4, a flexible connection conductor 5, a rubber corrugated pipe 6, a post insulator 7, a bus conductor 8, a straight-line bus shell 9 and a connection bolt.
The lower end of the vertical section of the L-shaped bus shell 3 is provided with a bus flange 2, and the bus flange 2 is connected with a transformer flange 101 through a connecting bolt; the sleeve 1 and the transition busbar 4 are positioned in a vertical section shell of the L-shaped bus shell 3, the transition busbar 4 is positioned above the sleeve 1, and the lower ends of the sleeve 1 and the transition busbar 4 are connected by adopting a connecting bolt; the flexible connection conductor 5 is positioned in a transverse section shell of the L-shaped bus shell 3, and the upper end of the transition bus bar 4 is connected with the flexible connection conductor 5; the other end of the flexible connecting conductor 5 is connected with a bus conductor 8 through a connecting bolt; the transverse section of the L-shaped bus shell 3 is connected with one end of a rubber corrugated pipe 6; the other end of the rubber corrugated pipe 6 is connected with a straight-line bus shell 9; one end of the post insulator 7 is fixed on the straight-line bus casing 9, and the other end supports the bus conductor 8. The rubber corrugated pipe 6 can be connected with the horizontal section of the L-shaped bus shell 3 and the straight-line bus shell 9 respectively by stainless steel bolts.
Wherein, the length of the horizontal section of the L-shaped bus bar shell 3 is shorter than that of the vertical section.
The connection point of the flexible connection conductor 5 and the bus conductor 8 is in the range of the rubber corrugated pipe, so that the L-shaped bus shell 3 can be directly drawn out upwards after the rubber corrugated pipe is disassembled, the flexible connection conductor and bus conductor connecting bolt is disassembled, and the transformer flange and bus flange connecting bolt is disassembled.
By adopting the structure of the invention, the specific disassembly step of the sleeve is as follows;
1) disassembling the rubber corrugated pipe 6;
2) removing the connecting bolt of the flexible connecting conductor 5 and the bus conductor 8;
3) dismantling the connecting bolt of the transformer flange 101 and the bus flange 2;
4) disassembling the L-shaped bus bar housing 3;
5) disassembling the connecting bolt of the transition busbar 4 and the sleeve 1;
6) the cannula is removed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent variations and modifications made by the present invention are covered by the scope of the claims of the present invention, which is not limited by the examples herein.
Claims (4)
1. A connection structure of a closed bus and a transformer is characterized by comprising a sleeve, a bus flange, an L-shaped bus shell, a transition bus, a flexible connection conductor, a rubber corrugated pipe, a bus conductor and a straight-line bus shell;
the lower end of the vertical section of the L-shaped bus shell is provided with a bus flange, and the bus flange is connected with a transformer flange by adopting a connecting bolt; the sleeve and the transition busbar are positioned in a vertical section shell of the L-shaped bus shell, the transition busbar is positioned above the sleeve, and the lower ends of the sleeve and the transition busbar are connected by adopting a connecting bolt; the flexible connection conductor is positioned in a transverse section shell of the L-shaped bus shell, and the upper end of the transition bus bar is connected with the flexible connection conductor; the other end of the flexible connecting conductor is connected with the bus conductor through a connecting bolt; the transverse section of the L-shaped bus shell is connected with one end of the rubber corrugated pipe; the other end of the rubber corrugated pipe is connected with the straightway bus shell, and the connection point of the flexible connection conductor and the bus conductor is within the range of the rubber corrugated pipe.
2. The enclosed busbar and transformer connection of claim 1, further comprising a post insulator, one end of said post insulator being secured to said straightaway busbar housing and the other end of said post insulator supporting said busbar conductor.
3. The structure of claim 1, wherein the rubber bellows is connected to the horizontal section of the L-shaped bus bar housing and the straight section bus bar housing by stainless steel bolts.
4. A bushing dismounting method of a connection structure of a closed bus bar and a transformer, characterized in that the connection structure of the closed bus bar and the transformer of claim 1 is adopted, the bushing dismounting method comprises the following steps:
1) disassembling the rubber corrugated pipe;
2) removing the connecting bolt of the flexible connecting conductor and the bus conductor;
3) dismantling the connecting bolt of the transformer flange and the bus flange;
4) disassembling the shell of the L-section bus;
5) disassembling the connecting bolt of the transition busbar and the sleeve;
6) the cannula is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105409.5A CN113284716B (en) | 2020-02-20 | 2020-02-20 | Connecting structure of enclosed bus and transformer and sleeve disassembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105409.5A CN113284716B (en) | 2020-02-20 | 2020-02-20 | Connecting structure of enclosed bus and transformer and sleeve disassembling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113284716A CN113284716A (en) | 2021-08-20 |
| CN113284716B true CN113284716B (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010105409.5A Active CN113284716B (en) | 2020-02-20 | 2020-02-20 | Connecting structure of enclosed bus and transformer and sleeve disassembling method |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01114320A (en) * | 1987-10-26 | 1989-05-08 | Toshiba Corp | Phase-separated bus connection device |
| CN201708450U (en) * | 2010-06-13 | 2011-01-12 | 河南平高东芝高压开关有限公司 | Direct-connecting structure for total box GIS (Geographic Information System) bus and junction box feeder transformer |
| CN203339607U (en) * | 2013-07-05 | 2013-12-11 | 辽宁北辰电力设备有限公司 | Closed bus and transformer wiring terminal connection wire outlet box |
| CN203607730U (en) * | 2013-11-27 | 2014-05-21 | 天威云南变压器股份有限公司 | Box-type transformer |
| CN104638596A (en) * | 2013-11-12 | 2015-05-20 | 辽宁北辰电力设备有限公司 | Closed bus and transformer wiring terminal connecting wire outgoing box structure |
| CN104795779A (en) * | 2015-04-21 | 2015-07-22 | 阜新市新能封闭母线研究所 | Clock type sealed insulating device capable of preventing water accumulation |
| CN204497695U (en) * | 2015-04-21 | 2015-07-22 | 阜新市新能封闭母线研究所 | Anti-ponding type clock-type sealed insulation device |
| CN105281240A (en) * | 2015-10-23 | 2016-01-27 | 北海银河开关设备有限公司 | Outdoor compact type intelligent substation |
| CN205016346U (en) * | 2015-10-10 | 2016-02-03 | 中国电建集团成都勘测设计研究院有限公司 | Heavy current is from looks enclosed bus and main transformer connection structure |
| CN107293987A (en) * | 2017-05-23 | 2017-10-24 | 河南平高电气股份有限公司 | A kind of GIS device and transformer direct connection device and the transformer station using the device |
| CN108806957A (en) * | 2018-05-28 | 2018-11-13 | 保定天威保变电气股份有限公司 | A kind of novel extra-high voltage water cooling combined transformer and its transport assemble method |
| CN212257135U (en) * | 2020-02-20 | 2020-12-29 | 中国电建集团华东勘测设计研究院有限公司 | Connection structure of enclosed bus and transformer |
-
2020
- 2020-02-20 CN CN202010105409.5A patent/CN113284716B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01114320A (en) * | 1987-10-26 | 1989-05-08 | Toshiba Corp | Phase-separated bus connection device |
| CN201708450U (en) * | 2010-06-13 | 2011-01-12 | 河南平高东芝高压开关有限公司 | Direct-connecting structure for total box GIS (Geographic Information System) bus and junction box feeder transformer |
| CN203339607U (en) * | 2013-07-05 | 2013-12-11 | 辽宁北辰电力设备有限公司 | Closed bus and transformer wiring terminal connection wire outlet box |
| CN104638596A (en) * | 2013-11-12 | 2015-05-20 | 辽宁北辰电力设备有限公司 | Closed bus and transformer wiring terminal connecting wire outgoing box structure |
| CN203607730U (en) * | 2013-11-27 | 2014-05-21 | 天威云南变压器股份有限公司 | Box-type transformer |
| CN104795779A (en) * | 2015-04-21 | 2015-07-22 | 阜新市新能封闭母线研究所 | Clock type sealed insulating device capable of preventing water accumulation |
| CN204497695U (en) * | 2015-04-21 | 2015-07-22 | 阜新市新能封闭母线研究所 | Anti-ponding type clock-type sealed insulation device |
| CN205016346U (en) * | 2015-10-10 | 2016-02-03 | 中国电建集团成都勘测设计研究院有限公司 | Heavy current is from looks enclosed bus and main transformer connection structure |
| CN105281240A (en) * | 2015-10-23 | 2016-01-27 | 北海银河开关设备有限公司 | Outdoor compact type intelligent substation |
| CN107293987A (en) * | 2017-05-23 | 2017-10-24 | 河南平高电气股份有限公司 | A kind of GIS device and transformer direct connection device and the transformer station using the device |
| CN108806957A (en) * | 2018-05-28 | 2018-11-13 | 保定天威保变电气股份有限公司 | A kind of novel extra-high voltage water cooling combined transformer and its transport assemble method |
| CN212257135U (en) * | 2020-02-20 | 2020-12-29 | 中国电建集团华东勘测设计研究院有限公司 | Connection structure of enclosed bus and transformer |
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| Publication number | Publication date |
|---|---|
| CN113284716A (en) | 2021-08-20 |
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