CN102684088A - Method for dismounting transformer - Google Patents
Method for dismounting transformer Download PDFInfo
- Publication number
- CN102684088A CN102684088A CN2012101824071A CN201210182407A CN102684088A CN 102684088 A CN102684088 A CN 102684088A CN 2012101824071 A CN2012101824071 A CN 2012101824071A CN 201210182407 A CN201210182407 A CN 201210182407A CN 102684088 A CN102684088 A CN 102684088A
- Authority
- CN
- China
- Prior art keywords
- main transformer
- new main
- radiator
- old master
- novel main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a method for dismounting a transformer and belongs to the technical field of large power transformers. The method for dismounting the transformer specifically comprises the steps: performing oil drainage of an old main transformer; dismounting three side leads, all of accessories and secondary lines; checking a gas relay and an instrument of a novel main transformer; disassembling an old main transformer body and installing a novel main transformer body; installing a novel main transformer radiator, an oil return pipeline and a rubber mat; performing nitrogen explosion of the novel main transformer body; installing a novel main transformer captive test (CT) ascending base, a fan and a thermometer; installing a novel main transformer oil conservator; installing a novel main transformer on-load voltage regulation switch; performing oil return of the novel main transformer body, manufacturing the three side leads and connecting the secondary lines; installing a gas relay of the novel main transformer, performing oil filling of the novel main transformer oil conservator and adjusting oil level; performing oil filling of the on-load voltage regulation switch; checking up the connecting condition of the secondary lines and performing a transmission test; performing cleaning and paint spraying; and connecting the three side leads of the novel main transformer to finish installation of the novel main transformer. By means of the method, working steps of some complicated processes can be omitted, the working time can be saved, and the work efficiency can be improved.
Description
Technical field
The present invention relates to a kind of transformer assembly and disassembly methods, be applicable to the dismounting of large-scale power transformer.
Background technology
How the installation of large-scale power transformer has that workload is big, the activity duration is long, it is wide to relate to specialty, have cargo handling operation simultaneously again and combine closely, influence construction factor characteristics such as.Radiator quantity at least 20 groups of every transformer, volume is big, quantity is many, in the main transformer overhaul engineering, radiator remove and install be one loaded down with trivial details and last long work.Usually the demounting procedure of radiator is following: 1, body is removed: with single suspender belt radiator is vertically lifted by crane, move apart the main transformer body; 2, tilt to fall: radiator is moved to stack near the place, help down, tilt to fall on the ground the staff; 3, change rope: after radiator was set level on the ground, single suspender belt was used two suspender belts instead and is put down and hang; 4, flatly hang stacking:, then radiator is carried out neat stacking with two parallel radiators of slinging of suspender belt.The method for dismounting of this radiator is more loaded down with trivial details, and consuming time longer.
In addition, the old master becomes the leave from office entrucking, and the new main transformer installation in position of appearing on the stage is the critical workflow in the main transformer turnover job; Directly influence the overall progress of overhaul, at present, main transformer is rotated when leaving office in the overhaul, uses a transport vehicle usually; At first to the old master be become leave from office and move to idle place, newer main transformer appeared on the stage, again the old master become at last and entruck and carry away; Sleeper is put work and will be carried out 4 times at least, limited by on-the-spot place, when translation distance increases; Also will increase sleeper and put number of times, job step increases to 8 even more, and whole work needs 3 days ability to accomplish at least.
In addition; 3 lifting methods are adopted in the installation of CT rising seat usually, and promptly two suspender belts cooperate an adjusting rope of regulating rising seat inclined degree to lift or dismantle as head-rope; The not of uniform size of seat owing to raise; The gradient of installing has nothing in common with each other again, does not have fixing gradient during lifting, regulates the length of rope and all need confirm according to on-site actual situations at every turn.Adjusting rope in the past is the big rope of nylon: rely in the past experience and sensation, the length of regulating rope is carried out preliminary judgement, colligation, examination is hung then, judges through range estimation whether the seat gradient that raises is consistent with main transformer body gradient behind the built on stilts.When difference was big, the seat that needs to raise put down, and increases or shorten the colligation length of regulating rope again.And the increase and decrease amount of this adjusting receives the effects limit such as stroke of colligation gimmick and nylon rope self, is difficult to control just rightly.Install when raising seat, rising seat of every lifting often need repeatedly be regulated, try to hang.Sometimes hung main transformer top, because the seat that raises is bigger with body gradient gap, the seat that needs will raise again hangs go back to the original place and regulates.And every the seat that raises high, medium voltage side all need so carry out re-adjustments, could accomplish lifting work, and this adjustment process is repeatedly lost time, inefficiency.
Summary of the invention
The technical problem that the present invention will solve provides a kind of transformer assembly and disassembly methods of saving the operating time, increasing work efficiency.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is: a kind of transformer assembly and disassembly methods, and its key step is following:
(1) old master becomes and to drain the oil, remove the old master uprise, in, the lead-in wire of low pressure three sides, remove the secondary line that the old master becomes;
(2) radiator of dismounting old master change, CT rising seat, sleeve pipe, conservator, blower fan, oil pump annex;
(3) Buchholz relay and the instrument of new main transformer are carried out verification;
(4) the dismounting old master becomes body, and new main transformer body is installed;
(5) new main transformer radiator and oil return line pipeline, rubber cushion are installed;
(6) the broken nitrogen of new main transformer body, the new main transformer body interior of hand inspection situation;
(7) new main transformer CT rising seat, blower fan and thermometer are installed;
(8) new main transformer conservator is installed;
(9) new main transformer on-load voltage regulating switch is installed, new main transformer body is vacuumized together with on-load voltage regulating switch;
(10) new main transformer high, medium and low voltage three sides lead-in wire is made in new main transformer body oil return, connects all secondary lines of new main transformer;
(11) Buchholz relay of the new main transformer of installation, new main transformer conservator oiling, adjustment oil level;
(12) on-load voltage regulating switch oiling is carried out leakage test to above-mentioned new main transformer integral body, leaves standstill then;
(13) staff checks that all secondary lines of new main transformer connect situation, carry out transmission test to new main transformer; Then new main transformer is cleaned, sprays paint;
(14) lead-in wire of new main transformer high, medium and low voltage three sides is connect draw, accomplish the installation of new main transformer.
The concrete job step that the middle dismounting of above-mentioned steps (2) old master becomes radiator is following:
A, will be connected with radiator top through suspender belt as the crane hook of load-bearing hook, will be as the crane of auxiliary hook little hook pass through suspender belt and be connected with the radiator bottom;
B, radiator is vertically sling, moved apart the main transformer body through the crane hook;
C, the adjusting through little hook of crane and crane hook make radiator realization level aloft, directly radiator neatly are deposited on the ground then.
The dismounting old master becomes body in the above-mentioned steps (4), and the concrete job step that new main transformer body is installed is following:
A, be ready to an old master and become transport vehicle and a new main transformer transport vehicle;
B, become body and old master the old master and become between the transport vehicle and lay railway sleepers, then the old master is become body and leave office, install to the old master and become on the transport vehicle, transport;
C, new main transformer body is contained on the new main transformer transport vehicle, is transported to the position that new main transformer is installed, utilize the sleeper that lays in the steps A to install new main transformer body.
The concrete steps that new main transformer CT rising seat is installed in the above-mentioned steps (7) are following:
A, the CT seat upper flange dish that raises is connected with suspension hook through two suspender belts, the tie point of said two suspender belts and a CT rising upper flange dish is two end points of said upper flange dish diameter;
B, one section steel wire rope cooperated with flower basket bolt form to regulate rope, an end of said adjusting rope is connected with suspension hook, its other end is connected with a CT rising upper flange dish, and tie point is the arcuate midway point between two suspender belts and the upper flange dish tie point;
C, adjust the length of above-mentioned adjusting rope, and then the raise gradient of seat lower flange dish of adjustment CT, make the CT gradient of seat lower flange dish that raises consistent with the ring flange gradient of new main transformer through regulating flower basket bolt;
D, keep the raise gradient of seat lower flange dish of CT, the pulling suspension hook is the CT relevant position that seat lifts by crane new main transformer that raises, and the CT seat lower flange dish that raises is connected with the ring flange of new main transformer, accomplishes the installation that CT raises.
The installation method of above-mentioned radiator is consistent with method for dismounting, reversed in order.
The method for dismounting and the installation method of above-mentioned CT rising seat are similar.
Beneficial effect of the present invention is following:
(1) through improving the assembly and disassembly methods of radiator, reduces the dismounting step, shortened the dismounting time of radiator greatly;
(2) through improving the method that the dismounting old master becomes body, new main transformer body is installed, practice thrift job step, saved the operating time;
(3) through improving the installation method of CT rising seat, can adjust the gradient of CT rising seat ring flange fast and accurately, save the operating time, increase work efficiency.
Embodiment
Embodiment, transformer assembly and disassembly methods of the present invention, concrete steps are following:
(1) old master becomes and to drain the oil, remove the old master uprise, in, the lead-in wire of low pressure three sides, remove the secondary line that the old master becomes;
(2) annexes such as the radiator of dismounting old master change, CT rising seat, sleeve pipe, conservator, blower fan, oil pump;
The radiator that above-mentioned dismounting old master becomes, concrete steps are following:
A, will be connected with radiator top through suspender belt as the crane hook of load-bearing hook, will be as the crane of auxiliary hook little hook pass through suspender belt and be connected with the radiator bottom;
B, radiator is vertically sling, moved apart the main transformer body through the crane hook;
C, the adjusting through little hook of crane and crane hook make radiator realization level aloft, directly radiator neatly are deposited on the ground then.
(3) Buchholz relay and the instrument of new main transformer are carried out verification;
(4) the dismounting old master becomes body, and new main transformer body is installed, and concrete job step is following:
A, be ready to an old master and become transport vehicle and a new main transformer transport vehicle;
B, become body and old master the old master and become between the transport vehicle and lay railway sleepers, then the old master is become body and leave office, install to the old master and become on the transport vehicle, transport;
C, new main transformer body is contained on the new main transformer transport vehicle, is transported to the position that new main transformer is installed, utilize the sleeper that lays in the steps A to install new main transformer body.
(5) new main transformer radiator and oil return line pipeline, rubber cushion are installed;
(6) the broken nitrogen of new main transformer body, the new main transformer body interior of hand inspection situation;
(7) new main transformer CT rising seat, blower fan and thermometer are installed, the concrete job step that new main transformer CT rising seat wherein is installed is following:
A, the CT seat upper flange dish that raises is connected with suspension hook through two suspender belts, the tie point of said two suspender belts and a CT rising upper flange dish is two end points of said upper flange dish diameter;
B, one section steel wire rope cooperated with flower basket bolt form to regulate rope, an end of said adjusting rope is connected with suspension hook, its other end is connected with a CT rising upper flange dish, and tie point is the arcuate midway point between two suspender belts and the upper flange dish tie point;
C, adjust the length of above-mentioned adjusting rope, and then the raise gradient of seat lower flange dish of adjustment CT, make the CT gradient of seat lower flange dish that raises consistent with the ring flange gradient of new main transformer through regulating flower basket bolt;
D, keep the raise gradient of seat lower flange dish of CT, the pulling suspension hook is the CT relevant position that seat lifts by crane new main transformer that raises, and the CT seat lower flange dish that raises is connected with the ring flange of new main transformer, accomplishes the installation that CT raises.
(8) new main transformer conservator is installed;
(9) new main transformer on-load voltage regulating switch is installed, new main transformer body is vacuumized together with on-load voltage regulating switch;
(10) new main transformer high, medium and low voltage three sides lead-in wire is made in new main transformer body oil return, connects all secondary lines of new main transformer;
(11) Buchholz relay of the new main transformer of installation, new main transformer conservator oiling, adjustment oil level;
(12) on-load voltage regulating switch oiling is carried out leakage test to above-mentioned new main transformer integral body, leaves standstill then;
(13) staff checks that all secondary lines of new main transformer connect situation, carry out transmission test to new main transformer; Then new main transformer is cleaned, sprays paint;
(14) lead-in wire of new main transformer high, medium and low voltage three sides is connect draw, accomplish the installation of new main transformer.
The installation method of above-mentioned radiator is consistent with method for dismounting, reversed in order.
The method for dismounting and the installation method of above-mentioned CT rising seat are similar.
The present invention has reduced the dismounting step through improving the assembly and disassembly methods of radiator, has shortened the dismounting time of radiator greatly; Through improving the method that the dismounting old master becomes body, new main transformer body is installed, practiced thrift job step, saved the operating time; Through improving the installation method of CT rising seat, can adjust the gradient of CT rising seat ring flange fast and accurately, save the operating time, increase work efficiency.
Claims (4)
1. a transformer assembly and disassembly methods is characterized in that, its method step is following:
(1) old master becomes and to drain the oil, remove the old master uprise, in, the lead-in wire of low pressure three sides, remove the secondary line that the old master becomes;
(2) radiator of dismounting old master change, CT rising seat, sleeve pipe, conservator, blower fan, oil pump annex;
(3) Buchholz relay and the instrument of new main transformer are carried out verification;
(4) the dismounting old master becomes body, and new main transformer body is installed;
(5) new main transformer radiator and oil return line pipeline, rubber cushion are installed;
(6) the broken nitrogen of new main transformer body, the new main transformer body interior of hand inspection situation;
(7) new main transformer CT rising seat, blower fan and thermometer are installed;
(8) new main transformer conservator is installed;
(9) new main transformer on-load voltage regulating switch is installed, new main transformer body is vacuumized together with on-load voltage regulating switch;
(10) new main transformer high, medium and low voltage three sides lead-in wire is made in new main transformer body oil return, connects all secondary lines of new main transformer;
(11) Buchholz relay of the new main transformer of installation, new main transformer conservator oiling, adjustment oil level;
(12) on-load voltage regulating switch oiling is carried out leakage test to above-mentioned new main transformer integral body, leaves standstill then;
(13) staff checks that all secondary lines of new main transformer connect situation, carry out transmission test to new main transformer; Then new main transformer is cleaned, sprays paint;
(14) lead-in wire of new main transformer high, medium and low voltage three sides is connect draw, accomplish the installation of new main transformer.
2. transformer assembly and disassembly methods according to claim 1 is characterized in that, the concrete job step that the middle dismounting of step (2) old master becomes radiator is following:
A, will be connected with radiator top through suspender belt as the crane hook of load-bearing hook, will be as the crane of auxiliary hook little hook pass through suspender belt and be connected with the radiator bottom;
B, radiator is vertically sling, moved apart the main transformer body through the crane hook;
C, the adjusting through little hook of crane and crane hook make radiator realization level aloft, directly radiator neatly are deposited on the ground then.
3. transformer assembly and disassembly methods according to claim 1 is characterized in that, the dismounting old master becomes body in the step (4), and the concrete job step that new main transformer body is installed is following:
A, be ready to an old master and become transport vehicle and a new main transformer transport vehicle;
B, become body and old master the old master and become between the transport vehicle and lay railway sleepers, then the old master is become body and leave office, install to the old master and become on the transport vehicle, transport;
C, new main transformer body is contained on the new main transformer transport vehicle, is transported to the position that new main transformer is installed, utilize the sleeper that lays in the steps A to install new main transformer body.
4. transformer assembly and disassembly methods according to claim 1 is characterized in that, the concrete steps that new main transformer CT rising seat is installed in the step (7) are following:
A, the CT seat upper flange dish that raises is connected with suspension hook through two suspender belts, the tie point of said two suspender belts and a CT rising upper flange dish is two end points of said upper flange dish diameter;
B, one section steel wire rope cooperated with flower basket bolt form to regulate rope, an end of said adjusting rope is connected with suspension hook, its other end is connected with a CT rising upper flange dish, and tie point is the arcuate midway point between two suspender belts and the upper flange dish tie point;
C, adjust the length of above-mentioned adjusting rope, and then the raise gradient of seat lower flange dish of adjustment CT, make the CT gradient of seat lower flange dish that raises consistent with the ring flange gradient of new main transformer through regulating flower basket bolt;
D, keep the raise gradient of seat lower flange dish of CT, the pulling suspension hook is the CT relevant position that seat lifts by crane new main transformer that raises, and the CT seat lower flange dish that raises is connected with the ring flange of new main transformer, accomplishes the installation that CT raises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182407.1A CN102684088B (en) | 2012-06-05 | 2012-06-05 | Transformer assembly and disassembly methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182407.1A CN102684088B (en) | 2012-06-05 | 2012-06-05 | Transformer assembly and disassembly methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102684088A true CN102684088A (en) | 2012-09-19 |
| CN102684088B CN102684088B (en) | 2016-02-24 |
Family
ID=46815640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210182407.1A Active CN102684088B (en) | 2012-06-05 | 2012-06-05 | Transformer assembly and disassembly methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102684088B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009403A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Overhauling method special for outdoor large transformer |
| CN108110757A (en) * | 2018-01-24 | 2018-06-01 | 武汉大学 | Replace method of supplying power in the substation line interval of 110kV/3100A mobile high-voltage combined electrical apparatus vehicles |
| CN108183417A (en) * | 2018-01-24 | 2018-06-19 | 武汉大学 | A kind of substation based on 110kV/40MVA phase shifting transformer vehicles replaces method of supplying power to |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060035704A (en) * | 2006-04-06 | 2006-04-26 | 이명근 | The length adjustable wire sling |
| CN101546889A (en) * | 2009-05-11 | 2009-09-30 | 河南省电力公司南阳供电公司 | Method for replacing main transformer of power system |
| CN102110520A (en) * | 2010-12-30 | 2011-06-29 | 陕西化建工程有限责任公司 | Construction process for installing and debugging large transformer |
-
2012
- 2012-06-05 CN CN201210182407.1A patent/CN102684088B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060035704A (en) * | 2006-04-06 | 2006-04-26 | 이명근 | The length adjustable wire sling |
| CN101546889A (en) * | 2009-05-11 | 2009-09-30 | 河南省电力公司南阳供电公司 | Method for replacing main transformer of power system |
| CN102110520A (en) * | 2010-12-30 | 2011-06-29 | 陕西化建工程有限责任公司 | Construction process for installing and debugging large transformer |
Non-Patent Citations (6)
| Title |
|---|
| 刘光源: "《电工实用手册》", 31 January 2012, 中国电力出版社 * |
| 张建坤等: "特高压变压器现场安装关键技术及应用", 《电网技术》 * |
| 柳涌: "《建筑电气设备施工技术手册》", 31 December 2010, 中国建筑工业出版社 * |
| 薛洛良等: "停电16小时更换110KV变压器", 《电工技术》 * |
| 陈勇等: "110KV主变大修工程施工方案分析", 《中国电力教育》 * |
| 马智等: "丰镇电厂500kV主变压器拆卸方案", 《内蒙古科技与经济》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009403A (en) * | 2014-05-21 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Overhauling method special for outdoor large transformer |
| CN104009403B (en) * | 2014-05-21 | 2015-12-02 | 国网四川省电力公司成都市新都供电分公司 | Be exclusively used in the repair method to outdoor large transformer |
| CN108110757A (en) * | 2018-01-24 | 2018-06-01 | 武汉大学 | Replace method of supplying power in the substation line interval of 110kV/3100A mobile high-voltage combined electrical apparatus vehicles |
| CN108183417A (en) * | 2018-01-24 | 2018-06-19 | 武汉大学 | A kind of substation based on 110kV/40MVA phase shifting transformer vehicles replaces method of supplying power to |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102684088B (en) | 2016-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104480930B (en) | A kind of filling pile cage of reinforcement hangs fixing construction method | |
| CN102684088A (en) | Method for dismounting transformer | |
| CN106006425A (en) | Method of hoisting and transporting large-sized equipment arranged in underground machine rooms of super high-rise buildings | |
| CN109055637B (en) | Hydraulic lifting process for mounting furnace shell in blast furnace overhaul | |
| CN101417774A (en) | Mobile assembling gantry crane | |
| CN106315407A (en) | Method for sliding dismounting of ultra-large type crane beam in narrow space | |
| CN103803397B (en) | A kind of suspender for installed vertical rolling mill universal axle and using method | |
| US10632578B2 (en) | Assembly method for DC converter valve | |
| CN203755568U (en) | Combined height-adjustable support for overlength roof slab construction | |
| CN204609267U (en) | A kind of suspension bracket for tank inside construction | |
| CN201817243U (en) | Platform and device for replacing conductor rail | |
| CN202481941U (en) | Balancing device for overhanging steam-turbine bearing bush | |
| CN104727549B (en) | Confined space liftable integral installation form removal system construction installation method | |
| CN102785067B (en) | Device and method for assembling and disassembling heavy hydraulic cylinder fast | |
| CN105098632A (en) | Method for repairing core of rack transformer | |
| CN204023826U (en) | Magnetic crane lifting rubber earthquake isolation support | |
| CN202766210U (en) | Cable cover plate lifting device | |
| CN102674139B (en) | Hoisting tool of wind screen of cooling tower and detaching and installing method of wind screen of cooling tower | |
| CN104882267A (en) | Method for adding angle ring to transformer coil assembly | |
| CN207209840U (en) | A kind of Multifunctional suspension bracket | |
| CN104627877A (en) | Installation method and conveying device for high-voltage ceramic wall bushing | |
| CN101982390B (en) | Hoisting method of outer cover of main transformer | |
| CN203269334U (en) | Sling for lifting steel grating of trash rack slot of hydropower station | |
| CN220055999U (en) | Device for hoisting lower-layer high-voltage sleeve without dismantling upper-layer sleeve | |
| CN102838061A (en) | Hydraulic loading, unloading and moving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: XINGTAI POWER SUPPLY COMPANY Effective date: 20120913 Owner name: HEBEI ELECTRIC POWER CORPORATION XINGTAI POWER SUP Effective date: 20120913 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 054001 XINGTAI, HEBEI PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20120913 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: Hebei Electric Power Corporation Applicant after: Xingtai Power Supply Co. Address before: 054001, No. 318 East Street, Xinxing Road, Hebei, Xingtai Applicant before: Xingtai Power Supply Co. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |