CN203895812U - Integrated apparatus of oil drain nitrogen filling, vacuum-pumping nitrogen filling and vacuum-pumping of main transformer - Google Patents
Integrated apparatus of oil drain nitrogen filling, vacuum-pumping nitrogen filling and vacuum-pumping of main transformer Download PDFInfo
- Publication number
- CN203895812U CN203895812U CN201420244018.1U CN201420244018U CN203895812U CN 203895812 U CN203895812 U CN 203895812U CN 201420244018 U CN201420244018 U CN 201420244018U CN 203895812 U CN203895812 U CN 203895812U
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- CN
- China
- Prior art keywords
- vacuum
- main transformer
- nitrogen
- pipeline
- pumping
- 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.)
- Expired - Lifetime
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 39
- 238000005086 pumping Methods 0.000 title abstract description 5
- 238000000605 extraction Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 11
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Transformer Cooling (AREA)
Abstract
The utility model discloses an integrated apparatus of oil drain nitrogen filling, vacuum-pumping nitrogen filling and vacuum-pumping of a main transformer. The integrated apparatus comprises a vacuum pump (9) and a nitrogen cylinder (7) connected with a main body (5) of the main transformer. The nitrogen cylinder (7) is connected with a pipeline of the main body (5) of the main transformer. A voltage-reducing valve (8), a No. 4 vacuum valve (4) and a No.2 vacuum valve (2) are arranged in turn from an outlet of the nitrogen cylinder. Two pipelines are connected in series on the pipeline between the No. 4 vacuum valve (4) and the No.2 vacuum valve (2). One pipeline is connected with a No.1 vacuum valve (1) and then connected with the vacuum pump (9), and the other pipeline is connected with a No.3 vacuum valve (3) and then connected with a vacuum compression gauge (6). According to the integrated apparatus provided by the utility model, integration of three works in the overhaul of the main transformer can be realized, intermediate links are reduced and time of an iron core and a coil contacting with air is shortened as possible.
Description
Technical field
The utility model relates to overhaul device, relates in particular to main transformer oil extraction inflated with nitrogen, vacuum nitrogen filling gas, vacuumizes three work integrated apparatus.
Background technology
Oil-filled transformer turnover job comprises necessary overhaul oil extraction inflated with nitrogen, vacuum nitrogen filling gas, vacuum pumping.Traditional mode of operation is separately independently operations of three work, and the operating time is long, and if these three work disposal improper, main transformer coil, iron core very easily make moist, this is also worry in turnover job.So everybody moves heaven and earth in overhaul work, how to prevent that main transformer coil and iron core from making moist.But not yet find that there is the report of the correlation means better addressing the above problem at present.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of main transformer oil extraction inflated with nitrogen, vacuum nitrogen filling gas, vacuumizes three work integrated apparatus, realize three work in overhaul by this device integrated, cut down the number of intermediate links, master iron core, coil ingress of air time are shortened as far as possible.
The utility model solves the problems of the technologies described above with following technical scheme:
The utility model main transformer oil extraction inflated with nitrogen, vacuum nitrogen filling gas, vacuumize integrated apparatus, comprise the vacuum pump 9 and the nitrogen cylinder 7 that are connected to main transformer body 5 through pipeline, described nitrogen cylinder 7 connects on the pipeline of main transformer body 5 from nitrogen cylinder outlet installs pressure-reducing valve 8, No. four vacuum valves 4 and No. two vacuum valves 2 successively, between No. four vacuum valves 4 and No. two vacuum valves 2, on pipeline, be connected in series two-way pipeline, after one road pipeline connects a vacuum valve 1, connect vacuum pump 9, after another road pipeline connects No. three vacuum valves 3, connect pressure vacuum gauge 6.
The utility model device has following beneficial effect:
1. the overhaul of conventional processes is from oil extraction to recovering bell jar, also different to iron core, the aerial time requirement of coil exposed according to the difference of relative air humidity, is approximately about tens hours.And tens tons of oily oil extraction times of main transformer approximately need about 5 hours, this oil extraction within several hours, be in the morning, humidity maximum, the air-isolation if do not tried every possible means (containing certain moisture content in air), retain oily can row of vacuum, the words iron core of blowing air oil extraction, coil make moist.By using the utility model device, oil extraction is on one side on one side to inflated with nitrogen (not water content) in main transformer body, make in these hours of main transformer oil extraction, iron core and coil keep and air insulated, the time that minimizing main transformer coil, iron core contact with airborne moisture content, avoid the insulation such as master iron core, coil to reduce, guarantee every insulation data qualifier after overhaul.
2. affected by air humidity larger in overhaul work, insulation level after the effect decision overhaul vacuumizing, qualified in order to ensure overhaul insulation, utilize the utility model device, after being evacuated down to certain vacuum values, be filled with pure nitrogen, iron core and coil are dried, then continue to vacuumize inflated with nitrogen again, the number of times of vacuum nitrogen filling gas is determined according to overhaul relative air humidity on the same day, thereby it is qualified to guarantee to insulate after overhaul.
3. to vacuumize be necessary process to overhaul, utilizes the utility model device, can use vacuum pump separately main transformer body to be vacuumized, and guarantees that main transformer vacuum degree reaches code requirement, thereby guarantee overhaul quality.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model device.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
As shown in Figure 1, the utility model main transformer oil extraction inflated with nitrogen, vacuum nitrogen filling gas, vacuumize three work integrated apparatus, comprise the vacuum pump 9 and the nitrogen cylinder 7 that are connected to main transformer body 5 through pipeline, nitrogen cylinder 7 connects on the pipeline of main transformer body 5 from nitrogen cylinder outlet installs pressure-reducing valve 8, No. four vacuum valves 4 and No. two vacuum valves 2 successively, between No. four vacuum valves 4 and No. two vacuum valves 2, on pipeline, be connected in series two-way pipeline, after one road pipeline connects a vacuum valve 1, connect vacuum pump 9, after another road pipeline connects No. three vacuum valves 3, connect pressure vacuum gauge 6.
Utilize the carry out large repairs method of operation of three work of the utility model device as follows:
One, the operation of main transformer oil extraction process inflated with nitrogen:
A, open No. two vacuum valves 2 and No. four vacuum valves 4, close a vacuum valve 1 and No. three vacuum valves 3;
Body intake valve is not opened in B, main transformer body 5 oil extractions, and the nitrogen of nitrogen cylinder 7 is filled with nitrogen by pressure-reducing valve 8 to main transformer body.
Two, vacuumize---inflated with nitrogen---vacuumizing---inflated with nitrogen---vacuumizes until the qualified operation of vacuum degree:
A, open vacuum valve 1, No. two vacuum valves 2, No. three vacuum valves 3, starting vacuum pump 9 vacuumizes main transformer body 5, in the time that reaching 700pa, vacuum degree (shows by pressure vacuum gauge 6), close vacuum valve 1 No. one, stop vacuum pump 9, open vacuum valve 4 No. four, be filled with nitrogen until 1 atmospheric pressure (with atmosphere concora crush) by pressure-reducing valve 8 to main transformer body 5.
B, the operation of repetition A item, determine to repeat depending on air humidity situation the number of times that A item operates.
C, continue to vacuumize until or lower than 133pa, pressurize 8 hours, continues to vacuumize oiling and expired master iron core, stops oiling and vacuumizes work.
Three, the operation vacuumizing separately:
Open vacuum valve 1, No. two vacuum valves 2, No. three vacuum valves 3, start vacuum pump 9 and vacuumize, until or lower than 133pa (or required value), complete the work of vacuumizing.
Claims (1)
1. main transformer oil extraction inflated with nitrogen, vacuum nitrogen filling gas, vacuumize integrated apparatus, comprise the vacuum pump (9) and the nitrogen cylinder (7) that are connected to main transformer body (5) through pipeline, it is characterized in that, on the pipeline of described nitrogen cylinder (7) connection main transformer body (5), from nitrogen cylinder outlet, pressure-reducing valve (8) is installed successively, No. four vacuum valves (4) and No. two vacuum valves (2), between No. four vacuum valves (4) and No. two vacuum valves (2), on pipeline, be connected in series two-way pipeline, after connecting a vacuum valve (1), one road pipeline connects vacuum pump (9), after connecting No. three vacuum valves (3), another road pipeline connects pressure vacuum gauge (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244018.1U CN203895812U (en) | 2014-05-14 | 2014-05-14 | Integrated apparatus of oil drain nitrogen filling, vacuum-pumping nitrogen filling and vacuum-pumping of main transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244018.1U CN203895812U (en) | 2014-05-14 | 2014-05-14 | Integrated apparatus of oil drain nitrogen filling, vacuum-pumping nitrogen filling and vacuum-pumping of main transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203895812U true CN203895812U (en) | 2014-10-22 |
Family
ID=51722168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420244018.1U Expired - Lifetime CN203895812U (en) | 2014-05-14 | 2014-05-14 | Integrated apparatus of oil drain nitrogen filling, vacuum-pumping nitrogen filling and vacuum-pumping of main transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203895812U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024338A (en) * | 2019-11-27 | 2020-04-17 | 山西平阳重工机械有限责任公司 | Miniature nitrogen-filled airtight vacuum control device |
| CN112837914A (en) * | 2020-12-31 | 2021-05-25 | 国网湖南省电力有限公司 | Device and method for on-site oil and gas supplement of high-voltage bushing of transformer |
-
2014
- 2014-05-14 CN CN201420244018.1U patent/CN203895812U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024338A (en) * | 2019-11-27 | 2020-04-17 | 山西平阳重工机械有限责任公司 | Miniature nitrogen-filled airtight vacuum control device |
| CN112837914A (en) * | 2020-12-31 | 2021-05-25 | 国网湖南省电力有限公司 | Device and method for on-site oil and gas supplement of high-voltage bushing of transformer |
| CN112837914B (en) * | 2020-12-31 | 2022-06-21 | 国网湖南省电力有限公司 | Device and method for on-site oil and gas supplement of high-voltage bushing of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |