CN113903576A - Leakage stoppage method for local leakage of large oil-immersed transformer body - Google Patents
Leakage stoppage method for local leakage of large oil-immersed transformer body Download PDFInfo
- Publication number
- CN113903576A CN113903576A CN202111012868.XA CN202111012868A CN113903576A CN 113903576 A CN113903576 A CN 113903576A CN 202111012868 A CN202111012868 A CN 202111012868A CN 113903576 A CN113903576 A CN 113903576A
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- China
- Prior art keywords
- rubber tube
- sealant
- leakage
- oil
- hose
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000000565 sealant Substances 0.000 claims abstract description 38
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 230000035515 penetration Effects 0.000 claims description 13
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 10
- 239000003921 oil Substances 0.000 description 19
- 230000000903 blocking effect Effects 0.000 description 8
- 239000003292 glue Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01F41/005—Impregnating or encapsulating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Housings And Mounting Of Transformers (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention provides a leakage stopping method for local leakage of a large oil-immersed transformer body, which comprises the steps of polishing a permeation area until the permeation area leaks out of the body, and cleaning the surface of the body in the permeation area by alcohol; smearing oil absorption powder on the cleaned surface of the transformer body, and determining a leakage point on the surface of the transformer body; the first end of the rubber tube is cut to be aligned to a leakage point after being flattened according to a preset angle, sealant is coated around the first end of the rubber tube, and the leakage point is drained through the rubber tube; after the sealant is completely solidified, folding the second end of the rubber tube in half and fastening and locking the second end of the rubber tube by using a lock catch; and (4) using the sealant to fully cover the rubber tube and adhering the rubber tube with the cured sealant at the first end of the rubber tube. The method stores the transformer oil in the plugging process by using the rubber tube, can prevent the transformer oil from being mixed into the sealant, and can more effectively plug the leakage point under the condition that the transformer is not powered off and the leakage point does not have welding plugging.
Description
Technical Field
The invention relates to the technical field of transformer maintenance, in particular to a leakage stopping method for local leakage of a large oil-immersed transformer body.
Background
At present, a large oil-immersed transformer body is easy to cause local oil leakage of the body due to manufacturing process, welding quality, welding stress or other reasons, leakage positions are mainly concentrated at welding seams of plates of the body, welding seams of connecting bolts of the body or welding positions of a radiator, and under the condition of no power failure, the traditional processing method is as follows: if the position of the leakage point can be in live-line operation, the leakage point is welded and blocked under live-line and pressure, the blocking effect of the method is good, but the risk is also great; if the live-line work cannot be carried out, the surface of the leakage point is polished and then directly coated and blocked by using liquid glue, at the moment, if the leakage point is large or the oil pressure at the position is large, the coated liquid glue is mixed with leakage transformer oil and the like in the curing process, the blocking effect is not good, and oil still leaks from part of the leakage point after the liquid glue is used for blocking and curing. Therefore, a scheme is needed to be provided for more effectively blocking the leakage point under the condition that the transformer is not powered off and the leakage point is not provided with welding blocking.
Disclosure of Invention
The invention aims to provide a leakage stopping method for local leakage of a large oil-immersed transformer body, which is used for realizing the technical effect of more effectively stopping leakage points under the condition that the transformer is not powered off and the leakage points do not have welding stopping.
The invention provides a leakage stopping method for local leakage of a large oil-immersed transformer body, which comprises the following steps:
polishing the penetration area until the penetration area leaks out of the body, and cleaning the surface of the body in the penetration area with alcohol;
smearing oil absorption powder on the cleaned surface of the transformer body, and determining a leakage point on the surface of the transformer body;
after the first end of the rubber tube is inclined to the section of the pipeline according to a preset angle and is cut off smoothly, aligning to a leakage point, coating sealant around the first end of the rubber tube, and conducting drainage on the leakage point through the rubber tube;
after the sealant is completely solidified, folding the second end of the rubber tube in half and fastening and locking the second end of the rubber tube by using a lock catch;
and (4) using the sealant to fully cover the rubber tube and adhering the rubber tube with the cured sealant at the first end of the rubber tube.
Furthermore, the hose is a hose with the length of 3-5cm and the diameter of 4 mm.
Further, the rubber tube is a polytetrafluoroethylene rubber tube.
Further, the sealant is a liquid metal sealant.
Further, the oil absorption powder material is any one of lime powder, starch and oil absorption resin.
Further, the lock catch is made of polytetrafluoroethylene.
Further, the transformer oil should be prevented from being mixed into the sealant in the process of coating the sealant on the first end of the rubber tube.
Furthermore, the rubber tube and the lock catch are prevented from being damaged in the process of using the sealant to comprehensively cover the rubber tube.
The beneficial effects that the invention can realize are as follows: the leakage stopping method provided by the invention stores the transformer oil in the plugging process by using the rubber tube, can prevent the transformer oil from being mixed into the sealant, and can more effectively block the leakage point under the condition that the transformer is not powered off and the leakage point does not have welding plugging.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flow chart of a method for stopping leakage of local leakage of a large-scale oil-immersed transformer body according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for stopping leakage of local leakage of a large oil-immersed transformer body according to an embodiment of the present invention.
The applicant researches and discovers that the current transformer leakage stopping methods mainly comprise two methods: 1) the leakage point can be live-line operated, and then the leakage point is welded and blocked under live-line and pressure, so that the method has a good blocking effect, but has a great risk; 2) the position of the leakage point can not be subjected to live-line operation, the leakage point is directly coated and blocked by using liquid glue after the surface of the leakage point is polished, at the moment, if the leakage point is larger or the oil pressure of the position is larger, the coated liquid glue is mixed with leakage transformer oil and other reasons in the curing process, the blocking effect is not good, and oil still leaks from part of the leakage point after the liquid glue is used for blocking and curing. Therefore, the embodiment of the invention provides a method for plugging local leakage of a large-scale oil-immersed transformer body, so that the leakage point can be effectively plugged under the condition that the transformer is not powered off and the leakage point does not have a welding plugging condition. The specific contents thereof are as follows.
S1, polishing the penetration area until the penetration area leaks out of the body, and cleaning the surface of the body in the penetration area with alcohol.
In one embodiment, the infiltration area may be polished using a polishing wheel, or may be polished using polishing sandpaper if the operating space is small. After polishing to leaking the body, the polishing area can be cleaned up by alcohol.
S2, smearing oil absorption powder on the cleaned surface of the device body, and determining a leakage point on the surface of the device body.
In one embodiment, after the penetration area is cleaned, the surface of the body can be wiped dry, then oil absorption powder is coated on the surface of the body, and the place which is wet at first is searched, so that the leakage point of the surface of the body is determined.
Illustratively, the oil absorption powder is any one of lime powder, starch and oil absorption resin, and the specific use can be selected according to actual conditions.
And S3, inclining the first end of the rubber pipe to the cross section of the pipeline according to a preset angle, flatly cutting the cross section of the pipeline, aligning the first end of the rubber pipe to a leakage point, smearing sealant around the first end of the rubber pipe, and conducting drainage on the leakage point through the rubber pipe.
In one embodiment, the first end of the hose may be tilted at an angle of 15 ° to the cross-section of the pipeline and cut flat, and then aligned with the leak point, and sealant may be applied around the first end of the hose to direct the flow through the hose to the leak point.
Illustratively, the first end of the rubber pipe can be inclined to the section of the pipeline by 15 degrees by using a tool knife or scissors for flattening and cutting; the hose is 3-5cm long and 4mm in diameter; meanwhile, the rubber tube can be a polytetrafluoroethylene rubber tube.
The length, diameter, and cut angle of the hose may be adjusted adaptively according to the size, length, and the like of the leakage point, and are not limited to the values in the above embodiment.
S4, after the sealant is completely solidified, folding the second end of the rubber tube in half and fastening and locking the second end of the rubber tube by using a lock catch.
In one embodiment, after the sealant is solidified, the second end of the rubber tube can be folded in half, and then the folded part is fastened and locked by using the lock catch; wherein the latch may also be made of teflon. The lock catch can be made into a ring shape, and the ring-shaped lock catch is tightly sleeved on the folded part of the rubber tube, so that the rubber tube is locked, and the transformer oil is prevented from flowing out.
S5, the rubber tube is covered completely by the sealant and is adhered to the cured sealant at the first end of the rubber tube.
In one embodiment, after the second end of the rubber tube is fastened and locked, the rubber tube can be further covered completely by using the sealant and adhered to the cured sealant at the first end of the rubber tube, the rubber tube is completely sealed by using the sealant, and after the sealant is solidified, leakage stoppage of a leakage point can be realized.
In summary, the embodiment of the present invention provides a method for stopping leakage of a local leakage of a large-scale oil-immersed transformer body, including polishing a penetration region until the penetration region leaks out of the body, and cleaning the surface of the body in the penetration region with alcohol; smearing oil absorption powder on the cleaned surface of the transformer body, and determining a leakage point on the surface of the transformer body; cutting the first end of the rubber tube to be flat and then vertically aligned with the leakage point, coating sealant around the first end of the rubber tube, and conducting drainage on the leakage point through the rubber tube; after the sealant is completely solidified, folding the second end of the rubber tube in half and fastening and locking the second end of the rubber tube by using a lock catch; and (4) using the sealant to fully cover the rubber tube and adhering the rubber tube with the cured sealant at the first end of the rubber tube.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A leakage stoppage method for local leakage of a large oil-immersed transformer body is characterized by comprising the following steps:
polishing the penetration area until the penetration area leaks out of the body, and cleaning the surface of the body in the penetration area with alcohol;
smearing oil absorption powder on the cleaned surface of the transformer body, and determining a leakage point on the surface of the transformer body;
after the first end of the rubber tube is inclined to the section of the pipeline according to a preset angle and is cut off smoothly, aligning to a leakage point, coating sealant around the first end of the rubber tube, and conducting drainage on the leakage point through the rubber tube;
after the sealant is completely solidified, folding the second end of the rubber tube in half and fastening and locking the second end of the rubber tube by using a lock catch;
and (4) using the sealant to fully cover the rubber tube and adhering the rubber tube with the cured sealant at the first end of the rubber tube.
2. The method of claim 1, wherein the hose is a hose having a length of 3-5cm and a diameter of 4 mm.
3. The method of claim 2, wherein the hose is a polytetrafluoroethylene hose.
4. The method of claim 1 wherein said sealant is a liquid metal sealant.
5. The method of claim 1, wherein the oil-absorbing powder is any one of lime powder, starch and oil-absorbing resin.
6. The method of claim 1, wherein the latch is made of polytetrafluoroethylene.
7. The method of claim 1 wherein the step of applying the sealant to the first end of the hose avoids mixing transformer oil into the sealant.
8. The method of claim 1, wherein the step of applying the sealant to the hose over the entire surface of the hose avoids damaging the hose and the latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012868.XA CN113903576A (en) | 2021-08-31 | 2021-08-31 | Leakage stoppage method for local leakage of large oil-immersed transformer body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012868.XA CN113903576A (en) | 2021-08-31 | 2021-08-31 | Leakage stoppage method for local leakage of large oil-immersed transformer body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113903576A true CN113903576A (en) | 2022-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111012868.XA Pending CN113903576A (en) | 2021-08-31 | 2021-08-31 | Leakage stoppage method for local leakage of large oil-immersed transformer body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113903576A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300101A (en) * | 2016-08-31 | 2017-01-04 | 合肥航太电物理技术有限公司 | A kind of online rapid plugging method for fiberglass of oil-filled transformer |
| CN110748743A (en) * | 2018-07-23 | 2020-02-04 | 国网辽宁省电力有限公司营口供电公司 | Oil leakage plugging tool for plate-type butterfly valve of power transformer |
| CN111521328A (en) * | 2020-05-30 | 2020-08-11 | 华能澜沧江水电股份有限公司 | Method for detecting leakage fault of hydraulic system of speed regulator of generator set |
| CN112013198A (en) * | 2020-08-27 | 2020-12-01 | 国网冀北电力有限公司检修分公司 | Oil pressure treatment device and method for oil seepage zone of transformer substation oil filling equipment |
| CN112038956A (en) * | 2020-09-02 | 2020-12-04 | 宁夏宁创新材料科技有限公司 | External oil leakage blocking method for transformer valve side conducting rod |
| CN112621105A (en) * | 2021-01-13 | 2021-04-09 | 国网冀北电力有限公司唐山供电公司 | Method for treating oil leakage of oil-immersed transformer of transformer substation |
-
2021
- 2021-08-31 CN CN202111012868.XA patent/CN113903576A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300101A (en) * | 2016-08-31 | 2017-01-04 | 合肥航太电物理技术有限公司 | A kind of online rapid plugging method for fiberglass of oil-filled transformer |
| CN110748743A (en) * | 2018-07-23 | 2020-02-04 | 国网辽宁省电力有限公司营口供电公司 | Oil leakage plugging tool for plate-type butterfly valve of power transformer |
| CN111521328A (en) * | 2020-05-30 | 2020-08-11 | 华能澜沧江水电股份有限公司 | Method for detecting leakage fault of hydraulic system of speed regulator of generator set |
| CN112013198A (en) * | 2020-08-27 | 2020-12-01 | 国网冀北电力有限公司检修分公司 | Oil pressure treatment device and method for oil seepage zone of transformer substation oil filling equipment |
| CN112038956A (en) * | 2020-09-02 | 2020-12-04 | 宁夏宁创新材料科技有限公司 | External oil leakage blocking method for transformer valve side conducting rod |
| CN112621105A (en) * | 2021-01-13 | 2021-04-09 | 国网冀北电力有限公司唐山供电公司 | Method for treating oil leakage of oil-immersed transformer of transformer substation |
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