CN1562449A - Oil-gas separation equipment of hollow fiber in use for monitoring transformer online - Google Patents
Oil-gas separation equipment of hollow fiber in use for monitoring transformer online Download PDFInfo
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- CN1562449A CN1562449A CN 200410030892 CN200410030892A CN1562449A CN 1562449 A CN1562449 A CN 1562449A CN 200410030892 CN200410030892 CN 200410030892 CN 200410030892 A CN200410030892 A CN 200410030892A CN 1562449 A CN1562449 A CN 1562449A
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- 239000012510 hollow fiber Substances 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 title claims description 26
- 238000000926 separation method Methods 0.000 title description 14
- 239000000835 fiber Substances 0.000 claims abstract description 42
- 239000003129 oil well Substances 0.000 claims abstract description 16
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 9
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000004593 Epoxy Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 abstract 1
- 229920000647 polyepoxide Polymers 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 69
- 241000196324 Embryophyta Species 0.000 description 11
- 239000012528 membrane Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
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- 238000009792 diffusion process Methods 0.000 description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009183 running Effects 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 241000219146 Gossypium Species 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 230000015556 catabolic process Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
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- 150000002431 hydrogen Chemical class 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- -1 poly tetrafluoroethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Housings And Mounting Of Transformers (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
An oil-air separating hollow fibre equipment for the in-line monitor of transformer is composed of a hollow fiber module consisting of the casing with oil inlet and outlet and air inlet and outlet, the hollow fibre cluster featuring that the outside of hollow fibre is communicated with said oil outlet and inlet and its inside with the air inlet and outlet, epoxy resin sealed ends and supporting stainless steel posts, an oil pump with the entrance communicated to the outlet of transformer and the exit communicated to the oil inlet of hollow fibres, pipeline with air releasing valve, oil well, electromagnetic valve, vacuumizing pump, oil removing tube, and quantitative sample tube.
Description
Technical field
The invention belongs to the power equipment detection range, refer to a kind of tubular fibre gas and oil separating plant that is used for transformer online monitoring especially.
Background technology
The large-scale power transformer inspection and repair system that acts out one's plan at present, and scheduled overhaul unavoidably can exist maintenance superfluous or overhaul insufficient problem.The superfluous huge waste that causes manpower, financial resources, material resources of maintenance causes plant factor to reduce, and may cause damage to normal device; The not enough accident potential that may cause equipment of maintenance.Adopt on-line monitoring technique can effectively avoid these problems, and finally realize the repair based on condition of component of transformer.
Exist the power transformer of potential faults or fault, can produce H in its transformer oil
2(hydrogen), CO (carbon monoxide), CO
2(carbonic acid gas), CH
4(methane), C
2H
6(ethane), C
2H
2(acetylene), C
2H
4(ethene) several fault signature gases are differentiated transformer inside according to oil dissolved gas and whether are had the latent fault, also claim the oil chromatography analytical method, just begin to use in power system from the fifties, and its validity is generally proved.But the conventional chromatogram method often can not in time capture trouble signal.So the Gas in Oil of Transformer on-line monitoring is the technology of domestic positive popularization.
The Gas in Oil of Transformer on-line monitoring system generally is made up of gas-oil separation unit, gas detection cell, microcomputer data processing unit and communication unit.Wherein the gas-oil separation unit is responsible for dissolved gases in the oil is separated, and is the prerequisite that system detects and analyzes.
What present online gas-oil separation employing was more is the polymeric membrane of plate frame structure, and the mechanism of gas-oil separation is dissolving-diffusion process, and its advantage is simple in structure.And the material multiselect of film is with the tetrafluoroethylene of title that " plastics king " arranged, because its stable chemical performance, oil resistant, high temperature resistant, good mechanical property, permeability are also good.
Pertinent literature is:
[1] Jia Ruijun, the application of macromolecule membrane in transformer oil dissolved gas on-line monitoring, transformer, 2001,38 (10): 37-40.[2] Jia Ruijun, the development of dissolving hydrogen on-line monitoring instrument in the transformer oil, electric power network technique, 1998,22 (1): 4-7
The scheme that these two pieces of articles are introduced adopts the sheet frame film, and hydrogen is very fast by the seepage velocity of film, and starting time has only 15 hours.
For improving the real-time of failure testing, the gas and oil equilibration time makes every effort to short more good more.Reflection according to the power consumer that uses this series products, the seepage velocity of hydrogen is apparently higher than other several gases, just can realize balance at one day with interior, but all the starting time of fault signature gas is generally more than a week, so Chang starting time has proposed very high requirement to the stopping property of air chamber, if the long term seal of air chamber is good inadequately, concentration will change in the air chamber, and finally the measuring result to total system causes very big influence.And because the starting time of separatory membrane is long, very big to the starting time difference of various fault signature gas, C for example
2H
6Starting time than H
2And CH
4Big several days, the measuring result of rear end is difficult to obtain in the oil gas concentration instantaneous value accurately according to Henry'S coefficient like this, and its observed value can not be followed the tracks of the variation of reality when gas concentration in the oil changes.
The Gas in Oil of Transformer of Canada morganschaffer company is collected device GP100.It directly is contained in the transformer oil drain valve, and there are the many polymer kapillaries that curve U-shaped inside, and end is connected to a collection chamber, gets gas with syringe, and gas circuit and oil circuit do not circulate.The function of GP100 is a collection at hydrogen, and existing at home many families use, and the starting time of hydrogen is about one day.
Except that polymeric membrane, the people is arranged with bubbling, dynamically method such as head space is applied to the on-line monitoring gas-oil separation, its subject matter is: 1. complex structure, easy break-down.2. in degasification process, oil directly contacts with gas, and the pollution that transformer oil can be subjected to air jeopardizes insulation; If the oil after will outgasing abandons, both consumed transformer oil, increase the maintenance workload of Monitoring systems again, and be difficult to still guarantee that transformer oil is isolated fully with air in Monitoring systems, finally bring hidden danger to system safety operation; 3. repeated bad.This creator actively makes great efforts research, through research and development with great concentration, invents out the present invention of true tool practical effect and industrial utilization finally.
Summary of the invention
The purpose of this invention is to provide a kind ofly can realize several fault signature gas oil gas equilibrated at short notice, be fit to rig-site utilization, the tubular fibre gas and oil separating plant that is used for transformer online monitoring of contaminated oil not.
For achieving the above object, the present invention takes following design: a kind of tubular fibre gas and oil separating plant that is used for transformer online monitoring, and it is characterized in that: it comprises:
One hollow-fiber module comprises: shell; Hollow fiber bundle, the two ends of hollow fiber bundle seal with the Resins, epoxy end socket, and the centre adds the stainless steel pillar stiffener, uses the resistance oil silicone rubber seal with O ring between Resins, epoxy end socket and the shell; Side wall of outer shell is provided with an oil-in and an oil outlet, and the shell two ends are provided with an inlet mouth, an air outlet; The outside of intrafascicular each tubular fibre of tubular fibre communicates with oil outlet and oil-in, and the inside of intrafascicular each tubular fibre of tubular fibre is connected with inlet mouth and air outlet by its openings at two ends;
One oil pump, its import is connected with the transformer outlet by pipeline, and its outlet is connected with the oil-in of hollow-fiber module by pipeline;
Oil outlet on the hollow-fiber module shell is connected with the transformer import by pipeline, and pipeline is provided with purging valve;
Oil well, magnetic valve, the vacuum pump that is connected in series successively by pipeline, pipe and sampling quantity tube deoil, oil well is tubbiness, the oil well sidewall is provided with the liquid level switch of control magnetic valve, and the inlet mouth on the shell is connected with the sampling quantity tube, and the air outlet on the shell is connected with the import of oil well.
Hollow fiber bundle is made up of 50-1000 root tubular fibre, and tubular fibre is made by unformed tetrafluoroethylene or polyvinylidene difluoride (PVDF).
Vacuum pump is the miniature diaphragm pump.
Oil pump is the miniature gears pump.
Liquid level switch is the photoelectric liquid-levle switch.
Advantage of the present invention is: 1, the present invention is used for the tubular fibre gas and oil separating plant of transformer online monitoring, because it adopts following means, shortened the starting time of gas-oil separation significantly: 1) the gas-oil separation film has used tubular fibre, has improved oil and film contact area.2) tubular fibre adopts unformed tetrafluoroethylene of high gas permeable material or polyvinylidene difluoride (PVDF) to make, and improves the rate of permeation H of film.3) in working order, gas constantly circulates with the gas of sampling quantity tube in the hollow fiber bundle, has reduced gas initial concentration C in the air chamber
04) in working order, the oil in the hollow-fiber module shell and the oil of transformer body constantly circulate, and have increased gas concentration C ' in the oil.
2, the present invention is used for the tubular fibre gas and oil separating plant of transformer online monitoring, and at work, transformer oil is in closed state all the time, does not directly contact with air, can guarantee that oil is not polluted in the gas-oil separation process.
3, the present invention is used for the tubular fibre gas and oil separating plant of transformer online monitoring, and relatively simple for structure, the mechanical part of device is few, can realize computer controlled automatic, can be used in on-line monitoring.This method can realize the balance of all fault signature gases through rig-site utilization in one hour, with respect to the oil and gas separation method of plate and frame film, speed is greatly improved.To important and transformer that the latent defective is arranged, can realize " urgent nurse " like this, promptly can carry out one-time detection, detect the development trend of fault in real time every one hour.
Description of drawings
Fig. 1 represents the whole schematic diagram of the present invention
Fig. 2 represents the hollow-fiber module structure iron among the present invention
Embodiment
As shown in Figure 1 and Figure 2, a kind of tubular fibre gas and oil separating plant that is used for transformer online monitoring of the present invention, it is characterized in that: it comprises:
One hollow-fiber module 4 comprises: shell 15; Hollow fiber bundle 16, the two ends of hollow fiber bundle 16 seal with Resins, epoxy end socket 13, and the centre adds stainless steel pillar stiffener 14, seals with resistance oil silicone rubber O shape circle 12 between Resins, epoxy end socket 13 and the shell 15; Shell 15 sidewalls are provided with an oil-in 20 and an oil outlet 17, and shell 15 two ends are provided with an inlet mouth 18, an air outlet 11; The outside of each tubular fibre communicates with oil outlet 17 and oil-in 20 in the hollow fiber bundle 16, and the inside of each tubular fibre is connected with inlet mouth 18 and air outlet 11 by its openings at two ends in the hollow fiber bundle 16;
One oil pump 3, its import is connected with transformer 1 outlet by pipeline, and its outlet is connected with the oil-in 20 of hollow-fiber module 4 by pipeline;
Oil well 5, magnetic valve 6, the vacuum pump 7 that is connected in series successively by pipeline, pipe 8 and sampling quantity tube 9 deoil, oil well 5 is tubbiness, oil well 5 sidewalls are provided with the liquid level switch 10 (pilot circuit employing custom circuit) of control magnetic valve 6, inlet mouth 18 on the shell 15 is connected with sampling quantity tube 9, and the air outlet 11 on the shell 15 is connected with the import of oil well 5.Gas in the sampling quantity tube 9 can detect by proofing unit.The pipe 8 interior filling glass cottons that deoil may be infiltrated the oil vapour of gas circuit with elimination.Wherein oil well 5 and magnetic valve 6, when the tubular fibre accidental damage, oil at first penetrates in the oil well 5, and when liquid level switch 10 detected oil impregnate in the oil well 5, magnetic valve 6 cut out, and the detection system of back can not be damaged because of oil-feed.
The gas-permeable mechanism of film is dissolving-diffusion process, follows following relational expression:
C＝(9.87KC′-C
0)×[1-exp(-1.013×10
5×HAt/dV)]+C
0 (1)
In the formula, gas concentration in the C-air chamber, gas concentration in C '-oil, V-gas chamber volume, A-oil and film contact area, the thickness of d-film, the equilibrium constant of K-gas, C
0Gas initial concentration in the-air chamber, t-penetration time, the rate of permeation of H-film.Through the sufficiently long time, in the oil phase in gas and the gas phase gas reach running balance, according to Henry's law, the both sides gas concentration has a fixed scale-up factor, detects phase concentrations and just can release gas concentration in the oil.
The mode of operation that the present invention is used for the tubular fibre gas and oil separating plant of transformer online monitoring is: in off working state, magnetic valve 6 turn-offs, and oil pump 3 and vacuum pump 7 do not turn round.In working order, magnetic valve 6 is open-minded, oil pump 3 and all entrys into service of vacuum pump 7, and the gas that vacuum pump 7 drives in the gas circuit circulates, and the high density gas in the tubular fibre is constantly upgraded by the light concentration gas of outer gas circuit like this, the gas initial concentration C in the formula (1)
0Less relatively, improved gas-permeable speed.And because the gas in the oil circuit constantly is penetrated in the gas circuit, oil dissolved gas in hollow-fiber module 4 shells 15 can reduce, so the oil that oil pump 3 drives in the oil circuit circulates, oil in the transformer 1 constantly replenishes into, the gas concentration of the oil in hollow-fiber module 4 shells 15 is remained unchanged substantially, be equivalent in the formula (1) that gas concentration C ' remains on maximum value in the oil, improved gas-permeable speed.Turn round after one hour, gas-oil separation realizes balance, oil pump 3 and vacuum pump 7 all shut down, sampling quantity tube 9 internal gas pressures remain steady state value like this, follow-up proofing unit detects the gas in the sampling quantity tube at once, magnetic valve 6 turn-offs then, finishes the gas-oil separation work period like this one time.
From the above, the tubular fibre gas and oil separating plant that the present invention is used for transformer online monitoring at work, transformer oil is in closed state all the time, does not directly contact with air, can guarantee that oil is not polluted in the gas-oil separation process.
The structure of polyvinylidene difluoride (PVDF) hollow-fibre membrane is a unsymmetrical structure, is made up of the tight zone of very thin (number μ m) and the porous support layer of thicker (μ m up to a hundred).Porous support layer is mainly kept the self-supporting ability of tubular fibre, and the membrane permeation performance depends primarily on tight zone.The mechanism of oil gas membrane sepn is dissolving-diffusion process, so gas can pass through tight zone.Transformer oil is a mixture, and wherein micromolecular molecular weight has only about 100, and tight zone can prevent that oil molecule from penetrating in the gas circuit.The total thickness of film need be taken into account perviousness and support strength, is taken as about 100 μ m.For preventing that further oil molecule from seeing through film, the tubular fibre outside surface is handled to have improved the oil repellency energy with polyvinyl alcohol solution.Concrete grammar is that the polyvinyl alcohol solution of fiber with concentration 5g/L soaked 10 minutes, uses pure water rinsing after the taking-up.
The permeability of unformed tetrafluoroethylene (Teflon AF) surpasses poly tetrafluoroethylene greatly, and particularly to the rate of permeation H of several fault signature gases, the hundreds of that is tetrafluoroethylene is to thousands of times; It is one of best up to now gas permeable material.Adopt the tubular fibre of unformed tetrafluoroethylene to be fine and close homogeneous texture, not stratified, can obtain better intensity like this, the defective of having stopped to form in the film process simultaneously causes the generation of oil leakage phenomenon.
The present invention is relatively simple for structure, and the mechanical part of device is few, can realize computer controlled automatic, can be used in on-line monitoring.This method can realize the balance of all fault signature gases through rig-site utilization in one hour, with respect to the oil and gas separation method of plate and frame film, speed is greatly improved.To important and transformer that the latent defective is arranged, can realize " urgent nurse " like this, promptly can carry out one-time detection, detect the development trend of fault in real time every one hour.
The above;, be not that attempt is done any pro forma restriction to the present invention according to this, only so every under the present invention's creation spirit for being used for explaining the present invention's preferred embodiment; any modification or the change done all must belong to the scope that the invention is intended to protection.
Claims (5)
1, a kind of tubular fibre gas and oil separating plant that is used for transformer online monitoring, it is characterized in that: it comprises:
One hollow-fiber module (4) comprising: shell (15); Hollow fiber bundle (16), the two ends of hollow fiber bundle (16) seal with Resins, epoxy end socket (13), and the centre adds stainless steel pillar stiffener (14), seals with resistance oil silicone rubber O shape circle (12) between Resins, epoxy end socket (13) and the shell (15); Shell (15) sidewall is provided with an oil-in (20) and an oil outlet (17), and shell (15) two ends are provided with an inlet mouth (18), an air outlet (11); The outside of each tubular fibre communicates with oil outlet (17) and oil-in (20) in the hollow fiber bundle (16), and the inside of each tubular fibre is connected with inlet mouth (18) and air outlet (11) by its openings at two ends in the hollow fiber bundle (16);
One oil pump (3), its import is connected with transformer (1) outlet by pipeline, and its outlet is connected with the oil-in (20) of hollow-fiber module (4) by pipeline;
Oil outlet (17) on hollow-fiber module (4) shell (15) is connected with transformer (1) import by pipeline (21), and pipeline (21) is provided with purging valve (2);
Oil well (5), magnetic valve (6), the vacuum pump (7) that is connected in series successively by pipeline, pipe (8) and sampling quantity tube (9) deoil, oil well (5) is tubbiness, oil well (5) sidewall is provided with the liquid level switch (10) of control magnetic valve (6), inlet mouth (18) on the shell (15) is connected with sampling quantity tube (9), and the air outlet (11) on the shell (15) is connected with the import of oil well (5).
2, the tubular fibre gas and oil separating plant that is used for transformer online monitoring as claimed in claim 1, it is characterized in that: hollow fiber bundle (16) is made up of 50-1000 root tubular fibre, and tubular fibre is made by unformed tetrafluoroethylene or polyvinylidene difluoride (PVDF).
3, the tubular fibre gas and oil separating plant that is used for transformer online monitoring as claimed in claim 1 or 2 is characterized in that: vacuum pump (7) is the miniature diaphragm pump.
4, the tubular fibre gas and oil separating plant that is used for transformer online monitoring as claimed in claim 1 or 2 is characterized in that: oil pump (3) is the miniature gears pump.
5, the tubular fibre gas and oil separating plant that is used for transformer online monitoring as claimed in claim 1 or 2 is characterized in that: liquid level switch (10) is the photoelectric liquid-levle switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410030892 CN1280002C (en) | 2004-04-09 | 2004-04-09 | Oil-gas separation equipment of hollow fiber in use for monitoring transformer online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410030892 CN1280002C (en) | 2004-04-09 | 2004-04-09 | Oil-gas separation equipment of hollow fiber in use for monitoring transformer online |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1562449A true CN1562449A (en) | 2005-01-12 |
| CN1280002C CN1280002C (en) | 2006-10-18 |
Family
ID=34481208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410030892 Expired - Lifetime CN1280002C (en) | 2004-04-09 | 2004-04-09 | Oil-gas separation equipment of hollow fiber in use for monitoring transformer online |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1280002C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546646B (en) * | 2009-03-26 | 2011-07-20 | 上海交通大学 | On-line monitoring oil-gas separation device for transformer |
| CN102139185A (en) * | 2010-12-31 | 2011-08-03 | 北京华电云通电力技术有限公司 | Membrane device for monitoring separation of dissolved gases in transformer oil on line |
| CN102527094A (en) * | 2011-12-30 | 2012-07-04 | 昆山和智电气设备有限公司 | Oil-gas separation device for transformer insulation oil |
| CN104857743A (en) * | 2014-02-21 | 2015-08-26 | 中国石油化工股份有限公司 | Polymer solution sealed deoxygenation device and method |
| CN105097190A (en) * | 2015-09-29 | 2015-11-25 | 深圳市旭明消防设备有限公司 | Charged full-automatic flame failure protection device and protection method for oil immersed transformer |
| CN106680297A (en) * | 2017-03-09 | 2017-05-17 | 重庆大学 | Method for observing dispersion staining images of fibers in transformer oil |
| CN111579499A (en) * | 2020-05-15 | 2020-08-25 | 云南电网有限责任公司电力科学研究院 | Membrane module for separating and detecting dissolved gas in transformer oil |
-
2004
- 2004-04-09 CN CN 200410030892 patent/CN1280002C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546646B (en) * | 2009-03-26 | 2011-07-20 | 上海交通大学 | On-line monitoring oil-gas separation device for transformer |
| CN102139185A (en) * | 2010-12-31 | 2011-08-03 | 北京华电云通电力技术有限公司 | Membrane device for monitoring separation of dissolved gases in transformer oil on line |
| CN102139185B (en) * | 2010-12-31 | 2013-10-02 | 北京华电云通电力技术有限公司 | Membrane device for monitoring separation of dissolved gases in transformer oil on line |
| CN102527094A (en) * | 2011-12-30 | 2012-07-04 | 昆山和智电气设备有限公司 | Oil-gas separation device for transformer insulation oil |
| CN102527094B (en) * | 2011-12-30 | 2014-03-19 | 昆山和智电气设备有限公司 | Oil-gas separation device for transformer insulation oil |
| CN104857743A (en) * | 2014-02-21 | 2015-08-26 | 中国石油化工股份有限公司 | Polymer solution sealed deoxygenation device and method |
| CN104857743B (en) * | 2014-02-21 | 2017-01-18 | 中国石油化工股份有限公司 | Polymer solution sealed deoxygenation device and method |
| CN105097190A (en) * | 2015-09-29 | 2015-11-25 | 深圳市旭明消防设备有限公司 | Charged full-automatic flame failure protection device and protection method for oil immersed transformer |
| CN106680297A (en) * | 2017-03-09 | 2017-05-17 | 重庆大学 | Method for observing dispersion staining images of fibers in transformer oil |
| CN111579499A (en) * | 2020-05-15 | 2020-08-25 | 云南电网有限责任公司电力科学研究院 | Membrane module for separating and detecting dissolved gas in transformer oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1280002C (en) | 2006-10-18 |
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