CN103695150A - Regeneration technology of transformer insulating oil - Google Patents
Regeneration technology of transformer insulating oil Download PDFInfo
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- CN103695150A CN103695150A CN201310725416.5A CN201310725416A CN103695150A CN 103695150 A CN103695150 A CN 103695150A CN 201310725416 A CN201310725416 A CN 201310725416A CN 103695150 A CN103695150 A CN 103695150A
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Abstract
The invention belongs to the technical field of regeneration of oils, and particularly relates to a regeneration technology of transformer insulating oil. The transformer insulating oil adopts the open circulation; meanwhile, the atmospheric pressure around the insulating oil is reduced. In conclusion, the regeneration technology of the insulating oil improves the regeneration efficiency of the insulating oil, largely enhances the quality of the insulating oil, and has strong practical and promotional values.
Description
Technical field
The invention belongs to oils regeneration techniques field, particularly a kind of reclaiming process of transformer insulation oil.
Background technology
Transformer is important electric installation, and transformer insulation oil is the important insulation of transformer and heat-eliminating medium, and the quality of transformer oil directly affects the safe and stable operation of transformer.Transformer insulation oil is in long-term operational process, be subject to the effect of electric field, humidity, temperature, light, oxygen and foreign material, its chemical physics performance and dielectric properties progressively degenerate and are aging, the result that transformer oil is aging will produce the suspended substances such as various oxide compounds, moisture, organic acid, methane, ethene, acetylene, carbon granules, cause transformer oil variable color, acid number rising, flash-point to reduce, dielectric properties worsen.The fault of some transformers and accident have direct relation with the quality of transformer oil invariably.At present, the regeneration of transformer insulation oil is all to adopt closed cycle to filter, and transformer insulation oil enters oil filter from the bottom of transformer, and then from oil filter outlet, enters the top of transformer, because transformer oil is mixing in filtration procedure always, so oil strain efficiency is relatively low.Special in the large user of transformer consumption, as power plant etc., transformer insulated oilreserves is large, if according to current regeneration purification techniques, the regeneration of transformer insulation oil is for time-consuming a, effort, inefficient loaded down with trivial details work.How to shorten oil filtration time, improve oil strain efficiency and become the problem that transformer insulation oil reclaiming process important solution.
Summary of the invention
The reclaiming process that the object of this invention is to provide a kind of transformer insulation oil, can overcome that current technique is time-consuming, effort, inefficient problem.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A reclaiming process for transformer insulation oil, described transformer insulation oil adopts open cycle, reduces transformer oil air pressure around simultaneously.
Described open cycle is preferably as follows to be carried out: the transformer oil in transformer enters storage tank after filtering by oil filter, all enters after storage tank, then the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration until transformer oil.
Preferably, when the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration, start vacuum pumping pump, in transformer-cabinet, keep vacuum.Now keep vacuum, just can oil downwards " spray " disperse and form film while coming, and be sprayed at oil in device body from the top down in mobile process, oil meter area increases, fully be exposed to certain hour in vacuum, in oil, through the de-not most gas of two-stage vacuum oil filter, moisture, volatile acid etc., by vacuum pump, extracted out.
Further, the transformer oil in transformer enters in the process of storage tank after filtering by oil filter, when in transformer, transformer oil is lower than transformer-cabinet top 2cm, starts transformer to vacuumize.The time specifically vacuumizing takes out less than oil when vacuumizing.
Vacuum keep is 60-70pa.Concrete, the large I of vacuum tightness is adjusted according to the specification of transformer, as long as keep certain vacuum tightness.
When the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration, when the transformer oil height in transformer floods transformer core 2-3cm, detect transformer oil and whether reach standards for recycling; If not up to standard, repeat transformer oil and enter storage tank through strainer, then enter the process of transformer until transformer oil meets standards for recycling by storage tank secondary filtration.
The temperature of transformer oil is controlled as 60-70 ℃.
The flow of transformer oil is 2000-3500L/h.Continuous vacuumizing in degasification process, for improving degassing efficiency, also for reducing the impact of oil stream to core insulation, flow is preferably controlled simultaneously.Flow can suitably be adjusted according to the vacuum tightness in the size of transformer and transformer.
Oil filter adopts two-stage vacuum oil filter.
The present invention changes traditional closed cycle into open cycle, while avoided transformer oil to filter the problem of mixing.In addition, through research, transformer insulated oil gas dissolubility except with the characteristic of gas, outside the Pass the chemical composition of oil has, also humidity, the ambient air pressure when dissolving has close relationship.Under comparatively high temps and subatmospheric, in oil, dissolved gases moisture easily overflows from oil.Therefore but too high temperature easily makes transformer oil aging, reduce gas and moisture that transformer oil air pressure around can reduce dissolved in insulating oil, so that the small molecule hydrocarbon in oil, hydrogen, moisture, carbonic acid gas overflow.
On supporting equipment, except using two-stage vacuum oil filter and storage tank, transformer, on transformer body, increase and connect an evacuator.
Technique of the present invention has guaranteed degassing efficiency on the one hand, also has on the other hand dehydration concurrently and drives damp function.In the transformer box shell of high vacuum, oil downwards " spray " disperse and form film while coming, and be sprayed at oil in device body from the top down in mobile process, oil meter area increases, fully be exposed to certain hour in vacuum, in oil, through the de-not most gas of two-stage vacuum oil filter, moisture, volatile acid etc., by vacuum pump, extracted out, in addition because oily heat conductivity is good, the thermal capacity of oil is large again, and device body is played to deep fat heat drying effect to a certain extent.
By the improvement to transformer insulation oil oil strain technological process, transformer oil regeneration efficiency and quality have been improved, shortened oil strain process time, oil filtration time is shortened more than 20 times, thereby the transformer overhaul duration is shortened greatly, reduced the power consumption of oil filter, reduced the expenditure of time of filtering oil for transformer work, alleviate maintainer's work load, for the safe operation of equipment, established solid basis, there is good technical prospect and promotional value.
To sum up, transformer oil reclaiming process of the present invention has not only improved the regeneration efficiency of transformer oil, has also greatly improved the quality of transformer oil, has very strong practical and popularizing value.
Accompanying drawing explanation
Fig. 1 is that the present invention carries out back and forth the schema of one direction vacuum outgas between storage tank and transformer body by transformer body.
Embodiment
With specific embodiment, technical scheme of the present invention is described below, but protection scope of the present invention is not limited to this:
A reclaiming process for transformer insulation oil, described transformer insulation oil adopts open cycle, reduces transformer oil air pressure around simultaneously.
Transformer oil in transformer enters storage tank after filtering by oil filter, all enters after storage tank, then the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration until transformer oil.
Referring to Fig. 1, in figure, dotted line represents that oil flows to storage tank from transformer, and solid line represents that in degasification process, oil flows to transformer from storage tank.Transformer oil in transformer enters in the process of storage tank after filtering by oil filter, in transformer transformer oil lower than transformer-cabinet top 2cm( transformer oil is not extracted out and to be as the criterion) time, starting transformer to be evacuated to vacuum tightness is 66.66pa; When the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration, when the transformer oil height in transformer floods transformer core 2-3cm, detect transformer oil and whether reach standards for recycling; If not up to standard, repeat transformer oil and enter storage tank through strainer, then enter the process of transformer oil until transformer oil meets standards for recycling by storage tank secondary filtration.The temperature of transformer oil is controlled as 60-70 ℃, and the flow of transformer oil is 3500L/h.
Oil filter adopts two-stage vacuum oil filter.
30 tons of transformer insulation oils are carried out to stratographic analysis, then through 20 hours (by minimum need of traditional technology 15 days) two single loops, (single loop refers to after the transformer oil in transformer filters by oil filter and enters storage tank, until transformer oil, all enter after storage tank, again the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration) regeneration, again transformer oil is carried out to stratographic analysis afterwards, analytical results is as shown in table 1:
Table 1
| ? | Before regeneration | After regeneration |
| H 2（uL/L） | 217 | 0.64 |
| CO 2（uL/L） | 4729 | 192 |
| CO（uL/L） | 743 | 1 |
| Total hydrocarbon (uL/L) | 66 | 0.95 |
Visible, transformer insulation oil utilizes the present embodiment renovation process to reach new oil standard, and has greatly shortened the recovery time.
Claims (9)
1. a reclaiming process for transformer insulation oil, is characterized in that, described transformer insulation oil adopts open cycle, reduces transformer oil air pressure around simultaneously.
2. the reclaiming process of transformer insulation oil as claimed in claim 1, it is characterized in that, transformer oil in transformer enters storage tank after filtering by oil filter, all enters after storage tank, then the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration until transformer oil.
3. the reclaiming process of transformer insulation oil as claimed in claim 2, is characterized in that, when the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration, keeps vacuum in transformer-cabinet.
4. the reclaiming process of transformer insulation oil as claimed in claim 3, it is characterized in that, transformer oil in transformer enters in the process of storage tank after filtering by oil filter, when in transformer, transformer oil is lower than transformer-cabinet top 2cm, starts transformer to vacuumize.
5. the reclaiming process of transformer insulation oil as claimed in claim 4, is characterized in that, vacuum keep is 60-70pa.
6. the reclaiming process of transformer insulation oil as claimed in claim 3, it is characterized in that, when the transformer oil in storage tank is entered to transformer after by oil filter secondary filtration, when the transformer oil height in transformer floods transformer core 2-3cm, detect transformer oil and whether reach standards for recycling; If not up to standard, repeat transformer oil and enter storage tank through strainer, then enter the process of transformer until transformer oil meets standards for recycling by storage tank secondary filtration.
7. the reclaiming process of the transformer insulation oil as described in as arbitrary in claim 1-6, is characterized in that, the temperature of transformer oil is controlled as 60-70 ℃.
8. the reclaiming process of transformer insulation oil as claimed in claim 7, is characterized in that, the flow of transformer oil is 2000-3500L/h.
9. the reclaiming process of transformer insulation oil as claimed in claim 7, is characterized in that, oil filter adopts two-stage vacuum oil filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725416.5A CN103695150A (en) | 2013-12-25 | 2013-12-25 | Regeneration technology of transformer insulating oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725416.5A CN103695150A (en) | 2013-12-25 | 2013-12-25 | Regeneration technology of transformer insulating oil |
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| CN103695150A true CN103695150A (en) | 2014-04-02 |
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| CN201310725416.5A Pending CN103695150A (en) | 2013-12-25 | 2013-12-25 | Regeneration technology of transformer insulating oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157407A (en) * | 2014-08-27 | 2014-11-19 | 国家电网公司 | Device for handling water or gas with content exceeding standards in oil of oil-immersed transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012114309A1 (en) * | 2011-02-25 | 2012-08-30 | Sabic Innovative Plastics Ip B.V. | Thermally conductive and electrically insulative polymer compositions containing a low thermally conductive filler and uses thereof |
| CN203338910U (en) * | 2013-06-03 | 2013-12-11 | 郑州荣奇热电能源有限公司 | Insulating oil regenerative device of transformer |
-
2013
- 2013-12-25 CN CN201310725416.5A patent/CN103695150A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012114309A1 (en) * | 2011-02-25 | 2012-08-30 | Sabic Innovative Plastics Ip B.V. | Thermally conductive and electrically insulative polymer compositions containing a low thermally conductive filler and uses thereof |
| CN203338910U (en) * | 2013-06-03 | 2013-12-11 | 郑州荣奇热电能源有限公司 | Insulating oil regenerative device of transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157407A (en) * | 2014-08-27 | 2014-11-19 | 国家电网公司 | Device for handling water or gas with content exceeding standards in oil of oil-immersed transformer |
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Application publication date: 20140402 |
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