CN102564998A - Method for identifying performance of reclaimed insulating oil - Google Patents
Method for identifying performance of reclaimed insulating oil Download PDFInfo
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- CN102564998A CN102564998A CN 201210034850 CN201210034850A CN102564998A CN 102564998 A CN102564998 A CN 102564998A CN 201210034850 CN201210034850 CN 201210034850 CN 201210034850 A CN201210034850 A CN 201210034850A CN 102564998 A CN102564998 A CN 102564998A
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Abstract
The invention discloses a method for identifying the performance of reclaimed insulating oil. In the method, a metal element (copper) in an oil sample is detected through an emission spectrometer, and the content of the metal element (copper) in the oil sample is equal to or higher than 0.1 mg/kg; or the ageing test is carried out to the oil sample, and the content of the metal element (copper) in the oil sample is equal to or higher than 0.3 mg/kg; or the saponification value analysis is carried out to the oil sample, and the saponification value is greater than 0.09 mgKOH/g; or the spectral analysis is carried out to the oil sample through an infra-red spectrometer, and a negative peak exists at the 3350(cm-1) wavelength in the oil sample spectrogram; and the oil sample is judged as a conventional reclaimed oil if one or more conditions above are met. In the method, the nature of oil is judged by detecting whether a product is generated in the oil sample as well as the content of the product, therefore, the method has the advantages of simplicity, practicability, high accuracy and the like.
Description
Technical field
The invention belongs to the detection method of oil for electric power, be specifically related to a kind of performance discrimination method of the insulating oil of regenerating.
Background technology
Some confusion of supply the market of present transformer oil, useful often reclaimed oil pretend to be fresh oil to sell power administration and each power department is respectively used oily unit, and causes certain loss for some unit.These reclaimed oils carry out an acceptance inspection by existing GB fresh oil items for acceptance, its each item index all in acceptability limit, just than fresh oil more a little near threshold value, this just gives and checks and accepts and distinguish and brought difficulty.Behind these reclaimed oil access arrangements of low quality; Oil is deterioration easily; Safe and stable operation to equipment brings certain harm, so be necessary problem how to differentiate fresh oil and reclaimed oil is carried out deep research, seeks the performance index that more can reflect the difference of reclaimed oil and fresh oil; Thereby distinguish fresh oil and reclaimed oil effectively, stop the harm that reclaimed oil brings electrical equipment.
Summary of the invention
The performance discrimination method that the purpose of this invention is to provide a kind of insulating oil of regenerating fast and effectively so that can distinguish fresh oil and reclaimed oil within a short period of time, is stopped the harm that reclaimed oil brings electrical equipment.
The performance discrimination method of regeneration insulating oil provided by the invention, it is to utilize emission spectrometer that the metallic copper element in the oil sample is detected, the metallic element copper content in the oil sample is equal to or greater than 0.1mg/kg; Or oil sample carried out aging test, the metallic element copper content in the oil sample is equal to or greater than 0.3mg/kg; Or oil sample carried out the saponification number analysis, saponification number is greater than 0.09mgKOH/g; Or utilizing infrared spectrometer that oil sample is carried out spectral analysis, 3350 (cm-1) wavelength has negative peak in the oil sample spectrogram; Satisfy wherein a kind of and more than one situation can judge that oil sample is common reclaimed oil.
Said emission spectrometer is oil plant spectrometer or inductively coupled plasma emission spectrometer.
In the said aging test, to oil sample outgas handle after, put into copper sheet, temperature is controlled at 150 ℃, test period is 240 hours.
Said saponification number analysis can be carried out according to national GB/T8021-2003 standard.
Whether the present invention a kind ofly produces the method that certain product and content are judged oil properties through detecting in the oil sample, therefore have simple and practical, the accuracy advantages of higher.
Below in conjunction with content of the test and accompanying drawing the present invention is described further.
Description of drawings
Fig. 1 is the fresh oil infrared spectrogram.
Fig. 2 is the reclaimed oil infrared spectrogram.
Embodiment
The performance discrimination method of regeneration insulating oil of the present invention is; It is to utilize emission spectrometer such as oil plant spectrometer or inductively coupled plasma emission spectrometer that the metallic copper element in the oil sample is detected, and the metallic element copper content in the oil sample is equal to or greater than 0.1mg/kg; Or oil sample carried out aging test, with oil sample outgas handle after, put into copper sheet, temperature is controlled at 150 ℃, carries out test in 240 hours, the metallic element copper content in the oil sample is equal to or greater than 0.3mg/kg; Or oil sample carried out the saponification number analysis, and can carry out according to the GB/T8021-2003 standard, saponification number is greater than 0.09mgKOH/g; Or utilizing infrared spectrometer that oil sample is carried out spectral analysis, 3350 (cm-1) wavelength has negative peak in the oil sample spectrogram; Satisfy wherein a kind of and more than one situation can judge that oil sample is common reclaimed oil.
Detect principle:
Insulating oil is along with change of time all can decomposition product.Oil is early stage deterioration, in case generated serial superoxide, this unstable compounds has just begun chain reaction.Deterioration process that it is generally acknowledged oil is through three phases (being stage induction period, stage reaction period and stage in lag phase), and its main decomposition product is: the ⑴ superoxide; ⑵ water soluble acid; ⑶ low molecular acid (can fully by cellulose adsorption); ⑷ fats; ⑸ moisture; ⑹ alcohols; ⑺ metallic soap class (comprising that copper naphthenate and naphthenic acid are ferrous); ⑻ aldehydes; ⑼ ketone; ⑽ varnish; ⑾ pitch thin oil mud.And if under high temperature and arcing, the carbochain generation chain rupture and the dehydrogenation of oil then have low molecular hydrocarbon class gas and generate.Discrimination method of the present invention carries out according to above product property.
1, the difference of new transformer oil and useless transformer oil.
New transformer oil and the comparison of useless transformer oil performance can be found out that useless transformer oil all has tangible difference with new transformer oil by table 1 on each analysis project.
Table 1
2, the characteristic of reclaimed oil.
Uniting refining is the most frequently used technological process in present waste oil regeneration market, particularly middle-size and small-size reclaimed oil manufacturer, and what generally use is this regeneration.This test is carried out performance evaluation to four reclaimed oils that obtained respectively.Wherein sample one is to be the reclaimed oil of the reclaimed oil factory production of sulfuric acid-clay-filtered method of reproduction from production technology with sample two; Sample three is certain two types reclaimed oils that useless transformer oil reclaim equiment is produced with sample four.Can find out the oily each item analysis indexes of four samples except there are differences individually by table 2, other is all more approaching.This just explains that reclaimed oil has common characteristic.
Table 2
3, fresh oil and reclaimed oil aged properties are relatively.
Choosing above subjects is put in respectively in the open glass cup; After the T501 anti-oxidant of adding 0.3% and heating stir in each subjects respectively; Place after 24 hours, add a certain amount of screw type copper wire (self-control), the formation testing beaker is put in the enamel tray; Be placed on and carry out aging test in the baking oven, temperature is controlled between 150 ± 1 ℃.After wearing out 3 days, 6 days and 10 days, each oil product has been carried out the test of some projects.Test result is seen table 3, and after showing to find out that the partial regeneration oil samples wore out 10 days, its metallic element copper content is more than or equal to 0.3mg/kg.
Table 3
4, fresh oil and reclaimed oil IR spectroscopy are relatively.
Can find out that by Fig. 1 3350 (cm-1) wavelength does not have negative peak in the infrared spectrogram of fresh oil.Can find out by Fig. 2, contain that 3350 (cm-1) wavelength has negative peak in the more reclaimed oil a of alcohols material, its infrared spectrogram of b.
In sum, can draw with the oil product that judges is the main foundation of reclaimed oil, and satisfy in the inventive method one and above situation and can be judged as common reclaimed oil: 1, metallic element copper content is equal to or greater than 0.1mg/kg; 2, after aging 10 days, metallic element copper content is more than or equal to 0.3mg/kg; 3, saponification number is greater than 0.09mgKOH/g; 4,3350 (cm-1) wavelength has negative peak in the infrared spectrum spectrogram.
Claims (4)
1. the performance discrimination method of the insulating oil of regenerating is characterized in that utilizing emission spectrometer that the metallic copper element in the oil sample is detected, and the metallic element copper content in the oil sample is equal to or greater than 0.1mg/kg; Or oil sample carried out aging test, the metallic element copper content in the oil sample is equal to or greater than 0.3mg/kg; Or oil sample carried out the saponification number analysis, saponification number is greater than 0.09mgKOH/g; Or utilizing infrared spectrometer that oil sample is carried out spectral analysis, 3350 (cm-1) wavelength has negative peak in the oil sample spectrogram; Satisfy wherein a kind of and more than one situation can judge that oil sample is common reclaimed oil.
2. the performance discrimination method of regeneration insulating oil according to claim 1 is characterized in that said emission spectrometer is oil plant spectrometer or inductive coupling emission of ions spectrometer.
3. the performance discrimination method of regeneration insulating oil according to claim 1 and 2 is characterized in that in the said aging test, to oil sample outgas handle after, put into copper sheet, temperature is controlled at 150 ℃, test period is 240 hours.
4. the performance discrimination method of regeneration insulating oil according to claim 3 is characterized in that said saponification number analysis is to carry out according to national GB/T8021-2003 standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210034850 CN102564998A (en) | 2012-02-16 | 2012-02-16 | Method for identifying performance of reclaimed insulating oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210034850 CN102564998A (en) | 2012-02-16 | 2012-02-16 | Method for identifying performance of reclaimed insulating oil |
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| CN102564998A true CN102564998A (en) | 2012-07-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525840A (en) * | 2020-11-25 | 2021-03-19 | 中海沥青股份有限公司 | Rapid identification method for petroleum asphalt source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525840A (en) * | 2020-11-25 | 2021-03-19 | 中海沥青股份有限公司 | Rapid identification method for petroleum asphalt source |
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Application publication date: 20120711 |