CN104807715B - A kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method - Google Patents
A kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method Download PDFInfo
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- CN104807715B CN104807715B CN201510187660.XA CN201510187660A CN104807715B CN 104807715 B CN104807715 B CN 104807715B CN 201510187660 A CN201510187660 A CN 201510187660A CN 104807715 B CN104807715 B CN 104807715B
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- Prior art keywords
- mineral oil
- sulfur hexafluoride
- filter membrane
- hexafluoride gas
- quality
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- 239000002480 mineral oil Substances 0.000 title claims abstract description 60
- 235000010446 mineral oil Nutrition 0.000 title claims abstract description 60
- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 34
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 34
- 239000012530 fluid Substances 0.000 title claims abstract description 20
- 238000004445 quantitative analysis Methods 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 16
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000002835 absorbance Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of quantitative approach of sulfur hexafluoride gas mineral oil in fluid content, the content of sulfur hexafluoride mineral oil in fluid is directly traceable to quality, i.e., measurement detection filter membrane passes through the mass incremental after certain volume sulfur hexafluoride gas.The quantitative approach determines its absorbance by spraying certain density mineral oil carbon tetrachloride solution in multiple filter membrane surfaces after constant weight after solution completely volatilization, then on infrared spectrophotometer, draws absorbance and is realized with weightening relation quantitation curves.The sulfur hexafluoride gas mineral oil in fluid content quantitative method of the present invention solves the mineral oil standard liquid highly volatile prepared during conventional mineral oil content detection and causes the big difficult point of parallel test error, with it is quantitatively accurate, easy to operate, stability is high the features such as.
Description
Technical field
The present invention relates to a kind of quantitative approach of sulfur hexafluoride gas mineral oil in fluid content；Belong to electrochemically technology neck
Domain.
Background technology
Either industrial sulfur hexafluoride gas or operating sulfur hexafluoride gas, mineral oil content is all its quality control
The key index of system, the security and service life for raising electrical equipment is most important.At present, sulfur hexafluoride gas chats
Quantifying for thing oil content, need to be measured by the carbon tetrachloride titer of mineral oil is prepared, due to carbon tetrachloride volatility
Extremely strong, it is more to prepare solution quantity, causes that parallel test error is larger, accuracy is not high.As sulfur hexafluoride gas is set in electric power
Extensive use in standby, develops new mineral oil quantitative approach, improves the accuracy of mineral oil content detection, to ensureing power network peace
Full stable operation is particularly significant.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide small lithium of a kind of stabilization, accurate, error
Sulphur gas mineral oil in fluid content quantitative method.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that：
The invention discloses a kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method, comprise the following steps：
S1, drawing curve：N filter membranes are taken, quality is weighed and numbers, the carbon tetrachloride solution of mineral oil are prepared, to N
Filter membrane difference spray solution 0,1,2 ..., N-1 time, after weighing the quality that N opens filter membrane respectively again after solvent completely volatilization, obtain
After to spray solution increase weight quality be respectively m1, m2, m3 ..., mn, then by filter membrane successively on infrared spectrophotometer carry out
Measurement, determines 2930cm-1The absorbance of wave number, then increases weight quality to absorbance drawing with filter membrane, produces working curve；
S2, recovery by mineral oil：Sulfur hexafluoride gas to be detected is flowed through to the detection filter membrane of blank, ore deposit with uniform flow velocity
Thing oil is intercepted and absorbed completely by filter membrane；
S3, mineral oil content are quantitative：The detection filter membrane for absorbing mineral oil that step S2 is obtained is in ir spectrophotometry
Measured on meter, determine 2930cm-1The absorbance of wave number, reads the quality of mineral oil on working curve, then passes through area
It is mineral oil quality actual on the detection filter membrane than converting, obtains the mineral oil content in sulfur hexafluoride gas.
Preferably, N is that 8, N filter membranes and detection filter membrane are PTFE filter membranes.
Wherein, the aperture of N filter membranes is 0.01 micron, a diameter of 100 millimeters；The aperture for detecting filter membrane is 0.01 micron,
A diameter of 10 millimeters.
The quantitative approach of the sulfur hexafluoride gas mineral oil in fluid content of the present invention is straight by the content of sulfur hexafluoride mineral oil in fluid
Connect and be traceable to quality, that is, detect that filter membrane passes through the mass incremental after certain volume sulfur hexafluoride gas.Due to the inspection of 10mm diameters
The mass incremental for surveying filter membrane is less than the detection range of assay balance, therefore, in the present invention, detects that the area of filter membrane will by changing
Its mass incremental amplifies 100 times, realizes precise, by spraying the certain density chlorination of mineral oil four in multiple filter membrane surfaces
Carbon solution determines its absorbance after constant weight after solution completely volatilization on infrared spectrophotometer, draws absorbance and is closed with weightening
It is that quantitation curves realize fast and accurately quantitative analysis.
The present invention is advantageous in that：The sulfur hexafluoride gas mineral oil in fluid content quantitative method of the present invention, is changed
The method of conventional preparing standard solution drawing curve, it is quantitative to realize that mass incremental of tracing to the source draws standard curve, solves
The big difficult point of parallel test error is caused due to carbon tetrachloride highly volatile during preparing standard solution.Further, open
The weighing increased weight to mineral oil is realized invasively：Sulfur hexafluoride gas mineral oil in fluid content is relatively low, nothing after detection filter membrane absorption
Method accurately measures the change of its quality, and filter membrane of the present invention from area for 100 times of filter membrane of detection uniformly sprays certain density
Mineral oil solution, the weightening of mineral oil unit area is similar with detection filter membrane, and due to the increase of the gross area, quality is increased
100 times, electronic balance precise can be used, so that drawing curve is carried out to the mineral oil content in sulfur hexafluoride gas
It is quantitative, the step of standard working curve is drawn is simplified, the accuracy of standard working curve is improved, in being sulfur hexafluoride gas
The measurement of mineral oil content provides reliable basis, further ensures the safe operation of inflation power equipment.
Embodiment
Make specific introduce to the present invention below in conjunction with specific embodiment.
The sulfur hexafluoride gas mineral oil in fluid content quantitative method of the present embodiment, comprises the following steps：
S1, drawing curve：The PTFE filter membranes of 8 100 millimeters of diameters are chosen, is numbered by 1-8, filter membrane matter is weighed successively
Amount；The carbon tetrachloride solution of certain density mineral oil is prepared, spray solution 0,1,2,3,4,5,6,7 is distinguished to 1-8 filter membranes
It is secondary, after solvent completely volatilization after weigh 1-8 filter membrane quality respectively again, obtain before and after weightening quality m1, m2, m3, m4, m5,
M6, m7, m8, filter membrane is measured on infrared spectrophotometer successively, 2930cm is determined-1The absorbance of wave number, then uses filter membrane
The quality that increases weight is drawn to absorbance, produces working curve；
2）Recovery by mineral oil：Sulfur hexafluoride gas to be detected is detected with certain flow velocity by a diameter of 10mm PTFE
Filter membrane, mineral oil is detected filter membrane and intercepted completely, and other components are unaffected by filter membrane；
3）Mineral oil content is quantified：After the completion of absorption, measured on infrared spectrophotometer, determine 2930cm-1Ripple
Several absorbances, reads the quality of mineral oil on working curve, then by area than converting to be actual on 10mm diameter filter membranes
Mineral oil quality, by reading numerical values on working curve divided by 100, calculating obtains actual mineral oil quality on filter membrane, so that it is determined that
Mineral oil content in sulfur hexafluoride gas.
To sum up, the present embodiment selects area to detect that it is molten that the filter membrane of 100 times of filter membrane uniformly sprays certain density mineral oil
Liquid, the weightening of mineral oil unit area is similar with detection filter membrane, and due to the increase of the gross area, quality increases 100 times, can adopt
Electronic balance precise is used, so that drawing curve is quantified to the mineral oil content in sulfur hexafluoride gas, is simplified
The step of standard working curve is drawn, improves the accuracy of standard working curve, is that sulfur hexafluoride gas mineral oil in fluid contains
The measurement of amount provides reliable basis, further ensures the safe operation of inflation power equipment.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way for above-described embodiment, it is all to be obtained by the way of equivalent or equivalent transformation
Technical scheme, all falls within protection scope of the present invention.
Claims (6)
1. a kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method, it is characterised in that comprise the following steps：
S1, drawing curve：N filter membranes are taken, quality is weighed and numbers, the carbon tetrachloride solution of mineral oil is prepared, to N filters
Film difference spray solution 0,1,2 ..., N-1 time, after solvent completely volatilization after weigh respectively again N open filter membrane quality, sprayed
Spill increased weight after solution quality be respectively m1, m2, m3 ..., mn, then filter membrane is surveyed on infrared spectrophotometer successively
Amount, determines 2930cm-1The absorbance of wave number, then increases weight quality to absorbance drawing with filter membrane, produces working curve；
S2, recovery by mineral oil：Sulfur hexafluoride gas to be detected is flowed through to the detection filter membrane of blank, mineral oil with uniform flow velocity
Intercepted and absorbed completely by filter membrane；
S3, mineral oil content are quantitative：The detection filter membrane for absorbing mineral oil that step S2 is obtained is on infrared spectrophotometer
Measure, determine 2930cm-1The absorbance of wave number, reads the quality of mineral oil on working curve, then converts as the detection
Actual mineral oil quality, obtains the mineral oil content in sulfur hexafluoride gas on filter membrane.
2. a kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method according to claim 1, it is characterised in that N is
8。
3. a kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method according to claim 1, it is characterised in that described
N filter membranes and detection filter membrane are PTFE filter membranes.
4. a kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method according to claim 3, it is characterised in that described
The aperture of N filter membranes is 0.01 micron, a diameter of 100 millimeters.
5. a kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method according to claim 4, it is characterised in that described
The aperture for detecting filter membrane is 0.01 micron, a diameter of 10 millimeters.
6. a kind of sulfur hexafluoride gas mineral oil in fluid content quantitative method according to claim 5, it is characterised in that described
In step S3, translation method is：Reading numerical values on working curve divided by 100 are produced into actual mineral oil quality on filter membrane.
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| CN107389589A (en) * | 2017-08-03 | 2017-11-24 | 国网安徽省电力公司电力科学研究院 | Detection absorption plant for sulfur hexafluoride gas |
| CN107356547B (en) * | 2017-08-03 | 2023-08-22 | 国网安徽省电力公司电力科学研究院 | Device for measuring mineral oil content in sulfur hexafluoride gas |
| CN107340266A (en) * | 2017-08-03 | 2017-11-10 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas detection absorption plant |
| CN107328731A (en) * | 2017-08-03 | 2017-11-07 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas mineral oil in fluid content assaying method and device |
| CN107300534A (en) * | 2017-08-03 | 2017-10-27 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas mineral oil in fluid detection method of content |
| CN110806391A (en) * | 2019-11-08 | 2020-02-18 | 湖北中烟工业有限责任公司 | Method for detecting oil stain on surface of dropping pill for cigarettes |
| CN113281294B (en) * | 2021-05-10 | 2023-06-06 | 河北建投能源科学技术研究院有限公司 | Quantitative detection method for mineral oil content in phosphate fire-resistant oil |
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| EP0859236A1 (en) * | 1997-02-14 | 1998-08-19 | Bp Chemicals S.N.C. | Determination of properties of oil |
| CN102539340A (en) * | 2010-12-15 | 2012-07-04 | 张家港凯纳信息技术有限公司 | Method for determining oil content and organic matter content in synthetic ammonia |
| CN103185702B (en) * | 2011-12-28 | 2015-12-16 | 格林美股份有限公司 | The detection method of paraffin content in a kind of wimet powder |
| CN102608053A (en) * | 2012-02-23 | 2012-07-25 | 北京水泥厂有限责任公司 | Detection method for mineral oil in sludge |
| CN102854167A (en) * | 2012-08-14 | 2013-01-02 | 浙江中一检测研究院股份有限公司 | Method for determination of concentration of mineral oil mist in workshop air |
| CN103364361B (en) * | 2013-04-09 | 2016-05-25 | 江苏国创环保科技有限公司 | A kind of infrared spectrophotometry that does not use oils in CFC class reagent Fast Measurement water |
| CN103558175A (en) * | 2013-10-31 | 2014-02-05 | 大连大公环境检测有限公司 | Method for determining oil substances in water sample |
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