CN107179315A - A kind of transformer oil moisture measurement test paper, preparation and application - Google Patents
A kind of transformer oil moisture measurement test paper, preparation and application Download PDFInfo
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- CN107179315A CN107179315A CN201710560872.7A CN201710560872A CN107179315A CN 107179315 A CN107179315 A CN 107179315A CN 201710560872 A CN201710560872 A CN 201710560872A CN 107179315 A CN107179315 A CN 107179315A
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- test paper
- transformer oil
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N2021/775—Indicator and selective membrane
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a kind of transformer oil moisture measurement test paper, prepare and application, the test paper is, for carrier, to be immersed in what is prepared in developer with the plain scraps of paper (content of cellulose is 99.1 99.6%) of general fibre.The composition of developer is：38 40% copper sulphate are weighed according to mass percent in water-less environment, 38 40% calcium sulfides, the mixed-powder of 20 22% acid blues is dissolved in dispersion mixing in petroleum ether uniform.Test paper of the present invention is light blue, can delicately detect the micro-moisture in transformer oil, its colourshifting process is：Light blue → navy blue → blue-green → black-and-blue, is navy blue during moisture 20ppm, and the obvious, term of validity length that changes colour, directly perceived, making easy to detect are simple, with low cost.
Description
Technical field
The present invention relates to a kind of quick, sensitive, easily transformer oil moisture measurement test paper, preparation and application, belonging to
Learn detection field.
Background technology
The larger electric property that can make transformer oil of Water Content in Transformer Oil degenerates, and can make breakdown voltage, insulated electro
Resistance declines, and dielectric loss increase, the integral insulation level of electrical equipment declines.The degradation with aging of paper fiber material can be accelerated, especially
It is that, when containing more low molecular acid in oil, moisture more very, makes insulating paper by permanent destruction to fiber Hydrolysis, because
This must strictly monitor the moisture in transformer oil.
Currently without the test paper for detecting transformer oil moisture, the conventional method of detection transformer oil moisture has storehouse
Human relations method, gas chromatography, infra-red sepectrometry etc., these detection methods, it is desirable to have laboratory condition, and detection time is longer,
Operation is loaded down with trivial details, costly, is unfavorable for field quick detection.Therefore, in the urgent need to set up it is quick, convenient, can be direct at the scene
Determine the method and its technological means of Water Content in Transformer Oil.
The content of the invention
It is an object of the invention to provide one kind it is quick, sensitive, easily transformer oil moisture measurement test paper, prepare and should
With prepared test paper can detect moisture at the scene, the obvious, term of validity length that changes colour, directly perceived, making easy to detect
Simply, it is with low cost, provide early warning for transformer fault.
Realizing the technical scheme of above-mentioned purpose is：
The invention provides a kind of transformer oil moisture content test paper, described is the leaching using the plain scraps of paper of general fibre as carrier
What bubble was prepared in developer；The preparation of the developer is with mass percent to weigh 38-40% in water-less environment
Copper sulphate, 38-40% calcium sulfides, the mixture of 20-22% acid blues grinds into powdered and dried to constant weight, is then dissolved in
Dispersion mixing is uniform in petroleum ether.
Further, the carrier is the cellulose scraps of paper of the content of cellulose in 99.1-99.6%.
Further, the test paper length is 8-10 centimetres, and width is 0.5-1 centimetres.
Further, it is AR that developer, which prepares copper sulphate, calcium sulfide, acid blue and petroleum ether used,.
Further, the immersion process be the cellulose scraps of paper are put into time for being soaked in developer for 24 hours and with
On.
Further, the cellulose scraps of paper after the immersion, which are put into drier, deposits standby.
The preparation method of transformer oil moisture measurement test paper of the present invention is carried out as steps described below：
Step 1: weighing mass percent 38-40% copper sulphate, 38-40% calcium sulfides, the mixing of 20-22% acid blues
Thing, is placed in mortar and is ground into powder, is put into baking oven and is dried at temperature to constant weight, to remove moisture.After drying
Mixed-powder, which is dissolved in being stirred continuously in petroleum ether, to be uniformly dispersed, and soaks 24 hours and developer derived above.
Dry, to remove moisture, the cellulose scraps of paper after drying are put into Step 2: the cellulose scraps of paper are put into baking oven
Soaked in developer petroleum ether, the cellulose scraps of paper after immersion are put into drier and deposit standby.
The present invention also provides above-mentioned test paper and detects the moisture judged in transformer oil, and methods described is as follows：
Transformer oil is drawn with dropper, about 5 milliliters of transformer oil are added dropwise on test paper, when the moisture in transformer oil
Content is when 10-20mg/L test paper color developments are light blue, and when the moisture in oil is more than 20mg/L, test paper color development is dark blue
Color.
Test paper prepared by the present invention is light blue, with the increase of Water Content in Transformer Oil, test paper discoloration
Process is：Light blue → navy blue → blue-green → black-and-blue.
The present invention principle be：It is the hydration reaction of copper sulphate first, produces the cupric sulfate pentahydrate of blueness.Acid blue is readily soluble
Solution, in blueness, can become navy blue in cold water and hot water under sour environment, big compared to cupric sulfate pentahydrate colour developing area, when continuing
Between it is long, change colour in visible-range sensitiveer.Calcium sulfide can produce hydrogen sulfide with water reaction, form sour environment, greatly
Improve the sensitivity of acid blue discoloration.The compounding reaction of these three materials not only increases the stability of color development system, is formed
There is the ligand of bigger conjugated system, with bigger spectral absorption capacity and effective add lustre to area, and its mole
Absorptivity is big, and reaction sensitivity and selectivity are high.
Reaction equation is as follows：
CuSO4+5H2O=CuSO4·5H2O
CaS+2H2O=Ca (OH)2+H2S
Acid blue C45H44N2NaO7S2Structural formula it is as follows：
The moisture in transformer oil is may determine that using above-mentioned transformer oil moisture measurement test paper, its method is such as
Under：
Transformer oil is drawn with dropper, about 5 milliliters of transformer oil are added dropwise on test paper, when the moisture in transformer oil
Content is when 10-20mg/L test paper color developments are light blue, when the moisture in oil is more than 20mg/L.Test paper color development is dark blue
Color.
Beneficial effect：
(1) matrix material that the present invention is used is the plain scraps of paper of general fibre, easy to make, with low cost.
(2) transformer water content in oil test paper of the invention is especially sensitive to micro-moisture in oil, passes through color change
The depth reflect the size of water content in oil content, intuitive and convenient.
(3) test paper is light blue, and with the increase of Water Content in Transformer Oil, test paper colourshifting process is：It is light blue
Color → navy blue → blue-green → black-and-blue discoloration is notable and easy to identify, term of validity length, it is easy to detect it is directly perceived, make it is simple, into
This is cheap.
Brief description of the drawings
Fig. 1 is the infrared spectrum structure chart of transformer oil moisture measurement test paper.
Fig. 2 is transformer oil moisture measurement test paper colourshifting process figure.
Embodiment
In order to be better understood from and implement, the present invention is described in detail by specific embodiment, but do not limit the present invention.
Embodiment 1：Transformer oil moisture measurement test paper, is prepared from especially by the method comprised the following steps：
Step one：9 grams of copper sulphate, 9 grams of calcium sulfides and 5 grams of acid blues are weighed, is placed in mortar and is ground into powder, put
Enter in baking oven and dried at a temperature of 80 DEG C to constant weight, to remove moisture.Mixed-powder after drying is put into 200 milliliters of petroleum ethers
In be stirred continuously and be uniformly dispersed, obtain developer.
Step 2：It is 8 centimetres that the cellulose scraps of paper are cut into length, and width is 1 centimetre of the scraps of paper, is put into baking oven at 80 DEG C
At a temperature of dry to constant weight, to remove moisture.
Step 3：The cellulose scraps of paper after drying are put into developer soak 24 hours and more than, soak time is short aobvious
Toner can not be sufficiently submerged in the cellulose scraps of paper, and the cellulose scraps of paper after immersion are put into drier and deposit standby.
The test paper prepared is detected through infrared spectrum, as shown in Figure 1：Have very strong in 1360-1000cm-1 regions
Absworption peak and peak shape are sharp, are the characteristic peaks of C-N- bases, show that developer has been immersed on the scraps of paper.
The assay method of transformer oil moisture：Transformer oil is drawn with dropper, about 5 milliliters of transformer oil are added dropwise and are tried in test
On paper, then compare the change of test paper color.
It should be noted that above-described embodiment is highly preferred embodiment of the invention, the protection model of the present invention is not intended to limit
Enclose.Embodiment 2：The judgement of test paper sensitivity
The cellulose scraps of paper prepared in embodiment 1 are immersed in developer, transformer oil is drawn with dropper, about 5 are added dropwise
The change that milliliter transformer oil compares test paper color on the test paper of different soak times, then see the table below：
It can be seen that, the sensitivity of test paper has very big relation with soak time, when soak time reach 24 it is small when more than, test paper
With more preferable sensitivity.
Embodiment 3：Determine the transformer oil results contrast of different in moisture content
Laboratory using micro-water analyzer according to《Transformer oil and steam turbine profit in GB/T 7600-2014 operations
Divide content determination (coulomb method)》The moisture of different transformer oil is detected, the change of different in moisture content is tested with the test paper
Depressor oil, testing result such as following table：
With the increase of Water Content in Transformer Oil, as shown in Fig. 2 test paper color colourshifting process is：It is light blue → deep
Blueness → blue-green → black-and-blue, changes colour notable and easy to identify.Because dry transformer oil moisture measurement test paper is light blue,
Test paper aobvious navy blue when detecting water content 20ppm transformer oil, most substantially and stably, therefore water content 20ppm is for colour developing
The critical value of test paper discoloration.
Claims (9)
1. a kind of transformer oil moisture content test paper, it is characterised in that：Described is, using the plain scraps of paper of general fibre as carrier, to be immersed in
Prepared in developer；The preparation of the developer is with mass percent to weigh 38-40% sulfuric acid in water-less environment
Copper, 38-40% calcium sulfides, the mixture of 20-22% acid blues grinds into powdered and dried to constant weight, is then dissolved in oil
Dispersion mixing is uniform in ether.
2. test paper according to claim 1, it is characterised in that：The carrier is content of cellulose in 99.1-
The 99.6% cellulose scraps of paper.
3. test paper according to claim 1, it is characterised in that：The test paper length is 8-10 centimetres, and width is
0.5-1 centimetres.
4. test paper according to claim 1, it is characterised in that：Developer prepares copper sulphate used, calcium sulfide, acid
Property blue and petroleum ether be AR.
5. test paper according to claim 1, it is characterised in that：The immersion process be the cellulose scraps of paper are put into it is aobvious
The time soaked in toner be 24 hours and more than.
6. test paper according to claim 1, it is characterised in that：The cellulose scraps of paper after the immersion are put into drier
Interior storage is standby.
7. the preparation method of any described test paper of claim 1~6, it is characterised in that comprise the following steps：
Step 1: weighing mass percent 38-40% copper sulphate, 38-40% calcium sulfides, the mixture of 20-22% acid blues is put
Powder is ground into mortar, is put into baking oven and is dried at temperature to constant weight, to remove moisture, by the mixed powder after drying
End, which is dissolved in being stirred continuously in petroleum ether, to be uniformly dispersed, and soaks 24 hours and developer derived above；
Dried Step 2: the cellulose scraps of paper are put into baking oven, to remove moisture, the cellulose scraps of paper after drying are put into colour developing
Soaked in agent petroleum ether, the cellulose scraps of paper after immersion are put into drier and deposit standby.
8. any described test paper detection of claim 1~6 judges the moisture in transformer oil, it is characterised in that
Methods described is as follows：
Transformer oil is drawn with dropper, about 5 milliliters of transformer oil are added dropwise on test paper, when the moisture in transformer oil
When 10-20mg/L test paper color developments are light blue, when the moisture in oil is more than 20mg/L, test paper color development is navy blue.
9. test paper detection according to claim 8 judges the moisture in transformer oil, it is characterised in that：The test
Test paper is light blue, and with the increase of Water Content in Transformer Oil, test paper colourshifting process is：Light blue → navy blue → bluish-green
Color → black-and-blue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560872.7A CN107179315B (en) | 2017-07-11 | 2017-07-11 | A kind of transformer oil moisture measurement test paper, preparation and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710560872.7A CN107179315B (en) | 2017-07-11 | 2017-07-11 | A kind of transformer oil moisture measurement test paper, preparation and application |
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| Publication Number | Publication Date |
|---|---|
| CN107179315A true CN107179315A (en) | 2017-09-19 |
| CN107179315B CN107179315B (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710560872.7A Active CN107179315B (en) | 2017-07-11 | 2017-07-11 | A kind of transformer oil moisture measurement test paper, preparation and application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283165A (en) * | 2018-10-31 | 2019-01-29 | 曲阜师范大学 | The preparation method and application of water microanalysis fluorescent test paper strip in a kind of organic reagent |
| CN113640284A (en) * | 2021-09-06 | 2021-11-12 | 武汉理工大学 | Method and device for rapidly detecting nickel ions |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740781A (en) * | 2005-09-18 | 2006-03-01 | 青岛海洋化工有限公司 | Novel blue variable colour indicator agent and producing process thereof |
| CN203396707U (en) * | 2013-08-13 | 2014-01-15 | 中国南方航空工业(集团)有限公司 | Test paper for detecting moisture in fuel oil |
-
2017
- 2017-07-11 CN CN201710560872.7A patent/CN107179315B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740781A (en) * | 2005-09-18 | 2006-03-01 | 青岛海洋化工有限公司 | Novel blue variable colour indicator agent and producing process thereof |
| CN203396707U (en) * | 2013-08-13 | 2014-01-15 | 中国南方航空工业(集团)有限公司 | Test paper for detecting moisture in fuel oil |
Non-Patent Citations (2)
| Title |
|---|
| A. SHKOLNIK等: "Determination of Water Content in Transformer Insulation", 《INTERNATIONAL CONFERENCE ON DIELECTRIC LIQUIDS》 * |
| 唐德东等: "基于变压器油的微水在线测量传感器的研制", 《计量技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283165A (en) * | 2018-10-31 | 2019-01-29 | 曲阜师范大学 | The preparation method and application of water microanalysis fluorescent test paper strip in a kind of organic reagent |
| CN109283165B (en) * | 2018-10-31 | 2020-11-06 | 曲阜师范大学 | Preparation method and application of fluorescent test strip for analyzing trace water in organic reagent |
| CN113640284A (en) * | 2021-09-06 | 2021-11-12 | 武汉理工大学 | Method and device for rapidly detecting nickel ions |
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| Publication number | Publication date |
|---|---|
| CN107179315B (en) | 2019-08-20 |
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