CN106248917A - A kind of power station equipment liquid silastic aging assessment - Google Patents
A kind of power station equipment liquid silastic aging assessment Download PDFInfo
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- CN106248917A CN106248917A CN201610633310.6A CN201610633310A CN106248917A CN 106248917 A CN106248917 A CN 106248917A CN 201610633310 A CN201610633310 A CN 201610633310A CN 106248917 A CN106248917 A CN 106248917A
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- 239000007788 liquid Substances 0.000 title claims abstract description 61
- 229920000260 silastic Polymers 0.000 title claims abstract description 61
- 230000032683 aging Effects 0.000 title claims abstract description 46
- 238000006253 efflorescence Methods 0.000 claims abstract description 18
- 206010037844 rash Diseases 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 239000002932 luster Substances 0.000 claims abstract description 15
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 7
- 230000007797 corrosion Effects 0.000 claims abstract description 7
- 238000005260 corrosion Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000004611 spectroscopical analysis Methods 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000001228 spectrum Methods 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 238000009422 external insulation Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000011056 performance test Methods 0.000 abstract description 3
- 230000003679 aging effect Effects 0.000 abstract 1
- 229920002379 silicone rubber Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 1
- 229910018540 Si C Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- -1 radical siloxane Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
- G01N33/445—Rubber
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses a kind of power station equipment liquid silastic aging assessment, for the ageing properties of the liquid silastic outer insulation jacket of power station equipment is judged, performance test, X-ray photoelectron spectroscopic analysis and X-ray diffraction analysis is damaged including liquid silastic being carried out hydrophobicity measurement, the measurement of efflorescence layer thickness, the measurement of mirror luster degree, creepage trace and galvanic corrosion, and summary measurement result, it is judged that the ageing state of liquid silastic.The appraisal procedure of the present invention, its detection method is novel, testing result is directly perceived, easily grasped by power station maintainer, can judge to run the ageing state of power station equipment liquid silastic for many years accurately, and whether can adhere to running, repairing or change with this outer insulation jacket assessing power station equipment, it is effectively promoted the safe and stable operation of power system.
Description
Technical field
The present invention relates to power station equipment repair and maintenance field, be specifically related to that a kind of power station equipment liquid silastic is aging comments
Estimate method.
Background technology
Liquid silastic is a kind of more high-grade silicone rubber grown up since nineteen seventies, by ethylene
The additive reaction of radical siloxane and silicon hydrogen-based completes crosslinking, and molecular weight is little, and compound viscosity is low, it is easy to machine-shaping, both can be
Room temperature vulcanizing, it is also possible to improve temperature accelerated cure, compared with condensed type silicone rubber, it also has energy deep layer vulcanization, without secondary
Product, the features such as shrinkage factor is little.Liquid silastic viscosity is low, good fluidity, has and vulcanizes fast, pourable or injection molding spy
Point, the outer insulation jacket as equipment such as composite insulator, transformer, wall bushing, divider, spark gaps is extensive
In the transformer station and current conversion station of each electric pressure of power system.
During long-term hanging net operation, as the liquid silastic of outer insulation jacket by high field and environment
Light, heat, rain, filth etc. act on and occur aging, thus cause the outer insulation jacket of power station equipment hydrophobicity decline, full skirt occur
Variable color, hardening become fragile, efflorescence, cracking, creepage trace or the phenomenon such as galvanic corrosion damage, end seal inefficacy, had a strong impact on power station and set
Standby safe operation.Therefore, for guaranteeing the reliability service of power station equipment, it is necessary to explore a kind of to liquid silastic degree of aging
The method carrying out accurate evaluation.
Summary of the invention
It is an object of the invention to provide a kind of power station equipment liquid silastic aging assessment, for compound exhausted
The aging performance of the power station equipment liquid silastics such as edge, transformer, wall bushing, divider, spark gap carries out standard
Really assessment, processes in time according to its degree of aging or changes, it is ensured that the safe and stable operation of power station equipment.
For achieving the above object, the technical scheme is that
A kind of power station equipment liquid silastic aging assessment, for the liquid silastic external insulation to power station equipment
The ageing state of sheath is estimated, and comprises the steps:
Step one: use the surface hydrophobicity of water spray staging detection liquid silastic, hydrophobicity state is divided into seven grades,
Being expressed as HC1, HC2, HC3, HC4, HC5, HC6 and HC7, wherein HC1 is complete hydrophobicity, and HC7 is total hydrophilic；
Step 2: use finger gauge to measure the efflorescence layer thickness of liquid silastic；
Step 3: use vancometer to measure the mirror luster degree of liquid silastic；
Step 4: measure anti creepage trace and the galvanic corrosion damage performance of liquid silastic according to GB/T 6553；
Step 5: use X-ray photoelectron spectroscopic analysis to measure the phase of C, O and Si element within liquid silastic sample
To content；
Step 6: use the diffracting spectrum of X-ray diffraction analysis liquid silastic；
Then judge that the liquid silastic outer insulation jacket of power station equipment meets service requirement；
Step 7: assess the degree of aging of liquid silastic according to the test result of step one to step 6, by aging journey
Degree is divided into three grades:
1) first order is unaged, meets following five conditions:
1. hydrophobicity is HC1～HC2；
2. efflorescence layer thickness in surface is 0；
3. mirror luster degree is 60～75；
4. anti creepage trace performance is TMA 4.5；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si is 50% ± 2%；
6. diffracting spectrum is without sharp-pointed diffraction maximum；
Then judge that the liquid silastic outer insulation jacket of power station equipment meets service requirement；
2) second level is aging reparation, meets following five conditions:
1. hydrophobicity is HC3～HC5；
2. efflorescence layer thickness in surface is less than 0.3mm；
3. mirror luster degree is 20～30；
4. anti creepage trace performance is TMA 2.5；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si is 35%～40%；
6. top layer diffracting spectrum has sharp-pointed diffraction maximum, and internal diffracting spectrum is without sharp-pointed diffraction maximum；
Then judge that the liquid silastic outer insulation jacket of power station equipment is the most aging, need to carry out aging reparation；
3) third level is aging unrepairable, meets following five conditions
1. hydrophobicity is HC6～HC7；
2. efflorescence layer thickness in surface is more than 0.3mm；；
3. mirror luster degree is less than 10；
4. anti creepage trace performance is TMA 0；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si less than 30%；
6. top layer and internal diffracting spectrum all have sharp-pointed diffraction maximum；
Then judge the liquid silastic outer insulation jacket serious aging of power station equipment, should be replaced as early as possible.
The principle of the present invention is: the aging of liquid silastic refers to that be full of cracks, efflorescence and decortication occurs in liquid silastic surface
Phenomenon, it is aging is the process the most gradually developed from top layer, has the liquid silastic surface mirror of efflorescence layer to glossiness
Being remarkably decreased, along with the intensification of liquid silastic degree of aging, the Si-C key within liquid silastic there occurs oxidation reaction, O
Element relative amount increases, simultaneously the internal white carbon black filler of liquid silastic by inside after top layer separates out, X-ray diffraction analysis
The diffracting spectrum of liquid silastic has the absworption peak that white carbon black filler is sharp-pointed.
Compared with prior art, it has the beneficial effects that the present invention:
1, this method is measured by integrated use hydrophobicity, efflorescence layer thickness is measured, mirror luster degree is measured, creepage trace
And galvanic corrosion damage performance test, X-ray photoelectron spectroscopic analysis and X-ray diffraction analysis, assessment judges the aging of liquid silastic
State, its detection method is novel, and testing result is directly perceived, is easily grasped by power station maintainer；
2, this method can accurately judge to run the ageing state of power station equipment liquid silastic for many years, and comments with this
Whether the outer insulation jacket estimating power station equipment can adhere to running, repairing or change, and has been effectively promoted the peace of power system
Full stable operation.
Detailed description of the invention
Below in conjunction with detailed description of the invention, present disclosure is described in further details.
Embodiment:
A kind of power station equipment liquid silastic aging assessment, for the liquid silastic external insulation to power station equipment
The ageing state of sheath is estimated, and its evaluation process includes following step:
Step one: use the surface hydrophobicity of water spray staging detection liquid silastic, hydrophobicity state is divided into seven grades,
It is expressed as HC1 HC2 HC3 HC4 HC5 HC6 and HC7, the wherein corresponding optimal hydrophobicity of HC1, the corresponding worst hydrophobic of HC7
Property, i.e. total hydrophilic；
Step 2: use finger gauge to measure the efflorescence layer thickness of liquid silastic；
Step 3: use vancometer to measure the mirror luster degree of liquid silastic；
Step 4: measure anti creepage trace and the galvanic corrosion damage performance of liquid silastic according to GB/T 6553；
Step 5: use C, O within X-ray photoelectron spectroscopic analysis instrument for measuring liquid silicone rubber relative with Si element
Content；
Step 6: use the diffracting spectrum of X-ray diffraction analysis liquid silastic；
Step 7: assess the degree of aging of liquid silastic according to the test result of step one to step 6, by aging journey
Degree is divided into three grades:
1) first order is unaged, meets following five conditions:
1. hydrophobicity is HC1～HC2；
2. efflorescence layer thickness in surface is 0；
3. mirror luster degree is 60～75；
4. anti creepage trace performance is TMA 4.5；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si is 50% ± 2%；
6. diffracting spectrum is without sharp-pointed diffraction maximum；
Then judge that the liquid silastic outer insulation jacket of power station equipment meets service requirement；
2) second level is aging reparation, meets following five conditions:
1. hydrophobicity is HC3～HC5；
2. efflorescence layer thickness in surface is less than 0.3mm；
3. mirror luster degree is 20～30；
4. anti creepage trace performance is TMA 2.5；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si is 35%～40%；
6. top layer diffracting spectrum has sharp-pointed diffraction maximum, and internal diffracting spectrum is without sharp-pointed diffraction maximum；
Then judge that the liquid silastic outer insulation jacket of power station equipment is the most aging, need to carry out aging reparation；
3) third level is aging unrepairable, meets following five conditions
1. hydrophobicity is HC6～HC7；
2. efflorescence layer thickness in surface is more than 0.3mm；；
3. mirror luster degree is less than 10；
4. anti creepage trace performance is TMA 0；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si less than 30%；
6. top layer and internal diffracting spectrum all have sharp-pointed diffraction maximum；
Then judge the liquid silastic outer insulation jacket serious aging of power station equipment, should be replaced as early as possible.
The degree of aging of liquid silastic is divided into three grades by the appraisal procedure of the present invention, the most unaged, aging repaiies
Again with aging unrepairable, measure by the measurement of integrated use hydrophobicity, the measurement of efflorescence layer thickness, mirror luster degree, leak electricity
Performance test, X-ray photoelectron spectroscopic analysis and X-ray diffraction analysis are damaged in trace and galvanic corrosion, and assessment judges the old of liquid silastic
Change state, detection method is novel, and testing result is directly perceived, is easily grasped by power station maintainer.
Above-described embodiment simply to illustrate that the technology design of the present invention and feature, its objective is to be to allow in this area
Those of ordinary skill will appreciate that present disclosure and implements according to this, can not limit the scope of the invention with this.All
It is change or the modification of the equivalence that the essence according to present invention is made, all should contain within the scope of the present invention.
Claims (1)
1. a power station equipment liquid silastic aging assessment, for protecting the liquid silastic external insulation of power station equipment
The ageing state of set is estimated, it is characterised in that comprise the steps:
Step one: use the surface hydrophobicity of water spray staging detection liquid silastic, hydrophobicity state is divided into seven grades, respectively
Being expressed as HC1, HC2, HC3, HC4, HC5, HC6 and HC7, wherein HC1 is complete hydrophobicity, and HC7 is total hydrophilic；
Step 2: use finger gauge to measure the efflorescence layer thickness of liquid silastic；
Step 3: use vancometer to measure the mirror luster degree of liquid silastic；
Step 4: measure anti creepage trace and the galvanic corrosion damage performance of liquid silastic according to GB/T 6553；
Step 5: use X-ray photoelectron spectroscopic analysis to measure the relative amount of C, O and Si element within liquid silastic；
Step 6: use the diffracting spectrum of X-ray diffraction analysis liquid silastic；
Step 7: assess the degree of aging of liquid silastic according to the test result of step one to step 6, degree of aging is divided
It is three grades:
1) first order is unaged, meets following five conditions:
1. hydrophobicity is HC1～HC2；
2. efflorescence layer thickness in surface is 0；
3. mirror luster degree is 60～75；
4. anti creepage trace performance is TMA 4.5；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si is 50% ± 2%；
6. diffracting spectrum is without sharp-pointed diffraction maximum；
Then judge that the liquid silastic outer insulation jacket of power station equipment meets service requirement；
2) second level is aging reparation, meets following five conditions:
1. hydrophobicity is HC3～HC5；
2. efflorescence layer thickness in surface is less than 0.3mm；
3. mirror luster degree is 20～30；
4. anti creepage trace performance is TMA 2.5；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si is 35%～40%；
6. top layer diffracting spectrum has sharp-pointed diffraction maximum, and internal diffracting spectrum is without sharp-pointed diffraction maximum；
Then judge that the liquid silastic outer insulation jacket of power station equipment is the most aging, need to carry out aging reparation；
3) third level is aging unrepairable, meets following five conditions
1. hydrophobicity is HC6～HC7；
2. efflorescence layer thickness in surface is more than 0.3mm；；
3. mirror luster degree is less than 10；
4. anti creepage trace performance is TMA 0；
5. C element relative amount accounts for the toatl proportion of tri-kinds of elements of C, O, Si less than 30%；
6. top layer and internal diffracting spectrum all have sharp-pointed diffraction maximum；
Then judge the liquid silastic outer insulation jacket serious aging of power station equipment, should be replaced as early as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610633310.6A CN106248917A (en) | 2016-08-03 | 2016-08-03 | A kind of power station equipment liquid silastic aging assessment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610633310.6A CN106248917A (en) | 2016-08-03 | 2016-08-03 | A kind of power station equipment liquid silastic aging assessment |
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| CN106248917A true CN106248917A (en) | 2016-12-21 |
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Cited By (8)
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|---|---|---|---|---|
| CN107817258A (en) * | 2017-10-24 | 2018-03-20 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of liquid silastic degree of aging appraisal procedure based on the fitting of X ray diffracting spectrum swarming |
| CN108008269A (en) * | 2017-12-20 | 2018-05-08 | 国网江西省电力有限公司电力科学研究院 | A kind of method of SMC materials insulating part performance in evaluation high-tension switch cabinet |
| CN108267168A (en) * | 2017-12-20 | 2018-07-10 | 国网江西省电力有限公司电力科学研究院 | A kind of method of epoxy group insulating part performance in evaluation high-tension switch cabinet |
| CN109164036A (en) * | 2018-08-31 | 2019-01-08 | 国网陕西省电力公司电力科学研究院 | A kind of degree of aging of silastic material determines method and apparatus |
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| CN111474333A (en) * | 2020-03-18 | 2020-07-31 | 广东核电合营有限公司 | Method and device for evaluating rubber state of nuclear power station and computer storage medium |
| CN113238127A (en) * | 2021-05-06 | 2021-08-10 | 国网山东省电力公司电力科学研究院 | Composite insulator core rod aging characterization method based on three-dimensional multi-scale |
| CN114034632A (en) * | 2021-11-18 | 2022-02-11 | 广东电网有限责任公司广州供电局 | Method for measuring aging degree of silicon rubber material |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817258A (en) * | 2017-10-24 | 2018-03-20 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of liquid silastic degree of aging appraisal procedure based on the fitting of X ray diffracting spectrum swarming |
| CN107817258B (en) * | 2017-10-24 | 2020-01-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Liquid silicone rubber aging degree evaluation method based on X-ray diffraction spectrum peak-splitting fitting |
| CN108008269A (en) * | 2017-12-20 | 2018-05-08 | 国网江西省电力有限公司电力科学研究院 | A kind of method of SMC materials insulating part performance in evaluation high-tension switch cabinet |
| CN108267168A (en) * | 2017-12-20 | 2018-07-10 | 国网江西省电力有限公司电力科学研究院 | A kind of method of epoxy group insulating part performance in evaluation high-tension switch cabinet |
| CN109164036A (en) * | 2018-08-31 | 2019-01-08 | 国网陕西省电力公司电力科学研究院 | A kind of degree of aging of silastic material determines method and apparatus |
| CN109298006A (en) * | 2018-08-31 | 2019-02-01 | 全球能源互联网研究院有限公司 | A kind of evaluation method and device of Hydrophobicity of Composite Insulator and migration of hydrophobicity |
| CN111474333A (en) * | 2020-03-18 | 2020-07-31 | 广东核电合营有限公司 | Method and device for evaluating rubber state of nuclear power station and computer storage medium |
| CN113238127A (en) * | 2021-05-06 | 2021-08-10 | 国网山东省电力公司电力科学研究院 | Composite insulator core rod aging characterization method based on three-dimensional multi-scale |
| CN114034632A (en) * | 2021-11-18 | 2022-02-11 | 广东电网有限责任公司广州供电局 | Method for measuring aging degree of silicon rubber material |
| CN114034632B (en) * | 2021-11-18 | 2024-02-27 | 广东电网有限责任公司广州供电局 | Method for measuring ageing degree of silicone rubber material |
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