CN105067761A - Silicone rubber insulating material hydrophobicityhydrophobicity transfertestingmethod - Google Patents
Silicone rubber insulating material hydrophobicityhydrophobicity transfertestingmethod Download PDFInfo
- Publication number
- CN105067761A CN105067761A CN201510428549.5A CN201510428549A CN105067761A CN 105067761 A CN105067761 A CN 105067761A CN 201510428549 A CN201510428549 A CN 201510428549A CN 105067761 A CN105067761 A CN 105067761A
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- Prior art keywords
- measuring cup
- dirt
- silicone rubber
- filth
- hydrophobicity
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 17
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 14
- 239000011810 insulating material Substances 0.000 title abstract 2
- 239000012212 insulator Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000012153 distilled water Substances 0.000 claims abstract description 12
- 238000010998 test method Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 4
- 238000013508 migration Methods 0.000 claims description 20
- 230000005012 migration Effects 0.000 claims description 20
- 239000012774 insulation material Substances 0.000 claims description 13
- 230000008595 infiltration Effects 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 10
- 239000007921 spray Substances 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 238000009736 wetting Methods 0.000 abstract 2
- 238000005303 weighing Methods 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920000260 silastic Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a silicone rubber insulating material hydrophobicity transfer testing method, and the technology of the methodis characterized in that: obtaining dirt capable of accurately representing surface state of an insulator in the field; carrying out a pretreatment for insulator surface dirt obtained on the spot ofa laboratory, removing comparatively large particles in the dirty, andtaking dirt of a specific weight; pouring a certain amount of distilled water into a measuring cup and uniformly spreading the dirt of the specific weight on the surface of water in the measuring cup and timing, and recording a dirt wetting time till all the dirt is wetted by distilled water and sinks to the bottom of the measuring cup; determining a hydrophobicity transfer grade of theinsulator surface according to the wetting time of dirt. The invention has a reasonable design,insulators during operation are not needed to be pickeddown, thereby reducing workload and safety risk during test. The test equipment in use is simple, only a timer, an electronic weighing device, a measuring cup and distilled water are needed. Compared with atraditional test method (water spray grading method), the test result has a good consistency and is credible.
Description
Technical field
The invention belongs to silicon rubber migration of hydrophobicity technical field of measurement and test, especially a kind of silicone rubber insulation material migration of hydrophobicity method of testing.
Background technology
External insulation pollution flashover problem is that one of safe operation of power system threatens greatly always.Silicon rubber compound insulator and RTV antifouling flush paint show excellent antifouling property because of its migration of hydrophobicity, be widely used in China's electrical network.But along with the growth of working time, the continuous deposition aging and filthy gradually of silastic material can make the decline of insulator surface hydrophobic nature even lose, and directly causes its resistant level greatly to decline.Therefore, the key parameter that the migration of hydrophobicity running composite insulator and RTV coating for many years judges as state evaluation and degree of aging, has important Research Significance.
At present, the migration of hydrophobicity on test silicon rubber insulation material surface mainly adopts water spray stage method (HC stage method) and Static Contact horn cupping, the thinking of these two kinds of methods is contacted with large-area filth by a small amount of water, the power of migration of hydrophobicity is judged according to the degree of mixing of two kinds of materials, but, above two kinds of methods all need the operation insulator with filth to take from circuit to deliver to testing laboratory and test, affect the normal operation of electrical network on the one hand, in the process winning insulator, also bring higher security risk on the other hand.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of reasonable in design, method is easy and the silicone rubber insulation material migration of hydrophobicity method of testing that test accuracy is high.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of silicone rubber insulation material migration of hydrophobicity method of testing, comprises the following steps:
Step 1, obtaining at the scene can the filth of accurate representation insulator surface state;
Step 2, in laboratory, pre-service is carried out to the pollution severity of insulators that scene obtains, remove the larger particles in filth, and take quantitative filth;
Step 3, in measuring cup, pour a certain amount of distilled water into and to be evenly scattered in quantitatively filthy in measuring cup and timing along the water surface, until when all filths are distilled water infiltration and sink down at the bottom of measuring cup cup, the infiltrating time that record is filthy;
Step 4, judge the hydrophobicity migration performance rank of insulator surface according to the infiltrating time of filth.
And the concrete grammar of described step 1 is: the condition selecting fair weather and air humidity to be less than 60%, gets operation pollution severity of insulators with hairbrush brush, be loaded in closed container.
And the environmental requirement in described laboratory is: room temperature is 25 DEG C, relative humidity is 40%.
And the diameter of described measuring cup is greater than 10cm.
And described quantitative filth is 10g, distilled water is 500ml.
Advantage of the present invention and good effect are:
The present invention is from the essence of silicone rubber insulation material migration of hydrophobicity, obtain filthy from insulator surface, a small amount of filth is contacted with large-area water, and the power of silicone rubber insulation material migration of hydrophobicity is judged according to the infiltration degree of filth, operation insulator can be won, reduce the workload in test and security risk; The testing equipment used is simple, only needs timer, electronic weigher, measuring cup and distilled water; Test result and conventional test methodologies (water spray stage method) consistance are better, genuine and believable.
Accompanying drawing explanation
Fig. 1 is test philosophy figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is further described:
A kind of silicone rubber insulation material migration of hydrophobicity method of testing, as shown in Figure 1, comprises the following steps:
Step 1, obtaining at the scene can the filth of accurate representation insulator surface state.
Select fair weather, under air humidity is not more than the condition of 60%, get operation pollution severity of insulators with hairbrush brush, be loaded in closed container (such as, polybag), characterize the state of insulator surface.
Step 2, in laboratory, pre-service is carried out to the pollution severity of insulators that scene obtains, remove filthy in the larger particles such as gravel, and it is for subsequent use to take 10g, and laboratory keeps room temperature 25 DEG C, the state of relative humidity 40%.
Step 3, be not less than 10cm at diameter measuring cup in pour 500ml distilled water into, to be evenly scattered in filthy for 10g in measuring cup and timing along the water surface, until when all filths are distilled water infiltration and sink down at the bottom of measuring cup cup, the infiltrating time that record is filthy.
Step 4, judge the tax increase migration performance rank of insulator surface according to the infiltrating time of filth.
According to a large amount of contrast tests, the present invention and traditional water spray analytic approach (HC method) have good consistance, and corresponding result is as shown in the table:
Table 1 infiltrating time is corresponding with HC classification to be shown
| Filthy infiltrating time (hour) | HC classification |
| 0—2 | 7 |
| 2-6 | 6 |
| 6-12 | 5 |
| 12-24 | 4 |
| 24-48 | 3 |
| 48-72 | 2 |
| More than 72 | 1 |
It is emphasized that; embodiment of the present invention is illustrative; instead of it is determinate; therefore the present invention includes the embodiment be not limited to described in embodiment; every other embodiments drawn by those skilled in the art's technical scheme according to the present invention, belong to the scope of protection of the invention equally.
Claims (5)
1. a silicone rubber insulation material migration of hydrophobicity method of testing, is characterized in that comprising the following steps:
Step 1, obtaining at the scene can the filth of accurate representation insulator surface state;
Step 2, in laboratory, pre-service is carried out to the pollution severity of insulators that scene obtains, remove the larger particles in filth, and take quantitative filth;
Step 3, in measuring cup, pour a certain amount of distilled water into and to be evenly scattered in quantitatively filthy in measuring cup and timing along the water surface, until when all filths are distilled water infiltration and sink down at the bottom of measuring cup cup, the infiltrating time that record is filthy;
Step 4, judge the hydrophobicity migration performance rank of insulator surface according to the infiltrating time of filth.
2. a kind of silicone rubber insulation material migration of hydrophobicity method of testing according to claim 1, it is characterized in that: the concrete grammar of described step 1 is: select the condition that fair weather and air humidity are less than 60%, get operation pollution severity of insulators with hairbrush brush, be loaded in closed container.
3. a kind of silicone rubber insulation material migration of hydrophobicity method of testing according to claim 1, it is characterized in that: the environmental requirement in described laboratory is: room temperature is 25 DEG C, relative humidity is 40%.
4. a kind of silicone rubber insulation material migration of hydrophobicity method of testing according to claim 1, is characterized in that: the diameter of described measuring cup is greater than 10cm.
5. a kind of silicone rubber insulation material migration of hydrophobicity method of testing according to claim 1, it is characterized in that: described quantitative filth is 10g, distilled water is 500ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510428549.5A CN105067761B (en) | 2015-07-21 | 2015-07-21 | A kind of silicone rubber insulation material migration of hydrophobicity method of testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510428549.5A CN105067761B (en) | 2015-07-21 | 2015-07-21 | A kind of silicone rubber insulation material migration of hydrophobicity method of testing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105067761A true CN105067761A (en) | 2015-11-18 |
| CN105067761B CN105067761B (en) | 2016-08-24 |
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|---|---|---|---|
| CN201510428549.5A Active CN105067761B (en) | 2015-07-21 | 2015-07-21 | A kind of silicone rubber insulation material migration of hydrophobicity method of testing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248917A (en) * | 2016-08-03 | 2016-12-21 | 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 power station equipment liquid silastic aging assessment |
| CN106489709A (en) * | 2016-10-20 | 2017-03-15 | 清华大学深圳研究生院 | A kind of method for cultivating algae on composite insulating material surface |
| CN106769819A (en) * | 2016-12-06 | 2017-05-31 | 哈尔滨理工大学 | A kind of filthy aging testing method of silicon rubber insulator |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1295906A1 (en) * | 2001-09-20 | 2003-03-26 | Degussa AG | Silicone rubber formulations containing hydrophobic silica |
| CN202101865U (en) * | 2011-06-30 | 2012-01-04 | 天津市电力公司 | Electrified sampling tool for detecting hydrophobicity migration performance of silicon rubber external-insulation electric appliance |
| CN103196799A (en) * | 2013-04-10 | 2013-07-10 | 国家电网公司 | RTV (Room Temperature Vulcanization silicone rubber) hydrophobicity testing device |
| CN203849074U (en) * | 2014-05-29 | 2014-09-24 | 国家电网公司 | Room temperature curing silicone rubber (RTV) sample surface contaminant application oscillator |
-
2015
- 2015-07-21 CN CN201510428549.5A patent/CN105067761B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1295906A1 (en) * | 2001-09-20 | 2003-03-26 | Degussa AG | Silicone rubber formulations containing hydrophobic silica |
| CN202101865U (en) * | 2011-06-30 | 2012-01-04 | 天津市电力公司 | Electrified sampling tool for detecting hydrophobicity migration performance of silicon rubber external-insulation electric appliance |
| CN103196799A (en) * | 2013-04-10 | 2013-07-10 | 国家电网公司 | RTV (Room Temperature Vulcanization silicone rubber) hydrophobicity testing device |
| CN203849074U (en) * | 2014-05-29 | 2014-09-24 | 国家电网公司 | Room temperature curing silicone rubber (RTV) sample surface contaminant application oscillator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248917A (en) * | 2016-08-03 | 2016-12-21 | 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 power station equipment liquid silastic aging assessment |
| CN106489709A (en) * | 2016-10-20 | 2017-03-15 | 清华大学深圳研究生院 | A kind of method for cultivating algae on composite insulating material surface |
| CN106769819A (en) * | 2016-12-06 | 2017-05-31 | 哈尔滨理工大学 | A kind of filthy aging testing method of silicon rubber insulator |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105067761B (en) | 2016-08-24 |
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Effective date of registration: 20190910 Address after: 300457 days Tianjin Binhai New Area, Tianjin Eco-city, No. 126 Animation and Animation Center C Zone 209 (TG 750) Co-patentee after: State Grid Tianjin Electric Power Company Patentee after: State Grid (Tianjin) Integrated Energy Services Co., Ltd. Co-patentee after: State Grid Corporation of China Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Co-patentee before: State Grid Corporation of China Patentee before: State Grid Tianjin Electric Power Company |
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