CN108088771A - A kind of composite insulator water spray staging of optimization - Google Patents
A kind of composite insulator water spray staging of optimization Download PDFInfo
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- CN108088771A CN108088771A CN201711210684.8A CN201711210684A CN108088771A CN 108088771 A CN108088771 A CN 108088771A CN 201711210684 A CN201711210684 A CN 201711210684A CN 108088771 A CN108088771 A CN 108088771A
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- insulator
- water
- contact angle
- staging
- hydrophobic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
Abstract
The invention discloses a kind of composite insulator water spray staging of optimization, method includes the following steps：It takes out the insulator test piece of immersion more than 96h and whole branch insulator, same time of drying in the shade in identical environment in pure water and obtains the identical insulator test piece of hydrophobic state and whole branch insulator.Utilize the static contact angle and dynamic contact angle of contact angle method measurement insulator test piece；It is sprayed water using water mist watering can to whole branch insulator surface, obtained hydrophobic grade hydrophobic grade corresponding with contact angle is matched, establishes correspondence by observation insulator surface droplet/moisture film state diagram；According to correspondence, the hydrophobic grade of insulator to be measured is determined.The method of the present invention, it is easy to operate, facilitate Site Detection, laboratory apparatus is few, easy to operate, and accurately, reliable hydrophobic level data reference can be provided for artificial pollution test.
Description
Technical field
The present invention relates to power equipment performance detection field, more particularly to a kind of measurement for detecting Hydrophobicity of Composite Insulator
Method.
Background technology
With super, UHV transmission line rapid development, electric system proposes the external insulation performance of power equipment
Higher requirement.Silicon rubber compound insulator shows to be much better than due to its excellent hydrophobicity the antifouling of porcelain and glass insulator
Performance is dodged, is widely used in transmission line of electricity.However as the extension of run time, the continuous aging of silastic material is hated
The influence of the complicated factors such as the continuous volatilization of aqueous small molecule and local environment continuously decreases the hydrophobicity of composite insulator
It even completely loses, huge hidden danger is brought to the safe operation of power grid.The composite insulator of different operation phase is hated
Aqueous detection just seems very necessary, it can help operations staff to understand the anti-fouling flashover performance of composite insulator to do in time
Go out corresponding counter-measure.
The measuring method of Hydrophobicity of Composite Insulator mainly has contact angle method, surface tension method and water spray staging at present.
Contact angle method is usually the liquid for directly measuring sample surfaces, and liquid often with water, droplet is being stood to when no longer spreading, is being measured
Its static contact angle analyzes the hydrophobic state on trial target surface layer by the size of measurement angle；Contact angle method can only be to shape
Simple plane plate specimen is tested, when carrying out Contact-angle measurement to composite insulator string, it is necessary to cut fritter full skirt or shield
Set needs stringent test environment as sample, and test equipment is complicated, and in-site measurement is inconvenient.In addition, to filthy sample
When carrying out hydrophobicity measurement, droplet is present with the phenomenon that contact angle is sluggish.Surface tension method few people use, and measurement is filthy
It is still necessary to further examine for the feasibility of sample and the cumulative effect that repeatedly measures.Staging of spraying water operation is relatively simple, convenient
Site Detection can test the material test product of simple shape or carry out non-destructive to actual motion insulator
Test, thus be able to obtain extensive use in the hydrophobicity evaluation of operation composite insulator.But existing water spray staging is still
Not perfect, water spray is uneven, and classification results are relatively low compared to contact angle method accuracy obtained by artificial subjective judgement, easily go out
Situation about now judging by accident.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of composite insulator water spray classifications of optimization
Method.
The technical solution used in the present invention is：
A kind of composite insulator water spray staging of optimization, includes the following steps：
1) take out and the insulator test piece of more than 96h and whole branch insulator are impregnated in pure water, dry in the shade in identical environment
Same time obtains the identical insulator test piece of hydrophobic state and whole branch insulator；
2) static contact angle and dynamic contact angle of contact angle method measurement insulator test piece are utilized；
3) sprayed water using water mist watering can to insulator surface, observation insulator surface droplet/moisture film state diagram, will
To hydrophobic grade hydrophobic grade corresponding with contact angle match, establish correspondence；
4) according to correspondence, the hydrophobic grade of insulator to be measured is determined.
As being further improved for above-mentioned composite insulator water spray staging, the time that water mist watering can is sprayed water every time is 3s.
As being further improved for above-mentioned composite insulator water spray staging, the number of water spray is 15 times, water spray interval 1~
2s。
As being further improved for above-mentioned composite insulator water spray staging, the nozzle of water mist watering can and the distance of test product are
15cm。
As being further improved for above-mentioned composite insulator water spray staging, the nozzle of water mist watering can and the inclination angle of test product are
45°。
As being further improved for above-mentioned composite insulator water spray staging, observation is taken pictures to determine within 15s after water spray
Hydrophobicity.
As being further improved for above-mentioned composite insulator water spray staging, observation is taken pictures to determine within 15s after water spray
Hydrophobicity.
Be further improved as above-mentioned composite insulator water spray staging, the water fog particle size that watering can sprays for 10~
30μm。
The beneficial effects of the invention are as follows：
The method of the present invention, it is easy to operate, facilitate Site Detection, laboratory apparatus is few, easy to operate, and can be that artificial pollution tries
Testing offer, accurately, reliable hydrophobic level data refers to.
Description of the drawings
Fig. 1 is that water spraying time is respectively 1s, 3s, 5s, surface of composite insulator image when 7s, 10s；
Fig. 2 is to take water spray number surface of composite insulator image when being respectively 15,30,45,60,90 times；
Fig. 3 be by the angle set of nozzle and test product be 30 °, 45 °, 60 °, 90 ° when surface of composite insulator image.
Specific embodiment
Below in conjunction with specific insulator artificial pollution test example and form and attached drawing, to the optimization method of the present invention into
Row elaborates, but the implementation of the present invention is not limited to this.
Artificial pollution test's method in this example comprises the following steps：
HC stagings determine hydrophobic grade
1) six insulator test pieces are cut from whole branch insulator, test piece and whole branch insulator are impregnated in pure water
More than 96h, to destroy insulator surface hydrophobicity；
2) take out the test piece in impregnating and whole branch insulator, same time of drying in the shade in identical environment obtain hydrophobic state phase
Same insulator test piece and whole branch insulator；
3) using the static contact angle and dynamic contact angle of contact angle method measurement insulator test piece, by contact angle and hydrophobic etc.
Relation between grade HC1-HC7 obtains the hydrophobic grade of test piece.
Water spraying time determines：
To the whole branch insulator after drying in the shade, water spray is characterized by setting water spraying time (second) and water spray number, is sprayed water
Time is respectively 1s, 3s, 5s, 7s, 10s, and after unification is sprayed water 15 times, surface is photographed to record in 15 seconds, records result
See Fig. 1.
The results show that when water spraying time is 3s, droplet is of moderate size, and particle is more uniform.Whole branch insulation sublist at this time
The droplet in face/moisture film state, closest 3) middle gained hydrophobic grade.Water spraying time 3s is selected as optimal water spraying time.
Water spray number determines：
To the whole branch insulator after drying in the shade, spray water 3s every time, takes different water spray numbers, is respectively 15,30,45,60,90
Secondary, spray water 3s every time, 1~2s of water spray interval, and surface is photographed to record in 15 seconds after unified water spray, records that the result is shown in Fig. 2.
The results show that when water spray number is 15 times, droplet is of moderate size, and particle is more uniform.Whole branch insulator at this time
The droplet on surface/moisture film state, closest 3) middle gained hydrophobic grade.Selection sprays water 15 times and is preferred water spray number.
Nozzle is determined with test product spacing：
To the whole branch insulator after drying in the shade, spray water 3s every time, sprays water 15 times, every time 1~2s of water spray interval, nozzle and test product
Distance be respectively 5cm, 10cm, 15cm, 20cm, 25cm.It was found that when the distance of nozzle and test product is 15cm,.Whole branch is exhausted at this time
The droplet in edge sublist face/moisture film state, closest 3) middle gained hydrophobic grade.
Nozzle is determined with test product inclination angle：
To the whole branch insulator after drying in the shade, spray water 3s every time, sprays water 15 times, every time 1~2s of water spray interval, nozzle and test product
Distance be 15cm.It it is respectively 30 °, 45 °, 60 °, 90 ° by the angle set of nozzle and test product.To table in 15 seconds after unified water spray
Face is photographed to record, and records that the result is shown in Fig. 3.From the result of Fig. 3 can be seen that inclination angle for 45 ° when, droplet is of moderate size,
Particle is more uniform.The droplet of whole branch insulator surface/moisture film state at this time, closest 3) middle gained hydrophobic grade.45 ° are
Optimum angle of incidence.
Observing time determines：
It is observed after water spray at 15 seconds, 30 seconds, 60 seconds and after five minutes and takes pictures and judge the hydrophobic grade of insulator.By each group
Gained hydrophobic grade is compared with result in step 3), wherein closest one group is chosen, as the optimal viewing time.
Embodiment：
It takes out and the test piece of more than 96h and whole branch insulator, same time of drying in the shade in identical environment is impregnated in pure water
Obtain the identical insulator test piece of hydrophobic state and whole branch insulator.Utilize the Static Contact of contact angle method measurement insulator test piece
Angle and dynamic contact angle；Fine mist watering can (spraying granule size is 10~30 μm) is selected to carry out the surface of whole branch insulator
Water spray, each water spraying time are 3s, and the distance of nozzle and test product is 15cm, and the inclination angle of nozzle and test product is 45 °, continuously sprays 15
It is secondary.It takes pictures after water spray in 15s, hydrophobicity is determined according to photo.Experimental result is as shown in Table 1 and Table 2.
Table 1, experiment gained static contact angle and hydrophobic grade corresponding table
Table 2, experiment gained dynamic contact angle and hydrophobic grade corresponding table
Experimental result discovery, pair of hydrophobic grade and contact angle obtained by the composite insulator water spray staging that the present invention optimizes
It should be related to that contact angle range corresponding with each hydrophobic grade that existing research institute obtains is completely the same.
The hydrophobic grade and contact angle method that the composite insulator water spray staging that the present invention optimizes determines have good phase
It is not accurate enough to overcome conventional water spray staging by Guan Xing, it is difficult to the deficiency of accurate definite insulator hydrophobicity.
The above, only an example as patent of the present invention, but the protection domain of patent of the present invention is not limited to
This, any one skilled in the art is in the scope disclosed in patent of the present invention, the skill of patent according to the present invention
Art scheme and its inventive concept are subject to equivalent substitution or change, all within protection scope of the present invention.
Claims (7)
1. a kind of composite insulator water spray staging of optimization, includes the following steps：
1) take out and the insulator test piece of more than 96h and whole branch insulator are impregnated in pure water, dry in the shade in identical environment identical
Time obtains the identical insulator test piece of hydrophobic state and whole branch insulator；
2) static contact angle and dynamic contact angle of contact angle method measurement insulator test piece are utilized；
3) sprayed water using water mist watering can to whole branch insulator surface, observation insulator surface droplet/moisture film state diagram, will
To hydrophobic grade hydrophobic grade corresponding with contact angle match, establish correspondence；
4) according to correspondence, the hydrophobic grade of insulator to be measured is determined.
The staging 2. composite insulator according to claim 1 is sprayed water, it is characterised in that：Water mist watering can spray water every time when
Between be 3s.
The staging 3. composite insulator according to claim 2 is sprayed water, it is characterised in that：The number of water spray is 15 times, spray
1~2s of water spacer.
The staging 4. composite insulator according to claim 2 is sprayed water, it is characterised in that：The nozzle and test product of water mist watering can
Distance be 15cm.
The staging 5. composite insulator according to claim 4 is sprayed water, it is characterised in that：The nozzle and test product of water mist watering can
Inclination angle be 45 °.
The staging 6. composite insulator according to claim 5 is sprayed water, it is characterised in that：It takes pictures after water spray within 15s sight
It examines to determine hydrophobicity.
The staging 7. composite insulator according to claim 6 is sprayed water, it is characterised in that：The water fog particle that watering can sprays is big
Small is 10~30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210684.8A CN108088771A (en) | 2017-11-28 | 2017-11-28 | A kind of composite insulator water spray staging of optimization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711210684.8A CN108088771A (en) | 2017-11-28 | 2017-11-28 | A kind of composite insulator water spray staging of optimization |
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| CN108088771A true CN108088771A (en) | 2018-05-29 |
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| CN201711210684.8A Pending CN108088771A (en) | 2017-11-28 | 2017-11-28 | A kind of composite insulator water spray staging of optimization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474080A (en) * | 2020-04-22 | 2020-07-31 | 国网河南淅川县供电公司 | Method for detecting hydrophobicity of in-use insulator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980838A (en) * | 2012-12-19 | 2013-03-20 | 航天科工深圳（集团）有限公司 | Method for detecting hydrophobicity of insulator |
| JP2014180824A (en) * | 2013-03-19 | 2014-09-29 | Seiko Epson Corp | Liquid jetting device |
| CN106769683A (en) * | 2016-12-02 | 2017-05-31 | 河南宏博测控技术有限公司 | A kind of hydrophobicity analysis system |
| CN107345901A (en) * | 2017-06-02 | 2017-11-14 | 国网天津市电力公司 | A kind of RTV antifouling flush paints service life synthetic determination method |
| CN207114374U (en) * | 2017-07-19 | 2018-03-16 | 国家电网公司 | A kind of Hydrophobicity of Composite Insulator level images detection image detection device |
-
2017
- 2017-11-28 CN CN201711210684.8A patent/CN108088771A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980838A (en) * | 2012-12-19 | 2013-03-20 | 航天科工深圳（集团）有限公司 | Method for detecting hydrophobicity of insulator |
| JP2014180824A (en) * | 2013-03-19 | 2014-09-29 | Seiko Epson Corp | Liquid jetting device |
| CN106769683A (en) * | 2016-12-02 | 2017-05-31 | 河南宏博测控技术有限公司 | A kind of hydrophobicity analysis system |
| CN107345901A (en) * | 2017-06-02 | 2017-11-14 | 国网天津市电力公司 | A kind of RTV antifouling flush paints service life synthetic determination method |
| CN207114374U (en) * | 2017-07-19 | 2018-03-16 | 国家电网公司 | A kind of Hydrophobicity of Composite Insulator level images detection image detection device |
Non-Patent Citations (1)
| Title |
|---|
| 赵卉 等: "《中华人民共和国国家标准GB/T24622-2009/IEC/TS62073：2003》", 30 November 2009, 中国标准出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474080A (en) * | 2020-04-22 | 2020-07-31 | 国网河南淅川县供电公司 | Method for detecting hydrophobicity of in-use insulator |
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Application publication date: 20180529 |