CN103545750A - Method for repairing composite insulator testing sampling part - Google Patents
Method for repairing composite insulator testing sampling part Download PDFInfo
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- CN103545750A CN103545750A CN201310452467.5A CN201310452467A CN103545750A CN 103545750 A CN103545750 A CN 103545750A CN 201310452467 A CN201310452467 A CN 201310452467A CN 103545750 A CN103545750 A CN 103545750A
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Abstract
The invention discloses a method for repairing a composite insulator testing sampling part. The method includes: cleaning the composite insulator testing sampling part, evenly coating RTV coatings on the composite insulator testing sampling part, and curing the RTV coatings coated on the composite insulator testing sampling part at normal temperature. The method has the advantages that the RTV coatings are used to repair the surface of the composite insulator testing sampling part, and a new surface with excellent performance can be formed on a composite insulator; the dielectric constants of the RTV coatings and the materials of the composite insulator are identical, the two are even in electric field distribution, and local electric field intensity concentration can be avoided; by the RTV coatings, the repaired composite insulator is excellent in hydrophobicity and hydrophobicity mobility, and safe and stable operation of the composite insulator is guaranteed; the repairing of the composite insulator can be performed without shutting down power supply, the problem that traditional composite insulator replacement needs to shut down power supply is solved, power failure caused by line maintenance can be avoided, and operation reliability of a power grid is increased.
Description
Technical field
The invention belongs to composite insulator recovery technique field, relate in particular to a kind of method that composite insulator test sampling part is repaired.
Background technology
For operating composite insulator is carried out to assessment in useful life, need carry out a series of test to the cluster parachute surface of composite insulator, existing patented invention a kind of compound inslation sub-surface sample collection dedicated tool, utilize this cutter can be easily Pass Test requires from the cutting of composite insulator cluster parachute surface charged in the situation that test piece (area is 5cm*5cm, and thickness is 2mm).But after sampling, a larger area defect appears in compound inslation sub-surface, can not meet the requirement of normal operation, need to change or maintenance.
Summary of the invention
The invention provides a kind of method that composite insulator test sampling part is repaired, be intended to solve after the sampling of compound inslation sub-surface sample collection, there is a larger area defect in compound inslation sub-surface, make composite insulator can not meet the requirement of normal operation, need the problem of replacing or maintenance.
The object of the present invention is to provide a kind of method that composite insulator test sampling part is repaired, the method comprises the following steps:
Step 1, tests sampling point by composite insulator and cleans out;
After utilizing compound inslation sub-surface sample collection dedicated tool to insulator surface sampling, can form tiny burr in sampling place, need with wallpaper cutter burr removing, with sand paper, sampling point is polished in addition, make sampling point surface more smooth, increase sampling surface and be newly coated with the conjugation of RTV.
Step 2, is coated in composite insulator test sampling point equably by RTV coating;
Before executing figure, reply RTV coating makes a service test and needs to meet following specification requirement
Electric property
(1) specific insulation is not less than 1 * 1012 Ω m.
(2) relative dielectric constant ε r is not more than 4.0; Dielectric loss angle tangent tg δ is not more than 0.4%.
(3) dielectric strength E is not less than 18kV/mm.
(4) proof tracking and electric erosion resistance are not less than TMA4.5 level.
(5) colloidal state disruptive field intensity is not less than 15kV;
Physicochemical property
(1) hot strength (tensile strength) is not less than 4.0Mpa; Elongation at break is not less than 250%.
(2) tearing strength (tear strength): be not less than 9.0kN/m.
(3) the bonding tensile shear strength of anti-pollution flashover and enamel or glass surface is not less than 3.0MPa.
(4) should there is liquid anti-flaming function, and anti-flammability is FV-0 level.
Under following meteorological condition, can carry out repair:
(1) hazing, condensation, precipitation, snowfall etc. may cause forbidding under the construction period insulator surface meteorological condition of making moist repair;
(2) should not under serious airborne dust condition, construct;
(3) ambient temperature of construction period should 0 ℃ and more than.
Meet after above condition, with brush (bristle is about 5cm, and brush width is less than 5cm), dip RTV coating, brush equably at sampling point, in brushing process, answer uniform speed slow, allow coating fully contact with sampling point, avoid producing bubble.
Step 3, will be coated in the RTV coating normal temperature cure of composite insulator test sampling point.
At temperature 0-20 ℃, under relative humidity 40%～70%RH condition, the RTV paint solidification time is not less than 72 hours, and coating after solidifying is smooth, smooth, even, without bubble, without phenomenons such as wire drawings, occurs.
The method that composite insulator test sampling part is repaired provided by the invention, first composite insulator being tested to sampling point cleans out, then RTV coating is coated in equably to composite insulator test sampling point, finally will be coated in the RTV coating normal temperature cure of composite insulator test sampling point, the present invention adopts RTV coating that composite insulator sampling point is carried out to surface and repairs, on composite insulator, form the surface of a new excellent performance, RTV coating is identical with original composite insulator material dielectric constant, Electric Field Distribution is even, can not cause the concentration phenomenon of local electric field strength, because RTV coating has excellent hydrophobicity and the animal migration of surging, composite insulator after reparation also has excellent hydrophobicity and the animal migration of surging, can ensure that composite insulator continues safe and stable operation, reduced electric grid investment, changed the composite insulator processing that need have a power failure in the past, and the repair of composite insulator can chargedly be carried out, avoided causing the power failure to power supply user because of the service work of circuit, improved the reliability of operation of power networks.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the method that composite insulator test sampling part is repaired that provides of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, and be not used in restriction invention.
Fig. 1 shows the realization flow of the method that composite insulator test sampling part is repaired that the embodiment of the present invention provides.
The method comprises the following steps:
Step S101, tests sampling point by composite insulator and cleans out;
After utilizing compound inslation sub-surface sample collection dedicated tool to insulator surface sampling, can form tiny burr in sampling place, need with wallpaper cutter burr removing, with sand paper, sampling point is polished in addition, make sampling point surface more smooth, increase sampling surface and be newly coated with the conjugation of RTV.
Step S102, is coated in composite insulator test sampling point equably by RTV coating;
Before executing figure, reply RTV coating makes a service test and needs to meet following specification requirement
Electric property
(1) specific insulation is not less than 1 * 1012 Ω m.
(2) relative dielectric constant ε r is not more than 4.0; Dielectric loss angle tangent tg δ is not more than 0.4%.
(3) dielectric strength E is not less than 18kV/mm.
(4) proof tracking and electric erosion resistance are not less than TMA4.5 level.
(5) colloidal state disruptive field intensity is not less than 15kV;
Physicochemical property
(1) hot strength (tensile strength) is not less than 4.0Mpa; Elongation at break is not less than 250%.
(2) tearing strength (tear strength): be not less than 9.0kN/m.
(3) the bonding tensile shear strength of anti-pollution flashover and enamel or glass surface is not less than 3.0MPa.
(4) should there is liquid anti-flaming function, and anti-flammability is FV-0 level.
Under following meteorological condition, can carry out repair:
(1) hazing, condensation, precipitation, snowfall etc. may cause forbidding under the construction period insulator surface meteorological condition of making moist repair;
(2) should not under serious airborne dust condition, construct;
(3) ambient temperature of construction period should 0 ℃ and more than.
Meet after above condition, with brush (bristle is about 5cm, and brush width is less than 5cm), dip RTV coating, brush equably at sampling point, in brushing process, answer uniform speed slow, allow coating fully contact with sampling point, avoid producing bubble.
Step S103, will be coated in the RTV coating normal temperature cure of composite insulator test sampling point.
At temperature 0-20 ℃, under relative humidity 40%～70%RH condition, the RTV paint solidification time is not less than 72 hours, and coating after solidifying is smooth, smooth, even, without bubble, without phenomenons such as wire drawings, occurs.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
The present invention proposes a kind of method that composite insulator test sampling part is repaired, use RTV coating (normal temperature cure silicon rubber) that sampling point is filled and repaired, after RTV paint solidification and the main body composition of composite insulator indifference almost, sampling point at composite insulator is coated with one deck RTV coating, can form the compound inslation sub-surface of a new excellent performance.Because composition is similar, therefore new RTV coating is identical with original composite insulator material dielectric constant, and Electric Field Distribution is even, can not cause the concentration phenomenon of local electric field strength.Because RTV coating has excellent hydrophobicity and the animal migration of surging, the composite insulator after therefore repairing also has excellent hydrophobicity and the animal migration of surging, and can ensure that composite insulator continues safe and stable operation.
The method that composite insulator test sampling part is repaired that the embodiment of the present invention provides, first composite insulator being tested to sampling point cleans out, then RTV coating is coated in equably to composite insulator test sampling point, finally will be coated in the RTV coating normal temperature cure of composite insulator test sampling point, the present invention adopts RTV coating that composite insulator sampling point is carried out to surface and repairs, on composite insulator, form the surface of a new excellent performance, RTV coating is identical with original composite insulator material dielectric constant, Electric Field Distribution is even, can not cause the concentration phenomenon of local electric field strength, because RTV coating has excellent hydrophobicity and the animal migration of surging, composite insulator after reparation also has excellent hydrophobicity and the animal migration of surging, can ensure that composite insulator continues safe and stable operation, reduced electric grid investment, changed the composite insulator processing that need have a power failure in the past, and the repair of composite insulator can chargedly be carried out, avoided causing the power failure to power supply user because of the service work of circuit, improved the reliability of operation of power networks.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. a method of composite insulator test sampling part being repaired, is characterized in that, the method comprises the following steps:
Step 1, tests sampling point by composite insulator and cleans out;
After utilizing compound inslation sub-surface sample collection dedicated tool to insulator surface sampling, can form tiny burr in sampling place, need with wallpaper cutter burr removing, with sand paper, sampling point is polished in addition, make sampling point surface more smooth, increase sampling surface and be newly coated with the conjugation of RTV.
Step 2, is coated in composite insulator test sampling point equably by RTV coating;
Before executing figure, reply RTV coating makes a service test and needs to meet following specification requirement
Electric property
(1) specific insulation is not less than 1 * 1012 Ω m.
(2) relative dielectric constant ε r is not more than 4.0; Dielectric loss angle tangent tg δ is not more than 0.4%.
(3) dielectric strength E is not less than 18kV/mm.
(4) proof tracking and electric erosion resistance are not less than TMA4.5 level.
(5) colloidal state disruptive field intensity is not less than 15kV;
Physicochemical property
(1) hot strength (tensile strength) is not less than 4.0Mpa; Elongation at break is not less than 250%.
(2) tearing strength (tear strength): be not less than 9.0kN/m.
(3) the bonding tensile shear strength of anti-pollution flashover and enamel or glass surface is not less than 3.0MPa.
(4) should there is liquid anti-flaming function, and anti-flammability is FV-0 level.
Under following meteorological condition, can carry out repair:
(1) hazing, condensation, precipitation, snowfall etc. may cause forbidding under the construction period insulator surface meteorological condition of making moist repair;
(2) should not under serious airborne dust condition, construct;
(3) ambient temperature of construction period should 0 ℃ and more than.
Meet after above condition, with brush (bristle is about 5cm, and brush width is less than 5cm), dip RTV coating, brush equably at sampling point, in brushing process, answer uniform speed slow, allow coating fully contact with sampling point, avoid producing bubble.
Step 3, will be coated in the RTV coating normal temperature cure of composite insulator test sampling point.
At temperature 0-20 ℃, under relative humidity 40%～70%RH condition, the RTV paint solidification time is not less than 72 hours, and coating after solidifying is smooth, smooth, even, without bubble, without phenomenons such as wire drawings, occurs.
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| CN201310452467.5A CN103545750A (en) | 2013-09-26 | 2013-09-26 | Method for repairing composite insulator testing sampling part |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922811A (en) * | 2014-04-15 | 2014-07-16 | 醴陵市阳东电瓷电器有限公司 | Repair method of electroceramic ceramic pieces |
| CN106323820A (en) * | 2016-11-17 | 2017-01-11 | 武汉大学 | Method for testing hydrophobicity of vulcanizing silicone rubber coating field sampling samples |
| WO2017071082A1 (en) * | 2015-10-27 | 2017-05-04 | 清华大学深圳研究生院 | Method for repairing holes caused by galvanic corrosion on surface of liquid silicone rubber sheath shed |
| CN106941244A (en) * | 2017-05-17 | 2017-07-11 | 成都清威科技有限公司 | A kind of switch cubicle insulation restorative procedure |
| CN107196246A (en) * | 2017-06-01 | 2017-09-22 | 中国神华能源股份有限公司 | Silicon rubber insulator restorative procedure |
| CN113571269A (en) * | 2021-08-11 | 2021-10-29 | 国网陕西省电力公司电力科学研究院 | Composite insulator umbrella skirt sample for constant electric marking voltage method test and sample preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012038736A (en) * | 2011-09-27 | 2012-02-23 | Asahi Electric Works Ltd | Insulation cover and its mounting structure |
| CN103219111A (en) * | 2013-03-27 | 2013-07-24 | 河北硅谷化工有限公司 | Repairing method for silicon rubber casing pipe ageing |
-
2013
- 2013-09-26 CN CN201310452467.5A patent/CN103545750A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012038736A (en) * | 2011-09-27 | 2012-02-23 | Asahi Electric Works Ltd | Insulation cover and its mounting structure |
| CN103219111A (en) * | 2013-03-27 | 2013-07-24 | 河北硅谷化工有限公司 | Repairing method for silicon rubber casing pipe ageing |
Non-Patent Citations (1)
| Title |
|---|
| 吴亚光、叶廷路、高骏、张锐: "《中华人民共和国电力行业标准DL/T 627-2012-绝缘子用常温固化硅橡胶防污闪涂料》", 6 April 2012, 中国电力出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922811A (en) * | 2014-04-15 | 2014-07-16 | 醴陵市阳东电瓷电器有限公司 | Repair method of electroceramic ceramic pieces |
| WO2017071082A1 (en) * | 2015-10-27 | 2017-05-04 | 清华大学深圳研究生院 | Method for repairing holes caused by galvanic corrosion on surface of liquid silicone rubber sheath shed |
| CN106323820A (en) * | 2016-11-17 | 2017-01-11 | 武汉大学 | Method for testing hydrophobicity of vulcanizing silicone rubber coating field sampling samples |
| CN106941244A (en) * | 2017-05-17 | 2017-07-11 | 成都清威科技有限公司 | A kind of switch cubicle insulation restorative procedure |
| CN107196246A (en) * | 2017-06-01 | 2017-09-22 | 中国神华能源股份有限公司 | Silicon rubber insulator restorative procedure |
| CN113571269A (en) * | 2021-08-11 | 2021-10-29 | 国网陕西省电力公司电力科学研究院 | Composite insulator umbrella skirt sample for constant electric marking voltage method test and sample preparation method thereof |
| CN113571269B (en) * | 2021-08-11 | 2022-09-27 | 国网陕西省电力公司电力科学研究院 | Composite insulator umbrella skirt sample for constant electric marking voltage method test and sample preparation method thereof |
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Application publication date: 20140129 |