CN105251737B - A kind of method that dry type removes the Ageing of Insulators RTV coating - Google Patents
A kind of method that dry type removes the Ageing of Insulators RTV coating Download PDFInfo
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- CN105251737B CN105251737B CN201510768064.0A CN201510768064A CN105251737B CN 105251737 B CN105251737 B CN 105251737B CN 201510768064 A CN201510768064 A CN 201510768064A CN 105251737 B CN105251737 B CN 105251737B
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- power density
- laser
- rtv coating
- rtv
- density threshold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulators (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
A kind of method that dry type removes the Ageing of Insulators RTV coating, comprises the following steps：(1) size, shape and RTV coating layer thickness, use time and the RTV material composition of insulator are determined；(2) parameter being determined according to step (1), determine removing power density threshold and the damage power density threshold of laser output, wherein said power density threshold of removing is the minimum power density that can remove RTV coating to be cleaned, described damage power density threshold is the maximum power density that the insulator surface that described RTV coating to be cleaned covers can be born during laser emission, beyond this maximum power density by Damage to insulation sublist face；(3) the removing power density threshold determining according to step (2) and damage power density threshold, adjust the power setting of laser instrument, and output laser is scanned to insulator surface.The method on the premise of not damaging insulator surface, efficiently can easily remove the aging RTV coating of insulator surface.
Description
Technical field
The present invention relates to a kind of method that dry type removes the Ageing of Insulators RTV coating.
Background technology
The good external insulation state of transmission line of electricity is the important leverage of safe operation of power system.(closed with composite insulator
Become insulator), creeping-increasing skirt and silastic material that room temperature vulcanized silicone rubber coating (RTV coating) is representative outside power system absolutely
After a large amount of use in edge field, the resistance to pollution flashover ability of external insulation equipment just significantly improves.
RTV antifouling flush paint is coated in the surface of electroceramics or glass insulator, makes hydrophilic surface originally be changed into hydrophobic
Property, the pollution flashover voltage of insulator can be significantly improved.RTV coating as high-molecular organic material, in long-term outdoor service condition
Affected by highfield, ultraviolet, cold and hot temperature change down, the effect such as acid-rain corrosion, can inevitably occur aging, occur
Peeling, efflorescence, fade, come off, hydrophobicity decline etc. degradation phenomena, thus affecting its antifouling work effect.If in filth relatively
The area of weight, RTV coating can stand more serious test, and such as near cement plant, the run time of 2-3 is just sufficient so that RTV
Coating lost efficacy.Therefore, if taking measures not in time to be processed, will make electric transmission line isolator that the probability of pollution flashover occurs
Greatly increase, the serious safe operation threatening electrical network.RTV overcoating is the effective means repairing aging RTV coating, is being changed without absolutely
Improve its antifouling property on the basis of edge, ensure that the operation safety of power system.Therefore, old when finding that coating occurs
When change, hydraulic performance decline, for ensureing the safe operation of electrical network, need again to coat RTV coating in insulator surface.DL/T 627—
2012《Prospect on RTV of Solidified Silicon Rubber in Normal Temperature for Insulator》Regulation, when carrying out overcoating to the RTV coating losing efficacy, needs to remove
Coating surface is filthy or thoroughly removes the row overcoating again of RTV coating.The removing of RTV coating mainly has chemical method and physical method
Two kinds.
Currently in order to removing RTV coating, need using strong acid, bases chemical reagent, or other special organic coatings,
Often the harm to human body is larger, live application difficult, and the method that physics strikes off easily scratch insulator surface.Therefore existing
In still not efficient easily site technology method.
Content of the invention
Present invention is primarily targeted at overcoming the deficiencies in the prior art, a kind of dry type is provided to remove the Ageing of Insulators RTV
The method of coating, on the premise of guaranteeing not damage insulator surface, the efficiently convenient aging RTV removing insulator surface applies
Material.
For achieving the above object, the present invention employs the following technical solutions：
A kind of method that dry type removes the Ageing of Insulators RTV coating, comprises the following steps：
(1) size, shape and RTV coating layer thickness, use time and the RTV material composition of insulator are determined；
(2) parameter being determined according to step (1), determines removing power density threshold and the damage power density of laser output
Threshold value, wherein said removing power density threshold is the minimum power density that can remove RTV coating to be cleaned, described damage
Hinder the maximum that the insulator surface that power density threshold is that described RTV coating to be cleaned covers can be born during laser emission
Power density, beyond this maximum power density by Damage to insulation sublist face；
(3) the removing power density threshold determining according to step (2) and damage power density threshold, adjust the work(of laser instrument
Rate is arranged, and output laser is scanned to insulator surface.
Further：
The described size determining insulator, shape, the diameter including the upper and lower surface determining insulator and its curved surface wheel
Wide data.
Described determination RTV material composition includes determining the inorganic filler that it contains has which component and its proportion of composing.
The described range of choice removing power density threshold is 500-2000W/cm2, described damage power density threshold
The range of choice is 1500-5000W/cm2.
In step (3), the scope selected from 300nm～10.64 μm of optical maser wavelength, laser power control is less than 500W
Scope, defocusing amount controls the scope in -100mm～+100mm, and the scanning speed of laser controls the scope in 1-10mm/s, swashs
Light is controlled in the scope less than 10 ° with the angle of insulator surface normal direction.
The power of described laser instrument can be adjusted according to scene needs.
Described laser instrument is selected from Nd:YAG pulse laser, CO2 continuous wave laser, optical fiber laser and semiconductor laser
One of.
Step (3) includes, and detects whether the insulator surface through laser scanning normal insulation in scanning process
The color on surface, or whether burnt trace, black speck or crackle occur；If there is the color in normal insulation sublist face, terminate scanning；
If there is burnt trace, black speck or crackle, then the power density that laser exports is turned down.
Further comprising the steps of：
(4) pass through blowing plant, the residue producing after laser scanning is removed.
Beneficial effects of the present invention：
The present invention is directed to on-plane surface many curved surfaces labyrinth of power transmission and transforming equipment insulator, and the high energy using laser beam is special
Point, directly removes, from insulator surface, the RTV coating running for many years, and particularly, the present invention passes through to determine size, the shape of insulator
Shape and RTV coating layer thickness, use time and RTV material composition, using these parameters, determined sharp before laser scanning
The removing power density threshold of light output and damage power density threshold, thus the removing of aging RTV coating can effectively be implemented,
Again be avoided that destroy insulator surface, for again apply RTV coating provide greatly convenient.The present invention can effectively overcome always
Change paint adhesion is strong, the feature of easy-clear and additive method complex process are not difficult to the live shortcoming implemented, thorough, safety
RTV coating is removed on ground so that coating material is easier to coat.
Specific embodiment
Hereinafter embodiments of the present invention are elaborated.It is emphasized that what the description below was merely exemplary,
Rather than in order to limit the scope of the present invention and its application.
In one embodiment, a kind of method that dry type removes the Ageing of Insulators RTV coating, comprises the following steps：
(1) size, shape and RTV coating layer thickness, use time and the RTV material composition of insulator are determined；
(2) parameter being determined according to step (1), determines removing power density threshold and the damage power density of laser output
Threshold value, wherein said removing power density threshold is the minimum power density that can remove RTV coating to be cleaned, described damage
Hinder the maximum that the insulator surface that power density threshold is that described RTV coating to be cleaned covers can be born during laser emission
Power density, beyond this maximum power density by Damage to insulation sublist face；
(3) the removing power density threshold determining according to step (2) and damage power density threshold, adjust the work(of laser instrument
Rate is arranged, and exports laser, and controls sweep time and scanning speed, insulator surface is scanned.
In a preferred embodiment, size, the shape of insulator are determined described in step (1), including determination insulator
The diameter on upper and lower surface and its curved surface profile data.
In a preferred embodiment, determine described in step (1) that RTV material composition includes determining the inorganic filler that it contains
There are which component and its proportion of composing.
In a preferred embodiment, the described range of choice removing power density threshold is 500-2000W/cm2, described damage
The range of choice hindering power density threshold is 1500-5000W/cm2.
In the especially preferred embodiments, in step (3), the scope selected from 300nm～10.64 μm of optical maser wavelength, swashs
In the scope less than 500W, defocusing amount controls the scope in -100mm～+100mm, the scanning speed of laser to optical power control
Control the scope in 1-10mm/s, to be laser controlled with the angle of insulator surface normal direction is not surpassing by the angle of incidence of laser
Cross 10 ° of scope.
Preferably, the laser instrument being adjusted according to scene needs using laser output power, thus facilitate scanned
It is adjusted in journey.Described laser instrument can be selected from Nd:YAG pulse laser, CO2 continuous wave laser, optical fiber laser and half
One of conductor laser.
In addition, available fiber transmission laser in step (3), it is equipped with the aptitude manners such as robot simultaneously, realizes more free
Operation and remote-controlled operation, realize complex-curved coating and remove.
In a preferred embodiment, step (3) includes, and detects that the insulator surface through laser scanning is in scanning process
The no color that normal insulation sublist face occurs, or whether burnt trace, black speck or crackle occur；If there is normal insulation sublist face
Color, terminate scanning；If there is burnt trace, black speck or crackle, then the power density that laser exports is turned down.
In certain embodiments, following cleanup step can also be included after step (3) is scanned：
(4) pass through blowing plant, the residue producing after laser scanning is disposed.
Above content is to further describe it is impossible to recognize with reference to concrete/preferred embodiment made for the present invention
Determine the present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, it can also make some replacements or modification to the embodiment that these have described that,
And these substitute or variant all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. a kind of dry type removes the method for the Ageing of Insulators RTV coating it is characterised in that comprising the following steps：
(1) size, shape and RTV coating layer thickness, use time and the RTV material composition of insulator are determined, described determination is absolutely
The size of edge, shape, including determine insulator upper and lower surface diameter with its curved surface profile data, described determination RTV material
Material composition includes determining the inorganic filler that it contains has which component and its proportion of composing；
(2) parameter being determined according to step (1), determines removing power density threshold and the damage power density threshold of laser output
Value, wherein said power density threshold of removing is the minimum power density that can remove RTV coating to be cleaned, described damage
Power density threshold is the maximum work that the insulator surface that described RTV coating to be cleaned covers can be born during laser emission
Rate density, beyond this maximum power density by Damage to insulation sublist face；
(3) the removing power density threshold determining according to step (2) and damage power density threshold, the power adjusting laser instrument sets
Put, output laser is scanned to insulator surface.
2. dry type as claimed in claim 1 removes the method for the Ageing of Insulators RTV coating it is characterised in that described removing work(
The range of choice of rate density threshold is 500-2000W/cm2, the range of choice of described damage power density threshold is 1500-
5000W/cm2.
3. the dry type as described in any one of claim 1 to 2 removes the method for the Ageing of Insulators RTV coating it is characterised in that walking
Suddenly in (3), the scope selected from 300nm～10.64 μm of optical maser wavelength, laser power control in the scope less than 500W, from
Burnt amount controls the scope in -100mm～+100mm, and the scanning speed of laser controls the scope in 1-10mm/s, laser and insulation
The angle of sublist face normal direction controls in the scope less than 10 °.
4. dry type as described in any one of claim 1 to 2 removes the method for the Ageing of Insulators RTV coating it is characterised in that institute
The power stating laser instrument can be adjusted according to scene needs.
5. dry type as described in any one of claim 1 to 2 removes the method for the Ageing of Insulators RTV coating it is characterised in that institute
State laser instrument and be selected from Nd:One of YAG pulse laser, CO2 continuous wave laser, optical fiber laser and semiconductor laser.
6. the dry type as described in any one of claim 1 to 2 removes the method for the Ageing of Insulators RTV coating it is characterised in that walking
Suddenly (3) include, and detect whether the insulator surface through laser scanning the color in normal insulation sublist face in scanning process,
Or whether burnt trace, black speck or crackle occur；If there is the color in normal insulation sublist face, terminate scanning；If there is Jiao
Trace, black speck or crackle, then turn down the power density that laser exports.
7. the dry type as described in any one of claim 1 to 2 removes the method for the Ageing of Insulators RTV coating it is characterised in that going back
Comprise the following steps：
(4) pass through blowing plant, the residue producing after laser scanning is removed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510768064.0A CN105251737B (en) | 2015-11-11 | 2015-11-11 | A kind of method that dry type removes the Ageing of Insulators RTV coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510768064.0A CN105251737B (en) | 2015-11-11 | 2015-11-11 | A kind of method that dry type removes the Ageing of Insulators RTV coating |
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| Publication Number | Publication Date |
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| CN105251737A CN105251737A (en) | 2016-01-20 |
| CN105251737B true CN105251737B (en) | 2017-03-08 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807693A (en) * | 2017-02-14 | 2017-06-09 | 南通大学 | A kind of laser clears up the method and apparatus of electric power system insulator |
| CN108994003A (en) * | 2018-08-21 | 2018-12-14 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of remove device and sweep-out method of insulator surface PRTV |
| CN109623138A (en) * | 2018-11-28 | 2019-04-16 | 深圳供电局有限公司 | The treating method and apparatus of composite material surface |
| CN109848141B (en) * | 2019-01-14 | 2022-01-11 | 中国电力科学研究院有限公司 | Insulator RTV coating laser cleaning method and device |
| CN111014185B (en) * | 2019-11-06 | 2022-03-15 | 株洲国创轨道科技有限公司 | Method and device for cleaning paint by laser |
| CN112038021B (en) * | 2020-08-24 | 2022-05-24 | 广东冠能电力科技发展有限公司 | Aging RTV (real time kinematic) removing method for repairing anti-pollution flashover coating of power equipment |
| CN112495946A (en) * | 2020-11-27 | 2021-03-16 | 广东电网有限责任公司 | Insulator cleaning system and method based on three-dimensional imaging and real-time distance measurement |
| CN112574673B (en) * | 2020-11-30 | 2022-03-25 | 中国电力科学研究院有限公司武汉分院 | Auxiliary agent for removing waste coating by laser |
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| DE3767890D1 (en) * | 1986-02-14 | 1991-03-14 | Amoco Corp | TREATMENT OF SHAPED SURFACES WITH ULTRAVIOLET LASER. |
| US5281798A (en) * | 1991-12-24 | 1994-01-25 | Maxwell Laboratories, Inc. | Method and system for selective removal of material coating from a substrate using a flashlamp |
| GB0315947D0 (en) * | 2003-07-08 | 2003-08-13 | Spectrum Technologies Plc | Laser removal of layer or coating from a substrate |
| CN100455397C (en) * | 2004-01-14 | 2009-01-28 | 臼井国际产业株式会社 | Method for removing resin layer from resin-coated metal tube |
| CN102164461A (en) * | 2011-03-09 | 2011-08-24 | 深圳市大族激光科技股份有限公司 | Device and method for degumming in SMT (surface mounting technology) industry |
| CN103170746A (en) * | 2011-12-26 | 2013-06-26 | 富泰华工业（深圳）有限公司 | Coating removing device and coating removing method thereof |
| CN103433243B (en) * | 2013-08-16 | 2016-08-17 | 广东电网公司电力科学研究院 | Insulator surface aging RTV coating sweep-out method and device |
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