WO2006089420A2 - Procede et appareil d'enduction automatique d'isolateurs avec une composition siliconee - Google Patents

Procede et appareil d'enduction automatique d'isolateurs avec une composition siliconee Download PDF

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Publication number
WO2006089420A2
WO2006089420A2 PCT/CA2006/000268 CA2006000268W WO2006089420A2 WO 2006089420 A2 WO2006089420 A2 WO 2006089420A2 CA 2006000268 W CA2006000268 W CA 2006000268W WO 2006089420 A2 WO2006089420 A2 WO 2006089420A2
Authority
WO
WIPO (PCT)
Prior art keywords
component
coating
insulator
curing
composition
Prior art date
Application number
PCT/CA2006/000268
Other languages
English (en)
Other versions
WO2006089420A3 (fr
Inventor
Farooq Ahmed
Faisal Huda
Seraj Huda
John Barr
Steve Moss
Original Assignee
Csl Silicones Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Csl Silicones Inc. filed Critical Csl Silicones Inc.
Priority to EP06705223A priority Critical patent/EP1853393A4/fr
Priority to CN2006800005244A priority patent/CN101340983B/zh
Priority to JP2007556472A priority patent/JP4964786B2/ja
Publication of WO2006089420A2 publication Critical patent/WO2006089420A2/fr
Publication of WO2006089420A3 publication Critical patent/WO2006089420A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0235—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being a combination of rotation and linear displacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2518/00—Other type of polymers
    • B05D2518/10—Silicon-containing polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2530/00—Rubber or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
    • B05D3/0413—Heating with air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0486—Operating the coating or treatment in a controlled atmosphere

Definitions

  • TITLE METHOD AND APPARATUS FOR AUTOMATED COATING OF ELECTRICAL INSULATORS WITH A SILICONE COMPOSITION
  • the present invention is directed to an automated continuous coating apparatus and method and in particular, to a coating apparatus for coating components such as, high voltage line insulators with silicone rubber coatings, more particularly with one component room temperature vulcanizable (RTV) silicone rubber.
  • components such as, high voltage line insulators with silicone rubber coatings, more particularly with one component room temperature vulcanizable (RTV) silicone rubber.
  • RTV room temperature vulcanizable
  • insulators utilized in electrical utilities such as suspension insulators in high voltage power transmission lines are designed to keep to a minimum, current discharge under normal conditions.
  • leakage current can develop along the surface of the insulator. The amount of this leakage current depends upon the voltage stress and conductivity of the film or contaminant on the surface of the insulator.
  • the leakage currents can incur or cause arcing on the surface of the insulator which can have serious effects upon the insulator surface such as the formation of free carbon and non-volatile semiconductor materials. It may eventually result in a conducting path forming across the surface of the insulator and effectively shorting out the insulator.
  • the outer surface of the electrical insulator is the most important part of the insulator as this is the part that is subjected to the effects of electrical voltage stress, leakage currents and weathering.
  • the surface of the high voltage insulator When the surface of the high voltage insulator is exposed to moisture such as rain or fog in combination with contaminated atmospheres as are found in industrial locations, the surface may be subject to extensive corrosion unless protected in some way from exposure to the corrosive atmosphere.
  • Other potentially corrosive environments include along sea coasts where salt spray is found and in areas where agricultural chemicals are widely distributed.
  • RTV room temperature vulcanizable
  • the coating provides for improved insulation that is arc resistant, hydrophobic and resistant to the stresses imposed upon such electrical insulators. This results in increased tin of the insulator between scheduled maintenance as well as increased overall life of the insulator. Examples of such coatings are shown for example in the applicant's prior US patents and applications, specifically 6,833,407 issued December 21, 2004; 6,437,039 issued August 20, 2002; 5,326,804 issued July 5, 1994; 2004/0006169 published Jan. 8, 2004 and 2003/0113461 published June 19, 2003.
  • the present invention provides an automated continuous coating apparatus for coating industrial components such as porcelain, glass, and polymeric insulators with a silicone elastomeric coating.
  • the apparatus consists of a several stage continuous inline operation. The stages are a cleaning operation, followed by drying and heating, coating, and curing.
  • An aspect of the invention provides an apparatus for automatically coating an industrial component with a silicone elastomeric coating in a continuous inline operation, the apparatus comprising: a conveying means for holding the industrial component and moving the component through the automated apparatus; a cleaning station for cleaning the surfaces of the component; a drying and heating station to dry the surface of the cleaned component and heat the surface of the component to aid in adherence of a silicone elastomeric coating; a coating station to apply a coating of a curable silicone elastomeric composition on the exposed surfaces of the component; and a curing station to accelerate the curing of the silicone elastomeric composition.
  • Figure 1 is a schematic view of a first embodiment of a continuous coating apparatus of the present invention
  • Figure 2 is a perspective view of a preferred embodiment of the conveying apparatus of the present invention.
  • Figure 3 is a perspective view of a preferred embodiment of a spray nozzle arrangement for coating of the present invention.
  • the present invention is directed to an automated continuous coating apparatus for coating industrial components such as porcelain, glass or polymeric insulators with a silicone coating composition.
  • the apparatus consists of a several stage continuous inline operation as illustrated in Figure 1.
  • the first stage of the apparatus is cleaning and set up for ensuring that the surface of the insulator is free from any materials such as oils, grease, dust or other soils which may interfere with the adherence of the silicone coating to the insulator surface.
  • the cleaning of the insulator may be accomplished by any of the methods commonly utilized, such as steam cleaning, hot water spray, hot water blasts, solvent wiping or dry ice blasting.
  • the cleaning operation utilizes either steam cleaning or hot water blasting.
  • detergent and other washing aids may be added to the cleaning solutions to help in the removal of organic materials or other soils from the surface of the insulator.
  • the insulator Once the insulator has been cleaned, it then passes to a drying and heating apparatus where any moisture remaining on the insulator is evaporated in this apparatus.
  • the apparatus moves heated air across the surface of the insulator to improve the drying and heating. Most preferably this is accomplished by the use of a hot air blower blowing air at approximately 40° C to 150 °C, preferably 40 °C to 80 °C, more preferably about 60 °C through the apparatus.
  • the insulator is also heated to a desired temperature level. This heating of the insulator aids in the application and curing of the silicone composition to the surface of the insulator .
  • the insulator Once the insulator has been dried and heated, it passes through a coating apparatus in which the surface of the insulator is coated with a uniform coating of a silicone composition.
  • the silicone composition is preferably as taught in our previous patents and applications, specifically 6,833,407 issued December 21, 2004; 6,437,039 issued August 20, 2002; 5,326,804 issued July
  • This coating may be accomplished by many different processes.
  • the coating is applied by a dip coating wherein the insulator is dipped in a bath of silicone material to allow the material to cover and adhere to the surface of the insulator.
  • the insulator may be rotated at a speed sufficient to provide for the desired coating level on the insulator surface.
  • the viscosity of the silicone composition is also controlled to allow the composition to coat the entire surface of the insulator.
  • the dipping area is maintained under a nitrogen atmosphere to avoid skinning of the surface of the silicone composition.
  • the silicone composition may also be applied to the surface of the insulator by a spray means. This may be accomplished utilizing one or more spray nozzles directing the composition at the surface of the insulator to coat the surface with the uniform coating of the composition.
  • the insulator may be rotated such that the spray of the composition from the nozzle coats the entire surface of the insulator. More preferably, in order to coat both the upper and lower surfaces of the insulator, at least two nozzles are provided in the spray apparatus, one above the path of the insulator through the apparatus, and one below the path of the insulator through the apparatus.
  • a robotic apparatus utilizing a single spray nozzle programmed to spray the exposed surfaces of the insulator may be utilized.
  • the silicone coating is then allowed to cure.
  • the coated insulator is placed in a curing chamber, such as an oven for one part RTV silicone coatings, to decrease the amount of time required for the coating to cure.
  • a curing chamber or oven is maintained at approximately 60 °C with 70-80% relative humidity.
  • the oven is provided with a suitable radiation source, for example UV lighting to initiate and accelerate the curing. In these applications, the oven may also be supplied with a nitrogen atmosphere.
  • a flash oven with an explosion proof chamber is provided prior to the curing chamber to remove the volatile components .
  • the standard curing time is greatly reduced. For example, the standard curing time of several hours for a one-part RTV silicone is reduced to less than one hour. This allows the insulator to have an improved quality and consistency of the coating thickness combined with an increased hourly production rate of coated insulators to cut down the production costs significantly.
  • the automated coating line of the present invention utilizes a conveyor system to move the insulators through each of the stages of the operation.
  • the conveying apparatus utilized also allows for rotation of the insulator through the stages to allow for uniform treatment of the surface of the insulator as described above. In one embodiment, this is accomplished by providing a rotating means to rotate the insulators at a slow rate such as an electric motor as illustrated in Figure 2.
  • the insulator is releasably clamped to the rotation means to which holds onto the insulator during its motion through these stages of the coating apparatus .
  • the electric motors and clamps are disposed along a conveyor means to move through the stages of the apparatus .
  • a dual-speed belt or chain drive such that the clamp for the insulator is connected to a gear driven simultaneously by the two belts or chains as the belts or chains are travelling at different rates of speed in the same direction.
  • the gear and attached insulator rotates as it moves along the line.
  • each of the cleaning and coating stations are provided with robotic spray apparatus, it may not be necessary to rotate the insulators throughout the apparatus .
  • the conveying apparatus moves the insulators along at a speed of approximately 5 metres per minute while rotating the insulators at a rotation speed of 12 revolutions per minute.
  • the insulator is washed in the washing station for approximately 1 minute followed by 1 minute drying time.
  • the insulator is then coated in the spray booth for about 5 seconds before travelling to the curing chamber in which it is heated at 6O 0 C for 20 minutes to cure the coating on the insulator.
  • the insulator is then wrapped in the packaging.
  • the apparatus of the present invention allows for a high throughput coating of electrical insulators with a throughput of approximately 500 insulators coated for every hour of operation. This results in significant labour and cost savings for coating of the high voltage insulators.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Insulating Bodies (AREA)
  • Paints Or Removers (AREA)
  • Glass Compositions (AREA)
  • Coating Apparatus (AREA)
  • Spray Control Apparatus (AREA)

Abstract

La présente invention concerne un appareil automatique d'enduction en continu permettant d'enduire des composants industriels tels que des isolateurs en porcelaine, en verre et en polymères. L'appareil est capable d'un fonctionnement continu en ligne en plusieurs postes. Les postes sont le lavage, suivi du séchage et chauffage, enduction, et prise.
PCT/CA2006/000268 2005-02-25 2006-02-27 Procede et appareil d'enduction automatique d'isolateurs avec une composition siliconee WO2006089420A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06705223A EP1853393A4 (fr) 2005-02-25 2006-02-27 Procede et appareil d'enduction automatique d'isolateurs avec une composition siliconee
CN2006800005244A CN101340983B (zh) 2005-02-25 2006-02-27 使用硅氧烷组合物自动涂覆电气绝缘体的方法和装置
JP2007556472A JP4964786B2 (ja) 2005-02-25 2006-02-27 シリコーン組成物で電気絶縁体を自動的にコーティングする方法及び装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US65589305P 2005-02-25 2005-02-25
US60/655,893 2005-02-25

Publications (2)

Publication Number Publication Date
WO2006089420A2 true WO2006089420A2 (fr) 2006-08-31
WO2006089420A3 WO2006089420A3 (fr) 2007-11-08

Family

ID=36927779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2006/000268 WO2006089420A2 (fr) 2005-02-25 2006-02-27 Procede et appareil d'enduction automatique d'isolateurs avec une composition siliconee

Country Status (5)

Country Link
EP (1) EP1853393A4 (fr)
JP (1) JP4964786B2 (fr)
CN (1) CN101340983B (fr)
CA (1) CA2537740C (fr)
WO (1) WO2006089420A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112934571A (zh) * 2021-03-08 2021-06-11 秦顺华 一种钢结构喷涂系统的干燥辅助设备及干燥方法
CN113275204A (zh) * 2020-03-19 2021-08-20 安泰科技股份有限公司 一种用于非晶纳米晶带材连续涂覆绝缘涂层的设备及方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102806173A (zh) * 2011-05-30 2012-12-05 张家港市佳龙真空浸漆设备制造厂 改进了流平装置的真空压力浸漆集群设备
CN102806175A (zh) * 2011-06-02 2012-12-05 张家港市佳龙真空浸漆设备制造厂 改进了预热系统的真空压力浸漆集群设备
CN104941851B (zh) * 2014-03-26 2018-07-20 安川（中国）机器人有限公司 清洗机器人系统及清洗方法和涂装机器人系统及涂装方法
CN104941884B (zh) * 2014-03-26 2018-03-30 安川（中国）机器人有限公司 一种涂装方法和涂装系统
WO2016127509A1 (fr) * 2015-02-11 2016-08-18 成都拓利科技股份有限公司 Procédé d'application de revêtement pour revêtement éclair anti-salissure rtv d'isolateur en forme de parapluie/cloche

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US5326804A (en) 1991-02-01 1994-07-05 Balwantrai Mistry Organopolysiloxane rubber composition for coating high voltage electrical insulators having improved electrical properties
US6437039B1 (en) 1999-08-20 2002-08-20 Csl Silicones Inc. One-part organopolysiloxane rubber composition for use as a protection coating
US20030113461A1 (en) 2001-12-14 2003-06-19 Farooq Ahmed Coated composite high voltage electrical insulator
US6833407B1 (en) 2003-10-16 2004-12-21 Csl Silicones Inc. Solvent free silicone coating composition

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US6437039B1 (en) 1999-08-20 2002-08-20 Csl Silicones Inc. One-part organopolysiloxane rubber composition for use as a protection coating
US20030113461A1 (en) 2001-12-14 2003-06-19 Farooq Ahmed Coated composite high voltage electrical insulator
US20040006169A1 (en) 2001-12-14 2004-01-08 Farooq Ahmed Coated composite high voltage electrical insulator
US6833407B1 (en) 2003-10-16 2004-12-21 Csl Silicones Inc. Solvent free silicone coating composition

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See also references of EP1853393A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113275204A (zh) * 2020-03-19 2021-08-20 安泰科技股份有限公司 一种用于非晶纳米晶带材连续涂覆绝缘涂层的设备及方法
CN112934571A (zh) * 2021-03-08 2021-06-11 秦顺华 一种钢结构喷涂系统的干燥辅助设备及干燥方法

Also Published As

Publication number Publication date
CN101340983A (zh) 2009-01-07
EP1853393A2 (fr) 2007-11-14
CA2537740A1 (fr) 2006-08-25
JP2008532216A (ja) 2008-08-14
CN101340983B (zh) 2012-03-28
WO2006089420A3 (fr) 2007-11-08
CA2537740C (fr) 2013-05-07
EP1853393A4 (fr) 2011-01-05
JP4964786B2 (ja) 2012-07-04

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