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WO2013078681A1 - Isolant composite et son utilisation - Google Patents

Isolant composite et son utilisation Download PDF

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Publication number
WO2013078681A1
WO2013078681A1 PCT/CN2011/083385 CN2011083385W WO2013078681A1 WO 2013078681 A1 WO2013078681 A1 WO 2013078681A1 CN 2011083385 W CN2011083385 W CN 2011083385W WO 2013078681 A1 WO2013078681 A1 WO 2013078681A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
composite insulator
thermoplastic material
insulator according
insulation tube
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2011/083385
Other languages
English (en)
Inventor
Chun Li
Jiansheng Chen
Huigang Sun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Research Ltd Switzerland
Original Assignee
ABB Research Ltd Switzerland
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 ABB Research Ltd Switzerland filed Critical ABB Research Ltd Switzerland
Priority to PCT/CN2011/083385 priority Critical patent/WO2013078681A1/fr
Publication of WO2013078681A1 publication Critical patent/WO2013078681A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/47—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes fibre-reinforced plastics, e.g. glass-reinforced plastics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
    • H01B17/325—Single insulators consisting of two or more dissimilar insulating bodies comprising a fibre-reinforced insulating core member

Definitions

  • the present invention relates to the field of a high voltage technology, and more particularly, relates to a composite insulation and use thereof.
  • a composite insulator is a common insulating component wildly used for the electrical equipment such as the bushing for the transformers, the circuit breakers, the instrument transformers, the power transformers, the cable terminations, the surge arresters, the gas insulated switchgear (GIS) and so on.
  • the composite insulator can be designed for high voltage application both in outdoor service and indoor service.
  • FIG. 1A and 1 B A traditional composite insulator is illustrated in Fig. 1A and 1 B.
  • the composite insulator 100 generally comp ses an insulation tube 101 for bearing mechanical loads and elastic sheds 102 for a purpose of protection. Additionally, the composite insulator 100 also comp ses metal end fittings 103, 104 respectively provided at each end thereof for connecting to other devices.
  • the insulation tube 102 is hollow, which can be seen from Fig. 1 B, for a conductor running therethrough.
  • the insulation tube 102 is made of, for example, glass fiber-reinforced plastics (GFRP), the sheds are made of elastic material such as silicone rubber, and the metal end fittings are made of for example aluminum.
  • GFRP glass fiber-reinforced plastics
  • the sheds are made of elastic material such as silicone rubber
  • the metal end fittings are made of for example aluminum.
  • epoxy resin has advantages of high electrical stresses and reliable mechanical performance and thus, in the prior art the epoxy resin is usually used as the matrix system for the insulation tube.
  • the main processing approach of GFRP is wet filament winding technique where the continuous fibers are drawn through a bath of epoxy resin and then wound onto a mandrel at a controlled pre-stress.
  • such a processing is extremely complex and costly, and moreover the output rate is very low.
  • the present invention has proposed a solution for improving the composite insulator in the art so as to solve or at least partially mitigate at least a part of problems in the prior art.
  • thermoplastic material can be fiber reinforced thermoplastic material.
  • the fiber reinforced thermoplastic material can have a content of fiber not more than 70%. Preferably, it can have a content of about 15% to 45% fiber, and more preferably about 20% to 35% fiber.
  • the fiber can be short fiber or milled fiber or mixture of the short fiber and the milled fiber.
  • the fiber can comprise any one of glass fiber, boron fiber, ceramic fiber, quartz fiber and basalt fiber or any combination thereof.
  • thermoplastic material can comprise engineering plastics or high performance engineering plastics.
  • the thermoplastic material can comprise any one of polyethylene terephthalate, polybutylene terephthalate, polytri methylene terephthalate, polyoxymethylene, polycarbonate, polysulfone, polyamide, aromafic polyamides, polyetheretherketone, polyphenylene oxide, polyphenylene sulfide, polyarylsulfone, polyethersulfone, and polyetherimide or any combination thereof.
  • a composite insulator according to the first aspect as set forth hereinabove in bushing for transformers, circuit breaker, instrument transformer, power transformer, cable termination, surge arresters, and gas insulated switchgear.
  • the processing of the composite insulator as provided in the present invention is much simpler and more cost-efficient, and the output rate thereof is substantially improved. Additionally, the composite insulator of the present invention is more environment-friendly due to its good recyclability.
  • FIG. 1 A schematically illustrates a composite insulator in the prior art.
  • FIG. 1 B schematically illustrates a partial sectional view of the composite insulator in
  • FIG. 2 schematically illustrates a composite insulator according to an embodiment of the present invention.
  • the inventors have proposed a new composite insulator.
  • the composite insulator comprises an insulation tube 201 for bearing mechanical loads, elastic sheds 202 for a purpose of protection and metal end fittings 203, 204 respectively provided at each end of the composite insulator; however, the insulation tube 201 has used a different material, i.e. thermoplastic material to replace with the o ginal glass fiber reinforced epoxy resin used in the prior art.
  • the thermoplastic material should have a higher elastic modulus to provide the required mechanical properties and keep a small deflection for the insulator. It is known that the insulation tube will support the hollow insulator to resist outside loads, e.g. bending, vibration and etc., and thus the mechanical property is a key performance indicator for the composite insulator. Besides, it is also important to keep a small deflection for the insulation tube. Therefore, a higher elastic modulus is a critical requirement. However, for some other application, the requirement of the elastic modulus is very low and the thermoplastic material such as any engineering plastics and high performance engineering plastics can satisfy the requirement.
  • the fiber reinforced thermoplastic material is a kind of thermoplastic material which is reinforced with fibers.
  • the fiber generally has a high elastic modulus, low deformation under pressure and a high intensity, and thus adding fiber into the thermoplastic material will enhance toughness of the thermoplastic material, which made the reinforced thermoplastic material much more suitable for the insulation tube.
  • the fiber added into the thermoplastic material can be in any suitable form, however, the short fiber or milled fiber is preferable.
  • the short fiber can also be called as cut fiber, and can be obtained by for example cutting or pulling apart the long fiber bundle.
  • the milled fiber i.e., the fiber power, is obtained by milling the fiber into power.
  • the suitable fiber can be glass fiber, boron fi ber, ceramic fiber, quartz fiber, basalt fiber or any combination thereof.
  • the fiber added into the thermoplastic material can be not more than about 70%.
  • the proper content of fiber might be different.
  • a small size of insulator will require a low fiber content and the large size of i nsulator will require a high fiber content.
  • the fiber reinforced thermoplastic material can have about 15% to 45% of fiber, in such a way, the insulation tube will have a better performance. Additionally, 20% to 35% fiber in the fiber reinforced will be more preferable.
  • the thermoplastic material can be any proper thermoplastic material which can provide enough stiffness to product the insulation tube.
  • the thermoplastic material used to product the insulation tube could be engineering plastics or high performance engineering plastics and particularly, it can be any one of polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polyoxymethylene, polycarbonate, polysulfone, polyamide, aromafic polyamides, polyetheretherketone, polyphenylene oxide, polyphenylene sulfide, polyarylsulfone, polyethersulfone, and polyetherimide or any combination thereof.
  • the insulation tube will be made of thermoplastics material
  • the insulation tube can be made by any suitable molding method such as extrusion molding, injection molding and the like.
  • the processing of the thermoplastic tube can be much simpler and thus more efficiently for tube products.
  • thermoplastic material has a better recyclability than the epoxy resin.
  • the epoxy resin as a kind of thermosets is not recycled currently to a great extent since it belongs to the cross-link structure and cannot be melted and the current recycling is only restricted to milling and using the milled power as filler.
  • replacing the GFRP tube with thermoplastic tube could make power products much friendlier for the environment.
  • the processing of the composite insulator as provided in the present invention can be much simpler and more cost-efficient, and the output rate thereof can be substantially improved. Additionally, the composite insulator of the present invention is more environment-friendly due to its good recyclability.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulators (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Insulating Bodies (AREA)

Abstract

La présente invention concerne un isolant composite et son utilisation. L'isolant composite selon l'invention comprend un tube isolant (201) qui est fabriqué en matériau thermoplastique. En comparaison avec l'isolant composite traditionnel, le traitement de l'isolant composite selon l'invention est beaucoup plus simple et plus rentable, et la vitesse de production de celui-ci est considérablement améliorée. En outre, l'isolant composite selon l'invention est plus respectueux de l'environnement en raison de sa bonne recyclabilité.
PCT/CN2011/083385 2011-12-02 2011-12-02 Isolant composite et son utilisation Ceased WO2013078681A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/083385 WO2013078681A1 (fr) 2011-12-02 2011-12-02 Isolant composite et son utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/083385 WO2013078681A1 (fr) 2011-12-02 2011-12-02 Isolant composite et son utilisation

Publications (1)

Publication Number Publication Date
WO2013078681A1 true WO2013078681A1 (fr) 2013-06-06

Family

ID=48534651

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/083385 Ceased WO2013078681A1 (fr) 2011-12-02 2011-12-02 Isolant composite et son utilisation

Country Status (1)

Country Link
WO (1) WO2013078681A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015197771A1 (fr) * 2014-06-26 2015-12-30 Szs Engineering Gmbh Séparateur électrostatique destiné à une séparation électrostatique de particules à partir d'un courant de gaz

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1151594A (zh) * 1995-10-04 1997-06-11 施耐德电器公司 一种绝缘子制造方法和按照这一方法获得的绝缘子
US5847325A (en) * 1996-04-03 1998-12-08 Gagne; Serge Electrical insulator having sheds
WO2003107360A1 (fr) * 2002-06-16 2003-12-24 Maclean-Fogg Company Isolateur composite

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1151594A (zh) * 1995-10-04 1997-06-11 施耐德电器公司 一种绝缘子制造方法和按照这一方法获得的绝缘子
US5847325A (en) * 1996-04-03 1998-12-08 Gagne; Serge Electrical insulator having sheds
WO2003107360A1 (fr) * 2002-06-16 2003-12-24 Maclean-Fogg Company Isolateur composite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015197771A1 (fr) * 2014-06-26 2015-12-30 Szs Engineering Gmbh Séparateur électrostatique destiné à une séparation électrostatique de particules à partir d'un courant de gaz

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