WO2011095163A2 - Dispositif supraconducteur et utilisation d'une mousse syntactique dans des dispositifs supraconducteurs - Google Patents

Dispositif supraconducteur et utilisation d'une mousse syntactique dans des dispositifs supraconducteurs Download PDF

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Publication number
WO2011095163A2
WO2011095163A2 PCT/DE2011/075002 DE2011075002W WO2011095163A2 WO 2011095163 A2 WO2011095163 A2 WO 2011095163A2 DE 2011075002 W DE2011075002 W DE 2011075002W WO 2011095163 A2 WO2011095163 A2 WO 2011095163A2
Authority
WO
WIPO (PCT)
Prior art keywords
conductor
syntactic foam
superconducting
cryogen
superconducting device
Prior art date
Application number
PCT/DE2011/075002
Other languages
German (de)
English (en)
Other versions
WO2011095163A3 (fr
Inventor
Andrey Mashkin
Anja Strauchs
Armin Schnettler
Original Assignee
Rwth Aachen
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 Rwth Aachen filed Critical Rwth Aachen
Publication of WO2011095163A2 publication Critical patent/WO2011095163A2/fr
Publication of WO2011095163A3 publication Critical patent/WO2011095163A3/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
    • H01B12/14—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by the disposition of thermal insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment

Definitions

  • the invention relates to a superconducting device with an electrical conductor which can be cooled by means of a cryogen and the use of a syntactic foam.
  • Syntactic foams are already known in the art.
  • WO 2008/110979 A2 describes a syntactic foam as electrical insulating material for high voltage applications.
  • the syntactic foam consists of a polymer matrix, for example epoxy resin, in which hollow microspheres are introduced as filler.
  • the hollow microspheres may be made of glass, for example be manufactured and should have a thin wall thickness.
  • the hollow microspheres can be filled with a gas, for example with air, N 2, CO 2 or SO 2.
  • the invention can be applied to superconducting devices which have an electrical conductor which can be cooled by means of a cryogen.
  • Such a superconducting arrangement must usually have a thermal insulation for the cryogen and an electrical insulation for the current-carrying conductor. The thermal insulation prevents the cryogen from warming up to keep the cooling energy of the cryostat low.
  • Known fluid cryogens are, for example, liquid hydrogen, liquid nitrogen and liquid oxygen.
  • An example of a superconducting device is a superconducting cable.
  • a superconducting cable is disclosed for example in DE 699 28 129 T2.
  • the multi-phase cable described therein has a plurality of conductors that are hollow, wherein a cryogen can flow inside the conductor.
  • a cryogen can flow inside the conductor.
  • Around the conductor around a dielectric for electrical insulation is arranged.
  • the dielectric is located between the conductor and a coaxial return conductor, the dielectric insulating the two conductors against each other.
  • the cryogen used is liquid nitrogen, which typically provides a temperature between 65K and 90K.
  • the conductor, the dielectric and the return conductor are in turn flowed together by a cryogen, so that the dielectric is also at cryogenic temperature.
  • the tubular sheath is surrounded by a "super heat insulator" formed of a plurality of metallized ribbons consisting of a polyester resin and loosely wound, optionally using spacers disposed therebetween an encapsulating metal tube and a polymer shell formed. Due to the fact that the dielectric is at cryogenic temperature, this design is also called “cold dielectric.” Another example of such a superconducting cable is described in US 2009/229 848 A1.
  • thermal insulation of the cryogen is initially carried out, in which case the electrical insulation is arranged further outward around the thermal insulation so that the electrically insulating material is kept warm. For this reason, such a construction is also referred to as a "warm dielectric" arrangement.
  • a disadvantage of the superconducting device described in the prior art is the complex structure, since in addition to the thermal insulation and an independent electrical insulation must be provided.
  • the invention has for its object to design a superconducting device with a simplified structure.
  • the invention solves the problem with the claims 1 and 12.
  • Advantageous developments are part of the dependent claims.
  • a superconducting device according to the invention is designed such that it has a syntactic foam for thermal and electrical insulation.
  • the syntactic foam can perform both thermal and electrical insulation, the structure of the superconducting device simplifies, since other measures for electrical and thermal insulation can be simplified or at best completely omitted.
  • the conductor can be electrically insulated to the outside, and further the cryogen can be thermally isolated to the outside.
  • syntactic foam is understood in particular to mean a material which comprises a polymer matrix into which hollow microspheres are introduced.
  • Possible materials for the polymer matrix include, but are not limited to, rigid and flexible epoxy resins, silicones, silicone gels, or others
  • Hollow microspheres are hollow spheres filled with a fluid, in particular gas, with an average diameter of less than 1 mm, in particular less than 500 ⁇ m.
  • the hollow microspheres should have a thin wall thickness, which may be in the range of less than 100 m, in particular in the range of less than 10 ⁇ .
  • air, N 2, CO 2, SO 2 or SF 6 can be used as filling gas.
  • the syntactic foam should thus surround the conductor and the cryogen, eg liquid hydrogen, liquid nitrogen and liquid oxygen, for thermal and electrical insulation. If the syntactic foam provides complete thermal isolation, the space on the side of the syntactic foam away from the conductor may be cryogenic free.
  • the conductor is hollow and can be flowed through by the cryogen.
  • the conductor can also, in particular in addition, be flowed around by the cryogen.
  • the syntactic foam is no longer used either as a "cold” or as a “warm” dielectric but as a “cold-warm” dielectric because the foam is warm on one side in the cold and on the other side in heat
  • the syntactic foam may have a cold side facing the conductor and a warm side facing away from the conductor, so that a pronounced temperature distribution exists within the syntactic foam.
  • 150 ° C wherein on the hot side a significantly warmer normal temperature, in particular more than -50 ° C, preferably an ambient temperature, may be present.
  • the syntactic foam may be between the conductor and a conductive element of electrically conductive material, the syntactic foam electrically insulating the conductor from the conductive element. Due to the solids properties of the syntactic foam, the syntactic foam can also mechanically support the conductor with respect to the guide element.
  • a superconducting cable for example, a superconducting cable can be understood, wherein preferably the syntactic foam between the conductor and the electrically conductive cable shield is arranged.
  • the invention is not limited to superconducting cables but can be used in all superconducting devices are used, in which a thermal and electrical insulation must be made.
  • the invention further includes the use of a syntactic foam as electrical and thermal insulating material in superconducting devices, in particular of the type already described.
  • FIGS. 1 and 2. Show it:
  • Fig. 1 is a superconducting cable with a flow-through conductor in
  • Fig. 2 shows a superconducting cable with a flow around conductor in cross section.
  • Fig. 1 shows a superconducting cable 1, which is composed of several layers. It comprises a hollow conductor 4a made of a superconducting material, through which a cryogen 3 flows, for example liquid nitrogen. The cryogen 3 cools the conductor 4a to a cryogenic temperature which is, for example, in the range of -200 ° C., so that the conductor 4a becomes superconducting.
  • a cryogen 3 for example liquid nitrogen.
  • the cryogen 3 cools the conductor 4a to a cryogenic temperature which is, for example, in the range of -200 ° C., so that the conductor 4a becomes superconducting.
  • a syntactic foam 5 which consists for example of an epoxy resin as a polymer matrix, introduced into the air-filled hollow microspheres with a diameter in the range of 100 ⁇ im and a wall thickness in the range of 1 ⁇ are.
  • the space of the superconducting device 1 on the side 10 of the syntactic foam 5, which faces away from the conductor 4a, of the syntactic foam 5, which acts as a thermal and electrical insulating material, is cryogen-free.
  • the superconducting cable further comprises a cable shield 6 made of electrically conductive metal, so that the syntactic foam 5 the conductor 4a with respect to the cable shield 6 as an electrical guide element isolated.
  • the syntactic foam 5 thus provides a mechanical support between the electrical conductor 4a and electrical guide element 6.
  • Around the cable shield 6 around a polymeric outer shell is arranged as a cable sheath 7.
  • the syntactic foam 5 has a conductor 4a facing cold side 9, whose temperature is also in the range of the cryogenic temperature. Since the syntactic foam acts as a thermal insulator in addition to the function of electrical insulation, the temperature inside the syntactic foam increases sharply, so that on the hot side 10 of the syntactic foam 5, which is on the side facing away from the conductor 4a, to normal temperature is, for example, at ambient temperature.
  • the layer thickness of the syntactic foam 5 is dimensioned such that both a thermal and an electrical insulation is ensured. It depends thus u.a. from the cryogenic temperature, the allowable normal temperature, and the difference between the electric potentials of the conductor 4a and the shield 6.
  • FIG. 1 represents only a schematic drawing.
  • the superconducting cable 1 may have further functional layers. Furthermore, the cable can also be designed polyphase.
  • FIG. 2 shows another superconducting cable 2 in a modification of the superconducting cable 1 shown in FIG.
  • the cable 2 shown in Fig. 2 has an electrical see conductor 4 b, which is flowed around by a cryogen 3.
  • the conductor 4b could also be made hollow and simultaneously flowed through by the cryogen.
  • the cryogen 3 flows according to FIG. 2 in an annular space between syntactic foam 5 and conductor 4b.
  • syntactic foam 5 For the mechanical support of the conductor 4b in the annular space are used in particular star-shaped webs 8, which are preferably also made of the syntactic foam.
  • a cable shield 6 is arranged, wherein the radial space between the cable shield 6 and conductor 4b of the cryogen 3 and the syntactic foam 5 is filled.
  • a polymer sheath 7 is again arranged.
  • the superconducting devices shown are particularly designed for medium and high voltage applications.
  • the superconducting device may for example also be designed as a superconducting coil.

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  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)

Abstract

Dispositif supraconducteur comprenant un conducteur électrique (4a, 4b), pouvant être refroidi au moyen d'un cryogène (3), et une mousse syntactique (5) servant à l'isolation thermique et électrique. Utilisation d'une mousse syntactique (5) comme matériau isolant électrique et thermique dans des dispositifs supraconducteurs (1).
PCT/DE2011/075002 2010-02-02 2011-01-11 Dispositif supraconducteur et utilisation d'une mousse syntactique dans des dispositifs supraconducteurs WO2011095163A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010006507A DE102010006507B4 (de) 2010-02-02 2010-02-02 Supraleitungsvorrichtung sowie Verwendung eines syntaktischen Schaumes bei Supraleitungsvorrichtungen
DE102010006507.2 2010-02-02

Publications (2)

Publication Number Publication Date
WO2011095163A2 true WO2011095163A2 (fr) 2011-08-11
WO2011095163A3 WO2011095163A3 (fr) 2012-01-19

Family

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Application Number Title Priority Date Filing Date
PCT/DE2011/075002 WO2011095163A2 (fr) 2010-02-02 2011-01-11 Dispositif supraconducteur et utilisation d'une mousse syntactique dans des dispositifs supraconducteurs

Country Status (2)

Country Link
DE (1) DE102010006507B4 (fr)
WO (1) WO2011095163A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114521200A (zh) * 2019-09-26 2022-05-20 赖茵豪森机械制造公司 作为电绝缘材料的干燥复合泡沫

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011055401A1 (de) * 2011-11-16 2013-05-16 Rwth Aachen Isolierkörper und Verfahren zur Herstellung eines Isolierkörpers
DE102015116502A1 (de) 2015-09-29 2017-03-30 Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen Leiter für eine elektrische Freileitung und Verfahren zur Ummantelung eines Leiterseils eines Leiters

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69928129T2 (de) 1998-12-24 2006-07-20 Prysmian Cavi E Sistemi Energia S.R.L. Supraleitendes kabel
WO2008110979A2 (fr) 2007-03-13 2008-09-18 Philips Intellectual Property & Standards Gmbh Matériau d'isolation et son procédé de fabrication
US20090229848A1 (en) 2006-04-10 2009-09-17 Sumitomo Electric Industries, Ltd. Superconducting cable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409731A (en) * 1966-03-18 1968-11-05 Rita F Schifreen Force-cooled cable system
US4845308A (en) * 1987-07-20 1989-07-04 The Babcock & Wilcox Company Superconducting electrical conductor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69928129T2 (de) 1998-12-24 2006-07-20 Prysmian Cavi E Sistemi Energia S.R.L. Supraleitendes kabel
US20090229848A1 (en) 2006-04-10 2009-09-17 Sumitomo Electric Industries, Ltd. Superconducting cable
WO2008110979A2 (fr) 2007-03-13 2008-09-18 Philips Intellectual Property & Standards Gmbh Matériau d'isolation et son procédé de fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114521200A (zh) * 2019-09-26 2022-05-20 赖茵豪森机械制造公司 作为电绝缘材料的干燥复合泡沫
CN114521200B (zh) * 2019-09-26 2023-08-15 赖茵豪森机械制造公司 作为电绝缘材料的干燥复合泡沫

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Publication number Publication date
WO2011095163A3 (fr) 2012-01-19
DE102010006507A1 (de) 2011-08-04
DE102010006507B4 (de) 2011-09-22

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