WO2007107119A1 - Transporteur de courant combiné à un tube thermique - Google Patents

Transporteur de courant combiné à un tube thermique Download PDF

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Publication number
WO2007107119A1
WO2007107119A1 PCT/CN2007/000922 CN2007000922W WO2007107119A1 WO 2007107119 A1 WO2007107119 A1 WO 2007107119A1 CN 2007000922 W CN2007000922 W CN 2007000922W WO 2007107119 A1 WO2007107119 A1 WO 2007107119A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal conductive
pipe
heat pipe
carrier fluid
composite heat
Prior art date
Application number
PCT/CN2007/000922
Other languages
English (en)
Chinese (zh)
Inventor
Ruzhang Wang
Xuedong Wang
Original Assignee
Beijing Ruiheng Super High Voltage Electrical Equipment Research Institute
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 Beijing Ruiheng Super High Voltage Electrical Equipment Research Institute filed Critical Beijing Ruiheng Super High Voltage Electrical Equipment Research Institute
Publication of WO2007107119A1 publication Critical patent/WO2007107119A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/18—Liquid cooling by evaporating liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the present invention relates to electrical equipment, and more particularly to a carrier fluid for conducting current in an electrical equipment.
  • a carrier fluid for conducting current in an electrical equipment For example, high voltage bushings, current transformers, high current busses, and conductors in circuit breakers.
  • the carrier fluid is the main component used to conduct current in electrical equipment.
  • carrier fluids include the carrier fluid of the casing in the electrical equipment, the carrier fluid of the primary winding of the current transformer, the high current busbar, and the carrier fluid used to conduct the current in other electrical appliances. Book
  • the carrier fluid in power equipment is generally made of a conductor of copper, aluminum or other metallic materials.
  • the conductor heats up due to the thermal effect of the current. If the heat exceeds the limit of the insulating material outside the conductor or conductor, it will inevitably cause damage to the conductor or insulation. After long-term operation, it will inevitably cause damage to the power equipment, causing power outage of the power grid and causing great loss. Since the heat is proportional to the square of the current, when the rated current of the device is large, the amount of heat is greatly increased. For devices with high voltages, the heat dissipation is unfavorable due to the increased thickness of the insulator, and the problem of heat generation of the conductors and insulators is more serious.
  • the object of the present invention is to overcome the deficiencies of the prior art and to develop a carrier fluid having a small cross section, good heat dissipation and low temperature rise, and solving the problem of overheating of a high voltage, high current electrical equipment carrier fluid.
  • a novel composite heat pipe carrier fluid that is incorporated into and improved for use in a carrier fluid for electrical equipment.
  • a novel composite heat pipe carrier fluid according to the present invention comprises a heat pipe lead core and a device wire clamp, the heat pipe lead core comprising a metal conductive pipe sealed therein and filled with a working fluid, and a heat sink connected to the upper end portion of the metal conductive pipe And a heat insulating layer fixed on the outer surface of the metal conductive tube and a conductive layer disposed on the outer surface of the heat insulating layer, wherein the conductive layer is electrically connected to the metal conductive tube.
  • the invention relates to a novel composite heat pipe carrier fluid, wherein the angle between the metal conductive pipe and the ground enables the working fluid to return to the bottom of the metal conductive pipe by gravity.
  • the metal conductive tube may be at an acute angle of 15 ° to 90 ° to the ground or perpendicular to the ground (ie, at an angle of 90 ° to the ground).
  • the metal conductive tube may be at an acute angle of 15° to 90° to the ground or a "1" shape perpendicular to the ground or an angle between the two arms of 0 ° to 90.
  • the invention relates to a novel composite heat pipe carrier fluid, wherein the working fluid can be a low boiling point, non-toxic, non-corrosive liquid to a metal conductive pipe.
  • the invention relates to a novel composite heat pipe carrier fluid, wherein the gas pressure inside the metal conductive pipe can be lower than or equal to 1 standard atmospheric pressure.
  • the novel composite heat pipe carrier fluid may further comprise a sealing member for sealing the metal conductive pipe disposed at two ends of the metal conductive pipe.
  • the novel composite heat pipe carrier fluid wherein the inner surface of the heat insulation layer made of a heat resistant material can be closely attached to a copper or aluminum metal conductive tube, and the outer surface of the conductor or the semiconductor conductive layer can be Tightly fixed on the heat insulation layer, one end of the conductive layer can be electrically connected to the outer surface of the metal conductive tube.
  • the novel composite heat pipe carrier fluid may further comprise a metal conductive tube cavity
  • a temperature sensor in the liquid that provides a temperature signal that can be detected remotely.
  • a temperature display can also be included that is coupled to the temperature sensor via an insulated wire.
  • the novel composite heat pipe carrier fluid of the present invention has the following advantages - first, because the temperature of the carrier fluid is lowered by the composite heat pipe carrier fluid, the manufacturing problem of the carrier fluid overheating of the high current and the krypton voltage product is solved. . Not only can the cross section of the carrier fluid be reduced, the non-ferrous metal resources are saved, the cost of the product is reduced, and the safe operation of the power equipment is facilitated.
  • the current transformer for 220kV level when the rated current of 3000A, the conductor cross-sectional area can be reduced to about 68.6cm 2 to about 9.4cm 2.
  • the weight can be reduced from about 283 kg to about 41.9 kg, saving 241 kg of copper.
  • the mechanical strength of the carrier fluid is enhanced by the presence of the insulating layer.
  • Figure 1 is a schematic view showing the structure of a composite heat pipe carrier fluid for an electrical bushing of the present invention.
  • Fig. 2 is a schematic view showing the structure of an organic composite dry high-pressure bushing having a composite heat pipe carrier fluid of the present invention.
  • Fig. 3 is a view showing the structure of a composite heat pipe carrier fluid for a current transformer of the present invention. detailed description
  • the invention applies the gravity heat pipe technology to the carrier fluid, thereby constituting a novel composite heat pipe carrier fluid, which comprises a heat pipe guide core and a device clamp.
  • the heat pipe lead includes a metal conductive tube, a seal, a heat sink, a heat pipe working fluid, a heat insulating layer, a conductive layer, and the like, and may also include a temperature sensor, a temperature display, etc., which are described in more detail below.
  • the device clamp is used to connect the heat pipe lead to the external high voltage lead to direct current into and out of the carrier fluid.
  • the tubular metal conductor after injecting a certain amount of a low-boiling, non-toxic, non-corrosive liquid into the tubular metal conductor as a heat pipe working fluid, the tubular metal conductor is sealed or the air pressure in the tube is lower than 1 standard atmosphere after the air is extracted. seal. Since the metal conductor heats up after passing the current, the liquid at the bottom of the metal conductor evaporates rapidly, and the generated steam rises and radiates heat to the surrounding environment through the heat sink connected to the upper end of the metal conductor, and the steam reheats and then recondenses into a liquid and is in gravity. Under the action, it flows back to the bottom of the metal conductor, and reciprocates to cool the metal conductor quickly.
  • the heat pipe working fluid flows back to the bottom of the metal conductive pipe by its own gravity after the heat condensation.
  • the heat pipe lead can be "1" or “U” shaped, or any other suitable shape.
  • the "1"-shaped heat pipe guide core and the ground are separated by an acute angle between 15 ° and 90 ° or vertical ground, and the "U"-shaped heat pipe guide core has two arms. The angle between the two is between 0 ° and 90 °.
  • the above angle is only an example, as long as the heat pipe working fluid can flow back to the bottom of the metal conductive tube by its own gravity after the heat condensation, any other angle is possible.
  • a heat insulator is fixed on the outer surface of the metal conductive tube, and a conductive layer of a conductor or a semiconductor material is disposed on the surface of the heat insulating layer and electrically connected to the metal conductive tube.
  • the insulating layer serves to reduce the temperature of the insulator surrounding the heat pipe lead, while increasing the mechanical strength of the heat pipe lead.
  • the conductive layer is composed of a conductor or a semiconductor film having the same potential as the metal conductive tube.
  • FIG. 1 is a schematic view showing the structure of a composite heat pipe carrier fluid for an electrical bushing of the present invention.
  • the metal conductive tube 3 in the heat pipe lead 1 is a copper "1"-shaped tubular conductor, and the heat sink 4 is closely connected to the upper end portion of the metal conductive tube 3.
  • a device clamp 2 is provided near the upper end portion of the metal conductive tube 3 for electrically connecting the metal conductive tube 3 to an external lead wire, and can be selected from existing products according to the rated current of the conductor.
  • a seal member 6 is provided at both ends of the metal conductive tube 3. The seal 6 can be metallic and welded to the metal conductive tube 3. Although a structure having two seals 6 is shown in FIG.
  • the seal 6 only at the bottom of the metal conductive tube 3, and to directly weld the top opening of the metal conductive tube 3 to the case of the heat sink 4
  • the body is sealed.
  • the manner of sealing is not limited to welding, and for example, a mechanical seal can also be used.
  • the metal conductive tube 3 is made of copper in the above example, it is well known to those skilled in the art that aluminum or any other suitable metal may be used to manufacture the metal conductive tube 3 of the present invention.
  • the metal conductive tube 3 is filled with a working fluid 5, and a liquid having a low boiling point, non-toxicity, and non-corrosive to the metal conductive tube 3 can be used, for example, ethanol is used as the working fluid.
  • the volume of the working fluid charged is 1/3 of the volume of the cavity in the tube, but other volume ratios may be employed.
  • the gas pressure in the metal conductive tube 3 is lower than or equal to 1 standard atmospheric pressure. In one specific example, the gas pressure in the tube is 0.1 MPa, but other values may be used.
  • the heat insulating layer 7 is wrapped on the outer surface of the metal conductive tube 3.
  • the heat insulating layer is made of a heat insulating material, for example, may be wrapped with a prepreg epoxy fiberglass cloth on the outer surface of the metal conductive tube, and the thickness may be, for example, 3 ⁇ 5mm.
  • a thin layer of conductive or semiconductive material (for example, 15 ⁇ thick aluminum foil) is disposed on the outer surface of the heat insulating layer 7 to form a conductive layer 8, and one end of the conductive layer 8 is in close contact with the outer surface of the metal conductive tube 3 to form an electrical connection (for example, The copper conductive sheet is connected, and the temperature display 9 is disposed outside the sealing member 6 at the upper end portion of the metal conductive tube 3, and is composed of a metal wire 10 with an insulating sheath and a temperature sensor disposed in the working fluid 5 at the lower portion of the metal conductive tube 3. (such as thermocouple or thermal resistance) 11 connected.
  • the signal from the temperature sensor is transmitted to the remote monitoring device for display and processing in a wired or wireless manner.
  • the temperature sensor 11 is not limited to the specific example described above, and any other temperature measuring device capable of providing a temperature signal detectable from a remote side may be used.
  • Fig. 2 is a schematic view showing the structure of an organic composite dry high-pressure bushing having a composite heat pipe carrier fluid of the present invention.
  • the organic composite dry high pressure bushing is a well-known product in the art, for example, in the specification of Chinese Utility Model Patent No. 93240259.3, which was authorised to Huang Weishu on August 3, 1994, entitled “New High Pressure Wall Bushing" One such product is described, the entire contents of which are incorporated herein by reference. For the sake of simplicity, only the insulator structure on the right half side is shown in FIG.
  • an insulating layer 12 composed of an organic insulating film (for example, a polytetrafluoroethylene film) or an epoxy resin fiber (for example, epoxy resin glass fiber) and a conductive or semiconductive material (for example, aluminum foil) are used.
  • an organic insulating film for example, a polytetrafluoroethylene film
  • an epoxy resin fiber for example, epoxy resin glass fiber
  • a conductive or semiconductive material for example, aluminum foil
  • the capacitive screen 13 is alternately wrapped around the conductive layer 8 to form a capacitor voltage equalizing insulating core 14, and the organic insulating outer sheath 15 (for example, a heat shrinkable tube) is tightly bonded to the outer surface of the capacitive equalizing insulating core 14, organic
  • the insulating shed 16 (for example, a silicone rubber shed) is tightly fitted to the portion of the organic insulating outer sheath 15 that extends beyond the grounding screen 17, and the last screen lead 18 (e.g., copper wire) connected to the grounding screen 17 is firmly connected to the grounding screen. 17 is introduced to the outside of the outer sheath 15.
  • Fig. 3 is a view showing the structure of a composite heat pipe carrier fluid for a current transformer of the present invention.
  • the composite heat pipe carrier fluid of the invention can be used for oil-filled capacitive current transformers, and can also be used for composite insulated dry current transformers, as a carrier fluid for the primary winding of the transformer.
  • the composite insulated dry current transformer is a well-known product in the art, for example, the Chinese utility model patent No. 99201400.X entitled "A new type of dry high voltage current transformer” authorized by Huang Weishu on February 2, 2000. One such product is described in the specification of the number, and the entire contents of this patent specification are hereby incorporated by reference.
  • the composite heat pipe carrier fluid for a current transformer of the present invention is different from the composite heat pipe carrier fluid for an electrical bushing shown in FIG. 1 in that the metal in the heat pipe lead 1 is electrically conductive.
  • Tube 3 is a "U" shaped tubular electrical conductor.
  • the angle between the arms of the "U" shaped heat pipe lead is preferably between 0 ° and 90 °. It should be noted that this includes the case where the upper ends of the arms of the "U" shaped heat pipe lead are very close to each other to approximate the " ⁇ " shape.
  • the structure and wrapping manner of the insulator and the organic composite dry high voltage bushing having the composite heat pipe carrier fluid of the present invention described above with reference to FIG. Basically the same, so a detailed description thereof will be omitted.
  • an insulating layer 12 made of insulating paper (for example, cable paper) and a conductive or semiconductive material (for example, aluminum foil)
  • the prepared capacitive screen 13 is alternately wrapped around the outer surface of the heat pipe lead 1 to form a capacitor equalizing insulating core 14, and the wrapped capacitor core is vacuum dried.
  • the bottom of the dried capacitor core is assembled in a metal case, and the upper part of the large porcelain sleeve and the top flange, expander, etc. are assembled, and then dried and vacuum-filled.

Abstract

L'invention porte sur un conducteur électrique sous forme de tube thermique comprenant: un tube métallique conducteur (3) dont la pression intérieure est au plus d'une atmosphère; un fluide à bas point d'ébullition non toxique et non caustique le remplissant; un radiateur (4); une couche thermoisolante (7); et une couche conductrice (8). Lorsque le tube conducteur (3) conduit du courant, il diffuse de la chaleur, le fluide de sa base se vaporise rapidement et le radiateur (4) diffuse la chaleur. En se condensant, le gaz vaporisé redevient liquide et retourne à la base du tube conducteur (3)en abaissant sa température. Le conducteur peut servir de bus pour équipements électriques, d'enroulement primaire de transformateur, de bus pour fortes intensités, etc. En outre En abaissant la température du tube, il permet d'en réduire la section transversale, tout En empêchant sa surchauffe, En diminuant la consommation de matériaux et d'énergie et En accroissant la qualité et la durée de vie de la production.
PCT/CN2007/000922 2006-03-21 2007-03-21 Transporteur de courant combiné à un tube thermique WO2007107119A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200610065248 CN100570262C (zh) 2006-03-21 2006-03-21 一种复合热管载流体
CN200610065248.1 2006-03-21

Publications (1)

Publication Number Publication Date
WO2007107119A1 true WO2007107119A1 (fr) 2007-09-27

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Application Number Title Priority Date Filing Date
PCT/CN2007/000922 WO2007107119A1 (fr) 2006-03-21 2007-03-21 Transporteur de courant combiné à un tube thermique

Country Status (2)

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CN (1) CN100570262C (fr)
WO (1) WO2007107119A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2144259A3 (fr) * 2008-07-09 2012-12-26 Hamilton Sundstrand Corporation Transformateur interphase
EP2704157A1 (fr) 2012-12-19 2014-03-05 ABB Technology Ltd Traversée isolante électrique
EP2942787A1 (fr) 2014-10-08 2015-11-11 ABB Technology Ltd Traversée électrique
EP3007184A1 (fr) 2014-10-06 2016-04-13 ABB Technology Ltd Traversée électrique

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DE602008006101D1 (de) * 2008-12-05 2011-05-19 Abb Technology Ltd Durchführungsdiagnose
CN106415740B (zh) * 2014-02-05 2018-10-19 Abb瑞士股份有限公司 冷凝器芯
CN105048369B (zh) * 2015-08-18 2017-08-01 西安交通大学 一种超/特高压干式套管中心载流导体的散热结构
CN105590706B (zh) * 2016-02-01 2017-12-22 大连耐道电器有限公司 一种玻璃钢电容式变压器套管的生产工艺方法
DE102016223991A1 (de) * 2016-12-01 2018-06-07 Audi Ag Bordnetz für ein Kraftfahrzeug und Kraftfahrzeug
CN112993818B (zh) * 2021-02-25 2023-04-25 中驰三龙电力股份有限公司 一种馈线自动化终端开关柜

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467306A (en) * 1981-12-23 1984-08-21 Mitsubishi Denki Kabushiki Kaisha High voltage current transformer having coils immersed in dielectric fluid
CN2063278U (zh) * 1990-02-22 1990-10-03 沈阳变压器厂 大电流套管导电杆
CN2153125Y (zh) * 1993-03-05 1994-01-12 胡光新 焊接变压器
CN2290134Y (zh) * 1996-11-04 1998-09-02 胡广生 柔性耐张线夹
CN2492824Y (zh) * 2001-05-29 2002-05-22 胡芳 重力导热管散热装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467306A (en) * 1981-12-23 1984-08-21 Mitsubishi Denki Kabushiki Kaisha High voltage current transformer having coils immersed in dielectric fluid
CN2063278U (zh) * 1990-02-22 1990-10-03 沈阳变压器厂 大电流套管导电杆
CN2153125Y (zh) * 1993-03-05 1994-01-12 胡光新 焊接变压器
CN2290134Y (zh) * 1996-11-04 1998-09-02 胡广生 柔性耐张线夹
CN2492824Y (zh) * 2001-05-29 2002-05-22 胡芳 重力导热管散热装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2144259A3 (fr) * 2008-07-09 2012-12-26 Hamilton Sundstrand Corporation Transformateur interphase
EP2704157A1 (fr) 2012-12-19 2014-03-05 ABB Technology Ltd Traversée isolante électrique
EP3007184A1 (fr) 2014-10-06 2016-04-13 ABB Technology Ltd Traversée électrique
EP2942787A1 (fr) 2014-10-08 2015-11-11 ABB Technology Ltd Traversée électrique

Also Published As

Publication number Publication date
CN101042287A (zh) 2007-09-26
CN100570262C (zh) 2009-12-16

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