EP3140845A1 - Composant électrique comprenant un élément central électroconducteur - Google Patents

Composant électrique comprenant un élément central électroconducteur

Info

Publication number
EP3140845A1
EP3140845A1 EP15733413.7A EP15733413A EP3140845A1 EP 3140845 A1 EP3140845 A1 EP 3140845A1 EP 15733413 A EP15733413 A EP 15733413A EP 3140845 A1 EP3140845 A1 EP 3140845A1
Authority
EP
European Patent Office
Prior art keywords
insulation
heat
heat pipe
electrical component
electrical
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.)
Withdrawn
Application number
EP15733413.7A
Other languages
German (de)
English (en)
Inventor
Vladimir Danov
Stefan Kern
Jochen SCHÄFER
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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP3140845A1 publication Critical patent/EP3140845A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/62—Heating or cooling of contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts
    • H01H2009/523—Cooling of switch parts by using heat pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements

Definitions

  • the invention relates to an electrical component with an electrically conductive central component according to the preamble of claim 1.
  • Electrical components that are traversed in their intended use of high currents such as interrupters, medium voltage switchgear or high voltage interrupters must be electrically isolated from their environment.
  • current-carrying components there are industry standards that set a permissible limit temperature. To be able to transmit as high a current as possible without reaching the limit temperatures, attempts are made on the one hand to reduce the heat generation by the lowest possible electrical resistances and on the other hand to deliver the resulting heat by convection and / or radiation to the environment.
  • the object of the invention is to provide an electrical component with an electrically conductive central component and a surrounding electrical insulation affordzu ⁇ , which allows over the prior art, a better heat dissipation of the votes of the central component heat energy.
  • the object is achieved in an electrical component having an electrically conductive central component and an at least partially contact-free surrounding electrical ⁇ cal insulation according to claim 1.
  • the component according to the invention with an electrically conductive central component of claim 1 has at least a partially the central component surrounding electrical Iso ⁇ -regulation, and it is characterized in that a Wär ⁇ merohr is provided surrounded at least at one end of the insulation is and partially protrudes from the insulation. In this case, protruding from the insulation part of the heat pipe protrudes closer to the central component than the insulation.
  • Under heat pipe heat exchanger is understood to mean that allows utilizing heat of vaporization of a medium, in particular ⁇ sondere a fluid, a high heat flux. This means that on a small cross-sectional area large heat ⁇ quantities can be transported.
  • the basic operating principle is the same for both designs, the difference lies in the transport of the working medium, ie the fluid, but nerell without additional mechanical aids, such as ei ⁇ ner circulating pump, manages.
  • the thermal resistance of a heat ⁇ pipe is much smaller than that of metals. The behavior of the heat pipes therefore comes close to the isothermal state change. There is an almost constant temperature over the length of the heat pipe.
  • thermosiphon does not destroy heat, but only serves to transfer heat.
  • the problem is not the heat dissipation but the heat transfer along the component. Therefore, the influence of a thermosyphone or heat pipe is considerable.
  • the heat pipe can basically have a metallic sheath but also an electrically insulating sheath, such as glass or ceramic.
  • thermosiphon or heat pipe This avoids contact resistance.
  • the pressure and the insert temperature play an important role here. Possible fluids would be for this example Novec 649 (at 105 ° C about 5bar), Novec774 (at 105 ° C about 2.5 bar) etc.
  • the advantage of the invention is that the heat, the central component, the electrically conductive is flowed through and in an operating state of electric currents, is led away faster from this central component. Further, the heat is also passed through the heat pipe deeper into the material of the insulation, since one end of the heat pipe is surrounded by the insulation, so that this end of the heat pipe protrudes into the insulation.
  • the path through which the heat pipe penetrates into the insulation is heat must be reduced to the outside of the insulation, less than if convection had reached an inside of the insulation and would have to be dissipated throughout the insulation via heat conduction processes.
  • the heat pipe is positively and / or integrally integrated in the insulation.
  • the form-fitting or material ⁇ fitting seat of the heat pipe in the insulation provides leis ⁇ tet a good heat transfer.
  • the heat pipe can be fixed by an interference fit in the insulation, but it is particularly advantageous cast directly in the production of the insulation in a so-called potting compound in the insulating component to be formed.
  • the electrical component is a switch tube, for example, a medium-voltage switch tube and the central component is a corresponding switching contact. Particularly in the case of medium-voltage switching tubes, particularly high amounts of heat occur in the switching contacts, which have to be dissipated out of the interrupter tube.
  • the insulation surrounds the central component preferably concentrically, wherein the one or more heat pipes of the insulation runs concentrically inward or run, the heat pipes preferably evenly around the zent ⁇ rale component radially outward into the insulation. This ensures uniform heat transfer into the insulation.
  • the one end of the heat pipe which is surrounded by the insulation, protrudes at least 30% into the wall thickness of the insulation, ie at least at least 30% of the wall thickness of the insulation is buried in this.
  • Figure 1 shows a three-dimensional sectional view of a medium voltage switch tube with insulation and heat pipes ⁇ and
  • FIG. 2 shows a section through a switching tube according to FIG. 1 along the line II.
  • FIG. 1 shows a three-dimensional sectional view of an electrical component 2 in the form of a switching tube is 14 give ge ⁇ .
  • the interrupter 14 has a central component 4 in the form of a switching contact 18 in the central region.
  • the switching contact 18 is surrounded by an electrical Isolie ⁇ tion.
  • 6 There are heat pipes 8 are provided, which extend from the electrical insulation 6 centrally to the switching contact 18 inwardly.
  • FIG 2 is a not to scale given along the dashed line II in Figure 1, it can be seen that a plurality of heat pipes 8 of the insulation 6 konzent ⁇ have inwardly towards the switching contact 18, wherein they do not touch this.
  • the heat pipes 8 are bezüg ⁇ Lich of switch contact 18, for reasons of electrical Si ⁇ reliability arranged without contact. However, they approach the switching contact 18 as far as this is justifiable with respect to the insu ⁇ border insulation.
  • the heat pipes 8 transmit the light emitted from the switching contact 18 heat, as be ⁇ wrote, faster than a normal metallic heat conduction ter and also faster than it would therefore by a pure heat ⁇ radiation or convection of the case toward the insulation 6.
  • the insulation 6 is a specially constructed out of electrical insulation and thermal stability plastic which before being poured Trains t ⁇ and also as a so-called potting compound can be designated, wherein the heat pipes 8 are already poured in the production of the insulation 6 in this.
  • the heat pipes 8 protrude a considerable amount into a wall thickness 16 of the insulation 6. There are two limiting factors, on the one hand the
  • the heat pipe 8 is formed from an electrically nonconductive casing material.
  • the fluid located in the heat pipe for this purpose are, for example ent ⁇ desalted water or fluids such as NOVEC 649, NOVEC FC 7000, and 72 applicable.
  • the fluid is located in a closed space of the heat pipe 8.
  • the fluid is always in thermodynamic equilibrium. Increasing the temperature Tem ⁇ , in this case disposed adjacent to the switch contact 18 at one projecting end 12 of the heat pipe 8, is, the fluid begins to boil on this hot side. The resulting vapor is transported to the colder side at En ⁇ de 10 of the thermal tube 8. There, the fluid condenses and releases the heat again.
  • the transport of the fluid can take place on the basis of capillary forces prevailing in the heat pipe 8.

Landscapes

  • Thermal Insulation (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

L'invention concerne un composant électrique comprenant un élément central électroconducteur (4) et une isolation électrique (6) entourant ce dernier au moins en partie et sans contact. L'invention se caractérise par le fait qu'un caloduc (8) est entouré au moins en partie à une extrémité (10) par l'isolation (6) et fait saillie au moins en partie de l'isolation (6), la partie (12) du caloduc (8) faisant saillie de l'isolation (6) faisant saillie plus près de l'élément central (4) que de l'isolation (6).
EP15733413.7A 2014-07-07 2015-06-25 Composant électrique comprenant un élément central électroconducteur Withdrawn EP3140845A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014213100.6A DE102014213100A1 (de) 2014-07-07 2014-07-07 Elektrisches Bauteil mit einem elektrisch leitenden zentralen Bauelement
PCT/EP2015/064408 WO2016005197A1 (fr) 2014-07-07 2015-06-25 Composant électrique comprenant un élément central électroconducteur

Publications (1)

Publication Number Publication Date
EP3140845A1 true EP3140845A1 (fr) 2017-03-15

Family

ID=53498992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15733413.7A Withdrawn EP3140845A1 (fr) 2014-07-07 2015-06-25 Composant électrique comprenant un élément central électroconducteur

Country Status (6)

Country Link
US (1) US9997302B2 (fr)
EP (1) EP3140845A1 (fr)
CN (1) CN106575587B (fr)
CA (1) CA2954315C (fr)
DE (1) DE102014213100A1 (fr)
WO (1) WO2016005197A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014213100A1 (de) 2014-07-07 2016-01-07 Siemens Aktiengesellschaft Elektrisches Bauteil mit einem elektrisch leitenden zentralen Bauelement
CN106531545B (zh) * 2016-11-15 2018-03-13 通用森源（深圳）电气有限公司 一种高压真空断路器
CN106356241B (zh) * 2016-11-15 2018-06-26 通用森源（深圳）电气有限公司 一种高稳定性高压真空断路器
CN112216533B (zh) * 2020-10-29 2022-06-14 阜阳中骄智能科技有限公司 一种基于电弧屏蔽结构的触点防护机构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129308A (en) * 1961-04-22 1964-04-14 Nippon Electric Co Vacuum circuit breaker having buffering means in relatively stationary electrode structure
DE2238987A1 (de) * 1972-08-08 1974-02-28 Bbc Brown Boveri & Cie Fluessigkeitsarmer leistungsschalter
US4005297A (en) * 1972-10-18 1977-01-25 Westinghouse Electric Corporation Vacuum-type circuit interrupters having heat-dissipating devices associated with the contact structures thereof
US3973096A (en) * 1973-03-22 1976-08-03 Westinghouse Electric Corporation Adjustable circuit-interrupter with improved support means
US4650939A (en) * 1986-01-24 1987-03-17 Westinghouse Electric Corp. Vacuum circuit interrupter having heat exchanger for temperature control
DE3806921A1 (de) * 1988-03-03 1989-09-14 Calor Emag Elektrizitaets Ag Vakuumschalterkammer
EP1672655A1 (fr) * 2004-12-20 2006-06-21 Abb Research Ltd. Interrupteur à vide avec une intensité de courant admissible élevée
DE102005011405B3 (de) 2005-03-03 2006-11-16 Siemens Ag Schaltgerät mit Wärmerohr
WO2009079871A1 (fr) * 2007-12-07 2009-07-02 Abb (China) Limited Disjoncteur avec moyens de dissipation thermique
KR100996791B1 (ko) * 2008-04-10 2010-11-25 엘에스산전 주식회사 진공차단기의 주회로 단자 어셈블리
DE102014213100A1 (de) 2014-07-07 2016-01-07 Siemens Aktiengesellschaft Elektrisches Bauteil mit einem elektrisch leitenden zentralen Bauelement

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2016005197A1 *

Also Published As

Publication number Publication date
DE102014213100A1 (de) 2016-01-07
CN106575587B (zh) 2019-04-12
WO2016005197A1 (fr) 2016-01-14
CN106575587A (zh) 2017-04-19
CA2954315A1 (fr) 2016-01-14
US9997302B2 (en) 2018-06-12
US20170207036A1 (en) 2017-07-20
CA2954315C (fr) 2019-02-12

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