CN103247995A - Terminal device of ultralow temperature apparatus - Google Patents
Terminal device of ultralow temperature apparatus Download PDFInfo
- Publication number
- CN103247995A CN103247995A CN2013100376354A CN201310037635A CN103247995A CN 103247995 A CN103247995 A CN 103247995A CN 2013100376354 A CN2013100376354 A CN 2013100376354A CN 201310037635 A CN201310037635 A CN 201310037635A CN 103247995 A CN103247995 A CN 103247995A
- Authority
- CN
- China
- Prior art keywords
- ultralow temperature
- terminal installation
- liquid nitrogen
- eduction rod
- temperature equipment
- 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.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 129
- 239000004020 conductor Substances 0.000 claims abstract description 87
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 59
- 229920000642 polymer Polymers 0.000 claims abstract description 43
- 238000009434 installation Methods 0.000 claims description 49
- 239000002184 metal Substances 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 238000009413 insulation Methods 0.000 claims description 24
- 239000003822 epoxy resin Substances 0.000 claims description 11
- 229920000647 polyepoxide Polymers 0.000 claims description 11
- 239000012530 fluid Substances 0.000 description 13
- 238000011049 filling Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 230000005684 electric field Effects 0.000 description 8
- 229920001971 elastomer Polymers 0.000 description 7
- 239000005060 rubber Substances 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920005573 silicon-containing polymer Polymers 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention provides a terminal device of an ultralow temperature apparatus. The cable terminal device (100) comprises a conductor eduction bar (111); a hard insulating cylinder (112) disposed at the periphery of the conductor eduction bar (111); and a polymer-coated body (113) which is integrally disposed at the periphery of the insulating cylinder (112) and is provided with a plurality of separated folded parts (113a) at the periphery in a length direction. The conductor eduction bar (111) is a hollow pipe, and liquid nitrogen (150) is injected into a part of or all of the hollow part (111a).
Description
Technical field
The present invention relates to the terminal installation of ultralow temperature equipment such as a kind of hyperconductive cable.
Background technology
The terminal installation of ultralow temperature equipment such as hyperconductive cable, it has an end and is electrically connected with ultralow temperature equipment, and the other end is drawn out to the conductor eduction rod of normal temperature portion.Usually by constituting as the copper of electricity with the good conductor of heat, therefore (being ultralow temperature equipment) flows into heat to the conductor eduction rod from the normal temperature zone to the ultralow temperature zone by this conductor eduction rod.When the inflow by this heat makes the temperature of ultralow temperature equipment be higher than predetermined temperature, will cause the superconduct characteristic to reduce.Therefore, in the terminal installation of ultralow temperature equipment, importantly make and go into as far as possible little by the hot-fluid of this conductor eduction rod.
For example in patent documentation 1-3, disclose and be used for the structure that inhibition is gone into by the hot-fluid of conductor eduction rod.
In patent documentation 1, disclose and a kind ofly around conductor eduction rod (conductor 2 in the patent documentation 1), vacuum heat-insulating layer has been set, thereby made the structure of terminal part of the ultralow temperature cable of the side face of conductor eduction rod (conductor) and the thermal insulation of normal temperature zone isolation.Thus, can make from the heat that flows on every side of conductor eduction rod (conductor) to diminish, can make by the hot-fluid to ultralow temperature equipment (in patent documentation 1, being the ultralow temperature cable) of conductor eduction rod (conductor) to go into to diminish.
In patent documentation 2, disclose that a kind of temperature gradient portion with conductor eduction rod (conductor introduction 47 in the patent documentation 2) and stress cone are whole to be arranged in a vacuum, thereby can further suppress the structure of going into to the hot-fluid in ultralow temperature zone from the outside.And then, in patent documentation 2, a kind of structure of terminal jockey of ultralow temperature cable is disclosed, it adopts the good liquid nitrogen of electrical insulating property to make the connecting portion electric insulation of conductor eduction rod (conductor introduction) and ultralow temperature equipment (being hyperconductive cable in the citing document 2), and utilize vacuum to make temperature gradient portion electric insulation under the state that is provided with stress cone around it of conductor eduction rod (conductor introduction), thereby can obtain stable electrical insulation capability with small-scale structure.
Following structure is disclosed in patent documentation 3, that is: the conductor that will be equivalent to the conductor eduction rod is inserted and to be led to the inside of metal tube, cooling fluid or gas are filled in inside at this metal tube, and form the heat insulation layer of vacuum or employing heat-insulating material at this metal tube, thereby prevent the temperature rising of conductor and the damage of stress cone.
A kind of terminal constructions of ultralow temperature equipment that is drawn out to the conductor eduction rod (conductor portion) of normal temperature portion from ultralow temperature portion that has is disclosed in patent documentation 4, this conductor eduction rod (conductor portion) has hollow tube, fills the structure of the gas that helium etc. do not liquefy under ultralow temperature in the confined space of hollow tube.Thus, in patent documentation 4, prevent under ultralow temperature, producing the liquefaction thing in bush inside, and prevent in the space in space part in become negative pressure and the reduction of the insulation property brought.
The prior art document
[patent documentation 1] Japan opens flat 2-30232 communique in fact
[patent documentation 2] Japanese kokai publication hei 8-196029 communique
[patent documentation 3] Japan opens clear 54-8698 communique in fact
[patent documentation 4] TOHKEMY 2002-280628 communique
But, the terminal jockey of the vacuum insulation type of the ultralow temperature cable of patent documentation 1 is the structure that first half exposed to weather, the Lower Half of stress cone is positioned at the ultralow temperature zone, therefore, go into greatlyyer by the hot-fluid of stress cone, be difficult to make the hot-fluid from the outside to go into enough little.In addition, since big in the temperature difference of stress cone inside, might produce the crackle that thermal deformation causes at stress cone, aspect electrical insulating property, also have problems.In addition, the stress cone of patent documentation 1 is made by rubber, and the convex edge of flange is by in the stress cone of the rubber system of burying underground.Therefore, even metal flange is fixed on a portion, because rubber is elastomer, therefore might mechanical property and unstable.
In addition, in the terminal jockey of the ultralow temperature cable of patent documentation 2, stress cone is exposed to weather not, is located in the vacuum in insulated tube and vacuum tank, therefore compares with patent documentation 1, can make the hot-fluid from the outside to the ultralow temperature zone go into to diminish.Therefore but the periphery of stress cone is taken as vacuum insulation, and to compare insulation property poor with insulating oil, therefore compares with the insulation oil condition, need make the beeline of surface discharge long.In addition, the insulated tube that need be made by chinaware in the periphery setting of stress cone.Therefore, there is the such problem of terminal installation maximization.In addition, have that number of spare parts is many, the assembling of terminal installation also needs such problem of time.
In addition, in the terminal part of the ultralow temperature cable of patent documentation 3 etc., the conductor of the braiding rope form that is equivalent to the conductor eduction rod is inserted led in metal tube inside, thereby the normal temperature location that prevents stress cone produces be full of cracks.But, need insulated tube be set in the periphery of stress cone equally with patent documentation 2, there is the such problem of terminal installation maximization.In addition, have that number of spare parts is many, the assembling of terminal installation needs such problem of time.
In addition, in patent documentation 4, similarly insulator (insulated tube) need be set in the periphery of lining with patent documentation 2 and patent documentation 3, have the such problem of terminal installation maximization.And then, in patent documentation 4, make the lining insulation by in insulator, filling insulating oil.But, making with insulating oil when insulating in the insulator, for insulating oil can not make the insulator breakage because ground connection etc. expands yet, and air layer need be set on insulating oil.Owing to have this air layer, then go into still to become problem to the hot-fluid in ultralow temperature zone.In addition, also becoming miscellaneous aspect the constructions such as work of filling insulating oil.
In patent documentation 2-patent documentation 4, all need to make insulated tube to cover in the outside, therefore become the structure that between conductor eduction rod periphery and insulated tube inside, has the gap.This gap is subjected to the influence of heat easily via the conductor eduction rod, and then might make hot-fluid excess of imports low-temperature region.
In addition, be employing SF
6When insulating gass such as gas make the terminal installation of the ultralow temperature equipment of insulation in the insulated tube, for fear of SF
6Gas becomes negative pressure and the attendant equipment that Pressure gauge waits to manage need be set.Therefore, correspondingly number of spare parts becomes many, for the expensive cost of the terminal installation of ultralow temperature equipment.
Summary of the invention
The present invention considers above problem and makes, and its purpose is to provide a kind of terminal installation that can fully suppress the simple and easy small-scale structure of going into to the hot-fluid of ultralow temperature equipment such as hyperconductive cable.
A mode of the terminal installation of ultralow temperature equipment of the present invention is: a kind of terminal installation of ultralow temperature equipment, it is connected with ultralow temperature equipment, and having the conductor eduction rod that is drawn out to the normal temperature zone from the ultralow temperature zone, the terminal installation of this ultralow temperature equipment comprises: the conductor eduction rod; Insulating cylinder, it is made of epoxy resin, and is arranged at the periphery of described conductor eduction rod; Polymer lining body, it is arranged on the periphery of described insulating cylinder integratedly, and is formed with a plurality of pleat portion along its length in himself periphery with separating; And lower bush portion, it is made of described epoxy resin, and connection is arranged on the described insulating cylinder, wherein, described insulating cylinder is configured in the normal temperature zone, and described lower bush portion is configured in the ultralow temperature zone, and described conductor eduction rod is hollow tube, in the hollow bulb of described hollow tube, be filled with liquid nitrogen from the bottom of described hollow tube to the position corresponding with the bottom of the conductive layer on described lower bush portion surface at least.
A mode of the terminal installation of ultralow temperature equipment of the present invention is: described lower bush portion has the bell oral area that is formed with described conductive layer on the surface, and described liquid nitrogen is filled to the position that described bell oral area is soaked in the periphery of described lower bush portion.
A mode of the terminal installation of ultralow temperature equipment of the present invention is: expose from described lower bush portion the bottom of described hollow tube, and the part that this of described hollow tube exposes has liquid nitrogen inflow portion.
A mode of the terminal installation of ultralow temperature equipment of the present invention is: be embedded with shielded metal spare at described insulating cylinder.
A mode of the terminal installation of ultralow temperature equipment of the present invention is: be provided with heat insulation layer between described epoxy resin and the described conductor eduction rod.
A mode of the terminal installation of ultralow temperature equipment of the present invention is: the inner surface at described hollow tube is formed with jog.
A mode of the terminal installation of ultralow temperature equipment of the present invention is: described ultralow temperature equipment is hyperconductive cable.
According to the present invention, utilize liquid nitrogen that the conductor eduction rod as hollow tube is cooled off internally, therefore can prevent from reliably making heat flow into ultralow temperature equipment from the normal temperature zone by this hollow tube (being the conductor eduction rod).In addition, be not the structure that covers the insulated tube of hollow as in the past, thereby can realize small-sized terminal installation.Therefore, can realize fully to suppress the terminal installation of the simple and easy small-scale structure of going into to the hot-fluid of ultralow temperature equipment.
Description of drawings
Fig. 1 is the figure of structure of the hyperconductive cable terminal installation of expression execution mode.
Fig. 2 is the figure of structure of the hyperconductive cable terminal installation of other execution modes of expression.
Label declaration
100 cable termination devices
110 polymer sleeve pipes
111 conductor eduction rods (hollow tube)
The 111a hollow bulb
The 111b lid
112 insulating cylinders
113 polymer lining body
114 cover metal parts
The 114a cylindrical portion
The 114b embedding part
The 114c flange part
117 lower bush portions
The 117a cylindrical portion
117b circular cone shape portion
The bell oral area of 117c
118 conductive layers
120 connecting portions
130 liquid nitrogen tanks
140 vacuum tanks
150 liquid nitrogen
170 heat insulation layers
180 inboard metal tubes
190 outside metal tubes
200 hyperconductive cables
300 valves
Embodiment
Below, explain embodiments of the present invention with reference to accompanying drawing.
Fig. 1 is the longitudinal sectional drawing as the structure of the hyperconductive cable terminal installation of the terminal installation of ultralow temperature equipment of expression embodiment of the present invention.Be connected with hyperconductive cable 200 as ultralow temperature equipment as the hyperconductive cable terminal installation 100 of the terminal installation of ultralow temperature equipment.
Hyperconductive cable terminal installation 100 comprises polymer sleeve pipe 110, connecting portion 120, liquid nitrogen tank 130 and vacuum tank 140.
Connecting portion 120 is the parts be used to the conductor eduction rod 111 that makes polymer sleeve pipe 110 and hyperconductive cable 200 electrical connections.In the present embodiment, connecting portion 120 conductor coupling portion 122 that has for the flexible bonding conductor 121 that is connected with conductor eduction rod 111 and be used for making the conductor of flexible bonding conductor 121 and hyperconductive cable 200 to be electrically connected.The structure of conductor coupling portion 122 can be known structure.By injecting liquid nitrogen 150 from pipe arrangement 160, thus liquid nitrogen tank 130 in storage liquid nitrogen 150.Liquid nitrogen tank 130 is taken in the terminal part of bottom (described later lower bush portion 117), connecting portion 120 and the hyperconductive cable 200 of polymer sleeve pipe 110, and storage can be immersed the liquid nitrogen 150 of the amount of these parts.And then, be provided with vacuum tank 140 in the outside of liquid nitrogen tank 130.
Insulating cylinder 112 is formed by the high epoxy resin of mechanical strength.Polymer lining body 113 is formed by material, for example silicone polymer macromolecule insulating material such as (silicone rubbers) of electrical insulation capability excellence.Conductor eduction rod 111, insulating cylinder 112(and lower bush described later portion 117) and polymer lining body 113 be integrally formed by mould.
Owing to be provided with polymer lining body 113 integratedly in the periphery of insulating cylinder 112, therefore to compare with chinaware insulated tube in the past, polymer sleeve pipe 110 is in light weight and be difficult to breakage, and operation can make operation increase substantially easily.In addition, owing to do not need insulating oil or insulating gas, therefore can realize the harmony of environment.And then, for polymer sleeve pipe 110, when being formed polymer lining body 113 by silicon-oxygen polymer, because the water proofing property of silicone polymer can make stained voltage-resistent characteristic improve.
In the present embodiment, polymer sleeve pipe 110 has shielded metal spare 114.Shielded metal spare 114 is arranged to concentric shape with conductor eduction rod 111.Shielded metal spare 114 comprises: be embedded in cylindrical portion 114a the insulating cylinder 112 in the mode of only exposing outer surface from insulating cylinder 112; Connect and to be arranged on the upper end of cylindrical portion 114a and to be embedded in embedding part 114b in the insulating cylinder 112; And from the side face of cylindrical portion 114a to radial direction foreign side outstanding flange part 114c.
It is circular-arc that the upper end of shielded metal spare 114 (being the upper end of embedding part 114b here) forms the cross section, and thus, the electric field in the polymer sleeve pipe 110 is concentrated and relaxed.Be provided with a plurality of screw hole (not shown) at flange part 114c, be provided with not shown seals such as O ring at the lower surface of flange part 114c.
In the present embodiment, to the screw hole insertion screw (not shown) of flange part 114c, at the upper surface of vacuum tank 140 polymer sleeve pipe 110 is installed airtightly.Thus, by being embedded with shielded metal spare 114(embedding part 114b in the formed insulating cylinder 112 of the mechanical strength epoxy resin higher than rubber), therefore with the comparing with the fixing situation of the flange in the stress cone that is embedded in rubber system of patent documentation 1, can the polymer sleeve pipe be installed with stable status mechanically.
And then, form liquid nitrogen tank 130 in the inside of vacuum tank 140.In the present embodiment, the polymer sleeve pipe side end face of liquid nitrogen tank 130 is by not shown seals such as O ring, is fixed in the polymer sleeve pipe side inner side end of vacuum tank 140 airtightly with screw etc.Thus, polymer sleeve pipe 110 be arranged in gas than flange part 114c by a last side, be positioned at liquid nitrogen tank 130 than a flange part 114c side on the lower.
In addition, another of liquid nitrogen tank 130 is distolateral, gets final product be formed into the predetermined portions of ultralow temperature equipment (being hyperconductive cable 200) airtightly here with known structure till.Another of vacuum layer 140 is distolateral also to be same.Remain vacuum state between the inner surface of the outside of liquid nitrogen tank 130 and vacuum tank 140.
And then, also can be that at insulating cylinder 112 and polymer lining body 113 at the interface, the mode to electrically contact with shielded metal spare 114 as required forms the electric field relaxation layer (not shown) of necessary length.This electric field relaxation layer for example gets final product to form as lower floor, that is: the dielectric constant of the ZnO layer that elastomeric material filling Zinc oxide powder is formed, the rubber of having filled electroconductive stuffings such as carbon black etc. is the high-dielectric constant layer more than 10.In addition, to the high-tension terminal applies polymer sleeve pipe 110 more than the 110kV level time, because the electric field relaxation layer is arranged polymer sleeve pipe 110 is diminished, and then polymer sleeve pipe 110 weight are lightened, be useful therefore.
The flange part 114c side on the lower than shielded metal part 114 at polymer sleeve pipe 110 is formed with lower bush portion 117.In the present embodiment, when polymer sleeve pipe 110 was installed in the upper surface of vacuum tank 140, lower bush portion 117 was configured in the liquid nitrogen tank 130.117 connections of lower bush portion are arranged on the insulating cylinder 112.The main body of lower bush portion 117 is integrally formed by identical epoxy resin with insulating cylinder 112, and its center disposes conductor eduction rod 111.Lower bush portion 117 comprises the constant cylindrical portion 117a of external diameter, be the bell oral area 117c on the circumference of the groove of the U word shape upper end that is formed on the 117b of circular cone shape portion towards the 117b of circular cone shape portion that the below external diameter diminishes and with the cross section.In addition, from the lower surface of bell oral area 117c up to holding flange portion 114, be formed with electrically-conducting paints such as applying silver coating etc. and the conductive layer 118 that forms.This conductive layer 118 has the function as the shielding layer of lower bush portion 117.
In groove, liquid nitrogen 150 is stored at least the position of bottom (end of the ultralow temperature equipment side of the conductive layer 118) immersion of the concentrated conductive layer 118 of electric field.Corresponding therewith, in the hollow bulb 111a of hollow tube 111, liquid nitrogen is filled into the corresponding position, bottom of conductive layer 118 on lower bush portion 117 surfaces from the bottom of hollow tube 111 at least till.In the present embodiment, bell oral area 117c becomes the bottom of conductive layer 118, so the electric field at lower bush portion 117 places concentrates on the bottom of bell oral area 117c.Thus, relax in order to make this electric field, liquid nitrogen 150 is stored into till the position of bell oral area 117c immersion.Liquid nitrogen 150 is compared the insulation property height with vacuum insulation, therefore by soaking the bell oral area 117c that electric field is concentrated with liquid nitrogen 150, can make the structure of the stable lower bush portion 117 of electricity.
In addition, the covering of side of ultralow temperature zone that stores liquid nitrogen 150 is not to be formed by metal parts (the downside convex edge of the flange of patent documentation 1) as patent documentation 1, but formed by the bell oral area 117c that has conductive layer 118 on the surface.Because it is big with the difference of the coefficient of linear expansion of the epoxy resin that forms lower bush portion 117 to form the metal parts of shielded metal spare 114, therefore and can't help shielded metal spare 114 and form covering of ultralow temperature zone sides, and formed by the bell oral area 117c that has conductive layer 118 on the surface, thereby can prevent the damage of epoxy resin.
Except said structure, conductor eduction rod 111 has hollow bulb 111a at least, and its hollow tube by conductivity forms in the present embodiment.Conductor eduction rod 111 for example is that material forms with copper.One side of conductor eduction rod 111 exposes from insulating cylinder 112, and the opposing party exposes from lower bush portion 117.In the present embodiment, be provided with the liquid nitrogen side connecting portion 111c of conductor eduction rod 111 in the lower end of this opposing party's conductor eduction rod 111, in order to can be connected with a terminal of flexible bonding conductor 121.The liquid nitrogen side connecting portion 111c of the conductor eduction rod 111 in the present embodiment has reserved in the lower surface of hollow tube 111 under the state in gap (liquid nitrogen throughput 111d described later) of liquid nitrogen circulation, makes by welding etc. that terminal is integrated to be formed.
In addition, the structure of the liquid nitrogen side connecting portion 111c of conductor eduction rod 111 is not limited thereto, and is electrically connected with hyperconductive cable 200 thereby for example also can insert metal joint in hollow tube 111.At this moment, the bottom of hollow tube 111 becomes liquid nitrogen side connecting portion 111c.In addition, has liquid nitrogen throughput 111d in the lower end of conductor eduction rod 111 from lower bush portion 117 outstanding parts.Liquid nitrogen throughput 111d both can be arranged on the structure (only flowing into the structure of liquid nitrogen from the hollow bulb 111a lower end of hollow tube 111) of the lower surface of hollow tube 111, also can be the structure that is provided with the hole in the periphery of the part of giving prominence to from the lower bush portion 117 of hollow tube 111.
In addition, the upper end of conductor eduction rod (hollow tube) 111 is closed by lid 111b, thereby hollow bulb 111a is sealed.Thus, have liquid nitrogen 150 as the hollow bulb 111a of the conductor eduction rod 111 of hollow tube at lower position, there is vaporization nitrogen in the position up.Consequently, conductor eduction rod 111 is sufficiently cooled from the inboard.
As seen from the figure, flange part 114c than shielded metal part 114 in the polymer sleeve pipe 110 is configured in the normal temperature zone by a last side, but conductor eduction rod (hollow tube) 111 is cooled internally, can prevent reliably that therefore heat from flowing into from the normal temperature zone to the hyperconductive cable 200 as the ultralow temperature zone by conductor eduction rod (hollow tube) 111.
In addition, in the terminal installation of patent documentation 2 ~ 4 disclosed existing ultralow temperature equipment, the outside at stress cone or lining, the insulated tube that needs the chinaware system that covers, but in the present embodiment, be the structure that periphery at insulating cylinder 112 forms the polymer sleeve pipe 110 of polymer lining body 113, therefore do not need insulated tube, can provide and compare with the insulated tube of chinaware system that number of spare parts is few, the terminal installation of the ultralow temperature equipment of electric performance stablity.And then, different with the terminal installation at the existing ultralow temperature equipment of the outer side covers insulated tube of stress cone or lining, in the present embodiment, the gap between conductor eduction rod periphery and insulated tube inside does not exist, and therefore can prevent from going into to the hot-fluid in ultralow temperature zone.The consumption figure that can suppress thus, liquid nitrogen 150.In addition, in insulated tube in the past, when the assembling terminal installation, need insulating gas (SF
6Gas), the filling of the dielectric of insulation wet goods, in the present embodiment, be the structure at the polymer sleeve pipe 110 of the integrally formed polymer of the periphery of insulating cylinder 112 lining body 113, the filling operation of the medium that therefore do not need to insulate can shorten the built-up time of terminal installation.In addition, can save and in existing insulated tube, enclose insulating gas (SF
6Gas) time, manage to avoid this gas to become the required optional equipment of negative pressure, thereby can also reduce the cost that the ultralow temperature terminal installation is set.
In addition, in the present embodiment, in the normal temperature zone, be not with the structure of the direct exposed to weather of stress cone as patent documentation 1, and be suitable for the polymer sleeve pipe that has the stable performance of electricity as insulation in the air, therefore can provide the ultralow temperature terminal installation with the stable performance of electricity.
And then, in the present embodiment, for the length of the length direction of the cylindrical portion 117b of lower bush portion 117, be taken as the long-neck structure that can between the flange part 114c of the upper surface of liquid nitrogen 150 and polymer sleeve pipe 110, be provided with the predetermined this degree in space.In this predetermined space, same with the position that ratio liquid nitrogen at the hollow bulb 111a of conductor eduction rod 111 partly leans on, there is vaporization nitrogen.In addition, when the device that makes the liquid nitrogen circulation is set in addition, also can be taken as and predetermined space be set and to the structure of whole filling liquid nitrogen 150 of liquid nitrogen tank 130.Under the situation of present embodiment, utilize the vaporization nitrogen in predetermined space, can relax the temperature gradient from the ultralow temperature zone to the normal temperature zone in the polymer sleeve pipe 110.
As described above, utilize hollow tube to constitute conductor eduction rod 111, insert liquid nitrogen 150 at the hollow bulb of hollow tube, thereby can realize fully suppressing to the hot-fluid of hyperconductive cable 200 cable termination devices 100 that go into, simple and easy small-scale structure.
In addition, except above-mentioned execution mode, as shown in Figure 2, also can form heat insulation layer 170 at the outer circumferential side of conductor eduction rod (hollow tube) 111.Heat insulation layer 170 is formed on from the upper end of insulating cylinder 112 up to the lower end of lower bush portion 117.In the execution mode of Fig. 2, heat insulation layer 170 has structure outstanding from the upper end of insulating cylinder 112 and that give prominence to from the lower end of lower bush portion 117 lower end.The length of the length direction of heat insulation layer 170 forms shorter than the length of conductor eduction rod 111.Like this, can further suppress heat and flow into the ultralow temperature zone via conductor eduction rod (hollow tube) 111 from the normal temperature zone, therefore can suppress the consumption of liquid nitrogen 150.
In addition, in the present embodiment, adopted in the interior week of inboard metal tube 180 and inserted the structure that has led to conductor eduction rod (hollow tube) 111, outside metal tube 190 diameter is bigger in the outside of inboard metal tube 180 is configured to concentric shape, spatial portion between inboard metal tube 180 and the outside metal tube 190, is discharged inner air and is formed the heat insulation layer 170 that vacuum constitutes via valve 300 by airtight obturation up and down.In addition, also valve 300 can be set and airtight as thermos under vacuum state.At this moment, also can be taken as and inboard metal tube 180 is not set and airtight structure about making between the periphery of outside metal tube 190 and conductor eduction rod 111.In addition, heat insulation layer 17 is not limited to the structure that only forms under vacuum, also can be by the adiabatic material of powder filler powder, and purging is that vacuum forms.
In addition, the mode of Fig. 1, Fig. 2 all can be by cutting out screw thread in the inner surface total length of hollow tube 111 structure (structure of so-called negative thread) etc. arranges jog.Because this jog, the surface area of hollow tube 111 inner surfaces increases, and therefore heat conducting efficient improves.Therefore, even not to conductor eduction rod 111(hollow tube) hollow bulb 111a all fill liquid nitrogen 150, the liquid nitrogen 150 of bottom that also can be by conductor eduction rod 111 is cooled to the top of conductor eduction rod 111 more expeditiously.In addition, total length at hollow tube 111 arranges jog, this is efficient aspect processing, but from improving the functional point of view of heat conducting efficient, also can be the structure that jog is set in the part (being the part of hollow tube 111) of filling vaporization nitrogen.
In addition, in the above-described embodiment, the part of the hollow bulb 111a that has illustrated at conductor eduction rod (hollow tube) 111 is filled with the situation of liquid nitrogen 150, and (namely there is liquid nitrogen 150 in the lower position at hollow bulb 111a, there is the situation of vaporization nitrogen in the position up), but also can be to whole filling liquid nitrogen 150 of hollow bulb 111a.For example, insert the ascending pipe that is common to hollow bulb 111a injection liquid nitrogen 150 at lid 111b, inject liquid nitrogen from this ascending pipe, then can be to whole filling liquid nitrogen 150 of hollow bulb 111a.
In addition, in the above-described embodiment, the top of conductor eduction rod (hollow tube) 111 is provided with covers 111b, but also can remove the terminal installation that covers 111b and other are set, and makes liquid nitrogen 150 circulate in these other terminal installation thereby form.At this moment, the whole middle liquid nitrogen 150 of filling of hollow bulb 111a.
In addition, in the above-described embodiment, illustrated that polymer sleeve pipe 110 is fixed on the situation of the upper surface of vacuum tank 140, but also can be taken as the structure that the upper end of liquid nitrogen tank 130 is extended to the radial direction inboard, and be taken as the structure of end face fixed polymer sleeve pipe 110 thereon.
In addition, in the above-described embodiment, the situation that is formed the flange part of polymer sleeve pipe 110 by the flange part 114c of shielded metal spare 114 has been described, has formed flange part but also can be taken as by insulating cylinder 112, and the structure of fixing with the fixing metal part from the outside.
And then, in the above-described embodiment, the terminal installation situation that the present invention is applied as hyperconductive cable has been described, but the present invention also can be as the terminal installation of the ultralow temperature equipment beyond the hyperconductive cable.Use other ultralow temperature equipment of the present invention as being fit to, superconducting magnetic energy storage system (SMES:Superconducting magnetic energy storage system), superconductive current limiter etc. are for example arranged.
Will be understood that this disclosed execution mode is illustration in all respects and is not for restriction.Scope of the present invention is not above-mentioned explanation and shown by claims, and intention is to comprise the implication that is equal to claims and all changes in the protection range.
The Japanese patent application laid of submitting on February 3rd, 2012 is willing to that the specification, the drawing and description that comprise for the 2012-021884 number disclosure in making a summary all quotes in the application.
Claims (7)
1. the terminal installation of a ultralow temperature equipment, it is connected with ultralow temperature equipment, and has the conductor eduction rod that is drawn out to the normal temperature zone from the ultralow temperature zone, and the terminal installation of this ultralow temperature equipment comprises:
The conductor eduction rod;
Insulating cylinder, it is made of epoxy resin, and is arranged at the periphery of described conductor eduction rod;
Polymer lining body, it is arranged on the periphery of described insulating cylinder integratedly, and is formed with a plurality of pleat portion along its length in himself periphery with separating; And
Lower bush portion, it is made of described epoxy resin, and connects and to be arranged on the described insulating cylinder,
Wherein,
Described insulating cylinder is configured in the normal temperature zone,
Described lower bush portion is configured in the ultralow temperature zone,
Described conductor eduction rod is hollow tube,
In the hollow bulb of described hollow tube, be filled with liquid nitrogen from the bottom of described hollow tube to the position corresponding with the bottom of the conductive layer on described lower bush portion surface at least.
2. the terminal installation of ultralow temperature equipment as claimed in claim 1, wherein,
Described lower bush portion has the bell oral area that is formed with described conductive layer on the surface,
Described liquid nitrogen is filled to the position that described bell oral area is soaked in the periphery of described lower bush portion.
3. the terminal installation of ultralow temperature equipment as claimed in claim 1 or 2, wherein,
Expose from described lower bush portion the bottom of described hollow tube,
The part that this of described hollow tube exposes has liquid nitrogen inflow portion.
4. the terminal installation of ultralow temperature equipment as claimed in claim 1 or 2, wherein,
Be embedded with shielded metal spare at described insulating cylinder.
5. the terminal installation of ultralow temperature equipment as claimed in claim 1 or 2, wherein,
Be provided with heat insulation layer between described epoxy resin and the described conductor eduction rod.
6. the terminal installation of ultralow temperature equipment as claimed in claim 1 or 2, wherein,
Inner surface at described hollow tube is formed with jog.
7. the terminal installation of ultralow temperature equipment as claimed in claim 1 or 2, wherein,
Described ultralow temperature equipment is hyperconductive cable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-021884 | 2012-02-03 | ||
| JP2012021884A JP5555729B2 (en) | 2012-02-03 | 2012-02-03 | Terminal equipment for cryogenic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103247995A true CN103247995A (en) | 2013-08-14 |
Family
ID=48927304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100376354A Pending CN103247995A (en) | 2012-02-03 | 2013-01-31 | Terminal device of ultralow temperature apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5555729B2 (en) |
| CN (1) | CN103247995A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485631A (en) * | 2014-12-12 | 2015-04-01 | 王凡业 | Cold dielectric superconductive cable end |
| CN108767805A (en) * | 2017-04-07 | 2018-11-06 | 耐克森公司 | Terminal for hyperconductive cable |
| TWI650773B (en) * | 2015-01-28 | 2019-02-11 | 日商昭和電線電纜系統股份有限公司 | Polymer sleeve |
| CN111987685A (en) * | 2020-08-21 | 2020-11-24 | 上海国际超导科技有限公司 | Terminal structure of superconducting cable |
| CN112038035A (en) * | 2020-09-18 | 2020-12-04 | 中国科学院合肥物质科学研究院 | Close-wound superconducting magnet refrigerating device based on interlayer lamination integral heat conduction |
| CN112290243A (en) * | 2020-10-29 | 2021-01-29 | 广东电网有限责任公司电力科学研究院 | High-voltage insulation current lead structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102371185B1 (en) * | 2015-10-29 | 2022-03-04 | 한국전기연구원 | Terminal device for superconducting cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548698U (en) * | 1977-06-21 | 1979-01-20 | ||
| CN1080087A (en) * | 1992-06-09 | 1993-12-29 | 中国科健有限公司 | Plugable coaxial air cooling current lead for superconductive magnet |
| CN1457541A (en) * | 2001-02-13 | 2003-11-19 | 住友电气工业株式会社 | Terminal structure of extreme-low temperature equipment |
| JP2005033964A (en) * | 2003-07-11 | 2005-02-03 | Furukawa Electric Co Ltd:The | Terminal connection portion for extremely low temperature cable |
| CN1628403A (en) * | 2002-04-08 | 2005-06-15 | 昭和电线电缆株式会社 | Polymer jacket tube and cable terminal connector using the same |
| JP2010153223A (en) * | 2008-12-25 | 2010-07-08 | Swcc Showa Cable Systems Co Ltd | Polymer bushing insulator and mounting structure of polymer bushing insulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4922077B2 (en) * | 2007-06-15 | 2012-04-25 | 昭和電線ケーブルシステム株式会社 | Electrical device energization member and electrical device connection using the same |
-
2012
- 2012-02-03 JP JP2012021884A patent/JP5555729B2/en not_active Expired - Fee Related
-
2013
- 2013-01-31 CN CN2013100376354A patent/CN103247995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548698U (en) * | 1977-06-21 | 1979-01-20 | ||
| CN1080087A (en) * | 1992-06-09 | 1993-12-29 | 中国科健有限公司 | Plugable coaxial air cooling current lead for superconductive magnet |
| CN1457541A (en) * | 2001-02-13 | 2003-11-19 | 住友电气工业株式会社 | Terminal structure of extreme-low temperature equipment |
| CN1628403A (en) * | 2002-04-08 | 2005-06-15 | 昭和电线电缆株式会社 | Polymer jacket tube and cable terminal connector using the same |
| JP2005033964A (en) * | 2003-07-11 | 2005-02-03 | Furukawa Electric Co Ltd:The | Terminal connection portion for extremely low temperature cable |
| JP2010153223A (en) * | 2008-12-25 | 2010-07-08 | Swcc Showa Cable Systems Co Ltd | Polymer bushing insulator and mounting structure of polymer bushing insulator |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485631A (en) * | 2014-12-12 | 2015-04-01 | 王凡业 | Cold dielectric superconductive cable end |
| TWI650773B (en) * | 2015-01-28 | 2019-02-11 | 日商昭和電線電纜系統股份有限公司 | Polymer sleeve |
| CN108767805A (en) * | 2017-04-07 | 2018-11-06 | 耐克森公司 | Terminal for hyperconductive cable |
| CN111987685A (en) * | 2020-08-21 | 2020-11-24 | 上海国际超导科技有限公司 | Terminal structure of superconducting cable |
| CN112038035A (en) * | 2020-09-18 | 2020-12-04 | 中国科学院合肥物质科学研究院 | Close-wound superconducting magnet refrigerating device based on interlayer lamination integral heat conduction |
| CN112038035B (en) * | 2020-09-18 | 2022-03-25 | 中国科学院合肥物质科学研究院 | Close-wound superconducting magnet refrigerating device based on interlayer lamination integral heat conduction |
| CN112290243A (en) * | 2020-10-29 | 2021-01-29 | 广东电网有限责任公司电力科学研究院 | High-voltage insulation current lead structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5555729B2 (en) | 2014-07-23 |
| JP2013162607A (en) | 2013-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103247995A (en) | Terminal device of ultralow temperature apparatus | |
| US7729731B2 (en) | Terminal structure of superconducting cable | |
| KR100642538B1 (en) | Terminal structure of extreme-low temperature equipment | |
| EP2572421B1 (en) | A high voltage direct current cable termination apparatus | |
| CN103597686B (en) | Termination case and the manufacture method of this termination case for cable | |
| CN102906955B (en) | High-voltage direct-current cable terminal device | |
| CN104716518B (en) | System and method for submarine cable termination | |
| CN102754296B (en) | Extremely low temperature cable terminal connector | |
| CN108352699A (en) | Cable fitting for high-tension cable to be connected to high potential assembly | |
| CN103038965A (en) | A high voltage direct current cable termination apparatus | |
| JPH0879953A (en) | Terminal for electric cable | |
| KR101190959B1 (en) | Superconducting cable terminal structure | |
| US8178782B2 (en) | High voltage electrical cable assembly | |
| TW201433033A (en) | Terminal apparatus of superconducting device | |
| CN106300216A (en) | Insulation terminal assembly | |
| KR102533134B1 (en) | Termination for a superconducting cable | |
| US20170370188A1 (en) | Heating cable for extraction pipes of viscous hydrocarbons or paraffinic in conventional wells and type tight wells, vertical or directional, with flooded annular in casual or permanent form, suitable for use between low and high fluid pressures ranges | |
| KR102325498B1 (en) | Connecting Box of Superconducting Device | |
| KR100508710B1 (en) | termination structure of super conducting cable | |
| KR102657040B1 (en) | Dead end test equipment for power cable | |
| CN104348129A (en) | Terminal device for ultralow temperature equipment | |
| KR102258894B1 (en) | Joint for mass impregnated cable | |
| RU2349010C1 (en) | Terminal box of superconducting cable | |
| JP2017070126A (en) | Liquid-tight structure, and terminal structure for superconducting cable | |
| KR20180041220A (en) | Transition joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130814 |