CN101799112A - 液态氮供给装置 - Google Patents

液态氮供给装置 Download PDF

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CN101799112A
CN101799112A CN200910222846.9A CN200910222846A CN101799112A CN 101799112 A CN101799112 A CN 101799112A CN 200910222846 A CN200910222846 A CN 200910222846A CN 101799112 A CN101799112 A CN 101799112A
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liquid nitrogen
decompressor
supply lines
valve
bulge
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金春东
李秀吉
张铉万
崔彰烈
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LS Cable and Systems Ltd
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LS Cable Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B12/00Superconductive or hyperconductive conductors, cables, or transmission lines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
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    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02Discharging liquefied gases
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/42Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323Valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/01Pure fluids
    • F17C2221/014Nitrogen
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
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    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033Small pressure, e.g. for liquefied gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146Two-phase
    • F17C2225/0153Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033Small pressure, e.g. for liquefied gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03Heat exchange with the fluid
    • F17C2227/0337Heat exchange with the fluid by cooling
    • F17C2227/0339Heat exchange with the fluid by cooling using the same fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03Heat exchange with the fluid
    • F17C2227/0337Heat exchange with the fluid by cooling
    • F17C2227/0358Heat exchange with the fluid by cooling by expansion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
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Abstract

本发明提供一种超导电缆的减压装置用的液态氮供给装置,其不需要被真空隔热的气液分离器,从而使结构简单、制作成本降低,并能够防止白白消耗过度的气态氮。本发明的超导电缆的减压装置用的液态氮供给装置包括:液态氮供给线路,其延伸设置以使高温高压的液态氮向减压装置流动;迂回管,其从所述液态氮供给线路分支;膨胀部,其设置在所述迂回管上,以使所述液态氮蒸发为气态氮。在此,所述膨胀部能够从流入所述减压装置之前的所述液态氮供给线路的液态氮吸热。

Description

液态氮供给装置
技术领域
本发明涉及液态氮供给装置,详细地说,涉及在超导电缆的减压装置中使用的供给液态氮的液态氮供给装置。
背景技术
所谓超导现象是指在极低温状态下导体中流通电流时的电阻为零的特性,超导电缆是为实现这样的特性而制成的电力电缆。为了实现这样的超导现象,使用液态氮,导体在液态氮所形成的极低的温度下具有超导特性。
这样,液态氮沿着超导电缆在与超导体接触的状态下被填充,但是需要设置在由于液态氮而产生过度的压力时使该压力降低的减压装置。
图1是现有技术的将超导电缆的液态氮送入减压装置的示意图。
如图1所示,为了将液态氮供给至真空状态的减压装置,设置有从液态氮罐(未图示)延伸至减压装置的液态氮供给线路1,在所述液态氮供给线路1上,设置有用于储藏高温高压的液态氮的气液分离器3。沿着液态氮供给线路1流动的液态氮储藏在气液分离器3中,在气液分离器3内生成的气态氮排放至大气中,该液态氮在以大气压状态保持之后流动至减压装置5。
另一方面,在液态氮供给线路1上,阀7设置在气液分离器3的后侧,利用该阀7的动作来供给或遮断流向减压装置5的大气压状态的液态氮。
对于这样构成的现有的超导电缆的减压装置用的液态氮供给装置,为了供给大气压状态的液态氮而需要设置另外独立的气液分离器3,因此,存在结构复杂、设置成本高的缺点。并且,所述气液分离器3是真空隔热箱,价格高。
另外,存在如下的缺点,即,在向气液分离器3中填充液态氮的过程中产生大量的气态氮,需要将这些气态氮排出至大气中,从而维护成本增加。
进一步,流入减压装置5的液态氮的量与压力差成比例,但为了增大液态氮的量,需要将气液分离器3的压力设置得高于减压装置5的压力,或者,在设置于气液分离器3上的用于将内部的气态氮排出至大气中的排气线路9上设置阀,以此提高气液分离器3内部的压力。
专利文献1:大韩民国注册专利公报第10-0590200号。
发明内容
本发明是为了解决上述现有技术的问题点而提出的,目的在于提供一种超导电缆的减压装置用的液态氮供给装置,其不需要被真空隔热的气液分离器,从而使结构简单、制作成本降低,并且能够防止白白消耗过度的气态氮。
用于达到上述目的的本发明的实施方式的减压装置用的液态氮供给装置包括:液态氮供给线路,其延伸设置以使高温高压的液态氮向减压装置流动;迂回管,其从所述液态氮供给线路分支;膨胀部,其设置在所述迂回管上,以使所述液态氮蒸发为气态氮。在此,所述膨胀部能够从流入所述减压装置之前的所述液态氮供给线路的液态氮吸热。
另外,所述液态氮供给线路可以贯通所述膨胀部或者与所述膨胀部相邻配置。
另外,在所述液态氮供给线路上还可以设置使所述液态氮供给线路开闭的第一阀。
另外,在所述迂回管上还可以设置使该迂回管开闭的第二阀。
另外,在所述膨胀部上可以延伸设置排气管。
另外,可以构成为所述第一阀和所述第二阀联动而进行开闭。
另外,所述气态氮处于大气压状态即可。
如上所述,对于本发明的超导电缆的减压装置用的液态氮供给装置,能够与高温高压的液态氮供给线路直接连接,因此不需要另外单独的气液分离器。在使用气液分离器的情况下,平常就需要填充规定量的液态氮,填充在该气液分离器中的液态氮因外部的热量而蒸发,由于该蒸发,增大了液态氮的白白消耗。但是,在本发明的减压装置用的液态氮供给装置中,由于仅在减压时使液态氮蒸发来排出,从而具有能够减少液态氮的白白消耗的优点。
另外,在本发明的超导电缆的减压装置用的液态氮供给装置中,到达阀的前端的压力维持在高压,因此不存在现有那样因压力差引起的设置上的限制。
另外,在本发明的超导电缆的减压装置用的液态氮供给装置中,在迂回管上安装另外单独的阀的情况下,具有通过预先冷却膨胀部而能够迅速地驱动减压装置的优点。
附图说明
图1是表示现有技术的超导电缆的减压装置的示意图。
图2是表示本发明一实施方式的超导电缆的减压装置用的液态氮供给装置的示意图。
图3是表示本发明另一实施方式的超导电缆的减压装置用的液态氮供给装置的示意图。
具体实施方式
下面,参照附图详细说明本发明的超导电缆的减压装置用的液态氮供给装置的实施方式。
图2是表示本发明一实施方式的超导电缆的减压装置用的液态氮供给装置的示意图,图3是表示本发明另一实施方式的超导电缆的减压装置用的液态氮供给装置的示意图。
如图2所示,超导电缆的减压装置用的液态氮供给装置100包括:液态氮供给线路110,使从液态氮罐(未图示)流入的高温高压的液态氮向减压装置150流动;冷媒循环线路120,从该液态氮供给线路110分支。在所述液态氮供给线路110上设置有膨胀部130,所述液态氮供给线路110设置为贯通所述膨胀部130。并且,设置有从所述液态氮供给线路110分支并与所述膨胀部130连接的迂回管140。在所述液态氮供给线路110上设置有第一阀111,该第一阀111用于使液态氮供给线路110开闭,在迂回管140上设置有第二阀142,该第二阀142用于使迂回管140开闭。
下面,具体说明如上这样构成的超导电缆的减压装置用的液态氮供给装置。
液态氮供给线路110延伸设置到减压装置150,以使液态氮从液态氮罐流入后能够向减压装置150流动。而且,在液态氮供给线路110的途中安装有第一阀111,在第一阀111的前侧,从液态氮供给线路110分支出迂回管140。另外,在迂回管140的前侧,从液态氮供给线路110分支出冷媒循环线路120。冷媒循环线路120使流入液态氮供给线路110的液态氮供给至超导电缆并在超导电缆中循环。
另一方面,在第一阀111的后侧的液态氮供给线路110上,贯通延伸有膨胀部130。在此,所述迂回管140延伸至膨胀部130,在迂回管140上安装有第二阀142。
因此,由于在平时第一阀111使液态氮供给线路110封闭,第二阀142使迂回管140封闭,所以流入液态氮供给线路110的液态氮通过冷媒循环线路120排出至超导电缆并在超导电缆中循环。但是,在需要减压时,通过打开第二阀142使位于液态氮供给线路110的液态氮通过迂回管140流动至膨胀部130。流入膨胀部130的10bar以下的液态氮发生膨胀,一边气化为大气压的气态氮一边吸收蒸发热。
此时,通过打开第一阀111使高温高压的液态氮通过膨胀部130。这样,在膨胀部130中,液态氮蒸发为气态氮,并且吸取沿着液态氮供给线路110通过膨胀部130的液态氮的热量,从而通过膨胀部130的液态氮在被降温的状态下流入减压装置150。
另一方面,在膨胀部130中蒸发的气态氮通过安装在膨胀部130上的排气管131排出至大气中。所述液态氮供给线路110可以配设为贯通膨胀部130,但也可以与所述膨胀部130相邻设置。
在上述的超导电缆的减压装置用的液态氮供给装置100中,说明了在迂回管140上安装第二阀142和在液态氮供给线路110上安装第一阀111,第二阀142和第一阀11能够分别独立进行动作的结构,但阀的结构不限于此,能够进行各种变形。
即,通常打开液态氮供给线路110的时刻和打开迂回管140的时刻没有大的时间差,因此,如图3所示,能够安装使液态氮供给线路110和迂回管140联动地进行开闭的阀。
在上述内容中,作为动作流体说明了液态氮,但本发明不限于此,可以使用能用作冷媒的所有的动作流体。
以上,说明了本发明的优选的实施方式,但本发明不限于此,能够在权利要求和说明书的说明以及附图的范围中进行各种变形来进行实施,这些也属于本发明的范围。

Claims (6)

1.一种减压装置用的液态氮供给装置,其特征在于,包括:
液态氮供给线路,其延伸设置以使高温高压的液态氮向减压装置流动,
迂回管,其从所述液态氮供给线路分支,
膨胀部,其设置在所述迂回管上,以使所述液态氮蒸发为气态氮;
所述膨胀部能够从流入所述减压装置之前的所述液态氮供给线路的液态氮吸热。
2.如权利要求1所述的减压装置用的液态氮供给装置,其特征在于,所述液态氮供给线路贯通所述膨胀部。
3.如权利要求1所述的减压装置用的液态氮供给装置,其特征在于,
在所述液态氮供给线路上还设置有使所述液态氮供给线路开闭的第一阀,
在所述迂回管上还设置有使该迂回管开闭的第二阀。
4.如权利要求1所述的减压装置用的液态氮供给装置,其特征在于,在所述膨胀部上延伸设置有排气管。
5.如权利要求3所述的减压装置用的液态氮供给装置,其特征在于,所述第一阀和所述第二阀联动地进行开闭。
6.如权利要求1所述的减压装置用的液态氮供给装置,其特征在于,所述气态氮处于大气压状态。
CN200910222846.9A 2009-02-11 2009-11-19 液态氮供给装置 Pending CN101799112A (zh)

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