CN110160317A - Liquefied gas at low temp generation device - Google Patents

Liquefied gas at low temp generation device Download PDF

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Publication number
CN110160317A
CN110160317A CN201910090026.2A CN201910090026A CN110160317A CN 110160317 A CN110160317 A CN 110160317A CN 201910090026 A CN201910090026 A CN 201910090026A CN 110160317 A CN110160317 A CN 110160317A
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CN
China
Prior art keywords
piping
liquefied gas
generation device
holding vessel
low temp
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.)
Granted
Application number
CN201910090026.2A
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Chinese (zh)
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CN110160317B (en
Inventor
日高康祐
小田仁
松藤和树
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Ulvac Cryogenics Inc
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Ulvac Cryogenics Inc
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Publication of CN110160317A publication Critical patent/CN110160317A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • F25J1/0015—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • F25J1/0017—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/0062—Light or noble gases, mixtures thereof
    • F25J1/0065—Helium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0225—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using other external refrigeration means not provided before, e.g. heat driven absorption chillers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
    • F25J1/0276—Laboratory or other miniature devices
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    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04945—Details of internal structure; insulation and housing of the cold box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F17C—VESSELS 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0103—Exterior arrangements
    • F17C2205/0111—Boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F17C—VESSELS 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/0126—One vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
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    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
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    • F17C2205/0355—Insulation thereof
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    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
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    • F17C—VESSELS 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F17C—VESSELS 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
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    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
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    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS 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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/031—Treating the boil-off by discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS 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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • F17C5/04—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases requiring the use of refrigeration, e.g. filling with helium or hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS 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
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/60—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
    • F25J2205/64—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end by pressure-swing adsorption [PSA] at the hot end
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/40—Air or oxygen enriched air, i.e. generally less than 30mol% of O2
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/42—Nitrogen or special cases, e.g. multiple or low purity N2
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/06—Lifting of liquids by gas lift, e.g. "Mammutpumpe"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/62—Details of storing a fluid in a tank

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Clinical Laboratory Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

Present invention offer can reduce the setting occupied area of device and can change the liquefied gas at low temp generation device of the position of outlet.Liquefied gas at low temp generation device involved in one embodiment of the present invention has holding vessel, gas inducting device, refrigerating circuit, sends out piping and shell.The holding vessel stores liquefied gas.The gas inducting device wants liquefied gas to holding vessel importing.The refrigerating circuit includes that cooling and liquefied refrigerator is carried out to the gas for importing the holding vessel.The submitting piping is connected to the holding vessel, and has the outlet of liquefied gas in front end.The shell has the operation portion that can releasably keep the front end for sending out piping, and accommodates the holding vessel, the refrigerating circuit, the gas inducting device and submitting piping.

Description

Liquefied gas at low temp generation device
Technical field
The present invention relates to the liquefied gas at low temp generation devices that can manufacture the liquefied gas at low temp such as liquid nitrogen.
Background technique
All the time, it is known to simply manufacture the liquid nitrogen generation device of the Cooling and Heat Source as natural sciences equipment etc..For example, A kind of simple liquid nitrogen manufacturing device is disclosed in patent document 1, having on top there is the thermally insulated container of opening portion to store Nitrogen is imported the air-separating plant of store groove, is configured at the opening portion of store groove and makes the Nitrogen Headspace for importing store groove by slot The cold head of change.
Existing technical literature
Patent document
Patent document 1: No. 2816959 bulletin of Japanese Unexamined Patent Publication
Summary of the invention
Problems to be solved by the invention
For previous liquid nitrogen generation device, due to store groove, air-separating plant, recycle refrigerant to cold head Compressor unit etc. is arranged on floor respectively as independent device, therefore that there are the setting occupied areas of device is such greatly Problem.
Also, in previous liquid nitrogen generation device, due to the outlet for taking out the liquid nitrogen in store groove to outside Position is fixed, therefore the position of outlet can not be changed according to the type of the container of the liquid nitrogen of receiving supply or size, or Person needs the connection that will separately prepare to be attached to outlet with hose to take out liquid nitrogen.
In view of the foregoing, it the purpose of the present invention is to provide the setting occupied area that can reduce device and can change The liquefied gas at low temp generation device of the position of outlet.
A technical solution to solve project
In order to achieve the above object, liquefied gas at low temp generation device involved in one embodiment of the present invention has storage Tank, refrigerating circuit, sends out piping and shell at gas inducting device.
The holding vessel stores liquefied gas.
The gas inducting device wants liquefied gas to holding vessel importing.
The refrigerating circuit includes that cooling and liquefied refrigerator is carried out to the gas for importing the holding vessel.
The submitting piping is connected to the holding vessel, and has the outlet of liquefied gas in front end.
The shell has the operation portion that can releasably keep the front end for sending out piping, and accommodates the storage Tank, the refrigerating circuit, the gas inducting device and submitting piping.
In above-mentioned liquefied gas at low temp generation device, due to holding vessel, refrigerating circuit, gas inducting device and piping is sent out It is respectively accommodated in common shell, therefore can be realized the densification of device entirety and the reduction of setting area.In addition, due to The operation portion of shell, the front end for sending out piping is detachably constituted, therefore can change the position of outlet.
The front end for sending out piping can also include the handle being fixed near the outlet, and the submitting is matched Pipe is also configured to pull out via the handle from the operation portion to the outside of the shell.
Due to send out piping be configured to pull out, can operation handle so that outlet is moved to arbitrary position.
The shell can also be made of the cuboid of lengthwise, and the cuboid includes the front with the operation portion； And the opposite back side with the front, the submitting piping also can have: arch area, in the front and the back The top of the holding vessel is set up between face；And region of hanging down, it is located at the position that the back side is leaned on than the holding vessel It sets, and hangs down along gravity direction.
By making the rectangular shape of shell lengthwise, realize that setting occupies so as to dimensionally configure internal each unit The reduction of area, and can be efficiently accommodated in shell even if sending out and being piped in longer situation.
The liquefied gas generation device can also have the tension generation mechanism for the inside for being set to the shell.It is described Tension generation mechanism has the first constant force spring, and first constant force spring is set to the arch area, and to the hand The opposite direction of the pull-out direction of handle applies permanent load.
The submitting pulled out is piped to the intracorporal storage of shell to become easy.
The tension generation mechanism can also have the second constant force spring, and second constant force spring is set to described hang down Region, and apply constant load to the pull-out direction of the handle.
The upper pulling force for sending out the region of hanging down of piping as a result, is assisted, therefore the pulling operation of handle becomes easy.
The operation portion can have the maintaining part for magnetically adsorbing the handle.
Thereby, it is possible to be easy to carry out the handling of the handle relative to operation portion.
The submitting piping can be made of the flexible hose of the double-layer structure with vacuum heat-insulating layer.
Thereby, it is possible to prevent from sending out the gasification of the liquefied gas in being piped, it is sizing also to cope with the length sent out and be piped.
The operation portion can have the supporting station for being configured to supporting container, and the container is accommodated from the outlet The liquefied gas at low temp of submitting.
Thereby, it is possible to easily take out liquefied gas at low temp.
Invention effect
According to the present invention, as described above, it is possible to reduce the setting occupied area of device, and it can also change outlet Position.
Detailed description of the invention
Fig. 1 is the overall perspective view for indicating liquefied gas at low temp generation device involved in one embodiment of the present invention.
Fig. 2 is the block diagram that outlined the composition of above-mentioned liquefied gas at low temp generation device.
Fig. 3 is the sectional view of the major part of above-mentioned liquefied gas at low temp generation device.
Fig. 4 is the A-A cross-sectional view in Fig. 3.
Fig. 5 is the B-B cross-sectional view in Fig. 4.
Fig. 6 is the functional block diagram of above-mentioned liquefied gas at low temp generation device.
Fig. 7 is the major part side view of the submitting piping of above-mentioned liquefied gas at low temp generation device.
Fig. 8 is the sectional view of the liquefied gas at low temp generation device for the state for indicating that above-mentioned submitting piping is drawn out.
Specific embodiment
In the following, the embodiments of the present invention will be described with reference to the drawings.
Fig. 1 is the overall perspective view for indicating liquefied gas at low temp generation device involved in one embodiment of the present invention. X-axis, Y-axis and Z axis indicate 3 mutually orthogonal axial directions in the figure, and Z axis is equivalent to vertical direction.
In the present embodiment, it as liquefied gas at low temp generation device, illustrates and is illustrated by taking liquid nitrogen generation device as an example.
[overall structure of liquefied gas at low temp generation device]
The liquid nitrogen generation device 100 of present embodiment has shell 10, and the storage of shell 10 generates, storage, takes out liquid nitrogen institute The armamentarium needed.
In the present embodiment, shell 10 is made of the cuboid of lengthwise, and the cuboid has positive 11,12, two, the back side Side 13 and top surface 14.The front 11 of shell 10 is provided with the operation portion 20 for taking out liquid nitrogen to outside.
In the following, being illustrated to the overall structure of liquid nitrogen generation device 100.Fig. 2 is to outlined liquid nitrogen generation device The block diagram of 100 composition.
As shown in Fig. 2, liquid nitrogen generation device 100 has the holding vessel 31 of storage liquid nitrogen, to liquefy to the importing of holding vessel 31 Gas (being in the present embodiment nitrogen) gas inducting device 32, including opposite holding vessel 31 import nitrogen cooled down And the refrigerating circuit of liquefied refrigerator 33, in front end there is the submitting piping 50 etc. of the outlet 51 of liquid nitrogen.Shell 10 will These holding vessels 31, refrigerating circuit, gas inducting device 32, submitting piping 50 etc. are contained in inside.
Holding vessel 31 is by top there is the thermally insulated container of opening portion 310 to constitute.Lid is airtightly installed in opening portion 310 311.Holding vessel 31 has liquid level sensor 312, and liquid level sensor 312 is used to the storage capacity of liquid nitrogen maintaining given range. The structure of liquid level sensor 312 is not particularly limited, except the position for detecting liquid level using two sensors as illustrated The case where other than, single rodlike sensor can be used also to be detected.
Gas inducting device 32 in nitrogen importing holding vessel 31, will import 41 perforation lids 311 of piping simultaneously via piping 41 is imported It is connected to opening portion 310.Gas inducting device 32 is made of air-separating plant, which for example passes through PSA (Pressure Swing Adsorption) mode, to adsorbent and alternately repeats Oxygen Adsorption to pressurize on one side and decompression Operation, nitrogen is taken out from air on one side.It is equipped in the front 11 of shell 10 and leads to for the air for being taken into gas inducting device 32 The ventilating part 11a (referring to Fig.1) crossed.
Refrigerator 33 is set to the lid 311 of holding vessel 31, and has outstanding into holding vessel 31 via opening portion 310 Cold head 33a.Refrigerator 33 receives refrigerant gas (example from the compressor unit 34 for constituting refrigerating circuit together with refrigerator 33 Such as, helium) supply, so that cold head 33a is maintained extremely low temperature (in this case, it is the boiling point of liquid nitrogen (77K) temperature below).Cold head 33a keeps the nitrogen for being imported into opening portion 310 via importing piping 41 cooling and liquefies.Liquid nitrogen is generated as a result, and is stored in storage Tank 31.
The taking-up piping 42 of the liquid nitrogen for taking out storage is connected in the lid 311 of holding vessel 31 and for being discharged The exhaust of upper gas in holding vessel 31 piping 43.
Taking out has the open and close valve 42v open when taking out liquid nitrogen with piping 42.It takes out and is configured at storage with one end of piping 42 Nearby (position lower than the liquid level Ls of liquid nitrogen), the other end is connect with aftermentioned submitting piping 50 for the bottom of tank 31.
Exhaust piping 43 has the open and close valve 43v open in the upper gas being discharged in holding vessel 31.Exhaust piping 43 One end be configured near the opening portion 310 of holding vessel 31 (than the position of the liquid level Ls high of liquid nitrogen), the other end is configured at shell The inside of body 10 or the outside of shell 10.
Fig. 3 is the sectional view for indicating the major part of in-built liquid nitrogen generation device 100 of shell 10, and Fig. 4 is A-A cross-sectional view in Fig. 3, Fig. 5 are the B-B cross-sectional views in Fig. 4.In the various figures, the diagram of piping for connecting each equipment etc. is omitted.
The inside of shell 10 has two rooms (the first Room 15 and second Room 16) divided by about 17 partition wall.In downside The first Room 15 configured with gas inducting device 32, compressor unit 34 etc., upside second Room 16 configured with holding vessel 31, cold Jelly machine 33 etc..In the present embodiment, compressor unit 34 is configured at the first Room 15, but can also be configured at second Room 16.
Fig. 6 is the functional block diagram of liquid nitrogen generation device 100.
Liquid nitrogen generation device 100 is also equipped with controller 35, controller 35 control gas inducting device 32, compressor unit 34, Open and close valve 42v, 43v etc..Controller 35 is typically made of computer.Controller 35 is based on aftermentioned operation portion 20, liquid level passes The output of sensor 312 etc., control gas inducting device 32, compressor unit 34, open and close valve 42v, 43v etc..
In the present embodiment, controller 35 is set to second Room 16, and but it is not limited to this, also can be set in the first Room 15.
Liquid nitrogen generation device 100 is also equipped with the piping of the submitting for taking out liquid nitrogen to outside 50.Piping 50 is sent out by growing The flexible hose of item is constituted, and the flexible hose is via the through-hole 11w (referring to Fig. 3) in the front 11 for being set to shell 10 in shell 10 Outside and inside between it is winding.
It sends out piping 50 and includes the base end part 50a being connected to holding vessel 31 (referring to Fig. 4)；Outlet 51 with liquid nitrogen Front end 50b (referring to Fig. 3).Send out piping 50 base end part 50a via the inside for being fixed on shell 10 supporting member 18 with It takes out with piping 42 (referring to Fig. 2) connection.The front end 50b of piping 50 is sent out by being set to the operation portion 20 of the outside of shell 10 Detachably keep.Piping 50 is sent out typically to be made of the flexible hose of the double-layer structure with vacuum heat-insulating layer.
[operation portion]
Such as Fig. 1 and as shown in figure 3, operation portion 20 be set to front 11 substantially central portion.Operation portion 20 has housing section 21, protects Hold portion 22 and supporting station 23.
Housing section 21 is the cabinet of the open lengthwise in lower end, and has the function as guiding wall, which makes to send out The front end 50b of piping 50 hangs from the underface of housing section 21.Operation panel 24, operation panel are provided with before housing section 21 24 have multiple operation keys of the taking-up of setting liquid nitrogen and its stopping, withdrawal amount etc..
Maintaining part 22 is releasably kept from the lower end of the housing section 21 front end 50b outstanding for sending out piping 50.At this In embodiment, the front end 50b for sending out piping 50 has the handle 52 for being fixed on position near outlet 51, front end 50b is kept via 52 maintained portion 22 of handle.Moreover, maintaining part 22 has a pair of magnet of configured separate in the up-down direction Portion M magnetically adsorbs handle 52 via these magnet parts M, and keeps handle 52 (to send out with the posture of outlet 51 downward Piping is 50).
Fig. 7 is the side view for indicating the structure of handle 52.The plastic grasping that there is handle 52 user can hold Portion 521 and upper and lower a pair of of magnetic that grip part 521 is configured in a manner of corresponding with a pair of magnet portion M of maintaining part 22 Property plate 522.Metal stiffening plate 523 is installed at the both ends of the up and down direction of grip part 521.It is installed on grip part 521 The stiffening plate 523 of lower end also has the function as protection board, which protects grip part 521 from flowing out from outlet 51 Liquid nitrogen steam (cold air).
The size and shape appropriate that grip part 521 is formed as user manually or can hold across gloves.It is grasping The inside in portion 521 is built-in with apolipsis valve 50v, and the vacuum heat-insulating layer 50c for sending out piping 50 is maintained vacuum by apolipsis valve 50v.From The length that the submitting of grip part 521 to outlet 51 is piped 50 is not particularly limited, before and after typically 100mm.In this reality It applies in mode, as piping 50 is sent out, is certainly not limited to using the size of the bimetallic tube of internal diameter 9mm, outer diameter 30mm, but diameter This.
Supporting station 23 is configured to supporting container 1, and the receiving of container 1 takes from the submitting piping 50 for being held in maintaining part 22 The liquid nitrogen that outlet 51 is sent out.Supporting station 23 is set to the positive height and position appropriate of shell 10.Supporting station 23 is away from ground Height is not particularly limited, and is typically set to the height (about 600mm~800mm) of the waist of user.User can be with as a result, Stance takes out liquid nitrogen.Supporting station 23 is made of metal or synthetic resin system, either it is fixed, it is also possible to fold Formula, it is possible to have the cover for preventing liquefied gas from dispersing.
Operation portion 20 also has danger button 25.When wanting to make 100 emergent stopping of liquid nitrogen generation device etc., pressing operation Danger button 25.In the present embodiment, danger button 25 is set to the front of shell 10 with the height same with maintaining part 22 11 position appropriate, but it is not limited to this, also can be set in the adjacent upper part in front 11.
[exhaustion mechanism]
In the present embodiment, submitting piping 50 is configured to the outer layback via handle 52 from operation portion 20 to shell 10 Out.Fig. 8 is the side section view for the state for indicating that the front end 50b (handle 52) that will send out piping 50 is pulled out to the outside of shell 10 Figure.In the following, being illustrated to the exhaustion mechanism of submitting piping 50.
Send out piping 50 by Fig. 3 and it is shown in Fig. 4 in a manner of it is winding in the state of be contained in the inside of shell 10.More specifically For, sending out piping 50 has arch area 501 and region 502 of hanging down, front 11 and back of the arch area 501 in shell 10 The top of holding vessel 31 is set up between face 12, region 502 of hanging down is located at than 31 backrest surface of holding vessel, 12 side, and along gravity direction It hangs down.
The arch area 501 of piping 50 is sent out to match for what is set up between the through-hole 11w of shell 10 and piping guide portion 61 Pipe portion position.It is piped the back side 12 side of the guide portion 61 inside shell 10 and is set to the position higher than through-hole 11w.It is piped guide portion 61 Such as the guidance receiving portion 62 by being set to bearing wall portion 19 (referring to Fig. 4,5) is supported, which is erected on The second Room 16 of shell 10.
On the other hand, send out piping 50 region 502 of hanging down be from piping guide portion 61 with supporting member 18 (referring to Fig. 4) Between the piping position vertically turned back.Hang down region 502 with pipe range according to the handle 52 pulled out from operation portion 20 Length and change (referring to Fig. 8).
Given position in region 502 of hanging down is equipped with stopper section 63, and stopper section 63 is by the pull-out length limitation of handle 52 Given following.The pulling operation of stopper section 63 and handle 52 links and rises, and is rising to the lower end with guidance receiving portion 62 The time point for the distance that portion 62a is abutted, the pulling operation of handle 52 are limited.Until what stopper section 63 was abutted with guidance receiving portion 62 Climb is equivalent to the maximum of handle 52 and pulls out length.
In the present embodiment, the above-mentioned climb of stopper section 63 is, for example, 600~700mm, so that in this case Height (H) of the outlet 51 away from ground for sending out piping 50 is, for example, that the mode of 250mm~350mm sets the position of maintaining part 22 It sets.
The liquid nitrogen generation device 100 of present embodiment is also equipped with the tension generation mechanism 70 for being set to the inside of shell 10. Tension generation mechanism 70 has the first constant force spring 71, and the first constant force spring 71 is to the direction opposite with the pull-out direction of handle 52 Apply permanent load.First constant force spring 71 is set to the arch area 501 for sending out piping 50.More specifically, the first constant force Spring 71 is fixed on the inner wall of the top surface 14 of shell 10, and the line portion 711 of fixing piece 712, fixing piece are fixed on one end 712 are installed on the given position for sending out the arch area 501 of piping 50.Line portion 711 is supported by pulley 713, and pulley 713 is set to It is piped the top of guide portion 61.
First constant force spring 71 is typically made of coiled disc spring.By the first constant force spring 71, can not depend on It is pulled out with constant pullout forces in the pull-out length for sending out piping 50 and sends out piping 50.In addition, the submitting of pull-out can be matched Pipe 50 is automatically retracted towards the inside of shell 10.
First constant force spring 71 can also have one-way rotation mechanism portion 714 (referring to Fig. 5).One-way rotation mechanism portion 714 Typically there is the locking tooth with the linkage of the draw out operation in line portion 711 and rotation, and be configured to given extraction unit Length keeps in line portion 711 in the position.Thereby, it is possible to will send out piping 50 with the pull-out of arbitrary length.To based on unidirectional rotation The mechanism that the locking in rotation mechanism portion 714 releases is not particularly limited, and can be linked sending out piping 50 using with pulling operation And mechanism, the mechanism released by key operation appropriate etc. released.
Tension generation mechanism 70 also has the second constant force spring 72, and the second constant force spring 72 is applied to the pull-out direction of handle 52 Add constant load.Second constant force spring 72 is set to the region 502 of hanging down for sending out piping 50.More specifically, the second constant force Spring 72 is fixed on the inner wall of the top surface 14 of shell 10, and there is one end to be fixed on fixing piece (until in the present embodiment Stopper 63) line portion 721, above-mentioned fixing piece be installed on send out piping 50 region 502 of hanging down given position.
First constant force spring 72 is made of in the same manner as the first constant force spring 71 coiled disc spring.Pass through the second constant force bullet Spring 72, the upper pulling force for sending out the region 502 of hanging down of piping 50 is assisted, therefore the pulling operation of handle 52 becomes easy.
The spring force of first constant force spring 71 and the second constant force spring 72 is not particularly limited, and the size between them is closed It is also unlimited.For example, the length in region 502 of hanging down is longer, the power that handle 52 is returned to 20 layback of operation portion is stronger.In the situation Under, the first constant force spring 71 to the second constant force spring, 72 spring forces can be made small.
[movement of liquefied gas at low temp generation device]
Next, being illustrated to the typical action of the liquid nitrogen generation device 100 of present embodiment.
In liquid nitrogen generation device 100, nitrogen is imported to holding vessel 31 by gas inducting device 32.At this point, taking out with matching The open and close valve 42v of pipe 42 is closed, and the open and close valve 43v of exhaust piping 43 is open.The nitrogen imported to holding vessel 31 passes through cold head 33a carries out cooling, liquefies, and is stored into holding vessel 31.Do not liquefy and remaining gas via exhaust with piping 43 to storage The external exhaust gas of tank 31.When the storage capacity for detecting liquid nitrogen by liquid level sensor 312 is to give above, refrigerator 33 stops. At this point, compressor unit 34 and gas inducting device 32 can also stop.
When the operation key of the liquid nitrogen taking-up inputted on operation panel 24, row open with the open and close valve 42v of piping 42 is taken out The open and close valve 43v of gas piping 43 is closed.As a result, due to the nitrogen supplied from gas inducting device 32, in the internal pressure of holding vessel 31 It rises, liquid nitrogen is sent via taking-up piping 42 and submitting piping 50 towards outlet 51.When input liquid nitrogen takes out stopping It when operation key, takes out and is closed with the open and close valve 42v of piping 42, the open and close valve 43v of exhaust piping 43 is open, so that liquid nitrogen takes Stop out.
Here, as Fig. 1 and as shown in figure 3, send out piping 50 handle 52 be maintained at maintaining part 22 in the case where, from The liquid nitrogen that outlet 51 flows out is accommodated by the container 1 for being placed in supporting station 23.In this case, the capacity in container 1 is known In the case of, the time point for being also configured to reach in the sendout of liquid nitrogen the given value of the degree of filling container 1 makes taking for liquid nitrogen Operating out automatically terminates.
On the other hand, as shown in fig. 7, being pulled out piping 50 is sent out from operation portion 20 via handle 52, so as to change The position of outlet 51 or height.For example, the container in receiving liquid nitrogen is the large size that can not be set to the degree of supporting station 23 In the case of etc., the outlet 51 by that will send out piping 50 is pulled out towards ground, thus to the supply for receptacles being placed on ground Liquid nitrogen.
Liquid nitrogen generation device 100 according to the present embodiment, due to holding vessel 31 including refrigerator 33 and compressor unit 34 refrigerating circuit, gas inducting device 32 and submitting piping 50 is respectively accommodated in common shell 10, therefore can be realized dress Set the reduction of whole densification and setting area.Especially since they are dimensionally configured at the division up and down in shell 10 First and second room 15,16, therefore storage efficiency into shell 10 improves, and can aid in the reduction of installation space.
In addition, since be configured to can in the positive operation portion 20 for being set to shell 10 by the front end 50b that sends out piping 50 It is loaded and unloaded, therefore the position of the outlet 51 of liquid nitrogen can be changed.It is configured to especially since sending out piping 50 from shell Body 10 pulls out, and there is no need to other connection hoses, can be easily adjusted taking for liquid nitrogen according to the type or size of container The height and position of outlet 51.
Also, according to the present embodiment, there is arch area 501 and region 502 of hanging down due to sending out piping 50, i.e., Make also store submitting piping in the limited space-efficient in shell 10 in the case where submitting piping 50 is long 50。
Moreover, because sending out piping by tension generation mechanism 70 (the first constant force spring 71, the second constant force spring 72) 50 each section applies tension appropriate to assigned direction, therefore even if also can in the case where it is long for sending out piping 50 It is enough to inhibit reduction operational as caused by the self weight (and its weight of internal liquid nitrogen) for sending out piping 50, so as to hold It changes places and send out the pulling operation of piping 50 and retract operation.
It is made of moreover, because sending out piping 50 flexible hose of the double-deck piping with vacuum heat-insulating layer 50c, therefore i.e. Make also to be able to suppress in the case where submitting piping 50 is long in holding vessel 31 to the submitting piping 50 between outlet 51 Liquid nitrogen gasification, so as to which liquid nitrogen is stably supplied.
More than, embodiments of the present invention are illustrated, but the present invention is not limited to above-mentioned embodiment, Certainly it can apply various changes.
For example, in the above embodiment, as liquefied gas at low temp generation device, being with liquid nitrogen generation device 100 Example citing is illustrated, and but it is not limited to this, and the present invention can also apply to other low-temperature liquefactions of liquid oxygen, liquia air etc. Gas generation apparatus.
Alternatively, it is also possible to have the sensor for being able to detect the pull-out length for sending out piping 50 or be able to detect handle Whether 52 be in the sensor of the reception position kept by maintaining part 22.In this case, above-mentioned storage position is in handle 52 When setting and being not in above-mentioned reception position, the withdrawal amount of liquid nitrogen can be automatically adjusted.Furthermore it is also possible to have detection branch The sensor of the presence or absence of container 1 on cushion cap 23.
Symbol description
10 shells
20 operation portions
22 maintaining parts
23 supporting stations
31 holding vessels
32 gas inducting devices
33 refrigerators
34 compressor units
50 send out piping
501 arch areas
502 hang down region
The front end 50b
51 outlets
52 handles
70 tension generation mechanisms
71 first constant force springs
72 second constant force springs
100 liquid nitrogen generation devices (liquefied gas at low temp generation device)

Claims (8)

1. a kind of liquefied gas at low temp generation device, has:
Holding vessel stores liquefied gas；
Gas inducting device wants liquefied gas to holding vessel importing；
Refrigerating circuit comprising cooling and liquefied refrigerator is carried out to the gas for importing the holding vessel；
Piping is sent out, is connected to the holding vessel, and there is the outlet of liquefied gas in front end；And
Shell, have can releasably keep it is described send out piping front end operation portion, and accommodate the holding vessel, The refrigerating circuit, the gas inducting device and submitting piping.
2. liquefied gas at low temp generation device according to claim 1, wherein
The front end for sending out piping further includes the handle being fixed near the outlet,
The submitting piping is configured to pull out via the handle from the operation portion to the outside of the shell.
3. liquefied gas at low temp generation device according to claim 2, wherein
The shell is made of the cuboid of lengthwise, and the cuboid includes the front with the operation portion；And with it is described The opposite back side in front,
The submitting piping includes arch area, is set up in the upper of the holding vessel between the front and the back side Portion；And region of hanging down, it is located at the position that the back side is leaned on than the holding vessel, and hang down along gravity direction.
4. liquefied gas at low temp generation device according to claim 3, wherein
The liquefied gas at low temp generation device is also equipped with the tension generation mechanism for being set to the inside of the shell,
The tension generation mechanism has the first constant force spring, and first constant force spring is set to the arch area, and to The direction opposite with the pull-out direction of the handle applies permanent load.
5. liquefied gas at low temp generation device according to claim 4, wherein
The tension generation mechanism also has the second constant force spring, and second constant force spring is set to the region of hanging down, and Apply constant load to the pull-out direction of the handle.
6. liquefied gas at low temp generation device as claimed in any of claims 2 to 5, wherein
The operation portion has the maintaining part for magnetically adsorbing the handle.
7. liquefied gas at low temp generation device as claimed in any of claims 1 to 5, wherein
The submitting piping is made of the flexible hose of the double-layer structure with vacuum heat-insulating layer.
8. liquefied gas at low temp generation device as claimed in any of claims 1 to 5, wherein
The operation portion has the supporting station for being configured to supporting container, and the container receiving is sent out low from the outlet Warm liquefied gas.
CN201910090026.2A 2018-02-14 2019-01-30 Low-temperature liquefied gas generating device Active CN110160317B (en)

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JP2018023852A JP7080066B2 (en) 2018-02-14 2018-02-14 Cryogenic liquefied gas generator
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