CN108533947A - A kind of Dewar device of the low loss that evaporates - Google Patents
A kind of Dewar device of the low loss that evaporates Download PDFInfo
- Publication number
- CN108533947A CN108533947A CN201810424201.2A CN201810424201A CN108533947A CN 108533947 A CN108533947 A CN 108533947A CN 201810424201 A CN201810424201 A CN 201810424201A CN 108533947 A CN108533947 A CN 108533947A
- Authority
- CN
- China
- Prior art keywords
- inner cylinder
- cryogenic liquid
- emptying
- coil pipe
- dewar
- 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
Classifications
-
- 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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
-
- 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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0308—Radiation shield
- F17C2203/0316—Radiation shield cooled by vaporised gas from the interior
-
- 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
- F17C2203/0391—Thermal insulations by vacuum
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of Dewar devices reducing cryogenic liquid volatilizing loss, including head cover, it is installed on outer barrel and inner cylinder mutually nested on the downside of head cover, cryogenic liquid is marked in inner cylinder, it is characterized in that, it further include the emptying coil pipe between being installed on the inner barrel and outer barrel, the head cover is equipped with the evacuation port of cryogenic liquid volatilization gas, the import of the emptying coil pipe is set to outlet on the head cover, the evacuation port is connected with the emptying coil pipe import, and cryogenic liquid volatilization gas is successively through evacuation port, the import of emptying coil pipe, emptying coil outlets discharge.Dewar device provided by the invention, reduces the leaking heat of Dewar, improves the heat-insulating property of Dewar, reduces the volatilizing loss of cryogenic liquid.
Description
Technical field
The invention belongs to cryogenic liquid storage arts, and in particular to a kind of Dewar device of storage cryogenic liquid.
Background technology
Dewar device is also low-temperature (low temperature) vessel, is invented by Scotland physicist and chemist James-Dewar jazz.
Dewar device is mostly used to store the cryogenic liquids such as liquid oxygen, liquid nitrogen, liquid argon and carbon dioxide, is a kind of more satisfactory container and work
Tool has the characteristics that storage capacity is strong, is easy to transport, is easy-to-use, operation is simple, safety is good.
Existing Dewar device mostly uses the scheme of double container comprising tank body and head cover, tank body is by inner barrel and outer barrel
Composition.Wherein, the interlayer that vacuum is formed between inner barrel and outer barrel, in favor of heat-insulated.It is past in many scientific researches and engineer application field
It is past to need to carry out open pressure release to Dewar device, the rate of volatilization of its inner cryogenic gas (such as liquid helium) is thus accelerated, is increased
The cryogenic liquid volatilizing loss of Dewar device is added.
Invention content
Problem makes improvements the present invention in view of the prior art, i.e., the technical problems to be solved by the invention are to provide a kind of high
Heat-insulating property, the low loss that evaporates Dewar device.
In view of the above technical problems, technical solution provided by the invention is：A kind of Du reducing cryogenic liquid volatilizing loss
Watt device, including head cover, it is installed on outer barrel and inner cylinder mutually nested on the downside of head cover, it is marked with cryogenic liquid, feature in inner cylinder
It is, further includes the emptying coil pipe between being installed on the inner barrel and outer barrel, the head cover is equipped with cryogenic liquid volatilization gas
Evacuation port, the import of the emptying coil pipe is set to outlet on the head cover, the evacuation port and the emptying coil pipe import
It is connected, cryogenic liquid volatilization gas is successively through evacuation port, the import of emptying coil pipe, emptying coil outlets discharge.
Based on the Dewar device of above-mentioned reduction cryogenic liquid volatilizing loss, by the circulating cold air of cryogenic liquid volatilization to vacuum
In interlayer, equivalent to increase the height of Dewar vacuum layer, tube inner surface and inner cylinder outer surface are cold provided with one layer outside Dewar
Screen, reduces the leaking heat of Dewar, improves the heat-insulating property of Dewar, to reduce the volatilizing loss of cryogenic liquid.
Description of the drawings
Fig. 1 is the Dewar apparatus structure schematic diagram that inventive embodiments one provide.
Specific implementation mode
It is described below for disclosing the present invention so that those skilled in the art can realize the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
Embodiment one：
As shown in Figure 1, Dewar device provided in this embodiment includes outer barrel 1, inner cylinder 2 and head cover, head cover is by method on inner cylinder
Orchid 11, inner cylinder lower flange 7, outer drum flange 6 form, and vacuum interlayer is formed between inner cylinder 2, outer barrel 1.Outer barrel 1, inner cylinder 2 are in coaxial
, cylindrical shape with bottom cover.The side wall of outer barrel 1, which is equipped with, evacuates mouth 3, cryogenic liquid is stored in inner cylinder 2, such as liquid helium 13.
Outer drum flange 6 is installed on 1 top of outer barrel, and inner cylinder lower flange 7 is installed on 2 top of inner cylinder.Inner cylinder upper flange 11 is installed
In on inner cylinder lower flange 7, it is connected by screw bolts between above-mentioned two flange, O-ring is used in combination to be sealed.It is set on inner cylinder upper flange 11
There are nitrogen purge mouth 9 and liquid nitrogen filler 10.Outer drum flange 6 is connect with inner cylinder lower flange 7, and bolt is used between above-mentioned two flange
Connection, is used in combination O-ring to be sealed.By the mounting means of ring flange, it can be convenient for dismantling Dewar device, meet daily
Maintenance and maintenance requirements.
Dewar device further includes being located at 7 downside of the inner cylinder lower flange mounting cylinder 5 (also can claim installation shield) coaxial with inner cylinder 2,
And it is set in the emptying coil pipe 4 of 5 outer surface of mounting cylinder.Mounting cylinder 5 is arranged in 2 periphery of inner cylinder, can be set in 2 periphery of inner cylinder
Surface also can directly be lifted on 7 downside of inner cylinder lower flange.Coil pipe 4 is emptied to arrange in the shape of a spiral, along 5 length direction of mounting cylinder, and
It is fixed on 5 outer surface of mounting cylinder by clip.It empties coil pipe import 8 and is set to inner cylinder lower flange 7 with emptying coil outlets 12
On.Emptying coil pipe import 8 is connect with evacuation port 9 by pipeline, and pipe joint preferably uses articulating joint (such as KF connectors).Pass through
Aforesaid way, it is ensured that vacuum interlayer is not blamed by broken, while conducive to the maintenance and repair inside Dewar device.
Certainly, emptying coil pipe 4 is in addition to above-mentioned helical form or the vertical structure of radiator type, and along inner cylinder circumferential direction
Arrangement.Those of ordinary skill in the art can flexibly change the shape for emptying coil pipe 4 on the basis of understanding thinking of the present invention
Into.
Embodiment two：
Embodiment two eliminates mounting cylinder 5 on the basis of embodiment one.Used emptying coil pipe 4 itself carries one
Fixed strength and stiffness are disposed to extend in the shape of a spiral and along the length direction of inner cylinder 2, and top is directly lifted on inner cylinder laxative remedy
Blue 7 downside surfaces.
Embodiment three：
Embodiment two eliminates mounting cylinder 5 on the basis of embodiment one.Used emptying coil pipe 4 is directly set in
2 peripheral surface of inner cylinder.
Dewar device based on above three embodiments, the liquid helium in inner cylinder 2 enter from note import 10, the helium volatilized
It emerges again from evacuation port 9, flows into emptying coil pipe 4 through emptying coil pipe import 8, finally emerge from emptying coil outlets 12.By upper
Device is stated, by the cold nitrogen circulation to vacuum interlayer of liquid nitrogen volatilization, equivalent to increase the height of Dewar vacuum layer, and is being shut out
Watt outer tube inner surface and inner cylinder outer surface are provided with one layer of cold screen, reduce the leaking heat of Dewar, improve the heat insulating ability of Dewar
Can, reduce the waste of liquid nitrogen.
Here the Dewar that the Dewar device of the traditional structure scheme of identical size is provided with the embodiment of the present invention one is provided
The hot simulation result of leakage of device：
By taking stainless steel Dewar as an example, interior cylinder size is D=600mm, is highly H=2000mm, and Dewar outer barrel is D=
800mm is highly H=2050mm, and inner cylinder is without wrapping.Such as use the organization plan of traditional Dewar device, Dewar nitrogen straight
Run in, 59W can be reached to the heat radiation of inner cylinder through heat emulation outer barrel.Using the Dewar device of the embodiment of the present invention one, peace
Fitted tube diameter D=700mm, height H=2000, since the mounting cylinder cold overwhelming majority comes from the recycling of cold nitrogen, then
Amount of radiation need to only consider that amount of radiation of the inner cylinder to mounting cylinder, the heat radiation suffered by inner cylinder can reach 8.2W, radiation heat loss
The percentage of reduction can reach 86.1%.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, such as be directed to head cover
The improvement of organization plan and the improvement etc. for emptying coil pipe mounting means, these changes and improvements both fall within claimed sheet
In the range of invention.Protection scope of the present invention is defined by appended claims and its equivalent.
Claims (8)
1. a kind of Dewar device reducing cryogenic liquid volatilizing loss, including head cover, be installed on it is mutually nested outer on the downside of head cover
Cylinder and inner cylinder are marked with cryogenic liquid in inner cylinder, which is characterized in that further include the emptying disk between being installed on the inner barrel and outer barrel
Pipe, the head cover are equipped with the evacuation port of cryogenic liquid volatilization gas, and the import of the emptying coil pipe is set to the top with outlet
Cover, the evacuation port is connected with the emptying coil pipe import, cryogenic liquid volatilization gas successively through evacuation port, emptying coil pipe into
Mouth, emptying coil outlets discharge.
2. the Dewar device according to claim 1 for reducing cryogenic liquid volatilizing loss, which is characterized in that the emptying disk
Pipe arranges in the shape of a spiral and along inner cylinder length direction, or in it is vertical and along inner cylinder circumferentially.
3. the Dewar device according to claim 2 for reducing cryogenic liquid volatilizing loss, which is characterized in that the head cover packet
Inner cylinder upper flange, inner cylinder lower flange, outer drum flange are included, the outer drum flange is installed on the outer barrel top, the inner cylinder laxative remedy
Orchid is installed on the inner cylinder top, and the inner cylinder upper flange is installed on the inner cylinder lower flange, the outer drum flange with it is described
Inner cylinder lower flange connects, and the emptying coil pipe import, emptying coil outlets are set on the inner cylinder lower flange, and the evacuation port is set
In on the inner cylinder upper flange.
4. the Dewar device according to claim 3 for reducing cryogenic liquid volatilizing loss, which is characterized in that further include being set to
Installation screen between inner cylinder, outer barrel is lifted on the downside of the inner cylinder lower flange or is set in the inner cylinder outer surface, described
Emptying coil pipe is set in installation screen outer surface.
5. the Dewar device according to claim 2 or 3 for reducing cryogenic liquid volatilizing loss, which is characterized in that the row
Blank panel tube top portion is directly lifted on the downside of the head cover.
6. the Dewar device according to any one of claim 1 to 3 for reducing cryogenic liquid volatilizing loss, feature exist
In the coil pipe import is connect with evacuation port by pipeline, and the pipe joint is using articulating joint or is welded to connect.
7. the Dewar device according to any one of claim 1 to 3 for reducing cryogenic liquid volatilizing loss, feature exist
In the cryogenic liquid is one kind in liquid nitrogen, liquid oxygen, liquid argon, liquefied natural gas, liquid helium.
8. reducing the Dewar device of the low loss that evaporates of low temperature according to claim 2 to 4 any one of them, feature exists
In the length arranged on cylinder length direction including the emptying coil pipe is not less than the height of the inner cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424201.2A CN108533947A (en) | 2018-05-04 | 2018-05-04 | A kind of Dewar device of the low loss that evaporates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424201.2A CN108533947A (en) | 2018-05-04 | 2018-05-04 | A kind of Dewar device of the low loss that evaporates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108533947A true CN108533947A (en) | 2018-09-14 |
Family
ID=63476372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810424201.2A Pending CN108533947A (en) | 2018-05-04 | 2018-05-04 | A kind of Dewar device of the low loss that evaporates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108533947A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113335767A (en) * | 2020-02-18 | 2021-09-03 | 中国科学院物理研究所 | Low-temperature container |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498538A (en) * | 2009-02-09 | 2009-08-05 | 中国科学技术大学 | Double-coil pipe cold steam refrigerating low-loss liquid helium Dewar |
| CN102997036A (en) * | 2012-12-20 | 2013-03-27 | 奥泰医疗系统有限责任公司 | Upgrading structure for low-temperature container with liquid helium consumption |
| CN204042430U (en) * | 2014-08-23 | 2014-12-24 | 王永灵 | A kind of cryogenic gas reliquefaction installation of simple and feasible |
| CN204534119U (en) * | 2015-01-19 | 2015-08-05 | 西南交通大学 | The special machine cabinet of helium recovery recycling device |
| CN204943012U (en) * | 2015-08-05 | 2016-01-06 | 大连齐维科技发展有限公司 | A kind of cooled cryostat chamber |
| CN106641697A (en) * | 2016-12-09 | 2017-05-10 | 中国科学院理化技术研究所 | Low-temperature liquid storage container with slit inner fin type heat exchanger and cold screen |
| CN208595422U (en) * | 2018-05-04 | 2019-03-12 | 安徽万瑞冷电科技有限公司 | A kind of Dewar device of the low loss that evaporates |
-
2018
- 2018-05-04 CN CN201810424201.2A patent/CN108533947A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498538A (en) * | 2009-02-09 | 2009-08-05 | 中国科学技术大学 | Double-coil pipe cold steam refrigerating low-loss liquid helium Dewar |
| CN102997036A (en) * | 2012-12-20 | 2013-03-27 | 奥泰医疗系统有限责任公司 | Upgrading structure for low-temperature container with liquid helium consumption |
| CN204042430U (en) * | 2014-08-23 | 2014-12-24 | 王永灵 | A kind of cryogenic gas reliquefaction installation of simple and feasible |
| CN204534119U (en) * | 2015-01-19 | 2015-08-05 | 西南交通大学 | The special machine cabinet of helium recovery recycling device |
| CN204943012U (en) * | 2015-08-05 | 2016-01-06 | 大连齐维科技发展有限公司 | A kind of cooled cryostat chamber |
| CN106641697A (en) * | 2016-12-09 | 2017-05-10 | 中国科学院理化技术研究所 | Low-temperature liquid storage container with slit inner fin type heat exchanger and cold screen |
| CN208595422U (en) * | 2018-05-04 | 2019-03-12 | 安徽万瑞冷电科技有限公司 | A kind of Dewar device of the low loss that evaporates |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113335767A (en) * | 2020-02-18 | 2021-09-03 | 中国科学院物理研究所 | Low-temperature container |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103711720B (en) | The horizontal LNG immersed pump of vacuum pond | |
| CN208595422U (en) | A kind of Dewar device of the low loss that evaporates | |
| CN109668007A (en) | A kind of high pressure vacuum Sandwich pipeline | |
| CN108533947A (en) | A kind of Dewar device of the low loss that evaporates | |
| CN109707946A (en) | A kind of cryogenic piping system | |
| CN109707990A (en) | A kind of hydrogenation system based on deep cooling high-pressure hydrogen storing | |
| CN116447511A (en) | Adsorption-reaction-storage integrated hydrate solid-state hydrogen storage device and method | |
| CN201215248Y (en) | Spherical low-temperature liquid storage device | |
| CN103418597B (en) | A kind of system processing mercurous core | |
| CN102588730A (en) | Cooling silane intermediate storage tank with outer coiled pipe | |
| CN211450333U (en) | Large-scale normal pressure liquid argon storage tank and argon self-recovery device thereof | |
| US3201946A (en) | Cryogenic container support and fluid conduit structure | |
| CN103174932A (en) | Low-temperature storage tank | |
| CN209604905U (en) | A kind of pressure release noise reduction recyclable device for cryogenic liquid tank lorry | |
| CN209705710U (en) | A kind of deep cooling high-pressure hydrogen storing bottle | |
| CN202927477U (en) | Internal pipeline of low-temperature container | |
| CN202501185U (en) | Outer-coil cooling silane intermediate storage tank | |
| CN207555200U (en) | Industrial gasses vaporize heat recovery application system | |
| CN203147263U (en) | Low-temperature storage tank | |
| CN208348943U (en) | A kind of LNG storage tank | |
| CN101955169A (en) | Method for transforming crude argon column condenser with non-condensable gas discharging pipe, and crude argon column condenser | |
| CN109707991A (en) | A kind of deep cooling high-pressure hydrogen storing bottle | |
| CN111878696A (en) | Low-temperature tank car | |
| CN106764395A (en) | LNG tank | |
| CN218762676U (en) | Cold shield device for ultralow-temperature liquid storage container |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |