CN203024534U - Small helium liquefaction device - Google Patents
Small helium liquefaction device Download PDFInfo
- Publication number
- CN203024534U CN203024534U CN 201220659170 CN201220659170U CN203024534U CN 203024534 U CN203024534 U CN 203024534U CN 201220659170 CN201220659170 CN 201220659170 CN 201220659170 U CN201220659170 U CN 201220659170U CN 203024534 U CN203024534 U CN 203024534U
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- CN
- China
- Prior art keywords
- heat exchanger
- helium
- stage cooling
- cooling head
- liquid helium
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a small helium liquefaction device comprising a low-temperature dewar bottle, wherein a liquid helium confluence tank is arranged in the dewar bottle. The low-temperature dewar bottle further comprises a cooling machine, wherein a first-stage cooling head and a second-stage cooling head of the cooling machine extend into the low-temperature dewar bottle, the bottom of the second-stage cooling head extends into the liquid helium confluence tank, a first-stage cooling head heat exchanger is arranged outside the first-stage cooling head, a second-stage cooling head heat exchanger is arranged outside the second-stage cooling head, and the bottom of the second-stage cooling head is provided with a reliquefaction condenser. The top of the low-temperature dewar bottle further comprises a gas inlet pipe, the gas inlet pipe is connected with an inlet of the first-stage cooling head heat exchanger, and gas sequentially flows through the first-stage cooling head heat exchanger and the second-stage cooling head heat exchanger and then enters the reliquefaction condenser. A liquid outlet pipe is installed on the top of the low-temperature dewar bottle, and the lower portion of the liquid outlet pipe is provided with a liquid outlet formed in the confluence tank. The top of the low-temperature dewar bottle is provided with the liquid outlet pipe, and the lower portion of the liquid outlet pipe is provided with the liquid outlet formed in the inner wall of the liquid helium confluence tank. The novel helium liquefaction device is light in weight, small in size, convenient to move and transport, and suitable for use in medium-and-small-sized laboratories with small use amount of liquid helium.
Description
Technical field
The utility model relates to liquid helium process units field, is specially a kind of small-sized helium liquefaction device.
Background technology
Helium is a kind of expensive strategic materials, is also simultaneously the most a kind of gas of difficult liquefaction of nature.Under normal pressure, the boiling temperature of liquid helium is very low, only has 4.2K.At present, a lot of helium liquefiers are arranged both at home and abroad, the liquid helium daily output rises to several hectolitres and does not wait from several.The device of general this production liquid helium is usually huger, and operating cost is also higher, is not suitable for middle-size and small-size occasion and uses.
The utility model content
The purpose of this utility model is to provide a kind of small-sized helium liquefaction device, is not suitable for to solve the prior art helium liquefier problem that middle-size and small-size occasion is used.
In order to achieve the above object, the technical scheme that adopts of the utility model is:
small-sized helium liquefaction device, include cooled cryostat, be provided with the liquid helium tank that confluxes in cooled cryostat, it is characterized in that: also comprise refrigeration machine, described refrigeration machine has the one-level cold head and is connected to the secondary cold head of one-level cold head lower end, the one-level of described refrigeration machine, the secondary cold head stretches into cooled cryostat from cooled cryostat crown center position, and secondary cold head bottom is stretched into liquid helium and is confluxed tank from the liquid helium tank top of confluxing, wherein the one-level cold head is equipped with the one-level cold header heat exchanger outward, the secondary cold head is equipped with the secondary cold header heat exchanger outward, secondary cold head bottom is equipped with and is suspended from the conflux condenser of liquefaction again of tank inner cavity top of liquid helium, described cooled cryostat top also is equipped with air inlet pipe, described air inlet pipe bottom is passed the one-level cold header heat exchanger successively, stretch into the liquid helium tank inner cavity top that confluxes after the secondary cold header heat exchanger, described cooled cryostat is equipped with drain pipe, and the drain pipe bottom is positioned at liquid helium and confluxes and have liquid outlet on the tube wall of tank.
Described small-sized helium liquefaction device is characterized in that: Moving caster is installed bottom described cooled cryostat.
The utility model liquid collecting helium production and memory function are integrated, and liquid helium output can reach 10 liters/day, and the device quality is light, volume is little, are convenient to mobile and transportation, are suitable for the little middle-size and small-size laboratory occasion of liquid helium consumption and use.
Description of drawings
Fig. 1 is the utility model structure side cutaway view.
Fig. 2 is the utility model structure top view.
The specific embodiment
As shown in Figure 1 and Figure 2.small-sized helium liquefaction device, include cooled cryostat 6, be provided with the liquid helium tank 5 that confluxes in cooled cryostat 6, also comprise refrigeration machine, refrigeration machine has one-level cold head 1 and is connected to the secondary cold head 8 of one-level cold head lower end, the one-level 1 of refrigeration machine, secondary cold head 8 stretches into cooled cryostat 6 from cooled cryostat 6 crown center positions, and secondary cold head 8 bottoms are stretched into liquid helium and are confluxed tank 5 from liquid helium conflux tank 5 tops, wherein outside one-level cold head 1, one-level cold header heat exchanger 2 is installed, the outer secondary cold header heat exchanger 3 that is equipped with of secondary cold head 8, secondary cold head 8 bottoms are equipped with and are suspended from the conflux condenser of liquefaction again 4 of tank 5 inner cavity tops of liquid helium, cooled cryostat 6 tops also are equipped with air inlet pipe 10, air inlet pipe 10 bottoms connect the import of one-level cold header heat exchanger 2, the gas one-level cold header heat exchanger 2 of flowing through successively, enter the condenser 4 that liquefies again after secondary cold header heat exchanger 3.Cooled cryostat 6 tops also are equipped with drain pipe 9, and drain pipe 9 bottoms are positioned at liquid helium and conflux and have liquid outlet on the tube wall of tank 5.Cooled cryostat 6 bottoms are equipped with Moving caster 7.
The utility model adopts 4.2K twin-stage Cryo Refrigerator as low-temperature receiver, and the high-purity helium of normal temperature is as unstripped gas.After helium enters air inlet pipe, at first be cooled to 40 ~ 60K warm area by the one-level cold header heat exchanger, continued to flow to the secondary cold header heat exchanger by the helium after precooling cooling, finally entering liquid helium confluxes in tank, and be sprayed onto on the condenser that liquefies again, the condenser that liquefied again liquefaction forms drop and splashes into liquid helium and conflux in tank.Helium successively replenishes, and liquid helium is just continuously produced, and the liquid helium that the liquid helium of production directly leaves cooled cryostat in confluxes in tank.The liquid helium that confluxes in tank can be discharged by drain pipe, is delivered to miscellaneous equipment and stores or use.The utility model can promote cooled cryostat by Moving caster, changes placement location, and castor locks behind the location with retaining mechanism.Used device funds of the utility model are few, and the production liquid helium cycle is short, are fit to the little occasion of liquid helium consumption, units such as laboratory, military project, scientific research.
Claims (2)
1. small-sized helium liquefaction device, include cooled cryostat, be provided with the liquid helium tank that confluxes in cooled cryostat, it is characterized in that: also comprise refrigeration machine, described refrigeration machine has the one-level cold head and is connected to the secondary cold head of one-level cold head lower end, the one-level of described refrigeration machine, the secondary cold head stretches into cooled cryostat from cooled cryostat crown center position, and secondary cold head bottom is stretched into liquid helium and is confluxed tank from the liquid helium tank top of confluxing, wherein the one-level cold head is equipped with the one-level cold header heat exchanger outward, the secondary cold head is equipped with the secondary cold header heat exchanger outward, secondary cold head bottom is equipped with and is suspended from the conflux condenser of liquefaction again of tank inner cavity top of liquid helium, described cooled cryostat top also is equipped with air inlet pipe, described air inlet pipe bottom is passed the one-level cold header heat exchanger successively, stretch into the liquid helium tank inner cavity top that confluxes after the secondary cold header heat exchanger, described cooled cryostat is equipped with drain pipe, and the drain pipe bottom is positioned at liquid helium and confluxes and have liquid outlet on the tube wall of tank.
2. small-sized helium liquefaction device according to claim 1, is characterized in that: Moving caster is installed bottom described cooled cryostat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659170 CN203024534U (en) | 2012-12-04 | 2012-12-04 | Small helium liquefaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659170 CN203024534U (en) | 2012-12-04 | 2012-12-04 | Small helium liquefaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203024534U true CN203024534U (en) | 2013-06-26 |
Family
ID=48648513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220659170 Expired - Fee Related CN203024534U (en) | 2012-12-04 | 2012-12-04 | Small helium liquefaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203024534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997614A (en) * | 2012-12-04 | 2013-03-27 | 安徽万瑞冷电科技有限公司 | Small helium liquefying device |
-
2012
- 2012-12-04 CN CN 201220659170 patent/CN203024534U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997614A (en) * | 2012-12-04 | 2013-03-27 | 安徽万瑞冷电科技有限公司 | Small helium liquefying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20151204 |
|
| EXPY | Termination of patent right or utility model |