CN212403471U - Helium recovery system - Google Patents
Helium recovery system Download PDFInfo
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- CN212403471U CN212403471U CN202020708659.3U CN202020708659U CN212403471U CN 212403471 U CN212403471 U CN 212403471U CN 202020708659 U CN202020708659 U CN 202020708659U CN 212403471 U CN212403471 U CN 212403471U
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Abstract
The utility model provides a helium gas recovery system, which comprises a liquid helium gasifier, a gas storage mechanism and a compressor for compressing gas into liquid; the liquid helium gasifier comprises a liquid helium inlet and a helium outlet, the gas storage mechanism comprises a gas inlet and a gas outlet, and the compressor comprises a material inlet and a material outlet; the liquid helium inlet is communicated with a container containing liquid helium to be recovered through a first pipeline, the helium outlet is communicated with the gas inlet through a second pipeline, and the gas outlet is communicated with the material inlet through a third pipeline; the gas storage mechanism is internally provided with a cavity, the upper part of the cavity is a spiral cavity, the lower part of the cavity is a conical cavity with the size gradually reduced from top to bottom, the lower part of the spiral cavity is communicated with the top of the conical cavity, a gas inlet is arranged on the upper part of the spiral cavity, and a gas outlet is arranged at the bottom of the conical cavity. The utility model discloses a helium recovery system has simple structure, be convenient for operation, advantage such as with low costs.
Description
Technical Field
The utility model relates to a gas recovery system, concretely relates to helium recovery system.
Background
Helium has stable chemical property, is inert gas and is widely applied to the field of scientific research. In practical applications, helium needs to be recovered and utilized due to the low helium yield. In the existing helium recovery system, a helium recovery compressor, a recovery air bag, a high-pressure steel cylinder set and other equipment are adopted to form the recovery system, a low-pressure air suction end of the helium compressor is connected with the recovery air bag and a helium recovery tail end in series, and the pressure of the helium return system is influenced by factors such as the air return amount of different users and the start and stop of the helium recovery compressor and is difficult to stabilize. Meanwhile, if the helium recovery system is not provided with a helium purity monitoring part, if the helium recovery system enters impurity gas, the liquid helium dewar is possibly blocked by ice, serious damage is caused to experimenters and valuable experimental equipment, and a large amount of impurity gas enters a helium liquid helium device, so that a helium liquefying device cannot work.
In order to solve the problem, the chinese utility model patent with publication number CN203428912U discloses a helium recovery device, the device includes a helium recovery compressor (30), a first helium recovery gasbag (2) and a high-pressure helium steel cylinder group (31), wherein seven mobile dewars are all connected with the first helium recovery gasbag (2), the helium recovery compressor (30) and the high-pressure helium steel cylinder group (31) in sequence through a helium recovery total inlet (36), the device is characterized in that a helium buffer tank (1) is connected in parallel on a pipeline between the helium recovery total inlet (36) and the first helium recovery gasbag (2), the helium buffer tank (1) is connected in series with a second helium recovery gasbag (3) and the helium recovery compressor (30) in sequence through a vacuum pump (6) and a helium circulating pump (7), each device is connected through a helium pipeline, a vacuum pumping port (4) is arranged on the helium buffer tank (1), Helium purity analysis pumping port (5), pressure measuring point and temperature measuring point. The structure tests the system recovery pressure by arranging the pressure measuring points and other structures, can adjust the pressure of the helium recovery system, and can analyze the purity of helium recovery and process in time.
The stability and the purity of the helium recovery system are well controlled by the structure, but the device mainly utilizes a large number of sensors and control systems, and also needs to perform sampling analysis, so that the cost is increased, and the operation is complex.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a helium recovery system simple structure, convenient operation, with low costs.
A helium gas recovery system comprises a liquid helium vaporizer, a gas storage mechanism and a compressor for compressing gas into liquid; the liquid helium gasifier comprises a liquid helium inlet and a helium outlet, the gas storage mechanism comprises a gas inlet and a gas outlet, and the compressor comprises a material inlet and a material outlet; the liquid helium inlet is communicated with a container containing liquid helium to be recovered through a first pipeline, the helium outlet is communicated with a gas inlet of the gas storage mechanism through a second pipeline, and a gas outlet of the gas storage mechanism is communicated with a material inlet of the compressor through a third pipeline; the inside cavity that is equipped with of gas storage mechanism, the cavity divide into two parts, and upper portion is a spiral chamber, and the lower part is the toper chamber that a size down gradually dwindles from last, the lower part in spiral chamber and the upper portion intercommunication in toper chamber, gas storage mechanism's gas inlet sets up the top in spiral chamber, gas storage mechanism's gas outlet sets up the bottom in toper chamber.
The utility model discloses in, further preferred scheme does, be provided with a transparent observation portion that is used for observing pipeline internal environment on the third pipeline.
The utility model discloses in, further preferred scheme does, transparent observation portion sets up the one end that is close to the compressor on the third pipeline.
The utility model discloses in, further preferred scheme does, helium recovery system still includes the gas tank, the gas tank pass through the fourth pipeline with the material export intercommunication of compressor.
The utility model discloses in, further preferred scheme does, the one end intercommunication that the compressor was kept away from to the fourth pipeline has a plurality of first branches, all be provided with the valve on the first branch pipe, the quantity and the first branch quantity phase-match of aeration tank, every aeration tank is linked together with a first branch respectively.
In the utility model, a further preferred scheme does, the gas access of gas storage mechanism sets up the top of cavity.
In the utility model, a further preferred scheme is that the gas storage mechanism is an air bag or a gas tank.
The utility model discloses in, further preferred scheme does, all be provided with the valve on first pipeline, second pipeline, the third pipeline.
In the utility model, a further preferred scheme does, the container that holds the liquid helium of treating to retrieve is the liquid helium bottle.
The utility model discloses in, further preferred scheme does, the one end intercommunication that liquid helium vaporizer was kept away from to first pipeline has a plurality of second branch pipes, the quantity and the second branch pipe of liquid helium bottle, every liquid helium bottle are linked together with a second branch pipe respectively, all are equipped with a valve on each second branch pipe.
Compared with the prior art, the beneficial effects of the utility model reside in that: by adopting the structure, the internal cavity of the gas storage mechanism is set to be the structure of the upper spiral cavity and the lower conical cavity, and after helium enters the cavity, the helium can accelerate the flow of gas in the spiral cavity under the action of the compressor, so that air in the cavity and other pipelines can be better discharged; and because the helium has a smaller specific gravity than air, the gas enters from the upper part and can better remove the air; meanwhile, the tapered cavity which is gradually reduced downwards is adopted, and the gas outlet is arranged at the bottom of the tapered cavity, so that the air can be further conveniently discharged, the amount of helium mixed in the air in the process of discharging the air by a system amount can be reduced, and the waste is avoided; meanwhile, as the traditional recovery system does not need to be provided with too many sensors and control systems, the operation is simpler.
Drawings
Fig. 1 is a schematic structural view of a helium recovery system according to embodiment 1 of the present invention;
wherein, 1, a liquid helium vaporizer; 2. a gas storage mechanism; 3. a compressor; 4. a liquid helium bottle; 5. an inflation tank; 6. a first conduit; 7. a second conduit; 8. a third pipeline; 9. a fourth conduit; 10. a valve; 11. a liquid helium inlet; 12. a helium gas outlet; 21. a gas inlet; 22. a gas outlet; 23. a helical cavity; 24. a tapered cavity; 31. a material inlet; 32. and (5) material outlet.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
A helium gas recovery system comprises a liquid helium vaporizer, a gas storage mechanism and a compressor for compressing gas into liquid; the liquid helium gasifier comprises a liquid helium inlet and a helium outlet, the gas storage mechanism comprises a gas inlet and a gas outlet, and the compressor comprises a material inlet and a material outlet; the liquid helium inlet is communicated with a container containing liquid helium to be recovered through a first pipeline, the helium outlet is communicated with a gas inlet of the gas storage mechanism through a second pipeline, and a gas outlet of the gas storage mechanism is communicated with a material inlet of the compressor through a third pipeline; the inside cavity that is equipped with of gas storage mechanism, the cavity divide into two parts, and upper portion is a spiral chamber, and the lower part is the toper chamber that a size down gradually dwindles from last, the lower part in spiral chamber and the upper portion intercommunication in toper chamber, gas storage mechanism's gas inlet sets up the top in spiral chamber, gas storage mechanism's gas outlet sets up the bottom in toper chamber.
The helium recovery process is as follows: liquid helium in the liquid helium container to be recovered enters the liquid helium vaporizer through the liquid helium inlet through the first pipeline, is changed into helium and then enters the gas storage mechanism through the second pipeline from the helium outlet; the helium gas in the gas storage mechanism firstly enters the cavity through a gas inlet of the gas storage mechanism, firstly enters the upper spiral cavity of the cavity, then downwards reaches the conical cavity through the spiral cavity, and then enters the third pipeline through a gas outlet arranged at the bottom of the conical cavity; then enters a material inlet of the compressor through a third pipeline, is discharged from a material outlet after being compressed, and is recycled through an external recycling container.
By adopting the structure, the internal cavity of the gas storage mechanism is set to be the structure of the upper spiral cavity and the lower conical cavity, and after helium enters the cavity, the helium can accelerate the flow of gas in the spiral cavity under the action of the compressor, so that air in the cavity and other pipelines can be better discharged; and because the helium has a smaller specific gravity than air, the gas enters from the upper part and can better remove the air; meanwhile, the tapered cavity which is gradually reduced downwards is adopted, and the gas outlet is arranged at the bottom of the tapered cavity, so that the air can be further conveniently discharged, the amount of helium mixed in the air in the process of discharging the air by a system amount can be reduced, and the waste is avoided; meanwhile, as the traditional recovery system does not need to be provided with too many sensors and control systems, the operation is simpler.
The utility model provides a spiral cavity can regard as spiral helicine pipeline, through the setting of spiral helicine pipeline, can accelerate the gas flow.
In order to facilitate checking of the air removal efficiency and guarantee the purity of the recovered liquid helium, a transparent observation part for observing the internal environment of the pipeline can be arranged on the third pipeline; although liquid helium is gasified, the temperature of the gasified helium is very low, and in the process of discharging air, air residue inevitably occurs, wherein the air residue comprises water vapor, and the residual water vapor can form frost crystals on the inner wall of the pipeline after meeting the low-temperature helium which enters after the air is discharged, so that the observation of the frost crystals in the pipeline is an important characteristic point for judging whether the air is basically completely removed; the transparent viewing portion may be a member made of a transparent material, such as glass, transparent plastic, or the like; the shape of the transparent observation part is not limited, and only needs to be capable of observing the inside of the pipeline, and can be in a window shape similar to a rectangle or a circular ring shape; the closer to the compressor, the more the transparent observing part is positioned, the more the air in the front air storage mechanism and the pipeline is basically completely removed, and the corresponding preferable scheme is that the transparent observing part is arranged at one end of the third pipeline, which is close to the compressor.
In order to facilitate the recovery of helium, the helium recovery system further comprises an inflation tank, and the inflation tank is communicated with the material outlet of the compressor through a fourth pipeline; in order to facilitate recovery, one end, far away from the compressor, of the fourth pipeline is communicated with a plurality of first branch pipes, valves are arranged on the first branch pipes, the number of the inflatable tanks is matched with that of the first branch pipes, and each inflatable tank is communicated with one first branch pipe; by the arrangement, the air containing the exhaust in the early stage can be collected by one of the aeration tanks, and the subsequent helium can be collected by other aeration tanks, so that different purities can be matched, the aeration tank containing the air in the early stage contains part of the helium, and the air is compressed, has low temperature and can be applied as a scene needing cooling in industry; and the subsequent helium has very high purity and can be used for scientific research and application.
In order to further improve the effect of exhausting air, the air inlet of the air storage mechanism is arranged at the top of the cavity.
In the utility model discloses in, gas storage mechanism is the container that can be used for the storage gas, like gasbag or gas pitcher.
For convenience of control and operation, valves may be disposed on the first, second and third pipes.
In the utility model, the container for containing the liquid helium to be recovered is a liquid helium bottle.
In order to improve the efficiency of helium recovery, a plurality of second branch pipes are communicated with one end of the first pipeline, which is far away from the liquid helium vaporizer, the number of the liquid helium bottles is equal to that of the second branch pipes, each liquid helium bottle is communicated with one second branch pipe, and each second branch pipe is provided with a valve; through the arrangement, the helium in the liquid helium bottles can be recovered at one time or one by one, the specific sequence of recovering the helium in the liquid helium bottles is controlled by opening and closing the valve, and the recovered liquid helium bottles can be replaced in the process; the waste and the loss of the equipment caused by the fact that the whole equipment needs to be started and stopped for many times due to the fact that the liquid helium bottle needs to be replaced continuously under the condition of a single liquid helium bottle are avoided.
Example 1
Referring to fig. 1, a helium gas recovery system includes a liquid helium vaporizer 1, a gas storage mechanism 2, and a compressor 3 for compressing gas into liquid; the liquid helium gasifier comprises a liquid helium inlet 11 and a helium outlet 12, the gas storage mechanism comprises a gas inlet 21 and a gas outlet 22, and the compressor comprises a material inlet 31 and a material outlet 32; the liquid helium inlet is communicated with a container containing liquid helium to be recovered through a first pipeline 6, the helium outlet is communicated with a gas inlet of a gas storage mechanism through a second pipeline 7, and a gas outlet of the gas storage mechanism is communicated with a material inlet of the compressor through a third pipeline 8; the gas storage mechanism is internally provided with a cavity which is divided into two parts, the upper part is a spiral cavity 23, the lower part is a conical cavity 24 with the size gradually reduced from top to bottom, the lower part of the spiral cavity is communicated with the top of the conical cavity, a gas inlet of the gas storage mechanism is arranged at the top of the spiral cavity, and a gas outlet of the gas storage mechanism is arranged at the bottom of the conical cavity; the helium recovery system further comprises an inflation tank 5, the inflation tank is communicated with a material outlet of the compressor through a fourth pipeline 9, the gas storage mechanism is an air bag or a gas tank, and a gas inlet of the gas storage mechanism is arranged at the top of the cavity; valves 10 are arranged on the first pipeline, the second pipeline and the third pipeline, and the container for containing liquid helium to be recovered is a liquid helium bottle 4.
Example 2
A helium recovery system, there is a transparent observation department used for allowing observer to observe the internal environment of pipeline on the said third pipeline; the transparent observation part is arranged at one end of the third pipeline close to the compressor; the remaining structure, components, and connection relationship are the same as those in embodiment 1.
Example 3
According to the helium recovery system, one end, far away from a compressor, of a fourth pipeline is communicated with a plurality of first branch pipes, valves are arranged on the first branch pipes, the number of inflation tanks is matched with that of the first branch pipes, and each inflation tank is communicated with one first branch pipe; one end of the first pipeline, which is far away from the liquid helium gasifier, is communicated with a plurality of second branch pipes, the number of the liquid helium bottles is equal to that of the second branch pipes, each liquid helium bottle is communicated with one second branch pipe, and each second branch pipe is provided with a valve; the remaining structure, components, and connection relationship are the same as those in embodiment 1.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A helium recovery system, characterized by: the helium gas recovery system comprises a liquid helium gasifier, a gas storage mechanism and a compressor for compressing gas into liquid; the liquid helium gasifier comprises a liquid helium inlet and a helium outlet, the gas storage mechanism comprises a gas inlet and a gas outlet, and the compressor comprises a material inlet and a material outlet; the liquid helium inlet is communicated with a container containing liquid helium to be recovered through a first pipeline, the helium outlet is communicated with a gas inlet of the gas storage mechanism through a second pipeline, and a gas outlet of the gas storage mechanism is communicated with a material inlet of the compressor through a third pipeline; the inside cavity that is equipped with of gas storage mechanism, the cavity divide into two parts, and upper portion is a spiral chamber, and the lower part is the toper chamber that a size down gradually dwindled from last, the lower part in spiral chamber and the top intercommunication in toper chamber, gas storage mechanism's gas inlet sets up the upper portion in spiral chamber, gas storage mechanism's gas outlet sets up the bottom in toper chamber.
2. The helium recovery system of claim 1, wherein: and the third pipeline is provided with a transparent observation part for observing the internal environment of the pipeline.
3. The helium recovery system of claim 2, wherein: the transparent observation part is arranged at one end of the third pipeline close to the compressor.
4. The helium recovery system of claim 1, wherein: the helium recovery system further comprises an inflation tank, and the inflation tank is communicated with the material outlet of the compressor through a fourth pipeline.
5. The helium recovery system of claim 4, wherein: one end of the fourth pipeline, which is far away from the compressor, is communicated with a plurality of first branch pipes, valves are arranged on the first branch pipes, the number of the inflation tanks is matched with the number of the first branch pipes, and each inflation tank is communicated with one first branch pipe respectively.
6. The helium recovery system of claim 1, wherein: and a gas inlet of the gas storage mechanism is arranged at the top of the cavity.
7. The helium recovery system of claim 1, wherein: the gas storage mechanism is an air bag or a gas tank.
8. The helium recovery system of any of claims 1-7, wherein: and valves are arranged on the first pipeline, the second pipeline and the third pipeline.
9. The helium recovery system of any of claims 1-7, wherein: and the container for containing the liquid helium to be recovered is a liquid helium bottle.
10. The helium recovery system of claim 9, wherein: one end of the first pipeline, which is far away from the liquid helium gasifier, is communicated with a plurality of second branch pipes, the number of the liquid helium bottles is equal to that of the second branch pipes, each liquid helium bottle is communicated with one second branch pipe, and each second branch pipe is provided with a valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020708659.3U CN212403471U (en) | 2020-04-30 | 2020-04-30 | Helium recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020708659.3U CN212403471U (en) | 2020-04-30 | 2020-04-30 | Helium recovery system |
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| CN212403471U true CN212403471U (en) | 2021-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893713A (en) * | 2022-05-09 | 2022-08-12 | 中山市粤佳气体有限公司 | Gas filling device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893713A (en) * | 2022-05-09 | 2022-08-12 | 中山市粤佳气体有限公司 | Gas filling device and method |
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