CN215891951U - Liquid argon storage device with supercooling system - Google Patents
Liquid argon storage device with supercooling system Download PDFInfo
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- CN215891951U CN215891951U CN202122330377.1U CN202122330377U CN215891951U CN 215891951 U CN215891951 U CN 215891951U CN 202122330377 U CN202122330377 U CN 202122330377U CN 215891951 U CN215891951 U CN 215891951U
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Abstract
The utility model relates to a liquid argon storage device with a supercooling system, which comprises a first liquid argon conveying pipe and a first liquid nitrogen conveying pipe, wherein the first liquid argon conveying pipe is communicated with a heat source inlet end of a subcooler, a cold source inlet end of the subcooler is communicated with the first liquid nitrogen conveying pipe, a cold source outlet end of the subcooler is communicated with a first nitrogen gas discharge pipe, a heat source outlet end of the subcooler is communicated with a second liquid argon conveying pipe, the second liquid argon conveying pipe is communicated with a liquid argon storage tank, the liquid argon storage tank is provided with a first gas discharge pipe and a first liquid return pipe, a liquid nitrogen storage tank is arranged above the liquid argon storage tank and is provided with a spiral coil pipe, the first gas discharge pipe is communicated with the spiral coil pipe through a second gas discharge pipe, the second gas discharge pipe is provided with a self-standing regulating valve, the spiral coil pipe is communicated with the first liquid return pipe through a second liquid return pipe, and the second liquid return pipe is provided with a first one-way valve. The liquid argon is reduced from being heated and vaporized in the transferring and storing processes, and the liquid argon storage tank is convenient to adjust and use and has wide market prospect.
Description
Technical Field
The utility model relates to the field of liquid argon storage, in particular to a liquid argon storage device with a supercooling system.
Background
Air separation, referred to as air separation, is a process of separating its components (oxygen, nitrogen and rare gases such as argon and helium) from air by the cryogenic principle, generally by compressing the air and cooling it to a very low temperature or by liquefying it by expansion and then separating it in a rectifying column. For example, when liquid air is boiling, the more volatile nitrogen (boiling point-196 ℃) vaporizes first, and the argon vaporizes second (boiling point-186 ℃). The working principle of the air separation equipment is that according to the different boiling points of various gases in the air, the gases are pressurized, precooled and purified, and most of the cold energy provided by the turbine expansion agent is utilized to liquefy the gases and then rectify the liquids to obtain the required oxygen/nitrogen products. The air oxygen generation system comprises an air compressor system, a precooling system, a molecular sieve purification system, a pressurizing expansion agent system, a fractionating tower system, an oxygen/nitrogen compressor system and a pressure regulating station system.
High-purity liquid argon is an important economic product, the purity is high, the corresponding market value is high, the common technical problem of liquid argon temporary storage is that the gasification temperature of the liquid argon is too low, and the liquid argon is transferred and stored under the condition that the ambient temperature is normal temperature, in the prior art, equipment for transferring and storing the liquid argon is usually installed in a cold box, a heat insulation layer is usually installed in the cold box for reducing the heat exchange process, but heat exchange is still carried out with the environment serving as a high-temperature heat source in the transferring and storing process to ensure that part of oxygen is vaporized, the vaporized oxygen can increase the load of the equipment for transferring and storing the liquid argon, the equipment for transferring and storing the liquid argon needs to continuously maintain the safety pressure in the pressure relief, but continuous pressure relief also causes the loss of the product, and economic loss is caused, is not beneficial to large-scale popularization and application.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a liquid argon storage device with a supercooling system, which can reduce pressure relief and discharge caused by vaporization of liquid argon in the transferring and storing processes of the liquid argon, and is used for overcoming the defects in the prior art.
The technical scheme adopted by the utility model is as follows: a liquid argon storage device with a supercooling system comprises a first liquid argon conveying pipe and a first liquid nitrogen conveying pipe, wherein the outlet end of the first liquid argon conveying pipe is communicated with a heat source inlet end of a subcooler, a cold source inlet end of the subcooler is communicated with the outlet end of the first liquid nitrogen conveying pipe, a first nitrogen discharge pipe is communicated with a cold source outlet end of the subcooler, a heat source outlet end of the subcooler is communicated with an inlet end of a second liquid argon conveying pipe, a liquid argon storage tank is communicated with an outlet end of the second liquid argon conveying pipe, a first gas discharge pipe and a first liquid backflow pipe are arranged at the top of the liquid argon storage tank, a liquid nitrogen storage tank is arranged above the liquid argon storage tank, a spiral pipe is arranged in the liquid nitrogen storage tank, the top ends of the first gas discharge pipe and the spiral pipe are communicated with each other through a second gas discharge pipe, a self-supporting regulating valve is arranged on the second gas discharge pipe, and the bottom end of the spiral pipe is communicated with the first liquid backflow pipe through a second liquid backflow pipe, the second liquid return pipe is provided with a first one-way valve.
Preferably, the liquid nitrogen storage tank on be provided with liquid nitrogen storage tank feed liquor pipe, be provided with the liquid nitrogen booster pump on the first liquid nitrogen conveyer pipe, be provided with first governing valve on the first liquid nitrogen conveyer pipe between liquid nitrogen booster pump and the subcooler, first liquid nitrogen conveyer pipe and liquid nitrogen storage tank feed liquor pipe between first governing valve and the liquid nitrogen booster pump are linked together through second liquid nitrogen conveyer pipe, are provided with the second governing valve on the second liquid nitrogen conveyer pipe.
Preferably, the top of liquid nitrogen storage tank communicate with the second nitrogen gas discharge pipe, be provided with first nitrogen gas stop valve on the first nitrogen gas discharge pipe, be provided with the second nitrogen gas stop valve on the second nitrogen gas discharge pipe.
Preferably, the liquid nitrogen storage tank and the liquid argon storage tank are respectively provided with a liquid level meter.
Preferably, a third gas discharge pipe is arranged on the liquid argon storage tank on one side of the first gas discharge pipe, and a ventilation stop valve is arranged on the third gas discharge pipe.
Preferably, the bottom of the liquid argon storage tank is communicated with a third liquid nitrogen conveying pipe, and a finished product conveying stop valve, a first liquid flow meter and a first liquid argon booster pump are arranged on the third liquid nitrogen conveying pipe.
Preferably, first liquid argon conveyer pipe on be provided with second liquid argon booster pump and third governing valve, be provided with the second check valve on the second liquid argon conveyer pipe.
Preferably, the first liquid argon conveying pipe is further provided with a second liquid flow meter, the first liquid nitrogen conveying pipe between the first regulating valve and the subcooler is provided with a third liquid flow meter, and the second liquid nitrogen conveying pipe is provided with a fourth liquid flow meter.
The utility model has the beneficial effects that: firstly, the utility model reduces the pressure relief discharge of the high-purity liquid argon caused by the vaporization of the liquid argon in the transferring and storing processes, protects the safety of the transferring and storing equipment and reduces the economic loss of the high-purity liquid argon due to the continuous pressure relief of the high-purity liquid argon caused by the heated vaporization.
And a second liquid argon booster pump and a third regulating valve are arranged on the first liquid argon conveying pipe, and a second one-way valve is arranged on the second liquid argon conveying pipe. The first liquid argon conveying pipe is also provided with a second liquid flow meter, and the second liquid flow meter is arranged to conveniently feed back the flow of the liquid argon conveyed to the subcooler for subcooling; and a third liquid flow meter is arranged on the first liquid nitrogen conveying pipe between the first regulating valve and the subcooler. The third liquid flow meter is installed to facilitate feedback of the amount of liquid nitrogen used as a heat source of the subcooler.
Finally, the liquid nitrogen storage tank and the liquid argon storage tank are respectively provided with a liquid level meter. The liquid levels of the liquid nitrogen storage tank and the liquid argon storage tank are convenient to feed back.
The utility model has the advantages of simple structure, convenient operation, ingenious design, great improvement on the working efficiency, good social and economic benefits and easy popularization and use.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of detail a of fig. 1.
Fig. 3 is a partially enlarged schematic view of detail B of fig. 1.
Detailed Description
As shown in fig. 1, 2 and 3, a liquid argon storage device with a supercooling system comprises a first liquid argon conveying pipe 2 and a first liquid nitrogen conveying pipe 3, wherein the outlet end of the first liquid argon conveying pipe 2 is communicated with the heat source inlet end of a subcooler 4, the cold source inlet end of the subcooler 4 is communicated with the outlet end of the first liquid nitrogen conveying pipe 3, the cold source outlet end of the subcooler 4 is communicated with a first nitrogen gas discharge pipe 5, the heat source outlet end of the subcooler 4 is communicated with the inlet end of a second liquid argon conveying pipe 6, the outlet end of the second liquid argon conveying pipe 6 is communicated with a liquid argon storage tank 7, the top of the liquid argon storage tank 7 is provided with a first gas discharge pipe 8 and a first liquid reflux pipe 9, a liquid nitrogen storage tank 10 is arranged above the liquid argon storage tank 7, and a spiral coil 11 is arranged in the liquid argon storage tank 10,
the top ends of the first gas discharge pipe 8 and the spiral coil pipe 11 are communicated through a second gas discharge pipe 14, a self-supporting adjusting valve 15 is arranged on the second gas discharge pipe 14, the top end of the spiral coil pipe 11 serves as an inlet end of the spiral coil pipe 11, a spiral coil inlet pipe 12 is arranged on a liquid nitrogen storage tank 10 on one side of the inlet end of the spiral coil pipe 11, the inlet end of the spiral coil pipe 11 and the second gas discharge pipe 14 are communicated through the spiral coil inlet pipe 12, the bottom end of the spiral coil pipe 11 and the first liquid return pipe 9 are communicated through a second liquid return pipe 16, a first check valve 17 is arranged on the second liquid return pipe 16, the bottom end of the spiral coil pipe 11 serves as an outlet end of the spiral coil pipe 11, a spiral coil outlet pipe 13 is arranged on the liquid nitrogen storage tank 10 below the outlet end of the spiral coil pipe 11, and the outlet end of the spiral coil pipe 11 and the outlet end of the first liquid return pipe 9 are communicated through the spiral coil outlet pipe 13. The top end of the liquid nitrogen storage tank 10 is communicated with a second nitrogen gas discharge pipe 23, a first nitrogen gas stop valve 24 is arranged on the first nitrogen gas discharge pipe 5, and a second nitrogen gas stop valve 25 is arranged on the second nitrogen gas discharge pipe 23.
Liquid nitrogen storage tank 10 on be provided with liquid nitrogen storage tank feed liquor pipe 18, liquid nitrogen storage tank 10 inner chambers in liquid nitrogen storage tank feed liquor pipe 18 and the 11 outsides of helical coil are linked together, be provided with liquid nitrogen booster pump 19 on the first liquid nitrogen conveyer pipe 3, be provided with first governing valve 20 on the first liquid nitrogen conveyer pipe 3 between liquid nitrogen booster pump 19 and the subcooler 4, first liquid nitrogen conveyer pipe 3 between first governing valve 20 and the liquid nitrogen booster pump 19 and liquid nitrogen storage tank feed liquor pipe 18 are linked together through second liquid nitrogen conveyer pipe 21, be provided with second governing valve 22 on the second liquid nitrogen conveyer pipe 21. And the liquid nitrogen storage tank 10 and the liquid argon storage tank 7 are respectively provided with a liquid level meter 26. The liquid levels of the liquid nitrogen storage tank 10 and the liquid argon storage tank 7 are convenient to feed back. The second liquid nitrogen delivery pipe 21 is provided with a fourth liquid flow meter 38. The fourth liquid flow meter 38 is installed to facilitate the feedback of the instantaneous flow rate of the second liquid nitrogen feed pipe 21. When the liquid level in the liquid nitrogen storage tank 10 drops to a preset value, the second regulating valve 22 is opened, liquid nitrogen sequentially passes through the first liquid nitrogen conveying pipe 3, the second liquid nitrogen conveying pipe 21 and the liquid inlet pipe 18 of the liquid nitrogen storage tank and enters the inner cavity of the liquid nitrogen storage tank 10, and instantaneous flow is fed back through the fourth liquid flow meter 38 in the process. The closing of the second regulating valve 22 is again operated by the operator, conveniently according to flow and timing tools.
And a third gas discharge pipe 27 is arranged on the liquid argon storage tank 7 at one side of the first gas discharge pipe 8, and a gas exchange stop valve 28 is arranged on the third gas discharge pipe 27. The provision of the third gas discharge line 27 facilitates equalisation of the pressure of the liquid argon reservoir 7 during transfer of liquid argon.
The bottom of the liquid argon storage tank 7 is communicated with a third liquid nitrogen delivery pipe 29, and a finished product delivery stop valve 30, a first liquid flow meter 31 and a first liquid argon booster pump 32 are arranged on the third liquid nitrogen delivery pipe 29. The finished product of this product is outwards carried through the end of third liquid nitrogen conveyer pipe 29, for the quantity of conveniently acquireing the liquid argon of carrying for the user, and this product carries out the feedback through installing first fluidflowmeter 31.
First liquid argon conveyer pipe 2 on be provided with second liquid argon booster pump 33 and third governing valve 34, be provided with second check valve 35 on the second liquid argon conveyer pipe 6. The first liquid argon conveying pipe 2 is also provided with a second liquid flow meter 36, and the second liquid flow meter 36 is arranged to conveniently feed back the flow of the liquid argon conveyed to the subcooler 4 for subcooling; a third liquid flow meter 37 is provided on the first liquid nitrogen delivery pipe 3 between the first regulating valve 20 and the subcooler 4. The third liquid flow meter 37 is installed to facilitate feedback of the amount of liquid nitrogen used as a heat source for the subcooler 4.
The outer side of the subcooler 4 is provided with a cold box 1, and an inner cavity of the cold box 1 at the outer side of the subcooler 4 is provided with a heat insulation layer.
The use method of the product is as follows: as shown in fig. 1, 2 and 3, firstly, the process of transferring the liquid argon to the liquid argon storage tank 7 should be completed, the purified high-purity liquid argon is delivered to the heat source inlet end of the subcooler 4 through the first liquid argon delivery pipe 2, and meanwhile, the liquid nitrogen is delivered to the cold source inlet end of the subcooler 4 through the first liquid nitrogen delivery pipe 3; in the subcooler 4, liquid nitrogen delivered through the first liquid nitrogen delivery pipe 3 is heated and vaporized and is discharged to the atmosphere through the first nitrogen gas discharge pipe 5, the subcooled high-purity liquid argon is formed by being cooled through the first liquid argon delivery pipe 2 and is delivered to the liquid argon storage tank 7 through the heat source outlet end of the subcooler 4 and the second liquid argon delivery pipe 6 in sequence, the ventilation stop valve 28 is opened in the transfer process, the air pressure balance in the liquid argon storage tank 7 is maintained, after the liquid level fed back by the liquid argon storage tank 7 reaches the preset range, the first regulating valve 20, the ventilation stop valve 28 and the third regulating valve 34 are closed, and the process of transferring the liquid argon to the liquid argon storage tank 7 is completed.
After the process of transferring the liquid argon to the liquid argon storage tank 7 is completed, if the storage time of the supercooled high-purity liquid argon is too long, the supercooled high-purity liquid argon still can be heated to the vaporization temperature to vaporize part of the liquid argon in the liquid argon storage tank 7, when the pressure in the liquid argon storage tank 7 reaches a preset value, the self-supporting regulating valve 15 is opened, the liquefied argon enters an inner cavity of the spiral coil 11 through the first gas discharge pipe 8, the second gas discharge pipe 14 and the spiral disc inlet pipe 12 in sequence to exchange heat with liquid nitrogen temporarily stored in the liquid nitrogen storage tank 10 to be liquefied again, nitrogen forming a gas state in the process that the liquid argon is vaporized again is evacuated through the second nitrogen discharge pipe 23, and the oxygen being liquefied again enters the liquid argon storage tank 7 through the spiral disc outlet pipe 13, the second liquid reflux pipe 16 and the first liquid reflux pipe 9 in sequence to be temporarily stored.
By the embodiment, the pressure relief discharge of the high-purity liquid argon caused by vaporization of the liquid argon in the transferring and storing processes is reduced, the safety of the transferring and storing equipment is protected, and the economic loss of the high-purity liquid argon due to continuous pressure relief caused by heated vaporization is reduced.
The liquid argon storage device with the supercooling system meets the requirements of workers in the field of liquid argon storage, and has wide market prospect.
Claims (8)
1. A liquid argon storage device with a subcooling system, characterized in that: the device comprises a first liquid argon conveying pipe (2) and a first liquid nitrogen conveying pipe (3), wherein the outlet end of the first liquid argon conveying pipe (2) is communicated with a heat source inlet end of a subcooler (4), a cold source inlet end of the subcooler (4) is communicated with the outlet end of the first liquid nitrogen conveying pipe (3), a first nitrogen gas discharge pipe (5) is communicated with the cold source outlet end of the subcooler (4), a heat source outlet end of the subcooler (4) is communicated with an inlet end of a second liquid argon conveying pipe (6), a liquid argon storage tank (7) is communicated with the outlet end of the second liquid argon conveying pipe (6), a first gas discharge pipe (8) and a first liquid return pipe (9) are arranged at the top of the liquid argon storage tank (7), a liquid nitrogen storage tank (10) is arranged above the liquid argon storage tank (7), a spiral coil (11) is arranged in the liquid nitrogen storage tank (10), and the top ends of the first gas discharge pipe (8) and the spiral coil (11) are communicated through a second gas discharge pipe (14), a self-supporting adjusting valve (15) is arranged on the second gas discharge pipe (14), the bottom end of the spiral coil pipe (11) is communicated with the first liquid return pipe (9) through a second liquid return pipe (16), and a first one-way valve (17) is arranged on the second liquid return pipe (16).
2. The liquid argon storage device with a subcooling system, according to claim 1, wherein: liquid nitrogen storage tank (10) on be provided with liquid nitrogen storage tank feed liquor pipe (18), be provided with liquid nitrogen booster pump (19) on first liquid nitrogen conveyer pipe (3), be provided with first governing valve (20) on first liquid nitrogen conveyer pipe (3) between liquid nitrogen booster pump (19) and subcooler (4), first liquid nitrogen conveyer pipe (3) between first governing valve (20) and liquid nitrogen booster pump (19) and liquid nitrogen storage tank feed liquor pipe (18) are linked together through second liquid nitrogen conveyer pipe (21), be provided with second governing valve (22) on second liquid nitrogen conveyer pipe (21).
3. The liquid argon storage device with a subcooling system, according to claim 1, wherein: the top of liquid nitrogen storage tank (10) communicate with second nitrogen gas discharge pipe (23), be provided with first nitrogen gas stop valve (24) on first nitrogen gas discharge pipe (5), be provided with second nitrogen gas stop valve (25) on second nitrogen gas discharge pipe (23).
4. The liquid argon storage device with a subcooling system, according to claim 1, wherein: and liquid level meters (26) are respectively arranged on the liquid nitrogen storage tank (10) and the liquid argon storage tank (7).
5. The liquid argon storage device with a subcooling system, according to claim 1, wherein: and a third gas discharge pipe (27) is arranged on the liquid argon storage tank (7) on one side of the first gas discharge pipe (8), and a ventilation stop valve (28) is arranged on the third gas discharge pipe (27).
6. The liquid argon storage device with a subcooling system, according to claim 1, wherein: the bottom of liquid argon storage tank (7) communicate has third liquid nitrogen conveyer pipe (29), is provided with finished product transport stop valve (30), first liquid flowmeter (31) and first liquid argon booster pump (32) on third liquid nitrogen conveyer pipe (29).
7. The liquid argon storage device with a subcooling system, according to claim 2, wherein: the first liquid argon conveying pipe (2) is provided with a second liquid argon booster pump (33) and a third regulating valve (34), and the second liquid argon conveying pipe (6) is provided with a second one-way valve (35).
8. The liquid argon storage device with a subcooling system, according to claim 7, wherein: the first liquid argon conveying pipe (2) is further provided with a second liquid flowmeter (36), a third liquid flowmeter (37) is arranged on the first liquid nitrogen conveying pipe (3) between the first regulating valve (20) and the subcooler (4), and a fourth liquid flowmeter (38) is arranged on the second liquid nitrogen conveying pipe (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122330377.1U CN215891951U (en) | 2021-09-26 | 2021-09-26 | Liquid argon storage device with supercooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122330377.1U CN215891951U (en) | 2021-09-26 | 2021-09-26 | Liquid argon storage device with supercooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215891951U true CN215891951U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122330377.1U Active CN215891951U (en) | 2021-09-26 | 2021-09-26 | Liquid argon storage device with supercooling system |
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| Country | Link |
|---|---|
| CN (1) | CN215891951U (en) |
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2021
- 2021-09-26 CN CN202122330377.1U patent/CN215891951U/en active Active
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