CN219913697U - Supercooled liquid oxygen preparation system - Google Patents
Supercooled liquid oxygen preparation system Download PDFInfo
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- CN219913697U CN219913697U CN202320917861.0U CN202320917861U CN219913697U CN 219913697 U CN219913697 U CN 219913697U CN 202320917861 U CN202320917861 U CN 202320917861U CN 219913697 U CN219913697 U CN 219913697U
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- liquid oxygen
- supercooled
- regulating valve
- valve
- inlet
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- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title claims abstract description 223
- 239000013526 supercooled liquid Substances 0.000 title claims abstract description 98
- 238000002360 preparation method Methods 0.000 title abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 64
- 238000004781 supercooling Methods 0.000 claims abstract description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 46
- 229910052757 nitrogen Inorganic materials 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000009835 boiling Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
Classifications
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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
- F25J1/0017—Oxygen
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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
- F25J1/02—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
- F25J1/0221—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 the cold stored in an external cryogenic component in an open refrigeration loop
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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
- F25J1/02—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
- F25J1/0244—Operation; Control and regulation; Instrumentation
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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
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/42—Nitrogen
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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
- F25J2250/00—Details related to the use of reboiler-condensers
- F25J2250/02—Bath type boiler-condenser using thermo-siphon effect, e.g. with natural or forced circulation or pool boiling, i.e. core-in-kettle heat exchanger
-
- 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
- F25J2290/34—Details about subcooling of liquids
Abstract
The utility model provides a supercooled liquid oxygen preparation system, which belongs to the technical field of aerospace, and comprises: when the supercooling liquid oxygen device is used, liquid oxygen to be supercooled enters a first inlet channel through the liquid oxygen conveying channel and is conveyed to a first medium channel of the supercooler, supercooling medium enters a second medium channel of the supercooler through a second inlet channel, the liquid oxygen to be supercooled exchanges heat with the supercooling medium in the supercooler to obtain pre-supercooled liquid oxygen, the pre-supercooled liquid oxygen enters the liquid oxygen conveying channel after a first regulating valve through a first outlet channel, the pre-supercooled liquid oxygen is mixed with the liquid oxygen to be supercooled, the flow of the liquid oxygen to be supercooled is controlled by regulating the first regulating valve, and the flow of the pre-supercooled liquid oxygen is controlled by regulating the second regulating valve, so that the mixing proportion of the pre-supercooled liquid oxygen and the liquid oxygen to be supercooled is controlled, and the supercooled liquid oxygen with required temperature is obtained; the supercooled liquid oxygen preparation system provided by the utility model solves the problem of low temperature regulation accuracy of supercooled liquid oxygen in the prior art.
Description
Technical Field
The utility model relates to the technical field of aerospace, in particular to a supercooled liquid oxygen preparation system.
Background
After supercooling, the liquid oxygen has reduced temperature and increased density, and can store more liquid oxygen under the same container volume. Supercooled liquid oxygen is supercooled from normal boiling point 90K (1140 kg/m 3) to 66.7K (1250 kg/m 3), the density of the liquid oxygen is increased by 9.8%, the scale and the total weight of the storage container are reduced by increasing the storage quality of the liquid oxygen in unit volume, and the supercooled liquid oxygen has important practical significance in the industry fields with high requirements on the overall weight control of the aircraft, such as the aerospace field. Meanwhile, as the supercooling degree of liquid oxygen is increased, the single-phase flow state is more favorably maintained when the liquid oxygen flows in the system, and the flow stability and the process controllability can be improved.
The existing liquid oxygen supercooling process mainly supercools liquid oxygen (standard boiling point is 90.18K) in a liquid oxygen supercooler through liquid nitrogen (standard boiling point is 77K), and temperature monitoring is arranged at a final output end.
However, in the heat exchange process, if the temperature of the liquid oxygen subjected to supercooling by liquid nitrogen is lower than the required temperature, the subsequent supercooling temperature of the liquid oxygen can only be adjusted, and the temperature rise adjustment of the supercooled liquid oxygen cannot be performed, so that the accuracy of controlling the supercooled liquid oxygen temperature is not high.
Disclosure of Invention
Therefore, the utility model aims to overcome the defect of low temperature regulation accuracy of the supercooled liquid oxygen in the prior art, thereby providing a supercooled liquid oxygen preparation system.
In order to solve the above technical problems, the present utility model provides a supercooled liquid oxygen preparation system, comprising:
the liquid oxygen storage device comprises a liquid oxygen delivery pipeline, a liquid oxygen storage container and a liquid oxygen storage container, wherein an inlet of the liquid oxygen delivery pipeline is communicated with the liquid oxygen container to be supercooled, an outlet of the liquid oxygen delivery pipeline is communicated with the supercooled liquid oxygen storage container, and a first regulating valve is arranged on the liquid oxygen delivery pipeline;
the subcooler is provided with a first medium channel and a second medium channel, wherein an inlet of the first medium channel is communicated with a liquid oxygen conveying pipeline before the first regulating valve through a first inlet pipeline, an outlet of the first medium channel is communicated with a liquid oxygen conveying pipeline after the first regulating valve through a first outlet pipeline, and a second regulating valve is arranged on the first inlet pipeline and/or the first outlet pipeline;
the inlet of the second medium channel is communicated with the supercooling medium through a second inlet pipeline, and the outlet of the second medium channel is communicated with a second outlet pipeline.
Optionally, the liquid oxygen delivery conduit is provided with, on a section preceding the first regulating valve: a liquid oxygen flowmeter.
Optionally, the liquid oxygen delivery conduit is provided with, on a section preceding the first regulating valve: a thermometer and a manometer.
Optionally, the liquid oxygen delivery pipeline is provided with, before the first regulating valve: the first inlet pipeline is communicated with the liquid oxygen conveying pipeline before the first stop valve.
Optionally, the first inlet pipe is provided with: a second regulating valve, a thermometer and a pressure gauge.
Optionally, the first outlet pipe is provided with: a second shut-off valve, a thermometer and a pressure gauge.
Optionally, the liquid oxygen delivery conduit is provided with, on a section subsequent to the first regulating valve: a third shut-off valve, a pressure gauge and a thermometer.
Optionally, the second medium channel is a tank adapted to contain a liquid supercooling medium.
Optionally, the second inlet pipe is provided with: the liquid nitrogen flowmeter, the third regulating valve and the fourth stop valve.
Optionally, a nitrogen bleed valve is mounted on the second outlet conduit.
The technical scheme of the utility model has the following advantages:
1. according to the supercooled liquid oxygen preparation system provided by the utility model, liquid oxygen to be supercooled in the liquid oxygen container to be supercooled enters the first inlet channel through the liquid oxygen conveying pipeline, the liquid oxygen to be supercooled enters the first medium channel of the supercooler through the first inlet channel, the supercooled medium enters the second medium channel of the supercooler through the second inlet channel, and the liquid oxygen to be supercooled exchanges heat with the supercooled medium in the supercooler to obtain pre-supercooled liquid oxygen; the supercooling medium which is excessively poured or gasified by heat exchange in the supercooler is discharged through a second outlet channel; the pre-supercooled liquid oxygen enters the liquid oxygen conveying pipeline behind the first regulating valve through the first outlet pipeline, the pre-supercooled liquid oxygen is mixed with the liquid oxygen to be supercooled, the flow of the liquid oxygen to be supercooled is controlled through regulating the first regulating valve, the flow of the pre-supercooled liquid oxygen is controlled through regulating the second regulating valve, when the pre-supercooled liquid oxygen is higher than the required temperature, the flow of the pre-supercooled liquid oxygen is higher than the flow of the liquid oxygen to be supercooled, the supercooled liquid oxygen with the required temperature is obtained, when the pre-supercooled liquid oxygen temperature is lower than the required temperature, the flow of the pre-supercooled liquid oxygen is lower than the flow of the liquid oxygen to be supercooled, and the supercooled liquid oxygen with the required temperature is obtained, so that the defect of lower temperature regulation accuracy of the supercooled liquid oxygen in the prior art is overcome.
2. The supercooled liquid oxygen preparation system provided by the utility model is characterized in that the liquid oxygen flowmeter is arranged on the section of the liquid oxygen conveying pipeline in front of the first regulating valve and is used for monitoring the flow of liquid oxygen to be supercooled.
3. The supercooled liquid oxygen preparation system provided by the utility model is characterized in that a thermometer and a pressure gauge are arranged on the section of the liquid oxygen conveying pipeline in front of the first regulating valve and are used for monitoring the temperature and the pressure of liquid oxygen to be supercooled.
4. According to the supercooled liquid oxygen preparation system provided by the utility model, the first stop valve is arranged in front of the first regulating valve on the liquid oxygen conveying pipeline and is used for closing the liquid oxygen conveying pipeline, and the first inlet pipeline is communicated with the liquid oxygen conveying pipeline in front of the first stop valve, so that the liquid oxygen to be supercooled is conveyed into the supercooler through the first inlet pipeline.
5. According to the supercooled liquid oxygen preparation system provided by the utility model, the second regulating valve on the first inlet pipeline is used for regulating the flow of the liquid oxygen to be supercooled entering the supercooler, so that the pre-supercooling degree is controlled, and the temperature and the pressure of the liquid oxygen to be supercooled before entering the supercooler are monitored through the thermometer and the manometer which are arranged on the first inlet pipeline.
6. According to the supercooled liquid oxygen preparation system provided by the utility model, the second stop valve on the first outlet pipeline can be used for closing the first outlet pipeline when the supercooling is not needed by using the supercooler, and the thermometer and the manometer on the first outlet pipeline are used for monitoring the temperature and the pressure of the pre-supercooled liquid oxygen output from the supercooler.
7. According to the supercooled liquid oxygen preparation system provided by the utility model, the third stop valve arranged on the section of the liquid oxygen conveying pipeline behind the first regulating valve can cut off the pipeline when supercooled liquid oxygen is not prepared, and the temperature and the pressure of the supercooled liquid oxygen are monitored through the pressure gauge and the thermometer arranged on the section of the liquid oxygen conveying pipeline behind the first regulating valve.
8. According to the supercooled liquid oxygen preparation system provided by the utility model, the second medium channel is suitable for accommodating the liquid supercooled medium, so that the first medium channel is immersed in the supercooled medium, and heat exchange between the liquid oxygen to be supercooled and the supercooled medium is realized.
9. According to the supercooled liquid oxygen preparation system provided by the utility model, the liquid nitrogen flowmeter arranged on the second inlet pipeline is used for monitoring the flow of liquid nitrogen, and the flow of liquid nitrogen is regulated through the third regulating valve, so that the heat exchange amount of liquid oxygen to be supercooled in the supercooler is controlled, and when the liquid nitrogen is not required to be conveyed into the supercooler. The second inlet duct may be shut off by a fourth shut-off valve.
10. According to the supercooled liquid oxygen preparation system provided by the utility model, the nitrogen discharge valve arranged on the second outlet pipeline is used for controlling the discharge of heat exchange gasified nitrogen in the supercooler, so that the pressure in the second medium channel of the supercooler is controlled.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of one embodiment of a supercooled liquid oxygen production system provided in an example of the present utility model.
Reference numerals illustrate:
1. a liquid oxygen delivery conduit; 2. a subcooler; 3. a liquid oxygen container to be supercooled; 4. a supercooled liquid oxygen storage vessel; 5. a first regulating valve; 6. a first media channel; 7. a second media channel; 8. a first inlet duct; 9. a first outlet conduit; 10. a second regulating valve; 11. a second inlet duct; 12. a second outlet conduit; 13. a liquid oxygen flow meter; 14. a first stop valve; 15. a second shut-off valve; 16. a third stop valve; 17. a liquid nitrogen flowmeter; 18. a third regulating valve; 19. a fourth shut-off valve; 20. a nitrogen bleed valve.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
The embodiment provides a supercooled liquid oxygen preparation system capable of accurately adjusting the temperature of supercooled liquid oxygen, which is used for supercooling liquid oxygen to be supercooled.
As shown in fig. 1, a specific embodiment of a supercooled liquid oxygen preparation system provided in this embodiment includes: a liquid oxygen delivery pipe 1 and a subcooler 2; the inlet of the liquid oxygen conveying pipeline 1 is communicated with a liquid oxygen container 3 to be supercooled, the outlet of the liquid oxygen conveying pipeline 1 is communicated with a supercooled liquid oxygen storage container 4, and a first regulating valve 5 is arranged on the liquid oxygen conveying pipeline 1; the subcooler 2 is provided with a first medium channel 6 and a second medium channel 7, wherein the inlet of the first medium channel 6 is communicated with the liquid oxygen delivery pipeline 1 before the first regulating valve 5 through a first inlet pipeline 8, the outlet of the first medium channel 6 is communicated with the liquid oxygen delivery pipeline 1 after the first regulating valve 5 through a first outlet pipeline 9, and a second regulating valve 10 is arranged on the first inlet pipeline 8 and/or the first outlet pipeline 9; the inlet of the second medium channel 7 is communicated with the supercooling medium through a second inlet pipeline 11, and the outlet of the second medium channel 7 is communicated with a second outlet pipeline 12.
When in use, the liquid oxygen to be supercooled in the liquid oxygen container 3 enters the first inlet channel through the liquid oxygen conveying pipeline 1, the liquid oxygen to be supercooled is conveyed to the first medium channel of the supercooler 2 through the first inlet channel, the supercooling medium is conveyed to the second medium channel of the supercooler 2 through the second inlet channel, and the liquid oxygen to be supercooled exchanges heat with the supercooling medium in the supercooler 2 to obtain pre-supercooled liquid oxygen; the supercooling medium of heat exchange gasification in the supercooler 2 is discharged through the second outlet channel; the pre-supercooled liquid oxygen enters the liquid oxygen conveying pipeline 1 after the first regulating valve 5 through the first outlet pipeline 9, and the pre-supercooled liquid oxygen is mixed with the liquid oxygen to be supercooled to obtain supercooled liquid oxygen, and the supercooled liquid oxygen is conveyed into the supercooled liquid oxygen storage container 4; the flow of the liquid oxygen to be supercooled is controlled by adjusting the first adjusting valve 5, the flow of the pre-supercooled liquid oxygen is controlled by adjusting the second adjusting valve 10, when the pre-supercooled liquid oxygen is higher than the required temperature, the flow of the pre-supercooled liquid oxygen is higher than the flow of the liquid oxygen to be supercooled, the supercooled liquid oxygen with the required temperature is obtained, and when the pre-supercooled liquid oxygen temperature is lower than the required temperature, the flow of the pre-supercooled liquid oxygen is lower than the flow of the liquid oxygen to be supercooled, and the supercooled liquid oxygen with the required temperature is obtained. The supercooled liquid oxygen preparation system provided by the embodiment solves the problem of low temperature regulation accuracy of supercooled liquid oxygen in the prior art. Specifically, the outlet end of the liquid oxygen delivery pipe 1 is communicated with a supercooled liquid oxygen storage container 4, and supercooled liquid oxygen is stored through a target container.
As shown in fig. 1, in the supercooled liquid oxygen production system provided in this embodiment, the liquid oxygen delivery pipe 1 is provided with, on a stage preceding the first regulating valve 5: a liquid oxygen flow meter 13. In use, the flow of liquid oxygen to be subcooled in the liquid oxygen delivery conduit 1 is monitored by the liquid oxygen flow meter 13.
As shown in fig. 1, in the supercooled liquid oxygen production system provided in this embodiment, the liquid oxygen delivery pipe 1 is provided with, on a stage preceding the first regulating valve 5: a thermometer and a manometer. In use, the flow of liquid oxygen to be supercooled in the liquid oxygen delivery pipe 1 is monitored by the thermometer and the manometer.
As shown in fig. 1, in the supercooled liquid oxygen preparation system provided in this embodiment, the liquid oxygen delivery pipe 1 is provided with, before the first regulating valve 5: a first shut-off valve 14, said first inlet conduit 8 being in communication with the liquid oxygen delivery conduit 1 before said first shut-off valve 14. In use, the first shut-off valve 14 serves to shut off the liquid oxygen supply line 1, and liquid oxygen to be subcooled is supplied to the subcooler 2 via the first inlet line 8 which communicates with the liquid oxygen supply line 1 upstream of the first shut-off valve 14. In addition, as an alternative, the first inlet conduit 8 may also be in direct communication with the liquid oxygen vessel 3 to be subcooled.
As shown in fig. 1, in the supercooled liquid oxygen preparation system provided in this embodiment, the first inlet pipe 8 is provided with: a second regulating valve 10, a thermometer and a pressure gauge. In use, the flow of liquid oxygen to be subcooled entering the subcooler 2 is regulated by the second regulating valve 10 and the temperature and pressure of the liquid oxygen to be subcooled in the first inlet conduit 8 are monitored by the thermometer and manometer. In addition, a regulating valve may be added to the first outlet pipe 9.
As shown in fig. 1, in the supercooled liquid oxygen preparation system provided in this embodiment, the first outlet pipe 9 is provided with: a second shut-off valve 15, a thermometer and a pressure gauge. In use, the flow of pre-supercooled liquid oxygen output from the subcooler 2 is regulated by the second shut-off valve 15 and the temperature and pressure of pre-supercooled liquid oxygen in the first outlet conduit 9 are monitored by the thermometer and manometer. In addition, a shut-off valve may be added to the first inlet pipe 8.
As shown in fig. 1, in the supercooled liquid oxygen production system provided in this embodiment, the liquid oxygen delivery pipe 1 is provided with, on a stage subsequent to the first regulating valve 5: a third shut-off valve 16, a pressure gauge and a thermometer. In use, the liquid oxygen supply line 1 can be shut off by the third shut-off valve 16, and the pressure and temperature of the supercooled liquid oxygen in the section of the liquid oxygen supply line 1 downstream of the first control valve 5 can be monitored by the pressure gauge and the thermometer.
As shown in fig. 1, in the supercooled liquid oxygen preparing system provided in this embodiment, the second medium channel 7 is a tank adapted to accommodate a liquid supercooled medium. When in use, the first medium channel 6 is soaked in a tank body containing liquid supercooling medium, so that the liquid oxygen to be supercooled in the first medium channel 6 exchanges heat with the supercooling medium in the second medium channel 7. In addition, as an alternative embodiment, the second medium channel 7 may be a sleeve structure sleeved outside the first medium channel 6.
As shown in fig. 1, in the supercooled liquid oxygen preparation system provided in this embodiment, the second inlet pipe 11 is provided with: a liquid nitrogen flow meter 17, a third regulating valve 18 and a fourth shut-off valve 19. In use, the flow rate of the liquid nitrogen in the second inlet pipeline 11 is monitored through the liquid nitrogen flowmeter 17, and the flow rate of the liquid nitrogen is regulated through the third regulating valve 18, so that the heat exchange amount in the subcooler 2 is controlled, and when the liquid nitrogen does not need to be conveyed into the second medium channel 7, the second inlet pipeline 11 can be shut off through the fourth stop valve 19. In addition, the method comprises the following steps. As an alternative embodiment, the supercooling medium may not use liquid nitrogen, but may be other supercooling medium capable of exchanging heat with the liquid oxygen to be supercooled.
As shown in fig. 1, in the supercooled liquid oxygen production system provided in this embodiment, the nitrogen discharge valve 20 is installed on the second outlet pipe 12. In use, the discharge of heat exchanged gasified nitrogen in the subcooler 2 is controlled by the nitrogen discharge valve 20, thereby controlling the pressure in the second medium passage 7 of the subcooler 2.
Application method
As shown in fig. 1, when the supercooled liquid oxygen preparation system provided in this embodiment is used, the liquid oxygen to be supercooled in the liquid oxygen container 3 enters the first inlet channel through the liquid oxygen conveying pipeline 1, and is conveyed to the first medium channel of the subcooler 2, and the supercooled medium is conveyed to the second medium channel of the subcooler 2 through the second inlet channel, and the liquid oxygen to be supercooled exchanges heat with the supercooled medium in the subcooler 2, so as to obtain pre-supercooled liquid oxygen; the pre-supercooled liquid oxygen enters the liquid oxygen conveying pipeline 1 after the first regulating valve 5 through the first outlet pipeline 9, the pre-supercooled liquid oxygen is mixed with the liquid oxygen to be supercooled, the flow of the liquid oxygen to be supercooled is controlled through regulating the first regulating valve 5, the flow of the pre-supercooled liquid oxygen is controlled through regulating the second regulating valve 10, so that the mixing proportion of the pre-supercooled liquid oxygen and the liquid oxygen to be supercooled is controlled, the supercooled liquid oxygen with the required temperature is obtained, and the problem that the temperature regulation accuracy of the supercooled liquid oxygen in the prior art is lower is solved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. A supercooled liquid oxygen production system, comprising:
the liquid oxygen storage device comprises a liquid oxygen conveying pipeline (1), wherein an inlet of the liquid oxygen conveying pipeline (1) is communicated with a liquid oxygen container (3) to be supercooled, an outlet of the liquid oxygen conveying pipeline (1) is communicated with a supercooled liquid oxygen storage container (4), and a first regulating valve (5) is arranged on the liquid oxygen conveying pipeline (1);
-a subcooler (2) having a first medium channel (6) and a second medium channel (7), an inlet of the first medium channel (6) being in communication with the liquid oxygen delivery conduit (1) before the first regulating valve (5) through a first inlet conduit (8), an outlet of the first medium channel (6) being in communication with the liquid oxygen delivery conduit (1) after the first regulating valve (5) through a first outlet conduit (9), the first inlet conduit (8) and/or the first outlet conduit (9) being provided with a second regulating valve (10);
the inlet of the second medium channel (7) is communicated with the supercooling medium through a second inlet pipeline (11), and the outlet of the second medium channel (7) is communicated with a second outlet pipeline (12).
2. The supercooled liquid oxygen production system according to claim 1, characterized in that the liquid oxygen transfer pipe (1) is provided with, on a stage preceding the first regulating valve (5): a liquid oxygen flowmeter (13).
3. The supercooled liquid oxygen production system according to claim 2, characterized in that the liquid oxygen transfer pipe (1) is provided with, on a stage preceding the first regulating valve (5): a thermometer and a manometer.
4. The supercooled liquid oxygen production system according to claim 1, characterized in that the liquid oxygen transfer pipe (1) is provided with, before the first regulating valve (5): -a first shut-off valve (14), said first inlet conduit (8) being in communication with the liquid oxygen delivery conduit (1) preceding said first shut-off valve (14).
5. Supercooled liquid oxygen production system according to claim 1, characterized in that the first inlet conduit (8) is provided with: a second regulating valve (10), a thermometer and a pressure gauge.
6. Supercooled liquid oxygen production system according to claim 1, characterized in that the first outlet conduit (9) is provided with: a second shut-off valve (15), a thermometer and a pressure gauge.
7. The supercooled liquid oxygen production system according to claim 1, characterized in that the liquid oxygen transfer pipe (1) is provided with, on a stage following the first regulating valve (5): a third shut-off valve (16), a pressure gauge and a thermometer.
8. The supercooled liquid oxygen production system according to any of claims 1 to 7, wherein the second medium passage (7) is a tank adapted to contain a liquid supercooled medium.
9. The supercooled liquid oxygen production system according to claim 8, wherein the second inlet pipe (11) is provided with: a liquid nitrogen flowmeter (17), a third regulating valve (18) and a fourth stop valve (19).
10. The supercooled liquid oxygen production system according to claim 8, wherein a nitrogen discharge valve (20) is installed on the second outlet pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320917861.0U CN219913697U (en) | 2023-04-21 | 2023-04-21 | Supercooled liquid oxygen preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320917861.0U CN219913697U (en) | 2023-04-21 | 2023-04-21 | Supercooled liquid oxygen preparation system |
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