High-vacuum heat-insulation simple low-temperature gas-liquid separation device
By designing a simple low-temperature gas-liquid separation device with high vacuum insulation, heat transfer is reduced by utilizing the vacuum chamber and insulation layer. Combined with gravity settling and support limiting ring structure, the problems of high heat leakage and complex structure of existing devices are solved, and efficient separation and insulation performance of low-temperature media are achieved.
Patent Information
- Application Number
- CN202422893738.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing cryogenic medium gas-liquid separation devices suffer from problems such as high heat leakage, large space occupation, complex structure, high cost, and low functional adaptability, and cannot meet the usage requirements of cryogenic medium transportation pipelines.
A simple low-temperature gas-liquid separation device with high vacuum insulation was designed, including an inner shell, an outer shell, an insulation support assembly, an inlet pipe, an outlet pipe, and an outlet pipe. The device reduces heat transfer through a vacuum chamber and an insulation layer, achieves gas-liquid separation by gravity settling, and optimizes media transport through a support limiting ring and a spray hole structure.
It achieves excellent thermal insulation performance and gas-liquid separation effect, reduces vaporization loss of cryogenic media, simplifies the structure, reduces costs, and is suitable for cryogenic media transportation in long-distance pipelines.
Smart Images
Figure CN223504994U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas-liquid separation technology, and more specifically, to a simple low-temperature gas-liquid separation device with high vacuum insulation. Background Technology
[0002] In pipeline transportation of cryogenic media (liquid nitrogen, liquid oxygen, etc.), due to unavoidable heat leakage from the pipeline, a certain amount of vaporization occurs, resulting in a gas-liquid two-phase flow within the pipeline. This is particularly pronounced in projects with long pipelines, where the two-phase state becomes more pronounced with increasing pipeline length. Furthermore, under certain specific operating conditions, the cryogenic media must maintain a certain level of liquid phase purity; therefore, gas-liquid separation devices are often added at specific locations within the pipeline.
[0003] Existing cryogenic medium gas-liquid separation devices either suffer from high heat leakage due to ordinary insulation methods, large size, and large installation space requirements; or have complex internal gas-liquid separation components that are suitable for specific high-precision working conditions but have low functional adaptability and high cost when used in cryogenic medium transportation pipelines; or the key operating parameters of the gas-liquid separation equipment cannot be functionally matched with the pipeline medium transportation system, thus failing to meet the usage requirements. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a simple low-temperature gas-liquid separation device with high vacuum insulation, which can effectively separate gas and liquid and has good heat insulation and cold preservation performance.
[0005] The solution adopted by this utility model to solve the technical problem is:
[0006] A simple low-temperature gas-liquid separation device with high vacuum insulation includes an inner shell for gas-liquid separation, an outer shell fitted outside the inner shell and forming a vacuum cavity between the outer shell and the inner shell, an insulation support assembly disposed in the vacuum cavity and used to support the inner shell, an outlet pipe with one end passing through the outer shell and the insulation support assembly and communicating with the bottom of the inner shell, an inlet pipe with one end passing through the outer shell and extending into the inner shell, and an outlet pipe with one end passing through the outer shell and communicating with the top of the inner shell.
[0007] In some possible implementations, the thermal insulation support assembly includes a support member located within the vacuum cavity for supporting the bottom of the inner shell, and two sets of support limiting rings fitted within the support member;
[0008] In some possible implementations, the two sets of support limiting rings include a limiting ring one with one end connected to the bottom of the inner shell and fitted inside the support member, and a limiting ring two coaxially arranged with the limiting ring and located on the side of the limiting ring one away from the inner shell.
[0009] The first limiting ring and the second limiting ring are close to each other to form a gap;
[0010] The end of the second limiting ring that is furthest from the first limiting ring is connected to the bottom of the outer shell.
[0011] In some possible implementations, an insulation layer is provided inside the vacuum cavity, and the insulation layer is fitted onto the outside of the inner shell.
[0012] In some possible implementations, the liquid inlet pipe is horizontally arranged and located between the air outlet pipe and the liquid outlet pipe, including a liquid inlet section located outside the outer shell and a spray section located inside the inner shell with one end passing through the outer shell and connected to the liquid inlet section.
[0013] In some possible implementations, the spray section is closed on the side away from the liquid inlet section, and multiple sets of spray holes are provided on the side of the spray section located inside the inner shell and near the bottom of the inner shell.
[0014] In some possible implementations, the total area of the spray holes is A, and the cross-sectional area of the flow channels provided in the spray section is B, where A ≥ B.
[0015] In some possible implementations, a vacuum tube one communicating with a vacuum chamber is fitted outside the gas outlet pipe, a vacuum tube two communicating with a vacuum chamber is fitted outside the liquid outlet pipe, and a vacuum tube three communicating with a vacuum chamber is fitted outside the liquid inlet pipe.
[0016] In some possible implementations, it also includes a safety component disposed on the outside of the housing and in communication with the inner housing, an vent control valve in communication with the vent pipe, and a level gauge disposed on the outside of the housing for measuring the level of the cryogenic medium inside the inner housing.
[0017] In some possible implementations, a support frame is also included at the bottom of the housing for supporting the housing.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] This invention can effectively achieve gas-liquid separation and has good thermal insulation performance;
[0020] This utility model can effectively support the inner shell while reducing heat transfer by setting up a support member; by setting two sets of support limiting rings in the support member, the vaporization loss of low temperature medium caused by high heat transfer is avoided. The support limiting rings are coaxially matched with the support member, which ensures the axial cold contraction displacement of the flue gas in the inner shell while limiting the impact of radial displacement on the overall structure.
[0021] This utility model sets the liquid inlet pipe in the middle of the outer shell, horizontally and extending into the inner shell. The low temperature medium is transported into the inner shell through the spray hole, and the liquid phase in the low temperature medium settles to the bottom of the gas-liquid separator by gravity, while the gas phase in the low temperature medium floats to the top of the gas-liquid separator.
[0022] This invention ensures that no throttling occurs during the transport of cryogenic media by setting the total area of the spray holes. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of this utility model;
[0024] Figure 2 This is a cross-sectional view of the present invention;
[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0026] Figure 4 This is a schematic diagram of the internal structure of this utility model;
[0027] The components are as follows: 1. Inner shell; 2. Outer shell; 3. Vacuum chamber; 4. Thermal insulation support assembly; 41. Support component; 42. Limiting ring one; 43. Limiting ring two; 5. Liquid outlet pipe; 51. Vacuum tube two; 6. Liquid inlet pipe; 61. Liquid inlet section; 62. Spray section; 621. Spray hole; 63. Vacuum tube three; 7. Gas outlet pipe; 71. Vacuum tube one; 8. Safety component; 9. Liquid level gauge; 10. Gas outlet control valve; 11. Support frame. Detailed Implementation
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] The present invention will now be described in detail.
[0030] like Figures 1-4 As shown:
[0031] A simple, high-vacuum, insulated, low-temperature gas-liquid separation device includes an inner shell 1 for gas-liquid separation, an outer shell 2 fitted outside the inner shell 1 and forming a vacuum cavity 3 between the outer shell 1 and the inner shell 1, an insulated support assembly 4 disposed within the vacuum cavity 3 for supporting the bottom of the inner shell 1, an outlet pipe 5 having one end passing through the outer shell 2 and the insulated support assembly 4 and communicating with the bottom of the inner shell 1, an inlet pipe 6 having one end passing through the outer shell 2 and extending into the inner shell 1, and an outlet pipe 7 having one end passing through the outer shell 2 and communicating with the top of the inner shell 1; the inlet pipe 6 is located between the outlet pipe 5 and the outlet pipe 7 and is horizontally arranged; the inner shell 1 and the outer shell 2 are coaxially arranged; a vacuum flange is provided at the output end of the outlet pipe 5.
[0032] The cryogenic medium enters the inner shell 1 through the liquid inlet pipe 6. Under the action of gravity, the liquid phase in the cryogenic medium will move downward to the bottom of the inner shell 1, and the gas phase in the cryogenic medium will float to the top of the inner shell 1. The liquid phase is transported to the downstream equipment through the liquid outlet pipe 5, and the gas phase is discharged or transported to the downstream equipment through the gas outlet pipe 7.
[0033] The vacuum cavity 3 formed between the inner shell 1 and the outer shell 2 effectively prevents heat from being lost from the inner shell 1 and the outer shell 2 to the outside, resulting in good insulation and thus significantly reducing the vaporization loss of the low-temperature medium.
[0034] Furthermore, vacuum chamber 3 is a chamber with a vacuum level of less than 0.1 Pa; such a high vacuum or ultra-high vacuum environment makes the insulation effect better and the vaporization loss further reduced.
[0035] The thermal insulation support component 4 provides support for the inner shell 1 on the one hand, and on the other hand, due to its good thermal insulation performance, it provides insulation while providing support, effectively reducing heat transfer through the support.
[0036] The thermal insulation support assembly 4 includes a support member 41 located inside the vacuum cavity 3 for supporting the bottom of the inner shell 1, and two sets of support limiting rings fitted inside the support member 41; the support member 41 has a ring-shaped cross-section; the support member 41, the support limiting rings, and the inner shell 1 are coaxially arranged.
[0037] The bottom of the thermal insulation support 41 is installed inside the outer shell 2 and supported by the bottom of the outer shell 2, while its top supports the bottom of the inner shell 1.
[0038] The two sets of support limiting rings include a limiting ring 42 with one end connected to the bottom of the inner shell 1 and fitted inside the support member 41, and a limiting ring 43 coaxially arranged with the limiting ring 42 and located on the side of the limiting ring 42 away from the inner shell 1.
[0039] The first limiting ring 42 and the second limiting ring 43 are close to each other on one side to form a gap;
[0040] The end of the second limiting ring 43 that is away from the first limiting ring 42 is connected to the bottom of the outer shell 2.
[0041] Specifically, the support component 41 is made of epoxy fiberglass material with low thermal conductivity; the support component 41, the first limiting ring 42, and the second limiting ring 43 are all cylindrical structures; the first limiting ring 42 and the second limiting ring 43 are fitted inside; one end of the liquid inlet pipe 6 is connected to the inside of the inner shell 1 in sequence with the first limiting ring 42 and the second limiting ring 43.
[0042] In this utility model, the limiting ring 42 and the limiting ring 43 are coaxial but close to each other on one side without direct contact. This avoids the loss of low-temperature medium vaporization caused by high heat transfer due to the high thermal conductivity of the limiting ring 42 and the limiting ring 43 made of metal materials. At the same time, the support member 41, the support limiting ring, and the inner shell 1 are coaxially matched, which ensures the cold shrinkage displacement of the inner shell 1 along its axial direction and limits the impact of the inner shell 1's radial displacement on the structure.
[0043] In some possible implementations, an insulation layer is provided inside the vacuum cavity 3, and the insulation layer is fitted onto the outside of the inner shell 1.
[0044] Specifically, the insulation layer has a cylindrical structure, which wraps the inner shell 1 inside, increasing the contact area for insulation and further improving the insulation effect.
[0045] Furthermore, the insulation layer can preferably be made of a low thermal conductivity and radiation-resistant insulation material wrapped around the inner tube.
[0046] In some possible implementations, the liquid inlet pipe 6 is horizontally arranged and located between the air outlet pipe 7 and the liquid outlet pipe 5, that is, the liquid inlet pipe 6 is located in the middle of the outer shell 2 along its axial direction; it includes a liquid inlet section 61 located outside the outer shell 2, a spray section 62 located inside the inner shell 1 and one end passing through the inner shell 1, the vacuum chamber 3, the outer shell 2 and the liquid inlet section 61 located outside the outer shell 2; the side of the spray section 62 away from the liquid inlet section 61 is a closed structure, and multiple sets of spray holes 621 are provided on the side of the spray section 62 located inside the inner shell 1 and near the bottom of the inner shell 1.
[0047] The cryogenic medium enters the spray section 62 through the liquid inlet section 61 and then flows out through the spray hole 621. Since the spray section 62 is located in the middle of the inner shell 1, that is, the distance between the axis of the spray section 62 and the top of the inner shell 1 is equal to the distance between the axis of the spray section 62 and the bottom of the inner shell 1, the liquid phase in the cryogenic medium settles to the bottom of the inner shell 1 under the action of gravity, while the gas phase floats to the top of the inner shell 1.
[0048] In some possible implementations, the total area of the spray holes 621 is A, and the cross-sectional area of the flow channel provided in the spray section 62 is B, where A≥B;
[0049] Specifically, the inner diameter of spray section 62 is D, and the cross-sectional area of the flow channel of spray section 62 is... The radius of the spray nozzle 621 is r, and the number of spray nozzles 621 is N. With the above settings, no throttling occurs when the effective cryogenic medium is transported in the inlet pipe 6.
[0050] In some possible implementations, to further enhance the insulation and cold preservation of the low-temperature medium, a vacuum tube 71 communicating with the vacuum chamber 3 is fitted on the outside of the gas outlet pipe 7, a vacuum tube 51 communicating with the vacuum chamber 3 is fitted on the outside of the liquid outlet pipe 5, and a vacuum tube 63 communicating with the vacuum chamber 3 is fitted on the outside of the liquid inlet pipe 6.
[0051] In some possible implementations, it also includes a safety component 8 disposed on the outside of the outer casing 2 and communicating with the inner casing 1, an exhaust control valve 10 communicating with the exhaust pipe 7, and a level gauge 9 disposed on the outside of the outer casing 2 for measuring the liquid level of the cryogenic medium inside the inner casing 1.
[0052] Specifically, the safety component 8 includes a pressure sensor that communicates with the inner shell 1 and is used to detect the pressure inside the inner shell 1, and a safety valve that is installed on the outer shell 2 and communicates with the inner shell 1; the safety valve can effectively act according to the monitored pressure change of the inner shell 1 to ensure safety when the inner shell 1 is in an overpressure state. When the inner shell 1 is in an overpressure state, the safety valve will open.
[0053] The probe of the pressure sensor passes through the outer shell 2 and the vacuum chamber 3 to enter the inner shell 1 to detect the pressure inside the inner shell 1; the safety valve is installed on the outer shell 2, and the pressure inside the inner shell 1 is adjusted by controlling the safety valve according to the pressure data;
[0054] The vent control valve 10 works in conjunction with the level gauge 9 to control the vent pipe 7 to release air according to the liquid level height parameter provided by the level gauge 9; the vent control valve 10 can be a pneumatic valve, an electric valve, or a self-operated mechanical valve.
[0055] The level gauge 9 can be a radar level gauge 9, a capacitive level gauge 9, a differential pressure level gauge 9, or other forms of level monitoring.
[0056] In some possible implementations, a support frame 11 is also included, which is disposed at the bottom of the housing 2 and is used to support the housing 2; the support frame 11 is made of angle steel, channel steel or steel plate materials spliced together.
[0057] Based on the theory of gravity settling, this invention has the advantages of not affecting the efficiency of pipeline medium transportation and having a lower cost compared to other complex large-scale enterprise separation devices while meeting basic operating requirements. It can be widely used in the transportation pipelines of electronics, medical, aerospace, and factories to meet the operating requirements of high-purity liquid-phase cryogenic media. This invention is applicable to cryogenic media such as liquid nitrogen, liquid oxygen, liquid argon, and liquid methane that have the feasibility of gravity settling.
[0058] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.
Claims
1. A simple, high-vacuum insulated, low-temperature gas-liquid separation device, characterized in that, It includes an inner shell for gas-liquid separation, an outer shell fitted outside the inner shell and forming a vacuum cavity between the outer shell and the inner shell, a heat-insulating support assembly disposed in the vacuum cavity and used to support the inner shell, a liquid outlet pipe with one end passing through the outer shell and the heat-insulating support assembly and communicating with the bottom of the inner shell, a liquid inlet pipe with one end passing through the outer shell and extending into the inner shell, and a gas outlet pipe with one end passing through the outer shell and communicating with the top of the inner shell.
2. The high-vacuum insulated simple low-temperature gas-liquid separation device according to claim 1, characterized in that, The thermal insulation support assembly includes a support member located inside the vacuum cavity for supporting the bottom of the inner shell, and two sets of support limiting rings fitted inside the support member; The cross-section of the support member is annular; the support member, the support limiting ring, and the inner shell are coaxially arranged.
3. The simple low-temperature gas-liquid separation device with high vacuum insulation according to claim 2, characterized in that, The two sets of support limiting rings include a limiting ring one with one end connected to the bottom of the inner shell and fitted inside the support member, and a limiting ring two coaxially arranged with the limiting ring and located on the side of the limiting ring one away from the inner shell. The first limiting ring and the second limiting ring are close to each other to form a gap; The end of the second limiting ring that is furthest from the first limiting ring is connected to the bottom of the outer shell.
4. The simple low-temperature gas-liquid separation device with high vacuum insulation according to claim 1, characterized in that, An insulation layer is provided inside the vacuum cavity, and the insulation layer is fitted onto the outside of the inner shell.
5. The high-vacuum insulated simple low-temperature gas-liquid separation device according to claim 1, characterized in that, The liquid inlet pipe is horizontally arranged and located between the air outlet pipe and the liquid outlet pipe, including a liquid inlet section located on the outside of the outer shell and a spray section located inside the inner shell with one end passing through the outer shell and connected to the liquid inlet section.
6. The simple low-temperature gas-liquid separation device with high vacuum insulation according to claim 5, characterized in that, The spray section is closed on the side away from the liquid inlet section, and multiple sets of spray holes are provided on the part of the spray section located inside the inner shell and on the side of this part near the bottom of the inner shell.
7. A simple low-temperature gas-liquid separation device with high vacuum insulation according to claim 6, characterized in that, The total area of the spray holes is A, and the cross-sectional area of the flow channels set in the spray section is B, where A≥B.
8. A simple low-temperature gas-liquid separation device with high vacuum insulation according to claim 1, characterized in that, A vacuum tube 1, which communicates with the vacuum chamber, is fitted outside the gas outlet pipe; a vacuum tube 2, which communicates with the vacuum chamber, is fitted outside the liquid outlet pipe; and a vacuum tube 3, which communicates with the vacuum chamber, is fitted outside the liquid inlet pipe.
9. A simple low-temperature gas-liquid separation device with high vacuum insulation according to claim 1, characterized in that, It also includes a safety component located on the outside of the housing and communicating with the inner housing, an exhaust control valve communicating with the exhaust pipe, and a level gauge located on the outside of the housing for measuring the level of the cryogenic medium inside the inner housing.
10. A simple low-temperature gas-liquid separation device with high vacuum insulation according to claim 1, characterized in that... It also includes a support frame located at the bottom of the housing for supporting the housing.