Gas-liquid separation structure, gas-liquid separation device and gas-liquid separation system

Abstract

The present disclosure belongs to the technical field of liquid storage refrigeration, and particularly relates to a gas-liquid separation structure, a gas-liquid separation device and a gas-liquid separation system. The gas-liquid separation structure comprises a flow dividing member and a first partition member. The flow dividing member is provided with a gas passage hole. The first partition member is arranged at the lower end of the flow dividing member. A liquid phase channel is formed between the first partition member and the flow dividing member. When the gas-liquid mixed medium flows into the liquid phase channel, the liquid phase medium flows in the liquid phase channel, and the gas phase medium flows to the upper end of the flow dividing member through the gas passage hole, so as to separate the gas phase medium and the liquid phase medium. The present disclosure utilizes the structural characteristics of the flow dividing member and the first partition member and the density difference between the gas phase medium and the liquid phase medium to stabilize the internal pressure of the gas-liquid separation system and separate the gas-liquid mixed medium. Meanwhile, the separated liquid phase medium is recycled, the cold energy is fully utilized, the waste of cold energy is reduced, and the heat insulation performance of the gas-liquid separation system is improved.

Description

Technical Field

[0001] This disclosure belongs to the field of liquid storage and refrigeration technology, specifically relating to a gas-liquid separation structure, a gas-liquid separation device, and a gas-liquid separation system. Background Technology

[0002] Currently, some gas-liquid separation systems have an internal gas-liquid mixing medium container. This container stores a liquid medium that provides cooling energy to the gas-liquid separation system. When the temperature rises, the liquid medium transforms into a gaseous medium, which is then discharged through a corresponding gaseous pipeline. In existing technologies, the gaseous medium is discharged directly from the gas-liquid separation system using a direct discharge method. However, during transportation and other processes, the pressure inside the internal gas-liquid mixing medium container may fluctuate. This can lead to the liquid medium being discharged along with the gaseous medium, resulting in a waste of cooling energy and a reduction in the thermal insulation performance of the gas-liquid separation system. Summary of the Invention

[0003] The purpose of this application is to provide a gas-liquid separation structure, gas-liquid separation device, and gas-liquid separation system, which can achieve gas-liquid separation of the gas-liquid mixed medium in the gas-liquid separation system while maintaining the stability of the internal pressure of the gas-liquid separation system.

[0004] This disclosure provides a gas-liquid separation structure, including:

[0005] A flow divider, wherein the flow divider is provided with a vent hole; and

[0006] A first separator is disposed at the lower end of the flow divider, and a liquid phase channel is formed between the first separator and the flow divider. When the gas-liquid mixed medium flows into the liquid phase channel, the liquid phase medium flows in the liquid phase channel, and the gas phase medium flows to the upper end of the flow divider through the vent hole, so as to separate the gas phase medium and the liquid phase medium.

[0007] In an exemplary embodiment of this disclosure, the flow divider includes a flow divider plate, the first partition is plate-shaped and disposed below the flow divider plate, the flow divider further includes a first spacer plate, and a plurality of the first spacer plates are disposed between the lower surface of the flow divider plate and the upper surface of the first partition to separate and form a plurality of liquid phase channels.

[0008] In an exemplary embodiment of this disclosure, the gas-liquid separation structure includes a second separator, which is disposed at the upper end of the flow divider. A gas phase channel is formed between the second separator and the flow divider. Each gas phase channel is provided with at least one vent hole so that each gas phase channel and the liquid phase channel are connected through the vent hole.

[0009] In one exemplary embodiment of this disclosure, the flow divider further includes a second spacer, and a plurality of second spacers are disposed between the upper surface of the flow divider and the lower surface of the second spacer to separate and form a plurality of gas phase channels.

[0010] In an exemplary embodiment of this disclosure, the extension direction of the liquid phase channel is a first direction, the extension direction of the gas phase channel is a second direction, and the first direction and the second direction are set at an angle, defined as θ, then 0°<θ≤90°.

[0011] In one exemplary embodiment of this disclosure, the gas-liquid separation structure includes a pressure stabilizing element located at the inlet end of the liquid phase flow channel, through which the gas-liquid mixing medium flowing toward the liquid phase channel passes.

[0012] In one exemplary embodiment of this disclosure, the pressure stabilizer includes a plurality of baffles that divide the pressure stabilizer into a plurality of chambers arranged in a direction away from the diverter. The baffles are provided with through holes, through which a gas-liquid mixture enters from the inlet end of the pressure stabilizer and flows to different chambers. The through holes on adjacent baffles are staggered.

[0013] In one exemplary embodiment of this disclosure, the outlet end of the pressure stabilizer and the inlet end of the liquid phase channel are spaced apart, and the space is defined as D, which satisfies 1mm≤D≤5mm.

[0014] This disclosure provides a gas-liquid separation device, which includes a plurality of gas-liquid separation structures as described above, and the plurality of gas-liquid separation structures are stacked sequentially in the vertical direction.

[0015] This disclosure provides a gas-liquid separation system, which includes an internal gas-liquid mixing medium container, a gas-liquid working fluid pipeline, and any of the gas-liquid separation devices described above. One end of the gas-liquid working fluid pipeline is connected to the internal gas-liquid mixing medium container, and the other end is connected to the gas-liquid separation device. The gas-liquid working fluid pipeline is located at the lower end of the gas-liquid separation device.

[0016] The proposed solution has the following beneficial effects:

[0017] This disclosure discloses a gas-liquid separation structure, which includes a flow divider and a first partition located at the lower end of the flow divider. The first partition and the flow divider are connected to form a liquid phase channel. After the gas-liquid mixed medium enters the liquid phase channel, since the density of the gas phase medium is less than that of the liquid phase medium, the gas phase medium can rise to the upper end of the flow divider, while the liquid phase medium continues to flow in the liquid phase channel at the lower end of the flow divider, thereby realizing the gas-liquid separation of the gas-liquid mixed medium. At the same time, by recovering the separated liquid phase medium, the cold energy can be fully utilized, thereby reducing the waste of cold energy and improving the thermal insulation performance of the gas-liquid separation system. In addition, when the gas-liquid mixed medium passes through the flow divider, the flow divider can uniformly distribute the pressure and flow rate of the gas-liquid mixed medium, thereby stabilizing the internal pressure of the gas-liquid separation system.

[0018] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the gas-liquid separation device in the embodiments of this disclosure.

[0022] Figure 2 This is a cross-sectional view of the gas-liquid separation device in the second direction according to an embodiment of this disclosure.

[0023] Figure 3 This is a cross-sectional view of the gas-liquid separation device in the first direction according to an embodiment of this disclosure.

[0024] Figure 4 This is a three-dimensional structural diagram of the diversion component in an embodiment of this disclosure.

[0025] Figure 5 This is a schematic cross-sectional view of the diverter in the second direction in an embodiment of this disclosure.

[0026] Figure 6 This is a schematic cross-sectional view of the diverter in the first direction in an embodiment of this disclosure.

[0027] Figure 7This is a schematic diagram of the structure of the lower surface of the flow divider in an embodiment of this disclosure.

[0028] Figure 7a for Figure 7 A schematic diagram of the cross-sectional structure along the AA direction.

[0029] Figure 7b for Figure 7a A magnified view of the structure at point B.

[0030] Figure 8 This is a three-dimensional structural diagram of the air pressure stabilizer in an embodiment of this disclosure.

[0031] Figure 9 This is a top view of the air pressure stabilizer in an embodiment of this disclosure.

[0032] Figure 10 This is a cross-sectional structural diagram of the air pressure stabilizer in an embodiment of this disclosure.

[0033] Figure 11 This is a side view of the air pressure stabilizer in an embodiment of this disclosure.

[0034] Figure 12 This is a schematic diagram of the gas-liquid separation system in an embodiment of this disclosure.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Gas-liquid separation system; 11. Gas-liquid separation device; 111. Gas-liquid separation structure;

[0037] 1111, Flow divider; 1111a, Flow divider plate; 1111b, First partition plate; 1111c, Second partition plate; 1111d, Vent hole; 1112, First separator; 1113, Second separator; 1114, Pressure stabilizer; 1114a, Baffle; 1114b, Through hole; 1115, Liquid phase channel; 1116, Gas phase channel;

[0038] θ, included angle; D, interval; X, first direction; Y, second direction;

[0039] 2. Internal gas-liquid mixing medium container; 3. Gas-liquid working medium pipeline. Detailed Implementation

[0040] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0041] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0042] The present disclosure will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0043] like Figures 1 to 3 As shown, this disclosure provides a gas-liquid separation device 11, which includes a plurality of gas-liquid separation structures 111.

[0044] The gas-liquid separation structure 111 includes a flow divider 1111, a first separator 1112, and a second separator 1113. The first separator 1112 is disposed below the flow divider 1111 and forms a liquid phase channel 1115 with the flow divider 1111 for the flow of liquid phase medium. The second separator 1113 is disposed at the upper end of the flow divider 1111 and forms a gas phase channel 1116 with the flow divider 1111 for the flow of gas phase medium.

[0045] It should be noted that, Figures 1 to 3 The diagram in the middle shows the structure of the gas-liquid separator 11 placed upside down, so as to facilitate observation of the internal structure of the liquid phase channel 1115. In actual use, the gas phase channel 1116 in the gas-liquid separator 11 should be located above the liquid phase channel 1115.

[0046] like Figures 4 to 7 As shown, the flow divider 1111 includes a flow divider plate 1111a, a plurality of first partition plates 1111b, and a plurality of second partition plates 1111c. The first partition plates 1111b are disposed between the lower surface of the flow divider plate 1111a and the upper surface of the first partition plate 1112 to form a plurality of liquid phase channels 1115. The second partition plates 1111c are disposed between the upper surface of the flow divider plate 1111a and the lower surface of the second partition plate 1113 to form a plurality of gas phase channels 1116 (e.g., ...). Figure 7a , Figure 7b(As shown), but not limited to this, a flow divider 1111 may also have only one liquid phase channel 1115 and one gas phase channel 1116, depending on the actual situation. When a flow divider 1111 has multiple liquid phase channels 1115 and multiple gas phase channels 1116, the gas-liquid mixed medium is divided in the flow divider 1111, thereby uniformly distributing the pressure and flow rate of the gas-liquid mixed medium and stabilizing the internal pressure of the gas-liquid separation structure 111.

[0047] The flow divider plate 1111a has a vent hole 1111d. Each gas phase channel 1116 is provided with at least one vent hole 1111d. The vent hole 1111d penetrates the entire flow divider plate 1111a so that each gas phase channel 1116 and liquid phase channel 1115 are connected through the vent hole 1111d.

[0048] The diverter 1111 in this embodiment is generally formed by machining, but is not limited thereto, and can be determined according to the actual situation.

[0049] The gas-liquid mixture enters from the inlet end of the liquid phase channel 1115 and flows into different liquid phase channels. During the flow, since the density of the gas phase medium is less than that of the liquid phase medium, the gas phase medium rises to the upper end of the flow divider 1111 and enters the gas phase channel 1116 through the vent hole 1111d on the flow divider plate 1111a. Meanwhile, the liquid phase medium continues to flow in the liquid phase channel 1115 due to its own gravity. This achieves gas-liquid separation of the gas-liquid mixture medium, preventing the liquid phase medium from being discharged along with the gas phase medium, reducing the waste of cold energy, and thus improving the thermal insulation performance of the product. In addition, the flow divider 1111 can stabilize the internal pressure of the product by diverting the gas-liquid mixture medium.

[0050] The liquid phase channel 1115 extends in the first direction X, and the gas phase channel 1116 extends in the second direction Y. It should be noted that the gas-liquid mixed medium enters the flow divider 1111 from the inlet end of the liquid phase channel 1115. After the gas phase medium and the liquid phase medium are separated, they will flow to their respective outlet ends through the gas phase channel 1116 and the liquid phase channel 1115, respectively. In order to avoid the gas phase medium and the liquid phase medium mixing at the outlet end and forming a gas-liquid mixed medium again, the extension direction of the liquid phase channel 1115 should be different from the extension direction of the gas phase channel 1116.

[0051] In this embodiment of the present disclosure, the first direction X and the second direction Y are set at an angle θ, and satisfy 0°<θ≤90°. The value of θ can be 30°, 45°, 60°, 90°, etc. At this time, the outlet ends of the gas phase channel 1116 and the liquid phase channel 1115 are in different directions, thereby avoiding the possibility of the gas phase medium and the liquid phase medium mixing again.

[0052] For example, the angle θ between the first direction X and the second direction Y can be set to 90°, which can avoid the possibility of re-mixing between the separated gaseous and liquid media, and also simplify the design of the flow divider 1111.

[0053] like Figure 3 , Figures 8 to 11 As shown in this embodiment, the gas-liquid separation structure 111 further includes a pressure stabilizing element 1114. The pressure stabilizing element 1114 is located at the inlet end of the liquid phase flow channel, and the lower end of the pressure stabilizing element 1114 and the lower end of the flow divider 1111 are both connected to the first separator 1112. The pressure stabilizing element 1114 includes multiple baffles 1114a, which divide the pressure stabilizing element 1114 into multiple chambers. The chambers are arranged in a direction away from the flow divider 1111, that is, the chambers are arranged at least in the first direction X (e.g., Figure 9 As shown, each baffle 1114a is provided with a through hole 1114b. The gas-liquid mixture enters from the inlet end of the pressure stabilizer 1114 and flows to the adjacent chamber through the through hole 1114b. After the gas-liquid mixture passes through the pressure stabilizer 1114, the flow of the gas-liquid mixture is resisted by the baffle 1114a inside the pressure stabilizer 1114, which slows down the flow speed of the gas-liquid mixture, disperses the gas-liquid mixture and realizes staggered flow, thereby uniformly equalizing the pressure and flow rate of the gas-liquid mixture and stabilizing the internal pressure of the gas-liquid separation structure 111.

[0054] In addition, such as Figure 10 As shown, in this embodiment of the present disclosure, the through holes 1114b on adjacent baffles 1114a are staggered, which can further increase the flow resistance of the gas-liquid mixture and slow down the flow speed of the gas-liquid mixture. At the same time, the pressure stabilizer 1114 can evenly distribute the flow rate of the gas-liquid mixture and reduce pressure fluctuations, thereby stabilizing the internal pressure of the gas-liquid separation structure 111.

[0055] For example, the pressure stabilizer 1114 in this embodiment may be composed of straight-toothed fins, with each fin interconnected to form multiple chambers arranged in the first direction X. The fins are provided with through holes 1114b, and the through holes 1114b on adjacent fins are staggered, so that the pressure stabilizer 1114 presents a labyrinth structure. However, the pressure stabilizer 1114 in this disclosure is not limited to fins. Other pressure stabilizers 1114 that can stabilize the pressure of the gas-liquid mixture after it flows are included in the scope of this embodiment.

[0056] like Figure 3As shown in this embodiment, the outlet end of the pressure stabilizer 1114 and the inlet end of the liquid phase channel 1115 are spaced apart by a distance D. That is, the diverter 1111 and the pressure stabilizer 1114 are not connected. It should be noted that when the diverter 1111 and the pressure stabilizer 1114 are connected to the first separator 1112, the diverter 1111 is easily pressed against the pressure stabilizer 1114, resulting in an unstable connection between the diverter 1111 and the first separator 1112 and the second separator 1113, which in turn leads to a loss of stability in the gas-liquid mixture. In this embodiment, by leaving a gap D between the outlet end of the pressure stabilizer 1114 and the inlet end of the liquid phase channel 1115, the problem of unstable connection between the diverter 1111 and the first separator 1112 and the second separator 1113 can be avoided. At the same time, when the gas-liquid mixed medium flows out from the outlet end of the pressure stabilizer 1114, it first flows slowly through the gap D and then enters the diverter 1111, which can further stabilize the flow rate of the gas-liquid mixed medium, thereby stabilizing the internal pressure of the gas-liquid separation structure 111.

[0057] In addition, the gap D between the outlet end of the pressure stabilizer 1114 and the inlet end of the liquid phase channel 1115 satisfies 1mm≤D≤5mm. The value of the gap D can be 1mm, 2mm, 3mm, 4mm, 5mm, etc., which can be determined according to the actual situation.

[0058] It should be noted that the connection between the diverter 1111 and the pressure stabilizer 1114 and the first partition 1112 is by welding, but it is not limited to this. Other connection methods that can form a stable connection between the diverter 1111 and the pressure stabilizer 1114 and the first partition 1112 are included within the scope of this disclosure.

[0059] In this embodiment of the disclosure, the connection between the diverter 1111 and the pressure stabilizer 1114 and the first separator 1112 and the second separator 1113 can be by welding, adhesive bonding, or other methods, depending on the actual situation.

[0060] Taking brazing as an example in welding, when the interval D is less than 1 mm, the interval D is too short. When the diverter 1111 and the pressure stabilizer 1114 are connected to the first separator 1112 and the second separator 1113, the diverter 1111 risks pressing down on the pressure stabilizer 1114, which in turn leads to an unstable brazing. In addition, when the gas-liquid mixture just flows out of the outlet end of the pressure stabilizer 1114, the gas-liquid mixture is still in a state of pressure instability. Therefore, a sufficiently long interval D is needed to stabilize the pressure of the gas-liquid mixture entering the diverter 1111. At the same time, a sufficient interval D can also ensure that the diverter 1111 and the pressure stabilizer 1114 are connected. When connected to the first separator 1112 and the second separator 1113, the diverter 1111 will not press down on the pressure stabilizer 1114, thereby reducing the possibility of unstable connection of the diverter 1111 after brazing. When the interval D is greater than 5mm, the interval D is too long. When the excess liquid solder needs to be sucked out after brazing, due to the large amount of solder accumulated in the interval D, it cannot be completely sucked out. The excess solder that is not sucked out adheres to the first separator 1112 and the second separator 1113 for a long time, which may cause corrosion to the first separator 1112 and the second separator 1113, thereby causing damage to the first separator 1112 and the second separator 1113.

[0061] In this embodiment of the disclosure, the first partition 1112 and the second partition 1113 are plate-shaped structures, and their specific shapes can be rectangular, circular or other irregular shapes. However, it should be ensured that the first partition 1112 and the second partition 1113 can completely accommodate the diversion component 1111 and the air pressure stabilizing component 1114.

[0062] Furthermore, the thickness D1 of the first separator 1112 and the second separator 1113 is 0.1mm-0.8mm, specifically 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, etc. However, the thickness D1 should ensure that the first separator 1112 and the second separator 1113 are sufficient to support the flow divider 1111 and the pressure stabilizer 1114. At the same time, the thickness of the gas-liquid separation structure 111 can be adjusted by adjusting the thickness of the first separator 1112 and the second separator 1113, thereby achieving a thinner overall gas-liquid separation structure 111.

[0063] The diverter 1111, pressure stabilizer 1114, first separator 1112 and second separator 1113 in this embodiment can all be made of stainless steel, but are not limited thereto. Other materials that do not react with the gas-liquid mixture are also included in the scope of this embodiment.

[0064] It should be noted that the gas-liquid separation structures 111 in the gas-liquid separation device 11 are arranged in parallel in the vertical direction, and each gas-liquid separation structure 111 can independently realize the gas-liquid separation function, thereby reducing the space occupied by the gas-liquid separation device 11 in the planar space and realizing the miniaturization and design optimization of the gas-liquid separation device 11.

[0065] In one exemplary embodiment of this disclosure, when two adjacent gas-liquid separation structures 111 are placed opposite each other, the two adjacent gas-liquid separation structures 111 are separated by a separator.

[0066] For example, when the gas-liquid separation structure 111 has both a first separator 1112 and a second separator 1113, the first separator 1112 or the second separator 1113 that are arranged opposite each other in the two adjacent gas-liquid separation structures 111 can be removed before the two gas-liquid separation structures 111 are placed opposite each other. Thus, the two gas-liquid separation structures 111 in the adjacent arrangement are separated by a separator. While ensuring that each gas-liquid separation structure 111 can independently realize the gas-liquid separation function, the use of separator material can also be reduced, thereby reducing the manufacturing cost of the gas-liquid separation device 11 and reducing the overall space occupied by the gas-liquid separation device 11.

[0067] In addition, when the second separator 1113 is not provided in the gas-liquid separation structure 111, multiple gas-liquid separation structures 111 can be directly stacked in the vertical direction to form a gas-liquid separation device 11. At this time, two adjacent gas-liquid separation structures 111 are separated by a separator (i.e., the first separator 1112).

[0068] It should be noted that when the gas-liquid separation structure 111 forming the gas-liquid separation device 11 is not provided with a second partition 1113, after multiple gas-liquid separation structures 111 are stacked in the vertical direction, the gas-liquid separation structure 111 at the top of the gas-liquid separation device 11 cannot form a gas phase channel 1116. To avoid this situation, this application can provide a cover plate at the top of the gas-liquid separation device 11, and the cover plate is connected to the upper end of the flow divider 1111 at the top to form a gas phase channel 1116 for the gas phase medium to flow through, thereby ensuring that each gas-liquid separation structure 111 in the gas-liquid separation device 11 can independently realize the gas-liquid separation function, while improving the efficiency of gas-liquid separation.

[0069] In another exemplary embodiment of this disclosure, when two adjacent gas-liquid separation structures 111 are placed opposite each other, the two adjacent gas-liquid separation structures 111 are separated by two separators.

[0070] For example, when the gas-liquid separation structure 111 has both a first separator 1112 and a second separator 1113, the gas-liquid separation device 11 can be directly composed of multiple gas-liquid separation structures 111. That is, the gas-liquid separation device 11 is formed by stacking multiple gas-liquid separation structures 111 directly in the vertical direction. Two adjacent gas-liquid separation structures 111 are separated by the first separator 1112 and the second separator 1113. In this case, it is not necessary to remove the first separator 1112 or the second separator 1113 that are arranged opposite to each other in the two gas-liquid separation structures 111. The multiple gas-liquid separation structures 111 in the gas-liquid separation device 11 are still independent individuals after being stacked. Thus, the gas-liquid separation structures 111 can be flexibly assembled according to the actual situation to simplify the manufacturing process of the gas-liquid separation device 11.

[0071] This disclosure provides a gas-liquid separation system 1, including an internal gas-liquid mixing medium container 2, a gas-liquid working fluid pipeline 3, and any of the gas-liquid separation devices 11 described above. The internal gas-liquid mixing medium container 2 is used to contain the gas-liquid mixing medium. One end of the gas-liquid working fluid pipeline 3 is connected to the internal gas-liquid mixing medium container 2, and the other end is connected to the inlet end of each pressure stabilizing element 1114 in the gas-liquid separation device 11. The gas-liquid mixing medium enters the gas-liquid separation device 11 from the internal gas-liquid mixing medium container 2 through the gas-liquid working fluid pipeline 3, thereby realizing the gas-liquid separation of the gas-liquid mixing medium. The separated gas phase medium is discharged from the gas-liquid separation system 1 through the gas phase pipeline, while the outlet end of the liquid phase channel 1115 is connected to the gas-liquid working fluid pipeline 3. The separated liquid phase medium returns to the internal gas-liquid mixing medium container 2 through the gas-liquid working fluid pipeline 3, thereby improving the utilization of cold energy and enhancing the thermal insulation performance of the gas-liquid separation system 1.

[0072] In addition, this disclosure places the gas-liquid working medium pipeline 3 at the lower end of the gas-liquid separation device 11 to ensure that the separated liquid medium can flow into the gas-liquid working medium pipeline 3 under its own gravity and return to the internal gas-liquid mixing medium container 2, thereby realizing the recycling of the liquid medium, reducing the loss of cold energy, and improving the thermal insulation performance of the gas-liquid separation system 1.

[0073] It should be noted that the gas-liquid separation system 1 in the embodiments of this disclosure may belong to the nitrogen gas-liquid separation system in the liquid helium tank, but is not limited thereto. Other systems that need to perform gas-liquid separation or that need to achieve stable pressure of gas and liquid working fluids are included in the scope of this disclosure.

[0074] Taking the nitrogen-liquid separation system in a liquid helium tank as an example, such as Figure 12As shown, the gas-liquid separation device 11 and the internal gas-liquid mixing medium container 2 are placed at both ends in the interlayer of the liquid helium tank. The gas-liquid working medium pipeline 3 is located between the gas-liquid separation device 11 and the internal gas-liquid mixing medium container 2, and the gas-liquid working medium pipeline 3 is set on the cold screen. The two ends of the gas-liquid working medium pipeline 3 are respectively connected to the gas-liquid separation device 11 and the internal gas-liquid mixing medium container 2, and the gas-liquid working medium pipeline 3 is designed to be lower than the gas-liquid separation device 11.

[0075] It should be noted that the liquid nitrogen stored in the internal gas-liquid mixing medium container 2 is used to provide cooling energy for the liquid helium tank. The nitrogen gas that is heated and converted into a gaseous medium needs to be discharged from the internal gas-liquid mixing medium container. However, during the process of discharging the nitrogen gas, some liquid nitrogen may be discharged along with the nitrogen gas. This disclosure stabilizes the pressure and flow rate of the nitrogen fluid by setting up a gas-liquid separation device 11, and completes the gas-liquid separation according to the gravity of the liquid nitrogen itself, thereby stabilizing the internal pressure of the nitrogen gas-liquid separation system in the liquid helium tank, realizing the complete utilization of cooling energy, and enhancing the thermal insulation performance of the nitrogen gas-liquid separation system in the liquid helium tank.

[0076] Furthermore, the function of the gas-liquid separation device 11 varies depending on the liquid nitrogen content in the internal gas-liquid mixing medium container 2. Specifically, there are three possible scenarios:

[0077] In the first scenario, when the internal gas-liquid mixing medium container 2 is filled with liquid nitrogen, there is more liquid medium in the gas-liquid working medium pipeline 3. At this time, some liquid nitrogen will enter the gas-liquid separation device 11, resulting in the presence of gas-liquid mixing medium in the gas-liquid separation device 11. This leads to pressure instability in the gas-liquid separation system 1. In this embodiment, by setting up a gas-liquid separation device 11 connected to the gas-liquid working medium pipeline 3, the pressure and flow rate of the gas-liquid mixing medium can be initially stabilized when the gas-liquid mixing medium passes through the pressure stabilizing component 1114. When the gas-liquid mixing medium passes through the diverting component 1111, due to the different densities of nitrogen gas and liquid nitrogen, nitrogen gas rises to the gas phase channel 1116 and is discharged from the gas-liquid separation system 1, while liquid nitrogen returns to the internal gas-liquid mixing medium container 2 through the gas-liquid working medium pipeline 3. By arranging multiple independent gas-liquid separation structures in parallel in the vertical direction, each gas-liquid separation structure 111 can complete the above-mentioned gas-liquid separation process independently at the same time, thereby quickly achieving pressure stabilization, flow equalization, and gas-liquid separation of large flow rates of gas-liquid mixing medium.

[0078] In the second scenario, when liquid nitrogen occupies half the volume of the internal gas-liquid mixing medium container 2, the volumes of liquid nitrogen and nitrogen gas in the gas-liquid working medium pipeline 3 are roughly equal. At this time, a very small amount of liquid nitrogen also enters the gas-liquid separation device 11, which in turn leads to unstable pressure in the gas-liquid separation system 1. In this embodiment, by setting up a gas-liquid separation device 11 connected to the gas-liquid working medium pipeline 3, the pressure and flow rate of the gas-liquid mixing medium can be initially stabilized when the gas-liquid mixing medium passes through the pressure stabilizing component 1114. In addition to the pressure stabilizing component 1114, the flow divider 1111 in this disclosure also increases the flow resistance of the gas-liquid mixing medium, thereby further stabilizing the pressure of the gas-liquid mixing medium and enabling a small amount of nitrogen gas to be separated from liquid nitrogen in the flow divider 1111. Thus, pressure stabilization and liquid nitrogen recovery can be achieved in the gas-liquid separation system 1 in a small volume.

[0079] In the third scenario, when liquid nitrogen occupies 1 / 3 of the volume of the internal gas-liquid mixing medium container 2, there is more nitrogen in the gas-liquid working medium pipeline 3. At this time, no liquid nitrogen enters the gas-liquid separation device 11. The gas-liquid separation device 11 mainly plays the role of stabilizing the internal pressure of the gas-liquid separation system 1. Specifically, the gas pressure stabilizing component 1114 and the flow diverting component 1111 themselves can increase the flow resistance of the gas-liquid mixing medium, thereby achieving the purpose of stabilizing the internal pressure of the gas-liquid separation system 1. The first separator 1112 and the second separator 1113 separate each gas-liquid separation structure 111, so that each gas-liquid separation structure 111 can complete the above-mentioned gas-liquid separation process at the same time, thereby reducing the flow rate of the gas-liquid mixing medium in each group of gas-liquid separation structures 111, and better achieving the pressure stabilization effect of the gas-liquid mixing medium.

[0080] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0081] It should be noted that terms such as "upper," "lower," "left," and "right" are used only for distinction and convenience of description, and do not impose any positional limitations on the embodiments of the present invention. For example, "upper" in practice can refer to "lower," "left," or "right." In this disclosure, unless otherwise explicitly specified and limited, terms such as "assembly" and "connection" 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 mechanical connection or an electrical connection; 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. For those skilled in the art, the specific meaning of the above terms in this disclosure can be understood according to the specific circumstances.

[0082] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Therefore, any changes or modifications made in accordance with the claims and description of the present disclosure should fall within the scope of the patent coverage of the present disclosure.

Claims

1. A gas-liquid separation structure, characterized in that, include: The flow divider is provided with a vent hole; A first separator is disposed at the lower end of the flow divider, and a liquid phase channel is formed between the first separator and the flow divider. When the gas-liquid mixed medium flows into the liquid phase channel, the liquid phase medium flows in the liquid phase channel, and the gas phase medium flows to the upper end of the flow divider through the vent hole, so as to separate the gas phase medium and the liquid phase medium. The second partition is disposed at the upper end of the flow divider, and a gas phase channel is formed between the second partition and the flow divider. Each gas phase channel is provided with at least one vent hole so that each gas phase channel and the liquid phase channel are connected through the vent hole. and Air pressure stabilizers; The flow divider includes a flow divider plate and a second partition plate. The first partition plate is plate-shaped and located below the flow divider plate. The flow divider also includes multiple first partition plates, which are disposed between the lower surface of the flow divider plate and the upper surface of the first partition plate to form multiple liquid phase channels. Multiple second partition plates are also disposed between the upper surface of the flow divider plate and the lower surface of the second partition plate to form multiple gas phase channels. The liquid phase channels extend in a first direction, and the gas phase channels extend in a second direction, forming an angle between the first and second directions. A pressure stabilizer is located at the inlet end of the liquid phase channel, and the gas-liquid mixture flowing into the liquid phase channel passes through the pressure stabilizer. The outlet end of the pressure stabilizer is spaced apart from the inlet end of the liquid phase channel.

2. The gas-liquid separation structure according to claim 1, characterized in that, If the included angle is defined as θ, then 0° < θ ≤ 90° is satisfied.

3. The gas-liquid separation structure according to claim 1, characterized in that, The pressure stabilizing component includes multiple baffles that divide the pressure stabilizing component into multiple chambers. The chambers are arranged in a direction away from the diverter. The baffles are provided with through holes. The gas-liquid mixing medium enters from the inlet end of the pressure stabilizing component and flows to different chambers through the through holes. The through holes on adjacent baffles are staggered.

4. The gas-liquid separation structure according to claim 1, characterized in that, If the interval is defined as D, then 1mm ≤ D ≤ 5mm is satisfied.

5. A gas-liquid separation device, characterized in that, The gas-liquid separation device includes a plurality of gas-liquid separation structures as described in any one of claims 1 to 4, and the plurality of gas-liquid separation structures are stacked sequentially in the vertical direction.

6. A gas-liquid separation system, characterized in that, The gas-liquid separation system includes an internal gas-liquid mixing medium container, a gas-liquid working medium pipeline, and a gas-liquid separation device as described in claim 5. One end of the gas-liquid working medium pipeline is connected to the internal gas-liquid mixing medium container, and the other end is connected to the gas-liquid separation device. The gas-liquid working medium pipeline is located at the lower end of the gas-liquid separation device.

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