A liquid membrane formation device for a two-phase counter-current experiment

Abstract

The utility model discloses a liquid membrane formation device of two -phase countercurrent experiment, include: water injection subassembly and liquid membrane formation piece, be provided with liquid storage cavity and gas passage in water injection subassembly, liquid membrane formation piece sets up in liquid storage cavity, and a plurality of first through -hole that liquid membrane formation piece is provided with around gas passage and is connected liquid storage cavity and gas passage on, make the liquid in liquid storage cavity after through first through -hole form liquid membrane on the inner wall of gas passage. The liquid that enters liquid storage cavity can carry out primary even flow in liquid storage cavity, make liquid even distribution in the four around of gas passage, after liquid enters gas passage through a plurality of first through -hole that liquid membrane formation piece is provided with around gas passage, form liquid membrane on the inner wall of gas passage, make the liquid membrane thickness that forms on the inner wall of gas passage be more even, even liquid membrane mixes with the gas phase that enters gas passage, produce two -phase countercurrent's physical phenomenon, and then facilitate the experiment to carry out, improved the accuracy of experiment.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power experimental technology, and in particular to a liquid film forming device for two-phase countercurrent experiments. Background Technology

[0002] When a rupture occurs in the reactor's primary coolant loop, and the coolant level in the core falls below the heat pipe section, the steam generated in the core will flow along the heat pipe section into the steam generator. The steam will condense within the heat transfer tubes, and the resulting condensate will flow back to the core under gravity, entering the condensation recirculation phase. The condensate flows along the wall in the form of a liquid film, creating a countercurrent flow with the steam flowing in the rising section of the heat transfer tubes. Simulating the physical phenomena of this process through water and steam injection is crucial for obtaining important physical parameters of the two-phase countercurrent flow process. However, it is necessary to address the challenge of uniformly forming a liquid film suitable for high-temperature and high-pressure environments.

[0003] In existing technologies, methods for forming a uniform liquid film in small-sized pipes include: one is to use an overflow method, where the fluid flows down the pipe wall by gravity at the top of the pipe. This method requires a high degree of verticality at the top of the pipe and the flow rate overflowing into the pipe cannot be accurately measured. The other method is to open holes in the pipe wall, where the fluid gradually flows into the pipe through the overflow holes. This method requires a high degree of density of overflow holes, and the holes are prone to forming liquid columns, making it difficult to form a uniform liquid film. Utility Model Content

[0004] The technical problem to be solved by this invention is to provide a liquid film forming device for a two-phase countercurrent experiment.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a liquid film forming device for a two-phase countercurrent experiment, including: a water injection component and a liquid film forming component. The water injection component is provided with a liquid storage chamber and an air passage. The liquid film forming component is disposed in the liquid storage chamber. The liquid film forming component is provided with a plurality of first through holes around the air passage, which connect the liquid storage chamber and the air passage, so that the liquid in the liquid storage chamber forms a liquid film on the inner wall of the air passage after passing through the first through holes.

[0006] Furthermore, the liquid storage chamber is located above the liquid film forming member and is isolated from the air passage. Under the action of gravity, the liquid in the liquid storage chamber passes through the first through hole of the liquid film forming member to reach the air passage.

[0007] Furthermore, the water injection assembly is provided with at least one injection channel that communicates with the liquid storage chamber.

[0008] Furthermore, there are multiple injection channels, and the multiple injection channels are evenly distributed around the circumference of the water injection assembly.

[0009] Furthermore, the liquid film forming member has a stepped structure, comprising: a primary stepped portion and a secondary stepped portion, wherein the primary stepped portion is closer to the liquid storage cavity than the secondary stepped portion, and the inner diameter of the secondary stepped portion is the same as the inner diameter of the gas passage; the top end of the primary stepped portion is attached to the bottom end of the liquid storage cavity.

[0010] Furthermore, the first connector includes a connecting portion and a squeezing portion. The connecting portion is disposed on the water injection component, and the squeezing portion is disposed on the connecting portion, extending into the liquid storage cavity to abut the liquid film forming component against the second connector.

[0011] Furthermore, the extrusion section includes: an extrusion sleeve and an extension, the extrusion sleeve being disposed on the connecting section and in contact with the secondary stepped section; at least one of the extensions being disposed on the circumference of the extrusion sleeve and in contact with the primary stepped section.

[0012] Furthermore, the air passage includes: a second through hole disposed on the first connector and a third through hole disposed on the second connector, and a fourth through hole disposed on the secondary step portion; the second through hole, the fourth through hole and the third through hole are arranged vertically in sequence to form the air passage; And / or the water injection component is provided with a fifth through hole, the extrusion part extends into the fifth through hole, the first-stage step part is provided at the bottom end of the fifth through hole, and the connecting part, the outer wall of the extrusion part and the first-stage step part surround the liquid storage cavity in the fifth through hole to accommodate the air passage.

[0013] Furthermore, the liquid film forming element is a sponge metal or a sponge ceramic.

[0014] The following are the beneficial effects of implementing this utility model: This application utilizes a liquid film forming element disposed within a liquid storage chamber. The liquid film forming element has multiple first through holes surrounding a gas passage, connecting the liquid storage chamber and the gas passage. This allows liquid in the liquid storage chamber to form a liquid film on the inner wall of the gas passage after passing through the first through holes. The liquid entering the liquid storage chamber undergoes a first-stage uniform flow, ensuring even distribution around the gas passage. Subsequently, the liquid enters the gas passage through the multiple first through holes on the liquid film forming element. Under the influence of gravity, the liquid flows down the inner wall of the gas passage, forming a liquid film on its inner wall. This results in a more uniform liquid film thickness on the inner wall of the gas passage. The uniform liquid film mixes with the gas phase entering the gas passage, producing a two-phase counter-current physical phenomenon, which facilitates the experiment and improves its accuracy. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] In the attached image: Figure 1 This is a cross-sectional view of the liquid film forming apparatus for a two-phase countercurrent experiment in some embodiments of this utility model; Figure 2 This is a utility model Figure 1 A cross-sectional view along direction A. Figure 3 This is a front view of the air passage in some embodiments of this utility model; Figure 4 This is a schematic diagram of the installation position of the first connector in some embodiments of this utility model; Figure 5 This is a cross-sectional view of the first connecting member in some embodiments of this utility model; Figure 6 This is a cross-sectional view of the water injection component in some embodiments of this utility model.

[0017] Explanation of markings in the diagram Water injection assembly 1, water injection component 11, first connector 12, connecting part 121, extrusion part 122, extrusion sleeve 1221, extension part 1222, second connector 13, sealing gasket 14, liquid film forming component 2, first-level step part 21, second-level step part 22, liquid storage chamber 3, fifth through hole 31, air passage 4, second through hole 41, third through hole 42, fourth through hole 43, liquid injection channel 5. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0019] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0021] Please see Figures 1 to 3 The liquid film forming device for a two-phase countercurrent experiment in the first embodiment of this utility model includes: a water injection component 1 and a liquid film forming component 2. The water injection component 1 is provided with a liquid storage chamber 3 and an air passage 4. The liquid film forming component 2 is disposed in the liquid storage chamber 3. The liquid film forming component 2 is provided with a plurality of first through holes around the air passage 4, which connect the liquid storage chamber 3 and the air passage 4, so that the liquid in the liquid storage chamber 3 forms a liquid film on the inner wall of the air passage 4 after passing through the first through holes.

[0022] This application uses a liquid film forming element 2 disposed in a liquid storage cavity 3. The liquid film forming element 2 is provided with a plurality of first through holes around the air passage 4, which connect the liquid storage cavity 3 and the air passage 4, so that the liquid in the liquid storage cavity 3 forms a liquid film on the inner wall of the air passage 4 after passing through the first through holes. The water injection component 1 is vertically connected to the experimental pipeline, connecting the air passage 4 to the experimental pipeline. During the experiment, liquid is injected into the liquid storage chamber 3. The liquid entering the liquid storage chamber 3 undergoes primary flow equalization, ensuring uniform distribution around the air passage 4. The liquid then enters the air passage 4 through multiple first through-holes on the liquid film forming component 2 surrounding it. Under gravity, the liquid flows down the inner wall of the air passage 4, forming a liquid film. By arranging the liquid storage chamber 3 around the air passage 4, the liquid undergoes primary flow equalization, ensuring uniform distribution around the air passage 4. The subsequent entry through the multiple first through-holes further enhances the uniformity of the liquid film thickness on the inner wall of the air passage 4. This uniform liquid film mixes with the gas phase entering the air passage 4, creating a two-phase counter-current physical phenomenon, which facilitates the experiment and improves its accuracy.

[0023] Among them, multiple first through holes are provided on the liquid film forming component 2, and the multiple first through holes in the upper and lower layers can be staggered. By using the staggered arrangement, the gaps between the liquid films are filled, making the liquid film formed on the inner wall of the air passage 4 more uniform, further improving the efficiency and accuracy of the experiment, and facilitating the experiment.

[0024] Please see Figures 1 to 4 In some embodiments, the liquid storage chamber 3 is located above the liquid film forming member 2 and is isolated from the air passage 4. Under the action of gravity, the liquid in the liquid storage chamber 3 passes through the first through hole of the liquid film forming member 2 to reach the air passage 4.

[0025] This application utilizes a liquid storage chamber 3 located above the liquid film forming element 2 and isolated from the gas passage 4. Under the influence of gravity, the liquid in the storage chamber 3 flows through the first through-hole of the liquid film forming element 2 into the gas passage 4. By positioning the liquid storage chamber 3 above the liquid film forming element 2, the liquid in the storage chamber 3 enters the liquid film forming element 2 from one end of the first through-hole under its own weight, and then flows out from the other end of the first through-hole onto the inner wall of the gas passage 4, forming a liquid film on the inner wall of the gas passage 4. The entire process requires no power and relies entirely on natural laws, saving energy. The liquid's own weight can form a more uniform liquid film on the inner wall of the gas passage 4, improving the accuracy of the experiment. The overall structure of the liquid film forming device for the two-phase countercurrent experiment is simpler, less prone to damage, and has a longer service life.

[0026] Please see Figures 1 to 4 In some embodiments, the water injection assembly 1 is provided with at least one injection channel 5 that communicates with the liquid storage chamber 3.

[0027] This application provides at least one injection channel 5 on the water injection component 1 that is connected to the liquid storage chamber 3. Liquid can be continuously added to the liquid storage chamber 3 through the injection channel 5, so that the liquid storage chamber 3 maintains a good liquid volume, thereby extending the experimental time and obtaining more accurate experimental values. The continuous injection of liquid through the injection channel 5 makes the operation easier and reduces labor intensity.

[0028] Please see Figures 1 to 4 In some embodiments, there are multiple injection channels 5, and the multiple injection channels 5 are evenly distributed around the water injection assembly 1.

[0029] This application uses multiple injection channels 5 evenly distributed around the circumference of the water injection assembly 1. By evenly distributing multiple injection channels 5 that communicate with the liquid storage chamber 3 around the circumference of the water injection assembly 1, the efficiency of adding liquid to the liquid storage chamber 3 can be improved, thus increasing the efficiency of the experiment. The evenly distributed injection channels 5 allow the liquid to enter the liquid storage chamber 3 uniformly from all sides, reducing the influence of the injection channels 5 on the liquid flow rate of the first through hole below, and enabling the liquid to form a liquid film on the inner wall of the air passage 4 at a uniform speed, thereby improving the accuracy of the experiment.

[0030] Please see Figure 1 and Figure 3 In some embodiments, the liquid film forming member 2 has a stepped structure, including a first-level stepped portion 21 and a second-level stepped portion 22. The first-level stepped portion 21 is closer to the liquid storage cavity 3 than the second-level stepped portion 22. The inner diameter of the second-level stepped portion 22 is the same as the inner diameter of the air passage 4. The top end of the first-level stepped portion 21 is attached to the bottom end of the liquid storage cavity 3.

[0031] This application utilizes a stepped structure in the liquid film forming element 2, which includes a primary stepped portion 21 and a secondary stepped portion 22. The primary stepped portion 21 is closer to the liquid storage chamber 3 than the secondary stepped portion 22. The inner diameter of the secondary stepped portion 22 is the same as the inner diameter of the gas passage 4. The top end of the primary stepped portion 21 is attached to the bottom end of the liquid storage chamber 3. Using the stepped structure of the liquid film forming element 2, when liquid enters the liquid film forming element 2 through the first through-hole, the stepped junctions of the liquid film forming element 2 perform secondary uniform flow, allowing the liquid to flow out more evenly from the end of the first through-hole to form a liquid film. Because the inner diameter of the secondary stepped portion 22 is the same as the inner diameter of the gas passage 4, the liquid film formed on the secondary stepped portion 22 can smoothly transition to the inner wall of the gas passage 4, reducing interference with the formed liquid film and facilitating the formation of a liquid film on the inner wall of the gas passage 4. This maintains the stability of the formed liquid film and improves the accuracy of the experiment.

[0032] The top of the first-stage step 21 is attached to the bottom of the liquid storage chamber 3, which allows the liquid film forming component 2 to be connected more tightly to the water injection component 1, improving the sealing performance and thus improving the stability of the experimental process. It also reduces the gap between the liquid film forming component 2 and the liquid storage chamber 3, avoids liquid waste, and facilitates the formation of the liquid film.

[0033] In some embodiments, the inner diameter of the secondary step portion 22 can be smaller than the inner diameter of the air passage 4, so that the inner wall of the secondary step portion 22 extends into the air passage 4. However, after liquid passes through the first through hole of the primary step portion 21 and reaches the secondary step portion 22, the portion of the secondary step portion 22 extending into the air passage 4 is no longer blocked by the top of the side wall of the air passage 4. Under the action of gravity, the liquid will flow out from the edge of the secondary step portion 22 that contacts the air passage 4 through the first through hole. As a result, a thicker liquid film can be formed on the inner wall of the air passage 4 under the action of gravity, making it more versatile and applicable to more usage environments.

[0034] Please see Figures 1 to 5 In some embodiments, the water injection assembly 1 includes: a water injection component 11, a first connector 12 and a second connector 13. The first connector 12 is disposed at one end of the water injection component 11, and the second connector 13 is disposed at the other end of the water injection component 11. A sealing gasket 14 is provided between the first connector 12 and the second connector 13 and the water injection component 11.

[0035] This application uses a first connector 12 located at one end of the water injection component 11 and a second connector 13 located at the other end of the water injection component 11. Sealing gaskets 14 are provided between the first connector 12, the second connector 13, and the water injection component 11. A flange connects the first connector 12 and the second connector 13 to both ends of the water injection component 11. The water injection assembly 1 is connected to the experimental pipeline via the first connector 12 and the second connector 13, facilitating the installation of the liquid film forming component 2 in the liquid storage chamber 3. This reduces installation difficulty, simplifies operation, and improves installation efficiency. It also allows for timely replacement of damaged components such as the water injection component 11, the first connector 12, or the second connector 13, saving maintenance costs. This improves the portability of the liquid film forming device for two-phase countercurrent experiments, allowing for the use of different structural materials and thus expanding the applicable environment for the liquid film forming device in two-phase countercurrent experiments, enabling its use at different temperatures and pressures.

[0036] The sealing gaskets 14 provided between the first connector 12 and the second connector 13 and the water injection component 11 improve the sealing performance between the first connector 12 and the second connector 13 and the water injection component 11, prevent the liquid in the liquid storage chamber 3 from leaking out, save energy, protect the surrounding environment, and facilitate the experiment.

[0037] Please see Figures 1 to 5 In some embodiments, the first connector 12 includes a connecting portion 121 and a squeezing portion 122. The connecting portion 121 is disposed on the water injection component 11, and the squeezing portion 122 is disposed on the connecting portion 121, extending into the liquid storage cavity 3 to abut against the liquid film forming component 2 on the second connector 13.

[0038] This application uses a connecting part 121 mounted on the water injection component 11, and a squeezing part 122 mounted on the connecting part 121, extending into the liquid storage cavity 3 to abut against the second connecting part 13. The connecting part 121 facilitates the installation of the first connecting part 12 onto the water injection component 11, making assembly and disassembly easy. The squeezing part 122 abuts the liquid film forming component 2 against the second connecting part 13. When replacing the liquid film forming component 2, it can be removed from the fifth through hole 31 by disassembling either the first connecting part 12 or the second connecting part 13, thus simplifying the operation and improving replacement efficiency. The squeezing part 122, extending into the liquid storage cavity 3, squeezes the liquid film forming component 2 against the second connecting part 13, improving the firmness of the liquid film forming component 2 in the fifth through hole 31, enhancing the stability of the liquid storage cavity 3, and consequently improving experimental stability and facilitating data collection.

[0039] Please see Figures 1 to 5 In some embodiments, the extrusion part 122 includes an extrusion sleeve 1221 and an extension 1222. The extrusion sleeve 1221 is disposed on the connecting part 121 and contacts the secondary step part 22. At least one extension 1222 is disposed on the circumference of the extrusion sleeve 1221 and contacts the primary step part 21.

[0040] This application uses a compression sleeve 1221 disposed on the connecting portion 121, which contacts the secondary stepped portion 22. At least one extension 1222 is disposed on the circumference of the compression sleeve 1221, which contacts the primary stepped portion 21. By disposing the compression sleeve 1221 on the connecting portion 121 and contacting the secondary stepped portion 22, it cooperates with the second connecting member 13 to vertically limit the liquid film forming member 2. When the compression sleeve 1221 contacts the secondary stepped portion 22, the compression sleeve 1221 extends into the primary stepped portion 21, and the side wall of the compression sleeve 1221 is used to horizontally limit the liquid film forming member 2, further improving the firmness of the liquid film forming member 2 in the fifth through hole 31, thereby improving the stability of the liquid storage chamber 3 during operation.

[0041] In this process, at least one extension 1222 is provided on the circumference of the extrusion sleeve 1221 and contacts the first-stage step 21. The extension 1222 further applies vertical pressure to the first-stage step 21, making the liquid film forming member 2 more firmly set in the fifth through hole 31, and further improving the stability of the liquid storage chamber 3 during operation.

[0042] Multiple extensions 1222 can be evenly distributed circumferentially on the circumference of the extrusion sleeve 1221, making the pressure applied to the first-stage stepped portion 21 more uniform. Gaps need to be provided between the multiple extensions 1222 to allow liquid in the liquid storage chamber 3 to reach the air passage 4 from the first through hole of the liquid film forming member 2 and form a liquid film. Multiple liquid permeable holes can be provided on each of the multiple extensions 1222 to reduce the obstruction of the first through hole by the extensions 1222, enabling a more uniform liquid film to form on the air passage 4, facilitating the experiment and improving its accuracy.

[0043] Please see Figures 1 to 3 In some embodiments, the air passage 4 includes: a second through hole 41 disposed on the first connector and a third through hole 42 disposed on the second connector 13, and a fourth through hole 43 disposed on the secondary step portion 22. The second through hole 41, the fourth through hole 43 and the third through hole 42 are arranged vertically in sequence to form the air passage 4.

[0044] This application utilizes a second through hole 41 on the first connector, a third through hole 42 on the second connector 13, and a fourth through hole 43 on the secondary step 22. The second through hole 41, the fourth through hole 43, and the third through hole 42 are arranged vertically in sequence to form an air passage 4. The air passage 4 with the same upper and lower diameter is formed by the second through hole 41, the fourth through hole 43, and the third through hole 42. By disassembling the air passage 4, if the second through hole 41, the fourth through hole 43, or the third through hole 42 becomes blocked, it can be replaced and cleared in a timely manner, saving maintenance costs and facilitating disassembly and assembly. Through the air passage 4 with the same upper and lower diameter, the liquid film on the inner wall of the air passage 4 can better react with the gas passing through it to achieve a two-phase countercurrent phenomenon, thereby achieving better experimental results and facilitating the experiment.

[0045] Please see Figures 1 to 6 In some embodiments, the water injection component 11 is provided with a fifth through hole 31, the extrusion part 122 extends into the fifth through hole 31, the first-level step part 21 is provided at the bottom end of the fifth through hole 31, and the connecting part 121, the outer wall of the extrusion part 122, the first-level step part 21 and the inner wall of the fifth through hole 31 surround to form a liquid storage cavity 3 that accommodates the air passage 4.

[0046] This application sets the first-stage stepped portion 21 as the bottom of the liquid storage chamber 3, allowing all the liquid in the liquid storage chamber 3 to reach the air passage 4 through the first through hole, avoiding residual liquid in the liquid storage chamber 3, saving energy consumption. The liquid's own gravity also facilitates the formation of a liquid film on the inner wall of the air passage 4. The liquid storage chamber 3, which accommodates the air passage 4, is formed by the outer walls of the connecting portion 121 and the squeezing portion 122, the first-stage stepped portion 21, and the inner wall of the fifth through hole 31. If impurities enter the liquid storage chamber 3, it can be quickly disassembled by disassembling the connecting portion 121 and the squeezing portion 122, facilitating the discharge of impurities. This makes the operation more flexible and suitable for more application environments. The sealing gasket 14 between the first connecting member 12 and the water injection member 11 improves the sealing performance of the liquid storage chamber 3, reducing external interference, minimizing the impact on experimental data, and improving experimental accuracy.

[0047] Please see Figures 1 to 3 In some embodiments, the liquid film forming element 2 is a sponge metal or a sponge ceramic.

[0048] This application uses a sponge metal or sponge ceramic as the liquid film forming element 2. The sponge metal liquid film forming element 2 has higher overall strength and is less prone to damage. Through the multiple capillary pores on the sponge metal, a more uniform liquid film can be formed on the inner wall of the air passage 4, which facilitates the formation of the liquid film and improves the efficiency and accuracy of the experiment.

[0049] This application utilizes a sponge ceramic liquid film forming component 2. The ceramic liquid film forming component 2 is not easily corroded, has good stability, and can maintain the formation of a uniform liquid film for a long time. This saves on manufacturing costs, facilitates liquid film formation, and improves experimental efficiency and accuracy.

[0050] During the experiment, the water injection component 11 was connected to the experimental pipeline via the first connector 12 and the second connector 13, connecting the air passage 4 to the experimental pipeline. Then, liquid was injected into the liquid storage chamber 3 through the liquid injection channel 5. The incoming liquid underwent primary flow equalization through the liquid storage chamber 3, causing the liquid in the liquid storage chamber 3 to uniformly surround the outside of the air passage 4. Then, under its own gravity, the liquid in the liquid storage chamber 3 entered the liquid film forming component 2. By setting the liquid film forming component 2 into a stepped structure, the stepped structure of the liquid film forming component 2 was used to perform secondary flow equalization on the incoming liquid. As a result, after the liquid flows out of the liquid film forming component 2, a uniform liquid film can be formed on the inner wall of the air passage 4, allowing the liquid film in the air passage 4 to contact the gas in the air passage 4, simulating a two-phase countercurrent phenomenon, thus facilitating the experiment and improving its accuracy.

[0051] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A liquid film forming apparatus for a two-phase countercurrent experiment, characterized in that, include: The water injection assembly (1) and the liquid film forming element (2) are provided in the water injection assembly (1), which has a liquid storage chamber (3) and an air passage (4). The liquid film forming element (2) is disposed in the liquid storage cavity (3). The liquid film forming element (2) is provided with a plurality of first through holes around the air passage (4) to connect the liquid storage cavity (3) and the air passage (4), so that the liquid in the liquid storage cavity (3) forms a liquid film on the inner wall of the air passage (4) after passing through the first through holes.

2. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 1, characterized in that, The liquid storage chamber (3) is located above the liquid film forming member (2) and is isolated from the air passage (4). Under the action of gravity, the liquid in the liquid storage chamber (3) passes through the first through hole of the liquid film forming member (2) to reach the air passage (4).

3. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 1, characterized in that, The water injection component (1) is provided with at least one injection channel (5) that is connected to the liquid storage chamber (3).

4. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 3, characterized in that, There are multiple injection channels (5), and the multiple injection channels (5) are evenly distributed around the circumference of the water injection assembly (1).

5. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 1, characterized in that, The liquid film forming element (2) has a stepped structure. The liquid film forming element (2) includes a first-level stepped portion (21) and a second-level stepped portion (22). The first-level stepped portion (21) is closer to the liquid storage cavity (3) than the second-level stepped portion (22). The inner diameter of the second-level stepped portion (22) is the same as the inner diameter of the air passage (4). The top end of the first-level stepped portion (21) is attached to the bottom end of the liquid storage cavity (3).

6. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 5, characterized in that, The water injection assembly (1) includes: a water injection component (11), a first connector (12) and a second connector (13). The first connector (12) is disposed at one end of the water injection component (11), and the second connector (13) is disposed at the other end of the water injection component (11). A sealing gasket (14) is provided between the first connector (12) and the second connector (13) and the water injection component (11).

7. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 6, characterized in that, The first connector (12) includes a connecting part (121) and a squeezing part (122). The connecting part (121) is disposed on the water injection part (11), and the squeezing part (122) is disposed on the connecting part (121) and extends into the liquid storage cavity (3) to abut the liquid film forming part (2) against the second connector (13).

8. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 7, characterized in that, The extrusion section (122) includes an extrusion sleeve (1221) and an extension (1222). The extrusion sleeve (1221) is disposed on the connecting section (121) and contacts the secondary step section (22). At least one of the extension sections (1222) is disposed on the circumference of the extrusion sleeve (1221) and contacts the primary step section (21).

9. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 7, characterized in that, The air passage (4) includes: a second through hole (41) provided on the first connector and a third through hole (42) provided on the second connector (13), and a fourth through hole (43) provided on the secondary step (22); the second through hole (41), the fourth through hole (43) and the third through hole (42) are arranged vertically in sequence to form the air passage (4). And / or the water injection component (11) is provided with a fifth through hole (31), the extrusion part (122) extends into the fifth through hole (31), the first-level step part (21) is provided at the bottom end of the fifth through hole (31), and the connecting part (121), the outer wall of the extrusion part (122), the first-level step part (21) and the inner wall of the fifth through hole (31) surround to form the liquid storage cavity (3) that accommodates the air passage (4).

10. The liquid film forming apparatus for a two-phase countercurrent experiment according to claim 1, characterized in that, The liquid film forming element (2) is a sponge metal or a sponge ceramic.

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