A system for regulating the interface height of a multiphase liquid

Abstract

The utility model relates to a kind of multi-phase liquid interface layered height's adjusting system, layered jar is connected with liquid inlet component, liquid inlet component is connected with liquid seal component by ring loose sleeve flange, liquid seal component is connected with exhaust component, exhaust component is connected with layered jar, liquid seal component is connected with liquid discharge component by ring loose sleeve flange, liquid discharge component is connected with material receiving jar;Liquid seal component is in the shape of several Chinese characters, including first rotating pipeline and second rotating pipeline, first rotating pipeline and second rotating pipeline are connected with liquid inlet pipeline and liquid discharge pipeline by ring loose sleeve flange;Exhaust component includes tee, hose and exhaust pipeline, the inlet end and the outlet end of tee are connected with first rotating pipeline and second rotating pipeline by ring loose sleeve flange, hose is arranged between branch mouth end and exhaust pipeline, exhaust pipeline is connected with layered jar.Compared with prior art, the utility model can very conveniently realize the regulation of liquid seal height, and any fire operation is not needed in the whole regulation process, safe and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of chemical production equipment technology, and relates to a system for adjusting the layering height of multiphase liquid interfaces. Background Technology

[0002] In chemical production processes, during liquid-liquid extraction or further separation of multiple distillates, due to the density differences between liquids, after standing in a separator for a certain period of time, multiple liquids will gradually separate into several liquid phases, with clear or blurred interfaces gradually appearing between them. The height of each interface can be detected by a sight glass on the side of the container or an interface gauge on the top end. Then, a liquid-sealed separation method is used to collect the various liquid materials separately, which can be used as intermediate products in the next process or reused as solvents.

[0003] Currently, most chemical companies separate multiphase materials by installing liquid seals on the discharge pipes below the aforementioned separators. The liquid seal assembly is made of welded stainless steel or carbon steel pipes, and its height is set to a fixed value according to the process package requirements. However, due to differences in raw materials or parameters such as separation process temperature, the volumes of the various liquid phases to be separated are often different, requiring adjustments to the fixed height of the liquid seal during production. Since material has already entered the production system, it is necessary to drain the material from the liquid seal, cut and weld the pipes, and lower or raise the height of the liquid seal. This involves hot work, requiring multiple levels of approval, which is time-consuming and costly.

[0004] Patent CN222468161U discloses a stratification tank with a stirring system, including a suspension tank, a stratification tank, and a feed pipe. The suspension tank is located below and connected to the stratification tank. After stratification, the liquid will form a heavy-light phase interface in the stratification tank. The stratification tank also includes a vent pipe set at the top of the stratification tank; a light phase output pipe set horizontally above the heavy-light phase interface in the stratification tank; a heavy phase output pipe in the shape of an inverted U and set below the heavy-light phase interface in the stratification tank, with the inlet end of the heavy phase output pipe connected to the stratification tank and the outlet end of the heavy phase output pipe higher than the inlet end; and the inlet end of the heavy phase liquid level siphon balance pipe connected to the top of the stratification tank and the outlet end of the heavy phase liquid level siphon balance pipe connected to the heavy phase output pipe. However, this patent involves the continuous separation of two-phase liquids containing a suspension for a specific material. Once the outlet height of the light and heavy phases is determined, there are requirements for setting the height of the interface between the two phases. It can only be within the range of the outlet heights of the light and heavy phases. Once production fluctuates, such as changing the concentration of the suspension, if the two phases are to be fully separated, the separation residence time and interface height of the mixture in the separation tank should be adjusted accordingly. However, the separation tank itself cannot adjust the height of the outlet pipes of the two phases, so the separation of the two phases is not sufficient. That is, the heavy phase may contain more light phase or the light phase may contain more heavy phase, failing to achieve the final purpose of separation of the two phases. Utility Model Content

[0005] The purpose of this invention is to overcome at least one of the defects of the prior art and provide a system for adjusting the layering height of a multiphase liquid interface. This invention can easily adjust the liquid seal height, and the entire adjustment process does not require any hot work, making it safe and reliable.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] One of the technical solutions of this utility model is to provide a system for adjusting the layering height of a multiphase liquid interface. The system includes a liquid inlet assembly, a liquid seal assembly, a liquid discharge assembly, and a venting assembly. The liquid discharge pipe at the bottom of the layering tank is connected to the inlet end of the liquid inlet assembly. The outlet end of the liquid inlet assembly is connected to the front inlet end of the liquid seal assembly through a loose-fitting ring flange. The middle outlet end of the liquid seal assembly is connected to the inlet end of the venting assembly. The outlet end of the venting assembly is connected to the gas inlet pipe at the top of the layering tank. The rear outlet end of the liquid seal assembly is connected to the inlet end of the liquid discharge assembly through a loose-fitting ring flange. The outlet end of the liquid discharge assembly is connected to the liquid inlet pipe of the material receiving tank.

[0008] The liquid seal assembly is shaped like a zigzag, including a first rotating pipe at the front and a second rotating pipe at the rear. The inlet end of the first rotating pipe and the outlet end of the second rotating pipe are connected to the inlet pipe of the liquid inlet assembly and the drain pipe of the liquid outlet assembly through a set of ring loose flanges.

[0009] The exhaust assembly includes a tee, a hose, and an exhaust pipe. The inlet and outlet ends of the tee are connected to the outlet end of the first rotating pipe and the inlet end of the second rotating pipe via a set of ring loose flanges. A hose is provided between the branch end and the inlet end of the exhaust pipe. The outlet end of the exhaust pipe is connected to the gas feed pipe at the top of the stratified tank.

[0010] Furthermore, the liquid inlet assembly includes a liquid inlet pipe, on which a valve is provided;

[0011] The drainage assembly includes a drainage pipe with a valve installed on it.

[0012] Furthermore, the liquid inlet assembly includes a first fixed pipe, on which a first pneumatic shut-off valve is provided, and on the first fixed pipe, before the first pneumatic shut-off valve and near the liquid outlet pipe at the bottom of the stratification tank, a first manual ball valve for misoperation protection is provided.

[0013] The drainage assembly includes a second fixed pipe, on which a fifth pneumatic shut-off valve is installed. A second manual ball valve with misoperation protection is installed on the second fixed pipe after the fifth pneumatic shut-off valve and near the liquid inlet pipe of the material receiving tank.

[0014] Furthermore, the inlet end of the first rotating pipe is connected to the first fixed pipe via a first ring loose flange, and the outlet end of the second rotating pipe is connected to the second fixed pipe via a sixth ring loose flange.

[0015] The exhaust assembly includes a fixed tee, a metal flexible hose, and an exhaust pipe. The inlet end of the fixed tee is connected to the outlet end of the first rotating pipe through a second loose flange, and the outlet end is connected to the inlet end of the second rotating pipe through a third loose flange. A metal flexible hose is provided between the branch end and the inlet end of the exhaust pipe.

[0016] Furthermore, a drain pipe is connected to the drain pipe before the valve, and the drain pipe is equipped with a valve;

[0017] The system also includes a purging assembly, which includes a purging pipe. The purging pipe is connected to the inlet pipe after a valve, and the purging pipe is equipped with a valve.

[0018] Furthermore, a drain pipe is connected to the second fixed pipe before the fifth pneumatic shut-off valve, and a fourth pneumatic shut-off valve is installed on the drain pipe.

[0019] The system also includes a nitrogen purging assembly, which includes a purging pipe. The first fixed pipe is connected to the purging pipe after the first pneumatic shut-off valve. From the nitrogen inlet to the connection point with the first fixed pipe, the purging pipe is sequentially equipped with a manual gate valve for misoperation protection, a second pneumatic shut-off valve, and a check valve.

[0020] Furthermore, a connecting component is provided between the front inlet end and the rear outlet end of the liquid seal assembly. The connecting component includes a connecting pipe. The inlet end of the first rotating pipe and the outlet end of the second rotating pipe are connected to the connecting pipe through a set of ring loose flanges. The outlet end of the liquid inlet assembly and the inlet end of the liquid outlet assembly are directly connected through the connecting pipe.

[0021] Furthermore, the inlet end of the first rotating pipe is connected to the connecting pipe via a fourth loose flange, and the outlet end of the second rotating pipe is connected to the connecting pipe via a fifth loose flange.

[0022] Furthermore, a valve is installed on the connecting pipe;

[0023] A valve is installed between the branch end of the tee and the inlet end of the hose.

[0024] Furthermore, a third pneumatic shut-off valve is installed on the connecting pipe;

[0025] A sixth pneumatic shut-off valve is provided between the branch end of the fixed tee and the inlet end of the metal hose, and a third manual ball valve for misoperation protection is provided on the exhaust pipe near the gas feed pipe at the top of the stratification tank.

[0026] As a preferred technical solution, the ring loose flange includes a pair of ring loose flange plates, a gasket is provided between the pair of ring loose flange plates, and they are fastened by bolts.

[0027] As a preferred technical solution, the valve is connected to the PLC assembly.

[0028] As a preferred technical solution, the first pneumatic shut-off valve, the second pneumatic shut-off valve, the third pneumatic shut-off valve, the fourth pneumatic shut-off valve, the fifth pneumatic shut-off valve and the sixth pneumatic shut-off valve are connected to the PLC assembly.

[0029] One of the technical solutions of this utility model is to provide a method for adjusting the layering height of a multiphase liquid interface. This method uses the aforementioned system to adjust the layering height of the multiphase liquid interface, and includes the following steps:

[0030] After the stratification tank finishes normal material distribution, the PLC component shuts off the system feed and opens the system discharge and purging. After the material is discharged and purging is completed, the loose flange is manually disassembled, the Z-shaped liquid seal assembly is rotated to the required angle, and then the corresponding loose flange is tightened to complete the liquid seal height adjustment. At this time, the hose deforms to ensure the connection between the liquid seal assembly and the gas phase of the stratification tank. After the airtightness check is qualified, it can be put into normal production.

[0031] As a preferred technical solution, after the normal material distribution in the stratification tank is completed, the pneumatic valve is connected to the PLC component. The PLC component is set to perform delayed sequential control operation according to the order of closing the system feed, opening the system discharge, and opening the system purging. First, the residual liquid in the system is drained in the order of closing the first pneumatic shut-off valve, opening the third pneumatic shut-off valve, and opening the sixth pneumatic shut-off valve. After a certain period of time, the sixth pneumatic shut-off valve is closed, the second pneumatic shut-off valve is opened, and the liquid seal assembly is purged with nitrogen. After a certain period of time, the fourth pneumatic shut-off valve is opened, the fifth pneumatic shut-off valve is closed, the second pneumatic shut-off valve is closed, and the fourth pneumatic shut-off valve is closed after a certain period of time. After the material is drained and purged, the first, second, third, fourth, fifth, and sixth loose flanges are manually disassembled. The Z-shaped liquid seal assembly is rotated to the required angle, and then the corresponding loose flange is tightened to complete the adjustment of the liquid seal height. At this time, the hose is deformed to ensure the connection between the liquid seal assembly and the gas phase of the stratification tank. After the airtightness check is qualified, it can be put into normal production and use.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) This utility model can clean the residual material after draining the liquid seal assembly. Without modifying any of the pipes in the existing liquid seal assembly, the height of the liquid seal can be manually adjusted by human intervention. That is, it is not necessary to adjust the height of the liquid seal by hot work because the volume of the liquid phase to be separated is different. It is only necessary to rotate the Z-shaped liquid seal assembly to the required angle to adjust the height of the liquid seal. With the help of a hose, the liquid seal assembly can be connected to the gas phase of the stratification tank. It can conveniently and efficiently achieve the separation of multiphase liquids, which is very practical.

[0034] (2) The multiphase liquid interface layering height system of this utility model can be applied to any other liquid seal system, such as liquid seals that need to ensure the liquid height in the condenser;

[0035] (3) This utility model realizes the adjustment of the layering height of the multiphase liquid interface, reduces the approval and construction caused by the need to adjust the liquid seal height in the production system, and the whole process does not require hot work. It not only saves hot work approval time and maintenance costs, but also reduces the danger of hot work operation. The entire adjustment system is simple to configure, convenient to adjust and practical.

[0036] (4) The key rotating components in this utility model are all connected by ring loose flanges. Once the ordinary welded flange is welded, the minimum rotation angle of the key components can only be the angle between the two bolt holes. However, the ring loose flange does not affect the sealing performance and can achieve rotation at any angle, thereby realizing the adjustment of the height of any interface within the height of the letter, which is ingenious and practical. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the system for adjusting the layering height of the multiphase liquid interface in an embodiment of this utility model.

[0038] Explanation of markings in the diagram:

[0039] 1—First manual ball valve, 2—First pneumatic shut-off valve, 3—Manual gate valve, 4—Second pneumatic shut-off valve, 5—Check valve, 6—First fixed pipeline, 7—First loose flange ring, 8—First rotating pipeline, 9—Second loose flange ring, 10—Fixed tee, 11—Third loose flange ring, 12—Second rotating pipeline, 13—Fourth loose flange ring, 14—Third pneumatic shut-off valve, 15—Fifth loose flange ring, 16—Sixth loose flange ring, 17—Second fixed pipeline, 18—Fourth pneumatic shut-off valve, 19—Fifth pneumatic shut-off valve, 20—Second manual ball valve, 21—Sixth pneumatic shut-off valve, 22—Hose, 23—Third manual ball valve, 24—PLC assembly. Detailed Implementation

[0040] The present invention will now be described in detail with reference to specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., used to describe a common object only indicate different instances of the same object, and are not intended to imply that the objects described in this way must be in a given order, whether temporally, spatially, sequentially, or in any other way.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] Example 1:

[0044] A system for adjusting the stratification height at the interface of a multiphase liquid, such as Figure 1 As shown, the system includes a liquid inlet assembly, a liquid seal assembly, a liquid drain assembly, and a venting assembly. The liquid discharge pipe at the bottom of the stratified tank is connected to the inlet end of the liquid inlet assembly. The outlet end of the liquid inlet assembly is connected to the front inlet end of the liquid seal assembly via a loose-fitting ring flange. The middle outlet end of the liquid seal assembly is connected to the inlet end of the venting assembly. The outlet end of the venting assembly is connected to the gas inlet pipe at the top of the stratified tank. The rear outlet end of the liquid seal assembly is connected to the inlet end of the liquid drain assembly via a loose-fitting ring flange. The outlet end of the liquid drain assembly is connected to the liquid inlet pipe of the material receiving tank.

[0045] The liquid inlet assembly includes a liquid inlet pipe, and a valve is installed on the liquid inlet pipe;

[0046] In this embodiment, the liquid inlet assembly includes a first fixed pipe 6, a first pneumatic shut-off valve 2 is provided on the first fixed pipe 6, and a first manual ball valve 1 for misoperation protection is provided on the first fixed pipe 6 before the first pneumatic shut-off valve 2 and near the liquid outlet pipe at the bottom of the stratification tank.

[0047] The liquid seal assembly is shaped like a zigzag, including a first rotating pipe 8 at the front and a second rotating pipe 12 at the rear. The inlet end of the first rotating pipe 8 and the outlet end of the second rotating pipe 12 are connected to the inlet pipe of the liquid inlet assembly and the drain pipe of the liquid outlet assembly through a set of ring loose flanges.

[0048] In this embodiment, the inlet end of the first rotating pipe 8 is connected to the first fixed pipe 6 through the first ring loose flange 7, and the outlet end of the second rotating pipe 12 is connected to the second fixed pipe 17 through the sixth ring loose flange 16.

[0049] The exhaust assembly includes a tee, a hose 22, and an exhaust pipe. The inlet and outlet ends of the tee are connected to the outlet end of the first rotating pipe 8 and the inlet end of the second rotating pipe 12 via a set of ring loose flanges. A hose 22 is provided between the branch end and the inlet end of the exhaust pipe. The outlet end of the exhaust pipe is connected to the gas feed pipe at the top of the stratified tank.

[0050] In this embodiment, the exhaust assembly includes a fixed tee 10, a metal hose 22, and an exhaust pipe. The inlet end of the fixed tee 10 is connected to the outlet end of the first rotating pipe 8 through a second loose flange 9, and the outlet end is connected to the inlet end of the second rotating pipe 12 through a third loose flange 11. A metal hose 22 is provided between the branch end and the inlet end of the exhaust pipe.

[0051] A valve is provided between the branch end of the tee and the inlet end of the hose 22;

[0052] In this embodiment, a sixth pneumatic shut-off valve 21 is provided between the branch end of the fixed tee 10 and the inlet end of the metal hose 22, and a third manual ball valve 23 for misoperation protection is provided on the exhaust pipe near the gas feed pipe at the top of the stratification tank.

[0053] A connecting component is provided between the front inlet end and the rear outlet end of the liquid seal assembly. The connecting component includes a connecting pipe. The inlet end of the first rotating pipe 8 and the outlet end of the second rotating pipe 12 are connected to the connecting pipe through a set of ring loose flanges. The outlet end of the liquid inlet assembly and the inlet end of the liquid outlet assembly are directly connected through the connecting pipe.

[0054] In this embodiment, the inlet end of the first rotating pipe 8 is connected to the connecting pipe through the fourth ring loose flange 13, and the outlet end of the second rotating pipe 12 is connected to the connecting pipe through the fifth ring loose flange 15.

[0055] Valves are installed on the connecting pipes;

[0056] In this embodiment, a third pneumatic shut-off valve 14 is provided on the connecting pipe;

[0057] The drainage assembly includes a drainage pipe, and a valve is installed on the drainage pipe;

[0058] In this embodiment, the drain assembly includes a second fixed pipe 17, a fifth pneumatic shut-off valve 19 is provided on the second fixed pipe 17, and a second manual ball valve 20 for misoperation protection is provided on the second fixed pipe 17 after the fifth pneumatic shut-off valve 19 and near the liquid inlet pipe of the material receiving tank.

[0059] A drain pipe is connected to the drain line before the valve, and a valve is installed on the drain line.

[0060] In this embodiment, a drain pipe is connected to the second fixed pipe 17 before the fifth pneumatic shut-off valve 19, and a fourth pneumatic shut-off valve 18 is provided on the drain pipe.

[0061] The system also includes a purging assembly, which includes a purging pipe. The purging pipe is connected to the inlet pipe after the valve, and the purging pipe is equipped with a valve.

[0062] In this embodiment, the system also includes a nitrogen purging assembly, which includes a purging pipe. The first fixed pipe 6 is connected to the purging pipe after the first pneumatic shut-off valve 2. From the nitrogen inlet to the connection point of the first fixed pipe 6, a manual gate valve 3 for misoperation protection, a second pneumatic shut-off valve 4 and a check valve 5 are sequentially installed on the purging pipe.

[0063] In this embodiment, the loose-fitting flange includes a pair of loose-fitting flange plates, a gasket is provided between the pair of loose-fitting flange plates, and they are fastened with bolts.

[0064] Example 2:

[0065] A system for adjusting the stratification height of a multiphase liquid interface is basically the same as that in Example 1, wherein the valve is connected to the PLC component 24;

[0066] In this embodiment, the first pneumatic shut-off valve 2, the second pneumatic shut-off valve 4, the third pneumatic shut-off valve 14, the fourth pneumatic shut-off valve 18, the fifth pneumatic shut-off valve 19, and the sixth pneumatic shut-off valve 21 are connected to the PLC assembly 24.

[0067] A method for adjusting the stratification height at the interface of a multiphase liquid, using the aforementioned system to adjust the stratification height at the interface of a multiphase liquid, comprises the following specific steps:

[0068] After the normal material distribution in the stratification tank is completed, PLC component 24 shuts off the system feed, opens the system discharge, and opens the system purging. After the material is discharged and the purging is completed, manually disassemble the ring loose flange, rotate the Z-shaped liquid seal component to the required angle, and then tighten the corresponding ring loose flange to complete the liquid seal height adjustment. At this time, the hose 22 deforms to ensure the connection between the liquid seal component and the gas phase of the stratification tank. After the air tightness check is qualified, it can be put into normal production and use.

[0069] In this embodiment, after the normal material distribution in the stratified tank is completed, the pneumatic valve is connected to the PLC component 24. The PLC component 24 sets a delayed sequential control operation according to the order of closing the system feed, opening the system discharge, and opening the system purging. First, the residual liquid in the system is drained in the order of closing the first pneumatic shut-off valve 2, opening the third pneumatic shut-off valve 14, and opening the sixth pneumatic shut-off valve 21. After a certain period of time, the sixth pneumatic shut-off valve 21 is closed, the second pneumatic shut-off valve 4 is opened, and the liquid seal component is purged with nitrogen. After a certain period of time, the fourth pneumatic shut-off valve 18 is opened, and the fifth pneumatic shut-off valve is closed. 19. Then close the second pneumatic shut-off valve 4, and after a certain period of time, close the fourth pneumatic shut-off valve 18. After the material is drained and the purging is completed, manually disassemble the first ring loose flange 7, the second ring loose flange 9, the third ring loose flange 11, the fourth ring loose flange 13, the fifth ring loose flange 15, and the sixth ring loose flange 16. Rotate the Z-shaped liquid seal assembly to the required angle, and then tighten the corresponding ring loose flanges to complete the adjustment of the liquid seal height. At this time, the hose 22 deforms to ensure the connection between the liquid seal assembly and the gas phase of the stratified tank. After the airtightness check is qualified, it can be put into normal production and use.

[0070] This invention reduces the construction steps and time required for adjusting the stratification height of multiphase liquid interfaces in existing technologies, and provides a simple and practical configuration system that can easily adjust the liquid seal height. Furthermore, the entire adjustment process does not require any hot work, making it safe and reliable.

[0071] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A system for adjusting the stratification height at the interface of a multiphase liquid, characterized in that, The system includes a liquid inlet assembly, a liquid seal assembly, a liquid drain assembly, and a venting assembly. The stratification tank is connected to the inlet end of the liquid inlet assembly. The outlet end of the liquid inlet assembly is connected to the front inlet end of the liquid seal assembly via a loose-fitting ring flange. The middle outlet end of the liquid seal assembly is connected to the inlet end of the venting assembly. The outlet end of the venting assembly is connected to the stratification tank. The rear outlet end of the liquid seal assembly is connected to the inlet end of the liquid drain assembly via a loose-fitting ring flange. The outlet end of the liquid drain assembly is connected to the material receiving tank. The liquid seal assembly is shaped like a zigzag, including a first rotating pipe (8) at the front and a second rotating pipe (12) at the rear. The inlet end of the first rotating pipe (8) and the outlet end of the second rotating pipe (12) are connected to the inlet pipe of the liquid inlet assembly and the drain pipe of the liquid outlet assembly through a set of ring loose flanges. The exhaust assembly includes a tee, a hose (22), and an exhaust pipe. The inlet and outlet ends of the tee are connected to the outlet end of the first rotating pipe (8) and the inlet end of the second rotating pipe (12) through a set of ring loose flanges. A hose (22) is provided between the branch end and the inlet end of the exhaust pipe. The outlet end of the exhaust pipe is connected to the stratified tank.

2. The system for adjusting the layering height of a multiphase liquid interface according to claim 1, characterized in that, The liquid inlet assembly includes a liquid inlet pipe, on which a valve is installed; The drainage assembly includes a drainage pipe with a valve installed on it.

3. The system for adjusting the layering height of a multiphase liquid interface according to claim 2, characterized in that, The liquid inlet assembly includes a first fixed pipe (6), on which a first pneumatic shut-off valve (2) is provided, and a first manual ball valve (1) is provided on the first fixed pipe (6) before the first pneumatic shut-off valve (2) and near the stratification tank; The drainage assembly includes a second fixed pipe (17), on which a fifth pneumatic shut-off valve (19) is provided, and a second manual ball valve (20) is provided on the second fixed pipe (17) after the fifth pneumatic shut-off valve (19) and close to the material receiving tank.

4. The system for adjusting the stratification height of a multiphase liquid interface according to claim 3, characterized in that, The inlet end of the first rotating pipe (8) is connected to the first fixed pipe (6) through the first ring loose flange (7), and the outlet end of the second rotating pipe (12) is connected to the second fixed pipe (17) through the sixth ring loose flange (16). The exhaust assembly includes a fixed tee (10), a hose (22), and an exhaust pipe. The inlet end of the fixed tee (10) is connected to the outlet end of the first rotating pipe (8) through a second loose flange (9), and the outlet end is connected to the inlet end of the second rotating pipe (12) through a third loose flange (11).

5. The system for adjusting the stratification height of a multiphase liquid interface according to claim 3, characterized in that, The drain pipe is connected to the empty drain pipe before the valve, and the empty drain pipe is equipped with a valve; The system also includes a purging assembly, which includes a purging pipe. The purging pipe is connected to the inlet pipe after a valve, and the purging pipe is equipped with a valve.

6. The system for adjusting the stratification height of a multiphase liquid interface according to claim 5, characterized in that, The second fixed pipe (17) is connected to the drain pipe before the fifth pneumatic shut-off valve (19), and the drain pipe is equipped with the fourth pneumatic shut-off valve (18); The system also includes a nitrogen purging assembly, which includes a purging pipe. The first fixed pipe (6) is connected to the purging pipe after the first pneumatic shut-off valve (2). The purging pipe is provided with a manual gate valve (3), a second pneumatic shut-off valve (4) and a check valve (5) in sequence from the nitrogen inlet to the point where it is connected to the first fixed pipe (6).

7. The system for adjusting the layering height of a multiphase liquid interface according to claim 1, characterized in that, A connecting component is provided between the front inlet end and the rear outlet end of the liquid seal assembly. The connecting component includes a connecting pipe. The inlet end of the first rotating pipe (8) and the outlet end of the second rotating pipe (12) are connected to the connecting pipe through a set of ring loose flanges. The outlet end of the liquid inlet assembly and the inlet end of the liquid outlet assembly are directly connected through the connecting pipe.

8. The system for adjusting the stratification height of a multiphase liquid interface according to claim 7, characterized in that, The inlet end of the first rotating pipe (8) is connected to the connecting pipe through the fourth ring loose flange (13), and the outlet end of the second rotating pipe (12) is connected to the connecting pipe through the fifth ring loose flange (15).

9. The system for adjusting the stratification height of a multiphase liquid interface according to claim 7, characterized in that, A valve is installed on the connecting pipe; A valve is provided between the branch end of the tee and the inlet end of the hose (22).

10. The system for adjusting the stratification height of a multiphase liquid interface according to claim 9, characterized in that, A third pneumatic shut-off valve (14) is installed on the connecting pipe; A sixth pneumatic shut-off valve (21) is provided between the branch end of the tee and the inlet end of the hose (22), and a third manual ball valve (23) is provided on the exhaust pipe near the stratified tank.

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