A columnar swirl separation device

Abstract

The present invention provides a columnar cyclone group separation device, including a columnar cyclone integration device. The columnar cyclone integration device includes a large columnar cyclone group and a small columnar cyclone group. The large columnar cyclone group includes a swirl initiation pipe section. An inlet pipe section is arranged on the side of the swirl initiation pipe section, and an inlet shut-off valve is arranged at the end of the inlet pipe section. An overflow outlet pipe section is arranged above the swirl initiation pipe section, and an overflow port shut-off valve is arranged above the overflow outlet pipe section. The swirl initiation pipe section is connected to a separation pipe section below. A bottom flow outlet pipe section is arranged on one side of the separation pipe section, and a bottom flow port shut-off valve is arranged at the end of the bottom flow outlet pipe section. A sewage discharge pipe section is arranged at the bottom of the separation pipe section. The columnar cyclone group separation device provided by the present invention is easy to operate and maintain, has different operating modes, can be used for different fluid throughput conditions, has good separation effects, can adapt to high-pressure environments, and has complete device functions.

Description

Technical Field

[0001] The present invention belongs to the technical field of multiphase fluid separation, and particularly relates to a columnar cyclone group separation device. Background Art

[0002] During the development of deep - sea oilfields, the produced fluid is usually a multiphase flow including seawater. As the production years increase, the water content in the produced fluid will rise, and it is necessary to separate oil - water mixtures. Although traditional columnar cyclones can complete the separation of oil - water two - phases, the separation effect is affected by the water cut of the incoming flow, the treatment capacity is relatively small, and the separation effect is restricted by working conditions. Therefore, it is necessary to design a separation device that can meet different treatment capacities, different water contents, and has better treatment effects to meet the needs of deep - sea oil development. In addition, the device should also have the characteristics of small occupied space, convenient operation, and easy maintenance. Summary of the Invention

[0003] The purpose of the present invention is to provide a columnar cyclone group separation device with strong processing capacity, easy maintenance, and convenient operation in view of the defects and deficiencies of the prior art.

[0004] To achieve the above - mentioned purpose, the present invention adopts the following technical solutions.

[0005] A columnar cyclone separation device according to the present invention includes a columnar cyclone integration device, which includes a large columnar cyclone group and a small columnar cyclone group. The large columnar cyclone group includes a swirl starting pipe section, an inlet pipe section is arranged on the side of the swirl starting pipe section, and an inlet shut-off valve is arranged at the end of the inlet pipe section. An overflow outlet pipe section is arranged above the swirl starting pipe section, and an overflow port shut-off valve is arranged above the overflow outlet pipe section. The swirl starting pipe section is connected to a separation pipe section below, a bottom flow outlet pipe section is arranged on one side of the separation pipe section, and a bottom flow port shut-off valve is arranged at the end of the bottom flow outlet pipe section. A sewage discharge pipe section is arranged at the bottom of the separation pipe section, and the sewage discharge pipe section is connected to a sewage discharge port shut-off valve. Pipeline integration devices are arranged at each inlet and outlet of the columnar cyclone integration device. The pipeline integration device includes an incoming flow pipeline, an overflow pipeline, a bottom flow pipeline and a sewage discharge pipeline. The incoming flow pipeline includes an incoming flow pipe, an incoming flow intermediate shut-off valve and an incoming flow end shut-off valve. A first incoming flow flowmeter is arranged at one end of the incoming flow pipe, and a second incoming flow flowmeter is arranged outside the incoming flow end shut-off valve. The overflow pipeline includes an overflow pipe, an overflow intermediate shut-off valve and an overflow end shut-off valve. A first overflow flowmeter is arranged at one end of the overflow pipe, and a second overflow flowmeter is arranged outside the overflow end shut-off valve. The bottom flow pipeline includes a bottom flow pipe, a bottom flow intermediate shut-off valve and a bottom flow end shut-off valve. A first bottom flow flowmeter is arranged at one end of the bottom flow pipe, and a second bottom flow flowmeter is arranged outside the bottom flow end shut-off valve. The sewage discharge pipeline includes a sewage discharge pipe, a sewage discharge intermediate shut-off valve and a sewage discharge end shut-off valve. A separation device frame is arranged at the lower part of the pipeline integration device, and the separation device frame includes a frame body and a pipeline support.

[0006] In the above technical solution, preferably, the large columnar cyclone group is connected to the incoming flow pipeline, the overflow pipeline and the bottom flow pipeline respectively through flanges and bolts, the large columnar cyclone group is connected to the sewage discharge pipeline through internal and external threads, the small columnar cyclone group is connected to the incoming flow pipeline, the overflow pipeline and the bottom flow pipeline respectively through flanges and bolts, and the small columnar cyclone group is connected to the sewage discharge pipeline through internal and external threads.

[0007] In the above technical solution, preferably, the inlet pipe section is fixed to the side of the swirl starting pipe section by welding, the inlet pipe section is tangent to the swirl starting pipe section, and the tangential inlet pipe section is connected to the inlet shut-off valve through flanges and bolts. The overflow outlet pipe section is connected to the swirl starting pipe section through flanges and bolts, and the overflow outlet pipe section is connected to the overflow port shut-off valve through flanges and bolts. The separation pipe section is connected to the swirl starting pipe section through flanges and bolts. The bottom flow outlet pipe section is fixed to the side of the separation pipe section by welding, and the bottom flow outlet pipe section is connected to the bottom flow port shut-off valve through flanges and bolts. The sewage discharge pipe section is connected to the separation pipe section through flanges and bolts, and the sewage discharge port shut-off valve is connected to the sewage discharge pipe section through internal and external threads.

[0008] In the above technical solution, preferably, the overflow outlet pipe section is a pipe with a diameter smaller than that of the swirl generating pipe section, and extends into the swirl generating pipe section for a certain distance. The sewage discharge pipe section is a small-diameter pipe, and the swirl generating pipe section and the separation pipe section are pipes with the same diameter.

[0009] In the above technical solution, preferably, the incoming flow pipe is divided into two sections, which are respectively connected to the incoming flow intermediate shut-off valve through a flange and bolts in the middle, connected to the incoming flow end shut-off valve through a flange and bolts on one side, connected to the first incoming flow flowmeter through a flange and bolts on the other side, and the outside of the incoming flow end shut-off valve is connected to the second incoming flow flowmeter through a flange and bolts.

[0010] In the above technical solution, preferably, the overflow pipe is divided into two sections, which are respectively connected to the overflow intermediate shut-off valve through a flange and bolts in the middle, connected to the overflow end shut-off valve through a flange and bolts on one side, connected to the first overflow flowmeter through a flange and bolts on the other side, and the outside of the overflow end shut-off valve is connected to the second overflow flowmeter through a flange and bolts.

[0011] In the above technical solution, preferably, the underflow pipe is divided into two sections, which are respectively connected to the underflow intermediate shut-off valve through a flange and bolts in the middle, connected to the underflow end shut-off valve through a flange and bolts on one side, connected to the first underflow flowmeter through a flange and bolts on the other side, and the outside of the underflow end shut-off valve is connected to the second underflow flowmeter through a flange and bolts.

[0012] In the above technical solution, preferably, the sewage discharge pipe is divided into two sections, which are connected to the sewage discharge intermediate shut-off valve through a flange and bolts in the middle, and one end is connected to the sewage discharge end shut-off valve through a flange and bolts.

[0013] In the above technical solution, preferably, pipeline supports are welded on the frame body, and the incoming flow pipe, the overflow pipe, the underflow pipe and the sewage discharge pipe are lapped on the pipeline supports.

[0014] The advantages of the present invention are as follows:

[0015] (1) The separation device provided by the present invention is convenient for maintenance, simple to operate, has a wide range of processing flow rates, can process fluids with different viscosities, has a concentrated structure, occupies a small space, and can be used in a variety of projects.

[0016] (2) The separation device provided by the present invention can display the flow rates at various locations online while separating.

[0017] (3) The present invention is not limited to a single number and combination of hydrocyclones, and the number of groups and pipe diameters can be changed according to actual needs.

[0018] (4) For the separation device provided by the present invention, the sewage discharge, sand discharge port and backwash port share the same port, which is convenient for cleaning the inside of the device.

[0019] (5) The present invention is not limited to a single type of shut-off valve and flowmeter, and the types of valves and flowmeters can be selected according to requirements.

[0020] (6) The present invention provides multiple operating modes and can perform two separate operations simultaneously.

[0021] (7) The columnar cyclone device provided by the present invention forms a swirling flow field under the action of flow velocity and the pipe wall through a tangential inlet on the side, and at the same time realizes the separation of multiphase flow with the help of gravity. The structure is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a columnar cyclone separation device of the present invention;

[0023] Figure 2 is a schematic structural diagram of a cyclone group in a columnar cyclone separation device of the present invention;

[0024] Figure 3 is a schematic structural diagram of a cyclone in a columnar cyclone separation device of the present invention;

[0025] Figure 4 is a schematic structural diagram of a pipeline in a columnar cyclone separation device of the present invention;

[0026] Figure 5 is a three-dimensional structural model diagram of a columnar cyclone separation device of the present invention.

[0027] Figures 1-5 In the figure: 1. Columnar cyclone integrated device; 11. Large columnar cyclone group; 111. Swirl starting pipe section; 112. Inlet pipe section; 113. Inlet shut-off valve; 114. Overflow outlet pipe section; 115. Overflow port shut-off valve; 116. Separation pipe section; 117. Underflow outlet pipe section; 118. Underflow port shut-off valve; 119. Drainage pipe section; 120. Drainage port shut-off valve; 12. Small columnar cyclone group; 2. Pipeline integrated device; 21. Incoming flow pipeline; 211. Incoming flow pipe; 212. Incoming flow intermediate shut-off valve; 213. Incoming flow end shut-off valve; 214. First incoming flow flowmeter; 215. Second incoming flow flowmeter; 22. Overflow pipeline; 221. Overflow pipe; 222. Overflow intermediate shut-off valve; 223. Overflow end shut-off valve; 224. First overflow flowmeter; 225. Second overflow flowmeter; 23. Underflow pipeline; 231. Underflow pipe; 232. Underflow intermediate shut-off valve; 233. Underflow end shut-off valve; 234. First underflow flowmeter; 235. Second underflow flowmeter; 24. Drainage pipeline; 241. Drainage pipe; 242. Drainage intermediate shut-off valve; 243. Drainage end shut-off valve; 3. Separation device frame; 31. Frame main body; 32. Pipeline support. Detailed implementation manners

[0028] In order to further understand the content and features of the present invention, the following embodiments are exemplified and described in detail in conjunction with the accompanying drawings as follows:

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "flow in", "flow out", "enter", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0030] See Figures 1 to 5, the columnar cyclone separation device of the present invention includes a columnar cyclone integration device 1. The columnar cyclone integration device 1 includes a large columnar cyclone group 11 and a small columnar cyclone group 12. The large columnar cyclone group 11 includes a swirl starting pipe section 111. An inlet pipe section 112 is arranged on the side of the swirl starting pipe section 111, and an inlet shut-off valve 113 is arranged at the end of the inlet pipe section 112. An overflow outlet pipe section 114 is above the swirl starting pipe section 111, and an overflow port shut-off valve 115 is arranged above the overflow outlet pipe section 114. The swirl starting pipe section 111 is connected to a separation pipe section 116 below. A bottom flow outlet pipe section 117 is arranged on one side of the separation pipe section 116, and a bottom flow port shut-off valve 118 is arranged at the end of the bottom flow outlet pipe section 117. A sewage discharge pipe section 119 is arranged at the bottom of the separation pipe section 116, and the sewage discharge pipe section 119 is connected to a sewage discharge port shut-off valve 120. Pipeline integration devices 2 are arranged at each inlet and outlet of the columnar cyclone integration device 1. The pipeline integration device 2 includes an incoming flow pipeline 21, an overflow pipeline 22, a bottom flow pipeline 23 and a sewage discharge pipeline 24. The incoming flow pipeline 21 includes an incoming flow pipe 211, an incoming flow intermediate shut-off valve 212 and an incoming flow end shut-off valve 213. A first incoming flow flowmeter 214 is arranged at one end of the incoming flow pipe 211, and a second incoming flow flowmeter 215 is arranged outside the incoming flow end shut-off valve 213. The overflow pipeline 22 includes an overflow pipe 221, an overflow intermediate shut-off valve 222 and an overflow end shut-off valve 223. A first overflow flowmeter 224 is arranged at one end of the overflow pipe 221, and a second overflow flowmeter 225 is arranged outside the overflow end shut-off valve 223. The bottom flow pipeline 23 includes a bottom flow pipe 231, a bottom flow intermediate shut-off valve 232 and a bottom flow end shut-off valve 233. A first bottom flow flowmeter 234 is arranged at one end of the bottom flow pipe 231, and a second bottom flow flowmeter 235 is arranged outside the bottom flow end shut-off valve 233. The sewage discharge pipeline 24 includes a sewage discharge pipe 241, a sewage discharge intermediate shut-off valve 242 and a sewage discharge end shut-off valve 243. A separation device frame 3 is arranged at the lower part of the pipeline integration device 2. The separation device frame 3 includes a frame main body 31 and a pipeline support 32.

[0031] As a preferred embodiment, the large columnar cyclone group 11 is connected to the incoming flow pipeline 21, the overflow pipeline 22 and the bottom flow pipeline 23 respectively through flanges and bolts. The large columnar cyclone group 11 is connected to the sewage discharge pipeline 24 through internal and external threads. The small columnar cyclone group 12 is connected to the incoming flow pipeline 21, the overflow pipeline 22 and the bottom flow pipeline 23 respectively through flanges and bolts. The small columnar cyclone group 12 is connected to the sewage discharge pipeline 24 through internal and external threads.

[0032] As a preferred embodiment, the inlet pipe section 112 is fixed to the side of the swirling pipe section 111 by welding. The inlet pipe section 112 is tangent to the swirling pipe section 111. The tangential inlet pipe section 112 is connected to the inlet shut-off valve 113 by flanges and bolts. The overflow outlet pipe section 114 is connected to the swirling pipe section 111 by flanges and bolts. The overflow outlet pipe section 114 is connected to the overflow port shut-off valve 115 by flanges and bolts. The separation pipe section 116 is connected to the swirling pipe section 111 by flanges and bolts. The underflow outlet pipe section 117 is fixed to the side of the separation pipe section 116 by welding. The underflow outlet pipe section 117 is connected to the underflow port shut-off valve 118 by flanges and bolts. The sewage discharge pipe section 119 is connected to the separation pipe section 116 by flanges and bolts. The sewage discharge port shut-off valve 120 is connected to the sewage discharge pipe section 119 by internal and external threads.

[0033] As a preferred embodiment, the overflow outlet pipe section 114 is a pipe with a diameter smaller than that of the swirling pipe section 111 and extends into the swirling pipe section 111 for a certain distance. The sewage discharge pipe section 119 is a small-diameter pipe. The swirling pipe section 111 and the separation pipe section 116 are pipes with the same diameter.

[0034] As a preferred embodiment, the incoming flow pipe 211 is divided into two sections, which are respectively connected to the incoming flow intermediate shut-off valve 212 by flanges and bolts in the middle, connected to the incoming flow end shut-off valve 213 by flanges and bolts on one side, connected to the first incoming flow flowmeter 214 by flanges and bolts on the other side, and the outside of the incoming flow end shut-off valve 213 is connected to the second incoming flow flowmeter 215 by flanges and bolts.

[0035] As a preferred embodiment, the overflow pipe 221 is divided into two sections, which are respectively connected to the overflow intermediate shut-off valve 222 by flanges and bolts in the middle, connected to the overflow end shut-off valve 223 by flanges and bolts on one side, connected to the first overflow flowmeter 224 by flanges and bolts on the other side, and the outside of the overflow end shut-off valve 223 is connected to the second overflow flowmeter 225 by flanges and bolts.

[0036] As a preferred embodiment, the underflow pipe 231 is divided into two sections, which are respectively connected to the underflow intermediate shut-off valve 232 by flanges and bolts in the middle, connected to the underflow end shut-off valve 233 by flanges and bolts on one side, connected to the first underflow flowmeter 234 by flanges and bolts on the other side, and the outside of the underflow end shut-off valve 233 is connected to the second underflow flowmeter 235 by flanges and bolts.

[0037] As a preferred embodiment, the sewage discharge pipe 241 is divided into two sections, which are connected to the sewage discharge intermediate shut-off valve 242 by flanges and bolts in the middle, and one end is connected to the sewage discharge end shut-off valve 243 by flanges and bolts.

[0038] As a preferred embodiment, a pipeline support 32 is welded on the frame body 31, and an incoming flow pipeline 211, an overflow pipeline 221, an underflow pipeline 231 and a sewage discharge pipeline 241 are lapped on the pipeline support 32.

[0039] Device working principle: When using the single separation mode of this device, the incoming flow shut-off valve 213 at the incoming flow end of the incoming flow pipeline 21 remains closed. According to the processing flow rate, some or all of the inlet shut-off valves 113 are opened. For the hydrocyclones where the inlet shut-off valves 113 are in the open state, the overflow port shut-off valves 115 and the underflow port shut-off valves 118 should be in the open state, and all the sewage discharge port shut-off valves 120 remain closed. The incoming flow intermediate shut-off valve 212, the overflow intermediate shut-off valve 222, the underflow intermediate shut-off valve 232, and the sewage discharge intermediate shut-off valve 242 remain open, and the overflow end shut-off valve 223 and the underflow end shut-off valve 233 remain closed. When the device is working, the multiphase fluid first passes through the first incoming flow flowmeter 214 on the incoming flow pipeline 21, and then enters the open cylindrical hydrocyclone for separation. The lighter phase fluid passes through the overflow port shut-off valve 115 and then flows along the overflow pipeline 22 and flows out through the first overflow flowmeter 224. The heavier phase fluid passes through the underflow port shut-off valve 118 and then flows along the underflow pipeline 23 and flows out through the first underflow flowmeter 234. When using the double separation mode of this device, keep the incoming flow intermediate shut-off valve 212, the overflow intermediate shut-off valve 222, and the underflow intermediate shut-off valve 232 in the closed state, keep the incoming flow end shut-off valve 213, the overflow end shut-off valve 223, and the underflow end shut-off valve 233 in the open state. According to the respective processing flow rates of the large cylindrical hydrocyclone group 11 and the small cylindrical hydrocyclone group 12, open the required number of inlet shut-off valves 113. For the hydrocyclones where the inlet shut-off valves 113 are in the open state, the overflow port shut-off valves 115 and the underflow port shut-off valves 118 should be in the open state, and all the sewage discharge port shut-off valves 120 remain closed. When the device is working, the fluid on the side of the small cylindrical hydrocyclone group 12 passes through the first incoming flow flowmeter 214, enters the small cylindrical hydrocyclone group 12 for separation. The light-phase fluid passes through the overflow pipeline 22 and flows out through the first overflow flowmeter 224. The heavy-phase fluid passes through the underflow pipeline 23 and flows out through the first underflow flowmeter 234. The fluid on the side of the large cylindrical hydrocyclone group 11 passes through the second incoming flow flowmeter 215, enters the large cylindrical hydrocyclone group 11 for separation. The light-phase fluid passes through the overflow pipeline 22 and flows out through the second overflow flowmeter 225. The heavy-phase fluid passes through the underflow pipeline 23 and flows out through the second underflow flowmeter 235. When sewage discharge or sand discharge is required, open the sewage discharge port shut-off valve 120, and keep one of the sewage discharge end shut-off valve 242 and the sewage discharge intermediate shut-off valve 243 open and the other closed according to the device mode. When backwashing is required, open the inlet shut-off valve 113 and the sewage discharge port shut-off valve 120 of the cylindrical hydrocyclone integrated device 1, close the overflow port shut-off valve 115 and the underflow port shut-off valve 118, open the incoming flow intermediate shut-off valve 212, the overflow intermediate shut-off valve 222, the underflow intermediate shut-off valve 232, and the sewage discharge intermediate shut-off valve 242, close the incoming flow end shut-off valve 212, the overflow end shut-off valve 222, the underflow end shut-off valve 232, and the sewage discharge end shut-off valve 242, and the flushing liquid flows in from the sewage discharge pipeline 241.

[0040] Working principle of the columnar cyclone: The incoming flow enters the swirl generating pipe section 111 through the inlet shut-off valve 113 and the inlet pipe section 112. Since the inlet pipe section 112 is tangent to the swirl generating pipe section 111, a strong swirl flow is formed inside the swirl generating pipe section 111. After the fluid moves to the separation pipe section 116, the fluids of different phases are separated. Due to the density difference, the light-phase fluid flows upward into the overflow outlet pipe section 114, and under the action of gravity, the heavy-phase fluid passes downward through the underflow outlet pipe section 117 on the side.

[0041] In the specific embodiments described above, the purpose, technical solutions and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A columnar cyclone separation device, comprising a columnar cyclone integrated device (1), characterized in that: The columnar cyclone integrated device (1) includes a large columnar cyclone group (11) and a small columnar cyclone group (12). The large columnar cyclone group (11) includes a swirl starting pipe section (111). An inlet pipe section (112) is arranged on the side of the swirl starting pipe section (111), and an inlet shut-off valve (113) is arranged at the end of the inlet pipe section (112). Above the swirl starting pipe section (111) is an overflow outlet pipe section (114), and an overflow port shut-off valve (115) is arranged above the overflow outlet pipe section (114). The swirl starting pipe section (111) is connected to a separation pipe section (116) below. A bottom flow outlet pipe section (117) is arranged on one side of the separation pipe section (116), and a bottom flow port shut-off valve (118) is arranged at the end of the bottom flow outlet pipe section (117). A sewage discharge pipe section (119) is arranged at the bottom of the separation pipe section (116), and the sewage discharge pipe section (119) is connected to a sewage discharge port shut-off valve (120). Pipeline integrated devices (2) are arranged at each inlet and outlet of the columnar cyclone integrated device (1). The pipeline integrated device (2) includes an incoming flow pipeline (21), an overflow pipeline (22), a bottom flow pipeline (23), and a sewage discharge pipeline (24). The incoming flow pipeline (21) includes an incoming flow pipe (211), an incoming flow intermediate shut-off valve (212), and an incoming flow end shut-off valve (213). A first incoming flow flowmeter (214) is arranged at one end of the incoming flow pipe (211), and a second incoming flow flowmeter (215) is arranged outside the incoming flow end shut-off valve (213). The overflow pipeline (22) includes an overflow pipe (221), an overflow intermediate shut-off valve (222), and an overflow end shut-off valve (223). A first overflow flowmeter (224) is arranged at one end of the overflow pipe (221), and a second overflow flowmeter (225) is arranged outside the overflow end shut-off valve (223). The bottom flow pipeline (23) includes a bottom flow pipe (231), a bottom flow intermediate shut-off valve (232), and a bottom flow end shut-off valve (233). A first bottom flow flowmeter (234) is arranged at one end of the bottom flow pipe (231), and a second bottom flow flowmeter (235) is arranged outside the bottom flow end shut-off valve (233). The sewage discharge pipeline (24) includes a sewage discharge pipe (241), a sewage discharge intermediate shut-off valve (242), and a sewage discharge end shut-off valve (243). A separation device frame (3) is arranged at the lower part of the pipeline integrated device (2). The separation device frame includes a frame main body (31) and a pipeline support (32). The large columnar cyclone group (11) is connected to the incoming flow pipeline (21), the overflow pipeline (22), and the bottom flow pipeline (23) respectively through flanges and bolts, and the large columnar cyclone group (11) is connected to the sewage discharge pipeline (24) through internal and external threads. The small columnar cyclone group (12) is connected to the incoming flow pipeline (21), the overflow pipeline (22), and the bottom flow pipeline (23) respectively through flanges and bolts, and the small columnar cyclone group (12) is connected to the sewage discharge pipeline (24) through internal and external threads. The incoming flow intermediate shut-off valve (212) is arranged on the incoming flow pipeline and is located between the large cylindrical cyclone group (11) and the small cylindrical cyclone group (12); the overflow intermediate shut-off valve (222) is arranged on the overflow pipeline and is located between the large cylindrical cyclone group (11) and the small cylindrical cyclone group (12); the underflow intermediate shut-off valve (232) is arranged on the underflow pipeline and is located between the large cylindrical cyclone group (11) and the small cylindrical cyclone group (12); the sewage discharge intermediate shut-off valve (242) is arranged on the sewage discharge pipeline and is located between the large cylindrical cyclone group (11) and the small cylindrical cyclone group (12).

2. The columnar swirl separation device according to claim 1, characterized in that: The inlet pipe section (112) is fixed to the side of the swirl-starting pipe section (111) by welding. The inlet pipe section (112) is tangent to the swirl-starting pipe section (111). The tangential inlet pipe section (112) is connected to the inlet shut-off valve (113) by flanges and bolts. The overflow outlet pipe section (114) is connected to the swirl-starting pipe section (111) by flanges and bolts. The overflow outlet pipe section (114) is connected to the overflow port shut-off valve (115) by flanges and bolts. The separation pipe section (116) is connected to the swirl-starting pipe section (111) by flanges and bolts. The underflow outlet pipe section (117) is fixed to the side of the separation pipe section (116) by welding. The underflow outlet pipe section (117) is connected to the underflow port shut-off valve (118) by flanges and bolts. The sewage discharge pipe section (119) is connected to the separation pipe section (116) by flanges and bolts. The sewage discharge port shut-off valve (120) is connected to the sewage discharge pipe section (119) by internal and external threads.

3. The columnar cyclone separation device according to claim 2, characterized in that: The overflow outlet pipe section (114) is a pipe with a diameter smaller than that of the swirl-starting pipe section (111) and extends into the swirl-starting pipe section (111) for a certain distance. The sewage discharge pipe section (119) is a small-diameter pipe. The swirl-starting pipe section (111) and the separation pipe section (116) are pipes with the same diameter.

4. A columnar swirl group separation device according to claim 1, characterized in that: The incoming flow pipeline (211) is divided into two sections, which are respectively connected to the incoming flow intermediate shut-off valve (212) by flanges and bolts in the middle, connected to the incoming flow end shut-off valve (213) by flanges and bolts on one side, and connected to the first incoming flow flowmeter (214) by flanges and bolts on the other side. The outside of the incoming flow end shut-off valve (213) is connected to the second incoming flow flowmeter (215) by flanges and bolts.

5. A columnar swirl group separation device according to claim 1, characterized in that: The overflow pipeline (221) is divided into two sections, which are respectively connected to the overflow intermediate shut-off valve (222) by flanges and bolts in the middle, connected to the overflow end shut-off valve (223) by flanges and bolts on one side, and connected to the first overflow flowmeter (224) by flanges and bolts on the other side. The outside of the overflow end shut-off valve (223) is connected to the second overflow flowmeter (225) by flanges and bolts.

6. The columnar cyclone group separation device according to claim 1, characterized in that: The underflow pipeline (231) is divided into two sections, and is respectively connected to the underflow intermediate shut-off valve (232) through a flange and bolts in the middle, connected to the underflow end shut-off valve (233) through a flange and bolts on one side, and connected to the first underflow flowmeter (234) through a flange and bolts on the other side. The outside of the underflow end shut-off valve (233) is connected to the second underflow flowmeter (235) through a flange and bolts.

7. The columnar swirl group separation device according to claim 1, characterized in that: The sewage discharge pipeline (241) is divided into two sections, and is connected to the sewage discharge intermediate shut-off valve (242) through a flange and bolts in the middle, and connected to the sewage discharge end shut-off valve (243) through a flange and bolts at one end.

8. The columnar swirl group separation device according to claim 1, characterized in that: A pipeline support (32) is welded on the frame body (31), and the incoming flow pipeline (211), the overflow pipeline (221), the underflow pipeline (231) and the sewage discharge pipeline (241) are lapped on the pipeline support (32).

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