A multiphase fluid mixed oil-water-gas separation device

Abstract

The present invention discloses a multiphase fluid mixed oil-water gas separation device, comprising a main tank body, a slag discharge cone groove is arranged at the bottom of the inner side of the main tank body, a slag discharge spiral strip is arranged in rotation in the slag discharge cone groove, a slag blocking plate is arranged at the large diameter end of the slag discharge cone groove, a through hole is arranged on the slag blocking plate, the height of the through hole from the highest point to the bottom surface of the main tank body does not exceed the distance from the lowest point of the small diameter end of the slag discharge cone groove to the bottom surface, a first partition plate and a second partition plate are arranged on one side of the slag blocking plate, the first partition plate is located between the second partition plate and the slag blocking plate, and a low-pressure exhaust chamber is formed between the first partition plate and the second partition plate, a liquid inlet pressure valve is arranged on the first partition plate, a submersible pump and a stirring frame are arranged at the bottom of the low-pressure exhaust chamber, and the output end of the submersible pump passes through the second partition plate. The gas separation efficiency can be improved by setting a low-pressure degassing chamber; the solid impurities can be separated by setting a slag discharge spiral strip; the separation efficiency and quality of oil and water can be improved by the mutual cooperation of a liquid level detection device and a drainage control valve.

Description

Technical Field

[0001] The invention belongs to the technical field of separators, and in particular relates to a multiphase fluid mixed oil-water-gas separation device. Background Art

[0002] In the existing oil and gas field production process, the directly produced crude oil contains a large amount of water and natural gas, which needs to be dehydrated and degassed. The treated crude oil and natural gas are exported separately as products, and the separated water can be recycled as reinjection water for the oil well.

[0003] The oil, gas and water three-phase separator is one of the most common equipment in the oilfield development and production process. It mainly uses the difference in specific gravity of gas, oil and water to separate them. There are many types of three-phase separators at present, but the existing oil-water separators still have the following problems:

[0004] 1. Existing equipment lacks solid separation function. In addition to water and natural gas, crude oil sometimes contains solid impurities, which will be deposited in the three-phase separator, requiring frequent maintenance of the equipment, thereby increasing production costs;

[0005] 2. The gas separation capacity of existing equipment is insufficient. Since the gravity of oil is small, it will form a thick oil film on the surface of the water body, making it difficult for the entrained natural gas to pass through the oil film and be discharged, resulting in insufficient separation of the three-phase substances of oil, gas and water. At the same time, it will also cause part of the natural gas to be discharged from the drain with the bottom water, resulting in a waste of resources;

[0006] 3. The existing equipment has low oil-water separation efficiency. In the three-phase separation of oil, gas and water, the control of the oil-water interface directly affects the efficiency and quality of oil-water separation. If the oil-water interface is too low, the separation efficiency will be low, and if the oil-water interface is too high, the oil-water separation will not be complete.

[0007] Therefore, we need to design a multiphase fluid mixed oil-water-gas separation device to solve these problems. Summary of the invention

[0008] The problem to be solved by the present invention is to provide a multiphase fluid mixed oil-water-gas separation device, which solves the problems of insufficient gas separation capacity, low oil-water separation efficiency and single function of existing equipment.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0010] A multiphase fluid mixed oil, water and gas separation device comprises a main tank body, a slag discharge cone groove is arranged at the bottom inner side of the main tank body, a slag discharge spiral strip is rotatably arranged in the slag discharge cone groove, a slag baffle plate is arranged at the large diameter end of the slag discharge cone groove, a through hole is arranged on the slag baffle plate, a first baffle plate and a second baffle plate are arranged on one side of the slag baffle plate, the first baffle plate is located between the second baffle plate and the slag baffle plate, and a low-pressure exhaust chamber is formed between the first baffle plate and the second baffle plate, a liquid inlet pressure valve is arranged on the first baffle plate, a submersible pump and a stirring frame are arranged at the bottom of the low-pressure exhaust chamber, the output end of the submersible pump passes through the second baffle plate, an air pressure regulating valve is arranged on the top of the low-pressure exhaust chamber, an overflow plate is arranged on one side of the second baffle plate, a detection device and a drainage control valve are arranged between the overflow plate and the second baffle plate, the detection device is connected to the overflow plate and the drainage control valve respectively, and the drainage control valve is fixedly arranged on the main tank body.

[0011] Preferably, a liquid baffle, an upper wave-breaking plate, a lower wave-breaking plate and a grid plate are also arranged between the second partition plate and the overflow plate. The liquid baffle plate is fixed on the inner wall of the main tank body and is close to the output end of the submersible pump. The upper wave-breaking plate is fixed on the lower side of the main tank body. The upper wave-breaking plate is fixed on the top of the main tank body, and liquid holes are provided on the upper wave-breaking plate and the lower wave-breaking plate. There is at least one grid plate, which is located between the upper wave-breaking plate or the lower wave-breaking plate and the overflow plate.

[0012] Such a setting can eliminate the up and down fluctuations of the liquid level and ensure the quality of oil-water separation.

[0013] Preferably, a base is provided under the main tank body, a low-pressure tank and a vacuum pump group are fixedly provided on the base at one end of the main tank body, an output end of the vacuum pump group is connected to the low-pressure tank, and the air pressure regulating valve is connected to the low-pressure tank.

[0014] Such an arrangement can create a low-pressure environment and improve the efficiency of gas separation.

[0015] Preferably, the detection device includes a controller, a liquid level scale, a liquid level float, a positioning scale and a positioning ring, the positioning ring is fixedly arranged on the overflow plate through a connecting rod, the controller is fixedly arranged on the inner top of the main tank body, one end of the liquid level scale and the positioning scale are connected to the controller, and the other end is connected to the main tank body, the liquid level float is sleeved on the liquid level scale, the positioning ring is sleeved on the positioning scale, and the controller is electrically connected to the drain control valve.

[0016] With such an arrangement, the liquid level can be detected and the drainage volume can be controlled by controlling the drainage control valve to adjust the liquid level height and ensure the quality of oil-water separation.

[0017] Preferably, a demister is fixedly provided on the top of the low-pressure exhaust chamber.

[0018] Such an arrangement can ensure the gas separation effect.

[0019] Preferably, a stirring motor is fixedly arranged on the outside of the main tank body, and an output end of the stirring motor is connected to the stirring frame.

[0020] Such a setting can accelerate the release of gas in crude oil.

[0021] Preferably, a feed pipe is provided through the end of the main tank body, and the output direction of the output end of the feed pipe is downward and is located above the large-diameter end of the slag discharge spiral strip.

[0022] Such setting can ensure the slag removal effect.

[0023] Preferably, a slag discharge motor is fixedly provided at the end of the main tank body below the feed pipe, a transmission shaft is fixedly provided at the output end of the slag discharge motor, the free end of the transmission shaft passes through the end of the main tank body and is rotatably connected to the slag baffle plate, and the slag discharge spiral strip is fixedly connected to the transmission shaft.

[0024] Such an arrangement can ensure the normal operation of the slag discharge spiral strips.

[0025] Preferably, a slag accumulation area is further provided on one side of the small diameter end of the slag discharge cone groove, and a slag discharge port is provided on the main tank body below the slag accumulation area.

[0026] Such arrangement facilitates the accumulation and cleaning of debris discharged by the spiral strips.

[0027] Preferably, a manhole is provided at the other end of the main tank body.

[0028] Such arrangement makes it easy to carry out maintenance and inspection on the inside of the main tank.

[0029] The advantages and positive effects of the present invention are:

[0030] 1. The present invention provides a conical slag discharge spiral strip, and the rotation of the spiral strip can push the solid impurities in the crude oil to move along the slag discharge cone groove until they fall into the slag accumulation area, thereby realizing the separation of the solid impurities in the crude oil;

[0031] 2. The present invention provides a low-pressure exhaust chamber, reduces the air pressure in the exhaust chamber, and combines the stirring of the crude oil by a stirring rack, so as to separate and release the gas dissolved in the crude oil at normal atmospheric pressure, thereby improving the gas separation effect.

[0032] 3. The present invention sets two sets of scales, one set of scales is used to detect the height of the oil-water interface, and the other set of scales is used to mark the height of the overflow plate. The drainage control valve is used to adjust the drainage flow rate to adjust the height of the oil-water interface, so that the separation device can improve the separation efficiency while ensuring the quality of the separated crude oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 It is an axonometric schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the internal structure of the main tank body of the present invention;

[0036] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure in FIG.

[0037] The following are the descriptions of the reference numerals:

[0038] 1. Base; 2. Main tank; 3. Manhole; 4. Slag accumulation area; 5. Slag discharge spiral strip; 6. Slag retaining plate; 7. First baffle; 8. Second baffle; 9. Low-pressure exhaust chamber; 10. Feed pipe; 11. Overflow plate; 12. Demister; 13. Liquid inlet pressure valve; 14. Submersible pump; 15. Liquid hole; 16. Stirring motor; 17. Stirring frame; 18. Controller; 19. Liquid level gauge; 20. Liquid level Floating body; 21. Positioning ring; 22. Drain control valve; 23. Connecting rod; 24. Oil drain pipe; 25. Grid plate; 26. Drain pipe; 27. Positioning scale; 28. Vacuum pump group; 29. ​​Low-pressure tank; 30. Slag discharge cone groove; 31. Transmission shaft; 32. Slag discharge motor; 33. Through hole; 34. Air pressure regulating valve; 35. Liquid baffle plate; 36. Upper wave-breaking plate; 37. Lower wave-breaking plate; 38. Overflow bin. DETAILED DESCRIPTION

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0041] The present invention will be further described below in conjunction with the accompanying drawings:

[0042] Example 1: Figure 1-Figure 3 As shown, a multiphase fluid mixed transportation oil-water-gas separation device comprises a main tank body 2, a slag discharge cone groove 30 is arranged at the bottom of the inner side of the main tank body 2, a slag discharge spiral strip 5 is rotatably arranged in the slag discharge cone groove 30, a slag retaining plate 6 is arranged at the large diameter end of the slag discharge cone groove 30, a through hole 33 is arranged on the slag retaining plate 6, the height of the highest point of the through hole 33 from the bottom surface of the main tank body 2 does not exceed the distance from the lowest point of the small diameter end of the slag discharge cone groove 30 to the bottom surface, a first partition plate 7 and a second partition plate 8 are arranged on one side of the slag retaining plate 6, the first partition plate 7 is located between the second partition plate 8 and the slag retaining plate 6, and the first partition plate 7 is located between the second partition plate 8 and the slag retaining plate 6, and the first A low-pressure exhaust chamber 9 is provided between the partition 7 and the second partition 8. A liquid inlet pressure valve 13 is provided on the first partition 7. A submersible pump 14 and a stirring frame 17 are provided at the bottom of the low-pressure exhaust chamber 9. The output end of the submersible pump 14 passes through the second partition 8. An air pressure regulating valve 34 is provided at the top of the low-pressure exhaust chamber 9. An overflow plate 11 is provided on one side of the second partition 8. A detection device and a drainage control valve 22 are provided between the overflow plate 11 and the second partition 8. The detection device is respectively connected to the overflow plate 11 and the drainage control valve 22, and the drainage control valve 22 is fixedly provided on the main tank body 2.

[0043] Specifically, a liquid baffle 35, an upper wave-breaking plate 36, a lower wave-breaking plate 37 and a grid plate 25 are also provided between the second partition plate 8 and the overflow plate 11. The liquid baffle 35 is fixed on the inner wall of the main tank body 2 and is close to the output end of the submersible pump 14. The upper wave-breaking plate 36 is fixedly arranged on the lower side of the main tank body 2. The upper wave-breaking plate 36 is fixedly arranged on the top of the main tank body 2. Under the obstruction of the upper wave-breaking plate 36 and the lower wave-breaking plate 37, the up and down fluctuations of the liquid level can be eliminated to ensure the separation effect. The upper wave-breaking plate 36 and the lower wave-breaking plate 37 are both provided with liquid holes 15, through which the flow of crude oil can be ensured. There is at least one grid plate 25, which is located between the upper wave-breaking plate 36 or the lower wave-breaking plate 37 and the overflow plate 11. The grid plate 25 can further eliminate the fluctuations of the liquid level to ensure the separation quality of oil and water.

[0044] Specifically, a base 1 is provided under the main tank body 2, and a low-pressure tank 29 and a vacuum pump group 28 are fixedly provided on the base 1 at one end of the main tank body 2. The output end of the vacuum pump group 28 is connected to the low-pressure tank 29, and the air pressure regulating valve 34 is connected to the low-pressure tank 29. The vacuum pump group 28 can establish a low-pressure environment in the low-pressure exhaust chamber 9, and the low-pressure tank 29 can maintain the low-pressure environment in the low-pressure exhaust chamber 9 for a long time, thereby ensuring that the gas can be fully separated.

[0045] Specifically, the detection device includes a controller 18, a liquid level gauge 19, a liquid level float 20, a positioning gauge 27 and a positioning ring 21. The positioning ring 21 is fixedly arranged on the overflow plate 11 through a connecting rod 23. The controller 18 is fixedly arranged on the inner top of the main tank body 2, which can avoid aging and damage of the seal due to long-term immersion in crude oil, thereby preventing damage to the equipment due to penetration of crude oil. One end of the liquid level gauge 19 and the positioning gauge 27 are connected to the controller 18, and the other end is connected to the main tank body 2. The body 20 is sleeved on the liquid level scale 19, and the positioning ring 21 is sleeved on the positioning scale 27, wherein Hall sensors are arranged inside the liquid level scale 19 and the positioning scale 27, and magnets are installed on the liquid level float 20 and the positioning ring 21, and the Hall sensor is used to detect the liquid level, and the liquid level float 20 needs to be adjusted before use, and the liquid level float 20 can float at the oil-water interface by controlling the ratio of the air and the counterweight inside the float, and the controller 18 is electrically connected to the drain control valve 22.

[0046] Specifically, a demister 12 is fixedly arranged on the top of the low-pressure exhaust chamber 9, so that tiny water droplets or oil droplets carried by the gas can be separated, thereby ensuring the quality of the separated gas.

[0047] Specifically, a stirring motor 16 is fixedly provided on the outside of the main tank body 2, and the output end of the stirring motor 16 is connected to the stirring frame 17, so that the stirring frame 17 can be driven to rotate to stir the crude oil inside the low-pressure exhaust chamber 9 to accelerate the release of gas inside the crude oil.

[0048] Specifically, a feed pipe 10 is provided through the end of the main tank body 2, and the output direction of the output end of the feed pipe 10 is downward and is located above the large diameter end of the slag discharge spiral strip 5, which can improve the slag discharge effect.

[0049] Specifically, a slag discharge motor 32 is fixedly provided at the end of the main tank body 2 below the feed pipe 10, and a transmission shaft 31 is fixedly provided at the output end of the slag discharge motor 32. The free end of the transmission shaft 31 passes through the end of the main tank body 2 and is rotatably connected to the slag baffle plate 6, and the slag discharge spiral bar 5 is fixedly connected to the transmission shaft 31, thereby ensuring the normal operation of the slag discharge spiral bar 5.

[0050] Specifically, a slag accumulation area 4 is provided on one side of the small diameter end of the slag discharge cone groove 30, and a slag discharge port is provided on the main tank body 2 below the slag accumulation area 4, so as to facilitate cleaning.

[0051] Specifically, a manhole 3 is provided at the other end of the main tank body 2, through which the staff can conveniently enter the main tank body 2 for maintenance and overhaul.

[0052] The working process of this embodiment is as follows: during operation, the vacuum pump group 28 is first started. After the vacuum pump group 28 is started, the gas in the low-pressure tank 29 will be extracted to form a low pressure in the low-pressure tank 29. Then the slag discharge motor 32 is started. After the slag discharge motor 32 is started, the transmission shaft 31 will be driven to rotate. The transmission shaft 31 is used to drive the slag discharge spiral bar 5 to rotate, and then crude oil is input into the main tank body 2 through the feed pipe 10. After the crude oil flows out from the output end of the feed pipe 10, it will fall on the slag discharge cone groove 30. The rotating slag discharge spiral bar 5 will push the solid particle impurities in the crude oil into the slag accumulation area 4, and the crude oil will pass through the through hole 33 and flow between the first partition plate 7 and the slag baffle plate 6.

[0053] Then, the air pressure regulating valve 34 connected to the low-pressure tank 29 is opened, and the air in the low-pressure exhaust chamber 9 is extracted by the low-pressure tank 29 to form a low pressure in the low-pressure exhaust chamber 9. When the pressure meets the opening condition of the liquid inlet pressure valve 13, the liquid inlet pressure valve 13 will open, and the crude oil between the slag baffle plate 6 and the first partition plate 7 will be sucked into the low-pressure exhaust chamber 9. Then, the stirring motor 16 is started to stir the crude oil entering the low-pressure exhaust chamber 9 to make the gas dissolved in the crude oil easier to release. When the crude oil level in the low-pressure exhaust chamber 9 is detected by the liquid level sensor in the low-pressure exhaust chamber 9, the air pressure regulating valve 34 adjusts the opening degree to keep the gas pressure in the low-pressure exhaust chamber 9 at all times at the set low-pressure state, and the gas released after being stirred by the stirring frame 17 will be drawn away.

[0054] Then, the submersible pump 14 is started. After starting, the submersible pump 14 will transport the liquid in the low-pressure exhaust chamber 9 to between the second partition plate 8 and the overflow plate 11, and the crude oil flowing out from the output end of the submersible pump 14 will first hit the liquid baffle plate 35, and then fall along the liquid baffle plate 35. Under the action of the upper and lower wave-breaking plates, the fluctuation of the liquid surface is reduced. At the same time, the grid plate 25 can further eliminate the waves on the liquid surface.

[0055] As the degassed crude oil is continuously input, the liquid level between the second partition plate 8 and the overflow plate 11 will also increase. At the same time, due to the different densities of oil and water, the liquid will begin to stratify. When the oil layer above the water surface exceeds the height of the overflow plate 11, it will flow from above the overflow plate 11 into the overflow bin 38 and be discharged through the oil drain pipe 24 below the overflow bin 38, while the water will be blocked by the overflow plate 11. The adjusted liquid level float 20 will float on the water surface at this time, that is, it will be located between the oil and water interface and move under the buoyancy of the water. When the height of the liquid level float 20 reaches the state flush with the positioning scale 27, the drain control valve 22 will start to drain water using the drain pipe 26 to balance the inlet and outlet liquids, ensuring that the oil-water interface can always be in the best separation position, which can ensure both separation efficiency and separation quality.

[0056] In this embodiment, since the gas in the crude oil is natural gas, and when natural gas and air are mixed to a certain ratio and encounter open flames, there is a risk of explosion. When the low-pressure exhaust chamber 9 is used for gas separation, most of the gas in the low-pressure exhaust chamber 9 has been pumped out. At the same time, as the gas in the crude oil is continuously released, the inside of the low-pressure chamber will be filled with natural gas, which can avoid the mixing of natural gas and air, reducing the danger. In addition, the oil-water interface is adjusted according to the height of the overflow plate by controlling the drainage speed to achieve an efficient oil-water separation effect.

[0057] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A multiphase fluid mixed transport oil-water-gas separation device, comprising a main tank (2), characterized in that: A slag discharge conical groove (30) is provided at the bottom of the inner side of the main tank body (2), a slag discharge spiral strip (5) is rotatably provided in the slag discharge conical groove (30), a slag blocking plate (6) is provided at the large diameter end of the slag discharge conical groove (30), a through hole (33) is provided on the slag blocking plate (6), a first partition plate (7) and a second partition plate (8) are provided on one side of the slag blocking plate (6), the first partition plate (7) is located between the second partition plate (8) and the slag blocking plate (6), and a low-pressure exhaust chamber (9) is provided between the first partition plate (7) and the second partition plate (8), and a liquid inlet pressure valve (33) is provided on the first partition plate (7). 13), a submersible pump (14) and a stirring frame (17) are arranged at the bottom of the low-pressure exhaust chamber (9), the output end of the submersible pump (14) passes through the second partition (8), a gas pressure regulating valve (34) is arranged at the top of the low-pressure exhaust chamber (9), an overflow plate (11) is arranged on one side of the second partition (8), a detection device and a drainage control valve (22) are arranged between the overflow plate (11) and the second partition (8), the detection device is respectively connected to the overflow plate (11) and the drainage control valve (22), and the drainage control valve (22) is fixedly arranged on the main tank body (2); The detection device comprises a controller (18), a liquid level scale (19), a liquid level float (20), a positioning scale (27) and a positioning ring (21); the positioning ring (21) is fixedly arranged on the overflow plate (11) through a connecting rod (23); the controller (18) is fixedly arranged on the inner top of the main tank body (2); one end of the liquid level scale (19) and the positioning scale (27) are both connected to the controller (18), and the other end is connected to the main tank body (2); the liquid level float (20) is sleeved on the liquid level scale (19), the positioning ring (21) is sleeved on the positioning scale (27), and the controller (18) is electrically connected to the drainage control valve (22); When the height of the liquid level float (20) reaches a state where it is flush with the positioning scale (27), the drainage control valve (22) is activated and drainage is carried out using the drainage pipe (26) to achieve a balance between the inlet and outlet liquids.

2. The oil-water-gas separation device for multiphase fluid mixed transportation according to claim 1, characterized in that: A liquid baffle (35), an upper wave-breaking plate (36), a lower wave-breaking plate (37) and a grid plate (25) are also provided between the second partition plate (8) and the overflow plate (11); the liquid baffle plate (35) is fixed on the inner wall of the main tank body (2) and is close to the output end of the submersible pump (14); the upper wave-breaking plate (36) is fixed on the lower side of the main tank body (2); the upper wave-breaking plate (36) is fixed on the top of the main tank body (2); and both the upper wave-breaking plate (36) and the lower wave-breaking plate (37) are provided with liquid holes (15); and there is at least one grid plate (25) and it is located between the upper wave-breaking plate (36) or the lower wave-breaking plate (37) and the overflow plate (11).

3. The oil-water-gas separation device for mixed transportation of multiphase fluid according to claim 1, characterized in that: A base (1) is provided below the main tank body (2); a low-pressure tank (29) and a vacuum pump group (28) are fixedly provided on the base (1) at one end of the main tank body (2); an output end of the vacuum pump group (28) is connected to the low-pressure tank (29); and the air pressure regulating valve (34) is connected to the low-pressure tank (29).

4. The oil-water-gas separation device for multiphase fluid mixed transportation according to claim 1, characterized in that: A demister (12) is fixedly arranged on the top of the low-pressure exhaust chamber (9).

5. The oil-water-gas separation device for multiphase fluid mixed transportation according to claim 1, characterized in that: A stirring motor (16) is fixedly arranged on the outside of the main tank body (2), and the output end of the stirring motor (16) is connected to the stirring frame (17).

6. The oil-water-gas separation device for multiphase fluid mixed transportation according to claim 1, characterized in that: A feed pipe (10) is provided through the end of the main tank body (2), and the output direction of the output end of the feed pipe (10) is downward and is located above the large diameter end of the slag discharge spiral strip (5).

7. The oil-water-gas separation device for mixed transportation of multiphase fluid according to claim 6, characterized in that: A slag discharge motor (32) is fixedly provided at the end of the main tank body (2) below the feed pipe (10), and a transmission shaft (31) is fixedly provided at the output end of the slag discharge motor (32). The free end of the transmission shaft (31) passes through the end of the main tank body (2) and is rotatably connected to the slag baffle plate (6), and the slag discharge spiral strip (5) is fixedly connected to the transmission shaft (31).

8. The oil-water-gas separation device for multiphase fluid mixed transportation according to claim 1, characterized in that: A slag accumulation area (4) is also provided on one side of the small diameter end of the slag discharge cone groove (30), and a slag discharge port is provided on the main tank body (2) below the slag accumulation area (4).

9. The oil-water-gas separation device for mixed transportation of multiphase fluids according to claim 3, characterized in that: A manhole (3) is provided at the other end of the main tank body (2).

Images