Oil and gas separator for petrochemical industry

Abstract

The application belongs to the technical field of oil-gas separation equipment, and provides an oil-gas separator for petroleum chemical industry, which comprises a tank body, an exhaust port, a liquid discharge port, an air inlet and an exhaust passage are arranged on the tank body, and a flow guide separation mechanism is further arranged in the tank body, which comprises: a fixed cylinder vertically arranged in the tank body; a plurality of spiral blades movably sleeved on the fixed cylinder, which has two use states, respectively, a plurality of spiral blades are sequentially connected in a spiral shape, or each spiral blade is connected in a disc shape and the circumferential side wall is attached to the inner wall of the tank body; a deformation driving assembly arranged in the fixed cylinder drives the spiral blade to change between the two use states; and a gas extraction driving assembly arranged in the fixed cylinder drives the adjacent spiral blades to move close to or away from each other when the spiral blade is in a disc shape. The application can guarantee excellent gas-liquid separation effect without relying on / limiting the impact degree of the oil-gas mixture.

Description

Technical Field

[0001] This invention belongs to the technical field of oil and gas separation equipment, specifically relating to an oil and gas separator for petrochemical applications. Background Technology

[0002] When the pumping unit is operating at the wellhead, two products flow out: one is natural gas without crude oil, which, due to its high pressure, can be directly ejected from the wellhead; the other is crude oil containing associated gas from the oilfield, i.e., an oil-gas mixture, which simultaneously contains liquid oil and dissolved / free natural gas / associated gas, and is extracted through the inner layer of the casing by the pumping unit. This oil-gas mixture can be effectively separated into natural gas and oil using an oil-gas separator to ensure the purity of the natural gas.

[0003] A Chinese invention patent with publication number CN118079577A discloses a natural gas oil-gas separator. By setting retractable spiral blades, the spiral blades continuously expand and contract along the first axis as the oil-containing natural gas continuously impacts the spiral blades. This prevents the oil-containing natural gas from forming a relatively stable flow path along the spiral blades, keeping it in a turbulent or near-turbulent state. Furthermore, the continuous expansion and contraction of the spiral blades directly squeezes or sucks up the oil-containing natural gas, further aggravating the instability of the oil-containing natural gas flow. This avoids boundary effects on the outer peripheral wall of the connecting pipe and the inner peripheral wall of the main shell, thus enhancing the gas-liquid separation effect.

[0004] However, the working condition and performance of this natural gas oil-gas separator are highly dependent on the degree of expansion / contraction of the spiral blades when impacted by oil-containing natural gas. If the impact force of the oil-containing natural gas is insufficient, the gas-liquid separation effect will decrease. Summary of the Invention

[0005] To address the problems existing in the background technology, the present invention provides an oil-gas separator for petrochemical applications that can ensure excellent gas-liquid separation performance without relying on or limiting the impact force of the oil-gas mixture.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A petrochemical oil-gas separator includes a tank body, with an exhaust port, a liquid drain port, and an air inlet respectively provided on its top, bottom, and upper sidewalls; an exhaust channel is provided on the inner sidewall of the tank body, and a flow guiding and separation mechanism is also provided inside the tank body, which includes:

[0008] A fixed cylinder that is vertically fixed inside the tank;

[0009] Several spiral blades are sequentially and movably mounted on the outer circumferential sidewall of the fixed cylinder along its length. They have two usage states: either the spiral blades are connected end to end to form a spiral shape, or each spiral blade is connected end to end to form a disc shape. The circumferential sidewall of the disc-shaped spiral blades is in contact with the inner wall of the tank.

[0010] The deformation drive assembly is installed inside the fixed cylinder, and its drive end is connected to the tail end of the helical blade to drive the helical blade to change between two operating states.

[0011] The suction drive assembly installed inside the fixed cylinder has its drive end connected to the head end of the spiral blade. When the spiral blade is disc-shaped, it drives adjacent spiral blades to move closer to or further away from each other.

[0012] Furthermore, a slot is provided at the leading end of the spiral blade, and a snap-fit ​​assembly that mates with the slot is provided at the trailing end of the spiral blade.

[0013] Furthermore, the snap-fit ​​assembly includes a snap-fit ​​block that is slidably disposed at the tail end of the spiral blade and moves in and out of the snap-fit ​​groove. An inclined groove is formed on the snap-fit ​​block along the inclined direction. A slide rod is slidably disposed in the inclined groove. A limiting block is provided at the other end of the slide rod. The limiting block slides in the tail end along the vertical direction. A spring is provided between the limiting block and the tail end for pulling the limiting block to move downward.

[0014] The deformation drive assembly includes a first connecting rod that is movably inserted into the tail end and used to push the limit block upward.

[0015] Furthermore, a chamfer is formed at the end of the first connecting rod, and a mating surface that matches the chamfer is formed at the bottom of the limiting block along the inclined direction.

[0016] Furthermore, the deformation driving assembly also includes a guide frame arranged horizontally inside the fixed cylinder, a guide rail arranged vertically at the bottom of the guide frame, a sliding seat slidably arranged on the guide rail, a vertical plate arranged vertically at the bottom of the sliding seat, a fixed seat hinged to the sliding seat via a connecting rod, a baffle connected to the fixed seat, a first hydraulic rod arranged inside the fixed cylinder and whose output end is connected to the baffle; a plurality of first connecting rods are evenly arranged on the sliding seat and the vertical plate, and the fixed seat and the baffle are provided with strip-shaped holes in the vertical direction for the first connecting rods to pass through.

[0017] Furthermore, the air extraction drive assembly includes a second hydraulic rod disposed inside the fixed cylinder, a limiting rod connected to the output end of the second hydraulic rod and disposed in a vertical direction, and a plurality of second connecting rods disposed on the limiting rod, wherein the plurality of second connecting rods are connected one-to-one with the head ends of a plurality of spiral blades.

[0018] Furthermore, the second connecting rod at the bottom is fixedly connected to the limiting rod, and several stops are fixedly sleeved on the limiting rod. The other second connecting rods are all slidably connected to the limiting rod and are respectively located between two adjacent stops.

[0019] Furthermore, a fixing plate is fixedly installed horizontally inside the fixing cylinder, and several through holes are evenly opened through the fixing plate. The top of the fixing cylinder is connected to the center of the fixing plate.

[0020] Furthermore, the inlet end of the exhaust channel is located between several helical blades, and the outlet end of the exhaust channel is located above the fixed cylinder.

[0021] Furthermore, a one-way valve is provided at the inlet end of the exhaust channel.

[0022] This application has the following beneficial effects:

[0023] In the initial state of the oil-gas separator for petrochemical applications, the oil-gas mixture continuously impacts and contacts the spiral blades and the inner peripheral wall of the tank, thus achieving initial separation of oil and gas.

[0024] After the deformation drive assembly drives the spiral blades to deform into a disc shape, a sealed cavity is formed between adjacent spiral blades. This ensures that the oil-gas mixture that subsequently enters the tank is stored at the top and will not mix with the oil-gas being processed in the sealed cavity. This gives the spiral blades a valve function, ensuring the oil-gas separation effect.

[0025] After the suction drive assembly increases the spacing between adjacent spiral blades, it generates negative pressure suction on the oil in multiple sealed cavities, and the extracted gas is located above the liquid. During the subsequent reset process of multiple spiral blades, the sealed cavities decrease, and the gas is discharged to the exhaust port at the top of the tank through the exhaust channel. The oil that has been treated by suction flows to the drain port at the bottom of the tank after the spiral blades return to their spiral shape, thereby further improving the oil-gas separation effect. Attached Figure Description

[0026] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0027] Figure 1 This is a perspective view of the petrochemical oil-gas separator of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the petrochemical oil-gas separator of the present invention;

[0029] Figure 3This is a perspective view of the flow guiding and separating mechanism of the present invention;

[0030] Figure 4 This is a diagram showing the usage state of the helical blade of the present invention;

[0031] Figure 5 This is another usage diagram of the helical blade of the present invention;

[0032] Figure 6 This is a partial cross-sectional structural diagram of the flow guiding and separating mechanism of the present invention;

[0033] Figure 7 for Figure 6 A magnified structural diagram of part A in the middle;

[0034] Figure 8 This is a perspective view of the snap-fit ​​assembly of the present invention;

[0035] Figure 9 This is a diagram showing the usage state of the snap-fit ​​component of the present invention;

[0036] Figure 10 for Figure 9 A magnified structural diagram of part B in the middle section;

[0037] Figure 11 This is a perspective view of the flow guiding and separation mechanism (hidden spiral blades) of the present invention;

[0038] Figure 12 This is a perspective view of the deformation driving component of the present invention;

[0039] Figure 13 This is a perspective view of the deformation driving component and the air extraction driving component of the present invention;

[0040] Figure 14 This is a schematic diagram of the air extraction drive assembly of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Tank body; 2. Air inlet; 3. Exhaust outlet; 4. Liquid outlet; 5. Fixing plate; 6. Exhaust channel; 7. Fixing cylinder; 8. Spiral blade; 9. Head end; 10. Tail end; 11. First connecting rod; 12. Second connecting rod; 13. Limiting block; 14. Locking block; 15. Locking groove; 16. Inclined groove; 17. Guide frame; 18. Guide rail; 19. Fixing seat; 20. Connecting rod; 21. Sliding seat; 22. Baffle; 23. Mating surface; 24. Spring; 25. First connecting plate; 26. Second connecting plate; 27. Third connecting plate; 28. Vertical plate; 29. ​​First hydraulic rod; 30. Second hydraulic rod; 31. Limiting rod; 32. First stop block; 33. Second stop block; 34. Third stop block; 35. Fourth stop block. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] An embodiment of an oil-gas separator for petrochemical applications provided by this invention: as follows Figure 1 As shown, a petrochemical oil-gas separator includes a tank 1. The top of the tank 1 is an upwardly convex spherical top cover, and the bottom of the tank 1 is a downwardly convex spherical bottom cover. An exhaust port 3 is connected to the top of the tank 1, specifically at the center of the top cover. A drain port 4 is connected to the bottom of the tank 1, specifically at the center of the bottom cover. An air inlet 2, which allows the oil-gas mixture to enter the tank 1, is connected to the upper part of the side wall of the tank 1 and is tangentially arranged to the side wall of the tank 1. Multiple support legs are evenly installed at the bottom of the tank 1, i.e., the bottom of the bottom cover, to provide stable support for the tank 1.

[0045] like Figure 2 As shown, an exhaust channel 6 is provided on the inner wall of the tank 1. The exhaust channel 6 is arranged vertically, with an open outlet at the top and multiple inlets distributed along it, each equipped with a one-way valve. A flow-guiding and separating mechanism is also installed inside the tank 1. This mechanism includes: a fixed cylinder 7 fixedly installed vertically inside the tank 1; and four spiral blades 8 movably mounted on the outer circumferential side wall of the fixed cylinder 7 along its length. The spiral blades 8 have a certain degree of deformability, and their head 9 and tail 10 are made of hard material. They have two operating states: the four spiral blades 8 are connected end-to-end in a spiral shape (e.g., ...). Figure 3 and Figure 4 As shown), or each of the spiral blades 8 connects end to end to form a disk shape (as shown). Figure 5 As shown, the circumferential sidewall of the disc-shaped spiral blade 8 fits against the inner wall of the tank 1 and achieves a sealing effect; the deformation drive assembly installed in the fixed cylinder 7 has its drive end connected to the tail end 10 of the spiral blade 8 to drive the spiral blade 8 to change between two usage states; the air extraction drive assembly installed in the fixed cylinder 7 has its drive end connected to the head end 9 of the spiral blade 8, and when the spiral blade 8 is disc-shaped, it drives adjacent spiral blades 8 to move closer to / away from each other.

[0046] A fixing plate 5 is fixedly installed horizontally inside the fixing cylinder 7. Several through holes are evenly distributed on the fixing plate 5. The top of the fixing cylinder 7 is connected to the center of the fixing plate 5. The inlet end of the exhaust channel 6 is located between four spiral blades 8, and the outlet end of the exhaust channel 6 is located above the fixing cylinder 7. A one-way valve is installed at the inlet end of the exhaust channel 6.

[0047] like Figure 6 and Figure 9 As shown, the first end 9 of the spiral blade 8 has a slot 15, and the tail end 10 of the spiral blade 8 is connected to a snap-fit ​​component that mates with the slot 15.

[0048] like Figure 7 , Figure 8 and Figure 10 As shown, the snap-fit ​​assembly includes a snap-fit ​​block 14 that is slidably installed in a slot at the tail end 10 of the helical blade 8 and can move in and out of a snap-fit ​​slot 15. A slanted groove 16 is formed on the snap-fit ​​block 14 in an inclined direction. A sliding rod is slidably inserted into the slanted groove 16, and the other end of the sliding rod is connected to a limiting block 13. The limiting block 13 slides vertically within the slot at the tail end 10. A spring 24 is installed between the limiting block 13 and the tail end 10 to pull the limiting block 13 downward. The deformation drive assembly includes a first connecting rod 11 that is movably inserted into the slot at the tail end 10 and used to push the limiting block 13 upward. A chamfer is formed at the end of the first connecting rod 11, and a mating surface 23 that mates with the chamfer is formed at the bottom of the limiting block 13 in an inclined direction.

[0049] like Figure 11 and Figure 12 As shown, the deformation drive assembly also includes a guide frame 17 installed horizontally inside the fixed cylinder 7, a guide rail 18 installed vertically at one bottom end of the guide frame 17, a sliding seat 21 slidably installed on the guide rail 18, a vertical plate 28 installed vertically at the bottom of the sliding seat 21, a fixed seat 19 hinged to the sliding seat 21 via a connecting rod 20, a baffle 22 connected to the fixed seat 19, and a first hydraulic rod 29 installed inside the fixed cylinder 7 with its output end connected to the baffle 22. Four first connecting rods 11 are evenly installed on the sliding seat 21 and the vertical plate 28, and are all arranged horizontally. The uppermost first connecting rod 11 is connected to the sliding seat 21, and the other three first connecting rods 11 are connected to the vertical plate 28. The fixed seat 19 and the baffle 22 have vertically oriented slots for the first connecting rods 11 to pass through.

[0050] like Figure 13 and Figure 14As shown, the suction drive assembly includes a second hydraulic rod 30 installed inside the fixed cylinder 7, a third connecting plate 27 connected to the output end of the second hydraulic rod 30 via a connecting plate and arranged vertically, a limiting rod 31 fixedly connected to the third connecting plate 27 and arranged vertically, and three second connecting rods 12 installed on the limiting rod 31. The lowermost second connecting rod 12 is fixedly connected to the third connecting plate 27 and the limiting rod 31, and the second connecting plate 26 is connected to the leading end 9 of the lowermost spiral blade 8. One end of the other two second connecting rods 12 is slidably fitted onto the limiting rod 31, and these two second connecting rods 12 are respectively connected to the first connecting plate 25 and the second connecting plate 26. The other ends of these two second connecting rods 12 are respectively connected to the leading ends 9 of the two spiral blades 8. The leading end 9 of the uppermost spiral blade 8 is not connected to the second connecting rods 12, but is directly connected to the outer wall of the fixed cylinder 7. Four stops are fixedly mounted on the limiting rod 31, which are, from top to bottom, the first stop 32, the second stop 33, the third stop 34 and the fourth stop 35. The uppermost second connecting rod 12 is located between the first stop 32 and the second stop 33, and the middle second connecting rod 12 is located between the third stop 34 and the fourth stop 35.

[0051] Working principle: In actual use, oil and gas (including oil-bearing natural gas) enters the tank 1 through the inlet 2 and flows along the upper surface of the spiral blades 8. During this process, the oil and gas continuously impact and contact the spiral blades 8 and the inner wall of the tank 1, causing the heavier oil particles to separate from the natural gas. Finally, due to their large weight, the oil particles detach from the bottom spiral blades 8 and fall to the drain port 4 at the bottom of the tank 1; while the natural gas, due to its small mass, passes through the through holes on the fixed plate 5 and rises to the exhaust port 3 at the top of the tank 1.

[0052] During the above process, the separated oil (oil particles) will continuously flow and distribute along the surface of the spiral blade 8, and there will be a certain amount of oil on the surface of the spiral blade 8. By activating the first hydraulic rod 29, the baffle 22 is moved upward, the baffle 22 moves the fixed seat 19 upward, and the fixed seat 19 pushes the sliding seat 21 to move through the connecting rod 20. Under the guidance of the guide rail 18, the sliding seat 21 will slide upward, and the sliding seat 21 and the vertical plate 28 will drive multiple first connecting rods 11 to move upward.

[0053] Simultaneously, multiple first connecting rods 11 drive the tail end 10 of the spiral blade 8 to move upward toward the head end 9 of the spiral blade 8. After the head end 9 of the spiral blade 8 aligns with the tail end 10, the upper surface of the sliding seat 21 abuts against the inner wall of the guide frame 17, and at this time, the sliding seat 21 disengages from the guide rail 18. The movement of the fixed seat 19 will push the sliding seat 21 horizontally into the guide frame 17 via the connecting rod 20. In general, the movement trajectory of the sliding seat 21 is an inverted L-shape.

[0054] like Figure 12 As shown, the sliding seat 21 drives multiple first connecting rods 11 to slide to the left. As the multiple first connecting rods 11 move to the left, the first connecting rods 11 will disengage from the hole at the tail end 10 of the spiral blade 8. During the process of the first connecting rods 11 disengaging, the first connecting rods 11 no longer limit the limiting block 13. The limiting block 13 moves downward under the tension of the spring 24. During the downward movement of the limiting block 13, it drives the connected insert rod to slide obliquely downward in the inclined groove 16 opened on the locking block 14, thereby pushing the locking block 14 out. That is, the locking block 14 in the tail end 10 of the spiral blade 8 extends into the locking groove 15 of the head end 9 of the spiral blade 8. At this time, the head end 9 and the tail end 10 of the spiral blade 8 are connected, making the spiral blade 8 disc-shaped, as shown in the figure. Figure 5 As shown. At this time, the fixing point of the spiral blade 8 is located at the second connecting rod 12.

[0055] Multiple helical blades 8 divide the tank 1 into multiple chambers, with each adjacent helical blade 8 forming a sealed chamber containing the oil from the separation process. When the uppermost helical blade 8 is disc-shaped, subsequent oil and gas entering will be stored above it and will not mix with the oil and gas in the sealed chamber.

[0056] Subsequently, by activating the extension of the second hydraulic rod 30, the second hydraulic rod 30 drives the third connecting plate 27 to move downwards. The third connecting plate 27 then drives the lowest second connecting rod 12 to move downwards, which in turn drives the limiting rod 31 to move downwards. As the limiting rod 31 continues to move downwards, the third stop 34 and the first stop 32, which are fixedly installed on the limiting rod 31, successively push the second connecting rod 12 located below them downwards. The distance between adjacent spiral blades 8 increases, generating negative pressure to extract air from the oil in multiple sealed cavities, separating the gas from the oil and placing the gas above the oil, further improving the oil-gas separation effect.

[0057] The second hydraulic rod 30 is used for resetting, and the second stop 33 and the fourth stop 35 fixedly installed on the limit rod 31 push the two upper second connecting rods 12 to reset respectively. During the resetting process of multiple spiral blades 8, the extracted gas is discharged through the one-way valve at the exhaust channel 6, so that the separated gas is discharged to the exhaust port 3. The gas will not remix with the oil, further improving the separation effect.

[0058] Multiple spiral blades 8 are reset to their initial height, with the insertion holes at the tail ends 10 of the spiral blades 8 aligned with the first connecting rod 11. By activating the first hydraulic rod 29, the first connecting rod 11 is driven to run in an inverted L-shaped trajectory (the principle is the same as above), and the first connecting rod 11 is reinserted into the insertion holes at the tail ends 10 of the spiral blades 8. During the insertion of the first connecting rod 11 into the insertion holes, the end of the first connecting rod 11 abuts against the mating surface 23 of the limiting block 13, pushing the limiting block 13 to overcome the tension of the spring 24 and move upwards. The limiting block 13 then causes the locking block 14 to disengage from the locking groove 15. As the first connecting rod 11 continues to move downwards, the multiple spiral blades 8 are driven back into a spiral shape. At this time, oil and gas can flow normally through the multiple spiral blades 8, while the oil, after being pumped out, flows to the drain port 4 at the bottom of the tank 1.

[0059] Subsequently, the first hydraulic rod 29 and the second hydraulic rod 30 are continuously and intermittently activated to move, without relying on / limiting the impact force of the oil-gas mixture, which can also ensure excellent gas-liquid separation effect and achieve efficient oil-gas (gas-liquid) separation effect.

[0060] In the initial state of the oil-gas separator for petrochemical applications of the present invention, the oil-gas mixture continuously impacts and contacts the spiral blades 8 and the inner peripheral wall of the tank 1, thereby achieving initial separation of oil and gas.

[0061] After the driving spiral blade 8 is deformed into a disc shape, a sealed cavity is formed between adjacent spiral blades 8, ensuring that the oil-gas mixture that subsequently enters the tank is stored at the top and will not mix with the oil-gas being processed in the sealed cavity. This makes the spiral blade 8 act as a valve, ensuring the oil-gas separation effect.

[0062] After the spacing between adjacent spiral blades 8 is increased, a negative pressure is generated to pump the oil in multiple sealed cavities, and the extracted gas is located above the liquid. During the subsequent reset process of multiple spiral blades 8, the sealed cavity is reduced, and the gas is discharged to the exhaust port 3 at the top of the tank 1 through the one-way valve at the exhaust channel 6. The oil after being pumped flows to the drain port 4 at the bottom of the tank 1 after the spiral blades 8 return to their spiral shape, thereby further improving the oil-gas separation effect.

[0063] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A petrochemical oil-gas separator, comprising a tank (1), wherein an exhaust port (3), a liquid drain port (4), and an air inlet (2) are respectively provided on the top, bottom, and upper side wall; characterized in that, An exhaust channel (6) is provided on the inner wall of the tank (1), and a flow guiding and separating mechanism is also provided inside the tank (1), which includes: A fixed cylinder (7) is fixedly installed in the tank (1) in the vertical direction; Several spiral blades (8) are sequentially mounted on the outer circumferential sidewall of the fixed cylinder (7) along the length direction of the fixed cylinder (7). They have two usage states: the spiral blades (8) are connected end to end in sequence to form a spiral shape, or each spiral blade (8) is connected end to end to form a disc shape. The circumferential sidewall of the disc-shaped spiral blades (8) is in contact with the inner wall of the tank body (1). The deformation drive assembly is installed inside the fixed cylinder (7), and its drive end is connected to the tail end (10) of the helical blade (8) to drive the helical blade (8) to change between two use states. The suction drive assembly installed in the fixed cylinder (7) has its drive end connected to the head end (9) of the spiral blade (8). When the spiral blade (8) is disc-shaped, it drives the adjacent spiral blades (8) to move closer to or further away from each other.

2. The petrochemical oil-gas separator according to claim 1, characterized in that, The first end (9) of the spiral blade (8) has a slot (15), and the last end (10) of the spiral blade (8) is provided with a snap-fit ​​component that cooperates with the slot (15).

3. The petrochemical oil-gas separator according to claim 2, characterized in that, The snap-fit ​​assembly includes a snap-fit ​​block (14) that is slidably disposed on the tail end (10) of the spiral blade (8) and enters and exits the snap-fit ​​groove (15). An inclined groove (16) is opened on the snap-fit ​​block (14) along the inclined direction. A slide rod is slidably disposed in the inclined groove (16). A limiting block (13) is provided at the other end of the slide rod. The limiting block (13) slides in the tail end (10) along the vertical direction. A spring (24) is provided between the limiting block (13) and the tail end (10) for pulling the limiting block (13) to move downward. The deformation drive assembly includes a first connecting rod (11) that is movably inserted into the tail end (10) and used to push the limit block (13) upward.

4. The petrochemical oil-gas separator according to claim 3, characterized in that, The end of the first connecting rod (11) is chamfered, and the bottom of the limiting block (13) is provided with a mating surface (23) that matches the chamfer along the inclined direction.

5. The petrochemical oil-gas separator according to claim 3, characterized in that, The deformation drive assembly also includes a guide frame (17) arranged horizontally in the fixed cylinder (7), a guide rail (18) arranged vertically at the bottom of the guide frame (17), a sliding seat (21) slidably arranged on the guide rail (18), a vertical plate (28) arranged vertically at the bottom of the sliding seat (21), a fixed seat (19) hinged to the sliding seat (21) by a connecting rod (20), a baffle (22) connected to the fixed seat (19), and a first hydraulic rod (29) arranged in the fixed cylinder (7) with its output end connected to the baffle (22); a plurality of first connecting rods (11) are evenly arranged on the sliding seat (21) and the vertical plate (28), and the fixed seat (19) and the baffle (22) have strip holes in the vertical direction for the first connecting rods (11) to pass through.

6. The petrochemical oil-gas separator according to claim 1, characterized in that, The air extraction drive assembly includes a second hydraulic rod (30) disposed inside the fixed cylinder (7), a limiting rod (31) connected to the output end of the second hydraulic rod (30) and disposed in the vertical direction, and a plurality of second connecting rods (12) disposed on the limiting rod (31). The plurality of second connecting rods (12) are connected one-to-one with the head end (9) of a plurality of spiral blades (8).

7. The petrochemical oil-gas separator according to claim 6, characterized in that, The second connecting rod (12) at the bottom is fixedly connected to the limiting rod (31). Several blocks are fixedly sleeved on the limiting rod (31). The other second connecting rods (12) are all slidably connected to the limiting rod (31) and are located between different adjacent blocks.

8. The petrochemical oil-gas separator according to claim 1, characterized in that, A fixing plate (5) is fixedly installed in the fixing cylinder (7) along the horizontal direction. Several through holes are evenly opened on the fixing plate (5). The top of the fixing cylinder (7) is connected to the center of the fixing plate (5).

9. The petrochemical oil-gas separator according to claim 1 or 8, characterized in that, The inlet end of the exhaust channel (6) is located between several spiral blades (8), and the outlet end of the exhaust channel (6) is located above the fixed cylinder (7).

10. The petrochemical oil-gas separator according to claim 9, characterized in that, A one-way valve is provided at the inlet end of the exhaust channel (6).

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