High-frequency pulse cyclone separation device for oil and gas exploitation

Abstract

The invention relates to the technical field of oil and gas exploitation, and discloses a high-frequency pulse cyclone separation device for oil and gas exploitation, the high-frequency pulse cyclone separation device for oil and gas exploitation comprises a shell and a demister, the demister is installed in the shell, the demister comprises a support frame, a first demisting plate, a second demisting plate and a limiting plate, and the first demisting plate and the second demisting plate are connected with the inner wall of the shell through the support frame; the limiting plate is mounted on the second demisting plate, and a collecting cavity is formed among the first demisting plate, the second demisting plate and the limiting plate; liquid is collected through the collecting cavity, the problem that the liquid on the first demisting plate drips from the first demisting plate can be avoided, the limiting plate is parallel to the bottom of the first demisting plate, a gap between the upper end of the limiting plate and the limiting plate is small, and on the premise that the liquid can flow into the collecting cavity from the gap, the liquid can flow into the first demisting plate through the gap. And meanwhile, the rising gas can be prevented from entering the collecting cavity, and the problem that the liquid is secondarily entrained due to rising of the gas is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of oil and natural gas exploitation, in particular to a high-frequency pulse cyclone separation device for oil and gas exploitation. Background Art

[0002] The high-frequency pulse cyclone separation device is an efficient separation technology developed for crude oil with high water content, high gas content or high viscosity in oil field exploitation. By combining the high-frequency pulse energy field with the cyclone centrifugal force, it can achieve efficient multi-phase separation of oil, water, gas and sand.

[0003] For example, the patent with announcement number CN115671881B and publication date July 18, 2025, discloses a gas-liquid cyclone separation device, which relates to the field of oil and gas resource exploitation technology, and includes: a gas-liquid cyclone tube, the upper end of which is closed, the gas-liquid cyclone tube is provided with spiral guide plates evenly distributed downward in a circumferential spiral along the inner wall thereof, and the gas-liquid cyclone tube is provided with a liquid inlet pipe; a gas escape pipe, the gas escape pipe is arranged in the gas-liquid cyclone tube and arranged along the length direction thereof, the spiral guide plates are arranged between the outer wall of the gas escape pipe and the inner wall of the gas-liquid cyclone tube, and the gas escape pipe is provided with a long notch; An air collecting pipe, one end of which passes through the upper end of the gas-liquid cyclone pipe, and the other end is inserted into the gas escape pipe; a liquid collecting and draining pipe, which is connected to the lower part of the gas-liquid cyclone pipe, and a fixed disk is provided in the upper end part of the liquid collecting and draining pipe, and the fixed disk abuts against the inner wall of the liquid collecting and draining pipe, and the lower end of the gas escape pipe passes through the fixed disk and is connected to the liquid collecting and draining pipe, and a liquid removal hole is provided on the upper end face of the fixed disk, and the liquid removal hole is circumferentially arranged around the lower end of the gas escape pipe, and a miscellaneous discharge pipe connected to the outside is provided at the bottom of the liquid collecting and draining pipe; the outlet end of the liquid inlet pipe has a wedge block to form a wedge-shaped tangential outlet.

[0004] In the existing high-frequency pulse cyclone separation device, a demister is usually set at the gas exhaust port to solve the problem of gas carrying liquid droplets. Among them, the demister is divided into grid plate type demister, wire mesh type demister, etc. In the grid plate type demister, the liquid carried in the gas will collide with the grid plate of the demister, wherein the liquid will adhere to the surface of the grid plate. As the use time increases, the liquid on the grid plate will accumulate more and more, and will form droplets that move on the surface of the grid plate and eventually drip from the grid plate. Among them, improper dripping of the oil captured by the demister will cause secondary pollution and equipment corrosion, and after contacting with the rising gas, there will be a problem of secondary entrainment by the gas. In order to prevent the dripping of liquid, a collection device is usually set below the liquid dripping. However, in the demister, setting a collection device directly below it will affect the rising of the gas and entering the demister. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-frequency pulse cyclone separation device for oil and gas production to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: A high-frequency pulse cyclone separation device for oil and gas development, comprising a shell and a demister, the demister being installed inside the shell, the demister comprising a support frame, a first demister plate, a second demister plate and a limit plate, the first demister plate and the second demister plate being connected to the inner wall of the shell through the support frame, the limit plate being installed on the second demister plate, a collecting chamber being formed between the first demister plate, the second demister plate and the limit plate, the limit plate being located on both sides of the bottom of the first demister plate, and a gap being provided between the limit plate and the first demister plate, and the gap being connected to the collecting chamber.

[0007] Preferably, the first defogger plate is fixedly mounted on the bottom of the support frame, and both ends of the support frame are fixedly connected to the inner wall of the shell. The first defogger plates and the second defogger plates are each provided with multiple groups and are evenly distributed along the length direction of the support frame, forming defogger channels between adjacent first defogger plates and second defogger plates.

[0008] Preferably, a cleaning mechanism is installed in the shell, and the cleaning mechanism is used to clean the liquid in the collection chamber and on the first demisting plate.

[0009] Preferably, the cleaning mechanism includes a first scraper, a second scraper and a drive assembly, the second scraper is connected to the first scraper, the first scraper and the second scraper are located at one end of the collecting chamber, and the drive assembly is used to drive the first scraper and the second scraper to move horizontally along the length direction of the collecting chamber.

[0010] Preferably, the lower end of the limiting plate is rotatably connected to the first defogger plate, and the limiting plate is driven to rotate at the bottom of the first defogger plate.

[0011] Preferably, the limiting plate includes a first plate body and a second plate body, wherein the first plate body is rotatably connected to the second defogger plate, and the second plate body is fixedly connected to the second defogger plate.

[0012] Preferably, a trigger block is provided in the direction of the second scraper moving closer to the target. The trigger block is triangular in structure and has a guiding slope. The trigger block and the limiting plate form a wedge-shaped fit.

[0013] Preferably, the rotated first plate rests on a side surface of the adjacent first defogger plate close to the first plate.

[0014] Preferably, an opening is provided on the side of the shell, and a sealing plate is provided in the opening. The second scraper can also drive the sealing plate to move and open the opening during the movement.

[0015] Preferably, a cleaning box is fixedly installed on the side of the shell, the interior of the cleaning box is hollow and connected to the interior of the shell through an opening, a telescopic rod is installed inside the cleaning box, one end of the telescopic rod is fixedly connected to the sealing plate, and the other end is fixedly connected to the inner wall of the cleaning box, and a spring is installed inside the telescopic rod.

[0016] The beneficial effects of the present invention are: in the above technical solution, the present invention collects the liquid through the collection chamber, which can avoid the problem of liquid on the first defogger plate dripping from it, and the limiting plate is parallel to the bottom of the first defogger plate, and the gap between the upper end of the limiting plate and the limiting plate is small. On the premise that the liquid can flow into the collection chamber from the gap, it can also reduce the obstruction of the rising gas, and at the same time, it can also block the rising gas from entering the collection chamber, avoiding the problem of liquid being entrained again due to the rising gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the structure provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of a partial perspective structure provided by an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the structure of a demister provided in an embodiment of the present invention;

[0021] Figure 4 The embodiment of the present invention provides Figure 3 A magnified view of point A in the figure;

[0022] Figure 5 A schematic structural diagram of a first scraper and a second scraper provided in an embodiment of the present invention;

[0023] Figure 6 A schematic structural diagram of the first plate before rotation provided by an embodiment of the present invention;

[0024] Figure 7 This is a structural schematic diagram of the first plate after rotation provided by an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Shell; 11. Gas and liquid inlet pipe; 12. Gas outlet pipe; 13. Liquid outlet pipe; 14. Opening;

[0027] 2. demister; 21. support frame; 22. first demister plate; 221. first side surface; 222. second side surface; 23. second demister plate; 24. limit plate; 241. first plate body; 242. second plate body; 25. collection chamber; 26. demister channel; 27. side panel;

[0028] 3. Cleaning mechanism; 31. First scraper; 32. Second scraper; 33. Drive assembly; 34. Trigger block; 35. Guide ramp; 36. Cleaning box; 37. Sealing plate; 38. Telescopic rod; 39. Nozzle. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, unless otherwise specified, “multiple” means two or more; the terms “upper”, “lower”, “left”, “right”, “inside”, “outside”, “front end”, “rear end”, “head”, “tail”, etc. indicate orientations or positional relationships based on the orientations 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 a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms “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 an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-7 As shown, an embodiment of the present invention provides a high-frequency pulse cyclone separation device for oil and gas development, including a shell 1 and a demister 2, the demister 2 is installed inside the shell 1, the demister 2 includes a support frame 21, a first demister plate 22, a second demister plate 23 and a limit plate 24, the first demister plate 22 and the second demister plate 23 are both connected to the inner wall of the shell 1 through the support frame 21, the limit plate 24 is installed on the second demister plate 23, and a collecting chamber 25 is formed between the first demister plate 22, the second demister plate 23 and the limit plate 24, the limit plate 24 is located on both sides of the bottom of the first demister plate 22, and a gap is provided between the limit plate 24 and the first demister plate 22, and the gap is connected to the collecting chamber 25.

[0032] Specifically, a gas-liquid inlet pipe 11 is provided on the side of the housing 1, a gas outlet pipe 12 is provided on the top, and a liquid outlet pipe 13 is provided on the bottom. A swirl generating mechanism (not shown) and a pulse coordination mechanism (not shown) are also provided inside the housing 1. The swirl generating mechanism uses the centrifugal force field of the volute flow channel, and the pulse coordination mechanism is used to break the emulsified oil interface film, causing the oil droplets to gather and grow. The above-mentioned swirl generating mechanism, pulse coordination mechanism, etc. are all standard structures in the high-frequency pulse swirl separation device and are all existing technologies, and are not described in detail here.

[0033] The length direction of the support frame 21 is perpendicular to the length direction of the first defogger plate 22 and the length direction of the second defogger plate 23. The support frame 21 is provided with two groups, corresponding to the first defogger plate 22 and the second defogger plate 23 respectively. Side plates 27 are fixedly installed at both ends of the support frame 21. The two groups of support frames 21 are fixedly connected through the side plates 27. The first defogger plate 22 is fixedly installed at the bottom of the support frame 21. The two ends of the support frame 21 are fixedly connected to the inner wall of the shell 1. There are multiple groups of first defogger plates 22 and second defogger plates 23, which are equidistantly distributed along the length direction of the support frame 21. Demisting channels 26 are formed between adjacent first defogger plates 22 and second defogger plates 23. Figure 3 As shown, the first demister plates 22 are trapezoidal in structure, so the demister passage 26 has multiple turning points between two adjacent first demister plates 22. When the gas passes through the turning points, the liquid entrained in the gas will collide with the surface of the first demister plates 22 due to inertia, and the liquid entrained in the gas will adhere to the first demister plates 22.

[0034] In this embodiment, a gap is provided between the end of the limiting plate 24 away from the end connected to the second demister plate 23 and the first demister plate 22. It can be understood that the gap is the liquid inlet of the collecting chamber 25. Because each second demister plate 23 is provided with two sets of limiting plates 24, the two sets of limiting plates 24 are symmetrically distributed along the bottom of the second demister plate 23, and the two limiting plates 24 have two gaps with the two side surfaces of the bottom of the first demister plate 22, that is, the collecting chamber 25 between the first demister plate 22 and the second demister plate 23 has two liquid inlets. In actual use, the gas to be treated is transported from the gas-liquid inlet pipe 11 to the inside of the shell 1, and the liquid generated after being processed by various components in the shell 1 is sent out from the liquid discharge pipe 13 at the bottom of the shell 1. The gas rises in the shell 1, and the rising gas enters the gas discharge pipe 12 after passing through the demister 2 and is discharged through the gas discharge pipe 12. In the process of passing through the demister 2, the liquid is captured by the first demister plate 22. As time goes by, the liquid on the surface of the first demister plate 22 accumulates more and more, and the liquid will flow along the surface of the first demister plate 22, and finally enter the gap between the first demister plate 22 and the limiting plate 24 along the surface, and enter the collecting chamber 25 through the gap, that is, the liquid on both sides of the first demister plate 22 will enter the collecting chamber 25 through the two gaps. The setting of the collecting chamber 25 can avoid the problem of liquid on the first demister plate 22 dripping from it, and the limiting plate 24 is parallel to the bottom of the first demister plate 22, and the gap between the upper end of the limiting plate 24 and the limiting plate 24 is small. On the premise that the liquid can flow from the gap into the collecting chamber 25, it can also reduce the obstruction to the rising gas, and at the same time, it can also block the rising gas from entering the collecting chamber 25, thereby avoiding the problem of liquid being entrained for the second time due to the rising gas.

[0035] In another embodiment of the present invention, a cleaning mechanism 3 is further installed in the housing 1 , and the cleaning mechanism 3 is used to clean the liquid in the collection chamber 25 and on the first demisting plate 22 .

[0036] Specifically, when the demister 2 is used for a long time and a large amount of liquid is contained in the collecting chamber 25, it is necessary to clean the liquid in the collecting chamber 25. Since the liquid output from the gas-liquid input pipe 11 is an oil-gas mixture, the liquid attached to the first demister plate 22 is oil. Since the oil has a certain degree of adhesion, in order to prevent the oil from adhering to the first demister plate 22 for a long time, in this embodiment, the cleaning mechanism 3 includes a first scraper 31, a second scraper 32 and a driving assembly 33. The second scraper 32 is connected to the first scraper 31. The first scraper 31 and the second scraper 32 are located at one end of the collecting chamber 25. The driving assembly 33 is used to clean the liquid. The component 33 is used to drive the first scraper 31 and the second scraper 32 to move horizontally along the length direction of the collecting chamber 25. The length direction of the collecting chamber 25 is consistent with the length direction of the first defogger plate 22. During actual use, the driving component 33 drives the first scraper 31 and the second scraper 32 to move synchronously, wherein the movement of the second scraper 32 can scrape the liquid on the surface of the first defogger plate 22 from it into the collecting chamber 25, and the movement of the first scraper 31 can discharge the liquid in the collecting chamber 25 from the other end thereof. An opening 14 is provided at the position corresponding to the other end of the collecting chamber 25 on the side of the shell 1, and the liquid is discharged from the opening 14.

[0037] In the above embodiment, the liquid on the first defogger plate 22 is scraped off by the movement of the second scraper 32. As the second scraper 32 continues to move, the liquid accumulates more and more on the scraping surface of the second scraper 32. When excessive liquid flows through the first defogger plate 22, since the gap between the limiting plate 24 and the first defogger plate 22 is small, it is difficult for the excessive liquid to completely pass through the gap into the collecting chamber 25. At this time, the liquid will overflow from the upper end of the limiting plate 24, and the overflowed liquid will flow along the limiting plate 24, and eventually liquid dripping will occur. Therefore, in another embodiment of the present invention, further, the lower end of the limiting plate 24 is rotatably connected to the first defogger plate 22, and the limiting plate 24 is driven to rotate at the bottom of the first defogger plate 22.

[0038] Specifically, in the above embodiment, it is mentioned that the gap between the limit plate 24 and the first defogger plate 22 is the liquid inlet of the collecting chamber 25. Therefore, in this embodiment, driving the upper end of the limit plate 24 to rotate toward the side away from the first defogger plate 22 will expand the gap between the limit plate 24 and the bottom of the first defogger plate 22, that is, expand the liquid inlet of the collecting chamber 25, so that when the second scraper 32 cleans the side of the first defogger plate 22, the expansion of the liquid inlet of the collecting chamber 25 can prevent liquid from overflowing from the limit plate 24, and after the cleaning mechanism 3 cleans, the limit plate 24 will also reset and rotate to the initial position, that is, form a smaller gap with the bottom of the first defogger plate 22 again, to prevent the limit plate 24 from remaining in the rotated state for a long time and affecting the flow of gas in the defogger channel 26.

[0039] In another embodiment of the present invention, further, the horizontal movement of the second scraper 32 drives the limiting plate 24 to rotate on the second defogger plate 23 .

[0040] Specifically, the second scraper 32 is provided with a trigger block 34 in the direction of movement. The trigger block 34 is a triangular structure and has a guide slope 35. The trigger block 34 and the limit plate 24 form a wedge-shaped fit. In this embodiment, the two sets of limit plates 24 are respectively a first plate 241 and a second plate 242, wherein the first plate 241 is rotatably connected to the second defogger plate 23, and the second plate 242 is fixedly connected to the second defogger plate 23. Figure 4 As shown, the first plate 241 is located on the right side of the second defogger plate 23, and the second plate 242 is located on the left side. The trigger block 34 and the first plate 241 form a wedge-shaped fit, and a torsion spring is also installed at the rotation connection between the first plate 241 and the second defogger plate 23. The torsion spring is used to reset the second plate 242 after rotation. In actual use, the first scraper 31 and the second scraper 32 are initially located on one side of the first defogger plate 22. When the driving assembly 33 drives the first scraper 31 and the second scraper 32 to move simultaneously, the first scraper 31 and the second scraper 32 are rotated. During the step movement, the trigger block 34 on the side of the second scraper 32 first contacts the second plate 242. As the second scraper 32 continues to move, the trigger block 34 and the second plate 242 form a wedge-shaped fit. The guide slope 35 on the trigger block 34 forces the upper end of the second plate 242 to rotate away from the first plate 241. Subsequently, the rotation of the second plate 242 increases the gap between the first plate 241 and the bottom of the first defogger plate 22, that is, the size of one of the liquid inlets of the collection chamber 25 is expanded.

[0041] Furthermore, the rotated first plate 241 is placed on a side of the adjacent first defogger plate 22 close to the first plate 241, as shown in FIG. Figure 6 and Figure 7 As shown, in this embodiment, the side of the first defogger plate 22 close to the first plate body 241 is referred to as the first side 221, and the side close to the second plate body 242 is referred to as the second side 222. The rotated first plate body 241 is placed on the second side 222 of the adjacent first defogger plate 22, and the second plate body 242 on the adjacent first defogger plate 22 is located below the rotated first plate body 241. Figure 5As shown, the shape of the second scraper 32 is consistent with the shape enclosed by the first side surface 221 of the first defogger plate 22, the second plate body 242 after rotation, and the second side surface 222 of the adjacent first defogger plate 22. Therefore, after the first plate body 241 rotates, when the scraper enters the defogger channel 26, the second scraper 32 can simultaneously contact the first side surface 221, the second plate body 242 and the second side surface 222 of the adjacent first defogger plate 22. Therefore, when the second scraper 32 moves to scrape the liquid from the first side surface 221 of the first defogger plate 22, it can also simultaneously scrape the liquid from the second side surface 222 of the adjacent first defogger plate 22, that is, under the action of multiple groups of second scrapers 32, the first side surface 221 of each first defogger plate 22 is 1 and the second side 22 can be effectively cleaned, and while scraping the liquid from the second side 222, because the first plate 241 is located between the first side 221 of the first demister plate 22 and the second side 222 of the adjacent first demister plate 22, the liquid scraped off from the second side 222 by the second scraper 32 will also fall on the first plate 241. After the rotation, the arrangement of the first plate 241 can also play a role of blocking the material, preventing the liquid on the second side 222 from dripping from the demister 2. Secondly, the first plate 241 after rotation is also in an inclined state. The first plate 241 in the inclined state can also guide the liquid falling from the second side 222 into the collecting chamber 25, that is, the first plate 241 also plays a role of guiding the liquid.

[0042] More specifically, because the rotated first plate 241 is placed on the second side surface 222 of the adjacent first defogger plate 22, the first plate 241 at this time blocks the bottom opening 14 of the defogger channel 26. That is to say, when the cleaning mechanism 3 performs cleaning work in the defogger channel 26, the gas rising from the shell 1 will not enter the defogger channel 26. In the embodiment, the cleaning mechanism 3 is provided with multiple groups, and each defogger channel 26 is provided with a corresponding cleaning mechanism 3. When cleaning the defogger 2, multiple cleaning mechanisms 3 can be started in batches, and the cleaning mechanisms 3 on both sides of the corresponding defogger channel 26 When one defogger plate 22 is cleaned, the defogger channel 26 will be closed, and the gas will enter the other defogger channels 26, so that the first defogger plate 22 can be cleaned without stopping the device. Because the second defogger plate 23 is smaller and is located at the opening 14 of the defogger channel 26, the gas will not collide with the second defogger plate 23, and the liquid will hardly adhere to the second defogger plate 23, so the second defogger plate 23 does not need to be cleaned. Moreover, when cleaning the two first defogger plates 22 on the two sides of the defogger 2, the first scraper 31 and the second scraper 32 can be adaptively changed in shape.

[0043] It should be noted that the drive component 33 may be a linear drive mechanism such as an electric push rod, a cylinder, etc. In this embodiment, the drive component 33 is preferably a screw assembly.

[0044] In another embodiment of the present invention, further, an opening 14 is provided on the side of the housing 1 , and a sealing plate 37 is provided in the opening 14 . The second scraper 32 can also drive the sealing plate 37 to move and open the opening 14 during the movement.

[0045] Specifically, openings 14 are provided on both opposite sides of the housing 1, a sealing plate 37 is located in one of the openings 14, and the first scraper 31 and the second scraper 32 are initially located in the other opening 14. A cleaning box 36 is fixedly installed on the side of the housing 1. The interior of the cleaning box 36 is hollow and communicates with the interior of the housing 1 through the opening 14. A telescopic rod 38 is installed inside the cleaning box 36. One end of the telescopic rod 38 is fixedly connected to the sealing plate 37, and the other end is fixedly connected to the inner wall of the cleaning box 36. A spring is installed inside the telescopic rod 38. It is composed of two sections of rod bodies, one of which is hollow inside, and one end of the other end of the rod body extends into the interior of one section of the rod body, and the spring is also installed inside one section of the rod body. This sleeve-type telescopic rod 38 is a prior art and is not described in detail. When the driving component 33 drives the first scraper 31 and the second scraper 32 to move synchronously, the two move in the demisting channel 26. When the end of the moving demisting channel 26 is reached, the trigger block 34 is located on the side of the second scraper 32 close to the moving direction, that is, the side close to the sealing plate 37, and the trigger block 3 4 is perpendicular to the length direction of the second scraper 32, so when the second scraper 32 moves to the end of the demisting channel 26, the end of the trigger block 34 will contact the sealing plate 37. As the second scraper 32 continues to move, the sealing plate 37 will be pushed to move synchronously. At this time, the telescopic rod 38 contracts, and the sealing plate 37 gradually separates from the side opening 14 of the shell 1 and gradually enters the cleaning box 36. Since the shape of the opening 14 and the shape of the sealing plate 37 are consistent with the combined shape of the first scraper 31 and the second scraper 32, After the sealing plate 37 is separated from the opening 14, the first scraper 31 and the second scraper 32 will enter the inside of the opening 14. At this time, the liquid scraped off the first defogger plate 22 by the first scraper 31 and the second scraper 32 will be pushed into the cleaning box 36 and discharged through the drain port at the bottom of the cleaning box 36. After the first scraper 31 and the second scraper 32 are reset and moved, the spring in the telescopic rod 38 drives it to reset and stretch, and the sealing plate 37 enters the opening 14 again, preventing the gas entering the defogger 2 from entering the cleaning box 36 from the opening 14.

[0046] In summary, in this embodiment, when the trigger block 34 follows the movement of the second scraper 32, it can not only drive the first plate body 241 to rotate through its own guide slope 35, but also use its own structure protruding from the surface of the second scraper 32 to open the opening 14 before the second scraper 32 enters the opening 14, so that the liquid scraped by the second scraper 32 can be discharged smoothly.

[0047] It should be noted that both the first scraper 31 and the second scraper 32 have a certain thickness. When both are extended into the opening 14, part of them are still located on the first plate body 241. It is not the second scraper 32 and the first plate body 241. Under the interference of the second scraper 32, the first plate body 241 will not be reset.

[0048] Furthermore, a nozzle 39 is installed inside the cleaning box 36, and the nozzle 39 is connected to an external water supply mechanism through a pipe. When the first scraper 31 and the second scraper 32 are extended into the opening 14, the side of the first scraper 31 and the second scraper 32 close to the sealing plate 37 is the side for scraping the liquid and extends into the cleaning box 36. At this time, the nozzle 39 is located above the side. The cleaning liquid sprayed by the nozzle 39 can flush the scraper surface, thereby preventing the liquid from accumulating on the surface of the first scraper 31 and the second scraper 32 for a long time.

[0049] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A high-frequency pulse cyclone separation device for oil and gas production, comprising a housing (1) and a demister (2), wherein the demister (2) is installed inside the housing (1), and is characterized in that: The demister (2) comprises a support frame (21), a first demister plate (22), a second demister plate (23) and a limiting plate (24); the first demister plate (22) and the second demister plate (23) are both connected to the inner wall of the shell (1) through the support frame (21); the limiting plate (24) is mounted on the second demister plate (23); a collecting chamber (25) is formed between the first demister plate (22), the second demister plate (23) and the limiting plate (24); the limiting plate (24) is located on both sides of the bottom of the first demister plate (22) and a gap is provided between the limiting plate (24) and the first demister plate (22); the gap is communicated with the collecting chamber (25).

2. The high-frequency pulse cyclone separation device for oil and gas extraction according to claim 1, characterized in that: The first demisting plate (22) is fixedly mounted on the bottom of the support frame (21), and both ends of the support frame (21) are fixedly connected to the inner wall of the shell (1). The first demisting plate (22) and the second demisting plate (23) are provided with multiple groups and are evenly distributed along the length direction of the support frame (21). Demisting channels (26) are formed between adjacent first demisting plates (22) and between adjacent second demisting plates (23).

3. The high-frequency pulse cyclone separation device for oil and gas extraction according to claim 1, characterized in that: A cleaning mechanism (3) is installed in the housing (1), and the cleaning mechanism (3) is used to clean the liquid in the collection chamber (25) and on the first demisting plate (22).

4. The high-frequency pulse cyclone separation device for oil and gas extraction according to claim 3 is characterized in that: The cleaning mechanism (3) comprises a first scraper (31), a second scraper (32) and a driving assembly (33); the second scraper (32) is connected to the first scraper (31); the first scraper (31) and the second scraper (32) are located at one end of the collecting chamber (25); and the driving assembly (33) is used to drive the first scraper (31) and the second scraper (32) to move horizontally along the length direction of the collecting chamber (25).

5. The high-frequency pulse cyclone separation device for oil and gas production according to claim 1, characterized in that: The lower end of the limiting plate (24) is rotatably connected to the first demister plate (22), and the limiting plate (24) is driven to rotate at the bottom of the first demister plate (22).

6. The high-frequency pulse cyclone separation device for oil and gas production according to claim 1, characterized in that: The limiting plate (24) comprises a first plate body (241) and a second plate body (242); the first plate body (241) is rotatably connected to the second demisting plate (23); and the second plate body (242) is fixedly connected to the second demisting plate (23).

7. The high-frequency pulse cyclone separation device for oil and gas production according to claim 4, characterized in that: A trigger block (34) is provided near the moving direction of the second scraper (32). The trigger block (34) is triangular in structure and has a guide slope (35). The trigger block (34) and the limiting plate (24) form a wedge-shaped fit.

8. The high-frequency pulse cyclone separation device for oil and gas extraction according to claim 6, characterized in that: The rotated first plate (241) rests on a side surface of the adjacent first demisting plate (22) close to the first plate (241).

9. The high-frequency pulse cyclone separation device for oil and gas extraction according to claim 1, characterized in that: An opening (14) is provided on the side of the housing (1), and a sealing plate (37) is provided in the opening (14). The second scraper (32) can also drive the sealing plate (37) to move and open the opening (14) during the movement process.

10. The high-frequency pulse cyclone separation device for oil and gas extraction according to claim 9, characterized in that: A cleaning box (36) is fixedly installed on the side of the shell (1). The interior of the cleaning box (36) is hollow and communicates with the interior of the shell (1) through the opening (14). A telescopic rod (38) is installed inside the cleaning box (36). One end of the telescopic rod (38) is fixedly connected to the sealing plate (37), and the other end is fixedly connected to the inner wall of the cleaning box (36). A spring is installed inside the telescopic rod (38).

Images