A vortex type oil well casing gas pressurization recovery device

Abstract

The application discloses a vortex type oil well casing gas pressurization recovery device and relates to the technical field of natural gas exploitation equipment. The device comprises a machine body and a vortex type compressor installed in the machine body. A pressurization cavity is arranged in the vortex type compressor. An air inlet and an oil outlet are formed in the pressurization cavity. A vortex disc capable of circular motion is arranged in the pressurization cavity. The vortex disc is used for repeatedly shielding and exposing the oil outlet during the circular motion. The device comprises two baffles which are hingedly arranged and are arranged in the oil outlet in a matched manner. Perforations are formed in the opposite sides of the two baffles. The two perforations are opposite to each other and form an oil outlet channel whose axis is overlapped with the central axis of the oil outlet. In the application, lubricating oil passes through the oil outlet channel. When the gas volume is sufficient, the two baffles are coplanar, the oil outlet is concentrated, and the oil volume is guaranteed. When the gas volume is reduced, the two baffles are relatively close to each other, the two sides of the oil outlet channel are close to each other, the oil outlet channel forms an elongated gap, the lubricating oil is sprayed to form a flat oil film, and the flat oil film is fully contacted with the air flow, thereby helping to disperse.

Description

Technical Field

[0001] This invention relates to the field of natural gas extraction equipment technology, specifically a vortex-type oil well casing gas pressurization and recovery device. Background Technology

[0002] During conventional oilfield development, a large amount of associated natural gas is extracted along with crude oil. For oil wells with low casing pressure, casing gas recovery has always been a weakness in oilfields. Our institute began developing a low-pressure oil well casing gas recovery device in 2024. After field tests and comparisons of several booster recovery devices, we finally determined that the scroll compressor is suitable for the current working conditions of Qinghai oilfield.

[0003] In the existing technology, when the scroll compressor is working, its internal moving disc makes a small-radius circumferential translation around the center of the stationary disc, the meshing sealing line spirals from the outside to the inside, and the volume of each crescent cavity continuously shrinks, thereby achieving forced compression of the gas. Because the amount of natural gas extracted is unstable, the supply of natural gas in the cavity varies.

[0004] When the natural gas content is relatively high, the gas pressure inside the cavity is high, the frictional resistance increases, and the temperature rises. When the natural gas content is low, the gas pressure inside the cavity is low, and the airflow speed is low.

[0005] During compressor operation, the rotating disc periodically blocks and opens the lubricating oil supply port. When the supply port is open, the lubricating oil is drawn into the compression chamber. When the natural gas supply is sufficient, the strong airflow can impact the lubricating oil, causing it to disperse quickly within the chamber. However, when the natural gas supply is insufficient, the airflow is weak and cannot effectively disperse the lubricating oil, causing it to accumulate locally and resulting in poor lubrication within the chamber. Summary of the Invention

[0006] The purpose of this invention is to provide a vortex-type oil well casing gas boosting and recovery device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides a vortex-type oil well casing gas boosting and recovery device, including a body and a vortex compressor installed inside the body. The vortex compressor has a boosting chamber, with an air inlet and an oil outlet respectively opened on the boosting chamber. A vortex disk capable of circular motion is provided inside the boosting chamber, used to repeatedly block and expose the oil outlet during the vortex disk's circular motion.

[0008] Two baffles are hinged together and fitted into the oil outlet with their outer contours. A through hole is opened on the opposite side of the two baffles. The two through holes are opposite to each other and form an oil outlet channel whose axis overlaps with the central axis of the oil outlet.

[0009] Two triggers are respectively located at the upper and lower ends of the oil outlet. Each trigger includes at least a rotatable rotating part and a pressure detection element. The two rotating parts rotate in opposite directions and are each connected to a baffle.

[0010] The pressure detection element controls the rotating part to rotate in the forward or reverse direction according to the air pressure in the pressurization chamber, so that the two baffles can move closer or further away from the oil outlet at the same time, causing the oil outlet channel to open or close.

[0011] Furthermore, it includes a hinge component disposed between two baffles. The hinge component includes at least two rotating shaft components. The vertical axes of the two rotating shaft components overlap and are spaced apart on the upper and lower sides of the oil outlet channel. Each of the two baffles is connected to one of the rotating shaft components on its opposite side. The rotating shaft components are connected to the rotating component.

[0012] Furthermore, the rotating shaft component also includes a first shaft cylinder and a second shaft cylinder, each connected to one of the baffles. The first shaft cylinder is close to the oil outlet channel, and the second shaft cylinder is connected to the rotating component. The vertical axes of the first shaft cylinder and the second shaft cylinder overlap.

[0013] The hinge also includes a shaft, which is inserted inside the first shaft cylinder and the second shaft cylinder. The shaft overlaps with its axis, one end of the shaft is connected to the inner wall of the oil outlet, and the other end protrudes into the oil outlet channel.

[0014] Furthermore, the inner walls on both sides of the oil outlet are symmetrically extended with arc plates, and an opening is provided between the two arc plates. When the two baffles swing relative to each other with the shaft as the fulcrum, the opposite side of the two baffles slides against the inner arc surface of the arc plate.

[0015] Furthermore, the two baffles include a first baffle and a second baffle, the width of the first baffle is smaller than that of the second baffle, the first baffle corresponds to the air inlet, and the second baffle corresponds to the inside of the pressurization chamber;

[0016] A first thickened plate and a second thickened plate are installed on the inner wall of one side of the oil outlet. The second thickened plate is set to fit against one of the arc plates, so that when the first baffle swings with the shaft as the fulcrum, its side wall fits against the inner arc surface of the second thickened plate, and the swing diameter of the first baffle is smaller than the swing diameter of the second baffle.

[0017] Furthermore, both the first and second baffles are equipped with arc-shaped plates on their sidewalls. The curvature of the arc-shaped plates is adapted to the swing trajectory of the baffles. When the baffles swing, the two arc-shaped plates respectively fit against the inner arc surfaces of the arc plate and the second thickened plate. When the two baffles are in a coplanar state, the two arc-shaped plates are staggered in the direction of the oil outlet axis.

[0018] Furthermore, a fixing plate is installed on the inner bottom wall and the inner top wall of the oil outlet. The fixing plate has two arc-shaped grooves at one end corresponding to the two arc-shaped plates. The arc-shaped grooves are adapted to the swing trajectory of the arc-shaped plates. A slider is installed on the top and bottom of the arc-shaped plates. The slider is slidably engaged with the arc-shaped groove.

[0019] Furthermore, the booster chamber has two cavities located at the bottom and top of the oil outlet, respectively. These cavities communicate with the booster chamber, and a trigger element is installed within each cavity. The trigger element also includes...

[0020] The housing is installed in the cavity. The housing has a first sealing cavity and a second sealing cavity. The first sealing cavity and the second sealing cavity are connected in a partial area. The first sealing cavity and the second sealing cavity are connected through the connection area. A vent is opened on one side of the housing and communicates with the second sealing cavity. The diameter of the vent is smaller than the diameter of the second sealing cavity. One end of the second shaft extends through the fixed plate and the oil outlet into the first sealing cavity of the housing.

[0021] The rotating component includes a gear, and one end of the second shaft cylinder located inside the first sealed cavity is connected to one end of the gear;

[0022] The pressure detection element also includes a sealing piston, which is slidably sealed in the second sealing cavity. A sliding rod is connected to the end of the sealing piston away from the vent. The sliding rod is slidably connected to the second sealing cavity. Multiple teeth are evenly spaced on one side of the sliding rod. The gears mesh with the teeth. The meshing area of ​​the gears and teeth is located in the connecting area between the first sealing cavity and the second sealing cavity. A gap is left between the sealing piston and the teeth.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In this invention, lubricating oil passes through the oil outlet channel. When the air volume is sufficient, the two baffles are coplanar, and the oil outlet is concentrated to ensure the oil volume. When the air volume decreases, the two baffles move closer to each other, so that the two sides of the oil outlet channel move closer together, and the oil outlet channel forms a narrow slit. The lubricating oil is sprayed out to form a flat oil film, which fully contacts the intake airflow and helps to disperse.

[0025] 2. In this invention, the width of the first baffle is smaller than that of the second baffle, and the diameter of its swing trajectory is also smaller. The first baffle is shorter, which allows the airflow to be smoother and directly impact the wide surface of the oil film, thus improving the atomization effect. The second baffle is longer, which can hold the lubricating oil and make it form a continuous and uniform flat oil film before the outlet, avoiding the agglomeration into droplets or oil columns. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the appearance of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the pressurization chamber in this invention;

[0029] Figure 4This is a schematic diagram of the connection structure between the baffle and the oil outlet channel in this invention;

[0030] Figure 5 This is a schematic diagram of the connection structure between the baffle and the rotating shaft in this invention;

[0031] Figure 6 This is a schematic diagram of the connection structure between the first baffle and the second baffle in this invention;

[0032] Figure 7 This is a schematic diagram of the connection structure between the first shaft cylinder and the second shaft cylinder in this invention;

[0033] Figure 8 This is a schematic diagram of the connection structure between the baffle and the arc-shaped plate in this invention;

[0034] Figure 9 This is a schematic diagram of the connection structure between the arc-shaped plate and the through-hole in this invention;

[0035] Figure 10 This is a schematic diagram of the connection structure between the fixed disk and the arc-shaped slide groove in this invention;

[0036] Figure 11 This is a schematic diagram of the connection structure between the sealing piston and the sliding rod in this invention;

[0037] Figure 12 This is a schematic diagram of the connection structure between the second shaft and the gear in this invention.

[0038] In the image: 1. Body;

[0039] 2. Scroll compressor; 3. Pressure chamber; 4. Air inlet; 5. Oil outlet; 6. Scroll plate;

[0040] 7. Baffle; 71. First baffle; 72. Second baffle;

[0041] 8. Oil outlet channel;

[0042] 9. Trigger; 91. Housing; 92. First sealing cavity; 93. Second sealing cavity; 94. Vent; 95. Gear; 96. Sealing piston; 97. Sliding rod; 98. Teeth;

[0043] 10. Hinge component; 101. Rotating shaft component; 1011. First shaft sleeve; 1012. Second shaft sleeve; 102. Shaft rod;

[0044] 11. Arc plate; 12. Through opening; 13. First thickened plate; 14. Second thickened plate; 15. Arc-shaped plate; 16. Fixed plate; 17. Arc-shaped groove; 18. Slider; 19. Cavity. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] This invention provides a technical solution:

[0047] See Figures 1-12 As shown, a vortex-type oil well casing gas booster and recovery device includes a body 1 and a vortex compressor 2 installed inside the body 1. The vortex compressor 2 has a booster chamber 3, with an air inlet 4 and an oil outlet 5 respectively. The booster chamber 3 has a vortex disk 6 that can rotate in a circular motion, used to repeatedly block and expose the oil outlet 5 during its circular motion.

[0048] Two baffles 7 are hinged to each other and their outer contours fit into the oil outlet 5. A through hole is opened on the opposite side of the two baffles 7. The two through holes are opposite to each other and form an oil outlet channel 8 whose axis overlaps with the central axis of the oil outlet 5.

[0049] Two triggers 9 are respectively located at the upper and lower ends of the oil outlet 5. Each trigger 9 includes at least a rotatable rotating part and a pressure detection element. The two rotating parts rotate in opposite directions and are each connected to a baffle 7.

[0050] The pressure detection element controls the rotating part to rotate in the forward or reverse direction according to the air pressure in the pressurization chamber 3, so that the two baffles 7 can move closer or further away from the oil outlet in the same direction, causing the oil outlet channel 8 to open or close.

[0051] The air inlet is connected to the air inlet pipe. After passing through the gas-liquid separator and filter, impurities are filtered out and the gas enters the system through the one-way valve. The air inlet is also equipped with a pressure sensor to detect the air inlet pressure. The scroll compressor 2 is turned on and off according to the air inlet pressure. The gas enters the scroll compressor 2 for compression and pressurization. During the process, a throttling orifice is provided for flow regulation. A temperature sensor monitors the gas temperature and a pressure transmitter detects the pressure in real time.

[0052] The compressed gas enters the oil-gas separator to separate the entrained oil, and then is further purified by the oil separator. The minimum pressure valve maintains the minimum system pressure to ensure stable operation. The gas is cooled by the cooling fan and cooling air fan. The system is equipped with a safety valve to prevent overpressure. The manual drain valve is used to periodically discharge accumulated liquid or impurities. The purified gas is finally filtered through the oil filter and output through the exhaust port. The ball valve is used for system shut-off or regulation to achieve flexible process control.

[0053] The scroll compressor 2 is fixed inside the body 1. After the scroll compressor 2 is started, the scroll plate 6 installed inside the pressure chamber 3 moves in a circular motion, generating negative pressure by continuously compressing the space, so that the natural gas in the pipeline is drawn into the pressure chamber 3 and then compressed. The natural gas enters the pressure chamber 3 through the air inlet 4. The continuously rotating scroll plate 6 will continuously cover and expose the oil outlet 5. When the oil outlet 5 is exposed, the lubricating oil will be drawn into the pressure chamber 3. The scroll compressor 2 is equipped with a storage tank for storing lubricating oil. The storage tank is connected to the oil outlet 5, so that the lubricating oil can pass through the oil outlet 5 and enter the pressure chamber 3.

[0054] When the vortex disk 6 covers the oil outlet 5, the process of lubricating oil being drawn into the pressurization chamber 3 is interrupted. When the natural gas content in the pressurization chamber 3 is relatively high, the gas pressure in the pressurization chamber 3 is high. At the same time, when the natural gas enters from the inlet 4, it will also impact the lubricating oil coming out from the oil outlet 5. At this time, the lubricating oil is easily dispersed and torn by the gas, and fills the pressurization chamber 3 more quickly.

[0055] When the natural gas content is low, the lubricating oil cannot be effectively dispersed by the gas after leaving the oil outlet, resulting in slow dispersion and low lubrication efficiency.

[0056] Two baffles 7 seal the oil outlet 5, allowing lubricating oil to pass only through the oil outlet channel 8. Figure 6 As can be seen, the oil outlet channel 8 is circular in shape. When the pressure detection element detects that the natural gas content in the booster chamber 3 is sufficient, the two baffles 7 are in a horizontal state, just like... Figure 6 In this state, the lubricating oil flowing through the oil outlet channel 8 is relatively concentrated, ensuring sufficient oil supply. Throttling is not necessary because higher gas pressure results in greater friction and higher heat generation, thus consuming lubricating oil faster. Simultaneously, with sufficient natural gas, the lubricating oil can be better dispersed.

[0057] When the pressure detection element detects that the natural gas content in the pressurization chamber 3 is gradually decreasing, it drives the two rotating parts to rotate synchronously in opposite directions. Each of the two rotating parts drives a baffle 7 to swing, causing the two baffles 7 to move closer together towards the outlet of the oil port 5. Figure 6 From this perspective, the left baffle 7 swings to the right, and the right baffle 7 swings to the left.

[0058] As the two baffles 7 come closer together, the left and right sides of the oil outlet channel 8 also begin to come closer together, disrupting the circular shape of the oil outlet channel 8 and forming a vertical, narrow slit. The lubricating oil is forced to spray out from this narrow slit, forming a vertically flat oil film. The air inlet 4 corresponds to the side of the oil outlet 5, so the gas entering from the air inlet 4 corresponds to the wide side of the oil film, increasing the contact area with the airflow and thus helping the lubricating oil to disperse.

[0059] See Figures 4-7The device includes a hinge 10 disposed between two baffles 7. The hinge 10 includes at least two rotating shafts 101. The vertical axes of the two rotating shafts 101 overlap and are spaced apart on the upper and lower sides of the oil outlet channel 8. Each of the two baffles 7 is connected to one of the rotating shafts 101 on the opposite side. The rotating shafts 101 are connected to the rotating component.

[0060] The rotating shaft 101 above the oil outlet channel 8 is connected to one of the baffles, and the rotating shaft 101 below the oil outlet channel 8 is connected to the other baffle 7. In this way, when the two rotating parts rotate, the rotating shaft 101 can be driven to rotate, thereby causing the baffle 7 to rotate and move closer or further apart.

[0061] See Figure 7 The rotating shaft 101 also includes a first shaft cylinder 1011 and a second shaft cylinder 1012, each connected to one of the baffles 7. The first shaft cylinder 1011 is close to the oil outlet channel 8, and the second shaft cylinder 1012 is connected to the rotating component. The vertical axes of the first shaft cylinder 1011 and the second shaft cylinder 1012 overlap.

[0062] The hinge 10 also includes a shaft 102, which is inserted inside the first shaft cylinder 1011 and the second shaft cylinder 1012. The shaft 102 overlaps with its axis, one end of the shaft 102 is connected to the inner wall of the oil outlet 5, and the other end protrudes into the oil outlet channel 8.

[0063] Both the first shaft cylinder 1011 and the second shaft cylinder 1012 are rotatably connected to the outer wall of the shaft 102. The rotating component drives the second shaft cylinder 1012 to rotate along the shaft 102, thereby causing the baffle 7 to swing around the shaft 102 as the origin.

[0064] See Figures 8-9 The inner walls of the oil outlet 5 are symmetrically extended with arc plates 11, and an opening 12 is provided between the two arc plates 11. When the two baffles 7 swing relative to each other with the shaft 102 as the fulcrum, the opposite side of the two baffles 7 slides against the inner arc surface of the arc plate 11.

[0065] The inward curvature of the arc plate 11 matches the swing trajectory of the baffle 7, allowing the baffle 7 to slide along the inner arc surface of the arc plate 11 during swing. After passing through the baffle 7, the lubricating oil is sprayed out through the outlet 12. The arc plate 11 blocks part of the swing trajectory of the baffle 7, so that the two baffles 7 will not immediately expose a gap between themselves and the side wall of the oil outlet 5 after swinging, thereby preventing lubricating oil leakage.

[0066] See Figures 7-9The two baffles 7 include a first baffle 71 and a second baffle 72 respectively. The width of the first baffle 71 is smaller than that of the second baffle 72. The first baffle 71 corresponds to the air inlet 4, and the second baffle 72 corresponds to the inside of the booster chamber 3. The upper second shaft cylinder 1012 is fixedly connected to the side wall of the first baffle 71, and the lower second shaft cylinder 1012 is fixedly connected to the side wall of the second baffle 72. The upper first shaft cylinder 1011 is fixedly connected to the side wall of the second baffle 72, and the lower first shaft cylinder 1011 is fixedly connected to the side wall of the first baffle 71.

[0067] A first thickened plate 13 and a second thickened plate 14 are fixedly installed on the inner wall of one side of the oil outlet 5. The second thickened plate 14 is set to fit against one of the arc plates 11, so that when the first baffle 71 swings with the shaft 102 as the fulcrum, its side wall fits against the inner arc surface of the second thickened plate 14, and the swing diameter of the first baffle 71 is smaller than the swing diameter of the second baffle 72.

[0068] Since the width of the first baffle 71 is smaller than the width of the second baffle 72, the diameter of the circular motion trajectory of the first baffle 71 is also smaller than that of the second baffle 72. The function of the first thickened plate 13 and the second thickened plate 14 is to thicken the inner wall of one side of the oil outlet 5, so that when the first baffle 71 swings, its outer wall can also fit with the inner wall of the second thickened plate 14 and the first thickened plate 13, so as to prevent excessive leakage of lubricating oil and allow the lubricating oil to pass through the oil outlet channel 8 as much as possible.

[0069] Since the airflow is intended to disperse the oil film, the first baffle 71 corresponding to the air inlet 4 is shorter, allowing for smoother airflow impact and more direct impact on the flat, wide surface of the lubricating oil, thus improving the atomization effect. The second baffle 72 is extended further, which can hold the oil firmly and force the lubricating oil to form a continuous and uniform flat state before the outlet, preventing the lubricating oil from condensing into droplets or becoming columnar at the outlet.

[0070] See Figures 7-9 Both the first baffle 71 and the second baffle 72 have arc-shaped plates 15 fixedly installed on their side walls. The curvature of the arc-shaped plates 15 is adapted to the swing trajectory of the baffle 7. When the baffle 7 swings, the two arc-shaped plates 15 respectively fit the inner arc surfaces of the arc plate 11 and the second thickened plate 14. When the two baffles 7 are in a coplanar state, the two arc-shaped plates 15 are staggered in the axial direction of the oil outlet 5.

[0071] Because after the first baffle 71 and the second baffle 72 separate from the arc plate 11 and enter the through-hole 12, gaps will also appear between the first baffle 71 and the second baffle 72, as well as between the baffle 7 and the through-hole 12, causing oil to spill out. Through the continuous contact between the arc plate 15 and the arc plate 11, the closing distance between the first baffle 71 and the second baffle 72 can be further narrowed.

[0072] look Figure 9In the middle, the outer arc surface of the right arc plate 15 is in contact with the inner arc surface of the arc plate 11, and the outer arc surface of the left arc plate 15 is in contact with the inner arc surface of the second thickened plate 14. When the first baffle 71 and the second baffle 72 are away from the inner walls on both sides of the opening 12, the two arc plates 15 are still in contact with the second thickened plate 14 and the arc plate 11 respectively.

[0073] See Figures 5-10 The inner bottom wall and inner top wall of the oil outlet 5 are both fixedly installed with a fixed plate 16. The fixed plate 16 has two arc-shaped grooves 17 at one end of the two arc-shaped plates 15. The arc-shaped grooves 17 are adapted to the swing trajectory of the arc-shaped plates 15. The top and bottom of the arc-shaped plates 15 are both fixedly installed with sliders 18, and the sliders 18 are slidably connected to the arc-shaped grooves 17.

[0074] The inner arc surfaces of the two arc-shaped slide grooves 17 on the fixed plate 16 are opposite each other. The diameter of one arc-shaped slide groove 17 is smaller than the diameter of the other arc-shaped slide groove 17. The two arc-shaped slide grooves 17 are respectively adapted to the first baffle 71 and the second baffle 72 with different widths. When the arc-shaped plate 15 swings with the baffle 7, the slider 18 slides along the arc-shaped slide groove 17 at the same time, providing support and better stability for the arc-shaped plate 15.

[0075] The bottom of the second thickened plate 14 is in close contact with the top of the lower fixing plate 16, and the top of the second thickened plate 14 is in close contact with the bottom of the upper fixing plate 16.

[0076] See Figures 4-12 The booster chamber 3 has two cavities 19, located at the bottom and top of the oil outlet 5 respectively. The cavities 19 are connected to the booster chamber 3. The trigger element 9 is installed in the cavity 19. The trigger element 9 also includes...

[0077] A housing 91 is fixedly installed in the cavity 19. The housing 91 has a first sealing cavity 92 and a second sealing cavity 93. The first sealing cavity 92 and the second sealing cavity 93 are connected in a partial area. The first sealing cavity 92 and the second sealing cavity 93 are connected through the connection area. A vent 94 communicating with the second sealing cavity 93 is opened on one side of the housing 91. The diameter of the vent 94 is smaller than the diameter of the second sealing cavity 93. One end of the second shaft cylinder 1012 passes through the fixed plate 16 and the oil outlet 5 and extends into the first sealing cavity 92 of the housing 91.

[0078] The rotating component includes a gear 95, and one end of the second shaft cylinder 1012 located in the first sealing cavity 92 is fixedly connected to one end of the gear 95.

[0079] The pressure detection element also includes a sealing piston 96, which is slidably sealed within the second sealing cavity 93. A sliding rod 97 is fixedly connected to one end of the sealing piston 96 away from the vent 94. The sliding rod 97 is slidably connected to the second sealing cavity 93. Multiple teeth 98 are fixedly installed at equal intervals on one side of the sliding rod 97. A gear 95 meshes with the teeth 98. The meshing area of ​​the gear 95 and the teeth 98 is located in the connecting area between the first sealing cavity 92 and the second sealing cavity 93. A gap is left between the sealing piston 96 and the teeth 98.

[0080] One end of the shaft 102 is fixedly connected to the inner bottom wall of the first sealing cavity 92. The second shaft cylinder 1012 passes through the fixed plate 16, the oil outlet 5, and the housing 91. Its contact surfaces with the fixed plate 16, the oil outlet 5, and the housing 91 are all rotatably connected. When the natural gas content in the pressurization cavity 3 is low, the gas pressure is low, which will generate an adsorption force on the sealing piston 96, causing the sealing piston 96 to slide towards the vent 94 until the sealing piston 96 contacts the vent 94 and can no longer slide.

[0081] The vent 94 is connected to the pressurization chamber 3. When the sealing piston 96 moves, it drives the sliding rod 97 to slide along the second sealing chamber 93. When the sliding rod 97 moves, it drives multiple teeth 98 to move. The teeth 98 then drive the gear 95 that meshes with it to rotate. The rotation of the gear 95 drives the second shaft cylinder 1012 to rotate, which in turn drives the baffle 7 to swing, so that the two baffles 7 move closer to each other and the oil outlet gap becomes a vertically flat state.

[0082] When the natural gas content in the booster chamber 3 is sufficient, the gas pressure in the booster chamber 3 is high, which will cause the sealing piston 96 to move back into the second sealing chamber 93 until the end of the sliding rod 97 away from the sealing piston 96 touches the end of the second sealing chamber 93. Then the sealing piston 96 will no longer be able to move back. At this time, the gear 95 and the second shaft cylinder 1012 will also rotate, so that the two baffles 7 return to the parallel state and the oil outlet channel 8 returns to a circular shape.

Claims

1. A vortex-type oil well casing gas boosting and recovery device, comprising a body (1) and a vortex compressor (2) installed in the body (1), wherein the vortex compressor (2) is provided with a boosting chamber (3), and an air inlet (4) and an oil outlet (5) are respectively opened on the boosting chamber (3), and a vortex disk (6) capable of circular motion is provided in the boosting chamber (3) for repeatedly blocking and exposing the oil outlet (5) when the vortex disk (6) moves in a circular motion, characterized in that, include, Two baffles (7) are hinged together and their outer contours fit into the oil outlet (5). A through hole is opened on the opposite side of the two baffles (7). The two through holes are opposite to each other and form an oil outlet channel (8) whose axis overlaps with the central axis of the oil outlet (5). Two triggers (9) are respectively located at the upper and lower ends of the oil outlet (5). Each trigger (9) includes at least a rotatable rotating part and a pressure detection element. The two rotating parts rotate in opposite directions and are each connected to a baffle (7). The pressure detection element controls the rotating part to rotate in the forward or reverse direction according to the air pressure in the booster chamber (3), so that the two baffles (7) can move closer or further away from the outlet of the oil outlet at the same time, so that the oil outlet channel (8) opens or contracts.

2. The vortex-type oil well casing gas booster and recovery device as described in claim 1, characterized in that: Includes a hinge (10) disposed between two baffles (7). The hinge (10) includes at least two rotating shafts (101). The vertical axes of the two rotating shafts (101) overlap and are spaced apart on the upper and lower sides of the oil outlet channel (8). Each side of the two baffles (7) is connected to one of the rotating shafts (101). The rotating shafts (101) are connected to the rotating component.

3. The vortex-type oil well casing gas booster and recovery device as described in claim 2, characterized in that: The rotating shaft (101) also includes a first shaft cylinder (1011) and a second shaft cylinder (1012), each connected to one of the baffles (7). The first shaft cylinder (1011) is close to the oil outlet channel (8), and the second shaft cylinder (1012) is connected to the rotating component. The vertical axes of the first shaft cylinder (1011) and the second shaft cylinder (1012) overlap. The hinge (10) also includes a shaft (102), which is inserted inside the first shaft cylinder (1011) and the second shaft cylinder (1012). The shaft (102) overlaps with its axis, one end of the shaft (102) is connected to the inner wall of the oil outlet (5), and the other end protrudes into the oil outlet channel (8).

4. The vortex-type oil well casing gas booster and recovery device as described in claim 3, characterized in that: The inner walls of the oil outlet (5) are symmetrically extended with arc plates (11), and a through-hole (12) is opened between the two arc plates (11). When the two baffles (7) swing relative to each other with the shaft (102) as the fulcrum, the opposite side of the two baffles (7) slides against the inner arc surface of the arc plate (11).

5. The vortex-type oil well casing gas booster and recovery device as described in claim 4, characterized in that: The two baffles (7) include a first baffle (71) and a second baffle (72) respectively. The width of the first baffle (71) is smaller than that of the second baffle (72). The first baffle (71) corresponds to the air inlet (4), and the second baffle (72) corresponds to the inside of the pressurization chamber (3). A first thickened plate (13) and a second thickened plate (14) are installed on the inner wall of one side of the oil outlet (5). The second thickened plate (14) is attached to one of the arc plates (11), so that when the first baffle (71) swings with the shaft (102) as the fulcrum, its side wall is attached to the inner arc surface of the second thickened plate (14), and the swing diameter of the first baffle (71) is smaller than the swing diameter of the second baffle (72).

6. The vortex-type oil well casing gas booster and recovery device as described in claim 5, characterized in that: Both the first baffle (71) and the second baffle (72) are equipped with arc-shaped plates (15) on their side walls. The curvature of the arc-shaped plates (15) is adapted to the swing trajectory of the baffle (7). When the baffle (7) swings, the two arc-shaped plates (15) respectively fit the inner arc surfaces of the arc plate (11) and the second thickened plate (14). When the two baffles (7) are in a coplanar state, the two arc-shaped plates (15) are staggered in the direction of the oil outlet (5) axis.

7. The vortex-type oil well casing gas booster and recovery device as described in claim 6, characterized in that: The inner bottom wall and inner top wall of the oil outlet (5) are both equipped with a fixed plate (16). The fixed plate (16) has two arc-shaped grooves (17) at one end of the two arc plates (15). The arc-shaped grooves (17) are adapted to the swing trajectory of the arc plates (15). The top and bottom of the arc plates (15) are equipped with sliders (18), and the sliders (18) are slidably connected to the arc-shaped grooves (17).

8. The vortex-type oil well casing gas booster and recovery device as described in claim 7, characterized in that: The pressurization chamber (3) has two cavities (19) located at the bottom and top of the oil outlet (5), respectively. The cavities (19) are connected to the pressurization chamber (3). A trigger (9) is installed inside the cavity (19). The trigger (9) also includes... The housing (91) installed in the cavity (19) has a first sealing cavity (92) and a second sealing cavity (93) inside the housing (91). The first sealing cavity (92) and the second sealing cavity (93) are connected in a local area. The first sealing cavity (92) and the second sealing cavity (93) are connected through the connection area. A vent (94) communicating with the second sealing cavity (93) is opened on one side of the housing (91). The diameter of the vent (94) is smaller than the diameter of the second sealing cavity (93). One end of the second shaft cylinder (1012) passes through the fixed plate (16) and the oil outlet (5) and extends into the first sealing cavity (92) of the housing (91). The rotating component includes a gear (95), and one end of the second shaft cylinder (1012) located in the first sealed cavity (92) is connected to one end of the gear (95); The pressure detection element also includes a sealing piston (96), which is slidably sealed in the second sealing cavity (93). A sliding rod (97) is connected to one end of the sealing piston (96) away from the vent (94). The sliding rod (97) is slidably connected to the second sealing cavity (93). Multiple teeth (98) are installed at equal intervals on one side of the sliding rod (97). The gear (95) meshes with the teeth (98). The meshing area of ​​the gear (95) and the teeth (98) is located in the communication area connecting the first sealing cavity (92) and the second sealing cavity (93). There is a gap between the sealing piston (96) and the teeth (98).

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