Hydraulic gas-liquid mixed transportation supercharging device

Abstract

The invention relates to the technical field of oil-gas mixed transportation, in particular to a hydraulic type gas-liquid mixed transportation supercharging device. Comprising a containing table, the containing table is fixedly connected with conveying shells which are distributed at intervals, driving parts are slidably connected into the conveying shells in a sealed mode, the conveying shells are fixedly connected with a first mounting frame, and the first mounting frame is rotationally connected with two sets of first rolling wheels which are distributed in an arc shape; all the first rolling wheels on the same first mounting frame are jointly provided with a driving shell, and the outer side and the inner side of the driving shell are fixedly connected with first driving blades evenly distributed in the circumferential direction and second driving blades evenly distributed in the circumferential direction correspondingly. In the crude oil conveying process, crude oil drives the driving shell, the first driving blade and the second driving blade to rotate, so that crude oil in other surrounding areas is promoted to circularly flow, the mud and sand layering degree in the crude oil is reduced, and the uneven stress degree in the driving piece moving process is reduced; meanwhile, the abrasion speed of the bottom inner wall of the conveying shell caused by bottom accumulated mud and sand is reduced.

Description

Technical Field

[0001] This invention relates to the field of oil and gas mixed transportation technology, and specifically to a hydraulic gas-liquid mixed transportation booster device. Background Technology

[0002] The hydraulic gas-liquid mixed-transport booster unit is a crude oil transportation device used at oilfield wellheads. Compared to commonly used booster units such as screw pumps, compressors, and centrifugal pumps, it features high wear resistance, high output pressure, large volume, and suitability for transporting crude oil with high gas and sand content. The hydraulic gas-liquid mixed-transport booster unit uses hydraulic power to drive an internal piston to reciprocate within the working cavity. Combined with the inlet and outlet systems and a check valve assembly, this continuously changes the volume of the working cavity, thus achieving the reciprocating action of drawing in and discharging crude oil. Because the quality of crude oil extracted from oilfields constantly changes (i.e., the content of natural gas, oil, wastewater, and sand in the crude oil changes with the progress of extraction), existing hydraulic gas-liquid mixed-transport booster units typically increase the inner diameter of the working cavity and slow down the movement speed of the internal piston to extend the unit's service life, without changing the... While improving crude oil discharge efficiency, the piston's movement speed and distance are reduced to alleviate wear and increase the service life of the piston's sealing components. However, during the reciprocating process of drawing in and discharging crude oil, the hydraulic gas-liquid mixed-transport booster device also draws in and discharges a large amount of natural gas and silt. This causes natural gas to accumulate in the upper part of the working cavity and silt to deposit in the lower part of the working cavity when the piston moves slowly. As a result, the resistance on the upper and lower sides of the piston is different during reciprocating movement (especially since the lower part of the piston usually needs to push some silt along with it). The wear on one side of the piston shaft is aggravated, and a large amount of silt accumulates at the piston, causing the silt to wear on the lower inner wall of the working cavity at a faster rate. This gradually reduces the sealing performance of the lower inner wall of the working cavity, making it difficult for the device to reach the designed service life. Summary of the Invention

[0003] In order to overcome the shortcomings of existing hydraulic gas-liquid mixed conveying booster devices, such as unbalanced working load and easy wear on the lower side due to mud and sand accumulation, this invention proposes a hydraulic gas-liquid mixed conveying booster device.

[0004] The technical solution of the present invention is: a hydraulic gas-liquid mixed transport and pressurization device, comprising a holding platform, a hydraulic system, an inlet pipe, an outlet pipe, and a conveying shell spaced apart, the holding platform being fixedly connected to the hydraulic system, an inlet pipe, an outlet pipe, and a conveying shell spaced apart, a driving component being slidably connected inside the conveying shell, the driving component dividing the conveying shell into several working cavities and two driving cavities, the hydraulic system being connected to both driving cavities, the inlet pipe and the outlet pipe being fixedly connected and connected to inlet connectors and outlet connectors of the same number as the working cavities, and the working cavities being fixedly connected and connected to the corresponding inlet connectors and outlet connectors, the conveying shell being fixedly connected to a first mounting frame on the side of the working cavity near the connected inlet connector, the first mounting frame being rotatably connected to two sets of arc-shaped first rollers, all the first rollers on the same first mounting frame being shared by a driving shell, the driving shell rotating around the axis of the working cavity, the outer and inner sides of the driving shell being fixedly connected to circumferentially uniformly distributed first driving blades and circumferentially uniformly distributed second driving blades, respectively.

[0005] Furthermore, the flow area inside the drive housing is greater than the flow area between the outer side of the drive housing and the conveying housing.

[0006] Furthermore, the first drive blade is made of elastic metal, and fixed beams are fixedly connected to the first drive blade in the direction away from the adjacent liquid inlet connector. The two adjacent fixed beams limit the bending direction of the adjacent first drive blades by mutually limiting each other.

[0007] Furthermore, there is a gap between the drive housing and the conveying housing, and a first annular filter screen is fixedly connected to the inner side of the drive housing. The first annular filter screen is used to prevent gravel from flowing to the first roller.

[0008] Furthermore, a guide filter is fixedly connected above the drive housing within the working cavity of the conveying shell. The guide filter is semi-circular. The liquid inlet connector communicates with the working cavity at a location between the guide filter and the circumferentially evenly distributed first drive blades within the working cavity. The liquid outlet connector communicates with the working cavity at a location on the side of the circumferentially evenly distributed first drive blades within the working cavity that is close to the adjacent guide filter.

[0009] Furthermore, the first mounting bracket is rotatably connected to a spaced-apart drive fan, the drive fan being located between an adjacent drive housing and an adjacent first annular filter, and the drive fan being located on the side of the first annular filter near its outer edge, the drive fan being fixedly connected to an adjacent first roller.

[0010] Furthermore, the drive unit has a second mounting bracket fixedly connected to one side near the working space. The second mounting bracket is rotatably connected to two sets of arc-shaped second rollers. All the second rollers on the same second mounting bracket are provided with a rotating shell. The rotating shell rotates around the axis of the working cavity. A first stirring blade with a uniform circumferential distribution is fixedly connected to the outer side of the rotating shell. A second stirring blade with a uniform circumferential distribution is fixedly connected to the rotating shell near its axis. The rotating shell is provided with a drive assembly for driving its own rotation.

[0011] Furthermore, both the first roller and the second roller are made of corrosion-resistant rubber.

[0012] Furthermore, the drive assembly includes a winding roller, which is rotatably connected to the adjacent rotating housing and a torsion spring is installed between them. The winding roller is wound with spaced steel wires, which penetrate the adjacent rotating housing and are fixedly connected to the drive housing in the same working cavity.

[0013] Furthermore, the driving member has a fixed filter screen fixedly connected to the working cavity, the rotating shell has a second annular filter screen fixedly connected to it, the fixed filter screen is coaxial with the adjacent second annular filter screen, the second stirring blade is located outside the adjacent second annular filter screen, there is a gap between the rotating shell and the driving member, the rotating shell is annular, and a third stirring blade is fixedly connected to the inner side of the rotating shell, the third stirring blade is located inside the adjacent second annular filter screen.

[0014] Compared with existing hydraulic gas-liquid mixed transport booster devices, the advantages of this invention are as follows: During the transport of crude oil, the crude oil drives the drive housing, the first drive blade and the second drive blade to rotate, thereby promoting the circulation of crude oil in other surrounding areas, reducing the degree of mud and sand stratification in the crude oil, reducing the degree of uneven force during the movement of the drive components, and reducing the wear rate of the bottom inner wall of the transport housing caused by the mud and sand accumulated at the bottom.

[0015] This invention drives the steel wire and the rotating shell to rotate in the same direction, thereby generating two liquid flows in different directions within the same working cavity. This improves the fluidity of the liquid around the driving component and increases the disorder of the liquid in the middle of the working cavity, thus further reducing the probability of crude oil stratification.

[0016] This invention places the drive housing and rotating housing inside the working cavity, and the power to drive the rotation of the drive housing comes from the flow of crude oil, reducing the device's dependence on external power and thus reducing the possibility of leakage. Even if the drive housing and rotating housing malfunction and reduce their working efficiency, the impact on the crude oil transportation process of this device will always be within an acceptable range. Therefore, this device only needs to be inspected and maintained during the set maintenance window, reducing the probability of unplanned downtime for maintenance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the first cavity and the second cavity of the present invention; Figure 3 This is a cross-sectional view of the delivery shell of the present invention; Figure 4 This is a three-dimensional structural diagram of the driving shell and rotating shell of the present invention; Figure 5 This is a cross-sectional view of the drive housing of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 For the present invention Figure 5 Enlarged view of point B in the middle; Figure 8 This is a cross-sectional view of the drive housing and the first annular filter screen of the present invention. Figure 9 This is a cross-sectional view of the driving component and rotating housing of the present invention.

[0018] Component names and numbers in the diagram: 1-Packing platform, 2-Hydraulic system, 101-Inlet pipe, 102-Drain pipe, 103-Inlet connector, 104-Drain connector, 3-Conveying shell, 301-First cavity, 302-Second cavity, 303-Third cavity, 304-Fourth cavity, 305-First hydraulic chamber, 306-Second hydraulic chamber, 4-Drive component, 5-First mounting bracket, 51-First roller, 6-Drive shell, 7-First drive blade, 71-Fixed beam, 8-Second drive blade, 9-First annular filter screen, 10-Guide filter screen, 11-Drive fan, 12-Second mounting bracket, 121-Second roller, 13-Rotating shell, 131-First stirring blade, 132-Second stirring blade, 133-Third stirring blade, 14-Winding roller, 141-Torsion spring, 15-Steel wire, 16-Fixed filter screen, 17-Second annular filter screen. Detailed Implementation

[0019] 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.

[0020] Example 1: This example discloses a hydraulic gas-liquid mixed transport booster device, which is mainly used to solve the defects of existing hydraulic gas-liquid mixed transport booster devices, such as unbalanced working load and easy wear on the lower side due to mud and sand accumulation.

[0021] A hydraulic gas-liquid mixed transport booster device, referenced Figures 1-6 and Figure 8 The system includes a holding platform 1, to which a hydraulic system 2, an inlet pipe 101, an outlet pipe 102, and several spaced-apart conveying shells 3 are fixedly connected. A driving component 4 is slidably connected within each conveying shell 3, dividing the conveying shell 3 into at least six cavities: a first cavity 301, a second cavity 302, a third cavity 303, a fourth cavity 304, a first hydraulic cavity 305, and a second hydraulic cavity 306. The first cavity 301, the second cavity 302, the third cavity 303, and the fourth cavity 304... The fourth cavity 304 is the working cavity, and the first hydraulic cavity 305 and the second hydraulic cavity 306 are the driving cavities. Both the first hydraulic cavity 305 and the second hydraulic cavity 306 are connected to the hydraulic system 2. The inlet pipe 101 is fixedly connected to and connected to several inlet connectors 103. The number of inlet connectors 103 is equal to the number of working cavities and corresponds one-to-one. The drain pipe 102 is fixedly connected to and connected to several drain connectors 104. The number of drain connectors 104 is equal to the number of working cavities and corresponds one-to-one. Both the inlet connector 103 and the outlet pipe 102 are equipped with a one-way valve group (the one-way valve group is an existing device and is not shown in detail in the figure). The working cavity is fixedly connected to and communicates with the corresponding inlet connector 103 and the corresponding outlet connector 104. Several first mounting brackets 5 located on the same ring are fixedly connected to the side of the conveying shell 3 near the connected inlet connector 103 in the working cavity. The first mounting bracket 5 is rotatably connected to two sets of arc-shaped distributed first rollers 51. All the first rollers 51 in the same working cavity are provided with a drive shell 6. The drive shell 6 is an annular shell and rotates around the axis of its working cavity. The axis of the drive shell 6 coincides with its rotation axis and the axis of the conveying shell 3. The inlet connector 103 is located above the adjacent drive shell 6, and the outlet connector 104 is located below the adjacent drive shell 6, biased towards the side of the drive shell 6 near the adjacent first mounting bracket 5. The outer side of the drive shell 6 is fixedly connected with a circumferentially evenly distributed first drive blade 7, and the inner side of the drive shell 6 is fixedly connected with a circumferentially evenly distributed second drive blade 8.

[0022] In the above scheme, valves are installed at the connection points between the hydraulic system 2, the inlet pipe 101, and the outlet pipe 102 and each delivery shell 3, so that individual delivery shells 3 can be disassembled and repaired without affecting the normal production of the oilfield. The tilt direction of the first drive blade 7 relative to the axis of the drive shell 6 is opposite to the tilt direction of the adjacent second drive blade 8 relative to the drive shell 6. Therefore, when the drive shell 6 rotates, the direction in which the first drive blade 7 pushes the surrounding crude oil to flow is opposite to the direction in which the second drive blade 8 pushes the surrounding crude oil to flow.

[0023] Furthermore, refer to Figures 3-6 and Figure 8 The flow area inside the drive housing 6 is larger than the flow area between the outer side of the drive housing 6 and the conveying housing 3. Therefore, when crude oil in the working cavity is discharged outward through the drain connector 104, the flow rate of crude oil from the inside of the drive housing 6 to the drain connector 104 is greater than the flow rate from the outer side of the drive housing 6 to the drain connector 104. The first drive blade 7 is made of elastic metal, so when the first drive blade 7 is impacted by the flow of crude oil, it can bend and deform to reduce its resistance to the flow of crude oil. The first drive blade 7 is fixedly connected with spaced fixed beams 71 in the direction away from the adjacent inlet connector 103. Two adjacent fixed beams 71 limit each other, restricting the bending direction of the adjacent first drive blades 7, so that the first drive blades 7 can only bend and deform in the direction of the adjacent liquid inlet joint 103 and the adjacent liquid outlet joint 104. There is a gap between the drive housing 6 and the conveying housing 3. The inner side of the drive housing 6 is fixed with a first annular filter screen 9. The diameter of the first annular filter screen 9 gradually increases from the direction close to the drive housing 6 to the direction away from the drive housing 6. The first mounting bracket 5 passes through the gap between the adjacent drive housing 6 and the adjacent first annular filter screen 9. The first annular filter screen 9 is used to prevent the sand and gravel from flowing to the first roller 51.

[0024] In the above scheme, when crude oil flows from the inlet connector 103 into the working cavity, the crude oil normally pushes the first drive blade 7 to drive the drive housing 6 to rotate. When the crude oil flows from the outside of the drive housing 6 to the outlet connector 104, the first drive blade 7 on the lower side of the drive housing 6 is bent and deformed by the impact of the crude oil flow. At this time, the force of the crude oil pushing the first drive blade 7 to drive the drive housing 6 to rotate is less than the force of the crude oil pushing the second drive blade 8 to drive the drive housing 6 to rotate.

[0025] Furthermore, refer to Figures 4-6 and Figure 8 A guide filter 10 is fixedly connected to the drive housing 6 above the conveyor housing 3 within the working cavity. The guide filter 10 is semi-circular and can be rotatably connected to the drive housing 6, or it can be left out of contact with the drive housing 6, with a gap between them. For ease of explanation, this embodiment adopts a scheme in which the drive housing 6 does not contact the adjacent guide filter 10. Refer to Figure 5 The liquid inlet connector 103 is connected to the working cavity between the guide filter 10 and the circumferentially evenly distributed first drive blades 7 in the working cavity. The liquid outlet connector 104 is connected to the working cavity on the side of the first drive blades 7 and the second drive blades 8 in the working cavity near the adjacent guide filter 10. The first mounting bracket 5 is rotatably connected to a plurality of drive fans 11 distributed at intervals. The drive fans 11 are located between the adjacent drive housing 6 and the adjacent first annular filter 9, and the drive fans 11 are located on the side of the first annular filter 9 near its outer edge. The drive fans 11 are fixedly connected to the adjacent first roller 51.

[0026] In the above scheme, the guide filter 10 is mainly used to guide the crude oil that has just entered the working cavity, causing the crude oil to flow towards the adjacent first drive blade 7, and driving the first drive blade 7 and drive housing 6 to rotate. In order to ensure that the connection between the liquid inlet connector 103 and the working cavity is strictly limited between the guide filter 10 and the circumferentially evenly distributed first drive blades 7, an additional bypass liquid inlet connector 103 can be used, thereby minimizing the diameter of the connection between the liquid inlet connector 103 and the working cavity without affecting the flow rate, thereby limiting the width of the drive housing 6, reducing the area occupied by the drive housing 6, and increasing the stroke of the drive component 4; when the drive housing 6 rotates, it drives the adjacent first roller 51 to rotate, and the drive fan 11 is driven to rotate together by the adjacent first roller 51. The drive fan 11 is used to push the surrounding crude oil to flow out of the first annular filter 9 between the drive housing 6 and the adjacent first annular filter 9 (refer to Figure 5 By creating a liquid flow in a specific direction, crude oil is prevented from flowing from the gap between the drive housing 6 and the adjacent first annular filter screen 9 to the space between the drive housing 6 and the adjacent first annular filter screen 9.

[0027] The working principle of the above scheme is as follows: When the staff uses this device to transport crude oil, the staff only needs to control the hydraulic system 2 to inject hydraulic oil into the first hydraulic chamber 305 and the second hydraulic chamber 306 in sequence, and control the drive component 4 to move back and forth in the conveying shell 3, so that the working chamber works together with the one-way valve group in each liquid inlet joint 103 and the one-way valve group in each liquid outlet joint 104 to continuously draw crude oil from the well through the liquid inlet pipe 101 and transport the crude oil to the designated location through the liquid outlet pipe 102.

[0028] The following detailed explanation of the crude oil extraction and transportation process is based on the first cavity 301 and its internal components (the operating principles of the components in other working cavities are the same as those in the first cavity 301, and therefore will not be listed individually): When the hydraulic system 2 controls the drive component 4 to move from left to right, the volume of the first cavity 301 gradually increases, and the first cavity 301 is under negative pressure. The one-way valve group in the inlet connector 103 opens, and the one-way valve group in the outlet connector 104 closes. The first cavity 301 extracts crude oil from the well through the inlet connector 103. When crude oil enters the first cavity 301 through the inlet connector 103, it flows to the right under the guidance of the guide filter 10 and the limiting effect of the drive housing 6. The first drive blade 7 bends to the right due to the impact of the crude oil. When the first drive blade 7 bends to the right to a near-vertical position, it is limited by the fixed beam 71 above it and cannot bend further to the right. At the same time, the guide filter 10 restricts the flow of mud and sand carried in the crude oil to the left. The crude oil impacts the first drive blade 7 and drives the first drive blade 7 and the drive housing 6 to rotate. The first roller 51 rotates together. At this time, the drive housing 6 drives the components on it to rotate clockwise. Figure 1 and Figure 5From a right-to-left perspective, when the first drive blade 7 on the drive housing 6 rotates, it pushes the crude oil on the front, rear and lower sides of the drive housing 6 to flow to the right. When the second drive blade 8 on the drive housing 6 rotates, it drives the crude oil to flow from right to left from the middle of the drive housing 6. The drive housing 6 and its components drive the crude oil in the first cavity 301 to circulate in a ring, thereby increasing the probability of natural gas, oil and silt mixing in the first cavity 301, thereby reducing the degree of crude oil stratification and making the resistance encountered by the drive component 4 during movement relatively uniform.

[0029] When the first roller 51 rotates along with the drive housing 6, the drive fan 11 is driven to rotate together by the adjacent first roller 51. The drive fan 11 pushes the surrounding crude oil to the left, so as to... Figure 5 and Figure 6 For example, when the drive fan 11 pushes the surrounding liquid to the left, because the first annular filter 9 is located on the left side of the drive housing 6, when the drive fan 11 pushes the surrounding crude oil to the left, the crude oil can only be replenished upwards by passing through the first annular filter 9 from the lower side of the drive fan 11. The crude oil pushed to the left by the drive fan 11 passes through the first annular filter 9 and flows to the left. Some of the crude oil is guided upwards by the first annular filter 9, passes between the drive housing 6 and the first annular filter 9, and passes through the guide filter 10 on the left side of the drive housing 6 to flow to the outside of the drive housing 6. Because the guide filter 10 reduces the flow area of ​​the surrounding crude oil, the flow resistance of the crude oil in the upper left side of the drive housing 6 is greater than that in the lower left side of the drive housing 6. At the same time, it is drawn in advance by the drive fan 11 and transported to the upper left side of the drive housing 6. The crude oil further increases the liquid pressure in the upper left side of the drive housing 6. Therefore, the liquid pressure in the upper left side of the drive housing 6 is greater than that in the lower left side of the drive housing 6. Most of the crude oil (especially the crude oil with a large amount of mud and sand) flows back to the right through the lower left side of the drive housing 6. The crude oil flowing back to the right through the upper left side of the drive housing 6 is filtered in advance by the first annular filter screen 9. It has a low mud and sand content and does not contain large gravel. Moreover, this part of the crude oil still needs to pass through the guide filter screen 10 to flow back to the right normally. Therefore, it is difficult for mud and sand to flow to the upper left side of the drive housing 6, and even more difficult to pass through the first annular filter screen 9 and the upper side of the drive housing 6 to enter the space between the first annular filter screen 9 and the drive housing 6, or enter the space between the guide filter screen 10 and the drive housing 6. Therefore, the probability of the first roller 51 and the drive housing 6 being stuck by mud and sand in this solution is extremely low.

[0030] When the hydraulic system 2 controls the drive component 4 to move from right to left, the volume of the first cavity 301 gradually decreases, the pressure inside the first cavity 301 increases, the one-way valve group in the inlet connector 103 closes, and the one-way valve group in the outlet connector 104 opens. The first cavity 301 pressurizes the crude oil into the outlet pipe 102 through the outlet connector 104. The crude oil is then transported to the designated collection location through the outlet pipe 102. There are two flow paths for the crude oil in the first cavity 301. One path is for the crude oil to flow through the outside of the drive housing 6 to the left side of the drive housing 6 and then enter the outlet connector 104. The other path is for the crude oil to flow through the middle of the drive housing 6 to the left side of the drive housing 6 and then flow downwards into the outlet connector 104. Because the flow area inside the drive housing 6 is larger than the flow area between the outside of the drive housing 6 and the conveying housing 3, a large amount of crude oil flows through the middle of the drive housing 6 to the left side of the drive housing 6. This portion of crude oil drives the second drive blade 8 to continue rotating the drive housing 6 clockwise. Figure 1 and Figure 5 From a right-to-left perspective, the drive housing 6 and its first drive blade 7 still exert a force on the crude oil outside the drive housing 6 to flow to the right. At this time, because the liquid pressure in the upper left part of the drive housing 6 is high, and the drain connector 104 is located in the lower left part of the drive housing 6, the liquid pressure in the lower left part of the drive housing 6 is significantly lower than the liquid pressure in the upper left part of the drive housing 6. Therefore, the crude oil in the upper part of the outer side of the drive housing 6 is less affected, while the crude oil in the lower part of the outer side of the drive housing 6 flows to the left due to the influence of the liquid pressure gradient. The crude oil in the middle and upper part of the outer side of the drive housing 6 is less affected by the liquid pressure gradient, but is greatly affected by the push of the first drive blade 7. Therefore, the crude oil in the middle and upper part of the outer side of the drive housing 6 continues to circulate to the right.

[0031] During the leftward flow of crude oil in the lower outer part of the drive housing 6, because the fixed beam 71 does not limit the leftward bending of the first drive blade 7, the first drive blade 7 on the lower side of the drive housing 6 is directly bent to the left by the pressure of the crude oil during rotation, thus reducing its resistance to the leftward flow of crude oil. After passing through this area, it returns to its original position under its own elastic force. However, even if the first drive blade 7 is unable to push the crude oil on the lower side of the drive housing 6 to flow to the right, it will still exert a force on the surrounding crude oil to rotate together, causing the mud and sand in the crude oil on the lower side of the drive housing 6 to disperse outward, reducing the accumulation of mud and sand at the bottom. The rotation of the drive housing 6 drives the lower part of the crude oil to rotate and flow, while the upper part of the crude oil flows back to the right, making the flow mode and path of the crude oil in the first cavity 301 more chaotic, reducing the probability of mud and sand stratification and accumulation in the crude oil during the discharge process.

[0032] If the natural gas content in the crude oil exceeds 10%, making it difficult for the natural gas to mix with the oil, the natural gas will naturally accumulate upwards. Therefore, it will only affect the action of the first drive blade 7 on the upper side of the drive housing 6 to push the surrounding crude oil to the right, and will not affect the action in other positions. Furthermore, since the inlet connector 103 is located on the upper side of the first cavity 301 and the outlet connector 104 is located on the lower side of the first cavity 301, the accumulation of natural gas will not affect the crude oil discharge, discharge, or the action of driving the drive housing 6 to rotate when the crude oil is discharged.

[0033] Example 2: Based on Example 1, it also includes the function of driving the crude oil circulation flow in the working cavity near the four drive components.

[0034] Furthermore, refer to Figure 4 , Figure 5 , Figure 7 and Figure 9 The drive unit 4 has a second mounting bracket 12 that is circumferentially evenly distributed on one side near the working space. The second mounting bracket 12 is rotatably connected to two sets of arc-shaped second rollers 121. All the second rollers 121 in the same working cavity are provided with a rotating shell 13. The rotating shell 13 rotates around the axis of the working cavity. The first roller 51 and the second roller 121 are both made of corrosion-resistant rubber, which further reduces the probability of the first roller 51 and the second roller 121 being stuck by mud and sand. The rotating shell 13 is coaxial with its rotation axis and the drive shell 6. The outer side of the rotating shell 13 is fixed with a first stirring blade 131 that is circumferentially evenly distributed. The rotating shell 13 is fixed with a second stirring blade 132 that is circumferentially evenly distributed near its axis. The rotating shell 13 is provided with a drive assembly for driving its own rotation.

[0035] In the above scheme, the first stirring blade 131 is used to push the surrounding crude oil to flow towards the adjacent drive shell 6 of the rotating shell 13, and the second stirring blade 132 is used to push the surrounding crude oil from the axis of the rotating shell 13 to the edge of the rotating shell 13. Therefore, when the rotating shell 13 and the drive shell 6 rotate in the same direction, the two push the surrounding crude oil to flow in opposite directions, which helps to promote further mixing of the surrounding crude oil.

[0036] Furthermore, refer to Figure 4 , Figure 5 , Figure 7 and Figure 9The drive assembly includes several circumferentially evenly distributed winding rollers 14, each rotatably connected to an adjacent rotating housing 13. A torsion spring 141 is installed between each winding roller 14 and the adjacent rotating housing 13. Multiple steel wires 15 are wound around each winding roller 14 at intervals. The steel wires 15 penetrate the adjacent rotating housing 13 and are fixedly connected to the drive housing 6 within the same working cavity. The steel wires 15 wound on the same winding roller 14 are in the same plane between the drive housing 6 and the rotating housing 13. A fixed filter screen 16 is fixedly connected to the drive component 4 within the working cavity. A second annular filter screen 17 is fixedly connected to the rotating housing 13. The fixed filter screen 16 and the adjacent second annular filter screen 17 are coaxial, and their maximum diameters are smaller than the drive component 4. The inner diameter of the moving shell 6 allows the fixed filter 16 and the second annular filter 17 to be inserted into the inner side of the driving shell 6, thereby increasing the space utilization of the device and reducing the amount of crude oil remaining in the first cavity 301 during the reciprocating movement of the driving component 4. The fixed filter 16 and the adjacent second annular filter 17 can be rotatably connected or have a gap. For ease of description, this embodiment adopts a design with a gap. The second stirring blade 132 is located outside the adjacent second annular filter 17. There is a gap between the rotating shell 13 and the driving component 4. The rotating shell 13 is annular, and a third stirring blade 133 is fixedly connected to the inner side of the rotating shell 13. The third stirring blade 133 is located inside the adjacent second annular filter 17.

[0037] In the above scheme, the drive shell 6 pulls the rotating shell 13 to rotate in the same direction through the steel wire 15, and the steel wire 15 is kept taut by the torsion spring 141. During the rotation, the third stirring blade 133 drives the crude oil in the middle of the rotating shell 13 to pass through the rotating shell 13 and enter the gap between the rotating shell 13 and the drive component 4, thereby cooperating with the fixed filter screen 16 and the second annular filter screen 17 to extract crude oil with low mud and sand content.

[0038] The working principle of the above scheme is as follows: The following only takes the first cavity 301 and its internal components as an example (the operating principle of the components in other working cavities is the same as that of the components in the first cavity 301, so they will not be listed one by one): During the rotation of the drive shell 6, the rotating shell 13 is pulled clockwise by the steel wire 15. Figure 1 and Figure 5From a right-to-left perspective, the torsion spring 141 drives the adjacent winding roller 14 to rotate, keeping the steel wire 15 taut at all times. The first stirring blade 131 drives the surrounding crude oil (i.e., the crude oil outside the rotating shell 13) to flow to the left, the second stirring blade 132 drives the surrounding crude oil (i.e., the crude oil on the left side of the rotating shell 13) to flow to the outside of the rotating shell 13, and the third stirring blade 133 drives the crude oil inside the rotating shell 13 to flow from left to right. At this time, there are two crude oil flow paths at the rotating shell 13. One is that the crude oil at the left axis position of the rotating shell 13 flows upward first and then to the left. The other is that the crude oil at the left axis position of the rotating shell 13 passes through the fixed filter screen 16 and the second annular filter screen 17 first, and then enters the middle of the rotating shell 13. At this time, most of the mud and sand and large particles of gravel in the crude oil are present. The crude oil, having already been filtered out by the fixed filter screen 16 and the second annular filter screen 17, enters the gap between the rotating shell 13 and the driving component 4, and gradually flows to the outside of the rotating shell 13. Finally, it flows to the left from the outside of the rotating shell 13. Therefore, it is difficult for the crude oil on the outside of the rotating shell 13 to flow directly into the gap between the rotating shell 13 and the driving component 4, thereby reducing the probability of mud and sand getting stuck in the rotating shell 13. As the crude oil flows to the left on the outside of the rotating shell 13, it drives the surrounding crude oil to flow, promotes the mixing of mud and sand in the surrounding oil, reduces the probability of crude oil stratification at the connection between the driving component 4 and the conveying shell 3, reduces the amount of mud and sand accumulated on the left side of the driving component 4 during its movement, and further reduces the uneven force on the driving component 4. At the same time, it reduces the degree of wear on the lower inner wall of the conveying shell 3 when the accumulated mud and sand are forcibly pushed.

[0039] Because the drive shell 6 and the rotating shell 13 both rotate in the same direction within the same working cavity, and neither of them changes their rotation direction, the direction of the surrounding crude oil flow driven by the two is always opposite, which further increases the oil mixing in the middle of the working cavity and reduces the degree of mud and sand accumulation and stratification in the crude oil.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A hydraulic gas-liquid mixed transport and booster device, characterized in that: The system includes a holding platform (1), which is fixedly connected to a hydraulic system (2), an inlet pipe (101), an outlet pipe (102), and spaced-apart conveying shells (3). A drive unit (4) is slidably connected inside the conveying shells (3). The drive unit (4) divides the conveying shells (3) into several working cavities and two drive cavities. The hydraulic system (2) is connected to both drive cavities. The inlet pipe (101) and the outlet pipe (102) are respectively fixedly connected and connected to inlet connectors (103) and outlet connectors (104) of the same number as the working cavities. The working cavities are connected to the corresponding... The inlet connector (103) and the corresponding outlet connector (104) are fixed and connected. The conveying shell (3) is fixed with a first mounting bracket (5) on one side of the inlet connector (103) in the working cavity. The first mounting bracket (5) is rotatably connected with two sets of arc-shaped first rollers (51). All the first rollers (51) on the same first mounting bracket (5) are provided with a drive shell (6). The drive shell (6) rotates around the axis of the working cavity. The outer and inner sides of the drive shell (6) are respectively fixed with a circumferentially evenly distributed first drive blade (7) and a circumferentially evenly distributed second drive blade (8).

2. The hydraulic gas-liquid mixed transport booster device according to claim 1, characterized in that: The flow area inside the drive housing (6) is greater than the flow area between the outer side of the drive housing (6) and the conveying housing (3).

3. The hydraulic gas-liquid mixed transport booster device according to claim 1, characterized in that: The first drive blade (7) is made of elastic metal. The first drive blade (7) is fixed with spaced fixed beams (71) in the direction away from the adjacent liquid inlet connector (103). The two adjacent fixed beams (71) limit each other to restrict the bending direction of the adjacent first drive blade (7).

4. A hydraulic gas-liquid mixed transport and booster device according to claim 2, characterized in that: There is a gap between the drive housing (6) and the conveying housing (3). A first annular filter screen (9) is fixed to the inner side of the drive housing (6). The first annular filter screen (9) is used to prevent gravel from flowing to the first roller (51).

5. A hydraulic gas-liquid mixed transport and booster device according to claim 4, characterized in that: The conveying shell (3) is fixedly connected to the drive shell (6) above the working cavity with a guide filter (10). The guide filter (10) is semi-circular. The liquid inlet connector (103) is located between the guide filter (10) and the first drive blade (7) which is evenly distributed in the circumference in the working cavity. The liquid outlet connector (104) is located on the side of the first drive blade (7) which is evenly distributed in the circumference in the working cavity, close to the adjacent guide filter (10).

6. A hydraulic gas-liquid mixed transport booster device according to claim 5, characterized in that: The first mounting bracket (5) is rotatably connected to a drive fan (11) spaced apart. The drive fan (11) is located between the adjacent drive housing (6) and the adjacent first annular filter (9), and the drive fan (11) is located on the side of the first annular filter (9) near its outer edge. The drive fan (11) is fixedly connected to the adjacent first roller (51).

7. A hydraulic gas-liquid mixed transport booster device according to claim 1, characterized in that: The drive unit (4) has a second mounting bracket (12) fixedly connected to one side near the working space. The second mounting bracket (12) is rotatably connected to two sets of arc-shaped second rollers (121). All the second rollers (121) on the same second mounting bracket (12) are provided with a rotating shell (13). The rotating shell (13) rotates around the axis of the working cavity. The outer side of the rotating shell (13) is fixedly connected to a first stirring blade (131) that is evenly distributed in the circumference. The rotating shell (13) is fixedly connected to a second stirring blade (132) that is evenly distributed in the circumference near its axis. The rotating shell (13) is provided with a drive assembly for driving its own rotation.

8. A hydraulic gas-liquid mixed transport and booster device according to claim 7, characterized in that: Both the first roller (51) and the second roller (121) are made of corrosion-resistant rubber.

9. A hydraulic gas-liquid mixed transport booster device according to claim 7, characterized in that: The drive assembly includes a winding roller (14), which is rotatably connected to an adjacent rotating shell (13) and a torsion spring (141) is installed between them. The winding roller (14) is wound with spaced steel wires (15), which penetrate the adjacent rotating shell (13) and are fixed to the drive shell (6) in the same working cavity.

10. A hydraulic gas-liquid mixed transport booster device according to claim 9, characterized in that: The drive unit (4) has a fixed filter screen (16) fixedly connected in the working cavity. The rotating shell (13) has a second annular filter screen (17) fixedly connected. The fixed filter screen (16) is coaxial with the adjacent second annular filter screen (17). The second stirring blade (132) is located outside the adjacent second annular filter screen (17). There is a gap between the rotating shell (13) and the drive unit (4). The rotating shell (13) is annular. A third stirring blade (133) is fixedly connected to the inner side of the rotating shell (13). The third stirring blade (133) is located inside the adjacent second annular filter screen (17).

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