Vortex type gas multiphase mixed transportation supercharging device

Abstract

The utility model discloses a vortex type gas multiphase mixed transportation supercharging device, which relates to the technical field of oil exploitation, and comprises a fixed shell and a mixing pipe, the fixed shell is internally provided with a transmission mechanism for conveying oil, and one side of the fixed shell is fixedly connected with a liquid pumping pipe in a penetrating manner; the top of the end, away from the liquid pumping pipe, of the fixing shell is fixedly connected with a guiding-out pipe in a penetrating mode, a fixing shaft is rotationally connected into the mixing pipe, a first motor is fixedly connected to one side of the mixing pipe, a transmission shaft of the first motor is fixedly connected to one end of the fixing shaft, and first spiral blades, mixing blades and rotating blades are fixedly connected to the surface of the fixing shaft. The problems that after pressurization, the oil pressure and the flow speed in the device are increased, the fusion degree of gas is possibly not enough when the gas is mixed, slug flow is formed when the fusion degree of the gas is not enough, so that the pressure fluctuation of a pipeline is violent, and gas-liquid separation is not thorough easily when separation is needed in the later period are solved.

Description

Technical Field

[0001] This utility model relates to the field of petroleum extraction technology, specifically to a vortex-type gas multiphase mixing and pressurization device. Background Technology

[0002] In the field of oil and gas extraction, as oil and gas field development gradually enters the middle and late stages, the decline in single-well production and the increase in oil and gas water cut have become common phenomena, leading to a sharp increase in the cost of traditional oil and gas separation and transportation modes. Multiphase mixed transportation technology, because it does not require on-site gas-liquid separation and can directly mix and transport multiphase fluids such as oil, gas and water to the processing terminal, has become a key development direction for cost reduction and efficiency improvement.

[0003] Multiphase mixing technology can increase reservoir pressure and reduce pipeline resistance, thereby improving oilfield extraction efficiency. However, after pressurization, the oil pressure and flow rate inside the device increase, which may lead to insufficient gas fusion during gas mixing. When the gas fusion is insufficient, slug flow will form, resulting in drastic pipeline pressure fluctuations. Furthermore, when separation is required later, incomplete gas-liquid separation is also likely to occur. Therefore, it is necessary to design a vortex-type gas multiphase mixing and pressurization device with a high degree of gas fusion. Utility Model Content

[0004] The purpose of this invention is to provide a vortex-type gas multiphase mixing and pressurization device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vortex-type gas multiphase mixing and pressurization device, comprising a fixed shell and a mixing tube. The fixed shell is provided with a transmission mechanism for conveying oil. A liquid extraction pipe is fixedly connected through one side of the fixed shell. An outlet pipe is fixedly connected through the top of the fixed shell at the end away from the liquid extraction pipe. A fixed shaft is rotatably connected inside the mixing tube. A motor is fixedly connected to one side of the mixing tube. The drive shaft of the motor is fixedly connected to one end of the fixed shaft. A spiral blade, a mixing blade, and a rotating blade are fixedly connected to the surface of the fixed shaft. A connecting pipe is provided at the top of the mixing tube. A liquid delivery pipe and a liquid infusion pipe are fixedly connected through the tops of both ends of the fixed shell and the mixing tube, respectively.

[0006] Preferably, the transmission mechanism includes a first rotating shaft and a second rotating shaft, which are rotatably connected inside a fixed housing. A second motor is fixedly connected to the side of the fixed housing away from the liquid extraction tube. The drive shaft of the second motor is fixedly connected to one end of the first rotating shaft. A gear is fixedly connected to one end of both the first and second rotating shafts, and the two gears mesh and engage with each other. A second spiral blade is fixedly connected to both ends of the first and second rotating shafts.

[0007] Preferably, an electric heating tube is fixedly connected to the inner wall of the mixing tube.

[0008] Preferably, an air injection pipe is fixedly connected to the inner wall of the electric heating tube, and an air delivery pipe is fixedly connected through the top of the mixing tube, the electric heating tube, and the air injection pipe, with the top end of the air delivery pipe fixedly connected through the bottom of the connecting tube.

[0009] Preferably, a baffle is fixedly connected to the inner wall of the air injection pipe.

[0010] Preferably, bearings are fixedly connected to the surfaces of both the first and second rotating shafts, and the bearings are fixedly installed inside the fixed housing.

[0011] Preferably, both the bottom of the fixed shell and the mixing tube are fixedly connected to a support base.

[0012] Preferably, the air groove inside the air injection pipe is a spiral design.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention, by setting up a fixed shell and a mixing pipe, and through the separate operation of the two pipes, ensures the flow rate and velocity of oil transmission, while also enabling more thorough gas-liquid mixing through the mixing operation of the spiral blade, the blocking grid, the mixing blade, and the mixing blade. This results in more stable pressure inside the pipe and improves the success rate of subsequent gas-liquid separation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model. Figure 1 ;

[0017] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model. Figure 2 ;

[0018] Figure 4 This is a top-view schematic diagram of the structure of the air injection pipe of this utility model.

[0019] In the diagram: 1. Motor 1; 2. Liquid delivery pipe; 3. Connecting pipe; 4. Gas delivery pipe; 5. Mixing pipe; 6. Liquid extraction pipe; 7. Outlet pipe; 8. Motor 2; 9. Fixed housing; 10. Support base; 11. Electric heating element; 12. Gas injection pipe; 13. Spiral blade 1; 14. Fixed shaft; 15. Gear; 16. Bearing; 17. Spiral blade 2; 18. Rotating shaft 1; 19. Rotating shaft 2; 20. Barrier grid; 21. Mixing blade; 22. Infusion pipe; 23. Rotating blade. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This utility model provides a technical solution: a vortex-type gas multiphase mixing and pressurizing device, including a fixed shell 9 and a mixing pipe 5. The fixed shell 9 is provided with a transmission mechanism for conveying oil. A liquid extraction pipe 6 is fixedly connected through one side of the fixed shell 9. An outlet pipe 7 is fixedly connected through the top of the fixed shell 9 away from the liquid extraction pipe 6. A fixed shaft 14 is rotatably connected inside the mixing pipe 5. A motor 1 is fixedly connected to one side of the mixing pipe 5. The drive shaft of the motor 1 is fixedly connected to one end of the fixed shaft 14. A spiral blade 13, a mixing blade 21, and a rotating blade 23 are fixedly connected to the surface of the fixed shaft 14, which can fully mix the gas and increase the transmission pressure of the oil. A connecting pipe 3 is provided at the top of the mixing pipe 5. A liquid delivery pipe 2 and a liquid conveying pipe 22 are fixedly connected through the tops of both ends of the fixed shell 9 and the mixing pipe 5, respectively.

[0022] Furthermore, the transmission mechanism includes a first rotating shaft 18 and a second rotating shaft 19, which are rotatably connected to the inside of the fixed housing 9. A second motor 8 is fixedly connected to the side of the fixed housing 9 away from the liquid extraction pipe 6, which can perform high-flow-rate and high-speed transmission of oil. The drive shaft of the second motor 8 is fixedly connected to one end of the first rotating shaft 18. A gear 15 is fixedly connected to one end of both the first rotating shaft 18 and the second rotating shaft 19. The two gears 15 mesh and engage with each other. A spiral blade 17 is fixedly connected to both ends of the first rotating shaft 18 and the second rotating shaft 19.

[0023] Furthermore, an electric heating tube 11 is fixedly connected to the inner wall of the mixing tube 5, which can be activated when the oil mixture is difficult to mix, thereby reducing the viscosity of the oil.

[0024] Furthermore, an air injection pipe 12 is fixedly connected to the inner wall of the electric heating tube 11, and an air supply pipe 4 is fixedly connected through the top of the mixing pipe 5, the electric heating tube 11, and the air injection pipe 12 to facilitate air intake operation. The top end of the air supply pipe 4 is fixedly connected through the bottom of the connecting pipe 3.

[0025] Furthermore, a baffle 20 is fixedly connected to the inner wall of the air injection pipe 12 to create a turbulence effect, thereby making the fusion more complete.

[0026] Furthermore, bearings 16 are fixedly connected to the surfaces of both shaft 18 and shaft 2 19 to improve the stability of shaft 18 and shaft 2 19 during rotation. The bearings 16 are fixedly installed inside the fixed housing 9.

[0027] Furthermore, both the bottom of the fixed shell 9 and the mixing tube 5 are fixedly connected to the support base 10 to improve the stability of the device.

[0028] Furthermore, the gas groove inside the gas injection pipe 12 is designed in a spiral shape, which allows the gas to be fully heated.

[0029] Working principle: Connect the connecting pipe 3, the suction pipe 6, and the outlet pipe 7 to the external equipment respectively. Then start the motor 1 and the motor 8 respectively. The motor 8 drives the rotating shaft 18 and the rotating shaft 2 19 to rotate through the gear 15. The rotating shaft 18 and the rotating shaft 2 19 drive the oil from one end of the suction pipe 6 to one end of the outlet pipe 7 through the spiral blade 2 17. In order to improve the oil delivery effect of the device, the pitch of the spiral blade 2 17 is wider than that of the spiral blade 13. Because the head is lower at the wider pitch of the spiral blade 2 17, but the flow rate is larger, it does not need to overcome the high back pressure when delivering oil. It can more efficiently convert mechanical energy into fluid kinetic energy rather than pressure energy. The wide pitch design allows the spiral blade 2 17 to push more fluid with each rotation, thereby improving the oil suction efficiency of the device.

[0030] External oil is drawn into the fixed housing 9 through the suction pipe 6 and the second spiral blade 17, and then moves to the mixing pipe 5 through the delivery pipe 22. Since the pitch of the first spiral blade 13 is smaller than that of the second spiral blade 17, the oil flow rate is reduced, allowing for more thorough mixing of the gas and oil. The gas is delivered from the connecting pipe 3 and the air supply pipe 4 to the air injection pipe 12. Because the air passage in the air injection pipe 12 is spirally designed, when the external temperature is low, the internal oil may experience hydration or wax formation, or the gas-liquid mixture may result in excessively high viscosity and difficulty in flow. In such cases, the electric heating element 11 can be activated, and the gas will then be heated by the electric heating element. After being fully heated by the heating tube 11, the mixture is delivered to the mixing tube 5, allowing the mixing operation to proceed normally. The mixture is then fully mixed under the stirring action of the mixing blade 21. The baffle 20 can block and turbulent the oil, thereby further improving the mixing effect. The mixed oil is then delivered to the rotating blade 23, which causes the oil to vortex, thereby increasing the oil pressure through multiple energy transfers. The oil is then delivered through the delivery pipe 2 to the end of the fixed shell 9 near the outlet pipe 7. At this point, the oil flow rate is increased again under the action of the spiral blade 17, thereby ensuring the oil transmission efficiency.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vortex-type gas multiphase mixing and pressurization device, comprising a fixed shell (9) and a mixing pipe (5), characterized in that: The fixed shell (9) is equipped with a transmission mechanism for conveying oil. A liquid extraction pipe (6) is fixedly connected through one side of the fixed shell (9). An outlet pipe (7) is fixedly connected through the top of the fixed shell (9) away from the liquid extraction pipe (6). A fixed shaft (14) is rotatably connected inside the mixing pipe (5). A motor (1) is fixedly connected to one side of the mixing pipe (5). The drive shaft of the motor (1) is fixedly connected to one end of the fixed shaft (14). A spiral blade (13), a mixing blade (21), and a rotating blade (23) are fixedly connected to the surface of the fixed shaft (14). A connecting pipe (3) is provided at the top of the mixing pipe (5). A liquid delivery pipe (2) and a liquid infusion pipe (22) are fixedly connected through the tops of both ends of the fixed shell (9) and the mixing pipe (5).

2. The vortex-type gas multiphase mixing and pressurization device according to claim 1, characterized in that: The transmission mechanism includes a first rotating shaft (18) and a second rotating shaft (19). The first rotating shaft (18) and the second rotating shaft (19) are rotatably connected to the inside of a fixed shell (9). A second motor (8) is fixedly connected to the side of the fixed shell (9) away from the liquid extraction tube (6). The transmission shaft of the second motor (8) is fixedly connected to one end of the first rotating shaft (18). A gear (15) is fixedly connected to one end of both the first rotating shaft (18) and the second rotating shaft (19). The two gears (15) mesh and engage with each other. A second spiral blade (17) is fixedly connected to both ends of the first rotating shaft (18) and the second rotating shaft (19).

3. The vortex-type gas multiphase mixing and pressurization device according to claim 1, characterized in that: An electric heating tube (11) is fixedly connected to the inner wall of the mixing tube (5).

4. The vortex-type gas multiphase mixing and pressurization device according to claim 3, characterized in that: An air injection pipe (12) is fixedly connected to the inner wall of the electric heating tube (11). An air delivery pipe (4) is fixedly connected through the top of the mixing pipe (5), the electric heating tube (11), and the air injection pipe (12). The top of the air delivery pipe (4) is fixedly connected through the bottom of the connecting pipe (3).

5. A vortex-type gas multiphase mixing and pressurization device according to claim 4, characterized in that: The inner wall of the gas injection pipe (12) is fixedly connected with a baffle (20).

6. A vortex-type gas multiphase mixing and pressurization device according to claim 2, characterized in that: The surfaces of the first rotating shaft (18) and the second rotating shaft (19) are both fixedly connected with bearings (16), and the bearings (16) are fixedly installed inside the fixed shell (9).

7. A vortex-type gas multiphase mixing and pressurization device according to claim 1, characterized in that: The bottom of both the fixed shell (9) and the mixing tube (5) are fixedly connected to a support base (10).

8. A vortex-type gas multiphase mixing and pressurization device according to claim 4, characterized in that: The gas groove inside the gas injection pipe (12) is designed in a spiral shape.

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