Oil field polymer storage and conveying tank body equipment

Abstract

The invention discloses oil field polymer storage and conveying tank equipment, which relates to the technical field of storage equipment and comprises a container, a storage tank, an injection pump, a suction pump, a fixed bin, a mounting bin and a connector. The spiral sheet is slidably sleeved on the periphery of the mounting bin, two ends of the spiral sheet are fixedly connected with a fixed ring and a sliding ring respectively, the fixed ring is fixedly sleeved on the periphery of the mounting bin, the sliding ring is slidably sleeved on the periphery of the mounting bin, the spiral sheet is arranged in the mounting cavity, and a spiral fluid channel is defined by the spiral sheet and an inner cavity of the mounting cavity. According to the invention, heat-conducting oil is conveyed to the mounting cavity by an external heat-conducting oil conveying system and flows in the spiral fluid channel, the mounting bin can be heated in the flowing process, so that polyacrylamide in the inner cavity of the mounting bin is heated, and the viscosity of the polyacrylamide can be reduced and the fluidity can be improved through heating; the viscosity degree of polyacrylamide in the suction pump during conveying is low, and the conveying efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of storage equipment technology, specifically to an oilfield polymer storage and transportation tank device. Background Technology

[0002] Tertiary oil recovery, following primary (reservoir energy extraction) and secondary (energy replenishment through water or gas injection), employs more advanced technologies to further extract remaining crude oil underground. It is primarily achieved through methods such as gas injection, chemical injection, ultrasonic stimulation, microbial injection, or heat recovery. By injecting polymers, surfactants, or alkalis, the properties of the displacement fluid are altered, improving wash efficiency and swept volume. Oilfield polymers play a crucial role in oil and gas field development, mainly used for enhancing recovery rates and optimizing extraction processes.

[0003] Polyacrylamide is one of the most commonly used polymers in oilfields, mainly used to enhance oil recovery (tertiary oil recovery) and improve oil production processes. In its liquid state, polyacrylamide has a certain viscosity. During storage, it is kept in tanks. When needed, it is typically transported by a pump that draws suction. Because polyacrylamide has a certain viscosity, and this viscosity is related to temperature—specifically, as temperature increases, viscosity decreases and fluidity increases; conversely, as temperature decreases, viscosity increases and fluidity decreases—current storage equipment often results in high viscosity and poor fluidity of polyacrylamide during storage, leading to low transport efficiency for pumps. Summary of the Invention

[0004] The purpose of this invention is to provide an oilfield polymer storage and transportation tank device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An oilfield polymer storage and transportation tank system includes a container and a storage tank installed inside the container. The storage tank has an injection pump connected to its inlet, and a suction pump connected to the suction outlet of the storage pipe. The system also includes: A fixed compartment is horizontally fixed to the inner wall of the storage tank and communicates with the suction port. An installation compartment is coaxially inserted into the fixed compartment, with one end of the installation compartment fixedly connected to one end of the fixed compartment. The periphery of the installation compartment and the inner wall of the fixed compartment form an installation cavity. The wall of the fixed compartment is provided with two interfaces. A spiral blade is slidably wrapped around the periphery of the mounting chamber. A fixed ring and a sliding ring are respectively fixedly connected to both ends of the spiral blade. The fixed ring is fixedly wrapped around the periphery of the mounting chamber, and the sliding ring is slidably wrapped around the periphery of the mounting chamber. The spiral blade is disposed inside the mounting cavity and forms a spiral fluid channel with the inner cavity of the mounting cavity.

[0006] Through the above technical solution, the heat transfer oil is transported to the installation cavity by an external heat transfer oil delivery system and flows in the spiral fluid channel. During the flow, the installation chamber can be heated, thereby heating the polyacrylamide located in the installation chamber cavity. Heating can reduce the viscosity of polyacrylamide and improve its fluidity, resulting in lower viscosity of polyacrylamide in the suction pump during delivery and improving delivery efficiency.

[0007] Furthermore, the installation chamber is equipped with an adjustment unit, which is used to generate axial pressure on the spiral blades to compress the spiral blades, thereby adjusting the pitch of the spiral fluid channel.

[0008] Through the above technical solution, the regulating unit generates extrusion pressure on the spiral blades, thereby compressing the spiral blades. This reduces the pitch and narrows the width of the spiral fluid channel, increasing the flow velocity of the heat transfer oil within the spiral fluid channel. Consequently, when the flow velocity of polyacrylamide entering the installation chamber is high, the heating efficiency of the heat transfer oil on the polyacrylamide is also improved.

[0009] Furthermore, the adjustment unit includes a rotating chamber coaxially rotatably connected to the inner cavity of the mounting chamber. A fixed retaining ring is fixedly sleeved around one end of the rotating chamber that protrudes from the mounting chamber. An arc-shaped protrusion is fixedly connected to one end face of the fixed retaining ring facing the mounting chamber. An installation pin is horizontally fixed to the end face of the sliding ring. The installation pin slidably protrudes from the mounting chamber and cooperates with the arc-shaped protrusion.

[0010] With the above technical solution, when the rotating chamber rotates, the fixed retaining ring can rotate, and the end of the mounting pin can slide alternately on the end face of the fixed retaining ring and the surface of the arc-shaped protrusion. This allows the mounting pin to move away from the fixed retaining ring, so that the mounting pin exerts a compressive force on the sliding ring, which in turn exerts a compressive force on the spiral blade, and the spiral blade will be in a compressed state.

[0011] Furthermore, a ball bearing is rotatably fitted at the end of the mounting pin, and the ball bearing is used in conjunction with the arc-shaped protrusion.

[0012] The above technical solution allows the balls to roll on the end face of the fixed retaining ring and the surface of the arc-shaped protrusion, thereby reducing the wear of the mounting pin.

[0013] Furthermore, multiple helical blades are fixed to the inner wall of the rotating chamber, and the multiple helical blades are arranged in an array along the axial direction of the rotating chamber.

[0014] Through the above technical solution, polyacrylamide will impact the spiral blades during the conveying process, thereby enabling the polyacrylamide to flow on the surface of the spiral blades. During the flow, the polyacrylamide is subjected to a large shear force, which breaks the surface tension and increases the fluidity of the polyacrylamide. In addition, when the impact force is large, the spiral blades will rotate and drive the rotating chamber to rotate. When the rotating chamber rotates, the balls will roll onto the surface of the arc-shaped protrusion, thereby causing the mounting pin to be subjected to extrusion pressure and causing the spiral blades to undergo compression deformation.

[0015] Furthermore, the width of the spiral blades increases sequentially towards the suction port.

[0016] Through the above technical solution, on the one hand, when polyacrylamide flows on the surface of the spiral blades, it can generate flow towards the axis of the rotating chamber, resulting in greater shear force on the polyacrylamide. On the other hand, the end with the largest width of the multiple spiral blades will form a tip, which will greatly disrupt the surface tension of the polyacrylamide, thereby further improving the flowability of the polyacrylamide.

[0017] Furthermore, the periphery of the installation compartment is provided with a rubber layer.

[0018] The above technical solution ensures that the contact surface between the spiral blade and the installation chamber has a good sealing effect when the spiral blade slides around the periphery of the installation chamber.

[0019] Furthermore, a pressing unit is provided at one end of the rotating chamber away from the fixed chamber. The pressing unit includes an extrusion plate and a sliding plate that are coaxially and slidably engaged within the rotating chamber. A first through groove is provided on the end face of the extrusion plate, and a second through groove is provided on the end face of the sliding plate. The first through groove and the second through groove are used in conjunction. A cylinder is installed on the wall of the storage tank, and the cylinder rod of the cylinder passes through the storage tank and is rotatably connected to the extrusion plate.

[0020] With the above technical solution, during the suction and conveying process, the cylinder rod of the cylinder first extends, thereby causing the extrusion plate to exert extrusion force on the polyacrylamide in the rotating chamber. This causes the polyacrylamide to flow rapidly within the rotating chamber, filling the suction pump. The suction pump can generate sufficient vacuum, enabling the polyacrylamide to be quickly suctioned and conveyed. This prevents the high viscosity and poor flowability of the polyacrylamide from preventing the suction pump from being filled in the early stages of suction and conveying, which would otherwise hinder rapid delivery.

[0021] Furthermore, steel balls are rotatably embedded around the periphery of the sliding plate, and irregularly shaped rolling grooves are formed on the inner wall of the rotating chamber. The irregularly shaped rolling grooves include a first straight groove, a spiral groove, and a second straight groove connected end to end in the direction away from the cylinder. The steel balls roll freely in the first straight groove, the spiral groove, and the second straight groove.

[0022] With the above technical solution, when the sliding plate moves towards the inside of the rotating chamber, the steel ball will roll from the first straight groove into the spiral groove, causing the sliding plate to rotate at a certain angle relative to the extrusion plate. This causes the positions of the first and second through grooves to change from the original connected state to the disconnected state, thereby enabling the extrusion plate to extrude the polyacrylamide in the rotating chamber cavity when it moves, causing the polyacrylamide to flow rapidly towards the suction pump.

[0023] Furthermore, a cylindrical part is coaxially fixed to the end face of the extrusion plate, the sliding plate is slidably fitted onto the cylindrical part, a locking ring is fixedly fitted onto the end of the cylindrical part facing the installation chamber, and a spring is wrapped around the periphery of the cylindrical part, with the two ends of the spring elastically abutting against the sliding plate and the locking ring respectively in the direction of the spring force.

[0024] With the above technical solution, when the cylinder rod of the cylinder is shortened, it will drive the extrusion plate and the sliding plate to move away from the suction pump. At this time, the sliding plate is resisted by the polyacrylamide in the inner cavity of the rotating chamber, causing the sliding plate to move away from the extrusion plate, so that the polyacrylamide can enter the rotating chamber through the first channel and the second channel.

[0025] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, heat transfer oil is transported to the installation cavity by an external heat transfer oil delivery system and flows in the spiral fluid channel. During the flow, the installation chamber can be heated, thereby heating the polyacrylamide located in the inner cavity of the installation chamber. Through heating, the viscosity of polyacrylamide can be reduced and the fluidity can be improved, so that the viscosity of polyacrylamide in the suction pump is lower during delivery, thus improving the delivery efficiency. 2. In this invention, the adjusting unit generates extrusion force on the spiral blades, thereby compressing the spiral blades. This reduces the pitch and narrows the width of the spiral fluid channel, increasing the flow velocity of the heat transfer oil in the spiral fluid channel. Consequently, when the flow velocity of polyacrylamide entering the installation chamber is high, the heating efficiency of the heat transfer oil on the polyacrylamide is also improved. 3. In this invention, during the suction and conveying process, the cylinder rod of the cylinder is first extended, which causes the extrusion plate to exert extrusion force on the polyacrylamide in the rotating chamber, causing the polyacrylamide to flow rapidly in the rotating chamber to fill the suction pump. The suction pump can generate a sufficient vacuum, enabling the polyacrylamide to be quickly suctioned and conveyed. This prevents the high viscosity and poor flowability of the polyacrylamide from preventing the suction pump from being filled in the early stage of suction and conveying, which would otherwise hinder rapid conveying. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the overall structure of an oilfield polymer storage and transportation tank device according to the present invention; Figure 2 for Figure 1 A schematic diagram showing the positional relationships of containers (omitted). Figure 3 for Figure 2 A diagram illustrating the positional relationship from another perspective; Figure 4 This is a schematic diagram showing the positional relationship between the fixed chamber, the mounting chamber, and the cylinder after assembly in this invention; Figure 5 for Figure 4 A diagram illustrating the positional relationships from a first-person perspective. Figure 6 for Figure 4 A schematic diagram showing the positional relationship of the middle section after it has been cut open; Figure 7 for Figure 4 A schematic diagram showing the positional relationship of some structures after being cut open from a second-person perspective; Figure 8 This is a schematic diagram showing the positional relationship of the mounting chamber, spiral blade, and rotating chamber after assembly in this invention; Figure 9 for Figure 8 Schematic diagram of the explosive decomposition of the medium structure; Figure 10 for Figure 8 A schematic diagram of the explosive decomposition of the structure from another perspective; Figure 11 This is a schematic diagram of the rotating chamber in this invention; Figure 12 for Figure 11 A diagram illustrating the positional relationships from a first-person perspective.

[0027] The following are explanations of the reference numerals in the figures: 1. Container; 2. Storage tank; 3. Suction pump; 4. Injection pump; 5. Cylinder; 6. Extrusion plate; 7. Rotating chamber; 8. Arc-shaped protrusion; 9. Fixed chamber; 10. Interface; 11. Connecting flange; 12. Fixed retaining ring; 13. First through groove; 14. Mounting pin; 15. Ball bearing; 16. Mounting cavity; 17. Spiral blade; 18. Sliding ring; 19. Second straight groove; 20. Spiral groove; 21. Spring; 22. Spiral blade; 23. Locking ring; 24. Columnar part; 25. Second through groove; 26. Sliding plate; 27. Mounting chamber; 28. Steel ball; 29. ​​Fixed ring; 30. Tip; 31. First straight groove. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-12 This invention provides a technical solution: an oilfield polymer storage and transportation tank device, including a container 1 and a storage tank 2 installed inside the container 1. An injection pump 4 is connected to the injection port of the storage tank 2, and a suction pump 3 is connected to the suction port of the storage tank 2. A fixed chamber 9 is horizontally fixed to the inner wall of the storage tank 2 by screws. The fixed chamber 9 is open at both ends and is connected to the suction port. An installation chamber 27 is coaxially inserted inside the fixed chamber 9. An outwardly flared connecting flange 11 is fixed to one end of the installation chamber 27 facing the inside of the storage tank 2. The connecting flange 11 is connected to the end face of the fixed chamber 9 by screws. The installation chamber 27 and the inner wall of the fixed chamber 9 form an annular installation cavity 16. The wall of the fixed chamber 9 is provided with two interfaces 10, which are respectively connected to the inlet and outlet of the external heat transfer oil delivery system. This allows the external heat transfer oil delivery system to deliver heat transfer oil at a certain temperature to one interface 10, and then into the installation cavity 16 through the interface 10. The oil then flows back to the inlet of the external heat transfer oil delivery system through the other interface 10, thus realizing the circulation of the heat transfer oil. During the circulation, the installation chamber 27 and the fixed chamber 9 are heated. A spiral blade 17 is slidably wound around the periphery of the mounting chamber 27. A fixed ring 29 and a sliding ring 18 are fixedly connected to both ends of the spiral blade 17, respectively. The fixed ring 29 is fixedly fitted around the periphery of the mounting chamber 27, and the sliding ring 18 is slidably fitted around the periphery of the mounting chamber 27. The spiral blade 17 is located inside the mounting cavity 16 and forms a spiral fluid channel with the inner cavity of the mounting cavity 16. A rotating chamber 7 is coaxially rotatably connected to the inner cavity of the mounting chamber 27. A fixed retaining ring 12 is fixedly fitted around the periphery of one end of the rotating chamber 7 that protrudes from the mounting chamber 27. An arc-shaped protrusion 8 is fixedly connected to the side end of the fixed retaining ring 12 facing the mounting chamber 27. The sliding ring 18... A mounting pin 14 is fixedly connected horizontally to the mounting chamber 27. The mounting pin 14 slides through the mounting chamber 27. A ball bearing 15 is rotatably embedded at the end of the mounting pin 14. The ball bearing 15 cooperates with the arc-shaped protrusion 8. Multiple spiral blades 22 are fixedly connected to the inner wall of the rotating chamber 7. The multiple spiral blades 22 are arranged in an array along the axial direction of the rotating chamber 7. When the suction pump 3 is started, it will generate a negative pressure suction force on the polyacrylamide in the storage tank 2, so that the polyacrylamide flows from the storage tank 2 to the rotating chamber 7. During the transportation process, the polyacrylamide will impact the spiral blades 22, thereby allowing the polyacrylamide to flow on the surface of the spiral blades 22. During the flow process, the polyacrylamide is subjected to a large shear force, which in turn breaks the surface tension and increases the fluidity of the polyacrylamide. In addition, when the impact force is large, the spiral blade 22 will rotate and drive the rotating chamber 7 to rotate. When the rotating chamber 7 rotates, the ball 15 will roll onto the surface of the arc-shaped protrusion 8, which will cause the mounting pin 14 to be subjected to extrusion force and cause the spiral blade 17 to undergo compression deformation. The width of the spiral blade 22 increases sequentially towards the direction of the suction port, so that the maximum width of multiple spiral blades 22 forms a tip 30. In addition, the peripheral wall of the mounting chamber 27 is provided with a rubber layer, so that when the spiral blade 17 slides on the surface of the mounting chamber 27, the contact surface between the two has a good seal. An extrusion plate 6 and a sliding plate 26 are coaxially and slidably installed inside the rotating chamber 7. The end face of the extrusion plate 6 has a first through groove 13. The sliding plate 26 is located between the extrusion plate 6 and the mounting chamber 27. The end face of the sliding plate 26 has a second through groove 25. The first through groove 13 and the second through groove 25 work together. A cylinder 5 is installed on the wall of the storage tank 2. The cylinder rod of the cylinder 5 passes through the storage tank 2 and is rotatably connected to the extrusion plate 6. Steel balls 28 are rotatably embedded around the periphery of the sliding plate 26. An irregularly shaped rolling groove is formed on the inner wall of the rotating chamber 7. The irregularly shaped rolling groove, moving away from the cylinder 5, sequentially includes a first straight groove 31, a spiral groove 20, and a second straight groove 19 connected end-to-end. Steel balls 28 are embedded in the first straight groove 31, the spiral groove 20, and the spiral groove 19. The tubes roll freely within the groove 20 and the second straight groove 19. A cylindrical part 24 is coaxially fixed to the end face of the extrusion plate 6. The sliding plate 26 is slidably fitted onto the cylindrical part 24. A locking ring 23 is fixedly fitted onto one end of the cylindrical part 24 facing the installation chamber 27. A spring 21 is wrapped around the periphery of the cylindrical part 24. The two ends of the spring 21 elastically abut against the sliding plate 26 and the locking ring 23 respectively in the direction of the spring force. In the initial state, the spring 21 generates an elastic abutting force on the sliding plate 26, thereby causing the sliding plate 26 to abut against the end face of the extrusion plate 6, and the openings of the first through groove 13 and the second through groove 25 completely overlap, so that the polyacrylamide in the storage tank 2 can enter the inner cavity of the rotating chamber 7 through the first through groove 13 and the second through groove 25.

[0030] Working principle of the invention: The injection pump 4 delivers polyacrylamide to the injection port and into the storage tank 2 for storage. When it is necessary to deliver the polyacrylamide from the storage tank 2, the cylinder 5 is first activated. The cylinder rod of the cylinder 5 extends, causing the cylinder 5 to drive the extrusion plate 6 to move in the direction of the suction pump 3 within the rotating chamber 7. Simultaneously, the sliding plate 26 also moves in the direction of the suction pump 3. At the same time, the steel ball 28 rolls from the first straight groove 31 to the spiral groove 20, thereby causing the sliding plate 26 to rotate relative to the extrusion plate 6. This causes the first through groove 13 and the second through groove 25 to rotate into a misaligned state. This ensures that the contact surfaces of the extrusion plate 6 and the sliding plate 26 are sealed after their end faces come into contact. When the extrusion plate 6 moves, the steel ball 28 rolls in the second straight groove 19, which can squeeze the polyacrylamide in the rotating chamber 7 into the suction pump 3, allowing the suction pump 3 to be filled with polyacrylamide. Then, the suction pump 3 is started. When the suction pump 3 is started, it can deliver the polyacrylamide in the suction pump 3. Simultaneously, the cylinder 5 is started again. Then the cylinder rod of the cylinder 5 is shortened, causing the extrusion plate 6 and the sliding plate 26 to move in opposite directions. The sliding plate 26 is resisted by the polyacrylamide. The sliding plate 26 overcomes the elastic resistance of the spring 21 and moves away from the extrusion plate 6, thereby creating a gap between the extrusion plate 6 and the sliding plate 26. At this time, the polyacrylamide in the storage tank 2 flows into the inner cavity of the rotating chamber 7 through the first channel 13, the gap and the second channel 25. Under the suction force of the suction pump 3, it quickly enters the suction pump 3 and can be delivered to the outside of the storage tank 2. During the transport process, the external heat transfer oil transport system is activated, which transports heat transfer oil at a certain temperature to the installation cavity 16 and circulates it in the spiral fluid channel. This heats the polyacrylamide in the rotating chamber 7, reducing its viscosity and improving its fluidity. During the flow, the polyacrylamide flows on the surface of the spiral blade 22. This flow generates a flow towards the axis of the rotating chamber 7, resulting in a greater shear force on the polyacrylamide. Furthermore, the tip 30 significantly disrupts the surface tension of the polyacrylamide, further enhancing its fluidity. During the transport process, the polyacrylamide impacts the spiral blades 22, causing it to flow on their surface. During this flow, the polyacrylamide experiences significant shear force, which disrupts surface tension and increases its fluidity. Furthermore, when the impact force is high, the spiral blades 22 rotate, causing the rotating chamber 7 to rotate as well. As the chamber rotates, the balls 15 roll onto the surface of the arc-shaped protrusion 8, subjecting the mounting pin 14 to compressive force and causing the spiral blades 17 to deform. This reduces the pitch and width of the spiral fluid channel, increasing the flow rate of the heat transfer oil within it. This, in turn, matches the flow rate of the polyacrylamide, preventing a decrease in its heating effect. Conversely, a high flow rate results in a high viscosity, affecting the polyacrylamide's fluidity.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oilfield polymer storage and transportation tank system, comprising a container (1) and a storage tank (2) installed within the container (1), wherein an injection pump (4) is connected to the injection port of the storage tank (2), and a suction pump (3) is connected to the suction port of the storage pipe (2), characterized in that, Also includes: The fixed compartment (9) is horizontally fixed to the inner wall of the storage tank (2) and communicates with the suction port; The installation compartment (27) is coaxially inserted through the fixed compartment (9), with one end of it fixedly connected to one end of the fixed compartment (9). The periphery of the installation compartment (27) and the inner wall of the fixed compartment (9) form an installation cavity (16). The wall of the fixed compartment (9) is provided with two interfaces (10). A spiral blade (17) is slidably wrapped around the periphery of the mounting chamber (27). A fixed ring (29) and a sliding ring (18) are fixedly connected to both ends of the spiral blade (17). The fixed ring (29) is fixedly wrapped around the periphery of the mounting chamber (27), and the sliding ring (18) is slidably wrapped around the periphery of the mounting chamber (27). The spiral blade (17) is located in the mounting cavity (16) and forms a spiral fluid channel with the inner cavity of the mounting cavity (16).

2. The oilfield polymer storage and transportation tank equipment according to claim 1, characterized in that, The installation chamber (27) is provided with an adjustment unit, which is used to generate axial pressure on the spiral blade (17) so that the spiral blade (17) is in a compressed state, thereby adjusting the pitch of the spiral fluid channel.

3. The oilfield polymer storage and transportation tank equipment according to claim 2, characterized in that, The adjustment unit includes a rotating chamber (7) coaxially rotatably connected to the inner cavity of the mounting chamber (27). A fixed retaining ring (12) is fixedly sleeved on the periphery of one end of the rotating chamber (7) that protrudes from the mounting chamber (27). An arc-shaped protrusion (8) is fixedly connected to one end face of the fixed retaining ring (12) facing the mounting chamber (27). An installation pin (14) is horizontally fixed to the end face of the sliding ring (18). The installation pin (14) slides out of the mounting chamber (27) and cooperates with the arc-shaped protrusion (8).

4. The oilfield polymer storage and transportation tank equipment according to claim 3, characterized in that, The mounting pin (14) is rotatably fitted with a ball (15), which is used in conjunction with the arc-shaped protrusion (8).

5. The oilfield polymer storage and transportation tank equipment according to claim 3, characterized in that, The inner wall of the rotating chamber (7) is fixed with multiple helical blades (22), and the multiple helical blades (22) are arranged in an array along the axial direction of the rotating chamber (7).

6. The oilfield polymer storage and transportation tank equipment according to claim 5, characterized in that, The width of the spiral blade (22) increases sequentially towards the adjacent suction port.

7. The oilfield polymer storage and transportation tank equipment according to claim 1, characterized in that, The periphery of the installation chamber (27) is provided with a rubber layer.

8. The oilfield polymer storage and transportation tank equipment according to claim 1, characterized in that, The rotating chamber (7) is provided with a pressing unit at one end away from the fixed chamber (9). The pressing unit includes an extrusion plate (6) and a sliding plate (26) that are coaxially and slidably engaged in the rotating chamber (7). The end face of the extrusion plate (6) is provided with a first through groove (13), and the end face of the sliding plate (26) is provided with a second through groove (25). The first through groove (13) and the second through groove (25) are used in conjunction. A cylinder (5) is installed on the wall of the storage tank (2). The cylinder rod of the cylinder (5) passes through the storage tank (2) and is rotatably connected to the extrusion plate (6).

9. The oilfield polymer storage and transportation tank equipment according to claim 8, characterized in that, The sliding plate (26) is rotatably embedded with steel balls (28) around its periphery. The inner wall of the rotating chamber (7) is provided with irregular rolling grooves. The irregular rolling grooves include a first straight groove (31), a spiral groove (20) and a second straight groove (19) connected end to end in the direction away from the cylinder (5). The steel balls (28) roll freely in the first straight groove (31), the spiral groove (20) and the second straight groove (19).

10. The oilfield polymer storage and transportation tank equipment according to claim 8, characterized in that, The end face of the extrusion plate (6) is coaxially fixed with a cylindrical part (24), the sliding plate (26) is slidably fitted onto the cylindrical part (24), a locking ring (23) is fixedly fitted onto one end of the cylindrical part (24) facing the installation chamber (7), and a spring (21) is wrapped around the periphery of the cylindrical part (24). The two ends of the spring (21) elastically abut against the sliding plate (26) and the locking ring (23) respectively in the direction of the elastic force.

Images