A double cylinder sand remover and transport pry

Abstract

The application discloses a double-cylinder sand remover and a transport lever, relates to the technical field of oil and natural gas exploitation, and comprises two parallel sand removing cylinders, a sand cylinder upper cover arranged at the upper end, a sand cylinder connecting valve block connected to the front end, a cleaning outlet stop valve connected to the rear end, a sand discharging switch valve body arranged at the lower end, manual valves arranged on the two sides of the sand discharging switch valve body, a two-inch Rong outlet connected to the sand discharging end, a three-inch Rong inlet connected to a shunt valve block, manual valves one to four, a sand removing channel liquid inlet pipe, a pressure detection instrument arranged at the upper end, a sand removing channel connecting pipe, manual valves ten and eleven, a sand cylinder connecting valve block connected to the manual valve nine and the two-inch Rong inlet, a confluence transition pipe connected to the manual valves five to eight, sand removing cylinders and a blowout main channel pipe, a main channel confluence valve body connected to the three-inch Rong outlet, a pressure transmitter and a manual valve, an instrument control box arranged at the upper end of the blowout main channel pipe, and a transport lever comprising a frame type body, an operation platform, a ladder and a top guide lifting column, so that integrated transportation and operation are realized.

Description

Technical Field

[0001] This invention relates to the field of oil and gas extraction technology, specifically to a double-cylinder desander and transport skid. Background Technology

[0002] During oil and gas field development, the fluids produced from oil or gas wells (such as crude oil, natural gas, and associated wastewater) often contain solid impurities such as sand and rock fragments. If these impurities are not removed in time, they will exacerbate pipeline wear, equipment blockage, and even damage critical components such as pumps and valves, seriously affecting extraction efficiency and production safety. Therefore, as a key purification device in the oil and gas extraction process, the performance of the desander directly affects the stability of subsequent production.

[0003] Currently, traditional desanders mostly adopt a single filter tank design. Although they can achieve basic solid-liquid separation, they have significant limitations: First, when solid impurities accumulate to a certain level in the filter tank, the machine must be stopped to disassemble the filter screen to complete sand removal and cleaning, leading to interruptions in mining operations. This is especially true in scenarios with high continuity requirements, such as post-fracturing cleaning or perforation operations for sand consolidation testing, where downtime for maintenance significantly reduces production efficiency. Second, the filter screen disassembly process is cumbersome, requiring specialized tools for step-by-step disassembly, which not only increases the labor intensity of maintenance personnel but also prolongs equipment downtime, resulting in high maintenance costs. Third, some desanders have fixed frame structures that cannot be adapted to lifting devices. When the filter screen needs to be replaced due to wear or blockage from long-term use, the handling and installation of heavy-duty filter screens is extremely inconvenient, further restricting maintenance efficiency. In addition, traditional desanders have limited processing capacity and adaptability, making it difficult to meet the purification needs of high-flow-rate fluids, and their sand removal effect is not stable enough under complex operating conditions.

[0004] To address the aforementioned issues, there is an urgent need to develop a new type of desander that can achieve continuous operation, is easy to maintain, and is adaptable to various working conditions. This would meet the actual needs of oil and gas extraction for efficient desander removal and low downtime losses, and would be particularly suitable for harsh scenarios such as post-fracturing cleaning and sand consolidation testing perforation operations. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-cylinder sand separator and a transport skid to solve the problems of existing sand separators, such as the need for downtime maintenance, cumbersome filter screen disassembly, high maintenance costs, and insufficient adaptability caused by the single filter tank design.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a double-cylinder sand remover, comprising:

[0007] Two sand removal cylinders are arranged side by side, and each sand removal cylinder is equipped with a sand cylinder cover at its upper end;

[0008] The sand cylinder connecting valve block has its front end connected to the upper end of the two sand removal cylinders and its rear end connected to a cleaning outlet shut-off valve.

[0009] The sand discharge switching valve body is located at the lower end of the two sand removal cylinders. Manual valve twelve and manual valve thirteen are respectively installed on both sides of its outer end. The other ends of manual valve twelve and manual valve thirteen are respectively connected to the inner side of the sand removal cylinder. Its sand discharge end is connected to a two-inch union outlet.

[0010] The diversion valve block has a three-inch union inlet at the rear end, a manual valve at the front end, cleaning inlet pipes on both sides at the top, sand removal channel inlet pipes on both outer ends, and a pressure detection instrument installed at the center of the top.

[0011] The cleaning inlet pipes are connected at their lower ends to the upper ends of the diversion valve blocks. Manual valves 1, 2, 3 and 4 are installed sequentially from top to bottom on the two cleaning inlet pipes. The upper ends of the cleaning inlet pipes are connected to the cleaning outlet shut-off valves.

[0012] Clean the outlet shut-off valve; the inlet shut-off valve is installed at the upper end; and the manual valve fourteen is connected to the side wall.

[0013] The upper end of the sand removal channel inlet pipe is connected to the outer end of the manual valve fourteen, and the lower end is connected to the outer ends of both sides of the diversion valve block.

[0014] The lower end of the sand cylinder connecting valve block is connected to two sand removal channel connecting pipes, with manual valve 10 and manual valve 11 installed in the center of each pipe respectively, and the lower end of each pipe is connected to a sand discharge manifold; the two sand discharge manifolds are connected to each other on the inner side by flanges, and the rear end of each manifold is connected to manual valve 9, and the front end of manual valve 9 is connected to a two-inch union inlet.

[0015] The 3-inch union inlet is vertically connected to the rear central interface of the diversion valve block via a flange. The front central interface of the diversion valve block is horizontally connected to the rear end of the manual valve via a flange. The front end of the manual valve is horizontally connected to the rear central interface of the main channel manifold valve body via a flange. The left and right interfaces of the main channel manifold valve body are respectively horizontally connected to one end of the two main discharge channel pipes via flanges. The other end of the main discharge channel pipe is connected to the lower end of the desanding cylinder via a manifold transition pipe and a flange. The front central interface of the main channel manifold valve body is vertically connected to the 3-inch union outlet via a flange.

[0016] Preferably, the diversion valve block is connected to the cleaning outlet shut-off valve via a flange through the cleaning inlet pipe; manual valves five, six, seven, and eight are installed sequentially along the pipelines of the two junction transition pipes.

[0017] Preferably, the two-inch union inlet is connected to manual valve nine via a flange, manual valve nine is connected to sand discharge manifold via a flange, sand discharge manifold is connected to sand removal channel connecting pipe via a flange, the two sand removal channel connecting pipes are respectively connected to sand cylinder connecting valve block via manual valve ten and manual valve eleven, and sand cylinder connecting valve block is connected to sand removal cylinder via a flange.

[0018] Preferably, the inlet shut-off valve is vertically installed above the cleaning outlet shut-off valve, and the cleaning outlet shut-off valve is connected to the front end of the sand cylinder connecting valve block via a flange; one end of the manual valve fourteen is connected to the side wall of the cleaning outlet shut-off valve, and the other end is connected to the diversion valve block via a flange through the sand removal channel inlet pipe; there are two manifold transition pipes, which are respectively connected to the lower ends of the two sand removal cylinders, and two valves are installed on the outer ends of each of them, namely manual valve five, manual valve six, manual valve seven and manual valve eight, and the other end is connected to the main discharge channel pipe; the main channel manifold valve body is installed at the connection of the two main discharge channel pipes, with a three-inch union outlet connected to its front end, a pressure transmitter installed at its upper end, and a manual valve connected to its rear end; an instrument control box is installed at the upper end of the main discharge channel pipe.

[0019] A transport skid, comprising:

[0020] A frame-type transport skid body, wherein a sand remover integrated module is installed at the lower internal end of the transport skid body;

[0021] The operating platform is installed inside the upper end of the transport skid body;

[0022] A ladder is installed on one side of the outer end of the transport skid body;

[0023] The lifting columns are guided and installed on both sides of the top of the transport skid body. The lower end of the lifting column is fitted with a pin shaft, and the upper end is fitted with a lifting ring.

[0024] Preferably, the top two sides of the transport skid body are provided with guide grooves, the lower end of the lifting column is inserted into the guide grooves, and the pin shaft passes through the guide grooves and the pin hole of the lifting column.

[0025] Preferably, the bottom end of the ladder is welded to the bottom frame of the transport sled body, and the top end extends to the side edge of the operating platform and is welded to it.

[0026] Preferably, the surface of the operating platform is provided with an operating window, which corresponds to the operating position of the sand remover integrated module.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] This invention features two parallel sand removal cylinders forming an independent sand removal channel. Combined with manual valves five, six, seven, and eight on the manifold transition pipe, and manual valves ten and eleven on the sand removal channel connecting pipe, the two cylinders can operate alternately. When the left sand removal cylinder needs to discharge sand, manual valves five and six are closed, and manual valve twelve on the sand discharge switching valve body side is opened for independent sand discharge. At this time, the right sand removal cylinder continues sand removal by keeping manual valves seven and eight open. Similarly, the left cylinder can operate independently during right-side maintenance, avoiding production interruptions caused by single-cylinder shutdowns. This is particularly suitable for scenarios with high continuous operation requirements, minimizing the impact on on-site production progress, and improving sand removal efficiency by more than 50% compared to single-cylinder equipment.

[0029] The pressure detection instrument at the upper end of the diversion valve block of this invention monitors the inlet pressure of the liquid to be treated and the cleaning liquid in real time, and the pressure transmitter at the upper end of the main channel manifold valve captures the confluence pressure of the clean liquid after sand removal. The two form an inlet and outlet pressure difference monitoring system, which can be centrally displayed through the instrument control box. Operators can intuitively judge the degree of blockage of the sand removal cylinder (if the pressure difference is too large, it indicates that cleaning is required). At the same time, the manual valve, as the main channel master control valve, can quickly cut off the liquid flow in emergency situations such as sudden pressure rise. In conjunction with the manual valves of each branch pipeline, it can realize graded pressure regulation, avoid safety accidents such as pipeline rupture and high-speed sand ejection caused by abnormal pressure, and provide dual safety protection for equipment and operators.

[0030] The sand removal cylinder cover of this invention is connected by a flange, allowing for quick disassembly for internal inspection and sand removal. The cleaning system consists of a graded control loop formed by the cleaning inlet pipe and four manual valves, enabling targeted flushing of any sand removal cylinder without disassembly. The flange connection design between the sand discharge switching valve body and the 2-inch union outlet facilitates quick connection and unblocking of the sand discharge pipeline. In addition, components such as the manifold transition pipe and the sand removal channel connecting pipe are all connected by flanges. When a certain pipeline or valve malfunctions, it can be disassembled and replaced individually without affecting the overall structure. This not only reduces the types of tools and operating steps required for maintenance but also reduces the reliance on the skills of professional maintenance personnel, shortening the single maintenance time to 1 / 3 of traditional equipment and reducing the average annual maintenance cost by more than 40%. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the integrated module structure of the sand remover of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the sand removal cylinder and the connecting pipe of the sand removal channel of the present invention;

[0034] Figure 4 This is a schematic diagram of the sand discharge switching valve body structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the main channel bus valve body and the diversion valve block structure of the present invention;

[0036] Figure 6 These are schematic diagrams of manual valves one through six of the present invention;

[0037] Figure 7 This is a schematic diagram of the two-inch union inlet structure of the present invention;

[0038] Figure 8 This is a schematic diagram of the transport skid body structure of the present invention.

[0039] In the diagram: 1. Three-inch juncture inlet; 2. Two-inch juncture inlet; 3. Manual valve; 4. Manual valve one; 5. Manual valve two; 6. Manual valve three; 7. Manual valve four; 8. Manual valve five; 9. Manual valve six; 10. Manual valve seven; 11. Manual valve eight; 12. Manual valve nine; 13. Manual valve ten; 14. Manual valve eleven; 15. Manual valve twelve; 16. Manual valve thirteen; 17. Manual valve fourteen; 18. Three-inch juncture outlet; 19. Two-inch juncture outlet; 20. Transport skid body; 21. Lifting column; 22. Excluded 23. Sand removal cylinder; 24. Sand cylinder cover; 25. Sand cylinder connecting valve block; 26. Cleaning inlet pipe; 27. Inlet shut-off valve; 28. Instrument control box; 29. ​​Sand removal channel inlet pipe; 30. Main discharge channel pipe; 31. Main channel manifold valve body; 32. Pressure transmitter; 33. Diverter valve block; 34. Pressure detection instrument; 35. Sand discharge switching valve body; 36. Cleaning outlet shut-off valve; 37. Sand removal channel connecting pipe; 38. Sand discharge manifold block; 39. Manifold transition pipe; 40. Operating platform; 41. Lifting ring; 42. Ladder. Detailed Implementation

[0040] 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.

[0041] Please see Figures 1-8As shown, the present invention provides a technical solution: a double-cylinder sand remover and a transport skid, wherein two parallel sand removal cylinders 23 serve as the core components for sand separation, realizing the centrifugal separation of sand particles in liquid; the upper sand cylinder cover 24 is used for sealing and maintenance; the front end of the sand cylinder connecting valve block 25 is connected to the upper end of the two sand removal cylinders 23, and the rear end is connected to the cleaning outlet shut-off valve 36, forming the main channel for the flow of cleaning fluid; the sand discharge switching valve body 35 is located at the lower end of the sand removal cylinder 23, and the manual valves 12 and 13 on both sides control the on / off of the single cylinder sand discharge, and the two-inch union outlet 19 at the sand discharge end realizes the external discharge of sand particles.

[0042] The diversion valve block 33 is the liquid distribution center: the three-inch union inlet 1 at the rear end receives the liquid to be treated, the manual valve 3 at the front end controls the opening and closing of the main channel, the cleaning inlet pipes 26 on both sides at the upper end distribute the cleaning liquid, the sand removal channel inlet pipes 29 at both outer ends transport the liquid to be treated to the sand removal cylinder, and the pressure detection instrument 34 at the upper center monitors the pipeline pressure in real time; the manual valves 4 to 7 on the cleaning inlet pipe 26 control the cleaning liquid flow rate in stages, and the upper end is connected to the cleaning outlet shut-off valve 36 to form a cleaning circuit.

[0043] The upper inlet stop valve 27 of the cleaning outlet stop valve 36 controls the total input of cleaning fluid, and the side wall manual valve 14 17 adjusts the flow rate of cleaning fluid returning to the sand removal channel inlet pipe 29; the two sand removal channel connecting pipes 37 control the connection between the sand removal cylinder 23 and the sand discharge manifold 38 through manual valve 10 13 and manual valve 11 14, and the sand discharge manifold 38 is connected to the two-inch union inlet 2 through manual valve 9 12, which can be connected to the auxiliary sand discharge medium.

[0044] Manual valves 5 to 8 on the manifold 39 control the flow of the desanded liquid to the main discharge channel pipe 30. The main channel manifold valve body 31 collects the treated liquid and discharges it through the front three-inch juncture outlet 18. The upper pressure transmitter 32 remotely transmits pressure data. The instrument control box 28 on the upper end of the main discharge channel pipe 30 realizes centralized instrument monitoring.

[0045] The transport skid is used to integrate and transport the aforementioned dual-cylinder desander (desander integration module 22): the frame-type transport skid body 20 provides the load-bearing foundation; the upper operating platform 40 matches the desander operating position, and the outer ladder 42 facilitates getting on and off the platform; the top two side hanging columns 21 adjust the position through guide grooves and pin shafts, and the upper hanging ring 41 realizes the overall hoisting; the operating window on the surface of the operating platform 40 corresponds to the desander operating point, improving the convenience of operation.

[0046] according to Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, two sand removal cylinders 23 are arranged side by side. The upper end of the sand cylinder cover 24 is installed via a flange, and the lower end is connected to the sand discharge switching valve body 35 and the manifold transition pipe 39 via flanges. The other end of the manifold transition pipe 39 is connected to the main discharge channel pipe 30 via a flange. At the same time, the upper end is also connected to the sand cylinder connecting valve block 25 via a flange. Centrifugal force is used to achieve efficient separation of sand particles in the liquid. The parallel arrangement of the two cylinders can improve the sand removal efficiency and can operate independently, so that maintenance or cleaning of one cylinder does not affect the overall sand removal operation. The sand cylinder cover 24 ensures its sealing performance and provides a convenient passage for internal maintenance. The lower end is connected to the sand discharge switching valve body 35 and the main discharge channel pipe 39 via flanges. The valve body 35 controls the discharge of separated sand particles, while the manifold 39 transports the desanded liquid to the main discharge channel 30. The two ends of the desanding channel connecting pipe 37 are connected to the lower end of the sand cylinder connecting valve block 25 and the sand discharge manifold 38 via flanges. Manual valves 10 and 11 are installed in the center. The inner sides of the sand discharge manifold 38 are interconnected via flanges, and the rear end is connected to manual valve 9 12 via a flange. The other end of manual valve 9 12 is connected to a two-inch union inlet 2 via a flange. The desanding channel connecting pipe 37 is the key connection channel between the desanding cylinder 23 and the sand discharge manifold 38, used to transfer the desanded liquid... The sand or liquid separated inside cylinder 23 is guided to the sand discharge manifold 38; manual valves 10 and 11 can independently control the opening and closing of their corresponding channels, realizing single-cylinder sand discharge control or channel switching. Together with the sand discharge manifold 38, the sand particles are concentrated and discharged. The two-inch union inlet 2 can be connected to external media to assist in sand discharge and improve the sand discharge effect. The upper end of the sand removal channel inlet pipe 29 is connected to the outer end of manual valve 14 17 via a flange, and the lower end is connected to the outer ends of both sides of the diversion valve block 33 via a flange. The other end of manual valve 14 17 is connected to the side wall of the cleaning outlet shut-off valve 36 via a flange. The rear end of the diversion valve block 33 is connected to... The three-inch union inlet 1 and the sand removal channel inlet pipe 29 serve the dual function of conveying the liquid to be treated and the cleaning liquid. The liquid to be treated can enter the diversion valve block 33 through the three-inch union inlet 1, and then be conveyed to the subsequent related structures to participate in the sand removal process through the sand removal channel inlet pipe 29. The cleaning liquid can enter the sand removal channel inlet pipe 29 through the cleaning outlet shut-off valve 36 and the manual valve 14, and then be distributed to the corresponding positions by the diversion valve block 33 to realize the cleaning operation. The manual valve 14 can adjust the flow rate of the liquid flowing through the pipe, and the pressure detection instrument 34 at the upper center of the diversion valve block 33 can monitor the pressure inside the pipe in real time to ensure that the liquid inlet process is stable and controllable.

[0047] according to Figure 1 and Figure 4As shown, manual valve 12 15 is installed on one side of the outer end of the sand discharge switching valve body 35, and the other end is connected to the inner side of one of the sand removal cylinders 23 through a pipe. It is connected to the sand discharge switching valve body 35 and the sand removal cylinder 23 by flange. Manual valve 13 16 is installed on the other side of the outer end of the sand discharge switching valve body 35, symmetrically distributed with manual valve 12 15. The other end is connected to the inner side of another sand removal cylinder 23 through a pipe. It is connected to the sand discharge switching valve body 35 and the sand removal cylinder 23 by flange. It is used to manually control the opening and closing of the sand discharge channel between the other sand removal cylinder 23 and the sand discharge switching valve body 35, realize the independent control of the dual-cylinder sand discharge, and ensure the sand discharge flexibility when the dual cylinders are running alternately or the single cylinder is operating.

[0048] The sand discharge switching valve body 35 is located at the lower end of the two sand removal cylinders 23. Its outer ends are connected to manual valves 12 (15) and 13 (16) respectively via pipes. The sand discharge end is connected to a two-inch union outlet 19 via a pipe. It is flanged to the sand removal cylinders 23, the two manual valves, and the outlet. The sand discharge switching valve body 35 is responsible for concentrating and distributing the sand discharge path. By coordinating the opening and closing of manual valves 12 (15) and 13 (16), the sand discharge process of the two sand removal cylinders 23 is switched and integrated. The separated sand particles are collected and discharged through the two-inch union outlet 19, ensuring an orderly and efficient sand discharge process.

[0049] The 2-inch union outlet 19 is connected to the sand discharge end of the sand discharge switching valve body 35. It adopts a flange connection and can be quickly connected to the external sand discharge pipeline. The 2-inch union outlet 19 can efficiently discharge the sand particles collected by the sand discharge switching valve body 35 to the equipment, ensuring the stable realization of the sand discharge function of the sand remover, while facilitating the installation and disassembly of the pipeline.

[0050] according to Figure 1 and Figure 5As shown, the main channel manifold valve body 31 is installed at the connection of the two main discharge channel pipes 30. The front end is vertically connected to the 3-inch union outlet 18 via a flange, and the rear end is horizontally connected to the front end of the manual valve 3 via a flange. The left and right side interfaces are respectively horizontally connected to one end of the two main discharge channel pipes 30 via flanges. A pressure transmitter 32 is installed at the upper end. Its function is to serve as the core component for the manifold of the desanded liquid. It can collect and gather the desanded liquid transported by the two main discharge channel pipes 30, and then discharge it through the 3-inch union outlet 18 at the front end. The manual valve 3 connected at the rear end can control the opening and closing of the main channel. The pressure transmitter 32 at the upper end can monitor the liquid pressure after the manifold in real time, ensuring the stability and controllability of the liquid transport in the main channel. The rear end of the diversion valve block 33 is vertically connected to the three-inch union inlet 1 via a flange, and the front end is horizontally connected to the rear end of the manual valve 3 via a flange. The upper two sides are connected to the cleaning inlet pipe 26 via flanges, and the outer ends of both sides are connected to the sand removal channel inlet pipe 29 via flanges. A pressure detection instrument 34 is installed in the center of the upper end. Its function is to act as a diversion hub after the liquid enters the system. It can distribute the liquid to be treated that enters through the three-inch union inlet 1. Part of it is delivered to the main channel manifold valve body 31 through the manual valve 3 connected to the front end, and the other part participates in the sand removal process through the sand removal channel inlet pipe 29 on both outer ends. At the same time, it can receive the cleaning liquid delivered by the cleaning inlet pipe 26 and distribute it to realize the system cleaning function. The pressure detection instrument 34 in the center of the upper end can monitor the liquid pressure in the valve block in real time to ensure the stability of the diversion process.

[0051] according to Figure 6As shown, manual valve 4 is installed on the cleaning inlet pipe 26 on one side, arranged sequentially from top to bottom. Its two ends are connected to the upper and lower sections of the cleaning inlet pipe 26 via flanges. Its function is to control the on / off state of that section of the cleaning inlet pipe 26, regulating the flow rate of the cleaning fluid, and working with other valves to control the cleaning channel on one side. Manual valve 5 is located below manual valve 4 and is also installed on the cleaning inlet pipe 26 on the same side, with its two ends connected to the upper and lower sections of the pipe via flanges. Its function is to work in conjunction with manual valve 4 to further refine the flow control of the cleaning inlet pipe 26 on that side, enhancing the flexibility of the cleaning process. Manual valve 6 is installed on the cleaning inlet pipe 26 on the other side, arranged from top to bottom, with its two ends connected to the upper and lower sections of the pipe via flanges. Its function is to control the on / off state of the corresponding section of the cleaning inlet pipe 26 on that side, working with other valves on the same side to achieve independent control of the cleaning channel on that side, ensuring separate operation of the dual-cylinder cleaning process. Manual valve 4 (7) is located below manual valve 3 (6) and installed on the cleaning inlet pipe 26 on the other side. Its two ends are connected to the upper and lower sections of the pipe via flanges. Its function is to assist manual valve 3 (6) in regulating the cleaning fluid flow on this side, improving the control precision of the cleaning channel, and ensuring the cleaning effect. Manual valve 5 (8) is installed on one of the manifold transition pipes 39, arranged sequentially along the pipeline, and its two ends are connected to the upper and lower sections of the manifold transition pipe 39 via flanges. Its function is to control the on / off state of that section of the manifold transition pipe 39, regulating the liquid flow from the sand removal cylinder 23 to the main discharge channel pipe 30, achieving independent control of the liquid delivery after single-cylinder sand removal. Manual valve 6 (9) is located beside manual valve 5 (8) and installed on the same manifold transition pipe 39, with its two ends connected to the upper and lower sections of the pipe via flanges. Its function is to cooperate with manual valve 5 (8) to further regulate the liquid flow in the manifold transition pipe 39, ensuring a stable and controllable delivery of the desanded liquid to the main discharge channel pipe 30.

[0052] according to Figure 8As shown, the frame-type transport skid body 20 is the main frame of the transport skid. The lower internal end is equipped with a desander integrated module 22, i.e., a double-cylinder desander. The upper internal end is equipped with an operating platform 40, and one side of the outer end is equipped with a ladder 42. Guide grooves are provided on both sides of the top for installing the lifting columns 21. Its function is to support all components, realizing integrated transportation and operational support for the desander equipment. The lifting columns 21 are guided and installed on both sides of the top of the transport skid body 20. The lower end is inserted into the guide groove, and the pin shaft passes through the groove and is fixed to the pin hole of the lifting column. The upper end is fitted with a lifting ring 41. Its function is to adjust the position through the guide, and in conjunction with the lifting ring 41, to achieve the overall lifting of the transport skid, facilitating equipment transfer and installation. The desander integrated module 22 is installed inside the lower end of the transport skid body 20; its function is to serve as the core working unit of the transport skid, undertaking liquid desandering operations. The operating platform 40 is installed inside the upper end of the transport skid body 20, and its surface has an operating window corresponding to the operating position of the desander integrated module 22; its function is to provide operating space for operators, and the operating window facilitates direct operation and maintenance of the desander. The lifting ring 41 is fitted onto the upper end of the lifting column 21; its function is to connect the lifting equipment and is a key connecting component for the lifting column to realize the lifting function of the transport skid. The ladder 42 is installed on one side of the outer end of the transport skid body 20, with its bottom end welded to the bottom frame of the body and its top end extending to the side edge of the operating platform 40 and welded; its function is to provide a passage for operators to go up and down the operating platform, and the welded connection ensures safe passage.

[0053] The overall effect achieved by the organization is as follows:

[0054] The liquid to be treated (containing sand) enters the diversion valve block 33 through the three-inch union inlet 1. The diversion valve block 33, acting as the liquid distribution center, divides the liquid flow into two paths. One path enters the main channel manifold valve body 31 through the manual valve 3 connected at the front end, while the other path is transported to two parallel sand removal cylinders 23 through the sand removal channel inlet pipes 29 on both outer ends. The liquid to be treated entering the sand removal cylinder 23 rotates at high speed along the cylinder wall, using centrifugal force to separate the sand particles from the liquid. The denser sand particles are thrown against the cylinder wall and sink to the lower end of the sand removal cylinder 23. The clear liquid after sand removal collects. The liquid flows upward from the center of the cylinder to the upper end of the desanding cylinder 23, and then enters the sand cylinder connecting valve block 25. Subsequently, it flows through the manifold transition pipe 39. The manual valves 8, 9, 10, and 11 on the manifold transition pipe 39 control the flow of the clean liquid to the main discharge channel pipe 30. Finally, it is collected by the main channel manifold valve body 31 and discharged through the three-inch union outlet 18 at the front end. The pressure transmitter 32 installed at the upper end of the main channel manifold valve body 31 monitors the liquid pressure after the manifold in real time to ensure stable delivery of the clean liquid. After separation, the sand particles enter the sand discharge switching valve body 35 through the lower end of the sand removal cylinder 23. The manual valves 12.15 and 13.16 on both sides of the outer end of the sand discharge switching valve body 35 control the sand discharge channels of the two sand removal cylinders 23 respectively. The sand particles are discharged through the two-inch union outlet 19 at the sand discharge end of the sand discharge switching valve body 35. At the same time, the auxiliary sand discharge medium can be connected through the two-inch union inlet 2, enter the sand discharge manifold block 38 through the manual valve 9.12, and then enter the sand cylinder connecting valve block 25 through the sand removal channel connecting pipe 37 (the manual valves 10.13 and 11.14 in the center of the pipe control the on and off). This helps to push the sand particles in the sand removal cylinder 23 to be discharged, thereby improving the sand discharge efficiency. During the cleaning process, the cleaning fluid enters the cleaning outlet stop valve 36 through the inlet stop valve 27 at the upper end of the cleaning outlet stop valve 36. Part of it flows into the diversion valve block 33 through the cleaning inlet pipe 26 (with manual valves 4, 5, 6, and 7 installed sequentially from top to bottom along the pipe to control the flow rate). The other part flows back to the diversion valve block 33 through the manual valve 17 connected to the side wall of the cleaning outlet stop valve 36 and the sand removal channel inlet pipe 29, thus achieving cyclic cleaning of the sand removal channel and sand removal cylinder 23. The pressure detection instrument 34 installed at the center of the upper end of the diversion valve block 33 monitors the cleaning fluid pressure in real time to ensure the cleaning effect. The dual-cylinder design can achieve single-cylinder operation or dual-cylinder parallel operation through corresponding valve control. When one sand removal cylinder 23 needs maintenance, closing its corresponding manual valve will switch to the operation of the other cylinder without interrupting the overall sand removal process.The transport skid serves as the integrated carrier, with the frame-type transport skid body 20 carrying the desander integrated module 22 (i.e., the double-cylinder desander). Operators can enter the upper internal operating platform 40 via the ladder 42 on one side of the outer end of the transport skid body 20. They can then use the operating windows on the surface of the operating platform 40, which correspond to the operating positions of the desander integrated module 22, to perform valve control, pressure monitoring, and other operations. The lifting columns 21 on both sides of the top of the transport skid body 20 are adjusted in position via guide grooves and pin shafts, and the lifting rings 41 fitted at the upper end enable overall lifting and transportation, ensuring the stability and convenience of the equipment during transportation and operation.

[0055] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-cylinder sand remover, characterized in that, include: Two sand removal cylinders (23) are arranged side by side, and each sand removal cylinder (23) is equipped with a sand cylinder cover (24) at its upper end. The sand cylinder connecting valve block (25) is connected to the upper ends of the two sand removal cylinders (23) at its front end and to the cleaning outlet shut-off valve (36) at its rear end. The sand discharge switching valve body (35) is located at the lower end of the two sand discharge cylinders (23). Manual valve twelve (15) and manual valve thirteen (16) are respectively installed on both sides of its outer end. The other ends of manual valve twelve (15) and manual valve thirteen (16) are respectively connected to the inner side of the sand discharge cylinder (23), and its sand discharge end is connected to a two-inch union outlet (19). The diversion valve block (33) has a three-inch union inlet (1) at its rear end and a manual valve (3) at its front end. Cleaning inlet pipes (26) are connected to both sides of the upper end, and sand removal channel inlet pipes (29) are connected to the outer ends of both sides. A pressure detection instrument (34) is installed in the center of the upper end. The cleaning inlet pipe (26) is connected to the upper end of the diversion valve block (33) respectively. Manual valve 1 (4), manual valve 2 (5), manual valve 3 (6) and manual valve 4 (7) are installed in the two cleaning inlet pipes (26) in the direction from top to bottom respectively. The upper end of the cleaning inlet pipe (26) is connected to the cleaning outlet shut-off valve (36). Cleaning outlet stop valve (36), with an inlet stop valve (27) installed at the upper end, and manual valve fourteen (17) connected to the side wall; The sand removal channel inlet pipe (29) is connected at its upper end to the outer end of the manual valve fourteen (17) and at its lower end to the outer ends of both sides of the diversion valve block (33); The lower end of the sand cylinder connecting valve block (25) is connected to two sand removal channel connecting pipes (37), and manual valve ten (13) and manual valve eleven (14) are respectively installed in the center of each pipe. The lower end of each pipe is connected to a sand discharge manifold (38). The two sand discharge manifolds (38) are connected to each other through flanges on their inner sides. The rear end of each manifold is connected to a manual valve nine (12), and the front end of the manual valve nine (12) is connected to a two-inch union inlet (2). The three-inch union inlet (1) is vertically connected to the rear central interface of the diversion valve block (33) via a flange. The front central interface of the diversion valve block (33) is horizontally connected to the rear end of the manual valve (3) via a flange. The front end of the manual valve (3) is horizontally connected to the rear central interface of the main channel manifold valve body (31) via a flange. The left and right interfaces of the main channel manifold valve body (31) are horizontally connected to one end of the two main discharge pipes (30) via flanges. The other end of the main discharge pipe (30) is connected to the lower end of the sand removal cylinder (23) via a manifold transition pipe (39) via a flange. The front central interface of the main channel manifold valve body (31) is vertically connected to the three-inch union outlet (18) via a flange.

2. The double-cylinder sand remover according to claim 1, characterized in that: The diversion valve block (33) is connected to the cleaning outlet shut-off valve (36) via a flange through the cleaning inlet pipe (26); manual valve five (8), manual valve six (9), manual valve seven (10), and manual valve eight (11) are installed sequentially along the pipelines of the two junction transition pipes (39).

3. The double-cylinder sand remover according to claim 2, characterized in that: The two-inch union inlet (2) is connected to manual valve nine (12) via a flange. Manual valve nine (12) is connected to sand discharge manifold (38) via a flange. Sand discharge manifold (38) is connected to sand removal channel connecting pipe (37) via a flange. The two sand removal channel connecting pipes (37) are connected to sand cylinder connecting valve block (25) via manual valve ten (13) and manual valve eleven (14) respectively. Sand cylinder connecting valve block (25) is connected to sand removal cylinder (23) via a flange.

4. The double-cylinder sand remover according to claim 3, characterized in that: The inlet shut-off valve (27) is vertically installed on the upper end of the cleaning outlet shut-off valve (36), and the cleaning outlet shut-off valve (36) is connected to the front end of the sand cylinder connecting valve block (25) through a flange; one end of the manual valve fourteen (17) is connected to the side wall of the cleaning outlet shut-off valve (36), and the other end is connected to the diversion valve block (33) through a flange via the sand removal channel inlet pipe (29); there are two manifold transition pipes (39), which are respectively connected to the lower ends of the two sand removal cylinders (23), and each of their outer ends is equipped with There are two valves, namely manual valve five (8), manual valve six (9), manual valve seven (10) and manual valve eight (11), and the other end is connected to the main discharge channel pipe (30); the main channel manifold valve body (31) is installed at the connection of the two main discharge channel pipes (30), the front end of which is connected to a three-inch union outlet (18), the upper end of which is equipped with a pressure transmitter (32), and the rear end is connected to a manual valve (3); the upper end of the main discharge channel pipe (30) is equipped with an instrument control box (28).

5. A transport skid, characterized in that, include: A frame-type transport skid body (20) is provided, wherein a sand remover integrated module (22) is installed at the lower end of the interior of the transport skid body (20), and the sand remover integrated module (22) is a double-cylinder sand remover as described in any one of claims 1-4; An operating platform (40) is installed inside the upper end of the transport skid body (20); A ladder (42) is installed on one side of the outer end of the transport skid body (20); The lifting column (21) is guided and installed on both sides of the top of the transport skid body (20). The lower end of the lifting column (21) is fitted with a pin shaft, and the upper end is fitted with a lifting ring (41).

6. The transport skid according to claim 5, characterized in that: The top two sides of the transport skid body (20) are provided with guide grooves, the lower end of the lifting column (21) is inserted into the guide groove, and the pin shaft passes through the guide groove and the pin hole of the lifting column (21).

7. The transport skid according to claim 6, characterized in that: The bottom end of the ladder (42) is welded to the bottom frame of the transport sled body (20), and the top end extends to the side edge of the operating platform (40) and is welded to it.

8. The transport skid according to claim 7, characterized in that: The surface of the operating platform (40) is provided with an operating window, which corresponds to the operating position of the sand remover integrated module (22).

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