A self-settling sand separation device for shale gas extraction

Abstract

The present application relates to a separation device, specifically to a self-sanding separation device for shale gas exploitation; the separation device includes a fixed component, a filter component, and a sand removal component; the fixed component includes a tank body, an air outlet pipe, and an air inlet pipe, the tank body is an elliptical body, the tank body is installed in a direction perpendicular to the ground, one side of the top of the tank body is fixedly connected to the air outlet pipe, the other side of the top of the tank body is fixedly connected to the air inlet pipe, the air outlet pipe is an L-shaped pipe, the short pipe end of the air outlet pipe is provided with a filter component, the air inlet pipe is a cylindrical body, and the bottom side of the air inlet pipe is fixedly connected to the sand removal component. The present invention optimizes and improves the sand removal component, reduces the maintenance cost of the equipment, improves the sand removal effect of the equipment, and solves the problem that the equipment cannot quickly and effectively separate solid particles and liquids in the gas during use.

Description

Technical Field

[0001] The invention relates to a separation device, in particular to a self-sand separation device used for shale gas exploitation. Background Art

[0002] Shale gas is an unconventional natural gas that is hidden in shale or mudstone layers in a free or adsorbed state. Its main component is methane. The formation and enrichment of shale gas have their own characteristics. It is often distributed in thick and widely distributed shale source rock formations in the basin. Due to the low porosity and extremely low permeability of shale, the mining process is extremely difficult. Therefore, in the process of shale gas mining, special technologies and equipment are needed to improve mining efficiency and product purity. In the process of shale gas mining, as the gas is mined, a large amount of solid particles and liquids will be carried out. If these impurities directly enter the gas transmission pipeline or processing equipment, they will cause serious blockage and wear problems, which will not only affect the mining efficiency, but also may cause safety hazards. The existing sand removal device cannot quickly and effectively separate the solid particles and liquids in the gas. Summary of the invention

[0003] The embodiment of the present application provides a self-sand separation device for shale gas extraction. During use, the sand removal device cannot quickly and effectively separate solid particles and liquid in the gas.

[0004] The embodiment of the present application provides a self-sand separation device for shale gas extraction, characterized in that it includes a fixing component, a filtering component, and a sand removal component; The fixed assembly includes a tank body, an air outlet pipe, and an air inlet pipe; The tank body is an elliptical body, the installation direction of the tank body is perpendicular to the ground, one side of the top of the tank body is fixedly connected to an air outlet pipe, and the other side of the top of the tank body is fixedly connected to an air inlet pipe; The air outlet pipe is an L-shaped pipe; The short pipe end of the air outlet pipe is provided with a filter assembly; The air inlet pipe is a cylindrical body, and a sand removal component is fixedly connected to one side of the bottom of the air inlet pipe; The sand removal assembly includes a filter cartridge; The filter cartridge is fixedly connected to the bottom of the air inlet pipe, the filter cartridge is a cone, and a flow divider cartridge is fixedly connected to the filter cartridge; The filter cartridge is in direct contact with the ash sand and is made of an alloy steel material with high surface hardness and wear resistance. The filter cartridge is not easy to wear and can maintain stable anti-wear performance; The main function of the filter cartridge is to guide the airflow to the top of the cone to form a swirl. The swirl can enhance the gas-solid separation effect, so that the ash, sand and other debris can be more effectively gathered under the action of centrifugal force, thereby improving the separation efficiency. The diverter tube is a cone; The sand removal assembly also includes a first diverter plate and a second diverter plate; The first diverter plate and the second diverter plate are both fixedly connected to the two sides of the diverter tube, and the first diverter plate is a rectangular body; The second diverter plate is a rectangular body; The first and second splitter plates are in direct contact with ash and sand in a harsh environment, so they are made of alloy steel material with good wear resistance and high mechanical strength, and can maintain stable wear resistance; The first splitter plate and the second splitter plate can increase the contact area and contact time between the airflow and the silt, thereby improving the capture efficiency of the silt; An air inlet hole is provided on one side surface of the second diverter plate; The air inlet is a circular hole; The other side surface of the second diverter plate is fixedly connected with an air bag body; The airbag body is an arched body; The sand removal assembly also includes a sand guide rope; The sand guiding rope is arranged on the first diverter plate and the second diverter plate at a side away from the diverter tube, and the sand guiding rope is a long strip; The sand guide rope is in direct contact with the gray sand in a harsh environment, so it is made of nylon fiber material with strong toughness and high tensile strength, and can maintain stable performance during long-term use; The filtering assembly includes a desander, a purification pipe, an exhaust pipe, a liquid discharge pipe, a first sewage discharge pipe, a fluid pipe, and a second sewage discharge pipe; The desander is fixedly connected to the side of the air outlet pipe inside the tank body, the desander is a rectangular body, and there is a cavity inside the desander; A purification tube is arranged in the cavity; The purification pipe is a cylindrical body, and the top of the purification pipe is fixedly connected with an exhaust pipe; The exhaust pipe is cylindrical, and the bottom of the purification pipe is fixedly connected with a drain pipe; The liquid discharge pipe is a cylindrical body, and a first sewage discharge pipe is provided at the bottom of the desander; There is a gap between the desander and the first sewage pipe, and the first sewage pipe is a cylindrical body; The top end of the first sewage pipe is fixedly connected with a fluid pipe; The fluid pipe is a cylindrical body, and one end of the fluid pipe away from the first sewage pipe is fixedly connected to the second sewage pipe; The second sewage pipe is a cylindrical body; There is a gap between the first splitter plate and the second splitter plate; There is a gap between the second sewage pipe and the air inlet pipe; The diameters of the first sewage pipe and the second sewage pipe are greater than the diameter of the fluid pipe.

[0005] The coordinated use of the filter cartridge, diverter plate and sand guide rope forms a synergistic effect. The filter cartridge provides efficient filtering and separation functions, the diverter plate optimizes airflow distribution and enhances separation effect, and the sand guide rope further guides the airflow to form swirl movement, thereby improving sand removal efficiency and being able to adapt to sand removal needs under different working conditions. Regardless of changes in airflow intensity, solid particle concentration or particle size, the sand removal component can maintain efficient sand removal performance through automatic adjustment and synergy. Since the design of the diverter plate and the sand guide rope is relatively simple and easy to disassemble, the sand removal component also has great advantages in maintenance. Operators can easily check and replace filter cartridges, clean diverter plates, sand guide ropes and other components to ensure continued efficient operation of the sand removal component. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the sand removal component of the present invention; Figure 3 It is a structural schematic diagram of the sand removal assembly of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the first diverter plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the second diverter plate of the present invention.

[0007] In the figure: 100, fixed assembly; 110, tank body; 120, air outlet pipe; 130, air inlet pipe; 200, filter assembly; 210, desander; 220, purification pipe; 230, exhaust pipe; 240, drain pipe; 250, first sewage pipe; 260, fluid pipe; 270, second sewage pipe; 300, sand removal assembly; 310, filter cartridge; 311, diverter cartridge; 320, non-airbag diverter plate; 321, airbag diverter plate; 322, air inlet hole; 323, airbag body; 330, sand guide rope. DETAILED DESCRIPTION

[0008] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0009] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0010] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0011] See also Figure 1 , which is a schematic diagram of a three-dimensional structure of the present invention; the present application optimizes and improves a self-sanding separation device for shale gas exploitation in the prior art, and the filter cartridge is a conical cartridge that can form a cyclone, and uses centrifugal force to separate solid particles in the gas, thereby enhancing the separation effect. The sand removal component has improved the ability to capture fine particles. The filter area of ​​the conical cartridge is relatively large, and it can accommodate more filter media, thereby improving the filtration efficiency. At the same time, the cyclone effect also helps to prevent the filter media from being blocked and prolong the service life. The first diverter plate and the second diverter plate can reasonably distribute and guide the airflow, ensure that the airflow passes through the filter cartridge evenly, and improve the sand removal efficiency. At the same time, the airbag is inflated by the airflow passing through the pores, and the angle and position of the diverter plate can be automatically adjusted according to the airflow intensity to further optimize the airflow distribution. The air inlet and airbag design on the diverter plate can also generate local turbulence, which helps to separate solid particles in the gas from the airflow and improve the separation effect of the sand removal component. After the first diverter plate, the second diverter plate and the filter cartridge converge, the sand guide rope can further guide the airflow to form a cyclone movement. It helps to guide the solid particles in the gas to the center of the filter cartridge, improving the sand removal efficiency. The swirl guiding effect of the sand guide rope can also prevent the separated solid particles from being carried away by the air flow again, thus ensuring the efficient operation of the sand removal component. Example 1

[0012] like Figures 1 to 3 As shown, the present application discloses a self-sand separation device for shale gas extraction, comprising a fixing assembly 100, a filtering assembly 200, and a sand removal assembly 300; The fixing assembly 100 includes a tank body 110, an air outlet pipe 120, and an air inlet pipe 130; The tank body 110 is an elliptical body, and the installation direction of the tank body 110 is perpendicular to the ground; An air outlet pipe 120 is fixedly connected to one side of the top of the tank body 110; The other side of the top of the tank body 110 is fixedly connected to an air intake pipe 130; The air outlet pipe 120 is an L-shaped pipe, and a filter assembly 200 is disposed at the short pipe end of the air outlet pipe 120; The air inlet pipe 130 is a cylindrical body, and a sand removal assembly 300 is fixedly connected to one side of the bottom of the air inlet pipe 130; The sand removal assembly 300 includes a filter cartridge 310; The filter cartridge 310 is fixedly connected to the bottom of the air inlet pipe 130, and the filter cartridge 310 is a cone; The filter cartridge 410 is in direct contact with the ash sand and is made of an alloy steel material with high surface hardness and wear resistance. The filter cartridge is not easy to wear and can maintain stable anti-wear performance; The main function of the filter cartridge 410 is to guide the airflow to blow toward the top of the cone to form a swirl. The swirl can enhance the gas-solid separation effect, so that the ash and sand and other debris can be more effectively gathered under the action of centrifugal force, thereby improving the separation efficiency. The filter cartridge 310 is fixedly connected with a diversion cartridge 311; The diverter tube 311 is a cone; The filter assembly 200 includes a desander 210, a purification pipe 220, an exhaust pipe 230, a liquid discharge pipe 240, a first sewage discharge pipe 250, a fluid pipe 260, and a second sewage discharge pipe 270; The desander 210 is fixedly connected to the side of the gas outlet pipe 120 inside the tank 110, and the desander 210 is a rectangular body; The desander 210 has a cavity inside; A purification tube 220 is provided in the cavity; The purification pipe 220 is a cylindrical body, and the top of the purification pipe 220 is fixedly connected to the exhaust pipe 230; The exhaust pipe 230 is a cylindrical body, and the bottom of the purification pipe 220 is fixedly connected with a drain pipe 240; The liquid discharge pipe 240 is a cylindrical body, and a first sewage discharge pipe 250 is provided at the bottom of the desander 210; There is a gap between the desander 210 and the first sewage pipe 250; The first sewage pipe 250 is a cylindrical body, and the top of the first sewage pipe 250 is fixedly connected to the fluid pipe 260; The fluid tube 260 is a cylindrical body; One end of the fluid pipe 260 away from the first sewage pipe 250 is fixedly connected to a second sewage pipe 270, and the second sewage pipe 270 is a cylindrical body; There is a gap between the first splitter plate 320 and the second splitter plate 321; There is a gap between the second sewage pipe 270 and the air intake pipe 130; The diameters of the first sewage pipe 250 and the second sewage pipe 270 are greater than the diameter of the fluid pipe 260 .

[0013] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: The filter cartridge 410 is in the shape of a cone, which can guide the airflow to blow toward the top of the cone to form a swirl. The swirl effect can enhance the gas-solid separation effect, so that the ash and sand and other debris can be more effectively gathered under the action of centrifugal force, thereby improving the separation efficiency. The swirl effect also helps to reduce the clogging of the filter cartridge 410. Since the ash and sand and other debris are effectively gathered and discharged, the patency of the cone-shaped filter cartridge 410 is maintained, which prolongs the service life of the equipment. The cone-shaped filter cartridge 410 helps to achieve uniform distribution of airflow. When the airflow passes through the filter cartridge 410, its speed and direction are adjusted, so that the airflow passes through the filter material more evenly, improving the sand removal effect. The optimized airflow distribution also helps to reduce pressure loss. During the sand removal process, airflow will generate a certain resistance when passing through the filter material, and the filter cartridge 410 can reduce this resistance, reduce pressure loss, and improve the operating efficiency of the equipment. The conical filter cartridge 410 is suitable for a variety of powder sand characteristics and working conditions. Whether it is fine gray sand particles or larger debris fragments, they can be effectively separated under the guidance of the filter cartridge 410. Since the conical filter cartridge 410 can reduce problems such as blockage and pressure loss, the operation of the equipment is more stable and reliable. This helps to reduce the maintenance cost of the equipment and improve production efficiency. The conical filter cartridge 410 makes it easier to gather and discharge gray sand and other debris. During the cleaning process, it is only necessary to remove the debris gathered on the cylinder wall without the need for complex disassembly and cleaning of the entire filter cartridge 410. Since the conical design of the filter cartridge 410 improves separation efficiency and reduces blockage, the maintenance workload of the equipment is also reduced accordingly, which helps to reduce maintenance costs and improve equipment utilization. Example 2

[0014] In order to further improve the applicability and convenience of the use of the self-sand separation device for shale gas extraction in the present application, the embodiment of the present application optimizes and improves the interior of the filter cartridge, specifically: like Figure 4 As shown, the sand removal assembly 300 further includes a first diverter plate 320 and a second diverter plate 321; The first splitter plate 320 and the second splitter plate 321 are both fixedly connected to the two sides of the splitter cylinder 311; The first diverter plate 320 is a rectangular body; The second diverter plate 321 is a rectangular body; The first splitter plate 320 and the second splitter plate 321 are made of alloy steel material with good wear resistance and high mechanical strength because they are in direct contact with ash and sand in a harsh environment, and can maintain stable wear resistance; An air inlet hole 322 is formed on one side surface of the second diverter plate 321; The air inlet hole 322 is a circular hole, and the other side surface of the second diverter plate 321 is fixedly connected to an air bag body 323; The airbag body 323 is an arched body.

[0015] The tail ends of the first diverter plate 320 and the second diverter plate 321 are plastic sheets, which will swing when the airflow blows. The first diverter plate 320 and the second diverter plate 321 are evenly spaced. In addition, an air inlet hole 322 is provided on one side surface of the second diverter plate 321, and an air bag body 323 is provided on the other side surface. The second diverter plate 321 can be inflated to control the airflow and the swing amplitude. The swing of the plastic sheet under the blowing of the airflow can increase the contact area and contact time between the airflow and the silt, thereby improving the capture efficiency of the silt. The turbulence generated by the swing also helps to shake off the silt attached to the surface of the diverter plate to avoid blockage. The uniform spacing between the first diverter plate 320 and the second diverter plate 321 can ensure that the airflow is evenly distributed in the entire sand removal assembly 300, reduce blind spots, and improve the uniformity and comprehensiveness of sand removal. The airbag 323 of the second diverter plate 321 is inflated by the airflow passing through the air hole, so that the diverter plate can be adaptively adjusted according to the intensity and direction of the airflow to maintain a stable sand removal effect. By adjusting the airflow and swing amplitude, the overall separation performance of the self-sand separation device can be optimized. The design of swing and inflation control helps to reduce the accumulation of silt on the diverter plate, thereby reducing the risk of blockage and ensuring the stable operation of the equipment. By reducing blockage and optimizing airflow distribution, the wear and corrosion rate of the diverter plate and the sand removal assembly 300 can be reduced, and the service life of the equipment can be extended. The design of the sand removal assembly 300 enables the self-sand separation device to adapt to the shale gas extraction needs under various working conditions, whether it is an environment with high silt concentration or a situation with a wide distribution of silt particle size, it can maintain a good sand removal effect. The design of the swing and inflation control also facilitates maintenance and cleaning of the equipment, reducing maintenance costs and downtime. Example 3

[0016] In order to further improve the applicability and convenience of the use process of the self-sand separation device for shale gas extraction in the present application, the embodiment of the present application optimizes and improves the diverter plate, specifically: like Figure 5 As shown, the sand removal assembly 300 further includes a sand guiding rope 330; The sand guiding rope 330 is arranged on the side of the first diverter plate 320 and the second diverter plate 321 away from the diverter tube 311, and the sand guiding rope 330 is a long strip; The sand guiding rope 330 is made of a nylon fiber material with high toughness and tensile strength because it is in direct contact with sand in a harsh environment, and can maintain stable performance during long-term use.

[0017] The sand guide rope 330 allows the sand to be further guided to form a swirl after passing through the first diverter plate 320, the second diverter plate 321 and the filter cartridge 310. This swirl movement helps to increase the contact area and time between the sand and the sand removal assembly 300, and improve the sand capture efficiency. By guiding the sand to move in a swirl, the escape of sand during the sand removal process can be reduced, ensuring that more sand is effectively separated and collected. The swirl movement of the sand can increase its residence time in the sand removal assembly 300 and the contact opportunity with the sand removal medium, thereby improving the sand removal effect, so that the self-settling sand separation device can maintain efficient sand removal performance when processing high-concentration sand. The setting of the sand guide rope 330 enables the sand removal assembly 300 to adapt to the processing requirements of sand with different particle sizes and concentrations. By adjusting the swirl intensity and path, the sand removal effect can be optimized to meet the diversified sand removal requirements in the shale gas extraction process. The swirl movement of the sand helps to reduce the accumulation and blockage of sand inside the sand removal assembly 300, thereby reducing equipment failure rate and maintenance. Cost, by optimizing the gravel guide path and improving the sand removal efficiency, the wear and corrosion rate of the sand removal component 300 can be reduced, the service life of the equipment is extended, and the reliability and stability of the equipment are improved. The setting of the sand guide rope 330 simplifies the operation process of the sand removal component 300. The operator can optimize the gravel guide path and the sand removal effect by adjusting the position and tension of the sand guide rope 330 without complicated adjustment and maintenance operations. The swirling movement of the gravel makes it easier for the operator to monitor the working status of the sand removal component 300 and the gravel processing effect, discover and solve problems in time, and reduce the difficulty and cost of maintenance.

[0018] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-sand separation device for shale gas extraction, characterized in that: It comprises a fixing component (100), a filtering component (200), and a sand removal component (300); The fixing assembly (100) comprises a tank body (110), an air outlet pipe (120), and an air inlet pipe (130); the tank body (110) is an elliptical body; the tank body (110) is installed in a direction perpendicular to the ground; one side of the top of the tank body (110) is fixedly connected to the air outlet pipe (120); the other side of the top of the tank body (110) is fixedly connected to the air inlet pipe (130); the air outlet pipe (120) is an L-shaped pipe; a filter assembly (200) is provided at the short pipe end of the air outlet pipe (120); the air inlet pipe (130) is a cylindrical body; a sand removal assembly (300) is fixedly connected to one side of the bottom of the air inlet pipe (130).

2. A self-sand separation device for shale gas extraction according to claim 1, characterized in that: The sand removal assembly (300) comprises a filter cartridge (310); The filter cartridge (310) is fixedly connected to the bottom of the air intake pipe (130); the filter cartridge (310) is a cone-shaped body; a flow divider cartridge (311) is fixedly connected to the filter cartridge (310); the flow divider cartridge (311) is a cone-shaped body.

3. The self-sand separation device for shale gas extraction according to claim 2, characterized in that: The sand removal assembly (300) further comprises a first diverter plate (320) and a second diverter plate (321); The first flow dividing plate (320) and the second flow dividing plate (321) are both fixedly connected to two sides of the flow dividing cylinder (311); the first flow dividing plate (320) is a rectangular body; the second flow dividing plate (321) is a rectangular body; an air inlet hole (322) is provided on one side surface of the second flow dividing plate (321); the air inlet hole (322) is a circular hole; an air bag body (323) is fixedly connected to the other side surface of the second flow dividing plate (321); the air bag body (323) is an arched body.

4. The self-sand separation device for shale gas extraction according to claim 3, characterized in that: The sand removal assembly (300) further comprises a sand guiding rope (330); The sand guiding rope (330) is arranged on a side of the first diverter plate (320) and the second diverter plate (321) away from the diverter tube (311), and the sand guiding rope (330) is in the shape of a long strip.

5. The self-sand separation device for shale gas extraction according to claim 1, characterized in that: The filtering assembly (200) comprises a desander (210), a purification pipe (220), an exhaust pipe (230), a liquid discharge pipe (240), a first sewage discharge pipe (250), a fluid pipe (260), and a second sewage discharge pipe (270); The desander (210) is fixedly connected to the side of the gas outlet pipe (120) inside the tank body (110). The desander (210) is a rectangular body. A cavity is provided inside the desander (210). A purification pipe (220) is arranged in the cavity. The purification pipe (220) is a cylindrical body. An exhaust pipe (230) is fixedly connected to the top of the purification pipe (220). The exhaust pipe (230) is a cylindrical body. A drain pipe (240) is fixedly connected to the bottom of the purification pipe (220). The drain pipe (240) is 0) is a cylindrical body, a first sewage pipe is arranged at the bottom of the desander (210), a gap is provided between the desander (210) and the first sewage pipe (250), the first sewage pipe (250) is a cylindrical body, a fluid pipe (260) is fixedly connected to the top of the first sewage pipe (250), the fluid pipe (260) is a cylindrical body, and an end of the fluid pipe (260) away from the first sewage pipe (250) is fixedly connected to a second sewage pipe (270), the second sewage pipe (270) is a cylindrical body.

6. The self-sand separation device for shale gas extraction according to claim 3, characterized in that: There is a gap between the first splitter plate (320) and the second splitter plate (321).

7. The self-sand separation device for shale gas extraction according to claim 5, characterized in that: There is a gap between the second sewage discharge pipe (270) and the air intake pipe (130).

8. The self-sand separation device for shale gas extraction according to claim 5, characterized in that: The diameters of the first sewage pipe (250) and the second sewage pipe (270) are greater than the diameter of the fluid pipe (260).

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