A sand removal device for natural gas

Abstract

The utility model relates to natural gas sand removal technical field discloses a sand removal device for natural gas, including sand removal box, the one side fixed setting of sand removal box has control panel, sand removal structure swing setting is in sand removal box, and sand removal structure includes baffle, sand removal board, electromagnet and permanent magnet, and the inside top surface of the flow guide structure swing setting is in sand removal box, and the flow guide structure includes worm wheel, main bevel gear, worm, vane, from bevel gear and rotary drum, pressure sensor triggers drive worm wheel and meshing drive, through the self -lock nature control main bevel gear rotation's position of worm wheel worm, utilize the meshing drive drive vane's angle change between main bevel gear and from bevel gear, make centrifugal force intensity match sand content, to improve the efficiency of separation sand removal correspondingly, electromagnet and permanent magnet cooperation adsorption make baffle block sand and gravel in the sand retention hole on sand removal board, the sand retention hole of honeycomb shape retains dust and sandstone and avoids being driven by airflow.

Description

Technical Field

[0001] This utility model belongs to the field of natural gas desanding technology, specifically, it relates to a natural gas desanding device. Background Technology

[0002] During natural gas extraction, the formation usually releases solid impurities such as sand and rock fragments into the natural gas. These impurities may not only clog wellhead equipment and wear down the inner wall of pipelines, but may also enter the subsequent processing system with the gas flow, causing equipment failure.

[0003] The prior art discloses a natural gas extraction drainage and sand removal device (CN219795235U). This device includes a sand removal box, a gas-liquid separation mechanism on one side of the sand removal box, and multiple sand removal plates on both sides of the sand removal box. The sand removal plates on both sides are staggered and the outer ends of the sand removal plates are inclined downwards. There is a gap between the ends of the sand removal plates and the inner wall of the sand removal box. An air outlet pipe is provided on one side of the sand removal box, and the end of the air outlet pipe extends into the sand removal box. A filter screen is connected to the end of the air outlet pipe inside the sand removal box. A flow guiding mechanism is provided on the inner side wall of the sand removal box near the bottom. This utility model accelerates the flow rate of natural gas by setting up a backflow mechanism, so that the natural gas carrying sand and gravel impacts the sand removal plates, causing the sand and gravel to fall off the sand removal plates, thereby improving the sand removal efficiency of natural gas.

[0004] Research revealed that the existing technology's blades, when rotating, cannot dynamically adjust the centrifugal force according to the size of the sand particles in the natural gas. This results in a decrease in the separation efficiency of the device when applied to high sand content areas. Furthermore, the sand removal plate is a planar structure, which cannot trap excessively small dust and sand particles, allowing them to be discharged with the natural gas. Additionally, when the accumulated sand is too thick, the sand removal plate slows down the falling speed of the sand and gravel, thus reducing the sand removal efficiency.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A natural gas sand removal device, comprising

[0008] A sand removal box is provided with an air outlet pipe fixedly installed on one side of the sand removal box. A gas-liquid separation mechanism is connected to one side of the sand removal box through the air outlet pipe. A control panel is fixedly installed on one side of the sand removal box.

[0009] A sand removal structure is movably installed inside a sand removal box. The sand removal structure includes a baffle, a sand removal plate, an electromagnet, and a permanent magnet. The baffle is hinged to the bottom surface of the sand removal plate. The permanent magnet is fixedly installed inside the baffle. The electromagnet is fixedly installed inside the sand removal plate. The control panel is electrically connected to the electromagnet.

[0010] A flow guiding structure is movably disposed on the inner top surface of the sand removal box. The flow guiding structure includes a worm gear, a main bevel gear, a worm, blades, a driven bevel gear, and a rotating drum. The main bevel gear is fixedly disposed at the bottom of the worm gear. The worm gear, main bevel gear, worm, and driven bevel gear are all rotatably disposed inside the rotating drum. The driven bevel gear is fixedly disposed at one end of the blades. The blades are rotatably disposed outside the rotating drum.

[0011] In a preferred embodiment of this utility model, a bracket is fixedly installed on the top of the sand removal box, a motor is fixedly installed inside the bracket, a fixed cylinder is connected to the output end of the motor, a nail-shaped adjustment box is fixedly installed on the top of the rotating cylinder, an installation column is fixedly installed on the top surface of the adjustment box, the installation column is sleeved inside the fixed cylinder, and a pin is inserted between the fixed cylinder and the installation column.

[0012] In a preferred embodiment of this utility model, a worm gear and a worm are rotatably connected inside the adjustment box, the worm gear meshes with the worm, and a micro motor is fixedly installed on one side of the adjustment box, with the output end of the micro motor connected to one end of the worm.

[0013] In a preferred embodiment of this utility model, a pressure sensor is installed on the inner wall of the sand removal box, the control panel is electrically connected to the motor, the micro motor and the pressure sensor, an air inlet pipe is fixedly installed on one side of the sand removal box, the pressure sensor is located at the inlet of the air inlet pipe, and the pressure sensor is electrically connected to the micro motor.

[0014] In a preferred embodiment of this utility model, the worm gear and the main bevel gear are fixedly connected by a connecting shaft, and multiple blades and secondary bevel gears are arranged in a circular array. The blades and secondary bevel gears are rotatably connected to the rotating drum through bearings, and multiple secondary bevel gears are driven and meshed with the main bevel gear.

[0015] In a preferred embodiment of this utility model, a trapezoidal sand guide block is fixedly installed on the bottom surface of the sand removal box, a sand discharge pipe is fixedly installed on one side of the sand removal box, the sand discharge pipe is located below the air inlet pipe, the inclined surface of the sand guide block faces the sand discharge pipe, and three baffles and three sand removal plates are arranged crosswise inside the sand removal box.

[0016] In a preferred embodiment of this utility model, the end of the baffle near the inner wall of the sand removal box is hinged to the sand removal plate, and the three sand removal plates are respectively provided with retention holes of different diameters. The permanent magnet is located at the end of the baffle away from the inner wall of the sand removal box, the fixing cylinder is located at the end of the sand removal plate away from the inner wall of the sand removal box, and the electromagnet and the permanent magnet are magnetically connected.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. By setting up a flow guiding structure, the pressure sensor triggers the drive worm and worm wheel to mesh and transmit power. The self-locking property of the worm wheel and worm gear controls the rotation position of the main bevel gear. The meshing transmission between the main bevel gear and the driven bevel gear drives the angle change of the blades, so that the centrifugal force intensity matches the sand content, thereby improving the efficiency of sand separation and removal.

[0019] 2. By setting up a sand removal structure, electromagnets and permanent magnets work together to attract and block sand and gravel in the retention holes on the sand removal plate. The honeycomb-shaped retention holes retain dust and sand and gravel to prevent them from being carried away by airflow. After the sand removal work is completed, the electromagnet is de-energized, causing the baffle and sand removal plate to open. The sand and gravel can then be discharged smoothly through the inclined angle of the baffle, thereby improving the efficiency of the device in removing sand.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic cross-sectional view of the interior of the sand removal box of this utility model;

[0024] Figure 3 This is a schematic diagram showing the usage state of the sand removal plate and baffle of this utility model;

[0025] Figure 4 This is a schematic diagram showing the disassembly and assembly state of the flow guiding structure of this utility model;

[0026] Figure 5 In this utility model Figure 2 A schematic diagram of the explosion at point A inside.

[0027] In the diagram: 10. Sand removal box; 11. Air outlet pipe; 12. Gas-liquid separation mechanism; 13. Control panel; 14. Air inlet pipe; 15. Sand discharge pipe; 16. Bracket; 17. Motor; 18. Sand guide block; 19. Baffle; 20. Sand removal plate; 21. Retention hole; 22. Fixing cylinder; 23. Mounting column; 24. Pin; 25. Worm gear; 26. Main bevel gear; 27. Micro motor; 28. Worm; 29. ​​Blade; 30. Driven bevel gear; 31. Adjustment box; 32. Rotary drum; 33. Electromagnet; 34. Permanent magnet; 35. Pressure sensor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0029] A desanding device for natural gas, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, including

[0030] A sand removal box 10 is provided with an air outlet pipe 11 fixedly installed on one side of the sand removal box 10. A gas-liquid separation mechanism 12 is connected to one side of the sand removal box 10 through the air outlet pipe 11. A control panel 13 is fixedly installed on one side of the sand removal box 10.

[0031] The sand removal structure is movably installed inside the sand removal box 10. The sand removal structure includes a baffle 19, a sand removal plate 20, an electromagnet 33, and a permanent magnet 34. The baffle 19 is hinged to the bottom surface of the sand removal plate 20. The permanent magnet 34 is fixedly installed inside the baffle 19. The electromagnet 33 is fixedly installed inside the sand removal plate 20. The control panel 13 is electrically connected to the electromagnet 33.

[0032] The flow guiding structure is movably installed on the inner top surface of the sand removal box 10. The flow guiding structure includes a worm gear 25, a main bevel gear 26, a worm 28, a blade 29, a driven bevel gear 30, and a rotating drum 32. The main bevel gear 26 is fixedly installed at the bottom of the worm gear 25. The worm gear 25, the main bevel gear 26, the worm 28, and the driven bevel gear 30 are all rotatably installed inside the rotating drum 32. The driven bevel gear 30 is fixedly installed at one end of the blade 29. The blade 29 is rotatably installed outside the rotating drum 32.

[0033] Specifically, natural gas is fed into the desanding box 10 from the inlet pipe 14. The guide structure rotates to drive the natural gas to flow upward quickly. The natural gas carrying sand and gravel impacts the desanding plate 20, causing the sand and gravel to fall off. The natural gas flows through the gaps between the multiple desanding plates 20 and the inner wall of the desanding box 10, and then flows to the outlet pipe 11. The filter screen on the outlet pipe 11 further prevents impurities from entering the outlet pipe 11. The sand and gravel are screened through multiple layers by the staggered desanding plates 20. The natural gas flowing out from the outlet pipe 11 enters the gas-liquid separation mechanism 12 to separate the water in the natural gas.

[0034] It is worth noting that the gas outlet pipe, filter screen, and gas-liquid separation mechanism 12 appearing in this device are all disclosed in detail in the prior art of a natural gas extraction drainage and sand removal device (CN219795235U). The application of these components to this device only requires that the specifications be compatible, so they will not be described in detail here.

[0035] like Figure 1 and Figure 4 As shown, a bracket 16 is fixedly installed on the top of the sand box 10, a motor 17 is fixedly installed inside the bracket 16, the output end of the motor 17 is connected to a fixed cylinder 22, a nail-shaped adjustment box 31 is fixedly installed on the top of the rotating cylinder 32, a mounting post 23 is fixedly installed on the top surface of the adjustment box 31, the mounting post 23 is sleeved inside the fixed cylinder 22, and a pin 24 is inserted between the fixed cylinder 22 and the mounting post 23.

[0036] like Figure 4 As shown, a worm gear 25 and a worm 28 are rotatably connected inside the adjustment box 31. The worm gear 25 drives the worm 28. A micro motor 27 is fixedly installed on one side of the adjustment box 31. The output end of the micro motor 27 is connected to one end of the worm 28.

[0037] The working principle is as follows: the mounting column 23 consists of a cylinder and a plate. The plate is fixed to the top surface of the adjusting box 31 by bolts. The cylinder is fitted into the fixing cylinder 22 and fixed by the pin 24. The interior of the adjusting box 31 is a nail-shaped cavity. The interior of the adjusting box 31 is connected to the interior of the rotating cylinder 32. The worm gear 25 and the worm 28 are both rotatably set at the top of the adjusting box 31. When in use, the micro motor 27 drives the worm 28 to rotate. The worm 28 meshes with the worm gear 25 for transmission. The motor 17 drives the fixing cylinder 22 to rotate. The fixing cylinder 22 drives the mounting column 23 to rotate through the pin 24. The mounting column 23 drives the adjusting box 31 and the rotating cylinder 32 to rotate.

[0038] like Figure 1 , Figure 2 and Figure 4 As shown, a pressure sensor 35 is installed on the inner wall of the sand removal box 10. The control panel 13 is electrically connected to the motor 17, the micro motor 27 and the pressure sensor 35. An air inlet pipe 14 is fixedly installed on one side of the sand removal box 10. The pressure sensor 35 is located at the inlet of the air inlet pipe 14 and is electrically connected to the micro motor 27.

[0039] like Figure 4 As shown, the worm gear 25 and the main bevel gear 26 are fixedly connected by a connecting shaft. Multiple blades 29 and secondary bevel gears 30 are arranged in a circular array. The blades 29 and secondary bevel gears 30 are rotatably connected to the rotating drum 32 through bearings. Multiple secondary bevel gears 30 are all engaged with the main bevel gear 26 for transmission.

[0040] The working principle is as follows: When in use, sand-containing natural gas enters the sand removal box 10. The pressure sensor 35 senses the pressure of the natural gas and transmits the signal to the control panel 13. The control panel 13 controls the start and rotation speed of the micro motor 27 through the transmitted pressure signal. The micro motor 27 drives the main bevel gear 26 to mesh with each of the driven bevel gears 30 through the meshing transmission between the worm gear 25 and the worm 28, thereby driving the driven bevel gears 30 to rotate and adjust the angle of the blades 29. When the motor 17 drives the rotating drum 32 to rotate, it synchronously drives each blade 29. At this time, the centrifugal force intensity is formed according to the adjusted angle of each blade 29 to match the sand content of the natural gas, thereby improving the efficiency of sand removal.

[0041] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a trapezoidal sand guide block 18 is fixedly installed on the bottom surface of the sand removal box 10, and a sand discharge pipe 15 is fixedly installed on one side of the sand removal box 10. The sand discharge pipe 15 is located below the air inlet pipe 14, and the inclined surface of the sand guide block 18 is directly opposite the sand discharge pipe 15. Three baffles 19 and three sand removal plates 20 are arranged in a cross pattern inside the sand removal box 10.

[0042] like Figure 3 and Figure 5 As shown, the end of the baffle 19 near the inner wall of the sand removal box 10 is hinged to the sand removal plate 20. The three sand removal plates 20 are respectively provided with retention holes 21 of different diameters. The permanent magnet 34 is located at the end of the baffle 19 away from the inner wall of the sand removal box 10. The fixing cylinder 22 is located at the end of the sand removal plate 20 away from the inner wall of the sand removal box 10. The electromagnet 33 and the permanent magnet 34 are magnetically connected.

[0043] The working principle is as follows: In the working state, the control panel 13 is connected to the power supply of the three electromagnets 33, which are then energized. After being energized, the electromagnets 33 are magnetically connected to the permanent magnets 34. The retention holes 21 have a honeycomb structure. When the flow guiding structure agitates the natural gas by centrifugal swirling, large particles of sand and gravel in the natural gas will directly settle onto the inclined surface of the sand guide block 18. After being guided by the inclined surface of the sand guide block 18, they slide out of the sand discharge pipe 15. Fine particles of sand and gravel will collide with the sand removal plates 20 at different positions under the centrifugal force of the flow guiding structure. According to the size and weight of the sand and gravel particles, they will be retained in the retention holes 21 of the corresponding specifications. After the sand removal work is completed, the control panel 13 controls the electromagnets 33 to be de-energized, and the magnetism of the electromagnets 33 will be temporarily eliminated. At this time, the baffle 19 loses its fixation and falls and swings. The sand and gravel retained in the retention holes 21 fall off and are discharged through the sand guide block 18 to the sand discharge pipe 15, thereby being discharged from the sand removal box 10.

[0044] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A sand removal device for natural gas, characterized in that, include A sand removal box (10) is provided with an air outlet pipe (11) fixedly installed on one side of the sand removal box (10). A gas-liquid separation mechanism (12) is connected to one side of the sand removal box (10) through the air outlet pipe (11). A control panel (13) is fixedly installed on one side of the sand removal box (10). The sand removal structure is movably installed inside the sand removal box (10). The sand removal structure includes a baffle (19), a sand removal plate (20), an electromagnet (33), and a permanent magnet (34). The baffle (19) is hinged to the bottom surface of the sand removal plate (20). The permanent magnet (34) is fixedly installed inside the baffle (19). The electromagnet (33) is fixedly installed inside the sand removal plate (20). The control panel (13) is electrically connected to the electromagnet (33). A flow guiding structure is movably disposed on the inner top surface of the sand removal box (10). The flow guiding structure includes a worm gear (25), a main bevel gear (26), a worm (28), a blade (29), a driven bevel gear (30), and a rotating drum (32). The main bevel gear (26) is fixedly disposed at the bottom of the worm gear (25). The worm gear (25), the main bevel gear (26), the worm (28), and the driven bevel gear (30) are all rotatably disposed inside the rotating drum (32). The driven bevel gear (30) is fixedly disposed at one end of the blade (29). The blade (29) is rotatably disposed outside the rotating drum (32).

2. A natural gas desanding device according to claim 1, characterized in that, A bracket (16) is fixedly installed on the top of the sand removal box (10). A motor (17) is fixedly installed inside the bracket (16). The output end of the motor (17) is connected to a fixed cylinder (22). A nail-shaped adjustment box (31) is fixedly installed on the top of the rotating cylinder (32). An installation column (23) is fixedly installed on the top surface of the adjustment box (31). The installation column (23) is sleeved inside the fixed cylinder (22). A pin (24) is inserted between the fixed cylinder (22) and the installation column (23).

3. A natural gas desanding device according to claim 2, characterized in that, The worm gear (25) and worm (28) are rotatably connected inside the adjustment box (31). The worm gear (25) drives the worm (28). A micro motor (27) is fixedly installed on one side of the adjustment box (31). The output end of the micro motor (27) is connected to one end of the worm (28).

4. A natural gas desanding device according to claim 3, characterized in that, A pressure sensor (35) is installed on the inner wall of the sand removal box (10). The control panel (13) is electrically connected to the motor (17), the micro motor (27) and the pressure sensor (35). An air inlet pipe (14) is fixedly installed on one side of the sand removal box (10). The pressure sensor (35) is located at the inlet of the air inlet pipe (14). The pressure sensor (35) is electrically connected to the micro motor (27).

5. A natural gas desanding device according to claim 4, characterized in that, The worm gear (25) and the main bevel gear (26) are fixedly connected by a connecting shaft. Multiple blades (29) and secondary bevel gears (30) are arranged in a circular array. The blades (29) and secondary bevel gears (30) are rotatably connected to the rotating drum (32) through bearings. Multiple secondary bevel gears (30) are engaged with the main bevel gear (26) in a transmission.

6. A natural gas desanding device according to claim 4, characterized in that, A trapezoidal sand guide block (18) is fixedly installed on the bottom surface of the sand removal box (10). A sand discharge pipe (15) is fixedly installed on one side of the sand removal box (10). The sand discharge pipe (15) is located below the air inlet pipe (14). The inclined surface of the sand guide block (18) faces the sand discharge pipe (15). Three baffles (19) and three sand removal plates (20) are arranged crosswise inside the sand removal box (10).

7. A natural gas desanding device according to claim 6, characterized in that, The baffle (19) is hinged to the sand removal plate (20) at one end near the inner wall of the sand removal box (10). The three sand removal plates (20) are respectively provided with retention holes (21) of different diameter specifications. The permanent magnet (34) is located at the end of the baffle (19) away from the inner wall of the sand removal box (10). The fixed cylinder (22) is located at the end of the sand removal plate (20) away from the inner wall of the sand removal box (10). The electromagnet (33) and the permanent magnet (34) are magnetically connected.

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