Wellhead continuous natural gas sand removal and separation equipment and method

Abstract

The present application relates to the technical field of natural gas processing equipment, and specifically to a wellhead continuous natural gas sand removal and separation equipment and method, comprising a separation cylinder, the outer wall of which is connected to a wellhead gas transmission pipe, and the outer wall of which is fixedly connected to an outlet pipe. In the present invention, an outlet fan sucks out the treated natural gas through the outlet pipe. When the natural gas with sand particles enters the interior of a conical separation box, the guide spiral rotating plate guides the natural gas, causing the airflow to change from linear motion to circular motion. Most of the rotating airflow moves along the wall of the device in a spiral downward and flows toward the bottom of the cone. The dust-laden natural gas generates centrifugal force during the rotation process, throwing particles with a density greater than that of the natural gas onto the inner wall of the conical separation box. Once the sand particles come into contact with the inner wall of the conical separation box, they lose their inertial force and fall along the wall by the gravity of the sand particles themselves. The fallen sand particles are discharged into the top of the filter plate through the sand discharge pipe.

Description

Technical Field

[0001] The present application relates to the technical field of natural gas processing equipment, and in particular to a wellhead continuous natural gas desanding and separation device and method. Background Art

[0002] In related technologies, with the continuous updating of natural gas extraction technology and the continuous breakthrough of drilling depth from deep wells to ultra-deep wells, especially the hydraulic fracturing technology used in unconventional natural gas extraction, the produced natural gas carries a large amount of particulate matter and formation sand, and the pressure is high and the gas flow rate is fast, which makes the movement speed of sand particles also faster.

[0003] In the existing technology (Patent No. CN112523738B, Patent Application for a Natural Gas Hydrate Separation Apparatus and Process), partitions are used to separate different cavities, allowing for the recovery of each phase without interference. This simple and reliable structure fully utilizes the characteristics of cyclone separation, adapting to varying processing volumes, offering excellent operational flexibility and convenient sand removal. Furthermore, it effectively recovers some of the decomposed natural gas, resolving issues such as low gas phase recovery efficiency, gas stagnation within the cyclone chamber, and difficulty in sand removal, found in existing separation equipment. During the implementation of this technical solution, it was discovered that the existing technology suffers from at least the following problems:

[0004] In the existing sand removal and separation equipment, due to the impact of sand and gravel on the spiral separation tube, sand and gravel and natural gas residual substances remain on the spiral separation tube for a long time. Under the impact of sand and gravel and natural gas, the wear of the spiral separation tube will be accelerated, affecting the service life. Therefore, during use, the spiral separation tube is regularly surface treated. Since there is a certain amount of moisture in natural gas, when removing sand from the natural gas, there will be moisture and dust impurities in the device. The mixed dust will adhere to the sand discharge port, making the sand discharge channel narrow, making sand discharge difficult, and easily clogging the pipeline for a long time. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems in the prior art, namely, that mixed dust tends to adhere to the sand discharge port, thereby narrowing the sand discharge channel, making sand discharge difficult, and easily clogging the pipeline for a long time. To this end, this application proposes a wellhead continuous natural gas sand removal and separation device and method.

[0006] According to an embodiment of the present application, a wellhead continuous natural gas desanding and separation device and method includes a separation cylinder, the outer wall of which is connected to a wellhead gas pipeline, the outer wall of which is fixedly connected to an outlet pipe, and the end of the outlet pipe away from the separation cylinder is fixedly connected to an outlet blower, and further includes:

[0007] A separation mechanism, the separation mechanism comprising a fixing frame fixedly connected to the outer wall of the separation cylinder, a cleaning liquid storage cylinder fixedly connected to the side wall of the fixing frame, a liquid adding pipe communicating with the outer wall of the cleaning liquid storage cylinder, a liquid suction pipe fixedly connected to the bottom end of the cleaning liquid storage cylinder, one end of the liquid suction pipe penetrating the outer wall of the separation cylinder and extending into the interior;

[0008] A separation assembly includes a conical separation box fixedly connected to the outer wall of the wellhead gas pipe, a separation tube is provided at the top center axis of the conical separation box, the top end of the separation tube passes through the inner wall of the conical separation box and extends to the outside, and a guide spiral plate is fixedly connected to the outer wall of the separation tube, and the guide spiral plate is located inside the conical separation box.

[0009] Preferably, the separation mechanism also includes a suction tube fixedly connected to the top of the cleaning liquid storage cylinder, the end of the suction tube away from the cleaning liquid storage cylinder is fixedly connected to a water pump, the drainage end of the water pump is fixedly connected to a drainage pipe, a liquid storage chamber is opened inside the separation cylinder, one end of the drainage pipe passes through the top of the separation cylinder and extends into the liquid storage chamber, and the inner wall of the liquid storage chamber is fixedly connected to a pressurized nozzle.

[0010] Preferably, the separation assembly also includes a separation cylinder fixedly connected to the inner wall of the separation cylinder, the top of the separation tube passes through the bottom of the separation cylinder and extends to the interior, the inner wall of the separation cylinder is fixedly connected with a separation baffle, the bottom end of the pressurized nozzle passes through the top of the separation cylinder and extends to the interior, the bottom of the separation cylinder is connected with a connecting pipe, the outer wall of the connecting pipe is provided with a liquid outlet, the liquid outlet is located inside the conical separation box, the outer wall of the separation cylinder is connected with a U-shaped tube, one end of the U-shaped tube passes through the outer wall of the separation cylinder and extends to the interior.

[0011] Preferably, a sand discharge pipe is fixedly connected to the bottom of the conical separation box, and one end of the sand discharge pipe away from the conical separation box passes through the outer wall of the separation cylinder and extends to the interior. A one-way valve is provided on the outer wall of the sand discharge pipe.

[0012] Preferably, the outer wall of the separation cylinder is provided with a reciprocating mechanism, and the reciprocating mechanism includes a fixed bracket fixedly connected to the outer wall of the separation cylinder, the inner wall of the fixed bracket is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to a rotating rod, the rotating rod passes through the outer wall of the separation cylinder and extends to the interior, the side wall of the rotating rod is provided with a disc, the side wall of the disc is fixedly connected to a fixed shaft, the outer wall of the fixed shaft is rotatably connected to a push-pull plate, the push-pull plate is rotatably connected to the push-pull rod at one end away from the fixed shaft, and one end of the push-pull rod is fixedly connected to a sliding suction cylinder, and the outer wall of the sliding suction cylinder is slidably connected to the inner wall of the exhaust pipe.

[0013] Preferably, the outer wall of the sliding suction cylinder is fixedly connected to the limiting frame, the inner wall of the limiting frame is slidably connected to a sliding rod, the outer wall of the sliding rod is fixedly connected to a connecting seat, the bottom of the connecting seat is fixedly connected to a lifting support plate, the inner wall of the lifting support plate is fixedly connected to a separation membrane, and the end of the separation membrane away from the lifting support plate is fixedly connected to the outer wall of the sliding suction cylinder.

[0014] Preferably, the inner wall of the separation cylinder is fixedly connected to a fixed plate, the side wall of the fixed plate is fixedly connected to a reciprocating plate, the side wall of the reciprocating plate is provided with a reciprocating groove, the inner wall of the reciprocating groove is slidably connected to a lifting rod, and the end of the lifting rod away from the reciprocating groove is fixedly connected to the side wall of the connecting seat.

[0015] Preferably, a water spraying mechanism is provided on the top of the lifting support plate, and the water spraying mechanism includes an L-shaped push-pull frame fixedly connected to the top of the lifting support plate, the side wall of the L-shaped push-pull frame is slidably connected with a convex slide, the side wall of the convex slide is fixedly connected with a spray box, the side wall of the spray box is connected with a liquid inlet pipe, the inner wall of the separation cylinder is fixedly connected with a fixed support plate, and the inner wall of the fixed support plate is fixedly connected with a suction pipe.

[0016] Preferably, a suction assembly is provided inside the dip tube, and the suction assembly includes a hollow suction rod slidably connected to the bottom central axis of the dip tube, the outer wall of the hollow suction rod is connected to one end of the liquid inlet tube, the outer wall of the hollow suction rod is fixedly connected to a fixed disk, the outer wall of the hollow suction rod is provided with a suction port, the outer wall of the hollow suction rod is provided with a piston, the outer wall of the piston is slidably connected to the inner wall of the dip tube, the top of the hollow suction rod is fixedly connected to a connecting cylinder, the inner wall of the connecting cylinder is fixedly connected to a spring, the end of the spring away from the connecting cylinder is fixedly connected to a glass ball, the inner wall of the dip tube is fixedly connected to a suction pipe, one end of the suction pipe passes through the outer wall of the cleaning liquid storage cylinder and extends to the interior.

[0017] Preferably, a method for using a wellhead continuous natural gas desanding and separation device comprises the following steps:

[0018] S1: The wellhead gas pipeline is connected to the wellhead, and the exhaust fan is started. The exhaust fan sucks out the treated natural gas through the exhaust pipe. When the natural gas with sand particles enters the conical separation box, the guide spiral rotating plate guides the natural gas, and the particles with a density greater than that of the natural gas are thrown to the inner wall of the conical separation box. The fallen sand particles are discharged to the top of the filter plate through the sand discharge pipe. When the rotating and descending outward swirling airflow reaches the bottom of the separation tube, the natural gas moves upward along the separation tube and enters the separation cylinder;

[0019] S2: The liquid adding pipe adds appropriate cleaning water to the cleaning liquid storage cylinder, starts the water pump, and the water pump sucks the liquid in the cleaning liquid storage cylinder through the liquid suction pipe. The drain pipe discharges the cleaning liquid into the liquid storage chamber and cleans the separation baffle through the pressurized nozzle;

[0020] S3: When the natural gas cleaned by the separation component is discharged from the U-shaped pipe into the separation cylinder, the outlet pipe and the sliding suction cylinder are suctioned, the servo motor drives the rotating rod to rotate, the rotating rod drives the disc and the fixed shaft to move, the fixed shaft pulls the push-pull rod to move through the push-pull plate, and since the sliding suction cylinder slides in the outlet pipe, the push-pull rod can drive the sliding suction cylinder to perform reciprocating horizontal motion, the sliding suction cylinder drives the limit frame to move, the limit frame drives the sliding rod and the connecting seat to move, the connecting seat slides in the reciprocating groove through the lifting rod, so that the connecting seat moves up and down while moving laterally, and the connecting seat causes the separation membrane to oscillate through the lifting support plate;

[0021] S4: The lifting support plate pulls the spray box to move back and forth through the L-shaped push-pull frame and the convex slide plate. The spray box drives the liquid inlet pipe to move, and absorbs water through the reciprocating motion of the suction component. The absorbed water is discharged from the liquid inlet pipe into the spray box, and the spray box cleans the separation membrane.

[0022] The beneficial effects of this application are:

[0023] 1. This wellhead continuous natural gas desanding and separation equipment and method has a wellhead gas pipeline connected to the wellhead, and an outlet blower started to suck out the treated natural gas through the outlet pipe. When the natural gas with sand particles enters the conical separation box, the guide spiral plate guides the natural gas, causing the airflow to change from linear motion to circular motion. Most of the rotating airflow moves along the wall of the device in a spiral downward and flows toward the bottom of the cone. The dust-laden natural gas generates centrifugal force during the rotation process, throwing particles with a density greater than that of the natural gas toward the inner wall of the conical separation box. Once the sand particles come into contact with the inner wall of the conical separation box, they lose their inertia and fall along the wall due to their own gravity. The fallen sand particles are discharged into the top of the filter plate through the sand discharge pipe. When the rotating and descending outward swirling airflow reaches the bottom of the separation tube, the natural gas moves upward along the separation tube and enters the separation cylinder because the density of natural gas is lower than that of air. During the flow of natural gas, the inclination of the separation baffle changes the flow direction of the natural gas, so that the flowing natural gas has a greater inertia and collides with the separation baffle, so that the dust and a large amount of water are separated from the natural gas. The dust and water droplets will be discharged from the liquid outlet through the connecting pipe into the conical separation box, thereby separating a large amount of liquid and large-diameter dust in the natural gas, and realizing the separation of sand and gravel from natural gas.

[0024] 2. The wellhead continuous natural gas desanding and separation equipment and method adds appropriate cleaning water to the cleaning liquid storage cylinder through the liquid adding pipe, starts the water pump, and the water pump sucks the liquid in the cleaning liquid storage cylinder into the drain pipe through the liquid suction pipe. The drain pipe discharges the cleaning liquid into the liquid storage chamber and cleans the separation baffle through the pressurized nozzle. At the same time, the water sprayed by the pressurized nozzle can be mixed with the moisture in the natural gas, thereby reducing the moisture present in the natural gas. The cleaning water is discharged into the conical separation box through the connecting pipe for cleaning, avoiding the accumulation of impurities at the outlet of the conical separation box and affecting the overall separation operation. The cleaning water drives the impurities to be discharged onto the filter plate, the filter plate filters the impurities, and the filtered cleaning water is sucked into the cleaning liquid storage cylinder through the liquid suction pipe for reuse, saving a lot of water resources.

[0025] 3. The wellhead continuous natural gas sand removal and separation equipment and method, when the natural gas cleaned by the separation component is discharged from the U-shaped pipe into the separation cylinder, the air outlet pipe and the sliding suction cylinder are used for suction, so that the separation membrane can perform secondary purification on the natural gas, and the servo motor drives the rotating rod to rotate, and the rotating rod drives the disc and the fixed shaft to move, and the fixed shaft pulls the push-pull rod to move through the push-pull plate. Since the sliding suction cylinder slides in the air outlet pipe, the push-pull rod can drive the sliding suction cylinder to perform reciprocating horizontal movement, and the sliding suction cylinder drives the limit frame to move, and the limit frame drives the sliding rod and the connecting seat to move, and the connecting seat slides in the reciprocating groove through the lifting rod, so that the connecting seat can perform lifting and lowering movements while performing horizontal movement, and the connecting seat can oscillate the separation membrane through the lifting support plate, so that the sand and gravel on the separation membrane can fall quickly under vibration, avoid clogging of the separation membrane, and improve the cleaning efficiency.

[0026] 4. This wellhead continuous natural gas desanding and separation equipment and method, when the lifting support plate is reciprocatingly lifted and lowered, the lifting support plate pulls the spray box to reciprocate and lift through the L-shaped push-pull frame and the convex slide plate, and the spray box drives the liquid inlet pipe to move. When the hollow suction rod descends, the hollow suction rod drives the connecting tube to descend. Because the friction between the piston and the suction tube is greater than the friction between the hollow suction rod and the piston, the piston can only be pulled through the connecting tube. When the piston contacts the connecting tube, the piston blocks the suction port, thereby forming a negative pressure on the piston. During the continued descent process, the glass ball releases the pressure on the top of the suction tube. Due to the limitation of the water inlet, the piston uses negative pressure during the descent process to make the cleaning water in the cleaning liquid storage cylinder enter the suction tube through the suction pipe. When the liquid inlet pipe drives the suction hollow rod to rise, the glass ball blocks the water inlet on the top of the suction tube. The suction hollow rod pushes the piston to continue to rise through the fixed disc. The piston enters the liquid in the suction tube and squeezes it. During the squeezing process, the liquid is discharged into the suction hollow rod through the suction port and discharged into the spray tank from the liquid inlet pipe. The spray tank cleans the separation membrane, further improving the service life of the device. It does not require manual replacement and is more convenient to operate.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 is a schematic diagram of the overall three-dimensional structure according to an embodiment of the present application;

[0030] Figure 2 Schematic diagram of the internal structure of a separation cylinder according to an embodiment of the present application;

[0031] Figure 3 is a schematic structural diagram of a separation mechanism according to an embodiment of the present application;

[0032] Figure 4 is a cross-sectional view of the separation assembly structure according to an embodiment of the present application;

[0033] Figure 5 is a cross-sectional view of the air outlet pipe structure according to an embodiment of the present application;

[0034] Figure 6 is a cross-sectional view of the reciprocating mechanism structure according to an embodiment of the present application;

[0035] Figure 7 According to the embodiment of this application Figure 6 Enlarged view of point A in the middle;

[0036] Figure 8 is a schematic diagram of the structure of a dip tube according to an embodiment of the present application;

[0037] Figure 9 is a schematic diagram of the overall structure of the water spray mechanism according to an embodiment of the present application;

[0038] Figure 10 is a cross-sectional view of the suction assembly structure according to an embodiment of the present application;

[0039] Figure 11 is a cross-sectional view of the sand discharge mechanism structure according to an embodiment of the present application;

[0040] Figure 12 It is a method diagram according to an embodiment of the present application.

[0041] Icons: 101, separation cylinder; 102, wellhead gas pipeline; 103, air outlet pipe; 104, air outlet fan; 2, separation mechanism; 201, fixed frame; 202, cleaning liquid storage cylinder; 203, liquid adding pipe; 204, suction pipe; 205, suction pipe; 206, water pump; 207, drainage pipe; 208, liquid storage chamber; 209, pressurized nozzle; 3, separation assembly; 301, conical separation box; 302, separation pipe; 303, guide spiral plate; 304, separation cylinder; 305, separation baffle; 306, connecting pipe; 307, liquid outlet; 308, U-shaped pipe; 309, sand discharge pipe; 310, one-way valve; 4, reciprocating mechanism; 401, fixed bracket; 402, servo motor; 403, rotating rod; 404, disc; 405, fixed shaft; 406, push Pull plate; 407, push-pull rod; 408, sliding suction cylinder; 409, limit frame; 41, slide rod; 42, connecting seat; 43, lifting support plate; 44, separation membrane; 45, fixed plate; 46, reciprocating plate; 47, reciprocating groove; 48, lifting rod; 5, water spraying mechanism; 501, L-shaped push-pull frame; 502, convex slide plate; 503, spray box; 504, liquid inlet pipe; 505, fixed support plate; 506, suction tube; 6, suction assembly; 601, suction hollow rod; 602, fixed disc; 603, piston; 604, suction port; 605, connecting cylinder; 606, spring; 607, glass ball; 609, suction pipe; 7, sand discharge mechanism; 701, belt; 702, rotating shaft; 703, spiral conveyor plate; 704, filter plate; 705, collection box; 706, collection frame. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0043] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0046] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0048] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0050] A wellhead continuous natural gas desanding and separation device and method according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0051] like Figures 1 to 4As shown, according to an embodiment of the present application, a wellhead continuous natural gas desanding and separation device and method includes a separation cylinder 101, the outer wall of the separation cylinder 101 is connected to the wellhead gas pipeline 102, the outer wall of the separation cylinder 101 is fixedly connected to the outlet pipe 103, and the outlet pipe 103 is fixedly connected to the outlet fan 104 at one end away from the separation cylinder 101. This configuration is to connect the wellhead gas pipeline 102 to the wellhead, start the outlet fan 104, and suck out the treated natural gas through the outlet pipe 103. The device also includes:

[0052] The separation mechanism 2 includes a fixed frame 201 fixedly connected to the outer wall of the separation cylinder 101, a cleaning liquid storage cylinder 202 fixedly connected to the side wall of the fixed frame 201, a liquid adding pipe 203 is provided on the outer wall of the cleaning liquid storage cylinder 202, and a liquid suction pipe 204 is fixedly connected to the bottom end of the cleaning liquid storage cylinder 202. One end of the liquid suction pipe 204 passes through the outer wall of the separation cylinder 101 and extends to the interior. The separation mechanism 2 also includes a liquid suction pipe 205 fixedly connected to the top of the cleaning liquid storage cylinder 202, and the end of the liquid suction pipe 205 away from the cleaning liquid storage cylinder 202 is fixedly connected to a water pump 206. The water pump The drainage end of 206 is fixedly connected to a drainage pipe 207. This arrangement is used to add appropriate cleaning water to the cleaning liquid storage cylinder 202 through the liquid adding pipe 203, start the water pump 206, and the water pump 206 sucks the liquid in the cleaning liquid storage cylinder 202 into the drainage pipe 207 through the liquid suction pipe 205. The drainage pipe 207 discharges the cleaning liquid into the liquid storage chamber 208. The separation cylinder 101 is provided with a liquid storage chamber 208. One end of the drainage pipe 207 passes through the top of the separation cylinder 101 and extends into the liquid storage chamber 208. The inner wall of the liquid storage chamber 208 is fixedly connected to a pressurized nozzle 209.

[0053] Separation assembly 3, separation assembly 3 includes a conical separation box 301 fixedly connected to the outer wall of the wellhead gas pipeline 102, a separation pipe 302 is provided at the top center axis of the conical separation box 301, the top of the separation pipe 302 passes through the inner wall of the conical separation box 301 and extends to the outside, the outer wall of the separation pipe 302 is fixedly connected to a guide spiral plate 303, the guide spiral plate 303 is located inside the conical separation box 301, and the separation assembly 3 also includes a separation cylinder 304 fixedly connected to the inner wall of the separation cylinder 101. This arrangement is to The gas enters the conical separation box 301. Due to the guidance of the guide spiral plate 303 for the natural gas, the gas flow changes from linear motion to circular motion. The top of the separation tube 302 passes through the bottom of the separation tube 304 and extends to the inside. The inner wall of the separation tube 304 is fixedly connected with a separation baffle 305. The bottom end of the pressurized nozzle 209 passes through the top of the separation tube 304 and extends to the inside. The bottom of the separation tube 304 is connected to a connecting pipe 306. The outer wall of the connecting pipe 306 is provided with a liquid outlet 307. The liquid outlet 307 is located at the conical separation box 301. 01, the arrangement is such that the natural gas moves upward along the separation tube 302 and enters the separation cylinder 304. During the flow of natural gas, the inclination of the separation baffle 305 changes the flow direction of the natural gas, so that the flowing natural gas carries the dust and water with greater inertia, which will collide with the separation baffle 305, so that the dust and a large amount of water are separated from the natural gas. The dust and water droplets will pass through the connecting pipe 306 and be discharged from the liquid outlet 307 into the conical separation box 301, thereby separating a large amount of liquid and large-diameter dust in the natural gas, and achieving For the separation of sand and natural gas, a U-shaped tube 308 is provided on the outer wall of the separation cylinder 304. One end of the U-shaped tube 308 passes through the outer wall of the separation cylinder 101 and extends to the interior. This is arranged so that natural gas can be discharged from the U-shaped tube 308 into the separation cylinder 101. A sand discharge pipe 309 is fixedly connected to the bottom of the conical separation box 301. One end of the sand discharge pipe 309 away from the conical separation box 301 passes through the outer wall of the separation cylinder 101 and extends to the interior. A one-way valve 310 is provided on the outer wall of the sand discharge pipe 309 to prevent the backflow of natural gas.

[0054] like Figures 5 to 7As shown, the outer wall of the separation cylinder 101 is provided with a reciprocating mechanism 4, and the reciprocating mechanism 4 includes a fixed bracket 401 fixedly connected to the outer wall of the separation cylinder 101, and the inner wall of the fixed bracket 401 is fixedly connected to a servo motor 402, and the output end of the servo motor 402 is fixedly connected to a rotating rod 403, and the rotating rod 403 passes through the outer wall of the separation cylinder 101 and extends to the interior, and the side wall of the rotating rod 403 is provided with a disc 404, and the side wall of the disc 404 is fixedly connected to a fixed shaft 405, and the outer wall of the fixed shaft 405 is rotatably connected to a push-pull plate 406, and the push-pull plate 406 is rotatably connected to the end away from the fixed shaft 405. A push-pull rod 407 is fixedly connected at one end of the push-pull rod 407. The sliding suction cylinder 408, the outer wall of the sliding suction cylinder 408 is slidably connected to the inner wall of the outlet pipe 103. This arrangement is for the outlet pipe 103 and the sliding suction cylinder 408 to inhale, so that the separation membrane 44 can perform secondary purification on the natural gas. The servo motor 402 drives the rotating rod 403 to rotate, and the rotating rod 403 drives the disc 404 and the fixed shaft 405 to move. The fixed shaft 405 pulls the push-pull rod 407 to move through the push-pull plate 406. Since the sliding suction cylinder 408 slides in the outlet pipe 103, the push-pull rod 407 can drive the sliding suction cylinder 408 to perform reciprocating horizontal movement, and the sliding suction cylinder 408 drives the limit frame 409 to move.

[0055] The outer wall of the sliding suction cylinder 408 is fixedly connected to the limit frame 409, and the inner wall of the limit frame 409 is slidably connected to the sliding rod 41. The outer wall of the sliding rod 41 is fixedly connected to the connecting seat 42. The bottom of the connecting seat 42 is fixedly connected to the lifting support plate 43. The inner wall of the lifting support plate 43 is fixedly connected to the separation membrane 44. The end of the separation membrane 44 away from the lifting support plate 43 is fixedly connected to the outer wall of the sliding suction cylinder 408. The inner wall of the separation cylinder 101 is fixedly connected to the fixed plate 45. The side wall of the fixed plate 45 is fixedly connected to the reciprocating plate 46. The side wall of the reciprocating plate 46 is provided with a reciprocating plate. Groove 47, the inner wall of the reciprocating groove 47 is slidably connected with a lifting rod 48, and the end of the lifting rod 48 away from the reciprocating groove 47 is fixedly connected to the side wall of the connecting seat 42. This arrangement is to allow the limit frame 409 to drive the sliding rod 41 and the connecting seat 42 to move, and the connecting seat 42 slides in the reciprocating groove 47 through the lifting rod 48, so that the connecting seat 42 can move up and down while moving horizontally. The connecting seat 42 oscillates the separation membrane 44 through the lifting support plate 43, which facilitates the sand and gravel on the separation membrane 44 to fall quickly under vibration, avoids clogging of the separation membrane 44, and improves the cleaning efficiency.

[0056] like Figures 8 to 10As shown, a water spraying mechanism 5 is provided on the top of the lifting support plate 43, and the water spraying mechanism 5 includes an L-shaped push-pull frame 501 fixedly connected to the top of the lifting support plate 43, and the side wall of the L-shaped push-pull frame 501 is slidably connected to a convex slide 502, and the side wall of the convex slide 502 is fixedly connected to a spray box 503, and the side wall of the spray box 503 is connected to a liquid inlet pipe 504, and the inner wall of the separation cylinder 101 is fixedly connected to a fixed support plate 505, and the inner wall of the fixed support plate 505 is fixedly connected to a suction pipe 506.

[0057] The interior of the dip tube 506 is provided with a suction assembly 6, which includes a suction hollow rod 601 slidably connected to the central axis of the bottom of the dip tube 506. The outer wall of the suction hollow rod 601 is connected to one end of the liquid inlet pipe 504. The outer wall of the suction hollow rod 601 is fixedly connected to a fixed disc 602. This is so that the fixed disc 602 pulls the piston 603. The outer wall of the suction hollow rod 601 is provided with a suction port 604. This is so that the cleaning water can enter through the suction port 604. The outer wall of the hollow drawing rod 601 is provided with a piston 603, and the outer wall of the piston 603 is slidably connected to the inner wall of the drawing tube 506. The top of the hollow drawing rod 601 is fixedly connected to a connecting cylinder 605, and the inner wall of the connecting cylinder 605 is fixedly connected to a spring 606. The end of the spring 606 away from the connecting cylinder 605 is fixedly connected to a glass ball 607. The inner wall of the drawing tube 506 is fixedly connected to a drawing pipe 609, and one end of the drawing pipe 609 passes through the outer wall of the cleaning liquid storage cylinder 202 and extends to the interior.

[0058] like Figure 11 As shown, after the sand and gravel filtering is completed in the existing natural gas sand removal and separation equipment, it is difficult to remove the sand and gravel. It is necessary to stop the natural gas transmission and manually disassemble the equipment before the sand can be taken out. Continuous sand removal and sand cleaning cannot be achieved, which is inconvenient for users to use. The outer wall of the rotating rod 403 is provided with a sand discharge mechanism 7, which includes a belt 701 sleeved on the outer wall of the rotating rod 403. The inner wall of the belt 701 is connected to a rotating shaft 702 for transmission. The rotating shaft 702 passes through the outer wall of the separation cylinder 101 and extends to the outside. The outer wall of the rotating shaft 702 is fixedly connected to a spiral conveying plate 703, and the inner wall of the separation cylinder 101 is fixedly connected to a filter plate 704. The filter plate 704 The side wall is arranged in contact with the outer wall of the spiral conveying plate 703, the outer wall of the separation cylinder 101 is fixedly connected to the collection box 705, and the inner wall of the collection box 705 is detachably provided with a collection frame 706. When impurities and water in the natural gas fall into the filter plate 704, the rotating rod 403 drives the rotating shaft 702 to rotate through the belt 701, and the rotating shaft 702 drives the spiral conveying plate 703 to scratch the filter plate 704. At the same time, the spiral conveying plate 703 transports impurities on the filter plate 704 to prevent dirt from clogging the filter plate 704, and transports the impurities to the collection frame 706 in the collection box 705 to collect the impurities, thereby improving the practicality of the device.

[0059] like Figure 12 As shown, specifically, the method for using the wellhead continuous natural gas desanding and separation equipment is as follows: when in use, the wellhead gas pipeline 102 is connected to the wellhead, the exhaust fan 104 is started, and the exhaust fan 104 sucks out the treated natural gas through the exhaust pipe 103. When the natural gas with sand particles enters the conical separation box 301, the guide spiral plate 303 guides the natural gas, so that the airflow changes from linear motion to circular motion. Most of the rotating airflow moves along the wall of the device in a spiral downward and flows toward the bottom of the cone. The dust-laden natural gas generates centrifugal force during the rotation process, and the particles with a density greater than that of the natural gas are thrown onto the inner wall of the conical separation box 301. Once the sand particles come into contact with the inner wall of the conical separation box 301, they lose their inertia and rely on the gravity of the sand particles themselves to move along the wall. The sand particles fall down and are discharged above the filter plate 704 through the sand discharge pipe 309. When the rotating and descending outward swirling airflow reaches the bottom of the separation tube 302, the natural gas moves upward along the separation tube 302 and enters the separation cylinder 304 because the density of the natural gas is lower than that of the air. During the flow of the natural gas, the inclination of the separation baffle 305 changes the flow direction of the natural gas, so that the flowing natural gas has a greater inertia and collides with the separation baffle 305, so that the dust and a large amount of water are separated from the natural gas. The dust and water droplets are discharged from the liquid outlet 307 through the connecting pipe 306 into the conical separation box 301, thereby separating a large amount of liquid and large-diameter dust in the natural gas, and realizing the separation of sand and natural gas.

[0060] The cleaning liquid is then pumped into the filter plate 704 and the filtered water is then drawn into the filter plate 704 for reuse.

[0061] When the natural gas cleaned by the separation component 3 is discharged from the U-shaped tube 308 into the separation cylinder 101, the outlet pipe 103 and the sliding suction cylinder 408 are sucked, so that the separation membrane 44 can perform secondary purification on the natural gas, and the servo motor 402 drives the rotating rod 403 to rotate, and the rotating rod 403 drives the disc 404 and the fixed shaft 405 to move, and the fixed shaft 405 pulls the push-pull rod 407 to move through the push-pull plate 406. Since the sliding suction cylinder 408 slides in the outlet pipe 103, the push-pull rod 407 drives the sliding suction cylinder 408 to perform reciprocating lateral movement, the sliding suction cylinder 408 drives the limit frame 409 to move, the limit frame 409 drives the slide rod 41 and the connecting seat 42 to move, and the connecting seat 42 slides in the reciprocating groove 47 through the lifting rod 48, so that the connecting seat 42 can move up and down while moving laterally, and the connecting seat 42 can oscillate the separation membrane 44 through the lifting support plate 43, so that the sand and gravel on the separation membrane 44 can fall quickly under vibration, thereby avoiding blockage of the separation membrane 44 and improving the cleaning efficiency.

[0062] When the lifting support plate 43 is lifted and lowered back and forth, the lifting support plate 43 pulls the spray box 503 to lift and lower back and forth through the L-shaped push-pull frame 501 and the convex slide plate 502, and the spray box 503 drives the liquid inlet pipe 504 to move. When the hollow drawing rod 601 descends, the hollow drawing rod 601 drives the connecting cylinder 605 to descend. Because the friction between the piston 603 and the drawing tube 506 is greater than the friction between the hollow drawing rod 601 and the piston 603, the piston 603 can only be pulled by the connecting cylinder 605. When the piston 603 contacts the connecting cylinder 605, the piston 603 blocks the drawing port 604, thereby forming a negative pressure on the piston 603. During the continued descent, the glass ball 607 releases the restriction on the water inlet at the top of the drawing tube 506. During the descent process, the piston 603 causes the cleaning water in the cleaning liquid storage cylinder 202 to enter the suction tube 506 through the suction pipe 609 through the negative pressure. When the liquid inlet pipe 504 drives the suction hollow rod 601 to rise, the glass ball 607 blocks the water inlet at the top of the suction tube 506. The suction hollow rod 601 pushes the piston 603 to continue to rise through the fixed disc 602. The piston 603 enters the liquid in the suction tube 506 to squeeze it. During the squeezing process, the liquid is discharged into the suction hollow rod 601 through the suction port 604 and is discharged into the spray tank 503 from the liquid inlet pipe 504. The spray tank 503 cleans the separation membrane 44, further improving the service life of the device. It does not require manual replacement and is more convenient to operate.

[0063] When impurities and water in the natural gas fall into the filter plate 704, the rotating rod 403 drives the rotating shaft 702 to rotate through the belt 701, and the rotating shaft 702 drives the spiral conveying plate 703 to scrape the filter plate 704. At the same time, the spiral conveying plate 703 transports impurities on the filter plate 704 to prevent dirt from clogging the filter plate 704, and transports the impurities to the collection frame 706 in the collection box 705 to collect the impurities, thereby improving the practicality of the device.

[0064] The above are merely examples of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0065] The above is only a specific implementation method of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this application, which should be covered by the protection scope of the present application.

Claims

1. A wellhead continuous natural gas desanding and separation device, comprising a separation cylinder (101), wherein the outer wall of the separation cylinder (101) is connected to a wellhead gas pipeline (102), an outer wall of the separation cylinder (101) is fixedly connected to an outlet pipe (103), and an end of the outlet pipe (103) away from the separation cylinder (101) is fixedly connected to an outlet blower (104), characterized in that: Also includes: A separation mechanism (2), the separation mechanism (2) comprising a fixing frame (201) fixedly connected to the outer wall of the separation cylinder (101), a cleaning liquid storage cylinder (202) fixedly connected to the side wall of the fixing frame (201), a liquid adding pipe (203) being provided in communication with the outer wall of the cleaning liquid storage cylinder (202), a liquid suction pipe (204) fixedly connected to the bottom end of the cleaning liquid storage cylinder (202), one end of the liquid suction pipe (204) penetrating the outer wall of the separation cylinder (101) and extending to the interior; A separation assembly (3), the separation assembly (3) comprising a conical separation box (301) fixedly connected to the outer wall of the wellhead gas transmission pipe (102), a separation pipe (302) being provided at the top center axis of the conical separation box (301), the top end of the separation pipe (302) passing through the inner wall of the conical separation box (301) and extending to the outside, a guide spiral plate (303) being fixedly connected to the outer wall of the separation pipe (302), and the guide spiral plate (303) being located inside the conical separation box (301); The outer wall of the separation cylinder (101) is provided with a reciprocating mechanism (4), the reciprocating mechanism (4) comprises a fixed bracket (401) fixedly connected to the outer wall of the separation cylinder (101), the inner wall of the fixed bracket (401) is fixedly connected to a servo motor (402), the output end of the servo motor (402) is fixedly connected to a rotating rod (403), the rotating rod (403) passes through the outer wall of the separation cylinder (101) and extends to the interior, and the side of the rotating rod (403) is fixedly connected to the outer wall of the separation cylinder (101). A disc (404) is provided on the wall, the side wall of the disc (404) is fixedly connected to a fixed shaft (405), the outer wall of the fixed shaft (405) is rotatably connected to a push-pull plate (406), one end of the push-pull plate (406) away from the fixed shaft (405) is rotatably connected to a push-pull rod (407), one end of the push-pull rod (407) is fixedly connected to a sliding suction cylinder (408), and the outer wall of the sliding suction cylinder (408) is slidably connected to the inner wall of the outlet pipe (103); The outer wall of the sliding suction cylinder (408) is fixedly connected to the limiting frame (409), the inner wall of the limiting frame (409) is slidably connected to a sliding rod (41), the outer wall of the sliding rod (41) is fixedly connected to a connecting seat (42), the bottom of the connecting seat (42) is fixedly connected to a lifting support plate (43), the inner wall of the lifting support plate (43) is fixedly connected to a separation membrane (44), and one end of the separation membrane (44) away from the lifting support plate (43) is fixedly connected to the outer wall of the sliding suction cylinder (408); A water spray mechanism (5) is provided on the top of the lifting support plate (43), and the water spray mechanism (5) comprises an L-shaped push-pull frame (501) fixedly connected to the top of the lifting support plate (43); a convex slide plate (502) is slidably connected to the side wall of the L-shaped push-pull frame (501); a spray tank (503) is fixedly connected to the side wall of the convex slide plate (502); a liquid inlet pipe (504) is provided in communication with the side wall of the spray tank (503); a fixed support plate (505) is fixedly connected to the inner wall of the separation cylinder (101); and a suction pipe (506) is fixedly connected to the inner wall of the fixed support plate (505); The interior of the suction tube (506) is provided with a suction assembly (6), and the suction assembly (6) includes a suction hollow rod (601) slidably connected to the bottom center axis of the suction tube (506), the outer wall of the suction hollow rod (601) is connected to one end of the liquid inlet pipe (504), the outer wall of the suction hollow rod (601) is fixedly connected to a fixed disk (602), the outer wall of the suction hollow rod (601) is provided with a suction port (604), and the outer wall of the suction hollow rod (601) is provided with a piston (603). The outer wall of the piston (603) is slidably connected to the inner wall of the dipping tube (506); the top end of the dipping hollow rod (601) is fixedly connected to a connecting cylinder (605); the inner wall of the connecting cylinder (605) is fixedly connected to a spring (606); the end of the spring (606) away from the connecting cylinder (605) is fixedly connected to a glass ball (607); the inner wall of the dipping tube (506) is fixedly connected to a dipping pipe (609); one end of the dipping pipe (609) passes through the outer wall of the cleaning liquid storage cylinder (202) and extends to the interior.

2. The wellhead continuous natural gas desanding and separation equipment according to claim 1, characterized in that: The separation mechanism (2) further comprises a liquid suction pipe (205) fixedly connected to the top of the cleaning liquid storage cylinder (202); one end of the liquid suction pipe (205) away from the cleaning liquid storage cylinder (202) is fixedly connected to a water pump (206); a drainage end of the water pump (206) is fixedly connected to a drainage pipe (207); a liquid storage chamber (208) is provided inside the separation cylinder (101); one end of the drainage pipe (207) passes through the top of the separation cylinder (101) and extends into the liquid storage chamber (208); and a pressurized nozzle (209) is fixedly connected to the inner wall of the liquid storage chamber (208).

3. The wellhead continuous natural gas desanding and separation equipment according to claim 2, characterized in that: The separation assembly (3) further comprises a separation cylinder (304) fixedly connected to the inner wall of the separation cylinder (101); the top end of the separation tube (302) penetrates the bottom of the separation cylinder (304) and extends into the interior; a separation baffle (305) is fixedly connected to the inner wall of the separation cylinder (304); the bottom end of the pressurized nozzle (209) penetrates the top of the separation cylinder (304) and extends into the interior; a connecting pipe (306) is provided at the bottom of the separation cylinder (304); a liquid outlet (307) is provided on the outer wall of the connecting pipe (306); the liquid outlet (307) is located inside the conical separation box (301); a U-shaped pipe (308) is provided on the outer wall of the separation cylinder (304); one end of the U-shaped pipe (308) penetrates the outer wall of the separation cylinder (101) and extends into the interior.

4. The wellhead continuous natural gas desanding and separation equipment according to claim 3, characterized in that: A sand discharge pipe (309) is fixedly connected to the bottom of the conical separation box (301). One end of the sand discharge pipe (309) away from the conical separation box (301) passes through the outer wall of the separation cylinder (101) and extends to the interior. A one-way valve (310) is provided on the outer wall of the sand discharge pipe (309).

5. The wellhead continuous natural gas desanding and separation equipment according to claim 1, characterized in that: The inner wall of the separation cylinder (101) is fixedly connected to a fixed plate (45), the side wall of the fixed plate (45) is fixedly connected to a reciprocating plate (46), the side wall of the reciprocating plate (46) is provided with a reciprocating groove (47), the inner wall of the reciprocating groove (47) is slidably connected to a lifting rod (48), and the end of the lifting rod (48) away from the reciprocating groove (47) is fixedly connected to the side wall of the connecting seat (42).

6. The method for using the wellhead continuous natural gas desanding and separation equipment according to claim 5, characterized in that: The steps include: S1: The wellhead gas transmission pipe (102) is connected to the wellhead, and the outlet blower (104) is started. The outlet blower (104) sucks out the processed natural gas through the outlet pipe (103). When the natural gas with sand particles enters the interior of the conical separation box (301), the guide spiral plate (303) guides the natural gas, and the particles with a density greater than that of the natural gas are thrown toward the inner wall of the conical separation box (301). The fallen sand particles are discharged to the top of the filter plate (704) through the sand discharge pipe (309). When the rotating and descending outward swirling airflow reaches the bottom end of the separation tube (302), the natural gas moves upward along the separation tube (302) and enters the separation cylinder (304); S2: The liquid adding pipe (203) adds appropriate cleaning water to the cleaning liquid storage cylinder (202), and the water pump (206) is started. The water pump (206) sucks the liquid in the cleaning liquid storage cylinder (202) into the drain pipe (207) through the liquid suction pipe (205). The drain pipe (207) discharges the cleaning liquid into the liquid storage chamber (208), and cleans the separation baffle (305) through the pressure nozzle (209); S3: When the natural gas cleaned by the separation component (3) is discharged from the U-shaped tube (308) into the separation cylinder (101), the outlet pipe (103) and the sliding suction cylinder (408) are sucked, the servo motor (402) drives the rotating rod (403) to rotate, the rotating rod (403) drives the disc (404) and the fixed shaft (405) to move, and the fixed shaft (405) pulls the push-pull rod (407) to move through the push-pull plate (406). Since the sliding suction cylinder (408) is in the outlet pipe (10 3) Internal sliding, which can make the push-pull rod (407) drive the sliding suction cylinder (408) to perform reciprocating lateral movement, the sliding suction cylinder (408) drives the limit frame (409) to move, the limit frame (409) drives the slide rod (41) and the connecting seat (42) to move, the connecting seat (42) slides in the reciprocating groove (47) through the lifting rod (48), so that the connecting seat (42) moves in the lateral direction and simultaneously performs lifting movement, and the connecting seat (42) causes the separation membrane (44) to oscillate through the lifting support plate (43); S4: The lifting support plate (43) pulls the liquid spray box (503) to move back and forth through the L-shaped push-pull frame (501) and the convex slide plate (502). The liquid spray box (503) drives the liquid inlet pipe (504) to move, and water is absorbed through the reciprocating movement of the suction component (6). The absorbed water is discharged from the liquid inlet pipe (504) into the liquid spray box (503), and the liquid spray box (503) cleans the separation membrane (44).

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