CN118045432B - Sand removing device for natural gas wellhead - Google Patents
Sand removing device for natural gas wellhead Download PDFInfo
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- CN118045432B CN118045432B CN202410453640.1A CN202410453640A CN118045432B CN 118045432 B CN118045432 B CN 118045432B CN 202410453640 A CN202410453640 A CN 202410453640A CN 118045432 B CN118045432 B CN 118045432B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/35—Arrangements for separating materials produced by the well specially adapted for separating solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Geology (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a sand removing device of a natural gas wellhead, which relates to the technical field of sand removing of natural gas wellheads and comprises a fixed seat, wherein the top of the fixed seat is fixedly connected with an opening and closing valve, the top of the opening and closing valve is fixedly connected with a tank body, and the middle part of the top of the tank body is fixedly connected with an air outlet pipe; the sand-reducing device also comprises a first-stage sand-reducing mechanism. This sand removal device of natural gas well head drives its rotation through the external motor of worm, the surface of worm and the surface meshing of two-sided ring gear, and the rotation of worm makes two-sided ring gear driven rotatory, and the surface of rotating the subassembly meshes with the medial surface of two-sided ring gear, and the rotating assembly is driven and rotates, and the screw rod upwards spiral rotates and makes seal assembly and abnormal shape pipe separation, and natural gas upwards flows the solid particle that will abnormal shape intraduct to dash out, has solved solid particle such as detritus, sand stone and the problem that the natural gas that flows at a high speed brings the well head to the collection and transportation equipment to cause the erosion.
Description
Technical Field
The invention relates to the technical field of natural gas wellhead sand removal, in particular to a natural gas wellhead sand removal device.
Background
At present, in the development process of loose rock gas reservoirs in China, because loose sandstone gas reservoirs are shallow in burial and poor in rock cementation, and the clay and impurity contents are high, sand is easy to produce in the exploitation process, corrosion and blockage of ground equipment and oil pipe pipelines are easy to occur after sand is produced in a gas well, exploitation cost is increased, most natural gas fields contain liquid water, natural gas hydrate is easy to form in the exploitation and conveying processes if temperature control is poor, pipelines are blocked, production and even safety accidents are caused, most of the sand-containing natural gas is conveyed into a treatment station through a gathering and conveying pipeline network in China at present, firstly, injection or multi-well natural gas furnace heating and antifreezing are carried out, and then gas, liquid and solid three-phase separation is carried out through a large three-phase separator, so that treatment has a certain limitation, firstly, because wellhead produced gas contains stratum sand, certain damage is caused to pipelines and heating equipment in the heating process of gathering pipeline conveying and heating furnace heating, and secondly, the control of the natural gas hydrate must strictly control the temperature of pipeline conveying and gas. The newly extracted natural gas contains liquid water, the transportation and the use of the natural gas are affected by the existence of the liquid water, the newly extracted natural gas is often required to be further separated and processed for use, and the common removal mode is relatively expensive or has low filtration degree.
The existing sand removing device for the natural gas wellhead has the problems that solid particles such as rock scraps, sand and stone are carried out of the wellhead by natural gas flowing at high speed to cause erosion to gathering and conveying equipment due to structural design defects, and centrifugal sand removing effect is poor because natural gas is always under exploitation and has high air pressure.
Disclosure of Invention
The invention provides a sand removing device for a natural gas wellhead, which solves the problems in the background art.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the sand removing device of the natural gas wellhead comprises a fixed seat, wherein the top of the fixed seat is fixedly connected with an opening and closing valve, the top of the opening and closing valve is fixedly connected with a tank body, and the middle part of the top of the tank body is fixedly connected with an air outlet pipe; further comprises:
the bottom of the first-stage sand-reducing mechanism is fixedly arranged below the surface of the tank body, and the first-stage sand-reducing mechanism is used for diversion guide of natural gas and primary sand removal in the device;
the surface of the secondary sand-reducing mechanism is fixedly arranged on the inner side surface of the tank body, and the secondary sand-reducing mechanism is used for baffling sand reduction of natural gas and collection and export of piled sand reduction;
The first-level sand-reducing mechanism comprises a special pipe, the top of the special pipe is fixedly connected with a connecting plate, the top of the connecting plate is fixedly connected with a supporting shell, the inner side surface of the supporting shell is rotationally connected with a rotating assembly, the inner side surface of the rotating assembly is connected with a screw through threads, the bottom end of the screw is provided with a sealing assembly, the rotating assembly is used for driving the screw to lift and move, and the sealing assembly is used for blocking and discharging natural gas.
Preferably, the first-stage sand reducing mechanism further comprises a double-sided toothed ring and a single-sided toothed ring, the double-sided toothed ring and the single-sided toothed ring are both rotationally connected with the inner side surface of the supporting shell, the inner side surface of the supporting shell is rotationally connected with a worm near the double-sided toothed ring, natural gas is introduced into the special-shaped pipe through the opening and closing valve, the device is provided with a plurality of special-shaped pipes to split the natural gas, the natural gas carries fine sand and stone to strike on the surface of the second-stage sand reducing mechanism, sand and stone and a small amount of water are adhered to the surface of the second-stage sand reducing mechanism to realize sand reduction, and when the natural gas is guided upwards by the special-shaped pipe, sand and stone solid particles in the natural gas are partially deposited at the bending parts of the special-shaped pipe, and the natural gas can be blocked along with the deposition of the sand and stone.
Preferably, the rotating assembly comprises a rotating gear, the bottom of the rotating gear is rotationally connected with the inner side surface of the supporting shell, and the bottom of the rotating gear is fixedly connected with the pressing shell.
Preferably, the rotating assembly further comprises an internal thread sleeve, the bottom of the internal thread sleeve is fixedly arranged at the top of the rotating gear, the bottom of the rotating gear is connected with a ball body in a rolling mode, the fixed seat is fixedly connected with the ground surface, the on-off valve is in an open state, natural gas flows from underground to the inside of the special-shaped tube, the surface of the extrusion ball is embedded into the inner side surface of the inner concave surface, the lower position of the surface of the lifting column is in interference fit with the inner side surface of the special-shaped tube, natural gas cannot flow out through the top of the special-shaped tube, the special-shaped tube divides the natural gas so as to reduce the local air pressure of the natural gas impinging on the surface of the second sand-reducing mechanism, but impurities such as rock fragments, sand and the like can be deposited on the bending part of the inner side surface of the special-shaped tube, and at the moment, the worm drives the double-sided toothed ring to rotate.
Preferably, the sealing assembly comprises a lifting column, the top of the lifting column is rotationally connected with the bottom end of the driving screw rod, and the bottom of the lifting column is provided with an inner concave surface.
Preferably, the sealing assembly further comprises a limiting body, the surface of the limiting body is fixedly connected with the lower position of the surface of the special-shaped tube, and the top end of the limiting body is fixedly connected with an extrusion ball.
Preferably, the second grade mechanism that falls sand includes the sand pipe, the one end fixed mounting of sand pipe is in the below position on jar body surface, the one end fixedly connected with screw conveyer that the jar body was kept away from to the sand pipe, the bottom fixedly connected with pneumatic cylinder of jar internal side, most utilize the filter screen to detach the inside sand and stones of natural gas in the current device, however, carry out frequent change to the filter screen and can reduce the exploitation efficiency of natural gas, utilize the centrifugal effect to remove sand to the natural gas, the natural gas is in flowing state always, gas and solid particle are difficult to be effectively separated, in the device, the natural gas is guided to the inside of jar body after the abnormal shape pipe reposition of redundant personnel, the natural gas carries the sand and stones striking at the surface of baffling subassembly.
Preferably, the second-stage sand-reducing mechanism further comprises a guide assembly, the surface of the guide assembly is fixedly connected to the lower position of the inner side surface of the tank body, the output end of the hydraulic cylinder is fixedly connected with a scraping assembly, and the upper position of the inner side surface of the tank body is connected with a baffling assembly.
Preferably, the baffle assembly comprises a necking plate, the surface of the necking plate is fixedly connected with the upper position of the inner side surface of the tank body, an air duct is fixedly connected to the middle position of the inner side surface of the necking plate, after natural gas is subjected to sand reduction for one time, the special pipe is used for splitting the natural gas, the local air pressure of the split natural gas is effectively reduced, the scraping groove is in direct contact with the surface of the baffle plate, the extension rod is positioned between the two baffle plates, the scraping shell is positioned above the baffle plates in an initial state, and the hydraulic cylinder drives the extension rod to move downwards along with the sediment of sand and stones on the surface of the baffle plate.
Preferably, the baffle assembly further comprises a baffle plate, the surface of the baffle plate is fixedly arranged on the surface of the air duct, and the surface of the air duct is provided with air guide holes.
Preferably, the scraping assembly comprises an extension rod, the bottom fixed mounting of extension rod is at the output of pneumatic cylinder, the top fixedly connected with of extension rod scrapes the shell, it is provided with the sand face that falls to scrape the top of moving the shell, scrape the surface of moving the shell and seted up and scrape the groove, a plurality of mechanical tubes evenly distributed is in the air duct periphery, at this moment, the screw rod is in the top position of mechanical tubes medial surface, the extrusion ball hinders the downmovement of lifting column, the bottom of lifting column takes place deformation, the surface of lifting column closely laminates with the medial surface of mechanical tubes, natural gas is obstructed unable to discharge through the mechanical tubes, the inside sand and stone of natural gas deposits in the bottom of lifting column a small amount, the lift of lifting column realizes once the sediment, a plurality of baffling boards evenly distributed are in the periphery of air duct.
Preferably, the guide assembly comprises an opening shell, the bottom of the opening shell is fixedly connected with the top of the hydraulic cylinder, the middle part of the inner side surface of the opening shell is fixedly connected with an electric turntable, and the output end of the electric turntable is rotationally connected with a squeeze roller.
The invention provides a sand removing device for a natural gas wellhead. The beneficial effects are as follows:
1. This sand removal device of natural gas well head, the external motor of worm drives its rotation, the surface of worm meshes with the surface of two-sided ring gear, the rotation of worm makes two-sided ring gear by driving rotatory, the surface of rotating the subassembly meshes with the medial surface of two-sided ring gear, rotating the subassembly and being driven and rotating, the screw rod upwards spiral rotates and makes seal assembly and abnormal shape pipe separation, natural gas upwards flows the solid particle that will abnormal shape intraduct out, the problem that the solid particle such as detritus, sand stone was brought the well head by the natural gas of high-speed flow and caused the erosion to gathering and transportation equipment has been solved.
2. This sand removing device of natural gas well head, the medial surface of double-sided ring gear and the surface engagement of turning gear, turning gear is driven rotatory, and the surface of screw rod is connected through the screw thread with the medial surface of internal thread cover to make the screw rod upwards spiral rotation, the lifting column is driven upwards and removes, and natural gas carries the sand and stone of deposit to dash out through the top of mechanical tubes, thereby utilizes the atmospheric pressure of natural gas self to realize the sand and stone of the inside sand and stone of natural gas once.
3. This sand removing device of natural gas well head, because gravity inertia's difference, sand and stone and a small amount of moisture deposit are at the surface of baffling subassembly, gas passes through the middle part position of baffling subassembly and upwards flows, natural gas after the purification removes sand is collected through the outlet duct, natural gas is in flow state, pneumatic cylinder drives and scrapes the subassembly lift and remove, scrape the medial surface of subassembly and baffling subassembly in close contact with and scrape, thereby scrape the sand and stone of baffling subassembly surface deposit to guide assembly, screw conveyer is with the sand and stone transportation out the jar body of deposit in jar body bottom, the natural gas has been solved and has been in exploitation atmospheric pressure greatly and make the not good problem of centrifugal sand removal effect always.
4. This sand removing device of natural gas wellhead scrapes movable housing and promotes sand and stone to deposit downwards at the top of trompil shell, at this moment, natural gas still is in the state of flowing impact, still a small amount of sand and stone deposit on the surface of baffling board, when the trompil shell upwards removes, the sand and stone of deposit can roll the whereabouts at the surface of sand face that falls, sand and stone and a small amount of moisture fall to the top of trompil shell, the squeeze roll sets up the middle part position at double-deck trompil shell, the squeeze roll is driven rotatoryly by electric turntable, the sand and stone passes through the position of trompil shell slowly whereabouts to the sand pipe, sand and stone and a small amount of moisture are slowly derived, can effectively prevent that natural gas from leading to natural gas collection inefficiency through the backflow of sand pipe.
5. This sand removal device of natural gas well head, the even striking of natural gas is at the surface of baffle, the sand stone striking that the inside carried of natural gas is at the surface of baffle, the baffling structure of baffle makes sand stone can direct impact at the outward flange of baffle, most sand stone solid particles whereabouts is to the top of trompil shell, a small amount of sand stone deposit is kept away from the surface of air duct at the baffle, the natural gas after purifying gets into the air duct through the air duct, thereby realize the secondary sand removal of natural gas, make the natural gas by effective purification through the sediment removal of twice.
Drawings
FIG. 1 is a perspective view of the entire sand removal device of the natural gas wellhead of the present invention;
FIG. 2 is a perspective view of the interior of the sand removal apparatus of the natural gas wellhead of the present invention;
FIG. 3 is a schematic diagram of a first stage sand reduction mechanism according to the present invention;
FIG. 4 is a schematic view of a rotating assembly according to the present invention;
FIG. 5 is a schematic view of the seal assembly of the present invention;
FIG. 6 is a schematic diagram of a two-stage sand reduction mechanism according to the present invention;
FIG. 7 is a schematic view of the structure of the baffle assembly of the present invention;
FIG. 8 is a schematic view of a scraping assembly according to the present invention;
fig. 9 is a schematic structural view of the guide assembly of the present invention.
In the figure: 1. a fixing seat; 2. opening and closing the valve; 3. a tank body; 4. an air outlet pipe; 5. a first-stage sand reducing mechanism; 51. a special-shaped tube; 52. a connecting plate; 53. a support case; 54. double-sided toothed rings; 55. a single face toothed ring; 56. a worm; 57. a rotating assembly; 571. rotating the gear; 572. an internal thread sleeve; 573. pressing the shell; 574. a sphere; 58. a screw; 59. a seal assembly; 591. lifting columns; 592. an inner concave surface; 593. a limiting body; 594. extruding the ball; 6. a second-stage sand reducing mechanism; 61. a sand guiding pipe; 62. a screw conveyor; 63. a hydraulic cylinder; 64. a baffle assembly; 641. a necking plate; 642. an air duct; 643. a baffle plate; 644. an air guide hole; 65. a scraping assembly; 651. an extension rod; 652. scraping the shell; 653. sand falling surface; 654. scraping the groove; 66. a guide assembly; 661. a perforated shell; 662. an electric turntable; 663. squeeze rolls.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
First embodiment: as shown in fig. 1-3, the present invention provides a technical solution: the sand removing device of the natural gas wellhead comprises a fixed seat 1, wherein the top of the fixed seat 1 is fixedly connected with an opening and closing valve 2, the top of the opening and closing valve 2 is fixedly connected with a tank body 3, and the middle part of the top of the tank body 3 is fixedly connected with an air outlet pipe 4; further comprises:
the first-stage sand-reducing mechanism 5 is fixedly arranged below the surface of the tank body 3 at the bottom of the first-stage sand-reducing mechanism 5, and the first-stage sand-reducing mechanism 5 is used for diversion and guiding of natural gas and primary sand removal in the device;
The secondary sand-reducing mechanism 6 is fixedly arranged on the surface of the secondary sand-reducing mechanism 6 on the inner side surface of the tank body 3, and the secondary sand-reducing mechanism 6 is used for baffling sand reduction of natural gas and collection and export of piled sand reduction;
the first-stage sand reducing mechanism 5 comprises a special pipe 51, a connecting plate 52 is fixedly connected to the top of the special pipe 51, a supporting shell 53 is fixedly connected to the top of the connecting plate 52, a rotating assembly 57 is rotatably connected to the inner side surface of the supporting shell 53, a screw 58 is connected to the inner side surface of the rotating assembly 57 through threads, a sealing assembly 59 is installed at the bottom end of the screw 58, the rotating assembly 57 is used for driving the screw 58 to lift and move, and the sealing assembly 59 is used for blocking and discharging natural gas;
the first-stage sand reducing mechanism 5 further comprises a double-sided toothed ring 54 and a single-sided toothed ring 55, the double-sided toothed ring 54 and the single-sided toothed ring 55 are both rotationally connected with the inner side surface of the supporting shell 53, and a worm 56 is rotationally connected to the inner side surface of the supporting shell 53 at a position close to the double-sided toothed ring 54.
When the natural gas is guided upwards by the special pipe 51, sand and stone solid particles in the natural gas are partially deposited at the bending part of the special pipe 51, the natural gas is blocked by the sand and stone deposition, a worm 56 is connected with a motor to drive the natural gas to rotate, the surface of the worm 56 is meshed with the outer surface of the double-sided toothed ring 54, the double-sided toothed ring 54 is driven to rotate by the rotation of the worm 56, the surface of the rotating assembly 57 is meshed with the inner side surface of the double-sided toothed ring 54, the rotating assembly 57 is driven to rotate, the screw 58 is spirally rotated upwards to enable the sealing assembly 59 to be separated from the special pipe 51, and the natural gas upwards flows to flush solid particles in the special pipe 51, so that the problem that rock debris, sand and stone and other solid particles are corroded by the natural gas which flows at high speed to bring out of a wellhead to a gathering device is solved.
Second embodiment: as shown in fig. 3, 4 and 5, the rotating assembly 57 includes a rotating gear 571, the bottom of the rotating gear 571 is rotationally connected with the inner side surface of the supporting shell 53, the bottom of the rotating gear 571 is fixedly connected with a pressing shell 573, the rotating assembly 57 further includes an internal thread sleeve 572, the bottom of the internal thread sleeve 572 is fixedly installed at the top of the rotating gear 571, the bottom of the rotating gear 571 is rotationally connected with a ball 574, the sealing assembly 59 includes a lifting column 591, the top of the lifting column 591 is rotationally connected with the bottom of the driving screw 58, an inner concave surface 592 is provided at the bottom of the lifting column 591, the sealing assembly 59 further includes a limiting body 593, the surface of the limiting body 593 is fixedly connected with the lower position of the surface of the special pipe 51, and the top of the limiting body 593 is fixedly connected with a pressing ball 594.
When the sand removing device is used, the fixed seat 1 is firmly connected with the ground surface, the start-stop valve 2 is in an opened state, natural gas flows from underground to the inside of the special-shaped tube 51, at the moment, the surface of the extrusion ball 594 is embedded into the inner side surface of the inner concave surface 592, the lower position of the surface of the lifting column 591 is in interference fit with the inner side surface of the special-shaped tube 51, natural gas cannot flow out through the top of the special-shaped tube 51, the special-shaped tube 51 divides the natural gas so as to reduce the local air pressure of the natural gas impinging on the surface of the second sand removing mechanism 6, but impurities such as rock scraps, sand and the like can be deposited at the bending part of the inner side surface of the special-shaped tube 51, at the moment, the worm 56 drives the double-sided toothed ring 54 to rotate, the inner side surface of the double-sided toothed ring 54 is meshed with the surface of the rotary gear 571, the rotary gear 571 is driven to rotate, the friction resistance of the ball 574 effectively reduces the rotary gear 571, the surface of the screw 58 is connected with the inner side surface of the inner threaded sleeve 572 through threads, the screw 58 is enabled to rotate upwards in a spiral, the lifting column 591 is driven to move upwards, and the deposited sand is flushed out through the top of the special-shaped tube 51, and the natural gas can realize sand removal of the natural gas.
Third embodiment: as shown in fig. 3 and 6, the top of the connecting plate 52 is fixedly connected with a supporting shell 53, the inner side surface of the supporting shell 53 is rotationally connected with a rotating assembly 57, the inner side surface of the rotating assembly 57 is connected with a screw 58 through threads, the bottom end of the screw 58 is provided with a sealing assembly 59, the rotating assembly 57 is used for driving the screw 58 to lift and move, and the sealing assembly 59 is used for blocking and discharging natural gas;
The first-stage sand-reducing mechanism 5 further comprises a double-sided toothed ring 54 and a single-sided toothed ring 55, the double-sided toothed ring 54 and the single-sided toothed ring 55 are both rotationally connected with the inner side surface of the supporting shell 53, a worm 56 is rotationally connected to the inner side surface of the supporting shell 53 close to the double-sided toothed ring 54, the second-stage sand-reducing mechanism 6 comprises a sand guiding pipe 61, one end of the sand guiding pipe 61 is fixedly arranged at the lower position of the surface of the tank body 3, one end of the sand guiding pipe 61, far away from the tank body 3, is fixedly connected with a screw conveyer 62, the bottom of the inner side surface of the tank body 3 is fixedly connected with a hydraulic cylinder 63, the second-stage sand-reducing mechanism 6 further comprises a guide assembly 66, the surface of the guide assembly 66 is fixedly connected to the lower position of the inner side surface of the tank body 3, the output end of the hydraulic cylinder 63 is fixedly connected with a scraping assembly 65, and the upper position of the inner side surface of the tank body 3 is connected with a baffle assembly 64.
During the use, most utilize the filter screen to get rid of the inside sand and stones of natural gas in the current device, however, carry out frequent change to the filter screen and can reduce the exploitation efficiency of natural gas, utilize centrifugal action to remove sand to the natural gas, natural gas is in the state of flowing all the time, gas and solid particle are difficult to be effectively separated, in this device, natural gas is guided to the inside of jar body 3 after passing through special-shaped tube 51 reposition of redundant personnel, natural gas carries the sand and stones striking at the surface of baffling subassembly 64, because the difference of gravity inertia, sand and stones and a small amount of moisture deposit on the surface of baffling subassembly 64, the gas flows upwards through the middle part position of baffling subassembly 64, the natural gas after the purification removes sand is collected through outlet duct 4, the natural gas is in the state of flowing, pneumatic cylinder 63 drives and scrapes the removal of subassembly 65, the medial surface of scraping the subassembly 65 and the scraping of subassembly 64 in close contact, thereby scrape down guide assembly 66 with the sand and stones deposited on the surface of baffling subassembly 64, screw conveyer 62 is with the sand and stones of depositing in jar body 3 bottom, the surface of the jar body 3, the natural gas is carried out the sand and stones, the surface of baffling subassembly 64, the natural gas is in the atmospheric pressure is in the place because the pneumatic pressure is bigger down and makes the centrifugal sand effect not good problem.
Fourth embodiment: as shown in fig. 6-9, the baffle assembly 64 includes a necking plate 641, the surface of the necking plate 641 is fixedly connected with the upper position of the inner side surface of the tank body 3, the middle position of the inner side surface of the necking plate 641 is fixedly connected with an air duct 642, the baffle assembly 64 further includes a baffle 643, the surface of the baffle 643 is fixedly installed on the surface of the air duct 642, the surface of the air duct 642 is provided with an air duct 644, the scraping assembly 65 includes an extension rod 651, the bottom end of the extension rod 651 is fixedly installed at the output end of the hydraulic cylinder 63, the top of the extension rod 651 is fixedly connected with a scraping shell 652, the top of the scraping shell 652 is provided with a sand falling surface 653, the surface of the scraping shell 652 is provided with a scraping groove 661, the guide assembly 66 includes an opening shell 661, the bottom of the opening shell is fixedly connected with the top of the hydraulic cylinder 63, the middle position of the inner side surface of the opening shell 661 is fixedly connected with an electric turntable 662, and the output end of the electric turntable 662 is rotationally connected with a squeeze roller 663.
When the natural gas sand-reducing device is used, natural gas is split by the special pipe 51 after sand is reduced once, local air pressure of the natural gas is effectively reduced after the natural gas is split, the scraping groove 654 is in direct contact with the surface of the baffle 643, the extending rod 651 is positioned at a position between the two baffles 643, the scraping shell 652 is positioned above the baffles 643 in an initial state, the hydraulic cylinder 63 drives the extending rod 651 to move downwards along with the deposition of sand and stones on the surface of the baffles 643, the scraping shell 652 pushes the sand and stones to be deposited downwards on the top of the perforated shell 661, at the moment, the natural gas is in a flowing impact state, a small amount of sand and stones still are deposited on the surface of the baffles 643, when the perforated shell 661 moves upwards, the deposited sand and stones can roll downwards on the surface of the sand-falling surface 653, the sand and stones and a small amount of water fall to the top of the perforated shell 661, the extruding roller 663 is arranged at the middle position of the double-layer perforated shell 661, the extruding roller 663 is driven by the electric turntable 662 to rotate, the sand and stones slowly fall to the position of the sand and stones through the perforated shell 661, and the sand and stones slowly fall to the top of the sand and stones are slowly and are slowly deposited on the surface of the baffle 643, and a small amount of sand and stones are deposited on the surface of the baffle 643, and a small amount of sand is deposited on the sand and a sand, and a small amount of sand is, and a sand, and a natural gas.
Fifth embodiment: as shown in fig. 5 and 7, the top of the lifting column 591 is rotationally connected with the bottom end of the driving screw 58, the bottom of the lifting column 591 is provided with an inner concave surface 592, the sealing assembly 59 further comprises a limiting body 593, the surface of the limiting body 593 is fixedly connected with the lower position of the surface of the special-shaped tube 51, the top end of the limiting body 593 is fixedly connected with a squeeze ball 594, the surface of the necking plate 641 is fixedly connected with the upper position of the inner side surface of the tank 3, the middle position of the inner side surface of the necking plate 641 is fixedly connected with an air duct 642, the baffle assembly 64 further comprises a baffle 643, the surface of the baffle 643 is fixedly arranged on the surface of the air duct 642, and the surface of the air duct 642 is provided with an air duct 644.
When the natural gas purifying device is used, the plurality of special pipes 51 are uniformly distributed on the periphery of the air guide pipe 642, at the moment, the screw 58 is positioned above the inner side surface of the special pipes 51, the extrusion ball 594 is used for blocking the downward movement of the lifting column 591, the bottom of the lifting column 591 is deformed, the surface of the lifting column 591 is tightly attached to the inner side surface of the special pipes 51, natural gas is blocked and cannot be discharged through the special pipes 51, a small amount of sand and stone in the natural gas is deposited at the bottom of the lifting column 591, primary sand and sand discharge is realized by lifting of the lifting column 591, the plurality of baffle plates 643 are uniformly distributed on the periphery of the air guide pipe 642, the natural gas uniformly impacts on the outer surface of the baffle plates 643, sand and stone carried by the natural gas impacts on the surface of the baffle plates 643, most of sand and stone solid particles fall to the top of the perforated shell 661, a small amount of sand and stone is deposited on the surface of the baffle plates 643, which is far away from the air guide pipe 642, and the natural gas enters the air guide pipe 642 through the air guide hole 644, and accordingly secondary sand and sand are effectively removed by natural gas through the secondary sand and gas purification.
Claims (1)
1. The sand removing device of the natural gas wellhead comprises a fixed seat (1), wherein the top of the fixed seat (1) is fixedly connected with an opening and closing valve (2), the top of the opening and closing valve (2) is fixedly connected with a tank body (3), and the middle part of the top of the tank body (3) is fixedly connected with an air outlet pipe (4); characterized by further comprising:
The first-stage sand-reducing mechanism (5) is fixedly arranged at the bottom of the first-stage sand-reducing mechanism (5) at a position below the surface of the tank body (3), and the first-stage sand-reducing mechanism (5) is used for diversion guide of natural gas and primary sand removal in the device;
The secondary sand-reducing mechanism (6) is fixedly arranged on the surface of the secondary sand-reducing mechanism (6) on the inner side surface of the tank body (3), and the secondary sand-reducing mechanism (6) is used for baffling and reducing natural gas and collecting and guiding out stacked sand;
the first-stage sand reduction mechanism (5) comprises a special pipe (51), the top of the special pipe (51) is fixedly connected with a connecting plate (52), the top of the connecting plate (52) is fixedly connected with a supporting shell (53), the inner side surface of the supporting shell (53) is rotationally connected with a rotating assembly (57), the inner side surface of the rotating assembly (57) is connected with a screw rod (58) through threads, the bottom end of the screw rod (58) is provided with a sealing assembly (59), the rotating assembly (57) is used for driving the screw rod (58) to lift, and the sealing assembly (59) is used for blocking and discharging natural gas;
The first-stage sand reduction mechanism (5) further comprises a double-sided toothed ring (54) and a single-sided toothed ring (55), the double-sided toothed ring (54) and the single-sided toothed ring (55) are both rotationally connected with the inner side surface of the supporting shell (53), and a worm (56) is rotationally connected to the inner side surface of the supporting shell (53) at a position close to the double-sided toothed ring (54);
the rotating assembly (57) comprises a rotating gear (571), the bottom of the rotating gear (571) is rotationally connected with the inner side surface of the supporting shell (53), and the bottom of the rotating gear (571) is fixedly connected with a pressing shell (573);
The rotating assembly (57) further comprises an internal thread sleeve (572), wherein the bottom of the internal thread sleeve (572) is fixedly arranged at the top of the rotating gear (571), and a ball body (574) is connected to the bottom of the rotating gear (571) in a rolling manner;
the sealing assembly (59) comprises a lifting column (591), the top of the lifting column (591) is rotationally connected with the bottom end of the driving screw rod (58), and an inner concave surface (592) is formed in the bottom of the lifting column (591);
the sealing assembly (59) further comprises a limiting body (593), the surface of the limiting body (593) is fixedly connected with the lower position of the surface of the special pipe (51), and the top end of the limiting body (593) is fixedly connected with an extrusion ball (594);
The secondary sand reducing mechanism (6) comprises a sand guide pipe (61), one end of the sand guide pipe (61) is fixedly arranged below the surface of the tank body (3), one end of the sand guide pipe (61) away from the tank body (3) is fixedly connected with a screw conveyer (62), and the bottom of the inner side surface of the tank body (3) is fixedly connected with a hydraulic cylinder (63);
The secondary sand-reducing mechanism (6) further comprises a guide assembly (66), the surface of the guide assembly (66) is fixedly connected to the lower position of the inner side surface of the tank body (3), the output end of the hydraulic cylinder (63) is fixedly connected with a scraping assembly (65), and the upper position of the inner side surface of the tank body (3) is connected with a baffle assembly (64);
The baffle assembly (64) comprises a necking plate (641), the surface of the necking plate (641) is fixedly connected with the upper position of the inner side surface of the tank body (3), and the middle position of the inner side surface of the necking plate (641) is fixedly connected with an air duct (642);
The baffle assembly (64) further comprises a baffle plate (643), the surface of the baffle plate (643) is fixedly arranged on the surface of the air duct (642), and the surface of the air duct (642) is provided with an air duct (644).
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