Foam drainage gas recovery underground automatic dosing device

Abstract

The invention discloses a foam drainage gas recovery underground automatic chemical adding device, and relates to the technical field of foam drainage gas recovery, the foam drainage gas recovery underground automatic chemical adding device comprises a sleeve, a gas pipe and a chemical storage tank, the outer side of the chemical storage tank is provided with a liquid outlet pump, a chemical suction pipe is fixedly communicated between the chemical storage tank and the liquid outlet pump, and the liquid outlet pump is fixedly communicated with a liquid outlet main pipe; the liquid outlet main pipe is fixedly communicated with a liquid outlet branch pipe, the lower end of the liquid outlet branch pipe is located in the air pipe, the liquid outlet branch pipe is provided with a pressure difference control valve, and the lower end of the liquid outlet branch pipe is closed and fixedly communicated with a one-way liquid inlet pipe. The device has the advantages that by controlling the flowing-out speed and angle of a medicament, the medicament is in effective contact with the hydrops quickly, meanwhile, the flowing-out angle of the medicament has different selections of reciprocating swing and any angle within the swing amplitude, effective contact between the medicament and the hydrops is improved more quickly, and the hydrops removing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foam drainage and gas production, and in particular to an automatic dosing device for foam drainage and gas production in a well. Background Art

[0002] In the middle and late production process of natural gas wells, liquid accumulation is easy to form in the water wells, affecting the operation of natural gas wells. Usually, foam drainage and gas production are used for drainage and gas production. For example, the patent document with application number CN201310199496.5 discloses an automatic dosing device and method for foam drainage and gas production. The device realizes automatic dosing, but there are still certain shortcomings during use: the agent flows along a fixed route, and the contact range with the accumulated liquid in the same time is limited, and the efficiency of removing the accumulated liquid needs to be improved. For this reason, we propose an automatic dosing device for foam drainage and gas production in underground wells to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to solve the problems raised in the background technology and to propose an automatic dosing device for underground foam drainage and gas production.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A foam drainage gas production underground automatic dosing device, comprising a casing, an air pipe, and a medicine storage tank, a liquid outlet pump is installed on the outer side of the medicine storage tank, and a medicine suction pipe is fixedly connected between the medicine storage tank and the liquid outlet pump, a liquid outlet main pipe is fixedly connected to the liquid outlet pump, and a valve is installed on the liquid outlet main pipe, a liquid outlet branch pipe is fixedly connected to the liquid outlet main pipe, and the lower end of the liquid outlet branch pipe is located in the air pipe, a pressure difference control valve is installed on the liquid outlet branch pipe, the lower end of the liquid outlet branch pipe is closed, and a one-way liquid inlet pipe is fixedly connected; An annular seat is rotatably mounted on the liquid outlet branch pipe through a connecting member, a medicine outlet position control member is installed between the air pipe and the annular seat, and a medicine outlet angle control member is arranged between the liquid outlet branch pipe and the annular seat for controlling the angle of medicine outlet, and the medicine outlet angle control member includes a self-adjusting component and a control angle component, and the self-adjusting component cooperates with the control angle component to control the operation of the control angle component; A plurality of liquid discharge cylinders are mounted on the annular seat via a plurality of swinging assemblies, and the swinging assemblies correspond one to one with the liquid discharge cylinders, and the control angle assemblies cooperate with the control angle assemblies, and elastic connecting pipe fittings are installed between the annular seat and the corresponding liquid discharge cylinders, and the liquid discharge cylinders are arranged with an opening at the lower end.

[0005] In the above-mentioned automatic dosing device for underground foam drainage gas production, the connecting component includes a connecting pipe, a connecting ring, and an annular groove. The liquid outlet branch pipe is fixedly connected with a plurality of connecting pipes, and a connecting ring is fixedly installed through the plurality of connecting pipes. The annular seat is provided with an annular groove matching with the connecting ring. The end surface of the annular groove is annular in shape, and an annular groove is provided on both sides thereof, and limiting sliders matching with the annular groove are fixedly installed on both sides of the annular seat; The limit slider is annularly arranged, and the seal is slidably installed on the corresponding annular groove.

[0006] In the above-mentioned automatic dosing device for underground foam drainage gas production, the drug discharging position control component includes a gear ring 1, an explosion-proof servo motor, a rotating shaft, and a driving wheel. The upper surface of the annular seat is fixedly installed with a gear ring 1, the outer side of the air pipe is fixedly installed with an explosion-proof servo motor, the driving end of the explosion-proof servo motor is fixedly installed with a rotating shaft, and the rotating shaft seals and rotates through the air pipe and is fixedly installed with a driving wheel, and the driving wheel is meshed with the gear ring 1; A mounting hole is provided on the air pipe, and a sealed bearing is installed between the rotating shaft and the mounting hole.

[0007] In the above-mentioned automatic dosing device for underground foam drainage and gas production, the self-adjusting component includes a transmission groove, a shaft body 1, a gear 1, a vertical rod, and a gear ring 2. A plurality of transmission grooves are provided on the inner wall of the annular seat, and the transmission grooves correspond to the liquid discharge cylinders one by one. A shaft body 1 is rotatably mounted on each of the transmission grooves, a gear 1 is fixedly mounted on the shaft body 1, a vertical rod is fixedly mounted on each of the connecting pipes, a plurality of the vertical rods are commonly fixedly mounted with a gear ring 2, and the gear 1 is meshed with the gear ring 2; The outer ring diameter of the gear ring 2 is smaller than the inner ring diameter of the annular seat, and a part of the gear is located outside the annular seat.

[0008] In the above-mentioned automatic dosing device for underground foam drainage gas production, the control angle assembly includes a moving chamber, a reciprocating screw, a transmission structure, and a moving seat. The annular seat is provided with a plurality of moving chambers, and the moving chambers are connected with corresponding transmission grooves. A reciprocating screw is rotatably mounted on each of the moving chambers, and a transmission structure is installed between the reciprocating screw and the corresponding shaft body. A moving seat is installed on each of the reciprocating screws through a nut. The transmission structure includes a one-way bearing and a helical gear. A one-way bearing is installed on each shaft body, and a helical gear is installed on the one-way bearing and the reciprocating screw rod, and the two corresponding helical gears are meshed with each other.

[0009] In the above-mentioned automatic dosing device for foam drainage gas production in a well, the swing assembly includes a gear rod, a sliding groove, and a swing structure. A plurality of sliding grooves and a plurality of connecting cavities are provided on the annular seat, and the sliding grooves are connected with the corresponding connecting cavities, and the connecting cavities are connected with the corresponding moving cavities. A short rod is fixedly installed at the lower end of each of the moving seats, and the lower end of the short rod passes through the corresponding connecting cavity and is fixedly installed with a gear rod, and the gear rod is slidably installed on the corresponding sliding groove. A plurality of swing structures are provided on the annular seat, and the swing structures cooperate with the corresponding gear rods.

[0010] In the above-mentioned automatic dosing device for foam drainage and gas production in a well, the swing structure includes a swing groove, a shaft body 2, a gear 2, and a connecting piece. A plurality of swing grooves are provided on the annular seat, and the swing grooves are connected with the corresponding sliding grooves. A shaft body 2 is rotatably mounted on each of the swing grooves, a gear 2 is fixedly mounted on each of the shaft bodies 2, and the gear 2 is meshed with the corresponding gear rod, and a connecting piece is installed between the shaft body 2 and the corresponding liquid outlet cylinder.

[0011] In the above-mentioned automatic dosing device for foam drainage and gas production in a well, the elastic connecting pipe fittings include a hard pipe and a telescopic pipe. A plurality of hard pipes are fixedly mounted on the annular seat, and the upper ends of the hard pipes are connected to the annular grooves. The lower ends of the hard pipes pass through the bottom of the annular seat and are fixedly connected to a telescopic pipe. The lower ends of the telescopic pipes are fixedly connected to the corresponding liquid outlet cylinders.

[0012] In the above-mentioned automatic dosing device for underground foam drainage and gas production, an isolation cover is fixedly installed on the outer side of the gas pipe, and the explosion-proof servo motor is located in the isolation cover.

[0013] In the above-mentioned automatic dosing device for underground foam drainage gas production, the connecting member includes a swing block and a swing rod, each of the second shafts is fixedly mounted with a swing block, and a swing rod is fixedly mounted at the lower end of the swing block, and the lower end of the swing rod is fixedly arranged with the upper end of the corresponding liquid discharge cylinder; The maximum straight-line distance between the swing block and the second axis of the shaft body is smaller than the radius of the swing groove.

[0014] Compared with the prior art, the present invention has the following advantages: 1: By controlling the speed and angle of the medicine outflow, the medicine can quickly and effectively contact the effusion. At the same time, the angle of the medicine outflow has different options of reciprocating swing and any angle within the swing range, which more quickly improves the effective contact between the medicine and the effusion and improves the efficiency of removing the effusion.

[0015] 2: When the rotating shaft rotates, it can drive the liquid discharge cylinder to revolve, so that the medicine enters the effusion at a certain speed. At the same time, the speed of the medicine entering the effusion can be changed by controlling the rotation speed of the rotating shaft, so that the medicine can be better mixed with the effusion at different depths.

[0016] 3: The angle of the liquid discharge cylinder during its revolution can be selected as required. It can be selected to swing back and forth, thereby changing the direction of the medicine outflow and expanding the contact range with the accumulated fluid. It can also stop swinging after swinging to a certain angle, so that the liquid discharge cylinder rotates at a certain angle, thereby controlling the outflow angle of the medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of an automatic dosing device for foam drainage and gas production in a downhole proposed by the present invention; Figure 2 for Figure 1 A structural cross-sectional view of the lower end portion of the middle casing; Figure 3 for Figure 2 A schematic diagram of the structure from another perspective; Figure 4 for Figure 3 A schematic diagram of the structure of part A in the middle; Figure 5 for Figure 2 A schematic diagram of the structure in which the casing and trachea are removed and rotated to a certain angle; Figure 6 for Figure 5 A schematic diagram of the structure of part B in the middle; Figure 7 for Figure 5 A schematic diagram of the structure in which the annular seat is rotated at a certain angle and partially cut; Figure 8 for Figure 7 A schematic diagram of the structure enlargement of the C part; Fig. 9 for Figure 5 Schematic diagram of the structure after the middle connecting ring part is rotated by a certain angle; Fig.10 for Figure 8 A schematic diagram of the structure after the middle liquid discharge cylinder part is rotated to a certain angle; Fig.11 for Figure 7A structural diagram of the middle connecting ring from another perspective; Fig.12 for Fig.11 Schematic diagram of the enlarged structure of part D.

[0019] In the figure: 1, casing; 2, air pipe; 3, medicine storage tank; 4, liquid discharge pump; 5, liquid discharge main pipe; 6, valve; 7, liquid discharge branch pipe; 8, pressure difference control valve; 9, bearing; 10, connecting pipe; 11, connecting ring; 12, annular seat; 13, gear ring 1; 14, explosion-proof servo motor; 15, rotating shaft; 16, driving wheel; 17, transmission groove; 18, shaft body 1; 19, gear 1; 20, vertical rod; 21, gear ring 2; 22, moving chamber; 23, reciprocating screw rod; 24, one-way bearing; 25, bevel gear; 26, moving seat; 27, gear rod; 28, sliding groove; 29, swing groove; 30, shaft body 2; 31, gear 2; 32, swing block; 33, swing rod; 34, liquid discharge cylinder; 35, hard pipe; 36, telescopic pipe; 37, annular groove; 38, connecting chamber; 39, isolation cover DETAILED DESCRIPTION In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", "slightly" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0021] Reference Figure 1-Figure 12, an automatic dosing device for foam drainage gas production in a well, comprising a casing 1, an air pipe 2, and a drug storage tank 3, a liquid pump 4 is installed on the outer side of the drug storage tank 3, and a drug suction pipe is fixedly connected between the drug storage tank 3 and the liquid pump 4, a liquid outlet main pipe 5 is fixedly connected to the liquid pump 4, and a valve 6 is installed on the liquid outlet main pipe 5, a liquid outlet branch pipe 7 is fixedly connected to the liquid outlet main pipe 5, and the lower end of the liquid outlet branch pipe 7 is located in the air pipe 2, and a pressure difference control valve 8 is installed on the liquid outlet branch pipe 7; the above parts are existing With the technology, the pressure differential control valve 8 can be used to automatically add medicine according to the degree of liquid accumulation in the gas well, and the addition of medicine will be automatically stopped after the liquid accumulation is reduced to a certain level; the lower end of the liquid outlet branch pipe 7 is closed and fixedly connected with a one-way liquid inlet pipe. The setting of the one-way liquid inlet pipe allows liquid to accumulate at the bottom of the liquid outlet branch pipe 7, specifically, liquid accumulates below the pressure differential control valve 8, which meets the pressure differential detection requirements of the pressure differential control valve 8. The setting of the one-way liquid inlet pipe prevents the medicine from flowing directly into the accumulated liquid through here.

[0022] An annular seat 12 is rotatably installed on the liquid outlet branch pipe 7 through a connecting component, and the connecting component includes a connecting pipe 10, a connecting ring 11, and an annular groove 37. A plurality of connecting pipes 10 are fixedly connected to the liquid outlet branch pipe 7, and a connecting ring 11 is fixedly installed through the plurality of connecting pipes 10. An annular groove 37 matching with the connecting ring 11 is provided on the annular seat 12; the end face shape of the annular groove 37 is annular, and an annular groove is provided on both sides thereof, and limiting sliders matching with the annular groove are fixedly installed on both sides of the annular seat 12, and the annular groove and the limiting slider are both drawn in the figure, which is a common existing structure for realizing rotation. Further, the limiting slider can be set in an annular shape, and the sealing sliding can be installed on the corresponding annular groove to further improve the sealing matching effect of this part.

[0023] Reference Figure 1-Figure 12 A medicine dispensing position control component is installed between the trachea 2 and the annular seat 12, and the medicine dispensing position control component includes a gear ring 13, an explosion-proof servo motor 14, a rotating shaft 15, and a driving wheel 16. A gear ring 13 is fixedly installed on the upper surface of the annular seat 12, and an explosion-proof servo motor 14 is fixedly installed on the outside of the trachea 2. An isolation cover 39 can be fixedly installed on the outside of the trachea 2, and the explosion-proof servo motor 14 is located in the isolation cover 39, so as to further protect the explosion-proof servo motor 14; a rotating shaft 15 is fixedly installed on the driving end of the explosion-proof servo motor 14, and the rotating shaft 15 is sealed and rotated through the trachea 2 and fixedly installed with a driving wheel 16, and the driving wheel 16 is meshed with the gear ring 13; further, a mounting hole is opened on the trachea 2, and a sealed bearing 9 is installed between the rotating shaft 15 and the mounting hole, so as to better support the rotating shaft 15.

[0024] The selection of explosion-proof servo motor 14 must comply with explosion-proof standards to prevent the occurrence of electrical sparks, heat sources, etc. that may cause gas explosions during operation. Common explosion-proof standards include EX explosion-proof standards, such as EXd (explosion-proof casing) or EXe (enhanced explosion-proof), etc. The specific requirements are selected according to the hazard level of the gas well environment; at the same time, the materials selected for structures such as the driving wheel 16 during preparation must also pay attention to explosion-proof requirements to avoid sparks caused by electrical equipment or mechanical wear. At the same time, corresponding seals can be provided, such as providing an isolation cover (seal) between the driving wheel 16 and the gear ring 13 to further improve safety during use. Some of the above are prior art and will not be elaborated on here; at the same time, the above-mentioned part can also be provided in the accumulated liquid so that the residual accumulated liquid can submerge the part.

[0025] Reference Figure 1-Figure 12 A medicine outlet angle control component is provided between the liquid outlet branch pipe 7 and the annular seat 12 for controlling the angle of medicine outlet. The medicine outlet angle control component includes a self-adjusting component and a control angle component, and the self-adjusting component cooperates with the control angle component to control the operation of the control angle component; the self-adjusting component includes a transmission groove 17, a shaft body 18, a gear 19, a vertical rod 20, and a gear ring 21. A plurality of transmission grooves 17 are provided on the inner wall of the annular seat 12, and the transmission grooves 17 correspond to the liquid outlet cylinder 34 one by one. A shaft body 18 is rotatably installed on each transmission groove 17, and the shaft body A gear 19 is fixedly mounted on a gear 18, a vertical rod 20 is fixedly mounted on each connecting pipe 10, a gear ring 21 is fixedly mounted on the plurality of vertical rods 20, and the gears 19 are all meshed with the gear ring 21; the outer ring diameter of the gear ring 21 is smaller than the inner ring diameter of the annular seat 12, and the gear 19 is partially located on the outer side of the annular seat 12, so that there is a certain distance between the gear ring 21 and the annular seat 12, thereby reducing the obstruction of the overall setting to the flow of natural gas; further, the lower surfaces of the annular seat 12 and the gear ring 21 can be set to be arc-shaped.

[0026] The angle control component includes a moving chamber 22, a reciprocating screw rod 23, a transmission structure, and a moving seat 26. A plurality of moving chambers 22 are provided on the annular seat 12, and the moving chambers 22 are connected to the corresponding transmission grooves 17. A reciprocating screw rod 23 is rotatably installed on each moving chamber 22, and a transmission structure is installed between the reciprocating screw rod 23 and the corresponding shaft body 18. The transmission structure includes a one-way bearing 24 and a bevel gear 25. A one-way bearing 24 is installed on each shaft body 18, and a bevel gear 25 is installed on the one-way bearing 24 and the reciprocating screw rod 23, and the corresponding two bevel gears 25 are meshed with each other. A moving seat 26 is installed on each reciprocating screw rod 23 through a nut.

[0027] Reference Figure 1-Figure 12A plurality of liquid discharge tubes 34 are mounted on the annular seat 12 through a plurality of swinging assemblies. The swinging assemblies correspond to the liquid discharge tubes 34 one by one. The liquid discharge tubes 34 are set with an opening at the lower end. The liquid discharge tubes 34 can be further set to a spiral shape, so that the medicine flows out of the liquid discharge tubes 34 in a spiral trajectory. When the medicine enters the spiral pipe, it flows along the curve direction of the pipe. The shape of this curve causes the flow direction of the medicine to change at a certain angle, resulting in a spiral trajectory of the liquid during the flow process; the control angle assembly cooperates with the control angle assembly, and the swing assembly It includes a gear rod 27, a sliding groove 28, and a swinging structure. A plurality of sliding grooves 28 and a plurality of connecting cavities 38 are provided on the annular seat 12, and the sliding grooves 28 are connected with the corresponding connecting cavities 38, and the connecting cavities 38 are connected with the corresponding movable cavities 22. A short rod is fixedly installed at the lower end of each movable seat 26, and the lower end of the short rod passes through the corresponding connecting cavity 38 and is fixedly installed with a gear rod 27, and the gear rod 27 is slidably installed on the corresponding sliding groove 28. A plurality of swinging structures are provided on the annular seat 12, and the swinging structures cooperate with the corresponding gear rods 27.

[0028] The swing structure comprises a swing groove 29, a shaft body 30, a gear 31, and a connecting piece. A plurality of swing grooves 29 are provided on the annular seat 12, and the swing grooves 29 are connected with the corresponding sliding grooves 28. A shaft body 30 is rotatably installed on each swing groove 29, a gear 31 is fixedly installed on each shaft body 30, and the gear 31 is meshed with the corresponding gear rod 27, and a connecting piece is installed between the shaft body 30 and the corresponding liquid discharge cylinder 34, and the connecting piece comprises a swing block 32 and a swing rod 33. A swing block 32 is fixedly installed on each shaft body 30, and the maximum straight-line distance between the swing block 32 and the axis of the shaft body 30 is less than the radius of the swing groove 29, thereby ensuring that the required swing is met. At the same time, an elastic seal, such as an elastic rubber pad, can be set between the swing groove 29 and the connecting piece. Under the premise of meeting the requirements of use, the part is in a relatively sealed state. A swing rod 33 is fixedly installed on the lower end of the swing block 32, and the lower end of the swing rod 33 is fixedly arranged with the upper end of the corresponding liquid discharge cylinder 34.

[0029] An elastic connecting pipe fitting is installed between the annular seat 12 and the corresponding liquid discharge cylinder 34, and the elastic connecting pipe fitting includes a hard tube 35 and a telescopic tube 36. A plurality of hard tubes 35 are fixedly installed on the annular seat 12, and the upper ends of the hard tubes 35 are connected to the annular groove 37. The lower ends of the hard tubes 35 pass through the bottom of the annular seat 12 and are fixedly connected to a telescopic tube 36. The lower ends of the telescopic tubes 36 are fixedly connected to the corresponding liquid discharge cylinder 34. The setting of the telescopic tube 36 is used to meet the reciprocating swing of the liquid discharge cylinder 34 without affecting the normal flow of medicine.

[0030] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0031] In the present invention, when the differential pressure control valve 8 is opened to add medicine, the medicine is transported to the annular seat 12 through the connecting pipe 10, and then transported to the liquid outlet cylinder 34 through the hard pipe 35 and the telescopic pipe 36, and then flows into the accumulated liquid from the liquid outlet cylinder 34; The explosion-proof servo motor 14 is turned on. The explosion-proof servo motor 14 drives the gear ring 13 to rotate through the rotating shaft 15 and the driving wheel 16. The rotation of the gear ring 13 drives the annular seat 12 to rotate. The rotation of the annular seat 12 drives the liquid discharge cylinder 34 to rotate, so that the medicine enters the effusion at a certain speed. At the same time, the speed of the medicine entering the effusion can be changed by controlling the rotation speed of the rotating shaft 15, so that the medicine can be better mixed with the effusions of different depths. When the gear ring 13 rotates, it will drive the gear 19 installed thereon to run together. The gear 19 will rotate through the cooperation of the gear ring 21. The rotation of the gear 19 will drive the shaft 18 to rotate together. At this time, it is divided into two states. The first state: the one-way bearing 24 drives the reciprocating screw 23 to rotate through the bevel gear 25. The second state: the one-way bearing 24 does not drive the reciprocating screw 23 to rotate. During use, it is swung first and then different inclination angles are selected for use, or vice versa. The specific setting can be made according to the needs before use; When the reciprocating screw 23 rotates, the gear rod 27 is driven to move through the moving seat 26, and the gear rod 27 moves through the gear 2 31 to drive the shaft body 2 30 to swing back and forth, and the shaft body 2 30 swings through the swing block 32 and the swing rod 33 to drive the liquid discharge tube 34 to swing back and forth, thereby changing the direction of the outflow of the medicine and expanding the contact range with the accumulated liquid. When in use, you can choose to swing back and forth all the time, or stop swinging after swinging to a certain angle (at this time the one-way bearing 24 does not drive the reciprocating screw 23 to rotate), so that the liquid discharge tube 34 rotates with the annular seat 12 at a certain inclination; after the addition of medicine is completed, turn off the explosion-proof servo motor 14.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic dosing device for foam drainage and gas production in a well, characterized in that: The invention comprises a casing (1), an air pipe (2), and a medicine storage tank (3), wherein a liquid discharge pump (4) is installed on the outer side of the medicine storage tank (3), and a medicine suction pipe is fixedly connected between the medicine storage tank (3) and the liquid discharge pump (4), a liquid discharge main pipe (5) is fixedly connected to the liquid discharge pump (4), and a valve (6) is installed on the liquid discharge main pipe (5), a liquid discharge branch pipe (7) is fixedly connected to the liquid discharge main pipe (5), and the lower end of the liquid discharge branch pipe (7) is located in the air pipe (2), a pressure difference control valve (8) is installed on the liquid discharge branch pipe (7), and the lower end of the liquid discharge branch pipe (7) is closed and fixedly connected to a one-way liquid inlet pipe; An annular seat (12) is rotatably mounted on the liquid outlet branch pipe (7) via a connecting member, a medicine outlet orientation control member is mounted between the air pipe (2) and the annular seat (12), and a medicine outlet angle control member is disposed between the liquid outlet branch pipe (7) and the annular seat (12) for controlling the angle of medicine outlet, the medicine outlet angle control member comprising a self-adjusting member and a control angle member, and the self-adjusting member cooperates with the control angle member to control the operation of the control angle member; A plurality of liquid discharge cylinders (34) are mounted on the annular seat (12) via a plurality of swinging assemblies, the swinging assemblies correspond to the liquid discharge cylinders (34) one by one, the angle control assemblies cooperate with the angle control assemblies, and elastic connecting pipes are mounted between the annular seat (12) and the corresponding liquid discharge cylinders (34), and the liquid discharge cylinders (34) are arranged with an opening at the lower end.

2. The automatic dosing device for foam drainage and gas production in a downhole according to claim 1 is characterized in that: The connecting member comprises a connecting pipe (10), a connecting ring (11), and an annular groove (37); a plurality of connecting pipes (10) are fixedly connected to the liquid outlet branch pipe (7); a connecting ring (11) is fixedly installed through the plurality of connecting pipes (10); and an annular groove (37) matching with the connecting ring (11) is formed on the annular seat (12); The end surface of the annular groove (37) is annular in shape, and an annular groove is provided on both sides thereof, and limiting sliders matching the annular groove are fixedly mounted on both sides of the annular seat (12); The limit slider is annularly arranged, and the seal is slidably installed on the corresponding annular groove.

3. The automatic dosing device for foam drainage and gas production in a downhole according to claim 1 is characterized in that: The medicine dispensing position control component comprises a gear ring (13), an explosion-proof servo motor (14), a rotating shaft (15), and a driving wheel (16); the gear ring (13) is fixedly mounted on the upper surface of the annular seat (12); the explosion-proof servo motor (14) is fixedly mounted on the outer side of the air pipe (2); the rotating shaft (15) is fixedly mounted on the driving end of the explosion-proof servo motor (14); the rotating shaft (15) is sealed and rotatably penetrates the air pipe (2) and is fixedly mounted with the driving wheel (16); and the driving wheel (16) is meshed with the gear ring (13); The air pipe (2) is provided with a mounting hole, and a sealing bearing (9) is installed between the rotating shaft (15) and the mounting hole.

4. The automatic dosing device for foam drainage and gas production in a downhole according to claim 2 is characterized in that: The self-adjusting component comprises a transmission groove (17), a shaft body (18), a gear (19), a vertical rod (20), and a gear ring (21). The inner wall of the annular seat (12) is provided with a plurality of transmission grooves (17), and the transmission grooves (17) correspond to the liquid discharge cylinders (34) one by one. A shaft body (18) is rotatably mounted on each transmission groove (17), a gear (19) is fixedly mounted on the shaft body (18), a vertical rod (20) is fixedly mounted on each connecting tube (10), a plurality of vertical rods (20) are commonly fixedly mounted with a gear ring (21), and the gears (19) are all meshed with the gear rings (21); The outer ring diameter of the second gear ring (21) is smaller than the inner ring diameter of the annular seat (12), and a portion of the first gear (19) is located outside the annular seat (12).

5. The automatic dosing device for underground foam drainage and gas production according to claim 4 is characterized in that: The angle control assembly comprises a moving cavity (22), a reciprocating screw rod (23), a transmission structure, and a moving seat (26); a plurality of moving cavities (22) are provided on the annular seat (12), and the moving cavities (22) are connected to corresponding transmission grooves (17); a reciprocating screw rod (23) is rotatably mounted on each of the moving cavities (22), and a transmission structure is installed between the reciprocating screw rod (23) and the corresponding shaft body (18); and a moving seat (26) is installed on each of the reciprocating screw rods (23) via a nut; The transmission structure comprises a one-way bearing (24) and a bevel gear (25), wherein each of the shaft bodies (18) is provided with a one-way bearing (24), and each of the one-way bearing (24) and the reciprocating screw rod (23) is provided with a bevel gear (25), and the two corresponding bevel gears (25) are meshed with each other.

6. The automatic dosing device for underground foam drainage and gas production according to claim 5 is characterized in that: The swing assembly comprises a gear rod (27), a sliding groove (28), and a swing structure. The annular seat (12) is provided with a plurality of sliding grooves (28) and a plurality of connecting cavities (38), and the sliding grooves (28) are connected to the corresponding connecting cavities (38), and the connecting cavities (38) are connected to the corresponding moving cavities (22). A short rod is fixedly mounted on the lower end of each moving seat (26), and the lower end of the short rod passes through the corresponding connecting cavity (38) and is fixedly mounted with a gear rod (27), and the gear rod (27) is slidably mounted on the corresponding sliding groove (28). The annular seat (12) is provided with a plurality of sets of swing structures, and the swing structures cooperate with the corresponding gear rods (27).

7. The automatic dosing device for foam drainage and gas production in a downhole according to claim 6, characterized in that: The swing structure comprises a swing groove (29), a second shaft body (30), a second gear (31), and a connecting piece. The annular seat (12) is provided with a plurality of swing grooves (29), and the swing grooves (29) are connected to corresponding sliding grooves (28). A second shaft body (30) is rotatably mounted on each of the swing grooves (29), a second gear (31) is fixedly mounted on each of the second shaft bodies (30), and the second gear (31) is meshed with a corresponding gear rod (27), and a connecting piece is installed between the second shaft body (30) and the corresponding liquid discharge cylinder (34).

8. The automatic dosing device for underground foam drainage and gas production according to claim 7 is characterized in that: The elastic connecting pipe member comprises a hard pipe (35) and a telescopic pipe (36); a plurality of hard pipes (35) are fixedly mounted on the annular seat (12); the upper ends of the hard pipes (35) are connected to the annular groove (37); the lower ends of the hard pipes (35) pass through the lower part of the annular seat (12) and are fixedly connected to a telescopic pipe (36); the lower ends of the telescopic pipes (36) are fixedly connected to corresponding liquid discharge cylinders (34).

9. The automatic dosing device for underground foam drainage and gas production according to claim 3 is characterized in that: An isolation cover (39) is fixedly mounted on the outer side of the air pipe (2), and the explosion-proof servo motor (14) is located inside the isolation cover (39).

10. The automatic dosing device for foam drainage and gas production in a downhole according to claim 7, characterized in that: The connecting member comprises a swing block (32) and a swing rod (33), each of the second shaft bodies (30) is fixedly mounted with a swing block (32), and a swing rod (33) is fixedly mounted at the lower end of the swing block (32), and the lower end of the swing rod (33) is fixedly arranged with the upper end of the corresponding liquid discharge cylinder (34); The maximum straight-line distance between the swing block (32) and the axis of the second shaft body (30) is smaller than the radius of the swing groove (29).

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