Safety lifting high-temperature gas injection valve of offshore oil well

Abstract

The invention relates to the technical field of safety lifting high-temperature gas injection valves, in particular to a safety lifting high-temperature gas injection valve for an offshore oil well, which comprises an outer pipe, a movable pipe, a barrel and a gas outlet assembly, the movable pipe is sleeved outside a gas injection pipe fitting, the bottom of the movable pipe is connected with the barrel, and the gas outlet assembly is connected with the barrel. A water sprinkling ring is connected to the outer side of the barrel in a surrounding mode, a plurality of through holes are formed in the side wall of the barrel, a plurality of air outlet assemblies are installed in the through holes, a lifting assembly is slidably connected to the top of the barrel, a conveying assembly is arranged at the bottom of the barrel, and a cleaning assembly is connected to the conveying assembly. According to the technical scheme, water can be utilized to displace part of oil gas around the valve body, so that the flowability of gas around the valve body is improved, the resistance in the gas injection process is reduced, the gas pressure distribution is more uniform, and the problem of non-uniform gas injection caused by different gas pressures in the gas injection process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of safety lifting high-temperature gas injection valves, and more particularly to a safety lifting high-temperature gas injection valve for offshore oil wells. Background Art

[0002] With the continuous development of oil extraction technology, the requirements for oil production equipment are also getting higher and higher. With the continuous growth of the global demand for oil resources, improving oil production efficiency and reducing oil production costs have become important issues in the oil industry. Problems that may be encountered during high-temperature gas injection in oil wells, such as uneven gas injection and easy blockage of gas injection valves. In order to allow continuous repeated gas injection without lifting the pump during high-temperature gas injection, the operation time is shortened, and cumbersome operations such as lifting the pump are reduced, thereby reducing the number of operations and further reducing the labor intensity of workers. The safety lifting high-temperature gas injection valve came into being.

[0003] In a Chinese patent with the publication number CN113982545A, it discloses a safety lifting high-temperature gas injection valve for oil wells, including an outer tube, a movable tube, and a gas injection pipe component. The movable tube is fixedly sleeved outside the gas injection pipe component, the outer tube is sleeved outside the movable tube, the gas injection pipe component is formed by splicing multiple groups of piston cylinders, a connecting ring is sleeved outside between adjacent two groups of piston cylinders, a piston is provided in each piston cylinder, a push rod is fixedly inserted in the middle of each piston, and a reciprocating motion mechanism acting on the push rod is further provided in the movable tube. A plurality of through holes are provided at the lower end of the side wall of the piston cylinder and are distributed in an annular array. A set of gas injection components are provided in each through hole. Through the reciprocating motion of the reciprocating motion mechanism, pressurization in the piston cylinder is realized, so that gas is discharged from multiple piston cylinders, realizing high-temperature gas injection and uniform gas injection.

[0004] The following defects exist in the above-mentioned related technical solutions: Although uniform gas injection can be achieved to a certain extent, the air pressure in the oil well is uneven due to various factors. Even if the gas ejected briefly is uniform for a moment, it quickly becomes uneven due to the influence of the air pressure around the valve body. In addition, the high-temperature gas injected into the valve body is mostly not pure water in actual situations and contains impurities. After multiple uses, a large amount of impurities will be contained in the valve body and need to be cleaned, otherwise the impurities will block the exhaust holes and affect gas injection. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a safety lifting high-temperature gas injection valve for offshore oil wells to solve the problems existing in the above-mentioned background art.

[0006] The present invention provides the following technical solution: A high-temperature gas injection valve for safely lifting an offshore oil well, comprising an outer pipe, a movable pipe, a cylinder body, and an air outlet assembly. The movable pipe is sleeved outside the gas injection pipe component, the outer pipe is sleeved outside the movable pipe, the movable pipe is driven by an oil cylinder to move linearly on the outer pipe, the bottom of the movable pipe is connected with a cylinder body, a sprinkler ring is connected around the outside of the cylinder body, a water collection box is installed at the bottom of the cylinder body, a plurality of through holes are provided on the side wall of the cylinder body, and a plurality of air outlet assemblies are installed in the through holes. A lifting assembly is slidably connected to the top of the cylinder body, a first motor is connected to the top of the lifting assembly, a conveying assembly is provided at the bottom of the cylinder body, the conveying assembly is connected with a cleaning assembly, and a water conveying assembly is connected to the bottom of the conveying assembly; Further, the lifting assembly includes a threaded rod, the bottom of the threaded rod is fixedly connected with a cover, a bracket is provided above the cover, and the bracket is threadedly connected with the threaded rod.

[0007] Further, the sprinkler ring includes a ring body, a surrounding sprinkler inclined groove is provided inside the ring body, an installation convex block is provided inside the ring body, and the installation convex block is slidably connected with the groove of the cylinder body.

[0008] Further, the air outlet assembly includes a sleeve, a V-shaped through hole is opened at the upper part of the sleeve, a circular through hole is opened at the lower part of the sleeve, a telescopic block is slidably connected to the center of the sleeve, the telescopic block includes a frustum at the upper part, a thin rod is fixedly connected below the frustum, a cylinder is provided at the bottom of the thin rod, the cylinder of the telescopic block has the same shape as the circular through hole of the sleeve, the bottom of the thin rod of the sleeve is connected to a fixing plate by a spring, the bottom of the fixing plate is fixedly connected with the cylinder body, the frustum of the telescopic block is clamped with the V-shaped through hole of the sleeve, and the telescopic block can only pass through from the outside of the sleeve.

[0009] Further, the water conveying assembly includes a box body, a circular groove is provided inside the box body, a water inlet pipe and a water outlet pipe are provided at both ends of the circular groove, two rotors are provided inside the box body, the rotors are meshed with each other, the rotors are tangent to the circular groove inside the box body, the two rotors divide the circular groove of the box body into several small chambers, a second motor is connected to the rotor, the water outlet pipe is connected with a water storage tank, the aperture of the water inlet pipe is larger than that of the water outlet pipe, and the upper end of the water outlet pipe is sealed and an annular groove is opened at the top.

[0010] Further, the water collection box includes a box body, a fixed sandwich is fixedly connected to the side wall of the box body, a movable plate is movably connected inside the fixed sandwich, a cylinder is provided between the side wall of the box body and the movable plate, and the cylinder and the fixed sandwich can seal the lower layer of the box body.

[0011] Further, the conveying assembly includes a bottom plate, symmetric first and second support plates are fixedly connected to the bottom plate, a screw rod is rotatably connected between the first support plates, a guide rod is fixedly connected between the second support plates, a slider is slidably connected to the screw rod and the second support plates, one end of the screw rod is key-connected to a second gear, the second gear is meshed with a second rack, and one end of the second rack is fixedly connected to the cover.

[0012] Further, the cleaning assembly includes a first rack, one end of the first rack is fixedly connected to the slider, a first gear is meshed above the first rack, the first gear is key-connected to a bevel gear, a cleaning gun head is meshed above the bevel gear, and the cleaning gun head is rotatably connected to the water outlet pipe.

[0013] Further, the cleaning gun head is in the shape of a frustum with a round hole opened at the center of the bottom, a plurality of spray holes are arranged above and on the side of the cleaning gun head, an annular bevel gear plate is arranged at the bottom of the spray hole, the annular bevel gear plate is meshed with the bevel gear, and an annular protrusion is arranged at the bottom of the round hole of the cleaning gun head.

[0014] The technical effects and advantages of the present invention: 1. By providing a water sprinkling ring in the present invention, it is beneficial to use water to displace some of the oil and gas around the valve body, thereby improving the fluidity of the gas around the valve body. This helps to reduce the resistance during the gas injection process, make the air pressure distribution more uniform, and avoid the problem of uneven gas injection caused by different air pressures during the gas injection process.

[0015] 2. By providing a cleaning assembly in the present invention, it is beneficial to clean the inside of the cylinder body with clean water, avoiding the problem that impurities brought into the cylinder body by high-temperature gas block the gas injection port and affect the normal gas injection of the valve body, and also avoiding the problem that it will affect the sealing performance of the whole device and cause the failure of the function of the whole valve body. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention after removing the outer tube.

[0018] Figure 3 It is a sectional view of the overall structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the overall structure of the present invention after removing the outer tube and the movable tube.

[0020] Figure 5 It is a schematic diagram of the structure of the water sprinkling ring of the present invention.

[0021] Figure 6Schematic diagram of the air outlet component of the present invention.

[0022] Figure 7 Schematic diagram of the water delivery component of the present invention.

[0023] Figure 8 Schematic diagram of the water collection box structure of the present invention.

[0024] Figure 9 Schematic diagram of the cleaning component and the conveying component of the present invention.

[0025] Figure 10 Cross-sectional view of the cleaning gun head of the present invention.

[0026] Reference numerals are: 1, outer tube; 2, oil cylinder; 3, movable tube; 4, sprinkling ring; 401, ring body; 402, sprinkling chute; 403, mounting convex block; 5, cylinder body; 6, water collection box; 601, box body; 602, fixed interlayer; 603, air cylinder; 604, movable plate; 7, air outlet component; 701, sleeve; 702, telescopic block; 703, spring; 704, fixing plate; 8, first motor; 9, lifting component; 901, threaded rod; 902, cover; 903, bracket; 10, cleaning component; 1001, cleaning gun head; 1002, bevel gear; 1003, first gear; 1004, first rack; 1005, injection hole; 1006, annular bevel gear plate; 1007, annular protrusion; 11, conveying component; 1101, bottom plate; 1102, first support plate; 1103, second support plate; 1104, screw; 1105, guide rod; 1106, slider; 1107, second gear; 1108, second rack; 12, water delivery component; 1201, second motor; 1202, rotor; 1203, box body; 1204, water inlet pipe; 1205, water outlet pipe; 1206, water storage tank. Detailed implementation manners

[0027] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. Additionally, the forms of each structure described in the following implementation manners are merely examples. A safety lifting high-temperature gas injection valve for an offshore oil well involved in the present invention is not limited to the structures described in the following implementation manners. All other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0028] Refer to Figures 1 - 3, the present invention provides a safety lifting high-temperature gas injection valve for offshore oil wells, including an outer pipe 1, a movable pipe 3, a cylinder body 5, and an air outlet assembly 7. The movable pipe 3 is sleeved outside the gas injection pipe component, the outer pipe 1 is sleeved outside the movable pipe 3, and the movable pipe 3 is driven by an oil cylinder 2 to move linearly on the outer pipe 1. The bottom of the movable pipe 3 is connected with a cylinder body 5, a sprinkler ring 4 is connected around the outside of the cylinder body 5, a water collecting box 6 is installed at the bottom of the cylinder body 5, a plurality of through holes are provided on the side wall of the cylinder body 5, and a plurality of air outlet assemblies 7 are installed in the through holes. A lifting assembly 9 is slidably connected to the top of the cylinder body 5, a first motor 8 is connected to the top of the lifting assembly 9, a conveying assembly 11 is provided at the bottom of the cylinder body 5, the conveying assembly 11 is connected with a cleaning assembly 10, and the bottom of the conveying assembly 11 is connected with a water conveying assembly 12; In this embodiment, it should be specifically noted that the air cylinder 603 is connected to an external air inlet pump, and the air inlet pump transports gas into the air cylinder 603.

[0029] The main difference between this embodiment and the prior art is that in this embodiment, an appropriate amount of water is injected to displace some of the oil and gas around the valve body, thereby improving the fluidity of the gas around the valve body. This helps to reduce the resistance during the gas injection process, make the air pressure distribution more uniform, and solve the problem of uneven gas injection caused by uneven air pressure around the valve body. The impurities are removed by the self-cleaning inside the valve body, specifically the sprinkler ring 4 and the cleaning assembly 10; The above structure is the main structure of this embodiment, which solves the problem of poor exhaust caused by impurities blocking the exhaust outlet. The oil cylinder 2, the air cylinder 603, the first motor 8, and the second motor 1201 are existing structures, and the specific structures and connection methods of the oil cylinder 2, the air cylinder 603, the first motor 8, and the second motor 1201 will not be specifically described in this embodiment.

[0030] Refer to Figure 4 , the lifting assembly 9 includes a threaded rod 901. The bottom of the threaded rod 901 is fixedly connected with a cover 902. Above the cover 902, there is a bracket 903, and the bracket 903 is threadedly connected with the threaded rod 901.

[0031] In this embodiment, it should be specifically noted that the first motor 8 starts to rotate forward, driving the threaded rod 901 to start rotating. Under the action of the threaded connection, the threaded rod 901 moves downward, driving the cover 902 fixedly connected to it to move downward along the inner wall of the cylinder body 5. When the first motor 8 rotates in the reverse direction, the threaded rod 901 starts to rotate in the reverse direction. Under the action of the threaded connection, the threaded rod 901 moves upward, driving the cover 902 fixedly connected to it to move upward along the inner wall of the cylinder body 5.

[0032] Refer to Figure 5, the water sprinkling ring 4 includes a ring body 401. An annular water sprinkling chute 402 is provided inside the ring body 401. An installation bump 403 is provided on the inner side of the ring body 401. The installation bump 403 is slidably connected to the groove of the cylinder body 5.

[0033] In this embodiment, it should be specifically noted that: all the water spraying ports of the water sprinkling chute 402 spray clear water downward. Since the water spraying ports of the water sprinkling chute 402 are inclined, under the reaction force of the sprayed water, the water sprinkling ring 4 makes a rotational movement around the center of the valve body. The clear water is continuously sprayed and the water sprinkling ring 4 continuously rotates. In this way, the oil and gas around the valve body are expelled, the fluidity of the gas around the valve body is improved, the resistance during the gas injection process is reduced, and the gas injection becomes more uniform. After a set time, the water spraying ports of the water sprinkling chute 402 stop spraying and the water sprinkling ring 4 stops rotating.

[0034] Refer to Figure 6 , the gas outlet assembly 7 includes a sleeve 701. A V-shaped through hole is opened in the upper part of the sleeve 701, and a circular through hole is opened in the lower part of the sleeve 701. A telescopic block 702 is slidably connected to the center of the sleeve 701. The telescopic block 702 includes a frustum at the upper part. A thin rod is fixedly connected below the frustum. A cylinder is provided at the bottom of the thin rod. The cylinder of the telescopic block 702 has exactly the same shape as the circular through hole of the sleeve 701. The bottom of the thin rod of the sleeve 701 is connected to a fixing plate 704 through a spring 703. The bottom of the fixing plate 704 is fixedly connected to the cylinder body 5. The frustum of the telescopic block 702 is clamped with the V-shaped through hole of the sleeve 701. The telescopic block 702 can only pass through from the outside of the sleeve 701.

[0035] In this embodiment, it should be specifically noted that: when the air pressure inside the cylinder body 5 increases, the air pressure presses the cylinder of the telescopic block 702 to leave the circular through hole of the sleeve 701 and the frustum of the telescopic block 702 will also leave the V-shaped hole of the sleeve 701. The telescopic block 702 pulls the spring 703 to deform. The high-temperature gas flows out through the gap between the thin rod of the telescopic block 702 and the V-shaped hole of the sleeve 701. When the air pressure inside the cylinder body 5 no longer increases, the telescopic block 702 returns to its original position under the pulling force of the spring 703.

[0036] Refer to Figure 7 , the water delivery component 12 includes a box body 1203. A circular groove is provided inside the box body 1203. A water inlet pipe 1204 and a water outlet pipe 1205 are provided at both ends of the circular groove. Two rotors 1202 are provided inside the box body 1203. The rotors 1202 mesh with each other. The rotors 1202 are tangent to the circular groove inside the box body 1203. The two rotors 1202 divide the circular groove of the box body 1203 into several small chambers. A second motor 1201 is connected to the rotor 1202. The water outlet pipe 1205 is connected to a water storage tank 1206. The aperture of the water inlet pipe 1204 is larger than the aperture of the water outlet pipe 1205. The upper end of the water outlet pipe 1205 is sealed and an annular groove is opened at the top.

[0037] In this embodiment, it should be specifically noted that: the second motor 1201 starts, driving the rotor 1202 to rotate. The rotor 1202 drives another rotor 1202 to rotate. When the rotor 1202 is rotating, the box body 1203 is divided into several small spaces. As the rotor 1202 continues to rotate, the volumes of these small spaces will change. When the rotor 1202 rotates to a certain position, the volume of the small space will increase, thereby forming a low-pressure area at the inlet, that is, generating a suction vacuum degree, adsorbing the water on the upper layer of the water collection box 6 into the water storage tank 1206. The water in the water storage tank 1206 is stored as the water used in the cleaning gun head 1001. Moreover, the larger water inlet pipe 1204 can reduce the speed of the medium entering the pump body, thereby reducing the suction pressure loss at the water outlet pipe 1205.

[0038] Refer to Figure 8 , the water collection box 6 includes a box body 601. A fixed sandwich layer 602 is fixedly connected to the side wall of the box body 601. An activity plate 604 is movably connected inside the fixed sandwich layer 602. A cylinder 603 is provided between the side wall of the box body 601 and the activity plate 604. The cylinder 603 and the fixed sandwich layer 602 can seal the lower layer of the box body 601.

[0039] In this embodiment, it should be specifically noted that: when sewage enters the inside of the water collection box 6, impurities will precipitate at the bottom of the box body 601, and the upper layer is clear water. When the water inlet pipe 1204 needs to absorb the clear water inside the box body 601, the cylinder 603 pushes the activity plate 604 until the box body 601 is divided into two layers with impurities in the lower layer and clear water in the upper layer, and the water inlet pipe 1204 will only absorb the clear water inside the box body 601.

[0040] Refer to Figure 9 , the conveying assembly 11 includes a bottom plate 1101. Symmetric first support plates 1102 and second support plates 1103 are fixedly connected to the bottom plate 1101. A screw rod 1104 is rotatably connected between the first support plates 1102. A guide rod 1105 is fixedly connected between the second support plates 1103. A slider 1106 is slidably connected to the screw rod 1104 and the second support plate 1103. A second gear 1107 is key-connected to one end of the screw rod 1104. The second gear 1107 is meshed with a second rack 1108. One end of the second rack 1108 is fixedly connected to the cover 902. The cleaning assembly 10 includes a first rack 1004. One end of the first rack 1004 is fixedly connected to the slider 1106. A first gear 1003 is meshed above the first rack 1004. A bevel gear 1002 is key-connected to the first gear 1003. A cleaning gun head 1001 is meshed above the bevel gear 1002. The cleaning gun head 1001 is rotatably connected to the water outlet pipe 1205.

[0041] In this embodiment, it should be specifically noted that the cover 902 drives the second rack 1108 fixedly connected thereto to descend. The second rack 1108 drives the second gear 1107 meshed therewith to rotate, which drives the screw 1104 key-connected thereto to rotate. The screw 1104 drives the slider 1106 screw-driven and connected thereto to move in the direction close to the cleaning gun head 1001 under the guidance of the guide rod 1105, driving the screw 1104 fixedly connected thereto to move in the direction close to the cleaning gun head 1001. The first rack 1004 drives the first gear 1003 meshed therewith to rotate. The first gear 1003 drives the bevel gear 1002 key-connected thereto to rotate. The bevel gear 1002 drives the cleaning gun head 1001 meshed therewith to rotate. At this time, the water spray holes of the cleaning gun head 1001 are opened and spray towards the top and side walls of the cylinder 5 in a rotating state, so that the top and side walls of the cylinder 5 are cleaned. The sewage after cleaning flows into the bottom of the water collecting box 6 through the water pressure sensitive solenoid valve.

[0042] Refer to Figure 10 , the shape of the cleaning gun head 1001 is a frustum shape with a round hole opened at the center bottom. A plurality of spray holes 1005 are provided above and on the side of the cleaning gun head 1001. An annular bevel gear plate 1006 is provided at the bottom of the spray hole 1005. The annular bevel gear plate 1006 meshes with the bevel gear 1002. An annular protrusion 1007 is provided at the bottom of the round hole of the cleaning gun head 1001.

[0043] In this embodiment, it should be specifically noted that when the bevel gear 1002 rotates, the annular bevel gear plate 1006 also receives a rotational force. The annular protrusion 1007 rotates in cooperation with the water outlet pipe 1205, and the cleaning gun head 1001 rotates, and the spray holes 1005 spray clear water outwards.

[0044] The working principle of the present invention: The main problem solved by this embodiment is: by appropriately injecting water to displace part of the oil and gas around the valve body, thereby improving the fluidity of the gas around the valve body, which helps to reduce the resistance during the gas injection process and make the gas pressure distribution more uniform, solving the problem of uneven gas injection caused by uneven gas pressure around the valve body. By using the self-cleaning inside the valve body, impurities are removed to avoid the problem of poor exhaust caused by impurities blocking the exhaust outlet.

[0045] The specific steps are as follows: First, the piston rod of the movable pipe 3 extends, pushing the movable pipe 3 to move downward. The movable pipe 3 drives the injection pipe component to insert into the oil well. All the water spray nozzles of the water sprinkling chute 402 spray clear water downward. Since the water spray nozzles of the water sprinkling chute 402 are inclined, under the reaction force of the sprayed water, the water sprinkling ring 4 rotates around the center of the valve body. The clear water is continuously sprayed and the water sprinkling ring 4 continuously rotates. In this way, the oil and gas around the valve body are expelled, improving the fluidity of the gas around the valve body, reducing the resistance during the gas injection process, and making the gas injection more uniform. After a set time, the water spray nozzles of the water sprinkling chute 402 stop spraying and the water sprinkling ring 4 stops rotating; The first motor 8 starts to operate, driving the threaded rod 901 to start rotating. Under the action of the threaded connection, the threaded rod 901 moves downward, driving the cover 902 fixedly connected to it to move downward along the inner wall of the cylinder body 5. The cover 902 squeezes the high-temperature gas inside the cylinder body 5, increasing the air pressure inside the cylinder body 5. The gas squeezes the expansion block 702, and the expansion block 702 moves outward. The high-temperature gas will leave the cylinder body 5 through the gap between the sleeve 701 and the thin rod and be sprayed outward until the air pressure inside the cylinder body 5 is uniform. When the first motor 8 stops, the air pressure inside the cylinder body 5 no longer changes. The expansion block 702 returns to its original position under the elastic force of the spring 703, and the inside of the cylinder body 5 is sealed again; When the first motor 8 starts in the reverse direction, the threaded rod 901 starts to rotate in the reverse direction. Under the action of the threaded connection, the threaded rod 901 moves upward, driving the cover 902 fixedly connected to it to move upward along the inner wall of the cylinder body 5. The air pressure inside the cover 902 drops, and the one-way valve connected to the cover 902 allows the high-temperature gas outside the valve body to be injected into the inside of the cylinder body 5; The cleaning gun head 1001 is only opened when the inside of the cylinder body 5 needs to be cleaned, and it will be opened and cleaned during the following actions: when the first motor 8 starts in reverse, the threaded rod 901 starts to rotate in reverse. Under the action of the threaded connection, the threaded rod 901 moves upward, driving the cover 902 fixedly connected to it to move upward along the inner wall of the cylinder body 5. The cover 902 drives the second rack 1108 fixedly connected to it to descend. The second rack 1108 drives the second gear 1107 meshed with it to rotate, driving the screw rod 1104 key-connected to it to rotate. The screw rod 1104 drives the slider 1106 connected to it by screw drive to move towards the cleaning gun head 1001, driving the screw rod 1104 fixedly connected to it to move towards the cleaning gun head 1001. The first rack 1004 drives the first gear 1003 meshed with it to rotate. The first gear 1003 drives the bevel gear 1002 key-connected to it to rotate. The bevel gear 1002 drives the cleaning gun head 1001 meshed with it to rotate. At this time, the water spray holes of the cleaning gun head 1001 are opened, and it sprays towards the top and side walls of the cylinder body 5 in a rotating state. In this way, the top and side walls of the cylinder body 5 are cleaned. The sewage after cleaning flows into the bottom of the water collection box 6 through the water pressure sensitive solenoid valve. After the water has drained, the water pressure sensitive solenoid valve closes. The cleaning water will absorb the heat of the high-temperature gas and reduce the temperature. In this way, the internal air pressure drops, and the high-temperature gas will continuously enter the inside of the cylinder body 5 through the one-way valve, ensuring that the gas temperature inside the cylinder body 5 is at a level where air can be injected outwards; When there is sufficient water inside the water collection box 6, the air cylinder 603 pushes the movable plate 604 to divide the water inside the water collection box 6 into two parts: an upper part of impurities and a lower part of clean water without impurities. The second motor 1201 starts and drives the rotor 1202 to rotate. The rotor 1202 drives another rotor 1202 to rotate. When the rotor 1202 is rotating, the box body 1203 is divided into several small spaces. As the rotor 1202 continues to rotate, the volume of these small spaces will change. When the rotor 1202 rotates to a certain position, the volume of the small space will increase, thereby forming a low-pressure area at the inlet, that is, generating a suction vacuum degree, adsorbing the water on the upper layer of the water collection box 6 into the water storage tank 1206. The water in the water storage tank 1206 is stored as the water used in the cleaning gun head 1001. And the inside of the water collection box 6 contains a solvent that inhibits the growth of microorganisms, and it will not cause difficult-to-clean microbial algae to grow inside the cylinder body 5.

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A safe high-temperature gas injection valve for offshore oil wells, comprising an outer tube (1), a movable tube (3), a cylinder (5) and a gas outlet assembly (7), characterized in that: The movable tube (3) is sleeved on the outside of the gas injection pipe, the outer tube (1) is sleeved on the outside of the movable tube (3), the movable tube (3) is driven by the oil cylinder (2) to perform linear motion on the outer tube (1), the bottom of the movable tube (3) is connected to a cylinder (5), the outer side of the cylinder (5) is connected to a water sprinkling ring (4), the bottom of the cylinder (5) is installed with a water collecting box (6), the side wall of the cylinder (5) is provided with a plurality of through holes, a plurality of gas outlet components (7) are installed in the through holes, the top of the cylinder (5) is slidably connected to a lifting component (9), the top of the lifting component (9) is connected to a first motor (8), the bottom of the cylinder (5) is provided with a conveying component (11), the conveying component (11) is connected to a cleaning component (10), and the bottom of the conveying component (11) is connected to a water delivery component (12).

2. The safe lifting high temperature gas injection valve for offshore oil wells according to claim 1, characterized in that: The lifting assembly (9) comprises a threaded rod (901), the bottom of the threaded rod (901) is fixedly connected to a cover (902), a bracket (903) is provided above the cover (902), and the bracket (903) is threadedly connected to the threaded rod (901).

3. The safe lifting high temperature gas injection valve for offshore oil wells according to claim 1, characterized in that: The watering ring (4) comprises a ring body (401), a surrounding watering chute (402) is provided inside the ring body (401), a mounting protrusion (403) is provided inside the ring body (401), and the mounting protrusion (403) is slidably connected to a groove of the cylinder body (5).

4. The safe lifting high temperature gas injection valve for offshore oil wells according to claim 1 is characterized by: The air outlet assembly (7) comprises a sleeve (701), the upper part of the sleeve (701) is provided with a V-shaped through hole, the lower part of the sleeve (701) is provided with a circular through hole, the center of the sleeve (701) is slidably connected to a telescopic block (702), the telescopic block (702) comprises a round table at the top, a thin rod is fixedly connected to the bottom of the round table, a cylinder is provided at the bottom of the thin rod, the cylinder of the telescopic block (702) and the circular through hole of the sleeve (701) are completely the same in shape, the bottom of the thin rod of the sleeve (701) is connected to a fixed plate (704) via a spring (703), the bottom of the fixed plate (704) is fixedly connected to the cylinder (5), the round table of the telescopic block (702) is clamped with the V-shaped through hole of the sleeve (701), and the telescopic block (702) can only pass from the outside of the sleeve (701).

5. The safe lifting high temperature gas injection valve for offshore oil wells according to claim 1, characterized in that: The water delivery assembly (12) comprises a box body (1203), a circular groove is provided inside the box body (1203), a water inlet pipe (1204) and a water outlet pipe (1205) are provided at both ends of the circular groove, two rotors (1202) are provided inside the box body (1203), the rotors (1202) are meshed with each other, the rotors (1202) are tangent to the circular groove inside the box body (1203), the two rotors (1202) divide the circular groove of the box body (1203) into a plurality of small chambers, the rotors (1202) are connected to a second motor (1201), the water outlet pipe (1205) is connected to a water storage tank (1206), the aperture of the water inlet pipe (1204) is larger than the aperture of the water outlet pipe (1205), the upper end of the water outlet pipe (1205) is sealed and an annular groove is provided at the top.

6. The safe lifting high temperature gas injection valve for offshore oil wells according to claim 1, characterized in that: The water collecting box (6) comprises a box body (601), the side wall of the box body (601) is fixedly connected to a fixed interlayer (602), the interior of the fixed interlayer (602) is movably connected to a movable plate (604), a cylinder (603) is provided between the side wall of the box body (601) and the movable plate (604), and the cylinder (603) and the fixed interlayer (602) can seal the lower layer of the box body (601).

7. The safe lifting high temperature gas injection valve for offshore oil wells according to claim 1, characterized in that: The conveying assembly (11) comprises a bottom plate (1101), to which a symmetrical first support plate (1102) and a second support plate (1103) are fixedly connected, a screw rod (1104) is rotatably connected between the first support plates (1102), a guide rod (1105) is fixedly connected between the second support plates (1103), a slider (1106) is slidably connected between the screw rod (1104) and the second support plate (1103), one end of the screw rod (1104) is key-connected to a second gear (1107), the second gear (1107) is meshingly connected to a second rack (1108), and one end of the second rack (1108) is fixedly connected to the cover (902).

8. The safe lifting high temperature gas injection valve for offshore oil wells according to claim 1, characterized in that: The cleaning assembly (10) comprises a first rack (1004), one end of the first rack (1004) being fixedly connected to a slider (1106), a first gear (1003) being meshingly connected above the first rack (1004), a bevel gear (1002) being keyed to the first gear (1003), a cleaning gun head (1001) being meshingly connected above the bevel gear (1002), and the cleaning gun head (1001) being rotatably connected to a water outlet pipe (1205).

9. A safe lifting high temperature gas injection valve for offshore oil wells according to claim 8, characterized in that: The cleaning gun head (1001) is shaped like a truncated cone with a circular hole at the center bottom. A plurality of spray holes (1005) are provided on the top and side of the cleaning gun head (1001). An annular bevel gear plate (1006) is provided at the bottom of the spray hole (1005). The annular bevel gear plate (1006) meshes with the bevel gear (1002). An annular protrusion (1007) is provided at the bottom of the circular hole of the cleaning gun head (1001).

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