Automatic telescopic device of gas injection well

Abstract

The invention belongs to the technical field of automatic telescopic devices, particularly relates to an automatic telescopic device for a gas injection well, and aims to solve the problems that the existing automatic telescopic device cannot flexibly adjust the height of a wellhead flow according to the height of a Christmas tree after steam injection and does not have a protection function in the use process, so that the service life is relatively short. The system comprises a process compensator. The hair braid adjusting device is installed in the process compensator in a sliding mode, and the process compensator and the hair braid adjusting device are fixedly connected with a first flange and a second flange respectively; the first shell and the second shell are provided with a first mounting hole and a second mounting hole correspondingly, in the using process, the height of the wellhead flow can be flexibly adjusted according to the height of the position of a Christmas tree after steam injection, the protection function is achieved, the service life can be effectively prolonged, the structure is simple, and using is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic telescopic devices, and in particular to an automatic telescopic device for an injection well. Background Art

[0002] The elongation of the downhole string is calculated based on the expansion coefficient of the string material and the temperature of the environment where the string is located. The string will expand axially when heated. Since the tubing is seated in the wellhead through the tubing hanger, if the elongation is large, the elongation of the tubing will inevitably cause the elevation of the wellhead christmas tree, resulting in the inability to install the original process. During the steam injection process, the string expands and elongates under the action of high temperature and high pressure, causing the wellhead to be 2-3 cm higher than before steam injection. It is necessary to carry out hot work to modify the wellhead. The wellhead height adjustment device is a safety device that can adjust the height of the wellhead process. On the one hand, it can quickly connect the wellhead to improve the well opening rate and increase the production. On the other hand, it can eliminate the high-risk operation link of hot work and reduce the safety risk.

[0003] In the prior art, during the use of the automatic telescopic device, it is impossible to flexibly adjust the height of the wellhead process according to the height of the christmas tree after steam injection, and it does not have a protection function, resulting in a relatively low service life. Therefore, we propose an automatic telescopic device for an injection well to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that during the use of the automatic telescopic device, it is impossible to flexibly adjust the height of the wellhead process according to the height of the christmas tree after steam injection, and it does not have a protection function, resulting in a relatively low service life, and to propose an automatic telescopic device for an injection well.

[0005] The automatic telescopic device for an injection well provided by the present application adopts the following technical solutions: An automatic telescopic device for an injection well, comprising: A process compensator; A pony tail adjusting device, the pony tail adjusting device is slidably installed in the process compensator, and a first flange and a second flange are respectively fixedly connected to the process compensator and the pony tail adjusting device; A first housing and a second housing, a first mounting hole and a second mounting hole are respectively opened on the first housing and the second housing, the first flange and the second flange are respectively slidably installed in the first mounting hole and the second mounting hole, two first ventilation holes and two second ventilation holes are respectively opened on the first housing and the second housing, an installation opening is opened on the second housing, a fuel tank is fixedly installed on the top of the first housing, a power supply is fixedly installed on one side of the first housing, and a lubrication mechanism is arranged in the fuel tank for adding lubricating oil to the outside of the pony tail adjusting device; The bracket is fixedly installed on the bottom inner wall of the second housing. A heat dissipation mechanism is arranged on the bracket, and the heat dissipation mechanism is used to dissipate heat from the pigtail adjusting device and the process compensator. An annular plate is rotatably installed on the top inner wall of the first housing, and a rotating mechanism is arranged on the annular plate; A return groove is arranged at the bottom of the first housing. The second housing is slidably installed in the return groove, and a conductive mechanism is arranged in the return groove. The conductive mechanism is used to energize the heat dissipation mechanism.

[0006] Further, the heat dissipation mechanism includes a first rotating shaft and a second rotating shaft. Both the first rotating shaft and the second rotating shaft are rotatably installed on the bracket. A driving motor is fixedly installed at the bottom of the bracket, and the output shaft of the driving motor is fixedly connected to one end of the first rotating shaft. Blades are fixedly connected to the outer sides of the first rotating shaft and the second rotating shaft respectively. A first sprocket and a second sprocket are respectively fixedly installed on the outer sides of the first rotating shaft and the second rotating shaft. The same first chain is engaged with the first sprocket and the second sprocket. When the driving motor is started, the driving motor drives the first rotating shaft to rotate, the first rotating shaft drives the first sprocket to rotate, the first sprocket drives the second sprocket to rotate through the first chain, and the first rotating shaft and the second rotating shaft respectively drive the two blades to rotate, so as to quickly discharge the heat in the first housing and the second housing.

[0007] Further, the rotating mechanism includes a support plate. The support plate is fixedly installed on one side inner wall of the first housing. A third rotating shaft is rotatably installed on the support plate. A rectangular groove is formed at one end of the third rotating shaft. A rectangular rod is slidably installed in the rectangular groove. A gear is fixedly installed at the other end of the third rotating shaft. The gear is engaged with a toothed ring. The toothed ring is fixedly installed on the inner wall of the annular plate. When the rectangular rod rotates, the rectangular rod cooperates with the rectangular groove to drive the third rotating shaft to rotate, the third rotating shaft drives the gear to rotate, the gear drives the toothed ring to rotate, and the toothed ring drives the annular plate to rotate.

[0008] Further, the conductive mechanism includes a first conductive column and a second conductive column. Installation grooves are respectively formed at the top of the second housing and the top inner wall of the return groove. The first conductive column and the second conductive column are respectively slidably installed in the two installation grooves. First springs are fixedly connected to the first conductive column and the second conductive column respectively. One ends of the two first springs are respectively fixedly connected to the inner walls of the two installation grooves. The first conductive column, the power supply, the driving motor and the second conductive column are connected in sequence. When the first conductive column contacts the second conductive column, the driving motor can be automatically started.

[0009] Further, a first sliding hole is formed in the inner wall of the bottom of the fuel tank. The first sliding hole communicates with the annular groove. A sliding rod is slidably installed in the first sliding hole. One end of the sliding rod and one end of the first through pipe are fixedly connected to the same connecting plate. A convex block is fixedly installed on the inner wall of the bottom of the oil receiving groove. The convex block cooperates with the sliding rod. When the annular plate rotates, the annular plate drives the convex block to perform a circular motion. Through the cooperation of the convex block and the sliding rod, when the convex block moves to a certain position, the convex block drives the sliding rod to move vertically upward.

[0010] Further, a U-shaped frame is fixedly installed on the inner wall of the top of the annular groove. A second sliding hole is formed in the U-shaped frame. The sliding rod is slidably installed in the second sliding hole. A second spring is sleeved on the outer side of the sliding rod. Two ends of the second spring are respectively fixedly connected to the inner wall of the bottom of the U-shaped frame and the outer side of the sliding rod. When the convex block and the sliding rod are separated, the second spring drives the sliding rod to reset through the deformation force.

[0011] Further, the lubricating mechanism includes a first through pipe and a second through pipe. A through hole is formed in the bottom of the fuel tank. The through hole communicates with the annular groove. The second through pipe is fixedly installed in the through hole. The first through pipe is slidably installed in the second through pipe. First oil outlet holes and second oil outlet holes are respectively formed in the first through pipe and the second through pipe. The first oil outlet holes and the second oil outlet holes cooperate with each other. When the first oil outlet holes coincide with the second oil outlet holes, the lubricating oil in the fuel tank is discharged into the oil receiving groove through the first oil outlet holes, the second oil outlet holes and the first through pipe.

[0012] Further, an annular groove is formed in the inner wall of the top of the first housing. The annular plate is rotatably installed in the annular groove. A guiding groove is formed in the inner wall of the annular groove. Two symmetrical guide posts are slidably installed in the guiding groove. One ends of the two guide posts are fixedly connected to the outer side of the annular plate. An oil receiving groove is formed in the top of the annular plate. An oil outlet pipe is fixedly communicated with the annular plate. The oil outlet pipe contacts the outer side of the pigtail adjusting device. When the annular plate rotates, the annular plate drives the oil outlet pipe to perform a circular motion. Furthermore, the oil outlet pipe can uniformly discharge the lubricating oil to the outer side of the pigtail adjusting device.

[0013] Further, a rectangular rod is rotatably installed on the bracket. A third sprocket and a fourth sprocket are respectively fixedly installed on the outer sides of the first rotating shaft and the rectangular rod. The same second chain is engaged with the third sprocket and the fourth sprocket. When the first rotating shaft rotates, the third sprocket can drive the fourth sprocket to rotate through the second chain, and the fourth sprocket drives the rectangular rod to rotate.

[0014] Further, a fixing ring is fixedly installed at the bottom of the second housing. Two fastening bolts are threadedly installed on the fixing ring. Two threaded grooves are formed in the first flange. The two fastening bolts respectively cooperate with the two threaded grooves. When the two fastening bolts are rotated, the two fastening bolts can fix or release the fixation of the first flange.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the steam injection of this solution is completed, the first flange is installed above the master valve of the Christmas tree through the installation port, and the pigtail adjusting device is installed between the plumb bob and the hanger to prevent the hanger from colliding with the wellhead. When the pipe string expands axially due to heat, the flow compensator can automatically adjust the appropriate distance according to the elevation distance of the wellhead. 2. When the second housing moves vertically upward to a certain position in this solution, the first conductive column contacts the second conductive column, and then the drive motor can be automatically turned on. The drive motor drives the first rotating shaft to rotate, the first rotating shaft drives the first sprocket to rotate, the first sprocket drives the second sprocket to rotate through the first chain, and the second sprocket drives the second rotating shaft to rotate. Then, the first rotating shaft and the second rotating shaft respectively drive the two fan blades to rotate, and the suction generated by the rotation of the two fan blades can quickly discharge the heat of the flow compensator and the pigtail adjusting device, avoiding the influence of too high temperature on the service life. 3. When the annular plate rotates in this solution, the annular plate drives the convex block to make a circular motion. When the convex block moves to a certain position, the convex block squeezes the sliding rod to move vertically upward, the sliding rod drives the connecting plate to move vertically upward, and the connecting plate drives the first through pipe to move vertically upward. When the first through pipe moves to a certain position, the first oil outlet hole coincides with the second oil outlet hole. When the convex block and the sliding rod move away from each other, the second spring drives the sliding rod to reset through the deformation force, and then the connecting plate drives the first through pipe to reset. Then, the lubricating oil in the fuel tank is intermittently discharged into the oil receiving groove through the first oil outlet hole, the second oil outlet hole and the second through pipe, and the lubricating oil in the oil receiving groove is discharged to the outside of the pigtail adjusting device through the oil outlet pipe for lubrication.

[0016] The present invention can flexibly adjust the height of the wellhead flow process according to the height of the Christmas tree after steam injection during use, and has a protection function, which can effectively improve the service life, with a simple structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the automatic telescopic device for gas injection wells proposed by the present invention; Figure 2 is a structural schematic diagram of the flow compensator and the pigtail adjusting device of the automatic telescopic device for gas injection wells proposed by the present invention; Figure 3 is a sectional structural schematic diagram of the telescopic mechanism of the automatic telescopic device for gas injection wells proposed by the present invention; Figure 4 is a structural schematic diagram of the cooperation between the first housing and the second housing of the automatic telescopic device for gas injection wells proposed by the present invention; Figure 5 is a structural schematic diagram of the interior of the second housing of the automatic telescopic device for gas injection wells proposed by the present invention; Figure 6Schematic diagram of the internal structure of the first housing of the gas injection well automatic telescopic device proposed by the present invention; Figure 7 Schematic diagram of the structure of the gear and the gear ring of the gas injection well automatic telescopic device proposed by the present invention; Figure 8 Schematic diagram of the internal structure of the fuel tank of the gas injection well automatic telescopic device proposed by the present invention; Figure 9 Schematic diagram of the structure of the reciprocating mechanism of the gas injection well automatic telescopic device proposed by the present invention; Figure 10 Schematic diagram of the structure of the rectangular rod and the transmission shaft of the gas injection well automatic telescopic device proposed by the present invention; Figure 11 For the gas injection well automatic telescopic device proposed by the present invention Figure 5 Enlarged schematic diagram of part A; Figure 12 For the gas injection well automatic telescopic device proposed by the present invention Figure 5 Enlarged schematic diagram of part B; Figure 13 For the gas injection well automatic telescopic device proposed by the present invention Figure 5 Enlarged schematic diagram of part C; Figure 14 For the gas injection well automatic telescopic device proposed by the present invention Figure 6 Enlarged schematic diagram of part D; Figure 15 For the gas injection well automatic telescopic device proposed by the present invention Figure 6 Enlarged schematic diagram of part E.

[0018] Reference Signs: 1, process compensator; 2, hair braid adjusting device; 3, second flange; 4, first flange; 5, first housing; 6, second housing; 7, mounting opening; 8, fixing ring; 9, fastening bolt; 10, threaded groove; 11, power supply; 12, fuel tank; 13, second mounting hole; 14, first mounting hole; 15, second ventilation hole; 16, first ventilation hole; 17, return groove; 18, bracket; 19, mounting groove; 20, first conductive post; 21, second conductive post; 22, first spring; 23, drive motor; 24, first rotating shaft; 25, second rotating shaft; 26, first sprocket; 27, first chain; 28, second sprocket; 29, third sprocket; 30, second chain; 31, fourth sprocket; 32, rectangular rod; 33, support plate; 34, third rotating shaft; 35, gear; 36, toothed ring; 37, annular plate; 38, guide post; 39, oil receiving groove; 40, bump; 41, oil outlet pipe; 42, slide bar; 43, connecting plate; 44, U-shaped frame; 45, second spring; 46, first through pipe; 47, second through pipe; 48, first oil outlet hole; 49, second oil outlet hole; 50, second sliding hole; 51, fan blade. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1

[0020] Refer to Figures 1 - 15 , the automatic telescopic device for gas injection wells includes: Process compensator 1, the basic height of the process compensator 1 is 17 cm, and the maximum adjustment distance is 5 cm; Hair braid adjusting device 2, the hair braid adjusting device 2 is slidably installed in the process compensator 1. The process compensator 1 and the hair braid adjusting device 2 are respectively fixedly connected with a first flange 4 and a second flange 3. The maximum adjustment distance of the hair braid adjusting device 2 is 13 cm. It is installed between the plumb bob and the hanger to prevent the hanger from colliding with the wellhead; First housing 5 and second housing 6, the first housing 5 and the second housing 6 are respectively provided with a first mounting hole 14 and a second mounting hole 13. The first flange 4 and the second flange 3 are respectively slidably installed in the first mounting hole 14 and the second mounting hole 13. The first housing 5 and the second housing 6 are respectively provided with two first ventilation holes 16 and two second ventilation holes 15. The second housing 6 is provided with a mounting opening 7. The top of the first housing 5 is fixedly installed with a fuel tank 12. One side of the first housing 5 is fixedly installed with a power supply 11. A lubrication mechanism is arranged in the fuel tank 12, and the lubrication mechanism is used to add lubricating oil to the outside of the hair braid adjusting device 2; The support 18 is fixedly installed on the bottom inner wall of the second housing 6. A heat dissipation mechanism is provided on the support 18, and the heat dissipation mechanism is used to dissipate heat from the pigtail adjusting device 2 and the process compensator 1. An annular plate 37 is rotatably installed on the top inner wall of the first housing 5, and a rotating mechanism is provided on the annular plate 37; The return groove 17 is provided at the bottom of the first housing 5. The second housing 6 is slidably installed in the return groove 17. A conductive mechanism is provided in the return groove 17, and the conductive mechanism is used to energize the heat dissipation mechanism. A fixing ring 8 is fixedly installed at the bottom of the second housing 6. Two fastening bolts 9 are threadedly installed on the fixing ring 8. Two threaded grooves 10 are formed on the first flange 4. The two fastening bolts 9 are respectively matched with the two threaded grooves 10. When the two fastening bolts 9 are rotated, the two fastening bolts 9 can fix or release the fixation of the first flange 4.

[0021] Refer to Figure 5 、 Figure 12 and Figure 13 As shown in, the heat dissipation mechanism includes a first rotating shaft 24 and a second rotating shaft 25. Both the first rotating shaft 24 and the second rotating shaft 25 are rotatably installed on the support 18. A driving motor 23 is fixedly installed at the bottom of the support 18. The output shaft of the driving motor 23 is fixedly connected to one end of the first rotating shaft 24. Blades 51 are fixedly connected to the outer sides of both the first rotating shaft 24 and the second rotating shaft 25. A first sprocket 26 and a second sprocket 28 are respectively fixedly installed on the outer sides of the first rotating shaft 24 and the second rotating shaft 25. The same first chain 27 is engaged with the first sprocket 26 and the second sprocket 28. When the driving motor 23 is turned on, the driving motor 23 drives the first rotating shaft 24 to rotate. The first rotating shaft 24 drives the first sprocket 26 to rotate. The first sprocket 26 drives the second sprocket 28 to rotate through the first chain 27. The first rotating shaft 24 and the second rotating shaft 25 respectively drive the two blades 51 to rotate, so as to quickly discharge the heat in the first housing 5 and the second housing 6. A rectangular rod 32 is rotatably installed on the support 18. A third sprocket 29 and a fourth sprocket 31 are respectively fixedly installed on the outer sides of the first rotating shaft 24 and the outer side of the rectangular rod 32. The same second chain 30 is engaged with the third sprocket 29 and the fourth sprocket 31. When the first rotating shaft 24 rotates, the third sprocket 29 can drive the fourth sprocket 31 to rotate through the second chain 30, and the fourth sprocket 31 drives the rectangular rod 32 to rotate.

[0022] Refer to Figure 6 、 Figure 7 、 Figure 14 and Figure 15, the rotating mechanism includes a support plate 33. The support plate 33 is fixedly installed on the inner wall of one side of the first housing 5. A third rotating shaft 34 is rotatably installed on the support plate 33. A rectangular groove is provided at one end of the third rotating shaft 34. A rectangular rod 32 is slidably installed in the rectangular groove. A gear 35 is fixedly installed at the other end of the third rotating shaft 34. The gear 35 meshes with a toothed ring 36. The toothed ring 36 is fixedly installed on the inner wall of an annular plate 37. When the rectangular rod 32 rotates, the rectangular rod 32 cooperates with the rectangular groove to drive the third rotating shaft 34 to rotate. The third rotating shaft 34 drives the gear 35 to rotate. The gear 35 drives the toothed ring 36 to rotate. The toothed ring 36 drives the annular plate 37 to rotate. An annular groove is provided on the top inner wall of the first housing 5. The annular plate 37 is rotatably installed in the annular groove. Guide grooves are provided on the inner wall of the annular groove. Two symmetrically arranged guide posts 38 are slidably installed in the guide grooves. One ends of the two guide posts 38 are fixedly connected to the outer side of the annular plate 37. An oil receiving groove 39 is provided on the top of the annular plate 37. An oil outlet pipe 41 is fixedly communicated with the annular plate 37. The oil outlet pipe 41 contacts the outer side of the pigtail adjusting device 2. When the annular plate 37 rotates, the annular plate 37 drives the oil outlet pipe 41 to perform a circular motion. Furthermore, the oil outlet pipe 41 can evenly discharge lubricating oil to the outer side of the pigtail adjusting device 2.

[0023] Refer to Figure 6 and Figure 11 , the conductive mechanism includes a first conductive column 20 and a second conductive column 21. Installation grooves 19 are provided on the top of the second housing 6 and the top inner wall of the rectangular groove 17. The first conductive column 20 and the second conductive column 21 are respectively slidably installed in the two installation grooves 19. First springs 22 are fixedly connected to the first conductive column 20 and the second conductive column 21. One ends of the two first springs 22 are respectively fixedly connected to the inner walls of the two installation grooves 19. The first conductive column 20, the power supply 11, the drive motor 23, and the second conductive column 21 are connected in sequence. When the first conductive column 20 contacts the second conductive column 21, the drive motor 23 can be automatically turned on.

[0024] Refer to Figure 8 and Figure 9, the lubricating mechanism includes a first through pipe 46 and a second through pipe 47. A through hole is opened at the bottom of the fuel tank 12, and the through hole communicates with the annular groove. The second through pipe 47 is fixedly installed in the through hole, and the first through pipe 46 is slidably installed in the second through pipe 47. A first oil outlet hole 48 and a second oil outlet hole 49 are respectively opened on the first through pipe 46 and the second through pipe 47. The first oil outlet hole 48 and the second oil outlet hole 49 cooperate with each other. When the first oil outlet hole 48 coincides with the second oil outlet hole 49, the lubricating oil in the fuel tank 12 is discharged into the oil receiving groove 39 through the first oil outlet hole 48, the second oil outlet hole 49 and the first through pipe 46. A first sliding hole is opened on the inner wall of the bottom of the fuel tank 12, and the first sliding hole communicates with the annular groove. A sliding rod 42 is slidably installed in the first sliding hole. One end of the sliding rod 42 and one end of the first through pipe 46 are fixedly connected to the same connecting plate 43. A convex block 40 is fixedly installed on the inner wall of the bottom of the oil receiving groove 39, and the convex block 40 cooperates with the sliding rod 42. When the annular plate 37 rotates, the annular plate 37 drives the convex block 40 to do a circular motion. Through the setting of the cooperation between the convex block 40 and the sliding rod 42, when the convex block 40 moves to a certain position, the convex block 40 drives the sliding rod 42 to move vertically upward. A U-shaped frame 44 is fixedly installed on the inner wall of the top of the annular groove. A second sliding hole 50 is opened on the U-shaped frame 44, and the sliding rod 42 is slidably installed in the second sliding hole 50. A second spring 45 is sleeved on the outer side of the sliding rod 42. Two ends of the second spring 45 are respectively fixedly connected to the inner wall of the bottom of the U-shaped frame 44 and the outer side of the sliding rod 42. When the convex block 40 and the sliding rod 42 are away from each other, the second spring 45 drives the sliding rod 42 to reset through the deformation force.

[0025] The implementation principle in this embodiment is as follows: During use, after steam injection is completed, the first flange 4 is installed above the master valve of the Christmas tree through the installation port 7. The pigtail adjusting device 2 is installed between the plumb bob and the hanger, preventing the hanger from colliding with the wellhead. When the tubing string expands axially due to heat, the flow compensator 1 can automatically adjust to an appropriate distance according to the elevation distance of the wellhead. At the same time, the first flange 4 drives the second housing 6 to move vertically upward, and the second housing 6 drives the first conductive column 20 to move vertically upward. When the second housing 6 moves vertically upward to a certain position, the first conductive column 20 contacts the second conductive column 21, and then the drive motor 23 can be automatically turned on. The drive motor 23 drives the first rotating shaft 24 to rotate, the first rotating shaft 24 drives the first sprocket 26 to rotate, the first sprocket 26 drives the second sprocket 28 to rotate through the first chain 27, and the second sprocket 28 drives the second rotating shaft 25 to rotate. Thus, the first rotating shaft 24 and the second rotating shaft 25 respectively drive the two fan blades 51 to rotate. The suction force generated by the rotation of the two fan blades 51 can quickly discharge the heat of the flow compensator 1 and the pigtail adjusting device 2, preventing their temperatures from being too high and affecting their service life. At the same time, the first rotating shaft 24 drives the third sprocket 29 to rotate, the third sprocket 29 drives the fourth sprocket 31 to rotate through the second chain 30, the fourth sprocket 31 drives the rectangular rod 32 to rotate, the rectangular rod 32 cooperates with the rectangular groove to drive the third rotating shaft 34 to rotate, the third rotating shaft 34 drives the gear 35 to rotate, the gear 35 drives the toothed ring 36 to rotate, the toothed ring 36 drives the annular plate 37 to rotate, and the annular plate 37 drives the convex block 40 to perform a circular motion. When the convex block 40 moves to a certain position, the convex block 40 squeezes the slide rod 42 to move vertically upward, the slide rod 42 drives the connecting plate 43 to move vertically upward, and the connecting plate 43 drives the first through pipe 46 to move vertically upward. When the first through pipe 46 moves to a certain position, the first oil outlet 48 coincides with the second oil outlet 49. When the convex block 40 moves away from the slide rod 42, the second spring 45 drives the slide rod 42 to reset through the deformation force, and then the connecting plate 43 drives the first through pipe 46 to reset. Thus, the lubricating oil in the fuel tank 12 is intermittently discharged into the oil receiving groove 39 through the first oil outlet 48, the second oil outlet 49, and the second through pipe 47. The lubricating oil in the oil receiving groove 39 is discharged to the outside of the pigtail adjusting device 2 through the oil outlet pipe 41. At the same time, the annular plate 37 drives the oil outlet pipe 41 to perform a circular motion, and thus the lubricating oil can be evenly discharged onto the surface of the pigtail adjusting device 2 for lubrication, further improving its service life. Embodiment 2

[0026] The difference between this embodiment and Embodiment 1 is that dust-proof nets are fixedly installed in both of the two first ventilation holes 16 and the two second ventilation holes 15. Through the setting of the dust-proof nets, external dust can be intercepted to avoid abrasion.

[0027] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention any equivalent replacement or change made according to the technical solution and inventive concept of the present invention.

Claims

1. An automatic telescopic device for an air injection well, characterized in that: Comprising: A process compensator (1); A hair braid adjusting device (2), the hair braid adjusting device (2) is slidably installed in the process compensator (1), and a first flange (4) and a second flange (3) are respectively fixedly connected to the process compensator (1) and the hair braid adjusting device (2); A first housing (5) and a second housing (6), a first mounting hole (14) and a second mounting hole (13) are respectively formed in the first housing (5) and the second housing (6), the first flange (4) and the second flange (3) are respectively slidably installed in the first mounting hole (14) and the second mounting hole (13), two first ventilation holes (16) and two second ventilation holes (15) are respectively formed in the first housing (5) and the second housing (6), an installation opening (7) is formed in the second housing (6), an oil tank (12) is fixedly installed at the top of the first housing (5), a power supply (11) is fixedly installed on one side of the first housing (5), a lubricating mechanism is arranged in the oil tank (12), and the lubricating mechanism is used for adding lubricating oil to the outside of the hair braid adjusting device (2); A bracket (18), the bracket (18) is fixedly installed on the bottom inner wall of the second housing (6), a heat dissipation mechanism is arranged on the bracket (18), the heat dissipation mechanism is used for dissipating heat from the hair braid adjusting device (2) and the process compensator (1), an annular plate (37) is rotatably installed on the top inner wall of the first housing (5), and a rotating mechanism is arranged on the annular plate (37); A return groove (17), the return groove (17) is arranged at the bottom of the first housing (5), the second housing (6) is slidably installed in the return groove (17), and a conductive mechanism is arranged in the return groove (17), and the conductive mechanism is used for energizing the heat dissipation mechanism.

2. The automatic telescopic device for gas injection wells according to claim 1, characterized in that: A fixing ring (8) is fixedly installed at the bottom of the second housing (6), two fastening bolts (9) are threadedly installed on the fixing ring (8), two threaded grooves (10) are formed in the first flange (4), and the two fastening bolts (9) are respectively matched with the two threaded grooves (10).

3. The automatic telescopic device for gas injection wells according to claim 2, characterized in that: The heat dissipation mechanism includes a first rotating shaft (24) and a second rotating shaft (25), the first rotating shaft (24) and the second rotating shaft (25) are both rotatably installed on the bracket (18), a driving motor (23) is fixedly installed at the bottom of the bracket (18), an output shaft of the driving motor (23) is fixedly connected to one end of the first rotating shaft (24), fan blades (51) are respectively fixedly connected to the outer sides of the first rotating shaft (24) and the second rotating shaft (25), a first sprocket (26) and a second sprocket (28) are respectively fixedly installed on the outer sides of the first rotating shaft (24) and the second rotating shaft (25), and a first chain (27) is meshed on the first sprocket (26) and the second sprocket (28).

4. The automatic telescopic device for an air injection well according to claim 3, wherein: A rectangular rod (32) is rotatably installed on the bracket (18), a third sprocket (29) and a fourth sprocket (31) are respectively fixedly installed on the outer sides of the first rotating shaft (24) and the rectangular rod (32), and a second chain (30) is meshed on the third sprocket (29) and the fourth sprocket (31).

5. The automatic telescopic device for an air injection well according to claim 4, characterized in that: The rotating mechanism includes a support plate (33) fixedly installed on the inner wall of one side of the first housing (5). A third rotating shaft (34) is rotatably installed on the support plate (33). A rectangular groove is formed at one end of the third rotating shaft (34), and a rectangular rod (32) is slidably installed in the rectangular groove. A gear (35) is fixedly installed at the other end of the third rotating shaft (34), and the gear (35) meshes with a toothed ring (36) which is fixedly installed on the inner wall of an annular plate (37).

6. The automatic telescopic device for an air injection well according to claim 5, wherein: An annular groove is formed in the top inner wall of the first housing (5), and the annular plate (37) is rotatably installed in the annular groove. Guide grooves are formed in the inner wall of the annular groove, and two symmetric guide posts (38) are slidably installed in the guide grooves. One ends of the two guide posts (38) are fixedly connected to the outer side of the annular plate (37). An oil receiving groove (39) is formed in the top of the annular plate (37), and an oil outlet pipe (41) is fixedly communicated with the annular plate (37), and the oil outlet pipe (41) contacts the outer side of the pigtail adjusting device (2).

7. The automatic telescopic device for gas injection wells according to claim 6, characterized in that: The conductive mechanism includes a first conductive column (20) and a second conductive column (21). Installation grooves (19) are formed in the top of the second housing (6) and the top inner wall of the return groove (17) respectively. The first conductive column (20) and the second conductive column (21) are slidably installed in the two installation grooves (19) respectively. First springs (22) are fixedly connected to the first conductive column (20) and the second conductive column (21). One ends of the two first springs (22) are fixedly connected to the inner walls of the two installation grooves (19) respectively. The first conductive column (20), the power supply (11), the drive motor (23) and the second conductive column (21) are connected in sequence.

8. The automatic telescopic device for an air injection well according to claim 7, characterized in that: The lubricating mechanism includes a first through pipe (46) and a second through pipe (47). A through hole is formed in the bottom of the fuel tank (12), and the through hole communicates with the annular groove. The second through pipe (47) is fixedly installed in the through hole. The first through pipe (46) is slidably installed in the second through pipe (47). First oil outlet holes (48) and second oil outlet holes (49) are formed in the first through pipe (46) and the second through pipe (47) respectively, and the first oil outlet holes (48) and the second oil outlet holes (49) cooperate with each other.

9. The automatic telescopic device for gas injection wells according to claim 8, characterized in that: A first sliding hole is formed in the bottom inner wall of the fuel tank (12), and the first sliding hole communicates with the annular groove. A sliding rod (42) is slidably installed in the first sliding hole. One end of the sliding rod (42) and one end of the first through pipe (46) are fixedly connected to the same connecting plate (43). A convex block (40) is fixedly installed on the bottom inner wall of the oil receiving groove (39), and the convex block (40) cooperates with the sliding rod (42).

10. The automatic telescopic device for an air injection well according to claim 9, characterized in that: A U-shaped frame (44) is fixedly installed on the top inner wall of the annular groove. A second sliding hole (50) is formed in the U-shaped frame (44), and the sliding rod (42) is slidably installed in the second sliding hole (50). A second spring (45) is sleeved on the outer side of the sliding rod (42), and two ends of the second spring (45) are fixedly connected to the bottom inner wall of the U-shaped frame (44) and the outer side of the sliding rod (42) respectively.

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