Ocean platform single-cylinder multi-pipe wellhead Christmas tree device

Abstract

The invention discloses an ocean platform single-cylinder multi-pipe wellhead Christmas tree device, and belongs to the technical field of ocean platform wellhead oil extraction equipment, the ocean platform single-cylinder multi-pipe wellhead Christmas tree device comprises a Christmas tree, an extraction mechanism, an infusion mechanism, a pushing mechanism and a collection frame, the extraction mechanism comprises an oil extraction pipe, a middle bin, a motor and an extraction assembly, the oil extraction pipe is connected with the Christmas tree and the middle bin, and the motor is connected with the extraction assembly; the motor is installed on the middle bin and connected with the extraction assembly, and the extraction assembly is installed on the middle bin. The infusion mechanism comprises a fixing sleeve, a collecting tank, a switch assembly and a storage assembly, the fixing sleeve is connected with the middle bin and the switch assembly, the switch assembly is connected with the extraction assembly, the switch assembly is installed on the side face of the middle bin and connected with the fixing sleeve, and the fixing sleeve is connected with the storage assembly. The collecting frame is installed below the storage assembly, the shifting assembly is connected with the switch assembly, the one-way control assembly is connected with the shifting assembly, and the shifting assembly is connected with the collecting frame.

Description

Technical Field

[0001] The invention relates to the technical field of offshore platform wellhead oil production equipment, and in particular discloses an offshore platform single-tube multi-tube wellhead Christmas tree device. Background Art

[0002] With the continuous growth of global energy demand, the exploration and exploitation of offshore oil and natural gas has gradually become an important source of energy supply. As the core facility of offshore oil and gas exploitation, offshore platforms carry complex drilling, production and processing tasks. Among them, the Christmas-Tree device is a key device connecting the wellhead and the ground facilities, responsible for controlling the outflow of oil and gas, monitoring downhole pressure, and performing safety protection and other important functions. In the traditional design of offshore wellhead Christmas trees, a single wellhead structure is usually used to handle oil and gas flows. However, with the advancement of technology and the diversification of oilfield development needs, single-tube multi-tube wellhead Christmas-Tree devices have gradually attracted attention.

[0003] In summary, the innovation and application of the single-tube multi-tube wellhead Christmas tree device on offshore platforms marks the continuous progress of offshore oil and gas production technology. It not only improves the efficiency of resource development, but also provides strong technical support for promoting the sustainable development of the offshore oil and gas industry.

[0004] The patent with publication number CN116146136A discloses a single-barrel multi-well wellhead device installation method and a single-barrel multi-well wellhead device. The technical solution of the patent is: it includes a lower base assembly, the lower base assembly is installed on a supporting casing, a water-blocking casing is installed on the supporting casing, and the water-blocking casing is installed inside the lower base assembly. However, the patent cannot realize the collection of oil. Therefore, in view of this defect, an offshore platform single-barrel multi-tube wellhead oil production tree device was invented. Summary of the invention

[0005] In view of the above technical problems, the technical solution adopted by the present invention is: a single-tube multi-tube wellhead oil tree device for an offshore platform, including an oil tree, a collection frame, an extraction mechanism, an infusion mechanism and a pushing mechanism, the extraction mechanism including an oil pipe, an intermediate chamber, a motor and an extraction assembly, the oil pipe is connected to the oil tree, the oil pipe is connected to the intermediate chamber, the motor is installed on the intermediate chamber, the motor is connected to the extraction assembly, and the extraction assembly is installed on the intermediate chamber.

[0006] The infusion mechanism includes a fixed sleeve, a collecting tank, a switch assembly and a storage assembly. The fixed sleeve is connected to and communicated with the intermediate bin, the fixed sleeve is connected to the switch assembly, the switch assembly is connected to the extraction assembly, the switch assembly is installed on the side of the intermediate bin, the switch assembly is connected to the fixed sleeve, the fixed sleeve is connected to the storage assembly, the collecting frame is installed below the storage assembly, and the storage assembly is installed on the side of the intermediate bin.

[0007] The pushing mechanism comprises a toggle lever, a toggle assembly and a one-way control assembly, the toggle lever is connected to the toggle assembly, the toggle assembly is connected to the switch assembly, the one-way control assembly is connected to the toggle assembly, and the toggle assembly is connected to the collection frame.

[0008] Furthermore, an oil inlet hole is provided on the side of the intermediate warehouse, the number of oil production pipes is consistent with the number of oil inlet holes, and each oil inlet hole is connected to an oil production pipe on the inner wall thereof. The extraction component includes a fixed plate, a motor is fixedly mounted on the fixed plate, a turntable is fixedly mounted on the output end of the motor, a first connecting shaft is fixedly mounted on the side of the turntable, a first connecting rod is rotatably mounted on the outer surface of the first connecting shaft, a second connecting rod is rotatably mounted on the end of the first connecting rod away from the first connecting shaft, a second connecting rod is rotatably mounted on the end of the second connecting rod away from the first connecting rod, a sleeve is fixedly mounted on the side of the second connecting rod, a piston shaft is fixedly mounted on the inner wall of the sleeve, a piston is fixedly mounted on the end of the piston shaft away from the sleeve, and the piston shaft is slidably mounted in the intermediate warehouse and the sliding direction is vertical.

[0009] Furthermore, a vertical groove is provided on the side of the fixed plate, and the switch assembly includes a movable circle, which is slidably installed on the inner wall of the fixed sleeve, a third connecting shaft is fixedly installed on the outer surface of the movable circle, a fourth connecting rod is fixedly installed on the outer surface of the third connecting shaft, a connecting block is fixedly installed on the lower side of the fourth connecting rod, the third connecting rod is rotatably installed on the connecting block, a slider is rotatably installed on the end of the third connecting rod away from the connecting block, the slider is slidably installed on the side of the intermediate warehouse, a limit rod is slidably installed on the side of the slider, the limit rod is fixedly installed on the side of the intermediate warehouse, a toggle rod is fixedly installed on the upper side of the slider, the toggle rod is fixedly connected to the piston shaft, and the toggle rod is slidably installed on the inner wall of the vertical groove.

[0010] Furthermore, the storage component includes an upper plate, which is fixedly mounted on the side of the middle bin, and the collecting frame is fixedly mounted on the lower side of the upper plate. Two upper blocks are symmetrically fixedly mounted on the upper side of the upper plate. A limiting groove is provided on the upper side of the upper plate, and a moving block is slidably mounted on the inner wall of the limiting groove. A bottom plate is fixedly mounted on the moving block, and the bottom plate is fixedly mounted on the lower side of the collecting tank. A side block is fixedly mounted on the outer surface of the collecting tank. A second leakage hole is provided on the upper plate, and the diameter of the second leakage hole is equal to the diameter of the collecting tank. A rectangular groove is provided on the inner wall of the second leakage hole, and the shape of the rectangular groove on the inner wall of the second leakage hole is consistent with the shape of the side block.

[0011] Furthermore, a fixed shaft is fixedly installed on the bottom plate, the fixed shaft is coaxial with the collection tank, a baffle is fixedly installed on the inner wall of the collection tank, and a first leakage hole is arranged on the outer surface of the fixed sleeve, and the first leakage hole is located above the collection tank.

[0012] Furthermore, a floating plate is slidably mounted on the outer surface of the fixed shaft, and the distance between the end surface of the baffle plate and the axis of the fixed shaft is smaller than the distance between the end surface of the bottom plate and the axis of the fixed shaft.

[0013] Furthermore, the toggle assembly includes a vertical shaft, which is rotatably mounted on the upper block, a toggle lever is fixedly mounted on the outer surface of the vertical shaft, a first gear is also fixedly mounted on the outer surface of the vertical shaft, the first gear is located on the upper side of the toggle lever, a lower fixed plate is fixedly mounted on the side of the intermediate compartment, a second gear is rotatably mounted on the lower fixed plate, and the second gear is meshed with the first gear.

[0014] Furthermore, the one-way control component includes an upper fixed plate, which is fixedly mounted on the side of the intermediate warehouse and located above the lower fixed plate. A first rotating shaft is rotatably mounted on the upper fixed plate, a third gear is fixedly mounted on the outer surface of the first rotating shaft, a connecting rod is slidably mounted on the upper fixed plate, the connecting rod is meshed with the third gear, a rack is fixedly mounted on the side of the connecting rod, and the rack is fixedly connected to the movable circle.

[0015] Furthermore, a second rotating shaft is rotatably installed at the lower end of the first rotating shaft, the second rotating shaft is fixedly connected to the second gear, the second rotating shaft is rotatably installed on the lower fixed plate, a ring is fixedly installed on the outer surface of the first rotating shaft, a toggle block is fixedly installed on the outer surface of the ring, a rotating disk is slidably installed on the lower side of the toggle block, the rotating disk is fixedly installed on the outer surface of the second rotating shaft, a driving block and a side shaft are fixedly installed on the side of the rotating disk, a rotating block is rotatably installed on the outer surface of the side shaft, a spring is wound on the outer surface of the side shaft, one end of the spring is fixedly installed on the outer surface of the side shaft, and one end of the spring is fixedly installed on the rotating block.

[0016] Compared with the prior art, the present invention has the following advantages: (1) the present invention realizes automatic extraction of oil, thereby improving work efficiency; (2) the present invention realizes automatic filling of oil, thereby avoiding leakage; (3) the present invention realizes the pushing of the oil tank, thereby improving the collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 6 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 7 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 8 It is a schematic diagram of the overall structure of the present invention.

[0025] Fig. 9 It is a schematic diagram of the overall structure of the present invention.

[0026] Fig.10 It is a schematic diagram of the overall structure of the present invention.

[0027] Fig.11 It is a schematic diagram of the overall structure of the present invention.

[0028] Fig.12 It is a schematic diagram of the overall structure of the present invention.

[0029] Fig.13 It is a schematic diagram of the overall structure of the present invention.

[0030] Fig.14 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure numerals: 1-oil production tree; 2-extraction mechanism; 3-infusion mechanism; 4-propelling mechanism; 5-collection frame; 201-oil production pipe; 202-intermediate chamber; 203-oil inlet hole; 204-fixed plate; 205-vertical groove; 206-motor; 207-turntable; 208-first connecting shaft; 209-first connecting rod; 210-second connecting rod; 211-second connecting rod; 212-sleeve; 213-piston shaft; 301-turn rod; 302-limiting rod; 303-slider; 304-third connecting rod; 305-connecting block; 306-fourth connecting rod; 307-movable week; 308-third connecting shaft; 309-fixed sleeve; 310-first leak hole; 311-collection tank; 312-side Block; 313-upper block; 314-limiting groove; 315-bottom plate; 316-upper plate; 317-moving block; 318-floating plate; 319-fixed shaft; 320-baffle; 321-support plate; 322-mounting hole; 401-rack; 402-connecting rod; 403-sleeve rod; 404-first gear; 405-shift rod; 406-upper fixed plate; 407-first rotating shaft; 408-second gear; 409-second leak hole; 410-lower fixed plate; 411-third gear; 412-rotating disk; 413-second rotating shaft; 414-sleeve ring; 415-shift block; 416-driving block; 417-rotating block; 418-side shaft; 419-spring; 420-vertical shaft. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further explained below in combination with and through specific implementation methods.

[0034] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] As attached Figure 1 ~Attached Fig.14 As shown, the extraction mechanism 2 includes an oil production pipe 201, an intermediate chamber 202, a motor 206 and an extraction assembly. The oil production pipe 201 is connected to the Christmas tree 1, the oil production pipe 201 is connected to the intermediate chamber 202, the motor 206 is installed on the intermediate chamber 202, the motor 206 is connected to the extraction assembly, and the extraction assembly is installed on the intermediate chamber 202; the infusion mechanism 3 includes a fixed sleeve 309, a collection tank 311, a switch assembly and a storage assembly. The fixed sleeve 309 is connected to the intermediate chamber 202, and the fixed sleeve 309 is connected to the switch assembly. The pushing mechanism 4 includes a toggle lever 405, a toggle assembly and a one-way control assembly, the toggle lever 405 is connected to the toggle assembly, the toggle assembly is connected to the switch assembly, the one-way control assembly is connected to the toggle assembly, and the toggle assembly is connected to the collection frame 5.

[0036] As attached Figure 2 ~Attached Fig.11As shown, an oil inlet hole 203 is arranged on the side of the intermediate compartment 202, the number of the oil production pipes 201 is the same as the number of the oil inlet holes 203, and each oil inlet hole 203 is connected to an oil production pipe 201 on the inner wall thereof, and the extraction assembly comprises a fixed plate 204, a motor 206 is fixedly mounted on the fixed plate 204, a turntable 207 is fixedly mounted on the output end of the motor 206, a first connecting shaft 208 is fixedly mounted on the side of the turntable 207, a first connecting rod 209 is rotatably mounted on the outer surface of the first connecting shaft 208, a second connecting rod 210 is rotatably mounted on the end of the first connecting rod 209 away from the first connecting shaft 208, a second connecting rod 211 is rotatably mounted on the end of the second connecting rod 210 away from the first connecting rod 209, a sleeve 212 is fixedly mounted on the side of the second connecting rod 211, a piston shaft 213 is fixedly mounted on the inner wall of the sleeve 212, a piston is fixedly mounted on the end of the piston shaft 213 away from the sleeve 212, and the piston shaft 213 is slidably mounted In the middle bin 202, the sliding direction is vertical; a vertical groove 205 is arranged on the side of the fixed plate 204, and the switch assembly includes a movable circle 307, which is slidably mounted on the inner wall of the fixed sleeve 309, and a third connecting shaft 308 is fixedly mounted on the outer surface of the movable circle 307, and a fourth connecting rod 306 is fixedly mounted on the outer surface of the third connecting shaft 308, and a connecting block 305 is fixedly mounted on the lower side of the fourth connecting rod 306, and a third connecting rod 304 is rotatably mounted on the connecting block 305, and a slider 303 is rotatably mounted on the end of the third connecting rod 304 away from the connecting block 305, and the slider 303 is slidably mounted on the side of the middle bin 202, and a limit rod 302 is slidably mounted on the side of the slider 303, and the limit rod 302 is fixedly mounted on the side of the middle bin 202, and a toggle rod 301 is fixedly mounted on the upper side of the slider 303, and the toggle rod 301 is fixedly connected to the piston shaft 213, and the toggle rod 301 is slidably mounted on the inner wall of the vertical groove 205.

[0037] As attached Figure 3 ~Attached Fig.12As shown, the storage assembly includes an upper plate 316, the upper plate 316 is fixedly mounted on the side of the intermediate bin 202, the collection frame 5 is fixedly mounted on the lower side of the upper plate 316, two upper blocks 313 are symmetrically fixedly mounted on the upper side of the upper plate 316, a limiting groove 314 is arranged on the upper side of the upper plate 316, a moving block 317 is slidably mounted on the inner wall of the limiting groove 314, a bottom plate 315 is fixedly mounted on the moving block 317, the bottom plate 315 is fixedly mounted on the lower side of the collection tank 311, a side block 312 is fixedly mounted on the outer surface of the collection tank 311, a second leak hole 409 is arranged on the upper plate 316, the diameter of the second leak hole 409 is equal to the diameter of the collection tank 311, and a rectangular hole 409 is arranged on the inner wall of the second leak hole 409. shaped groove, the rectangular groove shape of the inner wall of the second leakage hole 409 is consistent with the shape of the side block 312; a fixed shaft 319 is fixedly installed on the bottom plate 315, and the fixed shaft 319 is coaxial with the collecting tank 311. A baffle 320 is fixedly installed on the inner wall of the collecting tank 311. A first leakage hole 310 is arranged on the outer surface of the fixed sleeve 309, and the first leakage hole 310 is located above the collecting tank 311; a mounting hole 322 is arranged on the floating plate 318, and the outer surface of the fixed shaft 319 is slidably installed on the inner wall of the mounting hole 322, the distance between the end face of the baffle 320 and the axis of the fixed shaft 319 is smaller than the distance between the end face of the bottom plate 315 and the axis of the fixed shaft 319, and a support plate 321 is fixedly installed on the lower side of the floating plate 318.

[0038] As attached Figure 3 ~Attached Fig.14As shown, the toggle assembly includes a vertical shaft 420, which is rotatably mounted on the upper block 313, a toggle lever 405 is fixedly mounted on the outer surface of the vertical shaft 420, a first gear 404 is also fixedly mounted on the outer surface of the vertical shaft 420, and the first gear 404 is located on the upper side of the toggle lever 405, a lower fixed plate 410 is fixedly mounted on the side of the intermediate warehouse 202, a second gear 408 is rotatably mounted on the lower fixed plate 410, and the second gear 408 is meshed with the first gear 404; the one-way control assembly includes an upper fixed plate 406, which is fixedly mounted on the side of the intermediate warehouse 202, the upper fixed plate 406 is located above the lower fixed plate 410, a first rotating shaft 407 is rotatably mounted on the upper fixed plate 406, a third gear 411 is fixedly mounted on the outer surface of the first rotating shaft 407, a connecting rod 402 is slidably mounted on the upper fixed plate 406, the connecting rod 402 is meshed with the third gear 411, and the connecting rod 402 is fixedly mounted on the side of the connecting rod 402. A rack 401 is installed, and a sleeve rod 403 is fixedly installed on the side of the rack 401, and the sleeve rod 403 is fixedly connected to the movable week 307; a second rotating shaft 413 is rotatably installed on the lower end of the first rotating shaft 407, and the second rotating shaft 413 is fixedly connected to the second gear 408, and the second rotating shaft 413 is rotatably installed on the lower fixed plate 410, a collar 414 is fixedly installed on the outer surface of the first rotating shaft 407, and a toggle block 415 is fixedly installed on the outer surface of the collar 414, and a rotating disk 412 is slidably installed on the lower side of the toggle block 415, and the rotating disk 412 is fixedly installed on the outer surface of the second rotating shaft 413, and a driving block 416 and a side shaft 418 are fixedly installed on the side of the rotating disk 412, and a rotating block 417 is rotatably installed on the outer surface of the side shaft 418, and a spring 419 is wound on the outer surface of the side shaft 418, one end of the spring 419 is fixedly installed on the outer surface of the side shaft 418, and one end of the spring 419 is fixedly installed on the rotating block 417.

[0039] The working principle of the present invention is as follows.

[0040] (i) The motor 206 is started, and the motor 206 drives the second connecting rod 210 to move through the first connecting rod 209, and the second connecting rod 210 drives the piston shaft 213 to move through the sleeve 212, and then the oil in the Christmas tree 1 is sent into the intermediate chamber 202 through the production pipe 201 through the piston at the lower part of the piston shaft 213. At the same time, the piston shaft 213 drives the slider 303 to slide along the limit rod 302 through the turning rod 301, and the slider 303 drives the connecting block 305 to move through the third connecting rod 304, and the connecting block 305 drives the third connecting shaft 308 to move through the fourth connecting rod 306, and the third connecting shaft 308 drives the movable ring 307 to move, so that the oil in the intermediate chamber 202 falls into the collection tank 311 through the first leakage hole 310.

[0041] (ii) As the liquid level in the collection tank 311 rises, the floating plate 318 gradually rises along the fixed shaft 319 . When the floating plate 318 contacts the baffle 320 , the baffle 320 is closed by the floating plate 318 .

[0042] (III) When the movable circle 307 moves, the connecting rod 402 is driven to move through the rack 401, the connecting rod 402 drives the third gear 411 to rotate, the third gear 411 drives the first rotating shaft 407 to rotate, the first rotating shaft 407 drives the collar 414 to rotate, the collar 414 drives the rotating block 417 to move through the toggle block 415, the rotating block 417 drives the rotating disk 412 to rotate through the driving block 416, the rotating disk 412 drives the second rotating shaft 413 to rotate, the second rotating shaft 413 drives the first gear 404 to rotate through the second gear 408, the first gear 404 drives the lever 405 to rotate through the vertical shaft 420, and the collecting tank 311 filled with liquid is sent into the collecting frame 5 through the second leak hole 409 through the lever 405.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention, and any reference numerals in the claims should not be considered as limiting the claims involved.

Claims

1. A single-tube multi-tube wellhead Christmas tree device for an offshore platform, comprising a Christmas tree (1) and a collection frame (5), characterized in that: The offshore platform single-tube multi-tube wellhead Christmas tree device also includes an extraction mechanism (2), an injection mechanism (3) and a pushing mechanism (4); the extraction mechanism (2) includes an oil production pipe (201), an intermediate chamber (202), a motor (206) and an extraction component; the oil production pipe (201) is connected to the Christmas tree (1); the oil production pipe (201) is connected to the intermediate chamber (202); the motor (206) is installed on the intermediate chamber (202); the motor (206) is connected to the extraction component; and the extraction component is installed on the intermediate chamber (202); The infusion mechanism (3) comprises a fixed sleeve (309), a collection tank (311), a switch assembly and a storage assembly, the fixed sleeve (309) is connected to and communicates with the intermediate chamber (202), the fixed sleeve (309) is connected to the switch assembly, the switch assembly is connected to the extraction assembly, the switch assembly is mounted on the side of the intermediate chamber (202), the switch assembly is connected to the fixed sleeve (309), the fixed sleeve (309) is connected to the storage assembly, the collection frame (5) is mounted below the storage assembly, and the storage assembly is mounted on the side of the intermediate chamber (202); The pushing mechanism (4) comprises a toggle lever (405), a toggle assembly and a one-way control assembly, the toggle lever (405) is connected to the toggle assembly, the toggle assembly is connected to the switch assembly, the one-way control assembly is connected to the toggle assembly, and the toggle assembly is connected to the collection frame (5).

2. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 1, characterized in that: An oil inlet hole (203) is arranged on the side of the intermediate chamber (202); the number of the oil production pipes (201) is the same as the number of the oil production pipes (203); the inner wall of each oil production pipe (201) is connected to an oil production pipe (201); the extraction assembly comprises a fixed plate (204); a motor (206) is fixedly mounted on the fixed plate (204); a rotating disk (207) is fixedly mounted on the output end of the motor (206); a first connecting shaft (208) is fixedly mounted on the side of the rotating disk (207); a first connecting rod (209) is rotatably mounted on the outer surface of the first connecting shaft (208); A second connecting rod (210) is rotatably mounted on one end of the first connecting rod (209) away from the first connecting shaft (208); a second connecting rod (211) is rotatably mounted on one end of the second connecting rod (210) away from the first connecting rod (209); a sleeve (212) is fixedly mounted on the side of the second connecting rod (211); a piston shaft (213) is fixedly mounted on the inner wall of the sleeve (212); a piston is fixedly mounted on one end of the piston shaft (213) away from the sleeve (212); and the piston shaft (213) is slidably mounted in the middle compartment (202) and the sliding direction is a vertical direction.

3. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 2, characterized in that: A vertical groove (205) is provided on the side of the fixed plate (204), and the switch assembly comprises a movable ring (307), the movable ring (307) is slidably mounted on the inner wall of the fixed sleeve (309), a third connecting shaft (308) is fixedly mounted on the outer surface of the movable ring (307), a fourth connecting rod (306) is fixedly mounted on the outer surface of the third connecting shaft (308), a connecting block (305) is fixedly mounted on the lower side of the fourth connecting rod (306), and a third connecting rod (304) is rotatably mounted on the connecting block (305). A slider (303) is rotatably mounted on one end of the connecting rod (304) away from the connecting block (305); the slider (303) is slidably mounted on the side of the intermediate bin (202); a limit rod (302) is slidably mounted on the side of the slider (303); the limit rod (302) is fixedly mounted on the side of the intermediate bin (202); a crank rod (301) is fixedly mounted on the upper side of the slider (303); the crank rod (301) is fixedly connected to the piston shaft (213); and the crank rod (301) is slidably mounted on the inner wall of the vertical groove (205).

4. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 3, characterized in that: The storage assembly comprises an upper plate (316), the upper plate (316) being fixedly mounted on the side of the intermediate bin (202), the collection frame (5) being fixedly mounted on the lower side of the upper plate (316), two upper blocks (313) being fixedly mounted symmetrically on the upper side of the upper plate (316), a limiting groove (314) being arranged on the upper side of the upper plate (316), a moving block (317) being slidably mounted on the inner wall of the limiting groove (314), and a bottom block (313) being fixedly mounted on the moving block (317). The bottom plate (315) is fixedly mounted on the lower side of the collecting tank (311), a side block (312) is fixedly mounted on the outer surface of the collecting tank (311), a second leak hole (409) is arranged on the upper plate (316), the diameter of the second leak hole (409) is equal to the diameter of the collecting tank (311), a rectangular groove is arranged on the inner wall of the second leak hole (409), and the shape of the rectangular groove on the inner wall of the second leak hole (409) is consistent with the shape of the side block (312).

5. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 4, characterized in that: A fixed shaft (319) is fixedly mounted on the bottom plate (315), the fixed shaft (319) and the collection tank (311) are coaxial, a baffle (320) is fixedly mounted on the inner wall of the collection tank (311), and a first leakage hole (310) is provided on the outer surface of the fixed sleeve (309), the first leakage hole (310) being located above the collection tank (311).

6. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 5, characterized in that: A floating plate (318) is slidably mounted on the outer surface of the fixed shaft (319), and the distance between the end surface of the baffle plate (320) and the axis of the fixed shaft (319) is smaller than the distance between the end surface of the bottom plate (315) and the axis of the fixed shaft (319).

7. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 4, characterized in that: The shifting assembly comprises a vertical shaft (420), the vertical shaft (420) being rotatably mounted on the upper block (313), a shifting rod (405) being fixedly mounted on the outer surface of the vertical shaft (420), a first gear (404) being also fixedly mounted on the outer surface of the vertical shaft (420), the first gear (404) being located on the upper side of the shifting rod (405), a lower fixed plate (410) being fixedly mounted on the side of the intermediate compartment (202), a second gear (408) being rotatably mounted on the lower fixed plate (410), and the second gear (408) being meshed with the first gear (404).

8. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 7, characterized in that: The one-way control component comprises an upper fixed plate (406), the upper fixed plate (406) being fixedly mounted on the side of the intermediate bin (202), the upper fixed plate (406) being located above the lower fixed plate (410), a first rotating shaft (407) being rotatably mounted on the upper fixed plate (406), a third gear (411) being fixedly mounted on the outer surface of the first rotating shaft (407), a connecting rod (402) being slidably mounted on the upper fixed plate (406), the connecting rod (402) being meshed with the third gear (411), a rack (401) being fixedly mounted on the side of the connecting rod (402), and the rack (401) being fixedly connected to the movable ring (307).

9. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 8, characterized in that: A second rotating shaft (413) is rotatably mounted on the lower end of the first rotating shaft (407), the second rotating shaft (413) is fixedly connected to the second gear (408), the second rotating shaft (413) is rotatably mounted on the lower fixed plate (410), a collar (414) is fixedly mounted on the outer surface of the first rotating shaft (407), a toggle block (415) is fixedly mounted on the outer surface of the collar (414), a rotating disk (412) is slidably mounted on the lower side of the toggle block (415), and the rotating disk (412) is fixedly mounted on the outer surface of the second rotating shaft (413), a driving block (416) and a side shaft (418) are fixedly mounted on the side of the rotating disk (412), a rotating block (417) is rotatably mounted on the outer surface of the side shaft (418), a spring (419) is wound around the outer surface of the side shaft (418), one end of the spring (419) is fixedly mounted on the outer surface of the side shaft (418), and one end of the spring (419) is fixedly mounted on the rotating block (417).

Images