A single-tube multi-tube wellhead Christmas tree device for an offshore platform

Abstract

The present invention discloses a single-tube multi-tube wellhead Christmas tree device for an offshore platform, belonging to the technical field of offshore platform wellhead oil production equipment. The device comprises a Christmas tree, an extraction mechanism, an infusion mechanism, a pushing mechanism and a collection frame. The extraction mechanism comprises a Christmas pipe, an intermediate bin, a motor and an extraction assembly. The Christmas pipe is connected to the Christmas tree, the Christmas pipe is connected to the intermediate bin, the motor is mounted on the intermediate bin, the motor is connected to the extraction assembly, and the extraction assembly is mounted on the intermediate bin. The infusion mechanism comprises a fixed sleeve, a collection tank, a switch assembly and a storage assembly. The fixed sleeve is connected to 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 mounted 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 collection frame is mounted below the storage 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.

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 production of offshore oil and natural gas has become a vital source of energy supply. Offshore platforms, as the core facilities for offshore oil and gas production, carry out complex drilling, production, and processing tasks. The Christmas tree, a key device connecting the wellhead to surface facilities, is responsible for controlling oil and gas outflow, monitoring downhole pressure, and providing safety protection. Traditional offshore Christmas tree designs typically utilize a single wellhead structure to handle oil and gas flows. However, with technological advancements and the diversification of oilfield development requirements, single-tube, multi-tube Christmas tree systems are gaining increasing attention.

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

[0004] Patent publication number CN116146136A discloses a method for installing a single-cylinder multi-well wellhead device and a single-cylinder 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 support casing, a water-blocking casing is installed on the support casing, and the water-blocking casing is installed inside the lower base assembly. However, the patent cannot realize the collection of oil. Therefore, to address this defect, an offshore platform single-cylinder multi-wellhead oil production tree device was invented. Summary of the Invention

[0005] In response to 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 includes 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 collection tank, a switch assembly and a storage assembly. The fixed sleeve is connected to and communicated with the intermediate compartment, 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 compartment, the switch assembly is connected to the fixed sleeve, the fixed sleeve is connected to the storage assembly, the collection frame is installed below the storage assembly, and the storage assembly is installed on the side of the intermediate compartment.

[0007] The pushing mechanism includes a toggle rod, a toggle assembly and a one-way control assembly. The toggle rod 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, and the number of oil production pipes is consistent with the number of oil inlet holes. The inner wall of each oil inlet hole is connected to an oil production pipe respectively. The extraction component includes a fixed plate, the motor is fixedly mounted on the fixed plate, the turntable is fixedly mounted on the output end of the motor, the first connecting shaft is fixedly mounted on the side of the turntable, the first connecting rod is rotatably mounted on the outer surface of the first connecting shaft, the second connecting rod is rotatably mounted on the end of the first connecting rod away from the first connecting shaft, the 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 shaft, which is slidably installed on the inner wall of the fixed sleeve, and a third connecting shaft is fixedly installed on the outer surface of the movable shaft, and a fourth connecting rod is fixedly installed on the outer surface of the third connecting shaft, and a connecting block is fixedly installed on the lower side of the fourth connecting rod, and the third connecting rod is rotatably installed on the connecting block, and a slider is rotatably installed on the end of the third connecting rod away from the connecting block, and the slider is slidably installed on the side of the intermediate warehouse, and a limit rod is slidably installed on the side of the slider, and the limit rod is fixedly installed on the side of the intermediate warehouse, and a toggle rod is fixedly installed on the upper side of the slider, and 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 assembly includes an upper plate, which is fixedly mounted on the side of the intermediate bin, and the collection 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 collection tank. A side block is fixedly mounted on the outer surface of the collection 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 collection 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 provided 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 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 fixedly mounted on the outer surface of the vertical shaft, a first gear 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 engaged with the first gear.

[0014] Furthermore, the one-way control assembly 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 engaged 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 shaft.

[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, and 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, and 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, and 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, and 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] The beneficial effects of the present invention compared with the prior art are: (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 oil tanks, thereby improving 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 This is a schematic diagram of the connection structure between the Christmas tree and the production pipe of the present invention.

[0019] Figure 3 This is a schematic structural diagram of the extraction mechanism and the pushing mechanism of the present invention.

[0020] Figure 4 for Figure 3 Schematic diagram of the local structure at point A in the middle.

[0021] Figure 5 Schematic diagram of the infusion mechanism structure of the present invention Figure 1 .

[0022] Figure 6 for Figure 5 Schematic diagram of the local structure at point B in the middle.

[0023] Figure 7 Schematic diagram of the infusion mechanism structure of the present invention Figure 2 .

[0024] Figure 8 for Figure 7 Schematic diagram of the local structure at point C in the middle.

[0025] Figure 9 Schematic diagram of the driving mechanism structure of the present invention Figure 1 .

[0026] Figure 10 for Figure 9 Schematic diagram of the local structure at point D in the middle.

[0027] Figure 11 Schematic diagram of the driving mechanism structure of the present invention Figure 2 .

[0028] Figure 12 for Figure 11 Schematic diagram of the local structure at point E in the middle.

[0029] Figure 13 Schematic diagram of the infusion mechanism structure of the present invention Figure 3 .

[0030] Figure 14 Schematic diagram of the infusion mechanism structure of the present invention Figure 4 .

[0031] Figures: 1- Christmas tree; 2- extraction mechanism; 3- infusion mechanism; 4- pushing mechanism; 5- collection frame; 201- oil production pipe; 202- intermediate chamber; 203- oil inlet hole; 204- fixed plate; 205- vertical slot; 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- turning rod; 302- limiting rod; 303- sliding block; 304- third connecting rod; 305- connecting block; 306- fourth connecting rod; 307- movable shaft; 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 lever; 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-collar; 415-shift block; 416-driving block; 417-rotating block; 418-side shaft; 419-spring; 420-vertical shaft. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further illustrated below in combination with specific implementation methods.

[0033] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting 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.

[0034] As attached Figure 1 ~Attached Figure 14As 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, the fixed sleeve 309 is connected to the switch assembly and the storage assembly. The push 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.

[0035] As attached Figure 2 ~Attached Figure 11 As shown, an oil inlet hole 203 is provided on the side of the intermediate compartment 202, and the number of oil production pipes 201 is consistent with the number of oil inlet holes 203. The inner wall of each oil inlet hole 203 is connected to an oil production pipe 201 respectively. The extraction component includes 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 is slidably mounted The movable shaft 307 is slidably mounted on the inner wall of the fixed sleeve 309, and the third connecting shaft 308 is fixedly mounted on the outer surface of the movable shaft 307. The fourth connecting rod 306 is fixedly mounted on the outer surface of the third connecting shaft 308. The lower side of the fourth connecting rod 306 is fixedly mounted with a connecting block 305, and the third connecting rod 304 is rotatably mounted on the connecting block 305. The end of the third connecting rod 304 away from the connecting block 305 is rotatably mounted with a slider 303. The slider 303 is slidably mounted on the side of the intermediate warehouse 202, and 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 warehouse 202, and a toggle rod 301 is fixedly mounted on the upper side of the slider 303. 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.

[0036] As attached Figure 3 ~Attached Figure 12 As 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, and two upper blocks 313 are symmetrically fixedly mounted on the upper side of the upper plate 316. A limiting groove 314 is provided on the upper side of the upper plate 316, and 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, and 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 provided 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 is provided on the inner wall of the second leak hole 409. shaped groove, the rectangular groove shape on 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 collection tank 311. A baffle 320 is fixedly installed 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, and the first leakage hole 310 is located above the collection tank 311; a mounting hole 322 is provided 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.

[0037] As attached Figure 3 ~Attached Figure 14As shown, the toggle assembly includes a vertical shaft 420, which is rotatably mounted on the upper block 313, and 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 compartment 202, and 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; a one-way control assembly includes an upper fixed plate 406, which is fixedly mounted on the side of the intermediate compartment 202, and 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, and a third gear 411 is fixedly mounted on the outer surface of the first rotating shaft 407, and a connecting rod 402 is slidably mounted on the upper fixed plate 406, and the connecting rod 402 is meshed with the third gear 411. 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 shaft 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, and 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.

[0038] The working principle of the present invention is as follows.

[0039] (1) Motor 206 is started. Motor 206 drives second connecting rod 210 to move via first connecting rod 209. Second connecting rod 210 drives piston shaft 213 to move via sleeve 212. Oil in Christmas tree 1 is then delivered to intermediate chamber 202 through production pipe 201 by the piston at the bottom of piston shaft 213. Simultaneously, piston shaft 213 drives slider 303 to slide along limit rod 302 via crank 301. Slider 303 drives connecting block 305 to move via third connecting rod 304. Connecting block 305 drives third connecting shaft 308 to move via fourth connecting rod 306. Third connecting shaft 308 drives movable shaft 307 to move, causing oil in intermediate chamber 202 to fall into collection tank 311 through first leak hole 310.

[0040] (ii) As the liquid level in the collection tank 311 rises, the floating plate 318 gradually rises along the fixed axis 319 . When the floating plate 318 contacts the baffle 320 , the baffle 320 is closed by the floating plate 318 .

[0041] (3) When the movable shaft 307 moves, it drives the connecting rod 402 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 toggle lever 405 to rotate through the vertical shaft 420, and the collection tank 311 filled with oil is sent into the collection frame 5 through the second leakage hole 409 through the toggle lever 405.

[0042] 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 invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The scope of the invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be encompassed within the present invention, and any reference signs in the claims should not be construed as limiting the claim to which they relate.

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 further comprises an extraction mechanism (2), an injection mechanism (3) and a pushing mechanism (4); the extraction mechanism (2) comprises a production pipe (201), an intermediate chamber (202), a motor (206) and an extraction component; the production pipe (201) is connected to the Christmas tree (1); the 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) includes 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 slidably connected to the switch assembly. The switch assembly is transmission-connected to the extraction assembly. The switch assembly is mounted on the side of the intermediate chamber (202). The collection frame (5) is mounted below the storage assembly. 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 fixedly connected to the toggle assembly, the toggle assembly is transmission-connected to the switch assembly, and the one-way control assembly is transmission-connected to the toggle assembly; The extraction mechanism (2) is used to send the oil in the Christmas tree (1) into the intermediate bin (202), the injection mechanism (3) is used to send the oil in the intermediate bin (202) into the collection tank (311), and the pushing mechanism (4) is used to send the collection tank (311) filled with oil into 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 provided 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 holes (203). The inner wall of each oil production hole (203) is connected to an oil production pipe (201). The extraction component includes a fixed plate (204). The 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 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 intermediate compartment (202) and the sliding direction is vertical.

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 includes a movable shaft (307), the movable shaft (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 shaft (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 toggle rod (301) is fixedly mounted on the upper side of the slider (303), 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).

4. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 3, characterized in that: 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 fixedly mounted on the upper side of the upper plate (316) in a symmetrical shape, a limiting groove (314) is provided 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), and a bottom block (317) is fixedly mounted on the moving block (317). The bottom plate (315) is fixedly mounted on the lower side of the collecting tank (311), and a side block (312) is fixedly mounted on the outer surface of the collecting tank (311). A second leak hole (409) is provided on the upper plate (316), and the diameter of the second leak hole (409) is equal to the diameter of the collecting tank (311). A rectangular groove is provided 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) being coaxial with the collection tank (311), 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 (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 toggle assembly includes a vertical shaft (420), the vertical shaft (420) 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), 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 compartment (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).

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

9. The offshore platform single-tube multi-tube wellhead Christmas tree device according to claim 8, characterized in that: The lower end of the first rotating shaft (407) is rotatably mounted with a second rotating shaft (413), the second rotating shaft (413) is fixedly connected to the second gear (408), and 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), and a rotating disk (412) is slidably mounted on the lower side of the toggle block (415). (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).

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