Modularized quick-release blowout preventer for ocean platform

Abstract

The invention relates to the technical field of blowout preventers, and particularly discloses a modular quick-release type blowout preventer for an ocean platform, which comprises a main body unit and a sealing unit, the main body unit comprises a blowout preventer shell, one side of the blowout preventer shell is provided with a first rectangular groove and a second rectangular groove, and the first rectangular groove is communicated with the second rectangular groove; and a plurality of third rectangular grooves are formed in the blowout preventer shell. A second rectangular groove and a plurality of fourth rectangular grooves can be sealed only by rotating a screw rod, the screw rod rotates to drive a rectangular sealing cover to seal the second rectangular groove, and the rectangular sealing cover moves to drive a third rectangular plate and a third wedge block to move. A third wedge-shaped block extrudes a second wedge-shaped block to drive the second wedge-shaped block, a second rectangular plate, a first connecting plate, a first rectangular plate and a first wedge-shaped block to move, so that when the first wedge-shaped block extrudes the connecting block, the connecting block seals a fourth rectangular groove, operation is very convenient and rapid, and mounting and dismounting do not need to be conducted by rotating a plurality of bolts.

Description

Technical Field

[0001] The present invention relates to the technical field of blowout preventers, and in particular to a modular quick-disassembly blowout preventer for an offshore platform. Background Art

[0002] A blowout preventer is a safety sealing wellhead device used to close the wellhead during operations such as well testing, well workover, and well completion to prevent blowout accidents. It combines the functions of full closure and semi-closure, and has the characteristics of simple structure, easy operation, and high pressure resistance. When the oil and gas pressure in the well is very high, the blowout preventer can seal the wellhead (shut it off). When heavy mud is pumped into the drill pipe, there is a four-way connection under the ram, which can replace the gas-invaded mud and increase the pressure of the liquid column in the well to suppress the ejection of high-pressure oil and gas.

[0003] Publication No. CN222207855U discloses a single-ram coiled tubing blowout preventer, and publication No. CN219993667U discloses a quick installation mechanism for a blowout preventer. In their background technologies, it is proposed that the device is installed and fixed by threaded connection. This connection method is rather troublesome during installation and disassembly. In addition to the parts fixed by bolts proposed in the above-mentioned prior art, a side door is usually provided on the blowout preventer, and this side door is also fixed by a plurality of bolts. Moreover, the side door needs to be opened after each use to clean the inside of the blowout preventer housing. Therefore, in the existing blowout preventer, except that the driving ends on both sides for driving the rams are fixed to the blowout preventer housing by bolts, its side door is also fixed by bolts, that is, multiple bolts need to be installed and removed one by one during each installation and disassembly, which is very troublesome. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a modular quick-disassembly blowout preventer for an offshore platform. The technical problem to be solved is that in the existing blowout preventer, except that the driving ends on both sides for driving the rams are fixed to the blowout preventer housing by bolts, its side door is also fixed by bolts, that is, multiple bolts need to be installed and removed one by one during each installation and disassembly, which is very troublesome.

[0005] To achieve the above technical purpose, the technical solutions adopted by the present invention are as follows.

[0006] The present invention provides a modular quick-disassembly blowout preventer for an offshore platform: It includes a main body unit and a sealing unit. The main body unit includes a blowout preventer housing. One side of the blowout preventer housing is provided with a first rectangular groove and a second rectangular groove, and the first rectangular groove and the second rectangular groove are communicated with each other. A plurality of third rectangular grooves are provided in the blowout preventer housing. A plurality of fourth rectangular grooves are provided on both sides of the blowout preventer housing, and the plurality of fourth rectangular grooves are respectively communicated with the corresponding third rectangular grooves. A plurality of cylinders are provided on both sides of the blowout preventer housing. A hydraulic cylinder is installed in the cylinder. A ram is fixed to the extending end of the hydraulic cylinder. The ram is slidably fitted in the third rectangular groove. The sealing unit includes a rectangular sealing cover. A first sealing ring is placed in the second rectangular groove. A second sealing ring is placed in the fourth rectangular groove. A connecting block is fixed to one end of the cylinder. The connecting block can be embedded into the fourth rectangular groove. A plurality of first rectangular guide frames are provided on both sides of the blowout preventer housing. The plurality of first rectangular guide frames are evenly distributed above and below the corresponding fourth rectangular grooves. A first rectangular plate is slidably connected in the first rectangular guide frame. A first wedge block is fixed to one end of the first rectangular plate. The first wedge block can squeeze the connecting block and seal the connecting block in the fourth rectangular groove. A control assembly is provided on one side of the rectangular sealing cover for controlling the movement of the rectangular sealing cover and sealing the rectangular sealing cover in the second rectangular groove. A driving assembly is further provided on both sides of the blowout preventer housing for driving the first wedge block to move. When the control assembly drives the rectangular sealing cover to seal the second rectangular groove, the driving assembly can also synchronously drive the first wedge block to seal the connecting block in the fourth rectangular groove.

[0007] As a preferred solution of the blowout preventer for a modular quick-disassembly offshore platform according to the present invention, wherein: the length and width of the second rectangular groove are greater than the length and width of the first rectangular groove. The length and width of the rectangular sealing cover are greater than the length and width of the first rectangular groove and less than the length and width of the second rectangular groove. The length and width of the fourth rectangular groove are greater than the length and width of the third rectangular groove. The length and width of the connecting block are greater than the length and width of the third rectangular groove and less than the length and width of the fourth rectangular groove.

[0008] As a preferred solution of the blowout preventer for a modular quick-disassembly offshore platform according to the present invention, wherein: a first connecting plate is commonly fixed between two correspondingly arranged first rectangular plates. A second connecting plate is commonly fixed between two correspondingly arranged first rectangular guide frames. A plurality of second rectangular guide frames are fixed on both sides of the blowout preventer housing. Two cylindrical rods are fixed to one side of the second rectangular guide frame. The end of the cylindrical rod away from the second rectangular guide frame is fixed to the second connecting plate.

[0009] As a preferred solution of the blowout preventer for a modular quick-release offshore platform according to the present invention, the following is provided: the cylindrical rod penetrates through the first connecting plate, the first connecting plate is slidably fitted outside the cylindrical rod, a first elastic member is sleeved outside the cylindrical rod, one end of the first elastic member abuts against the first connecting plate, and the other end of the first elastic member abuts against the second connecting plate. It should be noted that the first elastic member can use devices such as springs, and in the normal state of the first elastic member, the distance between the first wedge blocks arranged corresponding to the upper and lower of the fourth rectangular groove is greater than the height of the connecting block, that is, the connecting block can pass through the corresponding first wedge blocks and be embedded into the fourth rectangular groove.

[0010] As a preferred solution of the blowout preventer for a modular quick-release offshore platform according to the present invention, the following is provided: the driving assembly includes a second rectangular plate slidably fitted in the corresponding second rectangular guide frame, a second wedge block is fixed at one end of the second rectangular plate extending into the second rectangular guide frame, a plurality of U-shaped frames are fixed on the rectangular sealing cover, a vertical rod is jointly fixed at one end of two corresponding U-shaped frames, a plurality of third rectangular plates are fixed on the vertical rod, a third wedge block is fixed at one end of the third rectangular plate away from the vertical rod, the third wedge block can squeeze the second wedge block and drive the second wedge block to move, and the third rectangular plate is slidably fitted in the corresponding second rectangular guide frame.

[0011] As a preferred solution of the blowout preventer for a modular quick-release offshore platform according to the present invention, the following is provided: the control assembly includes an annular plate arranged on one side of the rectangular sealing cover, a threaded cylinder is fixed inside the annular plate, a screw rod is rotatably connected to one side of the rectangular sealing cover, a turntable is fixed at one end of the screw rod away from the rectangular sealing cover, and the screw rod is in threaded connection with the threaded cylinder.

[0012] As a preferred solution of the blowout preventer for a modular quick-release offshore platform according to the present invention, the following is provided: a plurality of positioning plates are fixed on one side of the blowout preventer housing, positioning holes are formed in the positioning plates, a plurality of mounting plates are fixed on the outer side of the annular plate at equal intervals along its radial direction, a third rectangular guide frame is fixed on one side of the mounting plate, a clamping plate is slidably connected in the third rectangular guide frame, and the clamping plate can be embedded into the corresponding positioning holes.

[0013] As a preferred embodiment of the blowout preventer for modular quick - detachable offshore platforms described in the present invention, the following is provided: A connecting shaft is fixed to one end of the clamping plate close to the threaded cylinder. A convex block is fixed on the mounting plate. The connecting shaft passes through the convex block and slides within the convex block. A second elastic member is sleeved outside the connecting shaft. One end of the second elastic member abuts against the clamping plate, and the other end of the second elastic member abuts against the convex block. It should be noted that the second elastic member can use devices such as springs. And in the normal state of the second elastic member, the distance between the mutually - facing and mutually - remote ends of the two clamping plates is greater than the distance between the two mutually - facing positioning plates. That is, in the normal state of the second elastic member, the clamping plate can be inserted into the corresponding positioning hole.

[0014] As a preferred embodiment of the blowout preventer for modular quick - detachable offshore platforms described in the present invention, the following is provided: An annular groove is formed on the outside of the threaded cylinder. A driving disk is arranged on the outside of the threaded cylinder. A circular hole is formed in the driving disk. The diameter of the circular hole is larger than the diameter of the annular groove and smaller than the diameter of the threaded cylinder. The circular hole of the driving disk is rotationally fitted within the annular groove.

[0015] As a preferred embodiment of the blowout preventer for modular quick - detachable offshore platforms described in the present invention, the following is provided: A convex column is fixed on the connecting shaft. A plurality of inclined grooves are formed in the driving disk. The convex column is slidably fitted within the corresponding inclined groove. A grip rod is fixed on the driving disk.

[0016] From the above technical solutions, it can be seen that the present application has the following beneficial effects: 1: When the driving disk is rotated, the convex column is extruded through the inclined groove, causing the convex column to move towards the threaded cylinder. When the convex column moves, it drives the connecting shaft and the clamping plate to move, and then moves the rectangular sealing cover towards the second rectangular groove. When the clamping plate moves to the positioning hole, release the grip rod. At this time, under the resilience of the second elastic member, the clamping plate is inserted into the positioning hole, that is, the position of the annular plate is fixed. Then rotate the screw rod to drive the rectangular sealing cover to move into the second rectangular groove, and the second rectangular groove can be sealed with the rectangular sealing cover.

[0017] 2: When moving the rectangular sealing cover, align the third rectangular plate and the third wedge - shaped block with the corresponding second rectangular guide frame, so that the third rectangular plate and the third wedge - shaped block are respectively inserted into the corresponding second rectangular guide frame. Then continue to move the rectangular sealing cover a certain distance, and then the clamping plate will move to be directly opposite to the positioning hole. When the clamping plate is inserted into the corresponding positioning hole, that is, the position of the annular plate is fixed. At this time, when rotating the screw rod, since the third rectangular plate is inserted into the corresponding second rectangular guide frame, the moving path of the rectangular sealing cover is restricted. When rotating the screw rod, the rectangular sealing cover directly moves into the second rectangular groove without deviation.

[0018] 3: And when the rectangular sealing cover moves, it also drives the third rectangular plate and the third wedge block to move within the corresponding second rectangular guide frame. When the third wedge block moves to squeeze the second wedge block, the second wedge block will drive the second rectangular plate to move when being squeezed. When the second rectangular plate moves, it drives the first connecting plate to move towards the connecting block. When the first connecting plate moves, it drives the first rectangular plate and the first wedge block to move, so that the first wedge block squeezes the connecting block and squeezes the connecting block into the fourth rectangular groove, thereby sealing the fourth rectangular groove by the connecting block.

[0019] 4: For the sealing of the second rectangular groove and multiple fourth rectangular grooves, only the screw needs to be rotated. When the screw rotates, it drives the rectangular sealing cover to seal the second rectangular groove. Moreover, when the rectangular sealing cover moves, it drives the third rectangular plate and the third wedge block to move. By the third wedge block squeezing the second wedge block, it drives the second wedge block, the second rectangular plate, the first connecting plate, the first rectangular plate, and the first wedge block to move, so that when the first wedge block squeezes the connecting block, the connecting block seals the fourth rectangular groove. The operation is very convenient and fast, and there is no need to rotate multiple bolts for installation and disassembly. In addition, the third rectangular plate and the third wedge block also play multiple roles. When the third rectangular plate and the third wedge block are initially embedded into the second rectangular guide frame, they play a role in restricting the moving path of the rectangular sealing cover, making the rectangular sealing cover move into the second rectangular groove without deviation. When the third rectangular plate and the third wedge block move subsequently, they squeeze the corresponding second wedge block, and can also play a role in sealing the fourth rectangular groove by the corresponding connecting block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them: Figure 1 is a schematic structural diagram of a modular quick-release blowout preventer for an offshore platform provided by the present invention; Figure 2 is a schematic cross-sectional structural diagram of a modular quick-release blowout preventer for an offshore platform provided by the present invention; Figure 3 provided by the present invention Figure 2 structural diagram at A in; Figure 4 is a schematic split structural diagram of a modular quick-release blowout preventer for an offshore platform provided by the present invention; Figure 5 provided by the present invention Figure 4 structural diagram at B in; Figure 6Schematic diagram of the disassembly structure of a blowout preventer for a modular quick-disassembly offshore platform provided by the present invention; Figure 7 Schematic diagram of the disassembly structure of the annular plate and the drive disk provided by the present invention; Figure 8 Schematic diagram of a partial structure of a blowout preventer for a modular quick-disassembly offshore platform provided by the present invention.

[0021] Description of the drawings: 100, main body unit; 101, blowout preventer housing; 102, first rectangular groove; 103, second rectangular groove; 104, third rectangular groove; 105, fourth rectangular groove; 106, cylinder body; 107, hydraulic cylinder; 108, ram; 200, sealing unit; 201, rectangular seal cover; 202, first sealing ring; 203, connecting block; 204, second sealing ring; 205, first rectangular guide frame; 206, first rectangular plate; 207, first wedge block; 208, first connecting plate; 209, second rectangular guide frame; 210, second rectangular plate; 211, second wedge block; 212, cylindrical rod; 213, first elastic member; 214, second connecting plate; 215, U-shaped frame; 216, vertical rod; 217, third rectangular plate; 218, third wedge block; 219, positioning plate; 220, positioning hole; 221, annular plate; 222, mounting plate; 223, third rectangular guide frame; 224, clamping plate; 225, connecting shaft; 226, convex block; 227, second elastic member; 228, convex column; 229, threaded barrel; 230, annular groove; 231, drive disk; 232, round hole; 233, inclined groove; 234, grip bar; 235, screw; 236, turntable. Detailed implementation manners

[0022] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the drawings in the specification.

[0023] Refer to Figures 1-8 : For an embodiment of the present invention, a blowout preventer for a modular quick-release offshore platform is provided, which includes a main body unit 100 and a sealing unit 200. The main body unit 100 includes a blowout preventer housing 101. A first rectangular groove 102 and a second rectangular groove 103 are formed on one side of the blowout preventer housing 101, and the first rectangular groove 102 and the second rectangular groove 103 are communicated with each other. A plurality of third rectangular grooves 104 are formed in the blowout preventer housing 101. A plurality of fourth rectangular grooves 105 are formed on both sides of the blowout preventer housing 101, and the plurality of fourth rectangular grooves 105 are respectively communicated with the corresponding third rectangular grooves 104. A plurality of cylinders 106 are provided on both sides of the blowout preventer housing 101. A hydraulic cylinder 107 is installed in the cylinder 106. A ram 108 is fixed to the extending end of the hydraulic cylinder 107. The ram 108 is slidably engaged in the third rectangular groove 104. The sealing unit 200 includes a rectangular sealing cover 201. A first sealing ring 202 is placed in the second rectangular groove 103. A second sealing ring 204 is placed in the fourth rectangular groove 105. A connecting block 203 is fixed to one end of the cylinder 106. The connecting block 203 can be embedded into the fourth rectangular groove 105. A plurality of first rectangular guide frames 205 are provided on both sides of the blowout preventer housing 101. The plurality of first rectangular guide frames 205 are evenly distributed above and below the corresponding fourth rectangular grooves 105. A first rectangular plate 206 is slidably connected in the first rectangular guide frame 205. A first wedge block 207 is fixed to one end of the first rectangular plate 206. The first wedge block 207 can squeeze the connecting block 203 and seal the connecting block 203 in the fourth rectangular groove 105. A control component for controlling the movement of the rectangular sealing cover 201 and sealing the second rectangular groove 103 with the rectangular sealing cover 201 is provided on one side of the rectangular sealing cover 201. A driving component for driving the movement of the first wedge block 207 is further provided on both sides of the blowout preventer housing 101. When the control component drives the rectangular sealing cover 201 to seal the second rectangular groove 103, the driving component can also synchronously drive the first wedge block 207 to seal the connecting block 203 in the fourth rectangular groove 105.

[0024] Specifically, the length and width of the second rectangular groove 103 are greater than the length and width of the first rectangular groove 102. The length and width of the rectangular sealing cover 201 are greater than the length and width of the first rectangular groove 102 and less than the length and width of the second rectangular groove 103. The length and width of the fourth rectangular groove 105 are greater than the length and width of the third rectangular groove 104. The length and width of the connecting block 203 are greater than the length and width of the third rectangular groove 104 and less than the length and width of the fourth rectangular groove 105.

[0025] Among them, the control component includes an annular plate 221 arranged on one side of the rectangular sealing cover 201. A threaded cylinder 229 is fixed inside the annular plate 221. One side of the rectangular sealing cover 201 is rotatably connected to a screw rod 235. A turntable 236 is fixed at one end of the screw rod 235 away from the rectangular sealing cover 201. The screw rod 235 is in threaded connection with the threaded cylinder 229. A plurality of positioning plates 219 are fixed on one side of the blowout preventer housing 101. Positioning holes 220 are formed in the positioning plates 219. A plurality of mounting plates 222 are fixed at equal intervals along the radial direction on the outer side of the annular plate 221. A third rectangular guide frame 223 is fixed on one side of the mounting plate 222. A clamping plate 224 is slidably connected inside the third rectangular guide frame 223. The clamping plate 224 can be embedded into the corresponding positioning hole 220. A connecting shaft 225 is fixed at one end of the clamping plate 224 close to the threaded cylinder 229. A convex block 226 is fixed on the mounting plate 222. The connecting shaft 225 penetrates through the convex block 226 and slides inside the convex block 226. A second elastic member 227 is sleeved on the outer side of the connecting shaft 225. One end of the second elastic member 227 abuts against the clamping plate 224, and the other end of the second elastic member 227 abuts against the convex block 226.

[0026] It should be noted that the second elastic member 227 can use devices such as springs. And in the normal state of the second elastic member 227, the distance between the mutually remote ends of two oppositely arranged clamping plates 224 is greater than the distance between two oppositely arranged positioning plates 219. That is, in the normal state of the second elastic member 227, the clamping plate 224 can be embedded into the corresponding positioning hole 220.

[0027] Furthermore, an annular groove 230 is formed on the outer side of the threaded cylinder 229. A driving disk 231 is arranged on the outer side of the threaded cylinder 229. A round hole 232 is formed in the driving disk 231. The diameter of the round hole 232 is greater than the diameter of the annular groove 230 and less than the diameter of the threaded cylinder 229. The round hole 232 of the driving disk 231 is rotatably fitted in the annular groove 230. A convex column 228 is fixed on the connecting shaft 225. A plurality of inclined grooves 233 are formed in the driving disk 231. The convex column 228 is slidably fitted in the corresponding inclined groove 233. A grip rod 234 is fixed on the driving disk 231.

[0028] In use, first move the cylinder body 106 so that the connecting block 203 is embedded in the fourth rectangular groove 105. Then rotate the grip rod 234 to drive the driving disc 231 to rotate. When the driving disc 231 rotates, it squeezes the convex column 228 through the inclined groove 233, causing the convex column 228 to move towards the threaded cylinder 229. When the convex column 228 moves, it drives the connecting shaft 225 to move. When the connecting shaft 225 moves, it drives the clamping plate 224 to move. When the mounting plate 222 moves towards the threaded cylinder 229, it compresses the second elastic member 227. Then move the rectangular sealing cover 201 so that it moves into the second rectangular groove 103. When the clamping plate 224 moves to the positioning hole 220, release the grip rod 234. At this time, under the resilience of the second elastic member 227, the clamping plate 224 is driven to move away from the threaded cylinder 229, causing the clamping plate 224 to be embedded in the positioning hole 220, that is, the position of the annular plate 221 is fixed. After that, rotate the screw rod 235 to drive the rectangular sealing cover 201 to move into the second rectangular groove 103, and then the second rectangular groove 103 can be sealed with the rectangular sealing cover 201.

[0029] In addition, a first connecting plate 208 is fixedly connected between two correspondingly arranged first rectangular plates 206, and a second connecting plate 214 is fixedly connected between two correspondingly arranged first rectangular guide frames 205. A plurality of second rectangular guide frames 209 are fixedly arranged on both sides of the blowout preventer housing 101. Two cylindrical rods 212 are fixedly arranged on one side of the second rectangular guide frame 209. One end of the cylindrical rod 212 far from the second rectangular guide frame 209 is fixedly connected to the second connecting plate 214. The cylindrical rod 212 penetrates through the first connecting plate 208, and the first connecting plate 208 is slidably matched with the outer side of the cylindrical rod 212. A first elastic member 213 is sleeved on the outer side of the cylindrical rod 212, and one end of the first elastic member 213 abuts against the first connecting plate 208, and the other end of the first elastic member 213 abuts against the second connecting plate 214.

[0030] It should be noted that the first elastic member 213 can use devices such as springs. And in the normal state of the first elastic member 213, the distance between the first wedge-shaped blocks 207 arranged corresponding to the upper and lower of the fourth rectangular groove 105 is greater than the height of the connecting block 203, that is, the connecting block 203 can pass through the corresponding first wedge-shaped blocks 207 and be embedded in the fourth rectangular groove 105.

[0031] In addition, the driving component includes a second rectangular plate 210 slidably fitted in a corresponding second rectangular guiding frame 209. A second wedge-shaped block 211 is fixed to one end of the second rectangular plate 210 extending into the second rectangular guiding frame 209. A plurality of U-shaped frames 215 are fixed to the rectangular sealing cover 201. A vertical rod 216 is jointly fixed to one ends of two correspondingly arranged U-shaped frames 215. A plurality of third rectangular plates 217 are fixed to the vertical rod 216. A third wedge-shaped block 218 is fixed to one end of the third rectangular plate 217 away from the vertical rod 216. The third wedge-shaped block 218 can squeeze the second wedge-shaped block 211 and drive the second wedge-shaped block 211 to move. The third rectangular plate 217 is slidably fitted in a corresponding second rectangular guiding frame 209.

[0032] During use, when the driving disc 231 is rotated to move the clamping plate 224 towards the threaded cylinder 229, the rectangular sealing cover 201 is moved towards the second rectangular groove 103. When the rectangular sealing cover 201 is moved, the third rectangular plate 217 and the third wedge-shaped block 218 are aligned with the corresponding second rectangular guiding frame 209, so that the third rectangular plate 217 and the third wedge-shaped block 218 are respectively embedded into the corresponding second rectangular guiding frame 209. Then, after the rectangular sealing cover 201 is moved a certain distance, the clamping plate 224 will move to be directly opposite to the positioning hole 220. When the clamping plate 224 is embedded into the corresponding positioning hole 220, that is, the position of the annular plate 221 is fixed. At this time, when the screw rod 235 is rotated, since the third rectangular plate 217 is embedded into the corresponding second rectangular guiding frame 209, the moving path of the rectangular sealing cover 201 is restricted. When the screw rod 235 is rotated, the rectangular sealing cover 201 directly moves into the second rectangular groove 103 without deviation. Moreover, when the rectangular sealing cover 201 moves, the U-shaped frame 215 also drives the third rectangular plate 217 and the third wedge block 218 to move within the corresponding second rectangular guiding frame 209. When the third wedge block 218 moves to squeeze the second wedge block 211, the second wedge block 211 will drive the second rectangular plate 210 to move when being squeezed. When the second rectangular plate 210 moves, it drives the first connecting plate 208 to move towards the connecting block 203. When the first connecting plate 208 moves, it drives the first rectangular plate 206 and the first wedge block 207 to move, so that the first wedge block 207 squeezes the connecting block 203 and squeezes the connecting block 203 into the fourth rectangular groove 105, thereby sealing the fourth rectangular groove 105 by the connecting block 203. It is worth mentioning that for the sealing of the second rectangular groove 103 and multiple fourth rectangular grooves 105, only the screw rod 235 needs to be rotated. When the screw rod 235 rotates, it drives the rectangular sealing cover 201 to seal the second rectangular groove 103. Moreover, when the rectangular sealing cover 201 moves, it drives the third rectangular plate 217 and the third wedge block 218 to move. By the third wedge block 218 squeezing the second wedge block 211, it drives the second wedge block 211, the second rectangular plate 210, the first connecting plate 208, the first rectangular plate 206, and the first wedge block 207 to move, so that when the first wedge block 207 squeezes the connecting block 203, the connecting block 203 seals the fourth rectangular groove 105. The operation is very convenient and fast, and there is no need to rotate multiple bolts for installation and disassembly.

[0033] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A modular quick-detachable blowout preventer for an offshore platform, characterized in that: include: The main unit (100) comprises a blowout preventer shell (101), a first rectangular groove (102) and a second rectangular groove (103) are provided on one side of the blowout preventer shell (101), and the first rectangular groove (102) and the second rectangular groove (103) are communicated with each other; a plurality of third rectangular grooves (104) are provided in the blowout preventer shell (101); a plurality of fourth rectangular grooves (105) are provided on both sides of the blowout preventer shell (101), and the plurality of fourth rectangular grooves (105) are respectively communicated with the corresponding third rectangular grooves (104); a plurality of cylinders (106) are provided on both sides of the blowout preventer shell (101), a hydraulic cylinder (107) is installed in the cylinder (106), a gate plate (108) is fixed to the extended end of the hydraulic cylinder (107), and the gate plate (108) is slidably fitted in the third rectangular groove (104); The sealing unit (200) comprises a rectangular sealing cover (201), a first sealing ring (202) is placed in the second rectangular groove (103), a second sealing ring (204) is placed in the fourth rectangular groove (105), a connecting block (203) is fixed to one end of the cylinder (106), and the connecting block (203) can be embedded in the fourth rectangular groove (105), a plurality of first rectangular guide frames (205) are arranged on both sides of the blowout preventer shell (101), and the plurality of first rectangular guide frames (205) are evenly distributed above and below the corresponding fourth rectangular groove (105), a first rectangular plate (206) is slidably connected in the first rectangular guide frame (205), and the first rectangular plate (206) is A first wedge block (207) is fixed at one end, and the first wedge block (207) can squeeze the connecting block (203) and seal the connecting block (203) in the fourth rectangular groove (105). A control component for controlling the movement of the rectangular sealing cover (201) and sealing the second rectangular groove (103) with the rectangular sealing cover (201) is provided on one side of the rectangular sealing cover (201). Drive components for driving the first wedge block (207) to move are also provided on both sides of the blowout preventer housing (101). When the control component drives the rectangular sealing cover (201) to seal the second rectangular groove (103), it can also synchronously drive the first wedge block (207) through the drive component to seal the connecting block (203) in the fourth rectangular groove (105).

2. A modular quick-detachable blowout preventer for an offshore platform according to claim 1, characterized in that: The length and width of the second rectangular groove (103) are greater than the length and width of the first rectangular groove (102); the length and width of the rectangular sealing cover (201) are greater than the length and width of the first rectangular groove (102), and smaller than the length and width of the second rectangular groove (103); the length and width of the fourth rectangular groove (105) are greater than the length and width of the third rectangular groove (104); and the length and width of the connecting block (203) are greater than the length and width of the third rectangular groove (104), and smaller than the length and width of the fourth rectangular groove (105).

3. A modular quick-detachable blowout preventer for an offshore platform according to claim 1, characterized in that: A first connecting plate (208) is fixed between two corresponding first rectangular plates (206), a second connecting plate (214) is fixed between two corresponding first rectangular guide frames (205), a plurality of second rectangular guide frames (209) are fixed on both sides of the blowout preventer housing (101), two cylindrical rods (212) are fixed on one side of the second rectangular guide frame (209), and one end of the cylindrical rod (212) away from the second rectangular guide frame (209) is fixed to the second connecting plate (214).

4. A modular quick-detachable blowout preventer for an offshore platform according to claim 3, characterized in that: The cylindrical rod (212) passes through the first connecting plate (208), the first connecting plate (208) is slidably fitted outside the cylindrical rod (212), a first elastic member (213) is sleeved on the outside of the cylindrical rod (212), one end of the first elastic member (213) abuts against the first connecting plate (208), and the other end of the first elastic member (213) abuts against the second connecting plate (214).

5. A modular quick-detachable blowout preventer for an offshore platform according to claim 4, characterized in that: The driving assembly comprises a second rectangular plate (210) slidably matched in a corresponding second rectangular guide frame (209); a second wedge block (211) is fixed to one end of the second rectangular plate (210) extending into the second rectangular guide frame (209); a plurality of U-shaped frames (215) are fixed on the rectangular sealing cover (201); a vertical rod (216) is commonly fixed to one end of two correspondingly arranged U-shaped frames (215); a plurality of third rectangular plates (217) are fixed on the vertical rod (216); a third wedge block (218) is fixed to one end of the third rectangular plate (217) away from the vertical rod (216); the third wedge block (218) is capable of squeezing the second wedge block (211) and driving the second wedge block (211) to move; and the third rectangular plate (217) is slidably matched in the corresponding second rectangular guide frame (209).

6. The modular quick-detachable blowout preventer for offshore platforms according to claim 1, characterized in that: The control assembly comprises an annular plate (221) arranged on one side of a rectangular sealing cover (201), a threaded barrel (229) being fixed in the annular plate (221), a screw rod (235) being rotatably connected to one side of the rectangular sealing cover (201), a rotating disk (236) being fixed to one end of the screw rod (235) away from the rectangular sealing cover (201), and the screw rod (235) and the threaded barrel (229) being threadedly connected.

7. A modular quick-detachable blowout preventer for an offshore platform according to claim 6, characterized in that: A plurality of positioning plates (219) are fixed to one side of the blowout preventer housing (101), and positioning holes (220) are provided in the positioning plates (219). A plurality of mounting plates (222) are fixed to the outer side of the annular plate (221) at equal intervals in the radial direction thereof, and a third rectangular guide frame (223) is fixed to one side of the mounting plate (222). A clamping plate (224) is slidably connected to the inside of the third rectangular guide frame (223), and the clamping plate (224) can be embedded in the corresponding positioning holes (220).

8. The modular quick-detachable blowout preventer for offshore platforms according to claim 7, characterized in that: A connecting shaft (225) is fixed to one end of the clamping plate (224) close to the threaded tube (229), a protrusion (226) is fixed to the mounting plate (222), the connecting shaft (225) passes through the protrusion (226) and slides inside the protrusion (226), a second elastic member (227) is sleeved on the outer side of the connecting shaft (225), one end of the second elastic member (227) abuts against the clamping plate (224), and the other end of the second elastic member (227) abuts against the protrusion (226).

9. A modular quick-detachable blowout preventer for an offshore platform according to claim 8, characterized in that: An annular groove (230) is provided on the outside of the threaded barrel (229), a driving disc (231) is provided on the outside of the threaded barrel (229), a circular hole (232) is provided in the driving disc (231), the diameter of the circular hole (232) is larger than the diameter of the annular groove (230) and smaller than the diameter of the threaded barrel (229), and the circular hole (232) of the driving disc (231) is rotatably fitted in the annular groove (230).

10. A modular quick-detachable blowout preventer for an offshore platform according to claim 9, characterized in that: A boss (228) is fixed on the connecting shaft (225), a plurality of inclined grooves (233) are provided in the driving disk (231), the boss (228) is slidably engaged in the corresponding inclined grooves (233), and a grip rod (234) is fixed on the driving disk (231).

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