A safety switch mechanism for a blowout preventer for oil drilling

Abstract

The present invention discloses a safety switch mechanism for a blowout preventer for oil drilling, comprising: a fixed shell, the upper and lower ends of the fixed shell are fixedly connected with mounting tubes, and the fixed shell is communicated with the interior of each mounting tube, a fixed cavity is provided inside the fixed shell, and a sealing plate is slidably connected to the inner side of each fixed cavity, and each sealing plate passes through the inner side wall of the corresponding fixed cavity and extends to the inner side of the fixed shell. The advantages are: when the sealing plate moves to close, the connecting plate and the connecting block move together, so that the connecting block is clamped together, and the sealing plate is further fixed, and at the same time, the strength of the connection of the sealing plate is improved, and the impact resistance of the sealing plate is enhanced. At the same time, a rotating disk is provided, and the sealing plate can be manually closed when the motor is damaged, so as to avoid the blowout preventer from being unusable, which is beneficial to the practical application of the device.

Description

Technical Field

[0001] The invention relates to the technical field of oil production equipment, in particular to a blowout preventer safety switch mechanism for oil drilling. Background Art

[0002] During the oil extraction process, due to the difference in underground oil pressure, oil overflow or even gushing may occur sometimes. In order to prevent oil from gushing out, a blowout preventer safety switch mechanism for oil drilling is needed to seal the oil pipeline.

[0003] When the existing safety switch mechanism of the blowout preventer for oil drilling is in use, the device is sealed by closing the sealing plates, and there is a lack of fixing structure between the sealing plates, which makes the sealing plates easily damaged when impacted by oil, causing some oil to overflow. At the same time, the existing device generally controls the sealing plates through motors, but the construction environment is relatively complex, and sometimes motor failures occur. At this time, the blowout preventer cannot be used, which is not conducive to the application of the device. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a safety switch mechanism for a blowout preventer for oil drilling.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A safety switch mechanism for a blowout preventer for oil drilling comprises: a fixed shell, wherein the upper and lower ends of the fixed shell are fixedly connected with mounting tubes, and the fixed shell is communicated with the interior of each mounting tube, a fixed cavity is provided inside the fixed shell, and a sealing plate is slidably connected to the inner side of each fixed cavity, and each sealing plate respectively penetrates the inner side wall of the corresponding fixed cavity and extends to the inner side of the fixed shell; a moving structure, wherein a moving cavity is provided at the rear side of the fixed cavity, and a corresponding moving groove is provided between the moving cavity and each fixed cavity, a fixed shaft is rotatably connected between the inner walls of the moving cavity, a moving sleeve is threadedly sleeved on the fixed shaft, and the threads at the two moving sleeves are oppositely arranged, a moving block is fixedly connected to the moving sleeve, the moving blocks are respectively slidably connected to the inner walls of the corresponding moving cavity, and the moving sleeve is fixedly connected to the corresponding sealing plate, an adjusting structure is provided on the fixed shell, and a fixed structure is provided on the sealing plate.

[0007] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the fixed structure includes an adjustment cavity opened inside each sealing plate, a group of adjustment plates are slidably connected inside each of the adjustment cavities, one end of the adjustment plate close to the fixed shell is fixedly connected to a connecting plate, a moving opening corresponding to the connecting plate is opened on the inner side wall of the adjustment cavity, and the connecting plate is extended to the inner side of the corresponding moving opening, each end away from the corresponding adjustment plate is fixedly connected to a connecting block, and the connecting blocks are meshed, a connecting groove is opened on the side wall of the corresponding adjustment plate, a connecting shaft is installed inside the connecting groove, and both ends of each connecting shaft are rotatably connected to A sliding block, a sliding groove corresponding to each sliding block is opened on the inner wall of the connecting groove, and each sliding block is slidably connected to the corresponding sliding groove, a connecting sleeve rod is installed between the corresponding sliding blocks, and the two ends of the connecting sleeve rod are respectively rotatably sleeved on the outer side of the corresponding connecting shaft, and the front and rear ends of the connecting sleeve rod are fixedly connected with an adjusting shaft, and the end of the adjusting shaft away from the connecting sleeve rod is rotated and connected to the inner wall of the corresponding adjusting cavity, a connecting through groove is opened on the lower inner wall of the adjusting cavity, and the connecting through groove penetrates the inner side wall of the adjusting cavity, and the bottom end of the adjusting plate away from the connecting plate is fixedly connected with an adjusting block, and the adjusting block passes through the connecting through groove and extends to the inner side of the fixed cavity.

[0008] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: a connecting spring is fixedly connected to the side wall of the adjusting plate connected to the adjusting block, and the end of the connecting spring away from the adjusting plate is fixedly connected to the inner wall of the corresponding adjusting cavity, and a sealing layer is provided at the connection between the fixed cavity and the sealing plate and at the connection between the sealing plate and the connecting plate.

[0009] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the adjustment structure includes a protective shell fixedly connected to a side wall of a fixed shell, the end of the fixed shaft close to the protective shell passes through the inner wall of the movable cavity and extends to the inner side of the protective shell, a motor is fixedly connected to the side wall of the fixed shell, the motor is located on the inner side of the protective shell, a rotating rod is fixedly connected to the output end of the motor, and rotating wheels are fixedly sleeved on the rotating rod and the fixed shaft, and the rotating wheels are interconnected by a transmission belt.

[0010] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the end of the fixed shaft away from the fixed shell passes through the protective shell and extends to the outside of the protective shell, and the end of the fixed shaft located on the outside of the protective shell is fixedly connected to a rotating disk, and the side wall of the rotating disk is provided with anti-slip grooves.

[0011] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: a fixing flange is fixedly installed at one end of each mounting pipe away from the fixed housing.

[0012] The advantages of the present invention are that when the sealing plate moves to close, the connecting plate and the connecting block move together, so that the connecting block is locked together, and the sealing plate is further fixed. At the same time, the strength of the connection of the sealing plate is improved, and the impact resistance of the sealing plate is enhanced. At the same time, a rotating disk is provided, and the sealing plate can be manually closed when the motor is damaged, so as to avoid the blowout prevention device from being unusable, which is beneficial to the practical application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a skewed three-dimensional structural schematic diagram of a safety switch mechanism of a blowout preventer for oil drilling proposed by the present invention;

[0014] Figure 2 A schematic cross-sectional perspective structural diagram of a safety switch mechanism for a blowout preventer for oil drilling proposed by the present invention;

[0015] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0016] Figure 4 The present invention is a schematic diagram of a cross-sectional three-dimensional structure of a moving cavity of a safety switch mechanism of a blowout preventer for oil drilling.

[0017] In the figure: 1 mounting tube, 2 fixed shell, 3 fixed cavity, 4 protective shell, 5 motor, 6 rotating rod, 7 fixed shaft, 8 rotating disk, 9 rotating wheel, 10 driving belt, 11 sealing plate, 12 adjusting cavity, 13 adjusting plate, 14 connecting plate, 15 connecting block, 16 connecting groove, 17 connecting shaft, 18 sliding block, 19 sliding groove, 20 connecting sleeve rod, 21 adjusting shaft, 22 connecting spring, 23 connecting through groove, 24 adjusting block, 25 moving cavity, 26 moving sleeve. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Reference Figure 1-Figure 4As shown, a safety switch mechanism for a blowout preventer for oil drilling comprises: a fixed shell 2, wherein the upper and lower ends of the fixed shell 2 are fixedly connected with mounting tubes 1, and the fixed shell 2 is communicated with the interior of each mounting tube 1, and a fixed cavity 3 is provided inside the fixed shell 2, and a sealing plate 11 is slidably connected to the inner side of each fixed cavity 3, and each sealing plate 11 passes through the inner side wall of the corresponding fixed cavity 3 and extends to the inner side of the fixed shell 2, and the sealing plate 11 moves to seal the fixed shell 2, thereby preventing oil from overflowing; a moving structure, wherein a moving cavity 25 is provided at the rear side of the fixed cavity 3, and a corresponding moving groove is provided between the moving cavity 25 and each fixed cavity 3, and a fixed shaft 7 is rotatably connected between the inner walls of the moving cavity 25, and the fixed shaft 7 is provided on the fixed shaft 7 The threaded sleeve is provided with a moving sleeve 26, and the threads at the two moving sleeves 26 are arranged oppositely, and a moving block is fixedly connected to the moving sleeve 26, and the moving blocks are respectively slidably connected to the inner walls of the corresponding moving chambers 25, and the moving sleeve 26 is fixedly connected to the corresponding sealing plate 11, and an adjustment structure is provided on the fixed shell 2, and a fixing structure is provided on the sealing plate 11, so that the fixed shaft 7 rotates. Since the moving sleeve 26 cannot rotate under the action of the moving block, the rotation of the fixed shaft 7 under the action of the thread will cause the two moving sleeves 26 to move, and the directions of movement of the two moving sleeves 26 are opposite, so that the moving sleeves 26 move synchronously towards each other, and the movement of the moving sleeve 26 will drive the sealing plate 11 to move together, thereby controlling the closing and opening of the sealing plate 11;The fixed structure includes an adjustment cavity 12 opened inside each sealing plate 11, and a group of adjustment plates 13 are slidably connected inside each adjustment cavity 12. One end of the adjustment plate 13 close to the inside of the fixed shell 2 is fixedly connected to a connecting plate 14. A moving opening corresponding to the connecting plate 14 is opened on the inner side wall of the adjustment cavity 12, and the connecting plate 14 extends to the inner side of the corresponding moving opening. Each end away from the corresponding adjustment plate 13 is fixedly connected to a connecting block 15, and the connecting blocks 15 are meshed. A connecting groove 16 is opened on the side wall of the corresponding adjustment plate 13, and a connecting shaft 17 is installed inside the connecting groove 16. Both ends of each connecting shaft 17 The connecting groove 16 is provided with a sliding block 18, and the inner wall of the connecting groove 16 is provided with a sliding groove 19 corresponding to each sliding block 18, and each sliding block 18 is slidably connected with the corresponding sliding groove 19, and a connecting sleeve rod 20 is installed between the corresponding sliding blocks 18, and the two ends of the connecting sleeve rod 20 are respectively rotatably sleeved on the outer side of the corresponding connecting shaft 17, and the front and rear ends of the connecting sleeve rod 20 are fixedly connected with an adjusting shaft 21, and the end of the adjusting shaft 21 away from the connecting sleeve rod 20 is rotated to be connected to the inner wall of the corresponding adjusting cavity 12, and a connecting through groove 23 is provided on the lower inner wall of the adjusting cavity 12, and the connecting through groove 23 runs through the inner wall of the adjusting cavity 12, away from The bottom end of the adjusting plate 13 of the connecting plate 14 is fixedly connected with an adjusting block 24, which passes through the connecting groove 23 and extends to the inner side of the fixed cavity 3. When the sealing plate 11 is closed, it moves toward the inner side of the fixed shell 2. As the sealing plate 11 moves, the adjusting block 24 and the inner wall of the fixed cavity 3 are pressed against each other, so that the adjusting block 24 is fixed. When the adjusting block 24 moves, the corresponding adjusting plate 13 is fixed differently, so that the adjusting plate 13 moves toward the outer side of the fixed shell 2 relative to the corresponding sealing plate 11, so that the connecting sleeve rod 20 rotates with the adjusting shaft 21 as the center, thereby pushing the other adjusting plate 13 to move toward the inner side of the fixed shell 2 relative to the sealing plate 11. , so that the connecting plate 14 and the connecting block 15 move together, so that the connecting block 15 is snapped together, so that the sealing plate 11 is further fixed after closing, and its ability to resist the impact of oil is improved; the side wall of the adjusting plate 13 connected to the adjusting block 24 is fixedly connected with a connecting spring 22, and the end of the connecting spring 22 away from the adjusting plate 13 is fixedly connected to the inner wall of the corresponding adjusting cavity 12, and the connection between the fixed cavity 3 and the sealing plate 11 and the connection between the sealing plate 101 and the connecting plate 14 are both provided with a sealing layer, and the elastic force of the connecting spring 22 can assist the corresponding adjusting plate 13 to return to its original position, and the sealing layer can prevent oil from flowing into the inner side of the adjusting cavity 12;The adjustment structure includes a protective shell 4 fixedly connected to a side wall of a fixed shell 2, an end of a fixed shaft 7 close to the protective shell 4 penetrates the inner wall of the moving cavity 25 and extends to the inner side of the protective shell 4, a motor 5 is fixedly connected to the side wall of the fixed shell 2, the motor 5 is located on the inner side of the protective shell 4, a rotating rod 6 is fixedly connected to the output end of the motor 5, a rotating wheel 9 is fixedly sleeved on the rotating rod 6 and the fixed shaft 7, and the rotating wheels 9 are connected to each other through a transmission belt 10. After the motor 5 is started, its output end drives the rotating rod 6 to rotate, and under the action of the rotating wheel 9 and the transmission belt 10, the fixed shaft 7 rotates accordingly; an end of the fixed shaft 7 away from the fixed shell 2 penetrates the protective shell 4 and extends to the outer side of the protective shell 4, and an end of the fixed shaft 7 located on the outer side of the protective shell 4 is fixedly connected to a rotating disk 8, and the side wall of the rotating disk 8 is provided with anti-slip grooves. Rotating the rotating disk 8 can rotate the fixed shaft 7, so that an emergency switch is performed when the motor 5 fails. ;

[0020] A fixing flange is fixedly mounted on one end of each mounting pipe 1 away from the fixed housing 2 to facilitate connection of the device with equipment such as pipelines.

[0021] When the present invention is used, if oil overflows and sprays out, the motor 5 is started. After the motor 5 is started, its output end drives the rotating rod 6 to rotate. Under the action of the rotating wheel 9 and the transmission belt 10, the fixed shaft 7 rotates accordingly. When the fixed shaft 7 rotates, since the movable sleeve 26 cannot rotate under the action of the movable block, the rotation of the fixed shaft 7 will cause the two movable sleeves 26 to move under the action of the thread, and the two movable sleeves 26 move in opposite directions, so that the movable sleeves 26 move synchronously towards each other. The movement of the movable sleeve 26 will drive the sealing plate 11 to move together, thereby controlling the sealing plate 11 to close and seal the fixed housing 2 to prevent oil from spraying out. At the same time, when the sealing plate 11 is closed, it moves toward the inner side of the fixed housing 2. As the sealing plate 11 moves, the adjusting block 24 and the inner wall of the fixed cavity 3 are squeezed, thereby The adjusting block 24 is fixed, and when the adjusting block 24 moves, the corresponding adjusting plate 13 is fixed differently, so that the adjusting plate 13 moves toward the outside of the fixed housing 2 relative to the corresponding sealing plate 11. At this time, the connecting spring 22 is deformed, so that the connecting sleeve rod 20 rotates with the adjusting shaft 21 as the center, thereby pushing the other adjusting plate 13 to move toward the inside of the fixed housing 2 relative to the sealing plate 11, so that the connecting plate 14 and the connecting block 15 move together, and the connecting block 15 is engaged together, so that the sealing plate 11 is further fixed after closing, and its ability to resist the impact force of oil is improved. In the process of opening the sealing plate 11, the elastic force of the connecting spring 22 can assist the corresponding adjusting plate 13 to return to its original position. In addition, manually rotating the rotating disk 8 can rotate the fixed shaft 7, thereby performing an emergency switch when the motor 5 fails.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safety switch mechanism for a blowout preventer for oil drilling, characterized in that: include: A fixed shell (2), wherein the upper and lower ends of the fixed shell (2) are fixedly connected to the mounting tubes (1), and the fixed shell (2) is communicated with the interior of each mounting tube (1), and a fixed cavity (3) is provided inside the fixed shell (2), and the inner side of each fixed cavity (3) is slidably connected to a sealing plate (11), and each sealing plate (11) passes through the inner side wall of the corresponding fixed cavity (3) and extends to the inner side of the fixed shell (2); a movable structure, wherein a movable cavity (25) is provided on the rear side of the fixed cavity (3), and the movable cavity (25) is connected to each Corresponding moving grooves are provided between the fixed cavities (3); a fixed shaft (7) is rotatably connected between the inner walls of the moving cavities (25); a moving sleeve (26) is threadedly sleeved on the fixed shaft (7); and the threads of the two moving sleeves (26) are arranged oppositely; a moving block is fixedly connected to the moving sleeve (26); the moving blocks are respectively slidably connected to the inner walls of the corresponding moving cavities (25); and the moving sleeve (26) is fixedly connected to the corresponding sealing plate (11); an adjusting structure is provided on the fixed housing (2); and a fixing structure is provided on the sealing plate (11);The fixed structure comprises an adjustment cavity (12) formed inside each sealing plate (11), a group of adjustment plates (13) being slidably connected inside each adjustment cavity (12), one end of the adjustment plate (13) close to the inside of the fixed housing (2) being fixedly connected to a connecting plate (14), a movable opening corresponding to the connecting plate (14) being formed on the inner side wall of the adjustment cavity (12), and the connecting plate (14) extending to the inner side of the corresponding movable opening, and one end of each connecting plate (14) away from the corresponding adjustment plate (13) being fixedly connected to There are connecting blocks (15), and the connecting blocks (15) are meshed with each other. The side walls of the corresponding adjustment plates (13) are provided with connecting grooves (16). The connecting grooves (16) are provided with connecting shafts (17). Both ends of each connecting shaft (17) are rotatably connected with sliding blocks (18). The inner wall of the connecting groove (16) is provided with sliding grooves (19) corresponding to each sliding block (18). Each sliding block (18) is slidably connected to the corresponding sliding groove (19). A connecting sleeve rod (20) is installed between the connecting plates (14) and the connecting sleeve rod (20), and the two ends of the connecting sleeve rod (20) are respectively rotatably sleeved on the outer sides of the corresponding connecting shafts (17). The front and rear ends of the connecting sleeve rod (20) are fixedly connected to adjustment shafts (21). The end of the adjustment shaft (21) away from the connecting sleeve rod (20) is rotatably connected to the inner wall of the corresponding adjustment cavity (12). A connecting through groove (23) is provided on the lower inner wall of the adjustment cavity (12). The connecting through groove (23) penetrates the inner side wall of the adjustment cavity (12). The end of the adjustment shaft (21) away from the connecting plate (14) is connected to the inner side wall of the adjustment cavity (12). The bottom end of the section plate (13) is fixedly connected to an adjustment block (24), and the adjustment block (24) passes through the connection slot (23) and extends to the inner side of the fixed cavity (3); a connection spring (22) is fixedly connected to the side wall of the adjustment plate (13) connected to the adjustment block (24), and one end of the connection spring (22) away from the adjustment plate (13) is fixedly connected to the inner wall of the corresponding adjustment cavity (12), and a sealing layer is provided at the connection between the fixed cavity (3) and the sealing plate (11) and at the connection between the sealing plate (11) and the connection plate (14). ; 2. A safety switch mechanism for a blowout preventer for oil drilling according to claim 1, characterized in that: The adjustment structure comprises a protective shell (4) fixedly connected to a side wall of a fixed shell (2); an end of the fixed shaft (7) close to the protective shell (4) penetrates the inner wall of the movable cavity (25) and extends to the inner side of the protective shell (4); a motor (5) is fixedly connected to the side wall of the fixed shell (2); the motor (5) is located on the inner side of the protective shell (4); a rotating rod (6) is fixedly connected to the output end of the motor (5); a rotating wheel (9) is fixedly sleeved on both the rotating rod (6) and the fixed shaft (7); and the rotating wheels (9) are connected to each other via a transmission belt (10).

3. A safety switch mechanism for a blowout preventer for oil drilling according to claim 2, characterized in that: One end of the fixed shaft (7) away from the fixed housing (2) penetrates the protective housing (4) and extends to the outside of the protective housing (4), and one end of the fixed shaft (7) located outside the protective housing (4) is fixedly connected to a rotating disk (8), and a side wall of the rotating disk (8) is provided with anti-slip grooves.

4. A safety switch mechanism for a blowout preventer for oil drilling according to claim 1, characterized in that: A fixing flange is fixedly mounted on one end of each mounting pipe (1) away from the fixed housing (2).

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