A detachable distributor for blowout preventers

Abstract

This invention relates to the field of wellhead diversion, and more particularly to a detachable diverter for blowout preventers, comprising a housing assembly and an inner housing assembly inserted inside the housing assembly. A positioning protrusion is coaxially fitted on the upper part of the outer surface of the housing assembly. Four square shells are fixedly mounted in a circular array on the upper part of the outer surface of the housing assembly. The protruding portion of the positioning protrusion penetrates the interior of the square shell, and the positioning protrusion is elastically connected to the square shell. One end of each square shell penetrates the interior of the housing assembly, and one end of the square shell is coplanar with the inner surface of the housing assembly. A positioning block is provided through one end of the square shell. A positioning frame is connected between the positioning block and the protruding portion of the positioning protrusion. A positioning ring groove is formed on the upper part of the outer surface of the inner housing assembly, and the positioning block is inserted into the positioning ring groove. This invention facilitates maintenance and ensures the stable assembly of the housing assembly and the inner housing assembly.

Description

Technical Field

[0001] This invention relates to the field of wellhead diversion, and more particularly to a detachable diverter for blowout preventers. Background Technology

[0002] The flow divider is mainly composed of components such as the outer shell assembly and the inner shell assembly. It features high-precision flow ratio and low pressure loss transmission, and can realize balanced scheduling and energy consumption optimization of multi-channel media. It is a core fluid control component that helps the mining, energy and other fields achieve deep integration of efficient operation and low-carbon mining.

[0003] However, existing splitters generally use fixed assembly processes such as embedding to assemble the outer shell assembly and the inner shell assembly. The product structure formed by this type of assembly scheme makes it difficult to separate the outer shell assembly and the inner shell assembly during the actual use period. The difficulty in separating the two directly leads to the problem of difficulty in maintaining them, making maintenance inconvenient. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a detachable diverter for blowout preventers.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a detachable diverter for a blowout preventer, comprising a housing assembly and an inner housing assembly inserted inside the housing assembly. A positioning protrusion ring is coaxially sleeved on the upper part of the outer surface of the housing assembly. Four square shells are fixedly installed in a circular array on the upper part of the outer surface of the housing assembly. The protruding part of the positioning protrusion ring penetrates the interior of the square shell. The positioning protrusion ring is elastically connected to the square shell. One end of the square shell penetrates the interior of the housing assembly. One end of the square shell is coplanar with the inner surface of the housing assembly. A positioning block is provided through one end of the square shell. A positioning frame is connected between the positioning block and the protruding part of the positioning protrusion ring. A positioning ring groove is formed on the upper part of the outer surface of the inner housing assembly. The positioning block is inserted into the interior of the positioning ring groove. A hydraulic component for pushing the positioning protrusion ring to rotate is provided on one of the square shells.

[0006] Preferably, the outer surface of the protruding part of the positioning ring extends into a protruding block, a return spring is fixedly installed on the side of the protruding block, the end of the return spring is fixed to the inner wall of the square shell, and a limiting ear extends from the upper edge of the inner shell assembly, the limiting ear pressing against the upper end of the outer shell assembly.

[0007] Preferably, square holes are provided on both sides of the square shell, the positioning protrusion passes through the inside of the square holes, and a sliding hole is provided at one end of the square shell, with the positioning block slidably installed inside the sliding hole.

[0008] Preferably, the upper and lower end faces of the positioning protrusion ring are provided with a plurality of sliding grooves in an annular array, and a sliding claw is slidably installed inside the sliding groove. The sliding claw extends out from the inside of the sliding groove, and the end of the sliding claw is fixed to the housing assembly.

[0009] Preferably, the positioning block has a lug extending from its center, and the inner surface of the protruding part of the positioning ring has an annular lug extending from it. Both the end of the lug and the end of the annular lug are rotatably mounted with connecting shafts, and the two ends of the positioning frame are respectively fixed to the outer surfaces of the two connecting shafts.

[0010] Preferably, the hydraulic component includes a cylinder, a piston is slidably mounted inside the cylinder, a round-headed push pin extends from the middle of the side of the piston, the round-headed push pin extends through one end of the cylinder, the round-headed push pin slides into the cylinder, the round end of the round-headed push pin abuts against the protrusion of the positioning ring, the other end of the cylinder is fixedly connected to an oil pipe threaded joint, a cylinder frame extends from the outer surface of the cylinder, and the end of the cylinder frame is fixed to one of the square shells.

[0011] Preferably, the upper end of the round-headed push column extends into a curved frame, and a circular shell is fixedly installed at the end of the curved frame. A lifting block is elastically installed inside the circular shell, and the lifting block extends through the upper and lower ends of the circular shell. An anti-loosening top block is fixedly installed at the lower end of the lifting block. A notch is opened at the upper edge of the cylinder frame, and the anti-loosening top block is pressed against the vertical surface of the notch.

[0012] Preferably, a lifting handle is fixedly installed at the upper end of the lifting block column, and a pressure cap is coaxially fixedly installed on the outer surface of the lifting block column. The pressure cap is slidably installed inside the circular shell. A compression spring is wound around the outer side of the lifting block column. The two ends of the compression spring are respectively fixed to the upper end of the pressure cap and the upper end of the inner surface of the circular shell. Two limiting grooves are symmetrically opened on the outer surface of the pressure cap, and two limiting protrusions extend symmetrically from the inner surface of the circular shell. The limiting protrusions slide through the interior of the limiting grooves.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Under hydraulic pressure, the positioning cam ring rotates, which in turn moves the positioning frame to push the positioning blocks. This allows the four positioning blocks to extend synchronously from the square shell and insert into the positioning ring grooves on the inner shell assembly, thus fixing the inner shell assembly to the outer shell assembly. Conversely, when the hydraulic drive is lost, the positioning cam ring will reverse and reset under the action of elasticity, which in turn moves the positioning frame to drive the positioning blocks out of the positioning ring grooves and retract into the square shell, thus loosening the inner shell assembly and allowing it to be pulled out of the outer shell assembly. This allows for quick assembly and disassembly of the outer shell assembly and the inner shell assembly, facilitating the insertion and removal of the inner shell assembly from the outer shell assembly for maintenance.

[0015] 2. When hydraulic oil enters the cylinder to push the piston, which in turn drives the round-headed push pin to push the positioning convex ring, the anti-loosening top block will move synchronously with the round-headed push pin and slide on the cylinder frame. After the round-headed push pin pushes the positioning convex ring, the positioning block is inserted into the positioning ring groove, and the inner shell assembly is fixed. Then, the anti-loosening top block slides to the notch on the cylinder frame. Subsequently, the anti-loosening top block moves down under the push of the compression spring, so that the anti-loosening top block extends into the notch and abuts against the vertical surface of the notch to lock the round-headed push pin, and then lock the rotating positioning convex ring, so that the positioning block is firmly inserted into the positioning ring groove. This prevents the positioning block from loosening due to pressure fluctuations in the hydraulic system after fixing, which would cause the inner shell assembly to loosen. This ensures the stable assembly of the outer shell assembly and the inner shell assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a detachable diverter for a blowout preventer according to the present invention;

[0017] Figure 2 This is another schematic diagram of a detachable diverter for a blowout preventer according to the present invention.

[0018] Figure 3 This is a schematic diagram of the square shell portion of a detachable diverter for a blowout preventer according to the present invention;

[0019] Figure 4 This is a cross-sectional view showing the connection between the outer shell assembly and the inner shell assembly of a detachable distributor for a blowout preventer according to the present invention.

[0020] Figure 5 This is an internal view of the square shell of a detachable diverter for a blowout preventer according to the present invention;

[0021] Figure 6 This is a schematic diagram of a positioning protrusion ring for a detachable diverter for a blowout preventer according to the present invention;

[0022] Figure 7 This is an internal view of the hydraulic cylinder of a detachable distributor for a blowout preventer according to the present invention.

[0023] Figure 8 This is an internal view of the circular housing of a detachable diverter for a blowout preventer according to the present invention;

[0024] Figure 9 This invention relates to a detachable diverter for blowout preventers. Figure 8 A magnified view of A in the middle.

[0025] In the diagram: 1. Outer shell assembly; 2. Inner shell assembly; 3. Square shell; 4. Limiting lug; 5. Hydraulic cylinder; 6. Cylinder frame; 7. Round-headed push post; 8. Positioning convex ring; 9. Sliding groove; 10. Sliding claw; 11. Return spring; 12. Extending block; 13. Ring lug; 14. Positioning frame; 15. Block lug; 16. Positioning block; 17. Positioning ring groove; 18. Piston; 19. Bend frame; 20. Anti-loosening top block; 21. Circular shell; 22. Notch; 23. Lifting block post; 24. Pressure cap; 25. Compression spring; 26. Lifting handle; 27. Limiting groove; 28. Limiting ridge; 29. ​​Square hole; 30. Sliding hole; 31. Connecting shaft; 32. Oil pipe threaded joint. Detailed Implementation

[0026] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0027] like Figures 1-9The illustrated disassembled diverter for a blowout preventer includes a housing assembly 1 and an inner housing assembly 2 inserted inside the housing assembly 1. A positioning protrusion ring 8 is coaxially sleeved on the upper part of the outer surface of the housing assembly 1. Four square shells 3 are fixedly mounted in a circular array on the upper part of the outer surface of the housing assembly 1, serving as a protective cover. The protruding part of the positioning protrusion ring 8 penetrates the interior of the square shell 3, and the positioning protrusion ring 8 is elastically connected to the square shell 3. One end of the square shell 3 penetrates the interior of the housing assembly 1, and one end of the square shell 3 is coplanar with the inner surface of the housing assembly 1, ensuring that the inner housing assembly 2 is not obstructed when inserted or removed from the housing assembly 1. A positioning block 16 is provided through one end of the square shell 3, and a positioning frame 14 is connected between the positioning block 16 and the protruding part of the positioning protrusion ring 8. A positioning ring groove 17 is formed on the upper part of the outer surface of the inner housing assembly 2, and the positioning block 16 is inserted into the positioning ring groove 17. On the one hand, the four positioning blocks 16 can be used to clamp and fix the inner housing assembly 2; on the other hand, the positioning blocks 16 and the positioning ring 8 can be used to clamp and fix the inner housing assembly 2. The insertion of the annular groove 17 strengthens the restriction on the upper and lower positions of the inner shell assembly 2, preventing it from moving up and down. This secures the inner shell assembly 2 within the outer shell assembly 1. One of the square shells 3 is equipped with a hydraulic component that pushes the positioning protrusion 8 to rotate. Driven by hydraulic pressure, the positioning protrusion 8 rotates, thereby moving the positioning frame 14 to push the positioning blocks 16. This allows all four positioning blocks 16 to extend synchronously from the square shell 3 and insert into the positioning annular groove 1 on the inner shell assembly 2. 7. The inner shell assembly 2 is fixed inside the outer shell assembly 1. Conversely, when the hydraulic drive is lost, the positioning protrusion 8 will reverse and reset under the action of the elastic force, thereby driving the positioning frame 14 to move, so as to drive the positioning block 16 to be pulled out from the positioning ring groove 17 and retracted into the square shell 3, so as to loosen the inner shell assembly 2 and pull it out from the outer shell assembly 1. This allows the outer shell assembly 1 and the inner shell assembly 2 to be quickly disassembled and assembled, so as to facilitate the insertion and removal of the inner shell assembly 2 from the outer shell assembly 1 for maintenance.

[0028] The outer surface of the protruding part of the positioning protrusion ring 8 extends with a protruding block 12. A return spring 11 is fixedly installed on the side of the protruding block 12. The protruding block 12 serves to connect the return spring 11. The end of the return spring 11 is fixed to the inner wall of the square shell 3. The positioning protrusion ring 8 can reverse and reset under the elastic force of the return spring 11. A limiting ear 4 extends from the upper edge of the inner shell assembly 2. The limiting ear 4 presses against the upper end of the outer shell assembly 1. The limiting ear 4 on the inner shell assembly 2 presses against the outer shell assembly 1, which can limit the positioning and make the positioning ring groove 17 on the inner shell assembly 2 and the positioning block 16 flush, so that the positioning block 16 can be smoothly clamped and inserted into the positioning ring groove 17.

[0029] Square holes 29 are provided on both sides of the square shell 3. The positioning protrusion 8 passes through the inside of the square hole 29. The square hole 29 allows the positioning protrusion 8 to pass smoothly through the square shell 3. A sliding hole 30 is provided at one end of the square shell 3. The positioning block 16 is slidably installed inside the sliding hole 30. The sliding hole 30 serves to guide the positioning block 16.

[0030] The upper and lower end faces of the positioning protrusion ring 8 are provided with multiple sliding grooves 9 in a circular array. Sliding claws 10 are slidably installed inside the sliding grooves 9. The sliding claws 10 extend out from the inside of the sliding grooves 9. The sliding grooves 9 and sliding claws 10 serve to guide the rotating positioning protrusion ring 8. The end of the sliding claws 10 is fixed to the outer shell assembly 1.

[0031] The positioning block 16 has a lug 15 extending from its center, and the inner surface of the protruding part of the positioning ring 8 has an annular lug 13 extending from it. The ends of the lug 15 and the annular lug 13 are both rotatably mounted with a connecting shaft 31. The lug 15 and the annular lug 13 serve to support the connecting shaft 31. The two ends of the positioning frame 14 are respectively fixed to the outer surfaces of the two connecting shafts 31. The connecting shafts 31 serve to facilitate the connection of the positioning frame 14, the positioning block 16, and the positioning ring 8 together.

[0032] The hydraulic components include a cylinder 5, inside which a piston 18 is slidably mounted. The cylinder 5 serves to contain hydraulic oil. A round-headed push pin 7 extends from the middle of the side of the piston 18, passing through one end of the cylinder 5. The round-headed push pin 7 is slidably engaged with the cylinder 5. The round end of the push pin 7 presses against the protrusion of the positioning ring 8. Driven by the piston 18, the push pin 7 can push the protrusion of the positioning ring 8 from the side, causing the positioning ring 8 to rotate. The other end of the cylinder 5 is fixedly connected to an oil pipe threaded connector 32, which can connect to the hydraulic oil pipe of an external hydraulic system, allowing hydraulic oil to enter the cylinder 5 and push the piston 18. Since controlling the flow of hydraulic oil through a hydraulic system to generate thrust is existing technology and has been widely used, it is not described in detail here and is not shown in the figure. A cylinder frame 6 extends from the outer surface of the cylinder 5. The end of the cylinder frame 6 is fixed to one of the square shells 3, and the cylinder frame 6 serves to fix the cylinder 5.

[0033] A curved frame 19 extends from the upper end of the round-headed push column 7. The raised strip design on the surface of the round-headed push column 7 prevents it from rotating. A circular shell 21 is fixedly installed at the end of the curved frame 19, which serves to fix the circular shell 21. A lifting block 23 is elastically installed inside the circular shell 21, which serves to support the lifting block 23. The lifting block 23 extends through the upper and lower ends of the circular shell 21. An anti-loosening top block 20 is fixedly installed at the lower end of the lifting block 23. The upper edge of the cylinder frame 6... A notch 22 is provided, and an anti-loosening top block 20 is pressed against the vertical surface of the notch 22. The anti-loosening top block 20 extends into the notch 22 and abuts against the vertical surface of the notch 22, which can lock the round-headed push post 7, and then lock the rotating positioning protrusion ring 8, so that the positioning block 16 is firmly inserted into the positioning ring groove 17, so as to avoid the positioning block 16 from loosening due to pressure fluctuations in the hydraulic system after fixing, thereby causing the inner shell assembly 2 to loosen. This ensures the stable assembly of the outer shell assembly 1 and the inner shell assembly 2.

[0034] A lifting handle 26 is fixedly installed on the upper end of the lifting block 23. The lifting handle 26 facilitates gripping and lifting. A pressure cap 24 is coaxially fixedly installed on the outer surface of the lifting block 23. The pressure cap 24 is slidably installed inside the circular shell 21. A compression spring 25 is wound around the outer side of the lifting block 23. The two ends of the compression spring 25 are fixed to the upper end of the pressure cap 24 and the upper end of the inner side of the circular shell 21, respectively. When hydraulic oil enters the cylinder 5 to push the piston 18 to move, and then drives the round-headed pusher 7 to push the positioning convex ring 8, the anti-loosening top block 20 will move synchronously with the round-headed pusher 7 and slide on the cylinder frame 6. The positioning protrusion 8 causes the positioning block 16 to be inserted into the positioning ring groove 17. After the inner shell assembly 2 is fixed, the anti-loosening top block 20 slides to the notch 22 on the cylinder frame 6. Then, the anti-loosening top block 20 moves down under the push of the compression spring 25, so that the anti-loosening top block 20 extends into the notch 22 and abuts against the vertical surface of the notch 22. Two limiting grooves 27 are symmetrically opened on the outer surface of the pressure cap 24. Two limiting protrusions 28 extend symmetrically from the inner surface of the circular shell 21. The limiting protrusions 28 slide through the interior of the limiting grooves 27. The cooperation between the limiting grooves 27 and the limiting protrusions 28 prevents the anti-loosening top block 20 from rotating.

[0035] In use, the inner shell assembly 2 is inserted into the outer shell assembly 1. At this time, the limiting ear 4 on the inner shell assembly 2 presses against the outer shell assembly 1 to limit the movement, making the positioning ring groove 17 on the inner shell assembly 2 flush with the positioning block 16. Then, hydraulic oil is introduced into the cylinder 5 to push the piston 18 to move, which in turn drives the round-headed push pin 7 to push the positioning protrusion ring 8, causing the positioning protrusion ring 8 to rotate. At this time, the anti-loosening top block 20 will move synchronously with the round-headed push pin 7 and slide on the cylinder frame 6. The rotating positioning protrusion ring 8... Ring 8 drives the positioning frame 14 to move, pushing the positioning blocks 16 so that the four positioning blocks 16 can simultaneously extend from the square shell 3 and insert into the positioning ring grooves 17 on the inner shell assembly 2, thus fixing the inner shell assembly 2 into the outer shell assembly 1. After the inner shell assembly 2 is fixed, the anti-loosening top block 20 just slides to the notch 22 on the cylinder frame 6. Then, the anti-loosening top block 20 moves down under the push of the compression spring 25, so that the anti-loosening top block 20 extends into the notch 22 and is perpendicular to the plane of the notch 22. The opposing forces lock the round-headed push post 7, which in turn locks the rotated positioning protrusion ring 8, ensuring that the positioning block 16 remains firmly inserted in the positioning ring groove 17. This prevents the positioning block 16 from loosening due to hydraulic system pressure fluctuations after fixing, thus preventing the inner shell assembly 2 from becoming loose. This ensures the stable assembly of the outer shell assembly 1 and the inner shell assembly 2. Conversely, the lifting handle 26 can be manually pulled to pull the anti-loosening top block 20 out of the notch 22, and then the external hydraulic system can be controlled. The hydraulic oil is allowed to flow back, releasing the push on the positioning protrusion 8. The positioning protrusion 8 can then reverse and reset under the force of the return spring 11, thereby driving the positioning frame 14 to move. This causes the positioning block 16 to be pulled out of the positioning ring groove 17 and retracted into the square shell 3, thus loosening the inner shell assembly 2 and allowing it to be pulled out of the outer shell assembly 1. This allows for quick disassembly and assembly of the outer shell assembly 1 and the inner shell assembly 2, making it easier to insert and remove the inner shell assembly 2 from the outer shell assembly 1 for maintenance.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A detachable distributor for a blowout preventer, comprising a housing assembly (1) and an inner housing assembly (2) inserted inside the housing assembly (1), characterized in that: The outer surface of the outer shell assembly (1) is coaxially fitted with a positioning protrusion ring (8). Four square shells (3) are fixedly installed in a ring array on the outer surface of the outer shell assembly (1). The protrusion of the positioning protrusion ring (8) penetrates the interior of the square shell (3). The positioning protrusion ring (8) is elastically connected to the square shell (3). One end of the square shell (3) penetrates the interior of the outer shell assembly (1). One end of the square shell (3) is coplanar with the inner surface of the outer shell assembly (1). A positioning block (16) is provided through one end of the square shell (3). A positioning frame (14) is connected between the positioning block (16) and the protrusion of the positioning protrusion ring (8). A positioning ring groove (17) is opened on the upper part of the outer surface of the inner shell assembly (2). The positioning block (16) is inserted into the interior of the positioning ring groove (17). One of the square shells (3) is provided with a hydraulic component that pushes the positioning protrusion ring (8) to rotate. The outer surface of the protruding part of the positioning protrusion ring (8) extends into a protruding block (12), and a return spring (11) is fixedly installed on the side of the protruding block (12). The end of the return spring (11) is fixed to the inner wall of the square shell (3). A limiting ear (4) extends from the upper edge of the inner shell assembly (2), and the limiting ear (4) is pressed against the upper end of the outer shell assembly (1). The hydraulic components include a cylinder (5), a piston (18) is slidably mounted inside the cylinder (5), a round-headed push pin (7) extends from the middle of the side of the piston (18), the round-headed push pin (7) passes through one end of the cylinder (5), the round-headed push pin (7) slides with the cylinder (5), the round end of the round-headed push pin (7) is pressed against the protruding part of the positioning convex ring (8), the other end of the cylinder (5) is fixedly connected to an oil pipe threaded connector (32), a cylinder frame (6) extends from the outer surface of the cylinder (5), and the end of the cylinder frame (6) is fixed to one of the square shells (3).

2. A detachable diverter for a blowout preventer according to claim 1, characterized in that: Square holes (29) are provided on both sides of the square shell (3). The positioning protrusion (8) passes through the inside of the square hole (29). A sliding hole (30) is provided at one end of the square shell (3). The positioning block (16) is slidably installed inside the sliding hole (30).

3. A detachable diverter for a blowout preventer according to claim 1, characterized in that: The upper and lower end faces of the positioning protrusion ring (8) are provided with a plurality of sliding grooves (9) arranged in an annular array. A sliding claw (10) is slidably installed inside the sliding groove (9). The sliding claw (10) extends out from inside the sliding groove (9), and the end of the sliding claw (10) is fixed to the outer shell assembly (1).

4. A detachable diverter for a blowout preventer according to claim 1, characterized in that: The positioning block (16) has a lug (15) extending from the middle, and the inner surface of the protruding part of the positioning ring (8) has a ring lug (13). The ends of the lug (15) and the ends of the ring lug (13) are both rotatably mounted with connecting shafts (31). The two ends of the positioning frame (14) are respectively fixed to the outer surfaces of the two connecting shafts (31).

5. A detachable diverter for a blowout preventer according to claim 1, characterized in that: The upper end of the round-headed push column (7) extends into a curved frame (19), and a circular shell (21) is fixedly installed at the end of the curved frame (19). A lifting block column (23) is elastically installed inside the circular shell (21). The lifting block column (23) extends through the upper and lower ends of the circular shell (21). An anti-loosening top block (20) is fixedly installed at the lower end of the lifting block column (23). A notch (22) is opened at the upper edge of the cylinder frame (6), and the anti-loosening top block (20) is pressed against the vertical surface of the notch (22).

6. A detachable diverter for a blowout preventer according to claim 5, characterized in that: A lifting handle (26) is fixedly installed at the upper end of the lifting block column (23). A pressure cap (24) is coaxially fixedly installed on the outer surface of the lifting block column (23). The pressure cap (24) is slidably installed inside the circular shell (21). A compression spring (25) is wound around the outer side of the lifting block column (23). The two ends of the compression spring (25) are respectively fixed to the upper end of the pressure cap (24) and the upper end of the inner side of the circular shell (21). Two limiting grooves (27) are symmetrically opened on the outer surface of the pressure cap (24). Two limiting protrusions (28) extend symmetrically from the inner surface of the circular shell (21). The limiting protrusions (28) slide through the interior of the limiting grooves (27).

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