An underwater manifold multi-working condition adaptive connection device

Abstract

The present invention discloses an underwater manifold multi-working condition adaptive connection device, comprising manifold flanges respectively provided at the ends of the left and right manifolds, an intermediate disk provided between the left manifold flange and the right manifold flange, the intermediate disk being connected to the left manifold flange via a radial adaptive mechanism for compensating for radial deviation and an axial adaptive mechanism for compensating for axial deviation, and the intermediate disk being connected to the right manifold flange via a radial adaptive mechanism and an axial adaptive mechanism; the left and right manifolds are respectively provided with sealing shells, and the left and right sealing shells are compressed and sealed by a compression sealing mechanism. The present invention adopts an adaptive manifold connection device, which can self-adjust a certain degree of axial deviation and radial deviation generated by the manifold during use through the combined action of the connection rod shape reconstruction and the spring group on the intermediate disk, thereby meeting the use conditions under various working conditions, reducing additional stress, and improving service life.

Description

Technical Field

[0001] The present invention relates to a pipeline connecting device, in particular to an underwater manifold multi-working condition adaptive connecting device. Background Art

[0002] The oceans are rich in resources like oil and natural gas, and their transportation is paramount. The marine manifold systems used for this transportation are comprised of a complex network of connected manifolds, and factors like the adaptability and sealing of the manifold systems have a significant impact on the system. Currently, the manifolds used in deepwater oil and gas field development projects both domestically and internationally are mostly rigid structures. In marine environments, these manifolds are subject to the turbulent movement of seawater caused by currents and other factors, which can cause severe vibration, extrusion, and deformation in the manifold systems. Existing manifold systems are unable to adapt in real time. Furthermore, many manifold systems utilize only a single bolted connection, which can loosen the bolts and reduce sealing performance. Summary of the Invention

[0003] Purpose of the invention: The present invention aims to provide an underwater manifold adaptive device that can improve sealing and compensate for axial and radial deviations of the manifold system during use in multiple working conditions.

[0004] Technical solution: The present invention describes an underwater manifold multi-working condition adaptive connection device, comprising manifold flanges respectively provided at the ends of the left and right manifolds, an intermediate disk provided between the left manifold flange and the right manifold flange, the intermediate disk being connected to the left manifold flange via a radial adaptive mechanism for compensating for radial deviation and an axial adaptive mechanism for compensating for axial deviation, the intermediate disk being connected to the right manifold flange similarly via a radial adaptive mechanism and an axial adaptive mechanism; the left and right manifolds are respectively provided with sealing shells, the left sealing shell and the right sealing shell being compressed and sealed by a compression sealing mechanism.

[0005] Preferably, the compression sealing mechanism includes an adaptive flexible sealing component arranged between the left sealing shell and the right sealing shell, and a linkage mechanism is provided between the adaptive flexible sealing component and the left and right sealing shells; the linkage mechanism includes an operating component, a lever, a return spring and a pulling ring; the right sealing shell includes a right first sealing shell and a right second sealing shell, and a sealing ring is provided on the inner side of the right second sealing shell; the left sealing shell and the right first sealing shell are connected through an adaptive flexible sealing component, and an operating component is provided on the adaptive flexible sealing component; when the operating component moves to the right, the adaptive flexible sealing component on the left is pulled to drive the left sealing shell to move to the right, or when the operating component moves to the left, the adaptive flexible sealing component on the right is pulled to drive the right first sealing shell to move to the left; the operating component includes an operating ring and a slip ring connected to each other, and the upper part of the operating ring, that is, the part close to the outer ring, is provided A hole is provided in the middle of the adaptive flexible sealing component, and the lower part, which is close to the inner ring, is clamped with the radial groove on the outer surface of the slip ring; the fulcrum of the lever is installed on the frame arranged on the right manifold, and the long arm of the lever is the free end, passing through the hole of the operating ring. The bottom of the short arm of the lever is connected to the right manifold through a reset spring, and the end of the short arm is sleeved inside the slip ring. The inner diameter of the slip ring is a variable diameter structure, and the inner diameter gradually increases from left to right. When sliding along the short arm of the lever, the change in the inner diameter of the slip ring drives the short arm of the lever to be pressed down or lifted up under the action of the reset spring, so that the long arm of the lever rotates clockwise or counterclockwise around the fulcrum; the upper end of the pulling ring is connected to the first sealing shell on the right side, and the pulling ring is installed between the long arm of the lever and the sealing ring inside the second sealing shell on the right side. The movement of the pulling ring drives the compression seal between the first sealing shell on the right side and the second sealing shell on the right side, as well as between the sealing ring and the second sealing shell on the right side.

[0006] Preferably, the upper end of the pulling ring and the inner side of the first sealing shell on the right side are both provided with teeth that match each other and are meshed and connected with each other.

[0007] Preferably, the linkage mechanisms are arranged in several groups around the circumference of the manifold.

[0008] Preferably, the radial adaptive mechanism includes N manifold flange connecting bolts, N intermediate disk connecting bolts, 2N connecting rods and 2N bearings, wherein the connecting rods are connected to each other by flange connecting bolts or intermediate disk connecting bolts, and the flange connecting bolts and the intermediate disk connecting bolts are arranged alternately, the flange connecting bolt connection is fixed to the manifold flange by the flange connecting bolts and the bearings, and the intermediate disk connecting bolt connection is fixed to the intermediate disk by the intermediate disk connecting bolts and the bearings, and the radial deviation generated by the manifold during use is automatically adjusted by the rotation of the connecting rod in the radial plane.

[0009] Preferably, the intermediate disk is a three-leaf type, with three blades on each end. A notch is provided on the manifold flange corresponding to the blades of the intermediate disk, N is 3, and the flange connecting bolts are provided on the manifold flange corresponding to the notch of the intermediate disk. The intermediate disk connecting bolts are provided on the three blades of the intermediate disk corresponding to the notch of the manifold flange, providing installation space for the fixed connection between the radial adaptive mechanism and the intermediate disk, making the axial size of the device more compact.

[0010] Preferably, the axial adaptive mechanism comprises a spring group, one end of which is mounted in the manifold flange and the other end of which is mounted in the intermediate disk.

[0011] Preferably, spring mounting grooves are provided on the intermediate disk and the manifold flange, and the spring assembly is pressed between the two and pre-stressed in advance, so that the deformation of the spring during use compensates for the axial deviation of the manifold.

[0012] Preferably, the sealing shell consists of an upper and a lower part, which are connected at a joint by fastening bolts.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. An adaptive manifold connection device is adopted, and the radial and axial adaptive mechanisms can self-adjust a certain degree of axial deviation and radial deviation generated by the manifold during use through the joint action of the connecting rod shape reconstruction and the spring group on the intermediate disk, thereby meeting the use conditions under various working conditions, reducing additional stress, and improving service life; 2. An operating assembly, a lever, and a return spring linkage mechanism are used to simultaneously achieve the tightening and relaxation of the left and right sealing shells. The overall sealing and unloading can be achieved by simply sliding the operating ring. The operation is simple and easy to disassemble, and the clamping force is amplified by the lever to make the seal more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0016] Figure 3 This is a structural diagram of the radial adaptive mechanism of the present invention;

[0017] Figure 4 is a cross-sectional view of the radial adaptive mechanism of the present invention;

[0018] Figure 5 This is a diagram of the ten-spaced disk structure of the present invention;

[0019] Figure 6 is a cross-sectional view of the intermediate disk of the present invention;

[0020] Figure 7 This is a structural diagram of the sealed housing of the present invention;

[0021] Figure 8 for Figure 2 A partial enlarged schematic diagram in the middle;

[0022] Figure 9 for Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0023] Figure 10 This is a structural diagram of the present invention in which the adaptive flexible sealing assembly is arranged at the right manifold after the sealing shell is removed;

[0024] Figure 11 This is a structural schematic diagram of the present invention in which the adaptive flexible sealing component is arranged at the left manifold after the sealing shell is removed.

[0025] In the figure, the manifold flange 1; the intermediate disk 2; the blade 21; the extension tube 22; the sealing shell 3; the left sealing shell 31; the right sealing shell 32; the adaptive flexible sealing assembly 4; the operating ring 5; the lever 6; the return spring 7; the slip ring 8; the sealing ring 9; the pulling ring 10; the flange connecting bolts 11; the intermediate disk connecting bolts 12; the connecting rod 13; the spring group 14; the sealing gasket 15; and the fastening bolts 16. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1-2 As shown, the underwater manifold multi-working condition adaptive connection device described in the present invention includes manifold flanges 1 respectively provided at the ends of the left and right manifolds, an intermediate disk 2 is provided between the left manifold flange and the right manifold flange, the left side of the intermediate disk 2 is connected to the left manifold flange through a radial adaptive mechanism and an axial adaptive mechanism, and the right side of the intermediate disk 2 is also connected to the right manifold flange through a radial adaptive mechanism and an axial adaptive mechanism; a sealing shell 3 is provided on the left and right manifolds, and the left sealing shell 31 and the right sealing shell 32 are compressed and sealed by a compression sealing mechanism.

[0028] like Figure 3-6 As shown in Figures 10-11, the intermediate disk 2 is a three-leaf type, with three blades 21 at each end, and a secondary long tube 22 is axially provided at both ends. The secondary long tube 22 of the intermediate disk is inserted into the left and right manifolds, and a notch is provided at the manifold flange corresponding to the blades of the intermediate disk.

[0029] The radial adaptive mechanism comprises three manifold flange connecting bolts 11, three intermediate disk connecting bolts 12, six connecting rods 13 with connecting holes at both ends, and six bearings. The connecting rods 13, connected end-to-end, are connected via flange connecting bolts 11, intermediate disk connecting bolts 12, and bearings. The flange connecting bolts 11 and intermediate disk connecting bolts 12 are arranged alternately, meaning that three of the spaced connecting holes are secured to the manifold flange 1 via flange connecting bolts 11 and bearings, while the other three spaced connecting holes are secured to the three blades of the intermediate disk 2 via intermediate disk connecting bolts 12 and bearings. The flange connecting bolts 11 are located on the manifold flange 1 at the corresponding notches in the intermediate disk, while the intermediate disk connecting bolts 12 are located on the three blades of the intermediate disk 2 at the corresponding notches in the manifold flange. This provides mounting space for the radial adaptive mechanism and the intermediate disks, making the device more compact in axial dimensions. The connecting rods rotate in the radial plane to automatically adjust for radial deviations in the manifold during use.

[0030] The axial adaptive mechanism includes a spring group 14, one end of which is installed in a spring mounting hole prefabricated on the manifold flange 1, and the other end is installed in a spring mounting groove opened on the intermediate disk 2. It is pre-stressed in advance and the deformation of the spring group 14 during use compensates for the axial deviation of the manifold.

[0031] The compression sealing mechanism includes a left sealing shell 31, a right sealing shell 32, an adaptive flexible sealing component 4 and a linkage mechanism, and the linkage mechanism is arranged in a space surrounded by the left and right sealing shells, the adaptive flexible sealing component and the right manifold, such as Figure 2 and 8 shown.

[0032] The linkage mechanism includes an operating assembly, a lever 6, a return spring 7, and a pull ring 10. Four linkage mechanisms are arranged around the manifold. The right sealing housing 32 includes a right first sealing housing 321 and a right second sealing housing 322. A sealing gasket 15 is provided between the right first sealing housing and the right second sealing housing, and a sealing ring 9 is provided inside the right second sealing housing. The left sealing housing 31 and the right first sealing housing 321 are connected via an adaptive flexible sealing assembly 4. An operating ring assembly is provided on the adaptive flexible sealing assembly. The operating assembly includes an interconnected operating ring 5 and a slip ring 8. The upper portion of the operating ring 5, i.e., the portion close to the outer ring, is provided between the inner and outer rings, and a hole is provided in the middle portion. The lower portion, i.e., the portion close to the inner ring, engages with the radial groove on the outer surface of the slip ring 8.

[0033] The adaptive flexible sealing assembly 4 is made of a deformable material and is attached to the left sealing housing 31, the operating ring 5, and the right first sealing housing 321 by gluing. As the operating ring 5 moves left and right, it stretches or squeezes both sides of the adaptive flexible sealing assembly, causing it to deform. This in turn drives the left sealing housing 31 and the right first sealing housing 321 to move left and right, cooperating with the right second sealing housing 322 to achieve a complete seal on the right side. Specifically, when the operating ring moves rightward, the adaptive flexible sealing assembly 4 experiences tension on the left side and compression on the right side, pushing the left sealing housing 31 rightward, pressing it against the left flange and sealing the left side. Pushing the operating ring 5 in the opposite direction releases the seal.

[0034] The fulcrum of the lever 6 is installed on the frame set on the right manifold. The long arm of the lever is the free end, passing through the hole of the operating ring 5. The bottom of the short arm of the lever is connected to the right manifold through the reset spring 7. The end of the short arm is sleeved in the slip ring 8. The inner diameter of the slip ring 8 is a variable diameter structure, and the inner diameter gradually increases from left to right. When the slip ring slides along the short arm of the lever 6, the change in the inner diameter of the slip ring 8 drives the short arm of the lever to be pressed down or lifted up under the action of the reset spring, thereby causing the long arm of the lever to rotate clockwise or counterclockwise around the fulcrum.

[0035] The pull ring 10 is mounted between the long arm of the lever 6 and the sealing ring 9 inside the right second sealed housing 322. The upper end of the pull ring 10 is provided with teeth that mesh with the teeth inside the right first sealed housing 321. When the pull ring 10 moves under the action of the long arm of the lever 6, the meshing of the teeth between the two causes the right first sealed housing 321 to move with the pull ring 10, thereby pressing the right first sealed housing 321 against the right second sealed housing 322. The right side is then completely sealed by the sealing gasket 15 installed between the right first and right second sealed housings and the sealing ring 9 installed inside the right second sealed housing.

[0036] By setting up multiple sets of linkage mechanisms, the left sealing shell 31 can be pressed against the left flange to achieve left sealing, and the right first sealing shell 321 and the sealing ring 9 can be pressed against the right second sealing shell 322 to achieve right sealing.

[0037] The sealing shell 3 is composed of two parts, the upper and lower parts, which are connected at the joint by fastening bolts 16. Figure 7 A sealing gasket 15 is provided between the sealing housing and the manifold.

[0038] The working principle of the present invention is: by moving the operating ring to the right by the manipulator, on the one hand, the rightward movement of the operating ring can drive the adaptive flexible sealing component to stretch, extrude and deform, and then pull the left sealing shell to the right, so that it is close to the left manifold flange, thereby realizing the sealing of the left sealing shell; on the other hand, the rightward movement of the operating ring drives the slip ring to slide to the right along the short arm of the lever, and the inner diameter of the slip ring changes from large to small, driving the short arm of the lever to press down, causing the long arm of the lever to rotate clockwise around the fulcrum, and then driving the pulling ring to move to the right, thereby pushing the sealing ring to press the second sealing shell on the right, and through the meshing action, the first sealing shell 321 on the right moves to the right and presses the second sealing shell 322 on the right, thereby realizing the sealing of the right sealing shell.

[0039] During use, if the left or right manifolds have slight radial displacement, the left and right radial adaptive mechanisms will be deformed and the connecting rod will be reconstructed, thereby automatically adjusting the radial deviation in real time; when the left or right manifolds have slight axial displacement, the spring group between the intermediate disk and the left and right manifold flanges will be deformed and adaptively adjusted to compensate for the axial deviation, which can extend the service life of the manifold, make transportation more stable, and meet the needs of more working conditions.

[0040] During unloading, the operating ring is moved to the left, driving the slip ring to slide to the left along the short arm of the lever. The inner diameter of the slip ring increases from small to large, and the short arm of the lever relaxes. Under the action of the reset spring, the short arm of the lever is lifted, causing the long arm of the lever to rotate counterclockwise around the fulcrum, stopping the compression of the pulling ring and the second sealing shell on the right side. At the same time, the leftward movement of the operating ring can drive the deformation of the adaptive flexible sealing assembly, thereby pushing the left sealing shell to move to the left, releasing the sealing at both ends of the left and right sealing shells, and the device can be disassembled by removing the fastening bolts of the sealing shells.

Claims

1. An underwater manifold multi-condition adaptive connection device, characterized in that: The invention comprises manifold flanges (1) respectively provided at the ends of the left and right manifolds, an intermediate disk (2) being provided between the left manifold flange and the right manifold flange, the left side of the intermediate disk (2) being connected to the left manifold flange via a radial adaptive mechanism and an axial adaptive mechanism, and the right side of the intermediate disk (2) being connected to the right manifold flange via the radial adaptive mechanism and the axial adaptive mechanism; the left and right manifolds are respectively provided with sealing shells (3), and the left sealing shell (31) and the right sealing shell (32) are compressed and sealed by a compression sealing mechanism; The compression sealing mechanism includes an adaptive flexible sealing assembly (4) provided between a left sealing shell (31) and a right sealing shell (32), wherein the right sealing shell (32) includes a right first sealing shell (321) and a right second sealing shell (322), and a sealing ring (9) is provided on the inner side of the right second sealing shell (322); the left sealing shell (31) and the right first sealing shell (321) are connected via the adaptive flexible sealing assembly (4), and an operating assembly is provided on the adaptive flexible sealing assembly (4), and the operating assembly includes an operating ring (5) and a slip ring (8) connected to each other; a lever (6) is installed on the right manifold, and the fulcrum of the lever is provided on the frame on the right manifold; the long arm of the lever (6) is a free end, The bottom of the short arm passes through the operating ring and is connected to the right manifold through a return spring (7). The end of the short arm is sleeved in a slip ring (8). The inner diameter of the slip ring is a variable diameter structure. When the slip ring slides along the short arm of the lever, it drives the short arm of the lever to be pressed down or lifted up under the action of the return spring, thereby causing the long arm of the lever to rotate clockwise or counterclockwise around the fulcrum. A pulling ring (10) is provided between the long arm of the lever (6) and the sealing ring (9) inside the right second sealing shell (322). The upper end of the pulling ring (10) is connected to the right first sealing shell (321). The movement of the pulling ring (10) drives the compression and sealing between the right first sealing shell (321) and the right second sealing shell (322) and between the sealing ring (9) and the right second sealing shell (322). The radial adaptive mechanism comprises N manifold flange connecting bolts (11), N intermediate disk connecting bolts (12), 2N connecting rods (13) and 2N bearings, wherein the connecting rods (13) are connected to each other via flange connecting bolts (11) or intermediate disk connecting bolts (12), and the flange connecting bolts (11) and the intermediate disk connecting bolts (12) are alternately arranged, the flange connecting bolt connection is fixed to the manifold flange (1) via the flange connecting bolts and the bearings, and the intermediate disk connecting bolt connection is fixed to the intermediate disk (2) via the intermediate disk connecting bolts and the bearings; The axial adaptive mechanism comprises a spring group (14), one end of which is mounted in the manifold flange (1) and the other end of which is mounted in the intermediate disk (2); spring mounting grooves are provided on the intermediate disk (2) and the manifold flange (1), and the spring group (14) is arranged in the spring mounting groove between the two and is pre-loaded.

2. The underwater manifold multi-working condition adaptive connection device according to claim 1, characterized in that: The adaptive flexible sealing component (4) is made of deformable material.

3. The underwater manifold multi-condition adaptive connection device according to claim 1, characterized in that: The upper end of the pulling ring (10) and the inner side of the right first sealing shell (321) are both provided with teeth that match each other and are meshed and connected with each other.

4. The underwater manifold multi-working condition adaptive connection device according to claim 1, characterized in that: The operating ring is arranged between the adaptive flexible sealing components close to the outer ring, with a hole provided in the middle, and is arranged in the radial groove on the outer surface of the slip ring close to the inner ring.

5. The underwater manifold multi-condition adaptive connection device according to claim 1, characterized in that: The intermediate disk (2) is a three-leaf type, with three blades (21) at each end. A notch is provided on the manifold flange corresponding to the blades of the intermediate disk, N is 3, and the flange connecting bolts are provided on the manifold flange corresponding to the notch of the intermediate disk. The intermediate disk connecting bolts are provided on the three blades of the intermediate disk corresponding to the notch of the manifold flange.

6. The underwater manifold multi-working condition adaptive connection device according to claim 1, characterized in that: The sealing shell (3) consists of an upper and a lower part, which are connected at a joint by a fastening bolt (16).

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