Subsea pipeline suspended span supporting device

Abstract

The invention discloses a subsea pipeline suspended span supporting device which comprises a supporting frame, the supporting frame comprises a plurality of detachably connected supporting modules, and the supporting modules are spliced in the height direction to obtain the supporting frame with the preset height; the top support is detachably mounted at the top of the supporting frame; and the bottom support is detachably mounted at the bottom of the supporting frame and is fixed in seabed sediment. The suspended span phenomenon caused in the using process of the subsea pipeline is avoided, and the operation safety of the pipeline is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of submarine construction auxiliary equipment, and in particular to a submarine pipeline spanning support device. Background Art

[0002] Submarine pipelines are important marine engineering facilities, widely used in various fields, primarily for transporting various fluids and gases. Overhanging submarine pipelines refers to a phenomenon in which a submarine pipeline becomes suspended in mid-air due to a lack of effective seabed support. During operation, overhanging can occur due to factors such as uneven seabed conditions and erosion by currents. This overhanging condition increases pipeline fatigue loads and reduces pipeline integrity, posing a threat to its safe operation.

[0003] Therefore, providing a subsea pipeline free-span support device to solve the free-span phenomenon caused during the use of the subsea pipeline and improve the safety of pipeline operation has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] To this end, an embodiment of the present invention provides a subsea pipeline spanning support device to at least partially solve the above technical problems.

[0005] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] The present invention provides a subsea pipeline spanning support device, comprising:

[0007] A support frame, comprising a plurality of detachably connected support modules, wherein the support modules are spliced ​​in the height direction to obtain a support frame of a preset height;

[0008] a top support detachably mounted on the top of the support frame;

[0009] A bottom support, the bottom support being detachably mounted on the bottom of the support frame and fixed in the seabed mud;

[0010] The components of the support frame, the top support and the bottom support are all made of non-metallic materials.

[0011] During use, an appropriate number of support modules are selected and spliced ​​based on the actual span height of the submarine pipeline. Each support module is fixed to the adjacent modules until the desired preset height is reached. The top support is then installed on the highest support module, and the bottom support is installed on the lowest support module. The entire support device is lowered underwater to the span position, with the bottom support fixed in the seabed mud and the top support used to support the submarine pipeline, thus achieving span support. This modular design allows the height of the support frame to be flexibly adjusted according to actual needs, improving the adaptability and versatility of the device. The detachable connection method facilitates installation and maintenance, reducing construction costs. Furthermore, all components are made of non-metallic materials to prevent electrochemical reactions between them and the submarine pipeline in seawater, which could corrode the pipeline.

[0012] In some embodiments, the bottom support comprises:

[0013] A bottom support plate, wherein the bottom support plate is provided with a mounting boss, and the bottom of the support frame is fixedly connected to the bottom support plate via the mounting boss;

[0014] Support legs, the support legs are installed at the bottom of the bottom support plate and inserted into the seabed mud;

[0015] The limiting rib plate is arranged on the upper surface of the bottom support plate.

[0016] In some embodiments, there are multiple supporting legs, and each supporting leg is arranged in an array on the lower surface of the bottom support plate.

[0017] In some embodiments, the support leg is a conical cylinder structure, and the larger cross-section of the conical cylinder structure is fixed to the lower surface of the bottom support plate.

[0018] In some embodiments, the support module comprises:

[0019] An intermediate connecting member, wherein the intermediate connecting member comprises at least two layers, wherein the intermediate connecting member on the top layer is detachably connected to the top support, and the intermediate connecting member on the bottom layer is detachably connected to the bottom support;

[0020] Lateral support members, there are multiple lateral support members, each of which is located between the intermediate connecting members on both sides in the height direction, and each of which is circumferentially arranged laterally around the intermediate connecting member; one end of the lateral support member is detachably connected to the intermediate connecting member located above it, and the other end is detachably connected to the intermediate connecting member located below it.

[0021] In some embodiments, the intermediate connector includes:

[0022] Main frame;

[0023] reinforcing ribs, the reinforcing ribs being installed in the main frame;

[0024] A mounting hole member, the mounting hole member is provided on the outer periphery of the main frame;

[0025] Wherein, the main frame, the reinforcing ribs and the mounting hole parts are an integrally formed structure.

[0026] In some embodiments, the lateral support comprises:

[0027] Support columns, there are at least two support columns, one end of each support column is detachably inserted into the mounting hole of the intermediate connector located above the support column, and the other end of each support column is detachably inserted into the mounting hole of the intermediate connector located below the support column;

[0028] Support ribs are installed between two adjacent support columns.

[0029] In some embodiments, the top support comprises:

[0030] A top support plate, the top support plate being detachably connected to the support frame;

[0031] An adjusting column, the adjusting column being arranged on the top support plate,

[0032] An adjustment plate is installed above the top support plate through an adjustment component, and the distance between the adjustment plate and the top support plate in the height direction is adjusted by the adjustment component.

[0033] In some embodiments, the adjustment component includes:

[0034] There are at least two pad groups, each of which is circumferentially cylindrical; each pad group includes a plurality of pads, and each of the pads is stacked in the height direction; each pad includes a hard portion, an elastic layer covering the outside of the hard portion, and a limiting shaft mounted on the elastic layer, the limiting shafts correspondingly passing through the shaft holes provided in the clamping ring;

[0035] A clamping ring, which is a detachable two-piece structure. Each of the pad groups is fastened in the clamping ring. The clamping ring is provided with a plurality of axial holes along the height direction. A limiting protrusion is provided at the bottom of the clamping ring. The clamping ring is movably sleeved on the adjusting column in the height direction. The limiting protrusion is slidably installed in the strip groove.

[0036] The lower surface of the adjustment plate is provided with a mounting post, and a first clamping ring is provided on the circumference of the mounting post. There are multiple mounting posts, and reinforcing ribs are provided between adjacent mounting posts. A second clamping ring is provided on the top of the clamping ring, and the first clamping ring and the second clamping ring are fixed in an inlaid manner.

[0037] The adjusting column includes a thick section and a thin section, the thick section is mounted on the upper surface of the top support plate, and the thin section is mounted on the top of the thick section; a strip groove is opened on the thick section along the height direction, and a radially penetrating pin hole is opened on the side of the thin section; each of the pad blocks is sleeved on the thin section, and the bottom is supported on the step formed on the top of the thick section;

[0038] A robot gripping handle is installed on the side of the adjustment plate, and a pit is provided on the upper surface of the adjustment plate which is coaxial with the mounting column. A through groove is provided on the side of the pit, and an assembly hole is provided on the upper surface of the adjustment plate; a through hole is provided in the mounting column, and the adjustment column passes through the through hole, and a transversely arranged pin is inserted into the pin hole provided on the thin section, and the pin is clamped in the through groove.

[0039] In some embodiments, the top support further comprises:

[0040] A top pressure plate, the top pressure plate is installed above the top support plate, and a plurality of stop rods are provided on the top pressure plate;

[0041] An eccentric arc plate is installed above the top pressure plate. The thickness of the eccentric arc plate gradually decreases along the arc direction. A plurality of limiting teeth are provided at the bottom of the eccentric arc plate. The limiting teeth are clamped and fixed with the stop rod. The sea pipe to be supported is placed on the eccentric arc plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0043] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0044] Figure 1This is one of the structural schematic diagrams of the submarine pipeline span support device provided by the present invention;

[0045] Figure 2 This is a second structural diagram of the subsea pipeline span support device provided by the present invention;

[0046] Figure 3 This is one of the structural schematic diagrams of the top support in the subsea pipeline spanning support device provided by the present invention;

[0047] Figure 4 This is a second structural diagram of the top support in the subsea pipeline spanning support device provided by the present invention;

[0048] Figure 5 This is one of the structural schematic diagrams of the top support plate and the support column in the top support provided by the present invention;

[0049] Figure 6 This is a second structural diagram of the top support plate and support column in the top support provided by the present invention;

[0050] Figure 7 This is one of the partial structural schematic diagrams of the top support provided by the present invention;

[0051] Figure 8 This is a second schematic diagram of a partial structure of the top support provided by the present invention;

[0052] Figure 9 This is one of the structural schematic diagrams of the adjustment plate in the top support provided by the present invention;

[0053] Figure 10 This is the second structural diagram of the adjustment plate in the top support provided by the present invention;

[0054] Figure 11 This is a third schematic diagram of a partial structure of the top support provided by the present invention;

[0055] Figure 12 This is a fourth schematic diagram of a partial structure of the top support provided by the present invention;

[0056] Figure 13 This is one of the partial structural schematic diagrams of the adjustment assembly of the top support provided by the present invention;

[0057] Figure 14 This is a second partial structural diagram of the adjustment assembly of the top support provided by the present invention;

[0058] Figure 15 This is a schematic structural diagram of the support module provided by the present invention;

[0059] Figure 16 This is a schematic structural diagram of the lateral support member in the support module provided by the present invention;

[0060] Figure 17 This is a schematic structural diagram of the intermediate connecting member in the support module provided by the present invention.

[0061] Description of reference numerals:

[0062] 100. Subsea pipeline to be supported;

[0063] 1. Support frame;

[0064] 11. Support module;

[0065] 111. Intermediate connecting piece, 1111. Main frame, 1112. Reinforcement ribs, 1113. Mounting holes;

[0066] 112, lateral support member, 1121, support column; 1122, support rib;

[0067] 2. Top support;

[0068] 21. Top support plate, 22. Adjustment column, 23. Adjustment plate, 24. Adjustment assembly, 25. Latch, 26. Top pressure plate, 27. Eccentric arc plate;

[0069] 211, mounting protrusion, 212, grid rib;

[0070] 221, thick section, 222, thin section, 223, strip groove, 224, pin hole, 225, step, 226, pit;

[0071] 231, mounting column, 2311, first clamping ring, 232, reinforcing rib, 233, robot gripping handle;

[0072] 234, pit, 235, through groove, 236, assembly hole;

[0073] 241, pad, 2411, hard part, 2412, elastic layer, 2413, limit axis;

[0074] 242, holding ring, 2421, shaft hole, 2422, limiting protrusion, 2423, second holding ring;

[0075] 271, limit teeth;

[0076] 3. Bottom support;

[0077] 31. Bottom support plate, 32. Support legs, 33. Limiting ribs. DETAILED DESCRIPTION

[0078] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0079] In a specific embodiment, Figures 1-17 As shown, the sea pipe spanning support device provided by the present invention includes a support frame 1, a top support 2 and a bottom support 3; wherein, the support frame 1 includes a plurality of detachably connected support modules 11, and each of the support modules 11 is spliced ​​in the height direction to obtain a support frame 1 of a preset height; the top support 2 is detachably mounted on the top of the support frame 1, and the bottom support 3 is detachably mounted on the bottom of the support frame 1 and fixed in the seabed mud.

[0080] During use, an appropriate number of support modules 11 are selected and spliced ​​based on the actual span height of the submarine pipeline. Each support module 11 is fixed to the adjacent modules until the desired preset height is reached. The top support 2 is then installed on the highest support module 11, and the bottom support 3 is installed on the lowest support module 11. The entire support device is then lowered underwater to the span position, with the bottom support 3 fixed in the seabed mud and the top support 2 used to support the submarine pipeline, thereby achieving span support. This modular design allows the height of the support frame 1 to be flexibly adjusted according to actual needs, improving the adaptability and versatility of the device. The detachable connection method facilitates installation and maintenance, reducing construction costs.

[0081] Specifically, the bottom support 3 includes a bottom support plate 31, support legs 32 and a limiting rib 33; wherein, a mounting boss is provided on the bottom support plate 31, and the bottom of the support frame 1 is fixedly connected to the bottom support plate 31 through the mounting boss, the support legs 32 are installed at the bottom of the bottom support plate 31 and inserted into the seabed mud, and the limiting rib 33 is opened on the upper surface of the bottom support plate 31. The design of the bottom support plate 31 provides a stable support foundation, and the support legs 32 are inserted into the seabed mud, which enhances the anti-overturning ability and stability of the device. The limiting ribs can be set as a vertical and horizontal grid structure, and the support frame 1 thereon can be confined between the vertical and horizontal grids. In this way, the setting of the limiting ribs can not only improve the strength of the bottom support plate 31, but also prevent the support frame 1 from displacement.

[0082] Furthermore, there are multiple support legs 32, each of which is arranged in an array on the lower surface of the bottom support plate 31. The array arrangement of multiple support legs 32 can disperse the supporting force, reduce the load of a single support leg 32, and resist the interference of ocean currents, thereby improving the stability and reliability of the device, and is particularly suitable for areas with complex seabed topography.

[0083] In order to improve the convenience of inserting the support leg 32 into the seabed mud, the support leg 32 is a conical cylinder structure, and the larger cross-section of the conical cylinder structure is fixed to the lower surface of the bottom support plate 31. When inserted into the seabed mud, the smaller end enters the mud first, thereby facilitating the increase of the pressure per unit area and reducing the difficulty of insertion.

[0084] The support frame 1 adopts a modular structure. The number of support modules 11 used in the support frame 1 can be determined according to the actual height required for adjustment. The number and type of structural members in each support module 11 can be the same or different, and can be flexibly matched and selected according to the needs of use. Specifically, the support module 11 includes an intermediate connector 111 and a lateral support member 112; wherein the intermediate connector 111 is at least two layers, the intermediate connector 111 located at the top layer is detachably connected to the top support 2, and the intermediate connector 111 located at the bottom is detachably connected to the bottom support 3; the lateral support members 112 are multiple, each of the lateral support members 112 is located between the adjacent two sides of the intermediate connector 111 in the height direction, and each of the lateral support members 112 is circumferentially arranged on the side of the intermediate connector 111; one end of the lateral support member 112 is detachably connected to the intermediate connector 111 located above it, and the other end is detachably connected to the intermediate connector 111 located below it. The height of the lateral support members 112 can be of various specifications in different support modules 11. During use, lateral support members 112 of appropriate height are selected as needed to form the support module 11, and different height combinations are used to better adapt to the required support height.

[0085] The support frame 1 of this modular structure not only has high structural strength and stability and can withstand large loads, but is also easy to install and maintain. The module combination is flexible and diverse, which improves the adaptability and versatility of the device.

[0086] The intermediate connector 111 comprises a main frame 1111, reinforcing ribs 1112, and mounting holes 1113. The reinforcing ribs 1112 are installed within the main frame 1111, and the mounting holes 1113 are arranged on the periphery of the main frame 1111. The main frame 1111, the reinforcing ribs 1112, and the mounting holes 1113 form an integrally formed structure. The main frame 1111 provides overall support for the intermediate connector 111. The reinforcing ribs 1112 within the main frame 1111 enhance support strength, and the mounting holes 1113 enable detachable connections between the intermediate connector 111 and the lateral supports 112, between the intermediate connector 111 and the top support 2, and between the intermediate connector 111 and the bottom support 3. The integrally formed structure improves the overall strength and rigidity of the intermediate connector 111, reduces the number of connection points, and reduces structural complexity and manufacturing costs.

[0087] Specifically, the lateral support member 112 includes a support column 1121 and a support rib 1122. There are at least two support columns 1121. One end of the support column 1121 can be detachably inserted into the mounting hole 1113 of the intermediate connecting member 111 located above it, and the other end of the support column 1121 can be detachably inserted into the mounting hole 1113 of the intermediate connecting member 111 located below it; the support rib 1122 is installed between two adjacent support columns 1121.

[0088] During installation, the appropriate number and height of support columns 1121 are selected based on the desired height and assembled. Support columns 1121 are fixed to the mounting holes 1113 of the intermediate connector 111 by insertion. Support ribs 1122 are installed between adjacent support columns 1121, providing additional stability and effectively preventing deformation of the support frame 1 under lateral forces. A tight connection is achieved by controlling the end shaft diameters of adjacent support columns 1121 and the inner diameter of the hole in the intermediate connector 111. Adhesive can be used to enhance connection reliability if necessary.

[0089] Furthermore, the forms of the intermediate connecting member 111 and the supporting member 112 can be expanded toward the periphery, and the number of the supporting columns 1121, the supporting ribs 1122 and the mounting holes 1113 can be increased to achieve a larger supporting area.

[0090] In actual use, in order to reduce the difficulty of operation, a gap must be reserved between the support device and the sea pipe 100 to be supported. In addition, it is usually impossible to accurately determine the height that the support device needs to support, and as the service life of the equipment increases, it will also cause a certain degree of height change (for example, the height of sinking into the seabed mud increases). This requires that the height can be fine-tuned during the equipment installation process or subsequent maintenance. To achieve this purpose, the top support 2 includes a top support plate 21, an adjustment column 22 and an adjustment plate 23; wherein, the top support plate 21 is detachably connected to the support frame 1, and the lower surface of the top support plate 21 is provided with mounting protrusions 211, which are embedded in the mounting holes 1113 of the support module 11 to achieve detachable connection between the top support plate 21 and the support frame 1; the lower surface of the top support plate 21 is also provided with horizontal and vertical grid ribs 212 to enhance the support strength of the top support plate 21, and the grid ribs 212 assist in limiting the lateral movement between the support frame 1 and the top support plate 21 to avoid movement. The adjusting column 22 is provided on the top supporting plate 21 , and the adjusting plate 23 is installed above the top supporting plate 21 through an adjusting assembly 24 , and the distance from the top supporting plate 21 in the height direction is adjusted by the adjusting assembly 24 .

[0091] Specifically, the adjustment component 24 includes a pad group and a clamping ring 242, and there are at least two pad groups, each of which is circumferentially surrounded by a cylindrical structure; each pad group includes a plurality of pads 241, and each pad 241 is stacked in the height direction; the pad 241 includes a hard part 2411, an elastic layer 2412 coated on the outside of the hard part 2411, and a limiting shaft 2413 installed on the elastic layer 2412, and the limiting shaft 2413 passes through the shaft hole 2421 opened on the clamping ring 242 in a one-to-one correspondence; the clamping ring 242 is provided with a plurality of pads 2411, and the limiting shaft 2413 passes through the shaft hole 2421 opened on the clamping ring 242 in a one-to-one manner ... The ring 242 is a detachable two-piece structure, each of the pad groups is fastened to the clamping ring 242, the clamping ring 242 is provided with a plurality of axial holes 2421 along the height direction, and a limiting protrusion 2422 is provided at the bottom of the clamping ring 242. The clamping ring 242 is movably sleeved on the adjusting column 22 in the height direction, and the limiting protrusion 2422 is slidably installed in the strip groove 223; the lower surface of the adjusting plate 23 is provided with a mounting column 231, and the circumference of the mounting column 231 is provided with a first clamping ring 2311. There are multiple mounting columns 231, and adjacent A reinforcing rib 232 is provided between the mounting columns 231; a second snap ring 2423 is provided on the top of the holding snap ring 242, and the first snap ring 2311 is fixedly engaged with the second snap ring 2423; the adjusting column 22 includes a thick section 221 and a thin section 222, the thick section 221 is mounted on the upper surface of the top support plate 21, and the thin section 222 is mounted on the top of the thick section 221; a strip groove 223 is provided on the thick section 221 in the height direction, and a radially penetrating pin hole 224 is provided on the side of the thin section 222; each of the pad blocks is sleeved on the thin section 222 On the top, the bottom support 3 is on the step 225 formed on the top of the thick section 221; a robot gripping handle 233 is installed on the side of the adjusting plate 23, and the upper surface of the adjusting plate 23 is provided with a pit 234 coaxially arranged with the mounting column 231, and the side of the pit 234 has a through groove 235, and the upper surface of the adjusting plate 23 is provided with an assembly hole 236; a through hole is provided in the mounting column 231, and the adjusting column 22 passes through the through hole, and the transversely arranged pin 25 is inserted into the pin hole 224 provided on the thin section 222, and the pin 25 is clamped in the through groove 235.

[0092] Furthermore, the top support 2 also includes a top pressure plate 26 and an eccentric arc plate 27. The top pressure plate 26 is installed above the top support plate 21, and the eccentric arc plate 27 is installed above the top pressure plate 26. The thickness of the eccentric arc plate 27 gradually decreases along the arc direction. The bottom of the eccentric arc plate 27 is provided with a plurality of limiting teeth 271. The limiting teeth 271 are clamped and fixed with the stop rod. The sea pipe 100 to be supported is placed on the eccentric arc plate 27. During the installation process, according to the actual span height of the submarine pipeline, the position of the eccentric arc plate 27 is rotated and adjusted to make it in close contact with the pipeline. The clamping and fixing of the limiting teeth 271 with the stop rod ensures that the eccentric arc plate 27 will not retreat when supporting the pipeline.

[0093] During use, based on the required support height of the sea pipe 100 to be supported, support modules 11 of appropriate specifications and quantity are selected and assembled into a support frame 1 on the deck of the operating vessel. The support frame 1 is then assembled with the bottom support 3 and the top support 2 to complete the construction of the entire device. With the assistance of an underwater robot or diver, the assembled device is positioned below the sea pipe to be supported. To facilitate operation, a certain height is reserved between the top support 2 and the sea pipe 100 to be supported. The underwater robot or diver places the eccentric arc plate 27 between the bottom of the sea pipe 100 to be supported and the top pressure plate 26 and rotates and adjusts the position of the eccentric arc plate so that it is in close contact with the sea pipe 100 to be supported. The gravity of the sea pipe 100 to be supported is transmitted to the seabed through the top support 2, the support frame 1, and the bottom support 3, thereby achieving a supporting effect. Changing the height of the top support 2 achieves upward support for the sea pipe and allows the bottom support 3 to penetrate a certain depth into the seabed mud.

[0094] The supported subsea pipeline 100 must be lifted a certain distance relative to its initial position to provide reliable support against the seabed. The sum of the pipeline's elevation and the downward movement of the bottom support relative to its initial position is H, where H > 0 and < the cumulative height of all layers of pads 241.

[0095] Among them, the method for changing the height of the top support 2 is to remove the pin 25, and the underwater robot or diver goes into the water with a tool jack (provided separately), and places the jack between the top support plate 21 and the adjustment plate 23, and the jack base is placed in the pit 226. The jack push rod pushes the adjustment plate 23 to move upward, and the underwater robot or diver operates the jack to lift the adjustment plate 23. As the adjustment plate 23 is lifted, the first clamping ring 2311 drives the clamping ring 242 to rise synchronously. When the lifting height exceeds the height of the topmost pad 241, the hard part 2411 moves inward under the push of the elastic layer 2412 until the inner diameter of the hard part 2411 is equal to that of the thin section 22. 2, the adjustment plate 23 stops moving once the outer diameter of the adjustment plate 23 is in contact. The elastic layer 2412 fills the gap between the hard portion 2411 and the clamping ring 242. At this point, the bottom of the topmost pad 241 contacts the top of the thick section 221, and the top of the topmost pad 241 is in contact with the bottom of the mounting post 231. If the jack is removed at this point, the adjustment plate 23 moves downward under the weight of the adjustment plate 23 and its upper components, eventually causing the bottom of the mounting post 231 to land on top of the topmost pad 241, raising the height of the adjustment plate 23 and providing support. Similarly, each time the adjustment plate 23 is raised above the height of a layer of pads 241, another layer of pads 241 is pushed inward to provide support. An underwater robot or diver operates the jack to continue increasing the gap between the adjustment plate 23 and the top support plate 21 until the sea pipe 100 is lifted to the desired height and the bottom support 3 is deeply embedded in the mud and sand. The underwater robot or diver removes the jack and retrieves it to the operating vessel. Once the supporting sea pipe 100 and the adjustment plate 23 fall back under the action of gravity, the gravity is transmitted downward by the pads 241 that are pushed into the interior layer by layer until it reaches the boss of the thick section 221, thus achieving support. Furthermore, the jack can also be replaced by other loading tools.

[0096] The above specific implementation methods further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the present invention should be included in the scope of protection of the present invention.

Claims

1. A subsea pipeline span support device, characterized in that: include: A support frame, comprising a plurality of detachably connected support modules, wherein the support modules are spliced ​​in the height direction to obtain a support frame of a preset height; a top support, the top support being detachably mounted on the top of the support frame; A bottom support, the bottom support being detachably mounted on the bottom of the support frame and fixed in the seabed mud; The components of the support frame, the top support and the bottom support are all made of non-metallic materials.

2. The subsea pipe spanning support device according to claim 1, characterized in that: The bottom support comprises: A bottom support plate, wherein the bottom support plate is provided with a mounting boss, and the bottom of the support frame is fixedly connected to the bottom support plate via the mounting boss; Support legs, the support legs are installed at the bottom of the bottom support plate and inserted into the seabed mud; The limiting rib plate is arranged on the upper surface of the bottom support plate.

3. The subsea pipe spanning support device according to claim 2, characterized in that: There are multiple supporting legs, and each supporting leg is arranged in an array on the lower surface of the bottom support plate.

4. The subsea pipe spanning support device according to claim 2, characterized in that: The supporting legs are of a conical cylinder structure, and the larger cross-section of the conical cylinder structure is fixed to the lower surface of the bottom support plate.

5. The subsea pipeline spanning support device according to any one of claims 1 to 4, characterized in that: The support module comprises: An intermediate connecting member, wherein the intermediate connecting member comprises at least two layers, wherein the intermediate connecting member on the top layer is detachably connected to the top support, and the intermediate connecting member on the bottom layer is detachably connected to the bottom support; Lateral support members, there are multiple lateral support members, each of which is located between the intermediate connecting members on both sides in the height direction, and each of which is circumferentially arranged laterally around the intermediate connecting member; one end of the lateral support member is detachably connected to the intermediate connecting member located above it, and the other end is detachably connected to the intermediate connecting member located below it.

6. The subsea pipe spanning support device according to claim 5, characterized in that: The intermediate connecting member comprises: Main frame; reinforcing ribs, the reinforcing ribs being installed in the main frame; A mounting hole member, the mounting hole member is provided on the outer periphery of the main frame; Wherein, the main frame, the reinforcing ribs and the mounting hole parts are an integrally formed structure.

7. The subsea pipe spanning support device according to claim 6, characterized in that: The lateral support member comprises: Support columns, there are at least two support columns, one end of each support column is detachably inserted into the mounting hole of the intermediate connector located above the support column, and the other end of each support column is detachably inserted into the mounting hole of the intermediate connector located below the support column; Support ribs are installed between two adjacent support columns.

8. The subsea pipeline spanning support device according to any one of claims 1 to 4, characterized in that: The top support comprises: A top support plate, the top support plate being detachably connected to the support frame; an adjusting column, the adjusting column being arranged on the top supporting plate; An adjustment plate is installed above the top support plate through an adjustment component, and the distance between the adjustment plate and the top support plate in the height direction is adjusted by the adjustment component.

9. The subsea pipe spanning support device according to claim 8, characterized in that: The adjustment assembly includes a pad block group and a clamping ring; The adjusting column includes a thick section and a thin section, the thick section is mounted on the upper surface of the top support plate, and the thin section is mounted on the top of the thick section; a strip groove is opened on the thick section along the height direction, and a radially penetrating pin hole is opened on the side of the thin section; each of the pad blocks is sleeved on the thin section, and the bottom is supported on the step formed on the top of the thick section; There are at least two pad groups, each of which forms a cylindrical structure in the circumferential direction; each of the pad groups includes a plurality of pads, and each of the pads is stacked in the height direction; the pads include a hard portion, an elastic layer covering the outer side of the hard portion, and a limiting shaft mounted on the elastic layer; The clamping ring is a detachable two-piece structure, each of the pad groups is fastened in the clamping ring, and the clamping ring is provided with a plurality of axial holes along the height direction, and the limiting shafts pass through the axial holes one by one; a limiting protrusion is provided at the bottom of the clamping ring, and the clamping ring is movably sleeved on the adjusting column in the height direction, and the limiting protrusion is slidably installed in the strip groove; The lower surface of the adjustment plate is provided with a mounting post, and a first clamping ring is provided on the circumference of the mounting post. There are multiple mounting posts, and reinforcing ribs are provided between adjacent mounting posts. A second clamping ring is provided on the top of the clamping ring, and the first clamping ring and the second clamping ring are fixed in an inlaid manner. A robot gripping handle is installed on the side of the adjustment plate, and a pit is provided on the upper surface of the adjustment plate which is coaxial with the mounting column. A through groove is provided on the side of the pit, and an assembly hole is provided on the upper surface of the adjustment plate; a through hole is provided in the mounting column, and the adjustment column passes through the through hole, and a transversely arranged pin is inserted into the pin hole provided on the thin section, and the pin is clamped in the through groove.

10. The subsea pipeline spanning support device according to claim 9, characterized in that: The top support further comprises: A top pressure plate, the top pressure plate is installed above the top support plate, and a plurality of stop rods are provided on the top pressure plate; An eccentric arc plate is installed above the top pressure plate. The thickness of the eccentric arc plate gradually decreases along the arc direction. A plurality of limiting teeth are provided at the bottom of the eccentric arc plate. The limiting teeth are clamped and fixed with the stop rod. The sea pipe to be supported is placed on the eccentric arc plate.

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