阅读说明：本技术 一种深水海底管道用管枕 (Pipe pillow for deepwater submarine pipeline ) 是由 贾旭 黄�俊 王德军 邹星 罗世勇 贾鲁生 石云 倪侃侃 刘毅 李丽玮 唐丕鑫 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种深水海底管道用管枕,包括左防沉板、中间防沉板、右防沉板和1根海底管道支撑梁,左防沉板和右防沉板分别设置于中间防沉板的两侧,海底管道支撑梁设置在左防沉板、中间防沉板和右防沉板上。本发明公开的深水海底管道用管枕,通过增大管枕传递至海床的受力面积和减少整个管枕与海底管道的接触面积,有效激发海底管道的侧向位移,从而有效释放海底管道的内部轴向力,避免海底管道发生高温屈曲,可广泛应用于需要缓解高温高压引起的深水海底管道侧向屈曲的深水海底管道中。(The invention discloses a pipe pillow for a deepwater submarine pipeline, which comprises a left anti-sinking plate, a middle anti-sinking plate, a right anti-sinking plate and 1 submarine pipeline supporting beam, wherein the left anti-sinking plate and the right anti-sinking plate are respectively arranged on two sides of the middle anti-sinking plate, and the submarine pipeline supporting beam is arranged on the left anti-sinking plate, the middle anti-sinking plate and the right anti-sinking plate. The pipe pillow for the deepwater submarine pipeline disclosed by the invention can effectively stimulate the lateral displacement of the submarine pipeline by increasing the stress area of the pipe pillow transmitted to the seabed and reducing the contact area of the whole pipe pillow and the submarine pipeline, so that the internal axial force of the submarine pipeline is effectively released, the submarine pipeline is prevented from high-temperature buckling, and the pipe pillow can be widely applied to the deepwater submarine pipeline needing to relieve the lateral buckling of the deepwater submarine pipeline caused by high temperature and high pressure.)

1. A pipe pillow for a deepwater submarine pipeline is characterized by comprising a left anti-sinking plate (11), a middle anti-sinking plate (12), a right anti-sinking plate (13) and 1 submarine pipeline supporting beam (2),

the left anti-sinking plate (11) and the right anti-sinking plate (13) are respectively arranged at two sides of the middle anti-sinking plate (12), the bottom surfaces of the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13) are used for being placed on the seabed,

the bottom of the submarine pipeline supporting beam (2) is fixedly connected with the upper surfaces of the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13), and the top of the submarine pipeline supporting beam (2) is used for bearing a submarine pipeline.

2. The pipe pillow for deep water submarine pipelines according to claim 1, wherein the left anti-settling plate (11) and the right anti-settling plate (13) are identical in size and shape, the left anti-settling plate (11) and the right anti-settling plate (13) are symmetrically arranged on both sides of the middle anti-settling plate (12) with the longitudinal center line of the middle anti-settling plate (12) as a symmetry axis, and the submarine pipeline support beam (2) is arranged on the connecting line of the center points of the outer sides of the left anti-settling plate (11) and the right anti-settling plate (13).

3. The pipe pillow for deep water submarine pipelines according to claim 1,

the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13) are rectangular in shape, rectangular frames (4) are welded on four sides of the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13),

the left side prevents sinking plate (11), middle heavy plate (12) and the rectangular frame (4) middle part interval welding of the right side heavy plate (13) has a plurality of buttress (5), submarine pipeline supporting beam (2) is the pipe structure, submarine pipeline supporting beam (2) welding is in left side heavy plate (11), middle heavy plate (12) and on buttress (5) of the right side heavy plate (13).

4. The pipe pillow for deep water submarine pipelines according to claim 3,

the rectangular frame (4) is formed by splicing I-shaped steel.

5. The pipe pillow for deep water submarine pipelines according to claim 1,

the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13) are provided with a plurality of lifting lugs (6) at uniform intervals.

6. The pipe pillow for deep water submarine pipelines according to claim 5,

the lifting lug (6) is of a reinforced concrete structure.

7. The pipe pillow for the deep water submarine pipeline according to claim 1, wherein the surfaces of the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13) are uniformly provided with a plurality of water filtering holes (7) at intervals.

8. The pipe pillow for deep water submarine pipelines according to claim 1,

and a polyurethane coating (20) is sprayed on the submarine pipeline support beam (2).

9. Pipe pillow for deep water subsea pipelines according to claim 3, characterized by 12 stabilising plates (3),

the anti-sinking plate comprises a left anti-sinking plate (11), a middle anti-sinking plate (12) and a right anti-sinking plate (13), wherein the periphery of the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13) extend upwards to form an apron plate (8), two partition bars are arranged in the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13) and perpendicular to a submarine pipeline supporting beam (2), four grids are formed in the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13) respectively, and the left anti-sinking plate (11), the middle anti-sinking plate (12) and the right anti-sinking plate (13) are provided with 4 stabilizing plates (3) and are placed in the four grids respectively.

10. The pipe pillow for deep water submarine pipelines according to claim 9,

the stabilizing plate (3) is a reinforced concrete structural plate.

Technical Field

The invention relates to the technical field of submarine pipeline construction, in particular to a pipe pillow for a deepwater submarine pipeline.

Background

With the development of deepwater oil and gas fields, the development mode of a full-underwater production system is more and more common; the high-temperature and high-pressure material flow is directly conveyed to a jacket platform or a floating platform from a conveying wellhead through a submarine pipeline. High temperature and high pressure streams present a series of technical challenges to subsea pipelines, one of which is: under the constraint action of seabed soil, high-temperature and high-pressure oil gas conveyed by the submarine pipeline generates huge axial force on the steel submarine pipeline, if the large axial force cannot be effectively released, small external force can induce the whole or local lateral buckling of the submarine pipeline, the buckling amplitude is too large, the pipeline is cracked, unstable and damaged, and the operation safety of the submarine pipeline is seriously threatened.

In addition, some deepwater submarine pipelines are usually laid on the seabed during construction and are not buried in soil, so that when the temperature of a conveying wellhead of the submarine pipeline is high, the submarine pipeline is easily affected by external force to cause lateral buckling. Therefore, how to relieve the lateral buckling of the submarine pipeline caused by high temperature and high pressure becomes a difficulty in the structural design of the submarine pipeline.

Disclosure of Invention

The invention aims to provide a pipe pillow for a deep-water submarine pipeline, which is used for solving the problem of lateral buckling of the submarine pipeline caused by high temperature and high pressure.

The invention provides a pipe pillow for a deep-water submarine pipeline, which comprises a left anti-sinking plate, a middle anti-sinking plate, a right anti-sinking plate and 1 submarine pipeline supporting beam, wherein the left anti-sinking plate and the right anti-sinking plate are respectively arranged on two sides of the middle anti-sinking plate, the bottom surfaces of the left anti-sinking plate, the middle anti-sinking plate and the right anti-sinking plate are used for being placed on a seabed, the bottom of the submarine pipeline supporting beam is fixedly connected with the upper surfaces of the left anti-sinking plate, the middle anti-sinking plate and the right anti-sinking plate, and the top of the submarine pipeline supporting beam is used for bearing the submarine pipeline.

Preferably, the left anti-settling plate and the right anti-settling plate are the same in size and shape, the left anti-settling plate and the right anti-settling plate are symmetrically arranged on two sides of the middle anti-settling plate by taking the longitudinal center line of the middle anti-settling plate as a symmetry axis, and the submarine pipeline supporting beam is arranged on a connecting line of the central points of the outer sides of the left anti-settling plate and the right anti-settling plate.

Preferably, the left side prevent sinking the board in the middle of prevent sinking the board with the shape of the board that sinks on the right side is the rectangle, the left side prevent sinking the board in the middle of prevent sinking the board with the four sides welding of the board that sinks on the right side has rectangular frame, the left side prevent sinking the board in the middle of prevent sinking the board with the rectangular frame middle part interval welding of the board that sinks on the right side has a plurality of buttresses, submarine pipeline supporting beam is the pipe structure, submarine pipeline supporting beam welding is in the left side prevent sinking the board in the middle of prevent sinking the board with on the buttress of the board is prevented sinking on the right side.

Preferably, the rectangular frame is formed by splicing I-shaped steel.

Preferably, a plurality of lifting lugs are uniformly arranged on the left anti-sinking plate, the middle anti-sinking plate and the right anti-sinking plate at intervals.

Preferably, the lifting lug is of a reinforced concrete structure.

Preferably, a plurality of water filtering holes are uniformly arranged on the surfaces of the left anti-settling plate, the middle anti-settling plate and the right anti-settling plate at intervals.

Preferably, the submarine pipeline support beam is sprayed with a polyurethane coating.

Preferably, the marine floating platform further comprises 12 stabilizing plates, the peripheries of the left anti-sinking plate, the middle anti-sinking plate and the right anti-sinking plate extend upwards to form a skirt board, two partition bars are arranged in the left anti-sinking plate, the middle anti-sinking plate and the right anti-sinking plate and perpendicular to a submarine pipeline supporting beam, four grids are formed in the left anti-sinking plate, the middle anti-sinking plate and the right anti-sinking plate respectively by the skirt board at the periphery and the two partition bars and the submarine pipeline supporting beam inside the skirt board at the periphery, and the left anti-sinking plate, the middle anti-sinking plate and the right anti-sinking plate are all provided with 4 stabilizing plates and are placed in the four grids respectively.

Preferably, the stabilizing plate is a reinforced concrete structural plate.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention discloses a pipe pillow for a deepwater submarine pipeline, wherein three anti-sinking plates of the pipe pillow can be placed on the submarine pipeline in advance, the submarine pipeline is laid on a submarine pipeline supporting beam of the pipe pillow, the three anti-sinking plates are connected into a whole through the submarine pipeline supporting beam to realize load transmission, on one hand, the stress area of the pipe pillow transmitted to a seabed is increased, on the other hand, the contact area of the whole pipe pillow and the submarine pipeline is reduced, and the submarine pipeline can effectively prevent the lateral displacement of the submarine pipeline under the action of smaller axial force, so that the internal axial force of the submarine pipeline is effectively released, and the submarine pipeline is prevented from high-temperature buckling. The height and the length of the whole pipe pillow can be designed and adjusted according to the lateral displacement of the submarine pipeline, and the marine installation is convenient.

(2) According to the pipe pillow for the deepwater submarine pipeline, the skirt plate structure design can resist lateral sliding, the design of the stabilizing plate is increased, the stability of the pipe pillow on a seabed is improved, the anti-sinking plate is provided with the water filtering holes, splashing in the hoisting and water entering process can be prevented, and the up-and-down pressure after the pipe pillow is placed on the seabed can be balanced; polyurethane material with a certain thickness is sprayed on the submarine pipeline support beam, so that the lateral friction resistance of the submarine pipeline is reduced to the maximum extent; the pipe pillow has no sharp-pointed protruding structure, and can effectively prevent the risk that the side turning of the sleeper structure is caused by trawl load in marine fishery activities.

Drawings

Fig. 1 is a three-dimensional view of a submarine pipeline laid on a pipe pillow according to embodiment 1 of the present invention;

fig. 2 is a top view of a submarine pipeline laid on a pipe pillow according to embodiment 1 of the present invention;

fig. 3 is a side view of a submarine pipeline laid on a pipe pillow according to embodiment 1 of the present invention;

fig. 4 is a cross-sectional view of a submarine pipeline laid on a pipe pillow according to embodiment 1 of the present invention.

Detailed Description

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Example 1

Embodiment 1 provides a pipe pillow for a deep-water submarine pipeline, and the structure thereof will be described in detail below.

Referring to fig. 1 to 4, the pipe pillow for deep-water submarine pipelines, on which a submarine pipeline 100 is laid, includes a left anti-sink plate 11, a middle anti-sink plate 12, a right anti-sink plate 13, and 1 submarine pipeline support beam 2,

the left anti-sinking plate 11 and the right anti-sinking plate 13 are respectively arranged at two sides of the middle anti-sinking plate 12, and the bottom surfaces of the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 are used for being placed on the seabed,

the bottom of the submarine pipeline supporting beam 2 is fixedly connected with the upper surfaces of the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13, and the top of the submarine pipeline supporting beam 2 on the middle anti-sinking plate 12 is used for bearing a submarine pipeline 100.

The left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 are connected into a whole through the submarine pipeline supporting beam 2, so that load transmission is realized, on one hand, the stress area of the pipe pillow transmitted to the seabed is increased, and on the other hand, the contact area of the whole pipe pillow and the submarine pipeline 100 is reduced.

In order to enable the pipe pillow to be stressed uniformly, the left anti-sinking plate 11 and the right anti-sinking plate 13 are identical in size and shape, the left anti-sinking plate 11 and the right anti-sinking plate 13 are symmetrically arranged on two sides of the middle anti-sinking plate 12 by taking the longitudinal center line of the middle anti-sinking plate 12 as a symmetry axis, and the submarine pipeline supporting beam 2 is arranged on a connecting line of the central points of the outer sides of the left anti-sinking plate 11 and the right anti-sinking plate 13.

The pipe sleepers are stressed uniformly, so that the pipe sleepers are favorable for being placed on the seabed and are also favorable for integral hoisting.

Specifically, the left, middle and right anti-settling plates 11, 12 and 13 are rectangular in shape, and the rectangular frame 4 is welded to four sides of the left, middle and right anti-settling plates 11, 12 and 13. A plurality of buttresses 5 are welded at intervals in the middle of a rectangular frame 4 of a left anti-sinking plate 11, a middle anti-sinking plate 12 and a right anti-sinking plate 13, in an optimal mode, three buttresses 5 are welded on each anti-sinking plate and are respectively arranged on two sides and in the middle of the central line of each anti-sinking plate, a submarine pipeline supporting beam 2 is of a circular tube structure, and the submarine pipeline supporting beam 2 is welded on the buttresses 5 of the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13.

Preferably, the rectangular frame 4 is formed by splicing I-steel.

For the convenience of hoisting, a plurality of lifting lugs 6 are uniformly arranged on the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 at intervals.

Preferably, the lifting lug 6 is a reinforced concrete structure.

In order to avoid splashing caused by the hoisting process of the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 into water and balance the up-down pressure after the seabed is placed, a plurality of water filtering holes 7 are uniformly arranged on the surfaces of the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 at intervals.

In order to reduce the lateral friction of the submarine pipeline, a polyurethane coating 20 is sprayed on the submarine pipeline support beam 2.

In order to further improve the lateral slippage resistance of the pipe pillow and improve the stability of the pipe pillow on the seabed, the pipe pillow for the deep-water submarine pipeline further comprises 12 stability increasing plates 3, the peripheries of the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 extend upwards to form a skirt board 8, two partition strips are arranged in the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 and perpendicular to a submarine pipeline supporting beam 2, the skirt board 8 at the periphery, the two partition strips inside and the submarine pipeline supporting beam 2 form four grids in the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 respectively, and the left anti-sinking plate 11, the middle anti-sinking plate 12 and the right anti-sinking plate 13 are all provided with 4 stability increasing plates 3 and are placed in the four grids respectively. Specifically, the stability augmentation plate 3 is a reinforced concrete structural plate.

The pipe pillow has no sharp-pointed protruding structure, can effectively prevent the risk that the pipe pillow turns on one's side due to trawl load in marine fishery activities, and can be integrally hoisted to launch by a crane of an engineering ship after being assembled on land.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.