Pipe laying ship

Abstract

The invention relates to the technical field of seabed pipe laying, in particular to a pipe laying ship which is characterized in that a first load detection device, a second load detection device and a third load detection device are arranged on a stinger, and the first load detection device is used for detecting vertical pressure applied by a subsea pipe to the stinger; the second load detection device is used for detecting left side transverse force applied to the stinger by the subsea pipeline, and the third load detection device is used for detecting right side transverse force applied to the stinger by the subsea pipeline; the first adjusting device is connected with the ship body and the stinger and can drive the stinger to swing downwards when the detection value of the first load detection device exceeds the vertical standard load, and the stinger is prevented from being damaged due to overload of the vertical load; the ship body is provided with a ballast system, the ballast system can drive the ship body to incline leftwards when the left side transverse force is larger than the horizontal standard load, the ballast system can drive the ship body to incline rightwards when the right side transverse force is larger than the horizontal standard load, and the stinger is prevented from being damaged due to lateral load overload.

Description

Technical Field

[0001] The present invention relates to the technical field of subsea pipe laying, and particularly to a pipe laying vessel. Background Art

[0002] As the core equipment of a deepwater pipe laying vessel, the stinger mainly undertakes the key task of laying subsea pipelines. The stinger is usually arranged at the stern of the pipe laying vessel, and controls the bending curvature of the subsea pipeline when it is lowered, effectively preventing the structural damage of the subsea pipeline due to excessive bending, and ensuring that the subsea pipeline can be laid safely and stably on the seabed.

[0003] The main structure length of the stinger of existing large deepwater pipe laying equipment has exceeded 100 meters, the operation coverage radius has been extended to more than 90 meters, and the operation water depth capacity has exceeded 2000 meters. During the working process of the stinger, it is not only affected by the vertical pressure exerted by the subsea pipeline, but also when the subsea pipeline is affected by the ocean current, a large lateral force will be exerted on the stinger. If the stinger operates under a large load for a long time, it is easy to cause structural damage. Therefore, there is an urgent need to provide a pipe laying vessel that can monitor the force on the stinger and take corresponding measures according to the force condition of the stinger, so as to prevent the structural damage of the stinger. Summary of the Invention

[0004] Based on this, the object of the present invention is to provide a pipe laying vessel, including: a hull, a stinger, a first load detection device, a second load detection device, a third load detection device and a first adjustment device;

[0005] The stinger is hinged to the stern of the hull, and the stinger is used to support and release the subsea pipeline;

[0006] The first load detection device, the second load detection device and the third load detection device are all arranged on the stinger. The first load detection device is used to detect the vertical pressure exerted by the subsea pipeline on the stinger, the second load detection device is used to detect the left lateral force exerted by the subsea pipeline on the stinger, and the third load detection device is used to detect the right lateral force exerted by the subsea pipeline on the stinger;

[0007] The first adjustment device is connected to the hull and the stinger; the first adjustment device is configured to be able to drive the stinger to swing downward when the detection value of the first load detection device exceeds the vertical standard load;

[0008] The hull is provided with a ballast system, and the ballast system is configured to be able to drive the hull to tilt to the left when the left lateral force is greater than the horizontal standard load and drive the hull to tilt to the right when the right lateral force is greater than the horizontal standard load.

[0009] As a preferred solution, the stinger comprises a frame body and a supporting assembly, the frame body is hinged to the stern, and the first adjusting device connects the hull and the frame body;

[0010] The supporting assembly is connected to the frame, and the supporting assembly has a pipe passage groove for the sea pipe to pass through. The first load detection device connects the bottom of the supporting assembly and the frame, the second load detection device connects the left side of the supporting assembly and the frame, and the second load detection device connects the right side of the supporting assembly and the frame.

[0011] As a preferred solution, the bow direction is defined as the front, the stern direction is defined as the rear, the frame body includes at least two sub-frame bodies, each of the sub-frame bodies is connected in sequence from front to back, and the sub-frame body located at the front side of the frame body is hinged to the stern;

[0012] Each of the sub-frames is connected to a plurality of the supporting components arranged in a front-to-back spacing manner. The supporting component located at the rearmost side of the frame is defined as the end supporting component, and the first load detection device, the second load detection device and the second load detection device are all connected to the end supporting component.

[0013] As a preferred solution, the pipe-laying vessel further includes a fourth load detection device;

[0014] The two adjacent sub-frames are defined as a first sub-frame and a second sub-frame, the rear end of the first sub-frame is connected to the front end of the second sub-frame, the supporting assembly located at the front end of the second sub-frame is a middle supporting assembly, and the fourth load detection device is arranged between the bottom of the middle supporting assembly and the second sub-frame.

[0015] As a preferred embodiment, the hull has a power system, which is configured to drive the hull to turn left when the left lateral force is greater than the horizontal standard load or to reduce the sailing speed of the hull when the right lateral force is greater than the horizontal standard load.

[0016] As a preferred solution, the pipe-laying vessel further comprises an inclination sensor, and the inclination sensor is connected to the stinger.

[0017] As a preferred solution, the pipe-laying vessel further comprises a sonar connected to a side of the stinger facing away from the hull, so as to detect the posture of the sea pipe between the stinger and the seabed.

[0018] As a preferred solution, the pipe-laying vessel further comprises a first camera device, and the first camera device is connected to the middle part of the length direction of the stinger.

[0019] As a preferred solution, the pipe-laying vessel further includes a first searchlight, and the first searchlight is connected to the side of the stinger away from the hull.

[0020] As a preferred solution, the pipe-laying vessel further includes a second imaging device, and the second imaging device is connected to the side of the stinger away from the hull.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] For the pipe-laying vessel of the present invention, the stinger for supporting and detaching the submarine pipeline is hinged to the stern of the hull. The first load detection device, the second load detection device, and the third load detection device are all arranged on the stinger. The first load detection device is used to detect the vertical pressure exerted by the submarine pipeline on the stinger, the second load detection device is used to detect the left lateral force exerted by the submarine pipeline on the stinger, and the third load detection device is used to detect the right lateral force exerted by the submarine pipeline on the stinger; the first adjusting device is connected to the hull and the stinger, and the first adjusting device can drive the stinger to swing downward when the detected value of the first load detection device exceeds the vertical standard load, so as to reduce the vertical pressure exerted by the submarine pipeline on the stinger and avoid damage to the stinger due to overloading of the vertical load; the hull is provided with a ballast system, and the ballast system is configured to be able to drive the hull to tilt to the left when the left lateral force is greater than the horizontal standard load and drive the hull to tilt to the right when the right lateral force is greater than the horizontal standard load, so as to reduce the lateral pressure exerted by the submarine pipeline on the stinger and avoid damage to the stinger due to overloading of the lateral load. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic lateral structure diagram of the pipe-laying vessel of the present invention;

[0024] Figure 2 It is a top view of the pipe-laying vessel of the present invention;

[0025] Figure 3 It is a schematic structure diagram of the supporting component;

[0026] Figure 4 It is a side view of the stinger;

[0027] In the figure, 100 is the water surface, 200 is the submarine pipeline, 1 is the hull, 2 is the stinger, 21 is the frame body, 211 is the sub-frame body, 2111 is the sub-frame body main body, 2112 is the left support member, 2113 is the right support member, 22 is the supporting assembly, 221 is the base, 222 is the bottom roller, 223 is the left side seat, 224 is the left roller, 225 is the right side seat, 226 is the right roller, 31 is the first load detection device, 32 is the second load detection device, 33 is the third load detection device, 34 is the fourth load detection device, 4 is the first adjustment device, 5 is the inclination sensor, 6 is the sonar, 71 is the first camera device, 72 is the second camera device, 73 is the first searchlight, 74 is the second searchlight, 75 is the draft sensor. Detailed implementation manners

[0028] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. It should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0030] Such as Figures 1 to 4As shown in the figure, a preferred embodiment of the pipe-laying vessel of the present invention includes: a hull 1, a stinger 2, a first load detection device 31, a second load detection device 32, a third load detection device 33, and a first adjustment device 4; the stinger 2 is hinged to the stern of the hull 1, and the stinger 2 is used to support and release the subsea pipeline 200; the first load detection device 31, the second load detection device 32, and the third load detection device 33 are all arranged on the stinger 2. The first load detection device 31 is used to detect the vertical pressure exerted by the subsea pipeline 200 on the stinger 2, the second load detection device 32 is used to detect the left lateral force exerted by the subsea pipeline 200 on the stinger 2, and the third load detection device 33 is used to detect the right lateral force exerted by the subsea pipeline 200 on the stinger 2; the first adjustment device 4 connects the hull 1 and the stinger 2; the first adjustment device 4 is configured to be able to drive the stinger 2 to swing downward when the detection value of the first load detection device 31 exceeds the vertical standard load; the vertical standard load is set when the stinger 2 is designed, and it is the maximum allowable value of the vertical force on the stinger 2. When the detection value of the first load detection device 31 exceeds the vertical standard load, it indicates that the vertical pressure exerted by the subsea pipeline 200 on the stinger 2 is too large, and it also indicates that the bending degree of the subsea pipeline 200 at the position vertically opposite to the first load detection device 31 is relatively large, that is, the radius of curvature is small. At this time, the first adjustment device 4 drives the stinger 2 to swing downward, which can reduce the bending degree of the subsea pipeline 200, reduce the vertical pressure of the subsea pipeline 200 on the stinger 2, and avoid structural damage of the stinger 2 due to overloading of the vertical load; the hull 1 is provided with a ballast system, and the ballast system is configured to be able to drive the hull 1 to tilt to the left when the left lateral force is greater than the horizontal standard load and drive the hull 1 to tilt to the right when the right lateral force is greater than the horizontal standard load. Specifically, the horizontal standard load is the maximum value of the lateral ballast force that the stinger 2 can withstand when designed. The ballast system includes a left ballast tank, a right ballast tank, and a pump body connecting the left ballast tank and the right ballast tank. When it is necessary to adjust the hull 1 to make the hull 1 tilt to the left, the pump body pumps the water in the right ballast tank into the left ballast tank, increasing the weight of the left ballast tank, so that the hull 1 tilts to the left. After the hull 1 tilts to the left, the left pressure of the subsea pipeline 200 on the stinger 2 is reduced, thus avoiding damage to the stinger 2 due to excessive left load; when the right lateral force is greater than the horizontal standard load, the pump body pumps the water in the left ballast tank into the right ballast tank, making the hull 1 tilt to the right, thus avoiding damage to the stinger 2 due to excessive right load.

[0031] In this embodiment, the bow direction is defined as the front, and the stern direction is defined as the rear. The stinger 2 includes a frame body 21 and a supporting assembly 22. The frame body 21 includes at least two sub-frame bodies 211, and the sub-frame bodies 211 are connected in sequence from front to back. The sub-frame body 211 located on the front side of the frame body 21 is hinged to the stern; a plurality of supporting assemblies 22 arranged at intervals in the front and rear directions are connected to each sub-frame body 211. The supporting assembly 22 located at the rearmost side of the frame body 21 is defined as the end supporting assembly. The first load detection device 31, the second load detection device 32, and the second load detection device 32 are all connected to the end supporting assembly. The laying depth of the submarine pipeline 200 is relatively deep, and the stinger 2 only supports a very short part of the upper end of the submarine pipeline 200. Among the various supporting assemblies 22 on the stinger 2, the end supporting assembly bears a greater force. By monitoring the force borne by the end supporting assembly and avoiding overloading of the end supporting assembly, overloading of the remaining supporting assemblies 22 can be avoided.

[0032] Wherein, the first adjusting device 4 is connected to the hull 1 and the frame body 21; the supporting assembly 22 is connected to the frame body 21. The supporting assembly 22 has a pipe-passing groove for the submarine pipeline 200 to pass through. The first load detection device 31 is connected to the bottom of the supporting assembly 22 and the frame body 21, the second load detection device 32 is connected to the left side of the supporting assembly 22 and the frame body 21, and the second load detection device 32 is connected to the right side of the supporting assembly 22 and the frame body 21. Specifically, the sub-frame body 211 includes a sub-frame body main body 2111, a left support member 2112 fixed on the left side of the sub-frame body main body 2111, and a right support member 2113 fixed on the right side of the sub-frame body main body 2111. The supporting assembly 22 includes a base 221, a bottom roller 222 rotatably arranged on the base 221, a left seat 223, a left roller 224 rotatably arranged on the left seat 223, a right seat 225, and a right roller 226 rotatably arranged on the right seat 225. The length direction of the bottom roller 222 is horizontally arranged in the left-right direction, and the length directions of the left roller 224 and the right roller 226 are both vertically arranged. The left roller 224 and the right roller 226 are opposite to each other left and right. The bottom roller 222, the left roller 224, and the right roller 226 enclose a pipe-passing groove. The first load detection device 31, the second load detection device 32, and the third load detection device 33 are all pressure sensors. The first load detection device 31 is arranged between the base 221 and the sub-frame body main body 2111, and the base 221 and the sub-frame body main body 2111 are connected by bolts; the second load detection device 32 is arranged between the left seat 223 and the left support member 2112, and the left seat 223 and the left support member 2112 are also connected by bolts. The third load detection device 33 is arranged between the right seat 225 and the right support member 2113, and the right seat 225 and the right support member 2113 are also connected by bolts.

[0033] Among them, in addition to the end components, the connection nodes between two sub-frame bodies 211 are also the positions where the stabbing board 2 is prone to damage. In this embodiment, the pipe-laying vessel further includes a fourth load detection device 34. Define two adjacent sub-frame bodies 211 before and after as the first sub-frame body and the second sub-frame body respectively. The rear end of the first sub-frame body is connected to the front end of the second sub-frame body. The supporting component 22 at the foremost end of the second sub-frame body is the middle supporting component. The fourth load detection device 34 is arranged between the bottom of the middle supporting component and the second sub-frame body. The fourth load detection device 34 can detect the supporting component 22 at the connection node between two adjacent sub-frame bodies 211, and monitor whether the connection node between two adjacent sub-frame bodies 211 is overloaded through the load of the middle supporting component.

[0034] In this embodiment, the hull 1 has a power system, and the power system is configured to be able to drive the hull 1 to turn left when the lateral force on the left side is greater than the horizontal standard load or reduce the sailing speed of the hull 1 when the lateral force on the right side is greater than the horizontal standard load. Specifically, by reducing the sailing speed, the acting force of water flow, wind force, etc. on the submarine pipeline 200 can be reduced, thereby affecting the attitude of the submarine pipeline 200 and reducing the lateral load exerted by the submarine pipeline 200 on the stabbing board 2.

[0035] In this embodiment, the pipe-laying vessel further includes an inclination sensor 5, and the inclination sensor 5 is connected to the stabbing board 2. Specifically, the inclination sensor 5 is arranged in the middle of the stabbing board 2 in the length direction. The inclination sensor 5 can monitor the up-and-down inclination angle of the stabbing board 2, facilitating the operator to control the inclination angle of the stabbing board 2 within the set range and ensuring that the bending curvature of the submarine pipeline 200 during laying is within a reasonable range.

[0036] In this embodiment, the pipe-laying vessel further includes a sonar 6, and the sonar 6 is connected to the side of the stabbing board 2 facing away from the hull 1. The sonar 6 can detect the attitude of the submarine pipeline 200 between the end of the stabbing board 2, that is, the end supporting component and the seabed, enabling the operator to know the attitude of the submarine pipeline 200 during the laying process and facilitating the operator to analyze the relationship between the load on the bracket and the attitude of the submarine pipeline 200. In this embodiment, the sonar 6 is arranged on the left support member 2112 or the right support member 2113 connected to the end supporting component.

[0037] In this embodiment, the pipe-laying vessel further includes a first camera device 71, and the first camera device 71 is connected to the middle of the stabbing board 2 in the length direction. The first camera device 71 can capture the conditions of a part of the submarine pipeline 200 and the supporting bracket below the water surface 100 and above the sonar 6.

[0038] Further, the pipe-laying vessel further includes a first searchlight 73, and the first searchlight 73 is connected to the side of the stinger 2 away from the hull 1. The first searchlight 73 can provide sufficient illumination to the first imaging device 71 to ensure the clarity of underwater monitoring. In this embodiment, a plurality of first searchlights 73 are arranged at intervals along the length direction of the stinger, so as to ensure sufficient brightness in the overall length direction of the stinger 2.

[0039] In this embodiment, the pipe-laying vessel further includes a second imaging device 72, and the second imaging device 72 is connected to the side of the stinger 2 away from the hull 1. Specifically, the second imaging device 72 is located above the water surface 100 and can monitor the conditions of the stinger 2 and the submarine pipeline 200 on the water surface 100. In this embodiment, a plurality of second searchlights 74 arranged on the water are further included, and the second searchlights 74 provide illumination for the second imaging device 72.

[0040] In this embodiment, in order to facilitate the operator to judge the water entry depth of the stinger 2, a draft sensor 75 is connected to the end of the stinger 2 away from the hull 1.

[0041] In this embodiment, the first adjusting device 4 is a marine crane arranged at the stern of the ship. The boom of the marine crane is connected to the middle of the stinger 2, and the marine crane can drive the stinger 2 to swing up and down to realize the adjustment of the up and down inclination angle of the stinger 2.

[0042] The pipe-laying vessel of this embodiment further includes a centralized control and display center, and the centralized control and display center has a display device. The sonar 6, the first imaging device 71, the second imaging device 72, the first load detection device 31, the second load detection device 32, the third load detection device 33, the fourth load detection device 34 and the draft sensor 75 are all signal-connected to the centralized control and display center. The centralized control and display center is used to display the monitoring data in real time, intuitively reflect the state of the pipe-laying operation, can effectively improve the work efficiency of the pipe-laying operation personnel, reduce the labor intensity, and improve the ship operation benefit.

[0043] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A pipe-laying vessel, characterized in that, Including: A hull (1), a stinger (2), a first load detection device (31), a second load detection device (32), a third load detection device (33), and a first adjustment device (4); The stinger (2) is hinged to the stern of the hull (1), and the stinger (2) is used for receiving and releasing a submarine pipeline (200); The first load detection device (31), the second load detection device (32), and the third load detection device (33) are all arranged on the stinger (2). The first load detection device (31) is used for detecting the vertical pressure exerted by the submarine pipeline (200) on the stinger (2), the second load detection device (32) is used for detecting the left lateral force exerted by the submarine pipeline (200) on the stinger (2), and the third load detection device (33) is used for detecting the right lateral force exerted by the submarine pipeline (200) on the stinger (2); The first adjustment device (4) connects the hull (1) and the stinger (2); the first adjustment device (4) is configured to be able to drive the stinger (2) to swing downward when the detection value of the first load detection device (31) exceeds the vertical standard load; The hull (1) is provided with a ballast system, and the ballast system is configured to be able to drive the hull (1) to tilt to the left when the left lateral force is greater than the horizontal standard load and drive the hull (1) to tilt to the right when the right lateral force is greater than the horizontal standard load.

2. The pipe-laying vessel according to claim 1, wherein, The stinger (2) includes a frame body (21) and a supporting assembly (22). The frame body (21) is hinged to the stern, and the first adjustment device (4) connects the hull (1) and the frame body (21); The supporting assembly (22) is connected to the frame body (21). The supporting assembly (22) has a pipe-passing groove for the submarine pipeline (200) to pass through. The first load detection device (31) connects the bottom of the supporting assembly (22) to the frame body (21), the second load detection device (32) connects the left side of the supporting assembly (22) to the frame body (21), and the second load detection device (32) connects the right side of the supporting assembly (22) to the frame body (21).

3. The pipe-laying vessel according to claim 2, wherein Defining the bow direction as the front and the stern direction as the rear, the frame body (21) includes at least two sub-frame bodies (211). Each sub-frame body (211) is connected in sequence from front to back. The sub-frame body (211) located on the front side of the frame body (21) is hinged to the stern; A plurality of the supporting assemblies (22) arranged at intervals in the front-rear direction are connected to each sub-frame body (211). Defining the supporting assembly (22) located at the rearmost side of the frame body (21) as the end supporting assembly, the first load detection device (31), the second load detection device (32), and the second load detection device (32) are all connected to the end supporting assembly.

4. The pipe-laying vessel according to claim 3, characterized in that, The pipe-laying vessel further includes a fourth load detection device (34); Two front and rear adjacent sub-frames (211) are defined as a first sub-frame and a second sub-frame, respectively; the rear end of the first sub-frame is connected to the front end of the second sub-frame; the supporting assembly (22) located at the front end of the second sub-frame is a middle supporting assembly; and the fourth load detection device (34) is arranged between the bottom of the middle supporting assembly and the second sub-frame.

5. The pipe-laying vessel according to claim 1, wherein, The hull (1) has a power system, which is configured to drive the hull (1) to turn left when the left lateral force is greater than the horizontal standard load, or to reduce the sailing speed of the hull (1) when the right lateral force is greater than the horizontal standard load.

6. The pipe-laying vessel according to claim 1, characterized in that, The pipe-laying vessel further comprises an inclination sensor (5), wherein the inclination sensor (5) is connected to the stinger (2).

7. The pipe-laying vessel according to claim 1, wherein, The pipe-laying vessel further comprises a sonar (6), which is connected to a side of the stinger (2) facing away from the hull (1) to detect the posture of the sea pipe (200) between the stinger (2) and the seabed.

8. The pipe-laying vessel according to claim 1, wherein The pipe-laying vessel further comprises a first camera device (71), wherein the first camera device (71) is connected to the middle portion of the stinger (2) in the length direction.

9. The pipe-laying vessel according to claim 8, wherein, The pipe-laying vessel further comprises a first searchlight (73), wherein the first searchlight (73) is connected to a side of the stinger (2) facing away from the hull (1).

10. The pipe-laying vessel according to claim 8, wherein, The pipe-laying vessel further comprises a second camera device (72), wherein the second camera device (72) is connected to a side of the stinger (2) facing away from the hull (1).

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