Ship anchor and fishing net preventing device for submarine pipeline
By designing an anchor and fishing net device for subsea pipelines, the impact energy is absorbed by using glass fiber composite materials and steering structures, the problem of vulnerability in subsea pipelines is solved and safe and stable protection of subsea pipelines is achieved.
Patent Information
- Application Number
- CN202422394419.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the prior art, the subsea pipeline is susceptible to damage when facing the impact of anchors and fishing nets, and the trench backfilling method is inefficient and costly, so it cannot be effectively protected.
Design a subsea pipeline anti-anchor and fishing net device, including a conventional section protective cover and a pipe head section protective cover, adopts glass fiber composite material, and sets up lifting holes and steering structures to absorb impact energy through the steering structure and glass fiber composite material to avoid hooking.
Effectively isolate the direct impact of the anchor and fishing net on the pipeline, with good passability, glass fiber material absorbs impact energy, and reuses it many times to ensure the safe and stable operation of the pipeline.
Smart Images
Figure CN223049699U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of subsea pipeline protection, and particularly relates to an anti-ship anchor and fishing net device for subsea pipelines. Background Art
[0002] Newly built subsea pipelines inevitably intersect with fishing activities and ship navigation areas, which also leads to an increase in the frequency of third-party accidents such as anchor dropping and fishing net dragging, especially the impact of dropped anchors on pipelines, the dragging of dragged anchors on pipelines, the dragging of fishing nets on pipe head parts, and the impact of tow net plates on pipelines. If effective protective measures are not taken, subsea pipelines will face a great risk of third-party damage, and the safety of subsea oil and gas transportation will be severely challenged.
[0003] Currently, in order to prevent subsea pipelines from being damaged by dropped anchors, dragged anchors, and dragged nets, methods such as trenching and backfilling, burying with crushed stones, cement mattress, and flexible mattress are mostly used in actual projects, but there are problems such as high cost, harsh application conditions, short service life, and insufficient protection flexibility. Especially to save costs, natural backfilling is often used for trenching and burying pipelines, and its backfilling speed is slow and time-consuming. At this time, the pipeline is easily damaged by external forces such as dropped anchors.
[0004] Therefore, there is an urgent need to design an anti-ship anchor and fishing net device for subsea pipelines to solve the problems of anti-ship anchor and fishing net for subsea pipelines mentioned above. Summary of the Utility Model
[0005] In order to solve the technical problem that natural backfilling is often used for trenching and burying pipelines in the background art, and its backfilling speed is slow and time-consuming. At this time, the pipeline is easily damaged by external forces such as dropped anchors, an anti-ship anchor and fishing net device for subsea pipelines is provided to solve the problems of anti-ship anchor and fishing net for subsea pipelines.
[0006] To achieve the above object, the specific technical solution of the anti-ship anchor and fishing net device for subsea pipelines of the utility model is as follows:
[0007] An anti-ship anchor and fishing net device for subsea pipelines includes a conventional section protection cover and a pipe head section protection cover. The pipe head section protection cover is connected to the conventional section protection cover through a transition section protection cover. The conventional section protection cover is arranged above the subsea pipeline, and the pipe head section protection cover is arranged at the connection between subsea pipelines. Both the pipe head section protection cover and the conventional section protection cover are provided with hoisting holes to facilitate the hoisting of the conventional section protection cover and the pipe head section protection cover. A detachable baffle for the pipe head section is slidably arranged on the pipe head section protection cover.
[0008] Furthermore, a plurality of conventional section protection covers are arranged on the subsea pipeline, and the plurality of conventional section protection covers are connected in sequence.
[0009] Furthermore, one end of the conventional section protective cover is provided with a steering structure, and the steering structures of adjacent conventional section protective covers are connected to adapt to the curvature of the submarine pipeline body.
[0010] Furthermore, the steering structure includes a first semi-circular buckle and a second semi-circular buckle, which are rotatably connected between the first semi-circular buckle and the second semi-circular buckle, so that the conventional section protective cover changes the setting direction along with the curvature of the submarine pipeline body.
[0011] Furthermore, the conventional section protective cover is composed of a top cover plate and a buried protection plate. The buried protection plate is arranged on both sides of the top cover plate, and the top cover plate is provided with a first lifting hole.
[0012] Furthermore, the buried protection plate is buried in the seabed to stabilize the pipeline.
[0013] Furthermore, a clamping groove is provided on the pipe head section protective cover, and a detachable baffle for the pipe head section is arranged in the clamping groove, and the detachable baffle for the pipe head section slides along the clamping groove.
[0014] Furthermore, a second lifting hole is provided on the pipe head section protective cover for lifting and placing the pipe head section protective cover.
[0015] Furthermore, a plurality of holes are provided on both sides of the pipe head section protective cover and the conventional section protective cover to facilitate water penetration during launching.
[0016] Furthermore, cement blocks are provided on both sides of the pipe head section protective cover and the conventional section protective cover to stably arrange the pipe head section protective cover and the conventional section protective cover.
[0017] The submarine pipeline anti-ship anchor and fishing net device of the present utility model has the following advantages:
[0018] By isolating the direct impact of the ship anchor and fishing net on the pipeline through the conventional section protective cover and the pipe head section protective cover, and at the same time having good passability for the ship anchor and fishing net on its outer surface, the buried part of the conventional section protective cover is designed with a smooth arc plus rounded corners, so the ship anchor and fishing net cannot cause hooking and other conditions. The glass fiber composite material used can absorb the impact energy of the ship anchor and fishing net to the maximum extent, and can prevent or reduce the impact on the pipeline repeatedly, fundamentally ensuring the safe and stable operation of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of the conventional section protective cover of the submarine pipeline anti-ship anchor and fishing net device of the present utility model;
[0020] Figure 2 is a schematic cross-sectional shape diagram of the conventional section protective cover of the submarine pipeline anti-ship anchor and fishing net device of the present utility model;
[0021] Figure 3 is a schematic structural diagram of the pipe head section protective cover of the submarine pipeline anti-ship anchor and fishing net device of the present utility model;
[0022] Figure 4 This is the front view of the protective cover for the pipe head section of the ship anchor and fishing net prevention device for the submarine pipeline of the present utility model;
[0023] Figure 5 This is the schematic diagram of the steering structure of the ship anchor and fishing net prevention device for the submarine pipeline of the present utility model;
[0024] Figure 6 This is the schematic diagram of the structure of the protective cover for the transition section of the ship anchor and fishing net prevention device for the submarine pipeline of the present utility model.
[0025] Explanation of the markings in the figure:
[0026] 1. Protective cover for the conventional section; 2. Protective cover for the pipe head section; 3. Protective cover for the transition section; 4. Steering structure; 41. First semi-circular buckle; 42. Second semi-circular buckle; 5. First lifting hole; 6. Second lifting hole; 7. Top cover plate; 8. Buried protection plate; 9. Removable baffle for the pipe head section. Detailed implementation manners
[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present utility model.
[0028] Those skilled in the art can understand that although some of the embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present utility model and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.
[0029] Next, refer to the attached Figure 1 to the attached Figure 6 to describe the ship anchor and fishing net prevention device for the submarine pipeline of the present utility model.
[0030] As Figure 1 and Figure 6As shown in the figure, the anti-ship anchor and fishing net device for submarine pipelines in the present utility model includes a conventional section protective cover 1 and a pipe head section protective cover 2. The pipe head section protective cover 2 is connected to the conventional section protective cover 1 through a transition section protective cover 3. The conventional section protective cover 1 is arranged above the submarine pipeline, and the pipe head section protective cover 2 is arranged at the connection between submarine pipelines. Both the pipe head section protective cover 2 and the conventional section protective cover 1 are provided with hoisting holes to hoist the conventional section protective cover 1 and the pipe head section protective cover 2. A detachable baffle 9 for the pipe head section is slidably arranged on the pipe head section protective cover 2.
[0031] The direct impact of ship anchors and fishing nets on the pipeline is isolated by the conventional section protective cover 1 and the pipe head section protective cover 2. At the same time, the outer surface has good passability for ship anchors and fishing nets. The buried part of the conventional section protective cover 1 is designed with a smooth arc plus rounded corners, so the ship anchors and fishing nets cannot be hooked. The fiberglass composite material used can absorb the impact energy of ship anchors and fishing nets to the greatest extent, and can prevent or reduce the impact on the pipeline repeatedly, fundamentally ensuring the safe and stable operation of the pipeline.
[0032] Furthermore, as Figure 1 and Figure 5 shown in the figure, a plurality of conventional section protective covers 1 are arranged on the submarine pipeline, and the plurality of conventional section protective covers 1 are connected in sequence. A steering structure 4 is arranged at one end of the conventional section protective cover 1, and the steering structures 4 of adjacent conventional section protective covers 1 are connected to adapt to the curvature of the submarine pipeline body. The steering structure 4 includes a first semi-circular buckle 41 and a second semi-circular buckle 42, and the first semi-circular buckle 41 and the second semi-circular buckle 42 are rotatably connected to enable the conventional section protective cover 1 to change the setting direction along with the curvature of the submarine pipeline body.
[0033] In this embodiment, preferably, the submarine pipeline is laid on the seabed, and the laying direction of the submarine pipeline will change according to the usage requirements or seabed conditions. Therefore, the submarine pipeline will generate corresponding curvature to meet the laying needs.
[0034] A plurality of conventional section protective covers 1 are arranged on the submarine pipeline body, and the plurality of conventional section protective covers 1 are connected end to end in sequence to protect the submarine pipeline body. A steering structure 4 is arranged at the end of the conventional section protective cover 1 to connect two adjacent conventional section protective covers 1, thereby adapting to the curvature of the submarine pipeline.
[0035] Preferably, the rotational connection is realized through the first semi-circular buckle 41 and the second semi-circular buckle 42, so that the setting direction of the conventional section protective cover 1 changes along with the curvature of the submarine pipeline body.
[0036] Furthermore, as Figure 2 and Figure 4As shown, the conventional section protective cover 1 is composed of a top cover plate 7 and a buried protection plate 8. The buried protection plate 8 is arranged on both sides of the top cover plate 7, and a first lifting hole 5 is provided on the top cover plate 7; the buried protection plate 8 is buried in the seabed to stabilize the pipeline; a clamping groove is provided on the pipe head section protective cover 2, and a detachable baffle 9 for the pipe head section is arranged in the clamping groove, and the detachable baffle 9 for the pipe head section slides along the clamping groove.
[0037] In this embodiment, preferably, the conventional section protective cover 1 is composed of a top cover plate 4 and buried protection plates 5 connected by rotating shafts on both sides. The buried protection plates 5 are easy to be fixed inside the seabed. First lifting holes 5 are provided on both sides of the top cover plate 7, which is convenient for the installation of the conventional section protective cover 1.
[0038] A clamping groove is provided on the pipe head section protective cover 2, and a detachable baffle 9 for the pipe head section slides in the symmetrically arranged clamping grooves. Preferably, the detachable baffle 9 for the pipe head section is a cover that can be in two states: free and fixed, which can be disassembled and installed more conveniently when replacing the pipe head, and can improve the utilization rate of the pipe head protective cover 2.
[0039] The conventional section protective cover 1 and the pipe head section protective cover 2 are the main protective structures, both of which are made of fiberglass composite materials; they are fixed on the seabed by their own weights, completely covering the submarine pipeline to prevent the ship anchor and fishing net from directly impacting the pipeline. The semi-hexagonal structure and the design of the fiberglass composite material can better absorb the impact energy. The buried part on the outside of the protective cover is designed with a smooth arc plus rounded corners, and the buried depth is deeper than that of the anchor to prevent snagging.
[0040] Furthermore, as Figure 1 and Figure 3 shown, a second lifting hole 6 is provided on the pipe head section protective cover 2 for hoisting the pipe head section protective cover 2; a plurality of holes are provided on both sides of the pipe head section protective cover 2 and the conventional section protective cover 1 to facilitate water penetration when launching; cement weights are provided on both sides of the pipe head section protective cover 2 and the conventional section protective cover 1 to stably arrange the pipe head section protective cover 2 and the conventional section protective cover 1.
[0041] In this embodiment, preferably, the pipe head section protective cover 2 is hoisted to the seabed through the second lifting hole 6, and a plurality of holes are provided on both sides of the pipe head section protective cover 2 and the conventional section protective cover 1 to allow water to penetrate when the protective cover is launched, making it easier to lower the protective cover to the seabed; cement weights and other weights are provided on both sides of the pipe head section protective cover 2 and the conventional section protective cover 1 to make the pipe head section protective cover 2 and the conventional section protective cover 1 more stable.
[0042] Preferably, the inclined planes on both sides of the conventional section protective cover 1 and the pipe head section protective cover 2 are designed at an angle of 58 degrees, which can change the direction of the impact force when being impacted. At the same time, the overall protective cover has no protrusions and is smooth, so that the ship anchor and fishing net can easily slide over without snagging.
[0043] The conventional section protective cover 1 and the pipe head section protective cover 2 are designed with horizontal plates. While increasing the stability of the protective cover placed on the seabed, concrete weights can be installed on the horizontal plates to increase the load, so as to meet more extreme marine conditions.
[0044] The working principle of the seabed pipeline anti-ship anchor and fishing net device in the present utility model is as follows:
[0045] When the ship anchor falls vertically and impacts the pipeline, the top planes of the conventional section protective cover 1 and the pipe head section protective cover 2 can resist and absorb the impact energy, and the inclined planes on both sides can change the impact movement direction of the ship anchor, so that the protective cover is subjected to less impact force; when the ship anchor drags horizontally and impacts the pipeline, the vertical surfaces on both sides of the protective cover are the impact-bearing surfaces, and at the same time the inclined planes on both sides can make the ship anchor more easily dragged over the protective cover to prevent hooking; when the fishing net drags and impacts the pipeline, similar to the dragging of the anchor, the vertical surfaces on both sides of the protective cover are the impact-bearing surfaces, and at the same time the inclined plane angles on both sides make the fishing net more easily slide over, and there are no protrusions on the outer surface of the protective cover, so fishing net hooking will not occur. After the opening hinge fixing structure of the pipe head section protective cover 2 is opened, the detachable baffle 9 of the pipe head section, the pipe head, and the parts that need to be replaced can be replaced. After the replacement is completed, the hinge fixing structure is closed, so that the conventional section protective cover 1 and the pipe head section protective cover 2 bear the impact of the ship anchor and the fishing net.
[0046] Based on the seabed pipeline anti-ship anchor and fishing net device, the present utility model isolates the direct impact of the ship anchor and the fishing net on the pipeline through the conventional section protective cover 1 and the pipe head section protective cover 2. At the same time, its outer surface has good passability for both the ship anchor and the fishing net. The buried protection plate 8 of the conventional section protective cover 1 is designed with a smooth arc plus rounded corners, so the ship anchor and the fishing net cannot cause hooking and other conditions. The glass fiber composite material used can absorb the impact energy of the ship anchor and the fishing net to the greatest extent, and can prevent or reduce the impact on the pipeline repeatedly for many times, fundamentally ensuring the safe and stable operation of the pipeline.
[0047] Obviously, the above-mentioned embodiments of the present utility model are only examples for clearly explaining the present utility model, and are not limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.
Claims
1. A submarine pipeline anti-anchor and fishing net device, characterized in that: It includes a conventional section protection cover and a pipe head section protection cover. The pipe head section protection cover is connected with the conventional section protection cover through a transition section protection cover. The conventional section protection cover is arranged above the submarine pipeline, and the pipe head section protection cover is arranged at the connection between submarine pipelines. Both the pipe head section protection cover and the conventional section protection cover are provided with hoisting holes so that the conventional section protection cover and the pipe head section protection cover can be hoisted. A detachable baffle of the pipe head section is slidably arranged on the pipe head section protection cover.
2. The submarine pipeline anti-anchor and fishing net device according to claim 1, characterized in that: A plurality of conventional section protection covers are arranged on the submarine pipeline, and the plurality of conventional section protection covers are connected in sequence.
3. The device for preventing submarine pipelines from ship anchors and fishing nets according to claim 2, characterized in that: A steering structure is provided at one end of the conventional section protection cover, and the steering structures of adjacent conventional section protection covers are connected to adapt to the curvature of the submarine pipeline body.
4. The device for preventing submarine pipelines from ship anchors and fishing nets according to claim 3 is characterized in that: The steering structure comprises a first semicircular buckle and a second semicircular buckle, which are rotatably connected to change the setting direction of the conventional section protective cover along with the curvature of the submarine pipeline body.
5. The device for preventing submarine pipelines from ship anchors and fishing nets according to claim 4, characterized in that: The conventional section protection cover is composed of a top cover plate and an underground protection plate. The underground protection plate is arranged on both sides of the top cover plate. The top cover plate is provided with a first lifting hole.
6. The device for preventing submarine pipelines from ship anchors and fishing nets according to claim 5, characterized in that: The buried protection plate is buried in the seabed to stabilize the pipeline.
7. The device for preventing submarine pipelines from ship anchors and fishing nets according to claim 1, characterized in that: A clamping groove is arranged on the pipe head section protection cover, a detachable baffle plate of the pipe head section is arranged in the clamping groove, and the detachable baffle plate of the pipe head section slides along the clamping groove.
8. The device for preventing submarine pipelines from ship anchors and fishing nets according to claim 7, characterized in that: A second hoisting hole is provided on the pipe head section protection cover to hang the pipe head section protection cover.
9. The device for preventing submarine pipelines from ship anchors and fishing nets according to claim 8, characterized in that: Multiple holes are provided on both sides of the pipe head section protective cover and the conventional section protective cover to facilitate water permeability during launching.
10. The device for preventing submarine pipelines from ship anchors and fishing nets according to claim 9, characterized in that: Cement blocks are provided on both sides of the pipe head section protection cover and the conventional section protection cover to ensure that the pipe head section protection cover and the conventional section protection cover are stably arranged.