CN210318813U - Anti-scouring protection device - Google Patents
Anti-scouring protection device Download PDFInfo
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- CN210318813U CN210318813U CN201921217094.2U CN201921217094U CN210318813U CN 210318813 U CN210318813 U CN 210318813U CN 201921217094 U CN201921217094 U CN 201921217094U CN 210318813 U CN210318813 U CN 210318813U
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- submarine pipeline
- flow guide
- scour protection
- vertical
- pipeline
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Abstract
The utility model provides a scour prevention protection device. An anti-scour protection device comprises a flow guide piece and a fixing piece, wherein the fixing piece is located above the flow guide piece, and is fixedly connected below a submarine pipeline. The utility model discloses a guide plate and mounting prevent the washing away of submarine pipeline department of laying to guarantee submarine pipeline stability on the throne.
Description
Technical Field
The utility model relates to a submarine pipeline's protection technical field, more specifically relates to an anti-scour protection device.
Background
The subsea pipeline is often in a very harsh subsea environment, and is directly affected by waves, currents and the like, and many uncertain factors exist, so that the risk of the subsea pipeline is greatly increased. There are three ways of laying subsea pipelines today: directly laying on the surface of the seabed, burying into the seabed and semi-burying into the seabed. Regardless of the laying mode, the original water flow field is changed due to the existence of the submarine pipeline, the pressure difference occurs at the upstream and downstream positions of the submarine pipeline, so that seepage occurs on the surface of the seabed, and when the pressure exceeds the underwater weight of silt, scouring begins to occur. With the further development of seepage, a large amount of silt is flushed downstream, so that a suspended section of the submarine pipeline is generated. Meanwhile, due to the action of water flow, vortex-induced vibration may occur in the suspended section, so that the submarine pipeline is damaged due to fatigue. There are several protection methods for subsea pipelines, and these protection methods have been proved to have many disadvantages. For example, underwater riprap has no siltation promotion effect, riprap is also likely to run off, and the reliability is poor; the control range of the underwater support single underwater pile is small, and the expansion of the scouring range cannot be prevented; the bionic aquatic weed has strong specificity, high underwater fixing difficulty and poor adaptability when the submarine pipeline is suspended too high; and the stress control of secondary trenching is difficult and the risk is high. Therefore, the development of efficient, practical and cheap anti-scouring protection devices is receiving more and more attention, and has important engineering application value.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the problem that submarine pipeline was washed away, provide an anti-scouring device. The utility model discloses a guide plate and mounting prevent the washing away of submarine pipeline department of laying to guarantee submarine pipeline stability on the throne.
In order to solve the technical problem, the utility model discloses a technical scheme is: an anti-scour device comprises a flow guide piece and a fixing piece, wherein the fixing piece is located above the flow guide piece, and is fixedly connected below a submarine pipeline. The fixing piece is used for fixing the submarine pipeline and the flow guide piece, and the flow guide piece prevents seepage and scouring caused by pressure difference formed between two sides of water flow blocked by the submarine pipeline.
Further, the flow guide piece comprises a horizontal flow guide plate and a vertical flow baffle plate, and the horizontal flow guide plate is positioned at the top of the vertical flow baffle plate. The horizontal guide plates comprise two side wing guide plates which are symmetrically arranged at two sides of the top of the vertical spoiler. The vertical spoiler and the two side wing deflectors are of an integrated structure. Because the pressure difference is formed between the upstream position and the downstream position of the submarine pipeline under the action of water flow, the seepage force in the seabed is increased, and when the side wing guide plate reaches a certain length, the pressure difference between the upstream position and the downstream position of the submarine pipeline is smaller than the pressure difference generated when scouring occurs; the vertical flow blocking plate is arranged, so that the path length of seepage is prolonged, seepage is less prone to occur, the overall movement of the flow guide piece is limited, and the in-place stability of the submarine pipeline is guaranteed.
Further, the width of the wing baffles is at least 1.5 times the diameter of the subsea pipeline. The height of the vertical spoiler is at least 1.5 times the diameter of the subsea pipeline. The diameter of the subsea pipeline affects the pressure difference created at its upstream and downstream locations, and therefore the width of the wing baffles is at least 1.5 times the diameter of said subsea pipeline. The height of the vertical flow blocking plate is at least 1.5 times of the diameter of the submarine pipeline, the path length of seepage is prolonged, seepage is less prone to occur, the overall movement of the flow guide piece is limited, and the in-place stability of the submarine pipeline is guaranteed.
Further, the top of mounting is equipped with the arc recess, the arc recess with the outer wall of submarine pipeline is laminated mutually. The arc-shaped groove reduces the connecting gap between the submarine pipeline and the fixing piece, so that the connecting part between the submarine pipeline and the fixing piece can be corroded by seawater, and the service life is prolonged.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model can prevent the seepage and the scouring caused by the pressure difference formed between the two sides of the water flow blocked by the submarine pipeline by arranging the horizontal guide plate; the vertical flow blocking plate is arranged to limit the integral movement of the flow guide piece so as to ensure the in-place stability of the submarine pipeline; through setting up the mounting, reduce the clearance of being connected between submarine pipeline and the mounting, make the junction between submarine pipeline and the mounting can reduce to receive the erosion of sea water to increase of service life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In fig. 1, 1-flow guide, 2-fixed part, 3-subsea pipeline, 11-horizontal flow guide, 111-lateral flow guide, 12-vertical flow guide, 21-arc groove, 4-subsea groove.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Fig. 1 shows a first embodiment of an anti-erosion protection device according to the present invention. An anti-scour protection device comprises a flow guide part 1 and a fixing part 2 which are buried on a seabed, wherein the flow guide part 1 is connected with a submarine pipeline 3 through the fixing part 2. The flow guiding element 1 comprises a horizontal flow guiding plate 11 and a vertical flow guiding plate 12, wherein the horizontal flow guiding plate 11 is arranged on the top of the vertical flow guiding plate 12. The bottom of the fixing piece 2 is a plane and is welded with the horizontal guide plate 11. In order to better connect the submarine pipe 3 with the fixed member 2, the top of the fixed member 2 is provided with an arc-shaped groove 21, and the arc-shaped groove 21 is connected with the submarine pipeline 3 by welding.
The horizontal guide plates 11 include two side wing guide plates 111, and are symmetrically arranged at two sides of the top of the vertical baffle plate 12, the vertical baffle plate 12 is connected with the two side wing guide plates 111 to form a T-shaped structure, and the vertical baffle plate and the two side wing guide plates are of an integrated structure. The material adopted by the guide plate of the embodiment is X65 type steel.
In addition, the width of the side baffles 111 is 2 times the diameter of the subsea pipeline 3 and the height of the vertical baffles 12 is 1.5 times the diameter of the subsea pipeline 3.
During the laying, the excavation of the submarine trench 4 is carried out mechanically, then the submarine pipeline 3 and the embodiment are integrally placed into the trench 4 and automatically sink on the seabed, and then the horizontal guide plate 11 and the surface of the seabed are kept on the same horizontal plane.
The working principle of the embodiment is as follows: the side wing guide plates 111 on the flow guide piece 1 enable the pressure difference of the upper and lower streams of the submarine pipeline 3 to be smaller than the pressure difference when scouring occurs, scouring caused by seepage is prevented, the flow blocking plates 12 are perpendicular to prolong the path length of seepage, seepage is enabled to be less prone to occur, the overall movement of the flow guide piece 1 is limited, and the in-place stability of the submarine pipeline 3 is guaranteed.
The utility model discloses a another embodiment is similar with the first embodiment, and the institute difference lies in, water conservancy diversion spare 1 adopts the concrete reinforcement material that has geotechnological cloth's prefabricated C35 intensity (cube compressive strength value more than or equal to 35Mpa) with mounting 2, bonds through epoxy, and submarine pipeline 3 adopts the concrete reinforcement material that has geotechnological cloth's prefabricated C35 (cube compressive strength value more than or equal to 35Mpa) intensity with arc recess 21 equally, bonds through epoxy.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. An anti-scour protection device which characterized in that: the device comprises a flow guide part and a fixing part, wherein the fixing part is positioned above the flow guide part and is fixedly connected below a submarine pipeline.
2. An anti-scour protection according to claim 1, further comprising: the flow guide piece comprises a horizontal flow guide plate and a vertical flow baffle plate, and the horizontal flow guide plate is positioned at the top of the vertical flow baffle plate.
3. An anti-scour protection according to claim 2, further comprising: the horizontal guide plates comprise two side wing guide plates which are symmetrically arranged at two sides of the top of the vertical spoiler.
4. An anti-scour protection according to claim 3, further comprising: the vertical spoiler and the two side wing deflectors are of an integrated structure.
5. An anti-scour protection according to claim 4, further comprising: the width of the wing baffles is at least 1.5 times the diameter of the subsea pipeline.
6. An anti-scour protection according to claim 2, further comprising: the height of the vertical spoiler is at least 1.5 times the diameter of the subsea pipeline.
7. An anti-scour protection according to claim 1, further comprising: the top of mounting is equipped with the arc recess, the arc recess with the outer wall of submarine pipeline is laminated mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921217094.2U CN210318813U (en) | 2019-07-30 | 2019-07-30 | Anti-scouring protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921217094.2U CN210318813U (en) | 2019-07-30 | 2019-07-30 | Anti-scouring protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318813U true CN210318813U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921217094.2U Active CN210318813U (en) | 2019-07-30 | 2019-07-30 | Anti-scouring protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318813U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216068A (en) * | 2020-09-02 | 2021-01-12 | 广东电网有限责任公司 | Submarine cable scouring monitoring early warning protection system and method |
| CN117267465A (en) * | 2023-09-15 | 2023-12-22 | 青岛海大海洋工程技术开发有限公司 | Submarine pipeline system with diversion protection structure and installation method |
-
2019
- 2019-07-30 CN CN201921217094.2U patent/CN210318813U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216068A (en) * | 2020-09-02 | 2021-01-12 | 广东电网有限责任公司 | Submarine cable scouring monitoring early warning protection system and method |
| CN112216068B (en) * | 2020-09-02 | 2022-03-29 | 广东电网有限责任公司 | Submarine cable scouring monitoring early warning protection system and method |
| CN117267465A (en) * | 2023-09-15 | 2023-12-22 | 青岛海大海洋工程技术开发有限公司 | Submarine pipeline system with diversion protection structure and installation method |
| CN117267465B (en) * | 2023-09-15 | 2024-04-05 | 青岛海大海洋工程技术开发有限公司 | Submarine pipeline system with diversion protection structure and installation method |
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