CN219045597U

CN219045597U - Submarine pipeline installation positioning device for deep sea section

Info

Publication number: CN219045597U
Application number: CN202223540849.7U
Authority: CN
Inventors: 程龙; 吴凯; 彭刚; 陈聪
Original assignee: East Guangdong Branch Of Cccc Fourth Harbor Engineering Bureau Co ltd; CCCC Fourth Harbor Engineering Co Ltd
Current assignee: China Communications Fourth Navigation Bureau Eighth Engineering Co ltd; CCCC Fourth Harbor Engineering Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-19
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to a submarine pipeline installation positioning device for a deep sea section, which comprises a plurality of positioning piles and a plurality of positioning anchors, wherein the positioning piles are arranged at intervals along the length direction of a pipeline installation foundation groove, all the positioning piles are positioned on the same side of the foundation groove, the positioning anchors are arranged at intervals along the length direction of the foundation groove, all the positioning anchors are positioned on the same side as the positioning piles, the positioning piles are used for being abutted against a pipeline, and the positioning anchors are connected with the pipeline through cables. According to the deep sea submarine pipeline installation positioning device, the positioning piles are arranged to limit the pipeline in the pipeline towing process, the pipeline is abutted and limited in the pipeline sinking process, the pipeline is limited in two directions in the direction perpendicular to the axis of the pipeline under the combined action of the positioning anchors and the positioning piles, and the pipeline is prevented from being broken due to large deformation in the pipeline construction process.

Description

Submarine pipeline installation positioning device for deep sea section

Technical Field

The utility model relates to the technical field of submarine pipeline installation, in particular to a submarine pipeline installation positioning device for a deep sea section.

Background

Some industrial park projects facing the sea are provided with auxiliary facility projects such as ocean drainage pipes, the ocean drainage pipes are introduced into the sea area from land areas, the deep sea sections are caused by shoal sections of the sea area, the ocean drainage pipes in the sea area are mostly steel pipes buried on the sea bottom, the steel pipes buried on the sea bottom are generally processed by ships, foundation grooves are excavated, cushion layers in the foundation grooves are polished and filled, steel pipe pipelines are erected in the foundation grooves, and the foundation grooves are backfilled in layers.

The deep sea section has larger wind wave, the construction risk of the conventional pipe-laying ship method is larger, the construction is difficult, and the pipeline is easy to break.

Disclosure of Invention

The utility model aims at: aiming at the problems of large wind wave in the deep sea section and easy breakage of the pipeline in the construction process in the prior art, the installation and positioning device for the submarine pipeline in the deep sea section is provided.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a submarine pipeline installation positioner of deep sea section, includes a plurality of spud and a plurality of locating anchor, and the spud sets up along pipeline installation foundation ditch length direction interval, and all spud are located the same one side of foundation ditch, and the locating anchor is thrown along foundation ditch length direction interval and is established, and all locating anchors are located the same one side with the spud, and the spud is used for leaning on the pipeline, and the locating anchor passes through the hawser connecting tube.

By arranging the positioning piles, the pipeline is limited in the pipeline towing process, the pipeline is limited in the pipeline butt joint process and the pipeline sinking process, the pipeline is limited in two directions in the direction perpendicular to the axis of the pipeline under the combined action of the positioning anchors and the positioning piles, and the pipeline is prevented from being broken due to large deformation in the pipeline construction process.

Preferably, the spud is positioned downwind of the foundation trench.

Preferably, the pile body of the positioning pile is offset from the axis of the foundation trench by 1m-2m.

Preferably, the spacing between adjacent spuds is 80m-100m.

Preferably, the positioning pile is a steel pipe pile.

Preferably, the anchor polishing set point is 40m-60m from the axis of the foundation trench.

Preferably, the spacing between adjacent anchors is 80m-100m.

Preferably, the weight of the anchor is 3t-4t.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

according to the deep sea submarine pipeline installation positioning device, the positioning piles are arranged to limit the pipeline in the pipeline towing process, the pipeline is abutted and limited in the pipeline sinking process, the pipeline is limited in two directions in the direction perpendicular to the axis of the pipeline under the combined action of the positioning anchors and the positioning piles, and the pipeline is prevented from being broken due to large deformation in the pipeline construction process.

Drawings

FIG. 1 is a schematic plan view of a spud and anchor arrangement;

FIG. 2 is an elevational schematic view of a spud installation;

FIG. 3 is a schematic plan view of a spud installation;

FIG. 4 is a schematic view of the construction of the anchor;

fig. 5 is an anchoring schematic of the localizing anchor.

The marks in the figure: 1-pipeline, 2-spud, 3-barge, 4-locating rack and 5-locating anchor.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

As shown in fig. 1 to 5, the positioning device for installing the submarine pipeline in the deep sea section comprises a plurality of positioning piles 2 and a plurality of positioning anchors 5.

The positioning piles 2 are arranged at intervals along the length direction of the installation foundation groove of the pipeline 1 by adopting DN600 steel pipe piles, as shown in fig. 1, in order to ensure that the anchor boat can smoothly pass in the towing process of the pipeline 1, the embodiment considers that the positioning piles 2 are only applied to one side of the foundation groove of the pipeline 1, all the positioning piles 2 are positioned on one side of the foundation groove in the downwind direction, the pile bodies of the positioning piles 2 deviate from the axis of the foundation groove by 1m-2m, the distance between every two adjacent positioning piles 2 is 80m-100m, and the positioning piles 2 are used for being abutted against the pipeline 1.

In the embodiment, the positioning pile 2 is recycled, and the positioning pile 2 is pulled out after the pipeline 1 is installed, and the next section of pipeline 1 is driven at the installation position.

The length of the steel pipe pile is controlled by cutting or lengthening, the steel pipe pile (14) of two sections of pipelines 1 are only driven each time in consideration of the steel pipe pile with the entrance of 15 x 37=555 m, after the pipelines 1 are installed, the steel pipe pile is pulled out, and then the position of the next section of pipeline 1 is driven, so that the maximum demand of the steel pipe pile at the same time is 14 x 37 m=518 m, and 555m is more than 518m, and the demand is met.

As shown in fig. 2 and 3, a third barge 3 with 7000t is matched with a 200t crawler hanging vibrating hammer to carry out pile sinking construction; firstly, welding a pile sinking locating frame 4 by using channel steel, welding the pile sinking locating frame to the bow of a third barge 3, then calculating coordinates of a steel pipe pile, guiding the third barge 3 to perform primary locating by using a GPS, accurately measuring the locating frame 4, winding and unwinding an anchor cable in a small range by using the third barge 3 for accurate locating, and finally, passing the steel pipe pile through the locating frame 4 to finish the locating of the steel pipe pile and start pile sinking. In the pile sinking process, the GPS continuously retests the pile position and performs checking adjustment. The locating frame 4 is formed by welding [16a ], the size of an inner control penetrating pipe is 1m multiplied by 1m, the locating frame can adapt to the outer diameter of the steel pipe pile by 0.6m, the locating frame is divided into an upper layer and a lower layer, the distance is 1.5m, and the perpendicularity of the steel pipe pile can be ensured.

The concrete construction method is as follows: 200t crawler crane auxiliary hook is connected with steel-pipe pile one end, at first erects the steel-pipe pile on third barge 3 with auxiliary hook, later auxiliary hook lifts by crane and vertically inserts the seabed with the steel-pipe pile, and main hook vibrations hammer presss from both sides tight pile top this moment, and vibrations hammer lifts by crane the steel-pipe pile and puts into locating rack 4, begins the pile after the adjustment steel-pipe pile position, and vibrations hammer adopts DZ90 model.

The weight of each linear meter of DN600 steel pipe pile is 152.8kg, the longest 37m weight of the steel pipe pile is 5.6t, the weight of the DZ90 vibration hammer is 5.8t, so the maximum lifting weight of the crawler crane is 11.4t, and the auxiliary hook of 13.5t is considered to be equipped for assisting in lifting the steel pipe pile. According to the 200t crawler crane parameter table, the maximum span can reach 44m when the lifting weight is 12t, and the construction requirement of the embodiment is met.

As shown in fig. 1, considering that the unilateral positioning pile 2 can only limit the pipeline 1 in one direction, the wind force and water flow force direction can be changed for a plurality of times in one period of offshore installation of the pipeline 1, and the unilateral positioning pile 2 can not meet the limit requirement, a row of positioning anchors 5 are required to be thrown on the same side of the positioning pile 2.

The positioning anchors 5 are arranged at intervals along the length direction of the foundation groove, all the positioning anchors 5 are positioned on the same side as the positioning piles 2, the throwing points of the positioning anchors 5 are 40m-60m away from the axis of the foundation groove, the distance between every two adjacent positioning anchors 5 is 80m-100m, as shown in fig. 4, the weight of each positioning anchor 5 is 3t-4t, and each positioning anchor 5 is connected with the pipeline 1 through a cable.

In a specific embodiment, as shown in fig. 5, the length of the wire rope connecting the anchor 5 and the pipeline 1 is set to be 52m considering 2m surplus, wherein the distance between the anchor 5 and the central axis of the pipeline 1 is 50 m; taking the most unfavorable section (the section with the largest excavation thickness of the foundation trench) as an example, the required cable length is 50.8m when the pipeline 1 floats on the water surface, and is 51.5m when the pipeline 1 sinks into the bottom of the foundation trench, so the steel wire rope length is set to 52m to meet the requirement.

According to the deep sea submarine pipeline installation positioning device, the positioning piles 2 are arranged to limit the pipeline 1 in the towing process of the pipeline 1, the pipeline 1 is abutted to limit the pipeline 1 in the sinking process of the pipeline 1, the pipeline 1 is limited in two directions in the direction perpendicular to the axis of the pipeline 1 under the combined action of the positioning anchors 5 and the positioning piles 2, the pipeline 1 is prevented from being deformed greatly in the construction process of the pipeline 1, and the installation positioning device is simple in structure, convenient to use and good in effect.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a submarine pipeline installation positioner of deep sea section, a serial communication port, including a plurality of spud (2) and a plurality of locating anchor (5), spud (2) are along pipeline (1) installation foundation ditch length direction interval setting, all spud (2) are located the same side of foundation ditch, and locating anchor (5) are thrown along foundation ditch length direction interval and are established, and all spud (5) are located the same one side with spud (2), and spud (2) are used for leaning on pipeline (1), and spud (2) are through hawser connecting tube (1).

2. The deep sea section submarine pipeline installation positioning device according to claim 1, wherein the positioning pile (2) is located on the downwind side of the foundation trench.

3. The deep sea section submarine pipeline installation positioning device according to claim 1, wherein the pile body of the positioning pile (2) is offset by 1m-2m from the base groove axis.

4. The deep sea section submarine pipeline installation positioning device according to claim 1, wherein the distance between adjacent positioning piles (2) is 80-100 m.

5. The deep sea section submarine pipeline installation positioning device according to claim 1, wherein the positioning pile (2) is a steel pipe pile.

6. The deep sea section submarine pipeline installation positioning device according to claim 1, wherein the throwing point of the positioning anchor (5) is 40m-60m from the base groove axis.

7. Deep sea section submarine pipeline installation positioning device according to claim 1, characterized in that the spacing between adjacent positioning anchors (5) is 80-100 m.

8. Deep sea section submarine pipeline installation location device according to any of claims 1-7, characterized in that the weight of the location anchor (5) is 3-4 t.