CN215292443U

CN215292443U - Deep water riser limiting anchor chain device suitable for underwater ROV connection

Info

Publication number: CN215292443U
Application number: CN202120361973.3U
Authority: CN
Inventors: 杨伟; 杨琥; 赵党; 苑健康; 熊刚; 潘悦然; 胡春红; 冯现洪; 刘新帅; 刘刚
Original assignee: China National Offshore Oil Corp CNOOC; Offshore Oil Engineering Co Ltd
Current assignee: China National Offshore Oil Corp CNOOC; Offshore Oil Engineering Co Ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-12-24
Anticipated expiration: 2031-02-09

Abstract

The utility model discloses a deep water riser spacing anchor chain device suitable for ROV connects under water, including first breaking out, the one end of first breaking out is provided with first special end links, the other end of first special end links is provided with first connecting ring, the other end of first connecting ring is provided with standard chain ring, the other end of standard chain ring is provided with the second go-between, the other end of second go-between is provided with the special end links of second, the other end of the special end links of second is provided with the beaded finish, the other end of beaded finish is provided with ROV rings, the other end of ROV rings is provided with the second and breaks out, the other end that the second was broken out is provided with the special end links of third, the other end of the special end links of third is provided with the third go-between, the third go-between other end is provided with standard chain ring. The deepwater riser limiting anchor chain device suitable for underwater ROV connection is provided with the ROV hanging ring, and the hanging ring is provided with the pin bolt capable of being opened and closed underwater through the ROV, so that the purpose of realizing quick connection with a main reinforcing ring and preventing unhooking is achieved.

Description

Deep water riser limiting anchor chain device suitable for underwater ROV connection

Technical Field

The utility model relates to a spacing anchor chain device technical field of deep water riser suitable for ROV connects under water specifically is a spacing anchor chain device of deep water riser suitable for ROV connects under water.

Background

With the continued development of deep sea oil and gas development, Steel Catenary Risers (SCRs) have become a form of deep water riser in widespread use. It has been applied to a variety of marine platforms such as TLP platforms, semi-submersible platforms, FPSOs and the like. Under the action of the environments such as ship motion, ocean wave current and the like, a large axial load exists on the horizontal section of the SCR seabed, if the pipe soil action of a riser horizontal section is weak or the length of the horizontal section is insufficient due to the arrangement of underwater facilities, the axial tension of the bottom of the riser under extreme sea conditions can drive a submarine pipeline and end facilities to move in a one-way mode towards the motion direction of a floating platform, so that the integrity and even damage of a connector and a jumper pipe are influenced, and leakage and other problems are caused, so that the axial displacement of the pipeline of the SCR seabed section needs to be limited.

The prior art has the following defects or problems:

1. the prior art cannot realize underwater quick connection in the installation process, so that the installation cost is high;

2. the prior art has higher requirement to underwater structure installation accuracy, and the suitability is not wide, and stop device is comparatively fragile simultaneously, has increased the risk of revealing after the spacing inefficacy of underwater pipeline.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, provide a spacing anchor chain device of deep water riser suitable for ROV connects under water to solve the problem that provides in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the deep water riser limiting anchor chain device suitable for underwater ROV connection comprises a first shackle, wherein one end of the first shackle is provided with a first special end ring, the other end of the first special end ring is provided with a first connecting ring, the other end of the first connecting ring is provided with a standard chain ring, the other end of the standard chain ring is provided with a second connecting ring, the other end of the second connecting ring is provided with a second special end ring, the other end of the second special end ring is provided with a reinforcing ring, the other end of the reinforcing ring is provided with an ROV hanging ring, the other end of the ROV hanging ring is provided with a second shackle, the other end of the second shackle is provided with a third special end ring, and the other end of the third special end ring is provided with a third connecting ring.

As the utility model discloses a preferred technical scheme, be provided with the bolt on the first shackle, first shackle passes through bolt and pipeline fixed connection.

As the utility model discloses an optimal technical scheme, the anchor chain device divide into A, two segmentations of B, and the ROV rings swing joint of beaded finish and B section is passed through to A section.

As the utility model discloses a preferred technical scheme, the standard chain link of A section is provided with 5, and the standard chain link of B section is provided with 258, the standard chain link is through cup jointing interconnect.

As the utility model discloses an it is preferred technical scheme, have on the ROV rings and to realize the round pin bolt that opens and shuts under water through the ROV, the second is broken out and is provided with the bolt between the ROV rings, the second is broken out and is passed through bolt and ROV rings swing joint.

As the preferred technical scheme of the utility model, the standard chain ring adopts the preparation of the high-strength steel of R4 level, the beaded finish adopts alloy steel preparation, the beaded finish is through cup jointing with second special end ring swing joint.

As the utility model discloses a preferred technical scheme, first special end links through cup jointing with first go-between swing joint, third special end links through cup jointing with third go-between swing joint, the third go-between cup joints with standard chain, the third go-between other end is provided with standard chain link.

Compared with the prior art, the utility model provides a spacing anchor chain device of deep water riser suitable for ROV connects under water possesses following beneficial effect:

1. according to the deepwater riser limiting anchor chain device suitable for underwater ROV connection, the rapid connection with a main reinforcing ring is realized and unhooking is prevented through a pin bolt which is arranged on an ROV hanging ring and can be opened and closed underwater through the ROV;

2. according to the deepwater riser limiting anchor chain device suitable for underwater ROV connection, the two sections A and B are arranged, so that different sections are respectively installed, the requirement on the precision of underwater installation facilities is lowered, and the installation efficiency is improved;

3. the deepwater riser limiting anchor chain device suitable for underwater ROV connection is placed at a position where an anchor chain is easy to break through the reinforcing rings with excellent strength, toughness and corrosion resistance, and therefore the comprehensive performance and the service life of the anchor chain are improved.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic view of the shackle structure of the present invention;

FIG. 3 is a schematic structural view of the section A of the present invention;

FIG. 4 is a schematic view of the connecting portion between the section A and the end B of the present invention;

fig. 5 is the schematic view of the structure of the ROV hanging ring of the present invention.

In the figure: 1. a first shackle; 2. a first special end ring; 3. a first connecting ring; 4. a standard chain link; 5. a second connection ring; 6. a second special end ring; 7. a reinforcement ring; 8. an ROV hoisting ring; 9. a second shackle; 10. a third special end ring; 11. a third connecting ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: the deep water riser limiting anchor chain device suitable for underwater ROV connection comprises a first shackle 1, wherein one end of the first shackle 1 is provided with a first special end ring 2, the other end of the first special end ring 2 is provided with a first connecting ring 3, the other end of the first connecting ring 3 is provided with a standard chain ring 4, the other end of the standard chain ring 4 is provided with a second connecting ring 5, the other end of the second connecting ring 5 is provided with a second special end ring 6, the other end of the second special end ring 6 is provided with a reinforcing ring 7, the other end of the reinforcing ring 7 is provided with an ROV hanging ring 8, the other end of the ROV hanging ring 8 is provided with a second shackle 9, the other end of the second shackle 9 is provided with a third special end ring 10, and the other end of the third special end ring 10 is provided with a third connecting ring 11.

In the embodiment, the first shackle 1 is provided with the bolt, and the first shackle 1 is fixedly connected with the pipeline through the bolt, so that the quick replacement and the maintenance are facilitated; the anchor chain device is divided into two sections A and B, the section A is movably connected with the ROV hanging ring 8 of the section B through the reinforcing ring 7, so that anchor chains with different performances can be used according to different use environments, material cost is saved, respective installation among different sections is realized, the requirement on the precision of underwater installation facilities is reduced, and the installation efficiency is improved; 5 standard chain links 4 of the section A are arranged, 258 standard chain links 4 of the section B are arranged, and the standard chain links 4 are connected with each other through sleeving, so that the connection stability is facilitated; the ROV lifting ring 8 is provided with a pin bolt capable of realizing underwater opening and closing through an ROV, a bolt is arranged between the second shackle 9 and the ROV lifting ring 8, and the second shackle 9 is movably connected with the ROV lifting ring 8 through the bolt, so that the quick connection with the main reinforcing ring 7 is realized, and unhooking is prevented; the standard chain ring 4 is made of R4-grade high-strength steel, the reinforcing ring 7 is made of alloy steel, and the reinforcing ring 7 is movably connected with the second special end ring 6 through sleeving, so that the performance of different parts of the structure is increased; the first special end ring 2 is movably connected with the first connecting ring 3 through sleeving, the third special end ring 10 is movably connected with the third connecting ring 11 through sleeving, the third connecting ring 11 is sleeved with a standard chain, and the other end of the third connecting ring 11 is provided with the standard chain ring 4, so that the use length of the anchor chain is increased, and the working range is expanded.

The utility model discloses a theory of operation and use flow: when the anchor chain device is used, a user connects one end of the anchor chain with a pipeline through the first shackle 1, then a bolt pin capable of being operated underwater is arranged on the ROV hanging ring 8, the ROV hanging ring 8 is connected with the reinforcing ring 7 through underwater opening and closing of the ROV, the AB chain segment is connected into a whole anchor chain device, the other end of the anchor chain is connected with the fixed end of the suction anchor through the chain stopping claw, and displacement and tension limitation of the horizontal section at the bottom of the steel catenary riser under the action of ship motion and ocean wave current can be realized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a spacing anchor chain device of deep water riser suitable for ROV connects under water which characterized in that: comprises a first shackle (1), one end of the first shackle (1) is provided with a first special end ring (2), the other end of the first special end ring (2) is provided with a first connecting ring (3), the other end of the first connecting ring (3) is provided with a standard chain ring (4), the other end of the standard chain ring (4) is provided with a second connecting ring (5), the other end of the second connecting ring (5) is provided with a second special end ring (6), the other end of the second special end ring (6) is provided with a reinforcing ring (7), the other end of the reinforcing ring (7) is provided with an ROV hanging ring (8), the other end of the ROV hanging ring (8) is provided with a second shackle (9), the other end of the second shackle (9) is provided with a third special end ring (10), the other end of the third special end ring (10) is provided with a third connecting ring (11).

2. The deepwater riser limit anchor chain device suitable for underwater ROV connection as claimed in claim 1, wherein: the first shackle (1) is provided with a bolt, and the first shackle (1) is fixedly connected with a pipeline through the bolt.

3. The deepwater riser limit anchor chain device suitable for underwater ROV connection as claimed in claim 1, wherein: the anchor chain device is divided into two sections A and B, wherein the section A is movably connected with an ROV hanging ring (8) of the section B through a reinforcing ring (7).

4. The deepwater riser limit anchor chain device suitable for underwater ROV connection as claimed in claim 3, wherein: the standard chain ring (4) of the section A is provided with 5, the standard chain ring (4) of the section B is provided with 258, and the standard chain rings (4) are connected with each other through sleeving.

5. The deepwater riser limit anchor chain device suitable for underwater ROV connection as claimed in claim 1, wherein: have on ROV rings (8) and can realize the round pin bolt that opens and shuts under water through ROV, be provided with the bolt between second break out (9) and ROV rings (8), second break out (9) pass through bolt and ROV rings (8) swing joint.

6. The deepwater riser limit anchor chain device suitable for underwater ROV connection as claimed in claim 1, wherein: the standard chain ring (4) is made of R4-grade high-strength steel, the reinforcing ring (7) is made of alloy steel, and the reinforcing ring (7) is movably connected with the second special end ring (6) through sleeving.

7. The deepwater riser limit anchor chain device suitable for underwater ROV connection as claimed in claim 1, wherein: the first special end ring (2) is movably connected with the first connecting ring (3) through sleeving, the third special end ring (10) is movably connected with the third connecting ring (11) through sleeving, the third connecting ring (11) is sleeved with a standard chain, and the other end of the third connecting ring (11) is provided with a standard chain ring (4).