CN218288032U

CN218288032U - Floating type fan mooring cable laying system

Info

Publication number: CN218288032U
Application number: CN202222802097.0U
Authority: CN
Inventors: 张毅; 吴海金; 区振棠; 张建军; 黄晓靖
Original assignee: Guangzhou Salvage Bureau
Current assignee: Guangzhou Salvage Bureau
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-01-13
Anticipated expiration: 2032-10-24

Abstract

The utility model discloses a floating type fan mooring cable laying system, which belongs to the technical field of offshore construction and is used for laying a mooring cable of a fixed floating type fan, the floating type fan mooring cable laying system comprises an operation ship, a constant tension winch and a suction anchor, the operation ship is provided with a plurality of anchor cables, one part of the anchor cables is connected with the bow of the operation ship, and the other part of the anchor cables is connected with the stern of the operation ship; the constant tension winch is fixedly arranged in the middle of the working ship, and the mooring cable is wound on the constant tension winch and is released by constant tension of the constant tension winch; the suction anchor is used to secure one end of the mooring line. The utility model discloses enough reduce the mooring cable and appear crooked, beat and turn round or skew probability, improve the success rate of laying the mooring cable.

Description

Floating type fan mooring cable laying system

Technical Field

The utility model relates to a marine construction technical field especially relates to a float formula fan mooring cable laying system.

Background

With the development of wind power industry to deep water, the floating type fan starts to be applied. At present, the floating type fan is mainly fixed on the sea surface by means of a suction anchor and a mooring cable.

When all mooring cables are laid in a project, the error of an actual laying position relative to a designed path needs to be within +/-5.0 meters. After the mooring cable is connected with the basic platform and the positioning is completed, the allowable deviation of the installation of the center position of the platform is +/-3.0 meters. The upper portions of the three mooring cables connected with the fan side foundation platform upright post are about 12 meters long, and are length adjusting chains during installation. After the length of the mooring cable is adjusted to meet the requirement, the mooring cable with the redundant length is cut off and then is connected with the upper-section mooring cable (namely an adjusting chain) through the connecting shackle. The mooring lines have a total length of about 930 metres. In the prior art, the mooring cable is released through experience of an operator, and manual release has the problem that the release speed is too high or too low, so that the actual path of the mooring cable during laying has certain bending, twisting and deviation conditions, and the adjustable length is only 12 meters, so that the problem that the mooring cable cannot be connected with a floating platform easily occurs.

Therefore, a floating wind turbine mooring line laying system is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a float formula fan mooring cable system of laying can reduce the mooring cable and appear crooked, beat and turn round or skew probability, improve the success rate of laying the mooring cable.

As the conception, the utility model adopts the technical proposal that:

float formula fan mooring cable laying system for lay the mooring cable of fixed showy formula fan, include:

a work vessel having a plurality of anchor lines, one portion of the plurality of anchor lines being connected to a bow of the work vessel and the other portion being connected to a stern of the work vessel;

the constant tension winch is fixedly arranged in the middle of the working ship, and the mooring rope is wound on the constant tension winch and is released by constant tension of the constant tension winch;

and the suction anchor is used for fixing one end of the mooring cable.

Optionally, the length direction of the work vessel is perpendicular to the length direction of the mooring line.

Optionally, the constant tension winch comprises a drum on which the mooring line is wound.

Optionally, eight anchor cables are provided, and four anchor cables are provided on the bow and the stern of the work ship respectively.

Optionally, the four anchor cables located on the bow of the work vessel are respectively a first anchor cable, a second anchor cable, a third anchor cable and a fourth anchor cable, and the first anchor cable, the second anchor cable, the third anchor cable and the fourth anchor cable are sequentially arranged along the width direction of the work vessel.

Optionally, an included angle between the first anchor cable and the second anchor cable is greater than an included angle between the third anchor cable and the fourth anchor cable, an included angle between the second anchor cable and the third anchor cable is greater than an included angle between the third anchor cable and the fourth anchor cable, and a connection position of the fourth anchor cable on the work vessel is closer to a target installation position than the connection position of the first anchor cable on the work vessel.

Optionally, the four anchor cables at the stern of the workboat are axisymmetrically arranged with the four anchor cables at the bow of the workboat.

Optionally, the working vessel is further provided with a plurality of automatic anchor cable retractors, the plurality of automatic anchor cable retractors correspond to the plurality of anchor cables one to one, and the anchor cables are wound on the corresponding automatic anchor cable retractors.

Optionally, the suction anchor is provided with a plurality of suction anchors, the plurality of suction anchors are divided into three suction anchor groups, the three suction anchor groups are arranged around the target installation position at equal intervals, and the distances between the three suction anchor groups and the target installation position are equal.

The utility model provides a float effective fruit of formula fan mooring cable laying system: the moving direction and the moving speed of the operation ship are controlled by adjusting the lengths of the anchor cables, the mooring cables are released by constant tension of the constant tension winch on the operation ship, the mooring cables can be laid on a designed path, the constant tension laying can avoid the mismatching of the moving speed of the operation ship and the releasing speed of the mooring cables, the probability of bending, twisting or deviation of the mooring cables can be reduced, the success rate of laying the mooring cables is improved, and the condition that the mooring cables cannot be connected with a floating type platform at a target installation position cannot be caused.

Drawings

Fig. 1 is a schematic view of a work vessel and a constant tension winch according to an embodiment of the present invention;

fig. 2 is an enlarged schematic view of fig. 1 at a according to the present invention;

fig. 3 is a first usage state reference diagram of a floating wind turbine mooring cable laying system provided by an embodiment of the present invention;

fig. 4 is a reference diagram of a use state of the floating wind turbine mooring cable laying system according to the embodiment of the present invention.

In the figure:

1. an operation boat; 2. an anchor cable; 21. a first anchor line; 22. a second anchor line; 23. a third anchor line; 24. a fourth anchor line; 3. a constant tension winch; 4. a suction anchor; 5. an automatic anchor cable retracting device; 10. a mooring line; 20. designing a path; 30. a target mounting location.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a floating fan mooring cable laying system for laying a mooring cable for fixing a floating fan, which can reduce the probability of bending, twisting or deviation of the mooring cable and improve the success rate of laying the mooring cable.

As shown in fig. 1 and 2, the floating wind turbine mooring line laying system includes a work vessel 1, a constant tension winch 3, and a suction anchor 4.

The operation ship 1 is a ship commonly used on the sea, the operation ship 1 is provided with a plurality of anchor cables 2, one part of the anchor cables 2 is connected to the bow of the operation ship 1, the other part of the anchor cables 2 is connected to the stern of the operation ship 1, and the moving direction and the moving speed of the operation ship 1 can be controlled through the anchor cables 2. In this embodiment, the moving direction and the moving speed of the working ship 1 can be controlled by retracting and releasing different anchor lines 2. In this embodiment, the number of the anchor cables 2 connected to the bow of the work vessel 1 is the same as the number of the anchor cables 2 connected to the stern of the work vessel 1, so as to ensure the balance of the stress of the work vessel 1 and improve the moving stability.

The constant tension winch 3 is fixedly installed in the middle of the workboat 1, and specifically, the constant tension winch 3 is fixedly connected to the center of the workboat 1, so as to maintain the balance of the workboat 1. The mooring line 10 is wound around the constant tension winch 3 and released by the constant tension winch 3 under constant tension, so that the situation that the moving speed of the working ship 1 is not matched with the releasing speed of the mooring line 10 can be avoided. The suction anchor 4 is used to secure one end of the mooring line 10, and the work vessel 1 lays the mooring line 10 between the suction anchor 4 and the target installation site 30. In this embodiment, a mooring chain is connected to the suction anchor 4 for connection to a mooring line 10.

The floating type fan mooring cable laying system provided by the embodiment, the moving direction and the moving speed of the operation ship 1 are controlled by adjusting the length of the anchor cables 2, the constant tension winch 3 on the operation ship 1 releases the mooring cable under constant tension, the mooring cable 10 can be laid on the designed path 20, the constant tension laying can avoid the mismatch between the moving speed of the operation ship 1 and the releasing speed of the mooring cable 10, the bending, twisting or deviation probability of the mooring cable 10 can be reduced, the success rate of laying the mooring cable 10 is improved, and the condition that the mooring cable 10 cannot be connected with a floating type platform at the target installation position 30 cannot be caused.

Optionally, in this embodiment, as shown in fig. 3, during the laying process, the length direction of the work vessel 1 is always perpendicular to the length direction of the mooring line 10, that is, the work vessel 1 is controlled to move transversely along the movement path of the mooring line 10, so that the constant tension winch 3 releases the mooring line 10, and the disturbance and twisting of objects on the work vessel 1 by 10 times of the mooring line can be prevented.

The constant tension winch 3 in this embodiment comprises a drum on which the mooring line 10 is wound. It is understood that the constant tension winch 3 may have other structures, that is, the constant tension winch 3 is a structure in the prior art, and only the constant tension releasing mooring cable 10 needs to be ensured, which is not described in detail in this embodiment.

In this embodiment, as shown in fig. 3 and 4, eight anchor lines 2 are provided, and four anchor lines are provided on the bow and the stern of the work vessel 1, respectively.

Further, the four anchor lines 2 located at the bow of the work vessel 1 are a first anchor line 21, a second anchor line 22, a third anchor line 23, and a fourth anchor line 24, respectively. Wherein, first anchor line 21, second anchor line 22, third anchor line 23 and fourth anchor line 24 set gradually along the width direction of operation ship 1 to prevent four anchor lines 2 mutual interference, be convenient for four anchor lines 2 break down simultaneously.

Still further, as shown in fig. 3 or 4, the included angle between the first anchor line 21 and the second anchor line 22 is larger than the included angle between the third anchor line 23 and the fourth anchor line 24, the included angle between the second anchor line 22 and the third anchor line 23 is larger than the included angle between the third anchor line 23 and the fourth anchor line 24, the connection position of the fourth anchor line 24 on the working vessel 1 is closer to the target installation position 30 than the connection position of the first anchor line 21 on the working vessel 1, the third anchor line 23 and the fourth anchor line 24 are mainly used for providing forward power to the working vessel 1, in this embodiment, the fourth anchor line 24 is substantially parallel to the design path 20 of the mooring line 10, so that the moving path of the working vessel 1 substantially coincides with the design path 20 of the mooring line 10, the included angle between the third anchor line 23 and the fourth anchor line 24 is smaller, generally smaller than 45 degrees, and the third anchor line 23 is used as an auxiliary or alternative to the fourth anchor line 24, so that when the fourth anchor line 24 breaks, the forward power can be provided to the working vessel 1 through the third anchor line 23.

The first anchor line 21 and the second anchor line 22 are mainly used for controlling the travelling direction, the travelling speed and the travelling stability of the work vessel 1. When the operation ship 1 moves downwind and the moving speed is too high, resistance can be provided for the operation ship 1 through the first anchor cable 21 so as to ensure the constant-speed movement of the operation ship 1 as much as possible and further cooperate with the action of the constant-tension winch 3. In this embodiment, the included angle between the first anchor line 21 and the second anchor line 22 is greater than 45 degrees, the included angle between the second anchor line 22 and the third anchor line 23 is greater than 45 degrees, and the included angle between the first anchor line 21 and the fourth anchor line 24 is less than 180 degrees.

Alternatively, as shown in fig. 3 and 4, the four anchor lines 2 at the stern of the work ship 1 and the four anchor lines 2 at the bow of the work ship 1 are arranged in axial symmetry to ensure the balance of the work ship 1 during movement. In this embodiment, the four anchor lines 2 located at the stern of the working vessel 1 and the four anchor lines 2 located at the bow of the working vessel 1 have their symmetry axes collinear with the mooring line 10. It should be noted that the two anchor cables 2 symmetrically disposed to each other have the same retraction speed.

Optionally, as shown in fig. 2, a plurality of automatic anchor cable retractors 5 are further disposed on the workboat 1, the plurality of automatic anchor cable retractors 5 correspond to the plurality of anchor cables 2 one by one, each anchor cable 2 is wound around the corresponding automatic anchor cable retractor 5, and the automatic anchor cable retractors 5 are configured to automatically retract the anchor cables 2, so as to have higher efficiency and precision. In this embodiment, the automatic cable winding and unwinding device 5 is a component in the prior art, and the specific structure and principle of the automatic cable winding and unwinding device are not limited in this embodiment.

As shown in fig. 3 and 4, the plurality of suction anchors 4 are provided, the plurality of suction anchors 4 are divided into three suction anchor groups, the three suction anchor groups are arranged around the target installation position 30 at equal intervals, and the distances between the three suction anchor groups and the target installation position 30 are equal, that is, the three suction anchor groups are located on a circle with the target installation position 30 as a center of the circle, and an angle corresponding to the arc length of each two adjacent suction anchor groups is 120 degrees. Each suction anchor group comprises three suction anchors 4.

The floating type fan mooring cable laying system provided by the embodiment is used for connecting the mooring cable 10 with a mooring chain on the suction anchor 4 when laying the mooring cable, then the operation ship 1 transversely moves along the direction of the designed path 20 by adjusting the lengths of the eight anchor cables 2, meanwhile, the constant tension winch 3 synchronously releases the mooring cable 10 to lay the operation ship on the designed path 20 as required, the constant tension laying can avoid the mismatching of the ship moving speed and the release speed of the mooring cable 10, and the adverse conditions such as twisting of the seabed of the mooring cable 10 and the like are prevented. The mooring lines 10 are laid in a ship-moving mode, after one anchor position stroke is laid, anchor moving is needed and the laying is continued, namely, the two anchor positions are needed to be moved when one mooring line 10 is laid. After the other end of the mooring line 10 is laid to the target installation position, the operating ship 1 is controlled to move to the other suction anchor 4, and the next mooring line 10 is laid until 9 mooring lines 10 are laid.

The working ship 1 in the embodiment moves and displaces through the mooring cable, so that the accuracy is high, the accuracy of a laying path can be ensured, and the laying accuracy of the mooring cable 10 is ensured.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Float formula fan mooring cable laying system for lay the mooring cable of fixed showy formula fan, its characterized in that includes:

the operation ship (1), the operation ship (1) is provided with a plurality of anchor cables (2), one part of the anchor cables (2) is connected to the bow of the operation ship (1), and the other part of the anchor cables is connected to the stern of the operation ship (1);

the constant tension winch (3) is fixedly arranged in the middle of the working ship (1), and the mooring cable (10) is wound on the constant tension winch (3) and is released by constant tension of the constant tension winch (3);

a suction anchor (4) for securing one end of the mooring line (10).

2. Floating fan mooring line laying system according to claim 1, characterized in that the length direction of the work vessel (1) is perpendicular to the length direction of the mooring lines (10).

3. Floating wind turbine mooring line laying system according to claim 1, wherein the constant tension winch (3) comprises a drum on which the mooring line (10) is wound.

4. A floating fan mooring line laying system according to any of claims 1-3, wherein eight anchor lines (2) are provided, four on the fore and aft of the process vessel (1).

5. The floating fan mooring line laying system according to claim 4, wherein the four anchor lines (2) on the bow of the work vessel (1) are a first anchor line (21), a second anchor line (22), a third anchor line (23), and a fourth anchor line (24), respectively, and the first anchor line (21), the second anchor line (22), the third anchor line (23), and the fourth anchor line (24) are sequentially arranged in the width direction of the work vessel (1).

6. Floating fan mooring line laying system according to claim 5, wherein the angle between the first anchor line (21) and the second anchor line (22) is larger than the angle between the third anchor line (23) and the fourth anchor line (24), the angle between the second anchor line (22) and the third anchor line (23) is larger than the angle between the third anchor line (23) and the fourth anchor line (24), and the connection location of the fourth anchor line (24) on the process vessel (1) is closer to a target installation location than the connection location of the first anchor line (21) on the process vessel (1).

7. Floating fan mooring line laying system according to claim 6, wherein the four anchor lines (2) at the stern of the process vessel (1) are arranged axisymmetrically to the four anchor lines (2) at the bow of the process vessel (1).

8. A floating fan mooring line laying system according to any one of claims 1-3 wherein a plurality of automatic anchor line retractors (5) are provided on the work vessel (1), a plurality of automatic anchor line retractors (5) are in one-to-one correspondence with the plurality of anchor lines (2), and the anchor lines (2) are wound around the corresponding automatic anchor line retractors (5).

9. A floating wind turbine mooring line laying system according to any of claims 1-3, wherein a plurality of suction anchors (4) are provided, the plurality of suction anchors (4) being divided into three groups of suction anchors, the three groups of suction anchors being equally spaced around a target installation location and the distances between the three groups of suction anchors and the target installation location being equal.