Anchor chain wet storage structure and fishing method

Abstract

The invention discloses a fishing method of an anchor chain, which comprises the following step of: realizing the fishing process of quickly searching and tieback the anchor chain through an anchor chain wet storage structure with a floating body. The anchor chain is connected with the floating body through the connecting rope, the floating body is located in the seawater area between the seabed and the sea surface, when the anchor chain which is stored on the top face of the seabed in a wet mode is found, the anchor chain can be quickly found for tie-back by finding the floating body, and the problem that the anchor chain which is stored in the wet mode is directly placed on the seabed, and the anchor chain is inconvenient to find for tie-back is solved.

Description

Technical Field

[0001] This invention relates to a wet storage structure for anchor chains and a salvage method, belonging to the field of marine wind-driven construction technology. Background Art

[0002] Floating offshore wind turbines typically employ mooring systems consisting of anchors and anchor chains. The mooring system needs to be installed during the placement and installation of the floating foundation. Before reconnecting the anchor chains, the anchor chains are stored wet on the seabed and need to be retrieved and reconnected to the anchor chains connecting to the floating foundation.

[0003] In the prior art (see Chinese Patent Publication No. CN117698908A), the wet anchor chain is placed directly on the seabed, making it inconvenient to locate and reconnect the anchor chain. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a wet anchor chain storage structure and a salvage method.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a method for salvaging anchor chains, comprising: using a wet anchor chain storage structure with a float to achieve a rapid retrieval and reconnection process for the anchor chain.

[0007] The salvage process includes: locating the corresponding short and long steel wire ropes below by following the two sets of connecting ropes; carefully observing whether the wet short and long steel wire ropes are entangled with the anchor chain; if there is entanglement, it indicates that the anchor chain has a tendency to twist, which further determines the anchor position; then untying the connection between the short and long steel wire ropes and the connecting ropes; connecting the long steel wire rope at the end of the anchor chain to the winch on the ship; connecting the short steel wire rope to the hook of the floating crane; and then lifting the anchor chain to the ship's deck surface to reconnect it with the anchor chain of the floating body foundation.

[0008] The anchor chain wet storage structure includes:

[0009] Anchor chains that are wetted on the top surface of the seabed;

[0010] The anchor chain is connected to an anchor that is magnetically attached and fixed to the seabed.

[0011] A float is installed on the anchor chain of the wet storage vessel via a connecting rope, and the float floats on the sea surface in the seawater.

[0012] The connecting rope and the float are arranged in two sets at intervals.

[0013] The connecting ropes and anchor chains of the first anchor group are connected by short steel wire ropes.

[0014] The connecting rope of the second group away from the anchor is connected to the anchor chain by a long steel wire rope.

[0015] The beneficial effects of this invention are as follows: the anchor chain is connected to a float via a connecting rope, and the float is located in the seawater area between the seabed and the sea surface. When searching for an anchor chain that is wet on the top surface of the seabed, the anchor chain can be quickly located and reconnected by searching the float. This solves the problem that when the wet anchor chain is directly on the seabed, it is inconvenient to search for and reconnect the anchor chain. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the distribution when the anchor chain is wetted, as presented in this invention;

[0017] Figure 2 This is a schematic diagram of the distribution of the wet anchor chain connection and lifting of the present invention;

[0018] In the diagram: 1-Seabed; 2-Anchor; 3-Sea surface; 4-Anchor chain; 5-Connecting rope; 6-Floating body; 7-Short steel wire rope; 8-Long steel wire rope; 9-Hook; 10-Floating crane. Detailed Implementation

[0019] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0020] like Figures 1 to 2 As shown.

[0021] This application discloses a wet anchor chain storage structure, comprising:

[0022] An anchor 2 is fixed in the seabed 1. An anchor chain 4 is connected to the lug plate of the anchor 2. The anchor chain 4 is wetted at the top surface of the seabed 1.

[0023] A float 6 is installed on the anchor chain 4, which is wetted, via a connecting rope 5. The float 6 floats in the seawater on the sea surface 3 above the seabed 1. The connecting rope 5 and the float 6 are in two sets with a 10-meter interval. The float 6 has a buoy with a radius of 0.32m, which provides 1410N of buoyancy, ensuring that the float 6 is in the seawater area between the seabed 1 and the sea surface 3.

[0024] Anchor chain 4 is connected to float 6 via connecting rope 5. Float 6 is located in the seawater area between seabed 1 and sea surface 3. When searching for anchor chain 4 that is wet on the top surface of seabed 1, the anchor chain 4 can be quickly located and reconnected by searching for float 6. This solves the problem that when the anchor chain is wet and directly on the seabed, it is inconvenient to search for and reconnect the anchor chain.

[0025] The connecting rope 5 of the first group of anchors 2 is connected to the anchor chain 4 by a short steel wire rope 7. The bottom end of the short steel wire rope 7 is fixedly connected to the anchor chain 4, and the top end of the short steel wire rope 7 is detachably tied to the connecting rope 5 of the first group.

[0026] The connecting rope 5 of the second group away from anchor 2 is connected to the anchor chain 4 by a long steel wire rope 8. The bottom end of the long steel wire rope 8 is fixedly connected to the end of the anchor chain 4, and the top end of the long steel wire rope 8 is detachably tied to the connecting rope 5 of the first group.

[0027] A method for salvaging anchor chains, using a wet anchor chain storage structure with a float 32, enables rapid locating and reconnection of anchor chain 4.

[0028] Specific process: During construction, anchor 2, composed of suction anchors, is fixed to the seabed 1, and anchor chain 4 is wetted on the top surface of seabed 1. When anchor chain 4 needs to be reconnected to the anchor chain of the floating body foundation, after locating the floating body 6, the divers find the corresponding short steel wire rope 7 and long steel wire rope 8 below by following the two sets of connecting ropes 5. They carefully observe whether the wetted short steel wire rope 7 and long steel wire rope 8 are connected to anchor chain 4. If there is any entanglement, it indicates that anchor chain 4 has a tendency to twist, which further determines the position of anchor 2. Then, the connection between short steel wire rope 7 and long steel wire rope 8 and connecting rope 5 is untied. The long steel wire rope 8 at the end of anchor chain 4 is connected to the winch on the ship, and short steel wire rope 7 is connected to the hook 9 of floating crane 10. Then, anchor chain 4 is lifted to the ship's deck and reconnected to the anchor chain of the floating body foundation. After the reconnection is completed, anchor chain 4 on anchor 2 and the anchor chain of the floating body foundation are lowered together.

Claims

1. A method for salvaging anchor chains, characterized in that, include: The anchor chain (4) can be quickly located and reconnected through the anchor chain wet storage structure with a floating body (32).

2. The method for salvaging anchor chains as described in claim 1, characterized in that, The salvage process includes: following the two sets of connecting ropes (5) to find the corresponding short steel wire rope (7) and long steel wire rope (8) below, and carefully observing whether the wet short steel wire rope (7) and long steel wire rope (8) are connected to the anchor chain (4). If there is any entanglement, it indicates that the anchor chain (4) has a tendency to twist, which further determines the position of the anchor (2); then untie the connection between the short steel wire rope (7) and long steel wire rope (8) and the connecting rope (5), connect the long steel wire rope (8) at the end of the anchor chain (4) to the winch on the ship, connect the short steel wire rope (7) to the hook (9) of the floating crane (10), and then lift the anchor chain (4) to the ship deck and reconnect it with the anchor chain of the floating body foundation.

3. A wet anchor chain storage structure for use in the salvage method according to any one of claims 1 or 2, characterized in that, include: Anchor chain (4) wetted on the top surface of the seabed (1); The anchor chain (4) is connected to an anchor (2) that is attached to the seabed (1).

4. The anchor chain wet storage structure as described in claim 3, characterized in that: A float (6) is installed on the anchor chain (4) of the wet storage via a connecting rope (5), and the float (6) floats on the sea surface (3) of the seabed (1).

5. The anchor chain wet storage structure as described in claim 3, characterized in that: The connecting rope (5) and the float (6) are two sets that are spaced apart.

6. The anchor chain wet storage structure as described in claim 5, characterized in that: The connecting rope (5) of the first group of anchors (2) is connected to the anchor chain (4) by a short steel wire rope (7).

7. The anchor chain wet storage structure as described in claim 5, characterized in that: The connecting rope (5) of the second group away from the anchor (2) is connected to the anchor chain (4) by a long steel wire rope (8).

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