Anchor system laying device and method

Abstract

The invention discloses an anchor system laying device and method, a holding power anchor and a gravity anchor can enter water in sequence through a crane and a crane, the anchor system laying device comprises a winch, a ground command, the crane and the crane, the winch is arranged on a deck of a workboat, the winch is provided with a mooring rope, and the mooring rope can be wound on the winch; the ground wire is arranged on a deck of the workboat; the crane is arranged on a deck of the workboat and provided with a first pulley, and the mooring rope bypasses the first pulley to be connected with the gravity anchor. The crane is provided with a second pulley, a traction rope is wound on the second pulley, the traction rope penetrates through a lifting ring of the holding anchor and is connected to the ground wire, and the second pulley can pull the holding anchor through the traction rope; the crane is arranged on a deck of the workboat, provided with a lifting hook and capable of being connected with the gravity anchor through the lifting hook so as to adjust the position of the gravity anchor.

Description

Technical Field

[0001] This application relates to the field of anchoring technology, and in particular to an anchoring system deployment device and method. Background Technology

[0002] A mooring suspension system is a system that connects underwater devices to a seabed mooring system via cables and utilizes the positive buoyancy provided by buoyancy materials to ensure the entire system remains vertically suspended in the water. Seabed mooring systems suitable for mooring suspension systems typically include gravity anchors and holding anchors.

[0003] To ensure the mooring system functions as designed, the two anchors and their connecting chains must be precisely positioned and positioned according to the design specifications. In related technologies, the gravity anchor and the holding anchor are deployed simultaneously. However, during actual deployment, this can easily lead to significant deviations between the landing points of the gravity and holding anchors and their designed positions, causing the mooring line length and preload to deviate severely from their design values. Furthermore, if the anchor chain connecting the gravity and holding anchors is long, simultaneous deployment of both anchors can cause interference between the mooring system and the ship's hull, equipment, and other structures.

[0004] Currently, there are also some methods for deploying gravity anchors and holding anchors in a certain order, but these methods require a lot of marine work equipment to be installed on the working vessel, and the operation process is cumbersome and complicated. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes an anchor placement device that can use two devices, a crane and a hoist, to sequentially place holding anchors and gravity anchors into the water.

[0006] This application also proposes an anchor placement method having the above-mentioned anchor placement device.

[0007] According to a first aspect of this application, an anchoring deployment device is applied to a seabed anchoring system, which includes a gravity anchor, a holding anchor, and an anchor chain. The anchor chain connects the gravity anchor and the holding anchor. The anchoring deployment device includes a winch, a ground anchor, a crane, and a hoist. The winch is located on the deck of a work vessel and is equipped with a mooring cable, which the winch can wind. The ground anchor is located on the deck of the work vessel. The crane is located on the deck of the work vessel and is equipped with a first pulley. The mooring cable passes around the first pulley and connects to the gravity anchor. The crane is equipped with a second pulley on which a traction rope is wound. The traction rope passes through the sling of the holding anchor and is connected to the ground anchor. The second pulley can pull the holding anchor via the traction rope. The hoist is located on the deck of the work vessel and is equipped with a hook. The hoist can connect to the gravity anchor via the hook to adjust the position of the gravity anchor.

[0008] The anchoring device according to the embodiments of this application has at least the following beneficial effects: the mooring cable is connected to the gravity anchor via the first pulley of the crane. During the process of the seabed anchor being lowered to the seabed, the mooring cable plays a traction role, ensuring that the seabed anchor is stably lowered to the preset position; the traction rope on the crane, connected to the holding anchor via the second pulley, can raise the height of the holding anchor, allowing it to detach from the deck of the work vessel, facilitating the holding anchor to drive the anchor chain into the water first; the crane can raise the height of the gravity anchor, allowing it to detach from the deck of the work vessel and reach the working area of ​​the crane, facilitating the entry of the gravity anchor into the water within the working area of ​​the crane, ensuring that the seabed anchor is accurately lowered to the preset position; only two devices, the crane and the hoist, are needed on the deck of the work vessel to complete the sequential entry of the holding anchor and the gravity anchor into the water, without the need for excessive equipment, reducing costs and simplifying the operation process.

[0009] According to some embodiments of this application, the first pulley is located on the central axis of the crane, and the winch is located on the projection line of the central axis of the crane onto the deck.

[0010] According to some embodiments of this application, the crane includes a base and a rotating assembly, the rotating assembly being rotatably connected to the base and capable of being rotated back to a position near the bow or rotated out to the outside of the stern; the hook is disposed on the rotating assembly, and the hook is connected to the gravity anchor via a lifting rope.

[0011] According to some embodiments of this application, the rotating assembly includes a first rotating arm and a second rotating arm, one end of the first rotating arm is rotatably connected to the base, and the other end of the first rotating arm is rotatably connected to one end of the second rotating arm; The other end of the second rotating arm is provided with a first rope, which is connected to the hook. The first rotating arm and the second rotating arm are connected by a second rope, which is used to drive the first rotating arm and the second rotating arm to rotate relative to each other. The first rotating arm and the base are connected by a third rope, which is used to drive the first rotating arm to rotate relative to the base.

[0012] According to the second aspect of this application, the anchor placement method employs the above-described anchor placement device and includes: The seabed mooring was placed on the deck of the work vessel; Connect the mooring cable on the winch to the gravity anchor; Connect the traction rope wound on the second pulley to the gripping anchor; The traction rope pulls the holding anchor, raising it to a certain height. After the holding anchor is raised, the traction rope is released, allowing the holding anchor to enter the water and dragging the anchor chain into the water until the anchor chain is taut. Disconnect the tow rope from the ground and retrieve the tow rope; The crane raises the gravity anchor to a height that detaches it from the deck of the work vessel and places it within the crane's working area. The crane lowers the height of the gravity anchor, allowing it to enter the water until the mooring line is taut. Once the mooring line is taut, the crane is disconnected from the gravity anchor, and the winch releases the mooring line until the anchor reaches the seabed.

[0013] The anchoring method according to the embodiments of this application has at least the following beneficial effects: Using the anchoring device of the first aspect of this application, the mooring cable is connected to the gravity anchor via the first pulley of the crane. During the process of the seabed anchor being lowered to the seabed, the mooring cable plays a traction role, ensuring that the seabed anchor is stably lowered to the preset position. The traction rope on the crane, connected to the holding anchor via the second pulley, can raise the height of the holding anchor, causing it to detach from the deck of the work vessel, facilitating the holding anchor to drive the anchor chain into the water first. The crane can raise the height of the gravity anchor, causing it to detach from the deck of the work vessel and reach the working area of ​​the crane, facilitating the gravity anchor to enter the water in the working area of ​​the crane, ensuring that the seabed anchor is accurately lowered to the preset position. Only two devices, the crane and the hoist, on the deck of the work vessel are needed to complete the sequential lowering of the holding anchor and the gravity anchor, without requiring excessive equipment, reducing costs and simplifying the operation process.

[0014] According to some embodiments of this application, placing the seabed mooring on the deck of the work vessel includes: The holding anchor is placed on the deck of the work vessel using a lifting device, with the holding anchor facing the stern of the work vessel; A lifting device is used to place a gravity anchor on the deck of the work vessel, with the gravity anchor facing the bow of the work vessel. An anchor chain is used to connect the holding anchor and the gravity anchor.

[0015] According to some embodiments of this application, connecting the mooring cable on the winch to the gravity anchor includes: The mooring cable on the winch is looped around the first pulley; The mooring cable, which passes around the first pulley, is connected to the gravity anchor.

[0016] According to some embodiments of this application, connecting the traction rope wound on the second pulley to the gripping anchor includes: The traction rope wound on the second pulley passes through the swivel of the gripping anchor; Secure the traction rope that passes through the gripping anchor to the ground.

[0017] According to some embodiments of this application, the traction rope pulls the gripping anchor, causing the gripping anchor to rise in height, including: After the holding anchor is raised to a certain height, the crane swings outwards towards the stern of the ship, so that the holding anchor is outside the deck area of ​​the working vessel.

[0018] According to some embodiments of this application, the crane includes a base and a rotating assembly, the crane raising the gravity anchor to a height such that the gravity anchor is detached from the deck of the work vessel and located in the crane's working area, including: The rotating component rotates relative to the base, causing the rotating component to extend to the outside of the stern; Connect the lifting rope to the hook, and connect the lifting rope to the gravity anchor.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The present application will be further illustrated below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments illustrated in the following drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0021] Figure 1 This is a schematic diagram of the anchor placement device according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the seabed anchorage in the anchorage deployment device of this application embodiment; Figure 3 This is a schematic diagram of the mooring cable connecting to the gravity anchor in the anchor deployment device of this application embodiment; Figure 4 This is a schematic diagram of the traction rope connecting the holding anchor in the anchoring deployment device of this application embodiment; Figure 5 This is a schematic diagram of the traction rope holding anchor in the anchor laying device of this application embodiment; Figure 6 This is a schematic diagram of the holding anchor being inserted into the water in the anchoring deployment device of this application embodiment; Figure 7 This is a schematic diagram of the gravity anchor being submerged in water in the anchor placement device of this application embodiment; Figure 8 This is a flowchart of the anchor placement method according to an embodiment of this application; Figure 9 This is a flowchart illustrating the placement of the seabed anchor on the deck in the anchor deployment method of this application embodiment; Figure 10 This is a flowchart illustrating the connection of the mooring cable to the gravity anchor in the anchor deployment method of this application embodiment; Figure 11 This is a flowchart illustrating the connection of the traction rope to the holding anchor in the anchor placement method of this application embodiment; Figure 12 This is a flowchart illustrating the anchor placement method in this application, where the traction rope holding anchor is located outside the deck area. Figure 13This is a flowchart illustrating the anchor placement method in this application, where the crane drives the gravity anchor to be positioned within the crane's working area.

[0022] Figure label: 101. Gravity anchor; 102. Holding anchor; 103. Anchor chain; 201. Winch; 202. Mooring cable; 301. Earthly Decree; 401. Crane; 402. First pulley; 403. Second pulley; 404. Traction rope; 501. Crane; 502. Base; 503. First rotating arm; 504. Second rotating arm; 505. First rope; 506. Hook; 507. Second rope; 508. Third rope. Detailed Implementation

[0023] The embodiments of this application are described in detail below with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] This application provides an anchoring device, which includes a winch 201, a ground anchor 301, a crane 401, and a hoist 501. Meanwhile, as... Figure 2 As shown, the seabed mooring system involved in this application includes a gravity anchor 101, a holding anchor 102, and an anchor chain 103. The anchor chain 103 connects the gravity anchor 101 and the holding anchor 102 and has a certain length. When the mooring system is on the seabed, the gravity anchor 101 can provide mooring force to resist slippage and stability to resist capsizing. The holding anchor 102, through its own structural design, submerges into the seabed soil and uses the resistance of the soil to provide a strong holding force. Compared with the gravity anchor 101, which relies solely on its weight, the holding anchor 102, due to its relatively lightweight structure, can utilize the mechanical properties of the soil to provide a holding force that is tens or even hundreds of times its own weight. Especially in applications with great water depth and those requiring strong tensile strength to resist complex underwater dynamic and static loads, the application of the holding anchor 102 can save materials and transportation and installation costs. The anchor chain 103 is used to connect the gravity anchor 101 and the holding anchor 102 and transmit the tension between the two anchors.

[0029] Furthermore, the winch 201 works in conjunction with the crane 401, and uses the mooring cable 202 to pull the seabed anchor mooring, ensuring that the anchor mooring is smoothly lowered to the seabed. The crane 401 works in conjunction with the ground anchor 301, and uses the towing rope 404 to send the holding anchor 102 into the water. The holding anchor 102 will also drag part of the anchor chain 103 into the water. After the holding anchor 102 is in the water, the crane 501 can transport the gravity anchor 101 to the working area of ​​the crane 401, so that the gravity anchor 101 can be lowered into the water under the action of the mooring cable 202.

[0030] The contents of this application are described in detail below with reference to specific embodiments. It should be noted that the following description is merely illustrative and not a specific limitation of this application.

[0031] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, winch 201 is fixedly mounted on the deck of the work vessel, and there is a certain distance between winch 201 and the stern, which facilitates the placement of the seabed mooring in the deck area from winch 201 to the stern. One end of mooring cable 202 is connected to winch 201, and the other end is connected to gravity anchor 101. When the seabed mooring detaches from the deck of the work vessel, winch 201 can lower the height of the seabed mooring by releasing mooring cable 202 until the mooring reaches the seabed. Winch 201 can also raise the height of the seabed mooring by winding mooring cable 202, facilitating the retrieval of the seabed mooring.

[0032] Furthermore, the crane 401 is installed on the deck of the work vessel and is located near the stern. When the seabed mooring is placed on the deck of the work vessel, the seabed mooring is located in the deck area between the crane 401 and the winch 201. Specifically, the crane 401 here can be an A-type gantry crane.

[0033] Meanwhile, the crane 401 is equipped with a crossbeam, on which a first pulley 402 capable of free rotation is mounted. Specifically, the first pulley 402 can be a universal pulley. The mooring cable 202, led from the winch 201, passes over the first pulley 402 and connects to the gravity anchor 101. The crane 401 extends from the stern beyond the deck area, ensuring that its crossbeam and the first pulley 402 are located outside the deck area. This guarantees that the seabed mooring under the traction of the mooring cable 202 will first leave the deck area and enter the water after leaving the deck area, avoiding interference between the seabed mooring and the working vessel or other equipment during the water entry process. Furthermore, the outer edge of the first pulley 402 has a corresponding groove to facilitate the insertion of the mooring cable 202 into the first pulley 402, ensuring the contact area between the first pulley 402 and the mooring cable 202.

[0034] In addition, a second pulley 403 that can rotate freely is provided on the crossbeam. The second pulley 403 can cooperate with the ground anchor 301 and raise the height of the holding anchor 102 through the traction rope 404, so that the holding anchor 102 can enter the water first. Specifically, the traction rope 404 is wound around the second pulley 403. The traction rope 404 leading from the second pulley 403 passes through the lifting ring of the holding anchor 102 and is fixedly connected to the ground anchor 301. As the second pulley 403 winds the traction rope 404, the traction rope 404 can apply a traction force to the holding anchor 102, thereby changing the position of the holding anchor 102. Understandably, the second pulley 403 is also located outside the deck area and at a certain height. The second pulley 403 winds up the traction rope 404, causing the traction rope 404 to lift the holding anchor 102 and detach it from the deck. After the holding anchor 102 is detached from the deck area, the second pulley 403 releases the traction rope 404, which facilitates the holding anchor 102 entering the water, thereby avoiding interference between the holding anchor 102 and the working vessel or other equipment during the water entry process.

[0035] Furthermore, crane 501 is located on the deck of the work vessel and is equipped with hook 506 for connecting gravity anchor 101. When holding anchor 102 is launched, it also drags part of anchor chain 103 into the water, but gravity anchor 101 remains on the deck of the work vessel. At this time, crane 501 assists gravity anchor 101 to reach the working area of ​​crane 401, facilitating its launch under the action of mooring cable 202. Specifically, when crane 501 is working, it extends from the stern beyond the deck of the work vessel. Under the traction of crane 501, gravity anchor 101 is raised and moved out of the deck area, allowing it to reach the working area of ​​crane 401. Once gravity anchor 101 reaches the working area, the work of crane 501 is completed, and mooring cable 202 then pulls gravity anchor 101.

[0036] In some embodiments, after the entire seabed mooring system is lowered into the water, it is primarily pulled and lowered by the mooring cable 202. During this process, it is necessary to ensure the overall stability of the working vessel system. It is understood that when the mooring cable 202 is located on the central axis of the crane 401, the center of gravity of the seabed mooring system is also located on the central axis of the crane 401, which helps ensure system stability. The mooring cable 202 is laid out by the first pulley 402; therefore, the first pulley 402 is positioned on the central axis of the crane 401. Similarly, the mooring cable 202 is led out by the winch 201. Preferably, the winch 201 is also located on the projection line of the central axis of the crane 401 onto the deck to ensure the system's center of gravity is balanced.

[0037] In some embodiments, the crane 501 includes a base 502 and a rotating assembly. The base 502 is fixedly mounted on the deck, and the rotating assembly is rotatably connected to the base 502. When the working vessel does not need to lay the seabed mooring, the rotating assembly is rotated back to a position close to the bow. When the working vessel needs to lay the seabed mooring, the rotating assembly is rotated out to the outside of the stern to facilitate the delivery of the gravity anchor 101 to the working area of ​​the crane 401.

[0038] The hook 506 is located on the rotating assembly and is equipped with a lifting rope. One end of the lifting rope is connected to the hook 506, and the other end is connected to the gravity anchor 101. The hook 506 can pull the gravity anchor 101 through the lifting rope, so that the gravity anchor 101 is lifted off the deck and reaches the working area of ​​the crane 401.

[0039] In some embodiments, such as Figure 1 and Figure 7 As shown, the rotating assembly includes a first rotating arm 503 and a second rotating arm 504. One end of the first rotating arm 503 is rotatably connected to the base 502, and the other end of the first rotating arm 503 is rotatably connected to one end of the second rotating arm 504. The other end of the second rotating arm 504 is used to connect to the hook 506.

[0040] Furthermore, the second rotating arm 504 is equipped with a first rope 505, which is connected to a hook 506. It is understood that the first rope 505 can be extended or retracted to raise or lower the height of the hook 506. Since the hook 506 is connected to a gravity anchor 101, the hook 506 can drive the gravity anchor 101 to adjust its height.

[0041] Meanwhile, the first rotating arm 503 and the second rotating arm 504 are connected by a second rope 507. The second rotating arm 504 is equipped with a corresponding winding and unwinding device for winding or unwinding the second rope 507. A pulley is provided between the first rotating arm 503 and the second rotating arm 504, around which the second rope 507 is wound, facilitating its deployment. It is understood that when the winding and unwinding device winds or unwinds the second rope 507, the first rotating arm 503 and the second rotating arm 504 can rotate relative to each other, thereby adjusting the position of the hook 506 and the gravity anchor 101 connected to the hook 506.

[0042] In addition, the first rotating arm 503 and the base 502 are connected by a third rope 508. The base 502 is also equipped with a corresponding winding and unwinding device for winding or unwinding the third rope 508. It can be understood that when the winding and unwinding device here winds or unwinds the third rope 508, the first rotating arm 503 can rotate relative to the base 502, thereby adjusting the position of the first rotating arm 503, and thus adjusting the position of the hook 506 and the gravity anchor 101 connected to the hook 506.

[0043] Based on the above-described anchor placement device, various embodiments of the anchor placement method of this application are presented below.

[0044] like Figure 8 As shown, Figure 8 This is a flowchart of an anchor placement method provided in one embodiment of this application. The anchor placement method can be applied to the above-mentioned anchor placement device. The anchor placement method includes, but is not limited to, steps S110, S120, S130, S140, S150, S160 and S170.

[0045] Step S110: Place the seabed mooring on the deck of the work vessel; Step S120: Connect the mooring cable 202 on the winch 201 to the gravity anchor 101; Step S130: Connect the traction rope 404 wound on the second pulley 403 to the gripping anchor 102; In step S140, the traction rope 404 pulls the holding anchor 102 to raise its height; after the holding anchor 102 is raised, the traction rope 404 is released to allow the holding anchor 102 to enter the water and drag the anchor chain 103 into the water until the anchor chain 103 is taut. Step S150: Disconnect the traction rope 404 from the ground clamp 301 and retrieve the traction rope 404; In step S160, the crane 501 raises the gravity anchor 101 to a height so that the gravity anchor 101 is detached from the deck of the work vessel and located in the working area of ​​the crane 401. In step S170, the crane 501 lowers the height of the gravity anchor 101, causing the gravity anchor 101 to enter the water until the mooring cable 202 is tensioned; once the mooring cable 202 is tensioned, the connection between the crane 501 and the gravity anchor 101 is released, and the winch 201 releases the mooring cable 202 until the anchor reaches the seabed.

[0046] In some embodiments, when the working vessel has not yet deployed the seabed mooring, the seabed mooring is placed on the deck of the working vessel. Further, since the seabed mooring needs to be deployed or retrieved via mooring cable 202 after entering the water, the mooring cable 202 needs to be connected to the gravity anchor 101. Further, the holding anchor 102 needs to be launched before the gravity anchor 101, and the holding anchor 102 needs to be detached from the deck under the traction of crane 401 and launched into the water after detachment. Therefore, the traction rope 404 on the second pulley 403 of crane 401 needs to be connected to the holding anchor 102. At this point, the preparation work for launching the seabed mooring is completed.

[0047] Based on this, such as Figure 5 and Figure 6 As shown, to ensure the holding anchor 102 is launched first, the traction rope 404 on the second pulley 403 pulls the holding anchor 102 to a higher height. After being raised, the holding anchor 102 detaches from the deck of the work vessel and reaches the working area of ​​the crane 401. As the traction rope 404 is released, the holding anchor 102 gradually lowers until it enters the water. Since the holding anchor 102 is connected to the anchor chain 103, it also drags part of the anchor chain 103 into the water. At this time, the gravity anchor 101 is still placed on the deck of the work vessel, and the weight of the gravity anchor 101 is much greater than the weight of the holding anchor 102. Therefore, as the holding anchor 102 descends, the anchor chain 103 gradually tightens until it bears the entire weight of the holding anchor 102, so that the traction rope 404 no longer plays a pulling role. Since the traction rope 404 no longer bears the weight of the holding anchor 102, the connection between the traction rope 404 and the grounding rope 301 can be released, and the traction rope 404 can be retrieved. With this, the launching of the holding anchor 102 is complete.

[0048] After the holding anchor 102 is launched, the crane 501 raises the gravity anchor 101 to a higher height. The raised gravity anchor 101 then detaches from the deck of the work vessel and is transported by the crane 501 to the working area of ​​the crane 401. Figure 7 As shown, as the crane 501 gradually lowers the height of the gravity anchor 101, the gravity anchor 101 enters the water. At this point, the weight of the gravity anchor 101 is entirely supported by the crane 501, and the holding anchor 102 is located at the bottom of the gravity anchor 101. Since both the crane 501 and the mooring cable 202 are connected to the gravity anchor 101, and the crane 501 continues to lower the height of the gravity anchor 101, the weight of the gravity anchor 101 is gradually transferred to the mooring cable 202. When the entire weight of the gravity anchor 101 is supported by the mooring cable 202, the work of the crane 501 is completed, and the connection between the crane 501 and the gravity anchor 101 can be released. The entire process of the subsequent mooring gradually sinking to the seabed is completed under the traction of the mooring cable 202.

[0049] Additionally, refer to Figure 9In step S110: placing the seabed mooring on the deck of the work vessel may include, but is not limited to, the following steps: Step S210: Use lifting equipment to place the holding anchor 102 on the deck of the work vessel, so that the holding anchor 102 faces the stern of the work vessel. Step S220: Use lifting equipment to place the gravity anchor 101 on the deck of the work vessel, so that the gravity anchor 101 faces the bow of the work vessel. In step S230, anchor chain 103 is used to connect holding anchor 102 and gravity anchor 101.

[0050] In some embodiments, an anchor chain 103 is used to connect the holding anchor 102 and the gravity anchor 101, so that the holding anchor 102, the gravity anchor 101 and the anchor chain 103 form a complete seabed anchoring system.

[0051] Since both the holding anchor 102 and the gravity anchor 101 are launched from the stern of the work vessel, with the holding anchor 102 launched before the gravity anchor 101, to facilitate the sequential launching of the holding anchor 102 and the gravity anchor 101, when the seabed mooring is placed on the deck of the work vessel, the holding anchor 102 faces the stern of the work vessel, while the gravity anchor 101 faces the bow. In this configuration, after the holding anchor 102 is launched first, it can naturally drag the anchor chain 103 into the water, and the gravity anchor 101 will be launched after the anchor chain 103 has entered the water. This ensures that the holding anchor 102, anchor chain 103, and gravity anchor 101 enter the water sequentially, avoiding unpredictable entanglement of the anchor chain 103.

[0052] Specifically, in order to facilitate the placement of the holding anchor 102, gravity anchor 101 and anchor chain 103 in the intended positions on the deck, the work vessel can use appropriate lifting equipment to transfer the positions of the holding anchor 102, gravity anchor 101 and anchor chain 103, ensuring that the holding anchor 102, gravity anchor 101 and anchor chain 103 are arranged in an orderly manner.

[0053] Additionally, refer to Figure 10 In step S120: connecting the mooring cable 202 on the winch 201 to the gravity anchor 101 may include, but is not limited to, the following steps: Step S310: The mooring cable 202 on the winch 201 is passed around the first pulley 402; In step S320, the mooring cable 202, which passes around the first pulley 402, is connected to the gravity anchor 101.

[0054] In some embodiments, such as Figure 3 As shown, when deploying the seabed anchorage, the mooring cable 202 on the winch 201 must ensure that the seabed anchorage is kept away from the work vessel and other equipment on the work vessel to avoid interference with other structures during the deployment process. Additionally, it is also necessary to prevent friction damage to the mooring cable 202 due to winding and unwinding.

[0055] Therefore, the crossbeam of the crane 401 is equipped with a first pulley 402, which is located outside the deck area. The mooring cable 202 first passes around the first pulley 402, which is away from the deck of the work vessel, and then connects to the gravity anchor 101. This ensures that the seabed mooring is lowered into the water at the position of the first pulley 402, so that the seabed mooring is away from the deck of the work vessel during the deployment process. At the same time, the first pulley 402 can rotate freely, and the first pulley 402 and the mooring cable 202 experience rolling friction, which can effectively reduce the friction on the mooring cable 202 and prevent damage to the mooring cable 202.

[0056] Additionally, refer to Figure 11 In step S130: the traction rope 404 wound on the second pulley 403 is connected to the gripping anchor 102, which may include, but is not limited to, the following steps: In step S410, the traction rope 404 wound on the second pulley 403 passes through the shackle of the gripping anchor 102; Step S420: Secure the traction rope 404 to the ground anchor 301.

[0057] In some embodiments, such as Figure 4 As shown, during the lowering of the holding anchor 102, it needs to be kept away from the deck of the working vessel and other equipment on the deck to avoid structural interference. To this end, the crossbeam of the crane 401 is equipped with a second pulley 403, which is located outside the deck area. The traction rope 404 wound on the second pulley 403 passes through the lifting ring of the holding anchor 102 and is secured to the ground anchor 301. Under the traction of the traction rope 404, the holding anchor 102 can be raised to a height corresponding to the second pulley 403, away from the deck, thereby preventing interference with other structures during the lowering process.

[0058] Additionally, refer to Figure 12 In step S140: the traction rope 404 pulls the holding anchor 102, raising the holding anchor 102 to a higher height; after the holding anchor 102 is raised to a higher height, the traction rope 404 is released, allowing the holding anchor 102 to enter the water and dragging the anchor chain 103 into the water until the anchor chain 103 is tensioned. This may include, but is not limited to, the following steps: In step S510, after the holding anchor 102 is raised to a higher height, the crane 401 swings outward toward the stern of the ship so that the holding anchor 102 is outside the range of the working ship's deck.

[0059] In some embodiments, to further avoid structural interference between the holding anchor 102 and the deck or equipment on the deck during the lowering process, after the holding anchor 102 is raised to a higher height under the traction of the towing rope 404, the crane 401 continues to swing outward from the stern to increase the distance between the holding anchor 102 and the deck of the working vessel.

[0060] Additionally, refer to Figure 13 In step S160: the crane 501 raises the gravity anchor 101 to a height so that the gravity anchor 101 is detached from the deck of the work vessel and located in the working area of ​​the crane 401, which may include, but is not limited to, the following steps: In step S610, the rotating assembly rotates relative to the base 502, causing the rotating assembly to extend to the outside of the stern. Step S620: Connect the lifting rope to the hook 506, and connect the lifting rope to the gravity anchor 101.

[0061] In some embodiments, during the launching of the gravity anchor 101, it is also necessary to avoid structural interference between the gravity anchor 101 and the deck or equipment on the deck. The gravity anchor 101 is transported to the working area of ​​the crane 401 by the crane 501. The component of the crane 501 used to connect the gravity anchor 101 is the hook 506 on the rotating assembly. Therefore, when the crane 501 transports the gravity anchor 101, the position of the crane 501 needs to be aligned with the working area of ​​the crane 401. For this purpose, the rotating assembly rotates relative to the base 502, causing the rotating assembly to extend outward from the stern. On this basis, a lifting rope is connected to the hook 506 and connected to the gravity anchor 101, ensuring that the crane 501 can transport the gravity anchor 101 to the working area of ​​the crane 401 while raising the gravity anchor 101 to a certain height.

[0062] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A mooring deployment apparatus for use with a subsea mooring, the subsea mooring comprising a gravity anchor, a grip anchor and a chain, the chain connecting the gravity anchor and the grip anchor, characterised in that, The application relates to a method for deploying a seabed anchor system on a workship. A winch is arranged on the deck of the workship, the winch is provided with a mooring cable, and the winch can wind the mooring cable; A ground line is arranged on the deck of the workship; A crane is arranged on the deck of the workship, the crane is provided with a first pulley, the mooring cable is connected to the gravity anchor through the first pulley; the crane is provided with a second pulley, a traction rope is wound on the second pulley, the traction rope passes through a hanger ring of the grip anchor, the traction rope is connected to the ground line, and the second pulley can pull the grip anchor through the traction rope; A crane is arranged on the deck of the workship, the crane is provided with a first pulley, the mooring cable is connected to the gravity anchor through the first pulley; the crane is provided with a second pulley, a traction rope is wound on the second pulley, the traction rope passes through a hanger ring of the grip anchor, the traction rope is connected to the ground line, and the second pulley can pull the grip anchor through the traction rope; 2. A mooring launch device according to claim 1, characterised in that, The first pulley is located on the central axis of the crane, and the winch is located on the projection line of the central axis of the crane on the deck.

3. The mooring deployment apparatus of claim 1, wherein, The crane comprises a base and a rotating assembly, the rotating assembly is rotationally connected to the base, and the rotating assembly can be retracted to a position close to the bow of the workship through rotation or be unfolded to the outside of the stern of the workship through rotation; the hook is arranged on the rotating assembly, and the hook is connected to the gravity anchor through a hoisting rope.

4. A mooring launch device according to claim 3, wherein, The rotating assembly comprises a first rotating arm and a second rotating arm, one end of the first rotating arm is rotationally connected to the base, and the other end of the first rotating arm is rotationally connected to one end of the second rotating arm; The other end of the second rotating arm is provided with a first rope, the first rope is connected to the hook, the first rotating arm and the second rotating arm are connected through a second rope, the second rope is used for driving the first rotating arm and the second rotating arm to rotate relatively, the first rotating arm and the base are connected through a third rope, and the third rope is used for driving the first rotating arm to rotate relative to the base.

5. A mooring deployment method using a mooring deployment device as claimed in any one of claims 1 to 4, characterised in that, The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship.

6. The method of mooring deployment according to claim 5, wherein, The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship.

7. The method of mooring deployment according to claim 5, wherein, The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship. The application relates to a method for deploying a seabed anchor system on a workship.

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9. The method of mooring deployment of claim 5, wherein, The traction rope pulls the grip anchor to lift the height of the grip anchor, comprising: After the grip anchor is lifted to a height, the crane swings outwardly to the stern, so that the grip anchor is outside the range of the deck of the work ship.

10. The method of mooring deployment of claim 5, wherein, The crane comprises a base and a rotating assembly, the crane lifts the height of the gravity anchor to make the gravity anchor out of the deck of the work ship and in the working area of the crane, comprising: The rotating assembly rotates relative to the base to deploy the rotating assembly to the outside of the stern; The hoisting rope is connected on the hook, and the hoisting rope and the gravity anchor are connected.

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