Tensioned multi-anchor submerged buoy system with adjustable working water depth and deployment and recovery method

Abstract

The present invention discloses a tensioned multi-anchor submerged buoy system with adjustable working water depth, comprising a buoyancy platform, a limiter and a counterweight block. The buoyancy platform has a plurality of anchor chain connectors evenly arranged along a vertical axis, each anchor chain connector is connected to a group of anchors; the top end of the counterweight cable is connected to the underwater equipment, the bottom end of the counterweight cable passes through the buoyancy platform and is connected to the counterweight block, and a limiter whose relative position changes is arranged on the counterweight cable. The present invention has the advantages of simple deployment and recovery, which can be completed by only one construction ship, greatly saving the construction cost, and the system has the ability of multiple deployment and recovery, high maintainability, stable underwater posture, anti-heave and anti-torsion capabilities, small displacement under the action of ocean currents, and can meet the precise functional use requirements of large underwater equipment; it has the advantages of wide applicable water depth range, especially outstanding advantages in sea areas with complex ocean current environment.

Description

Technical Field

[0001] The invention relates to the technical field of marine scientific research, and in particular to a tensioned multi-anchor submerged buoy system with adjustable working water depth and a deployment and recovery method. Background Art

[0002] With the continuous deepening of marine scientific research, the marine environment monitoring technology needs to be continuously improved. Large-scale marine underwater environment monitoring equipment is deployed to the required working depth with the submerged buoy system as the carrier. The technology of the submerged buoy system is particularly important.

[0003] At present, most of the submerged buoy systems on the market use a single anchor system. The single anchor system has the disadvantages of being significantly affected by the tide, having a large range of activities, and being easily entangled between the cable and the underwater equipment. In addition, the single anchor system is difficult to recover, has poor maintainability, and can only collect ocean data at a fixed water depth. Moreover, the marine environment is complex and changeable, and the construction window period is short. Generally, the deployment of a multi-anchor system requires the cooperation of at least two construction ships, and the construction cost is relatively high. Therefore, how to achieve adjustable working depth of large underwater equipment, simple deployment and recovery of the submerged buoy system, stable posture underwater, and the ability to be deployed and recovered multiple times, and adapt to a wide range of water depths, is a key problem to be solved by the present invention. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of the above-mentioned background technology, and to propose a tensioned multi-anchor submerged buoy system with adjustable working water depth and a deployment and recovery method. The present invention realizes the adjustable working water depth of large underwater equipment, the deployment and recovery of the submerged buoy system are simple, the posture underwater is stable, and it has the ability to be deployed and recovered multiple times, and has the advantage of adapting to a wide range of water depths.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The tensioned multi-anchor submersible buoy system with adjustable working water depth includes a buoyancy platform, a stopper and a counterweight. The buoyancy platform is provided with multiple anchor chain connectors evenly arranged along the vertical axis, and each anchor chain connector is connected to a set of anchor systems.

[0007] The top end of the counterweight cable is connected to the underwater equipment, the bottom end of the counterweight cable passes through the buoyancy platform and is connected to the counterweight block, and a limiter whose relative position can be changed is arranged on the counterweight cable.

[0008] As a further solution of the present invention: one end of the anchor chain of the anchor system is connected to the anchor chain connector of the buoyancy platform, and the other end of the anchor chain is connected to the anchor block.

[0009] As a further solution of the present invention: the anchor chain is composed of a metal segment anchor chain and a non-metal segment anchor chain, the length of the non-metal segment anchor chain is greater than that of the metal segment anchor chain, and the anchor chain can be in a tensioned state as long as the buoyancy platform provides positive buoyancy, thereby providing tension for the buoyancy platform to resist external loads.

[0010] As a further solution of the present invention: a groove body for guiding and fixing the limiter is designed in the middle of the buoyancy platform.

[0011] As a further solution of the present invention: the limiter is provided with a locker, and the locker is used to adjust the relative position of the limiter on the counterweight cable.

[0012] As a further solution of the present invention: the limiter is further provided with a limit block, and the limit block is adapted to the trough body of the buoyancy platform.

[0013] As a further solution of the present invention: the underwater equipment is located directly below the satellite beacon and is connected to the satellite beacon via a cable.

[0014] A method for deploying and recovering a tensioned multi-anchor submersible buoy system with adjustable working water depth comprises the following steps:

[0015] Step 1: separately deploy anchor blocks to the predetermined positions, and fasten the anchor blocks to the anchor chain connectors of the buoyancy platform through anchor chains, then connect the counterweight blocks to the buoyancy platform through the stoppers of the counterweight cables, and then make the buoyancy platform reach the predetermined water depth under the pulling force of multiple anchor chains;

[0016] Step 2: The buoyancy platform, underwater equipment and satellite beacon of the buoy system are deployed in sequence, and the deployment of the entire system is completed.

[0017] As a further solution of the present invention: before step 1, first survey the topography of the deployment point, and then select the anchor block deployment location based on the topographic survey results.

[0018] As a further solution of the present invention: in step 2, the relative position of the limiter on the counterweight cable is adjusted, and then the limiter is locked, and the underwater equipment is deployed to a new working water depth, so that the working water depth of the underwater equipment can be adjusted.

[0019] Beneficial effects of the present invention:

[0020] 1. The working water depth of the underwater equipment can be adjusted by simply changing the relative position of the limiter on the counterweight cable. This novel design can achieve adjustable working water depth of large underwater equipment;

[0021] 2. The anchor block is fastened to the anchor chain connector of the buoyancy platform through the anchor chain, and then the counterweight block is connected to the buoyancy platform through the limiter of the counterweight cable. Due to the geometric angle set between the anchor chains and the tension of the anchor chains, the buoyancy platform reaches the predetermined water depth. The buoyancy platform reaches the predetermined water depth under the tension of multiple anchor chains;

[0022] 3. Easy deployment and recovery, which can be completed by only one construction ship, greatly saving construction costs. The system has the ability to deploy and recover multiple times, high maintainability, stable underwater posture, anti-heave and anti-torsion capabilities, small displacement under the action of ocean currents, and can meet the precise functional use requirements of large underwater equipment; it is applicable to a wide range of water depths, especially in sea areas with complex ocean current environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a top view schematic diagram of the present invention.

[0026] In the figure: 1. Satellite beacon; 2. Underwater equipment; 3. Buoyancy platform; 4. Limiter; 5. Anchor chain; 6. Anchor block; 7. Counterweight cable; 8. Counterweight block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 As shown, the present invention is a tensioned multi-anchor submerged buoy system with adjustable working water depth, comprising a satellite beacon 1, an underwater device 2, a buoyancy platform 3, a stopper 4, an anchor chain 5, an anchor block 6, a counterweight cable 7, and a counterweight block 8. The satellite beacon 1 is located above the underwater device 2 and is connected to the underwater device 2 through a cable. The satellite beacon 1 is communicatively connected to a signal receiver of a construction ship, so when the test of the multi-anchor submerged buoy system is completed, a signal can be sent to the signal receiver of the construction ship through the satellite beacon 1, so as to facilitate the recovery of the multi-anchor submerged buoy system. The underwater device 2 can be a common professional device, which uses the multi-anchor submerged buoy system as a carrier to collect underwater information;

[0029] The bottom of the underwater equipment 2 is connected to the counterweight block 8 through the counterweight cable 7, and the counterweight cable 7 passes through the buoyancy platform 3. The counterweight cable 7 is provided with a limiter 4 whose relative position can be changed, and the counterweight block 8 is connected to the buoyancy platform 3 through the limiter 4 on the counterweight cable 7. The limiter 4 is used to adjust the working water depth of the underwater equipment 2. The counterweight block 8 is connected to the lower end of the counterweight cable 7 to provide a vertical downward pulling force, so that the multi-anchor submerged buoy system is more stably fastened to the buoyancy platform 3, thereby resisting the heave and torsion of the multi-anchor submerged buoy system; and it makes the recovery and re-deployment of the multi-anchor submerged buoy system simple. When recovering, the satellite beacon 1, the underwater equipment 2 and the counterweight block 8 can be hoisted and lifted, and they can be deployed again after maintenance is completed. Under the action of the deadweight of the counterweight block 8, the limiter 4 is fastened to the lower part of the buoyancy platform 3, and the underwater equipment 2 reaches the predetermined working water depth;

[0030] The stopper 4 is composed of a locking device and a spherical stopper block. The locking device is used to fix the entire stopper 4 on the counterweight cable 7. The relative position of the stopper 4 on the counterweight cable 7 can be adjusted by the locking device. After each adjustment, it needs to be re-locked on the counterweight cable 7. With the change of the relative position of the stopper 4 on the counterweight cable 7, the working water depth of the underwater device 2 is adjusted; the spherical stopper block is adapted to the hemispherical groove body of the buoyancy platform 3, so that it is convenient to install it on the buoyancy platform 3 through the spherical stopper block;

[0031] See also Figure 2 As shown, a plurality of anchor chain connectors are evenly arranged along the vertical axis of the buoyant platform 3, and each anchor chain connector is connected to a group of anchor systems; the anchor system includes an anchor chain 5 and an anchor block 6, one end of the anchor chain 5 is connected to the anchor chain connector of the buoyant platform 3, and the other end of the anchor chain 5 is connected to the anchor block 6, wherein the anchor chain 5 is composed of a metal segment anchor chain and a non-metal segment anchor chain, wherein the length of the non-metal segment anchor chain accounts for a larger proportion of the total length of the anchor chain 5, and the non-metal segment anchor chain can provide a smaller positive buoyancy in the water, and the length of the metal segment anchor chain accounts for a smaller proportion of the total length, and the anchor chain 5 can be in a tensioned state by only providing a smaller positive buoyancy by the buoyant platform 3, thereby providing the buoyant platform 3 with tension to resist external loads;

[0032] The buoyancy platform 3 is composed of two parts: a steel structure and a buoyancy material. The steel structure is a rigid frame structure. The buoyancy material is evenly arranged on the upper part of the steel structure. The buoyancy material is a material composited with a high-strength polymer and hollow glass microspheres. The middle part of the buoyancy platform 3 is designed as a funnel-shaped trough body, and the lower part of the funnel-shaped trough body is designed as a hemispherical trough body. The funnel-shaped trough body of the buoyancy platform 3 is used to guide and fix the limiter 4 into the hemispherical trough body. The hemispherical trough body of the buoyancy platform 3 is used to place the limiter 4 and fix it on the buoyancy platform 3, so the buoyancy platform 3 has the function of facilitating the installation and disassembly of the limiter 4.

[0033] A method for deploying and recovering a tensioned multi-anchor submerged buoy system with adjustable working water depth comprises the following steps:

[0034] Step 1: Survey the topography of the deployment site, mainly the water depth, seabed geology and marine environmental conditions of the deployment area; the marine environmental conditions mainly include wind, waves, currents and other related parameters

[0035] Step 2: Select the anchor placement location based on the topographic survey results;

[0036] Step 3: separately deploy anchor blocks 6 to predetermined positions, and fasten anchor blocks 6 to anchor chain connectors of buoyant platform 3 through anchor chains 5, and then connect counterweight blocks 8 to buoyant platform 3 through stoppers 4 of counterweight cables 7. Due to the geometric angles set between anchor chains 5 and the tension of anchor chains 5, buoyant platform reaches predetermined water depth. Under the tension of multiple anchor chains 5, buoyant platform 3 reaches predetermined water depth.

[0037] Step 5: Deploy the underwater equipment 2 and satellite beacon 1 of the buoy system in sequence, and the deployment of the entire system is completed;

[0038] Step 6: To recover the system, you only need to find the satellite beacon 1 and hoist the underwater equipment 2 onto the ship. After maintenance is completed, adjust the relative position of the limiter 4 on the counterweight cable 7, then lock the limiter 4, deploy the underwater equipment 2 to the new working water depth, and repeat this process. This will make the working water depth of the underwater equipment 2 adjustable, and also realize the system's multiple deployment and recovery, and the construction is simple.

[0039] Working principle of the present invention: The system of the present invention includes a satellite beacon 1, an underwater device 2, a buoyant platform 3, a counterweight 8 and a stopper 4. Multiple groups of anchor systems are evenly arranged along the vertical axis direction at the bottom of the buoyant platform 3. Each group of anchor systems includes an anchor chain 5 and an anchor block 6, which are all connected to the anchor chain connector at the bottom of the buoyant platform 3. The satellite beacon 1 is connected to the underwater device 2 through a cable, and the underwater device 2 is connected to the counterweight 8 through a counterweight cable 7. The counterweight 8 is tied to the buoyant platform 3 through the stopper 4 on the counterweight cable 7. The stopper 4 is used to adjust the working water depth of the underwater device 2. When laying, the anchor block 6 is laid separately to the predetermined position, and the anchor chain 5 is fastened to the anchor chain connector of the buoyant platform 3. The counterweight 8 passes through the buoyant platform 3. The buoyant platform 3 reaches the predetermined water depth under the pulling force of several anchor chains 5. Finally, other components of the system are laid, and the stopper 4 is fastened to the buoyant platform 3 under the action of the gravity of the counterweight 8, and the laying is completed. When recovering, only the satellite beacon 1, underwater equipment 2 and counterweight 8 need to be hoisted, and after the inspection is completed, they are slowly deployed to the original water depth position by winch or the relative position of the stopper 4 on the counterweight cable 7 is adjusted to make the underwater equipment 2 deployed to the new working water depth. The present invention realizes that the working water depth of large underwater equipment 2 is adjustable, the posture of the whole system is stable, the displacement is small under the action of the ocean current, it can effectively resist torsion and heave, adapt to a wide range of water depths, and meet the functional requirements of the precise use of underwater equipment 2. In addition, the deployment and recovery of the whole system only requires one construction ship, the deployment and recovery are simple and reliable, and can be deployed and recovered multiple times. The geometric relationship of the anchor chain line is cleverly used to deploy the buoyancy platform and the underwater equipment 2 to the predetermined water depth, which can greatly save construction costs.

[0040] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. The tensioned multi-anchor submerged buoy system with adjustable working water depth is characterized by: It comprises a buoyancy platform (3), a stopper (4), a counterweight cable (7) and a counterweight block (8), wherein a plurality of anchor chain connectors are evenly arranged along a vertical axis of the buoyancy platform (3), and each anchor chain connector is connected to a group of anchor systems; The top end of the counterweight cable (7) is connected to the underwater device (2), the bottom end of the counterweight cable (7) passes through the buoyancy platform (3) and is connected to the counterweight block (8), and a stopper (4) whose relative position changes is provided on the counterweight cable (7); One end of the anchor chain (5) of the anchor system is connected to the anchor chain connector of the buoyant platform (3), and the other end of the anchor chain (5) is connected to the anchor block (6); The anchor chain (5) is composed of a metal segment anchor chain and a non-metal segment anchor chain, and the length of the non-metal segment anchor chain is greater than the length of the metal segment anchor chain, so that the anchor chain (5) can be in a tensioned state when the buoyancy platform (3) provides positive buoyancy, thereby providing the buoyancy platform (3) with tension to resist external loads; A groove body for guiding and fixing the stopper (4) is provided in the middle of the buoyancy platform (3); The stopper (4) is provided with a locking device, and the locking device is used to adjust the relative position of the stopper (4) on the counterweight cable (7); The limiter (4) is also provided with a limit block, and the limit block is matched with the groove body of the buoyancy platform (3).

2. The tensioned multi-anchor submerged buoy system with adjustable working water depth according to claim 1 is characterized in that: The underwater device (2) is located directly below the satellite beacon (1) and is connected to the satellite beacon (1) via a cable.

3. The method for deploying and recovering a tensioned multi-anchor submerged buoy system with adjustable working water depth according to claim 2, characterized in that: The following steps are involved: Step 1: The anchor blocks (6) are deployed separately to the predetermined positions, and the anchor blocks (6) are fastened to the anchor chain connector of the buoyant platform (3) through the anchor chain (5), and then the counterweight block (8) is connected to the buoyant platform (3) through the stopper (4) of the counterweight cable (7), and then the buoyant platform (3) reaches the predetermined water depth under the pulling force of the plurality of anchor chains (5); Step 2: The buoyancy platform (3), underwater equipment (2) and satellite beacon (1) of the submersible buoy system are deployed in sequence, and the deployment of the entire system is completed.

4. The method for deploying and recovering a tensioned multi-anchor submerged buoy system with adjustable working water depth according to claim 3, characterized in that: Before step 1, first survey the topography of the deployment point, and then select the anchor block deployment location based on the topographic survey results.

5. The method for deploying and recovering a tensioned multi-anchor submerged buoy system with adjustable working water depth according to claim 4, characterized in that: In step 2, the relative position of the stopper (4) on the counterweight cable (7) is adjusted, and then the stopper (4) is locked, the underwater equipment (2) is deployed to a new working water depth, and the working water depth of the underwater equipment (2) is adjusted.

Images