A bottom-supported offshore installation release system and method of releasing the same

Abstract

A bottom sitting ocean equipment release system, the release system comprises: a main float ball, a data acquisition unit float ball is connected below the main float ball by two equal length first bearing cables, the data acquisition unit float ball is used to collect and store transmission seabed observation data;Acoustic release, the top of the acoustic release is connected with the data acquisition unit float ball by the second bearing cable, the release action of the acoustic release is controlled by the acoustic signal issued by the deck acoustic unit, the acoustic release cooperates with the deck acoustic unit to throw the sea bed base after the completion of the collection operation;Seabed sensor float ball, the seabed sensor float ball is electrically connected with the data acquisition unit float ball by the communication cable, so as to realize the collection control and data transmission between the data acquisition unit float ball and the seabed sensor float ball;Sea bed base, a plurality of sea bed base cable rings are uniformly distributed on the top of the sea bed base, and a holding body is arranged on the seabed sensor float ball.

Description

Technical field:

[0001] The invention relates to a bottom-mounted marine equipment releasing system and a releasing method thereof. Background technology:

[0002] The ocean has become an important fulcrum for economic development due to its rich biological, mineral and other resources, and is an important way to solve population expansion, resource shortages and environmental deterioration; the ocean has become an important factor affecting global climate, carbon cycle, etc. due to its huge water area and water storage capacity, and is an important object for studying the human living environment; the ocean has become the main direction for human exploration of the unknown world due to its complexity and uniqueness, and is an important stage for scientific and technological innovation; the ocean has become an important national defense barrier due to its permeability and natural geographical pattern, and is highly valued by countries around the world. Therefore, regular observations of the ocean are needed to feedback corresponding information data.

[0003] Ocean observation is the use of various modern technologies and sensors to monitor the marine environment and perceive information. Bottom-mounted marine equipment is the basis for marine development, scientific research and comprehensive management. It is a component and tool frequently used in the field of marine observation technology, mainly including seafloor seismometers, seafloor geomagnetic diurnal variation equipment, seafloor current meters, seafloor hydrological observation equipment and seafloor acoustic monitoring equipment.

[0004] However, most of the existing ocean observation equipment adopts non-bottom-mounted observation methods. During the ocean observation process, the ocean sensors are suspended in the ocean water and cannot directly collect observation data from the seabed. They are easily affected by ocean currents, and their posture and position are difficult to maintain stable, resulting in large errors in the collected observation data. There is no distance interval between the sensors of the existing bottom-mounted ocean equipment and the various observation equipment components, which will cause electromagnetic interference to the sensors of the bottom-mounted ocean equipment when collecting observation data, affecting the efficiency of ocean observation. At the same time, most of the existing bottom-mounted equipment uses its own releaser instead of the traditional commercial acoustic releaser. On the one hand, the release and recovery risk of the self-mounted releaser is greater. On the other hand, the self-mounted releaser will increase the weight of the bottom-mounted equipment and has higher technical requirements. Compared with the traditional commercial acoustic releaser, the technology is mature and has the advantage of a high recovery success rate. Summary of the invention:

[0005] An embodiment of the present invention provides a bottom-mounted marine equipment release system and a release method thereof. The structure and method are reasonably designed. Based on the mutual cooperation of multiple functional components in the system, the seabed sensor can directly collect observation data of the seabed, avoiding the influence of ocean currents. Its posture and position remain relatively stable on the seabed, ensuring that the collected seabed observation data is stable and reliable. At the same time, it can also eliminate the electromagnetic interference caused by the electromagnetic devices in the system to the seabed sensor, reduce technical requirements, improve ocean observation efficiency and recovery success rate, and solve the problems existing in the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A bottom-mounted marine equipment release system, the release system comprising:

[0008] A main buoy is connected to a data acquisition unit buoy below the main buoy via two first load-bearing cables of equal length. The data acquisition unit buoy is used to collect, transmit and store seabed observation data.

[0009] An acoustic releaser, the top of which is connected to the data acquisition unit buoy via a second load-bearing cable. The release action of the acoustic releaser is controlled by an acoustic signal emitted from the deck acoustic unit. The acoustic releaser cooperates with the deck acoustic unit to jettison the seabed base after the acquisition operation is completed.

[0010] A seabed sensor buoy, the seabed sensor buoy is electrically connected to the data acquisition unit buoy via a communication cable to achieve acquisition control and data transmission between the data acquisition unit buoy and the seabed sensor buoy. The seabed sensor buoy is connected to the data acquisition unit buoy via two third load-bearing cables of equal length. The seabed sensor buoy is connected to the bottom of the acoustic releaser via a release cable.

[0011] The seabed base has a plurality of seabed base cable rings evenly distributed on the top of the seabed base, a retaining body is provided on the seabed sensor buoy, and a plurality of retaining body cable rings matching the seabed base cable rings are evenly distributed on the retaining body, and each retaining body cable ring is respectively provided with a corresponding cable retaining hole to enable the release cable to connect the seabed base, the seabed sensor buoy and the acoustic releaser.

[0012] The main buoy, the data acquisition unit buoy, the acoustic releaser, the seabed sensor buoy and the seabed base are arranged in sequence from top to bottom.

[0013] The seabed base is connected to the seabed sensor buoy through eight equal-length release cables and a retaining body, and the seabed sensor buoy is connected to the release hook of the acoustic releaser through eight equal-length release cables, and the release cables are all closed-loop knotted ropes.

[0014] The seabed base cable ring, the retaining body cable ring and the cable retaining hole are all distributed in a circular pattern.

[0015] Eight cable-collecting longitudinal rods evenly distributed on the circumference are fixed to the top of the seabed sensor float, and a cable-collecting ring is fixed to the cable-collecting longitudinal rods. The cable-collecting ring is a circular ring structure. The circumferential size of the cable-collecting longitudinal rods and the size of the cable-collecting ring are much smaller than the outer circumferential size of the cable retaining hole.

[0016] The length of the third bearing cable is greater than the sum of the lengths of the second bearing cable and the acoustic releaser, and the length of the communication cable is greater than the length of the third bearing cable.

[0017] A method for releasing a bottom-mounted marine device, comprising the following steps:

[0018] S1, connect the main buoy, data acquisition unit buoy, acoustic releaser, seabed sensor buoy and seabed base in sequence from top to bottom;

[0019] S2: The observation system is hoisted into the sea surface. After the observation system sinks to the seabed, the seabed base rests on the seabed. Under the positive buoyancy of the main buoy, the data acquisition unit buoy, and the seabed sensor buoy, and the negative buoyancy of the seabed base, the main buoy, the data acquisition unit buoy, the acoustic releaser, and the seabed sensor buoy of the observation system are stably suspended above the seabed in sequence.

[0020] S3, the data acquisition unit float sends a control command to the seabed sensor float via the communication cable, and the seabed sensor float collects seabed observation data. After the collection is completed, the seabed sensor float feeds the collected seabed observation data back to the data acquisition unit float via the communication cable and stores it;

[0021] S4: The deck acoustic unit sends a release command to the acoustic releaser, and the release hook is actuated to separate the release cable from the release hook. The main buoy, data acquisition unit buoy, acoustic releaser, and seabed sensor buoy float upward, while the retaining body, release cable, and seabed base remain on the seabed.

[0022] In S5, the main buoy, data acquisition unit buoy, acoustic releaser and seabed sensor buoy that have floated to the sea surface are recovered, and the deck acoustic unit establishes a connection with the acoustic releaser through acoustic communication to track the floating position of the observation system in real time.

[0023] The present invention adopts the above-mentioned structure, and cooperates with the data acquisition unit buoy and the seabed sensor buoy to collect and transmit seabed observation data and store it; cooperates with the acoustic releaser and the deck acoustic unit to drop the seabed base after the collection operation is completed; the seabed base cable ring on the top of the seabed base, the retaining body cable ring on the retaining body and the cable retaining hole are used to connect the seabed base, the seabed sensor buoy and the acoustic releaser with the release cable; the multiple cable-receiving longitudinal rods and cable-receiving rings fixed to the top of the seabed sensor buoy are used to firmly connect the seabed base, the retaining body and the seabed sensor buoy together, and the retaining body is tightly attached to the bottom of the cable retaining hole, so that the release cable will not detach from the cable retaining hole, thereby improving the integrity of the observation system, and having the advantages of stability, practicality, precision and efficiency. Description of the drawings:

[0024] Figure 1 It is a schematic diagram of the underwater working structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the observation system of the present invention after release.

[0026] Figure 3 This is a schematic diagram of the structure of the observation system of the present invention floating to the water surface.

[0027] Figure 4 This is a schematic diagram of the connection structure between the seabed base and the seabed sensor float of the present invention.

[0028] Figure 5 Schematic diagram of the connection structure of a single release cable of the present invention.

[0029] Figure 6 Schematic diagram of the structure of the retaining body of the present invention.

[0030] In the figure, 1. main buoy, 2. first bearing cable, 3. data acquisition unit buoy, 4. second bearing cable, 5. acoustic releaser, 5-1. release hook, 6. third bearing cable, 7. release cable, 8. seabed sensor buoy, 8-1. cable reeling rod, 8-2. cable reeling ring, 8-3. cable retaining hole, 9. seabed base, 9-1. seabed base cable ring, 10. retaining body, 10-1. retaining body cable ring, 11. communication cable; 12. deck acoustic unit. Specific implementation method:

[0031] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0032] like Figure 1-6 As shown in , a bottom-mounted marine equipment release system, the release system includes:

[0033] A main buoy 1 is connected to a data acquisition unit buoy 3 below the main buoy 1 via two first load-bearing cables 2 of equal length. The data acquisition unit buoy 3 is used to collect, transmit and store seabed observation data.

[0034] An acoustic releaser 5, the top of which is connected to the data acquisition unit buoy 3 via a second load-bearing cable 4. The release action of the acoustic releaser 5 is controlled by an acoustic signal emitted from the deck acoustic unit 12. The acoustic releaser 5 cooperates with the deck acoustic unit 12 to jettison the seabed base 9 after the acquisition operation is completed;

[0035] A seabed sensor buoy 8 is electrically connected to the data acquisition unit buoy 3 via a communication cable 11 to implement data acquisition control and data transmission between the data acquisition unit buoy 3 and the seabed sensor buoy 8. The seabed sensor buoy 8 is connected to the data acquisition unit buoy 3 via two third load-bearing cables 6 of equal length. The seabed sensor buoy 8 is connected to the bottom of the acoustic releaser 5 via a release cable 7.

[0036] A seabed base 9 is provided with a plurality of seabed base cable rings 9-1 evenly distributed on the top of the seabed base 9, a retaining body 10 is provided on the seabed sensor buoy 8, and a plurality of retaining body cable rings 10-1 are evenly distributed on the retaining body 10 and matched with the seabed base cable ring 9-1, and each retaining body cable ring 10-1 is respectively provided with a corresponding cable retaining hole 8-3, so that the release cable 7 connects the seabed base 9, the seabed sensor buoy 8 and the acoustic releaser 5.

[0037] The main buoy 1, the data acquisition unit buoy 3, the acoustic releaser 5, the seabed sensor buoy 8 and the seabed base 9 are arranged in sequence from top to bottom.

[0038] The seabed base 9 is connected to the seabed sensor buoy 8 through eight equal-length release cables 7 and a retaining body 10. The seabed sensor buoy 8 is connected to the release hook 5-1 of the acoustic releaser 5 through eight equal-length release cables 7. The release cables 7 are all closed-loop knotted ropes.

[0039] The seabed base cable ring 9-1, the retaining body cable ring 10-1 and the cable retaining hole 8-3 are all distributed in a circular pattern.

[0040] Eight cable-collecting longitudinal rods 8-1 evenly distributed on the circumference are fixed to the top of the seabed sensor float 8, and a cable-collecting ring 8-2 is fixed to the cable-collecting longitudinal rods 8-1. The cable-collecting ring 8-2 is a circular ring structure. The circumferential size of the cable-collecting longitudinal rods 8-1 and the size of the cable-collecting ring 8-2 are much smaller than the outer circumferential size of the cable retaining hole 8-3.

[0041] The length of the third bearing cable 6 is greater than the sum of the lengths of the second bearing cable 4 and the acoustic releaser 5 , and the length of the communication cable 11 is greater than the length of the third bearing cable 6 .

[0042] A method for releasing a bottom-mounted marine device, comprising the following steps:

[0043] S1, connect the main float 1, data acquisition unit float 3, acoustic releaser 5, seabed sensor float 8 and seabed base 9 in order from top to bottom;

[0044] S2: The observation system is hoisted into the sea surface. After the observation system sinks to the seabed, the seabed base 9 rests on the seabed. Under the positive buoyancy of the main buoy 1, the data acquisition unit buoy 3, and the seabed sensor buoy 8, and the negative buoyancy of the seabed base 9, the main buoy 1, the data acquisition unit buoy 3, the acoustic releaser 5, and the seabed sensor buoy 8 of the observation system are stably suspended above the seabed in sequence.

[0045] S3, the data acquisition unit float 3 sends a control command to the seabed sensor float 8 via the communication cable 11, and the seabed sensor float 8 collects seabed observation data. After the collection is completed, the seabed sensor float 8 feeds the collected seabed observation data back to the data acquisition unit float 3 via the communication cable 11 and stores it;

[0046] S4: The deck acoustic unit 12 sends a release command to the acoustic releaser 5, causing the release hook 5-1 to actuate, disengaging the release cable 7 from the release hook 5-1. The main buoy 1, data acquisition unit buoy 3, acoustic releaser 5, and seabed sensor buoy 8 float upward, while the retaining body 10, release cable 7, and seabed base 9 remain on the seabed.

[0047] S5, the main buoy 1, data acquisition unit buoy 3, acoustic releaser 5 and seabed sensor buoy 8 that float to the sea surface are recovered, and the deck acoustic unit 12 establishes a connection with the acoustic releaser 5 through acoustic communication to track the floating position of the observation system in real time.

[0048] The working principle of a bottom-mounted marine equipment release system and its release method in an embodiment of the present invention is: based on the mutual cooperation of multiple functional components within the system, the seabed sensor can directly collect observation data of the seabed, avoiding the influence of ocean currents, and its posture and position remain relatively stable on the seabed, ensuring that the collected seabed observation data is stable and reliable. At the same time, it can also eliminate the electromagnetic interference generated by the electromagnetic devices in the system to the seabed sensor, thereby improving the efficiency of marine observation. Compared with the observation equipment in the existing technology, it is more accurate and efficient, and is convenient for promotion and popularization.

[0049] In the overall scheme, the observation system mainly includes a main buoy 1, under which a data acquisition unit buoy 3 is connected through two equal-length first bearing cables 2, and the data acquisition unit buoy 3 is used to collect and transmit seabed observation data and store it; an acoustic releaser 5, the top of which is connected to the data acquisition unit buoy 3 through a second bearing cable 4, and the release action of the acoustic releaser 5 is controlled by an acoustic signal from a deck acoustic unit 12, and the acoustic releaser 5 cooperates with the deck acoustic unit 12 to jettison the seabed base 9 after the acquisition operation is completed; a seabed sensor buoy 8, which is electrically connected to the data acquisition unit buoy 3 through a communication cable 11 to achieve The data acquisition control and data transmission between the data acquisition unit float 3 and the seabed sensor float 8, the seabed sensor float 8 is connected to the data acquisition unit float 3 through two equal-length third load-bearing cables 6, and the seabed sensor float 8 is connected to the bottom of the acoustic releaser 5 through the release cable 7; the seabed base 9, a plurality of seabed base cable rings 9-1 are evenly distributed on the top of the seabed base 9, a retaining body 10 is provided on the seabed sensor float 8, and a plurality of retaining body cable rings 10-1 that cooperate with the seabed base cable ring 9-1 are evenly distributed on the retaining body 10, and each retaining body cable ring 10-1 is respectively provided with a cable retaining hole 8-3, so that the release cable 7 connects the seabed base 9, the seabed sensor float 8 and the acoustic releaser 5.

[0050] With the mutual cooperation of the above-mentioned different types of functional components, it is possible to stably, reliably and accurately detect the observation data of the seabed, reduce the electromagnetic interference of electromagnetic components on the collected data, ensure the operation of each functional component, and facilitate recycling at the same time, with strong practicality.

[0051] Preferably, the main float 1, the data acquisition unit float 3, the acoustic releaser 5, the seabed sensor float 8 and the seabed base 9 are connected in sequence from top to bottom, so as to facilitate the observation operation of the observation system as a whole; specifically, the main float 1 is connected to the data acquisition unit float 3 through two equal-length first bearing cables 2, the data acquisition unit float 3 is connected to the seabed sensor float 8 through two equal-length third bearing cables 6, the data acquisition unit float 3 is connected to the top of the acoustic releaser 5 through the second bearing cable 4, the seabed base 9 is connected to the seabed sensor float 8 through eight equal-length release cables 7 and the retaining body 10, the seabed sensor float 8 is connected to the release hook 5-1 of the acoustic releaser 5 through eight equal-length release cables 7, thereby assembling and connecting all the functional components into the entire system, so that each functional component can cooperate with each other to perform actions.

[0052] Preferably, the top of the seabed base 9 has seabed base cable rings 9-1 with uniform circumferential distribution; the outer circumference of the retaining body 10 has retaining body cable rings 10-1 with uniform circumferential distribution; the outer circumference of the seabed sensor buoy 8 is designed with cable retaining holes 8-3 with uniform circumferential distribution; the positions of the seabed base cable ring 9-1, the retaining body cable ring 10-1, and the cable retaining hole 8-3 correspond to each other, and the outer circumferential size of the retaining body cable ring 10-1 and the cable retaining hole 8-3 is roughly equal, and the outer circumferential size of the seabed base cable ring 9-1 is smaller than the outer circumferential size of the retaining body cable ring 10-1 and the cable retaining hole 8-3; the seabed base 9, the seabed sensor buoy 8 and the acoustic releaser 5 are connected in sequence.

[0053] Preferably, the data acquisition unit float 3 controls the seabed sensor float 8 to collect seabed observation data through the communication cable 11, and the seabed sensor float 8 transmits the collected data to the data acquisition unit float 3 through the communication cable 11 and stores it.

[0054] The bottom of the release cable 7 is connected to the seabed base cable ring 9-1, and thus connected to the seabed base 9; it is connected to the retaining body cable ring 10-1 upward, passes through the cable retaining hole 8-3, the cable-retracting longitudinal rod 8-1, and the cable-retracting ring 8-2, and is connected to the release hook 5-1 of the releaser at the top; since the outer circumferential size of the seabed base cable ring 9-1 is smaller than the outer circumferential size of the retaining body cable ring 10-1 and the cable retaining hole 8-3, the circumferential size of the cable-retracting longitudinal rod 8-1 and the cable-retracting ring 8-2 are much smaller than the outer circumferential size of the cable retaining hole 8-3, this connection structure enables the release cable 7 to firmly connect the seabed base 9, the retaining body 10, and the seabed sensor buoy 8 together, and the retaining body 10 is tightly attached to the cable retaining hole. The eight release cables 7 are detached from the release hook 5-1 of the releaser, and automatically detached from the cable-receiving ring 8-2, the cable-receiving longitudinal rod 8-1, and the cable-receiving holding hole 8-3 in turn. The main float 1, the data acquisition unit float 3, the acoustic releaser 5, the seabed sensor float 8 are continuously floated and held, and the release cable 7, the seabed base 9, etc. are detached and floated to the sea surface.

[0055] After the seabed observation data collection is completed, the deck acoustic unit 12 sends a release command to the acoustic releaser 5, and the release hook 5-1 of the releaser is actuated; the release cable 7 is detached from the release hook 5-1, and the main buoy 1, the data acquisition unit buoy 3, the acoustic releaser 5, and the seabed sensor buoy 8 float up, while the retaining body 10, the release cable 7, and the seabed base 9 remain on the seabed; the main buoy 1, the data acquisition unit buoy 3, the acoustic releaser 5, and the seabed sensor buoy 8 float to the sea surface and are recovered. During this process, the deck acoustic unit 12 keeps tracking the floating position of the acoustic releaser 5 and the observation system through acoustic communication.

[0056] A method for releasing a bottom-seated marine device mainly includes the following steps: connecting the main buoy 1, the data acquisition unit buoy 3, the acoustic releaser 5, the seabed sensor buoy 8 and the seabed base 9 in sequence from top to bottom; hoisting the observation system into the sea surface, and after the observation system sinks to the seabed, the seabed base 9 is seated on the seabed, and under the positive buoyancy of the main buoy 1, the data acquisition unit buoy 3, and the seabed sensor buoy 8 and the negative buoyancy of the seabed base 9, the main buoy 1, the data acquisition unit buoy 3, the acoustic releaser 5, and the seabed sensor buoy 8 of the observation system are stably suspended above the seabed in sequence; the data acquisition unit buoy 3 sends a control instruction to the seabed sensor buoy 8 through the communication cable 11, and the seabed sensor buoy 8 collects seabed observation data. After the data is collected, the seabed sensor buoy 8 transmits the collected seabed observation data to the data collection unit buoy 3 through the communication cable 11 and stores it; the deck acoustic unit 12 sends a release command to the acoustic releaser 5, and the release hook 5-1 is actuated to separate the release cable 7 from the release hook 5-1, and the main buoy 1, the data collection unit buoy 3, the acoustic releaser 5, and the seabed sensor buoy 8 float up, while the retaining body 10, the release cable 7, and the seabed base 9 remain on the seabed; the main buoy 1, the data collection unit buoy 3, the acoustic releaser 5, and the seabed sensor buoy 8 that float to the sea surface are recovered, and the deck acoustic unit 12 establishes a connection with the acoustic releaser 5 through acoustic communication to track the floating position of the observation system in real time.

[0057] By following the above steps in sequence, seabed observation data can be collected accurately and efficiently, and electromagnetic interference can be eliminated, further improving accuracy and collection efficiency.

[0058] To sum up, a bottom-mounted marine equipment release system and its release method in an embodiment of the present invention are based on the mutual cooperation of multiple functional components within the system, so that the seabed sensor can directly collect observation data of the seabed, avoiding the influence of ocean currents, and its posture and position remain relatively stable on the seabed, ensuring that the collected seabed observation data is stable and reliable. At the same time, it can also eliminate the electromagnetic interference generated by the electromagnetic devices in the system to the seabed sensor, thereby improving the efficiency of ocean observation. Compared with the observation equipment in the prior art, it is more accurate and efficient, and is convenient for promotion and popularization.

[0059] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any replacement, improvement or transformation made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0060] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. A bottom-mounted marine equipment release system, characterized in that: The release system comprises: A main buoy is connected to a data acquisition unit buoy below the main buoy via two first load-bearing cables of equal length. The data acquisition unit buoy is used to collect, transmit and store seabed observation data. An acoustic releaser, the top of which is connected to the data acquisition unit buoy via a second load-bearing cable. The release action of the acoustic releaser is controlled by an acoustic signal emitted from the deck acoustic unit. The acoustic releaser cooperates with the deck acoustic unit to jettison the seabed base after the acquisition operation is completed. A seabed sensor buoy, the seabed sensor buoy is electrically connected to the data acquisition unit buoy via a communication cable to achieve acquisition control and data transmission between the data acquisition unit buoy and the seabed sensor buoy. The seabed sensor buoy is connected to the data acquisition unit buoy via two third load-bearing cables of equal length. The seabed sensor buoy is connected to the bottom of the acoustic releaser via a release cable. The seabed base has a plurality of seabed base cable rings evenly distributed on the top of the seabed base. A retaining body is provided on the seabed sensor buoy. The retaining body has a plurality of retaining body cable rings evenly distributed on the retaining body, which match the seabed base cable rings. Each retaining body cable ring is provided with a corresponding cable retaining hole, so that the release cable connects the seabed base, the seabed sensor buoy and the acoustic releaser; The seabed base is connected to the seabed sensor buoy through eight equal-length release cables and a retaining body, and the seabed sensor buoy is connected to the release hook of the acoustic releaser through eight equal-length release cables, and the release cables are all closed-loop knotted ropes; Eight cable-collecting rods evenly distributed on the circumference are fixed to the top of the submarine sensor float. Cable-collecting rings are fixed to the cable-collecting rods. The cable-collecting rings are circular ring structures. The circumference of the cable-collecting rods and the cable-collecting rings are much smaller than the outer circumference of the cable-retaining hole. The length of the third load-bearing cable is greater than the sum of the lengths of the second load-bearing cable and the acoustic releaser, and the length of the communication cable is greater than the length of the third load-bearing cable; The main buoy, the data acquisition unit buoy, the acoustic releaser, the seabed sensor buoy and the seabed base are arranged in sequence from top to bottom; The seabed base cable ring, the retaining body cable ring and the cable retaining hole are all distributed in a circumference.

2. A method for releasing bottom-mounted marine equipment, characterized in that: When applied to the bottom-mounted marine equipment release system according to claim 1, the release method comprises the following steps: S1, connect the main buoy, data acquisition unit buoy, acoustic releaser, seabed sensor buoy and seabed base in sequence from top to bottom; S2: The observation system is hoisted into the sea surface. After the observation system sinks to the seabed, the seabed base rests on the seabed. Under the positive buoyancy of the main buoy, the data acquisition unit buoy, and the seabed sensor buoy, and the negative buoyancy of the seabed base, the main buoy, the data acquisition unit buoy, the acoustic releaser, and the seabed sensor buoy of the observation system are stably suspended above the seabed in sequence. S3, the data acquisition unit float sends a control command to the seabed sensor float via the communication cable, and the seabed sensor float collects seabed observation data. After the collection is completed, the seabed sensor float feeds the collected seabed observation data back to the data acquisition unit float via the communication cable and stores it; S4: The deck acoustic unit sends a release command to the acoustic releaser, and the release hook is actuated to separate the release cable from the release hook. The main buoy, data acquisition unit buoy, acoustic releaser, and seabed sensor buoy float upward, while the retaining body, release cable, and seabed base remain on the seabed. S5, recovering the main buoy, data acquisition unit buoy, acoustic releaser, and seabed sensor buoy that have surfaced to the sea surface, and establishing a connection between the deck acoustic unit and the acoustic releaser through acoustic communication to track the surfaced position of the observation system in real time; After the seabed observation data collection is completed, the deck acoustic unit sends a release command to the acoustic releaser, and the releaser releases the hook; The release cable is separated from the release hook of the releaser, and the main buoy, data acquisition unit buoy, acoustic releaser and seabed sensor buoy float up, while the retaining body, release cable and seabed base remain on the seabed; the main buoy, data acquisition unit buoy, acoustic releaser and seabed sensor buoy float to the sea surface and are recovered. During this process, the deck acoustic unit keeps tracking the floating position of the acoustic releaser and observation system through acoustic communication.

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