A load throw-off system for underwater equipment

Abstract

The application discloses a kind of underwater equipment's unloading system, including acoustic release, electrochemical unloading device, unloading execution mechanism and tensioner.Acoustic release receives acoustic instruction and executes unloading, electrochemical unloading device executes unloading by electrochemical corrosion fuse in seawater;Two are connected unloading block in series through unloading rope, and tensioner is responsible for tightening rope before unloading.In the system, acoustic release and electrochemical unloading device constitute parallel redundancy structure, and any device triggers unloading, which can make rope slack to release unloading block.The significant advantage is that it solves the uncertainty of traditional acoustic release affected by environment and the defects of electromagnetic unloading device, can emergency unloading when acoustic release fails, timely recovery after work is completed, electrochemical unloading device can also realize timing, event and emergency unloading, improve the safety, practicality and reliability of underwater equipment, and wide application range.

Description

Technical Field

[0001] This invention relates to underwater equipment, and more particularly to a jettisoning system for underwater equipment. Background Technology

[0002] Commonly used underwater platforms typically come in two forms: cabled and uncabled. Cabled deep-sea platforms, such as the Rosette, are lowered and retrieved using ship-mounted cables; uncabled platforms, on the other hand, usually do not have external cables and instead adjust their own weight and buoyancy to lower and surface.

[0003] A deep-sea lander is a cableless deep-sea platform widely used in marine environmental monitoring, resource acquisition, and other fields, possessing advantages such as flexibility, cost-effectiveness, and safety and reliability. Traditional landers typically use acoustic release devices as ballast jettisoning mechanisms, but acoustic signals are easily affected by environmental factors during propagation, such as obstruction and noise, resulting in uncertainty. Connecting multiple acoustic release devices in series can improve reliability, but at a correspondingly higher cost. To ensure the safe recovery of the lander, two different operating modes of ballast jettisoning devices are required. Currently available electromagnetic jettisoning devices use electromagnetic coils to generate a magnetic field to suspend the ballast weight on the underwater platform, releasing it upon power failure. However, these devices are large, expensive, and consume significant static power during long-term operation.

[0004] It should be noted that the information disclosed in the background section above is only for understanding the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The main objective of this invention is to overcome the deficiencies in the above-mentioned background technology and provide a jettisoning system for underwater equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An underwater equipment jettisoning system, comprising:

[0008] Acoustic release device, installed on underwater equipment, is used to receive acoustic commands to perform ballast jettisoning;

[0009] An electrochemical ballast release device, installed on underwater equipment, is used to release ballast by melting through electrochemical corrosion in seawater.

[0010] The ballast release mechanism includes a ballast release rope and a ballast release block connected together; the acoustic release device and the electrochemical ballast release device are connected in series via the ballast release rope and are jointly connected to the ballast release block;

[0011] A tensioner, which is connected to the throwing rope, is used to tighten the throwing rope before throwing.

[0012] The acoustic release device and the electrochemical throwing device form a parallel redundant structure. When either device triggers the throwing action, the throwing rope will loosen and the throwing block will be released.

[0013] Furthermore, the electrochemical loading device includes a watertight cable, electrodes, and a fusible structure made of a conductive material that can undergo electrochemical corrosion.

[0014] The electrode and the fusible link are respectively connected to the power source via a watertight cable. The fusible link has an exposed fusible link and is connected to a throwing rope.

[0015] When energized, current flows from the watertight cable to the electrode and the fusion structure. The two form a conductive circuit through seawater, causing electrochemical corrosion and melting at the fusion point, which in turn loosens the throwing rope and releases the throwing block.

[0016] Furthermore, the fusion structure is a stainless steel wire with an anti-corrosion layer, and the fusion point is formed by partially removing the anti-corrosion layer. The watertight cable includes a first watertight cable, which is vulcanized to lead out two cable wires, one of which is connected to the electrode vulcanization and the other is directly connected to one end of the stainless steel wire.

[0017] Furthermore, the fusion structure is a steel wire rope with an anti-corrosion layer, and the fusion point is formed by partially removing the anti-corrosion layer; the watertight cable includes a first watertight cable and a second watertight cable, the first watertight cable is vulcanized to lead out two cable lines, one of which is connected to the electrode by vulcanization, and the other of which leads out a watertight connector and is connected to the second watertight cable, and the steel wire rope is fixed to the second watertight cable by vulcanization at both ends.

[0018] Furthermore, the fusion structure is constructed in a ring shape and is connected to the tensioner and the underwater equipment body respectively via two insulating connectors.

[0019] Furthermore, the electrode is made of brass, stainless steel, or titanium alloy.

[0020] Furthermore, the electrochemical loading device is configured to be energized in response to a timing signal, an external control signal, or a system anomaly monitoring signal.

[0021] Furthermore, the acoustic release device is installed on the top of the underwater equipment, and the electrochemical ballast disposal device is installed in the middle layer of the underwater equipment.

[0022] Furthermore, the load ejection actuator also includes a load ejection block release hook and a release hook seat;

[0023] The release hook seat is fixed to the support column of the underwater equipment, and the release hook of the ballast block is installed on the release hook seat through a lever structure. Thus, when the ballast rope is tensioned, the tension on the ballast rope is less than the weight of the ballast block through the lever action.

[0024] Furthermore, the jettisoning actuator is provided in multiple sets and distributed on multiple support columns of the underwater equipment.

[0025] The present invention has the following beneficial effects:

[0026] This invention provides a ballast jettisoning system for underwater equipment, enabling emergency ballast jettisoning and surfacing of underwater equipment (such as deep-sea landers) in the event of acoustic release failure, or timely recovery of underwater equipment after its mission is completed. The main technical advantage of this invention lies in its parallel redundant design of the acoustic release device and the electrochemical jettisoning device, significantly improving the reliability of underwater equipment jettisoning: when the acoustic release device fails due to environmental interference, the electrochemical device can automatically trigger a fuse based on a timed command, system signal, or abnormal monitoring, achieving emergency ballast jettisoning and surfacing; simultaneously, the use of an electrochemical fuse mechanism (electrodes and a fuse structure forming a circuit through seawater electrolysis) replaces the traditional electromagnetic device, eliminating static power consumption and significantly reducing size and cost, overcoming the shortcomings of existing electromagnetic jettisoning devices, such as large size, high cost, and high static power consumption. This system is adaptable to all underwater equipment that relies on weight-buoyancy regulation, combining deployment flexibility, operational economy, and recovery safety, fundamentally solving the risk of stranding caused by single-point failures on untethered platforms such as deep-sea landers.

[0027] Other beneficial effects of the embodiments of the present invention will be further described below. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a multi-stage safe jettisoning system for underwater equipment according to an embodiment of the present invention.

[0029] Figure 2 This is a front view of the jettisoning system of the underwater equipment according to an embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the design principle of an electrochemical loading device according to an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the design principle of an electrochemical loading device according to another embodiment of the present invention.

[0032] Reference numerals: 1 Acoustic release device, 2 Throwing rope, 3 Throwing block release hook, 4 Throwing block release hook seat, 5 Throwing block, 6 Tensioner, 7 Electrochemical throwing device, 7-1 First watertight cable, 7-2 Electrode, 7-3 Fusion point, 7-4 Insulating connector, 7-5 Stainless steel wire, 7-6 Second watertight cable, 7-7 Steel wire rope. Detailed Implementation

[0033] The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0034] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for fixing, coupling, or communication.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention 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. Therefore, they should not be construed as limitations on the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] See Figures 1 to 4 This invention provides a ballast jettisoning system for underwater equipment, including an acoustic release device 1, an electrochemical jettisoning device 7, a jettisoning actuator, and a tensioner 6. The acoustic release device 1 is installed on the underwater equipment, such as a deep-sea lander, to receive acoustic commands and execute jettisoning. The electrochemical jettisoning device 7 is installed on the underwater equipment and executes jettisoning by melting through electrochemical corrosion in seawater. The jettisoning actuator includes a connected jettisoning rope 2 and a jettisoning block 5. The acoustic release device 1 and the electrochemical jettisoning device 7 are connected in series via the jettisoning rope 2 and are jointly connected to the jettisoning block 5. The tensioner 6 is connected to the jettisoning rope 2 and is used to tighten the jettisoning rope 2 before jettisoning. The acoustic release device 1 and the electrochemical jettisoning device 7 form a parallel redundant structure; triggering the jettisoning action by either device causes the jettisoning rope 2 to loosen and release the jettisoning block 5.

[0038] See Figures 3 to 4In some embodiments, the electrochemical throwing device 7 includes a watertight cable, an electrode 7-2, and a fusion structure made of a conductive material capable of electrochemical corrosion. The electrode 7-2 and the fusion structure are respectively connected to a power source via the watertight cable. The fusion structure has an exposed fusion point 7-3, which is connected to the throwing rope 2. When energized, current flows from the watertight cable to the electrode and the fusion structure, and the two form a conductive circuit through seawater, causing the fusion point to undergo electrochemical corrosion and melt, thereby relieving the throwing rope 2 and releasing the throwing block 5.

[0039] See Figure 3 In some embodiments, the fusion structure is a stainless steel wire 7-5 with an anti-corrosion layer, and the fusion point 7-3 is formed by partially removing the anti-corrosion layer. The watertight cable includes a first watertight cable 7-1, which is vulcanized to lead out two cable wires, one of which is connected to the electrode vulcanization and the other is directly connected to one end of the stainless steel wire 7-5.

[0040] See Figure 4 In some embodiments, the fusion structure is a steel wire rope 7-7 with an anti-corrosion layer, and the fusion point 7-3 is formed by partially removing the anti-corrosion layer; the watertight cable includes a first watertight cable 7-1 and a second watertight cable 7-6. The first watertight cable is vulcanized to lead out two cable lines, one of which is connected to the electrode by vulcanization, and the other is led out to a watertight connector and connected to the second watertight cable. The steel wire rope 7-7 is fixed to the second watertight cable at both ends by vulcanization.

[0041] See Figures 1 to 4 In some embodiments, the fusion structure is configured as a ring and connected to the tensioner 6 and the underwater equipment body via two insulating connectors 7-4, respectively.

[0042] In some embodiments, the electrode 7-2 is made of brass, stainless steel, or titanium alloy.

[0043] In some embodiments, the electrochemical loading device 7 is configured to be energized in response to a timing signal, an external control signal, or a system anomaly monitoring signal.

[0044] See Figure 2 In some embodiments, the acoustic release device 1 is mounted on top of the underwater equipment, and the electrochemical payload disposal device 7 is mounted in the middle layer of the underwater equipment.

[0045] See Figure 2In some embodiments, the ballast release mechanism further includes a ballast block release hook 3 and a release hook seat 4; the release hook seat 4 is fixed to the support column of the underwater equipment, and the ballast block release hook 3 is installed on the release hook seat 4 via a lever structure, so that when the ballast rope 2 is tensioned, the tension on the ballast rope 2 is less than the weight of the ballast block 5 through the lever action. The lever-type ballast release mechanism design optimizes mechanical efficiency and ensures reliable release with low power consumption.

[0046] See Figure 2 In some embodiments, the jettisoning actuator is provided in multiple sets and distributed on multiple support columns of the underwater equipment.

[0047] The underwater equipment jettisoning system of the present invention adopts a parallel design of acoustic release and electrochemical jettisoning device. The jettisoning is triggered by either device to loosen the rope, thereby achieving safe recovery of the lander. This improves the reliability of jettisoning, can cope with situations such as acoustic release failure, and the electrochemical jettisoning device can realize multiple jettisoning modes, making it widely applicable.

[0048] The following describes specific embodiments of the present invention.

[0049] The underwater equipment jettisoning system of the embodiment is as follows: Figures 1 to 4 As shown, the acoustic release device 1 is installed on top of the deep-sea lander, with no obstructions around it. One end of the tensioner 6 is connected to the jettison block 5 via the jettison rope 2 through the acoustic release device 1. The electrochemical jettison device 7 is installed in the middle layer of the lander, and its annular fused structure is connected to the other end of the tensioner 6 and the lander itself via two plastic connectors (insulated connectors 7-4), and the rope is tightened by the tensioner 6. The jettison rope 2 can be made of high-strength Kevlar rope.

[0050] Four sets of jettison blocks 5 are arranged on the four support columns of the lander. The jettison section mainly consists of jettison block release hooks 3, jettison ropes 2, release hook seats 4, and jettison blocks 5, with the release hook seats 4 welded to the lander support columns. The jettison block release hooks 3 pass through the release hook seats 4, and through leverage, the required tension of the rope is only a fraction of the weight of the jettison block 5. In this embodiment, the jettison block 5, acoustic release device 1, tensioner 6, and electrochemical jettison device 7 are connected in series on the same rope, which must be kept taut during use. The specific lever arm ratio of the lever structure can be determined according to the actual application scenario, such as by adapting and adjusting according to the strength parameters of the jettison rope and the fusing material. The core objective is to reduce the tension borne by the jettison rope through leverage to match the load-bearing capacity of the rope and the fusing material. Before use, the rope is in a slack state, and the release hook 3 of the ballast block is in the open position. During use, the ballast block 5 is suspended from the release hook 3 and temporarily secured with a pin. The rope is then passed through the shackle of the acoustic release device 1 and connected to one end of the tensioner 6. Simultaneously, plastic connectors are attached to the annular fusible structure of the electrochemical ballast disposal device 7. One plastic connector is connected to the lander itself via the rope, and the other is connected to the other end of the tensioner 6. After connection, the release hook 3 of the ballast block is tightened using the tensioner 6, and finally, the pin is removed.

[0051] Functionally, the acoustic release device 1 and the electrochemical jettisoning device 7 are connected in parallel. Either device can loosen the ropes upon jettisoning, allowing the deep-sea lander to surface. Even if both devices trigger their fuses simultaneously, the jettisoning effect will not be affected; as long as the ropes loosen, jettisoning is complete. In the redundant structure used in practical applications, triggering priorities can be manually set according to specific needs: for example, if mission time is prioritized, electrochemical jettisoning can be triggered by the equipment's completion signal, causing it to operate before the acoustic release device is manually triggered. The electrochemical jettisoning device 7 can perform timed jettisoning, event-based jettisoning, and emergency jettisoning: it can be set to a fixed jettisoning time via the system or controlled by the deep-sea lander to execute the jettisoning action when external equipment completes its work or when the deep-sea lander system malfunctions, effectively improving the lander's safety and practicality. Compared to traditional electromagnetic launchers, the electrochemical launcher of this invention has significant advantages: electromagnetic launchers require continuous power to generate magnetic force to hold the launcher block in place, and their power consumption is directly related to the weight of the launcher block—the greater the launcher weight, the greater the current required, and energy consumption accumulates with prolonged operation. Furthermore, electromagnetic launchers are complex in structure and large in size, with stricter volume limitations in the high-pressure environment of the deep sea. Moreover, the complexity of the mechanical structure can lead to increased uncertainty and affect reliability during long-term use. In contrast, the electrochemical launcher of this invention is only briefly powered when launch is triggered, requiring no continuous power supply. Its static power consumption is negligible, and its simple structure and compact size make it better suited to the high-pressure environment of the deep sea, ensuring greater reliability during long-term use.

[0052] The electrochemical method is mainly achieved by watertight cables, electrodes 7-2, stainless steel wires 7-5 or steel wire ropes 7-7, with two specific design methods.

[0053] Method 1 uses stainless steel wire 7-5 as the fusing material: After the first watertight cable 7-1 is vulcanized, two cables are led out, one connected to a vulcanized brass cable and the other to a vulcanized stainless steel wire cable; the brass cable is installed on the lander to ensure it does not come into contact with any metal; the stainless steel wire is coated with an epoxy resin anti-corrosion layer to prevent corrosion from direct contact with seawater. In use, the ends of the stainless steel wire are connected to form a ring-shaped fusing structure, and a 3-5mm layer of epoxy resin is removed from the center as the fusing point 7-3. When the electrochemical ballast jettisoning device performs the jettisoning action, the fusing point in contact with seawater will melt within minutes, causing the rope to slacken and achieving ballast jettisoning. Due to the torque of the release hook on the jettisoning block, the thinner stainless steel wire can provide the required pressure; a single electrochemical ballast jettisoning device can vulcanize multiple stainless steel wires, which can be reused multiple times by cutting off the used portion after each use.

[0054] Method Two uses a first watertight cable 7-1, brass, a second watertight cable 7-6, and a steel wire rope 7-7. After vulcanizing the first watertight cable 7-1, two cables are led out. One cable is connected to the vulcanized brass cable, and the other cable leads to a watertight connector, which can be connected to the second watertight cable 7-6. During use, 3-4 mm of the coating at the center of the steel wire rope is removed as the fusing point 7-3. The steel wire rope is then rolled into a loop fusing structure, with its ends vulcanized and fixed to the second watertight cable 7-6. The steel wire rope is usually thicker and can bear greater weight. After use, simply cut off the portion of the second watertight cable 7-6 that is vulcanized with the steel wire rope; the second watertight cable 7-6 can still be vulcanized and used.

[0055] The cross-sectional area of ​​the fusion structure (such as stainless steel wire or steel wire rope) can be selected according to the weight of the throwing block. Without redundant design and lever structure, relying solely on the electrochemical throwing device to operate, and needing to withstand higher loads, the cross-sectional area of ​​the fusion structure can be increased accordingly, or a material with superior strength can be selected.

[0056] The two methods each have their own characteristics: Method 1 is simple to operate and does not require complicated operation before the next use, but the epoxy resin coating is easy to peel off or be scratched, which may cause the stainless steel wire to fail as a whole, and may eventually damage the brass and the main body of the first watertight cable 7-1 of the electrochemical load-bearing device; Method 2's steel wire rope is more reliable, and only consumes part of the second watertight cable 7-6 each time without damaging the main body, but vulcanization fixing operation is required after each use, making it relatively complicated to use.

[0057] During use, electricity is applied to force the fused material to become the anode, thereby accelerating the electrochemical corrosion process. The fusing time is mainly related to the length of the fusing point, the characteristics of the fused material itself, the contact state between the fused materials, and the current intensity. In practical applications, sufficient margin should be reserved to ensure reliable fusing. From an energy-saving perspective, monitoring sudden changes in current can be used to determine the fusing state; this method can reduce unnecessary energy consumption.

[0058] In addition, brass can be replaced with other corrosion-resistant and highly conductive metals, such as stainless steel and titanium alloys.

[0059] In summary, this invention provides a ballast jettisoning system for underwater equipment, whose core advantage lies in significantly improving the safety and reliability of recovering underwater equipment such as deep-sea landers. This system, by connecting an acoustic release device and an electrochemical jettisoning device in parallel, ensures that the rope slackens when either device performs a jettisoning action, thereby enabling the deep-sea lander to float. Therefore, even if the acoustic release device fails, the electrochemical jettisoning device can still release the ballast in an emergency to allow the lander to float. Furthermore, after the lander has completed its mission, both devices can trigger recovery in a timely manner, effectively avoiding the limitations of a single jettisoning method. It also eliminates the uncertainty of traditional acoustic release devices due to environmental influences and the drawbacks of electromagnetic jettisoning devices, such as large size, high cost, and high static power consumption.

[0060] The electrochemical jettisoning device possesses multiple jettisoning functions. It can perform timed jettisoning by setting a fixed jettisoning time through the system, or it can be controlled by the deep-sea lander to perform event-based or emergency jettisoning when external equipment completes its work or when the system malfunctions, further enhancing the lander's flexibility in responding to different scenarios. This parallel jettisoning system can not only quickly jettison in case of lander anomalies, but also rapidly recover the equipment after the mission is completed, greatly saving ship time, facilitating the next deployment of the equipment, and comprehensively improving the safety, practicality, and reliability of the deep-sea lander.

[0061] Furthermore, the application of this electrochemical payload disposal device is not limited to deep-sea landers, but can also be used for any underwater equipment or platform that can dive and surface by adjusting its weight, helping these devices to achieve timely and reliable recovery, and has broad practical value.

[0062] The above description provides a further detailed explanation of the present invention in conjunction with specific / preferred embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the scope of protection of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications can be made herein without departing from the scope of protection of the patent application.

Claims

1. A jettisoning system for underwater equipment, characterized in that, include: Acoustic release device (1), installed on underwater equipment, used to receive acoustic commands to perform ballast jetting; An electrochemical ballast release device (7) is installed on underwater equipment and is used to perform ballast release by melting through electrochemical corrosion in seawater. The ejection actuator includes an ejection rope (2) and an ejection block (5) connected together; the acoustic release device (1) and the electrochemical ejection device (7) are connected in series through the ejection rope (2) and are connected together to the ejection block (5). Tensioner (6), which is connected to the throwing rope (2), is used to tighten the throwing rope (2) before throwing. The acoustic release device (1) and the electrochemical throwing device (7) form a parallel redundant structure. If either one triggers the throwing action, the throwing rope (2) will loosen and the throwing block (5) will be released. The electrochemical loading device (7) includes a watertight cable, an electrode (7-2), and a fusible structure made of a conductive material that can undergo electrochemical corrosion. The electrode (7-2) and the fuse structure are respectively connected to the power source via a watertight cable. The fuse structure has an exposed fuse point (7-3) and is connected to the throwing rope (2). When energized, current flows from the watertight cable to the electrode and the fuse structure. The two form a conductive circuit through seawater, causing electrochemical corrosion and melting at the fuse point, which causes the throwing rope (2) to relax and release the throwing block (5).

2. The underwater equipment jettisoning system as described in claim 1, characterized in that, The fusion structure is a stainless steel wire (7-5) with an anti-corrosion layer. The fusion point (7-3) is formed by partially removing the anti-corrosion layer. The watertight cable includes a first watertight cable (7-1). The first watertight cable is vulcanized to lead out two cable lines. One cable is connected to the electrode vulcanization, and the other cable is directly connected to one end of the stainless steel wire (7-5).

3. The underwater equipment jettisoning system as described in claim 1, characterized in that, The fusion structure is a steel wire rope (7-7) with an anti-corrosion layer, and the fusion point (7-3) is formed by partially removing the anti-corrosion layer; the watertight cable includes a first watertight cable (7-1) and a second watertight cable (7-6). The first watertight cable is vulcanized to lead out two cable lines, one of which is connected to the electrode vulcanized, and the other is led out to a watertight connector and connected to the second watertight cable. The steel wire rope (7-7) is fixed to the second watertight cable at both ends by vulcanization.

4. The underwater equipment jettisoning system as described in any one of claims 1 to 3, characterized in that, The fusion structure is constructed in a ring shape and is connected to the tensioner (6) and the underwater equipment body respectively by two insulating connectors (7-4).

5. The underwater equipment jettisoning system as described in any one of claims 1 to 3, characterized in that, The electrode (7-2) is made of brass, stainless steel or titanium alloy.

6. The underwater equipment jettisoning system as described in any one of claims 1 to 3, characterized in that, The electrochemical loading device (7) is configured to be energized in response to timing signals, external control signals or system abnormality monitoring signals.

7. The underwater equipment jettisoning system as described in any one of claims 1 to 3, characterized in that, The acoustic release device (1) is installed on the top of the underwater equipment, and the electrochemical payload release device (7) is installed in the middle layer of the underwater equipment.

8. The underwater equipment jettisoning system as described in any one of claims 1 to 3, characterized in that, The ejection actuator also includes an ejection block release hook (3) and a release hook seat (4). The release hook seat (4) is fixed on the support column of the underwater equipment. The release hook (3) of the throwing block is installed on the release hook seat (4) through a lever structure. Thus, when the throwing rope (2) is tensioned, the tension borne by the throwing rope (2) is less than the weight of the throwing block (5) through the lever action.

9. The underwater equipment jettisoning system as described in claim 8, characterized in that, The jettisoning actuators are arranged in multiple sets and distributed on multiple support columns of the underwater equipment.

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