Inflatable concrete ballast tank carrier rocket marine recovery device and method

Abstract

The invention discloses an inflatable concrete ballast tank carrier rocket seaborne recovery device and method, and relates to the technical field of spacecraft recovery, the inflatable concrete ballast tank carrier rocket seaborne recovery device comprises a recovery platform used for providing a landing surface of a rocket, and a positioning system installed on the recovery platform and used for seaborne accurate positioning, the inflatable concrete ballast tank systems are vertically arranged on the recycling platform in a penetrating mode, and the recycling tower system is fixedly installed on the surface of the recycling platform and used for recycling. The ballast tank system is arranged below the recovery platform, and the ballast tank after inflation and water injection can move to the seabed during use to provide support for the recovery platform, so that the stability of the recovery platform is improved, the problem of shaking during rocket recovery is solved, a stable landing environment is provided for rocket recovery, and the recovery platform can be suitable for rockets for tower type recovery, landing leg recovery and the like; the high-precision rocket recovery device has the advantages of being good in stability, high in reliability, good in safety and good in flexibility.

Description

Technical Field

[0001] The present invention relates to the technical field of spacecraft recovery, and in particular to an offshore recovery device and method for a carrier rocket with an inflatable concrete ballast tank. Background Art

[0002] In an era of rapid economic development, reusable liquid-propellant launch vehicle technology is the most effective way to improve launch efficiency and reduce launch costs, and is an inevitable trend in the development of launch vehicle technology. Reusable liquid-propellant launch vehicles are reusable by vertically landing a single stage, recovering it intact. After recovery, it can be overhauled and maintained minimally before being reused. This shortens the reuse cycle to 3-4 weeks, reducing reuse costs.

[0003] At present, there is no dedicated recovery platform for marine recovery of reusable carrier rockets in China. Although the "Dongfang Spaceport" is capable of launching rockets, it is far from meeting the requirements for rocket recovery and landing. For example, the ship has poor resistance to explosions, collisions, and ablation, and the deck static load design does not take impact loads into account. Some floating platforms for offshore operations lack stable support and are subject to shaking, which cannot meet the dynamic accuracy requirements for rocket recovery. Other leg-type offshore engineering vessels, although they can provide stable operating platforms, lack corresponding recovery tower systems. The accuracy requirements for rocket recovery are very high, at the centimeter level, which also places great demands on the offshore recovery operation platform. Conventional ships not only cannot meet the centimeter-level recovery accuracy, but the ship's levelness cannot meet the rocket recovery requirements. Therefore, an inflatable concrete ballast tank carrier rocket marine recovery device is now needed. Summary of the Invention

[0004] The purpose of the present invention is to provide an inflatable concrete ballast tank launch vehicle offshore recovery device and method, provide a floating recovery platform, and set a ballast tank system under the recovery platform, and set a recovery tower system on the recovery platform. The ballast tank can touch the seabed when in use, providing stable support for the recovery platform, solving the shaking problem during rocket recovery, meeting the accuracy requirements of rocket recovery, and solving the technical problems mentioned in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an inflatable concrete ballast tank carrier rocket marine recovery device, comprising a recovery platform for providing a landing surface for the rocket, a positioning system installed on the recovery platform for performing precise positioning at sea, a plurality of inflatable concrete ballast tank systems vertically penetrating the recovery platform, and A recovery tower system fixedly mounted on the surface of the recovery platform for recovery; The inflatable concrete ballast tank system further includes: A valve and pipe assembly for gas injection, water injection, air extraction, and water extraction, an inflatable concrete cabin connected to the output end of the valve and pipe assembly for supporting and positioning, and a locking connection system for connecting the valve and pipe assembly and the inflatable concrete cabin; The recovery platform includes a base plate and a platform cover that are sealed together. A frame for improving the overall strength of the recovery platform is bolted to the surface of the base plate. Two groups of reinforcing frames for support are bolted to the inside of the frame. A group of drivers for driving the propeller to rotate is installed in the middle of each group of reinforcing frames. Two sets of drainage pumps installed between the two sets of reinforcement frames for handling water entering the recovery platform; The inflatable concrete cabin includes a reinforced concrete shell, and a group of water circulation modules are connected and installed at the bottom of each group of reinforced concrete shells.

[0006] Preferably, the valve and pipe assembly is embedded and installed inside the recovery platform, the locking connection system is installed below the recovery platform, and one end of the locking connection system is sealedly connected to the end of the pipe in the valve and pipe assembly, and the bottom end of the locking connection system is sealedly connected to the inflatable concrete cabin, and the valve and pipe assembly independently controls each group of the inflatable concrete cabins.

[0007] Preferably, the inflatable concrete ballast tank system further includes: Airtightness testing system for testing the watertightness and airtightness of ballast tanks; The ballast adjustment system is adapted to different sea conditions and different rocket recovery operation requirements by dynamically adjusting the water injection amount in the inflatable concrete cabin.

[0008] Preferably, the number of the inflatable concrete ballast tanks is at least four, and the inflatable concrete ballast tank includes an inner lining TPU airtight layer and an outer covering reinforced concrete shell. The reinforced concrete shell adopts a segmented hinged structure, and an elastic rubber pad is pre-embedded in the folding part of the hinged structure. The reinforced concrete is mixed with alternative fibers for improving bending strength and avoiding cracks. When the inflatable concrete ballast tank is inflated, the internal TPU airtight layer expands under the action of air pressure, pushing the outer reinforced concrete shell from a folded state to unfold into a designed shape.

[0009] Preferably, a group of waterproof sleeves are fixedly installed on the upper surface of the substrate, and several groups of sealing protection sleeves are installed on the surface of the substrate corresponding to the positions of each group of locking connection systems. A group of water-proof shaft seals are installed on the surface of the substrate on both sides of the waterproof sleeves.

[0010] Preferably, a tail peak compartment is connected and installed at the bottom of the driver, the tail peak compartment extends from the inside of the anti-water ingress shaft seal to the lower side of the base plate, and the propulsion propeller is connected and installed with a rotating shaft key extending from the inside of the tail peak compartment.

[0011] Preferably, a group of suction pipes and a group of drainage pipes are installed on one side of each group of drainage pumps, the end of the suction pipe is located on the upper part of the base plate, a one-way water valve is installed in the middle of the drainage pipe, the end of the drainage pipe extends through the base plate, and a sealing flange is installed at the contact position between the drainage pipe and the base plate.

[0012] Preferably, a bottom trough is provided at the bottom of the reinforced concrete shell, the water circulation module is sealed and installed inside the bottom trough, a water pumping hole is provided at the center of the bottom of the water circulation module, and several groups of drainage holes are provided at the bottom of the water circulation module at equal arcs around the water pumping hole. A water supply pipe is sealed and installed at the upper part of the water circulation module corresponding to the position of the water pumping hole, and a docking water pipe is installed at the upper part of the water circulation module corresponding to the position of each group of drainage holes, and the water supply pipe and the docking water pipe are correspondingly inserted into the interior of the TPU airtight layer.

[0013] Preferably, the recovery tower system comprises: a tower frame, the bottom of which is fixed on the recovery platform; The arm system is arranged on the tower frame and is used to clamp the rocket during recovery. The arm system is provided with a hydraulic buffer system, and the recovery tower system is a detachable device.

[0014] A method for recovering an inflatable concrete ballast tank carrier rocket offshore recovery device comprises the following steps: Step one: Use the positioning system to determine the overall position of the device and ensure navigation to the landing point of the rocket sub-stage. During the navigation process, the concrete cabin remains folded for transportation to reduce the space occupied.

[0015] Step 2: After the entire recovery device sails to the target point, gas is injected into the inflatable concrete cabin through the valve and pipeline assembly to expand and form the inflatable concrete cabin, and the airtightness detection device is activated simultaneously. Then, water is injected into the inflatable concrete cabin through the valve and pipeline assembly to touch the bottom, and finally the recovery platform is lifted off the water surface to reduce the impact of waves on the stability of the recovery platform.

[0016] Step three: After the rocket recovery mission is completed, the seawater in the inflatable concrete cabin is pumped out through the valve and pipe assembly, and then some of the gas is pumped out, and finally it is folded back into place.

[0017] Compared with the prior art, the present invention has the following beneficial effects: In the carrier rocket offshore recovery device and method provided by the present invention, a ballast tank system is set under the recovery platform. The ballast tank after being inflated with air and water can be moved to the seabed when in use to provide support for the recovery platform, thereby improving the stability of the recovery platform, solving the shaking problem during rocket recovery, and providing a stable landing environment for rocket recovery. It can be applied to rockets using tower-type recovery, landing leg recovery, etc., to achieve high-precision rocket recovery, and has the advantages of good stability, high reliability, good safety, and good flexibility.

[0018] The carrier rocket offshore recovery method provided by the present invention and the carrier rocket offshore recovery device provided by the present invention belong to the same inventive concept. Therefore, the carrier rocket offshore recovery method provided by the present invention has at least all the advantages of the carrier rocket offshore recovery device provided by the present invention, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the disassembly of the installation structure of the drainage pump of the present invention; Figure 4 This is a schematic diagram of the driver installation structure of the present invention; Figure 5 This is a schematic diagram of the installation structure of the positioning system of the present invention; Figure 6 This is a schematic diagram of the disassembly of the installation structure of the water circulation module of the present invention; Figure 7 This is a schematic diagram of the installation structure of the water circulation module of the present invention; Figure 8 Flowchart for the implementation of the present invention.

[0020] In the figure: 1. Recovery platform; 2. Positioning system; 3. Inflatable concrete ballast tank system; 4. Recovery tower system; 5. Valve and pipe assembly; 6. Locking connection system; 7. Inflatable concrete cabin; 8. Base plate; 9. Waterproof sleeve; 10. Sealing protection sleeve; 11. Anti-water ingress shaft seal; 12. Frame; 13. Reinforced frame; 14. Drive; 15. Tail peak tank; 16. Propulsion propeller; 17. Drain pump; 18. Suction pipe; 19. Drain pipe; 20. One-way water valve; 21. Sealing flange; 22. Platform top cover; 23. Waterproof inner tube; 24. Bottom sealing plate; 25. Positioning module; 26. Reinforced concrete shell; 27. Bottom trough; 28. Water circulation module; 29. Suction hole; 30. Drain hole; 31. Water supply pipe; 32. Docking water pipe. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0022] The present invention provides: an inflatable concrete ballast tank carrier rocket marine recovery device, such as Figure 1-7 As shown, an inflatable concrete ballast tank launch vehicle marine recovery device includes a recovery platform 1 for providing a landing surface for the rocket, a positioning system 2 installed on the recovery platform 1 for precise positioning at sea, and a plurality of inflatable concrete ballast tank systems 3 vertically extending through the recovery platform 1. The recovery platform 1 is provided with a frame 12, which is, for example, a steel structure and can withstand a vertical load of up to 300 tons, a lateral load of up to 50 tons, and a torque of up to 30,000 kN·m from the rocket. The high-precision positioning device 2 is used to accurately position the recovery platform 1 at the rocket recovery point, and A recovery tower system 4 fixedly mounted on the surface of the recovery platform 1 for recovery; The inflatable concrete ballast tank system 3 also includes: A valve and pipe assembly 5 for injecting air, injecting water, and extracting air and water, an inflatable concrete cabin 7 connected to the output end of the valve and pipe assembly 5 for supporting and positioning, and a locking connection system 6 for connecting the valve and pipe assembly 5 and the inflatable concrete cabin 7. By providing a reusable launch vehicle recovery platform 1, a corresponding inflatable concrete ballast tank system 3 is set on the recovery platform 1, and the recovery platform is positioned to the recovery point by a high-precision positioning device 2. During navigation, the inflatable concrete ballast tank system 3 is not injected with air or water, that is, it is in a folded state. After arriving at the recovery point, the inflatable concrete cabin system 3 is injected with air and water and moves toward the seabed until it contacts the seabed, so that the recovery platform 1 can be lifted off the water surface, providing stable support for the recovery platform 1, and greatly reducing the shaking caused by waves. The recovery tower system 4 is used to recover the rocket, solving the shaking problem during the recovery of the rocket and meeting the accuracy requirements of the rocket recovery. In particular, the recovery tower system 4 is detachable. When it is disassembled, the platform is suitable for the rocket landing legs. When it is installed, the platform is suitable for the rocket arm-holding type, such as chopstick clamping type recovery. The recovery platform 1 includes a base plate 8 and a platform cover 22 that are sealed together. A frame 12 for improving the overall strength of the recovery platform 1 is bolted to the surface of the base plate 8. Two sets of reinforcing frames 13 for support are bolted to the inside of the frame 12. A set of drivers 14 for driving the propulsion propeller 16 is installed in the middle of each set of reinforcing frames 13, and two sets of drainage pumps 17 for handling water entering the recovery platform 1 are installed between the two sets of reinforcing frames 13. The base plate 8 and the platform cover 22 constitute the recovery platform 1. The frame 12 and the reinforcing frames 13 installed on the surface of the base plate 8 are used to support the recovery platform 1 as a whole. Support, and leave enough space for the valve and pipeline assembly 5, protect it during use, and avoid the problem of pipeline connection loss in harsh environment. The drive 14, tail peak cabin 15 and propulsion propeller 16 are more common drive structures on the hull. The overall technology is relatively mature, so it is not repeated. The main purpose of its setting is to ensure that the device as a whole moves on the sea surface, so as to more accurately locate the rocket landing position, cooperate with the recovery tower system 4 to complete the rocket recovery work, and set the drainage pump 17 to prevent the problem of water ingress into the recovery platform 1, thereby ensuring the safety of the internal structure of the recovery platform 1; The inflatable concrete cabin 7 includes a reinforced concrete shell 26. A water circulation module 28 is installed at the bottom of each group of reinforced concrete shells 26. The water circulation module 28 can ensure that seawater can be exchanged with air even if it flows into the TPU airtight layer, thereby achieving balanced operation of the entire device.

[0023] Preferably, the valve and pipe assembly 5 is embedded and installed inside the recovery platform 1. Each group of valve and pipe assembly 5 includes a group of electrically controlled valves for controlling the flow rate. The specifically selected electrically controlled valve model is the Qiniu MZ941H explosion-proof electric gate valve. This electric valve is an existing public technology and is well known to those skilled in the art. The connection method and practical method of the electric valve are also well-known operations. The locking connection system 6 is installed under the recovery platform 1, and one end of the locking connection system 6 is sealed with the end of the pipe in the valve and pipe assembly 5, and the bottom end of the locking connection system 6 is sealed with the inflatable concrete cabin 7. The valve and pipe assembly 5 independently controls each group of inflatable concrete cabins 7. The locking mechanism is the core device for realizing locking and unlocking of mechanical connectors in the field of electrical engineering. Its basic structure includes elastic deformation components, locking protrusions, guide grooves and other components. It realizes reliable maintenance and controllable separation of the plug-in state through mechanical deformation and mechanical cooperation. Several patents disclosed in 2024 show that the mechanism has developed innovative designs such as a five-stage connecting rod transmission and a double torsion spring reset system. In scenarios such as circuit breakers and power switches, the locking mechanism ensures the safety of equipment operation through rocking rod locking, bevel stops and other mechanisms to meet the needs of quick plugging and unplugging of electrical connections. Therefore, it is not protected and a locking connection system that can be adapted to the overall use of the device can be purchased directly on the market.

[0024] Furthermore, the inflatable concrete ballast tank system 3 also includes: Airtightness testing system for testing the watertightness and airtightness of ballast tanks; The ballast regulation system dynamically adjusts the amount of water injected into the inflatable concrete hull 7 to accommodate varying sea conditions and rocket recovery requirements. The ballast regulation system consists of water tanks located along the length of the ship, along the double bottom, sidewalls, or beneath the main deck. By filling or emptying the water tanks, the draft and heel / trim balance of the hull are adjusted to maintain a stable floating state. Ballast regulation systems are commonly used on ships, including the airtightness detection system used for testing, which is also a publicly available technical means used on hulls and will not be described in detail.

[0025] Furthermore, the number of inflatable concrete ballast tanks 7 is at least four, and the recovery platform 1 is set to a rectangular shape. The corresponding four inflatable concrete tanks 7 are set at the four corners of the recovery platform 1, and each inflatable concrete tank 7 can be adjusted individually to cope with different offshore operation conditions, so that the levelness of the recovery platform 1 can be controlled. After adjusting the levelness, it can also be locked and positioned through the set locking connection system 6, which is used to lock the relative position between the inflatable concrete tank 7 and the recovery platform 1 to prevent the recovery platform 1 from shaking. The inflatable concrete ballast tank 7 includes an inner lining TPU airtight layer and an outer reinforced concrete shell 26. When the inflatable concrete tank 7 is inflated, the airtight layer TPU membrane expands under the action of internal air pressure, pushing the outer concrete shell from a folded state to unfold into a designed shape.

[0026] It is worth noting that the reinforced concrete shell 26 adopts a segmented hinged structure, and elastic rubber pads are pre-embedded in the folding part of the hinged structure. Replaceable fibers are added to the reinforced concrete to improve bending strength and avoid cracks. When the inflatable concrete ballast tank 7 is inflated, the TPU airtight layer inside it expands under the action of air pressure, pushing the outer reinforced concrete shell 26 from a folded state to the designed shape.

[0027] Furthermore, a group of waterproof sleeves 9 are fixedly installed on the upper surface of the substrate 8, and several groups of sealing protection sleeves 10 are respectively installed on the surface of the substrate 8 corresponding to the positions of each group of locking connection systems 6. A group of water-proof shaft seals 11 are respectively installed on the surface of the substrate 8 on both sides of the waterproof sleeves 9. The positioning system 2 is installed at the bottom center of the platform top cover 22. The positioning system 2 includes a waterproof inner tube 23, a bottom sealing plate 24 and a positioning module 25. The bottom sealing plate 24 is inserted into the waterproof inner tube 23 to limit the positioning module 25. The waterproof inner tube 23 can be inserted into the waterproof sleeve 9 to complete further waterproofing work, further ensuring the safety of the use of the positioning module 25. The provided sealing protection sleeves 10 limit each group of locking connection systems 6 to ensure the use position of the inflatable concrete cabin 7.

[0028] In addition, a tail peak compartment 15 is connected and installed at the bottom of the driver 14. The tail peak compartment 15 extends from the inside of the anti-water ingress seal 11 to the lower side of the base plate 8, and the propulsion propeller 16 is connected and installed with a rotating shaft key extending from the inside of the tail peak compartment 15. The anti-water ingress seal 11 is set to avoid the problem of water ingress into the recovery platform 1 during the use of the tail peak compartment 15. The driver 14 controls the operation of the tail peak compartment 15 and the propulsion propeller 16 to complete the control of the overall position of the device.

[0029] Preferably, a group of suction pipes 18 and a group of drainage pipes 19 are installed on one side of each group of drainage pumps 17. The end of the suction pipe 18 is located on the upper part of the base plate 8, and a one-way water valve 20 is installed in the middle of the drainage pipe 19. The end of the drainage pipe 19 extends through the base plate 8, and a sealing flange 21 is installed at the contact position between the drainage pipe 19 and the base plate 8. A water pump is installed inside the drainage pump 17, and the water pumping and water delivery operations are completed through the work of the suction pipe 18 and the drainage pipe 19. The one-way water valve 20 installed in the middle of the drainage pipe 19 prevents water from entering through the drainage pipe 19, and the sealing flange 21 further ensures the sealing of the connection position between the drainage pipe 19 and the base plate 8.

[0030] It is worth noting that a bottom trough 27 is provided at the bottom of the reinforced concrete shell 26, and a water circulation module 28 is sealed and installed inside the bottom trough 27. A pumping hole 29 is provided at the center of the bottom of the water circulation module 28, and several groups of drainage holes 30 are provided at the bottom of the water circulation module 28 around the pumping hole 29 in equal arcs. A water supply pipe 31 is sealed and installed at the position corresponding to the pumping hole 29 on the upper part of the water circulation module 28, and a docking water pipe 32 is installed at the position corresponding to each group of drainage holes 30 on the upper part of the water circulation module 28. The water supply pipe 31 and the docking water pipe 32 are correspondingly inserted into the interior of the TPU airtight layer. The working principle of the water circulation module 28 is to pump water by setting a water pump inside the water circulation module 28 to inject water into the TPU airtight layer. When draining, air is injected into the TPU airtight layer through the valve and pipe assembly 5 to squeeze water out of the drainage hole 30 to complete the circulation of air and water. Since it is in the water itself, there is no need to worry about leakage, and the water capacity is guaranteed by injecting air.

[0031] Specifically, the recovery tower system 4 includes: a tower frame, the bottom of which is fixed on the recovery platform; The arm system, mounted on the tower frame, is used to hold the rocket during recovery. The inflatable concrete capsule 7 is perpendicular to the recovery platform 1. Specifically, the recovery tower system 4 includes a tower frame and an arm system. The bottom of the tower frame is fixed to the recovery platform 1. The arm system is mounted on the tower frame and is used to hold the recovered rocket. It is understood that the arm system is also equipped with a hydraulic buffer system. The hydraulic buffer system can be set at the connection between the arm system and the tower frame to offset the impact force during the rocket recovery process. The position of the recovery tower system 4 can be determined based on the counterweight of the recovery platform 1. When the inflatable concrete capsule 7 is set at the four corners of the recovery platform 1, the recovery tower system 4 is set at the top center area of the recovery platform 1.

[0032] In addition, the arm system is equipped with a hydraulic buffer system, and the recovery tower system is a detachable device used to recover rockets in different ways. When there is no recovery tower system, the rocket landing legs land on the platform; when there is a recovery tower system, the rocket is recovered through the arm system.

[0033] A method for recovering an inflatable concrete ballast tank carrier rocket offshore recovery device, such as Figure 8 As shown, the following steps are included: Step one: Use positioning system 2 for positioning to determine the overall position of the device and ensure navigation to the landing point of the rocket sub-stage. During the navigation process, the concrete cabin remains folded for transportation to reduce the space occupied.

[0034] Step 2: After the entire recovery device sails to the target point, gas is injected into the inflatable concrete cabin 7 through the valve and pipeline assembly 5 to expand and form the inflatable concrete cabin 7, and the airtightness detection device is activated simultaneously. Then, water is injected into the inflatable concrete cabin 7 through the valve and pipeline assembly 5 to touch the bottom, and finally the recovery platform 1 is lifted off the water surface to reduce the impact of waves on the stability of the recovery platform 1.

[0035] Step three: After the rocket recovery mission is completed, the seawater in the inflatable concrete cabin 7 is extracted through the valve and pipe assembly 5, and then part of the gas is extracted, and finally it is folded back into place.

[0036] Specifically, a reusable launch vehicle recovery platform 1 is provided, a corresponding inflatable concrete cabin 7 is set on the recovery platform 1, and a high-precision positioning device 2 is used to position the recovery platform 1 at a recovery point. During navigation, the inflatable concrete cabin 7 is not filled with air or water and is in a folded state. After reaching the recovery point, the inflatable concrete cabin 7 moves downward until it contacts the seabed, thereby lifting the recovery platform 1 out of the water. Recovery platform 1 can provide a stable landing environment for rockets of different weights, sizes and trajectories; The recovery tower system 4 is a detachable device, and the recovery platform 1 can provide two rocket landing methods: when there is no recovery tower system 4, the rocket lands through the landing legs; when there is a recovery tower system 4, the rocket is recovered through the arm system.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An inflatable concrete ballast tank launch vehicle marine recovery device, characterized in that: include: a recovery platform (1) for providing a landing surface for the rocket; A positioning system (2) installed on the recovery platform (1) for performing precise positioning at sea; a plurality of inflatable concrete ballast tank systems (3) vertically penetrating the recovery platform (1); and A recovery tower system (4) fixedly mounted on the surface of the recovery platform (1) for recovery; The inflatable concrete ballast tank system (3) comprises: a valve and pipe assembly (5) for performing air injection, water injection, air extraction and water extraction, an inflatable concrete tank (7) connected to the output end of the valve and pipe assembly (5) for supporting and positioning, and a locking connection system (6) for connecting the valve and pipe assembly (5) and the inflatable concrete tank (7); The recovery platform (1) comprises a base plate (8) and a platform top cover (22) which are sealed and installed together. A frame (12) for improving the overall strength of the recovery platform (1) is bolted to the surface of the base plate (8). Two groups of reinforcing frames (13) for supporting are bolted to the inner side of the frame (12). A group of drivers (14) for driving the propulsion propeller (16) to rotate are installed in the middle of each group of reinforcing frames (13). Two groups of drainage pumps (17) for treating water entering the recovery platform (1) are installed between the two groups of reinforcing frames (13).

2. The inflatable concrete ballast tank carrier rocket marine recovery device according to claim 1, characterized in that: The valve and pipeline assembly (5) is embedded and installed inside the recovery platform (1), the locking connection system (6) is installed below the recovery platform (1), and one end of the locking connection system (6) is sealedly connected to the end of the pipeline inside the valve and pipeline assembly (5), and the bottom end of the locking connection system (6) is sealedly connected to the inflatable concrete cabin (7), and the valve and pipeline assembly (5) independently controls each group of the inflatable concrete cabins (7).

3. The inflatable concrete ballast tank carrier rocket marine recovery device according to claim 1, characterized in that: The inflatable concrete cabin (7) comprises a reinforced concrete shell (26), and a group of water circulation modules (28) are installed at the bottom of each group of reinforced concrete shells (26).

4. The inflatable concrete ballast tank carrier rocket marine recovery device according to claim 3, characterized in that: The number of the inflatable concrete ballast tanks (7) is at least four. The inflatable concrete ballast tanks (7) include an inner lining TPU airtight layer and an outer covering reinforced concrete shell (26). The reinforced concrete shell (26) adopts a segmented hinged structure.

5. The inflatable concrete ballast tank carrier rocket marine recovery device according to claim 1, characterized in that: A set of waterproof sleeves (9) are fixedly mounted on the upper surface of the substrate (8), a plurality of sets of sealing protection sleeves (10) are respectively mounted on the surface of the substrate (8) at positions corresponding to the respective sets of locking connection systems (6), and a set of water-proof shaft seals (11) are respectively mounted on the surface of the substrate (8) on both sides of the waterproof sleeves (9).

6. The inflatable concrete ballast tank carrier rocket marine recovery device according to claim 1, characterized in that: The bottom of the driver (14) is connected to a tail peak compartment (15), the tail peak compartment (15) extends from the inside of the anti-water ingress shaft seal (11) to the lower side of the base plate (8), and the propulsion propeller (16) is connected to the rotating shaft key extending from the inside of the tail peak compartment (15) and is installed.

7. The inflatable concrete ballast tank carrier rocket marine recovery device according to claim 1, characterized in that: A set of water suction pipes (18) and a set of water discharge pipes (19) are respectively installed on one side of each set of the drainage pumps (17). The ends of the water suction pipes (18) are located on the upper part of the base plate (8). A one-way water valve (20) is installed in the middle of the water discharge pipes (19). The ends of the water discharge pipes (19) extend through the base plate (8), and a sealing flange (21) is installed at the contact position between the water discharge pipes (19) and the base plate (8).

8. The inflatable concrete ballast tank carrier rocket marine recovery device according to claim 4, characterized in that: A bottom groove (27) is provided at the bottom of the reinforced concrete shell (26), and the water circulation module (28) is sealed and installed inside the bottom groove (27). A water pumping hole (29) is provided at the center of the bottom of the water circulation module (28), and a plurality of groups of drainage holes (30) are provided at the bottom of the water circulation module (28) at equal arcs around the water pumping hole (29). A water supply pipe (31) is sealed and installed at the position corresponding to the water pumping hole (29) on the upper part of the water circulation module (28), and a docking water pipe (32) is installed at the position corresponding to each group of drainage holes (30) on the upper part of the water circulation module (28), and the water supply pipe (31) and the docking water pipe (32) are correspondingly inserted into the interior of the TPU airtight layer.

9. The inflatable concrete ballast tank carrier rocket marine recovery device according to claim 8, characterized in that: The recovery tower system (4) comprises: a tower frame, the bottom of which is fixed on the recovery platform; The arm system is arranged on the tower frame and is used to clamp the rocket during recovery.

10. A method for recovering a carrier rocket at sea using an inflatable concrete ballast tank recovery device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Use the positioning system (2) to determine the overall position of the device and ensure navigation to the rocket sub-stage landing point; Step 2: After the entire recovery device has sailed to the target location, gas is injected into the inflatable concrete cabin (7) through the valve and pipeline assembly (5), so that the inflatable concrete cabin (7) is expanded and formed, and then water is injected into the inflatable concrete cabin (7) through the valve and pipeline assembly (5) until it touches the bottom, and finally the recovery platform 1 is lifted off the water surface; Step 3: After the rocket recovery mission is completed, the seawater in the inflatable concrete cabin (7) is extracted through the valve and pipe assembly (5), and then part of the gas is extracted, and finally it is folded back into place.

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