Automatic floating recovery device for underwater open cylinder and use method

Abstract

The application provides an automatic floating recovery device for an open cylinder under water and a use method, which comprises an open cylinder shell, the internal structure of the open cylinder shell is divided into two cavities by a partition plate, a high-pressure gas tank assembly and a trigger valve assembly are accommodated in the cavity at the closed end of the open cylinder shell, the other cavity is used for accommodating a series multi-section air bag assembly, the trigger valve assembly is connected with the series multi-section air bag assembly through a plug pin type air supply pipe, and a towing rope is connected to the outside of the series multi-section air bag assembly. The recovery device is a mechanical structure, is simple to operate, and is convenient to deflate.

Description

Technical Field

[0001] This invention relates to the field of underwater salvage and recovery technology, specifically to an automatic floating and recovery device for open cylindrical components underwater and its usage method. Background Technology

[0002] After completing their function in aquatic environments, open-ended cylindrical components need to be floated for recovery and reuse. Current floatation and recovery devices mostly use unidirectional solenoid valves to control high-pressure air tanks to inflate folded air bladders, causing the open-ended cylindrical component to float to the surface. However, solenoid valves require external control circuitry, which not only increases structural complexity but also makes them prone to short circuits, open circuits, and other failures. Furthermore, the safe deployment and sequential inflation of stacked air bladders during inflation present challenges, which can affect the discharge of water from the cylinder, reduce the buoyancy, or even prevent buoyancy altogether, resulting in losses. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to overcome the shortcomings of existing methods and provide an automatic floating and recovery device for underwater open cylindrical components, along with a method for using it. This recovery device is a mechanical structure, simple to operate, and convenient for venting.

[0004] To achieve the above-mentioned technical features, the present invention aims to provide an automatic floating and recovery device for an open cylindrical component underwater, comprising an open cylindrical component shell. The internal structure of the open cylindrical component shell is divided into two cavities by a partition. The cavity located at the closed end of the open cylindrical component shell houses a high-pressure gas tank assembly and a trigger valve assembly. The other cavity houses a series multi-section airbag assembly. The trigger valve assembly is connected to the series multi-section airbag assembly via a pin-type air supply pipe. A traction cable is connected to the outside of the series multi-section airbag assembly.

[0005] The high-pressure gas tank assembly is horizontally installed inside the cavity of the closed end of the open cylindrical component housing via a high-pressure gas tank assembly fixing bracket.

[0006] The open end of the high-pressure gas tank assembly is connected to the trigger valve assembly via threads, and a gasket is provided on the joint end face of the two.

[0007] The trigger-type valve assembly includes a valve body, which contains a piston rod, a spring, and a pin-type air supply pipe. Both the piston rod and the pin-type air supply pipe are fitted with sealing rings between themselves and the valve body. The spring is sleeved on the piston rod, and both ends of the spring abut against the latches on the valve body and the piston rod, respectively.

[0008] The pin-type air supply pipe is fixedly connected to the series multi-section airbag assembly.

[0009] The pin-type air supply pipe can be used to lock the piston rod.

[0010] The multi-segment airbag assembly has through holes between each airbag segment.

[0011] The multi-section airbag assembly is made of dense nylon filament fabric.

[0012] The traction cable is installed at the head of the series multi-section airbag assembly.

[0013] How to use the underwater open cylindrical automatic floating and recovery device:

[0014] Under normal conditions, the multi-section airbag assembly is stacked on the partition, and the pin-type air supply pipe is inserted into the piston rod to lock the piston rod.

[0015] When inflation is needed, pulling the traction cable unfolds the stacked multi-section airbag assembly, which in turn releases the piston rod through the pin-type air supply pipe connected to the bottom of the assembly. The compressed spring pushes the piston rod to move, and the compressed gas stored in the high-pressure gas tank assembly flows into the first section of the multi-section airbag assembly through the inner hole of the pin-type air supply pipe via the trigger valve assembly. There are through holes between each airbag section. Due to the throttling effect of the through holes, the gas first fills the first airbag section, and then sequentially inflates the remaining airbags one by one towards the cylinder opening. When it expands to a certain volume, it carries the open cylindrical shell and gradually rises to the water surface, achieving automatic floating and recovery.

[0016] The present invention has the following beneficial effects:

[0017] 1. Stack the airbags on the internal partition of the open cylindrical component. Pull the traction cable on the outside of the airbags to stretch the multi-section airbags in series along the direction parallel to the axis of the open cylindrical component. The pulling force drives the trigger valve connected to the bottom of the airbag to connect the high-pressure air tank to inflate the airbags, so that the open cylindrical component is subjected to a certain buoyancy and floats to the surface of the water, thus achieving the purpose of recovery.

[0018] 2. The airbag is designed as a series of multi-section airbags, with small holes connecting each section. Due to the throttling effect of the small holes, the gas will first fill the first airbag closest to the valve, and then fill each section sequentially towards the cylinder opening. After inflation, the outer diameter of the airbag is larger than the inner diameter of the open cylindrical part, so the water inside the cylinder is discharged to the greatest extent during the sequential inflation process. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the invention operating in water.

[0022] Figure 3This is a schematic diagram of the multi-segment airbag structure in series according to the present invention.

[0023] Figure 4 This is a schematic diagram of the closed state of the trigger-type valve of the present invention.

[0024] Figure 5 This is a schematic diagram of the open state of the trigger-type valve of the present invention.

[0025] In the figure: 1. Open cylindrical housing; 2. High-pressure gas tank assembly; 3. High-pressure gas tank assembly fixing bracket; 4. Trigger valve assembly; 5. Pin-type gas supply pipe; 6. Series multi-section airbag assembly; 7. Traction cable; 8. Partition plate; 9. Gasket; 401. Valve body; 402. Piston rod; 403. Spring; 404. Sealing ring; 601. Through hole. Detailed Implementation

[0026] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0027] Example 1:

[0028] like Figure 1-5 As shown, an automatic floating and recovery device for an open-ended cylindrical component underwater comprises an open-ended cylindrical shell 1. The internal structure of the shell 1 is divided into two cavities by a partition 8. The cavity located at the closed end of the shell 1 houses a high-pressure gas tank assembly 2 and a trigger valve assembly 4. The other cavity houses a series multi-section airbag assembly 6. The trigger valve assembly 4 is connected to the series multi-section airbag assembly 6 via a pin-type air supply pipe 5. A traction cable 7 is connected to the outside of the series multi-section airbag assembly 6. This recovery device is a mechanical structure, simple to operate, and convenient to deflate. By folding the series multi-section airbag assembly 6 and placing it at the bottom of the open-ended cylindrical shell 1, the traction cable at the head of the airbag is pulled, stretching the series multi-section airbag in a direction parallel to the axis of the open-ended cylindrical shell. The pulling force drives the trigger valve connected to the bottom of the airbag to connect the high-pressure gas tank, inflating the airbag and thus achieving the purpose of recovery.

[0029] Furthermore, the high-pressure gas cylinder assembly 2 is horizontally installed inside the cavity of the closed end of the open cylindrical housing 1 via a high-pressure gas cylinder assembly fixing bracket 3. The high-pressure gas cylinder assembly 2 can be reliably fixed using the high-pressure gas cylinder assembly fixing bracket 3.

[0030] Furthermore, the open end of the high-pressure gas cylinder assembly 2 is connected to the trigger-type valve assembly 4 via threads, and a gasket 9 is provided on the mating end face of the two. This threaded connection ensures a reliable connection between the high-pressure gas cylinder assembly 2 and the trigger-type valve assembly 4, while the gasket 9 provides a sealing effect. It also facilitates the disassembly and replacement of the high-pressure gas cylinder assembly 2.

[0031] Furthermore, the trigger-type valve assembly 4 includes a valve body 401, within which a piston rod 402, a spring 403, and a pin-type air supply pipe 5 are disposed. A sealing ring 404 is provided between the piston rod 402 and the pin-type air supply pipe 5 and the valve body 401. The spring 403 is sleeved on the piston rod 402, with both ends of the spring 403 abutting against the locking joints of the valve body 401 and the piston rod 402, respectively. The trigger-type valve assembly 4 facilitates air supply control.

[0032] Furthermore, the pin-type air supply pipe 5 is fixedly connected to the series multi-section airbag assembly 6. This ensures stable force transmission.

[0033] Furthermore, the pin-type air supply pipe 5 can be used to lock the piston rod 402, thereby facilitating the control of the opening and closing of the trigger-type valve assembly 4.

[0034] Furthermore, the series-connected multi-section airbag assembly 6 has through holes 601 between each airbag section. Due to the throttling effect of the holes, the series-connected multi-section airbags are inflated sequentially, thereby maximizing the discharge of water from the cylinder.

[0035] Furthermore, the multi-section airbag assembly 6 is made of dense nylon filament fabric. The use of dense nylon filament fabric ensures airtightness and facilitates deformation control.

[0036] Furthermore, the traction cable 7 is installed at the head of the tandem multi-section airbag assembly 6. The traction cable 7 facilitates the traction and deployment of the tandem multi-section airbag assembly 6.

[0037] Example 2:

[0038] How to use the underwater open cylindrical automatic floating and recovery device:

[0039] In normal conditions, the multi-section airbag assembly 6 is stacked on the partition plate 8, and the pin-type air supply pipe 5 is inserted into the piston rod 402 to lock the piston rod 402.

[0040] When inflation is required, pulling the traction cable 7 unfolds the stacked multi-section airbag assembly 6, causing the pin-type air supply pipe 5 connected to the bottom of the multi-section airbag assembly 6 to release the piston rod 402. The compressed spring 403 pushes the piston rod 402 to move. At the same time, the compressed gas stored in the high-pressure gas tank assembly 2 flows into the first section of the multi-section airbag assembly 6 through the inner hole of the pin-type air supply pipe 5 inside the trigger valve assembly 4. There are through holes 601 between each section of airbag. Due to the throttling effect of the holes, the gas first fills the first section of airbag, and then sequentially inflates the remaining airbags one by one towards the cylinder opening. When it expands to a certain volume, it carries the open cylindrical shell 1 and gradually rises to the water surface, realizing automatic floating and recovery.

Claims

1. An automatic floating and recovery device for an open cylindrical component submerged in water, characterized in that: It includes an open cylindrical housing (1), the internal structure of which is divided into two cavities by a partition (8). The cavity located at the closed end of the open cylindrical housing (1) houses the high-pressure gas tank assembly (2) and the trigger valve assembly (4). The other cavity houses the multi-section airbag assembly (6). The trigger valve assembly (4) is connected to the multi-section airbag assembly (6) via a pin-type air supply pipe (5). A traction cable (7) is connected to the outside of the multi-section airbag assembly (6). The trigger valve assembly (4) includes a valve body (40). 1) The valve body (401) is provided with a piston rod (402), a spring (403) and a pin-type air supply pipe (5). Both the piston rod (402) and the pin-type air supply pipe (5) are provided with a sealing ring (404) between them and the valve body (401). The spring (403) is sleeved on the piston rod (402), and the two ends of the spring (403) abut against the bayonet of the valve body (401) and the piston rod (402) respectively. The pin-type air supply pipe (5) is fixedly connected to the multi-section airbag assembly (6) in series. The pin-type air supply pipe (5) can be used to lock the piston rod (402).

2. The automatic floating and recovery device for the underwater open cylindrical component according to claim 1, characterized in that: The high-pressure gas tank assembly (2) is horizontally installed inside the cavity of the closed end of the open cylindrical housing (1) via a high-pressure gas tank assembly fixing bracket (3).

3. The automatic floating and recovery device for the underwater open cylindrical component according to claim 1, characterized in that: The open end of the high-pressure gas tank assembly (2) is connected to the trigger valve assembly (4) by a thread, and a gasket (9) is provided on the joint end face of the two.

4. The automatic floating and recovery device for the underwater open cylindrical component according to claim 1, characterized in that: The series multi-section airbag assembly (6) has through holes (601) between each airbag section.

5. The automatic floating and recovery device for the underwater open cylindrical component according to claim 1, characterized in that: The multi-section airbag assembly (6) is made of dense nylon fabric.

6. The automatic floating and recovery device for the underwater open cylindrical component according to claim 1, characterized in that: The traction cable (7) is installed at the head of the tandem multi-section airbag assembly (6).

7. The method of using the automatic floating and recovery device for the underwater open cylindrical component as described in any one of claims 1-6, characterized in that: In normal conditions, the multi-section airbag assembly (6) is stacked on the partition (8), and the pin-type air supply pipe (5) is inserted into the piston rod (402) to lock the piston rod (402); When inflation is required, the traction cable (7) is pulled to unfold the stacked multi-section airbag assembly (6), which causes the pin-type air supply pipe (5) connected to the bottom of the multi-section airbag assembly (6) to release the piston rod (402). The compressed spring (403) pushes the piston rod (402) to move. At the same time, the compressed gas stored in the high-pressure gas tank assembly (2) flows into the first section of the multi-section airbag assembly (6) through the inner hole of the pin-type air supply pipe (5) via the trigger valve assembly (4). There is a through hole (601) between each section of airbag. Due to the throttling effect of the small hole, the gas first fills the first section of airbag, and then sequentially inflates the remaining airbags one by one in the direction of the cylinder opening. When it expands to a certain volume, it carries the open cylindrical shell (1) to gradually rise to the water surface and realize automatic floating and recovery.

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