Multi-stage self-floating cabin recovery device and method for blasting test

Abstract

The present application relates to a kind of multistage self-floating cabin recovery device for blasting test, including cabin body, self-floating component and inflation assembly;Self-floating component includes float and air bag, air bag one end is connected with float, air bag other end is connected with the inner top wall of cabin body, float can be moved to cabin body outside after cabin is flooded by blast hole, and air bag is moved to with the inner side wall of cabin body abuts;Inflation assembly is used to inflate air bag;The cross section of air bag in inflation state is greater than the size of blast hole of cabin body.The float of the present application moves out of cabin body after the explosion of explosive source, and the buoyancy of itself plays a buffering role to the sinking of cabin body;At the same time, air bag inflation generates larger buoyancy, and with the pull of float, part of water in cabin body is squeezed out, blocked at blast hole and applied to cabin body a floating thrust, so that cabin body self-floats to water surface, and the multistage structure of float and air bag can make cabin body self-float, and recovery is convenient.

Description

Technical Field

[0001] This invention relates to the field of chamber explosion testing technology, specifically to a multi-stage self-floating chamber recovery device and method for explosion testing. Background Technology

[0002] To understand the blast resistance of a ship's compartments, it is necessary to conduct blast tests on the compartments. Specifically, an explosive source is placed near the compartment, and after the explosive source detonates, the damage state of the compartment is detected to understand its blast resistance performance, which facilitates the structural design and optimization of the compartment.

[0003] The compartment will fall into the water after the explosion test, and currently, cranes and other equipment are being used to salvage it.

[0004] However, the large size and weight of the compartment, coupled with its being filled with water, necessitates the use of heavy lifting equipment. Furthermore, the connection between the crane ropes and the compartment must be carried out underwater, resulting in low efficiency and certain risks, making the recovery of the compartment extremely difficult. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a multi-stage self-floating chamber recovery device and method for explosive testing, which addresses the shortcomings of the prior art. The multi-stage structure of the float and airbag enables the chamber body to float in the water and is easy to recover.

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

[0007] A multi-stage self-floating chamber recovery device for blast testing includes a chamber body, a self-floating component, and an inflation component. The self-floating component includes a float and an airbag. One end of the airbag is connected to the float, and the other end is connected to the inner top wall of the chamber body. The float can move out of the chamber body through the blast port after the chamber is flooded, and drive the airbag to move to abut against the inner side wall of the chamber body. The inflation component has an inflation end connected to the airbag for inflating the airbag. The cross-section of the airbag in the inflated state is larger than the size of the blast port of the chamber body.

[0008] In the above scheme, the float includes a rope and multiple floats. One end of the rope is fixedly connected to the airbag, and the multiple floats are arranged sequentially along the length of the rope and fixedly connected to the rope.

[0009] In the above scheme, the float also includes multiple fixing ropes. One end of the multiple fixing ropes is evenly arranged around the circumference of the airbag and fixedly connected to the airbag. The other ends of the multiple fixing ropes converge into one strand and are fixedly connected to the rope.

[0010] In the above scheme, the airbag also includes a hose that connects the airbag to the inflation end of the inflation assembly; the length of the hose is greater than the length or width of the cabin body, so that the float can be moved outside the cabin body and the airbag can be moved to abut against the inner wall of the cabin body.

[0011] In the above scheme, the portion of the hose near the inner top wall of the cabin body is located at the center of the inner top wall of the cabin body.

[0012] In the above scheme, the inflation component is fixedly installed on the top of the cabin body, located outside the cabin body.

[0013] In the above scheme, the device also includes a pod, which is installed on the inner top wall of the cabin body. The pod has an opening and closing cavity inside. The float and the airbag are placed in the cavity before the explosion and removed from the cavity after the explosion.

[0014] In the above scheme, the gondola includes a fixed frame, a movable frame, a diaphragm, and a pusher. The fixed frame is fixed to the inner top wall of the cabin body, and the pusher is installed on the fixed frame. The output end of the pusher is connected to the movable frame to drive the movable frame to move in a direction closer to or away from the fixed frame. The movable frame is positioned directly opposite the fixed frame, and an annular gap is formed between the movable frame and the fixed frame. The diaphragm can be embedded in the annular gap, and the holding cavity is formed between the diaphragm, the fixed frame, and the inner top wall of the cabin body. When the diaphragm is clamped in the annular gap, the float and the airbag are placed on the diaphragm. When the movable frame moves away from the fixed frame, the diaphragm is released from the annular gap under the pressure of the float and the airbag, and the float and the airbag pass through the movable frame to the outside of the holding cavity.

[0015] In the above scheme, the self-floating component also includes a water pump, which is installed at the bottom of the compartment body to drain the water in the compartment body.

[0016] Accordingly, this invention also proposes a method for recovering a multi-stage self-floating chamber for blast testing, applicable to the aforementioned chamber recovery system for blast testing. The implementation steps of this method are as follows:

[0017] After the explosion, the side wall of the compartment body forms a blast hole and falls into the water. As water continues to flow back into the compartment body, the orientation of the compartment body changes to a state with the blast hole facing upward as it sinks.

[0018] As the water flows back into the compartment, the float moves upwards away from the compartment until it is removed from the compartment. The buoyancy of the float itself is applied to the compartment, which buffers the subsidence of the compartment. At the same time, the inflation assembly inflates the airbag. The inflated airbag generates greater buoyancy and, as the float moves, squeezes out some of the water in the compartment and blocks the rupture point, applying an upward thrust to the compartment, thus causing the compartment to float to the surface of the water.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The recovery device of this invention incorporates a float and an airbag within the main body of the compartment. After the explosion, the float moves upwards away from the main body along with the water flowing back into it until it exits the compartment. The buoyancy of the float itself is applied to the main body, buffering its sinking. Simultaneously, the airbag is inflated by the inflation assembly. The inflated airbag generates significant buoyancy and, with the pull of the float, squeezes out some water from the main body, blocking the rupture and applying an upward thrust to the main body, thus causing it to float to the surface. This multi-stage structure of the float and airbag allows the submerged compartment to float naturally, facilitating recovery and solving the problem of the extreme difficulty of retrieving compartments using cranes or other equipment.

[0021] 2. To further improve the self-buoyancy of the compartment, the self-buoyancy component also includes a water pump, which is installed at the bottom of the compartment to drain the water from the compartment. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the multi-stage self-floating chamber recovery device for blasting tests provided in an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the connection between the float and the airbag in the multi-stage self-floating chamber recovery device for blasting tests provided in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the caisson in the multi-stage self-floating chamber recovery device for blasting tests provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of the soft membrane moving out of the annular gap in the multi-stage self-floating chamber recovery device for blasting tests provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the operation of the self-floating component in the multi-stage self-floating chamber recovery device for blasting tests provided in an embodiment of the present invention.

[0028] In the diagram: 100, the main compartment; 110, the breach;

[0029] 200. Self-floating component; 210. Float; 211. Rope; 212. Buoy; 213. Fixing rope; 220. Airbag; 221. Hose; 230. Water pump;

[0030] 300. Inflatable components;

[0031] 400. Hoisting box; 410. Fixed frame; 420. Moving frame; 430. Flexible membrane; 440. Pushing component. Detailed Implementation

[0032] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] like Figure 1 and Figure 5 As shown, the present invention provides a multi-stage self-floating chamber recovery device for blast testing, comprising a chamber body 100, a self-floating component 200, and an inflation component 300. The chamber body 100 is the main structure for conducting blast testing. The self-floating component 200 is a structure that applies buoyancy to the chamber body 100, causing it to float to the water surface. The self-floating component 200 includes a float 210 and an airbag 220. One end of the airbag 220 is connected to the float 210, and the other end is connected to the inner top wall of the chamber body 100. After water enters the chamber, the float 210 can move through the blast port 110 to the outside of the chamber body 100, and move the airbag 220 to abut against the inner side wall of the chamber body 100. The inflation component 300 is a structure for inflating the airbag 220. The inflation assembly 300 is fixedly mounted on the top of the cabin body 100. The inflation assembly 300 has an inflation end that communicates with the airbag 220 for inflating the airbag 220. In order for the airbag 220 to block the rupture opening 110, the cross-section of the airbag 220 in the inflated state is larger than the size of the rupture opening 110 of the cabin body 100.

[0034] During implementation, after the explosive source detonates, a blast hole 110 is formed on the side wall of the main body 100 and falls into the water. As water continuously flows back into the main body 100, the attitude of the main body 100 changes to a state with the blast hole 110 facing upward as it sinks. The float 210 moves away from the main body 100 and upward with the water flowing back into the main body 100 until it moves out of the main body 100. The buoyancy of the float 210 itself is applied to the main body 100, which plays a buffering role in the sinking of the main body 100. At the same time, the inflation component 300 inflates the airbag 220. The inflated airbag 220 generates a large buoyancy and, with the pull of the float 210, squeezes out some of the water in the main body 100 and blocks it at the blast hole 110, applying an upward thrust to the main body 100, thereby causing the main body 100 to float to the water surface. The multi-stage structure of the float 210 and airbag 220 allows the main body of the compartment 100 to float on its own after falling into the water, making recovery convenient.

[0035] The float 210 exerts a force on the cabin body 100 through its own buoyancy to slow down the sinking speed of the cabin body 100. The float 210 can be a structure with buoyancy such as foam.

[0036] like Figure 2 As shown, in one embodiment, the float 210 includes a rope 211 and a plurality of floats 212. One end of the rope 211 is fixedly connected to the airbag 220, and the plurality of floats 212 are arranged sequentially along the length of the rope 211 and fixedly connected to the rope 211.

[0037] It is understood that the float 212 can be a spherical block, a square block, etc., and the shape of the float 212 is not limited in this embodiment of the invention.

[0038] like Figure 2 As shown, in order to make the connection between the rope 211 and the airbag 220 stable, in one embodiment, the float 210 also includes a plurality of fixing ropes 213. One end of the plurality of fixing ropes 213 is evenly arranged around the airbag 220 and fixedly connected to the airbag 220, and the other end of the plurality of fixing ropes 213 converges into one strand and is fixedly connected to the rope 211.

[0039] like Figure 2 As shown, to enable the inflation of the airbag 220 and its movement to abut against the inner wall of the cabin body 100, in one embodiment, the airbag 220 further includes a hose 221. The hose 221 connects the airbag 220 to the inflation end of the inflation assembly 300. The length of the hose 221 is greater than the length or width of the cabin body 100, so that the float 210 can move outside the cabin body 100 and the airbag 220 can move to abut against the inner wall of the cabin body 100. The portion of the hose 221 near the inner top wall of the cabin body 100 is located at the center of the inner top wall of the cabin body 100.

[0040] It should be noted that the hose 221 should have a certain deformation capacity so that the hose 221 can be coiled and stacked to the top of the compartment body 100. At the same time, the hose 221 should have a certain tensile strength to prevent the hose 221 from being pulled apart.

[0041] In one embodiment, the inflation assembly 300 includes a plurality of gas cylinders, the outlets of which are connected to the air bag 220, and a valve is provided at the outlet of the gas cylinder.

[0042] In order to house the float 210 and the airbag 220 at the inner top wall of the compartment body 100, in this embodiment, the recovery device also includes a jacking box 400, which is installed on the inner top wall of the compartment body 100. The jacking box 400 has an openable and closable holding cavity inside. The float 210 and the airbag 220 are placed in the holding cavity before the explosion and removed from the holding cavity after the explosion.

[0043] To allow the containment chamber to be opened and closed, the container 400 is typically designed with a flip-up cover at the bottom. However, flipping the cover may obstruct the rupture opening 110, affecting the movement of the float 210 and the airbag 220. Therefore, as... Figure 3 As shown, the gondola 400 in this embodiment includes a fixed frame 410, a movable frame 420, a soft membrane 430, and a pusher 440. The fixed frame 410 is fixedly disposed on the inner top wall of the cabin body 100. The pusher 440 is installed on the fixed frame 410. The output end of the pusher 440 is connected to the movable frame 420 to drive the movable frame 420 to move in a direction close to or away from the fixed frame 410. The movable frame 420 is disposed directly opposite the fixed frame 410. An annular gap is formed between the movable frame 420 and the fixed frame 410. The soft membrane 430 can be embedded in the annular gap. A holding cavity is formed between the soft membrane 430, the fixed frame 410, and the inner top wall of the cabin body 100.

[0044] Specifically, when the diaphragm 430 is clamped in the annular gap, the float 210 and the airbag 220 can be placed on the diaphragm 430. When the moving frame 420 moves away from the fixed frame 410, such as Figure 4 As shown, the soft membrane 430 is dislodged from the annular gap under the pressure of the float 210 and the airbag 220, and the float 210 and the airbag 220 pass through the moving frame 420 to the outside of the holding cavity.

[0045] The pusher 440 can be implemented using a structure such as an electric push rod. It is understood that the valve of the gas cylinder and the action of the electric push rod can be automatically opened depending on whether the compartment body 100 has fallen into the water. Whether the compartment body 100 has fallen into the water can be determined by means of a water level sensor.

[0046] To further improve the self-buoyancy of the compartment body 100, the self-buoyancy component 200 in this embodiment also includes a water pump 230, which is installed at the bottom of the compartment body 100 to drain water from the compartment body 100.

[0047] In one embodiment, the water pump 230 is installed at the center of the bottom of the compartment body 100 to accommodate the rupture openings 110 at different side walls.

[0048] Accordingly, this invention also proposes a method for recovering a multi-stage self-floating compartment for blast testing, applicable to the blast testing compartment recovery system described above. The implementation steps of this method are as follows:

[0049] Before the explosion test, the float 210 and the airbag 220 were placed inside the holding cavity of the gondola 400;

[0050] After the explosion, the side wall of the compartment body 100 forms a blast hole 110 and falls into the water. As water continues to flow back into the compartment body 100, the attitude of the compartment body 100 changes to a state with the blast hole 110 facing upward as it sinks. At the same time as the compartment is flooded, the pusher 440 pushes the moving frame 420 to move away from the fixed frame 410. The soft membrane 430 is separated from the annular gap under the pressure of the float 210 and the airbag 220. The float 210 and the airbag 220 pass through the moving frame 420 to the outside of the holding cavity.

[0051] As the water flowing back into the compartment 100, the float 210 moves upward away from the compartment 100 until it is removed from the compartment 100. The buoyancy of the float 210 itself is applied to the compartment 100, which buffers the sinking of the compartment 100. At the same time, the inflation assembly 300 inflates the airbag 220. The inflated airbag 220 generates a large buoyancy and, with the pull of the float 210, squeezes out some of the water in the compartment 100 and blocks the rupture opening 110, which applies an upward thrust to the compartment 100, thereby causing the compartment 100 to float to the water surface.

[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0053] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A multi-stage self-floating chamber recovery device for blasting tests, characterized in that, The system includes a cabin body, a self-buoyancy assembly, and an inflation assembly. The self-buoyancy assembly includes a float and an airbag. The float includes a rope and multiple floats. One end of the rope is fixedly connected to the airbag. The multiple floats are arranged sequentially along the length of the rope and fixedly connected to the rope. One end of the airbag is connected to the rope of the float, and the other end of the airbag is connected to the inner top wall of the cabin body. The float can move out of the cabin body through a rupture port after the cabin is flooded, and drive the airbag to move to abut against the inner side wall of the cabin body. The inflation assembly has an inflation end connected to the airbag for inflating the airbag. The cross-section of the airbag in the inflated state is larger than the size of the rupture port of the cabin body. The device further includes a gondola, which comprises a fixed frame, a movable frame, a diaphragm, and a pusher. The fixed frame is fixed to the inner top wall of the cabin body, and the pusher is mounted on the fixed frame. The output end of the pusher is connected to the movable frame to drive the movable frame to move in a direction closer to or away from the fixed frame. The movable frame is positioned opposite the fixed frame, and an annular gap is formed between the movable frame and the fixed frame. The diaphragm can be embedded in the annular gap, and a holding cavity is formed between the diaphragm, the fixed frame, and the inner top wall of the cabin body. Before the explosion, the diaphragm is clamped in the annular gap, and the float and airbag are placed on the diaphragm. After the explosion, the movable frame moves away from the fixed frame, and the diaphragm is released from the annular gap under the pressure of the float and airbag. The float and airbag pass through the movable frame to the outside of the holding cavity.

2. The multi-stage self-floating chamber recovery device for blasting tests according to claim 1, characterized in that, The float also includes multiple fixing ropes, one end of which is evenly arranged around the circumference of the airbag and fixedly connected to the airbag, and the other ends of which converge into one strand and are fixedly connected to the rope.

3. The multi-stage self-floating chamber recovery device for blasting tests according to claim 1, characterized in that, The airbag also includes a hose that connects the airbag to the inflation end of the inflation assembly; the length of the hose is greater than the length or width of the cabin body, so that the float can be moved outside the cabin body and the airbag can be moved to abut against the inner wall of the cabin body.

4. The multi-stage self-floating chamber recovery device for blasting tests according to claim 3, characterized in that, The portion of the hose near the inner top wall of the cabin body is located at the center of the inner top wall of the cabin body.

5. The multi-stage self-floating chamber recovery device for blasting tests according to claim 1, characterized in that, The inflation assembly is fixedly installed on the top of the cabin body, located outside the cabin body.

6. The multi-stage self-floating chamber recovery device for blasting tests according to claim 1, characterized in that, The self-floating assembly also includes a water pump installed at the bottom of the compartment body to drain water from the compartment body.

7. A method for recovering a multi-stage self-floating chamber used in a blasting test, characterized in that, The method is applicable to the multi-stage self-floating chamber recovery device for blast testing as described in any one of claims 1-6, and the implementation steps are as follows: After the explosion, the side wall of the compartment body forms a blast hole and falls into the water. As water continues to flow back into the compartment body, the orientation of the compartment body changes to a state with the blast hole facing upward as it sinks. As the water flows back into the compartment, the float moves upwards away from the compartment until it is removed from the compartment. The buoyancy of the float itself is applied to the compartment, which buffers the subsidence of the compartment. At the same time, the inflation assembly inflates the airbag. The inflated airbag generates greater buoyancy and, as the float moves, squeezes out some of the water in the compartment and blocks the rupture point, applying an upward thrust to the compartment, thus causing the compartment to float to the surface of the water.

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