Sealed underwater explosion test device for simulating deepwater condition

Abstract

The utility model discloses a closed underwater explosion test device for simulating deepwater conditions, which comprises a closed test chamber, a wave absorbing system, a static water pressure sensor, a water hammer wave sensor and a test piece support, and the upper side wall of the closed test chamber is provided with a waterproof high-pressure closed door, a switching machine and at least two water inlet pressurizing ports. A water inlet valve is installed on the water inlet pressurizing opening, a water outlet is formed in the bottom of the side wall of the closed laboratory, a water drainage valve is arranged on the water outlet, and the wave absorbing system is arranged on the inner circumferential wall of the closed laboratory. The water inlet pressurization port is arranged on the closed test chamber, water can be injected into the closed test chamber for pressurization through the water inlet pressurization port, the deepwater condition is further simulated, and scientific researchers can perform a deepwater explosion simulation test on the land, so that the difficulty of the traditional underwater explosion test is greatly reduced, the test condition and data collection are improved, and the test efficiency is improved. The test process is more convenient, manpower, material resources and time needed by a traditional test are fully reduced, and popularization and practical value is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of underwater explosion test, and specifically relates to a closed underwater explosion test device for simulating deep water conditions. Background Art

[0002] Buildings such as high dam sand flushing holes and submarine tunnels are located in deep water. Deepwater explosion is the main means of attack. Explosives will release a lot of energy at the moment of underwater explosion. The peak pressure of the explosion shock wave is large and the action time is short. The explosion shock wave and bubble pulsation pressure generated will cause local or global damage to the adjacent building structures. Therefore, it is very important to study the damage characteristics of building structures under deepwater explosion loads. Domestic and foreign researchers have carried out a large number of underwater explosion damage tests on concrete structures and ship structures. The damage research on structures under shallow water explosion impact is more extensive. However, due to the limitations of test conditions, there are relatively few existing deepwater explosion tests. In addition, the deepwater environment is complex, which requires a high level of quality of researchers and makes data collection more difficult. In addition, the traditional underwater explosion test has heavy preparatory work, which is a huge waste of human resources and time costs.

[0003] Therefore, in view of the above shortcomings, there is an urgent need for an underwater explosion test device on land that can simulate deep water environment, accurately collect data, has a wide range of applications and is easy to operate. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a closed underwater explosion test device for simulating deep water conditions, which can be used to carry out simulated deep water explosion tests on land, making the tests convenient.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A closed underwater explosion test device simulating deep water conditions, comprising:

[0007] A closed test chamber, with a waterproof high-pressure closed door, a transfer machine and at least two water inlet and pressure ports on the upper side wall, a water inlet valve installed on the water inlet and pressure port, a drain port on the bottom of the side wall of the closed test chamber, and a drain valve on the drain port;

[0008] A wave-breaking system, which is arranged on the inner wall of the closed laboratory;

[0009] A support rod, which is fixed in a closed laboratory and used for fixing and installing a static water pressure sensor and a water shock wave sensor;

[0010] A static water pressure sensor is fixed on the support rod. The static water pressure sensor is connected to the adapter through a waterproof plug, and the adapter is connected to the pressure display;

[0011] A water shock wave sensor is fixed on the support rod. The water shock wave sensor is connected to the adapter machine through a waterproof plug, and the adapter machine is connected to the burst tester;

[0012] The specimen support is fixed in the center of the bottom wall of the closed test chamber and is used to install the specimen and explosives.

[0013] The closed test chamber is a square closed high-pressure container.

[0014] The wave-breaking system includes a wave-breaking layer and a plurality of wave-breaking plates. The wave-breaking layer is fixed on the inner peripheral wall of the closed test chamber. A mounting plate is provided on the inner side of the wave-breaking layer. The mounting plate is fixed on the bottom wall of the closed test chamber. The wave-breaking plates are evenly distributed on the mounting plate from top to bottom. The wave-breaking plates are hinged to the mounting plate by hinges. The wave-breaking plates are in an inclined state when stationary.

[0015] The thickness of the wave-breaking layer is 9-11 cm, and the angle between the wave-breaking plate and the mounting plate is 55-65 degrees when the wave-breaking plate is stationary.

[0016] The support rod includes an upper slide rod and a lower slide rod. The upper slide rod is slidably mounted on the lower slide rod. Upper mounting holes are evenly distributed on the side wall of the upper slide rod. Lower mounting holes matching the upper mounting holes are evenly distributed on the side wall of the lower slide rod. Fixing bolts are installed in the upper mounting holes and the lower mounting holes to fix the upper slide rod and the lower slide rod.

[0017] An upper abutment plate is fixed to the top end of the upper slide bar, and a lower abutment plate is fixed to the bottom end of the lower slide bar.

[0018] The specimen bracket includes a workbench, which is fixed to the center of the bottom wall of the closed test chamber by four legs. A first L-shaped holder is fixed on one side of the workbench, and a movable second L-shaped holder is provided on the other side of the workbench. The second L-shaped holder is installed on the workbench through a slide rail, and a locking bolt is provided on the second L-shaped holder.

[0019] The utility model is provided with a water inlet and pressure increasing port on the closed test chamber, through which water can be injected and pressurized into the closed test chamber to simulate deep water conditions. Scientific researchers can conduct simulated deep water explosion tests on land, which greatly reduces the difficulty of traditional underwater explosion tests, improves test conditions and data collection, makes the test process more convenient, and fully reduces the manpower, material resources and time required for traditional tests, and has promotion and practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A top view of

[0022] Figure 3 It is a structural schematic diagram of the test piece support of the utility model. DETAILED DESCRIPTION

[0023] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 3 As shown, a closed underwater explosion test device simulating deep water conditions includes a closed test chamber 1, a wave elimination system, a static water pressure sensor 6, a water shock wave sensor 7 and a specimen support 10. The closed test chamber 1 is a square closed high-pressure container. A waterproof high-pressure closed door 2, a switching machine 5 and at least two water inlet pressurization ports 3 are provided on the upper side wall of the closed test chamber 1. A water inlet valve is installed on the water inlet pressurization port 3. A drain port 4 is provided at the bottom of the side wall of the closed test chamber. Multiple drain ports can be provided, and a drain valve is provided on the drain port. Researchers can enter and exit the closed test chamber through the waterproof high-pressure closed door 2 to place test pieces and set sensors and other test preparations. The waterproof high-pressure closed door 2 is provided at the top so that when researchers conduct multiple tests, they only need to drain the water to a suitable depth before continuing to enter the test chamber, and hoist the subsequent test pieces from the top to save test time.

[0025] The wave-breaking system includes a wave-breaking layer 9 and a plurality of wave-breaking plates 8. The wave-breaking layer 9 is made of hollow polymer particles wrapped in cement mortar and laid on the inner wall of the closed test chamber. The irregular interface between the cement mortar and the hollow polymer particles and the internal cavities of the hollow particles are used to diffract and interfere with each other to weaken the explosion shock wave. The thickness of the wave-breaking layer is 9-11 cm. A mounting plate 15 is provided on the inner side of the wave-breaking layer 9. The mounting plate 15 is fixed on the bottom wall of the closed test chamber. The wave-breaking plates 8 are evenly distributed on the mounting plate from top to bottom. The wave-breaking plates 8 are hinged to the mounting plate 15 by hinges. The wave-breaking plates are in an inclined state when stationary, and the angle between them and the mounting plate is 55-65 degrees. When the explosion shock wave arrives, the wave-breaking plates are impacted and rotate, disturbing the water body and weakening the propagation energy of the explosion shock wave.

[0026] The support rod 14 includes an upper slide rod 16 and a lower slide rod 17, and the upper slide rod 16 is slidably mounted on the lower slide rod 17. The side walls of the upper slide rod 16 are evenly provided with upper mounting holes, and the side walls of the lower slide rod 17 are evenly provided with lower mounting holes matching the upper mounting holes. Fixing bolts are installed in the upper mounting holes and the lower mounting holes, and the top end of the upper slide rod is fixed with an upper support plate 18, and the bottom end of the lower slide rod is fixed with a lower support plate 19. After the support rod is placed in the test position, the lower support plate 19 is supported on the bottom wall of the closed laboratory, and then the upper slide rod is slid upward so that the upper support plate on the upper slide rod is pressed against the top wall of the closed laboratory, and then the fixing bolts are installed in the upper mounting holes and the lower mounting holes to fix the upper slide rod and the lower slide rod. In this way, the support rod is installed very firmly and will not tilt. The position of the support rod can also be adjusted according to different test conditions, and then the position of the static water pressure sensor and the water shock wave sensor can be adjusted to meet the needs of different test positions.

[0027] The static water pressure sensor 6 is fixed on the support rod. The static water pressure sensor 6 can be fixed on the support rod by bolts. The position of the static water pressure sensor on the support rod can be adjusted and fixed at a suitable height as required by the test. The static water pressure sensor is connected to the adapter machine 5 through a waterproof plug, and the adapter machine is connected to the pressure display to monitor the water pressure at the depth of the test piece in real time externally.

[0028] The water shock wave sensor 7 is fixed on the support rod. The water shock wave sensor 7 can be fixed on the support rod by bolts. The position of the water shock wave sensor on the support rod can be adjusted and fixed at a suitable height according to the test requirements. The water shock wave sensor is connected to the adapter machine through a waterproof plug, and the adapter machine is connected to the blasting tester to receive the water shock wave data of the explosion test in real time externally.

[0029] The specimen support is fixed at the center of the bottom wall of the closed test chamber and is used to install the specimen and explosive. The specimen support includes a workbench 20, which is fixed at the center of the bottom wall of the closed test chamber by four legs. A first L-shaped holder 11 is fixed on one side of the workbench, and a movable second L-shaped holder 21 is provided on the other side of the workbench. The second L-shaped holder 21 is installed on the workbench through a slide rail 12, and a locking bolt 13 is provided on the second L-shaped holder 21. The second L-shaped holder 21 moves on the workbench 20 through the slide rail 12 to adjust the position. The second L-shaped holder 13 can be fixed on the slide rail 12 by tightening the locking bolt 13, so that specimens of different sizes can be placed, increasing the diversity of test conditions.

[0030] When the utility model is used, the operation is performed as follows:

[0031] 1. Open the waterproof high-pressure sealed door 2 to enter the sealed test chamber 1, adjust the second L-shaped holder 21 to a suitable position, hoist the test piece into the test piece and place it on the test piece bracket 10, fine-tune the second L-shaped holder 21 and then tighten the locking bolt knob 13 to completely fix the test piece.

[0032] 2. Set the static water pressure sensor 6 at the depth of the test piece, set the water shock wave sensor 7 at the predetermined position, connect the sensor line to the adapter 5 through the waterproof plug, place the explosive on the test piece, and after the explosive is fixed, connect the wire to the adapter 5 through the waterproof plug, and connect the adapter 5 to the detonator. After the preparation work is completed, leave the closed test room and close the waterproof high-pressure closed door 2.

[0033] 3. Fill water into the closed test chamber 1 through the water inlet pressure port 3. During the water filling process, leave one water inlet pressure port as an exhaust port. After the closed test chamber is filled with water, use a liquid booster pump to increase the pressure in the closed test chamber through all the water inlet pressure ports 3. Stop pressurizing when the static water pressure sensor 6 reaches the predetermined static water pressure.

[0034] 4. Detonate the explosives, use multiple water shock wave sensors 7 to record shock wave data, open the waterproof high-pressure sealed door 2 and the water outlet 4 to drain water after a single test, and observe and record the damage results of the test piece under the underwater explosion load.

[0035] After an explosion test is completed, it is only necessary to open the waterproof high-pressure sealed door 2 and the water outlet 4 to reduce the indoor water depth to a suitable depth, and then enter the room to recycle the old test piece and replace it with a new one for the next test, saving time. After all tests are completed, the data collected by each sensor is saved, the indoor water is drained, and the interior of the sealed test room 1 is cleaned.

Claims

1. A closed underwater explosion test device simulating deep water conditions, characterized in that: include: A closed test chamber, with a waterproof high-pressure closed door, a transfer machine and at least two water inlet and pressure ports on the upper side wall, a water inlet valve installed on the water inlet and pressure port, a drain port on the bottom of the side wall of the closed test chamber, and a drain valve on the drain port; A wave-breaking system, which is arranged on the inner wall of the closed laboratory; A support rod, which is fixed in a closed laboratory and used for fixing and installing a static water pressure sensor and a water shock wave sensor; A static water pressure sensor is fixed on the support rod. The static water pressure sensor is connected to the adapter through a waterproof plug, and the adapter is connected to the pressure display; A water shock wave sensor is fixed on the support rod. The water shock wave sensor is connected to the adapter machine through a waterproof plug, and the adapter machine is connected to the burst tester; The specimen support is fixed in the center of the bottom wall of the closed test chamber and is used to install the specimen and explosives.

2. The closed underwater explosion test device for simulating deep water conditions as claimed in claim 1, characterized in that: The closed test chamber is a square closed high-pressure container.

3. The closed underwater explosion test device for simulating deep water conditions as claimed in claim 1, characterized in that: The wave-breaking system includes a wave-breaking layer and a plurality of wave-breaking plates. The wave-breaking layer is fixed on the inner peripheral wall of the closed test chamber. A mounting plate is provided on the inner side of the wave-breaking layer. The mounting plate is fixed on the bottom wall of the closed test chamber. The wave-breaking plates are evenly distributed on the mounting plate from top to bottom. The wave-breaking plates are hinged to the mounting plate by hinges. The wave-breaking plates are in an inclined state when stationary.

4. The closed underwater explosion test device for simulating deep water conditions as claimed in claim 3, characterized in that: The thickness of the wave-breaking layer is 9-11 cm, and the angle between the wave-breaking plate and the mounting plate is 55-65 degrees when the wave-breaking plate is stationary.

5. The closed underwater explosion test device for simulating deep water conditions as claimed in claim 1, characterized in that: The support rod includes an upper slide rod and a lower slide rod. The upper slide rod is slidably mounted on the lower slide rod. Upper mounting holes are evenly distributed on the side wall of the upper slide rod. Lower mounting holes matching the upper mounting holes are evenly distributed on the side wall of the lower slide rod. Fixing bolts are installed in the upper mounting holes and the lower mounting holes to fix the upper slide rod and the lower slide rod.

6. The closed underwater explosion test device for simulating deep water conditions as claimed in claim 5, characterized in that: An upper abutment plate is fixed to the top end of the upper slide bar, and a lower abutment plate is fixed to the bottom end of the lower slide bar.

7. The closed underwater explosion test device for simulating deep water conditions as claimed in claim 1, characterized in that: The specimen bracket includes a workbench, which is fixed to the center of the bottom wall of the closed test chamber by four legs. A first L-shaped holder is fixed on one side of the workbench, and a movable second L-shaped holder is provided on the other side of the workbench. The second L-shaped holder is installed on the workbench through a slide rail, and a locking bolt is provided on the second L-shaped holder.

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