Underwater simulation exploder

Abstract

The underwater simulation exploder is characterized in that the underwater simulation exploder comprises a shell, an air explosion tank, an air storage tank, a control circuit board, a wireless communication device and a battery, the wireless communication device, the control circuit board and the battery are installed on the shell, the air explosion tank is connected with the air storage tank, and the air storage tank is connected with the wireless communication device. The air explosion tank, the air storage tank and the control circuit board are arranged in the shell.

Description

Technical Field

[0001] This invention relates to the field of simulated explosives, and in particular to an underwater simulated explosive. Background Technology

[0002] Underwater detonator simulators are devices used in scientific research, military training, or engineering testing that simulate the effects of an actual explosion, but typically do not use real explosives. Such devices allow the study of the physical effects of an explosion in a controlled environment, such as shock waves, pressure distribution, and bubble dynamics, without actually detonating dangerous explosives.

[0003] In scientific research, underwater simulated explosive devices can be used to study the impact of underwater explosions on marine life and the extent of damage to ship structures. In the military field, these simulators can help develop and test defensive measures and assess potential underwater threats. Engineering testing may involve testing the durability of materials or ensuring the safety of offshore structures such as oil platforms.

[0004] In existing technologies, traditional improvised explosive device (IED) simulators primarily rely on detonators, explosive charges, blasting discs, or containers to produce an explosive effect. The resulting fragments can potentially endanger personnel participating in training. Furthermore, after an explosion, the IED simulator requires reloading and cannot be quickly reused. Therefore, for training institutions, ordinary IED simulators are not only expensive but also dangerous.

[0005] Therefore, it is necessary to provide an underwater explosion simulator to solve the aforementioned technical problems. The underwater explosion simulator is used in campaign exercises and tactical training to simulate the sound and visual effects caused by the detonation of explosives underwater. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, the abstract and title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an underwater simulated explosive device, characterized in that: it includes a shell, an air explosion canister, a gas storage tank, a control circuit board, a wireless communication device, and a battery, wherein the wireless communication device, the control circuit board, and the battery are mounted on the shell, the air explosion canister is connected to the gas storage tank, and the air explosion canister, the gas storage tank, and the control circuit board are disposed inside the shell.

[0008] As a preferred embodiment of the underwater simulated explosive device of the present invention, the air explosive canister includes a jet pipe, an air explosive canister body and a sealing cap, the jet pipe is mounted on the air explosive canister, and the sealing cap is connected to the jet pipe.

[0009] As a preferred embodiment of the underwater simulated explosive device of the present invention, the bottom plate of the air explosion canister is provided with a sleeve, and the sealing cover is disposed inside the sleeve and slides inside the sleeve.

[0010] As a preferred embodiment of the underwater simulated explosive device of the present invention, the bottom of the air explosion canister is provided with an air filling and discharging port.

[0011] In a preferred embodiment of the underwater simulated explosive device of the present invention, a pilot detonation chamber is formed between the sleeve and the sealing cap.

[0012] As a preferred embodiment of the underwater simulated explosive device of the present invention, a control valve is installed on the inflation / deflation port.

[0013] As a preferred embodiment of the underwater simulated explosive device of the present invention, one end of the gas storage tank is provided with several circular holes, and an air inlet valve, an air outlet valve and a pressure sensor are installed on the gas storage tank.

[0014] As a preferred embodiment of the underwater simulated explosive device of the present invention, the wireless communication device is wirelessly connected to the remote control host via a radio or waterproof antenna.

[0015] As a preferred embodiment of the underwater simulated explosive device of the present invention, the control circuit board includes a charging and discharging circuit, a communication circuit, a main control circuit, a solenoid valve group control circuit, and a pressure detection circuit.

[0016] The beneficial effects of this invention are as follows: This invention is a non-chemical explosion technology with realistic explosion visual effects; it uses compressed air as a pilot detonator, with no open flame, no high voltage electricity, and no dust pollution, making it safe to use; the simulated explosion device can be reused, remotely controlled, and wirelessly controlled, with the controller capable of controlling multiple simulated devices simultaneously; it operates reliably, ensuring safety during service, storage, transportation, and deployment, and preventing accidental explosions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] in:

[0019] Figure 1 This is a cross-sectional view of the overall structure of an underwater simulated explosive device according to an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of the compressed air pilot detonation internal structure of an underwater simulated explosive device according to an embodiment of the present invention, showing its release state.

[0021] Figure 3 A schematic diagram of the inflation state of the air explosion canister of the underwater simulated explosive device according to an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the gas storage tank of an underwater simulated explosive device according to an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the charging and discharging circuit in the control circuit board of the underwater simulated explosive device according to an embodiment of the present invention.

[0024] Reference numerals: 101, injection pipe; 102, air explosion canister; 103, pilot detonation chamber; 104, control valve; 105, gas storage tank; 106, control circuit board; 107, battery; 108, wireless communication device; 109, housing; 110, sealing cap; 111, charging / discharging port; 112, charging hole; 113, pressure sensor; 114, gas valve; 116, sleeve; Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Example 1

[0028] Reference Figure 1-5The first embodiment of the present invention discloses an underwater simulated explosive device, characterized in that it comprises a housing 109, an air explosive canister 102, a gas storage tank 105, a control circuit board 106, a wireless communication device 108, and a battery 107. The wireless communication device 108, the control circuit board 106, and the battery 107 are mounted on the housing 109. The air explosive canister 102 is connected to the gas storage tank 105. The air explosive canister 102, the gas storage tank 105, and the control circuit board 106 are disposed inside the housing 109. The wireless communication device 108 is connected to a remote control host. Specifically, the housing 109 of the underwater simulated explosive device is a square body with a shape of 850mm × 500mm × 500mm. Its shape is milled from aluminum profile, with a round hole and a square hole at the front. The round hole serves as the outlet of the gas explosive canister, and the square hole is used to install a concealed handle. A square hole is also opened opposite the round hole for installing a concealed handle. Therefore, the device is moved by lifting and carrying it back and forth. For ease of transport, a packaging box is provided for the equipment. The equipment can be placed inside the box. Two parallel square holes are located on the right side of the casing 109 for mounting digital displays. These displays show the gas pressure values ​​inside the gas storage tank and the gas explosion tank, in MPa, with a display accuracy of 0.01. A small round hole is located not far from the square holes to allow the antenna's data receiving line to pass through, preventing data reception from being weakened within the square casing. A battery 107 and a wireless communication device 108 are also installed on the inside of the side panel.

[0029] The air explosion canister 102 includes a spray pipe 101, an air explosion canister body, and a sealing cap 110. The spray pipe 101 is installed on the air explosion canister 102, and the sealing cap 110 is connected to the spray pipe 101. During gas release, the gas is released through the spray pipe 101. The high-pressure gas rapidly passes through the pipe opening, creating a violent explosion sound. When detonated underwater, the energy of the high-pressure gas is converted into the kinetic and potential energy of the water, causing water to splash several meters high. The spray pipe 101 is installed on the air explosion canister 102, and the subsequent pipe guides the gas release. Simultaneously, during gas energy storage, it is pressed tightly against the sealing cap 110, providing a seal.

[0030] The bottom plate of the air explosive canister 102 is provided with a sleeve 116, and the sealing cap 110 is disposed inside the sleeve 116 and slides inside the sleeve 116. A pilot detonation chamber 103 is formed between the sleeve 116 and the sealing cap 110. When the pilot detonation chamber 103 is in a charged state, the air explosive canister 102 is either in a charged state or in a pre-detonation state. At this time, the sealing cap 110 is in contact with the nozzle, serving a gas storage function, and the gas will not flow out from the separation port. When the pilot detonation chamber 103 is in a released state, the air explosive canister 102 is either uncharged or in a pre-detonation state. At this time, the sealing cap 110 is separated from the nozzle, can no longer serve a gas storage function, and the gas will flow out from the separation port. The sealing cap 110 is installed inside the air explosive canister 102, forming the pilot detonation chamber 103 together with the internal structure of the air explosive canister and the tail end of the injection pipe 101. Its function is to seal the outlet during inflation, allowing high-pressure gas to be stored inside the air explosive canister. During detonation, the sealing cap 110 falls, allowing the high-pressure gas to escape from the injection pipe 101. At the bottom of the air explosive canister 102, there is a protruding cylindrical structure that houses the sealing cap 110. The sealing cap 110 covers the inner wall of the cylinder, which also serves as a sleeve 116. During inflation, the rising air pressure pushes the sealing cap 110 upwards to press against the injection pipe 101, and then inflation continues inside the canister.

[0031] During inflation: When gas is injected into the air explosion canister 102 from the bottom hole of the gas storage tank 105, a high-pressure gas environment will be formed in the pilot detonation chamber 103 in a short time. At this time, the external pressure of the sealing cover 110 is low and the internal pressure is high. The high-pressure gas will push the sealing cover 110 upward until the sealing cover 110 is completely in contact with the nozzle. At this time, the canister is sealed and the sealing cover 110 can no longer move. At this time, the gas will flow into the canister through the gap around the sealing cover 110. When the gas in the canister reaches a certain pressure, the solenoid valve will control the gas pipe to stop inflation.

[0032] During detonation: The air inlet at the bottom connects to the outside. The solenoid valve opens, and the high-pressure gas in the pilot detonation chamber 103 connects to the outside and flows out. At this time, the pressure inside the pilot detonation chamber 103 is low, while the pressure outside the sealing cover 110 is high, which will instantly press down the sealing cover 110. At this time, the sealing cover 110 separates from the gas explosion port. After separation, the high-pressure gas in the tank has a vent and rushes directly to the outside from the spray pipe 101. The high-pressure gas quickly passes through the pipe opening and forms a violent explosion sound. When detonated underwater, the energy of the high-pressure gas is converted into the kinetic and potential energy of the water, causing water to splash several meters high.

[0033] A control valve 104 is installed on the inflation / deflation port 111. The height of the sleeve 116 is higher than the height of the detonation chamber 103. One end of the gas storage tank 105 is provided with several round holes. The gas storage tank is provided with an inflation port 112, a gas valve 114, and a gas pressure sensor 113. The wireless communication device 108 is wirelessly connected to the remote control host via a radio or a waterproof antenna.

[0034] The top end face of the shell 109 has a small groove, which is used to seal and prevent water from entering during underwater operation.

[0035] The housing cover is installed on the housing 109 to seal the housing 109. It is fixed to the housing 109 by a custom sealing thread and a sealing gasket is placed on it during installation for waterproofing. The overall shape is milled from aluminum profile and the overall dimensions are 850mm×500mm×5mm.

[0036] The air explosion canister 102 is used to store gas at a certain pressure and release it through guidance. It consists of three parts: a jet pipe 101, an air explosion canister body, and a sealing cap 110, which are fixed to the bottom plate of the shell 109. The sealing cap 110 is a cylinder with a sealed top, an open bottom, and a hollow middle.

[0037] During gas release, the gas is released through the injection pipe 101. The injection pipe 101 is made of black nylon PA6, and the gas outlet diameter is 80mm. According to the compressed air explosion simulation, the opening is a circular opening with a diameter of 80mm. When buried at a depth of 0.5m underwater, this outlet can meet the requirements of underwater blasting. The injection pipe 101 is installed on the air explosion canister 102, and the pipeline behind it plays the role of guiding the gas release. At the same time, when the gas is stored, it is pressed tightly with the sealing cap 110 to play a sealing role.

[0038] The air explosion canister is used to store gas at a certain pressure for explosive energy storage. The canister is made of aluminum profile with a wall thickness of 5mm. Two support feet are installed on the canister, which are connected to the base plate of the shell 109 through the support feet, thus fixing it to the base plate. Two holes are opened at the tail. The hole on the axis is a threaded hole for connecting a three-way controlled solenoid valve and connecting it to the gas storage tank 105 for filling and detonation control. The hole on the side is for connecting a pressure sensor 113, and the pressure value of the gas stored in the canister is displayed on a digital tube.

[0039] The bottom of the air explosion canister 102 has a protruding cylindrical sleeve 116, which serves to hold a sealing cap 110. The sealing cap 110 covers the inner wall of the sleeve 116. During inflation, the rising air pressure pushes the sealing cap 110 upward to press against the injection pipe 101, and then the canister continues to be filled with air.

[0040] The sealing cap 110, made of black nylon material PA6, is installed inside the air explosive canister 102. Together with the tail end of the injection pipe 101 inside the air explosive canister, it forms the pilot detonation chamber 103. During inflation, it seals the gas outlet, allowing high-pressure gas to be stored inside the air explosive canister. During detonation, the sealing cap 110 falls, allowing the high-pressure gas to escape from the injection pipe 101.

[0041] The gas storage tank 105 is made of aluminum profile. Its internal gas storage volume is about 7 times that of the air explosion canister 102, which can fill the air explosion canister 102 at least 10 times. There are three air passages on its end face. The central air passage 112 is used to fill the air explosion canister 102. The right-side passage is connected to the air pressure sensor 113 through an air tube and displays the air pressure value on the digital tube. The upper passage is used to connect an air valve 114, which is used to fill and release gas from the gas storage tank 105.

[0042] The underwater explosion simulator is equipped with hardware electrical modules such as a wireless communication device 108, a battery 107, a control circuit board 106, and a control valve.

[0043] Example 2

[0044] This embodiment describes the control circuit board 106 and the wireless communication device 108. The wireless communication device 108 establishes a wireless connection with the remote control host through a radio and a waterproof antenna. It uses the same Ebitec LoRa wireless data transmission radio and Beidou locator as the remote control host. This radio supports a maximum communication distance of 16km. The battery is a 12V / 6000mAh rechargeable lithium battery, which powers all electrical equipment in the battlefield underwater explosion simulator.

[0045] The control circuit board 106 mainly includes a charging and discharging circuit, a communication circuit, a main control circuit, a solenoid valve group control circuit, and a pressure detection circuit, which realize the functions of internal pressure control and remote communication of the battlefield underwater explosion simulator.

[0046] The underwater explosion simulator consists of a gas storage tank 105, a control valve 104, a pilot detonation chamber 103, an air explosion canister 102, a jet pipe 101, a wireless communication device 108, a battery 107, and a control circuit board 106. The air explosion canister 102 includes a jet pipe 101, an air explosion canister body, and a sealing cap 110. The jet pipe 101 is mounted on the air explosion canister 102, and the sealing cap 110 is connected to the jet pipe 101. A sleeve 116 is provided on the bottom plate of the air explosion canister 102, and the sealing cap 110 is disposed within the sleeve 116 and slides within the sleeve 116. An inflation / deflation port 111 is provided at the bottom of the air explosion canister 102.

[0047] The battlefield underwater explosion simulator has a square shape with a length ≤900mm, width ≤800mm, height ≤800mm, and overall weight ≤60kg. It uses compressed air pilot detonation. By releasing the internal air pressure of the pilot detonation chamber 103, the entire air explosion container 102 is detonated. After releasing the pilot detonation chamber 103, it is immediately refilled with air. The sealing cap 110 automatically blocks the injection pipe 101 to achieve a seal, allowing for the next detonation. The simulation mechanism uses compressed air pilot detonation, a non-chemical explosion technology, with no open flame, no high-voltage electricity, and no dust pollution, making it safe to use.

[0048] A simulation model of a compressed air explosion was constructed. This simulation employed a three-dimensional full model calculation. An initial water area and an underwater explosion simulator were established based on the actual problem requirements. The analysis region was set as a cylinder with a radius of 5m, specifically divided into two parts with heights of 0.5m and 10m respectively. These can be considered as the initial fluid domain at a height of 0.5m and the air domain at a height of 10m. The underwater explosion simulator was set as a cylinder with a diameter of 80mm and a height of 200mm. In this analysis, the high-pressure gas ejection outlet was a circular opening with a diameter of 80mm. This can be modified in subsequent studies, by burying it at a depth of 0.5m underwater.

[0049] The analysis of the simulation model materials primarily focuses on seawater, whose material behavior can be described using equations of state. This invention employs the Us-Up equations of state to describe the flow of water, accurately simulating the motion of water under shock wave loads. The specific form of the equations of state is as follows:

[0050] p = p H (1-Γ0η / 2)+Γ0ρ0E m

[0051] In the formula: Γ0 is the material constant; η is the nominal volumetric compressive strain, expressed as η = 1 - ρ0 / ρ; ρ0 is the reference density; E m p is the internal energy per unit mass. H For Hugoniot pressure, its expression is as follows:

[0052]

[0053] In the formula, C0 and S are related to the linear impact velocity Us and the particle velocity Up:

[0054] U s =C0+SU p

[0055] The parameters of the equation of state for water are shown in the table below.

[0056] Table 1 shows the parameters of the equation of state for water.

[0057] ρ / (kg·m) <![CDATA[C0 / (m·s-1)]]> S <![CDATA[Γ0]]> 1024 1450 1.75 0.28

[0058] The gas in the gas tank 105 is filled by an air compressor. During filling, connect the filling hose to the gas tank, rotate the air compressor pointer to 300 bar, and press the air compressor switch to start the filling operation. When the valve pointer reaches 300 bar, turn off the air compressor power to stop filling. Close the gas cylinder valve until the pressure gauge on the pressure relief valve on the filling hose returns to zero. Completely disconnect the filling hose, disconnect the air compressor from the gas cylinder filling line, and remove the air compressor. When submerged in water, check the electrical status: rotate the solenoid valve connector into the control box. If the voltmeter voltage is below 24V, charge the valve. After checking, unscrew the solenoid valve connector.

[0059] Check the cylinder pressure to ensure the pressure reducing valve is closed. Connect the pressure reducing valve; the gauge needle will rotate rapidly, indicating the cylinder pressure. Once the needle stabilizes, turn the pressure reducing valve to the closed position. The work site should be a shallow area with a water depth of approximately 1 meter, near the shore. The bottom should be as flat as possible; use tools to level it if necessary. During operation, transport the underwater explosion simulator to the shore and secure it within a square frame. To facilitate sinking the underwater explosive, attach weights such as bricks to the corners. Slowly open the pressure reducing valve knob. The cylinder will then fill the metal pressure tank. Observe the pressure gauge at the outlet of the pressure reducing valve; when the reading is between 0.8-1.0 MPa, close the pressure reducing valve until there is no more filling sound.

[0060] There are two triggering methods for detonation: one is physical triggering, such as manually contacting the trigger lever; the other is wireless remote control triggering by the programmable host. This invention uses wireless remote control triggering. Connect the remote control host antenna, and connect the Beidou antenna and radio antenna to the remote control host antenna interface. Press the emergency release knob on the remote control host, open the safety switch, the remote control host powers on, searches for the underwater explosion simulator, and sets the control mode. For the first detonation operation, turn off the remote control host safety, release the emergency release knob, and press and hold the detonation button for 3 seconds to detonate. When repeating the detonation operation, after the first detonation, reset the control mode and continue detonating.

[0061] In summary, this invention achieves pilot detonation of the entire air explosive canister 102 by releasing the internal air pressure of the pilot detonation chamber 103. After releasing the pilot detonation chamber, it is immediately refilled with gas. The sealing cap 110 automatically blocks the injection pipe to achieve a seal, and the next detonation can be carried out. It is a non-chemical explosion technology, with no open flame, no high voltage electricity, no dust pollution, and is safe to use.

[0062] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0063] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An underwater simulated explosive device, characterized in that: The device includes a housing (109), an air explosion canister (102), a gas storage tank (105), a control circuit board (106), a wireless communication device (108), and a battery (107). The wireless communication device (108), the control circuit board (106), and the battery (107) are mounted on the housing (109). The air explosion canister (102) is connected to the gas storage tank (105). The air explosion canister (102), the gas storage tank (105), and the control circuit board (106) are disposed inside the housing (109).

2. The underwater simulated explosive device according to claim 1, characterized in that: The air explosion canister (102) includes a spray pipe (101), an air explosion canister body, and a sealing cap (110). The spray pipe (101) is installed on the air explosion canister (102), and the sealing cap (110) is connected to the spray pipe (101).

3. The underwater simulated explosive device according to claim 2, characterized in that: The bottom plate of the air explosion canister (102) is provided with a sleeve (116), and the sealing cap (110) is disposed inside the sleeve (116) and slides inside the sleeve (116).

4. The underwater simulated explosive device according to claim 3, characterized in that: The bottom of the air explosion canister 102 is provided with an air filling / discharging port (111).

5. The underwater simulated explosive device according to claim 3, characterized in that: A pilot detonation chamber (103) is formed between the sleeve (116) and the sealing cap (110).

6. The underwater simulated explosive device according to claim 1, characterized in that: A control valve (104) is installed on the inflation / deflation port (111).

7. The underwater simulated explosive device according to claim 1, characterized in that: The gas storage tank (105) has several round holes at one end, and the gas storage tank is equipped with an inflation port (112), a gas valve (114) and a pressure sensor (113).

8. The underwater simulated explosive device according to claim 2, characterized in that: The wireless communication device (108) is wirelessly connected to the remote control host via a radio or waterproof antenna.

9. The underwater simulated explosive device according to claim 1, characterized in that: The control circuit board (106) includes a charging and discharging circuit, a communication circuit, a main control circuit, a solenoid valve group control circuit, and a pressure detection circuit.

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