Explosive wave simulation device and method based on gas combustion driving

Abstract

The invention discloses an explosive wave simulation device and method based on gas combustion driving, and solves the problems that in the prior art, electric heating energy consumption is large, a gas detonation method generates detonation waves and an extremely high pressure peak value, the waveform of shock waves is affected, and pressure bearing of equipment is challenged. The explosive wave simulation device based on gas combustion driving comprises a combustion driving section, a contraction and expansion section, a driven section, an ignition device arranged on the combustion driving section and a diaphragm arranged between the driving section and the contraction and expansion section. Combustible mixed gas is contained in the combustion driving section, a shape adjusting cushion block is embedded in one end of the combustion driving section, the radial sectional area of the inner space of the shape adjusting cushion block is sequentially increased from one end to the other end in the axial direction, and the other end of the combustion driving section is connected with the inlet end of the contraction and expansion section. An ignition opening is formed in the combustion driving section; the outlet end of the contraction and expansion section is connected with the opening end of the driven section; an ignition head of the ignition device penetrates through the ignition opening; and the driven section is used for installing to-be-tested equipment.

Description

Technical Field

[0001] The invention relates to a blast wave simulation device, and in particular to a blast wave simulation device and method based on gas combustion drive. Background Art

[0002] The blast wave simulator is a test device capable of generating and controlling shock waves, and can be used to study the destructive effects of shock waves on buildings, vehicles, and other structures. The blast wave simulator consists of a high-pressure section (also known as a driving section), a contraction-expansion section, and a driven section. A diaphragm is provided between the high-pressure section and the contraction-expansion section, separating the high-pressure gas from the low-pressure gas. When the blast wave simulator is operating, the diaphragm ruptures instantly, and the high-pressure gas flows out of the driving section. After accelerating through the contraction-expansion section, it enters the driven section and compresses the driven gas to form a compression wave, which evolves and eventually develops into a planar shock wave.

[0003] How to achieve simultaneous simulation of shock wave overpressure and dynamic pressure processes is a core issue that needs to be addressed in explosion wave simulation devices. In the existing technology, shock wave overpressure simulation can generally be achieved through the shape design of the driving section. Common shape design techniques include: adding hollow baffles to the driving section, designing a variable cross-section driving section, and replacing a single driving tube with multiple small-diameter tubes of different lengths. However, during the simulation of the shock wave pressure process, since the driving gas in the high-pressure section is a room-temperature gas, the density at the contact surface between the driving gas and the driven gas is discontinuous, resulting in a discontinuous shock wave pressure process. Therefore, there is a problem of abnormal increase in the dynamic pressure process of the shock wave. The current main solution is to control the gas density by heating the driving gas on the basis of overpressure simulation to achieve shock wave pressure simulation.

[0004] Currently, the mainstream methods for generating high-temperature, high-pressure gas are electric heating and gas detonation. The electric heating method uses a heating system to heat the driving gas, generating high-temperature, high-pressure driving gas. However, this method has the following major problems: First, the heating system has a limited lifespan and its configuration is relatively complex, making it unsuitable for larger driving sections. Second, the required driving gas temperature increases with the peak shock wave. The greater the temperature difference between the gas and the ambient temperature, the faster the heat loss efficiency. As the simulated shock wave overpressure peak increases, the required heating power increases dramatically, consuming a large amount of energy and requiring lengthy preparation times. The gas detonation method generates high-temperature, high-pressure driving gas by detonating an explosive gas within the driving section. However, the detonation process generates a detonation wave, which affects the shock wave waveform and reduces the duration of the shock wave. Furthermore, the detonation wave generates extremely high pressure peaks, posing a significant challenge to the pressure tolerance of the equipment. Summary of the Invention

[0005] The purpose of the present invention is to solve the technical problems in the prior art that the electric heating method consumes a lot of energy, and the gas detonation method will produce detonation waves and extremely high pressure peaks, which affect the shock wave waveform and bring challenges to the pressure resistance of the equipment. By providing a gas combustion-driven explosion wave simulation device and method.

[0006] The concept of this invention is to generate high-temperature, high-pressure driving gas by burning a combustible gas. This high-temperature, high-pressure driving gas breaks through the diaphragm, passes through the contraction and expansion section, and enters the driven section to generate a shock wave. This solves the technical problems of electric heating methods, which consume a lot of energy and have long preparation times, and detonation technology, which produces a detonation wave that affects the shock wave waveform, shortens the duration of action, and significantly challenges the pressure limit of the equipment.

[0007] In order to achieve the above objectives and complete the above inventive concept, the technical solution adopted by the present invention is:

[0008] A gas combustion-driven explosion wave simulation device comprises: a straight cylindrical driving section, a hollow trumpet-shaped contraction-expansion section, a hollow driven section, and a diaphragm disposed between the driving section and the contraction-expansion section. The device is unique in that: the driving section is a combustion driving section, which is used to accommodate a combustible mixed gas, and a shape-adjusting pad is embedded in one end of the combustion driving section. The shape-adjusting pad is used to change the radial cross-sectional area of ​​the internal space of the combustion driving section so that it increases axially from one end to the other end. The other end of the combustion driving section is connected to the inlet end of the contraction-expansion section. An ignition port is provided near the other end of the combustion driving section.

[0009] The outlet end of the contraction-expansion section is connected to the open end of the driven section;

[0010] The explosion wave simulation device based on gas combustion drive also includes an ignition device arranged on the combustion drive section, wherein the ignition head of the ignition device passes through the ignition port and is located in the combustion drive end, and is used to ignite the combustible mixed gas in the combustion drive section;

[0011] The interior of the driven section is used for installing the device to be tested.

[0012] Furthermore, one end of the combustion drive section is sealed by an end cover, and an air injection port and an air exhaust port are provided near the other end;

[0013] The gas injection port is used to inject gas;

[0014] The exhaust port is used for gas discharge;

[0015] The ignition end of the ignition device extends into the interior of the combustion drive section through the ignition port;

[0016] Definition: The axial distance between the ignition port and the diaphragm is L1, and the axial distance between the end cover and the diaphragm is L2, then: L1 / L2≤0.1.

[0017] Furthermore, there are four ignition ports, and the four ignition ports are evenly distributed along the circumference of the tube wall of the combustion drive section.

[0018] Furthermore, the shape-adjusting pad is a cylindrical structure, the outer diameter of which is adapted to the inner diameter of the combustion drive section, and the inner diameter of the shape-adjusting pad increases sequentially from one end to the other end of the combustion drive section.

[0019] Furthermore, the regulating pad is a multi-segment structure, each segment is an annular structure, and the inner diameter increases sequentially from one end to the other end of the combustion drive segment.

[0020] Furthermore, a pad positioning ring is circumferentially provided on the inner wall surface of the combustion drive section, and the shape adjustment pad is limitedly located between the pad positioning ring and the end cover;

[0021] A pressure monitoring device is provided on the inner wall surface of the combustion drive section.

[0022] At the same time, the present invention also provides a method for simulating explosion waves based on gas combustion drive, which uses the above-mentioned explosion wave simulation device based on gas combustion drive; the special feature of the method is that it includes the following steps:

[0023] Step 1: Based on the peak values ​​of the simulated shock wave overpressure and dynamic pressure, determine the pressure P1 that the combustion drive section needs to reach when the membrane ruptures. Based on the decay history of the overpressure and dynamic pressure, determine the initial pressure P0 in the combustion drive section and the required shape of the combustion drive section. P1 and P0 are obtained through numerical simulation optimization and experimental correction.

[0024] Step 2: Obtain the device to be tested, determine the shape of the shape adjustment pad based on the desired shape of the combustion drive segment obtained in Step 1, and securely install the shape adjustment pad inside one end of the combustion drive segment. The combustion drive segment is then sealed, and the diaphragm is installed. The device to be tested is then installed inside the driven segment.

[0025] Step 3: Obtain a combustible mixed gas and fill the combustible mixed gas into the combustion drive section until the gas pressure in the combustion drive section reaches a preset initial pressure value P0;

[0026] Step 4: Obtain an ignition device, insert the ignition head of the ignition device into the combustion drive section through the ignition port, and start the ignition device. If ignition is successful, the combustible mixed gas inside the combustion drive section is ignited, and then step 5 is executed; if ignition is unsuccessful, step 6 is executed;

[0027] Step 5: After the combustible mixed gas burns, the gas in the combustion drive section is heated and the pressure increases. If the gas pressure reaches the diaphragm rupture pressure value P1, the diaphragm ruptures, and the high-temperature and high-pressure gas in the combustion drive section passes through the contraction and expansion section and enters the driven section, thereby generating a shock wave. The shock wave test is performed on the test equipment, completing the explosion wave simulation based on gas combustion drive. If the gas pressure does not reach the diaphragm rupture pressure value P1, step 6 is executed.

[0028] Step 6. Let the gas combustion-driven explosion wave simulation device stand for a preset time. After the standing time is completed, the residual gas in the combustion-driven section is discharged, and then non-combustible gas or air is filled into the combustion-driven section to flush the residual combustible mixed gas. After the flushing is completed, the ignition device is checked and processed accordingly, or the initial pressure value P0 of the combustible mixed gas or the ratio of the combustible mixed gas is adjusted, and then return to step 3 until the gas combustion-driven explosion wave simulation is completed.

[0029] Furthermore, in step 3, the combustible mixed gas includes hydrogen, oxygen and nitrogen, wherein the volume proportion of hydrogen is 7%-11%, and the hydrogen-oxygen equivalence ratio Ψ is less than 1 / 4.

[0030] Furthermore, step 6 specifically includes the following steps:

[0031] 6.1. Allow the gas combustion-driven explosion wave simulation device to stand for a preset time;

[0032] 6.2. After the static state is completed, open the exhaust port on the combustion drive section to discharge the residual gas in the combustion drive section into the atmosphere. Keep the exhaust port open and at the same time open the gas injection port on the combustion drive section to fill the combustion drive section with non-combustible gas or air to flush the residual combustible mixed gas;

[0033] 6.3. After flushing is completed, close the exhaust port, keep the gas injection port open, check and handle the ignition device accordingly, or adjust the initial pressure value P0 of the combustible mixture gas or the ratio of the combustible mixture gas, and then return to step 2 until the explosion wave simulation based on gas combustion is completed.

[0034] Furthermore, in step 6.1, the preset time is 5 to 7 minutes.

[0035] Compared with the prior art, the present invention has the following beneficial technical effects:

[0036] 1. The present invention's explosion wave simulation device and method, based on gas combustion drive, offers a wider range of combustible gas ratio limits and a wider temperature range for the driving gas compared to existing detonation-driven technologies, facilitating the simulation of shock waves of varying intensities. Furthermore, detonation technology generates detonation waves in the driving section, affecting the shock wave waveform and reducing the duration of the shock wave's action. Furthermore, detonation waves can produce extremely high pressure peaks, posing a significant challenge to the equipment's pressure tolerances. Combustion-driven systems, on the other hand, place lower pressure requirements on the driving section equipment, and the flame propagation speed is far less than the speed of sound. The pressure within the driving tube changes synchronously, preventing compression waves and contributing to the formation of a stable shock wave flow field.

[0037] 2. The present invention utilizes a gas combustion-driven explosion wave simulation device and method. Compared to existing electric heating technologies, gas combustion rapidly generates high-temperature, high-pressure driving gas. Combustion heating is accompanied by an increase in gas pressure, requiring a low initial gas pressure, eliminating the need for a high-pressure compressor and significantly reducing gas consumption. The time from ignition to diaphragm rupture only takes a few hundred milliseconds to a few seconds, resulting in highly efficient experiments.

[0038] 3. The present invention is based on a gas combustion-driven explosion wave simulation device with axially evenly distributed ignition ports. After ignition, a flame front is formed that propagates toward the end cover of the combustion drive section. The ratio L1 / L2 is set to be less than or equal to 0.1, which can ensure that the gas near the diaphragm is completely burned and avoid the influence of turbulent combustion or re-ignition after the membrane ruptures on the shock wave flow field.

[0039] 4. The present invention is based on a method for simulating explosion waves driven by gas combustion. By adjusting the initial pressure value P0 of the combustible mixed gas filled in the combustion driving section, the driving gas density can be controlled. In the driven test area, the density discontinuity at the contact surface between the driving gas and the driven gas can be eliminated, thereby realizing the simulation of shock wave pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic structural diagram of an embodiment of a gas combustion driven explosion wave simulation device according to the present invention;

[0041] Figure 2 This is a cross-sectional view of the ignition port of an embodiment of a gas combustion driven explosion wave simulation device of the present invention;

[0042] Figure 3 This is a logic block diagram of an embodiment of a method for simulating explosion waves driven by gas combustion according to the present invention.

[0043] The following are the descriptions of the reference numerals:

[0044] 1. Combustion drive section; 11. End cover; 12. Shape adjustment pad; 13. Pad positioning ring; 14. Air injection port; 15. Exhaust port; 16. Ignition port; 161. First ignition port; 162. Second ignition port; 163. Third ignition port; 164. Fourth ignition port; 17. Pressure monitoring device; 2. Diaphragm; 3. Contraction and expansion section; 4. Driven section. DETAILED DESCRIPTION

[0045] To make the purpose, advantages and features of the present invention more clear, the following Figure 1-3 The specific embodiments further describe in detail the explosion wave simulation device and method based on gas combustion drive proposed by the present invention.

[0046] A gas combustion driven explosion wave simulation device includes: a combustion driving section 1, an end cover 11, a shape adjustment pad 12, a pad positioning ring 13, a gas injection port 14, an exhaust port 15, an ignition port 16, a pressure monitoring device 17, a diaphragm 2, a contraction and expansion section 3, and a driven section 4.

[0047] The main body of the combustion drive section 1 is a straight tube of equal cross-section, with an end cover 11 provided on the left side. The end cover 11 is connected to the combustion drive section 1 through a flange. The other end of the combustion drive section 1 is connected to the inlet end of the contraction-expansion section 3, and the outlet end of the contraction-expansion section 3 is connected to the driven section 4. A diaphragm 2 is provided between the combustion drive section 1 and the contraction-expansion section 3, and the diaphragm 2 is installed at the connection between the combustion drive section 1 and the contraction-expansion section 3 through a clamp.

[0048] A shape-adjusting pad 12 is disposed within the combustion drive section 1. The inner diameter of the shape-adjusting pad 12 varies, while its outer diameter is equal to the inner diameter of the combustion drive section 1. The inner diameter of the shape-adjusting pad 12 gradually increases from the end cap 11 side to the contraction-expansion section 3 side. The variation in the inner diameter of the shape-adjusting pad 12 is adjusted based on the waveform of the simulated target shock wave to obtain the specific shape of the shape-adjusting pad 12. The shape-adjusting pad 12 may be an integrally formed cylindrical structure. In this embodiment, the inner wall of the shape-adjusting pad 12 is a multi-segment structure with a stepped structure. The section adjacent to the end cap 11 is a solid cylindrical structure, while the remaining sections are annular structures. A pad locating ring 13 is disposed within the combustion drive section 1 to position the shape-adjusting pad 12. After the end cap 11 is tightened, the shape-adjusting pad 12 cannot move axially. The pad locating ring 13 can be connected to the inner wall of the combustion drive section 1 by welding, or it can be directly cut from the inner wall of the combustion drive section 1 by integral molding. The combustion drive section 1 is provided with an air injection port 14 and an exhaust port 15 , and the air injection port 14 and the exhaust port 15 are respectively provided with a first stop valve and a second stop valve.

[0049] The combustible mixture is filled into the combustion driving section 1 through the gas injection port 14 after being premixed in advance. The combustible mixture includes hydrogen, oxygen and nitrogen (hydrogen, oxygen and nitrogen are taken as an example in this example). The volume ratio of hydrogen should be controlled within 7%-11%, and the hydrogen-oxygen equivalence ratio Ψ <1 / 4. If the hydrogen ratio is too high, the combustion speed will be too fast, which will generate a compression wave in the combustion driving section 1. If the hydrogen ratio is too low, the combustion will be unstable, and the flame will be easily extinguished. The combustible gas in the combustible mixture can also be selected as an alkane, and the non-reactive gas in the combustible mixture can also be selected as helium. Considering the economy, nitrogen is the best.

[0050] The combustion driving section 1 is provided with an ignition port 16. The distance between the end cover 11 and the diaphragm 2 is defined as L2, and the distance between the ignition port 16 and the diaphragm 2 is defined as L1, and L1 / L2≤0.1. The ignition device includes a high-voltage capacitor, an ignition switch and an ignition head, and the ignition head is installed in the ignition port. The ignition device is a prior art, and will not be described in detail here. Figure 2 is Figure 1 The cross-sectional view of the ignition port position is shown in FIG. 6. The combustion driving section 1 is uniformly distributed with a first ignition port 161, a second ignition port 162, a third ignition port 163 and a fourth ignition port 164 on the circumferential direction of the pipe wall. The ignition ports are uniformly distributed in the axial direction, and form a flame array that propagates to the end cover 11 of the combustion driving section 1 after ignition. The farther away from the ignition position, the lower the temperature, and the more residual unburned gas. By setting the ratio between L1 and L2 to be less than or equal to 0.1, it can be ensured that the gas near the diaphragm is completely burned, and the influence of turbulent combustion or re-ignition on the shock wave flow field after the diaphragm is broken is avoided.

[0051] The combustion driving section 1 is provided with a pressure monitoring table 17 for monitoring the pressure.

[0052] The specific implementation method is as follows:

[0053] Step 1: According to the peak value of the simulated shock wave overpressure and dynamic pressure, the pressure P1 required by the combustion driving section 1 when the diaphragm is broken is determined. According to the decay process of the overpressure and the dynamic pressure, the initial pressure P0 in the combustion driving section 1 and the required shape of the combustion driving section 1 are determined. P1 and P0 are obtained by numerical simulation optimization and experimental correction;

[0054] Step 2: Obtain the equipment to be tested, select the appropriate shape adjusting pad 12 according to the required shape of the combustion driving section 1 obtained in step 1, install it into the combustion driving section 1, and install the end cover 11; select the diaphragm 2 with a breaking pressure of P1, and install it between the combustion driving section 1 and the contraction-expansion section 3; install the equipment to be tested into the driven section 4;

[0055] Step 3: Keep the second stop valve closed, open the first stop valve, and fill the combustion drive section 1 with a combustible mixed gas through the gas injection port 14 to an initial pressure value P0. After the filling is completed, close the first stop valve. The combustible mixed gas includes hydrogen, oxygen and nitrogen, wherein the volume proportion of hydrogen is 7%-11%, and the hydrogen-oxygen equivalence ratio Ψ<1 / 4.

[0056] Step 4: Charge the high-voltage capacitor, turn off the ignition switch, and ignite the combustible mixed gas with the ignition head. If the ignition is successful, the combustible mixed gas inside the combustion drive section 1 is ignited, and then step 5 is executed; if the ignition is unsuccessful, step 6 is executed.

[0057] Step 5: After the combustible mixed gas is burned, the gas is heated and its pressure increases. If the gas pressure reaches the rupture pressure value P1 of the diaphragm 2, the diaphragm 2 ruptures, and the high-temperature and high-pressure gas in the combustion driving section 1 passes through the contraction and expansion section 3 and enters the driven section 4, thereby generating a shock wave. The shock wave test is performed on the test equipment, completing the explosion wave simulation based on gas combustion drive. If the gas pressure does not reach the rupture pressure value P1 of the diaphragm 2, step 6 is executed.

[0058] Step 6: Let the gas combustion-driven explosion wave simulation device stand for 5 to 7 minutes. After standing, open the second stop valve on the exhaust port 15 to discharge the residual gas in the combustion-driven section 1 into the atmosphere. Then keep the second stop valve open, open the first stop valve, and fill nitrogen or air into the combustion-driven section 1 to flush the residual combustible mixed gas. After the flushing is completed, check and process the ignition device accordingly, or adjust the initial pressure value P0 of the combustible mixed gas or the ratio of the combustible mixed gas, and then return to step 3 until the gas combustion-driven explosion wave simulation is completed.

[0059] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0061] In the description of the present invention, it should be noted that the terms “first” and “second” are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A blast wave simulation device driven by gas combustion, comprising: A straight cylindrical driving section, a hollow trumpet-shaped contraction-expansion section (3), a hollow driven section (4), and a diaphragm (2) arranged between the driving section and the contraction-expansion section (3); characterized in that: the driving section is a combustion driving section (1), the combustion driving section (1) is used to accommodate a combustible mixed gas, a shape adjustment pad (12) is nested inside one end of the combustion driving section, and the shape adjustment pad (12) is used to change the radial cross-sectional area of ​​the internal space of the combustion driving section (1) to increase in sequence from one end to the other end in the axial direction, the other end of the combustion driving section (1) is connected to the inlet end of the contraction-expansion section (3); an ignition port (16) is provided near the other end of the combustion driving section (1); The outlet end of the contraction-expansion section (3) is connected to the open end of the driven section (4); The explosion wave simulation device based on gas combustion drive also includes an ignition device arranged on the combustion drive section (1), wherein an ignition head of the ignition device passes through an ignition port (16) and is located in the combustion drive end (1), and is used to ignite the combustible mixed gas in the combustion drive section (1); The interior of the driven section (4) is used for installing the device to be tested.

2. The explosion wave simulation device based on gas combustion drive according to claim 1 is characterized in that: One end of the combustion drive section (1) is sealed by an end cover (11), and a gas injection port (14) and an exhaust port (15) are provided near the other end; The gas injection port (14) is used for injecting gas; The exhaust port (15) is used for gas discharge; The ignition end of the ignition device extends into the interior of the combustion drive section (1) through the ignition port (16); Definition: The axial distance between the ignition port (16) and the diaphragm (2) is L1, and the axial distance between the end cover (11) and the diaphragm (2) is L2, then: L1 / L2≤0.

1.

3. The explosion wave simulation device based on gas combustion drive according to claim 2, characterized in that: There are four ignition ports (16), and the four ignition ports (16) are evenly distributed along the circumference of the tube wall of the combustion drive section (1).

4. The explosion wave simulation device based on gas combustion drive according to claim 2, characterized in that: The shape adjustment pad (12) is a cylindrical structure, and its outer diameter is adapted to the inner diameter of the combustion drive section (1). The inner diameter of the shape adjustment pad (12) increases sequentially from one end to the other end of the combustion drive section (1).

5. The explosion wave simulation device based on gas combustion drive according to claim 2, characterized in that: The regulating pad (12) is a multi-segment structure, each segment is an annular structure, and the inner diameter increases sequentially from one end to the other end of the combustion drive segment (1).

6. The explosion wave simulation device based on gas combustion drive according to claim 5, characterized in that: A pad locating ring (13) is circumferentially provided on the inner wall surface of the combustion drive section (1), and the shape adjustment pad (12) is limitedly located between the pad locating ring (13) and the end cover (11); A pressure monitoring device (17) is provided on the inner wall surface of the combustion drive section (1).

7. A method for simulating explosion waves driven by gas combustion, using the explosion wave simulation device driven by gas combustion according to claim 1; characterized in that: The following steps are involved: Step 1: According to the peak values ​​of the simulated shock wave overpressure and dynamic pressure, the pressure P1 that the combustion driving section (1) needs to reach when the membrane is broken is determined; according to the attenuation history of the overpressure and dynamic pressure, the initial pressure P0 in the combustion driving section (1) and the required shape of the combustion driving section (1) are determined; P1 and P0 are obtained by numerical simulation optimization and experimental correction; Step 2: Obtain the device to be tested, determine the shape of the shape-adjusting pad (12) according to the required shape of the combustion drive section (1) obtained in step 1, and fix the shape-adjusting pad (12) of the determined shape inside one end of the combustion drive section (1), then seal the combustion drive section (1), and then install the diaphragm (2), and install the device to be tested inside the driven section (4); Step 3: Obtain combustible mixed gas, and fill the combustible mixed gas into the combustion drive section (1) until the gas pressure in the combustion drive section (1) reaches a preset initial pressure value P0; Step 4: Obtain an ignition device, insert the ignition head of the ignition device into the combustion drive section (1) through the ignition port (16), start the ignition device, and if the ignition is successful, ignite the combustible mixed gas inside the combustion drive section (1), and then execute step 5; if the ignition is unsuccessful, execute step 6; Step 5: After the combustible mixed gas is burned, the gas in the combustion driving section (1) is heated and the pressure increases. If the gas pressure value reaches the membrane rupture pressure value P1 of the diaphragm (2), the diaphragm (2) is broken, and the high-temperature and high-pressure gas in the combustion driving section (1) passes through the contraction and expansion section (3) and enters the driven section (4), thereby generating a shock wave. The shock wave test is performed on the test equipment to complete the explosion wave simulation based on gas combustion drive; if the gas pressure does not reach the membrane rupture pressure value P1 of the diaphragm (2), step 6 is executed; Step 6: The explosion wave simulation device based on gas combustion drive is allowed to stand for a preset time. After the standing time is completed, the residual gas in the combustion drive section (1) is discharged, and then non-combustible gas or air is filled into the combustion drive section (1) to flush the residual combustible mixed gas. After the flushing is completed, the ignition device is checked and processed accordingly, or the initial pressure value P0 of the combustible mixed gas or the ratio of the combustible mixed gas is adjusted, and then the process returns to step 3 until the explosion wave simulation based on gas combustion drive is completed.

8. The method for simulating explosion waves based on gas combustion drive according to claim 7, characterized in that: In step 3, the combustible mixed gas includes hydrogen, oxygen and nitrogen, wherein the volume proportion of hydrogen is 7%-11%, and the hydrogen-oxygen equivalence ratio Ψ is less than 1 / 4.

9. The method for simulating explosion waves based on gas combustion drive according to claim 7, characterized in that: Step 6 Specific The following steps are involved: 6.

1. Allow the gas combustion-driven explosion wave simulation device to stand for a preset time; 6.

2. After the standing period is completed, open the exhaust port (15) on the combustion drive section (1) to discharge the residual gas in the combustion drive section (1) into the atmosphere, keep the exhaust port (15) open, and at the same time open the gas injection port (14) on the combustion drive section (1) to fill the combustion drive section (1) with non-combustible gas or air to flush the residual combustible mixed gas; 6.

3. After the flushing is completed, close the exhaust port (15), keep the gas injection port (14) open, check and handle the ignition device accordingly, or adjust the initial pressure value P0 of the combustible mixed gas or the ratio of the combustible mixed gas, and then return to step 3 until the explosion wave simulation based on gas combustion drive is completed.

10. The method for simulating explosion waves based on gas combustion drive according to claim 9, characterized in that: In step 6.1, the preset time is 5 to 7 minutes.

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