Shock wave testing device and shock wave testing method capable of controlling waveform characteristics

Abstract

The present application relates to a controllable waveform characteristic shock wave test device and a shock test method, comprising a gas storage tank and a gas outlet pipe, the gas storage tank defines one or more gas storage cavities, the gas storage cavities are used for storing high-pressure gas, the gas outlet pipe defines a gas outlet passage, the outlet of the gas outlet passage is used for connecting the measured object, the shock wave test device further comprises a plurality of shunt pipes, a plurality of electromagnetic valves and a main controller, the plurality of shunt pipes are connected in parallel, the inlets of the plurality of shunt pipes are connected to the outlets of the gas storage cavities, the outlets of the plurality of shunt pipes are connected to the outlet of the same gas outlet passage, the electromagnetic valves correspond to the shunt pipes one by one, the electromagnetic valves are used for controlling the on-off of the corresponding shunt pipes, and the main controller is used for controlling the opening and closing of the plurality of electromagnetic valves. The present application adjusts and controls the number and time of different electromagnetic valves to be turned on to adjust and control the waveform diagram of the shock wave, so as to simulate the shock wave of different scenes, and to detect the protection capability of the anti-explosion valve under the action of the shock wave of different waveforms.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of impact test, in particular to an impact wave test device with controllable wave form characteristics and an impact wave test method. BACKGROUND

[0002] The anti-blast valve is used to resist the explosion outside the building, block the shock wave from the outside into the room, and protect the safety of personnel. In order to evaluate the anti-blast ability of the anti-blast valve, the existing technical solution is to use high-pressure gas to generate a shock wave to test the anti-blast valve.

[0003] Referring to Figure 1 and Figure 2 , the gas storage tank 11 is used to store high-pressure gas, the left side of the gas storage tank 11 is communicated with the gas inlet pipe 12, the right side of the gas storage tank 11 is communicated with the gas outlet pipe 13, the rupture disc mounting structure 14 is arranged on the gas outlet pipe 13, the rupture disc mounting structure 14 is used to fix the rupture disc on the pipe opening of the gas outlet pipe 13, when the pressure inside the gas storage tank 11 exceeds the rated pressure of the rupture disc, the rupture disc will break, the high-pressure gas in the gas storage tank 11 is discharged through the gas outlet pipe 13, thereby forming a shock wave near the gas outlet, so as to test the anti-blast ability of the anti-blast valve through the shock wave.

[0004] The impulse is equal to the integral of the force with respect to time, in the case of a certain shock wave pressure, the longer the time of the shock wave acting on the anti-blast valve, the greater the impulse of the shock wave on the anti-blast valve, and the greater the destructive power. The rupture of the rupture disc is used to control the discharge of high-pressure gas, which cannot freely regulate and control the wave form of the shock wave generated by the high-pressure gas during the release process, therefore, the existing technical solution can only detect the protection ability of the anti-blast valve under the action of instantaneous shock wave, and cannot detect the protection ability of the anti-blast valve under different wave forms. Especially when the control requirements of the impulse of the existing standard need to be met, it is necessary to replace different rupture discs and adjust the pressure of the gas storage tank for a long time, so as to complete it. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is how to regulate and control the wave form of the shock wave, so as to simulate the shock wave of different scenes, so as to detect the protection ability of the anti-blast valve under the action of the shock wave with different wave forms.

[0006] In order to solve the above technical problems, the present application provides an impact wave test device with controllable wave form characteristics, which comprises a gas storage tank and a gas outlet pipe, the gas storage tank defines a plurality of gas storage cavities, the gas storage cavities are used to store high-pressure gas, the gas outlet pipe defines a gas outlet passage, the outlet of the gas outlet passage is used to connect the measured object, and the impact wave test device further comprises:

[0007] A shunt assembly comprising a plurality of shunt pipes, the plurality of shunt pipes being arranged in parallel, an inlet of the plurality of shunt pipes being connected to an outlet of the gas storage cavity, an outlet of the plurality of shunt pipes being connected to an inlet of the gas outlet channel;

[0008] A on-off assembly comprising a plurality of electromagnetic valves, the electromagnetic valves corresponding to the shunt pipes one by one, the electromagnetic valves being used to control on-off of the corresponding shunt pipes;

[0009] A main controller used to control on-off of the plurality of electromagnetic valves.

[0010] In an embodiment of the present application, the gas storage tank, the shunt assembly and the gas outlet pipe are arranged in sequence along a straight line direction, the gas storage cavity and the gas outlet channel have a cross section perpendicular to the straight line direction, the center of the cross section is located on the same center line, and the plurality of shunt pipes are evenly distributed between the gas storage tank and the gas outlet pipe.

[0011] In an embodiment of the present application, the gas storage tank is provided with a separation component, the separation component separates the gas storage tank into a plurality of gas storage cavities; among the plurality of shunt pipes, the shunt pipes located at the center line position and different outer ring positions of the center line are divided into different groups, and each group of shunt pipes is connected to a gas storage cavity.

[0012] In an embodiment of the present application, the separation component is a partition plate or an inner tank body; the space in the gas storage tank at different positions along the straight line direction is separated into different gas storage cavities by the partition plate; and the space in the gas storage tank at the center line position and different outer ring positions of the center line is separated into different gas storage cavities by the inner tank body.

[0013] In an embodiment of the present application, the inlets of a plurality of shunt pipes are connected to the same shunt component, and / or the outlets of a plurality of shunt pipes are connected to the same shunt component.

[0014] In an embodiment of the present application, the shunt component is a shunt disc or a shunt cylinder; the edge region of the shunt disc is a sealing connection part, the center region of the shunt disc is provided with a plurality of air holes, the air holes are connected to the shunt pipes; one end of the shunt cylinder is closed, the other end of the shunt cylinder is provided with a sealing connection part, and the side wall of the shunt cylinder or the side wall and the closed end of the shunt cylinder are provided with a plurality of air holes, the air holes are connected to the shunt pipes.

[0015] In an embodiment of the present application, the shunt pipe is a straight pipe parallel to the center line, or a middle section of the shunt pipe is arched away from the center line, or an inlet section of the shunt pipe is arched away from the center line.

[0016] In one embodiment of the present application, the end of the gas tank opposite to the high-pressure gas output direction is provided with a buffer assembly.

[0017] The present application also provides a controllable waveform characteristic shock test method, characterized by comprising the following steps:

[0018] S1, providing the shock wave test device;

[0019] S2, inflating each gas storage cavity of the gas tank to make the gas pressure in each gas storage cavity of the gas tank reach a predetermined value;

[0020] S3, opening the set electromagnetic valve at a set time to generate shock waves with different waveform graphs in the gas outlet channel, simulating the shock waves received by the detected object under different environments.

[0021] In one embodiment of the present application, in step S3, the number of opened electromagnetic valves gradually decreases over time.

[0022] The above technical solution of the present application has the following advantages compared with the prior art:

[0023] 1) The controllable waveform characteristic shock wave test device and shock wave test method of the present application can control the number and time of conduction of different electromagnetic valves to control the waveform graph of the shock wave, thereby simulating the shock wave in different scenarios to detect the protection capability of the explosion-proof valve under the action of the shock wave with different waveforms.

[0024] 2) The controllable waveform characteristic shock wave test device and shock wave test method of the present application can further control the waveform graph of the shock wave by controlling different sizes of the gas tank, thereby simulating the shock wave in different scenarios to detect the protection capability of the explosion-proof valve under the action of the shock wave with different waveforms.

[0025] 3) The controllable waveform characteristic shock wave test device and shock wave test method of the present application can reduce the flow resistance of high-pressure gas by arranging the centers of the ventilation cross sections of the gas storage cavity and the gas outlet channel in the same straight line direction.

[0026] 4) The controllable waveform characteristic shock wave test device and shock wave test method of the present application can make the detected object receive gradually enhanced shock waves by the position arrangement of different gas storage cavities and the connection of the shunt pipe. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments of the present application and in conjunction with the drawings.

[0028] Figure 1A front view of a shock wave test device in the prior art;

[0029] Figure 2 A schematic view of a shock wave in the prior art;

[0030] Figure 3 A front view of a shock wave test device in embodiment one of the present application;

[0031] Figure 4 A schematic view of a shock wave in embodiment one of the present application;

[0032] Figure 5 A front view of a shock wave test device in embodiment two of the present application;

[0033] Figure 6 A side view of a shock wave test device in embodiment two of the present application;

[0034] Figure 7 A front view of a shock wave test device in embodiment three of the present application;

[0035] Figure 8 A side view of a shock wave test device in embodiment three of the present application;

[0036] Figure 9 A schematic view of a flow dividing cylinder in embodiment three of the present application;

[0037] Figure 10 A schematic view of a shock wave in embodiment three of the present application;

[0038] Figure 11 A schematic view of a shock wave in embodiment four of the present application;

[0039] Figure 12 A partial front view of a shock wave test device in embodiment five of the present application;

[0040] Figure 13 A schematic view of a flow dividing disc in embodiment five of the present application;

[0041] Figure 14 A front view of a shock wave test device in embodiment six of the present application;

[0042] Figure 15 A schematic view of a shock wave in embodiment six of the present application;

[0043] Figure 16 A front view of a shock wave test device in embodiment seven of the present application;

[0044] Figure 17 A front view of a shock wave test device in embodiment eight of the present application;

[0045] Figure 18Fig. 8 is a schematic view of the shock wave in the eighth embodiment of the present application.

[0046] Description of the drawings: 11, gas tank; 12, gas inlet pipe; 13, gas outlet pipe; 14, rupture disc mounting structure;

[0047] 20, measured object; 21, gas tank; 211, gas storage cavity; 22, gas outlet pipe; 221, gas outlet passage; 23, shunt pipe; 24, electromagnetic valve; 25, shunt disc; 26, buffer assembly; 27, shunt cylinder; 28, inner tank body; 29, partition plate. DETAILED DESCRIPTION

[0048] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it. The embodiments are not intended to limit the present application.

[0049] Embodiment one: see Figure 3 and Figure 4 As shown in the legend therein, a controllable waveform characteristic shock wave test device includes:

[0050] Gas tank 21, the above-mentioned gas tank 21 defines one or more gas storage cavities 211, and the above-mentioned gas storage cavities 211 are used to store high-pressure gas;

[0051] Gas outlet pipe 22, the above-mentioned gas outlet pipe 22 defines a gas outlet passage 221, and the outlet of the above-mentioned gas outlet passage 221 is used to connect the measured object 20;

[0052] Shunt assembly, the above-mentioned shunt assembly includes a plurality of shunt pipes 23, the above-mentioned plurality of shunt pipes 23 are connected in parallel, the inlet of the above-mentioned plurality of shunt pipes 23 is connected to the outlet of the above-mentioned gas storage cavity 211, and the outlet of the above-mentioned plurality of shunt pipes 23 is connected to the inlet of the same above-mentioned gas outlet passage 221;

[0053] On-off assembly, the above-mentioned on-off assembly includes a plurality of electromagnetic valves 24, the above-mentioned electromagnetic valves 24 correspond one-to-one to the above-mentioned shunt pipes 23, and the above-mentioned electromagnetic valves 24 are used to control the on-off of the corresponding shunt pipes 23;

[0054] Main controller (not shown in the figure), the above-mentioned main controller is used to control the opening and closing of the above-mentioned plurality of electromagnetic valves 24.

[0055] The technical scheme mainly comprises a gas storage tank, a shunt pipe, a main controller and an electromagnetic valve, wherein the main controller, the shunt pipe and the electromagnetic valve can discharge the gas in the gas storage tank from the shunt pipe. The gas storage tank is used for storing high-pressure gas, and a plurality of shunt pipes are connected to the right end of the gas storage tank. One pipe opening of the shunt pipe is connected to the gas storage tank, and the other pipe opening of the shunt pipe is connected to a gas outlet pipe. Each shunt pipe is equipped with an electromagnetic valve, and one electromagnetic valve is used for controlling the opening and closing state of one shunt pipe. When the electromagnetic valve is turned on, the high-pressure gas in the gas storage tank is discharged through the shunt pipe, and an impact wave is formed in the gas outlet pipe. The gas outlet pipe is used for connecting the pipe openings of the plurality of shunt pipes and the detected object, so as to ensure that the impact wave is opposite to the detected object. All the electromagnetic valves are connected to the main controller, and the main controller controls the conduction state of each shunt pipe. The high-pressure gas is discharged from different shunt pipes, and the impact wave is formed in the gas outlet pipe.

[0056] An impact wave sensor is arranged on the side of the gas outlet pipe close to the detected object, and the impact wave sensor is used for testing the impact wave and forming a waveform diagram. An impact wave sensor is also arranged behind the detected object, and the impact wave sensor is used for detecting whether the detected object can play a good blocking effect and detecting the pressure of the impact wave after the impact wave penetrates the detected object.

[0057] Each electromagnetic valve is equipped with a feedback unit, and the feedback unit can transmit the action of the electromagnetic valve to the main controller after each electromagnetic valve acts. In this way, it can be known whether each electromagnetic valve is in a normal state, and the failure of the electromagnetic valve itself can be avoided, so that the impact wave waveform diagram cannot be accurately adjusted.

[0058] In addition, an air inlet pipe, a pressure detection valve and a safety relief valve are arranged in the gas storage tank. The pressure detection valve is used for detecting the pressure in the gas storage tank, and the safety relief valve is used for limiting the maximum pressure of the gas storage tank. When the maximum pressure is exceeded, the gas can be discharged to release the pressure, so as to avoid excessive pressure.

[0059] In the embodiment, the gas storage tank 21 defines the gas storage cavity 211.

[0060] In the embodiment, the gas storage tank 21, the shunt assembly and the gas outlet pipe 22 are arranged in a straight line direction in sequence. The gas storage cavity 211 and the gas outlet passage 221 have cross sections perpendicular to the straight line direction, the centers of the cross sections are located on the same center line, and the plurality of shunt pipes 23 are distributed between the gas storage tank 21 and the gas outlet pipe 22. The arrangement can reduce the flow resistance of the high-pressure gas and avoid pressure loss of the gas during flow.

[0061] Preferably, in the embodiment, the inlets of the plurality of shunt pipes 23 are connected to the same shunt component and / or the outlets of the plurality of shunt pipes 23 are connected to the same shunt component. In the embodiment, the inlets of all the shunt pipes are connected to the same shunt component and the outlets of all the shunt pipes are connected to the same shunt component, which facilitates the quick installation of the whole shunt assembly.

[0062] Preferably, in the embodiment, the shunt component is a shunt disc 25, the edge region of the shunt disc 25 is a sealing connection part, the central region of the shunt disc 25 is provided with a plurality of air holes, and the air holes are connected to the shunt pipes 23. In the embodiment, the outlet of the gas tank is provided with a flange, the inlet of the gas outlet pipe is provided with a flange, and the sealing connection part of the shunt disc is a flange connection part provided with a connection hole. The shunt disc is sealingly connected to the flange of the outlet of the gas tank and the flange of the inlet of the gas outlet pipe.

[0063] Preferably, in the embodiment, the shunt pipes 23 are straight pipes parallel to the center line. In the embodiment, the number of shunt pipes is small, so the shunt pipes can be straight pipes. The shunt pipes directly guide the high-pressure gas in the gas tank into the gas outlet pipe, which can avoid the formation of a curved gas channel between the gas tank and the gas outlet pipe and reduce the gas pressure when the gas flows.

[0064] Preferably, in the embodiment, the end of the gas tank 21 opposite to the high-pressure gas output direction is provided with a buffer assembly 26. When the gas tank discharges high-pressure gas, the gas tank will also be subjected to a reverse impact force. A buffer assembly is connected to the leftmost end of the gas tank. The buffer assembly can improve the stability of the gas tank when it is fixed and ensure that the gas tank stably discharges gas. The buffer assembly is specifically implemented as a stop block. The stop block has a horizontal surface and a vertical surface. The horizontal surface is fixed to the ground, and the vertical surface is in contact with or connected to the gas tank to offset the reverse impact force received by the gas tank through the stop block.

[0065] The following describes an impact test method using a controllable waveform feature, which includes the following steps:

[0066] S1, providing the impact wave test device described above;

[0067] S2, inflating each gas storage chamber 211 of the gas tank to make the gas pressure in each gas storage chamber 211 of the gas tank reach a predetermined value;

[0068] S3, opening the set electromagnetic valve 24 at a set time to generate impact waves with different waveforms in the gas outlet channel 221, simulating the impact waves received by the detected object under different environments.

[0069] As Figure 3As shown, this embodiment includes three shunt pipes. The main controller first controls one or two shunt pipes to be turned on. When the high-pressure gas in one or two shunt pipes is discharged, as... Figure 4 As shown, the pressure rises at t1, reaches its maximum at t2, and then gradually decreases. At a certain point, the main controller controls the discharge to be released into one or two other unopened shunt pipes. At this time, the pressure will rise again to the t3 position, changing the downward trend of the pressure wave. This allows for the generation of different impulse waveforms to detect the explosion resistance of the tested object.

[0070] In this embodiment, with only one gas storage tank, the gas pressure inside the tank gradually decreases as the number of solenoid valves opened increases. To maintain the same shock wave pressure as the previous shock wave, the number of solenoid valves opened subsequently needs to be greater than the number opened in the previous shock wave.

[0071] Example 2: See Figure 5 and Figure 6 The rest is the same as in Embodiment 1, except that the diversion component connected to the inlet of the diversion pipe is a diversion cylinder 27. One end of the diversion cylinder 27 is closed, and the other end is a sealed connection. Multiple vent holes are provided on the side wall of the diversion cylinder 27, or on the side wall and the closed end of the diversion cylinder 27. These vent holes are connected to the diversion pipe 23. The inlet section of the diversion pipe 23 arches away from the centerline.

[0072] To better control the waveform of the shock wave, the number of shunt tubes is increased to seven. A shunt cylinder connects the shunt tubes to the gas storage tank. To ensure smooth gas flow, the shunt cylinder is cylindrical, with some shunt tubes connected to its side wall and others to its end face. When the high-pressure gas exits the gas storage tank, it enters the cylindrical shunt cylinder. Both the side wall and end face of the cylindrical shunt cylinder guide the gas, allowing for rapid flow of the high-pressure gas into the shunt tubes. The seven shunt tubes allow for further adjustment of the shock wave waveform; for example, high-pressure gas can be released sequentially from four, two, and one shunt tubes in a 4-2-1 sequence.

[0073] Example 3: See Figures 7 to 10 As shown in the illustration, the rest is the same as in Embodiment 2, except that the number of diversion tubes is increased to 15. In this case, several diversion tubes are connected in a ring to the side wall of the diversion cylinder. The gas storage tank can guide the gas into the gas pipe in three dimensions with the help of the diversion cylinder to ensure smooth gas flow.

[0074] Figure 10The waveform diagram shows that the peak strength gradually decreases. The number of shunt pipes is 15, and the duration of the shock wave peak can be regulated twice. A few shunt pipes are controlled to be turned on in advance by the master controller. The pressure gradually rises in the time period from t1 to t2, forming the first peak. In the time period from t2 to t3, the shock wave gradually decays from the peak. At this time, a few shunt pipes that are not turned on can be controlled to be turned on again by the master controller, so that the waveform diagram rises to a certain pressure at t3. In the time period from t3 to t4, the pressure gradually decreases again. At this time, a few shunt pipes that are not turned on can be controlled to be turned on again, so that the pressure rises again. Among them, the number of shunt pipes turned on gradually decreases over time, and the number of shunt pipes turned on each time gradually decreases.

[0075] The shunt cylinder includes a cylindrical cylinder and a flange plate. The cylindrical cylinder is provided with connecting holes at both ends. The cylindrical cylinder and the flange plate in the shunt cylinder are connected by bolts. The cylindrical cylinder and the gas storage tank are also connected by bolts. The side wall of the cylindrical cylinder and the bottom wall of the flange plate are both provided with a plurality of holes, and the shunt pipes are connected with the holes. When high-pressure gas enters the inside of the shunt cylinder, the high-pressure gas can quickly enter the inside of the plurality of shunt pipes from the shunt cylinder, achieving the purpose of rapid shunting.

[0076] In this embodiment of the shunt cylinder, the number of shunt pipes can be implemented to be more, and the length of the shunt cylinder is extended, so that the shunt pipes are distributed on the side wall of the shunt cylinder, thereby increasing the number of shunt pipes as much as possible. The more the number of shunt pipes, the more the purpose of adjusting the shock wave waveform diagram in multiple stages.

[0077] Embodiment four: see Figure 11 The rest is the same as embodiment three, except that the time when the plurality of shunt pipe channels are turned on is controlled. The pressure reaches the maximum at t2, and the subsequent shunt pipe channels that are not turned on are turned on, so that the pressure of the shock wave formed at t2 is at a relatively stable value. In this way, the detected piece will be subjected to a high-pressure impact for a long time, and whether the detected piece can maintain under the long-time high-pressure impact can be tested to test the impulse value that the detected object can withstand.

[0078] Embodiment five: see Figure 12 and Figure 13 As shown in the legend therein, the rest is the same as embodiment three, except that the shunt parts connected with the inlet and outlet of the shunt pipe are all shunt discs, and the middle segment position of the shunt pipe 23 is arched away from the center line.

[0079] In the case of 15 shunt pipes, the middle part of each shunt pipe is designed to be bent, so that the shunt pipes are distributed circumferentially on the shunt disc, the middle part of the shunt pipe has an opening, and the opening of each shunt pipe faces the axial center line of the shunt disc. The shunt disc can also fix several shunt pipes on the gas storage tank to achieve the purpose of fixing the shunt pipes. The bent part of the middle part of the shunt pipe can be connected to the electromagnetic valve to provide space for the installation of the electromagnetic valve, so that several shunt pipes can be evenly connected to the gas storage tank.

[0080] Specifically, the outer edge of the shunt disc is annularly provided with a through hole, and the shunt disc is fixed to the opening of the gas storage tank by means of a bolt.

[0081] In the above embodiment one to embodiment five, all high-pressure gas is stored in a gas storage tank. After the shunt pipe discharges the gas in the tank, the pressure in the gas storage tank is reduced, and the pressure of the subsequent shunt pipe gas release is correspondingly reduced. The subsequent shock wave cannot increase the pressure of the previous shock wave, resulting in that the waveform diagram of the shock wave generated by the high-pressure gas cannot be gradually improved.

[0082] Embodiment six: see Figure 14 and Figure 15 As shown in the legend therein, the rest is the same as embodiment five, except that the above-mentioned gas storage tank 21 is provided with a separation component, and the above-mentioned separation component separates the above-mentioned gas storage tank 21 into a plurality of above-mentioned gas storage cavities 211.

[0083] Among the above-mentioned plurality of shunt pipes 23, the above-mentioned shunt pipes 23 located at the above-mentioned center line position and the different outer circle positions of the above-mentioned center line are divided into different groups, and each group of the above-mentioned shunt pipes 23 is connected to one of the above-mentioned gas storage cavities 211.

[0084] In this embodiment, the above-mentioned separation component is an inner tank body 28, and the space in the above-mentioned gas storage tank 21 located at the above-mentioned center line position and the different outer circle positions of the above-mentioned center line is divided into different above-mentioned gas storage cavities 211 by the inner tank body 28.

[0085] In order to make the shock wave form a gradually enhanced wave pattern, an inner tank is arranged inside the gas storage tank, and the inside of the gas storage tank is divided into a first gas storage cavity located at a position outside the center line and a second gas storage cavity located at the center line. The shunt pipes located at the position outside the center line are connected to the gas storage tank through the shunt disc, and the shunt pipes located at the center line pass through the shunt disc to connect the inner tank. The main controller is used to conduct the shunt pipe connected to one of the first gas storage cavity and the second gas storage cavity at t1, and maintain the wave pattern at the pressure P1. Then, the main controller is used to conduct the shunt pipe connected to the other of the first gas storage cavity and the second gas storage cavity at t3, so that the shock wave can be further enhanced on the original pressure, thereby forming a gradually enhanced wave pattern. Such a shock wave is common in secondary explosions, such as dust cloud explosions occurring after an explosion, and temperature pressure bombs in the military.

[0086] The two gas storage cavities release high-pressure gas separately, and the pressures in the two gas storage cavities do not affect each other, thereby being able to form a gradually enhanced wave pattern. In addition, the shunt pipe directly passes through the shunt disc to communicate with the second gas storage cavity. After the shunt pipe is communicated, the shunt pipe and the shunt disc are welded. In this way, the overall arrangement of the original shunt pipe does not need to be changed, and the shunt pipe can be connected to the two gas storage cavities.

[0087] Example Seven: Refer to Figure 16 As shown in the legend therein, the rest is the same as in Example Five, except that the isolation component is a partition 29, and the space in the gas storage tank 21 at different positions in the straight line direction is divided into different gas storage cavities 211 by the partition 29.

[0088] A vertical partition is arranged inside the gas storage tank to divide the inside of the gas storage tank into a first gas storage cavity and a second gas storage cavity. Part of the shunt pipes are directly connected to the first gas storage cavity through the shunt disc, and the other part of the shunt pipes are directly connected to the second gas storage cavity after passing through the shunt disc.

[0089] In addition to the schemes shown in Example Six and Example Seven, two or more tank bodies that do not have a connection relationship can also be connected to the gas outlet pipe through the shunt pipe, so that the high-pressure gas inside the two or more tank bodies is introduced into the gas outlet pipe, and a gradually enhanced shock wave can be formed at the gas outlet pipe.

[0090] Example Eight: Refer to Figure 17 and Figure 18 As shown in the legend therein, the rest is the same as in Example Five, except that the isolation component includes an inner tank 28 and a partition 29; the space in the gas storage tank 21 at different positions in the straight line direction is divided into different gas storage cavities by the partition 29, and the space at one of the positions of the center line and the positions outside the center line is divided into different gas storage cavities by the inner tank 28.

[0091] The inside of the gas tank is divided into three gas storage cavities, and all the branch pipes are connected to the three gas storage cavities in batches. In this way, the inside of the gas tank has three gas storage cavities that do not affect each other. After the high-pressure gas in one of the gas storage cavities is released, the high-pressure gas in the remaining gas storage cavities can be released again, the shock wave formed by the first gas storage cavity can be maintained or enhanced, and a gradually enhanced shock wave can be formed.

[0092] Specifically, all the electromagnetic valves are divided into three parts. The electromagnetic valve of the branch pipe connected to the first gas storage cavity is turned on at the t2 node to form a first shock wave with a pressure of P1. The electromagnetic valve of the branch pipe connected to the second gas storage cavity is turned on at the t3 node to form a shock wave with a pressure of P2. The electromagnetic valve of the branch pipe connected to the third gas storage cavity is turned on at the t5 node to form a shock wave with a pressure of P3. Since the pressures in the gas storage cavities do not affect each other, a gradually increasing shock wave can be formed.

[0093] Obviously, the above embodiments are only examples for the purpose of clarity and are not limiting. Based on the above description, those skilled in the art can make other different forms of changes or variations. It is not necessary and impossible to exhaust all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A controllable waveform characteristic shock wave test device, comprising a gas storage tank and a gas outlet pipe, the gas storage tank defines a plurality of gas storage cavities for storing high pressure gas, the gas outlet pipe defines a gas outlet channel, and the outlet of the gas outlet channel is used to connect a test object, characterized in that, the shock wave test device further comprises a shunt assembly, an on-off assembly and a main controller, the shunt assembly comprises a plurality of shunt pipes, the plurality of shunt pipes are arranged in parallel, the inlet of the plurality of shunt pipes is connected to the outlet of the gas storage cavity, the outlet of the plurality of shunt pipes is connected to the inlet of the same gas outlet channel, the on-off assembly comprises a plurality of electromagnetic valves, the electromagnetic valves correspond to the shunt pipes one by one, the electromagnetic valves are used to control the on-off of the corresponding shunt pipes, and the main controller is used to control the opening and closing of the plurality of electromagnetic valves, a set of electromagnetic valves is opened at a set time, so as to generate shock waves with different waveform graphs in the gas outlet channel. The gas storage tank, the shunt assembly and the gas outlet pipe are sequentially arranged along a straight line direction, the gas storage cavities and the gas outlet channel have cross sections perpendicular to the straight line direction, the centers of the cross sections are located on the same center line, the plurality of shunt pipes are uniformly distributed between the gas storage tank and the gas outlet pipe, the gas storage tank is provided with a separation component, the separation component separates the gas storage tank into a plurality of gas storage cavities, among the plurality of shunt pipes, the shunt pipes located at the center line position and different outer circle positions of the center line are divided into different groups, each group of shunt pipes corresponds to connect a gas storage cavity, two gas storage cavities release high pressure gas separately, the pressure in the two gas storage cavities does not affect each other, so as to form a gradually increasing waveform graph, or after the high pressure gas in one of the gas storage cavities is released, the high pressure gas in the remaining gas storage cavities is released again, maintaining or enhancing the shock wave formed by the first gas storage cavity, so as to form a gradually increasing shock wave. The separation component is a partition plate or an inner tank body; the spaces at different positions along the straight line direction in the gas storage tank are separated into different gas storage cavities by the partition plate; and the spaces at the center line position and different outer circle positions of the center line in the gas storage tank are separated into different gas storage cavities by the inner tank body.

2. The controllable waveform characteristic shock wave test device according to claim 1, characterized in that The inlets of a plurality of shunt pipes are connected to the same shunt component and / or the outlets of a plurality of shunt pipes are connected to the same shunt component.

3. The controllable waveform characteristic shock wave testing device according to claim 1, characterized in that, The shunt component is a shunt disc or a shunt cylinder; the edge area of the shunt disc is a sealed connection part, the center area of the shunt disc is provided with a plurality of air holes, and the air holes are connected to the shunt pipes; one end of the shunt cylinder is closed, the other end of the shunt cylinder is provided with a sealed connection part, and the side wall of the shunt cylinder or the side wall and the closed end of the shunt cylinder are provided with a plurality of air holes, and the air holes are connected to the shunt pipes.

4. The controllable waveform characteristic shock wave testing device according to claim 3, characterized in that The shunt pipe is a straight pipe parallel to the center line, or the middle section of the shunt pipe is arched away from the center line, or the inlet section of the shunt pipe is arched away from the center line.

5. The controllable waveform characteristic shock wave testing device according to claim 1, characterized in that, The end of the gas storage tank away from the high pressure gas output direction is provided with a buffer assembly.

6. The controllable waveform characteristic shock wave testing device according to claim 1, characterized in that, The method comprises the following steps:

7. A controllable waveform characteristic impact test method characterized by, ​ S1, providing the shock wave test device according to any one of claims 1 to 6; S2, inflating each gas storage cavity of the gas storage tank to make the gas pressure in each gas storage cavity of the gas storage tank reach a predetermined value; S3, opening the set electromagnetic valve at a set time to generate shock waves with different wave patterns in the gas outlet channel, simulating the shock waves received by the detected object in different environments.

8. The controllable waveform characteristic impact test method according to claim 7, characterized by, In step S3, the number of opened electromagnetic valves gradually decreases over time.

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