Shock wave simulation generation device
By designing a shock wave simulation generator, the power component and impact component are used to generate positive or negative pressure in the sealed cavity, the problem of inaccurate detection of shock wave sensors in the prior art is solved, and automation, accuracy and safety are achieved. promote.
Patent Information
- Application Number
- CN202411726765.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-02-25
AI Technical Summary
Existing shock wave sensors are difficult to perform accurate inspection after use for a period of time, and there are individual differences and risks of misoperation in manual operations, resulting in inaccurate inspections.
Design a shock wave simulation generator, including a power component, an impact component and a closed cavity, which drives the impact component to reciprocate through the power component, thereby increasing or decreasing the volume of the closed cavity, generating positive or negative pressure, thereby simulating explosion generation shock wave.
The device can automatically provide shock waves, reduce differences caused by human operation, improve the accuracy and safety of shock wave sensor inspection, and is simple and convenient to use.
Smart Images
Figure CN119509804A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of explosion shock wave monitoring, and in particular to a shock wave simulation generating device. Background Art
[0002] A shock wave sensor is a sensor used to detect and measure the impact or force of an object and convert it into an electrical signal output. The working principle of the shock wave sensor is mainly based on the piezoelectric effect or micro-electromechanical system (MEMS) technology. The piezoelectric shock sensor contains a piezoelectric crystal material that produces a potential change when it is impacted or hit. This potential change can be measured and recorded, thereby providing relevant information about the impact.
[0003] Shock wave sensors are generally used for explosion monitoring in dangerous areas. After a period of use, shock wave sensors often need to be inspected to determine their working status. However, due to the danger of explosion, it is often impossible to conduct normal inspections on shock wave sensor devices. Currently, most inspections are conducted manually, by compressing air into a confined space or expanding a confined space to generate negative pressure. However, due to individual differences in the human process and differences in operation, shock wave sensors often fail to alarm, or the shock wave sensor device does not alarm after reaching the threshold, and the accuracy of the shock wave sensor inspection cannot be ensured. Therefore, there is an urgent need to provide a shock wave simulation generating device that can provide shock waves to shock wave sensors to accurately inspect shock wave sensors. Summary of the invention
[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a shock wave simulation generating device which can automatically provide shock waves to the shock wave sensor, reduce the differences caused by manual operation, and is simple and convenient to use.
[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A shock wave simulation generating device comprises a shell, wherein a power component, an impact component and a closed cavity are arranged in the shell, wherein the power component is connected to the impact component, the power component can drive the impact component to reciprocate, the impact component is connected to the closed cavity, and the impact component increases or decreases the volume of the closed cavity during the reciprocating motion, so as to generate positive pressure or negative pressure in the closed cavity to simulate the shock wave process generated by the explosion.
[0006] Preferably, the impact assembly comprises a compression rod and a piston, the compression rod is connected to the piston, the piston is slidably connected in the impact tube, and the impact tube is connected to the closed cavity, the compression rod extends out of the impact tube and is connected to the power assembly, and the power assembly drives the piston to reciprocate in the impact tube through the compression rod, so that the movement of the piston in the impact tube generates positive pressure or negative pressure in the closed cavity to simulate the shock wave process generated by the explosion.
[0007] Preferably, the power assembly includes a driving motor and a cam, the cam is connected to the rotating shaft of the driving motor so that the driving motor can drive the cam to rotate, and the impact assembly also includes a connecting shaft and a spring, one end of the connecting shaft abuts against the cam, and the other end of the connecting shaft is connected to the compression rod, and the spring also abuts against the connecting shaft, so that the connecting shaft is always abutted against the cam during the rotation of the cam through the spring. Preferably, a pressure gauge is further provided on the housing, and the pressure gauge is connected to the closed cavity through a hose, and is used to measure the pressure value of the closed cavity.
[0008] Preferably, a solenoid valve and a controller are also provided in the shell, and the controller is electrically connected to the drive motor and the solenoid valve so that the drive motor and the solenoid valve are controlled by the controller. The solenoid valve is connected to the closed cavity through a hose, and the solenoid valve can connect the closed cavity to the atmosphere when it is turned on.
[0009] Preferably, the maximum distance that the compression rod drives the piston to move from the initial position to the closed cavity in the impact tube is L1, the maximum distance that the compression rod drives the piston to move from the initial position to the closed cavity in the impact tube is L2, and L1:L2=3:1.
[0010] Preferably, the time it takes for the drive motor to drive the cam to rotate one circle is less than 20 seconds.
[0011] Preferably, when the driving motor drives the cam to rotate to an initial position, the controller controls the solenoid valve to be turned on.
[0012] Preferably, the drive motor is a stepper motor, a DC motor or a servo motor.
[0013] Preferably, the housing is an aluminum housing, and a start button and a reset button are provided on the outer surface of the housing, and the start button and the reset button are both electrically connected to the controller.
[0014] Compared with the prior art, the present invention has the following advantages: 1. The shock wave simulation generating device of this scheme mainly controls the rotation of the driving motor through the controller, and the driving motor drives the cam to rotate. The cam is connected to the compression rod through the connecting shaft. The cam is similar to the snail structure, and can rotate to make the compression rod produce a positive and negative stroke compared to the initial position. The compression rod is connected to the piston. The reciprocating motion of the piston causes the volume in the closed cavity to increase and decrease, so that a compressed and expanded volume is generated in the closed cavity, thereby generating positive and negative pressures in the closed cavity. The movement trajectory of the piston is determined by the cam, thereby simulating the shock wave process generated by the explosion in the closed cavity.
[0015] 2. This solution ensures the tight connection between the connecting shaft and the cam through a spring, so that the connecting shaft always contacts the cam during the entire rotation process of the cam, thereby ensuring the accuracy of the movement of the compression rod and the piston, thereby ensuring the accuracy of the shock wave waveform in the closed cavity.
[0016] 3. The pressure gauge and solenoid valve of this solution are connected to the closed cavity through a hose. The pressure gauge can indicate the pressure inside the closed cavity. When the solenoid valve is turned on, it can ensure that the closed cavity is connected to the external atmospheric pressure, ensuring the generation of positive and negative pressures relative to the current atmospheric pressure. This solution ensures that when the cam returns to the origin after a cycle, the closed cavity is reset, that is, the controller conducts electricity to the solenoid valve, and the atmosphere is connected to the closed cavity by the conduction of the solenoid valve, and the inside of the closed cavity is connected to the atmosphere, ensuring that the closed cavity is balanced with the atmospheric pressure. At this time, the pressure gauge measures that the differential pressure between the closed cavity and the atmospheric pressure is zero, and the pressure gauge value returns to zero, thereby correctly indicating the threshold value of positive and negative pressures. The solenoid valve can also be turned on by the reset button on the outer casing.
[0017] 4. The cam of this solution is connected to the drive motor, and the cam surface contacts the connecting shaft through a spring. The spring gives the connecting shaft a force in the direction of the closed cavity to ensure that the connecting shaft and the cam are in close contact. When the cam turns to the cutout position, the connecting shaft quickly moves toward the closed cavity due to the pressure of the spring in the direction of the closed cavity, causing the piston to compress the closed cavity and simulate an instantaneous shock wave signal. After that, the cam causes the compression rod to move in the opposite direction through arc changes until the movement distance exceeds the initial position and then continues to move forward a short distance. This solution sets the relationship between the movement distance of the compression rod in the initial position close to the closed cavity and the movement distance away from the closed cavity in the initial position to be 3:1, thereby generating a 3:1 positive and negative pressure value in the closed cavity, which well simulates the generation process of the shock wave, thereby achieving the purpose of calibrating the shock wave sensor.
[0018] 5. The device sets the position distance of positive pressure and negative pressure in the closed cavity through the cam structure, and accurately realizes the shock wave value of positive pressure and negative pressure through the rotation of the cam. Since the device automatically generates a shock wave process generated by an explosion through the driving motor, it can reduce the error caused by human operation and is simpler and more convenient to use.
[0019] 6. The device is small in size and light in weight, and can be easily carried to the installation site of the shock wave sensor for inspection.
[0020] 7. The device can simulate the entire process of shock wave generation through one-button operation, and has the advantages of high output accuracy and small human influence factors, which solves the shortcomings of existing shock wave simulation devices that use manual compression of the closed cavity, have low accuracy and are prone to misoperation. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of the shock wave simulation generating device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the shock wave simulation generating device of the present invention after removing the outer shell; Figure 3 It is a schematic diagram of the local structure of the cam and the connecting shaft in the shock wave simulation generating device of the present invention; Figure 4 It is a schematic diagram of the state of connecting the gas path in the shock wave simulation generating device of the present invention.
[0022] Explanation of the reference numerals: housing 1, handle 2, pressure gauge 3, battery 4, controller 5, sealed cavity 6, solenoid valve 7, drive motor 8, cam 9, connecting shaft 10, compression rod 11, spring 12, piston 13. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meaning understood by people with general skills in the field to which the present invention belongs.
[0024] The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "a", "an" or "the" and other similar words do not indicate a quantitative limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" cover the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0025] As attached Figure 1 To the attached Figure 4 As shown, a shock wave simulation device comprises a shell 1, a handle 2 is provided on the shell 1 for easy carrying, a controller 5, a power assembly, an impact assembly, a closed cavity 6, a solenoid valve 7 and a battery 4 are provided in the shell 1, and the battery 4 provides a portable power source for the shock wave simulation device to ensure the normal use of the shock wave simulation device at the shock wave sensor inspection site; the closed cavity 6 is used for compressing air, and its volume is determined according to the volume compressed by the compression rod 11 and the simulation threshold of the shock wave. The shell 1 is an aluminum shell 1, and a start button and a reset button are also provided on the outer surface of the shell 1, and the start button and the reset button are both electrically connected to the controller 5. The power assembly is connected to the impact assembly, and the power assembly can drive the impact assembly to reciprocate, and the impact assembly is connected to the closed cavity 6, and the impact assembly increases or decreases the volume of the closed cavity 6 during the reciprocating motion, so as to generate positive pressure or negative pressure in the closed cavity 6 to simulate the shock wave process generated by the explosion.
[0026] In this solution, the initial position is the zero point position of the cam 9.
[0027] As attached Figure 4As shown, in this embodiment, the impact assembly includes a compression rod 11 and a piston 13, the compression rod 11 and the piston 13 are connected, the piston 13 is slidably connected in the impact tube, and the impact tube is connected to the closed cavity 6, the compression rod 11 extends out of the impact tube and is connected to the power assembly, and the power assembly drives the piston 13 to reciprocate in the impact tube through the compression rod 11, so as to generate positive pressure or negative pressure in the closed cavity 6 through the movement of the piston 13 in the impact tube to simulate the shock wave process generated by the explosion. The maximum distance that the compression rod 11 drives the piston 13 to move from the initial position to the closed cavity 6 in the impact tube is L1, and the maximum distance that the compression rod 11 drives the piston 13 to move from the initial position to the closed cavity 6 in the impact tube is L2, and L1:L2=3:1.
[0028] As attached Figure 2 and attached Figure 3 As shown, in this embodiment, the power assembly includes a drive motor 8 and a cam 9, the drive motor 8 is a stepper motor, a DC motor or a servo motor, the cam 9 is connected to the rotating shaft of the drive motor 8, so that the drive motor 8 can drive the cam 9 to rotate, and the time for the drive motor 8 to drive the cam 9 to rotate one circle is less than 20 seconds, and the impact assembly also includes a connecting shaft 10 and a spring 12, one end of the connecting shaft 10 is in contact with the cam 9, and the other end of the connecting shaft 10 is connected to the compression rod 11, and the spring 12 is also in contact with the connecting shaft 10, so that the connecting shaft 10 is always in contact with the cam 9 during the rotation of the cam 9 through the spring 12. This solution ensures the tight connection between the connecting shaft 10 and the cam 9 through the spring 12, so that the connecting shaft 10 is always in contact with the cam 9 during the entire rotation process of the cam 9, thereby ensuring the accuracy of the movement of the compression rod 11 and the piston 13, thereby ensuring the accuracy of the shock wave waveform in the closed cavity 6.
[0029] The cam 9 of this solution is connected to the drive motor 8, and the surface of the cam 9 contacts the connecting shaft 10 through the spring 12. The spring 12 gives the connecting shaft 10 a force toward the closed cavity 6 to ensure that the connecting shaft 10 and the cam 9 are in close contact. When the cam 9 turns to the cut position, the connecting shaft 10 moves rapidly toward the closed cavity 6 due to the pressure of the spring 12 toward the closed cavity 6, so that the piston 13 compresses the closed cavity 6, simulating an instantaneous shock wave signal. After that, the cam 9 causes the compression rod 11 to move in the opposite direction through the arc change until the movement distance exceeds the initial position and then continues to move forward for a short distance. This solution sets the movement distance of the compression rod 11 from the initial position to the closed cavity 6 and the movement distance from the initial position to the closed cavity 6 to be 3:1, thereby generating a 3:1 positive and negative pressure value in the closed cavity 6, which well simulates the generation process of the shock wave, thereby achieving the purpose of calibrating the shock wave sensor.
[0030] In this embodiment, a pressure gauge 3 is also provided on the housing 1. The pressure gauge 3 is connected to the closed cavity 6 through a hose, and is used to measure the pressure value of the closed cavity 6 to ensure the accuracy of the shock wave pressure value generated in the cavity. The controller 5 is electrically connected to the drive motor 8 and the solenoid valve 7 to control the drive motor 8 and the solenoid valve 7 through the controller 5. The solenoid valve 7 is connected to the closed cavity 6 through a hose, and the solenoid valve 7 can connect the closed cavity 6 with the atmosphere when it is turned on. Specifically, when the drive motor 8 drives the cam 9 to rotate to the initial position, the controller 5 controls the solenoid valve 7 to be turned on. The pressure gauge 3 and the solenoid valve 7 of this scheme are both connected to the closed cavity 6 through a hose. The pressure gauge 3 can indicate the pressure in the closed cavity 6. When the solenoid valve 7 is turned on, it can ensure that the closed cavity 6 is connected to the external atmospheric pressure, ensuring the generation of positive and negative pressures relative to the current atmospheric pressure. This solution ensures that when the cam 9 returns to the origin after running a cycle, the closed cavity 6 is reset, that is, the controller 5 conducts electricity to the solenoid valve 7, and the atmosphere is connected to the closed cavity 6 by the conduction of the solenoid valve 7, and the inside of the closed cavity 6 is connected to the atmosphere, ensuring that the pressure inside the closed cavity 6 is balanced with the atmospheric pressure. At this time, the pressure gauge 3 measures that the differential pressure between the closed cavity 6 and the atmospheric pressure is zero, and the pressure gauge 3 value is restored to zero, thereby correctly indicating the threshold value of the positive and negative pressures. The solenoid valve 7 can also be turned on by the reset button on the housing 1.
[0031] When the shock wave simulation generating device of this scheme is used, as shown in the attached Figure 4 As shown, a four-way joint is used to connect the solenoid valve 7, the shock wave sensor, the closed cavity 6 and the pressure gauge 3. When working, the controller 5 controls the driving motor 8 to rotate, and the driving motor 8 drives the cam 9 to rotate. The cam 9 is connected to the compression rod 11 through the connecting shaft 10. The cam 9 is similar to a snail structure, and the compression rod 11 can produce a positive and negative stroke compared to the initial position by rotating. The compression rod 11 is connected to the piston 13. The reciprocating motion of the piston 13 causes the volume in the closed cavity 6 to increase and decrease, so that a compressed and expanded volume is generated in the closed cavity 6, thereby generating positive and negative pressures in the closed cavity 6. The motion trajectory of the piston 13 is determined by the cam 9, thereby simulating the shock wave process generated by the explosion in the closed cavity 6. The device sets the position distance of the positive pressure and the negative pressure in the closed cavity 6 through the cam 9 structure, and accurately realizes the shock wave values of the positive pressure and the negative pressure through the rotation of the cam 9. Since the device automatically generates a shock wave process generated by the explosion through the driving motor 8, the error caused by human operation can be reduced, and the use is simpler and more convenient. The device has the characteristics of small size and light weight, and can be carried to the installation site of the shock wave sensor for inspection. The device can simulate the entire process of shock wave generation through one-button operation, has the advantages of high output accuracy and small human influence factors, and solves the shortcomings of the existing shock wave simulation device that uses manual compression of the closed cavity 6, has low accuracy and is prone to misoperation.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.
Claims
1. A shock wave simulation generating device, characterized in that: The invention comprises a shell, in which a power component, an impact component and a closed cavity are arranged. The power component is connected to the impact component, and the power component can drive the impact component to reciprocate. The impact component is connected to the closed cavity, and the impact component increases or decreases the volume of the closed cavity during the reciprocating motion, so as to generate positive pressure or negative pressure in the closed cavity to simulate the shock wave process generated by the explosion.
2. The shock wave simulation generating device according to claim 1, characterized in that: The impact assembly includes a compression rod and a piston, the compression rod is connected to the piston, the piston is slidably connected in the impact tube, and the impact tube is communicated with the closed cavity, the compression rod extends out of the impact tube and is connected to the power assembly, and the power assembly drives the piston to reciprocate in the impact tube through the compression rod, so that the movement of the piston in the impact tube generates positive pressure or negative pressure in the closed cavity to simulate the shock wave process generated by the explosion.
3. The shock wave simulation generating device according to claim 2, characterized in that: The power assembly includes a driving motor and a cam, wherein the cam is connected to the rotating shaft of the driving motor so that the driving motor can drive the cam to rotate. The impact assembly also includes a connecting shaft and a spring, wherein one end of the connecting shaft abuts against the cam, and the other end of the connecting shaft is connected to the compression rod, and the spring also abuts against the connecting shaft so that the connecting shaft is always abutted against the cam during the rotation of the cam through the spring.
4. The shock wave simulation generating device according to claim 3, characterized in that: A pressure gauge is also provided on the shell, and the pressure gauge is connected to the closed cavity through a hose, and is used to measure the pressure value of the closed cavity.
5. The shock wave simulation generating device according to claim 4, characterized in that: A solenoid valve and a controller are also provided in the shell. The controller is electrically connected to the drive motor and the solenoid valve so that the drive motor and the solenoid valve can be controlled by the controller. The solenoid valve is connected to the closed cavity through a hose, and the solenoid valve can connect the closed cavity to the atmosphere when it is turned on.
6. The shock wave simulation generating device according to claim 5, characterized in that: The maximum distance that the compression rod drives the piston to move from the initial position to the closed cavity in the impact tube is L1, and the maximum distance that the compression rod drives the piston to move from the initial position to the closed cavity in the impact tube is L2, and L1:L2=3:
1.
7. The shock wave simulation generating device according to claim 6, characterized in that: The time it takes for the driving motor to drive the cam to rotate one circle is less than 20 seconds.
8. The shock wave simulation generating device according to claim 7, characterized in that: When the driving motor drives the cam to rotate to an initial position, the controller controls the solenoid valve to be turned on.
9. The shock wave simulation generating device according to claim 8, characterized in that: The driving motor is a stepping motor, a DC motor or a servo motor.
10. The shock wave simulation generating device according to claim 9, characterized in that: The shell is an aluminum shell, and a start button and a reset button are also arranged on the outer surface of the shell, and the start button and the reset button are both electrically connected to the controller.