Explosion-proof performance detection device

Abstract

This application relates to an explosion-proof performance testing device, including a mounting base, an impact mechanism, and a drive mechanism. The mounting base is used for mounting explosion-proof components; the impact mechanism is disposed on the mounting base and is positioned within the explosion-proof cavity of the explosion-proof component; the drive mechanism drives the impact mechanism to apply an impact force to the cavity wall of the explosion-proof cavity. Compared with conventional technologies, the above-mentioned explosion-proof performance testing device uses the impact force applied by the impact mechanism to the cavity wall of the explosion-proof cavity to simulate the shock wave generated by the explosion of a cable joint, which is closer to the actual explosion condition, thereby enabling more accurate acquisition of the explosion-proof performance of the explosion-proof component.

Description

Technical Field

[0001] This application relates to the technical field of testing electrical components, and in particular to a device for testing explosion-proof performance. Background Technology

[0002] Cable joints are critical connection components in cable lines. During long-term operation, they are prone to insulation breakdown and short-circuit faults due to insulation aging, installation defects, and partial discharge. These faults can release a large amount of arc energy in a short time, potentially leading to an explosion and seriously threatening the safety of the power grid and on-site personnel. To reduce the hazards of explosions, cable joints are generally equipped with explosion-proof components. The explosion-proof performance of these components directly determines the protective effect when a cable joint fault occurs.

[0003] Before leaving the factory, explosion-proof components need to be tested for their explosion-proof performance. In traditional technology, computer simulation is mainly used to analyze and evaluate the explosion-proof performance of explosion-proof components. The simulation model relies on manual input of material parameters, boundary conditions, load settings, etc. Factors such as parameter deviation, model simplification, and idealization of working conditions can lead to significant errors between the calculation results and the actual explosion situation, thus making it impossible to accurately obtain the explosion-proof performance of explosion-proof components. Summary of the Invention

[0004] Therefore, it is necessary to provide an explosion-proof performance testing device to address the problem that traditional technologies cannot accurately obtain the explosion-proof performance of explosion-proof components due to errors between model calculation results and actual explosion conditions.

[0005] The technical solution is as follows:

[0006] One embodiment provides an explosion-proof performance testing device, comprising:

[0007] Mounting bracket, the mounting bracket being used for mounting explosion-proof components;

[0008] An impact mechanism, disposed on the mounting base, is positioned within the explosion-proof cavity of the explosion-proof component; and

[0009] A driving mechanism is provided, which works in conjunction with the impact mechanism to drive the impact mechanism to apply an impact force to the cavity wall of the explosion-proof cavity.

[0010] The aforementioned explosion-proof performance testing device involves mounting the explosion-proof component on a mounting base and inserting the impact mechanism into the explosion-proof cavity of the component. Driven by a driving mechanism, the impact mechanism applies an impact force to the cavity wall, simulating the shock wave generated by a cable joint explosion. After the impact is complete, the reliability indicators of the explosion-proof component are evaluated. Compared with traditional technologies, this explosion-proof performance testing device uses the impact force applied by the impact mechanism to the cavity wall to simulate the shock wave generated by a cable joint explosion, which is closer to the actual explosion condition and can more accurately obtain the explosion-proof performance of the component.

[0011] In one embodiment, the impact mechanism includes an extension, a fitting, and an impact member. The extension is disposed on the mounting base and is used to extend into the explosion-proof cavity. The fitting is disposed on the extension, and the impact member is movably disposed on the fitting and is used to apply an impact force to the cavity wall of the explosion-proof cavity.

[0012] In one embodiment, at least two impactors are provided, and the at least two impactors are spaced apart circumferentially along the assembly.

[0013] In one embodiment, the assembly includes an assembly ring with assembly channels. At least two assembly channels are provided and spaced apart circumferentially along the assembly ring. The assembly channels penetrate the inner and outer ring surfaces of the assembly ring. Each assembly channel corresponds to an impact member. The impact member is movably inserted through the assembly channel and has a transmission end and an impact end arranged opposite to each other. The transmission end is used to drive the drive mechanism, and the impact end is used to apply an impact force to the wall of the explosion-proof cavity.

[0014] In one embodiment, the transmission end is provided with an abutment surface, the abutment surface is at an angle to the axial direction of the impact member, the driving mechanism includes an abutment rod, one end of the abutment rod is provided with a wedge-shaped portion, the wedge-shaped portion is movably inserted through the assembly ring and slides in cooperation with the abutment surface.

[0015] In one embodiment, the driving mechanism further includes a power member connected to the end of the abutment rod away from the wedge-shaped portion, the power member being used to drive the abutment rod to move along the axial direction of the abutment rod.

[0016] In one embodiment, the explosion-proof performance testing device further includes a force sensor located at the end of the abutment rod away from the wedge-shaped portion, and the power component is connected to the force sensor.

[0017] In one embodiment, the drive mechanism further includes a guide member having a mounting portion and a guiding portion, the mounting portion being used to abut against the cavity wall of the explosion-proof cavity, and the guiding portion being guided and engaged with the abutment rod.

[0018] In one embodiment, the assembly further includes a support plate, one side of which is connected to the extension and the other side of which is connected to the assembly ring.

[0019] In one embodiment, the explosion-proof performance testing device further includes a camera module, which is used to acquire the deformation process of the explosion-proof component when subjected to impact force;

[0020] Or / and, the explosion-proof performance testing device further includes a strain sensing module, which is installed on the explosion-proof component and is used to obtain the deformation of the explosion-proof component under impact force. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the explosion-proof performance testing device in one embodiment of this application.

[0023] Figure 2 This is a cross-sectional view of an explosion-proof performance testing device according to an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the explosion-proof performance testing device in one embodiment of this application when it is not equipped with explosion-proof components.

[0025] Figure 4 This is a schematic diagram of the impact mechanism in one embodiment of this application.

[0026] Figure 5 This is a schematic diagram of the abutment rod in one embodiment of this application.

[0027] Attached image annotations:

[0028] 100. Mounting base; 200. Impact mechanism; 210. Extension; 220. Assembly part; 221. Inner annular surface; 222. Outer annular surface; 230. Impact component; 231. Transmission end; 232. Impact end; 240. Support plate; 250. Assembly ring; 300. Drive mechanism; 310. Abutment rod; 311. Wedge-shaped part; 320. Power component; 330. Guide component; 400. Explosion-proof component; 410. First opening; 420. Second opening; 430. Explosion-proof cavity; 500. Force sensor. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0035] Please see Figures 1 to 3 One embodiment of this application provides an explosion-proof performance testing device, including a mounting base 100, an impact mechanism 200, and a drive mechanism 300. The mounting base 100 is used for mounting an explosion-proof component 400; the impact mechanism 200 is disposed on the mounting base 100 and is located within the explosion-proof cavity 430 of the explosion-proof component 400; the drive mechanism 300 is driven to cooperate with the impact mechanism 200, and the drive mechanism 300 is used to drive the impact mechanism 200 to apply an impact force to the cavity wall of the explosion-proof cavity 430.

[0036] In use, the explosion-proof performance testing device described above involves mounting the explosion-proof component 400 on the mounting base 100 and inserting the impact mechanism 200 into the explosion-proof cavity 430 of the explosion-proof component 400. Driven by the drive mechanism 300, the impact mechanism 200 applies an impact force to the cavity wall of the explosion-proof cavity 430 to simulate the shock wave generated by a cable joint explosion. After the impact is completed, the reliability index of the explosion-proof component 400 is evaluated. Compared with traditional technology, the explosion-proof performance testing device uses the impact force applied by the impact mechanism 200 to the cavity wall of the explosion-proof cavity 430 to simulate the shock wave generated by a cable joint explosion, which is closer to the actual explosion condition and can more accurately obtain the explosion-proof performance of the explosion-proof component 400.

[0037] For explanation, please refer to Figure 1 and Figure 2 The explosion-proof component 400 is typically cylindrical. The cylindrical explosion-proof component 400 has an explosion-proof cavity 430 and a first opening 410 and a second opening 420 connected to the explosion-proof cavity 430. When it is necessary to test the explosion-proof performance of the explosion-proof component 400, the explosion-proof component 400 is installed on the mounting base 100, and the impact mechanism 200 extends into the explosion-proof cavity 430 through the first opening 410 or the second opening 420 so that the impact mechanism 200 impacts the cavity wall of the explosion-proof cavity 430, thereby simulating the shock wave generated by the explosion of the cable joint.

[0038] In one embodiment, the explosion-proof component 400 is an explosion-proof box.

[0039] Furthermore, the drive mechanism 300 can be inserted through the first opening 410 and driven to connect with the impact mechanism 200, or it can be inserted through the second opening 420 and driven to connect with the impact mechanism 200; no specific limitation is made here.

[0040] Please see Figure 1 and Figure 2 In some embodiments, the explosion-proof component 400 is composed of two parts (hereinafter referred to as the upper part and the lower part) spliced ​​together. When installing the explosion-proof component 400, the lower part is first installed on the clamp of the mounting base 100, and then the upper part is fastened to the lower part so that the upper part and the lower plate form an explosion-proof cavity 430. At the same time, the impact mechanism 200 and the drive mechanism 300 can be wrapped in the explosion-proof cavity 430, which facilitates the impact mechanism 200 to apply impact force to the cavity wall of the explosion-proof cavity 430.

[0041] Furthermore, in some embodiments, the impact force exerted by the impact mechanism 200 on the cavity wall of the explosion-proof cavity 430 is directed radially along the explosion-proof component 400.

[0042] Please see Figure 1 In one embodiment, the mounting base 100 is further provided with a clamp for securing the explosion-proof component 400.

[0043] Please see Figures 1 to 4 In one embodiment, the impact mechanism 200 includes an extension 210, a fitting 220, and an impact member 230. The extension 210 is disposed on the mounting base 100 and is used to extend into the explosion-proof cavity 430. The fitting 220 is disposed on the extension 210. The impact member 230 is movably disposed on the fitting 220 and is used to apply an impact force to the cavity wall of the explosion-proof cavity 430.

[0044] The extension 210 provided on the mounting base 100 can extend into the explosion-proof cavity 430 so that the impact member 230 on the mounting accessory 220 can apply an impact force to the cavity wall of the explosion-proof cavity 430.

[0045] In one embodiment, see Figures 1 to 3 One end of the extension 210 is located on the mounting base 100, and the other end of the extension 210 extends into the explosion-proof cavity 430 through the first opening 410.

[0046] Furthermore, the extension 210 is rod-shaped and can extend into the explosion-proof cavity 430 from the first opening 410.

[0047] Please see Figures 1 to 3 In one embodiment, the mounting base 100 is provided with a vertically arranged connector, one end of the extension 210 is connected to the side wall of the connector, and the other end extends into the explosion-proof cavity 430 through the first opening 410.

[0048] Please see Figure 3 and Figure 4 In one embodiment, at least two impact members 230 are provided, and the at least two impact members 230 are arranged at circumferential intervals along the assembly 220.

[0049] By setting at least two impact members 230 spaced circumferentially along the assembly 220, impact forces are applied to different positions of the explosion-proof cavity 430, which more closely resembles the actual explosion conditions.

[0050] Furthermore, the drive device can move at least two impact members 230 that are spaced apart circumferentially along the assembly 220, so that the at least two impact members 230 can impact the explosion-proof cavity 430 in different directions to simulate actual explosion conditions.

[0051] Furthermore, at least two impactors 230 are capable of applying impact forces to different positions along the circumference of the explosion-proof cavity 430 to simulate actual explosion conditions.

[0052] Please see Figure 4In one embodiment, the assembly 220 includes an assembly ring 250, which has an assembly channel. The assembly ring 250 has at least two assembly channels that are spaced apart circumferentially along the assembly ring 250. The assembly channels pass through the inner ring surface 221 and the outer ring surface 222 of the assembly ring 250. The assembly channels are correspondingly arranged with the impact members 230. The impact members 230 are movably inserted through the assembly channels and have a transmission end 231 and an impact end 232 arranged opposite to each other. The transmission end 231 is used to drive and cooperate with the drive mechanism 300, and the impact end 232 is used to apply an impact force to the cavity wall of the explosion-proof cavity 430.

[0053] At least two assembly channels are spaced apart along the circumference of the assembly ring 250 and pass through the inner ring surface 221 and the outer ring surface 222 of the assembly ring 250, so that the impact member 230 passing through the assembly channel can reciprocate radially along the assembly ring 250. The drive mechanism 300 is used to drive the transmission end 231 to move axially along the assembly channel, so as to drive the impact end 232 to apply impact force to the cavity wall of the explosion-proof cavity 430.

[0054] Furthermore, the transmission end 231 of the impact member 230 passes through the opening in the inner ring surface 221 of the assembly channel, and the impact end 232 of the impact member 230 passes through the opening in the outer ring surface 222 of the assembly channel. In this way, by simply setting the drive mechanism 300 at the inner ring surface 221 of the assembly ring 250, it is easy to drive the transmission ends 231 of all the impact members 230, thereby driving the impact ends 232 of all the impact members 230 to apply impact force to the cavity wall of the explosion-proof cavity 430.

[0055] Understandably, the impact end 232 can be designed in different shapes or use materials of different hardness to simulate different impact effects, depending on actual needs.

[0056] Please see Figure 1 In one embodiment, the axial direction of the assembly ring 250 is parallel to the length direction of the explosion-proof cavity 430, so that the impact members 230 arranged circumferentially along the assembly ring 250 can achieve radial impact on the explosion-proof cavity 430.

[0057] Please see Figure 4 and Figure 5 In one embodiment, the transmission end 231 is provided with an abutment surface, which forms an angle with the axial direction of the impact member 230. The drive mechanism 300 includes an abutment rod 310, one end of which is provided with a wedge-shaped portion 311. The wedge-shaped portion 311 is movably inserted through the assembly ring 250 and slides in cooperation with the abutment surface.

[0058] Since the contact surface forms an angle with the axial direction of the impact member 230, when the wedge-shaped part 311 of the contact rod 310 contacts the contact surface, the wedge-shaped part 311 will slide against the contact surface, thereby enabling the impact member 230 to move along its own axial direction, so that the impact end 232 of the impact member 230 applies an impact force to the cavity wall of the explosion-proof cavity 430.

[0059] Further, please refer to Figure 1 and Figure 2 The abutment rod 310 is used to movably pass through the second opening 420 of the explosion-proof component 400. The abutment rod 310 can move along the axial direction of the second opening 420 to achieve sliding engagement with the abutment surface and drive the impact member 230 to move along its own axial direction. The abutment rod 310 can not only match the shape of the second opening 420 of the explosion-proof component 400, but also convert the axial impact into the radial impact of the impact member 230 by sliding engagement with the abutment surface of the impact member 230, thereby more closely approximating the actual explosion conditions and more accurately obtaining the explosion-proof performance of the explosion-proof component 400.

[0060] Furthermore, please refer to Figures 3 to 5 The contact surface is set towards the mating surface of the wedge-shaped part 311. When the mating surface of the wedge-shaped part 311 approaches the contact surface, the contact surface will be squeezed by the wedge-shaped part 311, so that the impact member 230 moves toward the cavity wall of the explosion-proof cavity 430, thereby converting the axial impact of the contact rod 310 into the radial impact of the impact member 230.

[0061] exist Figure 5 In the embodiment shown, the wedge-shaped portion 311 has at least two mating surfaces along its circumference, and the mating surfaces are provided in a one-to-one correspondence with the impact member 230.

[0062] Please see Figure 2 In one embodiment, the drive mechanism 300 further includes a power member 320, which is connected to the end of the abutment rod 310 away from the wedge-shaped portion 311. The power member 320 is used to drive the abutment rod 310 to move along the axial direction of the abutment rod 310.

[0063] The power component 320 can output power to the abutting rod 310 so that the abutting rod 310 can move along its own axis, thereby driving the wedge-shaped part 311 to move and abut against the abutting surface, thus converting the axial impact of the abutting rod 310 into the radial impact of the impact component 230.

[0064] Optionally, the power component 320 can be an electromagnetic drive or a high-speed hydraulic cylinder, etc.; in other embodiments, it can also be driven by combustion (e.g., by the impact generated by the controlled small gas explosion) or high-pressure gas, as long as it can drive the abutment rod 310 to generate an instantaneous axial high-speed impact force, and no specific limitation is made here.

[0065] In some embodiments, the power member 320 is disposed outside the explosion-proof component 400, and the abutment rod 310 receives the axial high-speed impact force from the power member 320 and transmits the impact force to the impact member 230. Under the sliding cooperation between the abutment surface and the wedge-shaped portion 311, the axial impact force is converted into a radial impact force, thereby applying an impact force to the cavity wall of the explosion-proof cavity 430.

[0066] Please see Figure 2 In one embodiment, the explosion-proof performance testing device further includes a force sensor 500, which is located at the end of the abutment rod 310 away from the wedge-shaped portion 311, and the power member 320 is connected to the force sensor 500.

[0067] The end of the abutment rod 310 away from the wedge-shaped part 311 is connected to the power component 320 through the force sensor 500. In this way, the impact force output by the power component 320 will be transmitted to the power component 320 through the force sensor 500, so that the force sensor 500 can directly obtain the impact force output by the power component 320. Based on the impact force data obtained by the force sensor 500, the impact force applied by the impact mechanism 200 to the explosion-proof cavity 430 is reflected, reducing errors.

[0068] Optionally, the force sensor 500 may be a piezoelectric force sensor 500, a strain gauge force sensor 500, a piezoresistive force sensor 500, etc., without specific limitations here.

[0069] Please see Figure 2 In one embodiment, the drive mechanism 300 further includes a guide member 330, which has a mounting portion and a guiding portion. The mounting portion is used to abut against the cavity wall of the explosion-proof cavity 430, and the guiding portion is guided and cooperates with the abutment rod 310.

[0070] The mounting part of the guide member 330 abuts against the cavity wall of the explosion-proof cavity 430 of the explosion-proof component 400 to achieve positioning. The guide part cooperates with the abutment rod 310 to make the movement process of the abutment rod 310 more stable, thereby improving the reliability of the explosion-proof performance testing device.

[0071] Optionally, in some embodiments, the guide member 330 can be annular, with the inner ring of the annular guide member 330 sleeved on the outer wall of the abutment rod 310 and the outer ring abutting against the cavity wall of the explosion-proof cavity 430; in other embodiments, the guide member 330 can also be rod-shaped, with one end of the rod-shaped guide member 330 having a guide hole for the abutment rod 310 to pass through, and the other end abutting against the cavity wall of the explosion-proof cavity 430.

[0072] Please see Figures 2 to 4In one embodiment, the assembly 220 further includes a support plate 240, one side of which is connected to the extension 210 and the other side of which is connected to the assembly ring 250.

[0073] The assembly ring 250 is connected to the extension 210 via the support plate 240. The support plate 240 can improve the assembly stability of the assembly ring 250 and prevent the impact effect on the cavity wall of the explosion-proof cavity 430 from being affected by the movement of the assembly ring 250.

[0074] Furthermore, one side of the assembly ring 250 is fitted against the side of the support plate 240 away from the extension 210.

[0075] In one embodiment, the explosion-proof performance testing device further includes a camera module, which is used to acquire the deformation process of the explosion-proof component 400 when subjected to impact force;

[0076] The camera module can capture the transient process of the explosion-proof component 400 when it is subjected to impact force, so that users can obtain key information such as the initiation location of the crack and the propagation path of the crack in the explosion-proof component 400.

[0077] Furthermore, the camera module uses a high-speed camera.

[0078] As an embodiment that can be implemented simultaneously with or separately from the above embodiments, the explosion-proof performance testing device further includes a strain sensing module, which is disposed on the explosion-proof component 400 and is used to obtain the deformation of the explosion-proof component 400 under impact force.

[0079] By acquiring the deformation of the explosion-proof component 400 when subjected to impact through the strain sensing module, the maximum strain, stress distribution, and weak points of the explosion-proof component 400 can be accurately obtained, thereby accurately assessing its structural strength, reliability, and explosion-proof safety performance.

[0080] Furthermore, the strain sensing module includes multiple strain gauges attached to the explosion-proof component 400.

[0081] In one embodiment, the explosion-proof performance testing device further includes a control module. The power component 320 and the force sensor 500 are both electrically connected to the control module. The control module can control the impact timing, impact energy, and waveform of the power component 320, and collect data from the force sensor 500 to obtain a force-time curve. By combining the force-time curve with the deformation process collected by the camera module, the device can comprehensively evaluate whether the explosion-proof component 400 meets the designed reliability indicators, thereby providing strong support for the optimization of the explosion-proof component 400.

[0082] In some embodiments, when it is necessary to test the explosion-proof performance of the explosion-proof component 400, the explosion-proof component 400 is first installed on the explosion-proof performance testing device, and the corresponding parameters are set. The impact mechanism 200 applies an impact force to the cavity wall of the explosion-proof cavity 430, and then the data is collected and analyzed, and finally the explosion-proof performance is evaluated.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An explosion-proof performance testing device, characterized in that, include: Mounting bracket, the mounting bracket being used for mounting explosion-proof components; An impact mechanism is provided on the mounting base and is used to be located within the explosion-proof cavity of the explosion-proof component; as well as A driving mechanism is provided, which works in conjunction with the impact mechanism to drive the impact mechanism to apply an impact force to the cavity wall of the explosion-proof cavity.

2. The explosion-proof performance testing device according to claim 1, characterized in that, The impact mechanism includes an extension, a mounting component, and an impact member. The extension is disposed on the mounting base and is used to extend into the explosion-proof cavity. The mounting component is disposed on the extension. The impact member is movably disposed on the mounting component and is used to apply an impact force to the cavity wall of the explosion-proof cavity.

3. The explosion-proof performance testing device according to claim 2, characterized in that, The impact element is provided in at least two parts, and the at least two impact elements are arranged at circumferential intervals along the assembly.

4. The explosion-proof performance testing device according to claim 3, characterized in that, The assembly includes an assembly ring with assembly channels. At least two assembly channels are provided and spaced apart circumferentially along the assembly ring. The assembly channels penetrate the inner and outer ring surfaces of the assembly ring. Each assembly channel corresponds to an impact member. The impact member is movably inserted through the assembly channel and has a transmission end and an impact end arranged opposite to each other. The transmission end is used to drive the drive mechanism, and the impact end is used to apply impact force to the cavity wall of the explosion-proof chamber.

5. The explosion-proof performance testing device according to claim 4, characterized in that, The transmission end is provided with an abutment surface, which forms an angle with the axial direction of the impact member. The driving mechanism includes an abutment rod, one end of which is provided with a wedge-shaped portion. The wedge-shaped portion is movably inserted through the assembly ring and slides in cooperation with the abutment surface.

6. The explosion-proof performance testing device according to claim 5, characterized in that, The driving mechanism further includes a power component, which is connected to the end of the abutment rod away from the wedge-shaped portion. The power component is used to drive the abutment rod to move along the axial direction of the abutment rod.

7. The explosion-proof performance testing device according to claim 6, characterized in that, The explosion-proof performance testing device also includes a force sensor, which is located at the end of the abutment rod away from the wedge-shaped part, and the power component is connected to the force sensor.

8. The explosion-proof performance testing device according to claim 5, characterized in that, The drive mechanism further includes a guide member, which has a mounting portion and a guiding portion. The mounting portion is used to abut against the cavity wall of the explosion-proof cavity, and the guiding portion is guided and cooperates with the abutment rod.

9. The explosion-proof performance testing device according to claim 4, characterized in that, The assembly also includes a support plate, one side of which is connected to the extension and the other side of which is connected to the assembly ring.

10. The explosion-proof performance testing device according to any one of claims 1-9, characterized in that, The explosion-proof performance testing device also includes a camera module, which is used to acquire the deformation process of the explosion-proof component when subjected to impact force; Or / and, the explosion-proof performance testing device further includes a strain sensing module, which is installed on the explosion-proof component and is used to obtain the deformation of the explosion-proof component under impact force.

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