Electric arc protection test device and test system for anti-interference electric arc protection face screen

Abstract

The invention belongs to the technical field of electric arc protection, and provides an anti-interference electric arc prevention surface screen electric arc protection test device and test system.The test device comprises a mounting base, a plurality of conductive steel pipes, a power supply connecting assembly, an upper electrode assembly, a lower electrode assembly and a sample placing assembly; the power supply connecting assembly comprises an upper conductive disc and a lower insulating disc, the conductive disc is provided with a first connecting terminal extending outwards, the insulating disc is provided with a second connecting terminal extending outwards, and the first connecting terminal is electrically connected with the lower electrode assembly through the conductive disc and a conductive steel pipe; the second connection terminal is electrically connected with the upper electrode assembly. According to the arc protection test device and test system for the anti-interference arc protection face screen, the arc protection performance grade of the arc protection face screen can be accurately evaluated, the test operation steps are simplified, the test operation difficulty is reduced, and the efficiency of the arc protection test and the safety of the test operation are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of arc protection, and in particular relates to an anti-interference arc protection face shield arc protection test device, and more particularly relates to an anti-interference arc protection face shield arc protection test system. Background Art

[0002] Personal arc protective equipment (PPE) refers to protective gear used to protect the human body from potential exposure to arc-related thermal hazards. Specifically, it includes arc protective clothing, arc protective masks, arc protective hoods, arc protective gloves, and arc protective shoe covers. According to the relevant provisions of the industry standard DL / T320-2019, "General Technical Requirements for Personal Arc Protective Equipment," there are corresponding requirements for the arc protection performance of PPE. Fabric arc protection performance testing and visor arc protection performance testing must be conducted according to corresponding test methods. However, there is currently no test equipment specifically designed for testing the arc protection performance of visors. Existing testing primarily relies on testing equipment for arc resistance testing of solid insulating materials. However, these general-purpose testing equipment has significant issues and defects in test conditions, evaluation methods, and simulation scenarios, such as low integration, complex test steps, and electromagnetic interference in test results. This makes it difficult to apply to arc protection performance testing of arc-proof visors. Consequently, existing arc protection performance testing of arc-proof visors suffers from long inspection cycles and inaccurate test results.

[0003] Therefore, it is necessary to design an anti-interference arc protection test device and test system for an anti-arc face shield that can at least solve some of the above problems and defects. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes an anti-interference arc protection test device and test system for arc protection visor, which can accurately evaluate the arc protection performance level of the arc protection visor, simplify the test operation steps, reduce the difficulty of the test operation, and improve the efficiency of the arc protection test and the safety of the test operation.

[0005] The technical solution of the present invention is: The present invention provides an anti-interference arc protection test device for an anti-arc face shield, comprising a mounting base, a plurality of conductive steel tubes vertically arranged on the mounting base, a power connection assembly, an upper electrode assembly, and a lower electrode assembly located at the center of the mounting base, and a sample placement assembly located inside a test space surrounded by the plurality of conductive steel tubes; The power connection assembly includes a conductive disc located above and an insulating disc located below, the conductive disc is provided with a first connecting terminal extending outward, and the insulating disc is provided with a second connecting terminal extending outward, the first connecting terminal is electrically connected to the lower electrode assembly through the conductive disc and the conductive steel pipe, and the second connecting terminal is electrically connected to the upper electrode assembly.

[0006] Preferably, the sample placement assembly includes a high-voltage insulating column seat fixedly arranged on the mounting base, a metal square box fixedly arranged on the top of the high-voltage insulating column seat, a carrying ring disk fixedly arranged on the top of the metal square box, a dummy head test unit arranged on the carrying ring disk, and an incident energy monitoring unit; The high-voltage insulating column base, metal square box, and dummy head test unit are each provided in three groups and are evenly spaced along the circumferential direction with the axis of the supporting ring disk as the center. Each group of dummy head test units is provided with two groups of incident energy monitoring units symmetrically arranged on both sides thereof, and the center angle between the incident energy monitoring unit and the corresponding dummy head test unit is 40±5°.

[0007] Preferably, the dummy head test unit includes a first mounting seat arranged on the carrying ring disk, a dummy head model fixedly arranged on the first mounting seat, and a left eye heat monitoring sensor, a right eye heat monitoring sensor, a mouth heat monitoring sensor, a chin heat monitoring sensor and a neck heat monitoring sensor fixedly arranged on the dummy head model.

[0008] Preferably, the incident energy monitoring unit includes an insulating layer frame arranged between adjacent conductive steel pipes, a fixed cantilever fixedly arranged on the insulating layer frame, and an incident energy monitoring sensor fixedly arranged at the end of the fixed cantilever; The incident energy monitoring sensor is arranged toward the central axis of the bearing ring disk, both ends of the insulating layer frame are fixedly connected to the conductive steel pipe, and adjacent insulating layer frames are connected in sequence.

[0009] Preferably, the upper electrode assembly includes an upper mounting plate, an upper electrode sleeve, an upper electrode fixing unit, and an upper trigger electrode fixedly connected in sequence from top to bottom, the upper mounting plate is fixedly arranged at the center of the insulating disc, and the upper trigger electrode is electrically connected to the second connecting terminal; The lower electrode assembly includes a lower mounting plate, a lower electrode sleeve, a lower electrode fixing unit, and a lower trigger electrode fixedly connected in sequence from bottom to top. The lower mounting plate is located at the center of the mounting base and is fixedly connected to the lower end of the conductive steel pipe. The lower trigger electrode is electrically connected to the first connecting terminal.

[0010] Preferably, the upper electrode fixing unit is provided with a tube body connected to the bottom end of the upper electrode sleeve, and the lower electrode fixing unit is provided with a tube body connected to the top end of the lower electrode sleeve, and the tube body is provided with an inserting through hole adapted to the upper trigger electrode and the lower trigger electrode; The bottom of the tube body is provided with a notch connected to the inserting through hole, and a side plate arm and a clamping handle are located at the notch. There are two side plate arms and they are arranged parallel and symmetrically on both sides of the axis of the tube body. The clamping handle is rotatably arranged between the two side plate arms.

[0011] Preferably, the clamping handle includes an eccentric end and a rotating handle that are fixedly connected, the rotation center axis of the eccentric end is not perpendicular to the axis of the tube body, the maximum distance between the eccentric end and the axis of the tube body is greater than the radius of the electrode, and the minimum distance between the eccentric end and the axis of the tube body is less than the radius of the electrode.

[0012] Preferably, the upper electrode assembly further comprises a fixed disc fixedly sleeved on the outer circumference of the upper electrode sleeve, and a plurality of supporting connecting rods connected to the fixed disc; One end of the supporting connecting rod is fixedly connected to the outer edge of the fixed disc, and the other end is fixedly connected to the conductive steel pipe.

[0013] Preferably, the present invention further provides an anti-interference arc protection test system for an anti-arc face shield, comprising: A protection test module, which includes the above-mentioned anti-interference arc protection test device for the anti-arc face shield; a power supply pressure module connected to the protection test module to apply a rated AC voltage to the protection test module; The data acquisition and analysis module is connected to the protection test module to collect arc heat data during the test, and uses regression analysis to process the collected arc heat data to obtain the arc protection level of the arc protection face shield sample.

[0014] The present invention has the following advantages and effects compared to the prior art: (1) The test space for arc protection visor test is surrounded by several conductive steel pipes, which can effectively reduce the electromagnetic force on the arc, thereby reducing and suppressing the electromagnetic interference generated by the arc electromagnetic pulse, and improving the accuracy of the visor arc protection performance level test results; (2) The power connection assembly, upper electrode assembly, lower electrode assembly, and sample placement assembly are arranged on the mounting base. The overall device has high integration and strong practicality, which is convenient for large-scale promotion and use, simplifies the operation steps of the arc protection test, and improves the efficiency of the arc protection test of the arc protection face shield; (3) The incident energy detection sensor is fixed on the conductive steel pipe through an insulating layer frame and a fixed cantilever to ensure the stability and reliability of the incident energy detection sensor during the test, facilitate the adjustment of the position of the incident energy detection sensor and the acquisition of test data, and at the same time improve the overall firmness of the conductive steel pipe to avoid large-scale shaking during the experiment; (4) An upper electrode assembly provided with an upper electrode fixing unit and a lower electrode assembly provided with a lower electrode fixing unit are used, so that the experimenter can adjust the position of the upper trigger electrode and the lower trigger electrode or replace the upper trigger electrode and the lower trigger electrode through the upper electrode fixing unit and the lower electrode fixing unit, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the anti-interference arc protection test device of the anti-arc face shield in an embodiment of the present invention; Figure 2 Schematic top view of an arc protection test device for an anti-interference arc protection panel according to an embodiment of the present invention; Figure 3 Schematic diagram of the front view of the arc protection test device of the anti-interference arc protection panel in the embodiment of the present invention; Figure 4 for Figure 1 Schematic diagram of the enlarged structure at position A in the middle; Figure 5 for Figure 1 Schematic diagram of the enlarged structure at position B in the middle; Figure 6 for Figure 1 Schematic diagram of the enlarged structure at position C in the middle.

[0016] Figure numerals: 1, mounting base; 11, insulating foot; 2, conductive steel pipe; 21, supporting inclined pipe; 3, power connection assembly; 31, conductive disc; 311, first connecting terminal; 32, insulating disc; 321, second connecting terminal; 4, upper electrode assembly; 41, upper mounting plate; 42, upper electrode sleeve; 43, upper electrode fixing unit; 44, upper trigger electrode; 45, fixing disc; 46, supporting connecting rod; 5, lower electrode assembly; 51, lower mounting plate; 52, lower electrode sleeve; 53, lower electrode fixing unit; 54, lower trigger electrode; 6, sample placement assembly; 61, high-voltage insulating column seat; 62, metal square box; 63, bearing ring disc; 631, radial spacing groove; 632, broken notch; 64, dummy head test Test unit; 641. First mounting seat; 6411. Base body; 6412. Supporting seat; 6413. Locking seat; 6414. Left clamping plate; 6415. Right clamping plate; 642. Dummy head model; 643. Left eye heat monitoring sensor; 644. Right eye heat monitoring sensor; 645. Mouth heat monitoring sensor; 646. Chin heat monitoring sensor; 647. Neck heat monitoring sensor; 65. Incident energy monitoring unit; 651. Insulation layer frame; 652. Fixed cantilever; 653. Incident energy monitoring sensor; 7. Tube body; 71. Side plate arm; 72. Clamping handle; 721. Eccentric end; 722. Rotating handle; 73. Center horizontal axis; 74. Top bolt; 75. Elastic placement clamp. DETAILED DESCRIPTION

[0017] In order to make those skilled in the art better understand the present invention, the present invention will be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0018] Example: like Figures 1 to 6 As shown, the present invention provides an anti-interference arc protection test device for an anti-arc face shield, which includes a mounting base 1, a plurality of conductive steel tubes 2 vertically arranged on the mounting base 1, a power connection assembly 3, an upper electrode assembly 4, and a lower electrode assembly 5 located at the center of the mounting base 1, and a sample placement assembly 6 located inside a test space surrounded by the plurality of conductive steel tubes 2. The plurality of conductive steel tubes 2 are evenly spaced along the circumference. Specifically, in this embodiment, six conductive steel tubes 2 are provided, and their height is 3 meters, thereby reducing the interference of electromagnetic forces on the arc, so that the arc is centered on the center line of the plurality of conductive steel tubes 2. The conductive steel tubes 2 are specifically in the shape of a "ㄈ" tube, and their upper ends are connected to the conductive disc 31 of the power connection assembly 3, and their lower ends are electrically connected to the lower electrode assembly 5.

[0019] For further reference, Figure 1 and Figure 2 As shown, the mounting base 1 is a polygonal insulating base formed by circumferentially joining several sub-bases. In this embodiment, the mounting base 1 is a dodecagonal insulating base to enhance the stability and robustness of the overall test device during the experiment and prevent significant shaking. The bottom of the mounting base 1 is provided with a plurality of insulating feet 11 spaced circumferentially to enhance the insulation and robustness of the bottom of the overall test pile device.

[0020] Combine Figure 1 and Figure 2 As shown, the power connection assembly 3 includes a conductive disc 31 located above and an insulating disc 32 located below, the conductive disc 31 is provided with a first connecting terminal 311 extending outward, and the insulating disc 32 is provided with a second connecting terminal 321 extending outward, and the top ends of several conductive steel tubes 2 are all connected to the conductive disc 31, and the upper electrode assembly 4 is fixedly arranged at the center position of the insulating disc 32, wherein the second connecting terminal 321 is electrically connected to the upper electrode assembly 4, and the first terminal is electrically connected to the lower electrode assembly 5 through the conductive disc 31 and the conductive steel tube 2.

[0021] Furthermore, the conductive steel pipe 2 is provided with an obliquely arranged supporting inclined pipe 21 near its bottom position, which serves to enhance the supporting stability of the conductive steel pipe 2 to avoid bending at the bottom bending position.

[0022] like Figure 3 As shown, the upper electrode assembly 4 includes an upper mounting plate 41, an upper electrode sleeve 42, an upper electrode fixing unit 43, and an upper trigger electrode 44 fixedly connected in sequence from top to bottom, wherein the upper mounting plate 41, the upper electrode sleeve 42, and the upper trigger electrode 44 are coaxially arranged, the upper mounting plate 41 is fixedly set at the center position of the insulating disk 32, and the upper trigger electrode 44 is electrically connected to the second connection terminal 321 through the upper electrode sleeve 42.

[0023] For further reference, Figure 1 As shown, the upper electrode assembly 4 also includes a fixed disk 45 fixedly mounted on the outer circumference of the upper electrode sleeve 42, and a plurality of support rods 46 connected to the fixed disk 45. One end of the support rod 46 is fixedly connected to the outer edge of the fixed disk 45, and the other end is fixedly connected to the conductive steel tube 2, so as to achieve enhanced support and fixation of the upper electrode assembly 4 and prevent the upper electrode assembly 4 from shaking significantly when current flows. Specifically, in this embodiment, four support rods 46 are provided. It should be noted that to improve the overall stability of the upper electrode assembly 4, the same number of support rods 46 as the number of conductive steel tubes 2 can be provided. At the same time, the support rods 46 and the fixed disk 45 are both made of hard insulating material.

[0024] like Figure 3As shown, the lower electrode assembly 5 includes a lower mounting plate 51, a lower electrode sleeve 52, a lower electrode fixing unit 53, and a lower trigger electrode 54 fixedly connected in sequence from bottom to top, wherein the lower mounting plate 51, the lower electrode sleeve 52, and the lower trigger electrode 54 are coaxially arranged, the lower mounting plate 51 is located at the center of the mounting base 1 and is fixedly connected to the lower end of the conductive steel pipe 2, and the lower trigger electrode 54 is electrically connected to the first connecting terminal 311 through the lower electrode sleeve 52, the lower mounting plate 51, the conductive steel pipe 2 and the conductive disc 31.

[0025] Combine Figure 3 and Figure 6 As shown, the upper electrode fixing unit 43 is provided with a tube body 7 connected to the bottom end of the upper electrode sleeve 42, and the lower electrode fixing unit 53 is provided with a tube body 7 connected to the top end of the lower electrode sleeve 52. The tube body 7 is provided with an inserting through hole adapted for the upper trigger electrode 44 and the lower trigger electrode 54. The inserting through hole is coaxially arranged with the tube body 7. The upper trigger electrode 44 and the lower trigger electrode 54 are respectively movably inserted into the inserting through hole. The upper trigger electrode 44 and the lower trigger electrode 54 are specifically columnar structures. A flange portion is provided at the top of the tube body 7, and a plurality of connecting screw holes are provided on the flange portion that are evenly spaced along the circumferential direction so as to connect the flange portion to the upper electrode sleeve 42 or the lower electrode sleeve 52 by connecting bolts or screws. A notch connected to the insert through hole is provided at the bottom of the tube body 7, and two side plate arms 71 fixedly connected to the tube body 7 are provided at the position of the notch. The two side plate arms 71 are parallel and symmetrically arranged on both sides of the central axis of the tube body 7. A rotatable pressing handle 72 arranged between the two side plate arms 71 is also provided at the position of the notch. The clamping handle 72 includes an eccentric end 721 and a rotating handle 722 that are fixedly connected. The rotation center axis of the eccentric end 721 is skewed and perpendicular to the axis of the tube body 7. The maximum distance between the eccentric end 721 and the axis of the tube body 7 is greater than the radius of the electrode, and the minimum distance between the eccentric end 721 and the axis of the tube body 7 is less than the radius of the electrode. The eccentric end 721 is driven to rotate by the rotating handle 722, or the upper trigger electrode 44 and the lower trigger electrode 54 inserted in the inserting through hole are squeezed and pressed to achieve the effect of fixing the electrode, or the squeezing and pressing of the upper trigger electrode 44 and the lower trigger electrode 54 are released to achieve the effect of releasing the electrode, so as to reduce the difficulty of electrode replacement and adjustment and improve the efficiency of test operation.

[0026] It should be noted that since both the upper electrode assembly 4 and the lower electrode assembly 5 use the same electrode fixing unit to fix the upper trigger electrode 44 and the lower trigger electrode 54, respectively, the electrode fixing units of the upper electrode assembly 4 and the lower electrode assembly 5 will not be described in detail here, but a unified electrode fixing unit will be used for explanation. In addition, in this embodiment, the aperture of the plug-in through hole is equal to the outer diameter of the upper trigger electrode 44 and the lower trigger electrode 54. In actual application, in order to ensure that the electrode can be movably inserted or removed from the plug-in through hole, the electrode and the plug-in through hole will have corresponding matching tolerances. The specific specifications and dimensions can be set as needed based on the outer diameter of the electrode and the aperture of the plug-in through hole and the tolerance matching table, and will not be described in detail here.

[0027] Furthermore, a central axis hole that passes through the eccentric end 721 transversely is provided at the position of the rotation center axis of the eccentric end 721, and a central horizontal axis 73 that is perpendicularly connected to the two side plate arms 71 is provided between the two side plate arms 71. The central axis hole is adapted to the central horizontal axis 73, and the eccentric end 721 is rotatably sleeved on the outer periphery of the central horizontal axis 73 through the central axis hole. Specifically, the side plate arms 71 are provided with a supporting through hole that passes through transversely, and both ends of the central horizontal axis 73 are respectively passed through the supporting through hole and extend outward, and both end portions of the central horizontal axis 73 are provided with locking nuts that are threadedly connected thereto. It should be noted that during normal use, the central horizontal axis 73 and the locking nut do not rotate with the clamping handle 72. The locking nut and the central horizontal axis 73 are only removed when the clamping handle 72 needs to be replaced or other replacement and maintenance is required. refer to Figure 6 As shown, the side plate arm 71 is also provided with a top screw hole connected to the supporting through hole and a top bolt 74 rotatably provided in the top screw hole. The top bolt 74 is threadedly engaged with the top screw hole. By rotating the top bolt 74, the end of the top bolt is abutted against the central horizontal axis 73 to achieve further fixation of the central horizontal axis 73, thereby avoiding the central horizontal axis 73 from rotating and slipping, thereby avoiding the clamping handle 72 from rotating and slipping and the resulting electrode falling off, thereby improving the stability and reliability of the clamping and clamping.

[0028] Optionally, in some embodiments, the supporting through hole is a horizontally arranged slot, that is, the cross-section of the supporting through hole is a horizontal straight slot, and the length of the slot is greater than the diameter of the central horizontal axis 73, so as to change the horizontal position of the central horizontal axis 73 in the slot, thereby changing the distance between the central horizontal axis 73 and the axis of the tube body 7, that is, changing the distance between the rotation center axis of the eccentric end 721 and the axis of the tube body 7, and then changing the maximum distance and minimum distance between the eccentric end 721 and the axis of the tube body 7, so as to change the clamping and fixing effect of the electrode. It should be noted that the horizontal position of the central horizontal axis 73 in the slot can be adjusted by rotating the top bolt 74, or the position of the central horizontal axis 73 can be adjusted by directly loosening the locking nut.

[0029] Further, such as Figure 6 As shown, the tube body 7 is also provided with an elastic placement clamp 75 fixedly connected thereto. The elastic placement clamp 75 is arranged close to the flange portion, and is specifically arranged on the outer side wall of the tube body 7 below the flange portion. The elastic placement clamp 75 is a "U"-shaped elastic clip with a narrowed opening, and the opening width of the elastic placement clamp 75 is smaller than the width of the rotating handle 722, so that the rotating handle 722 can be rotated through the opening of the elastic placement clamp 75 and placed in the elastic placement clamp 75 to achieve the limiting fixation of the rotating handle 722 and prevent the rotating handle 722 from automatically rotating downward. It should be noted that the elastic tension at the opening position of the elastic placement clamp 75 is greater than the rotational driving force generated by the gravity of the rotating handle 722 itself, so that the rotating handle 722 will not automatically fall out after being manually placed in the elastic placement clamp 75.

[0030] Combine Figure 1 、 Figure 2 and Figure 3 As shown, the sample placement assembly 6 includes a high-voltage insulating column base 61 fixedly mounted on the mounting base 1, a metal square box 62 fixedly mounted on top of the high-voltage insulating column base 61, a carrying ring disk 63 fixedly mounted on top of the metal square box 62, a dummy head test unit 64 movably mounted on the carrying ring disk 63, and an incident energy monitoring unit 65. The high-voltage insulating column base 61, the metal square box 62, and the dummy head test units 64 are each provided in three groups, and are evenly spaced along the circumference with the axis of the carrying ring disk 63 as the center. That is, the central angle between adjacent dummy head test units 64 is 120°. Each group of dummy head test units 64 is provided with two groups of incident energy monitoring units 65, and the two groups of incident energy monitoring units 65 are symmetrically arranged on both sides of the corresponding dummy head test unit 64. The central angle between the two groups of incident energy monitoring units 65 and the corresponding dummy head test unit 64 is 40±5°. It can be understood that the sample placement assembly 6 is provided with three groups of dummy head test units 64 and six groups of incident energy monitoring units 65, and they are all arranged toward the central axis of the carrying ring disk 63 (the corresponding positions of the upper trigger electrode 44 and the lower trigger electrode 54).

[0031] Furthermore, the dummy head test unit 64 can move along the radial direction of the load-bearing ring disk 63 to adjust the horizontal distance from the dummy head test unit 64 to the central axis of the load-bearing ring disk 63, that is, the horizontal distance from the dummy head test unit 64 to the center of the upper trigger electrode 44 and the lower trigger electrode 54 (the center of the arc flash). It should be noted that during the test, the upper trigger electrode 44 and the lower trigger electrode 54 are both vertically arranged at the central axis position of the load-bearing ring disk 63, and they coincide with the central axis of the load-bearing ring disk 63.

[0032] Specifically, refer to Figure 4and Figure 5 As shown, the dummy head test unit 64 includes a first mounting seat 641 set on the carrying ring disk 63, a dummy head model 642 fixedly set on the first mounting seat 641, and a left eye heat monitoring sensor 643, a right eye heat monitoring sensor 644, a mouth heat monitoring sensor 645, a chin heat monitoring sensor 646, and a neck heat monitoring sensor 647 fixedly set on the dummy head model 642, wherein the surfaces of the left eye heat monitoring sensor 643, the right eye heat monitoring sensor 644, and the mouth heat monitoring sensor 645 are located in the same plane and are all arranged toward the central axis of the carrying ring disk 63, the surface of the chin heat monitoring sensor 646 is perpendicular to the plane where the surface of the mouth heat monitoring sensor 645 is located, and the surface of the neck heat monitoring sensor 647 is parallel to the plane where the surface of the mouth heat monitoring sensor 645 is located and is arranged toward the central axis of the carrying ring disk 63. During the test, it is only necessary to install the arc protection face shield sample to be tested on the dummy head model 642.

[0033] Further, such as Figure 5 As shown, the first mounting seat 641 includes a base body 6411 disposed on the bearing ring disk 63, a supporting seat 6412 disposed on the base body 6411, and a locking seat 6413 disposed on the supporting seat 6412. The supporting seat 6412 is provided with a left clamping plate 6414 fixedly connected thereto, and the locking seat 6413 is provided with a right clamping plate 6415 fixedly connected thereto. The left clamping plate 6414 and the right clamping plate 6415 are arranged opposite to each other and are adapted to the bottom end of the dummy head model 642 so as to clamp and fix the dummy head model 642 through the left clamping plate 6414 and the right clamping plate 6415. Specifically, the left clamping plate 6414 and the right clamping plate 6415 clamp the bottom end of the dummy head model 642 via locking bolts connected to both. The locking seat 6413 is movably connected to the supporting seat 6412 so that the distance between the left clamping plate 6414 and the right clamping plate 6415 can be changed by adjusting the installation position of the locking seat 6413, thereby achieving locking, fixing or loosening of the dummy head model 642.

[0034] Combine Figure 1 and Figure 3As shown, the incident energy monitoring unit 65 includes an insulating frame 651 positioned between adjacent conductive steel tubes 2, a fixed cantilever 652 fixedly mounted on the insulating frame 651, and an incident energy monitoring sensor 653 fixedly mounted at the end of the fixed cantilever 652. The surface of the incident energy monitoring sensor 653 faces the central axis of the carrier ring 63. The upper trigger electrode 44 and the trigger electrode are both positioned at the central axis of the carrier ring 63, that is, the incident energy monitoring sensor 653 faces the upper trigger electrode 44 and the lower trigger electrode 54. During testing, the incident energy monitoring sensor 653 is not covered by the visor sample to measure the incident energy. The two ends of the insulating frame 651 are fixedly connected to the adjacent conductive steel tubes 2, and the adjacent insulating frames 651 are fixedly connected end to end, so that multiple insulating frames 651 form a fixed annular frame, further improving stability and firmness during testing and facilitating replacement or adjustment of the incident energy monitoring sensor 653. It should be noted that the above-mentioned left eye heat monitoring sensor 643, right eye heat monitoring sensor 644, mouth heat monitoring sensor 645, chin heat monitoring sensor 646, neck heat monitoring sensor 647, and incident energy monitoring sensor 653 are all sensors that can measure and detect thermal energy. In view of the fact that they are mature existing technologies in this field, their structures and principles will not be described in detail here. In addition, the surface of the above-mentioned monitoring sensor is arranged toward the central axis of the supporting ring disk 63, which specifically means that the surface of the monitoring sensor is perpendicular to the radius line from the central axis to the center of the monitoring sensor, that is, the normal of the surface of the monitoring sensor is perpendicular to the central axis.

[0035] Further, such as Figure 2 and Figure 5 As shown, the bearing ring 63 is provided with a plurality of radial distance adjustment slots 631 spaced apart along the circumferential direction, and the first mounting seat 641 is detachably provided at the position of the radial distance adjustment slot 631 and the first mounting seat 641 can move radially along the radial distance adjustment slot 631. Specifically, in this embodiment, the radial distance adjustment slot 631 includes two parallel radial through slots, and the first mounting seat 641 is provided with mounting holes adapted to the radial through slots, so that the first mounting seat 641 can be fixed at the position of the radial through slots by bolts. At the same time, when it is necessary to adjust the distance between the dummy head test unit 64 and the electrode center, it is only necessary to loosen the bolts to adjust the distance, and tighten the bolts after the adjustment is completed. Figure 1As shown, the carrier ring disk 63 is provided with a notch 632 located between two adjacent groups of incident energy monitoring units 65. This notch 632 allows test personnel to easily access the upper trigger electrode 44 and the lower trigger electrode 54 located at the center axis of the carrier ring disk 63 through the notch 632. This facilitates adjustment of the electrode spacing and installation of the ignition wire, reducing operational difficulty and improving operational convenience. Optionally, in some embodiments, the carrier ring disk 63 includes three sequentially connected sector-shaped sub-disks. Adjacent sector-shaped sub-disks are detachably linked by a connecting plate. Each sector-shaped sub-disk is provided with a group of dummy head test units 64. The detachable structural design facilitates installation, use, and disassembly for maintenance.

[0036] Optionally, in some embodiments, the present invention further provides an anti-interference arc protection test system for an anti-arc face shield, which specifically includes: a protection test module, which includes the aforementioned anti-interference arc protection test device for an anti-arc face shield; a power supply pressure module, which is connected to the protection test module to apply a rated AC voltage to the protection test module; and a data acquisition and analysis module, which is connected to the protection test module to collect arc heat data during the test and use regression analysis to process the collected arc heat data to obtain the arc protection level of the anti-arc face shield sample. Specifically, the data acquisition and analysis module collects and records data such as arc current, arc voltage, test duration, and radiant heat during the test in real time, and analyzes and processes these data to generate a test report.

[0037] During the specific test process, the arc shield sample to be tested is installed on the dummy head model 642, the distance between the upper trigger electrode 44 and the lower trigger electrode 54 is adjusted, and the ignition copper wire is installed, the main line and loop impedance are adjusted, and the power-on time is set according to the required energy; the first connection terminal 311 and the second connection terminal 321 are connected respectively through the power application module to form a power-on circuit, and a 3kV AC voltage with a fixed power-on time is applied. The current flows through the second connection terminal 321 through the upper electrode sleeve 42 and the upper trigger electrode 44, and through the first connection terminal 311 through the lower conductive disc 31, the conductive steel pipe 2, the lower electrode sleeve 52 and The lower trigger electrode 54 is connected, and a test path is formed by connecting the ignition copper wire of the upper trigger electrode 44 and the lower trigger electrode 54. An arc is generated between the upper trigger electrode 44 and the lower trigger electrode 54 to release arc energy, and the ignition copper wire is melted; the data acquisition and analysis module collects the heat data received by the left eye heat monitoring sensor 643, the right eye heat monitoring sensor 644, the mouth heat monitoring sensor 645, the chin heat monitoring sensor 646, the neck heat monitoring sensor 647, and the incident energy monitoring sensor 653, and analyzes and processes the collected heat data, calculates the arc thermal protection performance value of the sample, and generates a test report.

[0038] It should be noted that collecting accurate arc heat data is essential for accurately measuring arc protection performance. The strong electromagnetic waves generated by arcs can easily interfere with the transmission of heat data. Therefore, the data acquisition and analysis module incorporates a photoelectric signal conversion unit with optoelectronic isolation technology to convert the electrical heat data into optical signals, thereby reducing the electromagnetic interference generated by the arc. Furthermore, the analysis process utilizes single-factor binary logistic regression to investigate the numerical relationship between incident arc energy and the likelihood of burns and visor rupture, thereby improving the accuracy of predicting the visor's arc protection level.

[0039] In summary, the anti-interference arc protection test device and test system for the anti-arc face shield provided by the present invention can realize the accurate evaluation of the arc protection performance level of the anti-arc face shield, simplify the test operation steps, reduce the difficulty of the test operation, and improve the efficiency of the arc protection test and the safety of the test operation.

[0040] The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An anti-interference arc protection test device for an anti-arc face shield, characterized by: The device comprises a mounting base (1), a plurality of conductive steel tubes (2) vertically arranged on the mounting base (1), a power connection assembly (3), an upper electrode assembly (4) and a lower electrode assembly (5) located at the center of the mounting base (1), and a sample placement assembly (6) located inside a test space surrounded by the plurality of conductive steel tubes (2); The power connection assembly (3) comprises a conductive disc (31) located above and an insulating disc (32) located below, the conductive disc (31) being provided with a first connecting terminal (311) extending outward, and the insulating disc (32) being provided with a second connecting terminal (321) extending outward, the first connecting terminal (311) being electrically connected to the lower electrode assembly (5) via the conductive disc (31) and the conductive steel pipe (2), and the second connecting terminal (321) being electrically connected to the upper electrode assembly (4).

2. The anti-interference arc protection test device of the anti-arc face shield according to claim 1 is characterized in that: The sample placement assembly (6) includes a high-voltage insulating column seat (61) fixedly arranged on the mounting base (1), a metal square box (62) fixedly arranged on the top of the high-voltage insulating column seat (61), a bearing ring disk (63) fixedly arranged on the top of the metal square box (62), a dummy head test unit (64) arranged on the bearing ring disk (63), and an incident energy monitoring unit (65); The high-voltage insulating column seat (61), the metal square box (62), and the dummy head test unit (64) are each provided in three groups and are evenly spaced along the circumferential direction with the axis of the bearing ring disk (63) as the center. Each group of dummy head test units (64) is provided with two groups of incident energy monitoring units (65) symmetrically arranged on both sides thereof, and the center angle between the incident energy monitoring unit (65) and the corresponding dummy head test unit (64) is 40±5°.

3. The anti-interference arc protection test device of the anti-arc face shield according to claim 2 is characterized in that: The dummy head test unit (64) comprises a first mounting seat (641) arranged on the carrying ring disk (63), a dummy head model (642) fixedly arranged on the first mounting seat (641), and a left eye heat monitoring sensor (643), a right eye heat monitoring sensor (644), a mouth heat monitoring sensor (645), a chin heat monitoring sensor (646), and a neck heat monitoring sensor (647) fixedly arranged on the dummy head model (642).

4. The anti-interference arc protection test device of claim 2, characterized in that: The incident energy monitoring unit (65) comprises an insulating layer frame (651) arranged between adjacent conductive steel pipes (2), a fixed cantilever (652) fixedly arranged on the insulating layer frame (651), and an incident energy monitoring sensor (653) fixedly arranged at the end of the fixed cantilever (652); The incident energy monitoring sensor (653) is arranged toward the central axis of the bearing ring disk (63), both ends of the insulating layer frame (651) are fixedly connected to the conductive steel pipe (2), and adjacent insulating layer frames (651) are connected in sequence.

5. The anti-interference arc protection test device of the anti-arc face shield according to claim 1 is characterized in that: The upper electrode assembly (4) comprises an upper mounting plate (41), an upper electrode sleeve (42), an upper electrode fixing unit (43), and an upper trigger electrode (44) which are fixedly connected in sequence from top to bottom, the upper mounting plate (41) being fixedly arranged at the center of the insulating disc (32), and the upper trigger electrode (44) being electrically connected to the second connecting terminal (321); The lower electrode assembly (5) comprises a lower mounting plate (51), a lower electrode sleeve (52), a lower electrode fixing unit (53), and a lower trigger electrode (54) which are fixedly connected in sequence from bottom to top. The lower mounting plate (51) is located at the center of the mounting base (1) and is fixedly connected to the lower end of the conductive steel pipe (2). The lower trigger electrode (54) is electrically connected to the first connecting terminal (311).

6. The anti-interference arc protection test device of the anti-arc face shield according to claim 5, characterized in that: The upper electrode fixing unit (43) is provided with a tube body (7) connected to the bottom end of the upper electrode sleeve (42), and the lower electrode fixing unit (53) is provided with a tube body (7) connected to the top end of the lower electrode sleeve (52), and the tube body (7) is provided with an inserting through hole adapted to the upper trigger electrode (44) and the lower trigger electrode (54); The bottom of the tube body (7) is provided with a notch connected to the inserting through hole, and a side plate arm (71) and a pressing handle (72) are located at the notch position. The side plate arms (71) are provided with two and are arranged parallel and symmetrically on both sides of the axis of the tube body (7). The pressing handle (72) is rotatably provided between the two side plate arms (71).

7. The anti-interference arc protection test device of claim 6, characterized in that: The pressing handle (72) comprises an eccentric end (721) and a rotating handle (722) that are fixedly connected, the rotation center axis of the eccentric end (721) being perpendicular to the axis of the tube body (7) in a non-planar manner, the maximum distance between the eccentric end (721) and the axis of the tube body (7) being greater than the radius of the electrode, and the minimum distance between the eccentric end (721) and the axis of the tube body (7) being less than the radius of the electrode.

8. The arc protection test device for the anti-interference arc-proof face shield according to claim 5, characterized in that: The upper electrode assembly (4) further includes a fixed disc (45) fixedly sleeved on the outer periphery of the upper electrode sleeve (42), and a plurality of supporting connecting rods (46) connected to the fixed disc (45); One end of the supporting connecting rod (46) is fixedly connected to the outer edge of the fixed disc (45), and the other end is fixedly connected to the conductive steel pipe (2).

9. An anti-interference arc protection test system for arc shield, characterized in that: include: A protection test module, comprising the anti-interference arc protection test device of the anti-arc face shield according to any one of claims 1 to 8; a power supply pressure module connected to the protection test module to apply a rated AC voltage to the protection test module; The data acquisition and analysis module is connected to the protection test module to collect arc heat data during the test, and uses regression analysis to process the collected arc heat data to obtain the arc protection level of the arc protection face shield sample.

Images