A test assembly for arc testing of a face shield sample

Abstract

This utility model belongs to the technical field of arc protection testing equipment, and provides a test assembly for arc testing of face shield samples. It includes a support ring disk, and a dummy head test unit and an incident energy monitoring unit that are radially movable and mounted on the support ring disk. The dummy head test units are arranged in three groups, evenly spaced along the circumference with the axis of the support ring disk as the center. Each group of dummy head test units has two groups of incident energy monitoring units symmetrically arranged on both sides, and the center angle between the incident energy monitoring unit and the corresponding dummy head test unit is 40±5°. The test assembly for arc testing of face shield samples provided by this utility model has a simple structure and is easy to use, reducing the difficulty of installing and positioning the face shield sample during testing, simplifying the testing operation steps, and thus improving the efficiency of face shield arc testing.

Description

Technical Field

[0001] This utility model belongs to the technical field of arc protection testing equipment, and specifically relates to a test component for arc testing of face shield samples. Background Technology

[0002] Personal arc flash protection equipment refers to protective gear used to protect the human body from potential exposure to arc-related thermal hazards. Specifically, it includes arc flash protective clothing, arc flash protective face shields, arc flash protective headgear, arc flash protective gloves, and arc flash protective shoe covers. According to the relevant provisions in the industry standard DL / T320-2019 "General Technical Requirements for Personal Arc Flash Protective Equipment," there are corresponding requirements for the arc flash protection performance of personal arc flash protective equipment, requiring testing of the arc flash protection performance of the fabric and the face shield according to appropriate test methods.

[0003] However, there is currently no dedicated testing equipment for testing the arc protection performance of face shields. Furthermore, according to the standard for testing the arc protection performance of face shields, the test should use at least 24 material samples. During the test, three samples are placed on three corresponding standard dummy heads, with the three standard dummy heads evenly distributed at 120° intervals on a circle, and the upper and lower electrodes for testing located at the center of this circle. This requires a considerable amount of time to fix and position the standard dummy heads in the early stages of the test, especially when it is necessary to change or adjust the distance between the face shield sample and the electrode center to conduct different arc protection levels. This often results in a significant time commitment to adjusting the position of the standard dummy heads, severely impacting the efficiency of the arc testing.

[0004] Therefore, it is necessary to design a test assembly for arc testing of surface-mounted screen samples that can at least solve some of the above problems and defects. Summary of the Invention

[0005] To address the above-mentioned technical problems, this invention proposes a test assembly for arc testing of face shield samples. This assembly is simple in structure and easy to use, reducing the difficulty of installing and positioning the face shield sample during testing, simplifying the testing procedures, and thus improving the efficiency of face shield arc testing.

[0006] The technical solution of this utility model is: This utility model proposes a test assembly for testing electric arc on a face shield sample, including a support ring disk, and a dummy head test unit and an incident energy monitoring unit that are radially movable and set on the support ring disk. The dummy head test unit is provided in three groups and is evenly distributed around the axis of the supporting ring disk in the circumferential direction. Each group of dummy head test units is provided with two groups of incident energy monitoring units symmetrically arranged on both sides of it, 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 testing unit includes a first mounting base disposed on the bearing ring disk, a dummy head model fixedly disposed on the first mounting base, and a left eye thermal monitoring sensor, a right eye thermal monitoring sensor, a mouth thermal monitoring sensor, a chin thermal monitoring sensor, and a neck thermal monitoring sensor fixedly disposed on the dummy head model. The incident energy monitoring unit includes a second mounting base disposed on the bearing ring disk, and an incident energy monitoring sensor fixedly disposed on the second mounting base.

[0008] Preferably, the surfaces of the left eye thermal monitoring sensor, the right eye thermal monitoring sensor, and the mouth thermal monitoring sensor are located on the same plane and are all arranged towards the axis of the support ring disk. The surface of the chin thermal monitoring sensor is perpendicular to the surface of the mouth thermal monitoring sensor. The surface of the neck thermal monitoring sensor is parallel to the surface of the mouth thermal monitoring sensor and is arranged towards the axis of the support ring disk. The surface of the incident energy monitoring sensor is arranged towards the axis of the support ring disk.

[0009] Preferably, the first mounting base includes a base body disposed on the bearing ring plate, a support seat disposed on the base body, and a locking seat disposed on the support seat; The support seat is provided with a left clamping plate fixedly connected thereto, and the locking seat is provided with a right clamping plate fixedly connected thereto. The left clamping plate and the right clamping plate are arranged opposite to each other to clamp and fix the dummy head model.

[0010] Preferably, the bearing ring is provided with a plurality of radially adjustable grooves spaced apart along the circumferential direction, the first mounting seat and the second mounting seat are located at the radially adjustable grooves, and the first mounting seat and the second mounting seat can move radially along the radially adjustable grooves.

[0011] Preferably, the bearing ring disk is provided with a notch, and the notch is located between two adjacent sets of incident energy monitoring units.

[0012] Preferably, the bearing ring includes three sector-shaped sub-discs connected in sequence, and adjacent sector-shaped sub-discs are detachably connected by a connecting plate. Each sector-shaped sub-disc is provided with a set of dummy head test units and two sets of incident energy monitoring units.

[0013] This utility model has the following advantages and effects compared with the prior art: (1) A dummy head test unit and incident energy monitoring unit that can move radially along the bearing ring are adopted. The distance between the dummy head test unit and incident energy monitoring unit and the central axis (electrode center) can be adjusted as needed to facilitate different face shield arc test experiments as needed. Since the angle does not change, only the distance needs to be adjusted, which reduces the difficulty and steps of fixed positioning, improves the convenience of test operation and the efficiency of test, and ensures that the test conditions meet the standard requirements, thereby improving the accuracy and reliability of test results. (2) A bearing ring disk with a notch is used, and the notch is located between adjacent incident energy monitoring units, which makes it convenient for test personnel to operate through the notch, such as installing and fixing the faceplate sample, adjusting the distance between the upper and lower electrodes, installing the ignition copper wire, and performing maintenance, thereby improving the convenience of test operation. (3) The first and second mounting bases are detachably connected to the bearing ring disk, which makes it easy to change the distance between the dummy head test unit and the incident energy monitoring unit and the electrode center by adjusting the distance between the first and second mounting bases and the central axis, so as to meet different face shield arc test requirements. At the same time, it is easy to check or replace the corresponding dummy head test unit or incident energy monitoring unit, and improve the convenience of installation, use and maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the test assembly for arc testing of the face shield sample in this embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the dummy head test unit in the test assembly for arc testing of the face shield sample in this embodiment of the present invention; Figure 3 This is another structural schematic diagram of the dummy head test unit in the test assembly for arc testing of the face shield sample in this embodiment of the present invention.

[0015] Reference numerals: 1. Bearing ring; 11. Radial adjustment groove; 12. Notch; 13. Sub-disc body; 2. Dummy head test unit; 21. First mounting base; 211. Base body; 212. Support seat; 213. Locking seat; 214. Left clamping plate; 215. Right clamping plate; 22. Dummy head model; 23. Left eye thermal monitoring sensor; 24. Right eye thermal monitoring sensor; 25. Mouth thermal monitoring sensor; 26. Chin thermal monitoring sensor; 27. Neck thermal monitoring sensor; 3. Incident energy monitoring unit; 31. Second mounting base; 32. Incident energy monitoring sensor; 4. Connecting plate. Detailed Implementation

[0016] To enable those skilled in the art to better understand this utility model, it will now be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this utility model.

[0017] Example: like Figures 1-3 As shown, this utility model provides a test assembly for arc testing of a face shield sample, which includes a support ring disk 1 and movable dummy head test units 2 and incident energy monitoring units 3 disposed on the support ring disk 1. The dummy head test units 2 are arranged in three groups, and the three groups of dummy head test units 2 are evenly spaced along the circumference with the axis of the support ring disk 1 as the center. That is, the included angle between the centers of adjacent dummy head test units 2 is 120°. Each group of dummy head test units 2 is provided with two groups of incident energy monitoring units 3, and the two groups of incident energy monitoring units 3 are symmetrically arranged on both sides of the corresponding dummy head test unit 2. The included angle between the centers of the two groups of incident energy monitoring units 3 and the corresponding dummy head test unit 2 is 40±5°. It can be understood that a total of three groups of dummy head test units 2 and six groups of incident energy monitoring units 3 are disposed on the support ring disk 1, and they are all arranged facing the central axis (electrode center) of the support ring disk 1.

[0018] refer to Figure 1 As shown, both the dummy head testing unit 2 and the incident energy monitoring unit 3 can move along the radial direction of the bearing ring disk 1 to adjust the horizontal distance between the dummy head testing unit 2 and the incident energy monitoring unit 3 and the central axis of the bearing ring disk 1, that is, the horizontal distance between the dummy head testing unit 2 and the incident energy monitoring unit 3 and the center of the electrode. It should be noted that during the test, the arc electrode is vertically set at the central axis of the bearing ring disk 1 and coincides with the central axis of the bearing ring disk 1. Since it is a mature existing technology, its specific structure will not be shown here.

[0019] Combination Figure 1 and Figure 2As shown, the dummy head testing unit 2 includes a first mounting base 21 disposed on a support ring disk 1, a dummy head model 22 fixedly disposed on the first mounting base 21, and a left eye thermal monitoring sensor 23, a right eye thermal monitoring sensor 24, a mouth thermal monitoring sensor 25, a chin thermal monitoring sensor 26, and a neck thermal monitoring sensor 27 fixedly disposed on the dummy head model 22. The surfaces of the left eye thermal monitoring sensor 23, the right eye thermal monitoring sensor 24, and the mouth thermal monitoring sensor 25 are located on the same plane and are all arranged facing the central axis of the support ring disk 1. The surface of the chin thermal monitoring sensor 26 is perpendicular to the plane containing the surface of the mouth thermal monitoring sensor 25. The surface of the neck thermal monitoring sensor 27 is parallel to the plane containing the surface of the mouth thermal monitoring sensor 25 and is arranged facing the central axis of the support ring disk 1. During the test, the arc-proof face shield sample to be tested only needs to be mounted on the dummy head model 22.

[0020] Further reference Figure 2 and Figure 3 As shown, the first mounting base 21 includes a base body 211 disposed on the bearing ring 1, a support seat 212 disposed on the base body 211, and a locking seat 213 disposed on the support seat 212. The support seat 212 is provided with a left clamping plate 214 fixedly connected thereto, and the locking seat 213 is provided with a right clamping plate 215 fixedly connected thereto. The left clamping plate 214 and the right clamping plate 215 are arranged opposite to each other and are adapted to the bottom end of the dummy head model 22, so as to clamp and fix the dummy head model 22 through the left clamping plate 214 and the right clamping plate 215. Specifically, in this embodiment, the left clamping plate 214 and the right clamping plate 215 are clamped to the bottom of the dummy head model 22 by locking bolts connected to both. The locking seat 213 is movably connected to the support seat 212 so that the distance between the left clamping plate 214 and the right clamping plate 215 can be changed by adjusting the installation position of the locking seat 213, thereby achieving the locking and fixing or loosening and releasing of the dummy head model 22.

[0021] like Figure 1 As shown, the incident energy monitoring unit 3 includes a second mounting base 31 disposed on the bearing ring disk 1 and an incident energy monitoring sensor 32 fixedly disposed on the second mounting base 31. The surface of the incident energy monitoring sensor 32 is arranged facing the central axis of the bearing ring disk 1. During the test, the incident energy monitoring sensor 32 is not covered by the face shield sample so as to measure the incident energy.

[0022] It should be noted that the aforementioned left eye thermal monitoring sensor 23, right eye thermal monitoring sensor 24, mouth thermal monitoring sensor 25, chin thermal monitoring sensor 26, neck thermal monitoring sensor 27, and incident energy monitoring sensor 32 are all sensors capable of thermal energy measurement and detection. Given that these are mature existing technologies in this field, their structure and principles will not be elaborated upon further here. Furthermore, the arrangement of the monitoring sensor surfaces facing the central axis of the bearing ring disk 1 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 to the surface of the monitoring sensor is perpendicular to the central axis.

[0023] Further reference Figure 1 As shown, the bearing ring 1 is provided with several radially adjustable grooves 11 spaced apart along the circumference. The first mounting base 21 and the second mounting base 31 are detachably mounted at the positions of the radially adjustable grooves 11, and the first mounting base 21 and the second mounting base 31 can move radially along the radially adjustable grooves 11. Specifically, in this embodiment, the radially adjustable grooves 11 include two parallel radial through grooves. The first mounting base 21 and the second mounting base 31 are both provided with mounting holes that are adapted to the radial through grooves, so that the first mounting base 21 and the second mounting base 31 can be fixed at the positions of the radial through grooves by bolts. At the same time, when it is necessary to adjust the distance between the dummy head test unit 2 and the incident energy monitoring unit 3 and the electrode center, it is only necessary to loosen the bolts to adjust the distance, and then tighten the bolts after the adjustment is completed.

[0024] like Figure 1 As shown, the bearing ring disk 1 is provided with a notch 12, which is located between two adjacent sets of incident energy monitoring units 3, so that the test personnel can approach the electrode located at the central axis of the bearing ring disk 1 through the notch 12, thereby adjusting the electrode spacing and installing the ignition copper wire, reducing the difficulty of operation and improving the convenience of operation.

[0025] Furthermore, the bearing ring disk 1 includes three sector-shaped sub-discs 13 connected in sequence. Adjacent sector-shaped sub-discs 13 are detachably connected by a connecting plate 4. Each sector-shaped sub-disc 13 is equipped with a set of dummy head test units 2 and two sets of incident energy detection units. The detachable structural design facilitates installation, use, disassembly, and maintenance.

[0026] Furthermore, it should be noted that although the technical solution of this application only specifically mentions the testing of anti-arc face shield samples, this application also applies to testing of other face or head protection products such as safety glasses or goggles, and should not be regarded as a limitation of this application.

[0027] In summary, the test assembly for arc testing of face shield samples provided by this utility model has a simple structure and is easy to use. It reduces the difficulty of installing and positioning face shield samples during the test process, simplifies the test operation steps, and thus improves the efficiency of face shield arc testing.

[0028] The above are merely preferred embodiments of the present utility model and do not limit the patent scope of the present utility model. All equivalent changes and modifications made within the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A test assembly for a faceplate sample arc test, characterized by: It includes a support ring disk (1), and a dummy head test unit (2) and an incident energy monitoring unit (3) that are radially movable and set on the support ring disk (1). The dummy head test unit (2) is provided in three groups and is evenly distributed along the circumferential direction with the axis of the bearing ring (1) as the center. Each dummy head test unit (2) is provided with two groups of incident energy monitoring units (3) symmetrically arranged on both sides of it, and the center angle between the incident energy monitoring unit (3) and the corresponding dummy head test unit (2) is 40±5°.

2. The faceplate sample arc testing test assembly of claim 1, wherein: The dummy head testing unit (2) includes a first mounting base (21) disposed on the bearing ring disk (1), a dummy head model (22) fixedly disposed on the first mounting base (21), and a left eye thermal monitoring sensor (23), a right eye thermal monitoring sensor (24), a mouth thermal monitoring sensor (25), a chin thermal monitoring sensor (26), and a neck thermal monitoring sensor (27) fixedly disposed on the dummy head model (22). The incident energy monitoring unit (3) includes a second mounting base (31) disposed on the bearing ring disk (1) and an incident energy monitoring sensor (32) fixedly disposed on the second mounting base (31).

3. The faceplate sample arc testing test assembly of claim 2, wherein: The surfaces of the left eye heat monitoring sensor (23), the right eye heat monitoring sensor (24), and the mouth heat monitoring sensor (25) are located on the same plane and are all arranged toward the axis of the support ring disk (1). The surface of the chin heat monitoring sensor (26) is perpendicular to the surface of the mouth heat monitoring sensor (25). The surface of the neck heat monitoring sensor (27) is parallel to the surface of the mouth heat monitoring sensor (25) and is arranged toward the axis of the support ring disk (1). The surface of the incident energy monitoring sensor (32) is arranged toward the axis of the support ring disk (1).

4. The faceplate sample arc testing test assembly of claim 2, wherein: The first mounting base (21) includes a base body (211) disposed on the bearing ring (1), a support seat (212) disposed on the base body (211), and a locking seat (213) disposed on the support seat (212). The support (212) is provided with a left clamping plate (214) fixedly connected thereto, and the locking seat (213) is provided with a right clamping plate (215) fixedly connected thereto. The left clamping plate (214) and the right clamping plate (215) are arranged opposite to each other to clamp and fix the dummy head model (22).

5. The faceplate sample arc testing test assembly of claim 2, wherein: The bearing ring disk (1) is provided with a plurality of radial adjustment slots (11) spaced apart along the circumference. The first mounting seat (21) and the second mounting seat (31) are located at the radial adjustment slots (11), and the first mounting seat (21) and the second mounting seat (31) can move radially along the radial adjustment slots (11).

6. The faceplate sample arc testing test assembly of claim 1, wherein: The bearing ring disk (1) is provided with a notch (12), which is located between two adjacent sets of incident energy monitoring units (3).

7. The faceplate sample arc testing test assembly of claim 1, wherein: The bearing ring disc (1) comprises three fan-shaped sub-disc bodies (13) connected in sequence, and adjacent fan-shaped sub-disc bodies (13) are detachably connected through connecting plates (4), and each fan-shaped sub-disc body (13) is provided with a group of dummy head test units (2) and two groups of incident energy monitoring units (3).

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