CN113740482A - Automatic testing device for flame retardant property of helmet for firefighter and using method - Google Patents
Automatic testing device for flame retardant property of helmet for firefighter and using method Download PDFInfo
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- CN113740482A CN113740482A CN202111118046.XA CN202111118046A CN113740482A CN 113740482 A CN113740482 A CN 113740482A CN 202111118046 A CN202111118046 A CN 202111118046A CN 113740482 A CN113740482 A CN 113740482A
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 239000003063 flame retardant Substances 0.000 title claims abstract description 28
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims description 32
- 238000002485 combustion reaction Methods 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000010191 image analysis Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses an automatic testing device for flame retardant property of a fire protection helmet and a using method thereof. The device can prevent flame shake, ensure that the inner flame point of flame contacts the sample and keeps the distance stable when detecting helmet flame retardant property, realize timing, observation, judge automation, improve the environment that testing personnel are located, eliminate the jamming factor, improve test detection quality and efficiency.
Description
Technical Field
The invention belongs to the technical field of fire-fighting product detection equipment and methods, and particularly relates to an automatic fire-retardant performance testing device for a fire-fighting protective helmet and a using method of the automatic fire-retardant performance testing device.
Background
The existing helmet flame retardant performance test for firemen is carried out by manual operation, a helmet sample is placed on a standard head die, a tester holds a bunsen burner by hand, the length of flame of methane gas at a nozzle is adjusted to be 25-38 mm, the tip of the flame in the helmet sample is in contact with the front, the back and two sides of the outer edge of a helmet shell, after the flame is in contact with the helmet shell for 15s, the flame is separated, the flame of the helmet shell is required to be self-extinguished within 5s, melting and dripping phenomena are avoided, the damage length of a reflective sign band and a lower jaw band is not larger than 100mm, the continuous burning time is not larger than 2s, and the melting and dripping phenomena are avoided. Because the lamp operation of handheld this student of manual work very easily causes the flame shake, also hardly guarantee that the distance between interior flame point and the helmet shell outer edge is accurate, because outer flame and interior flame part all are not as stable in temperature and the temperature height of interior flame point, observe the burning change condition and the timing etc. of judging helmet dead ahead, dead astern and both sides simultaneously in a few seconds, very busy, can cause experimental operation and decision error, experimental detection quality and efficiency are not high, the environment that inspection personnel is located is also abominable.
Disclosure of Invention
In order to eliminate the defects, the automatic test device for the flame retardant property of the fire-fighting protective helmet and the use method are provided, so that the flame is prevented from shaking, the inner flame tip of the flame is ensured to contact with a sample and the distance is kept stable, the automation of timing, observation and judgment is realized, the environment where detection personnel are located is improved, the human interference factor is eliminated, and the test detection quality and efficiency are improved.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a fire control protection helmet fire behaviour automatic test device, includes a rotating electrical machines, a rotating electrical machines is connected with angle sensor, angle sensor is connected with vertical support bar, the vertical support bar top is connected with the head mould that is used for supporting fire control protection helmet, is provided with the combustor spout in one of them side of head mould, the combustor spout is connected with the space mobile device, the combustor spout still is connected with rotatable surveillance camera head, a rotating electrical machines, angle sensor, space mobile device and rotatable surveillance camera head are all connected with PLC display controller communication through the signal of telecommunication.
Preferably, the space moving device comprises a second rotating motor, a horizontal moving electric cylinder is connected above the second rotating motor, the horizontal moving electric cylinder is connected with a vertical moving electric cylinder, the vertical moving electric cylinder is connected with a gas conveying pipe, and the tail end of the gas conveying pipe is connected with a burner nozzle.
Preferably, the burner nozzle is provided with an electrically controlled sparking pin.
Preferably, the fuel gas conveying pipe is connected with a right-angle frame, the right-angle frame is connected with a rotatable monitoring camera, an instantaneous dynamic 3D measuring instrument is installed at the top end of the rotatable monitoring camera, and the rotatable monitoring camera and the instantaneous dynamic 3D measuring instrument are used for monitoring and measuring the flame of the combustor and the change condition and the damage length of the burnt point.
Preferably, a tray is sleeved outside the gas conveying pipe below the burner nozzle.
Preferably, one end of the fuel gas delivery pipe, which is far away from the combustion nozzle, is connected with an adjusting valve group.
Preferably, the regulating valve group comprises an electric control pressure regulating valve and an electric control switch valve which are connected in series, and the input end of the electric control switch valve is connected with the methane storage tank through a fuel gas hose.
Preferably, the instantaneous dynamic 3D measuring instrument and the regulating valve group are in communication connection with a PLC display controller, and a test control program and image analysis software are input into the PLC control display.
The second rotating motor in the space moving device works to enable the combustor to rotate, the electric cylinder horizontally moves to enable the combustor to horizontally move, the electric cylinder vertically moves to enable the combustor to vertically move, after flame of the combustor is ignited, the space moving device can accurately move the combustor to a combustion point and enable an inner flame tip of the combustion flame to contact with the combustion point, the combustor rapidly leaves after 15s, the rotatable monitoring camera and the miniature instantaneous dynamic 3D measuring instrument track the change condition of the combusted point, and the space moving device moves to a new combustion monitoring point again after the first rotating motor rotates for a set angle.
The invention also discloses a using method of the experimental device, which comprises the following steps:
1) wearing a helmet sample on a standard head die, tying a lower jaw belt light-reflecting standard belt, opening a switch valve of a methane storage tank, pressing a test starting button of a PLC display controller, and enabling each electric control component to enter a working state;
2) the rotatable monitoring camera transmits image data of the outer edge of the helmet sample shell to the PLC in real time, and the PLC determines the combustion position of the outer edge of the sample shell through image analysis according to programming;
3) the PLC display controller controls the electric control ignition needle to ignite, controls the electric control pressure regulating valve group to be conducted, and ignites flame at the nozzle of the burner;
4) when the PLC finds that the height image of the flame at the nozzle of the combustor monitored by the rotatable monitoring camera reaches a programmed specified range and is stable, the PLC controls the space moving device to work so that the inner flame tip of the flame at the nozzle of the combustor moves to a part of a corresponding sample to be combusted;
5) the PLC displays that the controller controls the space moving device to work reversely after timing the combustion of the part for 15s, and controls the electric control pressure regulating valve group to close at the same time;
6) when the inner flame tip of the flame of the nozzle of the combustor moves to a part of a sample to be combusted, the flame condition of the nozzle of the combustor is changed from tracking monitoring to tracking monitoring the condition of the combustion part of the sample by the rotatable monitoring camera according to programming, the change condition of the combustion part is always tracked and monitored by the rotatable monitoring camera in the process that the part combusts for 15s and the nozzle of the combustor leaves the part, a real-time image is transmitted to the PLC display controller, and the PLC display controller analyzes and judges according to the programming according to the image transmitted by the monitoring camera and the measurement result of the instantaneous dynamic 3D measuring instrument and makes a conclusion of a flame-retardant test of the part;
7) the PLC controls the first motor to rotate by a set angle and judges whether the first motor rotates in place according to the angle sensor;
8) repeating the steps 2 to 6, and carrying out combustion test on the rest parts of the helmet sample;
9) and after the test is finished, the PLC closes the related electric control component and sends out a video prompt.
The PLC makes the following judgment conclusion according to the flame-retardant test condition of the outer edge of the sample shell:
1) after the fire source leaves, whether the cap shell flame is self-extinguished within 5s or not and whether the melting and dripping phenomena occur or not are judged;
2) whether the damage of the reflective sign band or the lower jaw band exceeds 100mm or not and whether the time for continuous combustion exceeds 2s or not.
The invention has the advantages of
The device and the using method reduce the human interference factor to the maximum extent, improve the detection environment, solve the problem of unstable distance between the inner flame tip and the combustion part, realize the automation of timing, observation and judgment, and improve the detection quality and efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the circuit configuration of the present invention;
in the figure, 1, a first rotating motor, 2, an angle sensor, 3, a workbench, 4, a vertical supporting rod, 5, a head die, 6, a helmet sample, 7, an inner flame tip, 8, a burner nozzle, 9, a rotatable monitoring camera, 10, a right-angle frame, 11, a tray, 12, a fixing clamp, 13, a gas conveying pipe, 14, a PLC display controller, 15, a pipe bracket, 16, a vertical flange, 17, a vertical moving electric cylinder, 18, a horizontal flange, 19, a horizontal moving electric cylinder, 20, a second rotating motor, 21, an electric control pressure regulating valve, 22, a methane storage tank, 23, a lower jaw zone reflecting standard zone.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, it is to be understood that the terms "inner", "outer", "left" and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The invention discloses an automatic testing device for the flame retardant property of a fire-fighting protective helmet as shown in figure 1.A standard head model 5 is fixed at the top end of a supporting rod 4, and a fire-fighting protective helmet sample 6 for firefighters is worn on the standard head model 5. The lower end of the supporting rod 4 is connected with an angle sensor 2, and the lower part of the angle sensor is connected with a first rotating motor 1. The supporting rod is rotatably connected with the support through a bearing, the supporting rod can drive the head die sample to stably rotate in the support along the axis of the supporting rod under the driving of the first rotating motor, and the rotation of any set angle is realized through the matching of the angle sensor.
At first rotating electrical machines side-mounting second rotating electrical machines 20, the top mounting flange dish of second rotating electrical machines, at the ring flange facial make-up fixing clip, at the built-in horizontal migration electronic jar 19 of fixing clip, the end fixing of the flexible end of horizontal migration electronic jar has horizontal flange dish 18, the last mounting clip that is equipped with of horizontal flange dish, the electronic jar 17 of vertical removal is equipped with in the fixing clip, the electronic jar of horizontal migration and the electronic jar of vertical removal all are connected with servo motor separately, servo motor provides the power supply to electronic jar. The top of the flexible end of vertical removal electronic jar is fixed with perpendicular ring flange 16, is equipped with conduit saddle 15 on perpendicular ring flange 16, has welded horizontal metal nozzle pipe on the conduit saddle 15, is equipped with the horizontal right angle limit that right angle copper pipe 13 was carried in the horizontal metal nozzle pipe through the bolt fastening, and the perpendicular right angle limit that right angle copper pipe 13 was carried in the gas passes the workstation mesa and is close to helmet flame retardant property sample for the fire fighter. The vertical right-angle side of the right-angle copper pipe is conveyed through the gas and penetrates through the part above the table top of the working table, a fixing clamp is fixed, a right-angle frame 10 is welded on one side of the fixing clamp which is away from the sample 27 in the radial direction, a rotatable monitoring camera 9 is mounted at the top end of the upper right-angle side of the right-angle frame 10, an instantaneous dynamic 3D measuring instrument is arranged at the top of the rotatable camera, and the instantaneous dynamic 3D measuring instrument is used for measuring the size of a lower jaw reflecting sign belt after combustion. The right angle copper pipe is carried to the gas outside cover and is equipped with tray 11, and the molten drop thing that drops when the tray can connect the sample burning. A burner nozzle 8 is arranged above the tray, the gas drift diameter of the burner nozzle is 13mm, and an electric sparking needle is arranged on the burner nozzle.
When the second rotating motor 20 slightly rotates for a certain angle, the vertical right-angle side of the gas conveying right-angle copper pipe 13 rotates for a certain arc length with the second rotating motor 20 as a circle center, so that the edgemost position of the outer edge of the shell of the fireman helmet flame retardant performance sample 27 is determined, the working telescopic end of the horizontally moving electric cylinder extends or shortens to horizontally move the vertical right-angle side of the gas conveying right-angle copper pipe so that the burner nozzle 8 is close to or far away from the fireman helmet flame retardant performance sample, when the vertically moving electric cylinder moves up and down, the vertical right-angle side of the gas conveying right-angle copper pipe 13 drives the burner nozzle 8 to move up and down from the outer edge of the shell of the fireman helmet flame retardant performance sample, therefore, the inner flame tip 7 of the combustion flame of a certain burner nozzle can be moved to the accurate position of the outer edge of the shell of the fireman helmet flame retardant performance sample and the burner nozzle 8 rapidly leaves the combustion position after the vertical right-angle side of the vertical electric cylinder moves up and down for 15s, and the rotatable monitoring camera connected to each burner port 24 constantly monitors the changes of the corresponding part of the connected burner port and the sample to be burned.
The gas inlet of the right-angle copper pipe is connected with a special gas hose, the other end of the special gas hose is connected with an electric control pressure regulating valve group, the electric control pressure regulating valve group comprises an electric control pressure regulating valve and an electric control switch valve which are connected in series, and the input ends of the electric control pressure regulating valve and the electric control switch valve are connected with the methane storage tank 22 through the gas hose. The electric control wires of the rotary monitoring camera, the instantaneous dynamic 3D measuring instrument, the electric fire needle, the rotary motor, the electric cylinder and the electric control pressure regulating valve set are all connected with a display PLC display controller, and a test control program and image analysis software are input into the PLC 30.
The using method comprises the following steps: the firefighter helmet flame retardant performance sample is worn on a standard head die and tied with a lower jaw belt reflective standard belt, a switch valve arranged on a methane storage tank is opened, a test start button in a PLC display controller is pressed, and each electric control component enters a working state. The PLC display controller controls an electric firing needle to fire, controls an electric control switch valve in an electric control pressure regulating valve group to be switched on, controls an electric control pressure regulating valve to work to be in a programmed set value, and controls a burner nozzle to ignite flame, and controls a second rotating motor, a horizontal moving electric cylinder and a vertical moving electric cylinder to work to enable the inner flame tip of the burner nozzle flame to move to a corresponding part of the sample to be combusted, and the PLC display controller times the combustion of the part for 15s and then controls the second rotating motor to control the second rotating motor, The horizontal moving electric cylinder and the vertical moving electric cylinder work reversely, meanwhile, the PLC display controller controls the electric control switch valve connected with the nozzle of the combustor in the electric control pressure regulating valve group to be closed, when the inner flame tip of the flame of the burner nozzle moves to the part of the sample to be burnt, the rotatable monitoring camera changes the condition of flame of the burner nozzle from tracking monitoring to the condition of the burning part of the sample according to programming, the rotatable monitoring camera always tracks and monitors the change condition of the combustion part in the process that the part burns 15s and the burner nozzle leaves the part, and transmits the real-time image to the PLC controller 30, and the PLC controller 30 analyzes and determines according to the image transmitted by the monitoring camera 21 and the measurement result of the instantaneous dynamic 3D measuring instrument 37 and according to the programming, and makes a conclusion of the flame-retardant test of the part.
The PLC controls the first motor to rotate by a set angle and judges whether the first motor rotates in place according to the angle sensor; the PLC controls the inner flame tip of the flame of the nozzle 24 of the burner to move to the corresponding combustion part of the sample and leave after staying for 15s, and the PLC makes the following conditions according to the flame-retardant test condition of the outer edge of the shell of the sample:
1) after the fire source leaves, whether the cap shell flame is self-extinguished in 5s or not and whether the melting and dripping phenomena occur or not,
2) and (4) judging whether the damage of the reflective sign band or the lower jaw band exceeds 100mm or not and whether the afterflame time exceeds 2s or not. After the test, the PLC controller 30 closes the relevant electronic control components and sends out a video prompt.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a fire control protection helmet fire behaviour automatic test device, a serial communication port, including first rotating electrical machines, first rotating electrical machines is connected with angle sensor, angle sensor is connected with vertical support rod, the vertical support rod top is connected with the head mould that is used for supporting fire control protection helmet, is provided with the combustor spout in one of them side of head mould, the combustor spout is connected with the space mobile device, the combustor spout still is connected with rotatable surveillance camera head, first rotating electrical machines, angle sensor, space mobile device and rotatable surveillance camera head are all connected with PLC display controller communication through the signal of telecommunication.
2. The automatic testing device for the flame retardant property of the fire-fighting protective helmet as recited in claim 1, characterized in that a tray is sleeved outside the gas delivery pipe below the burner nozzle.
3. The automatic testing device for the flame retardant property of the fire-fighting protection helmet according to claim 1, wherein the space moving device comprises a second rotating motor, a horizontal moving electric cylinder is connected above the second rotating motor, a vertical moving electric cylinder is connected with the horizontal moving electric cylinder, a gas conveying pipe is connected with the vertical moving electric cylinder, and the tail end of the gas conveying pipe is connected with a burner nozzle.
4. The automatic testing device for the flame retardant property of the fire-fighting protection helmet as recited in claim 3, wherein the burner nozzle is provided with an electrically controlled fire-striking needle.
5. The automatic testing device for the flame retardant property of the fire-fighting protection helmet as recited in claim 4, wherein the gas delivery pipe is connected with a right-angle stand, the right-angle stand is connected with a rotatable monitoring camera, an instantaneous dynamic 3D measuring instrument is mounted at the top end of the rotatable monitoring camera, and the rotatable monitoring camera and the instantaneous dynamic 3D measuring instrument are used for monitoring and measuring the change situation and the damage length of the flame and the burned point position of the burner.
6. The automatic testing device for the flame retardant property of the fire-fighting protection helmet as recited in claim 5, wherein an electrically controlled regulating valve set is connected to an end of the gas delivery pipe away from the combustion nozzle.
7. The automatic testing device for the flame retardant property of the fire-fighting protection helmet as recited in claim 6, wherein the regulating valve set comprises an electrically controlled pressure regulating valve and an electrically controlled switch valve which are connected in series, and the input end of the electrically controlled switch valve is connected with the methane storage tank through a gas hose.
8. The automatic testing device for the flame retardant property of the fire-fighting protection helmet as recited in claim 6, wherein the instantaneous dynamic 3D measuring instrument and the regulating valve set are both in communication connection with a PLC display controller, and a test control program and an image analysis software are input into the PLC control display.
9. The use method of the automatic testing device for the flame retardant property of the fire-fighting protective helmet according to claim 8 comprises the following steps:
wearing a helmet sample on a standard head die, tying a lower jaw belt light-reflecting standard belt, opening a switch valve of a methane storage tank, pressing a test starting button of a PLC display controller, and enabling each electric control component to enter a working state;
the rotatable monitoring camera transmits image data of the outer edge of the helmet sample shell to the PLC in real time, and the PLC determines the combustion position of the outer edge of the sample shell through image analysis according to programming;
the PLC display controller controls the electric control ignition needle to ignite, controls the electric control pressure regulating valve group to be conducted, and ignites flame at the nozzle of the burner;
when the PLC finds that the height image of the flame at the nozzle of the combustor monitored by the rotatable monitoring camera reaches a programmed specified range and is stable, the PLC controls the space moving device to work so that the inner flame tip of the flame at the nozzle of the combustor moves to a part of a corresponding sample to be combusted;
the PLC displays that the controller controls the space moving device to work reversely after timing the combustion of the part for 15s, and controls the electric control pressure regulating valve group to close at the same time;
when the inner flame tip of the flame of the nozzle of the combustor moves to a part of a sample to be combusted, the flame condition of the nozzle of the combustor is changed from tracking monitoring to tracking monitoring the condition of the combustion part of the sample by the rotatable monitoring camera according to programming, the change condition of the combustion part is always tracked and monitored by the rotatable monitoring camera in the process that the part combusts for 15s and the nozzle of the combustor leaves the part, a real-time image is transmitted to the PLC display controller, and the PLC display controller analyzes and judges according to the programming according to the image transmitted by the monitoring camera and the measurement result of the instantaneous dynamic 3D measuring instrument and makes a conclusion of a flame-retardant test of the part;
the PLC controls the first motor to rotate by a set angle and judges whether the first motor rotates in place according to the angle sensor;
repeating the steps 2 to 6, and carrying out combustion test on the rest parts of the helmet sample;
and after the test is finished, the PLC closes the related electric control component and sends out a video prompt.
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| CN202111118046.XA CN113740482A (en) | 2021-09-24 | 2021-09-24 | Automatic testing device for flame retardant property of helmet for firefighter and using method |
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| CN202111118046.XA CN113740482A (en) | 2021-09-24 | 2021-09-24 | Automatic testing device for flame retardant property of helmet for firefighter and using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114563524A (en) * | 2022-02-15 | 2022-05-31 | 济南市工程质量与安全中心 | Automatic testing device for flame retardance of escape respirator |
| CN115656265A (en) * | 2022-10-21 | 2023-01-31 | 山东省产品质量检验研究院 | Arc protection integrated test system for arc-proof fabric and control method thereof |
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