CN115267043B - Testing system and method applied to fire blanket of electric automobile - Google Patents
Testing system and method applied to fire blanket of electric automobile Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- 238000009413 insulation Methods 0.000 claims abstract description 24
- 239000000779 smoke Substances 0.000 claims abstract description 23
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 230000002265 prevention Effects 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 61
- 238000002485 combustion reaction Methods 0.000 claims description 31
- 238000002474 experimental method Methods 0.000 claims description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 17
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 17
- 239000003915 liquefied petroleum gas Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003063 flame retardant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000005341 toughened glass Substances 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0813—Measuring intrusion, e.g. of mercury
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Abstract
The invention discloses a testing system and a testing method for a fire blanket applied to an electric automobile. The system comprises a clamping device, a fireproof testing device, a heat insulation testing device, an antiknock testing device, a smoke control testing device, a data acquisition device and a control device, wherein the clamping device is used for clamping a fire blanket to be detected; the fire prevention testing device, the heat insulation testing device, the antiknock testing device and the smoke control testing device are respectively used for detecting the fire prevention, heat insulation, antiknock and smoke control effects of the fire blanket to be detected; the data acquisition device is used for shooting the burning phenomena of the fire blanket to be detected under different time nodes, wherein the burning phenomena are fire, burning through and melting; the device is used for shooting an image of the steel balls emitted by the steel ball emitting device after acting on the fire blanket to be detected; the control device is used for controlling and analyzing. The invention can effectively test the fireproof, heat-insulating, explosion-proof and smoke-controlling effects of the fire blanket applied to the electric automobile and improve the safety of the fire blanket in use.
Description
Technical Field
The invention relates to the technical field of electric automobile peripheral products, in particular to a testing system and a testing method for a fire blanket applied to an electric automobile.
Background
Fire blankets are flexible sheet materials used to extinguish small area fires at the beginning. According to different base fabrics, the fire blanket is divided into pure cotton fire blanket, ceramic fire blanket, glass fiber fire blanket and the like; according to the application, the fire blanket can be divided into a household fire blanket and an industrial fire blanket.
The new energy electric automobile fire blanket is a special fire extinguishing blanket for electric automobile, and because of the characteristics of electric automobile fire: (1) The oil fire temperature is about 800 ℃, and the battery combustion temperature exceeds 1000 ℃; (2) the fire of the battery spreads fast; (3) The battery burns for a long time and possibly explodes to damage the surroundings, so that the new energy electric automobile fire blanket needs to play roles of fire prevention, heat insulation, smoke prevention and explosion resistance to isolate the train from the surroundings to prevent the occurrence of a chain fire. The fire-retardant performance test is to use flame generated by a specified igniter to ignite the bottom edge center of a sample in the vertical direction, after the specified ignition time (only a few seconds), the continuous combustion time, smoldering time and damage length of the sample are measured, the ignition time is 12 seconds, edible oil is used when the fire-retardant performance is tested, and the fire-retardant performance test is not suitable for the condition of the ignition environment of an electric automobile far away from the ignition time and the oil fire temperature, and has no test of heat insulation, smoke prevention and anti-explosion effects. Therefore, a need exists for a fire blanket testing system and method suitable for use in electric vehicles that provides fire protection, thermal insulation, smoke protection and antiknock detection.
Disclosure of Invention
In order to solve the technical problems, the invention provides a testing system and a testing method for a fire blanket applied to an electric automobile, which can effectively test the fire prevention, heat insulation, explosion prevention and smoke control effects of the fire blanket applied to the electric automobile and improve the safety of the fire blanket during use.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a test system for a fire blanket for an electric vehicle, comprising: the device comprises a clamping device, a fireproof testing device, a heat insulation testing device, an antiknock testing device, a smoke control testing device, a data acquisition device and a control device,
the clamping device is used for clamping the fire blanket to be detected;
the fire prevention testing device comprises a burner, a liquefied petroleum gas tank and an air compressor, wherein the fire blanket to be detected is horizontally arranged above the burner through a clamping device, the burner is respectively connected with a first branch pipe and a second branch pipe through a main pipeline, the first branch pipe is sequentially connected with a first flowmeter, a first pressure gauge, a first valve and the air compressor, and the second branch pipe is sequentially connected with a second flowmeter, a second pressure gauge, a second valve and the liquefied petroleum gas tank;
the heat insulation testing device comprises a heater, 3 temperature sensors and a plurality of temperature recorders which are respectively connected with the 3 temperature sensors, wherein the fire blanket to be detected is horizontally arranged at the position 20cm below the heater through a clamping device, and the 3 temperature sensors are respectively used for detecting the temperatures of the upper surface, the lower surface and the position 20cm below the fire blanket to be detected;
the anti-explosion testing device comprises a steel ball emission device and a protective wall, and the fire blanket to be detected is vertically arranged between the steel ball emission device and the protective wall through a clamping device;
the smoke control testing device comprises a gas cylinder, a third valve, a third pressure gauge, a third flowmeter, an experiment cabin, a gas pump and a gas analyzer which are sequentially connected through pipelines, wherein the fire blanket to be detected is detachably fixed in the experiment cabin and divides the experiment cabin into two independent spaces;
the data acquisition device is used for shooting the burning phenomena of the fire blanket to be detected under different time nodes, wherein the burning phenomena are fire, burning through and melting; and the device is used for shooting an image of the steel balls emitted by the steel ball emitting device after acting on the fire blanket to be detected;
the control device is in communication connection with the first flowmeter, the first pressure gauge, the first valve, the air compressor, the second flowmeter, the second pressure gauge, the second valve, the multi-path temperature recorder, the third valve, the third pressure gauge, the third flowmeter, the data acquisition device and the gas analyzer.
Preferably, the clamping device comprises a support frame and a photo frame clamp connected with the support frame, and the photo frame clamp is connected with the support frame through bolts.
Preferably, the automatic combustion device further comprises a combustion table and a lifting table, wherein the burner is fixedly arranged on the combustion table, and an automatic lifting table is arranged below the combustion table.
Preferably, the heater is a cone calorimeter radiant heater.
Preferably, the distance between the steel ball transmitting device and the clamping device is 1 meter, the transmitting speed of the steel ball transmitting device is 65-80 m/s, and the mass of the steel ball in the steel ball transmitting device is 40-50 g.
Preferably, the data acquisition device is a high-speed camera.
The test method of the fire blanket applied to the electric automobile comprises the following steps:
and (3) fireproof performance detection: opening an air compressor, a first valve and a second valve to mix air with liquefied petroleum gas in a liquefied petroleum gas tank in a main pipeline according to a preset proportion; when the flame temperature of the burner reaches 1200 ℃, horizontally placing the fire blanket to be detected above the burner, collecting combustion phenomenon images of the fire blanket to be detected at 10min, 30min and 60min, and sending the combustion phenomenon images to a control device, wherein the combustion phenomena are firing, burning through and melting, and the fireproof performance of the fire blanket to be detected is determined according to the combustion phenomenon images of different time nodes;
and (3) detecting heat insulation performance: the method comprises the steps of opening a heater positioned above a horizontally arranged fire blanket to be detected, roasting the fire blanket to be detected for 60 minutes, acquiring the temperatures of the upper surface, the lower surface and the position 20cm below the fire blanket to be detected, sending temperature information to a control device, outputting qualified heat insulation performance if the temperature of the lower surface is not more than 200 ℃ and the temperature of the position 20cm below the lower surface is not more than 70 ℃, otherwise, outputting unqualified heat insulation performance and giving an alarm;
and (3) antiknock performance detection: starting a steel ball emission device to continuously emit steel balls to a fire blanket to be detected, collecting images after the steel balls strike the fire blanket to be detected each time and sending the images to a control device, judging whether the fire blanket in the images is good or not, outputting qualified antiknock performance if the fire blanket is good after continuous detection is carried out for 30 times, otherwise, outputting unqualified and giving an alarm;
and (3) detecting smoke control performance: the fire blanket to be detected is detachably fixed in the experiment cabin and is divided into two independent spaces, a third valve is opened, carbon monoxide gas in a gas cylinder is injected into one space in the experiment cabin, an air pump is opened, gas in the other space in the experiment cabin is pumped into a gas analyzer, the third valve is closed after 3min, the gas analyzer sends the detected concentration of the second carbon monoxide gas to a control device, and if the concentration value of the second carbon monoxide gas is not more than 0.1%, the output smoke control performance is qualified; otherwise, the output is unqualified and an alarm is sent out.
Preferably, before the fire blanket to be detected is detachably fixed in the experiment cabin and the experiment cabin is divided into two independent spaces, the method further comprises the following steps:
opening a third valve to enable carbon monoxide gas in the gas cylinder to be injected into the closed experiment cabin, opening the gas pump to pump the gas in the experiment cabin into the gas analyzer, closing the third valve after 3min, and sending the detected first carbon monoxide gas concentration to the control device by the gas analyzer; the gas analyzer was allowed to draw in fresh air until the reading stabilized to the original state.
Preferably, the method further comprises the following steps:
the burner is placed on the combustion table, and the height of the burner is adjusted through the automatic lifting table based on the horizontal height of the fire blanket to be detected.
Preferably, the launching speed of the steel ball launching device is 65-80 m/s, and the mass of the steel ball is 40-50 g.
Based on the technical scheme, the invention has the beneficial effects that: the method can effectively test the fireproof, heat-insulating, explosion-proof and smoke-controlling effects of the fire blanket applied to the electric automobile, has higher requirements, is more novel in mode, and can be used for simulating the scene to be more fit with the real environment of the fire disaster of the electric automobile, the blank of the method for testing the fire blanket of the electric automobile is made up, the suitability of the fire blanket of the electric automobile can be directly detected by adopting the method, and the safety of the fire blanket in use is improved.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
FIG. 1 is a schematic view of a fire protection testing device in a testing system for fire blankets for electric vehicles according to one embodiment;
FIG. 2 is a schematic diagram of a thermal insulation testing device in a testing system for fire blankets for electric vehicles in one embodiment;
FIG. 3 is a schematic structural view of an antiknock test device in a test system for fire blanket for electric vehicles according to one embodiment;
fig. 4 is a schematic structural diagram of a smoke control testing device in a testing system of a fire blanket applied to an electric automobile in one embodiment.
In the drawings, each reference numeral is:
1. a fire blanket to be detected; 2. a clamping device; 201. a support frame; 202. a photo frame fixture; 203. a bolt; 3. a fire protection testing device; 301. a burner; 302. a main pipeline; 303. a first branch pipe; 331. a first flowmeter; 332. a first pressure gauge; 333. a first valve; 304. a second branch pipe; 341. a second flowmeter; 342. a second pressure gauge; 343. a second valve; 305. liquefied petroleum gas tank; 306. an air compressor; 307. a combustion table; 308. a lifting table; 4. a thermal insulation testing device; 401. a heater; 402. temperature sensors a, 403, temperature sensors b, 404, temperature sensor c; 405. a multi-path temperature recorder; 5. an antiknock testing device; 501. a steel ball transmitting device; 502. a protective wall; 6. a smoke control testing device; 601. a gas cylinder; 602. a third valve; 603. a third pressure gauge; 604. a third flowmeter; 605. an experiment cabin; 606. an air pump; 607. a gas analyzer; 7. a data acquisition device; 8. and a control device.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 4, the present embodiment provides a test system for a fire blanket applied to an electric automobile, including: a clamping device 2, a fireproof testing device 3, a heat insulation testing device 4, an antiknock testing device 5, a smoke control testing device 6 and a control device 8, wherein,
the clamping device 2 is used for clamping the fire blanket 1 to be detected;
the fire protection testing device 3 comprises a burner 301, a liquefied petroleum gas tank 305 and an air compressor 306, wherein the fire blanket 1 to be tested is horizontally arranged above the burner 301 through a clamping device 2, the burner 301 is respectively connected with a first branch pipe 303 and a second branch pipe 304 through a main pipeline 302, the first branch pipe 303 is sequentially connected with a first flowmeter 331, a first pressure gauge 332, a first valve 333 and the air compressor 306, and the second branch pipe 304 is sequentially connected with a second flowmeter 341, a second pressure gauge 342, a second valve 343 and the liquefied petroleum gas tank 305;
the heat insulation testing device 4 comprises a heater 401, 3 temperature sensors (a temperature sensor a402, a temperature sensor b403 and a temperature sensor c 404) and a plurality of temperature recorders 405 connected with the 3 temperature sensors, wherein the heater 401 adopts a cone calorimeter to radiate the heater 401, the fire blanket 1 to be detected is horizontally arranged at the position 20cm below the heater 401 through a clamping device 2, and the temperature sensor a402 is fixed on the upper surface of the fire blanket 1 to be detected and is used for detecting the temperature of the upper surface of the fire blanket 1 to be detected; the temperature sensor b403 is fixed on the lower surface of the fire blanket 1 to be detected, and is used for detecting the temperature of the lower surface of the fire blanket 1 to be detected; the temperature sensor c404 is fixed at a position 20cm below the fire blanket 1 to be detected and is used for detecting the temperature at a position 20cm below the fire blanket 1 to be detected;
the antiknock testing device 5 comprises a steel ball emitting device 501 and a protective wall 502, wherein the fire blanket 1 to be detected is vertically arranged between the steel ball emitting device 501 and the protective wall 502 through a clamping device 2, and the distance between the steel ball emitting device 501 and the clamping device 2 is 1 meter;
the smoke control testing device 6 comprises a gas cylinder 601, a third valve 602, a third pressure gauge 603, a third flowmeter 604, an experiment cabin 605, a gas pump 606 and a gas analyzer 607 which are sequentially connected through pipelines, wherein the fire blanket 1 to be detected is detachably fixed in the experiment cabin 605 and divides the experiment cabin 605 into two independent spaces;
the data acquisition device 7 adopts a high-speed camera and is used for shooting the burning phenomena of the fire blanket 1 to be detected under different time nodes, wherein the burning phenomena are fire, burning through and melting; and the device is used for shooting an image of the steel balls emitted by the steel ball emitting device 501 after acting on the fire blanket 1 to be detected;
the control device 8 is in communication connection with the first flowmeter 331, the first pressure gauge 332, the first valve 333, the air compressor 306, the second flowmeter 341, the second pressure gauge 342, the second valve 343, the multi-path temperature recorder 405, the third valve 602, the third pressure gauge 603, the third flowmeter 604, the data acquisition device 7 and the gas analyzer 607.
In this embodiment, the steel ball launching device 501 is a slingshot, and when the slingshot is adopted, the quality or launching speed of the steel balls can be gradually improved along with the time by manually launching the steel balls, the launching speed is increased between 65m/s and 80m/s, and the quality of the steel balls is increased between 40g and 50g. But not limited to this, can also select the steel ball to launch the rifle according to actual demand and launch the steel ball automatically, at this moment, the steel ball quality is unanimous with the speed of launching, and the steel ball quality is 45g, launches the speed and is 70m/s.
In this embodiment, the experiment cabin 605 includes a housing that is surrounded by toughened glass and has a length and a width of 50cm, and a hollow-out clip, and the fire blanket 1 to be detected can be clamped between the square clip and the housing and is divided into two independent spaces, but the structure of the experiment cabin 605 is not limited to this, and other structures can be selected according to actual requirements.
In the testing system of the fire blanket applied to the electric automobile of an embodiment, the clamping device 2 comprises a supporting frame 201 and a photo frame clamp 202 connected with the supporting frame 201, wherein the photo frame clamp 202 is connected with the supporting frame 201 through bolts 203, when a fire protection test and a heat insulation test are required, the bolts 203 are unscrewed, the photo frame clamp 202 is in a horizontal state, and then the bolts 203 are screwed, so that the photo frame clamp 202 and the supporting frame 201 are kept fixed; when an antiknock test is required, the bolts 203 are loosened, and the bolts 203 are tightened after the photo frame fixture 202 is in a vertical state. The bottom of support frame 201 can also set up the balancing weight according to the demand, increases stability.
In the test system of the fire blanket applied to the electric automobile of an embodiment, further comprise a combustion table 307 and a lifting table 308, wherein the burner 301 is fixedly arranged on the combustion table 307, and an automatic lifting table 308 is arranged below the combustion table 307.
The test method of the fire blanket applied to the electric automobile comprises the following steps:
and (3) fireproof performance detection: opening an air compressor 306, a first valve 333 and a second valve 343, mixing air with liquefied petroleum gas in a liquefied petroleum gas tank 305 in a main pipeline 302 according to a preset proportion, opening a burner 301, horizontally arranging a fire blanket 1 to be detected above the burner 301 when the flame temperature of the burner 301 reaches 1200 ℃, collecting combustion phenomenon images of the fire blanket 1 to be detected at 10min, 30min and 60min, and sending the combustion phenomenon images to a control device 8, wherein the combustion phenomenon is fire, burning through and melting, the fire resistance of the fire blanket 1 to be detected is determined according to the combustion phenomenon images of different time nodes, specifically, when melting and fire appear in the combustion phenomenon images collected at 10min, the output is disqualified, the detection is stopped, and an alarm is sent; when melting, firing and burning-through occur in the combustion phenomenon image acquired in 30min, the output is unqualified, the detection is stopped, and an alarm is sent; when no melting, fire or burning-through occurs in the combustion phenomenon image acquired in 60min, outputting qualified fireproof performance, wherein the combustion phenomenon image can be observed through manual identification or AI identification;
and (3) detecting heat insulation performance: the heater 401 above the horizontally arranged fire blanket 1 to be detected is turned on, the fire blanket 1 to be detected is roasted for 60min, temperature information of the upper surface, the lower surface and the position 20cm below the fire blanket 1 to be detected in 60min is acquired and sent to the control device 8, the control device 8 calculates temperature differences between the upper surface and the lower surface and between the upper surface and the position 20cm below the lower surface according to the acquired temperature information, and if the temperature of the lower surface is not more than 200 ℃ and the temperature of the position 20cm below the lower surface is not more than 70 ℃, the output heat insulation performance is qualified, otherwise, the output is unqualified and an alarm is sent;
and (3) antiknock performance detection: starting a steel ball emission device 501 to continuously emit steel balls to a fire blanket 1 to be detected, which is vertically arranged, wherein the emission speed of the steel ball emission device 501 is 65-80 m/s, the mass of the steel balls is 40-50 g, collecting images of the steel balls after each impact of the fire blanket 1 to be detected and sending the images to a control device 8, judging whether the fire blanket is good in the images, if the fire blanket is good in the images, outputting the anti-explosion performance of the fire blanket 1 to be detected according with the standard if the fire blanket is good in the continuous detection for 30 times, otherwise, outputting unqualified and giving an alarm;
and (3) detecting smoke control performance: the fire blanket 1 to be detected is detachably fixed in the experiment cabin 605, the experiment cabin 605 is divided into two independent spaces, a third valve 602 is opened, carbon monoxide gas in a gas cylinder 601 is injected into one space in the experiment cabin 605, an air pump 606 is opened, gas in the other space in the experiment cabin 605 is pumped into a gas analyzer 607, the third valve 602 is closed after 3min, the gas analyzer 607 sends the detected concentration of the second carbon monoxide gas to a control device 8, and if the value of the concentration of the second carbon monoxide gas is not more than 0.1%, the smoke control performance is qualified; otherwise, the output is unqualified and an alarm is sent out.
In one embodiment, before placing the fire blanket 1 to be tested in the test chamber 605, the method further comprises the steps of: opening a third valve 602, injecting carbon monoxide gas in a gas cylinder 601 into a sealed experiment cabin 605, opening a gas pump 606, pumping the gas in the experiment cabin 605 into a gas analyzer 607, closing the third valve 602 after 3min, and sending the detected first carbon monoxide gas concentration to a control device 8 by the gas analyzer 607; the gas analyzer 607 draws in fresh air until the indication stabilizes to an initial state. The carbon monoxide gas concentration of the front and the back can be obtained, and the smoke control performance is judged according to the difference value of the carbon monoxide gas concentration of the front and the back, and the larger the difference value is, the better the smoke control performance is.
In one embodiment, the method for testing a fire blanket for an electric vehicle further comprises the steps of,
the burner 301 is placed on the burner table 307 and the height of the burner 301 is adjusted by means of the automatic lifting table 308 based on the level of the fire blanket 1 to be detected.
The above description is merely of the preferred embodiments of the fire blanket testing system and method for electric vehicles disclosed in the present invention, and is not intended to limit the scope of the examples of the present invention. Any modification, equivalent replacement, improvement, or the like made within the spirit and principles of the embodiments of the present specification should be included in the protection scope of the embodiments of the present specification.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
Claims (10)
1. Be applied to electric automobile's fire blanket's test system, characterized by, include: the device comprises a clamping device, a fireproof testing device, a heat insulation testing device, an antiknock testing device, a smoke control testing device, a data acquisition device and a control device,
the clamping device is used for clamping the fire blanket to be detected;
the fire prevention testing device comprises a burner, a liquefied petroleum gas tank and an air compressor, wherein the fire blanket to be detected is horizontally arranged above the burner through a clamping device, the burner is respectively connected with a first branch pipe and a second branch pipe through a main pipeline, the first branch pipe is sequentially connected with a first flowmeter, a first pressure gauge, a first valve and the air compressor, and the second branch pipe is sequentially connected with a second flowmeter, a second pressure gauge, a second valve and the liquefied petroleum gas tank;
the heat insulation testing device comprises a heater, 3 temperature sensors and a plurality of temperature recorders which are respectively connected with the 3 temperature sensors, wherein the fire blanket to be detected is horizontally arranged at the position 20cm below the heater through a clamping device, and the 3 temperature sensors are respectively used for detecting the temperatures of the upper surface, the lower surface and the position 20cm below the fire blanket to be detected;
the anti-explosion testing device comprises a steel ball emission device and a protective wall, and the fire blanket to be detected is vertically arranged between the steel ball emission device and the protective wall through a clamping device;
the smoke control testing device comprises a gas cylinder, a third valve, a third pressure gauge, a third flowmeter, an experiment cabin, a gas pump and a gas analyzer which are sequentially connected through pipelines, wherein the fire blanket to be detected is detachably fixed in the experiment cabin and divides the experiment cabin into two independent spaces;
the data acquisition device is used for shooting the burning phenomena of the fire blanket to be detected under different time nodes, wherein the burning phenomena are fire, burning through and melting; and the device is used for shooting an image of the steel balls emitted by the steel ball emitting device after acting on the fire blanket to be detected;
the control device is in communication connection with the first flowmeter, the first pressure gauge, the first valve, the air compressor, the second flowmeter, the second pressure gauge, the second valve, the multi-path temperature recorder, the third valve, the third pressure gauge, the third flowmeter, the data acquisition device and the gas analyzer.
2. The fire blanket test system for an electric vehicle of claim 1, wherein the clamping device comprises a support frame and a photo frame clamp connected with the support frame, and the photo frame clamp is connected with the support frame through bolts.
3. The system for testing the fire blanket applied to the electric automobile according to claim 1, further comprising a combustion table and a lifting table, wherein the burner is fixedly arranged on the combustion table, and an automatic lifting table is arranged below the combustion table.
4. The fire blanket test system for an electric vehicle of claim 1 wherein the heater is a cone calorimeter radiant heater.
5. The test system for fire blanket for electric vehicle according to claim 1, wherein the distance between the steel ball emitting device and the clamping device is 1 meter, the emitting speed of the steel ball emitting device is 65 m/s-80 m/s, and the mass of the steel ball in the steel ball emitting device is 40 g-50 g.
6. The fire blanket test system for an electric vehicle of claim 1, wherein the data acquisition device is a high speed camera.
7. A method for testing a fire blanket for an electric vehicle, wherein the method is applied to a test system for a fire blanket for an electric vehicle according to any one of claims 1 to 6, comprising the steps of:
and (3) fireproof performance detection: opening an air compressor, a first valve and a second valve to mix air with liquefied petroleum gas in a liquefied petroleum gas tank in a main pipeline according to a preset proportion; when the flame temperature of the burner reaches 1200 ℃, horizontally placing the fire blanket to be detected above the burner, collecting combustion phenomenon images of the fire blanket to be detected at 10min, 30min and 60min, and sending the combustion phenomenon images to a control device, wherein the combustion phenomena are firing, burning through and melting, and the fireproof performance of the fire blanket to be detected is determined according to the combustion phenomenon images of different time nodes;
and (3) detecting heat insulation performance: the method comprises the steps of opening a heater positioned above a horizontally arranged fire blanket to be detected, roasting the fire blanket to be detected for 60 minutes, acquiring the temperatures of the upper surface, the lower surface and the position 20cm below the fire blanket to be detected, sending temperature information to a control device, outputting qualified heat insulation performance if the temperature of the lower surface is not more than 200 ℃ and the temperature of the position 20cm below the lower surface is not more than 70 ℃, otherwise, outputting unqualified heat insulation performance and giving an alarm;
and (3) antiknock performance detection: starting a steel ball emission device to continuously emit steel balls to a fire blanket to be detected, collecting images after the steel balls strike the fire blanket to be detected each time and sending the images to a control device, judging whether the fire blanket in the images is good or not, outputting qualified antiknock performance if the fire blanket is good after continuous detection is carried out for 30 times, otherwise, outputting unqualified and giving an alarm;
and (3) detecting smoke control performance: the fire blanket to be detected is detachably fixed in the experiment cabin and is divided into two independent spaces, a third valve is opened, carbon monoxide gas in a gas cylinder is injected into one space in the experiment cabin, an air pump is opened, gas in the other space in the experiment cabin is pumped into a gas analyzer, the third valve is closed after 3min, the gas analyzer sends the detected concentration of the second carbon monoxide gas to a control device, and if the concentration value of the second carbon monoxide gas is not more than 0.1%, the output smoke control performance is qualified; otherwise, the output is unqualified and an alarm is sent out.
8. The method for testing a fire blanket for an electric vehicle according to claim 7, wherein before detachably fixing the fire blanket to be tested in the test cabin and dividing the test cabin into two independent spaces, the method further comprises the steps of:
opening a third valve to enable carbon monoxide gas in the gas cylinder to be injected into the closed experiment cabin, opening the gas pump to pump the gas in the experiment cabin into the gas analyzer, closing the third valve after 3min, and sending the detected first carbon monoxide gas concentration to the control device by the gas analyzer; the gas analyzer was allowed to draw in fresh air until the reading stabilized to the original state.
9. The method of testing a fire blanket for an electric vehicle of claim 7, further comprising the steps of:
the burner is placed on the combustion table, and the height of the burner is adjusted through the automatic lifting table based on the horizontal height of the fire blanket to be detected.
10. The method for testing fire blanket for electric automobile according to claim 7, wherein the emission speed of the steel ball emission device is 65 m/s-80 m/s, and the mass of the steel ball is 40 g-50 g.
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