CN107300572A - A kind of critical thermal radiation flux test system of pavement and method - Google Patents
A kind of critical thermal radiation flux test system of pavement and method Download PDFInfo
- Publication number
- CN107300572A CN107300572A CN201710517002.1A CN201710517002A CN107300572A CN 107300572 A CN107300572 A CN 107300572A CN 201710517002 A CN201710517002 A CN 201710517002A CN 107300572 A CN107300572 A CN 107300572A
- Authority
- CN
- China
- Prior art keywords
- radiation flux
- detection case
- thermal radiation
- test specimen
- pavement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01N25/22—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 on combustion or catalytic oxidation, e.g. of components of gas mixtures
Abstract
The present invention provides a kind of critical thermal radiation flux test system of pavement and method, the critical thermal radiation flux test system of pavement includes detection case, sliding platform, gas control module and processing module, the gas control module is fixedly connected with the detection case, the sliding platform is flexibly connected with the detection case, and the processing module is connected with the detection case, the gas control module data；The processing module includes some optical path components, and the optical path component is separately positioned on the detection case and the gas control module；The present invention detects the shading rate of smog by the optical path component, the testing result for correcting the critical thermal radiation flux test system of pavement is calculated by formula, avoid harmful effect of the smog that the test specimen burning is produced to measurement data, it is ensured that the accuracy of the critical thermal radiation flux test system detection of pavement.
Description
Technical field
The present invention relates to material combustion performances areas, and in particular to a kind of critical thermal radiation flux test system of pavement
And method.
Background technology
With developing rapidly for social economy, how effectively many crowded places have all carried out combustible material finishing,
Reduce flammable finishing material quantity and improve finishing material fire protecting performance, be an arduousness that current fire-fighting work faces and heavy
Work.Pavement is largely used as a kind of important finishing material in all kinds of public places, correct detection floor file material
The combustibility of material is simultaneously used according to code requirement control, to effectively reducing and eliminating disaster hidden-trouble there is certain reality to anticipate
Justice.
Critical thermal radiation flux is the major parameter for investigating pavement fire risk, and it characterizes pavement sample
It is pavement class building product combustibility point in the height by the ability that spreads of being burnt under conditions of outside heat radiation
Important indicator in level system, in GB 20286-2006《Public place fire-retardant product and the requirement of component combustibility and mark》
With GB 8624-2006《Construction material and product burns grading performance》Deng being widely used in mandatory national standards.At present, it is right
GB/T11785-2005 is relied primarily in the measure of the critical thermal radiation flux of pavement《The combustibility of pavement determines spoke
Penetrate heat resource method》The specific test method of this pavement combustibility, the critical thermal radiation flux of sample that this method is measured can
To be interpreted as the minimum critical caloradiance for maintaining sample burning required in the scene of a fire.
But in the critical thermal radiation flux test system of existing pavement, aliquot can produce a large amount of in burning
Dense smoke, in the case of dense smoke influence proceeding test can make test data produce larger error, cause test result
Deviation.
In view of drawbacks described above, creator of the present invention obtains the present invention finally by prolonged research and practice.
The content of the invention
To solve the above problems, the technical solution adopted by the present invention is to lead to there is provided a kind of critical heat radiation of pavement
Test system is measured, the critical thermal radiation flux test system of pavement includes detection case, sliding platform, gas control module and place
Module is managed, the gas control module is fixedly connected with the detection case, and the sliding platform is flexibly connected with the detection case, described
Processing module is connected with the detection case, the gas control module data；The processing module includes some optical path components, the light
Road component is separately positioned on the detection case and the gas control module.
Preferably, the gas control module includes fume extraction unit and air supply unit, the fume extraction unit, the air supply unit point
It is not fixedly connected with the detection case, the fume extraction unit and the air supply unit are used to control gas stream in the detection case
Speed.
Preferably, the fume extraction unit includes conduction pipe, the air supply unit includes admission line, the conduction pipe
It is arranged on the admission line on the detection case inner surface, the conduction pipe is used to collect the smog that burning is produced, institute
Stating admission line is used for transmit air into the detection case.
Preferably, the critical thermal radiation flux test system of pavement also includes the first attachment means and the second connection
Device, the sliding platform is tightly connected by first attachment means and the detection case, and the sliding platform passes through institute
The second attachment means are stated to be flexibly connected with the detection case.
Preferably, the detection case includes casing, support, heat-flow meter component, radiant panel, burner, radiant-energy thermometer, institute
State support to be fixedly connected with the casing, the heat-flow meter component is arranged on the bottom half, the radiant panel and the combustion
Burner is arranged in the casing, and the radiant-energy thermometer is set on the bracket.
The present invention also provides a kind of method of testing using the critical thermal radiation flux test system of the pavement, including
Step：
S1, is calibrated to the relevant device in the critical thermal radiation flux test system of the pavement, draws radiation
Flux detector；
S2, is placed on the detection interior by test specimen, lights the test specimen, observe and record the test specimen under heat radiation
Combustion case, optical path component record smog shading rate data are simultaneously uploaded in the processing module；
S3, measures the flame travel of the test specimen and is uploaded in the processing module, pass through the processing module
Detection data are handled, real flame propagation distance is calculated.
Preferably, the step S1 is specifically, analog sample is fixed on the sliding platform, and described slide is put down
Platform is moved in the casing, it is ensured that the sealing of the casing and the sliding platform；Adjust the fume extraction unit and described
Air supply unit, makes gas flow rate in the detection case stable, and the radiant panel heating is up to temperature stabilization in the detection case；Adjust
The whole radiant panel and the radiation flux data that measurement point is measured by the heat-flow meter component, the radiation flux data is painted
Radiation flux curve is made；Smog shading rate data are detected by the optical path component, and the data are uploaded to the place
Manage in module.
Preferably, the step S2 is specifically, the test specimen is fixed on the sliding platform, and described slide is put down
Platform is moved to the detection interior, lights the radiant panel, makes temperature stabilization in the detection case, is lighted by the burner
The test specimen；In the test specimen combustion process, it is ensured that the detection indoor air flows are stable；The optical path component records cigarette
Mist shading rate data simultaneously upload the data in the processing module.
Preferably, measure the flame travel of the test specimen and be uploaded in the processing module, the processing module
By the processing to data, the real flame propagation distance L ' is calculated, compares described by the real flame propagation distance
Radiation flux curve draws the critical thermal radiation flux of the test specimen.
Preferably, the calculation formula of the real flame propagation distance L ' is
Wherein L is the flame travel of measurement actual to the test specimen, and N is to be arranged on the light path on the detection case
The quantity of component, Ci' be arranged on i-th optical path component on the detection case and detected in the test specimen combustion process
Smog shading rate average value, CiTo be arranged on the cigarette that i-th optical path component is detected in a calibration process on the detection case
Mist shading rate average value, C is that the optical path component being arranged in the gas control module is detected in the test specimen combustion process
Smog shading rate average value.
Compared with the prior art the beneficial effects of the present invention are：1, the pressure inductor is handled by the processor
Detect that the pressure change data and the anemobiagraph of the air chamber detect the gas flow rate data of the smoke discharging pipe, and by adjusting
Save described in the exhaust fan and the compressor control gas flow rate in casing, it is ensured that the casing homeostasis；2, it is described
Conduction pipe and the admission line are arranged on the both sides of the casing, it is to avoid produced in the conduction pipe and the admission line
The burning of test specimen described in raw airflow influence, it is to avoid air-flow passes through the conduction pipe and described to detecting the influence of data
The smog that test specimen burning is produced quickly is discharged sensing chamber by admission line, reduces influence of the smog to testing result；3, lead to
The shading rate that the optical path component detects smog is crossed, is calculated by formula and corrects the critical thermal radiation flux test of the pavement
The testing result of system, it is to avoid harmful effect of the smog that the test specimen burning is produced to measurement data, it is ensured that the floor file material
Expect the accuracy of critical thermal radiation flux test system detection.
Brief description of the drawings
Fig. 1 is the structural representation (facing) of the critical thermal radiation flux test system of pavement of the present invention；
Fig. 2 is the structural representation (side view) of the critical thermal radiation flux test system of pavement of the present invention.
Numeral is represented in figure：
1- detection cases；2- sliding platforms；3- gas control modules；11- casings；12- supports；13- heat-flow meter components；14- is radiated
Plate；15- burners；16- radiant-energy thermometers；31- fume extraction units；32- air supply units；131- lowering or hoisting gears；132- heat-flow meters；
133- control-rods；311- conduction pipes；312 smoke discharging pipes；321- compressors；322- air chambers；323- admission lines；41- light paths
Component；42- processors.
Embodiment
Below in conjunction with accompanying drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment one
Refer to shown in Fig. 1 and Fig. 2, it is the structural representation of the critical thermal radiation flux test system of pavement of the present invention
Figure.
As shown in Figure 1 and Figure 2, the critical thermal radiation flux test system of the pavement includes detection case 1, sliding platform 2
With gas control module 3, the gas control module 3 is fixedly connected with the detection case 1, and the gas control module 3 is used to control the detection
Case 1 and the air circulation of external environment condition；The sliding platform 2 is flexibly connected with the detection case 1, and the sliding platform 2 can be certainly
By passing in and out the detection case 1, the sliding platform 2 is used to fix test specimen；The detection case 1 is fixed on the ground.
The detection case 1 includes casing 11 and support 12, and the casing 11 is fixed on the ground by the support 12.Institute
State casing 11 and thermal source component, heat-flow meter component 13 are set, the thermal source component is arranged on inside the casing 11, the heat-flow meter
Component 13 is arranged on the bottom of casing 11, and the heat-flow meter component 13 is used to carry out flux values detection to measurement point.
The thermal source component includes radiant panel 14, burner 15, the first adjusting means and the second adjusting means, the radiation
Plate 14 is flexibly connected by first adjusting means and the detection case 1, and the burner 15 is filled by the described second regulation
Put and be flexibly connected with the detection case 1, the radiant panel 14 adjusts angle of inclination, the burning by first adjusting means
Device 15 adjusts the horizontal range with the sliding platform 2 by second adjusting means, and the radiant panel 14 is used for fixation
The test specimen on the sliding platform 2 applies heat radiation, and the burner 15 is used to light the test specimen.
First adjusting means includes rotating junction, activity adjustment portion, and the bottom of radiant panel 14 passes through described turn
Rotation connection is fixedly connected with the detection case 1, and the radiant panel 14 can be rotated around the rotating junction, the radiant panel 14
It is connected by the activity adjustment portion with the detection case 1, makes the radiant panel 14 around institute by adjusting the activity adjustment portion
Rotating junction is stated to rotate to adjust the angle of inclination of the radiant panel 14.The activity adjustment portion preferably include cylinder or
Rope reel device one kind therein, by adjust the cylinder length of telescopic bar or the rope reel device rope it is long
The angle of inclination of the degree control radiant panel 14.
Second adjusting means includes push rod and position sensor, and the burner 15 passes through the push rod and the inspection
Measuring tank 1 is connected, and the push rod adjusts the position of the burner 15 in the horizontal direction, and the position sensor is used to control institute
State push rod the burner 15 is carried out it is spacing.
The detection case 1 also includes radiant heat source fire defector part, radiant heat source ignition electrode, burner flame test section
Part and burner ignition pin, the radiant heat source fire defector part, the radiant heat source ignition electrode are matched somebody with somebody with the radiant panel 14
Close, the burner flame detection part, the burner ignition pin coordinate with the burner 15.
The heat-flow meter component 13 includes lowering or hoisting gear 131, heat-flow meter 132, control-rod 133, and the heat-flow meter 132 is fixed
On the control-rod 133, the control-rod 133 is fixedly connected with the lowering or hoisting gear 131, and the control-rod 133 controls institute
The shift position of heat-flow meter 132 in the horizontal direction is stated, the lowering or hoisting gear 131 is used to control the heat-flow meter 132 in vertical side
Upward movement, fills 131 collective effects put by the control-rod 133 and the lifting, can position the heat-flow meter 132
The detection of flux values is carried out in multiple positions of the downside of sliding platform 2.
The detection case 1 also includes radiant-energy thermometer 16, and the radiant-energy thermometer 16 is set on the bracket, the spoke
Penetrate the temperature that pyrometer 16 is used to detect the radiant panel 14 in test process.
The sliding platform 2 includes test platform and fixture, and it is flat that the test specimen is fixed on the test by the fixture
On platform, when the sliding platform 2 is moved in the detection case 1, the radiant panel 14 can be to the institute on the test platform
State test specimen and carry out heat radiation effect.
The gas control module 3 includes fume extraction unit 31 and air supply unit 32, and the fume extraction unit 31 includes conduction pipe
311st, smoke discharging pipe 312, the air supply unit 32 includes compressor 321, air chamber 322 and admission line 323.The smoke discharging pipe
Exhaust fan is set in 312, and the conduction pipe 311 and the road of the air inlet pipe 323 are arranged in the casing 11, the mozzle
Road 311 is tightly connected with the smoke discharging pipe 321；The admission line 323 is connected with the air chamber 322, and the air chamber 322 is set
Put in the bottom of casing 11, the bottom of casing 11 sets stomata, the air chamber 322 passes through the stomata and the air inlet pipe
Road 323 is connected, and the air chamber 322 with the compressor 321 by being connected, and the inside of air chamber 322 sets pressure inductor, leads to
Cross the pressure inductor and detect pressure change in the air chamber 322.
The conduction pipe 311 and the admission line 323 are arranged on the inner surface of the both sides of casing 11, and institute
State the escape pipe open height of admission line 323 and be slightly below the sliding platform surface, the air inlet pipe open height of conduction pipe 311 is omited
Less than the radiation plate surface, it is to avoid test specimen described in the airflow influence in the conduction pipe 311 and the admission line 323
Burning, reduces influence of the air-flow to detection data；And by the setting of the conduction pipe 311 and the admission line 323, it is real
Smog produced by now the test specimen is burnt quickly discharges the sensing chamber, it is ensured that sensing chamber's inner air flow, reduces
Influence of the smog to detection data.
The critical thermal radiation flux test system of pavement also includes processing module 4, and the processing module 4 includes light
Road component 41, thermocouple, anemobiagraph, processor 42, the optical path component 41 detect smog shading rate, and the thermocouple is used to examine
Temperature in the casing 11 is surveyed, the anemobiagraph measures gas flow rate in the smoke discharging pipe 312, and the processor 42 is used to remember
The data of each device of record processing simultaneously assign each device of instruction control by the result of processing.The processor 42 and the light path group
Part 51, the thermocouple, the pressure inductor, the radiant-energy thermometer 16, the heat-flow meter component 13, first regulation
Device, the second adjusting means data cube computation；The processor 42 handles the pressure inductor and detects the air chamber 322
Pressure change data and the anemobiagraph detect the gas flow rate data of the smoke discharging pipe 312, and by adjusting the exhaust
Gas flow rate in casing 11 described in fan and the compressor control, it is ensured that the homeostasis of casing 11.
Embodiment two
Embodiment two is further improved on the basis of embodiment one, and specific part is that the pavement faces
Boundary's thermal radiation flux test system also includes the first attachment means and the second attachment means, and first attachment means include first
Tooth buckle and the second tooth buckle, the first tooth buckle are arranged on the sliding platform, and the second tooth buckle is arranged on institute
State on casing, the first tooth buckle and the second tooth buckle are correspondingly arranged.
Second attachment means include guide rail and sliding block, and the sliding block is fixed on the guide rail on the sliding platform and consolidated
The bottom half is scheduled on, is acted on by the flexible connection of the sliding block and the guide rail, realizes that the sliding platform freely enters
Go out the casing.
The first tooth buckle includes the first tooth engaged and the first sealing, and the second tooth buckle includes the second tooth engaged
With the second sealing, when the sliding platform is integrally connected with the casing, first tooth engaged and second occlusion
Tooth is engaged to form bite, and first sealing and second sealing inside and outside the casing, are realized respectively
The effect of the casing inner air and outer air circulation is obstructed, passes through the connection of first tooth engaged and second tooth engaged, it is ensured that
The test specimen being fixed on the sliding platform is relative with the burner and the radiant panel that are arranged in the casing
Position is stable, it is to avoid the calibration repeatedly to the burner and the radiant panel location status, realizes that the pavement is critical
Thermal radiation flux test system detects the accuracy of data.
Embodiment three
Embodiment three is further improved on the basis of embodiment one, and specific part is, the optical path component 41
Including laser, collimater, main detector, spectroscope, reference detector, collector.The light beam of the laser transmitting is through institute
State spectroscope and be divided into two-way, be converted to reference data all the way for reference detector monitoring, cigarette is injected in another road as measuring beam
In mist, the measuring beam after the smog by the collimater by being collected and being converted to detection data, institute by main detector
State collector and collect the reference data and the detection data, and the reference data and the detection data are uploaded to institute
State processor 42, the processor 42 is by going out the shading of the smog to the reference data and the detection data processing
Rate.
One optical path component 41 is set on the smoke discharging pipe 312, by being arranged on the smoke discharging pipe 312
The detection of the optical path component 41 is calculated the smoke-producing amount of the test specimen, detects the important combustion parameter of the test specimen.Institute
State and some optical path components 41 are set on casing 11, by described in 41 pairs of the optical path component being arranged on the casing 11
The smog shading rate of each measurement point is detected in test specimen detection process, and by the post-processing of the processor 42, is excluded
The test specimen influence of produced smog to experimental result in burning, it is ensured that the critical thermal radiation flux test of pavement
The accuracy of system test result, preferably using the casing center line perpendicular to the sliding platform moving direction as axle
Line is symmetrical to be evenly arranged.
Example IV
The present invention relates to a kind of method of testing using the critical thermal radiation flux test system of the pavement, step tool
Body is
S1, is calibrated to the relevant device in the critical thermal radiation flux test system of the pavement, draws radiation
Flux detector；
S2, test specimen is placed in the sensing chamber 1, the test specimen is lighted, and is observed and is recorded the test specimen in heat radiation
Under combustion case, optical path component record smog shading rate data simultaneously upload the data in the processing module；
S3, measures the flame travel of the test specimen and is uploaded in the processing module, pass through the processing module
Detection data are handled, real flame propagation distance is calculated.
The step S1 is specifically, analog sample is fixed on the sliding platform 2, and the sliding platform 2 is moved
Move into the casing 11, it is ensured that the sealing of the casing 11 and the sliding platform 2；Adjust the fume extraction unit 31 and institute
Air supply unit 32 is stated, gas flow rate in the detection case 1 is met (2.5 ± 0.2) m/s, then lights the radiant panel 14, allow
The radiant panel 14 is heated at least 1 hour, until temperature stabilization in the detection case 1, in the process, the burner 15 should
Close.
If the analog sample is initiating terminal close to one end in the direction of burner 15, the heat-flow meter 132 is used
Position measurement radiation flux away from the initiating terminal 410mm on the analog sample, the spy of the heat-flow meter 132 in measurement
Survey surface is parallel with the analog sample face and is higher by 2mm~3mm, measurement data is read after 30s, by adjusting the radiant panel
14, the radiation flux for making the heat-flow meter 132 be measured at the 410mm is (5.1 ± 0.2) kW/m2；Other are measured successively
Point is measured, and the measurement point is preferably away from starting at the initiating terminal 110mm positions to 910mm on the analog sample
The data of measurement are depicted as radiation flux curve by the measurement point that position is terminated and spacing is uniformly arranged for 100mm.
The detection data of the optical path component 41 are recorded after measurement radiation flux terminates and are uploaded the data described
In processor 42.
Complete to draw after the radiation flux curve, the analog sample on the sliding platform 2 is taken out, it is ensured that institute
Being tightly connected for sliding platform 2 and the sensing chamber 1 is stated, the blackbody temperature and the detection room temperature of the radiant panel 14 is detected
Degree.
Step S2 is specifically, the test specimen is fixed on the sliding platform 2, and the sliding platform 2 is moved to
In the sensing chamber 1, the radiant panel 14 is lighted, allows the radiant panel 14 to heat at least 1 hour, until in the detection case 1
Temperature stabilization, adjusts the radiant panel 14, makes in the blackbody temperature and step S1 that measured value deviation is in the range of ± 5 DEG C, institute
State and detect that measured value deviation is in the range of ± 10 DEG C in room temperature and step S1.
The burner 15 is lighted, and the burner 15 is moved to the test specimen edge, the test specimen is lighted simultaneously
Keep the burner flame to contact 10min with the test specimen, then the burner 15 is removed and extinguishes the burner
15.In the test specimen combustion process, it is ensured that air flow is stable in the sensing chamber 1.Detection process terminates to be judged as, from point
The burner 15 is fired to start to detect that full 30min causes detection end or the surface of test piece flame within less than the 30min times
Stop propagating and extinguishing causes detection to terminate.The optical path component 41 records the data of each measurement point and by institute in detection process
Data are stated to upload in the processor 42.
Measure the flame travel of the test specimen and be uploaded in the processor 42, the processor 42 is by each
The processing of data, calculates the real flame propagation distance L ', and it is logical to compare the radiation by the real flame propagation distance
Amount curve draws the critical thermal radiation flux of the test specimen.
The formula of the real flame propagation distance L ' is
Wherein L is the flame travel of measurement actual to the test specimen, and N is to be arranged on the light path group on the casing
The quantity of part 41, Ci' it is to be arranged on the smog shading rate that i-th optical path component 41 is detected in step s 2 on the casing
Average value, CiIt is averaged to be arranged on the smog shading rate that i-th optical path component 41 is detected in step sl on the casing
Value, C is the smog shading rate average value that the optical path component 41 being arranged on the smoke discharging pipe is detected in step s 2.
By to the upward value after the detection data processing, removing ineligible parameter, excluding due to part
The inspection positions of optical path component 41, which are not burnt, to be caused the data detected and other data deviations excessive and causes
Influence to result of calculation, it is to avoid calculate data and produce error, when the smog shading rate average value detected in step s 2 is less than
During certain numerical value, i.e., when the smog that described test specimen burning is produced is less than finite concentration, radiant panel described in the fume absorbent is produced
Thermal radiation effect it is larger, cause the real flame propagation distance L ' to be more than the measurement flame travel L；When in step
When the smog shading rate average value detected in S2 is more than certain numerical value, i.e., the smog that described test specimen burning is produced is more than finite concentration
When, the heat radiation effect additional to test specimen generation of subsidiary substantial amounts of heat is larger in combustion for the smog, causes
The real flame propagation distance L ' is less than the measurement flame travel L.
In detection process, the test specimen burning can produce a large amount of smog, and the smog is due to subsidiary in combustion
Substantial amounts of heat produces additional heat radiation to the test specimen and acted on, and causes the surface of test piece temperature to keep higher state, makes
The flame travel of the test specimen becomes remote；The smog attaches substantial amounts of particulate matter simultaneously, and the particulate matter can absorb
The heat radiation of the radiant panel generation is simultaneously discharged by the fume extraction unit, causes heat radiation of the radiant panel to the test specimen
It the description of radiation flux curve can not be distributed as described, cause actually detected result error.
By the calculating of formula, the testing result of the critical thermal radiation flux test system of pavement is corrected, it is to avoid
Harmful effect of the smog that the test specimen burning is produced to measurement data, it is ensured that the critical thermal radiation flux test of pavement
The accuracy of system detectio.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, on the premise of the inventive method is not departed from, can also make some improvement and supplement, and these are improved and supplement also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of critical thermal radiation flux test system of pavement, it is characterised in that including detection case, sliding platform, gas control
Module and processing module, the gas control module are fixedly connected with the detection case, the sliding platform and detection case activity
Connection, the processing module is connected with the detection case, the gas control module data；The processing module includes some light path groups
Part, the optical path component is separately positioned on the detection case and the gas control module.
2. the critical thermal radiation flux test system of pavement according to claim 1, it is characterised in that the gas control mould
Block includes fume extraction unit and air supply unit, and the fume extraction unit, the air supply unit are fixedly connected with the detection case respectively, institute
Stating fume extraction unit and the air supply unit is used to control gas flow rate in the detection case.
3. the critical thermal radiation flux test system of pavement according to claim 2, it is characterised in that the smoke evacuation list
Member includes conduction pipe, and the air supply unit includes admission line, and the conduction pipe and the admission line are arranged on described
On detection case inner surface, the conduction pipe is used to collect the smog that burning is produced, and the admission line is used to be to the inspection
Transmission air in measuring tank.
4. the critical thermal radiation flux test system of pavement according to claim 1, it is characterised in that also including first
Attachment means and the second attachment means, the sliding platform are tightly connected by first attachment means and the detection case,
The sliding platform is flexibly connected by second attachment means with the detection case.
5. the critical thermal radiation flux test system of pavement according to claim 1, it is characterised in that the detection case
Including casing, support, heat-flow meter component, radiant panel, burner, radiant-energy thermometer, the support is fixedly connected with the casing,
The heat-flow meter component is arranged on the bottom half, and the radiant panel and the burner are arranged in the casing, described
Radiant-energy thermometer is set on the bracket.
6. a kind of method of testing of any one of usage right requirement 1 to the 5 critical thermal radiation flux test system of pavement,
It is characterised in that it includes step：
S1, is calibrated to the relevant device in the critical thermal radiation flux test system of the pavement, draws radiation flux
Curve；
S2, is placed on the detection interior by test specimen, lights the test specimen, observe and record combustion of the test specimen under heat radiation
Burning situation, the optical path component record smog shading rate data are simultaneously uploaded in the processing module；
S3, measures the flame travel of the test specimen and is uploaded in the processing module, by the processing module to inspection
Survey data to be handled, calculate real flame propagation distance.
7. the critical thermal radiation flux method of testing of pavement according to claim 6, it is characterised in that the step S1
Specifically, analog sample is fixed on the sliding platform, and the sliding platform is moved in the casing, it is ensured that institute
State the sealing of casing and the sliding platform；The fume extraction unit and the air supply unit are adjusted, makes gas in the detection case
Rate of flow of fluid is stable, and the radiant panel heating is up to temperature stabilization in the detection case；Adjust the radiant panel and by the heat
Flowmeter component measures the radiation flux data of measurement point, and the radiation flux data is depicted as into radiation flux curve；By institute
Optical path component detection smog shading rate data are stated, and the data are uploaded in the processing module.
8. the critical thermal radiation flux method of testing of pavement according to claim 6, it is characterised in that the step S2
Specifically, the test specimen is fixed on the sliding platform, and the sliding platform is moved to the detection interior, lighted
The radiant panel, makes temperature stabilization in the detection case, and the test specimen is lighted by the burner；It is burned in the test specimen
Cheng Zhong, it is ensured that the detection indoor air flows are stable；Optical path component record smog shading rate data and by the data
Upload in the processing module.
9. the critical thermal radiation flux method of testing of pavement according to claim 6, it is characterised in that the step S3
Specifically, measuring the flame travel of the test specimen and being uploaded in the processing module, the processing module passes through logarithm
According to processing, calculate the real flame propagation distance L ', pass through the real flame propagation distance and compare the radiation flux
Curve draws the critical thermal radiation flux of the test specimen.
10. the critical thermal radiation flux method of testing of pavement according to claim 9, it is characterised in that described true
Flame travel L ' calculation formula is
Wherein L is the flame travel of measurement actual to the test specimen, and N is to be arranged on the optical path component on the detection case
Quantity, Ci' it is to be arranged on the smog that i-th optical path component is detected in the test specimen combustion process on the detection case
Shading rate average value, CiHidden to be arranged on the smog that i-th optical path component is detected in a calibration process on the detection case
Light rate average value, C is the cigarette that the optical path component being arranged in the gas control module is detected in the test specimen combustion process
Mist shading rate average value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517002.1A CN107300572B (en) | 2017-06-29 | 2017-06-29 | System and method for testing critical thermal radiation flux of flooring material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517002.1A CN107300572B (en) | 2017-06-29 | 2017-06-29 | System and method for testing critical thermal radiation flux of flooring material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107300572A true CN107300572A (en) | 2017-10-27 |
| CN107300572B CN107300572B (en) | 2019-12-27 |
Family
ID=60135456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710517002.1A Active CN107300572B (en) | 2017-06-29 | 2017-06-29 | System and method for testing critical thermal radiation flux of flooring material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107300572B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115938A (en) * | 2018-07-19 | 2019-01-01 | 芜湖籁余新能源科技有限公司 | A kind of test device for radiant heat source method detection pavement combustibility |
| CN109613058A (en) * | 2018-12-27 | 2019-04-12 | 上海海事大学 | A kind of Thermal feedback heattransfer effect test device of steel attachment combustible material burning |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237451A (en) * | 2014-09-26 | 2014-12-24 | 上海合评消防检测中心 | Device for separating standalone burning trolley from main burner fixing bottom plate |
| CN104865289A (en) * | 2015-05-25 | 2015-08-26 | 苏州菲尼克斯质检仪器有限公司 | Flooring material heat radiation tester |
| CN205301219U (en) * | 2015-12-05 | 2016-06-08 | 天津吉源恒益科技有限公司 | Hot radiation warning assembly of pavement heat radiation tester |
-
2017
- 2017-06-29 CN CN201710517002.1A patent/CN107300572B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237451A (en) * | 2014-09-26 | 2014-12-24 | 上海合评消防检测中心 | Device for separating standalone burning trolley from main burner fixing bottom plate |
| CN104865289A (en) * | 2015-05-25 | 2015-08-26 | 苏州菲尼克斯质检仪器有限公司 | Flooring material heat radiation tester |
| CN205301219U (en) * | 2015-12-05 | 2016-06-08 | 天津吉源恒益科技有限公司 | Hot radiation warning assembly of pavement heat radiation tester |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115938A (en) * | 2018-07-19 | 2019-01-01 | 芜湖籁余新能源科技有限公司 | A kind of test device for radiant heat source method detection pavement combustibility |
| CN109613058A (en) * | 2018-12-27 | 2019-04-12 | 上海海事大学 | A kind of Thermal feedback heattransfer effect test device of steel attachment combustible material burning |
| CN109613058B (en) * | 2018-12-27 | 2021-07-13 | 上海海事大学 | Steel adheres to hot feedback heat transfer effect testing arrangement of combustible material burning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107300572B (en) | 2019-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107152695B (en) | Heating furnace visualization combustion control system and control method based on many reference amounts detection | |
| WO2021057860A1 (en) | Experimental device for researching jet fire of natural gas long-distance pipeline based on obstacle placement condition | |
| CN108982745B (en) | Coal sample combustion characteristics test device under varying strength jet flame heat radiation | |
| CN113376209A (en) | Horizontal combustion test device and method for wires and cables | |
| CN104764769A (en) | Multichannel parallel heat release rate test system and test method | |
| CN101726370A (en) | Fire simulation experiment platform for tunnel | |
| CN103292835A (en) | Comprehensive detection simulation experiment device for fire detection performance | |
| CN111261011A (en) | Mine fire simulation experiment platform and experiment method | |
| Tihay et al. | Combustion of forest litters under slope conditions: Burning rate, heat release rate, convective and radiant fractions for different loads | |
| CN107300572A (en) | A kind of critical thermal radiation flux test system of pavement and method | |
| Jang et al. | Revision of the input parameters for the prediction models of smoke detectors based on the FDS | |
| WO2021057859A1 (en) | Experimental method and system based on research of jet fire of long-distance natural gas pipeline under obstacle placement condition | |
| CN104865289A (en) | Flooring material heat radiation tester | |
| CN212410487U (en) | Fire combustion characteristic testing device for adjacent outer wall facade coupling-configuration heat-insulation board | |
| CN204556552U (en) | A kind of multi-channel parallel heat release rate testing system | |
| KR102295210B1 (en) | Forecasting Apparatus and System of Forest Fire Spreading | |
| CN206281664U (en) | A kind of multitubular bundles integrated form radiant tube combustion experimental system | |
| KR101269119B1 (en) | 10㎿ type large scale calorimeter | |
| CN206672497U (en) | Industrial production line fire simulation experimental apparatus | |
| CN206038344U (en) | Exhaust port heat extraction efficient measurement system | |
| CN205642624U (en) | Infrared thermodetector | |
| CN109632883B (en) | A kind of calorimetric method based on large-scale Calorimetry system | |
| CN114530085A (en) | Snake-shaped curve highway tunnel fire simulation test platform system | |
| CN114061996A (en) | Device for simulating longitudinal ventilation and smoke control effect of fire hazard of highway tunnel and smoke control method | |
| Jenkins et al. | Wind tunnel modeling of atmospheric emissions from agricultural burning: Influence of operating configuration on flame structure and particle emission factor for a spreading-type fire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhong Qiming Inventor after: Zhao Jingbo Inventor after: Zhu Guangwei Inventor after: Wang Zhu Inventor after: Hu Qionghui Inventor after: Wang Junnan Inventor after: Zhuang Mengping Inventor before: Zhao Jingbo Inventor before: Zhuang Mengping Inventor before: Zhong Qiming Inventor before: Wang Zhu Inventor before: Jiang Fan Inventor before: Wang Jian Inventor before: Hu Qionghui |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |