CN105928973A - Experimental testing system and method for heat resistance of protection garment - Google Patents
Experimental testing system and method for heat resistance of protection garment Download PDFInfo
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- CN105928973A CN105928973A CN201610298557.7A CN201610298557A CN105928973A CN 105928973 A CN105928973 A CN 105928973A CN 201610298557 A CN201610298557 A CN 201610298557A CN 105928973 A CN105928973 A CN 105928973A
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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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Abstract
The invention provides an experimental testing system for the heat resistance of a protection garment. The protection garment is horizontally arranged on a support below a conical heater, a radiation baffle is arranged between the conical heater and the protection garment, and a heat flow density meter is arranged at the part away from the lower end of the protection garment by a certain distance. A thermocouple measuring system is used for detecting the outer surface temperature of the outermost layer of the protection garment and the inner surface temperature of the innermost comfortable layer, the heat flow density meter is used for detecting the heat flow density of the innermost comfortable layer, and a data collecting system receives data detected by the thermocouple measuring system and the heat flow density meter and outputs protection garment heat resistance data. The invention further discloses an experimental method of the system. According to the experimental testing system and the experimental method, a method suitable for acquiring the heat resistance of the protection garment in a heat radiation environment is established to measure the heat resistance of the protection garment in the high-temperature heat radiation environment; meanwhile, the experimental testing system and the experimental method can be used for studying the influences of the heat radiation intensity and the air layer size and position inside the protection garment.
Description
Technical field
The invention belongs to fire science and technical field, the experiment test system of a kind of protective garment thermal resistance
And method.
Background technology
Fire brigade is the main force of fire prevention and fire fighting and rescue.Fireman's life security is constituted by fire hazard thermal radiation
Serious threat.Heat-protective clothing is one of main guarantee of fireman's life security under fire hazard environment.Accurate evaluation
The thermal protective performance of heat-protective clothing, ensures that under fire hazard environment, fireman is from the invasion and attack of high temperature heat radiation, is fire
The research direction that calamity jury rig field is important.
Clothing thermal resistance (thermal insulation) characterizes the clothing obstruction ability to heat transfer, is that thermal comfort is commented
Physical parameter important in valency and the thermally safe evaluation of extreme temperature.Clothing thermal resistance and dampness can pass through small size
Perspiration flat plate heat and full-scale perspiration thermal manikin (Thermal manikin) measure obtain, experiments of measuring
Condition and step have detailed regulation and description at standard ASTM F1868 and ISO 9920 respectively.
But in high temperature heat radiation environment, outside heat passes through heat-protective clothing, arrives skin layer.And general room
Under interior environment, heat distributes from skin layer, is outwards transmitted by the thermal insulation layer of protective garment.High temperature and heat under room temperature
The difference of amount transmittance process, heat is different through the order of protective garment difference tissue layer, will be to protective garment thermal resistance
Measurement with dampness produces impact, and then affects the accuracy of high-temperature hot hazard assessment.Additionally, existing about
Under high temperature heat radiation environment, the research of the heat-moisture transfer process of protective garment does not has quantitative analysis inner water content
With the heat radiation thermal resistance measurement affecting protective garment on heat-moisture transfer.
Currently available technology does not the most provide the technology of a kind of effective measurement protective garment thermal resistance.
Summary of the invention
For solving above-mentioned technical problem, the invention provides the experiment test system of a kind of protective garment thermal resistance, its
Including taper heater, radiation baffle, thermocouple measurement system, heat current densimeter and data collecting system,
Described protective garment is placed horizontally on the support of described taper heater distance below, and described taper adds
Hot device is that described protective garment provides heat radiation, described radiation baffle be located at described taper heater and protective garment it
Between, for being spaced the heat radiation between described taper heater and described protective garment；The outermost of described protective garment
Upward, down, described heat current densimeter is located at described protective garment lower end certain distance in the inner side of protective garment in side
Place；
Described thermocouple measurement system for detect described protective garment outermost outer layer hull-skin temperature with
The comfort liner internal surface temperature of inner side, described heat current densimeter is for the hot-fluid of the detection comfort liner of inner side
Density, the data that described data collecting system receives described thermocouple measurement system, heat current densimeter detects are also
Output guard takes thermal resistance data.
It is preferred that described thermocouple measurement system includes three symmetrical K-type thermocouples.
Present invention also offers the experimental test procedures of protective garment thermal resistance, comprise the following steps:
S1: described protective garment is placed horizontally on the support of described taper heater distance below,
Galvanic couple system is arranged in the hull-skin temperature of outermost outer layer and the relaxing of inner side of described protective garment sample
Suitable layer inner surface, is arranged in protective garment lower end one fixed range by heat current densimeter；
S2: taper heater is positioned over the position of setting, arranges the temperature of taper heater, taper is added
Hot device is heated to the radiant power arranged；
S3: stablize 10min after taper heater reaches the radiant power set, removes screening radiation and blocks
Plate, is exposed to 20min in heat radiation environment by protective garment sample, by outside the outer layer that thermocouple collects
Surface temperature ToutAnd the internal surface temperature T of comfort linerin, the measured value R of heat current densimeter1；Finally will radiation
Shutter is retracted, and the time of cooling stage is 10min；
S4: repeat step S3 tri-times, record each hull-skin temperature T respectivelyout, the inner surface temperature of comfort liner
Degree Tin, the measured value R of heat current densimeter1, take the T of three records respectivelyout、Tin、R1Meansigma methods；
S5: acquisition clothing entire thermal resistance:
Clothing entire thermal resistance IT(℃m2W-1) by penetrating the heat dissipation capacity of protective garment and protective garment ectonexine surface
The temperature difference calculates, and computing formula is:
Wherein ToutAnd TinIt is hull-skin temperature and the internal surface temperature of comfort liner of outer layer respectively, DEG C；
HtIt is the heat dissipation capacity penetrating protective garment, W/m2, calculated by below equation:
Ht=HF-R1-C (2-2)
Wherein HF is the radiant power of taper heater, W/m2；R1It is the measured value of heat current densimeter, W/m2；
C is the free convection of air layer, W/m between heat current densimeter and sample lower surface2。
It is preferred that arrange air layer between described outer layer and waterproof ventilative layer, repeat step S1-S5, it is thus achieved that
Clothing entire thermal resistance.
It is preferred that change the air layer thickness of described protective garment sample, repeat step S1-S5, it is thus achieved that clothing are total
Thermal resistance.
It is preferred that increase by an air layer between waterproof ventilative layer and thermal insulation layer in described protective garment sample,
Repeat step S1-S5, obtain clothing entire thermal resistance.
The method have the advantages that
Set up and be applicable to the acquisition methods of protective garment thermal resistance under heat radiation environment, measure under high temperature heat radiation environment
The thermal resistance of protective garment；The present invention can be used for studying caloradiance and protective garment inner air layer size and location
Impact.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, embodiment will be described required below
The accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only the one of the present invention
A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawing can be obtained according to these accompanying drawings.
The experiment test system schematic diagram of the protective garment thermal resistance that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The all other embodiments obtained under property work premise, broadly fall into the scope of protection of the invention.
As it is shown in figure 1, embodiments provide the experiment test system of a kind of protective garment thermal resistance, its bag
Include taper heater 1, radiation baffle 2, thermocouple measurement system 5, heat current densimeter 6 and data acquisition
System 7, described protective garment is placed horizontally on the support 4 of described taper heater 1 distance below,
Described taper heater 1 provides heat radiation for described protective garment, and described radiation baffle 2 is located at described taper and is added
Between hot device 1 and protective garment, for being spaced the heat radiation between described taper heater 1 and described protective garment；
The outermost of described protective garment upward, down, be located at described in the inner side of protective garment by described heat current densimeter 6
At a certain distance from protective garment lower end；
Described thermocouple measurement system 5 is for detecting the hull-skin temperature of the outermost outer layer of described protective garment
With the comfort liner internal surface temperature of inner side, described heat current densimeter 6 is for detecting the comfort liner of inner side
Heat flow density, described data collecting system 7 receives described thermocouple measurement system 5, heat current densimeter 6 detects
Data and output guard take thermal resistance data.
The protective garment sample that the embodiment of the present invention provides includes outer layer 8, waterproof ventilative layer 10, thermal insulation layer 12 and
Comfort liner 13 totally four layers.The material that the embodiment of the present invention each layer fabric uses is shown in Table in 1.
Table 1
Air layer thickness scope in protective garment, about 2-10mm in the embodiment of the present invention, the present embodiment uses
Air layer thickness be 0 respectively, 2mm and 5mm.The sample combination of different air layer thicknesses is shown in Table 2, numbering
Being respectively N1-N9, present invention combination to N1-N9 respectively has carried out the experiment of protective garment thermal resistance.
Table 2
The caloradiance of the described taper heater 1 that the present embodiment provides is by 3 symmetrical K-type heat
The mean temperature that galvanic couple is measured is controlled.The heat radiation that the protective garment sample surfaces that the present embodiment provides accepts
Strength range controls at 1-10kW/m2.The thermal-radiating effective area of protective garment sample reception is 5cm × 5
Cm, the moveable radiation baffle 2 that the present embodiment provides is for controlling the open-assembly time of sample, and shielding exposes
Radiant heat transfer is in test sample before.Test sample is positioned on the sample holder below taper heater
4, the height of protective garment sample to heater lower surface is 25mm, the size of test sample be 10cm ×
10cm；
This experiment test system can control thickness and the position of air layer.The air layer pad of different-thickness is put
It is placed in position 9 or position 11.Position 9 represents the position between outer layer 8 and waterproof ventilative layer 10, position
11 represent the position between waterproof ventilative layer 10 and thermal insulation layer 12.
Thermocouple measurement system 5 and heat current densimeter 6 are for measuring the surface temperature of each layer fabric and measuring skin
Heat flow density received by skin position.The heat current densimeter 6 that the present embodiment provides takes sample to protecting
Inner surface distance be 6.4mm.Data collecting system 7 is by gathering the measurement based on thermocouple and radiation density
Data.
Embodiments providing the experimental test procedures of a kind of protective garment thermal resistance, it comprises the following steps:
S1: described protective garment is placed horizontally on the support of described taper heater distance below,
Galvanic couple system is arranged in the hull-skin temperature of outermost outer layer and the relaxing of inner side of described protective garment sample
Suitable layer inner surface, described protective garment sample include the most successively outer layer, waterproof ventilative layer, thermal insulation layer and
Comfort liner, is arranged in protective garment lower end one fixed range by heat current densimeter；
S2: taper heater is positioned over the position of setting, arranges the temperature of taper heater, taper is added
Hot device is heated to the radiant power arranged；
S3: stablize 10min after taper heater reaches the radiant power set, removes screening radiation and blocks
Plate, is exposed to 20min in heat radiation environment by protective garment sample, by outside the outer layer that thermocouple collects
Surface temperature ToutAnd the internal surface temperature T of comfort linerin, the measured value R of heat current densimeter1；Finally will radiation
Shutter is retracted, and the time of cooling stage is 10min；
S4: repeat step S3 tri-times, record each hull-skin temperature T respectivelyout, the inner surface temperature of comfort liner
Degree Tin, the measured value R of heat current densimeter1, take the T of three records respectivelyout、Tin、R1Meansigma methods；
S5: acquisition clothing entire thermal resistance:
Clothing entire thermal resistance IT(℃m2W-1) by penetrating the heat dissipation capacity of protective garment and protective garment ectonexine surface
The temperature difference calculates, and computing formula is:
Wherein ToutAnd TinIt is hull-skin temperature and the internal surface temperature of comfort liner of outer layer respectively, DEG C；
HtIt is the heat dissipation capacity penetrating protective garment, W/m2, calculated by below equation:
Ht=HF-R1-C (2-2)
Wherein HF is the radiant power of taper heater, W/m2；R1It is the measured value of heat current densimeter, W/m2；
C is the free convection of air layer, W/m between heat current densimeter and sample lower surface2。
In embodiments of the present invention, when caloradiance is from 2kW/m2Increase to 10kW/m2Time, sample N1-N5
Thermal resistance respectively from 17.1,25.83,21.84,27.17 and 27.64 (× 10-3℃m2W-1) be reduced to
10.5,13.08,13.21,14.44 and 13.08 (× 10-3℃m2W-1)。
There is no the thermal resistance of sample N1 of air layer less than the sample thermal resistance (N2-N5) having an air layer.N2 and
The entire thermal resistance (thickness is 2mm) of the N3 entire thermal resistance (thickness is 5mm) again smaller than N4 and N5.Except N3
With the thermal resistance of N5 at 7kW/m2And 10kW/m2Under conditions of numerical value close.
The entire thermal resistance (position 11 air layer containing 2mm thickness) of N6 with N7 is compared, the thermal resistance ratio of N7
N6 is slightly higher.Under five kinds of different caloradiances, the entire thermal resistance of N6 and N7 is 0.31 DEG C of m respectively2W-1、0.22
℃m2W-1、0.21℃m2W-1、0.16℃m2W-1With 0.15 DEG C of m2W-1.(position 11 contains the entire thermal resistance of N8 and N9
Have the air layer of 5mm thickness) to compare, the N9 thermal resistance than N8 is high.Additionally, the entire thermal resistance of N6 and N8
(position 9 air layer containing 2mm thickness), and the entire thermal resistance of N7 and N9 (position 9 is containing 5mm
The air layer of thickness) there is obvious difference.The entire thermal resistance of N8 and N9 is respectively higher than the entire thermal resistance of N6 and N7.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.Preferred embodiment is not
There is all of details of detailed descriptionthe, be also not intended to the detailed description of the invention that this invention is only described.Obviously, root
According to the content of this specification, can make many modifications and variations.It is real that these are chosen and specifically described to this specification
Execute example, be to preferably explain the principle of the present invention and actual application, so that art technology
Personnel can be best understood by and utilize the present invention.The present invention is only by claims and four corner thereof and equivalence
The restriction of thing.
Claims (6)
1. the experiment test system of a protective garment thermal resistance, it is characterised in that include taper heater, radiation
Baffle plate, thermocouple measurement system, heat current densimeter and data collecting system, described protective garment horizontal positioned
On the support of described taper heater distance below, described taper heater is that described protective garment carries
For heat radiation, described radiation baffle is located between described taper heater and protective garment, is used for being spaced described cone
Heat radiation between shape heater and described protective garment；Upward, protective garment is for the outermost of described protective garment
Inner side down, at a certain distance from described heat current densimeter is located at described protective garment lower end；
Described thermocouple measurement system for detect described protective garment outermost outer layer hull-skin temperature with
The comfort liner internal surface temperature of inner side, described heat current densimeter is for the hot-fluid of the detection comfort liner of inner side
Density, the data that described data collecting system receives described thermocouple measurement system, heat current densimeter detects are also
Output guard takes thermal resistance data.
2. the experiment test system of protective garment thermal resistance as claimed in claim 1, it is characterised in that described heat
Galvanic couple is measured system and is included three symmetrical K-type thermocouples.
3. the experimental test procedures of protective garment thermal resistance as claimed in claim 1, described protective garment sample is from outward
Outer layer, waterproof ventilative layer, thermal insulation layer and comfort liner is included successively, it is characterised in that include following step to interior
Rapid:
S1: described protective garment is placed horizontally on the support of described taper heater distance below,
Galvanic couple system is arranged in the hull-skin temperature of outermost outer layer and the relaxing of inner side of described protective garment sample
Suitable layer inner surface, is arranged in protective garment lower end one fixed range by heat current densimeter；
S2: taper heater is positioned over the position of setting, arranges the temperature of taper heater, taper is added
Hot device is heated to the radiant power arranged；
S3: stablize 10min after taper heater reaches the radiant power set, removes screening radiation and blocks
Plate, is exposed to 20min in heat radiation environment by protective garment sample, by outside the outer layer that thermocouple collects
Surface temperature ToutAnd the internal surface temperature T of comfort linerin, the measured value R of heat current densimeter1；Finally will radiation
Shutter is retracted, and the time of cooling stage is 10min；
S4: repeat step S3 tri-times, record each hull-skin temperature T respectivelyout, the inner surface temperature of comfort liner
Degree Tin, the measured value R of heat current densimeter1, take the T of three records respectivelyout、Tin、R1Meansigma methods；
S5: acquisition clothing entire thermal resistance:
Clothing entire thermal resistance IT(℃m2W-1) by penetrating the heat dissipation capacity of protective garment and protective garment ectonexine surface
The temperature difference calculates, and computing formula is:
Wherein ToutAnd TinIt is hull-skin temperature and the internal surface temperature of comfort liner of outer layer respectively, DEG C；
HtIt is the heat dissipation capacity penetrating protective garment, W/m2, calculated by below equation:
Ht=HF-R1-C (2-2)
Wherein HF is the radiant power of taper heater, W/m2；R1It is the measured value of heat current densimeter, W/m2；
C is the free convection of air layer, W/m between heat current densimeter and sample lower surface2。
4. the experimental test procedures of protective garment thermal resistance as claimed in claim 3, it is characterised in that described
Air layer is set between outer layer and waterproof ventilative layer, repeats step S1-S5, it is thus achieved that clothing entire thermal resistance.
5. the experimental test procedures of protective garment thermal resistance as claimed in claim 4, it is characterised in that change institute
State the air layer thickness of protective garment sample, repeat step S1-S5, it is thus achieved that clothing entire thermal resistance.
6. the experimental test procedures of protective garment thermal resistance as claimed in claim 5, it is characterised in that described
Increase by an air layer between waterproof ventilative layer and thermal insulation layer in protective garment sample, repeat step S1-S5, it is thus achieved that
Clothing entire thermal resistance.
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| CN108120740A (en) * | 2017-12-04 | 2018-06-05 | 清华大学合肥公共安全研究院 | A kind of system and method for testing thermal resistance |
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| CN110057335A (en) * | 2019-04-03 | 2019-07-26 | 东华大学 | A method of air layer thickness under measurement clothes clothing |
| CN110307958A (en) * | 2019-07-04 | 2019-10-08 | 北京航空航天大学 | A kind of measuring device of high-temperature plasma wind-tunnel stationary point transient heat flow |
| CN114813823A (en) * | 2022-03-14 | 2022-07-29 | 天津工业大学 | System and method for testing thermal resistance of underwater life jacket |
| CN115792119A (en) * | 2022-12-02 | 2023-03-14 | 国网福建省电力有限公司 | Protective garment performance detection method |
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| CN110057335A (en) * | 2019-04-03 | 2019-07-26 | 东华大学 | A method of air layer thickness under measurement clothes clothing |
| CN110057335B (en) * | 2019-04-03 | 2020-10-23 | 东华大学 | Method for measuring thickness of air layer under clothing |
| CN110307958A (en) * | 2019-07-04 | 2019-10-08 | 北京航空航天大学 | A kind of measuring device of high-temperature plasma wind-tunnel stationary point transient heat flow |
| CN114813823A (en) * | 2022-03-14 | 2022-07-29 | 天津工业大学 | System and method for testing thermal resistance of underwater life jacket |
| CN115792119A (en) * | 2022-12-02 | 2023-03-14 | 国网福建省电力有限公司 | Protective garment performance detection method |
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| CN105928973B (en) | 2019-10-25 |
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