高溫熱流計法導熱儀
High Temperature Heat Flow Meter(TC-HFM-1000)
Innovative High Temperature Heat Flow Meter System for Determination of
Thermal Conductivity of Insulations
一、簡介 （INTRODUCTION）
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熱流計法高溫導熱系數(shù)測試系統(tǒng)是業(yè)內(nèi)先進的熱流計法高溫熱導率測量裝置，實現(xiàn)了1000℃以下防隔熱材料的高溫導熱系數(shù)測量，同時在測量過程中還可以精確模擬氣氛環(huán)境，全過程的獲得材料導熱系數(shù)隨溫度和真空壓力變化的性能曲線。
依陽公司出品的熱流計法高溫導熱系數(shù)測試系統(tǒng)依據(jù)ASTM C201、ASTM C518和GB 10295-2008標準測試方法，是一個標準的穩(wěn)態(tài)法導熱系數(shù)測試系統(tǒng)。當被測試樣上下的熱面和冷面在恒定溫度狀態(tài)下，在被測試樣的中心區(qū)域和熱流測量裝置的中心區(qū)域會建立起類似于無限大平板中存在的單向穩(wěn)態(tài)熱流。通過測量熱流密度、試樣的熱面和冷面溫度以及試樣厚度獲得被測試樣的等效導熱系數(shù)。 |
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High temperature Heat flow meter method conductivity test system is the industry's first heat flow meter method high temperature thermal conductivity measuring device, for the first time, the thermal conductivity measurement of the insulation under 1000 ℃ is realized, and the atmosphere environment can be simulated accurately during the measurement, and the performance curve of material thermal conductivity varies with temperature and pressure.
The thermal conductivity test system produced by EYOUNG Company is a standard steady-state thermal conductivity test system according toASTM C201、ASTM C518 andGB 10295-2008 standard test method. When the hot and cold surfaces of the tested sample are in constant temperature state, the unidirectional steady heat flow in the center area of the tested sample and the central region of the heat flow measuring device will be established. The equivalent thermal conductivity of the sample is obtained by measuring the heat flux density, the hot surface and the temperature of the specimen and the thickness of the specimen.
二、技術指標（Technical Data）
（1）被測對象（Test Materials）：剛性和柔性板狀材料（Rigid and flexible sheet insulation material）。
（2）溫度范圍（Temperature Range）：100℃～1000℃
（3）氣壓范圍（Gas Pressure Range）：10Pa~1atm
（4）導熱系數(shù)測試范圍（Thermal Conductivity Range）：<1W/mK。
（5）試樣尺寸（Sample Size）：正方形（Square）300×300mm
（6）試樣厚度范圍（Thickness）：10~70mm。
（7）溫度測量精度（Temperature Accuary）：±1%。
（8）氣壓測量精度（Pressure/Vacuum Accuary）：±1%
（9）導熱系數(shù)測量精度（Thermal Conductivity Accuary）：±5%。
三、特點（Main Feature）
1. 單試樣測量模式，減少了試驗過程中對試樣的要求，更便于試驗操作。
The single sample measuring mode reduces the requirements of the sample during the test, and is more convenient for the test operation.
2. 采用依陽公司出品的高精度氣壓控制系統(tǒng)，使得被測試樣處于精確控制的氣壓環(huán)境中，由此來模擬不同氣氛環(huán)境和不同空間高度時材料所處的狀態(tài)，更準確的對材料的導熱系數(shù)性能進行測試評價。
Based on the high precision vacuum control system produced by the Eyoung Company, the test sample is in the accurate control of the gas pressure environment, thus simulating different atmosphere environment and different space height of the material in the state, more accurate performance of the thermal conductivity of the material test evaluation.
3. 按照標準測試方法的規(guī)定，試樣冷熱面溫度必須均勻，試樣上下兩個面的溫度波動不超過±1%，目前國內(nèi)外的高溫導熱系數(shù)測試設備都無法實現(xiàn)此要求，都是采用單面整體加熱，試樣熱面無法保證均勻。試樣熱面溫度的不均勻一是會在試樣上產(chǎn)生熱應力而造成試樣變形，二是無法測量較厚板狀試樣，三是會帶來嚴重的測量誤差。依陽公司出品的導熱系數(shù)測試系統(tǒng)則采用了高溫護熱加熱方式，使得試樣熱面溫度均勻性滿足標準方法要求，由此在保證測量精度的前提下可以測量較厚的平板試樣，更能滿足工程結(jié)構件的整體測量。
According to the standard test method, the sample heat and cold surface temperature must be uniform, the sample two surface temperature fluctuation does not exceed ±1%, at present at home and abroad high temperature thermal conductivity test equipment can not achieve this requirement, are using a single side of the whole heating, the sample hot surface can not guarantee uniformity. The uneven temperature of the specimen is one of the thermal stress on the specimen, which results in the deformation of the specimen, the second is the inability to measure the thicker plate specimen, and the third is the serious measurement error. The thermal conductivity test system produced by Eyoung Company adopts high temperature heating mode, which makes the temperature uniformity of the sample hot surface meet the standard method requirement, thus the thickness of flat specimen can be measured under the precondition of guaranteeing the measurement precision, which can meet the overall measurement of engineering structural parts.
4. 熱流計法高溫導熱系數(shù)測試系統(tǒng)可以在試樣厚度方向上形成巨大的溫度梯度，最大溫度梯度可以達到900℃以上，由此來真實模擬和測量隔熱材料在實際使用條件下的材料隔熱性能。采用了不到1mm厚的薄膜熱流計來測量流經(jīng)整體試樣的熱流密度，有效保證了試樣上大的溫度梯度實現(xiàn)。由于此測試系統(tǒng)可以實現(xiàn)最大70mm厚的試樣測量，可以通過調(diào)整試樣厚度和層數(shù)進行不同溫度梯度下的熱導率測試，試驗條件和測試參數(shù)的設計更靈活，可以滿足不同測試條件的需要。
Heat flow meter method high temperature thermal conductivity test system can form a large temperature gradient in the thickness direction of the specimen, the maximum temperature gradient can reach more than 900 ℃, thus the real simulation and measurement of thermal insulation materials under the actual use of material insulation properties. A thin film heat flow meter with less than 1mm thickness is used to measure the heat flux through the whole specimen, and the large temperature gradient of the specimen is ensured. As the test system can achieve the maximum 70mm thickness of the sample measurement, can adjust the thickness of the sample and the number of layers of thermal conductivity under different temperature gradients, test conditions and test parameters of the design more flexible, can meet the needs of different test conditions.
5. 材料在高溫條件下會發(fā)生熱膨脹現(xiàn)象，特別是低密度類隔熱材料的熱膨脹系數(shù)更是很大，因此在實際測試過程中，通常所進行的室溫條件下試樣厚度測試數(shù)據(jù)并不能代表實際測試過程中的試樣厚度，而試樣厚度的準確與否對導熱系數(shù)測量精度有嚴重影響。依陽公司出品的高溫導熱系數(shù)測試系統(tǒng)配備了激光在線試樣厚度測量裝置，可以在整個測試過程中實時監(jiān)測試樣的厚度變化，保證了測量準確性。
The thermal expansion of materials in high temperature conditions, especially the low density insulation materials, the thermal expansion coefficient is very large, so in the actual test process, the normal temperature in the sample thickness test data does not represent the actual test process of the sample thickness, The accuracy of the measurement of thermal conductivity is seriously affected by the accuracy of specimen thickness. The high temperature thermal conductivity test system produced by Eyoung Company is equipped with the laser on-line specimen thickness measuring device, which can monitor the thickness change of the specimen in real time during the whole testing process, and ensure the measurement accuracy.
四、技術資料（Technological Notes）
（1）GB/T 10295-2008 絕熱材料穩(wěn)態(tài)熱阻及有關特性的測定 熱流計法
Thermal Insulation--Determination of Steady State Thermal Resistance and Related Properties--Heat Flow Meter Apparatus
（2）熱流計法高溫熱導率測試系統(tǒng)設計--均熱板的熱模擬計算分析（2015年）
Design of High Temperature Thermal Conductivity Test System Based on Heat Flow Meter Method--Thermal Simulation Calculation and Analysis of Uniform Hot Plate
（3）氣壓對材料熱導率測試影響的試驗研究（2015年）
Experimental Study on the Influence of Air Pressure on the Thermal Conductivity Test of Materials
（4）真空隔熱板（VIP）及其墻體導熱系數(shù)和熱阻測試方案設計（2015年）
Design of Thermal Conductivity and Thermal Resistance Test Scheme for Vacuum Insulation Plate (VIP) and Its Wall
（5）熱流計法測試低密度剛性隔熱瓦高溫有效導熱系數(shù)（2016年）
Effective Thermal Conductivity Measurements of Low Density Thermal Insulation Rigid Tiles Using Heat Flux Method
（6）不同真空度下石墨硬氈熱流計法高溫導熱系數(shù)測量（2016年）
Effective Thermal Conductivity Measurements of Rigid Graphite Felt In the Vacuum Using Heat Flux Method
（7）耐火隔熱材料測試中有效導熱系數(shù)與真導熱系數(shù)的相互關系研究（2018年）
Research on the Relationship Between Effective Thermal Conductivity and True Thermal Conductivity in the Test of Refractory Insulation
（8）纖維類隔熱材料有效導熱系數(shù)與真導熱系數(shù)相互關系的試驗驗證（2018年）
Experimental Verification of the Relationship Between Effective Thermal Conductivity and True Thermal Conductivity of Fiber Insulation
（9）碳纖維隔熱保溫材料在真空和惰性氣體環(huán)境下高溫導熱系數(shù)測試技術（2018年）
Test Technique for Thermal Conductivity of Carbon Fiber Insulator in High Temperature Vacuum and Inert Gas Environment
（10）印度航母鍋爐爆炸——折射出我國高溫隔熱材料性能測試中存在的嚴重問題（2019年）
India Aircraft Carrier Boiler Explosion Reflects Serious Problems in Performance Testing of High Temperature Insulation Materials in China
（11）一種測量1000℃以下隔熱材料有效熱導率的新技術（2019年）
A Novel Technique for the Measurement of the Effective Thermal Conductivity of Thermal Insulating Materials up to 1000℃
（12）提高低導熱材料表面溫度均勻性方法的研究（2013年）
Research of Improving Surface Temperature Uniformity of Low Thermal Conductance Materials
（13）新型表征參數(shù)——根據(jù)密度和導熱系數(shù)關系評價材料的隔熱性能（2019年）
New Characterization Parameter Evaluating the Thermal Insulation Performance of Materials According to the Relationship Between Density and Thermal Conductivity
（14）空間環(huán)境下纖維織物絕熱材料隔熱性能評價與仿真驗證（2019年）
Evaluation and Simulation Verification of Thermal Insulation Property of Fiber Fabric Materials in Space Environment
（15）隔熱材料等效導熱系數(shù)與導熱系數(shù)的區(qū)別以及高溫大溫差條件下的試驗驗證
Difference Between Effective Thermal Conductivity and Thermal Conductivity of Thermal Insulation Materials and Experimental Verification Under High Temperature and Large Temperature Difference Conditions
（16）氣凝膠隔熱材料超低導熱系數(shù)測試中存在的問題及解決方案
Problems and Solutions in Ultra-Low Thermal Conductivity Testing of Aerogel Thermal Insulation Materials
（17）穩(wěn)態(tài)法熱導儀超低導熱系數(shù)測試下限的評估方法和試驗驗證
Evaluation Method and Experimental Verification of the Lower Limit of the Ultra-Low Thermal Conductivity Test of the Steady-State Thermal Conductivity Meter