CN103196949A - Heat resistance heat flow meter calibration method and implementation device thereof - Google Patents
Heat resistance heat flow meter calibration method and implementation device thereof Download PDFInfo
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- CN103196949A CN103196949A CN2013101514614A CN201310151461A CN103196949A CN 103196949 A CN103196949 A CN 103196949A CN 2013101514614 A CN2013101514614 A CN 2013101514614A CN 201310151461 A CN201310151461 A CN 201310151461A CN 103196949 A CN103196949 A CN 103196949A
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Abstract
The invention discloses a heat resistance heat flow meter calibration method and an implementation device thereof. The implementation device comprises a heat insulating plate, a hot plate, a cold plate, a heat conductivity coefficient standard plate and a heat resistance heat flow meter, wherein the hot plate, the heat conductivity coefficient standard plate and the heat resistance heat flow meter are successively arranged between the heat insulating plate and the cold plate, and the two sides of the heat conductivity coefficient standard plate are respectively provided with a temperature sensor. The heat flux of the heat conductivity coefficient standard plate is obtained through measuring the thickness of the heat conductivity coefficient standard plate and the temperature difference of the two sides of the heat conductivity coefficient standard plate, according to an equal principle of the heat conductivity coefficient standard plate and the heat flux through the heat resistance heat flow meter and the output potential of the heat resistance heat flow meter, and a sensitivity ratio of the heat resistance heat flow meter is obtained. The heat resistance heat flow meter calibration method and the implementation device thereof provided by the invention have the advantages that the design is reasonable, the structure is simple, and the implementation device is suitable for the heat resistance heat flow meter calibration method utilizing an axial heat conduction principle.
Description
Technical field
What the present invention relates to is the heat flow meter calibration steps in a kind of heat transfer technology field, particularly utilizes TR heat flow meter calibration steps and the device for carrying out said thereof of axial thermal conductivity principle.
Background technology
Heat flow meter is the sensor of testing heat flow density, and present most widely used heat flux sensor has two big classes: a kind of is the TR sensor that utilizes the axial thermal conductivity principle, and below 200 ℃, heat flow density is at 2kW/m usually for serviceability temperature
2Below, be used for testing heat-insulating property and the thermal loss of underground heat, pipeline or wall, meet national corresponding saving energy test standard, in energy conservation, use extensively, also be the most frequently used a kind of application of heat flow meter; Another kind is the round foil sensor of radially heat conduction principle, and serviceability temperature is higher, and the heat flow density scope can reach 500kW/m
2, be mainly used in the test of the high-level radiation hot-fluid of industrial circles such as metallurgy, chemical industry.Heat flux sensor all will be calibrated before dispatching from the factory preceding or using, and by calibration result the sensitivity coefficient of sensor is adjusted, and sensitivity coefficient is to be determined by heat flow density and output potential by sensor.In order to determine the sensitivity coefficient of heat flux sensor, a stable one dimension hot-fluid with definite direction need be arranged, the numerical value of its heat flow density can accurately be measured.The calibration heat flux sensor need be set up the one dimension heat flow field of stable state, and the numerical value of its heat flow density requires and can accurately provide.The protective heat plate method is in the world one of method of the most general computable heat flow density of generation, and countries such as American and Britain, moral all formulate the national standard of testing the thermal insulation material coefficient of heat conductivity by the protective heat plate method.According to the mode of measuring heat flow density, calibration steps is divided into absolute method and relative method two big classes.The numerical value that absolute method refers to the heat flow density that hot-fluid generation source produces can calculate by tracing to the source to other physical parameters (as electric current, voltage etc.), thereby obtains the sensitivity coefficient of sensor according to computable heat flow density and potential value.Relative method refers in the one-dimensional stable heat flow field that forms, and the reading of the heat flow meter that is calibrated and standard heat flow meter is compared, thereby obtain being calibrated the method for the sensitivity coefficient of heat flow meter.Adopt the calibrating installation structure and the similar part that has that adopts absolute method of relative method, but the calculating of heat flow density not to obtain by the test to heating power.
In absolute method, by the electric power accurate Calculation of heating part is come out, be divided by with heating surface (area) (HS, obtain the heat flow density by test specimen.The prerequisite that this absolute method is used is that hot-fluid all is to flow along the direction vertical with hot face, ignores the side thermal loss.But in practical application, because heating plate itself has certain thickness, and exists a fixed difference difference with environment temperature, the side heat waste often can not be ignored, and the amount of side heat waste also is difficult to accurate Calculation, and is very high for the compensation requirement of side heat waste.So for a long time, applying of absolute method has been subjected to very big restriction.Another is relative method, the heat flux sensor that namely adopts the heat flux sensor of high accuracy grade to come staking-out work to use, but at present because the accuracy of heat flux sensor own is not high, and there is not the national standard of deciding grade and level, so this method does not have actual application case at home.
In the prior art document, the patent documentation relevant with the heat flow meter calibration steps is also fewer.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of TR heat flow meter calibration steps and device for carrying out said thereof are provided, the side hot-fluid loss of consideration hot plate that can be less.
The present invention relates to a kind of TR heat flow meter calibration steps, comprise the steps: step 1, between hot plate and cold drawing, arrange coefficient of heat conductivity on-gauge plate and TR heat flow meter successively, arrange temperature sensor respectively in the both sides of coefficient of heat conductivity on-gauge plate; Step 2, the thickness of heat conducting coefficient measuring on-gauge plate and temperature difference thereof are according to formula
Calculate the heat flow density by the coefficient of heat conductivity on-gauge plate, wherein q is the heat flow density by the coefficient of heat conductivity on-gauge plate, and λ is the coefficient of heat conductivity of coefficient of heat conductivity on-gauge plate, and △ t is the temperature difference of coefficient of heat conductivity on-gauge plate both sides, the thickness of δ-coefficient of heat conductivity on-gauge plate; Step 3, the output potential of measurement TR heat flow meter is according to formula
Calculate the sensitivity coefficient of heat flow meter, wherein C is the sensitivity coefficient of TR heat flow meter, and q is the heat flow density by the TR heat flow meter, and E is the output potential of TR heat flow meter.
The invention still further relates to a kind of device of implementing the above TR heat flow meter calibration steps, comprise heat-insulating shield, hot plate, cold drawing, coefficient of heat conductivity on-gauge plate and, the temperature control method of cold drawing is the constant temperature cooling jacket, between heat-insulating shield and cold drawing, arrange hot plate, coefficient of heat conductivity on-gauge plate and TR heat flow meter successively, the both sides of coefficient of heat conductivity on-gauge plate are arranged temperature sensor respectively, and the heating element of hot plate is the polyimide Electric radiant Heating Film.
In the course of work of the present invention, thickness by known coefficient of heat conductivity on-gauge plate, temperature difference with and coefficient of heat conductivity, just can calculate the heat flow density by the coefficient of heat conductivity on-gauge plate, because the heat flow density by heat-conducting plate is identical with the heat flow density of passing through the TR heat flow meter, add the output potential of known TR heat flow meter, just can calculate the sensitivity coefficient of TR heat flow meter, thereby realize the calibration to the TR heat flow meter.
Compared with prior art, the present invention has following beneficial effect and is: the present invention is reasonable in design, and is simple in structure; In calibration process, only need to guarantee that TR heat flow meter put area does not have the side heat waste and gets final product, do not need as absolute method, consider the side heat waste of whole heating surface (area) (HS.
Description of drawings
Fig. 1 is structural representation of the present invention;
Wherein: 1, heat-insulating shield, 2, hot plate, 3, cold drawing, 4, the coefficient of heat conductivity on-gauge plate, 5, the TR heat flow meter.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment is prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment
As shown in Figure 1, the present invention includes heat-insulating shield 1, hot plate 2, cold drawing 3, coefficient of heat conductivity on-gauge plate 4 and TR heat flow meter 5, the temperature control method of cold drawing 3 is the constant temperature cooling jacket, between heat-insulating shield 1 and cold drawing 3, arrange hot plate 2, coefficient of heat conductivity on-gauge plate 4 and TR heat flow meter 5 successively, the both sides of coefficient of heat conductivity on-gauge plate 4 are arranged temperature sensor respectively, and the heating element of hot plate 2 is the polyimide Electric radiant Heating Film.
In the course of work of the present invention, according to formula
Just can calculate the heat flow density by the coefficient of heat conductivity on-gauge plate, wherein q is the heat flow density by the coefficient of heat conductivity on-gauge plate, λ is the coefficient of heat conductivity of coefficient of heat conductivity on-gauge plate, and △ t is the temperature difference of coefficient of heat conductivity on-gauge plate both sides, the thickness of δ-coefficient of heat conductivity on-gauge plate; According to formula
Just can calculate the sensitivity coefficient of heat flow meter, wherein C is the sensitivity coefficient of TR heat flow meter, and q is for namely passing through the heat flow density of coefficient of heat conductivity on-gauge plate by the heat flow density of TR heat flow meter, and E is the output potential of TR heat flow meter.Thereby realize the calibration to the TR heat flow meter.
Claims (2)
1. a TR heat flow meter calibration steps is characterized in that, comprises the steps: step 1, arranges coefficient of heat conductivity on-gauge plate and TR heat flow meter between hot plate and cold drawing successively, arranges temperature sensor respectively in the both sides of coefficient of heat conductivity on-gauge plate; Step 2, the thickness of heat conducting coefficient measuring on-gauge plate and temperature difference thereof are according to formula
Calculate the heat flow density by the coefficient of heat conductivity on-gauge plate, wherein q is the heat flow density by the coefficient of heat conductivity on-gauge plate, and λ is the coefficient of heat conductivity of coefficient of heat conductivity on-gauge plate, and △ t is the temperature difference of coefficient of heat conductivity on-gauge plate both sides, the thickness of δ-coefficient of heat conductivity on-gauge plate; Step 3, the output potential of measurement TR heat flow meter is according to formula
Calculate the sensitivity coefficient of heat flow meter, wherein C is the sensitivity coefficient of TR heat flow meter, and q is the heat flow density by the TR heat flow meter, and E is the output potential of TR heat flow meter.
2. device for carrying out said of implementing the described TR heat flow meter of claim 1 calibration steps, comprise heat-insulating shield (1), hot plate (2) and cold drawing (3), the temperature control method of cold drawing (3) is the constant temperature cooling jacket, it is characterized in that, also comprise coefficient of heat conductivity on-gauge plate (4) and TR heat flow meter (5), between heat-insulating shield (1) and cold drawing (3), arrange hot plate (2) successively, coefficient of heat conductivity on-gauge plate (4) and TR heat flow meter (5), the both sides of coefficient of heat conductivity on-gauge plate (4) are arranged temperature sensor respectively, and the heating element of hot plate (2) is the polyimide Electric radiant Heating Film.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411996A (en) * | 2013-08-05 | 2013-11-27 | 电子科技大学 | Measuring equipment and measuring method for heat conductivity coefficients of solid materials |
| CN103557945A (en) * | 2013-10-09 | 2014-02-05 | 中国科学院力学研究所 | Method for calibrating heat flow meter through blackbody radiation |
| CN103575427A (en) * | 2013-09-24 | 2014-02-12 | 中国科学院力学研究所 | Method for calibrating heat flow meter by adopting heat conduction |
| CN103868948A (en) * | 2014-02-26 | 2014-06-18 | 天津大学 | Method for correcting heat exchange power of heat conductivity tester through single-test piece guarded hot plate method |
| CN104155005A (en) * | 2014-08-21 | 2014-11-19 | 中国航空工业集团公司北京长城计量测试技术研究所 | Comparison method radiant heat-flow meter calibration apparatus |
| CN104215658A (en) * | 2014-08-20 | 2014-12-17 | 中国科学院力学研究所 | High-temperature heat conduction calibration method and high-temperature heat conduction calibration device |
| CN104180929B (en) * | 2014-08-06 | 2016-08-17 | 山东省计算中心（国家超级计算济南中心） | A kind of calibration steps of TR heat flow transducer |
| CN106323493A (en) * | 2016-08-10 | 2017-01-11 | 清华大学 | Temperature field and heat flow density field measurement integrated device and manufacturing method therefor |
| CN108152325A (en) * | 2017-12-15 | 2018-06-12 | 浙江省计量科学研究院 | A kind of method based on Guarded hot plate calibration heat-flow meter method conductometer |
| CN108844993A (en) * | 2018-06-28 | 2018-11-20 | 广州市建筑科学研究院有限公司 | A method of for correcting enclosure structure heat transfer coefficient on-site test result |
| CN109781309A (en) * | 2018-12-26 | 2019-05-21 | 西安交通大学 | A kind of high-accuracy calibration device and method of film-type heat-flow meter |
| CN113176294A (en) * | 2021-04-27 | 2021-07-27 | 内蒙合成化工研究所 | Calibration method of heat conductivity coefficient tester by protective heat flow meter method |
| CN114184033A (en) * | 2021-12-16 | 2022-03-15 | 北京智冶互联科技有限公司 | Method for detecting falling position, thickness and size of refractory material of rotary kiln |
| CN114609178A (en) * | 2022-01-06 | 2022-06-10 | 珠海市运泰利自动化设备有限公司 | Calibration method of high-precision heat flow parameter measurement equipment based on thermocouple |
| CN114624283A (en) * | 2022-01-06 | 2022-06-14 | 珠海市运泰利自动化设备有限公司 | Calibration method of TMP 117-based high-precision heat flow parameter measurement equipment |
| CN114609178B (en) * | 2022-01-06 | 2024-11-08 | 珠海市运泰利自动化设备有限公司 | Calibration method based on thermocouple high-precision heat flow parameter measurement equipment |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411996A (en) * | 2013-08-05 | 2013-11-27 | 电子科技大学 | Measuring equipment and measuring method for heat conductivity coefficients of solid materials |
| CN103411996B (en) * | 2013-08-05 | 2016-03-02 | 电子科技大学 | Solid material heat conductivity measurement mechanism and measuring method |
| CN103575427A (en) * | 2013-09-24 | 2014-02-12 | 中国科学院力学研究所 | Method for calibrating heat flow meter by adopting heat conduction |
| CN103575427B (en) * | 2013-09-24 | 2016-01-13 | 中国科学院力学研究所 | A kind of method adopting heat conduction to demarcate heat flow meter |
| CN103557945A (en) * | 2013-10-09 | 2014-02-05 | 中国科学院力学研究所 | Method for calibrating heat flow meter through blackbody radiation |
| CN103557945B (en) * | 2013-10-09 | 2016-05-04 | 中国科学院力学研究所 | A kind of black body radiation is demarcated the method for heat-flow meter |
| CN103868948B (en) * | 2014-02-26 | 2016-08-17 | 天津大学 | The modification method of the hot exchange power of single test specimen Guarded hot plate Conduction Coefficient Detector Basing |
| CN103868948A (en) * | 2014-02-26 | 2014-06-18 | 天津大学 | Method for correcting heat exchange power of heat conductivity tester through single-test piece guarded hot plate method |
| CN104180929B (en) * | 2014-08-06 | 2016-08-17 | 山东省计算中心（国家超级计算济南中心） | A kind of calibration steps of TR heat flow transducer |
| CN104215658A (en) * | 2014-08-20 | 2014-12-17 | 中国科学院力学研究所 | High-temperature heat conduction calibration method and high-temperature heat conduction calibration device |
| CN104155005A (en) * | 2014-08-21 | 2014-11-19 | 中国航空工业集团公司北京长城计量测试技术研究所 | Comparison method radiant heat-flow meter calibration apparatus |
| CN104155005B (en) * | 2014-08-21 | 2017-02-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | Comparison method radiant heat-flow meter calibration apparatus |
| CN106323493A (en) * | 2016-08-10 | 2017-01-11 | 清华大学 | Temperature field and heat flow density field measurement integrated device and manufacturing method therefor |
| CN108152325B (en) * | 2017-12-15 | 2020-02-21 | 浙江省计量科学研究院 | Method for calibrating heat conductivity instrument based on heat shield plate method |
| CN108152325A (en) * | 2017-12-15 | 2018-06-12 | 浙江省计量科学研究院 | A kind of method based on Guarded hot plate calibration heat-flow meter method conductometer |
| CN108844993A (en) * | 2018-06-28 | 2018-11-20 | 广州市建筑科学研究院有限公司 | A method of for correcting enclosure structure heat transfer coefficient on-site test result |
| CN109781309A (en) * | 2018-12-26 | 2019-05-21 | 西安交通大学 | A kind of high-accuracy calibration device and method of film-type heat-flow meter |
| CN113176294A (en) * | 2021-04-27 | 2021-07-27 | 内蒙合成化工研究所 | Calibration method of heat conductivity coefficient tester by protective heat flow meter method |
| CN114184033A (en) * | 2021-12-16 | 2022-03-15 | 北京智冶互联科技有限公司 | Method for detecting falling position, thickness and size of refractory material of rotary kiln |
| CN114609178A (en) * | 2022-01-06 | 2022-06-10 | 珠海市运泰利自动化设备有限公司 | Calibration method of high-precision heat flow parameter measurement equipment based on thermocouple |
| CN114624283A (en) * | 2022-01-06 | 2022-06-14 | 珠海市运泰利自动化设备有限公司 | Calibration method of TMP 117-based high-precision heat flow parameter measurement equipment |
| CN114624283B (en) * | 2022-01-06 | 2024-10-08 | 珠海市运泰利自动化设备有限公司 | Calibration method of high-precision heat flow parameter measurement equipment based on TMP117 |
| CN114609178B (en) * | 2022-01-06 | 2024-11-08 | 珠海市运泰利自动化设备有限公司 | Calibration method based on thermocouple high-precision heat flow parameter measurement equipment |
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Application publication date: 20130710 |