CN105021650B - A kind of Guarded hot plate heat conductivity measuring device - Google Patents
A kind of Guarded hot plate heat conductivity measuring device Download PDFInfo
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- CN105021650B CN105021650B CN201510489385.7A CN201510489385A CN105021650B CN 105021650 B CN105021650 B CN 105021650B CN 201510489385 A CN201510489385 A CN 201510489385A CN 105021650 B CN105021650 B CN 105021650B
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Abstract
The invention belongs to field of measuring technique.Using single sample, lower hot plate furnace binding, displacement transducer is set on cold drawing surface, Volume Changes of the sample in test process are described with cold drawing displacement, measured while realizing heat conduction swollen with line parameter；Using one-dimensional hot-fluid conduction pattern, reduce such environmental effects, ensure measurement data objectivity.Guarded hot plate heat conductivity measuring device of the present invention, is made up of body of heater, control and measuring system, and displacement measurement system is set on cold drawing (1) surface of single sample, lower hot plate body of heater；Displacement measurement system is displacement transducer (2).The Guarded hot plate heat conductivity measuring device, it is simple in construction, it is easily operated, suitable in room temperature to 600 DEG C of temperature ranges, the accurate measurement for the material thermal conductivity that thickness of sample varies with temperature, while the swollen characterisitic parameter of line for providing material.
Description
Technical field
The invention belongs to field of measuring technique, it is related to the capacity of heat transmission e measurement technology of material, more particularly to Guarded hot plate
Thermal conductivity measurement technology.
Background technology
Thermal conductivity factor is defined as under limit, and the per unit thermograde perpendicular to unit direction passes through in unit area
Hot-fluid, be evaluate thermal conductivity of material important parameter, directly reflection material heat-proof quality quality.Thermal conductivity measurement side
Method has two methods of stable state and dynamic.These methods have strict requirements to material category and shape, and wherein protective heat plate is owned by France
In steady state method, measurement accuracy highest.Guarded hot plate is the temperature compensation principle based on metering plate, by measuring thickness of sample side
The thermal conductivity factor of solid material is measured to the parameter such as one-dimensional hot-fluid size and thermograde.
CN 103675017A, which describe a kind of material thermal conductivity test device, to be included：Hot plate heating system, cold drawing cooling
System, electric lifting system, heat flow metering system, electrical control and measuring system and industrial computer software control system；Hot plate
Heating system is horizontally disposed and above cold drawing cooling system.The core plate of the hot plate heating system, protective plate and backboard are equal
Including heating resistor film and metal decking.Heating resistor film is double hot face heaters, and each panel-level of hot plate heating system is set
Put and above cold drawing cooling system, each panel material of hot plate is aluminium alloy.This instrument belongs to low form Guarded hot plate
Thermal conductivity factor instrument.
German Nai Chi instrument companies produce GHP456Titan type Guarded hot plate thermal conductivity factor instruments.Therm-param method
Using the PT100 platinum sensors of sheet, hot plate, cold drawing connect different control systems and stabilization from protective unit respectively
Power supply.Device possesses vacuum and different atmosphere defencive function, using double sample designs, does not possess the automatic measurement work(of thickness of sample
Energy.
At present, domestic and international commercially available Guarded hot plate thermal conductivity factor instrument has higher precision and wider measurement temperature model
Enclose, do not account for sample and raise the problem of expanding with temperature.
The content of the invention
It is an object of the invention to provide a kind of Guarded hot plate thermal conductivity factor that can realize the swollen parameter measurement of line simultaneously
Measuring apparatus.
The object of the present invention is achieved like this：Using single sample, lower hot plate furnace binding, displacement is set on cold drawing surface
Sensor, Volume Changes of the sample in test process are described with cold drawing displacement, measured while realizing heat conduction swollen with line parameter；
Using one-dimensional hot-fluid conduction pattern, reduce such environmental effects, ensure measurement data objectivity.
Guarded hot plate heat conductivity measuring device of the present invention, is made up of body of heater, control and measuring system, and it is special
Sign is：Displacement measurement system is set on the surface of cold drawing 1 of single sample, lower hot plate body of heater, structure is as shown in Figure 1.
Guarded hot plate heat conductivity measuring device of the present invention, is made up of body of heater, control and measuring system, and it is special
Sign is：The displacement measurement system is cold drawing displacement transducer 2.
Guarded hot plate heat conductivity measuring device of the present invention, is made up of body of heater, control and measuring system, and it is special
Sign is：Metering plate 3, the combining structure of interior guarded hot plate 5 and plate washer 4 after heater, middle scheming centered on the hot plate of the body of heater
Template center is suspended in plate washer top after heater, and body of heater cross-section structure is as shown in Figure 1.
Guarded hot plate heat conductivity measuring device of the present invention, is made up of body of heater, control and measuring system, and it is special
Sign is：Symmetrical preset cascade groove centered on the bucket shape structure of plate washer 4 after the heater.
Guarded hot plate heat conductivity measuring device of the present invention, is made up of body of heater, control and measuring system, and it is special
Sign is：Four angles of central metering plate 3 are connected with interior guarded hot plate 5, between preset clearance 6, structure is as shown in Figure 2.
Guarded hot plate heat conductivity measuring device of the present invention, is made up of body of heater, control and measuring system, and it is special
Sign is：The displacement measurement system is two groups of displacement transducers and adjustment and measuring system, one group of measurement displacement transducer 2
The surface of cold drawing 1 is arranged on, monitors cold drawing displacement in real time；Another group is that body of heater displacement transducer 7 is arranged on the table of body of heater top panel 8
Face, two groups of data are extracted by adjustment and measuring system and calculate cold drawing displacement, structure is as shown in Figure 3.
Guarded hot plate heat conductivity measuring device of the present invention, it is simple in construction, it is easily operated, suitable for room temperature extremely
In 600 DEG C of temperature ranges, the accurate measurement for the material thermal conductivity that thickness of sample varies with temperature, while the line for providing material is swollen
Characterisitic parameter.
Brief description of the drawings
Fig. 1 heat conductivity measuring device structural representations of the present invention
Guarded hot plate and central metering plate structure schematic diagram in Fig. 2 heat conductivity measuring devices of the present invention
Fig. 3 another heat conductivity measuring device structural representations of the present invention
Wherein：1- cold drawings, 2- cold drawing displacement transducers, 3- central metering plates, plate washer after 4- heaters, shield heat in 5-
Plate, 6- gaps, 7- body of heater displacement transducers, 8- top panels,
Embodiment
It is described in further detail below in conjunction with the accompanying drawings and by instantiation to the present invention.
Single assay furnace build cavity area 300mm × 300mm, cold drawing are arranged on above body of heater, and hot plate is arranged on lower section, sample
It is placed between hot and cold plate.
Hot plate is made up of central metering plate and plate washer after interior guarded hot plate and heater.Central metering plate is 120mm × 120mm
Flat board, interior guarded hot plate are " returning " font, and outer " mouth " shape size is 300mm × 300mm, and interior " mouth " shape size is
121mm×121mm；Interior guarded hot plate and central metering plate is process by same thickness 10mm heat-resistance stainless steel plates, interior shield heat
Gap wide processing 1mm is as air heat insulation band among plate and central metering plate, in four angular positions of central metering plate and interior shield
Hot plate leaves the wide coupling parts of 1mm；
Plate washer formal parameter 300mm × 300mm × 10mm squares, process three groups of platforms between two parties from top to bottom after heater
Rank, parameter 120mm × 120mm suitable for reading.
Heater is fixed on metering back, vacantly on plate washer after heater, completes body of heater processing.
Using range 100mm, the Linear displacement transducer of precision 0.3% is fixed on cold drawing surface.
Displacement transducer, body of heater measurement and control system are connected according to a conventional method, obtain device of the present invention.
In use, placing sample according to a conventional method, covering cold drawing, regulation displacement transducer to zero point, add according to a conventional method
Heat and test, can obtain thermal conductivity factor and linear expansion coefficient simultaneously.
Claims (3)
- It is single sample, lower heat 1. a kind of Guarded hot plate heat conductivity measuring device, is made up of body of heater, control and measuring system Plate furnace binding, displacement measurement system is set on cold drawing (1) surface, it is characterised in that：Measured centered on the hot plate of the body of heater The combining structure of plate washer (4) after plate (3), interior guarded hot plate (5) and heater, central metering plate center are suspended in after heater on plate washer Side；The displacement measurement system is two groups of displacement transducers and adjustment and measuring system, and one group of measurement is set with displacement transducer (2) Put on cold drawing (1) surface, another group is that body of heater is arranged on body of heater top panel (8) surface with displacement transducer (7).
- 2. Guarded hot plate heat conductivity measuring device according to claim 1, it is characterised in that：Shelves after the heater Symmetrical preset cascade groove centered on the bucket shape structure of plate (4).
- 3. according to the Guarded hot plate heat conductivity measuring device described in any one of claim 1 or 2, it is characterised in that：In Four angles of scheming template (3) are connected with interior guarded hot plate (5), between preset clearance (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510489385.7A CN105021650B (en) | 2015-08-11 | 2015-08-11 | A kind of Guarded hot plate heat conductivity measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510489385.7A CN105021650B (en) | 2015-08-11 | 2015-08-11 | A kind of Guarded hot plate heat conductivity measuring device |
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| CN105021650A CN105021650A (en) | 2015-11-04 |
| CN105021650B true CN105021650B (en) | 2018-03-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211970B (en) * | 2018-11-09 | 2021-03-30 | 中国兵器工业第五九研究所 | Heat insulation performance testing device, heat insulation performance testing method and application |
| CN110907493B (en) * | 2019-11-28 | 2022-05-27 | 航天特种材料及工艺技术研究所 | Method for testing high-temperature thermal conductivity |
| CN113677049B (en) * | 2021-08-19 | 2021-12-24 | 北京林电伟业电子技术有限公司 | Heating unit of heat conductivity coefficient tester |
| CN113677048B (en) * | 2021-08-19 | 2021-12-24 | 北京林电伟业电子技术有限公司 | Heating unit of heat conductivity coefficient tester |
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| US3662587A (en) * | 1970-10-02 | 1972-05-16 | Us Army | Thermal conductivity apparatus |
| CN200962094Y (en) * | 2006-05-31 | 2007-10-17 | 天津佛瑞德科技有限公司 | Heat conduction coefficient measurement device of intelligent temperature-preservation material |
| CN201107284Y (en) * | 2007-11-12 | 2008-08-27 | 中国测试技术研究院热工研究所 | Heat conductivity coefficient test device |
| CN101487805A (en) * | 2008-01-17 | 2009-07-22 | 联茂电子股份有限公司 | Apparatus and method for measuring thermal conduction effect |
| CN101672812A (en) * | 2009-09-03 | 2010-03-17 | 天津大学 | Mechanism and method thereof for detecting clamping force of test piece in flat thermal conductivity coefficient measuring instrument |
| CN201716278U (en) * | 2010-07-19 | 2011-01-19 | 中国建筑科学研究院 | Heat conduction coefficient measuring instrument with protective heat plate method |
| CN102628818A (en) * | 2012-04-24 | 2012-08-08 | 天津大学 | Thermal conduction coefficient tester for single-plate guarded thermal plate method with automatic pressure regulator and thickness measuring device |
| CN102645449A (en) * | 2012-04-18 | 2012-08-22 | 天津大学 | Protective heat flow meter method thermal conductivity coefficient measuring instrument for realizing vacuum insulation and thickness measurement function |
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2015
- 2015-08-11 CN CN201510489385.7A patent/CN105021650B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3662587A (en) * | 1970-10-02 | 1972-05-16 | Us Army | Thermal conductivity apparatus |
| CN200962094Y (en) * | 2006-05-31 | 2007-10-17 | 天津佛瑞德科技有限公司 | Heat conduction coefficient measurement device of intelligent temperature-preservation material |
| CN201107284Y (en) * | 2007-11-12 | 2008-08-27 | 中国测试技术研究院热工研究所 | Heat conductivity coefficient test device |
| CN101487805A (en) * | 2008-01-17 | 2009-07-22 | 联茂电子股份有限公司 | Apparatus and method for measuring thermal conduction effect |
| CN101672812A (en) * | 2009-09-03 | 2010-03-17 | 天津大学 | Mechanism and method thereof for detecting clamping force of test piece in flat thermal conductivity coefficient measuring instrument |
| CN201716278U (en) * | 2010-07-19 | 2011-01-19 | 中国建筑科学研究院 | Heat conduction coefficient measuring instrument with protective heat plate method |
| CN102645449A (en) * | 2012-04-18 | 2012-08-22 | 天津大学 | Protective heat flow meter method thermal conductivity coefficient measuring instrument for realizing vacuum insulation and thickness measurement function |
| CN102628818A (en) * | 2012-04-24 | 2012-08-08 | 天津大学 | Thermal conduction coefficient tester for single-plate guarded thermal plate method with automatic pressure regulator and thickness measuring device |
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