CN103048354B - Device for testing high-temperature heat conductivity of fibrous heat-insulation felt - Google Patents
Device for testing high-temperature heat conductivity of fibrous heat-insulation felt Download PDFInfo
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- CN103048354B CN103048354B CN201110311593.XA CN201110311593A CN103048354B CN 103048354 B CN103048354 B CN 103048354B CN 201110311593 A CN201110311593 A CN 201110311593A CN 103048354 B CN103048354 B CN 103048354B
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- insulation
- temperature
- soaking plate
- heat
- heat conductivity
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Abstract
The invention belongs to the field of a device for testing heat conductivity of a material. A device for testing high-temperature heat conductivity of fibrous heat-insulation felt is characterized in that a vacuum system is connected with an induction furnace cavity; a water-cooling tray is fixedly arranged at the center of the inner bottom wall of the induction furnace cavity; a heat preservation system is arranged on the water-cooling tray; an outer heat preservation barrel is divided into an upper part and a lower part which are separated from each other by a sample to be tested; a testing system is arranged at the top of an inner support cylinder by a lower soaking plate, a lower high-temperature heat flow meter is arranged at the center of the upper surface of the lower soaking plate, and the test sample is put on the lower soaking plate; an upper soaking plate is arranged above the test sample, and an upper high-temperature heat flow meter is arranged at the center of the lower surface of the upper soaking plate; and a graphite heating disc is arranged at the upper end of the inner cylinder, and an inner heat preservation cover is arranged at the upper end of the graphite heating disc. The device provided by the invention is simple in structure, has practical functions, and has the advantages of saving resources and being convenient to use and high in applicability. The accuracy of the testing device is improved as the testing device adopts a steady state method with double heat flow meters for measurement.
Description
Technical field
The invention belongs to the field of material thermal conductivity proving installation, particularly a kind of high-temperature heat conductivity special purpose device measuring Fibrous insulation.
Background technology
Thermal conductivity is the physical quantity characterizing material heat conduction property.Different materials, the not equal factor of its structure, modal change or service condition all has obvious impact to the thermal conductivity of material, therefore accurately will grasp the thermophysical property of material, need to measure by experiment.
At present, the proving installation of the heat-conductive characteristic under material at high temperature condition is still few, uses special equipment to measure, and consumptive material is comparatively large, and the general dull and stereotyped heat flow method proving installation adopted, its less stable, accurate testing degree has much room for improvement.
Summary of the invention
The present invention, for overcoming above-mentioned not enough problem, provides the device that a kind of Fibrous insulation high-temperature heat conductivity is tested, and structure is simple, adopts two heat flow meter steady state method to measure, improves the precision of proving installation.
The technical scheme that the present invention is adopted for achieving the above object is: a kind of device of Fibrous insulation high-temperature heat conductivity test, and comprise induction furnace cavity, vacuum system, heating system, heat-insulation system and test macro, vacuum system connects induction furnace cavity; Bottom wall central position fixed installation water-cooled pallet in induction furnace cavity; Heat-insulation system placed by water-cooled pallet, heat-insulation system adopts insulation quilt out cylinder to be arranged on water-cooled pallet, insulation enclosing cover is installed at insulation quilt out cylinder top, form insulation urceolus, upper and lower two parts are divided in insulation urceolus, upper and lower two parts are separated by testing sample, and lower part supports out cylinder, support inner cylinder is set with successively from outside to inside and is placed on water-cooled pallet, and upper part out cylinder and inner cylinder are set with successively from outside to inside and are placed on testing sample; Test macro adopts lower soaking plate to be installed on and supports inner cylinder top, bottom high-temperature hot flowmeter is installed on lower soaking plate upper surface center, test sample is positioned on lower soaking plate, upper soaking plate is installed on test sample, upper pyrometer heat flow meter is installed on soaking plate lower surface center, heating graphite disk is installed on inner cylinder upper end, and insulation inner cap is installed on heating graphite disk upper end; Bottom temperature thermocouple is placed in immediately below the high-temperature hot flowmeter of bottom, and top temperature thermocouple is placed in directly over upper pyrometer heat flow meter, and temperature-control heat couple is placed in immediately below heating graphite disk.
Described induction furnace cavity adopts the body of heater with bell, and inductive coil is fixedly installed in medium position in body of heater, and heat-insulation system is placed in inductive coil inside.
Described vacuum system adopts mechanical pump, lobe pump and diffusion pump to be installed on respectively on furnace body outer wall.
Described insulation quilt out cylinder and insulation enclosing cover all adopt ceramic fiber blanket to make.
Described support out cylinder, support inner cylinder, out cylinder, inner cylinder and insulation inner cap all adopt hard carbon fibrofelt to make.
Described lower soaking plate and upper soaking plate adopt silit to make.
Described bottom temperature thermocouple, top temperature thermocouple and temperature-control heat couple adopt Wolfram rhenium heat electric couple to make.
Present device structure is simple, practical function, in order to provide the related data of Fibrous insulation high-temperature heat conductivity, develop a kind of device testing Effective Thermal Conductivity of Fibrous Insulations under hot environment, device is placed in vacuum induction furnace cavity, adopt Medium frequency induction and heating graphite disk heat temperature raising, heat-insulation system makes sidewall and top become adiabatic wall, cause hot-fluid only from vertical direction unidirectional delivery, test sample upper and lower surface all installs soaking plate, make upper and lower surface uniformity of temperature profile, thermopair is adopted to control the temperature of graphite thermal source temperature and test testing sample upper and lower surface, adopt upper and lower high-temperature heat flux measurement examination by the heat flux of sample upper and lower surface, finally can calculate the high-temperature heat conductivity of material.This device has the following advantages:
1, this device does not need special equipment, just uses induction furnace cavity and measures;
2, the size adjustable of test material sample;
3, adopt two heat flow meter steady state method to measure, improve the precision of proving installation;
4, probe temperature is high, reaches as high as 2000 DEG C.
To sum up, the invention provides the device of a kind of Fibrous insulation high-temperature heat conductivity test, have and economize on resources, easy to use, applicability is high, the advantage that measuring accuracy is high.
Accompanying drawing explanation
Accompanying drawing 1 is the apparatus structure sketch of a kind of Fibrous insulation high-temperature heat conductivity test.
In figure: 1. bell, 2. mechanical pump, 3. lobe pump, 4. diffusion pump, 5. insulation quilt out cylinder, 6. out cylinder, 7. inner cylinder, 8. upper pyrometer heat flow meter, 9. test sample, 10. bottom high-temperature hot flowmeter, 11. support out cylinder, 12. water-cooled pallets, 13. support inner cylinder, 14. bodies of heater, 15. times soaking plate, 16. bottom temperature thermocouples, 17. top temperature thermocouples, soaking plate on 18., 19. inductive coils, 20. temperature-control heat couple, 21. heating graphite disks, 22. insulation inner caps, 23. insulation enclosing covers.
Embodiment
Describe the present invention in detail below in conjunction with specific embodiment and accompanying drawing, but the present invention is not limited to specific embodiment.
As shown in Figure 1, a kind of device of Fibrous insulation high-temperature heat conductivity test, comprise induction furnace cavity, vacuum system, heating system, heat-insulation system and test macro, vacuum system connects induction furnace cavity; Bottom wall central position fixed installation water-cooled pallet in induction furnace cavity; Heat-insulation system placed by water-cooled pallet, vacuum system is installed on induction furnace chamber outer wall, water-cooled pallet 12 is fixedly installed in bottom wall central position in induction furnace cavity, induction furnace cavity adopts bell 1 to be installed on body of heater 14, inductive coil 19 is fixedly installed in body of heater 14 medium position, and vacuum system adopts mechanical pump 2, lobe pump 3 and diffusion pump 4 to be installed on respectively on body of heater 14 outer wall.
Heat-insulation system adopts insulation quilt out cylinder to be arranged on pallet, insulation enclosing cover is installed at insulation quilt out cylinder top, form insulation urceolus, upper and lower two parts are divided in insulation urceolus, upper and lower two parts are separated by testing sample, and lower part supports out cylinder 11, support inner cylinder 13 is installed on water-cooled pallet 12 from outside to inside successively; Upper part out cylinder 6 is installed on test sample 9, and inner cylinder 7 is installed on soaking plate 18; Heating graphite disk 21 is installed on inner cylinder 7, and insulation inner cap 22 is installed on heating graphite disk 21, and insulation enclosing cover 23 is installed on insulation inner cap 22.
Temp measuring system adopts lower soaking plate 15 to be installed on and supports inner cylinder 13 top, bottom high-temperature hot flowmeter 10 is installed on lower soaking plate 15 upper surface center, test sample 9 is positioned on lower soaking plate 15, upper soaking plate 18 is installed on test sample 9, and upper pyrometer heat flow meter 8 is installed on soaking plate 18 lower surface center; Bottom temperature thermocouple 16 is placed in immediately below bottom high-temperature hot flowmeter 10, and top temperature thermocouple 17 is placed in directly over upper pyrometer heat flow meter 8, and temperature-control heat couple 20 is placed in immediately below heating graphite disk 21; Bottom temperature thermocouple 16, top temperature thermocouple 17 and temperature-control heat couple 20 adopt W5/26 Wolfram rhenium heat electric couple to make.
Insulation quilt out cylinder 5 and insulation enclosing cover 23 all adopt ceramic fiber blanket to make; Supporting out cylinder 11, support inner cylinder 13, out cylinder 6, inner cylinder 7 and insulation inner cap 22 all adopts hard carbon fibrofelt to make; Lower soaking plate 15 and upper soaking plate 18 adopt silit to make.
When testing, according to above-mentioned steps, detected materials sample and device are installed, close bell, adopt vacuum system that the vacuum of body of heater is extracted into 0.01Pa, to inductive coil heating, adopt Frequency Induction Heating, heating graphite disk 21 starts heat temperature raising, due to the insulation effect of out cylinder 6, inner cylinder 7, insulation inner cap 22, insulation quilt out cylinder 5 and insulation enclosing cover 23, thus make sidewall and top become adiabatic wall, cause hot-fluid only from vertical direction unidirectional delivery.
Sample upper and lower surface all installs soaking plate, make upper and lower surface uniformity of temperature profile, W5/26 type Wolfram rhenium heat electric couple is adopted to control the temperature of graphite thermal source temperature and test testing sample upper and lower surface, maximum operation (service) temperature can reach 1800-2000 DEG C, temperature acquisition carries out digital independent by AI-701 type temperature instrumentation, and data is sent to computing machine preservation; Adopt upper and lower high-temperature heat flux measurement examination by the heat flux of sample upper and lower surface.
In order to ensure the degree of accuracy of proving installation, adopting double heat flux meter method, testing the heat flux q by upper pyrometer heat flow meter 16 respectively
1, by the heat flux q of bottom high-temperature hot flowmeter 10
2, calculate evenly heat flow
, after test reaches stable state
time, namely think that this device is close to one-dimensional stable heat transfer.Now by top temperature thermocouple 17 and bottom temperature thermocouple 16 measuring tempeature, temperature is designated as T respectively
1and T
2,
, according to temperature data, by Fourier's law:
, wherein
,
for the thickness of detected materials, calculate the efficient thermal conductivity of detected materials
.
The present invention, on the heat conducting basis of one-dimensional stable, proposes to adopt the device of efficient thermal conductivity under two heat flow meter and different-thickness sample test Fibrous insulation hot conditions, gives the quantitative criteria of One-dimensional heat transfer simultaneously.
Claims (7)
1. a device for Fibrous insulation high-temperature heat conductivity test, comprise induction furnace cavity, vacuum system, heating system, heat-insulation system and test macro, is characterized in that: vacuum system connects induction furnace cavity; Bottom wall central position fixed installation water-cooled pallet in induction furnace cavity; Heat-insulation system placed by water-cooled pallet, heat-insulation system adopts insulation quilt out cylinder to be arranged on water-cooled pallet, insulation enclosing cover is installed at insulation quilt out cylinder top, form insulation urceolus, upper and lower two parts are divided in insulation urceolus, upper and lower two parts are separated by testing sample, and lower part supports out cylinder, support inner cylinder is set with successively from outside to inside and is placed on water-cooled pallet, and upper part out cylinder and inner cylinder are set with successively from outside to inside and are placed on testing sample; Test macro adopts lower soaking plate to be installed on and supports inner cylinder top, bottom high-temperature hot flowmeter is installed on lower soaking plate upper surface center, test sample is positioned on lower soaking plate, upper soaking plate is installed on test sample, upper pyrometer heat flow meter is installed on soaking plate lower surface center, heating graphite disk is installed on inner cylinder upper end, and insulation inner cap is installed on heating graphite disk upper end; Bottom temperature thermocouple is placed in immediately below the high-temperature hot flowmeter of bottom, and top temperature thermocouple is placed in directly over upper pyrometer heat flow meter, and temperature-control heat couple is placed in immediately below heating graphite disk.
2. the device of a kind of Fibrous insulation high-temperature heat conductivity test according to claim 1, is characterized in that: described induction furnace cavity adopts bell (1) to be installed on body of heater (14), and inductive coil (19) is fixedly installed in body of heater (14) medium position.
3. the device of a kind of Fibrous insulation high-temperature heat conductivity test according to claim 1, is characterized in that: described vacuum system adopts mechanical pump (2), lobe pump (3) and diffusion pump (4) to be installed on respectively on body of heater (14) outer wall.
4. the device of a kind of Fibrous insulation high-temperature heat conductivity test according to claim 1, is characterized in that: described insulation quilt out cylinder (5) and insulation enclosing cover (23) all adopt ceramic fiber blanket to make.
5. the device of a kind of Fibrous insulation high-temperature heat conductivity test according to claim 1, is characterized in that: described support out cylinder (11), support inner cylinder (13), out cylinder (6), inner cylinder (7) and insulation inner cap (22) all adopt hard carbon fibrofelt to make.
6. the device of a kind of Fibrous insulation high-temperature heat conductivity test according to claim 1, is characterized in that: described lower soaking plate (15) and upper soaking plate (18) adopt silit to make.
7. the device of a kind of Fibrous insulation high-temperature heat conductivity test according to claim 1, is characterized in that: described bottom temperature thermocouple (16), top temperature thermocouple (17) and temperature-control heat couple (20) adopt Wolfram rhenium heat electric couple to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110311593.XA CN103048354B (en) | 2011-10-14 | 2011-10-14 | Device for testing high-temperature heat conductivity of fibrous heat-insulation felt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110311593.XA CN103048354B (en) | 2011-10-14 | 2011-10-14 | Device for testing high-temperature heat conductivity of fibrous heat-insulation felt |
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| Publication Number | Publication Date |
|---|---|
| CN103048354A CN103048354A (en) | 2013-04-17 |
| CN103048354B true CN103048354B (en) | 2015-06-17 |
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|---|---|---|---|
| CN201110311593.XA Expired - Fee Related CN103048354B (en) | 2011-10-14 | 2011-10-14 | Device for testing high-temperature heat conductivity of fibrous heat-insulation felt |
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| 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 |
| CN110940695B (en) * | 2019-11-28 | 2022-04-26 | 航天特种材料及工艺技术研究所 | Heat gathering device |
| CN110907490B (en) * | 2019-11-28 | 2022-02-11 | 航天特种材料及工艺技术研究所 | Device and method for testing heat conductivity of high-heat-conductivity material |
| CN114965569B (en) * | 2022-07-27 | 2022-09-30 | 南通三瑞纺织科技有限公司 | Device for detecting heat preservation and heat insulation performance of curtain fabric |
| CN115598174B (en) * | 2022-12-12 | 2023-03-14 | 常州京洋半导体材料科技有限公司 | Carbon fiber heat preservation felt check out test set |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657923A (en) * | 2004-02-21 | 2005-08-24 | 鸿富锦精密工业（深圳）有限公司 | Device for measuring thermal coefficient |
| CN200953005Y (en) * | 2006-05-26 | 2007-09-26 | 甘肃省建材科研设计院 | Apparatus for detecting thermal resistance/heat transfer coefficient of blocks |
| CN101126729A (en) * | 2007-09-18 | 2008-02-20 | 南京航空航天大学 | Double heat flux gauge steady state method for measuring material heat conductivity |
-
2011
- 2011-10-14 CN CN201110311593.XA patent/CN103048354B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657923A (en) * | 2004-02-21 | 2005-08-24 | 鸿富锦精密工业（深圳）有限公司 | Device for measuring thermal coefficient |
| CN200953005Y (en) * | 2006-05-26 | 2007-09-26 | 甘肃省建材科研设计院 | Apparatus for detecting thermal resistance/heat transfer coefficient of blocks |
| CN101126729A (en) * | 2007-09-18 | 2008-02-20 | 南京航空航天大学 | Double heat flux gauge steady state method for measuring material heat conductivity |
Non-Patent Citations (1)
| Title |
|---|
| 纤维隔热毡有效热导率测试方法研究;何飞等;《宇航材料工艺》;20071231(第5期);第68页 * |
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