CN86101542A - Double-sample protection hot plate high temperature conductometer - Google Patents
Double-sample protection hot plate high temperature conductometer Download PDFInfo
- Publication number
- CN86101542A CN86101542A CN86101542.8A CN86101542A CN86101542A CN 86101542 A CN86101542 A CN 86101542A CN 86101542 A CN86101542 A CN 86101542A CN 86101542 A CN86101542 A CN 86101542A
- Authority
- CN
- China
- Prior art keywords
- temperature
- constant temperature
- plate
- heater
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
A kind of double-sample protection hot plate high temperature conductometer of measuring non-metal solid heating coefficient or thermal resistance, Range of measuring temp is 500K-1400K.Constant temperature plate adopts carbofrax material, has not only improved probe temperature but also reduced cost; Primary heater adopts earlier permanent wall temperature to exchange the heat-supplying mode of heating, the permanent hot-fluid DC heating in back, has improved test speed; Outside tubular heater is made with Elema; And the accurate collection and the processing of multichannel ultra-weak electronic signal have been realized with microcomputer.
Description
The present invention is a kind of thermal property experiment instrument of measuring the material thermal conductivity energy, is used to measure the coefficient of heat conductivity or the thermal resistance of nonmetal solid material.
At present, the main key issue in the double-sample protection hot plate high temperature heat conduction instrument has three: one, how reasonably to select the various exotic materials in the system of subject; The 2nd, design rational type of heating; The 3rd, design accurate measurement and handle the system of multichannel ultra-weak electronic signal.For the selection of high-temperature material in the system of subject such as constant temperature plate, normally with high temperature resistant stainless steel or noble metal, but the serviceability temperature of high temperature resistant stainless steel generally all is lower than 1273K, and noble metal costs an arm and a leg, and is very uneconomical; The primary heater type of heating normally adopts the DC electric heating method adopted of constant voltage, and it is longer to reach stable time in this way; Potential difference meter is used in the measurement of ultra-weak electronic signal usually, and the conversion of electric signal and temperature and last processing are normally finished by the tester, this has also brought part stochastic error and troublesome poeration.
The purpose of this invention is to provide a kind of high temperature (1400K), quick, accurate, easy, can show and print final testing result and lower-cost double-sample protection hot plate high temperature conductometer automatically.
In order to achieve the above object, designed a system of subject (figure one), the circuit control system of being made up of various temperature control instruments (figure two) reaches DATA REASONING (figure three) and the disposal system of being made up of microcomputer and voltage table etc. (figure four).System of subject is made up of primary heater (1), ring well heater (2), primary heater constant temperature plate (3), ring well heater constant temperature plate (4), upper and lower auxiliary heater (7), upper and lower auxiliary heater constant temperature plate (6), upper and lower cold drawing (9), tubular heater (10), upper and lower heat insulation layer (8), pouring weight (11), thermal insulation material (12), (13), shell (14), base (15), column (20); Master, ring well heater and auxiliary heater all adopt the electro-corundum mullite to make stone or metal plate for standing a stove on as a precaution against fire; Primary heater constant temperature plate (3), ring well heater constant temperature plate (4) are selected nonmetallic materials silit for use, and carborundum content is not less than 85%, and the thickness of plate is 8～12 millimeters; Tubular heater (10) adopts Elema, has both improved probe temperature and speed, has reduced cost again; Primary heater (1) has adopted a permanent wall temperature of elder generation to exchange the heating system of heating, the permanent hot-fluid DC heating in back, promptly control heating rate earlier automatically, behind temperature stabilization, convert DC heating again to, improved test speed, this heating system is made up of temperature controller (25), controllable silicon (24), pressure regulator (23), direct current stabilizer (37); In order to realize the accurate collection and the processing of multichannel ultra-weak electronic signal, the digital voltmeter (40) of band IEEE-488 standard interface is housed between system of subject and microcomputer, and designed a multi-path switching system (41) by microcomputer (39) control, realized the accurate transmission of data, microcomputer (39) reaches processing and the output result of calculation of stablizing laggard line data according to the duty of temperature signal decision maker when temperature.Utilize this instrument can measure the coefficient of heat conductivity or the thermal resistance of nonmetal solid material in 500K～1400K temperature range.
Description of drawings:
Figure one, double-sample protection hot plate high temperature conductometer system of subject synoptic diagram;
Figure two, temperature control system synoptic diagram;
The accurate acquisition system synoptic diagram of figure three, multichannel ultra-weak electronic signal;
Figure four, data acquisition and processing (DAP) block diagram.
Utilize the example shown in the accompanying drawing, invention be further described:
Figure one, system of subject part.Two diameters, the sample (5) that thickness is identical are contained in upper and lower two directions of primary heater (1), ring well heater (2), primary heater constant temperature plate (3), ring well heater constant temperature plate (4) symmetrically.Leave 2 mm clearance between primary heater constant temperature plate (3) and the ring well heater constant temperature plate (4), connect bridging by equally distributed three silit on circumference and be integral.The effect that upper and lower auxiliary heater (7) is set is to improve the medial temperature of test and reduce the test temperature difference, be provided with upper and lower auxiliary heater constant temperature plate (6) and play even temperature effect between upper and lower auxiliary heater (7) and sample (5), the upper and lower heat insulation layer (8) in upper and lower auxiliary heater (7) outside plays axial heat-blocking action.The upper and lower cold drawing (9) that has the labyrinth type conduit is taken away the heat that each well heater sends.Designed a tubular heater (10) in the outside of sample (5), to reduce the edge heat waste error of sample (5), tubular heater (10) is made by Elema.(17), (18), (19), (20), (21) are respectively thermometric and temp-controlling element main and auxiliary, pipe heater, adopting diameter is second-class standard platinum-platinum thermocouple of 0.3 millimeter.Thermal equilibrium between, ring well heater (1) main for measuring, (2) is provided with 16 pairs of thermoelectric piles (16) leading, encircle between well heater constant temperature plate (3), (4).Between tubular heater (10) and the sample and and shell (14) between all be filled with thermal insulation material in bulk (12), (13).
Figure two, temperature control system.The control of primary heater heating system is adopted earlier by temperature controller (25) and is exchanged heating according to the permanent wall temperature of the thermopair among the figure one (17) control controllable silicon (24), when temperature reach stable after, switch to the permanent hot-fluid heating of direct current stabilizer (37).The control of ring well heater (2) is controlled controllable silicon (27) by the thermoelectric pile (16) among the figure one by temperature controller (28), to guarantee the balance of space both sides temperature.Upper and lower auxiliary heater is controlled controllable silicon (30), (32) according to the thermopair among the figure one (18), (20) by temperature controller (31), (33) respectively, to be stabilized in the temperature value of setting.Tubular heater (10) by temperature controller (36) control controllable silicon (35), makes tubular heater be stabilized in the temperature value of a setting according to the thermopair among the figure one (21).More than the power supply of four kinds of well heaters all from AC voltage regulator (38), and before every road, connect pressure regulator (23), (26), (29), (34), adjust voltage according to different temperature ranges.
The accurate acquisition system of figure three, multichannel ultra-weak electronic signal.Various electric signal in the system of subject convert one road signal to by a multi-path switching system (41) of mainly being made up of the two-way reed relay and export to digital watch (40), digital voltmeter passes to microcomputer (39) to these faint signals exactly by standard interface, microcomputer (39) is handled data, calculate temperature and heating power, on display (42) and printer (43), show and note, microcomputer (39) is exported coefficient of heat conductivity and relevant data at last according to the block diagram work of figure four.
Claims (5)
1, a kind of double-sample protection hot plate high temperature conductometer of measuring non-metallic solid material heat-conducting coefficient or thermal resistance, by primary heater (1), ring well heater (2), auxiliary heater (7), sample (5), heat insulation layer (8), cold drawing (9), thermal insulation material (12), (13), shell (14), the system of subject that base (15) is formed, measurement and the control system formed by various temperature control instruments and element, it is characterized in that the primary heater constant temperature plate (3) that has adopted nonmetal carbonization silicon to make, ring well heater constant temperature plate (4), the tubular heater (10) that auxiliary heater constant temperature plate (6) and Elema are made; Primary heater has the heating system that a permanent wall temperature of elder generation exchanges heating, back DC heating; And an accurate collection and a disposal system by micro-processor controlled multichannel ultra-weak electronic signal arranged.
2, double-sample protection hot plate high temperature conductometer according to claim 1; it is characterized in that; the carborundum content of primary heater constant temperature plate (3), ring well heater constant temperature plate (4), auxiliary heater constant temperature plate (6) is not less than 85%, and the thickness of plate is 8～12 millimeters.
3, double-sample protection hot plate high temperature conductometer according to claim 1; it is characterized in that; leave 2 mm clearance between primary heater constant temperature plate (3), the ring well heater constant temperature plate (4), connect bridging by equally distributed three silit on circumference and be integral.
4, double-sample protection hot plate high temperature conductometer according to claim 1 is characterized in that, the primary heater heating system is combined by temperature controller (25), controllable silicon (24), pressure regulator (23), direct current stabilizer (37).
5, double-sample protection hot plate high temperature conductometer according to claim 1; it is characterized in that; the accurate collection and the disposal system of micro-processor controlled multichannel ultra-weak electronic signal are combined by multi-path switching system (41), digital voltmeter (40), microcomputer (39), display (42) and printer (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86101542.8A CN1003395B (en) | 1986-08-18 | 1986-08-18 | Hot plate high-temp. conductometer with double-sample protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86101542.8A CN1003395B (en) | 1986-08-18 | 1986-08-18 | Hot plate high-temp. conductometer with double-sample protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86101542A true CN86101542A (en) | 1988-03-02 |
| CN1003395B CN1003395B (en) | 1989-02-22 |
Family
ID=4801438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86101542.8A Expired CN1003395B (en) | 1986-08-18 | 1986-08-18 | Hot plate high-temp. conductometer with double-sample protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003395B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778476A (en) * | 2012-08-07 | 2012-11-14 | 南京理工大学 | Method for measuring heat conduction coefficient by using positive and negative bidirectional heat flow method |
| CN102778474A (en) * | 2012-08-07 | 2012-11-14 | 南京理工大学 | Method for testing thermal coefficient by using upper-lower constant temperature parameter identification method |
| CN103529076A (en) * | 2013-10-31 | 2014-01-22 | 中国科学院寒区旱区环境与工程研究所 | Automatic temperature control device for measuring heat conductivity coefficient |
| CN104155021A (en) * | 2014-07-22 | 2014-11-19 | 山东省计量科学研究院 | Standard temperature measuring board for thermal conductivity meter |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328581C (en) * | 2003-12-05 | 2007-07-25 | 鸿富锦精密工业（深圳）有限公司 | Device for measuring heat coductivity coefficient |
| CN100425979C (en) * | 2004-07-23 | 2008-10-15 | 鸿富锦精密工业（深圳）有限公司 | Measuring device and method of heat pipe performance |
-
1986
- 1986-08-18 CN CN86101542.8A patent/CN1003395B/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778476A (en) * | 2012-08-07 | 2012-11-14 | 南京理工大学 | Method for measuring heat conduction coefficient by using positive and negative bidirectional heat flow method |
| CN102778474A (en) * | 2012-08-07 | 2012-11-14 | 南京理工大学 | Method for testing thermal coefficient by using upper-lower constant temperature parameter identification method |
| CN102778476B (en) * | 2012-08-07 | 2014-07-16 | 南京理工大学 | Method for measuring heat conduction coefficient by using positive and negative bidirectional heat flow method |
| CN102778474B (en) * | 2012-08-07 | 2014-09-17 | 南京理工大学 | Method for testing thermal coefficient by using upper-lower constant temperature parameter identification method |
| CN103529076A (en) * | 2013-10-31 | 2014-01-22 | 中国科学院寒区旱区环境与工程研究所 | Automatic temperature control device for measuring heat conductivity coefficient |
| CN104155021A (en) * | 2014-07-22 | 2014-11-19 | 山东省计量科学研究院 | Standard temperature measuring board for thermal conductivity meter |
| CN104155021B (en) * | 2014-07-22 | 2016-08-17 | 山东省计量科学研究院 | A kind of thermal conductivity factor instrument standard thermometric plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1003395B (en) | 1989-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kleppa et al. | A new calorimeter for temperatures above 1400 K | |
| Stimson | Heat units and temperature scales for calorimetry | |
| Wilson | The thermal expansion of aluminium from 0 to 650 C | |
| Moore et al. | Thermal conductivity and electrical resistivity of high-purity copper from 78 to 400 K | |
| Andrews et al. | An adiabatic calorimeter for use at superambient temperatures. The heat capacity of synthetic sapphire (α-Al2O3) from 300 to 550 K | |
| CN202171579U (en) | Double test piece protection hot plate method heat conducting instrument | |
| CN86101542A (en) | Double-sample protection hot plate high temperature conductometer | |
| Bergenlid et al. | XCIV. The specific heat of graphite below 90° k | |
| Roeser | Thermoelectric thermometry | |
| CN102192922A (en) | Heat conductivity coefficient measuring device for high temperature material | |
| CN106198304A (en) | Saturated vapour pressure and temperature relation determinator | |
| JPS5682436A (en) | Differential scanning calorimeter | |
| CN107543841A (en) | The novel portable measuring instrument of flow thermal conductivity coefficient in a kind of measuring cell | |
| CN204228639U (en) | A kind of high temperature protection hot plate conductometer | |
| Stretz et al. | The high temperature heat content of liquid yttrium by levitation calorimetry | |
| CN207964116U (en) | A kind of photoelectric temperature sensor | |
| Flynn | A radial-flow apparatus for determining the thermal conductivity of loose-fill insulations to high temperatures | |
| CN201055778Y (en) | Digital display temperature control electric sand bath | |
| STIMSON | 9. PRECISION RESISTANCE | |
| CN201535760U (en) | Measuring apparatus for thermal equivalent of work | |
| CN201062995Y (en) | Device for measuring continuously temperature of hyperthermia cuprum liquid | |
| Stroud | Experimental verification of an analytical determination of overall thermal conductivity of honeycomb-core panels | |
| Arita et al. | Development of high temperature calorimeter: heat capacity measurement by direct heating pulse calorimetry | |
| Wicaksana et al. | Design and Manufacture Electrolysis Equipment to Produce Magnesium Oxide Material | |
| SU1073665A1 (en) | Device for measuring electroconductive material thermal conductivity and electrical conductivity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |