CN201107285Y - Experiment furnace of water flow flat-plate method heat conductivity coefficient tester - Google Patents
Experiment furnace of water flow flat-plate method heat conductivity coefficient tester Download PDFInfo
- Publication number
- CN201107285Y CN201107285Y CNU2007200926104U CN200720092610U CN201107285Y CN 201107285 Y CN201107285 Y CN 201107285Y CN U2007200926104 U CNU2007200926104 U CN U2007200926104U CN 200720092610 U CN200720092610 U CN 200720092610U CN 201107285 Y CN201107285 Y CN 201107285Y
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- heating element
- heat conductivity
- molybdenum disilicide
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- furnace
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Abstract
The utility model discloses a test furnace of a thermal coefficient tester used for testing the thermal coefficients of fire proof material and heat insulating material with a water discharge flat band method. The test furnace comprises an upper furnace body (1), a lower furnace body (3), a soaking plate (4) and a heating element (2), wherein, a hearth is arranged on the upper furnace body (1), the heating element is a molybdenum disilicide heating body, and a hang system thereof is installed inside the hearth; the hearth is of an upright barrel-shaped inner cavity structure, the depth of the inner cavity is larger than the length of the heating section of the heating element. In the utility model, a molybdenum disilicide rod is used as the heating element, the highest usage temperature reaches over 1700 DEG C, and the molybdenum disilicide rod has the characteristics of quick elevation of temperature, strong inhibiting ability, stable resistance property, good heat shock resistance property, etc., and can work stably at 1600 DEG C for a long time, thereby prolonging the work time and the service life of the test furnace of the thermal coefficient tester in high temperature, improving the testing accuracy of the thermal coefficient of a sample, and lowering the test cost.
Description
Technical field
The utility model relates to the trial furnace of fire resistive material, heat preserving and insulating material coefficient of heat conductivity testing tool, particularly a kind of trial furnace of discharge flat band method coefficient of heat conductivity tester relates generally to used heating element of this trial furnace (or claiming heater) and chamber structure.
Background technology
Ultimate principle according to the dull and stereotyped steady heat conduction process of Fourier one dimension, during the hot-fluid stable state, unit interval flow to the coefficient of heat conductivity λ, sample hot side of the heat Q of huyashi-chuuka (cold chinese-style noodles) and sample from sample hot side one dimension (vertically) and is directly proportional with temperature difference T between huyashi-chuuka (cold chinese-style noodles), by mensuration flow through discharge M and water temperature rising Δ t in the calorimeter of center, obtain the heat Q of the water absorption of unit interval unit mass, try to achieve the coefficient of heat conductivity λ of sample.
The burner hearth of the testing equipment heating chamber (being trial furnace) of regulation is flat spill in the American National Standard " ASTM C 201-1993 (2004) fire resistive material coefficient of heat conductivity test method ", electrical heating elements is an Elema, horizontal direction is installed in the burner hearth of stove upper body, and the position of soaking plate is installed in the below of this burner hearth corresponding to the stove lower body.The trial furnace of the discharge flat band method coefficient of heat conductivity tester shown in " People's Republic of China's iron and steel industry industry standard YB/T 4130-2005 fire resistive material coefficient of heat conductivity test method (discharge flat band method) " of the issue on April 1st, 2005 of China National Development and Reform Commission is flat spill, electrical heating elements is an Elema, horizontal direction is installed in the burner hearth of stove upper body, and soaking plate is installed on the stove lower body.
Horizontal direction is installed in the Globar heating element in the burner hearth of stove upper body, and theoretical serviceability temperature scope is 600～1600 ℃, when surface temperature is below 1250 ℃ the time, has good chemical stability, and using 2000 hours ageing rates continuously is 50%; Surface temperature is 1500 ℃, uses continuously that ageing rate reached 100% when ageing rate reached 50%, 2000 hour in 500 hours.Therefore aging easily, the fracture of Globar heating element, serviceable life is low, and because changes in resistance causes temperature uniformity to descend, causes the fluctuation distortion of test result.Because of disconnected rod, change reasons such as rod, aging, coupling, this tester normal working temperature general provision is not more than 1250 ℃, exceed this temperature and use and will lose its serviceable life, lowering apparatus stability, the coefficient of heat conductivity testing cost increases, the cycle lengthening.
Summary of the invention
The purpose of this utility model provides the trial furnace of a kind of long service life, discharge flat band method coefficient of heat conductivity tester that working temperature is high.
The purpose of this utility model can adopt following technical scheme to realize: it comprises stove upper body, stove lower body, soaking plate, heating element, burner hearth is arranged on the stove upper body, heating element adopts the serviceability temperature scope to be higher than 1700 ℃, and the long-term work temperature is at 1600 ℃ heater, heating element is the molybdenum disilicide heater, it is hung and is installed in the burner hearth, and the structure of burner hearth is upright tubular inner chamber, and the inner chamber degree of depth is greater than the length of heating element heating section.
Described heating element be " U " type or " W " the molybdenum disilicide heater of type.
The utility model adopts the molybdenum disilicide rod as heating element, maximum operation (service) temperature can reach more than 1700 ℃, and have that programming rate is fast, oxidation resistance is strong, resistance characteristic is stable and characteristics such as thermal shock resistance is good, can be at 1600 ℃ of long-time steady operations, thereby coefficient of heat conductivity tester trial furnace is prolonged working time and the serviceable life when high temperature, the test accuracy rate of sample coefficient of heat conductivity improves, and testing cost reduces.
Description of drawings
Accompanying drawing 1 is a local longitudinal profile structural representation of the present utility model.
Accompanying drawing 2 is the vertical view of Fig. 1.
Among the figure: 1, stove upper body, 2, molybdenum silicide heating elements, 3, the stove lower body, 4, soaking plate, 5, institute's test specimens, 6 temperature-control heat couple.
Embodiment
In conjunction with the accompanying drawings, specific embodiment of the utility model is described.
As shown in Figure 1: the trial furnace of described discharge flat band method coefficient of heat conductivity tester comprises stove upper body 1, stove lower body 3, soaking plate 4, and burner hearth is arranged in the stove upper body 1, and temperature-control heat couple 6 is set in burner hearth.Heating element 2 adopts the serviceability temperature scope to be higher than 1700 ℃, and the long-term work temperature is at 1600 ℃ heater.This heater element can be " U " type or " W " the molybdenum disilicide heater of type, present embodiment adopts the molybdenum disilicide heater that is shaped as " U " type structure, it is hung in the burner hearth that is installed in stove upper body 1, the structure of burner hearth is upright tubular inner chamber, and the inner chamber degree of depth is greater than the length of heating element heating section.
As shown in Figure 2: between the molybdenum disilicide heater of described " U " type structure for being connected in series.
During use, institute's test specimens 5 is placed in the burner hearth of soaking plate 4 bottoms and can carries out testing experiment.
Claims (3)
1, a kind of trial furnace of discharge flat band method coefficient of heat conductivity tester, it comprises stove upper body (1), stove lower body (3), soaking plate (4), heating element, burner hearth is arranged on stove upper body (1), it is characterized in that: heating element is the molybdenum disilicide heater, and it is hung and is installed in the burner hearth; Burner hearth is upright tubular inner-cavity structure, and the inner chamber degree of depth is greater than the length of heating element heating section.
2, the trial furnace of a kind of discharge flat band method coefficient of heat conductivity tester according to claim 1 is characterized in that: heating element is the molybdenum disilicide heater of " U " type structure.
3, the trial furnace of a kind of discharge flat band method coefficient of heat conductivity tester according to claim 1 is characterized in that: heating element is the molybdenum disilicide heater of " W " type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200926104U CN201107285Y (en) | 2007-11-06 | 2007-11-06 | Experiment furnace of water flow flat-plate method heat conductivity coefficient tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200926104U CN201107285Y (en) | 2007-11-06 | 2007-11-06 | Experiment furnace of water flow flat-plate method heat conductivity coefficient tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201107285Y true CN201107285Y (en) | 2008-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200926104U Expired - Lifetime CN201107285Y (en) | 2007-11-06 | 2007-11-06 | Experiment furnace of water flow flat-plate method heat conductivity coefficient tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201107285Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192922A (en) * | 2010-03-17 | 2011-09-21 | 天津中科惠氏精密仪器制造有限公司 | Heat conductivity coefficient measuring device for high temperature material |
| CN101493432B (en) * | 2009-03-10 | 2012-07-18 | 中国计量科学研究院 | Method for measuring thermal conductivity coefficient of solid material |
| CN102879423A (en) * | 2012-10-09 | 2013-01-16 | 北京航空航天大学 | Single-side high-temperature testing device of hypersonic aircraft material in 1800-degree aerobic environment |
| CN105067657A (en) * | 2015-08-27 | 2015-11-18 | 马鞍山钢铁股份有限公司 | Iron ore sintering high-temperature characteristic detection device and detection method thereof |
| CN107860228A (en) * | 2017-10-25 | 2018-03-30 | 通达耐火技术股份有限公司 | A kind of refractory material heat conduction detection trial furnace and its detection method |
-
2007
- 2007-11-06 CN CNU2007200926104U patent/CN201107285Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493432B (en) * | 2009-03-10 | 2012-07-18 | 中国计量科学研究院 | Method for measuring thermal conductivity coefficient of solid material |
| CN102192922A (en) * | 2010-03-17 | 2011-09-21 | 天津中科惠氏精密仪器制造有限公司 | Heat conductivity coefficient measuring device for high temperature material |
| CN102879423A (en) * | 2012-10-09 | 2013-01-16 | 北京航空航天大学 | Single-side high-temperature testing device of hypersonic aircraft material in 1800-degree aerobic environment |
| CN102879423B (en) * | 2012-10-09 | 2015-01-21 | 北京航空航天大学 | Single-side high-temperature testing device of hypersonic aircraft material in 1800-degree aerobic environment |
| CN105067657A (en) * | 2015-08-27 | 2015-11-18 | 马鞍山钢铁股份有限公司 | Iron ore sintering high-temperature characteristic detection device and detection method thereof |
| CN107860228A (en) * | 2017-10-25 | 2018-03-30 | 通达耐火技术股份有限公司 | A kind of refractory material heat conduction detection trial furnace and its detection method |
| CN107860228B (en) * | 2017-10-25 | 2023-10-20 | 北京金隅通达耐火技术有限公司 | Refractory material heat conduction detection test furnace and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080827 |