CN2385334Y - Testing device for measuring thermal conductivity of inorganic nonmetallic material - Google Patents
Testing device for measuring thermal conductivity of inorganic nonmetallic material Download PDFInfo
- Publication number
- CN2385334Y CN2385334Y CN 99214843 CN99214843U CN2385334Y CN 2385334 Y CN2385334 Y CN 2385334Y CN 99214843 CN99214843 CN 99214843 CN 99214843 U CN99214843 U CN 99214843U CN 2385334 Y CN2385334 Y CN 2385334Y
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- thermal conductivity
- sample
- thermopair
- hot line
- line frame
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Abstract
The utility model discloses a testing device for measuring thermal conductivity of electric conduction refractory material with carbon. The utility model adopts a sagger for burying carbon and an insulating sleeve pipe for protecting a thermal wire frame and a thermocouple. The utility model solves the problem that refractory material with carbon is oxygenized and conducts electricity. The utility model utilizes the principle of a parallel thermal wire method and can accurately measure the thermal conductivity of electric conduction refractory material with carbon.
Description
The utility model relates to a kind of Inorganic Non-metallic Materials thermal conductivity proving installation.Particularly contain charcoal, conduction refractory thermal conductivity proving installation.
Usually, the Inorganic Non-metallic Materials Determination of Thermal Conductivity can be carried out according to standard ISO 8894-2.This standard to describe the method for the parallel heat-pole method of a kind of usefulness test thermal conductivity, i.e. parallel insertion linear conductor (hot line frame) and thermopair between two samples, hot line is carried out spot heating, raise to determine thermal conductivity by the temperature of measuring from hot line frame a distance.The test of carbon containing refractory thermal conductivity can not be adopted this standard, is because containing carbon product nearly all conducts electricity on the one hand, as adopts this method, conducts electricity between hot line frame and the sample, can't collect the accurate signal of test; The easy oxidation of contenting carbon material at high temperature on the other hand; if sample is not protected; at high temperature can cause charcoal in the sample and the oxygen generation chemical reaction in the atmosphere; but when sample is placed reducing atmosphere; because of hot line frame and thermopair are to be made of platinum or platinum rhodium; platinum or platinum rhodium all can become fragile even vapor away in reducing atmosphere in short time, have a strong impact on normally carrying out of test.
The purpose of this utility model provides a kind ofly can accurately test the Inorganic Non-metallic Materials thermal conductivity, especially contains the device of charcoal, conduction refractory thermal conductivity.
For achieving the above object, the technical solution of the utility model is on the basis of adopting parallel heat-pole method principle, and sample is put into the saggar that can insert trial furnace, filling 10-20mm powdered carbon on every side; Entangle with industrial alumina insulation tubule, its shape and interior external diameter will mate with hot line frame and thermopair, do not touch sample to guarantee hot line frame and thermopair.
Insulating sleeve can be aluminium oxide, magnesia.
Insulation tubule external diameter is 0.8-1.5mm, internal diameter 0.3-0.6mm.
The utility model adopts the insulation of aluminium oxide tubule not only to avoid platinum and platinum rhodium hot line frame, thermopair and charcoal to react, and has solved the conduction problem of material simultaneously.Sample is put into saggar and is filled powdered carbon, has solved the not oxidized problem of the charcoal in the sample, has guaranteed the accurate of test result.Hot line frame and thermopair adopt the insulation of oxygen aluminium tubule avoided use ISO 8894-2 method testing conductive, when containing the charcoal thermal conductivity, the conduction of hot line frame and thermopair and sample, the limitation that causes distorted signals not test.
Be described in further detail below in conjunction with the embodiment of accompanying drawing utility model.
Fig. 1 is the utility model structural representation.
1-temperature measuring device among the figure, 2-tested sample, 3-saggar, 4-powdered carbon, 5-thermopair, 6-insulating sleeve, 7-hot line frame.
Embodiment 1:
In order to protect the carbon containing refractory in the body of heater atmosphere not oxidized; sample is put into a saggar, and saggar adopts the stainless steel of 3 millimeters thick to make, and the saggar size is for can insert in the trial furnace; and behind the sample of packing into, can around sample, fill the 10-20mm powdered carbon and be advisable.Filling powdered carbon around sample places in the saggar; Hot line frame and thermopair entangle with industrial alumina insulation tubule (external diameter 1.0mm, internal diameter 0.5mm).Test result such as table 1.
Table 1 carbon containing refractory thermal conductivity proving installation test result
| Material | The test value of thermal conductivity [w/ (m.k)] | ||||
| 25 ℃ of normal temperature | 200℃ | 400℃ | 800℃ | 1000℃ | |
| Brick fuel | 9.6 | 8.5 | 8.2 | 6.8 | 7.8 |
Embodiment 2:
With hot-wire measurement frame and thermopair with the magnesium oxide tubule that insulate, this tubule external diameter 1.0mm, internal diameter 0.5mm insulation is to the test of conductive material thermal conductivity.Test result such as table 2.
Table 2 contains charcoal conduction refractory thermal conductivity proving installation test result
| Material | The test value of thermal conductivity [w/ (m.k)] | |||
| 200℃ | 400℃ | 800℃ | 1000℃ | |
| The aluminium silicon carbide brick fuel | 5.1 | 4.5 | 3.9 | 3.4 |
Claims (3)
1. an Inorganic Non-metallic Materials thermal conductivity proving installation is made up of hot line frame, thermopair and test instrumentation, it is characterized in that: sample is put into a saggar, filling powdered carbon on every side, the saggar size can be inserted in the trial furnace, and behind the sample of packing into, can fill the 10-20mm powdered carbon around sample; Hot line frame and thermopair entangle with industrial alumina insulation tubule, and its shape and interior external diameter will mate with hot line frame and thermopair.
2. Inorganic Non-metallic Materials thermal conductivity proving installation as claimed in claim 1 is characterized in that: described insulating sleeve can be that aluminium oxide, magnesium oxide material are made.
3. Inorganic Non-metallic Materials thermal conductivity proving installation as claimed in claim 1 is characterized in that: the external diameter 0.8-1.5mm of described insulation tubule, internal diameter 0.3-0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99214843 CN2385334Y (en) | 1999-07-06 | 1999-07-06 | Testing device for measuring thermal conductivity of inorganic nonmetallic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99214843 CN2385334Y (en) | 1999-07-06 | 1999-07-06 | Testing device for measuring thermal conductivity of inorganic nonmetallic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2385334Y true CN2385334Y (en) | 2000-06-28 |
Family
ID=34006946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99214843 Expired - Fee Related CN2385334Y (en) | 1999-07-06 | 1999-07-06 | Testing device for measuring thermal conductivity of inorganic nonmetallic material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2385334Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470088B (en) * | 2007-12-28 | 2011-04-20 | 中国航天科技集团公司第五研究院第五一〇研究所 | Test method for low-temperature thermal conductivity of fluid |
| CN102621183A (en) * | 2012-04-13 | 2012-08-01 | 安徽工业大学 | Judgment method for degree of maturity of coke |
-
1999
- 1999-07-06 CN CN 99214843 patent/CN2385334Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470088B (en) * | 2007-12-28 | 2011-04-20 | 中国航天科技集团公司第五研究院第五一〇研究所 | Test method for low-temperature thermal conductivity of fluid |
| CN102621183A (en) * | 2012-04-13 | 2012-08-01 | 安徽工业大学 | Judgment method for degree of maturity of coke |
| CN102621183B (en) * | 2012-04-13 | 2013-11-06 | 安徽工业大学 | Judgment method for degree of maturity of coke |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |