CN202171579U - Double test piece protection hot plate method heat conducting instrument - Google Patents
Double test piece protection hot plate method heat conducting instrument Download PDFInfo
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- CN202171579U CN202171579U CN2011201601549U CN201120160154U CN202171579U CN 202171579 U CN202171579 U CN 202171579U CN 2011201601549 U CN2011201601549 U CN 2011201601549U CN 201120160154 U CN201120160154 U CN 201120160154U CN 202171579 U CN202171579 U CN 202171579U
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Abstract
The utility model discloses a double test piece protection hot plate method heat conducting instrument, which comprises a first cold plate, a second cold plate, a hot plate arranged between the first cold plate and the second cold plate, and a clamping mechanism. The hot plate comprises a metering panel, a heat insulation plate is arranged between the hot plate and the second cold plate, and a heat flow meter provided with a metering core plate is arranged between the heat insulation plate and the hot plate. The heat flow meter and the heat insulation plate are arranged in the traditional double test piece protection hot plate device, so that the double test piece protection hot plate method heat conducting instrument can test a single test piece, has a simple structure, and is convenient in operation.
Description
Technical field
The utility model is related to a kind of thermal conductivity measuring apparatus, and the double test piece protection hot plate method heat conducting instrument of single test specimen can be tested more particularly, to a kind of.
Background technology
Thermal conductivity factor is one of insulation material thermophysical property, is the important indicator for differentiating material heat-insulating property quality, and in recent years, country increasingly payes attention to building energy conservation.And accurately measure insulation material thermal conductivity factor and key effect is played to the Energy in use of proper use of building thermal insulation material and saving building.Therefore, the Accurate Determining parameter is particularly important.
At present, the method for testing of thermal conductivity factor is generally divided into two kinds：Steady state method and cold store enclosure.Because steady state method can be using accounting equation simple and reliable enough, for the simple object of geometry, thermal conductivity factor expression formula can usually be represented with explicit function, thus obtain a very wide range of application as classical way.
In the various devices of one-dimensional stable method heat conducting coefficient measuring, most commonly protective heat plate device, the device is tested using China standard GB/T10294-2008 " insulation hot material steady state heat resistance and measure-Guarded hot plate about characteristic ".At present, mainly there are single test specimen protective heat plate device and double-test-piece protective heat plate device, the temperature-controlled portion of single test specimen protective heat plate device is made up of heating unit, cooling unit and back of the body protective unit three part, double-test-piece protective heat plate device is made up of heating unit, cooling unit two parts, therefore, for temprature control unit, double-test-piece protective heat plate device is fairly simple, using more popularizing.
Double-test-piece protective heat plate principle of device：Under steady state conditions, a reactor, in the central metering region of protective heat plate device, in the uniform plate test coupon with parallel surfaces, one-dimensional Uniform Heat density present in the Infinite Plate being similar to using two uniform flat boards of parallel temperature as boundary is set up.
Two test specimen thermal conductivity factor calculating formulas can be represented by the formula：
In formulaλ- test specimen thermal conductivity factor, W/ (m.K)；
d- specimen thickness, m；
T 1 The temperature that metering plate face corresponding to-test specimen is measured, K；
T 2 The temperature that cold drawing face corresponding to-test specimen is measured, K；
q- metering plate heat flow density or heat flow rate per unit area, W/m2；
Q- metering heater power, W；
A- metering area, m2。
When two test specimens are differed, and particularly their thermal conductivity factor, thickness are different, double-test-piece protective heat plate device is not suitable for determining；When test specimen only one of which, double-test-piece protective heat plate device will be unable to determine.
Utility model content
The utility model can test the double test piece protection hot plate method heat conducting instrument of single test specimen there is provided a kind of in view of the shortcomings of the prior art.
To achieve the above object, the utility model can take following technical proposals：Including the first cold drawing, the second cold drawing, the hot plate and clamp system that are arranged between the first cold drawing and the second cold drawing, the hot plate includes gauge panel, it is characterised in that：A heat-insulating shield is provided between described hot plate and the second cold drawing, a heat-flow meter with metering core plate is provided between heat-insulating shield and described hot plate.
Another aspect of the present utility model, it is characterised in that：The area of the metering core plate of the heat-flow meter is identical with the area of the gauge panel of the hot plate.
Another aspect of the present utility model, described hot-fluid is calculated as the platy structure that copper is made with constantan.
Another aspect of the present utility model, the thickness of the heat-flow meter is 0.5mm.
The beneficial effects of the utility model are：The utility model centers heat-flow meter and heat insulating thermal preserving board in double-test-piece protective heat plate dress, double-test-piece protective heat plate conductometer is tested single test specimen, simple in construction, easy to operate.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
The utility model double test piece protection hot plate method heat conducting instrument, including the first cold drawing 1, the second cold drawing 2, the hot plate 3 and clamp system that are arranged between the first cold drawing 1, the second cold drawing 2.It is screw rod clamping device that clamp system, which is arranged at the clamp system used in the outside of two blocks of cold drawings, the present embodiment,.Hot plate 3 includes metering heater 33, protection heater 34, the protection face board 31 for being installed on the gauge panel 32 of metering heater 33 both sides, being installed on protection heater 34 both sides.A homogeneous tabular heat-insulating shield 7 is provided between the cold drawing 2 of hot plate 3 and second, a heat-flow meter 8 is provided between the heat-insulating shield 7 and hot plate 3.The heat-flow meter should be that test result can reach the required heat-flow meter of JG/T 3016-94 " heat-flow meter for building " regulations, use in the present embodiment thickness for 0.5mm copper and constantan alloy material tabular heat-flow meter.Heat-flow meter 8 includes metering core plate 81 and heat-flow meter protection ring 82, the area of the area of the metering core plate 81 and the gauge panel 32 of hot plate 3AIt is identical.
Before test, the thickness of test specimen 9 is first measuredd.During test, with screw rod gripping means grips heat-insulating shield 7 and heat-flow meter 8 and test specimen 9, switch on power, heater 33 starts to heat the gauge panel 32 of hot plate 3, protection heater 34 starts to heat protection face board 31, first cold drawing 1 is cooled down or heated by Water Tank with Temp.-controlled with the second cold drawing 2, and also available electron refrigeration is controlled to cold plate temperature certainly.When the temperature of gauge panel 32T 1 Stablize in design temperature, and cold plate temperatureT 2 Stabilization is after design temperature, recordT 1 WithT 2 And the power used by metering heaterQWith the heat flow density of heat-flow meter 8F, whenFIts absolute value is then taken during for negative value, stops test.According to formula, calculate the heat flow rate per unit area of gauge panel 32q。
Two p-wires of heat-flow meter 8 guide to outside, and the thermoelectrical potential of heat-flow meter 8 is measured during testE, according to formulaF=E·C, whereinCFor the hot-fluid gauge head coefficient of heat-flow meter, orF=E/S, whereinSFor the heat sensitivity of heat-flow meter, the heat flow density of heat-flow meter 8 is calculatedF。
For existing double-test-piece protective heat plate conductometer, a heat flux measurement instrument can also be fixedly mounted on conductometer for convenience, heat flow rate per unit area is directly displayed outF。
The thermal conductivity factor of last test specimen 9λIt can be calculated according to following formula：
In formulaλ- test specimen thermal conductivity factor, W/ (m.K)；
d- specimen thickness, m；
T 1 The temperature that metering plate face corresponding to-test specimen is measured, K；
T 2 The temperature that cold drawing face corresponding to-test specimen is measured, K；
qMetering plate face heat flow density or heat flow rate per unit area corresponding to-test specimen, W/m2；
Q- metering heater power, W；
F - heat-flow meter heat flow density, its absolute value, W/m are then taken when for negative value2；
A- metering area, m2。
The device is compared with traditional double-test-piece protective heat plate device, due to being provided with heat-flow meter and heat insulating thermal preserving board, double-test-piece protective heat plate conductometer is tested single test specimen, thermal conductivity factor can be just calculated without requiring that two test specimens are identical as traditional device.The apparatus structure is simple and convenient to operate.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, without departing from the concept of the premise utility; some improvements and modifications can also be made, these improvements and modifications also should be regarded as in protection domain of the present utility model.
Claims (4)
1. a kind of double test piece protection hot plate method heat conducting instrument, including the first cold drawing, the second cold drawing, the hot plate and clamp system that are arranged between the first cold drawing and the second cold drawing, the hot plate includes gauge panel, it is characterised in that：A heat-insulating shield is provided between described hot plate and the second cold drawing, a heat-flow meter with metering core plate is provided between heat-insulating shield and described hot plate.
2. conductometer according to claim 1, it is characterised in that：The area of the metering core plate of the heat-flow meter is identical with the area of the gauge panel of the hot plate.
3. conductometer according to claim 2, it is characterised in that：The hot-fluid is calculated as the platy structure that copper is made with constantan.
4. conductometer according to claim 3, it is characterised in that：The thickness of the heat-flow meter is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201601549U CN202171579U (en) | 2011-05-19 | 2011-05-19 | Double test piece protection hot plate method heat conducting instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201601549U CN202171579U (en) | 2011-05-19 | 2011-05-19 | Double test piece protection hot plate method heat conducting instrument |
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| CN202171579U true CN202171579U (en) | 2012-03-21 |
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| CN2011201601549U Expired - Fee Related CN202171579U (en) | 2011-05-19 | 2011-05-19 | Double test piece protection hot plate method heat conducting instrument |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879424A (en) * | 2012-10-10 | 2013-01-16 | 信阳天意节能技术有限公司 | Measurement method for thermal performance of phase change building heat-insulation material |
| CN103196949A (en) * | 2013-04-26 | 2013-07-10 | 上海市计量测试技术研究院 | Heat resistance heat flow meter calibration method and implementation device thereof |
| CN103454306A (en) * | 2013-09-06 | 2013-12-18 | 苏州市计量测试研究所 | Detection and measurement method for heat conduction coefficient tester |
| CN104267060A (en) * | 2014-09-25 | 2015-01-07 | 上海依阳实业有限公司 | Method for measuring heat conductivity of active heat-protection type calorimeter by virtue of quasi-steady-state method and correction method of active heat-protection type calorimeter |
| CN108088869A (en) * | 2017-11-30 | 2018-05-29 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of thermal protection system Heat-Insulation Test device |
| CN109490355A (en) * | 2017-09-13 | 2019-03-19 | 大唐移动通信设备有限公司 | A kind of method of test device of thermal conductivity coefficient and heat conducting coefficient measuring |
| CN110927209A (en) * | 2019-12-03 | 2020-03-27 | 南京玻璃纤维研究设计院有限公司 | Device and method for measuring effective heat conductivity coefficient of vacuum insulation panel by using protective heat plate method |
| CN111579581A (en) * | 2020-04-30 | 2020-08-25 | 国联汽车动力电池研究院有限责任公司 | Method and device for measuring heat conductivity coefficient of lithium ion battery cell |
-
2011
- 2011-05-19 CN CN2011201601549U patent/CN202171579U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879424A (en) * | 2012-10-10 | 2013-01-16 | 信阳天意节能技术有限公司 | Measurement method for thermal performance of phase change building heat-insulation material |
| CN102879424B (en) * | 2012-10-10 | 2015-01-14 | 信阳天意节能技术有限公司 | Measurement method for thermal performance of phase change building heat-insulation material |
| CN103196949A (en) * | 2013-04-26 | 2013-07-10 | 上海市计量测试技术研究院 | Heat resistance heat flow meter calibration method and implementation device thereof |
| CN103454306A (en) * | 2013-09-06 | 2013-12-18 | 苏州市计量测试研究所 | Detection and measurement method for heat conduction coefficient tester |
| CN103454306B (en) * | 2013-09-06 | 2016-06-22 | 苏州市计量测试研究所 | A kind of detection measuring method of heat conduction coefficient tester |
| CN104267060A (en) * | 2014-09-25 | 2015-01-07 | 上海依阳实业有限公司 | Method for measuring heat conductivity of active heat-protection type calorimeter by virtue of quasi-steady-state method and correction method of active heat-protection type calorimeter |
| CN109490355A (en) * | 2017-09-13 | 2019-03-19 | 大唐移动通信设备有限公司 | A kind of method of test device of thermal conductivity coefficient and heat conducting coefficient measuring |
| CN108088869A (en) * | 2017-11-30 | 2018-05-29 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of thermal protection system Heat-Insulation Test device |
| CN110927209A (en) * | 2019-12-03 | 2020-03-27 | 南京玻璃纤维研究设计院有限公司 | Device and method for measuring effective heat conductivity coefficient of vacuum insulation panel by using protective heat plate method |
| CN111579581A (en) * | 2020-04-30 | 2020-08-25 | 国联汽车动力电池研究院有限责任公司 | Method and device for measuring heat conductivity coefficient of lithium ion battery cell |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20140519 |