CN108828004A - The synthesis thermal conductivity measurement method of complex heat transfer path product - Google Patents
The synthesis thermal conductivity measurement method of complex heat transfer path product Download PDFInfo
- Publication number
- CN108828004A CN108828004A CN201810623836.5A CN201810623836A CN108828004A CN 108828004 A CN108828004 A CN 108828004A CN 201810623836 A CN201810623836 A CN 201810623836A CN 108828004 A CN108828004 A CN 108828004A
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- Prior art keywords
- product
- temperature
- heater
- transfer path
- multilayer insulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Abstract
The present invention provides a kind of synthesis thermal conductivity measurement methods of complex heat transfer path product, include the following steps：In the surface mount heater of the sites of heat generation of the product of heat-transfer path complexity, and away from stickup temperature transducer at heater edge 5mm；Multilayer insulation component is coated in the remaining surface in addition to product mounting surface；Heater and temperature transducer are pasted in multilayer insulation assembly surface, so that heater covers multilayer insulation assembly surface to greatest extent；Product is mounted on aluminium sheet, surface of aluminum plate sprays the thermal control coating that size determines, remaining surface coats multilayer insulation component；The assembly of product and aluminium sheet is put into vacuum tank, space environment is established, product is heated, and record product temperature and mounting surface temperature；Comprehensive thermal coefficient is calculated according to Fourier's law.The present invention can accurately measure the thermal coefficient of complex heat transfer path product, and more accurate parameter can be provided for spacecraft thermal control design, improve thermal control design precision.
Description
Technical field
The present invention provides a kind of synthesis thermal conductivity measurement methods of complex heat transfer path product, can be spacecraft thermal control
Design provides more accurate parameter, can be applied to the measurement of the thermal coefficient between the product and mounting plate of configuration complexity.
Background technique
With the complication of satellite function and the lightweight of weight, the configuration of single machine is increasingly sophisticated, and frequently by branch
Frame is mounted in structure housing, and the shape of bracket is equally sufficiently complex.Due to complicated configuration and uncertain thermal contact conductance system
Number, keeps the heat-transfer path of product extremely complex, so that the thermal coefficient of product to its mounting surface is difficult to determine, reduces thermal design
Precision, improve the risk of heat control system.
By the way of at present to the comprehensive thermal coefficient of complex heat transfer path product using emulation and estimation, due to configuration complexity,
Thermal contact conductance is difficult to determine, the thermal coefficient error that two ways obtains is larger.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of synthesis thermal conductivity measurements of complex heat transfer path product
Method can accurately measure the synthesis thermal coefficient of complex heat transfer path product, improve thermal design precision.
To achieve the above object, the present invention is realized especially by following technical scheme：
A kind of synthesis thermal conductivity measurement method of complex heat transfer path product, includes the following steps：
Step 1: the surface mount heater of the sites of heat generation in the product of heat-transfer path complexity, and away from heater
Temperature transducer is pasted at edge 5mm；
Step 2: coating multilayer insulation component in the remaining surface in addition to product mounting surface, wherein that pastes on product adds
Hot device and temperature transducer are covered below multilayer insulation component；
Step 3: heater and temperature transducer are pasted in multilayer insulation assembly surface, so that heater is maximum
Cover multilayer insulation assembly surface；
Step 4: product is mounted on aluminium sheet, surface of aluminum plate sprays the thermal control coating that size determines, remaining surface cladding
Multilayer insulation component；Specifically, one piece of thickness of production is greater than the aluminium sheet of 5mm, product is mounted on aluminium sheet, in the aluminium sheet other side
SR107 white paint is sprayed, aluminium sheet remaining surface coats multilayer insulation component.
Step 5: the assembly of product and aluminium sheet is put into vacuum tank, space environment is established, product is heated, and remembers
Record product temperature and mounting surface temperature；Specifically,
The assembly of product and aluminium sheet is put into vacuum tank, the in-orbit space environment of satellite is established, is opened on product
Heater, while the heater of multilayer insulation assembly surface is adjusted, reduce the leakage heat of multilayer insulation component, to product temperature and aluminium
After plate white paint surface temperature balance, record heating power, product temperature and white paint surface temperature.
Step 6: calculating the thermal coefficient of product according to Fourier formula K=Q/ (T1-T2), wherein Q is heater
Power；T1 is product temperature, is measured by temperature sensor；T2 is white paint temperature, is measured by temperature sensor；K is product to peace
The synthesis thermal coefficient in dress face.
The invention has the advantages that：
The thermal coefficient that complex heat transfer path product can accurately be measured, relative to the thermal coefficient of theoretical calculation, energy
More accurate parameter is provided for spacecraft thermal control design, improves thermal control design precision
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Purpose will become more apparent upon：
Fig. 1 is a concrete application example of the comprehensive thermal conductivity measurement method of complex heat transfer of embodiment of the present invention path product
Schematic diagram.
Fig. 2 is the arrangement schematic diagram of temperature sensor on aluminium sheet in the embodiment of the present invention.
Fig. 3 is the arrangement schematic diagram of temperature sensor, white paint on aluminium sheet in the embodiment of the present invention.
In figure, 1- product, 2- is pasted onto the heater on product, and 3- is pasted onto the temperature sensor on product, 4- multilayer
Insulating assembly, 5- are pasted onto the heater on multilayer insulation component, and 6- is pasted onto the temperature sensor on multilayer insulation component, 7-
It is pasted onto the temperature sensor in white paint region, 8- white paint, 9- aluminium sheet.
Wherein.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
As shown in Figure 1, Figure 2, Figure 3 shows, the embodiment of the invention provides a kind of comprehensive thermal coefficients of complex heat transfer path product
Measurement method includes the following steps：
Step 1: the product surface in heat-transfer path complexity pastes heater and temperature transducer；
Heater 2 is pasted in the position that product 1 generates heat, and away from stickup temperature transducer 3 at heater edge 5mm.
Step 2, the remaining surface in addition to product mounting surface coat multilayer insulation component；
In addition to product mounting surface, remaining product surface coats multilayer insulation component 4, the heater and thermometric pasted on product
Sensor is covered below multilayer insulation component.
Step 3, multilayer insulation assembly surface paste heater and temperature transducer；
Heater 5 is pasted in multilayer insulation assembly surface and temperature transducer 6, heater cover multilayer table to greatest extent
The main function of face, the heater and temperature sensor is the leakage heat of compensation multi-layered insulating assembly.
Product is mounted on aluminium sheet by step 4, and surface of aluminum plate sprays the thermal control coating that size determines, remaining surface cladding
Multilayer insulation component；
One block of aluminium sheet 9 is made, thickness is greater than 5mm, product 1 is mounted on aluminium sheet, and spraying SR107 is white in the aluminium sheet other side
Paint 8, aluminium sheet remaining surface coat multilayer insulation component 4.
The assembly of product and aluminium sheet is put into vacuum tank, establishes space environment by step 5, heats to product, and remember
Record product temperature and mounting surface temperature；
Product is put into vacuum tank, the in-orbit space environment of satellite is established, the heater 2 opened on product is adjusted simultaneously
Multiple-level surface heater 5 reduces the leakage heat of multilayer, after product temperature 3 and aluminium sheet white paint surface temperature 7 balance, record heating function
Rate, product temperature, white paint surface temperature.
Step 6 calculates comprehensive thermal coefficient according to Fourier's law
The heat that the heater of product generates is transferred to mounting surface via product and is radiated spacing heat sink, root by white paint
The thermal coefficient of product can be measured according to Fourier formula K=Q/ (T1-T2), wherein Q is the power of heater 2；T1 is product temperature
Degree, is measured by temperature sensor 3；T2 is white paint temperature, is measured by temperature sensor 7；K is that the synthesis of product to mounting surface is thermally conductive
Coefficient.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (4)
1. a kind of synthesis thermal conductivity measurement method of complex heat transfer path product, which is characterized in that include the following steps：
Step 1: the surface mount heater of the sites of heat generation in the product of heat-transfer path complexity, and away from heater edge
Temperature transducer is pasted at 5mm；
Step 2: coating multilayer insulation component in the remaining surface in addition to product mounting surface, wherein the heater pasted on product
It is covered below multilayer insulation component with temperature transducer；
Step 3: heater and temperature transducer are pasted in multilayer insulation assembly surface, so that heater covers to greatest extent
Multilayer insulation assembly surface；
Step 4: product is mounted on aluminium sheet, surface of aluminum plate sprays the thermal control coating that size determines, remaining surface coats multilayer
Insulating assembly；
Step 5: the assembly of product and aluminium sheet is put into vacuum tank, space environment is established, product is heated, and record production
Product temperature degree and mounting surface temperature；
Step 6: calculating comprehensive thermal coefficient according to Fourier's law.
2. the synthesis thermal conductivity measurement method of complex heat transfer path as described in claim 1 product, which is characterized in that described
Step 4 the specific steps are；
The aluminium sheet that one piece of thickness is greater than 5mm is made, product is mounted on aluminium sheet, sprays SR107 white paint, aluminium in the aluminium sheet other side
Plate remaining surface coats multilayer insulation component.
3. the synthesis thermal conductivity measurement method of complex heat transfer path as described in claim 1 product, which is characterized in that described
Step 5 the specific steps are：
The assembly of product and aluminium sheet is put into vacuum tank, the in-orbit space environment of satellite is established, opens the heating on product
Device, while the heater of multilayer insulation assembly surface is adjusted, reduce the leakage heat of multilayer insulation component, it is white to product temperature and aluminium sheet
After painting surface temperature balance, record heating power, product temperature and white paint surface temperature.
4. the synthesis thermal conductivity measurement method of complex heat transfer path as described in claim 1 product, which is characterized in that described
The thermal coefficient of product is calculated in step 6 by Fourier formula K=Q/ (T1-T2), wherein Q is the power of heater；T1
For product temperature, measured by temperature sensor；T2 is white paint temperature, is measured by temperature sensor；K is product to the comprehensive of mounting surface
Close thermal coefficient.
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| CN201810623836.5A CN108828004A (en) | 2018-06-15 | 2018-06-15 | The synthesis thermal conductivity measurement method of complex heat transfer path product |
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| CN201810623836.5A CN108828004A (en) | 2018-06-15 | 2018-06-15 | The synthesis thermal conductivity measurement method of complex heat transfer path product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916953A (en) * | 2019-05-06 | 2019-06-21 | 山东众途复合材料有限公司 | The measuring method of the thermal coefficient of gap shape heat-barrier material under superhigh temperature vacuum or inert atmosphere |
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| CN109916953A (en) * | 2019-05-06 | 2019-06-21 | 山东众途复合材料有限公司 | The measuring method of the thermal coefficient of gap shape heat-barrier material under superhigh temperature vacuum or inert atmosphere |
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