CN201926635U - Joint surface thermal contact resistance measuring device - Google Patents
Joint surface thermal contact resistance measuring device Download PDFInfo
- Publication number
- CN201926635U CN201926635U CN2010206732180U CN201020673218U CN201926635U CN 201926635 U CN201926635 U CN 201926635U CN 2010206732180 U CN2010206732180 U CN 2010206732180U CN 201020673218 U CN201020673218 U CN 201020673218U CN 201926635 U CN201926635 U CN 201926635U
- Authority
- CN
- China
- Prior art keywords
- flow meter
- heat flow
- heat
- arranged below
- contact resistance
- 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.)
- Expired - Lifetime
Links
Images
Abstract
A joint surface thermal contact resistance measuring device is characterized in that a lower fixed plate arranged at the bottom of a vacuum box is provided with a screw, the screw is provided with an upper fixed plate and a loading bolt, a weighing sensor is arranged below the upper fixed plate, a heating part is arranged below the weighing sensor, a heating ring is connected with the outside of the heating part in a sleeved mode, an upper heat-flow meter is arranged below the heating part, two measured parts are arranged below the upper heat-flow meter, a lower heat-flow meter is arranged below the measured parts, a heat insulating ring is connected with the outsides of the upper heat-flow meter, the lower heat-flow meter and the measured parts in a sleeved mode, a sensor is inserted on the heat insulating ring transversely, one end of the sensor extends into the insides of the upper heat-flow meter, the lower heat-flow meter and the measured parts, the other end of the sensor is connected with a wire collecting support, the wire connecting support and the weighing sensor are connected onto a processing display unit, and a refrigerating part is arranged below the lower heat-flow meter. By the aid of the temperature data of the lower heat-flow meter, the upper heat-flow meter and the measured parts, the thermal rate flowing the joint surface of the two measured parts is computed, and the joint surface thermal contact resistance measuring device has the advantage of simplicity and easiness in operation.
Description
Technical field
The utility model belongs to field of measuring technique, faying face thermal contact resistance measurement mechanism under particularly a kind of vacuum and the normal temperature and pressure environment.
Background technology
Have a large amount of faying faces in complex mechanical systems such as precision machine tool, large aircraft, because their existence, the continuity of mechanical system structure is destroyed, and this influences the complete machine performance of mechanical system dramatically.The faying face thermal contact resistance is as one of faying face key property parameter, and its order of accuarcy will directly influence faying face parameter characteristic model.Because a large amount of existence of faying face on the engineering, and the thermal equilibrium and the heat that influences mechanical system transmits, so a kind of simple and easy experiment table that can accurately measure thermal contact resistance, has very strong engineering significance.It can study the pattern of faying face and contact pressure to the rule that influences of faying face thermal contact resistance, sets up the database of various faying face thermal contact resistances, and helps accurately to determine faying face characterisitic parameter model.And at present the testing table measured of faying face thermal contact resistance is very complicated, and especially the realization of loading system under the vacuum environment and refrigeration system makes the total system additional complexity.
Summary of the invention
In order to overcome the defective of above-mentioned prior art, the purpose of this utility model is to provide a kind of faying face thermal contact resistance measurement mechanism, by measuring the temperature value of test specimen and heat flow meter diverse location, can calculate the heat flux and the interface temperature drop that flow through faying face respectively, obtain thermal contact resistance then, have characteristics simple to operation.
In order to achieve the above object, the technical solution of the utility model is achieved in that
A kind of faying face thermal contact resistance measurement mechanism, comprise vacuum tank 1, be provided with bottom plate 11 in the bottom of vacuum tank 1, bottom plate 11 is provided with screw rod 5, the upper end of screw rod 5 is provided with upper mounted plate 4 and loading bolt 2, the below of upper mounted plate 4 is provided with LOAD CELLS 3, the below of LOAD CELLS 3 is provided with heating member 6, the outer cover of heating member 6 is connected to heating ring 18, the below of heating member 6 is provided with heat flow meter 8, the below of last heat flow meter 8 is provided with two test specimens 9, the below of test specimen 9 is provided with down heat flow meter 7, last heat flow meter 8, test specimen 9 and following heat flow meter 7 threes' outer cover is connected to heat insulation loop 16, laterally be inserted with sensor 15 on the heat insulation loop 16, sensor 15 1 ends extend into heat flow meter 8, test specimen 9 and following heat flow meter 7 threes' inside, the other end is connected on the line concentration support 14, line concentration support 14 is connected on the processes and displays unit 17 by data line with LOAD CELLS 3, the below of following heat flow meter 7 is provided with cooling piece 13, cooling piece 13 places refrigeration groove 12, is mixture of ice and water 10 in the refrigeration groove 12.
Temperature data under the utility model passes through on heat flow meter 7 and last heat flow meter 8 and the test specimen 9 calculates the heat flux that flows through two test specimen 9 faying faces.When loading different normal pressures, measurement mechanism of the present utility model can be to different surface in contact patterns, different normal pressure, different parameters such as testpieces material behavior under the faying face thermal contact resistance vacuum and measure under the normal temperature, and utilizes interpretation surface in contact pattern, normal pressure and the testpieces material rule that influences to thermal contact resistance.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model measuring principle synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
With reference to Fig. 1, a kind of faying face thermal contact resistance measurement mechanism, comprise vacuum tank 1, be provided with bottom plate 11 in the bottom of vacuum tank 1, bottom plate 11 is provided with screw rod 5, the upper end of screw rod 5 is provided with upper mounted plate 4 and loading bolt 2,2 pairs of upper mounted plates of loading bolt 4 realize that gravity loads, the below of upper mounted plate 4 is provided with LOAD CELLS 3, the below of LOAD CELLS 3 is provided with heating member 6, the outer cover of heating member 6 is connected to heating ring 18, the below of heating member 6 is provided with heat flow meter 8, the below of last heat flow meter 8 is provided with two test specimens 9, the below of test specimen 9 is provided with down heat flow meter 7, last heat flow meter 8, test specimen 9 and following heat flow meter 7 threes' outer cover is connected to heat insulation loop 16, prevent that heat from flowing out to side, laterally be inserted with sensor 15 on the heat insulation loop 16, sensor 15 1 ends extend into heat flow meter 8, test specimen 9 and following heat flow meter 7 threes' inside, the other end is connected on the line concentration support 14, line concentration support 14 is connected on the processes and displays unit 17 by data line with LOAD CELLS 3, the below of following heat flow meter 7 is provided with cooling piece 13, and cooling piece 13 places refrigeration groove 12, is mixture of ice and water 10 in the refrigeration groove 12.
Principle of work of the present utility model is:
One, definite environment of measuring the faying face thermal contact resistance is still to be under the normality, if measure under the vacuum environment, then to need will to be evacuated in the vacuum tank by vacuum pump under the vacuum.If under the normal temperature and pressure, then do not need to vacuumize;
Two, the pressure size of tightening extent control test specimen 9 by the loading bolt on the upper mounted plate 42 is with pressure modulation expectation value in advance;
Three, close vacuum tank, vacuum tank is evacuated.Open the heating power supply switch, wait for that the temperature data of each temperature sensor is stable after, by processes and displays unit 17 record temperature datas, deal with the work.As not needing vacuum measurement, after closing vacuum tank, do not vacuumize.
Measuring principle of the present utility model is:
When the temperature sensor temperature data on faying face formation test specimen and heat flow meter is stablized, represent that promptly the hot-fluid transmission has settled out.The measurement thermal contact resistance is defined as
Comprise two parts: the one, flow through the heat flux Q of faying face, the 2nd, faying face temperature drop Δ T.The heat flux that flows through faying face can multiply by the material heat-conduction coefficient by thermograde and obtain according to Fourier's formula that conducts heat.Because up and down the thermal conductance data of heat flow meter are known,, the temperature data by temperature sensor on it can obtain as long as calculating its vertical direction thermograde
Wherein A is a contact area, and k is a material thermal conductivity.Owing to inevitably heat dissipation occurs, the heat flux quantity that following heat flow meter 7 and last heat flow meter 8 are measured is different.Here get its two mean value as the heat flux that flows through the interface.Second portion, temperature drop Δ T is at the interface obtained by the temperature gap of test specimen 9 faying faces.Utilize the Temperature Distribution on the faying face formation test specimen, make two test specimen temperature Temperature Distribution vertically up and down under same coordinate, it is fitted to straight line respectively, can there be a temperature drop at the interface in it.Its principle is illustrated in fig. 2 shown below.
Above content is to further describing that the utility model is done in conjunction with concrete preferred implementation; can not assert that embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by claims of being submitted to.
Claims (1)
1. faying face thermal contact resistance measurement mechanism, it is characterized in that, comprise vacuum tank (1), be provided with bottom plate (11) in the bottom of vacuum tank (1), bottom plate (11) is provided with screw rod (5), the upper end of screw rod (5) is provided with upper mounted plate (4) and loading bolt (2), the below of upper mounted plate (4) is provided with LOAD CELLS (3), the below of LOAD CELLS (3) is provided with heating member (6), the outer cover of heating member (6) is connected to heating ring (18), the below of heating member (6) is provided with heat flow meter (8), the below of last heat flow meter (8) is provided with two test specimens (9), the below of test specimen (9) is provided with down heat flow meter (7), last heat flow meter (8), test specimen (9) and following heat flow meter (7) three's outer cover is connected to heat insulation loop (16), laterally be inserted with sensor (15) on the heat insulation loop (16), sensor (15) one ends extend into heat flow meter (8), test specimen (9) and following heat flow meter (7) three's inside, the other end is connected on the line concentration support (14), line concentration support (14) is connected on the processes and displays unit (17) by data line with LOAD CELLS (3), the below of following heat flow meter (7) is provided with cooling piece (13), cooling piece (13) places refrigeration groove (12), is mixture of ice and water (10) in the refrigeration groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206732180U CN201926635U (en) | 2010-12-20 | 2010-12-20 | Joint surface thermal contact resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206732180U CN201926635U (en) | 2010-12-20 | 2010-12-20 | Joint surface thermal contact resistance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926635U true CN201926635U (en) | 2011-08-10 |
Family
ID=44430480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206732180U Expired - Lifetime CN201926635U (en) | 2010-12-20 | 2010-12-20 | Joint surface thermal contact resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926635U (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115940A (en) * | 2013-01-25 | 2013-05-22 | 西安交通大学 | Contact thermal resistance measuring device capable of adjusting loading force and temperature within wide range |
| CN104132963A (en) * | 2014-08-08 | 2014-11-05 | 哈尔滨工业大学 | Device for detecting thermal contact resistance under micro-stress condition |
| CN104215661A (en) * | 2014-09-02 | 2014-12-17 | 兰州大学 | Solid interface contact thermal resistance test device based on super-magnetostrictive intelligent material |
| CN104569045A (en) * | 2015-01-14 | 2015-04-29 | 北京工业大学 | Method and device for testing thermal contact resistance of joint surfaces between cylindrical sleeve walls |
| CN105388184A (en) * | 2015-12-17 | 2016-03-09 | 北京航空航天大学 | Specimen installation fixture used for contact thermal resistance testing |
| CN105572162A (en) * | 2015-12-17 | 2016-05-11 | 北京航空航天大学 | Thermal contact resistance testing equipment with compensation heating system and thermal insulation system |
| CN106896131A (en) * | 2015-12-21 | 2017-06-27 | 中国特种设备检测研究院 | Material interface heat conduction experimental rig and its experimental technique in vacuum environment |
| CN107064214A (en) * | 2017-06-15 | 2017-08-18 | 天津大学 | A kind of measurement apparatus of fixed combinating surface thermal contact resistance |
| CN107300570A (en) * | 2016-04-15 | 2017-10-27 | 中国特种设备检测研究院 | Vacuum deep cooling container inner support material interface heat conduction experimental rig and method |
| CN107782762A (en) * | 2017-09-15 | 2018-03-09 | 湖北航天技术研究院总体设计所 | A kind of thermal contact resistance measurement apparatus that on-load pressure is can adjust in vacuum tank |
| CN107870179A (en) * | 2017-12-15 | 2018-04-03 | 扬州大学 | Method for measuring bituminous concrete thermal contact resistance |
| CN108007964A (en) * | 2017-12-27 | 2018-05-08 | 齐鲁工业大学 | A kind of thermal contact resistance test device and test method |
| CN108020582A (en) * | 2018-01-25 | 2018-05-11 | 中国科学院合肥物质科学研究院 | Material contact thermo-resistance measurement platform under a kind of vacuum condition |
| CN108195878A (en) * | 2017-12-15 | 2018-06-22 | 北京长城华冠汽车科技股份有限公司 | The test device and method of a kind of thermal contact resistance |
| CN108931551A (en) * | 2018-05-31 | 2018-12-04 | 重庆大学 | A kind of surface of solids engaging portion contact conductane measuring device |
| CN109001251A (en) * | 2018-05-25 | 2018-12-14 | 扬州大学 | A kind of physical method for reducing asphalt skin temperature |
-
2010
- 2010-12-20 CN CN2010206732180U patent/CN201926635U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115940A (en) * | 2013-01-25 | 2013-05-22 | 西安交通大学 | Contact thermal resistance measuring device capable of adjusting loading force and temperature within wide range |
| CN104132963A (en) * | 2014-08-08 | 2014-11-05 | 哈尔滨工业大学 | Device for detecting thermal contact resistance under micro-stress condition |
| CN104215661A (en) * | 2014-09-02 | 2014-12-17 | 兰州大学 | Solid interface contact thermal resistance test device based on super-magnetostrictive intelligent material |
| CN104215661B (en) * | 2014-09-02 | 2017-02-22 | 兰州大学 | Solid interface contact thermal resistance test device based on super-magnetostrictive intelligent material |
| CN104569045A (en) * | 2015-01-14 | 2015-04-29 | 北京工业大学 | Method and device for testing thermal contact resistance of joint surfaces between cylindrical sleeve walls |
| CN104569045B (en) * | 2015-01-14 | 2017-06-06 | 北京工业大学 | Faying face thermal contact resistance method of testing and device between cylindrical sleeve barrel |
| CN105388184A (en) * | 2015-12-17 | 2016-03-09 | 北京航空航天大学 | Specimen installation fixture used for contact thermal resistance testing |
| CN105572162A (en) * | 2015-12-17 | 2016-05-11 | 北京航空航天大学 | Thermal contact resistance testing equipment with compensation heating system and thermal insulation system |
| CN106896131A (en) * | 2015-12-21 | 2017-06-27 | 中国特种设备检测研究院 | Material interface heat conduction experimental rig and its experimental technique in vacuum environment |
| CN107300570A (en) * | 2016-04-15 | 2017-10-27 | 中国特种设备检测研究院 | Vacuum deep cooling container inner support material interface heat conduction experimental rig and method |
| CN107064214A (en) * | 2017-06-15 | 2017-08-18 | 天津大学 | A kind of measurement apparatus of fixed combinating surface thermal contact resistance |
| CN107782762A (en) * | 2017-09-15 | 2018-03-09 | 湖北航天技术研究院总体设计所 | A kind of thermal contact resistance measurement apparatus that on-load pressure is can adjust in vacuum tank |
| CN107870179A (en) * | 2017-12-15 | 2018-04-03 | 扬州大学 | Method for measuring bituminous concrete thermal contact resistance |
| CN108195878A (en) * | 2017-12-15 | 2018-06-22 | 北京长城华冠汽车科技股份有限公司 | The test device and method of a kind of thermal contact resistance |
| CN108007964A (en) * | 2017-12-27 | 2018-05-08 | 齐鲁工业大学 | A kind of thermal contact resistance test device and test method |
| CN108020582A (en) * | 2018-01-25 | 2018-05-11 | 中国科学院合肥物质科学研究院 | Material contact thermo-resistance measurement platform under a kind of vacuum condition |
| CN109001251A (en) * | 2018-05-25 | 2018-12-14 | 扬州大学 | A kind of physical method for reducing asphalt skin temperature |
| CN108931551A (en) * | 2018-05-31 | 2018-12-04 | 重庆大学 | A kind of surface of solids engaging portion contact conductane measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201926635U (en) | Joint surface thermal contact resistance measuring device | |
| CN101126729B (en) | Double heat flux gauge steady state method for measuring material heat conductivity | |
| CN201673133U (en) | Heat transfer coefficient detector of building retaining structure | |
| CN102768225B (en) | High-accuracy method for testing thermal interface material | |
| CN103293182A (en) | Automatic heat conductivity coefficient tester through protective heat flow meter method and detection method | |
| CN102768224B (en) | Testing method for testing solid-solid contact thermal resistance by using forward and reverse bidirectional heat flux method | |
| CN102384928B (en) | Method for measuring thermal conductivity of high-conductivity thermal solid material | |
| CN103234661B (en) | A kind of calibrating installation with independent vacuum chamber | |
| CN102721452B (en) | Online calibrating device for high-temperature liquid metal flow | |
| CN103983660B (en) | A kind of indoor rock sample test device of thermal conductivity coefficient | |
| CN203053902U (en) | Building envelope structure heat transfer coefficient field detection system | |
| CN103868947A (en) | Measurement method and measurement device for 0-60 DEG C rock linear thermal expansion coefficient | |
| CN103837567B (en) | The liquid specific heat capacity measurement device of energy self-equilibrating pressurization and method | |
| CN108333215B (en) | A kind of analysis of thermal conductivity method of aerogel heat-proof layer in integral type T PS | |
| CN203053903U (en) | Novel device for evaluating high-temperature liquid protective performance of thermal protection material | |
| CN108107072A (en) | A kind of soil body Determination of conductive coefficients method and experimental rig | |
| CN102620846A (en) | Method of calculating steady-state heat capacity of power circuit | |
| CN104267070A (en) | Device for measuring heat conductivity coefficient of liquid on basis of transient plane source method | |
| CN101311685A (en) | Thermal mass flow meter | |
| CN203849193U (en) | Indoor rock sample heat conduction coefficient testing device | |
| CN107589147A (en) | It is a kind of to measure soil body thermal conductivity factor and the device and method of resistivity simultaneously | |
| CN203132642U (en) | Portable oil level detection tool for transformer | |
| CN204882431U (en) | Measure granular material coefficient of heat conductivity's mould | |
| CN103913483A (en) | High-precision thermal resistance testing device and testing method thereof | |
| CN105548251B (en) | A kind of wire icing process convection transfer rate measuring device and measuring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |
|
| CX01 | Expiry of patent term |