CN206321594U - A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique - Google Patents
A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique Download PDFInfo
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- CN206321594U CN206321594U CN201621444794.1U CN201621444794U CN206321594U CN 206321594 U CN206321594 U CN 206321594U CN 201621444794 U CN201621444794 U CN 201621444794U CN 206321594 U CN206321594 U CN 206321594U
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Abstract
The utility model discloses a kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique, and the device includes：Vacuum tank and constant temperature system；Vacuum tank is set in the constant temperature system；The vacuum tank includes vacuum tank cylinder and vacuum tank upper flange and vacuum-pumping tube；Include solid sample holder, test probe, PT100 platinum resistance thermometers and retainer ring in the vacuum tank cylinder；Compared with the method for traditional measurement powder thermal conductivity factor, the utility model measures the device of powder thermal conductivity factor based on Adsorbent By Using Transient Plane Source Technique, can quickly obtain the thermal conductivity factor of powder isolation material；Device of the present utility model can measure thermal conductivity factor of the powder isolation material under uniform temperature, certain vacuum degree, and Range of measuring temp is in 30K 473K, and vacuum ranges are 10‑3Pa‑1atm。
Description
Technical field
The utility model belongs to the hot physical property measurement technical field of solid powder, and in particular to one kind is based on transient state flat heat source
Method measures the device of powder thermal conductivity factor.
Background technology
Powder isolation material mainly includes expanded perlite, aeroge and hollow glass micropearl etc., with density is small, heat conduction
Coefficient is low, chemical stability is high, good flame resistance the advantages of, be the important heat-insulating material of a class.If powder isolation material is placed in
Under vacuum environment, its heat-insulating property can lift ten times, with very big application value.Thermal conductivity factor is the important heat of heat-insulating material
Physical parameter, therefore, thermal conductivity factor of the measurement powder isolation material under uniform temperature, certain vacuum degree are exhausted for exploring powder
Thermal gauge rule tool is of great significance.
The measuring method of thermal conductivity factor is generally divided into steady state method and Transient Method, steady state method using Fourier one dimensional heat transfer law as
Theoretical foundation, it is desirable to which the heat transfer inside testing sample reaches stable state, even if setting up one inside testing sample surely
Fixed Temperature Distribution, by determining heating power, heat transfer sectional area and thermograde come calculation of thermal conductivity.This method tool
Have clear principle, can Accurate Determining testing sample thermal conductivity factor, it is adaptable to the advantages of wide warm area is measured, but steady state method, test
Time length (according to the difference of the thermal conductivity factor of testing sample and test environment, the testing time typically a few houres, ten a few houres,
Tens hours), and to measuring environment (temperature control, the shape of sample in the adiabatic condition of such as measuring system, measurement process
Shape size etc.) requirement it is more harsh.Transient Method, is divided into heat-pole method, Hot-strip Method and hot plate method (i.e. Adsorbent By Using Transient Plane Source Technique) again,
The Temperature Distribution time to time change of sample in such a method measurement process, according to the Unsteady Heat Transfer differential equation, passes through measurement
Temperature changes with time relation on sample, just can calculate the thermal conductivity factor of testing sample.Transient Method takes short, and response is fast,
It is widely used.
Gustafsson in 1991 invented Adsorbent By Using Transient Plane Source Technique (Transient Plane Source Method,
TPS) the thermal conductivity factor of test material, its method of testing is published in《Scientific instrument are summarized》The 797-804 pages of 3 phases of volume 62 in 1991
(Gustafsson S E.Transient plane source techniques for thermal conductivity
and thermal diffusivity measurements of solid materials[J].Review of
scientific instruments,1991,62(3):797-804.).The core component of Adsorbent By Using Transient Plane Source Technique be it is a kind of both
Can as thermal source, again can as temperature sensor probe, the probe is continuous double-stranded with having for 10 μ m-thick
Metallic nickel thin slice is made, and nickel thin slice is protected by very thin (every the is 0.25 μ m-thick) insulating protective layer (Kapton) of two panels
Shield, similar to sandwich structure.During test, first, probe is clamped in the middle of the testing sample of two blocks of identical materials.Then,
According to the general heat transfer property of testing sample, to the power that probe input is constant within the regular hour, with probe temperature
Increase, heat is transmitted to testing sample, while resistance of popping one's head in accordingly increases, the increased speed of probe temperature depends on testing sample
Rate of heat transfer.During this period of time, the voltage at probe two ends is recorded.Due to power invariability, pass through two ends of popping one's head in
Voltage change is with regard to that can extrapolate the change of probe resistance.Finally, it is known that voltage changes with time, temperature changes with time and
Heat flow, thermal conductivity factor and volumetric heat capacity with regard to detected materials can be calculated.Powder sample is measured with Adsorbent By Using Transient Plane Source Technique
Time used by thermal conductivity factor is general in the range of tens seconds to hundreds of seconds, can quickly obtain the thermal conductivity factor of sample, and measurement is convenient
Fast.If measuring the thermal conductivity factor of powder isolation material with steady state method, according to the thermal conductivity factor of testing sample and test environment
Difference, the testing time is typically in a few houres, ten a few houres even tens hours.
The content of the invention
In order to solve the problem of steady state method measures the thermal conductivity factor overlong time of powder isolation material, the utility model is provided
A kind of powder heat conductivity measuring device based on Adsorbent By Using Transient Plane Source Technique, the device can quickly measure powder isolation material one
Thermal conductivity factor under constant temperature degree, certain vacuum degree.
To reach above-mentioned purpose, the utility model uses following technical proposals：
A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique, the device is included：Vacuum tank and perseverance
Warm system；Vacuum tank is set in the constant temperature system；
The constant temperature system is baking oven (RT-200 DEG C), water-bath system (0 DEG C -100 DEG C), (100 DEG C -200 of oil bath system
DEG C) or other cryogenic systems are (such as：Liquid nitrogen (77K), liquid nitrogen deep case (77K-RT) etc.) etc.；Constant temperature system can be according to measurement need
Will, certain environment temperature is provided for testing sample；2 PT100 platinum resistance thermometers, monitoring constant temperature system are set in constant temperature system
Internal temperature of uniting is constant.
Described vacuum tank is cylindrical structure, and certain vacuum environment is provided for powder sample to be measured.
The vacuum tank includes vacuum tank cylinder, vacuum tank upper flange and vacuum-pumping tube；
Vacuum tank cylinder and vacuum tank the upper flange matching is fixed；Vacuum tank cylinder and vacuum tank upper flange
Between using indium sealing, it is ensured that the air-tightness of device；
The vacuum-pumping tube is connected through vacuum tank upper flange with vacuum tank cylinder；
Include solid sample holder, test probe, PT100 platinum resistance thermometers and retainer ring in the vacuum tank cylinder；
3 PT100 platinum resistance thermometers are set in the vacuum tank cylinder, and monitoring vacuum tank inner barrel temperature is permanent
It is fixed；
The retainer ring is hollow ring structure, and retainer ring includes left half of retainer ring and retainer ring is right half, and this is fixed
Right half of ring and left half of retainer ring are connected；
The upper surface of the retainer ring sets 1 PT100 platinum resistance thermometer.
The retainer ring and the bottom surface of vacuum tank cylinder are connected；Solid sample holder lower half is set in retainer ring only；
The solid sample holder lower half only only matches fixation with solid sample holder upper half；Solid sample holder upper half only with solid sample holder
Lid matching is fixed；
The solid sample holder is the cylindrical structure with hollow cylinder chamber；Solid sample holder is included on solid sample holder
Lid, solid sample holder upper half and solid sample holder lower half are only；
The solid sample holder lower half, solid sample holder upper half, solid sample holder upper lid surface set 1 respectively
PT100 platinum resistance thermometers.
Thin layer is smeared at the solid sample holder lower half, solid sample holder upper half, the solid sample holder top cap place of connecing
Silicone grease, beneficial to the heat transfer between the part of solid sample holder three.
Thermometer hole and air-vent are covered with the solid sample holder；
One end of the test probe is arranged on solid sample holder lower half only between solid sample holder upper half, the other end
It is connected with wire；
Described PT100 platinum resistance thermometers one end passes through the thermometer hole covered on solid sample holder to be connected with test probe,
The other end is connected with wire；
The wire is arranged in vacuum-pumping tube.
Further, the air-vent is provided with stainless (steel) wire.So that when vacuumizing, powder sample to be measured will not be extracted,
The quantity of air-vent and depending on neglecting the size of solid sample holder greatly；
Further, the material of the solid sample holder and retainer ring is to use red copper material.
Further, the material of the vacuum tank is to use 304 stainless steel materials.
Further, the PT100 platinum resistance thermometers can be increased or decreased according to measurement demand and actual conditions.
Thermal conductivity factor of the powder sample under uniform temperature, certain vacuum degree is measured, method of testing is as follows：
1) Hot Disk thermal constant analysis softwares are installed in computer.
2) installation of testing sample：The testing sample area of solid sample holder lower half only is filled into powder sample first, placed
Test probe, by solid sample holder, upper and lower half is connected (with the upper and lower half clamping test probe of solid sample holder)；Will
Fill powder sample in the testing sample area of solid sample holder upper half only；The inner surface covered on solid sample holder is stained with 600-1000
Purpose stainless (steel) wire, only fixation is connect by solid sample holder upper half with top cap；One end of PT100 platinum resistance thermometers is passed through into powder
The thermometer hole covered on last specimen holder is connected with test probe；Solid sample holder lower half, solid sample holder upper half, powder-like
Smear thin layer silicone grease in the product frame top cap place of connecing.
3) installation of retainer ring
The solid sample holder for installing testing sample and test probe is arranged on left half of retainer ring and retainer ring right half
Centre only, left half of retainer ring and right half of retainer ring are connected；3 are set in the outer surface of solid sample holder
PT100 platinum resistance thermometers (solid sample holder lower half only, solid sample holder upper half only, on solid sample holder cover each 1)；Solid
The upper surface for determining ring sets 1 PT100 platinum resistance thermometer；The bottom surface of the lower surface of retainer ring and vacuum tank cylinder is smeared
Thin layer silicone grease, and be connected.
4) construction of vacuum environment
The base plate of vacuum tank cylinder is set into 1 PT100 platinum resistance thermometer, inwall sets 2 PT100 RTD temperature
Degree meter, monitors the temperature of vacuum tank cylinder；Vacuum tank cylinder is sealed with vacuum tank upper flange with indium, is connected；
Mechanical pump is opened, is vacuumized by vacuum-pumping tube for test device, treats that vacuum reaches 10-1Pa magnitudes, open molecular pump and continue
It is evacuated to 10-3Pa, closes vacuum tank valve, molecular pump and mechanical pump；A small amount of nitrogen is filled with vacuum tank, treated in vacuum tank
Vacuum reach test needed for vacuum when, close charging valve；If being filled with after nitrogen, higher than required vacuum, also need out
Open mechanical pump and vacuum is evacuated to required vacuum.
5) construction of temperature environment
2 PT100 platinum resistance thermometers will be set in constant temperature system, and monitoring constant temperature system internal temperature is constant；Will assembling
Good vacuum tank is placed in constant temperature system, constant temperature system can be baking oven (RT-200 DEG C), water-bath system (0 DEG C -100 DEG C),
Oil bath system (100 DEG C -200 DEG C) or other cryogenic systems are (such as：Liquid helium (4.2K), liquid nitrogen (77K), liquid nitrogen deep case (77K-
RT) etc.) etc., needed and selected according to measurement；The internal temperature of constant temperature system is set in the temperature needed for measurement.
6) test is started：Treat the PT100 RTDs at vacuum tank cylinder, solid sample holder, retainer ring and test probe
The reading of thermometer reach measurement needed for temperature when, start test；Hot Disk thermal constants analysis softwares are by computer to survey
Probe header applies certain power within a period of time, and (time applied and power can be by the thermal conductivity factors of testing sample
Sets itself), then test probe surface temperature is raised, to powder internal transmission heat while test probe heats up；Test is visited
The increased speed of head temperature depends on the rate of heat transfer of testing sample, pair of material resistance change and temperature rise based on test probe
It should be related to, the temperature data points of test probe in record heating process, untill the set heat time, computer will
Automatically then data are returned, are calculated by 200 data points of record by Hot Disk thermal constant analysis softwares, so that
To the thermal conductivity factor of powder.
Further, the utility model has used Hot Disk thermal constants analysis software to carry out the collection and processing of data, selects
The Double-surfaces Method and isotropism module in analysis software are selected, specific heating power and heat time is set.
Further, the test probe selected by the utility model is 4922 types.
The beneficial effects of the utility model are as follows：
1st, compared with the method for traditional measurement powder thermal conductivity factor, the utility model is based on Adsorbent By Using Transient Plane Source Technique and measures powder
The device of last thermal conductivity factor, can quickly obtain the thermal conductivity factor of powder isolation material.
2nd, device of the present utility model can measure heat conduction system of the powder isolation material under uniform temperature, certain vacuum degree
Number, Range of measuring temp is in 30K-473K, and vacuum ranges are 10-3Pa-1atm。
Brief description of the drawings
Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is apparatus structure schematic diagram of the present utility model.
Fig. 2 is the profile of the utility model solid sample holder.
Fig. 3 is the structural representation of the utility model retainer ring.
In figure：1. test probe, 2.PT100 platinum resistance thermometers, 3. wires, 4. testing sample areas, 5. solid sample holders,
6. retainer ring, 7. vacuum tanks, 8. vacuum tank cylinders, 9. vacuum tank upper flanges, 10. vacuum-pumping tubes, 11. constant temperature systems,
12. being covered on solid sample holder, 13. solid sample holder upper half, 14. solid sample holder lower half, 15. thermometer holes, 16. breathe freely
Hole, 17. retainer rings are left half, and 18. retainer rings are right half, and 19. retainer rings and vacuum tank base plate connecting hole, 20. retainer rings are left
Right half connecting hole.
Embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and protection domain of the present utility model should not be limited with this.
Embodiment 1
A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique, the device is included：Vacuum tank 7 and perseverance
Warm system 11；Vacuum tank 7 is set in the constant temperature system 11；
The constant temperature system 11 is baking oven (RT-200 DEG C), water-bath system (0 DEG C -100 DEG C), (100 DEG C -200 of oil bath system
DEG C) or other cryogenic systems (most as little as 30K) are (such as：Liquid nitrogen (77K), liquid nitrogen deep case (77K-RT) etc.) etc.；This transient state plane
Heat resource method test device of thermal conductivity coefficient observable temperature scope is 30K-473K, and constant temperature system 11 provides certain ring for testing sample
Border temperature；
2 PT100 platinum resistance thermometers are set in the constant temperature system 11, and the monitoring internal temperature of constant temperature system 11 is constant；
The vacuum tank 7 includes vacuum tank cylinder 8, vacuum tank upper flange 9 and vacuum-pumping tube 10；
Vacuum tank cylinder 8 and vacuum tank upper flange 9 matching is fixed；On vacuum tank cylinder 8 and vacuum tank
Sealed between flange 9 using indium；
The vacuum-pumping tube 10 is connected through vacuum tank upper flange 9 with vacuum tank cylinder 8；
Include solid sample holder 5, test probe 1, PT100 platinum resistance thermometers 2 in the vacuum tank cylinder 8 and fix
Ring 6；
3 PT100 platinum resistance thermometers 2, the inside temperature of monitoring vacuum tank cylinder 8 are set in the vacuum tank cylinder 8
Degree is constant；
The upper surface of the retainer ring 6 sets 1 PT100 platinum resistance thermometer 2；The bottom surface of retainer ring 6 is provided with retainer ring
With the connecting hole 19 of vacuum tank cylinder bottom surface；Retainer ring 6 is provided with retainer ring or so half connecting hole 20；
The retainer ring 6 is hollow ring structure, and retainer ring 6 includes left half 17 of retainer ring and retainer ring is right half 18,
Right half 18 of the retainer ring and left half 17 of retainer ring are bolted fixation；
The retainer ring 6 is threadedly coupled fixation with the underrun of vacuum tank cylinder 8；Powder-like is set in retainer ring 6
Product frame lower half 14；The solid sample holder lower half only 14 only 13 matches fixation with solid sample holder upper half；On the solid sample holder
Fixation is matched with lid on solid sample holder 12 for half 13；
The solid sample holder 5 be inner chamber be diameter 60mm, high 60mm hollow cylinder chamber, outer surface be diameter 80mm,
High 80mm cylindrical structure；Solid sample holder 5 includes lid 12 on solid sample holder, solid sample holder upper half 13 and powder-like
Product frame lower half 14；
Solid sample holder lower half only 14 only 13 clamps test probe 2 with solid sample holder upper half；
The solid sample holder lower half only 14, upper half only 13, the surface of lid 12 1 PT100 platinum resistance temperature is set respectively
Meter 2.
The solid sample holder lower half only 14, upper half only 13, the junction of lid 12 smear thin layer silicone grease, beneficial to powder-like
Heat transfer between the part of product frame 5 three.
Lid 12 is provided with thermometer hole 15 and air-vent 16 on the solid sample holder；
One end of the test probe 2 is arranged on solid sample holder lower half only between 14 and solid sample holder upper half 13,
The other end is connected with wire 3；
Thermometer hole 15 and test probe 1 of the described one end of PT100 platinum resistance thermometers 2 through lid 12 on solid sample holder
Connection, the other end is connected with wire 3；
The wire 3 is arranged in vacuum-pumping tube 10.
Air-vent 16 of the lid 12 provided with 12 a diameter of 5mm on the solid sample holder, the air-vent is provided with 1000
Mesh stainless (steel) wire.
The material of the solid sample holder 5 and retainer ring 6 is to use red copper material.
The material of the vacuum tank 7 is to use 304 stainless steel materials.
The meter of PT100 platinum resistance temperatures 2 can be increased or decreased according to measurement demand and actual conditions.
Powder is measured in 293K, 10-3Thermal conductivity factor under Pa, step is as follows：
1) Hot Disk thermal constant analysis softwares are installed in computer；
2) installation of testing sample：The testing sample area 4 of solid sample holder lower half 14 is filled into powder sample first, put
Test probe 1 is put, solid sample holder upper half 13, solid sample holder lower half 14 are connected and (use solid sample holder upper half
Only 13, solid sample holder lower half only 14 clamps test probe)；The testing sample area 4 of solid sample holder upper half 13 is filled into powder
Last sample；The inner surface of lid 12 is stained with the stainless (steel) wire of 1000 mesh on solid sample holder, by solid sample holder upper half only 13 with
Upper lid 12 is connected；The thermometer hole 15 through lid 12 on solid sample holder and survey by one end of PT100 platinum resistance thermometers 2
Probe header 1 is connected；Solid sample holder lower half is only 14, only 13, on solid sample holder the junction of lid 12 is applied solid sample holder upper half
Smear thin layer silicone grease.
3) installation of retainer ring
The solid sample holder 5 for installing testing sample and test probe 1 is arranged on retainer ring left half 17 and retainer ring
Right half 18 centre, left half 17 of retainer ring and right half 18 of retainer ring are connected；In the outer surface of solid sample holder 5
Set 3 PT100 platinum resistance thermometers 2 (solid sample holder lower half only 14, solid sample holder upper half only 13, on solid sample holder
12 each 1, lid)；In the upper surface of retainer ring 6,1 PT100 platinum resistance thermometer 2 is set；By the lower surface and vacuum of retainer ring 6
Thin-layer silicon fat is smeared in the bottom surface of shell 8, and is connected.
4) construction of vacuum environment
The base plate of vacuum tank cylinder 8 is set into 1 PT100 platinum resistance thermometer 2, inwall sets 2 PT100 RTDs
Thermometer 2, the temperature of monitoring vacuum tank cylinder 8；Vacuum tank cylinder 8 is sealed with vacuum tank upper flange 9 with indium, connected
It is fixed；Mechanical pump is opened, is vacuumized by vacuum-pumping tube 10 for test device, treats that vacuum reaches 10-1Pa magnitudes, open molecule
Pump continues to be evacuated to 10-3Pa, closes vacuum tank valve, molecular pump and mechanical pump.
5) construction of temperature environment
Because measurement temperature is just in room temperature, thus vacuum tank 7 is disposed within.
6) test is started：Treat the PT100 RTDs at vacuum tank cylinder, solid sample holder, retainer ring and test probe
The reading of thermometer 2 reach test needed for temperature when, start test；The utility model has used the analysis of Hot Disk thermal constants soft
Part carries out Double-surfaces Method and isotropism module in the collection and processing of data, selection analysis software, the specific heating work(of setting
Rate and heat time；Hot Disk thermal constants analysis softwares apply set specified electric work by computer to test probe 1
Rate, test probe surface temperature rise, the test probe 1 is 4922 types；To biography inside powder while test probe 1 heats up
Defeated heat, while the temperature of test probe 1 changes, the increased speed of the temperature of test probe 1 depends on the heat transfer of testing sample
The temperature of test probe 1 in speed, the corresponding relation of material resistance change and temperature rise based on test probe 1, record heating process
Number of degrees strong point, until the set heat time, computer can record 200 data points automatically, then pass through Hot Disk heat
Constant Analysis software is returned to data, calculated, so as to obtain the thermal conductivity factor of powder.
Embodiment 2
A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique, as described in Example 1.
Thermal conductivity factor of the powder under 100 DEG C, 10Pa is measured, step is as follows：
1) Hot Disk thermal constant analysis softwares are installed in computer；
2) installation of testing sample：The testing sample area 4 of solid sample holder lower half 14 is filled into powder sample first, put
Test probe 1 is put, solid sample holder upper half 13, solid sample holder lower half 14 are connected and (use solid sample holder upper half
Only 13, lower half only 14 clamp test probe)；The testing sample area 4 of solid sample holder upper half 13 is filled into powder sample；In powder
The inner surface of lid 12 is stained with the stainless (steel) wire of 1000 mesh on last specimen holder, and only 13 solid sample holder upper half is connected into solid with upper lid 12
It is fixed；One end of PT100 platinum resistance thermometers 2 is connected through the thermometer hole 15 of lid 12 on solid sample holder with test probe 1；
Solid sample holder lower half is only 14, only 13, on solid sample holder thin layer silicone grease is smeared in the junction of lid 12 to solid sample holder upper half.
3) installation of retainer ring
The solid sample holder 5 for installing testing sample and test probe 1 is arranged on retainer ring left half 17 and retainer ring
Right half 18 centre, left half 17 of retainer ring and right half 18 of retainer ring are connected；In the outer surface of solid sample holder 5
Set 3 PT100 platinum resistance thermometers 2 (solid sample holder lower half only 14, solid sample holder upper half only 13, on solid sample holder
12 each 1, lid)；In the upper surface of retainer ring 6,1 PT100 platinum resistance thermometer 2 is set；By the lower surface and vacuum of retainer ring 6
Thin-layer silicon fat is smeared in the bottom surface of shell 8, and is connected.
4) construction of vacuum environment
The base plate of vacuum tank cylinder 8 is set into 1 PT100 platinum resistance thermometer 2, inwall sets 2 PT100 RTDs
Thermometer 2, the temperature of monitoring vacuum tank cylinder 8；Vacuum tank cylinder 8 is sealed with vacuum tank upper flange 9 with indium, connected
It is fixed；Mechanical pump is opened, is vacuumized by vacuum-pumping tube 10 for test device, treats that vacuum reaches 10-1Pa magnitudes, open molecule
Pump continues to be evacuated to 10-3Pa, closes vacuum tank valve, molecular pump and mechanical pump；A small amount of nitrogen is filled with vacuum tank 7, treats true
When vacuum in empty container 7 reaches 10Pa, charging valve is closed.If being filled with after nitrogen, higher than required vacuum, also need to open
Vacuum is evacuated to 10Pa by mechanical pump.
5) construction of temperature environment
2 PT100 platinum resistance thermometers 2 will be set in constant temperature system 11, and the monitoring internal temperature of constant temperature system 11 is constant；Will
The vacuum tank 7 assembled is placed in constant temperature system 11, and now constant temperature system 11 is baking oven (RT-200 DEG C) or water-bath system
(0 DEG C -100 DEG C)；The internal temperature of constant temperature system 11 is set in 100 DEG C.
6) test is started：Treat the PT100 RTDs at vacuum tank cylinder, solid sample holder, retainer ring and test probe
The reading of thermometer 2 reach test needed for temperature when, start test；The utility model has used the analysis of Hot Disk thermal constants soft
Part carries out Double-surfaces Method and isotropism module in the collection and processing of data, selection analysis software, the specific heating work(of setting
Rate and heat time；Hot Disk thermal constants analysis softwares apply set specified electric work by computer to test probe 1
Rate, test probe surface temperature rise, the test probe 1 is 4922 types；To biography inside powder while test probe 1 heats up
Defeated heat, while the temperature of test probe 1 changes, the increased speed of the temperature of test probe 1 depends on the heat transfer of testing sample
The temperature of test probe 1 in speed, the corresponding relation of material resistance change and temperature rise based on test probe 1, record heating process
Number of degrees strong point, until the set heat time, computer can record 200 data points automatically, then pass through Hot Disk heat
Constant Analysis software is returned to data, calculated, so as to obtain the thermal conductivity factor of powder.
Embodiment 3
A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique, as described in Example 1.
Powder is measured in 77K, 10-3Thermal conductivity factor under Pa, step is as follows：
1) Hot Disk thermal constant analysis softwares are installed in computer；
2) installation of testing sample：The testing sample area 4 of solid sample holder lower half 14 is filled into powder sample first, put
Test probe 1 is put, solid sample holder upper half 13, solid sample holder lower half 14 are connected and (use solid sample holder upper half
Only 13, solid sample holder lower half only 14 clamps test probe)；The testing sample area 4 of solid sample holder upper half 13 is filled into powder
Last sample；The inner surface of lid 12 is stained with the stainless (steel) wire of 1000 mesh on solid sample holder, by solid sample holder upper half only 13 with
Lid 12 is connected on solid sample holder；One end of PT100 platinum resistance thermometers 2 is passed through to the temperature of lid 12 on solid sample holder
Meter hole 15 is connected with test probe 1；Solid sample holder lower half only 14, solid sample holder upper half only 13, lid 12 on solid sample holder
Smear thin layer silicone grease in junction.
3) installation of retainer ring
The solid sample holder 5 for installing testing sample and test probe 1 is arranged on retainer ring left half 17 and retainer ring
Right half 18 centre, left half 17 of retainer ring and right half 18 of retainer ring are connected；In the outer surface of solid sample holder 5
Set 3 PT100 platinum resistance thermometers 2 (solid sample holder lower half only 14, solid sample holder upper half only 13, on solid sample holder
12 each 1, lid)；In the upper surface of retainer ring 6,1 PT100 platinum resistance thermometer 2 is set；By the lower surface and vacuum of retainer ring 6
Thin-layer silicon fat is smeared in the bottom surface of shell 8, and is connected.
4) construction of vacuum environment
The base plate of vacuum tank cylinder 8 is set into 1 PT100 platinum resistance thermometer 2, inwall sets 2 PT100 RTDs
Thermometer 2, the temperature of monitoring vacuum tank cylinder 8；Vacuum tank cylinder 8 is sealed with vacuum tank upper flange 9 with indium, connected
It is fixed；Mechanical pump is opened, is vacuumized by vacuum-pumping tube 10 for test device, treats that vacuum reaches 10-1Pa magnitudes, open molecule
Pump continues to be evacuated to 10-3Pa, closes vacuum tank valve, molecular pump and mechanical pump.
5) construction of temperature environment
2 PT100 platinum resistance thermometers 2 will be set in constant temperature system 11, and the monitoring internal temperature of constant temperature system 11 is constant；Will
The vacuum tank 7 assembled is placed in constant temperature system 11, now, and constant temperature system 11 is the Dewar container for liquefied nitrogen for filling liquid nitrogen.
6) test is started：Treat the PT100 RTDs at vacuum tank cylinder, solid sample holder, retainer ring and test probe
The reading of thermometer 2 reach test needed for temperature when, start test；The utility model has used the analysis of Hot Disk thermal constants soft
Part carries out Double-surfaces Method and isotropism module in the collection and processing of data, selection analysis software, the specific heating work(of setting
Rate and heat time；Hot Disk thermal constants analysis softwares apply set specified electric work by computer to test probe 1
Rate, test probe surface temperature rise, the test probe 1 is 4922 types；To biography inside powder while test probe 1 heats up
Defeated heat, while the temperature of test probe 1 changes, the increased speed of the temperature of test probe 1 depends on the heat transfer of testing sample
The temperature of test probe 1 in speed, the corresponding relation of material resistance change and temperature rise based on test probe 1, record heating process
Number of degrees strong point, until the set heat time, computer can record 200 data points automatically, then pass through Hot Disk heat
Constant Analysis software is returned to data, calculated, so as to obtain the thermal conductivity factor of powder.
What word " on ", " under ", the "left", "right" in the description orientation employed in this paper etc. were for explanation facilitates base
For orientation in accompanying drawing shown in drawing, in actual device these orientation may due to device disposing way and
It is different.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all embodiments can not be exhaustive here,
It is every to belong to the obvious change or change still in of the present utility model that the technical solution of the utility model extends out
The row of protection domain.
Claims (5)
1. a kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique, it is characterised in that the device includes：Vacuum
Container (7) and constant temperature system (11)；Vacuum tank (7) is set in the constant temperature system (11)；
The vacuum tank (7) includes vacuum tank cylinder (8) and vacuum tank upper flange (9) and vacuum-pumping tube (10)；
The vacuum tank cylinder (8) and vacuum tank upper flange (9) matching are fixed；
Include in the vacuum tank cylinder (8) solid sample holder (5), test probe (1), PT100 platinum resistance thermometers (2),
Wire (3) and retainer ring (6)；
The solid sample holder (5) includes lid (12) on solid sample holder, solid sample holder upper half only (13) and solid sample holder
Lower half is only (14)；
The retainer ring (6) and the bottom surface of vacuum tank cylinder (8) are connected；Set in retainer ring (6) under solid sample holder
Half (14)；Only (14) match fixation to the solid sample holder lower half with solid sample holder upper half (13)；
Only (13) match fixation to the solid sample holder upper half with covering (12) on solid sample holder；
(12) are covered on the solid sample holder and are provided with thermometer hole (15) and air-vent (16)；
One end of the test probe (1) be arranged on solid sample holder lower half only (14) and solid sample holder upper half only (13) it
Between, the other end is connected with wire (3)；
Visited through the thermometer hole (15) of lid (12) on solid sample holder with test described PT100 platinum resistance thermometers (2) one end
Head (1) connection；The other end is connected with wire (3)；
The wire (3) is arranged in vacuum-pumping tube (10).
2. device according to claim 1, it is characterised in that the air-vent (16) is provided with stainless (steel) wire.
3. device according to claim 1, it is characterised in that the material of the solid sample holder (5) and retainer ring (6) is
Using red copper material.
4. the device according to claim 1 or 3, it is characterised in that the solid sample holder (5) is with hollow cylinder chamber
Cylindrical structure.
5. device according to claim 1, it is characterised in that the retainer ring (6) include retainer ring left half (17) and
Half (18) in the retainer ring right side, the retainer ring right side half (18) and retainer ring left half (17) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621444794.1U CN206321594U (en) | 2016-12-27 | 2016-12-27 | A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621444794.1U CN206321594U (en) | 2016-12-27 | 2016-12-27 | A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique |
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| CN206321594U true CN206321594U (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621444794.1U Active CN206321594U (en) | 2016-12-27 | 2016-12-27 | A kind of device that powder thermal conductivity factor is measured based on Adsorbent By Using Transient Plane Source Technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562610A (en) * | 2018-03-13 | 2018-09-21 | 中国石油天然气股份有限公司 | A kind of method and system of determining thermal conductivity of rocks |
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2016
- 2016-12-27 CN CN201621444794.1U patent/CN206321594U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562610A (en) * | 2018-03-13 | 2018-09-21 | 中国石油天然气股份有限公司 | A kind of method and system of determining thermal conductivity of rocks |
| CN108562610B (en) * | 2018-03-13 | 2021-11-02 | 中国石油天然气股份有限公司 | Method and system for determining rock thermal conductivity |
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