CN208721269U - A kind of temperature measuring device - Google Patents
A kind of temperature measuring device Download PDFInfo
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- CN208721269U CN208721269U CN201821474548.XU CN201821474548U CN208721269U CN 208721269 U CN208721269 U CN 208721269U CN 201821474548 U CN201821474548 U CN 201821474548U CN 208721269 U CN208721269 U CN 208721269U
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Abstract
The utility model provides a kind of temperature measuring device, comprising: vacuum tank (11)；Radiant heating case (13) is located in the vacuum tank (11), and radiant heating case (13) outer surface is equipped with electric heating wire, and the object under test (3) is placed in radiant heating case (13) center；Power supply (21), for heating the radiant heating case (13)；Temperature data acquisition device (23), including multiple thermocouples, wherein, a part in the multiple thermocouple is set to each surface of the object under test (3), and another part in the multiple thermocouple is set to the surface of the radiant heating case (13).
Description
Technical field
The utility model relates to technical field of temperature measurement more particularly to a kind of temperature measuring devices.
Background technique
In recent years, with battery be used as power source or auxiliary power source Development of Electric Vehicles it is swift and violent, such as lead-acid battery
Largely apply to low-speed vehicle at home, and nickel-metal hydride battery largely applies in Toyota's series hybrid electric vehicle.Lithium-ion electric
Pond represents following development in power battery field since energy density is high, have extended cycle life the advantages such as low with self-discharge rate
Direction.Other than electric car field, lithium ion battery is also widely used in fields such as aerospace, ship and some military
Equipment.However, the performance of lithium ion battery be influenced by temperature it is very big, temperature it is higher or be unevenly distributed can accelerate it is cell performance
Can decline, reduce the service life of battery, battery overheats meeting so that battery thermal runaway, and then leads to cells burst, causes and pacifies
Full problem jeopardizes the life and property safety of user.
Therefore, good battery thermal management technology is guarantee battery performance, the primary condition in service life and safety, and specific heat capacity
It is the key that battery thermal management system design with thermal conductivity as characterization most important two thermophysical parameters of battery.With lithium electricity
Pond is in order to which there are two types of typical packing forms for structure, i.e., cylinder and cuboid, the battery of two kinds of structures are all by multiple thin
Layer (such as anode layer, negative electrode layer, membrane layer) lap wound forms, and difference is that cylindrical battery is that multiple thin layers are directly wound in one
A battery module, and the battery of rectangular parallelepiped structure is that first multiple thin layers are wound in flat module, multiple flat block combiners
At the battery core of an entirety.Since the thermal coefficient difference of substance (such as copper, plastics, graphite) between different thin layers is huge,
And there are contact resistances between thin layer, so that battery integrally has anisotropic thermal characteristic, such as cylindrical battery in axis
It is radial to being typically much deeper than with circumferential thermal coefficient, and rectangular cell thermal conductivity one in the vertical direction of multiple thin layers
As be much smaller than other both directions, since the anisotropic measurement for existing for battery thermal conductivity brings certain difficulty.
The measurement common method of thermal conductivity has flicker method, laser reflecting method and plate heat resource method at present.And flicker method and swash
Reflection method is restricted to the size of measurement sample, and diameter is generally required to be less than 3cm, and thickness is less than 4cm, existing power battery
Size is generally higher than battery size required by flicker method and laser reflecting method, on the other hand due to the limit of battery itself structure
System, it is impossible to take out a part and go to measure as sample, it is necessary to as a whole, so can only generally select plate heat source
Method.For the principle of plate heat resource method as shown in Figure 1, measuring the temperature on cold plate, sample boundaries and hot plate interface respectively, hot-fluid is available
Heating power is obtained divided by hot plate area, and sample thermal conductivity can be further acquired according to Fourier Heat Conduction law.
From above-mentioned technical proposal it is found that when measuring the thermal conductivity of a battery, due to thermally conductive on tri- directions x, y and z
Rate is different, and the area in three directions is also inconsistent, results in measure three times, and to match every time and battery face
The consistent hot plate of product, so that measurement cell thermal conductivity becomes considerably complicated and process is cumbersome, in addition, even if in hot plate and sample
Surrounding adds heat-barrier material, and there is also the leakage of the generations such as air conduction heat, so that measurement result is generally less than actual value.
The method of SPECIFIC HEAT CAPACITY often uses PULSE HEATING under differential scanning calorimetry (DSC) and vacuum insulation environment to measure ratio
Thermal capacitance, but both methods is suitable for the sample of small size, is not suitable for large-sized power battery.
By investigating for a long time, larger block specific heat capacity and thermal conductivity can be measured size simultaneously by also failing to discovery at present
Equipment.
Summary of the invention
(1) technical problems to be solved
According to temperature measuring device provided by the utility model, the above technical problem is at least solved.
(2) technical solution
Present disclose provides a kind of temperature measuring devices, comprising: vacuum tank 11；Radiant heating case 13 is located at vacuum tank 11
In, 13 outer surface of radiant heating case is equipped with electric heating wire, and object under test 3 is placed in 13 center of radiant heating case；Power supply 21 is used
In heating radiation heater box 13；Temperature data acquisition device 23, including multiple thermocouples, wherein a part in multiple thermocouples
Another part in each surface of object under test 3, multiple thermocouples is set to the surface of radiant heating case 13.
Optionally, radiation protection diaphragm 12 is equipped between vacuum tank 11 and radiant heating case 13, which is table
Open foraminate cabinet in face.
Optionally, the inner wall of radiant heating case 13 is coated with radiativity coating.
Optionally, aperture is provided on radiant heating case 13.
Optionally, the inner wall of 13 outside wall surface of radiant heating case and vacuum tank 11 is coated with antiradiation coating or stickup
Antiradiation film.
Optionally, radiant heating case 13 with a thickness of 1~5mm.
Optionally, further includes: vacuum pump 24, for extracting the air in vacuum tank 11；Vacuum detector 22, for detecting
The vacuum degree of vacuum tank 11.
Optionally, radiant heating case 13 uses aluminium alloy or copper.
Optionally, the shape of radiant heating case 13 is identical as object under test 3.
Optionally, the inner surface and the outer surface of radiation protection diaphragm 12 is coated with antiradiation coating or stickup antiradiation is thin
Film.
(3) beneficial effect
By the temperature measuring device in the utility model, at least up to following technical effect:
1, by the present apparatus, the multidirectional thermal conductivity of object under test can be disposably measured, avoids the prior art every
The trouble of test platform is individually arranged in a direction.
2, by extracting air in vacuum tank 11, reduces and leak heat loss caused by air contact, reduce air and cause
Measurement error.
3, by avoiding smearing high reflectance coating in radiant heating case 13 and vacuum tank 11 or pasting high reflectivity film, into
One step reduces the radiation heat loss between radiant heating case 13 and vacuum tank 11.
4, it is not necessarily to punch on object under test using the present apparatus, without damaging object under test.
Detailed description of the invention
Fig. 1 diagrammatically illustrates plate temperature measuring equipment schematic diagram in the prior art in the embodiment of the present disclosure.
Fig. 2 diagrammatically illustrates the temperature measuring device schematic diagram in the embodiment of the present disclosure.
Fig. 3 diagrammatically illustrates the thermocouple arrangement schematic diagram in the embodiment of the present disclosure.
Fig. 4 diagrammatically illustrates the coordinate diagram when measurement object under test temperature in the embodiment of the present disclosure.
Fig. 5 diagrammatically illustrates the measurement method of the specific heat capacity in the embodiment of the present disclosure.
Fig. 6 diagrammatically illustrates the first measurement method of the thermal conductivity in the embodiment of the present disclosure.
Fig. 7 diagrammatically illustrates second of measurement method of the thermal conductivity in the embodiment of the present disclosure.
Specific embodiment
A kind of temperature measuring device, for measuring the temperature of object under test 3, which includes: vacuum tank 11；
Radiant heating case 13 is located in the vacuum tank 11, and 13 outer surface of radiant heating case is equipped with electric heating wire, described to be measured
Object 3 is placed in 13 center of radiant heating case；Power supply 21, for heating the radiant heating case 13；Temperature data acquisition device
23, including multiple thermocouples, wherein a part in the multiple thermocouple is set to each surface of the object under test 3, institute
State the surface that another part in multiple thermocouples is set to the radiant heating case 13.
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to attached drawing, the utility model is further described.
Disclosure some embodiments will be done referring to appended attached drawing in rear and more comprehensively describe to property, some of but not complete
The embodiment in portion will be shown.In fact, the various embodiments of the disclosure can there are many different forms to realize, without that should be solved
It is interpreted as being limited to embodiments set forth herein；Relatively, these embodiments are provided so that the disclosure meets applicable legal requirement.
Fig. 2 diagrammatically illustrates the schematic diagram of the temperature measuring device of the embodiment of the present disclosure, as shown in Fig. 2, the temperature is surveyed
Amount device specifically includes as follows.
Vacuum tank 11, the inner wall of the heating in vacuum case are coated with the coating of one layer of high reflectance or paste reflective film, such as
Aluminium foil etc., and the vacuum tank 11 is closed case, can keep certain vacuum degree, reduces heat loss caused by air.
Radiant heating case 13 is located in vacuum tank 11, and outer wall is also coated with the coating or viscous of one layer of high reflectance
Reflective film, such as aluminium foil are pasted, reduces the radiation heat transfer of radiant heating case 13 and vacuum tank 11, and on the radiant heating case 13
Be provided with aperture, for being connected with each other the space in radiant heating case 13 and vacuum tank 11 so that radiant heating case 13 with
Vacuum tank 11 can keep identical vacuum degree.13 outer surface of radiant heating case is uniformly provided with electric heating wire, to make heating point
Cloth is uniform, the high conductivity materials such as the preferred aluminium alloy of general radiation heater box 13 or copper, thickness preferably 1~5mm.The radiation adds
The inner wall of hot tank 13 is coated with the coating of high radiant rate, such as pitch-dark.Object under test 3 is placed in radiant heating case when needing to measure
In 13, which also needs to coat the coating of high radiant rate identical with radiant heating case 13, with Enhanced Radiation Reduced Blast
Radiation heat transfer between heater box 13 and object under test 3.Object under test 3 is placed in 13 center of radiant heating case, which adds
The shape of hot tank 13 is identical with object under test 3 as far as possible, as far as possible each face of guarantee radiant heating case 13 to the every of object under test 3
A face is equidistant, since object under test 3 and radiant heating case 13 keep high vacuum degree as far as possible, so that electrothermal wire heating produces
Raw heat is in addition to heating radiation heater box 13 itself all for radiant heating object under test 3.
For the heat exchange being further reduced between radiant heating case 13 and vacuum tank 11, in vacuum tank 11 and radiant heating case
Radiation protection diaphragm 12 is equipped between 13, which is that foraminate cabinet is opened on surface, so that vacuum tank 11, radiation add
Space between hot tank 13 and radiation protection diaphragm 12 is connected with each other, and then keeps identical vacuum degree.The radiation protection diaphragm simultaneously
12 the inner surface and the outer surface is coated with antiradiation coating or pastes antiradiation film.
Power supply 21, for heating the electric heating wire in the radiant heating case 13, and then the radiant heating case 13 can be with
Radiation heat transfer is carried out between object under test 3.
Temperature data acquisition device 23, including multiple thermocouples (as shown in Figure 2), the number of thermocouple is than 3 table of object under test
The number in face is at least one more, wherein a part in multiple thermocouples is set to each surface of object under test 3, multiple thermoelectricity
Another part in idol is set to the surface of radiant heating case 13.13 table of time recording object under test 3 and radiant heating case when measurement
The temperature in face, and then obtain the curve that the temperature of object under test 3 and radiant heating case 13 changes over time.
Vacuum pump 24 makes to guarantee high vacuum degree in vacuum tank 11 as far as possible for extracting the air inside vacuum tank 11.
Vacuum detector 22, Probe arrangement in vacuum tank 11 for detecting vacuum degree in vacuum tank 11, when being lower than
When a certain vacuum degree, starting vacuum pump extracts air, makes to be always maintained at certain vacuum degree in vacuum tank 11.
Now by taking object under test 3 is a larger-size cuboid lithium ion battery as an example, the utility model is discussed in detail
Device and measurement method based on the utility model device specific heat capacity and thermal conductivity, the size of the lithium ion battery is about 380 ×
The averag density of 150 × 60mm, battery can be calculated according to quality and volume, therefore select having a size of 500 × 300 ×
The radiant heating case 13 of 200mm, herein selective radiation heater box 13 with a thickness of 1mm, material selects red copper.Vacuum pump 24 and true
Vacuum degree in vacuum tank 11 is maintained 1~100Pa by empty check device 22.Distinguish at six outer surfaces center of lithium ion battery
It arranges six thermocouples 41~46 (as shown in Figure 3), at least one thermocouple 47 is evenly arranged on radiant heating case 13, in spoke
The data for penetrating the much more uniform acquisition of the thermocouple 47 arranged in heater box 13 are more accurate, in this example for convenience of explanation, to arrange 1
For a thermocouple 47,23 moment of temperature data acquisition device monitors the temperature of thermocouple on radiant heating case 13 and lithium ion battery
It changes with time, obtains temperature-time change curve.
The measuring process of specific heat capacity is as shown in figure 5, specific as follows:
Step 1: coating radioactive material on 3 surface of object under test, which is arranged in temperature measuring device
In radiant heating case 13, and in the surface layout thermocouple of object under test 3 and radiant heating case 13, temperature data acquisition device 23 is adopted
Collect the equilibrium temperature T of object under test 3 and radiant heating case 130。
The coating that object under test 3 will apply one layer of high radiant rate on surface before being put into utility model device is for example pitch-dark etc.,
It is then placed into the center of the radiant heating case 13 of utility model device, and is placed in each centre of surface of lithium ion battery
One thermocouple, while in one thermocouple of the surface layout of radiant heating case 13, i.e., 7 thermoelectricity are arranged in the present embodiment
It is even.It is not necessarily to heating radiation heater box 13, when 7 electric thermo-couple temperature difference very littles, radiant heating case 13 and lithium-ion electric first
Temperature reaches balance between pond, writes down initial temperature T when balance0。
Step 2: heating radiation heater box 13, heating voltage and electric current are respectively U and I, stop heating after reaching temperature T.
Open external power supply heating radiation heater box 13 heater strip, and by the power setting of heater strip be 10~
1000MW, heating time are set as 1~30min, record heating voltage U and electric current I at this time, detect battery surface temperature,
When reaching certain temperature T1When stop heating, infuse T1Not settable excessively high, the excessively high danger for having explosion of temperature is write down at this time
Final temperature T1。
Step 3: radiant heating case 13 and object under test (3) temperature being waited to reach equilibrium temperature T2。
When a certain surface of battery reaches temperature T1When stop heating, temperature measured by 7 thermocouples is not at this time
Together, it waits for a period of time, keeps each surface temperature of lithium ion battery uniform, the difference between 7 thermocouple measured temperatures is less than
Certain numerical value (is taken in this example less than 0.1 DEG C), is write down and is obtained mean temperature T measured by thermocouple at this time2。
Step 4: calculate the object under test specific heat capacity:
Cpb=Qpb/mpb(T2-T0)；
Qpb=Q-Qcu；
Qcu=mcuCcu(T2-T0)；
Q=UI；
Wherein, CpbAnd CcuThe respectively specific heat capacity of lithium ion battery and radiant heating case 13, radiant heating case 13 are copper,
Therefore CcuIt is known that mpbAnd mcuThe respectively quality of lithium ion battery and radiant heating case can be obtained by weighing, therefore Qcu?
Know, heating voltage U and electric current I are obtained in step 2, therefore total heating amount Q can be calculated, therefore by counting above
Calculate you can get it unknown quantity Cpb。
Measure lithium ion battery thermal conductivity when fixed temperature radiation method can be used or determine heat flow density radiation method two ways into
Row measurement, is now specifically introduced two kinds of implementations.
Fixed temperature radiation method surveys the thermal conductivity of lithium ion battery, as shown in Figure 6, the method is as follows:
S0: radioactive material identical with 13 inner wall of radiant heating case is coated in the outer surface of object under test 3, is put
It is placed in the center of radiant heating case 13, and in the surface layout thermocouple of the object under test 3 and radiant heating case 13.
S1: heating radiation heater box 13 makes its temperature be rapidly increased to a certain fixed temperature, and maintains the fixed temperature not
Become.
A PID controller is connected on the circuit of 21 power supplys and the heater strip of radiant heating case 13.Heat spoke rapidly first
Penetrating heater box 13 makes it be heated to a certain fixed temperature T ' between 50~150 DEG C, later proportion of utilization-Integrated Derivative (PID)
The temperature of controller control radiant heating case 13 remains unchanged.
S2: the temperature of each thermocouple of 23 time recording of temperature data acquisition device obtains the temperature of each thermocouple at any time
Between the curve that changes.
Using temperature data acquisition device 23 detect 7 thermocouples temperature at any time, time interval takes 5~20S, obtains
Temperature-time change curve.
S3: the object under test 3 is calculated according to the following formula in the λ in the direction x, y and zx、λyAnd λz:
Because 13 temperature of radiant heating case remains unchanged at this time, its external heat radiation is constant for battery, this
When can only using lithium ion battery as research object, and due to utility model device be vacuum plant, known to radiance
As pitch-dark radiance, according to this special fence-Boltzmann law:
Q=ε σ A (T '4-T4)
Wherein, Q is the radiant heat transfer amount on certain surface, and T ' is the steady temperature of radiant heating case 13, and T is battery surface
Temperature, ε are the pitch-dark radiance of lithium ion battery and 13 surface of radiant heating case, and σ is Stefan constant, and A is lithium ion battery
The area on corresponding surface.
As shown in figure 4, lithium ion battery is located in the region of-a < x < a ,-b < y < b ,-c < z < c, if three directions
Thermal conductivity be λx、λy、λz, then the heat conduction equation of lithium ion battery are as follows:
Wherein, ρ is cell density, can be calculated, CpIt, can be by obtaining above for the battery specific heat capacity.
The equation of the derivative is solved using the separation of variable, if:
T=φ1(x, a, h) φ2(y, b, h) φ3(z, c, h)+T0
The analytic solutions of the progression form of equation can be acquired:
Wherein, T0It is battery initial temperature, hx、hy、hzIt is the parameter being temperature dependent on the boundary of three directions respectively, with x
For direction, h hereinxIs defined as:
Because in lithium ion battery part, radiation thermal conduction to inside lithium ion cell, therefore in this radiation boundary condition
Under:
αnIt is equation α tan α a=hxPositive root；
κx、κy、κzThermal diffusivity on respectively three directions, it may be assumed that
Wherein t is time, unit s.
Therefore, when 13 temperature of radiant heating case determines, lithium ion battery surface center temperature-time graph can
It is acquired by substituting into analytic solutions.
S4: the direction x, the y or z thermal conductivity λ in adjustment S3x、λyAnd λz, when the direction x, the y or z temperature that S3 is obtained at any time
Change curve and the temperature in S2 change over time curve it is consistent when, thermal conductivity corresponding to S3 is x, y of object under test 3
Or the direction z thermal conductivity.
The temperature-time curve that control experiment measures and the temperature-time curve being calculated, if calculated result obtains
Temperature-time curve slope is larger in a direction, then increases thermal coefficient in calculating process, on the contrary reduce, until calculate and
The measured temperature curve of experiment is almost consistent, then the thermal coefficient set in calculating process at this time is the thermally conductive of actual battery
Rate.
Using the method, it is only necessary to measure the temperature on radiant heating case 13 and lithium ion battery, add without measurement
The measurement of heat, temperature is relatively easy, improves accuracy for general method.In addition, being measured using this method
Influence of the initial temperature of lithium ion battery to measurement result is little in the process, in constant temperature process not to external radiation leakage heat
It will lead to error, therefore this kind of fixed warm radiation method is the preferred forms for surveying battery thermal conductivity.
Determine the thermal conductivity that heat flow density radiation method surveys lithium ion battery, as shown in Figure 7, the method is as follows:
S0 ': radioactive material identical with 13 inner wall of radiant heating case is coated in the outer surface of object under test 3, and will
Its center for being placed in radiant heating case 13, and in the surface layout thermocouple of object under test 3 and radiant heating case 13.
S1 ': continuous heating radiant heating case 13 keeps constant the heat flow density on its each face.
Continue with constant power supply and electric current heating radiation heater box 13, the unit heating amount and area of radiant heating case 13
It is constant, therefore constant heat flow density can be obtained.
S2 ': the temperature of each thermocouple of time recording obtains the temperature-time change curve of each thermocouple.
Radiant heating case 13 and 3 radiation heat transfer of object under test, the temperature of each thermocouple of temperature data acquisition device time recording
Degree, obtains the temperature-time change curve on the corresponding each surface of each thermocouple.
S3 ': measuring targets 3, radiant heating case 13 and region between the two carry out discretization numerical solution, discretization
The process of solution obtains different temperature-time change curves by the way that different thermal conductivity values is arranged.
Lithium ion battery, radiant heating case 13 and region between the two are subjected to the discrete solution of grid.Due to determining hot-fluid
Under the conditions of boundary condition on battery be unknown, therefore at this time to radiant heating case, lithium ion battery and area between the two
Between integrally account for, according to computation model is actually established, each mask body on radiant heating cabinet is acquired by heating power
Heat flow density, then the boundary condition on radiation box completely determine, the radiance on box house face and battery surface is set as
Height radiates pitch-dark radiance, and temperature is set as coupled boundary condition.By using Fluent, CFX, Nastran, Abaqus or
The softwares such as Comsol carry out whole progress discretization numerical solution to radiation box and battery, to obtain battery surface central point temperature
Time graph is spent, obtains different temperature time curves by the way that different thermal conductivitys is arranged during solution.
S4 ': when the temperature-time change curve that S3 ' is obtained is consistent with the temperature-time change curve in S2 ', S3 ' institute
Corresponding thermal conductivity is the thermal conductivity of object under test 3.
The lithium ion battery all directions thermal conductivity in calculating process is adjusted, until the electricity obtained according to the thermal conductivity of setting
Pond temperature-time curve and utility model device measured value are close, then it is assumed that the thermal conductivity for calculating setting be survey it is thermally conductive
Rate.
In conclusion can disposably measure the multidirectional thermal conductivity of object under test using utility model device, avoid
The prior art in each direction individually arranges the trouble of test platform；By extracting air in vacuum tank 11, reduce air
Heat loss is leaked caused by contact, reduces measurement error caused by air；By being avoided in radiant heating case 13 and vacuum tank 11
High reflectance coating or patch high reflectivity film are smeared, the radiation between radiant heating case 13 and vacuum tank 11 is further reduced
Heat loss；It is not necessarily to punch on object under test 3 using the present apparatus, without damaging object under test.
Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects
Step is described in detail, it should be understood that being not limited to this foregoing is merely specific embodiment of the utility model
Utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap
Containing being within the protection scope of the utility model.
Claims (10)
1. a kind of temperature measuring device, for measuring the temperature on object under test (3) surface, which is characterized in that the temperature measurement
Device includes:
Vacuum tank (11)；
Radiant heating case (13) is located in the vacuum tank (11), and radiant heating case (13) outer surface is equipped with electric heating wire,
The object under test (3) is placed in radiant heating case (13) center；
Power supply (21), for heating the radiant heating case (13)；
Temperature data acquisition device (23), including multiple thermocouples, wherein a part in the multiple thermocouple be set to it is described to
Each surface of object (3) is surveyed, another part in the multiple thermocouple is set to the surface of the radiant heating case (13).
2. temperature measuring device according to claim 1, which is characterized in that the vacuum tank (11) and radiant heating case
(13) radiation protection diaphragm (12) are equipped between, which is that foraminate cabinet is opened on surface.
3. temperature measuring device according to claim 1, which is characterized in that the inner wall of the radiant heating case (13) is coated with
Radiativity coating.
4. temperature measuring device according to claim 1, which is characterized in that be provided on the radiant heating case (13) small
Hole.
5. temperature measuring device according to claim 1, which is characterized in that radiant heating case (13) outside wall surface and
The inner wall of vacuum tank (11) is coated with antiradiation coating or pastes antiradiation film.
6. temperature measuring device according to claim 1, which is characterized in that the radiant heating case (13) with a thickness of 1
~5mm.
7. temperature measuring device according to claim 1, which is characterized in that further include:
Vacuum pump (24), for extracting the air in vacuum tank (11)；
Vacuum detector (22), for detecting the vacuum degree of the vacuum tank (11).
8. temperature measuring device according to claim 1, which is characterized in that the radiant heating case (13) uses aluminium alloy
Or copper.
9. temperature measuring device according to claim 1, which is characterized in that the shape of the radiant heating case (13) with to
It is identical to survey object (3).
10. temperature measuring device according to claim 2, which is characterized in that the inner surface of the radiation protection diaphragm (12)
It is coated with antiradiation coating with outer surface or pastes antiradiation film.
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|---|---|---|---|
| CN201821474548.XU CN208721269U (en) | 2018-09-10 | 2018-09-10 | A kind of temperature measuring device |
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|---|---|---|---|
| CN201821474548.XU CN208721269U (en) | 2018-09-10 | 2018-09-10 | A kind of temperature measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775971A (en) * | 2018-09-10 | 2018-11-09 | 中国科学院工程热物理研究所 | A kind of measurement method of temperature measuring equipment and specific heat capacity and thermal conductivity |
| CN113933343A (en) * | 2021-09-16 | 2022-01-14 | 中国科学院工程热物理研究所 | Experimental device for strengthen boiling heat transfer |
-
2018
- 2018-09-10 CN CN201821474548.XU patent/CN208721269U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775971A (en) * | 2018-09-10 | 2018-11-09 | 中国科学院工程热物理研究所 | A kind of measurement method of temperature measuring equipment and specific heat capacity and thermal conductivity |
| CN113933343A (en) * | 2021-09-16 | 2022-01-14 | 中国科学院工程热物理研究所 | Experimental device for strengthen boiling heat transfer |
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