CN206096004U - Heat conductivity measuring device of granule under state is piled up to difference - Google Patents
Heat conductivity measuring device of granule under state is piled up to difference Download PDFInfo
- Publication number
- CN206096004U CN206096004U CN201620909692.6U CN201620909692U CN206096004U CN 206096004 U CN206096004 U CN 206096004U CN 201620909692 U CN201620909692 U CN 201620909692U CN 206096004 U CN206096004 U CN 206096004U
- Authority
- CN
- China
- Prior art keywords
- granule
- pressure
- pressing plate
- heater
- base
- 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 - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model provides a heat conductivity measuring device of granule under state is piled up to difference, base and shell constitution heat conductivity measuring device's casing, the clamp plate double -screw bolt is fixed on the base for a support that applys when piling up pressure requiredly is provided, clamp plate nut and the cooperation of clamp plate double -screw bolt for apply and pile up pressure, the clamp plate is used for exerting pressure in piling up the granule in the holder, pressure sensor is used for measuring pressing plate to act on the gross pressure of its below, primary heater is circular structure, auxiliary heater be with the endocentric doughnut -shaped structure of primary heater, heater and auxiliary heater place at the granule top, the doughnut -shaped structure of holder for having a take the altitude, its ring inside is used for piling up the granule, the cooler is placed on the base for the temperature of granule bottom is piled up in control. The utility model discloses the different condition of piling up of granule can be simulated effectively, the end face contaction thermal resistance has been eliminated.
Description
Technical field
This utility model belongs to Measurement in Thermophysics technical field, granule under more particularly to a kind of different stacking states
Thermal conductivity measurement apparatus.
Background technology
In material conducts heat rate fields of measurement, there are now many method of testings.Modal method has protection hot plate
The methods such as method, heat-pole method, concentric tube, homocentric sphere.These methods exist certain for the measurement of granule thermal conductivity, all
Drawback.For example, hot plate method is protected to eliminate the impact of two ends thermal contact resistance, it is impossible to simulate the heat conduction under the conditions of different atmosphere
Rate；Heat-pole method, concentric circular tube method and concentric ball cannot simulate the different thermal conductivitys piled up under pressure condition, it is impossible to eliminate end face
The impact of thermal contact resistance.
The content of the invention
The utility model proposes under a kind of different stacking states granule thermal conductivity measurement apparatus, can effective simulation
The different accumulation condition of granule, eliminates end contact thermal resistance.
In order to solve above-mentioned technical problem, this utility model provides a kind of thermal conductivity of granule under different stacking states and surveys
Amount device, it is characterised in that including base, shell, pressing plate stud, panel nut, pressing plate, pressure transducer, primary heater, auxiliary
Help heater, cooler, retainer；The base and shell constitute the housing of the thermal conductivity measurement apparatus；The pressing plate spiral shell
Post is fixed on the base, required support when applying to pile up pressure for providing；The panel nut is matched somebody with somebody with pressing plate stud
Close, for applying to pile up pressure；The pressing plate is used for the granule for applying pressure to be deposited in retainer；The pressure is passed
Sensor acts on gross pressure below for measuring pressure plate, between pressing plate and primary heater；The primary heater is circle
Shape structure, the auxiliary heater are the cirque structure concentric with the primary heater；Heater and auxiliary heater are placed
At the top of granule；The retainer is the cirque structure with certain altitude, is used for packed particle body inside its annulus；It is cold
But device is placed on base, for controlling the temperature of packed particle body bottom；Primary heater lower surface and cooler it is upper
Surface, radially distributed some thermocouple temperature measurement points.
Further, the pressing plate is the hardened structure of crotch shape, and its bifurcated is corresponding with multiple pressing plate studs.
Further, via is provided with the base.
Further, including multiple retainers, the bottom and top of retainer are respectively arranged with negative and positive flange, for multiple guarantors
Hold when frame is overlapped up and down and be firmly mutually stitched together；The flange of the retainer of bottom is coordinated with the outer rim of cooler.
Further, using step it is：
Step one, adjusts the stack height of retainer, the landfill granule into retainer, after landfill is finished and is paved,
Primary heater is placed directly over granule, the auxiliary heater on set outside primary heater；The placement force above the primary heater
Sensor simultaneously covers pressing plate；
Step 2, rotary pressure plate nut control the size of platen pressure, by pressure transducer measured pressure value, while
The height of measurement granule accumulation body；
Step 3, shell on cover adjust the atmosphere inside measurement apparatus；
Step 4, opens cooler, primary heater and auxiliary heater, when the thermocouple on cooler and primary heater is surveyed
When the temperature of warm spot is consistent with the temperature of setting operating mode, the operating power of cooler, primary heater and auxiliary heater is recorded；
Step 5, calculates thermal resistance according to the temperature and operating power；
Step 6, adjusts the volume of granule accumulation body by the quantity for increasing or reducing retainer, then repeatedly walks
Rapid one to five；Step 6 is repeated several times, the height value and thermal resistance value of multigroup amount granule accumulation body is obtained；
Step 7, obtains two using the height value of multigroup amount granule accumulation body described in least square fitting and thermal resistance value
The thermal resistance value of individual contact end face；
Step 8, by control panel nut compression degree, change pressure applied size, repeat step one to
Seven, the thermal resistance value of different unit lengths is obtained, then the relation obtained between pressure size and thermal resistance that carries out curve fitting.
Compared with prior art, its remarkable advantage is this utility model：
1st, this utility model heater adopts concentric double-heater structure, and outer ring heater is protection heater,
The heat for making up radial direction scatters and disappears.During measurement, by the heating power for adjusting outer ring so that inner circle thermograde radially is enough
It is little, you can to think that no heat scatters and disappears.
2nd, for the volume and weight of control and measure device, while convenient dress filling detected materials, employ multistage holding
Frame structure, rather than detected materials are arranged symmetrically in hot plate both sides.
3rd, the shell of sealing can ensure that the gas or vacuum environment of various needs, and device for exerting can controllably provide one
Fixed pressure, both devices being capable of the effective different accumulation conditions of simulation granule.
Description of the drawings
Fig. 1 is the structural representation of the thermal conductivity measurement apparatus of granule under different stacking states.
Fig. 2 is the thermocouple distribution schematic diagram on primary heater and cooler.
Fig. 3 is to carry out least square fitting result schematic diagram when thermal conductivity is measured using this utility model.
Specific embodiment
It is easy to understand, according to the technical solution of the utility model, in the situation for not changing connotation of the present utility model
Under, one of ordinary skill in the art can imagine the thermal conductivity measurement dress of granule under this utility model difference stacking states
The numerous embodiments put.Therefore, detailed description below and accompanying drawing are only the examples to the technical solution of the utility model
Property explanation, and be not to be construed as whole of the present utility model or be considered as the restriction to technical solutions of the utility model or restriction.
With reference to accompanying drawing, under this utility model difference stacking states, the thermal conductivity measurement apparatus of granule are included such as lower component：
Shell 1, shell 1 are the shell structure of one end closing, for outside gas is intercepted in thermal conductivity measurement process
Interference of the body to measurement result.
Pressing plate stud 2, pressing plate stud 2 are a long threaded rod, are fixed on base 8, apply to pile up needed for pressure for providing
Support.
Panel nut 3, is coordinated with pressing plate stud, for applying to pile up pressure.
Pressing plate 4, is a crotch shape plate, for applying pressure to whole experimental section.
Auxiliary heater 5, a ring shaped heating mechanism concentric with primary heater, for provided auxiliary hot-fluid, it is ensured that main
The hot-fluid flow direction of heater is parallel with 6 upper-lower axis of detected materials.
Detected materials 6, are the granule for needing to measure thermal conductivity, and it is cylindric which is piled up in measurement apparatus, is placed in master
In the middle of heater 10 and cooler, upper and lower surface is close to heater and cooler respectively.
Cooler 7, is circular heat exchanger, and its inside leads to cooling water or cooling oil.The temperature of control detected materials bottom, with
Just measure the material conducts heat rate in different temperatures interval.
Base 8, a circular bottom plate, to support whole experimental provision, while closing space is constituted together with shell 1,
Prevent inside and outside gas exchange.Via is provided with base 8, for measuring following for the extraction of line, the connection of air pump and coolant
Ring.
Retainer 9, retainer 9 are the cirque structure with certain altitude, are used for piling up detected materials inside its annulus
6.Negative and positive flange is arranged respectively at the bottom and top of retainer 9, firmly mutually can spell when overlapping about 9 for multiple retainers
It is connected together.During use, can according to detected materials 6 number come determine retainer 9 overlap number, so as in multiple holdings
Frame 9 is internally formed the accumulation capacity of respective volume, for preventing detected materials to be scattered to surrounding.The guard circle flange of bottom and
Cooler outer rim coordinates, and is seated on cooler.
Primary heater 10, a circular heater, in experiment positioned at detected materials top, auxiliary heater it is interior
Side, to provide main heating power measured in experiment.
Pressure transducer 11, circular measurement apparatus, between pressing plate 4 and primary heater 10, makees for measuring pressure plate 4
For the gross pressure of lower section.
In the upper surface of the lower surface and cooler 7 of primary heater 10, radially distributed some thermocouple temperature measurement points are used for
The temperature of measurement primary heater 10 and cooler 7.
Under this utility model difference stacking states, the use process of the thermal conductivity measurement apparatus of granule is as follows：
1st, the volume of the granular materialss of thermal conductivity is measured as needed, is adjusted the stack height of retainer 9, is allowed to be slightly longer than
The ulking thickness of candidate particles material.
2nd, granular materialss are filled out into retainer 9, heap is complete pave after, primary heater 10 is placed directly over the granular materialss,
Auxiliary heater 5 is put outside primary heater 10.
3rd, square placement force sensor 11 cover pressing plate 4 on the heaters, by the panel nut for screwing 4 top of pressing plate
3, stressed size is applied in control, and pressure passes through 11 output display of pressure transducer on computers, while passing through measuring pressure plate 4
Overhead height, calculates the thickness L1 of material to be measured after compressing.
4th, shell 1 on cover, by the atmosphere inside vacuum pump or gas cylinder control and measure device.
5th, start coldplate circulating pump, allow cooling water to be passed through cooler 7, then open main and auxiliary heater power supply carry out plus
Heat.
6th, by the power of adjustment primary heater, auxiliary heater and cooling pump so that along radially-arranged thermoelectricity
The temperature of even point for measuring temperature a, b, c, d, e is consistent with the temperature of setting operating mode.As shown in Fig. 2 stain is thermocouple point position,
Black line is measurement wire casing.
7th, after adjustment is finished, waiting temperature is stable, records the power of temperature data and corresponding heater and cooling the, with
This tries to achieve thermal resistance R1 now.
8th, by increase or reduce retainer 9 quantity, adjust candidate particles body volume, then repeat step 1 to
7, obtain L2, L3 ... and R2, R3 ....
9th, as shown in figure 3, with least square fitting L1, L2, L3 ... and R1, R2, R3 ..., in fitting result, directly
Thermal resistance of the slope of line for unit length granule cylinder, is two thermal contact resistances for contacting end face with the intersection point of R axles.
10th, by controlling the compression degree of panel nut, change pressure applied size, repeat 1 to 9 process, can be with
Different unit length thermal resistances are obtained, then is carried out curve fitting in an appropriate manner, can just be obtained between pressure size and thermal resistance
Relation.
Claims (4)
1. under a kind of different stacking states granule thermal conductivity measurement apparatus, it is characterised in that including base (8), shell
(1), pressing plate stud (2), panel nut (3), pressing plate (4), pressure transducer (11), primary heater (10), auxiliary heater
(5), cooler (7), retainer (9)；
The base (8) and shell (1) constitute the housing of the thermal conductivity measurement apparatus；
The pressing plate stud (2) is fixed on the base (8), required support when applying to pile up pressure for providing；
The panel nut (3) is coordinated with pressing plate stud (2), for applying to pile up pressure；
The pressing plate (4) is for the granule that applies pressure to be deposited in retainer (9)；
The pressure transducer (11) acts on gross pressure below for measuring pressure plate (4), positioned at pressing plate (4) and main heating
Between device (10)；
The primary heater (10) is circular configuration, and the auxiliary heater (5) is the circle concentric with the primary heater (10)
Loop configuration；Primary heater (10) and auxiliary heater (5) are placed at the top of granule；
The retainer (9) is the cirque structure with certain altitude, is used for packed particle body inside its annulus；
Cooler (7) is placed on base (8), for controlling the temperature of packed particle body bottom；
In the upper surface of the lower surface and cooler (7) of primary heater (10), radially distributed some thermocouple temperature measurement points.
2. thermal conductivity measurement apparatus as claimed in claim 1, it is characterised in that the pressing plate (4) is the hardened structure of crotch shape, its point
Fork is corresponding with multiple pressing plate studs (2).
3. thermal conductivity measurement apparatus as claimed in claim 1, it is characterised in that be provided with via on the base (8).
4. thermal conductivity measurement apparatus as claimed in claim 1, it is characterised in that including multiple retainers (9), retainer (9)
Bottom and top are respectively arranged with negative and positive flange, are firmly mutually stitched together when overlapped for multiple retainers (9) up and down；
The flange of the retainer (9) of bottom is coordinated with the outer rim of cooler (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620909692.6U CN206096004U (en) | 2016-08-19 | 2016-08-19 | Heat conductivity measuring device of granule under state is piled up to difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620909692.6U CN206096004U (en) | 2016-08-19 | 2016-08-19 | Heat conductivity measuring device of granule under state is piled up to difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206096004U true CN206096004U (en) | 2017-04-12 |
Family
ID=58469586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620909692.6U Expired - Fee Related CN206096004U (en) | 2016-08-19 | 2016-08-19 | Heat conductivity measuring device of granule under state is piled up to difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206096004U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093113A (en) * | 2016-08-19 | 2016-11-09 | 南京理工大学连云港研究院 | The thermal conductivity measurement apparatus of granule under a kind of different stacking states |
-
2016
- 2016-08-19 CN CN201620909692.6U patent/CN206096004U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093113A (en) * | 2016-08-19 | 2016-11-09 | 南京理工大学连云港研究院 | The thermal conductivity measurement apparatus of granule under a kind of different stacking states |
| CN106093113B (en) * | 2016-08-19 | 2019-04-05 | 南京理工大学连云港研究院 | It is a kind of difference stacking states under granule thermal conductivity measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104122381B (en) | A kind of vacuum high/low temperature lunar soil environment simulator and analogy method thereof | |
| Cheng et al. | Thermal performance analysis of a cascaded cold storage unit using multiple PCMs | |
| Ling et al. | Experimental and numerical investigation of the application of phase change materials in a simulative power batteries thermal management system | |
| CN102954726B (en) | Composite phase-change heat storage device | |
| CN103616410B (en) | The chemical solvent absorption of a kind of gas and desorbing reaction heat measurement apparatus | |
| CN103713007B (en) | The softening drippage point of sintering deposit experimental apparatus for testing | |
| CN104897554B (en) | Hypotonic rock gas pervasion test device and method of testing under vapor heat mechanics coupling effect | |
| CN102721452B (en) | Online calibrating device for high-temperature liquid metal flow | |
| Soliman et al. | Numerical simulation and experimental verification of constrained melting of phase change material in cylindrical enclosure subjected to a constant heat flux | |
| Reddy et al. | Experimental studies on phase change material-based thermal energy storage system for solar water heating applications | |
| CN106093113A (en) | The thermal conductivity measurement apparatus of granule under a kind of different stacking states | |
| CN103954648B (en) | A kind of hemisphere face thermal source steady state method heat conductivity measuring device and method | |
| Li et al. | Experimental study on the thermal performance of a new type of thermal energy storage based on flat micro-heat pipe array | |
| CN106841297A (en) | A kind of hot physical property testing device of multifunctional solid material and method | |
| CN107702758A (en) | One kind is based on the large-scale tank Residual Propellant accurate measurement method of Capacity method | |
| Chai et al. | Performance study of a packed bed in a closed loop thermal energy storage system | |
| CN206096004U (en) | Heat conductivity measuring device of granule under state is piled up to difference | |
| CN207148022U (en) | A kind of coal body heat conductivity measuring device | |
| CN205483889U (en) | High ground temperature diversion tunnel country rock, lining cutting structural model test device | |
| Warkhade et al. | Experimental investigation of sensible thermal energy storage in small sized, different shaped concrete material packed bed | |
| Kiwan et al. | Experimental investigation of the thermal performance of a sand-basalt heat storage system for beam-down solar concentrators | |
| CN209167177U (en) | A kind of unstable state cylinder heat resource method temperature change effective thermal conductivity measurement device | |
| CN104596847B (en) | Soil consolidometer | |
| CN206330842U (en) | A kind of highway pavement asphalt performance test device | |
| US20100116061A1 (en) | Method and device for determining the gas pressure in evacuated bodies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20170819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |