CN201716277U - Heat conductivity measuring device and measuring system - Google Patents
Heat conductivity measuring device and measuring system Download PDFInfo
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- CN201716277U CN201716277U CN2010201087353U CN201020108735U CN201716277U CN 201716277 U CN201716277 U CN 201716277U CN 2010201087353 U CN2010201087353 U CN 2010201087353U CN 201020108735 U CN201020108735 U CN 201020108735U CN 201716277 U CN201716277 U CN 201716277U
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Abstract
The utility model relates to a heat conductivity measuring device which comprises a probe, a heating device, a thermocouple, a probe fixator and a sample container, wherein the heating device is externally arranged the surface of the probe and is suitable for heating a sample to be measured; the probe of the thermocouple is arranged on the outer surface of the probe so as to collect the temperature of the probe; the probe fixator is used for fixing the probe, and an external thread is formed on the lower surface of the probe fixator; and the sample container is used for containing the sample to be measured, and an internal thread matched with the external thread is formed at the bottom of the sample container so as to fix the probe fixator in the sample container. The heat conductivity measuring device can well fix the probe in the sample container without inclining or falling off easily, and can realize measurement at different temperatures. The utility model also discloses a heat conductivity measuring system provided with the heat conductivity measuring device, further comprising a DC stabilized power supply, a collecting device and a computer, wherein the DC stabilized power supply is connected with the heating device to cause the heating device to provide constant heating power; the collecting device is used for collecting the measured temperature of the thermocouple; and the computer is used for processing collected data.
Description
Technical field
The utility model relates to the thermophysical property measurement technical field, particularly relates to a kind of heat conductivity measuring device and has the thermal conductivity measurement system of this heat conductivity measuring device.
Background technology
Coefficient of heat conductivity has characterized the heat conductivility of material, is the important physical parameter of object, is related to the application of material in every field.Coefficient of heat conductivity as cold-producing medium is the requisite parameter foundation of refrigerant system design, and the test of rock-soil material coefficient of heat conductivity and theoretical research are the importances that ground source heat pump technology, underground cable dispel the heat, bury researchs such as hot oil pipeline temperature field, ground.
Thermoprobe method has obtained widespread use in the measurement of coefficient of heat conductivity at present.A kind of employing thermoprobe method heat conducting coefficient measuring device is disclosed among the Chinese patent ZL200810040253.6 that on Dec 10th, 2008 was announced.This device provides stable heating power by stabilized voltage supply, and thermopair imports temperature signal in the microprocessor system into then, and by microsystem handle, conversion and demonstration.This apparatus structure is simple, and it is convenient to measure, and can realize the measurement of liquid, solid, and measurement range is wider, but this device is not mentioned the measurement that can be implemented in the coefficient of heat conductivity under the different temperatures.
In addition, in the technical papers that the Zhao Hui of Shanghai Communications University loyalty etc. were delivered in 2007 03 phases of Shanghai Communications University's journal " the transient heat sonde method is measured zeolite compound adsorbent coefficient of heat conductivity ", apply constant voltage and heat inserting probe in the unlimited evenly sample, measure the slope of thermal probe temperature logarithm variation in time, in the hope of the coefficient of heat conductivity of measured sample.Adopt epoxide-resin glue that probe is sealed at both ends fixing during measurement.Thereby stationary probe well but epoxide-resin glue may come off easily.
Although Many researchers is all furtherd investigate the thermoprobe method heat conducting coefficient measuring device, often ignored the fixation problem of thermal probe in the existing measurement mechanism, and can't realize the measurement under the different temperatures.
The utility model content
The utility model is intended to solve at least one of technical matters that exists in the prior art.For this reason, a purpose of the present utility model heat conductivity measuring device that is to propose a kind of stationary probe well and can realizes measuring under the different temperatures.
Heat conductivity measuring device according to an embodiment of the present utility model comprises: probe; Heating arrangement, described heating arrangement are placed on described detecting probe surface and are suitable for testing sample is heated; Thermopair, the probe of described thermopair place the outside surface of described probe with the acquisition probe temperature; Probe holder, described probe holder are used for fixing described probe and described probe holder lower surface is formed with external thread; And the sample holder, described sample holder is used to hold testing sample, and the internal thread hole that its bottom formation matches with described external thread is fixed on probe holder in the described sample holder with realization.
According to heat conductivity measuring device of the present utility model, probe can be fixed on well in the sample holder and be difficult for tilting or come off, so that survey more accurately, and can realize measurement under the different temperatures.Further, the material that testing sample can go deep into for any probes such as solids such as powder or particulate material, liquid, measurement range is wide.
In addition, the heat conductivity measuring device according to an embodiment of the present utility model also has following additional technical feature:
Described heating arrangement is a heater strip, be wrapped in described probe outside surface after the described heater strip doubling equably, and the probe of described thermopair is fixed in the probe outside surface through described heater strip.
Described heat conductivity measuring device also further comprises the temperature regulating device of the environment temperature when being used for control survey.
The coupling part of described probe holder and sample holder scribbles fluid sealant and leaks to prevent sample.
Described probe and the basic vertical fixing of described probe holder.
The coupling part of described probe and described probe holder scribbles fluid sealant and leaks to prevent sample.
Another purpose of the present utility model is to propose a kind of thermal conductivity measurement system with above-mentioned heat conductivity measuring device.
Thermal conductivity measurement system according to another embodiment of the present utility model comprises above-mentioned heat conductivity measuring device; D.C. regulated power supply, described D.C. regulated power supply is connected with described heating arrangement, so that described heating arrangement provides constant heating power; Harvester, described harvester is used to gather the temperature of thermocouple measurement; And the computing machine that is used to handle image data, described computing machine links to each other with described harvester.
In addition, the thermal conductivity measurement system according to another embodiment of the present utility model also has following additional technical feature:
Described thermal conductivity measurement system further comprises the temperature compensation means that is used to guarantee compensation temperature.
Described temperature compensation means is the ice chest that mixture of ice and water is housed.
Described thermal conductivity measurement system also further comprises and is used to guarantee to heat the synchronous signal device that carries out synchronously with collecting temperature.
According to thermal conductivity measurement of the present utility model system, the measurement range of testing sample is wide, and can accurately measure the coefficient of heat conductivity of the testing sample under different temperatures.In addition, can carry out computing and display result automatically, make that measurement is convenient and precision is high, simple in structure and saving cost at the measurement computer-chronograph.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the structural representation according to the heat conductivity measuring device of an embodiment of the utility model; With
Fig. 2 is the structural representation according to the thermal conductivity measurement system of another embodiment of the utility model.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, term " interior ", " outward ", " on ", close the orientation of indication such as D score or position is based on orientation shown in the drawings or position relation, it only is the utility model rather than require the utility model therefore can not be interpreted as for convenience of description with specific orientation structure and operation to restriction of the present utility model.
Below with reference to the heat conductivity measuring device of Fig. 1 description according to first embodiment of the utility model.
As shown in Figure 1, comprise probe 11, heating arrangement 12, thermopair 13, probe holder 14 and sample holder 15 according to heat conductivity measuring device 1 of the present utility model.Wherein, the length-diameter ratio of probe 11 is greater than 20.
The probe of thermopair 13 places the outside surface of probe 11 with acquisition probe 11 temperature, and particularly, the probe of thermopair 13 is fixed on probe 11 outside surfaces through heater strip.Alternatively, thermopair can adopt copper constantan T type thermopair.
In an example of the present utility model, also further comprise the temperature regulating device 16 of the environment temperature when being used for the control survey coefficient of heat conductivity, as shown in Figure 1.Alternatively, temperature regulating device 16 can be water bath with thermostatic control, the temperature that between 0 ℃-100 ℃, accurately controls environment, thus can be implemented under the different temperatures measurement to the coefficient of heat conductivity of testing sample.
According to heat conductivity measuring device 1 of the present utility model, probe can be fixed on well in the sample holder 15 and be difficult for tilting or come off, so that survey more accurately, and can realize the measurement under the different temperatures, in addition, whether the amount that also can be convenient to observe testing sample did not have the top of probe.Further, the material that testing sample can go deep into for any probes such as solids such as powder or particulate material, liquid, measurement range is wide.
Below according to the thermal conductivity measurement system of Fig. 2 detailed description according to second embodiment of the present utility model.
As shown in Figure 2, comprise above-mentioned heat conductivity measuring device 1, D.C. regulated power supply 2, harvester 3 and computing machine 4 according to thermal conductivity measurement of the present utility model system.Wherein, the two poles of the earth of D.C. regulated power supply 2 are connected respectively with two lead-in wires that heater strip 12 is drawn, and are used for providing constant voltage so that heating power is constant to heater strip 12.In an example of the present utility model, between heater strip 12 and D.C. regulated power supply 2, also can be provided with triode 7, this triode 7 also is connected with harvester 3.Harvester 3 links to each other with thermopair 13, is used to gather the temperature that thermopair 13 is measured.Computing machine 4 links to each other with harvester 3, is used to handle the data that collect.
In another example of the present utility model, the thermal conductivity measurement system further comprises the temperature compensation means 5 that is used to guarantee compensation temperature.Alternatively, this temperature compensation means 5 is for being equipped with the ice chest of mixture of ice and water.Thermopair 13 is put into ice chest 5 with the corresponding other end of probe, and draws compensating wire link to each other with harvester 3 from ice chest 5.Ice chest 5 can guarantee that compensation temperature is 0 degree.
In another example of the present utility model, the thermal conductivity measurement system also further comprises and is used to guarantee to heat the synchronous signal device 6 that carries out synchronously with collecting temperature.Alternatively, synchronous signal device 6 can be 1.5 volts common batteries.When beginning to gather, offer 7 one signal pulses of triode by harvester, add heat passage this moment opens, thereby can guarantee to gather and add hotsync carries out.
According to Fig. 2 the course of work when measuring the coefficient of heat conductivity of testing sample according to thermal conductivity measurement system of the present utility model is described below.
At first, sample is put into testing sample holder 15, wherein the amount of testing sample should there be probe 11 bottoms.
Then, offer the constant heating power of heater strip 12 by D.C. regulated power supply 2, thereby testing sample is heated, and make compensation temperature remain on 0 ℃ by the mixture of ice and water in the ice chest 5.
Again, thermopair 13 is measured the temperature of testing sample and is offered harvester 3.
At last, harvester 3 shows the temperature and time that collects by computing machine 4, and utilizes that existing program can calculate coefficient of heat conductivity very soon in the computing machine 4.
According to thermal conductivity measurement of the present utility model system, the measurement range of testing sample is wide, and can accurately measure the coefficient of heat conductivity of the testing sample under different temperatures.In addition, can carry out computing and display result automatically, make that measurement is convenient and precision is high, simple in structure and saving cost at the measurement computer-chronograph.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment under the situation that does not break away from principle of the present utility model and aim, scope of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. a heat conductivity measuring device is characterized in that, comprising:
Probe;
Heating arrangement, described heating arrangement are placed on described detecting probe surface and are suitable for testing sample is heated;
Thermopair, the probe of described thermopair place the outside surface of described probe with the acquisition probe temperature;
Probe holder, described probe holder are used for fixing described probe and described probe holder lower surface is formed with external thread; And
The sample holder, described sample holder is used to hold testing sample, and the internal thread hole that its bottom formation matches with described external thread is fixed on probe holder in the described sample holder with realization.
2. heat conductivity measuring device according to claim 1, it is characterized in that, described heating arrangement is a heater strip, be wrapped in described probe outside surface after the described heater strip doubling equably, and the probe of described thermopair is fixed in the probe outside surface through described heater strip.
3. heat conductivity measuring device according to claim 1 is characterized in that, further comprises the temperature regulating device of the environment temperature when being used for control survey.
4. heat conductivity measuring device according to claim 1 is characterized in that, the coupling part of described probe holder and sample holder scribbles fluid sealant and leaks to prevent sample.
5. heat conductivity measuring device according to claim 1 is characterized in that, described probe and the basic vertical fixing of described probe holder.
6. heat conductivity measuring device according to claim 5 is characterized in that, the coupling part of described probe and described probe holder scribbles fluid sealant and leaks to prevent sample.
7. a thermal conductivity measurement system is characterized in that, comprising:
According to each described heat conductivity measuring device among the claim 1-6;
D.C. regulated power supply, described D.C. regulated power supply is connected with described heating arrangement, so that described heating arrangement provides constant heating power;
Harvester, described harvester is used to gather the temperature of thermocouple measurement; With
Be used to handle the computing machine of image data, described computing machine links to each other with described harvester.
8. thermal conductivity measurement according to claim 7 system is characterized in that, further comprises the temperature compensation means that is used to guarantee compensation temperature.
9. thermal conductivity measurement according to claim 8 system is characterized in that described temperature compensation means is the ice chest that mixture of ice and water is housed.
10. thermal conductivity measurement according to claim 7 system is characterized in that, further comprises being used to guarantee to heat the synchronous signal device that carries out synchronously with collecting temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201087353U CN201716277U (en) | 2010-01-29 | 2010-01-29 | Heat conductivity measuring device and measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201087353U CN201716277U (en) | 2010-01-29 | 2010-01-29 | Heat conductivity measuring device and measuring system |
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| CN201716277U true CN201716277U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201087353U Expired - Fee Related CN201716277U (en) | 2010-01-29 | 2010-01-29 | Heat conductivity measuring device and measuring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293184A (en) * | 2013-05-24 | 2013-09-11 | 哈尔滨工业大学 | Experimental device for testing heat conductivity coefficient of building material based on quasi steady state and unsteady state methods |
| CN103712716A (en) * | 2014-01-06 | 2014-04-09 | 中国科学院化学研究所 | Thermal power measuring device |
| CN107402229A (en) * | 2017-07-26 | 2017-11-28 | 辽宁工程技术大学 | A kind of measure device and method of ice cube surface convective heat-transfer coefficient |
| CN108828005A (en) * | 2018-06-13 | 2018-11-16 | 华北电力大学（保定） | A kind of experimental system and method based on sonde method measurement powder thermal coefficient |
| CN111982960A (en) * | 2020-08-13 | 2020-11-24 | 中国科学院合肥物质科学研究院 | High-temperature-resistant heat probe device for online measurement of heat conductivity coefficient based on hot wire method |
-
2010
- 2010-01-29 CN CN2010201087353U patent/CN201716277U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293184A (en) * | 2013-05-24 | 2013-09-11 | 哈尔滨工业大学 | Experimental device for testing heat conductivity coefficient of building material based on quasi steady state and unsteady state methods |
| CN103293184B (en) * | 2013-05-24 | 2015-03-25 | 哈尔滨工业大学 | Experimental device for testing heat conductivity coefficient of building material based on quasi steady state and unsteady state methods |
| CN103712716A (en) * | 2014-01-06 | 2014-04-09 | 中国科学院化学研究所 | Thermal power measuring device |
| CN107402229A (en) * | 2017-07-26 | 2017-11-28 | 辽宁工程技术大学 | A kind of measure device and method of ice cube surface convective heat-transfer coefficient |
| CN107402229B (en) * | 2017-07-26 | 2019-07-02 | 辽宁工程技术大学 | A kind of measuring method of ice cube surface convective heat-transfer coefficient |
| CN108828005A (en) * | 2018-06-13 | 2018-11-16 | 华北电力大学（保定） | A kind of experimental system and method based on sonde method measurement powder thermal coefficient |
| CN111982960A (en) * | 2020-08-13 | 2020-11-24 | 中国科学院合肥物质科学研究院 | High-temperature-resistant heat probe device for online measurement of heat conductivity coefficient based on hot wire method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20140129 |