CN2469445Y - Measuring instrument for material heat conductivity coefficient - Google Patents
Measuring instrument for material heat conductivity coefficient Download PDFInfo
- Publication number
- CN2469445Y CN2469445Y CN 01208893 CN01208893U CN2469445Y CN 2469445 Y CN2469445 Y CN 2469445Y CN 01208893 CN01208893 CN 01208893 CN 01208893 U CN01208893 U CN 01208893U CN 2469445 Y CN2469445 Y CN 2469445Y
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- gauge head
- fixed
- fixed support
- sample
- temp
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model discloses a determinator of the material thermal conductivity, and consists of a fixed support, a movable support gliding on the fixed support, a hoisting jack fixed on the soleplate of the fixed support, an upper and a lower gauge heads, and a pressure pickup. The fixed support and the movable support are respectively fixed with an upper and a lower constant temperature water tanks; the upper and the lower gauge heads are respectively fixed in the upper and the lower constant temperature water tanks; the upper and the lower gauge heads are respectively provided with a thermometer hole; the cylinder rod of the hoisting jack connects with the pressure pickup and supports the lower gauge head; the sample to be detected is arranged on the lower gauge head; and a standard model is arranged between the sample to be detected and the upper gauge head. The detecting material thermal conductivity is accurate, and the error is small; the structure of the determinator is simple, and the cost is low.
Description
The utility model belongs to a kind of instrument of measuring material thermal conductivity, relates in particular to a kind of thermal conductivity measuring apparatus of solid material.
In the research and development of some functional materials and to production run, need test accurately the coefficient of heat conductivity of material, and coefficient of heat conductivity is because itself, measure is vast researcher of puzzlement and producers' a difficult problem always.
According to report both domestic and external as can be known, now, the coefficient of heat conductivity of measuring material mainly contains following two kinds of methods: 1. laser scintigraphy.This method mainly adopts superlaser as thermal source, by rapidly certain heat being deposited on surface of sample in the short time, records THERMAL DIFFUSIBILITY calculates material again by formula coefficient of heat conductivity by another surperficial temperature rise of measuring samples.This method is indirect measurement, and it is higher to measure cost, and measures owing to the density that need know material makes the error change of measurement big.And measure with this method, instrument costs an arm and a leg, and general middle-size and small-size user is difficult to bear.2. temperature gradient method, this method be by being placed on sample heat sink an of thermal source and another low temperature, measures the thermograde that forms and obtain the coefficient of heat conductivity of material.This method is because the thermograde of measuring is comparatively complicated, and measuring process is long, and measuring accuracy is not high.
Goal of the invention of the present utility model provides the material thermal conductivity analyzer that a kind of testing cost is low, the time is short, accuracy is high.
The purpose of this utility model is to realize like this, it comprises fixed support, the travel(l)ing rest that can on fixed support, slide, and be fixed on lifting jack on the fixed support base plate, gauge head up and down, pressure transducer, it is characterized in that: be fixed with respectively on fixed support and the travel(l)ing rest, following Water Tank with Temp.-controlled, on, last gauge head is separately fixed at, in the following Water Tank with Temp.-controlled, on, following gauge head is respectively equipped with thermometer hole, the piston rod of lifting jack contacts with pressure transducer, supporting is gauge head down, tested sample is placed on down on the gauge head, also is placed with standard sample between tested sample and the last gauge head.
Between aforesaid sensor and the following gauge head pressure-stabilizing spring is housed, upper and lower Water Tank with Temp.-controlled is to adopt the electrothermal tube heating.
The utility model compared with prior art has following advantage:
1. because the utility model has added a pressure-stabilizing spring, guarantee constant pressure, gauge head in Water Tank with Temp.-controlled, has guaranteed temperature constant respectively up and down, so it is little to measure the accurate error of coefficient of heat conductivity of material.
2. simple in structure, cost is low, measures used time weak point.
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the conductometer typical curve.
Analyzer comprises fixed support 1, travel(l)ing rest 13, lifting jack 8, on, following gauge head 9,12, pressure transducer 6, travel(l)ing rest 13 can be on fixed support 1, lower slider, be fixed with down respectively on fixed support 1 and the travel(l)ing rest 13, following Water Tank with Temp.-controlled 2,4, on, following gauge head 9, be respectively equipped with thermometer hole 14 on 12,3, lifting jack 8 is fixed on the base plate on the fixed support 1, the piston rod of lifting jack 8 contacts with pressure transducer 7, between pressure transducer 7 and the following gauge head 12 pressure-stabilizing spring 6 is housed, supporting is gauge head 12 down, guarantee constant pressure, on, following Water Tank with Temp.-controlled 2, the 4th, adopt electrothermal tube 5 to heat.Other has an end of a temperature sensor to link to each other with the thermometer hole of standard sample by thermometer hole 14, and the other end links to each other with one millivolt of indicator gauge.During measurement, tested sample 11 is placed on down on the gauge head 12, also be placed with standard sample 10 between tested sample 11 and the last gauge head 9, to go up, following gauge head 9, thermometer hole 14 on 12,3 are connected with temperature sensor one end, the other end of temperature sensor be connected from temperature controller, before measuring the coefficient of heat conductivity of material, at first in the control, following Water Tank with Temp.-controlled 2,4 temperature is respectively 50 ℃ and 30 ℃, to descend gauge head 11 jack-up with lifting jack 7, control sample 11 on the gauge head is closely contacted with standard sample 10, make with indicator gauge that pressure transducer links to each other on reading reach 3.5, reading can descend rapidly on the millivolt indicator gauge that is connected with temperature sensor this moment, during to another stable state, read its reading.Unload control sample, when treating that two calibration cells come back to original state, change the control sample of another thickness, repeat aforesaid operations, write down all data.According to the data of the material gained of different-thickness, do horizontal marking with the coefficient of heat conductivity of material and the merchant λ/L of its thickness, it is that reading is an ordinate on the automatic control table that the electromotive force on the control sample changes, and draws the typical curve as Fig. 2.
During test sample to be tested and control sample are replaced, the reading on the record automatic control panel finds the corresponding coefficient of heat conductivity λ/L value relevant with specimen height then on the curve of Fig. 2.This value and specimen height multiplied each other promptly obtain the coefficient of heat conductivity of material.
The material thermal conductivity analyzer its up and down gauge head to select red copper for use be raw material, it is raw material that standard sample and control sample are selected red copper for use.To select Polyvinylchloride for use be raw material to Water Tank with Temp.-controlled up and down.
Claims (2)
1. material thermal conductivity analyzer, comprise fixed support, the travel(l)ing rest that can on fixed support, slide, and be fixed on lifting jack on the fixed support base plate, gauge head up and down, pressure transducer, it is characterized in that: be fixed with respectively on fixed support (1) and the travel(l)ing rest (13), following Water Tank with Temp.-controlled (2,4), on, last gauge head (9,12) be separately fixed at, following Water Tank with Temp.-controlled (2,4) in, on, following gauge head (9,12) be respectively equipped with thermometer hole (14,3), the piston rod of lifting jack (8) contacts with pressure transducer (6), supporting is gauge head (12) down, tested sample (11) is placed on down on the gauge head (12), also is placed with standard sample (10) between tested sample (11) and the last gauge head (9).
2. a kind of material thermal conductivity analyzer as claimed in claim 1 is characterized in that between described sensor (7) and the following gauge head (12) pressure-stabilizing spring (6) being housed, and upper and lower Water Tank with Temp.-controlled (2,4) is to adopt electrothermal tube (5) heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01208893 CN2469445Y (en) | 2001-03-13 | 2001-03-13 | Measuring instrument for material heat conductivity coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01208893 CN2469445Y (en) | 2001-03-13 | 2001-03-13 | Measuring instrument for material heat conductivity coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2469445Y true CN2469445Y (en) | 2002-01-02 |
Family
ID=33628869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01208893 Expired - Fee Related CN2469445Y (en) | 2001-03-13 | 2001-03-13 | Measuring instrument for material heat conductivity coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2469445Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539472A (en) * | 2011-12-31 | 2012-07-04 | 上海交通大学 | Method for measuring heat conductivity of poor conductor by using steady-state comparison |
| CN101493432B (en) * | 2009-03-10 | 2012-07-18 | 中国计量科学研究院 | Method for measuring thermal conductivity coefficient of solid material |
| CN102628818A (en) * | 2012-04-24 | 2012-08-08 | 天津大学 | Thermal conduction coefficient tester for single-plate guarded thermal plate method with automatic pressure regulator and thickness measuring device |
-
2001
- 2001-03-13 CN CN 01208893 patent/CN2469445Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493432B (en) * | 2009-03-10 | 2012-07-18 | 中国计量科学研究院 | Method for measuring thermal conductivity coefficient of solid material |
| CN102539472A (en) * | 2011-12-31 | 2012-07-04 | 上海交通大学 | Method for measuring heat conductivity of poor conductor by using steady-state comparison |
| CN102628818A (en) * | 2012-04-24 | 2012-08-08 | 天津大学 | Thermal conduction coefficient tester for single-plate guarded thermal plate method with automatic pressure regulator and thickness measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |