CN201225989Y - Automatization measuring instrument for thermal expansion coefficient - Google Patents
Automatization measuring instrument for thermal expansion coefficient Download PDFInfo
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- CN201225989Y CN201225989Y CNU2008201086052U CN200820108605U CN201225989Y CN 201225989 Y CN201225989 Y CN 201225989Y CN U2008201086052 U CNU2008201086052 U CN U2008201086052U CN 200820108605 U CN200820108605 U CN 200820108605U CN 201225989 Y CN201225989 Y CN 201225989Y
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- tested sample
- expansion coefficient
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Abstract
The utility model discloses an automatic heat expansion coefficient admeasuring apparatus which utilizes the elongation of a guide sample to confirm the heating temperature of a tested sample. The utility model includes a heating furnace, two silica tubes arranged in the heating furnace which are closely arranged in parallel as well as two silica rods, two sensors and a main control unit; the guide sample and the tested sample are respectively arranged in the silica tubes; wherein, one end of one silica rod is connected with the guide sample and the other end is connected with the first sensor; one end of the other silica rod is connected with the tested sample and the other end is connected with the second sensor; the first sensor and the second sensor are connected with the main control unit. The automatic heat expansion coefficient admeasuring apparatus does not need manual developing treatment and does not need to carry out manual measurement on the elongation of a longitudinal coordinate in an expansion curve, is simply operated and can quickly and accurately measure.
Description
Technical field
The utility model relates to a kind of measuring instrument, specifically, relates to a kind of thermal expansivity measuring instrument.
Background technology
Expansion coefficient is the inherent characteristic of object, need the material of measurement thermal expansion character very wide, as various potteries, metal, compound substance etc., especially use extremely wide at electronic applications, plain conductor as bulb, the anode cap of kinescope, used alloy of the pin of pin and electron tube and glass sealing, high-power power valve and crunch seal, the lead-in wire of SIC (semiconductor integrated circuit) and glass, plastics sealing-in etc., suchlike sealing-in, all require the thermal expansivity of metal and being complementary of seal, sealing materials, therefore must accurately measure various material coefficient of thermal expansion coefficients, promptly require the degree of accuracy and the accuracy of thermal expansivity surveying instrument.According to domestic and international expansion alloy standard the requirement of measuring accuracy is 10
-6～10
-7/ ℃ the order of magnitude.
Expansion coefficient measuring apparatus commonly used, a kind of is optical triangulation frame dilatometer, a kind of DIL of being type expansion coefficient measuring apparatus (is example with the DIL402 type).
As shown in Figure 1, optical triangulation frame dilatometer, comprise quartz ampoule 11, quartz rod 121, drive link 122, fixed bar 13, optical triangulation frame 16, heating furnace 15, be arranged on catoptron 14, deflecting plate 17, photographic plate 18 and light source 19 on the optics tripod, fixed bar 13 withstands on the optical triangulation frame by contact right angle electrical E.During use, the standard specimen A of known expansion coefficient and tested sample B are contained in respectively in the quartz ampoule 11 of two next-door neighbours and parallel placement, withstand on two fulcrum C of optical triangulation frame 16 by quartz rod 121 and drive link 122, on the D, when the rising standard specimen A with temperature extends, promoting luminous point moves at the x direction of principal axis, the elongation of tested sample B is also promoting luminous point simultaneously and is moving at the y axle, light source 19 is thrown on the photographic plate 18 by the catoptron on the optical triangulation frame 16 14, on photographic plate 18, formed the synthermal displacement curve of tested sample down like this, by the ordinate under the kind of calliper expansion curve assigned temperature (being the elongation of tested sample), can extrapolate the expansion coefficient of tested sample in view of the above.Because photographic plate 18 has long distance with optical triangulation frame 16, signal can be amplified several times, therefore this method can be measured small variation, can measure lower expansion coefficient.
The shortcoming of this kind optical triangulation frame dilatometer is: after 1. test finishes, photographic plate must be developed and photographic fixing, the cycle is long, efficient is low; 2. need with the length (elongation) on the corresponding Y-axis of X-axis temperature spot on the kind of calliper curve, as the foundation of the expansion coefficient that calculates tested sample, measuring error artificial in the measuring process is bigger.
The expansion coefficient measuring apparatus of DIL402 type as shown in Figure 2, this instrument is that tested sample B is contained in the quartz ampoule 21, be connected on the sensor 23 with quartz pushrod 22, sensor 23 is fixed on the support 26, when 24 pairs of tested sample B heating of heating furnace, sensor 23 is read the Δ L variable signal of tested sample, thermopair 25 is housed in the heating furnace 24, temperature signal in the output temperature-rise period, PLC controller (programmable logic controller (PLC)) and computing machine calculate the expansion coefficient of tested sample according to these two signals.
The shortcoming of the expansion coefficient measuring apparatus of this DIL402 type is: its measuring accuracy is subjected to the restriction of thermopair measuring accuracy, and the temperature of thermopair output reflects that fully the bulk temperature difficulty of tested sample is bigger.
The utility model content
The purpose of this utility model is to need not artificial development treatment in order to solve the shortcoming of above-mentioned expansion coefficient measuring apparatus, to provide, need not the ordinate elongation in the expansion curve is carried out manual measurement, and is simple to operate, measures expansion coefficient measuring apparatus fast and accurately.
For achieving the above object, the technical solution adopted in the utility model is: a kind of robotization thermal expansivity measuring instrument, it utilizes the elongation of standard specimen to determine the heating-up temperature of tested sample, comprise heating furnace, two quartz ampoules that are close to and are set in parallel in the heating furnace, and two quartz rods, two sensors and main control unit, standard specimen and tested sample place respectively in the described quartz ampoule, quartz rod one end of one of them is connected with standard specimen, the other end is connected with first sensor, another root quartz rod one end is connected with tested sample, the other end is connected with second sensor, and described first, second sensor is connected with main control unit again.
Preferably, described main control unit comprises a PLC controller and a computing machine, and this computing machine is furnished with screen displaying software.
Preferably, described standard specimen adopts the Pyros alloy.
Preferably, be provided with thermopair in the described heating furnace and dispose temperature display meter.
The beneficial effects of the utility model are: the elongation when sensor directly reads standard specimen and tested sample and raises with temperature, when standard specimen elongation signal passes to main control unit, main control unit can calculate temperature variation according to the program of establishment, when temperature reaches assigned temperature, the expansion coefficient of calculating tested sample immediately according to the elongation and the thermometer of tested sample; Various data such as expansion coefficient and expansion curve are set and can be made amendment on touch-screen initial parameters such as standard specimen, specimen length and room temperatures before the test by visual touch-screen instant playback; In the heating furnace thermopair of configuration and temperature display meter can be when heating up monitoring temperature; Need not artificial development treatment and the ordinate elongation in the expansion curve is carried out manual measurement, simple to operate, measure quick and precisely.
Description of drawings
Fig. 1 is the synoptic diagram of the optical triangulation frame dilatometer of prior art;
Fig. 2 is the synoptic diagram of DIL (402) the type expansion coefficient measuring apparatus of prior art;
Fig. 3 is the synoptic diagram of robotization thermal expansivity measuring instrument of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
With reference to Fig. 3, utilize the elongation of standard specimen to determine the heating-up temperature of tested sample, utilize the elongation of heating-up temperature and tested sample to calculate the robotization thermal expansivity measuring instrument of the expansion coefficient of tested sample again, comprise heating furnace 33, two quartz ampoules 311 that are close to and are set in parallel in the heating furnace 33,312, two quartz rods 321,322, sensor 351,352 and main control unit, main control unit comprises PLC controller 36 (programmable logic controller (PLC)) and computing machine 37, this PLC controller can be stored inputoutput data, and temperature-rise period controlled, this computing machine is furnished with screen displaying software, but the elongation of the B of instant playback tested sample and expansion coefficient, standard specimen A and tested sample B place described quartz ampoule 311 respectively, in 312, quartz rod 321 1 ends are connected with standard specimen A, the other end is connected with first sensor 351, quartz rod 322 1 ends are connected with tested sample B, the other end is connected first sensor 351 with second sensor 352, second sensor 352 is connected with main control unit.The first sensor 351 and second sensor 352 are high-precision sensor, and they measure the elongation of standard specimen A and tested sample B respectively, and the precision of measurement can reach 0.02 * 10
-6/ ℃.
As preferred embodiment, first sensor 351, second sensor 352, quartz rod 321 and quartz rod 322 support by support 34, be provided with thermopair in the heating furnace 33 and dispose temperature display meter (thermopair and temperature display meter are not shown), so that monitoring temperature when heating up.
Standard specimen A selects for use and adds the stable Pyros alloy of thermal expansion character (Pyrrho's Si alloy) repeatedly, can add the heating-up temperature of the stable characteristics demarcation of hot expansibility repeatedly according to it with tested sample in the environment, during measurement standard specimen A and tested sample B are placed on the blind end of quartz ampoule 311,312 respectively, quartz rod 321 1 ends are connected with standard specimen A, the other end is connected with first sensor 351, quartz rod 322 1 ends are connected with tested sample B, and the other end is connected with second sensor 352.When heating furnace 33 heating elevate the temperature, standard specimen A elongation promotes quartz rod 321 and moves, tested sample B elongation promotes quartz rod 322 and moves, movement amount signal passes to the PLC controller by sensor 351 and sensor 352, again by the program of working out in the PLC by formula (1) calculate temperature variation (T
2-T
1), the elongation according to this temperature variation and tested sample can calculate the expansion coefficient of tested sample B under this temperature again.
Wherein: α-thermal expansivity, * 10
-6/ ℃;
L
0, the length after L '-the be respectively former length of expansion sample and the elongation, mm;
T
2, T
1-be respectively probe temperature and ambient temperature, ℃.
This robotization thermal expansivity measuring instrument utilizes the elongation of standard specimen to determine the heating-up temperature of tested sample, utilize high-precision sensor to measure the elongation of standard specimen and tested sample again, can calculate the expansion coefficient of tested sample according to these parameters, simultaneously can be on touch-screen display result data in real time; And thermopair is arranged in the heating furnace and be furnished with temperature display meter, can monitor intensification during intensification, heating rate is also by the program setting in the PLC controller.The signal input PLC controller of sensor measurement, program by establishment calculates the expansion coefficient of tested sample and the expansion curve that draws, and various data such as expansion coefficient and expansion curve can be made amendment on touch-screen to initial parameter setting values such as standard specimen, specimen length and room temperatures before the test by visual touch-screen instant playback.
Being the utility model preferred embodiment only in sum, is not to be used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to technology category of the present utility model.
Claims (4)
1, a kind of robotization thermal expansivity measuring instrument, it utilizes the elongation of standard specimen to determine the heating-up temperature of tested sample, comprise heating furnace, two quartz ampoules that are close to and are set in parallel in the heating furnace, and two quartz rods, two sensors and main control unit, it is characterized in that: standard specimen and tested sample place respectively in the described quartz ampoule, quartz rod one end of one of them is connected with standard specimen, the other end is connected with first sensor, another root quartz rod one end is connected with tested sample, the other end is connected with second sensor, and described first, second sensor is connected with main control unit again.
2, robotization thermal expansivity measuring instrument according to claim 1 is characterized in that, described main control unit comprises a PLC controller and a computing machine, and this computing machine is furnished with screen displaying software.
3, robotization thermal expansivity measuring instrument according to claim 2 is characterized in that, described standard specimen adopts the Pyros alloy.
4, robotization thermal expansivity measuring instrument according to claim 1 is characterized in that, is provided with thermopair in the described heating furnace and disposes temperature display meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201086052U CN201225989Y (en) | 2008-06-10 | 2008-06-10 | Automatization measuring instrument for thermal expansion coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201086052U CN201225989Y (en) | 2008-06-10 | 2008-06-10 | Automatization measuring instrument for thermal expansion coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225989Y true CN201225989Y (en) | 2009-04-22 |
Family
ID=40598884
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201086052U Expired - Fee Related CN201225989Y (en) | 2008-06-10 | 2008-06-10 | Automatization measuring instrument for thermal expansion coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201225989Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442608A (en) * | 2016-10-31 | 2017-02-22 | 北京仁创砂业科技有限公司 | Thermal expansivity determining instrument |
| CN106501301A (en) * | 2015-09-07 | 2017-03-15 | 哈尔滨理工大学 | Magnesium iron stokehold heat analysis-eutectic expansion device for fast detecting and detection method |
| CN107632041A (en) * | 2017-10-27 | 2018-01-26 | 北京科技大学 | A kind of method and system of on-line measurement pellet ore reduction swellability |
| CN109187625A (en) * | 2018-09-29 | 2019-01-11 | 河北工业大学 | A kind of material heat expansion measuring device based on DIC measuring technique |
| CN111272804A (en) * | 2020-03-12 | 2020-06-12 | 陕西科技大学 | Device and method for measuring enamel linear thermal expansion coefficient in ceramic based on grating |
| CN112326722A (en) * | 2020-11-16 | 2021-02-05 | 内蒙古科技大学 | Device and method for measuring diffusion welding expansion based on quenching expansion instrument |
| CN112505090A (en) * | 2020-11-17 | 2021-03-16 | 贵州大学 | Automatic measurement system and method for axial and radial thermal expansion rates of rock sample |
| CN116593524A (en) * | 2023-04-24 | 2023-08-15 | 哈尔滨工业大学 | Thermal expansion sample bracket applicable to various shapes and capable of improving measurement stability of horizontal thermal expansion instrument and application |
-
2008
- 2008-06-10 CN CNU2008201086052U patent/CN201225989Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501301A (en) * | 2015-09-07 | 2017-03-15 | 哈尔滨理工大学 | Magnesium iron stokehold heat analysis-eutectic expansion device for fast detecting and detection method |
| CN106442608A (en) * | 2016-10-31 | 2017-02-22 | 北京仁创砂业科技有限公司 | Thermal expansivity determining instrument |
| CN107632041A (en) * | 2017-10-27 | 2018-01-26 | 北京科技大学 | A kind of method and system of on-line measurement pellet ore reduction swellability |
| CN109187625A (en) * | 2018-09-29 | 2019-01-11 | 河北工业大学 | A kind of material heat expansion measuring device based on DIC measuring technique |
| CN111272804A (en) * | 2020-03-12 | 2020-06-12 | 陕西科技大学 | Device and method for measuring enamel linear thermal expansion coefficient in ceramic based on grating |
| CN112326722A (en) * | 2020-11-16 | 2021-02-05 | 内蒙古科技大学 | Device and method for measuring diffusion welding expansion based on quenching expansion instrument |
| CN112326722B (en) * | 2020-11-16 | 2023-08-11 | 内蒙古科技大学 | Device and method for performing diffusion welding expansion measurement based on quenching dilatometer |
| CN112505090A (en) * | 2020-11-17 | 2021-03-16 | 贵州大学 | Automatic measurement system and method for axial and radial thermal expansion rates of rock sample |
| CN116593524A (en) * | 2023-04-24 | 2023-08-15 | 哈尔滨工业大学 | Thermal expansion sample bracket applicable to various shapes and capable of improving measurement stability of horizontal thermal expansion instrument and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20160610 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |