CN205449332U - Calibrating device suitable for contact high temperature temperature sensor - Google Patents
Calibrating device suitable for contact high temperature temperature sensor Download PDFInfo
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- CN205449332U CN205449332U CN201521076091.3U CN201521076091U CN205449332U CN 205449332 U CN205449332 U CN 205449332U CN 201521076091 U CN201521076091 U CN 201521076091U CN 205449332 U CN205449332 U CN 205449332U
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Abstract
The utility model relates to a calibrating device suitable for contact high temperature temperature sensor, including heat source and the temperature standard of setting in heat source one side, the temperature standard have a thin cylindrical resistant high temperature alloy that a center was equipped with the temperature sensor mounted position, weld according to " article " font position annular shaft on the surface of keeping away from the heat source at resistant high temperature alloy has three thermocouples, is equipped with protective case at whole thermocouple overcoats. Compared with the prior art, the utility model discloses a rational in infrastructure, convenient operation, it utilizes laser welding technology to regard the thermocouple welding as the temperature standard on resistant high temperature alloy, utilizes oxy -acetylene flame to heat resistant high temperature alloy as the heat source simultaneously, has guaranteed high temperature temperature sensor's demarcation quality, has greatly improved the actual measurement precision. The utility model discloses can realize that the temperature measurement upper limit exceedes 1500 DEG C contact high temperature temperature sensor's calibration, and have fine repeatability and stable.
Description
Technical field
This utility model belongs to temperature sensor technology field, is specifically related to a kind of calibrating installation being applicable to the surface of solids thermometric contact high temperature sensor.
Background technology
The calibration of sensor refers to utilize known input quantity input pickup, by measuring the output of sensor response and then obtaining the process of sensor input-output characteristic, its defect is to introduce certain calibration error at outfan, thus has a strong impact on Surveying Actual Precision.Therefore, for sensor, the quality of calibrating installation and calibration steps all will directly affect the calibrating quality of sensor.
Compared to other physical quantity transducers, setting up of the calibration test system of temperature sensor is increasingly difficult, and the most reliable and the most stable thermal source and temperature reference standard are two very important factors, and this becomes apparent from for pyrostat.
In prior art, it is to utilize thermocouple measuring temperature sensor installation place temperature for the traditional method that contact high temperature sensor is calibrated.But for the calibration of the thermometric upper limit high temperature sensor more than 1500 DEG C, traditional calibrating installation cannot meet the calibration temperature requirement of current high temperature sensor, cannot guarantee that repeatability and the stability of data, and the thermocouple normal work at the highest temperature and oxygen-containing adverse circumstances being commonly used for temperature survey benchmark is the most oxidizable.
Utility model content
The purpose of this utility model is that the problem that there is prior art is solved, and then designs the calibrating installation being applicable to contact high temperature sensor that a kind of structural behaviour is reasonable, easy to operate, can provide reliably temperature reference benchmark.
Technical solution of the present utility model is as described below.
A kind of calibrating installation being applicable to contact high temperature sensor; including thermal source and the temperature standard being arranged on thermal source side; described temperature standard has one piece of center and is provided with the thin cylindrical high-temperature alloy of temperature sensor installation site; it is welded with three thermocouples away from the surface of thermal source by triangle disposition position annulate shaft at high-temperature alloy, outside whole thermocouples, is set with protection sleeve pipe.
Above-mentioned be applicable to the calibrating installation of contact high temperature sensor, three thermocouples are the most equal with the spacing of high-temperature alloy center, and the angle that the most any two thermocouples are formed with high-temperature alloy center is 120 °.
Above-mentioned be applicable to the calibrating installation of contact high temperature sensor, three thermocouple weldings, on high-temperature alloy, are coated with the high-temp glue of resistance to 1700 DEG C of high temperature on each thermocouple pad with high-temperature alloy.
Above-mentioned be applicable to the calibrating installation of contact high temperature sensor; temperature sensor installed position at high-temperature alloy center is provided with the contact high temperature sensor of calibration; the locus of thermal source flame can be adjusted by sensor by three-dimensional adjusting mechanism, it is ensured that the center of the center alignment high-temperature alloy of flame.
Above-mentioned be applicable to the calibrating installation of contact high temperature sensor, thermal source is the effect controlling oxygen and acetylene than being 1～1.2 and the oxyacetylene torch that flame is neutral flame that produces.
Practical work process of the present utility model is such that
One, the high-temperature alloy being provided with thermocouple is fixed in cyclic aluminum oxide fiber frock；
Two, adjust thermal source, make the temperature on high-temperature alloy from low to high, change the most from high to low, lower three the thermocouple respective output temperature values of period observed and recorded, and temperature sensor installation place is recorded analog value by a Wen Yi；
Three, repeat above-mentioned second step, simulate the temperature curve between three pads and center temperature sensor installation place by the multi-group data recorded；
Four, the temperature sensor installed position at high-temperature alloy installs contact high temperature sensor, then thermal source is adjusted, make the temperature on high-temperature alloy from low to high, change the most from high to low, the output temperature value of lower three thermocouples of period observed and recorded and the output valve of contact high temperature sensor, the temperature curve utilizing above-mentioned three step process to obtain, completes the calibration of contact high temperature sensor.
Compared with prior art, of the present utility model rational in infrastructure, easy to operate, it utilize laser welding technology using thermocouple welding on high-temperature alloy as temperature standard, utilize oxyacetylene torch as thermal source, high-temperature alloy to be heated simultaneously, ensure that the calibration mass of high temperature sensor, drastically increase Surveying Actual Precision.Its concrete structure characteristics exhibit exists: the uniqueness of thermocouple location is able to ensure that the repeatability of repeatedly rating test data, reproducible nominal data can reduce incidental error and human error, and then reduce the calibrated error introduced at outfan, improve the accuracy of calibration result.This utility model can realize the calibration of the thermometric upper limit contact high temperature sensor more than 1500 DEG C, and has well repeatability and stability.
Accompanying drawing explanation
Fig. 1 is that the vertical view of calibrating installation described in the utility model is to structural representation.
Fig. 2 is thermocouple welding position and the schematic diagram of temperature sensor installation site in this calibrating installation.
In figure, each number designation title is respectively: 1-thermal source, 2-high-temperature alloy, 3a-thermocouple, 3b-thermocouple, 3c-thermocouple, 4-temperature sensor installation site, and 5-protects sleeve pipe, 6-cyclic aluminum oxide fiber frock.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model content is described further.
Seeing accompanying drawing, the calibrating installation being applicable to contact high temperature sensor described in the utility model is mainly made up of thermal source 1 and temperature standard.Using oxyacetylene torch as the thermal source of calibrating installation, and the effect ratio controlling oxygen and acetylene is 1～1.2, it is ensured that the flame of generation is neutral flame.Temperature standard is made up of one piece of thin cylindrical high-temperature alloy 2 and three thermocouples 3a, 3b, 3c.The thickness of high-temperature alloy 2 is less than 1.5mm; diameter is less than 3mm; it is provided with temperature sensor installation site 4 at high-temperature alloy 2 center; the contact high temperature sensor being embodied as the calibration of middle band is necessarily mounted at the center position of high-temperature alloy 2; and by three-dimensional adjusting mechanism, the locus of flame is adjusted, it is ensured that the center of the center alignment high-temperature alloy of flame.Three thermocouples 3a, 3b, 3c are welded on the high-temperature alloy 2 surface away from thermal source side by triangle disposition layout by laser welding technology, three thermocouples 3a, 3b, 3c are equal with high-temperature alloy center spacing respectively, and the angle that the most any two thermocouples are formed with high-temperature alloy center is 120 °.Protection sleeve pipe 5 it is set with outside whole thermocouples.
The concrete making of this utility model preferred embodiment and workflow are as follows:
One, high-temperature alloy solder side is polishing to smooth, and cleans；
Two, to three thermocouple 3a, 3b, 3c process so that it is the binding site of working end is L-shaped, it is ensured that its surfacing；
Three, use laser welding technology three thermocouples 3a, 3b, 3c to be welded on shown three pads of accompanying drawing 2 with triangle disposition respectively, after cooling, at solder joint, smear the white C-2 inorganic high-temp glue being resistant to 1700 DEG C of high temperature, stop thermocouple oxidized；
Four, after 80 DEG C and 150 DEG C of solidifications in 2 hours in 2 hours, white high-temp glue smears one layer again and is resistant to the rapid shaping high-temperature plastic (black high-temp glue) of 3000 DEG C, also function to the effect of fixing thermocouple；
Five, high-temperature alloy is fixed in the cyclic aluminum oxide fiber frock 6 shown in accompanying drawing 1；
Six, adjust thermal source, make the temperature on high-temperature alloy from low to high, change the most from high to low, the output temperature value of period observed and recorded lower three thermocouples 3a, 3b, 3c, and shown in accompanying drawing 2, temperature sensor installation place is recorded analog value by a Wen Yi；
Seven, repeat the 6th step, simulate the temperature curve between three pads and center temperature sensor mount point by the multi-group data recorded；
Eight, contact high temperature sensor is installed at temperature sensor installed position 4 shown in accompanying drawing 2, then thermal source is adjusted, make the temperature on high-temperature alloy from low to high, change the most from high to low, the output temperature value of period observed and recorded lower three thermocouples 3a, 3b, 3c and the output valve of contact high temperature sensor, the temperature curve utilizing the 7th step process to obtain, completes the calibration of contact high temperature sensor.
The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, on the premise of without departing from this utility model principle; can also make some improvement and supplement, these improve and supplement and also should be regarded as protection domain of the present utility model.
Claims (4)
1. the calibrating installation being applicable to contact high temperature sensor; it is characterized in that: include thermal source (1) and be arranged on the temperature standard of thermal source (1) side; described temperature standard has one piece of center and is provided with the thin cylindrical high-temperature alloy (2) of temperature sensor installation site (4); it is welded with three thermocouples (3a, 3b, 3c) away from the surface of thermal source (1) by triangle disposition position annulate shaft at high-temperature alloy (2), outside whole thermocouples, is set with protection sleeve pipe (5).
The calibrating installation being applicable to contact high temperature sensor the most according to claim 1, it is characterized in that: three thermocouples (3a, 3b, 3c) are the most equal with the spacing of high-temperature alloy (2) center, the angle that the most any two thermocouples and high-temperature alloy center (2) are formed is 120 °.
The calibrating installation being applicable to contact high temperature sensor the most according to claim 1 and 2, it is characterized in that: three thermocouples (3a, 3b, 3c) are welded on high-temperature alloy (2), each thermocouple pad with high-temperature alloy (2) is coated with the high-temp glue of resistance to 1700 DEG C of high temperature.
The calibrating installation being applicable to contact high temperature sensor the most according to claim 1 and 2; the contact high temperature sensor of calibration it is provided with at temperature sensor installation site (4) place at high-temperature alloy (2) center; the locus of thermal source (1) flame can be adjusted by sensor by three-dimensional adjusting mechanism, it is ensured that the center at center alignment high-temperature alloy (2) of flame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521076091.3U CN205449332U (en) | 2015-12-22 | 2015-12-22 | Calibrating device suitable for contact high temperature temperature sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521076091.3U CN205449332U (en) | 2015-12-22 | 2015-12-22 | Calibrating device suitable for contact high temperature temperature sensor |
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| CN205449332U true CN205449332U (en) | 2016-08-10 |
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| CN201521076091.3U Active CN205449332U (en) | 2015-12-22 | 2015-12-22 | Calibrating device suitable for contact high temperature temperature sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387954A (en) * | 2015-12-22 | 2016-03-09 | 陕西电器研究所 | Calibration device suitable for contact-type high temperature sensor |
| CN109991270A (en) * | 2019-04-08 | 2019-07-09 | 包头稀土研究院 | Magnetothermal effect measuring instrument temperature sensor fixing means |
-
2015
- 2015-12-22 CN CN201521076091.3U patent/CN205449332U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387954A (en) * | 2015-12-22 | 2016-03-09 | 陕西电器研究所 | Calibration device suitable for contact-type high temperature sensor |
| CN109991270A (en) * | 2019-04-08 | 2019-07-09 | 包头稀土研究院 | Magnetothermal effect measuring instrument temperature sensor fixing means |
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