CN105509921A - Temperature sensor taking metal or alloy as temperature sensing probe and manufacture method and temperature correction method of temperature sensor - Google Patents
Temperature sensor taking metal or alloy as temperature sensing probe and manufacture method and temperature correction method of temperature sensor Download PDFInfo
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- CN105509921A CN105509921A CN201610020400.8A CN201610020400A CN105509921A CN 105509921 A CN105509921 A CN 105509921A CN 201610020400 A CN201610020400 A CN 201610020400A CN 105509921 A CN105509921 A CN 105509921A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/04—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured not forming one of the thermoelectric materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
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Abstract
The invention relates to a temperature sensor taking metal or alloy as a temperature sensing probe, a manufacture method of the temperature sensor and a temperature correction method of the temperature sensor, wherein metal or alloy with a high melting point is manufactured into a temperature sensing element of the temperature sensor; ultrahigh temperature ceramics, such as zirconium diboride composite ceramic, and corundum are manufactured into a protective tube of the temperature sensor; the temperature sensor manufactured according to a temperature correction technology can be used for measuring the temperature of a temperature field of 2000-3000 DEG C. The temperature sensor taking the metal or alloy as the temperature sensing probe provided by the invention has the advantages that the manufacture method is simple in technology, materials are extensively obtained, and the temperature sensor is suitable for mass industrial production; the temperature correction method of the manufactured temperature sensor is simple, convenient and practical.
Description
Technical field
The present invention relates to temperature sensor technology field, a kind of specifically take metal or alloy as the temperature sensor of temperature-sensing probe and making and school temperature method.
Background technology
Superhigh temperature ceramic material is boride and the carbide ceramics material that a class has the transition metal of higher melt (>3000 DEG C) and other premium properties.Zirconium diboride is as the one of superhigh temperature ceramic material, and it has the plurality of advantages such as high-melting-point, high rigidity, good electric conductivity, thermal conductivity, is widely used in the fields such as high temperature resistant structure ceramics, fire resistive material, electrode material and nuclear control material.But its fragility is large, bending strength is not high, and under high temperature, the shortcoming such as oxidizable, constrains its range of application.For this reason, people adopt the exploitation of multiple improvement means dissimilar
zrB 2 base composite ceramic;
zrB 2 -SiCcomposite ceramics is as the one of superhigh temperature ceramic material, and its oxidative resistance obtains certain raising, and, be applied to science and techniques of defence field, achieve good antioxidant effect, based on
zrB 2 -SiCcomposite ceramic material has the feature of high-melting-point, high rigidity, good electric conductivity, thermal conductivity.
Now have been reported,
zrB 2 -SiCcomposite ceramic material, can be realized by multiple shaping mode, can sinter and form under vacuum condition and atmospheric condition.
The aerial maximum operation (service) temperature of industrial platinum Pt Rh rhodium thermocouple (Type B) is 1800 DEG C, although, the serviceability temperature of Wolfram rhenium heat electric couple under vacuum or inert gas can reach more than 2200 DEG C, but, because the inoxidizability of W-Re material is poor, comparatively responsive to oxygen content, observe in test, when inert gas has the oxygen of trace, even if oxygen content is in (1 ~ 2) × 10
-6time, Wolfram rhenium heat electric couple also can drift about.
The people such as Zhou Senan utilize zirconium diboride composite ceramics temperature-sensing element, using zirconium diboride composite ceramic material as protection tube, platinum-rhodium wire is as lead body, high-temperature insulation packing material, high-temperature insulation ceramic bead, terminal box and pyroelectric signal converter.
Relevant report display, tungsten-molybdenum thermocouple measurement range is 0-2400 DEG C, and iridium-iridium rhodium thermocouple measurement range is 0-2100 DEG C.
But the above-mentioned thermopair listed and sensor, only have Wolfram rhenium heat electric couple to carry out standardized production, market is difficult to see other products and sells.Therefore, research superhigh temperature thermopair and hyperthermic temperature sensor, be very urgent further.
Summary of the invention
The object of this invention is to provide a kind of take metal or alloy as the temperature sensor of temperature-sensing probe and making and school temperature method.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of take metal or alloy as the temperature sensor of temperature-sensing probe, comprise temperature-sensing element, lead body, insulating ceramic film, protection tube, penetration pipe and terminal box, one end open is closed in described protection tube one end, the self-styled closed end of protection tube is made up of to openend high temperature resistant protection tube and corundum protection tube, corundum protection tube is socketed in outside high temperature resistant protection tube, and be provided with high temperature resistant bonding oxidant layer between the inwall of corundum protection tube one end and high temperature resistant protection tube outer wall, the other end of corundum protection tube is tightly connected by metal tube and terminal box, temperature-sensing element is arranged in protection tube, one end of temperature-sensing element is arranged on bottom protection tube blind end, the other end offers the blind hole inserted for lead body, and bottom temperature-sensing element and protection tube blind end between be provided with insulating ceramic film, insulating packing layer is provided with between temperature-sensing element and protection tube inwall, described penetration pipe is set in outside lead body, penetration pipe is arranged in protection tube, and lead body one end is connected with temperature-sensing element, the other end stretches out outside protection tube and is connected with the binding post in terminal box.
Described temperature-sensing element takes the shape of the letter U, and its link is arranged on bottom protection tube blind end, and two external parts are connected with lead body I and lead body II respectively.
Described lead body is made up of the alloy material of platinum-rhodium wire, iridium wire, iridium rhodium silk, molybdenum rhenium silk, hafnium filament, iridium tungsten filament, tungsten filament, rhenium silk, molybdenum filament or iridium, rhodium, molybdenum, rhenium, hafnium, tungsten.
Described penetration pipe is made up of aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium carbide ceramics, boron carbide ceramics, nitride ceramics, boride ceramics or carbide ceramics.
Described high temperature resistant protection tube is made up of zirconium diboride composite ceramics, aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium boride ceramic, zirconium carbide ceramics, boron carbide ceramics, nitride ceramics, boride ceramics, carbide ceramics, tungsten, metal molybdenum or its alloy.
Described insulating ceramic film be with protection tube blind end bottom the arc surfaced that fits.
Be a method for making for the temperature sensor of temperature-sensing probe as above with metal or alloy, comprise the following steps:
Step one: first according to the performance of temperature, environment for use, probe material, selects protection tube material, then according to the performance of selected materials, makes high temperature resistant protection tube and corundum protection tube by traditional slip-casting shaping process, hot-forming sintering process;
Step 2: utilize metal or alloy to make temperature-sensing element probe, its interface, end is drilled with diameter is 0.2-5mm, the degree of depth is the blind hole of 5-20mm;
Step 3: lead body injected in the blind hole of temperature-sensing element end, makes lead body and temperature-sensing element link together by the mode of welding;
Step 4: penetration pipe is set in outside lead body;
Step 5: insulating ceramic film is fixed on bottom high temperature resistant protection tube;
Step 6: high temperature resistant protection tube and corundum protection tube high temperature resistant binder are bonded together, composition protection tube;
Step 7: temperature-sensing element and cover are had the lead body of penetration pipe to inject in protection tube, and inject insulating packing between temperature-sensing element and protection tube inwall;
Step 8: metal tube is sealedly connected between corundum protection tube and terminal box, the external part of lead body is connected on the binding post of terminal box, covers terminal box.
A kind of as above take metal or alloy as the school temperature method of the temperature sensor of temperature-sensing probe, take high-precision infrared thermometer as benchmark, the material of 1 is approximately equal to as reference block using radiation coefficient, relatively correction refractory metal or alloy are as temperature-sensing element electrical quantity at different temperatures, on the horizontal line of the center line both sides in a high temperature school temperature trial furnace, fabrication and installation hole respectively, one high-precision infrared thermometer is installed, another inserts temperature sensor as above, temperature sensor terminals are connected on electrical property test instrument, first measure the corresponding relation of temperature and electrical property, again in unit for electrical property parameters input instrument, instrument demonstrates the temperature consistent with high-precision infrared thermometer, under vacuum or inert gas conditions, maximum operation (service) temperature can reach 3300 DEG C in theory.
The material that described radiation coefficient is approximately equal to 1 is graphite material.
Beneficial effect of the present invention:
Provided by the invention take metal or alloy as the temperature sensor of temperature-sensing probe, refractory metal or alloy is utilized to make the temperature-sensing element of temperature sensor, using the superhigh temperature ceramics such as zirconium diboride composite ceramics and corundum as protecting tube for temp. sensor, through the temperature sensor of temperature correction fabrication techniques, the temperature of 2000-3000 DEG C of warm field can be measured; Provided by the invention with metal or alloy be the temperature sensor production method technique of temperature-sensing probe simple, draw materials extensively, be applicable to mass industrialized production; And obtained temperature sensor temperature correction method is simple, convenient and practical.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention;
Reference numeral: 1, insulating ceramic film, 2, high temperature resistant protection tube, 3, temperature-sensing element, 4, insulating packing layer; 5, high temperature resistant adhesive-layer, 6, alundum tube, 7, penetration pipe, 8, metal tube; 9, lead body I, 10, lead body II, 11, binding post, 12, terminal box.
Embodiment
Below in conjunction with embodiment, the present invention is further elaborated.
As shown in the figure: a kind of take metal or alloy as the temperature sensor of temperature-sensing probe, comprise temperature-sensing element, lead body, insulating ceramic film, protection tube, penetration pipe and terminal box, one end open is closed in described protection tube one end, the self-styled closed end of protection tube is made up of to openend high temperature resistant protection tube and corundum protection tube, corundum protection tube is socketed in outside high temperature resistant protection tube, and be provided with high temperature resistant bonding oxidant layer between the inwall of corundum protection tube one end and high temperature resistant protection tube outer wall, the other end of corundum protection tube is tightly connected by metal tube and terminal box, temperature-sensing element is arranged in protection tube, one end of temperature-sensing element is arranged on bottom protection tube blind end, the other end offers the blind hole inserted for lead body, and bottom temperature-sensing element and protection tube blind end between be provided with insulating ceramic film, described insulating ceramic film be with protection tube blind end bottom the arc surfaced that fits, insulating packing layer is provided with between temperature-sensing element and protection tube inwall, described penetration pipe is set in outside lead body, penetration pipe is arranged in protection tube, and lead body one end is connected with temperature-sensing element, the other end stretches out outside protection tube and is connected with the binding post in terminal box, described temperature-sensing element takes the shape of the letter U, its link is arranged on bottom protection tube blind end, two external parts are connected with lead body I and lead body II respectively, described lead body is made up of the alloy material of platinum-rhodium wire, iridium wire, iridium rhodium silk, molybdenum rhenium silk, hafnium filament, iridium tungsten filament, tungsten filament, rhenium silk, molybdenum filament or iridium, rhodium, molybdenum, rhenium, hafnium, tungsten, described penetration pipe is made up of aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium carbide ceramics, boron carbide ceramics, nitride ceramics, boride ceramics or carbide ceramics, described high temperature resistant protection tube is made up of zirconium diboride composite ceramics, aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium boride ceramic, zirconium carbide ceramics, boron carbide ceramics, nitride ceramics, boride ceramics, carbide ceramics, tungsten, metal molybdenum or its alloy.
Be a method for making for the temperature sensor of temperature-sensing probe as above with metal or alloy, comprise the following steps:
Step one: first according to the performance of temperature, environment for use, probe material, selects protection tube material, then according to the performance of selected materials, makes high temperature resistant protection tube and corundum protection tube by traditional slip-casting shaping process, hot-forming sintering process;
Step 2: utilize metal or alloy to make temperature-sensing element probe, its interface, end is drilled with diameter is 0.2-5mm, the degree of depth is the blind hole of 5-20mm;
Step 3: lead body injected in the blind hole of temperature-sensing element end, makes lead body and temperature-sensing element link together by the mode of welding;
Step 4: penetration pipe is set in outside lead body;
Step 5: insulating ceramic film is fixed on bottom high temperature resistant protection tube;
Step 6: high temperature resistant protection tube and corundum protection tube high temperature resistant binder are bonded together, composition protection tube;
Step 7: temperature-sensing element and cover are had the lead body of penetration pipe to inject in protection tube, and inject insulating packing between temperature-sensing element and protection tube inwall;
Step 8: metal tube is sealedly connected between corundum protection tube and terminal box, the external part of lead body is connected on the binding post of terminal box, covers terminal box.
The principle of thermometric is after metal or alloy probes sense to temperature, by the heat transfer of metal or alloy, the contact point temperature of lead body is raised, the electrical property of lead body presents linear change along with the rising of temperature, by intelligent instrument transform electrical signals be Temperature displaying out.
A kind of as above take metal or alloy as the school temperature method of the temperature sensor of temperature-sensing probe, take high-precision infrared thermometer as benchmark, the graphite material of 1 is approximately equal to as reference block using radiation coefficient, relatively correction refractory metal or alloy are as temperature-sensing element electrical quantity at different temperatures, on the horizontal line of the center line both sides in a high temperature school temperature trial furnace, fabrication and installation hole respectively, one high-precision infrared thermometer is installed, another inserts temperature sensor as above, temperature sensor terminals are connected on electrical property test instrument, first measure the corresponding relation of temperature and electrical property, again in unit for electrical property parameters input instrument, instrument demonstrates the temperature consistent with high-precision infrared thermometer, under vacuum or inert gas conditions, maximum operation (service) temperature can reach 3300 DEG C in theory.
Zirconium diboride composite ceramic material refers to the adding material such as matrix material and silit using zirconium diboride as composite ceramics, by more than 2000 DEG C hot pressed sinterings or normal pressure-sintered method, and the zirconium diboride composite ceramic material be made.Now have been reported,
zrB 2 -SiCcomposite ceramic material, can be realized by multiple shaping mode, can sinter and form under vacuum condition and atmospheric condition.
The fusing point of tungsten 3421.85 DEG C, density 19.1g/cm
3;
The fusing point of metal molybdenum 2695 DEG C, density 10.3g/cm
3;
The fusing point of metal rhodium 1962.85 DEG C, density 12.5g/cm
3;
The fusing point of rhenium metal 3181 DEG C, density 20.53g/cm
3;
The fusing point of metal hafnium 2230.85 DEG C, density 13.3g/cm
3;
The fusing point of metal iridium 2410 DEG C, density 22.42g/cm
3;
Above-mentioned refractory metal or the alloy of utilizing of the present invention makes temperature sensor as the probe of temperature-sensing element, can measure the temperature of 2000-3300 DEG C of warm field.
Claims (9)
1. one kind take metal or alloy as the temperature sensor of temperature-sensing probe, it is characterized in that: comprise temperature-sensing element, lead body, insulating ceramic film, protection tube, penetration pipe and terminal box, one end open is closed in described protection tube one end, the self-styled closed end of protection tube is made up of to openend high temperature resistant protection tube and corundum protection tube, corundum protection tube is socketed in outside high temperature resistant protection tube, and be provided with high temperature resistant bonding oxidant layer between the inwall of corundum protection tube one end and high temperature resistant protection tube outer wall, the other end of corundum protection tube is tightly connected by metal tube and terminal box, temperature-sensing element is arranged in protection tube, one end of temperature-sensing element is arranged on bottom protection tube blind end, the other end offers the blind hole inserted for lead body, and bottom temperature-sensing element and protection tube blind end between be provided with insulating ceramic film, insulating packing layer is provided with between temperature-sensing element and protection tube inwall, described penetration pipe is set in outside lead body, penetration pipe is arranged in protection tube, and lead body one end is connected with temperature-sensing element, the other end stretches out outside protection tube and is connected with the binding post in terminal box.
2. be the temperature sensor of temperature-sensing probe as claimed in claim 1 with metal or alloy, it is characterized in that: described temperature-sensing element takes the shape of the letter U, its link is arranged on bottom protection tube blind end, and two external parts are connected with lead body I and lead body II respectively.
3. be the temperature sensor of temperature-sensing probe as claimed in claim 1 with metal or alloy, it is characterized in that: described lead body is made up of the alloy material of platinum-rhodium wire, iridium wire, iridium rhodium silk, molybdenum rhenium silk, hafnium filament, iridium tungsten filament, tungsten filament, rhenium silk, molybdenum filament or iridium, rhodium, molybdenum, rhenium, hafnium, tungsten.
4. be the temperature sensor of temperature-sensing probe as claimed in claim 1 with metal or alloy, it is characterized in that: described penetration pipe is made up of aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium carbide ceramics, boron carbide ceramics, nitride ceramics, boride ceramics or carbide ceramics.
5. be the temperature sensor of temperature-sensing probe as claimed in claim 1 with metal or alloy, it is characterized in that: described high temperature resistant protection tube is made up of zirconium diboride composite ceramics, aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium boride ceramic, zirconium carbide ceramics, boron carbide ceramics, nitride ceramics, boride ceramics, carbide ceramics, tungsten, metal molybdenum or its alloy.
6. as claimed in claim 1 take metal or alloy as the temperature sensor of temperature-sensing probe, it is characterized in that: described insulating ceramic film be with protection tube blind end bottom the arc surfaced that fits.
7. be a method for making for the temperature sensor of temperature-sensing probe as claimed in claim 1 with metal or alloy, it is characterized in that, comprise the following steps:
Step one: first according to the performance of temperature, environment for use, probe material, selects protection tube material, then according to the performance of selected materials, makes high temperature resistant protection tube and corundum protection tube by traditional slip-casting shaping process, hot-forming sintering process;
Step 2: utilize metal or alloy to make temperature-sensing element probe, its interface, end is drilled with diameter is 0.2-5mm, the degree of depth is the blind hole of 5-20mm;
Step 3: lead body injected in the blind hole of temperature-sensing element end, makes lead body and temperature-sensing element link together by the mode of welding;
Step 4: penetration pipe is set in outside lead body;
Step 5: insulating ceramic film is fixed on bottom high temperature resistant protection tube;
Step 6: high temperature resistant protection tube and corundum protection tube high temperature resistant binder are bonded together, composition protection tube;
Step 7: temperature-sensing element and cover are had the lead body of penetration pipe to inject in protection tube, and inject insulating packing between temperature-sensing element and protection tube inwall;
Step 8: metal tube is sealedly connected between corundum protection tube and terminal box, the external part of lead body is connected on the binding post of terminal box, covers terminal box.
8. one kind is the school temperature method of the temperature sensor of temperature-sensing probe as claimed in claim 1 with metal or alloy, it is characterized in that: take high-precision infrared thermometer as benchmark, the material of 1 is approximately equal to as reference block using radiation coefficient, relatively correction refractory metal or alloy are as temperature-sensing element electrical quantity at different temperatures, on the horizontal line of the center line both sides in a high temperature school temperature trial furnace, fabrication and installation hole respectively, one high-precision infrared thermometer is installed, another inserts temperature sensor as above, temperature sensor terminals are connected on electrical property test instrument, first measure the corresponding relation of temperature and electrical property, again in unit for electrical property parameters input instrument, instrument demonstrates the temperature consistent with high-precision infrared thermometer, under vacuum or inert gas conditions, maximum operation (service) temperature can reach 3300 DEG C in theory.
9. as claimed in claim 8 take metal or alloy as the school temperature method of the temperature sensor of temperature-sensing probe, it is characterized in that: the material that described radiation coefficient is approximately equal to 1 is graphite material.
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| CN201610020400.8A CN105509921B (en) | 2016-01-13 | 2016-01-13 | Using metal or alloy as the temperature sensor of temperature-sensing probe and production and school temperature method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271070A (en) * | 2016-12-08 | 2017-10-20 | 中国航空工业集团公司北京长城计量测试技术研究所 | Ventilation type high temperature sensor |
| CN108303183A (en) * | 2018-04-11 | 2018-07-20 | 中国电子科技集团公司第三十四研究所 | Proximity wide broadband radiation pyrometer |
| CN108645527A (en) * | 2018-05-15 | 2018-10-12 | 安徽天卓信息技术有限公司 | A kind of heat safe temperature sensor |
| CN113654689A (en) * | 2021-08-11 | 2021-11-16 | 山西大学 | Contact measurement method for high-temperature gas temperature based on steady-state energy flow balance relation |
| CN114046891A (en) * | 2021-09-18 | 2022-02-15 | 湖南骅骝新材料有限公司 | High-temperature sensor capable of continuously and rapidly measuring temperature of molten steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108303183B (en) * | 2018-04-11 | 2023-06-20 | 中国电子科技集团公司第三十四研究所 | Proximity broadband optical pyrometer |
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| CN113654689A (en) * | 2021-08-11 | 2021-11-16 | 山西大学 | Contact measurement method for high-temperature gas temperature based on steady-state energy flow balance relation |
| CN114046891A (en) * | 2021-09-18 | 2022-02-15 | 湖南骅骝新材料有限公司 | High-temperature sensor capable of continuously and rapidly measuring temperature of molten steel |
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|---|---|
| CN105509921B (en) | 2019-06-07 |
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