CN105509921B - Using metal or alloy as the temperature sensor of temperature-sensing probe and production and school temperature method - Google Patents

Using metal or alloy as the temperature sensor of temperature-sensing probe and production and school temperature method Download PDF

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Publication number
CN105509921B
CN105509921B CN201610020400.8A CN201610020400A CN105509921B CN 105509921 B CN105509921 B CN 105509921B CN 201610020400 A CN201610020400 A CN 201610020400A CN 105509921 B CN105509921 B CN 105509921B
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temperature
protection pipe
ceramics
pipe
metal
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CN105509921A (en
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安俊超
周森安
李豪
李县辉
郑传涛
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LUOYANG SIGMA HIGH TEMPERATURE ELECTRIC FURNACE Co.,Ltd.
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Luoyang Thousands Of Degrees Of Ultra High Temperature Sensor Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02Measuring 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
    • G01K7/04Measuring 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00Testing or calibrating of thermometers
    • G01K15/005Calibration

Abstract

The present invention relates to a kind of using metal or alloy as the temperature sensor of temperature-sensing probe and production and school temperature method; the temperature-sensing element of temperature sensor is made using refractory metal or alloy; using the superhigh temperature ceramics such as zirconium diboride composite ceramics and corundum as protecting tube for temperature sensor; by the temperature sensor that temperature correction technology is made, the temperature of 2000-3000 DEG C of thermal field can be measured;It is provided by the invention extensive using metal or alloy as the temperature sensor production method simple process of temperature-sensing probe, materials, it is suitble to large-scale industrial production;And obtained temperature sensor temperature correction method is simple, it is convenient and practical.

Description

Using metal or alloy as the temperature sensor of temperature-sensing probe and production and school temperature method
Technical field
It is specifically a kind of using metal or alloy as the temperature of temperature-sensing probe the present invention relates to temperature sensor technology field Spend sensor and production and school temperature method.
Background technique
Superhigh temperature ceramic material is a kind of transition metal with higher melt (> 3000 DEG C) and other excellent performances Boride and carbide ceramics material.The one kind of zirconium diboride as superhigh temperature ceramic material, it have high-melting-point, high rigidity, Many advantages, such as good electric conductivity, thermal conductivity, be widely used in high temperature resistant structure ceramics, refractory material, electrode material with And in the fields such as nuclear control material.But the disadvantages of its brittleness is big, and bending strength is not high, oxidizable under high temperature, restricts its application Range.For this purpose, people develop different types of ZrB using a variety of improvement means2Base composite ceramic;ZrB2- SiC composite ceramics are made For one kind of superhigh temperature ceramic material, its oxidative resistance has obtained certain raising, moreover, being applied to science and techniques of defence neck Domain achieves preferable antioxidant effect, is based on ZrB2- SiC composite ceramic material has high-melting-point, high rigidity, good leads Electrically, the characteristics of thermal conductivity.
It has been had been reported that, ZrB2- SiC composite ceramic material can realize by a variety of molding modes, can be true It is sintered under the conditions of empty condition and atmosphere.
The aerial maximum operation (service) temperature of industrial platinum Pt Rh rhodium thermocouple (Type B) is 1800 DEG C, although, W-Re heat Use temperature of the galvanic couple under vacuum or inert gas can achieve 2200 DEG C or more, still, due to the antioxygen of W-Re material The property changed is poor, more sensitive to oxygen content, observes in test, when inert gas has micro oxygen, even if oxygen content is (1 ~2) × 10-6When, Wolfram rhenium heat electric couple can also drift about.
Zhou Senan et al. using zirconium diboride composite ceramics temperature-sensing element, using zirconium diboride composite ceramic material as protection Pipe, platinum-rhodium wire are converted as lead body, high-temperature insulation packing material, high-temperature insulation ceramic bead, terminal box and pyroelectric signal Device.
Related report display, tungsten-molybdenum thermocouple measurement range are 0-2400 DEG C, and iridium-iridium rhodium thermocouple measurement range is 0- 2100℃。
But the above-mentioned thermocouple and sensor listed, only Wolfram rhenium heat electric couple have carried out standardized production, in the market very Difficulty sees the sale of other products.Therefore, superhigh temperature thermocouple and hyperthermic temperature sensor are further studied, is very urgent 's.
Summary of the invention
The object of the present invention is to provide a kind of using metal or alloy as the temperature sensor of temperature-sensing probe and production and school temperature Method.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
It is a kind of using metal or alloy as the temperature sensor of temperature-sensing probe, including temperature-sensing element, lead body, insulating ceramics Piece, protection pipe, penetration pipe and terminal box, the protection pipe is closed at one end open at one end, the self-styled closed end of protection pipe to open end by High temperature resistant protection pipe and corundum protection pipe composition, corundum protection pipe is socketed in outside high temperature resistant protection pipe, and corundum protection pipe one end Inner wall and high temperature resistant protection pipe outer wall between be equipped with high temperature resistant bonding oxidant layer, the other end of corundum protection pipe by metal tube with Terminal box is tightly connected, and temperature-sensing element is arranged in protection pipe, and one end of temperature-sensing element is arranged in protection pipe closed end bottom, separately The blind hole for lead body insertion is offered on one end, and insulating ceramics is equipped between temperature-sensing element and protection pipe closed end bottom Piece is equipped with insulating packing layer between temperature-sensing element and protection inside pipe wall, and the penetration pipe is set in outside lead body, penetration pipe setting In protection pipe, and lead body one end is connect with temperature-sensing element, and the other end stretches out the binding post outside protection pipe and in terminal box and connects It connects.
The temperature-sensing element is in U-shape, connecting pin setting in protection pipe closed end bottom, two extension ends respectively with lead Body I and lead body II connect.
The lead body by platinum-rhodium wire, iridium wire, iridium rhodium silk, molybdenum-rhenium silk, hafnium filament, iridium tungsten wire, tungsten wire, rhenium silk, molybdenum filament or Iridium, rhodium, molybdenum, rhenium, hafnium, tungsten alloy material be made.
The penetration pipe is by aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium carbide ceramics, carbon Change boron ceramics, nitride ceramics, boride ceramics or carbide ceramics to be made.
The high temperature resistant protection pipe by 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 are made.
The insulating ceramic film is the arc surfaced to fit with protection pipe closed end bottom.
It is a kind of as described above using metal or alloy as the production method of the temperature sensor of temperature-sensing probe, including following step It is rapid:
Step 1: first according to temperature, use environment, the performance for material of popping one's head in, selection protection tube material, further according to selected The performance of material makes high temperature resistant protection pipe by traditional slip-casting shaping process, hot-forming sintering process and corundum is protected Pipe;
Step 2: it is popped one's head in using metal or alloy production temperature-sensing element, it is 0.2- that diameter is drilled on its end interface 5mm, the blind hole that depth is 5-20mm;
Step 3: lead body is injected in the blind hole of temperature-sensing element end, makes lead body and temperature-sensitive member by welding Part links together;
Step 4: penetration pipe is set in outside lead body;
Step 5: insulating ceramic film is fixed on high temperature resistant protection bottom of the tube;
Step 6: it protects effective high temperature resistant binder to be bonded together high temperature resistant protection pipe and corundum, forms protection pipe;
Step 7: temperature-sensing element and the lead body for being cased with penetration pipe are injected in protection pipe, and in temperature-sensing element and protection Insulating packing is injected between inside pipe wall;
Step 8: metal tube is sealedly connected between corundum protection pipe and terminal box, and the stretching of lead body is connected to On the binding post of terminal box, terminal box is covered.
It is a kind of as described above using metal or alloy as the school temperature method of the temperature sensor of temperature-sensing probe, it is red with high precision On the basis of outer temperature measurer, 1 material is approximately equal to as reference block using radiation coefficient, compares correction refractory metal or alloy As the electrical parameter of temperature-sensing element at different temperatures, the horizontal line of the center line two sides in a high temperature school temperature trial furnace On, fabrication and installation hole, an installation high-precision infrared thermometer, another insertion temperature sensor as described above are warm respectively Sensor wire termination is spent on electrical property test instrument, first measures the corresponding relationship of temperature and electrical property, then unit for electrical property parameters It inputs in instrument, instrument is shown and the consistent temperature of high-precision infrared thermometer, under vacuum or inert gas conditions, theory Upper maximum operation (service) temperature can achieve 3300 DEG C.
The material that the radiation coefficient is approximately equal to 1 is graphite material.
Beneficial effects of the present invention:
It is provided by the invention using metal or alloy as the temperature sensor of temperature-sensing probe, utilize refractory metal or alloy system At the temperature-sensing element of temperature sensor, using the superhigh temperature ceramics such as zirconium diboride composite ceramics and corundum as temperature sensor protecting Pipe, by the temperature sensor that temperature correction technology is made, can measure the temperature of 2000-3000 DEG C of thermal field;The present invention What is provided is extensive as the temperature sensor production method simple process of temperature-sensing probe, materials using metal or alloy, is suitble to high-volume Industrialized production;And obtained temperature sensor temperature correction method is simple, it is convenient and practical.
Detailed description of the invention
Fig. 1 schematic structural view of the invention;
Appended drawing reference: 1, insulating ceramic film, 2, high temperature resistant protection pipe, 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.
Specific embodiment
The present invention is further elaborated With reference to embodiment.
It is as shown in the figure: it is a kind of using metal or alloy as the temperature sensor of temperature-sensing probe, including temperature-sensing element, lead body, Insulating ceramic film, protection pipe, penetration pipe and terminal box, the protection pipe is closed at one end open at one end, and the self-styled closed end of protection pipe is extremely Open end is made of high temperature resistant protection pipe and corundum protection pipe, and corundum protection pipe is socketed in outside high temperature resistant protection pipe, and corundum is protected It is equipped with high temperature resistant bonding oxidant layer between inner wall and high temperature resistant the protection pipe outer wall of pillar one end, the other end of corundum protection pipe passes through Metal tube and terminal box are tightly connected, and temperature-sensing element is arranged in protection pipe, and one end setting of temperature-sensing element is in protection duct occlusion Bottom is held, the blind hole for lead body insertion is offered on the other end, and be equipped between temperature-sensing element and protection pipe closed end bottom Insulating ceramic film, the insulating ceramic film are the arc surfaced to fit with protection pipe closed end bottom, temperature-sensing element and protection pipe Insulating packing layer is equipped between inner wall, the penetration pipe is set in outside lead body, and penetration pipe is arranged in protection pipe, and lead body One end is connect with temperature-sensing element, and the other end stretches out outside protection pipe to be connect with the binding post in terminal box, and the temperature-sensing element is in U Shape, connecting pin are arranged in protection pipe closed end bottom, and two extension ends are connect with lead body I and lead body II respectively;It is described Lead body by platinum-rhodium wire, iridium wire, iridium rhodium silk, molybdenum-rhenium silk, hafnium filament, iridium tungsten wire, tungsten wire, rhenium silk, molybdenum filament or iridium, rhodium, molybdenum, rhenium, Hafnium, tungsten alloy material be made;The penetration pipe by aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, Zirconium carbide ceramics, boron carbide ceramics, nitride ceramics, boride ceramics or carbide ceramics are made;The high temperature resistant protection pipe By zirconium diboride composite ceramics, aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium boride ceramic, carbon Change zircon ceramic, boron carbide ceramics, nitride ceramics, boride ceramics, carbide ceramics, tungsten, metal molybdenum or its alloy system At.
It is a kind of as described above using metal or alloy as the production method of the temperature sensor of temperature-sensing probe, including following step It is rapid:
Step 1: first according to temperature, use environment, the performance for material of popping one's head in, selection protection tube material, further according to selected The performance of material makes high temperature resistant protection pipe by traditional slip-casting shaping process, hot-forming sintering process and corundum is protected Pipe;
Step 2: it is popped one's head in using metal or alloy production temperature-sensing element, it is 0.2- that diameter is drilled on its end interface 5mm, the blind hole that depth is 5-20mm;
Step 3: lead body is injected in the blind hole of temperature-sensing element end, makes lead body and temperature-sensitive member by welding Part links together;
Step 4: penetration pipe is set in outside lead body;
Step 5: insulating ceramic film is fixed on high temperature resistant protection bottom of the tube;
Step 6: it protects effective high temperature resistant binder to be bonded together high temperature resistant protection pipe and corundum, forms protection pipe;
Step 7: temperature-sensing element and the lead body for being cased with penetration pipe are injected in protection pipe, and in temperature-sensing element and protection Insulating packing is injected between inside pipe wall;
Step 8: metal tube is sealedly connected between corundum protection pipe and terminal box, and the stretching of lead body is connected to On the binding post of terminal box, terminal box is covered.
The principle of thermometric be metal or alloy probes sense to temperature after, lead is made by the heat transfer of metal or alloy The contact point temperature of body increases, and linear change is presented in the electrical property of lead body as the temperature rises, is passing through intelligence instrument handle Electric signal is converted into temperature display and comes out.
It is a kind of as described above using metal or alloy as the school temperature method of the temperature sensor of temperature-sensing probe, it is red with high precision On the basis of outer temperature measurer, 1 graphite material is approximately equal to as reference block using radiation coefficient, compare correction refractory metal or Electrical parameter of the alloy as temperature-sensing element at different temperatures, the level of the center line two sides in a high temperature school temperature trial furnace On line, difference fabrication and installation hole, an installation high-precision infrared thermometer, another is inserted into temperature sensor as described above, Temperature sensor terminal connects on electrical property test instrument, first measures the corresponding relationship of temperature and electrical property, then electrical property is joined In number input instrument, instrument is shown and the consistent temperature of high-precision infrared thermometer, under vacuum or inert gas conditions, reason It can achieve 3300 DEG C by upper maximum operation (service) temperature.
Zirconium diboride composite ceramic material refers to that basis material and silicon carbide using zirconium diboride as composite ceramics etc. add Add material, by 2000 DEG C or more hot pressed sinterings or normal pressure-sintered method, the zirconium diboride composite ceramics material that is made Material.It has been had been reported that, ZrB2- SiC composite ceramic material can realize by a variety of molding modes, can be in vacuum item It is sintered under the conditions of part and atmosphere.
3421.85 DEG C of the fusing point of tungsten, density 19.1g/cm3
2695 DEG C of the fusing point of metal molybdenum, density 10.3g/cm3
1962.85 DEG C of the fusing point of metal rhodium, density 12.5g/cm3
3181 DEG C of the fusing point of rhenium metal, density 20.53g/cm3
2230.85 DEG C of the fusing point of metal hafnium, density 13.3g/cm3
2410 DEG C of the fusing point of metal iridium, density 22.42g/cm3
Of the invention is made temperature sensor using above-mentioned refractory metal or alloy as the probe of temperature-sensing element, can be with Measure the temperature of 2000-3300 DEG C of thermal field.

Claims (4)

1. it is a kind of using metal or alloy as the production method of the temperature sensor of temperature-sensing probe, it is described using metal or alloy as temperature-sensitive The temperature sensor of probe includes temperature-sensing element, lead body, insulating ceramic film, protection pipe, penetration pipe and terminal box, the protection Manage closed at one end open at one end, the self-styled closed end of protection pipe to open end is made of high temperature resistant protection pipe and corundum protection pipe, corundum Protection pipe is socketed in outside high temperature resistant protection pipe, and is equipped between the inner wall of corundum protection pipe one end and high temperature resistant protection pipe outer wall resistance to The other end of high temperature bond oxidant layer, corundum protection pipe is tightly connected by metal tube and terminal box, and temperature-sensing element setting is being protected In pipe, one end setting of temperature-sensing element offers the blind hole for lead body insertion on protection pipe closed end bottom, the other end, and It is equipped with insulating ceramic film between temperature-sensing element and protection pipe closed end bottom, is equipped with insulation between temperature-sensing element and protection inside pipe wall Packing layer, the penetration pipe are set in outside lead body, and penetration pipe is arranged in protection pipe, and lead body one end and temperature-sensing element connect It connects, the other end stretches out outside protection pipe to be connect with the binding post in terminal box;The temperature-sensing element is in U-shape, and connecting pin setting exists Protection pipe closed end bottom, two extension ends are connect with lead body I and lead body II respectively;The insulating ceramic film be and protection The arc surfaced that duct occlusion end bottom fits, which comprises the following steps:
Step 1: first according to temperature, use environment, the performance for material of popping one's head in, selection protection tube material, further according to selected materials Performance, pass through traditional slip-casting shaping process, hot-forming sintering process makes high temperature resistant protection pipe and corundum protection pipe;
Step 2: it is popped one's head in using metal or alloy production temperature-sensing element, it is 0.2-5mm, depth that diameter is drilled on its end interface Degree is the blind hole of 5-20mm;
Step 3: lead body is injected in the blind hole of temperature-sensing element end, by welding connects lead body and temperature-sensing element It is connected together;
Step 4: penetration pipe is set in outside lead body;
Step 5: insulating ceramic film is fixed on high temperature resistant protection bottom of the tube;
Step 6: it protects effective high temperature resistant binder to be bonded together high temperature resistant protection pipe and corundum, forms protection pipe;
Step 7: temperature-sensing element and the lead body for being cased with penetration pipe are injected in protection pipe, and in temperature-sensing element and protection pipe Insulating packing is injected between wall;
Step 8: metal tube is sealedly connected between corundum protection pipe and terminal box, and the stretching of lead body is connected to wiring On the binding post of box, terminal box is covered.
2. as described in claim 1 using metal or alloy as the production method of the temperature sensor of temperature-sensing probe, feature exists In: the lead body by platinum-rhodium wire, iridium wire, iridium rhodium silk, molybdenum-rhenium silk, hafnium filament, iridium tungsten wire, tungsten wire, rhenium silk, molybdenum filament or iridium, rhodium, Molybdenum, rhenium, hafnium, tungsten alloy material be made.
3. as described in claim 1 using metal or alloy as the production method of the temperature sensor of temperature-sensing probe, feature exists In: the penetration pipe is by aluminium oxide ceramics, magnesia ceramics, zirconia ceramics, boron nitride ceramics, zirconium carbide ceramics, boron carbide Ceramics, nitride ceramics, boride ceramics or carbide ceramics are made.
4. as described in claim 1 using metal or alloy as the production method of the temperature sensor of temperature-sensing probe, feature exists In: the high temperature resistant protection pipe is by 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, metal Tungsten, metal molybdenum or its alloy are made.
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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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