CN108955927A - One kind being suitable for the Wolfram rhenium heat electric couple of oxidation and reducing atmosphere at 800 ~ 2300 DEG C - Google Patents
One kind being suitable for the Wolfram rhenium heat electric couple of oxidation and reducing atmosphere at 800 ~ 2300 DEG C Download PDFInfo
- Publication number
- CN108955927A CN108955927A CN201810822162.1A CN201810822162A CN108955927A CN 108955927 A CN108955927 A CN 108955927A CN 201810822162 A CN201810822162 A CN 201810822162A CN 108955927 A CN108955927 A CN 108955927A
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- CN
- China
- Prior art keywords
- heat electric
- electric couple
- rhenium heat
- wolfram rhenium
- oxidation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01K7/06—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 the thermoelectric materials being arranged one within the other with the junction at one end exposed to the object, e.g. sheathed type
Abstract
A kind of Wolfram rhenium heat electric couple being suitable for oxidation and reducing atmosphere at 800 ~ 2300 DEG C provided by the invention; it is made of terminal box and thermocouple body; thermocouple body includes the outside protective pipe made of zirconium oxide, the interior protection pipe made of hafnium oxide in outside protective pipe and the Wolfram rhenium heat electric couple silk being arranged in interior protection pipe, tightly packed between outside protective pipe and interior protection pipe to have the first filler.One kind of the invention is aoxidized suitable for 800 ~ 2300 DEG C and the Wolfram rhenium heat electric couple of reducing atmosphere; by changing protection pipe material and fill material; the temperature-measuring range of Wolfram rhenium heat electric couple can be made to expand to high-temperature region from low-temperature space; make Wolfram rhenium heat electric couple that there is stronger high temperature resistant and oxidation resistance simultaneously; and can guarantee the stability of thermoelectrical potential, guarantee the accuracy of measurement.
Description
Technical field
The present invention relates to temperature measuring instrument technical field, more particularly to one kind be suitable at 800 ~ 2300 DEG C oxidation and
The Wolfram rhenium heat electric couple of reducing atmosphere.
Background technique
Wolfram rhenium heat electric couple is high temperature resisting thermocouple, has temperature-potential linear relationship good, thermal stability is reliable, and price is just
Suitable feature.It is mating with display instrument, it can directly measure the temperature of liquid, steam and gas medium etc..
Wolfram rhenium heat electric couple easily aoxidizes, suitable for being used in inertia or dry hydrogen, or with fine and close protection pipe make its with
Oxygen isolation could use.300 DEG C of tungsten or more in air, 600 DEG C of rhenium or more start to aoxidize, the tungsten-rhenium alloy thermode after oxidation
Constantly attenuate, so that it is disconnected de-.Again because tungsten can be aoxidized prior to rhenium, thermode alloying component is caused to change, causes measurement potential drift.
It to prevent tungsten-rhenium alloy thermode from aoxidizing, is typically employed in pillar and vacuumizes or the methods of filling with inert gas, but after vacuumizing
Negative pressure is generated in pipe, tube wall is easily-deformable, ruptures, and filling with inert gas easily leads to tube wall explosion because of gas expansion.
Summary of the invention
In view of the above technical problems, it is suitable for that Primordial Qi is aoxidized and gone back at 800 ~ 2300 DEG C the object of the present invention is to provide one kind
The Wolfram rhenium heat electric couple of atmosphere, with excellent high temperature resistant property, and the use intensity of thermocouple at high temperature is high.
To achieve the object of the present invention, one kind of the invention is suitable for the W-Re of oxidation and reducing atmosphere at 800 ~ 2300 DEG C
Thermocouple comprising terminal box and thermocouple body, the thermocouple body include the outside protective pipe made of zirconium oxide, position
In the interior protection pipe made of hafnium oxide in outside protective pipe and the Wolfram rhenium heat electric couple silk being arranged in interior protection pipe, described is outer
High temperature powder is filled between protection pipe and interior protection pipe.
Preferably, the plug for sealing Wolfram rhenium heat electric couple silk is equipped at the port of the outside protective pipe.
Further preferably, the plug is equipped with exhaust tube.
Further preferably, the high temperature powder is the high purity aluminium oxide powder that purity is 99% or more.
Further preferably, vacuum is kept between the outside protective pipe and interior protection pipe.
Compared with prior art, one kind of the invention is suitable for the W-Re thermoelectricity of oxidation and reducing atmosphere at 800 ~ 2300 DEG C
It is even, it is vacuumized using zirconium oxide outside protective pipe and hafnium oxide interior protection pipe, between outside protective pipe and interior protection pipe and filled with height
Warm powder can make the temperature-measuring range of Wolfram rhenium heat electric couple expand to high-temperature region from low-temperature space, while it is excellent to have Wolfram rhenium heat electric couple
High temperature resistant and oxidation resistance, and can guarantee the stability of thermoelectrical potential, measurement is accurate.
Detailed description of the invention
Fig. 1 is that one kind of one embodiment of the invention is suitable for the Wolfram rhenium heat electric couple of oxidation and reducing atmosphere at 800 ~ 2300 DEG C
Structural schematic diagram.
Specific embodiment
To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby cooperate embodiment detailed
It is described as follows.
Described one kind of the invention is suitable for the W-Re thermoelectricity of oxidation and reducing atmosphere at 800 ~ 2300 DEG C referring to Figure 1
Even structural schematic diagram comprising terminal box 1 and thermocouple body 2, thermocouple body 2 include zirconium oxide outside protective pipe 21, position
In in outside protective pipe 21 by hafnium oxide interior protection pipe 22 and the Wolfram rhenium heat electric couple silk 23 being arranged in interior protection pipe 22, outer protection
It is tightly packed between pipe 21 and interior protection pipe 22 to have high temperature powder 3.
In a preferred embodiment, being equipped at the port of the outside protective pipe 21 seals Wolfram rhenium heat electric couple silk 23
Plug 211；Further, plug 211 is equipped with exhaust tube 212.
In a preferred embodiment, the high temperature powder 3 being filled between outside protective pipe 21 and interior protection pipe 22
It is greater than 99% alumina powder for purity.
In yet another preferred embodiment, vacuum is kept between the interior protection pipe 21 and outside protective pipe 22.
In production, thermocouple wire 23 is placed in interior protection pipe 21 Wolfram rhenium heat electric couple of the invention, interior protection pipe 21 and outer
Cavity is formed between protection pipe 22, filled high-temperature powder, vacuumizes simultaneously in cavity, and on the one hand make high temperature powder filling closely knit,
Make to keep vacuum state in cavity simultaneously；Outside protective pipe uses zirconium oxide resistant to high temperature, and fusing point is at 2600 DEG C or more；So may be used
To guarantee high temperature resistance that thermocouple uses at high temperature and in a high temperauture environment use intensity.
One kind of the invention is suitable for the Wolfram rhenium heat electric couple of oxidation and reducing atmosphere at 800 ~ 2300 DEG C, is protected by changing
Tubing matter and fill material, and vacuum between interior outside protective pipe is kept, the temperature-measuring range of Wolfram rhenium heat electric couple can be made to expand from low-temperature space
It opens up to high-temperature region, while making Wolfram rhenium heat electric couple that there is stronger high temperature resistant and oxidation resistance, and can guarantee the stabilization of thermoelectrical potential
Property, guarantee the accuracy of temperature measurement.This product may replace the expensive platinum rhodium thermocouple in part.
The present invention is described by above-mentioned related embodiment, however above-described embodiment is only to implement example of the invention.
It must be noted that the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from spirit of the invention and
It is changed and retouched made by range, belongs to scope of patent protection of the invention.
Claims (5)
1. the Wolfram rhenium heat electric couple that one kind is suitable for oxidation and reducing atmosphere at 800 ~ 2300 DEG C, which is characterized in that the thermoelectricity
Even includes terminal box and thermocouple body, and the thermocouple body includes the outside protective pipe made of zirconium oxide, is located at outer guarantor
The interior protection pipe made of hafnium oxide in pillar and the Wolfram rhenium heat electric couple silk being arranged in interior protection pipe, the outside protective pipe
High temperature powder is filled between interior protection pipe.
2. a kind of Wolfram rhenium heat electric couple for being suitable for oxidation and reducing atmosphere at 800 ~ 2300 DEG C as described in claim 1, special
Sign is, the plug for sealing Wolfram rhenium heat electric couple silk is equipped at the port of the outside protective pipe.
3. a kind of Wolfram rhenium heat electric couple for being suitable for oxidation and reducing atmosphere at 800 ~ 2300 DEG C as claimed in claim 2, special
Sign is that the plug is equipped with exhaust tube.
4. a kind of Wolfram rhenium heat electric couple for being suitable for oxidation and reducing atmosphere at 800 ~ 2300 DEG C as described in claim 1, special
Sign is that the high temperature powder is the high purity aluminium oxide powder that purity is 99% or more.
5. a kind of Wolfram rhenium heat electric couple for being suitable for oxidation and reducing atmosphere at 800 ~ 2300 DEG C as described in claim 1, special
Sign is, keeps vacuum between the outside protective pipe and interior protection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810822162.1A CN108955927A (en) | 2018-07-24 | 2018-07-24 | One kind being suitable for the Wolfram rhenium heat electric couple of oxidation and reducing atmosphere at 800 ~ 2300 DEG C |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810822162.1A CN108955927A (en) | 2018-07-24 | 2018-07-24 | One kind being suitable for the Wolfram rhenium heat electric couple of oxidation and reducing atmosphere at 800 ~ 2300 DEG C |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108955927A true CN108955927A (en) | 2018-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810822162.1A Pending CN108955927A (en) | 2018-07-24 | 2018-07-24 | One kind being suitable for the Wolfram rhenium heat electric couple of oxidation and reducing atmosphere at 800 ~ 2300 DEG C |
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| Country | Link |
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| CN (1) | CN108955927A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2110216U (en) * | 1992-01-21 | 1992-07-15 | 东北工学院 | Substance type oxygen-proof tungsten-rhnium electric thermo-couple |
| CN2708284Y (en) * | 2004-07-03 | 2005-07-06 | 重庆仪表材料研究所 | Oxidation resistant tungsten-rhenium thermal couple |
| CN101034015A (en) * | 2007-04-04 | 2007-09-12 | 沈阳东大传感技术有限公司 | Wolfram rhenium heat electric couple having correcting and monitoring holes |
| CN105758543A (en) * | 2016-04-21 | 2016-07-13 | 洛阳西格马炉业股份有限公司 | High-melting metal or alloy thermocouple, manufacturing method thereof, and temperature correction method thereof |
| US20160231181A1 (en) * | 2013-09-20 | 2016-08-11 | Furuya Metal Co., Ltd. | Thermocouple and manufacturing method for same |
-
2018
- 2018-07-24 CN CN201810822162.1A patent/CN108955927A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2110216U (en) * | 1992-01-21 | 1992-07-15 | 东北工学院 | Substance type oxygen-proof tungsten-rhnium electric thermo-couple |
| CN2708284Y (en) * | 2004-07-03 | 2005-07-06 | 重庆仪表材料研究所 | Oxidation resistant tungsten-rhenium thermal couple |
| CN101034015A (en) * | 2007-04-04 | 2007-09-12 | 沈阳东大传感技术有限公司 | Wolfram rhenium heat electric couple having correcting and monitoring holes |
| US20160231181A1 (en) * | 2013-09-20 | 2016-08-11 | Furuya Metal Co., Ltd. | Thermocouple and manufacturing method for same |
| CN105758543A (en) * | 2016-04-21 | 2016-07-13 | 洛阳西格马炉业股份有限公司 | High-melting metal or alloy thermocouple, manufacturing method thereof, and temperature correction method thereof |
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