CN201025622Y - A nickel base armoured thermocouple - Google Patents
A nickel base armoured thermocouple Download PDFInfo
- Publication number
- CN201025622Y CN201025622Y CNU2007200340282U CN200720034028U CN201025622Y CN 201025622 Y CN201025622 Y CN 201025622Y CN U2007200340282 U CNU2007200340282 U CN U2007200340282U CN 200720034028 U CN200720034028 U CN 200720034028U CN 201025622 Y CN201025622 Y CN 201025622Y
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- CN
- China
- Prior art keywords
- armoured thermocouple
- thermocouple
- nickel
- temperature
- outer tube
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to the temperature measuring technology field in particular to a nickel based armored thermocouple which comprises a metal outer casing and a positive and a negative pole thermocouple wire which are arranged in the outer casing in an insulating way. The outer casing has the same material with the positive pole thermocouple wire. The utility model can be mainly used in a high temperature nickel chrome silicon - nickel silicon magnesium armored thermocouple and a nickel chrome - nickel silicon armored thermocouple. The highest using temperature amounts to 1280 DEG C and the stability of the high temperature of over 1000 DEG C is quite good. The temperature drift of over 1000 DEG C is smaller than plus or minus 3 DEG C and the service life is prolonged.
Description
Technical field
The utility model relates to the temperature-measuring element technical field, especially a kind of Ni-based armoured thermocouple.
Background technology
Armoured thermocouple is the thermocouple made from armoured thermocouple cable.It is with oxide the thermocouple wire insulation to be placed the flexual relevant sets zoarium of making through compacting in the metal sleeve.But have that volume is little, temperature-sensitive is sensitive, characteristics such as withstand voltage, shatter-proof, anticorrosion and free bend.
Armoured thermocouple is applicable to the thermometric of complex region, extensively in metallurgy, electric power, oil, chemical industry, aviation, shipbuilding and national defence scientific research department, is used for work atmospheres such as oxidation, neutrality, reduction as temperature element.
At present, domestic have high-temperature alloy steel GH30 and GH39, corrosion-resisting alloy steel Inconel, high temperature resistant stainless steel 310S, stainless acid resistant steel 1Cr18Ni9Ti etc. as armoured thermocouple cable metal sheath material commonly used.But can not satisfy the requirement of high temperature and stability with the Ni-based armoured thermocouple that these shell materials are processed into.Cause the required high stability thermocouple of domestic many military projects, national defence and various High-temp. kiln, mainly by import.Therefore have at ground exploitation and the shell material that Ni-based thermocouple has good chemical and physical compatibility, carry out global design, the high-temperature stability and the range of application that improve Ni-based armoured thermocouple are very urgent.
Summary of the invention
The technical problems to be solved in the utility model is: a kind of novel Ni-based armoured thermocouple is provided, overcomes the deficiency that existing Ni-based armoured thermocouple can not satisfy high temperature and stability requirement.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of Ni-based armoured thermocouple, comprise that metal jacket pipe and insulation place the positive and negative electrode thermocouple wire in the outer tube, and described outer tube has identical material with anodal thermo wires.
Further for high-temperature nickel-based armoured thermocouple: nickel chromium triangle silicon-nisiloy magnesium armoured thermocouple, the material of its outer tube and anodal thermo wires all are nichrosi; For high-temperature nickel-based armoured thermocouple: nickel chromium triangle-nisiloy armoured thermocouple, the material of its outer tube and anodal thermo wires all are nichrome.
The utility model proposes with positive electrode in the Ni-based thermocouple as the outer sleeve material of Ni-based armoured thermocouple.Because the thermocouple positive pole in its shell material and the sleeve pipe is the material of chemical composition of the same race, therefore have good chemical and physical compatibility, avoided some elemental diffusion under the high temperature, also just avoided the fierceness of thermoelectric potential to change; Owing to eliminated the difference of the different materials coefficient of expansion, make the stability of Ni-based armoured thermocouple and life-span all be greatly enhanced simultaneously.
The beneficial effects of the utility model are:
One, improve serviceability temperature: this armoured thermocouple is because outer tube and thermo wires positive pole are same material, its maximum operation (service) temperature can not reach the maximum operation (service) temperature of thermo wires because of the restriction of outer sleeve material, can bring up to 1280 ℃ from 800 ℃ (or 1100 ℃), thereby give full play to the high-temperature behavior of Ni-based thermocouple wire;
Two, solved the difficult problem of armoured thermocouple stability: especially the stability at the high temperature more than 1000 ℃ is greatly enhanced, and its temperature drift more than 1000 ℃ the time can be less than ± 3 ℃;
Three, improved the useful life of thermo wires: because the raising of thermo wires stability has also just prolonged the useful life of armoured thermocouple.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the cross-sectional end view of armoured thermocouple of the present utility model.
Among the figure 1, anodal thermo wires, 2, outer tube, 3, the negative pole thermo wires, 4, insulation filler.
Embodiment
Shown in the cross-sectional end view of a kind of armoured thermocouple with one group of positive and negative electrode thermo wires of enumerating of accompanying drawing 1, armoured thermocouple is with insulation filler 4-oxide anodal thermo wires 1,3 insulation of negative pole thermo wires to be placed the flexual relevant sets zoarium of making through compacting in the outer tube 2, the positive and negative electrode thermo wires of also built-in many groups in the outer tube 2.
Specific embodiment one:
A kind of nickel chromium triangle silicon-nisiloy magnesium armoured thermocouple, the material of anodal thermo wires is a nichrosi, the percentage by weight of nichrosi consists of: the chromium of 13.7-14.7%, the silicon of 1.2-1.6%, be not more than 0.01% the magnesium and the nickel of surplus, its outer tube adopts the nichrosi pipe identical with the material of anodal thermo wires.
Specific embodiment two:
A kind of nickel chromium triangle-nisiloy armoured thermocouple, the material of anodal thermo wires are nichrome, and the percentage by weight of nichrome consists of: 90% nickel and 10% chromium, its outer tube adopts the nichrome pipe identical with the material of anodal thermo wires.
In a word, because prior art does not adopt the material identical with anodal thermo wires with the outer tube of Ni-based armoured thermocouple, and the utility model makes outer tube and anodal thermo wires have identical material, making the thermocouple positive pole in its outer sleeve material and the sleeve pipe is the material of chemical composition of the same race, therefore had good chemistry and physical compatibility, avoid some elemental diffusion under the high temperature, also just avoided the fierceness of thermoelectric potential to change; Owing to eliminated the difference of the different materials coefficient of expansion, make the stability of armoured thermocouple and life-span all be greatly enhanced simultaneously.
Claims (3)
1. a Ni-based armoured thermocouple comprises that metal jacket pipe and insulation place the positive and negative electrode thermocouple wire in the outer tube, and it is characterized in that: described outer tube has identical material with anodal thermo wires.
2. a kind of Ni-based armoured thermocouple according to claim 1 is characterized in that: described armoured thermocouple is nickel chromium triangle silicon-nisiloy magnesium armoured thermocouple, and the material of its outer tube and anodal thermo wires all is a nichrosi.
3. a kind of Ni-based armoured thermocouple according to claim 1 is characterized in that: described armoured thermocouple is nickel chromium triangle-nisiloy armoured thermocouple, and the material of its outer tube and anodal thermo wires all is a nichrome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200340282U CN201025622Y (en) | 2007-01-25 | 2007-01-25 | A nickel base armoured thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200340282U CN201025622Y (en) | 2007-01-25 | 2007-01-25 | A nickel base armoured thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201025622Y true CN201025622Y (en) | 2008-02-20 |
Family
ID=39099479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200340282U Expired - Fee Related CN201025622Y (en) | 2007-01-25 | 2007-01-25 | A nickel base armoured thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201025622Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614598B (en) * | 2008-06-27 | 2011-05-04 | 新奥科技发展有限公司 | Thermocouple device used for measuring underground gasification temperature |
| CN102937486A (en) * | 2012-12-04 | 2013-02-20 | 中国航空工业集团公司北京长城计量测试技术研究所 | Toughening-type high-temperature iridium rhodium thermocouple |
| CN111799013A (en) * | 2020-07-27 | 2020-10-20 | 昆山安胜达微波科技有限公司 | Flexible high-precision N-type thermocouple sensor cable |
| CN111863320A (en) * | 2020-07-27 | 2020-10-30 | 昆山安胜达微波科技有限公司 | Flexible high-precision K-type thermocouple sensor cable |
-
2007
- 2007-01-25 CN CNU2007200340282U patent/CN201025622Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614598B (en) * | 2008-06-27 | 2011-05-04 | 新奥科技发展有限公司 | Thermocouple device used for measuring underground gasification temperature |
| CN102937486A (en) * | 2012-12-04 | 2013-02-20 | 中国航空工业集团公司北京长城计量测试技术研究所 | Toughening-type high-temperature iridium rhodium thermocouple |
| CN111799013A (en) * | 2020-07-27 | 2020-10-20 | 昆山安胜达微波科技有限公司 | Flexible high-precision N-type thermocouple sensor cable |
| CN111863320A (en) * | 2020-07-27 | 2020-10-30 | 昆山安胜达微波科技有限公司 | Flexible high-precision K-type thermocouple sensor cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20100225 |