CN102928108A - Novel pyrometer couple - Google Patents
Novel pyrometer couple Download PDFInfo
- Publication number
- CN102928108A CN102928108A CN2012104795668A CN201210479566A CN102928108A CN 102928108 A CN102928108 A CN 102928108A CN 2012104795668 A CN2012104795668 A CN 2012104795668A CN 201210479566 A CN201210479566 A CN 201210479566A CN 102928108 A CN102928108 A CN 102928108A
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- CN
- China
- Prior art keywords
- thermopair
- ceramic fiber
- layer
- fiber fabric
- high temperature
- Prior art date
- 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.)
- Pending
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- 239000000919 ceramic Substances 0.000 claims abstract description 43
- 239000004744 fabric Substances 0.000 claims abstract description 43
- 239000000835 fiber Substances 0.000 claims abstract description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 17
- 229910052681 coesite Inorganic materials 0.000 claims description 9
- 229910052906 cristobalite Inorganic materials 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 229910052682 stishovite Inorganic materials 0.000 claims description 9
- 229910052905 tridymite Inorganic materials 0.000 claims description 9
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 239000011701 zinc Substances 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910003465 moissanite Inorganic materials 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a novel pyrometer couple, which includes a thermocouple body and is characterized in that a high-temperature resistant ceramic fiber fabric layer is arranged outside the thermocouple body. The novel pyrometer couple has a simple structure, is low in cost, can be formed through directly adding the high-temperature resistant ceramic fiber fabric layer on the outer layer of the thermocouple, solves the problem of metal corrosion that a metal thermocouple cannot resist molten aluminum, molten zinc and other metals, has strong corrosion resistance, and solves the problems of poor thermal shock resistance and frangibility of a ceramic pipe for protecting the thermocouple, thereby greatly prolonging the service life of the thermocouple.
Description
Technical field
The present invention relates to a kind of thermopair, especially a kind of new type high temperature thermopair.
Background technology
Thermopair (thermocouple) is temperature element commonly used in the temperature measuring instrument, and it directly measures temperature, and temperature signal is converted to the thermopower signal, converts the temperature of measured medium to by electric meter (secondary instrument).The profile of various thermopairs is often far from it because of needs, but their basic structure is roughly the same, usually is comprised of major parts such as thermode, insulation sleeve protection tube and terminal boxes, and common and Displaying Meter, recorder and electronic controller support the use.In Steel Wire Products Industry, owing to will measure the temperature of the deposite metal liquid of high temperature, the structure that is used at present the thermopair of mensuration molten metal temperature generally is originally external at thermopair, put Al2O3, mullite, SiC or Si3N4 ceramic pipe, although this kind material performance aspect thermotolerance is fine, in use, because rapid heat cycle causes bursting or cracking, thereby make molten metal be immersed in ceramic pipe inside, damage the thermopair body.Also have at present a kind of technical scheme to be exactly that this externally directly puts the stainless steel sleeve pipe at thermopair, although the anti-rapid heat cycle of stainless-steel tube, but the corrosion of not anti-metal liquid, serviceable life is very short.
Summary of the invention
The present invention seeks to: provide a kind of simple in structure, cheap, anti-molten metal corrodes, the new type high temperature thermopair of long service life.
Technical scheme of the present invention is: a kind of new type high temperature thermopair, comprise the thermopair body, and it is characterized in that this externally has a resistant to elevated temperatures ceramic fiber fabric layer described thermopair.
Preferably, the surface density of described ceramic fiber fabric layer is more than or equal to 600g/cm
2
Preferably, described ceramic fiber fabric layer is at least two-layer.
Preferably, described ceramic fiber fabric layer is one or more in Al2O3/SiO2 ceramic alumina fiber cloth, SiO2 ceramic fiber cloth, carbon cloth, SiC fiber cloth, the Al2O3-SiO2-B series fiber cloth.
Preferably, described ceramic fiber fabric layer is two-layer.
A kind of new type high temperature thermopair has two-layer resistant to elevated temperatures ceramic fiber fabric layer, between the described two-layer ceramic fiber fabric layer ceramic mud layer is arranged.
Preferably, the thickness of described ceramic mud layer is not more than 2mm.
Advantage of the present invention is:
1. simple in structure, cheap, directly add resistant to elevated temperatures ceramic fiber fabric layer at the thermopair skin and namely can realize;
2. solved the problem of the metal erosion such as the not anti-aluminium liquid of metallic thermocouple and zinc liquid, corrosion resistance is strong;
3. solved poor, the frangible problem of ceramic pipe protection thermopair anti-thermal shock, the serviceable life of greatly improving thermopair.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is new type high temperature thermocouple junction composition of the present invention.
Fig. 2 is new type high temperature thermopair partial enlarged drawing of the present invention.
Wherein: 1 nexine ceramic fiber fabric; 2 ceramic size coats; 3 outer ceramic fiber fabrics.
Embodiment
Embodiment 1: new type high temperature thermopair as shown in Figure 1 and Figure 2, comprise the thermopair body, this externally has a resistant to elevated temperatures nexine ceramic fiber fabric layer 1 thermopair, nexine ceramic fiber fabric layer is coated with ceramic size coat 2 outward, the thickness of this ceramic size coat 2 is 1mm, also is coated with outer ceramic fiber fabric 3 outside the ceramic size coat 2.Production method: use first one deck by the made fabric t1.2 of alumina fibre (Al2O3/SiO2=72/28), ρ=1000g/cm
2(Japanese NITIVY Co., the aluminium oxide cloth SV-6 that LTD produces) parcel K type thermopair body, fix with Φ 0.6 ceramic fiber cotton thread, subsequently with ceramic mud (Suzhou A Ersai produces 1400 cementing agents, water percentage 20%) coating surface, thickness moderate (the about 1mm of thickness), with blast heater oven dry (temperature 80 degree, dry 1hr), at outermost layer parcel aforementioned fibers fabric, slightly fix with the ceramic fiber cotton thread again.
Embodiment 2:K type thermopair body is with the made fabric t1.2 of one deck alumina fibre (Al2O3/SiO2=72/28), ρ=1000g/cm
2(Japanese NITIVY Co., the aluminium oxide cloth SV-6 that LTD produces) be parcel directly.
Embodiment 3:K type thermopair body, with one deck SiO2 ceramic fiber cloth t1.2, ρ=1100g/cm2(Suzhou A Ersai produces FTL-800) wrap up, and being added with the ceramic mud layer in the SiO2 ceramic fiber cloth, production method is with embodiment 1.
Embodiment 4:K type thermopair body, with three layers of carbon cloth (Japanese Toray Insustries, Inc. produces) t1.0, ρ=1200g/cm2 directly wraps up.
Embodiment 5:K type thermopair body, with two-layer carbon cloth Al2O3-SiO2-B series fiber cloth (Minnesota Mining and Manufacturing Company's product) t1.2, ρ=1000g/cm2 directly wraps up.
Embodiment 6: with the made fabric t1.2 of two-layer alumina fibre (Al2O3/SiO2=72/28), ρ=1000g/cm
2(Japanese NITIVY Co., the aluminium oxide cloth SV-6 that LTD produces) be parcel directly.
Insulation was extracted thermopair out after 10 minutes again after the thermopair of above-described embodiment put 750 degree aluminium liquid, placed 10 minutes, and this process is 100 times repeatedly, and the result who obtains is as follows:
Insulation was extracted thermopair out after 10 minutes again after the thermopair of above-described embodiment put into 480 degree zinc liquid, placed 10 minutes, and this process is 100 times repeatedly, and the result who obtains is as follows:
Can find out that from above-mentioned test result new type high temperature thermopair of the present invention has better anti-rapid heat cycle than existing thermopair, anti-metal liquid corrosive nature, longer service life.
The above only is the specific embodiment of the present invention.Protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Claims (7)
1. a new type high temperature thermopair comprises the thermopair body, it is characterized in that, this externally has a resistant to elevated temperatures ceramic fiber fabric layer described thermopair.
2. new type high temperature thermopair according to claim 1 is characterized in that, the surface density of described ceramic fiber fabric layer is more than or equal to 600g/cm
2
3. new type high temperature thermopair according to claim 2 is characterized in that, described ceramic fiber fabric layer is at least two-layer.
4. new type high temperature thermopair according to claim 3, it is characterized in that described ceramic fiber fabric layer is one or more in Al2O3/SiO2 ceramic alumina fiber cloth, SiO2 ceramic fiber cloth, carbon cloth, SiC fiber cloth, the Al2O3-SiO2-B series fiber cloth.
5. new type high temperature thermopair according to claim 3 is characterized in that, described ceramic fiber fabric layer is two-layer.
6. new type high temperature thermopair according to claim 5 is characterized in that, between the described two-layer ceramic fiber fabric layer ceramic mud layer is arranged.
7. new type high temperature thermopair according to claim 6 is characterized in that, the thickness of described ceramic mud layer is not more than 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104795668A CN102928108A (en) | 2012-11-22 | 2012-11-22 | Novel pyrometer couple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104795668A CN102928108A (en) | 2012-11-22 | 2012-11-22 | Novel pyrometer couple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102928108A true CN102928108A (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104795668A Pending CN102928108A (en) | 2012-11-22 | 2012-11-22 | Novel pyrometer couple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102928108A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568519A (en) * | 2016-11-07 | 2017-04-19 | 宁波精丰测控技术有限公司 | Heat-resisting ceramic-armored high-temperature thermocouple and manufacturing method thereof |
| CN108484169A (en) * | 2018-03-26 | 2018-09-04 | 甘肃新西北碳素科技有限公司 | Carbon/carbon material protective cover for thermocouple production method for aluminium melting furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4984904A (en) * | 1987-12-24 | 1991-01-15 | Kawaso Electric Industrial Co., Ltd. | Apparatus for continuously measuring temperature of molten metal and method for making same |
| US5603571A (en) * | 1993-08-18 | 1997-02-18 | Eckert; C. Edward | Thermocouple assembly including an outer sleeve made in part of a titanium alloy |
| CN1924532A (en) * | 2005-08-30 | 2007-03-07 | 宝山钢铁股份有限公司 | Thermo-couple composite protective sleeve and making method thereof |
| CN101592530A (en) * | 2009-06-30 | 2009-12-02 | 巩义市恒星金属制品有限公司 | The thermocouple protective casing of liquid zinc corrosion resistant |
| CN102156003A (en) * | 2011-02-25 | 2011-08-17 | 武汉武钢维苏威高级陶瓷有限公司 | Thermocouple assembly and manufacturing process |
-
2012
- 2012-11-22 CN CN2012104795668A patent/CN102928108A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4984904A (en) * | 1987-12-24 | 1991-01-15 | Kawaso Electric Industrial Co., Ltd. | Apparatus for continuously measuring temperature of molten metal and method for making same |
| US5603571A (en) * | 1993-08-18 | 1997-02-18 | Eckert; C. Edward | Thermocouple assembly including an outer sleeve made in part of a titanium alloy |
| CN1924532A (en) * | 2005-08-30 | 2007-03-07 | 宝山钢铁股份有限公司 | Thermo-couple composite protective sleeve and making method thereof |
| CN101592530A (en) * | 2009-06-30 | 2009-12-02 | 巩义市恒星金属制品有限公司 | The thermocouple protective casing of liquid zinc corrosion resistant |
| CN102156003A (en) * | 2011-02-25 | 2011-08-17 | 武汉武钢维苏威高级陶瓷有限公司 | Thermocouple assembly and manufacturing process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568519A (en) * | 2016-11-07 | 2017-04-19 | 宁波精丰测控技术有限公司 | Heat-resisting ceramic-armored high-temperature thermocouple and manufacturing method thereof |
| CN106568519B (en) * | 2016-11-07 | 2019-05-24 | 宁波精丰测控技术有限公司 | Heat resistant type ceramic armor pyrometer couple and its manufacturing method |
| CN108484169A (en) * | 2018-03-26 | 2018-09-04 | 甘肃新西北碳素科技有限公司 | Carbon/carbon material protective cover for thermocouple production method for aluminium melting furnace |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |