CN102998020A - Thermocouple with thermocouple wire protection adsorption - Google Patents
Thermocouple with thermocouple wire protection adsorption Download PDFInfo
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- CN102998020A CN102998020A CN2012104954359A CN201210495435A CN102998020A CN 102998020 A CN102998020 A CN 102998020A CN 2012104954359 A CN2012104954359 A CN 2012104954359A CN 201210495435 A CN201210495435 A CN 201210495435A CN 102998020 A CN102998020 A CN 102998020A
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- thermocouple
- thermocouple wire
- inner sleeve
- thermopair
- wire protection
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Abstract
The invention discloses a thermocouple with thermocouple wire protection adsorption. The thermocouple comprises wiring case, a flange, an outer sleeve tube, an inner sleeve tube embedded in the outer sleeve tube and a thermocouple wire embedded in the inner sleeve tube, wherein a gap exists between the thermocouple wire and the inner sleeve tube, and a gas absorption material is filled in the gap. The service life is long and the safe performance is improved when the thermocouple is used under the environment containing corrosive gas and toxic gas and the high temperature environment.
Description
Technical field
The present invention relates to a kind of thermopair with thermocouple wire protection absorption.
Background technology
Some fire box temperatures reach 1100 ℃～1300 ℃, and have some media such as the corrosive gas such as sulfuretted hydrogen, sulphuric dioxide generations in burner hearth.Following situation may occur in traditional thermopair in use.
1, thermopair internal and external casing tube wall swells under the high temperature, produces small pore, and corrosive gas is penetrated into thermopair inner sleeve internal contamination corrosion thermocouple wire, and the temperature that thermopair is measured is drifted about, and shorten serviceable life, finally causes the thermocouple wire fracture.
2, the existence of corrosive gas under the high temperature uses the internal and external casing of common metal material to be corroded very soon, and the existing corundum that use as the material of internal and external casing more, and the internal and external casing that uses corundum to make is high temperature resistant, corrosion-resistant.But, cold alternately and in the corrosive gas situation about existing in heat, or casing collapse can occur, cause hazardous medium to be revealed, sulfuretted hydrogen, sulphuric dioxide etc. all are hypertoxic gas, its leakage even can cause security incident, the internal and external casing fracture may make inner sleeve directly fall in the burner hearth, can affect its normal operation.
Based on above problem, existing thermopair is demanded urgently improving.
Summary of the invention
For the problem that prior art exists, the object of the invention is to propose a kind of thermopair with thermocouple wire protection absorption, in the condition of high temperature, comprising when using in the environment of corrosive gas, toxic gas, increase serviceable life, and security performance improves.
For reaching this purpose, the present invention by the following technical solutions:
A kind of thermopair with thermocouple wire protection absorption, comprise terminal box, flange, outer tube, be built in outer tube inner sleeve, be built in the thermocouple wire of inner sleeve, leaving gap between inner sleeve and the thermocouple wire, blanketing gas sorbing material in the gap.
Gas adsorption material adopts activated alumina.Activated alumina is powder.
Outer tube and inner sleeve adopt corundum to make.
Based on disclosing of above technical scheme, the present invention possesses following beneficial effect:
Among the present invention, leaving gap between thermocouple wire and inner sleeve, in the gap, fill the activated alumina of powdery, large and comprise in the environment of corrosive gas in temperature variation, the outer tube that adopts corundum to make uses for a long time, the crack occurs easily, corrosive gas enters the gap by the crack, because the existence of pulverous activated alumina, can adsorb the gas that enters the gap, naturally also comprise corrosive gas, thereby guarantee that thermocouple wire can not corroded, more can not reveal, prevent from causing security incident, thereby proposition of the present invention improves serviceable life and the security performance of thermopair greatly.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the embodiment of the invention 1.
Embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment:
Embodiment 1
A kind of thermopair with thermocouple wire protection absorption is proposed, comprise terminal box 1, flange 2, outer tube 3, be built in outer tube 3 inner sleeve 5, be built in the thermocouple wire 6 of inner sleeve 5, leaving gap 4 between inner sleeve 5 and the thermocouple wire 6, gap 4 interior blanketing gas sorbing materials.Gas adsorption material adopts activated alumina.Activated alumina is powder.Outer tube 3 and inner sleeve 5 adopt corundum to make.
Among the present invention, leaving gap 4 between thermocouple wire 6 and inner sleeve 5, the activated alumina of 4 interior filling powderies in the gap, large and comprise in the environment of corrosive gas in temperature variation, the outer tube 3 that adopts corundum to make uses for a long time, the crack occurs easily, corrosive gas enters gap 4 by the crack, because the existence of pulverous activated alumina, can adsorb the gas that enters gap 4, naturally also comprise corrosive gas, thereby guarantee that thermocouple wire 6 can not corroded, more can not reveal, prevent from causing security incident, thereby proposition of the present invention improves serviceable life and the security performance of thermopair greatly.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (4)
1. thermopair with thermocouple wire protection absorption, comprise terminal box (1), flange (2), outer tube (3), be built in described outer tube (3) inner sleeve (5), be built in the thermocouple wire (6) of described inner sleeve (5), it is characterized in that, leaving gap (4) between described inner sleeve (5) and the described thermocouple wire (6), described gap (4) interior blanketing gas sorbing material.
2. the thermopair with thermocouple wire protection absorption according to claim 1 is characterized in that described gas adsorption material adopts activated alumina.
3. the thermopair with thermocouple wire protection absorption according to claim 2 is characterized in that described activated alumina is powder.
4. the thermopair with thermocouple wire protection absorption according to claim 1 is characterized in that, described outer tube (3) and described inner sleeve (5) adopt corundum to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104954359A CN102998020A (en) | 2012-11-28 | 2012-11-28 | Thermocouple with thermocouple wire protection adsorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104954359A CN102998020A (en) | 2012-11-28 | 2012-11-28 | Thermocouple with thermocouple wire protection adsorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102998020A true CN102998020A (en) | 2013-03-27 |
Family
ID=47926878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104954359A Pending CN102998020A (en) | 2012-11-28 | 2012-11-28 | Thermocouple with thermocouple wire protection adsorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102998020A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916529A (en) * | 2019-02-26 | 2019-06-21 | 重庆材料研究院有限公司 | Platinum resistive element and preparation process for nuclear leve proof armored platinum resistor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85204630U (en) * | 1985-11-05 | 1986-08-27 | 庞凤荣 | Oxidation-resistant w-re thermocouple |
| JPH07280659A (en) * | 1994-04-04 | 1995-10-27 | Hitachi Zosen Corp | High temperature corrosion resistant thermometer |
| CN101034016A (en) * | 2007-04-04 | 2007-09-12 | 沈阳东大传感技术有限公司 | Special type WRe temperature sensor |
| CN202547793U (en) * | 2012-04-11 | 2012-11-21 | 浙江神威电气有限公司 | Thermoelectric couple protection sleeve |
-
2012
- 2012-11-28 CN CN2012104954359A patent/CN102998020A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85204630U (en) * | 1985-11-05 | 1986-08-27 | 庞凤荣 | Oxidation-resistant w-re thermocouple |
| JPH07280659A (en) * | 1994-04-04 | 1995-10-27 | Hitachi Zosen Corp | High temperature corrosion resistant thermometer |
| CN101034016A (en) * | 2007-04-04 | 2007-09-12 | 沈阳东大传感技术有限公司 | Special type WRe temperature sensor |
| CN202547793U (en) * | 2012-04-11 | 2012-11-21 | 浙江神威电气有限公司 | Thermoelectric couple protection sleeve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916529A (en) * | 2019-02-26 | 2019-06-21 | 重庆材料研究院有限公司 | Platinum resistive element and preparation process for nuclear leve proof armored platinum resistor |
| CN109916529B (en) * | 2019-02-26 | 2021-08-31 | 重庆材料研究院有限公司 | Platinum resistor element for nuclear-grade armored platinum resistor and preparation process |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |