CN102998019A - Mixed gas suction type thermocouple - Google Patents
Mixed gas suction type thermocouple Download PDFInfo
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- CN102998019A CN102998019A CN201210495137XA CN201210495137A CN102998019A CN 102998019 A CN102998019 A CN 102998019A CN 201210495137X A CN201210495137X A CN 201210495137XA CN 201210495137 A CN201210495137 A CN 201210495137A CN 102998019 A CN102998019 A CN 102998019A
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- gas
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- inner sleeve
- suction type
- outer tube
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Abstract
The invention discloses a mixed gas suction type thermocouple which comprises a terminal box, a flange, an outer sleeve, an inner sleeve arranged in the outer sleeve and a thermocouple wire arranged in the inner sleeve. A gap is reserved between the inner sleeve and the outer sleeve, a gas blowing device injects first gas into the gap, the first gas and second gas in the gap are mixed to form third gas, and a vacuum adsorption device sucks the third gas in the gap away through a pipeline. When the mixed gas suction type thermocouple is used in the environment having high temperature and containing corrosive gas or poisonous gas, the service life is prolonged, and the safety performance is improved.
Description
Technical field
The present invention relates to a kind of mixing air suction type thermopair.
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
Problem for prior art exists the object of the invention is to propose a kind of mixing air suction type thermopair, and 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 mixing air suction type thermopair, 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 outer tube, gas blasts equipment and injects the first gas to the gap, the second gas in the first gas and the gap is mixed into the 3rd gas, and vacuum absorption device siphons away the 3rd gas in the gap by pipeline.
Outer tube and inner sleeve adopt corundum to make.The first gas is inert gas.
Gas blasts the first retaining valve that allows the first gas flow gap is set between equipment and the gap.
The second retaining valve that allows the 3rd gas flow vacuum absorption device is set between gap and the vacuum absorption device.
Based on disclosing of above technical scheme, the present invention possesses following beneficial effect:
The present invention can prevent that outer sleeve inner wall, inner sleeve inner and outer wall and thermocouple wire from suffering the corrosion of corrosive gas, can also further prevent the corrosive gas leakage, thereby promotes its serviceable life and use safety coefficient.
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:
A kind of mixing air suction type thermopair 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 7 between inner sleeve 5 and the outer tube 3, gas blasts equipment 8 and 7 injects the first gas to the gap, the second gas in the first gas and the gap 7 is mixed into the 3rd gas, and vacuum absorption device 4 siphons away the 3rd gas in the gap 7 by pipeline.Outer tube 3 and inner sleeve 5 adopt corundum to make.The first gas is inert gas.Gas blasts the first retaining valve that allows the first gas flow gap 7 is set between equipment 8 and the gap 7.The second retaining valve that allows the 3rd gas flow vacuum absorption device 4 is set between gap 7 and the vacuum absorption device 4.
Among the present invention, leave gap 7 between inner sleeve 5 and the outer tube 3, by offering passage at outer tube 3, and connect the air entry of vacuum absorption device 4 by connecting pipe, by offering passage at outer tube 3, and connect the air-blowing mouth that gas blasts equipment 8 by connecting pipe.In the actual mechanical process, under the high temperature, outer tube 3 tube walls swell, and produce small pore, and corrosive gas penetrates into gap 7 interior formation the second gases between outer tube 3 and the inner sleeve 5.
At first, gas blasts equipment 8 work, in gap 7, blast the first gas, the first gas is preferably inert gas, the first gas mixes formation the 3rd gas with the second gas, simultaneously, gap 7 interior gas concentrations increase, then, vacuum absorption device 4 work, siphon away the 3rd gas, owing to comprise corrosive gas in the 3rd gas, the 3rd gas is siphoned away, namely can remove the corrosive gas in the gap 7, because gap 7 interior gas concentrations are higher, not only can dilute corrosive gas wherein, also help the heat conduction.
Can prevent corrosive gas corrosion outer tube 3 inwalls and inner sleeve 5 outer walls 5; can prevent that also corrosive gas is by penetrating in the inner sleeve 5; thereby inwall and thermocouple wire 6 to inner sleeve 5 cause corrosion; further prevent corrosive gas by inner sleeve 5 to outward leakage, thereby protection of the environment and eliminate the threat that public security is caused.
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 (5)
1. one kind is mixed the air suction type thermopair, comprise terminal box (1), flange (2), outer tube (3), be built in the inner sleeve (5) of described outer tube (3), be built in the thermocouple wire (6) of described inner sleeve (5), it is characterized in that, leaving gap (7) between described inner sleeve (5) and the described outer tube (3), gas blasts equipment (8) and injects the first gas to described gap (7), the second gas in described the first gas and described gap (7) is mixed into the 3rd gas, and vacuum absorption device (4) siphons away interior described the 3rd gas in described gap (7) by pipeline.
2. mixing air suction type thermopair according to claim 1 is characterized in that, described outer tube (3) and described inner sleeve (5) adopt corundum to make.
3. mixing air suction type thermopair according to claim 1 is characterized in that, described the first gas is inert gas.
4. mixing air suction type thermopair according to claim 1 is characterized in that, described gas blasts the first retaining valve that allows the described gap of described the first gas flow (7) is set between equipment (8) and described gap (7).
5. mixing air suction type thermopair according to claim 1 is characterized in that, the second retaining valve that allows the described vacuum absorption device of described the 3rd gas flow (4) is set between described gap (7) and the described vacuum absorption device (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495137XA CN102998019A (en) | 2012-11-28 | 2012-11-28 | Mixed gas suction type thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495137XA CN102998019A (en) | 2012-11-28 | 2012-11-28 | Mixed gas suction type thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102998019A true CN102998019A (en) | 2013-03-27 |
Family
ID=47926877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210495137XA Pending CN102998019A (en) | 2012-11-28 | 2012-11-28 | Mixed gas suction type thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102998019A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198069A (en) * | 2014-08-26 | 2014-12-10 | 安徽蓝德仪表有限公司 | Thermocouple for air compressor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07280659A (en) * | 1994-04-04 | 1995-10-27 | Hitachi Zosen Corp | High temperature corrosion resistant thermometer |
| JPH11201831A (en) * | 1998-01-12 | 1999-07-30 | Isuzu Ceramics Res Inst Co Ltd | Metal fusion temperature measuring thermocouple |
| CN2441128Y (en) * | 2000-10-10 | 2001-08-01 | 吴加伦 | Blowed sheathed thermal couple |
| CN2786581Y (en) * | 2005-04-05 | 2006-06-07 | 谭铁桥 | Thermocouple with outside arranged gas resource protector |
| CN101750165A (en) * | 2010-01-08 | 2010-06-23 | 浙江伦特机电有限公司 | Blowing thermocouple |
| CN101806635A (en) * | 2009-02-13 | 2010-08-18 | 天津市中环温度仪表有限公司 | Air-blown (multi-point) armored thermocouple (thermal resistor) |
| CN201653573U (en) * | 2010-04-07 | 2010-11-24 | 安徽省众和电仪科技有限公司 | Special high-temperature thermocouple for sulfur recovery tail gas furnace |
-
2012
- 2012-11-28 CN CN201210495137XA patent/CN102998019A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07280659A (en) * | 1994-04-04 | 1995-10-27 | Hitachi Zosen Corp | High temperature corrosion resistant thermometer |
| JPH11201831A (en) * | 1998-01-12 | 1999-07-30 | Isuzu Ceramics Res Inst Co Ltd | Metal fusion temperature measuring thermocouple |
| CN2441128Y (en) * | 2000-10-10 | 2001-08-01 | 吴加伦 | Blowed sheathed thermal couple |
| CN2786581Y (en) * | 2005-04-05 | 2006-06-07 | 谭铁桥 | Thermocouple with outside arranged gas resource protector |
| CN101806635A (en) * | 2009-02-13 | 2010-08-18 | 天津市中环温度仪表有限公司 | Air-blown (multi-point) armored thermocouple (thermal resistor) |
| CN101750165A (en) * | 2010-01-08 | 2010-06-23 | 浙江伦特机电有限公司 | Blowing thermocouple |
| CN201653573U (en) * | 2010-04-07 | 2010-11-24 | 安徽省众和电仪科技有限公司 | Special high-temperature thermocouple for sulfur recovery tail gas furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198069A (en) * | 2014-08-26 | 2014-12-10 | 安徽蓝德仪表有限公司 | Thermocouple for air compressor |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |