CN201637498U - Composite tube type high temperature thermocouple - Google Patents
Composite tube type high temperature thermocouple Download PDFInfo
- Publication number
- CN201637498U CN201637498U CN2010201663659U CN201020166365U CN201637498U CN 201637498 U CN201637498 U CN 201637498U CN 2010201663659 U CN2010201663659 U CN 2010201663659U CN 201020166365 U CN201020166365 U CN 201020166365U CN 201637498 U CN201637498 U CN 201637498U
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- tube
- thermocouple
- hole ceramic
- ceramic pipe
- fairlead
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Abstract
The utility model provides a composite tube type high temperature thermocouple. A double-hole ceramic tube and a single-hole ceramic tube are placed in sequence in a protection tube. A metal sensor protection cover is sleeved outside the protection tube. The protection tube and the sensor protection cover which are sealed by a graphite gasket are compressed by a fastening screw. An outer end cap is fixed on the end cap of the sensor protection cover. A wire leading tube is fixed at the end of the outer end cap through the set screw of the wire leading tube. Two thermocouple wires are placed in two tube cavities of the double-hole ceramic tube respectively. The ends of the two thermocouple wires extend to the single-hole ceramic tube. Both ends of the two thermocouple wires in the single-hole ceramic tube are in compression connection with one ends of the two compensation leads through two cross coils. The other ends of the two compensation leads penetrate through the single-hole ceramic tube to the wire leading tube. Heat resisting ceramic powder is filled compactly in the tube cavities of the protection tube, the double-hole ceramic tube and the single-hole ceramic tube. The utility model can be applied to high temperature measurement, of gasification furnace and the like in a long term and superhigh temperature measurement of special occasions.
Description
Technical field
The utility model relates to a kind ofly can carry out pyrometric sensor at the environment that oxidation, reducing gas alternately occur, particularly a kind of pyrometer couple with protection encapsulating structure continuously.
Background technology
Along with the development of modern industrial technology, the measuring technique of temperature is more and more important under the high-temperature and high-pressure conditions, and temperature survey is exactly an exemplary in the coal gasifier burner hearth.The temperature of closing for high temperature high-voltage fields such as gasification furnace burner hearths is accurately measured and strict control is the key factor of guaranteeing gasification furnace safety, economical operation.Because operating condition is very harsh in the gasification furnace, this has had higher technical requirement to corresponding temperature probe, sensor must possess the high temperature that bears for a long time about 1800 ℃ and the ability of 1～5MPa high pressure, washing away of oxidation, reducing atmosphere alternating corrosion and material can also be born for a long time, and the hot pressing impact that temperature and pressure drastic change brings can be born.
Summary of the invention
It is simple and convenient that the purpose of this utility model provides a kind of realization, high temperature measurement under the suitable long-time condition of high voltage, can bear oxidation-reduction and replace atmosphere corrosion and slag erosion, and can resistance the stop in emergency temperature, pressure that brings of system sharply change the composite tube type high-temperature thermocouple of impact.
Realize the technical scheme of the utility model purpose: a kind of composite tube type high-temperature thermocouple, it comprises a protection tube, is placed with diplopore ceramic pipe and single hole ceramic pipe in the protection tube successively; Be with the metal sensor protective sleeve outside protection tube, protection tube and sensor protection cover compress by holding screw by graphite gasket sealing back; The plug of sensor protection cover is fixed with the overcoat plug; Fairlead is fixed on overcoat plug end by the fairlead fixed screw; Article two, thermocouple wire is placed on respectively in two tube chambers of diplopore ceramic pipe, and two thermocouple wire ends extend in the single hole ceramic pipe; Two thermocouple wire ends compress by two threading circles with two compensating wire one ends respectively and are connected in the single hole ceramic pipe; Article two, the compensating wire other end passes the single hole ceramic pipe and extends in the fairlead; In the tube chamber of protection tube, diplopore ceramic pipe and single hole ceramic pipe, all closely be filled with the heat-stable ceramic powder.
Aforesaid a kind of composite tube type high-temperature thermocouple, its overcoat plug and fairlead junction are provided with the fairlead packing ring; The sensor protection cover is provided with upper gasket with overcoat plug junction.
Aforesaid a kind of composite tube type high-temperature thermocouple, its described thermocouple wire are Wolfram rhenium heat electric couple silk, platinum rhodium thermocouple silk, platinum rhodium-platinum thermocouple silk or platinum Pt Rh rhodium thermocouple silk.
Aforesaid a kind of composite tube type high-temperature thermocouple, its described fairlead is a corrugated stainless steel tubing.
Aforesaid a kind of composite tube type high-temperature thermocouple, its described heat-stable ceramic powder is magnesia chrome spinel powder or aluminium oxide powder.
Effect of the present utility model is: composite tube type high-temperature thermocouple described in the utility model, possess the high temperature that bears for a long time about 1800 ℃ and the ability of 1～5MPa high pressure, washing away of oxidation, reducing atmosphere alternating corrosion and material can also be born for a long time, and the hot pressing impact that temperature and pressure drastic change brings can be born.But the utility model prolonged application is in the field of high temperature measurements such as gasification furnace, and the superhigh temperature that can be applicable to some special occasions is measured.
Description of drawings
Fig. 1 is a composite tube type high-temperature thermocouple structural representation described in the utility model;
Among the figure: 1. protection tube; 2. diplopore ceramic pipe; 3. thermocouple wire; 4. sensor protection cover; 5. single hole ceramic pipe; 6. graphite gasket; 7. holding screw; 8. heat-stable ceramic powder; 9. compensating wire; 10. threading circle; 11. overcoat plug; 12. fairlead packing ring; 13. upper gasket; 14. fairlead fixed screw; 15. fairlead.
Embodiment
Below in conjunction with the drawings and specific embodiments composite tube type high-temperature thermocouple described in the utility model is further described.
As shown in Figure 1, two Wolfram rhenium heat electric couple silks 3 of composite tube type high-temperature thermocouple are placed on respectively in two tube chambers of diplopore ceramic pipe 2, and diplopore ceramic pipe 2 is placed in the protection tube 1.Article two, a termination portion of Wolfram rhenium heat electric couple silk 3 joins mutually, and the other end of two Wolfram rhenium heat electric couple silks 3 extends in the single hole ceramic pipe 5.Single hole ceramic pipe 5 is arranged on that diplopore ceramic pipe 2 one ends are outer, in the protection tube 1.Compress by threading circle 10 with two compensating wires 9 respectively in single hole ceramic pipe 5 interior two thermocouple wire 3 ends and to be connected.Article two, compensating wire 9 passes single hole ceramic pipe 5 and extends in the fairlead 15.
Be with stainless steel metal sensor protection cover 4 outside protection tube 1, protection tube 1 is MoSi
2Insulating material.Protection tube 1 and sensor protection cover 4 compress by holding screw 7 by graphite gasket 6 sealing backs.The plug of sensor protection cover 4 also is provided with the upper gasket 13 that seal at sensor protection cover 4 with overcoat plug 11 junctions by 11 shutoff of overcoat plug.Above-mentioned protection tube and sensor protection be sheathed to be counted whole pyrometer couple and puts and provide intensity to guarantee, and has solved the sealing problem of pyrometer couple fixed in place and inner structure, and the physical life of pyrometer couple is improved.
Fairlead 15 is fixed on overcoat plug 11 ends by fairlead fixed screw 14, and overcoat plug 11 and fairlead 15 junctions are provided with the fairlead packing ring 12 that seals.Fairlead 15 is a corrugated stainless steel tubing.Adopt corrugated stainless steel tubing to draw signal wire, make the temperature signal transmission more reliable and more stable, reduced requirement transmission circuit.Behind the fairlead 15 temperature transmitter is set, temperature transmitter is connected with the DCS dispatch control system.
All closely be filled with heat-stable ceramic powder 8 in the tube chamber of protection tube 1, diplopore ceramic pipe 2 and hole ceramic pipe 5, the heat-stable ceramic powder adopts magnesia chrome spinel powder or aluminium oxide powder.Both guarantee the response speed of pyrometer couple by filling the heat-stable ceramic powder, improved physical strength, the thermal conductivity of thermopair again, played the seal protection effect simultaneously.
Pyrometer couple described in the utility model is made to be processed into as required the shape that is fit to the on-the-spot test requirement and is fixed, it possesses the high temperature that bears for a long time about 1800 ℃ and the ability of 1～5MPa high pressure, washing away of oxidation, reducing atmosphere alternating corrosion and material can also be born for a long time, and the hot pressing impact that temperature and pressure drastic change brings can be born.
Claims (5)
1. composite tube type high-temperature thermocouple is characterized in that:
It comprises a protection tube (1), is placed with diplopore ceramic pipe (2) and single hole ceramic pipe (5) in the protection tube (1) successively; Be with metal sensor protective sleeve (4) outside protection tube (1), protection tube (1) and sensor protection cover (4) compress by holding screw (7) by graphite gasket (6) sealing back; The plug of sensor protection cover (4) is fixed with overcoat plug (11); Fairlead (15) is fixed on overcoat plug (11) end by fairlead fixed screw (14);
Article two, thermocouple wire (3) is placed on respectively in two tube chambers of diplopore ceramic pipe (2), and two thermocouple wires (3) end extends in the single hole ceramic pipe (5); Compress by two threading circles (10) with two compensating wires (9) one ends respectively in interior two thermocouple wires of single hole ceramic pipe (5) (3) end and to be connected; Article two, compensating wire (9) other end passes single hole ceramic pipe (5) and extends in the fairlead (15); In the tube chamber of protection tube (1), diplopore ceramic pipe (2) and single hole ceramic pipe (5), all closely be filled with heat-stable ceramic powder (8).
2. a kind of composite tube type high-temperature thermocouple according to claim 1 is characterized in that: overcoat plug (11) and fairlead (15) junction are provided with fairlead packing ring (12); Sensor protection cover (4) is provided with upper gasket (13) with overcoat plug (11) junction.
3. a kind of composite tube type high-temperature thermocouple according to claim 1 is characterized in that: described thermocouple wire (3) is Wolfram rhenium heat electric couple silk, platinum rhodium thermocouple silk, platinum rhodium-platinum thermocouple silk or platinum Pt Rh rhodium thermocouple silk.
4. a kind of composite tube type high-temperature thermocouple according to claim 1 is characterized in that: described fairlead (15) is a corrugated stainless steel tubing.
5. a kind of composite tube type high-temperature thermocouple according to claim 1 is characterized in that: described heat-stable ceramic powder (8) is magnesia chrome spinel powder or aluminium oxide powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201663659U CN201637498U (en) | 2010-04-22 | 2010-04-22 | Composite tube type high temperature thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201663659U CN201637498U (en) | 2010-04-22 | 2010-04-22 | Composite tube type high temperature thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637498U true CN201637498U (en) | 2010-11-17 |
Family
ID=43082000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201663659U Expired - Lifetime CN201637498U (en) | 2010-04-22 | 2010-04-22 | Composite tube type high temperature thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201637498U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839774A (en) * | 2010-04-22 | 2010-09-22 | 北京航天计量测试技术研究所 | Composite tube type high-temperature thermocouple |
| CN103743495A (en) * | 2013-01-30 | 2014-04-23 | 上海洁晟环保科技有限公司 | Thermal sensitive ceramic temperature sensing device and temperature measuring control equipment |
| CN104155014A (en) * | 2014-08-20 | 2014-11-19 | 浙江泰索科技有限公司 | Temperature sensor |
| CN104236738A (en) * | 2014-09-29 | 2014-12-24 | 江苏大学 | System and method for measuring temperature in formwork in process of directional solidification in real time |
-
2010
- 2010-04-22 CN CN2010201663659U patent/CN201637498U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839774A (en) * | 2010-04-22 | 2010-09-22 | 北京航天计量测试技术研究所 | Composite tube type high-temperature thermocouple |
| CN101839774B (en) * | 2010-04-22 | 2011-11-09 | 北京航天计量测试技术研究所 | Composite tube type high-temperature thermocouple |
| CN103743495A (en) * | 2013-01-30 | 2014-04-23 | 上海洁晟环保科技有限公司 | Thermal sensitive ceramic temperature sensing device and temperature measuring control equipment |
| CN104155014A (en) * | 2014-08-20 | 2014-11-19 | 浙江泰索科技有限公司 | Temperature sensor |
| CN104236738A (en) * | 2014-09-29 | 2014-12-24 | 江苏大学 | System and method for measuring temperature in formwork in process of directional solidification in real time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101117 Effective date of abandoning: 20111109 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20101117 Effective date of abandoning: 20111109 |