CN100343638C - Assembled ceramic electric thermo-couple - Google Patents
Assembled ceramic electric thermo-couple Download PDFInfo
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- CN100343638C CN100343638C CNB2005100096787A CN200510009678A CN100343638C CN 100343638 C CN100343638 C CN 100343638C CN B2005100096787 A CNB2005100096787 A CN B2005100096787A CN 200510009678 A CN200510009678 A CN 200510009678A CN 100343638 C CN100343638 C CN 100343638C
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- electrode
- rod
- shaped electrode
- hollow edged
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Abstract
The present invention relates to an assembled ceramic electric thermo-couple which can be used in a high temperature environment. The present invention comprises a tubular electrode 2, a high temperature insulation layer 3 and a rod-shaped electrode 4, wherein the lower end of the rod-shaped electrode 4 is inserted into and is connected with the tubular electrode 2 with one closed end, the insulation layer 3 is arranged between a lateral surface of the electrode 4 and the inside wall of the electrode 2, and the upper end of the electrode 2 is provided with an elastic sealing layer 5. The present invention can also be composed of a No. 1 rod-shaped electrode 4-1, the high temperature insulation layer 3 and a No. 2 rod-shaped electrode 4-2, wherein one electrode is made of MoSi2, and the other electrode is made of SiC. The outside of the side walls of the No. 1 rod-shaped electrode 4-1 and the No. 2 rod-shaped electrode 4-2 are covered with the insulating layer 3, and the electrode 1 and the electrode 4 are mutually parallel and have a spacing. The present invention has the advantages of wide application range, high measuring temperature, easy processing, same service life with noble metal thermocouples and low manufacturing cost, and the present invention can measure temperature in high temperature conductive measurement environments.
Description
Technical field:
The present invention relates to a kind of novel ceramic electric thermo-couple, especially a kind of assembled ceramic electric thermo-couple that can be used for hot environment.
Background technology:
The pottery that existing ceramic electric thermo-couple is used has silit, titania, boron carbide and carbon.Because the oxidation of carbon, in well-oxygenated environment, the thermopair that contains carbon can only be applied in the environment below 500 ℃, in like manner, because the oxidation of titania, the thermopair that contains titania can only be used 900 ℃ in well-oxygenated environment, the thermopair that contains boron carbide limits the maximum temperature of using in well-oxygenated environment be 800 ℃.And under these hot environments, carbon, titania or boron carbide must use inert gas protection, as nitrogen.Even if for testing the noble-metal thermocouple (as R type or S type thermopair) that 1700 ℃ of high temperature design, because the volatilization of electrode junction platinum also can be used several weeks in well-oxygenated environment, serviceable life is very short specially.And also there is connection stability problem between two kinds of potteries in existing ceramic electric thermo-couple.This connection is realized by mechanical installation method or mull technique that normally because the expansion coefficient of different potteries are inconsistent, along with the prolongation of service time, these tie points will be destroyed gradually, causes this thermopair can not operate as normal.The patent application publication number of Britain is that GB2288908A " ceramic electric thermo-couple " discloses a kind of ceramic electric thermo-couple, this ceramic electric thermo-couple can be under the condition of high temperature and corrosion thermometric, but can cause loose contact between two electrodes in hot environment use for a long time.
Summary of the invention:
Can't be for a long time carrying out work under the hot environment and can cause the problem of loose contact between two electrodes in hot environment use for a long time in order to solve existing ceramic electric thermo-couple, the invention provides a kind of can be at the assembled ceramic electric thermo-couple of operate as normal under the hot environment, it comprises hollow edged electrode 2, high-temperature insulating layer 3 and rod-shaped electrode 4, it also comprises regulating spring 6, regulates sleeve pipe 7, washer 7-1 and gland 8, and one of them electrode is by MoSi
2Make, another electrode is made by SiC, the lower surface sealing of hollow edged electrode 2, the inside of hollow edged electrode 2 is inserted in the lower end of rod-shaped electrode 4, join between the inner bottom surface of the lower surface of rod-shaped electrode 4 and hollow edged electrode 2, be provided with high-temperature insulating layer 3 between the inwall of the side of rod-shaped electrode 4 and hollow edged electrode 2, the openend of hollow edged electrode 2 is provided with elastic sealing layer 5, regulating the lower end of sleeve pipe 7 and the upper end of hollow edged electrode 2 screws, the upper end of regulating pipe box 7 is provided with the round-meshed catch 7-1 in center, regulating spring 6 is set in the outside on rod-shaped electrode 4 tops, screwing between the circular hole at catch 7-1 center and the bottom of regulating spring 6, fixedlys connected with gland 8 in the upper end of regulating spring 6.The present invention is because two electrodes adopt MoSi respectively
2Make with the SiC material, make the present invention can continue to carry out temperature survey under 1800 ℃ high-temperature oxidation environment, that the present invention has is applied widely, measure the temperature height, processing is simple, serviceable life and noble-metal thermocouple is suitable, cost of manufacture is low advantage.The present invention makes the present invention can keep excellent contact between two electrodes in hot environment owing to adopted regulating spring 6, adjusting sleeve pipe 7, washer 7-1 and gland 8.
The present invention also comprises rod-shaped electrode 4-1, high-temperature insulating layer 3 and No. two rod-shaped electrode 4-2 No. one, the sidewall outside of a rod-shaped electrode 4-1 and No. two rod-shaped electrode 4-2 is covered with high-temperature insulating layer 3, parallel to each other and leave setting at interval between rod-shaped electrode 4-1 and No. two rod-shaped electrode 4-2, one of them electrode is by MoSi
2Make, another electrode is made by SiC.The present invention is owing to make two electrodes shaft-like, the sidewall outside at two electrodes is covered with one deck high-temperature insulating layer, in insertion in use that two electrodes are parallel to each other and at interval the environment to be measured, utilize the conduction liquation to form the loop, can make the present invention in the middle of measurement environment, carry out temperature survey as high temperature such as liquid metals, fused-salt bath, high-temperature salt furnace, high-temperature plasma conduction.
Description of drawings:
Fig. 1 is the structural representation of embodiment one, Fig. 2 is the structural representation of embodiment two, Fig. 3 is the structural representation of embodiment three, Fig. 4 is the structural representation of embodiment four, and Fig. 5 is the thermoelectrical potential-thetagram when using in the air furnace of embodiment one in 0～1500 ℃ of temperature range.
Embodiment one: specify below in conjunction with Fig. 1, it comprises hollow edged electrode 2, high-temperature insulating layer 3 and rod-shaped electrode 4 present embodiment, and wherein rod-shaped electrode 4 is by MoSi
2Make, hollow edged electrode 2 is made by SiC, the lower surface sealing of hollow edged electrode 2, the inside of hollow edged electrode is inserted in the lower end of rod-shaped electrode 4, joins between the inner bottom surface of the lower surface of rod-shaped electrode 4 and hollow edged electrode 2, is provided with high-temperature insulating layer 3 between the inwall of the side of rod-shaped electrode 4 and hollow edged electrode 2, the sealing part perfusion high temperature flexible silicon fluid sealant 5 of hollow edged electrode 2 upper ends, the top of the upper end of hollow edged electrode 2 and rod-shaped electrode 4 is respectively equipped with signal output terminal 9, and wherein, high-temperature insulating layer 3 is by Al
2O
3Or the pipe made of MgO or CaO or by Al
2O
3Or MgO or CaO powder are filled.As shown in Figure 5, when using in the air furnace of present embodiment between 400 ℃～1500 ℃, the output of its thermoelectrical potential and the sexual intercourse of temperature basic symbols zygonema.The present invention should guarantee that measuring junction is in lower temperature, and preferably can keep stable in measuring process.If the measuring junction temperature variation is bigger, can increase the length of thermopair, perhaps taking necessary cooling provision, as air-cooled or water-cooled, so that obtain the higher temperature measurement result of precision.
Embodiment two: specify below in conjunction with Fig. 2.The difference of present embodiment and embodiment one is to have additional conduction articulamentum 1 between the inner bottom surface of the lower surface of rod-shaped electrode 4 and hollow edged electrode 2, and described conduction articulamentum 1 is to utilize Ti between the inner bottom surface of the lower surface of rod-shaped electrode 4 and hollow edged electrode 2
3SiC
2Be welded.Present embodiment is owing to adopt Ti between two electrodes
3SiC
2Welding can guarantee that two electrodes maintenance excellent contact is measured and made to two electrodes among the present invention in the hot environment below 1600 ℃.
Embodiment three: the difference of present embodiment and embodiment one is that the conduction articulamentum 1 that it is set up is to coat the platinum coating that conduction platinum slurry forms after 1 hour at 900 ℃ of sintering respectively in the lower surface of rod-shaped electrode 4 and the inner bottom surface of hollow edged electrode 2 after diamond lap is handled.Present embodiment can make the present invention measure under 1800 ℃ high temperature.
Embodiment four: specify below in conjunction with Fig. 3, present embodiment and embodiment one, two and threes' difference is that it also comprises regulating spring 6, regulates sleeve pipe 7, washer 7-1 and gland 8.Regulating the lower end of sleeve pipe 7 and the upper end of hollow edged electrode 2 screws, the upper end of regulating pipe box 7 is provided with the round-meshed catch 7-1 in center, regulating spring 6 is set in the outside on rod-shaped electrode 4 tops, screwing between the circular hole at catch 7-1 center and the bottom of regulating spring 6, fixedlys connected with gland 8 in the upper end of regulating spring 6.Present embodiment makes the present invention can keep excellent contact between two electrodes in hot environment owing to adopted regulating spring 6, adjusting sleeve pipe 7, washer 7-1 and gland 8.
Embodiment five: specify below in conjunction with Fig. 4, present embodiment comprises rod-shaped electrode 4-1, high-temperature insulating layer 3 and No. two rod-shaped electrode 4-2 No. one, the sidewall outside of a rod-shaped electrode 4-1 and No. two rod-shaped electrode 4-2 is covered with high-temperature insulating layer 3, parallel to each other and leave setting at interval between rod-shaped electrode 4-1 and No. two rod-shaped electrode 4-2, the last top of a rod-shaped electrode 4-1 and No. two rod-shaped electrode 4-2 has additional signal output terminal 9, and rod-shaped electrode 4 is by MoSi
2Make, rod-shaped electrode 1 is made by SiC.Present embodiment is shaft-like owing to two electrodes are made, and is covered with a layer insulating in the outside of two electrodes.Can make in insertion two electrodes are parallel to each other and at interval the environment to be measured during use the present invention can as high temperature such as liquid metals, fused-salt bath, high-temperature salt furnace, the high-temperature plasma measurement environment of conducting electricity in the middle of carry out temperature survey.
Embodiment six: specify below in conjunction with Fig. 4, the difference of present embodiment and embodiment four is that it also comprises the arc-spark stand 10 of insulation, arc-spark stand 10 and a rod-shaped electrode 4-1 and No. two mutually perpendicular being fixed together of rod-shaped electrode 4-2 of insulation, other composition is identical with embodiment five with connected mode.Present embodiment can make not produce in use between two electrodes and relatively move.
Claims (4)
1, assembled ceramic electric thermo-couple, it comprises hollow edged electrode (2), high-temperature insulating layer (3) and rod-shaped electrode (4), one of them electrode is by MoSi
2Make, another electrode is made by SiC, the lower surface sealing of hollow edged electrode (2), the inside of hollow edged electrode (2) is inserted in the lower end of rod-shaped electrode (4), join between the inner bottom surface of the lower surface of rod-shaped electrode (4) and hollow edged electrode (2), be provided with high-temperature insulating layer (3) between the inwall of the side of rod-shaped electrode (4) and hollow edged electrode (2), hollow edged electrode (2) upper end is provided with elastic sealing layer (5), it is characterized in that also comprising regulating spring (6), regulate sleeve pipe (7), catch (7-1) and gland (8), regulating the lower end of sleeve pipe (7) and the upper end of hollow edged electrode (2) screws, the upper end of regulating pipe box (7) is provided with the round-meshed catch in center (7-1), regulating spring (6) is set in the outside on rod-shaped electrode (4) top, screwing between the circular hole at catch (7-1) center and the bottom of regulating spring (6), fixedlys connected with gland (8) in the upper end of regulating spring (6).
2, assembled ceramic electric thermo-couple according to claim 1, it is characterized in that having additional conduction articulamentum (1) between the inner bottom surface of the lower surface of rod-shaped electrode (4) and hollow edged electrode (2), described conduction articulamentum (1) is to utilize Ti between the inner bottom surface of the lower surface of rod-shaped electrode (4) and hollow edged electrode (2)
3SiC
2Be welded.
3, assembled ceramic electric thermo-couple according to claim 1, it is characterized in that having additional conduction articulamentum (1) between the inner bottom surface of the lower surface of rod-shaped electrode (4) and hollow edged electrode (2), described conduction articulamentum (1) is to coat the platinum coating that conduction platinum slurry forms after 1 hour at 900 ℃ of sintering respectively at the inner bottom surface of the lower surface of rod-shaped electrode (4) and hollow edged electrode (2) after diamond lap is handled.
4, assembled ceramic electric thermo-couple according to claim 1 is characterized in that the upper end of hollow edged electrode (2) and the top of rod-shaped electrode (4) have additional signal output terminal (9) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100096787A CN100343638C (en) | 2005-01-28 | 2005-01-28 | Assembled ceramic electric thermo-couple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100096787A CN100343638C (en) | 2005-01-28 | 2005-01-28 | Assembled ceramic electric thermo-couple |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1645074A CN1645074A (en) | 2005-07-27 |
| CN100343638C true CN100343638C (en) | 2007-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100096787A Expired - Fee Related CN100343638C (en) | 2005-01-28 | 2005-01-28 | Assembled ceramic electric thermo-couple |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343639C (en) * | 2005-09-29 | 2007-10-17 | 哈尔滨工业大学 | Heterogeneous ceramic temperature sensor and its preparing method |
| CN103245430B (en) * | 2013-05-02 | 2016-08-17 | 大连交通大学 | A kind of needle-like coaxial thin-film thermocouple for measuring transient temperature |
| CN104089715A (en) * | 2014-07-29 | 2014-10-08 | 中国核动力研究设计院 | Thermocouple insulation locator, mounting method thereof and wall temperature measuring device |
| CN113736985B (en) * | 2021-11-08 | 2022-01-21 | 天霖(张家港)电子科技有限公司 | Sealing device for measuring temperature of steel coil in bell-type annealing furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2288908A (en) * | 1994-04-27 | 1995-11-01 | Rowan Technologies Ltd | Ceramic thermocouple |
| CN1229189A (en) * | 1998-01-12 | 1999-09-22 | 株式会社五十铃硅酸盐研究所 | Electric thermo-couple for measuring temp. of metal solution |
| CN2497292Y (en) * | 2001-09-21 | 2002-06-26 | 江苏大学 | Semi-armoured sliding thermometric heat-couple |
-
2005
- 2005-01-28 CN CNB2005100096787A patent/CN100343638C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2288908A (en) * | 1994-04-27 | 1995-11-01 | Rowan Technologies Ltd | Ceramic thermocouple |
| CN1229189A (en) * | 1998-01-12 | 1999-09-22 | 株式会社五十铃硅酸盐研究所 | Electric thermo-couple for measuring temp. of metal solution |
| CN2497292Y (en) * | 2001-09-21 | 2002-06-26 | 江苏大学 | Semi-armoured sliding thermometric heat-couple |
Non-Patent Citations (1)
| Title |
|---|
| 金属陶瓷用于液态金属连续测温的研究 王建军，周俐，王雪松，邹琳江，安徽工业大学学报，第1卷第19期 2002 * |
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| CN1645074A (en) | 2005-07-27 |
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