CN2148954Y - Oxidation resisting tungsten-rhenium thermocouple - Google Patents
Oxidation resisting tungsten-rhenium thermocouple Download PDFInfo
- Publication number
- CN2148954Y CN2148954Y CN 92220331 CN92220331U CN2148954Y CN 2148954 Y CN2148954 Y CN 2148954Y CN 92220331 CN92220331 CN 92220331 CN 92220331 U CN92220331 U CN 92220331U CN 2148954 Y CN2148954 Y CN 2148954Y
- Authority
- CN
- China
- Prior art keywords
- niobium
- tungsten
- rhenium
- corundum
- thermocouple
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an oxidation resisting tungsten-rhenium thermocouple, comprising an outer protective jacket, ceramic beads, a tungsten-rhenium thermocouple core, and a ceramic cap, wherein, the ceramic cap is fixedly connected with the outer protective jacket of corundum by glass slurry; a niobium tube or a niobium wire which is fixedly connected by the glass slurry is pierced in the ceramic cap as signal output. At the same time, as the thermal expansion coefficient of niobium is similar to the glass slurry and the corundum, a sealed end can not crack to leak gases and cause tungsten-rhenium to be oxidized under high-temperature operating conditions. The utility model enhances the oxidation resisting performance of the thermocouple, prolongs service life, and can form large-scale industrial production.
Description
The utility model relates to a kind of thermometric Wolfram rhenium heat electric couple that is used for worst hot case.
Mainly there is following several problem in existing Wolfram rhenium heat electric couple in the prior art:
(1), adopt ceramic and metal package or envelope of quartz glass more, the former costs an arm and a leg; The latter can not use under the situation of superhigh temperature, and sealing property is poor slightly.
(2), encapsulating structure is improper, gas leakage causes the galvanic couple oxidation easily, for example the gas leakage that at high temperature causes because of the difference of the various material expansion coefficient that adopt in the encapsulating structure.
The purpose of this utility model is to provide a kind of oxidation resistant tungsten-rhenium thermopair with anti-gas-leak encapsulating structure.
The utility model is to constitute like this: promptly it comprises outer jointing jacket, porcelain bead, W-Re idol core, porcelain cap, it is characterized in that the porcelain cap is affixed by glass paste and corundum outer jointing jacket, pass two niobium pipes in the porcelain cap, or a niobium pipe, a niobium silk, they are affixed by glass paste and porcelain cap; One end of niobium pipe or niobium silk and the welding of W-Re idol core, other end welding nickel compensating wire.
Said structure of the present utility model can further specify by accompanying drawing.
Accompanying drawing is a diagrammatic cross-section of the present utility model.
Referring to accompanying drawing: the corundum that outer jointing jacket of the present utility model (1) adopts, the anodal WRe3(3 of tungsten-rhenium wire) and tungsten-rhenium wire negative pole WRe25(10) be through in the porcelain bead, locate to connect and constitute W-Re idol core at the solder joint (7) in hot junction.Corundum overcoat and tungsten-rhenium wire and porcelain bead etc. have all carried out the degassing in advance to be handled, and when assembling, adds getter, a spot of harmful gas that produces down with high temperature of selective adsorption remnants, protection tungsten-rhenium wire material.Because what adopt is nonevaporable getter, prevented that getter from high temperature influencing its temperature measurement accuracy because of evapotranspiring and being deposited on tungsten-rhenium wire material surface.Porcelain cap (5) is affixed by glass paste and corundum overcoat.Be installed with two niobium pipes (4) on the porcelain cap, they are affixed by glass paste (6) and porcelain cap.One end of niobium pipe welds with tungsten-rhenium wire (3,10) respectively, the other end and the welding of nickel compensating line.If the effective niobium silk of niobium replaces, can further reduce cost.
Because as above structure is arranged, the utility model compared with prior art has the following advantages:
1, adopt the corundum outside protective pipe, more economically practical, be conducive to reduce cost, and sealing property is better, can under higher temperature, work.
2, sealing-in place adopts the niobium pipe to utilize on the one hand its good electric conductivity as the output of the signal of telecommunication, thermal coefficient of expansion because of the thermal coefficient of expansion of niobium and glass paste and corundum is close on the other hand, and at high temperature can ftracture because the expansion of each material is different causes leaking gas. In addition, the niobium pipe also can be in encapsulation process as vacuumizing and the passage of inert gas injecting, thereby needn't establish special exhaust tube.
3, adopt the welding of niobium pipe or niobium silk and compensating wire, make structure more simple, can reduce cost.
Claims (1)
- A kind of oxidation resistant tungsten-rhenium silk thermopair, it comprises outer jointing jacket (1), porcelain bead (2), W-Re idol core (3,10), porcelain cap (5), it is characterized in that the porcelain cap is affixed by the outer jointing jacket of glass paste and corundum, be installed with two niobium pipes (4) in the porcelain cap, or a niobium pipe, a niobium silk, they are affixed by glass paste and porcelain cap; One end of niobium pipe or niobium silk and the welding of W-Re idol core, other end welding nickel compensating wire (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92220331 CN2148954Y (en) | 1992-09-19 | 1992-09-19 | Oxidation resisting tungsten-rhenium thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92220331 CN2148954Y (en) | 1992-09-19 | 1992-09-19 | Oxidation resisting tungsten-rhenium thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2148954Y true CN2148954Y (en) | 1993-12-08 |
Family
ID=33767381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92220331 Expired - Fee Related CN2148954Y (en) | 1992-09-19 | 1992-09-19 | Oxidation resisting tungsten-rhenium thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2148954Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651406A (en) * | 2016-02-23 | 2016-06-08 | 西安交通大学 | Encapsulation structure of tungsten-rhenium film thermocouple sensor chip and production method thereof |
| WO2017124780A1 (en) * | 2016-01-18 | 2017-07-27 | 西安交通大学 | Tungsten-rhenium thin-film thermocouple sensor containing high-temperature protective thin-film set and fabrication method therefor |
| CN111044554A (en) * | 2019-12-27 | 2020-04-21 | 郑州机械研究所有限公司 | Method for testing molten iron cooling curve |
| CN112898030A (en) * | 2021-02-04 | 2021-06-04 | 哈尔滨科友半导体产业装备与技术研究院有限公司 | Preparation method of thermocouple sheath for PVT (polyvinyl dichloride) high-temperature growth equipment |
-
1992
- 1992-09-19 CN CN 92220331 patent/CN2148954Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124780A1 (en) * | 2016-01-18 | 2017-07-27 | 西安交通大学 | Tungsten-rhenium thin-film thermocouple sensor containing high-temperature protective thin-film set and fabrication method therefor |
| CN105651406A (en) * | 2016-02-23 | 2016-06-08 | 西安交通大学 | Encapsulation structure of tungsten-rhenium film thermocouple sensor chip and production method thereof |
| CN105651406B (en) * | 2016-02-23 | 2019-04-12 | 西安交通大学 | A kind of encapsulating structure and preparation method thereof of W-Re film thermocouple sensing chip |
| CN111044554A (en) * | 2019-12-27 | 2020-04-21 | 郑州机械研究所有限公司 | Method for testing molten iron cooling curve |
| CN112898030A (en) * | 2021-02-04 | 2021-06-04 | 哈尔滨科友半导体产业装备与技术研究院有限公司 | Preparation method of thermocouple sheath for PVT (polyvinyl dichloride) high-temperature growth equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |