CN202033120U - Novel special thermocouple for pipeline of hot air furnace - Google Patents
Novel special thermocouple for pipeline of hot air furnace Download PDFInfo
- Publication number
- CN202033120U CN202033120U CN2011201395698U CN201120139569U CN202033120U CN 202033120 U CN202033120 U CN 202033120U CN 2011201395698 U CN2011201395698 U CN 2011201395698U CN 201120139569 U CN201120139569 U CN 201120139569U CN 202033120 U CN202033120 U CN 202033120U
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- CN
- China
- Prior art keywords
- silicon nitride
- thermocouple
- pipeline
- protection tube
- hot air
- 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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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to a novel special thermocouple for a pipeline of a hot air furnace, which has a lubricating performance and good resistance against wear, high temperature and low temperature. The special thermocouple comprises a silicon nitride protection tube (1), a thermocouple shell (2) and a flange (3), and the silicon nitride protection tube (1) penetrates through the flange (3) to be connected with the thermocouple shell (2) and is made of atomic crystal silicon nitride. The silicon nitride protection tube is adopted for measurement of the pipeline of the hot air furnace. Silicon nitride is a high-level refractory and hard material, has good lubricating performance, high toughness and good wear resistance and belongs to the atomic crystal. Moreover, silicon nitride has resistance against oxidation at the high temperature and also has resistance against cold and hot impact, no cracking can be caused even in rapid cooling and then rapid heating, the density is high, the sealing performance is good, and intrusion of corrosive gases can be avoided. When the thermocouple is installed on a hot air pipeline for temperature measurement, no cracking can be caused as a result of side air blowing or air leakage. Therefore, the service life of the thermocouple is prolonged. Moreover, the price of the material is low, and the cost is further reduced.
Description
Technical field
The utility model relates to a kind of heat generator pipeline special electric thermo-couple, particularly a kind of novel heat generator pipeline special electric thermo-couple.
Background technology
The present domestic many kinds of thermopairs that have generally all adopt corundum and silit as protection tube in the occasion of having relatively high expectations.But the thermopair that is used in thermometric in the heat generator pipeline is all very short serviceable life; common thermopair adopts corundum as protection tube; when measuring the heat generator pipe temperature; there are crosswind and pipeline air leakage phenomena in the pipeline; because the toughness of alundum tube is good inadequately, very easily fracture in the single-phase pressurized and the temperature difference that causes of being leaked out.In the heat generator pipeline, exist some complexity and etchant gas; it mainly is sulfur dioxide gas; because silit protection tube poor air-tightness; cause gas to enter making in the protecting tube gas generation chemical reaction that produces in precious metal and the smelting process and brittle failure; cause the necessary integral replacing of thermopair; change inconvenience, and the cost height.
Summary of the invention
According to technical matters set forth above; the utility model provides a kind of novel heat generator pipeline special electric thermo-couple with lubricity, wear-resistant, high-low temperature resistant; form by silicon nitride protection tube (1), thermopair shell (2), flange (3); it is characterized in that silicon nitride protection tube (1) passes flange (3) and links to each other with thermopair shell (2), silicon nitride protection tube (1) is made up of the atomic crystal silicon nitride.
The beneficial effects of the utility model are: the utility model uses the silicon nitride protection tube to measure the heat generator pipeline; silicon nitride is a high grade refractory, and it is a kind of superhard material, and itself has lubricity; toughness is strong; and wear-resistant, be atomic crystal, anti-oxidant during high temperature; and it can also resist thermal shock; can be heated in air more than 1000 ℃, sharply cooling sharply heating can be not cracked more yet.Silicon nitride density height, sealing is strong, can prevent the intrusion of corrosive gas.It is installed on hot air duct carry out thermometric and can not rupture because of crosswind and the influence of leaking out, simultaneously etchant gas and complicated gas are isolated with the interior precious metal material of pipe, avoided precious metal material because of the chemical reaction brittle failure, improved the serviceable life of thermopair, and material price is cheap, and then has reduced cost.
Description of drawings
Fig. 1 is a front view of the present utility model.
Embodiment
According to shown in Figure 1; silicon nitride protection tube of the present utility model (1) passes flange (3) and links to each other with thermopair shell (2); the novel heat generator pipeline special electric thermo-couple that assembles is put into heat generator pipeline thermometric, and novel heat generator pipeline special electric thermo-couple can be measured the temperature of measured point according to electric principle when there are the temperature difference in the measuring junction of the novel heat generator pipeline of the utility model special electric thermo-couple and cold junction.
Claims (1)
1. novel heat generator pipeline special electric thermo-couple; form by silicon nitride protection tube (1), thermopair shell (2), flange (3); it is characterized in that silicon nitride protection tube (1) passes flange (3) and links to each other with thermopair shell (2), silicon nitride protection tube (1) is made up of the atomic crystal silicon nitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201395698U CN202033120U (en) | 2011-05-05 | 2011-05-05 | Novel special thermocouple for pipeline of hot air furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201395698U CN202033120U (en) | 2011-05-05 | 2011-05-05 | Novel special thermocouple for pipeline of hot air furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033120U true CN202033120U (en) | 2011-11-09 |
Family
ID=44895414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201395698U Expired - Fee Related CN202033120U (en) | 2011-05-05 | 2011-05-05 | Novel special thermocouple for pipeline of hot air furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033120U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045343A (en) * | 2016-06-07 | 2016-10-26 | 广东韶钢松山股份有限公司 | Protection tube of thermocouple for parallel-flow heat storage type double-chamber lime shaft kiln |
| CN108303188A (en) * | 2018-02-01 | 2018-07-20 | 辽宁伊菲科技股份有限公司 | A kind of manufacturing method of silicon nitride secondary protection tube |
-
2011
- 2011-05-05 CN CN2011201395698U patent/CN202033120U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045343A (en) * | 2016-06-07 | 2016-10-26 | 广东韶钢松山股份有限公司 | Protection tube of thermocouple for parallel-flow heat storage type double-chamber lime shaft kiln |
| CN108303188A (en) * | 2018-02-01 | 2018-07-20 | 辽宁伊菲科技股份有限公司 | A kind of manufacturing method of silicon nitride secondary protection tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20120505 |