CN110987214A - High temperature test environment sensor protector - Google Patents
High temperature test environment sensor protector Download PDFInfo
- Publication number
- CN110987214A CN110987214A CN201911395156.3A CN201911395156A CN110987214A CN 110987214 A CN110987214 A CN 110987214A CN 201911395156 A CN201911395156 A CN 201911395156A CN 110987214 A CN110987214 A CN 110987214A
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- CN
- China
- Prior art keywords
- metal
- elastic structure
- temperature test
- test environment
- environment sensor
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- 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.)
- Pending
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2205/00—Application of thermometers in motors, e.g. of a vehicle
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention relates to a high-temperature test environment sensor device, in particular to a protection device of a high-temperature test environment sensor, which comprises a metal protection cover and a metal elastic structure, wherein the metal protection cover is positioned above a thermocouple wire, one end of the metal elastic structure is fixed on the metal protection cover, and the other end of the metal elastic structure touches the thermocouple wire. The metal protective cover is made of stainless steel materials, and the metal elastic structure is a spring. The invention solves the problem of instantaneous damage of the sensor. On the premise of not damaging the sensor and ensuring the reliability of the test result, the test is increased greatly frequently.
Description
Technical Field
The invention relates to a high-temperature test environment sensor device, in particular to a high-temperature test environment sensor protection device.
Background
At present, most of the thermocouple sensors used for temperature test in the environment of tail flame jet of the engine are made of tungsten-rhenium 3-25 or tungsten-rhenium 5-27 materials, the working ends of the two thermocouple sensors are shown in figure 1, and the working ends are generally directly exposed to air and directly exposed to the jet of the engine during test, and usually damaged within 0.01 second. As shown in fig. 2, in order to prolong the testing time, a metal shield can be added outside the working end to ensure that the sensor does not directly contact with the jet flow, the scheme is based on the basic principle of thermocouple testing, namely thermoelectric effect, electric potential can be generated when two different metals are connected and heated, and the intermediate conductor law that the size of the thermoelectric potential is not influenced when a third metal is connected between the two metals as long as the temperature of the joint is the same. At present, no measure for protecting the sensor is provided in the jet flow temperature test of the tail flame of the solid rocket engine, and the temperature sensor is damaged too fast under the high-speed jet flow environment of the tail flame of the engine.
Disclosure of Invention
The technical problems to be solved by the invention are as follows:
the invention provides a protective device of a high-temperature testing environment sensor, which aims to solve the problem of instantaneous damage of the sensor.
The technical scheme adopted for solving the technical problem is as follows:
the protection device for the high-temperature test environment sensor comprises a metal protection cover and a metal elastic structure, wherein the metal protection cover is positioned above a galvanic couple wire, one end of the metal elastic structure is fixed on the metal protection cover, and the other end of the metal elastic structure touches the galvanic couple wire.
Further, the metal protective cover is made of stainless steel materials.
Further, the metal elastic structure is a spring.
Has the advantages that:
the method for protecting the sensor based on the thermocouple working principle and the law of the intermediate conductor can greatly increase the test time on the premise of not damaging the sensor and ensuring the reliability of the test result.
Drawings
FIG. 1: a simple drawing of a working end of the tungsten-rhenium sensor;
FIG. 2: a simple diagram of the working end of the tungsten-rhenium sensor is added with a protective cover;
FIG. 3: a simple diagram of a working end of a protection scheme of a sensor and a protective cover;
wherein: 1. working end, 2. metal elastic structure.
Detailed Description
As shown in fig. 3, the protection device for the high-temperature test environment sensor comprises a metal protection cover and a metal elastic structure, wherein the metal protection cover is positioned above the thermocouple wires, one end of the metal elastic structure is fixed on the metal protection cover, and the other end of the metal elastic structure touches the thermocouple wires. The metal protective cover is made of stainless steel materials. The metal elastic structure is a spring. After the metal elastic structure is added, the processing of the protective cover can be higher than the length of the thermocouple wire as much as possible, so that the compression of the protective cover on the working end is avoided, and meanwhile, due to the fact that the metal conducts heat fast, in actual work, the sensor can quickly reach the state of T4= T3= T2= T1= T0, and therefore the response time cannot be greatly increased. Due to the law of intermediate conductors, as long as T4= T3= T2= T1= T0, the magnitude of the thermoelectric force of the sensor is consistent with that of the case of T2= T0 without a protective cover, and the test result is not influenced.
Claims (3)
1. The protection device for the high-temperature test environment sensor is characterized by comprising a metal protection cover and a metal elastic structure, wherein the metal protection cover is positioned above a thermocouple wire, one end of the metal elastic structure is fixed on the metal protection cover, and the other end of the metal elastic structure touches the thermocouple wire.
2. The high temperature test environment sensor protection device of claim 1, wherein the metal shield is a stainless steel material.
3. The high temperature test environment sensor protection device of claim 1, wherein the metal spring structure is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395156.3A CN110987214A (en) | 2019-12-30 | 2019-12-30 | High temperature test environment sensor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395156.3A CN110987214A (en) | 2019-12-30 | 2019-12-30 | High temperature test environment sensor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110987214A true CN110987214A (en) | 2020-04-10 |
Family
ID=70078892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911395156.3A Pending CN110987214A (en) | 2019-12-30 | 2019-12-30 | High temperature test environment sensor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110987214A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5458483A (en) * | 1977-10-19 | 1979-05-11 | Hitachi Ltd | Temperature measuring structure |
| CN103148962A (en) * | 2011-12-06 | 2013-06-12 | 天津有序环境科技发展有限公司 | Adjustable diameter spring soaking device and control method thereof |
| CN105424208A (en) * | 2015-10-30 | 2016-03-23 | 中电华辰（天津）精密测器股份公司 | Windproof safe thermocouple |
| CN207487840U (en) * | 2017-10-12 | 2018-06-12 | 江苏富联通讯技术有限公司 | A kind of Internet of Things sensor |
-
2019
- 2019-12-30 CN CN201911395156.3A patent/CN110987214A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5458483A (en) * | 1977-10-19 | 1979-05-11 | Hitachi Ltd | Temperature measuring structure |
| CN103148962A (en) * | 2011-12-06 | 2013-06-12 | 天津有序环境科技发展有限公司 | Adjustable diameter spring soaking device and control method thereof |
| CN105424208A (en) * | 2015-10-30 | 2016-03-23 | 中电华辰（天津）精密测器股份公司 | Windproof safe thermocouple |
| CN207487840U (en) * | 2017-10-12 | 2018-06-12 | 江苏富联通讯技术有限公司 | A kind of Internet of Things sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |
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| RJ01 | Rejection of invention patent application after publication |