CN105486449B - High-temperature-resistance pressure sensor - Google Patents
High-temperature-resistance pressure sensor Download PDFInfo
- Publication number
- CN105486449B CN105486449B CN201610007670.5A CN201610007670A CN105486449B CN 105486449 B CN105486449 B CN 105486449B CN 201610007670 A CN201610007670 A CN 201610007670A CN 105486449 B CN105486449 B CN 105486449B
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- China
- Prior art keywords
- pressure sensor
- temperature
- pressure
- pilot plug
- outer cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0681—Protection against excessive heat
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of high-temperature-resistance pressure sensor, the centrally disposed air admission hole of base bottom, it is connected with the pressure guide hole in pilot plug；Heat dissipation cavity is formed between pilot plug and radiating outer cover, pressure guide hole, heat dissipation cavity connects with pressure detecting chamber, and in pressure sensor loading pedestal, the bottom of pressure sensor corresponds to the pressure detecting chamber in pilot portion beyond the Great Wall.The present invention is provided with pilot plug and radiating outer cover, while Transfer Medium pressure, medium temperature effectively is dissipated into consumption into external environment condition, the high temperature for avoiding pressure medium carrying is acted directly on sensing element and circuit chip.The pressure sensor operating mode of the present invention is good, therefore long working life, and functional reliability is high.
Description
Technical field
The present invention relates to sensor technical field, especially a kind of high-temperature-resistant gas or liquid-pressure pick-up component.
Background technology
Pressure sensor is in the various application occasions such as automobile, Aero-Space, business, industry, but for high-temperature medium
Pressure detecting is the problem of industry, and high temperature can cause sensing element and signal processing circuit chip in traditional pressure sensor
Damage or failure.
The content of the invention
A kind of the shortcomings of the applicant is easily failed for above-mentioned existing pressure sensor in hot environment, there is provided structure
Cleverly high-temperature-resistance pressure sensor, influence of the medium temperature to sensor can be effectively avoided, so as to expand pressure biography
The application field of sensor, it is particularly suitable for the pressure detecting of high-temperature gas or liquid.
The technical solution adopted in the present invention is as follows：
A kind of high-temperature-resistance pressure sensor, the centrally disposed air admission hole of base bottom, is connected with the pressure guide hole in pilot plug；
Heat dissipation cavity is formed between pilot plug and radiating outer cover, pressure guide hole, heat dissipation cavity connect with pressure detecting chamber, and pressure sensor loads base
In seat, the bottom of pressure sensor corresponds to the pressure detecting chamber in pilot portion beyond the Great Wall.
Further improvement as above-mentioned technical proposal：
The heat dissipation cavity is toroidal cavity.
Pilot beyond the Great Wall by outer cover wrapped up by week, after outer cover assembling that base, pilot plug, base combination is integral.
The base, the material of pilot plug are the non-conductor of heat.
The material of the outer cover is hot good conductor.
The single component or stand alone as two parts that the base is integrated with pilot plug.
The bottom periphery of the base is provided with connection screw thread.
The centrally disposed inlet opening of base bottom, for carrying out pressure detecting for liquid.
Beneficial effects of the present invention are as follows：
Pilot plug and radiating outer cover are provided with the pressure sensor structure of the present invention, while Transfer Medium pressure,
Effectively medium temperature is dissipated in external environment condition, avoid pressure medium carrying high temperature act directly on sensing element and
On circuit chip.
The pressure sensor of the present invention is arranged on the outer wall of container or pipeline, and the base with wall contacts is by poor thermal conductivity
Material be made, radiating outer cover be made up of the good material of thermal conductivity, the heat of container or tube wall is effectively isolated by base, container or
By the aperture of base and equally made of the material of poor thermal conductivity, the duct of pilot plug enters high-temperature gas inside pipeline
The test chamber of pressure sensor, by the passage that the aperture out of base is formed by pilot consent road to test chamber is closed
, gas does not flow almost in this confined space, has the characteristic of poor thermal conductivity using immobilising gas, and radiate outer cover
A small amount of heat that gas is carried in pressure transfer process is dissipated in surrounding enviroment so that the tested gas temperature of test chamber
It is greatly lowered, it is the environment temperature around a little higher than radiating outer cover to act on the gas temperature on pressure sensor,
The effective detection problem for solving high-temperature gas pressure.
The present invention between elevated temperature vessel or duct wall pipeline and pressure sensor by setting roundabout single-ended closing
Gas circuit, and gas in gas circuit is radiated using the outer cover that radiates, the gas temperature into test chamber is effectively reduced, makes pressure
Sensor can correctly detect the air pressure in high-temperature flue gas pipeline, while will not directly contact high-temperature gas.Due to base, pilot plug
It is the non-conductor of heat with pedestal material, therefore heat transfer will not occur for the tube wall of high temperature to pressure sensor.The present invention's
Pressure sensor operating mode is good, therefore long working life, and functional reliability is high.
Brief description of the drawings
Fig. 1 is to cut open figure in the present invention.
In figure：1st, base；2nd, outer cover；3rd, pedestal；4th, pilot plug；5th, pressure sensor；11st, air admission hole；12nd, spiral shell is coupled
Line；41st, pressure guide hole；42nd, heat dissipation cavity；43rd, pressure detecting chamber.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of the present invention is illustrated.
As shown in figure 1, high-temperature-resistance pressure sensor of the present invention is by base 1, radiating outer cover 2, pedestal 3, pilot plug
4th, pressure sensor 5 etc. forms.
The bottom periphery of base 1 is provided with connection screw thread 12, for sensor to be arranged on into container or pipeline outer wall, wherein
The heart has air admission hole 11.Air admission hole 11 on base 1 is connected with the pressure guide hole 41 in pilot plug 4, and pressure sensor 5 loads pedestal
In 3, pedestal 3 also includes connector combination body, and the bottom of pressure sensor 5 connects with the pressure detecting chamber 43 on the top of pilot plug 4.
Base 1 and pilot plug 4 by poor thermal conductivity material（Such as high-temperature resistance plastice）It is made；The outer cover 2 that radiates is good by thermal conductivity
Material（Such as aluminium or copper）It is made；Do not require for the material thermal conductivity of pedestal 3, generally also formed by plastic injection.
A heat dissipation cavity 42 is formed between pilot plug 4 and radiating outer cover 2, heat dissipation cavity 42 is a toroidal cavity, makes high temperature
The inwall of gas and radiating outer cover 2 has as far as possible big contact area, to reach the purpose fully to radiate.
High-temperature gas enters heat dissipation cavity 42 through air admission hole 11 and pressure guide hole 41 during work, and when flowing through heat dissipation cavity 42, it is taken
The heat of band is largely dispersed into air by radiating outer cover 2, and the gas after being cooled acts on pressure into pressure detecting chamber 43
The sensitive part of the bottom of force snesor 5, its pressure value are come out by effective detection.The temperature of high temperature pressure gas imports after being lowered
Test chamber, but its pressure will not change.
What is entered by air admission hole 11 due to high-temperature gas is a closed cavity, therefore in airtight cavity almost
It is immobilising, when gas pressure increases, because volume is compressed, have a small amount of gas and be pressed into intracavitary, so what it was carried
Heat is very limited, and radiating outer cover 2 is enough to distribute most of heat, and pressure detecting chamber 43 is lowered into so as to reach
Gas temperature purpose.
For the pressure detecting of high-temp liquid, due to the gas that is more thermally conductive than of liquid, therefore the effect meeting of radiating and cooling
It is weaker, can be by reducing inlet opening（Similar to air admission hole）Latus rectum improved, still with positive effect.
Above description is explanation of the invention, is not the restriction to invention, without departing from the spirit of the invention,
The present invention can make any type of modification.
Claims (9)
- A kind of 1. high-temperature-resistance pressure sensor, it is characterised in that：Base（1）Bottom sets air admission hole（11）, pilot plug（4）With dissipating Hot outer cover（2）Between form heat dissipation cavity（42）, air admission hole（11）, heat dissipation cavity（42）With pressure detecting chamber（43）Connection, pressure pass Sensor（5）Load pedestal（3）It is interior, pressure sensor（5）Detection faces correspond to pilot plug（4）The pressure detecting chamber on top（43）.
- 2. according to the high-temperature-resistance pressure sensor described in claim 1, it is characterised in that：Air admission hole（11）With pilot plug（4）It is interior Pressure guide hole（41）It is connected.
- 3. according to the high-temperature-resistance pressure sensor described in claim 1, it is characterised in that：The heat dissipation cavity（42）For annular sky Chamber.
- 4. according to the high-temperature-resistance pressure sensor described in claim 1, it is characterised in that：Pilot plug（4）Periphery passes through outer cover（2） Parcel, outer cover（2）By base after assembling（1）, pilot plug（4）, pedestal（3）It is combined into one.
- 5. according to the high-temperature-resistance pressure sensor described in claim 1, it is characterised in that：The base（1）, pilot plug（4）'s Material is the non-conductor of heat.
- 6. according to the high-temperature-resistance pressure sensor described in claim 1, it is characterised in that：The outer cover（2）Material to be hot Good conductor.
- 7. according to the high-temperature-resistance pressure sensor described in claim 1, it is characterised in that：The base（1）With pilot plug（4）For The single component of one stands alone as two parts.
- 8. according to the high-temperature-resistance pressure sensor described in claim 1, it is characterised in that：The base（1）Bottom periphery set It is equipped with connection screw thread（12）.
- 9. according to the high-temperature-resistance pressure sensor any one of claim 1 to claim 8, it is characterised in that：It is described Base（1）Bottom centre sets inlet opening, for carrying out pressure detecting for liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007670.5A CN105486449B (en) | 2016-01-07 | 2016-01-07 | High-temperature-resistance pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007670.5A CN105486449B (en) | 2016-01-07 | 2016-01-07 | High-temperature-resistance pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105486449A CN105486449A (en) | 2016-04-13 |
| CN105486449B true CN105486449B (en) | 2017-11-28 |
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ID=55673576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610007670.5A Active CN105486449B (en) | 2016-01-07 | 2016-01-07 | High-temperature-resistance pressure sensor |
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| Country | Link |
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| CN (1) | CN105486449B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806519B (en) * | 2016-04-29 | 2019-03-15 | 中国农业大学 | A kind of pressure sensor and manufacturing method based on low-temperature co-fired ceramics |
| CN107631833B (en) * | 2017-10-17 | 2023-11-03 | 松诺盟科技有限公司 | Ultra-high temperature pressure sensor and manufacturing method thereof |
| CN110006584A (en) * | 2019-04-11 | 2019-07-12 | 西安培华学院 | A kind of high-temperature-resistance pressure sensor |
| CN110057491B (en) * | 2019-05-22 | 2021-03-23 | 深圳市美信泰电子有限公司 | High-temperature sensor |
| CN112414610B (en) * | 2020-11-25 | 2022-03-18 | 中北大学 | High-temperature pressure sensor and preparation method thereof |
| CN114321728B (en) * | 2021-11-25 | 2023-10-27 | 中铁大桥科学研究院有限公司 | Pump prying system and construction method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2849686Y (en) * | 2005-07-08 | 2006-12-20 | 沈阳仪表一厂 | High-temp high-pressure vibration-proof pressure-meter |
| CN202393557U (en) * | 2011-12-12 | 2012-08-22 | 天津市岳泰创新科技服务有限公司 | High-temperature-resistant pressure gauge |
| CN202869735U (en) * | 2012-09-05 | 2013-04-10 | 佛山市浩捷电子仪器有限公司 | High-temperature micro-pressure transmitter |
| CN205317403U (en) * | 2016-01-07 | 2016-06-15 | 无锡莱顿电子有限公司 | High -temperature pressure sensor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013242157A (en) * | 2012-05-17 | 2013-12-05 | Denso Corp | Pressure sensor |
| WO2015105102A1 (en) * | 2014-01-08 | 2015-07-16 | 株式会社テイエルブイ | Sensor device |
-
2016
- 2016-01-07 CN CN201610007670.5A patent/CN105486449B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2849686Y (en) * | 2005-07-08 | 2006-12-20 | 沈阳仪表一厂 | High-temp high-pressure vibration-proof pressure-meter |
| CN202393557U (en) * | 2011-12-12 | 2012-08-22 | 天津市岳泰创新科技服务有限公司 | High-temperature-resistant pressure gauge |
| CN202869735U (en) * | 2012-09-05 | 2013-04-10 | 佛山市浩捷电子仪器有限公司 | High-temperature micro-pressure transmitter |
| CN205317403U (en) * | 2016-01-07 | 2016-06-15 | 无锡莱顿电子有限公司 | High -temperature pressure sensor |
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| Publication number | Publication date |
|---|---|
| CN105486449A (en) | 2016-04-13 |
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