CN207472481U - High precision small pressure sensor - Google Patents
High precision small pressure sensor Download PDFInfo
- Publication number
- CN207472481U CN207472481U CN201721095061.6U CN201721095061U CN207472481U CN 207472481 U CN207472481 U CN 207472481U CN 201721095061 U CN201721095061 U CN 201721095061U CN 207472481 U CN207472481 U CN 207472481U
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- housing
- pressure
- high precision
- pressure sensor
- probe
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Abstract
The utility model is related to high precision small pressure sensor, belong to air pressure detection field.It includes the ceramic core set gradually, gold-germanium alloy film layer, flexible sheet and the housing for accommodating three, the housing upper and lower ends are respectively fixed with probe and end cap, the enclosure interior is provided with liner, pressure sensitive chip is equipped between the ceramic core and gold-germanium alloy film layer, the flexible sheet, probe and housing collectively form test cavity, pressure sensitive chip, which is connected with, is arranged on high temperature resistant display screen of the surface of shell for display medium pressure, and ceramic core, end cap and housing form installation cavity.The usefulness of the utility model is：The liner made of teflon material, it is corrosion-resistant；Pressure-detecting device is mounted on by plastic cement installed part in the installation cavity of housing, vibration resistance, impact resistance；Using flexible sheet, probe and housing made of metal, wear-resistant, operating temperature range is wide；Measure synthesis precision height, operation steadily in the long term.
Description
Technical field
The utility model is related to high precision small pressure sensor, belong to air pressure detection field.
Background technology
The principle of direct pressure measurement type pressure sensor currently on the market is：By medium（Gas or liquid）It is imported by connector
In one confined space surrounded by pressure measurement core and pipeline, pressure medium directly acts on to measure to be caused in core surface
Deformation, this small variation passes to the electronic surveying element at the back side, Chip-R or piezo-electric crystal, according to the big of deflection
It is small to be transformed into corresponding electric signal, it is sent out by conducting wire to the circuit of needs.Connector imports and conduit enclosure is usually with not
Rust Steel material is made, and can also be corroded in the highly acid of high temperature or the medium of strong basicity, in order to solve the above-mentioned technical problem,
In the prior art through the connector importing frequently with plastic material and conduit enclosure, therefore pipe shaft shell is done using teflon material, but
It is that teflon material pipe shaft Enclosure Strength is poor, can not accomplishes to measure the sensor of high pressure, use the pipe shaft of Teflon
The pressure sensor that can only generally accomplish below 2MPa of shell, then larger pressure just cannot withstand and reveals damage.
Invention content
The purpose of this utility model is to provide one kind can accurately detect medium pressure in high temperature, the environment of high corrosion
High precision small pressure sensor.
For more than technical problem, the high precision small pressure sensor of the utility model design, including setting gradually
Ceramic core, gold-germanium alloy film layer, flexible sheet and the housing for accommodating three, the housing upper and lower ends are respectively fixed with
Probe and end cap, the enclosure interior are provided with liner, and pressure sensitive is equipped between the ceramic core and gold-germanium alloy film layer
Chip, the flexible sheet, probe and housing collectively form test cavity, and pressure sensitive chip, which is connected with, is arranged on surface of shell
For the high temperature resistant display screen of display medium pressure, ceramic core, end cap and housing form installation cavity.
Preferably, it is installed by the way of interference fit between the end cap and housing, by the way of interference fit
Replace previous welding packaged type, it is simple in structure, it is easy for installation.
It is connected on pressure sensitive chip and high temperature resistant display screen preferably, being provided in the installation cavity
Pressure-detecting device, pressure-detecting device are used to the small deformation of flexible sheet being converted into pressure parameter including showing in high temperature resistant
In display screen, which uses pressure detecting ripe in the market and interlock circuit, to reach best accuracy of detection,
By due to using the prior art, it will not go into details herein.
Preferably, the pressure-detecting device periphery is provided with plastic cement installed part, pressure-detecting device is pacified by plastic cement
Piece installing is mounted in the installation cavity of housing, and pressure-detecting device is fixed using plastic cement installed part, can reduce vibration
With influence of the impact to pressure-detecting device, interference of the external environment to pressure-detecting device internal circuit can also be reduced, is carried
The stability of the high course of work.
It, can be using metal material preferably, the flexible sheet, probe and housing are made of metal material
Normal operation under high temperature, and metal material is wear-resistant can improve integrally-built service life.
Preferably, the liner is made of teflon material, it is easily rotten since liner wants Long Term Contact testing medium
Erosion can significantly improve the corrosion resistance of liner using teflon material, and then improve integrally-built service life.
Compared with prior art, the usefulness of the utility model is：The liner made of teflon material, corrosion resistant
Erosion；Pressure-detecting device is mounted on by plastic cement installed part in the installation cavity of housing, vibration resistance, impact resistance；Using made of metal
Into flexible sheet, probe and housing, wear-resistant, operating temperature range is wide；Measure synthesis precision height, operation steadily in the long term.
Description of the drawings
The utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the overall structure figure of the utility model；
Fig. 2 is partial enlarged view at A.
In figure：1st, ceramic core；2nd, gold-germanium alloy film layer；3rd, flexible sheet；4th, housing；41st, it pops one's head in；42nd, end cap；5th, it is interior
Lining；6th, pressure sensitive chip；7th, cavity is tested；8th, high temperature resistant display screen；9th, installation cavity；91st, pressure-detecting device；10th, it moulds
Glue installed part.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected range.
The fingers such as " on ", " under ", " vertical ", " interior ", " outer " it should be noted that term in the description of the present invention,
The orientation or position relationship shown is based on orientation shown in the drawings or position relationship, merely to just describing the utility model and letter
Change description rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that limitation to the utility model.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " setting ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；It can be directly connected, can also be indirectly connected by intermediary, be can also be inside two elements
Connection for the ordinary skill in the art, can understand tool of the above-mentioned term in the utility model with concrete condition
Body meaning.
As depicted in figs. 1 and 2, the utility model is related to high precision small pressure sensor, have housing 4, housing 4
Upper and lower ends are respectively arranged with end cap 41 and probe 42, and liner 5 is internally provided in housing 4, and ceramic core is equipped at 5 middle part of liner
1,1 lower section of ceramic core is connected with pressure sensitive chip 6, and 6 lower section of pressure sensitive chip is provided with flexible sheet 3, the elastic membrane
Piece 3 has gold-germanium alloy film layer 2, and the downside of pressure sensitive chip 6 is inconsistent with gold-germanium alloy film layer 2, above ceramic core 1 with it is interior
Lining and end cap collectively form installation cavity 9, are provided with the miniature deformation of flexible sheet 3 being converted into installation cavity 9
The pressure-detecting device 91 of pressure intensity parameter, the pressure-detecting device 91 are that small deformation is converted into electric signal, on the market
Have matured product, need to only select according to actual needs, be additionally provided with and be connected on pressure-detecting device 91 in 4 outside of housing
For showing the high temperature resistant display screen 8 of pressure intensity parameter, probe 41, liner 5 and flexible sheet 3 collectively form test cavity 7.
Preferably, the plastic cement installed part 10 for fixation pressure detection device 91 is provided in installation cavity 9, using plastic cement
Pressure-detecting device is fixed in installed part, can reduce vibration and impact the influence to pressure-detecting device, can also subtract
Few interference of the external environment to pressure-detecting device internal circuit improves the stability of the course of work.
Preferably, the flexible sheet 3, probe 41 and housing 4 are made of metal material, and use metal material can be with
Normal operation at high temperature, and metal material is wear-resistant can improve integrally-built service life, and liner 5 is by Teflon material
Material is made, and since liner wants Long Term Contact testing medium, easily corrodes, and the resistance to of liner can be significantly improved using teflon material
Corrosivity, and then improve integrally-built service life.
Preferably, it is installed by the way of interference fit between the end cap 42 and housing 4, by the way of interference fit
Replace previous welding packaged type, it is simple in structure, it is easy for installation.
It is emphasized that：The above is only the preferred embodiment of the present utility model, and not the utility model is appointed
What formal limitation, every any simple modification made according to the technical essence of the utility model to above example, etc.
With variation and modification, in the range of still falling within technical solutions of the utility model.
Claims (6)
1. a kind of high precision small pressure sensor, it is characterised in that：It includes the ceramic core set gradually（1）, gold germanium close
Golden membranous layer（2）, flexible sheet（3）And accommodate the housing of three（4）, the housing（4）Upper and lower ends are respectively fixed with probe
（41）And end cap（42）, the housing（4）It is internally provided with liner（5）, the ceramic core（1）With gold-germanium alloy film layer（2）
Between be equipped with pressure sensitive chip（6）, the flexible sheet（3）, probe（41）With housing（4）Collectively form test cavity（7）,
Pressure sensitive chip（6）It is connected with and is arranged on housing（4）Surface is used for the high temperature resistant display screen of display medium pressure（8）, it is described
Ceramic core（1）, end cap（42）And housing（4）Form installation cavity（9）.
2. high precision small pressure sensor according to claim 1, it is characterised in that：The end cap（42）With housing
（4）Between using interference fit by the way of install.
3. high precision small pressure sensor according to claim 1, it is characterised in that：The installation cavity（9）Inside set
It is equipped with and is connected to pressure sensitive chip（6）With high temperature resistant display screen（8）On pressure-detecting device（91）.
4. high precision small pressure sensor according to claim 3, it is characterised in that：The pressure-detecting device（91）
Periphery is provided with plastic cement installed part（10）, pressure-detecting device（91）Pass through plastic cement installed part（10）Installation mounted on housing is empty
Chamber（9）It is interior.
5. high precision small pressure sensor according to claim 1, it is characterised in that：The flexible sheet（3）, probe
（41）And housing（4）It is made of metal material.
6. high precision small pressure sensor according to claim 1, it is characterised in that：The liner（5）By Teflon
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721095061.6U CN207472481U (en) | 2017-08-30 | 2017-08-30 | High precision small pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721095061.6U CN207472481U (en) | 2017-08-30 | 2017-08-30 | High precision small pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207472481U true CN207472481U (en) | 2018-06-08 |
Family
ID=62268769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721095061.6U Expired - Fee Related CN207472481U (en) | 2017-08-30 | 2017-08-30 | High precision small pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207472481U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871664A (en) * | 2018-06-26 | 2018-11-23 | 成都英鑫光电科技有限公司 | Air pressure measuring apparatus and system |
| CN111638248A (en) * | 2020-07-03 | 2020-09-08 | 成都昶艾电子科技有限公司 | High-temperature-resistant gas sensor and packaging method thereof |
-
2017
- 2017-08-30 CN CN201721095061.6U patent/CN207472481U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871664A (en) * | 2018-06-26 | 2018-11-23 | 成都英鑫光电科技有限公司 | Air pressure measuring apparatus and system |
| CN108871664B (en) * | 2018-06-26 | 2024-01-19 | 成都英鑫光电科技有限公司 | Air pressure measuring device and system |
| CN111638248A (en) * | 2020-07-03 | 2020-09-08 | 成都昶艾电子科技有限公司 | High-temperature-resistant gas sensor and packaging method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215011 No. 161, Feng Feng street, hi tech Zone, Jiangsu, Suzhou Patentee after: Suzhou Shangke Product Testing Center Co.,Ltd. Address before: 215011 No. 161, Feng Feng street, hi tech Zone, Jiangsu, Suzhou Patentee before: SUZHOU SHANGKE PRODUCT TEST CENTRE |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 |