CN201141791Y - Sensor for pressure measurement of high viscosity fluid - Google Patents
Sensor for pressure measurement of high viscosity fluid Download PDFInfo
- Publication number
- CN201141791Y CN201141791Y CNU2007200655475U CN200720065547U CN201141791Y CN 201141791 Y CN201141791 Y CN 201141791Y CN U2007200655475 U CNU2007200655475 U CN U2007200655475U CN 200720065547 U CN200720065547 U CN 200720065547U CN 201141791 Y CN201141791 Y CN 201141791Y
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- CN
- China
- Prior art keywords
- elastic body
- high viscosity
- viscosity fluid
- body diaphragm
- sensor
- 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 Fluid Pressure (AREA)
Abstract
The utility model discloses a sensor for measuring high viscosity fluid pressure, which comprises a base 1, an elastomer film 5 and a sensitive resistance 7, wherein the elastic film 5 is arranged at the most front end of the base 1 contacting with measurement medium, the sensitive resistance 7 is arranged inside the elastomer film 5. a wide-angle shallow cavity 6 is arranged at one side of the elastomer film 5 contacting with the measurement medium. The sensor for measuring high viscosity fluid pressure can not only solve the problem about high viscosity fluid pressure measurement but also has high frequency response.
Description
Technical field
The utility model relates to a kind of pressure transducer, particularly a kind of tonometric pressure transducer of high viscosity fluid that is used for.
Background technology
Pressure transducer is widely used in the pressure of measurement gas, liquid or steam.The structure of common pressure transducer is the rear end that elastic body is positioned at the pedestal that has the pressure connecting thread, detected fluid need could arrive responsive flexible sheet by long path (being called pressure-inducing nozzle or impulse chamber), the sensor of this structure is not suitable for measuring full-bodied fluid, and frequency response also is subjected to bigger restriction.
The utility model content
Technical problem to be solved in the utility model is the problem that is not suitable for measuring high viscosity fluid pressure at the sensor of traditional structure, provides a kind of and not only can solve the tonometric problem of high viscosity fluid, and have the sensor of very high frequency response.
In order to solve the problems of the technologies described above, the utility model provides is used for the tonometric sensor of high viscosity fluid, comprise pedestal, elastic body diaphragm and sensitive resistance, described elastic body diaphragm is arranged on the described pedestal and contacts foremost with measuring media, and described sensitive resistance is arranged at the inboard of described elastic body diaphragm.
The side that described elastic body diaphragm contacts with measuring media is provided with the shallow chamber of wide-angle.
Described elastic body diaphragm is welded on the front end of the pressure connecting thread of described pedestal.
That adopts technique scheme is used for the tonometric pressure transducer of high viscosity fluid, because the elastic body diaphragm is arranged on the pedestal and contacts foremost with measuring media, sensitive resistance is arranged at the inboard of described elastic body diaphragm, its principle of work is as follows: hydrodynamic pressure P only by one of elastic body diaphragm front end less than the shallow chamber of the dark wide-angle of 6mm, act directly on the elastic body diaphragm, make the elastic body diaphragm produce distortion, four sensitive resistances are manufactured with the composition Wheatstone bridge at the back side of elastic body diaphragm, the distortion of elastic body diaphragm changes the sensitive resistance resistance, Wheatstone bridge output and the proportional electric signal of pressure, in case of necessity, can utilize electronic circuit that the signal of electric bridge output is amplified, be transformed into the output of standard electric signal.
The beneficial effects of the utility model:
That adopts technique scheme is used for the tonometric sensor of high viscosity fluid, can effectively measure the pressure of high viscosity fluid, avoid high viscosity fluid in the impulse chamber, to deposit, stop up, simultaneously can be easily damage diaphragm when avoiding hard thing to clean long impulse chamber be cleaned in the impulse chamber.
This structure be used for the tonometric pressure transducer of high viscosity fluid, owing to there is not elongated impulse chamber, very sensitive to the reflection that pressure changes, its frequency response improves a lot than the sensor of traditional structure, is fit to will to seek advice high dynamic pressure measurement to frequency response and uses.
In sum, the utility model is a kind ofly not only can solve the tonometric problem of high viscosity fluid, and has the sensor of very high frequency response.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of elastic body diaphragm of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further described.
Referring to Fig. 1 and Fig. 2, elastic body diaphragm 5 is welded to the front end that the pedestal 1 that has pressure connecting thread 3 contacts with measuring media, the side that elastic body diaphragm 5 contacts with measuring media is only less than the shallow chamber 6 of the dark wide-angle of 6mm, inner lead support and circuit board support also are welded on the elastic body diaphragm 5, or are welded on the pedestal 1.The thickness of elastic body diaphragm 5 depends on the range ability of gaging pressure, does the deformation that the time spent produces and the pressure size is proportional when elastic body diaphragm 5 is under pressure.Adopt stickup, sputter or semiconductor technology, make 4 sensitive resistances 7 at the back side of elastic body diaphragm 5 and form Wheatstone bridge, the output line of sensitive resistance 7 is linked lead plate 4, lead plate 4 be used to be welded compensating resistance and play the lead-in wire transitional function, and then be connected to circuit board 2, perhaps the output line with sensitive resistance 7 is directly connected to circuit board 2, and the afterbody of pedestal 1 can be installed electric connector.
Referring to Fig. 1 and Fig. 2, hydrodynamic pressure P only by one of elastic body diaphragm 5 front end less than the shallow chamber 6 of the dark wide-angle of 6mm, act directly on the elastic body diaphragm 5, make elastic body diaphragm 5 produce distortion, four sensitive resistances 7 are manufactured with the composition Wheatstone bridge at the back side of elastic body diaphragm 5,5 distortion of elastic body diaphragm change sensitive resistance 7 resistances, Wheatstone bridge output and the proportional electric signal of pressure, in case of necessity, can utilize electronic circuit that the signal of electric bridge output is amplified, is transformed into the output of standard electric signal.
Claims (3)
1, a kind of tonometric sensor of high viscosity fluid that is used for, comprise pedestal (1), elastic body diaphragm (5) and sensitive resistance (7), it is characterized in that: described elastic body diaphragm (5) is arranged at described pedestal (1) and upward contacts foremost with measuring media, and described sensitive resistance (7) is arranged at the inboard of described elastic body diaphragm (5).
2, the tonometric sensor of high viscosity fluid that is used for according to claim 1, it is characterized in that: the side that described elastic body diaphragm (5) contacts with measuring media is provided with the shallow chamber of wide-angle (6).
3, the tonometric sensor of high viscosity fluid that is used for according to claim 1 and 2, it is characterized in that: described elastic body diaphragm (5) is welded on the front end of the pressure connecting thread (3) of described pedestal (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200655475U CN201141791Y (en) | 2007-12-25 | 2007-12-25 | Sensor for pressure measurement of high viscosity fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200655475U CN201141791Y (en) | 2007-12-25 | 2007-12-25 | Sensor for pressure measurement of high viscosity fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201141791Y true CN201141791Y (en) | 2008-10-29 |
Family
ID=40069502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200655475U Expired - Fee Related CN201141791Y (en) | 2007-12-25 | 2007-12-25 | Sensor for pressure measurement of high viscosity fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201141791Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114282A (en) * | 2009-12-31 | 2011-07-06 | 北京谊安医疗系统股份有限公司 | Mechanism for detecting blockage of syringe |
| CN102667436A (en) * | 2009-11-25 | 2012-09-12 | 基斯特勒控股公司 | Pressure sensor for low-viscosity media |
-
2007
- 2007-12-25 CN CNU2007200655475U patent/CN201141791Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667436A (en) * | 2009-11-25 | 2012-09-12 | 基斯特勒控股公司 | Pressure sensor for low-viscosity media |
| CN102667436B (en) * | 2009-11-25 | 2016-01-20 | 基斯特勒控股公司 | For the pressure transducer of low-viscosity media |
| CN102114282A (en) * | 2009-12-31 | 2011-07-06 | 北京谊安医疗系统股份有限公司 | Mechanism for detecting blockage of syringe |
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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: 20081029 Termination date: 20121225 |