CN2190783Y - Dynamic pressure sensor - Google Patents
Dynamic pressure sensor Download PDFInfo
- Publication number
- CN2190783Y CN2190783Y CN 94240074 CN94240074U CN2190783Y CN 2190783 Y CN2190783 Y CN 2190783Y CN 94240074 CN94240074 CN 94240074 CN 94240074 U CN94240074 U CN 94240074U CN 2190783 Y CN2190783 Y CN 2190783Y
- Authority
- CN
- China
- Prior art keywords
- dynamic pressure
- pressure transducer
- electrode
- utility
- model
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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.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a dynamic pressure sensor used for the detection of the oil pressure of various engines, which belongs to the technical field of pressure sensors. The utility model is formed by that detecting elements, which are composed of even blocks of high sensitivity piezoelectric thin films, are arranged in two hollow semiellipsoid cavities, which is made of insulating material, two electrodes are arranged on both sides of the piezoelectric thin films, one end of the two semiellipsoids is sheathed on a metal shaft, and the other end is provided with a fastening device. When used, the utility model is fastened to the outer wall of an oil pipe, auxiliary equipment is unnecessary, and the disassembly of original equipment is unnecessary, which brings convenience to the detection of the oil pressure of the engines.
Description
The utility model relates to a kind of dynamic pressure transducer that various engine oil pressures detect that is used for, and belongs to the pressure transducer technical field.
The engine oil pressure detecting device of widespread use at present, during detection, needing increases servicing unit, and sensor is communicated with oil pipe, and this gives to install and use and has caused great inconvenience.
For overcoming the deficiency of above-mentioned technology, the utility model provides a kind of new pressure transducer, and promptly dynamic pressure transducer during detection, needs only sensor card on oil-pipe external wall, it is connected with detecting device, easily the parameters such as oil pressure of detection of engine.
The core devices of dynamic pressure transducer is the detection unit that the high sensitivity piezoelectric membrane is made, and a sensor is surveyed unit by two at least and formed.According to the requirement of different detection sensitivities, can make by 2,4,6 ... survey the sensor that unit forms Deng even number.In these sides of surveying unit conductive rubber is installed, by rubber conductive rubber and piezoelectric membrane is fixed into one, these conductive rubbers are connected in parallel as an electrode of sensor; In these another surveys of surveying unit conductive metal film is installed, these conductive metal films are connected in parallel as another electrode of sensor.This even number is surveyed unit on average be installed in two hollow semiellipsoid inboards of being made by insulating material, an end of two semiellipsoids is sleeved on the metal shaft, and this metal shaft can connect an electrode surveying unit; The other end of two semiellipticals can be opened or close up, and by a fastener two semiellipticals is closed up together when closing up, and can be fastened on the engine oil tube outer wall during use.
Fig. 1 is the sectional view of dynamic pressure transducer, and Fig. 2 is a structural representation of surveying unit.Wherein: 1 fastener, 2 pressure films, 3 sensor outer housings, 4 conductive rubbers lead-in wire, 5a conductive rubber electrode, 5b metal electrode, 6 conductive rubbers, 7 rubber, 8 metal shaft.
Embodiment
Dynamic pressure transducer as shown in Figure 1, by fastener 1, insulation crust 3, piezoelectric membrane 2, conductive rubber 6, rubber 7, lead 4, metal shaft 8, electrode 5 is formed, wherein 5a is a conductive rubber electrode, 5b is the copper film electrode.Two half insulation crusts 3 are sleeved on the metal shaft 8, simultaneously metal shaft 8 conductive rubber 6 by go between 4 and electrode 5a be linked together.The other end of shell 3 is fasteners 1, by fastener 1 sensor is fastened on the engine oil tube outer wall during use.Conductive rubber 6 is fixed together by rubber 7 and piezoelectric membrane 2, at the opposite side of piezoelectric membrane 2 copper film electrode 5b is installed.Sensor is fastened on the engine oil tube outer wall two electrode 5a of sensor and 5b joint detection device.When engine operation, oil plant flows in the oil pipe, makes sensor produce piezoelectric signal, and detecting device can detect the numerical value of oil pressure.
According to the requirement of different detection sensitivities, can make by the even number of varying number and survey the serial dynamic pressure transducer that unit forms.This class pressure transducer can satisfy the various parameter index requirements of pressure transducer that are suitable at present, need not increase servicing unit in use, does not dismantle original device, brings great convenience for the detection of engine oil pressure.
Claims (4)
1, dynamic pressure transducer is characterized in that, the detection unit that it is core devices by even number with high sensitivity piezoelectric membrane is installed in and forms on two hollow semiellipsoid inwalls making with insulating material.
2, dynamic pressure transducer according to claim 1, it is characterized in that, an electrode surveying unit is mounted in that the even number conductive rubber of piezoelectric membrane one side is formed in parallel, and another electrode of surveying unit is mounted in that the even number conductive metal film of piezoelectric membrane opposite side is formed in parallel.
3, dynamic pressure transducer according to claim 1 is characterized in that, two hollow semiellipsoid one ends are sleeved on the metal shaft, and the other end is installed the fastener that can make two semiellipsoids open or close up.
According to claim 1 or claim 2 or the described dynamic pressure transducer of claim 3, it is characterized in that 4, the metal shaft of two semiellipsoids of suit connects an electrode of sensor simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94240074 CN2190783Y (en) | 1994-03-31 | 1994-03-31 | Dynamic pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94240074 CN2190783Y (en) | 1994-03-31 | 1994-03-31 | Dynamic pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2190783Y true CN2190783Y (en) | 1995-03-01 |
Family
ID=33847133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94240074 Expired - Fee Related CN2190783Y (en) | 1994-03-31 | 1994-03-31 | Dynamic pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2190783Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073211C (en) * | 1995-07-03 | 2001-10-17 | 罗伯特-博希股份公司 | Pressure sleeve with thread ring |
| CN106545749A (en) * | 2016-12-20 | 2017-03-29 | 上海至纯洁净***科技股份有限公司 | A kind of liquid source supply device |
-
1994
- 1994-03-31 CN CN 94240074 patent/CN2190783Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073211C (en) * | 1995-07-03 | 2001-10-17 | 罗伯特-博希股份公司 | Pressure sleeve with thread ring |
| CN106545749A (en) * | 2016-12-20 | 2017-03-29 | 上海至纯洁净***科技股份有限公司 | A kind of liquid source supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |