CN88210950U - String hydraulic sensor with piston pressure transmission - Google Patents
String hydraulic sensor with piston pressure transmission Download PDFInfo
- Publication number
- CN88210950U CN88210950U CN 88210950 CN88210950U CN88210950U CN 88210950 U CN88210950 U CN 88210950U CN 88210950 CN88210950 CN 88210950 CN 88210950 U CN88210950 U CN 88210950U CN 88210950 U CN88210950 U CN 88210950U
- Authority
- CN
- China
- Prior art keywords
- pressure transmission
- piston
- liquid
- working film
- pressure
- 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.)
- Withdrawn
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a string hydraulic sensor with piston pressure transmission, belonging to a liquid pressure sensor used in mining machinery. The utility model, mainly comprising a box body, a working film, a liquid-in cover, a rear lid, etc., is characterized in that a pressure transmission piston arranged in the liquid-in cover separates the liquid from the working film, which can effectively eliminate the interference of expansive forces and ensure that the sensor has a high accuracy.
Description
The utility model relates to a kind of liquid pressure sensor, belongs to mining machinery liquid pressure sensor, is the improvement to original hydraulic pressure transducer.
Original hydraulic pressure transducer, liquid directly contact working film, behind the working film pressurized, will be to the deflection of pressure action direction, but simultaneously, because liquid pressure transmits to the four sides, the fluid chamber material around is born expansive force and modification, will disturb the normal deflection of working film, influences the performance of hydraulic pressure transducer.The solution in past mainly is the thickness that increases the fluid chamber material around, to weaken this interference.
The purpose of this utility model is to design a kind of new structure, can eliminate the interference of expansive force effectively, and the concentrated center membrane part that acts on of fluid pressure, improves the performance of hydraulic pressure transducer.
The utility model mainly is made up of box body (1), working film (2), feed liquor lid (3), bottom (12) etc., be characterized in feed liquor lid (3), being installed on a pressure transmission piston (4), make liquid not contact working film (2), one oil-resistant seal ring (5) is housed on pressure transmission piston (4) circumference.
The advantage of this utility model is: simple in structure, can eliminate the interference of expansive force effectively, and guarantee that hydraulic pressure transducer has high precision.
Description of drawings: comprise box body (1), working film (2), feed liquor lid (3), piston (4), O-ring seal (5), the dress post to which the strings of a musical instrument are attached (6), string (7), headplate (8) among the figure, excite magnetic head (9), induction magnetic head (10), socket (11), bottom (12).
Now in conjunction with the accompanying drawings this utility model is described further: this utility model mainly is made up of box body (1), working film (2), feed liquor lid (3), bottom (12) etc.Working film (2) is an integral body with box body (1), be equipped with the dress post to which the strings of a musical instrument are attached (6) on the working film (2), the headplate (8) that string (7) and excitation-detection string vibration frequency are used, a pair of magnetic head is housed on the headplate (8) promptly excites magnetic head (9) and induction magnetic head (10), magnetic head coil is connected with welding lead with socket (11), feed liquor lid (3) and box body (1) are with being threaded, bottom (12) is connected with screw with box body (1), be installed on a pressure transmission piston (4) in the feed liquor lid (3), on pressure transmission piston (4) circumference groove is arranged, O-ring seal (5) is contained in the groove, and scribble railway grease, can positiver sealing.Liquid does not contact working film (2), and simultaneously, O-ring seal (5) is very little because of the friction force that scribbles between railway grease and perisporium, and liquid effects can be delivered on the working film (2) reliably in the pressure of piston (4).The expansive force of the above partially liq of piston (4) is absorbed by feed liquor lid (3), substantially pass less than on the box body (1), guaranteed the pressure effect that working film (2) is transmitted by piston (4) only, and pressure vertically acts on the central authorities of working film (2), make working film (2) produce typical deflection deformation, tensioning string (7), the vibration frequency of string (7) is raise, by connectorized cable corresponding secondary instrument is received sensor socket (11), excitation-detection goes out the vibration frequency of string (7), look into the calibration table, can learn the numerical value of liquid pressure.
Piston (4) can adopt the steel manufacturing.
Claims (3)
1, a kind of mining machinery mainly is made up of box body (1), working film (2), feed liquor lid (3), bonnet (12) etc. with piston-conveying pressure string formula hydraulic pressure transducer, it is characterized in that feed liquor lid (3) is installed on a pressure transmission piston (4).
2,, it is characterized in that an O-ring seal (5) is housed on the pressure transmission piston (4), and scribble railway grease according to claim 1 described hydraulic pressure transducer.
3,, it is characterized in that pressure transmission piston (4) can adopt the steel manufacturing according to claim 1 described hydraulic pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88210950 CN88210950U (en) | 1988-04-06 | 1988-04-06 | String hydraulic sensor with piston pressure transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88210950 CN88210950U (en) | 1988-04-06 | 1988-04-06 | String hydraulic sensor with piston pressure transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88210950U true CN88210950U (en) | 1988-11-30 |
Family
ID=4844406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88210950 Withdrawn CN88210950U (en) | 1988-04-06 | 1988-04-06 | String hydraulic sensor with piston pressure transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88210950U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507067A (en) * | 2011-10-19 | 2012-06-20 | 山东科技大学 | Pre-stressed anchor cable stress state real-time monitoring system based on vibration wire sensing technology |
| CN105651424A (en) * | 2015-12-30 | 2016-06-08 | 哈尔滨工业大学 | Flexible pressure detection device |
-
1988
- 1988-04-06 CN CN 88210950 patent/CN88210950U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507067A (en) * | 2011-10-19 | 2012-06-20 | 山东科技大学 | Pre-stressed anchor cable stress state real-time monitoring system based on vibration wire sensing technology |
| CN102507067B (en) * | 2011-10-19 | 2014-06-11 | 山东科技大学 | Pre-stressed anchor cable stress state real-time monitoring system based on vibration wire sensing technology |
| CN105651424A (en) * | 2015-12-30 | 2016-06-08 | 哈尔滨工业大学 | Flexible pressure detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| C60 | Other related matters | ||
| RR01 | Reinstatement of patent right | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| 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 |