CN204007981U - A kind of for measuring the resistance strain type sensor of polymerization pressure - Google Patents
A kind of for measuring the resistance strain type sensor of polymerization pressure Download PDFInfo
- Publication number
- CN204007981U CN204007981U CN201420376595.6U CN201420376595U CN204007981U CN 204007981 U CN204007981 U CN 204007981U CN 201420376595 U CN201420376595 U CN 201420376595U CN 204007981 U CN204007981 U CN 204007981U
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- strain
- measuring
- flexible member
- type sensor
- polymerization pressure
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- Measuring Fluid Pressure (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model discloses a kind ofly for measuring the resistance strain type sensor of polymerization pressure, comprise cylindrical shell, be welded on barrel front end flexible member, be threaded in cylinder back-end end socket, be attached to the strain ga(u)ge of described flexible member inner side and be connected to the secondary instrument on strain ga(u)ge by wire; Described cylinder body outer wall is provided with external thread and sealing gasket.The utlity model has applied widely, be convenient to remove and stick to the reactive material on flexible member surface and the advantage such as to reuse, can guarantee degree of accuracy in the situation that the physical property of object to be measured and temperature change simultaneously.
Description
Technical field
The utility model relates to a kind of pressure transducer, relates in particular to a kind of for measuring the resistance strain type sensor of polymerization pressure.
Background technology
Hydraulic pressure in engineering (as oil pressure, hydraulic pressure) is measured common working pressure sensor, resistance strain type pressure sensor has to be convenient to be connected with secondary instrument, feature that can continuous recording pressure change procedure, thereby be used widely in modern test technology.In the structure of general resistance strain type pressure sensor, there is the inner chamber being formed by cylindrical shell, a flexible member being communicated with reaction vessel and be attached to the strainometer outside flexible member.If the sensor in use physical property of testing liquid is constant, can use for a long time.But in actual applications, also there is other pressure measurement demand, i.e. the pressure detection of polymkeric substance in chemical reaction process, at this moment liquid chemical raw material (component) can polymerization reaction take place once mixing just, produce reaction heat and reflection pressure, as foam filled dose etc. simultaneously.In this case, the physical property of liquid in course of reaction will change, certain situation can gradually become solid-state from liquid state, if use traditional pressure transducer detected pressures, the chemical substance that is filled to sensor inner chamber can not be good in solidification process gradually transmission of pressure, after solidifying, be also difficult to remove, the use that causes sensor can only be disposable, and measuring accuracy is also difficult to be guaranteed.Therefore, for this type of pressure survey, need to propose a kind of new design proposal to the structure of pressure transducer, when guaranteeing degree of accuracy, be convenient to clean and Reusability.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of for measuring the resistance strain type sensor of polymerization pressure, have applied widely, be convenient to remove and stick to the reactive material on flexible member surface and the advantage such as to reuse, can guarantee degree of accuracy in the situation that the physical property of object to be measured and temperature change simultaneously.
To achieve these goals, technical solution adopted in the utility model is: a kind of for measuring the resistance strain type sensor of polymerization pressure, comprise cylindrical shell, be welded on barrel front end flexible member, be threaded in cylinder back-end end socket, be attached to the strain ga(u)ge of described flexible member inner side and be connected to the secondary instrument on strain ga(u)ge by wire; Described cylinder body outer wall is provided with external thread and sealing gasket.
As a kind of optimal technical scheme of the present utility model, in the middle of described end socket, offer for the via hole through described wire.
As a kind of optimal technical scheme of the present utility model, described sealing gasket is rubber seal or metal o-ring.
As a kind of optimal technical scheme of the present utility model, described strain ga(u)ge adopts normal temperature resistance strainometer or middle temperature strain ga(u)ge or high temperature resistance strainometer.
Adopt the beneficial effect that technique scheme produces to be: the utility model not only can be for measuring the constant fluid pressure of physical property, and can be used in because chemical reaction causes the piezometry in the situation that physical property changes, applied widely; Determinand is contact resilient element outer surface only, and exposed outside flexible member, is convenient to remove the reactant that sticks to flexible member surface after mensuration, can reuse; The material of various physical property all can directly pass to flexible member by pressure, can guarantee to measure the degree of accuracy of pressure in the situation that the physical property of object to be measured and temperature change.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is sectional structure chart of the present utility model.
In figure: 1, cylindrical shell 2, flexible member 3, end socket 4, strain ga(u)ge 5, external thread 6, sealing gasket 7, wire 8, secondary instrument 9, via hole.
Embodiment
Referring to accompanying drawing, the structure of an embodiment of the utility model comprises cylindrical shell 1, be welded on the flexible member 2 of cylindrical shell 1 front end, be threaded in cylindrical shell 1 rear end end socket 3, be attached to the strain ga(u)ge 4 of described flexible member 2 inner sides and be connected to the secondary instrument 8 on strain ga(u)ge 4 by wire 7; Described cylindrical shell 1 outer wall is provided with external thread 5 and sealing gasket 6.In the middle of described end socket 3, offer for the via hole 9 through described wire 7.Described sealing gasket 6 adopts rubber seal or metal o-ring.Described strain ga(u)ge 4 can be according to the temperature choice for use normal temperature resistance strainometer of chemical reaction or middle temperature strain ga(u)ge or high temperature resistance strainometer.
Principle of work of the present utility model is: the utility model is tightly connected by external thread 5 and the connector of reaction vessel, flexible member 2 produces elastic deformation because the pressure in reaction vessel changes, and then the resistance value that causes strain ga(u)ge 4 changes, through analog quantity, conversion can be presented at the real-time pressure value of reactant in reaction vessel on secondary instrument 8.
The utility model is by changing the structural design of sensor, avoid object to be measured to enter sensor inner chamber, when reactant physical property changes, also pressure condition can be delivered to flexible member 2 truly, and can, by selecting the type of strain ga(u)ge 4 to carry out effective compensation to the impact of temperature of reaction, guarantee degree of accuracy; Meanwhile, flexible member 2 is outer surface contact measured object only, is convenient to cleaning after mensuration, and realization is reused.
Foregoing description only proposes as the enforceable technical scheme of the utility model, not as the Single restriction condition to its technical scheme itself.
Claims (4)
1. for measuring a resistance strain type sensor for polymerization pressure, it is characterized in that: comprise cylindrical shell (1), be welded on cylindrical shell (1) front end flexible member (2), be threaded in cylindrical shell (1) rear end end socket (3), be attached to the strain ga(u)ge (4) of described flexible member (2) inner side and be connected to the secondary instrument (8) on strain ga(u)ge (4) by wire (7); Described cylindrical shell (1) outer wall is provided with external thread (5) and sealing gasket (6).
2. according to claim 1 for measuring the resistance strain type sensor of polymerization pressure, it is characterized in that: in the middle of described end socket (3), offer for the via hole (9) through described wire (7).
3. according to claim 2 for measuring the resistance strain type sensor of polymerization pressure, it is characterized in that: described sealing gasket (6) is rubber seal or metal o-ring.
According to described in claim 1 or 2 or 3 for measuring the resistance strain type sensor of polymerization pressure, it is characterized in that: described strain ga(u)ge (4) adopts normal temperature resistance strainometer or middle temperature strain ga(u)ge or high temperature resistance strainometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420376595.6U CN204007981U (en) | 2014-07-09 | 2014-07-09 | A kind of for measuring the resistance strain type sensor of polymerization pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420376595.6U CN204007981U (en) | 2014-07-09 | 2014-07-09 | A kind of for measuring the resistance strain type sensor of polymerization pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204007981U true CN204007981U (en) | 2014-12-10 |
Family
ID=52047962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420376595.6U Expired - Fee Related CN204007981U (en) | 2014-07-09 | 2014-07-09 | A kind of for measuring the resistance strain type sensor of polymerization pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204007981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185635A (en) * | 2015-08-19 | 2015-12-23 | 东莞市凯华电子有限公司 | Keyboard switch |
-
2014
- 2014-07-09 CN CN201420376595.6U patent/CN204007981U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185635A (en) * | 2015-08-19 | 2015-12-23 | 东莞市凯华电子有限公司 | Keyboard switch |
| CN105185635B (en) * | 2015-08-19 | 2017-11-14 | 东莞市凯华电子有限公司 | A kind of keyboard switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |