CN203178026U - Fiber grating hydraulic sensor - Google Patents
Fiber grating hydraulic sensor Download PDFInfo
- Publication number
- CN203178026U CN203178026U CN 201320109786 CN201320109786U CN203178026U CN 203178026 U CN203178026 U CN 203178026U CN 201320109786 CN201320109786 CN 201320109786 CN 201320109786 U CN201320109786 U CN 201320109786U CN 203178026 U CN203178026 U CN 203178026U
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- fiber grating
- hydraulic pressure
- pressure transducer
- free end
- pressure
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Abstract
The utility model relates to a fiber grating hydraulic sensor, comprising a housing; a pressure transmission hollow capsule placed outside the housing and comprising a capsule body and fillers placed in the capsule body, wherein the capsule body is provided with a capsule body opening; a pressure transmission apparatus fixed in the housing and comprising an open end and a movable free end, the open end being in seal connection with the capsule body opening; and a fiber grating strain apparatus with one end connected with the movable free end of the pressure transmission apparatus and the other end fixed in the housing. Compared with a traditional electric hydraulic sensor, the fiber grating hydraulic sensor has the advantages of good anti-electromagnetic interference performance, good electrical isolation performance, wide suitable scope and good chemical performance stability, is safe and reliable and can realize long distance monitoring.
Description
Technical field
The utility model relates to a kind of hydraulic sensing dress device, relates in particular to a kind of fiber grating hydraulic pressure transducer.
Background technology
At present in tunnel, dykes and dams, storage tank, pipeline, colliery, oil field and pore water pressure force measurement, the traditional electric class osmometer method of basic employing, this mode mainly is that the detected pressures sensitive element is with being changed by measuring pressure and the distortion of corresponding generation, the variation of relevant electric weight such as voltage, resistance or electric capacity can be caused after the pressure-sensing device distortion, just corresponding force value can be obtained by detecting relevant electric signal.
This electric class osmometer measuring accuracy is low, and volume is big, and water resistance is poor, and the life-span is short, and discharge is subject to electromagnetic interference (EMI) easily, and these have limited electric class osmometer in the widespread use in correlation engineering field.Such as at inflammable and explosive petrochemical industries such as storage tank, traditional electric class osmometer in use may produce electric discharge phenomena, so that causes an explosion accident, and there is great potential safety hazard in this.In the measurement of dykes and dams and pipeline, because testing environment is changeable and abominable, and electric class osmometer device exists electric signal and electron device, is easy to be subjected to the influence of external environment, and especially thunder and lightning is very big to the interference effect of electric signal, and this has had a strong impact on measuring accuracy.
Summary of the invention
The utility model patent has proposed a kind of fiber grating hydraulic pressure transducer at above-mentioned deficiency of the prior art, adopts this hydraulic pressure transducer tracer liquid pressure, has advantages such as anti-electromagnetic interference (EMI), electrical insulating property be good.
For solving above technical matters, the utility model provides following technical scheme.
Fiber grating hydraulic pressure transducer of the present utility model, it comprises shell; Pressure transmits hollow capsule, places described housing exterior, comprises utricule and places the interior filling material of described utricule, offers bladder aperture on the described utricule; The pressure transmission device is fixed in described enclosure, comprises openend and removable free end, and described openend and described bladder aperture are tightly connected; The fiber grating strain device, an end is connected with the removable free end of described pressure transmission device, and the other end is fixed in described enclosure.
Preferably, described removable free end is connected by the rigidity connecting rod with the fiber grating strain device, and described rigidity connecting rod is vertical with the deformation direction of described light grating strain device with described removable free-ended moving direction respectively.
Preferably, described sensor also comprises the static pressure release aperture.
Preferably, described pressure transmits hollow capsule and adopts the elasticity macromolecular material to make.
Preferably, described pressure transmits being shaped as sphere, ellipse or being with the ripple sphere of hollow capsule.
Preferably, described filling material is gas or liquid.
Preferably, described pressure transmission device is that piston-type pressure increases and decreases quick device or bourdon tube.
Hydraulic pressure transducer of the present utility model is compared with traditional electric class hydraulic pressure transducer, have following advantage: (1) anti-electromagnetic interference performance is good: the frequency ratio light wave of general electromagnetic radiation is much lower, so the light signal that transmits in optical fiber is not subjected to the influence of electromagnetic interference (EMI); (2) electrical insulation capability is good, and is applied widely, safe and reliable: itself is made of optical fiber dielectric, and need not power drives, therefore is suitable for using in inflammable and explosive oil, gas, Chemical Manufacture; (3) corrosion-resistant, stable chemical performance is good: have high chemical stability owing to make the material quartz of optical fiber, so Fibre Optical Sensor is suitable for using in than rugged surroundings; (4) but remote monitoring:: fiber transmission attenuation is little, can realize long-distance remote control monitoring.
[description of drawings]
Fig. 1 is the synoptic diagram of first kind of embodiment of the utility model.
[embodiment]
Below in conjunction with the drawings and the specific embodiments the technical solution of the utility model is explained in detail.
As shown in Figure 1, be a kind of embodiment of fiber grating hydraulic pressure transducer of the present utility model, it comprises shell 1, and pressure transmits hollow capsule 2, and it is quick 3 that piston-type pressure increases and decreases, fiber grating strain device 4, rigidity connecting rod 5 and static pressure release aperture 6.
Pressure transmits the filling material 22 that hollow capsule 2 comprises utricule 21 and places utricule inside, offers bladder aperture (not indicating among the figure) at utricule 21.
Utricule 21 can be also can be the hollow capsule that metal thin-wall is made with the hollow capsule that the elasticity macromolecular material is made, specifically do not limit, because the elasticity macromolecular material has excellent recovery capability, the hollow capsule made from the elasticity macromolecular material preferably, described elasticity macromolecular material can be selected synthetic rubber such as nitrile rubber, silicon rubber, fluororubber, neoprene, styrene-butadiene rubber or natural rubber etc. for use; The all or part of outside that places housing 1 of utricule is used for the extraneous fluid pressure of impression; Utricule 21 can be designed to shapes such as sphere, ellipse or band ripple sphere according to concrete measurement environment difference.
Inside stuffing 22 can be gas or liquid, does not specifically limit.
Piston-type pressure increases and decreases quick 3 and comprises openend (not indicating among the figure) and removable free end 31, openend and bladder aperture are tightly connected, utricule 21 is when being subjected to ambient pressure, and inside stuffing flows to removable free end 31 by openend, and removable free end 31 is applied acting force, make it produce displacement, piston-type pressure increases and decreases quick 3 can be replaced with bourdon tube, can realize that also the pressure that utricule is born changes the effect of mechanical shift, is referred to as the pressure transmission device with both.
Fiber grating strain device 4 is provided with the optical fiber of grating for it, the one end is connected with removable free end 31 by rigidity connecting rod 5, preferred as shown in Figure 1, rigidity connecting rod 5 is respectively perpendicular to the deformation direction of moving direction and the described light grating strain device of removable free end 31, the stress performance that had so both met optical fiber, can make the lower end of rigidity connecting rod 5 play the effect of fixed fiber again, reduce the use of equal strength overarm arm.
The air hole of static pressure release aperture 6 for offering at shell 1, resistance pressure and outside pressure when removable free end 31 is moved are consistent, and overcome 31 pairs of dynamic pressures of removable free end and have the slow problem of response.
The utility model principle of work: extraneous liquid extruding utricule 21 outside surfaces, the filler 22 of utricule 21 inside is under the effect of extruding force, enter piston-type pressure through bladder aperture and openend and increase and decrease quick device 3, under filling material 22 pressure effects, the removable free end 31 that piston-type pressure increases and decreases in the quick device 3 produces displacement, the acting force of this its generation of displacement is applied on the fiber grating strain device 4 by rigidity connecting rod 5, making it produce strain changes, thereby driving grating wavelength changes, perceived wavelength variations signal is delivered to the fiber grating signal (FBG) demodulator of far-end, through the conversion of photosignal, finally realize the conversion of consolidation pressure.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is only limited to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.。
Claims (7)
1. fiber grating hydraulic pressure transducer, it is characterized in that: it comprises shell; Pressure transmits hollow capsule, places described housing exterior, comprises utricule and places the interior filling material of described utricule, offers bladder aperture on the described utricule; The pressure transmission device is fixed in described enclosure, comprises openend and removable free end, and described openend and described bladder aperture are tightly connected; The fiber grating strain device, an end is connected with the removable free end of described pressure transmission device, and the other end is fixed in described enclosure.
2. fiber grating hydraulic pressure transducer as claimed in claim 1, it is characterized in that: described removable free end is connected by the rigidity connecting rod with the fiber grating strain device, and described rigidity connecting rod is vertical with the deformation direction of described light grating strain device with described removable free-ended moving direction respectively.
3. fiber grating hydraulic pressure transducer as claimed in claim 1, it is characterized in that: described sensor also comprises the static pressure release aperture.
4. fiber grating hydraulic pressure transducer as claimed in claim 1 is characterized in that: described pressure transmits hollow capsule and adopts the elasticity macromolecular material to make.
5. fiber grating hydraulic pressure transducer as claimed in claim 1 is characterized in that: what described pressure transmitted hollow capsule is shaped as sphere, ellipse or band ripple sphere.
6. fiber grating hydraulic pressure transducer as claimed in claim 1, it is characterized in that: described filling material is gas or liquid.
7. fiber grating hydraulic pressure transducer as claimed in claim 1, it is characterized in that: described pressure transmission device is that piston-type pressure increases and decreases quick device or bourdon tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320109786 CN203178026U (en) | 2013-03-12 | 2013-03-12 | Fiber grating hydraulic sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320109786 CN203178026U (en) | 2013-03-12 | 2013-03-12 | Fiber grating hydraulic sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203178026U true CN203178026U (en) | 2013-09-04 |
Family
ID=49074708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320109786 Expired - Fee Related CN203178026U (en) | 2013-03-12 | 2013-03-12 | Fiber grating hydraulic sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203178026U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048793A (en) * | 2013-03-12 | 2014-09-17 | 上海启鹏工程材料科技有限公司 | Fiber grating hydraulic sensor |
| CN104279986A (en) * | 2014-09-18 | 2015-01-14 | 昆明理工大学 | Piston type hydrargyrum optical fiber Bragg grating tilt angle sensor and using method thereof |
-
2013
- 2013-03-12 CN CN 201320109786 patent/CN203178026U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048793A (en) * | 2013-03-12 | 2014-09-17 | 上海启鹏工程材料科技有限公司 | Fiber grating hydraulic sensor |
| CN104279986A (en) * | 2014-09-18 | 2015-01-14 | 昆明理工大学 | Piston type hydrargyrum optical fiber Bragg grating tilt angle sensor and using method thereof |
| CN104279986B (en) * | 2014-09-18 | 2017-04-12 | 昆明理工大学 | Piston type hydrargyrum optical fiber Bragg grating tilt angle sensor and using method thereof |
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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: 20130904 Termination date: 20210312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |