CN201155997Y - Optical fiber grating osmometer - Google Patents
Optical fiber grating osmometer Download PDFInfo
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- CN201155997Y CN201155997Y CNU2008200791864U CN200820079186U CN201155997Y CN 201155997 Y CN201155997 Y CN 201155997Y CN U2008200791864 U CNU2008200791864 U CN U2008200791864U CN 200820079186 U CN200820079186 U CN 200820079186U CN 201155997 Y CN201155997 Y CN 201155997Y
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- grating
- fiber
- pressure
- optical fiber
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Abstract
The utility model provides a fiber grating osmometer, which relates to the engineering measuring tools. The fiber grating osmometer comprises an outer tube, a water permeable seat, a rear plug and a grating protective tube; wherein, the water permeable seat and the rear plug are respectively arranged at the two ends of the outer tube; the grating protective tube is arranged in the outer tube and arranged on the rear plug in an insertion way; the inner part of the water permeable is hollow and the end part is provided with a water permeable stone; the rear plug is provided with a through hole in which an armored joint is arranged; a cavity containing a fiber and a pressure grating is inserted in the grating protective tube; the insertion end of the cavity is provided with a membrane seat and plugs the grating protective tube; the inner part of the membrane seat is hollow and the end part is provided with a membrane; the fiber is connected with the pressure grating; one end of the fiber is inserted into the membrane and the other end is inserted into the armored joint. The fiber grating osmometer has the advantages of good lightening stroke protection performance, strong anti-electromagnetic interference performance, long measurement distance, high reliability, large measurement range and high measurement precision.
Description
Technical field
The utility model relates to the engineering measurer, the fiber bragg grating osmometer of particularly a kind of measuring fluid pressure, pore water pressure or liquid level.
Background technology
At present, the measurer that is used for measuring fluid pressure, pore water pressure or liquid level is an electronic sensor, electronic sensor transmits pressure by inner string wire, because electronic sensor self exists anti-thunderbolt poor performance, anti-electromagnetic interference performance is poor, measuring distance is nearer defective, so caused poor reliability, measurement range is little, measuring accuracy is not high problem.
Summary of the invention
The purpose of this utility model is the defective at above-mentioned prior art, provides good, the anti-electromagnetic interference performance of a kind of anti-thunderbolt performance strong, measuring distance fiber bragg grating osmometer far away, has good reliability, measurement range is big, measuring accuracy is high advantage.
The technical scheme taked of the utility model is to achieve these goals: a kind of fiber bragg grating osmometer, comprise urceolus, respectively be located at the urceolus two ends permeable seat and after fill in, be located in the urceolus and beyond the Great Wall grating protection tube after being plugged in; Wherein, permeable seat inner hollow, end are provided with permeable stone, and the back plug is provided with and is provided with the armouring joint in through hole, the through hole, is inserted with the cavity that contains optical fiber and pressure grating in the grating protection tube, the inserted terminal of cavity is provided with the diaphragm seat and clogs the grating protection tube, and diaphragm seat inner hollow, end are provided with diaphragm; Optical fiber is connected with the pressure grating, and an end of optical fiber stretches in the diaphragm, the other end stretches in the armouring joint.Because grating itself has strong, the measuring distance advantage far away of good, the anti-electromagnetic interference performance of anti-thunderbolt performance, therefore the utlity model has good reliability, advantage that measurement range is big.
In order to reduce temperature to tonometric influence, be provided with temperature compensation rod between described diaphragm and the pressure grating, be provided with the temperature compensation grating in the temperature compensation rod, the temperature compensation grating links to each other with optical fiber.Therefore improved measuring accuracy.
The beneficial effects of the utility model are: compared to existing technology, the utlity model has that good, the anti-electromagnetic interference performance of anti-thunderbolt performance is strong, measuring distance is far away, good reliability, measurement range reach the high advantage of measuring accuracy greatly.
Description of drawings
Fig. 1 is the utility model master cut-open view;
Fig. 2 is the vertical view that the utility model is cut urceolus open.
Among the figure: 1 permeable stone, 2 permeable seats, 3 rubber rings, 4 urceolus, 5 diaphragms, 6 temperature compensation rods, 7 bond pads, 8 cavitys, 9 grating protection tubes, 10 back plugs, 11 armouring joints, 12FC-PC joint, 13 pressure gratings, 14 temperature compensation gratings, 15 optical fiber, 16 diaphragm seats.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
A kind of fiber bragg grating osmometer shown in Fig. 1-2, comprise urceolus 4, respectively be located at urceolus 4 two ends permeable seat 2 and back plug 10, be located in the urceolus 4 and be plugged in grating protection tube 9 on the back plug 10.Wherein, permeable seat 2 inner hollow, end are provided with permeable stone 1.Back plug 10 is provided with and is provided with armouring joint 11 in through hole, the through hole, armouring joint 11 overcoat FC-PC joints 12.Be inserted with cavity 8 in the grating protection tube 9; be provided with connected bond pad 7 in the cavity 8; be provided with optical fiber 15 and pressure grating 13 between the bond pad 7, pressure grating 13 is connected with optical fiber 15, and an end of optical fiber 15 stretches in the diaphragm 5, the other end stretches in the armouring joint 11.The inserted terminal of cavity 8 clogs grating protection tube 9, and the top is provided with diaphragm seat 16.Diaphragm seat 16 inner hollow, end are provided with diaphragm 5.
In order to reduce temperature to tonometric influence, be provided with temperature compensation rod 6 between described diaphragm 5 and the pressure grating 13, be provided with temperature compensation grating 14 in the temperature compensation rod 6, optical fiber 15 links to each other with temperature compensation grating 14.Its compensation principle is: because there is Temperature Influence in osmometer itself, even under the situation of constant voltage, because the change of temperature also can produce wavelength change by build-up of pressure grating 13, in order to eliminate Temperature Influence, we can measure the temperature coefficient of osmometer, in osmometer, install one then and be specifically designed to the temperature compensation grating 14 of measuring temperature, 14 liang of gratings of pressure grating 13 and temperature compensation grating can be cascaded, the pressure information of the temperature information of temperature compensation grating 14 and pressure grating 13 just can import in the fiber grating analyser by same telecommunication optical fiber 15 like this, measures the actual pressure size that can calculate liquid accurately by to temperature and pressure the time.By choosing the temperature compensation bar 6 of appropriate length and thermal expansivity, can effectively reduce the influence of temperature in addition to sensor measurement.
Principle of work of the present utility model: liquid enters in the cavity 8 by the filtration of permeable stone 1, make extraneous fluid pressure directly act on diaphragm 5, diaphragm 5 caves under the effect of extraneous fluid pressure to the inside, this depression is connected pressure inside grating 13 and perceives, pressure grating 13 is sent to the form of Wavelength-encoding the amount of recess that is perceived the fiber grating analyser of far-end by coupled optical fiber 15, because the difference of extraneous fluid pressure can cause diaphragm 5 to produce different amount of recess, this different amount of recess can produce different optical wavelength after by the grating perception, and the fiber grating analyser just can be learnt the pressure size of sensor position liquid by the light of understanding the different wave length amount.
Therefore the utlity model has that good, the anti-electromagnetic interference performance of anti-thunderbolt performance is strong, measuring distance is far away, good reliability, measurement range reach the high advantage of measuring accuracy greatly.
Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.
Claims (2)
1. fiber bragg grating osmometer is characterized in that: comprise urceolus, respectively be located at the urceolus two ends permeable seat and after fill in, be located in the urceolus and beyond the Great Wall grating protection tube after being plugged in; Wherein, permeable seat inner hollow, end are provided with permeable stone, and the back plug is provided with and is provided with the armouring joint in through hole, the through hole, is inserted with the cavity that contains optical fiber and pressure grating in the grating protection tube, the inserted terminal of cavity is provided with the diaphragm seat and clogs the grating protection tube, and diaphragm seat inner hollow, end are provided with diaphragm; Optical fiber is connected with the pressure grating, and an end of optical fiber stretches in the diaphragm, the other end stretches in the armouring joint.
2. fiber bragg grating osmometer according to claim 1 is characterized in that: be provided with temperature compensation rod between described diaphragm and the pressure grating, be provided with the temperature compensation grating in the temperature compensation rod, the temperature compensation grating links to each other with optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200791864U CN201155997Y (en) | 2008-02-25 | 2008-02-25 | Optical fiber grating osmometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200791864U CN201155997Y (en) | 2008-02-25 | 2008-02-25 | Optical fiber grating osmometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155997Y true CN201155997Y (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200791864U Expired - Lifetime CN201155997Y (en) | 2008-02-25 | 2008-02-25 | Optical fiber grating osmometer |
Country Status (1)
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| CN (1) | CN201155997Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603873B (en) * | 2009-07-14 | 2011-02-02 | 山东大学 | Pull-rod fiber bragg grating osmometer |
| CN102768094A (en) * | 2012-08-08 | 2012-11-07 | 上海森首光电科技有限公司 | FBG (Fiber Bragg Grating) pressure sensor |
| CN102865900A (en) * | 2012-09-14 | 2013-01-09 | 武汉理工大学 | FBG (Fiber Bragg Grating) liquid level sensor and preparation method thereof |
| CN104198108A (en) * | 2014-09-16 | 2014-12-10 | 杭州珏光物联网科技有限公司 | Fiber grating osmometer |
| CN105051512A (en) * | 2013-01-31 | 2015-11-11 | 镭射点有限公司 | Optical sensor for contactless pressure measurements |
| CN105888651A (en) * | 2016-04-28 | 2016-08-24 | 安徽蓝海之光科技有限公司 | Mining online pressure-measuring device based on optical fiber |
| CN108955769A (en) * | 2018-07-13 | 2018-12-07 | 湖南大学 | A kind of fiber grating soil pressure-osmotic pressure-temperature multi-parameter sensor |
| CN111665182A (en) * | 2020-06-17 | 2020-09-15 | 哈尔滨工业大学 | Inner tube water pressure expansion type fiber grating osmometer |
| CN112461436A (en) * | 2020-12-02 | 2021-03-09 | 南通装配式建筑与智能结构研究院 | Plain type fiber grating osmometer |
| CN113108979A (en) * | 2021-04-02 | 2021-07-13 | 安徽响水涧抽水蓄能有限公司 | Fiber grating osmometer with temperature compensation |
-
2008
- 2008-02-25 CN CNU2008200791864U patent/CN201155997Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603873B (en) * | 2009-07-14 | 2011-02-02 | 山东大学 | Pull-rod fiber bragg grating osmometer |
| CN102768094A (en) * | 2012-08-08 | 2012-11-07 | 上海森首光电科技有限公司 | FBG (Fiber Bragg Grating) pressure sensor |
| CN102768094B (en) * | 2012-08-08 | 2017-11-21 | 上海森首光电科技有限公司 | A kind of fiber bragg grating pressure sensor |
| CN102865900A (en) * | 2012-09-14 | 2013-01-09 | 武汉理工大学 | FBG (Fiber Bragg Grating) liquid level sensor and preparation method thereof |
| CN102865900B (en) * | 2012-09-14 | 2016-06-22 | 武汉理工大学 | Fiber Grating Liquid Depth Sensor and preparation method thereof |
| CN105051512A (en) * | 2013-01-31 | 2015-11-11 | 镭射点有限公司 | Optical sensor for contactless pressure measurements |
| CN104198108A (en) * | 2014-09-16 | 2014-12-10 | 杭州珏光物联网科技有限公司 | Fiber grating osmometer |
| CN105888651A (en) * | 2016-04-28 | 2016-08-24 | 安徽蓝海之光科技有限公司 | Mining online pressure-measuring device based on optical fiber |
| CN108955769A (en) * | 2018-07-13 | 2018-12-07 | 湖南大学 | A kind of fiber grating soil pressure-osmotic pressure-temperature multi-parameter sensor |
| CN111665182A (en) * | 2020-06-17 | 2020-09-15 | 哈尔滨工业大学 | Inner tube water pressure expansion type fiber grating osmometer |
| CN112461436A (en) * | 2020-12-02 | 2021-03-09 | 南通装配式建筑与智能结构研究院 | Plain type fiber grating osmometer |
| CN113108979A (en) * | 2021-04-02 | 2021-07-13 | 安徽响水涧抽水蓄能有限公司 | Fiber grating osmometer with temperature compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Geokon Instruments (Beijing) Co., Ltd. Assignor: Beijing Jikang Technology Co., Ltd. Contract fulfillment period: 2008.11.26 to 2013.12.31 Contract record no.: 2008110000199 Denomination of utility model: Fiber bragg grating osmometer Granted publication date: 20081126 License type: Exclusive license Record date: 20081212 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.26 TO 2013.12.31; CHANGE OF CONTRACT Name of requester: JIKANG INSTRUMENT ( BEIJING ) CO., LTD. Effective date: 20081212 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081126 |
|
| CX01 | Expiry of patent term |