CN201464321U - Float type fiber-grating liquid densitometer - Google Patents
Float type fiber-grating liquid densitometer Download PDFInfo
- Publication number
- CN201464321U CN201464321U CN2009201118081U CN200920111808U CN201464321U CN 201464321 U CN201464321 U CN 201464321U CN 2009201118081 U CN2009201118081 U CN 2009201118081U CN 200920111808 U CN200920111808 U CN 200920111808U CN 201464321 U CN201464321 U CN 201464321U
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- float
- fiber grating
- liquid
- density
- hollow housing
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- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 239000013307 optical fiber Substances 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 2
- 239000002360 explosive Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010205 computational analysis Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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Abstract
The utility model provides a float type fiber-grating liquid densitometer, which comprises a float and a connecting rod that is connected with the float. The liquid densitometer is characterized in that the lower end of the connecting rod is arranged in a closed body and is connected with a horizontal cantilever provided with fiber grating; and the horizontal cantilever is fixed on the closed body. When the density of the liquid is changed due to the affection of the temperature, the grating fiber can precisely detect the deformation of the cantilever by the light spectrum by adopting the principle that the density is in proportion to the buoyancy, and then the density valve of the liquid under a certain temperature can be obtained by the analyzing of an instrument, so as to solve the problem that the traditional densitometer can not meter precisely when the density is changed. Meanwhile, as the grating fiber is not affected by outside sound, light, electricity and other factors, the liquid densitometer has good disturbance-resisting capacity and good insulativity, and is very suitable for metering the density value of the inflammable, explosive and dangerous liquid in a chemical plant, an oil refinery and the like.
Description
Technical field
The utility model provides a kind of float-type liquidensitometer, and particularly a kind of float type fiber grating liquid densimeter belongs to the optical sensing field of measuring technique.
Background technology
Densitometer is a kind of gauging instrument of measuring fluid density or calculating fluid density function and other parameters.The rule that the buoyancy that traditional float type densimeter is subjected in liquid by object is directly proportional with fluid density is measured numerical value and by calculating the fluid density result.Owing to fluid density can change along with the difference of temperature, when the liquid measure temperature under work condition environment often departs from standard temperature, just must be by measuring temperature at that time, the standard density value when being scaled standard temperature by temperature and density conversion table again.Traditional densitometer is a kind of mechanical type static measurement by the human eye interpretation, can't measure accurately in real time when influencing variable density in temperature change, therefore often there is very big error in the numerical value of surveying, this causes great influence to research and production, even cause economic loss, therefore be necessary prior art is improved.
Summary of the invention
Can't carry out accurately measuring in real time to the variable density that causes by temperature for overcoming existing liquidensitometer, thereby cause problems such as error is excessive, the utility model provides a kind of float type fiber grating liquid densimeter, utilize fiber grating to change the characteristics that high sensitivity is arranged for temperature variation and pressure, accurately perception varies with temperature and the fluid density value that changes, thereby accurately measures fluid density.
The utility model is finished by following technical proposal: a kind of float type fiber grating liquid densimeter, comprise float, the connecting rod that links to each other with float is characterized in that the connecting rod lower end places in the obturator, and with its on establish fiber grating horizontal boom link to each other, horizontal boom is fixed on the obturator.
Described obturator comprises the hollow housing that is surrounded by side plate, top board, is socketed on the sealed base of this hollow housing bottom, so that form the obturator of good seal performance, prevents the corrosion that liquid causes the components and parts in it, to improve measuring accuracy.
Described hollow housing top is provided with through hole, the connecting rod lower end that links to each other with float is passed this through hole and is linked to each other with horizontal boom one end, the horizontal boom other end is fixed in the hollow housing by fixture, when moving up and down, drive horizontal boom and produce yield deformation so that connecting rod changes with float unsteady in liquid.
Described fixture is fixed on the hollow housing inwall by attachment screw, and the horizontal boom other end is fixed on this fixture by attachment screw.
Described hollow housing sidepiece is provided with through hole, the input-output optical fiber that links to each other with fiber grating on the horizontal boom passes this through hole and is connected with outside analytical equipment, when producing yield deformation with convenient horizontal boom, spectrum in the fiber grating on it is subjected to displacement, this displacement is delivered to outside analytical equipment by Transmission Fibers and is carried out computational analysis, the final fluid density value that gets.
The utlity model has following advantage and effect: adopt such scheme, when fluid density is subjected to temperature effect and changes, the principle of utilizing density to be directly proportional with buoyancy, make grating fibers pass through the deformation quantity that spectrum accurately detects cantilever, obtain fluid density value under a certain temperature by instrumental analysis then, thereby solved traditional densitometer can't be made accurate measurement when density changes problem. simultaneously because grating fibers is not subjected to extraneous sound, light, the influence of factors such as electricity, therefore have good antijamming capability and insulativity, be highly suitable for the chemical plant, refinerys etc. are measured the density value of inflammable and explosive dangerous liquid, are a desirable density measuring equipment in fact.
Description of drawings
Fig. 1 is the structural drawing of the utility model.
Specific embodiments
Below in conjunction with accompanying drawing the utility model is described further, is not limited thereto but hold within the utility model.
The float type fiber grating liquid densimeter that the utility model provides, comprise float 1, the connecting rod 2 that links to each other with float 1, and connecting rod 2 lower ends place in the obturator 4, obturator 4 comprises by side plate 5, the hollow housing 6 that top board 3 surrounds, be socketed on the sealed base 7 of these hollow housing 6 bottoms, hollow housing 6 tops are provided with through hole 8, horizontal boom 12 1 ends that connecting rod 2 lower ends are passed in this through hole 8 and the obturator 4 link to each other, horizontal boom 12 other ends are fixedlyed connected with the fixture 14 in the hollow housing 6 by attachment screw 11, fixture 14 is fixed on hollow housing 6 inwalls by attachment screw 15 again, horizontal boom 12 is provided with fiber grating 13, hollow housing 6 side plates 5 are provided with through hole 9, and the Transmission Fibers 10 that links to each other with fiber grating 13 on the horizontal boom 12 is passed this through hole 9 and is connected with outside analytical equipment.Its course of work is: this float type fiber grating liquid densimeter is put into fluid to be measured, float 1 drivening rod 2 under buoyancy function moves up, make the horizontal boom 12 that links to each other with connecting rod 3 produce yield deformation, thereby the spectrum of fiber grating 13 inside on the horizontal boom 12 is changed, the signal that is produced after changing enters analytical equipment by Transmission Fibers 10 and carries out data analysis, to draw the density result.
Claims (5)
1. a float type fiber grating liquid densimeter comprises float, and the connecting rod that links to each other with float is characterized in that the connecting rod lower end places in the obturator, and with its on establish fiber grating horizontal boom link to each other, horizontal boom is fixed on the obturator.
2. float type fiber grating liquid densimeter according to claim 1 is characterized in that described obturator comprises the hollow housing that is surrounded by side plate, top board, is socketed on the sealed base of this hollow housing bottom.
3. float type fiber grating liquid densimeter according to claim 1, it is characterized in that described hollow housing top is provided with through hole, the connecting rod lower end that links to each other with float is passed this through hole and is linked to each other with horizontal boom one end, and the horizontal boom other end is fixed in the hollow housing by fixture.
4. float type fiber grating liquid densimeter according to claim 1 is characterized in that described fixture is fixed on the hollow housing inwall by attachment screw, and the horizontal boom other end is fixed on this fixture by attachment screw.
5. float type fiber grating liquid densimeter according to claim 1 is characterized in that described hollow housing sidepiece is provided with through hole, and the input-output optical fiber that links to each other with fiber grating on the horizontal boom passes this through hole and is connected with outside analytical equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201118081U CN201464321U (en) | 2009-08-17 | 2009-08-17 | Float type fiber-grating liquid densitometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201118081U CN201464321U (en) | 2009-08-17 | 2009-08-17 | Float type fiber-grating liquid densitometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464321U true CN201464321U (en) | 2010-05-12 |
Family
ID=42391672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201118081U Expired - Fee Related CN201464321U (en) | 2009-08-17 | 2009-08-17 | Float type fiber-grating liquid densitometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201464321U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629890B (en) * | 2009-08-17 | 2011-07-06 | 昆明理工大学 | Float type fiber grating liquid densimeter |
| CN102103060B (en) * | 2009-12-16 | 2012-07-18 | 中国石油天然气集团公司 | Steam assistant gravity drain (SAGD) ultra-thick oil and sewage high-temperature zone pressure closed density measuring method |
| CN109406528A (en) * | 2018-09-07 | 2019-03-01 | 昆明理工大学 | It is a kind of for detecting the fibre-optical sensing device and its temperature-compensation method of reinforcement corrosion |
-
2009
- 2009-08-17 CN CN2009201118081U patent/CN201464321U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629890B (en) * | 2009-08-17 | 2011-07-06 | 昆明理工大学 | Float type fiber grating liquid densimeter |
| CN102103060B (en) * | 2009-12-16 | 2012-07-18 | 中国石油天然气集团公司 | Steam assistant gravity drain (SAGD) ultra-thick oil and sewage high-temperature zone pressure closed density measuring method |
| CN109406528A (en) * | 2018-09-07 | 2019-03-01 | 昆明理工大学 | It is a kind of for detecting the fibre-optical sensing device and its temperature-compensation method of reinforcement corrosion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20120817 |