CN201926539U - Optical fiber pressure sensor - Google Patents
Optical fiber pressure sensor Download PDFInfo
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- CN201926539U CN201926539U CN2010206429516U CN201020642951U CN201926539U CN 201926539 U CN201926539 U CN 201926539U CN 2010206429516 U CN2010206429516 U CN 2010206429516U CN 201020642951 U CN201020642951 U CN 201020642951U CN 201926539 U CN201926539 U CN 201926539U
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- optical fiber
- connecting pipe
- contiguous block
- fixing plate
- pressure sensor
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Abstract
An optical fiber pressure sensor comprises a hollow solenoid, an upper fixing plate, a lower fixing plate, a connecting tube, a fixing ring, an elastic diaphragm, a connecting block, sealing rings and the like, wherein the hollow solenoid is wound by an optical fiber, and the connecting tube is connected with the connecting block and the fixing ring. The optical fiber optical fiber is fixedly connected with the upper fixing plate and the lower fixing plate in a glued manner, and positioned in a cavity of the connecting tube, the upper fixing plate closely attaches to the elastic diaphragm, the lower fixing plate closely attaches to the connecting block, the elastic diaphragm is fixed in a groove of the connecting tube by the fixing ring, and the optical fiber at two ends of the solenoid extends out of the connecting block. In order to ensure oil tightness, the sealing rings are required to be used for sealing between the connecting tube and the connecting block, and between the fixing ring and the elastic diaphragm. The optical fiber pressure sensor has the advantages of high measurement accuracy and safety, small size, light weight and simple structure.
Description
Technical field: the utility model relates to a kind of measurement mechanism, and especially a kind of optical fiber pressure sensor belongs to sensor and field of measuring technique.
Background technology: aspect the aircraft fuel oil oil-level measurement, the main at present condenser type fuel level sensor that uses, this respect technology reaches its maturity, but this sensor accuracy is not high and heavy; Most recently used ultrasound wave fuel level sensor wants high although the oil-level measurement ratio of precision is capacitive, and this ultrasonic sensor power consumption is big, when aircraft flight attitude changes, exist and measure the blind area, and it will use with waveguide usually.Aspect the fuel density measurement, the main at present indirect method of measuring the fuel oil specific inductive capacity that adopts, but because Aviation Fuel is a kind of complex mixture, its specific inductive capacity and its place of production, pollution level are relevant, the relation of fuel density and specific inductive capacity is always inconstant, so the precision of this method is not high.In addition, the current densitometer that direct measurement fuel density also occurred as radioactivity, resonant mode fuel density sensor, but is used few on novel machine.Aspect level gauging, a lot of novel sensors are arranged, as Fibre Optical Sensor, representative Fibre Optical Sensor and the fiber-optic grating sensor that is based on little curved principle, but the former physical construction is comparatively complicated, is difficult for obtaining higher measuring accuracy, and latter's signal processing circuit structure complexity.
The novel fuel fuel-quantity transducer is the developing direction of fuel measuring system, and Fibre Optical Sensor has measuring accuracy height, safe, advantage such as volume is little, in light weight and antijamming capability is strong, certainly will become an important branch of fuel measuring system sensor.
The utility model content: the purpose of this utility model is to provide a kind of precision high and safe optical fiber pressure sensor for addressing the above problem, can obtain fuel level information according to liquid pressure by it, also can obtain fuel density information according to the pressure difference of level altitude.
For achieving the above object, the technical solution adopted in the utility model is: a kind of optical fiber pressure sensor comprises the air core solenoid that is wound in by optical fiber, upper mounted plate, bottom plate, connecting pipe, set collar, flexible sheet, parts such as contiguous block and O-ring seal.
Connecting pipe is connected with contiguous block and set collar.The optical fiber solenoid is fixedlyed connected with adhesive means with last bottom plate, is placed on then in the cavity of connecting pipe, and upper mounted plate is close to flexible sheet, and bottom plate is close to contiguous block.Set collar is fixed on flexible sheet in the groove of connecting pipe.Solenoidal two ends optical fiber stretches out contiguous block.In order to guarantee oil-tightness, between connecting pipe and the contiguous block, all need between set collar and the flexible sheet to seal with O-ring seal.
The advantage of utility model is: sensor measurement precision height, safe, volume is little, and is in light weight, simple in structure.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
As shown in Figure 1: a kind of optical fiber pressure sensor comprises the air core solenoid 4 that optical fiber is wound in, upper mounted plate 5, bottom plate 8, set collar 2, flexible sheet 3, connecting pipe 1, O-ring seal 6, O-ring seal 7 and contiguous block 9.Optical fiber solenoid 4 and upper mounted plate 5, bottom plate 8 are fixedlyed connected with adhesive means, then they are placed in the cavity of connecting pipe 1, and upper mounted plate 5 is close to flexible sheet 3, and bottom plate 8 is close to contiguous block 9.Set collar 2 is fixed on flexible sheet 3 in the groove of connecting pipe 1, seals with first O-ring seal 6.Connecting pipe 1 is connected with contiguous block 9, seals with second O-ring seal 7.Contiguous block 9 is stretched out at the optical fiber two ends of optical fiber solenoid 4.Its work engineering is as follows: will produce pressure when external pressure acts on the flexible sheet 3, this pressure is perpendicular to optical fiber solenoid 4 axis directions, deformation perpendicular to axial direction will take place in the shape of optical fiber solenoid 4, this deformation will cause changing by the pressure change of the light intensity in the optical fiber along with the outside, by measuring the size that can reflect liquid pressure by the size of optical fiber light intensity.The needs of optical fiber be to be installed, to be left through holes in the middle of the contiguous block 9, the interior air pressure of this inside cavity air pressure that also guarantees connecting pipe 1 and mounting pipe is identical simultaneously.Above connecting pipe 1, set collar 2, contiguous block 9 all connects with thread forms.
Claims (2)
1. an optical fiber pressure sensor comprises the air core solenoid that is wound in by optical fiber, upper mounted plate, bottom plate, connecting pipe, set collar, flexible sheet and contiguous block; Connecting pipe is connected with contiguous block and set collar; Solenoid is fixedlyed connected with adhesive means with last bottom plate, is placed on then in the cavity of connecting pipe, and upper mounted plate is close to flexible sheet, and bottom plate is close to contiguous block; Set collar is fixed on flexible sheet in the connecting pipe groove; Solenoidal two ends optical fiber stretches out contiguous block; Between connecting pipe and the contiguous block, all seal between set collar and the flexible sheet with O-ring seal.
2. a kind of optical fiber pressure sensor as claimed in claim 1 is characterized in that: described set collar, and contiguous block, connecting pipe all connects with thread forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206429516U CN201926539U (en) | 2010-12-06 | 2010-12-06 | Optical fiber pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206429516U CN201926539U (en) | 2010-12-06 | 2010-12-06 | Optical fiber pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926539U true CN201926539U (en) | 2011-08-10 |
Family
ID=44430384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206429516U Expired - Fee Related CN201926539U (en) | 2010-12-06 | 2010-12-06 | Optical fiber pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926539U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080980A (en) * | 2010-12-06 | 2011-06-01 | 沈阳航空航天大学 | Measuring device and method of oil level/ intensity of airplane fuel oil |
| CN111426411A (en) * | 2020-05-11 | 2020-07-17 | 浙江大学 | Multi-scale flexible light-sensitive mechanical pressure sensor |
-
2010
- 2010-12-06 CN CN2010206429516U patent/CN201926539U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080980A (en) * | 2010-12-06 | 2011-06-01 | 沈阳航空航天大学 | Measuring device and method of oil level/ intensity of airplane fuel oil |
| CN102080980B (en) * | 2010-12-06 | 2012-12-05 | 沈阳航空航天大学 | Measuring method of oil level/ intensity of airplane fuel oil |
| CN111426411A (en) * | 2020-05-11 | 2020-07-17 | 浙江大学 | Multi-scale flexible light-sensitive mechanical pressure sensor |
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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: 20110810 Termination date: 20121206 |