CN206114184U - Fiber grating spring pipe pressure sensor - Google Patents
Fiber grating spring pipe pressure sensor Download PDFInfo
- Publication number
- CN206114184U CN206114184U CN201620985245.9U CN201620985245U CN206114184U CN 206114184 U CN206114184 U CN 206114184U CN 201620985245 U CN201620985245 U CN 201620985245U CN 206114184 U CN206114184 U CN 206114184U
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- CN
- China
- Prior art keywords
- shell
- pressure sensor
- fiber
- grating
- tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a fiber grating spring pipe pressure sensor relates to pressure sensor. A fiber grating spring pipe pressure sensor, includes shell, C type spring pipe, optic fibre, bragg grating strain, temperature compensation grating, fixed block, bragg grating strain adhesive fixation on beam of constant strength, beam of constant strength fixes on the fixed block, the thread tightening is in the shell for the fixed block, C type spring pipe fix in the shell, the steel wire is connected with beam of constant strength for the head, the temperature compensation grating pass the capillary, both ends are sticky at the both ends of capillary, the capillary is sticky on the shell inner wall, the fiber reel spread into armor tail optical fiber sleeve pipe well into, armor tail optical fiber sleeve pipe revolves admittedly on the shell with connecting, protect the optic fibre of following the shell and drawing forth. The utility model discloses simple structure, equipment simple to operate has effectively improved pressure measuring precision and sensitivity, and elimination outside temperature change has very high practical value to measuring error's influence.
Description
Technical field
This utility model is related to a kind of pressure transducer, more particularly to applies in the stream such as civil engineering surveying pressure, hydraulic pressure
A kind of fiber grating spring-tube pressure sensor of body pressure change.
Background technology
At present, based on Fiber Bragg Grating FBG（FBG）The sensor technology of principle is rapidly developed, and fiber grating has
The advantages of preventing electromagnetic interference, non-electric detection, anti-lightning, fiber grating spring-tube pressure sensor is in measurement such as pipeline gas pressure
Applied in power, underground water level measurement, ground hole water level monitoring and other industrial fluids pressure measxurements.
But, as field engineering-environment is complicated, when running into vile weather, structure temperature change is fast, it is desirable to pressure sensing
Device must possess good heat conductivity energy real-time temperature compensation, to eliminate impact of the temperature change to pressure measurement；Meanwhile,
The pressure measurement required precision of different engineer applied occasions is high.And the pressure transducer of existing structure cannot meet these requirements.
In order to solve in the fluid pressure measurement such as engineering pressure measurement of prior art presence precision not enough and temperature-compensating
The big defect of error, this utility model have developed a kind of fiber grating spring-tube pressure sensor.
The content of the invention
The purpose of this utility model is to provide a kind of fiber grating spring-tube pressure sensor.
This utility model is achieved through the following technical solutions：
A kind of fiber grating spring-tube pressure sensor, including shell, c-type bourdon tube, optical fiber, strain grating, temperature compensation light
Grid, fixed block；
Described strain grating is gluing to be fixed on the beam of uniform strength, and the beam of uniform strength is fixed on fixed block, fixed block spiral shell
Stricture of vagina is fixed on inside the shell；
Described c-type bourdon tube is fixed on inside the shell, and end socket steel wire is connected with the beam of uniform strength；
Described temperature compensation grating passes through capillary tube, two ends to be adhesive in the two ends of capillary tube, and capillary tube is adhesive in outer casing inner wall
On；
The good incoming armored end fiber sleeve pipe of described fiber reel, armored end fiber sleeve pipe and joint are rotated with shell, are protected
From the optical fiber that shell is drawn.
Further, described shell, armored end fiber sleeve pipe, capillary tube are stainless steel structure, it is preferred to use 304 rustless steels
Material makes, to prevent sensor corrosion in life-time service.
It is described it is gluing be carried out using 353ND glue it is gluing.
The described beam of uniform strength is the beryllium-bronze beam of uniform strength, and described c-type bourdon tube is beryllium-bronze c-type bourdon tube, c-type bullet
The fixing end of reed pipe is fixed on the inwall of shell.
Strain grating is cemented on the beam of uniform strength by 353ND glue, strains grating in assembling by this utility model first
It is placed in the middle and dry；Then temperature compensation grating is through in the middle of stainless steel capillary, keeps pre- tensioning 1nm states, two ends 353ND glue
Cementation is simultaneously dried, and afterwards, Stainless Steel Capillary effective 353ND glue bonds is dried in stainless steel casing inwall；3rd step is by c-type bullet
Spring is fixed in stainless steel casing, with steel wire connecting spring channel closure and the beam of uniform strength；The beam of uniform strength is first fixed on by the 4th step
On fixed block, fixed block nut is fixed in stainless steel casing, by fiber reel good incoming armored end fiber sleeve pipe；Finally by armour
Dress tail optical fiber sleeve pipe and joint are rotated with stainless steel casing, are protected from stainless steel casing the optical fiber pigtail drawn, are then sealed
Stainless steel casing.
This utility model encapsulates the beam of uniform strength and strain grating in stainless steel casing is used for pressure measxurement, encapsulates not
Rust steel wool tubule is measured as temperature change, collectively constitutes the core transducing part of pressure transducer；When ambient pressure occurs to become
After change, the amount of deflection change that the beam of uniform strength is produced can cause to strain grating generation axial force, so as to affect to strain raster center
Wavelength change is measuring the change of ambient pressure；Temperature compensation grating is adhesive in stainless steel capillary two ends, measures stainless steel casing
Interior change of temperature field, the wavelength change for becoming grating so as to eliminate temperature change correspondence affect；Intensity beam and c-type bourdon tube adopt beryllium
Bronze material makes, and is fixed on the inwall of stainless steel casing by screw thread, reduces error effect to play；Shell, armouring
Tail optical fiber sleeve pipe, stainless steel capillary are made using 304 stainless steel materials, to prevent sensor corrosion in life-time service.
During use, trip temperature calibration and pressure calibration are entered to fiber grating spring-tube pressure sensor first；Temperature calibration
Area requirement rises gentle cooling and respectively does twice, once strain grating wavelength and temperature compensation light every 5 DEG C of records from -20 DEG C to 85 DEG C
Grid wavelength data, after temperature calibration terminates, calculates the temperature compensation coefficient of the sensor；During pressure calibration, it is desirable in constant temperature
Carry out in environment, be connected with pressure source by the centre bore of rustless steel lower cover, once strain every 1/20th range record
Grating wavelength data, after pressure calibration terminates, calculate the pressure change coefficient of the sensor.In engineering use, by joint
Centre bore be connected with detected fluid pipeline, it is also possible to fiber grating spring-tube pressure sensor is directly rendered to into tested gas
In.
This utility model simple structure, assembling are easy for installation, effectively increase the accuracy and sensitivity of pressure measurement, eliminate
Ambient temperature changes the impact to measurement error, in the monitoring of the Fluid pressures such as pressure, hydraulic pressure has very high practical value.
Description of the drawings
Fig. 1 is principle schematic of the present utility model；
In figure：1- optical fiber, 2- armored end fiber sleeve pipes, 3- shells, 4-C type bourdon tubes, 5- end sockets, 6- glue, 7- nuts, 8- are solid
Determine block, 9- steel wires, 10- strain gratings, 11- glue, the 12- beam of uniform strengths, 13- fixing ends, 14- temperature compensation gratings, 15- capillary tubies, 16-
Joint.
Specific embodiment
It is to make the purpose of this utility model, technical scheme and advantage clearer, new to this practicality below in conjunction with accompanying drawing
Type embodiment is described in detail.
As shown in figure 1, a kind of fiber grating spring-tube pressure sensor, including shell 3, c-type bourdon tube 4, optical fiber 1, should
Become grating 10, temperature compensation grating 14, fixed block 8；Strain grating 10 is fixed on the beam of uniform strength 12 by 353ND glue, the beam of uniform strength
12 are fixed on fixed block 8, and fixed block 8 is with being threadedly secured in shell 3；C-type bourdon tube 4 is fixed in shell 3, and end socket 5 is used
Steel wire 9 is connected with the beam of uniform strength 12；Temperature compensation grating 14 passes through capillary tube 15, and two ends are adhesive in the two ends of capillary tube 15, capillary tube
15 are adhesive on 3 inwall of shell；The good incoming armored end fiber sleeve pipe 2 of 1 disk of optical fiber, armored end fiber sleeve pipe 2 and joint 16 pass through nut 7
It is rotated with shell 3, protects from shell 3 optical fiber 1 drawn.
Wherein shell 3, armored end fiber sleeve pipe 2, capillary tube 15 are stainless steel structure, it is preferred to use 304 stainless steel material systems
Make；The beam of uniform strength 12 be the beryllium-bronze beam of uniform strength, c-type bourdon tube 4 be beryllium-bronze c-type bourdon tube, the fixing end of c-type bourdon tube 4
13 inwalls for being fixed on shell 3.
Claims (4)
1. a kind of fiber grating spring-tube pressure sensor, it is characterised in that including shell, c-type bourdon tube, optical fiber, answer darkening
Grid, temperature compensation grating, fixed block；
Described strain grating is gluing to be fixed on the beam of uniform strength, and the beam of uniform strength is fixed on fixed block, and fixed block is solid with screw thread
It is scheduled on inside the shell；Described c-type bourdon tube is fixed on inside the shell, and end socket steel wire is connected with the beam of uniform strength；Described temperature compensation light
Grid pass through capillary tube, two ends to be adhesive in the two ends of capillary tube, and capillary tube is adhesive on outer casing inner wall；Described fiber reel is good incoming
Armored end fiber sleeve pipe, armored end fiber sleeve pipe and joint are rotated with shell, protect from shell the optical fiber drawn.
2. a kind of fiber grating spring-tube pressure sensor according to claim 1, it is characterised in that described shell,
Armored end fiber sleeve pipe, capillary tube are stainless steel structure.
3. a kind of fiber grating spring-tube pressure sensor according to claim 1 and 2, it is characterised in that described glue
It is viscous be carried out using 353ND glue it is gluing.
4. a kind of fiber grating spring-tube pressure sensor according to claim 1 and 2, it is characterised in that described etc.
Intensity beam is the beryllium-bronze beam of uniform strength, and described c-type bourdon tube is beryllium-bronze c-type bourdon tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620985245.9U CN206114184U (en) | 2016-08-30 | 2016-08-30 | Fiber grating spring pipe pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620985245.9U CN206114184U (en) | 2016-08-30 | 2016-08-30 | Fiber grating spring pipe pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114184U true CN206114184U (en) | 2017-04-19 |
Family
ID=58514081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620985245.9U Expired - Fee Related CN206114184U (en) | 2016-08-30 | 2016-08-30 | Fiber grating spring pipe pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206114184U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197482A (en) * | 2018-10-30 | 2020-05-26 | 中石化石油工程技术服务有限公司 | Optical fiber-electronic composite logging sensor |
| CN112729399A (en) * | 2020-12-25 | 2021-04-30 | 武汉理工大学 | Liquid-gas pressure and liquid-gas vibration sensor and preparation method thereof |
| CN112902860A (en) * | 2021-01-22 | 2021-06-04 | 重庆大学 | Device based on FBG test rock mass three-dimensional stress |
| CN113008441A (en) * | 2021-02-26 | 2021-06-22 | 武汉理工大学 | Fiber grating sensor for measuring liquid pressure and vibration |
| CN113340223A (en) * | 2021-06-02 | 2021-09-03 | 桂林理工大学 | Fiber grating strain sensor with adjustable measuring range and preparation and use methods thereof |
-
2016
- 2016-08-30 CN CN201620985245.9U patent/CN206114184U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197482A (en) * | 2018-10-30 | 2020-05-26 | 中石化石油工程技术服务有限公司 | Optical fiber-electronic composite logging sensor |
| CN112729399A (en) * | 2020-12-25 | 2021-04-30 | 武汉理工大学 | Liquid-gas pressure and liquid-gas vibration sensor and preparation method thereof |
| CN112729399B (en) * | 2020-12-25 | 2023-03-14 | 武汉理工大学 | Liquid-gas pressure and liquid-gas vibration sensor and preparation method thereof |
| CN112902860A (en) * | 2021-01-22 | 2021-06-04 | 重庆大学 | Device based on FBG test rock mass three-dimensional stress |
| CN113008441A (en) * | 2021-02-26 | 2021-06-22 | 武汉理工大学 | Fiber grating sensor for measuring liquid pressure and vibration |
| CN113340223A (en) * | 2021-06-02 | 2021-09-03 | 桂林理工大学 | Fiber grating strain sensor with adjustable measuring range and preparation and use methods thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20170830 |