CN201802966U - Novel optical fiber valve position detector - Google Patents
Novel optical fiber valve position detector Download PDFInfo
- Publication number
- CN201802966U CN201802966U CN2010205016319U CN201020501631U CN201802966U CN 201802966 U CN201802966 U CN 201802966U CN 2010205016319 U CN2010205016319 U CN 2010205016319U CN 201020501631 U CN201020501631 U CN 201020501631U CN 201802966 U CN201802966 U CN 201802966U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- valve position
- curved element
- little curved
- information transmitter
- Prior art date
- 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
Links
Images
Landscapes
- Optical Transform (AREA)
Abstract
The utility model discloses a novel optical fiber valve position detector based on the change of bending loss of an optical fiber. The novel optical fiber valve position detector is mainly characterized in that a multi-circle microbending element is positioned in a shell (10) and connected with a probe rod (9); the multi-circle microbending element adopts a sensitive element and comprises various structures, for example, when the multi-circle microbending element comprises a curved shell (4), a plurality of deformable teeth are arranged on two opposite sides inside the curved shell (4) respectively, and a signal fiber (6) is clamped among the deformable teeth; and the probe rod (9) is driven to move due to the change of valve position of the valve, the length of the curved shell (4) is changed, the position change among the deformable teeth on both sides inside the curved shell (4) is caused, and the bending curvature of the signal fiber (6) clamped among the deformable teeth on both sides is changed, so that the microbending loss of the signal fiber (6) is changed, and after a test unit (5) detects the change of microbending loss, the change and state of the valve position of the valve can be obtained. The novel optical fiber valve position detector has high precision and low cost, is easy for networking by multiplexing and has a broad application prospect.
Description
Technical field
This novel practical relates to a kind of detection device that detects valve switch and unlatching size, or rather, relates to a kind of bending loss of optical fiber that utilizes and changes the device that detects valve opening state.
Background technique
Existing fluid transport all needs to be undertaken by line transportation, and wherein all too many levels all will be come by different valves each pipeline is controlled, so obtaining of the control of valve position and status information thereof just seems extremely important.Existing valve position information transmitter mainly contains mechanical contact-type, magnetic reed switch formula, electromagnetic type etc., but their shortcoming is a lot, as mechanical contact-type because poorly sealed, cause leak, gas leakage, leakage, the result causes contact erosion, bad connection; Magnetic reed switch formula and electromagnetic type can frequent flase drop wrong reports because of the unreliable and strong electromagnetic interference of device.
Chinese patent application number is 01229930.8 " optical fiber valve position information transmitter ", Chinese patent application number is that 01269646.3 " valve position information transmitter " and Chinese patent application number are that three patent applications of 200420071046.4 " the optical fiber information transmitters that are used for the straight journey cylinder valve " have all proposed the approximate optical fiber valve position information transmitter of a kind of principle, the i.e. variation that changes the optical signal in the fiber-optic probe loop of mobile driving one obstacle or reverberation by the valve position feeler lever, its advantage is anti-electromagnetic interference, can detect at a distance, but its shortcoming is an optical fiber is to disconnect at the sensing point place, cause the accurate alignment device of its needs, and take antidetonation, multiple interference protection measure such as dust protection; In addition, the optical fiber valve position information transmitter of this scheme can only detect the on off state of valve position, and the process status of opening for valve position there is not ability to detect, thereby has limited the using scope of such sensor.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, this novel practical provides a kind of valve position information transmitter based on bending loss of optical fiber, it is simple in structure, reasonable in design, processing and fabricating is convenient and usage mode is flexible, highly sensitive, using effect is good, and production, use, maintenance cost are low.
For solving the problems of the technologies described above, the technological scheme that this novel practical adopts is: a kind of novel optical fiber valve position information transmitter, comprise housing 10, main spring 15, secondary spring 16, in housing 10, be provided with the feeler lever 9 that is connected with valve, it is characterized in that: be positioned at housing 10, the little curved element of a multi-turn type arranged by what secondary spring 16 was connected with feeler lever 9, relative both sides in the little curved element of multi-turn type are laid with a plurality of distortion teeth, the distortion interdental splint is held signal optical fibre 6, the extended fiber 1 that passes through of signal optical fibre 6 connects test cell 5, connects processing unit 7 behind the test cell 5.
When the valve position of valve changes, drive moving of feeler lever 9, thereby make the length change of the little curved element of multi-turn type in the housing 10, distance between the distortion tooth of the relative both sides in the little curved element of multi-turn type changes, so also can change the bending curvature that is clamped in relative both sides distortion between cog signal optical fibre 6, test cell 5 obtains the displacement distance of feeler lever 9 by the variation of testing signal optical fiber 6 internal transmission optical signal powers, test cell 5 passes to processing unit 7 with detected signal, and processing unit 7 calculates the state of the valve position variation of valve.
The little curved element of described multi-turn type is to be made of a curved housing 4, be laid in a plurality of A side distortion tooth 4-1 and a plurality of B side distortion tooth 4-2 of described curved housing 4 inner both sides relatively, described A side distortion tooth 4-1 and B side distortion tooth 4-2 are staggered and lay, and A side distortion tooth 4-1 and B side distortion tooth 4-2 correspondence are laid in the both sides of signal optical fibre 6.
The little curved element of described multi-turn type is made of a spring type, the little curved element that is laid with interlaced corresponding distortion tooth on two adjacent rings spring thread 8, and two row distortion between cog accompany signal optical fibre.
The little curved element of described multi-turn type is to be made of a bellows 20, on the two opposite side surfaces of the interior recess of the tube wall 2 of bellows 20, be mounted with a plurality of A sides distortion tooth 4-1 and a plurality of B side distortion tooth 4-2, described A side distortion tooth 4-1 and B side distortion tooth 4-2 are staggered and lay, and A side distortion tooth 4-1 and B side distortion tooth 4-2 correspondence are laid in the both sides of signal optical fibre 6.
The little curved element of described multi-turn is to be made of the little curved element of the dull and stereotyped sawtooth pattern of individual layer, and promptly two gullet plates 18 constitute.
The little curved element of described multi-turn is to be made of the little curved element of the dull and stereotyped sawtooth pattern of individual layer, and described signal optical fibre forms the multi-turn structure in the mode of coiled coil and is held in the little curved element of dull and stereotyped sawtooth pattern.
The little curved element of described multi-turn is to be made of the two-layer or two-layer above little curved element of dull and stereotyped sawtooth pattern, and promptly the gullet plate 18 by three or more constitutes.
In described housing 10, have only the part and the little curved element of multi-turn of feeler lever 9.
End that is held on the signal optical fibre 6 between the two row distortion teeth at the little curved element of described multi-turn is mounted with light reflecting device 46, as reflector or fiber bragg grating.
1 mouthful of the other end of described signal optical fibre 6 and 1X2 shunt 45 is connected, 2 mouthfuls of 1X2 shunt 45 with being connected of test cell 5.
Signal optical fibre 6 in the little curved element of multi-turn type in the housing 10 more than two or two is connected on an optical fiber.Be mounted with light reflecting device 46 between the little curved element of any two multi-turn types, preferred way is the reflector or the fiber bragg grating of low reflection loss.
Described valve is safety valve, reduction valve, inhalation valve, solenoid valve or mortor operated valve.
In housing 10, be filled with greasy for preventing water.
Described signal optical fibre 6 is for the outside optical fiber that is surrounded by the multilayer fibers protective layer, as tight tube fiber, carbon coated fiber, polyimide coated optical fiber etc.; Described signal optical fibre also can be plastic optical fiber, multi-core fiber, thin footpath optical fiber or photonic crystal fiber.
This novel practical compared with prior art has the following advantages:
1, the novel optical fiber valve position information transmitter of this novel practical, it is convenient and usage mode is flexible, highly sensitive to have simple in structure, reasonable in design, operating method;
2, the novel optical fiber valve position information transmitter of this novel practical, because of using the little curved element of optical fiber multi-turn, make this device have anti-electromagnetic interference, highly sensitive, electrical insulating property good, safe and reliable, corrosion-resistant, can detect, be convenient to plurality of advantages such as multiplexing networking at a distance;
3, the novel optical fiber valve position information transmitter of this novel practical, because the light source that can adopt-luminous power method test, thereby can reduce the cost of test cell 5 significantly, thereby the whole cost of this device is reduced significantly, make this device have wide using scope.
4, the novel optical fiber valve position information transmitter of this novel practical, because of using the little curved element of optical fiber multi-turn, can detect the free position of valve position from face, and can accomplish to detect a large amount of valve states simultaneously, make energy saving, save material, low-carbon emission, the application of aspect such as control can realize originally with lower one-tenth automatically.
In sum, this novel practical is simple in structure, reasonable in design, processing and fabricating convenient and usage mode is flexible, highly sensitive, using effect is good, and have cost low, can detect at a distance, advantage such as easily networking is multiplexing, make the device of this novel practical have good use prospect.
Below by drawings and Examples, the technological scheme of novel practical is described in further detail.
Description of drawings
Fig. 1 is the structural representation of this novel practical first embodiment.
Fig. 2 is the cross-sectional structure schematic representation of curved housing 4 in this novel practical first embodiment.
Fig. 3 is the structural representation of this novel practical second embodiment.
Fig. 4 is the structural representation of this novel practical the 3rd embodiment.
Fig. 5 is the structural representation of this novel practical the 4th embodiment.
Fig. 6 is the structural representation of this novel practical the 5th embodiment.
Fig. 7 is the structural representation of this novel practical the 6th embodiment.
Fig. 8 is the structural representation of this novel practical the 7th embodiment.
Fig. 9 is this novel practical the 7th embodiment medi-spring silk 8 and the partial cross-section structural representation that is out of shape tooth, signal optical fibre 6 thereof.
Figure 10 is the structural representation of this novel practical the 8th embodiment.
Figure 11 is the partial cross section structural representation of bellows 20 in this novel practical the 8th embodiment.
Description of reference numerals:
| The 1-extended fiber; | 2-bellows tube wall; | |
| 4-curved housing; | The 5-test cell; | The 6-signal optical fibre; |
| The 7-processing unit; | The 8-spring thread; | The 9-feeler lever; |
| The 10-housing; | The 15-main spring; | The 16-secondary spring; |
| The 17-plain washer; | The 18-gullet plate; | The 20-bellows; |
| The 45-1X2 optical branching device; | The 46-light reflecting device; | 4-1-A side distortion tooth; |
| 4-2-B side distortion tooth. |
Embodiment
Embodiment 1
As Fig. 1, shown in Figure 2, in this novel practical, comprise housing 10, main spring 15, secondary spring 16, in housing 10, be provided with the feeler lever 9 that is connected with valve, particularly: be positioned at housing 10, by what secondary spring 16 was connected with feeler lever 9 the little curved element of a multi-turn type arranged, the little curved element of this multi-turn type is to be made of curved housing 4, secondary spring 16 contacts by plain washer 17 with curved housing 4, be laid in a plurality of A side distortion tooth 4-1 and a plurality of B side distortion tooth 4-2 of described curved housing 4 inner both sides relatively, described A side distortion tooth 4-1 and B side distortion tooth 4-2 are staggered and lay, and A side distortion tooth 4-1 and B side distortion tooth 4-2 correspondence are laid in the both sides of signal optical fibre 6.When the valve position of valve changes, drive moving of feeler lever 9, thereby make the length change of the curved housing 4 in the housing 10, distance between the distortion tooth of the relative both sides in the curved housing 4 changes, can change the bending curvature that is clamped in relative both sides distortion between cog signal optical fibre 6 like this, test cell 5 by testing signal optical fiber 6 internal transmission optical signal powers variation and pass to processing unit 7, processing unit 7 calculates the displacement distance of feeler lever 9, thereby obtains the state that the valve position of valve changes.
Described valve can be safety valve, reduction valve, inhalation valve, solenoid valve or mortor operated valve.As spring that acts on flap in the Direct spring loaded safety valve and the main spring in the present embodiment just can be same spring, so just valve position information transmitter and Direct spring loaded safety valve in the present embodiment are combined, in use, if safety valve is opened, then just can know the unlatching information of valve position, for automatic or telecontrol improve on-the-spot situation by the test cell 5 of far-end.
In housing 10, be filled with greasy for preventing water in order to waterproof and prolong working life of signal optical fibre.
Described signal optical fibre 6 is for the outside optical fiber that is surrounded by the multilayer fibers protective layer, as tight tube fiber, carbon coated fiber, polyimide coated optical fiber etc.; Described signal optical fibre also can be plastic optical fiber, multi-core fiber, thin footpath optical fiber or photonic crystal fiber.
As shown in Figure 3, in the present embodiment, as different from Example 1: do not have main spring 15 in the described housing 10.In the present embodiment, the structure of remaining part, annexation and working principle are all identical with embodiment 1.
Embodiment 3
As shown in Figure 4, in the present embodiment, as different from Example 1: do not have main spring 15 and secondary spring 16 in the described housing 10.In the present embodiment, the structure of remaining part, annexation and working principle are all identical with embodiment 1.
As shown in Figure 5, in the present embodiment, as different from Example 1: described signal optical fibre 6 is clamped between two gullet plates 18, feeler lever 9 contacts with gullet plate 18 by secondary spring 16, after feeler lever 9 moves with valve position, the length of secondary spring 16 just changes, thereby the impacting force between two gullet plates 18 is changed, distance between two gullet plates 18 also just changes, the bending curvature of signal optical fibre 6 is changed, and test cell 5 detects this variation, and passes to processing unit 7, processing unit 7 calculates the displacement distance of feeler lever 9, thereby obtains the state of the valve position variation of valve.
Signal optical fibre 6 can be laid in the mode of coiled coil between two gullet plates 18, prolongs the effective length of signal optical fibre 6, improves the precision of test.
Can certainly constitute two-layer or two-layer above little kinking structure by the gullet plate more than three or three 18, the effective length that prolongs signal optical fibre 6 improves the precision that detects.In the present embodiment, the structure of remaining part, annexation and working principle are all identical with embodiment 1.
As shown in Figure 6, in the present embodiment, as different from Example 1: an end of described signal optical fibre 6 is mounted with light reflecting device 46, and the other end of signal optical fibre 6 is by 1 mouthful of extended fiber 1 connection one 1X2 optical branching device 45, and 2 mouthfuls of 1X2 optical branching device 45 connect test cell 5.In the present embodiment, the structure of remaining part, annexation and working principle are all identical with embodiment 1.
As shown in Figure 6, in the present embodiment, as different from Example 1: have two signal optical fibres 6 in the curved housing 4 that constitutes the little curved elements of multilayer to be cascaded by extended fiber 1, form the quasi-distributed optical fiber sensed system, be mounted with light reflecting device 46 on the extended fiber 1 between in two curved housings 4, as fiber bragg grating, certainly preferred way is to select the fiber bragg grating of antiradar reflectivity for use.At this moment the preferably use optical time domain reflectometer (OTDR) of test cell 5, can obtain the variation of any one information transmitter by the test curve of optical time domain reflectometer, the height of reflected signal that further can be by measurement light reflecting means 46 reflects the variation of the information transmitter of these light reflecting device 46 fronts, thereby further improves testing precision.In the present embodiment, the structure of remaining part, annexation and working principle are all identical with embodiment 1.
As Fig. 8, shown in Figure 9, in the present embodiment, as different from Example 1: the little curved element of multi-turn is to have the element of interlaced corresponding distortion tooth to constitute on the two adjacent rings spring thread 8 by a spring type, and two row distortion between cog accompany signal optical fibre 6.In the present embodiment, the structure of remaining part, annexation and working principle are all identical with embodiment 1.
As Figure 10, shown in Figure 11, in the present embodiment, as different from Example 1: the little curved element of multi-turn is to be made of a bellows 20, on relative two faces of the recess on the tube wall 2 of bellows 20, be laid with a plurality of A side distortion tooth 4-1 and a plurality of B side distortion tooth 4-2 respectively, described A side distortion tooth 4-1 and B side distortion tooth 4-2 are staggered and lay, and A side distortion tooth 4-1 and B side distortion tooth 4-2 correspondence are laid in the both sides of signal optical fibre 6.In the present embodiment, the structure of remaining part, annexation and working principle are all identical with embodiment 1.
The above; it only is the preferred embodiment of this novel practical; be not that this novel practical is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of this novel practical technological scheme according to this novel practical technical spirit.
Claims (10)
1. novel optical fiber valve position information transmitter, comprise housing (10), in housing (10), be provided with the feeler lever (9) that is connected with valve, it is characterized in that: be positioned at housing (10), the little curved element of a multi-turn type arranged by what secondary spring (16) was connected with feeler lever (9), relative both sides in the little curved element of multi-turn type are laid with a plurality of distortion teeth, the distortion interdental splint is held signal optical fibre (6), signal optical fibre (6) connects test cell (5) by extended fiber (1), connects processing unit (7) behind the test cell (5).
2. according to the described novel optical fiber valve position of claim 1 information transmitter, it is characterized in that: the little curved element of described multi-turn type is to be made of a curved housing (4), be laid in a plurality of A side distortion teeth (4-1) and a plurality of B side distortion tooth (4-2) of the inner both sides relatively of described curved housing (4), described A side distortion tooth (4-1) and B side distortion tooth (4-2) are staggered to be laid, and A side distortion tooth (4-1) and B side distortion tooth (4-2) correspondence are laid in the both sides of signal optical fibre (6).
3. according to the described novel optical fiber valve position of claim 1 information transmitter, it is characterized in that: the little curved element of described multi-turn type is laid with interlaced corresponding distortion tooth by a spring type, on two adjacent rings spring thread (8) little curved element constitutes, and two row distortion between cog accompany signal optical fibre (6).
4. according to the described novel optical fiber valve position of claim 1 information transmitter, it is characterized in that: the little curved element of described multi-turn type is to be made of a bellows (20), on the two opposite side surfaces of the interior recess of the tube wall (2) of bellows (20), be mounted with a plurality of A sides distortion teeth (4-1) and a plurality of B side is out of shape tooth (4-2), described A side distortion tooth (4-1) and B side distortion tooth (4-2) are staggered to be laid, and A side distortion tooth (4-1) and B side distortion tooth (4-2) correspondence are laid in the both sides of signal optical fibre (6).
5. according to the described novel optical fiber valve position of claim 1 information transmitter, it is characterized in that: the little curved element of described multi-turn is to be made of the little curved element of the dull and stereotyped sawtooth pattern of individual layer, and promptly two gullet plates (18) constitute.
6. according to the described novel optical fiber valve position of claim 5 information transmitter, it is characterized in that: described signal optical fibre (6) forms the multi-turn structure in the mode of coiled coil and is held between two gullet plates (18).
7. according to the described novel optical fiber valve position of claim 1 information transmitter, it is characterized in that: the little curved element of described multi-turn is to be made of the two-layer or two-layer above little curved element of dull and stereotyped sawtooth pattern, and promptly the gullet plate (18) by three or more constitutes.
8. according to the described novel optical fiber valve position of claim 1 information transmitter, it is characterized in that: in described housing (10), have only the part and the little curved element of multi-turn of feeler lever (9).
9. according to the described novel optical fiber valve position of claim 1 information transmitter, it is characterized in that: in the little curved element of described multi-turn, the ends that are held on the signal optical fibre (6) between the two row distortion teeth are mounted with light reflecting device (46), 1 mouthful of the other end of described signal optical fibre (6) and 1X2 shunt (45) is connected, 2 mouthfuls of 1X2 shunt (45) with being connected of test cell (5).
10. according to the described novel optical fiber valve position of claim 1 information transmitter, it is characterized in that: the signal optical fibre (6) in the little curved element of the multi-turn type in the housing more than two or two (10) is connected on an optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205016319U CN201802966U (en) | 2010-08-23 | 2010-08-23 | Novel optical fiber valve position detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205016319U CN201802966U (en) | 2010-08-23 | 2010-08-23 | Novel optical fiber valve position detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802966U true CN201802966U (en) | 2011-04-20 |
Family
ID=43872464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205016319U Expired - Fee Related CN201802966U (en) | 2010-08-23 | 2010-08-23 | Novel optical fiber valve position detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011124126A1 (en) * | 2010-04-06 | 2011-10-13 | 西安金和光学科技有限公司 | Fiber optic sensor based on spiral structure |
| CN107560548A (en) * | 2017-07-28 | 2018-01-09 | 刘伟平 | A kind of Berry phases generator and the optical fibre displacement sensor based on Berry phases |
-
2010
- 2010-08-23 CN CN2010205016319U patent/CN201802966U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011124126A1 (en) * | 2010-04-06 | 2011-10-13 | 西安金和光学科技有限公司 | Fiber optic sensor based on spiral structure |
| US8616069B2 (en) | 2010-04-06 | 2013-12-31 | Xian Genher Optical Tech. Company | Fiber optic sensor based on spiral structure |
| CN107560548A (en) * | 2017-07-28 | 2018-01-09 | 刘伟平 | A kind of Berry phases generator and the optical fibre displacement sensor based on Berry phases |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102914289B (en) | Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system | |
| CN102235887B (en) | A kind of device measuring land subsidence | |
| CN101865665A (en) | Measurement device and method of optical fiber bending parameter | |
| CN103134430A (en) | Landslide monitoring system | |
| CN102564312A (en) | Landslide depth displacement monitoring device | |
| CN201802966U (en) | Novel optical fiber valve position detector | |
| CN103438927A (en) | Distributed sensing method for multi-core optical fiber | |
| CN105371781B (en) | A kind of method for measuring three-dimensional shape | |
| CN207457142U (en) | A kind of Prestressed concrete cylinder pipe fracture of wire optical fiber acoustic emission monitoring system | |
| CN101922948A (en) | Multilayer high-precision optical fiber detector based on microbending loss | |
| CN201901883U (en) | Optical-fiber type large-deformation foundation settlement monitoring device | |
| CN102538746A (en) | Optical-fiber-type large-deformation foundation settlement monitoring device | |
| CN102374333A (en) | Novel optical valve position signal device | |
| CN102374913A (en) | Universal pressure sensing device based on optical fiber microbending loss | |
| CN101900617A (en) | Optical fiber type non-invasive pipeline pressure sensor | |
| CN209744071U (en) | Urban heat supply pipeline optical fiber and copper wire leakage monitoring integrated system | |
| CN102221374B (en) | Fiber sensing device for sensing torque parameters | |
| CN201772967U (en) | Fiber stress sensing device based on corrugated pipe | |
| CN201819710U (en) | Optical fiber type flow monitoring device | |
| CN201903324U (en) | Optical fiber draw wire displacement sensor | |
| CN201772993U (en) | Multilayer type high-precision fiber detector based on microbending loss | |
| CN103134776A (en) | Liquid refractive index absolute measurement sensor based on D-type polarization maintaining optical fibre | |
| Inaudi et al. | Distributed fiber-optic sensing for long-range monitoring of pipelines | |
| CN2664005Y (en) | Reseau type optical fiber microbend sensor | |
| CN102914271A (en) | Brillouin distributed optical fiber sensing based structural joint monitoring device |
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: 20110420 Termination date: 20120823 |