CN104931190B - A kind of fiber bragg grating osmometer glue-free mechanical sealing structure - Google Patents
A kind of fiber bragg grating osmometer glue-free mechanical sealing structure Download PDFInfo
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- CN104931190B CN104931190B CN201510415707.3A CN201510415707A CN104931190B CN 104931190 B CN104931190 B CN 104931190B CN 201510415707 A CN201510415707 A CN 201510415707A CN 104931190 B CN104931190 B CN 104931190B
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Abstract
It is contemplated that overcoming fiber bragg grating osmometer existing for prior art, using marine glue, to seal, stability is poor, sealing effectiveness is bad, influences the problem of osmometer precision, provide a kind of fiber bragg grating osmometer glue-free mechanical sealing structure, substitute traditional marine glue to be sealed for fiber bragg grating osmometer by nylon tube, pressure-resistant fast twist-on head, heat-shrink tube, support is played a part of by metal support tube.Nylon tube is because its special material is resistant to 10Mpa pressure and does not produce serious deformation, so the protection sleeve pipe of optical fiber should be used it as；Pressure-resistant fast twist-on head can be by extruding nylon tube, to reach the effect of sealing；Heat-shrink tube is used for the docking of optical cable and nylon tube, solid and reliable；Hydraulic tongs is used to extrude metal support tube to reach sealing effectiveness.The shortcomings that long-time stability that the present invention can solve existing sealant sealing mode by mechanical seal structure are poor, pressure-resistant scope is small.
Description
Technical field
The invention belongs to sensory field of optic fibre, and in particular to a kind of fiber bragg grating osmometer is without the purely mechanic sealing structure of glue.
Background technology
Osmometer is mainly used in measuring the pressure of fluid, hole, dykes and dams, subway, bridge etc. for a long time.Now, it is most of
All use traditional electric class osmometer, it is low that the electric class osmometer of tradition has a measurement accuracy, poor waterproof properties, short life, anti-electromagnetism
The shortcomings of interference performance difference；Fiber bragg grating osmometer can overcome the shortcomings that traditional electric class osmometer, have measurement accuracy high, survey
It is big to measure scope, water resistance is high, many advantages, such as electromagnetism interference.But grating osmometer under light on the market, is used anti-
Glue increases water proofing property, because marine glue is in the case where long-time measures, stability can because glue in itself gradually reduce, and
Marine glue is pressure-resistant, and scope is small, so being badly in need of a kind of strong fiber bragg grating osmometer sealing structure of reliable stability at present.
The content of the invention
The technical problems to be solved by the invention are to overcome fiber bragg grating osmometer existing for prior art to use waterproof
Stability is poor, sealing effectiveness is bad, influences the problem of osmometer precision to seal for glue, there is provided a kind of fiber bragg grating osmometer
Glue-free mechanical sealing structure.
In order to solve the above technical problems, the present invention adopts the following technical scheme that realization：
A kind of fiber bragg grating osmometer glue-free mechanical sealing structure, including a fiber grating being made up of fiber grating ooze
Pressure is counted, it is characterised in that a pressure-resistant one-way joint stubborn soon is docked with fiber bragg grating osmometer by screw thread, pressure-resistant to twist soon unidirectionally
The other end of joint is screw nut structure, by the screw nut structure of pressure-resistant fast stubborn one-way joint by first paragraph nylon tube
One end is sealingly mounted at the other end of pressure-resistant one-way joint stubborn soon, and the optical fiber that fiber bragg grating osmometer stretches out is twisted unidirectionally soon from pressure-resistant
Passed through in joint, for the fused fiber splice of two sections of fiber alignments to be disposed in first paragraph nylon tube, first paragraph nylon tube it is another
One end is tightly connected with the one end of a both ends for the pressure-resistant fast stubborn bidirectional joint of screw nut structure, pressure-resistant bidirectional joint stubborn soon
The other end be tightly connected second segment nylon tube, optical fiber continue passed through from second segment nylon tube, metal branch is cased with optical cable
Stay tube, second segment nylon tube and optical cable are crimped together using the method for metal crimp, by outside metal support tube and its
Corresponding second segment nylon tube carries out mechanically deform and reaches crush seal effect so as to be formed at deformation, at deformation；
Further technical scheme includes：
Marine glue is full of in first paragraph nylon tube；
Heat-shrink tube is cased with deformation and does outer protection.
Compared with prior art the beneficial effects of the invention are as follows：
Now still protected on the market at most of fiber bragg grating osmometer tail optical fiber fiber using by the bonding of marine glue
Sealing property is demonstrate,proved, because marine glue self-characteristic causes that the pressure-resistant scope of such a method is smaller, and long-time stability are poor, of the present invention
A kind of fiber bragg grating osmometer without the purely mechanic sealing structure of glue, solve fiber grating osmotic pressure by way of mechanical presses completely
The pressure-resistant seal problem under 10Mpa environment under water is counted, and disposably solves the protection sealing problem of fusion point.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structural representation without the purely mechanic sealing structure of glue of fiber bragg grating osmometer of the present invention.
In figure：1st, pressure-resistant one-way joint stubborn soon, 2, pressure-resistant bidirectional joint stubborn soon, 3, second segment nylon tube, 4, fiber grating
Osmometer, 5, metal support tube, 6, at deformation, 7, heat-shrink tube, 8, optical cable, 9, at fused fiber splice, 10, first paragraph nylon tube, 11,
Optical fiber.
Embodiment
The present invention is explained in detail below in conjunction with the accompanying drawings：
A kind of fiber bragg grating osmometer glue-free mechanical sealing structure, including a fiber grating being made up of fiber grating ooze
Pressure counts 4, it is characterised in that a pressure-resistant one-way joint 1 stubborn soon is docked with fiber bragg grating osmometer 4 by screw thread, pressure-resistant to twist list soon
It is screw nut structure to the other end of joint 1, by the screw nut structure of pressure-resistant fast stubborn one-way joint 1 by first paragraph nylon
One end of pipe 10 is sealingly mounted at the other end of pressure-resistant fast stubborn one-way joint 1, and the optical fiber 11 that fiber bragg grating osmometer 4 stretches out is from resistance to
Pressure is passed through in stubborn one-way joint soon, and fused fiber splice 9 is disposed in first paragraph nylon tube 10, the other end of first paragraph nylon tube 10 with
One both ends is that one end of the pressure-resistant fast stubborn bidirectional joint 2 of screw nut structure is tightly connected, pressure-resistant to twist the another of bidirectional joint 2 soon
One end is tightly connected second segment nylon tube 3, and optical fiber 11 continues to pass through from second segment nylon tube 3, and metal is cased with optical cable 8
Support tube 5, second segment nylon tube 3 and optical cable 8 are crimped together using the method for metal crimp, by metal support tube 5
Mechanically deform is carried out so as to be formed 6 at deformation with its outer corresponding second segment nylon tube 3,6 reach crush seal effect at deformation,
Be full of marine glue in the first paragraph nylon tube 10,6 at the deformation outside be cased with heat-shrink tube 7 and do outer protection.
Using a kind of fiber bragg grating osmometer glue-free mechanical sealing structure of the present invention in fiber bragg grating osmometer 4
The operating process that is sealed and protected of optical fiber 11 it is as follows：
The first step, one end of pressure-resistant fast stubborn one-way joint 1 is screwed in one end of the fiber of fiber bragg grating osmometer 4；
Second step, 80 degree of softening rear enclosures are carried out to first paragraph nylon tube 10 on pressure-resistant one-way joint 1 stubborn soon；
3rd step, the sealing nut of locked pressure-resistant fast stubborn one-way joint 1；
4th step, the optical fiber in first paragraph nylon tube 10 is cut down into one section of preparation welding；
5th step, welding success, goes to protection；
6th step, at fused fiber splice then 9 fill ultraviolet glue to strengthen fixing fused fiber splice plus resin plate on plate
Place 9, after ultraviolet adhesive curing, is full of 704 marine glues on the whole both ends cavity of first paragraph nylon tube 10 and resin plate；
7th step, first paragraph nylon tube 10 and second segment nylon tube 3 are docked and locked by pressure-resistant bidirectional joint 2 stubborn soon
Extremely, two points easily revealed so far are protected by pressure-resistant one-way joint 1 stubborn soon and pressure-resistant bidirectional joint 2 stubborn soon respectively：Optical fiber
At the tail end fiber of grating osmometer 4 and 9 at the fused fiber splice of optical fiber extension.
8th step, after the root pressure larger part of fiber bragg grating osmometer 4 is protected by above step, as shown in figure 1,
First metal support tube 5 is enclosed on second segment nylon tube 3, optical fiber pierces into second segment nylon tube 3, is supported metal using hydraulic tongs
The compressive strain of pipe 56 at deformation, reaches the effect of crush seal so as to be formed, and finally does outer protection with heat-shrink tube 7.
Claims (2)
1. a kind of fiber bragg grating osmometer sealing structure, including a fiber bragg grating osmometer (4) being made up of fiber grating, its
It is characterised by that a pressure-resistant one-way joint (1) stubborn soon is docked with fiber bragg grating osmometer (4) by screw thread, pressure-resistant fast twist unidirectionally connects
The other end of head (1) be screw nut structure, by the pressure-resistant screw nut structure of one-way joint (1) of twisting soon by first paragraph nylon
One end of pipe (10) is sealingly mounted at the other end of pressure-resistant fast stubborn one-way joint (1), the optical fiber that fiber bragg grating osmometer (4) stretches out
(11) passed through from pressure-resistant one-way joint (1) stubborn soon, (9) are placed in first paragraph nylon tube (10) at fused fiber splice, first paragraph Buddhist nun
The other end of dragon pipe (10) and a both ends are tightly connected for one end of the pressure-resistant fast stubborn bidirectional joint (2) of screw nut structure,
The other end of pressure-resistant fast stubborn bidirectional joint (2) is tightly connected second segment nylon tube (3), and optical fiber (11) continues from second segment nylon tube
(3) passed through in, metal support tube (5) be cased with optical cable (8), using metal crimp method by second segment nylon tube (3) with
Optical cable (8) is crimped together, and metal support tube (5) and its outer corresponding second segment nylon tube (3) are carried out into mechanically deform
So as to be formed at deformation (6), (6) reach crush seal effect at deformation, are full of marine glue in first paragraph nylon tube (10)；Optical fiber
Weld (9) has filled ultraviolet glue to strengthen fixing at fused fiber splice (9) on resin plate, has treated that ultraviolet glue is consolidated added with resin plate
After change, marine glue is full of on whole first paragraph nylon tube (10) both ends cavity and resin plate.
A kind of 2. fiber bragg grating osmometer sealing structure according to claim 1, it is characterised in that (6) outer cover at deformation
There is heat-shrink tube (7) to do outer protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415707.3A CN104931190B (en) | 2015-07-16 | 2015-07-16 | A kind of fiber bragg grating osmometer glue-free mechanical sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415707.3A CN104931190B (en) | 2015-07-16 | 2015-07-16 | A kind of fiber bragg grating osmometer glue-free mechanical sealing structure |
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| CN104931190A CN104931190A (en) | 2015-09-23 |
| CN104931190B true CN104931190B (en) | 2018-03-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20180116375A (en) * | 2016-02-26 | 2018-10-24 | 서니브룩 리서치 인스티튜트 | An imaging probe having a rotatable core |
| CN109211797A (en) * | 2018-11-01 | 2019-01-15 | 北京航空航天大学 | A kind of fiber bragg grating temperature sensor with the anti-axial strain interference of temperature-compensating |
| CN109633818B (en) * | 2018-12-10 | 2020-10-16 | 河北汉光重工有限责任公司 | Optical fiber melting point protection method and device for optical fiber gyroscope |
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| US5185844A (en) * | 1991-07-29 | 1993-02-09 | At&T Bell Laboratories | Closure for optical fiber connective arrangements and method of providing same |
| CN101545817A (en) * | 2009-04-30 | 2009-09-30 | 山东省科学院激光研究所 | Fiber grating osmotic pressure sensor with low measuring range |
| CN201327988Y (en) * | 2008-12-17 | 2009-10-14 | 古叶辉 | Pre-insulated butt pipe |
| CN101915966A (en) * | 2010-07-14 | 2010-12-15 | 中国科学院半导体研究所 | Downhole optical cable connecting and protecting device |
| CN102103028A (en) * | 2009-12-16 | 2011-06-22 | 中国石油天然气股份有限公司 | Method for sealing fiber pressure sensor |
| CN102109643A (en) * | 2011-02-18 | 2011-06-29 | 深圳市特发信息光网科技股份有限公司 | Optical fiber quick coupling and splicing method thereof |
| CN104155726A (en) * | 2014-08-22 | 2014-11-19 | 北京卫星环境工程研究所 | High-air-tightness multi-core optical fiber through-cabin sealing connector |
| CN204788771U (en) * | 2015-07-16 | 2015-11-18 | 吉林大学 | Fiber grating osmometer does not have gluey mechanical seal structure |
-
2015
- 2015-07-16 CN CN201510415707.3A patent/CN104931190B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5185844A (en) * | 1991-07-29 | 1993-02-09 | At&T Bell Laboratories | Closure for optical fiber connective arrangements and method of providing same |
| CN201327988Y (en) * | 2008-12-17 | 2009-10-14 | 古叶辉 | Pre-insulated butt pipe |
| CN101545817A (en) * | 2009-04-30 | 2009-09-30 | 山东省科学院激光研究所 | Fiber grating osmotic pressure sensor with low measuring range |
| CN102103028A (en) * | 2009-12-16 | 2011-06-22 | 中国石油天然气股份有限公司 | Method for sealing fiber pressure sensor |
| CN101915966A (en) * | 2010-07-14 | 2010-12-15 | 中国科学院半导体研究所 | Downhole optical cable connecting and protecting device |
| CN102109643A (en) * | 2011-02-18 | 2011-06-29 | 深圳市特发信息光网科技股份有限公司 | Optical fiber quick coupling and splicing method thereof |
| CN104155726A (en) * | 2014-08-22 | 2014-11-19 | 北京卫星环境工程研究所 | High-air-tightness multi-core optical fiber through-cabin sealing connector |
| CN204788771U (en) * | 2015-07-16 | 2015-11-18 | 吉林大学 | Fiber grating osmometer does not have gluey mechanical seal structure |
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| CN104931190A (en) | 2015-09-23 |
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