CN204788771U - Fiber grating osmometer does not have gluey mechanical seal structure - Google Patents
Fiber grating osmometer does not have gluey mechanical seal structure Download PDFInfo
- Publication number
- CN204788771U CN204788771U CN201520512708.5U CN201520512708U CN204788771U CN 204788771 U CN204788771 U CN 204788771U CN 201520512708 U CN201520512708 U CN 201520512708U CN 204788771 U CN204788771 U CN 204788771U
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- China
- Prior art keywords
- nylon tube
- withstand voltage
- twisting
- osmometer
- bragg grating
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- Expired - Fee Related
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Abstract
The utility model discloses aim at overcoming fiber grating osmometer that prior art exists and use the marine glue to seal the problem that poor stability, sealed effect are not good, influence osmometer precision, provide a fiber grating osmometer does not have gluey mechanical seal structure, through the nylon tube, withstand voltage fast twist connect, the pyrocondensation pipe replaces traditional marine glue and does sealedly for the fiber grating osmometer, manages the effect of playing the support through metal -support. The nylon tube can be able to bear or endure 10Mpa's pressure and not produce serious deformation because of its special material, so use its protective case as optic fibre, the withstand voltage fast joint of twisting can be through the extrusion nylon tube to reach sealed effect, the pyrocondensation is effective in the butt joint of optical cable and nylon tube, and is firm reliable, hydraulic tong is used for extrudeing the metal -support pipe in order to reach sealed effect. The utility model discloses a mechanical seal structure can solve the present sealed sealing method's of glue the little shortcoming of poor, the withstand voltage scope of long term stability.
Description
Technical field
The utility model belongs to sensory field of optic fibre, is specifically related to the glue-free pure mechanical seal structure of a kind of fiber bragg grating osmometer.
Background technology
Osmometer is mainly used in measuring fluid for a long time, hole, dykes and dams, subway, the pressure at the places such as bridge.The shortcomings such as now, great majority all adopt traditional electric class osmometer, and it is low that traditional electrical class osmometer exists measuring accuracy, and water resistance is poor, and the life-span is short, anti-electromagnetic interference capability difference; Fiber bragg grating osmometer can overcome the shortcoming of traditional electrical class osmometer, has measuring accuracy high, and measurement range is large, the plurality of advantages such as water resistance is high, electromagnetism interference.But grating osmometer under light on the market, use marine glue to increase water proofing property, because marine glue is under long-time measurement, stability can reduce gradually because of glue itself, and the withstand voltage scope of marine glue is little, so be badly in need of the strong fiber bragg grating osmometer hermetically-sealed construction of a kind of reliable stability at present.
Utility model content
Technical problem to be solved in the utility model is that the fiber bragg grating osmometer overcoming prior art existence uses marine glue to seal the problem that poor stability, sealing effectiveness are not good, affect osmometer precision, provides a kind of fiber bragg grating osmometer glue-free mechanical hermetically-sealed construction.
For solving the problems of the technologies described above, the utility model adopts following technical scheme to realize:
A kind of fiber bragg grating osmometer glue-free mechanical hermetically-sealed construction, comprise a fiber bragg grating osmometer be made up of fiber grating, it is characterized in that a withstand voltage fast one-way joint of twisting is docked by screw thread with fiber bragg grating osmometer, the withstand voltage fast other end of twisting one-way joint is screw nut structure, by withstand voltage fast screw nut structure of twisting one-way joint, one end of first paragraph nylon tube sealing is arranged on the withstand voltage fast other end of twisting one-way joint, the optical fiber that fiber bragg grating osmometer stretches out passes from withstand voltage fast twisting one-way joint, for the fused fiber splice of two sections of fiber alignments is disposed in first paragraph nylon tube, the other end of first paragraph nylon tube and two ends are that withstand voltage fast one end of twisting bidirectional joint of screw nut structure is tightly connected, the withstand voltage fast other end of twisting bidirectional joint is tightly connected second segment nylon tube, optical fiber continues to pass from second segment nylon tube, on optical cable, cover has metallic support pipe, the method of metal crimp is adopted second segment nylon tube and optical cable to be crimped together, metallic support pipe and its outer corresponding second segment nylon tube are carried out mechanically deform thus form distortion place, distortion place reaches crush seal effect,
Further technical scheme comprises:
Marine glue is full of in first paragraph nylon tube;
Distortion place cover has heat-shrink tube to do outer protection.
Compared with prior art the beneficial effects of the utility model are:
What now most of fiber bragg grating osmometer tail optical fiber fiber place still adopted on the market is the bonding guarantee sealing property relying on marine glue; because marine glue self-characteristic causes this kind of withstand voltage scope of method less; long-time stability are poor; the glue-free pure mechanical seal structure of a kind of fiber bragg grating osmometer described in the utility model; the pressure-resistant seal problem of fiber bragg grating osmometer under water under 10Mpa environment is solved completely by the mode of mechanical presses, and the protection sealing problem of disposable solution fusion point.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the structural representation of the glue-free pure mechanical seal structure of a kind of fiber bragg grating osmometer described in the utility model.
In figure: 1, withstand voltagely fast twist one-way joint, 2, withstand voltagely twist bidirectional joint soon, 3, second segment nylon tube, 4, fiber bragg grating osmometer, 5, metallic support pipe, 6, distortion place, 7, heat-shrink tube, 8, optical cable, 9, fused fiber splice place, 10, first paragraph nylon tube, 11, optical fiber.
Embodiment
Below in conjunction with accompanying drawing, the utility model is explained in detail:
A kind of fiber bragg grating osmometer glue-free mechanical hermetically-sealed construction, comprise a fiber bragg grating osmometer be made up of fiber grating 4, it is characterized in that a withstand voltage fast one-way joint 1 of twisting is docked by screw thread with fiber bragg grating osmometer 4, the withstand voltage fast other end of twisting one-way joint 1 is screw nut structure, by withstand voltage fast screw nut structure of twisting one-way joint 1, one end of first paragraph nylon tube 10 sealing is arranged on the withstand voltage fast other end of twisting one-way joint 1, the optical fiber 11 that fiber bragg grating osmometer 4 stretches out passes from withstand voltage fast twisting one-way joint, fused fiber splice 9 is disposed in first paragraph nylon tube 10, the other end of first paragraph nylon tube 10 and two ends are that withstand voltage fast one end of twisting bidirectional joint 2 of screw nut structure is tightly connected, the withstand voltage fast other end of twisting bidirectional joint 2 is tightly connected second segment nylon tube 3, optical fiber 11 continues to pass from second segment nylon tube 3, on optical cable 8, cover has metallic support pipe 5, the method of metal crimp is adopted second segment nylon tube 3 and optical cable 8 to be crimped together, metallic support pipe 5 and its outer corresponding second segment nylon tube 3 are carried out mechanically deform thus form distortion place 6, distortion place 6 reaches crush seal effect, marine glue is full of in first paragraph nylon tube 10, heat-shrink tube 7 is had to do outer protection in distortion place 6 outer cover.
The operating process using a kind of fiber bragg grating osmometer glue-free mechanical hermetically-sealed construction described in the utility model to seal the optical fiber 11 in fiber bragg grating osmometer 4 and to protect is as follows:
The first step, is screwed in one end of fiber bragg grating osmometer 4 fiber by withstand voltage fast one end of twisting one-way joint 1;
Second step, to first paragraph nylon tube 10 carry out 80 degree softening after be enclosed within and withstand voltagely twist on one-way joint 1 soon;
3rd step, locked withstand voltage fast sealing nut of twisting one-way joint 1;
4th step, cuts down one section and prepares welding by the optical fiber in first paragraph nylon tube 10;
5th step, welding success, goes to protection;
6th step, adds that at fused fiber splice place 9 then resin plate plate fills ultraviolet glue in order to strengthen fixed fiber weld 9, after ultraviolet glue solidification, whole first paragraph nylon tube 10 two ends cavity and resin plate is full of 704 marine glues;
7th step; first paragraph nylon tube 10 and second segment nylon tube 3 to be docked and locked by withstand voltage fast bidirectional joint 2 of twisting, so far protect two easy points revealed by withstand voltage fast one-way joint 1 of twisting respectively with withstand voltage fast bidirectional joint 2 of twisting: the fused fiber splice place 9 that the tail end fiber place of fiber bragg grating osmometer 4 and optical fiber extend.
8th step; fiber bragg grating osmometer 4 root pressure larger part is by after above step protection; as shown in Figure 1; first metallic support pipe 5 is enclosed within second segment nylon tube 3; optical fiber pierces into second segment nylon tube 3; adopt hydraulic tongs by metallic support pipe 5 compressive strain thus form distortion place 6, reaching the effect of crush seal, finally do outer protection with heat-shrink tube 7.
Claims (3)
1. a fiber bragg grating osmometer glue-free mechanical hermetically-sealed construction, comprise a fiber bragg grating osmometer be made up of fiber grating (4), it is characterized in that a withstand voltage fast one-way joint (1) of twisting is docked by screw thread with fiber bragg grating osmometer (4), the withstand voltage fast other end of twisting one-way joint (1) is screw nut structure, by withstand voltage fast screw nut structure of twisting one-way joint (1), one end of first paragraph nylon tube (10) sealing is arranged on the withstand voltage fast other end of twisting one-way joint (1), the optical fiber (11) that fiber bragg grating osmometer (4) stretches out passes from withstand voltage fast twisting one-way joint (1), fused fiber splice place (9) is placed in first paragraph nylon tube (10), the other end of first paragraph nylon tube (10) and two ends are that withstand voltage fast one end of twisting bidirectional joint (2) of screw nut structure is tightly connected, the withstand voltage fast other end of twisting bidirectional joint (2) is tightly connected second segment nylon tube (3), optical fiber (11) continues to pass from second segment nylon tube (3), metallic support pipe (5) is had at the upper cover of optical cable (8), the method of metal crimp is adopted second segment nylon tube (3) and optical cable (8) to be crimped together, metallic support pipe (5) and its outer corresponding second segment nylon tube (3) are carried out mechanically deform thus form distortion place (6), distortion place (6) reaches crush seal effect.
2., according to the said a kind of fiber bragg grating osmometer glue-free mechanical hermetically-sealed construction of claim 1, it is characterized in that being full of marine glue in first paragraph nylon tube (10).
3., according to claim 1 or 2 said fiber bragg grating osmometer glue-free mechanical hermetically-sealed construction, it is characterized in that distortion place (6) outer cover has heat-shrink tube (7) to do outer protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512708.5U CN204788771U (en) | 2015-07-16 | 2015-07-16 | Fiber grating osmometer does not have gluey mechanical seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512708.5U CN204788771U (en) | 2015-07-16 | 2015-07-16 | Fiber grating osmometer does not have gluey mechanical seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204788771U true CN204788771U (en) | 2015-11-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520512708.5U Expired - Fee Related CN204788771U (en) | 2015-07-16 | 2015-07-16 | Fiber grating osmometer does not have gluey mechanical seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204788771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931190A (en) * | 2015-07-16 | 2015-09-23 | 吉林大学 | Non-glue mechanical sealing structure of fiber grating osmometer |
-
2015
- 2015-07-16 CN CN201520512708.5U patent/CN204788771U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931190A (en) * | 2015-07-16 | 2015-09-23 | 吉林大学 | Non-glue mechanical sealing structure of fiber grating osmometer |
| CN104931190B (en) * | 2015-07-16 | 2018-03-09 | 吉林大学 | A kind of fiber bragg grating osmometer glue-free mechanical sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |