CN100573069C - The fire inspection optical fiber that detects boiler temperature passes light beam and preparation method thereof - Google Patents
The fire inspection optical fiber that detects boiler temperature passes light beam and preparation method thereof Download PDFInfo
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- CN100573069C CN100573069C CNB200810114880XA CN200810114880A CN100573069C CN 100573069 C CN100573069 C CN 100573069C CN B200810114880X A CNB200810114880X A CN B200810114880XA CN 200810114880 A CN200810114880 A CN 200810114880A CN 100573069 C CN100573069 C CN 100573069C
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- Prior art keywords
- light transmitting
- transmitting fiber
- temperature
- coating device
- metal coating
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 21
- 238000007689 inspection Methods 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 239000000835 fiber Substances 0.000 claims abstract description 65
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 238000000576 coating method Methods 0.000 claims abstract description 29
- 239000011521 glass Substances 0.000 claims abstract description 28
- 239000000853 adhesive Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000011162 core material Substances 0.000 description 8
- 229920006335 epoxy glue Polymers 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000382 optic material Substances 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Images
Abstract
The fire inspection optical fiber that detects boiler temperature passes light beam and preparation method thereof and relates to electric power, oil and chemical field, is higher than 380 ℃ of inoperable problems down to solve ordinary optic fibre biography light beam.The present invention packs the two ends of the naked silk of loose a branch of light transmitting fiber in the glass tube, high temperature furnace is put at two ends respectively be heated to 650 ℃-655 ℃, glass tube is softening earlier in this process, the light transmitting fiber covering is softening but the light transmitting fiber core is not softening subsequently, the naked silk of light transmitting fiber tightened up be one, continue insulation after 15-20 minute air cooling to room temperature; The glass tube softening temperature is 600 ℃-650 ℃.To tighten up again to the naked silk of the light transmitting fiber of one termination, two ends and bond together with high-temperature resistant structural adhesive and metal coating device, after the naked silk of light transmitting fiber end surface grinding, polishing, fix after being enclosed within the metal coating device skin that is bonded with the naked silk of light transmitting fiber with the metal coating device of an end band collector lens; High-temperature resistant structural adhesive heatproof temperature is more than 780 ℃.The present invention can monitor boiler temperature down for 500 ℃-600 ℃ at high temperature.
Description
Technical field
The present invention relates to electric power, oil and chemical industry and be used for detecting and controlling the boiler temperature device.
Background technology
Along with the high speed development of Chinese national economy, increasing occasion need be used optical fiber.The characteristics of optical fiber are anti-electromagnetic interference (EMI), and are corrosion-resistant, soft flexible etc., especially in more apparent its advantages of industry such as electric power, oil, chemical industry.The optical fiber that the present invention uses is glass optical fiber, the transmitance of glass optical fiber goods by the clarity of the optical glass of fiber optic materials own, core skin interface in conjunction with decisions such as the quality of finish of situation and light beam end face and assembly technologies.
With the power plant is example, furnace puff takes place when preventing that dangerous operating mode from appearring in boiler combustion and causes serious accident, now extensively makes the monitoring of optical fiber fire monitor equipment.Now general detection method is that the fibre bundle termination that an end has a collector lens is placed near the boiler position, is used to gather the signal of flame; The other end is placed on the monitoring instrument position, is used for output signal.The method for making that simple glass optical fiber passes light beam is that the two ends with the naked silk of loose a branch of light transmitting fiber bond together with epoxide-resin glue and become one (as Fig. 1; 1 is the metal coating device in Fig. 1; 2 is the naked silk of a branch of light transmitting fiber; 3 is protection metal pipe); and in order to reduce the absorption of glue-line to light; the refractive index of the glue that adopts can not be higher than the refractive index of the naked silk of light transmitting fiber covering, so just limited the range of choice of glue.At present, adopt the bonding glass optical fiber of epoxy glue to pass light beam and surpassing under 380 ℃ of situations, epoxy glue will volatilize, and causes that the glass optical fiber termination is loose, the end face out-of-flatness, the optical fiber fracture of wire occurs, makes the transmitance of fibre bundle reduce greatly.And surpassed 500 ℃ in the temperature of the optic fibre end present position of boiler high temperature end, adopt the bonding glass optical fiber of epoxy glue to pass light beam and be not suitable as pick-up unit.
Summary of the invention
Therefore the objective of the invention is to make a kind of optical fiber that does not use tackifier and the naked silk of a branch of light transmitting fiber is bonded together and pass light beam, can under 500 ℃ of-600 ℃ of situations of high temperature, monitor boiler temperature.
A kind of fire inspection optical fiber that detects boiler temperature provided by the invention passes light beam, comprise the naked silk 2 of a branch of light transmitting fiber, the metal coating device 1 that the naked silk of light transmitting fiber 2 two ends are with, and the protection metal pipe 3 that outside the naked silk of light transmitting fiber 2 middle parts, is with, it is characterized in that, between naked silk 2 of described light transmitting fiber and metal coating device 1, glass tube 4 is set also, and metal coating device 1 skin at one end is with the metal coating device 5 of an end band collector lens; Described glass tube softening temperature is 600 ℃-650 ℃.
The fire inspection optical fiber of described detection boiler temperature passes the preparation method of light beam, it is characterized in that, may further comprise the steps:
Packed in the glass tube in the two ends of the naked silk of loose a branch of light transmitting fiber, high temperature furnace is put at two ends respectively be heated to 650 ℃-655 ℃, glass tube is softening earlier in this process, the light transmitting fiber covering is softening but the light transmitting fiber core is not softening subsequently, the naked silk of light transmitting fiber tightened up become one, continue insulation 15-20 minute then air cooling to room temperature; Described glass tube softening temperature is 600 ℃-650 ℃.
To tighten up again to the naked silk of the light transmitting fiber of one termination, two ends and bond together with high-temperature resistant structural adhesive and metal coating device, after the naked silk of light transmitting fiber end surface grinding, polishing, fix after being enclosed within the metal coating device skin that is bonded with the naked silk of light transmitting fiber with the metal coating device of an end band collector lens; Described high-temperature resistant structural adhesive heatproof temperature is more than 780 ℃.(as Fig. 2, in Fig. 24 is glass tube, and 5 is the metal coating device of an end band collector lens).
The principle of the invention is according to the softening point of the light transmitting fiber core softening point a little more than the light transmitting fiber covering.The naked silk of usually said light transmitting fiber promptly is made up of light transmitting fiber core and the light transmitting fiber covering that wraps in its outside, the principal ingredient of core and covering all is a glass, the refractive index of core material is greater than the refractive index of clad material, and the softening point of core is 670 ℃-680 ℃, a little more than the softening point of covering.Therefore by soften glass pipe and light transmitting fiber covering, the naked silk of a branch of light transmitting fiber tightened up be one, and do not need epoxy glue bonding, like this optic fibre end can not occur after surpassing 380 ℃ that optic fibre end is loose, the phenomenon of end face out-of-flatness and fracture of wire, the transmitance of fibre bundle can not be affected, just can under 500 ℃ of-600 ℃ of situations of high temperature, normally use the monitoring boiler temperature.
Description of drawings:
Fig. 1: ordinary optic fibre passes the beam arrangement synoptic diagram;
Fig. 2: fire inspection optical fiber passes the beam arrangement synoptic diagram.
Embodiment
A kind of fire inspection optical fiber that detects boiler temperature passes light beam; comprise the naked silk 2 of a branch of light transmitting fiber; the metal coating device 1 that the naked silk of light transmitting fiber 2 two ends are with; and the protection metal pipe 3 that outside the naked silk 2 of light transmitting fiber, is with; it is characterized in that; between naked silk of described light transmitting fiber 2 and metal coating device 1, glass tube 4 is set also, and at one end is enclosed within metal coating device 1 skin with the metal coating device 5 of collector lens.
The naked silk of light transmitting fiber is the naked silk of glass optical waveguide fibre, and the naked filament diameter of single glass optical waveguide fibre is Φ 50 μ m.Described glass tube composition is a silicate, and length is 10mm, can soften in 600 ℃ of-650 ℃ of scopes.
Described high-temperature resistant structural adhesive is a TS812 thermal structure glue, 780 ℃ of heatproofs.
Packed in the glass tube in the two ends of the naked silk of loose a branch of light transmitting fiber,-655 ℃ of high temperature furnace heating 15-20 minute to 650 ℃ are put at two ends respectively, glass tube is softening earlier in this process, the light transmitting fiber covering is softening but the light transmitting fiber core is not softening subsequently, the naked silk of light transmitting fiber tightened up become one, continue insulation 15-20 minute then air cooling to room temperature;
To tighten up again to the naked silk of the light transmitting fiber of one termination, two ends and bond together with high-temperature resistant structural adhesive and metal coating device; after the naked silk of light transmitting fiber end surface grinding, polishing, be enclosed within the metal coating device skin that is bonded with naked of light transmitting fiber with the metal coating device of an end band collector lens after jackscrew fix.
Claims (2)
1. a fire inspection optical fiber that detects boiler temperature passes light beam, comprise the naked silk of a branch of light transmitting fiber (2), the metal coating device (1) that the naked silk of light transmitting fiber (2) two ends are with, and the protection metal pipe (3) that outside the naked silk of light transmitting fiber (2) middle part, is with, it is characterized in that: between naked silk of described light transmitting fiber (2) and metal coating device (1), glass tube (4) is set also, and metal coating device (1) skin at one end is with the metal coating device (5) of an end band collector lens; Described glass tube (4) softening temperature is 600 ℃-650 ℃; The naked silk of light transmitting fiber termination, two ends bonds together with high-temperature resistant structural adhesive and metal coating device, and described high-temperature resistant structural adhesive heatproof temperature is more than 780 ℃; Be enclosed within behind the metal coating device skin that is bonded with the naked silk of light transmitting fiber fixing with the metal coating device of an end band collector lens.
2. the fire inspection optical fiber of detection boiler temperature according to claim 1 passes the preparation method of light beam, it is characterized in that, may further comprise the steps:
Packed in the glass tube in the two ends of the naked silk of loose a branch of light transmitting fiber, high temperature furnace is put at two ends respectively be heated to 650 ℃-655 ℃, glass tube is softening earlier in this process, the light transmitting fiber covering is softening but the light transmitting fiber core is not softening subsequently, the naked silk of light transmitting fiber tightened up become one, continue insulation 15-20 minute then air cooling to room temperature; Described glass tube softening temperature is 600 ℃-650 ℃;
To tighten up again to the naked silk of the light transmitting fiber of one termination, two ends and bond together with high-temperature resistant structural adhesive and metal coating device, after the naked silk of light transmitting fiber end surface grinding, polishing, fix after being enclosed within the metal coating device skin that is bonded with the naked silk of light transmitting fiber with the metal coating device of an end band collector lens; Described high-temperature resistant structural adhesive heatproof temperature is more than 780 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200810114880XA CN100573069C (en) | 2008-06-13 | 2008-06-13 | The fire inspection optical fiber that detects boiler temperature passes light beam and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200810114880XA CN100573069C (en) | 2008-06-13 | 2008-06-13 | The fire inspection optical fiber that detects boiler temperature passes light beam and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101290251A CN101290251A (en) | 2008-10-22 |
| CN100573069C true CN100573069C (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200810114880XA Expired - Fee Related CN100573069C (en) | 2008-06-13 | 2008-06-13 | The fire inspection optical fiber that detects boiler temperature passes light beam and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100573069C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822389A (en) * | 1987-08-07 | 1989-04-18 | Corning Glass Works | Capillary splice method |
-
2008
- 2008-06-13 CN CNB200810114880XA patent/CN100573069C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822389A (en) * | 1987-08-07 | 1989-04-18 | Corning Glass Works | Capillary splice method |
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| Publication number | Publication date |
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| CN101290251A (en) | 2008-10-22 |
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Owner name: BEIJING SCITLION TECHNOLOGY CO.,LTD. Free format text: FORMER OWNER: BEIJING GLASS RESEARCH INSTITUTE R+D CENTRE Effective date: 20130206 |
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Effective date of registration: 20130206 Address after: 101111 Beijing Tongzhou District light mechanical and electrical integration industrial base, four light street, No. 5 Patentee after: Beijing Scitlion Technology Co., Ltd. Address before: 101111 Tongzhou District City, Zhongguancun science and Technology Park, Tongzhou Industrial Park, the integration of optical and electrical integration of industrial base, Xing Guang street, No. four, No. 5 Patentee before: Beijing Glass Research Institute R&d Centre |
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| C56 | Change in the name or address of the patentee | ||
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Address after: 101111 Beijing Tongzhou District light mechanical and electrical integration industrial base, four light street, No. 5 Patentee after: Beijing Polytron Technologies Inc Address before: 101111 Beijing Tongzhou District light mechanical and electrical integration industrial base, four light street, No. 5 Patentee before: Beijing Scitlion Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20180613 |
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| CF01 | Termination of patent right due to non-payment of annual fee |