CN110456469B - Optical cable breakage simulation component for optical cable production - Google Patents
Optical cable breakage simulation component for optical cable production Download PDFInfo
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- CN110456469B CN110456469B CN201910586660.5A CN201910586660A CN110456469B CN 110456469 B CN110456469 B CN 110456469B CN 201910586660 A CN201910586660 A CN 201910586660A CN 110456469 B CN110456469 B CN 110456469B
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- optical cable
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- optical fiber
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4486—Protective covering
Abstract
The invention discloses an optical cable breakage simulation component for optical cable production, which comprises a simulation optical cable piece, a temperature and humidity sensor, a pressure sensor and a connecting piece, wherein the simulation optical cable piece is connected with the temperature and humidity sensor through the connecting piece; the simulation optical cable piece comprises a simulation optical cable main body and a pair of sealing heads positioned at two ends of the simulation optical cable main body; the analog optical cable main body comprises a second optical fiber, and an outer cladding layer is sleeved outside the outer surface of the second optical fiber; the connecting piece comprises a fastening ring sleeved on the outer surface of the outer covering layer and a fixing piece for connecting the fastening ring and the simulation optical cable piece, and the fastening ring is provided with a clamping part and a clamped part matched with the clamping part; the two ends of the simulation optical cable main body are provided with sealing blocks connected with the outer cladding, and the sealing blocks are provided with through holes for the second optical fibers to pass through conveniently. The optical fiber bending tester is used for detecting the temperature and humidity of an optical cable or the tension generated by bending and the optical performance of a second optical fiber when the optical fiber is bent and in a high-temperature and high-humidity area; so that the first optical fiber can be evaluated in the field or on-line by detecting the simulated fiber optic cable member without disassembling the fiber optic cable.
Description
The application is a divisional application with application date of 2017, 10 and 20, application number of 201710985127.7 and invented name of 'production process of optical cable'.
Technical Field
The invention relates to the field of manufacturing of optical cables, in particular to a production process of an optical cable.
Background
With the continuous development of optical communication technology and industry, the optical sensing technology replaces the traditional electronic sensing technology and is widely applied to various industries such as coal mine, electric power, fire safety, civil field and the like. Compared with the traditional electronic sensor, the optical fiber sensor has a series of advantages: high sensitivity, corrosion resistance, large transmission capacity, strong anti-electromagnetic interference capability, simple structure, small volume, light weight, low power consumption and the like. Optical fiber cables (optical fiber cables) are manufactured to meet optical, mechanical, or environmental performance specifications and are telecommunication cable assemblies that utilize one or more optical fibers disposed in a surrounding jacket as the transmission medium and that may be used individually or in groups. The optical cable is mainly composed of optical fiber, plastic protective sleeve and plastic sheath, and has no noble metals such as gold, silver, copper and the like, and generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers according to a certain mode to form a cable core, is coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission. The optical cable is a cable formed by subjecting an optical fiber (optical transmission carrier) to a certain process. The basic structure of the optical cable generally comprises a cable core, a reinforcing steel wire, a filler, a sheath and other parts, and further comprises an organic solvent prevention layer, a buffer layer, an insulated metal wire and other components according to requirements.
The existing optical cable is easy to generate optical fiber hydrogen loss when being used in some areas with high temperature and high humidity, temperature and humidity control equipment is generally required to be additionally arranged in a certain area, but the most important problem is that the damage condition of the optical cable in the local optical fiber under the severe environment cannot be evaluated; meanwhile, the optical cable is often bent in the use process, the performance of the optical cable is influenced by bending beyond a certain limit, the damage condition can be evaluated on site, and the service life of the optical cable is also directly influenced.
Disclosure of Invention
Aiming at the problems, the invention provides a production process of an optical cable, which solves the defect that the existing optical cable cannot evaluate the hydrogen loss and the damage after breakage of the optical fiber on site.
The technical scheme adopted by the invention is as follows:
a production process of an optical cable comprises the following steps:
1) a wire releasing procedure: placing the first optical fibers on an active pay-off rack respectively, and paying off the first optical fibers;
2) a fiber paste coating procedure: leading the discharged first optical fiber to pass through fiber paste coating equipment to coat fiber paste;
3) an injection molding process: performing extrusion molding on polyvinyl chloride plastic, and performing injection molding on the outer surface of the first optical fiber to cover polyvinyl chloride to form a sheath to obtain an optical cable intermediate;
4) production process of the optical cable breakage simulation part: respectively placing the second optical fibers on an active pay-off rack, paying off the second optical fibers, cutting off the second optical fibers, and coating the cut-off second optical fibers with fiber paste by fiber paste coating equipment; fixing a temperature and humidity sensor and a pressure sensor on one side of the second optical fiber coated with the fiber paste, wherein the temperature and humidity sensor and the pressure sensor are respectively placed in parallel with the outside of the second optical fiber; polyvinyl chloride is injected and covered on the outer surfaces of the second optical fiber, the temperature and humidity sensor and the pressure sensor to form an outer cladding layer; cutting off the outer claddings at the two ends and exposing the second optical fiber ends at the two ends; filling the sealing block into the surfaces of the fiber pastes of the outer coatings at the two ends, and enabling the end of the second optical fiber to penetrate through the through hole; adhering an annular outer edge on the end face of the outer cladding, and filling the sealing pad head with the processed first groove and the second groove into the inner side of the annular outer edge; installing a sealing head outside the annular outer edge to obtain an optical cable breakage simulation part intermediate piece;
5) an installation procedure: one end of the fixing piece is adhered to the bottom of the middle piece of the simulation optical cable piece, and the other end of the fixing piece is adhered to the middle of the unfolded fastening ring; coating the fastening ring on the optical cable intermediate, and mutually fastening the fastening part and the fastened part to realize fixation to obtain an optical cable finished product;
the optical cable breakage simulation component in the step 4) comprises a simulation optical cable piece, a temperature and humidity sensor, a pressure sensor and a connecting piece; the simulation optical cable piece comprises a simulation optical cable main body and a pair of sealing heads positioned at two ends of the simulation optical cable main body; the analog optical cable main body comprises a second optical fiber, and an outer cladding layer is sleeved outside the outer surface of the second optical fiber; the temperature and humidity sensor and the pressure sensor are arranged in an outer covering layer at the lower end, a second optical fiber, a data line of the temperature and humidity sensor and a data line of the pressure sensor respectively extend out of two side end faces of the simulation optical cable main body, two ends of the simulation optical cable part are provided with outward-protruding annular outer edges, the annular outer edges are in threaded fit with the sealing head, a silica gel pad head is arranged on the inner side of the annular outer edges, one end of the silica gel pad head is provided with an inward-concave arc surface, and the other end of the silica gel pad head is provided with a first groove matched with the second optical fiber and a second; the first optical fiber and the second optical fiber are the same optical fiber;
the connecting piece comprises a fastening ring sleeved on the outer surface of the outer cladding and a fixing piece for connecting the fastening ring and the simulation optical cable piece, and the fastening ring is provided with a buckling part and a clamped part matched with the buckling part; the two ends of the simulation optical cable main body are provided with sealing blocks connected with the outer cladding, and the sealing blocks are provided with through holes for the second optical fibers to pass through.
The optical cable is additionally provided with an optical cable breakage simulation component for simulating the first optical fiber and the sheath thereof, and a temperature and humidity sensor and a pressure sensor are additionally arranged in the simulation optical cable main body and used for detecting the temperature and humidity of the optical cable or the tension generated by bending when the optical cable is bent and is positioned in a high-temperature and high-humidity area, and the optical performance of the second optical fiber; so that the first optical fiber can be evaluated in the field or on-line by detecting the simulated fiber optic cable member without disassembling the fiber optic cable. The invention has simple production process and lower cost.
Optionally, the optical cable production process further includes a cooling process, where the cooling process is located after the injection molding process, and the cooling process is performed by: and blowing the surface of the sheath by using cold air to reduce the temperature of the outer surface of the sheath to normal temperature, thereby obtaining the cooled optical cable intermediate.
Optionally, the temperature of the cold air is 15 ± 5 ℃.
Optionally, the paying-off tension in the step 1) is 120 ± 10g respectively.
The dynamic viscosity of the fiber paste is greater than or equal to 4000 mpa-s.
Optionally, the paste has a flammability index of greater than or equal to 300 ℃.
Optionally, the bottom of the arc surface of the silica gel pad head is provided with a smooth circular platform; and the cambered surface peripheral wall of the silica gel pad head is provided with a convex friction increasing part.
Optionally, the fastening portion is a fastening block, and the fastened portion is a fastening slot.
The invention has the beneficial effects that: the optical cable is additionally provided with an optical cable breakage simulation component for simulating the first optical fiber and the sheath thereof, and a temperature and humidity sensor and a pressure sensor are additionally arranged in the simulation optical cable main body and used for detecting the temperature and humidity of the optical cable or the tension generated by bending when the optical cable is bent and is positioned in a high-temperature and high-humidity area, and the optical performance of the second optical fiber; so that the first optical fiber can be evaluated in the field or on-line by detecting the simulated fiber optic cable member without disassembling the fiber optic cable. The invention has simple production process and lower cost.
Description of the drawings:
fig. 1 is a flow chart of a process for producing an optical cable according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a fiber optic cable according to a first embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a cable breakage simulation member of the optical cable according to the first embodiment of the present invention;
fig. 4 is a schematic structural view of an end face of a silica gel pad of an optical cable according to a first embodiment of the present invention;
fig. 5 is a schematic view showing an unfolded structure of the fastening ring of the optical cable according to the first embodiment of the present invention.
The figures are numbered:
1. a first optical fiber; 2. a sheath; 3. an optical cable breakage simulation component; 4. simulating an optical cable piece; 5. a temperature and humidity sensor; 6. a pressure sensor; 7. simulating a subject; 8. a sealing head; 9. fiber paste; 10. a second optical fiber; 11. an outer cladding; 12. a data line; 13. an annular outer rim; 14. a silica gel pad head; 15. a first groove; 16. a second groove; 17. a sealing block; 18. a fastening ring; 19. a fixing member; 20. a fastening part; 21. a clamped part; 22. a through hole; 23. a circular platform; 24. a friction increasing member; 25. a connecting member.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
The dynamic viscosity of the paste of the present invention is defined as D50S at 25 deg.C-1The data under the conditions of (1).
The first embodiment is as follows: the invention discloses a production process of an optical cable (shown in the attached figures 1, 2, 3, 4 and 5), which comprises the following steps:
1) a wire releasing procedure: respectively placing the first optical fibers 1 on an active pay-off rack, paying off the first optical fibers 1, wherein the pay-off tension is 120 +/-10 g;
2) a fiber paste coating procedure: passing the discharged first optical fiber 1 through a fiber paste 9 coating device to coat the fiber paste 9;
3) an injection molding process: performing extrusion molding on polyvinyl chloride plastic, and performing injection molding on the outer surface of the first optical fiber 1 to cover polyvinyl chloride to form a sheath 2, so as to obtain an optical cable intermediate;
4) a cooling process: blowing the surface of the sheath 2 by using cold air at 15 +/-5 ℃ to reduce the temperature of the outer surface of the sheath 2 to normal temperature, thereby obtaining a cooled optical cable intermediate;
5) production process of the optical cable breakage simulation part: respectively placing the second optical fibers 10 on an active pay-off rack, paying off the second optical fibers 10, cutting off the second optical fibers 10, and coating the fiber paste 9 on the cut-off second optical fibers 10 by fiber paste 9 coating equipment; fixing a temperature and humidity sensor 5 and a pressure sensor 6 on one side of a second optical fiber 10 coated with fiber paste 9, wherein the temperature and humidity sensor 5 and the pressure sensor 6 are respectively placed in parallel with the outside of the second optical fiber 10; the second optical fiber 10, the temperature and humidity sensor 5 and the pressure sensor 6 are coated with polyvinyl chloride in an injection molding manner to form an outer cladding layer 11; cutting off the outer claddings 11 at the two ends and exposing the ends of the second optical fiber 10 at the two ends; filling the sealing block 17 into the surfaces of the fiber pastes 9 of the outer coatings 11 at the two ends, and enabling the end of the second optical fiber 10 to pass through the through hole 22; adhering an annular outer edge 13 on the end face of the outer cladding 11, and filling the inner side of the annular outer edge 13 with a sealing pad head with a first groove 15 and a second groove 16 which are processed; installing a sealing head 8 outside the annular outer edge 13 to obtain an optical cable breakage simulation component 3 intermediate part;
6) an installation procedure: the fixing member 19 is adhered at one end to the bottom of the middle member of the analog optical cable member 4 and at the other end to the middle of the unfolded fastening ring 18; the fastening ring 18 is coated on the optical cable intermediate, and the buckling part 20 and the buckled part 21 are buckled with each other to realize fixation, so that an optical cable finished product is obtained;
the optical cable breakage simulation component 3 comprises a simulation optical cable piece 4, a temperature and humidity sensor 5, a pressure sensor 6 and a connecting piece 25; the simulation optical cable piece 4 comprises a simulation optical cable main body and a pair of sealing heads 8 positioned at two ends of the simulation optical cable main body; the analog optical cable main body comprises a second optical fiber 10, and an outer cladding 11 is sleeved outside the outer surface of the second optical fiber 10; the temperature and humidity sensor 5 and the pressure sensor 6 are installed in an outer cladding layer 11 at the lower end, the second optical fiber 10, a data line 12 of the temperature and humidity sensor 5 and a data line 12 of the pressure sensor 6 respectively extend out of two side end faces of the simulation optical cable main body, two ends of the simulation optical cable part 4 are provided with outward-protruding annular outer edges 13, the annular outer edges 13 are in threaded fit with the sealing head 8, a silica gel pad head 14 is installed on the inner side of each annular outer edge 13, one end of each silica gel pad head 14 is provided with an inward-concave arc face, and the other end of each silica gel pad head is provided with a first groove 15 matched with the second optical fiber 10 and a second groove 16; the first optical fiber 1 and the second optical fiber 10 are the same optical fiber;
the connecting piece 25 comprises a fastening ring 18 which is sleeved on the outer surface of the outer cladding 11, and a fixing piece 19 which is used for connecting the fastening ring 18 and the analog optical cable piece 4, wherein a buckling part 20 and a buckled part 2120 which is matched with the buckling part 20 are arranged on the fastening ring 18; the two ends of the analog optical cable main body are provided with sealing blocks 17 connected with the outer cladding 11, and the sealing blocks 17 are provided with through holes 22 for the second optical fibers 10 to pass through.
The optical cable is additionally provided with an optical cable breakage simulation part 3 for simulating a first optical fiber 1 and a sheath 2 thereof, and a temperature and humidity sensor 5 and a pressure sensor 6 are additionally arranged in a simulation optical cable main body and used for detecting the temperature and humidity of the optical cable or the tension generated by bending when the optical cable is bent and is positioned in a high-temperature and high-humidity area, and the optical performance of a second optical fiber 10; so that the damage condition of the first optical fiber 1 can be evaluated in the field or on line by detecting the analog cable member 4 without disassembling the cable. The invention has simple production process and lower cost.
Wherein the dynamic viscosity of the fiber paste 9 is greater than or equal to 4000 mpa-s. Wherein the flammability index of the paste 9 is greater than or equal to 300 ℃. Wherein, the bottom of the cambered surface of the silica gel pad head 14 is provided with a smooth circular platform 23; the cambered surface peripheral wall of the silica gel pad head 14 is provided with a convex friction increasing part 24. The fastening portion 20 is a fastening block, and the fastened portion 21 is a fastening groove.
When the optical cable damage monitoring device is implemented, according to a risk evaluation report of the use environment evaluation of the production process of the optical cable, an optical cable damage simulation part is additionally arranged at a high temperature, humidity or bending position, and during monitoring, the sealing head is detached, and the optical performance of the second optical fiber and the values of the temperature and humidity sensor and the pressure sensor are tested by using detection equipment.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (3)
1. An optical cable breakage simulation component for optical cable production is characterized by comprising a simulation optical cable piece, a temperature and humidity sensor, a pressure sensor and a connecting piece; the simulation optical cable piece comprises a simulation optical cable main body and a pair of sealing heads positioned at two ends of the simulation optical cable main body; the analog optical cable main body comprises a second optical fiber, and an outer cladding layer is sleeved outside the outer surface of the second optical fiber; the temperature and humidity sensor and the pressure sensor are arranged in an outer covering layer at the lower end, a second optical fiber, a data line of the temperature and humidity sensor and a data line of the pressure sensor respectively extend out of two side end faces of the simulation optical cable main body, two ends of the simulation optical cable part are provided with outward-protruding annular outer edges, the annular outer edges are in threaded fit with the sealing head, a silica gel pad head is arranged on the inner side of the annular outer edges, one end of the silica gel pad head is provided with an inward-concave arc surface, and the other end of the silica gel pad head is provided with a first groove matched with the second optical fiber and a second;
the connecting piece comprises a fastening ring sleeved on the outer surface of the outer cladding and a fixing piece for connecting the fastening ring and the simulation optical cable piece, and the fastening ring is provided with a buckling part and a clamped part matched with the buckling part; the two ends of the simulation optical cable main body are provided with sealing blocks connected with the outer cladding, and the sealing blocks are provided with through holes for the second optical fibers to pass through conveniently.
2. The optical cable breakage simulation part for optical cable production as claimed in claim 1, wherein the bottom of the cambered surface of the silica gel pad head is provided with a smooth circular platform; and the cambered surface peripheral wall of the silica gel pad head is provided with a convex friction increasing part.
3. The optical cable breakage simulation assembly for optical cable production as claimed in claim 1, wherein the buckling portion is a latch, and the buckled portion is a slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910586660.5A CN110456469B (en) | 2017-10-20 | 2017-10-20 | Optical cable breakage simulation component for optical cable production |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910586660.5A CN110456469B (en) | 2017-10-20 | 2017-10-20 | Optical cable breakage simulation component for optical cable production |
| CN201710985127.7A CN107783234B (en) | 2017-10-20 | 2017-10-20 | The production technology of optical cable |
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| CN201710985127.7A Division CN107783234B (en) | 2017-10-20 | 2017-10-20 | The production technology of optical cable |
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| CN110456469A CN110456469A (en) | 2019-11-15 |
| CN110456469B true CN110456469B (en) | 2020-06-12 |
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| CN201910586660.5A Active CN110456469B (en) | 2017-10-20 | 2017-10-20 | Optical cable breakage simulation component for optical cable production |
| CN201710985127.7A Active CN107783234B (en) | 2017-10-20 | 2017-10-20 | The production technology of optical cable |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609645A (en) * | 2004-11-25 | 2005-04-27 | 长飞光纤光缆有限公司 | Mixed optical cable with sensing and communication function and producing method thereof |
| CN201765351U (en) * | 2010-05-18 | 2011-03-16 | 华北电力大学（保定） | Seawater temperature profile measuring optical cable based on FBG (fiber bragg grating) principle |
| CN105044864A (en) * | 2015-07-21 | 2015-11-11 | 江苏通光海洋光电科技有限公司 | Intelligent submarine cable with invisibly implanted sensing fiber in cable core insulating layer |
| CN105974544A (en) * | 2016-07-25 | 2016-09-28 | 长飞光纤光缆股份有限公司 | Sensing-communication composite optical cable |
| WO2017001826A1 (en) * | 2015-06-29 | 2017-01-05 | Optasense Holdings Limited | Monitoring of power cables with distributed fibre optic sensing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202196210U (en) * | 2011-08-11 | 2012-04-18 | 江苏亨通光电股份有限公司 | Multifunctional induction optical cable |
| CN205139433U (en) * | 2015-10-22 | 2016-04-06 | 中国船舶重工集团公司第七一五研究所 | A distributing type optical cable of meeting an emergency for monitoring of structure surface strain |
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2017
- 2017-10-20 CN CN201910586660.5A patent/CN110456469B/en active Active
- 2017-10-20 CN CN201710985127.7A patent/CN107783234B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609645A (en) * | 2004-11-25 | 2005-04-27 | 长飞光纤光缆有限公司 | Mixed optical cable with sensing and communication function and producing method thereof |
| CN201765351U (en) * | 2010-05-18 | 2011-03-16 | 华北电力大学（保定） | Seawater temperature profile measuring optical cable based on FBG (fiber bragg grating) principle |
| WO2017001826A1 (en) * | 2015-06-29 | 2017-01-05 | Optasense Holdings Limited | Monitoring of power cables with distributed fibre optic sensing |
| CN105044864A (en) * | 2015-07-21 | 2015-11-11 | 江苏通光海洋光电科技有限公司 | Intelligent submarine cable with invisibly implanted sensing fiber in cable core insulating layer |
| CN105974544A (en) * | 2016-07-25 | 2016-09-28 | 长飞光纤光缆股份有限公司 | Sensing-communication composite optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107783234A (en) | 2018-03-09 |
| CN110456469A (en) | 2019-11-15 |
| CN107783234B (en) | 2019-08-02 |
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