CN113607303B - Optical fiber packaging method and temperature measuring optical fiber - Google Patents
Optical fiber packaging method and temperature measuring optical fiber Download PDFInfo
- Publication number
- CN113607303B CN113607303B CN202110857001.8A CN202110857001A CN113607303B CN 113607303 B CN113607303 B CN 113607303B CN 202110857001 A CN202110857001 A CN 202110857001A CN 113607303 B CN113607303 B CN 113607303B
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- Prior art keywords
- optical fiber
- sleeve
- throwing
- throwing sleeve
- heat shrinkage
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 254
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 28
- 239000003292 glue Substances 0.000 claims abstract description 156
- 238000002347 injection Methods 0.000 claims abstract description 74
- 239000007924 injection Substances 0.000 claims abstract description 74
- 238000004804 winding Methods 0.000 claims abstract description 63
- 239000000523 sample Substances 0.000 claims abstract description 56
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 44
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 44
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 17
- 238000007711 solidification Methods 0.000 claims abstract description 12
- 230000008023 solidification Effects 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000003754 machining Methods 0.000 claims description 9
- 238000013007 heat curing Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 6
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 35
- 239000000463 material Substances 0.000 description 13
- 238000009529 body temperature measurement Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- URXNVXOMQQCBHS-UHFFFAOYSA-N naphthalene;sodium Chemical compound [Na].C1=CC=CC2=CC=CC=C21 URXNVXOMQQCBHS-UHFFFAOYSA-N 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- 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
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides an optical fiber packaging method and a temperature measuring optical fiber, which solve the problem that the use environment of the optical fiber is limited due to the fact that the self characteristics of the optical fiber are reduced by adopting chemical treatment to increase the adhesion of a polytetrafluoroethylene protective sleeve on the surface of the existing temperature measuring optical fiber. The method comprises the following steps: 1) Processing a first throwing sleeve and a second throwing sleeve, wherein the first throwing sleeve is provided with a first through hole along the radial direction, and the second throwing sleeve is provided with a second through hole along the radial direction; 2) The first throwing sleeve is arranged at the tail part of the probe and the optical fiber, and the second throwing sleeve is arranged at the body part of the optical fiber; 3) Pouring high-temperature-resistant glue at the front end of the tail part of the optical fiber and the rear end of the body part of the optical fiber; 4) Heating the high-temperature-resistant glue to fill the first through hole and the second through hole, wherein one end of a glue injection structure formed after solidification is connected with the outer surface of the optical fiber, and the other end of the glue injection structure extends out of the outer wall of the casting tube to form a limiting piece; 5) Sleeving the heat-shrinkable tube on the first and second throwing-away sleeves, and heating the heat-shrinkable tube; 6) And winding the winding pipe on the heat shrinkage pipe and the second throwing sleeve.
Description
Technical Field
The invention relates to an optical fiber protection technology, in particular to an optical fiber packaging method and a temperature measuring optical fiber.
Background
Polytetrafluoroethylene (Poly tetra fluoroethylene, abbreviated as PTFE), commonly known as "plastic king", is a high molecular polymer prepared by polymerizing tetrafluoroethylene as a monomer. The polytetrafluoroethylene has extremely high lubricating properties and non-adhesive properties, and is the lowest friction coefficient of the solid material and the lowest surface tension of the solid material, and hardly adheres to any substance.
The temperature measuring optical fiber is mostly used in the environment with high temperature, low temperature, high voltage, high magnetic field and extremely high cleanliness, and because the polytetrafluoroethylene meets the use requirement in the harsh environment, the temperature measuring optical fiber adopts polytetrafluoroethylene material as a protective sleeve to be used in the harsh environment. In order to ensure the temperature measurement precision of the optical fiber, multiple layers of polytetrafluoroethylene materials are generally required to be adhered to each other to protect the optical fiber.
Because the polytetrafluoroethylene material has low surface energy and small adhesion capability, the polytetrafluoroethylene material has poor adhesion to other bonding substances, and generally needs to be bonded after special treatment. At present, polytetrafluoroethylene is chemically treated by adopting sodium naphthalene solution, and the fluorine-containing material of the sodium naphthalene solution is mainly prepared by chemically reacting corrosive liquid with PTFE plastic to remove part of fluorine atoms on the surface of the material, so that a carbonized layer and certain polar groups are left on the surface. Infrared spectra show that polar groups such as hydroxyl groups, carbonyl groups, unsaturated bonds and the like are introduced into the surface, and the groups can increase the surface energy, so that the adhesive force is increased. However, after the polytetrafluoroethylene is subjected to chemical treatment, the characteristics (hardness, ductility, color and the like) of the polytetrafluoroethylene can be changed, so that the use environment of the optical fiber is limited, and the use performance of the optical fiber is affected.
Disclosure of Invention
In order to solve the technical problem that the use environment of an optical fiber is limited due to the fact that the adhesion force is increased by adopting chemical treatment but the self characteristics (hardness, ductility, color and the like) are reduced in the polytetrafluoroethylene protective sleeve on the surface of the existing temperature measuring optical fiber, the invention provides an optical fiber packaging method and a temperature measuring optical fiber.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the optical fiber packaging method is characterized by comprising the following steps of:
1) Machining the first and second split sleeves
Processing a first throwing sleeve according to a probe connected with the tail of the optical fiber, wherein a first gap is formed in the first throwing sleeve along the axial direction, and a first through hole is formed in the front part of the first throwing sleeve along the radial direction;
machining a second split sleeve according to the optical fiber body, wherein a second gap is formed in the second split sleeve along the axial direction, and a second through hole is formed in the rear part of the second split sleeve along the radial direction;
the first throwing sleeve and the second throwing sleeve are made of polytetrafluoroethylene, and the outer diameter of the first throwing sleeve is larger than that of the second throwing sleeve;
2) Assembling a first split sleeve and a second split sleeve
Sleeving the first throwing sleeve on the probe and the tail part of the optical fiber, wherein the first throwing sleeve is in clearance fit with the tail part of the optical fiber;
meanwhile, a second throwing sleeve is sleeved on the optical fiber body, the second throwing sleeve is in clearance fit with the optical fiber body, the front end face of the first throwing sleeve is arranged adjacent to the rear end face of the second throwing sleeve, and the first through hole is positioned between the probe and the second through hole;
3) Glue injection
Pouring high-temperature-resistant glue at the front end of the tail part of the optical fiber through the first gap, and pouring high-temperature-resistant glue at the rear end of the body part of the optical fiber through the second gap;
4) Heat curing
Carrying out full-circle heating on the positions, corresponding to the poured high-temperature-resistant glue, on the first throwing sleeve and the second throwing sleeve, so that the high-temperature-resistant glue at the tail part of the optical fiber fills the first through hole, one end of a first glue injection structure formed after solidification is connected with the outer surface of the tail part of the optical fiber, and the other end of the first glue injection structure extends out of the outer wall of the first throwing sleeve to form a first limiting part;
and enabling the high-temperature-resistant glue of the optical fiber body to fill the second through hole, wherein one end of a second glue injection structure formed after curing is connected with the outer surface of the optical fiber body, and the other end of the second glue injection structure extends out of the outer wall of the second throwing sleeve to form a second limiting piece;
5) Installing heat shrinkage pipe
The heat shrinkage tube is sleeved at the front part of the first throwing sleeve and the rear part of the second throwing sleeve, then the heat shrinkage tube is heated, after the heat shrinkage tube is contracted, a first limiting groove matched with the first limiting piece and a second limiting groove matched with the second limiting piece are formed on the inner surface of the heat shrinkage tube, and the heat shrinkage tube is fixedly connected with the first throwing sleeve and the second throwing sleeve;
wherein, the heat shrinkage tube is made of polytetrafluoroethylene;
6) Mounting winding pipe
6.1 A barb structure or a groove structure is arranged on the outer surface of the tail part of the heat shrinkage tube, and high temperature resistant glue is smeared on the barb structure or the groove structure;
6.2 A groove structure or a barb structure matched with the barb structure or the groove structure is arranged on the inner surface of the tail part of the winding pipe, and the winding pipe is made of polytetrafluoroethylene;
6.3 Winding the winding pipe on the heat shrinkage pipe and the second throwing sleeve, coating the heat shrinkage pipe and the second throwing sleeve, and matching the barb structure with the groove structure;
6.4 Heating the high-temperature-resistant glue on the barb structure or the groove structure, and fixing the tail part of the winding pipe with the tail part of the heat-shrinkable pipe after the high-temperature-resistant glue is solidified, so as to finish the packaging of the optical fiber.
Further, in step 3), the high temperature resistant glue at the tail of the optical fiber and the first through hole are located on the same radial plane;
the high temperature resistant glue of the optical fiber body part and the second through hole are positioned on the same radial plane.
Further, in the step 1), the first through holes are 3 circles which are axially arranged along the first throwing sleeve, and each circle is 2 circles which are circumferentially arranged;
the second through holes are 3 circles which are axially arranged along the second throwing sleeve, and each circle is formed by 2 circles which are circumferentially arranged.
The invention provides a temperature measuring optical fiber manufactured by the optical fiber packaging method, which is characterized in that: the device comprises an optical fiber, a first throwing sleeve, a second throwing sleeve, a heat shrinkage tube and a winding tube;
the optical fiber comprises an optical fiber body part and an optical fiber tail part connected with the optical fiber body part, and the optical fiber tail part is connected with a probe;
the first casting sleeve is sleeved on the optical fiber tail and the probe, a plurality of first through holes are formed in the first casting sleeve in the radial direction, a first glue injection structure is arranged in the first through holes, one end of the first glue injection structure is connected with the outer surface of the optical fiber tail, and a first limiting piece extending out of the outer wall of the first casting sleeve is arranged at the other end of the first glue injection structure;
the second split sleeve is sleeved on the optical fiber body, a second glue injection structure is arranged in a second through hole in the second split sleeve, one end of the second glue injection structure is connected with the outer surface of the optical fiber body, and the other end of the second glue injection structure is provided with a second limiting piece extending out of the outer wall of the second split sleeve;
the heat-shrinkable tube is sleeved at the front part of the first throwing-away sleeve and the rear part of the second throwing-away sleeve, the inner surface of the heat-shrinkable tube is provided with a first limiting groove matched with the first limiting piece and a second limiting groove matched with the second limiting piece, the outer surface of the tail part of the heat-shrinkable tube is provided with a barb structure or a groove structure, and the barb structure or the groove structure is coated with high-temperature-resistant glue;
the winding pipe is sleeved on the heat shrinkage pipe and the second throwing sleeve, the heat shrinkage pipe and the second throwing sleeve are coated, and the inner surface of the tail part of the winding pipe is provided with a groove structure or a barb structure matched with the barb structure or the groove structure on the outer surface of the tail part of the heat shrinkage pipe.
Meanwhile, the invention also provides another optical fiber packaging method, which is characterized by comprising the following steps:
1) Machining the first and second split sleeves
Processing a first throwing sleeve according to a probe connected with the tail of the optical fiber, wherein a first gap is formed in the first throwing sleeve along the axial direction, and a first through hole is formed in the front part of the first throwing sleeve along the radial direction;
machining a second split sleeve according to the optical fiber body, wherein a second gap is formed in the second split sleeve along the axial direction, and a second through hole is formed in the rear part of the second split sleeve along the radial direction;
the first throwing sleeve and the second throwing sleeve are made of polytetrafluoroethylene, and the outer diameter of the first throwing sleeve is larger than that of the second throwing sleeve;
2) Assembling a first split sleeve and a second split sleeve
Sleeving the first throwing sleeve on the probe and the tail part of the optical fiber, wherein the first throwing sleeve is in clearance fit with the tail part of the optical fiber;
meanwhile, a second throwing sleeve is sleeved on the optical fiber body, the second throwing sleeve is in clearance fit with the optical fiber body, the front end face of the first throwing sleeve is arranged adjacent to the rear end face of the second throwing sleeve, and the first through hole is positioned between the probe and the second through hole;
3) Glue injection
Pouring high-temperature-resistant glue at the front end of the tail part of the optical fiber through the first gap, and pouring high-temperature-resistant glue at the rear end of the body part of the optical fiber through the second gap;
4) Installing heat shrinkage pipe
Sleeving the heat shrinkage sleeve on the front part of the first throwing sleeve and the rear part of the second throwing sleeve;
the heat shrinkage tube is made of polytetrafluoroethylene, and is provided with a third through hole matched with the first through hole and a fourth through hole matched with the second through hole along the radial direction;
5) Heat curing
Heating the heat shrinkage tube, shrinking the heat shrinkage tube, filling the first through hole and the third through hole with high-temperature-resistant glue at the tail part of the optical fiber, connecting one end of a third glue injection formed after solidification with the outer surface of the tail part of the optical fiber, and extending the other end of the third glue injection to the outer wall of the heat shrinkage tube to form a third limiting part;
and enabling the high-temperature-resistant glue of the optical fiber body to fill the second through hole and the fourth through hole, wherein one end of a fourth glue injection structure formed after solidification is connected with the outer surface of the optical fiber body, and the other end of the fourth glue injection structure extends out of the outer wall of the heat shrinkage tube to form a fourth limiting part, so that the heat shrinkage tube is fixedly connected with the first throwing sleeve and the second throwing sleeve;
6) Mounting winding pipe
6.1 Coating high-temperature-resistant glue on the third limiting piece on the outer wall of the heat-shrinkable tube;
6.2 A groove structure matched with the third limiting piece is formed in the inner surface of the tail part of the winding pipe, and the winding pipe is made of polytetrafluoroethylene;
6.3 Winding the winding pipe on the heat shrinkage pipe and the second throwing sleeve, coating the heat shrinkage pipe and the second throwing sleeve, and matching the third limiting piece with the groove structure;
6.4 Heating the high-temperature-resistant glue on the third limiting piece, and fixing the tail part of the winding pipe with the heat-shrinkable pipe after the high-temperature-resistant glue is solidified to finish the packaging of the optical fiber.
Further, in step 3), the high temperature resistant glue at the tail of the optical fiber and the first through hole are located on the same radial plane;
the high-temperature-resistant glue of the optical fiber body part and the second through hole are positioned on the same radial plane;
in the step 4), the number of the third through holes is equal to that of the first through holes, and the positions of the third through holes are in one-to-one correspondence; the number of the fourth through holes is equal to that of the second through holes, and the positions of the fourth through holes are in one-to-one correspondence.
Further, in the step 1), the first through holes are 3 circles which are axially arranged along the first throwing sleeve, and each circle is 2 circles which are circumferentially arranged;
the second through holes are 3 circles which are axially arranged along the second throwing sleeve, and each circle is formed by 2 circles which are circumferentially arranged.
The invention provides a temperature measuring optical fiber manufactured by the optical fiber packaging method, which is characterized in that: the device comprises an optical fiber, a first throwing sleeve, a second throwing sleeve, a heat shrinkage tube and a winding tube;
the optical fiber comprises an optical fiber body part and an optical fiber tail part connected with the optical fiber body part, and the optical fiber tail part is connected with a probe;
the first throwing sleeve is sleeved on the tail part of the optical fiber and the probe;
the second throwing sleeve is sleeved on the optical fiber body;
the heat shrinkage sleeve is sleeved at the front part of the first throwing sleeve and the rear part of the second throwing sleeve, a third glue injection structure is arranged in a first through hole on the first throwing sleeve and a third through hole on the heat shrinkage tube, one end of the third glue injection structure is connected with the outer surface of the tail part of the optical fiber, and the other end of the third glue injection structure is provided with a third limiting piece extending out of the outer wall of the heat shrinkage tube; a second through hole on the second throwing sleeve and a fourth through hole on the heat shrinkage tube are internally provided with a fourth glue injection structure, one end of the fourth glue injection structure is connected with the outer surface of the optical fiber body, and the other end of the fourth glue injection structure is provided with a fourth limiting part extending out of the outer wall of the heat shrinkage tube;
a third limiting piece on the outer wall of the heat shrinkage tube is coated with high-temperature resistant glue;
the winding pipe is coated on the heat shrinkage pipe and the second throwing sleeve, the heat shrinkage pipe and the second throwing sleeve are coated, and the inner surface of the tail part of the winding pipe is provided with a groove structure matched with the fourth limiting part.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, radial through holes are formed in the first and second split sleeves for cladding the optical fiber, high-temperature-resistant glue is poured into the tail and the body of the optical fiber through gaps in the first and second split sleeves, after the high-temperature-resistant glue is heated, the through holes are filled with the high-temperature-resistant glue, one end of a glue injection structure formed after solidification is connected with the outer surface of the optical fiber, and a limiting piece which is abutted against the outer wall of the first split sleeve (or the second split sleeve) is formed at the other end of the glue injection structure, so that the connection of the optical fiber, the first split sleeve and the second split sleeve can be realized; after the heat shrinkage tube is heated and shrunk, a limiting groove matched with the limiting piece is formed on the inner surface of the heat shrinkage tube, so that the heat shrinkage tube is fixedly connected with the first throwing sleeve and the second throwing sleeve; the winding pipe is fixedly connected with the heat shrinkage pipe through the cooperation of the barb structure and the groove structure and the heating and solidification of the high-temperature-resistant glue;
or radial through holes are formed in the first casting sleeve and the second casting sleeve, high temperature resistant glue is poured into the tail part and the body part of the optical fiber through gaps in the first casting sleeve and the second casting sleeve, the corresponding through holes are formed in the heat shrinkage pipe along the radial direction, after the heat shrinkage pipe is heated, the through holes are filled with the high temperature resistant glue, one end of a glue injection structure formed after solidification is connected with the outer surface of the optical fiber, and a limiting piece propped against the outer wall of the heat shrinkage pipe is formed at the other end of the glue injection structure, so that the connection of the optical fiber, the first casting sleeve, the second casting sleeve and the heat shrinkage pipe can be realized; the connection between the winding pipe and the heat shrinkage pipe is realized by matching the formed limiting piece with the groove structure and heating and curing the high-temperature-resistant glue;
therefore, the invention uses a pure physical mode (a glue injection structure formed by heating and solidifying high-temperature resistant glue) to bond the multi-layer protection pipes (the first throwing-off sleeve, the second throwing-off sleeve and the heat shrinkage pipe) with each other, and provides reliable bonding force between the protection pipes on the premise of not damaging the performance of the protection pipes (polytetrafluoroethylene materials), and can provide reliable insulation, pressure resistance and ageing resistance effects by using the multi-layer protection pipes as optical fiber protection sleeves.
2. Compared with the conventional chemical method, the physical treatment method does not change the self performance of the polytetrafluoroethylene material of the protection tube, and is more beneficial to the use of the temperature measuring optical fiber in a specific environment.
3. According to the invention, the first throwing sleeve, the second throwing sleeve, the heat shrinkage pipe and the winding pipe are made of polytetrafluoroethylene materials, so that good protectiveness can be provided, the requirements of extreme environment resistance can be met, and the economical efficiency is higher.
Drawings
FIG. 1 is a flow chart of a first embodiment of a method for encapsulating optical fibers according to the present invention;
FIG. 2 is a schematic diagram of a first embodiment of a temperature sensing optical fiber according to the present invention;
FIG. 3 is a flow chart of a second embodiment of the optical fiber packaging method of the present invention;
FIG. 4 is a schematic diagram of a second embodiment of a temperature sensing optical fiber according to the present invention;
wherein, the reference numerals are as follows:
1-a first throwing sleeve, 11-a first through hole;
2-second throwing the sleeve, 21-second through holes;
3-heat shrinkage pipes, 31-first limit grooves, 32-second limit grooves, 33-groove structures, 34-third through holes and 35-fourth through holes;
4-winding a tube, 41-barb structure;
51-optical fiber body part, 52-optical fiber tail part and 53-probe;
61-a first glue injection structure, 62-a second glue injection structure, 63-a third glue injection structure and 64-a fourth glue injection structure.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 and 2, the optical fiber packaging method of the present embodiment includes the following steps:
1) Machining the first and second split sleeves 1, 2
In order to better protect the optical fiber, the optical fiber needs to be wrapped by a protective sleeve, the tail part of the optical fiber is connected with the probe 53, and the probe 53 and the optical fiber are wrapped by one protective tube due to the large size of the probe 53, so that the optical fiber is large in size. The optical fiber and the probe 53 are respectively coated, specifically, the optical fiber is divided into an optical fiber body part 51 and an optical fiber tail part 52, the optical fiber tail part 52 is connected with the probe 53,
the second throwing sleeve 2 is sleeved on the optical fiber body 51, so that the optical fiber is coated; sleeving a first throwing sleeve 1 on the optical fiber tail 52 and the probe 53, wherein the first throwing sleeve 1 is used as an extension piece to coat the optical fiber tail 52 and the probe 53 with shorter coating, so that the coating of the probe 53 is realized;
processing a first throwing sleeve 1 according to the optical fiber tail 52 and a probe 53 connected with the optical fiber tail 52, wherein a first gap is formed in the first throwing sleeve 1 along the axial direction, a first center hole for placing the optical fiber tail 52 is formed in the front part of the first throwing sleeve 1, a probe mounting hole for placing the probe 53 is formed in the rear part of the first throwing sleeve, and a first through hole 11 communicated with the first center hole is formed in the front part of the first throwing sleeve 1 along the radial direction;
processing a second throwing sleeve 2 according to the optical fiber body 51, wherein a second central hole for placing the optical fiber body 51 is formed in the second throwing sleeve 2, a second gap is formed in the second throwing sleeve 2 along the axial direction, and a second through hole 21 communicated with the second central hole is formed in the rear part of the second throwing sleeve 2 along the radial direction;
the first and second split sleeves 1 and 2 are made of polytetrafluoroethylene, the outer diameter of the first split sleeve 1 is larger than that of the second split sleeve 2, and the second split sleeve 2 with smaller outer diameter is used for coating the optical fiber body 51 with longer length, so that miniaturization can be realized; the first through hole 11 in the embodiment is 3 circles which are axially arranged along the first throwing sleeve 1, and each circle is 2 circles which are circumferentially arranged; the second through holes 21 are 3 circles which are axially arranged along the second throwing sleeve 2, and each circle is 2 circles which are circumferentially arranged;
2) Assembling the first and second split sleeves 1, 2
Sleeving the first throwing sleeve 1 on the probe 53 and the optical fiber tail 52, wherein the inner surface of the first throwing sleeve 1 is in clearance fit with the optical fiber tail 52 and the probe 53; meanwhile, the second throwing sleeve 2 is sleeved on the optical fiber body 51, the inner surface of the second throwing sleeve 2 is in clearance fit with the optical fiber body 51, the front end surface of the first throwing sleeve 1 is propped against the rear end surface of the second throwing sleeve 2, and the first through hole 11 is positioned between the probe 53 and the second through hole 21;
3) Glue injection
Pouring high temperature resistant glue at the front end of the optical fiber tail 52 through the first gap, wherein the position of the poured high temperature resistant glue corresponds to the position of the first through hole 11 on the first throwing sleeve 1;
meanwhile, high temperature resistant glue is poured at the rear end of the optical fiber body 51 through the second gap, and the position of the poured high temperature resistant glue corresponds to the position of the second through hole 21 on the second throwing sleeve 2;
in this embodiment, the high temperature resistant glue of the fiber tail 52 and the first through hole 11 are located on the same radial plane; the high temperature resistant glue of the optical fiber body 51 and the second through hole 21 are positioned on the same radial plane;
4) Heat curing
Carrying out full circle heating on the position of the first throwing sleeve 1 corresponding to the coating of the high-temperature-resistant glue on the optical fiber tail 52, so that the high-temperature-resistant glue on the optical fiber tail 52 fills the first through hole 11, one end of a first glue injection structure 61 formed after the high-temperature-resistant glue in the first through hole 11 is solidified is connected with the outer surface of the optical fiber tail 52, and the other end extends out of the outer wall of the first throwing sleeve 1 to form a first limiting part;
the position of the second throwing sleeve 2 corresponding to the smearing of the high-temperature-resistant glue on the optical fiber body 51 is heated in a full circle, so that the high-temperature-resistant glue on the optical fiber tail 52 fills the second through hole 21, one end of a second glue injection structure 62 formed after the solidification of the high-temperature-resistant glue in the second through hole 21 is connected with the outer surface of the optical fiber body 51, and the other end extends out of the outer wall of the second throwing sleeve 2 to form a second limiting piece;
5) Installation of heat shrinkage tube 3
The rear end of the heat shrinkage tube 3 is sleeved at the front part of the first throwing sleeve 1 and is coated with a first limiting piece of the outer wall of the first throwing sleeve 1, the front end of the heat shrinkage tube 3 is sleeved at the rear part of the second throwing sleeve 2 and is coated with a second limiting piece of the outer wall of the second throwing sleeve 2, and the rear end face of the heat shrinkage tube 3 is positioned at the front side of the probe 53;
then heating the heat shrinkage tube 3, and after the heat shrinkage tube 3 is shrunk, forming a first limiting groove 31 matched with the first limiting piece and a second limiting groove 32 matched with the second limiting piece on the inner surface of the heat shrinkage tube 3, so as to realize the fixation of the heat shrinkage tube 3 and the first and second throwing-away sleeves 1 and 2;
wherein, the heat shrinkage tube 3 is made of polytetrafluoroethylene;
6) Mounting the winding tube 4
6.1 A groove structure 33 is arranged on the outer surface of the tail part of the heat shrinkage tube 3, and high temperature resistant glue is smeared on the groove structure 33;
6.2 A barb structure 41 matched with the groove structure 33 is arranged on the inner surface of the tail part of the winding pipe 4;
wherein the winding pipe 4 is made of polytetrafluoroethylene;
6.3 Winding the winding pipe 4 on the heat shrinkage pipe 3 and the second throwing sleeve 2, coating the heat shrinkage pipe 3 and the second throwing sleeve 2, and matching the barb structure 41 with the groove structure 33;
6.4 The high-temperature-resistant glue on the groove structure 33 is heated, and after the high-temperature-resistant glue is solidified, the tail of the winding pipe 4 is fixed with the tail of the heat shrinkage pipe 3, so that the packaging of the optical fiber is completed.
In other embodiments, step 6) may also provide barb structures 41 on the outer surface of the tail of the heat shrinkable tube 3, and correspondingly, provide groove structures 33 on the inner surface of the tail of the coiled tube 4, where the groove structures 33 may use taps with suitable inner diameters to tap 2-3cm of threads on the inner surface of the coiled tube 4.
The packaging method of the embodiment utilizes a pure physical method to bond multiple layers of polytetrafluoroethylene, reliable bonding force is provided between polytetrafluoroethylene on the premise of not damaging the performance of polytetrafluoroethylene materials, and a sheath of polytetrafluoroethylene materials is utilized as an optical fiber protective sleeve to provide reliable insulation, pressure resistance and ageing resistance effects.
The temperature measuring optical fiber manufactured by the optical fiber packaging method comprises an optical fiber, a first throwing sleeve 1, a second throwing sleeve 2, a heat shrinkage tube 3 and a winding tube 4 as shown in fig. 2; the optical fiber comprises an optical fiber body 51 and an optical fiber tail 52 connected with the optical fiber body 51; the optical fiber tail 52 is connected with a probe 53; the first casting sleeve 1 is sleeved on the optical fiber tail 52 and the probe 53, a first glue injection structure 61 is arranged in a first through hole 11 on the first casting sleeve 1, one end of the first glue injection structure 61 is connected with the outer surface of the optical fiber tail 52, and the other end of the first glue injection structure 61 is provided with a first limiting piece extending out of the outer wall of the first casting sleeve 1; the second throwing sleeve 2 is sleeved on the optical fiber body 51, a second glue injection structure 62 is arranged in a second through hole 21 on the second throwing sleeve 2, one end of the second glue injection structure 62 is connected with the outer surface of the optical fiber body 51, and the other end of the second glue injection structure 62 is provided with a second limiting piece extending out of the outer wall of the second throwing sleeve 2; the heat shrinkage tube 3 is sleeved at the front part of the first throwing sleeve 1 and the rear part of the second throwing sleeve 2, the inner surface of the heat shrinkage tube 3 is provided with a first limiting groove 31 matched with the first limiting piece and a second limiting groove 32 matched with the second limiting piece, the outer surface of the tail part of the heat shrinkage tube 3 is provided with a groove structure 33, and high temperature resistant glue is smeared on the groove structure 33; the winding pipe 4 is sleeved on the heat shrinkage pipe 3, the heat shrinkage pipe 3 and the second casting sleeve 2 are coated, and the inner surface of the tail part of the winding pipe 4 is provided with a barb structure 41 matched with the groove structure 33.
The sealing method of the embodiment can be applied to package type packaging processes such as fluorescent optical fiber temperature measurement, gallium arsenide optical fiber temperature measurement, optical fiber grating temperature measurement and the like.
Example two
As shown in fig. 3 and 4, the optical fiber packaging method of the present embodiment includes the following steps:
1) Machining the first and second split sleeves 1, 2
In order to better protect the optical fiber, the optical fiber needs to be wrapped by a protective sleeve, the tail part of the optical fiber is connected with the probe 53, and the probe 53 and the optical fiber are wrapped by one protective tube due to the large size of the probe 53, so that the optical fiber is large in size. Therefore, the optical fiber and the probe 53 are respectively coated, specifically, the optical fiber is divided into an optical fiber body part 51 and an optical fiber tail part 52, the optical fiber tail part 52 is connected with the probe 53, and the optical fiber is coated by sleeving the optical fiber body part 51 with the second throwing sleeve 2; sleeving a first throwing sleeve 1 on the optical fiber tail 52 and the probe 53, wherein the first throwing sleeve 1 is used as an extension piece to coat the optical fiber tail 52 and the probe 53 with shorter coating, so that the coating of the probe 53 is realized;
processing a first throwing sleeve 1 according to the optical fiber tail 52 and a probe 53 connected with the optical fiber tail 52, wherein a first gap is formed in the first throwing sleeve 1 along the axial direction, a first center hole for placing the optical fiber tail 52 is formed in the front part of the first throwing sleeve 1, a probe mounting hole for placing the probe 53 is formed in the rear part of the first throwing sleeve, and a first through hole 11 communicated with the first center hole is formed in the front part of the first throwing sleeve 1 along the radial direction;
processing a second throwing sleeve 2 according to the optical fiber body 51, wherein a second central hole for placing the optical fiber body 51 is formed in the second throwing sleeve 2, a second gap is formed in the second throwing sleeve 2 along the axial direction, and a second through hole 21 communicated with the second central hole is formed in the rear part of the second throwing sleeve 2 along the radial direction;
wherein, the first throwing sleeve 1 and the second throwing sleeve 2 are made of polytetrafluoroethylene, and the outer diameter of the first throwing sleeve 1 is larger than that of the second throwing sleeve 2; the first through hole 11 in the embodiment is 3 circles which are axially arranged along the first throwing sleeve 1, and each circle is 2 circles which are circumferentially arranged; the second through holes 21 are 3 circles which are axially arranged along the second throwing sleeve 2, and each circle is 2 circles which are circumferentially arranged;
2) Assembling the first and second split sleeves 1, 2
Sleeving the first throwing sleeve 1 on the probe 53 and the optical fiber tail 52, wherein the first throwing sleeve 1 is in clearance fit with the optical fiber tail 52 and the probe 53; meanwhile, the second split sleeve 2 is sleeved on the optical fiber body 51, the second split sleeve 2 is in clearance fit with the optical fiber body 51, the front end face of the first split sleeve 1 is contacted with the rear end face of the second split sleeve 2, and the first through hole 11 is positioned between the probe 53 and the second through hole 21;
3) Glue injection
Pouring high temperature resistant glue at the front end of the optical fiber tail 52 through the first gap, wherein the position of the poured high temperature resistant glue corresponds to the position of the first through hole 11 on the first throwing sleeve 1;
meanwhile, high temperature resistant glue is poured at the rear end of the optical fiber body 51 through the second gap, and the position of the poured high temperature resistant glue corresponds to the position of the second through hole 21 on the second throwing sleeve 2;
in this embodiment, the high temperature resistant glue of the fiber tail 52 and the first through hole 11 are located on the same radial plane; the high temperature resistant glue of the optical fiber body 51 and the second through hole 21 are positioned on the same radial plane;
4) Installation of heat shrinkage tube 3
The rear end of the heat shrinkage tube 3 is sleeved at the front part of the first throwing sleeve 1, the front end of the heat shrinkage tube 3 is sleeved at the rear part of the second throwing sleeve 2, and the rear end face of the heat shrinkage tube 3 is positioned at the front side of the probe 53;
wherein, the heat shrinkage tube 3 is made of polytetrafluoroethylene; the heat shrinkage tube 3 is provided with third through holes 34 matched with the first through holes 11, specifically, the number of the third through holes 34 is equal to that of the first through holes 11, and the positions are aligned one by one or are communicated in a staggered manner one by one; the heat shrinkage tube 3 is provided with fourth through holes 35 matched with the second through holes 21, the number of the fourth through holes 35 is equal to that of the second through holes 21, and the positions are aligned one by one or are communicated in a staggered manner one by one;
5) Heat curing
Heating the heat shrinkage tube 3, shrinking the heat shrinkage tube 3, filling the first through hole 11 and the third through hole 34 with high temperature resistant glue of the fiber tail 52, and connecting one end of a third glue injection structure 63 formed after the high temperature resistant glue in the first through hole 11 and the third through hole 34 is solidified with the outer surface of the fiber tail 52, and extending the other end of the third glue injection structure out of the outer wall of the heat shrinkage tube 3 to form a third limiting part;
and, make the high temperature resistant glue of the optical fiber body 51 fill up the second through hole 21 and fourth through hole 35, and the fourth glue injection structure 64 formed after the high temperature resistant glue solidifies in second through hole 21 and fourth through hole 35 one end links to each other with the external surface of the optical fiber body 51, another end stretches out of the outer wall of the heat shrink tube 3 to form the fourth spacing piece, realize the heat shrink tube 3 and first and second and break away from the fixed connection of the sleeve pipe 1, 2;
6) Mounting the winding tube 4
6.1 Coating high temperature resistant glue on the third limiting part on the outer wall of the tail part of the heat shrinkage tube 3;
6.2 A groove structure matched with the third limiting piece is formed on the inner surface of the tail part of the winding pipe 4, and the groove structure can adopt a tap with proper inner diameter to tap threads of 2 cm to 3cm on the inner surface of the winding pipe 4;
wherein the winding pipe 4 is made of polytetrafluoroethylene;
6.3 Winding the winding pipe 4 on the heat shrinkage pipe 3 and the second throwing sleeve 2, coating the heat shrinkage pipe 3 and the second throwing sleeve 2, and matching a third limiting piece with the groove structure;
6.4 Heating the high-temperature-resistant glue on the third limiting piece, and after the high-temperature-resistant glue is solidified, fixing the tail of the winding pipe 4 and the tail of the heat shrinkage pipe 3, so as to finish the packaging of the optical fiber.
The packaging method of the embodiment utilizes a pure physical method to bond multiple layers of polytetrafluoroethylene, reliable bonding force is provided between polytetrafluoroethylene on the premise of not damaging the performance of polytetrafluoroethylene materials, and a sheath of polytetrafluoroethylene materials is utilized as an optical fiber protective sleeve to provide reliable insulation, pressure resistance and ageing resistance effects.
The temperature measuring optical fiber manufactured by the optical fiber packaging method comprises an optical fiber, a first throwing sleeve 1, a second throwing sleeve 2, a heat shrinkage tube 3 and a winding tube 4 as shown in fig. 4; the optical fiber comprises an optical fiber body 51 and an optical fiber tail 52 connected with the optical fiber body 51, and the optical fiber tail 52 is connected with a probe 53; the first throwing sleeve 1 is sleeved on the optical fiber tail 52 and the probe 53; the second throwing sleeve 2 is sleeved on the optical fiber body 51; the heat shrink tube 3 is sleeved at the front part of the first throwing sleeve 1 and the rear part of the second throwing sleeve 2, a third glue injection structure 63 is arranged in a first through hole 11 on the first throwing sleeve 1 and a third through hole 34 on the heat shrink tube 3, one end of the third glue injection structure 63 is connected with the outer surface of the tail part 52 of the optical fiber, and a third limiting part propped against the outer wall of the heat shrink tube 3 is arranged at the other end of the third glue injection structure 63; a fourth glue injection structure 64 is arranged in the second through hole 21 on the second throwing sleeve 2 and the fourth through hole 35 on the heat shrinkage tube 3, one end of the fourth glue injection structure 64 is connected with the outer surface of the optical fiber body 51, and the other end of the fourth glue injection structure 64 is provided with a fourth limiting piece which is abutted against the outer wall of the heat shrinkage tube 3; the winding pipe 4 is sleeved on the heat shrinkage pipe 3, the heat shrinkage pipe 3 and the second throwing sleeve 2 are coated, and a groove structure matched with a third limiting part is formed in the inner surface of the tail part of the winding pipe 4. In order to improve the connection firmness of the winding pipe 4 and the heat-shrinkable tube 3, a barb structure matched with the groove structure on the inner surface of the winding pipe 4 can be arranged on the outer surface of the tail part of the heat-shrinkable tube 3, and high-temperature resistant glue can be smeared on the barb structure 41.
The above description is only of the preferred embodiments of the present invention, and the technical solution of the present invention is not limited thereto, and any modifications made by those skilled in the art based on the main technical concept of the present invention are included in the technical scope of the present invention.
Claims (8)
1. A method of packaging an optical fiber, comprising the steps of:
1) Machining a first throw-away sleeve (1) and a second throw-away sleeve (2)
Processing a first throwing sleeve (1) according to the optical fiber tail (52) and a probe (53) connected with the optical fiber tail (52), wherein a first gap is formed in the first throwing sleeve (1) along the axial direction, and a first through hole (11) is formed in the front part of the first throwing sleeve (1) along the radial direction;
processing a second split sleeve (2) according to the optical fiber body (51), wherein a second gap is formed in the second split sleeve (2) along the axial direction, and a second through hole (21) is formed in the rear part of the second split sleeve (2) along the radial direction;
the first throwing sleeve (1) and the second throwing sleeve (2) are made of polytetrafluoroethylene, and the outer diameter of the first throwing sleeve (1) is larger than that of the second throwing sleeve (2);
2) Assembling a first split sleeve (1) and a second split sleeve (2)
The first throwing sleeve (1) is sleeved on the probe (53) and the optical fiber tail (52), and the first throwing sleeve (1) is in clearance fit with the optical fiber tail (52) and the probe (53);
meanwhile, the second throwing sleeve (2) is sleeved on the optical fiber body (51), the second throwing sleeve (2) is in clearance fit with the optical fiber body (51), and the front end face of the first throwing sleeve (1) is arranged adjacent to the rear end face of the second throwing sleeve (2);
3) Glue injection
Pouring high-temperature-resistant glue at the front end of the tail part (52) of the optical fiber through the first gap, and pouring high-temperature-resistant glue at the rear end of the body part (51) of the optical fiber through the second gap;
4) Heat curing
Carrying out rounding heating on the positions, corresponding to the poured high-temperature-resistant glue, of the first throwing sleeve (1) and the second throwing sleeve (2) so that the high-temperature-resistant glue of the optical fiber tail (52) fills the first through hole (11), one end of a first glue injection structure (61) formed after solidification is connected with the outer surface of the optical fiber tail (52), and the other end of the first glue injection structure extends out of the outer wall of the first throwing sleeve (1) to form a first limiting part;
and enabling the high-temperature-resistant glue of the optical fiber body (51) to fill the second through hole (21), wherein one end of a second glue injection structure (62) formed after solidification is connected with the outer surface of the optical fiber body (51), and the other end of the second glue injection structure extends out of the outer wall of the second throwing sleeve (2) to form a second limiting piece;
5) Installation heat shrinking pipe (3)
Sleeving a heat shrinkage tube (3) on the front part of the first throwing sleeve (1) and the rear part of the second throwing sleeve (2), then heating the heat shrinkage tube (3), and after the heat shrinkage tube (3) is shrunk, forming a first limiting groove (31) matched with the first limiting piece and a second limiting groove (32) matched with the second limiting piece on the inner surface of the heat shrinkage tube (3) so as to realize the fixation of the heat shrinkage tube (3) and the first throwing sleeve (1) and the second throwing sleeve (2);
wherein, the heat shrinkage tube (3) is made of polytetrafluoroethylene;
6) Mounting winding pipe (4)
6.1 A barb structure or a groove structure (33) is arranged on the outer surface of the tail part of the heat shrinkage tube (3), and high temperature resistant glue is smeared on the barb structure or the groove structure (33);
6.2 A groove structure or a barb structure (41) matched with the barb structure or the groove structure (33) is arranged on the inner surface of the tail part of the winding pipe (4), and the winding pipe (4) is made of polytetrafluoroethylene;
6.3 Winding the winding pipe (4) on the heat shrinkage pipe (3) and the second throwing sleeve (2), coating the heat shrinkage pipe (3) and the second throwing sleeve (2), and matching the barb structure (41) with the groove structure (33);
6.4 Heating the high-temperature-resistant glue on the barb structure or the groove structure (33), and fixing the tail part of the winding pipe (4) and the tail part of the heat shrinkage pipe (3) after the high-temperature-resistant glue is solidified, so as to finish the packaging of the optical fiber.
2. The method of packaging an optical fiber of claim 1, wherein: in the step 3), the high temperature resistant glue of the tail part (52) of the optical fiber and the first through hole (11) are positioned on the same radial plane;
the high-temperature resistant glue of the optical fiber body (51) and the second through hole (21) are positioned on the same radial plane.
3. The optical fiber packaging method according to claim 1 or 2, wherein: in the step 1), the first through holes (11) are 3 circles which are axially arranged along the first throwing sleeve (1), and each circle is formed by 2 circles which are circumferentially arranged;
the second through holes (21) are 3 circles which are axially arranged along the second throwing sleeve (2), and each circle is formed by 2 circles which are circumferentially arranged.
4. A temperature measuring optical fiber manufactured by the optical fiber packaging method of any one of claims 1 to 3, characterized in that: comprises an optical fiber, a first throwing sleeve (1), a second throwing sleeve (2), a heat shrinkage tube (3) and a winding tube (4);
the optical fiber comprises an optical fiber body (51) and an optical fiber tail (52) connected with the optical fiber body (51), and the optical fiber tail (52) is connected with a probe (53);
the first casting-out sleeve (1) is sleeved on the optical fiber tail (52) and the probe (53), a plurality of first through holes (11) are formed in the first casting-out sleeve (1) in the radial direction, a first glue injection structure (61) is arranged in the first through holes (11), one end of the first glue injection structure (61) is connected with the outer surface of the optical fiber tail (52), and a first limiting piece extending out of the outer wall of the first casting-out sleeve (1) is arranged at the other end of the first glue injection structure;
the second casting sleeve (2) is sleeved on the optical fiber body (51), a second glue injection structure (62) is arranged in a second through hole (21) in the second casting sleeve (2), one end of the second glue injection structure (62) is connected with the outer surface of the optical fiber body (51), and a second limiting piece extending out of the outer wall of the second casting sleeve (2) is arranged at the other end of the second glue injection structure;
the heat-shrinkable tube (3) is sleeved at the front part of the first throwing sleeve (1) and the rear part of the second throwing sleeve (2), a first limiting groove (31) matched with the first limiting part and a second limiting groove (32) matched with the second limiting part are formed in the inner surface of the heat-shrinkable tube (3), a barb structure or a groove structure (33) is formed in the outer surface of the tail part of the heat-shrinkable tube (3), and high-temperature-resistant glue is smeared on the barb structure or the groove structure (33);
the winding pipe (4) is coated on the heat-shrinkable tube (3) and the second throwing sleeve (2), and a groove structure or a barb structure (41) matched with the barb structure or the groove structure (33) on the outer surface of the tail of the heat-shrinkable tube (3) is formed on the inner surface of the tail of the winding pipe (4).
5. A method of packaging an optical fiber, comprising the steps of:
1) Machining a first throw-away sleeve (1) and a second throw-away sleeve (2)
Processing a first throwing sleeve (1) according to the optical fiber tail (52) and a probe (53) connected with the optical fiber tail (52), wherein a first gap is formed in the first throwing sleeve (1) along the axial direction, and a first through hole (11) is formed in the front part of the first throwing sleeve (1) along the radial direction;
machining a second split sleeve (2) according to the optical fiber body (51), wherein a second gap is formed in the second split sleeve (2) along the axial direction, and a second through hole (21) is formed in the rear part of the second split sleeve (2) along the radial direction;
the first throwing sleeve (1) and the second throwing sleeve (2) are made of polytetrafluoroethylene, and the outer diameter of the first throwing sleeve (1) is larger than that of the second throwing sleeve (2);
2) Assembling a first split sleeve (1) and a second split sleeve (2)
The first throwing sleeve (1) is sleeved on the probe (53) and the optical fiber tail (52), and the first throwing sleeve (1) is in clearance fit with the optical fiber tail (52) and the probe (53);
meanwhile, the second throwing sleeve (2) is sleeved on the optical fiber body (51), the second throwing sleeve (2) is in clearance fit with the optical fiber body (51), and the front end face of the first throwing sleeve (1) is arranged adjacent to the rear end face of the second throwing sleeve (2);
3) Glue injection
Pouring high-temperature-resistant glue at the front end of the tail part (52) of the optical fiber through the first gap, and pouring high-temperature-resistant glue at the rear end of the body part (51) of the optical fiber through the second gap;
4) Installation heat shrinking pipe (3)
Sleeving the heat shrinkage tube (3) on the front part of the first throwing sleeve (1) and the rear part of the second throwing sleeve (2);
wherein, the heat shrinkage tube (3) is made of polytetrafluoroethylene, and the heat shrinkage tube (3) is provided with a third through hole (34) matched with the first through hole (11) and a fourth through hole (35) matched with the second through hole (21) along the radial direction;
5) Heat curing
Heating the heat shrinkage tube (3), shrinking the heat shrinkage tube (3), filling the first through hole (11) and the third through hole (34) with high-temperature-resistant glue of the optical fiber tail (52), connecting one end of a third glue injection structure (63) formed after solidification with the outer surface of the optical fiber tail (52), and extending the other end of the third glue injection structure out of the outer wall of the heat shrinkage tube (3) to form a third limiting part;
and the second through hole (21) and the fourth through hole (35) are filled with high-temperature-resistant glue of the optical fiber body (51), one end of a fourth glue injection structure (64) formed after solidification is connected with the outer surface of the optical fiber body (51), and the other end of the fourth glue injection structure extends out of the outer wall of the heat shrinkage tube (3) to form a fourth limiting piece, so that the heat shrinkage tube (3) is fixedly connected with the first throwing sleeve (1) and the second throwing sleeve (2);
6) Mounting winding pipe (4)
6.1 Coating high temperature resistant glue on the third limiting part on the outer wall of the heat shrinkage tube (3);
6.2 A groove structure matched with a third limiting piece is formed in the inner surface of the tail part of the winding pipe (4), and the winding pipe (4) is made of polytetrafluoroethylene;
6.3 Winding the winding pipe (4) on the heat shrinkage pipe (3) and the second throwing sleeve (2), coating the heat shrinkage pipe (3) and the second throwing sleeve (2), and matching the third limiting piece with the groove structure (33);
6.4 And (3) heating the high-temperature-resistant glue on the third limiting piece, and fixing the tail part of the winding pipe (4) with the heat shrinkage pipe (3) after the high-temperature-resistant glue is solidified, so that the packaging of the optical fiber is completed.
6. The method of encapsulating an optical fiber of claim 5 wherein:
in the step 3), the high temperature resistant glue of the tail part (52) of the optical fiber and the first through hole (11) are positioned on the same radial plane;
the high-temperature resistant glue of the optical fiber body (51) and the second through hole (21) are positioned on the same radial plane;
in the step 4), the number of the third through holes (34) and the number of the first through holes (11) are equal, and the positions are in one-to-one correspondence; the number of the fourth through holes (35) is equal to that of the second through holes (21), and the positions of the fourth through holes are in one-to-one correspondence.
7. The method of encapsulating an optical fiber of claim 6 wherein: in the step 1), the first through holes (11) are 3 circles which are axially arranged along the first throwing sleeve (1), and each circle is formed by 2 circles which are circumferentially arranged;
the second through holes (21) are 3 circles which are axially arranged along the second throwing sleeve (2), and each circle is formed by 2 circles which are circumferentially arranged.
8. A temperature measuring optical fiber manufactured by the optical fiber packaging method according to any one of claims 5 to 7, characterized in that: comprises an optical fiber, a first throwing sleeve (1), a second throwing sleeve (2), a heat shrinkage tube (3) and a winding tube (4);
the optical fiber comprises an optical fiber body (51) and an optical fiber tail (52) connected with the optical fiber body (51), and the optical fiber tail (52) is connected with a probe (53);
the first throwing sleeve (1) is sleeved on the optical fiber tail (52) and the probe (53);
the second throwing sleeve (2) is sleeved on the optical fiber body (51);
the heat shrinkage tube (3) is sleeved at the front part of the first throwing sleeve (1) and the rear part of the second throwing sleeve (2), a first through hole (11) on the first throwing sleeve (1) and a third through hole (34) on the heat shrinkage tube (3) are internally provided with a third glue injection structure (63), one end of the third glue injection structure (63) is connected with the outer surface of the tail part (52) of the optical fiber, and the other end of the third glue injection structure is provided with a third limiting part extending out of the outer wall of the heat shrinkage tube (3); a fourth glue injection structure (64) is arranged in a second through hole (21) on the second throwing sleeve (2) and a fourth through hole (35) on the heat shrinkage tube (3), one end of the fourth glue injection structure (64) is connected with the outer surface of the optical fiber body (51), and the other end of the fourth glue injection structure is provided with a fourth limiting piece extending out of the outer wall of the heat shrinkage tube (3);
a third limiting part on the outer wall of the heat shrinkage tube (3) is coated with high-temperature-resistant glue;
the winding pipe (4) is coated on the heat shrinkage pipe (3) and the second throwing sleeve (2), and a groove structure matched with the fourth limiting piece is formed in the inner surface of the tail of the winding pipe (4).
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| CN110416863A (en) * | 2019-07-19 | 2019-11-05 | 东莞理工学院 | A kind of bundling device encapsulating structure of high power laser system |
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2021
- 2021-07-28 CN CN202110857001.8A patent/CN113607303B/en active Active
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| GB8514944D0 (en) * | 1985-06-13 | 1985-07-17 | Bicc Plc | Jointing optical fibres |
| CN103512593A (en) * | 2012-06-20 | 2014-01-15 | 山东金煜电子科技有限公司 | Embedded fiber grating sensor and manufacturing method |
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