Easily-maintained optical cable and optical cable maintenance method

Abstract

The invention provides an easy-to-maintain optical cable and an optical cable maintenance method, and solves the technical problem that the optical cable is difficult to maintain after being soaked in water. The easy-to-maintain optical cable comprises a sheath, an optical fiber, a positioning sheet and an identification holding part, the optical fiber is located in the sheath, the positioning sheet is fixed in at least one side wall of the sheath, and the identification holding part is fixed on the outer wall of the sheath; the part, located between the positioning piece and the mark holding part, of the protective sleeve is a cutting part, a cutting gap is formed in the positioning piece, the cutting part and the cutting gap extend in the thickness direction of the side wall of the protective sleeve, and one side of the positioning piece is connected with the cutting part and the cutting gap. The sheath is sequentially cut along the cutting part, the side, facing the cutting part, of the positioning piece and the cutting gap, the interior of the sheath can be maintained by opening a skylight on the sheath, and after maintenance is completed, glue is coated along the cutting gap, the side, facing the cutting part, of the positioning piece and the cutting part, the sheath is closed, and maintenance is carried out on the premise that the optical fiber is not damaged. The tension of the optical cable is not affected, and the optical cable does not need to be laid again.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cables, and in particular to an easily repairable optical cable and an optical cable repair method. Background Art

[0002] At present, with the complexity of the optical cable wiring environment, when the optical cable is laid and constructed, it is pierced by sharp objects, resulting in partial water leakage of the optical cable. After the optical fiber is soaked in water for a long time, the glass surface absorbs water vapor and slowly undergoes hydrolysis reaction, which causes the silicon oxygen bond in the original network -Si-O-Si- to break, and the bridging oxygen becomes non-bridging oxygen, resulting in glass cracks and continuous growth of cracks. Therefore, the optical fiber is very easy to break. In addition, the appearance of OH radicals will also increase the absorption loss of optical fiber to light, resulting in a sharp increase in line loss in the 1150nm band. In winter, water freezes and expands, which will damage the optical fiber.

[0003] The applicant has discovered that the prior art has at least the following technical problems: it is extremely difficult to repair existing optical cables after they have been submerged in water. It is not easy to quickly and accurately locate the leaking section, visual management is not possible, and abnormalities cannot be discovered in the early stages of the abnormality, resulting in difficulties in subsequent repairs. In addition, the optical cable needs to be cut during repair, which damages the reinforcing components of the optical cable itself, and the external connection causes the service life of the optical cable to be greatly reduced. Summary of the invention

[0004] The purpose of the present invention is to provide an easily repairable optical cable and an optical cable repair method to solve the technical problem that the optical cable is difficult to repair after being immersed in water in the prior art. The preferred technical solution among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The easily repairable optical cable provided by the present invention comprises a sheath, an optical fiber, a positioning piece and a marking holding portion, wherein:

[0007] The optical fiber is located in the sheath, the positioning piece is fixed in at least one side wall of the sheath, and the marking gripping portion is fixed on the outer wall of the sheath;

[0008] The portion of the sheath located between the positioning piece and the identification holding portion is a cutting portion, a cutting gap is provided on the positioning piece, the cutting portion and the cutting gap extend along the thickness direction of the side wall of the sheath, and one side of the positioning piece connects the cutting portion and the cutting gap.

[0009] Preferably, a water-blocking reinforcement member is provided in the sheath; the water-blocking reinforcement member comprises water-blocking aramid yarn or water-blocking glass yarn.

[0010] Preferably, a water-colorizing portion is provided in the sheath; the water-colorizing portion comprises anhydrous copper sulfate powder.

[0011] Preferably, the positioning piece includes a first positioning piece and a second positioning piece, wherein:

[0012] The first positioning piece and the second positioning piece are located in the same side wall of the sheath, and the cutting gap is located between the first positioning piece and the second positioning piece.

[0013] Preferably, the logo gripping portion comprises a first logo gripping portion and a second logo gripping portion, wherein:

[0014] The first identification gripping portion and the second identification gripping portion are fixed on the outer wall of the same side of the sheath, wherein one of the cutting portions is located between the end of the first positioning piece and the first identification gripping portion, and the other cutting portion is located between the end of the second positioning piece and the second identification gripping portion.

[0015] Preferably, the first positioning sheet and the second positioning sheet each include a transverse sheet and a longitudinal sheet, wherein:

[0016] The transverse piece is fixed to one end of the longitudinal piece, and the two are in an L-shaped structure; the cutting portion is located between the transverse piece and the logo holding portion.

[0017] Preferably, the first positioning piece and the second positioning piece are symmetrically arranged with respect to the cutting gap.

[0018] Preferably, the logo holding portion is in an L-shaped structure, one section of the logo holding portion is arranged parallel to the transverse piece, and the cutting portion is located between the two.

[0019] Preferably, the positioning sheet is a metal sheet.

[0020] The present invention also provides a maintenance method for an optical cable, using the above-mentioned easy-to-repair optical cable, the maintenance method comprising:

[0021] At the optical cable section that needs to be repaired, the sheath is cut in sequence along the cutting portion, the side of the positioning piece facing the cutting portion, and the cutting gap to open a window in the sheath;

[0022] After the internal maintenance of the optical cable is completed, glue is applied along the cutting gap, the side of the positioning piece facing the cutting portion, and the cutting portion to adhere and seal the sheath.

[0023] Preferably, after the internal maintenance of the optical cable is completed, glue is applied along the cutting gap, the side of the positioning piece facing the cutting portion, and the cutting portion to adhere and seal the sheath.

[0024] Preferably, a straight line cutting is performed along the cutting gap until the side wall of the sheath is completely cut off.

[0025] Preferably, when applying the glue, the glue is applied to the cutting surface of the sheath and the side of the positioning piece facing the cutting portion.

[0026] Preferably, a water-blocking reinforcement member is provided in the sheath; a water-appearing coloring portion is provided in the sheath;

[0027] The maintenance method further comprises:

[0028] When the interior of the optical cable is repaired, the water-blocking reinforcement member that has absorbed water and the water-discoloring portion that has changed color are cleaned, and new water-blocking reinforcement members and water-discoloring portions are replaced.

[0029] The easily repairable optical cable and the optical cable repair method provided by the present invention have the following beneficial effects compared with the prior art: the easily repairable optical cable does not need to cut the optical cable, and the sheath is cut in sequence along the cutting portion, the side of the positioning piece facing the cutting portion, and the cutting gap, and the inside of the sheath can be repaired by opening a window in the sheath. After the repair, glue is applied along the cutting gap, the side of the positioning piece facing the cutting portion, and the cutting portion, and the sheath is adhered and sealed to prevent the glue from entering the inside of the sheath. The positioning piece and the marking gripping portion facilitate positioning the cutting position, so that the cutting position is neat; precise repair can be achieved, and the repair is performed without damaging the optical cable reinforcement member and the optical fiber, so that the tension of the optical cable is not affected, and there is no need to re-lay the optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the internal structure of the easy-to-repair optical cable;

[0032] Figure 2 This is a top view of the internal structure of the easily repairable optical cable;

[0033] Figure 3 It is a schematic diagram of the structure of the sheath cutting side.

[0034] In the figure, 1, sheath; 11, cutting part; 12, cutting gap; 2, optical fiber; 3, positioning piece; 31, first positioning piece; 311, transverse piece; 312, longitudinal piece; 32, second positioning piece; 4, identification gripping part; 41, first identification gripping part; 42, second identification gripping part; 5, water-blocking reinforcement member; 6, water-colorizing part. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0037] The embodiments of the present invention provide an easily repairable optical cable and an optical cable repair method, which facilitates the positioning of cutting positions, makes the cutting positions neat, and ensures the product quality after the optical cable is repaired.

[0038] Combine the following Figure 1-Figure 3 The technical solution provided by the present invention is described in more detail.

[0039] Embodiment 1:

[0040] like Figure 1-Figure 3 As shown, the easily repairable optical cable provided by the present invention comprises a sheath 1, an optical fiber 12, a positioning piece 3 and an identification gripping portion, wherein: the optical fiber 12 is located in the sheath 1, the positioning piece 3 is fixed in at least one side wall of the sheath 1, and the identification gripping portion 4 is fixed on the outer wall of the sheath 1; the portion of the sheath 1 located between the positioning piece 3 and the identification gripping portion is a cutting portion 11, a cutting gap 12 is provided on the positioning piece 3, the cutting portion 11 and the cutting gap 12 extend along the thickness direction of the side wall of the sheath 1, and one side of the positioning piece 3 connects the cutting portion 11 and the cutting gap 12.

[0041] The cross-sectional shape of the sheath 1 is a rectangle or other shapes, but it should be ensured that one side of the sheath 1 on which the positioning piece is installed is a straight side, so as to facilitate the installation of the positioning piece and the cutting.

[0042] The sheath 1 is made of PA or PVC transparent material, which is convenient for observing the internal state of the optical cable.

[0043] Specifically, the positioning sheet 3 can be a metal sheet such as an iron sheet to ensure structural strength and a certain degree of support, and facilitate the coating of adhesive.

[0044] The easy-to-repair optical cable does not need to be cut. The sheath 1 is cut in sequence along the cutting portion 11, the side of the positioning piece 3 facing the cutting portion 11, and the cutting gap 12. The inside of the sheath 1 can be repaired by opening a window in the sheath 1. After the repair, glue is applied along the cutting gap 12, the side of the positioning piece 3 facing the cutting portion 11, and the cutting portion 11, and the sheath 1 is adhered and sealed to prevent the glue from entering the inside of the sheath 1. The positioning piece 3 and the marking gripping portion facilitate the positioning of the cutting position, so that the cutting position is neat and the product quality of the optical cable after repair is guaranteed. Accurate repair is achieved, and repair is performed without damaging the optical cable reinforcement and the optical fiber 12, so that the tension of the optical cable is not affected, and there is no need to re-lay the optical cable.

[0045] See also Figure 3 When bonding after maintenance, the removed part of the sheath 1 forms an inlay structure with the positioning piece 3, so that the removed part of the sheath 1 is completely embedded in the positioning piece 3. After bonding with glue, the surface will be flat without bulges or depressions.

[0046] As an alternative embodiment, see Figure 1 and Figure 2 As shown, a water-blocking reinforcement member 5 is arranged in the sheath 1; the water-blocking reinforcement member 5 includes water-blocking aramid yarn or water-blocking glass yarn.

[0047] The internal water-blocking reinforcement member 5 of the optical cable is a water-blocking aramid yarn, which can provide tension to the optical cable, and the water-blocking powder on its surface can also play a role in longitudinal water blocking of the optical cable.

[0048] As an alternative embodiment, see Figure 1 and Figure 2 As shown, a water-induced color developing portion 6 is disposed in the sheath 1; the water-induced color developing portion 6 includes anhydrous copper sulfate powder.

[0049] Some white anhydrous copper sulfate powder is filled inside the optical cable. When anhydrous copper sulfate meets water, its aqueous solution is weakly alkaline and appears blue when it meets water. Based on this principle, it is possible to accurately locate which section of the optical cable has a ruptured sheath 1 that causes water to leak into the optical cable, and accurately locate the length of the leakage section.

[0050] As an alternative embodiment, see Figure 1-Figure 3 As shown, the positioning piece 3 includes a first positioning piece 31 and a second positioning piece 32, wherein: the first positioning piece 31 and the second positioning piece 32 are located in the same side wall of the sheath 1, and the cutting gap 12 is located between the first positioning piece 31 and the second positioning piece 32. This structure facilitates the formation of the cutting gap 12 and facilitates the cutting and bonding of the sheath 1.

[0051] The functions of the positioning piece 3 are, firstly, to cooperate with the marking holding part 4 to position the cutting part 11, so that the maintenance personnel can cut and open the sheath 1 along the positioning piece, the cutting part 11 and the cutting gap to maintain the inside of the optical cable. Secondly, after the maintenance is completed, in order to re-close the sheath 1, glue is applied along the cutting gap 12, the side of the positioning piece 3 facing the cutting part 11, and the cutting part 11, so as to facilitate the regular application of glue, prevent the cutting part 11 from being uneven, and prevent the glue from overflowing or entering the inside of the sheath 1.

[0052] As an alternative embodiment, see Figure 1-Figure 3 As shown, the identification gripping portion 4 includes a first identification gripping portion 41 and a second identification gripping portion 42, wherein: the first identification gripping portion 41 and the second identification gripping portion 42 are fixed on the outer wall of the same side of the sheath 1, wherein one cutting portion 11 is located between the end of the first positioning piece 31 and the first identification gripping portion 41, and the other cutting portion 11 is located between the end of the second positioning piece 32 and the second identification gripping portion 42.

[0053] The function of the marking grip is, firstly, to mark the position of the positioning piece 3, so that maintenance personnel can cut the sheath 1 along the marking grip and the cutting portion 11 at the end of the positioning piece 3; secondly, to facilitate construction personnel to pull out the sheath 1 part cut on one side of the positioning piece 3.

[0054] Specifically, the height of the logo grip portion is 0.5-1.0 mm, and the width is 0.4-0.8 mm.

[0055] As an alternative embodiment, see Figure 3 As shown, the first positioning piece 31 and the second positioning piece 32 both include a transverse piece 311 and a longitudinal piece 312, wherein: the transverse piece 311 is fixed to one end of the longitudinal piece 312, and the two are in an L-shaped structure; the cutting portion 11 is located between the transverse piece 311 and the logo holding portion. The first positioning piece 31 and the second positioning piece 32 are symmetrically arranged about the cutting gap 12. The above structure facilitates accurate positioning of the position of the cutting portion 11 to form a cutting line with a regular incision.

[0056] As an alternative embodiment, see Figure 1 and Figure 3 As shown, the logo holding portion 4 is in an L-shaped structure, one section of the logo holding portion is arranged parallel to the transverse piece 311, and the cutting portion 11 is located between the two.

[0057] The above structure facilitates accurate positioning of the cutting portion 11 and forms a cutting line with a regular incision.

[0058] Figure 1 and Figure 3 The bold dashed lines in the figure indicate the cutting path. Figure 1 and Figure 3As shown, when the target optical cable segment needs to be repaired, the sheath 1 is cut along the cutting portion 11 between the identification holding portion and the positioning member, the side of the positioning member facing the identification holding portion (the side away from the optical fiber 12), and the cutting gap, the sheath 1 is torn open, the identification holding portion is held, and the outer part of the cut sheath 1 is taken out until the inside of the optical cable is exposed, and then the anhydrous copper sulfate and the wet water-blocking reinforcement member 5 inside are cleaned, and after adding some new water-blocking reinforcement members 5 and some anhydrous copper sulfate powder, the sheath 1 with the skylight is merged. When merging, hot melt adhesive and a hot melt gun are used to seal and bond them, that is, the glue is applied to the dotted line position in the figure (the original cutting line position), so as to achieve precise maintenance, and the maintenance is carried out without damaging the optical cable reinforcement member and the optical fiber 12, so that the tension of the optical cable is not affected, and there is no need to re-lay the optical cable.

[0059] Embodiment 2:

[0060] The present embodiment provides a method for repairing an optical cable, using the above-mentioned easily repairable optical cable, the repair method comprising: in the section of the optical cable that needs repair, cutting the sheath 1 in sequence along the cutting portion 11, the side of the positioning piece 3 facing the cutting portion 11, and the cutting gap 12, to open a window in the sheath 1; after completing the internal repair of the optical cable, applying glue along the cutting gap 12, the side of the positioning piece 3 facing the cutting portion 11, and the cutting portion 11, to adhere and seal the sheath 1.

[0061] The optical cable repair method has the advantages of accurate repair, and the repair is performed without damaging the optical cable reinforcement member and the optical fiber 12, so that the tension of the optical cable is not affected, and there is no need to re-lay the optical cable.

[0062] When hot melt adhesive is used for bonding, since the two positioning pieces 3 facing the marking gripping part are bonded to the torn sheath 1, the glue will not flow into the inside of the optical cable. Since the torn rectangular sheath 1 can form an inlay structure with the remaining sheath 1 of the positioning piece, it can be completely embedded in the remaining sheath 1, and the surface will be flat after gluing without convexity or concave phenomenon.

[0063] As an alternative embodiment, see Figure 2 and Figure 3 As shown, a straight-line cut is made along the cutting gap 12 until the side wall of the sheath 1 is completely cut off, so as to form a neatly structured cut for subsequent bonding.

[0064] As an optional embodiment, when applying glue, the glue is applied to the cutting surface of the sheath 1 and the side of the positioning piece facing the cutting portion 11. This facilitates the application of glue and prevents the glue from overflowing or entering the inside of the sheath 1.

[0065] As an optional implementation, a water-blocking reinforcement member 5 is provided in the sheath 1; a water-colorizing portion 6 is provided in the sheath 1; the maintenance method also includes: when repairing the interior of the optical cable, cleaning the water-blocking reinforcement member 5 after absorbing water, cleaning the water-colorizing portion 6 after changing color, and replacing new water-blocking reinforcement member 5 and water-colorizing portion 6.

[0066] The production method of the optical cable is as follows: placing the optical fiber 12 and the water-blocking aramid yarn on a pay-off frame, wherein the pay-off tension of the optical fiber 12 is 100 grams, and the pay-off tension of the water-blocking aramid yarn is 300 grams, placing two L-shaped iron sheets horizontally into the inner film, and then passing the optical fiber 12 and the water-blocking aramid yarn through a powder-applying machine, penetrating into the inner film of the die head, and turning on the powder-applying machine at the same time, so that a layer of copper sulfate powder is applied to the reinforcement and the optical fiber 12, and the die head turns on the extruder to extrude the PA or PVC transparent sheath 1, and the extruder temperature is 170°C, 175°C, 180°C, 185°C, 180°C, 175°C, 170°C. Then pulling it to the traction machine through a water tank, thus forming a cable.

[0067] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0069] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An easily repairable optical cable, characterized in that: It includes a sheath, an optical fiber, a positioning sheet and a marking holding portion, wherein: The optical fiber is located in the sheath, the positioning piece is fixed in at least one side wall of the sheath, and the marking gripping portion is fixed on the outer wall of the sheath; The portion of the sheath located between the positioning piece and the identification holding portion is a cutting portion, a cutting gap is provided on the positioning piece, the cutting portion and the cutting gap extend along the thickness direction of the side wall of the sheath, and one side of the positioning piece connects the cutting portion and the cutting gap.

2. The easily repairable optical cable according to claim 1, characterized in that: A water-blocking reinforcement member is arranged in the sheath; the water-blocking reinforcement member comprises water-blocking aramid yarn or water-blocking glass yarn.

3. The easily repairable optical cable according to claim 1, characterized in that: A water-induced color development portion is arranged in the sheath; the water-induced color development portion comprises anhydrous copper sulfate powder.

4. The easily repairable optical cable according to claim 1, characterized in that: The positioning piece includes a first positioning piece and a second positioning piece, wherein: The first positioning piece and the second positioning piece are located in the same side wall of the sheath, and the cutting gap is located between the first positioning piece and the second positioning piece.

5. The easily repairable optical cable according to claim 4, characterized in that: The logo holding portion includes a first logo holding portion and a second logo holding portion, wherein: The first identification gripping portion and the second identification gripping portion are fixed on the outer wall of the same side of the sheath, wherein one of the cutting portions is located between the end of the first positioning piece and the first identification gripping portion, and the other cutting portion is located between the end of the second positioning piece and the second identification gripping portion.

6. The easily repairable optical cable according to claim 4, characterized in that: The first positioning piece and the second positioning piece both include a transverse piece and a longitudinal piece, wherein: The transverse piece is fixed to one end of the longitudinal piece, and the two are in an L-shaped structure; the cutting portion is located between the transverse piece and the logo holding portion.

7. The easily repairable optical cable according to claim 6, characterized in that: The first positioning piece and the second positioning piece are symmetrically arranged with respect to the cutting gap.

8. The easily repairable optical cable according to claim 6, characterized in that: The logo holding portion is in an L-shaped structure, one section of the logo holding portion is arranged parallel to the transverse piece, and the cutting portion is located between the two.

9. The easily repairable optical cable according to claim 1, characterized in that: The positioning sheet is a metal sheet.

10. A method for repairing an optical cable, characterized in that: Using the easily repairable optical cable according to any one of claims 1 to 9, the repair method comprises: At the optical cable section that needs to be repaired, the sheath is cut in sequence along the cutting portion, the side of the positioning piece facing the cutting portion, and the cutting gap, a window is opened in the sheath, and the inside of the sheath is repaired.

11. The optical cable maintenance method according to claim 10, characterized in that: After the internal maintenance of the optical cable is completed, glue is applied along the cutting gap, the side of the positioning piece facing the cutting portion, and the cutting portion to adhere and seal the sheath.

12. The optical cable maintenance method according to claim 11, characterized in that: A straight line cut is made along the cutting gap until the side wall of the sheath is completely cut off.

13. The optical cable maintenance method according to claim 11, characterized in that: When applying the glue, the glue is applied to the cutting surface of the sheath and the side of the positioning piece facing the cutting portion.

14. The optical cable maintenance method according to claim 10, characterized in that: A water-blocking reinforcement member is provided in the sheath; a water-appearing coloring portion is provided in the sheath; The maintenance method further comprises: When the interior of the optical cable is repaired, the water-blocking reinforcement member that has absorbed water and the water-discoloring portion that has changed color are cleaned, and new water-blocking reinforcement members and water-discoloring portions are replaced.

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