CN116165754B

CN116165754B - Reusable light watertight optical cable and manufacturing method thereof

Info

Publication number: CN116165754B
Application number: CN202211566620.2A
Authority: CN
Inventors: 陈明; 沈玉荣; 丁赵伟; 马敬磊; 郭亚; 冯学虎; 于斌; 李国帅
Original assignee: Jiangsu Huamai Photoelectric Technology Co ltd
Current assignee: Jiangsu Huamai Photoelectric Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-11-03
Anticipated expiration: 2042-12-07
Also published as: CN116165754A

Abstract

The application discloses a reusable light watertight optical cable and a manufacturing method thereof, and relates to the technical field of optical cables, wherein the reusable light watertight optical cable comprises an optical fiber, an internal waterproof adhesive, a waterproof layer, a reinforcing layer, an inner sheath, an armor layer, an external waterproof adhesive and an outer sheath; the inner water-blocking adhesive coats the optical fiber and is water-swelling water-blocking filling adhesive; the waterproof layer is a waterproof tape and is coated on the inner waterproof adhesive; the reinforcing layer is made of water-blocking type aramid fiber and is coated on the water-blocking layer; the inner sheath is made of polyethylene or chloroprene rubber and is sleeved on the reinforcing layer; the armor layer is a tube woven by stainless steel wires and coats the inner sheath; the outer water-blocking glue is coated on the armor layer and is a sealing water-resistant water-blocking filling glue; the outer sheath is made of polyurethane and is sleeved on the outer water-blocking adhesive; the optical cable can be operated under high water pressure, and is easy to repeatedly retract and recycle.

Description

Reusable light watertight optical cable and manufacturing method thereof

Technical Field

The application relates to the technical field of optical cables, in particular to a reusable light watertight optical cable and a manufacturing method thereof.

Background

With the development of the technology of the sea and lake exploration and underwater application by human beings, the requirement of the underwater light optical cable is more and more paid attention, and simultaneously, higher requirements are also put forward on the radial water pressure resistance (the capability of measuring the lateral pressure bearing capability of the underwater optical cable) and the longitudinal water tightness (the capability of measuring the water penetration resistance of the underwater optical cable) of the watertight optical cable.

The watertight optical cable has the characteristics of high tensile strength, good wear resistance, good corrosion resistance and the like, and is widely applied to the aspects of large-scale submersibles, underwater robots, marine exploration and the like; the watertight optical cable commonly used in the prior art mainly has two structures: the structure adopts the stainless steel tube and the steel wire to twist, has large weight, poor bending property and flexibility, is not beneficial to repeated winding and unwinding operation of the optical cable, and has higher production cost and processing technology requirements; the other adopts a nonmetal plastic pipe and aramid fiber reinforced structure, and all the structures adopt nonmetal materials, so that the rigidity is insufficient, and the water pressure resistance is poor. Therefore, the existing watertight optical cable structure and materials are difficult to meet the requirements of water pressure resistance of the optical cable under high water pressure and easy repeated winding and unwinding and recycling in the practical application process of the optical cable.

Disclosure of Invention

The embodiment of the application solves the technical problems that the optical cable is poor in water pressure resistance and difficult to repeatedly retract and recycle under high water pressure in the prior art by providing the light water-tight optical cable capable of being recycled, and achieves the technical effects that the optical cable can work under high water pressure and is easy to repeatedly retract and recycle.

The embodiment of the application provides a reusable light watertight optical cable, which comprises an optical fiber, internal waterproof glue, a waterproof layer, a reinforcing layer, an inner sheath, an armor layer, external waterproof glue and an outer sheath;

the inner water-blocking adhesive coats the optical fiber and is water-swelling water-blocking filling adhesive;

the waterproof layer is a waterproof tape and is coated on the inner waterproof adhesive;

the reinforcing layer is made of water-blocking type aramid fiber and is coated on the water-blocking layer;

the inner sheath is made of polyethylene or chloroprene rubber and is sleeved on the reinforcing layer;

the armor layer is a tube woven by stainless steel wires and coats the inner sheath;

the outer water-blocking glue is coated on the armor layer and is a sealing water-resistant water-blocking filling glue;

the outer sheath is made of polyurethane and is sleeved on the outer water-blocking adhesive.

Furthermore, the optical cable is of a central beam tube structure and further comprises a stranded body, wherein the stranded body is formed by spirally twisting an optical fiber and a tight cladding thereof; the optical fiber is coated by the tight cladding, and the tight cladding is made of polyamide, polyvinyl chloride or low-smoke halogen-free flame retardant polyolefin.

Furthermore, the optical cable also comprises a loose tube, and the loose tube is sleeved on the inner water-blocking adhesive.

Preferably, the protective sleeve is further included;

the whole protective sheath pipe is tubular and sleeved on the outer sheath;

the inner diameter of the protective sheath tube is 5 to 10 millimeters larger than the outer diameter of the outer sheath;

the protection sleeve is characterized in that a groove is formed in one end of the protection sleeve, a convex ring is arranged at the other end of the protection sleeve, the groove and the convex ring can be mutually embedded, and the groove and the convex ring of two adjacent protection sleeves can be combined together in an inserting mode.

Preferably, the outer sheath and the inner parts thereof are optical cable main bodies;

the protective sleeve is also provided with an insertion hole, the insertion hole is a through hole, and the length direction of the insertion hole is the same as the axial direction of the protective sleeve;

the connecting rope connects all the protective sleeves together in series through the penetrating holes;

the connecting rope is a steel rope or other nonmetallic rope body;

when the optical cable is used, after the protective sheath pipes on the same optical cable are spliced, the two ends of the connecting rope are fixed on the protective sheath pipes at the two ends.

Preferably, two penetrating holes are formed in one protective sheath pipe, and the two penetrating holes are symmetrically formed;

the number of the connecting ropes on one optical cable is two, and the two connecting ropes can ensure that the protective sheath pipes which are strung into strings are more stable, and are also easier to detach from the outer sheath and sleeve on the outer sheath again.

Preferably, the protective sheath pipe is assembled and disassembled by using a sheath assembly and disassembly assembly, and the sheath assembly and disassembly assembly comprises a support, a first support ring, a second support ring, a connecting column, a rotary roller, a roller support assembly and an extrusion column assembly;

the support plays a role in supporting and positioning;

the first support ring is annular and is fixed at the top of the support seat and used for supporting and positioning the extrusion column assembly, the extrusion column assembly is a combination of a plurality of telescopic rods uniformly distributed on the first support ring, and the telescopic rods are simultaneously stretched to fix the optical cable;

the bottom ends of the connecting columns are fixed at the top of the first supporting ring, the top ends of the connecting columns are fixed at the bottom of the second supporting ring, the number of the connecting columns is multiple, and the distance between two adjacent connecting columns is equal;

the second support ring plays a role in supporting and positioning the rotary drum and the drum support assembly;

the rotary roller is rotatably and fixedly connected to the roller supporting assembly;

the roller support assembly is positioned on the second support ring;

the number of the rotating drums is three or more, motors are built in, and the side walls of the rotating drums are tightly attached to the optical cable when the optical cable is used.

Preferably, the protective sheath is a hollow structure pipe body, a tubular space is arranged in the protective sheath, a reinforcing rib is arranged in the tubular space, one side of the tubular space is provided with an annular water filling port, and after the protective sheath is spliced, the distance between the water filling ports is greater than or equal to the length of one protective sheath; when the optical cable is used, after the optical cable is filled with water, the water gradually fills the tubular space to become the counterweight of the optical cable, so that the influence of the water dark current on the optical cable is reduced; when the optical cable is fished out of the water, the water in the tubular space flows out from the water injection port.

Preferably, a closed ring is fixed on the surface, close to the outer sheath, of the tubular space;

the closed ring is a metal hollow ring and is arranged close to the water injection port;

the closed loop comprises a bottom plate, a first arc-shaped plate and a second arc-shaped plate;

the bottom plate, the first arc-shaped plate and the second arc-shaped plate are all annular, and are spliced together to form an annular space with a cross section similar to a triangle;

the bottom plate is fixed on the surface of the tubular space, which is close to the outer sheath;

when the closed ring is in natural air, the first arc-shaped plate and the second arc-shaped plate are in an outwards convex state, after water enters and reaches a corresponding depth, the first arc-shaped plate and the second arc-shaped plate are converted into an inwards concave state from the outwards convex state under the influence of water pressure, so that the top of the closed ring is abutted against the wall, far away from the outer sheath, of the tubular space of the protective sheath, and the tubular space of the protective sheath is closed.

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:

the optical cable comprises an optical fiber, an internal waterproof layer, a reinforcing layer, an inner sheath, an armor layer, an external waterproof layer and an outer sheath, wherein the internal waterproof layer, the waterproof layer and the external waterproof layer are made of different waterproof materials, so that the radial water pressure resistance and the longitudinal water tightness of the optical cable are greatly improved, the formation of a water flow channel between the optical cable layers and the permeation of water molecules are avoided, the waterproof aramid fiber of the reinforcing layer has high elastic modulus, the optical cable has good flexibility, flexibility and tensile strength, the wear resistance of the optical cable is enhanced by weaving the stainless steel wire armor layer, the optical cable is prevented from being damaged by underwater organisms, the optical cable has certain rigidity, and the outer sheath has excellent wear resistance, chemical resistance and hydrolysis resistance and can be well adapted to different underwater severe environments; the full-end surface water blocking of the optical cable can be repeatedly received, released and recycled in underwater environments such as shallow sea, lakes and the like; the technical problems that the hydraulic resistance of the optical cable under high hydraulic pressure in the prior art is poor and the optical cable is not easy to repeatedly retract and release and recycle are effectively solved, and the technical effects that the optical cable can work under high hydraulic pressure and is easy to repeatedly retract and release and recycle are achieved.

Drawings

FIG. 1 is a schematic view of the first internal structure of the reusable lightweight watertight cable of the present application;

FIG. 2 is a schematic view of the structure of a second internal structure of the reusable lightweight watertight cable of the present application;

FIG. 3 is a schematic view of the exterior structure of the reusable light watertight cable protective sheath of the present application;

FIG. 4 is a schematic view showing the external appearance of an ellipsoidal protective sheath tube of the reusable light watertight cable of the present application;

FIG. 5 is a schematic view of the positional relationship between the penetration hole of the reusable light watertight cable and the protective sheathing;

FIG. 6 is a schematic view of the connection cord of the reusable light watertight cable of the present application;

FIG. 7 is a schematic view of the exterior structure of the jacket rotating assembly of the reusable lightweight watertight cable of the present application;

FIG. 8 is a schematic view of the jacket rotating assembly of the reusable light watertight cable of the present application;

FIG. 9 is a schematic view of the jacket assembly of the reusable light watertight cable of the present application;

FIG. 10 is a schematic view of the structure of the water filling port of the reusable light watertight cable of the present application;

FIG. 11 is a schematic view of the relationship between the water filling port and the closed ring of the reusable light watertight cable of the present application;

FIG. 12 is a partial cross-sectional view of a protective boot for a reusable light watertight cable of the present application;

FIG. 13 is a schematic view of the structure of the closure ring of the reusable lightweight watertight cable of the present application;

fig. 14 is a schematic view showing a deformed state of the closure ring of the reusable light watertight cable of the present application.

In the figure:

optical fiber 001, stranded body 002, inner waterproof glue 003, waterproof layer 004, reinforcing layer 005, inner sheath 006, armor 007, outer waterproof glue 008, outer sheath 009, loose tube 010;

protective sheath 100, groove 110, collar 120, penetration hole 130, connecting rope 140, rope body 141, elastic part 142, water filling port 150, reinforcing rib 160, sealing ring 170, bottom plate 171, first arc plate 172, second arc plate 173;

the sheath rotating assembly 200, the arc plate 210, the positioning block 220, the rotating wheel 230 and the cleaning brush 240;

the jacket assembly and disassembly assembly 300, the support 310, the first support ring 320, the second support ring 330, the connection post 340, the rotating drum 350, the drum support assembly 360, and the squeeze post assembly 370.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings; the preferred embodiments of the present application are illustrated in the drawings, however, the present application may be embodied in many different forms and is not limited to the embodiments described herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like are used herein for illustrative purposes only and do not represent the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The light watertight optical cable comprises an optical fiber 001, an internal watertight glue 003, a watertight layer 004, a reinforcing layer 005, an inner sheath 006, an armor layer 007, an outer watertight glue 008 and an outer sheath 009, wherein the internal watertight glue 003, the watertight layer 004 and the outer watertight glue 008 are made of different water-blocking materials respectively, so that the radial water pressure resistance and the longitudinal watertight performance of the optical cable are greatly improved, the formation of a water flow channel between the optical cable layers and the permeation of water molecules are avoided, the water-blocking type aramid fiber of the reinforcing layer 005 has high elastic modulus, the optical cable has good bending property, flexibility and tensile strength, the wear resistance of the optical cable is enhanced by weaving the stainless steel wire armor layer 007, the damage of underwater organisms to the optical cable is prevented, the optical cable has certain rigidity, and the outer sheath 009 has excellent wear resistance, chemical resistance and hydrolysis resistance and can be well adapted to different underwater severe environments; the full-end surface water blocking of the optical cable can be repeatedly received, released and recycled in underwater environments such as shallow sea, lakes and the like; the optical cable can be operated under high water pressure, and is easy to repeatedly retract and recycle.

Example 1

As shown in fig. 1, the reusable light watertight cable of the present application includes an optical fiber 001, an inner water blocking gel 003, a water blocking layer 004, a reinforcing layer 005, an inner sheath 006, an armor layer 007, an outer water blocking gel 008, and an outer sheath 009.

The inner water-resistant glue 003 coats the optical fiber 001 and is water-swelling type water-resistant filling glue (active water-resistant glue), when moisture or humidity enters the optical cable, the inner water-resistant glue 003 can rapidly absorb water and swell to form gel, so that all gaps are blocked, and the formation of water flow channels is avoided; the waterproof layer 004 is a waterproof tape and is coated on the waterproof adhesive 003; the reinforcing layer 005 is made of water-blocking aramid fiber (with high elastic modulus, so that the optical cable has good bending property and flexibility) and is coated on the water-blocking layer 004; the inner sheath 006 is made of polyethylene or neoprene and is sleeved on the reinforcing layer 005; the armor 007 is a tube woven by stainless steel wires, and plays roles in enhancing the wear resistance of the optical cable, preventing the damage of underwater organisms and improving the water pressure resistance, and the armor 007 covers the inner sheath 006; the outer waterproof glue 008 is coated on the armor 007 and is a sealing waterproof type waterproof filling glue (static passive waterproof filling glue), so that good contact tightness can be formed between the metal braided armor 007 and the outer sheath 009, and the effect of preventing water molecules from penetrating is achieved; the outer sheath 009 is made of polyurethane, and is sleeved on the outer water-resistant glue 008.

Further, the optical cable is of a central beam tube structure and further comprises a stranded body 002, wherein the stranded body 002 is formed by spirally twisting an optical fiber 001 and a tight cladding thereof; the optical fiber 001 is coated by a tight cladding, and the tight cladding is made of polyamide, polyvinyl chloride or low-smoke halogen-free flame retardant polyolefin.

Furthermore, the water-resistant layer 004 is a double-sided water-resistant tape with a composite film, is formed by sequentially compounding polyester film-polyester fiber non-manufacturing cloth-high water-absorbing swelling powder-polyester fiber non-woven cloth, and has high water absorption, high heat resistance and high chemical stability.

Preferably, the reinforcing layer 005 is doped with water-blocking powder, and the water-blocking powder is decomposed when meeting water, so as to generate a colloid, thereby realizing the water-blocking requirement in the cable core.

Furthermore, the reusable light watertight optical cable provided by the application has a plurality of different specifications, and the thicknesses of all layers of the optical cable with different specifications are different.

The manufacturing method of the reusable light watertight optical cable comprises the following steps:

1. feeding the tightly-clad material and the optical fiber 001 into an extruder together to extrude the tightly-clad optical fiber;

2. spiral twisting tightly-wrapped optical fibers into a twisted body 002 under the paying-off tension of 20g, filling water-blocking glue 003 at gaps of the twisted body 002, and longitudinally wrapping the twisted body 002 by using a water-blocking tape to form a water-blocking layer 004 so as to keep the rounding and stability of a twisted structure;

3. the waterproof layer 004 is spirally twisted with waterproof type aramid fiber to form a reinforcing layer 005, and then the reinforcing layer 005 is sent into an extruder for extrusion molding of an inner sheath 006;

4. the outer sheath 006 is coated with a woven armor 007 and a water-resistant sealant to form an outer water-resistant sealant 008, which is fed into an extruder to extrude the outer sheath 009.

Preferably, the optical fiber 001 is a single-mode optical fiber or a multimode optical fiber.

Preferably, as shown in fig. 2, the optical cable of the present application further includes a loose tube 010, and the loose tube 010 is sleeved on the inner waterproof glue 003.

The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:

the technical problems that the hydraulic resistance of the optical cable under high water pressure is poor and the optical cable is not easy to repeatedly retract and release and recycle in the prior art are solved, and the technical effects that the optical cable can work under high water pressure and is easy to repeatedly retract and release and recycle are realized.

Example two

Considering that the optical cable used in water is easy to damage due to the complex environment in water, the whole cable may need to be replaced for safety when the optical cable is partially damaged and is reused, the cost is high, and certain resource waste is caused; in order to solve the above problems, the embodiment of the present application adds the protective sheath 100 on the basis of the above embodiment, specifically:

as shown in fig. 3, the protective sheath tube 100 is in a tubular shape, and is preferably made of polyurethane, and is sleeved on the outer sheath 009; the inner diameter of the protective sheath tube 100 is 5 to 10 mm larger than the outer diameter of the outer sheath 009; one end of the protective sheath 100 is provided with a groove 110, the other end is provided with a convex ring 120, the groove 110 and the convex ring 120 can be mutually embedded, and the groove 110 and the convex ring 120 of two adjacent protective sheaths 100 can be combined together in an inserting way; the overall length of the protective sheath 100 on one cable is approximately equal to the length of the cable; in actual use, the single protective sheath 100 is replaced after the protective sheath 100 is damaged.

Preferably, the collar 120 is an interference fit with the recess 110.

Preferably, the length of the protective sheathing 100 is 0.3 to 2 meters.

Preferably, as shown in fig. 4, the outer side surface of the protective sheath 100 is a curved surface, and the curved surface of the side wall of the protective sheath 100 is convex.

Preferably, as shown in fig. 5, in order to facilitate the assembly and disassembly of the protective sheath 100, the protective sheath 100 is further provided with an insertion hole 130, the insertion hole 130 is a through hole, and the length direction of the insertion hole 130 is the same as the axial direction of the protective sheath 100; as shown in fig. 6, the connection string 140 connects all the protective sheathing pipes 100 in series through the penetration holes 130; the connecting rope 140 is a steel rope or other nonmetallic rope body; in actual use, after the protective sheath 100 on the same optical cable is spliced, two ends of the connecting rope 140 are fixed on the protective sheath 100 at two ends;

when the optical cable is recovered, after the end of the connecting rope 140 is detached, the protective sheath tube 100 can be detached one by one, and the outer sheath 009 and each layer inside the protective sheath tube (for convenience in description, the outer sheath 009 and each layer combination inside the protective sheath tube are hereinafter defined as an optical cable main body) can be directly drawn out and wound on a winding drum for recovery; the protective sheath 100 can also be directly wound on a reel for recovery (the protective sheath 100 is detached from each other during winding) after the optical cable main body is detached (the protective sheath 100 is still strung on the connecting rope 140).

Preferably, in order to reduce the abrasion of the penetration hole 130, the penetration hole 130 is internally provided with an abrasion-proof pipe, and the abrasion-proof pipe is a metal pipe.

Preferably, two penetration holes 130 are formed in one protective sheath 100, and the two penetration holes 130 are symmetrically arranged; the number of the connecting ropes 140 on one optical cable is two, and the two connecting ropes 140 can ensure that the protective sheath tube 100 which is strung into a string is more stable, and is also easier to remove from the outer sheath 009 and to be sleeved on the outer sheath 009 again.

To facilitate the loading and unloading of the protective sheathing tube 100, it is preferable to use a sheathing assembly 300 in combination, as shown in fig. 9, the sheathing assembly 300 including a holder 310, a first support ring 320, a second support ring 330, a connection post 340, a rotating roller 350, a roller support assembly 360, and a pressing post assembly 370; the support 310 is preferably a rod body, and plays a role in supporting and positioning; the first supporting ring 320 is annular, is fixed on the top of the support 310, and is used for supporting and positioning the extrusion column assembly 370, the extrusion column assembly 370 is a combination of a plurality of telescopic rods uniformly distributed on the first supporting ring 320, and the telescopic rods are simultaneously elongated to fix the optical cable; the bottom ends of the connecting columns 340 are fixed at the top of the first supporting ring 320, the top ends of the connecting columns are fixed at the bottom of the second supporting ring 330, the number of the connecting columns is a plurality of, and the intervals between two adjacent connecting columns 340 are equal; the second support ring 330 serves to support and position the rotating drum 350 and drum support assembly 360; the rotary drum 350 is rotatably and fixedly connected to the drum support assembly 360; the drum support assembly 360 is positioned on the second support ring 330; the number of the rotating drums 350 is three or more, and motors are built in, so that the side walls of the rotating drums 350 are tightly attached to the optical cable when the optical cable is used. Before the optical cable is laid, the optical cable main body is penetrated into the bunched protective sleeve 100, then the optical cable (the optical cable comprises the optical cable main body and the bunched protective sleeve 100) passes through the sheath assembly and disassembly assembly 300, and the control rod rotating roller 350 intermittently rotates and the extrusion column assembly 370 intermittently operates, so that the splicing and assembly of the protective sleeve 100 on the optical cable main body can be realized; when the protective sheathing pipe 100 needs to be disassembled, the rotating roller 350 of the sheath assembly and disassembly assembly 300 can be used for intermittently rotating and the extrusion column assembly 370 can be intermittently operated to disassemble the protective sheathing pipe 100 (compared with the case that the combined protective sheathing pipe 100 is directly rolled up on the roller for disassembling the protective sheathing pipe 100, the disassembly of the protective sheathing pipe 100 is less damaged).

Preferably, the roller supporting assembly 360 includes a supporting frame and a telescopic rod, the rotating roller 350 is rotatably connected to the supporting frame, the telescopic rod is an electric telescopic rod, one end of the telescopic rod is fixed to the supporting frame, and the other end of the telescopic rod is fixed to the second supporting ring 330; the axial direction of the telescopic rod is perpendicular to the axial direction of the second supporting ring 330; when in actual use, the telescopic rod can be controlled to stretch according to the diameter of the optical cable, so that the disassembly and assembly work can be conveniently carried out.

Preferably, the rotating drum 350 is rubber.

In order to ensure that the whole optical cable is light enough, the protective sheath 100 is preferably hollow, and the reinforcing ribs 160 are arranged inside.

Example III

Considering that the optical cable arranged at the river bottom or the shallow sea bottom is easy to be parasitized by aquatic organisms on the outer surface of the optical cable to influence the service life, and the periodic cleaning is difficult to be completed because a part of the optical cable is closely attached to the water bottom; therefore, it is preferable that the connecting string 140 has an elastic force capable of being extended and contracted, and includes a string body 141 and an elastic force portion 142, the string body 141 is a steel rope, the string body 141 is a tension spring and is capable of passing through the insertion hole 130, and the string body 141 and the elastic force portion 142 are alternately spliced to form the connecting string 140; when cleaning is needed, the matched sheath rotating assembly 200 can realize the cleaning of the optical cable; as shown in fig. 7 and 8, the sheath rotating assembly 200 includes a curved plate 210, a positioning block 220, a rotating wheel 230, and a cleaning brush 240; the arc-shaped plate 210 is a plate body with a C-shaped cross section and plays a role of bearing and supporting; the positioning block 220 is fixed on the convex surface of the arc plate 210, and is fixed on the underwater robot capable of flexibly moving at the water bottom; the rotating wheel 230 is a cylindrical wheel body, a plurality of motors are arranged in the rotating wheel, the rotating wheel is fixedly connected to the arc-shaped plate 210 in a rotatable manner around the axis of the rotating wheel, the axial direction of the rotating wheel is the same as the axial direction of the arc-shaped plate 210, and the rotating wheel is spatially close to the concave surface of the arc-shaped plate 210; the cleaning brush 240 is fixed on the concave surface of the arc plate 210 and is used for brushing the optical cable; in actual use, the underwater robot drives the arc plate 210 to be buckled on the optical cable to enable the rotating wheel 230 to be clung to the protective sheath tube 100, then the rotating wheel 230 is controlled to rotate to drive the protective sheath tube 100 to rotate so as to clean the circumference of the optical cable, and then the protective sheath tube 100 is cleaned one by one.

Preferably, the rotating wheel 230 is made of rubber.

Example IV

In order to ensure that the optical cable of the present application is light in weight and is convenient to be disposed, recycled and reused, and simultaneously ensure that the optical cable of the present application is not easily affected by the submerged current and swings at will to affect the stability of the optical cable joint, preferably, as shown in fig. 10, the protective sheath 100 is a hollow structure pipe body, a tubular space (for convenience of description, hereinafter, the tubular space is referred to as a tubular space) is provided, a reinforcing rib 160 is provided in the tubular space, one side of the tubular space is provided with an annular water injection port 150, and after the protective sheath 100 is spliced, the distance between the water injection ports 150 is greater than or equal to the length of one protective sheath 100; when the optical cable is actually used, after the optical cable is filled with water, the water gradually fills the tubular space to become the counterweight of the optical cable, so that the influence of the water dark current on the optical cable is reduced; when the optical cable is fished out of the water (as required for practical reuse), water in the tubular space flows out of the water filling port 150.

In order to avoid the influence of living things living in the tubular space to the service life of the optical cable due to the long-time opening of the water injection port 150 in the inner space of the protective sheath tube 100, it is preferable that a sealing ring 170 is fixed on the surface of the tubular space near the outer sheath 009 as shown in fig. 13 and 14; the closed ring 170 is a metal hollow ring, and the closed ring 170 is arranged close to the water filling port 150; in actual use, the sealing ring 170 deforms under the influence of water pressure, so that the water filling port 150 is plugged after the optical cable enters a specific depth (preferably more than 10 meters) to prevent organisms from entering the tubular space of the protective sheath tube 100, and the water filling port 150 is automatically opened under the influence of water pressure after the optical cable is lifted.

Further, the closed loop 170 includes a bottom plate 171, a first arcuate plate 172, and a second arcuate plate 173; the bottom plate 171, the first arc plate 172 and the second arc plate 173 are all annular, and are spliced together to form an annular space with a cross section similar to a triangle; the bottom plate 171 is fixed on the surface of the tubular space near the outer sheath 009; when the closed ring 170 is in natural air, the first arc plate 172 and the second arc plate 173 are in the convex state as shown in fig. 12, and after entering water and reaching a specific depth (preferably more than 10 meters, the thickness of the closed ring 170 can be changed according to actual requirements to control the closing depth of the water filling port 150), as shown in fig. 11 and 14, the first arc plate 172 and the second arc plate 173 are transformed from the convex state to the concave state under the influence of water pressure, so that the top of the closed ring 170 is abutted against the wall of the tubular space of the protective sleeve 100 far away from the outer sleeve 009, and the tubular space of the protective sleeve 100 is closed.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a light-duty watertight optical cable of reuse which characterized in that: the waterproof protective device comprises an optical fiber, an internal waterproof adhesive, a waterproof layer, a reinforcing layer, an inner sheath, an armor layer, an external waterproof adhesive and an outer sheath;

the outer sheath is made of polyurethane and is sleeved on the outer water-blocking adhesive; the optical cable also comprises a loose tube, wherein the loose tube is sleeved on the inner water-blocking adhesive;

the protective sleeve is also included;

the whole protective sheath pipe is tubular and sleeved on the outer sheath;

one end of the protective sleeve pipe is provided with a groove, the other end of the protective sleeve pipe is provided with a convex ring, the groove and the convex ring can be mutually embedded, and the groove and the convex ring of two adjacent protective sleeve pipes can be combined together in an inserting mode;

the protective sleeve is a hollow structure pipe body, a tubular space is arranged in the protective sleeve, a reinforcing rib is arranged in the tubular space, one side of the tubular space is provided with an annular water injection port, and after the protective sleeve is spliced, the distance between the water injection ports is greater than or equal to the length of one protective sleeve; when the optical cable is used, after the optical cable is filled with water, the water gradually fills the tubular space to become the counterweight of the optical cable, so that the influence of the water dark current on the optical cable is reduced; when the optical cable is fished out of the water, the water in the tubular space flows out from the water injection port;

a closed ring is fixed on the surface, close to the outer sheath, of the tubular space;

2. The reusable light watertight cable of claim 1 wherein: the optical cable is of a central beam tube structure and further comprises a stranded body, wherein the stranded body is formed by spirally twisting an optical fiber and a tight cladding thereof; the optical fiber is coated by the tight cladding, and the tight cladding is made of polyamide, polyvinyl chloride or low-smoke halogen-free flame retardant polyolefin.

3. The reusable light watertight cable of claim 1 wherein: the outer sheath and all parts inside the outer sheath are optical cable main bodies;

the connecting rope is a steel rope or other nonmetallic rope body;

4. A reusable light watertight cable according to claim 1 or 3 wherein: two penetration holes are formed in the protective sleeve, and the two penetration holes are symmetrically formed;

5. The reusable light watertight cable of claim 4 wherein: the protective sleeve is assembled and disassembled by using a sleeve assembling and disassembling assembly, and the sleeve assembling and disassembling assembly comprises a support, a first supporting ring, a second supporting ring, a connecting column, a rotary roller, a roller supporting assembly and an extrusion column assembly;

the support plays a role in supporting and positioning;

the roller support assembly is positioned on the second support ring;