CN209946474U - Direct-buried fireproof optical cable - Google Patents

Abstract

The utility model discloses a direct-burried fireproof optical cable, including the oversheath, the inside fixed mounting of oversheath has steel to mould compound area, the inside fixed mounting of steel-plastic compound area has the cable core filler, the inside fixed mounting of cable core filler has the inner sheath, the inside fixed mounting of inner sheath has the compound area of plastic-aluminum, the inside fixed mounting of compound area of plastic-aluminum has the ribbon, the inside fixed mounting of ribbon has the area of blocking water, the inside fixed mounting of area of blocking water has the packing rope, the inside fixed mounting of area of blocking water has central reinforcer, the outside fixed mounting of central reinforcer has the pine sleeve pipe with area fixed connection, the inside fixed mounting of pine sleeve pipe has fine cream. The direct-buried fireproof optical cable has the advantages of moisture resistance and high strength, and solves the problems that the existing direct-buried optical cable is buried underground and is wet underground, the direct-buried optical cable is poor in hydrolysis resistance, low in strength and poor in moisture resistance.

Description

Direct-buried fireproof optical cable

Technical Field

The utility model relates to an optical cable technical field specifically is a direct-burried fireproof optical cable.

Background

The optical cable is manufactured for meeting the performance specification of optics, machinery or environment, it utilizes one or more optical fibers placed in the coating sheath as transmission medium and can be used alone or in groups communication cable assembly, the optical cable is mainly formed by optical fiber, plastic protective sleeve and plastic outer skin, there is no metal such as gold, silver, copper aluminium in the optical cable, there is no value of recovery generally, the optical cable is a cable core formed by a certain number of optical fibers according to certain mode, the coating has a sheath, some also coats the outer jacket, a communication line used for realizing optical signal transmission, namely: the basic structure of the optical cable is generally composed of a cable core, a reinforcing steel wire, a filler, a sheath and the like, and a waterproof layer, a buffer layer, an insulated metal wire and other components are arranged according to requirements.

The existing direct-buried optical cable is buried underground and is wet, the direct-buried optical cable has poor hydrolysis resistance, low strength and poor moisture resistance, and therefore the direct-buried fireproof optical cable is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a direct-burried fireproof optical cable to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a direct-buried fireproof optical cable comprises an outer sheath, wherein a steel-plastic composite belt is fixedly arranged inside the outer sheath, the inside of the steel-plastic composite belt is fixedly provided with a cable core filler, the inside of the cable core filler is fixedly provided with an inner sheath, the inner part of the inner sheath is fixedly provided with an aluminum-plastic composite belt, the inner part of the aluminum-plastic composite belt is fixedly provided with a binding belt, a water-blocking tape is fixedly arranged inside the binding belt, a filling rope is fixedly arranged inside the water-blocking tape, a central reinforcing element is fixedly arranged inside the water-blocking tape, a loose tube fixedly connected with the water-blocking tape is fixedly arranged outside the central reinforcing element, the waterproof structure is characterized in that the loose tube is fixedly provided with fiber paste inside, the colored coated optical fiber is fixedly arranged inside the fiber paste, and the water blocking yarn fixedly connected with the water blocking tape is fixedly arranged on the outer side of the central reinforcing element.

Preferably, the central reinforcing member is a metal reinforcing core, and the central reinforcing member is located at the central position of the water blocking tape.

Preferably, the two sides of the steel-plastic composite belt are both plated with chromium-coated plastics, and the steel-plastic composite belt is longitudinally wrapped outside the cable core filler.

Preferably, the filling rope is positioned at the top of the central reinforcing element, the number of the loose tubes is four, the four loose tubes are distributed in an annular shape at equal intervals, and the diameter of each loose tube is the same as that of the filling rope.

Preferably, the filling rope and the loose tube are twisted with the center of the center reinforcing element, and the water blocking yarn is located in a gap between the filling rope and the loose tube.

Preferably, the colored coated optical fibers are uniformly distributed in the fiber paste at equal intervals, and the number of the colored coated optical fibers is twelve.

Compared with the prior art, the beneficial effects of the utility model are that: this direct-burried fireproof optical cable, it has good hydrolysis resistance and higher intensity to have through the pine sleeve pipe, be filled with fine cream in the pine sleeve pipe, key protection is provided to the optical fiber, good anti lateral pressure nature and compliance, oversheath and inner sheath are low smoke and zero halogen sheath, low smoke and zero halogen sheath have good fire behaviour, single steel wire is central reinforcing element, the cable core is filled completely to the inside fine cream of pine sleeve pipe, plastic-coated aluminum-plastic composite strip is aluminium strip (APL) dampproof course, compound two-sided chromium plating plastic-coated steel strip (PSP) of steel-plastic composite strip improves the moisture resistance ability of optical cable, the packing rope is twisted with the central reinforcing element centre of a circle with the pine sleeve pipe, can effectual intensity of strengthening the optical cable, thereby reached damp-proofing and the high mesh of intensity.

Drawings

Fig. 1 is a schematic structural view of a directly-buried fireproof optical cable according to the present invention;

fig. 2 is a left side view of the directly buried fireproof optical cable structure of the present invention.

In the figure: 1-an outer sheath; 2-steel-plastic composite belts; 3-cable core filler; 4-inner sheath; 5-an aluminum-plastic composite belt; 6-binding a belt; 7-water blocking tape; 8-water blocking yarn; 9-loosening the sleeve; 10-a central reinforcing element; 11-a filler rope; 12-colored coated optical fiber; 13-fiber ointment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides an embodiment: a direct-buried fireproof optical cable comprises an outer sheath 1, wherein a steel-plastic composite belt 2 is fixedly installed inside the outer sheath 1, a cable core filler 3 is fixedly installed inside the steel-plastic composite belt 2, both sides of the steel-plastic composite belt 2 are coated with chromium coating plastics, the steel-plastic composite belt 2 is longitudinally wrapped outside the cable core filler 3, an inner sheath 4 is fixedly installed inside the cable core filler 3, an aluminum-plastic composite belt 5 is fixedly installed inside the inner sheath 4, a binding belt 6 is fixedly installed inside the aluminum-plastic composite belt 5, a water blocking belt 7 is fixedly installed inside the binding belt 6, a filling rope 11 is fixedly installed inside the water blocking belt 7, a central reinforcing element 10 is fixedly installed inside the water blocking belt 7, the central reinforcing element 10 is a metal reinforcing core, the central reinforcing element 10 is located at the central position of the water blocking belt 7, a loose tube 9 fixedly connected with the water blocking belt 7 is fixedly installed outside the central reinforcing element 10, the filling rope 11 is positioned at the top of the central reinforcing element 10, the number of the loose tubes 9 is four, the four loose tubes 9 are distributed in an equidistant annular mode, the diameter of the loose tube 9 is the same as that of the filling rope 11, the loose tube 9 is internally and fixedly provided with the fiber paste 13, the colored coated optical fibers 12 are uniformly distributed in the fiber paste 13 in an equidistant mode, the number of the colored coated optical fibers 12 is twelve, the colored coated optical fibers 12 are fixedly arranged in the fiber paste 13, the outer side of the central reinforcing element 10 is fixedly provided with the water blocking yarn 8 fixedly connected with the water blocking tape 7, the filling rope 11 and the loose tube 9 are twisted around the center of the central reinforcing element 10, the water blocking yarn 8 is positioned in a gap between the filling rope 11 and the loose tube 9, the loose tube 9 has good strength and high strength, the fiber paste 13 is filled in the loose tube 9 in a hydrolysis-resistant mode, critical protection is provided for the optical fibers, and good lateral pressure resistance and flexibility, the outer sheath 1 and the inner sheath 4 are low-smoke halogen-free sheaths which have good flame retardant property, a single steel wire is used as a central reinforcing element 10, a fiber paste 13 in the loose tube 9 is completely filled in a cable core, the plastic-coated aluminum-plastic composite belt 5 is an aluminum belt APL (aluminum tape APL) dampproof layer, the 3-sided chromium-plated plastic-coated steel belt PSP of the steel-plastic composite belt improves the moisture-permeable resistance of the optical cable, the filling rope 11 and the loose tube 9 are twisted with the center of the central reinforcing element 10, the strength of the optical cable can be effectively enhanced, and the purposes of moisture resistance and high strength are achieved.

The working principle is as follows: the loose tube 9 has good hydrolysis resistance and higher strength, the loose tube 9 is filled with the fiber paste 13, the optical fiber is provided with key protection, good lateral pressure resistance and flexibility, the outer sheath 1 and the inner sheath 4 are low-smoke halogen-free sheaths which have good flame retardant property, a single steel wire is taken as a central reinforcing element 10, a fiber paste 13 in the loose tube 9 is completely filled in a cable core, the plastic-coated aluminum-plastic composite belt 5 is an aluminum belt APL (aluminum tape APL) moisture-proof layer, the double-sided chromium-plated plastic-coated steel belt PSP (plastic coated steel) of the steel-plastic composite belt 3 improves the moisture-permeable resistance of the optical cable, the filling rope 11 and the loose tube 9 are twisted by using the center of the central reinforcing element 10 to effectively strengthen the strength of the optical cable, therefore, the purposes of moisture resistance and high strength are achieved, and the problems that the existing directly-buried optical cable is buried underground and is wet, the directly-buried optical cable is poor in hydrolysis resistance, low in strength and poor in moisture resistance are solved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A buried fireproof optical cable comprises an outer sheath (1), and is characterized in that: the steel-plastic composite belt is fixedly mounted inside the outer sheath (1), a cable core filler (3) is fixedly mounted inside the steel-plastic composite belt (2), an inner sheath (4) is fixedly mounted inside the cable core filler (3), an aluminum-plastic composite belt (5) is fixedly mounted inside the inner sheath (4), a ribbon (6) is fixedly mounted inside the aluminum-plastic composite belt (5), a water blocking belt (7) is fixedly mounted inside the ribbon (6), a filling rope (11) is fixedly mounted inside the water blocking belt (7), a central reinforcing element (10) is fixedly mounted inside the water blocking belt (7), a loose tube (9) fixedly connected with the water blocking belt (7) is fixedly mounted outside the central reinforcing element (10), and a fine paste (13) is fixedly mounted inside the loose tube (9), the inner part of the fiber paste (13) is fixedly provided with a colored coated optical fiber (12), and the outer side of the central reinforcing element (10) is fixedly provided with a water blocking yarn (8) fixedly connected with the water blocking tape (7).

2. A buried fire optical cable according to claim 1, wherein: the central reinforcing element (10) is a metal reinforcing core, and the central reinforcing element (10) is positioned in the center of the water blocking tape (7).

3. A buried fire optical cable according to claim 1, wherein: the two sides of the steel-plastic composite belt (2) are plated with chromium plastic coating, and the steel-plastic composite belt (2) is longitudinally wrapped outside the cable core filler (3).

4. A buried fire optical cable according to claim 1, wherein: the filling rope (11) is positioned at the top of the central reinforcing element (10), the number of the loose tubes (9) is four, the four loose tubes (9) are distributed in an annular shape at equal intervals, and the diameter of each loose tube (9) is the same as that of the filling rope (11).

5. A buried fire optical cable according to claim 4, wherein: the filling rope (11) and the loose tube (9) are twisted by the circle center of the central reinforcing element (10), and the water blocking yarn (8) is positioned at a gap between the filling rope (11) and the loose tube (9).

6. A buried fire optical cable according to claim 1, wherein: the colored coated optical fibers (12) are uniformly distributed in the fiber paste (13) at equal intervals, and the number of the colored coated optical fibers (12) is twelve.

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