CN101706603B - Gap type filling rope and optical cable using the filling rope - Google Patents

Abstract

The invention relates to the technical field of the cable and in particular to a clearance filling rope which is characterized in that the clearance filling rope is formed by a rope body, a hollow body in the rope body and a partition body used for separating the hollow body; the hollow body and the partition body are staggered in the rope body; and the rope body, the partition body and the hollow body are integrated to form a whole; the width G of the partition body satisfies the formula 0.01m<=G<=2.99m; the width L of the hollow body satisfies the formula 0.01m<=L<=2.99m; and the width of any adjacent partition body and the width of the hollow body satisfy the formula 0.02m<=G+L<=3.00m; the thickens T of the rope body and the outside diameter D of the whole filling rope satisfy the formula 0.05m<=T/D<=0.2m; the materials forming the partition body and the rope body are mixture of polypropylene and linear low density polyethylene with a mass ratio of 1:9-5:5. The invention also discloses a cable using the filling rope. The invention has the following advantages: simple production of the filling rope, low material consumption; light produced cable weight, low cost and good performance of water speepage, side pressure impact resistance and tensile resistance.

Description

Gap type filling rope and optical cable using the filling rope

technical field

The invention relates to the technical field of optical cables, in particular to a gap-type filling rope used in the optical cable and an optical cable using the filling rope.

Background technique

With the continuous development of the communication industry, optical cables are widely used in various industries involving communication, such as cable TV network, GMS network, CDMA network, etc. The outdoor optical cables currently used mainly include central beam tube type, skeleton type, and layer stranding type; although the central beam tube type optical cable has a simple structure, due to the limited outer diameter of the beam tube, the capacity of the optical fiber placed between them is limited; in addition, the skeleton Because of its complex and expensive processing equipment, there are few manufacturers in China to produce optical cables; layer-stranded optical cables use multiple loose tubes to form optical cables, so the capacity of optical cables is quite large, and the processing is easy. , when the number of optical fibers required in the same cable is not very large, for the integrity of the cable structure, it is usually necessary to use multiple filling ropes instead of loose tubes. The filling ropes are usually made of plastic extrusion, and the plastic is synthetic or from It is refined and processed from petroleum; and with the continuous development of industrialization, petroleum as a non-renewable resource is becoming more and more scarce; therefore, the price of petroleum-related products continues to rise; therefore, the price of stranded optical cables also continues to increase; Increased costs and increased operator fees.

Contents of the invention

The purpose of the present invention is to solve the above problems and provide a gap filling rope and an optical cable using the filling rope, which can achieve the purpose of less resource utilization and cheaper products under the premise of ensuring product quality. It adopts the following technology The program achieves:

Gap filling rope is characterized in that it is composed of a rope body 11, a hollow body 13 inside the rope body 11, and a partition body 12 that separates the hollow body 13; the hollow body 13 and the partition body 12 are inside the rope body 11 Staggered distribution; the rope body 11, the partition body 12, and the hollow body 13 are in an integrated structure.

The aforementioned filling rope is characterized in that: the width G and the length of the partition body 12 satisfy: 0.01m≤G≤2.99m.

The aforementioned filling rope is characterized in that: the width L of the hollow body 13 satisfies: 0.01m≤L≤2.99m.

The aforementioned filling rope is characterized in that: the width of any adjacent partition body 12 and the width of the hollow body 13 also satisfy: 0.02m≤G+L≤3.00m.

The aforementioned filling rope is characterized in that: the thickness T of the rope body 11 and the outer diameter D of the entire filling rope 1 satisfy: 0.05≤T/D≤0.2.

Further, the aforementioned filling rope is characterized in that: the thickness T of the rope body 11 and the outer diameter D of the entire filling rope 1 satisfy: T/D=0.1.

The aforementioned filling rope is characterized in that: the partition body 12 and the rope body 11 are made of the same or different plastic materials.

Further, the above-mentioned filling rope is characterized in that: the material of the partition body 12 and the rope body 11 is polypropylene or linear low-density polyethylene or the mass ratio of polypropylene and linear low-density polyethylene is 1:9 - a mixture of 5:5.

The optical cable using the above filling rope is characterized in that it includes a loose tube 3 and at least one filling rope 1; the loose tube 3 contains at least one optical fiber 2; the loose tube 3 and the filling rope 1 surround the central strength member 6. A strand is formed by staggering left and right helices or a single left-handed helix or a single right-handed helix;

The above-mentioned optical cable is characterized in that: the optical fiber 2 is located in the optical fiber ribbon.

The above-mentioned optical cable is characterized in that: the optical fiber 2 is a single-mode optical fiber or a multi-mode optical fiber or a plastic optical fiber.

The above-mentioned optical cable is characterized in that: the protective layer 4 is a single type of water-blocking tape or water-blocking yarn or non-woven fabric or composite aluminum tape or composite steel tape or glass fiber tape or mica tape.

The optical cable described above is characterized in that: the protective layer 4 is a composite layer, and the composite layer is one of the following from the inside to the outside:

A. Water blocking tape, composite aluminum tape;

B. Water blocking belt, composite steel belt;

C. Water-blocking yarn, composite aluminum strip;

D. Water-blocking yarn, composite steel belt;

E, non-woven fabric, composite aluminum strip;

F, non-woven fabric, composite steel belt;

G. Inner sheath and composite steel strip with polyethylene as the base material;

H. Water blocking tape, inner sheath with polyethylene as the base material, and composite steel strip;

I. Water-blocking yarn, inner sheath with polyethylene as the base material, and composite steel strip.

The above-mentioned optical cable is characterized in that: the material of the outer sheath layer 5 is low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or or Smokeless, halogen-free polyethylene or nylon.

The above-mentioned optical cable is characterized in that: the material of the central strengthening member 6 is metal or non-metal.

The aforementioned optical cable is characterized in that: in the helical stranded body, the pitch of the helix ranges from 45 mm to 500 mm.

Since the industry standards YD/T901-2001 and YD/T981-2009 of the Ministry of Posts and Telecommunications have stipulated the stranded optical cable, the specific requirements for the water seepage of the optical cable are stipulated, that is, any continuous 3-meter-long optical cable is placed in a 1-meter-high water column. If the other end is not allowed to seep out within 24 hours, the optical cable using this filling rope can fully meet the requirements of water seepage performance; in addition, because the rope body has a certain thickness, the optical cable is resistant to lateral pressure and impact. And tensile properties can fully meet the standard requirements.

The invention has the following advantages: the production of the filling rope is simple, light in weight and requires less consumable materials; the optical cable using the filling rope is light in weight, cheap in price and excellent in water seepage performance.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a section of a filling rope according to an embodiment of the present invention;

Fig. 2 is the enlarged front view of Fig. 1;

Fig. 3 is a schematic cross-sectional view along the A-A direction of Fig. 2;

Fig. 4 is a partial perspective view of a typical optical cable in Example 2 of the present invention;

Fig. 5 is the front view of Fig. 4;

Fig. 6 is a schematic cross-sectional view of the optical cable of Fig. 4;

FIG. 7 is another schematic cross-sectional view of the optical cable of FIG. 4 .

Detailed ways

Implementation example one

Please refer to Fig. 1, Fig. 2 and Fig. 3, the gap filling rope is characterized in that it is composed of a rope body 11, a hollow body 13 inside the rope body 11, and a partition body 12 for partitioning the hollow body 13; the hollow The body 13 and the partition body 12 are staggered inside the rope body 11; the rope body 11, the partition body 12, and the hollow body 13 are of an integrated structure; the length of the width G of the partition body 12 is 0.1 meters; the length of the width L of the hollow body 13 G+L=2.9; the thickness T of the rope body 11 is 0.35 millimeters, the outer diameter D of the filling rope 1 is 2.5 millimeters, T/D=0.14; the partition body 12 and the rope body 11 are the same plastics, the The plastic is a mixture, which is a mixture of polypropylene and linear low-density polyethylene with a mass ratio of 3:7.

Of course, for the aforementioned filling rope, the width G and length of the partition body 12 only need to satisfy: 0.01m≤G≤2.99m.

Certainly, for the aforementioned filling rope, the width L and the length of the hollow body 13 only need to satisfy: 0.01m≤L≤2.99m.

Of course, for the aforementioned filling rope, the width of any adjacent partition body 12 and the width of the hollow body 13 should also satisfy: 0.02m≤G+L≤3.00m.

Of course, for the aforementioned filling rope, the thickness T of the rope body 11 and the outer diameter D of the entire filling rope 1 should satisfy: 0.05≤T/D≤0.2.

Further, the aforementioned filling rope is characterized in that: the thickness T of the rope body 11 and the outer diameter D of the entire filling rope 1 are preferably T/D=0.1.

The aforementioned filling rope is characterized in that: the partition body 12 and the rope body 11 are made of the same or different plastic materials.

Further, the above-mentioned filling rope is characterized in that: the material of the partition body 12 and the rope body 11 is polypropylene or linear low-density polyethylene or the mass ratio of polypropylene and linear low-density polyethylene is 1:9 - a mixture of 5:5.

Implementation example two

Please refer to Fig. 4 to Fig. 7. In Fig. 4 and Fig. 5, an optical cable using the filling rope described in the first implementation example is characterized in that it includes a loose tube 3 and four filling ropes 1; the loose tube 3 It contains four optical fibers 2; the loose tube 3 and the filling rope 1 are staggered around the central reinforcement 6 to form a stranded body; the pitch of the stranded body helix is 65 mm; the stranded body is covered with a protective layer 4, The protective layer 4 is covered with an outer sheath layer 5; the optical fiber 2 is a single-mode optical fiber; the protective layer 4 is a composite aluminum strip of a single species; the material of the outer sheath layer 5 is medium-density polyethylene; the material of the central reinforcement 6 is Metal wire.

In Fig. 6, due to the existence of the partition body 12 of the filling rope and its length can be uniform or non-uniform; at the same time the existence of the hollow body 13 and its length can be uniform or non-uniform; therefore, in a certain cross-section, there appears The hollow body 13 of the stuffing rope shown in 6 is fully present.

In Fig. 7, due to the existence of the partition body 12 of the filling rope and its length can be uniform or uneven; at the same time, the existence of the hollow body 13 and its length can be uniform or uneven; therefore, in a certain cross-section, there appears 7 is a characteristic that is fully exhibited by the spacer 12 of the filler cord shown in FIG.

Since the industry standards YD/T901-2001 and YD/T981-2009 of the Ministry of Posts and Telecommunications have stipulated the stranded optical cable, the specific requirements for the water seepage of the optical cable are stipulated, that is, any continuous 3-meter-long optical cable is placed in a 1-meter-high water column. If the other end is not allowed to seep out within 24 hours, the optical cable using this filling rope can fully meet the requirements of water seepage performance; in addition, because the rope body has a certain thickness, the optical cable is resistant to lateral pressure and impact. And tensile properties can fully meet the standard requirements.

Of course, for the optical cable described in the second implementation example above, the optical fiber 2 may also be located in the optical fiber ribbon.

Certainly, for the optical cable described in the second implementation example above, the optical fiber 2 may be a single-mode optical fiber, a multi-mode optical fiber or a plastic optical fiber.

Of course, for the optical cable described in the second embodiment above, the protective layer 4 can be a single type of water-blocking tape or water-blocking yarn or non-woven fabric or composite aluminum tape or composite steel tape or glass fiber tape or mica tape.

Of course, for the optical cable described in the second implementation example above, the protective layer 4 can also be a composite layer, and the composite layer can also be one of the following in sequence from the inside to the outside:

A. Water blocking tape, composite aluminum tape;

B. Water blocking belt, composite steel belt;

C. Water-blocking yarn, composite aluminum strip;

D. Water-blocking yarn, composite steel belt;

E, non-woven fabric, composite aluminum strip;

F, non-woven fabric, composite steel belt;

G. Inner sheath and composite steel strip with polyethylene as the base material;

H. Water blocking tape, inner sheath with polyethylene as the base material, and composite steel strip;

I. Water-blocking yarn, inner sheath with polyethylene as the base material, and composite steel strip.

Of course, for the optical cable described in the second implementation example above, the material of the outer sheath layer 5 can be low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene. Vinyl or smokeless halogen free polyethylene or nylon.

Of course, for the optical cable described in the second implementation example above, the material of the central strength member 6 can be metal or non-metal; the metal is preferably steel wire or steel strand; the non-metal is preferably glass fiber rod.

Of course, the optical cable described in the second embodiment above is characterized in that: in the helical stranded body, the pitch of the helix can range from 45 mm to 500 mm.

Of course, the optical cable described in the second implementation example above is characterized by at least one filling rope 1 ; at least one optical fiber 2 is contained in the loose tube 3 .

This article specifically describes the exemplary implementation examples and the current preferred implementation modes of the present invention. It should be understood that the concept of the present invention can be implemented in various other forms, and they also fall within the protection scope of the present invention.

Claims (6)

1. Gap type filling rope is characterized in that: it is made of rope body (11), hollow body (13) inside rope body (11), and partition body (12) that cuts off hollow body (13); The hollow body (13) and the partition body (12) are interlacedly distributed inside the rope body (11); the rope body (11), the partition body (12), and the hollow body (13) are of an integrated structure; the partition body (12) The length of the width G of ) satisfies: 0.01m≤G≤2.99m; the length of the width L of the hollow body (13) satisfies: 0.01m≤L≤2.99m; any adjacent partition body (12 ) and the width of the hollow body (13) also satisfy: 0.02m≤G+L≤3.00m; the thickness T of the rope body (11) and the outer diameter D of the entire filling rope (1) satisfy: 0.05≤ T/D≤0.2; the material of the partition body (12) and the rope body (11) is a mixture of polypropylene and linear low-density polyethylene with a mass ratio of 1:9-5:5. 2. An optical cable employing the described filling rope of claim 1, characterized in that: it comprises a loose tube (3), at least one filling rope (1); the loose tube (3) contains at least one optical fiber (2); The loose tube (3) and the filling rope (1) are twisted around the central reinforcement (6) to form a stranded body in a left-right staggered helix or a single left-hand helix or a single right-hand helix; the stranded body is covered with a protective layer (4), the protective layer (4) covers the outer sheath layer (5). 3. The optical cable according to claim 2, characterized in that: the optical fiber (2) is located in the optical fiber ribbon; the optical fiber (2) is a single-mode optical fiber or a multi-mode optical fiber or a plastic optical fiber. 4. The optical cable according to claim 2, characterized in that: the protective layer (4) is a single type of water-blocking tape or water-blocking yarn or non-woven fabric or composite aluminum tape or composite steel tape or glass fiber tape or mica tape. 5. The optical cable according to claim 2, characterized in that: the protective layer (4) is a composite layer, and the composite layer is one of the following from inside to outside: A. Water blocking tape, composite aluminum tape; B. Water blocking belt, composite steel belt; C. Water-blocking yarn, composite aluminum strip; D. Water-blocking yarn, composite steel belt; E, non-woven fabric, composite aluminum strip; F, non-woven fabric, composite steel belt; G. Inner sheath and composite steel strip with polyethylene as the base material; H. Water blocking tape, inner sheath with polyethylene as the base material, and composite steel strip; I. Water-blocking yarn, inner sheath with polyethylene as the base material, and composite steel strip. 6. The optical cable according to claim 2, characterized in that: the material of the outer sheath layer (5) is low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or Low-smoke low-halogen polyethylene or smoke-free and halogen-free polyethylene or nylon; the material of the central reinforcement (6) is metal or non-metal; in the helical stranded body, the pitch range of the helix is 45 mm to 500mm.

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