CN216849350U - Photoelectric hybrid low-voltage cable - Google Patents

Abstract

The utility model relates to a low tension cable technical field, concretely relates to mixed low tension cable of photoelectricity. The optical fiber unit, the PP filling rope and the insulated copper wire are subjected to SZ twisting around the reinforcing piece to form a whole, water-blocking cable paste is filled in the whole, and the bundled yarns are bundled into a cable; the optical fiber unit comprises an optical fiber and a PBT loose tube, the optical fiber is arranged in the PBT loose tube, and a gap between the optical fiber and the PBT loose tube is filled with optical fiber paste; the insulated copper wire comprises a soft copper wire bundled by monofilaments drawn by a multi-head wire drawing machine, and a cross-linked polyethylene insulated sheath is sleeved on the outer side of the soft copper wire; the outer side of the binding yarn is provided with a composite belt, and the outer side of the composite belt is provided with a protective sleeve. The twisted conductor has smooth appearance and no nose; copper leakage and thin local conductor insulation can not occur in the insulation process; the condition that the insulated conductor is adhered to the composite tape is avoided, and the mechanical performance of the insulated conductor is improved.

Description

Photoelectric hybrid low-voltage cable

Technical Field

The utility model relates to a low tension cable technical field, concretely relates to mixed low tension cable of photoelectricity.

Background

The photoelectric hybrid low-voltage cable is favored by various operators due to excellent signal transmission and equipment power supply performance, the design of the cable in the traditional production process is carried out according to the process design of an optical cable, an insulated wire is carried out by single wires drawn by a common small drawing machine, and because the annealing temperature of the single wires drawn by the common small drawing machine is not completely consistent, the twisted conductor is easy to disperse and generate noses, meanwhile, the local insulation film is easy to generate during insulation, and the following conditions are caused to occur:

1. copper leakage breakdown can occur during insulation production;

2. because the insulated copper wire and the insulated copper wire, the insulated copper wire and the reinforcer and the insulated copper wire and the composite belt are in close contact during production, even if the local insulation thin and unbroken part is in the insulation production process, the cable can be broken down mutually after production and even the sheath is finished, so that the cable cannot be used, and the waste is caused to a greater extent;

3. because the composite tape is coated with the PE plastic, the situation that the insulated wire and the inner layer of the composite tape are coated with the PE plastic and are bonded and difficult to peel off can be caused during the production of the sheath process;

4. because of having more strict requirement to the drawing in laying process, so need select for use the reinforcement of various specifications according to the tensile requirement during the design, in order to guarantee insulating properties moreover and increased wire insulation thickness, the product external diameter that leads to without exception is great, not only extravagant raw and other materials, production efficiency is low, greatly increased lays the degree of difficulty, hardly like laying optical cable long distance and convenient laying moreover.

SUMMERY OF THE UTILITY MODEL

The invention provides the photoelectric mixed low-voltage cable in order to make up the defects of the prior art, the produced cable is attractive in appearance, small in outer diameter, material-saving, stable and reliable in product quality, reliable in tensile property and easy to lay, and the problems in the prior art are solved.

The utility model provides a technical scheme that its technical problem adopted is: a photoelectric hybrid low-voltage cable comprises an optical fiber unit, a PP (polypropylene) filling rope, an insulated copper wire, a reinforcing member and a binding yarn, wherein the optical fiber unit, the PP filling rope and the insulated copper wire are subjected to SZ (SZ) stranding around the reinforcing member to form a whole, water-blocking cable paste is filled in the whole, and the binding yarn is used for binding the whole into a cable;

the optical fiber unit comprises an optical fiber and a PBT loose tube, the optical fiber is arranged in the PBT loose tube, and a gap between the optical fiber and the PBT loose tube is filled with optical fiber paste;

the insulated copper wire comprises a soft copper wire bundled by monofilaments drawn by a multi-head drawing machine, and a cross-linked polyethylene insulating sheath is sleeved on the outer side of the soft copper wire;

the outer side of the binding yarn is provided with a composite belt, and the outer side of the composite belt is provided with a protective sleeve.

Preferably, the composite belt is an aluminum-plastic composite belt or a steel-plastic composite belt.

Preferably, the protective sleeve is made of high-density polyethylene material.

Preferably, the number of the optical fiber units is more than or equal to one, and the number of the insulated copper wires is more than or equal to two.

The utility model has the advantages that: the utility model provides a photoelectric hybrid low-voltage cable, compared with the traditional method of twisting a copper wire conductor by using a plurality of single copper wires, the twisted conductor has smooth appearance and no nose; copper leakage and local conductor insulation thin conditions caused by conductor reasons can not occur in the insulation process; natural cross-linked polyethylene is adopted to replace common polyethylene, so that the condition that the insulated conductor is adhered to the composite tape is avoided, and the mechanical property of the insulated conductor is greatly improved; the outer diameter of the reinforcing part can be reduced in design, so that the outer diameter of the whole cable is reduced, and the cable is easier to lay.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a schematic diagram of the internal structure of the present invention.

The optical fiber cable comprises a reinforcing component 1, a reinforcing component 2, a filling rope 3, an optical fiber unit 4, an insulating copper wire 5, a water-blocking cable paste 6, a binding yarn 7, a composite tape 8, a protective sleeve 301, an optical fiber 302, an optical fiber paste 303, a PBT loose tube 401, a soft copper wire 402 and a cross-linked polyethylene insulating protective sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The photoelectric hybrid low-voltage cable shown in fig. 1-3 comprises an optical fiber unit 3, a PP filling rope 2, an insulated copper wire 4, a reinforcing member 1 and a binding yarn 6, wherein the optical fiber unit 3, the PP filling rope 2 and the insulated copper wire 4 are subjected to SZ stranding around the reinforcing member to form a whole, are filled with a water-blocking cable paste 5, and are bundled by the binding yarn 6 to form a cable;

the optical fiber unit 3 comprises an optical fiber 301 and a PBT loose tube 303, wherein the optical fiber 301 is arranged in the PBT loose tube 303, and a gap between the optical fiber 301 and the PBT loose tube 303 is filled with optical fiber paste 302;

the insulated copper wire 4 comprises a soft copper wire 401 which is formed by bundling monofilaments drawn by a multi-head drawing machine, and a cross-linked polyethylene insulating sheath 402 is sleeved on the outer side of the soft copper wire 401;

the composite belt 7 is arranged on the outer side of the binding yarn 6, and the protective sleeve 8 is arranged on the outer side of the composite belt 7.

In the present embodiment, the composite tape 7 is an aluminum-plastic composite tape 7 or a steel-plastic composite tape 7.

In this embodiment, the sheath tube 8 is made of high density polyethylene.

In this embodiment, the number of the optical fiber units is equal to or greater than one, and the number of the insulated copper wires 4 is equal to or greater than two.

The utility model provides a pair of insulating copper line's among mixed low voltage cable of photoelectricity forming process as follows:

s1, calculating: calculating the number of monofilaments required by a cable conductor according to the section of the insulated copper wire conductor required to be produced, and distributing the number of the monofilaments contained in a wire harness unit according to the GB/T3956-2008 standard;

s2, drawing: according to the GB/T3956-2008 standard and the plan section length, the wire drawing length is confirmed, the length of a required wire harness unit is accurately controlled through an encoder metering system, and the wire harness unit is drawn into the required length through a wire drawing machine to obtain the drawn wire harness unit;

s3, harness: according to the process requirements, determining the pitch size of each section finally, adjusting equipment parameters and paying-off tension, and twisting the conductor.

S4, copper wire insulation: and (4) insulating and protecting the conductor of the wire according to the process requirement.

S5, cabling: cabling is carried out according to the process requirements.

S6, sheath: and (4) cabling sheath according to the process requirement.

The wire drawing machine S2 is a multi-head wire drawing machine, and the length of the beam line unit section can be controlled by a high-precision encoder meter counter arranged on the multi-head wire drawing machine; s4, the insulating material is a natural cross-linked polyethylene sheathing compound.

The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.

Claims (4)

1. A photoelectric hybrid low-voltage cable comprises an optical fiber unit, a PP (polypropylene) filling rope, an insulated copper wire, a reinforcing member and a binding yarn, wherein the optical fiber unit, the PP filling rope and the insulated copper wire are subjected to SZ (SZ) stranding around the reinforcing member to form a whole, water-blocking cable paste is filled in the whole, and the binding yarn is used for binding the whole into a cable;

the method is characterized in that: the optical fiber unit comprises an optical fiber and a PBT loose tube, the optical fiber is arranged in the PBT loose tube, and a gap between the optical fiber and the PBT loose tube is filled with optical fiber paste;

the insulated copper wire comprises a soft copper wire bundled by monofilaments drawn by a multi-head drawing machine, and a cross-linked polyethylene insulating sheath is sleeved on the outer side of the soft copper wire;

the outer side of the binding yarn is provided with a composite belt, and the outer side of the composite belt is provided with a protective sleeve.

2. The opto-electric hybrid low voltage cable according to claim 1, characterized in that: the composite belt is an aluminum-plastic composite belt or a steel-plastic composite belt.

3. The opto-electric hybrid low-voltage cable according to claim 2, characterized in that: the protective sleeve is made of high-density polyethylene material.

4. The opto-electric hybrid low voltage cable according to claim 3, characterized in that: the number of the optical fiber units is more than or equal to one, and the number of the insulated copper wires is more than or equal to two.

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