CN205282155U

CN205282155U - Compound medium voltage cable of secret type optic fibre

Info

Publication number: CN205282155U
Application number: CN201521084266.5U
Authority: CN
Inventors: 陈永峰; 陈根友
Original assignee: Wuxi Shuguang Cable Co Ltd
Current assignee: Wuxi Shuguang Cable Co Ltd
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2016-06-01
Anticipated expiration: 2025-12-23

Abstract

The utility model discloses a compound medium voltage cable of secret type optic fibre, including the cable core, be equipped with in proper order outside the cable core around covering, inner sheath and oversheath, the cable core form by the compound sinle silks transposition of three optic fibre, the compound sinle silk of optic fibre by the optical fiber unit in bosom, set up optical fiber unit outside hollow conductor and in proper order crowded packet of conductor shield, insulating layer, insulation screen, the pressure -resisting pipe outside hollow conductor constitute, be equipped with the 2nd pressure -resisting pipe between inner sheath and oversheath. The utility model has the characteristics of the external diameter is little, light in weight, and occupation space is little, with low costs, waterproof good, the security is good, the shielding is good, the crushing resistance is good etc.

Description

A kind of security type optical fiber composite medium-pressure cable

Technical field

This utility model relates to electric wire field, refers in particular to a kind of security type optical fiber composite medium-pressure cable.

Background technology

The world today is the stepped into information epoch, information has become the strategic resource of economic development and unique production factors, combine the present information transmission system and complete information service system set up with multimedia terminals such as telecommunications network, computer, videos, it has also become the important symbol of a country economic development level. Optical fiber composite cable is the important kind of one in information transmission, is mainly used as radio and launches or receive the feeder of equipment and various communication, the machine intraconnections of electronic equipment or be connected with each other line.

Optoelectronic composite cable makes transmission line suitable in broadband access network system, is a kind of novel access way, and its light harvesting fibre, transmission of electricity copper cash are in one, it is possible to the problem solving broadband access, equipment electricity consumption, signal transmission. Its conventional structure be copper conductor together with fiber unit stranding, or using the fiber unit filling part as other cables.

This technology has the drawback that easily being intercepted fiber-optic signal by people in important goal or military use causes the leakage of a state or party secret; It addition, the difference that crushing resistance existing for existing technology is very.

Utility model content

It is little that the technical problems to be solved in the utility model is to provide a kind of external diameter, lightweight, take up room little, cost is low, waterproof good, security type optical fiber composite medium-pressure cable.

For solving above-mentioned technical problem, the utility model discloses a kind of security type optical fiber composite medium-pressure cable, including cable core, outside cable core, be sequentially provided with lapping layer, inner sheath and oversheath; Described cable core is formed by three Optical Fiber Composite cores are stranded; Described Optical Fiber Composite core by the fiber unit in bosom, the hollow conductor being arranged on outside fiber unit and be extruded in the conductor shield outside hollow conductor successively, insulating barrier, insulation screen, the first compression tube are constituted; The second compression tube it is provided with between inner sheath and oversheath.

Improving further, described fiber unit is made up of the optical fiber of two placements arranged side by side and the copper pipe that is enclosed within outside optical fiber.

Improve further, the described plastic flexible pipe that the first compression tube is left-hand thread type structure.

Improving further, the second described compression tube adopts galvanized steel strip that internal layer is crossed, that outer layer is provided with PVC plastic film through insulation processing.

Compared with prior art, it has the beneficial effects that this utility model:

1, this utility model is in use, cable conductor normal power-up uses, fiber unit transmission photosignal in the middle of conductor, conductor outside due to fiber unit is charged, unless destroyed cable completely, others cannot steal the fiber-optic signal in the middle of charged conductor, is then also absent from divulging a secret as destroyed cable completely; Fiber unit is placed on cable conductor center, and the core of conduction protects optical fiber unit, can effectively prevent from being stolen signal by people from fiber unit.

2, flexible pipe has splendid waterproof, insulating properties, pull resistance, and hose surface adopts PVC material, and to the addition of fire-proof flame-retarded agent structure in PVC plastic be left-hand thread type, add tensile strength, be not easy to fracture or deform, good bending property, internal smooth structure, when connecting electric wire and easily.

3, the second compression tube adopts galvanized steel strip that internal layer is crossed, that outer layer is provided with PVC plastic film through insulation processing, has shield effectiveness function, and mechanical strength is high, compressive property is good, moistureproof and good airproof performance, it is possible to improve its bending property.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model will be further described.

As it is shown in figure 1, a kind of security type optical fiber composite medium-pressure cable, including cable core, outside cable core, it is sequentially provided with lapping layer 8, inner sheath 9 and oversheath 11; Described cable core is formed by three Optical Fiber Composite cores are stranded; Described Optical Fiber Composite core by the fiber unit in bosom, the hollow conductor 3 being arranged on outside fiber unit and be extruded in the conductor shield 4 outside hollow conductor 3 successively, insulating barrier 5, insulation screen the 6, first compression tube 7 are constituted; Fiber unit is placed on cable conductor center, and the core of conduction protects optical fiber unit, can effectively prevent from being stolen signal by people from fiber unit. The second compression tube 10 it is provided with between inner sheath 9 and oversheath 11, second compression tube 10 adopts galvanized steel strip that internal layer is crossed, that outer layer is provided with PVC plastic film through insulation processing, has shield effectiveness function, and mechanical strength is high, compressive property is good, protection against the tide and good airproof performance, it is possible to improve its bending property.

Described fiber unit is made up of the optical fiber 1 of two placements arranged side by side and the copper pipe 2 that is enclosed within outside optical fiber.

The described plastic flexible pipe that the first compression tube 7 is left-hand thread type structure, flexible pipe has splendid waterproof, insulating properties, pull resistance, hose surface adopts PVC material, and to the addition of fire-proof flame-retarded agent structure in PVC plastic be left-hand thread type, add tensile strength, be not easy to fracture or deform, good bending property, internal smooth structure, when connecting electric wire and easily.

The concrete application approach of this utility model is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the premise without departing from this utility model principle; can also making some improvement, these improvement also should be regarded as protection domain of the present utility model.

Claims

1. a security type optical fiber composite medium-pressure cable, including cable core, is sequentially provided with lapping layer (8), inner sheath (9) and oversheath (11) outside cable core; It is characterized in that: described cable core is formed by three Optical Fiber Composite cores are stranded; Described Optical Fiber Composite core by the fiber unit in bosom, the hollow conductor (3) being arranged on outside fiber unit and be extruded in the outer conductor shield (4) of hollow conductor (3) successively, insulating barrier (5), insulation screen (6), the first compression tube (7) are constituted; The second compression tube (10) it is provided with between inner sheath (9) and oversheath (11).

2. security type optical fiber composite medium-pressure cable according to claim 1, it is characterised in that: described fiber unit is made up of the optical fiber (1) of two placements arranged side by side and the copper pipe (2) that is enclosed within outside optical fiber.

3. security type optical fiber composite medium-pressure cable according to claim 1, it is characterised in that: the plastic flexible pipe that described the first compression tube (7) is left-hand thread type structure.

4. security type optical fiber composite medium-pressure cable according to claim 1, it is characterised in that: described the second compression tube (10) adopts galvanized steel strip that internal layer is crossed, that outer layer is provided with PVC plastic film through insulation processing.