CN201503729U

CN201503729U - Digital intelligent through earth wire

Info

Publication number: CN201503729U
Application number: CN200920227515XU
Authority: CN
Inventors: 郑玉顺; 曾学忠; 孙章栓; 郑建强; 赵占红; 宋小燕; 郭水龙; 季莹; 郑作海; 孙大帅
Original assignee: CHANGJIANG HI-TECH CABLE Co Ltd
Current assignee: CHANGJIANG HI-TECH CABLE Co Ltd
Priority date: 2009-08-19
Filing date: 2009-08-19
Publication date: 2010-06-09
Anticipated expiration: 2019-08-19

Abstract

The utility model relates to a digital intelligent through earth wire which comprises a conductor. An optical fiber is arranged outside the conductor; and the conductor and the optical fiber are coated with a plastic jacket. The digital intelligent through earth wire adopts the structure that the conductor is coated with the plastic jacket, and lead is not used, so that the pollution to the environment is reduced during the production and use; and when the high-electricity jacket is extruded and enwrapped, the optical fiber is arranged outside the conductor, positioned between single wires of the conductor and matched with relevant equipment so as to transmit digital signals, thereby playing an intelligent online monitoring role.

Description

A kind of digital intelligent type Through ground wire

Technical field

The utility model relates to a kind of earth connection, and particularly a kind of railway combined grounding system all fronts electromechanical equipment that is used for is unified the cable of ground connection.

Background technology

The railway system is the unified ground connection of electromechanical equipment completely, each working point earthing potential of large-scale Railway Electric system is consistent substantially, make the system equipment grounding safety reliable, eliminate because the current potential imbalance that the potential difference between the distinct device causes realizes the effective reliable protection to personnel and equipment.What used is the sheath copper cash in the past; promptly outside copper stranded conductor, coat the layer of copper cover; utilize plumbous electric conductivity and anti-soil corrosion performance satisfies the requirement of ground wire but sheath copper in use has following problem: plumbous can polluting soil, water; do not have to recognize producing and also be to use link all not meet environmental protection requirement, oneself prohibites national environmental protection department oneself and railway authorities and continues to use.

Summary of the invention

The purpose of this utility model is to provide pollution-free in a kind of production and the use, the digital intelligent type Through ground wire that ground connection is effective.

The purpose of this utility model is achieved in that a kind of digital intelligent type Through ground wire, comprises conductor, and conductor is provided with an optical fiber outward, and conductor and optical fiber are coated with plastic sheath.

The digital intelligent type Through ground wire that the utility model provides adopts conductor to coat the structure of plastic sheath outward, does not re-use lead, is producing and is using link all to reduce pollution to environment; Put an optical fiber when extruding high electrically sheath outside conductor, optical fiber is placed between the conductor single line, match with relevant device, but transmission of digital signals plays the effect of intelligent on-line monitoring.

The utility model also has following operating characteristic:

1. product mechanical strength height, crooking ability and strong shock resistance.Can be used for shaking comparatively violent, the comparatively abominable railway transportation environment of service condition.

2. the temperature of laying of product is not less than-10 ℃.

3. the environment for use temperature range of product :-40 ℃～+ 60 ℃, conductor long-term work temperature is no more than 70 ℃.

The permission bending radius of product should be not less than 15 times of product external diameter.

4. the product material therefor is all nontoxic, can not pollute environment.

5. the circuit situation is grasped in online at any time monitoring at any time.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

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

Embodiment

As shown in Figure 1, the utility model comprises conductor 1, is provided with an optical fiber 3 outside the conductor 1, and conductor 1 and optical fiber 3 are coated with plastic sheath 2.

In the utility model:

Conductor 1 adopts the soft circular copper wire of TR type that meets GB 3953 regulations.Conductor should adopt the 2nd kind of stranded conductor of GB/T 3956 regulations.

Outermost layer twisting pitch when conductor 1 is stranded is 10～15 times of stranded external diameter, and the internal layer twisting pitch is to be not more than 20 times of the stranded external diameter of internal layer.The outermost layer direction of lay is a dextrad, and adjacent layer strand is on the contrary.Conductive surface after stranded should be bright and clean, non-oxidation, no burr, no greasy dirt, do not have the single line of projection or fracture.The permission single conductor continues, and the tensile strength at the place of continuing must not be less than nothing 90% of the conductor tensile strength that continues, and test method should meet the GB/T4909.3 regulation.Stranded conductor does not allow whole strand to continue, and participates in stranded single conductor and is not less than 350mm with the distance between adjacent two joints in one deck.

Plastic sheath 2, high electrically plastic sheath 2 nominal thickness are 1.4mm.

Any point minimum thickness of plastic sheath 2 should be not less than 1.2mm, and test method is not less than the kind of calliper of 0.02mm for adopting precision.

High electrically plastic sheath is extruded and is required to coat closely smooth surface rounding, no bubble, come unstuck into water, scratch phenomenon.When extruding high electrically sheath, outside conductor, put an optical fiber, optical fiber be placed on the conductor single line this, play the on-line monitoring effect.

The mechanical and physical performance of plastic casing material and electrical property should meet the regulation of following table.

The utility model electric property and test method are as follows:

Claims

1. a digital intelligent type Through ground wire comprises conductor (1), it is characterized in that: conductor (1) is outer to be provided with an optical fiber (3), and conductor (1) and optical fiber (3) are coated with plastic sheath (2).