CN211628726U

CN211628726U - Monitoring type medium-voltage rubber jacketed flexible cable with grounding detection line

Info

Publication number: CN211628726U
Application number: CN201921669582.7U
Authority: CN
Inventors: 钱章兴; 刘春艳; 王兵兵
Original assignee: Shanghai Lanhao Electric Power Co ltd
Current assignee: Shanghai Lanhao Electric Power Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-10-02
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a keep watch on type middling pressure rubber cover flexible cable with ground connection detection line, include: composite cable core and cladding are constituteed at the outside outer jacket of composite cable core, composite cable core comprises earth core, power sinle silk, earth connection detection sinle silk, earth core, power sinle silk, earth connection detection sinle silk transposition with one heart form, the outer jacket comprises inner sheath, supervision layer, oversheath, the inner sheath cladding is in the composite cable core outside, the outside cladding of inner sheath has supervision layer, oversheath layer in proper order, supervision layer comprises around covering and metal material. The utility model discloses an increase ground connection detection sinle silk in the cable for judge whether earthing device has ground fault, through set up the one deck and keep watch on the layer between the outer sheath of middling pressure cable, receive the external world and smash, when the extrusion leads to the damaged condition of oversheath, keep watch on the layer and can in time report to the police, prevent that the cable from further damaging the electric leakage, avoid the emergence of incident.

Description

Monitoring type medium-voltage rubber jacketed flexible cable with grounding detection line

Technical Field

The utility model relates to a cable trade especially relates to the middling pressure rubber jacketed flexible cable of special equipment use occasions such as mine, opencut coal mine, shield structure.

Background

The grounding of the cable is particularly important in the use process of the cable, especially in the use occasions of special equipment such as mines, opencast mines, shields and the like, the grounding is arranged for preventing the equipment from being electrified due to insulation damage, and if the special equipment is not firmly grounded or a grounding wire is broken, the equipment generates an electric leakage phenomenon, and once a person touches an electrified body, an electric shock accident can occur.

Meanwhile, most of cables used for special equipment such as mines, opencast coal mines and shields are dragging type and moving type cables, the situations of impact, smashing and extrusion occur in the using process, cable sheaths of the cables are damaged in the using process until the electric leakage situation occurs, blasting situations are seriously likely to occur for a medium-voltage system with relatively high rated voltage, and especially in a mine with high-concentration gas, gas explosion is likely to occur, and major safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at solving prior art's is not enough, a keep watch on type middling pressure rubber jacketed flexible cable with ground connection detection line is provided, through having increased the earth protection sinle silk in the cable, be used for judging whether earthing device has ground fault, simultaneously through set up the one deck and keep watch on the layer between the inside and outside sheath of middling pressure cable, receive the external world at the cable and hit pound, when the extrusion leads to the damaged condition of oversheath, it can in time report to the police to keep watch on the layer, prevent that the cable from further damaging the electric leakage, avoid the emergence of incident.

The technical scheme is as follows: a monitoring type medium voltage cabtyre flexible cable with a ground detection line, comprising: composite cable core and cladding are constituteed at the outside outer jacket of composite cable core, composite cable core comprises earth core, power sinle silk, earth connection detection sinle silk, earth core, power sinle silk, earth connection detection sinle silk transposition with one heart forms, and its transposition pitch ratio is 5~14 times, many power sinle silk strands into power cable core, two liang of tangents of adjacent power sinle silk in the power cable core, earth core and earth connection detection sinle silk transposition power cable core are outside, earth core or earth connection detection sinle silk are tangent with two adjacent power sinle silks, the outer jacket comprises inner sheath, supervision layer, oversheath, the inner sheath cladding is in the composite cable core outside, the outside of inner sheath has supervision layer, oversheath layer in proper order, the supervision layer comprises around covering and metal material.

Preferably, the ground wire core, the power wire core and the grounding wire detection wire core in the composite cable core are twisted and molded at one time.

Preferably, the ground core is composed of a ground conductor.

Preferably, the power line core comprises power line conductor, internal shield layer, insulating layer and external shield layer, the outside cladding has internal shield layer, insulating layer, external shield layer in proper order of power line conductor.

Preferably, the ground detection line is composed of a ground detection line conductor and an insulating layer coated outside the ground detection line conductor.

Preferably, the inner sheath is a rubber sheath or a plastic elastomer material, and the strength is greater than or equal to 11 Mpa.

Preferably, the wrapping material in the monitoring layer is one or more of a semi-conductive tape, an aluminum foil or a copper foil.

Preferably, the metal material in the monitoring layer has one of the following structural forms:

a. the steel wire/copper wire composite material is formed by winding a strand consisting of steel wires and copper wires, the winding angle is 20-80 degrees, and the metal coverage rate is more than 60 percent;

b. the copper wire is spirally wound on the inner sheath wrapping layer; the winding angle is 20-80 degrees, and the metal coverage rate is more than 60 percent;

c. copper wires/fiber materials are woven on the inner sheath wrapping layer in a crossed mode, the weaving angle is 20-80 degrees, and the metal coverage rate is larger than 80%;

d. three steel wire/copper wire mixed ropes are uniformly wound outside the inner sheath wrapping layer at an angle of 120 degrees at intervals.

Preferably, the outer sheath is made of a rubber sheath or a plastic elastomer material, and the strength is greater than or equal to 11 Mpa.

Has the advantages that: the utility model discloses a keep watch on type middling pressure rubber jacketed flexible cable with ground connection detection line, through increase the ground connection detection sinle silk in the cable, be used for judging whether earthing device has ground fault, can in time report to the police when the equipment takes place the electric leakage, prevent personnel's electric shock casualties, simultaneously through setting up the one deck and keeping watch on the layer between the inside and outside sheath of middling pressure cable, receive the external world at the cable and dash to pound, when the extrusion leads to the damaged condition of oversheath, it can in time report to the police to keep watch on the layer, prevent that the cable from further damaging the electric leakage, the emergence circumstances of blasting even takes place, avoid the emergence of incident, especially under the mine to high concentration gas, the monitoring to the cable shows especially important.

Drawings

FIG. 1 is a view of the structure of the present invention;

1. a ground wire core; 2. a power wire core; 21. a power line conductor; 22. an inner shield layer; 23. an insulating layer 24, an outer shield layer; 3. the grounding wire detects the wire core; 31. a ground detection line conductor; 4. an inner sheath; 5. a monitoring layer; 6 outer sheath.

Detailed Description

The technical content of the present invention is explained in detail below with reference to specific embodiments:

as shown in fig. 1, a monitoring type medium voltage cabtyre flexible cable with a ground detection line includes: composite cable core and cladding are constituteed at the outside outer jacket of composite cable core, composite cable core comprises 2

earth core

1, 3

power sinle silk

2, 1 earth wire

detection sinle silk

3, 2

earth core

1, 3

power sinle silk

2, 1 earth wire detection sinle silk 3 transposition of concentricity form, and its transposition pitch ratio is 5~14 times, 3 power sinle silk 2 transposition become a power cable core, adjacent power sinle silk 2 two liang are tangent in the power cable core, 2

earth core

1 and 1 earth wire detection sinle silk 3 transposition power cable core are outside, guarantee that every earth core 1 or earth wire detection sinle silk 3 are tangent with two adjacent power sinle silk 2, the outer jacket comprises inner sheath 4, supervision layer 5, oversheath, inner sheath 4 cladding is in the composite cable core outside, the outside of inner sheath 4 cladding has supervision layer 5 in proper order, The outer sheath layer, monitoring layer 5 comprises around covering and metal material.

In the example, the ground wire core 1, the power wire core 2 and the grounding wire detection wire core 3 in the composite cable core are twisted and molded at one time.

In the present example, the ground core 1 consists of a ground conductor.

In this example, the power line core 2 is composed of a power line conductor 21, an inner shielding layer 22, an insulating layer 23 and an outer shielding layer, and the outer part of the power line conductor 21 is sequentially coated with the inner shielding layer 22, the insulating layer 23 and the outer shielding layer.

In this example, the ground detection line is composed of a ground detection line conductor 31 and an insulating layer 23 coated outside the ground detection line conductor 31.

In the present example, the inner sheath 4 is a rubber sheath or a plastic elastomer material with a strength of 11Mpa or more.

In this example, the wrapping material in the monitoring layer 5 is one or more of a semi-conductive tape, an aluminum foil or a copper foil.

In this example, the metal material in the monitoring layer 5 has one of the following structural forms:

b. the copper wire is spirally wound on the wrapping layer of the inner sheath 4; the winding angle is 20-80 degrees, and the metal coverage rate is more than 60 percent;

c. copper wires/fiber materials are woven on the inner sheath 4 wrapping layer in a crossed mode, the weaving angle is 20-80 degrees, and the metal coverage rate is larger than 80 percent;

d. three steel wire/copper wire mixed ropes are uniformly wound outside the lapping layer of the inner sheath 4 at an angle of 120 degrees.

In the present example, the outer sheath is made of rubber sheath or plastic elastomer material, and the strength is greater than or equal to 11 MPa.

Through increase ground connection detection sinle silk in the cable, be used for judging whether earthing device has ground fault, can in time report to the police when equipment takes place the electric leakage, prevent personnel's injures and deaths of electrocuteeing, simultaneously through set up one deck monitoring layer 5 between the inside and outside sheath of medium voltage cable, it pounces to receive the external world at the cable, when the extrusion leads to the damaged condition of oversheath, monitoring layer 5 can in time report to the police, prevent that the cable from further damaging the electric leakage, the emergence circumstances of blasting even, avoid the emergence of incident, especially under the mine to high concentration gas, the monitoring to the cable shows especially important.

The above description is the preferred embodiment of the present invention, and the scope of the right of the present invention should not be limited thereto. It should be noted that, for those skilled in the art, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the scope of the present invention.

Claims

1. A monitoring type medium voltage cabtyre flexible cable with a ground detection line, comprising: compound cable core and cladding constitute its characterized in that at the outside outer jacket of compound cable core: the compound cable core comprises ground core, power sinle silk, earth connection detection sinle silk, ground core, power sinle silk, earth connection detection sinle silk transposition with one heart form, and its transposition pitch diameter ratio is 5~14 times, many the power sinle silk is twisted into the power cable core, adjacent power sinle silk is two liang tangent in the power cable core, ground sinle silk and earth connection detection sinle silk transposition power cable core outside, ground sinle silk or earth connection detection sinle silk are tangent with two adjacent power sinle silks, the oversheath comprises inner sheath, supervision layer, oversheath, the inner sheath cladding is in the compound cable core outside, the outside cladding of inner sheath has in proper order and has supervision layer, oversheath layer, supervision layer comprises around covering and metal material.

2. The monitoring type medium voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: and the ground wire core, the power wire core and the grounding wire detection wire core in the composite cable core are twisted and molded at one time.

3. The monitoring type medium voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the ground wire core is composed of a ground wire conductor.

4. The monitoring type medium voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the power line core comprises power line conductor, internal shield layer, insulating layer and external shield layer, the outside cladding in proper order of power line conductor has internal shield layer, insulating layer, external shield layer.

5. The monitoring type medium voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the grounding detection line is composed of a grounding detection line conductor and an insulating layer coated outside the grounding detection line conductor.

6. The monitoring type medium voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the inner sheath is made of rubber sheath or plastic elastomer material, and the strength is greater than or equal to 11 Mpa.

7. The monitoring type medium voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the wrapping material in the monitoring layer is one or more of a semi-conductive tape, an aluminum foil or a copper foil.

8. The monitoring type medium voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the metal material in the monitoring layer has one of the following structural forms:

9. The monitoring type medium voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the outer sheath is made of a rubber sheath or a plastic elastomer material, and the strength is greater than or equal to 11 Mpa.