CN217822170U

CN217822170U - Fire-resistant anticorrosive underground cable

Info

Publication number: CN217822170U
Application number: CN202221430304.8U
Authority: CN
Inventors: 周孝天; 董远; 陈润格; 汪跃; 陈颖雪
Original assignee: Ameson Fujian Cable Co ltd
Current assignee: Ameson Fujian Cable Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-11-15
Anticipated expiration: 2032-06-09

Abstract

The utility model relates to a fire-resistant and corrosion-resistant underground cable, which comprises a cable body, a protective sleeve and a sensing component, wherein the protective sleeve is sleeved outside the cable body, and the sensing component is positioned between the protective sleeve and the cable body; the cable body sequentially comprises a guide core, an insulating layer, an inner liner, a first water-blocking layer, a metal sheath and a first fire-resistant layer from inside to outside, wherein the first fire-resistant layer is provided with a plurality of chambers which penetrate along the axis direction, limestone is filled in the chambers, and anticorrosive paint is coated outside the first fire-resistant layer; the cable main part is outmost to constitute by the first flame retardant coating that has the cavity, the cavity intussuseption is filled with the lime stone, the response subassembly is located between protective sheath and the cable main part, when the first flame retardant coating of cable main part is corroded damaged, the rivers in the ground take place to react with the lime stone in the cavity of first flame retardant coating and can produce more heat, make the response subassembly sense the temperature variation, thereby send the signal of telecommunication for the control cabinet, maintenance personnel can be timely overhaul, maximum reduction loss.

Description

Fire-resistant anticorrosive underground cable

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to fire-resistant anticorrosive underground cable.

Background

Cables are made of one or more mutually insulated conductors surrounded by an insulating layer and a protective layer for transmitting power or information from one location to another. Underground cables, in contrast to common overhead lines, are often buried underground. Because underground cable is in underground environment, very easily destroyed or corrode, be difficult to carry out the investigation maintenance after damaged moreover, this has been carried out the production of this scheme in view of this.

SUMMERY OF THE UTILITY MODEL

In view of the insufficiency of the prior art, the utility model aims to solve the technical problem of providing a fire-resistant anticorrosive underground cable, can in time send out the police dispatch newspaper when impaired or corroded, the at utmost reduces the loss.

In order to solve the technical problem, the utility model discloses a technical scheme is: a fire-resistant and corrosion-resistant underground cable comprises a cable body, a protective sleeve and a sensing assembly, wherein the protective sleeve is sleeved outside the cable body, and the sensing assembly is positioned between the protective sleeve and the cable body;

the cable body is from inside to outside in proper order for leading core, insulating layer, inner liner, first water blocking layer, metal sheath and first flame retardant coating, first flame retardant coating forms a plurality of cavities that run through along the axis direction, the cavity intussuseption is filled with the lime stone, the outside coating of first flame retardant coating has anticorrosive paint.

The chambers are arranged at annular intervals along the axis of the first refractory layer.

The first fire-resistant layer is made of cross-linked polyethylene insulated polyvinyl chloride.

The sensing assembly is a passive rfid tag, a temperature and humidity sensor is arranged in the passive rfid tag, and the passive rfid tag is in electric signal connection with an rfid card reader.

The bottom of protective sheath inner wall is formed with the storage tank, the response subassembly is placed in the storage tank.

A plurality of annular grooves are formed in the inner wall of the protective sleeve at intervals along the axis direction, and the annular grooves are communicated with the accommodating groove.

Compared with the prior art, the utility model discloses following beneficial effect has:

this implementation is novel in, the cable main part has multilayer structure, its outmost comprises the first flame retardant coating that has the cavity, and the cavity intussuseption is filled with the lime stone, the response subassembly is located between protective sheath and the cable main part, when the first flame retardant coating of cable main part is corroded damaged, the rivers in ground are gone into the cavity of first flame retardant coating and are reacted with the lime stone and can produce more heat, make the response subassembly sense the temperature variation, thereby send the signal of telecommunication for the control cabinet, that dimension guarantor personnel can be timely overhauls, maximum reduction loss.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a cable body in the present invention;

fig. 2 is a schematic view of the three-dimensional structure of the protective cover of the present invention.

The labels in the figure are: 1. a cable body; 11. a guide core; 12. an insulating layer; 13. an inner liner layer; 14. a first water resistant layer; 15. a metal sheath; 16. a first refractory layer; 161. limestone; 2. a protective sleeve; 21. an annular groove; 22. a containing groove.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1-2, the present embodiment provides a fire-resistant and corrosion-resistant underground cable including a cable body 1, a protective sheath 2, and a sensing assembly.

The cable body 1 is established to protective sheath 2 cover, and the response subassembly is located between protective sheath 2 and the cable body 1, and specifically, the response subassembly is passive rfid label, is provided with temperature and humidity sensor in the passive rfid label, passive rfid label and rfid card reader signal connection, and rfid card reader and control end signal connection, when the humiture was too high, passive rfid label can send the signal of telecommunication for rfid card reader, sends the signal of telecommunication by rfid card reader and warns for the control end. The bottom of 2 inner walls of protective sheath is formed with storage tank 22, the response subassembly is placed in storage tank 22, when laying cable body 1 and protective sheath 2, the best storage tank 22 of laying the overall arrangement for protective sheath 2 is located the bottom, 2 inner walls of protective sheath are formed with a plurality of along the axis direction interval and set up annular groove 21, annular groove 21 is linked together with storage tank 22, set up annular groove 21 and be in order when protective sheath 2 ftractures, water infiltrates between protective sheath 2 and the cable body 1, water is along the bottom of 21 runners of annular groove 2 inner walls of protective sheath, make the response subassembly respond to more easily and obtain, induction time is shorter.

The cable body 1 comprises a plurality of guide cores 11, an insulating layer 12, an inner liner 13, a first water-resistant layer 14, a metal sheath 15 and a first fire-resistant layer 16 from inside to outside in sequence, specifically, crosslinked polyolefin is filled between the guide cores 11, and the first water-resistant layer 14 is a non-woven water-resistant tape. The first flame retardant coating 16 is formed with 6 chambers penetrating along the axis direction, specifically, the 6 chambers are annularly arranged along the axis of the first flame retardant coating 16 at intervals, and the first flame retardant coating 16 is made of cross-linked polyethylene insulated polyvinyl chloride; the cavity intussuseption is filled with lime stone 161, the outside coating of first flame retardant coating 16 has anticorrosive paint, set up the cavity and fill lime stone 161 again, be in order to prevent when protective sheath 2 damaged water droplet gets into and the response subassembly does not sense the time, the corruption will be received to cable body 1's first flame retardant coating 16, when first flame retardant coating 16 outermost one deck is damaged, water enters into cavity and lime stone 161 reaction, release more heat in the twinkling of an eye, can make the response subassembly sense and send electric signal of telecommunication go out, the maintainer in time overhauls, reduce the loss.

Having shown and described the fundamental principles and the principal features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. A fire-resistant, corrosion-resistant underground cable, characterized by: the cable comprises a cable body, a protective sleeve and an induction component, wherein the protective sleeve is sleeved outside the cable body, and the induction component is positioned between the protective sleeve and the cable body;

2. A fire-resistant corrosion-resistant underground cable according to claim 1, wherein: the chambers are arranged at annular intervals along the axis of the first refractory layer.

3. A fire-resistant corrosion-resistant underground cable according to claim 1, wherein: the first fire-resistant layer is made of cross-linked polyethylene insulated polyvinyl chloride.

4. A fire and corrosion resistant underground cable according to claim 1 wherein: the sensing assembly is a passive rfid tag, a temperature and humidity sensor is arranged in the passive rfid tag, and the passive rfid tag is in electric signal connection with an rfid card reader.

5. A fire and corrosion resistant underground cable according to claim 4 wherein: the bottom of protective sheath inner wall is formed with the storage tank, the response subassembly is placed in the storage tank.

6. A fire-resistant corrosion-resistant underground cable according to claim 5, wherein: the inner wall of the protective sleeve is provided with a plurality of annular grooves which are arranged at intervals along the axis direction, and the annular grooves are communicated with the accommodating groove.