CN203165536U

CN203165536U - Fire-resistant rat/ant-prevention cable

Info

Publication number: CN203165536U
Application number: CN 201320225071
Authority: CN
Inventors: 何亮; 徐玉林
Original assignee: ZHEJIANG HAOYUAN INDUSTRIAL Co Ltd
Current assignee: ZHEJIANG HAOYUAN INDUSTRIAL Co Ltd
Priority date: 2013-04-27
Filing date: 2013-04-27
Publication date: 2013-08-28
Anticipated expiration: 2023-04-27

Abstract

The utility model relates to a fire-resistant rat/ant-prevention cable. The fire-resistant rat/ant-prevention cable includes cable inner cores, a cable outer layer wrapped at the exterior of the cable inner cores and fire-resistant glass fiber ropes filled between the cable inner cores and the cable outer layer. Each cable inner core includes a wire core conductor, a conductor shielding layer, an insulating layer, an insulation shielding layer, a metal wire shielding layer and a reverse metal belt bonding layer which are arranged from inside to outside successively; and the cable outer layer includes an oxygen isolating layer wrapped at the exterior of the cable inner cores, a ceramic silicone rubber layer, a metal wire armoring layer, a low-smoke halogen-free flame-retardant belt layer, a flame-retardant inner sheath layer, a first metal belt armoring layer, a second metal belt armoring layer, and a polyvinyl chloride outer sheath. The fire-resistant rat/ant-prevention cable is advantageous in environmental protection, effective avoidance of secondary pollution, excellent shielding and fire-resistant properties, improvement of security and stability in short-circuit process of a power system, solid structure, obvious rat/ant-prevention effect and long service life.

Description

Fire-resistant termite-resistant rodent-resistant cable

Technical field

The utility model relates to a kind of cable, particularly relates to a kind of fire-resistant termite-resistant rodent-resistant cable.

Background technology

In today of electric power, communications industry prosperity, the application of cable is very extensive, at different purposes, a series of cables with certain characteristic occurred.Experience shows, the fail safe of cable and useful life are the most basic and sixty-four dollar questions, Given this, fire-resistant shield and the termite-resistant rodent-resistant performance of cable proposed very high requirement, can guarantee under the situation that short circuit or fire occur, electric power system can the safety and steady transition, prevent secondary pollution, effectively protection against rodents bites again, the erosion of anti-ant moth, slow down agingly, increase the service life.The present cable that occurs mostly is at a certain characteristic wherein and carries out improved cable, is difficult to comprehensively satisfy the demand of and termite-resistant rodent-resistant high request fire-resistant to cable.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of fire-resistant termite-resistant rodent-resistant cable at above-mentioned prior art, and it can effectively stop flame combustion, also can keep the certain hour safe operation, can bite by protection against rodents simultaneously, and anti-ant moth loses.

The utility model solves the problems of the technologies described above the technical scheme that adopts: this fire-resistant termite-resistant rodent-resistant cable, comprise the cable inner core, and be wrapped in the outer cable outer layer of cable inner core, it is characterized in that: described cable inner core comprises: the core conductor, be wrapped in the outer conductor shield of core conductor, be wrapped in the outer insulating barrier of conductor shield, be wrapped in the outer insulation screen of insulating barrier, be wrapped in the outer wire screen of insulation screen, be wrapped in the metal tape that the wire screen is outer, winding direction is opposite with wire screen winding direction and tighten layer; Described cable outer layer comprises: be wrapped in the outer oxygen barrier layer of cable inner core, be wrapped in the outer wrapped ceramic silicon rubber layer of oxygen barrier layer, be wrapped in the outer wire armour of wrapped ceramic silicon rubber layer, be wrapped in the outer low-smoke non-halogen flame-retardant belt of wire armour, be wrapped in the outer fire-retardant inner restrictive coating of low-smoke non-halogen flame-retardant belt, be wrapped in the first metal tape armour layer of fire-retardant inner restrictive coating, be wrapped in the second outer metal tape armour layer of the first metal tape armour layer, be wrapped in the outer polyvinyl chloride oversheath of the second metal tape armour layer; Filled by the refractory glass fiber rope between cable inner core and the cable outer layer.

As improvement, described cable inner core comprises three core power lines, and every core power line structure is identical, is core conductor, conductor shield, insulating barrier, insulation screen, wire screen and metal tape from inside to outside and tightens layer.

As improvement, three core power lines in the described cable inner core are equilateral triangle and distribute, and with the fastening stranding of refractory glass fiber rope of filling.

Compared with prior art, advantage of the present utility model is:

(1), the wire screen is set in the cable inner core and the metal tape that has fastening effect and have shielding action is equally tightened layer, can improve electric power system carries out the transition to short-circuit condition from normal stable state stability;

(2), the cable outer layer setting has the low-smoke non-halogen flame-retardant belt that good flame retardant property is not halogen-containing, the amount of being fuming is low, makes cable environmental protection that the utility model provides and effectively avoid secondary pollution;

(3), cable outer layer arranges the bimetallic strip armour, can strengthen preventing termite moth erosion effect;

Description of drawings

Fig. 1 is the sectional drawing of fire-resistant termite-resistant rodent-resistant cable among the utility model embodiment.

Embodiment

Describe in further detail below in conjunction with the utility model of accompanying drawing embodiment.

Fire-resistant termite-resistant rodent-resistant cable as shown in Figure 1 comprises the cable inner core with three core power lines, and is wrapped in the outer cable outer layer of cable inner core.

Every core power line structure is identical, and being equilateral triangle distributes, concrete structure is: be positioned at inner core conductor 1, be wrapped in the outer conductor shield 2 of core conductor, be wrapped in the outer insulating barrier 3 of conductor shield, be wrapped in the outer insulation screen 4 of insulating barrier, be wrapped in the outer wire screen 5 of insulation screen, be wrapped in the metal tape that the wire screen is outer, winding direction is opposite with wire screen winding direction and tighten layer 6; In the present embodiment, the material of wire screen adopts copper wire, also can adopt other wires; The material that metal tape is tightened layer also adopts copper strips, certainly, equally also can adopt other metal tapes;

Described cable outer layer comprises: be wrapped in the outer oxygen barrier layer 8 of cable inner core, be wrapped in the outer wrapped ceramic silicon rubber layer 9 of oxygen barrier layer, be wrapped in the outer wire armour 10 of wrapped ceramic silicon rubber layer, be wrapped in the outer low-smoke non-halogen flame-retardant belt 11 of wire armour, be wrapped in the outer fire-retardant inner restrictive coating 12 of low-smoke non-halogen flame-retardant belt, be wrapped in the first metal tape armour layer 13 of fire-retardant inner restrictive coating, be wrapped in the second outer metal tape armour layer 14 of the first metal tape armour layer, be wrapped in the outer polyvinyl chloride oversheath 15 of the second metal tape armour layer;

Filled the fastening stranding of refractory glass fiber rope of three core power lines and filling, and then parcel cable outer layer between cable inner core and the cable outer layer by refractory glass fiber rope 7.

Claims

1. fire-resistant termite-resistant rodent-resistant cable, comprise the cable inner core, and be wrapped in the outer cable outer layer of cable inner core, it is characterized in that: described cable inner core comprises: the core conductor, be wrapped in the outer conductor shield of core conductor, be wrapped in the outer insulating barrier of conductor shield, be wrapped in the outer insulation screen of insulating barrier, be wrapped in the outer wire screen of insulation screen, be wrapped in the metal tape that the wire screen is outer, winding direction is opposite with wire screen winding direction and tighten layer; Described cable outer layer comprises: be wrapped in the outer oxygen barrier layer of cable inner core, be wrapped in the outer wrapped ceramic silicon rubber layer of oxygen barrier layer, be wrapped in the outer wire armour of wrapped ceramic silicon rubber layer, be wrapped in the outer low-smoke non-halogen flame-retardant belt of wire armour, be wrapped in the outer fire-retardant inner restrictive coating of low-smoke non-halogen flame-retardant belt, be wrapped in the first metal tape armour layer of fire-retardant inner restrictive coating, be wrapped in the second outer metal tape armour layer of the first metal tape armour layer, be wrapped in the outer polyvinyl chloride oversheath of the second metal tape armour layer; Filled by the refractory glass fiber rope between cable inner core and the cable outer layer.

2. fire-resistant termite-resistant rodent-resistant cable according to claim 1, it is characterized in that: described cable inner core comprises three core power lines, every core power line structure is identical, is core conductor, conductor shield, insulating barrier, insulation screen, wire screen and metal tape from inside to outside and tightens layer.

3. fire-resistant termite-resistant rodent-resistant cable according to claim 2 is characterized in that: three core power lines in the described cable inner core are equilateral triangle and distribute, and with the fastening stranding of refractory glass fiber rope of filling.