CN201707954U

CN201707954U - Fireproof control cable

Info

Publication number: CN201707954U
Application number: CN2010202249270U
Authority: CN
Inventors: 徐春斌; 刘磊; 张志清
Original assignee: Shanghai Gaoqiao Cable Factory Co Ltd
Current assignee: Anhui cable fire protection Polytron Technologies Inc
Priority date: 2010-06-11
Filing date: 2010-06-11
Publication date: 2011-01-12
Anticipated expiration: 2020-06-11

Abstract

The utility model relates to a fireproof control cable, which comprises 2 to 61 wire cores. An insulation layer is wrapped outside each wire core, the 2 to 61 wire cores are stranded to form an outer layer of the cable, the outer layer is a metal tube shielding layer, an outer layer of the metal tube shielding layer is an oxygen barrier, an outer layer of the oxygen barrier is a fireproof anti-impact layer, and an outer layer of the fireproof anti-impact layer is an outer protective layer. The fireproof control cable has the advantages that the fireproof control cable passes C, W, Z level tests of BS6387, is high in voltage level, fine in shielding performance, fine in fire resistance, large in current-carrying capacity, high in short circuit permission current and the like, and can meet requirements of control systems of high-temperature equipment and fireproof occasions.

Description

The fire prevention control cable

Technical field

The utility model relates to a kind of control cable and manufacture method thereof, especially relates to a kind of fire prevention control cable.

Background technology

Common fireproof control cable generally adopts polyvinyl chloride or crosslinked polyethylene as insulation in the prior art, and flame retardant coating is generally the phlogopite band, and sheath material is a polyvinyl chloride.This fireproof control cable is owing to its design feature, and refractory temperature is 750～800 ℃, and fire resistance period is 90 minutes, and fire-resistant reliability is not strong yet.Common fireproof control cable does not have the function of anticollision and anti-spray simultaneously.When fire took place, common fireproof control cable can't guarantee that circuit works on, and was difficult to for escaping and rescuing the longer time of striving for.

And copper core copper sheath magnesium oxide insulating cable (mineral insulated cable) because adopt drawing process and with magnesium oxide as cable insulation, cable core can only be accomplished 7 cores at most, even more multicore numerical control system cable processes, its insulating reliability is also very poor.Simultaneously the mineral insulated cable core does not have color identification or digit recognition, need adopt the logical mode in school to discern core during installation, wastes time and energy, and makes mistakes easily and gives and safeguard in the future and bring difficulty.Magnesium oxide is the helpless selection of mineral insulated cable as cable insulation in addition, and the easy moisture absorption of magnesium oxide is installed and used at wet environment and to be taken place through regular meeting that insulation resistance is very low can't to send electric situation.Just because of this, insulation is that the mineral insulated cable electric pressure is 450/750V.The insulation resistance temperature influence of simultaneous oxidation magnesium is very big, and specific insulation is about 10 in the time of 500 ℃ ³Ω cm is about 10 during to 1000 ℃ ¹Ω cm.Thus, the mineral insulation control cable is difficult to guarantee operate as normal under the fire condition.

Summary of the invention

The utility model technical issues that need to address have provided a kind of fire prevention control cable, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: core; At described core outsourcing insulating layer coating; The radical of described core is between 2-61; Skin by the stranded stranding of 2-61 root core is the metal tube screen; Skin at the metal tube screen is an oxygen barrier layer; The skin of oxygen barrier layer is fire-resistant anticollision layer; The skin of fire-resistant anticollision layer is an outer jacket.

Compared with prior art, the beneficial effects of the utility model are: make fireproof control cable have C, W by BS6387, the test of Z level, electric pressure height, advantages of good shielding performance, good flame resistance, ampacity big, allow characteristics such as short circuit current is big, can satisfy the needs of high-temperature service and fire prevention place control system.

Description of drawings

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

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

As seen from Figure 1: fire prevention control cable of the present utility model comprises: core 1; At described core 1 outsourcing insulating layer coating 2; The radical of described core 1 is between 2-61; Skin by 2-61 root core 1 stranded stranding is a metal tube screen 3; Skin at metal tube screen 3 is an oxygen barrier layer 4; The skin of oxygen barrier layer 4 is fire-resistant anticollision layers 5; The skin of fire-resistant anticollision layer 5 is outer jackets.

Technical characterstic of the present utility model is to be structure, and the material that adopts in every layer can both have been bought in market, as: the material of outer jacket is the conventional low-smoke halogen-free polyolefin of available technology adopting in the utility model; Insulating barrier adopts the material phlogopite band of prior art; And oxygen barrier layer that adopts in the utility model and fire-resistant anticollision layer also can obtain in market.

The method of the above-mentioned fire prevention control cable of manufacturing of the present utility model realizes by following steps:

During the making of core metal is carried out wire drawing, to described wire drawing metal annealing;

Wrapped phlogopite band on core; With the stranded stranding of the core of walking around the phlogopite band; The radical of core is between 2-61;

Outside becoming cable core, extrude seamless metal pipe continuously as screen;

Outside the aluminum metal cover, form oxygen barrier layer;

Adopt wire knitting machine outside oxygen barrier layer, to form wire sets, outside oxygen barrier layer, form fire-resistant anticollision layer by mixing, stir, extrude with wire sets;

Low-smoke halogen-free polyolefin forms outer jacket by extruding outside fire-resistant anticollision layer.

Claims

1. a fire prevention control cable comprises: core; It is characterized in that: at described core outsourcing insulating layer coating; The radical of described core is between 2-61; Skin by the stranded stranding of 2-61 root core is the metal tube screen; Skin at the metal tube screen is an oxygen barrier layer; The skin of oxygen barrier layer is fire-resistant anticollision layer; The skin of fire-resistant anticollision layer is an outer jacket.