CN202758633U

CN202758633U - Low-voltage flexible fireproof cable

Info

Publication number: CN202758633U
Application number: CN 201220385725
Authority: CN
Inventors: 倪穗; 石春静; 钱智敏; 陈晓钿
Original assignee: Hangzhou Cable Co Ltd
Current assignee: Hangzhou Cable Co Ltd
Priority date: 2012-08-06
Filing date: 2012-08-06
Publication date: 2013-02-27
Anticipated expiration: 2022-08-06

Abstract

The utility model discloses a low-voltage flexible fireproof cable. The low-voltage flexible fireproof cable is characterized in that the low-voltage flexible fireproof cable comprises an inner core, a flame retardant glass wire filling layer, a ceramic silicone rubber band and a self-locking armored metal sheath. The flame retardant glass wire filling layer wraps the outside of the inner core. The ceramic silicone rubber band and the self-locking armored metal sheath wrap the outside of the flame retardant glass wire filling layer in sequence from inside to outside. The inner core comprises a conductor and a fireproof heat insulation layer, wherein the fireproof heat insulation layer wraps the outside of the conductor. According to the utility model, by adopting the structure, the temperature of the fireproof heat insulation layer is reduced when the cable normally operates; the fireproof temperature level is improved; the cable can normally operate in a period of time, which wins precious time for fire fighting; the possibility of insulation aging of the cable, which is caused by local overheating, is reduced; the bending performance is great; the outer sheath adopts the self-locking armored metal sheath, thus the softness of the cable is effectively improved; and the self-locking armor further has the excellent performances of corrosion resistance, compression resistance, abrasion resistance and the like.

Description

A kind of low pressure flexible fireproof cable

Technical field

The utility model relates to a kind of low pressure flexible fireproof cable.

Background technology

Because the development of skyscraper, underground railway, undergrond street, large-scale power station and important industrial and mining enterprises etc., the low pressure fire-resisting cable also is applied more and more widely.The conventional low cable is owing to adopting the wrapped armouring of steel band to add the designs such as restrictive coating, can't allow cable embody flexible nature, installing, constructing and bring many inconveniences, and adopt conductor directly to coat refractory material, be heated for a long time when running into naked light, can cause refractory material to come off, not only pollute the environment and also can damage the production work personnel health.

The utility model content

The purpose of this utility model is to overcome above shortcomings in the prior art, and provides a kind of reasonable in design, the low pressure flexible fireproof cable that flexibility is good, fire resistance is strong.

The technical scheme in the invention for solving the above technical problem is: this low pressure flexible fireproof cable, it is characterized in that: comprise inner core, fireproof glass silk rope packed layer, ceramic silicon rubber band, self-locking armouring metallic sheath, described fireproof glass silk rope packed layer is wrapped in the outside of inner core, ceramic silicon rubber band, self-locking armouring metallic sheath are wrapped in the outside of fireproof glass silk rope packed layer from inside to outside successively, described inner core comprises conductor, refractory insulating layer, and described refractory insulating layer is wrapped in the conductor outside.Adopt this structure; the temperature of refractory insulating layer when the reduction cable normally moves; when meeting fire or high temperature owing to refractory insulating layer; adopt ceramic silicon rubber band; thereby moisture and the organic compound of its meeting evaporating materials when running into 500 ~ 600 ℃ of high temperature itself form the class ceramic compound, the protection endothecium structure, thus improve the refractory temperature grade; cable can normally be moved, for the quality time is won in fire fighting.Fireproof glass silk rope packed layer, good heat conduction effect can be concentrated the heat because of local overheating along axial conduction, and a minute heat radiation is concentrated, and reduces cable because the possibility of ageing of insulation appears in local overheating.Simultaneously rubber-based compound is contained in the material of ceramic silicon rubber band the inside, the bending property when guaranteeing normal use of cable.Outer protective sleeve adopts self-locking armouring metallic sheath, effectively raises the flexibility of cable, and the self-locking armor also has excellent anticorrosion, resistance to compression, the performance such as wear-resisting.

Refractory insulating layer described in the utility model is comprised of fire-resistant isinglass belt and insulating barrier, and fire-resistant isinglass belt and insulating barrier are wrapped in the outside of conductor from inside to outside successively.

Be provided with altogether four inner cores in the fireproof glass silk rope packed layer described in the utility model.

Self-locking armouring metallic sheath described in the utility model adopts stainless steel.

The utility model compared with prior art, have the following advantages and effect: adopt this structure, the temperature of refractory insulating layer improved the refractory temperature grade when reduction cable normally moved, cable can normally be moved, for the quality time is won in fire fighting.Reduce cable because the possibility of ageing of insulation, good bending property appear in local overheating.Outer protective sleeve adopts self-locking armouring metallic sheath, effectively raises the flexibility of cable, and the self-locking armor also has excellent anticorrosion, resistance to compression, the performance such as wear-resisting.

Description of drawings

Fig. 1 is the cross section structure schematic diagram of the utility model embodiment.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and by embodiment, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.

Referring to Fig. 1, the present embodiment low pressure flexible fireproof cable, comprise inner core, fireproof glass silk rope packed layer 4, ceramic silicon rubber band 5, self-locking armouring metallic sheath 6, described fireproof glass silk rope packed layer 4 is wrapped in the outside of inner core, ceramic silicon rubber band 5, self-locking armouring metallic sheath 6 are wrapped in the outside of fireproof glass silk rope packed layer 4 from inside to outside successively, described inner core comprises conductor 1, refractory insulating layer, and described refractory insulating layer is wrapped in conductor 1 outside.

Refractory insulating layer is comprised of fire-resistant isinglass belt 2 and insulating barrier 3, and fire-resistant isinglass belt 2 and insulating barrier 3 are wrapped in the outside of conductor 1 from inside to outside successively.

Fireproof glass silk rope packed layer 4 is interior in the present embodiment is provided with four inner cores altogether.Refractory insulating layer adopts the wrapped mode in layered coverage gap, makes refractory insulating layer and conductor 1 in conjunction with tightr.

In addition, need to prove, the specific embodiment described in this specification, the shape of its parts and components, institute's title of being named etc. can be different, and the above content described in this specification only is to the explanation of the utility model structure example.Allly conceive equivalence variation or the simple change that described structure, feature and principle are done according to the utility model patent, be included in the protection range of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection range of the present utility model.

Claims

1. low pressure flexible fireproof cable, it is characterized in that: comprise inner core, fireproof glass silk rope packed layer, ceramic silicon rubber band, self-locking armouring metallic sheath, described fireproof glass silk rope packed layer is wrapped in the outside of inner core, ceramic silicon rubber band, self-locking armouring metallic sheath are wrapped in the outside of fireproof glass silk rope packed layer from inside to outside successively, described inner core comprises conductor, refractory insulating layer, and described refractory insulating layer is wrapped in the conductor outside.

2. low pressure flexible fireproof cable according to claim 1, it is characterized in that: described refractory insulating layer is comprised of fire-resistant isinglass belt and insulating barrier, and fire-resistant isinglass belt and insulating barrier are wrapped in the outside of conductor from inside to outside successively.

3. low pressure flexible fireproof cable according to claim 1 is characterized in that: be provided with altogether four inner cores in the described fireproof glass silk rope packed layer.

4. low pressure flexible fireproof cable according to claim 1 is characterized in that: described self-locking armouring metallic sheath employing stainless steel.