CN202796163U

CN202796163U - Explosion-proof cable

Info

Publication number: CN202796163U
Application number: CN 201220408916
Authority: CN
Inventors: 裴清春; 甘露; 王鹏; 王艳; 吴刚
Original assignee: Sichuan Jiuzhou Wire and Cable Co Ltd
Current assignee: Sichuan Jiuzhou Wire and Cable Co Ltd
Priority date: 2012-08-17
Filing date: 2012-08-17
Publication date: 2013-03-13
Anticipated expiration: 2022-08-17

Abstract

The utility model relates to an explosion-proof cable. The explosion-proof cable comprises insulating core wires, an inner sheath layer, a steel wire armoring layer, and a flame-retardant outer sheath layer. Spaces are reserved between the inner sheath layer and the insulating core wires. The insulating core wires can move freely inside the inner sheath layer. The steel wire armoring layer is formed by braiding one layer or multiple layers of high-strength steel wires. The braiding density is more than 85%. The cable which has good explosion-proof performances, excellent impact-resistant capabilities and great flame-retardant performances is suitably applied between a coal mine and the outside, among multiple coal mines, between the inner ground and the underground of a coal mine or in harsh conditions where mines are explored, explosive inflammable objects are prevalent or heavy objects fall. The cable is mainly applied in the above-mentioned places for transmitting signals and electric energy.

Description

A kind of anti-explosion cable

Technical field

The utility model relates to field of cables, particularly relates to a kind of anti-explosion cable.Be applicable to colliery and the external world, a plurality of colliery each other, colliery internal ground and down-hole, mining and explosive inflammable, weight badly signal and the delivery of electrical energy between the occasion such as fall arranged.

Background technology

Because the particularity of coal production environment, country adopts the colliery product and forces access system, to guarantee colliery, Mine Safety in Production, strengthened simultaneously safety supervision and information interchange to the inflammable and explosive manufacturing enterprise in colliery and mine, cause colliery and extraneous, colliery each other, signal and the transinformation of colliery internal ground and down-hole increase day by day.

In the prior art, anti-explosion cable is generally by one group of insulation core wire (each insulation core wire consists of by conductor and the insulating barrier that is coated on the conductor), sheath, steel wire or steel-tape armouring layer, the structures such as external sheath layer form: because anti-explosion cable is in coal mining, its production process is underground job, the natural conditions more complicated, the main feature of exploitation is to have gas, coal dust, roof collapse, the pendant tank, the disasters such as fire, very strict to the construction of cable and the explosion-proof performance requirement such as fire-retardant, because what the material structure of anti-explosion cable formed at present is not too reasonable, make the explosion-proof performance of cable relatively poor, it is low that cable bears the foreign impacts ability, need can not be applicable to the communication of explosion-proof fire-retardant occasion, for example: present anti-explosion cable, because armour is wrapped steel band or restraints around steel wire, the ability of cable bearing tension is very low, cable inner restrictive coating hard-pressed bale is on the cable insulation conductor in addition, be subject at cable in the situation of extraneous powerful impulsive force, the pressure of cable is directly delivered on the insulated electric conductor, cause insulated electric conductor to be broken or pull, thereby can cause signal interruption, the accidents such as electric energy can't transmit cause the danger that has an accident.

The utility model content

The purpose of this utility model is intended to overcome above-mentioned deficiency of the prior art, by optimizing the construction of cable, provides a kind of have good mechanical properties, explosion-proof fire-retardant anti-explosion cable.Can be under the complex environment of doing the colliery operation or private cable as electric energy transmitting or the signal of telecommunication arranged under the occasion that blast, high-strength mechanical impact.

The purpose of this utility model realizes by following technical proposal: a kind of anti-explosion cable, comprise setting gradually from inside to outside and be insulation core wire, inner restrictive coating, wire armoring layer, fire-retardant external sheath layer, leave the space between described inner restrictive coating and the insulation core wire, insulation core wire can move freely in sheath.

In technique scheme, described insulation core wire comprises anneal copper conductor and the insulating barrier that is coated on the anneal copper conductor.

In technique scheme, described wire armoring layer adopts one or more layers high-tensile steel wires braiding, and count is more than 85%.

Can find out from architectural feature of the present utility model, its advantage is: adopt the construction of cable of optimizing, insulated wire cores can move freely in inner sheath, wire armoring braid count is more than 85%, can effectively prevent cable run into as blast, cause when weight falls powerful impulsive force the time damage insulation core wire, guarantee effective transmission of signal or electric energy, cable has good fire resistance, applicable to the work on Various Complex adverse circumstances such as the ore deposit, under the mine.

Description of drawings

The utility model will illustrate by embodiment and with reference to the mode of accompanying drawing, wherein:

Fig. 1 is the utility model structural representation;

Fig. 2 is the sectional structure schematic diagram of Fig. 1;

Wherein Reference numeral 1 is that anneal copper conductor 2 is that insulating barrier 3 is inner restrictive coatings

The 4th, braided steel wire armour 5 is fire-retardant external sheath layers.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

Such as Fig. 1 or shown in Figure 2, a kind of anti-explosion cable, comprise insulation core wire, inner restrictive coating, wire armoring layer, fire-retardant external sheath layer, described fire-retardant external sheath layer covers on the wire armoring layer, described wire armoring layer is woven on the inner restrictive coating, described inner restrictive coating is enclosed within outside the insulation core wire, leaves the space between described inner restrictive coating and the insulation core wire, and insulation core wire can move freely in sheath.

Above-mentioned wire armoring layer can adopt one or more layers high-tensile steel wires braiding as required; this braid count is more than 85%; the braid tensile strength of wire is more than 1800MPa; can bear cable runs into such as blast, the powerful impulsive force that causes when weight falls; greatly alleviate impulsive force and pass the braided steel wire armour; effectively avoid impulsive force on the protection insulated wire cores vertical, horizontal, guarantee the normal operation of cable.

Above-mentioned cable inner restrictive coating adopts pine to be enclosed within the outer mode of one group of insulated wire cores, leave certain space between inner restrictive coating and the insulated wire cores, insulated wire cores can be moved freely in inner restrictive coating, prevent from destroying insulated wire cores because cable produces deformation when running into powerful impulsive force.

Above-mentioned insulated wire cores comprises anneal copper conductor and the insulating barrier that is coated on the anneal copper conductor, and wherein insulating barrier can adopt the insulated with material materials such as polythene material, polyvinyl chloride, fluoroplastics, rubber, and the quantity of one group of insulation core wire is 2～32.

Above-mentioned external sheath layer can adopt the materials such as fire retardant polyolefin, flame-proof polyvinyl chloride, flame retardant rubber, can be effectively burns out insulated wire cores having to stop under the environment of naked light.

The utility model adopts the construction of cable of optimizing, can be widely used as between colliery and the external world, colliery and the colliery, colliery internal ground and down-hole, mining and explosive inflammable, have between the abominable occasions such as weight falls, signal and delivery of electrical energy, as private cable, practical.

Disclosed all features in this specification except mutually exclusive feature, all can make up by any way.

Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.

The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims

1. anti-explosion cable, comprise setting gradually from inside to outside and be insulation core wire, inner restrictive coating (3), wire armoring layer (4), fire-retardant external sheath layer (5), it is characterized in that: leave the space between described inner restrictive coating (3) and the insulation core wire, insulation core wire can move freely in sheath (3).

2. a kind of anti-explosion cable according to claim 1 is characterized in that described insulation core wire comprises anneal copper conductor (1) and is coated on insulating barrier (2) on the anneal copper conductor (1).

3. a kind of anti-explosion cable according to claim 1 is characterized in that described wire armoring layer (4) adopts one or more layers high-tensile steel wires braiding, and count is more than 85%.