CN205542081U

CN205542081U - Insulating fireproof cable

Info

Publication number: CN205542081U
Application number: CN201620402370.2U
Authority: CN
Inventors: 潘明利; 邓茂松
Original assignee: Individual
Current assignee: Ming Cable Technology Co Ltd
Priority date: 2016-05-06
Filing date: 2016-05-06
Publication date: 2016-08-31
Anticipated expiration: 2026-05-06

Abstract

The utility model relates to a cable field particularly, relates to an insulating fireproof cable. It includes an at least cable core, the cable core skin has set gradually coating and oversheath, the cable core with it has the filler to fill between the coating, the inside decompression chamber that still is equipped with of filler, the inside conductor that is provided with of cable core, conductor skin cladding in proper order has insulating layer, metal covering and separation sleeve. The utility model provides an insulating fireproof cable, when decompression chamber can effectively reduce the cable and meets the fire because of the pressure of the foaming inflation production of filler for cable non -deformable, the form is more stable, improves the life of cable.

Description

A kind of insulated cable

Technical field

This utility model relates to field of cables, in particular to a kind of insulated cable.

Background technology

Cable is made up of conductor and the outsourcing insulating protective layer of one or more mutually insulated , it is mainly used to electric power or information are transmitted at one the wire at another.Cable has electricity Power cable, control cable, compensating cable, shielded cable, high-temperature cable, computer cable, Signal cable, coaxial cable, fire-resisting cable, cable for ship, mine cable, aluminium alloy electric Cable etc..They are all made up of sub-thread or stranded conductor and insulating barrier, be used for connect circuit, Electrical equipment etc..

Along with expanding economy, the progress of society, the production of people and life be not increasingly from Open electric power, it may be said that people are just living in an electrical network.Skyscraper is as its of electrical network In an important carrier also get more and more, structural fire protection safety importance have become as society Common recognition.Electric wire is as the circuit of transmission electric energy, and its fire safety is particularly important. Usually, fireproof cable can be divided into rigidity fireproof cable and flexible fire-proof cable.Rigidity is prevented Thermoelectricity cable does not allow overbending, is used for the fixing place laid.Traditional rigidity fire prevention Cable is BTTZ mineral insulated cable (the heavy copper core anti-thermoelectricity of copper sheath magnesium oxide insulated Cable), cable core uses solid conductor, magnesium oxide insulated layer and seamless copper pipe sheath composition.Soft Property fireproof cable as the term suggests its pliability is more preferable, can be used for needing overbending or frequently In the place of movement, normal flexible cable uses copper sheath too, is resistance to outside cable core Fire bed and sheath.

BTTZ mineral insulated cable also referred to as heavy duty mineral insulated cable, overload protection ability By force, intensity is big, wear-resistant.But limited by seamless copper pipe length due to this cable so Being difficulty with heavy in section long rice section to produce, BTTZ mineral insulated cable joint compares simultaneously Many, drawing copper tubes technique makes single continuous length limited, needs constantly during installation Use joint, relatively costly.BTTZ core is rod type solid copper conductor, very rigid, makes Obtain its maximum secting area and can only achieve 400mm².And the copper that typically flexible cable is used protects Equally there is the relatively costly problem caused due to drawing copper tubes in set, and outside cable core Without cushion, when by sharp-pointed external force collision, easily make cable owing to being affected by sheath material Rupture.

Utility model content

The purpose of this utility model is to provide a kind of insulated cable, to solve existing skill Cable poor stability present in art, the problem that cost is high.

To achieve these goals, this utility model is by the following technical solutions:

Embodiment of the present utility model provides a kind of insulated cable, including at least one Root cable core, is disposed with clad and oversheath outside described cable core；

Implant it is filled with, inside described implant between described cable core and described clad It is additionally provided with relief chamber；

Described cable core is internally provided with conductor, and described conductor outer layer is coated with insulation successively Layer, metallic sheath and separation sleeve；

This insulated cable arranges relief chamber inside implant can effectively reduce cable The pressure produced because of the foaming and intumescing of implant when meeting fire so that cable is unlikely to deform, form More stable.

Further, described relief chamber cross section is rounded；The most circular cross section is conducive to Processing, reduces cost；On the other hand the stress of relief chamber is relative the most uniform.

Further, described relief chamber is axially in parallel with described cable core, and described decompression Chamber is evenly distributed in described implant；Due to relief chamber and the axially in parallel side of cable core Face is conducive to the placement of relief chamber, on the other hand can keep the uniformity of cable morphosis； Relief chamber is evenly distributed in implant so that the symmetry of cable is more preferable, in cable Portion is more uniformly stressed；Relief chamber is axially in parallel with cable core, and relief chamber is equably It is distributed in implant and the manufacture process of cable can be made easier, reduce cables manufacturing and become This.

Further, described implant is the mixture of silicon dioxide, mica powder and Waterproof gum； Owing to mica powder and silicon dioxide and Waterproof gum mixing posterior synechiae effect are relative to single mineral The caking property of powder is more preferable, and when cable is impacted by firepower, implant foaming and intumescing solidifies, Form thick barrier and intercepted the firepower direct impact to cable core, undoubtedly the stablizing of cable Property and being improved service life.

Further, described clad is fiber multihole shape；One layer of bag is set outside implant Coating can bring duplicate protection for cable, and therefore fireproofing of cable performance is more preferable；The closeest Real cavernous clad can be that the expansion of implant provides more space, and this is also Reduce cable internal pressure to contribute；The toughness of the clad of fiber multihole shape structure is relatively Height, is thus provided that the pliability that cable is bigger.

Further, described cable core is mutually wound around in rope made of hemp shape around central shaft；Rope made of hemp shape Structure on the one hand ensure that the intensity of cable is higher, the knot between cable core and cable core Close tightr；On the other hand it is difficult to loose due to cable core, also makes the follow-up of cables manufacturing Step is convenient, reduces manufacturing cost further.

Further, described metallic sheath is the aluminum metal pipe being welded；Employing is welded Aluminum metal pipe can overcome the poor efficiency and high cost that the copper pipe of drawing causes, simultaneously Make obtained cable can accomplish that the whole dish of non junction is delivered goods according to the length of customer requirement.

Further, between described clad and described oversheath outer be also sequentially provided with lapping layer, Armor and inductive layer；Lapping layer and armor can improve the stability of cable, intensity and Service life；The cable information sensed can be sent to external mobile device by inductive layer In so that user of service can be known, favorably the most at a distance for the abnormality of cable In processing the unusual condition that cable occurs timely and accurately, improve cable service life.

Further, described armor is steel wire, and described inductive layer is built with temperature sensing Device and humidity sensing device；The intensity of steel wire is relatively big, can preferably fix armor with Interior cable section, cable stability is higher；Temperature sensing device and humidity sensor dress are installed Put at the unusual condition enabled a person to much sooner and targetedly cable is occurred Reason, improves cable service life.

Further, described oversheath outer layer is additionally provided with length mark band；Length mark band energy People is enough made to obtain the length information of cable at a glance so that the laying of cable is installed more Convenient.

The insulated cable that this utility model provides, it has the beneficial effect that

(1) relief chamber is set inside implant, cable can be effectively reduced and meet after fire because filling out Filling the pressure that thing foaming and intumescing produces, therefore so that cable is unlikely to deform, stability is more High；

(2) relief chamber is axially in parallel with cable core, and relief chamber is evenly distributed in filling The manufacture process that can make cable in thing is easier, reduces cables manufacturing cost；

(3) by arranging clad, it is possible to bring duplicate protection for cable, cable can be made Fire protecting performance more preferable；Meanwhile, the fiber multihole shape structure of clad enables to cable Pliability is more preferable；

(4) metallic sheath uses the aluminum metal pipe being welded to be effectively improved cables manufacturing effect Rate, and reduce production cost；

(5) existence of lapping layer and armor can improve the stability of cable, intensity and make Use the life-span；

(6) existence of inductive layer makes the state of cable be easier to behaviour to know, people are permissible Process the unusual condition that cable occurs in time and targetedly accordingly, improve cable and use the longevity Life；

(7) length mark band can make people obtain the length information of cable at a glance, makes The laying of cable is easier for installation.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model detailed description of the invention or skill of the prior art Art scheme, below by detailed description of the invention or description of the prior art required use attached Figure is briefly described, it should be apparent that, the accompanying drawing in describing below is of the present utility model Some embodiments, for those of ordinary skill in the art, are not paying creative labor On the premise of Dong, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is cross sectional representation of the present utility model.

Reference:

1-conductor 2-insulating barrier

3-metallic sheath 4-separation sleeve

5-implant 6-relief chamber

7-clad 8-lapping layer

9-armor 10-inductive layer

11-oversheath 12-length mark band

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearer, below by right The technical solution of the utility model carries out clear, complete description.Obviously, described reality Executing example is only a part of embodiment of this utility model rather than whole embodiments.Based on this Embodiment in utility model, those of ordinary skill in the art are not making creative work All other embodiments obtained by the premise of, broadly fall into the model that this utility model is protected Enclose.

In description of the present utility model, it should be noted that term " " center ", " on ", The orientation of the instruction such as D score, "left", "right", " vertically ", " level ", " interior ", " outward " Or position relationship is based on orientation shown in the drawings or position relationship, it is for only for ease of description This utility model and simplification describe rather than indicate or imply that the device of indication or element are necessary There is specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this The restriction of utility model.Additionally, term " first ", " second ", " the 3rd " are only used for retouching State purpose, and it is not intended that indicate or hint relative importance.

In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clear and definite rule Fixed and limit, term " is installed ", " being connected ", " connection " should be interpreted broadly, such as, It can be fixing connection, it is also possible to be to removably connect, or be integrally connected；It can be machine Tool connects, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to pass through intermediary It is indirectly connected to, can be the connection of two element internals.Ordinary skill people for this area For Yuan, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.

As shown in Figure 1, of the present utility model provide a kind of insulated cable, including At least cable core, is disposed with clad 7 and oversheath 11 outside described cable core；

Implant 5 it is filled with between described cable core and clad 7；

Implant 5 is internal is additionally provided with relief chamber 6；

Described cable core is internally provided with conductor 1, conductor 1 outer layer be coated with successively insulating barrier 2, Metallic sheath 3 and separation sleeve 4；

In traditional cable and be not provided with relief chamber 6, relief chamber 6 is set inside implant 5 Can effectively reduce the pressure produced when fire met by cable because of the foaming and intumescing of implant 5 so that Cable is unlikely to deform, and form is more stable.

In the alternative of the present embodiment, as it is shown in figure 1, further, relief chamber 6 Cross section is rounded.In the present embodiment, the most circular cross section is conducive to processing, reduces Cost；On the other hand the stress of relief chamber is relative the most uniform.

Also, it should be noted relief chamber 6 can also be other shapes, such as square, positive six Limit shape etc.；Relief chamber 6 can have one, it is possibility to have multiple.

In the alternative of the present embodiment, as it is shown in figure 1, further, relief chamber 6 Axially in parallel with described cable core, and relief chamber 6 is evenly distributed in implant 5. In the present embodiment, relief chamber 6 and the axially in parallel one side of cable core are conducive to relief chamber 6 Placement, on the other hand can keep the uniformity of cable morphosis；Meanwhile, relief chamber 6 It is evenly distributed in implant 5 so that the symmetry of cable is more preferable, within cable It is more uniformly stressed；Relief chamber 6 is axially in parallel with cable core, and relief chamber 6 is equably It is distributed in and implant 5 can make the manufacture process of cable easier, reduce cables manufacturing Cost.

Also, it should be noted relief chamber 6 is the cavity of the hollow being made up of aluminium alloy.Fill out Filling thing 5 expanded by heating extruding relief chamber 6, the relief chamber 6 of hollow can be to expand to reserve enough Space, reduces cable internal pressure；Using aluminum alloy material one is owing to aluminum alloy hardness is fitted In, two is owing to aluminium alloy cost is relatively low.

In the alternative of the present embodiment, as it is shown in figure 1, further, implant 5 Mixture for silicon dioxide, mica powder and Waterproof gum.Traditional mineral fireproof cable Implant is typically only with mica powder, and its adhesion effect is slightly worse, causes the easy in bulk of mica powder Come off so that cable fire-proof degradation；In the present embodiment, by mica powder and titanium dioxide Silicon and Waterproof gum mixing posterior synechiae effect are more preferable, when cable is impacted by firepower, and implant 5 Foaming and intumescing solidifies, and forms thick barrier and has intercepted the firepower direct impact to cable core, It is improved stability and the service life of cable undoubtedly.

In the alternative of the present embodiment, as it is shown in figure 1, further, clad 7 In fiber multihole shape.It act as, and first, one layer of clad 7 is set outside implant 5 Can bring duplicate protection for cable, therefore fireproofing of cable performance is more preferable；Second, not Closely knit cavernous clad 7 can be that the expansion of implant 5 provides more space, This also contributes for reduction cable internal pressure；3rd, the bag of fiber multihole shape structure The toughness of coating 7 is higher, is thus provided that the pliability that cable is bigger.

Also, it should be noted clad 7 is asbestos, it is possibility to have polypropylene, glass fibers The material of the fiber multihole structures such as dimension.

In the alternative of the present embodiment, as it is shown in figure 1, further, described cable Core is mutually wound around in rope made of hemp shape around central shaft.In the present embodiment, the structure one of rope made of hemp shape Aspect ensure that the intensity of cable is higher, and the combination between cable core and cable core more steps up Close；On the other hand it is difficult to loose due to cable core, also makes the subsequent step of cables manufacturing more Convenient, reduce manufacturing cost further.

In the alternative of the present embodiment, as it is shown in figure 1, further, metallic sheath 3 For the aluminum metal pipe being welded.The copper pipe joint length of tradition drawing is limited, installs During need to continue on joint, inefficient, and need the electrical resistance at butt joint Special handling can be made, relatively costly；And use the aluminum metal pipe being welded to overcome and draw Poor efficiency that the copper pipe pulled out causes and high cost, make the obtained cable can root simultaneously Accomplish that the whole dish of non junction is delivered goods according to the length of customer requirement.

Metallic sheath 3 can be the most waterproof；Sealing coat 4 is prevented from the pollution of implant 5.

Also, it should be noted conductor 1 is circular copper stranded conductor, circular copper stranded conductor cross-sectional area It is 1.5～6mm²Or 95～630mm².Circular copper stranded conductor is lower than the hardness of solid copper bar, Obtained cable pliability is higher；Simultaneously because the soft of circular copper stranded conductor, it is maximum Sectional area can reach 630mm², and the maximum secting area of the real core copper conductor of tradition is only capable of reaching To 400mm², it is clear that use high sectional area conductor, cable transmission electric power and the ability of signal Higher.

In the alternative of the present embodiment, as it is shown in figure 1, further, clad 7 And between oversheath 11, also it is sequentially provided with lapping layer 8, armor 9 and inductive layer 10.At this In embodiment, lapping layer 8 and armor 9 can improve the stability of cable, intensity and make Use the life-span；The cable information sensed can be sent to external mobile device by inductive layer 10 In so that user of service can be known, favorably the most at a distance for the abnormality of cable In processing the unusual condition that cable occurs timely and accurately, improve cable service life.

Also, it should be noted lapping layer 8 uses synthetic mica tape, oversheath 11 to use low Cigarette Halogen oversheath.The lapping layer and the low smoke and zero halogen oversheath that use synthetic mica tape all can make The feature of environmental protection of cable is more preferable.

In the alternative of the present embodiment, as it is shown in figure 1, further, armor 9 For steel wire, inductive layer is built with temperature sensing device and humidity sensing device.In this enforcement In example, the intensity of steel wire is relatively big, can preferably fix the cable section within armor 9, Cable stability is higher；Traditional cable does not the most all have temperature sensing device and humidity sensor dress Put, to such an extent as to people can not be known in time at the beginning of cable breaks down, and temperature and humidity Properly functioning on cable has again very important impact, therefore installs temperature sensing device The exception enabled a person to much sooner with humidity sensing device and targetedly cable is occurred Situation processes, and improves cable service life.

Also, it should be noted except installing temperature sensing device and humidity sensor in inductive layer Outside device, it is also possible to other sensing devices, such as pressure sensor device, soda acid sensing are installed Device etc..

In the alternative of the present embodiment, as it is shown in figure 1, further, oversheath 11 Outer layer is additionally provided with length mark band 12.In the present embodiment, length mark band 12 can make people Obtain the length information of cable at a glance so that the laying of cable is easier for installation.

Also, it should be noted the cable core of described cable can be 1,3,4 or 5, but be not limited only to these radicals, such as, be 1.5～6mm when the sectional area of conductor 1² Can produce cable 3～61 core, sectional area is 95～240mm²Produced cable 1～ 5 cores, sectional area is 95～240mm²Produced single-core cable.

It is last it is noted that various embodiments above is only in order to illustrate technology of the present utility model Scheme, is not intended to limit；Although this utility model being carried out with reference to foregoing embodiments Detailed description, it will be understood by those within the art that: it still can be to aforementioned Technical scheme described in each embodiment is modified, or to the most some or all of skill Art feature carries out equivalent；And these amendments or replacement, do not make appropriate technical solution Essence depart from this utility model each embodiment technical scheme.

Claims

1. an insulated cable, it is characterised in that include at least cable core, Described cable core outer layer is disposed with clad and oversheath；

It is filled with implant between described cable core and described clad；

It is additionally provided with relief chamber inside described implant；

Described cable core is internally provided with conductor, and described conductor outer layer is coated with insulation successively Layer, metallic sheath and separation sleeve.

Insulated cable the most according to claim 1, it is characterised in that described The circular in cross-section of relief chamber.

Insulated cable the most according to claim 1 and 2, it is characterised in that Described relief chamber is axially in parallel with described cable core, and described relief chamber is evenly distributed in In described implant.

Insulated cable the most according to claim 1, it is characterised in that described Implant is the mixture of silicon dioxide, mica powder and Waterproof gum.

Insulated cable the most according to claim 1, it is characterised in that described Clad is fiber multihole shape.

Insulated cable the most according to claim 1, it is characterised in that described Cable core is mutually wound around in rope made of hemp shape around the central shaft of cable.

Insulated cable the most according to claim 1, it is characterised in that described Metallic sheath is the aluminum metal pipe being welded.

Insulated cable the most according to claim 1 or 5, it is characterised in that Lapping layer, armor and sensing also it is sequentially provided with between described clad and described oversheath Layer.

Insulated cable the most according to claim 8, it is characterised in that described Armor is steel wire；

Described inductive layer is built with temperature sensing device and humidity sensing device.

Insulated cable the most according to claim 1, it is characterised in that described Oversheath outer layer is additionally provided with length mark band.