CN207282172U

CN207282172U - A kind of fireproof control cable

Info

Publication number: CN207282172U
Application number: CN201721282210.XU
Authority: CN
Inventors: 王浩淼; 王成忠; 刘源
Original assignee: SHANGHAI RONDA CABLE (GROUP) CO Ltd
Current assignee: SHANGHAI RONDA CABLE (GROUP) CO Ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2018-04-27
Anticipated expiration: 2027-09-30

Abstract

The utility model describes a kind of fireproof control cable, and control cable includes core and the fire lagging being wrapped in outside core；The core is formed by some conductor strands, and each conductive surface is equipped with ceramic insulating layer；The fire lagging is followed successively by insulation pack band, aluminum pipe shielded layer, separation layer, fireprotection layer, band and sheath from inside to outside.Since core is divided into multilayer, core is formed by multiple conductor strands, the surface of each conductor is enclosed with one layer of ceramic insulating layer respectively, then fire lagging is wrapped up again outside whole core, the excellent insulating property of whole cable, volume resistivity is up to the Ω cm of volume resistivity >=2 × 1015, breakdown strength >=20kv/mm；There is the high- and low-temperature resistance of brilliance at the same time, 40~200 DEG C of Long-term service temperature, service life was up to 70 years.

Description

A kind of fireproof control cable

Technical field

Field of cable technology, more particularly to a kind of fireproof cable are the utility model is related to, it is specifically a kind of to be equipped with spy The fireproof control cable of insulating layer and shielded layer processed.

Background technology

With Chinese society rapid development of economy, the important job facilities such as heavy construction, subway, tunnel, nuclear power station and The densely populated places such as large supermarket, conference and exhibition center it is local more and more, requirement is proposed to the security performance under fire condition, Cable is asked to remain to maintain a period of time normal power supply under flame conditions, in order to escape and rescue.Control cable is set at these Play an important role in applying, be the passage of various information processings, in case of fire, whether control cable can be in certain time Interior normal operation, plays an important role escape and the disaster relief.Therefore, control fireproofing of cable performance has obtained great attention.

But the control cable of the prior art can not often be competent at this work under extreme conditions, fire or tight is run into Anxious evacuation situation, it is existing control cable can effective run time it is short, can not meet the time requirement escaped, rescued.

The content of the invention

The purpose of this utility model is to provide a kind of fireproof control cable, outside to fireproof cable internal core and its The change of the fire-proof insulation Rotating fields of parcel, it is intended to significantly improve fireproofing of cable performance and insulation performance.

To achieve these goals, the technical solution of the utility model is：A kind of fireproof control cable, it is characterised in that： The control cable includes core and the fire lagging being wrapped in outside core；The core is by some conductor strands Form, each conductive surface is equipped with ceramic insulating layer；The fire lagging is followed successively by insulation pack band, aluminum pipe from inside to outside Shielded layer, separation layer, fireprotection layer, band and sheath.

Preferably, the core is formed by 10-30 conductor strand, and the conductor is divided into three layers and is configured, point Layer, intermediate layer and surrounding layer centered on not, wherein central core are equipped with a conductor, then set intermediate layer around this root conductor, Surrounding layer is set around intermediate layer again.

Preferably, core includes 19 conductors, and central core sets a conductor, intermediate layer by 6 conductors it is uniformly distributed The surrounding of central core conductor, surrounding layer is by 12 uniformly distributed surroundings in intermediate layer of conductor.

Further, the ceramic insulating layer is extruded using ceramic silica cement and formed, and conductor uses copper free wire, ceramics The thickness of insulating layer and the diameter ratio of conductor are 1:2-5, the ceramic insulating layer of each conductor are externally provided with numeral or color Mark, core are coated with insulation pack band, and the insulation pack band is formed by the wrapping of alkali-free glass band.

Further, the aluminum pipe shielded layer uses aluminum pipe of the thickness for 1.0-1.5mm；Separation layer is isolated using PE Set, the thickness of separation layer is 1mm；Sheath uses flame-proof polyethylene or low smoke and zero halogen sheath material, and the thickness of sheath is 2-5mm.

Relative to the prior art, the technical solution of the utility model further includes many except the improvement of overall technical architecture Improvement in terms of details, specifically, has the advantages that：

1st, improvement project described in the utility model, core are divided into multilayer, and core is formed by multiple conductor strands, each led The surface of body is enclosed with one layer of ceramic insulating layer respectively, then wraps up fire lagging outside whole core again, whole cable it is exhausted Edge function admirable, volume resistivity is up to the Ω cm of volume resistivity >=2 × 1015, breakdown strength >=20kv/mm；Have at the same time Remarkable high- and low-temperature resistance, Long-term service temperature -40~200 DEG C, service life was up to 70 years；

2nd, shielded layer is equipped with the technical solution of the utility model, which provides a uniform electricity , which can increase the permission length between motor and driver before voltage multiplication；High-strength insulating material Use so that cable can be born due to huge voltage peak caused by reflection（2-3X）；Aluminium sheath plays a kind of effective screen The effect of covering, so that the crosstalk between reducing adjacent circuit；Aluminium sheath is a kind of low-impedance path, and the high frequency that can be prevented is made an uproar Sound is diffused into the power grid on ground.Shielded layer both plays the role of suppression electromagnetic wave and externally launches, but also as the logical of short circuit current flow Road, can play the protective effect of neutral core；

3rd, the utility model has good thermal insulation, and thermal conductivity factor 0.09W/Mk, the inside being particularly after ablation is equal Even is cellular, has more preferable fire resistance and thermal insulation；

4th, the utility model has excellent fire protecting performance, and fire resistance rating can reach the A level standards of GB12666.6, that is, exist Burn 90min in 950 ~ 1000 DEG C of flames, and 3A fuses do not fuse；Also the C W Z highest levels of Britain BS6387 are can reach, i.e., C --- burn 3H, W --- water spray in 950 DEG C of flame, Z --- vibrations.

Brief description of the drawings

Fig. 1 is the structure diagram of an embodiment described in the utility model.

Reference numeral：

1 conductor, 2 ceramic insulating layers, 3 insulation pack bands, 4 aluminum pipe shielded layers, 5 separation layers, 6 fireprotection layers；

7 bands, 8 sheaths.

Embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality Novel protected scope.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；It can be directly connected, can also be indirectly connected by intermediary, can be the connection inside two elements.For For those of ordinary skill in the art, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.

The utility model provides a kind of fireproof control cable, and with reference in figure 1, its difference with the prior art is：Control Cable processed includes core and the fire lagging being wrapped in outside core；The core is formed by some conductor strands, often A piece conductive surface is equipped with ceramic insulating layer；The fire lagging be followed successively by from inside to outside insulation pack band, aluminum pipe shielded layer, Separation layer, fireprotection layer, band and sheath.

Further, the ceramic insulating layer is extruded using ceramic silica cement and formed, and conductor uses copper free wire, pottery The thickness of porcelain insulating layer and the diameter ratio of conductor are 1:2-5, it is preferred that the thickness of ceramic insulating layer and the diameter ratio of conductor For 1:3.5, the ceramic insulating layer of each conductor is externally provided with numeral or colour code, core are coated with insulation pack Band, the insulation pack band are formed by the wrapping of alkali-free glass band.Ceramic silica cement insulating layer has excellent insulation performance, body The product Ω cm of resistivity >=2 × 1015, breakdown strength >=20kv/mm, gradual ceramic, is inorganic compounding mineral matter after combustion Oxide oxygen barrier packing material, point is not, smokeless, produced without pernicious gas, fire prevention, excellent fire retarding performance, and high temperature resistant is reachable 2000 DEG C, hard ceramic armor housing can bear to spray, shake, and be purely inorganic mineral oxides after burning, insulation, every Thermal effect is notable, can pass through CWZ grades of the A levels and BS6387 highest levels of 950 ~ 1100 DEG C × more than 180min Spray, vibratory test requirement.

In one embodiment, the core is formed by 10-30 conductor strand, and the conductor is divided into three layers of progress Set, be respectively central core, intermediate layer and surrounding layer, wherein central core is equipped with a conductor, is then set around this root conductor Intermediate layer, then surrounding layer is set around intermediate layer.

In a preferred embodiment, core includes 19 conductors, and central core sets a conductor, and intermediate layer is by 6 The uniformly distributed surrounding in central core conductor of conductor, surrounding layer is by 12 uniformly distributed surroundings in intermediate layer of conductor.Conductor material Matter is copper free wire, 1-6mm²Using a kind of conductor or two class conductors, 10mm²Using two class conductors.Core uses Digital ID, Core arranges in the direction of the clock, by internal layer to outer layer since 1, natural numerical order clockwise arrange.Stranding at the same time, Pricked on cable core around alkali-free glass band of double-baging into band plays heat-blocking action.Then aluminum pipe shielded layer is extruded, is connected using aluminum pipe It is continuous to extrude production equipment, one layer of aluminum pipe is coated outside insulated wire cores, aluminum pipe thickness selects 1.0-1.5mm according to cross-sectional sizes, There is choosing, use aluminium of the thickness for 1.2mm, aluminium selects A2 aluminium bars.After insulated wire cores cladding aluminum pipe, first, in can shielding Portion and external electrical field, the interference in magnetic field；Aluminium sheath provides a uniform electric field；Second, can laterally it block water；Third, Aluminum pipe can be used as ground wire to use, and reduce cable cost.Further, aluminum pipe shielded layer provides a uniform electricity , which can increase the permission length between motor and driver before voltage multiplication, in order to further enhance effect Fruit, can paste one layer of orientation silicon steel sheet in aluminum pipe inner wall, improve the magnetic flux of cable；The use of high-strength insulating material, makes Obtaining cable can bear due to huge voltage peak caused by reflection（2-3X）；Aluminium sheath plays a kind of effective shielding action, So as to reduce the crosstalk between adjacent circuit；Aluminium sheath is a kind of low-impedance path, the high frequency noise diffusion that can be prevented To the power grid on ground.Shielded layer both plays the role of suppression electromagnetic wave and externally launches, and but also as the passage of short circuit current flow, can rise To the protective effect of neutral core.

Then PE separation sleeves are extruded, PE separation sleeves thickness is 1mm, when extruding separation sleeve, numeral is carried out to core or is divided Colour code will, color separation can be distinguished with different colours, colour band can also be used to distinguish.

Fireprotection layer is extruded again, and fire prevention layer material uses aluminium hydroxide hydrate（Or magnesium hydroxide hydrate）Pressed with sodium metasilicate The mixture that certain proportion mixes, since mixture contains a large amount of aluminium hydroxide hydrates（Or magnesium hydroxide hydrate）, Decomposed during high temperature and produce large quantity of moisture formation water utilities, so as to play the role of cooling and fireproof.While extruding fireprotection layer, depanning It is overlapping at the same time around high fire-retardance band of double-baging after mouthful, drip and overflow to prevent fire-proof mud.

Oversheath is finally extruded, oversheath use extrudes mode and is extruded on fireprotection layer, 2~5mm of thickness.According to different need Will, flame-proof polyethylene or low smoke and zero halogen sheath material, oversheath can be selected to play a protective role.

Specific embodiment of the utility model is described in detail above, but it is intended only as example, and this practicality is new Type is not restricted to particular embodiments described above.To those skilled in the art, it is any that the utility model is carried out Equivalent modifications and substitute also all among the category of the utility model.Therefore, the spirit and model of the utility model are not being departed from Lower made impartial conversion and modification are enclosed, should all be covered in the scope of the utility model.

Claims

A kind of 1. fireproof control cable, it is characterised in that：The control cable includes core and is wrapped in anti-outside core Fiery insulating layer；

The core is formed by some conductor strands, and each conductive surface is equipped with ceramic insulating layer；

The fire lagging is followed successively by insulation pack band, aluminum pipe shielded layer, separation layer, fireprotection layer, band and shield from inside to outside Set.
A kind of 2. fireproof control cable according to claim 1, it is characterised in that：The core is by 10-30 conductor It is twisted, the conductor is divided into three layers and is configured, and is respectively central core, intermediate layer and surrounding layer, and wherein central core is set There is a conductor, intermediate layer then is set around this root conductor, then surrounding layer is set around intermediate layer.
A kind of 3. fireproof control cable according to claim 2, it is characterised in that：Core includes 19 conductors, central core A piece conductor is set, and intermediate layer is by 6 uniformly distributed surroundings in central core conductor of conductor, and surrounding layer is by 12 uniform cloth of conductor It is located at the surrounding in intermediate layer.
A kind of 4. fireproof control cable according to claim 1, it is characterised in that：The ceramic insulating layer is using ceramics SiClx clay, which extrudes, to be formed, and conductor uses copper free wire, and the thickness of ceramic insulating layer and the diameter ratio of conductor are 1:2-5, often The ceramic insulating layer of a piece conductor is externally provided with numeral or colour code, and core is coated with insulation pack band, it is described every Hot band is formed by the wrapping of alkali-free glass band.
A kind of 5. fireproof control cable according to claim 1, it is characterised in that：The aluminum pipe shielded layer uses thickness For the aluminum pipe of 1.0-1.5mm；Separation layer uses PE separation sleeves, and the thickness of separation layer is 1mm；Sheath using flame-proof polyethylene or Low smoke and zero halogen sheath material, the thickness of sheath is 2-5mm.