CN204423940U - A kind of environment-friendly type flexible fire-proof cable - Google Patents
A kind of environment-friendly type flexible fire-proof cable Download PDFInfo
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- CN204423940U CN204423940U CN201520081173.0U CN201520081173U CN204423940U CN 204423940 U CN204423940 U CN 204423940U CN 201520081173 U CN201520081173 U CN 201520081173U CN 204423940 U CN204423940 U CN 204423940U
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Abstract
The utility model is a kind of environment-friendly type flexible fire-proof cable, it is characterized in that: described fire-proof insulation cable is made up of surrounding layer and inner core, inner core is by single-core cable core or multicore cable core is stranded forms, cable core outside is surrounded with two fire lagging, surrounding layer is by thermal insulation layer, oxygen barrier layer, anti-impacting layer and oversheath wrap up successively and forming, described two fire laggings are by interior, the insulating barrier of outer two-layer unlike material is overlapping wrapped to be formed, the overlapping wrapped mineral-insulated fireproof band of nexine, band thickness 0.1-0.2mm, skin extrudes fire proofing material ceramic polyolefin insulation material, thickness is 1.0mm-3.5mm.During burning, two fire lagging can sinter rapidly hard ceramic-like duricrust into, and this duricrust effectively can isolate the infringement of thermal-flame to line-internal, ensures circuit in case of fire unimpeded; Cable is under rated operational voltage, and flame temperature is not less than 750 DEG C, continuous for fuse in fire time 90min.
Description
Technical field
The utility model relates to the technical field of cable, specifically a kind of environment-friendly type flexible fire-proof cable.
Background technology
At present, along with Chinese society rapid development of economy, the place of the important job facilities such as subway, tunnel, power plant, nuclear power station and the densely populated place such as large supermarket, conference and exhibition center gets more and more, requirement is proposed to the security performance under fire condition, require that cable still can maintain a period of time normal power supply under flame conditions, so that escape and rescue.
But due to production technology and the quality requirement of general fireproof cable itself, there is a lot of defect in just simply filling or wrapped fireprotection layer, or can not the cable of production heavy in section and large length, or wrapped insulating barrier comes off and causes the accident.
Summary of the invention
The purpose of this utility model is the environment-friendly type flexible fire-proof cable providing a kind of improvement, it can to overcome in prior art fireproof cable insulating barrier in use or fire condition easily come off, the some shortcomings caused the accident.
To achieve these goals, the technical solution of the utility model is: a kind of environment-friendly type flexible fire-proof cable, it is characterized in that: described fire-proof insulation cable is made up of surrounding layer and inner core, inner core is by single-core cable core or four cable cores are stranded forms, cable core outside is surrounded with two fire lagging, surrounding layer is by thermal insulation layer, oxygen barrier layer, anti-impacting layer and oversheath wrap up successively and forming, described two fire laggings are by interior, the insulating barrier of outer two-layer unlike material is overlapping wrapped to be formed, the overlapping wrapped mineral-insulated fireproof band of nexine, band thickness 0.1-0.2mm, skin extrudes fire proofing material ceramic polyolefin insulation material, thickness is 1.0mm-3.5mm.
During use, the utility model is provided with two fire lagging, under the flame of 650 DEG C-3000 DEG C, hard ceramic-like duricrust can be sintered rapidly into, do not ftracture, not melting, not drip, this duricrust effectively can isolate the infringement of thermal-flame to line-internal, ensures circuit in case of fire unimpeded; Cable is under rated operational voltage, and flame temperature is not less than 750 DEG C, continuous for fuse in fire time 90min.
Cable adopts the chain armouring of self-locking, can bear the lateral pressure of 9000N, large many compared with the anti-side pressure of 3000 ~ 6000N of band-armored.Therefore when high-performance linkage armored cable lays, comparatively band-armored has better stability.Chain armouring ripple type metallic sheath, can improve cable machinery performance, strengthens impact resistance, makes cable have good bending property.
Accompanying drawing is said
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the structural representation of the another embodiment of the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
The label of each accompanying drawing is expressed as follows: the two fire lagging of 1 copper conductor, 2 internal layers, 3 thermal insulation layers, 4 oxygen barrier layers, 5 anti-impacting layers, 6 outer two fire lagging, 7 restrictive coatings, 8 alkali-free glass ropes.
A kind of environment-friendly type flexible fire-proof cable described in the utility model, its difference with the prior art is: described fire-proof insulation cable is made up of surrounding layer and inner core, inner core is by single-core cable core or multicore cable core is stranded forms, cable core outside is surrounded with two fire lagging, surrounding layer is by thermal insulation layer, oxygen barrier layer, anti-impacting layer and oversheath wrap up successively and forming, described two fire laggings are by interior, the insulating barrier of outer two-layer unlike material is overlapping wrapped to be formed, the overlapping wrapped mineral-insulated fireproof band of nexine, band thickness 0.1-0.2mm, skin extrudes fire proofing material ceramic polyolefin insulation material, thickness is 1.0mm-3.5mm.
Single-core cable is made by adopting circle to press copper conductor, the outer wrapped pair of fire lagging of copper conductor and thermal insulation layer, and thermal insulation layer employing alkali-free glass band is wrapped to be formed, insulation thickness 0.4 ~ 0.6mm; Described multicore cable core adopt two cores or the above circle of two cores to press copper conductor is stranded to be formed, core gap filling alkali-free glass rope, simultaneously wrapped pair of fire lagging and thermal insulation layer, thermal insulation layer adopts alkali-free glass band, the wrapped thickness 0.4 ~ 0.6mm of thermal insulation layer.
Described two fire laggings, the wrapped mineral-insulated fireproof band of nexine longitudinal overlap, band thickness 0.14mm, skin laterally extrudes fire proofing material ceramic polyolefin insulation material, and thickness is 1.0mm-1.5mm.The low smoke and zero halogen oxygen barrier material that described oxygen barrier layer adopts material oxygen index to be more than or equal to 45 is made, and described oxygen barrier layer is coated on thermal insulation layer surface, thickness 1.2 ~ 2.2mm.Described anti-impacting layer is chain Sheathed metal anti-impacting layer, adopts 0.5mm-0.75mm nonmagnetic metal band (aluminium strip, aluminum alloy strip or stainless steel band) to make.Common metal armouring adopts wrapped mode, and between band, overlap joint connects, and easily disconnects.Chain armouring is by special chain armored equipment, makes smooth band be pre-formed as S shape, then all linked with one another between band, sealed each other, in sealed process, makes armour form helical ripple, enhances anti-pressure ability.
Described anti-impacting layer, for can also select ripple type metallic sheath anti-impacting layer, adopts the thick aluminum alloy strip of 0.6mm or the thick aluminium strip of 1.0mm to make, adopts argon arc welding water-proof sealing structure.
Ripple type metallic sheath, one is to improve cable machinery performance, strengthens impact resistance, makes cable have good bending property; Two is that argon arc welding makes metallic sheath form sealed environment, makes cable have good water resistance, can intercept flame simultaneously.Oversheath is extruded in the surface of anti-impacting layer, and thickness is 2 ~ 5mm, adopts flame-proof polyethylene or low smoke and zero halogen protective cover material to make.
The utility model has following advantage in concrete use:
1. the fire protecting performance of excellence: insulate under the flame of 650 DEG C-3000 DEG C, hard ceramic-like duricrust can be sintered rapidly into, do not ftracture, not melting, not drip, this duricrust effectively can isolate the infringement of thermal-flame to line-internal, ensures circuit in case of fire unimpeded; Cable is under rated operational voltage, and flame temperature is not less than 750 DEG C, continuous for fuse in fire time 90min.
2. the electric property of excellence: dielectric constant >=25MV/m, specific insulation >=5 × 1013 Ω m; Hard ceramic shell bending strength after ablation can reach 6-8MPa, dielectric constant >=27MV/m, specific insulation >=5 × 1015 Ω m.
3. good thermal insulation, oxygen barrier layer adopts ceramic polyolefine material, after ablation, section can generate uniform ceramic capillary, extraordinary heat insulation, thermal insulation, gear fire effect can be played, conductive coefficient 0.09W/Mk, inside particularly after ablation is cellular uniformly, has better fire resistance and thermal insulation.
4. the mechanical performance of excellence: cable adopts the chain armouring of self-locking, can bear the lateral pressure of 9000N, large many compared with the anti-side pressure of 3000 ~ 6000N of band-armored.Therefore when high-performance linkage armored cable lays, comparatively band-armored has better stability.Chain armouring ripple type metallic sheath, can improve cable machinery performance, strengthens impact resistance, makes cable have good bending property.Anti-impacting layer, for can also select ripple type metallic sheath anti-impacting layer, adopts the thick aluminum alloy strip of 0.6mm or the thick aluminium strip of 1.0mm to make, adopts argon arc welding water-proof sealing structure.Ripple type metallic sheath, one is to improve cable machinery performance, strengthens impact resistance, makes cable have good bending property; Two is that argon arc welding makes metallic sheath form sealed environment, makes cable have good water resistance, can intercept flame simultaneously.
5. economy: structure reasonable in design, selects suitable fire proofing material, has both met the needs of cable fire-proof, considers again Material selec-tion, physical dimension, electric property, reaches the object reduced costs simultaneously.
6. environmentally friendly: heavy metal free, nontoxic, tasteless, human body, environment are not had an impact; Anti-ant, mouse bite preventing, waterproof, oil resistant.
Embodiment 1
Adopt circle to press copper conductor, conductor structure is closely knit, under same cross-sectional area of conductor is long-pending, presses rear conductor diameter and reduces about 10%, thus reduce product external diameter, is convenient to install, lay.
Adopt two fire-proof insulation Rotating fields.The overlapping wrapped mineral-insulated fireproof band in the inside, band thickness 0.14mm.Outside extrudes Novel fireproof material ceramic polyolefin insulation material, and according to different size, thickness is 1.0 mm.Ceramic polyolefin fire-proof insulation material is except having the characteristic of common polyolefin insulation material, also there is excellent fire prevention, fire-resistance property, it can form hard ceramic-like duricrust under the calcination of flame, the not melting under fire hazard environment (650 DEG C-3000 DEG C) of this duricrust, not drip, and there is extraordinary heat insulation fire insulation effect, the unobstructed of electric power and communication under fire condition can be ensured, for personnel escape and fire-fighting and rescue strive for the valuable time.
For single-core cable, seeing once outer wrapped alkali-free glass band, thickness 0.5mm; For multicore cable, after extruded insulation, multicore carries out stranding, core gap filling alkali-free glass rope, simultaneously wrapped alkali-free glass band, wrapped thickness 0.4mm.Glass fiber tape environment-protecting asepsis, have high temperature resistant and fire protecting performance, heat-proof quality is excellent.
Oxygen barrier layer adopts and extrudes mode, is coated on thermal insulation layer, thickness 1.5mm.Oxygen barrier layer adopts ceramic polyolefine material, after ablation, section can generate uniform ceramic capillary, can play extraordinary heat insulation, thermal insulation, gear fire effect, conductive coefficient 0.09W/Mk, inside particularly after ablation is cellular uniformly, has better fire resistance and thermal insulation.Material oxygen index is 45, a large amount of hydrated metal oxide is filled in material, when being heated, hydrone evaporates, and absorbs most of heat, can reduce the temperature of cable, the hydrone formed can water down the concentration of cable ambient oxygen, the Metal oxide product of burning forms duricrust, is coated on outside cable core, stops flame and heat to spread to cable inside.Oxygen barrier layer plays separation sleeve effect simultaneously.Exterior cable adopts the chain armoring material of self-locking.Chain armouring ripple type metallic sheath, can improve cable machinery performance, strengthens impact resistance, makes cable have good bending property.The outermost layer of cable adopts oversheath, and oversheath employing extrudes mode and is extruded on steel-tape armouring layer, thickness 2mm.Select flame-retardant polyethylene sheathing material to make, play a protective role.
Embodiment 2
Described two fire-proof insulation Rotating fields.The overlapping wrapped mineral-insulated fireproof band in the inside, band thickness 0.18mm.Outside extrudes Novel fireproof material ceramic polyolefin insulation material, and according to different size, thickness is 2.0 mm.Ceramic polyolefin fire-proof insulation material is except having the characteristic of common polyolefin insulation material, also there is excellent fire prevention, fire-resistance property, it can form hard ceramic-like duricrust under the calcination of flame, the not melting under fire hazard environment (650 DEG C-3000 DEG C) of this duricrust, not drip, and there is extraordinary heat insulation fire insulation effect, the unobstructed of electric power and communication under fire condition can be ensured, for personnel escape and fire-fighting and rescue strive for the valuable time.In, airtight cavity is provided with between outer two-layer fire lagging, described cavity is made up of multiple airtight areola, above-mentioned areola is spaced apart and interior, between outer fire lagging, interior, each coating one deck calcium carbonate soln on the contact-making surface of outer two-layer fire lagging, then the tack coat of one deck matrix pattern is applied again on calcium carbonate soln surface, when interior, just areola airtight is one by one formed after outer two-layer fire lagging bonding, because above-mentioned airtight areola inwall is coated with calcium carbonate, the meeting carbon dioxide gas when running into high temperature, play the effect stoping fire spreading.The outermost layer of cable adopts oversheath, and oversheath employing extrudes mode and is extruded on steel-tape armouring layer, thickness 4mm.Select low smoke and zero halogen protective cover material to make, play a protective role.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that the utility model is specifically implemented to be confined to these explanations above-mentioned.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.
Claims (6)
1. an environment-friendly type flexible fire-proof cable, it is characterized in that: described fire-proof insulation cable is made up of surrounding layer and inner core, inner core is by single-core cable core or multicore cable core is stranded forms, cable core outside is surrounded with two fire lagging, surrounding layer is by thermal insulation layer, oxygen barrier layer, anti-impacting layer and oversheath wrap up successively and forming, described two fire laggings are by interior, the insulating barrier of outer two-layer unlike material is overlapping wrapped to be formed, the overlapping wrapped mineral-insulated fireproof band of nexine, band thickness 0.1-0.2mm, skin extrudes fire proofing material ceramic polyolefin insulation material, thickness is 1.0mm-3.5mm.
2. a kind of environment-friendly type flexible fire-proof cable according to claim 1, it is characterized in that: single-core cable is made by adopting circle to press copper conductor, the outer wrapped pair of fire lagging of copper conductor and thermal insulation layer, thermal insulation layer employing alkali-free glass band is wrapped to be formed, insulation thickness 0.4 ~ 0.6mm; Described multicore cable core adopt two cores or the above circle of two cores to press copper conductor is stranded to be formed, core gap filling alkali-free glass rope, simultaneously wrapped pair of fire lagging and thermal insulation layer, thermal insulation layer adopts alkali-free glass band, the wrapped thickness 0.4 ~ 0.6mm of thermal insulation layer.
3. a kind of environment-friendly type flexible fire-proof cable according to claim 1 and 2, it is characterized in that: described two fire laggings, the wrapped mineral-insulated fireproof band of nexine longitudinal overlap, band thickness 0.14mm, skin laterally extrudes fire proofing material ceramic polyolefin insulation material, and thickness is 1.0mm-1.5mm.
4. a kind of environment-friendly type flexible fire-proof cable according to claim 1, is characterized in that: described oxygen barrier layer adopts oxygen barrier layer to adopt ceramic polyolefine material to make, and described oxygen barrier layer is coated on thermal insulation layer surface, thickness 1.2 ~ 2.2mm.
5. a kind of environment-friendly type flexible fire-proof cable according to claim 1, is characterized in that: described anti-impacting layer is chain Sheathed metal anti-impacting layer, adopts 0.5mm-0.75mm aluminium strip, aluminum alloy strip or stainless steel band to make; Described anti-impacting layer is ripple type metallic sheath anti-impacting layer, adopts the thick aluminum alloy strip of 0.6mm or the thick aluminium strip of 1.0mm to make.
6. a kind of environment-friendly type flexible fire-proof cable according to claim 1, is characterized in that: oversheath is extruded in the surface of anti-impacting layer, and thickness is 2 ~ 5mm, adopts flame-proof polyethylene or low smoke and zero halogen protective cover material to make.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355283A (en) * | 2015-12-10 | 2016-02-24 | 江苏远方电缆厂有限公司 | Improved flexible fireproof cable |
| CN105390191A (en) * | 2015-12-22 | 2016-03-09 | 上海朗达电缆（集团）有限公司 | Flexible aluminum alloy fireproof cable and manufacture technology thereof |
| CN105551659A (en) * | 2016-02-14 | 2016-05-04 | 上海朗达电缆（集团）有限公司 | Multi-core fireproof control cable and production process |
| CN105825924A (en) * | 2015-12-25 | 2016-08-03 | 浙江万马股份有限公司 | Self-supporting metal protection type fireproof cable, production equipment thereof and production process thereof |
| CN105989914A (en) * | 2015-02-05 | 2016-10-05 | 上海朗达电缆（集团）有限公司 | Environment-friendly type flexible fireproof cable |
| CN106297990A (en) * | 2016-09-29 | 2017-01-04 | 山东华东线缆集团有限公司 | Aluminium alloy conductor flexibility resist bending fireproof cable |
| CN106409398A (en) * | 2015-07-27 | 2017-02-15 | 无锡市群星线缆有限公司 | Flexible fireproof cable |
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2015
- 2015-02-05 CN CN201520081173.0U patent/CN204423940U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105989914A (en) * | 2015-02-05 | 2016-10-05 | 上海朗达电缆（集团）有限公司 | Environment-friendly type flexible fireproof cable |
| CN105989914B (en) * | 2015-02-05 | 2018-10-30 | 上海朗达电缆（集团）有限公司 | A kind of environment-friendly type flexible fire-proof cable |
| CN106409398A (en) * | 2015-07-27 | 2017-02-15 | 无锡市群星线缆有限公司 | Flexible fireproof cable |
| CN105355283A (en) * | 2015-12-10 | 2016-02-24 | 江苏远方电缆厂有限公司 | Improved flexible fireproof cable |
| CN105390191A (en) * | 2015-12-22 | 2016-03-09 | 上海朗达电缆（集团）有限公司 | Flexible aluminum alloy fireproof cable and manufacture technology thereof |
| CN105825924A (en) * | 2015-12-25 | 2016-08-03 | 浙江万马股份有限公司 | Self-supporting metal protection type fireproof cable, production equipment thereof and production process thereof |
| CN105551659A (en) * | 2016-02-14 | 2016-05-04 | 上海朗达电缆（集团）有限公司 | Multi-core fireproof control cable and production process |
| CN106297990A (en) * | 2016-09-29 | 2017-01-04 | 山东华东线缆集团有限公司 | Aluminium alloy conductor flexibility resist bending fireproof cable |
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