CN104299710A - Flexible fireproof cable - Google Patents

Flexible fireproof cable Download PDF

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Publication number
CN104299710A
CN104299710A CN201410543735.9A CN201410543735A CN104299710A CN 104299710 A CN104299710 A CN 104299710A CN 201410543735 A CN201410543735 A CN 201410543735A CN 104299710 A CN104299710 A CN 104299710A
Authority
CN
China
Prior art keywords
thermal insulation
cable
copper
sheath
protection band
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410543735.9A
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Chinese (zh)
Inventor
魏永乾
邱树魁
杨学民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LANZHOU ZHONGBANG GROUP CO Ltd
Original Assignee
LANZHOU ZHONGBANG GROUP CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LANZHOU ZHONGBANG GROUP CO Ltd filed Critical LANZHOU ZHONGBANG GROUP CO Ltd
Priority to CN201410543735.9A priority Critical patent/CN104299710A/en
Publication of CN104299710A publication Critical patent/CN104299710A/en
Pending legal-status Critical Current

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Abstract

The invention provides a flexible fireproof cable. The flexible fireproof cable comprises copper conductors, wrapping insulators, filler, a thermal insulation protecting strap and an embossed copper sheath, the number of the copper conductors is four, each copper conductor is wrapped in the corresponding wrapping insulator, the four wrapping insulators in which the copper conductors are wrapped are twisted and wound into a whole to form a cable core, the thermal insulation protecting strap is wound around the twisted and wound wrapping insulators, then, the thermal insulation protecting strap is wrapped in the embossed copper sheath, a gap is formed between the thermal insulation protecting strap and the four wrapping insulators, and the gap is filled with the filler. The flexible fireproof cable overcomes the defects that a mineral insulated cable is poor in bending property, prone to moisture absorption, large in the number of joints, not convenient to install and construct and the like and is novel in structure, good in process technology performance, high in fireproof performance, waterproof performance and corrosion resistance, convenient to install and lay and high in safety performance.

Description

A kind of flexible fire-proof cable
Technical field
The present invention relates to a kind of flexible fire-proof cable, be high temperature resistant, the corrosion resistant extraordinary flexible fire-proof cable of one, be applicable to, in the electric power system of high level, high-rise building, belong to electric wire field.
Background technology
BTTZ cable conductor adopts the 1st class solid copper conductor structure, and copper sheath layer adopts drawing copper tubes technology, limit the continuous seepage length of cable, and cross-sectional area of conductor is little, and (4 × 25 is the longest 90 meters; 1 × 400 maximum length 32 meters), this factor brings greatly inconvenience to the mounting and installation of cable, more nonfireproof transition joint just must be increased in cable line, joint process brings great potential safety hazard, thus greatly reduce the efficiency of transmission of electricity, add the potential faults point of transmission of electricity.
Cable bend is difficult, allows bending radius large.BTTZ type cable is because of the feature of structure, logical root cable presents " rigidity ", ten sides are hard, are difficult to bend, and bending radius requires large, if cable rice number is shorter, cannot lopping in production process, bring greatly inconvenience to packaging and transport, can not whole dish unwrapping wire in mounting and installation process, need to drop into a large amount of manpowers, and cable is easily tied a knot in unwrapping wire process; Further, in mounting and installation, cable is easy to sustain damage because of external force, therefore, must add serpentine or " Ω " shape, to alleviate suffered external force, substantially increase installation cost every a segment distance.
The insulating material magnesium oxide very easily moisture absorption of BTTZ mineral insulated cable, wants baking limit, limit to construct when making transition joint, terminal, once the moisture absorption, will reduce insulation resistance, cause the increase of leakage current, and then cause the increasing of the loss of voltage; And magnesia powder is after copper sheath layer sustains damage, and there will be and comes off, cause cable to be scrapped, cable is short for useful life, and above a few point defect seriously constrains the popularization of this series products.
Summary of the invention
The invention provides a kind of flexible fire-proof cable, overcome mineral insulated cable bending property poor, the defects such as the easy moisture absorption, joint are many, installation is inconvenient, for a kind of novel structure, process technology performance are good, fire prevention, waterproof, decay resistance is strong, mounting and installation is convenient, fail safe is high fireproof cable.
For solving above technical problem, the invention provides following technical scheme: a kind of flexible fire-proof cable, described cable comprises copper conductor, lapped insulation body, filler, thermal insulation protection band, embossing copper sheath, described copper conductor has four, every root copper conductor holds by lapped insulation body, four lapped insulation bodies being enclosed with copper conductor are twisted in being integrally formed core, lapped insulation body after twisted is wound around by thermal insulation protection band, thermal insulation protection band is wrapped up again by embossing copper sheath, between thermal insulation protection band and four lapped insulation bodies, there is space, filler is filled with in this space.Described thermal insulation protection band material is that ceramic fireproof is composited, and is specifically rolled by ceramic fireproof silicon rubber and temperature resistant glass fiber cloth and is composited.
At stranding lapping layer Yu between Zha Pattern copper sheath layer; increase heat-barrier coating; when naked light burning met by cable; along with temperature raises; rapidly by complete housing that Low fire ceramic shape is hard; the ablation time is longer, temperature is higher, housing is harder, and the stiff shell armouring after burning plays a very good protection to circuit, ensures circuit in case of fire unimpeded.
Further, the skin of described embossing copper sheath is provided with as non metallic sheath.
Further, described lapped insulation body adopts fluorophlogopite belt, and width is 20mm, thickness 0.167mm.
Further, described cable controls between 95 DEG C-100 DEG C curing temperature in operation, duration 5h.
This flexible fire-proof cable that the present invention relates to, for a kind of novel structure, process technology performance are good, fire prevention, waterproof, decay resistance is strong, mounting and installation is convenient, fail safe is high fireproof cable, have that mineral insulated cable is high temperature resistant concurrently, fire prevention, LSZH, the excellent specific property such as ageing-resistant, also overcome mineral insulated cable bending property poor, the easy moisture absorption simultaneously; The shortcomings such as joint is many, installation is inconvenient are the renewal products of traditional mineral insulated cable.
Accompanying drawing explanation
Fig. 1 is a kind of flexible fire-proof cable sectional view of the present invention;
1-copper conductor; 2-lapped insulation body; 3-filler; 4-thermal insulation protection band; 5-embossing copper sheath; 6-non metallic sheath.
Embodiment
As shown in Figure 1; a kind of flexible fire-proof cable; described cable comprises copper conductor 1, lapped insulation body 2, filler 3, thermal insulation protection band 4, embossing copper sheath 5; described copper conductor 1 has four; every root copper conductor holds by lapped insulation body 2; four lapped insulation bodies 2 being enclosed with copper conductor 1 are twisted in being integrally formed core; lapped insulation body 2 after twisted is wound around by thermal insulation protection band 4; thermal insulation protection band is wrapped up again by embossing copper sheath 5; between thermal insulation protection band 4 and four lapped insulation bodies 2, there is space, in this space, be filled with filler 3.
Its process program is as follows:
(1) copper conductor 1 adopts the 2nd class stranded conductor meeting GB/T 3956-2008 and require.
(2) lapped insulation body 2 adopts synthesis fluorophlogopite belt, by adjusting the ratio of fluorinated volume in fluorophologopite band, make temperature resistant grade can reach 1300 DEG C, employing width is that 20mm, thickness 0.167mm fluorophlogopite belt eclipsed form are wrapped, wrappedly put up 4.6mm, wrapped through multiple-layer overlapped, make insulated wire cores excellent fire retarding performance.
(3) cure operation: temperature controls 95 DEG C-100 DEG C, duration 5h, effectively avoid fluorophologopite band make moist in atmosphere and have influence on insulation resistance.
(4) thermal insulation protection band 4: adopt ceramic fireproof composite band, rolled by ceramic fireproof silicon rubber and temperature resistant glass fiber cloth and be composited, double-layer overlapping lapping structure, Duplication controls at 20%-30%;
Embossing copper sheath 5: adopt welding copper strips, copper sheath embossing mode.
Core is after oven dry, mica layer comparatively " crisp ", at cabling procedure, rub with in mould contact surface, mica material easily comes off, and core insulating barrier local is thinning, affect the insulation property between core and embossing copper sheath layer, adopt ceramic fireproof composite band, double-layer overlapping is wrapped, Duplication control range 40%-50%.Prevent mica material from coming off on the one hand; on the other hand when naked light burning met by cable; along with temperature raises; rapidly by complete housing that Low fire ceramic shape is hard; the ablation time is longer, temperature is higher, housing is harder; stiff shell armouring after burning plays a very good protection to circuit, ensures circuit in case of fire unimpeded.
(5) embossing copper sheath 5 adopts copper strips argon arc welding embossing mode, by the appropriate design to embossing pitch and embossing crest, makes oversheath have more bendability and crushing resistance; Be simultaneously used in line metal defect detection instrument and detect weld quality, ensure welding quality and embossing outward appearance.
Product result of use is as follows:
Type approval test detection and the display of fire resistance period examining report, product properties meets JG/T 313-2011 standard-required.
The report of its specialized experimental examination is taken passages as follows:
The fire-resistant project of type-test report is taken passages as follows:
Fire resistance test (flame temperature is 950 DEG C ~ 1000 DEG C, for fire time 90min)
From above fire-resistant test item display, this flexible fire-proof cable meets JG/T 313-2011 " rated voltage 750V and following metal sheath inorganic mineral insulation cable and terminal " and the BS 6387:1994 performance requirement of the cable of holding circuit integrality " under the Fire Conditions " standard respectively on fire-resistance property.Illustrate that the design of this novel process and selecting of material are rational, the properties requirement of fireproof cable can be met completely,
By the checking to every testing inspection, this flexible fire-proof cable properties is excellent, and mounting and installation is convenient; At all right wrapped non metallic sheath 6 of wrinkle copper sheath layer, such as plastic sheath.
Embodiment of the present invention does not form the restriction to the application's scope; within every spirit in the present invention's design and principle, any amendment that one of skill in the art can make, equivalent to replace and improvement etc. all should be included within protection scope of the present invention.

Claims (5)

1. a flexible fire-proof cable; it is characterized in that; described cable comprises copper conductor, lapped insulation body, filler, thermal insulation protection band, embossing copper sheath; described copper conductor has four; every root copper conductor holds by lapped insulation body; four lapped insulation bodies being enclosed with copper conductor are twisted in being integrally formed core; lapped insulation body after twisted is wound around by thermal insulation protection band; thermal insulation protection band is wrapped up again by embossing copper sheath; between thermal insulation protection band and four lapped insulation bodies, there is space, in this space, be filled with filler.
2. a kind of flexible fire-proof cable according to claim 1, is characterized in that, the skin of described embossing copper sheath is provided with as non metallic sheath.
3. a kind of flexible fire-proof cable according to claim 1, is characterized in that, described lapped insulation body adopts fluorophlogopite belt, and width is 20mm, thickness 0.167mm.
4. a kind of flexible fire-proof cable according to claim 1, is characterized in that, described cable controls between 95 DEG C-100 DEG C curing temperature in operation, duration 5h.
5. a kind of flexible fire-proof cable according to claim 1, is characterized in that, described thermal insulation protection band material is that ceramic fireproof is composited, and is specifically rolled by ceramic fireproof silicon rubber and temperature resistant glass fiber cloth and is composited.
CN201410543735.9A 2014-10-15 2014-10-15 Flexible fireproof cable Pending CN104299710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410543735.9A CN104299710A (en) 2014-10-15 2014-10-15 Flexible fireproof cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410543735.9A CN104299710A (en) 2014-10-15 2014-10-15 Flexible fireproof cable

Publications (1)

Publication Number Publication Date
CN104299710A true CN104299710A (en) 2015-01-21

Family

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Family Applications (1)

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CN201410543735.9A Pending CN104299710A (en) 2014-10-15 2014-10-15 Flexible fireproof cable

Country Status (1)

Country Link
CN (1) CN104299710A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104681177A (en) * 2015-01-27 2015-06-03 浙江万马股份有限公司 Novel fireproof cable and novel flexible multi-core fireproof pre-branch cable
CN108020891A (en) * 2016-10-31 2018-05-11 西安北方光通信有限责任公司 A kind of metal band type optical cable production. art of falling probationer nurse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1347464A1 (en) * 2002-03-22 2003-09-24 Nexans Insulating composition for an electric safety power cable
CN201247632Y (en) * 2008-06-11 2009-05-27 江苏亨通电力电缆有限公司 Flame-proof, shielding anti-interference flexible cable for communication power supply
CN202601262U (en) * 2012-05-08 2012-12-12 冀东普天线缆有限公司 Flame-retardant fire-resistant control cable
CN202694917U (en) * 2012-07-20 2013-01-23 浙江万马电缆股份有限公司 Novel multi-core fireproof cable with jacket
CN204117663U (en) * 2014-10-15 2015-01-21 兰州众邦电线电缆集团有限公司 A kind of flexible fire-proof cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1347464A1 (en) * 2002-03-22 2003-09-24 Nexans Insulating composition for an electric safety power cable
CN201247632Y (en) * 2008-06-11 2009-05-27 江苏亨通电力电缆有限公司 Flame-proof, shielding anti-interference flexible cable for communication power supply
CN202601262U (en) * 2012-05-08 2012-12-12 冀东普天线缆有限公司 Flame-retardant fire-resistant control cable
CN202694917U (en) * 2012-07-20 2013-01-23 浙江万马电缆股份有限公司 Novel multi-core fireproof cable with jacket
CN204117663U (en) * 2014-10-15 2015-01-21 兰州众邦电线电缆集团有限公司 A kind of flexible fire-proof cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104681177A (en) * 2015-01-27 2015-06-03 浙江万马股份有限公司 Novel fireproof cable and novel flexible multi-core fireproof pre-branch cable
CN108020891A (en) * 2016-10-31 2018-05-11 西安北方光通信有限责任公司 A kind of metal band type optical cable production. art of falling probationer nurse

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Application publication date: 20150121

RJ01 Rejection of invention patent application after publication