CN202502825U - Environment-friendly medium-voltage fireproof cable - Google Patents

Environment-friendly medium-voltage fireproof cable Download PDF

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Publication number
CN202502825U
CN202502825U CN2012201200232U CN201220120023U CN202502825U CN 202502825 U CN202502825 U CN 202502825U CN 2012201200232 U CN2012201200232 U CN 2012201200232U CN 201220120023 U CN201220120023 U CN 201220120023U CN 202502825 U CN202502825 U CN 202502825U
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CN
China
Prior art keywords
layer
cable
fire
conductor
environment
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.)
Expired - Fee Related
Application number
CN2012201200232U
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Chinese (zh)
Inventor
王义林
王勤仙
徐振铎
林爱华
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.)
JIANGSU CHANGFENG CABLE CO Ltd
Original Assignee
JIANGSU CHANGFENG CABLE CO Ltd
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Priority to CN2012201200232U priority Critical patent/CN202502825U/en
Application granted granted Critical
Publication of CN202502825U publication Critical patent/CN202502825U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an environment-friendly medium-voltage fireproof cable, which comprises an aluminum alloy conductor, wherein a conductor shielding layer, an insulation layer and an insulation shielding layer are sequentially extruded on the aluminum alloy conductor in a three-layer co-extruding manner; a metal shielding layer is arranged outside the insulation shielding layer; the aluminum alloy conductor, the conductor shielding layer, the insulation layer, the insulation shielding layer and the metal shielding layer constitute an insulation wire core; and a composite fireproof heat insulating layer, a metal belt interlocked armored fire blocking layer and an outer sheath layer are sequentially arranged outside the insulation wire core. The environment-friendly medium-voltage fireproof cable provided by the utility model has the beneficial effects that: the aluminum alloy conductor cable has excellent performance, can well replace a copper conductor cable, and can be adopted to solve the problems that an electrical pure aluminum conductor is easy to oxidize, has poor creep resistance and the like; and the cable has low material cost and excellent economic performance.

Description

Press fire-resisting cable in a kind of environment-friendly type
Technical field
The utility model relates to the power cable technical field, particularly a kind of fire-resistant midium voltage cable that adopts novel aluminum alloy material and structure.
Background technology
Along with China's rapid development of economy, the voltage of electric power system also raises gradually in the city.At present; The high level of domestic city and super-huge building are also more and more; If these buildings still adopt 0.6/1kV low-voltage distribution, then workload is laid in its matching used cable and installation, the cable laying space will be very huge, and the cable that lays in the building is too much, excessive; Also can influence the operation of circuit, bring bigger safety problem.For solving the actual power difficult problem of high-rise and super-huge building, much brought into use middle pressure (6-35kV) power supply.For building, fire safety is a problem most important, that need pay close attention to and primarily solve.At present; In some big and medium-sized cities, explicitly called for public place building, high-rise, super-huge building need adopt environmental-protection flame-retardant, fire-resisting cable, with prevention when the breaking out of fire; Supply line's normal power supply in preset time can be ensured, and toxic and harmful can be do not produced because of burning.Therefore, need a kind of environment-friendly high fire-retardant fire safe type midium voltage cable of research and development.
Midium voltage cable must have conductor screen, insulation and insulation screen because the voltage that uses is higher outside the conductor of cable; As fire-resisting cable, must must apply a flame retardant coating, to guarantee under combustion case; Not only fire-resistant, and higher thermal insulation will be arranged, injury-free under combustion high temperature to ensure cable insulation; Insulating performance of cable is intact within a certain period of time thereby satisfy, and still can continue power supply.Middle pressure fire-resisting cable known in existing is technological, all exists some problems, and basically all is the midium voltage cable of copper conductor.
Chinese patent " pressure fire-resisting cable in a kind of " (CN2814625; Open day on September 6th, 2006), its structure by crosslinked polyetylene insulated copper strips shielding core, mix the composite fire sheath, alkali-free mineral wool rope packed layer, alkali-free glass wool band, inner sheath, steel-tape armouring layer and the oversheath that constitute by fire-resistant isinglass belt and alkali-free glass wool band and form.
Chinese patent " is pressed fire-resisting cable in a kind of low smoke and zero halogen " (CN20103606; Open day on March 12nd, 2008); Comprise cable core and oversheath; Mainly be to be disposed with from inside to outside between cable core and the oversheath low smoke and zero halogen oxygen barrier thermal insulation layer, asbestos layer, mica tape and metal tape retaining fire bed, be filled with the dustless mineral wool rope of low smoke and zero halogen in the space of cable core.
Above-mentioned two kinds of described fire-resisting cables of patent make the cable bending property poor owing to adopted the wrapped retaining fire bed of metal tape, and cable weight is big; Be unfavorable for construction and transportation; And adopted thicker mica tape and alkali-free glass wool belting layer, and be unfavorable for the heat radiation of cable, influence the ampacity of cable.
Chinese patent " pressure transmission of electricity fire-resisting cable in a kind of " (CN101169993; Open day on April 20th, 2008) comprise in the insulated wire cores of laminated structure; The flame retardant coating and the oversheath in the outside are that mainly flame retardant coating is that the inboard refractory inorganic fiber thermal insulation layer and the outside normally are used for the soft type thermo-setting elastomer, meet to catch fire and then change the composite fire thermal insulation layer of retaining fire screen thermosphere into.
Chinese patent " is pressed fire-resisting cable in three cores " (CN201975130U; Open day on September 14th, 2011); Comprise three cable cores, cable core comprises conductor thread core, the outer insulating barrier of conductor thread core again, and cable core is provided with restrictive coating outward; Be provided with one deck potteryization silastic material layer between cable core and the restrictive coating, potteryization silastic material layer constitutes a refractory protection.
Chinese patent " pressure fire-resisting cable in a kind of " (CN202076045U; Open day on December 14th, 2011); Comprise conductor; Extrude conductor shield, insulating barrier, insulation screen on the conductor successively, insulation screen is provided with metal screen layer, thermal insulation layer, flame retardant coating, oversheath outward successively, and flame retardant coating is the combination flame retardant coating that is made up of the interior flame retardant coating of pottery silicon rubber and the polyolefinic outer flame retardant coating of crust type.
Press fire-resisting cable to adopt the refractory protection of potteryization silicone rubber kinds mostly during above-mentioned three patents are described; It is under the aerobic combustion case; Refractory protection can harden, but its hardening strength is lower, and is not enough to the protectiveness of inner insulated wire cores; And complex manufacturing, difficult to the performance uniformity and the Stability Control of pottery silicone rubber kinds material.
In addition, above-mentioned disclosed all fire-resistant midium voltage cables are the copper conductor cable.The bauxite resource of China is abundant at present, and copper resource scarcity very.Because the internal copper ore resources is basic near exhausted, or cost of winning is too high, 80% copper loss amount dependence on import, in addition now in the world copper valency height become, make the power circuit cost of investment increasingly high, also excessive to the resource consumption of copper material.
The utility model content
The purpose of the utility model is the deficiency that overcomes above-mentioned prior art, provides a kind of cost low, good bandability, fire resistance, anti-flammability height, the fire-resistant aluminium alloy conductor midium voltage cable of energy-conserving and environment-protective when making simultaneously.
The utility model discloses in a kind of environment-friendly type and press fire-resisting cable, comprise aluminium alloy conductor, be extruded with conductor shield, insulating barrier, insulation screen successively with three-layer co-extruded mode on the aluminium alloy conductor; Insulation screen is provided with metal screen layer outward; Above-described aluminium alloy conductor, conductor shield, insulating barrier, insulation screen and metal screen layer constitute insulated wire cores; Insulated wire cores is provided with composite fire thermal insulation layer, the chain armouring retaining of metal tape fire bed, external sheath layer outward successively.
In the utility model, preferably, said conductor is other aluminium alloy conductor that meets 8000 series alloys conductors of ASTM B800-05 standard-required or reach similar performance requirement.
In the utility model, preferably, said metal screen layer is the copper strips lapping layer, or copper wire is dredged around adding copper strips wrapping structure.
In the utility model, preferably, said insulated wire cores is one.
In the utility model, preferably, said insulated wire cores is three, and three insulated lines are twisted into cable core, are provided with packing material on the slit and the surface of cable core.
In the utility model, preferably, described packing material adopts like polypropylene mesh split fibre rope, alkali-free glass fibre rope or dustless mineral wool rope material and constitutes filling.
In the utility model, preferably, described composite fire thermal insulation layer is by the outer inorganic thermal insulation layer of wrapped one deck of cable core, and thermal insulation layer extrudes one deck low smoke halogen-free flame-retardant polyolefin sheath outward, and the outer wrapped one deck inorganic fibre mat of sheath constitutes.
In the utility model, preferably, the chain armouring retaining of said metal tape fire bed is the chain armouring of buckle type in copper strips, copper alloy belt, galvanized steel strip or the stainless steel band.
In the utility model, preferably, said oversheath is that a kind of environmental-protection flame-retardant low-smoke halogen-free polyolefin extrudes restrictive coating.
After adopting technique scheme, the utlity model has following beneficial effect:
(1) the aluminium alloy conductor cable performance is good, and the electrician of Alloy instead of Copper conductor cable, and solution preferably fine aluminium conductor is prone to problems such as oxidation, creep-resistant property difference, and material cost is lower, economic performance is good.
(2) insulated wire cores is one or three.When adopting the cable of three insulated cores, three insulated cores and packing material carry out stranded formation cable core, and cable core is extruded with the compound heat-insulation layer of low smoke halogen-free flame-retardant polyolefin sheath and wrapped inorganic fibre mat formation outward.Inserts adopts polypropylene mesh split fibre rope, alkali-free glass fibre rope or dustless mineral wool rope material, have non-hygroscopic, nontoxic, gentle light and high resilience, characteristic such as pulling force is strong, and is acidproof.
(3) cable conductor has chain armouring retaining fire bed in one deck copper strips, copper alloy belt, galvanized steel strip or the stainless steel band outward; The chain sheathed structure of buckle type closely, firmly in the steel band; The high-temp combustion that can stand 1300 ℃ does not melt; Have very strong impact resistance, bending property is good, can reach 12 times bending radius requirement.
(4) in the chain armouring retaining of cable fire bed, be provided with the compound heat-insulation layer that low smoke halogen-free flame-retardant polyolefin extrudes sheath and wrapped inorganic fibre mat formation; Inorfil band lapping layer is good air permeability when normal the use; When running into high-temp combustion; The fiber mesh seal forms good anti-flaming thermal-insulation layer, can limit or significantly reduce the conduction of outside high temperature sheath and insulation to the inside; Low smoke halogen-free flame-retardant polyolefin sheath in the wrapped fibrage contains more hydroxide; It at high temperature also can decompose and discharges hydrone; Reduce the core internal temperature, the protection internal core is injury-free, has improved fire-resistant, high temperature resistant, the fire-retardant and heat-proof quality of midium voltage cable; Can ensure cable under combustion case, can in longer a period of time, normally use.
(5) outside interior chain armouring retaining fire bed, be extruded with the environmental-protection flame-retardant low-smoke halogen-free polyolefin and extrude restrictive coating, can well protect chain armour, prevent armouring corrosion, water inlet, moisture vapor transmission; When meeting fire burns, fire resistance is good, LSZH; Human body is not had injury, help people's escape.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2.
Embodiment
Below in conjunction with accompanying drawing and instantiation the utility model is done explanation further:
Embodiment 1
As shown in Figure 1; Press fire-resisting cable in the described a kind of environment-friendly type of the utility model; The centre is provided with an aluminium alloy conductor 1; On aluminium alloy conductor 1, be extruded with conductor shield 2, crosslinked polyetylene insulated layer 3, insulation screen 4 successively, the insulation screen 4 outer metal screen layers 5 that are provided with three-layer co-extruded mode; Aluminium alloy conductor 1, conductor screen 2, insulating barrier 3, insulation screen 4 and metal screen layer 5 constitute insulated wire cores; Insulated wire cores is surrounded with the inorganic thermal insulation layer 7 of one deck outward, the thermal insulation layer 7 outer low smoke halogen-free flame-retardant polyolefin sheaths 8 that are extruded with, the sheath 8 outer inorganic fibre mats 9 that are surrounded with; Thermal insulation layer 7, sheath 8 and inorganic fibre mat 9 constitute the composite fire thermal insulation layer; The composite fire thermal insulation layer is provided with chain armouring retaining fire bed 10 in copper strips, copper alloy belt, galvanized steel strip or the stainless steel band outward successively, extrudes resistant environmental low-smoke halogen-free flame polyolefin external sheath layer 11.
Embodiment 2:
As shown in Figure 2, present embodiment and embodiment 1 difference are: insulated wire cores becomes three by one, and three insulated lines are twisted into cable core, is provided with packing material 6 on the slit and the surface of cable core.
Midium voltage cable under the composite fire thermal insulation layer acting in conjunction that chain armouring retaining fire bed 10 and thermal insulation layer 7, sheath 8 and inorganic fibre mat 9 constitute in external sheath layer 11, copper strips, copper alloy belt, galvanized steel strip or stainless steel band; Its fire-resistant and fire resistance can reach category-A fire-resistant with the fire-retardant requirement of A level; Low cigarette, nontoxic during its burning, environmental-protecting performance is good.
The utility model provides the thinking and the method for pressing fire-resisting cable in a kind of environment-friendly type; The method and the approach of concrete this technical scheme of realization are a lot, and the above only is the preferred implementation of the utility model, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection range of the utility model.The all available prior art of each component part not clear and definite in the present embodiment realizes.

Claims (5)

1. press fire-resisting cable in an environment-friendly type; It is characterized in that: the centre is provided with an aluminium alloy conductor (1); Extrude conductor shield (2), insulating barrier (3) and insulation screen (4) on aluminium alloy conductor (1) surface successively with three-layer co-extruded mode, the outer metal screen layer (5) that is provided with of insulation screen (4); Above aluminium alloy conductor (1), conductor shield (2), insulating barrier (3), insulation screen (4) and metal screen layer (5) constitute insulated wire cores; Insulated wire cores is provided with composite fire thermal insulation layer, the chain armouring retaining fire bed (10) of metal tape and external sheath layer (11) outward successively.
2. press fire-resisting cable in the environment-friendly type according to claim 1, it is characterized in that described metal screen layer (5) is that copper strips lapping layer or copper wire are dredged around adding copper strips wrapping structure.
3. press fire-resisting cable in the environment-friendly type according to claim 1 and 2, it is characterized in that said insulated wire cores is one.
4. press fire-resisting cable in the environment-friendly type according to claim 1 and 2, it is characterized in that said insulated wire cores is three, three insulated lines are twisted into cable core, are provided with packing material (6) on the slit and the surface of cable core.
5. according to pressing fire-resisting cable in claim 1 or 2 said kinds of environment-friendly types; It is characterized in that: described composite fire thermal insulation layer is by the outer inorganic thermal insulation layer of wrapped one deck (7) of cable core; The outer one deck low smoke halogen-free flame-retardant polyolefin sheath (8) that extrudes of thermal insulation layer (7), the outer wrapped one deck inorganic fibre mat (9) of sheath (8) constitutes.
CN2012201200232U 2012-03-28 2012-03-28 Environment-friendly medium-voltage fireproof cable Expired - Fee Related CN202502825U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012201200232U CN202502825U (en) 2012-03-28 2012-03-28 Environment-friendly medium-voltage fireproof cable

Publications (1)

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CN202502825U true CN202502825U (en) 2012-10-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102568691A (en) * 2012-03-28 2012-07-11 江苏长峰电缆有限公司 Environment-friendly mid-voltage fire resistant cable
CN103325473A (en) * 2013-05-31 2013-09-25 远东电缆有限公司 Fire-proof low smoke zero halogen medium-pressure hoisting cable for high-rise building and production process thereof
CN110136872A (en) * 2019-05-20 2019-08-16 欧之联电缆有限公司 High flexibility Resisting fractre fireproof cable and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102568691A (en) * 2012-03-28 2012-07-11 江苏长峰电缆有限公司 Environment-friendly mid-voltage fire resistant cable
CN103325473A (en) * 2013-05-31 2013-09-25 远东电缆有限公司 Fire-proof low smoke zero halogen medium-pressure hoisting cable for high-rise building and production process thereof
CN103325473B (en) * 2013-05-31 2017-09-26 远东电缆有限公司 Skyscraper fire resisting low-smoke halogen-free medium voltage crane cable and its production technology
CN110136872A (en) * 2019-05-20 2019-08-16 欧之联电缆有限公司 High flexibility Resisting fractre fireproof cable and preparation method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121024

Termination date: 20160328

CF01 Termination of patent right due to non-payment of annual fee