CN201607970U - Fireproof and waterproof LSZH fire alarm cable - Google Patents
Fireproof and waterproof LSZH fire alarm cable Download PDFInfo
- Publication number
- CN201607970U CN201607970U CN2010200262463U CN201020026246U CN201607970U CN 201607970 U CN201607970 U CN 201607970U CN 2010200262463 U CN2010200262463 U CN 2010200262463U CN 201020026246 U CN201020026246 U CN 201020026246U CN 201607970 U CN201607970 U CN 201607970U
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- fire alarm
- watertight composition
- alarm cable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model provides a fireproof and waterproof LSZH fire alarm cable which comprises an insulation core arranged in a waterproof layer, wherein a water blocking rope is filled in the gap between the waterproof layer and the insulation core, a protective conductor is arranged in the waterproof layer and is contacted with the waterproof layer, an external protective sleeve is wrapped on the exterior of the waterproof layer, the insulation core comprises a copper conductor, a fireproof layer and an insulation layer, wherein the fireproof layer is wound on the outer side of the copper conductor, and the insulation layer is wrapped on the outer side of the fireproof layer. The fire alarm cable adopting the technical proposal is fireproof and waterproof, has electromagnetic shielding property, is also environmental protection, has safety and reliability, flexible structure, light weight, convenient mounting and avoids special tools.
Description
Technical field:
The utility model relates to technical field of electric wires and cables, refers in particular to a kind of low smoke and zero halogen fire alarm cable of fire-proof and water-proof.
Background technology:
Building fire has become one of serious public hazards that jeopardize people's lives and properties.No matter be important public utility, skyscraper, comprehensively write building, large-scale theatre, conference and exhibition center, computer control room, power plant, airport, subway, hospital, commercial building, hotel, warehouse, school and resident's building etc., all need perfect fire alarm and guard system.According to statistics, in the fire sum, electrical fire accounts for 50%, and because the fire that the electric wire short circuit causes accounts for the 40-50% of electrical fire.When breaking out of fire, adopt the cable line of common polyvinyl chloride insulation and sheath material can make the flame rapid spread, and give out a large amount of dense black smokes and a large amount of poisonous and corrosive gas, both cause disaster-stricken crowd's fear, be difficult to escape, also influence fire-fighting and rescue.Fire incident cause of death investigation is shown, have the dead of 95% to be since toxicity suffocate and threaten due to, the real number less than of being burnt to death by naked light 5%.Under the fire alarm situation, particularly the fire alarm system cable then completely loses the fire alarm function in case burnt or destroyed water inlet causes short circuit, and its consequence is hardly imaginable.
Popular in the market fire alarm cable, mainly contain two kinds of mineral insulated cable and flexible fire-proof cables, wherein, the structural shape of mineral insulated cable is: copper conductor requirement in accordance with regulations is distributed in the seamless copper pipe, fill the insulation of inorganic oxide magnesium powder in the space between copper pipe and conductor, and then through rolling or be drawn into the specification that needs.Not ccontaining doubt, the mechanical strength of this cable is very big, not only prevented fires, but also waterproof, be safest fireproof cable.But, because of its mechanical strength makes cable very hard greatly, being not easy to install, cable splice specification requirement height needs specific purpose tool in addition, and the equipment investment volume is huge, and product cost is very high.For overcoming the defective that the too hard inconvenience of mineral insulated cable is installed, people have developed flexible fire-proof cable by improving.So-called flexible fire-proof cable as its name suggests, is mainly emphasized the flexibility of cable.It is with copper conductor earlier wrapped mica tape and extruded insulation layer, stranded then stranding, the vertical again copper-clad band in outside, and put up the slit welding, if when requiring cable that better bending property is arranged, can be on the smooth copper sheath embossing again.Flexible fire-proof cable adopts mica tape to replace magnesia powder to insulate, and simpler than mineral insulated cable on insulating material and manufacturing process, equipment investment is few, and than mineral insulated cable softness, product cost is also relatively low.But vertical bag soldering copper belt weld seam when cable jacket burns can break, thereby is easy to make water and fire to the cable internal penetration.Even install when laying under normal operation, if bending radius is too little, weld seam also breaks easily, makes moisture immerse cable inside, mica tape is made moist, and cause cable short circuit.Therefore, so-called flexible fire-proof cable is the undesirable and not too reliable construction of cable of water resistance of a kind of fire protecting performance.
In view of above product technology present situation, need a kind of existing good fire performance of design, again the fire alarm cable of reliable water-proof function arranged, make it can satisfy various forms fire alarm and emergency lighting system fireproofing of cable waterproof requirement, again can simplified manufacturing technique and be convenient to install the fire alarm cable that lays.
Summary of the invention:
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of structurally flexible, in light weight, simple installation is provided, need not fire prevention, waterproof, the environmental protection that special tool(s) just can install, the low smoke and zero halogen fire alarm cable with electro-magnetic screen function.
For achieving the above object; technical scheme provided by the utility model is: a kind of low smoke and zero halogen fire alarm cable of fire-proof and water-proof; it includes insulating core; insulating core is positioned at watertight composition; gap location between watertight composition and the insulating core is filled with waterproofing rope; also be provided with the protection conductor in the watertight composition; the protection conductor contacts with watertight composition; watertight composition also is coated with oversheath outward; insulating core includes copper conductor, fireprotection layer, insulating barrier; wherein, fireprotection layer is wrapped in the copper conductor outside, and insulating barrier is coated on the fireprotection layer outside.
Described insulating core is many, and is assemblied in the watertight composition behind the stranded stranding of protection conductor.
The laying up pitch of described insulating core and protection conductor is less than or equal to ten times of laying up diameter.
Described fireprotection layer is made by the single or double synthetic mica tape, and its wrapping angle is 45 °, and putting up width is 40～50% of mica tape width.
Described insulating barrier is that 33～35 flame-retardant low-smoke halogen-free polyolefin insulation material forms by extruding oxygen index.
Described watertight composition is that single-side copper-plastic compound belt is made, and the coating mode is for putting up vertical bag, its edge, both sides put up width be single-side copper-plastic compound belt wide 15～20%, and it is bonded to one another to put up the place.
Described oversheath is that 34～36 flame-retardant low-smoke halogen-free polyolefin jacket material forms by extruding oxygen index, and oversheath medial surface and watertight composition lateral surface tight bond.
Described protection conductor is made by the zinc-plated naked copper material of annealing, and its area of section equates with the area of section of copper conductor.
The utility model has metal waterproof belt and inorganic fire belt simultaneously in cable inside after having adopted such scheme.The metal watertight composition is vertical copper-clad plastic composite strip, to put up width overlapping with suitable for two vertical edges, lap can be firm be bonded together, its outside is bonded together with the cable jacket inboard, thereby form a watertight composition of sealing fully, even under the impaired situation of breaking of oversheath, moisture can not enter cable inside yet, also play electromagnetic shielding action simultaneously.When cable jacket burns or under the situation of fire-fighting watering and vibration, copper strips is broken jeopardize insulated wire cores; When flame temperature reaches 950-1000 ℃ following time of serious situation of fire, under all ruined situation of oversheath, copper strips and insulating barrier, the fire-resistant isinglass belt of conductive surface still can make cable keep energising at least 90 minutes, if flame temperature is 750 ℃, then can make cable keep energising more than 3 hours, thereby help fire rescue and personnel withdraw; Insulating barrier and oversheath adopt the low-smoke halogen-free polyolefin material, only give out the white smoke of trace during burning, do not contain toxic hydrogen chloride gas, do not distribute toxicity and corrosive gas, help biochemical environmental protection.Anneal zinc-plated naked copper protective wire and copper strips contacts with each other, and can effectively bring into play the ground protection function.Adopt not only fire prevention of cable behind this programme, waterproof, but also can electromagnetic shielding, also have environmental protection characteristic, safe and reliable and construction of cable softness, in light weight, simple installation, need not special tool(s).
Description of drawings:
Fig. 1 is the utility model overall structure schematic diagram.
Reference numeral: 1-copper conductor, 2-fireprotection layer, 3-insulating barrier, 4-watertight composition, 5-protection conductor, 6-waterproofing rope, 7-oversheath, 8-insulating core.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing 1, preferred embodiment of the present utility model is: the described low smoke and zero halogen fire alarm of present embodiment cable includes insulating core 8, insulating core 8 is positioned at watertight composition 4, insulating core 8 includes copper conductor 1, fireprotection layer 2, insulating barrier 3, wherein, fireprotection layer 2 is wrapped in copper conductor 1 outside, fireprotection layer 2 by wrapped in the same way two thickness at least the single or double synthetic mica tape of 0.12mm make, its wrapping angle is 45 °, and putting up width is 40～50% of mica tape width.When flame temperature reaches 950-1000 ℃ following time of serious situation of fire, the fire-resistant isinglass belt of conductive surface still can make cable keep energising at least 90 minutes, if flame temperature is 750 ℃, then can makes cable keep energising more than 3 hours, thereby help fire rescue and personnel withdraw.Insulating barrier 3 is coated on fireprotection layer 2 outsides.Insulating barrier 3 is that 33～35 flame-retardant low-smoke halogen-free polyolefin insulation material is made by extruding oxygen index, and its manufacture method adopts suitable extrusion temperature and extruded velocity, especially need be strictly on guard against into water, incipient scorch and breakage in manufacturing process.Watertight composition 4 is made for the single-side copper-plastic compound belt of copper base band thickness 0.2mm, the coating mode is for putting up vertical bag, its edge, both sides put up width be single-side copper-plastic compound belt wide 15～20%, and putting up partial continuous, bond together securely after overlapping each other.Thereby form a watertight composition of sealing fully,, also play electromagnetic shielding action simultaneously even under the impaired situation of breaking of oversheath, moisture can not enter cable inside yet.The insulating core 8 of this programme is many, and is assemblied in the watertight composition 4 behind the protection conductor 5 stranded strandings in watertight composition 4, and protection conductor 5 is made by the zinc-plated naked copper material of annealing, and its area of section equates with the area of section of copper conductor 1.For multicore cable, be with insulating core 8 with protection conductor 5 stranded strandings, laying up pitch is less than 10 times of laying up diameter.And naked copper protection conductor must contact with each other with the watertight composition 4 in its outside.All fill with waterproofing rope 6 in space between insulating core 8 and the watertight composition 4, but can not influence contacting of annealing naked copper protection conductor and watertight composition 4.Also be coated with oversheath 7 outside the watertight composition 4, the material of oversheath 7 is the oxygen index flame-retardant low-smoke halogen-free polyolefin jacket material of 34-36 at least, adopts suitable extrusion temperature and extruded velocity, is strictly on guard against water inlet in the extrusion, incipient scorch and breakage.Being coated with the plastic film fusion and being bonded as suitable fully with the sheath inboard of the bonded to one another and outside, the vertical bag of the compound copper-plastics band place of putting up be extruded, can be guaranteed again to make to the setting of extrusion temperature should smoothly can guarantee protective cover material.After insulating barrier 3 and oversheath 7 adopt the low-smoke halogen-free polyolefin material, only give out the white smoke of trace during burning, do not contain toxic hydrogen chloride gas, do not distribute toxicity and corrosive gas, help biochemical environmental protection.
The embodiment of the above is the preferred embodiment of the utility model only, is not to limit practical range of the present utility model with this, so the variation that all shapes according to the utility model, principle are done all should be encompassed in the protection range of the present utility model.
Claims (8)
1. the low smoke and zero halogen fire alarm cable of a fire-proof and water-proof; it includes insulating core (8); it is characterized in that: insulating core (8) is positioned at watertight composition (4); gap location between watertight composition (4) and the insulating core (8) is filled with waterproofing rope (6); also be provided with protection conductor (5) in the watertight composition (4); protection conductor (5) contacts with watertight composition (4); the outer oversheath (7) that also is coated with of watertight composition (4); insulating core (8) includes copper conductor (1); fireprotection layer (2); insulating barrier (3); wherein; fireprotection layer (2) is wrapped in copper conductor (1) outside, and insulating barrier (3) is coated on fireprotection layer (2) outside.
2. the low smoke and zero halogen fire alarm cable of a kind of fire-proof and water-proof according to claim 1, it is characterized in that: insulating core (8) is many, and is assemblied in the watertight composition (4) behind the stranded stranding of protection conductor (5).
3. the low smoke and zero halogen fire alarm cable of a kind of fire-proof and water-proof according to claim 1 is characterized in that: insulating core (8) and the laying up pitch of protection conductor (5) are less than or equal to ten times of laying up diameter.
4. the low smoke and zero halogen fire alarm cable of a kind of fire-proof and water-proof according to claim 1, it is characterized in that: fireprotection layer (2) is made by the single or double synthetic mica tape, and its wrapping angle is 45 °, and putting up width is 40～50% of mica tape width.
5. the low smoke and zero halogen fire alarm cable of a kind of fire-proof and water-proof according to claim 1 is characterized in that: insulating barrier (3) is that 33～35 flame-retardant low-smoke halogen-free polyolefin insulation material forms by extruding oxygen index.
6. the low smoke and zero halogen fire alarm cable of a kind of fire-proof and water-proof according to claim 1, it is characterized in that: watertight composition (4) is made for single-side copper-plastic compound belt, the coating mode is for putting up vertical bag, its edge, both sides put up width be single-side copper-plastic compound belt wide 15～20%, and put up the place bonded to one another.
7. the low smoke and zero halogen fire alarm cable of a kind of fire-proof and water-proof according to claim 1, it is characterized in that: oversheath (7) is that 34～36 flame-retardant low-smoke halogen-free polyolefin jacket material forms by extruding oxygen index, and oversheath (7) medial surface and watertight composition (4) lateral surface tight bond.
8. the low smoke and zero halogen fire alarm cable of a kind of fire-proof and water-proof according to claim 1 is characterized in that: protection conductor (5) is made by the zinc-plated naked copper material of annealing, and its area of section equates with the area of section of copper conductor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200262463U CN201607970U (en) | 2010-01-07 | 2010-01-07 | Fireproof and waterproof LSZH fire alarm cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200262463U CN201607970U (en) | 2010-01-07 | 2010-01-07 | Fireproof and waterproof LSZH fire alarm cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201607970U true CN201607970U (en) | 2010-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200262463U Expired - Fee Related CN201607970U (en) | 2010-01-07 | 2010-01-07 | Fireproof and waterproof LSZH fire alarm cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201607970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871664A (en) * | 2014-02-23 | 2014-06-18 | 安徽华海特种电缆集团有限公司 | Low-smoke halogen-free rare earth aluminum alloy power cable |
-
2010
- 2010-01-07 CN CN2010200262463U patent/CN201607970U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871664A (en) * | 2014-02-23 | 2014-06-18 | 安徽华海特种电缆集团有限公司 | Low-smoke halogen-free rare earth aluminum alloy power cable |
| CN103871664B (en) * | 2014-02-23 | 2016-04-06 | 安徽华海特种电缆集团有限公司 | A kind of low smoke and zero halogen rare earth aluminum alloy power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20170107 |