CN201804614U

CN201804614U - Low smoke zero halogen (LSZH) irradiation cross-linked waterproof, anti-flaming and anti-termite control cable for rail transportation

Info

Publication number: CN201804614U
Application number: CN2010202184401U
Authority: CN
Inventors: 翟孟刚; 宋怀旭; 潘茂龙; 王清保; 王向东
Original assignee: SHANDONG HUALING CABLE CO Ltd
Current assignee: SHANDONG HUALING CABLE CO Ltd
Priority date: 2010-06-08
Filing date: 2010-06-08
Publication date: 2011-04-20
Anticipated expiration: 2020-06-08

Abstract

The utility model discloses a cable, and particularly relates to a low smoke zero halogen (LSZH) irradiation cross-linked waterproof, anti-flaming and anti-termite control cable for rail transportation. The control cable comprises a plurality of conductors, conductor insulating layers, two shielding layers, two waterproof layers and an outer sheath which are sequentially arranged from inside to outside, wherein the conductor insulating layers are made of an LSZH irradiation cross-linked insulating material; infill made of an LSZH anti-flaming material is filled among the conductor insulating layers and the shielding layers; and the outer sheath is made of an LSZH anti-termite and anti-flaming polyolefin material. The utility model has the benefits of environment friendliness, termite prevention, simple structure, convenience in use, high anti-jamming capability and weather resistance, as well as stability and reliability in operation.

Description

Track traffic is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof cable that blocks water

Technical field

The utility model relates to a kind of cable, relates in particular to a kind of track traffic with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water.

Background technology

At present, the communication equipment that China's subway construction is used, signal system and tractive power supply system etc., all or very most of production domesticization, track traffic also along with increasing, will bring a very big market space with cable to China's cable industry.Because the environment of track traffic operation and the particularity of use, used cable mostly require low cigarette not have (low) halogen, fire-retardant, fire-resistant, oil resistant, ultraviolet resistance, moisture resistance, waterproof, mildew-resistant, protection against rodents etc., south also requires termite-proof.Because the life habit of termite, hazard approach is comparatively special, and cable is laid in underground again for a long time, and termite damage is hidden, therefore generally is difficult for discovering and getting rid of before killed.In case find, promptly played fault or caused the accident, and check after killed and maintenance very difficult again, cause economic loss, so plastic cable uses with burying, prevent termite is very important.The termite-proof branch that chemical method and physical method are arranged of cable.Chemical method is to add pesticide in cable jacket material, principal item has Niran, dieldrite, drinox, heptachlor etc., the long-term proof of using has good anti-ant effect, but, owing to poison health in the volatilization of being heated of sheath extrusion process Chinese traditional medicine, cable use the age long afterwards medicine can from sheath, move, soil and water source are polluted.So-called " physics is prevented the ant method " mainly is to utilize the hardness of plastics and the smoothness of cable surface to reach the purpose that prevents termite attack, but not utilizes the insecticidal action of chemical substance.Studies have shown that according to the bite hardness limit of thing of termite, general available shore hardness is as criterion.When material hardness during less than Shao Shi D70 termite can sting movingly, and if hardness greater than D70, body surface is smooth, the termite end opening of then having no way of; But being cable laying, the English walnut of high rigidity bring difficulty and material can not satisfy environmental requirement.

Summary of the invention

For solving above technical deficiency, the utility model provide a kind of have environmental protection, fire-retardant, block water, the termite-proof control cable of low-smoke non-halogen flame-retardant of advantage such as termite-proof, simple in structure, easy to use, the weatherability that can effectively improve cable and antijamming capability.

The utility model is realized by following measure:

A kind of track traffic of the utility model is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, comprise some conductors, insulating layer of conductor, screen, water blocking layer and oversheath from inside to outside successively, be filled with the low-smoke non-halogen flame-retardant obturator between described insulating layer of conductor and the screen, described screen is two-layer, described water blocking layer is two-layer, oversheath is termite-proof low smoke halogen-free flame-retardant polyolefin oversheath, and insulating layer of conductor is a low-smoke and flame retardant cross-linking radiation insulating barrier.

Track traffic of the present utility model is disposed with inner covering and armour from inside to outside with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water between described screen and the water blocking layer.

Track traffic of the present utility model is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, described screen is divided into internal layer lapped shielding layer and outer braid screen, the internal layer lapped shielding layer is a compound copper-plastics band, and the outer braid screen is copper wire or tinned copper wire or aluminium in copper magnesium braid over braid.

Track traffic of the present utility model is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, and described water blocking layer is compounded two-layer by non-woven fabric of polyester fiber and water absorption expanding material.

Track traffic of the present utility model is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, and conductor is an annealed copper wire.

Track traffic of the present utility model is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, and described conductor is single copper cash or stranded conductor.

The beneficial effects of the utility model are: environmental protection, termite-proof, simple in structure, easy to use, antijamming capability are strong, good weatherability, working stability are reliable.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among the figure: 1. conductor, 2. insulating layer of conductor, 3. internal layer lapped shielding layer, 4. low-smoke non-halogen flame-retardant obturator, 5. outer braid screen, 6. inner covering, 7. armour, 8. water blocking layer, 9. oversheath.

Embodiment

Embodiment 1:

As shown in Figure 1, a kind of track traffic of the present utility model is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, comprise plurality of conductors 1, insulating layer of conductor 2, screen, water blocking layer 8 and oversheath 9, insulating layer of conductor 2 is a low-smoke and flame retardant cross-linking radiation insulating material, fill promising low-smoke non-halogen flame-retardant obturator 4 between insulating layer of conductor 2 and the screen, screen is two-layer, and described water blocking layer is two-layer, and oversheath 9 is made for termite-proof low-smoke and halogen-free flame retardant polyolefin jacket material.Conductor 1 adopts seven, the every conductor 1 outer insulating layer of conductor 2 that all is with, and the material of insulating layer of conductor 2 adopts the low cigarette Insulation Material of 150 ℃ of environment-friendly type irradiation crosslinking halogen-frees.This Insulation Material had both guaranteed that product has resistance to elevated temperatures, good electric property and mechanical performance, had guaranteed the environmental-protecting performance of product again.Be provided with the double layer screen layer between low-smoke non-halogen flame-retardant obturator 4 and the oversheath 9, screen comprises internal layer lapped shielding layer 3 and outer braid screen 5, internal layer lapped shielding layer 3 is a compound copper-plastics band, and outer braid screen 5 is copper wire or tinned copper wire or aluminium in copper magnesium braid over braid.Double layer screen has changed the individual layer copper wire braid shielded of control cable in the past, and the antijamming capability to external world that the shielding of double-deck different materials has strengthened cable has also increased the mechanical performance of cable, uses drainage thread to make shield effectiveness more reliable.The wrapped shielding of compound copper-plastics band promptly has the shielding properties of copper strips, contains and moulds the band mechanical stress, makes screen firm more, reliable; Tinned copper wire braiding makes the screen of cable have corrosion-resistant, oxidation resistant characteristic, in the useful life of the cable shield of increase, makes the performance shielding action that screen more can be permanent.Oversheath 9 is for adopting termite-proof 90 ℃ of low-smoke and halogen-free flame retardant polyolefin jacket materials.Characteristics such as protective cover material has that anti-cracking performance is excellent, thermal contraction is little, easy processing, taste are little, LSOH anti-flaming the most important thing is effectively to prevent the termite destruction that bites.Water blocking layer 8 is composited successively for non-woven fabric of polyester fiber and high-hydroscopicity expanding material.After oversheath 9 damage water inlets, water blocking layer 8 water-swellables, because water blocking layer 8 surfaces externally and internallies all are cylinders, after water blocking layer 8 expanded, the very fast formation section of blocking water had stoped the further infiltration of water, has increased the block-water performance of cable.

Embodiment 2:

Be disposed with inner covering 6 and armour 7 between outer field screen and the water blocking layer 8 from inside to outside.Inner covering 6 can be for extruding or wrapped, and material therefor is the low-smoke non-halogen flame-retardant environment-friendly materials.The outer wrapped water blocking layers 8 of armature of cable layer 7, other with embodiment 1 in consistent.

Claims

1. a track traffic is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, comprise some conductors (1), insulating layer of conductor (2), screen, water blocking layer (8) and oversheath (9) from inside to outside successively, it is characterized in that: be filled with low-smoke non-halogen flame-retardant obturator (4) between described insulating layer of conductor (2) and the screen, described screen is two-layer, described water blocking layer (8) is two-layer, oversheath (9) is termite-proof low smoke halogen-free flame-retardant polyolefin oversheath, and insulating layer of conductor (2) is a low-smoke and flame retardant cross-linking radiation insulating barrier.

2. track traffic according to claim 1 is characterized in that: be disposed with inner covering (6) and armour (7) between described screen and the water blocking layer (8) from inside to outside with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water.

3. track traffic according to claim 1 is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, it is characterized in that: described screen is divided into internal layer lapped shielding layer (3) and outer braid screen (5), internal layer lapped shielding layer (3) is a compound copper-plastics band, and outer braid screen (5) is copper wire or tinned copper wire or aluminium in copper magnesium braid over braid.

4. track traffic according to claim 1 is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, and it is characterized in that: described water blocking layer (8) is for compounded two-layer by non-woven fabric of polyester fiber and water absorption expanding material.

5. track traffic according to claim 1 is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, and it is characterized in that: described conductor (1) is an annealed copper wire.

6. track traffic according to claim 1 is with the low smoke and zero halogen cross-linking radiation fire-retardant termite-proof control cable that blocks water, and it is characterized in that: described conductor (1) is single copper cash or stranded conductor.