CN102831976B - Preparation method of low-smoke halogen-free low-toxicity fire-proof filling core for ship control and power cables - Google Patents

Abstract

The invention relates to a preparation method of a low-smoke halogen-free low-toxicity fire-proof filling core for ship control and power cables, which comprises the following processing steps of: (1) selecting a plurality of low-toxicity halogen-free fire-proof cotton tapes; (2) respectively winding the tapes around different plate diameters through a tape winding machine; (3) rewinding the wound tapes; (4) installing a cable plate on a cabling machine or bunching machine for bunch-stranding, and adjusting the pitch of the cabling machine to the maximum pitch; (5) adjusting the bunching direction; and (6) selecting an appropriate mold to compact each cotton tape. The low-smoke halogen-free low-toxicity fire-proof filling core is applicable to performance requirements in GJB1916-94 General Specifications of Low-Smoke Cables and Flexible Wires for Ships for ship cables and has the advantages of irradiation resistance, light weight, wide temperature resistance range and stable performance, the traditional extruded solid core type is broken through, and the preparation method is simple and controllable. The tape materials are bunched and stranded into rope shape to ensure the outer diameter of the filling core, the filling core has rebound resilience, the filling rate of cable gaps is ensured, the cable roundness and the production rate are increased, and the cost is reduced.

Description

The fire-retardant filled core preparation method of low-smoke zero-halogen low-toxicity for power cable is controlled on naval vessel

Technical field

What the present invention relates to is that the preparation method of low-smoke zero-halogen low-toxicity flame-proof light filled core for power cable is controlled on a kind of naval vessel, belongs to low cigarette for naval vessel, Halogen, low toxicity cable technology field.

Background technology

State-of-the-art cable for ship standard in the world at present, when pushing away MIL-DTL-24643, existing U.S. army mark MIL-DTL-24643 2002 general structures are comprised of two parts, first is MIL-DTL-24643B 2002 naval vessels low smoke cables and flexible cord general specifications, and second portion is low smoke cables and flexible cord series closed specifications for MIL-DTL-24643/2 2002～MIL-DTL-24643/58 2002 naval vessels.China has implemented GJB1916-94 < < naval vessel with low smoke cables and flexible cord general specification > > but there is no the closed specification of specific product in issue in 1994.The shortcoming of the filling adopting traditionally: asbestos, glass fiber, real core rubber strip has certain harm to human body, and not too environmental protection, the packing of extruding the not only prices of raw and semifnished materials is expensive and should not control in process of manufacture, production efficiency is lower, simultaneously, tradition is to be extruded and in the process of extruding, needed debugging to mould by plastic extruding machine with ethylene propylene rubber insulated or crosslinked polyethylene core, simultaneously external diameter extrude unstable and extrude after core relatively hard, should not compress, lower to the filling rate in cable gap, flexibility is poor.Low-smoke zero-halogen low-toxicity flame-proof light filled core preparation method for power cable is controlled on traditional naval vessel, and its technique need adopt special low flue unhalogen flame-retarded ethylpropyl rubber to extrude and the uniformity of external diameter should not be controlled.

Summary of the invention

What the present invention proposed is that the preparation method of low-smoke zero-halogen low-toxicity flame-proof light filled core for power cable is controlled on a kind of naval vessel, its object is intended to improve flexibility, the rounding property of cable, can in the environment of mobile occasion, keep its excellent electric property and mechanical performance again simultaneously.

Technical solution of the present invention: the preparation method of low-smoke zero-halogen low-toxicity flame-proof light filled core for power cable is controlled on naval vessel, comprises following processing step:

1) by many width, be 20-90mm, the low-smoke bittern-free highly fire-proof strap that thickness is 0.15mm, cuts respectively by tape-cutting machine, and being cut into width is 15mm or 20mm or 25mm or 30mm or 40mm;

2) by described strap again through band machine again hold up around, hold up respectively on different disk tracks;

3) by hold up around plate, carry out rewinding, pour on cable hank;

4) by the dish tool of cable, be arranged on cabler or bunching machine and restraint strand, the pitch of cabler is adjusted to 500-800 mm pitch, object is speed production rate, can make each strap diameter restraint and close unanimously simultaneously;

5) direction of closing according to different technological requirement halved ties regulates, and is adjusted into dextrad, and in the process of closing at bundle, the parameter of equipment is set to back twist state, avoids the continuous accumulation of torsion in process of production that filled core is twisted off;

6) meanwhile when bundle closes, select suitable mould that each strap is pressed, be pressed onto the size of technological requirement.

Advantage of the present invention: 1) ship cable is to use bank electric power in the unsteady building environment in sea such as warship, river seagoing vessel oceangoing ship and offshore oil platform and while berthing to be connected to ship's fitting to provide power.2) flexibility of cable, rounding property characteristic have been had to the raising of matter, can in the environment of mobile occasion, keep its excellent electric property and mechanical performance again simultaneously, make common ship cable possess more stable structure profile, guaranteed that cable is used for a long time under mobile occasion, for ship's fitting is normal, safety, stable, operation reliably provides guarantee; 3) original real cored structure and glass fiber, polypropylene mesh rope or asbestos sliver structure have been substituted, met again " low smoke cables and flexible cord general specification for GJB1916-94 naval vessel " and " IEC60092-350 2001 the 350th part: ship power cable, general structure and test requirements document " and IEC60092-353 2001 the 353rd part: rated voltage is single core of 1kV and 3kV and the power cable that multicore extrudes real core insulation, radiationless field simultaneously " in performance requirement to cable for ship.

Accompanying drawing explanation

Accompanying drawing 1 is the structural representation that power cable is controlled on naval vessel.

Embodiment

Contrast accompanying drawing 1, the structure that power cable is controlled on naval vessel is that the periphery of the conductor 1 that tinned copper wire twisted together with electric wire cable wire twisting machine or bunching machine is wrapping insulation layer 2, the periphery of wrapping insulation layer be the low flue unhalogen flame-retarded ethylpropyl rubber insulated wire cores extruded with cable plastic extruding machine and through electron accelerator irradiation crosslinked extrude insulating barrier 3, the periphery of extruding insulating barrier be with cabler by a plurality of insulated wire cores stranded and wrapped special filled core 4 together, the periphery of special filled core is the low smoke and zero halogen cross-linked polyolefin material of extruding with plastic extruding machine the inner restrictive coating 5 that passes through electron accelerator irradiation, the periphery of inner restrictive coating be with the tinned copper wire of braiding machine braiding as armour 6.

It is described that what extrude a plurality of insulated wire cores gap-fills in insulating barrier is special filled core.

Embodiment

The manufacture craft of this filled core substitutes traditional glass fiber, the hatching solid core of asbestos and extruded type, due to glass fiber, not environmental protection of asbestos and harmful, extruding Shi Shixin fills out core and controls very tight to filling out the external diameter of core, and external diameter must guarantee uniformity, otherwise when producing, stranding operation has a strong impact on the outside diameter of cable, if especially major diameter is filled out core and is filled out core diameter inequality, when finished cable is produced, external diameter is uneven and easily occur twisted shape, in use more easily damage simultaneously, reduce the useful life of cable; Diameter buying band, little external diameter filled core closes direct one-tenth rope form by strand winder bundle, major diameter filled core can be stranded and with the wrapped one deck of machine by cabler, the roundness of core is filled out in assurance, also can adopt strand winder Shu Hehou simultaneously, carry out strandedly, because this structure has resilience, the uniformity of external diameter needn't be controlled specially again.

Concrete process is:

1) by many width, be 20-90mm, the low-smoke bittern-free highly fire-proof strap that thickness is 0.15mm, cuts respectively by tape-cutting machine, and being cut into width is 15mm or 20mm or 25m or 30mm or 40mm;

2) by belt again through band machine again hold up around, hold up respectively on different disk tracks;

3) by hold up around plate, carry out rewinding, pour on cable hank;

4) by the dish tool of cable, be arranged on cabler or bunching machine and restraint strand, the pitch of cabler is adjusted to the maximum pitch of equipment, object is speed production rate, can make each strap diameter restraint and close unanimously simultaneously;

5) direction of closing according to different technological requirement halved ties regulates, and is conventionally adjusted into dextrad, and in the process of closing at bundle, the parameter of equipment is set to back twist state, avoids the continuous accumulation of torsion in process of production that filled core is twisted off;

6) meanwhile when bundle closes, select suitable mould that each strap is pressed, be pressed onto the size of technological requirement.

Embodiment, by 4 width, be 20mm, thickness is that the low-smoke non-halogen flame-retardant strap of 0.15mm is restrainted and closed, the diameter of selection meeting line mould is 4.5 mm, make Shu Hehou external diameter being controlled in 4.5mm tightly, when fire-retardant strap is by after can line mould, with taping head, at its external diameter, carry out one deck wrapped, filled core bag tighter that makes this Shu Hehou, external diameter is less; Then pulling up of process traction wheel, receives on take-up reel, guarantees that the even tension of each cloth interband is consistent, has guaranteed again good elasticity simultaneously; Make when filling more rounding and closely knit, simultaneously owing to there being again air in the process of closing at bundle, make this kind fill out core lighter, than onesize real core filling weight, alleviate 10% ~ 20%.

Owing to filling out core, to adopt halogen-free low-smoke flame retardant material to carry out stranded, in stranded process, produces gap, is equivalent to air and fills, and greatly alleviated weight, and the density of band own is lower simultaneously, and the production by this technique further reduces weight.In process of manufacture, substitute asbestos and glass fiber, avoided the direct contact of human body to asbestos or glass fiber, harmless, environmental protection more simultaneously.When fire occurs, produce hardly toxic gas and dense smoke, suppress spreading of flame, because not producing hydrogen halide, reduced the secondary disaster that precision instrument and equipments such as the instrument and meter in surrounding environment etc. are caused.When only extruding for traditional handicraft, the purchase cost of this band fills out the part of the core prices of raw and semifnished materials, the greatly low purchase cost that reduced.Traditional extrusion way in the process of processing needs constantly adjust the polarization of mould and observe the smoothness of filling out wicking surface before production, has wasted a large amount of raw material, and new technology directly can be produced without the preparation of doing early stage.This processing technology adopts special the forming of low smoke and zero halogen strip material, has the characteristic of band softness, and filling rate is higher simultaneously, and cable roundness is higher and meet the requirement of the performances such as the low cigarette of GJB1916-94, Halogen, low toxicity.

Can meet " GJB1916-94 naval vessel with low smoke cables and flexible cord general specification " and " IEC60092-350 2001 the 350th part: ship power cable, general structure and test requirements document " and IEC60092-353 2001 the 353rd part: rated voltage is single core of 1kV and 3kV and the power cable that multicore extrudes real core insulation, radiationless field " in performance requirement to cable for ship.This filling work procedure adopts the stranded filled core of the first Shu Hehou of band, and the technique of filling out core during alternative extruding.

Filled core enough meets " low smoke cables and flexible cord general specification for GJB1916-94 naval vessel " and " IEC60092-350 2001 the 350th part: ship power cable; general structure and test requirements document " and IEC60092-353 2001 the 353rd part: rated voltage is single core of 1kV and 3kV and the power cable that multicore extrudes real core insulation, radiationless field " in performance requirement to cable for ship, the low cigarette of filled core tool, Halogen, low toxicity, the characteristic such as fire-retardant.

Claims (1)

1. the preparation method of low-smoke zero-halogen low-toxicity flame-proof light filled core for power cable is controlled on naval vessel, it is characterized in that the method comprises following processing step:

1) by many width, be 20-90mm, the low-smoke bittern-free highly fire-proof strap that thickness is 0.15mm, cuts respectively by tape-cutting machine, and being cut into width is 15mm or 20mm or 25mm or 30mm or 40mm;

2) by described strap again through band machine again hold up around, hold up respectively on different disk tracks;

3) by hold up around plate, carry out rewinding, pour on cable hank;

4) by the dish tool of cable, be arranged on cabler or bunching machine and restraint strand, the pitch of cabler is adjusted to 500-800 mm pitch, object is speed production rate, can make each strap diameter restraint and close unanimously simultaneously;

5) direction of closing according to different technological requirement halved ties regulates, and is adjusted into dextrad, and in the process of closing at bundle, the parameter of equipment is set to back twist state, avoids the continuous accumulation of torsion in process of production that filled core is twisted off;

6) meanwhile when bundle closes, select suitable mould that each strap is pressed, be pressed onto the size of technological requirement.