CN102103898A - Digital closed circuit TV (television) cable for marine engineering and manufacturing method thereof - Google Patents
Digital closed circuit TV (television) cable for marine engineering and manufacturing method thereof Download PDFInfo
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- CN102103898A CN102103898A CN 201010606710 CN201010606710A CN102103898A CN 102103898 A CN102103898 A CN 102103898A CN 201010606710 CN201010606710 CN 201010606710 CN 201010606710 A CN201010606710 A CN 201010606710A CN 102103898 A CN102103898 A CN 102103898A
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Abstract
The invention discloses a digital closed circuit TV (television) cable for marine engineering and a manufacturing method thereof, belonging to the field of cables. The cable is characterized in that a cable core is formed by stranding three power cables, a network cable and a plurality of filling cores; the three power cables are closely linked with each other and are arranged on the periphery of the network cable; the filling cores ensure the cable core to be round; a halogen-free polyolefin outer sheath is extruded on the periphery of the cable core; each power cable is formed by a power cable conductor and a power cable insulating layer covering the power cable conductor; the network cable comprises a network cable core formed by stranding four twisted core wires; the periphery of the network cable core is covered by a network cable aluminium foil layer and a network cable braid; the center of each twisted core wire comprises a twisted wire pair and a drainage wire; each twisted wire pair is formed through mutual stranding of two insulated core wires; the twisted wire pairs and the drainage wires are lapped by aluminium foil and polyester composite strips; the aluminium layers of the composite strips faces inwards; and the drainage wires and the aluminium layers of the aluminium foil and polyester composite strips are electrically contacted with each other. The cable can provide power and data signals.
Description
Technical field
The present invention relates to a kind of cable, particularly a kind of boats and ships and ocean engineering are with digital closed-circuit television cable.The invention still further relates to a kind of boats and ships and ocean engineering manufacture method with digital closed-circuit television cable.
Background technology
Twisted pair wire is that the lead by two mutually insulateds is intertwined mutually according to certain specification and a kind of general distribution made, is commonly used for the transmission medium of communication network, also is widely used in digital closed-circuit television.But twisted pair wire intensity common on the market is low, shield effectiveness is poor, and closed-circuit television also needs supporting separately power cable when using, and is not suitable for narrow and small environment such as ships, and multi-path line intersects, and generation is in disorder easily in use.
Summary of the invention
Primary and foremost purpose of the present invention is, overcomes problems of the prior art, provides a kind of boats and ships and ocean engineering with digital closed-circuit television cable, both can satisfy the instructions for use of digital closed-circuit television to power cable, can provide the multichannel data signal again.
For solving above technical problem, a kind of boats and ships provided by the present invention and ocean engineering are with digital closed-circuit television cable, the Halogen non-hygroscopic that cable core is differed by three power cables, a branch of network cable and many diameter fills out that core is stranded to form, and three power cables closely link to each other and are arranged in the peripheries of described network cable; The described core of filling out is filled in the slit between described power cable and the described network cable successively by diameter, makes described cable core rounding; The periphery of described cable core is extruded with the halogen-free polyolefin oversheath, and the thickness of described oversheath is 1.3～1.5mm; Every described power cable is by the power cable conductor that is positioned at the center and be coated on the outer power cable insulation layer of described power cable conductor and form; Described network cable comprises that stranded lay ratio is 12～16 times by four stranded network cable cable cores that form of pair twist heart yearn, and four described pair of twisted cores cabling lay ratios are different; The periphery of described network cable cable core is coated with the network cable aluminium foil layer, and the periphery of described network cable aluminium foil layer is coated with the network cable braid; The center of every described pair twist heart yearn comprise one group of twisted pair wire to a copper conductor drainage thread, described twisted pair wire is to heart yearns stranded the forming mutually of being insulated by two sub-threads, described sub-thread insulation heart yearn comprises the twisted pair wire conductor that is positioned at the center and is coated on the outer twisted pair wire insulating barrier of described twisted pair wire conductor, described twisted pair wire is to being surrounded with aluminium foil polyester composite band outward with drainage thread, the aluminium lamination of described aluminium foil polyester composite band is inside, and described drainage thread is electric with the aluminium lamination of described aluminium foil polyester composite band and contacts.
With respect to prior art, the present invention has obtained following beneficial effect: three power cables can satisfy the instructions for use of digital closed-circuit television to power supply, a branch of network cable can provide the multichannel data signal, a cable can solve the problem of electric power and signal, easy to carry, be particularly useful for the narrow and small environment of boats and ships; Four pair of twisted cores cabling lay ratios are different in the network cable, can avoid the signal between the twisted pair wire to interfere with each other; Twisted pair wire has drainage thread to all supporting, and drainage thread is electric with the aluminium lamination of described aluminium foil polyester composite band and contacts, and can reduce the signal noise of twisted pair wire; Every pair twist heart yearn all is surrounded with aluminium foil polyester composite band outward, coats network cable aluminium foil layer, network cable braid again after four pair twist heart yearns are stranded, forms triple shieldings.
As preferred version of the present invention, stranded the forming of tinned copper wire that described power cable conductor is 0.25mm～0.28mm by 49 diameters, stranded lay ratio is 9～12 times; Described power cable insulation layer adopts the fire-retardant Halogen material of the low-density of high insulation resistance, and thickness is 0.6mm～0.8mm.The conductor resistance of this power cable≤8.21 Ω/km, insulation resistance 〉=20M Ω/km, working voltage are 220V, durability is good.
As preferred version of the present invention, stranded the forming of tinned copper wire that described twisted pair wire conductor is 0.20mm～0.24mm by seven diameters, the stranded lay ratio of described twisted pair wire conductor is 8～12 times; The fire-retardant Halogen material of the low-density that described twisted pair wire insulating barrier adopts high insulation resistance, thickness is 0.30mm～0.35mm, the insulation external diameter is 1.1mm～1.3mm; The right stranded lay ratio of described twisted pair wire is 9～12 times.The loop resistance of pair twist core≤160 Ω/km, insulation resistance 〉=5G Ω/km, propagation delay time≤5.3ns/m, durability is good.
As preferred version of the present invention, stranded the forming of tinned copper wire that drainage thread is 0.20mm～0.24mm by seven diameters, stranded lay ratio is 8～12 times; The wrapped number of plies of described aluminium foil polyester composite band is two-layer, and every layer the rate of putting up is 30%～35%; The periphery of described aluminium foil polyester composite band is surrounded with the polyester film spy.The rate of putting up of aluminium foil polyester composite band is 30%～35% and wrapped two-layer, can improve shield effectiveness; Mylar tape is fixed aluminium foil polyester composite band.
As preferred version of the present invention, described network cable aluminium foil layer is by wrapped the forming of aluminium foil polyester composite band, and the rate of putting up is not less than 20%; Described network cable braid is that the tinned copper wire braiding of 0.15mm～0.18mm forms by diameter, and percentage of braiding coverage is 95%～98%.The common whole dual shield that forms network cable of network cable aluminium foil layer and network cable braid.
Another object of the present invention is, a kind of boats and ships and the ocean engineering manufacture method with digital closed-circuit television cable is provided, the cable that this method manufacturing forms both can satisfy the instructions for use of digital closed-circuit television to power cable, can provide the multichannel data signal again.
For solving above technical problem, a kind of boats and ships provided by the present invention and ocean engineering are with the manufacture method of digital closed-circuit television cable, comprise the steps: that the tinned copper wire that (1) is 0.25mm～0.28mm with 49 diameters is twisted into power cable conductor, stranded lay ratio is 9～12 times; Adopt the fire-retardant Halogen material of low-density of high insulation resistance to extrude power cable insulation layer then outside described power cable conductor, extruding thickness is 0.6mm～0.8mm; (2) tinned copper wire that is 0.20mm～0.24mm with seven diameters is twisted into the twisted pair wire conductor, and stranded lay ratio is 8～12 times; Periphery at described twisted pair wire conductor adopts the fire-retardant Halogen material of low-density of high insulation resistance to extrude the twisted pair wire insulating barrier, and extruding thickness is 0.30mm～0.35mm, and the insulation external diameter is 1.1mm～1.3mm; Thoroughly doing away with the edge heart yearns with two, to be twisted into twisted pair wire right, and stranded lay ratio is 9～12 times; The tinned copper wire that is 0.20mm～0.24mm with seven diameters is twisted into drainage thread, and stranded lay ratio is 8～12 times; One group of described twisted pair wire to the wrapped aluminium foil polyester of the periphery of described drainage thread composite band, the wrapped number of plies is two-layer, every layer the rate of putting up is 30%～35%, and the aluminium lamination of described aluminium foil polyester composite band is inside, and described drainage thread is electric with the aluminium lamination of described aluminium foil polyester composite band and contacts; Then behind the wrapped mylar tape of periphery of aluminium foil polyester composite band, constitute the pair twist heart yearn; Four described pair twist heart yearns are twisted into the network cable cable core, and stranded lay ratio is 12～16 times, and four described pair of twisted cores cabling lay ratios are different; Then at the periphery of the described network cable cable core wrapped formation network cable of aluminium foil polyester composite band aluminium foil layer, then adopting diameter in the periphery of described network cable aluminium foil layer is that the tinned copper wire woven network cable braid of 0.15mm～0.18mm constitutes a branch of network cable, and percentage of braiding coverage is 95%～98%; (3) with the closely continuous periphery that is arranged in a branch of described network cable of three described power cables; Fill the core of filling out that diameter differs successively by gap size in the slit between described power cable and described network cable, constitute the cable core of whole periphery rounding; (4) periphery at described cable core extrudes the halogen-free polyolefin oversheath, and the thickness of described oversheath is 1.3～1.5mm.
With respect to prior art, the present invention has obtained following beneficial effect: three power cables can satisfy the instructions for use of digital closed-circuit television to power supply, a branch of network cable can provide the multichannel data signal, a cable can solve the problem of electric power and signal, easy to carry, be particularly useful for the narrow and small environment of boats and ships; Four pair of twisted cores cabling lay ratios are different in the network cable, can make stranded more smooth and easy and stranded after have less overall dimension; Twisted pair wire has drainage thread to all supporting, and drainage thread is electric with the aluminium lamination of described aluminium foil polyester composite band and contacts, and can reduce the signal noise of twisted pair wire; Every pair twist heart yearn all is surrounded with aluminium foil polyester composite band outward, coats network cable aluminium foil layer, network cable braid again after four pair twist heart yearns are stranded, forms triple shieldings; The conductor resistance of power cable≤8.21 Ω/km, insulation resistance 〉=20M Ω/km, working voltage are 220V, durability is good; The loop resistance of pair twist core≤160 Ω/km, insulation resistance 〉=5G Ω/km, propagation delay time≤5.3ns/m, durability is good; The rate of putting up of aluminium foil polyester composite band is 30%～35% and wrapped two-layer, can improve shield effectiveness; Mylar tape is fixed aluminium foil polyester composite band.
As preferred version of the present invention, when extruding described halogen-free polyolefin oversheath, the temperature in each district of plastic extruding machine is: 1 district: 100 ℃; 2 districts: 130 ℃; 3 districts: 140 ℃; 4 districts: 150 ℃; 5 districts: 150 ℃; 6 districts: 155 ℃; Head: 150 ℃, the temperature deviation in each district is ± 10 ℃; The linear velocity that goes out that oversheath is extruded is 16～18m/min.The oversheath thickness that extrudes under technology is even, and roundness is good.
Description of drawings
Fig. 1 is boats and ships of the present invention and the ocean engineering structural representation with digital closed-circuit television cable.
Among the figure: 1 power cable; The 1a power cable conductor; The 1b power cable insulation layer; 2 network cables; 2a twisted pair wire conductor; 2b twisted pair wire insulating barrier; The 2c drainage thread; 2d aluminium foil polyester composite band; The 2e mylar tape; 2f network cable aluminium foil layer; 2g network cable braid; 3 fill out core; 4 oversheaths.
Embodiment
Embodiment one
(1) tinned copper wire that is 0.25mm with 49 diameters is twisted into power cable conductor 1a, and stranded lay ratio is 9 times; Adopt the fire-retardant Halogen material of low-density of high insulation resistance to extrude power cable insulation layer 1b formation power cable 1 then outside power cable conductor 1a, extruding thickness is 0.6mm;
(2) tinned copper wire that is 0.2mm with seven diameters is twisted into twisted pair wire conductor 2a, and stranded lay ratio is 8 times; Periphery at twisted pair wire conductor 2a adopts the fire-retardant Halogen material of low-density of high insulation resistance to extrude twisted pair wire insulating barrier 2b, and extruding thickness is 0.3mm, and the insulation external diameter is 1.1mm; Thoroughly doing away with the edge heart yearns with two, to be twisted into twisted pair wire right, and stranded lay ratio is 9 times;
The tinned copper wire that is 0.2mm with seven diameters is twisted into drainage thread 2c, and stranded lay ratio is 8 times;
One group of twisted pair wire to the wrapped aluminium foil polyester of the periphery of drainage thread 2c composite band 2d, the wrapped number of plies is two-layer, every layer the rate of putting up is 30%, and the aluminium lamination of aluminium foil polyester composite band 2d is inside, and drainage thread 2c is electric with the aluminium lamination of aluminium foil polyester composite band 2d and contacts; Then behind the wrapped mylar tape 2e of periphery of aluminium foil polyester composite band 2d, constitute the pair twist heart yearn;
Four pair twist heart yearns are twisted into the network cable cable core, and stranded lay ratio is 12 times, and four pair of twisted cores cabling lay ratios are different; Then at the periphery of the network cable cable core wrapped formation network cable of aluminium foil polyester composite band 2d aluminium foil layer 2f, then adopting diameter in the periphery of network cable aluminium foil layer 2f is that the tinned copper wire woven network cable braid 2g of 0.15mm constitutes a branch of network cable 2, and percentage of braiding coverage is 95%;
(3) with the closely continuous periphery that is arranged in a branch of network cable 2 of three power cables 1; Fill out core 3 by what gap size filled successively that diameter differs in the slit between power cable and network cable 2, constitute the cable core of whole periphery rounding;
(4) periphery at cable core extrudes halogen-free polyolefin oversheath 4, and the thickness of oversheath 4 is 1.3mm; When extruding described halogen-free polyolefin oversheath, the temperature in each district of plastic extruding machine is: 1 district: 100 ℃; 2 districts: 130 ℃; 3 districts: 140 ℃; 4 districts: 150 ℃; 5 districts: 150 ℃; 6 districts: 155 ℃; Head: 150 ℃, the temperature deviation in each district is ± 10 ℃; The linear velocity that goes out that oversheath is extruded is 16m/min.
Embodiment two
(1) tinned copper wire that is 0.28mm with 49 diameters is twisted into power cable conductor 1a, and stranded lay ratio is 12 times; Adopt the fire-retardant Halogen material of low-density of high insulation resistance to extrude power cable insulation layer 1b formation power cable 1 then outside power cable conductor 1a, extruding thickness is 0.8mm;
(2) tinned copper wire that is 0.24mm with seven diameters is twisted into twisted pair wire conductor 2a, and stranded lay ratio is 12 times; Periphery at twisted pair wire conductor 2a adopts the fire-retardant Halogen material of low-density of high insulation resistance to extrude twisted pair wire insulating barrier 2b, and extruding thickness is 0.35mm, and the insulation external diameter is 1.3mm; Thoroughly doing away with the edge heart yearns with two, to be twisted into twisted pair wire right, and stranded lay ratio is 12 times;
The tinned copper wire that is 0.24mm with seven diameters is twisted into drainage thread 2c, and stranded lay ratio is 12 times;
One group of twisted pair wire to the wrapped aluminium foil polyester of the periphery of drainage thread 2c composite band 2d, the wrapped number of plies is two-layer, every layer the rate of putting up is 35%, and the aluminium lamination of aluminium foil polyester composite band 2d is inside, and drainage thread 2c is electric with the aluminium lamination of aluminium foil polyester composite band 2d and contacts; Then behind the wrapped mylar tape 2e of periphery of aluminium foil polyester composite band 2d, constitute the pair twist heart yearn;
Four pair twist heart yearns are twisted into the network cable cable core, and stranded lay ratio is 16 times, and four pair of twisted cores cablings of order lay ratio is different; Then at the periphery of the network cable cable core wrapped formation network cable of aluminium foil polyester composite band 2d aluminium foil layer 2f, then adopting diameter in the periphery of network cable aluminium foil layer 2f is that the tinned copper wire woven network cable braid 2g of 0.18mm constitutes a branch of network cable 2, and percentage of braiding coverage is 98%;
(3) with the closely continuous periphery that is arranged in a branch of network cable 2 of three power cables 1; Fill out core 3 by what gap size filled successively that diameter differs in the slit between power cable and network cable 2, constitute the cable core of whole periphery rounding;
(4) periphery at cable core extrudes halogen-free polyolefin oversheath 4, and the thickness of oversheath 4 is 1.5mm; When extruding described halogen-free polyolefin oversheath, the temperature in each district of plastic extruding machine is: 1 district: 100 ℃; 2 districts: 130 ℃; 3 districts: 140 ℃; 4 districts: 150 ℃; 5 districts: 150 ℃; 6 districts: 155 ℃; Head: 150 ℃, the temperature deviation in each district is ± 10 ℃; The linear velocity that goes out that oversheath is extruded is 18m/mi n.
Embodiment three
(1) be that the zinc-plated throwing of 0.26mm is twisted into power cable conductor 1a with 49 diameters, stranded lay ratio is 10 times; Adopt the fire-retardant Halogen material of low-density of high insulation resistance to extrude power cable insulation layer 1b formation power cable 1 then outside power cable conductor 1a, extruding thickness is 0.7mm;
(2) tinned copper wire that is 0.22mm with seven diameters is twisted into twisted pair wire conductor 2a, and stranded lay ratio is 10 times; Periphery at twisted pair wire conductor 2a adopts the fire-retardant Halogen material of low-density of high insulation resistance to extrude twisted pair wire insulating barrier 2b, and extruding thickness is 0.32mm, and the insulation external diameter is 1.2mm; Thoroughly doing away with the edge heart yearns with two, to be twisted into twisted pair wire right, and stranded lay ratio is 11 times;
The tinned copper wire that is 0.22mm with seven diameters is twisted into drainage thread 2c, and stranded lay ratio is 10 times;
One group of twisted pair wire to the wrapped aluminium foil polyester of the periphery of drainage thread 2c composite band 2d, the wrapped number of plies is two-layer, every layer the rate of putting up is 32%, and the aluminium lamination of aluminium foil polyester composite band 2d is inside, and drainage thread 2c is electric with the aluminium lamination of aluminium foil polyester composite band 2d and contacts; Then behind the wrapped mylar tape 2e of periphery of aluminium foil polyester composite band 2d, constitute the pair twist heart yearn;
Four pair twist heart yearns are twisted into the network cable cable core, and stranded lay ratio is 14 times, and four pair of twisted cores cabling lay ratios are different; Then at the periphery of the network cable cable core wrapped formation network cable of aluminium foil polyester composite band 2d aluminium foil layer 2f, then adopting diameter in the periphery of network cable aluminium foil layer 2f is that the tinned copper wire woven network cable braid 2g of 0.15mm constitutes a branch of network cable 2, and percentage of braiding coverage is 96%;
(3) with the closely continuous periphery that is arranged in a branch of network cable 2 of three power cables 1; Fill out core 3 by what gap size filled successively that diameter differs in the slit between power cable and network cable 2, constitute the cable core of whole periphery rounding;
(4) periphery at cable core extrudes halogen-free polyolefin oversheath 4, and the thickness of oversheath 4 is 1.4mm; When extruding described halogen-free polyolefin oversheath, the temperature in each district of plastic extruding machine is: 1 district: 100 ℃; 2 districts: 130 ℃; 3 districts: 140 ℃; 4 districts: 150 ℃; 5 districts: 150 ℃; 6 districts: 155 ℃; Head: 150 ℃, the temperature deviation in each district is ± 10 ℃; The linear velocity that goes out that oversheath is extruded is 17m/min.
Transmission performance result of the test to pair twist heart yearn among the embodiment one is as follows:
(connecting table)
The right working voltage of twisted pair wire is 100V, and is as shown in table 2 to the The performance test results that twisted pair wire among the embodiment one to embodiment three is right:
Table 2
| Unit | Embodiment one | Embodiment two | Embodiment three | |
| Loop resistance | Ω/km | 152 | 140 | 143 |
| Insulation resistance | GΩ/km | 5.3 | 5.8 | 5.6 |
| Propagation delay time | ns/m | 5.1 | 4.8 | 4.9 |
| Electric capacity (1kHz) | nf/km | 56 | 62 | 58 |
| Test voltage (50Hz) | 1000V/1min | Do not puncture | Do not puncture | Do not puncture |
The working voltage of power cable is 220V, and is as shown in table 2 to the The performance test results of power cable among the embodiment one to embodiment three:
Table 2
| Unit | Embodiment one | Embodiment two | Embodiment three | |
| Conductor resistance | Ω/km | 8.18 | 7.86 | 8.05 |
| Insulation resistance | M?Ω/km | 21.8 | 23.2 | 22.4 |
| Test voltage (50Hz) | 1000V/1min | Do not puncture | Do not puncture | Do not puncture |
In addition to the implementation, the present invention can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of requirement of the present invention.
Claims (7)
1. boats and ships and ocean engineering are with digital closed-circuit television cable, it is characterized in that: the Halogen non-hygroscopic that cable core is differed by three power cables, a branch of network cable and many diameter fills out that core is stranded to form, and three power cables closely link to each other and are arranged in the peripheries of described network cable; The described core of filling out is filled in the slit between described power cable and the described network cable successively by diameter, makes described cable core rounding; The periphery of described cable core is extruded with the halogen-free polyolefin oversheath, and the thickness of described oversheath is 1.3～1.5mm;
Every described power cable is by the power cable conductor that is positioned at the center and be coated on the outer power cable insulation layer of described power cable conductor and form;
Described network cable comprises that stranded lay ratio is 12～16 times by four stranded network cable cable cores that form of pair twist heart yearn, and four described pair of twisted cores cabling lay ratios are different; The periphery of described network cable cable core is coated with the network cable aluminium foil layer, and the periphery of described network cable aluminium foil layer is coated with the network cable braid;
The center of every described pair twist heart yearn comprise one group of twisted pair wire to a copper conductor drainage thread, described twisted pair wire is to heart yearns stranded the forming mutually of being insulated by two sub-threads, described sub-thread insulation heart yearn comprises the twisted pair wire conductor that is positioned at the center and is coated on the outer twisted pair wire insulating barrier of described twisted pair wire conductor, described twisted pair wire is to being surrounded with aluminium foil polyester composite band outward with drainage thread, the aluminium lamination of described aluminium foil polyester composite band is inside, and described drainage thread is electric with the aluminium lamination of described aluminium foil polyester composite band and contacts.
2. boats and ships according to claim 1 and ocean engineering is characterized in that with digital closed-circuit television cable, stranded the forming of tinned copper wire that described power cable conductor is 0.25mm～0.28mm by 49 diameters, and stranded lay ratio is 9～12 times; Described power cable insulation layer adopts the fire-retardant Halogen material of the low-density of high insulation resistance, and thickness is 0.6mm～0.8mm.
3. boats and ships according to claim 1 and ocean engineering is characterized in that with digital closed-circuit television cable, stranded the forming of tinned copper wire that described twisted pair wire conductor is 0.20mm～0.24mm by seven diameters, and the stranded lay ratio of described twisted pair wire conductor is 8～12 times; The fire-retardant Halogen material of the low-density that described twisted pair wire insulating barrier adopts high insulation resistance, thickness is 0.30mm～0.35mm, the insulation external diameter is 1.1mm～1.3mm; The right stranded lay ratio of described twisted pair wire is 9～12 times.
4. boats and ships according to claim 3 and ocean engineering is characterized in that with digital closed-circuit television cable, stranded the forming of tinned copper wire that drainage thread is 0.20mm～0.24mm by seven diameters, and stranded lay ratio is 8～12 times; The wrapped number of plies of described aluminium foil polyester composite band is two-layer, and every layer the rate of putting up is 30%～35%; The periphery of described aluminium foil polyester composite band is surrounded with mylar tape.
5. it is characterized in that with digital closed-circuit television cable according to each described boats and ships and ocean engineering in the claim 1 to 4 that described network cable aluminium foil layer is by wrapped the forming of aluminium foil polyester composite band, the rate of putting up is not less than 20%; Described network cable braid is that the tinned copper wire braiding of 0.15mm～0.18mm forms by diameter, and percentage of braiding coverage is 95%～98%.
6. boats and ships and ocean engineering is characterized in that with the manufacture method of digital closed-circuit television cable, comprise the steps:
(1) tinned copper wire that is 0.25mm～0.28mm with 49 diameters is twisted into power cable conductor, and stranded lay ratio is 9～12 times; Adopt the fire-retardant Halogen material of low-density of high insulation resistance to extrude power cable insulation layer then outside described power cable conductor, extruding thickness is 0.6mm～0.8mm;
(2) tinned copper wire that is 0.20mm～0.24mm with seven diameters is twisted into the twisted pair wire conductor, and stranded lay ratio is 8～12 times; Periphery at described twisted pair wire conductor adopts the fire-retardant Halogen material of low-density of high insulation resistance to extrude the twisted pair wire insulating barrier, and extruding thickness is 0.30mm～0.35mm, and the insulation external diameter is 1.1mm～1.3mm; Thoroughly doing away with the edge heart yearns with two, to be twisted into twisted pair wire right, and stranded lay ratio is 9～12 times;
The tinned copper wire that is 0.20mm～0.24mm with seven diameters is twisted into drainage thread, and stranded lay ratio is 8～12 times;
One group of described twisted pair wire to the wrapped aluminium foil polyester of the periphery of described drainage thread composite band, the wrapped number of plies is two-layer, every layer the rate of putting up is 30%～35%, and the aluminium lamination of described aluminium foil polyester composite band is inside, and described drainage thread is electric with the aluminium lamination of described aluminium foil polyester composite band and contacts; Then behind the wrapped mylar tape of periphery of aluminium foil polyester composite band, constitute the pair twist heart yearn;
Four described pair twist heart yearns are twisted into the network cable cable core, and stranded lay ratio is 12～16 times, and four described pair of twisted cores cabling lay ratios are different; Then at the periphery of the described network cable cable core wrapped formation network cable of aluminium foil polyester composite band aluminium foil layer, then adopting diameter in the periphery of described network cable aluminium foil layer is that the tinned copper wire woven network cable braid of 0.15mm～0.18mm constitutes a branch of network cable, and percentage of braiding coverage is 95%～98%;
(3) with the closely continuous periphery that is arranged in a branch of described network cable of three described power cables; Fill the core of filling out that diameter differs successively by gap size in the slit between described power cable and described network cable, constitute the cable core of whole periphery rounding;
(4) periphery at described cable core extrudes the halogen-free polyolefin oversheath, and the thickness of described oversheath is 1.3～1.5mm.
7. boats and ships according to claim 6 and ocean engineering is characterized in that with the manufacture method of digital closed-circuit television cable, and when extruding described halogen-free polyolefin oversheath, the temperature in each district of plastic extruding machine is: 1 district: 100 ℃; 2 districts: 130 ℃; 3 districts: 140 ℃; 4 districts: 150 ℃; 5 districts: 150 ℃; 6 districts: 155 ℃; Head: 150 ℃, the temperature deviation in each district is ± 10 ℃; The linear velocity that goes out that oversheath is extruded is 16～18m/min.
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| CN 201010606710 CN102103898B (en) | 2010-12-24 | 2010-12-24 | Digital closed circuit TV (television) cable for marine engineering and manufacturing method thereof |
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| CN 201010606710 CN102103898B (en) | 2010-12-24 | 2010-12-24 | Digital closed circuit TV (television) cable for marine engineering and manufacturing method thereof |
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| CN109830335A (en) * | 2019-03-29 | 2019-05-31 | 安徽徽宁电器仪表集团有限公司 | A kind of tensile type shielded cable |
| CN109830336A (en) * | 2019-03-29 | 2019-05-31 | 安徽徽宁电器仪表集团有限公司 | A kind of waterproof fireproofing control cable |
| CN111613378A (en) * | 2020-06-04 | 2020-09-01 | 深圳市红旗电工科技有限公司 | Be used for unmanned equipment sensing signal connection control combination cable of artificial intelligence |
| CN114156013A (en) * | 2021-12-03 | 2022-03-08 | 安徽蒙特尔电缆集团有限公司 | Production process of cable for new energy electric vehicle charging system |
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| CN102347103A (en) * | 2011-06-28 | 2012-02-08 | 江苏远洋东泽电缆股份有限公司 | Hard EPR (ethylene propylene rubber) insulated instrument cable for ships and oceans and manufacturing method thereof |
| CN103165229A (en) * | 2012-04-12 | 2013-06-19 | 江苏亨通线缆科技有限公司 | Data cable with interference shielding function |
| CN103165229B (en) * | 2012-04-12 | 2015-08-05 | 江苏亨通线缆科技有限公司 | There is the data cable of shielding interference function |
| CN105957586A (en) * | 2016-06-29 | 2016-09-21 | 苏州科宝光电科技有限公司 | Cable for radio frequency therapy apparatus |
| CN105957586B (en) * | 2016-06-29 | 2017-05-10 | 苏州科宝光电科技有限公司 | Cable for radio frequency therapy apparatus |
| CN106710706A (en) * | 2016-12-15 | 2017-05-24 | 江苏戴普科技有限公司 | Waterproof high-antioxidant network power supply integration wire |
| CN109767869A (en) * | 2019-03-29 | 2019-05-17 | 安徽徽宁电器仪表集团有限公司 | Shielded cable is used in a kind of control of waterproof machine |
| CN109830335A (en) * | 2019-03-29 | 2019-05-31 | 安徽徽宁电器仪表集团有限公司 | A kind of tensile type shielded cable |
| CN109830336A (en) * | 2019-03-29 | 2019-05-31 | 安徽徽宁电器仪表集团有限公司 | A kind of waterproof fireproofing control cable |
| CN111613378A (en) * | 2020-06-04 | 2020-09-01 | 深圳市红旗电工科技有限公司 | Be used for unmanned equipment sensing signal connection control combination cable of artificial intelligence |
| CN114156013A (en) * | 2021-12-03 | 2022-03-08 | 安徽蒙特尔电缆集团有限公司 | Production process of cable for new energy electric vehicle charging system |
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