CN202178087U

CN202178087U - Anti-static oil-resistant instrument cable

Info

Publication number: CN202178087U
Application number: CN2011203133971U
Authority: CN
Inventors: 王辅斌
Original assignee: ANHUI HANGTIAN CABLE GROUP Co Ltd
Current assignee: ANHUI HANGTIAN CABLE GROUP Co Ltd
Priority date: 2011-08-25
Filing date: 2011-08-25
Publication date: 2012-03-28
Anticipated expiration: 2021-08-25

Abstract

The utility model claims an anti-static oil-resistant instrument cable. An insulated wire core is formed by an extruded insulating layer on a tin-coated copper conductor; a unit group is composed of the insulating wire core; a plurality of unit groups constitute a cable core; an inner belting layer, a general shielding layer, an isolating layer, an armoring layer and a protective sleeve layer are arranged on the cable core outer layer from inner to outer side in turn. The anti-static oil-resistant instrument cable is characterized in that the insulating layer is made from ETFE material; each unit group is provided with a unit drainage wire and a unit shielding layer; a general shielding drainage wire is arranged between the inner belting layer and the general shielding layer of the cable core; and the separating layer and the outer protective layer are made from thermoplastic vulcanizate and polyurethane elastomer respectively. The anti-static oil-resistant instrument cable is featured with high transmission stability, high anti-electromagnetic interference, flexibility, oil resistance, anti-static performance, high intensity and fire retardance.

Description

Anti-static oil-resistance type instrument cable

Technical field

The utility model relates to a kind of novel instrument cable, relates in particular to a kind of anti-static oil-resistance type instrument cable, belongs to technical field of electric wires and cables.

Background technology

Petroleum chemical industry, because its environmental condition is harsh, reliable and secure property is strict, the cable that this type of field is used has proposed higher specification requirement.

Anti-static oil-resistance type instrument is used cable; Mainly be applicable in oil tank, oil well and the large-scale oil vessel environment to naked light safety requirements extra-high-speed and use, directly contact for a long time or be immersed in the oil and be connected transmission of control signals and measuring-signal with sensing as electric meter.Because such cable needs characteristics such as flexibility, cold resistance, resistance to wear, high strength preferably, cable is in use reeled repeatedly and is launched, and does not influence the electrical property of cable.In order to guarantee that cable has desirable electric property, mechanical and physical performance, is suitable for the characteristic of specific (special) requirements, need carry out necessary optimization to material, structural design that cable is used, could satisfy the requirement in its field.But do not aim at the instrument cable that adapts to this requirement in the prior art.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point; A kind of have high-transmission stability, high anti-electromagnetic interference performance, the anti-static oil-resistance type instrument cable that has performances such as flexibility, oil resistance, antistatic, high strength, fire-retardant fireproof simultaneously are provided.

The utility model technical solution problem adopts following technical scheme:

The utility model anti-static oil-resistance type instrument cable is that the extruded insulation layer constitutes insulated wire cores on the tin-coated copper conductor; Constitute the unit group by said insulated wire cores; Constitute cable core by a plurality of said unit group, the cable core skin sets gradually interior belting layer, total screen, separator, armour and external sheath layer from inside to outside; Its design feature is that the insulating barrier that on said conductor, extrudes is to be material with ETFE; Said unit group is by the stranded pair twist group that forms of insulated wire cores, three core groups or four-core group, is respectively equipped with unit drainage thread and unit screen on each unit group; In said, total shielding drainage thread is set between belting layer and the total screen; Said external sheath layer is to be material with polyurethane TPU elastomer.

Respectively organize the unit group in the said cable core and adopt different pitches, pitch range is between the 100-120mm;

Said conductor adopts tin annealed copper wire;

Said separator is that TPV thermoplastic rubber material extrudes and forms;

Said armour adopts zinc-coated wire to dredge around structure.

Compared with present technology, the utility model beneficial effect is embodied in:

1, the insulating barrier in the utility model has adopted ETFE (F40) material, and intensity and specific insulation are higher, good insulation preformance, cold resistance are good, advantage such as density is little, in light weight;

2, the transmission unit in the utility model has adopted pair twist group, three core groups or four-core group enough to become, and can realize the highest 1MHz (analog signal), 2Mbit/s (digital signal) transmitting pin; Each unit group twisting pitch is different; Reduced the influence of cross-talk to the cable transmission signal; Guaranteed the stability of cable signal transmission, the line that has reduced cable simultaneously to electromagnetic coupled, realize transmission performances such as cable high transfer rate, low transmission impedance, low decay;

3, the utility model conductor adopts tin annealed copper wire, prevents that bare copper wire is prone to oxidation and makes resistance increase the causing loose contact of cable joint place play electric spark or heating breaking out of fire;

4, the armour in the utility model adopts zinc-coated wire to dredge around structural design, can play the effect that cable suspension is carried cable weight on the one hand, also plays the effect of anti-magnetic disturbance on the other hand, and simultaneously easy to process, production efficiency is high;

5, the separator in the utility model is that TPV thermoplastic rubber material extrudes and forms, the said material good springiness, and flexibility is good, can finely play the effect of buffering extraneous pressure.

6, the external sheath layer in the utility model is a material with polyurethane TPU elastomer; Not only have antistatic, oil resistant characteristic; Also have environmental protection, safety, recyclable repeated use, special adverse circumstances such as also having humidity simultaneously, can adapt to high salinity, difference variation is big.

Description of drawings

Fig. 1 is the construction of cable sketch map that transmission unit adopts the twisted pair wire group in the utility model;

Label among Fig. 1: 1 conductor, 2 insulating barriers, 3a pair twist group, 4 polyester belts, 5 unit drainage threads; 6 unit screens, 7a unit pair twist group, 8 cable cores, 9 interior belting layers, 10 total shielding drainage threads; 11 total screens, 12 separators, 13 armours, 14 outer belting layers, 15 external sheath layers.

Fig. 2 adopts the construction of cable sketch map of three heart yearn groups for transmission unit in the utility model;

Label among Fig. 2: 1 conductor, 2 insulating barriers, 3b three core groups, 4 polyester belts, 5 unit drainage threads; 6 unit screens, 7b unit three core groups, 8 cable cores, 9 interior belting layers, 10 total shielding drainage threads; 11 total screens, 12 separators, 13 armours, 14 outer belting layers, 15 external sheath layers.

Fig. 3 is the construction of cable sketch map that transmission unit adopts four-core star quad stranding group in the utility model;

Label among Fig. 3: 1 conductor, 2 insulating barriers, 3c four-core group, 4 polyester belts, 5 unit drainage threads; 6 unit screens, 7c unit four-core group, 8 cable cores, 9 interior belting layers, 10 total shielding drainage threads; 11 total screens, 12 separators, 13 armours, 14 outer belting layers, 15 external sheath layers.

Embodiment

Referring to Fig. 1, Fig. 2 and Fig. 3; Present embodiment is that extruded insulation layer 2 constitutes insulated wire cores on conductor 1; Constitute the unit group by insulated wire cores; Constitute cable core by a plurality of unit group, the cable core skin sets gradually interior belting layer 9, total screen 11, separator 12, armour 13 and external sheath layer 15 from inside to outside.

In the practical implementation, the insulating barrier 2 that on conductor 1, extrudes is to be material with F40 (ETFE) material; The unit group is to form pair twist group shown in Figure 1 by insulated wire cores is stranded, or is three core groups as shown in Figure 2, or is four-core group as shown in Figure 3, is respectively equipped with unit drainage thread 5 and unit screen 6 on each unit group; At the interior belting layer 9 of cable core and in always between the screen 11 total shielding drainage thread 10 is set; External sheath layer 15 is to be material with polyurethane TPU elastomer.

In the practical implementation, respectively organize the unit group in the cable core and adopt different pitches.

Conductor 1 needs to adopt tin annealed copper wire, and its performance of specific requirement meets the requirement of GB/T3956-1997 the 1st or the 2nd kind of zinc-plated flexible conductor, and specification is 0.5mm ², 0.75mm ², 1.0mm ², 1.5mm ²And 2.5mm ²

Armour is dredged around structure by zinc-coated wire.

Shown in Figure 1 is to be twisted into pair twist group 3a by two insulated cores; Many group pair twist group 3a are set to different pitches respectively in the cable core 8; Wrapped polyester belt 4 and placement unit drainage thread 5 on pair twist group 3a; The unit screen 6 that outer wrapped metal tape or braiding copper wire constitute constitutes unit pair twist group 7a with this; Each unit pair twist group 7a is arranged stranding in order constitute cable core 8, belting layer 9 in the outer surface of cable core 8 is wrapped, wrapped metal tape or the total screen 11 of braiding copper wire on interior belting layer 9 and total shielding drainage thread 10; Between total screen 11 and armour 13, can extrude and form separator 12, and outside armour 13 outer wrapped, extrude external sheath layer 15 behind the belting layer 14.

Shown in Figure 2 is to be twisted into three heart yearn 3b by three insulated cores; Many group three core group 3b are set to different pitches respectively in the cable core 8; Wrapped polyester belt 4 and placement unit drainage thread 5 on three core group 3b; The unit screen 6 that outer wrapped metal tape or braiding copper wire constitute constitutes unit three core group 7b with this, and other structure is identical with structure shown in Figure 1.

Shown in Figure 3 is to be twisted into four-core group 3 by four insulated cores; Many group four-core group 3c are set to different pitches respectively in the cable core 8; Wrapped polyester belt 4 and placement unit drainage thread 5 on four-core group 3c; The unit screen 6 that outer wrapped metal tape or braiding copper wire constitute constitutes unit four-core group 7c with this, and other structure is identical with structure shown in Figure 1.

Claims

1. anti-static oil-resistance type instrument cable; Be to go up extruded insulation layer (2) at tin-coated copper conductor (1) to constitute insulated wire cores; Constitute the unit group by said insulated wire cores; Constitute cable core (8) by a plurality of said unit group, cable core (8) skin sets gradually interior belting layer (9), total screen (11), separator (12), armour (13) and external sheath layer (15) from inside to outside; It is characterized in that the insulating barrier (2) that on said conductor (1), extrudes is to be material with ETFE; Said unit group is by the stranded pair twist group (3a) that forms of insulated wire cores, three core groups (3b) or four-core group (3c), is respectively equipped with unit drainage thread (5) and unit screen (6) on each unit group; In between belting layer in said (9) and the total screen (11) total shielding drainage thread (10) is set; Said external sheath layer (15) is to be material with polyurethane TPU elastomer.

2. anti-static oil-resistance type instrument cable according to claim 1 is characterized in that respectively organizing in the said cable core (8) the unit group and adopts different pitches, and pitch range is between the 100-120mm.

3. anti-static oil-resistance type instrument cable according to claim 1 is characterized in that said conductor (1) adopts tin annealed copper wire.

4. anti-static oil-resistance type instrument cable according to claim 1 is characterized in that said separator (12) forms for TPV thermoplastic rubber material extrudes.

5. anti-static oil-resistance type instrument cable according to claim 1 is characterized in that said armour (13) adopts zinc-coated wire to dredge around structure.