CN202855384U - Intrinsic-safe instrument cable for oceaneering - Google Patents

Intrinsic-safe instrument cable for oceaneering Download PDF

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Publication number
CN202855384U
CN202855384U CN 201220594974 CN201220594974U CN202855384U CN 202855384 U CN202855384 U CN 202855384U CN 201220594974 CN201220594974 CN 201220594974 CN 201220594974 U CN201220594974 U CN 201220594974U CN 202855384 U CN202855384 U CN 202855384U
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China
Prior art keywords
unit
cable
layer
intrinsically
safe instrument
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Active
Application number
CN 201220594974
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Chinese (zh)
Inventor
程大伟
张春丽
吴义华
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Anhui Huiyi Cable Group Co Ltd
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Anhui Huiyi Cable Group Co Ltd
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Priority to CN 201220594974 priority Critical patent/CN202855384U/en
Application granted granted Critical
Publication of CN202855384U publication Critical patent/CN202855384U/en
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Abstract

The utility model discloses an intrinsic-safe instrument cable for oceaneering. An insulating layer is extruded from a conductor to form an insulating conductor core, two insulating conductor cores are paired to form a paired unit, and a unit shielding layer, a unit current lead and a unit shield isolating layer are successively arranged outside the surface of the paired unit from inside to outside to form a unit group; multiple unit groups are intertwisted to form a cable core, and an inner belting layer, a total shielding layer, an armor layer and an oversheath layer are successively arranged outside the external surface of the cable core from inside to outside; and a total shielding current lead is arranged between the inner belting layer and the total shielding layer. The intrinsic-safe instrument cable has the advantages including flame retardation, low smoke, free of halogen, low capacitance, low inductance, high insulating performance, high anti-electromagnetic interference and high security, which can be used as connecting lines for electrical instruments in oceaneering.

Description

Ocean engineering intrinsically-safe instrument cable
Technical field
The utility model relates to a kind of instrument cable, relates in particular to a kind of ocean engineering intrinsically-safe instrument cable, belongs to technical field of electric wires and cables.
Background technology
Be accompanied by the global energy exploitation to the transfer of ocean, the marine oil and gas engineering is in the ascendant.Owing to be full of inflammable and explosive greasy dirt and gas in the marine oil and gas engineering, for guaranteeing the fail safe of electric signal transmission in the equipment, need special intrinsically-safe instrument cable supporting with it.
The environment of ocean engineering has determined that it has the requirement of particularity, the one, and the geographical environment temperature difference is often larger, and the General Requirements cable can have under-35~+ 80 ℃ condition and works, and insulation and sheath electrical property and mechanical performance keep stablizing; The 2nd, cable has fire resistance, in most cases needs by category-A bunchy fire retardancy test; The 3rd, because the erecting bed environment is narrow and small, need the bending radius of cable less, be not more than six times of the outside diameter of cable; The 4th, the electric property aspect mainly needs cable to satisfy the shielding properties of the anti-electromagnetic interference of low electric capacity, low inductance and excellence, and cable is difficult for producing electric spark in running like this.In addition, some cable requires to have oil resistant and anti-mud property according to environment for use.And existing instrument cable is difficult to satisfy specification requirement.
Summary of the invention
The utility model is for avoiding the existing weak point of above-mentioned prior art, and a kind of ocean engineering intrinsically-safe instrument cable with fire-retardant, low smoke and zero halogen, low-loss, low electric capacity, low inductance, high insulating property, high resistance electromagnetic interference and high safety performance is provided.
The utility model technical solution problem adopts following technical scheme:
The utility model ocean engineering with the design feature of intrinsically-safe instrument cable is: the extruded insulation layer consists of insulated wire cores on conductor, consist of the pair twist unit by the insulated wire cores pair twist, surface in described pair twist unit sets gradually the unit screen from inside to outside, unit drainage thread and unit shielding separator Component units group; Consist of cable core by a plurality of unit group twisted synthesizing cable, set gradually from inside to outside interior belting layer, total screen, armour and external sheath layer in described cable core appearance; In between described interior belting layer and total screen total shielding drainage thread is set.
The utility model ocean engineering also is with the design feature of intrinsically-safe instrument cable:
Described conductor is to be made of single or many stranded tin annealed copper wires.
Described insulating barrier is to extrude with the crosslinked low-smoke non-halogen flame-retardant ethylene-propylene rubber material of overheated saturated steam to form.
Described unit screen and total screen are that the wrapped or vertical bag of aluminium-plastic tape or compound copper-plastics band forms.
Described armour adopts the tinned copper wire braiding structure, and count is not less than 85%.
Described external sheath layer extrudes with the low-smoke non-halogen flame-retardant oil-resisting type ethylene-propylene rubber of cross-linking radiation and forms.
Compared with the prior art, the utility model beneficial effect is embodied in:
The utility model is rational in infrastructure, and is easy to manufacture, only needs conventional universal cordage production equipment, and cable electrical performance, mechanical and physical performance are good, can satisfy running environment in the marine engineering equipment and the specification requirement of control.The amount of being fuming is low during burning, does not produce halogen acid gas, and cable has not flame-retarding power energy, can satisfy the modern high performance instrument and meter with the requirement of communication, control connection line.
Description of drawings
Fig. 1 is the utility model ocean engineering intrinsically-safe instrument construction of cable schematic diagram;
Number in the figure: 1 conductor, 2 insulating barriers, 3 unit drainage threads, 4 unit screens, 5 cell isolation layers, 6 cable cores, 7 interior belting layers, 8 total shielding drainage threads, 9 total screens, 10 armours, 11 external sheath layers.
Embodiment
Referring to Fig. 1, the present embodiment ocean engineering with the version of intrinsically-safe instrument cable is: extruded insulation layer 2 consists of insulated wire cores on conductor 1, consist of the pair twist unit by the insulated wire cores pair twist, surface in the pair twist unit sets gradually unit screen 4 from inside to outside, unit drainage thread 3 and unit shielding separator 5 Component units groups; Adopt the pair twist structure and suitably reduce twisting pitch, can effectively reduce cross-talk to the impact of cable transmission signal, guaranteed the stability of cable signal transmission, the line that has reduced simultaneously cable to electromagnetic coupled, realize the transmission performances such as cable high transfer rate, low transmission impedance, low decay, can realize the highest 1MHz transmission frequency; The line that shielding effectively reduced cable is set in the unit group to be done anti-to an electromagnetism.
Shown in Figure 1, consist of cable core 6 by a plurality of unit group twisted synthesizing cable in the present embodiment, set gradually from inside to outside interior belting layer 7, total screen 9, armour 10 and external sheath layer 11 in cable core 6 appearances; In between interior belting layer 7 and total screen 9 total shielding drainage thread 8 is set; Can effectively reduce cable for total shielding of cable core produces electromagnetic interference or surrounding environment to surrounding environment and cable is produced disturbs.
In the implementation, conductor 1 is to be made of single or many stranded tin annealed copper wires; Its performance meets the requirement of GB/T3956 the 1st or the 2nd kind of zinc-plated flexible conductor, and specification is 0.5 mm 2, 0.75 mm 2, 1.0 mm 2, 1.5 mm 2Or 2.5 mm 2
Insulating barrier 2 is to extrude with the crosslinked low-smoke non-halogen flame-retardant ethylene-propylene rubber material of overheated saturated steam to form; This material is easy to get, and makes cable have good softness and electric property;
Unit screen 4 and total screen 9 form for aluminium-plastic tape or the wrapped or vertical bag of compound copper-plastics band;
Armour 10 adopts the tinned copper wire braiding structure, and count is not less than 85%, and armour 10 can play the effect of load-bearing cable weight when cable suspension on the one hand, can play on the other hand the effect of anti-magnetic disturbance;
External sheath layer 11 extrudes with the low-smoke non-halogen flame-retardant oil-resisting type ethylene-propylene rubber of cross-linking radiation and forms, and environmental protection, safety, recyclable reusing, can adapt to the adverse circumstances such as high salinity, difference variation be large at humidity.

Claims (6)

1. ocean engineering intrinsically-safe instrument cable, it is characterized in that consisting of insulated wire cores at the upper extruded insulation layer (2) of conductor (1), consist of the pair twist unit by the insulated wire cores pair twist, set gradually from inside to outside unit screen (4) on the surface of described pair twist unit, unit drainage thread (3) and unit shielding separator (5) Component units group; Consist of cable core (6) by a plurality of unit group twisted synthesizing cable, set gradually from inside to outside interior belting layer (7), total screen (9), armour (10) and external sheath layer (11) in described cable core (6) appearance; In between described interior belting layer (7) and total screen (9) total shielding drainage thread (8) is set.
2. ocean engineering according to claim 1 intrinsically-safe instrument cable is characterized in that described conductor (1) is to be made of single or many stranded tin annealed copper wires.
3. ocean engineering according to claim 1 intrinsically-safe instrument cable is characterized in that described insulating barrier (2) is to extrude with the crosslinked low-smoke non-halogen flame-retardant ethylene-propylene rubber material of overheated saturated steam to form.
4. ocean engineering according to claim 1 intrinsically-safe instrument cable is characterized in that described unit screen (4) and total screen (9) form for aluminium-plastic tape or the wrapped or vertical bag of compound copper-plastics band.
5. ocean engineering according to claim 1 intrinsically-safe instrument cable is characterized in that described armour (10) adopts the tinned copper wire braiding structure, and count is not less than 85%.
6. ocean engineering according to claim 1 intrinsically-safe instrument cable is characterized in that described external sheath layer (11) extrudes with the low-smoke non-halogen flame-retardant oil-resisting type ethylene-propylene rubber of cross-linking radiation to form.
CN 201220594974 2012-11-13 2012-11-13 Intrinsic-safe instrument cable for oceaneering Active CN202855384U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220594974 CN202855384U (en) 2012-11-13 2012-11-13 Intrinsic-safe instrument cable for oceaneering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220594974 CN202855384U (en) 2012-11-13 2012-11-13 Intrinsic-safe instrument cable for oceaneering

Publications (1)

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CN202855384U true CN202855384U (en) 2013-04-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103594177A (en) * 2013-11-08 2014-02-19 江苏远洋东泽电缆股份有限公司 Hydrocarbon substance aging resisting instrument cable for petrochemical plant and manufacturing method thereof
CN103915157A (en) * 2014-03-04 2014-07-09 安徽华泰电缆科技有限公司 Armor insulation cable with drainage wires
CN105206325A (en) * 2015-10-12 2015-12-30 安徽华津电缆集团有限公司 Heat-resisting light intrinsic safety computer flexible cable and manufacturing technology thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103594177A (en) * 2013-11-08 2014-02-19 江苏远洋东泽电缆股份有限公司 Hydrocarbon substance aging resisting instrument cable for petrochemical plant and manufacturing method thereof
CN103594177B (en) * 2013-11-08 2016-02-03 江苏远洋东泽电缆股份有限公司 The petrochemical equipment aging instrument cable of resistance to hydrocarbons and manufacture method thereof
CN103915157A (en) * 2014-03-04 2014-07-09 安徽华泰电缆科技有限公司 Armor insulation cable with drainage wires
CN105206325A (en) * 2015-10-12 2015-12-30 安徽华津电缆集团有限公司 Heat-resisting light intrinsic safety computer flexible cable and manufacturing technology thereof

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