CN103886955A

CN103886955A - Flat sheathing and shielding cable for well drilling

Info

Publication number: CN103886955A
Application number: CN201410072872.9A
Authority: CN
Inventors: 夏振振
Original assignee: WUXI JINHUA CABLE MATERIAL Co Ltd
Current assignee: WUXI JINHUA CABLE MATERIAL Co Ltd
Priority date: 2014-03-03
Filing date: 2014-03-03
Publication date: 2014-06-25

Abstract

The invention discloses a flat sheathing and shielding cable for well drilling. The flat sheathing and shielding cable is composed of copper conductor cable cores, a wrapping tape layer, a polyvinyl chloride insulating layer, a nonmagnetic metal armor layer, a copper strip shielding layer, a polyester fiber layer and a chlorosulfonated polyolefin protective layer. The four copper conductor cable cores are twisted together, the wrapping tape layer is arranged outside the combination of the four copper conductor cable cores in an extruded mode, the polyvinyl chloride insulating layer is wrapped outside the wrapping tape layer, the nonmagnetic metal armor layer is wrapped outside the polyvinyl chloride insulating layer, the copper strip shielding layer is wrapped outside the nonmagnetic metal armor layer, and the polyester fiber layer is wrapped outside the copper strip shielding layer. The cable is light in weight, convenient to transport, good in shielding effect, low in laying temperature, high in cold tolerance and good in waterproofing effect; the allowable bending radius of the cable is eight times the outer diameter of the cable; the cable can bear a 3.5 Kv alternating voltage at the frequency of 50 HZ for 5 minutes without breakdown.

Description

The flat sheathed shielded cable of a kind of drilling well

Technical field

The present invention relates to field of cables, relate in particular to the flat sheathed shielded cable of a kind of drilling well.

Background technology

At present, be applied to the cable of drilling well, tunnel, submarine laying use, all very high to the each side quality requirement of cable, because very important of fail safe in these fields, generally not admit of potential safety hazard to exist, in these fields, just should use so that some are good in cold resistance, good water-proof effect, cable that resistance to pressure is strong, can better ensure and improve fail safe.

Summary of the invention

In order to overcome the defect of above-mentioned prior art, the object of this invention is to provide that a kind of cold resistance is good, the flat sheathed shielded cable of the drilling well of good water-proof effect.

The present invention takes following technical scheme to realize: the flat sheathed shielded cable of a kind of drilling well, it is made up of copper conductor core, belting layer, polyvinyl chloride insulation layer, nonmagnetic metal armour, copper strip shielding layer, layer of polyester fiber and chlorosulfonated polyolefin restrictive coating.Described copper conductor core has four groups, twist together and be extruded in belting layer inside, outside described belting layer, wrap up one deck polyvinyl chloride insulation layer, outside described polyvinyl chloride insulation layer, wrap up one deck nonmagnetic metal armour, outside described nonmagnetic metal armour, wrap up one deck copper strips screen, outside described copper strip shielding layer, wrap up one deck layer of polyester fiber.

The present invention has following beneficial effect in sum: this cable is light, convenient transportation, shield effectiveness is good, lays temperature low, cold resistance is strong, good water-proof effect, the permission bending radius of this cable is the outside diameter of cable 8 times; Can stand to exchange 50HZ, 3.5Kv/5min voltage and not breakdown.

Accompanying drawing explanation

Fig. 1 is cross-sectional structure schematic diagram of the present invention;

Wherein: 1, copper conductor core; 2, belting layer; 3, polyvinyl chloride insulation layer; 4, nonmagnetic metal armour; 5, copper strip shielding layer; 6, layer of polyester fiber; 7, chlorosulfonated polyolefin restrictive coating.

Embodiment

As shown in Figure 1, the flat sheathed shielded cable of a kind of drilling well, it is made up of copper conductor core 1, belting layer 2, polyvinyl chloride insulation layer 3, nonmagnetic metal armour 4, copper strip shielding layer 5, layer of polyester fiber 6 and chlorosulfonated polyolefin restrictive coating 7.Described copper conductor core 1 has four groups, twist together and be extruded in belting layer 2 inside, outside described belting layer 2, wrap up one deck polyvinyl chloride insulation layer 3, outside described polyvinyl chloride insulation layer 3, wrap up one deck nonmagnetic metal armour 4, outside described nonmagnetic metal armour 4, wrap up one deck copper strips screen 5, outside described copper strip shielding layer 5, wrap up one deck layer of polyester fiber 6.

The above is the embodiment of the present invention, and the equivalence of doing according to structure, feature and principle described in the present patent application scope therefore all changes or modifies, and is included in patent claim of the present invention.

Claims

1. the flat sheathed shielded cable of drilling well, it is by copper conductor core, belting layer, polyvinyl chloride insulation layer, nonmagnetic metal armour, copper strip shielding layer, layer of polyester fiber and chlorosulfonated polyolefin restrictive coating composition, it is characterized in that: described copper conductor core has four groups, twist together and be extruded in belting layer inside, outside described belting layer, wrap up one deck polyvinyl chloride insulation layer, outside described polyvinyl chloride insulation layer, wrap up one deck nonmagnetic metal armour, outside described nonmagnetic metal armour, wrap up one deck copper strips screen, outside described copper strip shielding layer, wrap up one deck layer of polyester fiber.