CN217239109U

CN217239109U - 7-core double-steel-wire armored high-temperature load-bearing detection cable

Info

Publication number: CN217239109U
Application number: CN202220809438.4U
Authority: CN
Inventors: 罗斌; 刘书鑫; 王礼国; 蔡长威; 李清华; 吴英俊
Original assignee: Zhejiang Products Zhongda Cable Co ltd
Current assignee: Zhejiang Products Zhongda Cable Co ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-08-19
Anticipated expiration: 2032-04-08

Abstract

The utility model discloses a 7 two steel wire armours of core high temperature bear lotus exploration cable, pack the core and twist jointly and constitute the cable core including seven insulation core and PPS conductive fiber, the outside cladding in proper order of cable core has ETFE resin around the covering, the crowded package inner sheath layer of EPT rubber, two steel wire armoured layer, nylon anticorrosive coating and tetrafluoroethylene propylene copolymerization fluororubber oversheath layer, two steel wire armoured layer are that inside and outside double-deck armoured steel wire composite wire is each other that reverse spiral winding braided structure and spiral angle are different, inside and outside double-deck armoured steel wire composite wire is a plurality of stainless steel wires and a plurality of nylon wire mix and constitutes, insulation core includes the inner conductor, polyimide winds the package isolation layer, FEP insulating layer and semiconduction nylon belt are around the covering. The cable is better in flexibility, bears higher mechanical load, is not easy to break a core and a wire, is stronger in tear resistance, ensures the safety and reliability of the cable, and prolongs the service life.

Description

7-core double-steel-wire armored high-temperature load-bearing detection cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a 7 two steel wire armours high temperature of core bear lotus exploration cable.

Background

The load-bearing detection cable is applied to the operations of well logging, perforation, coring and the like of various oil wells and gas wells, can also be used in the aspects of ocean investigation, river, estuary, water conservancy hydrological measurement, coal field geological survey, geothermal well logging and the like, can bear mechanical load and transmit electric signals, and is a scale for measuring well depth. The cable is used as a cable for electrical equipment, is used for logging, perforating, coring and other operations of various oil wells and gas wells, and mainly has the functions of bearing tension, supplying power to a system, transmitting signals, controlling depth and the like. The steel wire armor layer of the common load-bearing cable has enough mechanical strength, but has insufficient flexibility, poor bending resistance, easy occurrence of core breaking and wire breaking, tearing of the insulating layer and other phenomena, influences on the electrical characteristics of normal work, and has poor safety and reliability and short service life.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a 7 two steel wire armor high temperature of core hold lotus exploration cable, and the pliability is better, bears higher mechanical load, is difficult for appearing disconnected core broken string, and tear-resistant performance is stronger, guarantees cable fail safe nature, increase of service life.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

7 two steel wire armouring high temperature bearing load exploration cable of core, pack the core including seven insulation core and PPS conductive fiber and twist jointly and constitute the cable core, the outside cladding in proper order of cable core has ETFE resin around covering, ethylene propylene diene monomer crowded package inner sheath layer, two steel wire armoured layer, nylon anticorrosive coating and tetrafluoroethylene propylene copolymerization fluororubber oversheath layer, two steel wire armoured layer are that inside and outside double-deck armoured steel wire composite wire is each other for reverse spiral winding braided structure and spiral angle difference, inside and outside double-deck armoured steel wire composite wire is a plurality of stainless steel wires and a plurality of nylon wire mixture and constitutes, and nylon wire diameter is less than stainless steel wire diameter, and inner stainless steel wire diameter is less than outer stainless steel wire diameter, insulation core includes inner conductor, polyimide around package isolation layer, FEP insulating layer and semiconduction nylon belt around the covering.

Preferably, the PPS conductive fiber-filled core material is composed of a plurality of PPS conductive fiber bundles, and the PPS conductive fiber bundles are formed by twisting a plurality of PPS fibers and coating a copper conductive coating layer.

Preferably, the diameter of the stainless steel wire of the inner layer is 0.8mm to 1.2mm, and the diameter of the stainless steel wire of the outer layer is 1mm to 1.5 mm.

Preferably, the diameter of the nylon wire is not more than 70% of the diameter of the stainless steel wire.

Preferably, the inner conductor is formed by stranding a plurality of tinned copper monofilaments with the wire diameter of 0.15mm to 0.38 mm.

Preferably, the thickness of the polyimide lapping isolation layer is 35-50 μm.

Preferably, the FEP insulating layer has a thickness of not more than 0.5 mm.

Preferably, the ETFE resin lapping layer is an ETFE resin belt lapping and lapping structure, and the lapping rate is 15% to 20%.

Preferably, the outer surface of the ethylene propylene diene monomer rubber extruded inner sheath layer is provided with a thermoplastic polyurethane bonding layer.

Preferably, the inner surface of the nylon anticorrosive layer is provided with a thermoplastic EEA bonding layer.

The utility model has the advantages that:

1. the load bearing mechanical strength is ensured through the double-steel-wire armor layer, the inner and outer double-layer armor steel wire composite wires are of reverse spiral winding weaving structures and are different in spiral angle, meanwhile, the inner and outer double-layer armor steel wire composite wires are formed by mixing a plurality of stainless steel wires and a plurality of nylon wires, the proportional size relation of the wire diameter of the nylon wires, the wire diameter of the inner layer stainless steel wires and the wire diameter of the outer layer stainless steel wires is optimized, the nylon wires are beneficial to reducing local stress concentration of the armor layer, the torque force during bending is reduced, the flexibility and the tensile resistance of the armor layer are improved, the bending resistance is enhanced, when the cable bears mechanical load, core breaking and wire breakage and tearing of an insulating layer are prevented, the stability of the electrical property of the cable is improved, the safety and reliability of the long-term use of the cable are ensured, and the service life is prolonged.

2. The PPS conductive fibers are added to fill the core material, so that the balance of the stress of the cable core is facilitated, the mechanical strength and the tensile resistance are improved, the PPS fibers have good heat resistance, chemical corrosion resistance and high mechanical strength, the ETFE resin coated outside plays a role in reducing abrasion in a wrapping layer, the flexibility and the bending resistance of the cable core are improved, the local stress concentration of each wire core in the cable core is reduced, the occurrence of core breaking and wire breaking is prevented, and the long-term stable electrical characteristics are ensured.

3. Increase polyimide around the package isolation layer between inner conductor and FEP insulating layer, polyimide has high insulating properties around the package isolation layer, and the thermostability is excellent, helps improving the high temperature resistant grade of insulation core.

4. The tetrafluoroethylene-propylene copolymerized fluororubber outer sheath layer has better heat resistance, flexibility and breakage resistance, and ensures the high-temperature electrical characteristics of the cable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention.

Description of reference numerals: the cable comprises 1-an insulating wire core, 11-an inner conductor, 12-a polyimide lapping isolation layer, 13-an FEP insulating layer, 14-a semiconductive nylon tape lapping layer, a 2-PPS conductive fiber filling core material, a 3-ETFE resin lapping layer, a 4-ethylene propylene diene monomer rubber extrusion inner sheath layer, a 5-double-steel-wire armor layer, a 6-nylon anticorrosive layer and a 7-tetrafluoroethylene propylene copolymerized fluororubber outer sheath layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the utility model discloses 7 two steel wire armours of core high temperature bear load exploration cable, fill core 2 and twist jointly and constitute the cable core including seven insulation core 1 and PPS conductive fiber, specific theory, PPS conductive fiber fills core 2 and comprises a plurality of PPS conductive fiber bundles, PPS conductive fiber bundles is a plurality of PPS fiber transposition and coats copper conductive coating and form. Insulating sinle silk 1 includes inner conductor 11, polyimide around package isolation layer 12, FEP insulating layer 13 and semiconduction nylon belt around package 14, and specifically speaking, inner conductor 11 is that a plurality of diameters of wires are 0.15mm to 0.38mm tin-plated copper monofilament transposition formation. The thickness of the polyimide lapping isolation layer 12 is 35-50 μm. The thickness of the FEP insulating layer 13 is not more than 0.5 mm.

The cable core is coated with an ETFE resin wrapping layer 3, an ethylene propylene diene monomer rubber extruded inner sheath layer 4, a double-steel-wire armor layer 5, a nylon anticorrosive layer 6 and a tetrafluoroethylene propylene copolymerized fluororubber outer sheath layer 7 in sequence, the outer surface of the ethylene propylene diene monomer rubber extruded inner sheath layer 4 is provided with a thermoplastic polyurethane adhesive layer, and the inner surface of the nylon anticorrosive layer 6 is provided with a thermoplastic EEA adhesive layer. In one embodiment, the ETFE resin lapping layer 3 is an ETFE resin tape lapping structure and the lapping rate is 15% to 20%. The double-steel-wire armor layer 5 is formed by mixing a plurality of stainless steel wires and a plurality of nylon wires, wherein the diameter of the nylon wires is smaller than that of the stainless steel wires, the diameter of the stainless steel wires of the inner layer is smaller than that of the stainless steel wires of the outer layer, specifically, the diameter of the stainless steel wires of the inner layer is 0.8-1.2 mm, the diameter of the stainless steel wires of the outer layer is 1-1.5 mm, and further, the diameter of the nylon wires is not more than 70% of the diameter of the stainless steel wires.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1.7 two steel wire armours of core high temperature bear the weight of exploration cable, characterized by: comprises seven insulating wire cores (1) and a PPS conductive fiber filling core material (2) which are jointly twisted to form a cable core, an ETFE resin wrapping layer (3), an ethylene propylene diene monomer rubber extruded inner sheath layer (4), a double-steel-wire armor layer (5), a nylon anticorrosive layer (6) and a tetrafluoroethylene-propylene copolymerized fluororubber outer sheath layer (7) are sequentially coated outside the cable core, the double-steel-wire armor layer (5) has an inner double-layer armor steel wire composite wire and an outer double-layer armor steel wire composite wire which are of reverse spiral winding weaving structures and have different spiral angles, the inner and outer double-layer armored steel wire composite wires are formed by mixing a plurality of stainless steel wires and a plurality of nylon wires, the diameter of the nylon wires is smaller than that of the stainless steel wires, the diameter of the stainless steel wires at the inner layer is smaller than that of the stainless steel wires at the outer layer, the insulated wire core (1) comprises an inner conductor (11), a polyimide lapping isolation layer (12), an FEP insulation layer (13) and a semiconductive nylon tape lapping layer (14).

2. The 7-core double-steel-wire armored high-temperature load-bearing detection cable as claimed in claim 1, wherein: the PPS conductive fiber filling core material (2) is composed of a plurality of PPS conductive fiber bundles, and the PPS conductive fiber bundles are formed by twisting a plurality of PPS fibers and coating copper conductive coatings.

3. The 7-core double-steel-wire armored high-temperature load-bearing detection cable as claimed in claim 1, wherein: the diameter of the stainless steel wire of the inner layer is 0.8mm to 1.2mm, and the diameter of the stainless steel wire of the outer layer is 1mm to 1.5 mm.

4. The 7-core double-steel-wire armored high-temperature load-bearing detection cable according to claim 1, which is characterized in that: the wire diameter of the nylon wire is not more than 70 percent of that of the stainless steel wire.

5. The 7-core double-steel-wire armored high-temperature load-bearing detection cable according to claim 1, which is characterized in that: the inner conductor (11) is formed by twisting a plurality of tinned copper monofilaments with the wire diameter of 0.15mm to 0.38 mm.

6. The 7-core double-steel-wire armored high-temperature load-bearing detection cable as claimed in claim 1, wherein: the thickness of the polyimide lapping isolation layer (12) is 35-50 mu m.

7. The 7-core double-steel-wire armored high-temperature load-bearing detection cable according to claim 1, which is characterized in that: the thickness of the FEP insulating layer (13) is not more than 0.5 mm.

8. The 7-core double-steel-wire armored high-temperature load-bearing detection cable according to claim 1, which is characterized in that: the ETFE resin lapping layer (3) is an ETFE resin belt lapping and lapping structure, and the lapping rate is 15% -20%.

9. The 7-core double-steel-wire armored high-temperature load-bearing detection cable according to claim 1, which is characterized in that: the outer surface of the ethylene propylene diene monomer rubber extruded inner sheath layer (4) is provided with a thermoplastic polyurethane bonding layer.

10. The 7-core double-steel-wire armored high-temperature load-bearing detection cable according to claim 1, which is characterized in that: and the inner surface of the nylon anticorrosive layer (6) is provided with a thermoplastic EEA bonding layer.