CN217444126U

CN217444126U - 4-core double-steel-wire armored normal-temperature load-bearing detection cable

Info

Publication number: CN217444126U
Application number: CN202220827991.0U
Authority: CN
Inventors: 江平; 黄建卫; 蔡长威; 刘书鑫
Original assignee: Zhejiang Products Zhongda Cable Co ltd
Current assignee: Zhejiang Products Zhongda Cable Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-09-16
Anticipated expiration: 2032-04-11

Abstract

The utility model discloses a 4 two steel wire armours normal atmospheric temperature hold lotus detecting cable of core, including four insulation core and the common transposition of iron powder polypropylene composite resin packing core constitution cable core, the outside cladding of cable core has polyester fiber plain weave cloth around the covering in proper order, the crowded package inner sheath layer of EPT rubber, two steel wire armoring layers, nylon anticorrosive coating and the crowded package outer sheath layer of TPU, two steel wire armoring layers are that inside and outside double-deck armoured steel wire composite wire is each other different for reverse spiral winding braided structure and spiral angle, insulation core includes the inner conductor, wind the covering in the PET semiconduction, polypropylene insulating layer and PET semiconduction wind the covering outward. The cable has better flexibility, bears higher mechanical load, has good bending resistance, is not easy to break a core and a wire, ensures the safety and reliability of the cable, and prolongs the service life.

Description

4-core double-steel-wire armored normal-temperature load-bearing detection cable

Technical Field

The application relates to the technical field of cables, in particular to a 4-core double-steel-wire armored normal-temperature load-bearing detection 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

This application is not enough to prior art, and the technical problem that solve provides a 4 core double steel wire armor normal atmospheric temperature bearing load exploration cable, and the pliability is better, bears higher mechanical load, and the bending resistance is good, is difficult for appearing disconnected core broken string, guarantees cable fail safe nature, increase of service life.

The present application solves the above-mentioned problems by the following technical solutions.

A4-core double-steel-wire armored normal-temperature load-bearing detection cable comprises four insulating wire cores and an iron powder polypropylene composite resin filled core material which are jointly twisted to form a cable core, wherein a polyester fiber plain weave wrapping layer, an ethylene propylene diene monomer rubber extruded inner sheath layer, a double-steel-wire armored layer, a nylon anticorrosive layer and a TPU extruded outer sheath layer are sequentially wrapped outside the cable core, the double-steel-wire armored layer is formed by an inner double-layer armored steel wire and an outer double-layer armored steel wire which are of a reverse spiral winding and weaving structure and different in spiral angle, the inner double-layer armored steel wire and the outer double-layer armored steel wire are formed by mixing a plurality of stainless steel wires and a plurality of para-type wholly aromatic copolyamide drawn fiber stranded wires, the wire diameter of the para wholly aromatic copolyamide drawn fiber stranded wires is not more than 80% of the wire diameter of the stainless steel wires, the wire diameter of the inner layer stainless steel wire is 90-95% of the wire diameter of the outer layer, the insulating wire cores comprise inner conductors, PET semiconductive inner layers, and PET semiconductive inner layers, Polypropylene insulation and a PET semiconductive outer wrap.

Preferably, the inner conductor is formed by twisting several tinned copper monofilaments with the diameter of 0.18mm to 0.33mm and several para-type wholly aromatic copolyamide drawn fibers.

Preferably, the diameter of the stainless steel wire of the inner layer is 0.9mm to 1.2mm, and the diameter of the stainless steel wire of the outer layer is 1mm to 1.26 mm.

Preferably, the diameter of the para-type wholly aromatic copolyamide drawn fiber strand is 60 to 75% of the diameter of the stainless steel wire.

Preferably, the PET semiconductive inner wrapping layer and the PET semiconductive outer wrapping layer are both of a PET semiconductive belt one-way spiral lapping and covering wrapping structure, and the lapping rate is 20% -30%.

Preferably, the spiral angle of the inner and outer double-layer armored steel wire composite wires is 35-50 degrees.

Preferably, the polyester fiber plain cloth wrapping layer has a thickness of 100 to 250 μm.

Preferably, the double-steel-wire armor layer is coated with insulating and lubricating silicone grease.

Preferably, the thermoplastic EEA bonding layer is arranged on the outer surface of the ethylene propylene diene monomer extruded inner sheath layer.

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

The beneficial effect of this application:

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 have different spiral angles, the inner and outer double-layer armor steel wire composite wires are formed by mixing stainless steel wires and para-type wholly aromatic copolyamide tensile fiber stranded wires, the para-type wholly aromatic copolyamide tensile fiber stranded wires are high in tensile strength and large in elastic modulus, the flexibility and the tensile resistance of the armor layer are improved, the proportional size relation among the wire diameter of the para-type wholly aromatic copolyamide tensile fiber stranded 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 local stress concentration of the armor layer is reduced, the torque force during bending is reduced, the armor layer is coated with insulating lubricating silicone grease to obtain sufficient antifriction effect among the stainless steel wires, the bending resistance is enhanced, and when a cable bears mechanical load, the cable has the advantages of preventing core breaking and wire breaking, improving the stability of the electrical characteristics of the cable, ensuring the safe reliability of the cable in long-term use and prolonging the service life.

2. The iron powder polypropylene composite resin filled core material is beneficial to the balance of the stress of the cable core, the improvement of the mechanical strength and the stretch-proof performance, the local stress concentration of each wire core in the cable core is reduced, the occurrence of core breaking and wire breaking is prevented, the iron powder polypropylene composite resin filled core material and the PET semiconductive outer wrapping layer form a reliable shielding effect, the signal attenuation is reduced, and the long-term stable electrical characteristics of the cable are ensured.

3. The inner conductor is formed by twisting the tinned copper monofilament and the para-type wholly aromatic copolyamide drawn fiber, the para-type wholly aromatic copolyamide drawn fiber has high tensile elastic modulus, the tensile strength of the inner conductor is improved, the flexibility of the inner conductor formed by twisting the para-type wholly aromatic copolyamide drawn fiber together with the tinned copper monofilament is better, the tensile resistance is enhanced, the core is not easy to break, and the safety and reliability of the cable are ensured.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Description of reference numerals:

1-an insulating wire core, 11-an inner conductor, 12-a PET semiconductive inner wrapping layer, 13-a polypropylene insulating layer, 14-a PET semiconductive outer wrapping layer, a 2-iron powder polypropylene composite resin filled core material, a 3-a polyester fiber plain weave wrapping layer, a 4-ethylene propylene diene monomer extruded inner sheath layer, a 5-double-wire armor layer, a 6-nylon anticorrosive layer and a 7-TPU extruded outer sheath layer.

Detailed Description

The terminology used in the description of the embodiments of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the application, as the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the 4-core double-steel-wire armored normal-temperature load-bearing detection cable according to the embodiment of the present application includes four insulated wire cores 1 and an iron powder polypropylene composite resin filled core material 2, which are twisted together to form a cable core. The insulated wire core 1 comprises an inner conductor 11, a PET semi-conductive inner wrapping layer 12, a polypropylene insulating layer 13 and a PET semi-conductive outer wrapping layer 14, and specifically, the inner conductor 11 is formed by twisting a plurality of tin-plated copper monofilaments with the diameter of 0.18mm to 0.33mm and a plurality of para-type wholly aromatic copolyamide drawn fibers. In one embodiment, the PET semiconductive inner wrapping layer 12 and the PET semiconductive outer wrapping layer 14 are both PET semiconductive belt unidirectional spiral lapping wrapping structures, and the lapping rate is 20% to 30%.

The cable core is sequentially coated with a polyester fiber plain weave wrapping layer 3, an Ethylene Propylene Diene Monomer (EPDM) extruded inner sheath layer 4, a double-steel-wire armor layer 5, a nylon anticorrosive layer 6 and a Thermoplastic Polyurethane (TPU) extruded outer sheath layer 7, the double-steel-wire armor layer 5 is coated with insulating and lubricating silicone grease, a thermoplastic ethylene-propylene-diene monomer (EEA) adhesive layer is arranged on the outer surface of the EPDM extruded inner sheath layer 4, and a thermoplastic EEA adhesive layer is arranged on the inner surface of the nylon anticorrosive layer 6. The thickness of the polyester fiber plain woven fabric wrapping layer 3 is 100-250 mu m. The double-steel-wire armor layer 5 is formed by the way that inner and outer double-layer armor steel wire composite wires are of reverse spiral winding weaving structures and are different in spiral angle, and further, the spiral angle of each of the inner and outer double-layer armor steel wire composite wires is 35-50 degrees. 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 para-type wholly aromatic copolyamide tensile fiber stranded wires, the diameter of the inner layer stainless steel wire is 90-95% of that of the outer layer stainless steel wire, specifically, the diameter of the inner layer stainless steel wire is 0.9-1.2 mm, and the diameter of the outer layer stainless steel wire is 1-1.26 mm. The diameter of the para-type wholly aromatic copolyamide drawn fiber strand is not more than 80% of the diameter of the stainless steel wire, and further is 60-75% of the diameter of the stainless steel wire.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application.

Claims

1.4 two steel wire armours of core normal atmospheric temperature bear the weight of exploration cable, characterized by: the cable comprises four insulating wire cores (1) and an iron powder polypropylene composite resin filling core material (2) which are jointly twisted to form a cable core, wherein polyester fiber plain weave cloth 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 TPU extruded outer sheath layer (7) are sequentially wrapped outside the cable core, the double-steel-wire armor layer (5) is formed by mixing a plurality of stainless steel wires and a plurality of para-type aromatic copolyamide drawn fiber strands, the diameters of the para-type aromatic copolyamide drawn fiber strands are not more than 80% of the diameters of the stainless steel wires, the diameters of the inner stainless steel wires are 90-95% of the diameters of the outer stainless steel wires, and the insulating wire cores (1) comprise inner conductors (11), The PET semi-conductive inner wrapping layer (12), the polypropylene insulating layer (13) and the PET semi-conductive outer wrapping layer (14).

2. The 4-core double-steel-wire armored normal-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 diameter of 0.18mm to 0.33mm and a plurality of para-type wholly aromatic copolyamide drawn fibers.

3. The 4-core double-steel-wire armored normal-temperature load-bearing detection cable according to claim 1, which is characterized in that: the diameter of the stainless steel wire of the inner layer is 0.9mm to 1.2mm, and the diameter of the stainless steel wire of the outer layer is 1mm to 1.26 mm.

4. The 4-core double-steel-wire armored normal-temperature load-bearing detection cable according to claim 1, which is characterized in that: the diameter of the para-type wholly aromatic copolyamide drawn fiber strand is 60-75% of that of the stainless steel wire.

5. The 4-core double-steel-wire armored normal-temperature load-bearing detection cable according to claim 1, which is characterized in that: the PET semi-conductive inner wrapping layer (12) and the PET semi-conductive outer wrapping layer (14) are both PET semi-conductive belt one-way spiral lapping and covering wrapping structures, and the lapping rate is 20% -30%.

6. The 4-core double-steel-wire armored normal-temperature load-bearing detection cable according to claim 1, which is characterized in that: the spiral angle of the inner and outer double-layer armored steel wire composite wire is 35-50 degrees.

7. The 4-core double-steel-wire armored normal-temperature load-bearing detection cable according to claim 1, which is characterized in that: the thickness of the polyester fiber plain woven fabric wrapping layer (3) is 100-250 mu m.

8. The 4-core double-steel-wire armored normal-temperature load-bearing detection cable according to claim 1, which is characterized in that: and the double-steel-wire armor layer (5) is coated with insulating and lubricating silicone grease.

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

10. The 4-core double-steel-wire armored normal-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.