CN217719080U

CN217719080U - Flexible power cable for drilling platform top drive alternating current frequency conversion device

Info

Publication number: CN217719080U
Application number: CN202221697510.5U
Authority: CN
Inventors: 王仕俊; 曾广彬; 陈冠瑜; 胡仕国; 曾秀娟; 陈辉
Original assignee: Yangzhou City Hongqi Cable Making Co ltd
Current assignee: Yangzhou City Hongqi Cable Making Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-11-01
Anticipated expiration: 2032-07-04

Abstract

A flexible power cable for a drilling platform top drive alternating current frequency conversion device relates to the technical field of cables and comprises three main wire cores and three ground wire cores which are concentrically twisted; the three main wire cores respectively comprise a plurality of strands of tinned copper wire stranded main wire conductors, a main wire core ethylene propylene rubber insulating layer and a main wire core low-smoke halogen-free chloroprene mixed rubber sheath which are sequentially arranged from inside to outside; the three ground wire cores comprise a plurality of strands of tinned copper wire stranded ground wire conductors, ground wire core ethylene propylene rubber insulation layers and ground wire core low-smoke halogen-free chloroprene mixed rubber sheaths which are sequentially arranged from inside to outside; the cable comprises a cable core, a flame-retardant polyester composite non-woven fabric separation layer, a tinned copper wire braided shielding layer and a soft wear-resistant flame-retardant polyurethane elastomer outer sheath, wherein the cable core is wrapped with the flame-retardant polyester composite non-woven fabric separation layer, the tinned copper wire braided shielding layer is arranged outside the flame-retardant polyester composite non-woven fabric separation layer, and the soft wear-resistant flame-retardant polyurethane elastomer outer sheath is extruded outside the tinned copper wire braided shielding layer. The utility model discloses have good shielding anti-interference performance, satisfy simultaneously that the top drives and make a round trip to move about from top to bottom, satisfy variable frequency power device's supporting requirement.

Description

Flexible power cable for drilling platform top drive alternating current frequency conversion device

Technical Field

The utility model relates to a technical field of cable especially relates to drilling platform top is driven and is exchanged flexible power cable for frequency conversion device.

Background

In recent years, with the increasing development of marine resources in China, particularly the great attention on exploitation of marine oil, a comprehensive offshore platform is developed rapidly, energy-saving and environment-friendly devices with high technological content are injected into the platform, and various cable connecting lines with advanced functions are needed. The power travelling cable special for the top drive of the oil drill floor is required to have excellent shielding and anti-interference performance under severe conditions of salt mist, humidity, radiation and the like of marine climate, and simultaneously meet the requirements of the top drive for moving back and forth up and down and the matching requirements of a variable frequency power device, while the existing cable can not meet the working requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art's is not enough, provides a drilling platform top drives exchanges flexible power cable for frequency conversion device, has good shielding anti-interference performance, satisfies simultaneously that the top drives and makes a round trip to move about from top to bottom, satisfies frequency conversion power device's supporting requirement.

The purpose of the utility model is realized like this: the flexible power cable for the drilling platform top drive alternating current frequency conversion device comprises three main wire cores and three ground wire cores which are concentrically stranded; the three main wire cores have the same structure and respectively comprise a multi-strand tinned copper wire stranding main wire conductor, a main wire ethylene propylene rubber insulating layer and a main wire low-smoke halogen-free chloroprene mixing rubber sheath which are sequentially arranged from inside to outside, and the main wire ethylene propylene rubber insulating layer and the main wire low-smoke halogen-free chloroprene mixing rubber sheath are co-extruded on the multi-strand tinned copper wire stranding main wire conductor; the three ground wire cores have the same structure and respectively comprise a multi-strand tinned copper wire stranded ground wire conductor, a ground wire ethylene propylene rubber insulating layer and a ground wire low-smoke halogen-free chloroprene mixed rubber sheath which are sequentially arranged from inside to outside, wherein the ground wire ethylene propylene rubber insulating layer and the ground wire low-smoke halogen-free chloroprene mixed rubber sheath are co-extruded on the multi-strand tinned copper wire stranded ground wire conductor; the cable comprises a cable core and is characterized in that a flame-retardant polyester composite non-woven fabric separation layer is wound outside the cable core, a tinned copper wire braided shielding layer is arranged outside the flame-retardant polyester composite non-woven fabric separation layer, and a soft wear-resistant flame-retardant polyurethane elastomer outer sheath is extruded outside the tinned copper wire braided shielding layer.

Preferably, adhesive tapes are filled between the flame-retardant polyester composite non-woven fabric separation layer and the three main wire cores and between the flame-retardant polyester composite non-woven fabric separation layer and the three ground wire cores.

The utility model has the advantages that: the main wire core and the ground wire core coating layer are both insulated and sheathed by adopting a double-layer co-extrusion process, the electrical property and the physical property of the cable are greatly improved, meanwhile, the 3+3 structure is adopted, the electromagnetic compatibility and the wire interchange and symmetrical balance capacity are improved, the cable is softer, the cable has excellent shielding anti-interference performance, the top drive is simultaneously satisfied, the cable moves back and forth up and down, and the matching requirement of a variable frequency power device is satisfied.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in figure 1, the flexible power cable for the drilling platform top drive alternating current frequency conversion device comprises a cable core formed by concentrically twisting three main wire cores 1 and three ground wire cores 5.

The three main wire cores 1 are identical in structure and comprise a multi-strand tinned copper wire stranded main wire conductor 2, a main wire ethylene propylene rubber insulating layer 3 and a main wire low-smoke halogen-free chloroprene mixed rubber sheath 4 which are sequentially arranged from inside to outside, wherein the main wire ethylene propylene rubber insulating layer 3 and the main wire low-smoke halogen-free chloroprene mixed rubber sheath 4 are co-extruded on the multi-strand tinned copper wire stranded main wire conductor 2.

The three ground wire cores 5 are identical in structure and comprise a multi-strand tinned copper wire stranded ground wire conductor 6, a ground wire core ethylene propylene rubber insulating layer 7 and a ground wire core low-smoke halogen-free chloroprene mixed rubber sheath 8 which are sequentially arranged from inside to outside, wherein the ground wire core ethylene propylene rubber insulating layer 7 and the ground wire core low-smoke halogen-free chloroprene mixed rubber sheath 8 are co-extruded on the multi-strand tinned copper wire stranded ground wire conductor 6.

Set up adhesive tape 9 outside the cable core, improve the roundness, fire-retardant type polyester composite non-woven fabrics separation layer 10 is around the package outside three main line cores 1, three earth core 5, adhesive tape 9, sets up tinned copper wire outside fire-retardant type polyester composite non-woven fabrics separation layer 10 and weaves shielding layer 11, crowded soft wear-resisting type flame retardant polyurethane elastomer oversheath 12 of package outside tinned copper wire weaves shielding layer 11.

The utility model discloses have good fire-retardant, anti-electromagnetic interference, ultraviolet radiation resistance, resistant oil, acid and alkali corrosion resistance, performance such as ageing-resistant and well restrain the higher harmonic function, the operating temperature that the cable was allowed for a long time should not be more than 125 ℃, the ambient temperature of use is not less than-40 ℃, the installation lays the temperature and is not less than-25 ℃. The utility model is suitable for an exchange 50HZ, rated voltage is in on 1.8/3KV and following drilling platform top drive device exchange among the variable frequency power supply circuit.

Claims

1. Drilling platform top is driven and is exchanged flexible power cable for frequency conversion device, characterized by: the cable comprises a cable core formed by concentrically twisting three main wire cores and three ground wire cores; the three main wire cores have the same structure and respectively comprise a multi-strand tinned copper wire stranded main wire conductor, a main wire ethylene propylene rubber insulating layer and a main wire low-smoke halogen-free chloroprene mixed rubber sheath which are sequentially arranged from inside to outside, wherein the main wire ethylene propylene rubber insulating layer and the main wire low-smoke halogen-free chloroprene mixed rubber sheath are co-extruded on the multi-strand tinned copper wire stranded main wire conductor; the three ground wire cores have the same structure and respectively comprise a multi-strand tinned copper wire stranded ground wire conductor, a ground wire ethylene propylene rubber insulating layer and a ground wire low-smoke halogen-free chloroprene mixed rubber sheath which are sequentially arranged from inside to outside, wherein the ground wire ethylene propylene rubber insulating layer and the ground wire low-smoke halogen-free chloroprene mixed rubber sheath are co-extruded on the multi-strand tinned copper wire stranded ground wire conductor; the cable comprises a cable core and is characterized in that a flame-retardant polyester composite non-woven fabric separation layer is wound outside the cable core, a tinned copper wire braided shielding layer is arranged outside the flame-retardant polyester composite non-woven fabric separation layer, and a soft wear-resistant flame-retardant polyurethane elastomer outer sheath is extruded outside the tinned copper wire braided shielding layer.

2. The flexible power cable for the drilling platform top drive alternating current frequency conversion device as claimed in claim 1, wherein: and adhesive tapes are filled between the flame-retardant polyester composite non-woven fabric separation layer and the three main wire cores and between the flame-retardant polyester composite non-woven fabric separation layer and the three ground wire cores.