CN210325317U

CN210325317U - Marine converter cable

Info

Publication number: CN210325317U
Application number: CN201921560394.0U
Authority: CN
Inventors: 王仕俊; 曾广彬; 陈冠瑜
Original assignee: Yangzhou City Hongqi Cable Making Co ltd
Current assignee: Yangzhou City Hongqi Cable Making Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-04-14
Anticipated expiration: 2029-09-19

Abstract

A marine frequency converter cable relates to the field of cables and comprises a cable core consisting of three main power supply wire cores and three auxiliary power supply wire cores, wherein the three main power supply wire cores are arranged in a tangent mode, and each auxiliary power supply wire core is arranged between two adjacent main power supply wire cores; the main power supply wire core and the auxiliary power supply wire core are identical in structure and respectively comprise a stranded tin-plated copper conductor, a calcined mica tape fire-resistant layer, a crosslinked polyethylene insulating layer and a tinned copper wire braided sub-shielding layer which are sequentially arranged from inside to outside; the periphery of the cable core is provided with a low-smoke zero-halogen irradiation cross-linked polyolefin inner sheath, the periphery of the low-smoke zero-halogen irradiation cross-linked polyolefin inner sheath is provided with a tinned copper wire woven armor layer, and the periphery of the tinned copper wire woven armor layer is provided with a low-smoke zero-halogen irradiation cross-linked polyolefin outer sheath. The utility model discloses improved electromagnetic compatibility performance, wire greatly and exchanged and the balanced ability of symmetry, the performance of reinforcing anti-interference and balanced harmonic voltage has offset the odd frequency in the higher harmonic.

Description

Marine converter cable

Technical Field

The utility model relates to a field of cable especially relates to structure of cable for converter.

Background

The frequency conversion technology is a technical revolution in the electromechanical field in recent years, the application of a frequency conversion speed regulation system is more and more popularized, the environment-friendly and energy-saving ship is concerned and developed along with the continuous pace of national green ocean construction, and the novel marine variable frequency motor is widely applied, so that a high-performance special power cable is required to be matched with the motor for use, the field work requirement is met, and the variable frequency motor is an important task of cable scientific research and production enterprises.

The common cable generally comprises a conductor, an insulating layer and a sheath layer, wherein the arrangement of main wire cores in the cable is not a symmetrical structure, and a shielding layer is not arranged. The cable is seriously disturbed, and the magnetic field is unstable, thereby influencing the safe use of the cable.

Disclosure of Invention

The utility model aims at overcoming prior art not enough, provide a marine converter cable, improved electromagnetic compatibility performance, wire greatly and exchanged and the balanced ability of symmetry, the reinforcing is anti-interference and the performance of balanced harmonic voltage, has offset the odd frequency in the higher harmonic.

The purpose of the utility model is realized like this: a marine frequency converter cable comprises a cable core consisting of three main power supply wire cores and three auxiliary power supply wire cores, wherein the three main power supply wire cores are arranged in a tangent mode, and each auxiliary power supply wire core is arranged between two adjacent main power supply wire cores; the main power supply wire core and the auxiliary power supply wire core are identical in structure and respectively comprise a stranded tin-plated copper conductor, a calcined mica tape fire-resistant layer, a crosslinked polyethylene insulating layer and a tinned copper wire braided sub-shielding layer which are sequentially arranged from inside to outside; the periphery of cable core sets up low smoke and zero halogen irradiation crosslinked polyolefin inner sheath, and the periphery of low smoke and zero halogen irradiation crosslinked polyolefin inner sheath sets up the tinned copper wire and weaves the armor, and the periphery that the armor was woven to the tinned copper wire sets up low smoke and zero halogen irradiation crosslinked polyolefin oversheath.

The utility model discloses a calcination mica tape flame retardant coating of main power supply sinle silk and auxiliary power supply sinle silk is the bilayer.

The utility model discloses the power sinle silk by three main power sinle silks (3 owner) + three vice power sinle silks (3 vice) adopts the concentric type to constitute jointly, is the symmetrical structure, and three main power sinle silks and three vice power sinle silks are equallyd divide and are adopted independent shielding technology respectively simultaneously, have improved electromagnetic compatibility performance, wire exchange and symmetrical balanced ability greatly, strengthen the performance of anti-interference and balanced harmonic voltage, offset the odd-order frequency in the higher harmonic; meanwhile, the inner protection layer adopts an extrusion type process, so that the stability of the cable structure is improved. The product has compact structure, simple manufacturing process and extremely convenient installation, use and maintenance.

The utility model discloses rational in infrastructure simple, it is easy to manufacture, is applicable to the rated voltage in the circuit of being connected between marine inverter motor and the variable frequency power supply of 3KV and below.

Drawings

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

Detailed Description

As shown in fig. 1, the marine converter cable includes a cable core composed of three main power supply wire cores 8 and three auxiliary power supply wire cores 9, the three main power supply wire cores 8 are externally tangent to each other, and each auxiliary power supply wire core 9 is respectively arranged between two adjacent main power supply wire cores 8 and externally tangent to each other. The main power supply wire core 8 and the auxiliary power supply wire core 9 are identical in structure and respectively comprise a stranded tinned copper conductor 1, a calcined mica tape fire-resistant layer 2, a crosslinked polyethylene insulating layer 3 and a tinned copper wire braided sub-shielding layer 4 which are sequentially arranged from inside to outside, wherein the calcined mica tape fire-resistant layer 2 is double-layered and is wound on the stranded tinned copper conductor 1.

The periphery of cable core sets up low smoke and zero halogen irradiation crosslinked polyolefin inner sheath 5, and the periphery of low smoke and zero halogen irradiation crosslinked polyolefin inner sheath 5 sets up tinned copper wire and weaves armor 6, and the periphery that armor 6 was woven to the tinned copper wire sets up low smoke and zero halogen irradiation crosslinked polyolefin oversheath 7.

The utility model discloses have well restrain higher harmonic, shield anti-interference, low smoke and zero halogen fire-retardant, fire-resistant, salt fog resistant, performances such as anti-collision, have stronger pulse voltage resistance performance simultaneously etc. the long-term operating temperature who allows of cable conductor is 90 ℃, the ambient temperature of use is not less than-35 ℃, the installation lays the temperature and is not less than-20 ℃.

Claims

1. A marine converter cable which characterized in that: the cable comprises a cable core consisting of three main power supply wire cores and three auxiliary power supply wire cores, wherein the three main power supply wire cores are arranged in a tangent manner, and each auxiliary power supply wire core is arranged between two adjacent main power supply wire cores; the main power supply wire core and the auxiliary power supply wire core are identical in structure and respectively comprise a stranded tin-plated copper conductor, a calcined mica tape fire-resistant layer, a crosslinked polyethylene insulating layer and a tinned copper wire braided sub-shielding layer which are sequentially arranged from inside to outside; the periphery of cable core sets up low smoke and zero halogen irradiation crosslinked polyolefin inner sheath, and the periphery of low smoke and zero halogen irradiation crosslinked polyolefin inner sheath sets up the tinned copper wire and weaves the armor, and the periphery that the armor was woven to the tinned copper wire sets up low smoke and zero halogen irradiation crosslinked polyolefin oversheath.

2. The marine converter cable of claim 1, wherein: the fire-resistant layers of the calcined mica tapes of the main power supply wire core and the auxiliary power supply wire core are double layers.