CN202487278U

CN202487278U - An intermediate frequency low loss balanced rubber sheathed cable for ships

Info

Publication number: CN202487278U
Application number: CN201220109501XU
Authority: CN
Inventors: 施永久; 刘景光; 李小琴; 徐庭元
Original assignee: Jiangsu Zhongmei Cable Group Co Ltd
Current assignee: Jiangsu Zhongmei Cable Co Ltd
Priority date: 2012-03-22
Filing date: 2012-03-22
Publication date: 2012-10-10
Anticipated expiration: 2022-03-22

Abstract

The utility model discloses an intermediate-frequency low-consumption balance cabtyre cable for ships. The intermediate-frequency low-consumption balance cabtyre cable comprises a cable cores in the middle of the cable, wherein fillers are arranged in gaps among the cable cores, an inner protective layer is arranged outside the cable cores, a shielding layer weaved by tin-plated copper wires is weaved outside the inner protective layer, and an outer protective layer is wrapped outside the shielding layer weaved by the tin-plated copper wires in an extruded mode. The cable cores are formed by twisting a plurality of wire cores, and each wire core consists of a conductor in the middle and an insulating layer wrapped on the outer surface of the conductor in the extruded mode. By utilizing the weaving of the tin-plated copper wires, the influence of outside devices and electric fields on the cable can be reduced, the deviation among phases of the cable is small, the balance of the phases of the cable is ensured, a skin effect and a proximity effect caused by unbalance of the cable are reduced, and the overlarge pressure drop caused by resistance and reactance among the wire cores can be reduced simultaneously.

Description

A kind of naval vessel is with intermediate frequency low consumption balance Plastic-sheathed Cable

Technical field

The utility model relates to a kind of power cable, specifically is that being electrically connected of a kind of naval vessel intermediate frequency electric equipment and intermediate frequency power supply used cable.

Background technology

It is on the naval vessel, to provide power supply used a kind of cable as the intermediate frequency electric device that the naval vessel uses immediate frequency cable, and existing naval vessel cable is power frequency 50Hz, and conductor is common zinc-plated five types of conductors, and insulating material is common ethylene propylene diene rubber.The structure of the general immediate frequency cable that uses is extruded insulation and a lapped insulation shielding composition core on the single copper conductor on the naval vessel, and filler is set outside cable core then, and wrapped again formation lapping layer weaves the copper wire braid at last and extrudes oversheath.

Problem and shortcoming that prior art exists:

1) the intermediate frequency plant capacity is big, moment starting current big, existing naval vessel cable is a low-frequency cable, little with power under the situation of cross section, ampacity is less, may cause intermediate frequency equipment to be difficult to start, even can cause device damage.

2) conductor is common five types of conductors; The conductor twisting pitch is bigger, and the conductor resistance deviation is bigger between the every phase of multicore cable, and transmission current is unstable; The resistance between the core and the instability of impedance can cause the obvious of skin and proximity effect comparison that become between every phase, can cause the pressure drop of cable excessive.

3) common insulating material does not belong to low medium ethylene propylene diene rubber, can cause because the higher use that influences cable of dielectric loss of insulating material.

4) the increasing employing intermediate frequency of war products equipment, the existing immediate frequency cable that uses all is imported product, is unfavorable for national defense safety and national security from particularity, the confidentiality angle of naval's equipment.

The utility model content

The utility model technical problem to be solved has provided a kind of naval vessel that can better satisfy actual needs with intermediate frequency low consumption balance Plastic-sheathed Cable.

The described a kind of naval vessel of the utility model is with intermediate frequency low consumption balance Plastic-sheathed Cable; Comprise the cable core that cable is middle, the slit between cable core is provided with filler, and sheath is set outside cable core; Outside sheath, weave the tinned copper wire woven shield, outside the tinned copper wire woven shield, extrude outer jacket.

Said cable core has that the several wire core is stranded to form, and core then is made up of the conductor of centre and the insulating barrier that is extruded in the conductor outer surface.

The utility model has solved the problem of the disequilibrium between excessive and every phase conductor resistance of numerical value such as the pressure drop, electric capacity, inductance of existing shipboard cable and the insulation resistance; The braiding of employing tinned copper wire; Count >=80% can reduce the influence that external equipment and electric field cause cable.Deviation is less between the every phase of cable, has guaranteed the balance of every phase, has reduced cable because imbalance causes skin effect and proximity effect, simultaneously, can reduce because the excessive problem of pressure drop that resistance and reactance cause between the core.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1,

Fig. 2 is the structural representation of the utility model embodiment 2.

Embodiment

As depicted in figs. 1 and 2; The described a kind of naval vessel of the utility model is with intermediate frequency low consumption balance Plastic-sheathed Cable; Comprise the cable core that cable is middle; Said cable core is by three (Fig. 1) or four stranded forming of (Fig. 2) core, and core is provided with sheath 4 then by the conductor 1 of centre and be extruded in the slit that the insulating barrier 2 of conductor 1 outer surface forms between cable core and be provided with filler 3 outside cable core; Braiding tinned copper wire woven shield 5 extrudes outer jacket 6 outside tinned copper wire woven shield 5 outside sheath 4.

The characteristics of the utility model:

1, conductor adopts tinned conductor, monofilament deviation to guarantee at ± 0.001mm layer-stranding when stranded; Every layer of pitch multiple proportions is controlled in 12; Guarantee stranded compactness, the conductor distortion is little, simultaneously; Guarantee that every monofilament or synnema strand can not have welding or joint, guarantee every phase conductor resistance deviation≤1%.

2, the EPDM electro-insulating rubber material of dielectric loss≤0.02, insulation resistance>=5000 M Ω/km is adopted in the insulation of the utility model, guarantees every phase insulation resistance deviation≤1%.

3, the three-layer co-extruded moisture balance extruder of insulating exruded employing import is extruded, and guarantees insulating exruded tight type, does not have steam to get into conductor, guarantees insulation eccentricity degree≤10%.

4, during stranding, the pitch multiple proportions is controlled in 10 times, guarantees the stranded tight non-loosening of core, guarantees between every phase balance each other.

5, adopt the tinned copper wire braiding behind the stranding, count >=80% can reduce the influence that external equipment and electric field cause cable.

6, above control mode can guarantee that deviation is less between every phase; Guaranteed the balance of every phase; Reduced cable because imbalance causes skin effect and proximity effect, simultaneously, can reduce since between the core because the excessive problem of pressure drop that resistance and reactance cause.

The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement, these improve the protection range that also should be regarded as the utility model.

Claims

1. A medium-frequency low-consumption balanced rubber-sheathed cable for ships, including a cable core in the middle of the cable, characterized in that a filler (3) is provided in the gap between the cable cores, and an inner sheath (4) is provided outside the cable core ), the tinned copper wire braided shielding layer (5) is braided outside the inner sheath (4), and the outer sheath (6) is extruded outside the tinned copper wire braided shielding layer (5).

2. The medium-frequency low-consumption balanced rubber-sheathed cable for ships according to claim 1, characterized in that the cable core is formed by twisting several wire cores, and the wire cores are composed of the middle conductor (1) and It consists of an insulating layer (2) extruded on the outer surface of a conductor (1).