A cable core of long stator coiling group cable and its making method

A long stator and winding technology, applied in cable/conductor manufacturing, textile cables, communication cables, etc., can solve the problems of not very smooth outer surface, poor softness, and low filling rate of the cable core, and achieve excellent mechanical properties and full filling The effect of high efficiency and easy bending and forming

Inactive Publication Date: 2007-12-12
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cable core of the long stator winding cable produced in the prior art still has the disadvantages that the filling rate is n

Method used

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  • A cable core of long stator coiling group cable and its making method
  • A cable core of long stator coiling group cable and its making method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] Please refer to Fig. 1. Fig. 1 is a schematic cross-sectional view of Embodiment 1 of a cable core of a long stator winding cable of the present invention. It can be seen from Figure 1 that the core of the winding cable of the present invention is a multi-layer structure formed by twisting multiple single wires, including an inner core layer 1 and an outer core layer 2. The inner core layer 1 is composed of four cross-sections: A circular core layer composed of fan-shaped inner core single wires. The fan-shaped single wires 11 have small rounded corners at the edges and corners. After being twisted, a central small hole 3 is formed in the center. This central small hole 3 along the axial direction of the cable, When the cable is running, the air can circulate, which reduces the temperature of the cable and increases the current carrying capacity of the cable. In the cable core of the winding cable of the present invention, the outer core layer 2 is a tubu...

Example Embodiment

[0038] Example 2

[0039] Please refer to FIG. 2, which is a cross-sectional schematic diagram of Embodiment 2 of a cable core of a long stator winding cable of the present invention. It can be seen from Figure 2 that the core structure of the winding cable in this embodiment is similar to the core structure of the winding cable in embodiment 1, except that the outer core single wire in embodiment 2 is a Z-shaped single wire 21. The first layer from the inside to the outside of the core layer 2 is a circle formed by twelve Z-shaped single wires 21 arranged, and the second layer is a circle formed by eighteen Z-shaped single wires 21 arranged.

[0040] In this embodiment, the core of the winding cable uses copper-clad aluminum wire as the conductive material. The conductivity of the copper-clad aluminum wire is 68.5% IACS (International Annealed Copper Standard Conductivity), which has better conductivity than previous conductive materials.

Example Embodiment

[0041] Example 3

[0042] Please refer to Fig. 3, which is a schematic cross-sectional view of Embodiment 3 of a cable core of a long stator winding cable of the present invention. It can be seen from Figure 3 that the core structure of the winding cable in this embodiment is similar to the core structure of the winding cable in Embodiment 1, except that the outer core single wire in this embodiment is a C-shaped single wire 23. The first layer from the inside to the outside of the core layer 2 is a circle formed by twelve C-shaped single wires 23 arranged, and the second layer is a circle formed by eighteen C-shaped single wires 21 arranged.

[0043] In this embodiment, electrical aluminum is used as the conductive material for the cable core of the winding cable. Electrical aluminum has a conductivity of 63% IACS (International Annealed Copper Standard Conductivity), which has better conductivity than previous conductive materials.

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Abstract

The invention relates to cable core of long stator winding cable, and the several single-wires are twisted to form the multilayer structure, said single-wire is preformed as the inter-embedding shape single-wire, the inner sandwich layer is the circular sandwich layer which consists of sector-shaped inner sandwich shape single-wire, and the outer sandwich layer is the pipe structure which is twisted by several outer sandwich single-wires, and the production of cable core of long stator winding cable includes following steps: (1)rolling aluminum bar; (2) extending aluminum bar; (3)producing the shape single-wire and twisting it; (4)annealing treatment. The surface of cable core of winding cable in invention is smooth, and it has high fill factor, high conducting performance, good mechanical property, and easy to be bent forming.

Description

technical field [0001] The invention relates to a cable, in particular to a cable core for a long stator winding cable used for a rail of a maglev train and a preparation method thereof. Background technique [0002] The cables used for the long stator windings of the rails of the maglev train are fixed in the long stator slots by bending the cables in a serpentine manner within a limited space. The outer diameter of such cables must match the shape of the raceway. In order to increase the running speed of the train, the voltage level of the cables passing through the long stator winding also needs to be further increased. After the voltage applied to the cable is increased, the insulation performance of the cable needs to be improved accordingly, which can be achieved by improving the insulation material or appropriately increasing the thickness of the insulation material. However, no matter which state occurs, the outer diameter of the core of the long stator winding cab...

Claims

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Application Information

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IPC IPC(8): H01B11/00H01B13/00
CPCD07B1/08
Inventor 黄豪士季世泽何大海刘斌程向前王松明史黎明
Owner TONGJI UNIV
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