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Stator bar for steam-turbine generator and internal braided wire transposition method of stator bar

A technology for turbogenerators and stator bars, which is applied in the manufacture of stator/rotor bodies, electrical components, electromechanical devices, etc., which can solve the problems of low generator operation safety and large circulation loss, etc., and achieve the reduction of circulation paths and the circulation Loss reduction, effect of reducing circulation loss

Active Publication Date: 2015-11-25
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a stator bar of a turbogenerator, which solves the problem of low generator operation safety due to large circulation loss in the existing stator bar

Method used

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  • Stator bar for steam-turbine generator and internal braided wire transposition method of stator bar
  • Stator bar for steam-turbine generator and internal braided wire transposition method of stator bar
  • Stator bar for steam-turbine generator and internal braided wire transposition method of stator bar

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Embodiment Construction

[0027] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0028] According to an embodiment of the present application, refer to figure 1 with 2 , figure 1 A structural schematic diagram of a turbogenerator stator bar is shown; figure 2 Shows a perspective view of the end of the stator bar; in the stator winding of the turbogenerator, the part outside the stator core 2 is the end of the stator winding, and the part inside the stator core 2 is the slot of the stator winding; as ...

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Abstract

The invention discloses a stator bar for a steam-turbine generator and an internal braided wire transposition method of the stator bar. The stator bar comprises transposed braided wires which are transversely arranged into four columns; a slot center line is taken as a boundary by the transposed braided wires on a slot part; two columns of transposed braided wires at the left side and the right side respectively form transposition groups; the transposition modes of the two transposition groups are in mirror image distribution about the slot center line; the braided wires of the two transposition groups are welded together at the end parts; and an upper layer of stator bar bodies and a lower layer of stator bar bodies in a same coil are connected with each other through a head merging sheath at the end parts of the transverse transposition groups at the same side. According to the stator bar for the steam-turbine generator and the internal braided wire transposition method of the stator bar, circulating current in the stator bar can be effectively suppressed; the circulating current loss is reduced; the operation efficiency and the operation safety of a generator are greatly improved; and the stator bar has great application value.

Description

technical field [0001] The invention relates to the technical field of design and manufacture of a turbogenerator, in particular to a stator bar of a turbogenerator and a method for transposition of inner strands of the stator bar. Background technique [0002] The stator bar is one of the core components in the design and manufacture of the turbogenerator. The stator bar of the turbogenerator mainly adopts the bar type bar. The skin effect of the bar will obviously produce eddy current loss. In order to reduce the eddy current loss in the stator bar, the stator bar is generally divided into several thinner strands. For a turbogenerator with a larger capacity, the strands in the stator bar are arranged in four rows horizontally, so that The eddy current in the strands can be limited, but this limitation of the eddy current is also limited, mainly due to the structure of the existing stator bar, which is: the upper stator bar of a slot part of the stator winding Composed of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/50H02K3/38H02K15/02
Inventor 梁艳萍边旭于鸿浩王晨光
Owner HARBIN UNIV OF SCI & TECH
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