Rotor core and steam turbine generator with rotor core

Abstract

The invention discloses a rotor core and a steam turbine generator with the rotor core. A concave-convex surface is formed on the side wall surface formed by connecting rotor punching sheets in the same row; the distance between the concave surface and the convex surface is the difference between the distance b and the distance a; and after a wire is embedded on the side walls of the rotor punching sheets, a gap is formed between the line and the concave surface, and the gap is a heat dissipation space of the rotor core, so that on the premise of ensuring the magnetic circuit and the strengthof the rotor core, the heat dissipation capacity and the heat dissipation uniformity of the rotor core are greatly improved, the influence of large local temperature difference of the rotor core on the operation efficiency of the steam turbine generator is avoided, the stable operation of the rotor core and the steam turbine generator with the rotor core is ensured, and the service life of the steam turbine generator is greatly prolonged.

Description

technical field [0001] The present invention relates to a rotor core and a turbogenerator with the rotor core. Background technique [0002] The rotor core is one of the key components of the turbogenerator. It is a part of the magnetic circuit and has good magnetic permeability. It is also one of the main parts that cause the temperature rise of the turbogenerator. In the existing rotor core 101, the center line 104 between the side walls of the opposite slots 103 on two adjacent rotor punches 102 is the same distance from the side walls of the rotor punches 102 on both sides, so that a single rotor punch The sheet 102 itself forms a symmetrical structure. After the multiple rotor cores 101 are laminated and connected in the axial direction, the side walls of the multiple rotor punching sheets 102 in the same row are butted to form a side plane, and the wires are wound on the side plane. When on, there is no heat dissipation gap between the wire and the side plane, such as...

AI Technical Summary

Problems solved by technology

In the existing rotor core 101, the center line 104 between the side walls of the opposite slots 103 on two adjacent rotor punches 102 is the same distance from the side walls of the rotor punches 102 on both sides, so that a single rotor punch The sheet 102 itself forms a symmetrical structure. After the multiple rotor cores 101 are laminated and connected in the axial direction, the side walls of the multiple rotor punching sheets 102 in the same row are butted to form a side plane, and the wires are wound on the side plane. When on, there is no heat dissipation gap between the wire and the side plane, such as figure 1 As shown, when the turbogenerator is in operation, the internal rotor core will generate magnetic circuit loss and heat loss, and these losses will be converted into heat energy, which will increase the temperature of the turbogenerator, and if the temperature is too high, the surface of the rotor core will Insulation aging, which affects its working efficiency and operational safety

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