Turbonator rotor conductive screw structure and connection method

Abstract

The invention discloses a turbonator rotor conductive screw structure and a connection method. The screw structure comprises a rotor conductive screw, a J-shaped lead, a right-handed nut, a left-handed nut, a gasket and a rotor shaft inner conductor, the lower end of the rotor conductive screw is screwed into the rotor shaft inner conductor, the rotor winding J-shaped lead is connected to the upper end of the rotor conductive screw and fastened through the right-handed nut, and then the right-handed nut is locked through the left-handed nut. According to the invention, the defects of traditional turbonator rotor conductive screw connecting structures are overcome, and the vibration loosening resistance of a connecting structure can be effectively enhanced; and meanwhile, the conductive reliability is enhanced, the conductor heating condition caused by resistance change can be effectively relieved, and the equipment safety is protected.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment, and in particular relates to a conductive screw structure and connection method for a turbogenerator rotor. Background technique [0002] prior art, such as figure 1 As shown in Fig. 1, first, the conductor in the rotor shaft of the turbogenerator is screwed to the lower end of the old-fashioned conductive screw, and then a high-strength bolt is used to pass through the connection hole of the gasket and the J-shaped lead of the winding, and then screwed into the inner thread of the upper end of the old-fashioned conductive screw. , Tighten the rotor winding J-leads and old-fashioned conductive screws to form a current channel. [0003] When the turbo generator is running normally, the speed is as high as 3000rpm. Since the connection point between the old-fashioned conductive screw and the J-type lead of the rotor winding is at the edge of the entire generator rotating structure, th...

AI Technical Summary

Problems solved by technology

[0004] (1) When the generator is running normally and starts and stops, the high-strength bolts connected to the upper part will bear large centrifugal force, vibration and variable load impact, resulting in vibration loosening

The structure of traditional bolts and gaskets has poor anti-vibration loosening ability in a non-stationary environment

[0005] (2) After the high-strength bolts connected to the upper part are loosened, even if the wire withdrawal is not very serious, under the action of strong centrifugal force, the surface-to-surface connection between the old-fashioned conductive screw and the J-type lead of the winding will be separated

This will cause the contact resistance of the connection point to double, and the temperature will rise severely when a large current is passed, which will endanger the safety of the equipment

[0006] For a long time, equipment failures caused by the loose connection between the old-fashioned conductive screws of the turbogenerator and the J-leads of the windings have occurred from time to time

Images