Diaphragm coupling is a flexible connection mechanism that plays a connecting role between the transmission shaft system and transmits torque, the diaphragm coupling has the characteristics of high speed and compact structure, and its key component metal diaphragm group plays an important role in compensating for the relative displacement of the two shafts of the connection, and the key elements that make up the coupling are quite different from the resonance frequency, and the system does not produce resonance phenomenon.
Diaphragm couplings
The equivalent stress and strain on the left and right sides of the metal diaphragm group at the upper and lower bolt holes of the main drive are larger, and the mechanical properties of different materials and different diaphragm shapes are compared, and a reasonable diaphragm shape design is proposed to improve the mechanical properties of the splint bushing metal diaphragm coupling. Diaphragm couplings often work at high speeds, and fatigue has become one of the forms of failure of splint bushing metal diaphragm couplings.
Diaphragm couplings
Fatigue damage refers to the destruction of the mechanical properties of the materials that make up the mechanical structure when the mechanical structure is subjected to cyclic reciprocating stress. The standard of whether the coupling can continue to be used normally can be distinguished and defined as normal slippage and abnormal slippage. The diaphragm coupling slips frequently, affecting the smooth operation of the wind turbine, or the coupling is damaged and broken, and can not continue to be used normally.
Diaphragm couplings
If there is no visible damage to the diaphragm coupling, and the wind turbine monitoring and wiping system has not reported the fault of mismatch between the torque speed of the output shaft of the gearbox and the torque speed of the generator rotor many times, it can be preliminarily judged to be normal slippage. Make a new displacement marking line for the next observation and use, and restart the wind turbine to generate electricity normally.