No matter what kind of large-scale mechanical equipment it is, minor accidents are bound to occur during operation. Turbine During operation, steam turbines are prone to deformation and leakage—common issues frequently encountered in mechanical equipment. The tightness of the cylinder joint surfaces in a steam turbine directly affects the performance of the entire turbine system. Therefore, it is essential to regularly inspect and maintain these cylinder joint surfaces to ensure they remain highly sealed. When addressing steam leaks at the cylinder joint surfaces, maintenance personnel must carefully analyze the underlying causes of this problem.

　　Everyone knows. Turbine Its cylinders are cast from steel, and after leaving the factory, they typically require a certain amount of post-processing. Specifically, they are first stored within the factory for a period of time, allowing any internal stresses generated during the casting process to dissipate fully before they can be put into service. If this stress-relief process is too brief, the cylinders—once machined—will inevitably deform during operation. This is precisely why some steam turbines, even after leak repairs have been carried out, continue to experience such deformation during subsequent operation, as the affected area keeps on deforming steadily. In general, during operation, the internal stress conditions in certain components of a steam turbine are quite complex. Besides being subjected to pressure differences caused by the gas flow, these components also bear the weight of their own parts. Moreover, they must withstand the reaction forces exerted by the steam as it flows through the system, as well as the forces induced by the connecting pipes under varying temperature conditions—both hot and cold. Under these circumstances, exposed to such diverse forces, the turbine cylinders become highly susceptible to deformation, which in turn can lead to leaks.

　　During installation or maintenance, some equipment—due to issues with maintenance procedures and inherent technical problems—often results in... Turbine The expansion gaps between its inner rod, partition sleeve, air-seal sleeve, and cylinder partition are either inappropriate or the dimensions of the parts used do not conform to specifications. As a result, during operation, a significant expansion force often develops, causing deformation of the steam turbine. In addition to these reasons, it’s also possible that the turbine’s material does not meet the required standards. Generally speaking, the tightness of the steam turbine’s mating surfaces relies primarily on the clamping force provided by the bolts. Therefore, if these bolts become loose, it will lead to insufficient stress, causing the material to elongate and deform.