Shroud/clamping Ring (Stator Blade Turbine) Deformation

[engine_puppet]

Hey guys,

i have some problems here, i hope you can share some helpful information.

it's about shroud ring and clamping ring (support ring) for stator turbine blades. These rings have a thermal deformation behavior (ovalisation), thus dent was found on the ring surface (caused by contact between blade pin and the ring).

1. Will it really be a problem to achieve proper clearance during commissioning?

2. Will blade have un-uniform of thermal clearance to shroud ring/stator casing?

3. and how's the effects to the engine?

Thanks
EP

 

[Achy47]

Dear EP,

Thank you for reaching out with your concerns about shroud ring and clamping ring for stator turbine blades. As a scientist in this field, I can provide you with some helpful information to address your questions.

1. During commissioning, it is important to achieve proper clearance between the blade pins and the shroud ring/stator casing. This is necessary to ensure the smooth operation and efficiency of the turbine. If the dent on the ring surface is not addressed, it can potentially lead to further damage and affect the performance of the turbine.

2. The dent on the ring surface can cause uneven thermal clearance between the blade and the shroud ring/stator casing. This can result in uneven heating and cooling of the blades, leading to potential stress and fatigue. It is important to address the dent and achieve proper clearance to ensure uniform thermal behavior of the blades.

3. The effects on the engine can vary depending on the severity of the dent and the resulting clearance. If the dent is not addressed, it can potentially lead to reduced efficiency and performance of the engine. In extreme cases, it can even cause damage to the blades and other components of the turbine.

To address this issue, it is important to carefully inspect and assess the dent on the ring surface and determine the best course of action. This may include repairing or replacing the affected ring, as well as adjusting the clearance between the blade pins and the ring. It is recommended to consult with a qualified engineer or technician to properly address this issue.

I hope this information helps. Please feel free to reach out with any further questions or concerns. Best of luck with your turbine project.