초록 ▼

A bucket tip clearance control system forms part of a turbomachinery apparatus including a casing, an outer shroud coupled with the casing, and an inner shroud coupled with the outer shroud. The tip clearance control system includes a flow circuit for a thermal medium defining a flow path within the

A bucket tip clearance control system forms part of a turbomachinery apparatus including a casing, an outer shroud coupled with the casing, and an inner shroud coupled with the outer shroud. The tip clearance control system includes a flow circuit for a thermal medium defining a flow path within the outer shroud. A thermal medium source delivers the thermal medium to the flow circuit in a predefined condition according to operating parameters of the turbomachinery apparatus. The temperature of the outer shroud is controlled according to the predefined condition of the thermal medium. By accurately controlling the temperature of the outer shroud, bucket tip clearance can be controlled and optimized during all of the various operation stages of turbomachinery.

대표청구항 ▼

1. A bucket tip clearance control system that forms part of a turbomachinery apparatus including a casing, an outer shroud coupled with the casing, and an inner shroud coupled with the outer shroud, the outer shroud supporting the inner shroud directly adjacent a bucket tip with a bucket tip clearan

1. A bucket tip clearance control system that forms part of a turbomachinery apparatus including a casing, an outer shroud coupled with the casing, and an inner shroud coupled with the outer shroud, the outer shroud supporting the inner shroud directly adjacent a bucket tip with a bucket tip clearance between them, the tip clearance control system comprising:a flow circuit for a thermal medium, the flow circuit defining an internal flow path within the outer shroud; and a thermal medium source in fluid communication with the flow circuit, the thermal medium source delivering the thermal medium to the flow circuit in a predefined condition according to operating parameters of the turbomachinery apparatus, wherein a temperature of the outer shroud is controlled according to the predefined condition of the thermal medium.