| 摘要 |
<p>An impeller shaft (64) assembly includes a contoured spacer body (200). The contoured spacer body includes a front face (202), a rear face (204), a recessed spring bearing surface (234) in its rear face, and a spring spacing abutment (220) including a shoulder that is seated against a protective washer (120). The contoured spacer body functions to prevent the headed front end of a fastener from coming into direct contact with a spring assembly and protective washer. The protective washer and spring assembly are sized to fit the rear face of the contoured spacer body, which in turn is sized to fit the front face of a first stage impeller. The contoured spacer body ensures that the clamp load is dissipated across the front face of the first stage impeller. The contoured spacer body also provides greater protection to the first stage impeller during installation and maintenance.</p> |
