| 摘要 |
<p>The invention is directed to a steam throttle valve which has a number of water injection ducts distributed around the valve axis. The ducts (8) are arranged in a thin-walled manifold arrangement (5) which extends around the valve axis and which has a thin-walled water supply duct (7) housed in a bore in the valve casing cover (6). The manifold (5) is preferably annular in shape and is retained between two assembled parts of the valve, such as the cover (6) and a valve cage (30). …<??>Such an arrangement of the ducts (8) in this way avoids the occurrence of stress cracks around the ducts.</p> |
