Steam turbine drain structure and method of modifying the same
AssigneeMitsubishi Hitachi Power Systems, Ltd.
InventorsTakumi Shiga, Naoto Kubo
Life of this patent
Estimating the term…
Abstract
A steam turbine drain structure includes a drain pocket for collecting drain water generated in a steam turbine, and a drain hole communicating with the lower side of the drain pocket. The steam turbine drain structure further includes a drain pan arranged below the exit of the drain hole and configured to collect drain water discharged from the drain hole, and a connection pipe one end of which is connected to the bottom portion of the drain pan and the other end of which is connectable to piping laid outside the steam turbine.
Claims6
A drain structure of a steam turbine, comprising:
- a drain pocket defined by part of a stationary assembly accommodating a rotary assembly, the drain pocket extending in a circumferential direction;
- at least one drain hole provided in a lower side portion of the stationary assembly so as to communicate with a lower side of the drain pocket;
- a drain pan arranged below an exit of the at least one drain hole, the drain pan being configured to collect drain water discharged from the at least one drain hole;
- and
- a connection pipe one end of which is connected to a bottom portion of the drain pan and other end of which is connectable to piping laid outside the steam turbine.
A method of modifying a drain structure of a steam turbine,
- the drain structure comprising:
- a drain pocket defined by part of a stationary assembly accommodating a rotary assembly, the drain pocket extending in a circumferential direction;
- and
- at least one drain hole provided in a lower side portion of the stationary assembly so as to communicate with a lower side of the drain pocket, the at least one drain hole being configured to discharge drain water collected in the drain pocket outside the steam turbine,
- the method comprising:
- arranging a drain pan below an exit of the at least one drain hole, the drain pan being configured to collect drain water discharged from the at least one drain hole;
- and
- connecting one end of a connection pipe to a bottom portion of the drain pan, other end of the connection pipe being connectable to piping laid outside the steam turbine.
Dependencies are inferred from the claim text.