Condensing turbine having at least two seals for sealing off the

Details Condensing turbine having at least two seals for sealing off the Condensing turbine having at least two seals for sealing off the

1995-06-28

1996-11-26

Look, Edward K.

Rotary kinetic fluid motors or pumps

With shaft connected fluid force subjected thrust balancing...

In separate chamber having non-system fluid inlet

415106, 415107, 415112, 415113, 415 26, 415 47, 415118, 415231, F01D 302, F01D 304

Patent

active

055778852

ABSTRACT:
A condensing turbine includes a live-steam inlet, an exhaust-steam outlet and at least two seals for sealing off a turbine casing in the region of a turbine shaft carrying a turbine rotor. At least one of the seals is disposed on the live-steam side and one of the seals is disposed on the exhaust-steam side. The overall construction is substantially simplified by constructing at least one respective seal as a gas-lubricated mechanical surface seal on both the live-steam side and the exhaust-steam side. The outermost mechanical surface seals in each case on the live-steam side and the exhaust-steam side seal off separate seal spaces which are acted upon through a balancing line by an identical vacuum lying below the outer atmospheric pressure. These mechanical surface seals are constructed and fitted in such a way that a flow which is necessary for gas lubrication can occur through the mechanical surface seals from the outer atmosphere into the interior of the casing.

REFERENCES:
patent: 3392983 (1968-07-01), Hajner
patent: 4557664 (1985-12-01), Tuttle et al.
patent: 4993917 (1991-02-01), Kulle et al.
patent: 5375853 (1994-12-01), Wasser et al.

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