Method of indicating sealing steam temperature and related apparatus
AssigneeGeneral Electric Company
InventorNicholas Tisenchek
Life of this patent
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Abstract
A method of obtaining sealing steam temperature readings in a steam turbine where steam is used to seal turbine shaft ends includes (a) supplying pressurized sealing steam through a supply pipe to a steam seal header that, in turn, distributes the sealing steam to the shaft ends, respectively; (b) measuring temperature of the pressurized sealing steam at a location immediately adjacent at least one shaft end, downstream of the supply pipe; and (c) using temperature measurements from step (b) to insure that the pressurized sealing steam is within a predetermined acceptable range.
Claims13
A method of obtaining sealing steam temperature readings in a steam turbine where steam is used to seal turbine shaft ends comprising:
- (a) supplying pressurized sealing steam through a supply pipe to a steam seal header that, in turn, distributes the sealing steam to said shaft ends, respectively;
- (b) measuring temperature of the pressurized sealing steam at a location immediately adjacent at least one said shaft ends, downstream of said supply pipe;
- and
- (c) using temperature measurements from step (b) to insure that said pressurized sealing steam is within a predetermined acceptable range.
A method of obtaining sealing steam temperature readings in a steam turbine where steam is used to seal at least one turbine shaft end comprising:
- (a) supplying pressurized sealing steam through a supply pipe to a steam seal header that, in turn, distributes the sealing steam to said shaft ends, respectively;
- (b) measuring temperature of the pressurized sealing steam at a location immediately adjacent at least one of said shaft ends, downstream of said supply pipe;
- and
- (c) using temperature measurements from step (b) to insure that said pressurized sealing steam is within a predetermined acceptable range;
- wherein said predetermined acceptable range is between 300 and 700° F.;
- and
- wherein said at least one shaft end is enclosed in a low pressure exhaust packing box.
A steam seal system for sealing opposite ends of a steam turbine shaft, comprising a seal steam supply pipe;
- a seal steam header that receives seal steam from said seal steam supply pipe;
- a plurality of additional supply pipes for supplying seal steam from said header to a plurality of packing boxes enclosing portions of said shaft;
- and a seal steam temperature sensor located, in one of said plurality of distribution pipes, downstream of said seal steam supply pipe.
Dependencies are inferred from the claim text.