Condenser vacuum retaining apparatus for steam power plant
AssigneeHitachi, Ltd.
InventorsKatsumi Ura, Taiji Inui, Kenji Sakka
Life of this patent
Estimating the term…
Abstract
A vacuum retaining arrangement for retaining a vacuum within a condenser of a steam power plant during a short term outage or shutdown. At least a portion of a turbine gland packing near the condenser, with respect to a sealing steam supply portion, is connected and communicated with an air extractor through a gland condenser. The sealing steam which would otherwise flow into the condenser from the turbine gland package is suctioned or extracted from the gland packing into the gland condenser and the air extractor during the short term outage or shutdown so as to prevent the sealing steam from leaking into the condenser.
Claims14
A vacuum retaining arrangement for a steam power plant including a turbine means, a condenser means associated with said turbine means, means for extracting air from said condenser means, a gland packing means for enabling a forming of a steam seal for the turbine means, and first gland condenser means communicating with the gland packing means at a position spaced outwardly from a steam inlet port means for supplying the sealing steam to said gland packing means so as to enable steam extracted from said gland packing means to be supplied to said first gland condenser means to prevent a leaking of the sealing steam into atmosphere, the vacuum retaining arrangement comprising means connected to the gland packing means at a position near the condenser means for receiving sealing stream from said gland packing means, means for connecting said means for receiving to said means for extracting air from said condenser means for extracting the sealing steam from said gland packing means, and second gland condenser means interposed between said means for receiving and said means for extracting air from said condenser means for enabling steam extracted from said gland packing means to be supplied into said second gland condenser means to prevent a leaking of the sealing steam into said condenser means associated with said turbine means.
A vacuum retaining arrangement for a steam power plant including a turbine means, a condenser means associated with said turbine means, a gland packing means for enabling a forming of a steam seal for the turbine means, and first gland condenser means communicating with the gland packing means at a position spaced outwardly from a steam inlet port means for supplying the sealing steam to said gland packing means so as to enable steam extracted from said gland packing means to be supplied to said first gland condenser means to prevent a leaking of the sealing steam into atmosphere, the vacuum retaining arrangement comprising means connected to the gland packing means at a position near the condenser means for receiving sealing steam from said gland packing means, means connected to said means for receiving for extracting the sealing steam from said gland packing means, and second gland condenser means interposed between said means for receiving and said means for extracting for enabling steam extracted from said gland packing means to be supplied into said second gland condenser means to prevent a leaking of the sealing steam into said condenser means associated with said turbine means, and further comprising means for supplying a condensate from the condenser means associated with the turbine means to said second gland condenser means.
A vacuum retaining arrangement for a steam power plant including a turbine means, a condenser means associated with said turbine means, a gland packing means for enabling a forming of a steam seal for the turbine means, and first gland condenser means communicating with the gland packing means at a position spaced outwardly from a steam inlet port means for supplying the sealing steam to said gland packing means so as to enable steam extracted from said gland packing means to be supplied to said first gland condenser means to prevent a leaking of the sealing steam into the atmosphere, the vacuum retaining arrangement comprising means connected to the gland packing means at a position spaced inwardly from said steam inlet port means and near the condenser means for receiving sealing steam from said gland packing means, means connected to said means for receiving for extracting the sealing steam from said gland packing means, and second gland condenser means interposed between said means for receiving and said means for extracting for enabling steam extracted from said gland packing means to be supplied into said second gland condensor means to prevent a leaking of the sealing steam into said condenser means associated with said turbine means.
Dependencies are inferred from the claim text.