Desuperheater seat-ring apparatus
AssigneeSPX Corporation
InventorsDavid Ristau, Veaceslav Ignatan
Life of this patent
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Abstract
The present invention relates to an apparatus and method of deploying a desuperheater with a Seat-Ring designed to provide coolant injection at high temperature differential. The present invention's robust design provides for a high level of flexibility that allows operating at high temperature differentials between the coolant and the superheated fluid. The desuperheater Seat-Ring is made as a split hollow ring with a perpendicular slit traversing the ring's circumference. The opened slit design provides a high level of flexibility, which allows the seat ring to sustain severe temperature extremes by reducing thermal stress. The coolant is supplied to the seat ring through a specially designed coolant nipple liner connected to the seat-ring.
Claims13
A desuperheating device for in-line operation in conjunction with superheated fluid piping upstream and downstream therefrom and of type comprising:
- an upper housing section and a lower housing section joined with a middle housing chamber of enlarged diameter relative to the upstream and downstream piping to form a mixing chamber of enlarged diameter relative to the upstream and downstream piping, wherein said joined housing sections being adapted for connection to said upstream and downstream piping;
- a desuperheater seat ring support fixed in said middle housing and supporting therewith an annular seat injection ring with a slot and said annular seat injection ring being adapted for connection to a cooling fluid inlet piping to supply a cooling fluid to said annular seat injection ring;
- and
- a valve plug slideably received in the axially disposed valve cage base structure to cooperate with said slot of said annular seat injection.
The method for cooling a superheated fluid with a desuperheater device, comprising:
- receiving at a lower housing section of a desuperheater device said superheated fluid;
- flowing said superheated fluid though a variable orifice in a middle housing chamber of said desuperheater device;
- delivering a cooling liquid into said middle housing chamber in a substantially circular pattern;
- mixing said superheated fluid and said cooling liquid in said middle housing chamber to produce a desuperheated fluid;
- and
- flowing said desuperheated fluid out of said desuperheater device through an upper housing section.
The means for cooling a superheated fluid with a desuperheater device, comprising:
- means for receiving at a lower housing section of a desuperheater device said superheated fluid;
- means for flowing said superheated fluid though a variable orifice in a middle housing chamber of said desuperheater device;
- means for delivering a cooling liquid into said middle housing chamber in a substantially circular pattern;
- means for mixing said superheated fluid and said cooling liquid in said middle housing chamber to produce a desuperheated fluid;
- and
- means for flowing said desuperheated fluid out of said desuperheater device through an upper housing section.
Dependencies are inferred from the claim text.