公开(公告)号：US20190218941A1

公开(公告)日：2019-07-18

申请号：US16306272

申请日：2017-07-18

Applicant: DRESSER-RAND COMPANY

Inventor： Randall W. Moll ,  Daniel Flurschutz ,  George M. Lucas

IPC: F01D25/32 ,  F01D9/04 ,  F01D1/04 ,  F01D11/00

Abstract: A drainage system for a stage of a turbine. The drainage system may include at least one annular recess defined in the inner surface of the casing of the turbine and configured to accumulate liquid therein. An axial slot and a radial slot may be formed in a diaphragm of the turbine, the axial slot extending between the upstream and downstream faces of the diaphragm. The drainage system may further include a tubular member including an axially extending tubular portion disposed in the axial slot and a radially extending tubular portion disposed in the radial slot. The radially extending tubular portion may be sized and configured to fluidly couple the at least one annular recess and the axially extending tubular portion, such that liquid in the at least one annular recess may be drained therefrom and discharged from the stage of the turbine via the axially extending tubular portion.

公开(公告)号：US10697329B2

公开(公告)日：2020-06-30

申请号：US16306272

申请日：2017-07-18

Applicant: DRESSER-RAND COMPANY

Inventor： Randall W. Moll ,  Daniel Flurschutz ,  George M. Lucas

IPC: F01D25/32

Abstract: A drainage system for a stage of a turbine. The drainage system may include at least one annular recess defined in the inner surface of the casing of the turbine and configured to accumulate liquid therein. An axial slot and a radial slot may be formed in a diaphragm of the turbine, the axial slot extending between the upstream and downstream faces of the diaphragm. The drainage system may further include a tubular member including an axially extending tubular portion disposed in the axial slot and a radially extending tubular portion disposed in the radial slot. The radially extending tubular portion may be sized and configured to fluidly couple the at least one annular recess and the axially extending tubular portion, such that liquid in the at least one annular recess may be drained therefrom and discharged from the stage of the turbine via the axially extending tubular portion.

公开(公告)号：US20180328210A1

公开(公告)日：2018-11-15

申请号：US15978671

申请日：2018-05-14

Applicant: Dresser-Rand Company

Inventor： Randall W. Moll ,  Silvano R. Saretto ,  Peter Voorhees ,  Richard J. Wiederien

IPC: F01D11/02 ,  F01D25/16 ,  F01D25/26 ,  F01D25/12 ,  F01K25/10

CPC classification number: F01D11/025 ,  F01D25/12 ,  F01D25/162 ,  F01D25/168 ,  F01D25/26 ,  F01K25/103 ,  F05D2220/30

Abstract: An expander may include a longitudinal axis, an inner casing split horizontally along the longitudinal axis, an outer casing split horizontally along the longitudinal axis and spaced radially outward from and encompassing the inner casing. Each axial end of the outer casing may form a respective gland seal housing, and the outer casing and inner casing may define an exhaust chamber therebetween. A plurality of expansion stages including a rotor shaft may be disposed within the inner casing and configured to expand the working fluid received from a working fluid source. A plurality of seals may be disposed within each of the gland seal housings and mounted circumferentially about the rotor shaft. The plurality of seals may include an annular seal, a plurality of dynamically self-adjustable seals disposed outboard of the annular seal, and at least one dry gas seal disposed outboard of the plurality of dynamically self-adjustable seals.