Heat shield for pressure casing

US10208768B2 · kind B2 · utility

Assignee

• DRESSER-RAND COMPANY · US

Inventors

• David J. Peer · Olean, US
• David Andrew Taylor · Issaquah, US
• Brian David Massey · Seattle, US
• Kirk Ryan Lupkes · Issaquah, US
• Scott David Wisler · Olean, US
• James M. Sorokes · Olean, US
• Mark J. Kuzdzal · Allegany, US

Key dates

• Filing date: Mar 21, 2016
• Grant date: Feb 19, 2019
• Expiry date: Dec 30, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A compressor may include a casing defining a discharge cavity and a seal cavity. A rotary shaft may be disposed in the casing, and a shaft seal assembly may be disposed in the seal cavity and about the rotary shaft. An impeller may be coupled with and configured to be driven by the rotary shaft. A balance piston may be integral with the impeller and may define the discharge cavity and the seal cavity. A balance piston seal may be disposed about the balance piston such that the balance piston seal and the balance piston define a radial clearance therebetween. The radial clearance may be configured to provide fluid communication from the impeller to the discharge cavity. A heat shield may be disposed in the discharge cavity, and may be configured to prevent the conduction of heat from the discharge cavity to the seal cavity via the casing.