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US Patent 4802821 - Axial flow turbine
US Patent Issued on February 7, 1989
Estimated Patent Expiration Date:
September 21, 2007Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
September 21, 2007Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractIn an axial flow gas turbine with reaction blading, whose outlet rotor blades (14) are followed by a diffuser with axial outlet into an exhaust gas pipe (13), the kink angles of the diffuser inlet both at the hub (10) and at the cylinder (9) are fixed exclusively for the purpose of evening out the energy profile over the duct height at the outlet from the last rotor blade row in order to shorten the diffuser system and to optimise it in part load operation. In addition, a mechanism provided to remove swirl from the swirling flow in the form of profile ribs (17). Where the outlet rotor blades have a high Mach number flow, which leads to a large opening angle of the blading, the diffuser is subdivided into several partial diffusers (16) via sheet metal guides (15). | InventorApplicationNo. 07/099020 filed on 09/21/1987US Classes:415/208.2, Plural and arcuately or circularly arranged in radial plane around runner axis415/211.2, Downstream of runner415/914DEVICE TO CONTROL BOUNDARY LAYERField of Search415/207Pump outlet or casing portion expands in downstream directionExaminersPrimary: Garrett, Robert E.Assistant: Pitko, Joseph M. Attorney, Agent or FirmUS Patent References2538739, 2828939, 2844001, 3552877, 4013378, Axial flow turbine exhaust hoodIssued on: 03/22/1977 Inventor: Herzog4214452, Exhaust device for a condensable-fluid axial-flow turbine Issued on: 07/29/1980 Inventor: Riollet , et al.4391566Diffuser and exhaust gas collector arrangement Issued on: 07/05/1983 Inventor: Takamura International ClassesF01D 25/00 (20060101)F01D 25/30 (20060101) Foreign Application Priority Data1986-09-26 CH |
