RICHARD W FOSTER-PEGG
Engineers in West Chester, PA
License number
Pennsylvania PE000258K
Category
Engineers
Type
Professional Engineer
Address
Address
West Chester, PA 19380
Professional information
Indirectly Heated Gas Turbine Control System
US Patent:
6748743, Jun 15, 2004
Filed:
Jul 3, 2002
Appl. No.:
10/188480
Inventors:
Richard W. Foster-Pegg - West Chester PA 19380
International Classification:
F01K 2106
US Classification:
60646, 60657, 60660, 60661, 60666, 137 6819, 137 683
Abstract:
A system for the control of an indirectly heated gas turbine comprising a primary system of controlling the temperature of heated compressed gas entering the expander, and an independent secondary system which includes a safety valve for instantaneous release of heated compressed gas to the atmosphere. The primary system controls system gas temperature and power output by modulating a flow of unheated compressed gas which bypasses the heat exchanger and mixes with the heated gas leaving the heat exchanger to produce a lower temperature gas entering the expander. The secondary system provides a backup means of overspeed prevention, and includes a safety valve to instantly discharge to the atmosphere hot compressed gas upstream of the expander by being responsive to the speed of the turbine. The safety valve includes a frangible membrane clamped between parallel flanges within the ducting, and further includes a dagger assembly for rupturing the membrane.
Indirectly Heated Gas Turbine Control System
US Patent:
6938421, Sep 6, 2005
Filed:
Apr 19, 2004
Appl. No.:
10/827876
Inventors:
Richard W. Foster-Pegg - West Chester PA, US
International Classification:
F01B031/00, F01K019/00, F01K021/06, F16K017/14, F16K017/40
US Classification:
60646, 60657, 60660, 60682
Abstract:
A system for the control of an indirectly heated gas turbine comprising a primary system of controlling the temperature of heated compressed gas entering the expander, and an independent secondary system which includes a safety valve for instantaneous release of heated compressed gas to the atmosphere. The primary system controls system gas temperature and power output by modulating a flow of unheated compressed gas which bypasses the heat exchanger and mixes with the heated gas leaving the heat exchanger to produce a lower temperature gas entering the expander. The secondary system provides a backup means of overspeed prevention, and includes a safety valve to instantly discharge to the atmosphere hot compressed gas upstream of the expander by being responsive to the speed of the turbine. The safety valve includes a frangible membrane clamped between parallel flanges within the ducting, and further includes a dagger assembly for rupturing the membrane.