Claims
- 1. A turbine engine comprising a variable area restrictor at the stator vane inner shroud for supplying additional cooling flow, wherein the supply pressure remains at a substantially constant value when the additional cooling flow is supplied, wherein the inner shroud comprises an inlet and an outlet for a gas flow, the variable area restrictor comprising:
- a housing connected to the inlet, the housing having a housing port in communication with the outlet;
- an adjustable inner section connected to the housing;
- a piston disposed around the inner section and having a distal end disposed a variable distance between the inlet and the housing; and
- a spring disposed between the piston and the inner section, whereby, when the pressure at the inlet reaches a pre-determined level, the piston moves and creates a greater area, thereby reducing the pressure and increasing the flow.
- 2. The turbine engine of claim 1, wherein the inner section of the variable area restrictor is threaded and cooperates with threads on the housing.
Parent Case Info
This is a division of application Ser. No. 08/544,348 filed Oct. 17, 1995, now U.S. Pat. No. 5,636,659.
The present invention relates to turbomachinery and in particular to turbine engines. More particularly, the present invention relates to methods and apparatus of regulating the flow of gases through the turbine blades themselves, after combustion.
US Referenced Citations (19)
Foreign Referenced Citations (8)
Number |
Date |
Country |
2590320 |
May 1987 |
FRX |
4343560 |
Jun 1995 |
DEX |
2015085 |
Sep 1979 |
GBX |
2046363 |
Nov 1980 |
GBX |
2093532 |
Sep 1982 |
GBX |
2170865 |
Aug 1986 |
GBX |
2175048 |
Nov 1986 |
GBX |
8701763 |
Mar 1987 |
WOX |
Non-Patent Literature Citations (1)
Entry |
Gerard Marie, "L'hydraulique pratique commentee". Chapter 13, pp. 119-120. |
Divisions (1)
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Number |
Date |
Country |
Parent |
544348 |
Oct 1995 |
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