- Westinghouse Service Manuals
- Steam Turbine Design
- Westinghouse Steam Turbine Manual User
- Westinghouse Steam Turbine Manual Model
A steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Charles Parsons in 1884. The steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency from the use of multiple stages in the expansion of the steam, which results. Westinehouse Steam Turbines 20,000 to 35,000 Kw. INSTRUCTION BOOK Westinghouse Electric & Manufacturing Com.pany South Philadelphia Work!! South Philadelphia, Pa. The company changed its name to Westinghouse Electric Corporation in 1945. In 1981, the company began to relocate its division headquarters for the Steam-Turbine Generator Divisions from Pennsylvania (turbines from Lester and generators from Pittsburgh) to Orlando, Florida.
I claim:Westinghouse Service Manuals
1. A valve test system for a steam turbine having at least a throttle valve and a plurality of governor valves for controlling steam admission to the turbine, comprising:
(a) calculator means (70) for generating a plurality of individual governor valve position demand signals;
(b) a plurality of individual valve position control circuits (41) each for governing operation of a respective one of said governor valves in response to a respective input valve position demand signal;
(c) means for supplying a desired total effective valve opening reference signal (72);
(d) means for providing a valve test signal (86);
(e) first means (80) for distributing said reference signal among all of said governor valve position demand signals;
(f) second means (88) for distributing said valve test signal among only selected ones of said governor valve position demand signals;
(g) means for subtracting (82/83) the distributed signals of said second means from those of said first means.
2. Apparatus according to claim 1, which includes:
(a) means for adding (78) said valve test signal to said reference signal whereby said valve test signal is distributed by said first means among all of said governor valve position demand signals.
Steam Turbine Design
- Westinghouse Service Manuals
- Steam Turbine Design
- Westinghouse Steam Turbine Manual User
- Westinghouse Steam Turbine Manual Model
A steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Charles Parsons in 1884. The steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency from the use of multiple stages in the expansion of the steam, which results. Westinehouse Steam Turbines 20,000 to 35,000 Kw. INSTRUCTION BOOK Westinghouse Electric & Manufacturing Com.pany South Philadelphia Work!! South Philadelphia, Pa. The company changed its name to Westinghouse Electric Corporation in 1945. In 1981, the company began to relocate its division headquarters for the Steam-Turbine Generator Divisions from Pennsylvania (turbines from Lester and generators from Pittsburgh) to Orlando, Florida.
I claim:Westinghouse Service Manuals
1. A valve test system for a steam turbine having at least a throttle valve and a plurality of governor valves for controlling steam admission to the turbine, comprising:
(a) calculator means (70) for generating a plurality of individual governor valve position demand signals;
(b) a plurality of individual valve position control circuits (41) each for governing operation of a respective one of said governor valves in response to a respective input valve position demand signal;
(c) means for supplying a desired total effective valve opening reference signal (72);
(d) means for providing a valve test signal (86);
(e) first means (80) for distributing said reference signal among all of said governor valve position demand signals;
(f) second means (88) for distributing said valve test signal among only selected ones of said governor valve position demand signals;
(g) means for subtracting (82/83) the distributed signals of said second means from those of said first means.
2. Apparatus according to claim 1, which includes:
(a) means for adding (78) said valve test signal to said reference signal whereby said valve test signal is distributed by said first means among all of said governor valve position demand signals.
Steam Turbine Design
3. Apparatus according to claim 1 wherein:
(a) said turbine includes a plurality of steam chests (30/31) for delivering steam to said turbine;
(b) each said steam chest having a plurality of governor valves (GV1, GV3, GV5/GV2, GV4, GV6) and only one throttle valve (TV1/TV2).
4. Apparatus according to claim 3 wherein during a valve test process:
(a) the odd numbered governor valves are simultaneously closed while the even numbered governor valves are simultaneously opened.
Westinghouse Steam Turbine Manual User
5. Apparatus according to claim 3 wheren during a valve test process:(a) the odd numbered governor valves are simultaneously opened while the even numbered governor valves are simultaneously closed.
Westinghouse Steam Turbine Manual Model
6. Apparatus according to claim 1 wherein:
(a) said valve test signal is a ramp signal.
7. Apparatus according to claim 1 wherein:
(a) said calculator means is operable to modify the signals provided by said first means to as to compensate for non linear valve characteristics.
8. Apparatus according to claim 1 which includes:
(a) an operator's panel;
(b) means (56/61) on said operator's panel for providing said valve test signal.
