Investigating Structural Response of Pressure Reducing Valve of Supercritical Steam Generator System Under Cyclic Moments, Thermal Transient, and Pressure Loadings

2021 ◽  
Author(s):  
Antony Hurst ◽  
Nak-Kyun Cho ◽  
Pavitra Bansal ◽  
Tom Hurst
Keyword(s):  
Steam Generator ◽  
Structural Response ◽  
Generator System ◽  
Thermal Transient ◽  
Pressure Reducing Valve

Predicting Steam Generator Auxiliary Feedwater Nozzle Thermal Stratification Transients and Fatigue Effects in Complex Systems

2005 ◽  
Author(s):  
E. L. Cranford ◽  
M. A. Gray ◽  
S. Sahgal
Keyword(s):  
Steam Generator ◽  
Thermal Stratification ◽  
Transient Characteristics ◽  
Thermal Transients ◽  
Fatigue Monitoring ◽  
Interacting Systems ◽  
Thermal Transient ◽  
Related Stress ◽  
Evaluation And Monitoring ◽  
System Characteristics

External thermocouple measurements on auxiliary feedwater piping revealed thermal transient cycles that warranted evaluation and monitoring. Development of a fatigue monitoring system for the associated steam generator auxiliary feedwater nozzles required consideration of a number of complex factors. The thermal transients measured on the external surface often indicated the presence of thermal stratification cycling of the contained fluids. The characteristics of the transients were influenced by complex combinations of the thermal hydraulic influence of four interacting systems. The transient characteristics were found to be very sensitive to small changes in the system parameters. This paper describes methods used to simulate these complex system characteristics and obtain reasonable predictions of local thermal transient characteristics that correlate with the measured data. The predicted transient loads are used to calculate the related stress and fatigue impact in the nozzles.

scholarly journals Numerical simulation of gas flow and droplet motion in a wave-plate eliminator of the separator-steam-generator system in the waste-heat-utilisation complex

2017 ◽  
Vol 159 ◽  
pp. 00002
Author(s):  
Valerij Artemov ◽  
Konstantin Minko ◽  
Georgij Yankov ◽  
Anton Ptakhin ◽  
Anton Kondratev ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Steam Generator ◽  
Gas Flow ◽  
Waste Heat ◽  
Generator System ◽  
Droplet Motion ◽  
Wave Plate

Fuel Controller Design in a Once-Through Subcritical Steam Generator System

1978 ◽  
Vol 100 (1) ◽  
pp. 189-196 ◽  
Author(s):  
Yu-Hwan Lin ◽  
R. S. Nielsen ◽  
A. Ray
Keyword(s):  
Steam Generator ◽  
Controller Design ◽  
Rate Of Change ◽  
Normal Operation ◽  
Generator System ◽  
Stable Operating ◽  
Operating Level ◽  
Flash Tank ◽  
Load Rate ◽  
Power Generation System

Established techniques have been applied for modeling a once-through subcritical steam generator in an oil-fired 386 MW(e) power generation system. The model was used to design a fuel controller which was implemented in the actual plant. The resulting minimum stable operating level of the system has been reduced from 220 MW(e) to flash tank level of 130 MW(e), and the customary load rate-of-change during normal operation improved from approximately 2 MW/min to 9 MW/min.

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