Double-Container Gas Fuel Control Valve: Numerical Analysis and Operating Conditions

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ZIRAK S.; SEIFI M.; RAMESH A.

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Journal Paper

Paper Information

Journal: JOURNAL OF APPLIED FLUID MECHANICS (JAFM) Year:2020 | Volume:13 | Issue:1 Page(s): 211-219

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Information Journal Paper

Title

Double-Container Gas Fuel Control Valve: Numerical Analysis and Operating Conditions

Author(s)

ZIRAK S. | SEIFI M. | RAMESH A. | Issue Writer Certificate

Keywords

Double-container

Control valve

Gas turbine

Gas fuel

Numerical analysis

Operating conditions

Abstract

Flow behavior through a Gas turbine Double-container fuel valve is numerically studied. Normally the Gas fuel supply pressure of the Gas turbine sites is over 20+ barg while the combustion chamber pressure is around 12 barg in base load operation and slightly more than atmospheric during start-up. Therefore, the flow control through this high range of pressure ratios is a very difficult and costly task with a single-container Control valve. The Double-container valve is an innovative design which consists of two parts, SRV (Stop Ratio Valve) followed by GCV (Gas Control valve), in a compact unit. SRV maintains a significantly low pressure upstream of the GCV during Gas turbine firing to establish flame and control fuel flow during acceleration. It opens the GCV to a position where it is much easier to control the flow through the valve. The same situation exists in base load operation when the turbine load is changing. The obtained results prove the special design of the valve to maintain linear characteristics of flow with stroke position in GCV. The results of the mass flow are given for various GCV stroke openings at various valve pressure ratios. Also, the range of pressure ratios for a proper operation of GCV is determined. SRV regulates the middle pressure between the two parts based on rotor speed. Therefore, a sensitive combination of globes position takes place during Gas turbine operation.

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APA: Copy

ZIRAK, S., SEIFI, M., & RAMESH, A.. (2020). Double-Container Gas Fuel Control Valve: Numerical Analysis and Operating Conditions. JOURNAL OF APPLIED FLUID MECHANICS (JAFM), 13(1), 211-219. SID. https://sid.ir/paper/308345/en

Vancouver: Copy

ZIRAK S., SEIFI M., RAMESH A.. Double-Container Gas Fuel Control Valve: Numerical Analysis and Operating Conditions. JOURNAL OF APPLIED FLUID MECHANICS (JAFM)[Internet]. 2020;13(1):211-219. Available from: https://sid.ir/paper/308345/en

IEEE: Copy

S. ZIRAK, M. SEIFI, and A. RAMESH, “Double-Container Gas Fuel Control Valve: Numerical Analysis and Operating Conditions,” JOURNAL OF APPLIED FLUID MECHANICS (JAFM), vol. 13, no. 1, pp. 211–219, 2020, [Online]. Available: https://sid.ir/paper/308345/en

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