Analysis of the Discharge Coefficient of a Spring Loaded Pressure Relief Valves during Its Dynamic Behavior

نویسندگان

  • A. J. Ortega
  • B. N. Azevedo
چکیده

Direct acting spring loaded pressure relief valve is one of the most important devices to ensure security to pipeline oil transport. However, relief valves’ manufactures generally only provide information on valve characteristics under full opening stage, which is obtained under steady state regime, therefore, valve and flow’s transient behavior are neglected. Understanding the transient behavior of relief valves is crucial because critical conditions may be attained, damaging the pipeline. In order to overcome this lack of information, a direct acting spring loaded pressure relief valve’s computational model was developed. A simplified two dimension model was built based on the valve geometrical and constructive characteristics. Further, a dynamic equation, which defines the valve disc position, was implemented. From the solution of the transient form of the conservation equations, the velocity and pressure distributions were obtained, allowing the determination of the discharge coefficient versus valve opening under its transient state. Comparisons with one-dimensional integral approach model were performed to evaluate the model.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Dynamic Analysis of Hydraulic Pressure of Relief valve

AbstractPressure relief valve is one of the most important devices used on the security of pipelines, since it is responsible to guarantee the integrity of the installations. Generally, the response and behaviour of a relief valve during its transient is unknown by users, who employ simplified and static analysis to design the pipeline, further, the information provided by manufactures is limit...

متن کامل

A Numerical Model about the Dynamic Behavior of a Pressure Relief Valve

Pressure relief valve is one of the most important devices used on the security of pipelines, since it is responsible to guarantee the integrity of the installations. Generally, the response and behavior of a relief valve during its transient is unknown by users, who employ simplified and static analysis to design the pipeline, further, the information provided by manufactures is limited. In th...

متن کامل

Analysis of Khorramabad Motahari Karstic Springhead (Sarab) Recession Curve Based on Recession Coefficient during Hydro-Climatic Fluctuations

The hydrographic specifications of the karstic spring and the recession coefficient can reflect the hydro-climatic fluctuations and physical and geological characteristics of the aquifer system recharging the spring. In this study, in order to identify the hydrological geological behavior of Khorramabad Motahhari karstic Springhead (Sarab) during hydro-climatic fluctuations, quantitative analys...

متن کامل

Nonlinear Dynamic Modeling and Hysteresis Analysis of Aerospace Hydro - dynamical Control Valves

A new procedure for deriving nonlinear mathematical modeling for a specific class of aerospace hydro - mechanical control valves is presented. The effects of friction on the dynamic behavior of these types of valves along with the experimental verifictions are also given. The modeling approach is based on the combination of the following three tasks: decomposition of the valve into simple speci...

متن کامل

Analysis of synoptic - dynamic weather Changes spring precipitation Comprehensive Iran

Introduction: The main feature of Iran's rainfall is their variability; in fact, changes in rainfall are due to changes in their producing factors. The study of rainfall changes in the country showed that the spatial variations of precipitation from west to east and north to south decreased and these changes are well-coordinated with Iran's major rough nesses. The highest rainfall of the southe...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009