Study on the design of ball valve based on elastic ring valve seat structure and fluid characteristics and fatigue strength

Hydraulic Characterization of a Check Valve for Low-Pressure Potable Water Distribution Applications

“…Figure 1 proposes a scheme to measure the loss coefficient of the check valve considering the approach of similar studies to evaluate this characteristic in valves of another type or hydraulic accessories for the control and transport of fluids [17,23,29]. Considering that the flow circulates between points 1 and 2, the hydraulic energy loss that the fluid current would have in that area is h…”

“…In their conclusions, they highlighted the inverse relationship between the valve pressure drop and the loss coefficient of this device. Yu et al [23] used theoretical-experimental studies to characterize and improve the behavior of a ball valve considering the hydraulic and structural aspects of the component. Regarding its pressure drop, a decrease in this indicator was observed as the percentage of opening in the ball valve increased.…”

Моделирование Показателей Качества Большого Шарового Крана, Предназначенного Для Газопроводов

“…Инженер-механик должен предложить целостное решение, отвечающее всем этим проблемам, а также особым требованиям бенефициаров. Например, стандарт рекомендует использовать сталь типа A350 LF2 для корпусов клапанов и металлических уплотнительных компонентов (т. е. шара и седел) шаровых кранов, применяемых в газопроводах [2,3], но когда почва вокруг подземного трубопровода содержит соленые углеводороды, потребители предпочитают в качестве материала нержавеющую сталь.…”