What Is Design Pressure?

The design pressure refers to the maximum pressure at the top of the pressure vessel, which is used as the design load condition together with the corresponding design temperature, and its value must not be lower than the working pressure. In actual calculation, the corresponding design pressure can be determined in accordance with relevant regulations such as the Pressure Vessel Safety Technical Supervision Regulations.

design pressure

Right!

Design pressure refers to the set

When the container is equipped with a safety valve

Considering the lag of the opening action of the safety valve, the pressure of the container cannot be released in time, and the design pressure must not be lower than the opening pressure of the safety valve. Equal to (1.05 ~ 1.1) times the working pressure of the container]. ^[1]

For containers with liquefied gas and no cooling facilities, the pressure of the container is closely related to the critical temperature and working temperature of the medium, so its design pressure should not be lower than the saturated vapor pressure of the liquefied gas at 50 ; For a petroleum gas container, the saturated steam pressure at 50 ° C of its relevant components is taken as the design pressure. ^[1]