Is the safety valve drain pipe designed for normal pressure? ?
Thread Content
It’s like a safety valve: if the reaction vessel experiences excessive pressure, the safety valve activates to release that pressure. However, if the discharge pipe is quite long, it will take some time for the pressure to be released. At that point, the base of the pipe is subject to high pressure. Generally, the discharge pipe of such a safety valve that leads directly to the atmosphere is designed to operate at normal pressure. Is there any problem with this? ?
It cannot be designed for normal pressure; however, for pipelines, 10 bar is no different from normal pressure
It cannot be designed for normal pressure, but ordinary steel pipes at 10 Mpa are generally sufficient
The structure of a safety valve is similar to the throat of an orifice; after gas passes through, the pressure is reduced by roughly half. Some articles have analyzed that the outlet pressure of a safety valve is approximately 0.3 times the inlet pressure. The inlet pressure of the safety valve is 10 Bar, while the outlet pressure can be estimated to be around 3 Bar.
1. The design pressure of the pipeline between the equipment and the safety valve should be consistent with that of the equipment. 2. The discharge pipeline downstream of the safety valve does not necessarily lead to the atmosphere; this depends on your design and the nature of the substance contained. 3. There should be standards defining the design of the pipelines downstream of the safety valve, including matters such as support and the direction of discharge
It cannot be designed under normal pressure; even for pipes that open directly to the atmosphere, the back pressure must be calculated based on the discharge volume and pipe diameter, to determine the maximum back pressure that can build up in the pipe during discharge. The design pressure is then determined based on this value
Then, by definition, this pipe that leads directly to the atmosphere could also be considered a pressure pipeline?