Selection of safety valves
Thread Content
I would like to ask the experts: Our factory’s pressure pipelines require safety valves. The nominal diameter of the pipelines is DN200, and the pressure is 1.6 MPa. What model of safety valve should be used, and what should be its diameter?
1. Simple approach: Provide the interface dimensions and process parameters to the supplier, who will then carry out the calculations and select the appropriate materials. 2. Complex approach: One must carry out the calculations based on standards, which requires specialized knowledge
To analyze it properly, it’s necessary to know relevant information such as the flow rate during pressure release, operating temperature, pressure, and the contents involved...
Safety valves should be calculated based on the flow rate of the medium in the pipeline equipment, operating temperature and pressure, properties of the medium, and the required safety discharge volume, in order to select the appropriate specifications and models for the safety valves.
For example, if the nominal diameter of this pipeline is DN200 and the pressure is 1.6 MPa, the pressure setting for the safety valve should be around 2 MPa; the specific model can be chosen based on the dimensions of the pipeline.
No way, for example, if I have a pipe with a capacity of 1000, do I have to use a valve with a capacity of 1000 as well?
It is difficult to estimate the flow rate of the medium, as there is no flow meter. As for temperature, the highest temperature in summer is estimated to be 40 degrees. The medium consists of oxygen, nitrogen, and argon. I have calculated the leakage volume based on the design manual, and after rounding, the diameter was determined to be 80. Since I have no prior experience with selecting safety valves, I am not sure whether this choice is appropriate. . . Are there any professional calculation software available for verification?
The nominal diameter of the pipe and the size of the valve outlet are two different things; the parameter that determines the suitability of a safety valve is pressure. The size of the valve outlet should match the size of the pipeline on which the safety valve is to be installed, and there are standards governing this design.
For the emission levels, the manufacturer will do the calculations