How should the field for \"actual discharge area of the discharge device\" in the safety valve calculation for SW6 be filled in?
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I need the calculation formula and the basis for it; thank you all.
Drop one size down; for example, a pipe connection of DN50 is calculated as DN32, with a discharge area of 804
Generally, the area is calculated by reducing the size by two grades; that is, for DN150, which is equivalent to 100, the area is 50x50π
For air media, the nominal diameter of the safety valve inlet is generally two sizes smaller than that of the equipment’s inlet pipe. For example, if the equipment’s inlet has a DN50 diameter, then a DN32 safety valve is usually sufficient. For other media, a simple calculation will suffice; the principle remains the same. In most cases, the safety valve’s diameter is just one size smaller than that of the inlet pipe. The safety valve also has a throat diameter, which is generally one size smaller than the valve’s nominal diameter.
Check the sample of the safety valve to find the throat diameter; it is generally one size smaller than that of the safety valve.
Actually, you need to ask the manufacturer; if you press the button, it will shift up a gear directly. What was said upstairs makes sense
Ask the manufacturer of the safety valve for a sample; samples of safety valves usually come with
The actual discharge area of a safety valve is the area calculated based on the throat diameter of the valve
Generally, the calculation is done by using two lower sizes, and then the area can be determined using the formula for the area of a circle. Since the unit for area is also mm, there is no need for unit conversion. For example, DN50 is calculated as if it were DN32; the result is approximately 16X16X3.1415926 = 804