Self-acting control valve or flow-limiting orifice plate?
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There is a pipeline (a pipeline that is not used frequently) that runs from the pump to a low-pressure storage tank. The normal outlet pressure of the pump is 4.0 MPa, while the pressure in the low-pressure storage tank is 0.55 MPa. The original design called for a DN50 pipeline equipped with a local pressure gauge, a flow-limiting orifice plate, and another local pressure gauge in sequence. Is this a reasonable arrangement? Is it more appropriate to use a self-acting pressure control valve to achieve a pressure drop? Throttling orifice plates can create a pressure drop; multiple stages of orifice plates are required ； From an economic perspective, the flow-limiting orifice plate is much cheaper. Dear sea friends, please analyze which design is more suitable?
I’m familiar with control valves, but not much about orifice plates. If your pipeline diameter is 50, the cost of the control valve should not be too high – it won’t exceed 8,000
It is more reasonable to use multi-stage current-limiting control boards. The reason is that the pressure difference before and after is relatively large; if a self-acting valve is used, its opening degree may be small, which can easily lead to cavitation. It’s just a hasty conclusion; no calculations were done. It’s necessary to know what the medium is and the operating temperature, etc., in order to carry out the calculation
Medium: chlorosilane (75% silicon tetrachloride, 25% silicon trichlorohydride by volume). Temperature: 35°C.