Orifice plates

摘要

Implementations of an orifice plate used to regulate flow through a conduit are provided. In some implementations, a balanced restriction orifice (BRO) plate configured to maximize pressure loss is provided. In some implementations, the BRO plate may be configured to limit pipe and plate noise, erosion, cavitation, shear stress, etc. while maximizing pressure loss, and limiting flow to required values. In some implementations, openings through a BRO plate may be configured to satisfy the Velocity-Head Pressure-Loss equation: ΔP=kρVn/2Gc.

主权项

1. A restriction orifice plate comprising:
a plate configured to be positioned in a conduit through which a fluid passes, wherein the plate includes two or more openings therethrough that are positioned on the plate to induce a pressure loss of a fluid passing therethrough; each of the two or more openings include an inlet and an outlet, the inlets of the two or more openings are the same diameter and the outlets of the two or more openings are the same diameter; wherein the two or more openings are positioned on the plate to satisfy the flow-based relationship, KρAVN=Constant, so that N=0 as a fluid passes through the two or more openings, where,
K=constant;ρ=fluid density; A=area of the two or more openings;V=fluid velocity;N=velocity exponent; and wherein the two or more openings of the plate are configured to equally satisfy the relationship, ΔP=kρVn/2Gc, where,
ΔP=pressure loss across the plate;n=velocity exponent;k=velocity head loss;ρ=fluid density;V=fluid velocity; andGc=Newton's conversion constant.