Do you know the regulation principle of balancing valves？

    Regulation principle

    Balancing valve throttling element is equivalent to a local resistance to change, the non compressible fluid, the flow equations can be obtained:

     Type: before the pressure drag coefficient P1 ξ - flow balance valveQ - flow through the balance valve - valv

P2 - F - valve after the pressure balance valve pipe cross-sectional area of ρ - fluid densit

From the formula can be seen, when F (i.e. the balance valve on amodel), the valve before and after the pressure drop at constant P1-P2, flow rate of Q is only affected by balancing valve resistancechange. Zengda (valve off hours), Q decreases; conversely, ξ(valve opening decreases when increasing), Q. Balance valve is to change the drag coefficient to opening change the valve, to achieve the purpose of regulating traffic.

gears and racks

     Static balance valve occasions

    Static balancing valve operation is complex, conditioned to be equipped with smart meters, even with professional and technical personnel of the coupling phenomenon of user traffic is also verydifficult to make the user To achieve a state of equilibrium. The valve and valve KV valuecurve to determine the valve opening of the static balance valve is a common old water balance products, it is suitable to heat the main variable flow systems. When adjusting the flow of mutual couplingamong users, true to the heat users huge balance is difficult to achieve.

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