US 2015/0316935 A1Published application

Method and devices for balancing a group of consumers in a fluid transport system

AssigneeBelimo Holding AG

InventorsPeter SCHMIDLIN, Reto HOBI, Urs KELLER, Norbert LEDERLE, Marc THUILLARD

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Abstract

To balance (S3) a group of consumers in a fluid transport system in which each consumer is provided with a motorized control valve for regulating the flow through the consumer, characteristic data for the consumers is stored (S2) which determines a valve position of the relevant control valve for target flows through one of the consumers in each case. A current total flow through the group of consumers is determined by means of a common flow sensor (S32) and a balance factor (S34) is defined on the basis of the current total flow and a sum of the desired target flows through the consumers. The consumers are dynamically balanced by setting (S31) the valve settings for the corresponding control valves on the basis of the characteristic data and the balance factor.

Claims15

Dependent claims

A method for balancing a group of consumers (V1, V2, V3, Vi) in a fluid transport system (5, 5′) in which the consumers (V1, V2, V3, Vi) are each provided with a motorized regulating valve (V11, V22, V33, Vii) for regulating the flow through the consumer (V1, V2, V3, Vi), characterized by:

storing (S2) characteristic data for the consumers (V1, V2, V3, Vi) which determine a valve position (Hi) of the corresponding regulating valve (V11, V22, V33, Vii) for the consumers (V1, V2, V3, Vi) for target flows (Fti) through one of the consumers each (V1, V2, V3, Vi) at a constant pressure (ΔP0) in the fluid transport system (5, 5′),
ascertaining (S32) a current total flow through the group of consumers (V1, V2, V3, Vi) by means of a common flow sensor (4),
determining (S34) a balancing factor based on the current total flow and a sum of the desired target flows through the consumers (V1, V2, V3, Vi), and
performing (S3) a dynamic balancing of the consumers (V1, V2, V3, Vi) by setting the valve position (Hi) of the corresponding regulating valves (V11, V22, V33, Vii) based on the characteristic data and the target flows (Fti) scaled using the balancing factor.

1 more element

A device (1) for balancing a group of consumers (V1, V2, V3, Vi) in a fluid transport system (5, 5’) in which the consumers (V1, V2, V3, Vi) are each provided with a motorized regulating valve (V11, V22, V33, Vii) for regulating the flow through the consumer (V1, V2, V3, Vi) and a common flow sensor (4) for measuring the total flow through the group of consumers (V1, V2, V3, Vi) is provided, characterized by:

a characteristic data module (11), which is configured to store characteristic data for the consumers (V1, V2, V3, Vi), such that the characteristic data determine a valve position (Hi) of the corresponding regulating valve (V11, V22, V33, Vii) for target flows (Fi) through the respective consumer (V1, V2, V3, Vi) at a constant pressure (ΔP0) in the fluid transport system (5, 5′), and
a balancing module (12), which is configured to ascertain the current total flow through the group of consumers (V1, V2, V3, Vi) by means of the flow sensor (4), to determine a balancing factor based on the current total flow and a sum of the desired target flows through the consumers (V1, V2, V3, Vi) and to perform a dynamic balancing of the consumers (V1, V2, V3, Vi) by setting the valve position (Hi) of the corresponding regulating valves (V11, V22, V33, Vii) based on the characteristic data and the target flows (Fti) scaled using the balancing factor.

Dependencies are inferred from the claim text.