METHOD FOR FLUID FLOW MEASUREMENT FOR A DISCRETE AREA OF A FLUID SUPPLY NETWORK

摘要

The present invention provides a method for fluid flow measurement for a discrete area of a fluid supply network, where the fluid supply network comprises a network of pipes for delivering a fluid to consumers. The network of pipes comprises at least one main pipe to transport fluid from a source into the fluid supply network, wherein the main pipe crosses a boundary between the discrete area and a further area of the fluid supply network, that is outside of the discrete area, and a plurality of distribution pipes, wherein each distribution pipe is adapted to transport fluid from the main pipe to a consumer fluidly connected to the distribution pipe. The distribution pipes are equipped with a plurality of key metering points. Each key metering point is fitted up with a pressure sensor and a consumption gauge. Therein each pressure sensor is adapted to make a measurement of fluid pressure (P 1 , P 2 ) in the distribution pipe (5, 13) where the pressure sensor is installed. And each consumption gauge is adapted to measure fluid consumption (q 1 , q 2 ) by consumers that are fluidly connected by the distribution pipe. According to the method, during the steps a) and b) the fluid pressure (P 1 , P 2 ) and the fluid consumption (q 1 , q 2 ) on at least two selected key metering points that are located inside and outside of the discrete area are measured. Having the fluid pressure (P 1 , P 2 ) and the fluid consumption (q 1 , q 2 ) measured on these selected key metering points the fluid flow (Q i ) in the main pipe that crosses the boundary of the discrete area is calculated during the step c) of the method.