METHOD AND DEVICE FOR SUPPLYING A MEASUREMENT ELECTRONICS SYSTEM WITH ELECTRICAL ENERGY

摘要

A method and a device for supplying a measurement electronics system in a fitting, through which a fluid flows, with electrical energy, which is generated in a turbine by the fluid flowing through the filling, wherein the flow quantities and pressures vary within wide boundaries, typically 1:1000. A pressure control device associated with the turbine controls the pressure of the fluid striking the turbine in such a manner that the electrical energy required for operating the measurement electronics system is generated with a small flow quantity, the pressure loss incurred by the fluid while flowing through the fitting being limited to a maximum value.

主权项

1. A method for supplying an electronic measuring system in a fitting, through which a fluid flows, with electric power, wherein a flow rate of the fluid flowing through the fitting fluctuates, via a power generating device, the method comprising:
arranging a generator having a turbine in a pipe section through which the fluid flows, the generator generating electric power to supply the electronic measuring system; providing a control device; and providing at least one element for influencing the fluid flow through the power generating device, wherein the turbine of the generator generates electric power starting at a predetermined minimum flow rate of the fluid through the fitting, wherein a pressure loss of the fluid that the fluid experiences in the power generating device is determined, and wherein the control device, depending on the determined pressure loss and/or the flow rate determined by the electronic measuring system, controls the at least one element for influencing the fluid flow so that the pressure loss that the fluid in the power generating device experiences does not exceed a predetermined value.