SOFTWARE DEVELOPMENT FOR AUTOMATED DESIGN OF FLOW METERS

This work presents the development of a software complex for the automated design of variable pressure drop flowmeters. It includes flowmeters with standard primary devices, namely a diaphragm, nozzles and a venturi tube. To fulfill the task, a review of various software solutions has been conducted. As a result, it was concluded that the existing software does not fully solve the task, because it does not calculate most of the design parameters for metering device. The next stage was a review of the flow rate measuring method by variable pressure drop, and based on it, a mathematical model of flow meters has been implemented taking into account the existing standards. Next, the initial geometric parameters of the flow meter were evaluated and the parameter selection algorithm for the diaphragm with pressure taking chambers was given. 
As a result of the performed analysis, developed software allows you to conveniently enter input parameters, such as flowrate, pressure drop, pipeline diameter, type of constriction device, method of pressure selection, and at the output receive a corresponding schematic image of the flowmeter with all design parameters and the flow calculation formula, based on the pressure difference. For a better understanding of the software operation, an overview of it was offered and an example of a nozzle calculation has been demonstrated. 
The implementation of the created software application makes it possible to increase the accuracy of the accounting of consumed resources, and also reduces time and money costs for measuring instrument development. 
In the future, it is planned to create the software complex by adding to it the design capabilities of calorimetric, ultrasonic flowmeters and rotameters, as well as special software for selecting the most optimal flow measurement method based on the specified parameters of the measured medium, pipeline diameter and flow measurement range. 
Therefore, it will be possible to carry out metrological control and supervision of such measuring complexes, develop and certify methods for measuring the flow of liquids and gases.