Implementation In Hydraulic Calculation Of Power Plant Piping Based On PDMS

With the development of computer application technology, three-dimensional design has become the direction of industrial design, PDMS(Plant Design Management System) is a integrative software based on database and graphical interfaces, and also a most advanced three-dimensional plant design software. PDMS is vastly used in the design of power plant.however, the way to conduct hydraulic calculation for the model is still a problem to be solved, the double-quick developed calculation technique of single and two phase flow in recent years has laid the foundation for it.A new way was developed by author to implement the hydraulic calculation of the software, the 3D model building was connected with the hydraulic calculation function.Using the Programmable Macro Language(PML), implemented the function to output a specially formatted TXT document involving the information of the piping layout, the text was called intermediary text.The hydraulic calculation software developed in JAVA language was embedded in PDMS software, to input the intermediary text, the order of pipes and instruments in the piping was determined by their location information and head/tail reference information. The hydraulic calculation can be conducted after the setting of the head or tail liquid condition, the calculation was based on《Code for Design of Thermal Power Plant Steam/Water Piping》, the working fluid included single and double phase liquid, the calculation results for single phase liquid were resistance and pressure fall of the piping, and for double phase liquid were resistance and the supreme flow mass of the piping.The method successfully implemented the real-time hydraulic calculation as soon as the Power Plant piping model was built, made full use of the rapidity and precision advantages of computer calculation, The result of the hydraulic calculation provide reference for the modification or optimization of the piping models built by the PDMS software. The method was vastly used and had a great application foreground.