Mathematical simulation for compensation capacities area of pipeline routes in ship systems

Abstract

Abstract. In this paper, the authors considered the problem of manufacturability's enhancement of ship systems pipeline at the designing stage. The analysis of arrangements and possibilities for compensation of deviations for pipeline routes has been carried out. The task was set to produce the "fit pipe" together with the rest of the pipes in the route. It was proposed to compensate for deviations by movement of the pipeline route during pipe installation and to calculate maximum values of these displacements in the analyzed path. Theoretical bases of deviation compensation for pipeline routes using rotations of parallel section pairs of pipes are assembled. Mathematical and graphical simulations of compensation area capacities of pipeline routes with various configurations are completed. Prerequisites have been created for creating an automated program that will allow one to determine values of the compensatory capacities area for pipeline routes and to assign quantities of necessary allowances. IntroductionImprovement of methods for designing, manufacturing and installation of ship pipelines without fitting work and redetermination of dimensions on the ship is associated with solving two problems: accuracy in the design dimensions of the main pipes and obtaining a reliable design configuration of the "fit pipes" [1][2][3][4][5][6][7][8]. The technology of manufacturing and installation of the fit pipe includes actual measurements between two rigidly fixed connections and fitting work on the installation of welded joints [9][10][11][12][13][14][15]. Increasing a technological level of pipeline routes in ship systems is limited by the fact that during the installation, actual design dimensions and configuration of the fit pipes are not allowed to be changed.In connection with the foregoing, in order to improve the processability of ship pipelines, the fit pipe must be manufactured according to design information without specifying the dimensions at the place on the vessel. The design documentation for the fit pipes will differ from the documentation for the main pipes only by the presence of technological allowances at the ends of the fit pipe. For the successful installation of trails with fit pipes, it is necessary to be able to move the route during the installation, thus compensating for the deviations of both pipes and adjacent structures in directions that cannot be compensated for by allowances on the fit pipe [16]. The pipeline route must be able to be moved at least in one coordinate direction.