Design method of flat-bottom symmetrical Y-shaped steel bifurcated pipe based on CATIA and ANSYS

Abstract

The invention discloses a design method of a flat-bottom symmetrical Y-shaped steel bifurcated pipe based on CATIA and ANSYS. The method comprises the following steps: establishing a two-dimensional sketch of a bifurcated pipe in CATIA, parameterizing variables for controlling the body shape characteristics of the bifurcated pipe, and establishing a standard template of a bifurcated pipe three-dimensional model by taking data reflecting whether the body shape of the bifurcated pipe is reasonable or not as a reference constraint; adjusting parameters in the standard template, and automaticallyupdating the CATIA to generate a three-dimensional model of the bifurcated pipe; importing the AUTOCAD into a three-dimensional model of the bifurcated pipe, outputting the three-dimensional model inan iges format, reading an iges format file in ANSYS, generating a three-dimensional model of the bifurcated pipe, and controlling the stress within the requirement by adjusting the thickness of the pipe wall and the cross section of a rib plate to finish calculation and analysis; unfolding the space branch pipe fragments in the CATIA to obtain a branch pipe plane graph of each fragment, and drawing a construction detail drawing. According to the informatization design method based on CATIA and ANSYS, modeling, computational analysis and accurate drawing of a construction drawing can be rapidly carried out on the steel bifurcated pipe, and the efficiency is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of computer-aided design of water conservancy and hydropower engineering, in particular to a design method of a flat-bottom symmetrical Y-shaped steel bifurcated pipe based on CATIA and ANSYS. Background technique [0002] The crescent rib bifurcated pipe is a type of bifurcated pipe that has been continuously evolved and improved from the three-beam bifurcated pipe. Because of its good structure, smooth water flow in the pipe, and small head loss, it is currently used in water conservancy and hydropower projects at home and abroad. More of a type of bifurcated pipe. The main pipe of the crescent rib bifurcated pipe and the axis of the branch pipe are arranged at the same elevation (the upper and lower bulges in the middle of the bifurcated pipe). Since the radius of the main pipe is larger than the radius of the branch pipe, when the steel pipe is repaired, the self-flow drainage in the pipe will not be pos...

AI Technical Summary

Problems solved by technology

The axes of the main pipe and the branch pipe of the crescent rib bifurcation pipe are arranged on the same elevation (the middle part of the bifurcation pipe is bulged up and down). Since the radius of the main pipe is larger than the radius of the branch pipe, when the steel pipe is overhauled, the pipe cannot be drained by itself. The measure of opening the upper hole and connecting the special drainage system for drainage brings inconvenience to the design, construction and maintenance. There is a large height difference, more silt, and drainage facilities are more likely to be blocked

In response to this problem, domestic scholars and engineers and technicians have improved the crescent rib bifurcation pipe, one of which is a flat-bottomed steel bifurcation pipe (such as Figure 2-4 As shown, the bottom is flat and only bulges upward) can effectively solve the drainage problem through the free flow of water in the pipe, but the form of the branch pipe is novel, and there is no relevant design manual at home and abroad to calculate and analyze it The space type is complex, and it is cumbersome to draw construction drawings

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