Novel tube structure of prestress ultrahigh-pressure wire winding container

Abstract

The invention provides a novel tube structure of a prestress ultrahigh-pressure wire winding container. By changing the gradient of the end face of a tube, the pretightening height of a winding layeris greater than the height of a pressure-bearing surface of the inner wall of an inner tube. Under the condition that the volumes and the inner diameters of the container and the tube are fixed, a setof flat end face structure and angled end face structure models with different dimension parameters are obtained through a tube thickness and steel wire layer number adjustment and optimization trialcalculation method. ANSYS finite element modeling software is used for conducting simulation on different structures. The simulation result shows that to meet the same bearing requirements, an angledend face structure is adopted to replace a flat end face structure; compared with the flat end face, both the inner tube thickness and the steel wire layer number required for pressure bearing can bereduced, and the total mass reduction range of steel wire layers and the tube is about within 10.01%-17.77%. The changed angled end face tube structure adopts a triangular gasket and hollow metal O-ring combined hard seal and soft seal sealing structure and can both bear high pressure and ensure the good sealing performance.

Description

Technical field: [0001] The invention belongs to the field of pressure vessel equipment, and is a prestressed ultra-high pressure vessel. Background technique: [0002] With the rapid development of modern technology, ultra-high pressure vessels are used more and more widely in chemical industry, petrochemical industry, material processing and other fields. Under normal working conditions, the inner wall of the ultra-high pressure vessel bears a relatively high pressure, generally reaching above 100Mpa. How to improve the carrying capacity of the pressure vessel under ultra-high internal pressure has always been a research hotspot. According to the conventional elastic design theory, only increasing the wall thickness of the vessel is limited to increase the yield bearing capacity of the ultra-high pressure vessel, which will easily lead to uneven distribution of stress along the wall thickness direction, reducing the utilization rate and carrying capacity of the vessel mate...

AI Technical Summary

Problems solved by technology

When the steel wire is wrapped around the ultra-high pressure vessel with a flat end surface at a certain initial stress, in order to prevent the steel wire of the winding layer from falling off, a flange with a certain thickness will be designed at both ends of the cylinder. In this case, the height of the steel wire layer after winding will be smaller than the inner wall of the inner cylinder The height of the steel wire winding layer on the inner cylinder is weak, and it cannot produce effective pretension on the end of the inner cylinder.

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