Production Equipment for Spirally Wound Layered Vessel

Abstract

Spirally wound layered vessels are a type of multi-layered vessel used as high pressure vessels in chemical plants, etc., and consist of an internal shell around which hoop steel is wound spirally in layers. Stable, automatic winding and high-speed welding of hoop steel are major considerations to ensure efficient production of high-quality spirally wound layered vessels. For these purposes, the hoop steel must be wound with a uniform gap between the hoop steel and minimum clearances between the layers. In order to develop winding equipment which will meet these requirements, tests were carried out to determine which parameters should be controlled and by what method. As a result, it was found that if hoop steel is controlled at a proper angle, both the gap between the hoop steel and the clearances between the layers will be within the target values and the ASME requirements.