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Pressure vessel is widely used in the field of production technology, key equipment necessary for chemical, oil refining, light industry, energy and other industrial sectors, the two types of single-layer and multi-layer structure. As the multilayer structure, as compared with the single layer structure, not only to solve the manufacturing problems of the thick-walled, having a particular advantage in the rational use of the material, the safety and other aspects, and thus the multilayered container is a multilayer pressure vessel as a pressure container, a structure type that has been widely used in various fields in the process of industrial production, example: the chemical industry ammonia synthesis tower, urea synthesis tower, petroleum refining hydrogenation reactor, full multi-storey high-pressure hydrogen storage tanks, and so on. With the continuous development of science and technology, pressure vessels in the harsh conditions of high temperature, high pressure, corrosive, therefore, in-depth study of the multi-storey container to adapt to a variety of production conditions to meet the requirements of large-scale industrial production, to ensure the pressure vessel The safe and reliable operation of great significance. Since 1931 AOSmith since the multi-storey container structure with wire rope dressing the laminates barrel section through the continuous efforts of the people and explore the structure of the multilayer pressure vessel has been great progress, and the development of a Multilayered multilayer hot jacketed, multi-layer around the plate, the multilayer around with style, multi-slice spiral around the plate, the overall multi-layer bandaging six kinds of multi-layer structure of the pressure vessel type. The high-pressure container of the overall multi-layer bandaging by the high degree of attention at home and abroad due to its safety, ease of manufacture, but the the prestressed state bandage manufacturing process is not very clear, until now there has not been a very good application. In this paper, the overall multilayer bandage high-pressure container structure type, its prestress distribution and homogenization of the main contents and results are as follows: 1. According to the container, the actual manufacturing process and structural features, consider laminates in the dressing manufacturing process friction between exists layer, the application of mechanical principles deduced a bandage the mechanical hand bandaged force and laminates vertical weld cooling contraction in the container inner cylinder, Laminates prestressed theory formula; Moreover, based Mechanics of Materials overall Multilayered high-pressure container the bandage manufacturing process using appropriate techniques (such as in Laminates outside surface by means of a hammer percussion or vibration source vibration, etc.) to its prestressed evenly distributed The theoretical analysis. 2. DH3816 static strain measurement and analysis system in a laboratory experimental testing internal diameter Φ500 the overall multi-layer bandaging high-pressure container tube section simulated manufacturing process. Experimental results show that: (1) container bandage mechanical hand bandaged force in the inner cylinder, laminates generate the Prestressed the theoretical calculations and experimental results more consistent; (2) In view of the high pressure container of the overall multi-layer bandaging bandaging certain dressing bandage force of the mechanical hand, and laminates longitudinal weld after cooling layers board manufacturing process due to contraction of the inner cylinder of the container, the laminate generated prestressed are not evenly distributed, but the distribution in accordance with a certain rule, by using appropriate techniques (such as in Laminates outer surface by the hammer or using the method of the vibration source, vibration, etc.) can make the container of the inner cylinder, the laminates prestress distribution tends to be uniform, in order to achieve its prestressed Homogenization purposes. The high-pressure container of the overall multi-layer bandaging prestress distribution and homogenization of the research results, certain guiding significance for the actual manufacturing of multilayer container, as well as to ensure the quality of its manufacturing.
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