Study and Design of High Pressure Vessel Based on Rubber O-ring Sealing
|Course||Chemical Process Equipment|
|Keywords||High pressure vessel Seal structure Sealing mechanism O -shaped rubber ring Analysis and design Optimal design|
Compared with other high-pressure vessel sealing structure, the O-shaped rubber ring seal structure has the following characteristics: simple structure, reliable sealing; force bolts, eliminating the need for metal shims or spacers; relatively low processing requirements and accuracy; easy installation and removal quick. Looking at all kinds of domestic and foreign literature, is more difficult to be found in the rubber O-ring seal structure is applied to engineering examples of the high-pressure vessel sealing rubber O ring used in the theory of the high-pressure vessel sealing few people study and reported. \Research: (1) O-shaped rubber ring seal theoretical research and analysis using finite element method analysis of pressure transmission coefficient of the O-shaped rubber ring in a confined space; force balance analysis of the formation of the overall displacement of the rubber O ring processes and factors; through the analysis of O-shaped rubber ring in contact with pressure-tight seal state seal contact surface, to further improve the rubber O-ring seal theory; applied to the high-pressure sealing O-rubber ring at the same time theoretical exploration and seal failure analysis. (2) the axial force of the high pressure vessel sealing structure innovative design of this article Wood sealed structure based on the O-shaped rubber ring seal to withstand characteristics and O-shaped rubber ring seal performance and mechanism innovation design a new high-pressure vessel sealing structure (apply for state invention patents, and has won the national utility model patents). The structure completely using a rubber O-ring seals, non-metallic gaskets, effectively reducing the machining accuracy of the sealing surface; force bolts work state, to open easy installation. After testing, the new seal structure meets the design requirements. (3) the Simplified and bottom end cap analysis design analysis and design methods to the design of the wall thickness of the cylinder and bottom end caps, and the finite element method numerical analysis of the stress intensity of the cylinder and the bottom of the cover. (4) upper Simplified axial force to withstand the design process of structural optimization design reference to \element method for numerical analysis of the shear ring and upper cylinder contact surface of the contact pressure distribution, selected the triangular contact pressure distribution of the contact analysis results more in line with the dangerous section of the upper part of the cylinder optimized design and stress check.