Reinforcing structure for large opening of explosion-proof type pressure vessel

Abstract

The invention relates to a reinforcing structure for a large opening of an explosion-proof type pressure vessel. The reinforcing structure comprises an enclosing wall upper half part, a waist ring andan enclosing wall lower half part which are coaxially arranged, wherein the enclosing wall upper half part, the waist ring and the enclosing wall lower half part are integrally connected in sequenceso as to form a column-shaped vacuum structure; the waist ring extends outwards in the circumferential direction so as to form a flange; an outer arc shell ring used for being stressed uniformly underthe action of internal static pressure and dynamic pressure is formed at the joint of the upper half part of the flange and the periphery of the enclosing wall upper half part; and an inner arc shellring used for being stressed uniformly under the action of internal static pressure and dynamic pressure is formed at the joint of the lower half part of the flange and the periphery of the enclosingwall lower half part. According to the reinforcing structure for the large opening of the explosion-proof type pressure vessel, the structure can bear the static pressure of 6 MPa and can bear the repeated action of the underwater impact pressure of 10 MPa at the maximum in the meantime; the diameter of a hollow part of the reinforcing structure is larger than the diameter of the opening of the vessel, and the diameter of the hollow part can reach 0.23 compared with the diameter of the opening of the vessel; and an enclosing wall at the opening is in inside-and-outside smooth transition connection with the pressure vessel, the stress is uniform, and no obvious stress concentration area is generated.

Description

technical field [0001] The invention relates to the field of pressure vessel equipment, in particular to a reinforcement structure for large openings of explosion-resistant pressure vessels. Background technique [0002] Spherical or cylindrical shell-shaped pressure vessels need structural reinforcement at the large openings, usually in accordance with GB150 "Steel Pressure Vessels" for reinforcement by equal-area method or ultimate load analysis method. There are three reinforcement methods, namely reinforcement Loop reinforcement, overall reinforcement and reinforcement material. However, both the equal-area reinforcement method and the ultimate pressure method are based on the principle of static strength, which is not necessarily suitable for pressure vessels under the combined action of static load and dynamic load. At present, the three commonly used opening reinforcement structures all use welding to connect the reinforcement material to the container body near the ...

AI Technical Summary

Problems solved by technology

However, both the equal-area reinforcement method and the ultimate pressure method are based on the principle of static strength, and are not necessarily suitable for pressure vessels under the combined action of static load and dynamic load.

At present, the three kinds of opening reinforcement structures commonly used are welded to connect the reinforcement material with the container body near the large opening. There are obvious discontinuities in the structure, and cracks or even damage are prone to occur under the action of high pressure and periodic impact loads.

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