Design checking method for revolving arm of flange cover of high-pressure container

Abstract

The invention provides a design checking method for a revolving arm of a flange cover of a high-pressure vessel, which specifically comprises the following steps of: S1, determining materials adopted by each component, and determining the yield strength and allowable stress of each component and a welding seam; s2, various design parameters of the rotating arm of the flange cover of the high-pressure vessel are determined, stress borne by all the components is calculated and checked according to the design parameters, the components are qualified when calculated values are smaller than corresponding allowable stress values, and the design parameters are adjusted according to calculation results until the judgment results are qualified, and the components are not qualified when the judgment results are unqualified. The method specifically comprises the following steps of: (1) checking the combined stress of the rotary arm; (2) checking a rotary arm supporting plate; (3) checking a suspender welding piece; (4) checking the flange cover connecting plate; (5) checking shear stress and extrusion stress of the connecting bolt; and (6) checking the welding seam. According to the technical scheme, the technical problem that in the prior art, a flange cover rotating arm design process is lack of a checking process is solved.

Description

technical field [0001] The invention relates to the field of flange cover structural design checking, in particular to a design checking method for a flange cover rotary arm of a high-pressure vessel. Background technique [0002] The vertical hanging cover type manhole is favored by users because of its convenient operation. For low-pressure vessels, it is usually selected from the standard HG / T 2151-9-21521-2014, but it is only applicable to vessels whose pressure does not exceed 4MPa. However, for manholes that exceed the pressure range specified in the standard or the manhole is of a non-standard size, the standard value cannot be selected. In the existing technology, engineering companies usually provide some standard drawings, which need to be selected according to the weight of the manhole cover, which cannot cover all specifications, and there is no calculation and verification process, which lacks the guarantee of safety. [0003] In the prior art, for the calcula...

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