Method for guaranteeing mounting accuracy of tray internal part support ring of pressure container

Abstract

The invention discloses a method for guaranteeing the mounting accuracy of a tray internal part support ring of a pressure container. The method comprises the following steps of: I, clamping the two ends of adjacent support rings through the clamp slots on two measurement clamp plates; II, clamping the support rings clamped by the clamp slots on the measurement clamp plates by use of a clamp slot on the positioning angle steel; III, fixing the support rings and the positioning angle steel together to form a support ring group; IV, removing the measurement clamp plates; V, if the support rings are continuously fixed, performing steps VI and VII; otherwise, mounting the support rings fixed together on a tray, performing heat treatment and removing all positioning angle steel to finish the mounting; VI, clamping the outermost support ring of the support ring group by use of one clamp slot at one end of the measurement clamp plate, and placing new support rings into other clamp slots on the measurement clamp plate one by one; and VII, repeating the steps II to V. The method disclosed by the invention has the characteristics of high support ring assembly speed, short manufacturing period, easiness in guarantee of flatness and space and the like.

Description

technical field [0001] The invention relates to a method for ensuring the installation accuracy of a support ring of a pressure vessel tray internal part, and belongs to the field of pressure vessel trays. Background technique [0002] For tower equipment in chemical equipment, such as absorption towers and washing towers, there are dozens or even hundreds of trays. The flatness and spacing of the trays directly affect the product quality and the performance of the equipment. The accuracy of the welding of the support ring in the support determines the flatness of the tray and the spacing between the trays. Standard requirements: the tolerance of the distance between two adjacent layers of support rings is ±3mm, and the tolerance of the distance between any two layers of support rings is ±10mm within 20 layers; The local flatness tolerance is 1mm, and the upper surface flatness of the entire support ring is ≤5mm. If it is only assembled according to the marking line withou...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the flatness of the support rings of the tower and the distance between the support rings are difficult to meet the requirements, and to provide a flatness of the support rings and the distance between the support rings to meet the requirements and to prevent deformation during welding heat treatment, improve The method of ensuring the installation accuracy of the support ring of the internal parts of the pressure vessel tray by assembling speed and shortening the manufacturing cycle

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