Method for manufacturing and mounting nuclear power desalting water tank

Abstract

The invention discloses a method for manufacturing and mounting a nuclear power desalting water tank. A method for assembling and forming the nuclear power desalting water tank comprises the following steps: assembling a part of top plates, and reserving unassembled top plate limbs so as to form a space in which an embracing bar lifting system is erected; erecting the embracing bar lifting system; welding, wherein a product can be lifted by the embracing bar lifting system; welding an N-1st layer of wall plates to form an N-1st layer of shell plates, performing full-length welding on the N-1st layer of shell plates with an Nth layer of shell plates, welding an N-2nd layer of wall plates to form an N-2n layer of shell plates, performing full-length welding on the N-2nd layer of shell plates with the N-1st layer of shell plates, repeating the operation, performing full-length welding from top to bottom in sequence till full-length welding of an N / 2+1st layer of shell plates and a former layer of shell plates is completed. A buttress support method is adopted to mount the wall plates of the desalting water tank; operators can enter and go outside under the desalting water tank freely; by adoption of the method, no scaffold is needed in the mounting field, so that labor and materials for erecting the scaffold can be reduced, and the safety coefficient can be increased as operators can enter and go outside under the desalting water tank freely.

Description

technical field [0001] The invention relates to the technical field of power plant installation, in particular to a method for manufacturing and installing a large desalinated water tank used in a nuclear power plant condensate polishing system. Background technique [0002] The desalinated water tank and its supporting water treatment system can provide the boiler with no salt water to meet the needs of boiler water replenishment. Take the desalted water tank in the condensate polishing system of a nuclear power plant as an example. The desalted water tank can weigh nearly 20 tons, have a volume of 400m3, and a height of nearly 10 meters. Among them, the wall of the water tank has 6 layers, the bottom plate is composed of six steel plates lapped and welded, the top plate is composed of 20 fan-shaped top plates welded, the thickness of the third layer on the wall plate is 6mm, the thickness of the lower three layers is 8mm, the thickness of the bottom plate is 8mm, and the m...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, in order to complete the installation of the desalinated water tank, scaffolding needs to be erected on site; the water tank completed by sequential welding has large processing errors; the entire production and installation period is long, and the manpower requirement is large

Images