Method of installing elastic connecting pipe of gate of nuclear power plant equipment

Abstract

The invention belongs to the technical field of installation of nuclear power plant equipment. In order to successfully complete the installation of an elastic connecting piece of an equipment gate and ensure the successful construction progress of an entire safety shell, the invention discloses a method of installing the elastic connecting pipe of the gate of nuclear power plant equipment. The installation method comprises the following steps: step 1. axially compressing and fixing the elastic connecting piece; and step 2. introducing the elastic connecting piece and completing the connectionand fixation between the elastic connecting piece and an outer casing penetration shell ring after completing the installation of the outer casing penetration shell ring and before carrying out the inner casing prestressing force operation; step 3. temporarily connecting an inner casing side body in the elastic connecting piece to an outer safety shell in a suspension manner; step 4. carrying outinner safety shell prestressing force treatment; and step 5. connecting and fixing the inner casing side body in the elastic connecting piece to an inner casing pre-embedded ring plate in the elasticconnecting piece. The method can successfully complete the installation of the elastic connecting piece and ensures the successful construction progress.

Description

technical field [0001] The invention belongs to the technical field of installation of nuclear power plant equipment, and in particular relates to a method for installing an elastic connector of a gate of nuclear power plant equipment. Background technique [0002] The Hualong No. 1 nuclear power plant is a large nuclear power plant with a double-layer containment, and its equipment gates run through the inner and outer double-layer containment, and under different working conditions, relative axial displacement and tangential displacement will occur between the double-layer containment, so The equipment gates are connected by elastic connectors between the double containment shells. [0003] The elastic connecting piece of the equipment gate is located in the annular space provided in the middle of the sleeve of the equipment gate at the inner shell, and is fixedly installed between the pre-embedded penetrating barrel sections of the inner shell of the equipment gate. By d...

AI Technical Summary

Problems solved by technology

However, in the actual construction process on site, it was found that if the elastic connectors of the equipment gates are introduced and installed after the prestressing of the inner containment of the reactor is completed, it may not only affect the progress of the subsequent shell capping construction, but also lead to the entire construction progress. In addition, during the prestressing treatment of the inner containment of the reactor, since the deformation of the inner containment cannot be predicted, the gap between the inner containment and the outer containment may change dramatically and fail to be successful. Complete the introduction of elastic connectors, affecting subsequent construction operations

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