Aligning and leveling method for metal reactor core shell of nuclear power plant

Abstract

The invention belongs to the technical field of nuclear power engineering construction, and provides an aligning and leveling method for a metal reactor core shell of a nuclear power plant in order to complete installation work of the metal reactor core shell of a high temperature gas cooled reactor nuclear power plant and ensure the installation quality. The method comprises the steps that the position of the metal reactor core shell is measured with a laser tracker, and a deviation between a measured value and the designed installation position is calculated through analytical equipment; a hydraulic pump station controls X-direction oil cylinders, Y-direction oil cylinders and Z-direction oil cylinders of three-dimensional hydraulic adjusting machines according to the deviation, so that a structural beam moves in the X direction, the Y direction and the Z direction to drive pull ropes to move, and the pull ropes drive the metal reactor core shell to move; the previous step is repeatedly conducted till the metal reactor core shell is adjusted to the designed installation position and adjusted to be horizontal. According to the method, not only can the adjustment and installation work of the metal reactor core shell be completed, but also the installation precision and quality are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of nuclear power engineering construction, and in particular relates to a method for aligning and leveling metal core shells of nuclear power plants. Background technique [0002] The high-temperature gas-cooled reactor is an advanced nuclear energy technology with independent intellectual property rights and fourth-generation technical characteristics in my country. It has high safety features, a wide range of applications, and a very broad commercialization prospect. The metal core shell is the main equipment of the main circuit of the high-temperature gas-cooled reactor nuclear power plant. This large and complex main equipment is the heart of the nuclear power plant. The installation conditions are harsh, the precision requirements are high, and it is extremely difficult. The installation and adjustment of the main equipment (such as the metal core shell) of the conventional pressurized water reactor nuc...

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Problems solved by technology

The installation and adjustment of the main equipment (such as the metal core shell) of the conventional pressurized water reactor nuclear power plant is carried out with the cooperation of the nuclear island ring crane, while the high-temperature gas-cooled reactor nuclear power plant reactor is not specially designed for the installation and adjustment of the main equipment, and the reactor maintenance crane The load is only 100 tons, which cannot meet the installation and adjustment requirements of the metal core shell with a single weight of more than 250 tons. Therefore, it is necessary to develop advanced and reliable main equipment alignment and leveling methods to complete the installation of the metal core shell and ensure installation quality

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