Nuclear power plant pressure vessel main bolt measuring system and measuring method thereof

Abstract

The present invention provides a nuclear power plant pressure vessel main bolt measuring system and a measuring method thereof. The measuring system includes an industrial personal computer, a programmable logic controller, a machine tool motion control system and a measuring device, wherein the measuring device is used for contacting with a measured main bolt under the control of the machine tool motion control system, generates contact signals and sends the contact signals to the industrial personal computer and the programmable logic controller, and the industrial personal computer and the programmable logic controller are used for processing the contact signals and obtaining relative coordinate values of the contact point of the measuring device and the measured main bolt. The measuring system of the invention has high integration degree and can realize fast measurement of the center of the screw hole of the main bolt and the screw thread starting point of the main bolt. Infrared transmission and the industrial personal computer are adopted to carry out measurement calculation; and negative feedback is introduced; and therefore, an error problem caused by micro vibration of an end portion caused by large suspension depth measurement can be solved. The nuclear power plant pressure vessel main bolt measuring system has the advantages of high measuring speed and high precision; and the measuring method has the advantages of simplicity and easiness in operation.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant equipment, in particular to a measuring system and a measuring method for a main bolt of a pressure vessel of a nuclear power plant. Background technique [0002] During the long-term use of the main bolts of pressure vessels in nuclear power plants, the threads are prone to damage and need to be repaired. The repair work first needs to align the center of the main bolt screw hole and determine the starting point of the thread. However, there is currently a lack of a solution for accurately measuring the center of the screw hole of the main bolt and the position of the starting point. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a nuclear power plant pressure vessel main bolt measurement system and its measurement method, which can quickly and accurately measure the center of the main bolt screw hole and the position of...

AI Technical Summary

Problems solved by technology

However, there is currently a lack of a solution to accurately measure the center of the main bolt screw hole and the position of the starting point

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