一种用于反应堆压力容器螺栓拉伸量测量的系统

A System for Reactor Pressure Vessel Bolt Stretch Measuring Measurement

核电厂在进行反应堆压力容器堆内构件检修时,通常使用螺栓拉伸机对压力容器进行开盖和盖闭操作。在压力容器开盖和闭盖的过程中,都需要对压力容器主螺栓进行拉伸。为了保证每根主螺栓载荷的均匀性和可靠性,需要对主螺栓的拉伸量进行测量。传统的液压螺栓拉伸量数据测量方式主要采用传统机械指针式百分表,人工进行监测并手工记录数据,这种方式往往造成测量数据存在误差和人为的不确定性因素,直接影响了螺栓紧固的质量和设备的整体性能。为了提高螺栓拉伸量数据测量的准确性,提升液压拉伸机的性能,本文研究一套用于反应堆压力容器螺栓拉伸量的自动测量系统。螺栓拉伸量自动测量系统采用位移传感器采集螺栓的拉伸量变化,通过数字式千分表实时显示螺栓拉伸量的测量数据,并通过数据传输线以及多通道数据采集器将多组数据传输到工控机或者电脑上,对测量的数据进行分析、处理、逻辑判断以及自动存储,指导操作人员进行螺栓紧固。此外,测量数据可以通过表格的形式导出,方便操作人员对数据进行核查和问题追溯。

When the nuclear power plant carry out the maintenance of the reactor pressure vessel internals,the bolt tensioning machine is usually used to open and close the head of the pressure vessel.During the process of opening and closing the cover of the pressure vessel,it is necessary to stretch the main bolt of the pressure vessel.In order to ensure the load uniformity and reliability of each main bolt,it is necessary to measure the tensile amount of the main bolt.The traditional hydraulic bolt tension data measurement method mainly uses the traditional mechanical pointer dial indicator to monitor and record the data manually.This method often causes errors and artificial uncertainties in the measurement data,which directly affects the bolt fastening quality and the overall performance of the equipment.In order to improve the accuracy of bolt tension data measurement and improve the performance of hydraulic tension machine,this paper intends to study a set of automatic measurement system for bolt tension of reactor pressure vessel.The automatic measurement system of bolt tension adopts displacement sensor to collect the change of bolt tension,displays the measured data of bolt tension in real time through digital dial indicator,and transmits multiple groups of data to industrial computer or computer through data transmission line and multi-channel data collector,analyzes,processes,logically judges and automatically stores the measured data,and guides operators to tighten bolts.In addition,the measurement data can be exported in the form of tables,which is convenient for operators to check the data and trace problems.