Mounting clearance measuring device of reactor coolant pump thrust plate

Abstract

The invention relates to a mounting clearance measuring device of a reactor coolant pump thrust plate. An upper pressure plate (3) is mounted on a tool shaft (4); a bolt (1) is assembled with a threaded hole formed below the tool shaft (4) through a lower pressure plate (2); and a thrust plate (7.2) is installed between the upper pressure plate (3) and the lower pressure plate (2). An axial clearance plate (5) is installed above the tool shaft (4) by hexagon head screws (6). A lifting lug is installed in the threaded hole above the tool shaft (4). A dial indicator is mounted on the plane of the axial clearance plate (5). Therefore, the clearance between the thrust plate and the main thrust tile can be measured quickly and accurately. The time spent in the whole process is reduced; the controllability is high; the manpower is reduced; the operation becomes simple; and the device is convenient to mount or dismount. The device is manufactured conveniently; and the cost is saved.

Description

Technical field: [0001] The invention relates to a device for measuring the installation gap of a thrust plate of a reactor coolant pump. Background technique: [0002] The thrust bearing of the coolant pump of the million-million-scale reactor coolant pump is one of the key links to maintain the stable operation of the nuclear main pump. The installation gap between the thrust plate and the main thrust pad affects the oil film thickness, oil film stiffness and damping characteristics during the bearing operation; installation; Unqualified clearance will cause the thrust plate to wear, and in severe cases, it will cause tile burning, which will affect the stable operation of the main pump and the power station. The installation gap between the thrust plate and the main thrust pad is required to be 0.2mm~0.225mm. During the trial assembly of the thrust bearing, it is necessary to accurately measure the installation gap between the thrust plate and the main thrust pad and adjust i...

AI Technical Summary

Problems solved by technology

In the past, the installation gap between the thrust plate and the main thrust pad in China was mostly measured separately for a single part of the thrust bearing, and then the distance between the bearing chambers was used to add and subtract. This method has a large error in the superposition of multiple measurements; It is cumbersome and complicated, the workload is heavy and the accuracy of the measured value cannot be guaranteed

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