Device and method for adjusting and replacing swing sensor of hydraulic turbine set on line

Abstract

The invention discloses a device and a method for adjusting and replacing a swing sensor of a hydraulic turbine set on line.An adjusting mechanism is connected with a fixed plate, a bracket is matched with a guide rod of the adjusting mechanism, a mounting rod is connected with the bracket and the swing sensor, and the bracket is limited through a limiting groove and a limiting block on a guide pipe. The guide rod rotates to drive the bracket to drive the swing sensor to move in an axial direction of the guide pipe to be close to or away from a set large shaft, and a gap sensing value of the swing sensor is adjusted or the swing sensor is replaced in the running state of the set. The device disclosed by the invention solves the problem that the swing sensor can only be adjusted and replaced after an original hydraulic turbine set is shut down, so that large shaft swing data cannot be monitored, and judgment of operation and maintenance personnel on the running state of the set is affected and has the characteristics that the structure is simple, the set does not need to be shut down when a swing sensor gap is adjusted or the swing sensor is replaced without influencing online monitoring of the swing data, accurate judgment of the operation and maintenance personnel of the set is facilitated, and the device is safe and reliable and is simple and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of water turbines, and relates to a device and method for online adjustment and replacement of a swing sensor of a water turbine unit. Background technique [0002] The installation of the swing sensor of the turbine must be completed before the operation of the unit, and the clearance adjustment between the swing sensor and the main shaft of the turbine must be completed. The current problem is that once the unit finds that the gap value is incorrect or the swing sensor fails during operation, it must be adjusted or replaced after the unit is shut down, which leads to the fact that the unit’s online monitoring system cannot correctly reflect the swing during the unit’s operation. The data affects the correct judgment of the operation and maintenance personnel on the operating status of the unit. Contents of the invention [0003] The technical problem to be solved by the present inv...

AI Technical Summary

Problems solved by technology

The current problem is that once the unit finds that the gap value is incorrect or the swing sensor fails during operation, it must be adjusted or replaced after the unit is shut down, which leads to the fact that the unit’s online monitoring system cannot correctly reflect the swing during the unit’s operation. data, affecting the correct judgment of operation and maintenance personnel on the operating status of the unit

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