During the starting of a steam turbine, the turbine casing expands gradually, and during shutdown, the metal temperatures of various parts of the turbine decrease, causing the casing to contract gradually and reduce in expansion. The absolute expansion sensor TD-2 0-80mm is used to detect the expansion value of the turbine casing and is generally installed on the foundation of the front and rear bearing boxes. It has two modes of indication: local indication and remote indication, which can effectively improve the effectiveness and efficiency of monitoring the thermal expansion of the steam turbine casing.

1. Local indication: The local indication mode is suitable for on-site operation and real-time observation. The readings of casing expansion sensor TD-2 can be directly observed and analyzed in the steam turbine room or on-site. The advantage of this mode is its real-time and intuitive nature. Operators can immediately obtain monitoring results, promptly detect any abnormal thermal expansion of the casing, and take corresponding measures. In addition, local indication can also be used to compare different monitoring points, helping to determine the distribution of thermal expansion of the casing for more accurate analysis and adjustments.

2. Remote indication: Remote indication means that the readings of the thermal expansion sensor TD-2 can be transmitted to the control room or control center through a remote monitoring system. The advantage of this mode is its convenience and real-time nature. Operators can obtain the monitoring results of the thermal expansion of the casing through the monitor DF9032 MaxA in the remote monitoring system anytime and anywhere without the need to be physically present on-site. This improves work efficiency and enables timely responses in situations where remote control or adjustments are required.