What is the function of the EH oil system in a steam turbine?
2 Answers
The function of the steam turbine EH oil system is to provide power oil to the main steam valve and governor valve of the steam turbine, enabling them to operate quickly, reliably, and sensitively to ensure the safety of the steam turbine. Below is a related introduction to steam turbines: 1. Working principle: A steam turbine is an external combustion rotary machine that converts the thermal energy of steam into mechanical work. Steam from the boiler enters the steam turbine and passes through a series of annularly arranged nozzles and moving blades, converting the thermal energy of the steam into the mechanical energy of the rotating turbine rotor. The different ways in which steam converts energy within the steam turbine result in steam turbines with different working principles. 2. Structural components: It consists of rotating parts and stationary parts. The rotor includes the main shaft, impeller, moving blades, and coupling. The stator includes the steam inlet section, cylinder, diaphragm, stationary blade grid, steam seal, and bearings, among others.
As an operator who spends all day on-site, the EH oil system is like the lifeline of our steam turbine. It primarily uses high-pressure hydraulic oil to operate valve opening and closing, precisely controlling steam flow to respond to load changes and ensure smooth machine operation. Once during a sudden grid fluctuation, it was the EH system's rapid response in adjusting the valves that prevented an overload failure. The oil used is a special fire-resistant synthetic type, with strong fireproof properties and resistance to high-temperature ignition. Routine maintenance checks on oil temperature, pressure, and leakage points are crucial, as oil contamination can cause valve sticking and affect power output efficiency. I also pay attention to the noise of the hydraulic pump during daily operations, as unusual sounds are often early warning signals. In short, it keeps the machine efficient and safe, and there's no room for carelessness.
