Composition of steam turbine lubricating oil system (including action process and working principle)
The steam turbine lubricating oil system extracts lubricating oil from the oil tank through the oil pump, and after filtering and cooling, distributes it to various parts of the engine to form a uniform oil film, reduce friction and cool moving parts. After the oil film is formed, the lubricating oil flows back to the oil tank for recycling. The system is equipped with monitoring equipment to ensure that parameters such as oil pressure and temperature are within the appropriate range. This process ensures the smooth operation of the turbine and extends the service life of mechanical parts.
I. Composition of steam turbine lubricating oil system
The steam turbine lubricating oil system is composed of an oil tank, an oil pump, an oil filter, a cooler, a pressure regulating valve, a distributor, an injector, and a lubricating oil monitoring device. The details are as follows:
1. Oil Tank
A container for storing lubricating oil. The oil tank is usually located at the bottom of the generator set or the turbine body, used to store lubricating oil, and may be equipped with an oil level gauge, a thermometer and a filter.
2. Oil Pump
Responsible for extracting lubricating oil from the oil tank and delivering it to the parts that need lubrication, ensuring that all parts of the engine can get enough lubrication.
3. Oil Filter
Used to filter impurities and contaminants in the lubricating oil to prevent them from entering the engine and keep the oil clean.
4. Cooler
Some systems will include a lubricating oil cooler to reduce the temperature of the lubricating oil, ensure the normal operation of the system and extend the service life of the lubricating oil.
5. Pressure Regulating Valve
Used to maintain the lubricating oil pressure in the system within an appropriate range. It can ensure that the engine can get enough lubrication under different loads and operating conditions.
6. Distributor
Direct the lubricating oil to various parts of the engine that need lubrication, such as bearings, gears and other moving parts.
7. Injector
Some systems use injectors to spray lubricating oil directly onto the surface of high-temperature or high-friction components to reduce friction and cool these components.
8. Oil Monitoring Device
It is used to monitor the quality, viscosity, moisture, temperature and pressure of lubricating oil online to ensure the normal operation of the system.
II. Function of Steam Turbine Lubricating Oil System
The steam turbine lubricating oil system plays a key role in the normal operation of the steam turbine, which is mainly reflected as follows:
1. Reduce friction between contact surfaces of components
Various moving parts inside the steam turbine, such as bearings, gears, etc., will generate friction during high-speed rotation and movement. Lubricating oil forms a thin film on the surface of these components to reduce friction, thereby reducing energy loss, improving efficiency, and extending component life.
2. Cooling component temperature
Lubricating oil can not only lubricate but also cool. In the high temperature environment of the turbine, by taking away the heat from the surface of the components, the lubricating oil helps maintain the appropriate operating temperature, prevents the components from overheating, and improves the reliability and stability of the system.
3. Cleaning effect
The lubricating oil can carry away impurities, particles and pollutants by flowing inside the turbine, and is filtered through the oil filter to keep the lubrication system clean. This helps prevent wear and corrosion on the surface of the components.
4. Provide sealing effect
The film formed by the lubricating oil between the moving parts not only reduces friction, but also helps to form a seal to prevent gas and pollutants from entering the mechanical parts and maintain the integrity and performance of the components.
5. Anti-corrosion
Lubricating oil usually contains anti-corrosion and antioxidant additives to prevent metal parts from corrosion and oxidation and extend the service life of the turbine.
6. Pressure regulation and balance
The pressure regulating valve in the lubricating oil system can maintain the appropriate oil pressure to ensure that all parts of the system are adequately lubricated. This is crucial to the performance and reliability of the balanced system.
7. Improve equipment efficiency
By reducing friction, lowering temperature and keeping clean, the lubricating oil system helps to improve the overall efficiency of the turbine, reduce energy loss and improve energy utilization.
The role of the lubricating oil system in the turbine is to ensure that each mechanical component can maintain adequate lubrication while running at high speed, thereby improving the reliability, stability and life of the system.
III. Working principle of the steam turbine lubricating oil system
The working principle of the steam turbine lubricating oil system is to ensure that the lubricating oil forms a uniform oil film inside the steam turbine to reduce friction between components, cool moving parts, and remove pollutants, thereby ensuring the normal operation and life of the steam turbine.
1. Oil pump operation
First, the lubricating oil is extracted from the oil tank by the oil pump and delivered to various parts of the engine that need lubrication. The oil pump is responsible for maintaining the oil pressure in the system to ensure that sufficient lubricating oil can flow to various parts of the engine.
2. Oil filter filtration
The lubricating oil extracted by the oil pump first passes through the oil filter, which is to remove impurities, particles and other contaminants in the oil. The filtered clean oil continues to flow into the engine.
Oil Cooling: In some systems, the lubricating oil may pass through a cooler to reduce its temperature. Cooling helps prevent the lubricating oil from losing its lubricating properties in a high temperature environment, and also helps cool the moving parts to maintain the appropriate operating temperature.
3. Oil Distribution
After filtering and possible cooling, the lubricating oil is directed to different parts inside the engine, such as bearings, gears, sliding surfaces, etc. This process is completed by a distributor and a network of pipes.
4. Forming an Oil Film
The lubricating oil forms a thin film on the surface of the moving parts, which helps to reduce friction and wear between the parts. The oil film also helps to form a seal to prevent gas and impurities from entering the engine.
5. Oil Recovery
After the oil film is formed, the lubricating oil will flow back to the oil tank and re-enter the circulation. This process ensures that the lubricating oil can be continuously recycled and the oil quality is maintained at an appropriate level.
6. Monitoring and Control
The lubricating oil system is usually equipped with monitoring equipment to monitor parameters such as temperature, pressure and quality of the lubricating oil in real time. Pressure regulating valves and other regulating devices ensure that the oil pressure in the system is maintained within the appropriate range.
The steam turbine lubricating oil system realizes the circulation, filtration, cooling, distribution and monitoring of lubricating oil through the coordinated action of components such as oil pumps, oil filters, coolers, distributors, etc., ensuring that each moving part can be properly lubricated, thereby ensuring the normal operation of the steam turbine.
IV. Workflow of steam turbine lubricating oil system
The workflow of the steam turbine lubricating oil system can be divided into the following main steps, which ensure the circulation, filtration, cooling, distribution and monitoring of lubricating oil throughout the system. However, the specific system design may vary depending on the manufacturer and model.
1. Lubricating oil storage and supply
The work of the steam turbine lubricating oil system begins with the oil tank, which stores sufficient lubricating oil. At the beginning, the oil pump starts to draw lubricating oil from the oil tank.
2. Pressure regulation and filtration
The oil pump sends lubricating oil into the system and passes through the pressure regulating valve to maintain the appropriate oil pressure. Before entering the system, the lubricating oil passes through the oil filter, which is a step designed to remove impurities and particles in the oil.
3. Lubricating oil cooling
Some systems may include a lubricating oil cooler. The lubricating oil passes through the cooler to reduce the temperature and ensure that the lubricating oil can still work effectively in a high temperature environment. The cooler usually reduces the temperature of the lubricating oil through the cooling medium of the turbine or an additional cooling system.
4. Lubricating oil distribution
The filtered and cooled lubricating oil is directed to different parts inside the engine, such as bearings, gears, sliding surfaces, etc. The distributor and pipeline network are responsible for delivering the oil to various parts along the designed path.
5. Forming an oil film
The lubricating oil forms a uniform oil film on the surface of the moving parts. This film helps to reduce friction, cool the surface of the parts, and form an effective lubrication effect.
6. Lubricating oil recovery
The lubricated oil flows back to the oil tank along the designed recovery path. This ensures that the lubricating oil can be recycled and takes away some heat and pollutants during the return process.
7. System monitoring and regulation
The lubricating oil system is equipped with various monitoring devices for real-time monitoring of parameters such as temperature, pressure, flow and quality of the lubricating oil. Pressure regulating valves and other regulating devices ensure that the oil pressure and other key parameters in the system are maintained within the appropriate range.
The goal of the entire workflow is to ensure that the lubricating oil forms a good lubrication effect inside the turbine, reduce friction between components, maintain appropriate temperature, remove pollutants, and ensure the reliability and life of the system.
If you need:，Please contact us. INZOC, well-known domestic oil monitoring system provider!