Steam turbine is widely used in industry now, many people also have many questions about steam turbine. Today, several common problems are summarized to answer them. Take a look.
1. What are the components of the turbine body?
The turbine body is composed of static and rotational parts. The stationary part includes cylinder, separator, nozzle and bearing, etc., while the rotating part includes shaft, impeller, blade and coupling, etc. In addition, there are steam seals.
2. Working principle of lubricator in turbine oil system
When the pressure oil is spewed out at high speed through the nozzle, the oil in the oil tank is brought into the diffusion tube through the filter by the suction effect of free jet. After the diffusion tube slows down and increases the pressure, it is discharged from the diffusion tube with a certain oil pressure.
3. What is the function of steam turbine nozzle?
The function of the steam turbine nozzle is to convert the heat energy of steam into kinetic energy, that is, to expand the pressure of steam, increase the flow rate, and do work by pushing the blade sprayed out in a certain direction.
4. What is the role of condensate pump air balance pipe?
When there is a vacuum in the condensate pump, it can be discharged to the condenser through the air pipe to ensure the normal operation of the condensate pump.
5. The main cause of turbine bearing bush damage?
1) Bearing oil failure;
2) Strong vibration of unit;
3) Poor bearing bush manufacturing;
4) Oil temperature is too high;
5) Deterioration of oil quality.
6. What are the hazards of increasing the main steam pressure when the main steam temperature of steam turbine remains unchanged?
The main hazards are as follows:
1) The steam humidity in the last stages of the unit increases, which worsens the working conditions of the moving blades in the last stages and aggravates water scouring. For high temperature and high pressure units, the main steam pressure increases by 0.5mpa, and the humidity increases by about 2%.
2) As the enthalpy drop of the regulating stage increases, the moving blades of the regulating stage will be overloaded
3) Will cause the stress of the main steam bearing parts to increase, will shorten the service life of the parts, and may cause the deformation of these parts, so as to damage the parts.
The above is the main content of the common problems about steam turbines. Hope to help you, if you have other questions about steam turbines, welcome to pay attention to us, we regularly update the professional knowledge about steam turbines for your reference.
