9907-167 505E Digital Governor for Extraction Steam Turbines

9907-167 The working principle of steam turbine is an externally fired rotary machine that converts the heat energy of steam into mechanical work. After the steam from the boiler enters the turbine, it successively passes through a series of annular nozzles and rotor blades to convert the heat energy of the steam into the mechanical energy of the turbine rotor rotation. Steam in the steam turbine, in different ways of energy conversion, it constitutes a different working principle of the steam turbine.

9907-167 The main structure of steam turbine includes rotor and stator. The rotor comprises a main shaft, an impeller, a blade and a coupling, etc., and the stator comprises an inlet part, a cylinder, a separator, a stator blade and a bearing, etc. When the steam passes through the nozzle, the pressure and temperature of the steam decrease due to the gradual reduction of the cross-sectional area of the nozzle, while the speed increases. When the high-speed steam flows through the moving blade, because the direction of the steam is matched with the curved shape of the moving blade, the moving blade is rotated by the impact force of the steam, thus converting the heat energy of the steam into mechanical energy.

The working process of steam turbine can be divided into two types: impulse action principle and reaction action principle. The principle of impulsive action means that the steam only produces a pressure drop in the nozzle, and the pressure drop is no longer generated in the moving blade, and the moving blade is only rotated by the impact force of the steam. The principle of reaction means that the steam not only produces a pressure drop in the nozzle, but also produces a pressure drop in the moving blade, and the moving blade is not only affected by the impact force of the steam, but also by the reaction force generated by the expansion and acceleration of the steam in the moving blade.

According to the structure, working principle, thermal performance, use, the 9907-167 number of cylinders, steam turbines can be divided into a variety of types. According to the structure, it can be divided into single-stage steam turbines and multistage steam turbines, single-cylinder steam turbines at all levels installed in a cylinder, and multi-cylinder steam turbines at all levels installed in several cylinders. According to the working principle, it can be divided into impulse steam turbines where the steam is mainly expanded in the nozzles (or static blades) at all levels, reaction steam turbines where the steam is expanded in both the static blades and the moving blades, and velocity turbines where the kinetic energy after the expansion of the steam in the nozzles is utilized on several rows of moving blades.

Steam turbine is one of the main equipment in modern thermal power plants, and it is also one of the important equipment in shipbuilding, metallurgy, chemical industry and other industrial sectors. It has a wide range of applications, including power generation, industrial processes, and Marine propulsion. With 9907-167 the development of technology and the improvement of environmental protection requirements, steam turbines are constantly undergoing technical improvements and upgrades to improve efficiency and reduce emissions.