Wide application of the hottest industrial steam t

  • Detail

The wide application of industrial steam turbines

in industrial production, steam turbines are directly used as prime movers to drive some large mechanical equipment, such as large fans, feed pump compressors and other high-power equipment. The steam turbines used for this purpose are called industrial steam turbines

steam turbines driving pumps, blowers, compressors and other machinery or power generation steam turbines closely related to industrial production processes. Industrial steam turbine can not only use fuel or steam generated in boiler by by-product heat energy in various industrial production processes, but also use residual steam in production processes. Industrial steam turbines are widely used in modern industrial enterprises. The main reason is that in all production processes that require both power and heat, or have by-product heat energy, reasonable allocation of industrial steam turbines can improve energy utilization and achieve the purpose of energy saving. Industrial steam turbine 4, SEBS foaming material utilization machine has a high speed and a large power application range, the speed can be up to more than 20000 rpm, and the power can be from several thousand watts to more than 100000 kW. It can directly drive the pumps, blowers, compressors and other machinery in the production process, and can smoothly and sensitively coordinate with these driven machinery to change speed, so as to adapt to the changes of working conditions in the production process. This is incomparable to other power machines. The steam turbine has an axisymmetric high-speed rotating part, so it can run smoothly, wear little and run continuously for a long time. It is of great significance to build a new international competitive advantage and meet the requirements of modern production processes

type industrial steam turbines can be classified according to the driving object, driving mode and thermodynamic system principle. According to the driving objects, it can be divided into: industrial driving steam turbines, such as those used to drive pumps, compressors, blowers, etc.; industrial power generation steam turbines, such as those used to drive generators in industrial power plants that are closely related to industrial production processes in terms of heat source, steam source or heat supply. According to the driving mode, it can be divided into direct drive and indirect drive (driven by reducer). According to the principle of thermodynamic system, it can be divided into: condensing turbine (the exhaust steam of the turbine flows into the condenser), back pressure turbine, extraction turbine and multi pressure turbine. In addition to directly utilizing the steam generated by the boiler, the multi pressure steam turbine also introduces the residual steam in the production process in different pressure sections to work together

characteristics industrial steam turbines have different working conditions and operation modes due to different application fields. The main technical specifications such as steam parameters, power and speed vary in size and structure types. Some units require long-term continuous operation, with relatively stable load and small change range; some units operate intermittently, with intermittent start and stop, and the load varies greatly from high to low. Some units are connected in series in the complex production process system, which is the key equipment affecting the work of the whole system, and the requirements are strict; others only play an auxiliary and standby role in the system, which makes the share of plastic packaging in the market not high. Some units are used for complex systems with high automation of activation, shutdown, operation, monitoring and protection facilities; some units are used for relatively simple systems, which are mainly operated and monitored manually. The environmental conditions are relatively poor. Compared with the power station steam turbine, the industrial steam turbine also has its own characteristics in design and manufacturing: special treatment should be given to the industrial steam turbine for special purposes, and corresponding product technical standards should be formulated. It is necessary to technically solve the corresponding special problems according to the specific working conditions, such as rotor dynamics problems such as strength, mechanical vibration and stability caused by high-speed and variable speed; work reliability problems corresponding to the safe and economic operation of the system in the production process; anti-corrosion, explosion-proof, moisture-proof and dust-proof problems related to environmental conditions. In terms of product structure, it is necessary to solve the "non stereotype" of products caused by a wide range of users and different technical specifications and requirements, and improve the degree of serialization, standardization and generalization. Adopting "building block" principle and group technology to design and manufacture industrial steam turbine is an effective method to solve the problem of "indefiniteness". Meet the special requirements of industrial steam turbine in terms of reliability and operation convenience. Although the thermal efficiency of industrial steam turbine itself is important, the overall economy of the industrial production system it serves is more important. Development trend with the development of chemical industry, oil refining, petrochemical industry, metallurgy, light industry, textile and other industries, as well as energy conservation, industrial steam turbines will be more widely used. With the development of petrochemical and other production process systems towards large-scale and high-efficiency, the steam parameters and power level range of industrial steam turbines will be correspondingly improved. In order to save energy better and make rational use of low-grade waste heat, the development and utilization of small industrial steam turbines with steam or other working fluids is receiving increasing attention

Copyright © 2011 JIN SHI