A steam turbine is a rotary power machine that converts the energy of steam into mechanical work. It has a rotor (the general name of the rotating part, including: main shaft, impeller, blade, coupling and its accessories) and a stator (the general name of the stationary part, including ：Cylinder, steam inlet mechanism, exhaust mechanism, condenser, shaft seal system, bearing and cranking device, etc.), mainly used as prime mover for power generation, and can also directly drive various pumps, fans, compressors and ships Propellers, etc., can also use steam turbine exhaust or intermediate extraction to meet the heating needs of production and life.

1. The steam turbine is used for the 12MW high temperature and high pressure condensing steam turbine for the recovery of coke dry quenching waste heat in the iron and steel industry; the fresh steam is a gas-filled condensing steam turbine with saturation temperature, the minimum steam pressure is only 0.45MPa, and the inlet steam temperature is the saturation temperature. 1.5MW-6MW waste heat power generation steam turbine unit.

2. The steam turbine is used in the refining and chemical industry to drive high-speed fans and compressors. The steam pressure is 0.98MPa, the inlet steam temperature is 260°C, and the rated speed is 12600 rpm condensing steam turbine.

3. Steam turbines are used to drive various boiler feed pumps and steam turbine units for fans with an installed capacity of less than 100MW. At present, our company has 8 series and more than 30 types of steam turbines. Small steam turbines have unique advantages that other prime movers cannot replace: It can meet the needs of users for power generation and steam consumption, and the comprehensive utilization of heat energy has high efficiency and low power generation costs; it can also meet the requirements of sudden power outages in the power grid, and the process does not allow motorized equipment to stop working.

4. The steam turbine is used in the circulating water heating system of the power plant. In winter, the circulating water will be used for regional heating and heating, which can bring huge economic benefits to the power plant. In the power plant, the circulating water pump is replaced with a high-lift water pump (generally, a high-lift water pump is added), which increases power consumption; on the other hand, if the heating temperature is simply relied on circulating water in the northern region, the heating temperature is also low and often needs to be supplemented Some new steam is used to increase the temperature of the hot water supply. In this case, if a small back pressure industrial steam turbine is used to drive the circulating water pump during the system transformation process, and the steam after the work is used to heat the circulating water, the heating system can save The power consumption of the pump motor can increase the temperature of the circulating water, thus accomplishing two birds with one stone.

5. The role of steam turbine instead of low-pressure heater, high-pressure deaerator and sliding pressure deaerator. The exhaust steam of the steam turbine is supplied to the low-pressure heater or inlet heat exchanger to heat a large amount of supplementary demineralized water to increase the water temperature to a constant value. Leading to the high-pressure deaerator, a small amount of relatively high-value steam can be used in the high-pressure deaerator to achieve the deaeration effect, which eliminates the uneconomical of the large temperature difference caused by the low temperature of a large amount of supplementary water, and can also reduce The number of low-pressure heaters stabilizes the operation of high-pressure deaeration. Thereby improving safety and reliability, increasing the economy of energy cascade utilization, reducing plant power consumption, and achieving good results.