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首页> 外文期刊>Thermal engineering >Steam Pressure's Influence in the Condenser on the Efficiency Indicators of the T-100-12.8 Turbine When Operating with a Fully Closed Diaphragm According to the Thermal Diagram
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Steam Pressure's Influence in the Condenser on the Efficiency Indicators of the T-100-12.8 Turbine When Operating with a Fully Closed Diaphragm According to the Thermal Diagram

机译：蒸汽压力在通过根据热图操作完全闭合隔膜时T-100-12.8涡轮机的效率指示器的影响

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摘要

On the example of the T-100-12.8 turbine, it is shown that its efficiency in winter (with a fully closed diaphragm) is significantly influenced by the state of the vacuum system and ejectors. An analysis of the effect of the vacuum in the condenser on the efficiency of the cogeneration turbine with a completely closed cogeneration diaphragm and the operation of the turbine according to the thermal schedule when the steam flow rate in the low-pressure part does not exceed 60 t/h is presented. In this case, the pressure in the condenser depends on the tightness of the turbine vacuum system, the state of the ejectors, and the water temperature at the inlet to the condenser and is determined by the characteristics of the ejector. With a completely closed cogeneration diaphragm, the pressure in the condenser does not depend on the steam and circulating water consumption nor, within certain limits, on the state of the heat exchange surface (tube fouling). The change in the turbine capacity in modes with a fully closed diaphragm depends on the deviation of the condenser vacuum from the standard value nonlinearly. At low steam pressure (low temperature of the circulating water at the inlet to the condenser), the power change is more significant than at increased pressure. Power losses increase with an increase in the steam pressure in the lower heating extraction, a decrease in the temperature of the circulating water, and an increase in air inleakage into the condenser. With the diaphragm fully closed, the standard pressure in the condenser is maintained by one ejector if the air inleakage does not exceed the standard value of 15 kg/h. When two ejectors are switched on, the standard vacuum in the condenser in this case can be maintained if the air inleakage is less than 25 kg/h. When the steam consumption in the LPP is more than 80 t/h, the change in the turbine power becomes proportional to the change in the steam pressure in the condenser.
机译：在T-100-12.8涡轮机的示例中，示出其在冬季的效率（具有完全闭合的隔膜）受真空系统和喷射器的状态的显着影响。在低压部件中蒸汽流速不超过60的热量调速时，电置涡轮机真空对冷凝器效率的影响。呈现t / h。在这种情况下，冷凝器中的压力取决于涡轮机真空系统的紧张性，喷射器的状态和进气器的水温并由喷射器的特性确定。通过完全封闭的热电联产隔膜，冷凝器中的压力不依赖于蒸汽和循环用水量，而不是在一定限度内，在热交换表面（管污垢）的状态下。具有完全闭合隔膜的模式中的涡轮机容量的变化取决于非线性地从标准值偏离的冷凝器真空。在低蒸汽压力下（在入口处的循环水的低温为冷凝器），功率变化比增加压力更大。随着较低的加热萃取中的蒸汽压力的增加，电力损耗增加，循环水的温度降低，以及空气泄露到冷凝器中的增加。随着隔膜完全关闭，如果空气漏报不超过15kg / h的标准值，则冷凝器中的标准压力由一个喷射器维持。当两个喷射器接通时，如果空气漏报小于25kg / h，则可以保持冷凝器中的标准真空。当LPP中的蒸汽消耗超过80t / h时，涡轮功率的变化变得与冷凝器中的蒸汽压力的变化成比例。

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