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The back pressure of condenser makes a great impact on its thermal efficiency and the economy of thermal system. However, its main task is to set up and maintain a certain vacuum degree for air extraction outlet of steam turbine.

汽轮机的背压对其热效率和热力系统的经济性有很大的影响，而凝汽器的主要任务就是为汽轮机排汽口建立并维持一定的真空度。

The heat efficiency of the condensing steam turbine and the middle extraction steam turbine are analyzed by using heat economics and energy lever principles.

利用热经济学和能级原理对凝汽式汽轮机和中间抽汽式汽轮机的热效率进行了分析。

Mathematical Model of governing system's dynamic characteristicfor condensing turbine、 reheat turbine、 extraction turbine and power frequency turbine are introduced in this paper.

文摘：介绍了研究凝汽式汽轮机调节系统、中间再热式汽轮机调节系统、调整抽汽式汽轮机调节系统及功频电液调节系统的动态特性的数学模型。

Based on the characteristics of installation of the imported 600 MW reheat extraction condensing turbine in Guohua Huanghua Power Plant of Hebei,and the particularity of electric power construction,this paper presents relevant techniques and improvement measures to insure installation quality.

针对河北国华黄骅发电厂引进型600MW 中间再热抽汽凝汽式汽轮机安装的特点，结合电力建设安装的特殊性，提出了有针对性的安装工艺和改进措施，确保了机组安装质量。

Rated at extraction conditions, one pump is running, because the cycle of water to reduce the system's water resistance decrease the flow of water pumps 12274T / H, head will drop to 15.0-16.0 m, in the extraction steam turbine at the maximum operating conditions, the recycled water to meet the system requirements to run a pump, because of substantial reduction in the volume of water supplied, so that substantially improve pump head, a direct result of the cooling tower water gushing, increase淋水device with a flow rate of the sink, fill up water in the hot淋水exchange reduce the time and reduces the cooling effect of cooling towers.

在额定抽汽工况下，一台水泵运行，由于循环水量减少、系统的水阻下降，水泵的流量12274T/H，扬程将下降至15.0-16.0米，在汽轮机在最大抽汽工况时，为满足循环水系统要求运行一台水泵，由于供水量大幅度减少，使水泵扬程大幅度提高，直接造成冷却塔涌水，加大淋水装置配水槽的流速，水流在淋水填料上热交换的时间减少，降低了冷却塔的冷却效果。

The two variables are used to forecast cavitation in feed water pump and send an alarm signal, which is used to guide the feed water pump's process control system to prevent cavitation.

以这两个量为基础，汽蚀诊断模型能实时预报给水泵的汽蚀状态。

Lightened on the turbine valve controller designed with feedback linearization theory and introduced nonlinear tracking-differentiator, a novel nonlinear PID valve controller was proposed. This controller can fit not only to plant with some model error and random disturbance in variable, but also to the variety of the structure and operating conditions of power system. The transient and dynamic characters of the controller are both satisfactory when big and small disturbances added. The good performance, wide stable margin and heavy robustness of the valve controller proved that it is a great practical application to enhance the stability of power system.

结合反馈线性化法汽轮发电机组的汽门控制研究成果，引入非线性跟踪微分器和非线性度变换控制，进行了发电机组的非线性PID汽门控制器设计，该控制器不仅能适应一定的系统模型误差与变量的不确定性干扰，而且对于电网结构和运行工况的变化有着较强的适应能力，在受大、小扰动的情况下，呈现了较好的暂态特性和动态品质，具有较好的控制品质、较高的稳定裕度和较强的鲁棒性能，有利于进一步改善电力系统的稳定性，显示了其较强的实用性。

At the top of Steam-cabinet, there is a reasonable designed of the fumaroles, So when in the steam cooking process, the temperature inside of the Steam-cabinet will be kept uniformity.

蒸柜顶部有设计合理的喷汽孔，使蒸柜内的蒸汽温度在蒸煮过程中保持均匀，这样蒸柜内的冷凝水及汽既可排走，又不形成回流现象。

Because of the location of the installation guide lower, together with special structure, guide pulley itself has a strong anti-cavitation characteristics, and therefore to some extent, solve the water pump impeller cavitation and lack of submerged deep questions.

由于导轮安装的位置较低，加上结构特殊，导轮本身具有很强的抗汽蚀特征，因而在一定程度上可解决水泵汽蚀及叶轮淹深不足问题。

After putting 2×135 MW units of Guodian Suqian Thermal Power Co Ltd into operation, the exhaust steam pressure and temperature from the high-pressure cylinder in operation of the said turbines is more far higher than the designed value.

国电宿迁热电有限公司2×135MW机组N135-13.24/535/535型超高压、一次中间再热、双缸、两排汽、凝汽式汽轮机，自2005年2月和2005年6月分别投产后，额定负荷时高排压力和温度均与设计值偏差较大。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。