查询词典 turbine-driven

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。

In order to im-prove the dynamic response characteristics of the system,it's necessary to separate the governing oilpipes of the control signals and to eliminate the interfere of the action of the actuator.The results isalso suited to the reheat and double extraction steam turbine governing system design.

由于执行机构动作的相互干扰，使得系统的稳定性降低，响应特性恶化；因而必须尽量消除执行机构动作之间的相互干扰，使执行机构的控制油路独立开来；这一结论也适用于两次调节抽汽透平和中间再热透平调节系统的设计。

Aiming at the low efficiency and laggard running of domestic double extraction turbine, flow passage is modified with four-dimensional technology,then the output has been increased,coal cost has been reduced,and also hidden safety trouble of unit has been removed,in the end,the safe and economical operation capacity of the unit has been improve

针对国产200 MW双抽供热汽轮机效率低、安全运行水平落后的状况，采用全四维技术对通流部分进行改造，提高了机组的出力，降低了机组的煤耗，消除了机组中存在的安全隐患，提高了机组安全经济运行的能力。

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。

A supercritical heat-supply unit with a double reheat employs steam extraction from a low-pressure turbine cylinder for supplying process heat.

针对二次再热超临界供热机组采用低压缸分缸抽汽供热的特点，利用等效热降理论，进行分析与数学推导，得出了该类型机组抽汽等效热降和抽汽效率的计算方法，形成该类型机组的经济性定量分析数学模型，从而将等效热降理论的应用范围拓展到二次再热供热机组。

Turbine Cascade; Curving Blade; Axial Fan; Experimental and Numerical Simulation

透平叶栅；弯曲叶片；轴流风机；实验和数值模拟

Products are: no power turbine ventilation (360,500,600,680,880, and so on), DWT roof fan, roof fan, after years of development and innovation, have been a number of large enterprises and design units as Designated product.

产品有：无动力涡轮通风器( 360，500，600，680，880等)、DWT屋顶风机、屋脊风机，经多年的开发创新，已被多家大型企业和设计单位定为指定产品。

In this case, the brake shall not become a fire hazard for the wind turbine.

这种情况下，制动不得产生危害风机的火灾危险。

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。

Because of these factors, calibration of turbine flowmeters must be carried out under operational conditions.

由于这些因素，校准涡轮流量计必须开展业务的条件。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。