排汽系统

大型直接空冷机组排汽系统特性研究

Study on Characteristics of Exhaust Steam System of Direct Air-cooled Unit

在Matlab平台上开发了低压排汽系统的气动优化平台。

An aerodynamic optimization system for the low pressure exhaust hood has been developed on the Matlab platform .

将模型排汽系统的优化结果应用于带有末三级叶片的真实排汽系统，结果表明排汽系统优化后在THA工况下，总压损失系数减少0.1，静压恢复系数提高0.1。

The optimized geometry is used in the real exhaust hood with the last three stages turbine . At the THA work condition , the total pressure loss coefficient is reduced by 0.1 and the pressure recovery coefficient is improved is by 0.1 .

汽轮机低压排汽系统气动性能分析

Aerodynamic analysis of steam turbine LP exhaust systems

冷凝式汽轮机排汽系统是将低压缸末级出口余速动能加以利用的关键部件。

Exhaust system is of great importance to the overall performance of the steam turbine .

汽车排汽系统用管。

Pipes for Motorcar Exhaust System .

本文采用实验测量和数值模拟两种手段研究某型号汽轮机低压排汽系统的小尺寸模型内部的流动结构。

The flow structure in a low pressure exhaust hood scaled model is investigated through the experimental measurement and numerical simulation in this paper .

排汽系统中产生的压力恢复使得透平末级的出口压力低于冷凝器的压力，有利于提高机组的出功能力。

This pressure recovery gives the turbine an effective back pressure that is lower than the condenser pressure , thus increasing the turbine work .

计算结果表明排汽系统的压力恢复主要由扩压器获得，而排汽蜗壳中有较大的总压损失。

The results of numerical simulations indicate that pressure recovery is mainly achieved in the diffuser , and most of the total pressure loss occurs in the volute .

研究汽轮机低压排汽系统内部的流动结构和理解其内部流动损失机理为研制高性能的排汽系统提供了坚实的基础，而探讨排汽系统气动优化设计方法有利于进一步完善汽轮机的设计体系。

Studying the flow structure and understanding the flow loss mechanism of the steam turbine low pressure exhaust hood provides a firm foundation for developing high performance low pressure exhaust hoods .

汽轮机低压排汽系统是汽轮机通流部分的一个重要部件，它的主要作用是对汽流扩压把汽流的余速动能部分的转化为压力能。

The low pressure exhaust hood is an important through-flow component of a steam turbine . Its main function is to partially recover the turbine leaving kinetic energy into potential energy .

根据实验测量工况，搭建了排汽系统测试实验台，并对测量仪器进行安装、调试，通过实验测量取得了较好的结果。

The test rig is constructed at the experimental condition , and the measurement equipments used for the experiment are installed and adjusted . The satisfactory results are gained from the experimental measurement . 2 .

采用热线风速仪在均匀来流条件下测量排汽系统扩压器出口和排汽蜗壳出口平均速度，并在导流环和轴承锥壁面上布置压力孔测量壁面压力。

HWA is used to measure the mean velocity at the diffuser and exhaust volute outlet locations at the uniform inlet condition . Static pressure tabs are located on the flow guide and bearing cone to measure wall static pressure .

本文对热力发电厂的汽轮机排汽冷却系统进行了评估。

In this paper , two closed-cycle cooling systems at the thermo-power plants are appraised .

小型热电背压排汽降温系统的能源效益分析

Analysis on energy benefit of dropping temperature system of exhausting steam form backpressure turbine in a small electric and thermal power plant

基于ARM-Linux的汽轮机排汽湿度监测系统

An embedded monitor system for wetness fraction of turbine steam based on ARM-Linux

以双区加热法湿度测量探针为核心，研制了汽轮机排汽湿度在线监测系统。

With the core of double region heating method , the system of on line monitoringwetness fraction in steam turbine exhaust is developed .

排汽管道布置形式和内部结构是直接空冷排汽系统优化设计的基础，直接影响各蒸汽分配管内的流动阻力和流量分配。

The optimal design for exhaust ducting mode and internal structure in direct cooling exhaust duct system is very important for us .

采用PIV测速技术对排汽蜗壳不同周向平面和出口平面进行了流场测量，捕捉到了排汽系统内不同特征平面上的流动结构。

PIV is used to measure the flow field at the different circumferential planes and the outlet plane , and the vortices structure is captured .

通过三个典型截面上流场分析和整个排汽蜗壳内的涡系特征模式分析发现，通道涡和导流环弧背涡是排汽系统内引起能量损失的主要来源。

According to the flow field at three typical planes and vortex character analysis , passage vortex and vortex behind the flow guide is the main contributor of the energy loss in the exhaust hood . 4 .