通流

• After researching the part thermal equipments and systems include heaters , steam leakage and receiving systems , low pressure drain system etc , and computing the efficiency of the systems , find out the better choice of the imported assemblies than the domestic assemblies in parameter and the disfigurements in design and making . based on the above , point out the measure to progress them . according to the analysis , we can get some measures to increase the economical level of the systems and save more energy
  对局部热力设备及热力系统进行分析研究，包括:加热器设备、漏汽及回收系统、低加疏水系统、主、再热蒸汽系统以及凝汽器等部位；并计算汽轮机本体高、中、低压缸效率，借此着重对汽轮机通流部分进行了剖析，找出国外进口机组动、静叶栅、叶型的选择比国产机组先进性以及国产机组在通流部分设计和制造中的诸多缺陷，并且指出了改进的方向，为机组提高热经济性、节能降耗奠定了理论基础。
• In this way , when obturation cubage leave absorb oil cavity it connects the eduction oil cavity with the v trough and with the increasing of the turning angle , the size of the cross section of v trough become bigger and bigger , which make the pressure between the cavity of two blades much higher and higher , and until it completely connects the eduction oil cavity , it reaches the pressure of the eduction , and it can effectively reduces the fluid noise caused by high pressure return flow
  这样，当密闭容积离开吸油窗口之后，通过v型尖槽逐渐与排油窗口连通，随着转角的增加， v型尖槽通流截面积逐渐增大，这就使两叶片间容腔内的压力逐渐升高，直至完全接通排油窗口时，才升压达到压油腔的压力，这样可以有效地降低因高压回流而引起的流体噪声。
• At the same time , when the gas flow passes the flow area of the inlet valve at a high speed , turbulent throw - outs will appear and lead to the generation of high frequency noises . as the flow area of the inlet valve keeps changing , the turbulent noise is of fixed frequency range ( generally over 1 000 hz )
  与此同时，当气流以高速流经进气门流通截面时，产生湍流脱体，导致高频噪声的产生，由于进气门通流截面是不断变化的，因此湍流噪声具有一定的频率范围，主要集中在1000hz以上的高频范围。
• In this article , based on many references and thesis all over the world , the cleaning method of the steam path for steam turbines is suggested accordingly , some kinds of practical cleaning methods is suggested on the base of the performance of the steam turbines and the maintenances on spot in luohuang power plant
  本课题在参阅多篇技术资料以及相关的论文基础上，概述了国内外关于汽轮机通流部分清洗的各种基本方案。同时结合华能珞璜电厂汽轮机实际运行情况以及现场检修状况，提出了实施性较强的清洗方案。
• In this article , based on the thermal calculation and the fluid functions , the steam path for steam turbines is theoretically analyzed . many data related with the fouling and structures is researched . according to the method can not only discovers the fouling generation in time , but also proceed the great cleaning project
  本课题在研究了汽轮机通流部分结垢情况、具体清洗方案以及参阅多篇技术资料后提出利用有关流动以及热力计算的基本方程和公式对汽轮机通流部分进行理论上的模拟分析，根据此方法不仅能对于结垢情况及早发现提出问题，而且能较好的进行清洗方案设计。
• Many researches have been done with the simulation model . it was found that some structure parameters such as the diameter of the driving piston , the diameter of the buffer piston , the stiffness of the valve spring , the compress ratio of the buffer piston , and the flux area of the solenoid valve etc . have great effect on the performance of the haecvvs . for certain performance demand of the variable vale system , there is a most suitable combination for the structure parameters
  通过对电控可变气门系统的主要结构参数，如动力活塞直径、缓冲活塞直径、气门弹簧刚度、缓冲活塞实际压缩比、电磁阀通流面积等参中压共轨电控柴油机可变气门系统的研究数对电控可变气门系统启、闭特性的影响规律的研究发现，动力活塞直径、气门弹簧刚度、电磁阀通流面积对电控可变气门系统启、闭性能起着决定性的作用，对于一定的气门启闭规律要求，这些结构参数存在一组最佳值。
• The metal oxide varistors ( mov ) , as the core organ , made under japanese technology license . it have good response to steep front surge , excellent volt - amper characteristics and high discharge capability , which provides a very consistent protection merit at steep front surge , lightning surge and seitching surge , and enhances protective capability
  它具有良好的陡波响应能力、卓越的非线性伏安特性和巨大的通流容量，在尖顶波、操作波和雷电波下均有优异的保护能力，工作性能几乎不受波形影响。