第三章：管道振动原因分析。
Part three: the analysis of the cause for the pipeline vibration.
介绍了消减发动机管道振动的结构优化方法。
The paper deals with structural optimization for reducing vibration of engine pipeline.
摘要：主蒸汽管道振动严重影响机组运行安全。
Vibration of main steam pipe seriously affect the unit's running security.
研究结果对实际埋地管道振动的研究具有指导意义。
分析了通常引起往复式压缩机气体管道振动的原因及其消振方法。
The reason of the vibration is analyzed and the control methods are proposed with the vibration data collected.
大型往复式压缩机功率大、占地面积大，管道振动问题也更为突出。
The pipe vibration problem is especially serious in large reciprocating compressor because of its big power and large bulk.
最终分析了两种耦合对载流管道振动的影响机理及流速变化对管道振动稳定性的影响。
The vibration characters in two types of coupled problems such as the Poisson's and the junction interaction in liquid-filled pipes, and the pipe vibration stability are analyzed.
研究了获取管道振动噪声干扰特征的方法，介绍了基于加速度传感器的管道振动信号的采集。
A method of acquiring pipeline vibration noise is studied, and sampling of pipeline vibration signals using an acceleration sensor introduced.
提出了减小天然气压缩机管道振动的结构方案及其相关理论，对消减气流脉动具有重要意义。
This article makes some plan and correlation theory to reduce natural gas compressor "s piping vibration. It makes much sense to reduce gas pulse."
研究流体的速度和压力对载流三维管道振动频率的影响，并且探讨管道失稳时流体的临界速度。
This paper deals with the influence of fluid velocity and pressure on vibration frequency of stereoscopic pipe, and investigates the critical velocity of fluid in unstable case.
压电式对于管道振动十分敏感，而在一定范围内差压式的输出信号几乎不受管道振动干扰的影响。
Third, the piezoelectric method is sensitive to pipe vibration, whereas the differential-pressure method is hardly affected by this kind of disturbance to some extent.
这些规定应包括有出现如高水位报警，金属温度急剧下降或蒸汽管道振动等征兆时必须采取的措施。
These regulations shall include the necessary measures for such symptoms as high water level alarming, metal temperature sharp fall or steam pipe vibration.
水中掺入空气不但会影响管道的水力特性，同时是造成管道振动、噪音，甚至异常破坏的主要原因。
Mingling of air into water would not only affect the hydro-dynamical characteristics of pipe flow, but also cause vibration noise, and even abnormal damages in pipes.
飞机液压系统由于油压脉动引起的管道振动是近十多年来国内外航空工业界极为重视的工程实际问题。
The pipeline vibration caused by pressure surge in aircraft hydraulic system is an important engineering problem both to domestic and foreign aviation industries in recent decades.
对存在严重振动问题的某天然气压缩机的进气管路进行了气流脉动和管道振动分析，提出了管路调整措施。
The analytical study on the gas pulsation and piping vibration in a natural gas pipeline was presented, based on which the measures are suggested to control the excessive vibration.
本文在分析了由活塞密封环、气阀及机组管道振动引起压缩机产生故障原因的基础上，提出了相应的解决办法。
Based on the analysis of the failure cause of piston packing ring, air valve and unit pipeline vibration, the methods to solve are proposed.
管道系统中的压力脉动会对管道系统中造成许多危害，例如它会降低泵的工作效率、增加额外的能耗、产生噪声，使管道附件的工况变坏和造成管道振动等等。
The pressure oscillation in piping system can lower the efficiency of the pump, cause the additional consume of energy and emit noise, deteriorate the working condition of the accessory.
流体运动的不稳定性造成压力冲击，引起管道与设备振动。
Unsteady flowing has pressure lash, it can cause the quake of pipe and equipment.
针对山东黄岛发电厂3号机组再热管道出现的异常大幅度振动，进行了原因分析；
Regarding the abnormal large vibration of reheat steam pipe of unit 3 for Shandong Huangdao Power Plant, the causes were analyzed.
本文提出了对包含有流动流体的管道自由振动频率的一个计算方法。
In this article, a calculation method is put forward for free vibration frequency of a pipe which contains flow fluid.
对海底饱和砂土发生液化时，埋于其中的管道运动规律进行了探讨，利用振动台上进行了模型试验。
The movement manner of pipeline buried under saturated sandy soil is studied, when soil is liquefied, by making model test using vibration bench.
输流管道耦合振动问题是近五十年来管道流体力学、非线性动力学等领域研究的热点。
The question of coupled vibration of fluid-conveying pipes is hotspot in the research areas of pipeline fluid Mechanics and Nonlinear Dynamics for late fifty years.
研究了参变管道在随机交通荷载作用下的振动响应问题。
The vibration response of the pipelines with changing parameters under random traffic loads has been studied in this paper.
调节阀的流体振动会造成阀杆疲劳断裂与阀碟的损坏，以及整个阀门及管道系统的共振。
Flow vibration in turbine control valve is the major consequences of valve stem rupture, valve disc damage as well as the resonance of valve and its pipings.
利用有限元软件AN SY S和声学边界元软件SY SNO ISE对U型管道结构的受激振动与辐射声场进行分析。
Vibrations of an excited U-shape pipe and its radiation field are investigated by using FEM software ANSYS and acoustic BEM code SYSNOISE.
如果振动是由于管道中的水锤撞击而引起，在快速关闭阀附近安装型号合适的水锤消除器就能避免。
If the vibration is caused by the occurrence of shock in the piping system it can be avoided if a properly sized water hammer arrester is installed near the quick closure valve.
用半解析法求解竖向地震作用下充满液体管道的弯曲振动反应。
The bending vibration of a pipe full of liquid is solved by semi analyze method during earthquake.
着重分析了海底(悬空)管道在水流作用时诱发的振动效应。
The vibration effect induced by current acting on suspended submarine pipeline is analyzed.
着重分析了海底(悬空)管道在水流作用时诱发的振动效应。
The vibration effect induced by current acting on suspended submarine pipeline is analyzed.
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