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输气管的雷诺数一般高达106~107，是输油管的10~100倍。The Reynolds number of the pipeline is generally as high as 106~107, which is 10~100 times that of the pipeline.
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更多“输气管的雷诺数一般高达106~107，是输油管的10~100…”相关的问题
第1题
输气管的管壁粗糙度一般比输油管小。The roughness of the pipe wall is generally smaller than that of the pipeline.
第2题
输气管中生成水合物的真实情况The real situation of hydrate formation in gas pipeline：（）
A、气体在管内高速度流动，不可能在某一点生成水合物，而往往在数十米的管段上形成水合物。The gas flows in the tube at a high speed, so it is impossible to form hydrate at a certain point.
B、形成水合物会改变压降曲线形状。Hydrate formation changes the shape of the pressure drop curve.
C、生成水合物时伴随有热效应，要放出热量。熔解水合物时，要吸收热量。水合物的熔解热为335KJ/kg，对管线温降曲线有影响。The formation of hydrate is accompanied by a thermal effect, to release heat. When you melt hydrate, you absorb heat. The melting heat of hydrate is 335KJ/kg, which affects the temperature drop curve of pipeline.
D、此外，还有不少难以考虑周全的因素，如：局部阻力、气流漩涡、结晶中心等，因而有些书上只标明水合物的可能形成区。In addition, there are many difficult to consider factors, such as: local resistance, airflow vortex, crystallization center, and so on, so some books only indicate the possible formation area of hydrate.
第3题
干线输气管上布置压气站既要详尽地考虑工艺问题、地理...
干线输气管上布置压气站既要详尽地考虑工艺问题、地理地质问题，也要考虑经济问题，甚至与其它部门相联系的社会问题，力求做到方便于压气站的建设与管理，让整条管线发挥出最大的效益。站址不预先固定的压气站布置意味着仅仅根据水力条件来计算，其结果必然是理想化的，但其优点是便于我们了解布置压气站的基本方法和一般规律。In order to facilitate the construction and management of compressor stations, it is necessary to take into account not only the technological and geological problems, but also the economic problems and even the social problems associated with other departments. The unfixed layout of compressor station means that the calculation is only based on hydraulic conditions, and the result must be idealized. However, its advantage is that it is convenient for us to understand the basic method and general rules of layout of compressor station.
第4题
输气管线终点站的主要任务是()
A. (A)分离除尘，接收清管器，输气，节流调压;
B. (B)节流调压，输、供气，接收清管器，防腐;
C. (C)对天然气分离除尘，接收清管器，按用户压力、气量要求输供气，对天然气计量;
D. (D)进行天然气分离除尘，接收清管器，按用户压力、气量要求输气
第5题
输气管流动特点Flow characteristics of gas pipeline（）
A、输气管的直径在很长距离上是不变的。管路的曲率半径比直径大很多。The diameter of the gas pipe is constant over long distances. The radius of curvature is much larger than the diameter.
B、垂直于流线方向上的流体参数的变化与沿着流线方向上的变化相比可以忽略不计，因此这种流动可看作一元流动。The change of fluid parameters perpendicular to the streamline direction is negligible compared with the change along the streamline direction.
C、在管路任一截面上所有流体参数都可以看作是均匀的。This means that all fluid parameters can be considered uniform on any section of the pipe.
D、以上都不对
第7题
一条大型输气管，各个时期的输气量不会相同，从投产初期...
一条大型输气管，各个时期的输气量不会相同，从投产初期的不满负荷运行到全部运转时的满负荷工作。同样可以从前面介绍的计算中，找到输气管不同时期的压气站数。这时，必须注意到压气站在不满负荷时，不一定是全部机组投入运行，压气站特性方程中A和B的数值将有所变化。A large gas pipeline will not have the same volume of gas in different periods, from the initial load of operation to the full load of operation. It is also possible to find the number of compressor stations in different periods of the gas pipeline from the previous calculation. At this time, it must be noted that when the compressor station is not under load, not all units may be put into operation, and the values of A and B in the characteristic equation of the compressor station will change.
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