This article describes on line proving of natural gas flow meters by using sound speed nozzles.
本文叙述了用音速喷嘴在线标定差压式天然气流量计。
The result of program operation shows the calculating result satisfies the requirements of natural gas flow state and measurement error analysis to the system.
程序运行表明，计算结果满足该系统对天然气流动状态及计量误差分析的要求。
After studied the natural gas flow speed, density and helicity in the spiral and sine flow channel, the effects of natural gas to the bending tubing was obtained.
通过对天然气在螺旋弯曲和正弦弯曲流道内的流动速度、密度和螺旋度进行研究，得到天然气对弯曲油管的作用力。
Based on the theory of the phase transition, gas dynamics, this dissertation set up the mechanical model of high speed natural gas flow with phase transition in Laval nozzle.
依据相变理论、气体动力学理论建立了描述有相变喷管中天然气高速流动的数学模型。
The differential pressure fluctuation has a quite great influence upon the measure precision in measuring natural gas flow rate with the measuring device by use of standard orifice plate.
在采用标准孔板节流装置测量天然气流量时，盖压波动对测量精度影响甚大。
The influence of the gas space on the top of an integral reactor vessel on the flow stability in the start up process of a natural circulation two phase flow system is studied experimentally.
通过实验研究了一体化自然循环反应堆压力壳上部自稳压气空间对于自然循环两相流系统启动过程中流动稳定性的影响。
The relationship was also indicated between the flow of natural gas and the parameters of ignition under the certain air-natural gas ratio.
在空燃比一定的条件下，对天然气的流量与点火参数的关系进行了试验。
During the operation with variable cooling water flow rate, the increase of fired natural gas volume shall be avoided by improving energy control system.
在采用冷却水变流量运行时，应通过改进能量控制系统避免天然气燃烧量的增加。
For natural gas processing system existed, the technics flow and construction was invariable, the capacity of unites and equipments was definite, which have been made certain when system was designed.
但对于已建成的天然气处理系统而言，其工艺流程和结构保持不变，系统中工艺单元和装置生产能力是一定的，这些都在系统装置设计时已经确定。
Therefore, this paper introduces a linearized function in light of the flow conditions of natural gas and obtains an analytic solution through solving nonlinear equations.
对此，本文根据天然气流动情况，引入一线性化函数，通过求解非线性方程得到了解析解。
The simulation is developed by using cross flow mathematical model and solution-diffusion model for natural gas separation process in spiral-wound membrane modul.
利用错流流动模型及膜渗透的溶解-扩散机理，对螺旋卷式膜组件中天然气的分离过程进行了模拟计算。
Ball valve fully open, the flow resistance is very small, almost zero, so the ball valve diameter is widely used in petroleum and natural gas pipelines because the pipeline cleaning easy.
球阀在完全开启时，流阻很小，几乎等于零，因此等径球阀广泛应用于石油天然气管线中，因为容易清扫管线。
When a natural gas network is done off-line numerical simulation, every pipeline needs be distributed initiatory flow as the initiatory value of iterative computation.
在对天然气管网进行离线数值模拟计算时，需要给各管段分配初始流量，并作为迭代计算的初始值。
On the other hand, natural gas pipelines continue to be corrosion with the gas flow in pipelines.
另一方面由于油管内流动天然气的冲蚀作用，油管壁厚变薄强度下降。
The characteristics of natural gas ultrasonic flowmeter and the problems to be in need of solution are described, and the result of practical flow measurement is analyzed.
阐述了天然气超声波流量计的特点和待解决的问题，分析了实流测试的结果。
The wet natural gas in transmission pipeline assumes two phase of gas and liquid, so its flowing always assumes a slow transient flow state.
在实际运行中，湿天然气在输送管道中存在气液两相，因此管道中的流动总是处于慢瞬变流动状态。
The temperature and pressure sensor gathered on-the-spot temperature and pressure signal, and A/D converter converted analog signals into digital signals to revise the on-the-spot flow of natural gas;
温度和压力传感器采集现场温度、压力信号并经A/D转换器转换成数字量用于对现场天然气流量进行温度、压力修正；
The method of measuring is important to the measurement of natural gas flux for an intelligent orifice plate flow totalizer.
对于天然气计量用的智能孔板流量积算仪，流量的计算方法对计量结果有非常重要的意义。
The compression modules will be available in a power range up to 15 MW, with the same pressure and flow ranges as conventional natural gas compression applications.
压缩模块可用功率范围可达15兆瓦，和常规天然气压缩应用的压力和流量范围相同。
Introduced is a new kind of liquid hydrocarbon recovery process by natural gas stripping refrigeration and described are its process flow and characteristic.
介绍一种新型汽提气制冷天然气液烃回收工艺，阐述了工艺流程及特点。
Unsteady flow and concentration fields in the liquid phase of a gas-liquid contacting system were simulated to show the natural convection by utilizing the finite-element CFD method.
并通过吸收传质流体CFD模型，应用有限元方法对气液吸收过程中出现的自然对流发生过程进行了数值计算，得到了液相自然对流发生时的非稳态流场分布和浓度分布信息。
The circulating recovery ground flow can reuse circulation medium, especially for nitrogen and natural gas, the corresponding cost, risk and the extent of environment poll...
可循环回收地面流程能够将循环介质，特别是氮气和天然气重复再利用，能够大大节约成本，减少环境污染，降低风险。
The circulating recovery ground flow can reuse circulation medium, especially for nitrogen and natural gas, the corresponding cost, risk and the extent of environment poll...
可循环回收地面流程能够将循环介质，特别是氮气和天然气重复再利用，能够大大节约成本，减少环境污染，降低风险。
应用推荐