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天然气密度
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  “天然气密度”译为未确定词的双语例句
     While this model is used, the gas density is calculated first and then its viscosity. In the large ranges of temperature(37.8~171℃)and pressure(0.69~55MPa), using this model to make an examinational calculation, the value calculated is well coresponded with that measured in practice.
     使用本模型时,先求解天然气密度,再计算天然气粘度,在广泛的温度(37.8~171℃)、压力(0.69~55MPa)范围内,用本模型进行考核计算; 模型计算值与实测值可很好地相符。
短句来源
     Some parameters, such as gas density, flow expansion coefficient, flow coefficient, etc. , shall be corrected so as to keep the flowmeter operate under normal conditions. In addition, automatic, continuous integration or a dedicated computer processing shall be adopted to maintain the measurement precision with minimum error.
     通过对孔板节流装置测量原理、安装要求、仪表的选择以及脉动流等诸多因素的分析,指出影响孔板流量计测量精度的根本因素是节流装置的几何形状和流动状态是否偏离设计标准,应对天然气密度、流束膨胀系数、流量系数等参数进行修正,使流量计在正确的工况下运行,并采用自动连续补偿积算或采用专用计算机进行处理,才能减少计量误差,确保计量精度。
短句来源
     To explore a calculating method for natural mix gas density, according to the national standards and engineering examples, this paper presents that the major factor affecting the density is the diffences in the composition under reference condition, giving the relative density and its calculating method, and providing man -machine interface realzed by VB program.
     为了探讨天然气混合气体密度的计算方法,依据国家标准和具体工程实例,提出了在参比条件下影响天然气密度的主要因素是天然气组分的不同,给出了天然气相对密度及其计算方法,同时给出了用VB程序实现的人机界面.
短句来源
     Compared with traditional gas storage and transportation technology, the NGH system has higher energy density and it’s more safe and more reliable. So, it can be wide used in such aspects as the storage and transportation of natural gas, the exploitation of CBM and the disposal of mine methane and so on.
     与传统储运技术相比,应用 NGH 技术储运天然气密度高、费用低而且安全可靠,在天然气储运、煤层气开采和矿井瓦斯处理等方面具有很高的应用价值。
短句来源
  相似匹配句对
     GAS EXPLORATION BY NEUTRON AND DENSITY LOGGING
     利用中子与密度测井勘探天然气
短句来源
     On Natural Gas's Storage
     天然气的储存
短句来源
     DENSITY OF THE EARTH
     地球的密度
短句来源
     A METHOD OF CALCULATING ACCURATELY NATURAL GAS HYDRATE DENSITY
     一种精确计算天然气水合物密度的方法
短句来源
     Storage of Natural Gas
     天然气的储存
短句来源
查询“天然气密度”译词为用户自定义的双语例句

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  density of natural gas
Ways are indicated of increasing the accuracy in determining the heat of combustion and relative density of natural gas.
      
This simple method is still used in the hydrocarbon processing industries for rapid approximations of the density of natural gas.
      
The volumetric energy density of hydrogen gas is 36% of the volumetric energy density of natural gas at the same pressure.
      


A mathematical model for calculating the viscosity of high pressure gas is presented in this article.While this model is used, the gas density is calculated first and then its viscosity. In the large ranges of temperature(37.8~171℃)and pressure(0.69~55MPa), using this model to make an examinational calculation, the value calculated is well coresponded with that measured in practice.

本文提出一种用于计算高压天然气粘度的数学模型。使用本模型时,先求解天然气密度,再计算天然气粘度,在广泛的温度(37.8~171℃)、压力(0.69~55MPa)范围内,用本模型进行考核计算;模型计算值与实测值可很好地相符。

The conventional oriffice flowmeters, though accurate enough to meet such standards as GB2624-81 and SYL04-83, practically fail to reach their precision due to unqualified design, fabrication, installation and application of the restriction devices. Based on the analysis on such factors as working principles and installation requirements for oriffice restriction device, instrument selection, pulsation flow, etc. , the writer points out that the essential factor debasing the precision of oriffice flowmeters is...

The conventional oriffice flowmeters, though accurate enough to meet such standards as GB2624-81 and SYL04-83, practically fail to reach their precision due to unqualified design, fabrication, installation and application of the restriction devices. Based on the analysis on such factors as working principles and installation requirements for oriffice restriction device, instrument selection, pulsation flow, etc. , the writer points out that the essential factor debasing the precision of oriffice flowmeters is the deviation from design of the geometric structure of restriction device and of the flow state. Some parameters, such as gas density, flow expansion coefficient, flow coefficient, etc. , shall be corrected so as to keep the flowmeter operate under normal conditions. In addition, automatic, continuous integration or a dedicated computer processing shall be adopted to maintain the measurement precision with minimum error.

通常孔板流量计的测量精度能够满足GB 2624—81标准和SYL 04—83标准的要求,但在实际使用中,由于节流装置的设计、制造、安装和使用不符合标准要求等原因,影响了流量的测量精度。通过对孔板节流装置测量原理、安装要求、仪表的选择以及脉动流等诸多因素的分析,指出影响孔板流量计测量精度的根本因素是节流装置的几何形状和流动状态是否偏离设计标准,应对天然气密度、流束膨胀系数、流量系数等参数进行修正,使流量计在正确的工况下运行,并采用自动连续补偿积算或采用专用计算机进行处理,才能减少计量误差,确保计量精度。

To counter problems present in sampling link in natural gas quality analysis from gaspipeline in our countty,the article comprehensively describes developing process of natural gascontinuous sampler for gas pipeline,combining with foriegn development trend. This unit satisfactorily solvesdeviation problem of density value of natural gas,meeting the requirement for full analysis of pipelining gas. At the same time,application of this unit will increase accuracy in natural gas metering.

文章针对国内管输天然气气质分析工作中取样环节所存在的问题,结合国外技术发展趋势,全面地介绍了输气管道天然气连续取样器的研制过程。实践证明,该装置较好地解决了天然气密度值偏差问题,满足管输天然气全分析的要求,同时,该装置的推广应用将会提高天然气的计量准确度。

 
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