查询词典 two pipe system

This paper analyze and study the influence of the superimposition in depth based on the previous achievements and combined with the theoretical qualitative analysis and project instances. The main contents as follow:Chapter 1: Indicate the significance and objective of this paper, review the previous achievements of the transient process and superimposition, and then present the study purpose of this paper.Chapter 2: combined with the physic knowledge of the fluctuation and the superimposition, Indicate the physical essences and the influence of the superimposition phenomena that exist in the diversion pipe system, and take one hydraulic turbine owning only one diversion tunnel and two hydraulic turbines sharing one tailrace conduit for instance to study out the numerical calculation superimpose operations.Chapter 3: From the calculation theory of the parameter of the guaranty calculation of regulation of the hydro-turbine, qualitative analyze the influence of the superimposition on them and the superpose time, combined with some project instances, get the numerical value of the influence of the superimposition and the superpose time.Chapter 4: Based on the previous achievements of the calculation and theoretical analysis of the surge-chamber ground swell, analyze the influence of the superimposition on it and the superpose time.

本文在前人研究成果的基础上，结合理论定性分析及工程实例，对波动叠加带来的影响进行深入分析研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水电站过渡过程及波动叠加方面的有关研究成果，在此基础上提出本文的研究内容；第2章，结合物理学中有关振动与波动叠加方面的有关知识，阐述水电站引水发电系统中存在的波动现象的实质及其影响，并以两机一洞和一机一洞具有上游调压室或下游调压室的水电站拟定其数值计算叠加工况；第3章，从机组调保参数的理论出发，定性的分析波动叠加对机组调保参数的不利影响及叠加时间，结合几个工程实例，得到波动叠加带来的影响大小及叠加时间；第4章，在前人对调压室涌浪进行计算和理论分析的基础上，分析波动叠加对调压室涌浪的影响及其叠加时间。

This paper analyzes the effect of gravity head on different forms of low temperature hot water heating system common riser, by using Kirchhoff s law analyzes downfeed and upfeed two-pipe system s hydraulic balance status.

本文分析了重力作用压头对低温热水计量采暖系统共用立管形式的影响，通过运用基尔霍夫定律分析了下分异程式双管系统和下分同程式双管系统的水力平衡状况，得出了下分异程式双管系统更适用于低温热水采暖系统的结论，并确定了立管经济比摩阻的范围和下分异程式双管可以负担的楼层数。

This valve is widely used in building material, glass, mining, power, light industry etc. It is also the important device in pipe system to open or close and adjust medium flow in two ways. It can meet the demand of pipe technology operation by adjusting flow according with the different working conditions.

手动风量调节阀广泛适用于建材、玻璃、矿山、电力、轻工、造纸等行业，在管路上作为双向启闭及调节介质的流量的重要设备，对管路中流量根据工况的不同需要进行调节，以满足管道工艺运行的需要。

With the swift development of the hydroelectric project in our country, a set of large or extraordinary hydropower stations are being designed or constructed, such as the Three Gorges hydropower station, Longtan hydropower station, Xiangjiaba hydropower station, Xiaowan hydropower station, Pengshui hydropower station etc. All these hydropower stations adopt underground workshop, and have long diversion pipe system, and have one or two surge-chambers or adopt tailrace tunnel with sloping ceiling.

随着我国水电事业的迅速发展，一批大型、特大型水电站正在设计或处于待建之中，如三峡水电站、龙滩水电站、溪洛渡水电站、向家坝水电站、小湾水电站、乌江彭水水电站等，这些电站多采用地下厂房，具有较长的引水发电系统，并且设有调压室或采用变顶高尾水洞。

Two kinds of fireextinguishing facilities,including wet pipe system in the winding corridor and preact system in the basement,are installed in order to meet the needs of various use functions and different fire areas of the Library of Shenyang Architecture and Civil Engineering University.

为了满足沈阳建筑工程学院新校区图书馆的不同使用功能和建筑专业划分防火分区的需要，设置了两种自动喷水灭火系统。

This paper analyses the advantages of down feed two pipe horizontal cascade system in all aspects and influencing degree by natural circulation pressure.

分析了下供下回水平双管系统的优点以及自然循环作用压力的影响程度，计算数据证明下供下回水平双管系统的垂直热力失调基本不存在；因为每层供回水采用双管系统，所以也不存在距离热源最远的散热器不热问题。

The air conditioning system is divided into four sub-systems and the two-pipe chilling water system is of primary pump variable water flow type.

空调系统划分为 4个独立的子系统，空调水系统为一次泵变水量系统，双管制。

Conditioned area with two-pipe water system is divided into inner zone and peripheral zone.

系统分内、外区，水系统为两管式。

Through hydraulic calculation, determines and tests mean friction resistance of riser and horizontal branch circuit of new two-pipe heating system, provides reference for its hydraulic design calculation.

本文分析了新双管系统与传统双管系统的不同，提出了确定新双管系统平均比摩阻联值的方法，并通过水力计算，确定并验证了新双管系统中立管与水平支路的平均比摩阻的取值，为新双管系统水力设计计算提供参考。

This paper analyzes the difference between new two-pipe heating system and traditional heating system, puts forword the way of determining mean friction resistance of new two-pipe heating system.

免费论文，内容包括自然循环作用压力水力平衡恒温阀预设值不平衡率双管计量计量供热供热供热系统问题分析

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。