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水力设计计算
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  hydraulic design calculation
     Analyzes the difference between new two-pipe heating system and traditional one. puts forword the wayof determining mean friction resistance of the new two-pipe heating system. Through hydraulic calculation,determines and tests mean friction resistance of riser and horizontal branch circuit of the new two-pipeheating 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取值的方法,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。
短句来源
     This paper analyzes the difference between new two-pipe heating system and traditional heating system, puts forward the way of determining mean friction resistance of new two-pipe heating system. 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取值的方法,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。
  “水力设计计算”译为未确定词的双语例句
     Hydraulic Calculation on Oceanic Outfall Diffuser Non-uniform Emission
     污水扩散器非均匀排放水力设计计算
短句来源
     On the base of the designing rules of pipe- net of Mirco-Irrigation project~ thehydraulic calculating program, which is associated with the outcome of the hydraulicdesign up to data and can be fit for some kinds of Mirco-Irrigation system, is made byusing advanced math module of hydraulic calculation and the traditional method ofhydraulic design.
     根据微灌工程管网水力设计规程,结合最新的管网水力设计研究成果,运用先进的管网水力设计数学模型和传统设计方法编制了适合不同微灌系统的管网水力设计计算程序。
短句来源
     This design is based on the model of Japan MRX and the Russia reactor of ABV-6M, both of which are advanced in the world in design of integral nuclear reactor . This thesis has carried through the thermal hydraulic design , structure design of helical coil type SG and once-through tube SG separately with the same inlet parameters .
     本设计分别依据目前在一体化堆型设计上占据着世界领先位置的日本的MRX概念堆和俄罗斯的ABV-6M堆型为蓝本,在相同系统参数条件下对盘管型直流蒸汽发生器和直管型直流蒸汽发生器进行了结构设计计算、热工水力设计计算和强度校核。
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     This thesis introduces the advanced structures of this kind of pumps, hydraulic calculation, and technical methods to the key problems of enhancing performances, improving characteristic curves and keeping in running stably and reliably in the process of research.
     文中介绍了泵的先进结构、水力设计计算以及研制过程中为提高泵的性能指标、改善泵特性曲线形状、解决运行平稳可靠性等关键问题而采取的技术措施。
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     It provides a theoretical principle and a practical method for the hydraulic design and calculation in slim hole drilling.
     给出了算例,为小井眼钻井工程的水力设计计算提供了理论依据和实用方法。
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     On the Reliability of Hydraulic Calculation of Storm Sewer
     雨水管道水力设计的可靠性计算
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     Presents design of the heating system and hydraulic calculating of the building.
     介绍了供暖系统设计水力计算 ;
短句来源
     Design and Calculation of Cyclones
     旋风分离器的设计计算
短句来源
     The Hydraulic Calculation of Piping Diagram
     管道系统的水力计算
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     Design and Calculation of Flare
     火炬设计计算
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With regard to technical or economical reasons, one of the commonly adopted spillway designs is a connection of spillway with surface re- gime to the downstream river bed by setting a step (straight drop) at the spillway toe without a stilling basin. So far as the flow patterns of connection are concerned, for a given structure, in accordance with the tailwater depth flow patterns of different hydraulic behaviors may appear behind the step. Up to the present, several formulas have been proposed to deter- mine...

With regard to technical or economical reasons, one of the commonly adopted spillway designs is a connection of spillway with surface re- gime to the downstream river bed by setting a step (straight drop) at the spillway toe without a stilling basin. So far as the flow patterns of connection are concerned, for a given structure, in accordance with the tailwater depth flow patterns of different hydraulic behaviors may appear behind the step. Up to the present, several formulas have been proposed to deter- mine the critical state of some flow patterns. However, as the matter stands, the theoretical formulas are either inconvenient in computation or without sufficient accuracy and not used any longer, as for empiri- cal formulas, it may be seen that they almost always have their own limitations. Thus in practical applications the designers are confronted with trouble and hesitation in choosing adequate formulas to work up a correct and reasonable design. With the aim of finding several better formulas, in this paper exi- sting investigations and formulas were reviewed, further analysis and comparisons were made and finally four empirical formulas(〈31〉~〈34〉) respectively for determining the first, second and third critical state and the minimum drop height required for surface regime were obtain- ed synthetically. In these formulas the consistant parts of existing investigations are preserved and a few parts of discrepancy are rejected. The formulas are comparatively simple in form, convenient for appli- cation and with parameters having relatively wide and available extent. It is believed that the formulas obtained in this paper are adequa- te for hydraulic designs of spillways with surface regime to the down- stream river bed by adopting a step at spillway toe with an upward angle of exit lip less than 10°. Finally, an example showing in detail the calculation procedures of the author's formulas is presented.

在水工泄水建筑物中,连续式面流鼻坎是目前采用较多的一种消能和水流衔接型式。关于面流鼻坎及其衔接流态的水力设计计算问题,前人的研究实践已经取得一定的成果和经验。但是一些理论的或半经验半理论的公式,由于在推导过程中作了这样那样的假定,计算较繁而且结果不够准确,现今已很少采用。经验公式比较简便,但又多受各自根据资料和条件的限制有其局限性。所以在具体应用时,往往感到不易掌握而无所适从。本文收集了一些前人的研究成果,对其计算公式和资料进行分析比较,最后综合出四个经验公式。这些公式既吸取了现有多数公式和资料中比较一致和接近的地方,又拚弃了少数公式的较为离散之处,式中各项参数具有较大的适用范围,公式的形式简单,计算方便,配合作图能清晰地反映鼻坎衔接流态的变化特征,可供在设计常见的小挑角(鼻坎挑角小于10°左右)连续式鼻坎时,选择鼻坎的布置和计算面流、淹没面流和回复底流三种临界流态以及估算最小鼻坎高度时参考应用。文末列举了利用本文公式进行水力计算的算例。

Jet drilling can increase the drilling rate,while overpressure jet drilling couldincrease of 2- 3 times. It was not used in practice because of the overpressure applying on theequipment. The dual string drilling system was developed by the end of the 1980s,carringcuttings with high flow rate under normal pressure and cracking rocks with low flow rate un-der high pressure. In this system, the surface booster was used, but its reliability was lowwhile the cost was high. At present,it is down hole booster that...

Jet drilling can increase the drilling rate,while overpressure jet drilling couldincrease of 2- 3 times. It was not used in practice because of the overpressure applying on theequipment. The dual string drilling system was developed by the end of the 1980s,carringcuttings with high flow rate under normal pressure and cracking rocks with low flow rate un-der high pressure. In this system, the surface booster was used, but its reliability was lowwhile the cost was high. At present,it is down hole booster that has caused much attention tothe drilling field,it solved the problems of the dual string drilling system. It was stated themeanings of the study on downhole booster to the improving of drilling rate, analyzed thepower and requirment of the static pressure down hole booster. The author recommended thehydraulic designing and calculation method of two kinds of typical downhole booster.

喷射钻井可以提高钻速,超高压射流钻井又可提高钻速2~3倍,但由于设备要承受超高压,所以未获实际应用。80年代末研制成双管钻井系统,用常压大排量携岩,高压小排量破岩,用的是地面增压器,其可靠性差、成本高。目前引起钻井界普遍重视的是井下增压.它克服了双管钻井系统的缺点。本文阐述了井下增压器研究对提高钻井速度的意义,分析了静压式井下增压器的动力来源和要求,并提出了两种典型井下增压器水力设计的计算方法。

The research and development of hydraulic design methods for hydraulic turbine have been reviewed and assessed in detail in this paper. A new modern designmethod has suggested for the design of hydraulic turbine components.

本文对水轮机过流部件的水力设计研究现状和工业应用作了全面的介绍,就水轮机蜗壳、导叶双列叶栅和转轮的各种水力设计计算方法进行了评述,并对现代水轮机过流部件水力设计的发展方向提出了新的建议.

 
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