水泵

Through the retrofit for multi-frequency regulation, shaft seal ing water system,rotator material and shaft cover orientation mode of 150 NW-78×2 low pressureheater drain pump,pump corrosion at low-load operation,bad packing seal,bearing vibration,bearing burned have been solved.

通过对150 NW 78×2型低压加热器疏水泵进行变频调节改造，对轴端密封水系统、转子部件材质和轴套锁母定位形式进行了改进，消除了给水溶氧超标、轴承振动超标和轴承烧毁等缺陷，提高了泵组健康运行水平。

The mouth of the drainage station Shincheon 6 Units with a total of 4.2m diameter of the tubular pumps, lift 2.6m, single pump flow of 40 m3 / s, the drainage area of 30 mu benefit.

新川河口排水站共装有6台直径为4.2m的贯流式水泵，扬程2.6m，单台泵流量40 m3/s，排水受益面积30万亩。

The main works of this paper are as follows.First, according to the three-step method, 1-D unsteady flow model in river network is introduced. A new topological structure is presented to describe and store the topology information and data in river network ,which realises the connection between GIS and the numerical program of hydraulic calculating and turns the program into a universal one .A new formula of internal boundary conditions with double-recursion algorithm is deduced, and the relationship of recursive coefficient between imaginary channel length and non-imaginary channel length is presented ,which makes sure that the model can comprise the numerical simulation of the internal boundaries such as side pipe outflow ,barrage, slice gate and drainage pump station.

主要工作如下：(1)根据三级解法建立了一维河网非恒定流模型，并提出了一种新的数据结构来描述和储存河网拓扑信息，方便了GIS平台和数值计算程序的衔接，实现了三级解法程序的通用性；从河段方程组出发，根据虚设河段法推导出了内边界条件的双追赶法公式，指明了虚设河段的追赶系数和非虚设河段追赶系数的关系，从而使模型可以模拟集中旁侧入流、堰、闸、水泵等内边界对行洪过程的影响。

A single pump drainage may produce flow backward when the check valve should be set up.

单台水泵排水有可能产生倒灌时，应设止回阀。

Drainage pump should be able to automatically start and stop and start and stop at the scene manually.

排水泵应能自动启停和现场手动启停。

In accordance with the characteristics of coal mining main drainage pump and present state of control and measurement technology,this paper introduces a kind of modularized control and measurement system for coal mining main drainage pump .

针对煤矿主排水泵的特点和当前测控技术的发展，介绍了一种模块化的煤矿井下主排水系统计算机监控系统。

Drainage pump should be able to automatic start and stop and on-site to manually start and stop.

排水泵应能自动启停和现场手动启停。

In the mine drainage system many drainage pump s must work correspondly.

在煤矿井下的排水系统中，需要多台排水泵协调地工作。

Elevator set fire pond within the drainage pump flow is not less than 10L / s.

消防电梯集水池内排水泵流量不小于10L/s。

Therefore, the research on a new type of drainage pump assembly with less vibration and lower noise has important military significance for improving the concealment and security of native submarine, and also its'working environment.

因此开展振动小、噪声低的新型疏水泵组的研究，对改善我海军潜艇的工作环境，提高潜艇的隐蔽性、安全性等都有重要的军事意义。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。