水泵

In accordance with the characteristics of main drainage pump for coal mine and the present development of control and measurement technology, the paper introduces a kind of modularized computer monitoring system for main drainage pump underground coal mine.

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

Basement, equipment room, garage drainage wash the ground, where two and two or more drainage pump equipment when not pumping.

地下室、设备机房、车库冲洗地面的排水，如有两台及两台以上排水泵时可不设备用泵。

Drainage pump assembly is the heart of submarine drainage and it's one of important systems that ensure submarine's life. It is usually used to drain the bilgewater.

疏水泵组是潜艇疏水系统的心脏，是保障潜艇生命力的重要系统之一，主要用于疏排舱底积水。

Thus improving the electric auto-control system for underground main drainage pump.

以此对井下主排水泵电气自动控制系统进行改造。

Basement, equipment room, garage, wash the soil drainage, if two and two or more drainage pump device pumps may from time to time.

地下室、设备机房、车库冲洗地面的排水，如有两台及两台以上排水泵时可不设备用泵。

The flow of drainage pump drainage design life should be selected second flow; when there is a displacement of regulation, may be the greatest hour of life drainage flow selected.

排水泵的流量应按生活排水设计秒流量选定；当有排水量调节时，可按生活排水最大小时流量选定。

This design basis of the provided by the bureau surveying place normal and the largest yield,by "Coal Mine Safety Regulations" and the design specification,atter a scientific calculation and analysis,carry on the choice in view of the drainage pump and the discharge pipe to calculate and to verify.

根据局地测处提供的正常和最大涌水量，按《煤矿安全规程》和设计规范的要求，经过科学的计算和分析，针对排水泵和排水管进行了选择计算并校验。

Authors I have observed two projects have been completed, the interior pipe leaks water main pipe at the interface capillary action of water leakage, as well as contacts at one end and Atmospheric Test drainage valves and pump check valve leakage of water exports.

作者本人曾观察过两个已竣工的工程，室内管道的泄漏水主要在管道的接口处毛细作用渗漏水，以及一端与大气接触的试验排水阀门和水泵出口止回阀的泄漏水量。

Troubleshooting: plug removal and replacement of fill, dredge water pipe trench, the correct installation of seal ring; fastener or replacement of the impeller; reduce pump installation, or when the water level rose after the boot.

排除方法：清除堵塞物，更换填料、疏通引水管沟槽，正确安装水封环；紧固或更换叶轮；降低水泵安装位置，或待水位上升后再开机。

Series is a kind of mechani-cal seal component with centripetal. inbuilt, single face. multi-spring and non-equil-ibrium structrure and conforms to ISO 3069 and JB1472-75. It applies to all kinds of centri-fugal pump,chemical pump,inline pump,pipe pressure pump,dredge pump and multi-stage feed pump.

本型号机械密封件是一种内流内装，单端面，多弹簧非平衡型结构，符合ISO-3069，JB1472-75标准，应用于各种离心泵，化工泵，管道泵及管道增压泵，排污泵，多级给水泵。

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。