水泵

Enhancing pump efficiency Pump efficiency refers to the utilization degree of shaft power of prime mover by fluid.

水泵的效率随水泵工作状态点的不同从0至最大效率间变化。

The starting characteristic of pumping station of large size presents an important problem for the design and selection of motive motor.

大型水泵的启动特性在进行原动机的设计和选择中具有重要的意义，而水泵的启动性能在很大程度上决定于整个装置情况。

It is also import water pumpsvano Chinese agent, but also maintained and CALPEDA, SIXTEAM, DAB, WILLDEN, NOCCHI, sandPIPER and many other well-known brands imported pumps close and cooperative relations.

同时也是VANO瓦诺进口水泵中国总代理，还保持着与CALPEDA科沛达，SIXTEAM， DAB，WILLDEN，NOCCHI，sandPIPER等众多知名品牌进口水泵的密切合作关系。

And the explanation of water resistance mainly lie in the cooling water tube blockage, the opening degree deficiency of circulation pump outlet or condenser water inlet valve and the devastation of circulation pump siphonage, etc.

而水阻增加的原因主要是由于冷却水管堵塞，循环水泵出口或凝汽器进水阀门开度不足，以及循环水泵虹吸遭到破坏等原因造成的。

Main engine cooling water system include thermoregulator, fresh water cooler, lub oil cooler, fresh water pump, sea water pump, fresh water tank(also used as fresh water expansion tank).

主机冷却水系统由调温器、淡水冷却器、滑油冷却器、淡水泵、海水泵、淡水箱组成。

Supplies the engine pure part: The piston unit, the connecting rod, the crank module, the piston curl, the connecting rod tile, the host axle bush, stop push around the piece, the crank the oil seal, the cylinder bed, the oil sump filling piece, the gear room filling piece, the water pump filling piece, to enter the exhaust gate, the valve-seat ring, the air valve guide, the tire valve oil seal, the fuel pump unit, the plunger matching part, the bean matching part, the turbosupercharger, the cylinder cover unit, the crank case body, filters, Chai Lv, the generator, the generator, the water pump, the water pipe spatially and so on.

供应发动机纯正部件：活塞总成、连杆、曲轴组件、活塞环、连杆瓦、主轴瓦、止推片、曲轴前后油封、缸床、油底壳垫片、齿轮室垫片、水泵垫片、进排气门、气门座圈、气门导管、气门油封、燃油泵总成、柱塞偶件、喷油嘴偶件、涡轮增压器，气缸盖总成，曲轴箱体，空滤、柴滤、发电机、起动机、水泵、水管等。

Usually installed in the pump exit, to prevent water hammer damage to the pump.

一般装在水泵出口，防止水锤对水泵造成损坏。

I need to know the department can pump water vacuum created there is a limit, the absolute vacuum suction when the water-way is about 10 meters high, and water pumps can not establish an absolute vacuum.

要知道水泵吸水口处能建立的真空度是有限度的，绝对真空时的吸程约为10米水柱高，而水泵不可能建立绝对的真空。

Based on the integral hydraulic model test of SHANGHAI CHANGQIAO waterwork s water-transport pumping station,some research on the hydraulic characteristics of the pressurized forbay has been done in the paper.

本文基于上海长桥自来水厂改造工程送水泵站整体水力模型试验，对有压前池的水力特性进行了研究，研究的主要内容如下： 1、无导流措施的有压前池在不同供水组合及不同机组开机组合条件下的水力特性，并分析了流态较差的原因； 2、加设导流墩后有压前池的水力特性，以及加设导流墩流态改善的原因； 3、有压前池进气临界条件的试验研究； 4、水泵进气以后水泵性能的讨论。

The effective means for increasing the efficiency of power plant is to connect the extraction feedwater system with drainage pump. But the running conditions of drainage pump is bad, because the working substance in drainage pump is generally low pressure heater drainage which is of features such as high back pressure and suction temperature.

采用疏水泵连接的给水回热系统是提高电厂效率的有效措施，但由于低压加热器疏水具有吸入压力和吸入温度比较高的特点，从而造成疏水泵的工作条件较差。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。