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概述

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Description

The said series pumps are used to transfer clear water,rain water,water in iron sheet pits,sewage and seawater,servicing in power plants,iron and steel works,water supply companies,sewage treatment plants,petroleum and chemical industries,mines as well as municipal water supply and drainage projects,farmlands irriagation,flood protection and drain waterlogged farmlands,etc..The temperature of pumped media is below 55℃ and reaches to 90℃ for special design. The flow rate ranges from 30 to 8400m3/h and the head—from 10 to 200m.

 

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Features

1. Operation smooth,safe and reliable,starting without exhausting vacumn,service life long.

2. The volumn of the pump small,less occupied land area, the length under foundation adjustable,applicability strong.

3. Flowing channel simple and reliable,saving the investment for construction of the pump house.

4. Structure reasonable,convenient for mounting and dismantling,,easy to maintain and inspect.

5. Efficiency high, operating cost reduced.

 

LB型不可抽式立式長軸透平泵型號說明

500LB—55.3Ⅰ(×2、3)

500——泵吐出口徑500mm

L———立式長軸透平泵

B———轉子不可抽芯

55.3———泵的設計揚程

Ⅰ———泵設計順序（第一次設計無標示）

×2———表示泵的級數爲2級

 

 500LB-55.3Ⅰ(×2、3)

 

 500—Outlet of the pump:500mm

 L---Vertical mixed flow pump

 B---Non pull-out rotor

55.3---Design head

Ⅰ---Pump design class(no mark when first time design)

 ×2-- Stage number

  

LB型轉子不可抽式立式長軸透平泵産品结构说明

簡圖一. LB型不可抽立式長軸透平泵結構簡圖(型式:ST) Sectional Arrangement Of Type LB(Type ST)

簡圖二.LB型立式長軸泵透平泵2級結構簡圖(型式:ST)Sectional Arrangement Of Type LB With Two Stages(Type ST)

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Structure feature:

1.   Series LB pumps are of vertical single stage and/or multistage centrifugal or     mixed flow with diffuser types.

2.   The following structure types are available for the pump:the discharge opening above and/or under the mounting foundation(Type Code named S and X respectively);the axial thrust force born by the pump and/or by the motor(Type Code named T and D);lubricating water from outside and/or from the pump itself.

3.   The intake sump is of wet pit and/or dry pit types.

Wet pit type:lower part of the pump inundated in the intake sump.

Dry pit type:the water enters into the pump,the suction bellmouth is connected with the inlet  pipe of the pump by means of elbow bend pipe of 90.

4.   Rubber guide bearings and /or the Thordon guide bearings are available for  bearings of the pump.

5.   Generally when the nozzle diameter of the pump is under 1000mm , non pull-out type is adopted for the rotor and the discharge opening is above the mounting foundation(Type Code named ST). In this case the axial thrust force and the weight of the rotor are usually born by thrust bearings of the pump itself and  flexible connection is adopted between the pump and the motor.The thrust force and the weight of the rotor can also be born by the motor if required,or other structure types such as SD,XT,XD are available .Rotor pull-out type can also be adopted if required by clients.

Generally when the discharge diameter of the pump is above 1000mm, pull-out type is adopted for the rotor and the discharge opening is under the mounting foundation(Type Code named XD).In this case the axial thrust force and the weight of the rotor are usually born by thrust bearings of the motor and rigid connection is adopted between the pump

and the motor. The axial thrust force and the weight of the rotor can also be born by

the pump if required,or other structure types such as XT,SD,ST are available .Rotor non pull-out type can also be adopted if required by clients.  

6.   When the axial thrust force and the weight of the rotor are born by pump itself,the thrust bearing of the pump is lubricated with dilute oil and is equipped with a temperature detector Pt100 to detect bearing temperature and a pressure type thermometer to detect the temperature of lubricating oil.

7.   The antielectrochemical corrosion appliance is adopted for the part of the pump contacting the liquid to ensure the service life of the pump when seawater is pumped.

8.   The packing seal is adopted for the axial seal of the pump.

9.   The clearance between the impeller and the impeller chamber,i.e.the rotating component and the static component,can be easily adjusted on the pump mounting foundation.

LB型不可抽式立式長軸透平泵産品主要零部件材質Materials Of Major Parts

介質 Media 零件 Parts	清水 Clear water	海水 Seawater	汙水（含磨料） Sewage（incl.of abrasiv powder）
吐出彎管 Discharge elbow 中間接管（外、內） Intermediate column  (internal & external)	Q235-A	HT200Ni2Cr 0Cr18Ni9 ZG0Cr18Ni12Mo2	Q235-A
導葉、吸入喇叭口 Guide vane, Suction bellmouth	HT200	HT200Ni2Cr ZG0Cr18Ni9 ZG0Cr18Ni12Mo2	HT200、QT500-7 ZG1Cr13Ni1
葉輪 Impeller	ZG1Cr13Ni1 HT200	ZG0Cr18Ni9 ZG0Cr18Ni12Mo2	QT500-7 ZG1Cr13Ni1
葉輪室、密封环 Shroud,wearing ring	HT200 ZG2Cr13	ZG0Cr18Ni9 ZG0Cr18Ni12Mo2	ZG1Cr13Ni1 QT500-7
主軸 Main shaft	45、2Cr13	2Cr13、0Cr18Ni9 0Cr18Ni12Mo2	45、2Cr13 1Cr18Ni9
軸套 Shaft sleeve	45,2Cr13	2Cr13、0Cr18Ni9 ZG0Cr18Ni12Mo2	2Cr13、1Cr18Ni9
導軸承 Guide bearing	HT200+耐磨橡膠 HT200+abrasive rubber HT200+賽龍 HT200+Thordon bearing	HT200+耐磨橡膠 HT200+abrasive rubber HT200+賽龍 HT200+Thordon bearing	HT200+耐磨橡膠 HT200+abrasive rubber HT200+賽龍 HT200+Thordon bearing

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Remarks:Other materials are  available at the request of clients.Cast iron is suitable only for closed type impeller.

LB型不可抽式立式長軸透平泵型谱图

LB型立式長軸透平泵外形尺寸圖(基本型式XD)