LB型不可抽式立式長軸濕坑泵

概述

LB型不可抽式立式長軸透平泵適用于電廠、鋼廠、自來水公司、污水處理廠、石油化工、礦山等工礦企業，以及市政給排水工程、農業灌溉、防洪排澇等工程�？梢杂脕磔斔�55℃以下的清水、雨水、鐵皮坑水、污水以及海水等介質，流量范圍30-8400m³/h，揚程范圍10-200m。特殊設計的輸送介質溫度可達90℃。

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.

LB型不可抽式立式長軸濕坑泵產品特點

1、 運行平穩，安全可靠，免抽真空啟動，使用壽命周期長。

2、 泵體積小，基礎占地面積少，基礎以下泵長度可以調整，適應性強。

3、 流道簡單可靠，節省泵房基建投資。

4、 結構合理，裝拆方便，維護檢修容易簡便。

5、 泵效率高，降低運行成本。

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濕坑泵型號說明

 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濕坑泵產品結構說明

簡圖一. LB型不可抽立式長軸濕坑泵結構簡圖(型式:ST) Sectional Arrangement Of Type LB(Type ST)

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

1、 LB型立式長軸泵為立式單級（多級）離心式或斜流式帶導葉體結構。

2、 泵的結構型式有泵吐出口在安裝基礎之上和之下(型式代號分別為S和X)、泵承受軸向力和電機承受軸向力(型式代號分別為T和D)、外接潤滑水和泵自身潤滑等形式。

3、 泵安裝型式有濕坑式安裝或干坑式安裝。

濕坑式安裝：泵下部浸沒在吸水池中。

干坑式安裝：泵采用管道進水，泵吸入喇叭口與進水管道之間采用90°肘形進水彎管聯接。

4、 泵軸承為橡膠導軸承或賽龍導軸承。

5、 泵口徑在1000mm以下時，泵轉子一般為不可抽形式；泵軸向水推力及轉子重量一般由泵本體推力軸承承受，泵和電機之間采用彈性聯接；泵吐出口位于安裝面基礎之上（型式代號為ST的結構形式）。如有要求，也可以由電機承受軸向水推力及轉子重量；或其它結構形式的組合（型式代號為SD、XT、XD）;用戶如有要求， 也可以設計成可抽式結構形式。泵口徑在1000mm以上時，泵轉子一般為可抽形式；泵軸向水推力及轉子重量一般由電機推力軸承承受，泵和電機之間采用剛性聯接；泵吐出口位于安裝面基礎之下（型式代號為XD）。如有要求，也可以由泵承受軸向水推力及轉子重量；或其它結構形式的組合（型式代號為XT、SD、ST）。用戶如有要求， 也可以設計成不可抽式結構形式。

6、 泵本體承受軸向水推力及轉子重量時，泵推力軸承采用稀油潤滑，推力軸承部件帶Pt100測溫元件測軸承溫度或壓力式溫度計測潤滑油溫度。

7、 泵軸向密封采用填料密封。

8、 在泵安裝基礎上可以進行葉輪與葉輪室（轉動部分與靜止部分）之間間隙的調整，操作方便。

9、 從吐出方向往泵看，電機接線盒與泵外接潤滑水接管位于左側。也可根據用戶要求，布置在其它方位。

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濕坑泵產品主要零部件材質Materials Of Major Parts

注：根據用戶具體使用要求，可另選其它適合材質。鑄鐵材質葉輪只適用于閉式葉輪。

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濕坑泵型譜圖

LB型立式長軸濕坑泵外形尺寸圖(基本型式XD)