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DG 46-50 single-suction boiler water feed pump 30~132 kw Motor power

Category:
Multistage High Pressure Pumps
Price:
USD 1000 Unit
Specifications
Material:
Cast Iron 、stainless Steel、etc
Color:
Light Blue Or By Required
Port:
Tianjin、 Beijing
Flow:
30~55 M3/h
Head:
92~666 M
Speed:
2949 R/min
Motor Power:
30~132 Kw
NPSH:
2.5~3.2 M
High Light:

high pressure multistage pump

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high pressure multistage centrifugal pumps

Introduction

DG 46-50 single-suction boiler water feed pump 30~132 kw Motor power

 

 

Description

 

  • DG type horizontal single-suction multi-stage segmental vertical centrifugal pump, the chemical and physical properties for conveying water or similar Yu Qingshui liquid, suitable for the medium and low-pressure boiler or high-pressure boiler feed water, can also be applied to plant, the city of high-pressure water supply and drainage.
  • The medium temperature is -20 ℃ ~ 150 ℃, inlet allowed pressure is less than 0.6 Mpa.
  • This series of pumps are adopted country it is recommended to use the hydraulic model of high efficiency and energy saving products.
  • With high efficiency, wide range of performance, safety and smooth running, low noise, long service life, easy installation and maintenance, etc.

 

Features

 

  • DG type pump inlet and outlet are vertical, by tightening bolts will pump water period, the middle, water, pump shell parts such as bearing body connected into a whole.Choose according to pump lift pump series.
  • This series of pump rotor parts is mainly composed of and installed on the shaft of the impeller, shaft sleeve, the balance disc parts, such as the quantity according to the series of the pump impeller.Shaft parts with the flat key and shaft nut fastening and shaft etc.
  • The rotor consists of rolling bearings on both ends or sliding bearing.Bearing according to the different models, are not under axial force, and the axial force by the balancing disc.Allows the rotor in the operation of the pump in the pump shell axial float, cannot adopt the centripetal bearing.
  • Rolling bearings with grease lubrication, sliding bearing with thin oil lubrication, and the self-lubricating oil ring, circulating water cooling.
  • Pump inlet section, middle/water sealing surface adopt molybdenum disulfide grease seal, between rotor part and fixed part is equipped with seal, guide vane, etc when the seal ring and the degree of wear of guide vane set had influence on the performance of the pump work shall be replaced.
  • Shaft seal form has two kinds of mechanical seals and packing seal.
  • Pump using packing seal, the location of the packing ring placed to the right, the tightness of packing must be appropriate, with liquid can drip seeps advisable.
  • Loading pump seal element in a sealed box, box through a certain pressure of water, the water seal, the action of water or water lubrication.
  • In the shaft seal is equipped with replaceable shaft sleeve, the protection of pump shaft.
  • Time high-pressure pump generally adopts sliding bearing, thin oil lubrication structure, DG85-67, DG155-67 type pump can adopt sliding bearing, thin oil lubrication also can use rolling bearing, the structure of the centralized grease lubrication, the rest of the model adopts rolling bearing, dry lubrication structure.
  • Of the major parts material and low-pressure pump generally USES the high quality cast iron, high-pressure pump main parts adopt cast steel or stainless steel.
  • This series of pump through the flexible coupling, driven by a prime mover directly from the direction of the prime mover, the pump is clockwise.

Model Significance


Such as DG 46-50×12


DG -  Sectional centrifugal pump boiler
46 - the design flow rate
50 - Single-stage head
12 - series for level 6

 


Performance

                                                       

 

                                                                DG 46-50×12 Performance Parameter 

 

Level Flow Q Head Speed η shaft power Motor   Impeller Pump Moter
H n (%) N NPSHr Diameter weight weight
(m) (r/min)   (kw) (m) D (kg) (kg)
m³/h L/s         power(kw) Type   (mm)    

 

2     111 2950   16.78 30 Y180M-2   208 262.7 240
    100   19.88  
    92   21.52  
3     166.5   25.19 37 Y200L2-2   281.5 260
    150   29.83  
    138   32.28  
4     222   33.59 45 Y225M-2   300.3 325
    200   39.77  
    184   43.04  
5     277.5   41.98 55 Y250M-2   319.2 395
    250   49.71  
    230   53.8  
6     333   50.38 75 Y280S-2   338 500
30 8.66 300 54 59.65 2.5
    276   64.56  
7     388.5   58.78 90 Y280M-2   356.8 550
46 12.78 350 63 69.6 2.8
    322   75.32  
8     444   67.2 90 Y280M-2   375.7 550
55 15.28 400 64 79.52 3.2
    368   86.08  
9     499.5   75.56 110 Y315S-2   394.5 875
    450   89.48  
    414   96.84  
10     555   83.97 132 Y315M-2   412.3 950
    500   99.42  
    460   107.6  
11     610.5   92.37 132 Y315M-2   432.2 950
    550   109.36  
    506   118.36  
12     666   100.8 132 Y315M-2   451 950
    600   119.28 -160 (Y315L-2)   -1070
    552   129.12        

 

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