13755314420

 

Designed for handling refined products at the process plants in the oil-refining industry.

Description:

ANDh and ANDMh series pump units consist of a centrifugal pump and an induction motor in the explosion-proof version, which are mounted either on a common base plate (if the nominal power of the motor is less than 400 kW) or on separate base plates. The pump and motor shafts are connected by means of a flexible coupling. The pump units shall be rigidly anchored to the foundation, and piping shall be also rigidly connected to the pumps.

The pumps as components of the pump units are electrically driven horizontal, between-bearings, centreline-supported, single- or multistage segmental or barrel type centrifugal pumps with hydraulic balancing of rotor axial thrust.

Flanged nozzles are oriented: radially to the top (discharge) and tangentially horizontally sideways (suction). Counter flanges have a weld neck.

Upon the Customer’s request, the suction nozzle may be arranged vertically.

In order to enable the pump to withstand hot and cold shocks and thus to allow for free expansion of static components during the pump operation whilst maintaining coupling alignment, the pump feet on the drive side are rigidly dowelled to the base plate pedestal and the other end is pinned so that it should be axially moveable.

The pump rotor is carried either by the oil-bath lubricated antifriction bearings with forced cooling (if the nominal power of the motor is less than 400 kW), or by the oil-bath lubricated plain bearings (in case of the nominal motor power within 400 to 630 kW), or by the pressure lubricated plain bearings with lube oil supplied by a pressure lubrication installation (if the nominal power of the motor is over 630 kW).

Shaft sealing is by mechanical seals in tandem arrangement, which utilizes a pressurized barrier fluid, neutral to handled medium. Handled medium near the shaft seals is cooled by cooling liquid supplied into the thermal barrier chambers.

Sense of rotation of pump shaft is shown with a rotation arrow attached to the pump casing or to the bearing housing on the drive side.

Coverage chart of the NDh and NDMh Series Pumps:

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Performance of the NDh and NDMh Series Pumps:

Pump make

Pump parameters

Capacity, m3/h Head, m Speed of rotation, rpm Power input (r=907 kg/m3), kW Efficiency, % NPSH required, m
NDh  55-70 Y2

55

70

3000

17

61,5

2,5

NDh  80-130 Y2

80

130

44

64,5

4,5

NDh  200-100 Y2

200

100

70

78

4

NDh  200-180 Y2

200

180

151

65

4,6

NDh  300-100 Y2

300

100

109

75

4

NDh  320-170 Y2

320

170

187,5

79

9

NDh  400-110 Y2

400

110

154

78

4,6

NDh  500-100 Y2

500

100

171

79,5

4,6

NDh  500-160 Y2

500

160

279

78

7,2

NDh  1300-125 Y2

1300

125

582

80

9,5

NDMh  25-125 Y2

25

125

18

46,5

2,5

NDMh  60-250 Y2

60

250

71

57,5

4,5

NDMh  60-350 Y2

350

100

57

4,5

NDMh  110-270 Y2

110

270

117

69

4,5

NDMh  110-350 Y2

350

152

69

4,5

NDMh  110-460 Y2

460

200

69

4,5

NDMh  150-180 Y2

150

180

100

73,5

4,5

NDMh  150-220 Y2

220

120

75

6,0

NDMh  150-510 Y2

510

283,5

73,5

4,5

NDMh  200-720 Y2

200

720

530

74

6,0

NDMh  220-600 Y2

220

600

500

72

6,0

NDMh  320-290 Y2

320

290

351

72

4,5

NDMh  360-350 Y2

360

350

434

79

4,5

NDMh  500-145 Y2

500

145

1500

250

79

2,5

NDMh  500-300 Y2

500

300

3000

511

80

4,6

NDMh  600-320 Y2

600

320

688

76

7,8

NDMh  750-170 Y2

750

170

463

75

6,0

NDMh  1000-320 Y2

1000

320

1089

80

4,5