NDh Series Single Stage Radially Split Barrel-Insert Pumps
NDMh Series Radially Split Multistage Segmental / Barrel-Insert Pumps

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

Design: 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.

The motor pump units shall be controlled by a process monitoring, control, warning/alarm and emergency trip system as required in PB 09-540-03.

DN	mm	75 - 386
Q	m3/h	1200
H	m	875
p	kg/cm2	12
t	oС	+400
n (sync)	rpm	1500, 3000

Coverage chart of the NDh and NDMh Series Pumps:

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

 

Handled Media:

• Refined products up to 400 ^oС at the process plants in the oil-refining industry

(c) 2008. Designed by Tria Studio www.tria.sumy.ua