PE Series Multistage Segmental Pumps

Applications: Designed for delivering treated water (feedwater) at the pumping temperature of up to 438К (165^oС) into the fossil-fueled stationary boilers with absolute steam pressure of maximum 13.7 MPa (140 kgf/cm²).

Design: APE series pump units consist of a centrifugal pump and an induction motor, which are mounted on a common fabricated base plate. In case of АПЭ 150-63 and АПЭ 250 models the pump and motor are mounted on separate base plates. The pump and motor shafts are connected by means of a rubber-bushed (pin-and-bushing) flexible coupling enclosed with a coupling guard.

The APE 270-150 and APE 250 pump unit models are equipped with a gear-type coupling and is furnished with a pressure lubrication installation to provide their coupling and bearings with lube oil.

The pump units shall be rigidly anchored to the foundation, and piping shall be also rigidly connected to the pumps.

The pumps are motor-driven horizontal, centreline-supported, between-bearings multistage ring-section centrifugal pumps with single flow impeller arrangement.

The pump casing comprises a suction casing, a delivery casing and a set of stage casings, which are concentrically aligned with respect to each other on rabbeted fits and are bolted together with tie bolts. Diffusers are built in the stage casings and delivery casing.

The suction and delivery casings have flanged suction and discharge pump nozzles respectively, which are oriented vertically to the top.

The rotor axial thrust is automatically balanced with a balance disc. In order to ensure a normal functioning of the balancing device, its chamber is to be communicated with the suction pipeline. A bearing end cover, fitted in the non-drive side bearing housing, has a shaft position indicator for sight control of the wear of balancing device surfaces and for restraining rotor axial displacements towards the delivery side.

The pump rotor is carried by the plain bearings with ring lubrication (with forced lubrication from a pressure lubrication installation for the pump PE 270-150).

The design of pump shaft seal chambers provides both for housing mechanical seals and for packing the stuffing boxes, which are to fed with cooling liquid.

Sense of rotation of shaft in all the pumps is counterclockwise (clockwise in case of PE 270-150), if viewed from the drive side.

DN	mm	100 - 300
Q	m3/h	320
H	m	2150
p	kg/cm2	7, 10
t	oС	+165
n (sync)	rpm	3000

Coverage chart of the PE Series Pumps:

Performance of the PE Series Pumps:

Pump make	Pump parameters
	Capacity, m3/h	Head, m	Speed of rotation, rpm	Мощность, кВт (r=902,4 kg/m3)	Power input (r=907 kg/m3), kW	Efficiency, %	NPSH required, m
PE 65-28-S UKhL4 PE  65-28-Т UKhL4	65	290	2960	70,2	77,8	66	4
PE 65-32-S UKhL4 PE 65-32-Т UKhL4		330	2960	80	88,6
PE 65-40-S UKhL4 PE 65-40-Т UKhL4		440	2960	106,6	118,1
PE 65-53-S UKhL4 PE 65-53-Т UKhL4		580	2975	140,5	155,6
PE 100-32-S UKhL4 PE 100-32-Т UKhL4	100	330	2970	119,3	132,2	68
PE 100-53-S UKhL4 PE 100-53-Т UKhL4		580	2980	206,7	229	69
PE 150-53-S UKhL4 PE 150-53-Т UKhL4	150	580	2970	301,3	333,9	71	5
PE 150-63-S UKhL4 PE 150-63-Т UKhL4		700	2970	363,7	403
PE 250-75 UKhL4 PE 250-75-S UKhL4	250	840	2979	707	783	73	11
PE 250-90 UKhL4 PE 250-90-S UKhL4		1005	2979	846	937
PE 250-105 UKhL4 PE 250-105-S UKhL4		1170	2973	985	1091
PE 250-120 UKhL4 PE 250-120-S UKhL4		1335	2973	1124	1245
PE 250-135 UKhL4 PE 250-135-S UKhL4	250	1500	2973	1262	1399	73	11
PE 250-150 UKhL4 PE 250-150-S UKhL4		1665		1401	1553
PE 250-165 UKhL4 PE 250-165-S UKhL4		1830		1540	1707
PE 250-180 UKhL4 PE 250-180-S UKhL4		1995		1679	1861
PE 270-110-3-S UKhL4 PE 270-110-3-Т UKhL4	270	115		1046	1159
PE 270-125-3-S UKhL4 PE 270-125-3-Т UKhL4		1320		1184	1312	74
PE 270-135-3-S UKhL4 PE 270-135-3-Т UKhL4		1480		1310	1452	75
PE 270-150-3-S UKhL4 PE 270-150-3-Т UKhL4		1650		1445	1601	76
PE 270-150-3М-S UKhL4 PE 270-150-3М-Т UKhL4

 

Handled Media:

- Feed water up to 165 ^oС

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