Product Introduction
Besed on IS and ISG vertical pumps, ISGB、IRGB series detachable
piping centrifugal pumps are detachable vertical centrigugal pumps
provided with original structure and leading technology. Embodying
advanced imported technology, years of production practice and
valuable experience of the mass users, they are superior to other
products of the same kind.
This series of products are proven qualified in all indexes
according to the inspection carried out by national pumps testing
center, zhejiang branch. Designed and manufactured strictly to
ISO2825, they fill a void at home, with their all around protecties
matching the leading level of the similar products in the
international.
This series of products are integrally designed with breakthrough
ideas. The pump shaft is given independent bearing, which is a
solution to the deficiency of the former ISG and ISW pumps, whose
extended shaft is supported by motor to eliminate the axial and
pump body are designed and manufactured with the most up-to-date
hydraulic model to eliminate the axial and radial forces of
vertical pump, making both the bearings at pump shaft and motor
only bearing slight axial and radial forces.
Y and Y2 standard general motors are used in this series. The whole
pump is provide with a detachable structure, which is away from the
problem of difficulty in replacing the wearing parts of
high-powered pumps, such as bearing, mechanical seal. Impeller and
etc.
Compared with other products of its kind at home, this series of
pumps are given irreplaceable advantages, like smooth running, long
service life, easily configured, self-circulation cleaning system,
ease of maintenance and etc. making them an optimal choice to
replace the conventional centrifugal pumps of ISG, IS and S models.
Definition
For example: ISGB150-50(I)A
ISGB-standard detachable centrifugal pump
IRGB- standard detachable hot water centrifugal pump
150-Diameters of suction and discharge nozzles of pump (mm)
50-pump rated head (m)
(I) pump flow classification
A- Impeller processed with primary cutting
Main purpose
Applied as the transportation of non-corrosive cold and hot water
in these fields of air-cordition, heat circulation, non-polluted
water, water treatment, cooling & freezing systems, liquid
cycle, water supply, increasing pressure, irrigation and so on .
Working conditions
Rotating speed: 2960 r/min, 1480 r/min, 980 r/min
Medium: clean water or liquid with similar physical chemical
features as clean water.
Medium temperature: -10℃-80℃ (ordinary temperature pumps), ≤120℃
(hot water pumps)
Ambient temperature: up to 40℃
Range of capacity: 1.8 1900 m3/h
Range of head135m
Maximum working pressure: suction pressure + head of pump1.6 Mpa
Maximun suction height
When use, the users should consider various factors that can affect
the use, the max suction height should be less than the following
calculated value (the liquid will flow backward when the calculated
value is negative).
H= Pb x 10.2 (NPSH)r - ∑h - Hv Hs
Pb: local almosphere pressure bar
(NPSH)r: Net positive suction head m
∑h: Loss of suction strengrh m
Hv: The pressure of saturation steam of liquid m
Hs: safety surplus m (minimum:0.5m)
Materials
Pump body: Cover and Impeller: cast iron, cast steel and stainless
steel
Shaft: 45 steel/stainless steel 3Crl3
Mechanical seal motive immobile ring:
Tangsten carbide, silicon carbide, harden alloy and so on.
Structure description
With compact structure, be applicable especially for modern
construction.
Pump casing: it is a kind of pipes-joined spirai pump casing, adpot
the best hydraulic model to design. The suction and discharge
nozzle have the diameter or same dimension, and the centers of
circle are in the same line.
Impeller: it is a kind of enclosed cast iron impeller, and its best
hydraulic model guarantess the efficiency and reliability of pump.
Mechanical seal: it is free of mainfenance and free to rotation if
used in the water below 80℃ou 120℃. The special design for dynamic
ring can guarantee the reliability of seal.
Motor
Y、Y2 series: total closed self fan-cooled squirrel cage, a phase
asynchtonous motor.
Voltage: 380V
Frequency: 50Hz
Protection calss: IP44/IP54
Installlation class: B5/V1
Installation modes: B35
Notice: special motor can be ordered upon request.
Assembly advantgaes
Pump shaft and motors shaft
