Vacuum-Compact Systems SIHImodular PL 26 M, PL 51 M0 pages

Vacuum-Compact Systems
SIHImodular
PL 26 M, PL 51 M
ANLAGENTECHNIK PL 1
133.94400.51.01 E 06/2000
SAT
Pressure range: 33 bis 1013 mbar
Suction capacity : 3 bis 58 m³/h
DESIGN AND CONSTRUCTION
The SIHImodular systems consist of a various components which are
assembled together to form a compact unit. Each unit can be varied
in accordance with the respective application.
The LEM liquid ring vacuum pump utilised in these systems is of a
single stage design and of a simple and robust construction with the
following features:
· Non polluting due to near isothermal compression
· Oil free, no lubrication in the working chamber
· Capable of handling nearly all gases and vapours
· Small quantities of entrained liquid can be handled
· Easy to maintain and reliable operation
· Low noise and virtually free from vibration
· Anti cavitation protection as standard
The SIHImodular systems are offered as a service liquid saving
arrangement and can be supplied with or without a heat exchanger.
APPLICATION
As with the other SIHI liquid ring vacuum pumps this type is also
capable of handling dry and saturated forms of gases. Small
quantities of entrained liquid in the suction gas stream can also be
dealt with. The SIHImodular is designed for vacuum applications of
between 33-900 mbar, however, this range can be extended when
used in conjunction with the respective gas operated ejector. (See
standard catalogue for details).
PL 91 M.A.M 55 0.0A
NOTE
During its operation, the liquid ring vacuum pump must be
continuously supplied with service liquid, normally water, in order to
eliminate the heat resulting from the gas compression, and to prevent
the pump from dry running operation. The service liquid is separated
from the process gas in a separator. Dependent on the chosen
arrangement and proposed application, the necessary service liquid
can be either totally or partially recirculated within the system,
conserving the amount of fresh make up liquid required. However,
when using the total recirculated arrangement, the operating suction
pressure must be 800 mbar or lower.
The direction of rotation is clockwise when viewed from the drive end
of the pump.
GENERAL TECHNICAL DATA
Unit PL 26 M PL 51 M
Speed 50 Hz
60 Hz
rpm 2900
3500
Max. Compression over pressure bar 0,3
Max. Admissible pressure difference bar 1,1
Hydraulic test (over pressure) bar 3
Moment of inertia of the rotating
pump parts and of the water filling kg . m² 0,003 0,005
Sound pressure level
at a suction pressure of 80 mbar (standard values) dB (A) 73
Service liquid
volume up to shaft level Liter 9,1 9,3
Max. Flow resistance
of the heat exchanger bar 0,2