SIHILPH-X- Liquid Ring Compressors LPH 40106, LPH 40411 LPH 45008, LPH 453160 pages

SIHILPH-X- Liquid Ring Compressors
LPH 40106, LPH 40411
LPH 45008, LPH 45316
VACUUM TECHNOLOGY KPH K 4
133.72120.56.01 E 08/2006
Pressure range: 0.2 to 1.5 bar
Suction volume range: 55 to 175 m³/h
CONSTRUCTION
Sterling SIHI liquid ring compressors are displacement
compressors with a simple but robust construction and the following
features and benefits:
Can handle almost all gases and vapours
Near isothermal compression
Oil free with no internal lubrication required
Able to handle quantities of liquid carry over
Low maintenance and safe operation
Low noise and almost vibration free
Available in a wide range of materials
Broad range of applications
O-Ring sealing as standard
Central drain plug as standard
Built in solids drain
Rotating metallic parts are non contacting to minimise wear
The Sterling SIHI liquid ring compressors LPH 40106 and LPH
40411 are one stage. They can be used without modification as
vacuum pumps up to a suction pressure of 150 mbar (for more
information see Catalogue Part LI 2).
The Sterling SIHI liquid ring compressors LPH 45008 and
LPH 45316 are two stage. They can be used without modification
as vacuum pumps up to a suction pressure of 33 mbar (for more
information see Catalogue Part LII 3).
APPLICATION
Transport and compression of dry gases and saturated vapours.
The pumps can also handle liquids. Compressors are used typically
where a pressure of up to 1.5 bar is required and only a limited
temperature increase due to the compression is permitted.
Applications include:
- The plastics processing industry for the recovery of
gases such as vinyl chloride
- The petrochemical industry for the compression of
flammable gases such as petroleum vapours or
hydrogen
- Gas transfer e.g. to a reactor.
NOTE
By continuously feeding the compressor with a small amount of
service liquid (usually water), the heat due to gas/vapour
compression is conducted away. This also replenishes the liquid
ring and ensures that it does not become saturated with process
media. The condensed gas and fluid can be separated in a liquid
separator (see Accessories Catalogue). Recharging the pump with
service liquid at ambient temperature enables the unit to condense
evacuated gases/vapours. More information is provided in the
accessory catalogues.
The rotation of the pump is clockwise when viewed from the drive
side.
GENERAL TECHNICAL DATA
Pump Type Units LPH 40106 LPH 40411 LPH 45008 LPH 45316
Speed Normal speed = 50 Hz
60 Hz
rpm 1450
1750
1450
1750
1450
1750
1450
1750
Max. Compression over atmospheric bar 0.8 or 1.2 1) 1.5 1.2 or 1.0 1)
Water pressure test (Overpressure) bar 3.0 3.0
Moment of inertia of rotating parts of pump
and of water content
kg . m² 0.0375 0.05 0.05 0.09
Surface noise level dB (A) 69...70 69...70
Minimum permissible pulley diameter for V- belt drive mm 160 160 or 180 1) 160 180 or 200 1)
Max. Gas Temperature dry
saturated
°C
°C
200
100
200
100
Service liquid
Max. permissible temperature
Max. viscosity
Max. density
°C
mm²/s
kg/m³
80
90
1200
80
90
1200
Liquid capacity up to middle of shaft litre 3.5 4.5 4.0 7.0
In selecting a compressor, avoid choosing one which is likely to be operating at a combination of its maximum permissible limits.
1) at 60Hz