Element, device and method for compression of a gas to be compressed having a low temperature
AssigneeAtlas Copco Airpower, Naamloze Vennootschap
InventorsMukesh Lalchandani, Tom Van Troos, Simon De Bock
Life of this patent
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Abstract
An element for compression of a gas to be compressed having a low temperature of −40° C. or lower, which element (1) is provided with a housing (2) containing at least one rotor (3) which is mounted rotatably with its shaft (5) with respect to the housing (2) and with an inlet (6) for the gas to be compressed and an outlet (7) for compressed gas, characterized in that the element (1) is provided with a heating means for an end (9a) of the shaft (5) of the rotor (3) located closest to the inlet (6).
Claims20
Element for compression of a gas to be compressed having a low temperature of −40° C. or lower,
- the element (1) is provided with a housing (2) containing at least one rotor (3) which is mounted rotatably around its shaft (5) with respect to the housing (2) and with an inlet (6) for the gas to be compressed and an outlet (7) for compressed gas,
- characterized in that the element (1) is provided with a heating means for an end (9a) of the shaft (5) of the rotor (3) located closest to the inlet (6),
- characterized in that the heating means comprises a first injection circuit (8) for injecting a heating medium at a temperature higher than the low temperature to said end (9a) of the shaft (5) of the rotor (3), and
- characterized in that the rotor (3) is mounted rotatably with respect to the housing (2) by means of bearings (4) and that the element (1) is provided with a second injection circuit (14) for injecting heating medium at a temperature higher than the low temperature to the bearings (4).
A method for compression of a gas to be compressed having a low temperature of −40° C. or lower by means of an element, which element (1) is provided with a housing (2) containing at least one rotor (3) which is mounted rotatably around its shaft (5) with respect to the housing (2) and with an inlet (6) for the gas to be compressed and an outlet (7) for compressed gas,
- characterized in that an end (9a) of the shaft (5) of the rotor (3) located closest to the inlet (6) is heated by a first injection circuit (8) for injecting a heating medium at a temperature higher than the low temperature to said end (9a) of the shaft (5) of the rotor (3), and
- characterized in that the rotor (3) is mounted rotatably with respect to the housing (2) by means of bearings (4) and the bearings (4) are heated by a second injection circuit (14) for injecting heating medium at a temperature higher than the low temperature to the bearings (4).
Dependencies are inferred from the claim text.