Method and device for expanding a fluid
AssigneeAtlas Copco Airpower, Naamloze Vennootschap
InventorPeter Jozef Heirman
Life of this patent
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Abstract
Device for expanding a fluid, which device (1) comprises an inlet (2) for a high pressure fluid, an outlet (3) for a low pressure fluid, and a control valve (4) between the aforementioned inlet (2) and outlet (3) for expanding the fluid to a predefined pressure level, characterized in that the device (1) is further provided with one or more expanders (5) for expanding the fluid, of which one or more expanders (5) are connected in parallel with the control valve (4), whereby the device (1) is provided with a controller (8) configured to control the expanders (5) based on a flow rate (Qklep) of the fluid through the control valve (4).
Claims10
A device for expanding a fluid, which device (1), comprising:
- an inlet (2) for a high pressure fluid;
- an outlet (3) for a low pressure fluid;
- a control valve (4) between the inlet (2) and outlet (3) for expanding the fluid to a predefined pressure level;
- an expander (5) for expanding the fluid and connected in parallel with the control valve (4);
- and
- a controller (8) which is configured to control the expander (5) based on a flow rate (Qklep) of the fluid through the control valve (4).
A method for expanding a fluid by means of a device (1) comprising an inlet (2) for a high pressure fluid, an outlet (3) for a low pressure fluid, a control valve (4) between the inlet (2) and outlet (3) for expanding the fluid, and an expander (5) connected in parallel with the control valve (4), wherein the method comprises:
- controlling a flow rate (Qklep) of the fluid passing through the control valve (4) such that a pressure at the outlet (3) is regulated at a predefined pressure level;
- and
- controlling a flow rate of the fluid passing through the expander (5) on the basis of the flow rate (Qklep) passing through the control valve (4).
Dependencies are inferred from the claim text.