Pressure-relieving device for steam generators and the like
AssigneeBertin & Cie
InventorsMax Sagner, Jacques Souquet
Life of this patent
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Abstract
The pressure in a high-pressure steam boiler or other pressure fluid tank is occasionally relieved by means of a discharge device having a pressure-relief valve mounted on an ejection conduit opening into a hood connected to a discharge conduit. A break in continuity is provided between this ejection conduit and this hood in order to allow relative movements thereof under thermal expansion; furthermore the ejection conduit opens into the hood through a generally transversely directed nozzle system so that the jet issuing therefrom has a zero or negligible axial velocity component.
Claims7
A fluid discharge system for relieving pressure in a high-pressure steam boiler or like reservoir, of the kind comprising a discharge fluid collecting flue hood and a valve-controlled exhaust conduit having an upstream end connected to said reservoir and a downstream end opening into said hood, said conduit and hood being mechanically separate from each other by a break in continuity to allow some relative movement upon fluid action thereon,
- wherein the improvement comprises the provision of an air ejector assembly overridden by said hood and fluidically associating the same to said exhaust conduit, said assembly comprising
- a nozzle device fitted at said exhaust conduit downstream end and designed to issue pressure fluid therefrom in thrust-balanced high-velocity jet form, and
- a duct device opening inside said hood and registering with said nozzle device, whereby the high-velocity jet issuing therefrom entrains air through said duct device and thence through said hood.
Dependencies are inferred from the claim text.