Solid particle magnetic deflection system for protection of steam turbine plants
AssigneeWestinghouse Electric Corp.
InventorPaul W. Viscovich
Life of this patent
Estimating the term…
Abstract
Metallic particles entrained in the flow of steam being supplied by a steam generator to a steam turbine, the metallic particles being entrained in the flow of steam and at least in part having exfoliated from boiler pipes of the steam generator, are deflected from an axially directed steam flow path outwardly, toward the outer circumference of the path at which they are trapped and collected and thereby removed from the steam flow supply to the turbine.
Claims22
A method for removing metallic particles from a flow of steam supplied by a steam generator through a supply path to a steam turbine, the metallic particles being entrained in the flow of steam and, at least in part, having defoliated from boiler pipes of the steam generator, comprising:
- defining an axial section of a predetermined axial direction, circumferential configuration and length, in the steam flow path from the steam generator to the steam turbine;
- producing a magnetic field in the said defined section of the steam flow path, having an axis generally aligned with the predetermined axis thereof, the field being of a strength to deflect entrained metallic particles from the predetermined axial direction of flow and outwardly, toward the outer circumference of the axial path section;
- and
- trapping and collecting the deflected metallic particles, thereby to remove same from the flow of steam supplied to the turbine.
A system for removing metallic particles from a flow of steam being supplied by a steam generator to a steam turbine, the metallic particles being entrained in the flow of steam and, at least in part, having exfoliated from boiler pipes of the steam generator, comprising:
- means for defining a section, of a predetermined axial direction, circumferential configuration and length, of the steam flow path from the steam generator to the steam turbine;
- means for producing a magnetic field in the said defined section of the steam flow path, having an axis generally aligned with the predetermined axis thereof, the field being of a strength to deflect entrained metallic particles from the predetermined axial direction of flow and outwardly, toward the outer circumference of the axial path section;
- and
- means for trapping and collecting the deflected metallic particles, thereby to remove same from the steam flow supplied to the turbine.
A system as recited in 16, wherein the respective, different magnetic field strengths of said respective electromagnets deflect the corresponding metallic particles of respective, different masses, to a common, predetermined location.
A system for removing metallic particles from a flow of steam, comprising:
- a steam generator;
- a steam turbine having at least a first set of inlet nozzles;
- interconnecting piping connecting said steam generator to said first set of inlet nozzles of said steam turbine for supplying a flow of steam from said steam generator to said steam turbine;
- means for producing a magnetic field within a selected section of said interconnecting piping adjacent the connection thereof to said inlet nozzles of said steam turbine, said field having an axis generally aligned with the axial direction of steam flow within said selected section of interconnecting piping and being of a strength for deflecting metallic particles, entrained in the generally axial direction of steam flow, outwardly toward a predetermined portion of the interior circumference of and at a predetermined location within said selected section of piping;
- and
- means disposed at said predetermined location of the interior surface of said selected section of piping for trapping and collecting the deflected metallic particles, thereby to remove same from the flow of steam supplied to the turbine.
Dependencies are inferred from the claim text.