Heated cover for pipeline backflow preventer component assembly
AssigneeCommercial Insulation Company
InventorMichael J. Devine
Life of this patent
Estimating the term…
Abstract
A heated, insulated cover for a portion of a pipeline with valve and backflow preventer components exposed to the atmosphere, the cover being sectionalized so as to be assemblable around the valve components, with hand manipulated clamps to hold the cover together, an electric heating element inside the cover to keep it above freezing temperature, drain openings in the cover at ground level to let any water drain out of the cover, doors in the cover to permit inspection and testing of the components when the cover is in place.
Claims20
A heated cover for pipeline valve and backflow preventer components above ground comprising an assemblable insulated housing having side walls and a top wall and adapted to substantially enclose the components with an open bottom of said housing to permit the pipeline to pass through upstream and downstream of the components, said housing being substantially spaced outwardly from the components, an electric heating element disposed within said housing, means to supply electric power to said element, spaced openings passed through at least opposed said side walls of said housing adjacent said open bottom to drain water discharged from the components from within and outwardly of said housing, said housing being formed of sectionalized portions which are assemblable into a complete cover around the components, said housing having an opening formed in said top wall between said sectionalized portions through which a stem of a manually closeable valve extends outwardly thereof for manipulation of the valve without removal of said cover.
A heated disassemblable cover for a section of a pipeline having a valve and backflow preventer components above ground level and pipeline upstream and downstream of the components underground, said cover comprising a rigid material formed into a housing a weather resistance impervious material substantially enclosing and spaced outwardly of the components, said cover being sectionalized into a plurality of manually assemblable portions including portions on two sides of a longitudinal plane passing through the center line of the pipeline upstream and downstream of the components, said cover having side walls and a top wall and an open bottom, including at last one hinged access door in at least one of said side walls, for providing access to and inspection and testing of the components while said cover encloses the components without removal of said cover, said cover including an opening in said top wall adapted to permit a valve stem to pass therethrough and a hand wheel of a valve to be located outside said cover and operable when said cover is in place, said cover having heat insulation material covering substantially all of the inside surface thereof spaced outwardly of the components, an electric heating element inside said cover and spaced outwardly of the components, means to supply electric power to said heating element, said cover having at least one opening through at least one of said side walls closely adjacent said open bottom to permit water discharged from the components to flow from inside to outside said cover.
A disassemblable cover for a section of a pipeline having valve and backflow preventer components above ground level and underground pipeline upstream and downstream of the components, said cover comprising a framework means supporting a skin means of weather resistant impervious material spacedly outwardly of the components, said cover being sectionalized into a plurality of manually assemblable portions including top portions on two sides of a longitudinal plane passing through the center line of the pipeline upstream and downstream of the components, said cover including a hinged access door for inspection and testing of the components while said cover is in place, said cover including at least one opening in said top portion adapted to permit a valve stem to pass therethrough and a manually operated hand wheel of a valve to be disposed outwardly of said cover and operable to close a valve when said cover is in place, said cover having insulation material covering substantially all of the inside surface thereof, an electric heating element connected to one of said assemblable portions inside said cover, means to supply electric power to said heating element, said cover having at least one opening therethrough at ground level to permit water discharged from the components within said cover to flow outwardly therethrough.
Dependencies are inferred from the claim text.