초록 ▼

A marina pipe includes a flexible conduit resistant to mechanical stresses, the conduit adapted to surround the secondarily contained flexible piping. The conduit comprises a metallic core and a thermoplastic jacket. The secondarily contained flexible piping comprises an inner supply pipe, wherein t

A marina pipe includes a flexible conduit resistant to mechanical stresses, the conduit adapted to surround the secondarily contained flexible piping. The conduit comprises a metallic core and a thermoplastic jacket. The secondarily contained flexible piping comprises an inner supply pipe, wherein the inner pipe is comprised of a first, inner layer fabricated from nylon, a second, intermediate layer comprising a nylon reinforced wrap, and a third, outer layer comprising a polyethylene material, the nylon inner material, the nylon wrap and the polyethylene outer layer being extruded simultaneously to form the inner pipe. The secondarily contained flexible piping further comprises a flexible outer secondary containment pipe within which the inner supply pipe is carried, the outer pipe being fabricated from a fuel impervious material and having a plurality of radially projecting flanges disposed between the inner supply pipe and the outer secondary containment pipe, to provide a locking engagement of the pipes with respect to each other and to provide for a flow passage between the pipes. Adjacent to the outer flanged pipe is a fire resistant silica needle mat layer.

대표청구항 ▼

What is claimed is: 1. A marina piping comprising: a primary pipe for supplying a fluid between a first location and a second location; a secondary pipe for carrying the primary pipe; a flexible conduit resistant to mechanical stresses, the conduit adapted to surround the primary and secondary pipe

What is claimed is: 1. A marina piping comprising: a primary pipe for supplying a fluid between a first location and a second location; a secondary pipe for carrying the primary pipe; a flexible conduit resistant to mechanical stresses, the conduit adapted to surround the primary and secondary pipes, the flexible conduit including a galvanized steel metallic core; a high temperature and fire resistant insulating layer surrounding the secondary pipe; and one of a low density polyethylene and a medium density polyethylene jacket surrounding the insulating layer, wherein the insulating layer is disposed between the secondary pipe and the polyethylene jacket, and the polyethylene jacket is disposed between the insulating layer and the metallic core. 2. The marina piping of claim 1, wherein the insulating layer is a silica needle mat having a laminated backing. 3. The marina piping of claim 2, wherein the silica needle mat layer is essentially 0.125 inches thick. 4. The marina piping of claim 1, wherein the primary pipe includes: a first, inner layer made of a nylon material; a second, intermediate layer comprising a nylon reinforced wrap; and a third, outer layer comprising a medium density hexane copolymer, wherein the nylon inner layer, the nylon wrap, and the medium density hexane copolymer outer layer are extruded simultaneously to form the primary piping. 5. A marina piping comprising: a primary pipe chemically compatible and impervious to fluids to be transmitted therethrough; a flexible secondary pipe within which the primary pipe is carried; a flexible conduit resistant to mechanical stresses, the conduit adapted to surround the flexible secondary pipe, the flexible conduit comprising a metallic core and thermoplastic jacket surrounding the metallic core; an insulating layer comprising a silica needle mat material surrounding the secondary pipe; and a metallized polyester film surrounding the silica needle mat, wherein the metallized polyester film is disposed between the silica needle mat and the metallic core of the flexible conduit. 6. The marina piping of claim 5, wherein the thickness of the silica needle mat layer is essentially 0.125 inch. 7. The marina piping of claim 5, wherein the silica needle mat layer is sandwiched between the secondary pipe and a metallized polyester film. 8. The marina piping of claim 7, further comprising a layer of low or medium density polyethylene over the metallized polyester film. 9. The marina piping of claim 7, wherein the metallized polyester film is aluminized. 10. The marina piping of claim 5, wherein the primary pipe includes a layer of a medium density hexane copolymer material. 11. The marina piping of claim 5, wherein the layer of silica needle mat material has a laminated backing for facilitating application to the pipe. 12. The marina piping of claim 2, wherein the laminated backing is a metallized polyester film. 13. The marina piping of claim 1, wherein the primary pipe comprises: an inner layer made of a nylon material, the nylon inner layer having an inner surface in contact with the fluid flowing between the first and second locations; and a first intermediate layer surrounding the nylon inner layer, the first intermediate layer consisting of a sheet of metallized polyester. 14. The marina piping of claim 13, wherein the primary pipe further comprises: a second intermediate layer surrounding the first intermediate layer, the second intermediate layer consisting of a nylon reinforced wrap; a third intermediate layer consisting of a medium density hexane copolymer surrounding the second intermediate layer; and a polyester sheet surrounding the third intermediate layer. 15. A mulit-layered piping system for transporting a fluid from one location to another, the pipe comprising: a primary pipe having a interior surface in contact with the fluid; a secondary pipe surrounding an outer surface of the primary pipe, the secondary pipe having a plurality of flanges projecting radially inward, the flanges and the outer surface of the primary pipe defining a plurality of passages for transporting the fluid axially along a length of the piping system in the event a leak occurs in the primary pipe; a fire resistant insulating layer comprising a silica needle mat surrounding the secondary pipe; and a first sheet of metallized polyester surrounding the insulating layer. 16. The piping system of claim 15, wherein the primary pipe comprises: a nylon inner layer that defines the inner surface of the primary pipe that contacts the fluid flowing through the primary pipe; a second sheet of metallized polyester surrounding an exterior surface of the nylon inner layer; a woven nylon reinforce blanket surrounding and the metallized polyester sheet, such that an; a layer of medium density hexane copolymer material overlaying the nylon reinforce blanket; and a polyethylene sheet surrounding the medium density hexane copolymer. 17. The piping system of claim 16, wherein at least one of the first and second metallized polyester sheets is aluminized. 18. The piping system of claim 15, wherein the first sheet of metallized polyester is bonded to the insulating layer. 19. The piping system of claim 15, wherein the primary pipe is slideably engages the secondary pipe. 20. The piping system of claim 15 further comprising a flexible conduit surrounding the primary and secondary pipes, the plastic jacket comprising a metallic core and a plastic jacket encasing an exterior of the metallic core, wherein the secondary pipe slideably engages the flexible conduit.