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US 4,363,504 AGranted
High temperature lined conduits, elbows and tees
AssigneeCurtiss-Wright Corporation
InventorsAngelo De Feo, Edward Drewniany
Life of this patent
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AssigneeCurtiss-Wright Corporation
InventorsAngelo De Feo, Edward Drewniany
Estimating the term…
A high temperature lined conduit comprising, a liner, a flexible insulating refractory blanket around and in contact with the liner, a pipe member around the blanket and spaced therefrom, and castable rigid refractory material between the pipe member and the blanket. Anchors are connected to the inside diameter of the pipe and extend into the castable material. The liner includes male and female slip joint ends for permitting thermal expansion of the liner with respect to the castable material and the pipe member. Elbows and tees of the lined conduit comprise an elbow liner wrapped with insulating refractory blanket material around which is disposed a spaced elbow pipe member with castable refractory material between the blanket material and the elbow pipe member. A reinforcing band is connected to the elbow liner at an intermediate location thereon from which extend a plurality of hollow tubes or pins which extend into the castable material to anchor the lined elbow and permit thermal expansion. A method of fabricating the high temperature lined conduit, elbows and tees is also disclosed which utilizes a polyethylene layer over the refractory blanket after it has been compressed to maintain the refractory blanket in a compressed condition until the castable material is in place. Hot gases are then directed through the interior of the liner for evaporating the polyethylene and setting the castable material which permits the compressed blanket to come into close contact with the castable material.
A high temperature lined elbow comprising, an elbow liner member, a flexible insulating blanket around and in contact with said elbow liner member, an elbow pipe member around said blanket and spaced therefrom, castable rigid refractory material between said blanket and said elbow pipe member, and centering means connected to said elbow liner member and extending toward said elbow pipe member and into said castable material whereby said elbow liner member can expand from said centering means with respect to said elbow pipe member.
A centering anchor for a conduit having an inner liner member, a pipe member around and spaced outwardly of the liner member and a castable rigid material between the liner member and the pipe member and in contact with the pipe member, comprising:
A high temperature lined tee comprising, a first liner member, a second liner member connected to said first liner member and extending at an angle therefrom, a flexible insulating blanket around and in contact with said first and second liner members, a first pipe member around and spaced from the blanket covering said first liner member, a second pipe member connected and extending at an angle to said first pipe member disposed around and spaced from the blanket covering said second liner member, castable rigid refractory material between said pipe members and said flexible insulating blanket, and centering means connected to said first liner member adjacent the junction between said first and second liner members extending into said castable material.
A high temperature lined conduit comprising a liner member, a flexible insulating blanket around and in contact with said liner member, a pipe member around said blanket and spaced therefrom, and castable rigid refractory material between said pipe member and said blanket, said insulating blanket being compressed to a fraction of its original thickness and wrapped with a layer of vaporizable material which is adapted to be heated and vaporized to permit close contact between said insulating blanket and said castable rigid refractory material.
A high temperature lined conduit comprising, a liner member, a flexible insulating blanket around and in contact with said liner member, a pipe member around said blanket and spaced therefrom, a castable rigid refractory material between said pipe member and said blanket, a fixing member connected between said liner member and said pipe member adjacent one end thereof for substantially holding said liner member with respect to said pipe member in the vicinity of said fixing member and permitting the thermal expansion of said liner member with respect to said pipe member, said fixing member comprising a truncated cone having an inner diameter end connected to said liner member and an outer diameter end connected to said pipe member, and at least one anchor extending from said cone and into said castable material.
A high temperature lined conduit comprising, a liner member, a flexible insulating blanket around and in contact with said liner member, a pipe member around said blanket and spaced therefrom, castable rigid refractory material between said pipe member and said blanket, at least one additional conduit having one additional liner member, an additional flexible insulating blanket, an additional pipe member and additional castable material, said additional conduit connected to said first-mentioned conduit, said first-mentioned pipe member and said additional pipe member being connected at respective ends thereof by a backing strip connected to the inside diameter of said respective ends, and flexible insulating refractory material connected between facing ends of said first-mentioned castable material and said additional castable material.
A high temperature lined conduit comprising, a liner member, a flexible insulating blanket around and in contact with said liner member, a pipe member around said blanket and spaced therefrom, castable rigid refractory material between said pipe member and said blanket, and a fixing member connected between said inner liner member and said pipe member adjacent one end thereof for substantially holding said liner member with respect to said pipe member in the vicinity of said fixing member and permitting the thermal expansion of said liner member with respect to said pipe member, said fixing member comprising a truncated cone having an inner diameter end connected to said liner member and an outer diameter end connected to said pipe member, said truncated cone including a plurality of slots adjacent at least one of said inner diameter end and said outer diameter end of said truncated cone, said slots extending from said at least one of said inner diameter end and said outer diameter end and into said truncated cone.
A high temperature lined conduit comprising, a liner member, a flexible insulating blanket around and in contact with said liner member, a pipe member around said blanket and spaced therefrom, a castable rigid refractory material between said pipe member and said blanket, and at least one additional conduit having one additional liner member, flexible insulating blanket, pipe member and castable material connected to said first mentioned conduit, said first mentioned pipe member and said additional pipe member being connected at respective ends thereof by a backing strip connected to the inside diameter of said respective ends, said backing strip comprising a ring connected to the inside diameter of one of said first mentioned and additional pipe members and slidably receiving the inside diameter of the other of said first mentioned and additional pipe members, and means connecting said first mentioned and additional pipe members together.
Dependencies are inferred from the claim text.