Furnace front wall seals
AssigneeCombustion Engineering, Inc.
InventorRichard Kalinowski
Life of this patent
Estimating the term…
Abstract
A gland seal for addition to a boiler and furnace structure which has pipes (20) passing through a waterwall (12) and seal box (30). The gland seal includes a packing (40) of ceramic rope of square cross-section wrapped on the pipes (20) adjacent the front plate (34) of the seal box (30) with a hose clamp (41) radially constricting the packing and a pressure plate (42) driven by nuts (46) on threaded studs (44) adjacent the pipes (20) axially constricting the packing to eliminate ash leakage through the waterwall joint.
Claims5
In a furnace waterwall having a pipe extending therethrough and through a seal box front plate, the improvement comprising a gland seal outside of the seal box which includes:
- a ceramic rope packing surrounding said pipe and abutting said seal box front plate;
- a metal clamp band surrounding and radially constricting said ceramic band;
- and
- a compression plate adjacent said pipe and compressing said ceramic rope in the direction of said seal box front plate.
Dependencies are inferred from the claim text.