초록 ▼

A method and apparatus for providing metal or non-metal vessels, including straight and curved pipes and various pipe connections, such as T's, elbows, swages, etc., and pressure containing vessels such as tanks, with an external composite lining of a webbing of biaxial or triaxial weave preferably

A method and apparatus for providing metal or non-metal vessels, including straight and curved pipes and various pipe connections, such as T's, elbows, swages, etc., and pressure containing vessels such as tanks, with an external composite lining of a webbing of biaxial or triaxial weave preferably composed of fiberglass which is pre-impregnated with a high temperature heat curable polymer composition capable of being heat cured at a temperature range of from about 275.degree. F. to about 375.degree. F. The vessel is prepared for bonding by abrasive cleaning and by solvent cleaning. Metal imperfections are then filled with an epoxy. A small amount a quick setting epoxy is employed to attach one end of the web to the external surface of the vessel in oriented position for wrapping of the web in intimate surface-to-surface contact with the vessel. During wrapping only enough tension is applied to the pre-impregnated webbing to eliminate any wrinkles. The number of layers of the impregnated webbing will be determined by the safe pressure containing capability of the pipe or vessel and its composite lining. An external heating element is then placed about the wrapping of pre-impregnated webbing material so as to be in substantially intimate relation therewith and is energized to apply sufficient heat for a sufficient period of time to completely cure the epoxy surface filler and to cure the polymer resin components of the pre-impregnated woven wrappings of webbing.

대표청구항 ▼

[ I claim:] [1.]1. A method for applying a polymer/webbing composite structural lining about the external surface of a pressure containing vessel, comprising:(a) cleaning the external surface of the vessel;(b) filling external surface imperfections in the external surface of the vessel with a polyme

[ I claim:] [1.]1. A method for applying a polymer/webbing composite structural lining about the external surface of a pressure containing vessel, comprising:(a) cleaning the external surface of the vessel;(b) filling external surface imperfections in the external surface of the vessel with a polymer filler composition;(c) applying quick setting polymer material to a selected surface area of the vessel where the structural repair lining is to begin;(d) during the uncured state of the quick setting polymer material sticking one end of an elongate web of triaxially woven fiberglass fabric material pre-impregnated with a high temperature thermosetting polymer to the uncured layer of quick setting polymer material, with the elongate web being oriented for wrapping about the vessel and allowing the quick setting polymer material to become cured thus fixing one end of the elongate web to the external surface of the vessel;(e) wrapping the elongate web of said high temperature thermosetting polymer pre-impregnated triaxially woven fiberglass fabric webbing about the vessel such that the elongate web is in surface-to-surface engagement with the outer surface of the vessel and defines a desired number of layers covering the vessel;(f) assembling a heater about the wrapped elongate web; and(g) with the heater, applying sufficient heat at a temperature in the range of from about 100.degree. F. to about 400.degree. F. for a sufficient period of time to cure the polymer of the elongate web of polymer pre-impregnated, heat cured polymer/fiberglass fabric material and thus define the structural lining about the external surface of the pressure containing vessel.