método para isolamento de estruturas submarinas complexas

• Main Authors: JIE FENG, MARK W. BROWN, XUE CHEN, KAMESH R. VYAKARANAM, JEFFERY D. ZAWISZA, RUJUL M. MEHTA, JEFFREY D. WENZEL, MICHAEL T. MALANGA, PANKAJ GUPTA, DWIGHT D. LATHAM, LIANGKAI MA
• Format: Patent
• Language: Portuguese
• Published: 05.06.2018
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

a presente invenção se refere a um processo para reduzir as tensões internas no isolamento moldado sobre tubos complexos, de preferência, tubos submarinos complexos, para reduzir a fissuração nos isolamentos moldados. os materiais de isolamento aplicam-se a tubos complexos que compreendem ramificações, isto é, válvulas e similares, podem ser suscetíveis a fissuras em, ou perto de onde a ramificação se liga ao tubo à medida que o revestimento de material de isolamento cura ou endurece. o processo da presente invenção tem como objetivo reduzir fissuração de pós-moldados, reduzindo partes moldadas com tensão na junção de ramificação/tubo. isto é realizado fornecendo uma pré-forma na junção de ramificação/tubo ou perto de uma junção de ramificação/tubo antes de aplicar o revestimento de material de isolamento. The present invention relates to a process to reduce internal stresses in insulation molded onto complex pipes, preferably complex subsea pipe, to reduce cracking in the molded insulation. Insulation materials applies to complex pipes comprising branches, i.e., valves, and the like, may be susceptible to cracking at, or near where the branch connects to the pipe as the coating of insulation material cures or hardens. The process of the present invention aims to reduce post molded cracking by reducing molded in stress at the branch/pipe junction. This is accomplished by providing a preform at or near a branch/pipe junction prior to applying the coating of insulation material.