COOLING STRUCTURE OF HIGH TEMPERATURE PIPELINE AND COOLING SYSTEM OF HIGH TEMPERATURE PIPELINE

• Main Authors: SAKATA FUMITOSHI, URAKA YASUTAKA, WATANABE HIROTSUYO, OYAMA HIROYUKI, MATSUO TAKESHI, KATO CHIKAKO
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2019
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PIPES; STEAM ENGINES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a cooling structure of a high temperature pipeline which inhibits non-uniformity of cooling effect in a cooled part to extend a life of a pipeline uniformly and improve reliability of a plant to which the high temperature pipeline is applied.SOLUTION: A cooling structure 1 of a pipeline cools a welding part 5 of a pipeline 2 in which an outer peripheral surface 2a is covered by a first heat insulation material 3 and includes: a second heat insulation material 27 which is spaced apart from the outer peripheral surface 2a of the pipeline 2 from which a part of the first heat insulation material 3 is removed and covers the welding part 5 of the pipeline; a supply part 14 which supplies cooling air for cooling the welding part 5; and a discharge port 30 which discharges the cooling air supplied from the supply part 14 to the outer peripheral surface 3a side of the first heat insulation material 3.SELECTED DRAWING: Figure 1 【課題】被冷却部における冷却効果の不均一性を抑制することで、配管寿命を均一に延命化させて、高温配管が適用されるプラントの信頼性を向上することを目的とする。【解決手段】配管の冷却構造１は、外周面２ａを第１断熱材３に被覆された配管２の溶接部５を冷却する配管の冷却構造１であって、第１断熱材３の一部が撤去された配管２の外周面２ａから離間し、かつ配管の溶接部５を被覆する第２断熱材２７と、溶接部５を冷却する冷却空気を供給する供給部１４と、供給部１４から供給された冷却空気を第１断熱材３の外周面３ａ側へ排出する排出口３０と、を備える。【選択図】図１