METHOD FOR MANUFACTURING HIGH-PRESSURE TANK

• Main Authors: KISHIDA TOMOYUKI, SAWAI OSAMU
• Format: Patent
• Language: English; Japanese
• Published: 14.02.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PISTONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SEALINGS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STORING OF DISTRIBUTING GASES OR LIQUIDS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a method for manufacturing a high-pressure tank in which a matrix resin is impregnated to acquire stable strength while suppressing looseness of a reinforcement fiber that is wound around a boundary part.SOLUTION: A method for manufacturing a high-pressure tank includes the steps of: preparing a liner that includes a liner body 11A continuing to a barrel part 14 in which a storage space S is formed and including a neck part 15 extending toward an opening 13 and a metal reinforcement body 40 disposed in the neck part 15, as a liner 11; forming a reinforcement fiber base material 12A at an outer peripheral surface 11a of the liner 11 by winding a reinforcement fiber 12a around the outer peripheral surface of the liner 11; and disposing the liner 11 around which the reinforcement fiber base material 12A is wound in a shaping mold 93 and injecting a matrix resin 11B between the shaping mold 93 and the liner 11 while applying internal pressure to the storage space S to impregnate the matrix resin 11B into the reinforcement fiber base material 12A and form a reinforcement layer 12.SELECTED DRAWING: Figure 7 【課題】境界部分に巻かれた強化繊維の弛みを抑えた状態で、マトリクス樹脂を含浸し、安定した強度を得ることができる高圧タンクの製造方法を提供する。【解決手段】高圧タンクの製造方法では、ライナ１１として、収容空間Ｓが形成された胴体部１４に連続し、開口部１３に向かって延在したネック部１５を有したライナ本体１１Ａと、ネック部１５に配置された金属製の補強体４０と、を備えたライナを準備する。ライナ１１の外周面に、強化繊維１２ａを巻き付けることにより、ライナ１１の外周面１１ａに強化繊維基材１２Ａを形成する。強化繊維基材１２Ａが巻き付けられたライナ１１を、成形型９３に配置し、収容空間Ｓに内圧をかけながら、成形型９３とライナ１１との間に、マトリクス樹脂１１Ｂを注入することにより、強化繊維基材１２Ａにマトリクス樹脂１１Ｂを含浸し、補強層１２を形成する。【選択図】図７