JP2023027963A - 高圧タンクおよびその製造方法 - Google Patents
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Abstract
Description
以下に、まず、図1~図4Bを参照しながら、高圧タンク10を備えたタンクユニット1の実施形態について説明する。図1および図2に示すように、本実施形態に係るタンクユニット1は、高圧タンク10と、高圧タンク10の両端に接続される一対の接続部材30、30と、を備えている。
2-1.準備工程について
以下に、図5A~図7を参照しながら、高圧タンク10の製造方法を説明する。本実施形態では、まず、準備工程において、図2および図5A、5Bで示すように、収容空間Sが形成された胴体部14と、胴体部14に連続し開口部13が形成されたネック部15と、を有したライナ11(ライナ単体)を準備する。ネック部15は、円筒形状であり、端部側は径方向には広がっていない。
この工程では、図5A、図5Bに示すように、金属製の筒状体40に、ネック部15を挿入し、ネック部15に筒状体40を配置する。具体的には、ライナ11の端部から、ネック部15を筒状体40に挿入し、筒状体40の端部48Bを含む部分を、ライナ11の胴体部14の肩部14bに当接させる。
この工程では、筒状体40の内周面41にネック部15が倣うように、ネック部15の内周面15aから筒状体40に向かってネック部15を熱圧成形し、係止部43(具体的には凹部43A)にネック部15を係止させる。さらに、本実施形態では、開口部13側に配置される端部48の内周面48aは、筒状体40の径方向に広がった形状であり、本実施形態では、端部48の内周面48aに倣うように、ネック部15を熱圧成形する。
この工程では、図7に示すように、筒状体40とともに、ライナ11に補強層12を形成する。具体的には、筒状体40とともにライナ11に、例えばフィラメントワインディング法などにより、ライナ11の外周面11aに、マトリクス樹脂(熱硬化性樹脂)が含浸された繊維束を巻回するにより、補強層12を形成する。
Claims (6)
- 流体を収容する収容空間が形成され、少なくとも一端側に開口部が形成されたライナと、前記ライナの外表面を覆う繊維強化樹脂からなる補強層と、を有した高圧タンクの製造方法であって、
前記収容空間が形成された胴体部と、前記胴体部に連続し前記開口部が形成されたネック部と、を有し、熱可塑性樹脂からなる前記ライナを準備する工程と、
内周面に凸状または凹状の係止部が形成された金属製の筒状体に、前記ネック部を挿入し、前記ネック部に前記筒状体を配置する工程と、
前記筒状体の内周面に前記ネック部が倣うように、前記ネック部の内周面から前記筒状体に向かって前記ネック部を熱圧成形し、前記係止部に前記ネック部を係止させる工程と、
前記筒状体とともに、前記ライナに補強層を形成する工程と、
を少なくとも含むことを特徴とする高圧タンクの製造方法。 - 前記係止部は、前記内周面の周方向に間隔を空けて形成された複数の凸部または複数の凹部であることを特徴とする請求項1に記載の高圧タンクの製造方法。
- 前記筒状体の両端部のうち、前記開口部側に配置される端部の内周面は、前記筒状体の径方向に広がった形状であり、
前記ネック部を係止させる工程において、前記端部の内周面に倣うように、前記ネック部を熱圧成形することを特徴とする請求項1または2に記載の高圧タンクの製造方法。 - 流体を収容する収容空間が形成され、少なくとも一端側に開口部が形成されたライナと、前記ライナの外表面を覆う繊維強化樹脂からなる補強層と、を有した高圧タンクであって、
前記ライナは、熱可塑性樹脂からなり、前記収容空間が形成された胴体部と、前記開口部が形成されたネック部と、を有し、
前記ネック部と前記補強層との間には、内周面に凸状または凹状の係止部が形成された金属製の筒状体が配置されており、前記係止部に前記ネック部が係止されていることを特徴とする高圧タンク。 - 前記係止部は、前記内周面の周方向に間隔を空けて形成された複数の凸部または複数の凹部であることを特徴とする請求項4に記載の高圧タンク。
- 前記筒状体の両端部のうち、前記開口部側に配置される端部の内周面は、前記筒状体の径方向に広がった形状であり、
前記ネック部は、前記端部の内周面に倣うように、前記径方向に広がっていることを特徴とする請求項4または5に記載の高圧タンク。
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