本文へジャンプ

成果報告書詳細
管理番号20170000000127
タイトル平成28年度中間年報 水素利用技術研究開発事業 燃料電池自動車及び水素ステーション用低コスト機器・システム等に関する研究開発 水素ステーションの高圧水素用ホースとシールシステムに関する研究開発
公開日2017/7/6
報告書年度2016 - 2016
委託先名NOK株式会社
プロジェクト番号P13002
部署名新エネルギー部
和文要約
英文要約Title: “Research and Development of Technology for Hydrogen Utilization/ Research and Development of Low-cost Equipment and System for Fuel Cell Vehicles and Hydrogen Stations/ Research and Development of Low-cost Equipment, System and their Materials for Hydrogen Stations/ Research and Development of High-pressure Hydrogen Hose and Sealing System for Hydrogen Stations/” FY2016 Annual Report from FY2013 to FY2017

Sealing ability of O-rings and rubber material properties for high pressurized hydrogen have been studied in order to design seals and develop materials for seals in this research. In FY2016, we have researched sealing ability and failure of O-rings as a static face seal at high pressure condition and measuring methods of hydrogen permeation for rubber materials in order to standardize the methods. The main researches in FY2016 are as follows:

(1) Research of sealing system for high pressurized hydrogen
(1-1) Research of rubber material for sealing of hydrogen
Both gas chromatography and differential pressure method enabled to measure the permeation parameters which are hydrogen solubility and diffusion in polymeric material. Permeation parameters of hydrogen in various rubber materials have been measured using these methods in order to clear the guideline of material design for sealing of hydrogen. Moreover permeation property was measured after high-cycle pressure test in order to select the suitable rubber material. The permeation property after the test was maintained until 50000 cyclic pressure.

(1-2) Sealing ability and failure of O-ring as a static face seal after cyclic pressure test
Sealing ability and failure of O-ring which has 3.3mm diameter as a static face seal were evaluated at -40 and 80 oC after cyclic pressure test (gas: hydrogen, pressure: 90MPa, repeat count: 6600) in FY2016. Compression ratio of O-ring was set to 10 and 30% and Surface roughness in the groove was adjusted at Ra 0.8, 1.6 and 3.2ーm. Failures of wear, extrusion and blister were observed at O-ring surface when the compression ratio was lower at -40 and 80 oC. On the other hand, those failures hardly occurred at higher compression. The failures at O-ring surface depended on the compression ratio. Although failures were observed at O-ring surface, leakage rate based on interface leak and permeation through the rubber material hardly changed after the test. These results meant that sealing ability was maintained after the cyclic pressure test.

(2) Standardization of precise and repeatable measurement for permeation parameters
The precise and repeatable method of permeation parameters for hydrogen at room temperature was developed. The parameters were also measured at Kyushu Univ. to check the value with each other.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る