SEAL STRUCTURE OF HIGH PRESSURE VESSEL AND SEAL MEMBER USED THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a seal structure and a seal member used therefor, capable of securing airtightness without causing leakage, even when fluid is filled in a high pressure vessel, under a pressure of 35 MPa or more, also under a pressure of 90 MPa or more.;SOLUTION: This seal structure has for a seal member 5 arranged between the high pressure vessel 1 and an accessory 2 adjacent to this high pressure vessel. The seal structure of the high pressure vessel is characterized in that a cylindrical seal member 5 includes a first tapered surface 5a and a second tapered surface 5b on the outer periphery, the first tapered surface 5a is formed so as to become smaller in a diameter from the second tapered surface 5b, the second tapered surface 5b is formed so as to become smaller in a diameter from the first tapered surface 5a, the fist tapered surface is fitted to a tapered surface 1e arranged in an opening part 1b of the high pressure vessel, and the second tapered surface 5b is fitted to a tapered surface 2c arranged in an opening part 2b of the accessory.;COPYRIGHT: (C)2012,JPO&INPIT