SUPERHIGH PRESSURE LIQUID SEALING STRUCTURE

• Main Authors: KAWAHARA KATSUMI, MISHINA SHOTARO
• Format: Patent
• Language: English
• Published: 19.03.1993
• Subjects: BLASTING; CYLINDERS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; ENGINEERING ELEMENTS AND UNITS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; THERMAL INSULATION IN GENERAL; WEAPONS

PURPOSE:To prolong the service life of a sealing mechanism in a superhigh pressure liquid sealing structure. CONSTITUTION:This sealing structure is provided with a seal assembly 11, where an outer member 1 and an inner member 2 inserted into the inner side are installed, and a first L-shaped seal ring 21 with a peripheral wall part 21a being in contact with the inner member 2 and a longitudinal wall part 21b extending outward in the radial direction almost orthogonal with this peripheral wall part 21a. In addition, it is also provided with a second L-shaped seal ring 22 with a peripheral wall part 22a contacting with the outer member 1 and a longitudinal wall part 22b and a longitudinal wall part 22b, extending inward in the radial direction almost orthogonal with the peripheral wall part 22a and the outer surface 22b2 adheres close to an inner surface 21b1 of the longitudinal wall part 21b of the first L-shaped seal ring 21 and further the inner surface 21b1 is set down to an incline being crossed with the outer surface 22b2 at the inner circumferential end. Moreover, it is constituted of installing an O-ring 23 fitted in an almost U-shaped space part 25 being surrounded by the first L-shaped seal ring 21 and the second L-shaped seal ring 22.