Windows for External or Internal Hydrostatic Pressure Vessels. Part V. Conical Acrylic Windows Under Long-Term Pressure Application of 10,000 Psi

摘要

Conical acrylic windows of 30-, 60-, 90-, 120- and 150-degree included angle and 0.500 to 1.250 t/D (thickness to minor diameter ratio) have been subjected in their mounting flanges to 10,000 psi of hydrostatic pressure for 500 and 1,000 hours at ambient room temperature. The displacement of the windows through the flange mounting has been recorded as a function of time and plotted for the ready reference of the designer. The magnitude of the window displacement has been found to be a function of time, angle, temperature, t/D ratio and pressure. It is recommended that for safe single sustained operation of 1,000 hour duration at 10,000 psi hydrostatic loading at ambient temperature the windows should have an included conical angle > or = 90 degrees and a minimum t/D ratio of 0.750. For sustained loadings in excess of 1,000 hours the minimum t/D ratio of 1.000. (Author)