Reduced-scale experimental bench design of high-pressure blowing system of submersible

Abstract

Objectives To supply experimental platform for manufacturing of submersible high-pressure blowing system (HPBS), Methods based on isentropic blowing model of Laval spray and Bernoulli equations, mathematical modellings of high-pressure blowing and draining off had been accomplished. Method Based on similarity theory, a HPBS reduced-scale experimental bench of Strouhal and Euler similarity had been designed, including pressure vessel prototype of ballast tank and sea tank. Results Under different initial conditions, including back-pressures of 300, 200 and 100 m, flowing areas of 100%, 75%, 50%, and blowing-pressures of 25, 20, 15 MPa, the maximal pressure of the compressed air in the ballast tank had been beyond the vessel regulation pressure, and the expansion volume of the compressed air in the ballast had been above the vessel regulation cubage, Conclusions which had been proved that the experimental bench can satisfy with performance recurrences of the submersible high-pressure blowing system.