Abstract
Water hammer wave is widely applied to test hydraulic components in various areas. A new hydraulic high-pressure impulse generator is presented in this paper in order to provide the standard water hammer wave for long-term usage. A combination of a sleeve and a rotary spool was used to build the impulse generator, and a booster piston was applied to amplify the output pressure. Mathematical models were established using commercial software, and a prototype and a test rig were built based on the simulation results. The experimental results for both single wave and repeated periods show the feasibility of the new design and indicate that the new hydraulic high-pressure impulse generator can be used for long-time impulse tests.
Highlights
The failure of hydraulic components can have serious consequences, especially when advanced hydraulic systems applied in the aeronautics and astronautics areas involve a complex system structure for meeting the strict standards of compactness [1]
Since the produced trace of the dynamic pressure impulse should be mandatorily confined within the shaded area shown in Figure 1 [8], the development of the pressure impulse generator is increasingly important for achieving an acceptable hydraulic pressure impulse output
It is hard to guarantee that the sevro/proportional paragraph, these groups attempted to extend the lifetime of the pressure impulse valve would have a longer life time than the tested hydraulic component when a closetor reduce theismanufacturing cost.aFor instance, is hard to guarantee loopand feedback system applied for generating million pressureitimpulse waves in a sevro/proportional would a longer life time than the tested reliability test; further, valve there exists the have concern of the potential high expenditure of hydraulic the valve
Summary
The failure of hydraulic components can have serious consequences, especially when advanced hydraulic systems applied in the aeronautics and astronautics areas involve a complex system structure for meeting the strict standards of compactness [1]. Man et al designed a the p hydraulic-impulse-testing second-stage valve and used hydraulic-impulse-testing system with a second-stage servo valve and used the pressure difference feedback signal to achieve accurate output control [12]. It is hard to guarantee that the sevro/proportional paragraph, these groups attempted to extend the lifetime of the pressure impulse valve would have a longer life time than the tested hydraulic component when a closetor reduce theismanufacturing cost.aFor instance, is hard to guarantee loopand feedback system applied for generating million pressureitimpulse waves in a sevro/proportional would a longer life time than the tested reliability test; further, valve there exists the have concern of the potential high expenditure of hydraulic the valve. The main part the generator contains a rotary valvelife to produce the perfo required pressure impulse wave by successively connecting different pressure sources and these features will can help establish an open-loop system that generates the r a pressure-boost cylinder to increase pressure impulse signals [18]. A prototype was manufactu assembled for testing its feasibility
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