为解决大流量减压器在增压过程中出现的剧烈振荡问题,开展了仿真和试验研究。建立了减压器非稳态模型并开展数值计算,得到了减压器的振荡特性,该特性与试验结果基本一致。根据仿真结果提出了卸荷腔气体从入口管路引入的外置式卸荷方案。结果表明:该方案成功解决了振荡问题,减压器能够持续、稳定地增压。

Serious oscillation with the maximum amplitude of 3MPa was induced by a large-flow rate pressure relief valve (PRV) during pressurization process, which limits the application of the valve. The dynamic model of PRV was established and simulated.The simulation oscillation characteristics of PRV are consistent with that from experiment. According to simulation results, a method of pressure of unloading cavity coming from outside of the PRV is proposed to solve the oscillation problem, which is attested to be feasible by experiment.

国家自然科学基金(51076164)。