蓄压器膜盒低温液压冲击试验研究

为在地面验证蓄压器膜盒承受低温水击压力冲击的性能,建立了一种膜盒低温液压冲击试验系统。该系统以落锤作为能量冲击源,通过能量转化实现膜盒压力变化。对液压冲击试验系统进行了阐述,介绍了试验冲击压力、低温环境等边界条件模拟方法,分析了低温液压冲击试验中的关键技术,开展了蓄压器膜盒低温液压冲击试验,并对膜盒液压冲击过程进行了研究分析。试验结果表明,采用该试验方法能够考核膜盒液氮温区液压冲击性能,最后对试验过程中存在的问题提出改进方向。

Hydraulic Impact of Accumulator at Low Temperature

In order to verify the performance of the accumulator under the impact of low temperature enduring the water hammer pressure by ground experiments, a low temperature hydraulic impact test system is established. The system is based on the drop hammer as the energy source, and the pressure of the accumulator can be changed by energy conversion. The test system of hydraulic impact experiment and the boundary condition characters, including impact pressure and low temperature are introduced, and the key technology of the low temperature hydraulic impact test is analyzed. And then, the hydraulic impact experiment of the accumulator under low temperature is carried out, and the hydraulic impact process of accumulator is analyzed. The test results show that the test method can be used to evaluate the hydraulic impact performance of the accumulator at low temperature. Finally, the problem existed in the test and the improving way are discussed.