| 气囊式蓄能器吸收脉动的动态特性分析 |
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| 引用本文： | 董蒙,栾希亭,梁俊龙,吴宝元.气囊式蓄能器吸收脉动的动态特性分析[J].液压与气动,2019,0(5):109-116. |
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| 作者姓名： | 董蒙 栾希亭 梁俊龙 吴宝元 |
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| 作者单位： | 1. 西安航天动力研究所， 陕西西安710100； 2. 航天推进技术研究院， 陕西西安710100 |
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| 摘 要： | 针对气囊式蓄能器吸收脉动的基础理论建模不足问题,将蓄能器进行力学模型简化,借鉴经典的质量-弹簧-阻尼系统模型,利用由参数增量表达的传递函数及流量方程,建立蓄能器气腔、液腔、进油阀及整体数学模型。在此基础上,通过编程仿真并深入分析气液腔的压力与体积对阶跃和正弦信号的动态响应特性,同时给出初始容积与预充气压力对蓄能器的影响规律。最终,为了验证蓄能器消除柱塞泵出口高压油液脉动效果,将蓄能器与柱塞泵的联合仿真结果与试验数据进行对比,两者结果基本一致,验证了模型的正确性,为蓄能器数学建模提供理论支撑。
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| 关 键 词： | 蓄能器 吸收脉动 数学模型 动态响应特性 |
| 收稿时间： | 2018-11-14 |
Dynamic Characteristics Analysis of Absorbing Pulsation for Bladder Accumulator |
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| DONG Meng,LUAN Xi-ting,LIANG Jun-long,WU Bao-yuan.Dynamic Characteristics Analysis of Absorbing Pulsation for Bladder Accumulator[J].Chinese Hydraulics & Pneumatics,2019,0(5):109-116. |
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| Authors: | DONG Meng LUAN Xi-ting LIANG Jun-long WU Bao-yuan |
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| Affiliation: | 1. Xian Aerospace Propulsion Institute, Xian, Shaanxi710100；
2. Academy of Aerospace Propulsion Technology, Xian, Shaanxi710100 |
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| Abstract: | Aiming at insufficiency of basic theoretical modeling of bladder accumulator absorbing pulsation, a mechanical model of accumulator is simplified, and a classical mass-spring-damper system model is used for reference. We establish mathematical models of the accumulator's air chamber, liquid chamber, oil inlet valve and the whole system by using the transfer function expressed by parameters increment and flow equation. Then, the dynamic response characteristics of pressure and volume of gas-liquid chamber to step and sinusoidal signals are programmed and analyzed deeply. At the same time, the influence of initial volume and pre-inflated pressure on the accumulator is given. Finally, in order to verify the effect of accumulator on eliminating high-pressure oil pulsation at the outlet of plunger pump, the combined simulation results of accumulator and plunger pump are compared with the experimental data. The results are basically consistent, which verifies the correctness of the model and provides theoretical support for mathematical modeling of accumulator. |
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| Keywords: | accumulator absorbing pulsation mathematical model dynamic response characteristics |
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