旋转惯性液压变换器的能效特性

陈晓明; 朱玉川; 凌杰; 郑述峰; 王玉文

doi:10.13700/j.bh.1001-5965.2021.0570

旋转惯性液压变换器的能效特性

doi: 10.13700/j.bh.1001-5965.2021.0570

陈晓明¹,
朱玉川^{1, 2, ,},
凌杰^{1, 2},
郑述峰¹,
王玉文¹

1.
南京航空航天大学直升机传动技术重点实验室，南京 210016
2.
南京航空航天大学无锡研究院，无锡 214000

基金项目: 国家自然科学基金(51975275)；江苏省重点研发计划(BE2021034); 南京航空航天大学直升机传动技术重点实验室自主课题(HTL-A-20G02)

详细信息

通讯作者:
E-mail：meeyczhu@nuaa.edu.cn

中图分类号: TH137
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出版历程
- 收稿日期: 2021-09-26
- 录用日期: 2021-11-11
- 网络出版日期: 2021-12-30
- 整期出版日期: 2023-08-31

Energy-efficiency characteristic investigation of rotational inertia hydraulic converter

1.
National key Laboratory of Science and Technology on Helicopter Transmission，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
2.
Wuxi Research Institute，Nanjing University of Aeronautics and Astronautics，Wuxi 214000，China

Funds: National Natural Science Foundation of China (51975275); Primary Research & Development Plan of Jiangsu Province (BE2021034); National Key Laboratory of Science and Technology on Helicopter Transmission (Nanjing University of Aeronautics and Astronautics) (HTL-A-20G02)

More Information

Corresponding author: E-mail：meeyczhu@nuaa.edu.cn

摘要

摘要:
为探究旋转惯性液压变换器（RIHC）的主要性能及其能量转化机制，针对由等效两位三通快速切换阀驱动的旋转惯性液压变换器构型建立其理论分析模型。通过与传统比例液压系统（CHPS）对比实验，验证所建理论模型并给出两者能效差异。结果表明：所建理论模型可有效预测RIHC的主要性能，可通过系统吸油流量量化旋转惯性效应的大小，稳态吸油流量在有效占空比0.5时达到峰值。脉宽调制信号有效占空比控制模式下，随着飞轮转速、负载压力的增加，测得阀口节流损失与系统效率线性化增加。实验表明：负载压力在0~4 MPa范围内，RIHC相较于CHPS最高可减少89%的阀口节流损失，系统效率提升15.7%。
- 旋转惯性液压变换器 /
- 传统比例液压系统 /
- 吸油流量 /
- 负载压力 /
- 节流损失
Abstract:
To explore the main characteristics and energy conversion mechanism of rotational inertia hydraulic converter (RIHC). Using a rotating inertia hydraulic converter configuration powered by an analogous rapid switching valve, the overall theoretical model was developed to investigate the key features and energy conversion mechanism of the device. The results indicated that the main characteristics can be basically predicted by the theoretical model, and the rotational inertia can be effectively quantified by the suction flow rate, whose mean value reach to the peak value at the duty cycle of 0.5. In the effective duty cycle control mode of PWM signal, with the growth of the flywheel rotation speed and load pressure, the positively correlated throttling power loss and system efficiency are acquired. When the load pressure is between 0 and 4 MPa, experimental comparison showed that the RIHC may reduce throttling power loss by up to 89% and achieve an increase in system efficiency of 15.7% while compared to CPHS.
- rotational inertia hydraulic converter /
- conventional proportional hydraulic system /
- suction flow /
- load pressure /
- throttling loss

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图 1 RIHC的液压回路

Figure 1. Hydraulic circuit of RIHC

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图 2 RIHC内油液流动状态

Figure 2. Oil flow state within RIHC

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图 3 DFplus阀结构示意图

Figure 3. Diagram of DFplus valve structure

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图 4 RIHC 与CPHS 的实验液压回路

Figure 4. Experimental hydraulic circuit of RIHC and CPHS

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图 5 RIHC的吸油特性

Figure 5. Suction flow characteristics of RIHC

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图 6 RIHC的容积效率

Figure 6. Volumetric efficiency of RIHC

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图 7 RIHC的输出特性

Figure 7. Output characteristics of RIHC

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图 8 RIHC的能效特性

Figure 8. Energy-efficiency characteristics of RIHC

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图 9 CPHS的输出特性

Figure 9. Output characteristics of CPHS

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图 10 CPHS与RIHC阀口节流损失与系统效率实验对比

Figure 10. Experimental comparison of throttling loss and system efficiency of CPHS and RIHC

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表 1 DFplus阀主要参数

Table 1. Main parameters of DFplus valve

参数	数值
公称流量Q_n/ (L·min⁻¹)	25
阶跃响应/ ms	<3.5
迟滞	<0.05
频响±5%信号/ Hz	350
驱动电压V_t/ V	10

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表 2 RIHC理论模型主要参数

Table 2. Main parameters of RIHC theoretical model

参数	数值
电机转速v_p/( r·min⁻¹)	1750
液压泵排量D_p/( m³·rad⁻¹)	1.68×10⁻⁶
供油压力p_Hs/MPa	5.5
供油压力p_Ls/MPa	1.1
马达排量D_m/(m³·rad⁻¹)	2.67×10⁻⁶
阻尼系数B_m/(N·m·s·rad⁻¹)	0.0292
飞轮惯量I_m/(N·m·s²·rad⁻¹)	0.162
电磁力F_m/N	200
流量系数C_ds/C_dL	0.65
初始位置x_s0/mm	0.05
阀芯质量m_s/kg	0.1
弹簧刚度k_s/(N·m⁻¹)	20000
黏性阻尼系数b_s/(N·s·m⁻¹)	0.8
有效过流面积A_L/mm	0.785
圆孔数z	4
孔径d_n/mm	2.8
管路内径d_h/mm	12.5
空气含量γ	0.05
油液密度ρ/(kg·m⁻³)	878
油液动力黏度μ/(Pa·s)	0.04025
纯油弹性模量K/Pa	8×10⁹

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