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| Performance analysis and test on on-off response of DC hydraulic solenoid valve |
| DENG Zhihui1,2, ZHANG Xiliang1* |
| 1.School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.School of Mechanical and Electrical Engineering, Changzhou College of Information Technology, Changzhou, Jiangsu 213164, China |
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Abstract In order to obtain the main factors affecting the on-off response performance of the DC hydraulic solenoid valve and their specific relationship. Taking the K-01-D12 type DC hydraulic solenoid valve as an example, on the basis of analyzing its structure and working principle, the theoretical analysis of its on-off characteristics were carried out. The kinematic model of armature was established from the aspects of electromagnetic force, spring force, friction force, hydraulic oil resistance and so on. Designing the hydraulic solenoid valve performance testing platform with industrial control computer as upper computer and single chip computer as lower computer, and the model was partly verified by experiments. The theoretical analysis and the experimental results show that the on-off response performance of DC hydraulic solenoid valve is closely related to the temperature of hydraulic oil, the stubbornness coefficient of reset spring, etc. The higher the oil temperature, the lower the viscous damping coefficient of hydraulic oil, the faster the on-off response time, however, the excessive temperature can easily lead to the leakage and affect the efficiency. The greater the reset spring stubbornness coefficient, the slower the opening time and the faster the closing time on single cavity operation, but the less effect on the direct switching between the two cavities of solenoid valve.
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Received: 31 May 2018
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