{"id":2709,"date":"2021-06-09T02:53:05","date_gmt":"2021-06-09T02:53:05","guid":{"rendered":"https:\/\/hqeialdi5a.wpdns.site\/?p=2709"},"modified":"2024-02-01T01:38:06","modified_gmt":"2024-02-01T01:38:06","slug":"3-questions-about-hydraulic-circuit","status":"publish","type":"post","link":"https:\/\/www.yaiwo.com\/fr\/3-questions-about-hydraulic-circuit\/","title":{"rendered":"3 Best Questions About Decompression Hydraulic Circuit"},"content":{"rendered":"

<\/span>Temps de lecture estim\u00e9 : <\/span>8<\/span> minutes<\/span><\/p>\n\n\n\n

Hydraulic Circuit using a pressure-reducing valve Figure 15 allows a cylinder or stroke in the circuit to operate at a low relief valve set pressure. A pressure-reducing valve with a check valve is designed so that when the piston returns, the oil flow passes through the check valve without passing through the pressure-reducing element. Hydraulic Circuit<\/p>\n\n\n\n

\"Hydraulic
15. Circuit r\u00e9ducteur de pression utilisant un r\u00e9ducteur de pression<\/figcaption><\/figure>\n\n\n\n

1. La conception du circuit de r\u00e9duction de pression pour faire attention au probl\u00e8me<\/strong><\/h2>\n\n\n\n
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  • Leakage problem of pilot operated pressure reducing Hydraulic Circuit<\/li>\n<\/ul>\n\n\n\n

    Be aware of the pilot-operated pressure reducing valve leakage than other control valves. The leakage of this valve can be as much as 1L \/ min or more. As long as the valve is in working condition, the leakage is always present. In the choice of hydraulic pump capacity, take this into full consideration.\u00a0It should note that the minimum adjustment pressure of the pressure-reducing valve should ensure that the difference between the primary and the secondary is 0.31MPa. Hydraulic Circuit<\/p>\n\n\n\n

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    • Probl\u00e8me d'instabilit\u00e9 de pression secondaire<\/li>\n<\/ul>\n\n\n\n

      The damping hole of the main spool of the pressure reducing valve is blocked so that the oil exported from the pressure reducing valve cannot flow smoothly into the capacitive cavity between the main valve and the pilot valve. And the pilot valve also reduces the control role of the secondary pressure exported from the pressure reducing valve, resulting in unstable secondary pressure. Hydraulic Circuit<\/p>\n\n\n\n

      2. Decompression Hydraulic Circuit component setting problem<\/strong><\/h2>\n\n\n\n

      As shown in Figure 16, the pressure in the branch circuit cylinder 2 after the pressure-reducing valve 3 is lower than the fluid pressure in the master cylinder 1 branch circuit, which is called a pressure reducing circuit. The problems of this circuit are as follows. Hydraulic Circuit<\/p>\n\n\n\n

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      • When cylinder 2 is stopped for a long time, the secondary pressure after pressure reducing valve 3 gradually increases. This is because when cylinder 2 is stopped for a long time, a small amount of oil is discharged through the pilot valve through the spool gap to keep the valve in working condition. Due to the leakage in the valve, the flow through the pilot valve increases, and the secondary pressure (outlet pressure) of the pressure-reducing valve increases. To prevent this failure, you can add the oil circuit shown in the dashed line in the pressure reducing circuit, and install a safety valve at b to ensure that the pressure reducing valve outlet pressure does not exceed its adjustment Hydraulic Circuit.<\/li>\n<\/ul>\n\n\n\n
        \"1-Master
        16. 1-Ma\u00eetre-cylindre; Cylindre \u00e0 2 branches\u00a0; 3-Valve de r\u00e9duction\u00a0; 4-A papillon des gaz<\/figcaption><\/figure>\n\n\n\n