OIL-DELIVERY PLANT FOR CONTROL SYSTEM OF HYDROELECTRIC UNIT

摘要

FIELD: water power engineering. SUBSTANCE: delivery line 2 of pump 1 is provided with relief valve 3. Sucking line 4 is connected with tank 5. Hydraulic accumulator 6 is connected with inlet 7 of valve 3 through first check valve 8. Vessel 9 is connected with the gas space of hydraulic accumulator 6 through air line 10 and with tank 5 through low-pressure line 11. Vessel 9 is in communication with the outlet of valve 3. Second check valve 12 is mounted in air line 10 and inlet 16 is connected with vessel 9. Third check valve 13 is mounted in line 11 and inlet 17 is connected with tank 5. EFFECT: enhanced reliability. 1 dwg