| 摘要 |
PROBLEM TO BE SOLVED: To measure movement of a flow following disk with an analog interval sensor, to electronically detect fluid flow comparing it with a desired flow using a computer, and to modify the flow if necessary. SOLUTION: Computer controlled solenoid valves 22, 25; 39, 41 act on pilot fluid pressure in a valve chamber and control openings of the valves, and thereby, passing flow is controlled. This reversely acts on flow passing through a flow detection valve 50, elevation speed is selectably varied. Lowering speed is selectably variable on largely the same principle. |
