AIRCRAFT HYDRAULIC FLUID PIPE WASH DEVICE AND AIRCRAFT HYDRAULIC FLUID PIPE WASH METHOD

摘要

PROBLEM TO BE SOLVED: To provide a device for washing the supply flow passage and return flow passage of a hydraulic fluid pipe disposed in the airframe of an aircraft.SOLUTION: A wash device 10 comprises a washing agent circulation device 12; a valved connecting conduit; a connecting conduit on-off valve; and a control unit 14. Each of first and second hydraulic fluid pipes communicates with a plurality of equipment ends via a supply end and a T branch portion. The washing agent circulation device 12 includes a supply flow passage 31 for supplying a washing agent; and a return flow passage 32 for returning the washing agent. The valved connecting conduit connects an equipment end of the first hydraulic fluid pipe to an equipment end of the second hydraulic fluid pipe. The connecting conduit on-off valve is disposed halfway in the valved connecting conduit, controls a flow rate of the washing agent flowing in the valved connecting conduit on the basis of a command of the control unit 14, and simultaneously washes the first and second hydraulic fluid pipes of an aircraft.SELECTED DRAWING: Figure 18