Hot-oil long-transportation pipeline multi-working-condition simulation experiment device

The invention discloses a hot-oil long-transportation pipeline multi-working-condition simulation experiment device, comprising a plurality of sets of main line simulation pump stations which are arranged in parallel. The main line simulation pump stations are connected in series through an oil delivery main pipe to form a closed loop, and the oil conveying main pipe between any two sets of main line simulation pump stations is provided with a ball collecting device and a ball serving device which are used for receiving and transmitting a pipe cleaning ball; an oil conveying main pipe betweenany two sets of main line simulation pump stations is connected with a branch main line simulation pump station for adjusting continuous or intermittent states of oil transportation through branch lines, and an inverted-V-shaped organic glass tube is arranged at the tail end of the oil conveying dry tube; and a transmitter for measuring pressure and temperature is arranged in an inlet and outlet of the main line simulatio