Well washing quality monitoring device for water injection well

The invention discloses a well washing quality monitoring device for a water injection well. The device comprises a measurement and control nipple and a monitoring main machine, wherein the measurement and control nipple comprises a main pipeline and a turbidity measurement and control branch, the main pipeline comprises a connecting pipeline, a pressure transmitter and a flow self-control instrument, wherein the pressure transmitter and the flow self-control instrument are arranged on the connecting pipeline, the turbidity measurement and control branch comprises a branch pipeline, a samplingelectric control switch valve, a pressure reducing valve and a sampling pipe, wherein the sampling electric control switch valve, the pressure reducing valve and the sampling pipe are sequentially arranged on the branch pipeline, the branch pipeline communicates with the connecting pipeline, the sampling pipe is provided with a turbidity sensor, and the pressure transmitter, the flow self-controlinstrument, the sampling