Wellhead liquid injection construction parameter intelligent monitoring system

The invention discloses an intelligent monitoring system for wellhead liquid injection construction parameters, relates to the field of water shutoff and profile control processes and matched technologies of petroleum engineering, solves the problems that operation data cannot be mastered dynamically in real time and the safety risk of a high-pressure area of construction operation is large, and comprises a monitoring nipple and a secondary instrument box which are communicated with the upper end of a liquid injection pipeline and the lower end of a liquid storage tank. A temperature transmitter, a pressure transmitter, a storage battery pack, a 4G-RTU remote terminal unit, a data acquisition processor and an ultrasonic flow transmitter are installed in the secondary instrument box, an ultrasonic receiving probe, an ultrasonic transmitting probe, a temperature sensor and a pressure sensor are installed on the monitoring nipple, and the monitoring nipple is connected with the secondary instrument box through a