Pressure monitoring system for paste filling pipeline

The utility model discloses a pressure monitoring system for a paste filling pipeline. The pressure monitoring system comprises a well monitoring server, a main monitoring station and sub monitoring stations. The main monitoring station is provided with a data collector and an analog-digital converter; the main monitoring station is connected with the well monitoring server in an optical fiber communication manner; each sub monitoring station comprises a silicon piezoresistive pressure sensor and a transmitter; each silicon piezoresistive pressure sensor is fixed on a discharge pipe of the filling pipeline; each silicon piezoresistive pressure sensor is connected with the corresponding transmitter; each transmitter is connected with the data collector and the analog-digital converter of the main monitoring station through transmission lines. The well monitoring server is connected with one or a plurality of main monitoring stations; each main monitoring station is communicated with a plurality of sub monitoring stations; a pressure monitoring network of the downhole paste filling pipeline is formed by the pressure monitoring system of the paste filling pipeline. According to the pressure monitoring system for the paste filling pipeline, the pressure of the pipeline in the process of conveying a paste material with a large particle size can be monitored in real time, the pressure of the paste filling pipeline system is overall monitored, and the phenomena that the pipeline is blocked by paste and the paste is coagulated are prevented.