Pipeline pressure measuring device and measuring method

The invention relates to the technical field of engineering supervision, in particular to a pipeline pressure measuring device which comprises a measuring pipe section, a fixed sleeve fixed in the measuring pipe section and coaxially arranged with the measuring pipe section and a pressure measuring mechanism fixed in the fixed sleeve. One end, close to the measuring assembly, of the fixed sleeve is opened; the end, close to the display assembly, of the fixed sleeve is closed; the pressure measuring mechanism comprises a measuring assembly arranged in the fixed sleeve in a sliding mode and a display assembly arranged at the end, away from the measuring assembly, of the fixed sleeve; and the display assembly is driven by the measuring assembly to display pressure data. The pipeline pressure measuring device has the following effects that the measuring assembly slides in the fixed sleeve under the driving of fluid in a pipeline network, and the display assembly displays pressure data through the driving of the m