Multi-stage centrifugal pump axial force online detection device with balance disc protection device

The utility model provides a multistage centrifugal pump axial force on-line detection device with a balance disc protection device, which is characterized in that the left end and the right end of a pump shaft (1) are respectively arranged in bearing inner holes in a bearing body A (3) and a bearing body B (12); a water inlet section (5), a plurality of overflowing assemblies and a water outlet section (9) are sequentially installed in the middle of the first bearing body (3) and the second bearing body (12) from left to right, each overflowing assembly is composed of an impeller (6), a radial guide vane (7) and a middle section (8), an axial force balance structure (10) is installed on the right side of an inner hole of the water outlet section (9), and a balance disc protection device (13) is installed on the end face of the right side of the second bearing body (12) and located at the rightmost end of the pump shaft (1). And the input end of the axial force measurement and display system (141) is connecte