Plunger pump station

The invention relates to the field of pump stations, and provides a plunger pump station which comprises a reciprocating plunger pump comprising a gear box, and the first end of the gear box is provided with a first spigot; the end face of the frequency conversion all-in-one machine is provided with a second spigot, and the first spigot and the second spigot are in radial positioning fit. One end of the crowned tooth coupling is connected with a gear shaft of the gearbox, and the other end is connected with a motor shaft of the frequency conversion all-in-one machine. The problems that in the prior art, assembling and leveling are tedious, the structure is complex, and the failure rate is high are solved. According to the plunger pump station provided by the invention, radial positioning of the reciprocating plunger pump and the frequency conversion all-in-one machine is realized through the first spigot and the second spigot, so that the centering efficiency and the centering precision are improved, and the