Multi-point supported five cylinder plunger pump

Abstract

The present invention discloses a multi-point supported five cylinder plunger pump, including a power end assembly, a hydraulic end assembly and a reduction gearbox assembly, the power end assembly includes a crankcase, a crosshead case and a spacer frame, the crankcase, the crosshead case and the spacer frame are connected in sequence, the hydraulic end assembly is fixed on the spacer frame, the reduction gearbox assembly is fixed on the crankcase, a crankshaft support is disposed at the bottom of the crankcase, and the crankshaft support is used to support the crankcase, a crosshead support is disposed at the bottom of the crosshead case, and the crosshead support is used to support the crosshead case, a hydraulic support is disposed at the bottom of the spacer frame, and the hydraulic support is used to support the hydraulic end assembly. Beneficial effects: the multi-point support design of the crankcase, the crosshead case and the hydraulic end assembly can enhance the support strength of the plunger pump and reduce the vibration, thus better ensuring high load operation and more smoothly running.

1 . A multi-point supported quintuplex plunger pump, including a power end assembly, a hydraulic end assembly and a reduction gearbox assembly; the power end assembly comprises a crankcase, a crosshead case and a spacer frame; the crankcase, the crosshead case and the spacer frame are connected in sequence; the hydraulic end assembly is fixed on the spacer frame; the reduction gearbox assembly is fixed on the crankcase; a crankshaft support is disposed at the bottom of the crankcase, and the crankshaft support is used to support the crankcase; a crosshead support is disposed at the bottom of the crosshead case, and the crosshead support is used to support the crosshead case; a hydraulic support is disposed at the bottom of the spacer frame, and the hydraulic support is used to support the hydraulic end assembly, wherein cylinder spacing of the quintuplex plunger pump is 13-14 inches, and there are two slide rails fixed on the support plate within the power end housing, the two slide rails form a semi-circular space, in which a crosshead is mounted for reciprocating linear motion. 
     
     
         2 . The multi-point supported quintuplex plunger pump according to  claim 1 , wherein the crankcase and the crosshead case are integrally welded to constitute a power end housing which is connected to the spacer frame; the power end housing comprises six vertical plates, six bearing seats, a front end plate, a back cover plate, a base plate, a support plate and an upper cover plate; each vertical plate is connected to a corresponding bearing seat, and the six vertical plates are arranged in parallel to constitute a power end chamber; the base plate is mounted at the bottom of the power end chamber, the upper cover plate is mounted on the top of the power end chamber; the front end plate is mounted at the front end of the power end chamber; the back cover plate is mounted at the back end of the power end chamber, and the support plate is disposed between two adjacent vertical plates arranged in parallel. 
     
     
         3 . The multi-point supported quintuplex plunger pump according to  claim 1 , wherein a crosshead assembly is provided within the crosshead case, a connecting rod assembly is provided between the crankcase and the crosshead case, and a crankshaft is provided within the crankcase; one end of the connecting rod assembly is connected to the crankshaft through a connecting rod bearing bush, and the other end of the connecting rod assembly is connected to the crosshead assembly through a crosshead bearing bush; the connecting rod bearing bush and the crosshead bearing bush are both alloy coated steel backing bearing bushes. 
     
     
         4 . (canceled) 
     
     
         5 . (canceled)