Power End Housing for Plunger Pump and Plunger Pump Including Power End Housing

Abstract

The present disclosure provides a power end housing for a plunger pump and a plunger pump including the power end housing. The power end housing includes: an integrated crankcase, where the crankcase includes a plurality of bearing seats and supported by support vertical plates, the support vertical plates are spaced apart in an axial direction of the bearing seats, and the crankcase includes a first reinforcing rib between every two support vertical plates, wherein an angle between a direction of a maximum resultant force on the bearing seats and an axial direction of a plunger of the plunger pump is βmax, an angle between the first reinforcing rib and the axial direction of the plunger is a first angle, and the first angle is greater than or equal to 0.8 βmax and less than or equal to 1.2 βmax.

What is claimed is: 
     
         1 . A crankcase of a plunger pump, the crankcase being integrally casted and comprising:
 a first support vertical plate integrally formed with the crankcase at a first end of the crankcase along a crankshaft direction of the crankcase;
 a second support vertical plate integrally formed with the crankcase at a second end of the crankcase opposite to the first end of the crankcase; 
 a first leg structure integrally formed under the first support vertical plate and spanning from a front face to a back face of the crankcase; and 
 a second leg structure integrally formed with the second support vertical plate and spanning from the front face to the back face of the crankcase, 
 wherein the first leg structure and the second leg structure are configured to support the crankcase on a base and to be fixed to the base. 
   
     
     
         2 . The crankcase of  claim 1 , wherein the first leg structure and the second leg structure each comprise a plurality of legs distributed under the first support vertical plate and the second support vertical plate, respectively. 
     
     
         3 . The crankcase of  claim 2 , further comprising at least one additional support vertical plate integrally formed with the crankcase between the first support vertical plate and the second support vertical plate. 
     
     
         4 . The crankcase of  claim 3 , further comprising at least one additional leg structure integrally formed under the at least one additional support vertical plate and spanning from the front face to the back face of the crankcase. 
     
     
         5 . The crankcase of  claim 1 , further comprising a third leg structure and a fourth leg structure integrally formed with the crankcase and spanning from the first leg structure to the second leg structure. 
     
     
         6 . The crankcase of  claim 5 , wherein:
 the third leg structure is integrally formed under the front face and spans from the first end to the second end of the crankcase; and   the fourth leg structure is integrally formed under the back face and spans from the first end to the second end of the crankcase.   
     
     
         7 . The crankcase of  claim 6 , wherein each of the first leg structure, the second leg structure, the third leg structure, and the fourth leg structure comprise a plurality of legs distributed under the first support vertical plate, the second support vertical plate, the front face, and the back face, respectively. 
     
     
         8 . The crankcase of  claim 1 , wherein at least one bevel is arranged at a root portion of each of the first leg structure and the second leg structure. 
     
     
         9 . The crankcase of  claim 1 , wherein each of the first leg structure and the second leg structure comprises at least one weight-reducing groove. 
     
     
         10 . The crankcase of  claim 1 , wherein the first support vertical plate and the second support vertical plate are configured to support a first bearing seat and a second bearing seat, respectively. 
     
     
         11 . The crankcase of  claim 10 , further comprising at least one additional support vertical plate integrally formed with the crankcase between the first support vertical plate and the second support vertical plate. 
     
     
         12 . The crankcase of  claim 11 , further comprising a plurality of first reinforcing ribs between every two adjacent support vertical plates. 
     
     
         13 . The crankcase of  claim 11 , wherein the at least one additional support vertical plate is configured to support at least one additional bearing seat. 
     
     
         14 . The crankcase of  claim 13 , wherein the at least one additional bearing seat has a greater width than the first bearing seat and the second bearing seat. 
     
     
         15 . The crankcase of  claim 11 , wherein each of the support vertical plates comprises one or more weight-reducing grooves. 
     
     
         16 . The crankcase of  claim 11 , further comprising one or more hoisting point bosses arranged on a top portion of the support vertical plates. 
     
     
         17 . The crankcase of  claim 16 , further comprising a transition fillet arranged at a joint between each of the one or more hoisting point bosses and a case body of the crankcase. 
     
     
         18 . The crankcase of  claim 1 , wherein:
 the front face of the crankcase comprises a plurality of first threaded holes; and
 the plurality of first threaded holes are configured to connect the crankcase and a crosshead case through a plurality of bolts. 
   
     
     
         19 . The plunger pump, comprising the crankcase according to  claim 1 . 
     
     
         20 . The plunger pump according to  claim 15 , further comprising a hydraulic end housing and a crosshead case, wherein:
 the hydraulic end housing, the crosshead case, and the crankcase are sequentially connected;
 first threaded holes penetrate from the hydraulic end housing to the crankcase; and 
 first bolts connect the hydraulic end housing, the crosshead case, and the crankcase together through the first threaded holes.