TECHNICAL FEATURES
v The Deflection structure of crankshaft and connect rod: the plunger pump crankshaft center is lower than the crosshead centerline by certain distance. The positive pressure between the crosshead and sleeve is reduced by 24% around compared to normal ones. Reduction of the crosshead-sleeve friction helps to improve the transmission efficiency and reliability.
v Install spacer frame between power end and fluid end. Ensuring that the crosshead slide hole and plunger packing are connected concentrically. Reducing wear at the crosshead and plunger packing.
v Super combined nut: For the connection between pump frame and module, therefore tightening a big nut can be decomposed into tightening a circle of small screws. Intensity of manual operation is remarkably reduced.
TECHNICAL PARAMETERS
|
Type |
QPI-2500 |
||
|
Rated input power (kW) |
1864 (2500 hp) |
||
|
Stroke length (mm) |
203.2 |
||
|
Rated stroke (r/min) |
115 |
||
|
Max. Stroke (r/min) |
330 |
||
|
Plunger diameter(inch) |
4″ |
4 1/2″ |
5″ |
|
Max. Discharge pressure (MPa) |
105.5 |
83.4 |
67.5 |
|
Max. Displacement (L/s) |
45.30 |
57.34 |
70.79 |
|
Max plunger rod load (N) |
855,505 |
||
|
Gear ratio |
6.278:1 |
||
|
Weight of single pump (kg) |
7.95 |
||
|
Plunger diameter |
The displacement and pressure under different stroke |
||||||||||||
|
115 |
150 |
200 |
250 |
300 |
330 |
||||||||
|
in |
mm |
L/s |
MPa |
L/s |
MPa |
L/s |
MPa |
L/s |
MPa |
L/s |
MPa |
L/s |
MPa |
|
4 |
101.6 |
15.79 |
105.5 |
20.59 |
81.5 |
27.46 |
61.1 |
34.32 |
48.9 |
41.19 |
40.7 |
45.30 |
37.0 |
|
4.5 |
114.3 |
19.98 |
83.4 |
26.06 |
64.4 |
34.75 |
48.3 |
43.44 |
38.6 |
52.12 |
32.2 |
57.34 |
29.3 |
|
5 |
127.0 |
24.67 |
67.5 |
32.18 |
52.1 |
42.90 |
39.1 |
53.63 |
31.3 |
64.35 |
26.1 |
70.79 |
23.7 |
Note：1.Data in the table based on the continuous operating conditions，calculated at 90% mechanical efficiency and 100% volumetric efficiency
2.Actual discharge pressure depends on the actual power and fluid end pressure limit
