Multi-point-support five-cylinder plunger pump

Abstract

The invention discloses a multi-point-support five-cylinder plunger pump. The multi-point-support five-cylinder plunger pump comprises a power end assembly, a hydraulic end assembly and a speed reduction box assembly, wherein the power end assembly comprises a crankshaft box body, a crosshead box body and a space rack, and the crankshaft box body, the crosshead box body and the space rack are connected in sequence; the hydraulic end assembly is fixed on the space rack, the speed reduction box assembly is fixed to the crankshaft box body, the bottom of the crankshaft box body is provided with acrankshaft supporting body, and the crankshaft supporting body is used for supporting the crankshaft supporting box body; the bottom of the crosshead box body is provided with a crosshead supportingbody, the crosshead supporting body is used for supporting the crosshead box body, the bottom of the space rack is provided with a hydraulic supporting body, and the hydraulic supporting body is usedfor supporting the hydraulic end assembly. The multi-point-support five-cylinder plunger pump has the advantages that through the multi-point-support design on the crankshaft box body, the crosshead box body and the hydraulic end assembly, the support strength of the plunger pump can be improved, vibration is reduced, high-load work is better guaranteed, and the plunger pump runs more stably.

Description

technical field [0001] The invention relates to the technical field of plunger pumps, in particular to a multi-point supported five-cylinder plunger pump. Background technique [0002] With the further development of unconventional oil and gas and shale oil and gas, the pressure and displacement requirements of fracturing operations are constantly increasing. The volume is also getting higher and higher, which makes the scale of fracturing construction larger and larger, and the harsh operating conditions also put forward higher requirements for fracturing equipment, especially for plunger pumps. At present, in the process of shale oil and gas development, the operating pressure generally reaches 80-90MPa or even higher, and the single-stage operating displacement is generally 1800m 3 -2000m 3 Even above, the plunger pump must not only be able to meet the continuous operation of high pressure and large displacement, but also ensure the quality stability under continuous hi...

AI Technical Summary

Problems solved by technology

At present, the most widely used fracturing truck on the market is the 2500 fracturing truck, which is equipped with a 2800hp plunger pump. Other commonly used fracturing pump types include 2500hp pumps, 3300hp pumps, and 4000hp pumps. Taking the 2800hp pump as an example, due to power limitations , the single-pump displacement is low in high-pressure operation, and a single-stage displacement requirement is 14-16m 3 In a shale gas well site per minute, a total of nearly 20 fracturing trucks are required to operate at the same time to meet the total displacement requirements of the fracturing operation, which will occupy a large well site area and increase the narrow oil and gas field well site equipment Difficulties in layout. In addition, conventional plunger pumps are faced with increasingly harsh operating conditions, and they are in high-load operations for a long time. The frequency of problems is also increasing, which increases the cost of maintenance and repair.

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