Split-type ten-cylinder reciprocating pump

Abstract

The invention relates to a reciprocating pump, in particular to a split-type ten-cylinder reciprocating pump. The split-type ten-cylinder reciprocating pump is composed of a shell, a crankshaft, a cylindrical bearing, fluid end assemblies, a connecting rod and a medium rod. A shell upper cover is arranged on the shell. The fluid end assemblies are mounted on the two sides of the shell through dustproof shells. A suction main pipe is arranged below each fluid end assembly. The suction main pipes communicate with the corresponding fluid end assemblies. A discharge main pipe is arranged above theshell upper cover. The split-type ten-cylinder reciprocating pump is simple in structure and good in practicability, the problems that due to flow cutoff desilting and large flow fluctuation in the suction process and the large pressure pulse in the discharge process of an existing reciprocating pump, the reciprocating pump is poor in suction and discharge performance and reliability and high infailure rate are solved, and the split-type ten-cylinder reciprocating pump is especially suitable for being used for crude oil transportation, well washing, well drilling, water injection and formation fracturing operations.

Description

technical field [0001] The invention relates to a reciprocating pump, in particular to a split ten-cylinder reciprocating pump. Background technique [0002] Reciprocating pumps are widely used in the petroleum industry. For example, oil fields often need to transport liquids with high viscosity, high density and high sand content under high pressure; during oil production, they are used for crude oil transportation, well washing, drilling, and water injection. And formation fracturing, etc., but there are many problems in the field application of reciprocating pumps. Mainly: 1. Due to the certain phase angle difference between the crank throws on the circumference of the crankshaft and the action of alternating working loads (including liquid high-pressure pressure and inertial force), the alternating stress generated by the alternating loads on the gears will cause the gears to spring Plastic deformation, leading to fatigue damage; 2. Under the action of input torque, the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a simple structure, good practicability, which can effectively solve the problems of the existing reciprocating pump suction process, such as broken sand sedimentation and large flow fluctuations, and large pressure fluctuations in the discharge process, resulting in poor suction and discharge performance of the reciprocating pump. Split ten-cylinder reciprocating pump with poor reliability and high failure rate

Images