Three plunger reciprocating pump

Abstract

The invention provides a three-plunger reciprocating pump. The three-plunger reciprocating pump comprises a pump head body, a plurality of valve group modules and a stuffing box, wherein the valve group modules are arranged on the exterior of the pump head body, each valve group module is arranged and installed at the end part of the pump head body, a plurality of valve bodies are arranged in the valve group modules, and the stuffing box is connected with the other end of the pump head body. The pump head body is provided with a liquid inlet main channel and a plurality of liquid inlet subchannels which communicate with the liquid inlet main channel. A valve group liquid inlet is formed in each valve group module. The liquid inlet subchannels communicate with the valve group liquid inlets one by one correspondingly. One end of the pump head body is further provided with a liquid discharging main channel and liquid discharge subchannels which communicate with the liquid discharging main channel. A valve group liquid discharging opening is formed in each valve group module. The liquid discharging subchannels communicate with the valve group liquid discharging openings one by one correspondingly. According to the three-plunger reciprocating pump, a runner structure of the pump head body is simplified, the machining precision is improved, and the service life of the pump head body is prolonged; and the structure of the pump is more reasonable and extremely convenient to install, use and maintain.

Description

technical field [0001] The invention relates to the technical field of reciprocating pumps for boiler power generation, in particular to a three-plunger reciprocating pump. Background technique [0002] The three-plunger reciprocating pump has the advantages of large flow, high working pressure, small flow pulsation, basically unaffected by pressure, simple structure, and convenient use. It is used in energy, petrochemical, thermal power, and other industries, especially in oil production. It is widely used in water injection process. [0003] The working principle of the three-plunger reciprocating pump is: the motor drives the large pulley on the crankshaft to decelerate and rotate by the small pulley, and converts the rotating motion into the reciprocating motion of the plunger through the crankshaft linkage mechanism. The volume of the medium cavity is alternately changed by the reciprocating movement of the plunger, and the medium is continuously and quantitatively out...

AI Technical Summary

Problems solved by technology

[0006] In order to solve this technical problem, the present invention provides a three-plunger reciprocating pump, which is used to solve the problems of poor processing technology and stress concentration in the flow channel in the prior art

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