Fracturing pump driven by linear motors

A technology of linear motor and fracturing pump, applied in the field of fracturing pump, can solve the problems of low stroke number, large displacement, uneven output flow, complex structure of fracturing pump, etc., so as to improve reliability and transmission. Efficiency, improve transfer efficiency, reduce vibration and the effect of consumption of consumables at the hydraulic end

Active Publication Date: 2020-09-11
SICHUAN HONGHUA PETROLEUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of complex structure, low reliability, uneven output flow, large pressure fluctuation, and limited stroke of the conventional fracturing pump due to the existence of the crankshaft and connecting rod mechanism. To solve the problem of demand, provide a fracturing pump driven by a linear motor. The linear motor is directly connected to the plunger, and the linear motor drives the plunger to perform reciprocating linear motion. Displacement requirements, to solve a series of problems of conventional fracturing pumps

Method used

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  • Fracturing pump driven by linear motors
  • Fracturing pump driven by linear motors

Examples

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Effect test

Embodiment 1

[0025] This embodiment provides a fracturing pump driven by a linear motor;

[0026] Such as figure 1 and figure 2 As shown, the fracturing pump driven by a linear motor in this embodiment includes at least one hydraulic end 1, and one end of each hydraulic end 1 is provided with several plungers 4 side by side, and each of the plunger 4 Correspondingly connected to a linear motor 3, all the linear motors 3 are arranged side by side corresponding to the plunger 4, the linear motor 3 drives the plunger 4 to perform reciprocating linear motion, and the other end of the liquid end 1 is also provided with several control valves 5. The control valve 5 is used to control the suction or discharge of liquid when the plunger 4 moves.

[0027] The present invention directly connects the linear motor to the plunger, drives the plunger to perform reciprocating linear motion through the linear motor, saves components such as the crankshaft and connecting rod mechanism in the conventiona...

Embodiment 2

[0035] The difference between this embodiment and Embodiment 1 is that each plunger corresponds to one buffer device, that is, the buffer device is processed into an independent small body.

Embodiment 3

[0037] The difference between this embodiment and Embodiment 1 or Embodiment 2 is that the number of the plunger 4 on the liquid end 1 is three or seven, and the number of the linear motor 3 is three or seven. seven.

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Abstract

The invention discloses a fracturing pump driven by linear motors. The fracturing pump driven by linear motors comprises one or more fluid ends, wherein a plurality of plungers are arranged on each fluid end side by side, each plunger is correspondingly connected with one linear motor, and each linear motor drives the corresponding plunger to do reciprocating rectilinear motion; and each fluid endis also provided with a plurality of control valves, and the control valves are used for controlling sucking or draining of liquid during motion of the plungers. Each linear motor is directly connected with the corresponding plunger, each linear motor drives the corresponding plunger to do reciprocating rectilinear motion, and components of crankshaft-connecting rod mechanisms and the like in a conventional fracturing pump are omitted, so that the structure of the fracturing pump is simplified, and the reliability and the transmission efficiency of the fracturing pump are effectively improved. Besides, the linear motors operate smoothly and are constant in speed, and output flow and pulsation of pressure are theoretically and basically eliminated; besides, the stroke of the linear motorscan be long, so that requirements for low strokes per minute and large displacement are met, and vibration of the whole pump and consumption of wearing parts of the fluid ends are reduced.

Description

technical field [0001] The invention relates to the technical field of fracturing pumps, in particular to a fracturing pump driven by a linear motor. Background technique [0002] The job of the frac pump is to convert low-pressure fluid into high-pressure fluid. A conventional fracturing pump is mainly composed of a power end and a hydraulic end. The prime mover drives the crankshaft to rotate through the reduction gear, and then drives the plunger to reciprocate linearly through the conduction of the crank linkage mechanism, so as to realize the suction and discharge of liquid. Due to the existence of mechanical structures such as reduction gearboxes and crankshaft linkages, conventional fracturing pumps have high noise and low reliability during operation. At the same time, the crankshaft linkages have inherent disadvantages of uneven output flow and large pressure fluctuations. In addition, the crank linkage mechanism of conventional fracturing pumps limits the stroke. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B17/03F04B1/00F04B53/10H02K7/00
CPCF04B1/00F04B17/03F04B53/10H02K7/00
Inventor 谢梅英唐平罗权程建
Owner SICHUAN HONGHUA PETROLEUM EQUIP
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