Linear motor multi-cylinder reciprocating pump with coupled gear and rack

A linear motor, rack and pinion technology, applied in the direction of pumps, piston pumps, mechanical equipment, etc., can solve the problems of high working temperature, motor failure, and high running speed of the motor mover, and achieve small fluctuations in pump pressure and displacement, and realize Large displacement, high pump pressure and reduced motor loss

Inactive Publication Date: 2010-03-17
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the above-mentioned patents, each linear motor directly drives one or two pistons. During the positive and negative strokes, the motor must be energized. The continuous power-on time of the linear motor is 100%. Fault; when only one piston is driven, the reve

Method used

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  • Linear motor multi-cylinder reciprocating pump with coupled gear and rack
  • Linear motor multi-cylinder reciprocating pump with coupled gear and rack

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[0013] Further illustrate the present invention below in conjunction with accompanying drawing.

[0014] exist figure 1 , figure 2 Among them, the linear motor multi-cylinder reciprocating pump coupled with rack and pinion of the present invention mainly consists of linear motors (1, 15), shaft couplings (2, 19), piston rods (3, 13), working fluid cylinders (4, 10 ), piston (5, 11), discharge valve (6, 9), suction valve (7, 8), gear 12, driver 16, data acquisition card 17, control computer 18 and other components. Linear motors (1, 15) and piston rods (3, 13) are arranged parallel to each other; the piston rods (3, 13) are equipped with racks, and a gear 12 is used to connect the teeth on the two piston rods (3, 13). The bars are engaged at the same time, and the two piston rods are arranged with a movement phase difference of 180°.

[0015] Alternate energization scheme for two motors in a basic unit:

[0016] exist figure 1 Among them, when the linear motor 1 is in the...

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Abstract

The invention relates to a linear motor reciprocating pump with coupled gear and rack, which mainly consists of a linear motor, a coupler, working hydraulic cylinders, a piston, a piston rod, a gear,a suction valve, a discharge valve, a data collection card, a control computer, a driver, etc. Two cylinders with one coupled gear and rack form an elementary unit; and a multi-cylinder reciprocatingpump with double cylinders, four cylinders and cylinders of even number of more than four can be formed. Two linear motors in one elementary unit can be electrified at respective positive strokes thereof, and can be interrupted at the reverse strokes, and also can be electrified synchronously both at the positive strokes and the reverse strokes. One elementary unit is provided with only one position detection sensor to detect the displacement signal of the motor, and the displacement signal is collected by the data collection card, transferred, and input into the control computer; after the displacement signal is analyzed, a control signal is sent to the driver to lead the motor to realize a desired motion rule. The linear motor reciprocating pump with coupled gear and rack has the advantages of good suction performance, high system efficiency, large discharge capacity, high pump pressure as well as small fluctuation of pump pressure and discharge volume; moreover, the linear motor reciprocating-pump with coupled gear and rack can better fulfill the productive requirements of petroleum, chemical engineering, etc.

Description

technical field [0001] The invention relates to a linear motor multi-cylinder reciprocating pump with rack and pinion coupling used in chemical industry, mining, petroleum and other industries. Background technique [0002] At present, reciprocating pumps are widely used at home and abroad. They are mainly composed of gear transmission, crankshaft, connecting rod and piston. The suction performance is poor, and it is difficult to meet the requirements of modern drilling technology, acid fracturing technology and water injection production technology. In order to achieve low stroke times, large displacement and high pump pressure, the existing reciprocating pump must adopt a larger transmission ratio and a longer stroke, the transmission system is more complicated, the system efficiency is lower, and the structural size of the pump is larger, especially The more cylinders of the reciprocating pump, the more complex the system, the more difficult it is to manufacture, the hig...

Claims

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Application Information

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IPC IPC(8): F04B9/113
Inventor 侯勇俊张智亮
Owner SOUTHWEST PETROLEUM UNIV
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