Hydraulic process based on water-injection pump hydraulic system

A technology of hydraulic system and water injection pump, which is applied in the directions of fluid pressure actuating system components, fluid pressure actuating devices, mechanical equipment, etc. Harsh and other problems, to achieve the effect of adjustable displacement, long life and simple structure

Inactive Publication Date: 2014-04-09
梁波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the harsh working conditions of reciprocating pumps used in petroleum engineering, there are generally problems of short service life of wearing parts and low efficiency during normal operation.
[0003] The seals of booster water injection pumps are easily damaged, and the one-time pump stop accident accounts for about 90% of reciprocating booster water injection pumps. In addition, there are other vulnerable parts that have low efficiency during normal operation of the pump due to life problems.

Method used

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  • Hydraulic process based on water-injection pump hydraulic system

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Embodiment

[0021] Such as figure 1 As shown, the hydraulic system used in the present invention includes a pump cylinder, a coupler connected with the pump cylinder, and a hydraulic cylinder connected with the coupler; the hydraulic cylinder is connected with a constant power variable pump, and the constant power variable pump is connected with a quantitative pump and An oil filter; the hydraulic cylinder is also connected with an accumulator and an oil filter; the constant power variable pump is provided with an overflow valve; the constant power variable pump is provided with a three-position four-way hydraulic control reversing valve.

[0022] figure 1 The solid line in the middle indicates the main oil circuit; the dotted line indicates the control oil circuit; the small flow pump and the accumulator 3 form an automatic replenishment circuit; the one-way throttle valve at both ends of the reversing valve controls the reversing time; the accumulators 1 and 2 act as auxiliary The powe...

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Abstract

The invention discloses a hydraulic process based on a water-injection pump hydraulic system. The process includes: a, a hydraulic reversing valve is on the left, a piston of a left hydraulic cylinder is at a certain position of the middle upper end, and a rod-end plunger of a right hydraulic cylinder is at a certain position of the middle; b, the piston continues moving down, and oil in a cavity is discharged through an internal hydraulically-controlled one-way valve; c, the one-way valve enters right-end space of a spool of the reversing valve and pushes the spool to move leftwards; d, main pump oil continuously pushes the piston to move down, meanwhile, the main pump oil enters upper cavities of the hydraulic cylinders and starts to push the piston to move down; e, the hydraulic cylinders start to discharge liquid at uniform speed and arrives the bottommost end; f, the oil pushes the piston of the left hydraulic cylinder to move down, then pushes the piston to move up, and pushes the oil in the upper cavities to flow back into an oil tank. The hydraulic process has the advantages of high pressure, high flow, simple structure, high efficiency, energy saving, long service life, displacement adjustability, ease of maintenance and operation, reversing accuracy and reliability, and capability of boosting.

Description

technical field [0001] The invention relates to a hydraulic process based on a water injection pump hydraulic system Background technique [0002] The development of the petroleum industry has put forward higher requirements for reciprocating pumps. On the one hand, the pressure and power of the pump are getting higher and higher, while the manufacturing and maintenance costs should be low, and the volume and quality should not be too large. In addition, because the working conditions of reciprocating pumps used in petroleum engineering are very harsh, there are generally problems of short service life of wearing parts and low efficiency during normal operation. [0003] The seals of booster water injection pumps are easily damaged, and one-time pump shutdown accidents account for about 90% of reciprocating booster water injection pumps. In addition, there are other vulnerable parts that have low efficiency during normal operation of the pump due to life issues. [0004] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/00
Inventor 梁波
Owner 梁波
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