Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Bidirectional protecting oil pump plunger and hot spray processing technique for surface of same

A technology of surface spraying and processing technology, applied in the direction of metal material coating technology, coating, pump components, etc., can solve the problems of reducing the normal service life of pump barrels, and achieve the goals of saving alloy powder, combining tightly, and reasonably controlling the process flow Effect

Inactive Publication Date: 2009-11-25
ANTON OILFIELD SERVICES (GRP) LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the chemical plating and other coatings on the surface of the plunger of the oil well pump in the past slow down the wear of the plunger to a certain extent and improve the corrosion resistance of the plunger, due to the increase of its own surface hardness, it will inevitably cause damage to the inside of the pump barrel. Increased surface wear reduces the normal service life of the pump barrel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bidirectional protecting oil pump plunger and hot spray processing technique for surface of same
  • Bidirectional protecting oil pump plunger and hot spray processing technique for surface of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A thermal spraying process for bidirectionally protecting the plunger surface of an oil well pump is carried out according to the following procedure:

[0016] 1. Surface pretreatment. The surface of the plunger is roughened with a 100# abrasive belt, and the surface is activated to ensure that the surface is clean and free of oil.

[0017] 2. Preheat. Remove the moisture on the surface of the plunger and increase the temperature of the surface of the plunger, increase the bonding rate of the powder, and avoid the rebound loss caused by excessive powder hitting the cold workpiece. The preheating temperature is generally around 300°C, that is, the color of the plunger surface is almost blue or just blue.

[0018] 3. Pre-spray powder. The plunger surface temperature will eventually rise to 1000°C during the spraying process. When the surface temperature gradually rises above 400°C, the surface metal will be oxidized at a high temperature. In order to prevent this phe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a bidirectional protecting oil pump plunger and a hot spray processing technique for the surface of the same. The protecting oil pump plunger comprises a long cylinder, wherein two ends of the cylinder are provided with external threads and connected with a valve cover; and the surface of the plunger is sprayed with a layer of corrosion-resistant and wear-resistant AOC alloy coating. The processing technique comprises the following steps: carrying out surface oil removal treatment on a plunger blank; burnishing and roughening the plunger blank; preheating the plunger blank for surface activation; pre-spraying alloy powder to protect the surface of the plunger from contacting air indirectly; continuously spraying till the ultimate thickness of the coating reaches 0.4 mm; heating the plunger blank after spraying for remelting of the alloy coating; and finally burnishing and polishing the plunger blank to prepare the bidirectional protecting oil pump plunger with the coating of which the thickness is more than 0.25 mm. The processing technique has simple and convenient operation, the coating is combined closely after spraying; the performance of a basal body of the plunger is not influenced during coating; and the thickness of the coating is more than 0.25 mm, and the coating can resist outside wearing and corrosion, and reduce the wearing to the inner surface of a pump cylinder of an oil well pump.

Description

technical field [0001] The invention relates to a two-way protection oil well pump plunger and a thermal spraying process on the surface of the plunger, which belongs to the field of petroleum equipment processing. Background technique [0002] Rod pump oil production of pumping unit is an artificial lifting oil production method, which is widely used in major oil fields at home and abroad for its advantages of simple equipment, low investment, convenient management and strong adaptability. The performance of rod pump oil extraction equipment plays a decisive role in the field of oil extraction. The oil well pump is an important part of it. It is lowered into the well through the oil pipe and the sucker rod and submerged at a certain depth below the liquid surface, and the oil is discharged from the ground by pumping. The oil pump is mainly composed of pump barrel, plunger, oil inlet valve and oil outlet valve. During the upstroke, the volume of the lower pump chamber belo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/14C23C4/06C23C4/02C23C4/12C23C4/08C23C4/18
Inventor 李耀辉
Owner ANTON OILFIELD SERVICES (GRP) LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com