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Sucker rod continuous full coating production line and coating method thereof

A sucker rod, full-coating technology, applied in the direction of coating, etc., can solve the problems of sucker rod scratches, complex mold structure, affecting service life, etc., to achieve increased wear resistance, good coating effect, and enhanced precision Effect

Active Publication Date: 2022-02-11
TIANJIN HAOHANG COMPOSITE PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some sucker rods have special-shaped surfaces and different cross-sectional sizes, and the structure of the mold used for coating is complex, so it is impossible to fully cover the sucker rod, which affects the coating efficiency and performance of the sucker rod
[0003] The applicant cooperated with a university in the early stage to develop a continuous full-coating equipment for sucker rods and its coating method. The application number is: 201610203743.8. Also independently applied for an invention patent and obtained authorization. The patent name is: A production equipment for continuously coating ultra-high molecular weight polyethylene on sucker rods. The patent number is: 201410246023.0. Unified problems, but there are still some problems that have not been resolved, including: 1. It can only cover one type of sucker rod diameter, the minimum diameter of the sucker rod is φ22mm, the total length is 8m, and the maximum diameter is φ41.3mm; 2. .The coating is not rigorous, which seriously affects the service life in the later period; 3. The coating layer coated with high molecular weight polyethylene coating material is still worn after a period of use, and the corrosion resistance is poor
4. During coating, the exhaust gas produced by heating high molecular weight polyethylene pollutes the environment; 5. During the coating process, after the sucker rod comes out of the coating module, due to incomplete cooling, and the transmission wheel set pumps oil during the transportation process The friction of the rod, so there will be scratches on the sucker rod

Method used

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  • Sucker rod continuous full coating production line and coating method thereof
  • Sucker rod continuous full coating production line and coating method thereof
  • Sucker rod continuous full coating production line and coating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0155] Cover one sucker rod with a total length of 8.5m, the diameter of the sucker rod is φ19.05mm, and the width of the wrench square is φ25.40mm;

[0156] Before work, 3 steps are required, namely:

[0157] 1. Adjust the height of the production line according to the diameter of the sucker rod 24 to be coated, so that all the tooling used to support the sucker rod 24 equipment is on a straight line, specifically:

[0158] ①The sucker rod 24 is placed in the concave part of the roller I1-2, and then the sucker rod 24 is pushed into the induction coil 2-1 of the intermediate frequency heating device 2, and the intermediate frequency heating is further adjusted by twisting the screw nut II22 and the bolt III23 The height of the device 2 further enables the sucker rod 24 to pass through the center of the induction coil 2-1;

[0159] ②The sucker rod penetrates into the positioning cavity 8-6 from the inlet port 8-4 on the positioning device 8, and then the upper nitrogen cylind...

Embodiment 2

[0178] Cover 5 single sucker rods with a total length of 8.5m, the diameter of the sucker rod is φ19.05mm, the total length is 8.5m, and the width of the wrench square is φ25.40mm; The buckle 24-1 is threadedly connected with the female buckle 24-2, so that a plurality of the sucker rods 24 are connected into a line; most of the parameters set during the coating of the embodiment 1 are continued, and since one sucker rod 24 has two joints, and 5 joints are covered in series when covering, so the terminal controller is set to cover the small diameter of the sucker rod with the normal amount of covering material when the first second section of the first sucker rod is detected part, when detecting the second second section of the first sucker rod, increase the amount of coating material, and when detecting the first second section of the second sucker rod, use the normal amount of coating material to cover the pumping rod. The small diameter part of the oil rod, and so on..., th...

Embodiment 3

[0189] After being coated with different coating materials, the inspection is carried out. The inspection results are as follows:

[0190]

[0191]

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Abstract

The invention relates to the field of sucker rods, and provides a continuous full-coating production line for sucker rods and a coating method thereof. Module, air cooling device, water cooling device, rear traction device; between intermediate frequency heating device and front traction device, between front traction device and cladding module, between air cooling device and water cooling device, between water cooling device and rear traction device All are equipped with a positioning device; a distance sensor is installed between the intermediate frequency heating device and the positioning device, and the terminal controller is fixed on the front traction device to control the entire line; the coating module includes a coating unit and a coating material supply unit; the fixed platform There are 4 sets of transmission devices on the II, between the water cooling device and the rear traction device; beneficial effects: the present invention can adapt to the coating of sucker rods with different diameters, the thickness of the coating can be adjusted, and the resistance of the coated sucker rods Good corrosion resistance and wear resistance.

Description

technical field [0001] The invention relates to the field of sucker rods, in particular to a continuous full-coating production line for sucker rods and a coating method thereof. Background technique [0002] In the field of sucker rods, the mechanical properties of steel sucker rods are excellent, but the metal's wear resistance and corrosion resistance are low, and it cannot cope with the harsh environment of wells and mines. As a result, the service life of sucker rods is greatly shortened, which affects the safety of oil fields. normal production. In order to solve the corrosion and wear problems of the sucker rod, the surface of the sucker rod will be coated with wear-resistant and corrosion-resistant materials to increase the wear resistance and corrosion resistance of the sucker rod and prolong its service life. However, some sucker rods have special-shaped surfaces and different cross-sectional sizes, and the structure of the mold used for coating is complex, so it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C48/025B29C48/151B29C48/92B29C48/79B29C48/793B29C48/797B29C48/285B29C48/27B29C48/88C08L23/06C08K13/04C08K7/20C08K5/098C08K3/04
CPCB29C48/025B29C48/151B29C48/92B29C48/79B29C48/793B29C48/797B29C48/285B29C48/27B29C48/88C08L23/06B29C2948/92C08L2207/068C08L2205/025C08K13/04C08K7/20C08K5/098C08K3/04
Inventor 刘建兴
Owner TIANJIN HAOHANG COMPOSITE PIPE
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