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CN-121972347-A - Sucker rod anticorrosive coating spraying device

CN121972347ACN 121972347 ACN121972347 ACN 121972347ACN-121972347-A

Abstract

The invention relates to the technical field of sucker rod production and discloses a sucker rod anti-corrosion layer spraying device which comprises an air cylinder, wherein gaps surround a sucker rod and are used for the sucker rod to pass through, two side walls of the air cylinder are symmetrically provided with thermal spraying gun heads for spraying the sucker rod in a penetrating way, the upper wall and the lower wall of the air cylinder are respectively provided with an air flow output assembly in a penetrating way, the air flow output assemblies comprise a first air inlet pipe penetrating through the wall of the air cylinder and an air distribution box connected with the inner end of the first air inlet pipe, the air outlet direction of the air distribution box is vertical and corresponds to the two sides of the sucker rod, the air flow output assemblies are provided with four groups, the four groups of air flow output assemblies are vertically symmetrical, and the air flow output assemblies output air flow to enable moving paths of thermal spraying materials at the upper end and the lower end to be respectively attached to the upper side and the lower side of the sucker rod in a bending way along the sucker rod direction.

Inventors

  • YANG KUN
  • LI YANPING
  • LI ZHEN
  • YANG JING
  • JIANG YUKUN
  • DU SHANSHAN
  • XU LEILEI

Assignees

  • 济源市石油机械有限公司

Dates

Publication Date
20260505
Application Date
20260227

Claims (10)

  1. 1. The utility model provides a sucker rod anticorrosive coating spraying device, its characterized in that includes that the clearance encircles the sucker rod and supplies dryer (1) that the sucker rod passed, dryer (1) both sides wall symmetry wears to be equipped with thermal spraying rifle head (2) to the sucker rod spraying, dryer (1) upper and lower wall all wears to be equipped with air current output assembly, air current output assembly is including first air-supply line (4) and the cloth bellows (3) of connection and first air-supply line (4) inner of passing dryer (1) wall, cloth bellows (3) air-out direction is vertical and correspond the sucker rod both sides, air current output assembly sets up four groups, four groups air current output assembly up-and-down symmetry, thermal spraying rifle head (2) horizontal blowout's thermal spraying material vertical span is greater than the sucker rod diameter, air current output assembly output air current makes the hot spraying material's of upper and lower extreme removal route buckle respectively in sucker rod upper and lower side along the direction bending.
  2. 2. The sucker rod anticorrosive coating spraying device according to claim 1, wherein the air duct (1) is of a sandwich structure with an outer wall and an inner wall, a gap is formed between the outer wall and the inner wall, the outer wall is connected with a second air inlet pipe (5), a plurality of air outlet holes (6) are uniformly distributed on the inner wall, and air flow output by the air outlet holes (6) forms air flow towards the center of the air duct (1) on the inner side of the inner wall.
  3. 3. The sucker rod anticorrosive coating spraying device according to claim 2, wherein the diameters of the two ends of the air duct (1) are gradually reduced to form a conical part, the lower end of the inner wall is provided with a groove (7) extending towards the outer wall, the air outlet hole (6) is not formed at the groove (7), and the groove (7) extends to the conical part.
  4. 4. A sucker rod anti-corrosion coating spraying device according to claim 3, wherein both ends of the air duct (1) are connected with extension cylinders (8).
  5. 5. A sucker rod anti-corrosion coating spraying device according to claim 3, characterized in that a heating plate (9) is arranged on the inner side of the groove (7), a discharge pipe (10) is connected to the lower side of the middle part of the groove (7), the discharge pipe (10) extends to the outside of the lower side of the outer wall, and a spiral heating body (11) is arranged outside the discharge pipe (10).
  6. 6. The sucker rod anticorrosive coating spraying device according to claim 5, characterized in that the lower side of the discharge pipe (10) is connected with an extrusion barrel (12), a plunger (13) which moves reciprocally is arranged in the extrusion barrel (12), a die pipe (15) for outputting metal wires is arranged at one end of the extrusion barrel (12), and the plunger (13) moves reciprocally to extract molten metal in the discharge pipe (10) and press the molten metal into the die pipe (15).
  7. 7. The sucker rod anticorrosive coating spraying device according to claim 6, wherein a cooling fan (19) is arranged on one side of the metal wire output by the die pipe (15), and a winding component for winding the metal wire is arranged below the cooling fan (19).
  8. 8. The sucker rod anticorrosive coating spraying device according to claim 6, characterized in that a circulation groove (16) is arranged on the upper side of the plunger (13), the circulation groove (16) extends to the side of the plunger (13) facing the die pipe (15), and a baffle (17) for shielding a notch on the side of the circulation groove (16) is hinged to the side of the plunger (13) facing the die pipe (15).
  9. 9. The sucker rod anticorrosive coating spraying device according to claim 1, wherein groove bodies (22) are arranged on the outer sides of two ends of the air duct (1), a plurality of idler wheels (23) for supporting sucker rods are arranged on the inner sides of the groove bodies (22), and annular grooves with V-shaped sections are arranged on the outer sides of the idler wheels (23).
  10. 10. The sucker rod anti-corrosion layer spraying device according to claim 9, wherein the rollers (23) are provided with a plurality of groups of three rollers, each group of three rollers (23) are respectively positioned on the left side and the right side of the sucker rod, the distance between the adjacent rollers (23) is larger than the joint length of the sucker rod, an elastic telescopic rod is connected between each roller (23) and the groove body (22), and the elastic telescopic rod corresponds to the radial direction of the sucker rod.

Description

Sucker rod anticorrosive coating spraying device Technical Field The invention relates to the technical field of sucker rod production, in particular to a sucker rod anti-corrosion layer spraying device. Background The sucker rod is a vital force transmission component in a sucker rod pumping system for oil exploitation, is mainly used for connecting a walking beam of a ground pumping unit with an underground oil pump and realizing lifting operation of underground crude oil by transmitting reciprocating motion of the ground, is generally in a slender round rod shape, comprises a rod body, a coupling and a thread section, is made of common medium carbon alloy steel, and can be made of stainless steel materials or be subjected to surface treatment such as chromium plating, corrosion prevention coating and the like under the condition of serious corrosion, and in the working process, the sucker rod is required to bear alternating tension and compression and bending loads, can be subjected to corrosion of underground crude oil and stratum water and the eccentric wear action of the underground crude oil and the stratum water and oil pipe, so that the sucker rod has severe requirements on strength, toughness, fatigue resistance and corrosion resistance. The core principle of the corrosion-resistant spraying technology is that a compact corrosion-resistant coating is formed on the metal surface of the sucker rod through various spraying processes, a physical isolation barrier is constructed, and the contact of corrosion mediums such as crude oil, stratum water, hydrogen sulfide, chloride ions and the like in the pit and a rod body is blocked, so that the corrosion resistance of the sucker rod is improved, and the service period is prolonged. The technology has the advantages of rich process types, wide application range of thermal spraying, strong coating binding force, low porosity and suitability for severe corrosion well conditions by taking wires such as zinc, aluminum and the like as raw materials in electric arc spraying, simple flame spraying equipment, flexible operation, suitability for small-batch treatment but weak coating binding strength, excellent performance in severe well conditions with concurrent corrosion and abrasion by utilizing high-temperature cladding ceramic materials in plasma spraying, and high cost and process complexity. In addition, the solid powder is deposited by high-pressure gas in cold spraying, so that the oxidation of materials can be avoided, and the electrostatic spraying is used for adsorbing high-molecular powder through static electricity and solidifying at high temperature, so that the coating is uniform and environment-friendly and is mainly used for medium corrosion well conditions. The sucker rod is in an elongated shape, most of the sucker rods are 22-38mm in diameter and 6-9m in length, the slenderness ratio is greater than 150, the spraying range of the thermal spraying spray gun is large, a large amount of sprayed metal melting materials pass through the side face of the sucker rod, and waste of spraying materials is caused. Even if a narrow spray gun is adopted, the area of the front surface for receiving the spraying material is small due to the circular shape of the sucker rod, and the spraying material is wasted. The core reason for the waste of the thermal spraying material is that the spraying material is difficult to focus on the surface of the slender rod body, a large amount of material is lost due to overspray and unadsorbed on a workpiece, the utilization rate of the spraying material is only 50% -70%, and is far lower than that of the thermal spraying material of a plate and a large-diameter workpiece, so that the utilization rate of the thermal spraying material of the sucker rod is urgently required to be improved to reduce the spraying cost. Disclosure of Invention The invention aims to solve at least one problem in the prior art, and provides a sucker rod anti-corrosion layer spraying device. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides a sucker rod anticorrosive coating spraying device, includes the dryer that the clearance encircleed the sucker rod and supplied the sucker rod to pass, dryer both sides wall symmetry wears to be equipped with the thermal spraying rifle head to the sucker rod spraying, the dryer upper and lower wall all wears to be equipped with the air current output subassembly, the air current output subassembly is including the first air-supply line that passes the wall of the dryer and the cloth bellows of connecting and first air-supply line inner, the air current output direction of cloth bellows is vertical and corresponds the sucker rod both sides, the air current output subassembly sets up four groups, four groups the air current output subassembly is from top to bottom symmetry, the thermal spraying material vertical span of thermal spra