CN110375152B - Petroleum pipeline anticorrosion and heat preservation treatment method - Google Patents
Petroleum pipeline anticorrosion and heat preservation treatment method Download PDFInfo
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- CN110375152B CN110375152B CN201910654231.7A CN201910654231A CN110375152B CN 110375152 B CN110375152 B CN 110375152B CN 201910654231 A CN201910654231 A CN 201910654231A CN 110375152 B CN110375152 B CN 110375152B
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- smearing
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- coating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to an anticorrosion and heat-insulation treatment method for a petroleum pipeline, which comprises a bottom plate, a moving device and a smearing device, wherein the moving device is installed at the upper end of the bottom plate, and the smearing device is installed in the middle of the upper end of the moving device. The invention can solve the problems that when the existing petroleum pipeline is subjected to anticorrosion treatment, the treatment effect of the pipeline surface is poor, and impurities such as oil stain, rust, welding slag and the like on the outer surface of the pipeline are not completely treated, so that the adhesion effect of an anticorrosion coating is poor, the anticorrosion coating is easy to fall off, and meanwhile, when the coating is applied on the pipeline surface, the coating is applied in a manual mode usually, the coating on the lower end surface of the pipeline is inconvenient to apply, the coating application effect is poor and uneven, the phenomenon of coating leakage is easy to occur and the like.
Description
Technical Field
The invention relates to the technical field of pipeline corrosion prevention, in particular to a petroleum pipeline corrosion prevention and heat preservation treatment method.
Background
Petroleum is one of important energy sources, plays an extremely important role in the rapid development of social economy, but the construction of oil and gas pipelines still has the problems, and after the petroleum pipelines are used for a long time, the pipelines are corroded, perforated and leaked, so that harm is brought to the public and the environment, the development of enterprises is seriously influenced, and the economic benefit of the enterprises is reduced. How to ensure the anti-corrosion effect of the oil and gas pipeline is an important problem faced by the present enterprises.
When the existing petroleum pipeline is subjected to antiseptic treatment, the following defects are generally existed: 1. the pipeline surface treatment effect is poor, and impurities such as oil stains, rusts, welding slag and the like on the outer surface of the pipeline are not completely treated, so that the adhesion effect of the anticorrosive coating is poor, and the anticorrosive coating is easy to fall off; 2. when the surface of the installed pipeline is coated with the coating, the coating is usually manually coated, the coating on the lower end face of the pipeline is inconvenient to coat, the coating effect is poor and uneven, and the phenomenon of coating omission is easy to occur.
Disclosure of Invention
Technical problem to be solved
The invention can solve the problems that when the existing petroleum pipeline is subjected to anticorrosion treatment, the treatment effect of the pipeline surface is poor, and impurities such as oil stain, rust, welding slag and the like on the outer surface of the pipeline are not completely treated, so that the adhesion effect of an anticorrosion coating is poor, the anticorrosion coating is easy to fall off, and meanwhile, when the coating is applied on the pipeline surface, the coating is usually applied in a manual mode, the coating on the lower end surface of the pipeline is inconvenient to apply, the coating application effect is poor and uneven, and the phenomenon of coating leakage is easy to occur.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme that the petroleum pipeline anticorrosion heat-insulation treatment method comprises the following steps:
s1, cleaning a pipeline: cleaning the outer surface of the petroleum pipeline by using a solvent, an emulsion and the like to remove impurities such as grease, dust lubricant and the like on the surface of the pipeline;
s2, surface rust removal: polishing the pipeline cleaned in the step S1 by using a tool such as a wire brush to remove residues such as loose or raised oxide skin, rust and welding slag on the surface of the pipeline;
s3, acid washing and water washing: further processing the outer surface of the pipeline in an acid washing mode to improve the cleanliness and the roughness of the surface of the pipeline, and removing acid liquor remaining on the surface of the pipeline in a water washing mode;
s4, coating treatment: placing the bottom plate at the lower end of the pipeline cleaned in the step S3, uniformly coating the anti-corrosion coating at the lower end of the pipeline by using a coating device, and uniformly coating the upper end face of the pipeline in a manual mode;
s5, air drying and curing: air-drying and curing the pipeline coated with the anticorrosive coating in the step S4 in the air;
s6, heat preservation treatment: and (5) installing an insulating layer on the outer surface of the pipeline in the step 5S in a manual mode.
The working procedures of the petroleum pipeline anticorrosion heat-preservation treatment method in the steps S1-S6 need to be completed by matching the bottom plate, the moving device and the smearing device.
The upper end of the bottom plate is provided with a moving device, and the middle part of the upper end of the moving device is provided with a smearing device.
Scribble the device include box, adjustment mechanism, paint the mechanism and touch even mechanism, the box install in the mobile device upper end, the box is the rectangle structure, the inside arc open slot that is provided with of box, adjustment mechanism is installed to the inside symmetry of open slot, install between the adjustment mechanism upper end and paint the mechanism, paint mechanism outside symmetry and be provided with and touch even mechanism, touch even mechanism and install on adjustment mechanism, concrete during operation, adjustment mechanism can swing the regulation to painting the mechanism, paint the mechanism and can paint the terminal surface under the petroleum pipeline with anticorrosive coating, touch even mechanism and can evenly spread out the anticorrosive coating on pipeline surface.
Scribble the mechanism include the mount, rotate the branch chain, scribble the roller, scribble branch chain and inlet, the mount install in adjustment mechanism upper end, install between the mount and rotate the branch chain, rotate and install through the bearing on the branch chain and scribble the roller, scribble and evenly be provided with concave groove on the roller, concave groove internally evenly installs and scribbles the branch chain, scribble the roller right-hand member and install the inlet, the inlet is located inside the mount, concrete during operation, rotate the branch chain and drive and scribble the roller, when scribbling the roller and rotate, scribble and scribble branch chain and pipeline emergence extrusion on the roller, scribble the anticorrosive paint of roller inside and scribble the branch.
Scribble the branch chain including scribbling the board, the diaphragm, piston rod and expanding spring, the concave groove inside be connected with the diaphragm through sliding fit's mode, evenly be provided with the slotted hole on the diaphragm, scribble the board outside and install and scribble the board, it makes for rubber materials to scribble the board, it evenly is provided with the brush hair to scribble on the board, the diaphragm lower extreme is provided with the piston rod, the piston rod passes through sliding fit's mode and scribbles the roller and be connected, install expanding spring on the piston rod, concrete during operation, when scribbling branch chain and pipeline surface contact, it extrudees the piston rod through the diaphragm to scribble the board, expanding spring is in compression state, anticorrosive paint flows through the piston hole, scribble the board and scribble paint coating on the pipeline, when scribbling branch chain and pipeline surface non-contact, expanding spring.
Preferably, the moving device comprises an electric sliding block, a sliding plate, a sliding groove frame and a sliding block, the electric sliding block is mounted in the middle of the upper end of the bottom plate, the upper end of the electric sliding block is connected with the middle of the smearing device through the sliding plate, the sliding groove frame is symmetrically mounted at the upper end of the bottom plate, the sliding block is connected to the inside of the sliding groove frame in a sliding fit mode, the sliding block is connected with the outer side of the smearing device, and when the device works, the electric sliding block drives the smearing device to move back and forth through the sliding plate, so that the.
Preferably, adjustment mechanism include arc electric sliding block, slide, electric putter and connecting plate, arc electric sliding block install inside the box, be provided with the slide on the arc electric sliding block, slide upper end middle part is provided with electric putter, electric putter's top has the connecting plate through flange joint, concrete during operation, arc electric sliding block and petroleum pipeline coaxial line, arc electric sliding block drives the slide and swings, electric putter can be to highly adjusting of paining the mechanism.
Preferably, the even mechanism of touching include link, coupling spring and apply paint the roller with a brush, the link be connected with adjustment mechanism upper end through the round pin axle, install through the bearing between the link and apply paint the roller with a brush, install coupling spring between link and the adjustment mechanism upper end.
Preferably, the rotating branched chain comprises a rotating motor, a rotating shaft, rotating teeth, an external gear and stirring blades, the rotating shaft is connected with the fixed frame through a bearing, the rotating teeth are mounted in the middle of the fixed frame, the rotating teeth are meshed with the external gear, the external gear is mounted in the middle of the inner side of the smearing roller, and the stirring blades are uniformly mounted on the rotating shaft along the circumferential direction of the external gear.
Preferably, the stirring blades are uniformly provided with through holes.
Preferably, the inner side surface of the smearing roller is uniformly provided with an arc-shaped plate.
(III) advantageous effects
1. According to the petroleum pipeline anticorrosion heat-insulation treatment method provided by the invention, a treatment mode of treating firstly and then coating is adopted, so that impurities such as residual oil stain, rust, welding slag and the like on the surface of the pipeline can be effectively removed, the adhesion stability of the anticorrosion coating is ensured, and meanwhile, the anticorrosion coating is good in smearing effect and even in smearing;
2. according to the petroleum pipeline anticorrosion heat-insulation treatment method provided by the invention, the smearing device can be used for uniformly smearing the lower end of the pipeline, so that the inconvenience of manual operation is reduced, the smearing efficiency of an anticorrosion coating is improved, the phenomenon of coating leakage can be avoided, and the pipeline is prevented from being corroded and damaged.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the corrosion and heat preservation treatment method for a petroleum pipeline according to the present invention;
FIG. 2 is a schematic structural view between the moving device and the applying device of the base plate of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2 of the present invention;
FIG. 4 is a schematic cross-sectional view of the applicator mechanism of the present invention;
FIG. 5 is a schematic cross-sectional view of the present invention between the applicator roll and the applicator arm;
fig. 6 is a schematic view of the present invention in use during operation.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 6, a method for corrosion prevention and heat preservation treatment of a petroleum pipeline comprises the following steps:
s1, cleaning a pipeline: cleaning the outer surface of the petroleum pipeline by using a solvent, an emulsion and the like to remove impurities such as grease, dust lubricant and the like on the surface of the pipeline;
s2, surface rust removal: polishing the pipeline cleaned in the step S1 by using a tool such as a wire brush to remove residues such as loose or raised oxide skin, rust and welding slag on the surface of the pipeline;
s3, acid washing and water washing: further processing the outer surface of the pipeline in an acid washing mode to improve the cleanliness and the roughness of the surface of the pipeline, and removing acid liquor remaining on the surface of the pipeline in a water washing mode;
s4, coating treatment: placing the bottom plate 1 at the lower end of the pipeline cleaned in the step S3, uniformly coating the anti-corrosion coating at the lower end of the pipeline by the coating device 3, and uniformly coating the upper end face of the pipeline in a manual mode;
s5, air drying and curing: air-drying and curing the pipeline coated with the anticorrosive coating in the step S4 in the air;
s6, heat preservation treatment: and (4) manually installing an insulating layer on the outer surface of the pipeline in the step S5.
In the petroleum pipeline anticorrosion heat-preservation treatment method, the operation procedures in the steps S1-S6 need to be completed by matching the bottom plate 1, the moving device 2 and the smearing device 3.
The upper end of the bottom plate 1 is provided with a moving device 2, and the middle part of the upper end of the moving device 2 is provided with a smearing device 3.
The moving device 2 comprises an electric sliding block 21, a sliding plate 22, a sliding groove frame 23 and a sliding block 24, the electric sliding block 21 is installed in the middle of the upper end of the bottom plate 1, the upper end of the electric sliding block 21 is connected with the middle of the smearing device 3 through the sliding plate 22, the sliding groove frame 23 is symmetrically installed at the upper end of the bottom plate 1, the sliding block 24 is connected to the inside of the sliding groove frame 23 in a sliding fit mode, the sliding block 24 is connected with the outer side of the smearing device 3, and during specific work, the electric sliding block 21 drives the smearing device 3 to move back and forth through the sliding plate 22, so that the.
The coating mechanism 33 comprises a fixing frame 331, a rotating branched chain 332, a coating roller 333, a coating branched chain 334 and a liquid inlet 335, the fixing frame 331 is installed at the upper end of the adjusting mechanism 32, the rotating branched chain 332 is installed between the fixing frame 331, the coating roller 333 is installed on the rotating branched chain 332 through a bearing, a concave groove is evenly formed in the coating roller 333, the coating branched chain 334 is evenly installed in the concave groove, the liquid inlet 335 is installed at the right end of the coating roller 333, the liquid inlet 335 is located inside the fixing frame 331, an arc-shaped plate 3331 is evenly installed on the inner side surface of the coating roller 333, during specific work, the rotating branched chain 332 drives the coating roller 333, when the coating roller 333 rotates, the coating branched chain 334 on the coating roller 333 is extruded with a pipeline, and anticorrosive paint inside the coating roller 333 is.
The rotating branched chain 332 comprises a rotating motor 3321, a rotating shaft 3322, rotating teeth 3323, an external gear 3324 and stirring blades 3325, the rotating shaft 3322 is connected with a fixed frame 331 through a bearing, the rotating teeth 3323 are installed in the middle of the fixed frame 331, the rotating teeth 3323 are meshed with the external gear 3324, the external gear 3324 is installed in the middle of the inner side of the smearing roller 333, the stirring blades 3325 are evenly installed on the rotating shaft 3322 along the circumferential direction of the rotating shaft 3322, through holes are evenly formed in the stirring blades 3325, during specific work, the rotating motor 3321 drives the smearing roller 333 to rotate through the rotating shaft 3322, and the stirring blades 3325 can evenly mix paint inside the smearing roller 333.
The smearing branched chain 334 comprises a smearing plate 3341, a transverse plate 3342, a piston rod 3343 and a telescopic spring 3344, the interior of the concave groove is connected with a transverse plate 3342 in a sliding fit manner, slotted holes are uniformly formed in the transverse plate 3342, an smearing plate 3341 is arranged on the outer side of the transverse plate 3342, the smearing plate 3341 is made of rubber materials, bristles are uniformly arranged on the smearing plate 3341, a piston rod 3343 is arranged at the lower end of the transverse plate 3342, the piston rod 3343 is connected with the smearing roller 333 in a sliding fit manner, a telescopic spring 3344 is arranged on the piston rod 3343, and during the specific work, when the smearing branched chain 334 is contacted with the surface of the pipeline, the smearing plate 3341 extrudes the piston rod 3343 through the transverse plate 3342, the telescopic spring 3344 is in a compressed state, the anticorrosive paint flows out through the piston hole, the smearing plate 3341 coats the paint on the pipeline, when the wiper arm 334 is not in contact with the pipe surface, the extension spring 3344 is reset and the piston rod 3343 seals against the piston bore.
The even mechanism 34 of touching include link 341, coupling spring 342 and apply paint the roller 343, link 341 be connected with adjustment mechanism 32 upper end through the round pin axle, install between link 341 and the bearing and apply paint the roller 343, install coupling spring 342 between link 341 and the adjustment mechanism 32 upper end, during specific work, apply paint the roller 343 and hug closely with the pipeline outer wall, apply paint the roller 343 and then evenly paint anticorrosive paint.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An anticorrosion and heat-insulation treatment method for a petroleum pipeline is characterized by comprising the following steps: the petroleum pipeline anticorrosion heat-insulation treatment method comprises the following steps:
s1, cleaning a pipeline: cleaning the outer surface of the petroleum pipeline through a solvent and an emulsion to remove grease and dust lubricants on the surface of the pipeline;
s2, surface rust removal: polishing the pipeline cleaned in the step S1 by a steel wire brush to remove loose or raised oxide skin, iron rust and welding slag on the surface of the pipeline;
s3, acid washing and water washing: further processing the outer surface of the pipeline in an acid washing mode to improve the cleanliness and the roughness of the surface of the pipeline, and removing acid liquor remaining on the surface of the pipeline in a water washing mode;
s4, coating treatment: placing the bottom plate (1) at the lower end of the pipeline cleaned in the step S3, uniformly coating the anticorrosive coating on the lower end of the pipeline by the coating device (3), and uniformly coating the upper end face of the pipeline manually;
s5, air drying and curing: air-drying and curing the pipeline coated with the anticorrosive coating in the step S4 in the air;
s6, heat preservation treatment: installing an insulating layer on the outer surface of the pipeline in the step S5 in a manual mode;
in the petroleum pipeline anticorrosion heat-preservation treatment method, the operation procedures in the steps S1-S6 need to be completed by the matching of the bottom plate (1), the moving device (2) and the smearing device (3), wherein:
the upper end of the bottom plate (1) is provided with a moving device (2), and the middle part of the upper end of the moving device (2) is provided with a smearing device (3);
the smearing device (3) comprises a box body (31), an adjusting mechanism (32), a smearing mechanism (33) and a uniform-touch mechanism (34), wherein the box body (31) is installed at the upper end of the moving device (2), the box body (31) is of a rectangular structure, an arc-shaped open slot is formed in the box body (31), the adjusting mechanism (32) is symmetrically installed in the open slot, the smearing mechanism (33) is installed between the upper ends of the adjusting mechanism (32), the uniform-touch mechanism (34) is symmetrically arranged on the outer side of the smearing mechanism (33), and the uniform-touch mechanism (34) is installed on the adjusting mechanism (32);
the smearing mechanism (33) comprises a fixed frame (331), a rotating branched chain (332), smearing rollers (333), a smearing branched chain (334) and a liquid inlet (335), the fixed frame (331) is installed at the upper end of the adjusting mechanism (32), the rotating branched chain (332) is installed between the fixed frames (331), the smearing rollers (333) are installed on the rotating branched chain (332) through bearings, concave grooves are evenly formed in the smearing rollers (333), the smearing branched chain (334) is evenly installed inside the concave grooves, the liquid inlet (335) is installed at the right end of the smearing rollers (333), and the liquid inlet (335) is located inside the fixed frame (331);
smear branch chain (334) including smearing board (3341), diaphragm (3342), piston rod (3343) and expanding spring (3344), the concave groove inside be connected with diaphragm (3342) through sliding fit's mode, evenly be provided with the slotted hole on diaphragm (3342), smearing board (3341) is installed to diaphragm (3342) outside, smearing board (3341) is made for rubber materials, evenly be provided with the brush hair on smearing board (3341), diaphragm (3342) lower extreme is provided with piston rod (3343), piston rod (3343) are connected with smearing roller (333) through sliding fit's mode, install expanding spring (3344) on piston rod (3343).
2. The petroleum pipeline anticorrosion heat-insulation treatment method as claimed in claim 1, wherein the petroleum pipeline anticorrosion heat-insulation treatment method comprises the following steps: the moving device (2) comprises an electric sliding block (21), a sliding plate (22), a sliding groove frame (23) and a sliding block (24), the electric sliding block (21) is installed in the middle of the upper end of the base plate (1), the upper end of the electric sliding block (21) is connected with the middle of the smearing device (3) through the sliding plate (22), the sliding groove frame (23) is symmetrically installed on the upper end of the base plate (1), the sliding groove frame (23) is connected with the sliding block (24) inside in a sliding fit mode, and the sliding block (24) is connected with the outer side of the smearing device (3).
3. The petroleum pipeline anticorrosion heat-insulation treatment method as claimed in claim 1, wherein the petroleum pipeline anticorrosion heat-insulation treatment method comprises the following steps: the adjusting mechanism (32) comprises an arc-shaped electric slider (321), a sliding plate (322), an electric push rod (323) and a connecting plate (324), the arc-shaped electric slider (321) is installed inside the box body (31), the sliding plate (322) is arranged on the arc-shaped electric slider (321), the electric push rod (323) is arranged in the middle of the upper end of the sliding plate (322), and the top end of the electric push rod (323) is connected with the connecting plate (324) through a flange.
4. The petroleum pipeline anticorrosion heat-insulation treatment method as claimed in claim 1, wherein the petroleum pipeline anticorrosion heat-insulation treatment method comprises the following steps: the uniform-touch mechanism (34) comprises connecting frames (341), connecting springs (342) and a brushing roller (343), the connecting frames (341) are connected with the upper end of the adjusting mechanism (32) through pin shafts, the brushing roller (343) is installed between the connecting frames (341) through bearings, and the connecting springs (342) are installed between the connecting frames (341) and the upper end of the adjusting mechanism (32).
5. The petroleum pipeline anticorrosion heat-insulation treatment method as claimed in claim 1, wherein the petroleum pipeline anticorrosion heat-insulation treatment method comprises the following steps: rotate branch chain (332) including rotating motor (3321), axis of rotation (3322), rotate tooth (3323), external gear (3324) and stirring leaf (3325), axis of rotation (3322) be connected with mount (331) through the bearing, mount (331) mid-mounting has rotation tooth (3323), it has external gear (3324) to rotate tooth (3323) meshing, external gear (3324) are installed in daubing roller (333) inboard middle part, stirring leaf (3325) are evenly installed along its circumference on axis of rotation (3322).
6. The petroleum pipeline anticorrosion heat-insulation treatment method as claimed in claim 5, wherein the petroleum pipeline anticorrosion heat-insulation treatment method comprises the following steps: the stirring blades (3325) are uniformly provided with through holes.
7. The petroleum pipeline anticorrosion heat-insulation treatment method as claimed in claim 1, wherein the petroleum pipeline anticorrosion heat-insulation treatment method comprises the following steps: the inner side surface of the smearing roller (333) is uniformly provided with an arc-shaped plate (3331).
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| CN111795206B (en) * | 2020-06-10 | 2022-04-19 | 深圳市燃气集团股份有限公司 | Pipeline rust prevention method |
| CN113001365A (en) * | 2021-02-23 | 2021-06-22 | 南京绪风科技有限公司 | Manufacturing and processing technology of chemical anti-corrosion and anti-rust steel lining polyvinyl chloride pipe |
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| CN114833052A (en) * | 2022-06-01 | 2022-08-02 | 杨凤娇 | Construction process of anticorrosive heat-insulating coating |
| CN114950873B (en) * | 2022-06-19 | 2023-01-31 | 陕西华辰亚联石油工程有限公司 | Corrosion prevention process for factory prefabricated corrosion-resistant alloy inner joint coating of fluid conveying pipeline |
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