Pipeline anticorrosive paint coating device and coating method thereof

Abstract

The invention discloses a pipeline anticorrosive paint coating device which is characterized in that the coating device comprises a placement support, the placement support is a frame body with the length matched with the length of a pipeline, a container used for containing anticorrosive paint is arranged in the frame body, and pipeline fixing pieces are arranged at the left end and the right end of the top face of the frame body; the fixing pieces are limiting blocks arranged on the two sides of the periphery of the pipeline and used for limiting the front-back position of the pipeline. Comprising a coating part, the coating part comprises a brush, the position of the brush is parallel to the pipeline, and the brush makes contact with the pipeline and is used for evenly smearing anticorrosive paint attached to the surface of the pipeline. According to the anticorrosive paint coating device, the pipeline is placed on the placement support, anticorrosive paint is contained in the container in the support, the pipeline makes contact with the paint, the outer surface of the pipeline can be rapidly coated with the paint by rotating the pipeline, and the working efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a pipe anti-corrosion coating device and its coating method. Background Technology

[0002] Pipeline corrosion protection is a crucial process for ensuring pipeline service life and safety, with widespread demand, especially in the petroleum, chemical, and construction industries. Traditional manual corrosion protection methods suffer from significant problems such as low efficiency, uneven coating, material waste, environmental pollution, poor quality stability, and high labor costs. These drawbacks are even more pronounced in mass prefabricated construction, severely restricting project progress and economic benefits. Therefore, the market needs a new construction method that can improve operational efficiency, guarantee coating quality, reduce environmental risks, and significantly lower labor costs.

[0003] In view of the above, developing a new exhaust treatment device that can effectively collect condensate and make full use of it is one of the important problems that needs to be solved. Summary of the Invention

[0004] In view of the above-mentioned problems in the existing technology, the purpose of the present invention is to provide a pipeline anti-corrosion coating device for rapidly and uniformly coating pipelines.

[0005] Another object of the present invention is to provide a method for applying anti-corrosion coatings to pipelines.

[0006] To solve the above problems, the present invention adopts the following technical solution: a pipe anti-corrosion coating application device, the application device including a mounting bracket, the mounting bracket being a frame whose length is adapted to the pipe length, a container for holding anti-corrosion coating being provided inside the frame, and pipe fixing components being pipe fixing blocks provided at the left and right ends of the top surface of the frame, the fixing components being limiting blocks provided on both sides of the pipe periphery for limiting the front and rear positions of the pipe;

[0007] The coating includes a coating section, which includes a brush positioned parallel to the pipe and in contact with the pipe, for spreading the anti-corrosion coating evenly on the pipe surface.

[0008] Furthermore, the top of the limiting block is a roller, which rotates along with the pipe during its rotation.

[0009] Furthermore, the coating part includes a support frame, one end of which is located on either side of the mounting bracket, and the other end is fixedly connected to the brush.

[0010] Furthermore, it includes an F-type crank handle, which includes a locking part and a handle part. The locking part includes two positioning blocks, which are perpendicular to one end of the handle part. The outer diameter formed by the combination of the positioning blocks matches the inner diameter of the pipe, and is used to lock the positioning blocks into the pipe so that the F-type crank handle is connected to the pipe.

[0011] This application also provides a coating method for implementing the aforementioned pipeline anti-corrosion coating device, the method comprising the following steps:

[0012] Step 1: Construction Preparation

[0013] Verify and locate the matching anti-corrosion coating device based on the pipe specifications in the procurement plan.

[0014] Set up the support frame and place the anti-corrosion coating device on a flat working surface;

[0015] Add coating material by injecting liquid anti-corrosion coating material into the container of the anti-corrosion coating device;

[0016] Step 2: Install the pipes to be treated

[0017] Pipe hoisting: Use lifting equipment to horizontally hoist the pipe to be coated to the anti-corrosion coating coating unit station;

[0018] Positioning and clamping: Place both ends of the pipe on the pipe fixing parts of the anti-corrosion coating device, and fix the position of the pipe by the limiting blocks;

[0019] Step 3: Perform the coating operation

[0020] Driven to rotate, the first operator engages the F-shaped crank handle with the inner wall of the pipe and cranks the handle at a constant speed, causing the pipe to rotate accordingly;

[0021] Simultaneous coating: While the pipe is rotating, the second operator uses a brush to evenly apply the anti-corrosion coating to the outer edge of the pipe.

[0022] Furthermore, this includes step four: completion and cleanup.

[0023] Once coating is complete, rotate the pipe more than one revolution to confirm that the outer surface of the pipe is evenly coated and reaches the designed thickness, then stop shaking the handle.

[0024] Removal and curing: The coated pipes are lifted off the anti-corrosion coating device and transferred to a designated site for static curing.

[0025] After use, clean the cleaning device, removing any residual paint from the container and brush to keep the equipment clean for the next use.

[0026] The buried pipeline requires three coats of anti-corrosion coating and two coats of fiber cloth. First, apply the first coat of anti-corrosion coating, and then the operator wraps the pipeline with fiber cloth while driving the pipeline.

[0027] The second operator monitors the coating process while rotating the pipe. If unevenness is found in certain areas, targeted manual touch-ups are performed, and paint is added to the container as needed.

[0028] Working Principle: The pipeline anti-corrosion coating device provided in this application comprises a frame with a length adapted to the pipeline length, inside which is a container for holding the anti-corrosion coating. Pipeline fixing components, which are limiting blocks located on both sides of the pipeline's perimeter, are provided on the left and right ends of the top surface of the frame to limit the pipeline's forward and backward position, ensuring contact between the pipeline and the anti-corrosion coating solution. The device includes a coating section, which includes a brush positioned parallel to the pipeline and in contact with it, used to evenly spread the anti-corrosion coating adhering to the pipeline surface. By rotating the pipeline, the outer surface is automatically coated with the anti-corrosion coating. The brush further ensures even spreading during rotation, improving the coating quality. The anti-corrosion coating device provided in this application effectively saves labor while improving coating quality. Compared to existing technologies, the beneficial technical effects of this invention are:

[0029] 1. The anti-corrosion coating device provided in this application, by placing the pipe on the mounting bracket and filling the container in the bracket with anti-corrosion coating, allows the pipe to come into contact with the coating. By rotating the pipe, the outer surface of the pipe can be quickly coated with the coating, which effectively improves work efficiency.

[0030] 2. The anti-corrosion coating device provided in this application, by setting a support frame on one side before and after the installation bracket, and a brush on one side of the support frame with the brush in contact with the pipeline, allows the brush to apply coating to the pipeline surface during pipeline rotation, ensuring uniform coating thickness and one-time formation, fundamentally solving the core problems of uneven coating and poor quality stability. At the same time, its precise quantitative coating method significantly reduces coating dripping and waste, not only saving material costs but also effectively reducing the risk of environmental pollution.

[0031] 3. The anti-corrosion coating method provided in this application simplifies the traditional process that relies on multiple people to complete into a highly efficient assembly line operation that only requires two people by having a first operator operate a brush and a second operator rotate the pipeline. This significantly saves labor costs and provides a complete, efficient, high-quality and economical solution for the batch anti-corrosion prefabrication of pipelines. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a pipeline anti-corrosion coating application device according to an embodiment of the present invention;

[0033] Among them, 1. mounting bracket, 2. container, 3. support frame, 4. fastener, 5. pipe, and 6. brush. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figure 1 As shown, this application provides a device for coating anti-corrosion coating on a pipe 5. The coating device includes a mounting bracket 1, which is a frame whose length is adapted to the length of the pipe 5. A container 2 for holding anti-corrosion coating is provided inside the frame. It should be noted that the container 2 is fixed to the bottom surface inside the frame and is a U-shaped or semi-circular trough-shaped open container 2 (which can be made from a cut-open waste pipe 5). At the same time, the width of the container 2 is greater than the outer diameter of the pipe 5, and its depth is sufficient to hold a sufficient amount of liquid anti-corrosion coating so that the lower half of the pipe 5 is immersed in the coating.

[0037] Pipe 5 fixing members 4 are provided at both ends of the top surface of the frame of pipe 5. The fixing members 4 are limiting blocks provided on both sides of the periphery of pipe 5. In some embodiments, the top of the limiting block is a roller. During the rotation of pipe 5, the roller rotates accordingly to limit the front and rear position of pipe 5. The coating part includes a coating section, which includes a brush 6. The brush 6 is parallel to pipe 5 and in contact with pipe 5 to spread the anti-corrosion coating on the surface of pipe 5 evenly. The coating part includes a support frame 3. One end of the support frame 3 is provided on either side of the mounting bracket 1, and the other end is fixedly connected to the brush 6. It should be noted that the brush 6 is a long strip brush 6, and the length of the brush 6 covers the entire effective coating section of pipe 5.

[0038] In some embodiments, the brush 6 is made of solvent-resistant nylon or pig bristles, and the bristles are in slight contact with the outer wall of the pipe 5.

[0039] In some preferred embodiments, to facilitate the operator to rotate the pipe 5, an F-shaped handle is included. The F-shaped handle includes a locking part and a handle part. The locking part includes two positioning blocks. The positioning blocks are perpendicular to one end of the handle part. The outer diameter formed by the combination of the positioning blocks matches the inner diameter of the pipe 5, and is used to lock the positioning blocks into the pipe 5 so that the F-shaped handle is connected to the pipe 5.

[0040] This application provides a coating method for a pipeline anti-corrosion coating device, used for batch anti-corrosion (single-layer coating) of ordinary carbon steel pipelines. The application scenario is a project in an industrial plant requiring epoxy coal tar anti-corrosion treatment of 100 6-meter-long, DN200 carbon steel overhead pipelines, with a requirement for uniform coating and adequate thickness. The method includes the following steps:

[0041] Implementation steps:

[0042] Step 1: Construction Preparation

[0043] According to the procurement plan, all pipes 5 are confirmed to be 6 meters in length, and anti-corrosion coating devices of matching length are selected.

[0044] Place the mounting bracket 1 on a flat, hardened ground, and inject sufficient liquid epoxy coal tar coating into the container 2 inside the frame;

[0045] The brush 6 was found to be in good condition and the top roller of the limit block rotated flexibly.

[0046] Step 2: Install the pipe to be treated (5 pipes)

[0047] A small crane was used to horizontally lift a pipe 5 to be treated to the top of the mounting bracket 1;

[0048] Place both ends of pipe 5 stably between the left and right limit blocks, supported by rollers and have their radial displacement restricted.

[0049] Step 3: Perform the coating operation

[0050] The first operator inserts the locking part of the F-type crank handle into the inner wall of one end of the pipe 5. The outer diameter of the two positioning blocks matches the inner diameter of DN200. The operator cranks the handle at a constant speed to make the pipe 5 rotate at a speed of about 2 rpm.

[0051] The second operator fixes the brush 6 with the support frame 3, so that the brush 6 is in close contact with the outer wall of the rotating pipe 5, and spreads the paint evenly on the pipe 5.

[0052] After pipe 5 rotates one revolution, visually inspect for any missed areas or accumulations, confirming that the coating is uniform.

[0053] Completion and Cleanup

[0054] Stop shaking, lift the coated pipe 5 to the curing area and let it stand to cure;

[0055] Repeat the above process to process the next pipe 5;

[0056] After the day's work is completed, clean container 2 and brush 6 to prevent the paint from drying out.

[0057] The method provided in this application requires only 2 people to efficiently complete the coating of a single pipe, taking about 8 minutes per pipe, with a coating thickness deviation of <10%, which is significantly better than traditional manual brushing.

[0058] This application provides a method for applying anti-corrosion coating to a pipeline 5, which is used for "three-oil and two-cloth" composite anti-corrosion construction of buried pipeline 5. The construction application scenario is that a project requires "three-oil and two-cloth" (three layers of coating + two layers of fiberglass cloth) anti-corrosion treatment for a 9-meter-long, DN300 buried steel pipe.

[0059] The method includes the following steps:

[0060] Step 1: Device Adaptation and Preparation

[0061] A 9-meter-long fixed-length coating device was selected, and the first coat of primer (epoxy coal tar pitch) was injected into container 2.

[0062] Prepare a sufficient amount of fiberglass cloth rolls and place them within the operator's reach.

[0063] First coat and wrapping

[0064] Install pipe 5 and start rotating (F-type crank drive);

[0065] The first operator uses a brush to ensure that the first layer of paint is evenly applied.

[0066] Simultaneously, spirally wrap the fiberglass cloth along the five axes of the pipe from one side, turning and wrapping at the same time to ensure no wrinkles or bubbles;

[0067] After wrapping, continue to rotate half a turn to ensure the fabric and coating adhere fully.

[0068] Second and third coats

[0069] After the first layer is completed, repeat the above process:

[0070] A second layer of intermediate coating is injected, and a second layer of fiber cloth is applied and wrapped around it.

[0071] The third application involves only applying a topcoat, without wrapping the cloth again.

[0072] Each coating is completed using the same equipment, with only the paint batch being changed.

[0073] Quality monitoring and repainting

[0074] The second operator observes the continuity of the coating throughout the process and manually touches up the overlapping or corner areas of the fiber cloth.

[0075] If the coating in container 2 is insufficient, replenish it promptly to maintain the liquid level.

[0076] Maintenance and cleaning

[0077] After completing the three coats of oil and two coats of cloth, pipe 5 is hoisted to a cool, ventilated place to cure for 72 hours;

[0078] The device should be thoroughly cleaned, and brush 6 should be replaced or maintained.

[0079] The method described in this application avoids interlayer contamination or poor bonding caused by traditional step-by-step construction; the number of workers required is reduced from 4-5 to 2, and the construction period is shortened by more than 40%.

[0080] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0081] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipeline (5) anticorrosive coating application device, characterized in that, The coating device comprises a placement support (1), which is a frame with a length matching that of the pipeline (5), a container (2) for containing anticorrosive paint is arranged in the frame, pipeline (5) fixing members (4) are arranged at the left and right ends of the top surface of the frame, the fixing members (4) are limiting blocks arranged at the two sides of the periphery of the pipeline (5) and used for limiting the front and back positions of the pipeline (5); The coating device comprises a coating part, the coating part comprises a brush (6), the brush (6) is arranged in parallel with the pipeline (5) and in contact with the pipeline (5), and is used for evenly smearing the anticorrosive paint adhered to the surface of the pipeline (5).

2. A pipeline (5) anticorrosive coating application apparatus according to claim 1, characterized in that, The top of the limiting block is a roller, and the roller rotates with the pipeline (5) during the rotation of the pipeline (5).

3. A pipeline (5) anticorrosive coating application apparatus according to claim 1, characterized in that, The coating part comprises a support frame (3), one end of the support frame (3) is arranged on any one side of the placement support (1), and the other end is fixedly connected with the brush (6).

4. A pipeline (5) anticorrosive coating application apparatus according to claim 1, characterized in that, The F-shaped handle comprises a clamping part and a handle part, the clamping part comprises two positioning blocks, the positioning blocks are perpendicular to one end of the handle part, the outer diameters of the positioning blocks combined together match the inner diameter of the pipeline (5), the positioning blocks are clamped in the pipeline (5) to connect the F-shaped handle with the pipeline (5).

5. A coating method for implementing the coating apparatus for anticorrosive coating of a pipe (5) according to claim 1, characterized in that, The method comprises the following steps: Step one, construction preparation Check and position, according to the specifications of the pipeline (5) in the procurement plan, confirm the anticorrosive paint coating device matched with the pipeline (5); Place the placement support (1) on a flat work surface; Add paint, inject liquid anticorrosive paint into the container (2) of the anticorrosive paint coating device; Step two, install the pipeline (5) to be treated Hoist the pipeline (5), use hoisting equipment to horizontally hoist the pipeline (5) to be coated to the anticorrosive paint coating device work station; Position and clamp, place the two ends of the pipeline (5) on the pipeline (5) fixing members (4) of the anticorrosive paint coating device, and fix the position of the pipeline (5) through the limiting blocks; Step three, perform the coating operation Drive rotation, the first operator clamps the F-shaped handle in the inner wall of the pipeline (5) and uniformly shakes the handle part, and the pipeline (5) rotates accordingly; Synchronous brushing, the second operator brushes the anticorrosive paint on the outer edge of the pipeline (5) while the pipeline (5) rotates.

6. A method of applying a corrosion protective coating to a pipe (5) according to claim 5, characterised in that, Step four, complete and clean up Coating is completed, rotate the pipeline (5) more than one round, confirm that the outer surface of the pipeline (5) is evenly coated and reaches the designed thickness, and stop shaking the handle; Move out and maintain, hoist the pipeline (5) after coating away from the anticorrosive paint coating device and transfer to a designated site for standing, curing and maintenance; Clean up the device, after use, clean up the residual paint on the container (2) and the brush (6) to keep the equipment clean for next use. The buried pipeline (5) requires three coats of oil and two coats of cloth, first coat the anticorrosive paint, and the second operator winds the fiber cloth while driving the pipeline (5).

7. A method of applying a corrosion protective coating to a pipe (5) according to claim 5, characterised in that, The second operator rotates the pipeline (5) while monitoring the coating process, if local unevenness is found, targeted manual supplementary brushing is performed, and paint is supplemented in the container (2) as appropriate.

8. A method of applying a corrosion protective coating to a pipe (5) according to claim 5, characterised in that, ​

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