A kind of film coating device for gathering pipeline corrosion inhibitor

Abstract

The utility model provides a kind of film coating device for gathering and transporting pipeline corrosion inhibitor, comprising: brush disc, atomization mobile vehicle with atomization head in end portion, and installation plate with gyro wheel in bottom portion being set between atomization head and brush disc, atomization head is connected brush disc by connecting rod in end portion away from atomization mobile vehicle, installation plate is fixedly connected with the side surface of connecting rod, the inner wall of gyro wheel is fixed with one or more magnet blocks, and outer wall is sleeved with rubber sleeve, installation plate is provided with the brush piece that is in close contact with the surface of rubber sleeve at near bottom portion, installation plate is provided with the chippings groove for receiving iron filings in the lower part of brush piece.The utility model can avoid the adverse effects of iron filings on corrosion inhibitor film coating, improve the film coating effect, and reduce the wear of iron filings on sealing leather bowl.

Description

Technical Field

[0001] This utility model belongs to the field of oil and gas gathering and transportation technology, specifically, it relates to a coating device for corrosion inhibitors in gathering and transportation pipelines. Background Technology

[0002] Gathering and transportation pipelines include pipelines connecting oil and gas wells to oil and gas processing plants and from oil and gas processing plants to oil and gas storage facilities. These pipelines have small diameters, low pressures, and are mostly made of steel pipes, primarily used for oil extraction, processing, transportation, and storage. Because the medium transported in these pipelines is crude oil, they require strong corrosion resistance and need to be flushed with corrosion inhibitors to slow down the aging process.

[0003] Flushing with corrosion inhibitors consumes a large amount of the inhibitor, leading to the increasing popularity of corrosion inhibitor coating methods. The principle is to atomize the corrosion inhibitor and then spray the atomized inhibitor inside the pipe, requiring only a small amount of inhibitor for coating. However, during use, it was found that some pipe inner walls have iron filings (or rust). Some of the atomized inhibitor adheres to these filings, which are then scraped off by the sealing cup, resulting in some of the inhibitor failing to function properly and reducing the coating effect. Furthermore, the sealing cup design makes it difficult for iron filings to pass through; as the coating device moves, the iron filings accumulate, affecting the device's movement and causing significant wear on the sealing cup. Utility Model Content

[0004] One objective of this invention is to provide a coating device for corrosion inhibitors in gathering and transportation pipelines, so as to avoid the adverse effects of iron filings on the corrosion inhibitor coating, improve the coating effect, and at the same time reduce the wear of iron filings on the sealing cups.

[0005] According to this utility model, a coating device for corrosion inhibitors in gathering and transportation pipelines is provided, comprising: a brush disc, an atomizing moving vehicle with an atomizing head at one end, and a mounting plate disposed between the atomizing head and the brush disc and having rollers at the bottom. The atomizing head is connected to the brush disc via a connecting rod at the end away from the atomizing moving vehicle. The mounting plate is fixedly connected to the side surface of the connecting rod. One or more magnet blocks are fixed to the inner wall of the rollers, and a rubber sleeve is fitted on the outer wall. The mounting plate is provided with a brush piece near the bottom that fits against the surface of the rubber sleeve. The mounting plate is provided with a debris groove for receiving iron filings at the lower part of the brush piece.

[0006] In a preferred embodiment, the brush blades extend in a direction parallel to the axis of the gathering and transportation pipeline.

[0007] In a preferred embodiment, three magnet blocks are evenly arranged on the inner wall of the roller.

[0008] In a preferred embodiment, the atomizing mobile vehicle includes: a cylindrical body with both ports sealed by a sealing assembly and an internal partition, the partition dividing the interior of the cylindrical body into a liquid storage chamber and a premixing chamber, the bottom plate of the liquid storage chamber having an atomizing structure for atomizing the corrosion inhibitor, the premixing chamber being connected to the atomizing head through a divergence channel, the cylindrical body having an air duct on the sealing assembly at the port away from the atomizing head for airflow to enter the liquid storage chamber, and the partition having a through hole at the top.

[0009] In a preferred embodiment, the atomizing head is provided with a plurality of diverging channels, which are distributed in a conical shape.

[0010] In a preferred embodiment, the top of the liquid storage cavity is provided with an injection port for injecting corrosion inhibitor into the liquid storage cavity.

[0011] In a preferred embodiment, the sealing assembly includes: a cover plate, a sealing cup, and a guide plate abutting between the cover plate and the sealing cup. The cover plate is fixedly connected to the cylinder and is used to seal the two ports of the cylinder. A threaded component passes through the sealing cup and the guide plate in sequence and enters the cover plate to fix the cover plate, the sealing cup, and the guide plate together.

[0012] In a preferred embodiment, the air intake hole is provided on the cover plate away from the atomizing head, and the air intake hole is located near the top of the cover plate.

[0013] In a preferred embodiment, the coating device for corrosion inhibitors in gathering and transportation pipelines includes two brush discs spaced apart on the connecting rod.

[0014] In a preferred embodiment, the atomizing head is further fitted with a sponge on the surface near the cylinder, the sponge being constructed in a ring shape and in contact with the inner wall of the gathering and conveying pipe.

[0015] This utility model has at least the following technical effects:

[0016] According to this utility model, by setting a brush disc and a roller with a magnet on the inner wall at the front end of the atomizing head, during the coating process, the brush disc first cleans the iron filings from the inner wall of the collection and transportation pipe. The iron filings fall to the bottom of the collection and transportation pipe. Since the roller is in close contact with the collection and transportation pipe and the inner wall of the roller has a magnet, during the movement of the coating device, the roller rotates and when the magnet rotates to the bottom, the iron filings are attracted and adhere to the surface of the rubber sleeve. When the iron filings move to the brush disc by following the rotation of the roller, the brush disc blocks the iron filings so that they cannot continue to rise. The magnet gradually moves away from the iron filings by rotating, so that the iron filings fall into the debris trough because they are no longer attracted. This can avoid the iron filings from having an adverse effect on the corrosion inhibitor coating, improve the coating effect, and at the same time reduce the wear of the sealing cup by the iron filings. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a coating device for corrosion inhibitors in gathering and transportation pipelines according to an embodiment of the present invention is shown.

[0018] Figure 2 schematically shown Figure 1 A magnified structural diagram of point A in the middle.

[0019] In this application, all the accompanying drawings are schematic drawings, used only to illustrate the principle of the present invention, and are not drawn to scale. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of the utility model, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figures 1 to 2 As shown, the coating device 100 for corrosion inhibitors in gathering and transportation pipelines according to this utility model includes: a brush disc 16, an atomizing moving cart with an atomizing head 12 at one end, and a mounting plate 15 disposed between the atomizing head 12 and the brush disc 16 and having rollers 17 at the bottom. The atomizing head 12 is connected to the brush disc 16 via a connecting rod 14 at the end away from the atomizing moving cart. The mounting plate 15 is fixedly connected to the side surface of the connecting rod 14. One or more magnet blocks 19 are fixed to the inner wall of the rollers 17, and a rubber sleeve 18 is fitted on the outer wall. The rubber sleeve 18 is used to increase friction and reduce the adsorption force of the magnet blocks 19, preventing the magnet blocks 19 from adsorbing onto the gathering and transportation pipeline 1, and ensuring that the rollers 17 roll normally. The mounting plate 15 is provided with brush pieces 20 near the bottom that are in contact with the surface of the rubber sleeve 18 to block iron filings adsorbed on the surface of the rubber sleeve 18. The top and bottom surfaces of the brush plate 16 are in contact with the inner wall of the collection and transportation pipeline 1, and the mounting plate 15 is provided with a chip groove 21 for receiving iron filings at the lower part of the brush plate 20.

[0024] According to this utility model, by setting a brush disc 16 and a roller 17 with a magnet block 19 on the inner wall at the front end of the atomizing head 12, during the coating process, the brush disc 16 first cleans the iron filings on the inner wall of the collection and transportation pipe 1. The iron filings fall to the bottom of the collection and transportation pipe 1. Since the roller 17 is in close contact with the collection and transportation pipe 1 and the inner wall of the roller 17 has a magnet block 19, during the movement of the coating device 100, the roller 17 rotates and when the magnet block 19 rotates to the bottom, the iron filings are attracted and attached to the surface of the rubber sleeve 1. When the iron filings move to the brush plate 20 by following the rotation of the roller 17, the brush plate 20 blocks the iron filings so that they cannot continue to rise. The magnet block 19 gradually moves away from the iron filings by rotating, so that the iron filings fall into the debris groove 21 because they are no longer attracted. This can avoid the iron filings from having an adverse effect on the corrosion inhibitor coating, improve the coating effect, and at the same time reduce the wear of the iron filings on the sealing cup.

[0025] In one or more embodiments, the brush blade 20 extends in a direction parallel to the axis of the gathering and transport pipeline.

[0026] In one or more embodiments, the atomizing mobile vehicle includes: a cylindrical body 6 with both ends sealed by a sealing assembly and an internal partition 10, the partition 10 dividing the interior of the cylindrical body 6 into a liquid storage chamber 7 and a premixing chamber 11, wherein the liquid storage chamber 7 is used to store corrosion inhibitor, the bottom plate of the liquid storage chamber 7 is provided with an atomizing structure 9 for atomizing the corrosion inhibitor, the premixing chamber 11 is connected to an atomizing head 12 through a diverging channel 13, the cylindrical body 6 has an air duct 2 on the sealing assembly at the end away from the atomizing head 12 for airflow to enter the liquid storage chamber 7, and the partition 10 has a through hole at the top. The atomizing structure 9 includes a battery pack, an ultrasonic generator, and a piezoelectric ceramic sheet, the principle of which is: the piezoelectric ceramic sheet generates ultrasonic mechanical vibration under the action of a high-frequency oscillation signal transmitted from the ultrasonic generator, the mechanical vibration is transmitted to the corrosion inhibitor, causing the corrosion inhibitor to bulge, and cavitation occurs around the bulge. This cavitation breaks the interaction force of the corrosion inhibitor molecules, causing them to detach from their surface to form droplets, thus atomizing the corrosion inhibitor. It should be noted that the atomization structure 9 is existing technology, and its specific structure will not be described in detail here.

[0027] In one or more embodiments, the top of the liquid storage cavity 7 is provided with a filling port 8 for adding corrosion inhibitor into the liquid storage cavity 7.

[0028] The working principle of the atomizing mobile vehicle is briefly described below: Before use, the corrosion inhibitor is injected into the storage chamber 7 through the filling port 8, ensuring that the liquid level inside is lower than the air inlet 2 to prevent overflow. During coating, the coating device 100 for corrosion inhibitors in gathering and transportation pipelines described in this invention is placed into the gathering and transportation pipeline 1 to be coated, and gas is supplied to the gathering and transportation pipeline 1 to drive the atomizing mobile vehicle to move inside the pipeline. A small amount of gas enters the storage chamber 7 through the air inlet 2, and the atomized corrosion inhibitor is blown into the premixing chamber 11 through the through hole on the partition 10. The atomized corrosion inhibitor leaves the atomizing head 12 through the divergence channel 13 and adheres to the inner wall of the gathering and transportation pipeline 1.

[0029] In one or more embodiments, the sealing assembly includes: a cover plate 5, a sealing cup 3, and a guide plate 4 abutting between the cover plate 5 and the sealing cup 3. The cover plate 5 is fixedly connected to the cylinder 6 to seal the two ports of the cylinder 6. A threaded component passes sequentially through the sealing cup 3 and the guide plate 4 and enters the cover plate 5 to fix the cover plate 5, the sealing cup 3, and the guide plate 4 together. An air duct 2 is provided on the cover plate 5 away from the atomizing head 12 to allow airflow into the liquid storage chamber 7. The air duct 2 is located near the top of the cover plate 5 to prevent the corrosion inhibitor in the liquid storage chamber 7 from being discharged from the air duct 2. The diameter of the sealing cup 3 is the same as the inner diameter of the gathering and transportation pipe 1, and its top and bottom ends are in contact with the inner wall of the gathering and transportation pipe 1. Optionally, the threaded component can be a screw.

[0030] In one or more embodiments, the atomizing head 12 is provided with a plurality of diverging channels 13, which are arranged in a conical shape so that the atomized corrosion inhibitor can cover the inner wall of the gathering and transportation pipeline 1.

[0031] In one or more embodiments, the coating device 100 for corrosion inhibitors in gathering and transportation pipelines according to the present invention includes: two brush discs 16 spaced apart on the connecting rod 14. The two brush discs 16 are spaced apart to increase the distance between the bristles, while ensuring that the bristles of the brush discs 16 can clean the entire inner wall of the gathering and transportation pipeline 1.

[0032] In one or more embodiments, three magnet blocks 19 are evenly arranged on the inner wall of the roller 17 so that iron filings can be attracted by the roller 17 in a timely manner.

[0033] In one or more embodiments, the atomizing head 12 is further fitted with a sponge 22 on the surface near the cylinder 6. The sponge 22 is constructed in a ring shape and contacts the inner wall of the gathering and transportation pipe 1. After the atomized corrosion inhibitor adheres to the inner wall of the gathering and transportation pipe 1, the sponge 22 is used to coat the corrosion inhibitor adhering to the inner wall of the gathering and transportation pipe 1 so as to make the coating more uniform.

[0034] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A coating device for corrosion inhibitors in gathering and transportation pipelines, characterized in that, include: The device comprises a brush disc, an atomizing trolley with an atomizing head at one end, and a mounting plate disposed between the atomizing head and the brush disc and having rollers at the bottom. The atomizing head is connected to the brush disc via a connecting rod at the end away from the atomizing trolley. The mounting plate is fixedly connected to the side surface of the connecting rod. One or more magnets are fixed to the inner wall of the rollers, and a rubber sleeve is fitted on the outer wall. The mounting plate has a brush piece near the bottom that fits against the surface of the rubber sleeve. The mounting plate has a debris groove for receiving iron filings at the lower part of the brush piece.

2. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 1, characterized in that, The brush blades extend in a direction parallel to the axis of the gathering and transportation pipeline.

3. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 2, characterized in that, The inner wall of the roller is evenly arranged with three of the aforementioned magnet blocks.

4. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 1 or 2, wherein the atomizing mobile vehicle comprises: The cylinder has two sealed ports and an internal partition, which divides the interior of the cylinder into a liquid storage chamber and a premixing chamber. The bottom plate of the liquid storage chamber has an atomizing structure for atomizing the corrosion inhibitor. The premixing chamber is connected to the atomizing head through a diverging channel. The sealing assembly at the port of the cylinder away from the atomizing head has an air duct for airflow to enter the liquid storage chamber, and the partition has a through hole at the top.

5. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 4, characterized in that, The atomizing head is provided with multiple divergence channels, which are distributed in a cone shape.

6. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 4, characterized in that, The top of the liquid storage chamber has an injection port for adding corrosion inhibitor into the liquid storage chamber.

7. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 1 or 2, characterized in that, The sealing assembly includes: a cover plate, a sealing cup, and a guide plate abutting between the cover plate and the sealing cup. The cover plate is fixedly connected to the cylinder and is used to seal the two ports of the cylinder. A threaded component passes through the sealing cup and the guide plate in sequence and enters the cover plate to fix the cover plate, the sealing cup, and the guide plate together.

8. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 7, characterized in that, The air intake hole is provided on the cover plate away from the atomizing head, and the air intake hole is located near the top of the cover plate.

9. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 1 or 2, comprising: Two brush discs are spaced apart on the connecting rod.

10. The coating device for corrosion inhibitors in gathering and transportation pipelines according to claim 1 or 2, wherein the atomizing head is further fitted with a sponge on the surface near the cylinder, the sponge being configured in a ring shape and in contact with the inner wall of the gathering and transportation pipeline.

Images