Anti-biofouling device for offshore drilling platforms

Abstract

The utility model discloses a kind of marine drilling platform is used to prevent marine organism attachment device, it is related to marine drilling platform technical field, to solve the technical problem that current mode is difficult to clean the marine organism attached on pile leg, including anti-attachment scraper and the lifting moving mechanism of anti-attachment scraper inside setting and the cleaning mechanism of anti-attachment scraper upper setting, the lifting moving mechanism includes air bag set in anti-attachment scraper and the installation ring between setting in limiting rod, the lifting roller that is combined with marine drilling platform pile leg is rotatably installed on the mounting plate, the cleaning mechanism includes the sliding block of array setting and the cleaning plate of sliding block upper setting. The utility model has the advantages that marine organism on pile leg can be mechanized cleaned, without manual underwater and water operation, cleaning efficiency is high, labor intensity and risk are low, scraper design is combined with pile leg and guide organism slide, cleaning mechanism borrows sea wave to clean scraper, avoid organism accumulation, guarantee device long-term stable operation, maintain the advantages that platform is balanced.

Description

Technical Field

[0001] This utility model relates to the field of marine drilling platform technology, and more specifically, to a device for preventing marine organism attachment for marine drilling platforms. Background Technology

[0002] Offshore drilling platforms are core infrastructure for offshore oil and gas exploration and development, and can be described as "powerful tools for deep-sea energy extraction." They integrate drilling operations, power and communication, navigation and safety, and personnel living facilities, serving as comprehensive offshore operational bases far from land. As key equipment for deep-sea energy development, their core functions are drilling wells, collecting geological data, and assessing oil and gas reserves, providing precise support for subsequent extraction.

[0003] Floating offshore drilling platforms rely on floating bridges at the base of their legs to maintain their buoyancy at sea. However, the submersion of the legs and the presence of waves attract marine organisms that attach to them, increasing their weight, disrupting the platform's balance, and reducing structural stability. Furthermore, the metabolic waste and biofilms of these organisms accelerate the electrochemical corrosion of the leg steel, impacting the structure's lifespan. Current methods primarily involve electrolyzing seawater to stun and kill these organisms, but even after they are mostly dead, some still adhere, requiring manual underwater and surface cleaning. Therefore, we propose an anti-biofouling device for offshore drilling platforms. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a device for preventing marine organisms from attaching to offshore drilling platforms, so as to solve the technical problem that it is difficult to clean marine organisms attached to the legs of the piles using current methods.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an anti-marine organism attachment device for marine drilling platforms, including an anti-attachment scraper, a lifting and moving mechanism installed inside the anti-attachment scraper, and a cleaning mechanism installed on the anti-attachment scraper; The anti-adhesion scraper is arranged in a ring, and the inner wall of the anti-adhesion scraper is provided with a limit rod array; The lifting and moving mechanism includes an airbag disposed in the anti-attachment scraper and an installation ring disposed between the limit rods. Electric push rods are symmetrically embedded in the installation ring. An installation plate is provided at the end of the piston rod of the electric push rod. Lifting rollers that fit against the legs of the offshore drilling platform are rotatably mounted on the installation plate. The cleaning mechanism includes an array of sliding blocks and a cleaning plate mounted on the sliding blocks, with an arc-shaped connecting rod between the sliding blocks.

[0006] Preferably, the inner wall of the anti-scraping scraper is provided with a positioning groove, the limiting rod is U-shaped, and the limiting rod and the positioning groove form a receiving cavity.

[0007] Preferably, the airbag is arranged in a ring shape, the airbag is located in the receiving cavity, the airbag is provided with an air supply pipe, and the anti-attachment scraper has a hole for the air supply pipe to extend out.

[0008] Preferably, the mounting plate is U-shaped, the lifting roller is rotatably installed in the U-shaped opening of the mounting plate, and a motor for driving the lifting roller is provided on the side end of the mounting plate.

[0009] Preferably, the anti-attachment scraper includes a connecting part and scraper portions provided at the top and bottom of the connecting part. The thickness of the scraper portion gradually decreases along the long axis direction. The cross-section of the scraper portion is an upwardly curved arc. The end of the scraper portion is close to the outer surface of the pile leg of the offshore drilling platform.

[0010] Preferably, the outer surface of the connecting part of the anti-adhesion scraper is provided with a sliding groove, the sliding block is slidably disposed in the sliding groove, the cleaning plate includes a mounting part disposed on the sliding block and a cleaning part disposed on the mounting part, the cleaning part is arranged in an arc shape along the long axis direction, and the bottom surface of the cleaning part is in contact with the outer surface of the scraper part.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model designs a structure that combines a ring-shaped anti-attachment scraper with a lifting and moving mechanism. The scraper part of the ring-shaped anti-attachment scraper adopts an arc-shaped design with a cross-section that gradually thins along the long axis and curves upwards. It can closely fit the outer surface of the pile leg. When it moves up and down along the pile leg under the drive of the lifting and moving mechanism, it can efficiently peel off the attached marine organisms. The arc-shaped structure can guide the biological residue to slide to the outside to avoid accumulation. In conjunction with the lifting mechanism, the device moves up and down along the pile leg to ensure that the device can cover different height positions of the pile leg. It can complete the mechanized cleaning of marine organisms without manual intervention, which greatly improves the cleaning efficiency, reduces the intensity of manual labor and the risk of operation. It solves the problem that the existing electrolysis of seawater cannot completely remove the marine organisms attached to the pile leg and requires subsequent manual underwater and above-water cleaning.

[0012] 2. This utility model also solves the problem that biological residues easily remain on the surface of the scraper during the scraping of marine organisms by the anti-attachment scraper, and the accumulation of these residues affects the normal operation of the device. The sliding block of the cleaning mechanism is slidably set in the sliding groove of the anti-attachment scraper connection part. The cleaning part of the cleaning plate is arc-shaped and closely fits the outer surface of the scraper part. Utilizing the natural force of the wave impact, the cleaning plate can be pushed to make a circular motion along the sliding groove, simultaneously scraping away the marine organisms remaining on the surface of the scraper part. The arc-shaped cleaning part can also throw the biological residues outward during the movement. The arc-shaped connecting rod between the sliding blocks ensures the synchronicity of the movement of multiple cleaning plates, achieving comprehensive cleaning of the outer surface of the scraper part. This avoids problems such as reduced scraping effect and obstructed device operation caused by residue accumulation, further ensuring the long-term stable working performance of the anti-marine organism attachment device. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the cleaning mechanism structure of this utility model; Figure 4 This is a cross-sectional view of the anti-scraping blade of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the anti-scraping scraper of this utility model; Figure 6 This is a schematic diagram of the lifting and moving mechanism of this utility model.

[0014] The following are the labels in the diagram: 101, anti-adhesion scraper; 1011, connecting part; 1012, sliding groove; 1013, scraper part; 102, limit rod; 200, lifting and moving mechanism; 201, airbag; 202, mounting ring; 203, electric push rod; 204, mounting plate; 205, lifting roller; 206, motor; 300, cleaning mechanism; 301, connecting rod; 302, sliding block; 303, cleaning plate; 3031, mounting part; 3032, cleaning part. Detailed Implementation

[0015] like Figures 1 to 6 As shown, the present invention relates to an anti-marine organism attachment device for a marine drilling platform, comprising an anti-attachment scraper 101, a lifting and moving mechanism 200 disposed within the anti-attachment scraper 101, and a cleaning mechanism 300 disposed on the anti-attachment scraper 101. The anti-attachment scraper 101 is arranged in a ring, and the inner wall of the anti-attachment scraper 101 is arrayed with limit rods 102; The lifting and moving mechanism 200 includes an airbag 201 disposed in the anti-attachment scraper 101 and an installation ring 202 disposed between the limit rods 102. Electric push rods 203 are symmetrically embedded in the installation ring 202. An installation plate 204 is provided at the end of the piston rod of the electric push rod 203. Lifting rollers 205 that are in contact with the legs of the offshore drilling platform are rotatably mounted on the installation plate 204. The cleaning mechanism 300 includes an array of sliding blocks 302 and cleaning plates 303 mounted on the sliding blocks 302. An arc-shaped connecting rod 301 is provided between the sliding blocks 302. This invention enables mechanized cleaning of marine organisms from the platform legs, eliminating the need for manual underwater or surface operations. It boasts high cleaning efficiency, low labor intensity, and low risk. The scraper design conforms to the platform legs and guides the organisms to slide off. The cleaning mechanism 300 utilizes ocean waves to clean the scraper, preventing organism accumulation, ensuring long-term stable operation of the device, and maintaining platform balance.

[0016] Specifically, the inner wall of the anti-scraper 101 is provided with a positioning groove, and the limiting rod 102 is U-shaped, forming a receiving cavity between the limiting rod 102 and the positioning groove. The limiting rod 102 plays a positioning and guiding role for the mounting ring 202 in the lifting and moving mechanism 200, preventing the mounting ring 202 from shifting during movement. At the same time, the receiving cavity provides a stable installation space for the airbag 201, ensuring the stable operation of the lifting and moving mechanism 200. Furthermore, the airbag 201 is arranged in a ring shape and is located within the receiving cavity. An air supply pipe is provided on the airbag 201, and the anti-fouling scraper 101 has holes for the air supply pipe to extend out. When the device is underwater and needs to rise, the airbag 201 can be inflated and moved upwards in conjunction with the lifting rollers 205.

[0017] It is worth noting that the mounting plate 204 is U-shaped, and the lifting roller 205 is rotatably installed within the U-shaped opening of the mounting plate 204. A motor 206 for driving the lifting roller 205 is located on the side end of the mounting plate 204. By extending and retracting the piston rod of the electric push rod 203, the contact force between the mounting plate 204 and the lifting roller 205 and the pile leg can be adjusted to ensure that the lifting roller 205 can fit tightly against the surface of the pile leg and avoid slippage during movement. The operation of the motor 206 causes the lifting roller 205 to rotate, which can make the device rise or fall along the pile leg, allowing the anti-attachment scraper 101 to move smoothly up and down along the pile leg to scrape off the marine organisms attached to the pile leg, thus achieving cleaning at different heights of the pile leg.

[0018] It is worth mentioning that the anti-attachment scraper 101 includes a connecting part 1011 and a scraper part 1013 provided at the top and bottom of the connecting part 1011. The thickness of the scraper part 1013 gradually decreases along the long axis direction. The cross section of the scraper part 1013 is an upwardly curved arc. The end of the scraper part 1013 is close to the outer surface of the pile leg of the offshore drilling platform. The gradually thinning thickness of the scraper section 1013 along its long axis ensures its strength while reducing the contact area between the end of the scraper section 1013 and the surface of the pile leg. This enhances the scraping force of the scraper section 1013 on marine organisms, making it easier to peel off the marine organisms attached to the pile leg. When the anti-attachment scraper 101 moves up and down along the pile leg, the scraper section 1013 directly contacts the surface of the pile leg, which can scrape off the marine organisms attached to the pile leg. The cross-section of the scraper section 1013 is an upwardly curved arc, which allows the end of the scraper section 1013 to fit more tightly against the surface of the pile leg. At the same time, the arc structure can guide the scraped marine organism residue to slide outward, reducing the accumulation of scraped marine organisms on the scraper section 1013.

[0019] It is worth noting that the outer surface of the connecting part 1011 of the anti-adhesion scraper 101 is provided with a sliding groove 1012, the sliding block 302 is slidably disposed in the sliding groove 1012, and the cleaning plate 303 includes a mounting part 3031 disposed on the sliding block 302 and a cleaning part 3032 disposed on the mounting part 3031. The cleaning part 3032 is arranged in an arc shape along the long axis direction, and the bottom surface of the cleaning part 3032 is in contact with the outer surface of the scraper part 1013. The sliding groove 1012 provides a sliding track for the sliding block 302, limiting the movement direction of the sliding block 302. Since the cleaning part 3032 is arc-shaped along its long axis, when it is underwater, the impact of the waves can push the cleaning part 3032, thereby causing several cleaning plates 303 to move in a ring. Since the bottom surface of the cleaning part 3032 is in contact with the outer surface of the scraper part 1013, it can effectively scrape off the marine organisms on the surface of the scraper part 1013, avoiding accumulation that affects the normal operation of the device. Secondly, the arc-shaped arrangement of the cleaning part 3032 can also throw marine organisms to the outside during movement, increasing the cleaning effect of the cleaning plate 303 on the anti-attachment scraper 101.

[0020] Working Principle: This embodiment provides an anti-marine organism attachment device for offshore drilling platforms. During the installation of the platform's legs, this device is fitted onto the legs. The position of the mounting plate 204 is adjusted by extending and retracting the piston rod of the electric push rod 203, ensuring that the lifting rollers 205 inside the U-shaped opening of the mounting plate 204 are tightly fitted against the outer surface of the leg. This ensures sufficient friction between the lifting rollers 205 and the leg to prevent slippage during movement. In use, the motor 206 on the side of the mounting plate 204 is started. The motor 206 drives the lifting rollers 205 to rotate, causing the entire device to move up and down along the leg. When underwater and needing to rise, an air pump installed on the platform inflates the air supply pipe, which in turn inflates the annular airbag 201 within the cavity formed by the positioning groove on the inner wall of the anti-attachment scraper 101 and the U-shaped limiting rod 102. The buoyancy generated by the expansion of the airbag 201 assists in the ascent, reducing the load on the motor 206 and improving the smoothness of lifting and lowering. During the lifting and lowering process, the scraper sections 1013 at the top and bottom of the connecting part 1011 of the anti-attachment scraper 101 directly contact the surface of the pile leg. Because the cross-section of the scraper section 1013 gradually thins along its long axis and has an upwardly curved arc shape, it ensures that the scraper section 101... The structure of the 3-section provides structural strength while reducing the contact area with the pile leg to enhance scraping force, effectively removing marine organisms attached to the pile leg. Simultaneously, the arc-shaped structure guides the scraped marine organisms to slide outwards, reducing accumulation on the surface of the scraper section 1013. The sliding block 302, slidably disposed within the sliding groove 1012 on the outer surface of the anti-attachment scraper 101 connecting part 1011, drives the cleaning plate 303 to move in a circular motion along the sliding groove 1012 under the impact of waves. The cleaning part 3032 of the cleaning plate 303 is arc-shaped along its long axis, and its bottom surface is tightly fitted to the outer surface of the scraper section 1013. During the circular motion... The device can scrape off marine organisms remaining on the surface of the scraper section 1013, preventing their accumulation from affecting the subsequent operation of the device. At the same time, the arc-shaped cleaning section 3032 can also throw the scraped marine organisms outward during movement, further improving the cleaning effect on the scraper section 1013. Furthermore, the sliding blocks 302 are connected by an arc-shaped connecting rod 301, which can ensure the synchronicity of the movement of multiple sliding blocks 302 and cleaning plates 303, ensuring that the cleaning range covers the entire outer surface of the scraper section 1013. The entire process does not require manual cleaning by personnel underwater or above water, thus achieving efficient removal of marine organisms from the pile legs and cleaning and maintenance of the device itself.

[0021] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A device for preventing marine organism attachment on an offshore drilling platform, characterized in that, It includes an anti-attachment scraper (101), a lifting and moving mechanism (200) provided inside the anti-attachment scraper (101), and a cleaning mechanism (300) provided on the anti-attachment scraper (101). The anti-attachment scraper (101) is arranged in a ring, and the inner wall of the anti-attachment scraper (101) is provided with limit rods (102). The lifting and moving mechanism (200) includes an airbag (201) disposed in the anti-attachment scraper (101) and an installation ring (202) disposed between the limiting rods (102). Electric push rods (203) are symmetrically embedded in the installation ring (202). An installation plate (204) is provided at the end of the piston rod of the electric push rod (203). Lifting rollers (205) that fit against the legs of the offshore drilling platform are rotatably mounted on the installation plate (204). The cleaning mechanism (300) includes an array of sliding blocks (302) and a cleaning plate (303) disposed on the sliding blocks (302), and an arc-shaped connecting rod (301) is disposed between the sliding blocks (302).

2. The anti-marine organism attachment device for a marine drilling platform according to claim 1, characterized in that, The inner wall of the anti-scraping scraper (101) is provided with a positioning groove, and the limiting rod (102) is U-shaped. The limiting rod (102) and the positioning groove form a receiving cavity.

3. The anti-marine organism attachment device for a marine drilling platform according to claim 2, characterized in that, The airbag (201) is arranged in a ring shape and is located in the receiving cavity. An air supply pipe is provided on the airbag (201), and a hole is provided on the anti-attachment scraper (101) for the air supply pipe to extend out.

4. The anti-marine organism attachment device for a marine drilling platform according to claim 3, characterized in that, The mounting plate (204) is U-shaped, and the lifting roller (205) is rotatably installed in the U-shaped opening of the mounting plate (204). The side end of the mounting plate (204) is provided with a motor (206) for driving the lifting roller (205).

5. The anti-marine organism attachment device for a marine drilling platform according to claim 4, characterized in that, The anti-attachment scraper (101) includes a connecting part (1011) and a scraper part (1013) provided at the top and bottom of the connecting part (1011). The thickness of the cross section of the scraper part (1013) gradually decreases along the long axis direction. The cross section of the scraper part (1013) is an upwardly curved arc. The end of the scraper part (1013) is close to the outer surface of the pile leg of the offshore drilling platform.

6. The anti-marine organism attachment device for a marine drilling platform according to claim 5, characterized in that, The outer surface of the connecting part (1011) of the anti-adhesion scraper (101) is provided with a sliding groove (1012), the sliding block (302) is slidably disposed in the sliding groove (1012), the cleaning plate (303) includes a mounting part (3031) disposed on the sliding block (302) and a cleaning part (3032) disposed on the mounting part (3031), the cleaning part (3032) is arc-shaped along the long axis direction, and the bottom surface of the cleaning part (3032) is in contact with the outer surface of the scraper part (1013).

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