A weldless sea pipe sacrificial anode device

Abstract

The utility model relates to the technical field of sea pipe protection, disclose a kind of welding-free sea pipe sacrificial anode device, comprising: fixed ring, two half-round plates of upper and lower butt joint are formed, and the butt joint of two half-round plates is fixed by bolt connection;Fixed seat, fixedly arranged on the half-round plate located above, one end is fixedly provided with connecting seat;Anode block, embedded in fixed seat, and closely adhere to connecting seat;Fixed band, it is above anode block, and two ends are downwardly bent and buckled with fixed seat.The utility model has the advantages of: welding-free, easy to replace, can withstand storm impact, and the protection ability to sea pipe is good.

Description

Technical Field

[0001] This utility model relates to the field of subsea pipeline protection technology, specifically to a welding-free sacrificial anode device for subsea pipelines. Background Technology

[0002] A sacrificial anode device is an electrochemical corrosion protection device used to protect metal structures from corrosion. It uses a more chemically reactive metal or alloy, such as zinc, aluminum, or magnesium alloy, as the anode, connected to the protected metal structure via wires or directly bonded, and both are placed in an electrolyte environment such as soil or seawater. Common protected metal structures include pipes, storage tanks, and ship hulls. During operation, due to the higher reactivity of the anode material, it preferentially undergoes oxidation and gradually dissolves, continuously releasing electrons that flow to the protected metal. This keeps the protected metal in a state of electron surplus, thus inhibiting its own oxidation and corrosion reactions. As the anode is continuously consumed, periodic replacement with a new anode maintains the corrosion protection effect. It is widely used in petrochemical, marine engineering, and municipal pipeline networks.

[0003] The current method of fixing sacrificial anodes on subsea pipelines using welding has significant drawbacks. The high temperatures during welding can damage the anti-corrosion layer on the pipeline surface, creating exposed areas that become corrosion initiation points and exacerbate the risk of corrosion. The welding process requires specialized personnel to operate at sea, and is greatly affected by wind, waves, and seawater impacts, resulting in low construction efficiency and difficulty in quality control. Problems such as incomplete welds and missed welds are common, leading to unstable anode fixation and affecting the anti-corrosion effect. Furthermore, welding causes thermal stress damage to the pipeline itself, and long-term exposure to seawater pressure and current impacts may cause the pipeline to crack. When replacing the anode later, removing the weld points can further damage the pipeline structure, increasing maintenance costs and safety hazards. Utility Model Content

[0004] To solve the above-mentioned problems, this utility model proposes a welding-free sacrificial anode device for subsea pipelines that is easy to replace, can withstand the impact of wind and waves, and provides good protection for subsea pipelines.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a weld-free sacrificial anode device for subsea pipelines, comprising:

[0006] The fixing ring consists of two semicircular plates that are joined together vertically, and the two semicircular plates are fixed together by bolts.

[0007] A fixed base is fixedly mounted on the upper semicircular plate, and a connecting base is fixedly mounted at one end of the base;

[0008] The anode block is embedded in the fixing seat and fits tightly against the connecting seat;

[0009] The fixing strap is located above the anode block, with both ends bent downwards and fastened to the fixing seat.

[0010] Furthermore, several adhesive strips are fixedly provided on the inner wall of the semi-circular plate.

[0011] Furthermore, each of the two semicircular plates is integrally formed with an L-shaped fastener and a T-shaped fastener at its end. The L-shaped fastener has a through hole for the T-shaped fastener to be inserted into. The end of the T-shaped fastener passes through the through hole and is connected and fixed to the L-shaped fastener by bolts.

[0012] Furthermore, L-shaped limiting plates extend upward from the four corners of the anode block, and the four corners of the anode block contact the L-shaped limiting plates.

[0013] Furthermore, two fixing straps are symmetrically provided at both ends of the fixing base, and buckles are integrally formed at both ends. The side wall of the fixing base is provided with a socket for matching buckles.

[0014] Compared with existing technologies, this invention has the following advantages: During assembly, the upper and lower semicircular plates are quickly aligned using specific connectors and then fixed with bolts, eliminating the need for welding and simplifying the installation process. The fixing strap above the anode block is fastened to the fixing seat via buckles, making disassembly simple. Furthermore, the anode block is embedded in the fixing seat, facilitating easy positioning during replacement. The rubber strip on the inner wall of the semicircular plate enhances friction with the subsea pipeline, preventing slippage and buffering vibrations. Combined with the limiting structures at the four corners of the anode block and the double fixing of the fixing strap, component displacement is prevented. The limiting structure ensures that the anode block and the connecting seat are always tightly fitted, ensuring the stable operation of the sacrificial anode and effectively protecting the subsea pipeline. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 This is the front view of this utility model;

[0018] Figure 4 This is a side view of the present invention.

[0019] As shown in the figure: 1. Semicircular plate; 2. Bolt; 3. Fixing seat; 4. Connecting seat; 5. Anode block; 6. Fixing strap; 7. L-shaped fastener; 8. T-shaped fastener; 9. L-shaped limiting plate; 10. Buckle. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Combined with appendix Figure 1 Appendix Figure 3A welding-free sacrificial anode device for subsea pipelines includes: a fixing ring, which is composed of two semicircular plates 1 joined together vertically. Several rubber strips are fixed on the inner wall of the semicircular plates 1, which can enhance the friction between the fixing ring and the subsea pipeline, prevent the device from sliding on the subsea pipeline, and at the same time, the rubber strips can buffer the impact of subsea pipeline vibration on the device, and improve the stability of the device after installation.

[0022] Combined with appendix Figure 1 Appendix Figure 3 The two semicircular plates 1 are connected and fixed at their joints by bolts 2. The ends of the two semicircular plates 1 are respectively integrally formed with an L-shaped fixing member 7 and a T-shaped fixing member 8. The L-shaped fixing member 7 has a through hole for the T-shaped fixing member 8 to be inserted. The end of the T-shaped fixing member 8 passes through the through hole and is connected and fixed to the L-shaped fixing member 7 by bolts 2. This allows for quick alignment of the joint positions of the two semicircular plates 1 and then fixing with bolts 2, simplifying the assembly process of the fixing ring and improving installation efficiency.

[0023] Combined with appendix Figure 1 Appendix Figure 3 Appendix Figure 4 A fixed base 3 is fixedly mounted on the upper semi-circular plate 1, and a connecting base 4 is fixedly mounted on one end of the plate. An anode block 5 is embedded in the fixed base 3 and is tightly fitted with the connecting base 4. An L-shaped limiting plate 9 extends upward from the four corners of the anode block 5. The four corners of the anode block 5 contact the L-shaped limiting plate 9. The L-shaped limiting plate 9 can limit the four corners of the anode block 5 to prevent the anode block 5 from shifting within the fixed base 3, ensuring that the anode block 5 and the connecting base 4 are always tightly fitted, and ensuring that the sacrificial anode function is stably performed.

[0024] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 A fixing strap 6 is positioned above the anode block 5, with both ends bent downwards to fasten to the fixing base 3. Two fixing straps 6 are symmetrically arranged at both ends of the fixing base 3, each with an integrally formed buckle 10. The side wall of the fixing base 3 has a matching slot for the buckle 10. By fastening the buckle 10 to the slot of the fixing base 3, the anode block 5 can be firmly fixed from above. The fastening structure is simple to operate and facilitates subsequent replacement and maintenance of the anode block 5.

[0025] The specific implementation method of this utility model is as follows: First, attach the two semicircular plates 1 to the outer wall of the subsea pipeline respectively, insert the T-shaped fixing member 8 of one semicircular plate 1 into the through hole of the L-shaped fixing member 7 of the other semicircular plate 1, quickly align the docking position, and then connect and fix the two semicircular plates 1 with bolts 2 to form a fixing ring; at this time, the rubber strip on the inner wall of the semicircular plate 1 is tightly attached to the subsea pipeline, which enhances the friction and buffers the vibration. Next, embed the anode block 5 into the fixing seat 3 fixed in the upper semicircular plate 1, ensuring that the four corners of the anode block 5 are in contact with the L-shaped limiting plate 9, so that the anode block 5 is tightly attached to the connecting seat 4 at one end of the fixing seat 3; finally, take two fixing straps 6 and place them on top of the anode block 5, align the buckles 10 at both ends of the fixing straps 6 with the insertion holes on the side wall of the fixing seat 3 and fasten them, and firmly fix the anode block 5 from above. Use the connecting wire to connect the connecting seat 4 to the subsea pipeline to complete the installation of the entire device. When replacing the anode block 5, simply unfasten the buckle 10, remove the fixing strap 6, take out the old anode block 5, and then insert the new anode block 5 and fasten the fixing strap 6 as described above.

[0026] In the description of this utility model, it should be noted that, 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 connection; for those skilled in the art, the specific meaning of the above term in this utility model can be understood according to the specific circumstances.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A weld-free sacrificial anode device for subsea pipelines, characterized in that, include: The fixing ring is composed of two semi-circular plates (1) joined together, and the two semi-circular plates (1) are connected and fixed by bolts (2) at the joint. The fixed base (3) is fixedly mounted on the upper semi-circular plate (1), and a connecting base (4) is fixedly mounted on one end of it; The anode block (5) is embedded in the fixing seat (3) and is tightly fitted with the connecting seat (4); The fixing strap (6) is located above the anode block (5), with both ends bent downwards and fastened to the fixing seat (3).

2. The welding-free sacrificial anode device for subsea pipelines according to claim 1, characterized in that: Several adhesive strips are fixedly provided on the inner wall of the semi-circular plate (1).

3. The welding-free sacrificial anode device for subsea pipelines according to claim 1, characterized in that: The two semicircular plates (1) are integrally formed with an L-shaped fastener (7) and a T-shaped fastener (8) at their ends. The L-shaped fastener (7) has a through hole for the T-shaped fastener (8) to be inserted. The end of the T-shaped fastener (8) passes through the through hole and is connected and fixed to the L-shaped fastener (7) by a bolt (2).

4. The weld-free sacrificial anode device for subsea pipelines according to claim 1, characterized in that: The anode block (5) has L-shaped limiting plates (9) extending upward at its four corners, and the four corners of the anode block (5) are in contact with the L-shaped limiting plates (9).

5. The weld-free sacrificial anode device for subsea pipelines according to claim 1, characterized in that: Two fixing straps (6) are symmetrically provided at both ends of the fixing seat (3), and buckles (10) are integrally formed at both ends. The side wall of the fixing seat (3) is provided with a matching buckle (10).

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