A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment
By setting a double-layer fiber-reinforced plastic protective shell and an EPDM rubber sealing ring on the seabed sacrificial anode, the problems of poor protection, weak connection and poor sealing performance in the prior art are solved, and better protection and longer service life are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAOZUO HUAYU MAGNESIUM CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-31
AI Technical Summary
Existing sacrificial anode protective shells have simple structures, poor protective effects, weak connections, poor sealing performance, and are prone to loosening and seawater infiltration, affecting their service life.
It adopts a double-layer protective shell structure, using a first protective shell and a second protective shell made of fiber-reinforced plastic, combined with a manual thumb lock, locking mounting base, bolts and EPDM rubber sealing rings to enhance connection and sealing performance.
It improves the protective effect of sacrificial anodes, resists corrosion from the seabed environment, prevents loosening and seawater infiltration, and extends service life.
Smart Images
Figure CN224578351U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine engineering corrosion protection technology, specifically to a ring-shaped zinc alloy sacrificial anode suitable for seabed environments. Background Technology
[0002] In marine engineering, metal structures are constantly exposed to the complex corrosive environment of seawater, making them highly susceptible to corrosion damage. This not only reduces the strength and stability of the structure but can also lead to safety accidents and increase maintenance costs. Sacrificial anode protection technology is one of the commonly used anti-corrosion methods in marine engineering, which protects the metal structure by corroding the sacrificial anode material.
[0003] Chinese utility model patent CN223016979U discloses a ring-shaped zinc alloy sacrificial anode suitable for seabed environments, comprising a base, a zinc alloy sacrificial anode mounted on the base, and a controller. The zinc alloy sacrificial anode includes two anode blocks arranged symmetrically in a semi-ring shape. A semi-ring-shaped protective shell is fitted around the outer side of each anode block. Extended shell sleeves are provided on both sides of the protective shell, and the two extended shell sleeves are connected by connecting posts. A temperature sensor is installed inside the protective shell, and the output of the temperature sensor is connected to the controlled end of the controller. A ventilated cover is also installed between the anode blocks and the protective shell. This utility model, a ring-shaped zinc alloy sacrificial anode suitable for seabed environments, prevents the sacrificial anode from being consumed prematurely due to external environmental influences by setting a protective shell on its surface. Simultaneously, the temperature sensor allows for timely detection of the seabed temperature, preventing damage to the zinc alloy sacrificial anode caused by temperature changes and ensuring effective protection.
[0004] However, existing sacrificial anodes for the seabed have some shortcomings in use. Some sacrificial anodes have simple protective shell structures with poor protective effects, making them unable to withstand the corrosion of the anode block by the complex seabed environment. In terms of installation, the connections are not secure enough, easily loosening and affecting the normal operation of the sacrificial anode. At the same time, the sealing performance is poor, allowing seawater to easily seep into the interior, reducing the service life of the sacrificial anode. Therefore, a ring-shaped zinc alloy sacrificial anode suitable for the seabed environment is needed to solve the above problems. Utility Model Content
[0005] This invention provides a ring-shaped zinc alloy sacrificial anode suitable for seabed environments, thereby solving the problems in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a ring-shaped zinc alloy sacrificial anode suitable for seabed environments, comprising a base, a first protective shell, and a second protective shell. Bolts are provided on the front side of the base near the left and right sides. A slot is provided on the inner rear end wall of the base near the bottom. A limit strip is fixedly installed on the rear end of the second protective shell near the bottom. A vent is provided inside the second protective shell, and an anode block is provided inside the vent. Sealing rings are fixedly installed on the front side of the second protective shell near the periphery. Locking mounting seats are fixedly installed on the rear end of the second protective shell near the left and right sides. Manual thumb lockers are provided on the front side of the first protective shell near the left and right sides.
[0007] Furthermore, during installation, the outer surface of the vent cover is tightly fitted against the interior of the second protective shell.
[0008] Furthermore, during installation, the outer surface of the anode block is pressed tightly against the inside of the vent shroud.
[0009] Furthermore, during installation, the outer surface of the limit strip engages with the inner surface of the slot.
[0010] Furthermore, threaded grooves are provided on the left and right sides of the front of the first protective shell near the bottom. During installation, the outer surfaces of the multiple bolts near the rear end are threadedly connected to the threaded grooves on the first protective shell.
[0011] Furthermore, both the first and second protective shells are made of fiber-reinforced plastic (FRP).
[0012] Furthermore, the sealing ring is made of ethylene propylene diene monomer (EPDM) rubber.
[0013] Furthermore, the structures on the first protective shell and the second protective shell are identical, and the first protective shell and the second protective shell are symmetrically arranged.
[0014] Compared with the prior art, this utility model provides a ring-shaped zinc alloy sacrificial anode suitable for seabed environments, which has the following beneficial effects: 1. This annular zinc alloy sacrificial anode, suitable for seabed environments, comprises a first protective shell, a second protective shell, a manual thumb lock, a locking mounting base, and a sealing ring. Both the first and second protective shells are made of fiber-reinforced plastic (FRP), which possesses excellent corrosion resistance and mechanical strength, effectively protecting the internal anode block from seabed erosion. During installation, the manual thumb lock connects to the locking mounting base, strengthening the connection between the first and second protective shells. Bolts then connect the base to the first protective shell, further reinforcing the connection between each shell and the base, resulting in a more secure overall installation and preventing loosening. By setting a sealing ring around the front perimeter of the second protective shell, and the sealing ring material is EPDM rubber, which has excellent weather resistance, ozone resistance and chemical corrosion resistance, the sealing ring can effectively enhance the sealing effect between the first and second protective shells when they are closed, prevent seawater from seeping into the interior and improve the service life of the sacrificial anode. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural diagram of the internal structure of the second protective shell of this utility model.
[0016] In the diagram: 1. Base; 101. Slot; 2. First protective shell; 201. Manual thumb lock; 3. Bolt; 4. Second protective shell; 401. Anode block; 402. Limiting strip; 403. Locking mounting base; 5. Vent cover; 6. Sealing ring. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-2This utility model discloses a ring-shaped zinc alloy sacrificial anode suitable for seabed environments, including a base 1, a first protective shell 2, and a second protective shell 4. Bolts 3 are provided on the front of the base 1 near the left and right sides. A slot 101 is provided on the inner rear end wall of the base 1 near the bottom. A limit strip 402 is fixedly installed on the rear end of the second protective shell 4 near the bottom. A vent 5 is provided inside the second protective shell 4. An anode block 401 is provided inside the vent 5. Sealing rings 6 are fixedly installed on the front of the second protective shell 4 near the periphery. Locking mounting seats 403 are fixedly installed on the rear end of the second protective shell 4 near the left and right sides. A manual thumb locker 201 is provided on the front of the first protective shell 2 near the left and right sides.
[0019] Specifically, during installation, the outer surface of the vent 5 is tightly fitted to the inside of the second protective shell 4.
[0020] Specifically, during installation, the outer surface of the anode block 401 is pressed tightly against the inside of the vent shroud 5.
[0021] Specifically, during installation, the outer surface of the limit strip 402 is in active engagement with the inside of the slot 101.
[0022] Specifically, threaded grooves are provided on the left and right sides of the front of the first protective shell 2 near the bottom. During installation, the outer surfaces of multiple bolts 3 near the rear end are threadedly connected to the threaded grooves on the first protective shell 2.
[0023] Specifically, both the first protective shell 2 and the second protective shell 4 are made of fiber reinforced plastic (FRP).
[0024] Specifically, the sealing ring 6 is made of ethylene propylene diene monomer (EPDM) rubber.
[0025] Specifically, the structures on the first protective shell 2 and the second protective shell 4 are the same, and the first protective shell 2 and the second protective shell 4 are symmetrically arranged.
[0026] During installation, the outer surface of the vent shroud 5 is tightly fitted against the inside of the second protective shell 4. Then, the outer surface of the anode block 401 is fitted tightly against the inside of the vent shroud 5. The vent shroud 5 ensures contact between the anode block 401 and seawater, while also providing some support. The first protective shell 2 is then installed in the same manner, with the vent shroud 5 and anode block 401 also installed inside it. Next, the second protective shell 4 is placed inside the base 1, and the limiting strip 402 is movably engaged with the inside of the slot 101. The engagement of the limiting strip 402 and the slot 101 provides initial positioning for the second protective shell 4. Afterward, the first protective shell 2 is placed inside the base 1 and connected to the locking mounting base 403 via the manual thumb lock 201, thereby strengthening the connection between the first protective shell 2 and the second protective shell 4. A sealing ring 6 is placed between the first protective shell 2 and the second protective shell 4 to enhance the sealing effect and prevent seawater from entering. The base 1 is then connected to the first protective shell 2 via bolts 3. Specifically, the outer surface of the bolt 3, near its rear end, is threaded into the threaded groove on the first protective shell 2, thereby strengthening the connection between the first protective shell 2 and the second protective shell 4 and the base 1. During use, the anode block 401 is protected by the first and second protective shells 2 and 4. The anode block 401 acts as a sacrificial anode, protecting the seabed metal structure through its own corrosion. The vent 5 ensures full contact between the anode block 401 and seawater, guaranteeing the proper functioning of the sacrificial anode.
[0027] In summary, this annular zinc alloy sacrificial anode suitable for seabed environments comprises a first protective shell 2, a second protective shell 4, a manual thumb lock 201, a locking mounting base 403, and a sealing ring 6. Both the first and second protective shells are made of fiber-reinforced plastic (FRP), which possesses excellent corrosion resistance and mechanical strength, effectively protecting the internal anode block 401 from seabed erosion. During installation, the manual thumb lock 201 connects to the locking mounting base 403, strengthens the connection between the first and second protective shells 2 and 4, and the bolts 3 connect the base 1 to the first protective shell 2, further enhancing the connection between the first and second protective shells 2 and 4 and the base 1. This ensures a more secure overall installation and prevents loosening. By setting a sealing ring 6 around the front perimeter of the second protective shell 4, and the sealing ring 6 is made of EPDM rubber, which has excellent weather resistance, ozone resistance and chemical corrosion resistance, the sealing ring 6 can effectively enhance the sealing effect between the first protective shell 2 and the second protective shell 4 when they are closed, prevent seawater from seeping into the interior and improve the service life of the sacrificial anode.
[0028] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment comprising a base (1), a first protective shell (2) and a second protective shell (4), characterised in that: Bolts (3) are provided on the front of the base (1) near the left and right sides. A slot (101) is provided on the inner rear wall of the base (1) near the bottom. A limit strip (402) is fixedly installed on the rear end of the second protective shell (4) near the bottom. A ventilator (5) is provided inside the second protective shell (4). An anode block (401) is provided inside the ventilator (5). A sealing ring (6) is fixedly installed on the front of the second protective shell (4) near the periphery. A locking mounting seat (403) is fixedly installed on the rear end of the second protective shell (4) near the left and right sides. A manual thumb locker (201) is provided on the front of the first protective shell (2) near the left and right sides.
2. A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment according to claim 1, characterised in that: During installation, the outer surface of the vent (5) is in close contact with the inside of the second protective shell (4).
3. A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment according to claim 1, characterised in that: During installation, the outer surface of the anode block (401) is pressed against the inside of the vent shroud (5).
4. A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment according to claim 1, characterized in that: During installation, the outer surface of the limit strip (402) is in active engagement with the inside of the slot (101).
5. A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment according to claim 1, characterized in that: The first protective shell (2) has threaded grooves on both the left and right sides near the bottom. During installation, the outer surfaces of the multiple bolts (3) near the rear end are threadedly connected to the threaded grooves on the first protective shell (2).
6. A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment according to claim 1, characterized in that: The first protective shell (2) and the second protective shell (4) are both made of fiber reinforced plastic (FRP).
7. A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment according to claim 1, characterized in that: The sealing ring (6) is made of ethylene propylene diene monomer (EPDM) rubber.
8. A ring-shaped zinc alloy sacrificial anode suitable for use in a subsea environment according to claim 1, characterized in that: The first protective shell (2) and the second protective shell (4) have the same structure, and the first protective shell (2) and the second protective shell (4) are symmetrically arranged.