Cathodically protected zinc alloy sacrificial anode

Abstract

This utility model discloses a zinc alloy sacrificial anode for cathodic protection, belonging to the field of sacrificial anode technology. It includes a pre-installation plate, a housing mounted on the pre-installation plate, a lifting box inside the housing, a buffer pad inside the lifting box, and a zinc alloy sacrificial anode inside the lifting box. A sacrificial anode fixing mechanism is detachably installed on the top of the housing. Rod sleeves are slidably mounted at both ends of the top of the lifting box, and telescopic adjusting rods are slidably mounted inside the rod sleeves. Each pair of telescopic adjusting rods is equipped with an installation ring, and a hanging ring is mounted on the installation ring. Hooks are attached to the installation rings and hanging rings, and steel cables are mounted on the hooks. Adjustment mechanisms are provided on the lifting box, rod sleeves, and telescopic adjusting rods. This utility model, through the coordinated use of the above devices, can quickly fix the zinc alloy sacrificial anode, preventing impurities and contaminants in seawater from entering the housing and causing corrosion and contamination of the zinc alloy sacrificial anode, reducing the workload of replacing the zinc alloy sacrificial anode, and ensuring the safety of underwater operators.

Description

Technical Field

[0001] This utility model relates to the field of sacrificial anode technology, specifically a zinc alloy sacrificial anode for cathodic protection. Background Technology

[0002] Sacrificial anode cathodic protection devices are a highly efficient metal corrosion protection technology. Their working principle is based on the galvanic cell principle, connecting a metal with strong reducing properties as the negative electrode and the metal being protected as the positive electrode, thereby preventing corrosion of the positive electrode metal. In soil, magnesium is commonly used as the sacrificial anode material; while in seawater, zinc and aluminum alloys are selected.

[0003] An investigation revealed that Chinese utility model patent CN222294204U discloses a cathodic protection zinc alloy sacrificial anode, comprising a sacrificial anode body and a connecting block fixed to the side of the sacrificial anode body. A protective box is provided outside the sacrificial anode body, and a fixing box is fixedly connected to the outer surface of the protective box. A movable mechanism is provided inside the fixing box, and a baffle is provided above the connecting block. This utility model's cathodic protection zinc alloy sacrificial anode allows for easy removal of the sacrificial anode body by pulling the baffle, thus removing the restriction on the connecting block. A new sacrificial anode body is placed inside the protective box, causing the connecting block to press against the baffle and enter. The movable mechanism then resets the baffle, restricting the connecting block and fixing both the connecting block and the sacrificial anode body inside the protective box. Finally, the cover plate is installed, facilitating installation.

[0004] While the aforementioned patent allows for non-welding replacement of sacrificial anodes through the use of threaded rods, baffles, and other structural features, zinc alloy sacrificial anodes are generally used in seawater environments. Replacing these anodes often requires personnel to dive into the sea. However, the surface of zinc alloy sacrificial anodes lacks suitable gripping points, and their weight makes the process of submerging and carrying them to the surface for processing significantly difficult and poses safety hazards.

[0005] Therefore, this invention provides a zinc alloy sacrificial anode for cathodic protection to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This invention provides a zinc alloy sacrificial anode for cathodic protection, aiming to solve the problem mentioned in the background art that zinc alloy sacrificial anodes are generally used in seawater environments. When replacing zinc alloy sacrificial anodes, it is often necessary for the replacement personnel to dive into the seawater environment to work. However, the surface of the zinc alloy sacrificial anode does not have suitable gripping points, and the zinc alloy sacrificial anode is relatively heavy. When the replacement personnel dive down to replace it and carry it to the sea surface for treatment, it will greatly hinder their own diving and also pose certain safety hazards.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: It includes a pre-installation plate, on which a housing is mounted; a hanging box is installed inside the housing; a buffer pad is installed inside the hanging box; a zinc alloy sacrificial anode is installed inside the hanging box; a sacrificial anode fixing mechanism is detachably installed on the top of the housing; rod sleeves are slidably mounted at both ends of the top of the hanging box; telescopic adjusting rods are slidably mounted inside the rod sleeves; each pair of telescopic adjusting rods is equipped with an installation ring; a hanging ring is mounted on the installation ring; hooks are attached to the installation rings and the hanging rings; steel cables are mounted on the hooks; and adjusting mechanisms are provided on the hanging box, the rod sleeves, and the telescopic adjusting rods.

[0010] As a preferred technical solution of this application, the sacrificial anode fixing mechanism includes a cover plate covering the top of the box, a filter screen installed inside the cover plate, an extension rod installed at the bottom of the cover plate, a pressure plate installed at the bottom of the extension rod, and the pressure plate abutting against the top of the zinc alloy sacrificial anode.

[0011] As a preferred technical solution of this application, the box body and the cover plate are both provided with a latch, and the box body and the cover plate are respectively equipped with a positioning block and a positioning sleeve, with the positioning block inserted into the positioning sleeve.

[0012] As a preferred technical solution of this application, the adjustment mechanism includes cross-shaped grooves formed at both ends of the top of the hoisting box, a cross-shaped block slidably installed in the cross-shaped groove, a rotating sleeve installed on the top of the cross-shaped block, a rotating block rotatably installed in the rotating sleeve, and a rod sleeve installed on the rotating block.

[0013] As a preferred technical solution of this application, a bottom block is installed on the top of the cross-shaped block, and a positioning plug is inserted through the bottom block, with the bottom end of the positioning plug inserted into the top of the hanging box.

[0014] As a preferred technical solution of this application, a reset spring is installed on the bottom block, and the other end of the reset spring is installed on the positioning plug.

[0015] As a preferred technical solution of this application, a pin is slidably installed on the top of the hoisting box, a first magnetic block is installed at the end of the pin, and a second magnetic block is installed inside the end of the telescopic adjustment rod, the first magnetic block and the second magnetic block being compatible.

[0016] (III) Beneficial Effects

[0017] This invention allows underwater workers to carry hooks and steel cables into the water. By adjusting the positions of the rod sleeve and telescopic adjustment rods, a pair of mounting rings and a pair of hanging rings on the telescopic adjustment rods are aligned. The hooks are then passed through the mounting rings and hanging rings. At this point, personnel on the surface of the sea can directly pull the steel cable, and the caisson and buffer pad are lifted directly from the caisson through the hooks. The underwater workers can then rise directly to the surface of the sea, which reduces the workload of replacing zinc alloy sacrificial anodes and ensures the safety of underwater workers.

[0018] This invention utilizes a pressure plate and a cover plate in combination, and with the locking action of the latch, the zinc alloy sacrificial anode can be fixed inside the tank, thus enabling quick installation of the zinc alloy sacrificial anode. The operation is relatively convenient, and the filter screen can prevent impurities and dirt in the seawater from entering the tank and causing corrosion and contamination of the zinc alloy sacrificial anode during use. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of a zinc alloy sacrificial anode for cathodic protection;

[0020] Figure 2 A schematic diagram of the hook and cable structure of a zinc alloy sacrificial anode for cathodic protection;

[0021] Figure 3 A schematic diagram of the cover plate and filter screen structure of a zinc alloy sacrificial anode for cathodic protection;

[0022] Figure 4 A schematic diagram of a rod sleeve and telescopic adjustment rod structure for a zinc alloy sacrificial anode for cathodic protection;

[0023] Figure 5 This is a schematic diagram of the rotating sleeve and rotating block structure of a zinc alloy sacrificial anode for cathodic protection.

[0024] In the diagram: 1. Pre-installation plate; 2. Box body; 3. Lifting box; 4. Buffer pad; 5. Zinc alloy sacrificial anode; 6. Sacrificial anode fixing mechanism; 61. Cover plate; 62. Filter screen; 63. Extension rod; 64. Pressure plate; 65. Positioning block; 66. Positioning sleeve; 67. Lock; 7. Rod sleeve; 8. Telescopic adjustment rod; 9. Mounting ring; 10. Hanging ring; 11. Hook; 12. Steel cable; 13. Adjustment mechanism; 131. Cross-shaped groove; 132. Cross-shaped block; 133. Rotating sleeve; 134. Rotating block; 135. Base block; 136. Positioning insert; 137. Return spring; 138. Pin; 139. Magnetic block No. 1; 1310. Magnetic block No. 2. Detailed Implementation

[0025] 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.

[0026] Example:

[0027] like Figure 1-5As shown, this utility model provides a zinc alloy sacrificial anode for cathodic protection, including a pre-installation plate 1, which facilitates the replacement of the zinc alloy sacrificial anode 5, reduces the workload of underwater workers, and avoids safety hazards. A housing 2 is mounted on a pre-installation plate 1. A hanging box 3 is installed inside the housing 2. A buffer pad 4 is installed inside the hanging box 3. A zinc alloy sacrificial anode 5 is installed inside the hanging box 3. A sacrificial anode fixing mechanism 6 is detachably installed on the top of the housing 2. Rod sleeves 7 are slidably installed at both ends of the top of the hanging box 3. Telescopic adjustment rods 8 are slidably installed inside the rod sleeves 7. Each pair of telescopic adjustment rods 8 is equipped with an installation ring 9. A hanging ring 10 is installed on the installation ring 9. A hook 11 is attached to the installation ring 9 and the hanging ring 10. A steel cable 12 is installed on the hook 11. An adjustment mechanism 13 is provided on the hanging box 3, the rod sleeves 7, and the telescopic adjustment rods 8. The pre-installation plate 1 is pre-installed in a suitable position. Then, the zinc alloy sacrificial anode 5 is placed inside the hanging box 3, and the hanging box 3 is placed inside the housing 2. The buffer pad 4 can buffer and dampen the zinc alloy sacrificial anode 5, which can reduce the impact of vibration on the zinc alloy sacrificial anode 5. The zinc alloy sacrificial anode 5 is then fixed inside the housing 2 via the sacrificial anode fixing mechanism 6, thus completing the installation of the zinc alloy sacrificial anode 5. The operation is relatively convenient. The sacrificial anode fixing mechanism 6 can prevent impurities and dirt in the seawater from entering the housing 2 and causing corrosion and contamination of the zinc alloy sacrificial anode 5. When replacing the zinc alloy sacrificial anode 5 after long-term use, the sacrificial anode fixing mechanism 6 is directly disassembled. Underwater workers carry the hook 11 and steel cable 12, and drive the rod sleeve 7 and telescopic adjustment rod 8 to rotate through the adjustment mechanism 13, so that the pair of mounting rings 9 and the pair of hanging rings 10 on the pair of telescopic adjustment rods 8 correspond. Then, the hook 11 is passed through the pair of mounting rings 9 and the pair of hanging rings 10. At this time, the personnel on the sea surface directly pull the steel cable 12, and directly lift the lifting box 3 and the buffer pad 4 from the housing 2 through the hook 11. The underwater workers can directly rise to the sea surface, which can reduce the workload of replacing the zinc alloy sacrificial anode 5, eliminate the need for underwater workers to carry heavy objects and dive, and avoid the safety hazards of replacing the zinc alloy sacrificial anode 5.

[0028] Specifically, to quickly install and fix the zinc alloy sacrificial anode 5 and prevent it from being corroded by underwater impurities and contaminants, the sacrificial anode fixing mechanism 6 includes a cover plate 61 covering the top of the housing 2, a filter screen 62 installed inside the cover plate 61, an extension rod 63 installed at the bottom of the cover plate 61, and a pressure plate 64 installed at the bottom of the extension rod 63, which abuts against the top of the zinc alloy sacrificial anode 5; a latch 67 is provided on both the housing 2 and the cover plate 61, and positioning blocks 65 and positioning sleeves 66 are respectively installed on the housing 2 and the cover plate 61, with the positioning blocks 65 inserted into the positioning sleeves 66; the positioning blocks 65 are aligned with... Positioning sleeve 66 is inserted, at which point cover plate 61 will cover the top of box 2. Then, cover plate 61 is locked onto box 2 by latch 67. At this time, pressure plate 64 is pressed against the top of zinc alloy sacrificial anode 5, which can fix zinc alloy sacrificial anode 5 inside box 2, thus completing the installation of zinc alloy sacrificial anode 5. The operation is relatively convenient. Filter screen 62 can prevent impurities and dirt in seawater from entering box 2 and causing corrosion and pollution of zinc alloy sacrificial anode 5 when it is in use.

[0029] Specifically, in order to achieve the rotational unfolding adjustment of the positions of the pole sleeve 7 and the telescopic adjustment rod 8, so that the pair of telescopic adjustment rods 8 and the mounting rings 9 correspond, it is convenient to hook the hook 11 to lift out the zinc alloy sacrificial anode 5. The adjustment mechanism 13 includes cross-shaped grooves 131 opened at both ends of the top of the lifting box 3. A cross-shaped block 132 is slidably installed in the cross-shaped groove 131. A rotating sleeve 133 is installed on the top of the cross-shaped block 132. A rotating block 134 is rotatably installed in the rotating sleeve 133. The pole sleeve 7 is installed on the rotating block 134. When the pole sleeve 7 and the telescopic adjustment rod 8 are moved, the rotating block 134 rotates in the rotating sleeve 133, which drives the pole sleeve 7 and the telescopic adjustment rod 8 to rotate, so that the pair of mounting rings 9 and the pair of hanging rings 10 on the pair of telescopic adjustment rods 8 correspond. Then the hook 11 is passed through the pair of mounting rings 9 and the pair of hanging rings 10. At this time, the personnel on the sea surface directly pull the steel cable 12 and lift the lifting box 3 and the buffer pad 4 directly from the box 2 through the hook 11.

[0030] Specifically, to adjust the longitudinal position of the sleeve 7 and the telescopic adjustment rod 8, a base block 135 is installed on the top of the cross-shaped block 132. A positioning plug 136 is inserted through the base block 135, and the bottom end of the positioning plug 136 is inserted into the top of the hanging box 3. A return spring 137 is installed on the base block 135, and the other end of the return spring 137 is installed on the positioning plug 136. When the positioning plug 136 is pulled out from the top of the hanging box 3, it releases the lock on the cross-shaped block 132. The cross-shaped block 132 is pushed forward to another position, and the positioning plug 136 is released. Under the action of the return spring 137, the positioning plug 136 will be inserted back into the top of the hanging box 3 to fix the longitudinal position of the sleeve 7 and the telescopic adjustment rod 8, thus achieving the adjustment of the longitudinal position of the sleeve 7 and the telescopic adjustment rod 8.

[0031] Furthermore, to lock the sleeve 7 and telescopic adjustment rod 8 when they are stored, a pin 138 is slidably installed on the top of the hanging box 3. A first magnetic block 139 is installed at the end of the pin 138, and a second magnetic block 1310 is installed inside the end of the telescopic adjustment rod 8. The first magnetic block 139 and the second magnetic block 1310 are compatible. When the telescopic adjustment rod 8 is stored in the sleeve 7, the pin 138 is inserted into the end of the telescopic adjustment rod 8, and the first magnetic block 139 and the second magnetic block 1310 attract each other, which can play a role in locking the rotation of the sleeve 7 and the telescopic adjustment rod 8.

[0032] Working principle: In use, the pre-installation plate 1 is installed in a suitable position beforehand. Then, the zinc alloy sacrificial anode 5 is placed inside the hanging box 3, and the hanging box 3 is placed inside the housing 2. The buffer pad 4 can buffer and dampen the zinc alloy sacrificial anode 5, reducing the impact of vibration on the zinc alloy sacrificial anode 5. Next, the positioning insert 65 is aligned with the positioning sleeve 66 and inserted. At this time, the cover plate 61 will cover the top of the housing 2. Then, the cover plate 61 is locked onto the housing 2 by the latch 67. At this time, the pressure plate 64 is pressed against the top of the zinc alloy sacrificial anode 5, which can fix the zinc alloy sacrificial anode 5 inside the housing 2, thus completing the installation of the zinc alloy sacrificial anode 5. The operation is relatively convenient. The filter screen 62 can prevent impurities and dirt in the seawater from entering the housing 2 and causing corrosion and contamination of the zinc alloy sacrificial anode 5 during use. It should be noted that the latch 67 is a common type of locking hardware on the market and is an existing component. Its specific structure and principle will not be elaborated here. Furthermore, the surfaces of the housing 2, the hanging box 3, and the buffer pad 4 are not completely sealed. Depending on the usage requirements of the zinc alloy sacrificial anode 5, corresponding holes will be made on the surfaces of the housing 2, the hanging box 3, and the buffer pad 4 to facilitate the connection between wire harnesses. When replacing the zinc alloy sacrificial anode 5 after long-term use, simply unlock the latch 67 and remove the cover plate 61 and the pressure plate 64. Underwater workers carry the hook 11 and the steel cable 12. In the initial state, the telescopic adjustment rod 8 is stored inside the rod sleeve 7, and the pin 138 is inserted into the end of the telescopic adjustment rod 8. The first magnetic block 139 and the second magnetic block 1310 attract each other, which can lock the rotation of the rod sleeve 7 and the telescopic adjustment rod 8. At this point, unfold the pair of rod sleeves 7 and telescopic adjustment rods 8, directly pull out the pin 138 from the telescopic adjustment rod 8 to release the lock on the rod sleeves 7 and telescopic adjustment rods 8, then pull out the positioning plug 136 from the top of the hanging box 3 to release the lock on the cross block 132, and push the cross block 132 forward to another position, and release the positioning plug 136. Under the action of the return spring 137, the positioning plug 136 will be driven to insert into the top of the hanging box 3 again to fix the longitudinal position of the rod sleeves 7 and telescopic adjustment rods 8. It should be noted that the top of the hanging box 3 is provided with a pair of insertion slots, which correspond to the storage and unfolding points respectively and are adapted to the positioning plug 136. Next, move the rod sleeve 7 and the telescopic adjustment rod 8. The rotating block 134 rotates within the rotating sleeve 133, which in turn drives the rod sleeve 7 and the telescopic adjustment rod 8 to rotate. This aligns the pair of mounting rings 9 and the pair of hanging rings 10 on the pair of telescopic adjustment rods 8. It should be noted that the mounting rings 9 and the hanging rings 10 are symmetrical about the center of the gondola 3 when in the retracted state, and their rotation and retraction do not affect each other. Then, pass the hook 11 through the pair of mounting rings 9 and the pair of hanging rings 10. At this point, personnel on the sea surface can directly pull the steel cable 12 and use the hook 11 to directly lift the gondola 3 and the buffer pad 4 from inside the gondola 2. Underwater operators can then directly surface, reducing the workload of replacing the zinc alloy sacrificial anode 5 and ensuring the safety of underwater operators.

[0033] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A zinc alloy sacrificial anode for cathodic protection, comprising a pre-mounted plate (1), characterized in that: A box (2) is installed on the pre-installation plate (1). A hanging box (3) is installed inside the box (2). A buffer pad (4) is installed inside the hanging box (3). A zinc alloy sacrificial anode (5) is installed inside the hanging box (3). A sacrificial anode fixing mechanism (6) is detachably installed on the top of the box (2). A rod sleeve (7) is slidably installed at both ends of the top of the hanging box (3). A telescopic adjustment rod (8) is slidably installed inside the rod sleeve (7). An installation ring (9) is installed on each pair of telescopic adjustment rods (8). A hanging ring (10) is installed on the installation ring (9). A hook (11) is attached to the installation ring (9) and the hanging ring (10). A steel cable (12) is installed on the hook (11). An adjustment mechanism (13) is provided on the hanging box (3), the rod sleeve (7), and the telescopic adjustment rod (8).

2. The zinc alloy sacrificial anode for cathodic protection according to claim 1, characterized in that: The sacrificial anode fixing mechanism (6) includes a cover plate (61) covering the top of the housing (2), a filter screen (62) installed inside the cover plate (61), an extension rod (63) installed at the bottom of the cover plate (61), a pressure plate (64) installed at the bottom of the extension rod (63), and the pressure plate (64) abutting against the top of the zinc alloy sacrificial anode (5).

3. The zinc alloy sacrificial anode for cathodic protection according to claim 2, characterized in that: The housing (2) and the cover plate (61) are both provided with a latch (67). The housing (2) and the cover plate (61) are respectively equipped with a positioning block (65) and a positioning sleeve (66). The positioning block (65) is inserted into the positioning sleeve (66).

4. The zinc alloy sacrificial anode for cathodic protection according to claim 1, characterized in that: The adjustment mechanism (13) includes cross-shaped grooves (131) formed at both ends of the top of the hoisting box (3). A cross-shaped block (132) is slidably installed in the cross-shaped groove (131). A rotating sleeve (133) is installed on the top of the cross-shaped block (132). A rotating block (134) is rotatably installed in the rotating sleeve (133). The rod sleeve (7) is installed on the rotating block (134).

5. The zinc alloy sacrificial anode for cathodic protection according to claim 4, characterized in that: A base block (135) is installed on the top of the cross-shaped block (132), and a positioning plug (136) is inserted through the base block (135). The bottom end of the positioning plug (136) is inserted into the top of the hanging box (3).

6. The zinc alloy sacrificial anode for cathodic protection according to claim 5, characterized in that: A reset spring (137) is installed on the bottom block (135), and the other end of the reset spring (137) is installed on the positioning plug (136).

7. The zinc alloy sacrificial anode for cathodic protection according to claim 6, characterized in that: The top of the hanging box (3) is slidably fitted with a pin (138), and a first magnetic block (139) is installed at the end of the pin (138). A second magnetic block (1310) is installed inside the end of the telescopic adjustment rod (8). The first magnetic block (139) and the second magnetic block (1310) are compatible.

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