External sacrificial anode device

Abstract

The present invention provides an external sacrificial anode device, including an outer cover and an inner cover, wherein the inner cavity of the inner cover is used to place the anode metal body, a plurality of first through holes are provided on both sides of the outer cover, and a second through hole is provided at the position of the inner cover corresponding to the first through hole, and the first through hole is communicated with the second through hole. The outer cover and the inner cover of the present invention cover the anode metal body between them, so as to ensure that the cut anode metal will fall into the inner cover and will not sink into the sea, so that the anode metal body can be fully and effectively used to avoid waste, and the inner cover is driven by a motor to move down to the bottom of the screw rod to form a gap between the bottom of the outer cover and the top of the inner cover, so that the small pieces of the anode metal body in the inner cover can be taken out and replaced with a new block anode metal body, so that the anode metal body can be quickly replaced, effectively reducing the time of underwater operations, thereby greatly reducing the difficulty of underwater operations.

Description

Technical Field

[0001] The invention relates to the technical field of corrosion protection, in particular to an external sacrificial anode device. Background Art

[0002] Sacrificial anode technology is widely used in the corrosion protection industry. It is an effective method for metal corrosion protection. Its basic principle is to use a metal with strong reducing properties as a protective electrode and connect it to the protected metal through a conductive medium to form a primary battery. In the formed primary battery, the metal with strong reducing properties acts as the anode of the primary battery and undergoes an oxidation reaction. As electrons flow out, it is gradually consumed. In this way, the protected metal acts as the cathode of the primary battery to avoid corrosion. At present, cathodic protection is often used to protect the hull of ships sailing in seawater;

[0003] Cathodic protection method: a method of protecting the hull metal by utilizing the different electric potentials of different metals. This method is to select a metal (such as zinc, aluminum) or alloy (such as magnesium alloy) that is more active than iron and install it on the underwater part of the hull as an anode to be corroded. Zinc, aluminum, and magnesium are more active than iron, and will continuously release electrons into the hull through the electrolyte seawater, making the hull a cathode and thus protected.

[0004] The prior art has the following deficiencies: the anode is generally installed on the hull. During use, the anode electrode will be continuously corroded. If the corrosion causes cutting of the anode metal, the cut anode metal will sink into the sea, causing serious waste of the anode metal; secondly, when the anode metal is completely corroded, the anode metal needs to be disassembled and replaced. Since the anode metal is mostly installed on the bottom of the hull by fastening bolts, disassembly and assembly takes a long time, which greatly increases the difficulty of underwater operations. Summary of the invention

[0005] The present invention aims at the deficiencies of the prior art and provides an external sacrificial anode device.

[0006] The present invention solves the above technical problems through the following technical means: an external sacrificial anode device comprises an outer cover and an inner cover, the inner cavity of the inner cover is used to place the anode metal body, a plurality of first through holes are opened on both sides of the outer cover, a second through hole is opened at the position of the inner cover corresponding to the first through hole, the first through hole is communicated with the second through hole, an adjustment mechanism for adjusting the inner cover to move up and down is arranged between the outer cover and the inner cover, and the adjustment mechanism adjusts the movement of the inner cover to form a gap between the bottom of the outer cover and the top of the inner cover.

[0007] Preferably, a fixing frame is connected to the top of the outer cover, and the adjustment mechanism includes a motor installed on the top of the fixing frame, a screw rod symmetrically arranged between the outer cover and the inner cover, and a transmission mechanism connected between the screw rod and the motor output shaft; the motor drives the screw rod to rotate through the transmission mechanism, and drives the inner cover to move up and down through the rotating screw rod in a threaded transmission manner.

[0008] Preferably, the threaded portion of the screw rod is provided at the bottom of the outer surface, and the top of the screw rod is rotatably connected to the fixing frame, the fixing frame is arranged in an inverted U shape, and the transmission mechanism is arranged on the inner side of the fixing frame.

[0009] Preferably, the transmission mechanism includes a driving sprocket connected to the outside of the motor output shaft, a driven sprocket connected to the top of the screw rod, and a chain connected between the driving sprocket and the driven sprocket.

[0010] Preferably, water-permeable mesh plates are connected to both sides of the inner cavity of the inner cover, and the anode metal body is placed between the cavity formed by the water-permeable mesh plate and the inner cover.

[0011] Preferably, it further comprises a controller and a display device, a camera is symmetrically connected to the top surface of the inner cavity of the outer cover, the output end of the camera is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the display device.

[0012] Beneficial effects of the present invention:

[0013] 1. The outer cover and the inner cover of the present invention arrange the anode metal body cover between them, and the anode metal body is used as a sacrificial anode to protect the bottom of the hull. When the anode metal body is corroded and cut, it is ensured that the cut anode metal will fall into the inner cover and will not sink into the sea, so that the anode metal body can be fully and effectively used to avoid waste;

[0014] 2. The present invention drives the inner cover to move downward by the operation of the motor, so that the through-hole area on both sides of the outer cover and the inner cover can be increased, thereby increasing the water intake, so that the seawater and the anode metal body can fully contact and react, thereby effectively preventing the seawater from not being fully reacted and corroding the hull; when the inner cover moves downward, the space formed by the outer cover and the inner cover will become larger, so that a larger block anode metal body can be placed, thereby effectively extending the service life of the anode metal body and reducing the replacement frequency of the anode metal body;

[0015] 3. The present invention drives the inner cover downward to the bottom of the screw rod by a motor, so that a gap is formed between the bottom of the outer cover and the top of the inner cover, so that the small pieces of the anode metal body in the inner cover can be taken out and replaced with a new block-shaped anode metal body. After the replacement is completed, the inner cover is driven upward by a motor, and the block-shaped anode metal body after replacement is sealed by the outer cover and the inner cover, so that the anode metal body can be quickly replaced, which effectively reduces the time of underwater operations and greatly reduces the difficulty of underwater operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the corrosion cutting of the anode metal body of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 3 It is a schematic diagram of placing the anode metal body in the inner cover of the present invention;

[0019] Figure 4 The state where the inner cover of the present invention moves downward Figure 1 ;

[0020] Figure 5 The state where the inner cover of the present invention moves downward Figure 2 ;

[0021] Figure 6 It is a top view of the transmission mechanism of the present invention.

[0022] In the figure: 1, outer cover; 2, inner cover; 3, first through hole; 4, second through hole; 5, fixing frame; 6, adjusting mechanism; 61, motor; 62, screw rod; 63, transmission mechanism; 631, driving sprocket; 632, driven sprocket; 633, chain; 7, water-permeable mesh plate; 8, camera; 9, anode metal body. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0025] Example

[0026] Example 1

[0027] See also Figure 2 and Figure 3 As shown, the external sacrificial anode device of this embodiment includes an outer cover 1 and an inner cover 2. The inner cavity of the inner cover 2 is used to place the anode metal body 9. A plurality of first through holes 3 are opened on both sides of the outer cover 1. The inner cover 2 is opened at the position corresponding to the first through holes 3. The first through holes 3 are communicated with the second through holes 4. An adjustment mechanism 6 for adjusting the inner cover 2 to move up and down is provided between the outer cover 1 and the inner cover 2. The adjustment mechanism 6 adjusts the movement of the inner cover 2 to form a gap between the bottom of the outer cover 1 and the top of the inner cover 2.

[0028] A fixing frame 5 is connected to the top of the outer cover 1, and the adjustment mechanism 6 includes a motor 61 installed on the top of the fixing frame 5, a screw rod 62 symmetrically arranged between the outer cover 1 and the inner cover 2, and a transmission mechanism 63 connected between the screw rod 62 and the output shaft of the motor 61; the motor 61 drives the screw rod 62 to rotate through the transmission mechanism 63, and drives the inner cover 2 to move up and down by the rotating screw rod 62 in a threaded transmission manner; the threaded part of the screw rod 62 is opened at the bottom of the outer surface, and the top of the screw rod 62 is rotatably connected to the fixing frame 5, the fixing frame 5 is arranged in an inverted U shape, and the transmission mechanism 63 is arranged on the inner side of the fixing frame 5; the transmission mechanism 63 includes a driving sprocket 631 connected to the outside of the output shaft of the motor 61, a driven sprocket 632 connected to the top of the screw rod 62, and a chain 633 connected between the driving sprocket 631 and the driven sprocket 632;

[0029] Specific implementation method: The device is installed on the bottom of the hull through the mounting ears on both sides of the fixing frame 5, so that the first through hole 3 and the second through hole 4 face the direction of the ship. The seawater will enter the inner cover 2 through the aligned first through hole 3 and the second through hole 4 and contact the anode metal body 9, and then flow out from the aligned first through hole 3 and the second through hole 4, and the anode metal body 9 acts as a sacrificial anode to protect the bottom of the hull. When the anode metal body 9 is corroded and cut, as shown in FIG. Figure 1 As shown, the cut anode metal will fall into the inner cover 2 and will not sink into the sea, so that the anode metal body 9 can be fully and effectively used to avoid waste;

[0030] Example 2

[0031] During use, if the bottom of the hull still shows slight corrosion after traveling for a period of time, the surface of the anode metal body 9 is not sufficiently sacrificed, that is, the contact area between the anode metal body 9 and the seawater may be small, resulting in insufficient reaction between the seawater and the anode metal body 9. Therefore, the following improvements are made to solve the problem;

[0032] like Figures 2 to 5As shown, a fixing frame 5 is connected to the top of the outer cover 1, and the adjustment mechanism 6 includes a motor 61 installed on the top of the fixing frame 5, a screw rod 62 symmetrically arranged between the outer cover 1 and the inner cover 2, and a transmission mechanism 63 connected between the screw rod 62 and the output shaft of the motor 61; the motor 61 drives the screw rod 62 to rotate through the transmission mechanism 63, and drives the inner cover 2 to move up and down by the rotating screw rod 62 in a threaded transmission manner; the threaded part of the screw rod 62 is opened at the bottom of the outer surface, and the top of the screw rod 62 is rotatably connected to the fixing frame 5, the fixing frame 5 is arranged in an inverted U shape, and the transmission mechanism 63 is arranged on the inner side of the fixing frame 5; the transmission mechanism 63 includes a driving sprocket 631 connected to the outside of the output shaft of the motor 61, a driven sprocket 632 connected to the top of the screw rod 62, and a chain 633 connected between the driving sprocket 631 and the driven sprocket 632;

[0033] It also includes a controller and a display device. A camera 8 is symmetrically connected to the top surface of the inner cavity of the outer cover 1. The output end of the camera 8 is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the display device.

[0034] Specific implementation method: After the ship has traveled for a period of time, if there is slight corrosion on the bottom, the controller controls the motor 61 to drive the driving sprocket 631 to rotate. Since the driving sprocket 631 and the driven sprocket 632 are driven by the chain 633, the driving sprocket 631 will drive the driven sprocket 632 and the screw rod 62 to rotate synchronously through the chain 633, and the inner cover 2 is driven downward by the rotating screw rod 62 in a threaded transmission manner, such as Figure 4 As shown, the through hole area on both sides of the outer cover 1 and the inner cover 2 can be increased, thereby increasing the water intake, allowing the seawater to fully contact and react with the anode metal body 9, thereby effectively preventing the seawater from not being fully reacted and corroding the hull;

[0035] During use, the water inflow cannot be infinitely increased. If the water inflow is infinitely increased, the corrosion of the anode metal body 9 will become faster, which is not conducive to the long-term and efficient use of the anode metal body 9.

[0036] When the inner cover 2 moves downward, the space formed by the outer cover 1 and the inner cover 2 will become larger, so that a larger block-shaped anode metal body 9 can be placed, thereby effectively extending the service life of the anode metal body 9 and reducing the replacement frequency of the anode metal body 9.

[0037] Example 3

[0038] Specific implementation method: The controller controls the motor 61 to run, and the motor 61 drives the inner cover 2 to move down to the bottom end of the screw rod 62, such as Figure 5As shown, a gap is formed between the bottom of the outer cover 1 and the top of the inner cover 2, so that small pieces of the anode metal body 9 in the inner cover 2 can be taken out and replaced with a new block anode metal body 9. After the replacement is completed, the inner cover 2 is driven upward by the motor 61, and the replaced block anode metal body 9 is sealed by the outer cover 1 and the inner cover 2, so that the anode metal body 9 can be quickly replaced, which effectively reduces the time of underwater operations and greatly reduces the difficulty of underwater operations.

[0039] Example 4

[0040] In order to monitor the use of the anode metal body 9, a camera 8 is installed on the top surface of the inner cavity of the outer cover 1. The use of the anode metal body 9 is collected through the camera 8, and the use of the anode metal body 9 is imaged through the display device, which effectively prevents the seawater from corroding the hull after the anode metal body 9 is used up. When the anode metal body 9 is about to be used up, it is observed through the display device and the anode metal body 9 is replaced in time;

[0041] Water-permeable mesh plates 7 are connected to both sides of the inner cavity of the inner cover 2, and the anode metal body 9 is placed between the cavity formed by the water-permeable mesh plates 7 and the inner cover 2; the anode metal body 9 is blocked by the water-permeable mesh plates 7, which can effectively prevent the anode metal body 9 from contacting with the screw rod 62 and causing damage to the screw rod 62.

[0042] In the present invention, the controller and the display device are both installed inside the hull. The model of the controller is MAM-200, and the control circuit can be implemented by simple programming by technicians in this field. It belongs to the common knowledge in this field. It is only used but not improved. In addition, the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0043] It should be noted that, in this article, if there are relational terms such as first and second, etc., they are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. External sacrificial anode device, characterized by: The invention comprises an outer cover (1) and an inner cover (2), wherein the inner cavity of the inner cover (2) is used to place an anode metal body (9), a plurality of first through holes (3) are provided on both sides of the outer cover (1), and second through holes (4) are provided on the inner cover (2) at positions corresponding to the first through holes (3), wherein the first through holes (3) are communicated with the second through holes (4), and an adjustment mechanism (6) for adjusting the upward and downward movement of the inner cover (2) is provided between the outer cover (1) and the inner cover (2), wherein the adjustment mechanism (6) adjusts the movement of the inner cover (2) so as to form a gap between the bottom of the outer cover (1) and the top of the inner cover (2).

2. The external sacrificial anode device according to claim 1, characterized in that: The top of the outer cover (1) is connected to a fixing frame (5), and the adjusting mechanism (6) comprises a motor (61) mounted on the top of the fixing frame (5), a screw rod (62) symmetrically arranged between the outer cover (1) and the inner cover (2), and a transmission mechanism (63) connected between the screw rod (62) and an output shaft of the motor (61); the motor (61) drives the screw rod (62) to rotate through the transmission mechanism (63), and drives the inner cover (2) to move up and down through the rotating screw rod (62) in a threaded transmission manner.

3. The external sacrificial anode device according to claim 2, characterized in that: The threaded portion of the screw rod (62) is provided at the bottom of the outer surface, and the top of the screw rod (62) is rotatably connected to the fixing frame (5). The fixing frame (5) is arranged in an inverted U shape, and the transmission mechanism (63) is arranged on the inner side of the fixing frame (5).

4. The external sacrificial anode device according to claim 3, characterized in that: The transmission mechanism (63) comprises a driving sprocket (631) connected to the outside of the output shaft of the motor (61), a driven sprocket (632) connected to the top of the screw rod (62), and a chain (633) connected between the driving sprocket (631) and the driven sprocket (632).

5. The external sacrificial anode device according to claim 1, characterized in that: Water-permeable mesh plates (7) are connected to both sides of the inner cavity of the inner cover (2), and the anode metal body (9) is placed between the cavity formed by the water-permeable mesh plates (7) and the inner cover (2).

6. The external sacrificial anode device according to claim 1, characterized in that: It also includes a controller and a display device, wherein a camera (8) is symmetrically connected to the top surface of the inner cavity of the outer cover (1), the output end of the camera (8) is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the display device.

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