Electrochemical protection device based on the sacrificial characteristics of magnesium metal anode

Abstract

This utility model discloses an electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes. The device includes a magnesium rod, which is mounted on a circulating water pipe via a fixing assembly. A conductive connector is fixedly attached to one end of the magnesium rod outside the circulating water pipe. The device also includes a monitoring device fixedly attached to the fixing assembly. This electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes solves the problems of high cost, complex construction, and poor effectiveness of existing rust prevention methods for circulating water pipes.

Description

Technical Field

[0001] This utility model belongs to the technical field of rust removal equipment, specifically relating to an electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes. Background Technology

[0002] Circulating water pipelines are widely used in industrial production. During long-term use, the presence of corrosive substances such as dissolved oxygen and chloride ions in the circulating water makes these pipelines prone to electrochemical corrosion, leading to problems such as rust and leakage, severely impacting pipeline lifespan and equipment safety. Traditional rust prevention equipment, such as rust-preventive coatings and welding sealing, suffers from drawbacks such as high cost, complex construction, and unsatisfactory results. Magnesium metal, as a highly efficient sacrificial anode material, possesses high electrochemical activity and can protect other metals from corrosion by sacrificing itself. However, current technology lacks electrochemical protection devices that directly apply magnesium to the interior of circulating water pipelines. Utility Model Content

[0003] The purpose of this invention is to provide an electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes, which solves the problems of high cost, complex construction and poor effect of existing rust prevention methods for circulating water pipelines.

[0004] The technical solution adopted in this utility model is an electrochemical protection device based on the sacrificial characteristics of magnesium metal anode, including a magnesium rod, which is installed on a circulating water pipe by a fixing component, and a conductive connector is fixedly connected to one end of the magnesium rod outside the circulating water pipe. It also includes a monitoring device, which is fixedly connected to the fixing component.

[0005] The features of this utility model also include:

[0006] The magnesium rod has a solid cylindrical structure, and contact grooves are etched on its surface.

[0007] The fixing component includes a fixing bracket, which is a hollow cylindrical structure. The circulating water pipe has a bracket mounting hole. The fixing bracket is inserted into the bracket mounting hole and welded to the circulating water pipe at the bracket mounting hole. The fixing bracket has several connecting bolts on its side, which are located outside the circulating water pipe. The connecting bolts together fix a magnesium rod inside the fixing bracket.

[0008] The mounting holes for the bracket, the fixed bracket, and the magnesium rod are all located at a distance of one-quarter to one-third from the inlet and outlet of the circulating water pipe.

[0009] The surface of the fixed bracket is coated with an anti-rust layer.

[0010] The connection between the fixed bracket and the circulating water pipe is coated with a protective coating on both the inner and outer walls of the circulating water pipe.

[0011] The conductive connector is made of copper metal, and the magnesium rod is fixed to the conductive connector at one end outside the circulating water pipe through a connecting conductor.

[0012] Sealing gaskets are provided at the connection points between the two ends of the connecting conductor and the magnesium rod and the conductive connector, respectively.

[0013] The monitoring device includes a corrosion detection lens mounted on a fixed bracket and connected to a signal transmission line. It also includes an external monitoring device, which is connected to the corrosion detection lens via the signal transmission line and is located outside the circulating water pipeline.

[0014] The beneficial effects of this utility model are:

[0015] This utility model provides an electrochemical protection device based on the anodic sacrificial characteristics of magnesium metal. Utilizing the anodic sacrificial properties of magnesium rods, it preferentially reacts with corrosive substances, blocking the contact between iron elements and corrosive agents in the pipeline. This can reduce the corrosion rate by approximately 70% to 80%, significantly extending the pipeline's service life. Furthermore, the device is installed inside the circulating water pipeline, without altering the overall pipeline layout or affecting normal circulating water flow and industrial production operations. Online maintenance and replacement are possible. The use of threaded connections and corrosion-resistant stainless steel fixing components, combined with a rational structural design, simplifies the installation and replacement of the magnesium rods, saving time and manpower. The device can typically be replaced by a skilled technician within half an hour. Its overall structure is simple and inexpensive, primarily consisting of magnesium rods, stainless steel fixing components, and copper conductive connectors. Compared to traditional anti-rust coatings and welding sealing techniques, it reduces costs by approximately 40% to 50% while maintaining the same level of protection. The installation location is precisely selected within 1 meter of the open circulating water tower in areas with high carbonic acid concentrations, fully utilizing the sacrificial protection of the magnesium anode. It also exhibits good adaptability to circulating water pipes of different materials and diameters, making it widely applicable in various industrial sectors such as chemical, power, and metallurgy, with broad market prospects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes according to this utility model.

[0017] In the figure, 1. Magnesium rod, 11. Contact groove, 2. Fixing component, 21. Fixing bracket, 22. Bracket mounting hole, 23. Connecting bolt, 24. Anti-rust layer, 25. Protective coating, 4. Conductive connector, 41. Connecting conductor, 42. Sealing gasket, 5. Monitoring device, 51. Corrosion detection lens, 52. Signal transmission line, 53. External monitoring equipment. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes provided by this utility model, such as Figure 1 As shown, the device includes a magnesium rod 1, which is mounted on a circulating water pipe via a fixing component 2 made of corrosion-resistant stainless steel. A conductive connector 4 is fixed to one end of the magnesium rod 1 outside the circulating water pipe. The device also includes a monitoring device 5, which is fixed to the fixing component 2. The magnesium rod 1 has a solid cylindrical structure, and contact grooves 11 are etched on its surface to increase the contact area with water. The fixing component 2 includes a fixing bracket 21, which has a hollow cylindrical structure. A bracket mounting hole 22 is provided on the circulating water pipe, and the fixing bracket 21 is inserted into the mounting hole 22. The bracket is welded to the circulating water pipe at mounting hole 22. Several connecting bolts 23 are located on the side of the fixed bracket 21, outside the circulating water pipe, and together they secure the magnesium rod 1. The magnesium rod 1 is housed within the fixed bracket 21 to ensure its stability during circulating water flow. The mounting hole 22, the fixed bracket 21, and the magnesium rod 1 are all located at a distance of one-quarter to one-third from the inlet and outlet of the circulating water pipe to maximize the sacrificial protection effect of the magnesium metal anode by utilizing the high carbonic acid concentration in this area. The surface of the fixed bracket 21 is coated with an anti-rust layer. 24; The fixed bracket 21 is connected to the circulating water pipe. Both the inner and outer walls of the circulating water pipe are coated with a protective coating 25. The protective coating 25 is a corrosion-resistant epoxy resin coating, used to prevent corrosion of the inner wall of the pipe from direct contact with water at the installation location of the magnesium rod 1, while not affecting the electrochemical reaction between the magnesium rod 1 and the pipe. The conductive connector 4 is a copper metal conductive connector, connected to both the magnesium rod 1 and the circulating water pipe to form a stable electrochemical circuit. One end of the magnesium rod 1 outside the circulating water pipe is fixed to the conductive connector 4 via a connecting conductor 41. The two ends of the connecting conductor 41 are respectively connected to the magnesium rod 1 and the conductive connector 4. All components are equipped with sealing gaskets 42 to ensure the stability and conductivity of the connection, while preventing water from seeping into the connection and causing a short circuit. The monitoring device 5 includes a corrosion detection lens 51, which is mounted on a fixed bracket 21 and is used to monitor the corrosion degree of the magnesium rod 1 in real time. The corrosion detection lens 51 is connected to a signal transmission line 52. It also includes an external monitoring device 53, which is connected to the corrosion detection lens 51 through the signal transmission line 52. The external monitoring device 53 is located outside the circulating water pipe to clearly observe the corrosion degree of the magnesium rod 1, replace the magnesium rod 1 in time, and ensure the long-term effective operation of the device.

[0020] This utility model provides an electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes. Its working principle is as follows: A magnesium rod 1 is installed inside a circulating water pipe via a fixing component 2, forming an electrochemical circuit with the inner wall of the pipe through a conductive connector 4. Due to the low electrode potential of magnesium, it preferentially undergoes an oxidation-reduction reaction as the anode in the aquatic environment, releasing electrons and thus protecting the pipe as the cathode from corrosion. This device facilitates the disassembly and replacement of the magnesium rod, allowing for regular monitoring of its consumption and timely replacement to ensure long-term effective rust prevention. In industrial open circulating water tower systems, water contacts the atmosphere, absorbing carbon dioxide (CO2) to generate carbonic acid (H2CO3). The carbonic acid further ionizes, releasing hydrogen ions (H+). + and bicarbonate HCO3 - Hydrogen ions (H+) + This leads to a decrease in the pH value of the water, creating an acidic electrolyte environment that promotes micro-cell corrosion on the surface of metal pipes: in the anodic reaction, iron (Fe) loses electrons and is oxidized to ferrous ions (Fe²⁺). 2+ In the cathode reaction, hydrogen ions H+ + The ferrous ion gains electrons and is reduced to hydrogen gas (H2). Subsequently, the ferrous ion (Fe)... 2+ With bicarbonate HCO3 - Ferrous carbonate (FeCO3) is formed, which is then oxidized by oxygen (O2) in the water to ferric hydroxide (Fe(OH)3), ultimately forming rust (FeO3·nH2O), leading to pipe corrosion. Based on this corrosion principle, this device is installed in the high-carbonate concentration area within 1 meter of the water tower on the inlet and outlet pipes of the circulating water system. By using magnesium rod 1 as a sacrificial anode instead of the pipe body material, it preferentially reacts with hydrogen ions (H2O) generated by the ionization of carbonic acid. + An anodizing reaction occurs. This design is based on the principle of electrochemical protection, utilizing the fact that the electrode potential of magnesium (Mg) is significantly lower than that of iron. In the micro-battery effect, the magnesium rod preferentially releases electrons to generate magnesium ions (Mg). 2+ This blocks hydrogen ions (H+) in the water. + The cathodic reduction process of metal pipelines effectively delays or inhibits the electrochemical corrosion process of the pipelines.

[0021] Example 1

[0022] The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes proposed in this embodiment, such as... Figure 1As shown, the device includes a magnesium rod 1, which is mounted on a circulating water pipe via a fixing component 2. A conductive connector 4 is fixed to one end of the magnesium rod 1 outside the circulating water pipe. The device also includes a monitoring device 5, which is fixed to the fixing component 2. The magnesium rod 1 has a solid cylindrical structure and a contact groove 11 is etched on its surface. The fixing component 2 includes a fixing bracket 21, which has a hollow cylindrical structure. A bracket mounting hole 22 is provided on the circulating water pipe. The fixing bracket 21 is inserted into the bracket mounting hole 22 and welded to the circulating water pipe at the bracket mounting hole 22. Several connecting bolts 23 are provided on the side of the fixing bracket 21. The several connecting bolts 23 are located outside the circulating water pipe and are used to fix the magnesium rod 1. The magnesium rod 1 is located inside the fixing bracket 21. The bracket mounting hole 22, the fixing bracket 21, and the magnesium rod 1 are all located at a position one-quarter to one-third away from the inlet and outlet of the circulating water pipe.

[0023] Example 2

[0024] The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes proposed in this embodiment, such as... Figure 1 As shown, it includes a magnesium rod 1, which is installed on the circulating water pipe by a fixing component 2. A conductive connector 4 is fixed to one end of the magnesium rod 1 outside the circulating water pipe. It also includes a monitoring device 5, which is fixed to the fixing component 2.

[0025] Magnesium rod 1 has a solid cylindrical structure, and contact grooves 11 are etched on the surface of magnesium rod 1.

[0026] The fixing component 2 includes a fixing bracket 21, which is a hollow cylindrical structure. A bracket mounting hole 22 is provided on the circulating water pipe. The fixing bracket 21 is inserted into the bracket mounting hole 22 and welded to the circulating water pipe at the bracket mounting hole 22. Several connecting bolts 23 are provided on the side of the fixing bracket 21. The several connecting bolts 23 are located outside the circulating water pipe and are used to fix the magnesium rod 1 together. The magnesium rod 1 is located inside the fixing bracket 21.

[0027] The mounting hole 22, the fixed bracket 21 and the magnesium rod 1 are all located at a distance of one-quarter to one-third from the inlet and outlet of the circulating water pipe; the surface of the fixed bracket 21 is coated with an anti-rust layer 24.

[0028] Example 3

[0029] The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes proposed in this embodiment, such as... Figure 1 As shown, it includes a magnesium rod 1, which is installed on the circulating water pipe by a fixing component 2. A conductive connector 4 is fixed to one end of the magnesium rod 1 outside the circulating water pipe. It also includes a monitoring device 5, which is fixed to the fixing component 2.

[0030] Magnesium rod 1 has a solid cylindrical structure, and contact grooves 11 are etched on the surface of magnesium rod 1.

[0031] The fixing component 2 includes a fixing bracket 21, which is a hollow cylindrical structure. A bracket mounting hole 22 is provided on the circulating water pipe. The fixing bracket 21 is inserted into the bracket mounting hole 22 and welded to the circulating water pipe at the bracket mounting hole 22. Several connecting bolts 23 are provided on the side of the fixing bracket 21. The several connecting bolts 23 are located outside the circulating water pipe and are used to fix the magnesium rod 1 together. The magnesium rod 1 is located inside the fixing bracket 21.

[0032] The bracket mounting hole 22, the fixed bracket 21 and the magnesium rod 1 are all located at a distance of one-quarter to one-third from the inlet and outlet of the circulating water pipe; the surface of the fixed bracket 21 is coated with an anti-rust layer 24.

[0033] The fixed bracket 21 is connected to the circulating water pipe, and both the inner and outer walls of the circulating water pipe are coated with a protective coating 25.

[0034] Example 4

[0035] The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes proposed in this embodiment, such as... Figure 1 As shown, it includes a magnesium rod 1, which is installed on the circulating water pipe by a fixing component 2. A conductive connector 4 is fixed to one end of the magnesium rod 1 outside the circulating water pipe. It also includes a monitoring device 5, which is fixed to the fixing component 2.

[0036] Magnesium rod 1 has a solid cylindrical structure, and contact grooves 11 are etched on the surface of magnesium rod 1.

[0037] The fixing component 2 includes a fixing bracket 21, which is a hollow cylindrical structure. A bracket mounting hole 22 is provided on the circulating water pipe. The fixing bracket 21 is inserted into the bracket mounting hole 22 and welded to the circulating water pipe at the bracket mounting hole 22. Several connecting bolts 23 are provided on the side of the fixing bracket 21. The several connecting bolts 23 are located outside the circulating water pipe and are used to fix the magnesium rod 1 together. The magnesium rod 1 is located inside the fixing bracket 21.

[0038] The bracket mounting hole 22, the fixed bracket 21 and the magnesium rod 1 are all located at a distance of one-quarter to one-third from the inlet and outlet of the circulating water pipe; the surface of the fixed bracket 21 is coated with an anti-rust layer 24.

[0039] The fixed bracket 21 is connected to the circulating water pipe, and both the inner and outer walls of the circulating water pipe are coated with a protective coating 25.

[0040] The conductive connector 4 is made of copper metal. The magnesium rod 1 is fixed to the conductive connector 4 at one end outside the circulating water pipe through the connecting conductor 41.

[0041] Example 5

[0042] The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes proposed in this embodiment, such as... Figure 1 As shown, it includes a magnesium rod 1, which is installed on the circulating water pipe by a fixing component 2. A conductive connector 4 is fixed to one end of the magnesium rod 1 outside the circulating water pipe. It also includes a monitoring device 5, which is fixed to the fixing component 2.

[0043] Magnesium rod 1 has a solid cylindrical structure, and contact grooves 11 are etched on the surface of magnesium rod 1.

[0044] The fixing component 2 includes a fixing bracket 21, which is a hollow cylindrical structure. A bracket mounting hole 22 is provided on the circulating water pipe. The fixing bracket 21 is inserted into the bracket mounting hole 22 and welded to the circulating water pipe at the bracket mounting hole 22. Several connecting bolts 23 are provided on the side of the fixing bracket 21. The several connecting bolts 23 are located outside the circulating water pipe and are used to fix the magnesium rod 1 together. The magnesium rod 1 is located inside the fixing bracket 21.

[0045] The bracket mounting hole 22, the fixed bracket 21 and the magnesium rod 1 are all located at a distance of one-quarter to one-third from the inlet and outlet of the circulating water pipe;

[0046] The surface of the fixed bracket 21 is coated with an anti-rust layer 24;

[0047] The fixed bracket 21 is connected to the circulating water pipe, and both the inner and outer walls of the circulating water pipe are coated with a protective coating 25.

[0048] The conductive connector 4 is made of copper metal. The magnesium rod 1 is fixed to the conductive connector 4 at one end outside the circulating water pipe through the connecting conductor 41.

[0049] Sealing gaskets 42 are provided at the connection points of the connecting conductor 41 with the magnesium rod 1 and the conductive connector 4, respectively.

[0050] Example 6

[0051] The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes proposed in this embodiment, such as... Figure 1 As shown, it includes a magnesium rod 1, which is installed on the circulating water pipe by a fixing component 2. A conductive connector 4 is fixed to one end of the magnesium rod 1 outside the circulating water pipe. It also includes a monitoring device 5, which is fixed to the fixing component 2.

[0052] Magnesium rod 1 has a solid cylindrical structure, and contact grooves 11 are etched on the surface of magnesium rod 1.

[0053] The fixing component 2 includes a fixing bracket 21, which is a hollow cylindrical structure. A bracket mounting hole 22 is provided on the circulating water pipe. The fixing bracket 21 is inserted into the bracket mounting hole 22 and welded to the circulating water pipe at the bracket mounting hole 22. Several connecting bolts 23 are provided on the side of the fixing bracket 21. The several connecting bolts 23 are located outside the circulating water pipe and are used to fix the magnesium rod 1 together. The magnesium rod 1 is located inside the fixing bracket 21.

[0054] The bracket mounting hole 22, the fixed bracket 21 and the magnesium rod 1 are all located at a distance of one-quarter to one-third from the inlet and outlet of the circulating water pipe;

[0055] The surface of the fixed bracket 21 is coated with an anti-rust layer 24;

[0056] The fixed bracket 21 is connected to the circulating water pipe, and both the inner and outer walls of the circulating water pipe are coated with a protective coating 25.

[0057] The conductive connector 4 is made of copper metal. The magnesium rod 1 is fixed to the conductive connector 4 at one end outside the circulating water pipe through the connecting conductor 41.

[0058] Sealing gaskets 42 are provided at the connection points of the connecting conductor 41 with the magnesium rod 1 and the conductive connector 4, respectively.

[0059] The monitoring device 5 includes a corrosion detection lens 51, which is mounted on a fixed bracket 21 and connected to a signal transmission line 52. It also includes an external monitoring device 53, which is connected to the corrosion detection lens 51 via the signal transmission line 52 and is located outside the circulating water pipe.

Claims

1. An electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes, characterized in that, The device includes a magnesium rod (1), which is installed on a circulating water pipe by a fixing component (2). A conductive connector (4) is fixed to one end of the magnesium rod (1) outside the circulating water pipe. The device also includes a monitoring device (5), which is fixed to the fixing component (2).

2. The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes according to claim 1, characterized in that, The magnesium rod (1) has a solid cylindrical structure, and the surface of the magnesium rod (1) is etched with contact grooves (11).

3. The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes according to claim 1, characterized in that, The fixing component (2) includes a fixing bracket (21), which is a hollow cylindrical structure. The circulating water pipe has a bracket mounting hole (22). The fixing bracket (21) is inserted into the bracket mounting hole (22). The fixing bracket (21) is welded to the circulating water pipe at the bracket mounting hole (22). The side of the fixing bracket (21) is provided with several connecting bolts (23). The several connecting bolts (23) are located outside the circulating water pipe. The several connecting bolts (23) are used to fix the magnesium rod (1). The magnesium rod (1) is located inside the fixing bracket (21).

4. The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes according to claim 3, characterized in that, The bracket mounting hole (22), the fixed bracket (21) and the magnesium rod (1) are all located at a distance of one-quarter to one-third from the inlet and outlet of the circulating water pipe.

5. The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes according to claim 3, characterized in that, The surface of the fixed bracket (21) is coated with an anti-rust layer (24).

6. The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes according to claim 3, characterized in that, The fixed bracket (21) is connected to the circulating water pipe, and both the inner and outer walls of the circulating water pipe are coated with a protective coating (25).

7. The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes according to claim 3, characterized in that, The conductive connector (4) is a copper metal conductive connector, and the magnesium rod (1) is fixed to the conductive connector (4) at one end outside the circulating water pipe through a connecting conductor (41).

8. The electrochemical protection device based on the sacrificial characteristics of magnesium metal anode according to claim 7, characterized in that, Sealing gaskets (42) are provided at the connection points between the two ends of the connecting conductor (41) and the magnesium rod (1) and the conductive connector (4), respectively.

9. The electrochemical protection device based on the sacrificial characteristics of magnesium metal anodes according to claim 3, characterized in that, The monitoring device (5) includes a corrosion detection lens (51), which is mounted on the fixed bracket (21). A signal transmission line (52) is connected to the corrosion detection lens (51). It also includes an external monitoring device (53), which is connected to the external monitoring device (53) via the signal transmission line (52). The external monitoring device (53) is located outside the circulating water pipe.

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