Low-cost reusable full-sea-depth equipment sacrificial anode and manufacturing method thereof

Abstract

The invention discloses an ocean engineering and underwater robot equipment technology, and aims to provide a low-cost reusable full-sea-depth equipment sacrificial anode and a manufacturing method thereof, the technical scheme is that the sacrificial anode comprises a sacrificial anode body, the sacrificial anode body comprises a shell made of a titanium alloy material, excellent corrosion resistance and structural strength are achieved, and the device is used for being installed on equipment; the zinc block serves as a sacrificial anode, is fixed in the shell and is used for being in contact with seawater to generate electrochemical reaction; the polyurethane adhesive is used for filling and controlling the corrosion sectional area of the zinc block and enhancing the stability of the whole structure; the device has the advantages of flexible installation design, adoption of low-cost materials, guarantee of structural stability and corrosion resistance, reusability, remarkable reduction of the maintenance cost, suitability for various marine equipment, simple and reasonable structure, convenience in manufacturing, simplicity and convenience in operation, avoidance of defects in the prior art, and suitability for popularization, implementation and application; the invention is suitable for the technical field of ocean engineering and underwater robot equipment.

Description

Technical Field

[0001] The present invention relates to a marine engineering and underwater robot equipment technology, and more specifically, to a low-cost, reusable, full-sea-depth equipment sacrificial anode and a manufacturing method thereof. Background Art

[0002] Sacrificial anode is an electrochemical protection technology that prevents corrosion of the protected metal by connecting a metal material with a more negative potential than the protected metal to the protected metal. In this method, the metal with a lower potential (i.e., the anode) will gradually dissolve, while the metal with a higher potential (i.e., the cathode) is protected.

[0003] The current underwater sacrificial anode structure is too simple to be reused, and the installation method is not flexible enough, which brings inconvenience to underwater scientific research operations. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a low-cost, reusable, full-sea-depth sacrificial anode and a method for manufacturing the same.

[0005] To achieve the above object, the present invention provides the following technical solution: a low-cost, reusable, full-sea-depth sacrificial anode, comprising a sacrificial anode body, the sacrificial anode body comprising:

[0006] The shell is made of titanium alloy material, which has excellent corrosion resistance and structural strength and is used for installation with equipment;

[0007] A zinc block, which serves as a sacrificial anode and is fixed in the housing, and is used for contacting with seawater to undergo an electrochemical reaction;

[0008] Polyurethane glue is used to fill the cross-sectional area to control the corrosion of the zinc block and enhance the stability of the overall structure.

[0009] The present invention is further configured as follows: the cross section of the shell is in a concave shape as a whole, and an integrally formed mounting portion is coaxially arranged on the outer end surface of the shell, and the inside of the shell is a step surface, including a step surface 1 and a step surface 2, and the step surface 1 is close to the inner end surface of the shell, and the step surface 1 is provided with an internal thread for connecting with the zinc block;

[0010] The zinc block is T-shaped as a whole, and an external thread matching the internal thread is arranged around the maximum outer diameter of the zinc block, and a coaxial through hole is opened through the zinc block.

[0011] The present invention is further configured as follows: the polyurethane glue includes a first part and a second part, the first part is filled in the through hole of the zinc block, and the second part is filled between the zinc block and the shell through a simple mold, so that the end face of the zinc block with the smallest outer diameter is exposed.

[0012] The present invention is further configured as follows: the diameter of step surface one is smaller than the diameter of step surface two, the length of step surface one is equal to the length of step surface two, and the length of the minimum outer diameter of the zinc block is greater than the length of step surface two.

[0013] The present invention is further configured as follows: the mechanical life of the sacrificial anode body is not less than 500 times, the operating temperature range is -30°C to +80°C, and the hydrostatic pressure is 127MPa.

[0014] The present invention is further configured as follows: the surface of the zinc block is specially treated to improve its adhesion with the polyurethane adhesive and enhance the stability of the overall structure.

[0015] The present invention is further configured as follows: the size of the internal thread can be customized according to actual conditions, so as to facilitate flexible installation.

[0016] A method for manufacturing a low-cost, reusable, full-sea-depth sacrificial anode, characterized in that it comprises the following steps:

[0017] S1. Material selection: titanium alloy is selected as the material for manufacturing the shell, zinc block is selected as the material for manufacturing the internal sacrificial anode, and polyurethane glue is selected as the filling material;

[0018] S2. Processing of shell and zinc block: The shell and zinc block are formed by die casting or processing to ensure that they meet the design requirements, and the shell and zinc block are cleaned and pre-treated to improve the adhesion of the subsequent filling polyurethane glue;

[0019] S3. Preparation of polyurethane adhesive: prepare the formula of polyurethane adhesive according to the needs to ensure its bonding strength and corrosion resistance;

[0020] S4. Assembly: Connect the processed zinc block to the shell with threads to ensure a firm connection;

[0021] S5. Filling polyurethane glue: using a syringe to evenly fill the prepared polyurethane glue into the through hole of the zinc block until it is filled and wait for it to solidify to form the first part, and then using a simple mold to evenly cast the zinc block and the shell with the polyurethane glue, so that the cast polyurethane glue is solidified to form the second part, the maximum diameter of the polyurethane glue of the second part is equal to the diameter of the outer cylindrical surface of the shell, and the end face of the polyurethane glue of the second part is on the same horizontal plane as the end face of the minimum outer diameter of the zinc block, and the simple mold can be removed after solidification;

[0022] S6. Testing: Conduct corresponding tests on the cured sacrificial anode body to ensure that it meets the design standards;

[0023] S7. Marking and packaging: Mark and package qualified sacrificial anode bodies and attach instructions for use.

[0024] The present invention is further configured as follows: the test in S6 includes:

[0025] Hydrostatic pressure test: simulates the marine environment and tests the performance of the sacrificial anode body under 127MPa hydrostatic pressure;

[0026] Corrosion test: Place the sacrificial anode body in a solution simulating seawater and immerse it, periodically test its corrosion status and evaluate its corrosion resistance;

[0027] Mechanical performance test: By applying load, check whether the mechanical life of the sacrificial anode body reaches more than 500 times.

[0028] The beneficial effects of the present invention are:

[0029] 1. Compared with the prior art, the low-cost, reusable, full-sea-depth sacrificial anode of the present invention is designed with full consideration of the need for flexible installation. The threaded connection design between the shell and the zinc block not only enhances the stability of the structure, but also allows it to be adjusted according to different equipment and environments in actual applications. The size of the external thread can be customized according to specific circumstances. This feature enables the sacrificial anode to adapt to a variety of installation conditions, facilitating users to quickly install and replace at different ocean depths and equipment configurations. This flexibility greatly improves the adaptability of the equipment. Users do not need to develop dedicated sacrificial anodes for each different application scenario, thereby saving manpower and material resources. Therefore, the flexible installation characteristics of the present invention not only meet the use requirements in complex marine environments, but also provide great convenience for users and ensure the efficient operation of the equipment.

[0030] 2. The low-cost, reusable, full-sea-depth equipment sacrificial anode manufacturing method and material selection of the present invention give it a significant economic advantage in the market; first, the outer shell is made of titanium alloy material. Although the raw material price of titanium alloy is relatively high, its superior corrosion resistance and high strength will effectively extend the service life and reduce the need for frequent replacement, thereby reducing long-term operating costs. At the same time, the zinc block, as a sacrificial anode, can effectively protect other components from corrosion during electrochemical reactions, and its material cost is relatively low. The use of polyurethane glue not only improves the stability of the structure, but also has good bonding properties, thereby improving the overall durability; the reasonable combination of these materials significantly reduces the production and maintenance costs, and users can enjoy higher cost-effectiveness during use. In addition, due to the reusable design, when replacing the zinc block, the user only needs to replace the zinc block and perform simple maintenance, without having to replace the entire block, further saving maintenance costs and improving economic benefits.

[0031] 3. The present invention has excellent performance in reusability and provides support for environmental protection. Traditional sacrificial anodes cannot be reused during use and often need to be replaced frequently, which increases the environmental burden. The design of the present invention allows the user to replace the zinc block after the zinc block is consumed and continue to use the shell, avoiding the scrapping of the entire piece. This reusable design concept not only reduces waste generation, but also reduces resource waste, which meets the requirements of sustainable development. At the same time, the selection and treatment process of polyurethane glue are optimized so that it will not have a negative impact on the marine environment during use, thereby further protecting the marine ecosystem. Through this environmentally friendly design and manufacturing method, the present invention can actively respond to global environmental protection while meeting industrial needs.

[0032] 4. The present invention not only pursues flexibility and economy in design, but also pays more attention to the reliable guarantee of overall performance. The mechanical life of the sacrificial anode body is not less than 500 times, the operating temperature range is wide (-30°C to +80°C), and it can withstand a hydrostatic pressure of up to 127MPa, ensuring that it can still work stably in extreme marine environments. This high-standard performance requirement enables extremely high reliability in practical applications and greatly reduces the risk of failure. In addition, the special treatment technology of the zinc block surface improves its adhesion with polyurethane glue and further enhances the stability of the overall structure; the structure is simple and reasonable, the manufacture is convenient, the operation is simple, and the defects in the prior art are avoided, which is suitable for popularization and implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural diagram of the low-cost, reusable, full-sea-depth sacrificial anode equipment of the present invention.

[0034] Figure 2 This is a cross-sectional structural diagram of the low-cost, reusable, full-sea-depth sacrificial anode equipment of the present invention.

[0035] Figure 1-2 Figure numerals: 1. shell; 2. zinc block; 3. mounting portion; 4. step surface one; 5. step surface two; 6. through hole; 7. first part; 8. second part. DETAILED DESCRIPTION

[0036] Reference Figure 1-2 The low-cost, reusable, full-sea-depth sacrificial anode and its manufacturing method embodiment of the present invention are further described.

[0037] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0038] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0039] Figure 1 to Figure 2 A low-cost, reusable, full-sea-depth sacrificial anode is shown, comprising a sacrificial anode body, the sacrificial anode body comprising:

[0040] The housing 1 is made of titanium alloy material, has excellent corrosion resistance and structural strength, and is used for installation with equipment;

[0041] The zinc block 2, serving as a sacrificial anode and fixed in the housing 1, is used for contacting with seawater to generate an electrochemical reaction;

[0042] Polyurethane glue, used to fill the cross-sectional area of ​​the zinc block 2 to control corrosion and enhance the stability of the overall structure;

[0043] The purpose of sacrificial anode is achieved by contacting the seawater with the zinc block 2.

[0044] The low-cost, reusable, full-sea-depth equipment sacrificial anode manufacturing method and material selection of the present invention give it a significant economic advantage in the market; first, the shell 1 is made of titanium alloy material. Although the raw material price of titanium alloy is relatively high, its superior corrosion resistance and high strength will effectively extend the service life and reduce the need for frequent replacement, thereby reducing long-term operating costs. At the same time, the zinc block 2 acts as a sacrificial anode, which can effectively protect other components from corrosion in the electrochemical reaction, and its material cost is relatively low.

[0045] The cross section of the shell 1 is in a concave shape as a whole, and an integrally formed mounting portion 3 is coaxially arranged on the outer end surface of the shell 1. The inside of the shell 1 is a step surface, including a step surface 1 4 and a step surface 2 5, and the step surface 1 4 is close to the inner end surface of the shell 1. The step surface 1 4 is provided with an internal thread for connecting with the zinc block 2;

[0046] The zinc block 2 is T-shaped as a whole, and an external thread matching the internal thread is provided around the maximum outer diameter of the zinc block 2. A coaxial through hole 6 is provided through the zinc block 2. The size of the internal thread can be customized according to actual conditions, so as to facilitate flexible installation.

[0047] Compared with the prior art, the low-cost, reusable, full-sea-depth sacrificial anode of the present invention is designed with full consideration of the need for flexible installation. The threaded connection design between the housing 1 and the zinc block 2 not only enhances the stability of the structure, but also allows it to be adjusted according to different equipment and environments in actual applications. The size of the external thread can be customized according to specific circumstances. This feature enables the sacrificial anode to adapt to a variety of installation conditions, facilitating users to quickly install and replace at different ocean depths and equipment configurations. This flexibility greatly improves the adaptability of the equipment. Users do not need to develop dedicated sacrificial anodes for each different application scenario, thereby saving manpower and material resources. Therefore, the flexible installation characteristics of the present invention not only meet the use requirements in complex marine environments, but also provide users with great convenience and ensure the efficient operation of the equipment.

[0048] The polyurethane glue comprises a first part 7 and a second part 8, wherein the first part 7 is filled in the through hole 6 of the zinc block 2, and the second part 8 is filled between the zinc block 2 and the shell through a simple mold, so that the end surface of the zinc block 2 with the smallest outer diameter is exposed.

[0049] The use of polyurethane glue not only improves the stability of the structure, but also has good bonding properties, thereby improving the overall durability; the reasonable combination of these materials significantly reduces the production and maintenance costs, and users can enjoy higher cost performance during use. In addition, since it is designed to be reusable, when the user replaces the zinc block 2, they only need to replace the zinc block 2 and perform simple maintenance without having to replace the entire block, which further saves maintenance costs and improves economic benefits.

[0050] The diameter of the step surface 1 4 is smaller than the diameter of the step surface 2 5 , the length of the step surface 1 4 is equal to the length of the step surface 2 5 , and the length of the minimum outer diameter of the zinc block 2 is greater than the length of the step surface 2 5 ;

[0051] The mechanical life of the sacrificial anode body is not less than 500 times, the operating temperature range is -30°C to +80°C, and the hydrostatic pressure is 127MPa;

[0052] The present invention not only pursues flexibility and economy in design, but also pays more attention to the reliable guarantee of overall performance. The mechanical life of the sacrificial anode body is not less than 500 times, the operating temperature range is wide (-30℃ to +80℃), and it can withstand a hydrostatic pressure of up to 127MPa, ensuring that it can still work stably in extreme marine environments. This high-standard performance requirement enables extremely high reliability in practical applications and greatly reduces the risk of failure.

[0053] The surface of the zinc block 2 is specially treated to improve its adhesion with the polyurethane adhesive and enhance the stability of the overall structure;

[0054] In addition, the special treatment technology on the surface of the zinc block 2 improves its adhesion with the polyurethane glue and further enhances the stability of the overall structure; the structure is simple and reasonable, easy to manufacture, easy to operate, avoiding the defects of the prior art, and is suitable for promotion and implementation.

[0055] A method for manufacturing a low-cost, reusable, full-sea-depth sacrificial anode, characterized in that it comprises the following steps:

[0056] S1. Material selection: titanium alloy is selected as the material for manufacturing the shell 1, zinc block 2 is selected as the material for manufacturing the internal sacrificial anode, and polyurethane glue is selected as the filling material;

[0057] S2. Processing of the shell 1 and the zinc block 2: The shell 1 and the zinc block 2 are formed by die casting or processing to ensure that they meet the design requirements, and the shell 1 and the zinc block 2 are cleaned and pre-treated to improve the adhesion of the subsequent filling polyurethane glue;

[0058] S3. Preparation of polyurethane adhesive: prepare the formula of polyurethane adhesive according to the needs to ensure its bonding strength and corrosion resistance;

[0059] S4, assembly: threading the processed zinc block 2 and the housing 1 to ensure that the connection is firm;

[0060] S5, filling polyurethane glue: using a syringe to evenly fill the prepared polyurethane glue into the through hole 6 of the zinc block 2 until it is filled and wait for it to solidify to form a first part 7, and then using a simple mold to evenly cast the zinc block 2 and the shell with the polyurethane glue, so that the cast polyurethane glue is solidified to form a second part 8, the maximum diameter of the polyurethane glue of the second part 8 is equal to the diameter of the outer cylindrical surface of the shell 1, and the end face of the polyurethane glue of the second part 8 is on the same horizontal plane as the end face of the minimum outer diameter of the zinc block 2, and the simple mold can be removed after solidification;

[0061] S6. Testing: Conduct corresponding tests on the cured sacrificial anode body to ensure that it meets the design standards;

[0062] S7. Marking and packaging: Mark and package the qualified sacrificial anode bodies and attach instructions for use;

[0063] The tests in S6 include:

[0064] Hydrostatic pressure test: simulates the marine environment and tests the performance of the sacrificial anode body under 127MPa hydrostatic pressure;

[0065] Corrosion test: Place the sacrificial anode body in a solution simulating seawater and immerse it, periodically test its corrosion status and evaluate its corrosion resistance;

[0066] Mechanical performance test: By applying load, check whether the mechanical life of the sacrificial anode body reaches more than 500 times.

[0067] In the present invention, excellent reusability is achieved, which provides support for environmental protection. Traditional sacrificial anodes cannot be reused during use and often need to be replaced frequently, thereby increasing the environmental burden. The design of the present invention allows the user to replace the zinc block 2 after the zinc block 2 is consumed and continue to use the shell 1, thereby avoiding the scrapping of the entire piece. This reusable design concept not only reduces waste generation, but also reduces resource waste, which meets the requirements of sustainable development. At the same time, the selection and treatment process of the polyurethane glue are optimized so that it will not have a negative impact on the marine environment during use, thereby further protecting the marine ecosystem. Through this environmentally friendly design and manufacturing method, the present invention can actively respond to global environmental protection while meeting industrial needs.

[0068] The present invention also excels in safety and reliability. During the design process, various risk factors that may occur in the marine environment, such as high pressure, corrosion, collision, etc., are fully considered. The outer shell 1 is made of titanium alloy material, which not only has strong corrosion resistance, but also has excellent structural stability under high pressure conditions, and can effectively protect internal components from damage. In addition, the design of the zinc block 2 enables it to maintain stable release during the electrochemical reaction and will not produce excessive hydrogen, thereby reducing the risk of explosion. In actual applications, it has undergone rigorous testing to ensure that it can still work reliably under various extreme conditions, which is crucial to ensuring the safety of marine engineering.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-cost, reusable, full-sea-depth sacrificial anode, characterized by: The invention comprises a sacrificial anode body, the sacrificial anode body comprising: The housing (1) is made of titanium alloy material, has excellent corrosion resistance and structural strength, and is used for installation with equipment; A zinc block (2), serving as a sacrificial anode and fixed in the housing (1), for contacting with seawater to generate an electrochemical reaction; The polyurethane glue is used to fill the cross-sectional area of ​​the zinc block (2) to control corrosion and enhance the stability of the overall structure.

2. A low-cost, reusable, full-sea-depth sacrificial anode according to claim 1, characterized in that: The cross section of the shell (1) is generally concave-shaped, and an integrally formed mounting portion (3) is coaxially arranged on the outer end surface of the shell (1). The inside of the shell (1) is a stepped surface, including a first stepped surface (4) and a second stepped surface (5), and the first stepped surface (4) is close to the inner end surface of the shell (1). The first stepped surface (4) is provided with an internal thread for connecting with the zinc block (2); The zinc block (2) is T-shaped as a whole, and an external thread matching the internal thread is provided around the maximum outer diameter of the zinc block (2). A coaxial through hole (6) is provided through the zinc block (2).

3. A low-cost, reusable, full-sea-depth sacrificial anode according to claim 1 or 2, characterized in that: The polyurethane glue comprises a first part (7) and a second part (8), wherein the first part (7) is filled in the through hole (6) of the zinc block (2), and the second part (8) is filled between the zinc block (2) and the shell through a simple mold, so that the end face of the zinc block (2) with the smallest outer diameter is exposed.

4. A low-cost, reusable, full-sea-depth sacrificial anode according to claim 1 or 2, characterized in that: The diameter of the step surface one (4) is smaller than the diameter of the step surface two (5), the length of the step surface one (4) is equal to the length of the step surface two (5), and the length of the minimum outer diameter of the zinc block (2) is greater than the length of the step surface two (5).

5. The low-cost, reusable, full-sea-depth sacrificial anode according to claim 1, characterized in that: The mechanical life of the sacrificial anode body is not less than 500 times, the operating temperature range is -30°C to +80°C, and the hydrostatic pressure is 127MPa.

6. A low-cost, reusable, full-sea-depth sacrificial anode according to claim 1, characterized in that: The surface of the zinc block (2) is specially treated to improve its adhesion with the polyurethane adhesive and enhance the stability of the overall structure.

7. A low-cost, reusable, full-sea-depth sacrificial anode according to claim 2, characterized in that: The size of the internal thread can be customized according to actual conditions, which is convenient for flexible installation.

8. A method for manufacturing a low-cost, reusable, full-sea-depth sacrificial anode suitable for use in any one of claims 1 to 7, characterized in that: The steps include: S1. Material selection: titanium alloy is selected as the material for manufacturing the outer shell (1), zinc block (2) is selected as the material for manufacturing the internal sacrificial anode, and polyurethane glue is selected as the filling material; S2. Processing of the shell (1) and the zinc block (2): forming the shell (1) and the zinc block (2) by die casting or processing to ensure that they meet the design requirements, and cleaning and pre-treating the shell (1) and the zinc block (2) to improve the adhesion of the subsequent filling polyurethane glue; S3. Preparation of polyurethane adhesive: prepare the formula of polyurethane adhesive according to the needs to ensure its bonding strength and corrosion resistance; S4, assembling: screwing the processed zinc block (2) and the housing (1) to ensure that the connection is firm; S5, filling polyurethane glue: using a syringe to evenly fill the through hole (6) of the zinc block (2) with the prepared polyurethane glue until it is filled and wait for it to solidify to form the first part (7), and then using a simple mold to evenly cast the zinc block (2) and the shell with the polyurethane glue, so that the cast polyurethane glue is solidified to form the second part (8), the maximum diameter of the polyurethane glue of the second part (8) is equal to the diameter of the outer cylindrical surface of the shell (1), and the end face of the polyurethane glue of the second part (8) is on the same horizontal plane as the end face of the smallest outer diameter of the zinc block (2), and the simple mold can be removed after solidification; S6. Testing: Conduct corresponding tests on the cured sacrificial anode body to ensure that it meets the design standards; S7. Marking and packaging: Mark and package qualified sacrificial anode bodies and attach instructions for use.

9. The method for manufacturing a low-cost, reusable, full-sea-depth sacrificial anode according to claim 8, characterized in that: The tests in S6 include: Hydrostatic pressure test: simulates the marine environment and tests the performance of the sacrificial anode body under 127MPa hydrostatic pressure; Corrosion test: Place the sacrificial anode body in a solution simulating seawater and immerse it, periodically test its corrosion status and evaluate its corrosion resistance; Mechanical performance test: By applying load, check whether the mechanical life of the sacrificial anode body reaches more than 500 times.

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