Anti-corrosion method for tower foot of power transmission tower and power transmission tower

Abstract

The invention belongs to the technical field of power transmission, and particularly relates to an anti-corrosion method for a tower foot of a power transmission tower and the power transmission tower. The anti-corrosion method for the tower foot of the power transmission tower comprises the following steps that cleaning is conducted, specifically, the tower foot of the power transmission tower is cleaned, dirt on the surface of the tower foot is removed, an anode protection block is arranged on the tower foot, and the anode protection block is tightly attached to the tower foot; coating is conducted, specifically, anti-corrosion paint is sprayed on the tower foot and the anode protection block, and a protection layer is formed; packaging, specifically, the tower feet are subjected to concrete packaging from the foundation ground, a concrete base is formed, and at least part of the tower feet are buried in the concrete base; and protection: installing a protective sleeve on the exposed part of the tower foot, connecting one end of the protective sleeve with the surface of the concrete abutment in a sealing manner, and extending the other end of the protective sleeve upwards along the tower foot in which the tower foot is positioned. The protection sleeve can resist impact of wind sand and foreign matter on the tower foot, the protection effect is further enhanced, the tower foot is prevented from being damaged by the outside, and finally the reliability and safety of the tower foot are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission, and in particular relates to an anti-corrosion method for a transmission tower foot and a transmission tower. Background Art

[0002] Currently, transmission towers are metal structures used to support and guide high-voltage transmission lines, usually made of steel. They play a vital role in the power system, ensuring that electricity is safely and reliably transmitted from power stations to substations and end users. Transmission towers have a variety of shapes and sizes to adapt to different voltage levels and terrain conditions. A typical transmission tower includes a tower body, shear supports and a pylon. The tower body is fixed to the ground, the shear supports are connected to the tower body to improve the stability of the tower body, and the pylon is set on the tower body to suspend the transmission line.

[0003] However, the transmission towers are set up in outdoor environments. Due to the influence of farmland cultivation, terrain changes and various construction activities, the tower feet of the transmission towers are often buried in the soil, causing the zinc layer protective film on the surface to be destroyed, and then corrosion occurs. For example, in windy weather, dust, sand and other hard objects on the ground will be blown up and hit the tower feet, destroying the galvanized protective layer on the surface of the tower feet, and at the same time accumulating at the tower feet. Over time, the dust and soil accumulated at the tower feet will cause long-term corrosion to the tower feet. Soil corrosion is fast and hidden, and it is difficult to directly observe the corrosion during the inspection process. Over time, in severe cases, the tower body of the transmission tower may corrode and break, reducing the overall bearing capacity of the transmission tower, posing a huge safety hazard. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a method for anti-corrosion of the base of a transmission tower, aiming to solve the problem of how to improve the reliability and safety of the transmission tower.

[0005] To achieve the above purpose, the technical solution adopted in this application is: In a first aspect, a method for anti-corrosion of a transmission tower foot is provided, which comprises the following steps: Cleaning: cleaning the tower foot of the transmission tower to remove dirt on the surface thereof, and setting an anode protection block on the tower foot, wherein the anode protection block is closely attached to the tower foot; Coating, spraying anti-corrosion coating on the tower foot and the anode protection block to form a protective layer; Encapsulation: encapsulating the tower foot with concrete from the foundation ground to form a concrete base, wherein the tower foot is at least partially buried in the concrete base; Protection, a protective sleeve is installed on the exposed part of the tower foot, one end of the protective sleeve is sealed and connected to the surface of the concrete base, and the other end of the protective sleeve extends upward along the tower foot and the tower foot is located in the protective sleeve.

[0006] In some embodiments, the protective cover includes a first clamp having a first groove and a second clamp having a second groove. The first clamp and the second clamp are respectively arranged on both sides of the tower foot, and the edges of the first clamp and the second clamp are docked so that the tower foot is located in the first groove and the second groove.

[0007] In some embodiments, the first fixture defines a first vent hole, and the first vent hole is connected to the first groove.

[0008] In some embodiments, the second fixture is provided with a second ventilation hole, and the second ventilation hole is connected to the second groove.

[0009] In some embodiments, in the coating step, the anti-corrosion coating is sprayed on the tower foot and the anode protection block by compressed air cold spraying, and the thickness of the protective layer ranges from 100 to 300 microns.

[0010] In some embodiments, in the cleaning step, the anode protection block is made of zinc, and the anode protection block has a length ranging from 110 to 130 mm, a width ranging from 20 to 40 mm, and a height ranging from 20 to 40 mm.

[0011] In some embodiments, in the packaging step, the height of the concrete base ranges from 300 to 500 mm.

[0012] In some embodiments, the anode protection block is welded on each side of the tower foot.

[0013] In some embodiments, the coating step further includes coating a nano-hydrophobic layer on the protective layer.

[0014] In a second aspect, a transmission tower is provided, comprising a tower body, a shear support connected to the tower body, and a hanger connected to the tower body, wherein the tower body has a tower foot, and the tower foot is anti-corrosion treated using the anti-corrosion method of the transmission tower foot.

[0015] The beneficial effect of the present application is that electrochemical corrosion is effectively prevented by cleaning the tower foot and setting an anode protection block. A protective layer is formed by spraying an anti-corrosion coating to improve the corrosion resistance of the tower foot. Furthermore, the concrete encapsulation provides physical protection to prevent dust from accumulating around the tower foot and to avoid the tower foot from being eroded by environmental factors. The installation of the protective cover can also resist the impact of wind and sand and foreign objects on the tower foot, further enhancing the protective effect, protecting the tower foot from external damage, and ultimately improving the reliability and safety of the tower foot. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a flow chart of the anti-corrosion method of the transmission tower foot provided in an embodiment of the present application; Figure 2 It is a three-dimensional structural schematic diagram of a tower foot and a protective cover provided in another embodiment of the present application; Figure 3 yes Figure 2 Schematic diagram of explosion of protective sleeve; Figure 4 It is a structural schematic diagram of a transmission tower provided in yet another embodiment of the present application.

[0018] Among them, the reference numerals in the figure are: 1011, tower foot; 101, tower body; 102, bracket; 103, shear support; 104, insulator; 105, concrete base; 20, protective cover; 21, first clamp; 211, first vent hole; 212, first groove; 22, second clamp; 221, second vent hole; 222, second groove; 201, end cover; DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present application.

[0020] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] See also Figures 1 to 3 The embodiment of the present application provides a method for anti-corrosion of a transmission tower foot, which comprises the following steps: S1: Cleaning, cleaning the tower foot 1011 of the transmission tower to remove dirt on its surface, and setting an anode protection block on the tower foot 1011, and the anode protection block is close to the tower foot 1011; it can be understood that the tower foot 1011 is cleaned with a detergent solution and a rust-removing acid solution to remove floating rust and dirt on the surface.

[0022] S2: coating, spraying anti-corrosion coating on the tower foot 1011 and the anode protection block to form a protective layer; the anti-corrosion coating has a certain density and water resistance, thereby preventing external water vapor from contacting the anode protection layer and the tower foot 1011. When the tower foot 1011 is corroded, the anode protection layer can be corroded first by discharge, thereby improving the corrosion resistance of the tower foot 1011.

[0023] S3: Encapsulation, encapsulating the tower foot 1011 with concrete from the foundation ground, and forming a concrete base 105, wherein the tower foot 1011 is at least partially buried in the concrete base 105; the concrete base 105 can form a rigid support for the tower foot 1011 and can also be isolated from the ground.

[0024] S4: Protection, a protective cover 20 is installed on the exposed part of the tower foot 1011, one end of the protective cover 20 is sealed and connected to the surface of the concrete base 105, and the other end of the protective cover 20 extends upward along the tower foot 1011, and the tower foot 1011 is located in the protective cover 20. A sealing ring can be provided at the connection between the protective cover 20 and the tower foot 1011 to prevent soil and dust from accumulating around the tower foot 1011.

[0025] The anti-corrosion method of the transmission tower foot 1011 provided in the embodiment of the present application effectively prevents electrochemical corrosion by cleaning the tower foot 1011 and setting an anode protection block. Then, a protective layer is formed by spraying an anti-corrosion coating to improve the corrosion resistance of the tower foot 1011. Furthermore, the concrete encapsulation provides physical protection to prevent dust from accumulating around the tower foot 1011 and to prevent the tower foot 1011 from being eroded by environmental factors. The installation of the protective cover 20 can also resist the impact of wind and sand and foreign objects on the tower foot 1011, further enhancing the protection effect, protecting the tower foot 1011 from external damage, and ultimately improving the reliability and safety of the tower foot 1011.

[0026] See also Figures 1 to 3Optionally, the cleaning agent solution is prepared by adding 13g of 664 cleaning agent, 40g of sodium hydroxide, and 12g of 105 detergent per liter of water. The rust-removing acid solution is a solution prepared by dissolving hydrochloric acid, sulfuric acid and urotropine in water, wherein the concentration of hydrochloric acid is 8%, the concentration of sulfuric acid is 0.1%, and the concentration of urotropine is 0.4%.

[0027] Optionally, a sealing groove may be opened on the upper surface of the concrete base 105 , and then the lower sleeve of the protective sleeve 20 may be disposed in the sealing groove, so that the protective sleeve 20 is sealed and fixed on the concrete base 105 .

[0028] See also Figures 1 to 3 In some embodiments, the protective cover 20 includes a first clamp 21 having a first groove 212 and a second clamp 22 having a second groove 222. The first clamp 21 and the second clamp 22 are respectively arranged on both sides of the tower foot 1011, and the edges of the first clamp 21 and the second clamp 22 are docked so that the tower foot 1011 is located in the first groove 212 and the second groove 222.

[0029] See also Figures 1 to 3 Optionally, the first clamp 21 and the second clamp 22 can be detachably connected by bolts and nuts, so as to facilitate the subsequent installation and maintenance, and also ensure that the protective cover 20 can be firmly covered on the tower foot 1011, so as to provide effective protection. Three through holes are provided at the joint of the first clamp 21 and the second clamp 22 for bolt installation, avoiding the problem of displacement and falling off of the protective cover 20, and enhancing the protection effect.

[0030] See also Figures 1 to 3 Optionally, the upper ends of the first clamp 21 and the second clamp 22 are both provided with end caps 201, the two end caps 201 are butted and surround the tower foot 1011, and the end caps 201 have escape holes for the tower foot 1011 to extend out, thereby preventing dust and sand from entering the protective cover. The escape hole can be in the shape of a circular hole, a polygonal hole, an elliptical hole or a special-shaped hole, so as to be adapted to the shape of the tower foot 1011.

[0031] In some embodiments, the first fixture 21 defines a first vent hole 211 , and the first vent hole 211 is connected to the first groove 212 .

[0032] Optionally, the first vent hole 211 is provided to facilitate air circulation in the protective cover 20, prevent moisture accumulation, and reduce the risk of corrosion of the tower foot 1011 due to moisture. The first vent hole 211 improves the air permeability of the protective cover 20, maintains a dry environment for the tower foot 1011, and further extends the service life of the tower foot 1011.

[0033] See also Figures 1 to 3 In some embodiments, the second fixture 22 is provided with a second vent hole 221 , and the second vent hole 221 is connected to the second groove 222 .

[0034] Optionally, the second vent hole 221 also facilitates air circulation in the protective cover 20, and when used in conjunction with the first vent hole 211, it further improves the air permeability and moisture resistance of the protective cover 20, ensuring that the tower foot 1011 is better protected in a dry environment and reducing the risk of corrosion.

[0035] In some embodiments, the protective sleeve 20 is made of polymer material, high-density polyethylene or glass fiber reinforced plastic.

[0036] See also Figures 1 to 3 Optionally, the material of the protective cover 20 is durable and has excellent anti-corrosion performance. Polymer materials and high-density polyethylene have excellent chemical corrosion resistance and are suitable for protection under various environmental conditions. Glass fiber reinforced plastic provides higher strength and durability, ensuring that the protective cover 20 can effectively protect the tower foot 1011 for a long time, and can also facilitate the observation of the corrosion of the tower foot 1011 during the inspection process.

[0037] See also Figures 1 to 3 In some embodiments, in the coating step, the anti-corrosion coating is sprayed on the tower foot 1011 and the anode protection block by compressed air cold spraying, and the thickness of the protective layer ranges from 100 to 300 microns.

[0038] Optionally, the compressed air cold spray method enables the anti-corrosion coating to be evenly covered on the tower foot 1011 and the anode protection block to form a uniform protective layer. The thickness of the protective layer can range from 100 microns, 110 microns, 120 microns, 200 microns, and 280 microns, which is not limited here and can be selected according to actual conditions. The cold spray method can improve the construction efficiency and the quality of the protective layer.

[0039] See also Figures 1 to 3 Optionally, the anti-corrosion coating is a zinc-rich anti-corrosion coating, wherein the zinc content is not less than 90%.

[0040] In some embodiments, in the cleaning step, the anode protection block is made of zinc, and the anode protection block has a length ranging from 110 to 130 mm, a width ranging from 20 to 40 mm, and a height ranging from 20 mm to 40 mm.

[0041] Optionally, the anode protection block is made of zinc, which has excellent anti-corrosion performance and can effectively prevent electrochemical corrosion. The reasonable size of the anode protection block ensures that it can fit closely to the tower foot 1011 and provide effective protection to prevent the tower foot 1011 from being damaged by electrochemical reactions.

[0042] See also Figures 1 to 3 In some embodiments, during the packaging step, the height of the concrete base 105 ranges from 300 to 500 mm.

[0043] Optionally, the height of the concrete base 105 can be 300 mm, 400 mm, 450 mm, or 500 mm, thereby providing sufficient physical protection to prevent environmental factors from corroding the tower foot 1011. The base formed by concrete encapsulation not only enhances the stability of the tower foot 1011, but also improves the durability and service life of the entire transmission tower.

[0044] See also Figures 1 to 3 Optionally, the concrete is an airtight concrete, which is prepared from the following materials in parts by weight: 177 parts water, 475 parts fine aggregate, 1276 parts coarse aggregate, 360 parts cement, 29 parts DC-C3 airtight agent, 20 parts silicate cement clinker, and 75 parts fly ash powder; the diameter of the fine aggregate particles is between 0.16 and 5 mm, and natural sand is generally used, such as river sand and valley sand. When natural sand is lacking, artificial sand ground from hard rocks can also be used; the diameter of the coarse aggregate particles is greater than 5 mm, and commonly used are crushed stone and pebbles.

[0045] In some embodiments, in the anti-corrosion method of the transmission tower foot 1011 , the anode protection block is welded on each side of the tower foot 1011 .

[0046] See also Figures 1 to 3 Optionally, an anode protection block is welded on each side to ensure that the tower foot 1011 is electrochemically protected in all directions, further improving the anti-corrosion effect. The risk of local corrosion is reduced, the protection of the tower foot 1011 is more comprehensive and uniform, and the service life of the tower foot 1011 is extended.

[0047] In some embodiments, the coating step further includes coating a nano-hydrophobic layer on the protective layer.

[0048] Optionally, the nano-hydrophobic layer has the following characteristics: Enhanced waterproofness: The nano-hydrophobic layer has extremely strong waterproof performance and can effectively prevent moisture from entering the metal surface of the tower foot 1011, thereby reducing moisture corrosion to the metal.

[0049] Self-cleaning effect: The surface of the nano-hydrophobic layer is very smooth, making it difficult for dirt and dust to adhere. This can reduce the accumulation of environmental pollutants, thereby further preventing corrosion.

[0050] Durability: The nano-hydrophobic layer has strong chemical stability and can withstand various harsh environmental conditions, such as acid rain, salt spray and ultraviolet radiation, thus increasing the service life of the transmission tower.

[0051] Anti-corrosion: The nano-hydrophobic layer is not only waterproof, but also resistant to erosion by various chemical corrosives, such as acid and alkali solutions and industrial pollutants, making the metal surface more stable.

[0052] Thermal stability: The nano-hydrophobic layer usually has good thermal stability and can maintain its protective performance in high temperature environments without failing due to temperature changes.

[0053] See also Figure 4 The present invention further proposes a transmission tower, which is anti-corrosion treated by the anti-corrosion method of the transmission tower foot 1011. The specific steps of the anti-corrosion method of the transmission tower foot 1011 refer to the above-mentioned embodiment. Since the transmission tower adopts all the technical solutions of all the above-mentioned embodiments, it also has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0054] In some embodiments, the transmission tower includes a tower body 101, a shear support 103 connected to the tower body 101, and a hanger 102 connected to the tower body 101, and a plurality of hangers 102 are arranged at intervals along the vertical direction.

[0055] See also Figure 4 The tower body 101 has a tower foot 1011, and the tower foot 1011 is treated with anti-corrosion using the anti-corrosion method of the tower foot 1011 of the transmission tower.

[0056] Optionally, by using the above anti-corrosion method for treatment, the durability and anti-corrosion performance of the transmission tower under various environmental conditions are ensured. The entire transmission tower structure is made more stable and reliable, further enhancing the overall performance and service life of the transmission tower. Multiple anti-corrosion measures are adopted so that the transmission tower can still maintain a good working condition in a harsh environment, reducing maintenance costs and frequency. Multiple brackets 102 are arranged in the height direction, and insulators 104 are arranged on the brackets 102.

[0057] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A method for anti-corrosion of a transmission tower foot, characterized in that: The following steps are involved: Cleaning: cleaning the tower foot of the transmission tower to remove dirt on the surface thereof, and setting an anode protection block on the tower foot, wherein the anode protection block is closely attached to the tower foot; Coating, spraying anti-corrosion coating on the tower foot and the anode protection block to form a protective layer; Encapsulation: encapsulating the tower foot with concrete from the foundation ground to form a concrete base, wherein the tower foot is at least partially buried in the concrete base; Protection, a protective sleeve is installed on the exposed part of the tower foot, one end of the protective sleeve is sealed and connected to the surface of the concrete base, and the other end of the protective sleeve extends upward along the tower foot and the tower foot is located in the protective sleeve.

2. The anti-corrosion method for the transmission tower foot according to claim 1, characterized in that: The protective cover comprises a first clamp having a first groove and a second clamp having a second groove. The first clamp and the second clamp are respectively arranged on both sides of the tower foot, and the edges of the first clamp and the second clamp are butted against each other so that the tower foot is located in the first groove and the second groove.

3. The anti-corrosion method for a transmission tower foot according to claim 2, characterized in that: The first clamp is provided with a first vent hole, and the first vent hole is connected to the first groove.

4. The anti-corrosion method for a transmission tower foot according to claim 2, characterized in that: The second fixture is provided with a second vent hole, and the second vent hole is connected to the second groove.

5. The anti-corrosion method for the transmission tower foot according to claim 1, characterized in that: In the coating step, the anti-corrosion coating is sprayed on the tower foot and the anode protection block by compressed air cold spraying, and the thickness of the protective layer ranges from 100 to 300 microns.

6. The anti-corrosion method for the transmission tower foot according to claim 1, characterized in that: In the cleaning step, the anode protection block is made of zinc, and the length of the anode protection block ranges from 110 to 130 mm, the width ranges from 20 to 40 mm, and the height ranges from 20 to 40 mm.

7. The anti-corrosion method for the transmission tower foot according to claim 1, characterized in that: In the packaging step, the height of the concrete base ranges from 300 to 500 mm.

8. The anti-corrosion method for the transmission tower foot according to any one of claims 1 to 6, characterized in that: The anode protection block is welded on each side of the tower foot.

9. The anti-corrosion method for the transmission tower foot according to any one of claims 1 to 6, characterized in that: The coating step also includes coating a nano-hydrophobic layer on the protective layer.

10. A transmission tower, characterized in that: The transmission tower comprises a tower body, a shear support connected to the tower body and a hanger connected to the tower body. The tower body has a tower foot. The tower foot is treated for corrosion using the anti-corrosion method for transmission tower feet as described in any one of claims 1 to 9.

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