High-efficiency long-life sacrificial anode structure

Abstract

The utility model relates to a high-efficiency long-life sacrificial anode structure, which comprises flat iron and a sacrificial anode, an upper flat iron and a lower flat iron are arranged in the middle of the flat iron, the upper flat iron and the lower flat iron are embedded in the sacrificial anode, and the end parts of the upper flat iron and the lower flat iron are converged in the sacrificial anode and extend to the outer sides of the two ends of the sacrificial anode to form flat iron exposed ends. The sacrificial anode has the beneficial effects that the two pieces of flat iron are respectively arranged at different heights in the sacrificial anode, are embedded at different heights in the sacrificial anode and extend out of the bottoms of the two ends of the sacrificial anode, so that the fixing effect on the sacrificial anode is improved, and the sacrificial anode is not easy to fall off in the later period of dissolution; a certain number of holes are drilled in the two pieces of flat iron in the sacrificial anode, the hole diameter is determined according to the size of the flat iron, adhesion of the sacrificial anode is further improved, and the sacrificial anode can be effectively prevented from falling off.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sacrifice anode, especially including a kind of high-efficiency long-life sacrifice anode structure. BACKGROUND

[0002] In part project, circulating water pipeline exists inner wall corrosion serious problem, and partial pipe section appears multiple water leakage due to corrosion perforation. The existing sacrifice anode block, before reaching design life, it is easy to dissolve too fast or uneven dissolution, so that one of the upper and lower surfaces of sacrifice anode block flat iron has not had time to dissolve and falls off, is washed to system equipment such as valve, secondary filter screen by circulating water, to cause valve sealing surface damage, secondary filter screen rotating hopper jam.

[0003] To cope with the above risks, sacrifice anode block structure needs to be designed specifically to solve the defects of uneven dissolution, easy to fall off and short service life of sacrifice anode. INVENTION CONTENTS

[0004] The utility model aims at overcoming the deficiencies in the prior art, and provides a kind of high-efficiency long-life sacrifice anode structure.

[0005] This high-efficiency long-life sacrifice anode structure includes: flat iron and sacrifice anode, upper flat iron and lower flat iron are arranged in the middle part of flat iron, and upper flat iron and lower flat iron are embedded in sacrifice anode, and the end of upper flat iron and lower flat iron converges in sacrifice anode and extends to the outside of both ends of sacrifice anode, to form flat iron exposed end;Flat iron exposed end is used for welding.

[0006] As preferred, flat iron opening is formed in the upper flat iron and lower flat iron.

[0007] As preferred, the height of upper flat iron and lower flat iron is higher than the height of flat iron exposed end, and the bottom surface of flat iron exposed end is flush with the bottom surface of sacrifice anode.

[0008] As preferred, the cross section of sacrifice anode is trapezoidal, and upper flat iron and lower flat iron are embedded in sacrifice anode at different height positions in the center.

[0009] As preferred, the end of upper flat iron is bent to connect the end of lower flat iron, and the slope of the bent part of upper flat iron corresponds to the slope of the end surface of sacrifice anode.

[0010] As preferred, anticorrosive paint is coated on the lower bottom surface of sacrifice anode, and the total thickness of anticorrosive paint coating is greater than or equal to 0.2mm.

[0011] The utility model has the beneficial effects that:

[0012] 1) In this utility model, a flat iron is set at different heights inside the sacrificial anode. The two flat irons are buried at different heights inside the sacrificial anode and extend from the bottom of both ends of the sacrificial anode, which improves the fixing effect of the sacrificial anode and makes it less likely to fall off in the later stage of the sacrificial anode dissolution.

[0013] 2) This utility model drills a certain number of holes in the two flat irons inside the sacrificial anode. The hole diameter is determined according to the size of the flat irons, which further increases the adhesion of the sacrificial anode and can effectively prevent the sacrificial anode from falling off.

[0014] 3) This utility model uses the exposed end of the flat iron as the welding leg, and extends and specifies the length and bevel of the exposed end of the flat iron to make it more firmly welded to the pipeline, and ensures that it is not easy to fall off under complex working conditions inside the pipeline. Attached Figure Description

[0015] Figure 1 Schematic diagram of a sacrificial anode structure for high efficiency and long lifespan;

[0016] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0017] Figure 3 Top view of the sacrificial anode structure for high efficiency and long lifespan.

[0018] Explanation of reference numerals in the attached diagram: 1. Exposed end of flat iron; 11. Upper flat iron; 12. Lower flat iron; 13. Opening in flat iron; 2. Sacrificial anode. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that, for those skilled in the art, several modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0020] As one example, such as Figures 1 to 3 As shown, this high-efficiency, long-life sacrificial anode structure includes: a flat iron and a sacrificial anode 2. An upper flat iron 11 and a lower flat iron 12 are located in the middle of the flat iron. The upper flat iron 11 and the lower flat iron 12 are embedded within the sacrificial anode 2. The ends of the upper flat iron 11 and the lower flat iron 12 converge within the sacrificial anode 2 and extend to the outer sides of both ends of the sacrificial anode 2, forming exposed ends 1. The exposed ends 1 are welded to the pipeline. The bottom surface of the sacrificial anode 2 is coated with an anti-corrosion coating, the total thickness of which is greater than or equal to 0.2 mm.

[0021] The composition of the sacrificial anode 2 includes aluminum, magnesium, zinc, indium, etc. In this embodiment, the proportion of the main element components is redistributed, and the final capacity is required to be ≥2600 Ah / kg, the current efficiency is required to be ≥91, the consumption rate is required to be ≤3.24 kg / (A·a), and the dissolution morphology is uniform, so as to achieve the purpose of high efficiency and long service life. The sacrificial anode 2 with optimized structure and adjusted element proportion is installed on the inner wall of the seawater cooling water pipeline. The natural potential of the sacrificial anode 2 relative to the carbon steel pipeline is-0.8 to-1.05 V, which slows down the corrosion rate of the pipeline and protects the pipeline efficiently and for a long time.

[0022] The cross section of the sacrificial anode 2 is trapezoidal, specifically narrow at the top and wide at the bottom, as shown in Figure 2 The upper flat iron 11 and the lower flat iron 12 are buried at different height positions in the center of the sacrificial anode 2. Compared with the setting of the flat iron in the prior art sacrificial anode 2, the height of the flat iron is reduced, that is, the buried height of the lower flat iron 12 is close to the bottom of the sacrificial anode 2, and a flat iron, that is, the upper flat iron 11, is added at a certain height of the original sacrificial anode block flat iron. After improving the structure of the flat iron in the sacrificial anode 2, the flat iron and the sacrificial anode 2 increase the adhesion and are not easy to fall off.

[0023] The height of the upper flat iron 11 and the lower flat iron 12 is higher than the height of the flat iron exposed end 1, and the bottom surface of the flat iron exposed end 1 is flush with the bottom surface of the sacrificial anode 2. The end of the upper flat iron 11 is bent to connect the end of the lower flat iron 12, and the slope of the bent part of the upper flat iron 11 corresponds to the slope of the end surface of the sacrificial anode 2, which provides the maximum fixing effect for the whole sacrificial anode 2.

[0024] As shown in Figure 3 The upper flat iron 11 and the lower flat iron 12 are both provided with flat iron holes 13, and the hole diameter and the number of the flat iron holes 13 are also uniformly distributed according to the length and width dimensions of the flat iron of the sacrificial anode. The flat iron holes 13 can effectively increase the adhesion between the flat iron and the sacrificial anode 2, thereby increasing the bonding strength of the sacrificial anode 2 and the flat iron.

[0025] In this embodiment, 612 pieces of sacrificial anodes 2 are installed at the diameter D3040 of the connected pipe section of the seawater cooling water system of the power plant, one group every 7 meters, and two pieces in each group. 16 pieces of sacrificial anodes 2 are installed at the diameter D2200 of the pipe section, and two pieces of sacrificial anodes 2 are uniformly arranged in each pipe section.

Claims

1. A high efficiency long life sacrificial anode structure characterized by, The utility model relates to a flat iron and a sacrificial anode, the middle part of the flat iron is equipped with upper flat iron and lower flat iron, the upper flat iron and the lower flat iron are buried in the sacrificial anode, the end part of the upper flat iron and the lower flat iron converges in the sacrificial anode and extends to the outside of both ends of the sacrificial anode, forms the exposed end of the flat iron, and the exposed end of the flat iron is used for welding. The upper flat iron and the lower flat iron are both provided with flat iron holes.

2. The high-efficiency long-life sacrificial anode structure of claim 1, wherein The height of the upper flat iron and the lower flat iron is higher than the height of the exposed end of the flat iron, and the bottom surface of the exposed end of the flat iron is flush with the bottom surface of the sacrificial anode.

3. The high-efficiency long-life sacrificial anode structure of claim 1, wherein, The cross section of the sacrificial anode is trapezoidal, and the upper flat iron and the lower flat iron are buried in the central different height positions of the sacrificial anode.

4. The high-efficiency long-life sacrificial anode structure of claim 1, wherein, The end part of the upper flat iron is bent to connect the end part of the lower flat iron, and the slope of the bent part of the upper flat iron corresponds to the slope of the end surface of the sacrificial anode.

5. The high-efficiency long-life sacrificial anode structure of claim 4, wherein The lower bottom surface of the sacrificial anode is coated with anticorrosive paint, and the total thickness of the anticorrosive paint coating is greater than or equal to 0.2mm.

6. The high-efficiency long-life sacrificial anode structure of claim 1, wherein, ​

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