JPH07228987A - Corrosion preventive electrode device of ocean sailing body - Google Patents

Abstract

PURPOSE:To provide a corrosion preventive electrode device of an ocean sailing body capable of decreasing sailing resistance and improving propulsion performance by decreasing the projecting area of the corrosion preventive electrode of the ocean sailing body from outside plating. CONSTITUTION:A stowage box 3 is embedded in the inner side of the outside plating 1 of the ocean sailing body and the outer side thereof is opened. A spring 4 for ejection is arranged in the bottom of this storage box 3 and a corrosion preventive electrode plate 2 consisting of Zn, Al, etc., is placed via an insulating sheet 6 thereon and the outside surface of this corrosion preventive electrode plate 2 is made flush with the outside plating 1. Fixing grids 7 are mounted at this outside surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marine vessel anticorrosion electrode device which is applied to an anticorrosion apparatus for marine vessels such as ships and marine structures.

[0002]

2. Description of the Related Art In an anticorrosive electrode device for a marine vehicle such as a ship or a marine structure, as shown in the front view of FIG. Zn, Al
The anticorrosion electrode plate 2 is fastened to the outer plate 1 with bolts 10 from the outside by applying the anticorrosion electrode plate 2 through the rubber insulating sheet 5 for enhancing the adhesion. Ions are generated by dissolving in seawater to prevent the outer plate 1 from rusting. At this time, the degree of dissolution, that is, the degree of anticorrosion is determined by the surface area of the anticorrosion electrode plate 2, which facilitates installation and replacement. In consideration of this, the anticorrosion electrode plate 2 is attached to the outer plate 1 so as to project therefrom, as shown in the figure. However, since the anticorrosion electrode plate 2 is mounted so as to project in this manner, not only does it cause great running resistance in a ship, especially a high-speed boat, which deteriorates propulsion performance, but also the anticorrosion electrode plate 2 due to collision with a floating object or the like. Has fallen off and the outer skin 1 has been worn out more than expected without knowing.
Also, especially in front of the propeller where corrosion is likely to occur,
Not only does the anticorrosion electrode plate 2 simply become a running resistance, but it also causes many disturbances in the water flow in the process of melting.

[0003]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and reduces the running area resistance by reducing the protruding area of the anticorrosion electrode plate of the marine vehicle from the outer plate. It is an object of the present invention to provide a marine vessel anticorrosion electrode device capable of improving propulsion performance, preventing damage and falling of the anticorrosion electrode plate, and always maintaining an anticorrosion effect.

[0004]

To this end, the present invention is directed to a storage box which is embedded in an outer plate of a marine vessel and is open to the outside, and the outer surface of the storage box is the same as that of the outer plate. The anti-corrosion electrode plate is fixed as a surface.

[0005]

In the marine vessel anticorrosion electrode device of the present invention, by adopting the opening storage box embedded inside the outer plate, the anticorrosion electrode plate is incorporated inside the outer plate to thereby improve the running resistance of the marine vehicle. Can be suppressed and the propulsion performance can be improved. Furthermore, if a fixed grid that is attached to the surface of the anticorrosion electrode plate and a spring that presses from the inside are used to fix the anticorrosion electrode plate, the outer surface of the anticorrosion electrode plate can be held flush with the outer plate, and the anticorrosion electrode plate will melt. The surface area can be kept constant. Furthermore, if the storage box is streamlined and a groove is provided on the outer surface of the anticorrosion electrode plate, the propulsion performance can be improved by always providing a rectifying effect even in the process of melting the anticorrosion electrode plate, and The surface area and anticorrosion effect can be adjusted.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of an anti-corrosion electrode system for a marine vessel of the present invention will be described. FIG. 1 shows a first embodiment, FIG. 1 (A) is a front view, and FIG. 1 (B) is a longitudinal sectional view. 2 shows a second embodiment, FIG. 2 (A) is a front view, FIG. 2 (B) is a vertical sectional view, and FIG.

First, in the first embodiment shown in FIG. 1, a storage box 3 of an anticorrosion electrode plate 2 is embedded inside an outer plate 1 of a marine vessel, the outside of which is opened, and the bottom of the storage box 3 is extruded. Place the spring 4 and place the installation sheet 5 on it,
Zn, Al on the installation sheet 5 through the insulating sheet 6
And the like, and an insulating sheet 6 is interposed between the outer periphery of the anticorrosion electrode plate 2 and the outer plate 1, and the outer surface of the anticorrosion electrode plate 2 is flush with the outer plate 1. An insulating sheet 6 is placed on the outer surface of the fixed grid 7. The cross-sectional shape of the fixed grid 7 is triangular or angled so that the anticorrosive electrode plate 2 can be easily pressed, and the longitudinal direction is along the water flow to provide a rectifying effect and an external collision preventing effect. . In such a device, by adopting the storage box 3 and incorporating the anticorrosion electrode plate 2 inside the outer plate 1, the traveling resistance can be suppressed and the propulsion performance can be improved. Further, the fixed grid 7 protects the anticorrosion electrode plate 2 from external force and maintains the same surface as the outer plate 1, and even if the anticorrosion electrode plate 2 is melted, the surface area can be kept constant by the pushing force of the spring 4. By removing the fixed grid 7, it is easy to replace the anticorrosion electrode plate 2 from the outside.

Next, in the second embodiment of FIG. 2, a streamlined storage box 3'of the anticorrosion electrode plate 2 is embedded inside the outer plate 1 along the water flow to open the outside thereof, and the storage box 3 is formed. An installation sheet 5 of the same shape is placed on the bottom of the'to enhance the adhesion between the storage box 3'and the anticorrosion electrode plate 2, and the anticorrosion electrode plate 2 having one or a plurality of grooves 8 along the water flow is insulated on the installation sheet 5 The sheet 6 is placed through the sheet 6, and the outer surface of the anticorrosion electrode plate 2 is flush with the outer plate 1 and the edge portion thereof is fixed by a fixture 9. In such a device, as in the first embodiment, by adopting the storage box 3 ', the anticorrosion electrode plate 2 is incorporated inside the outer plate 1 to suppress the traveling resistance and improve the propulsion performance. it can. Further, by combining the streamlined storage box 3'and the groove 8 and arranging them in a direction along the water flow, a rectifying effect is always provided even in the process of melting the anticorrosion electrode plate 2 to improve propulsion performance. Can be achieved. Furthermore, the groove 8 becomes deeper and deeper during use, so that the surface area becomes larger and a larger amount of corrosion protection current naturally flows, and it is possible to respond to adjustment of the corrosion protection effect due to coating deterioration of the outer plate 1. . In addition, as shown in FIG. 3, when this device is arranged around the stern of the hull of the propeller 11 in a direction along the water flow 12 for the purpose of anti-corrosion and rectification effect, the anti-corrosion electrode plate 2 is sufficiently dissolved. Can be obtained.

Thus, according to the apparatus of the first and second embodiments, by using the storage boxes 3 and 3'in which the anticorrosion electrode plate 2 can be housed inside the outer plate 1, the outer plate 1 can be obtained. It is possible to reduce the protruding area of the anticorrosion electrode plate 2 from above, which can reduce the traveling resistance and improve the propulsion performance, and at the same time, prevent the damage and the dropout of the anticorrosion electrode plate 2 to always provide the anticorrosion effect. Can hold Further, according to the device of the first embodiment, the spring 4 and the fixed grid 7 maintain a constant surface area even during the process of melting the anticorrosion electrode plate 2, and thus the running resistance due to the depression of the anticorrosion electrode plate 2 is reduced. It is possible to prevent the increase and the decrease of the anticorrosion effect, reduce the running resistance and maintain the anticorrosion effect constant. Furthermore, according to the apparatus of the second embodiment, the streamlined storage box 3'and the groove 8 facilitate the adjustment of the rectification effect, the surface area, and the anticorrosion effect.

[0010]

In summary, according to the present invention, a storage box which is embedded in an outer plate of a marine vessel and is opened to the outside, and the outer surface of which is fixed in the storage box so that the outer surface is flush with the outer plate. It is possible to reduce the running resistance and improve the propulsion performance by reducing the protruding area of the anti-corrosion electrode plate of the ocean navigation vehicle from the outer plate by using the anti-corrosion electrode plate. INDUSTRIAL APPLICABILITY The present invention is extremely useful in industry because it provides a marine vessel anticorrosion electrode device that can prevent damage and dropout and always maintain the anticorrosion effect.

[Brief description of drawings]

FIG. 1 shows a first embodiment of an anti-corrosion electrode device for a marine vessel of the present invention. FIG. 1 (A) is a front view and FIG. 1 (B) is a longitudinal sectional view.

FIG. 2 shows a second embodiment, (A) of which is a front view and (B) of which is a vertical sectional view.

FIG. 3 is an explanatory diagram of an arrangement state of the same apparatus.

FIG. 4 shows a conventional device, in which FIG. 4A is a front view and FIG. 4B is a vertical sectional view.

[Explanation of symbols]

 1 Outer Plate 2 Anticorrosion Electrode Plate 3, 3'Storage Box 4 Spring 5 Installation Sheet 6 Insulation Sheet 7 Fixed Grid 8 Groove 9 Fixture

Claims (3)

[Claims] 1. A storage box which is embedded in an outer plate of a marine vehicle and is open to the outside, and an anticorrosion electrode plate fixed in the storage box with its outer surface flush with the outer plate. An anti-corrosion electrode system for marine navigation vehicles. 2. The anticorrosion electrode plate is fixed in the storage box by an inner spring and an outer fixed grid that follows the water flow.
Corrosion Protection Electrode Device for Marine Vehicles. 3. The marine vessel anticorrosion electrode device according to claim 1, wherein the containment box has a streamline shape that follows the water flow, and a groove that follows the water flow is provided on the surface of the anticorrosion electrode plate having the same shape as the containment box.