JPH09125268A - Galvanic corrosion preventive anode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely recognize the consumption loss of the anode by providing an indicator cavity contg. an electric wire provided with an indicator connection. SOLUTION: The entire surface of an indicator rod 4 is insulated 5. The color indicators 6a, 6b and 6c each consisting of plural different color bands are formed in the axial direction. The rod is simultaneously insulated 5 and coated with a clored heat-resistant paint or a colored ceramic to form the color indicators 6a, 6b and 6c. The indicator cavity contg. an electric wire provided with an indicator connection is furnished in a galvanic corrosion preventive anode. The anode 1 is formed with an anode main body 2 and a core 3, and the rod 4 is welded to the core 3. Consequently, a great deal of labor is not needed, and the consumption loss is precisely recognized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathodic protection anode used for cathodic protection of underwater structures such as hulls.

[0002]

2. Description of the Related Art Conventionally, in order to grasp the amount of wear, the cathodic protection anode used for cathodic protection of an underwater structure such as a ship body has its weight measured or its dimension measured. However, it is necessary to remove the cathodic protection anode to measure the weight, and a specialized worker is required to measure the dimensions.Usually, multiple cathodic protection anodes are installed. Requires a lot of work.

[0003]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and it is possible to easily and accurately grasp the amount of wear of the cathodic protection anode without requiring much labor. The purpose is to provide.

[0004]

To this end, the present invention provides an indicator rod having an insulating color indicator formed of a plurality of bands of different colors along an axial surface in an anode body, or an electric wire with an indicator connecting portion. It features a built-in indicator cavity.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the cathodic protection anode of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment, FIG. 1 (A) is a perspective view of the entire anode, and FIG. FIG. 2C shows a second embodiment, FIG. 2A shows a second embodiment, and FIG. 2A shows a longitudinal sectional view of the entire anode. FIG. 3B is an enlarged view of the indicator cavity in the above. First, in FIG. 1 of the first embodiment, the cathodic protection anode 1 is an anode main body 2 mainly containing zinc, aluminum, magnesium, etc., and a bracket for mounting the anode main body 2 on both ends of the anode main body 2 to the hull 14 with both ends. The anode main body 2 is composed of an iron core plate 3
In the inside, a plurality of metal indicator rods 4 oriented in the a direction perpendicular to the surface of the hull 14 or the horizontal b direction are welded to the core plate 3 at appropriate intervals and then cast. There is.

The indicator bar 4 is shown in FIG.
As shown in (B) and (C), the entire surface is subjected to insulation treatment 5, and color indicators 6a, 6b, 6c composed of a plurality of bands of different colors are formed along the axial direction. Insulation treatment 5 and color indicator 6
The formation of a, 6b, 6c is done together by coating with colored heat resistant paint or colored ceramics. In addition, the color indicators 6a, 6b,
The width of the color band 6c is varied in consideration of the consumption time of the anode main body 2, and for example, the width is gradually widened from an early stage where the consumption rate is relatively slow to an early stage, and the color is, for example, 6a white, 6
b is yellow and 6c is red.

In such a cathodic protection anode 1, the amount of wear of the anode body 2 is checked by visually checking the color of the color indicators 6a, 6b, 6c on the exposed portion of the indicator rod 4 as the anode body 2 is worn. It can be grasped in stages. Note that the consumption of the anode body 2 proceeds from the farthest place from the core plate 3, so if the indicator rod 4 is not insulated, the anode body 2 around the indicator rod 4 will remain without being consumed and the indicator Although the bar 4 is not exposed and measurement cannot be performed, the entire surface of the indicator bar 4 is insulated 5
Since the anode main body 2 is also worn around the indicator rod 4 and the indicator rod 4 is surely exposed, the amount of consumption by the color indicators 6a, 6b, 6c is accurately grasped.

Next, referring to FIG. 2 of the second embodiment, an indicator cavity 7 of an appropriate size is provided in the base of an anode body 2 of an electrolytic protection anode 1 similar to that shown in FIG. The electric wire 8 is inserted into the inside of the vessel 7 from the hull 14 side, an indicator connecting portion 9 by lead connection is provided at the tip of the electric wire 8, and the other end of the electric wire 8 is connected to the power source 10. As shown in FIG. 2B, the electric wire 8 has a mounting structure in which the indicator connecting portion 9 easily comes off when melted. In addition, the seal 11 is placed at the passage of the electric wire 8 through the hull 14, and
A miniature light bulb 12 and a switch 13 are arranged at a location inside.

In such an anticorrosion anode 1, when the anode body 2 is consumed and reaches the indicator cavity 7 and the indicator connecting portion 9 provided inside the indicator cavity 7 is immersed in seawater, the lead of the indicator connecting portion 9 is removed. The electric bulb 8 is electrically consumed and the electric wire 8 is cut off, and the miniature bulb 12 disappears, or the miniature bulb 12 is not turned on even when the switch 13 is turned on. Therefore, in this cathodic protection anode 1,
The consumption of the anode body 2 can be detected remotely. If a plurality of electric wires 8 are inserted into the indicator cavity 7 and the positions of the indicator connecting portions 9 are made different in the height direction of the indicator cavity 7, the amount of consumption of the anode body 2 can be grasped in stages. it can.

Thus, in the first embodiment, the insulating color indicators 6a, 6b,
6c is provided with the indicator rod 4, and in the second embodiment, the anode body 2 is provided with the indicator cavity 7 containing the electric wire 8 with the indicator connecting portion 9,
Since each of the cathodic protection anodes 1 has a function of displaying the amount of wear, the amount of wear of the anode body 2 can be easily and accurately performed without requiring a detachment work for weight measurement or a specialized worker for dimension measurement. It can be grasped, and it can be grasped underwater by a diver or by a remotely controlled underwater video camera.

[0011]

In summary, according to the present invention, an indicator rod having an insulating color indicator formed of a plurality of bands of different colors along the axial surface in the anode body, or an indicator having an electric wire with an indicator connecting portion built therein is provided. The present invention is extremely useful industrially, because the provision of the cavity provides the cathodic protection anode whose consumption amount can be easily and accurately grasped without requiring much labor.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the cathodic protection anode of the present invention, FIG. 1 (A) is a perspective view of the entire anode, FIG. 1 (B) is a perspective view of an indicator rod in the same, and FIG. It is a transverse cross-sectional view along CC of B).

2A and 2B show a second embodiment, FIG. 2A is a vertical sectional view of the entire anode, and FIG. 2B is an enlarged view of an indicator cavity in the same.

[Explanation of symbols]

 1 Electrocorrosion Anode 2 Anode Body 3 Core Plate 4 Indicator Rod 5 Insulation 6a, 6b, 6c Color Indicator 7 Indicator Cavity 8 Electric Wire 9 Indicator Connection 10 Power Supply 11 Seal 12 Bean Light Bulb 13 Switch 14 Hull

Claims (1)

[Claims] 1. An indicator rod having an insulating color indicator formed of a plurality of bands of different colors along an axial surface, or an indicator cavity containing an electric wire with an indicator connecting portion is provided in the anode body. And a cathodic protection anode.