JPH07286929A - Method for detecting liquid leak - Google Patents

Abstract

PURPOSE:To enable a slight liquid leak to be detected easily by sprinkling a coupler, which is colored when mixed with a leaked liquid, over the floor face around a tank. CONSTITUTION:A liquid 7 to be detected which is leaked from a tank 1 flows down onto the floor face 2 around the tank 1 and mixes with a sprinkled coupler 3, which is then colored. The floor face 2 is photographed by a monitoring camera 4 either constantly or intermittently, and photographic data are processed by an image processing means 5, and when the means 5 detects coloring on the floor face 2, an alarm is emitted from an alarm means 6. Therefore, the leak of the liquid 7 from the tank 1 can easily be detected and quick measures can be taken.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid leak detecting method for detecting a leak of liquid such as water or oil from a tank in a drainage pump station.

[0002]

2. Description of the Related Art A drainage pump station is provided for an emergency such as a flood, and facilities such as a tank in the drainage pump station must be maintained so that it can be operated immediately. However, in recent years, daily management is often insufficient due to lack of human resources, etc., and in the future, there is a tendency toward unmanned operation, so it is expected that an abnormality in equipment will be noticed only after operation. In order to avoid such a situation, the conventional technique attempts to detect an abnormality with a sensor such as a pressure switch or a temperature switch.

[0003]

In reality, some kind of symptom often appears before equipment failure, and liquid leakage is usually seen in the tank. However, in the conventional method described above, There is a problem that it is difficult to detect a slight liquid leak.

The present invention has been made to solve the above problems, and an object thereof is to make it possible to easily detect even a slight liquid leak that cannot be detected by the conventional method.

[0005]

In order to solve the above problems, the liquid leakage detection method of the present invention is a liquid leakage detection method for detecting leakage of liquid from a tank, and It is characterized in that a color-developing agent that develops a color by mixing with a leaked liquid is scattered and the color development is detected.

Further, the liquid leakage detection method of the present invention is a liquid leakage detection method for detecting the leakage of liquid from a tank, in which the floor around the tank is covered with the leaked liquid and the light reflectance is increased. Is applied to detect a decrease in the light reflectance.

[0007]

With the above structure, when the liquid in the tank leaks out, the liquid flows down to the floor surface around the tank and is contact-mixed with the coloring agent scattered on the floor surface, and as a result, the coloring agent develops color. . Therefore, by detecting this color development, the leakage of the liquid from the tank can be easily detected.

Alternatively, if the liquid in the tank leaks and covers the highly reflective paint applied to the floor surface around the tank,
Since the light reflectance of the highly light-reflecting coating material is lowered, the leakage of the liquid from the tank can be easily detected by detecting the decrease in the light reflectance.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a tank for storing liquid such as water and oil, and 2 is a floor surface around the tank 1. On the floor surface 2, a powdery color developing agent 3 that develops color when the liquid in the tank 1 is mixed is sprinkled. Tank 1
A surveillance camera 4 for taking an image of the tank 1 and the floor 2 is installed above the, and an image processing means 5 and an alarm means 6 are connected to the surveillance camera 4.

The operation of the above structure will be described below.
When the liquid in the tank 1 leaks, the leaked liquid 7 to be detected flows down to the floor surface 2 around the tank 1 and is mixed with the spread color former 3. As a result, the color former 3 develops color.
At this time, the floor surface 2 is constantly or intermittently photographed by the surveillance camera 4, and the photographed data is image-processed by the image processing means 5. When the image processing means 5 detects color development on the floor surface, An alarm is issued by the alarm means 6. In this way, the leakage of the liquid from the tank 1 can be easily detected, so that prompt measures can be taken.

In addition to the above-described structure, when a powder or other color-developing agent 3 which has been sprayed on the floor surface 2 is covered with a highly permeable material such as cloth, the leaked liquid 7 permeates the cloth or the like. Since the liquid 7 is diffused, the area of the liquid 7 is increased, and the color is developed in the large area. Therefore, the leakage of the liquid from the tank 1 can be detected more easily.

Instead of the above-mentioned construction, the floor surface 2 around the tank 1 is coated with the leaked liquid 7 to reduce the light reflectance, and thus the high reflectance paint, for example, a high white paint used for road white lines. A paint containing reflective beads may be applied. As a result, the decrease in light reflectance due to the leaked liquid 7 can be detected by the monitoring camera 4 and the image processing means 5 as a color change, and the alarm means 6 can issue an alarm.

[0013]

As described above, according to the present invention, the leakage of the liquid from the tank is detected by the color formation of the color-developing agent scattered on the floor surface around the tank. Such leaks can be easily detected without requiring human intervention, and by taking immediate action, the tank facility in the drainage pump station can be maintained in a state in which it can be operated immediately.

Further, even if the liquid leakage from the tank is detected by the decrease in the light reflectance of the highly reflective paint applied to the floor surface around the tank, a slight liquid leakage can be easily detected. Yes, you can deal with it immediately.

[Brief description of drawings]

FIG. 1 is a schematic diagram illustrating a liquid leak detection method of the present invention.

[Explanation of symbols] 1 Tank 2 Floor surface 3 Coloring agent 7 Leaked liquid

Claims (2)

[Claims] 1. A liquid leakage detection method for detecting leakage of a liquid from a tank, wherein a color-developing agent that develops color by mixing with the leaked liquid is sprayed on the floor surface around the tank, and the color is detected. A liquid leak detection method characterized in that 2. A liquid leakage detection method for detecting leakage of a liquid from a tank, wherein a floor having a high light reflection property is used on the floor surface around the tank, the light reflectance of which is lowered by being covered with the leaked liquid. A liquid leak detection method characterized by applying and detecting a decrease in the light reflectance thereof.