JPS5938153B2 - Sloshing attenuation method in oil storage tanks - Google Patents

Description

[Detailed Description of the Invention] When sloshing occurs in the oil stored inside a fixed roof type oil storage tank, waves as high as 8 meters are generated, and there is a danger that various types of permanent damage may occur due to these waves. It has some drawbacks.

In view of the above, this application places a float containing a certain amount of fluid inside the liquid surface soil inside a tank with a free liquid level, and when sloshing occurs, the float stands up and creates waves of sloshing. This invention relates to a method for attenuating sloshing in an oil storage tank, which is characterized in that waves are rapidly attenuated by breaking the wave.

To describe one embodiment, floats 4 supported by a float support ring 2 and a center pontoon 3 are arranged radially above the storage oil level of a fixed roof type storage tank 1 with a free liquid level, and A certain amount of fluid T is kept inside the float 4.

The support ring 2, center pontoon 3, and float 4 are supported by support rods 5 so that the float 4 can rotate freely, and the float 4 stands up using the support point supported by the support rods 5 as a fulcrum 6. This is how it was done.

The present invention may also be applied by disposing an appropriate number of floats 4 on the soil at the liquid level, and connecting each fulcrum 6 of each float 4 with a continuous support rod 8 or the like so that the floats 4 can rotate freely. It is possible to achieve the objectives of

According to the above-mentioned structure, when the oil 9 in the storage tank generates waves on the liquid surface of the oil when sloshing occurs, the float 4 is raised by the waves with the fluid 7 side facing down around the fulcrum 6 (
It is possible to break the sloshing waves (as shown by the imaginary line shown in FIG. 4), rapidly attenuate the waves, and prevent various permanent effects caused by the sloshing waves that occur when sloshing occurs.

In this application, a float is placed above the liquid level inside a tank with a free liquid level, and when sloshing occurs, the float containing a certain amount of fluid rises up, breaking the waves of sloshing, and causing sudden sloshing. Since it is characterized by attenuating waves, when sloshing occurs, the sloshing waves are destroyed, the waves are rapidly attenuated, and various damage caused by waves is eliminated.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a fixed roof oil storage tanker, FIGS. 2 and 3 are plan views of two embodiments provided with a float, and FIG. 4 is a side view of the float.

Claims (1)

[Claims] 1. A float is arranged above the liquid level inside the tank which is at the free liquid level, and when sloshing occurs, the float containing a certain amount of fluid inside rises up, breaking the waves of sloshing and suddenly A sloshing attenuation method in oil storage tanks characterized by attenuating waves. 2. A method for attenuating sloshing in an oil storage tank, characterized in that the sloshing waves are broken and the waves are rapidly attenuated by providing a number of floats as set forth in claim 1 above the liquid surface. 3. An oil storage tank characterized in that the float described in claim 1 is provided with a fulcrum, and the float rises around the fulcrum when sloshing occurs, thereby breaking the waves of sloshing and rapidly attenuating the waves. Sloshing attenuation method. 4. By connecting the fulcrums provided on the float described in claim 1 and floating the float horizontally above the liquid surface, the float stands up when sloshing occurs, thereby breaking the waves of sloshing and causing it to suddenly rise. A sloshing attenuation method in oil storage tanks characterized by attenuating waves.