KR100260639B1 - Form fence suitable to places with wide tidal-level variation - Google Patents

Abstract

PURPOSE: A foam fence is provided to prevent spreading of foam discharged from a power plant to neighboring sea areas by installing a foam fence at a place of large difference between the rise and fall of the tide. CONSTITUTION: A foam fence is formed by layering air floats(10) and water bags(11). At full tide, foam(20) onto the surface of sea water is blocked up by the height of the air float while foam below the surface of sea water is isolated by the depth of the water bag. The air float is prepared by coating rubber or polyurethane on airtight and watertight fabric, forming a membrane structure of a bag shape and injecting air via an air valve(12). A reinforcement belt(14) is formed at the connecting part of the air float and the water bag whereto a local excessive force is applied to strengthen stiffness of the fabric. With the foam fence restrains discharge of the foam at upper and lower parts of sea water.

Description

Antifoam film suitable for sea areas with large tides

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a foam fence installed so that bubbles discharged from a power plant do not diffuse into nearby waters. In particular, the present invention relates to an antifoam film suitable for a sea area with a large difference between tides.

As is well known, the causes of the foam discharged from the outlet of the power plant can be summarized into two main categories.

First, since the seawater discharged from the outlet is used as cooling water, the discharged water can be attributed to the foaming caused by the temperature difference that is relatively higher than the surrounding seawater, and the vertical height of the outlet (fall) from the sea level.

In particular, the vertical height is greatly changed according to the water level and the vertical height is the highest at the time of low tide.

The discharged stream with elevated temperature is mixed with the seawater by the high drop, causing turbulent flow, and air is introduced into the seawater to generate bubbles.

Bubbles change into a stable foam over time, and the bubbles generated disappear over time, but due to the mixing of bituminous coal, a power generation fuel, in the air around the coal-fired power plant, the dust is different from the foam surface. To weaken the surface tension of the foam.

For this reason, the foam floats in seawater for a long time to block sunlight, and the black dust that clings to the surface of the foam causes visual pollution, making it a target for fishing workers in the nearby sea.

Three methods can be suggested to remove the bubbles.

The first method is to install drainage channels so that air does not flow into the seawater from the outlets and direct the discharges below the surface. However, it is difficult to adopt this method in tidal waters such as the west coast.

The second method is to install a sloped structure in front of the outlet so that the flow of water from the outlet is slow so that no vortex occurs. Both of these methods have a costly disadvantage because they involve large civil works.

Third, there is a method to prevent the diffusion of bubbles by installing a foam barrier around the outlet and to extinguish the bubbles accumulated in front of the foam by spraying a strong jet of water.

This method is passive compared to the electric method, but has the advantage of low cost.

The existing anti-foaming film is manufactured and installed on the basis of the oil boom (Oil Boom) type to prevent the spread of oil spilled during a sea accident.

In other words, although the physical properties of oil and foam are different, they are all pollutants and are similar in that they float on the surface of the water because they are lighter than water. For this reason, the basic components of the antifoam are very similar to the oil boom.

As shown in FIG. 1, the styrofoam portion 1 which prevents bubbles from passing through the top of the anti-foaming film and imparts the desired buoyancy to the anti-foaming film, and prevents the bubbles from escaping under the styrofoam body 1 The foam trapping skirt (2), the tension support (3) to support the tension applied to the antifoam film by the ocean load (wind, tidal current, flow, waves), improve the performance of the antifoam film, and the skirt is in a vertical posture in the flow It is comprised by the chain 4 provided in the lower end of a skirt to hold | maintain.

This type of anti-foaming film has the effect of preventing the diffusion of bubbles in the sea area where a certain depth is maintained. However, if the difference between tidal waters is installed in the sea area, there is no big problem at high tide. Loss of the anti-foaming film form has a disadvantage in that the foam diffusion prevention effect is greatly reduced.

The present invention relates to a new type of anti-foaming film that effectively prevents bubble diffusion by installing in a sea of high tidal waters, and provides a buoyancy by filling air in an air bag, and a water bag filled with seawater filled in the bottom of the water. During the low tide, it floated on the surface to prevent the spread of bubbles, and at low tide, the water bag adhered to the bottom of the sea floor to maintain a stable shape and to prevent the spread of the bubbles.

In this configuration, the antifoam film has a relatively low center of gravity compared to the conventional antifoam film, so that it is possible to maintain a stable posture during the flow, and does not insert foreign materials such as styrofoam and chains between the fabrics, thereby extending the life of the fabric. Also have together.

1 is a perspective view showing a conventional anti-fogging film.

2 is a cross-sectional view showing the state of high tide as a state diagram of use of the present invention.

3 is a cross-sectional view showing a low tide as a state diagram of use of the present invention.

4 is a perspective view showing the state of high tide as a state diagram of use of the present invention.

Figure 5 is a perspective view showing the water at the time of use as a state diagram of the present invention.

* Explanation of symbols for main parts of the drawings

10: air float 11: water bag

12 air valve 13 bubble blocking membrane

14: reinforcement belt 15: water valve

16: Shackle 17: steel wire

18: lower foam barrier 19: reinforcing cloth

20: bubble

The present invention is an invention introducing a new concept that effectively blocks the diffusion of bubbles even in the sea area with a significant difference between tides by improving and supplementing the shortcomings of the conventional anti-fog film.

This will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view showing the high tide city as a state diagram of the use of the present invention, Figure 3 is a cross-sectional view showing a low tide city as a state diagram of use, Figure 4 is a perspective view showing a high tide city, Figure 5 is a perspective view showing a low tide city It is shown.

As shown in the figure, the air is filled with air 10 and the sea water filled with the water bag 11 is configured to be stacked up and down, the air float 10 in the air valve 12 and both sides of the foam blocking film (13) is configured to be connected to the water bag (11) and the reinforcing belt (14), and the water bag (11) is a steel wire (17) fixed to the water valve (15) and the shackle (16) on both sides Along with the construction, the lower foam blocking film 18 and the reinforcing cloth 19 are formed at the bottom, and reference numeral 20 denotes bubbles.

Embodiments of the effects of the present invention configured as described above will be described in detail.

2 is a cross-sectional view showing a high tide time as a use state diagram of the present invention, Figure 3 is a cross-sectional view showing a low tide time as a use state diagram. FIG. 4 is a perspective view showing the water at high tide, FIG. 5 is a perspective view showing the water at low tide, as shown in the drawing, an air float 10 filled with air, and a seawater filled water bag 11 Are stacked on the surface of the sea as shown in FIGS. 2 to 4.

Therefore, as shown in FIG. 2 showing the high tide, the discharge bubble 20 from which the foam discharged from the outlet of the power plant escapes from the sea surface is discharged to the outside by being limited to the vertical height of the air floating body 10 formed above the sea surface. It is to prevent and also to escape from the lower part of the sea surface is to limit the discharge of the bubble 20 to the water bag 11 is blocked by the locked depth to prevent the release of the bubble 20 above and below the sea level.

The air body 10 of the present invention is manufactured using a hermetic, water-tight fabric that is coated with rubber or polyurethane on a nylon or polyester cloth, and makes a membrane structure of such a bag shape with such a cloth, and an air valve 12 It is configured to have buoyancy by injecting air into the inside through).

The membrane is made of a rubber coated cloth and a polyurethane cloth in the same manner as described above and fills the seawater with water through the water valve 15 to form a water bag 11, and is configured to be adhesively connected to the bottom of the air floater 10.

Since a local excessive force is applied to the connection portion of the air part 10 and the water bag 11, a reinforcing belt 14 is formed at the connection part to increase the strength of the cloth.

If the amount of foam 20 is large, the foam 20 is pushed by the flow, and the foam 20 may flow out through the upper and lower anti-foam layers. Thus, the foam 20 is foamed on both sides of the air floating body 10 and the water bag 11 to prevent it. The blocking films 13 and 18 are constituted to suppress the movement of the bubbles 20.

In the present invention, as shown in FIG. 3 and FIG. 5, when the water is low at the time of low water, the bottom of the water bag 11 reaches the bottom of the shallow bottom.

At this time, the anti-foaming film is forced by the flow of the flow or algae, and the frictional force is generated between the sea bottom and the bottom of the water bag 11 while being pushed by this force.

At this time, there is a possibility that the bottom fabric of the water bag 11 may be damaged together with abrasion, and a reinforcing cloth 19 resistant to wear is formed at the bottom of the water bag 11 to compensate for this.

Antifoam membranes are forced by the flow of waves, algae and discharges.

Due to this load, the antifoam film is subjected to a constant tension along the longitudinal direction, and a part of the tension is supported by the cloth of the antifoam film, but if the load is excessively applied, the transition of the antifoam film is shortened and the life of the antifoam film is shortened.

Therefore, the shackle 16 is fixed to both sides of the water bag 11 and the steel wire 17 is inserted into the shackle 16 to support most of the tension applied to the antifoam film.

The present invention is an improved anti-foaming film to prevent the diffusion of bubbles discharged from the power plant located on the coast can be used even in a region where the difference between the tidal tide is severe, simple cost by combining the air bag and water bag with low cost It is easy to manufacture, it is easy to transport and store in the state of excluding water and air and also has the features of easy installation.

In particular, it is a useful invention that can be greatly contributed to the marine environment to have the advantage that the seawater-filled bag is firmly adhered to the bottom of the sea at the time of low tide, which can effectively control the diffusion of foam.

Claims (4)

The air bag filled with air and the water bag filled with sea water are combined up and down so that when the water depth is deeper than the depth of the anti-foaming film, it floats on the surface to prevent the diffusion of bubbles. Anti-foam film suitable for sea areas with large tidal difference, characterized in that it is seated in a stable posture close to the bottom of the sea floor to block the diffusion of bubbles. According to claim 1, the air bag and the water bag to remove the air and water to reduce the volume, the installation of the membrane body in the sea area at the time of installation, the difference between the tide only to maintain the shape of the anti-foam film by injecting water and air Antifoam film suitable for large sea areas. According to claim 1, wherein the upper portion of the air bag and the lower portion of the water bag so that the center of gravity is located at the bottom of the anti-fogging film to maintain a stable posture, and insert foreign matters such as a STROLL FOAM or a chain into the pocket cloth Anti-foaming film suitable for sea areas with large tidal difference, characterized in that to prevent damage to the pocket cloth. The wear protection caused by friction between the water bag and the bottom of the seabed at the time of low tide, while the bubble blocking cloth is configured on both sides of the air bag and the water bag so that the foam is not pushed out by the flow and out of the water bag and under the water bag. The anti-foaming film is suitable for the sea area where the difference between the tide is made by constructing a reinforcing cloth at the bottom of the water bag to prevent the water.