JPS5855837B2 - Watermelonfish - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applied to accidents such as grounding or collision of oil tankers, or damage to onshore oil storage tanks.

This invention relates to a device that prevents the spread of floating oil and promptly recovers it when a large amount of oil spills on the surface of water, and the invention relates to an invention that allows a part of the device proposed by the applicant company to be changed.

The above-mentioned prior invention provides an oil-water inflow path leading from an oil-water inlet to a water surface on which oil is floating to a dam for blocking floating oil, which is disposed with an appropriate head above the oil surface of an oil collection tank. The point that a seawater outlet is provided at the bottom of the inlet channel in front of the oil tank is the same as in the present application, but in the prior invention, the oil collector spans the entire width of the inlet channel and only the lower part is immersed in water. This is a device in which a plate is moved in parallel from the inlet toward the oil collection tank to collect floating oil toward the dam. It is difficult to avoid the disadvantage that the oil collection efficiency fluctuates significantly and becomes unstable.

The present invention overcomes and eliminates all the drawbacks of the device of the prior invention and other previously known devices, and can stably collect oil without being affected by waves, oil viscosity, ship speed, etc., and is easy to maintain. The purpose is to provide an easy floating oil recovery device.

FIGS. 1 to 7 show examples in which the device of the present invention is applied to a ship body.

In Figure 1, 1 is a part of the hull in the bow direction, 2 is oil 1
1 is an inlet for floating oil water, 8 is an oil collection tank installed at the bottom of the ship that extends an appropriate distance inward from the bow, and 7 is a floating oil installed above the oil surface of the oil collection tank 8 with an appropriate head. An oil/water inflow path of an appropriate length is constructed inside the ship from the intake port 2 to the oil collection tank 8 and the floating dam 7 above it.

3 is an outlet for the seawater 12 at the bottom of the inflow channel, which is provided on the bottom of the ship in front of the oil collection tank 80 at the back of the oil water inflow channel, and 5 is an outlet for discharging the seawater 12 above the oil surface of the inflow channel in the direction of the dam 7. A fluid injection nozzle device in which the injection ports are inclined and arranged in one or more rows at right angles to the inflow path, 19 is a supply pipe for the injection flow, 13 is an example of the streamline of the injection fluid, 4 is an inflow port A bubble generator installed in one or more rows on the bottom of the ship and at right angles to the inlet passage, blows air bubbles 15 upwards and forms a bubble film to attenuate the waves of oil water flowing into the ship from the intake port 2. It shall be established.

9 is an oil recovery pump, 10 is an oil separation tank, and 14 is a drain valve.

When the ship moves forward at an appropriate speed on the sea surface with oil floating on it, the oil floating on the water surface flows into the intake port 2 along with the seawater.
The jet stream 13 that enters the ship and is injected from the fluid injection nozzle 5 at the top of the inlet passage causes the floating oil dam 7 at the actual location of the inlet passage to be damaged.
It is blown towards.

At this time, the fluctuation of the oil surface due to waves outside the vessel is blocked and attenuated by the bubble film blown up from the bottom of the inflow channel, and by the time it reaches the dam 7, there is almost no fluctuation, as shown in Figure 6. Only the highly concentrated oil that has climbed over the top of the dam is collected by the oil collection tank 8.

Most of the seawater that has flowed into the inlet channel together with the oil on the upper surface is discharged from the outlet 3 in front of the dam 7.

In addition, the highly concentrated oil that overflows into the oil collection tank 8 from the dam 7 is further transferred to the upper part of the oil-water separation tank 10 by the oil collection pump 9, and in the separation tank, only the seawater that has accumulated at the bottom of the tank due to the difference in specific gravity is removed. The water is discharged from the tank through the drain valve 14.

FIG. 2 shows the injection nozzle 5, the injection flow 13, the supply pipe 19, and the fluid pump device 20 installed in the ship in the fluid injection device.
The patterns of the bubble generator 4, the bubble membrane 15, the air compressor 18, etc. are schematically shown, and FIG. In FIG. 4, the fluid injection nozzle 5 is replaced with a seawater injection nozzle 5a, which is attached to the seawater supply pipe 19 through the flexible tube 21, and is oscillated about the rotating shaft 22 while emitting seawater to spray the water on the sea surface. This is an example of an embodiment in which oil is blown toward an oil collecting section.

For example, the swinging mechanism drives the water turbine 24 by a jet stream emitted from a nozzle 23 of a small diameter pipe branched from the seawater supply pipe 19, and swings the nozzle 5a using a worm 25, a worm gear 26, and a connecting rod 27. This is what I did.

FIG. 5 shows the blower 28, air duct 29, and air injection slit 3 when air is used as the fluid in the fluid injection device.
FIG. 6 and FIG. 7 are explanatory diagrams of the arrangement of parts of the device of the present invention when the entire floating oil recovery vessel is viewed from the side and from above.

Among the numerical symbols, the same members as in FIG. 1 are indicated by the same numerical symbols,
The explanation will be omitted.

33 is a guide plate attached to the bow of the ship so as to extend forward from both sides of the intake port; 31 is an oil storage tank in which oil separated in the oil-water separation tank 10 is transferred and stored by a transfer pump 32; Transfer to a tank ship, etc.

Although the embodiment of the present invention has been illustrated only when it is installed on a ship, it is of course possible to implement it as a pumpoon-type flotation device or land-based equipment as well.

According to the above-mentioned device of the present invention, the following effects can be obtained.

1. Does not use easily expendable materials such as oil-absorbing sponges,
It is also highly economical because there are few mechanical parts.

2. Oil recovery ability is not significantly affected even in waves.

3. Since there are no mechanical parts that are constantly moving in the oil collecting section, there is no risk of fire due to frictional heat, etc., and maintenance is easy.

4. In the present invention, the height of the dam is set higher than the predicted water level of the oil-water inflow path in the vicinity, so the oil is collected there by riding on the airflow of the fluid injection device and being pushed. Since the oil layer only flows into the tank when it crosses the dam, only the oil layer can be collected in the tank, resulting in a high yield.

Due to the presence of waves, the predicted height of the water surface varies, but by providing a bubble generator, a wave-dissipating effect can be obtained, so the characteristics of the dam system can be well expressed.

In addition, this bubble generator not only has a wave-dissipating effect, but also has the effect of making it easier to form an oil layer, and since the airflow that is injected from the fluid injection device is applied to the foamed oil layer, the oil-water side slip separation effect is improved. This has the effect of killing two birds with one stone by encouraging the swelling and growth of the oil layer in front of the dam.

This effect is not affected by the speed of the recovery ship.

When the recovery ship is fast, a large amount of oil gathers in the vicinity of the dam per unit time, but since the height of the dam is set, that much oil is collected in the tank, and when the recovery ship is slow, a small amount of oil gathers in the vicinity of the dam per unit time. However, the amount of oil collected in the tank per unit time is only that small, and the effect of the present invention is that the advantages of the dam system are better exhibited through the effects of wave dissipation and windsocks, which have no effect on the ship's speed. I don't receive it.

Furthermore, by oscillating the fluid injection device, only the oil can be quickly collected near the weir of the dam, so even when the recovery boat is fast, there is no problem in recovering the oil.

5. Recovery ability is not affected by oil viscosity.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the main parts of the present invention for an oil recovery vessel. Fig. 2 is a perspective view of the first part of the device shown in Fig. 1, Figs. 3, 4, and 5 are explanatory views of the special structure of one member in the device shown in Fig. 1, respectively, and Figs. 6 and 7 are FIG. 1 is a side view and a plan view showing an example of the arrangement of various parts of the apparatus of the present invention in the entire recovery ship. 1...hull, 2...intake port, 3...
...Seawater outlet 4...Bubble generator, 5...
...Fluid injection nozzle, 6...Floating oil pool,
7...Floating oil dam, 8...Oil collection tank, 9...Oil recovery pump, 10...
・Oil/water separation tank, 11...Floating oil layer, 12.
... Seawater 13 ... Fluid jet line, 14 ...
...Drain valve, 15...Bubble membrane flow, 17...
... Sintered metal bubble generating tube, 18 ... Blower, air compressor, 19 ... Fluid supply pipe, 20.
...Fluid feed pump, 21...Flexible tube,
22...Rotating shaft, 23...Branch pipe, 2
4...Water turbine, 25...Worm, 26...Worm gear, 27...Connection rod, 28...Blower, 29. ... Air supply pipe, 30 ... Fumarole slit, 31 ...
・Oil storage tank, 32...Transfer pump, 33...
····Guide plate.

Claims (1)

[Claims] 1. An oil and water inflow path leading from the oil and water intake where oil is suspended to a floating oil dam with an appropriate height above the oil surface of the oil collection tank, and a seawater drain at the bottom of the inflow path in front of the oil collection tank. In the apparatus, a swingable fluid injection device for spraying the oil level toward one or more rows of dams above the inflow channel, and a bubble generating device directed upward at the bottom of the inflow channel are provided. A recovery device for oil floating on the water surface using a fluid injection device and a bubble generator, characterized by: