JPS587355B2 - Fuyuyunobunrikaishyuusouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for separating and recovering oil floating on the sea.

Conventional recovery devices of this type include a method that uses a belt conveyor to recover surface oil, and a method that simultaneously sucks oil and seawater and separates and recovers them using an oil-water separator. All of these methods are effective for recovery when the water surface is calm, but in stormy weather, especially when there are high waves, the entire device may tilt or the waves may jump over the device, making it difficult to use. Currently, there are some restrictions.

The present invention solves these problems by a simple method and provides a floating oil recovery device that can be used under any weather conditions.

Examples will be described below based on the drawings.

Two or several fixed floats 2 are fixed to the outer periphery of the tank side wall 11 of the water collection tank 1 at equal intervals.

This fixed float 2 is adjusted in advance so that the water collection tank 1 is always maintained at an appropriate depth below the water surface.

A suction pipe 8 is attached to the center of the tank bottom 12, and the water collection tank 1
The seawater flowing into the tank is discharged out of the tank via a suction pipe 8 and a drain pipe 14 by a seawater pump 15 attached to the fixed float 2.

Further, a valve position adjusting device 3 is attached to the center of the upper support plate 18 of two or more fixed floats 2, that is, at a position concentric with the suction pipe 8 attached to the tank bottom 12.

This device is a device that performs simple gap adjustment between the ball valve 6 and the valve seat 7, so-called adjustment of the sinking speed of the float.

A connecting rod 4 is fixed to the lower end of the vertically movable portion of the valve position adjusting device 3, and a conical valve seat 7 is connected to the extended tip of the connecting rod 4.

The tip of the valve seat 7 is pipe-shaped and inserted into the suction pipe 8 described above.

Therefore, the valve seat 7 is configured to move up and down in conjunction with the operation (automatically or manually) of the valve position adjusting device 3.

Furthermore, a float 5 that floats and sinks using the connecting rod 4 as a guide, that is, a conical float 5 that can float and sink, which is the main feature of this invention, is attached.

This float 5 has several support arms, and has a concentric shape with the float 5 as the center, and has a weir plate 9 and a wave break plate 10.
It supports the tank, isolates it from the water surface outside the tank, and at the same time forms an oil collection reservoir.

In addition, a part of the weir plate 9 is provided with a flexible body over its entire circumference to block the inflow of seawater, etc., and at the same time, to allow the float 5, the weir plate 9, and the wave shield plate 10 to float or oscillate together. 13, it is connected to a part of the water collection tank 1.

This is to prevent waves from flowing in during stormy weather.Furthermore, in the center of the float 5, there is a ball valve 6 that hangs down using a flexible body such as a chain, and has a structure that faces the valve seat 7. It has become.

Also, an oil pump 16 is installed at a position opposite to the seawater pump 15 installed on the fixed float 2 so as to balance it.
The structure is such that the oil collected in the wave shield plate 10 is sent to a recovery tank by a suction pipe 17.

Since the above is an overview of this device, the operation procedure will be explained next.

As explained above, the water collection tank 1 is floating at an appropriate position below the water surface, and the weir plate 9 connected to it is also floating below the water surface depending on the thickness of the oil layer, so it hangs on the surface. The oil crosses this weir plate 9 and flows into the water collection tank 1 along with some seawater.

Here, a method for floating the weir plate 9 to an appropriate position below the water surface will be explained.

If the amount of water sucked and discharged from the drain pipe 14 is greater than the amount of oil water that crosses the weir plate 9 and flows into the water collection tank, the liquid level in the tank will fall, and as a result, the float 5 will settle, and the weir plate 9 will also settle. The amount of inflow water is increased. Conversely, if the amount of inflow is greater than the amount of discharged water, both the float 5 and the weir plate 9 float to reduce the amount of inflow water.

In this way, the flow rates are adjusted so that they are balanced when they match.

This adjustment is determined by the amount of water discharged from the seawater pump 15 to the outside, ie, by adjusting the opening degree of the discharge valve of the pump.

In this way, as seawater is discharged from the bottom of the tank, the weir plate 9
Oil water flows into the tank from the outside beyond this point, but due to its specific gravity, oil accumulates in the upper part of the tank, increasing the thickness of the oil layer, and eventually the liquid level inside the tank can be compared to the external liquid level. Even if they are the same, float 5 begins to settle.

In addition, since the float 5 has a conical shape, as the oil layer stored in the upper part of the tank becomes thicker, the settling speed increases, and the ball valve 6 and valve seat 7 rapidly approach and start squeezing the seawater outlet, so the seawater pump 15 suction pressure drops.

The point in time when this pressure drop drops below a certain value is detected (not shown), and in response to the command, the oil pump 16 is automatically operated for a certain period of time (described later), and the oil is stored in the wave breaking plate 10. The oil is discharged and recovered outside the device through the oil suction pipe 17.

Note that even during this oil draining operation, the seawater pump 15 continues to operate, so oily water continues to flow in from outside the tank, and the oil storage layer becomes thinner.

Therefore, the float 5 rises to the surface, the opening degrees of the ball valve 6 and the valve seat 7 become wider, and as the amount of seawater flowing out from the bottom of the tank increases, the suction pressure of the seawater pump 13 also rises, and the oil pump 16 is detected by the detector.
operation will be stopped.

By repeating the above operations, oil and seawater can be separated and recovered in the same device.

Since this floating device itself is equipped with each pump and a power source (electrical or hydraulic, etc.) for these, it is not only possible to separate and recover the equipment at sea, but also to be able to use it in case of stormy weather because it has a wave shield. This device can also be used in

Furthermore, for example, if it is attached to a catamaran instead of a fixed float, it can travel on the sea under its own power and collect floating oil.

This provides a highly utilized floating oil recovery device.

[Brief explanation of the drawing]

The figure is a sectional view showing an embodiment of the present invention. 1... Water collection tank, 2... Fixed float, 3... Valve level adjustment device, 4... Connection rod, 5... Float, 6... Ball valve,
7... Valve seat, 8... Suction pipe, 9... Weir plate, 10... Wave shield plate, 11... Tank side wall, 12... Tank bottom, 13... Flexible body, 14... Drain pipe , 15... seawater pump, 16... oil pump, 17... oil suction pipe, 18... upper support plate.

Claims (1)

[Claims] 1 Two or several fixed floats 2 are fixed to the outer edge of the water collection tank 1, and a valve position adjustment device 3 and a connecting rod 4 integrally constructed with the valve position adjustment device 3 are installed in the center of the water collection tank 1. A conical float 5 that can rise and fall up and down using the guide is fitted, and this float 5, a weir plate 9 supported concentrically by several supporting arms, and a wave break plate 10 are connected to the water collection tank 1. A part of the float 5 is connected via a flexible body 13, and there is a ball valve 6 hanging down from the center of the float 5 by a flexible body such as a chain, and a valve seat 7 is provided at the lower end of the connecting rod 4. Separation and recovery equipment for floating oil.