JP4143095B2 - Oil spill prevention device - Google Patents

Description

The present invention relates to an apparatus for detecting an oil spill and preventing or preventing the spill.

According to the present invention, when a certain quantity or more of oil such as fuel oil is stored in a home tank or storage tank, these storage tanks must be installed in a cage-shaped oil breakwater having a volume larger than the capacity of the tank. Although the upper part of the oil breakwater is open, if it rains, water will accumulate in the oil breakwater, which may cause damage due to misoperation or corrosion of the faucet in the storage tank. When oil inside the tank flows out, only oil with a light specific gravity may overflow from the breakwater and flow out into the ground or rivers. Therefore, when it rains, the oil breakwater is monitored all the time, and when water is accumulated, the drain valve is opened to drain water, and after draining, the drain valve is closed. The current situation is not fulfilling the function of the oil bank.
When oil overflows, a large amount of money is required for its treatment and recovery, and a device for preventing or preventing the inadvertent spill of oil is desired.

Therefore, the present invention tries to prevent or prevent oil from flowing into a river or the like by turning on the switch by sensing the oil content using the difference between the specific gravity of water and oil and issuing an alarm or operating an electric valve. Is.

In the present invention, a separator is provided at a discharge port at a terminal position of an oil breakwater installed at a work place where oil leaks easily or at an oil spill risk point of an oil home tank, and this separation device is lower than the discharge port of the oil breakwater. A separation tank having a bottom at a position and provided via a normally open first stop valve; a bottom outlet provided at a bottom side of the separation tank via a normally closed second stop valve; and an intermediate The unit has a middle discharge port provided via a normally open water level maintaining electric valve, and a discharge pipe provided with a normally open open port for discharging in the event of abnormally full water. At least a float that floats on the oil component is provided with an adjustment float that floats on the water and sinks against the oil component, and an oil sensor that can operate the switch by the sinking of the adjustment float due to the oil outflow is provided. The switch of the sensing device and the normally closed second strike Pubarubu, electrically connected to the water level maintained motorized valve, is oil outflow prevention device was opened and closed these valves by sensing oil of oil sensing device.

  As an effect of the present invention, the difference between the specific gravity of water and oil is used, oil can be sensed reliably and for a long time, and the switch can be operated by sensing oil, and this switch is turned on / off. Can be communicated to the opening and closing of valves and alarms of alarm devices to prevent or prevent oil spills into rivers. In addition, when it rains, the water flowing out from the oil breakwater etc. is always drained and does not accumulate, which is effective for maintenance of auxiliary facilities such as storage tanks.

  The oil content sensing device 1 in FIG. 1 is provided with an adjustment float 5 that floats on water and sinks to the oil component at least in the float 2 that floats on the oil content. Can be turned on, and an electric device such as an alarm or a motor-operated valve can be operated to detect oil spillage. Specifically, the float 2 has a ring shape, a horseshoe shape, etc. An adjustment float 5 adjusted so as to float on the water by the adjustment weight 4 and sink to the oil component is attached to the space 3 and attached to a lever cage 7 pivotally attached via a shaft 6. A switch 8 is provided on the free end of the switch 8 and is set so that the switch 8 is tilted downward and turned on when the adjusting float 5 sinks against the oil. This makes it possible to detect oil spills, and when the switch 8 is turned on, an electrical device such as an alarm or a valve is activated. That is, when the oil content sensing device 1 is present in the water or air layer, the interval between the switches 8 is set to be off, and when the float 2 and the adjustment float 5 come into contact with the oil content, the float 2 floats and the other adjustment is performed. When the float 5 sinks, the switch 8 tilts and is turned on. As the switch 8, it is preferable to use a switch in which a mercury ball moves when it is tilted to close the contact and turn on (hereinafter referred to as a tilt switch system).

  The shape of the float 2 and the adjustment float 5 is arbitrary, and as shown in FIG. 4, a ring-like float 2 is provided at the lower end of the cylinder 9 so as to float at least in the oil, and the adjustment float 5 penetrates the inside of the cylinder 9. The supporting rod 10 is provided so that it floats in the water and sinks with respect to the oil, and is adjusted by the adjusting weight 4 so as to be movable up and down. The switch 8 is turned on. A cover 11 covers the float 2, the cylinder 9, the support rod 10, the switch 8, and the like (hereinafter described as a press switch system).

  When the tilt switch type oil content sensing device 1 of the above item 0006 is used in an oil content spill prevention device, as shown in FIG. 3, it is installed in a work place where oil is easily leaked, an oil spill risk point of an oil home tank, or the like. A separation device 22 is provided at the discharge port 13 at the end position of the oil breakwater 12 (the shape of the trough shape, funnel shape, etc.). This separation device 22 is provided from the discharge port 13 of the oil breakwater 12. A separation tank 15 having a bottom 14 at a lower position and provided through a normally open first stop valve 16, and provided at a bottom side of the separation tank 15 through a normally closed second stop valve 17. A bottom discharge port 18, an intermediate discharge port 20 provided in the middle through a normally open water level maintaining electric valve 19, and a discharge pipe 22 provided in the upper part with a normally open open port 21 for discharging when the water is abnormally full. The stopper of the separation tank 15 24, the adjusting float 5 of the oil content sensing device 1 is mounted, the switch 8 of the oil content sensing device 1 and the water level maintaining electric valve 19 are electrically connected, and the switch 8 is inclined by the oil content sensing of the oil content sensing device 1 Then, the water level maintaining electric valve 19 can be closed freely. The separation tank 15 is covered with a cover 11. An alarm device (not shown) may be provided to operate simultaneously with the closing operation of the water level maintaining electric valve 19. In the figure, reference numeral 30 denotes a heater which prevents the water in the separation device 22 from freezing.

  When the pressure switch type oil content sensing device 1 of the above-mentioned 0007 is used for an oil content outflow prevention device, as shown in FIG. 4, a separation device 22 is provided at the discharge port 13 at the end position of the oil breakwater 12 as before. The separation device 22 is provided with a separation tank 15 having a bottom 14 at a position lower than the discharge port 13 of the oil barrier 12 and a normally open first stop valve 16, and a bottom of the separation tank 15. A bottom outlet 18 provided through a normally closed second stop valve 17 on the side, an intermediate outlet 20 provided through a normally open water level maintaining electric valve 19 in the middle, and abnormally full water above. A discharge pipe 22 provided with a normally open opening 21 is connected continuously, and the adjustment float 5 of the oil content sensing device 1 of the above-mentioned paragraph 0007 is placed on the stopper base 24 of the separation tank 15, and the oil content sensing device 1. Switch 8 and water level maintaining electric valve 9 is electrically connected, and the water level maintaining electric valve 19 can be closed freely by sensing the oil content of the oil content sensing device 1. However, the cylindrical cover 11 is provided in the separation tank 15, and the cylinder 9 is placed in the cover 11. It is fitted so that it can move up and down. In this case as well, an alarm device (not shown) may be provided to operate simultaneously with the closing operation of the water level maintaining electric valve 19. A heater 30 prevents the water in the separation device 22 from freezing.

The above oil spill prevention device will be described with reference to FIGS. 5 and 6 for the flow of water and oil in the separation tank 15 and the discharge pipe 22.
When there is no water ((a) in FIG. 5), the float 2 and the adjustment float 5 are placed on the stopper base 24. However, when water A such as rainwater enters the oil barrier 12, the water A is As shown in (b), when the water level flows into the discharge port 13 and the separation tank 15 and reaches the level of the intermediate discharge port 20, the water is discharged from the discharge port 20. At this time, the float 2 and the adjustment float 5 float on the water A, and the switch 8 remains off.

  When oil B such as oil flows into the separation tank 15 in which the water is stored, the oil B having a lower specific gravity floats on the water A in a layered manner due to the difference in specific gravity, and the water A becomes the lower layer, and the oil B is further stored. When it comes, water A in the lower layer is discharged from the intermediate outlet 20 (C in FIG. 5). When the layer of a certain amount of oil B becomes thick, the float 2 floats on the oil B as shown in FIG. 6 and the adjustment float 5 sinks. In the tilt switch method, the switch 8 is tilted and turned on. When the switch 10 'is pressed, the switch 8 is turned on, the water level maintaining electric valve 19 is operated, the intermediate discharge port 20 is closed, and the outflow of oil to the outside stops (d in FIG. 5). At this time, it is preferable that the on-operation of the switch 8 can be confirmed by audiovisual in conjunction with an abnormal lamp or alarm (not shown).

Similarly, in FIG. 5, the outflow of oil B continues after closing the intermediate discharge port 20, and when the backflow stops, only the water pushed by the oil in the state where the intermediate discharge port 20 is closed is discharged into the discharge pipe. It rises in the direction of the opening 21 of 22 (e in FIG. 5).
If the oil B stops flowing out and rains when it is in the state of (e), the rainwater A flows under the oil B due to its specific gravity and joins with the water A accumulated from the front to open 21 is discharged (f in FIG. 5).
In order to recover the oil B from the separation tank 15, first, the second stop valve 17 of the bottom outlet 18 is opened to take out the water A accumulated in the separation tank 15, and after the water A is taken out, the second stop valve 17 is opened. The water level maintaining electric valve 19 of the closed intermediate outlet 20 is opened to take out the oil B (H in FIG. 5). The second stop valve 17 may be opened to take out the oil component B.

Cross-sectional explanatory drawing of the oil content detection apparatus which concerns on this invention. A perspective explanatory view of the float. The longitudinal section explanatory drawing of the oil component outflow prevention apparatus which uses an oil component detection apparatus. The longitudinal section explanatory drawing of the oil content outflow prevention apparatus which concerns on the other Example. Explanatory drawing which showed the separation condition of water and oil in a separation apparatus. Explanatory drawing which showed the relationship between the float and the adjustment float.

Explanation of symbols

1: Oil content sensing device 2: Float 3: Space portion 4: Adjustment weight 5: Adjustment float 6: Shaft 7: Insulator rod 8: Switch 9: Tube 10: Support rod 10 ': Actuator 11: Cover 12: Oil barrier 13: Discharge port 14: Bottom 15: Separation tank 16: Stop valve 17: Stop valve 18: Bottom discharge port 19: Water level maintaining electric valve 20: Intermediate discharge port 21: Opening port 22: Separation device 23: Discharge pipe 24: Stopper Table 25: Garbage removal 30: Heater A: Water B: Oil

Claims (1)

A separator is installed at the discharge port at the end of the oil breakwater installed at a place where oil is likely to leak, or at the oil spill risk point of the oil home tank, and this separator has a bottom at a position lower than the discharge port of the oil breakwater. A separation tank provided via a normally open first stop valve, a bottom discharge port provided on the bottom side of the separation tank via a normally closed second stop valve, and an intermediate part at all times. An intermediate discharge port provided via an open water level maintaining electric valve and a discharge pipe with a normally open open port for discharging when the water is abnormally full are connected above, and the separation tank floats at least in oil. The float is provided with an adjustable float that floats on the water and sinks against the oil, and is provided with an oil sensing device that can be operated by the sinking of the adjustable float due to an oil outflow. And normally closed second stop valve Electrically connecting the water level maintaining electric valve, oil outflow prevention device was opened and closed these valves by sensing oil of oil sensing device.