JP2725398B2 - Ocean suspended matter elimination device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing marine suspended matter, and more particularly, to a cooling water intake port of a thermal or nuclear power plant or other plant. The present invention relates to a device for removing floating objects floating in the sea, such as jellyfish and garbage, from the intake so as not to enter the intake.

[Conventional technology]

Conventionally, seawater has been used as cooling water when condensing steam for power generation, but sometimes jellyfish abnormally occurs in the seawater, and the jellyfish is sucked together with the seawater from the cooling water intake and filtered. And the amount of cooling water decreases, and the operation of the power plant may become impossible.

To prevent this, for example, as a first means,
Japanese Patent Publication No. 62-6044 and Japanese Patent Application Laid-Open No.
Japanese Patent Application Laid-Open No. 254712 and Japanese Patent Application Laid-Open Publication No. Sho 61-134274 are known as a third means and Japanese Patent Application Laid-Open No. 61-134274 as a fourth means.

[Problems to be solved by the invention]

However, the first method of upper air is to increase the flow rate of hot wastewater, discharge it from a water discharge port below the sea surface, and let cooling water flow at a low flow rate from a lower intake port. If it occurs, it is called a micro-velocity,
It cannot be expected to prevent the jellyfish from being sucked into the intake. In the second means, a jellyfish inflow prevention net is provided around the water intake device. When a large amount of jellyfish occurs, the jellyfish adheres to the net and reduces the amount of water intake. Inevitably, in the third and fourth means, the jellyfish near the water intake is to be collected. Again, it is necessary to prevent a large amount of jellyfish from being sucked into the water intake. There is a problem that it is very difficult.

The present invention is intended to solve such a problem. That is, the present invention, even if jellyfish is generated in large quantities, or even if a large amount of trash is floating in the sea,
It is possible to reduce the running cost by preventing jellyfish and dirt from being sucked into the cooling water intake and preventing the amount of cooling water from decreasing, and by operating the elimination device only when necessary. It is an object of the present invention to provide an apparatus for removing marine suspended matter.

[Means for solving the problem]

In order to achieve the above object, an apparatus for removing marine suspended matter of the present invention is provided on an ocean floor in front of a cooling water intake port to raise suspended matter in the sea, and an ascending flow generator, A sensor provided on the offshore side for detecting suspended matter in the sea, and a control device for inputting a detection signal from the sensor to control the operation of the upflow generator, Consists of an air supply pipe and an air blowing nozzle provided in the air supply pipe, and is provided near the surface of the water, and moves the suspended floating substance in the sea horizontally in a direction opposite to the cooling water intake direction. An apparatus for transporting suspended matter in sea is provided, and the apparatus for transporting suspended matter in water is configured to jet water to jet a mixed fluid of water and air to create a horizontal flow.

[Action]

According to the present invention, an upflow generator is provided on the seabed in front of the cooling water intake, and the upflow generator includes an air supply pipe and an air blowing nozzle provided in the air supply pipe. By operating the upflow generator, an upflow is created, and marine suspended matter such as jellyfish and dust in the sea float up near the water surface. In addition, a marine suspended matter transfer device is provided near the water surface to move suspended suspended matter in the sea horizontally in the direction opposite to the cooling water intake direction. The horizontal stream is created by injecting water, and the suspended matter that has floated can be moved offshore by this horizontal stream. Accordingly, it is possible to prevent the suspended matter from approaching the intake and to remove the suspended matter from the intake. Moreover,
A sensor provided on the offshore side of the updraft generator to detect floating substances in the sea, and a control device that receives a detection signal from the sensor and controls the operation of the updraft generator. Therefore, the sensor detects an ocean floating matter in front of the upward flow generator, and the control device inputs a detection signal from the sensor to start the operation of the upward flow generator. That is, when there is no suspended matter in the ocean, the control device does not receive the detection signal from the sensor,
Control is performed such that the upflow generator is stopped. Therefore, the upflow generating device is automatically operated only when necessary without continuously operating, and the running cost can be reduced.

〔Example〕

1 and 2 show an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a cooling water intake port in a power plant or other plant, 2 denotes a water surface, and 3 denotes a seabed.

 4 is a floating substance in the sea such as jellyfish or garbage.

Reference numeral 5 denotes an air supply pipe of an upflow generator that is provided on the sea floor 3 in front of the cooling water intake port 1 and that raises floating substances 4 in the sea. The air supply pipe 5 has a large number of air blowing nozzles 6 provided upward. doing.

Reference numeral 7 denotes an ultrasonic oscillator of a sensor provided on the offshore side of the air supply pipe 5 of the upward flow generator to detect floating substances 4 in water, and 8 denotes an ultrasonic receiver.

Reference numeral 9 denotes an air compressor for supplying compressed air to the air supply pipe 5 of the upflow generator.

Numeral 10 is a direction opposite to the direction of intake of cooling water (offshore direction).
The water-floating nozzle of the marine suspended matter transfer device that is suspended from the float 11 floating on the water surface 2 and moves up and down along the guide rail 12 following the fluctuation of the water surface 2. Reference numeral 13 denotes a pump which supplies pressurized water to the water injection nozzle 10 via a flexible tube 14.

Reference numeral 15 denotes a control device which controls the operation of the air compressor 9 and the pump 13 by inputting a detection signal from the ultrasonic receiver 8.

Note that the air compressor 9, the pump 13, and the control device 15 are provided on the land side.

In the apparatus for rejecting suspended matter in the ocean configured as shown in FIGS. 1 and 2, if the suspended matter 4 in the sea passes between the ultrasonic oscillator 7 and the ultrasonic receiver 8 of the sensor, the ultrasonic The receiver 8 detects this and sends the detection signal to the control device.
15 is input, and the operation of the air compressor 9 and the pump 13 is started.

Then, air is blown upward from an air blowing nozzle 6 provided in the air supply pipe 5 of the upward flow generating device to generate an upward flow, and the water surface 2 is discharged from a water injection nozzle 10 of the marine suspension transporting device. Water is sprayed toward the offshore near, creating a horizontal flow.

Thereby, the floating substance 4 in the sea floats near the water surface 2 on the upward flow above the air supply pipe 5,
Subsequently, the floating matter 4 which has floated is removed to the offshore side by the horizontal flow by the water jet nozzle 10.

In other words, since the suspended matter 4 in the sea is prevented from approaching the cooling water intake 1 and is removed far from the intake 1,
The floating material 4 can be prevented from entering the water intake 1.

When there is no floating substance 4, the control device 15 does not input a detection signal from the ultrasonic receiver 8 of the sensor.
Control is performed so that the air compressor 9 and the pump 13 are stopped.

That is, the air compressor 9 and the pump 13 are controlled so as to be automatically operated only when necessary without continuously operating, thereby reducing running costs.

Note that the air blowing nozzle 6 may have an ejector function of sucking water and ejecting water with the air.

Further, as a sensor for detecting floating substances 4 in the sea,
As a known fish finder, a reflection type using reflection of ultrasonic waves or a transmission type using transmission of ultrasonic waves may be used.

〔The invention's effect〕

As described above, according to the present invention, the updraft generator is provided on the seabed in front of the cooling water intake, so that the updraft is generated by the updraft to generate jellyfish and garbage in the sea. And the like can be floated near the surface of the water, and can be removed from the intake by preventing the suspended matter from approaching the intake. For this reason, it is possible to prevent the suspended matter from entering the water intake port, and thus, it is possible to prevent the amount of water from being reduced or clogged by the suspended substance entering the water intake port. Moreover,
A sensor provided on the offshore side of the upflow generator to detect floating substances in the sea, and a control device that receives a detection signal from the sensor and controls the operation of the upflow generator. Therefore, the sensor detects an ocean floating matter in front of the upward flow generator, and the control device inputs a detection signal from the sensor to start the operation of the upward flow generator. That is, when there is no marine suspended matter, the control device does not receive the detection signal from the sensor,
Control is performed such that the upflow generator is stopped. Therefore, the upflow generating device is automatically operated only when necessary without continuously operating, and there is an effect that the running cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a plan view of the same. 1 ... cooling water intake 2 ... water surface 3 ... sea surface 4 ...
Underwater suspended matter, 5 ... Air supply pipe of upflow generator, 6
... air blowing nozzle, 7 ... ultrasonic oscillator of sensor,
8 ... Ultrasonic receiver for sensor, 10 ... Water injection nozzle for marine suspended matter transfer device, 15 ... Control device.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Masanori Ogawa 3-1-1-15 Toyosu, Koto-ku, Tokyo Ishikawa Harima Heavy Industries, Ltd. Toyosu General Office (72) Inventor Jin Miyagawa 3-1-1 Toyosu, Koto-ku, Tokyo No. 15 Ishikawa Harima Heavy Industries, Ltd. Toyosu General Office (56) References JP-A-63-277313 (JP, A) JP-A-63-151707 (JP, A) Jikken 54-21388 (JP, Y2)

Claims (6)

(57) [Claims] 1. An ascending flow generator provided on the seabed in front of a cooling water intake for raising floating substances in the sea, and an ascending flow generator provided on an offshore side of the ascending flow generating apparatus to reduce floating substances in the sea. A sensor for detecting, and a control device for inputting a detection signal from the sensor to control the operation of the upflow generator, wherein the upflow generator is provided in the air supply pipe and the air supply pipe. An ocean-floating nozzle, which is provided near the surface of the water, and further moves the suspended floating substance in the sea horizontally in a direction opposite to the cooling water intake direction. An apparatus for removing marine suspended matter, wherein the apparatus injects water and jets a mixed fluid of water and air to create a horizontal flow. 2. The apparatus for removing marine suspended matter according to claim 1, wherein the air blowing nozzle of the upflow generator has an ejector function of sucking water and ejecting water together with the air. 3. The apparatus according to claim 1, wherein the control unit controls the operation of the apparatus for transferring a suspended matter by inputting a detection signal from a sensor. 4. The apparatus according to claim 1, wherein the sensor uses an ultrasonic wave. 5. The apparatus according to claim 4, wherein the sensor is of a reflection type. 6. The apparatus according to claim 4, wherein the sensor is of a transmission type.