JP3129106U - Intake screen adsorption blockage prevention device due to the drifting of giant mariners. - Google Patents

Abstract

PROBLEM TO BE SOLVED: Conventionally, in a place where a large amount of seawater is rapidly taken for cooling such as a nuclear power plant, a rapid seawater flow is generated due to a strong seawater suction water intake, and a giant marinade is sucked into this seawater stream. If it adsorbs to the screen of the water intake and it overlaps in large quantities, the water intake will be in a closed state, and in the worst case, power generation will be stopped.
The giant mother does not have a swimming ability to resist the sea current and drifts almost in the water basin. Therefore, the movement of the mother cannot be controlled by any means other than the water control. The water flow control plate redirects the seawater flow to the intake and uses the indirect intake method and the bifurcated intake method instead of the direct intake method to reduce the seawater flow velocity and prevent the clogging of the intake of the giant mariners. .
[Selection] Figure 1

Description

  The present invention relates to the prevention and exclusion of giant mariners that block the seawater intake screen for cooling such as nuclear power plants.

  Conventionally, the body of a giant marinade has a well-developed umbrella-shaped part made of agar, and moves on ocean currents and waves.

  The self-movement of the mothers periodically contracts the muscles of the umbrella, pushes the water downwards, and moves forward with the reaction, but there is no strong swimming power enough to counter the ocean currents.

  In general, many of them are warm-sealed. In recent years, the size of the jellyfish jellyfish has increased in size as the seawater temperature rises, and the jellyfish jellyfish has a diameter of 1 m or more and a weight of 150 kg or more. It is tightening.

  Together with moon jellyfish, giant sea turtles are attracted by the powerful seawater flow of cooling seawater intake pumps at nuclear power plants, etc., adsorbed to the foreign matter removal screen at the intake, and the opening area is greatly reduced, finally Folds up and closes the water intake screen, resulting in a situation where water intake becomes impossible, but at present there is no reliable exclusion method.

  In addition, in some aquatic animals such as dolphins and fish, etc., guidance exclusion technology by ultrasonic guidance etc. is observed, but the details of the detection function etc. are still unclear about the mothers, and it has reached practical use. Absent.

  Since there is almost no data regarding sensing of the response to infrared rays or the like, it is impossible to prevent and eliminate these systems.

  The current response method is that most of them are laying fishing nets around the intake, etc., generating a small water flow with an air pump, etc., capturing small moon jellyfish, etc., or dealing with partial return, etc. It is impossible to deal with the kind.

The current means of exclusion is to observe the drifting situation of giant mariners around the intake channel by means of patrol monitoring, etc., and catch them with fishing nets, etc., and dispose of them on land. Yes.
JP-A-1-176130 Japanese Patent Laid-Open No. 3-125825 Japanese Patent Laid-Open No. 10-183587

  As described above, there is no accurate method for eliminating giant dams at present.

  The present invention reviewed the conventional measures to prevent clogging by inefficient giants and relied on catching fishing nets to prevent adsorption of intake screens, and provided an economical and innovative clogging prevention device. It is intended.

  The present invention needs to provide an apparatus for preventing the drifting of giant mariners and blocking and adsorbing the intake screen, based on a completely new concept not related to the prior art.

  In order to prevent the drifting of giant mothers, the swimming ability of the mothers themselves is very low, and they are almost thrown into the basin of the water current. In order to control the movement of the mothers themselves, means other than water current control are not possible. In order to prevent drifting, we will provide the same-point concentrated drifting prevention technology by reducing the velocity of the seawater flowing into the water intake and directional dispersion to prevent clogging due to water intake screen adsorption.

  From the intake to the offshore, multiple seawater flow control boards and flocculate inflow prevention plates are arranged in a triangular shape to disperse the intake seawater flow and prevent the inflow of giant dams.

  The seawater flow that inclines against the seawater flow from offshore hits the oblique surface of the seawater flow control plate installed at an oblique angle and turns to the outer periphery. To the intake reservoir.

  Giant dams are blocked by the wreckage inflow prevention plate, flow out to the outer periphery due to the diversion of the seawater flow, and are pushed back offshore in the warm drainage flow by an auxiliary water flow pump or the like.

  The seawater flow control board is made of plastic fake wood such as ecoma wood, which has seawater resistance, is non-corrosive, floats in water with a specific gravity of 0.73, and has twice the strength of wood. To do.

  The intake of the seawater flow at the intake port is not a conventional single intake method, but a method of branching the tip of the intake port and squeezing from two directions, that is, a two-branch flow intake method.

  The tip of the intake port is branched and changed to take water from two directions, and the area of the intake port is further expanded to reduce the water intake speed, to reduce the water intake screen screening force, and to prevent water flow dispersion and adsorption.

  The seawater flow control plate forms a water intake reservoir in a state where the armor doors are laid sideways continuously in the sea.

  The seawater control plate is made of the same material and is configured to withstand waves by the structure and the reinforcing member, and is fixed to the seeker by the seabed fixing rope.

The seawater control board is projected above the sea level to a height of about 1.5 m or more from the average sea level, and a red warning light is installed at the top in order to prevent the giant sea turtles from jumping from the sea surface due to waves.

In addition, a floating screen made of the same material will be installed on the surface of the intake reservoir in order to prevent the huge dams from entering the river due to large waves during stormy weather.

  If possible, a sensor for detecting the drifting of giant mariners will be attached to the blocking fence, which is composed of the seawater control plate and the drifting material inflow blocking plate.

  During periods when there are few occurrences of giant dams such as during the winter season, remove the seabed anchor, lift it to the land, remove and clean the seaweed attached during the summer, and inspect and maintain structures, ropes, fasteners, etc. Prepare for the next occurrence.

  This occlusion prevention device can be used together with various existing devices for capturing moon jellyfish, and is necessary.

  As described above, the bifurcated water intake system of the present invention reduces the floating attraction of giant dams due to the reduction of seawater flow velocity.

  Adopting a method of indirectly taking water from a wide intake pool by installing a seawater flow control board eliminates the adsorption of the giant dam to the intake screen and eliminates the blockage of the water flow.

  The size of the indirect water collection reservoir by the seawater flow control board is designed in accordance with the site because of the fishing rights.

  Adopting an indirect water intake system with a wide intake pool by installing a seawater flow control board eliminates the direct adsorption of giant dams to the intake screen and solves the water flow blockage.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  In FIG. 1, 1 is a seawater flow control board, 6 is a seawater intake channel for cooling, 7 is a wide-angle water intake 8 is a weir for cross water intake, and 12 is a seawater flow. Reference numeral 13 denotes a giant dam.

  Seawater from the offshore forms a river-like flow to the intake installed in the sea away from the coast, and giant mariners approach the seawater flow from the offshore by waves, etc. Conventionally, to prevent this from adsorbing to the intake screen due to the strong suction force of the intake port, the intake port is divided into two and installed with the intake port facing the control direction. Is adopted.

  Also, in order to prevent clogging due to the adsorption of the giant maiden, the seawater flow control plate 3 is installed at a position away from the inlet, a wide water reservoir is created, and the indirect suction method is adopted to the intake screen. Water flow blockage due to adsorption of water is prevented.

Effective for preventing the attachment of giant dams that adhere to the intake screen of the location where a large amount of seawater is required for cooling a nuclear power plant, etc.

  In addition, it is effective in preventing the drift of substances that do not have self-swimming ability.

It is a figure which shows the displacement of a seawater flow by this invention. Structure diagram of seawater flow control board. Structure of intake port.

Explanation of symbols

1. Seawater flow control board. 2. Control plate mounting member. 3. Reinforcing member. 4). Rope for fixing the seabed. 5. sinker. 6). Seawater intake channel for cooling. 7). Wide angle water intake. 8). Weir for cross water flow intake. 9. Intake screen. 10. Floating screen. 11. Intake dam. 12. Sea current. 13. Giant dams.

Claims (3)

  Surrounding the intake with an armor door-shaped seawater control board that turns the offshore seawater flow to the outside, forming a water intake for taking water from the water intake reservoir. An apparatus for preventing blockage of a giant mine intake, characterized in that it is blocked by a control plate, and the mine that has been prevented from flowing is put on a diverted seawater flow to the outside.   Seawater flow diverter using an armored seawater flow control board.   A branch intake device that attenuates the flow velocity at the intake.

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