KR20050071831A - System and method to prevent the impingement of marine organisms at the intake of power plants - Google Patents

Abstract

The present invention relates to a power plant inlet inlet marine life removal system and removal method, the power plant inlet inlet marine life removal system of the present invention, marine life lifting device for lifting the marine life flowing into the inlet; The lifting device is installed to be inclined as a whole so as to block all or part of the intake port, and a plurality of vertically arranged to fit the width of the intake port by being fitted to the upper and lower sprocket wheels and to the endless track type rotary chain guided by the upper chain guide rail. Brush rotation screen is installed to move a plurality of brushes are installed between the brushes are caught or seated between the inclined upwards; And a scraper installed at an upper sprocket wheel part and scraping off marine life transported by a plurality of grooves and blades sandwiched or seated between the brushes, wherein the marine life discharge device comprises a screw or the like. Conveyor for transporting the marine life scraped by the scraper using; And a collection box for collecting marine life transported by the conveyor; thus, greatly increasing the processing capacity so as to facilitate the lifting of various marine life and to completely remove even when a large amount of marine life is introduced. It is possible to reduce the pressure drop of the seawater, to minimize the pressure drop of the seawater, and to enable the optimization of the device.

Description

System and method to prevent the impingement of Marine organisms at the intake of Power Plants}

The present invention relates to a system for removing marine organisms and a method for removing marine organisms inlet from a power plant inlet. The present invention relates to a system for removing inlet marine organisms and a method for removing the inlet of a power plant inlet to prevent the occurrence of frequent power plant ignition or shutdown.

Conventional power plant intake facilities for preventing the intake of marine life into the inlet, various equipment such as bar screen (Trash rake), traveling water screen (TWS) and drum screen (Drum screen) However, the removal efficiency of marine organisms of these conventional devices is insignificant compared to the characteristics of marine organisms introduced in large quantities at a particular time. Occurred frequently.

That is, a conventional bar screen, a trash lake, a rotating network screen, a drum screen, etc. installed in a seawater intake between a water intake port and a seawater circulation pump serve to block or remove foreign substances such as marine life. The devices can identify various cases by plant, which occur in large quantities in nearby seas during the seasons, marine ecological cycles, and typhoons, and thus fail to block or remove marine organisms that are temporarily introduced.

This conventional bar screen is a bar (bar) at regular intervals, to prevent the pressure drop is approximately 200mm bar intervals for the protection of the next stage of equipment only substantially inflow foreign matter of large or small inflow There is a limit to the blocking.

In addition, the conventional rake lake is a device that raises the rod (rake) when the rod (bar) is about 50 mm when caught in the algae and trash inflow, and the feed rate of the rake is very slow. It could not be handled upon inflow.

Meanwhile, Korea Utility Model Registration No. 20-323134 ("Trash Lake Combined with Removable Wire Mesh", announced on August 14, 2003) was designed to reduce the load of the screen of the mesh screen, which is expensive equipment. The high pressure drop coefficient and the low speed of the pitchfork have a problem that can cause damage to the device itself when the incoming marine life accumulates.

In addition, the conventional mesh screen, as described in the Republic of Korea Patent Publication No. 2004-0015423 ("Screen mesh fixing device of the mesh screen", published on February 25, 2003), several baskets (Screen) in the rotating chain The baskets are combined in series, and this basket is a structure in which a wire mesh is assembled in the outer frame.

The screen mesh fixing device relates to a rigid fixing device for preventing breakage of the screen fixing device. When a large amount of marine life is accumulated on the screen mesh (wire mesh), the load increases and thus the screen mesh and the screen fixing device are damaged. In recent years, more and more mesh sizes are used from 10mm × 10mm square to 3mm × 3mm square, so the pressure loss also increases due to the large resistance of the mesh. The possibility of breakage of the screen mesh and the screen fixing device is further increased.

Meanwhile, as can be seen in Republic of Korea Utility Model Registration No. 0323140 ("Direct Drive Type Rotating Mesh Screen", published on August 14, 2003), the conventional rotating mesh screen has an average speed of 3m / min in Korea and a high speed of use. The maximum design speed of 6m / min is usually less than 10m / min, so the processing capacity is so low that the removal of large amount of marine organisms is frequently failed. Although the direct drive method can be used to drive the rotating network at a linear linear speed of more than 22m / min, the actual linear velocity is higher when considering the inflow of seaweed during typhoon of Kori Nuclear Power Plant and Ulsan Power Plant. It is required.

In addition, the conventional drum screen used in place of the conventional rotating mesh screen in power plants such as Uljin nuclear power plant and Ulsan thermal power plant is a structure in which a wire mesh is assembled to the drum, and its functions and performances are similar to those of the conventional rotating mesh screen. The circumferential linear speed of this drum screen is operated at two speeds of 2.5m / min and 10m / min for Uljin Nuclear Power. have.

An object of the present invention for solving the above problems, by using a brush to facilitate the lifting of various marine life, while reducing the occurrence of load on the brush coupled to the chain at the same time the chain guide rail is installed only on the sprocket wheel and the upper surface Therefore, the present invention provides a marine inlet removal system and a removal method for a power plant inlet, which greatly increases the processing capacity to enable a high-speed rotation with a small driving resistance, thereby enabling perfect removal even when a large amount of marine organisms are introduced.

In addition, another object of the present invention, seawater is easily passed through the space between the brush and the brush to reduce the pressure drop of the seawater, floating the marine life by using air bubbles or water flow to the bottom of the inflow seawater by the brush rotating screen The present invention provides a system and a method for removing inlet marine organisms that can minimize the pressure drop of seawater because it is not blocked and opened without resistance.

In addition, another object of the present invention, it is possible to optimize the device, such as the design of the marine life floating device, the marine life lifting device and the appropriate brushes can be selected and replaced according to the type and inflow amount of the marine life in time. The present invention provides a system and a method for removing marine life from the intake of power plants.

Power plant inlet inlet marine life removal system of the present invention for achieving the above object is installed in the inlet of the power plant inlet inlet marine life removal system for removing the inlet marine life such as jellyfish, etc. Marine life lifting device for lifting marine life; And a marine life discharge device for discharging marine life lifted by the marine life lifting device to the outside, wherein the marine life lifting device is installed to be inclined as a whole so as to block all or part of the intake port, A plurality of brushes are installed in a caterpillar rotary chain that is connected to the sprocket wheel to fit the width of the water inlet and guided by the upper chain guide rail. A brush rotating screen for moving; And a scraper installed at an upper sprocket wheel part and scraping off marine life transported by a plurality of grooves and blades sandwiched or seated between the brushes, wherein the marine life discharge device comprises a screw or the like. Conveyor for transporting the marine life scraped by the scraper using; And a collection box for collecting marine life transported by the conveyor.

In addition, in order to prevent the inflow of seawater on the side of the brush rotation screen, the guide plate is installed on both sides of the brush rotation screen of the marine life lifting device so that the inflow seawater is guided to the brush rotation screen and drawn into the intake port.

In addition, in order to improve the applicability of the device, the brush of the brush rotating screen, the cross-section is formed in a variety of semi-circular inverted triangle, triangle, etc. according to the size and type of marine life, depending on the type and inflow of marine life It is possible to attach and detach the rotating chain so that a suitable brush can be selected and replaced.

On the other hand, the inlet marine life removal system of the power plant intake port of the present invention, installed in the front of the marine life lifting device, the bottom of the intake port is introduced into the intake to the position of the brush rotation screen of the marine life lifting device that obstructs the upper portion of the intake port The marine life floating device further comprises a, marine life floating device is arranged, the pipe is arranged in at least one or more heat is injected air and a plurality of it is repeatedly installed in the pipe to disperse the injected air A bubble generator comprising a nozzle to make; A water flow generator for generating water flow using a pressure difference of sea water such as a pump or a propeller; And any combination thereof.

On the other hand, the inlet marine life removal method of the power plant intake port of the present invention for achieving the above object, the marine life floating device for floating the marine life flowing into the intake port, and marine life to lift the marine life in the intake port using the infinite trajectory Intake inlet of power plant comprising a lifting device and a marine life discharge device for discharging lifted marine life to the outside In the marine life removal method using the marine life removal system, the inlet to reduce the pressure drop of the seawater flowing into the inlet Marine life floating step of floating the incoming marine life to a predetermined height using a bubble or the flow of water; Marine life lifting step of lifting the marine life injured by the bubble or water flow on the surface using the inclined infinite trajectory; And a marine life discharge step of discharging the marine life lifted over the water to the outside for easy transport processing.

Hereinafter, a system and a method for removing an inlet marine life inlet of a power plant intake port according to various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in Figures 1 and 2, the inlet marine organisms removal system of the power plant inlet in accordance with a preferred embodiment of the present invention, is installed in front of the inlet (1) of the power plant inlet marine, such as jellyfish (2) As to remove the organism, the marine life lifting device 10 and the marine life discharge device 20 is largely included, and in addition, the marine life floating device 30 may be configured to further include.

That is, the marine life lifting device 10 of the present invention can also lift the marine life by blocking all of the intake ports 1, but preferably, reduce the pressure drop of the seawater flowing into the intake port 1. Only a part of the upper portion of the intake port 1 so as to be interposed, the marine life floating device 30 can be installed so that marine life can be injured to the position where the marine life lifting device 10 is installed.

The marine life lifting device 10 of the present invention is to lift marine life such as the jellyfish 2 introduced into the water intake port 1, and the brush rotation screen 11 and the scraper 12 (Scrapper) are large. It is a structure comprised.

That is, the brush rotating screen 11, as shown in Figure 2, is installed to be inclined at a predetermined angle as a whole so as to block a portion of the upper portion of the intake port 1, the upper and lower sprocket wheels (13, 14) A plurality of brushes 16 in the orbital rotary chain 15 of FIGS. 4 to 6, which are engaged with each other and vertically arranged to fit the width of the intake port 1 and guided by an upper chain guide rail (not shown). Is installed is a device for moving the inclined upward inclined marine life is caught or seated between the brushes (16).

Here, the depth of the surface of the brush rotating screen 11 is installed to a depth enough to lift the marine life floated by the marine life floating device 30 to be described later or floated upward by the water flow. .

In addition, the scraper 12 is installed in the portion "A" of Figure 2, as shown in Figures 7 and 8, the upper sprocket wheel 13 of the brush rotating screen 11, The scraper 12 having a plurality of grooves and blades is a device that can directly scrape off the marine life transported between the brush 16 is caught or seated.

Such a scraper 12 is installed in a direction opposite to the lower sprocket wheel 14 in which the driven shaft 14a of FIG. 2 is installed by a direct contact method, not an uncertain method such as back washing. By installing the drive shaft 13a of the upper sprocket wheel 13 is installed, it is possible to separate and remove the entire amount of marine life that is seated and transported on the brush (16).

On the other hand, as shown in Figures 1 and 2, the marine life discharge device 20 of the present invention, as a device for discharging the marine life lifted by the marine life lifting device 10 to the outside, the screw 21 And a collection box 23 for collecting the marine life transported by the conveyor 22 and a conveyor 22 for transporting the marine life scraped off by the scraper 12.

In addition, as shown in Figures 1 and 2, in order to prevent the inflow of seawater to the side of the brush rotating screen 11 inflow to both sides of the brush rotating screen 11 of the marine life lifting device 10. Guide plates 3 are respectively installed so that seawater can be guided to the brush rotating screen 11 and drawn into the intake port 1.

On the other hand, as shown in Figure 2, the power plant inlet marine life removal system according to an embodiment of the present invention, the front of the marine life lifting device 10, is installed on the bottom surface of the intake port (1) the intake port It further comprises a marine life floating device 30 for injuring the marine life flowing into the water inlet (1) to the position of the brush rotation screen 11 of the marine life lifting device 10 to block a portion of the upper side (1) As the marine life floating device 30, as shown in Figure 2, the pipe 31 is arranged in at least one or more rows in which air is injected, and a plurality of air is repeatedly installed in the pipe 31 is injected A bubble generating device 33 including a nozzle 32 for dispersing is provided, or as shown in FIG. 3, a pressure difference of seawater such as a pump (not shown) or a propeller (not shown) is used. A water flow generator 34 for generating the water flow can be installed. Although not shown, the bubble generator 33 of FIG. 2 and the water flow generator 34 of FIG. 3 may be provided at the same time.

Here, in the bubble generator 33 installed at the inflow seawater bottom portion in front of the power plant intake port 1, the pipe 31 is arranged at right angles to the flow direction of the seawater, and three to 10 at intervals of approximately 500 mm. Two pipes 31 are repeatedly arranged to contain enough air for marine life, such as jellyfish and invaders, which are included in the inflowing seawater, so that the marine life with air can rise toward the surface of the seawater.

Particularly, in the case of the jellyfish 2, the swimming speed is significantly smaller than the seawater inflow rate, and the shape thereof can be easily changed in accordance with the water flow, so that instead of the bubble generator 33 of FIG. It is also preferable to apply the water flow generator 34 of the.

Here, the bubble generator 33 and the water flow generator 34 are respectively located at a position away from the intake port 1 and the pipe 31 and the nozzle 32 in consideration of the amount of action thereof, the speed and installation depth of the inflowing seawater. Yields can be optimized and optimized to maximize the flotation effect of the incoming marine organisms.

In addition, within the range in which the marine life of a sufficiently small size can be lifted, the installation interval of the brush 16 of the brush rotating screen 11 is increased, and the water intake port 1 is caused by the marine life floating device 30. In order to increase the area of the portion not blocked by the brush rotating screen 11 or to reduce the installation depth under the surface of the brush rotating screen 11, the pressure drop of the seawater introduced into the water inlet 1 is reduced. As such, the installation form of the brush 16 or the installation position of the brush rotating screen 11 may be optimized according to the size and type of marine life and the amount of seawater required to flow into the intake port 1.

On the other hand, as shown in Figs. 4 to 5, the brush 16 of the brush rotating screen 11 is a semi-circular shape whose cross section is rounded upward in Fig. 4 according to the size or type of marine life, and upward in Fig. 5. This flat inverted triangle, the top of Figure 6 can be formed in a variety of ways, such as a sharp triangle, these brushes (16) can be replaced by selecting a brush (16) suitable for the type and amount of inlet marine life by time. It is preferable that the rotating chain 15 is detachably installed.

Therefore, when describing a method of removing the marine life flowing into the intake of the power plant using the inlet marine life removal system of the power plant inlet, the inlet (1) to reduce the pressure drop of the seawater flowing into the inlet first The incoming marine life is floated to a certain height by using bubbles or water flow, and the marine life injured by bubbles or water flow is lifted onto the surface using an inclined infinite trajectory, and then the marine life lifted above the surface is transferred. It is made of steps to be discharged to the outside for easy processing.

Therefore, when applying the removal system and removal method of the inlet of the power plant inlet of the present invention, the linear velocity of the rotation of the brush 16 is less load generated on the brush 16 coupled to the chain 15, the upper sprocket wheel Since a chain guide rail (not shown) may be provided only on the upper surface between the drive shaft 13a on which the 13 is installed and the driven shaft 14a on which the lower sprocket wheel 14 is installed, the resulting drive resistance is small and high speed. Rotation (theoretically, 60 to 80 m / min) is possible, which can greatly increase the processing capacity compared with the linear speed of 22 m / min of the conventional mesh screen and the linear speed of 10 m / min of the drum screen.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

For example, in the embodiment of the present invention, the marine life floating device, the shape of the brush or marine life discharge device using a screw, etc. are limited to the drawings, in addition to a variety of forms without departing from the spirit of the present invention The marine living flotation device, brush or marine life discharge device may be applied.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and the technical spirit thereof.

As described above, according to the marine intake system and the removal method of the inlet of the power plant inlet of the present invention, it is possible to facilitate the salvage of various marine organisms, greatly increase the treatment capacity so that the complete removal is possible even when a large amount of marine organisms are introduced, It has the effect of reducing the pressure drop, minimizing the pressure drop of sea water, and enabling the optimization of the device.

1 is a front view showing a marine inlet marine system for removing power plant inlet in accordance with a preferred embodiment of the present invention.

2 is a side view of FIG. 1.

3 is a side view illustrating another example of the marine living floating apparatus of FIG. 2.

4 is an example showing the section IV-IV of the brush rotation screen of the marine life lifting device of FIG.

5 is another example of the brush of FIG. 4.

6 is another example of the brush of FIG. 4.

7 is an enlarged view of a portion “A” of FIG. 2.

8 is an enlarged rear view of FIG. 7 viewed from the rear;

Claims (7)

In constructing the inlet marine life removal system of the power station inlet, which is installed at the inlet of the power plant and removes inlet marine life such as jellyfish, Marine life lifting device for lifting the marine life flowing into the intake; And a marine life discharge device for discharging the marine life lifted by the marine life lifting device to the outside. The marine living lifting device, It is installed to be inclined as a whole so as to block all or part of the intake port, a plurality of brushes are fitted to the upper and lower sprocket wheels are arranged vertically to fit the width of the intake port, a plurality of brushes in the trackless rotary chain guided by the upper chain guide rail A brush rotation screen installed to move upwardly inclined marine life, which is installed or caught between the brushes; And And a scraper (Scrapper) installed on the upper sprocket wheel portion, scrapers (Scrapper) scraping the marine life transported by the plurality of grooves and blades sandwiched or seated between the brush. The method of claim 1, The marine organism discharge device, A conveyor for transporting marine life scraped by the scraper using a screw or the like; And A collection box for collecting marine life transported by the conveyor; power plant inlet inlet marine life removal system comprising a. The method of claim 1, Both sides of the brush rotation screen of the marine biological lifting device guide plate is installed so that the inlet sea water is guided to the brush rotation screen is introduced into the intake port, characterized in that the plant inlet inlet marine life removal system. The method of claim 1, The brush of the brush rotation screen has various shapes such as triangles, inverted triangles, semi-circles, etc. according to the size or type of marine life, and selects and replaces brushes suitable for the type and amount of inflowing marine life by time. Inlet marine inlet removal system, characterized in that the removable chain and the rotation chain. The method of claim 1, The inlet marine life removal system of the power plant inlet of the present invention is installed in the bottom of the intake port, in front of the marine life lifting device, and enters the inlet to the position of the brush rotation screen of the marine life lifting device which intercepts an upper portion of the intake port. It further comprises a marine life floating device to injure the living body, The marine living floating device, A bubble generator including a pipe arranged in at least one column into which air is injected and a nozzle dispersing the injected air by repeatedly installing a plurality of pipes; A water flow generator for generating water flow using a pressure difference of sea water such as a pump or a propeller; And inlet marine inlet removal system, characterized in that made by selecting any one of them. The method of claim 5, The brush spacing of the brush rotation screen and the area of the portion not blocked by the brush rotation screen of the intake port by the marine living flotation device so as to reduce the pressure drop of the seawater flowing into the intake port; Marine life removal system of the inlet of the power plant intake, characterized in that to optimize the installation depth and the like under the water surface. And a marine life lifting device for floating the marine life flowing into the intake, a marine life lifting device for lifting the marine life in the intake port using an infinite trajectory, and a marine life discharge device for discharging the lifted marine life to the outside. In the marine life removal method using the inlet marine life removal system of the power plant intake, Marine life floating step of floating the marine life flowing into the intake to a predetermined height by using a bubble or water flow to reduce the pressure drop of the sea water flowing into the intake; Marine life lifting step of lifting the marine life injured by the bubble or water flow on the surface using the inclined infinite trajectory; And Marine life removal step of discharging the marine life lifted over the water to the outside for easy transfer processing;