KR20130020189A - Tidal current coast applied seawater intake device - Google Patents

Abstract

PURPOSE: A seawater intake system suitable for seawater environment having ebb and flow of the tides is provided to prevent blockage of filter pores by reverse-washing filter sands filled in an intake station and to intake high quality seawater by maintaining performance of filter sands by collecting sludge generated when reverse-washing. CONSTITUTION: A seawater intake system(100) suitable for seawater environment having ebb and flow of the tides includes a water intake frame(110), a plurality of seawater intake pipes(120), an aeration pipe(130) and a sludge collection pipe(140). The seawater intake pipes are parallelly arranged in the lower side of the intake frame and have a dual pipe structure. The aeration pipe is arranged in the lower side of the seawater intake pipe and is fixed to the intake frame. The sludge collection pipe is arranged in the upper side of the seawater intake pipe, collects and removes sludge generated from the reverse-washing process simultaneously with the aeration pipe.

Description

Tidal current coast applied seawater intake device suitable for seawater environment with tidal difference

The present invention relates to a seawater intake device for taking seawater from the shore of the tidal tidal difference, in particular to backwash the filtered sand filled in the intake and at the same time to collect the sludge generated during washing to maintain the performance of the filtered sand The present invention relates to a seawater intake system suitable for a seawater environment in which tidal waters can be taken in.

Coastal seawater applications, such as fish markets, fisheries, sushi restaurants, and farms, require clean seawater. Coasts with large tidal differences, such as the west coast of Korea, have clay quality, and the clay quality contains floating matters such as sewage, and the seawater taken from the coast is supplied to the user through a separate water treatment process. At this time, the water treatment process is a physical and chemical process, so the use fee and maintenance cost are high.

As a background technology of the present invention, Korean Laid-Open Patent Publication No. 10-2010-0113688 describes a seawater intake system utilizing a sand layer of the sea as a filtration layer. In this background, tunnels or ditches excavated to a certain depth below sea level, not far from the coast or the coast; A plurality of collecting pipes, which are located in the sand or crushed rock layers of the sea bed, are installed toward the sea in a ditch or tunnel for collecting filtered seawater; A flow control valve positioned at an end of each collection pipe and controlling a flow rate of the filtered seawater coming out of the collection pipe; The present invention proposes a seawater intake system that obtains filtered seawater by using a sand layer of the sea consisting of a water pipe and a water pump that collects filtered seawater from each collection pipe and transports it out.

However, the background art has a problem that can not be used in the coast having a sand because the filter layer should be used as the sand layer of the sea. There is also an increase in the cost of constructing a tunnel. There is also a problem that there is no solution to the blocking of the filter pores.

In Korean Patent Registration No. 10-0782359, 'seawater collecting facility and its construction method' are presented. Patent Document 1 is to install a landfill to the bottom of the bottom deeper than the top of the bottom of the four floors on the beach at the location, and the bottom of the sump is sealed to install a bottom to block contaminated seawater or fresh water. The first end is connected to the sump well, and the other end is provided by embedding a plurality of intake pipes so as to be located at the bottom of the sea floor where water pressure is being applied by the sea level. However, Patent Literature 1 is difficult to apply to the limit of the amount of natural water collection on the coast where the water pressure is not constant by tidal tides because the sea water is naturally filtered through the bottom of the seabed and collected by the sump well by the water pressure of the sea surface. . In addition, there is a problem that there is no way to solve this when the voids in the seabed four layers. In Korea Registered Room Registration No. 20-0364438, the 'embedded seawater suction hood' is presented. Patent document 2 is a technique which inhales seawater from the suction horizontal pipe member embedded in the bottom sea sand layer. However, since Patent Document 2 is installed at a depth of more than 1 km from the coast, the length of the pipe for transporting seawater to land is long, and it is difficult to install in a place without the royal sand layer. In addition, it is not possible to use in tidal and tidal waters such as the west coast of Korea, there is no problem to solve this problem if the sludge is attached to the royal sand layer.

Therefore, the present invention was devised in view of the above circumstances, and is suitable for the seawater environment with tidal difference that can immediately clean up seawater by filtering seawater in the sea area with tidal difference. The purpose is to provide a seawater intake device.

According to a preferred embodiment of the present invention for achieving the above object,

In the water intake device which is installed on the bottom side of the intake station that is excavated to a certain depth from the low tide sea level on the shore where tidal tidal water occurs,

Intake system,

A water intake frame forming a frame of a rectangular shape;

A plurality of seawater intake pipes having a double pipe structure arranged in parallel with each other on the lower side of the intake frame;

An acid pipe disposed below the seawater intake pipe and connected to each other in parallel with each other and fixed to the water intake frame;

It is characterized in that it comprises a sludge collecting pipe which is disposed above the seawater intake pipe and parallel to each other in parallel and fixed to the water intake frame.

According to another preferred embodiment of the present invention,

A backwash blower is connected to inject air into the diffuser.

According to another preferred embodiment of the present invention,

A water intake pump for supplying backwash water to the seawater intake pipe;

It is connected to the suction port side of the intake pump, it is characterized in that the reservoir is further installed to store a predetermined amount of sea water received from the sump.

According to another preferred embodiment of the present invention,

The sea intake pipe,

An intake inner pipe having a predetermined length in one end of a closed pipe-shaped cross section and having a plurality of sea water intake holes in a length direction thereof;

A water intake outer tube surrounded by a perforation network having a perforation hole smaller than the size of the filtration yarn at the periphery of the water intake tube;

It characterized in that it comprises a gap retaining ring installed to form a pressure control and seawater inlet space between the intake inner pipe and the intake outer pipe.

According to another preferred embodiment of the present invention,

Diffuser,

A plurality of air distribution pipes arranged in parallel and parallel to each other;

An air discharge pipe connected in parallel to the air distribution pipe in a direction perpendicular to the air distribution pipe and having a plurality of exhaust holes arranged in a length direction on the top;

It is characterized in that it comprises a bubble network located on the upper surface of the exhaust hole and bonded to the air discharge pipe.

According to another preferred embodiment of the present invention,

The sludge collector tube is

A sludge conduit pipe disposed in the longitudinal direction of the intake frame;

It has a diameter smaller than the diameter of the sludge confluence pipe is connected in parallel to the sludge confluence pipe, characterized in that it comprises a plurality of single sludge collecting pipe having a sludge collecting port in the longitudinal direction on the lower side.

The seawater intake device suitable for the seawater environment with the difference between tidal tides according to the present invention can backwash the filtered sand filled in the intake station, preventing the blockage of the filtration pores, and collecting the sludge generated during the backwashing, It can maintain high performance and take good quality clean sea water.

In addition, since it is installed close to the shore in close contact with the land, the intake pipe can be shortly constructed, and construction is easy.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a conceptual view illustrating installation of a seawater intake device according to an exemplary embodiment of the present invention.
Figure 2 is a plan view of the seawater intake device according to an embodiment of the present invention.
Figure 3a is a block diagram of a preferred seawater intake device of the present invention.
3B is a front view of FIG. 3A.
3C is a side view of FIG. 3A.
Figure 4 is a view showing the installation state of the water intake frame and the sea intake pipe in Figure 3a.
Figure 5a is a perspective view of the seawater intake pipe applied to the seawater intake device of the present invention.
5B is an enlarged view of the KK line cross section in FIG. 5A.
Figure 6 is a perspective view and enlarged exploded perspective view of the diffuser applied to the seawater intake device of the present invention.
Figure 7 is a perspective view of the sludge collecting tube applied to the seawater intake device of the present invention.
Figure 8a is a view showing the filtration flow when seawater intake in the seawater intake device according to the present invention.
Figure 8b is a view showing the filter washing and sludge suction process during the backwashing process in the seawater intake apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

Seawater intake device 100 suitable for the tidal sea environment with the difference between tidal tide according to the present invention has been exploded at a predetermined depth (h) from the low tide sea level (G ₀ ) on the coast where only the tide is occurred as shown in Figs. It is installed in the intake station 2. That is, the water intake device 100 is installed on the bottom side of the water intake (2).

Intake apparatus 100 is provided with a water intake frame 110 forming a frame of a rectangular shape as shown in Figs. Intake frame 110 is configured along the edge of the rectangular shape has a structure that is open to the six sides. Intake frame 110 is provided with a seawater intake pipe 120, diffuser 130 and sludge collection pipe 140.

Seawater intake pipe 120 is disposed on the lower side in the water intake frame (110). Seawater intake pipe 120 is arranged in parallel with each other in the longitudinal direction of the water intake frame (110). Seawater intake pipe 120 is connected to the pumping means and pipes in the pump room box 300. The seawater intake pipe 120 has a double pipe structure. The seawater intake pipe 120 is a water intake pipe having a plurality of seawater intake holes 122a distributed on the outer circumference with a pipe-shaped cross section in which one end of the inlet 122b is formed and the other end is closed, as shown in FIGS. 5A and 5B ( 122) and a water intake outer tube 124 surrounded by a perforated network having a perforated hole 124a smaller than the size of the filter sand 200 around the outer periphery of the water intake inner tube 122, the water intake inner tube 122, and water intake Consists of a gap retaining ring 126 is installed to form a pressure control and seawater inlet space between the outer tube (124). In this case, the seawater intake pipe 120 may be configured by connecting a plurality of pipes to each other through a flange joint when the length is long.

The diffuser 130 is used for backwashing. 3A, 3C, and 6, the diffuser 130 is disposed below the seawater intake pipe 120 and is fixed to the water intake frame 110. The diffuser 130 includes a plurality of air distribution pipes 132 and air distribution pipes 132 disposed at one end and connected in parallel to each other in parallel with each other and having the air supply 130a at one end thereof, and connected in parallel to the air distribution pipes 132 at right angles. And an air discharge pipe 134 having a plurality of exhaust holes 134a arranged in the longitudinal direction at the top thereof, and a bubble network 136 positioned on the upper surface of the exhaust hole 134a and joined to the air discharge pipe 134. It is. The bubble net 136 is perforated with a hole smaller than the size of the exhaust hole 134a.

The sludge collection pipe 140 is used to collect and remove the sludge generated in the back washing process together with the diffuser 130. 3A and 7, the sludge collection pipe 140 is disposed above the seawater intake pipe 120. The sludge collection pipe 140 is connected to the sludge confluence pipe 142 having a diameter smaller than the diameter of the sludge confluence pipe 142 and the sludge confluence pipe 142 disposed in the longitudinal direction in the intake frame 110, And a plurality of single sludge collecting pipes 144 having sludge collecting holes 144a distributed in the longitudinal direction on the lower side.

Here, the back washing blower 410 is installed in the pump chamber box 300 to inject air into the diffuser 130. The air outlet of the back washing blower 410 is connected to the diffuser 130 through the outer flange pipe of the pump chamber box 300. In addition, a storage tank 500 for storing the backwash water is further installed on one side of the pump chamber box 300 to supply the backwash water to the seawater intake pipe 120. Water stored in the reservoir 500 may be supplied from the intake pump 400 as sea water.

Filtration yarn 200 is filled in the intake (2) to filter the seawater to be sucked into the intake device 100, preferably may be a silica sand made mainly of silicon having a constant pore of 2 ~ 5mm. . Filtration yarn 200 is filled in the intake (2) to bury the intake device 100 is filled to a position lower than the position of the sludge collecting port (144a). Therefore, the sludge collecting port 144a is not located in the filter sand 200 layer. As a result, a layer of a constant interval is maintained between the upper surface of the filter sand 200 and the single sludge collection tube 144, and the volume of the gap layer becomes a floating layer capable of floating the sludge float after backwashing.

The pump chamber box 300 is located near the water intake apparatus 100 and is installed on the same ground as the low water level so as to be immersed in the high water during the high water level (G _H ). The pump room box 300 is made of concrete reinforcement in advance and constructed on site. The pump chamber box 300 is provided with a waterproof flange for connecting various pipes, and is connected to the seawater intake pipe 120, the diffuser 130, and the sludge collection pipe 140 through the waterproof flange. In the pump room box 300 is connected to the seawater intake pipe 120 of the water intake device 100 is provided with a water intake pump 400 for sucking and supplying the seawater at the same time. The water intake pump is preferably installed as a non-suction single stage volute pump. This is because the cavitation phenomenon is prevented when the non-suction single-stage volute pump is used, and pumping suction may occur even at low tide, so durability and pumping efficiency are excellent.

Unexplained symbol '600' is 'water catch' and '700' is 'quick filtration device'.

The construction method of the seawater intake apparatus comprised in this way is demonstrated.

First, the intake station 2 is constructed by carrying out a trench at a predetermined depth h from the low tide sea level G ₀ on the shore where tidal tides occur. At this time, the intake station 2 is constructed so that the width, width and height of the intake device 100 accommodates the intake device 100 but is provided with sufficient space for the filter yarn 200 to be filled to a certain height.

Next, the intake device 100 is seated on the bottom side of the intake station 2 through the crane equipment.

Next, the filter sand 200 is filled to an appropriate height in order to filter the seawater to be sucked into the water intake device 100 in the intake station 2.

Next, the pump chamber box 300 is installed on the same ground as the low water sea level G ₀ , which is located near the water intake apparatus 100. Preferably, the pump chamber box 300 is installed on the rear land side of the intake apparatus 100.

Then, various pipes of the water intake device 100 are connected to the pump room box 300 through a waterproof flange. At this time, the pipe connection is preferably carried out at low water.

Thereafter, a reservoir 500 for supplying backwash water to the water intake device 100 is installed at one side of the pump chamber box 300.

The operation of the seawater intake device constructed and constructed as described above will be described.

Seawater withdrawal and filtration process

First, when the intake pump 400 in the pump room box 300 is operated, suction power is generated in the seawater intake pipe 120 of the intake device 100, so that seawater is collected. At this time, the clean seawater filtered while passing through the filter sand 200 layer in the D direction as shown in Figure 8a is taken in the seawater intake pipe (120).

The path of the seawater withdrawn from the seawater intake pipe 120 is introduced through the intake external pipe 124 and then through the seawater intake pipe 122a via the intake internal pipe 122. At this time, the interval maintaining ring 126 creates a pressure control and seawater inflow space between the intake inner tube 122 and the intake outer tube 124, so that suction of the filtered seawater is continuously performed without being short-circuited. The clean sea water suctioned from the intake pump 400 is supplied to the place of use through the sea water supply pipe 15.

At this time, in the filter sand 200 layer, the floating material is removed in the intake process mainly by the sieving action, the blocking action, the gravity sedimentation action, and the clean sea water is taken into the seawater intake pipe 120.

On the other hand, the filtration efficiency is improved by the change in the permeation pressure applied to the filter sand 200 layer by the restoring force of the sea level due to the algae generated from the shore, at this time, the fine suspended matter filtered by the filter sand 200 is leaked to the outside Sustained filtration can be obtained. In addition, the cycle of the backwashing process to be described later can be extended to the maximum.

<Backwashing Process>

On the other hand, if you want to remove the suspended matter or clay causing clogging the filter sand 200 layer is subjected to a backwash process.

This backwashing process blows air into the diffuser 130 and separates them from each other in a filter sand mixed with suspended matter or clay material. Secondly, the backwash water is supplied to the seawater intake pipe 120 to float the clay material. After that, the suction force is generated in the sludge collecting tube 140. At this time, between the upper surface of the filter yarn 200 and the single sludge collection tube 144 is a layer of a predetermined interval is set, the volume of the interval layer becomes a floating layer that can be floated sludge floating after backwashing sludge collection tube ( 140 is to collect the clay contained in the rich layer.

When the backwash blower 410 connected to the diffuser 130 starts to operate, the air introduced into the pump chamber box 300 flows in through the air distribution pipe 132 and the exhaust hole 134a is disposed in the air discharge pipe 134. Through is discharged in the U ₁ direction as shown in Figure 8b. At this time, the air passing through the exhaust hole 134a rises in the bubble state by the bubble network 136 and penetrates into the filter sand 200 layer. At the same time, the seawater in the reservoir 500 is supplied to the seawater intake pipe 120 by the reverse operation of the intake pump 400 and is discharged in the U ₂ direction through the perforation hole of the intake external pipe 124.

As described above, in the backwashing process, the sludge adhering to the filter sand 200 layer is forcibly released by discharging bubbles and backwashing water. Then, when the pump (not shown) connected to the sludge collecting pipe 140 is operated, the sludge separated from the filtrate 200 is collected through the sludge collecting port 144a of the sludge collecting pipe 140 and through an underwater discharge pipe (not shown). Spill outward (sea).

As described above, in the backwashing process, the sludge adhering to the filter sand 200 is separated and suspended by injecting bubbles and supplying backwash water from the intake apparatus 100, and then, the suspended sludge is collected and removed to the outside. ) Exhibits a functioning filtration and can continuously obtain high quality clean seawater.

In this way, the present invention can backwash the filter sand 200 installed below the water level at the time of low tide at the coast where only the algae occurs, and the sludge adsorbed to the filtered sand 200 can be separated and collected. Can improve the filtration efficiency. In addition, the seawater is filtered through the filled filter sand 200 is withdrawn to the intake device 100 may be supplied with clean filtered seawater. In addition, the water intake device 200 is installed near the shore in contact with the land is easy to construct. In addition, the collected seawater is clean and does not have to go through the post-treatment process, so the production cost is low and can be supplied cheaply to the user. In addition, since the treatment cost of the post-treatment process after seawater filtration is eliminated, maintenance costs can be significantly reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

2: intake
100: intake device
110: water intake frame
120: seawater intake pipe
122: water intake pipe
124: intake exterior
126: spacing ring
130:
132: air distribution pipe
134: air discharge pipe
136: Bubble net
140: sludge collection tube
142: sludge confluence pipe
144: single sludge collection tube
200: filter yarn
300: pump room box
400: intake pump
500: reservoir

Claims (6)

In the water intake device 100 which is installed on the bottom side of the intake station 2, which is excavated from the low tide sea level (G ₀ ) to a certain depth (h) on the shore where tidal tides occur.
Intake device 100,
Intake frame 110 forming a frame of the rectangular shape;
A plurality of seawater intake pipes 120 having a double pipe structure arranged in parallel with each other on the lower side of the intake frame 110;
An acid pipe 130 disposed below the seawater intake pipe 120 and connected in parallel to each other in parallel and fixed to the water intake frame 110;
The seawater is disposed above the seawater intake pipe 120 and at the same time connected in parallel with each other, the sludge collection pipe 140 is fixed to the water intake frame 110, characterized in that the seawater suitable for the seawater environment with the difference between tides only Intake device. The method according to claim 1,
The backwater blower 410 is connected to the diffuser 130 to inject air, characterized in that the seawater intake device suitable for the seawater environment with a tidal difference. The method according to claim 1,
A water intake pump 400 for supplying backwash water to the seawater intake pipe 120;
Seawater intake device suitable for the seawater environment with the difference between tidal water, characterized in that the reservoir is connected to the inlet side of the water intake pump 400 and received from the sump (600) for storing a certain amount of seawater. The method according to claim 1,
The seawater intake pipe 120,
An intake inner tube 122 having a plurality of sea water intake holes 122a formed at a predetermined length in a pipe-shaped cross section whose one end is closed;
An intake outer tube 124 surrounded by a perforated network having a perforated hole smaller than the size of the filtration yarn around the intake inner tube 122;
Suitable for the seawater environment with the difference between tidal water, characterized in that it comprises a gap retaining ring 126 is installed between the intake pipe 122 and the intake pipe 124 to form a pressure control and sea water inlet space Seawater intake device. 3. The method according to claim 1 or 2,
The diffuser 130,
A plurality of air distribution pipes 132 arranged to be connected in parallel to each other;
An air supply pipe 134 connected to the air distribution pipes 132 in parallel at right angles and having a plurality of air supply holes 134a arranged in a length direction thereon;
A seawater intake apparatus suitable for a seawater environment having a difference between tidal tides, comprising a bubble network 136 positioned on the top surface of the air supply hole 134a and joined to the air supply pipe 134. The method according to claim 1,
The sludge collection tube 140,
A sludge confluence pipe 142 disposed in the longitudinal direction of the intake frame 110;
A plurality of individual sludge collection pipe 144 having a diameter smaller than the diameter of the sludge confluence pipe 142 and connected in parallel to the sludge confluence pipe 142 and having a sludge collecting port 144a in the longitudinal direction on the lower side thereof. Seawater intake device suitable for seawater environment with a tidal difference, characterized in that it comprises a.

Images