KR102496028B1 - Underwater sediment removal device at power plant intake port - Google Patents

Abstract

The present invention relates to a water intake sediment removing device for removing sediment accumulated on an underwater floor of a water intake of a power plant. The water intake sediment removing device comprises: an input frame unit; a transfer unit coupled to the input frame unit to be movable along the longitudinal direction of the input frame unit; a pump unit that moves along with movement of the transfer unit while being fixed to the transfer unit and sucks sediment accumulated on an underwater bottom of a water intake to discharge it through a discharge hose that can be connected to one side; and a moving force providing unit for providing an external force to the transfer unit so that the transfer unit moves along the longitudinal direction.

Description

Underwater sediment removal device at power plant intake port}

The present invention relates to a water intake sediment removal device for removing sediment accumulated on the bottom of a water intake of a power plant water intake.

In a power plant using seawater as cooling water, such as a thermal power plant or a nuclear power plant, a water intake is formed as a structure for taking cooling water from a water source (sea water). In order to maintain water intake facilities such as a water intake pump and a waste removal device used in the water intake, the inflow of seawater from the water intake must be blocked.

In order to block the inflow of seawater from the water intake, a stop gate of steel structure is installed, and the barrier wall is lowered along the guide rails formed on both side walls of the water intake through the water intake entrance to block the water intake and block the inflow of seawater.

However, since sediment is usually accumulated on the bottom of the water intake, it is difficult to install a barrier wall without removing the sediment. Therefore, prior to the installation of the barrier, the sediment on the submerged bottom of the water intake must be removed.

Conventionally, the removal of the sediment at the water intake is performed by direct input of a diver. This work method is very dangerous as divers work directly at a depth of about 10 meters underwater, and personal accidents of industrial divers frequently occur. In addition, safety regulations stipulate divers' 'diving time', and divers use suction Due to the poor performance of removal equipment such as pumps, there are many problems, such as the total work period per intake port taking more than 2 to 3 days.

Even when the removal of sediment from the intake is carried out with a specially manufactured removal equipment, not by a diver, the conventional removal equipment has a complex structure and is bulky, so it is necessary to inevitably change the structure of the intake structure itself to insert the equipment. The process is complicated, inconvenient, and time-consuming, and the performance of the removal equipment is also poor, so the removal efficiency of the sediment is not satisfactory.

In addition, although high-voltage transmission devices should not be used so as not to affect the facilities around the water intake due to electric leakage, there is a problem of having to bear the risk of electric leakage due to the inclusion of transmission devices due to limitations in technology.

Due to the problems of the conventional water intake sediment removal method or equipment, the development of a water intake sediment removal device capable of safely and quickly removing sediment while having excellent performance, manufacturing and ease of use is required as an urgent task.

Korean Patent Publication No. 10-2006-0080672 (published date: 2006.07.11)

The present invention has been made to solve the problems of the prior art, and is intended to provide a water intake deposit removal device capable of safely, quickly and effectively removing water intake deposits.

An intake port sediment removal device according to an embodiment of the present invention includes an input frame unit that can be put into water through an intake inlet of a power plant, a transfer unit coupled to the input frame unit to be movable along the longitudinal direction of the input frame unit, the A pump unit that is fixed to the transfer unit and moves along with the movement of the transfer unit, sucks in sediment accumulated on the water bottom of the water intake and discharges it through a discharge hose that can be connected to one side, and the transfer unit so that the transfer unit moves along the longitudinal direction. It includes a moving force providing unit that provides an external force to the.

In the intake port deposit removal device according to an embodiment of the present invention, the moving force providing unit is connected to the input frame unit 100 at both ends so as to be elastically movable in the longitudinal direction and is disposed to extend in the longitudinal direction; a chain; It may include a main sprocket wheel coupled to the chain while being rotatably coupled to the transfer unit and moved along the chain while being rotated, and a rotational force providing unit providing an external force to rotate the main sprocket wheel.

In the water intake deposit removal device according to an embodiment of the present invention, the input frame unit includes at least one first rail surface formed to be movable in the longitudinal direction while the lower surface of the upper roller is in contact with, and the upper surface of the lower roller At least one second rail surface formed so as to be movable in the longitudinal direction while being in contact therewith is provided, and the transfer part includes a transfer plate to which the pump unit is fixed, at least one support bar formed on the transfer plate, The upper roller rotatably coupled to the support bar and disposed so that its lower surface is in contact with the first rail surface, and the lower roller rotatably coupled to the support bar and disposed so that the upper surface is in contact with the second rail surface can do.

In the water intake deposit removal device according to an embodiment of the present invention, the input frame unit includes a post frame disposed to face each other on both sides of the input frame unit, and a fixing piece coupled to the post frame to be elastically movable in the longitudinal direction. Provided, the chain can be moved elastically in the longitudinal direction while both ends are fixed to the fixing piece.

In the water intake deposit removal device according to an embodiment of the present invention, when the input frame unit is lowered toward the bottom of the water intake port while being fixed to the side of the water intake frame unit, the guide unit is further guided along the guide rail formed on the water intake wall surface and lowered. Including, but the guide part, a pair of support plates disposed to face each other while being fixed to the side of the input frame unit, and rotatably coupled to the support plate while being disposed between the pair of support plates, and the guide rail It may include at least one guide roller that is coupled to and can be moved while being guided along the guide rail.

In the intake port deposit removal device according to an embodiment of the present invention, a position fixing unit for fixing the position of the input frame unit while pressing the wall surface of the intake port according to withdrawal while being fixed to the side of the input frame unit is included, The fixing part includes a fluid pressure cylinder in which the piston rod is drawn in the direction toward the water intake wall surface or drawn in the opposite direction while being fixed to the side of the input frame unit, and is formed at the end of the piston rod according to the withdrawal of the piston rod. A pressure plate for pressing a wall surface of the water intake port may be included.

In the water intake deposit removal device according to an embodiment of the present invention, the discharge frame portion coupled to the input frame portion to be detachably mounted on the upper side of the input frame portion and the rotating shaft provided in the center are rotatably coupled to the discharge frame portion It further includes a hose reel portion formed so that the discharge hose can be wound or unwound according to rotation, the discharge hose may be connected to one side of the rotation shaft portion, and the sediment discharged through the discharge hose is disposed at the end of the rotation shaft portion. It is possible to provide a discharge path through which it can be discharged to the outside.

Intake port sediment removal device according to the present invention, while the transfer unit is movably coupled to the input frame unit and the pump unit is fixed to the transfer unit, the pump unit is moved in the transverse direction while the input frame unit approaches the bottom of the water intake port to suction and remove sediment do. Since the movement control of the transfer unit and the operation control of the pump unit are performed by the operator outside of the water, the advantage of safely, quickly and effectively removing sediment without risk of accidents in the work process by conventional divers is provided. .

In addition, when the suction pump developed by the present applicant is applied to the water intake sediment removal device according to the present invention, the components forming the sediment discharge pressure conditions are arranged in a row along the axial direction within the cross-sectional area of the discharge portion The volume is minimized while ensuring suction performance. Therefore, it is possible to provide a removal device that is easy to put in and use through the inlet of the existing water intake port without applying structural changes to the inlet.

In addition, the inlet sediment removal device according to the present invention includes a guide part so that the input frame part and the discharge frame part can descend while being guided along the guide rail formed on the wall surface of the existing water intake structure, so that the input process of the removal device is stable and fast. can proceed

In addition, the intake port deposit removal device according to the present invention includes a position fixing unit, so that when the input frame unit approaches the intended position in the water, the position can be quickly and stably fixed using the intake wall surface. The removal of sediment can be carried out stably and quickly.

In addition, the water intake sediment removal device according to the present invention further includes a discharge frame unit detachably coupled to the input frame unit and a hose reel unit rotatably coupled thereto, so that winding and management of the discharge hose are easy, and discharge Since the frame part and the input frame part can be transported and put together by a crane, the operation convenience of the removal device is improved.

1 is a front perspective view of a water intake port deposit removal device according to an embodiment of the present invention;
Figure 2 is a rear perspective view of the removal device shown in Figure 1;
Figure 3 is a view from the inside of the side of the input frame shown in Figure 1,
Figure 4 is a view of the transfer unit shown in Figure 1 viewed from the inside of the input frame unit;
Figure 5 is a view showing the pump shown in Figure 1;
6 is a partial cutaway view of the suction pump shown in FIG. 5;
7 is a view showing a brush included in the pump unit shown in FIG. 1;
8 is a main part view showing a post frame and a fixing piece;
9 is a main part diagram showing a moving force providing unit;
10 is a main part view showing a guide part and a position fixing part;
11 is a front perspective view showing a discharge frame unit and a hose reel unit;
12 is a main part view showing a hose reel;
13 is a view showing a state in which the crane is suspended in the removal device according to the present embodiment.

An underwater sediment suction pump according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front perspective view of an intake port sediment removal device according to an embodiment of the present invention, FIG. 2 is a rear perspective view of the removal device shown in FIG. 1, FIG. 3 is a side view of the input frame shown in FIG. 1 viewed from the inside, Figure 4 is a view of the transfer unit shown in Figure 1 viewed from the inside of the input frame unit, Figure 5 is a view showing the pump unit shown in Figure 1, Figure 6 is a partial cutaway view of the suction pump shown in Figure 5, Figure 7 is Figure 8 is a view showing a brush included in the pump unit shown in Figure 1, Figure 8 is a view showing a main part showing a post frame and a fixing piece, Figure 9 is a drawing showing a main part showing a moving force providing unit, Figure 10 is showing a guide unit and a position fixing unit Figure 11 is a front perspective view showing the discharge frame portion and the hose reel portion, Figure 12 is a view showing the main portion showing the hose reel portion, Figure 13 is a view showing a state in which the removal device according to this embodiment is suspended crane.

As shown, the intake port deposit removal device according to an embodiment of the present invention includes an input frame unit 100, a transfer unit 200, a pump unit 300, and a moving force providing unit.

The input frame unit 100 can be put into the water through the water intake inlet of the power plant, and approaches the water bottom of the water intake while descending after being put in. The input frame unit 100 corresponds to the shape of the water intake inlet and the area in which sediment is to be removed from the water intake bottom is formed long in the transverse direction, as shown in FIGS. 1 and 2, the longitudinal direction is directed in the transverse direction can be formed to

The structure and shape of the input frame unit 100 are not particularly limited. A plurality of frames in the form of a flat plate may be formed by being connected to each other, or as in the illustrated example, a plurality of frames in the form of a bar may be formed by being connected to each other. As for the overall shape, as in the illustrated example, it may have a shape generally having a rectangular parallelepiped outline, or may be formed to have various other shapes.

An example input frame unit 100 includes a front frame unit 110, a rear frame unit 120 and a side frame unit 130. The front frame part 110 and the rear frame part 120 are each formed in the form of a rectangular frame elongated in the transverse direction, and are arranged in parallel while facing each other while having the same size.

The front frame part 110 and the rear frame part 120 are each of the first frames 111 and 121 disposed to extend horizontally from the upper side and the second frames 112 and 122 disposed in parallel from the lower side, and vertically It includes third frames 113 and 123 having upper ends fixed to the side surfaces of the first frames 111 and 121 and lower ends fixed to the side surfaces of the second frames 112 and 122 by brackets while being arranged to extend. A vertical distance may be maintained between the first frames 111 and 121 and the second frames 112 and 122 by connecting brackets.

The front frame part 110 and the rear frame part 120 are spaced apart from each other in the front and rear direction by a member fixed therebetween, and a space in which parts can be disposed is provided therebetween. The distance between the front frame part 110 and the rear frame part 120 in the front-back direction is maintained by the side frame part 130 as shown in FIG. 3 . The side frame unit 130 may include a fourth frame 134 and a fifth frame 135 disposed in parallel while extending in the front-back direction from the upper and lower sides of the side of the input frame unit 100, and the fourth frame 134 has both ends fixed to the upper ends of the third frames 113 and 123, and the fifth frame 135 has both ends fixed to the lower ends of the third frames 113 and 123.

The transfer unit 200 is coupled to the input frame unit 100 so as to be movable along the longitudinal direction of the input frame unit 100 that is directed in the transverse direction.

The transfer unit 200 may be movably coupled to the input frame unit 100 in various ways or structures such as rail-roller coupling, chain-sprocket wheel coupling, rack and pinion coupling, and the like shown in FIG. 4 in this embodiment. As shown, an example in which the transfer unit 200 is coupled to the input frame unit 100 in a rail-roller coupling method is presented.

Specifically, first, the input frame unit 100 is provided with at least one first rail surface 111a and 121a and at least one second rail surface 111b and 121b so that the transfer unit 200 can be moved while being coupled thereto. do. In this embodiment, while the upper surfaces of the first frames 111 and 121 function as the first rail surface, two first rail surfaces 111a and 121a are provided, and the lower surfaces of the first frames 111 and 121 function as the second rail surface. Two second rail surfaces 111b and 121b are provided while doing so. Both the first rail surfaces 111a and 121a and the second rail surfaces 111b and 121b extend in a transverse direction along the longitudinal direction of the input frame unit 100 .

The transfer unit 200 may include a transfer plate 210 , at least one support bar 221 , an upper roller 231 and a lower roller 232 .

The transfer plate 210 may have, for example, a flat plate shape. A pump unit 300 to be described later is fixed to the transfer plate 210, and the pump unit 300 may be directly fixed to the transfer plate 210 or may be indirectly fixed by interposing other components. In the illustrated example, an example in which the pump unit 300 is indirectly fixed to the transfer plate 210 by the plurality of fixing rods 211 and the suspension plate 212 is presented. The fixing rod 211 is arranged so that its upper end is fixed to the transfer plate 210 and extends downward, and a suspension plate 212 is fixed to the lower end of the fixing rod 211, and the pump unit 300 is attached to the suspension plate 212. ) is fixed.

The support bar 221 may be formed to be disposed in a form extending downward by various fixing methods such as welding on the lower surface of the transfer plate 210, and may be formed as one or multiple. In the illustrated example, four support bars 221 are formed, two of which are spaced apart in the transverse direction while being formed adjacent to the first front frame 111, and the other two are on the first rear frame 121 As they are formed to be adjacent, they are spaced apart in the transverse direction.

The upper roller 231 and the lower roller 232 are rotatably coupled to the support bar 221. Specifically, the upper roller 231 and the lower roller 232 are coupled to the roller shaft fixed while penetrating the support bar 221. ) is rotatably coupled. The upper roller 231 and the lower roller 232 may be coupled to both upper and lower sides of one support bar 221 as in the illustrated example. Alternatively, the upper roller 231 may be coupled to one support bar and the lower roller 232 to the other support bar.

The upper roller 231 is supported downward by being coupled to the support bar 221 so that the lower surface of the upper roller 231 is in contact with the first rail surfaces 111a and 121a, and the lower roller 232 is supported by the support bar. While being coupled to 221, the upper surface of the lower roller 232 is disposed to be in contact with the second rail surfaces 111b and 121b and supported upward. When the conveying plate 210 is provided with an external force to be moved in the lateral direction by a moving force providing unit to be described later, the upper roller 231 and the lower roller 232 are formed on the first rail surfaces 111a and 121a and the second rail surface ( 111b and 121b) while being moved along the first rail surfaces 111a and 121a and the second rail surfaces 111b and 121b, thereby transferring the transfer plate 210 and the pump unit fixed to the transfer plate 210 ( 300) moves in the lateral direction integrally and stably.

An auxiliary bar 222 may be further formed on the lower surface of the transfer plate 210 to stably support the upper roller 231 . The auxiliary bar 222 is disposed in a form extending downward from the lower surface of the transfer plate 210 and is formed at a position facing the support bar 221 . The upper roller 231 is stably supported by fixing both ends of the roller shaft to the support bar 221 and the auxiliary bar 222.

As the transfer unit 200 moves, the pump unit 300 is also moved integrally, so that the pump unit 300 does not impact the inside of the side of the input frame unit 100 when moving, so that the transfer unit 200 moves in the lateral direction The distance is limited and can also be sensed. To this end, as shown in FIGS. 2 and 3, a stopper plate 241 for stopping the movement of the upper roller 231 is disposed at a position where the movement of the upper roller 231 should stop on the first rail surfaces 111a and 121a. It can be. In addition, a sensor 242 for detecting contact of the upper roller 231 with the stopper plate 241 may be provided. When the contact of the upper roller 231 is detected by the sensor 242, the movement of the transfer unit 200 may be stopped by controlling the driving of the motor 443 included in the rotational force providing unit, which will be described later.

The pump unit 300 is fixed to the transfer unit 200 and moves along with the transverse movement of the transfer unit 200 to suck in sediments accumulated on the water bottom of the intake port. Sediment that is sucked in is discharged through a discharge hose that can be connected to one side of the pump unit 300, and the discharge hose can be extended to an external location underwater or outside the water as an intended sediment discharge location.

The pump unit 300 may be applied with various well-known pumps capable of sucking sediments from the bottom of the water. Alternatively, a suction pump developed by the applicant as an undisclosed invention as of the filing date of the present invention (hereinafter referred to as a 'suction pump') may be applied, and the illustrated example suggests an example in which the suction pump is applied as the pump unit 300 .

As shown in FIGS. 5 and 6, the suction pump 300 includes a discharge unit 310, a rotating shaft 320, a driving unit 330, an impeller 340, a suction pipe 350 and a guider 360. includes

The discharge unit 310 has an inlet chamber 315 therein, and the sediment introduced into the inlet chamber 315 is discharged to the outside through the outlet 311, which is one end (upper part based on the drawing) of the suction pump 300. It provides a discharge path to be discharged. A discharge hose (not shown) leading underwater or out of the water may be connected to the outlet 311 .

The discharge unit 310 may include a discharge pipe 312 and an inlet pipe 313 . The discharge pipe 312 and the inlet pipe 313 may be integrally manufactured, or may be manufactured separately as shown and coupled to be fixed to each other. The flange portion 314, which is a mutually coupled portion of the discharge pipe 312 and the inlet pipe 313, is fixed to the above-described suspension plate 212 using a fixing member, and by being fixed in this way, the suction pump 300 is transferred to the transfer plate ( 210) can be fixed.

Meanwhile, FIG. 4 shows a state before the discharge pipe 312 is disposed in the suction pump 300. When the discharge pipe 312 is fixed to the upper portion of the inlet pipe 313 while covering the guider 360 to be described later, the discharge port 311, which is the upper end of the discharge pipe 312, is formed through a through hole 213 formed in the transfer plate 210; 2), it is arranged to slightly protrude upward from the upper surface of the transfer plate 210, and a discharge hose may be connected to the outlet 311.

The inlet pipe 313 has an inlet chamber 315 inside, and a suction pipe 350 to be described later is connected to the side of the inlet pipe 313 so that the sediment sucked through the suction pipe 350 flows into the inlet chamber 315. do. One end of the inlet pipe 313 is connected to the other end (lower end in the illustrated standard) of the discharge pipe 312 so that the internal space of the discharge pipe 312 communicates with the inlet chamber 315 and the other end of the inlet pipe 313 While being sealed, the inlet chamber 315 of the inlet pipe 313 and the inner space of the discharge pipe 312 form a discharge path toward the outlet 311 as a whole. Sediments introduced into the inlet chamber 315 are discharged through the outlet 311 while being pressured along the discharge path.

The suction pump 300 includes a means for forming a pressure condition so that the sediment is pumped along the discharge path, and an example including a rotating shaft 320, an impeller 340, and a driving unit 330 as an example of such a means is presented.

The rotating shaft 320 is disposed to have an axial direction in a direction along the discharge path from the center of the discharge unit 310 . The rotating shaft 320 is connected to the driving unit 330 and rotates by receiving rotational force by the operation of the driving unit 330 . The drive unit 330 is disposed on the axial line of the rotation shaft 320 while being disposed at the lower end of the inlet pipe 313 . The driving unit 330 may be an air motor. The impeller 340 may be fixedly disposed on the rotational shaft 320 at an upper position of the inlet chamber 315 . The impeller 340 is integrally rotated according to the rotation of the rotating shaft 320 to form a pressure condition in the internal space of the discharge unit 310 so that the sediment introduced into the inlet chamber 315 is discharged along the discharge path.

One end of the suction pipe 350 is connected to the side of the inlet pipe 313 and the internal space of the suction pipe 350 communicates with the inlet chamber 315 . Sediments are sucked into the suction pipe 350 through the other end of the suction pipe 350 and introduced into the inflow chamber 315 through the suction pipe 350 . In the illustrated example, two suction pipes 350 are connected to opposite sides of the inlet pipe 313 and are disposed in the transverse direction.

The guider 360 functions to improve the straightness when the sediment is discharged, and is disposed inside the discharge unit 310 and above the impeller 340 . The guider 360 includes a cylindrical guide body 361 and a plurality of vanes 362 extending from the inner surface of the guide body 361 and spaced apart along the circumferential direction.

As described above, the suction pump 300 has a structure in which the impeller 340, the rotating shaft 320, and the driving unit 330 are arranged in a line along the axial direction within the range of the cross-sectional area of the discharge unit 310. Therefore, in the discharge part 310, which is a member forming the discharge path, it can be designed so that the volume occupied in the front-back and left-right directions is not large. In addition, while having a plurality of suction pipes 350, they are connected to both sides of the inlet pipe 313 and are disposed in the transverse direction. Due to this structural feature, the removal device can be designed to minimize the width in the front-rear direction, which is the short side direction of the water intake inlet, while sufficiently securing the suction performance of the suction pump 300. Therefore, even if the water intake structure itself is not changed, a removal device that is easy to put in and use through the existing water intake entrance may be provided.

At the end of the suction pipe 350, a rake portion may be formed to scrape and scatter hardened or aggregated sediments on the bottom of the water to facilitate suction. The rake part may include a rotating body 351 rotatably disposed at the end of the suction pipe 350 and a plurality of rake blades 352 extending in the direction of the sediment from the rotating body 351 and spaced apart in the circumferential direction and fixed. there is. Rotating body 351 may be provided with rotational force by a motor unit 353 that transmits an external force by coupling a chain (not shown) between gears 351a and 353a.

As shown in FIG. 7 , a brush 354 for scattering deposits may be additionally formed at an end of the suction pipe 350 . The brush 354 is formed to extend in the direction of the sediment from the bracket 355 fixed to the side of the rotating body 351, and a plurality of brushes 354 are spaced apart from the rotating body 351 along the circumferential direction. there is. As the rotating body 351 rotates, the rake blade 352 and the brush 354 are integrally rotated together, and the sediment is scraped and scattered in the process of rotation.

The removal device according to the present embodiment has various means such as a means using a rotating screw, a means for spraying a high-pressure fluid, in addition to or together with the above-described rakes and brushes 354 as a means for scattering hardened or clumped deposits. can be used

Meanwhile, as shown in FIGS. 1 and 2 , the input frame unit 100 may additionally have a leg unit 103 extending downward. The above-described pump unit 300 may occupy a position lower in a vertical direction than the second frames 112 and 122 in a state in which it is fixed to the transfer unit 200 . If the input frame unit 100 approaches the bottom of the water excessively, the lower end of the pump unit 300 may be damaged while colliding with the bottom of the water, or it may not perform its function smoothly while being buried deep in the bottom. The leg part 103 is provided to prevent this, and the position of the lower end of the leg part 103 may extend to be lower than the lowermost position of the pump part 300 . Due to the leg part 103, when the input frame part 100 approaches the bottom of the water, the lower part of the leg part 103 first touches the bottom of the water and stops while being supported, so the lower part of the pump part 300 stops at the bottom of the water It is prevented from being bumped into or deeply buried while approaching too much.

The moving force providing unit provides an external force to the transfer unit 200 so that the transfer unit 200 coupled to the input frame unit 100 moves along the longitudinal direction of the input frame unit 100 . Various means may be used for the moving force providing unit depending on the coupling structure of the input frame unit 100 and the transfer unit 200 . In the case of a rack and pinion coupling structure or a chain-sprocket wheel coupling structure, it may be means including a driving source such as a rack gear or a drive motor for rotating a sprocket wheel. Alternatively, in the case of a rail-roller coupling structure as in the present embodiment, it may be a means for directly or indirectly providing an external force to the roller so that the roller rotates.

In the example shown as an example of the moving force providing unit, an external force is provided so as to move the transfer plate 210 in the transverse direction, and an example including a chain 420, a main sprocket wheel 431, and a rotational force providing unit is presented (FIG. 1 and 2, see FIGS. 8 and 9).

More specifically, first, the input frame unit 100 is provided with a post frame 105. The post frame 105 is disposed side by side on the side of each of the left and right third frames 113 on the front side and fixed while the input frame unit ( 100) are arranged to extend upward from both left and right sides and are also arranged to face each other. In addition, fixing pieces 410 are coupled to at least one of the post frames 105 arranged to face each other. In the illustrated example, an example in which the fixing pieces 410 are coupled to each of the post frames 105 is presented.

The chain 420 is arranged to extend in the transverse direction, which is the longitudinal direction of the input frame unit 100, while both ends are fixed to the fixing piece 410 coupled to the post frame 105. Both ends of the chain 420 may be directly connected to the post frame 105 . Alternatively, the chain 420 may have one end fixed to the fixing piece 410 coupled to only one of the post frames 105 and the other end directly connected to the other post frame 105 .

The main sprocket wheel 431 is rotatably coupled to the transfer unit 200 . The transfer unit 200 is provided with a front side fixing plate 213 and a rear side fixing plate 214 which are disposed and fixed to face each other on the upper surface of the transfer plate 210 . The main sprocket wheel 431 is rotatably coupled to the transfer unit 200 while being fixed to a wheel shaft having both ends rotatably coupled to the fixing plates 213 and 214 . The main sprocket wheel 431 is coupled to the chain 420, rotates and moves laterally along the chain 420, and the transfer unit 200 and the pump unit fixed thereto according to the movement of the main sprocket wheel 431 300 is moved integrally in the transverse direction.

As a rotational force providing unit that provides rotational force to the main sprocket wheel 431, an example including a worm wheel 441, a worm shaft 442, and a motor 443 is presented in the illustrated example. The worm wheel 441 is arranged to rotate integrally on the wheel axis of the main sprocket wheel 431, and the worm axis 442 is arranged on the side of the worm wheel 441 so that the worm 444 of the worm axis 442 rotates the worm wheel It is gear-coupled to (441). The motor 443 is connected to an end of the worm shaft 442, and the motor 443 and the worm shaft 442 are supported by being fixed to a mounting bracket 445 fixed to the transfer plate 210. As the motor 443 is driven, the worm shaft 442 is rotated, and the worm wheel 441 is rotated accordingly, and the main sprocket wheel 431 is rotated.

The rotational force providing unit is not limited to the above example. Various driving sources capable of rotating the main sprocket wheel 431 may be applied, and the driving sources may be connected to the main sprocket wheel 431 in various structures and arrangements.

The moving force providing unit maintains the bent shape of the chain 420 coupled to the main sprocket wheel 431 so that the chain 420 is stably coupled to the main sprocket wheel 431 and also the main sprocket wheel 431 An auxiliary sprocket wheel 432 for stably guiding movement along the chain 420 may be further included. The auxiliary sprocket wheel 432 is spaced apart from the main sprocket wheel 431 in the lateral direction and coupled to the chain 420 while being rotatably coupled to the front fixing plate 213 . In this case, as shown, the main sprocket wheel 431 may be coupled upward from the lower side of the chain 420, and the auxiliary sprocket wheel 432 may be coupled downward from the upper side of the chain 420.

Meanwhile, the chain ( 420) is preferably arranged to be somewhat elastically moved in the lateral direction rather than being statically arranged. To this end, at least one of the fixing pieces 410 to which both ends of the chain 420 are fixed may be coupled to elastically move away from or approach the post frame 105 in the transverse direction.

Specifically, as shown in FIG. 8 , at least one moving pin 411 may be coupled through the post frame 105 in a direction parallel to the longitudinal direction of the chain 420 . A fixing piece 410 is fixed to one end of the moving pin 411 protruding from the post frame 105 toward the chain 420 . In addition, a locking piece 412 is formed at an end of the moving pin 411 protruding in the opposite direction from the post frame 105, and is attached to the moving pin 411 between the locking piece 412 and the side of the post frame 105. Spring 413 is coupled. Since the fixing piece 410 is fixed to the end of the moving pin 411 coupled to the post frame 105 so as to be elastically moved in the lateral direction by the spring 413, the fixing piece 410 can be elastically moved in the lateral direction. The chain 420 fixed to the fixing piece 410 can also be moved elastically in the transverse direction, whereby the main sprocket wheel 431 is stably supported by the chain 420 during rotation and the chain 420 can be moved along

The arrangement of the fixing piece 410 and the chain 420 is not limited to the above example, and may be disposed on the lower side or inside of the input frame unit 100 instead of the upper side, and the fixing piece 410 is placed on the input frame unit 100. ) may be bonded to other parts of

The intake port deposit removal device according to the present embodiment may further include a guide portion 500 that allows the input frame unit 100 to descend while being guided along a guide rail (not shown) formed on a wall surface of the intake port when the input frame unit 100 is lowered toward the bottom of the intake port. can

The input frame part 100 is provided with a side frame forming a side part to which parts such as the guide part 500 can be fixed. As an example of the side frame, an example of the first support frame 151 shown in FIG. 3 may be presented. The first support frame 151 is made of a pair, each having a 'c' shape, the upper end is fixed to the fourth frame 134 and the lower end to the fifth frame 135, and is symmetrical to the left and right. are placed

As shown in FIG. 10 , the guide unit 500 may include a pair of support plates 510 and at least one guide roller 520 coupled thereto. The support plate 510 may be in the form of a flat plate and is made of a pair. The pair of support plates 510 are disposed to face each other in the front and rear directions while being fixed to the pair of first support frames 151, respectively. The guide roller 520 is rotatably coupled by a roller shaft fixed to the support plate 510 while being disposed between the pair of support plates 510 . At least one guide roller 520 may be disposed, and in the illustrated example, two guide rollers 520 spaced apart in the vertical direction are disposed. Since the guide roller 520 moves along the guide rail while being coupled to the guide rail formed on the wall of the water intake port, the input frame unit 100 can move stably while being guided when descending.

The intake port deposit removal device according to the present embodiment may further include a position fixing unit 600 for fixing the position of the input frame unit 100 while pressing a wall surface of the intake port.

The input frame unit 100 is provided with a side frame forming a side to which the position fixing unit 600 can be fixed, and examples of the second support frame 152 shown in FIGS. 3 and 10 can be presented as an example. there is. The second support frame 152 is made of a pair, and each has a 'b' shape, and one side portion 153 is directly or indirectly with the support plate 510 interposed as shown in the first support frame. (151) is fixed. In this fixed state, the other side portion 154 forming a right angle to one side portion 153 of the second support frame 152 is disposed to face the side of the input frame portion 100.

As shown in FIG. 10 , the position fixing unit 600 may include a fluid pressure cylinder 610 and a pressure plate 620 . The fluid pressure cylinder 610 is penetrated and fixed to the other side 154 of the second support frame 152, and in this fixed state, the piston rod 611 of the fluid pressure cylinder 610 is the fluid pressure cylinder 610 Depending on the operation of the water intake, it is withdrawn in the direction toward the wall surface or drawn in the opposite direction. The pressure plate 620 is formed at an end of the piston rod 611 and presses the water intake port wall as the piston rod 611 is drawn out. The position fixing unit 600 may be disposed on only one side of the input frame unit 100 or on both sides. In addition, only one disposed on the side of the input frame unit 100, or a pair disposed spaced apart in the front-rear direction as in the illustrated example. When the pressure plate 620 presses the water intake wall surface while the piston rod 611 is drawn out according to the operation of the fluid pressure cylinder 610, the input frame unit 100 can be stably fixed in place by the pressurized force.

As shown in FIGS. 11 and 12, the intake port deposit removal device according to the present embodiment may further include a hose reel unit 900 and a discharge frame unit 700 to which the hose reel unit 900 is rotatably coupled. can

The discharge frame unit 700 includes, for example, a front frame unit 710, a rear frame unit 720, and a side frame unit 730 like the input frame unit 100, and can be introduced through a water intake inlet. made up of

The discharge frame unit 700 is coupled to the input frame unit 100 and detachably mounted on the upper side of the input frame unit 100 . As an example of the separate mounting structure, the input frame unit 100 is provided with a first coupling frame 101 as shown in FIG. 1 . The first coupling frame 101 is disposed side by side on the side of the third frames 113 and 123 as four corners of the input frame unit 100, is fixed, and extends upward. The aforementioned post frame 105 may also function as the first combined frame 101 . An upper end of the first coupling frame 101 is formed with a coupling portion 102 whose cross-sectional area is reduced in an upward direction.

The discharge frame unit 700 is provided with a second coupling frame 701 extending downward from a position opposite to the first coupling frame 101 . The inside of the lower end of the second coupling frame 701 is formed with a space portion opened downward. Therefore, while the input frame unit 100 moves upward, the coupling unit 102 of the first coupling frame 101 can be inserted into the space at the lower end of the second coupling frame 701 and coupled thereto. When the first coupling frame 101 and the second coupling frame 701 are coupled to each other, the discharge frame unit 700 is supported downward by the input frame unit 100 while being disposed above the input frame unit 100. .

The hose reel unit 900 includes a rotating shaft unit 910 provided at the center, and is formed so that a discharge hose connected to the pump unit 300 can be wound or unwound. In the hose reel unit 900, the rotating shaft unit 910 is rotatably coupled to the discharge frame unit 700, and the discharge hose is wound or unwound according to rotation. The rotating shaft portion 910 includes one end of the rotating shaft portion 910 on the shaft support portion 712 formed on the upper surface of the shaft support bracket 711 fixed to the inner surface of the front frame portion 710 and the rear frame portion 720. The other end of the rotary shaft unit 910 is rotatably coupled to the rear side shaft support unit 722 formed on the upper surface. At this time, the hose reel part 900 is coupled with a spring spring (not shown) so that elastic force by the spring spring can be applied to rotation.

The hose reel unit 900 includes a pair of disks 920 in a circular shape arranged to face each other while being spaced apart and fixed on the rotating shaft unit 910 to wind and support the discharge hose and to maintain the wound state, and both ends It may include a plurality of support pins 930 fixed to the inside of both disks and spaced apart from each other along the circumferential direction.

The discharge hose, one end of which is connected to one side of the pump unit 300, may have its other end connected to the rotation shaft unit 910, and the rotation shaft unit 910 has an inlet 911 to which the discharge hose can be connected to one side in the lateral direction. It is formed to protrude into. A discharge path for deposits is provided inside the rotation shaft unit 910. Specifically, the interior consists of a space in which the other end is closed and one end is open, and a discharge port 912 is formed at one end of the rotation shaft unit 910. The inlet 911 is formed so that the external space communicates with the internal space of the rotating shaft 910 through the inlet 911 . Therefore, when both ends of the discharge hose are connected to the pump unit 300 and the inlet 911, and the sediment is discharged through the discharge hose by the pump unit 300, the sediment flows into the inlet 911 and then the rotating shaft unit 910 ) It can be discharged through the outlet 912 formed at one end while passing through the inner space. The discharge port 912 may be the final discharge location of the sediment, or a discharge pipe (not shown) may be additionally connected to the discharge port 912 to provide a discharge path to the final discharge location.

When the discharge frame unit 700 is introduced to the vicinity of the surface of the water through the water intake inlet, the input frame unit is placed on the side of the discharge frame unit 700 so as to be moved stably while being guided along the guide rail on the water intake wall, similar to the input frame unit 100. The guide part 800 having the same structure as the guide part 500 of (100) may be fixed.

The discharge frame unit 700 may be located near the surface of the water without being put into the depths of the water. For this purpose, a buoy (not shown) may be fixed to the discharge frame unit 700 . Alternatively, an additional fixing means for fixing the discharge frame part 700 to the water intake wall surface or limiting further descent may be used and positioned near the water surface.

Meanwhile, as shown in FIG. 13, the input frame unit 100 and the discharge frame unit 700 may be suspended on a single crane 10 and operated to be transported and put in integrally. The input frame unit 100 may have chain rollers 104 (see FIGS. 1, 2 and 10) to which the crane chain 11 is connected on the upper side of both side portions. In addition, support rollers 702 (see FIG. 11) capable of supporting the crane chain 11 may be formed on upper and lower sides of the discharge frame unit 700.

The crane chain 11 is supported by the support roller 702 of the discharge frame unit 700 and extends to the chain roller 104 of the input frame unit 100 and is connected to the chain roller 104 . When the chain 11 is shortened by the operation of the crane 10, the input frame unit 100 is moved upward, and the discharge frame unit 700 coupled to the upper side of the input frame unit 100 can also be moved upward together integrally. .

As described above, the input frame unit 100 and the discharge frame unit 700 lifted upward may be moved to a position facing the water intake inlet downward as the crane 10 moves. After that, when the crane chain 11 is extended, the discharge frame unit 700 and the input frame unit 100 are lowered together to approach the water surface through the water intake inlet. At this time, it can stably descend while being guided along the guide rail by the guide parts 500 and 800 .

The discharge frame unit 700 reaches the water surface and is fixed in position near the water surface by a buoy or additional fixing means, and the first coupling frame 101 of the input frame unit 100 is fixed according to the continued extension of the crane chain 11. While being separated from the second coupling frame 701 of the discharge frame unit 700, the input frame unit 100 may continue to descend and reach the bottom of the water intake port. In this process, the hose reel unit 900 is rotated in a direction to overcome the elastic force of the main spring, and the discharge hose is released accordingly.

When the input frame unit 100 approaches the bottom of the water and reaches the intended position, the position fixing unit 600 operates to fix the position of the input frame unit 100, and the transfer unit 200 moves under the control of the moving force providing unit. While moving in the lateral direction, while the pump unit 300 is controlled to operate, the sediment on the bottom of the water is scattered to facilitate suction, and at the same time, it can be sucked in and discharged through the discharge port 912 through the discharge hose.

In the intake port sediment removal device according to the present embodiment, a sensor for position detection and an underwater camera are additionally mounted on the input frame unit 100 so as to check the underwater position of the input frame unit 100 and the state of the underwater bottom. can

In the suction pump according to the present embodiment, since the control for the operation of the above-described components is performed by an operator outside the water surface, the sediment at the bottom of the water is safely and quickly suctioned and removed without introducing a diver. can do.

100: input frame unit
105: post frame 110: front frame
120: rear frame portion 130: side frame portion
111a, 121a: first rail surface 112a, 122a: second rail surface
200: transfer unit
210: transfer plate 221: support bar
231: upper roller 232: lower roller
300: pump unit
310: discharge unit 311: discharge port
312: discharge pipe 313: inlet pipe
315: inflow chamber 320: rotation shaft
330: driving unit 340: impeller
350: suction pipe 351: rotating body
352: rake blade 354: brush
360: guider 361: guide body
362: vane
410: fixing piece 420: chain
431: main sprocket wheel 432: auxiliary sprocket wheel
441: worm wheel 442: worm shaft
443: motor
500: guide unit
510: support plate 520: guide roller
600: position fixing unit
610: fluid pressure cylinder 611: piston rod
620: pressure plate
700: discharge frame unit
701: second coupling frame 710: front frame portion
720: rear frame portion 730: side frame portion
800: guide unit
900: hose reel
910: rotating shaft 911: inlet
912: outlet 920: disk
930: support pin

Claims (6)

An input frame unit 100 that can be put into water through the water intake inlet of the power plant;
a transfer unit 200 coupled to the input frame unit 100 so as to be movable along the longitudinal direction of the input frame unit 100;
A pump unit 300 that is fixed to the transfer unit 200 and moves together with the transfer unit 200, sucks in sediments accumulated on the bottom of the water intake and discharges them through a discharge hose that can be connected to one side;
a moving force providing unit that provides an external force to the transfer unit 200 so that the transfer unit 200 moves along the longitudinal direction; and
The fluid pressure cylinder 610 in which the piston rod 611 is drawn in the direction toward the water intake wall surface or drawn in the opposite direction while being fixed to the side of the input frame unit 100, and the end of the piston rod 611 Including a pressure plate 620 formed on the intake port to press the wall surface of the intake port according to the withdrawal of the piston rod 611, the pressure plate 620 presses the intake port wall surface according to the withdrawal of the piston rod 611, A position fixing unit 600 for fixing the position of the input frame unit 100
Water intake sediment removal device comprising a. According to claim 1,
The input frame unit 100 includes at least one first rail surface 111a and 121a formed to be movable in the longitudinal direction while the lower surface of the upper roller 231 is in contact with the lower roller 232. At least one second rail surface (111b, 121b) formed to be movable in the longitudinal direction while the upper surface is in contact is provided,
The transfer unit 200 includes a transfer plate 210 to which the pump unit 300 is fixed, at least one support bar 221 formed on the transfer plate 210, and rotation on the support bar 221. The upper roller 231 is rotatably coupled to the first rail surfaces 111a and 121a, and the upper roller 231 is rotatably coupled to the support bar 221 and the second rail surfaces 111b and 121b ) Intake port deposit removal device including the lower roller 232 disposed to contact the upper surface. According to claim 1,
It further includes a guide part 500 fixed to the side of the input frame part 100 so that the input frame part 100 descends while being guided along the guide rail formed on the water intake wall surface when the input frame part 100 descends toward the bottom of the water intake port. ,
The guide part 500 is fixed to the side of the input frame part 100 while being disposed between a pair of support plates 510 arranged to face each other and the pair of support plates 510. An intake port deposit removal device including at least one guide roller 520 rotatably coupled to the support plate 510 and coupled to a guide rail on a water intake wall surface to be guided along the guide rail and movable. According to claim 1,
The moving force providing unit,
A chain 420 having both ends connected to the input frame unit 100 and extending in the longitudinal direction, while being rotatably coupled to the transfer unit 200 and being coupled to the chain 420 and being rotated, the chain ( A water intake port deposit removal device comprising a main sprocket wheel 431 moving along 420 and a rotational force providing unit providing an external force to rotate the main sprocket wheel 431. According to claim 1,
An output frame unit 700 coupled to the input frame unit 100 to be detachably mounted on the upper side of the input frame unit 100; and
The rotating shaft portion 910 provided at the center is rotatably coupled to the discharge frame portion 700 to further include a hose reel portion 900 formed so that the discharge hose can be wound or unwound according to rotation,
The rotary shaft part 910 has one side to which the discharge hose can be connected, and a water intake providing a discharge path through which the sediment discharged through the discharge hose can be discharged to the outside through the end of the rotary shaft part 910. sediment removal device. delete

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