KR101167694B1 - Bell mouth and liquid suction device having the same - Google Patents

Abstract

A bell mouse and a fluid suction device for a ship having the same are disclosed. Bell mouse according to an embodiment of the present invention, the fluid suction duct is connected to the pipe (pipe) through which the fluid is discharged, the suction port is formed in one end of the fluid; And at least one strength reinforcing member for reinforcing the fluid suction duct while being provided in the suction port area of the fluid suction duct to partition the suction port area into a plurality of unit suction areas.

Description

Bell mouth and liquid suction device of ship having same {Bell mouth and liquid suction device having the same}

The present invention relates to a device for sucking fluid in a ship, and more particularly, to a bell mouth having an improved structure for fluid suction and a ship's fluid suction device having the same.

In the case of large ships, ballast tanks are provided to maintain balance or to maintain a constant draft of the ship depending on whether or not cargo is loaded.

If there is little or no cargo in such ballast tanks, ballast water, corresponding to seawater, is introduced to balance the vessel.

Depending on the ship's capacity, the ballast tanks are repeatedly flowed in and out of ballast tanks, from as low as thousands of tons to as high as tens of thousands of tons. This ballast water inflow and outflow process is dependent on the ballast water treatment system that is commonly applied to large ships.

On the other hand, when the ballast water in the ballast tank is to be discharged to the sea, a bell mouth is used as a means for aspirating fluid close to the ballast water (hereinafter referred to as a fluid) in the ballast tank. .

The bell mouse is coupled to the end region of the pipe that is attached to the ballast water treatment system and used for initial suction of the fluid. The bell mouse is positioned along the longitudinal direction in the ballast tank and positioned slightly spaced upwardly from the bottom surface of the ballast tank between the septum plates which prevents the flow of fluid to initially inhale the fluid.

In applying such a bell mouse, as many bell mice as possible can be arranged and used to improve the suction efficiency of the fluid. However, considering that the bell mouse is not used alone but in connection with the piping of the ballast water treatment system, the application of a large number of bell mice is costly and the space in which the bell mouse is placed is limited. This is somewhat burdensome in reality.

In particular, considering that the space in which the bell mouse is placed is somewhat limited, it is expected that the efficiency of the suction of the fluid may be improved by using the bell mouse of the largest size expected per unit area.

However, in the case of simply making a large size of the bell mouse, the vortex phenomenon may occur when the fluid is sucked, and the suction efficiency of the fluid may be lowered, and the bell mouse is deformed (deformed) during the fluid suction. And the like, as well as damage to the paint of the bell mouse or the hull around it, it is necessary to develop a new structure in consideration of this point.

Therefore, the technical problem to be achieved by the present invention is to minimize the occurrence of the vortex (vortex) phenomenon can not only improve the suction efficiency of the fluid than conventional, but also to prevent the deformation of the bell mouse, furthermore, the bell mouse Another object of the present invention is to provide a bell mouse and a fluid suction device of a ship having the same, which can reduce the occurrence of paint damage in the hull area where the bell mouse is installed.

According to an aspect of the invention, the fluid suction duct is connected to the pipe (pipe) through which the fluid is discharged, the suction port is formed at one end of the fluid is sucked; And at least one suction reinforcement member provided in the suction port area of the fluid suction duct to reinforce the strength of the fluid suction duct while partitioning the suction port area into a plurality of unit suction areas. .

Both ends of the suction reinforcing portion reinforcing member may be fixed at different positions on the circumferential surface of the suction port so as to be disposed in a direction crossing the suction port at any one position of the suction port, and a plurality of the reinforcement members may be arranged to cross each other.

The suction reinforcing portion reinforcing member may have at least one guide surface for guiding the flow of the fluid flowing toward the pipe.

The guide surface may be provided symmetrically with respect to the central axis of the strength reinforcing member for the suction port compartment.

The tip portion of the guide surface may be formed sharply in the direction in which the fluid is sucked.

The fluid suction duct may be disposed between a pair of partition wall plates in a ballast tank, and the suction port may have an elliptical cross-sectional shape that is formed long along a length direction of the partition plate.

The fluid suction duct may have a funnel structure that gradually decreases in volume along the direction in which the fluid is sucked from the suction port, and is detachable from an end region of the fluid suction duct facing the fixing flange of the pipe side. Joining flanges can be further formed to be coupled.

According to another aspect of the invention, the tank is filled with a fluid; At least a pair of partition plate plates disposed in the tank along the length direction; And a bell mouse disposed between the pair of partition wall plates to suck the fluid in the tank, wherein the bell mouse is connected to a pipe through which the fluid is discharged, and the fluid is sucked at one end thereof. A fluid suction duct in which a suction port is formed; And at least one suction reinforcement member provided in the suction port area of the fluid suction duct to reinforce the strength of the fluid suction duct while partitioning the suction port area into a plurality of unit suction areas. Can be.

Both ends of the bell mouth may be fixed at different positions on the circumferential surface of the suction port such that the strength reinforcing member for the suction port compartment of the bell mouse is disposed in a direction crossing the suction port at one position of the suction port. Can be.

The suction reinforcing portion reinforcing member of the bell mouth may have at least one guide surface for guiding the flow of the fluid flowing toward the pipe.

The guide surface may be provided symmetrically with respect to the central axis of the strength reinforcing member for the inlet compartment, the leading end of the guide surface may be formed sharply in the direction in which the fluid is sucked.

The suction port may have an elliptical cross-sectional shape that is elongated along the longitudinal direction of the partition plate.

The tank may be a ballast tank in which the ballast number as the fluid is filled therein to balance the ship.

Embodiments of the present invention, by minimizing the occurrence of vortex (phentex) phenomenon can improve the suction efficiency of the fluid than the conventional as well as can prevent the deformation occurs in the bell mouse, furthermore bell mouse or bell mouse It is possible to reduce the occurrence of paint damage in the hull area in which is installed.

1 is a schematic structural diagram of a ballast water treatment system to which a bell mouse is applied according to an embodiment of the present invention.
FIG. 2 is a partially enlarged view of the ballast tank area in which the bell mouse is disposed in FIG. 1; FIG.
FIG. 3 is an enlarged view of region A of FIG. 2.
4 is a schematic bottom view of the region A of FIG. 2.
5 to 7 are front perspective, rear perspective and side views of the bell mouse, respectively.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 is a schematic structural diagram of a ballast water treatment system to which a bell mouse is applied according to an embodiment of the present invention.

The ballast water treatment system to which the bell mouse 100 of the present embodiment is applied will be briefly described with reference to this drawing. The ballast water treatment system includes a plurality of double bottom water ballast tanks (11, DB.WBTK) arranged horizontally on the bottom of the ship, and a plurality of side ballast tanks arranged vertically on the inner wall of the hull. 12).

The arrangement structure and the number of the double bottom ballast tanks 11 and the side ballast tanks 12 may be sufficiently varied depending on the volume of the ship.

The ballast water treatment system is provided with a plurality of pumps 13 for supplying or discharging ballast water (hereinafter, fluid) to the ballast tanks 11 and 12. The pumps 13 may be correspondingly applied to each ballast tank 11 and 12 one by one, or may be applied to several ballast tanks 11 and 12 in common.

The pumps 13 are attached to a so-called piping system 20, which is woven with a plurality of pipes 21, and a plurality of pipes 21 have a plurality of on / off lines for the line. The valve V is provided.

FIG. 2 is a partially enlarged view of the ballast tank area in which the bell mouse is disposed in FIG. 1; FIG.

Referring to this figure, as described above, a double bottom ballast tank 11 and a side ballast tank 12 are provided on one side of the ship.

The side ballast tank 12 is provided with an air discharge portion 14 for discharging air that is excessively filled in the side ballast tank 12 to the outside.

In addition, the air discharge part 14 is provided with a fluid overflow discharge part 15 for discharging the fluid (ballast water) excessively filled in the side ballast tank 12 to the outside.

The non-return valve 16 is installed at the fluid overflow outlet 15. The non-return valve 16 is a valve that prevents backflow of fluid.

Of course, the air outlet 14, the fluid overflow outlet 15, and the non-return valve 16 are not provided only in the silk side ballast tank 12, but are also provided in the double bottom ballast tank 11. For convenience, the configuration of the double bottom ballast tank 11 side is not shown.

3 is an enlarged view of region A of FIG. 2, with reference to FIGS. 2 and 3, when inhaling fluid (ballast water) in a double bottom ballast tank 11 (hereinafter simply referred to as ballast tank), or as described above. As described above, when the fluid overflow process is performed, the fluid is sucked through the bell mouth 100 to be described later.

In this case, the suction efficiency of the fluid through the bell mouse 100 may be an important factor. As emphasized above, in the case of simply making and using only the size of the bell mouse 100, the vortex during the suction of the fluid is used. Phenomena may occur, rather, the suction efficiency of the fluid may be lowered, and deformation (deformation, etc.) may occur in the bell mouse 100 during the suction process of the fluid, as well as the Damage to the paint can occur.

 Therefore, a new and improved structure is required, which is solved by the vessel's fluid suction device (not shown) having the bell mouse 100 and the bell mouse 100 of the present embodiment.

The fluid suction device of the ship according to the present embodiment, as shown in Figures 2 and 3, the ballast tank 11 is filled with the fluid for the balance of the vessel, and the longitudinal direction in the ballast tank (11) That is, the bell mouse 100 disposed between the at least one pair of partition plate 140 and the pair of partition plate 140 disposed long along the bow and bow direction of the ship to suck the fluid in the ballast tank 11. It includes.

The ballast tank 11 is replaced by the description above with respect to FIGS. 1 and 2. 1 and 2, the reference numeral 11 has been described as a double bottom ballast tank, but since the fluid suction device of the ship of the present embodiment can be installed in the side ballast tank 12, from the description here, the ballast tank Do not distinguish the positions of (11).

FIG. 4 is a schematic bottom structure diagram of region A of FIG. 2, and referring to FIGS. 3 and 4 together, the pair of partition plate 140 is a metal plate structure disposed in the ballast tank 11.

The partition plate 140 is disposed in the ballast tank 11 in the longitudinal direction of the ballast tank 11, that is, along the bow and the bow direction of the ship, to prevent the fluid in the ballast tank 11 from running out of the bell mouth 100. Provides space for installation.

In the drawings, the upper end of the partition plate 140 is bent in the same direction, which is one example only, the shape of the partition plate 140 need not be limited to the drawing. Holes 140a (holes) for the flow of ballast water are formed in the lower end region of the partition plate 140, and a reinforcement plate 145 for reinforcing the bottom surface of the hull is provided on the bottom surface of the hull between the partition plate 140. do.

Although depending on the vessel, when the length of the partition plate 140 is, for example, a few to several tens of meters (m) or more, a plurality of bell mice 100 are disposed therebetween to suck the fluid at that location.

At this time, since the bell mice 100 are not closely arranged in terms of cost or system structure, the bell mice 100 may be placed along the length direction of the partition plates 140 between the pair of partition plates 140. Will be deployed.

Given that the space in which the bell mouse 100 is disposed (installed) is somewhat limited, making and using the bell mouse 100 of the largest size that can be expected per unit area may improve the suction efficiency of the fluid. It will be predictable enough.

However, in the case of simply making and using only the size of the bell mouse 100, various problems as described above are expected. In this embodiment, the bell mouse 100 having the structural features of FIGS. It is.

5 to 7 are front perspective, rear perspective and side views of the bell mouse, respectively.

Referring to these drawings and FIG. 4 together, the bell mouse 100 of the present embodiment is connected to a pipe 21 through which fluid is discharged, and a fluid suction duct 110 having an inlet 111 through which a fluid is sucked is formed at one end thereof. And a suction inlet compartment for reinforcing the strength of the fluid suction duct 110 while partitioning the suction port 111 into a plurality of unit suction regions 111a of the fluid suction duct 110. Member 120.

The fluid suction duct 110 sucks the fluid in a state where the fluid suction duct 110 is not in contact with the bottom region of the ballast tank 11, that is, spaced upward from the bottom of the ballast tank 11. Of course, the suction power of the fluid can be provided in the pump 13 described in FIG. 1.

The fluid suction duct 110 is manufactured to have a funnel structure in which its volume is gradually narrowed along the direction in which the fluid is sucked from the inlet 111 so that the fluid can be initially sucked through the fluid suction duct 110. .

Since most pipes 21 have a circular cross section, in order for the pipe 21 and the fluid suction duct 110 to be connected, the fluid suction duct 110 at the portion connected to the pipe 21 has a circular cross-sectional shape. Should have That is, the size of the suction port 111 is formed to be as large as possible, but the portion connected to the pipe 21 must have a circular cross-sectional shape, so the fluid suction duct 110 is not a fully symmetric funnel structure, but a funnel having the same meaning as the drawing. You have a structure.

In the end region of the fluid suction duct 110, a coupling flange 112 is formed to be detachably coupled to the fixing flange 22 toward the pipe 21. The coupling flange 112 is formed with a plurality of through holes 112a for bolt assembly.

If the fluid suction duct 110 is small, it may be manufactured through an injection mold or a press sheet metal. However, when applied to large ships, it is not possible to manufacture by the above method, so the steel plate is manufactured by welding the connection part by rolling the part. Side lines shown in FIGS. 5 and 7 may be referred to as a welding site (W).

On the other hand, the suction port 111 is formed at the end of the fluid suction duct 110, the first fluid is sucked is formed in a non-circular cross-sectional shape, that is, long along the longitudinal direction of the partition plate 140 as shown in FIG. Oval cross-sectional shape.

The reason why the inlet 111 has an elliptical cross-sectional shape is that, as will be described repeatedly, the space where the bell mouse 100 of the present embodiment is arranged (installed), that is, the space between the pair of partition plates 140 is somewhat limited. This is because the space must have the largest size that can be expected per unit area.

In other words, rather than manufacturing the inlet 111 in a circular, square or triangular cross-sectional shape as shown in Figure 4 to produce an inlet 111 to have an elliptical cross-sectional shape formed long along the longitudinal direction of the partition plate 140 In this case, the inlet through which the fluid is sucked is wide, which increases the suction efficiency of the fluid.

On the other hand, the suction inlet partition strength reinforcing member 120 is provided in the suction port 111 region of the fluid suction duct 110 while partitioning the suction port 111 area into a plurality of unit suction area (111a) fluid suction duct 110 It serves to reinforce the strength of.

In other words, as shown in Figure 6, the strength reinforcing member 120 for the inlet compartment may be installed to cross three, in this case, one inlet 111 is divided into a total of six unit suction area (111a) Therefore, the vortex phenomena due to the collision of the fluid sucked in six directions is much less than before. Therefore, the suction efficiency of the fluid is increased.

Since the vortex generation is reduced as described above, the inner surface or the outer surface of the fluid suction duct 110 or the paint damage of the spherical structure may be reduced as the fluid collides with the surroundings.

In addition, although the embodiment is provided with the structure of FIG. 6, when the inlet compartment strength reinforcing member 120 is provided, the inlet compartment strength reinforcing member 120 crosses the inlet 111 at any position of the inlet 111. Since both ends are fixed at different positions on the circumferential surface of the inlet 111 while being disposed in a direction, deformation of the fluid suction duct 110, that is, distortion, which may be caused in the process of inhaling the fluid, may be prevented. Strength reinforcing member 120 for the inlet compartment may be welded or bolted in the corresponding position.

As a result, the strength reinforcing member 120 for the suction port compartment provided in the fluid suction duct 110 simultaneously serves to prevent deformation of the fluid suction duct 110 while preventing the generation of vortices when the fluid is suctioned. will be.

Looking at the inlet compartment strength reinforcing member 120 in more detail, the inlet compartment strength reinforcing member 120, as shown in Figure 7, the flow of fluid flowing toward the pipe (21) enlarged part arrow And a guide surface 121 for guiding the same).

At this time, the guide surface 121 is provided symmetrically with respect to the central axis of the strength reinforcing member 120 for the inlet compartment. Therefore, the tip portion of the guide surface 121 is formed sharply in the direction in which the fluid is sucked. Of course, the ends need not be pointed as shown, and may be chamfered as needed.

In consideration of this point, the inlet partition strength reinforcing member 120 may be applied by bending a rectangular iron plate along a center line in the longitudinal direction thereof.

Of course, this is only one example, and may be a strength reinforcing member (not shown) for a suction port partition having no bent portion, that is, a simple bar or bar type.

In the present embodiment, the inlet inlet partition strength reinforcing member 120 intersects two short ones and one long one so that one inlet 111 is divided into six unit suction areas 111a. Such matters should not limit the scope of the present embodiment. For example, the number of suction reinforcement members 120 may be appropriately adjusted.

In addition, the area of the unit suction area 111a formed by the strength reinforcing members 120 for the inlet compartment may also be adjusted differently. In the drawings, the same reference numerals are given to the strength reinforcing member 120 for the inlet compartment regardless of its length for convenience.

When the bell mouth 100 having such a structure is coupled to the pipe 21 as shown in FIGS. 2 and 3 and installed in the ballast tank 11 to discharge the ballast water, which is a fluid, the suction port 111 of the fluid suction duct 110 is provided. The fluid initially sucked through) is introduced into the unit suction regions 111a and is sucked and flows while being guided along the guide surface 121 of the strength reinforcing member 120 for the inlet compartment. Vortex phenomenon This can be minimized to improve the suction efficiency of the fluid than conventional. In particular, as the area in contact with the fluid of the unit suction areas 111a is increased without generating a vortex phenomenon, the suction efficiency can be significantly improved than in the related art.

In addition, since the fluid can be smoothly sucked and flowed without vortex, deformation can be prevented from occurring in the bell mouse 100, and furthermore, in the hull area in which the bell mouse 100 or the bell mouse 100 are installed. It is possible to reduce the occurrence of paint damage.

Although the present embodiment has been described in detail with reference to the drawings, the scope of the present invention is not limited to the above-described drawings and descriptions.

For example, in the case of the suction reinforcing section reinforcing member 120, not only has a cross-shaped arrangement structure, unlike in Figure 4 may be coupled to be in the opposite direction to the above-described embodiment. In addition, the inlet 111 of the fluid suction duct 110 may have a substantially rectangular cross-sectional shape unlike the above-described embodiment. Of course, the suction port 111 of the fluid suction duct 110 may have a circular cross-sectional shape. Even if these various embodiments are applied, it is possible to minimize the occurrence of the vortex phenomenon to improve the suction efficiency of the fluid, it is possible to prevent the deformation occurs in the bell mouse 100, the bell mouse 100 or the bell mouse 100 Is sufficient to reduce the occurrence of paint damage in the hull area in which is installed.

Meanwhile, in the above-described embodiments, the fluid is described as a ballast water, but the fluid does not necessarily have to be a ballast water, and the fluid to be inhaled may be air, sea water, fresh water, or liquid cargo.

That is, the bell mouse 100 may be provided in a cargo oil tank (CARGO OIL TANK) of a crude oil tanker (COT) and may also be used to inhale oil (OIL). In particular, when the bell mouse is used to inhale oil, it may be advantageous to be applied to a place where the viscosity of the oil is not high and the oil intake amount is large, but it is not necessarily so.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

21: Plumbing 100: Bell Mouse
110: fluid suction duct 111: suction port
111a: unit suction area 112: coupling flange
120: strength reinforcing member for the inlet compartment 121: guide surface
140: partition plate

Claims (13)

A fluid suction duct connected to a pipe through which the fluid is discharged and having a suction port formed at one end of the fluid suction port; And
And at least one suction reinforcement member provided in the suction port area of the fluid suction duct to reinforce the strength of the fluid suction duct while partitioning the suction port area into a plurality of unit suction areas. The method of claim 1,
The suction port partition strength reinforcing member, the bell mouse is fixed at both ends of the suction port in a position different from the circumferential surface of the suction port so as to be disposed in a direction crossing the suction port at any one position of the suction port, a plurality of cross. The method of claim 1,
The bell mouth having at least one guide surface for guiding the flow of the fluid flowing to the pipe in the strength reinforcing member for the inlet compartment. The method of claim 3,
The guide surface of the bell mouse is provided symmetrically with respect to the central axis of the strength reinforcing member for the inlet compartment. The method of claim 3,
Bell end of the guide surface is formed in a sharp sharply along the direction in which the fluid is sucked. The method of claim 1,
The fluid suction duct is disposed between a pair of partition wall plates in the ballast tank,
The suction port is a bell mouse having an elliptical cross-sectional shape formed long along the longitudinal direction of the partition plate. The method of claim 1,
The fluid suction duct has a funnel structure that gradually decreases in volume along the direction in which the fluid is sucked from the suction port side.
And a coupling flange formed at an end region of the fluid suction duct so as to be detachably coupled to face a fixed flange of the pipe side. A tank filled with fluid therein;
At least a pair of partition plate plates disposed in the tank along the length direction; And
A bell mouse disposed between the pair of partition plates to suck fluid in the tank,
The bell mouse,
A fluid suction duct connected to a pipe through which the fluid is discharged and having a suction port formed at one end thereof to suck the fluid; And
And at least one strength reinforcing member for reinforcing the strength of the fluid suction duct while partitioning the suction port region into a plurality of unit suction regions. The method of claim 8,
The strength reinforcing member for the suction port compartment of the bell mouse, both ends are fixed at different positions on the circumferential surface of the suction port so as to be disposed in a direction crossing the suction port at any position of the suction port, a plurality of ships Fluid intake device. The method of claim 8,
And a strength reinforcing member for the suction port compartment of the bell mouse having at least one guide surface for guiding the flow of the fluid flowing toward the pipe. The method of claim 10,
The guide surface is provided symmetrically with respect to the central axis of the strength reinforcing member for the inlet compartment,
The tip portion of the guide surface is a fluid suction device of the ship is formed sharply sharply along the direction in which the fluid is sucked. The method of claim 8,
The suction port is a fluid suction device of the ship having an elliptical cross-sectional shape is formed long along the longitudinal direction of the partition plate. The method of claim 8,
And the tank is a ballast tank in which the ballast number as the fluid is filled therein for the balance of the ship.

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