JP2010189923A - Jelly fish removing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detachably position a jelly fish removing tool to an intake provided on the portside of a tanker. <P>SOLUTION: A square water flow generating pipe 10 is suspended from a deck Se by two suspending ropes 31 and positioned vertically and longitudinally. The water flow generating pipe 10 is positioned laterally and longitudinally by two guide ropes 52 each provided with a weight 53 attached to a leading end (lower end) 52a while guiding its raising and lowering operation. The pipe 10 has a number of blowout holes to blow water fed to the pipe 10 through a feed hose 21 connected to a pump (hydrant) B on the deck Se into the sea therethrough, so that the water flow prevents a jelly fish K from approaching to the intake A. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a jellyfish removing tool that prevents a jellyfish from entering a portion of a wall surface of a structure located in water from a water intake port that is opened sideways.

  In thermal power plants, nuclear power plants, chemical factories, and the like, a large amount of water is taken from the sea and canals and used as cooling water in order to cool the facilities inside the plant. For this reason, when a large amount of jellyfish is generated, the jellyfish is taken from the intake port and clogs the water intake device such as the water intake pump to reduce the output of the device or, in extreme cases, stop the device. Or

  Thus, various devices for preventing jellyfish from being taken in from the water intake have been proposed and put into practical use.

  For example, in Patent Document 1, an air-mixing jet nozzle is provided outside a water intake port that is open to the bottom of the water, and an air-jet stream in which pressure water and air are mixed is ejected in a direction away from the water port. Yes. As a result, an ascending water flow with no gap is generated in the vicinity of the water intake to prevent the jellyfish from flowing in, and the jellyfish absorbs air, thereby preventing the jellyfish from descending again to the water bottom near the water intake.

  Further, in Patent Document 2, a curtain wall, a net, an outer air ejection pipe, and a lower air ejection pipe are disposed in the vicinity of the water intake to prevent jellyfish from entering the water intake.

Further, in Patent Document 3, a large number of air diffusion nozzles are provided on the ocean bottom of the jellyfish inflow prevention net, and the jellyfish that rises on the bubbles ejected from the nozzles are extracted from the jet nozzle of the high-pressure water main pipe. The water is ejected to the ocean side by the water flow spouting to the ocean side.
JP 2000-204537 A JP-A-4-24312 (Patent No. 2502788) Japanese Patent Laid-Open No. 10-245834

  In all of the above-mentioned Patent Documents 1 to 3, a facility for eliminating jellyfish is fixedly disposed near the water inlet.

  For this reason, it is difficult to apply these facilities to, for example, a water intake provided on a ship such as a tanker, that is, a water intake provided on a port or starboard in order to cool a part of the ship's equipment. is there. This is because when these facilities are provided on the port or starboard, these facilities obstruct the navigation of the ship or may be damaged by the navigation.

  Therefore, the present invention can be detachably attached to a water intake of a ship or the like, and at the time of removal, there is no part of the device that obstructs navigation on the side of the ship, and in addition to the water intake. An object of the present invention is to provide a jellyfish removing tool that can be easily positioned.

  The invention which concerns on Claim 1 is related with the jellyfish removal tool for preventing that a jellyfish penetrate | invades from the said water intake port with respect to the water intake port which is arrange | positioned in the part located in the water in the side wall of a structure, and opens horizontally. . The jellyfish exclusion device according to the present invention is formed in a loop shape, and is positioned at a predetermined position when viewed from the front side facing the water intake port, and is arranged at a predetermined position. A movable water flow generating pipe that surrounds from the front side, and a lower end connected to the water flow generating pipe, and an upper end is detachably attached to a pump disposed on the working position side located on the water in the structure. A flexible water supply pipe that is connected to the pump and sends water from the pump to the water flow generation pipe, and a rope that suspends the water flow generation pipe from the working position side and positions the water flow generation pipe in the vertical direction. And a rope-like positioning tool that is suspended from the working position side to position the water flow generation pipe in the left-right direction and the front-rear direction, and the water flow generation pipe is positioned at the predetermined position. In the state Having a plurality of ejection holes for ejecting toward the water sent through the water pipe into the water, it is characterized.

  The invention according to claim 2 is the jellyfish exclusion device according to claim 1, wherein the plurality of ejection holes cause the reaction that acts on the water flow generation pipe by ejecting water from the ejection holes. It is comprised so that it may act as a force biased toward the said side wall, It is characterized by the above-mentioned.

  The invention according to claim 3 is characterized in that, in the jellyfish exclusion device according to claim 1 or 2, it has a first weight for urging the water flow generating tube toward the bottom of the water.

  According to a fourth aspect of the present invention, in the jellyfish removing device according to the second or third aspect, in the state where the water flow generating pipe is positioned at the predetermined position, the lower end portion of the water supply pipe is connected to the water supply pipe. An upper tube, a lower tube extending in the left-right direction below the upper tube, a left tube extending in the up-down direction and connecting the left end sides of the upper tube and the lower tube, and extending in the up-down direction. A right pipe connecting the right end sides of the upper pipe and the lower pipe, and the upper pipe and the lower pipe have forward-facing holes for ejecting water to the front side as the ejection holes, and the left pipe Has the forward hole as the ejection hole and a leftward hole to be ejected to the left side, and the right pipe has the forward hole and a rightward hole to be ejected to the right side as the ejection hole, It is characterized by that.

  The invention according to claim 5 is the jellyfish removing tool according to claim 4, wherein the lower tube has a drain hole at a lower end.

  According to a sixth aspect of the present invention, in the jellyfish removing tool according to any one of the first to fifth aspects, the positioning tool is attached to a left side portion and a right side portion of the water flow generation pipe, respectively. A guide member having a guide hole; a rope having an intermediate portion extending vertically through the guide hole and having an upper end attached to the working position; and a second weight attached to the lower end of the rope And having.

  The invention according to claim 7 is the jellyfish exclusion device according to claim 6, wherein the guide member is attached to an upper end side and a lower end side of the left tube and an upper end side and a lower end side of the right tube. It is characterized by that.

  According to the first aspect of the present invention, the jellyfish remover can be disposed at a predetermined position when necessary, and can be removed from the predetermined position when unnecessary. The jellyfish remover is designed to position the water flow generating pipe in the vertical direction by suspending the looped water flow generating pipe from the work position on the water with a rope-like hanger from the underwater intake. In addition, the water flow generating tube can be positioned in the left-right direction and the front-rear direction with a cord-like positioning tool from the working position side. Thereby, a loop-shaped water flow generation pipe can be arrange | positioned in a predetermined position, and a water intake can be enclosed from a front side by a water flow generation pipe. In this state, when water is supplied to the water flow generation pipe via the flexible water supply pipe by the work position side pump, the supplied water is jetted out of the plurality of jet holes of the water flow generation pipe toward the water. Thereby, it is possible to prevent the jellyfish in the water from approaching the water intake port by generating a water flow.

  According to the second aspect of the present invention, the water flow generating pipe is positioned in the vertical and horizontal directions by the rope-like hanging tool and the rope-like positioning tool. Is biased toward the side wall where the water intake is formed, thereby preventing a gap from forming between the side wall on the peripheral edge of the water intake and the water flow generation pipe, and the jellyfish is drawn through this gap. Intrusion into the mouth can be prevented.

  According to the third aspect of the present invention, the posture of the water flow generating pipe disposed at the predetermined position can be stabilized by urging the water flow generating pipe toward the bottom of the water by the first weight.

  According to the invention of claim 4, the water flow generating pipe is formed in a rectangular loop shape by the upper pipe, the lower pipe, the left pipe and the right pipe, and water is ejected from the four pipes to the front side. The water flow can be generated in the left direction by the left tube and in the right direction by the right tube.

  According to the fifth aspect of the present invention, for example, when the underwater water flow generation pipe is pulled up from the water to the water, the water in the water flow generation pipe can be discharged from the drain hole, so that the weight during the pulling is reduced. Can do.

  According to the sixth aspect of the present invention, the cable body having the second weight attached to the lower end side is vertically penetrated through the guide holes of the guide members attached to the left side portion and the right side portion of the water flow generating pipe. The water flow generating pipe can be positioned in the left-right direction and the front-rear direction. Moreover, the raising / lowering operation | movement of a water flow generation pipe can be guided. Furthermore, since the water flow generating pipe is guided by the cable body so as to be movable to some extent, as described above, the water flow generating pipe is urged and moved to the side wall side by the reaction when water is jetted to the water flow generating pipe or the front side. It is possible to eliminate the gap between the side wall and the water flow generation pipe, and to prevent the jellyfish from entering through this gap. Moreover, since the raising / lowering operation | movement of a water flow generation pipe is guided by a rope body, it is not necessary to provide the member for guiding the raising / lowering of a water flow generation pipe on the side wall side fixedly.

  According to the seventh aspect of the present invention, since the guide member having the guide hole is attached to the upper side and the lower side of the left pipe and the upper side and the lower side of the right pipe, the water flow generating pipe is at least at these four locations. Can be stably positioned, and can be guided in raising and lowering.

Hereinafter, the best embodiment of the present invention will be described in detail with reference to the drawings. In addition, in each drawing, the member etc. which attached | subjected the same code | symbol are the same structures, The duplication description about these shall be abbreviate | omitted suitably. Moreover, in each drawing, members and the like that are not necessary for the description are omitted as appropriate.
<Embodiment 1>

  With reference to FIGS. 1-7, the jellyfish exclusion tool 1 of Embodiment 1 is demonstrated as an example of the jellyfish exclusion tool which concerns on this invention. Here, FIG. 1 is a diagram schematically showing a state in which the jellyfish remover 1 is applied to a water intake A provided on a port (side wall) Sa of a tanker (ship) S as a structure. FIG. 2 is a perspective view of the water flow generation tube 10 that is a component of the jellyfish removing tool 1 as viewed from the upper left. 3A and 3B are a front view (front view) and a rear view (rear view) of the water flow generation tube 10, respectively. 4A, 4B, 4C, and 4D are a top view, a bottom view, a left side view, and a right side view of the water flow generation tube 10 in this order. FIG. 5A is a front view schematically showing the position of the water intake A provided on the port side Sa of the tanker S and the water flow generating pipe 10 disposed at the predetermined position P, and FIG. It is a top view. FIG. 6A is a schematic diagram for explaining a state in which the water flow generation pipe 10 is suspended in the vicinity of the water intake A. FIG. 6B schematically shows a state in which water is ejected from the water flow generation pipe 10. FIG. FIG. 7A is a front view for explaining an example in which the vertical flow reinforcement pipes 17a and 17b are provided on the water flow generation pipe 10, and FIG. , 18b is a front view for explaining an example provided.

  As shown in FIG. 1, the jellyfish remover 1 suspends a water flow generation pipe 10 that is formed in a loop shape and ejects water, a water supply pipe 20 that sends water to the water flow generation pipe 10, and the water flow generation pipe 10. The suspension tool 30, a first weight 40 serving as a weight of the water flow generation pipe 10, and a positioning tool 50 for positioning the water flow generation pipe 10 are provided.

  Here, the water intake A will be described with reference to FIGS. 5A and 5B and FIGS. 6A and 6B. The water intake A is a hole having a diameter of about 30 cm to 60 cm for taking in seawater. In the tanker S, for example, in order to prevent explosion of a cargo tank loaded with crude oil, an inert gas is injected into the tank for the purpose of reducing the oxygen concentration in the tank. As this inert gas, the exhaust gas from the inboard boiler is used. For this reason, the inert gas contains impurities such as soot, and since it is high temperature, it cannot be used as it is. The scrubber pump cleans and cools the inert gas, and the scrubber pump cleans and cools the inert gas using seawater taken from the water intake A. The scrubber pump is equipped with a strainer (filter) to prevent foreign matter from entering the pump. If foreign matter such as jellyfish enters from the intake A, the foreign matter such as jellyfish As a result, the strainer becomes clogged, and the capacity of the pump decreases or stops. Therefore, the jellyfish removing tool 1 prevents the jellyfish from entering from the water intake A.

  As shown in FIGS. 5 (a) and 5 (b), the above-described intake A is disposed on the port side Sa with respect to the hull having the port Sa, the starboard Sb, the bow Sc, the stern Sd, the deck Se, the ship bottom Sf and the like. Has been. In the example shown in the figure, the rear end side of the port Sa and the lower end side, that is, the rear side closer to the stern Sd than the bow Sc, the lower side closer to the ship bottom Sf than the deck Se, and below the water surface M It is arranged in the part to be. In the case of a large tanker S, the height of the water intake A, that is, the height (distance) H from the upper deck Se of the port side Sa to the water intake A in FIG. There is. Further, since the hull is normally configured such that the width W in the left-right direction becomes narrower toward the lower end side, as shown in FIGS. 6 (a) and 6 (b), the port side Sa is placed from the deck Se to the bottom Sf. The further it is, the closer it is to the inner side (the side closer to the center line C (see FIG. 5B) located at the center in the left-right direction of the hull). For this reason, the water intake A is also arranged so as to be inclined inwardly and slightly downward from the vicinity of the deck Se in the port side Sa. Thus, since the water intake A is located on the lower end side of the port side Sa and is located so as to enter inside, the water flow generating pipe 10 of the jellyfish removing tool 1 is connected to the water intake A as described later. When positioning to a predetermined position, it cannot carry out while visually checking the water intake A from the deck Se located above the water intake A used as a work position. Therefore, in the jellyfish removing device 1 according to the present embodiment, even when the height H from the deck Se to the intake port A is high and the intake port A is located on the inner side, it can be dealt with satisfactorily. It is configured. Hereinafter, the configuration of the jellyfish removing tool 1 will be described in detail including these points.

  As shown in FIGS. 1 and 2, the water flow generation tube 10 of the jellyfish remover 1 is configured in a substantially rectangular closed loop shape. The water flow generation pipe 10 includes an upper pipe 11 extending in the left-right direction, a lower pipe 12 disposed in parallel to the upper pipe 11 below the upper pipe 11 and extending in the left-right direction, and a left end side and a lower pipe 12 of the upper pipe 11. The left tube 13 extending in the up-down direction so as to connect the left end side of the upper tube 11 and the left tube 13 is arranged in parallel to the left tube 13 and extends in the up-down direction so as to connect the right end side of the upper tube 11 and the right end side of the lower tube 12. The right tube 14 is formed, and in the present embodiment, it is formed in a substantially square shape as a whole. For example, the distance between the central axes (not shown) of the upper pipe 11 and the lower pipe 12 and the distance between the central axes (not shown) of the left pipe 13 and the right pipe 14 are formed in a square shape of about 2 m. Has been. The upper tube 11, the lower tube 12, the left tube 13, and the right tube 14 are connected by four elbows 16 arranged at four corners of a square shape. That is, the left end and the right end of the upper tube 11 are connected to the upper end of the left tube 13 and the upper end of the right tube 14 by an elbow 16, respectively, and the left end and the right end of the lower tube 12 are respectively connected to the upper end of the left tube 13 by the elbow 16. The lower end and the lower end of the right pipe 14 are connected. As the above-mentioned upper tube 11, lower tube 12, left tube 13, and right tube 14, for example, a vinyl chloride tube having a diameter of 65 mm and a thickness of about 2 to 4 mm can be used. This is because the diameter of a digestion hose normally used in a ship or the like is 65 mm, and in this embodiment, this digestion hose is used as the water supply hose (water supply pipe body) 21 of the water supply pipe 20, and is set accordingly. Has been. As described above, when the diameters of the upper tube 11, the lower tube 12, the left tube 13, and the right tube 14 constituting the water flow generation tube 10 are the same as the diameter of the water supply hose 21, the tube diameters are different. The water pressure can be prevented from lowering, and the water pressure and amount of water sent from the water supply hose 21 can be sufficiently secured, so that the water can flow smoothly into the water flow generation pipe 10. In order to further improve the strength of the water flow generation pipe 10, an aluminum pipe may be used instead of the vinyl chloride pipe. The material of the water flow generation tube 10 is not limited to a vinyl chloride tube or an aluminum tube, and any material can be used as long as it is light and can ensure sufficient strength.

  As shown in FIGS. 2 and 3, the upper tube 11 is arranged in the left-right direction by connecting two short tubes 11 a and 11 a by a T-shaped tube 15. The upper end of the T-shaped tube 15 is configured to be easily attached to and detached from a joint 22 at the tip (lower end) of a water supply hose 21 described later. In addition, as this joint 22, a Nakajima type coupling can be used, for example. This Nakajima type coupling is a coupling used for a fire hydrant or digestion hose usually used in a Japanese ship.

  As shown in FIGS. 3A and 3B, a metal elongated plate-like reinforcing plate 61 is attached to the lower end portion of the upper tube 11 and the upper end portion of the lower tube 12 in the left-right direction. . As will be described later, a water supply hose (water supply pipe main body) 21 is connected to the water flow generation pipe 10 via a joint 22, but the water supply hose 21 is wound around when not in use and unwinds when unwound. Therefore, when water is supplied in an extended state, a force that rotates the joint 22 around the joint 22 acts on the water flow generation tube 10. Due to this force, the left pipe 13 side or the right pipe 14 side of the water flow generation pipe 10 may hit the port Sa on the tanker S, and the water flow generation pipe 10 may be damaged. In order to prevent this, a reinforcing plate 61 is attached. In addition, illustration of the metal plate 61 is abbreviate | omitted in drawings other than Fig.3 (a), (b).

  As shown in FIGS. 2, 3 (a) and 3 (b), guide members 51 are provided on the upper end side and the lower end side on the left end side of the left tube 13 and on the upper end side and the lower end side on the right end side of the right tube 14. It is attached. In this embodiment, the guide member 51 is formed in a tubular shape, and its axis is directed in the vertical direction. That is, a guide hole 51a oriented in the vertical direction is formed in the guide member 51, and a guide rope (strip body) 52 of a positioning tool 50 described later passes through the guide hole 51a.

  In the upper tube 11, the lower tube 12, the left tube 13, and the right tube 14 of the above-described water flow generation tube 10, the ejection holes a, b, for ejecting the water sent from the water feeding pipe 20 into the sea (underwater). c and the like are provided. Each short pipe 11a of the upper pipe 11 has two jet holes (forward holes) a facing forward at the front end (front side) so that they face forward at different positions in the left-right direction at intervals of about 33 cm. It has been drilled. The lower pipe 12 is formed with five ejection holes (forward holes) a at the front end (front side) at different positions in the left-right direction so as to face the front at an interval of about 33 cm. Further, as shown in FIG. 4B, the lower pipe 12 has three ejection holes (downward holes) c at the lower end so as to face downward at different positions in the left-right direction at an interval of about 66 cm. It has been drilled. These three ejection holes c also act as drain holes for draining the water clogged when the underwater water flow generation pipe 10 is pulled up onto the water. The left pipe 13 and the right pipe 14 are provided with five ejection holes (forward holes) a at the front end (front side) at different positions in the vertical direction so as to face forward at intervals of about 33 cm. Yes. Further, as shown in FIG. 4C, at the left end portion of the left tube 13, there is a different position in the vertical direction, that is, one above the upper guide member 51, and between the upper and lower guide members 51. A total of four ejection holes (left-facing holes) b are provided below the lower guide member 51 so as to face to the left. Further, as shown in FIG. 4 (d), at the right end of the right tube 14, there are different positions in the vertical direction, that is, one above the upper guide member 51, and between the upper and lower guide members 51. In addition, a total of four ejection holes (right-facing holes) b are formed below the lower guide member 51 so as to face rightward.

  Water sent through a water pipe 20 to be described later is ejected forward from an ejection hole a of the water flow generation pipe 10, and is ejected downward from an ejection hole c of the lower pipe 12. From the ejection hole b of the left tube 13, it is ejected to the left, and from the ejection hole b of the right tube 14, it is ejected to the right. In the water flow generation tube 10 of the present embodiment, by urging water from the ejection holes a, b, and c, as a reaction, a force that urges the water flow generation tube 10 backward acts on the water flow generation tube 10. Therefore, as will be described later, when water is ejected from the ejection holes a, b, and c in a state where the water flow generation tube 10 is suspended in the vicinity of the water intake A by the suspending tool 30, the water flow generation tube 10 is positioned rearward. Will move toward the intake port A of the port Sa.

  In addition, although the case where the underwater generation pipe | tube 10 was formed in the substantially square shape was demonstrated above, it is not limited to this, As long as the circumference | surroundings of the water intake A in port Sa can be surrounded effectively, other shape is possible. For example, it may be formed in a rectangular shape, a circular shape, an elliptical shape, or the like. In the case of a rectangular shape, the short side may be set to about 2 m. In the case of a circular shape, the diameter may be set to about 2 m. However, when the water flow generating pipe 10 is formed in a substantially square shape, its manufacture is easier than a circular shape or an elliptical shape, and the water intake A is surrounded without waste compared to a rectangular shape. can do. Further, the size, number, and position of the ejection holes a, b, and c are not limited to the above. For example, what is necessary is just to set suitably according to the kind of jellyfish used as exclusion object, the predicted generation amount of the target jellyfish, and the like. In the above-mentioned example, even if the jellyfish has jet holes a, b, and c targeted for moon jellyfish with low swimming ability, even if the water flow formed by the water jetted from the jet holes a, b, and c is weak By removing the jellyfish relatively easily, it can be prevented from entering the water intake A. On the other hand, when the exclusion target is a jellyfish with high swimming ability, the diameter of the ejection holes is increased or the number of the ejection holes is increased, and the water is ejected from these ejection holes. It is better to make the water flow stronger. However, the urging | biasing force toward port port Sa acts on the water flow generation pipe 10 by reaction of the water ejected from the whole ejection hole. Thus, as described above, even when the port Sa is inclined, the urging force can bring the water flow generation tube 10 close to the port Sa, and the back side of the water flow generation tube 10 It is possible to prevent the jellyfish from entering the water intake A from between the (rear surface side) and the port side Sa.

  As shown in FIG. 1, the water supply pipe 20 includes a water supply hose (water supply pipe main body) 21 and a joint 22 provided at the tip (lower end in FIG. 1) 21 a of the water supply hose 21. As the water supply hose 21, a digestion hose used in a normal ship including the tanker S can be used. Therefore, the proximal end (upper end in FIG. 1) 21b of the water supply hose 21 can be connected to a fire hydrant (pump) B provided on the deck Se of the tanker S using a Nakajima coupling (not shown). As shown in FIG. 1, the length of the water supply hose 21 reaches the water flow generation pipe 10 from the fire hydrant B in a state where the water flow generation pipe 10 is disposed at a predetermined position P that surrounds the water intake A from the front side. It is set to such an extent that an appropriate margin length can be secured. In addition, the diameter of the water supply hose 21 is 65 mm, which is the same as the diameter 65 mm of the water flow generation tube 10 as described above. Thus, since the digestion hose with which the tanker S is always available can be diverted as the water supply hose 21, it is not necessary to prepare the water supply hose 21 specially for the jellyfish removing tool 1.

  As shown in FIG. 1, the rope-like hanging tool 30 is constituted by two hanging ropes (stripe bodies) 31. For example, when a 9 mm nylon rope is used as the suspension rope 31, it is difficult to slide and work, so a 12 mm Cremona thread rope is used to prevent slippage. Of the two suspension ropes 31, the tip (lower end) 31 a of one suspension rope 31 is connected to the left side of the upper tube 11 with respect to the T-shaped tube 15, and the other suspension rope 31 The tip (lower end) 31 a is connected to a portion on the right side of the upper tube 11 with respect to the T-shaped tube 15. Moreover, the base end (upper end) 31b of the two suspension ropes 31 is fixed to the handrail (not shown) of the deck Se in the work position side, for example. The two suspending ropes 31 constituting the suspending tool 30 adjust the length of each of the suspending ropes 31 to balance the water flow generating pipe 10 in the horizontal direction and to position the water flow generating pipe 10 in the vertical direction. In addition, positioning in the front-rear direction can be performed. In addition, as a rope body of the hanging tool 30, it can replace with the hanging rope 31 and can also use a chain | strand.

  The first weight 40 includes two weights 42 and a rope 41 that suspends each weight 42. One weight 42 is connected to the lower end of one rope 41 whose upper end side is connected to the left end side of the lower tube 12. The other weight 42 is connected to the lower end of one rope 41 whose upper end side is connected to the right end side of the lower tube 12. The first weight 40 urges the lower pipe 12 downward with respect to the upper pipe 11 suspended by the two suspension ropes 31 when the water flow generating pipe 10 is put in water. The tube 12 is positioned below the upper tube 11. As a result, the entire water flow generation tube 10 can take a stable posture in water. As will be described later, when the water 42 is ejected from the ejection holes a, b, and c of the water flow generation tube 10, the water flow generation tube 10 is shown in FIG. Thus, the weight is set so as not to prevent the port Sa from inclining following the shape of the vicinity of the water intake A in the port Sa. Thus, since the first weight 40 is attached to the lower pipe 12 positioned at the lower end of the water flow generating pipe 10 configured in a substantially square shape, the upper pipe 11 is suspended by the hanging rope 31. In combination with this, a moment can be applied to the lower tube 12 so that the lower tube 12 is positioned below the upper tube 11 as a reference. Thereby, the attitude | position of the water flow generation pipe 10 is stabilized.

  As shown in FIG. 1, the positioning tool 50 includes four guide members 51 provided on the water flow generation pipe 10 side, two cable-shaped guide ropes (strands) 52, and two weights 53 ( Second weight). The guide members 51 are respectively attached to an upper end side and a lower end side on the left end side of the left tube 13, and are respectively attached to an upper end side and a lower end side on the right end side of the right tube 14. Each guide member 51 is formed in a tubular shape whose axis is directed in the vertical direction. That is, the guide member 51 has a guide hole 51a (see FIG. 2) penetrating in the vertical direction. The two guide ropes 52 have a base end (upper end) 52b fixed to, for example, a handrail of the deck Se, and an intermediate portion that passes through the guide holes 51a of the two guide members 51 in the vertical direction. ) 52a is connected to a weight 53. The distal end side is attached to the deck Se so that the interval between the two guide ropes 52 is substantially the same as the interval between the guide member 51 attached to the left tube 13 and the guide member 51 attached to the right tube 14. For example, when the guide rope 52 is suspended from the work position side of the deck Se of the anchored tanker S, the length of each guide rope 52 from the handrail is a little more marginal with the weight 53 landing on the seabed. The length with In the above description, the case where each guide member 51 is formed in a tubular shape has been described. However, instead of this, a ring shape may be used, and two upper and lower guide members 51 may be connected. It may be formed in a single long tube. However, when it is formed in one long annular shape, it is easy to manufacture, but there are disadvantages such as an increase in weight and an obstacle to the ejection hole b. As described above, the four guide members 51 are provided at two locations on the upper end side and the lower end side of the left tube 13 with respect to the left guide rope 52 and on the right tube 13 with respect to the right guide rope 52. Are provided at two locations on the upper end side and the lower end side. That is, as shown in FIG. 1, the water flow generation pipe 10 is guided by a total of four guide members whose left and right and top and bottom positions are different when viewed from the front side (front side). For this reason, when the water flow generating pipe 10 is guided by the two guide ropes 52 having different positions in the left-right direction, and when the water flow generating pipe 10 is disposed at the predetermined position P surrounding the water intake A from the front side. In addition, the position in the front-rear direction and the left-right direction, particularly the position in the left-right direction, is guided and positioned in a stable state. The positioning of the water flow generation pipe 10 in the vertical direction is performed by the two hanging ropes 31 constituting the above-described hanging tool 30.

  Next, an example of use of the jellyfish removing tool 1 having the above-described configuration will be described.

  First, the position of the water intake A to which the water flow generating pipe 10 of the jellyfish removing tool 1 is attached is confirmed based on the design drawing of the tanker S or the like. The water intake A is disposed on the rear side of the port side Sa of the tanker S, as shown in FIGS. The jellyfish remover 1 is attached with the portion of the deck Se located above the water intake A as a work position.

  The base end of the rope 41 is fixed to each of the left end side and the right end side of the lower pipe 12 of the water flow generation pipe 10 and a weight 42 is attached. Further, the tips 31a of the two hanging ropes 31 are fixed to the left end side and the right end side of the upper tube 11, respectively. The middle part of the left suspension rope 52 with the weight 53 fixed to the tip 52a is passed through the guide holes 51a (see FIG. 2) of the upper and lower guide members 51 of the left tube 13, and similarly to the tip 52a. The middle part of the right suspension rope 52 to which the weight 53 is fixed is passed through the guide holes 51a (see FIG. 2) of the upper and lower guide members 51 of the right tube. Then, the joint 22 on the distal end 21 a side of the water supply hose 21 whose base end 21 b side is connected to the fire hydrant B of the tanker S is connected to the T-shaped tube 15 of the water flow generation pipe 10.

  Next, over the handrail in the vicinity of the work position (handrail located above the water intake A), the water flow generation pipe 10 is positioned so that the upper pipe 11 is located above and the lower pipe 12 is located below, It is held in the same posture as the posture when it is arranged at a predetermined position P surrounding the water intake A. At this time, the water intake A is positioned approximately in the center in the left-right direction of the water flow generation pipe 10, that is, between the left pipe 13 and the right pipe 14. In the state where the water flow generation pipe 10 is held over the handrail, the two guide ropes 52 penetrating through the two guide members 51 are fed downward, and the weight 53 is gradually lowered to enter the water from the water surface. And land on the seabed. Further, the guide rope 52 is extended a little to give a margin, and the base end 52b of the guide rope 52 is fixed to the handrail. By providing a margin, when water is ejected from the ejection holes a, b, and c of the water flow generation tube 10, the water flow generation tube 10 is easily moved to the water intake A side. These two guide ropes 52 serve as guides when the water flow generating pipe 10 is lowered to the predetermined position P or pulled up from the predetermined position P.

  Subsequently, the water flow generating pipe 10 is lowered while supporting the weight by the hanging rope 31. At this time, since the water flow generating pipe 10 is guided by the two guide ropes 52, it can be lowered in a stable posture. When the water flow generation pipe 10 is lowered to near the water surface M, it is stopped once, the fire hydrant B is opened, water is supplied from the water supply hose 21 to the water flow generation pipe 10, and the water flow generation pipe 10 is filled with water. Close the fire hydrant. This makes it easy to sink when the water flow generating tube 10 enters the sea. When the water flow generation pipe 10 that has entered the sea is further lowered, and the water intake A is considered to be located at substantially the center in the vertical direction of the water flow generation pipe 10, that is, in the middle of the upper pipe 11 and the lower pipe 12, The descent of the generating tube 10 is stopped, and the base ends 31b of the two hanging ropes 31 are fixed to the handrail. As described above, the water flow generation pipe 10 can be disposed at the predetermined position P that surrounds the water intake A from the front side. At this time, as shown in FIG. 6A, when the port Sa of the tanker S is inclined, a gap is left between the water flow generation pipe 10 and the port Sa (the intake A). However, when the fire hydrant B is opened in this state, the water fed to the water flow generation pipe 10 through the water supply hose 21 is ejected from the ejection holes a, b, c, etc., and the water flow is generated by the reaction as described above. As shown in FIG. 6 (b), the pipe 10 moves rearward (intake port A side) and comes into close contact with the port Sa, so there is no gap and it is possible to prevent the jellyfish K from entering from here. it can. The water jetted from the jet holes a, b, and c of the water flow generation pipe 10 can generate a water flow that causes the jellyfish K to move away from the water intake A. Therefore, this water flow causes the jellyfish K to enter the water intake A. This can be prevented.

  When pulling up the water flow generation pipe 10, first, the fire hydrant B is closed, the hanging rope 31 is pulled upward, and the water flow generation pipe 10 is pulled up until the whole is exposed from the water surface M, and is stopped once. Thereby, the water accumulated in the water flow generation pipe 10 is discharged from the ejection hole c of the lower pipe 12 which also acts as a drain (drainage), and the water flow generation pipe 10 becomes light. Then, the water flow generation pipe 10 is pulled up on the deck Se at a stretch. At this time, since the two guide ropes 52 guide the lifting operation of the water flow generating pipe 10, it can be pulled up in a stable posture. Subsequently, the two guide ropes 52 are pulled up, and the weight 53 is pulled up on the deck Se. Furthermore, the joint 22 of the water supply rope 21 is removed, and the water supply rope 21 is returned to the original position. By the above, the water flow generation pipe 10 can be pulled up on the deck Se, and the whole jellyfish remover 1 can be removed from the port side Sa of the tanker S.

  According to the jellyfish removing device 1 having the above-described configuration, the jellyfish removing device 1 can be easily attached to or removed from the water intake A. Further, when removed, the port Sa of the tanker S does not have any members that constitute the jellyfish removing device 1, such as the water flow generation pipe 10, and the members that guide its lifting and lowering. There is no possibility that the tanker S will be obstructed and that these members will not be damaged by the operation. Further, when positioning the water flow generating pipe 10 at a predetermined position, the vertical direction and the front-rear direction are positioned by the hanging rope 31 which is a rope body, and the horizontal direction and Positioning in the front-rear direction can be performed, and further, the guide rope 52 can guide the lifting and lowering operation of the water flow generating pipe 10. Therefore, in order to position the water flow generation pipe 10 at a predetermined position and guide its lifting and lowering operation, it is not necessary to provide a positioning member or a guide member on the port Sa side, and the entire configuration of the jellyfish removing tool 1 A simple and compact structure that can be attached and detached. Moreover, although it is a simple structure, the water flow generation pipe 10 can be easily arrange | positioned in the predetermined position P surrounding the water intake A.

  7 (a) and 7 (b) show another embodiment of the water flow generation tube 10. FIG. In the water flow generation pipe 10 shown in these drawings, the illustration of the ejection holes a of the upper pipe 11, the lower pipe 12, the left pipe 13, and the right pipe 14 is omitted. In the water flow generation pipe 10 shown in FIG. 7A, the upper pipe 11 and the lower pipe 12 are connected by two reinforcing pipes 17a and 17b directed in the vertical direction. Further, the reinforcing pipes 17a and 17b are also provided with forward-facing ejection holes a, and water is ejected forward from these ejection holes a to form a water flow. On the other hand, the water flow generating pipe 10 shown in (b) connects the left pipe 13 and the right pipe 14 with two reinforcing pipes 18a and 18b directed in the left-right direction. Also, the reinforcing pipes 18a and 18b are provided with forward-facing ejection holes a, and water is ejected forward from these ejection holes a to form a water flow.

  In the above description, the case where the jellyfish exclusion device according to the present invention is applied to the intake port A formed on the port side Sa of the tanker S as a structure has been described as an example, but the present invention is not limited thereto, For example, it can be easily attached to and removed from the intake port provided on the side wall of the quay as a structure in the same manner as described above.

It is a figure which shows typically the state which applied the jellyfish exclusion tool 1 with respect to the water intake A provided in port (side wall) Sa of the tanker (ship) S as a structure. It is the perspective view which looked at the water flow generation pipe | tube 10 which is a component of the jellyfish exclusion tool 1 from diagonally upper left. (A), (b) is the front view (front view) and back view (rear view) of the water flow generation pipe 10, respectively. (A), (b), (c), (d) is a top view, a bottom view, a left side view, and a right side view of the water flow generation tube 10 in this order. (A) is the front view which shows typically the position of the water intake A provided in port port Sa of the tanker S, and the water flow generation pipe 10 arrange | positioned in the predetermined position P, (b) is also a top view. . (A) is a schematic diagram explaining the state which suspended the water flow generation pipe 10 in the vicinity of the water intake A, (b) is a figure which shows typically the state which spouted the water from the water flow generation pipe 10. FIG. . (A) is a front view explaining the example which provided 17a, 17b with the vertical reinforcement pipe | tube in the water flow generation pipe 10, (b) is provided with the horizontal reinforcement pipe | tube 18a, 18b in the water flow generation pipe 10; It is a front view explaining the example.

1 Jellyfish Exclusion Tool 10 Water Flow Generation Pipe 11 Upper Pipe 12 Lower Pipe 13 Left Pipe 14 Right Pipe 20 Water Pipe 21 Water Pipe Hose (Water Pipe Body)
30 Suspension tool 31 Suspension rope (strand body)
40 First weight 50 Positioning tool 51 Guide member 51a Guide hole 52 Guide rope (strand body)
53 weight (second weight)
A Intake port a Outlet (forward-outlet)
B Fire hydrant (pump)
b Ejection holes (left-facing ejection holes, right-facing ejection holes)
c Spout hole (downward spout hole, drain hole)
K jellyfish P predetermined position S tanker (ship, structure)
Sa port (side wall)

Claims (7)

In the jellyfish exclusion tool for preventing the jellyfish from entering from the water intake port, which is disposed in the portion located in the water on the side wall of the structure and opens laterally,
It is formed in a loop shape, and when it is positioned at a predetermined position, as viewed from the front side facing the intake port, it is movable so as to surround the peripheral edge portion of the intake port from the front side. Water flow pipes,
A lower end portion is connected to the water flow generation pipe, and an upper end portion is detachably connected to a pump disposed on the working position side on the water in the structure so that water from the pump is supplied to the water flow generation pipe. A flexible water pipe to send,
A rope-like hanging tool that suspends the water flow generation pipe from the work position side to position the water flow generation pipe in the vertical direction;
A cord-like positioning tool that is suspended from the working position side and positions the water flow generating pipe in the left-right direction and the front-rear direction;
The water flow generating pipe has a plurality of ejection holes for ejecting water sent from the pump through the water feeding pipe toward the water in a state of being positioned at the predetermined position.
Jellyfish exclusion tool characterized by that. The plurality of ejection holes are configured such that a reaction acting on the water flow generation pipe by ejecting water from these ejection holes acts as a force for urging the water flow generation pipe toward the side wall.
The jellyfish exclusion tool according to claim 1. Having a first weight for urging the water flow generation pipe toward the bottom of the water;
The jellyfish exclusion tool according to claim 1 or 2, wherein In the state where the water flow generation pipe is positioned at the predetermined position, an upper pipe extending in the left-right direction and connected to the lower end of the water supply pipe, a lower pipe extending in the left-right direction below the upper pipe, A left pipe that extends in the vertical direction and connects the left end sides of the upper pipe and the lower pipe, and a right pipe that extends in the vertical direction and connects the right end sides of the upper pipe and the lower pipe, respectively.
The upper pipe and the lower pipe have, as the ejection holes, forward-facing holes for ejecting water to the front side,
The left pipe has, as the ejection hole, the forward-facing hole and a left-facing hole that ejects to the left side,
The right pipe has, as the ejection hole, the forward-facing hole and a right-facing hole that ejects to the right side.
The jellyfish exclusion tool according to claim 2 or 3, wherein The lower pipe has a drain hole at the lower end,
The jellyfish exclusion tool according to claim 4. The positioning tool includes a guide member having a vertical guide hole attached to a left side portion and a right side portion of the water flow generation pipe, an intermediate portion passing through the guide hole in the vertical direction, and an upper end side of the work. A strip attached to the position side, and a second weight attached to the lower end side of the strip;
The jellyfish exclusion tool according to any one of claims 1 to 5, wherein The guide members are attached to an upper end side and a lower end side of the left tube, and an upper end side and a lower end side of the right tube,
The jellyfish exclusion tool according to claim 6.

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