JP2007205040A - Jellyfish collecting recovery apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jellyfish collecting recovery apparatus low in cost with simple constitution and applicable also to an existing jellyfish collecting recovery facility. <P>SOLUTION: The jellyfish collecting recovery apparatus 1 used installed at an intake which has a curtain wall 30 comprises a conical collecting net 10 hollow inside, installed in the curtain wall 30 and capable of collecting jellyfishes floating in the sea water; a transfer pump 20 connecting the top part 11 of the conical collecting net 10 to an intake part 22 to transfer jellyfishes; a float 21 mounted to the transfer pump 20 to support the transfer pump 20; and a cord body 70 with one end fixed to a land or marine anchorage 80 and with the other end fixed to the transfer pump 20. The conical bottom face part side end 12 of the collecting net 10 is fixed to the curtain wall 30 and/or a bridge pier 50 supporting the curtain wall 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a jellyfish collection and collection processing apparatus that collects and collects jellyfish that flows in along with seawater in the vicinity of a water intake for taking in seawater.

  Power plants use large amounts of seawater to cool the steam. This seawater is taken from the sea near the power plant by a seawater pump through a water intake. Since this seawater is used as cooling water, it is desirable that the temperature is low, and a curtain wall is installed at the intake port in order to take water from a deep layer. In addition, a fixed screen is provided at the intake inlet in order to prevent large floating substances floating in the seawater from flowing into the intake.

  Large floating substances contained in seawater can be removed with a fixed screen, but jellyfish in the seawater may not be removed with this fixed screen and may enter the intake channel. When a jellyfish enters the intake channel, troubles such as a decrease in the amount of water intake occur. Therefore, measures are taken to prevent the jellyfish from flowing into the intake port. There are the following methods for preventing jellyfish from flowing into the water intake. A net is provided in front of the water intake, the jellyfish are collected by this net, a water flow is generated using a water flow generator, and the jellyfish collected by this water flow is moved away from the water intake. In addition, a method of removing a jellyfish by installing a net for preventing jellyfish inflow at a water inlet and moving the net when the jellyfish sticks to the net has been developed (see, for example, Patent Document 1).

  In addition, there is a method of providing a dust removing device such as a rotary screen in order to collect and collect jellyfish in the vicinity of the intake channel. This method collects jellyfish in seawater using a screen, but when a large amount of jellyfish arrives at once, the ability to transfer the collected jellyfish may be exceeded. If the amount of jellyfish collected exceeds the jellyfish transfer capacity, the collected jellyfish will return to the intake channel again, and eventually the jellyfish will block the screen, reducing the intake amount and hindering the operation of the power plant. Come on. For this reason, several methods for solving this have been proposed.

When a large amount of jellyfish arrives, the screen becomes clogged, and a water level difference occurs before and after the screen. Utilizing this, a technique has been developed in which the water level before and after the screen is detected, and when the water level exceeds a predetermined value, the screen is operated and the jellyfish in the dust removal bucket are sucked with a suction device (for example, a patent) Reference 2). Similarly, a method of transferring the collected jellyfish using an ejector has been developed (see, for example, Patent Document 3). Both increase the ability to collect jellyfish by increasing the transfer capacity.
JP 2001-107344 A JP 2004-232379 A JP 2001-329522 A

  The technique of Patent Document 1 can temporarily move the jellyfish away from the net, but in the long term, the jellyfish sticks to the net, and eventually disturbs water intake. Further, in the technique described in Patent Document 2, when a large amount of jellyfish arrives, the screen is clogged, and a water level difference occurs before and after the screen. Therefore, the water level is detected, the screen is operated, and the inside of the dust removal bucket The jellyfish is sucked with a suction device. It is intended to increase the amount of jellyfish handled by increasing the jellyfish transfer capacity, but it cannot cope with the arrival of jellyfish exceeding the collection capacity of the rotary screen.

  The technique described in Patent Document 3 has the same problem as the technique described in Patent Document 2. Of course, this can be dealt with by increasing the setting value of the arrival amount of the jellyfish and giving a margin to the specification of the dust removing device, but the equipment cost becomes high and the device becomes large. If the specification of the device is set in accordance with the abnormal value, there is a case where most of the device is idle in the case of the normal value. Furthermore, if it is not a technique that can cope with the arrival of a large amount of jellyfish without improving the existing equipment, the existing collection and collection facilities will rely on human power to process the jellyfish. End up. In addition, for collecting and collecting jellyfish, in addition to a large collection and collection device such as a rotary screen, a compact and inexpensive device capable of collecting and collecting jellyfish is also required.

  An object of the present invention is to provide a jellyfish collection and recovery device that is simple in construction and inexpensive. Furthermore, it aims at providing the jellyfish collection-and-recovery apparatus applicable also to the existing jellyfish collection and collection equipment.

The present invention is a jellyfish collection and collection device to be installed and used in a water intake having a curtain wall,
A trapezoidal collection net having a hollow interior and capable of collecting jellyfish floating in seawater installed in the curtain wall;
A transfer pump capable of transferring a jellyfish connecting the top of the conical collection net and the suction part;
A float attached to the transfer pump capable of supporting the transfer pump;
A string-like body that fixes one end to a land or sea fixed object and the other end to the transfer pump;
The trapping net is a jellyfish collecting and collecting device, wherein the end of the cone on the bottom side is fixed to the curtain wall and / or the pier that supports the curtain wall.

  Further, in the present invention, the collection network is installed along a seawater intake direction at the intake port, and a top portion of the collection network is installed downstream of the seawater intake direction. Item 2. A jellyfish collecting and collecting device according to Item 1.

  Further, in the present invention, the collection net has a smaller number of yarns intersecting the cone bus among the yarns constituting the collection net as compared with the number of yarns in the direction of the cone bus. Item 2. A jellyfish collecting and collecting device according to Item 1.

  The jellyfish collection according to claim 1, wherein the string-like body is fixed to the land or the marine fixed object or the transfer pump via an elastic body that can expand and contract. It is a recovery device.

The present invention also provides a jellyfish collection and recovery device according to any one of claims 1 to 4,
Furthermore, a dust removing device provided on the downstream side of the jellyfish collecting and collecting device and in the vicinity of the inlet of the intake channel,
It is a jellyfish collection collection | recovery apparatus characterized by including.

  The jellyfish collection / recovery device of the present invention is a jellyfish collection / recovery device that is installed and used at a water intake having a curtain wall, and has an inside capable of collecting jellyfish floating in seawater installed in the curtain wall. A hollow and conical collection net, a transfer pump capable of transferring a jellyfish connecting the top and the suction part of the conical collection net, a float attached to a transfer pump capable of supporting the transfer pump, and one end A string-like body fixed to a land or sea fixed object and the other end fixed to a transfer pump, and the trapping net is attached to a pier that supports the curtain wall and / or the curtain wall at the end on the bottom side of the cone. Since it is fixed, the structure is simple and can be manufactured at low cost.

  In particular, since the collection net is attached in a conical shape, and the suction part of the pump is connected to the top of the conical net, a flow is generated in the sea water when the pump sucks the sea water. Since the jellyfish move along the flow of the seawater, the jellyfish can be easily guided to the pump, and the jellyfish can be efficiently collected and recovered. Moreover, since the pump is mounted, the collected jellyfish can be easily transferred in large quantities.

  According to the present invention, the collection network is installed along the intake direction of seawater at the intake, and the top of the collection network is installed downstream of the intake direction of seawater. It is easy for jellyfish to enter the collection net. This makes it possible to efficiently collect and collect jellyfish.

  Further, according to the present invention, the collection net has a smaller number of yarns that intersect the cone bus among the yarns constituting the collection net, compared to the number of yarns in the direction of the cone bus. Does not interfere with the movement of jellyfish inside. Therefore, the jellyfish taken in the collection net smoothly moves to the transfer pump suction part.

  Further, according to the present invention, the string-like body is fixed to the land or sea fixed object or the transfer pump via the elastic body that can be expanded and contracted, so that the pump is A substantially constant position can be held. As described above, the jellyfish collection and recovery apparatus of the present invention can appropriately cope with even when the tide level fluctuates.

  Further, the jellyfish collection and recovery device of the present invention is provided in the vicinity of the inlet portion of the intake channel on the downstream side of the jellyfish collection and recovery device of any one of claims 1 to 4 and further on the downstream side of the jellyfish collection and recovery device. Since it includes a dust removal device, jellyfish collection and collection performance increases. Further, the jellyfish collection / recovery device of any one of claims 1 to 4 can be easily attached to an existing jellyfish collection / recovery device, and the jellyfish collection / recovery device of any one of claims 1 to 4 Can be made to function as an auxiliary device for an existing jellyfish collection and recovery device.

  FIG. 1 is a side view showing a schematic configuration of a jellyfish collecting and collecting apparatus 1 as an embodiment of the present invention. The jellyfish collection / recovery device 1 mainly includes a collection network 10 for collecting jellyfish and a transfer pump 20 for transferring the collected jellyfish. In addition, FIG. 1 is a figure which shows the schematic structure of this invention, and all are not necessarily described with the same reduced scale.

  The collection net 10 is hollow and has a conical shape, and is installed in the curtain wall 30 so that the top 11 of the cone is on the downstream side along the seawater intake direction. Most of the collection nets are located in seawater. The collection net | network 10 should just be a net | network which has a function which can collect a jellyfish and can pass seawater easily, for example, a fish net is illustrated. What is necessary is just to select the magnitude | size of the opening of the collection net | network 10 according to the magnitude | size of a jellyfish. Moreover, the collection net | network 10 is more preferable if the collected jellyfish is a net | network which can move to the top part 11 of a cone smoothly. This will be described later.

  The collection net 10 can be installed as follows. A string-like body 40 for supporting and reinforcing the collection net 10 is stretched between the curtain wall 30 and the transfer pump 20. Similarly, a string 60 for supporting and reinforcing the collection net 10 is stretched between the bridge pier 50 that supports the curtain wall 30 and the transfer pump 20. Since the string-like bodies 40 and 60 are for supporting and reinforcing the collection net 10, the string-like bodies 40 and 60 are stretched in a horizontal V shape in a side view according to the shape of the collection net 10. As the string-like bodies 40 and 60, a metal or resin wire, a rope, or the like can be used.

  While fixing the collection net | network 10 to these string-like bodies 40 and 60, the string-like body (illustration omitted) provided in the edge part of the collection net | network 10 by the side of the bottom face part 12 of the collection net | network 10 is made curtain wall 30. Or, it is secured to the pier 50 of the curtain wall. At this time, the string-like body provided at the end of the collection net 10 is fixed so that the bottom surface 12 of the collection net 10 has a substantially circular shape. On the other hand, the other end portion (conical top portion) of the collection net is fixed to the transfer pump 20. Thereby, the conical collection net | network 10 can be installed in seawater. When installing the collection net | network 10, it is desirable to install in the state which has fixed tension | tensile_strength so that a conical bus-line may become a straight line. Thereby, the jellyfish which flowed into the collection net | network 10 can be smoothly moved to the transfer pump 20 side. In addition, since the collection net | network 10 can be installed even if there is no string-like bodies 40 and 60, the string-like bodies 40 and 60 are not necessarily required.

  By installing the collection network 10 in this way, the collection network 10 has an opening area that decreases along the flow of seawater. From this, the jellyfish which flowed into the collection net | network 10 moves to the transfer pump 20 side naturally. Moreover, it is preferable that the collection net | network 10 has few the number of the thread | yarn 13 which cross | intersects the cone bus | bath among the thread | yarns which comprise the collection net | network 10, compared with the number of the thread | yarn 14 of the cone bus | bath direction. By adopting such a configuration, the jellyfish taken into the collection net 10 can be smoothly moved to the transfer pump 20 side without being caught by the yarn of the collection net 10.

  The transfer pump 20 is for transferring the jellyfish collected by the collection net 10 and includes a float 21 so as not to sink. An example of the float 21 is a urethane float. Further, one end of the transfer pump 20 is connected to the string-like bodies 40 and 60 and the collection net 10, and the other end is fixed to the land or marine fixed object 80 via the string-like body 70. Thus, the transfer pump 20 is held at a substantially constant position without sinking in seawater. Further, the string-like body 70 having one end fixed to the transfer pump 20 is fixed to the land or sea fixed object 80 via the elastic body 71 that can be expanded and contracted. Held in place. Examples of the elastic body 71 include rubber elastic bodies and springs.

  The type of the transfer pump 20 is not particularly limited. Any pump that can be used in seawater capable of transferring jellyfish may be used. For example, a submersible pump having a cutter function is exemplified. In the transfer pump 20, a conical guide 23 is provided in the suction part 22, and the transfer pump 20 and the collection network 10 can be connected by connecting the top of the collection net 10 to the cone. it can. Since the conical guide 23 provided in the suction portion 22 is at least partially submerged in seawater, the transfer pump 20 can suck seawater and the transfer pump 20 will not burn. . Since the discharge pipe 25 is connected to the discharge part 24 of the transfer pump 20, a jellyfish can be transferred to a jellyfish pit.

  The jellyfish collection and recovery apparatus 1 configured as described above can be used as follows. When the transfer pump 20 is activated, seawater is sucked from the suction part 22. By sucking in the seawater, a flow is generated in the seawater in the collection net 10, and the collected jellyfish are sucked together with the seawater by the transfer pump 20 and transferred to the jellyfish pit through the discharge pipe 25. The transferred jellyfish are collected and processed as industrial waste. At this time, since the collection net | network 10 is installed along the flow direction of seawater, and the collection net | network 10 is also formed in cone shape, a jellyfish can be collect | recovered efficiently.

  As described above, the jellyfish collection and recovery apparatus 1 of the present invention has a very simple configuration and can be manufactured at low cost. Moreover, the installation procedure and use method of the apparatus are simple, and the jellyfish can be easily collected and collected using the jellyfish collecting and collecting apparatus 1. As described above, the jellyfish collection and recovery apparatus 1 of the present invention can be used alone and can collect and recover jellyfish. However, it can be used together with other jellyfish collection and recovery apparatuses. Is possible.

  FIG. 2 is a side view showing a schematic configuration of a jellyfish collecting and collecting apparatus 100 as another embodiment of the present invention. In addition, FIG. 2 is a figure which shows the schematic structure of this invention, and all are not necessarily described with the same reduced scale. The jellyfish collection / recovery device 100 mainly includes a jellyfish collection / recovery device 1 and a dust removal device 110. The jellyfish collection / recovery device 1 is the jellyfish collection / recovery device 1 shown in FIG. 1, and large floating substances and foreign substances are taken in the intake channel downstream of the jellyfish collection / recovery device 1 installed in the curtain wall 30. A fixed screen 101 is provided to prevent the liquid from flowing into the apparatus. Further, a water intake gate 102 is provided downstream of the fixed screen 101.

  The dust removing device 110 is installed in the vicinity of the intake channel on the downstream side of the intake gate 102. The dust removing device 110 is a device that collects and collects jellyfish that flows in along with water intake (seawater). The model etc. of the dust removal apparatus 110 are not specifically limited. For example, a rotary screen type dust remover 110 can be used. The rotary screen type dust remover 110 is installed so as to cover the entire width of the water intake, and one end 111 of the rotary screen is located in seawater. A bucket is provided outside the screen, and the jellyfish is collected by a screen having an opening of about 10 mm and collected in a jellyfish pit (not shown).

  The jellyfish collection and recovery apparatus 100 configured as described above can be used as follows. When the transfer pump 20 of the jellyfish collection / recovery device 1 is started, seawater is sucked from the suction part 22. The seawater in the collection net 10 flows by sucking the seawater, and the collected jellyfish is sucked together with the seawater by the transfer pump 20, and the jellyfish is transferred to the jellyfish pit (not shown) through the discharge pipe 25. Is done. The transferred jellyfish are collected and processed as industrial waste. The jellyfish that have not been collected and collected by the jellyfish collecting and collecting apparatus 1 pass through the fixed screen 101 but are collected and collected by the dust removing device 110 installed on the downstream side of the fixed screen 101. The jellyfish collected by the dust removing device 110 are also collected in the jellyfish pit and disposed as industrial waste.

  Since the jellyfish collection / recovery device 100 includes the jellyfish collection / recovery device 1 and the dust removal device 110, the jellyfish can be efficiently recovered. For example, when the arrival amount of jellyfish is small, only the jellyfish collection / collection device 1 is operated, and when a large amount of jellyfish arrives, the jellyfish collection / recovery device 1 and the dust removal device 110 are operated simultaneously. Thereby, it is not necessary to design and manufacture the processing capacity of the dust removing device 110 in accordance with the abnormal arrival amount of jellyfish (a large amount of arrival amount), and the total cost of the jellyfish collecting and collecting device can be reduced.

  In addition, since the dust removing device 110 is basically the same as the existing dust removing device, the present invention can be easily applied to the existing dust removing device. If the jellyfish collection / recovery device 1 is used as an auxiliary device for an existing jellyfish collection / recovery device or jellyfish collection / treatment device, the processing capacity of the existing jellyfish collection / recovery device or jellyfish collection / treatment device is increased. It is possible to cope with the abnormal arrival of jellyfish.

1 is a side view showing a schematic configuration of a jellyfish collecting and collecting apparatus 1 as an embodiment of the present invention. It is a side view which shows schematic structure of the jellyfish collection collection | recovery apparatus 100 as other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,100 Jellyfish collection collection | recovery apparatus 10 Collection net 11 Collection net top part 12 Collection net bottom part 13, 14 Collection net thread 20 Transfer pump 21 Float 22 Transfer pump suction part 30 Curtain wall 50 Bridge pier 70 String-like body 71 Elastic body 80 Marine fixed object 110 Dust removal device

Claims (5)

A jellyfish collection and collection device to be installed and used at a water intake with a curtain wall,
A trapezoidal collection net having a hollow interior and capable of collecting jellyfish floating in seawater installed in the curtain wall;
A transfer pump capable of transferring a jellyfish connecting the top of the conical collection net and the suction part;
A float attached to the transfer pump capable of supporting the transfer pump;
A string-like body that fixes one end to a land or sea fixed object and the other end to the transfer pump;
The jellyfish collecting and collecting apparatus, wherein the collecting net is fixed to a bridge pier supporting the curtain wall and / or the curtain wall at a bottom side end of the cone.   The said collection net | network is installed along the uptake | capture direction of the seawater in the said intake port, The top part of the said collection net | network is installed in the downstream of the uptake | capture direction of seawater. Jellyfish collection and collection device.   The said collection net | network has few numbers of the thread | yarn which cross | intersects a cone bus | bath among the thread | yarns which comprise a collection net | network compared with the number of the thread | yarns of the cone bus | bath direction. Jellyfish collection and collection device.   The jellyfish collecting and collecting apparatus according to claim 1, wherein the string-like body is fixed to the land or the marine fixed object or the transfer pump via an elastic body that can expand and contract. A jellyfish collecting and collecting device according to any one of claims 1 to 4,
Furthermore, a dust removing device provided on the downstream side of the jellyfish collecting and collecting device and in the vicinity of the inlet of the intake channel,
A jellyfish collecting and collecting device characterized by comprising:

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