JPH0323384A - Floating body type wave pump - Google Patents

Abstract

PURPOSE:To perform the continuous feed of sea water by a method wherein through vertical movement of a float piston being reciprocative within floating guides floating on a sea surface, a piston in a cylinder chamber is reciprocated to pump up sea water. CONSTITUTION:A wave pump 1 is provided with a float piston 3 reciprocatively arranged within floating guides 2 floating on a sea surface, and a piston 5 slidably engaged internally of a cylinder chamber 4 located on the guides 2. Through vertical movement of the float piston 3 by means of wave energy, the piston 5 coupled to the piston 3 through a hollow shaft 6 is reciprocated in the cylinder chamber 4. During upward movement of the piston 5, water in an upper cylinder chamber 4a is boosted and delivered through a delivery pipe 8, and sea water is sucked in a lower cylinder chamber 4b through a suction pipe 13. During downward movement of the piston 5, water in the lower cylinder chamber 4b, reversely, is delivered through the delivery pipe 8.

Description

Detailed Description of the Invention (Industrial Application IF) This invention is a floating wave pump that uses wave energy and can supply fluids such as seawater and air without the need for a driving power source. It is about improvement. [Prior Art] For example, a wave pump shown in Fig. 8 has already been invented as a wave pump that can supply fluids such as seawater or air by using wave energy and eliminating the need for a driving power source. The conventional wave pump shown in Figure 8 consists of the following mechanism. That is, a float piston 103 built in a lower cylinder 101 so as to be slidable in a reciprocating manner, and a pressure piston 104 built in in an upper cylinder 102 so as to be slidable in a reciprocating manner are connected by a hollow shaft 105 which is open at both ends. pressure piston 1
A suction check valve 106 is provided at the opening on the 04 side end face. Upper cylinder 10 provided on the upper surface of lower cylinder 101
2 has a smaller diameter than the lower cylinder 101, and a discharge check valve 107 is provided on the upper surface. A cylinder float 108 is provided on the outer peripheral surface of the lower cylinder 101.
is attached in an annular shape, and a circular wave stabilizer #yi]09 submerged in the sea is provided on the lower surface of the lower cylinder 101. In addition, the cylinder float 108 and the wave stabilizing plate 10
The outer peripheral surface of the lower circle mlOl between 9 is open,
A plurality of wave gathering plates 110 are attached radially to the outer peripheral surface of the opened lower cylinder 101, and the wave intake port 11
1 is formed. The waves flowing into the lower cylinder 101 from the wave intake port 111 are transferred to the float piston 103 built in the lower cylinder 101.
Gives vertical motion to . When the float piston 103 rises, the float piston 10
The pressure piston 104, which is interlocked with the upper cylinder 102, also moves upward in the upper cylinder 102, the suction check valve 106 provided in the pressure piston 104 closes, and the discharge check valve 107 provided in the upper surface of the upper cylinder 102 closes. is open and the upper cylinder 102
The water inside is discharged through the discharge check valve 107 which is opened by the rising pressure piston 104. When the float piston 103 descends, the pressure piston 104 of the upper cylinder 102 goes into an expansion stroke, the discharge check valve 107 closes, the suction check valve 106 opens, and the inside of the upper cylinder 102 becomes under negative pressure. Therefore, a portion of the seawater flowing into the lower cylinder 101 and imparting vertical motion to the float piston 103 is sucked up into the upper cylinder 102 through the hollow shaft 105. In this way, conventional wave pumps have a so-called intermittent supply system, in which suction and discharge of fluids such as seawater are repeated alternately. [Problems to be Solved by the Invention] However, as mentioned above, conventional wave pumps are of a so-called intermittent supply system, so they cannot continuously supply fluids such as seawater, and have the disadvantage of a low supply flow rate. ．． Additionally, water leaks between the piston and cylinder during the pressure stroke, and air leaks into the cylinder during the suction stroke, reducing pump efficiency. This invention was devised to solve the problems mentioned above, and its common purpose is to continuously supply fluids such as turbid water and air. The purpose of this invention is to provide a floating wave pump that doubles the efficiency of the pump and has a simple piston seal structure. Another object of the invention as set forth in claim 1 or 6 is to provide a floating wave pump that can simplify the manufacture of a guide in which a float piston is installed. Furthermore, another object of the invention as set forth in claims 2, 3, and 9 is to provide a floating wave pump that has improved stability against waves and improved maintenance, inspection, and wind resistance measures of the pump. ．． [Means for solving the problem] In order to achieve the above object, the invention described in claim 1 is as follows:
A float piston on the water surface that follows wave motion is arranged reciprocally within a guide having a wave intake, the sides of the guide are formed by a plurality of pillars, and a cylinder chamber is provided above the guide. A float piston that follows wave motion is interlocked and connected to a cylinder piston, and the cylinder piston that moves in conjunction with the fluctuation of the float piston is slidably arranged in a sealed cylinder chamber, and the sliding cylinder piston connects the cylinder chamber to one chamber side. One end of the first suction passage through which external fluid flows into one chamber and one end of the bypass passage through which fluid within one chamber is discharged to the outside are connected to one side of the cylinder chamber which is divided into two. One end of the second suction passage through which external fluid flows into the other chamber and one end of the discharge passage through which fluid within the other chamber is discharged to the outside are connected to the other chamber side of the cylinder chamber. A stop valve is provided in each of the first suction passage, the bypass passage, the second suction passage, and the discharge passage. Here, in the invention according to claim 1, it is preferable that the other end of the bypass passage is connected to the discharge passage, and that the check valves provided in the bypass passage and the discharge passage are the same. Further, it is preferable that the second suction passage is formed within a member that connects the float piston and the cylinder piston. Furthermore, it is preferable that a vertical motion prevention member and a rolling prevention member be provided below the guide. Furthermore, the pillars and submerged structures forming the sides of the guide are hollow, and the buoyancy of the wave pump can be adjusted by adjusting the inflow and outflow of seawater into the hollow pillars and submerged structures. It is preferable that In addition, the invention as claimed in claim 2 is such that a float piston on the water surface that follows wave motion is arranged to be able to slide back and forth in a cylindrical guide having a wave intake, and a float is provided on each peripheral part of the guide. , a cylinder chamber is provided above the guide,
A float piston that follows wave motion is interlocked and connected to a cylinder piston, and the cylinder piston that moves in conjunction with the fluctuation of the float piston is slidably arranged in a sealed cylinder chamber, and the sliding cylinder piston connects the cylinder chamber to one chamber side. One end of the first suction passage through which external fluid flows into one chamber and one end of the bypass passage through which fluid within one chamber is discharged to the outside are connected to one side of the cylinder chamber which is divided into two. One end of the second suction passage through which external fluid flows into the other chamber and one end of the discharge passage through which fluid within the other chamber is discharged to the outside are connected to the other chamber side of the cylinder chamber. The check valve is connected to the first suction passage, the bypass passage, and the second suction passage.
It consists of a structure installed in the suction passage and the discharge passage. Here, in the invention described in claim 2, it is preferable that the other end of the bypass passage is connected to the discharge passage, and that the check valves provided in the bypass passage and the discharge passage are the same. Further, it is preferable that the second suction passage is formed within a member that connects the float piston and the cylinder piston. Furthermore, it is preferable that a vertical motion prevention member and a rolling prevention member be provided below the guide. Furthermore, the invention as set forth in claim 3 provides a structure in which a float piston on the water surface that follows wave motion is arranged in a cylindrical guide having a wave intake in a reciprocating manner, and a cylinder chamber is provided above the guide. A float piston that follows wave motion is interlocked and connected to a cylinder piston, and the cylinder piston that moves in conjunction with the fluctuation of the float piston is slidably arranged in a sealed cylinder chamber, and the sliding cylinder piston connects the cylinder chamber to one chamber side. One end of the first suction passage through which external fluid flows into one chamber and one end of the bypass passage through which fluid within one chamber is discharged to the outside are connected to one side of the cylinder chamber which is divided into two. One end of the second suction passage through which external fluid flows into the other chamber and one end of the discharge passage through which fluid within the other chamber is discharged to the outside are connected to the other chamber side of the cylinder chamber. A stop valve is provided in each of the first suction passage, the bypass passage, the second suction passage, and the discharge passage, and the wave pump main body is held movable up and down at a very slow speed similar to the ebb and flow speed of the water surface. Here, the invention according to claim 3 provides bypass i! ! It is preferable that the other end of the passage is connected to the discharge passage, and that the check valves provided in the bypass passage and the discharge passage are the same. Also, the second inhalation ia! Preferably, the passage is formed in the member connecting the float piston and the cylinder piston.
Furthermore, it is preferable that a vertical motion prevention member and a rolling prevention member be provided below the guide. Furthermore, the invention of claim 6 is such that a float piston on the water surface that follows wave motion is arranged reciprocally within a guide having a wave intake port, and the side of the guide is formed of a plurality of pillars. A cylinder chamber is provided below the float piston, the float piston that follows the wave motion and the cylinder piston are connected by a hollow shaft, a discharge passage is provided inside the hollow shaft, and the cylinder piston that moves in conjunction with the fluctuation of the float piston is sealed. The cylinder chamber is slidably arranged in the cylinder chamber, and the cylinder chamber is divided into one chamber side and the other chamber side by a sliding cylinder piston. A structure comprising an inlet and an outlet through which the fluid in each chamber flows out into a discharge passage, and a check valve that opens downstream is provided at each inlet and outlet, as claimed in claim 1. In the invention described in item 7, it is preferable that the check valves provided at each outlet are the same. Further, it is preferable that a vertical motion prevention body and a lateral vibration prevention body be provided below the guide guide. Furthermore, the pillars and submerged structures forming the sides of the guide are hollow, and the buoyancy of the wave pump can be adjusted by adjusting the inflow and outflow of seawater into the hollow pillars and submerged structures. is preferable. C) This invention having the structure described above operates as follows. In other words, it functions so that fluid can be introduced and pumped simultaneously on both sides of the reciprocating cylinder piston, and since both sides of the cylinder piston are filled with fluid, the relationship between the cylinder piston and the cylinder is There is little leakage from gaps, and it works to easily seal the cylinder piston. Further, the inventions described in claims 1 and 6 operate so that the guide can be easily manufactured by forming the side portion of the guide with a plurality of pillars. Furthermore, the invention according to claim 2 works to increase stability against waves by providing an annular float on the side circumference of the guide. Furthermore, the invention according to claim 3 prevents vertical movement, rotation around the center of gravity, and lateral sway in response to waves, by means of a horizontal movement that holds the wave pump main body so that it can be raised and lowered at a very slow speed similar to the ebb and flow speed of the water surface. It acts to prevent. [Example] The present invention will be described in more detail below based on the example shown in the drawings. 1 First Embodiment 1 Here, FIG. 1 is a perspective view of a floating wave pump, and FIG. 2 is a cross-sectional view of a guide of the floating wave pump. In the figure, a floating wave pump 1 for continuous supply includes a floating body guide 2 floating on the sea surface, a float piston 3 reciprocably arranged within the floating body guide 2, and a floating body guide 2 provided above the floating body guide 2. It consists of a cylinder chamber 4, a cylinder piston 5 slidably disposed within the cylinder chamber 4, and the like. The side part of the floating body guide 2 is formed of a plurality of (four in the drawing) pillars 2a, each pillar 2a is attached in the vertical direction, and the inner side surrounded by these four pillars 2a is A float piston 3 is arranged so as to be able to freely reciprocate. The float piston 3 floats due to the buoyancy of seawater and moves up and down following the wave motion. The upper ends of these four pillars 2a are connected to the upper guide connecting plate 2b, and the lower ends thereof are connected to a vertical movement prevention body l4, which will be described later. Furthermore, each pillar 2a
The middle part is connected by four floats 2c. The pedestal 2a, the float 2C, and the submerged structures described below, such as the vertical motion prevention body 14, the lateral vibration prevention body 15, and the secondary vertical motion prevention plate and weight 16, are hollow inside.
The stability of the floating wave pump 1 is maintained by adjusting the height of the center of buoyancy of the floating wave pump 1 while injecting or discharging seawater into or out of the interior of the pump using a pump (not shown) as necessary. It is designed to allow floating and sinking.
Note that the above float 2C also functions to prevent overflow of waves, and the upper surface of the float piston 3 receives pressure resistance from waves when rising, causing the float piston 3 to
This prevents the upward force from weakening. The cylinder chamber 4 and floating body guide 2 are connected to the upper guide connecting plate 2.
A communicating hole 2d is formed in the center of the upper guide connecting plate 2b, and a hollow shaft 6 is attached so as to be able to slide and reciprocate through this communicating hole 2d. A bearing seal 2e is provided around the periphery of the communication hole 2d, and the hollow shaft 6 is slidably supported by this bearing seal 2e. The cylinder piston 5 is connected to the upper end of this hollow shaft 6, and the float piston 3 is connected to the lower end.
The cylinder piston 5 and the float piston 3 are integrally connected by a hollow shaft 6. The hollow shaft 6 is hollow inside and both ends thereof are open, and the cylinder chamber 4 and the float piston 3 in the floating body guide 2 are passed through the hollow shaft 6.
The lower water surface of is in communication state. Cylinder chamber 4 of hollow shaft 6
A check valve 7 that opens to the inside of the cylinder chamber 4 is attached to the opening of the cylinder chamber 4. This check valve 7 is installed so that it closes when the inside of the cylinder chamber 4 is in a compressed state and opens when the inside of the cylinder chamber 4 is in a negative pressure state. The inside of the cylinder chamber 4 is divided into two parts by a cylinder piston 5 that moves vertically, and the center of the upper end surface of the upper cylinder chamber 4a, which is the upper side of the cylinder piston 5, is open and connected to the discharge pipe 8. ing. A check valve 9 that opens toward the discharge pipe 8 is attached to this opening. The discharge pipe 8 serves as a passageway for discharging seawater, air, etc. sucked in by the pumping action of the floating wave pump l for continuous supply. Furthermore, an inlet of the bypass pipe 10 and an outlet of the suction pipe 11 are opened on both sides of the lower end of the side surface of the lower cylinder chamber 4b, which is the lower side of the cylinder piston 5. The bypass pipe IO is a passage connecting the lower cylinder chamber 4b and the discharge pipe 8, and the outlet of the bypass pipe IO is connected to the discharge pipe 8. The above-mentioned check valve 9, which opens toward the discharge pipe 8, is attached to this outlet. This check valve 9 serves to open and close the discharge pipe 8 and the bypass pipe IO, and to open and close the discharge pipe 8 and the upper cylinder chamber 4a. When the discharge pipe 8 and the bypass pipe 10 are open, the discharge pipe 8 and the upper cylinder chamber 10 are opened and closed. 4a is closed, and when the discharge pipe 8 and the bypass pipe 10 are closed, the discharge pipe 8 and the upper cylinder chamber 4 are closed.
It is installed so that a is open. The suction pipe l1 serves as an inflow passage for seawater, air, etc. sucked in by the pump action, and a check valve l2 that opens toward the lower cylinder chamber 4b is also installed at the outlet of this pipe. A flexible suction vibrator 13 whose tip side is in direct contact with seawater or air is connected to the suction pipe l1. The vertical motion prevention body l4 to which the lower end of the pillar 2a is connected is
This is a device that acts as a resistance against the vertical spreading of the floating wave pump l, and includes two boat-shaped structures 14a to which the lower ends of the pillars 2a are directly connected, and a prevention Fi that connects the left and right boat-shaped structures 14a. ．． 14b, but it may also be formed from an integral circular structure. Further, a roll prevention body 15 is attached below the vertical movement prevention body l4. It is being done. The anti-rolling body 15 is a device that acts as a resistor against the swinging motion (movement in the left-right and front-back directions) of the floating wave pump 1, and preventive plates are installed radially. Furthermore, a secondary vertical motion prevention plate and a weight l6 are provided at the lower end of the roll prevention body l5. The above-mentioned vertical movement prevention body 14, lateral vibration prevention body 15, and secondary vertical movement prevention plate and weight 16, which are submerged structures, are hollow structures with partition walls, and allow water to enter and exit. Next, the effects based on the structure of the first embodiment described above will be explained below. Wave energy is transferred from between each pillar 2a to the floating body guide 2.
It collides with the float piston 3, which is inserted into the floating body guide 2 so as to be able to reciprocate, and at this time, the wave height and kinetic energy are converted into axial movement of the float piston 3, and the float piston 3 to the cylinder chamber 4 side. The cylinder piston 5, which is connected to the float piston 3 by a hollow shaft 6, is moved in a direction to compress the inside of the upper cylinder chamber 4a of the cylinder chamber 4 by the float piston 3, which is pressed and moves (upward in the drawing). When the cylinder piston 5 moves upward, the inside of the upper cylinder chamber 4a becomes the compression side, the check valve 7 closes, and the discharge pipe 8
The check valve 9 opens, the upper cylinder chamber 4a and the discharge pipe 8 are brought into communication, and the water in the upper cylinder chamber 4a is forced into the discharge pipe 8 and discharged from the discharge pipe 8 to the outside. At this time,
The check valve 9, which opens the discharge pipe 8 and the upper cylinder chamber 4a, closes the bypass pipe 10 and the discharge pipe 8, so that the discharge pipe 8 is forced to flow from the upper cylinder chamber 4a to the discharge pipe 8. Part of the water is prevented from flowing back into the bypass pipe 10. When the upper cylinder chamber 4a61 is in the compression process, the lower cylinder chamber 4b side is in the expansion process and becomes a negative pressure state. is sucked into the lower cylinder chamber 4b, which is now in a negative pressure state. Next, when the waves recede and the seawater in the floating body guide 2 begins to return to the sea, the cylinder piston 5 and the float piston 3 descend within the cylinder chamber 4 and the floating body guide 2, respectively, due to their own weight. When the cylinder piston 5 descends, the upper cylinder chamber 4a undergoes an expansion process and becomes a negative pressure state, and the check valve 9 that communicates the discharge pipe 8 and the upper cylinder chamber 4a closes. opens. At this time, when the check valve 9 closes the discharge pipe 8 and the upper cylinder chamber 4a, the bypass pipe IO and the discharge pipe 8 are opened. When the check valve 7 opens, the upper cylinder chamber 4a is opened via the hollow shaft 6.
and the lower water surface of the float piston 3 in the floating body guide 2 are in communication. Since the inside of the upper cylinder chamber 4a is in a negative pressure state, the seawater inside the floating body guide 2 is sucked and flows into the upper cylinder chamber 4a through the hollow shaft 6. On the other hand, the lower cylinder chamber 4b side is in the compression process, the check valve l2 is closed, the check valve 9 that opens and closes the bypass pipe 10 and the discharge pipe 8 is opened as described above, and the seawater in the lower cylinder chamber 4b is drained from the bypass pipe. 10 to the discharge pipe 8.
is discharged to the outside. In this way, the upper cylinder chamber 4
Using the expansion negative pressure in a, the discharge pipe 8 and the upper cylinder chamber 4a' can be closed, and the discharge pipe 8 and the bypass pipe 10 can be opened. As can be understood from the above explanation, the compression and expansion caused by the reciprocating motion of the cylinder piston 5 are simultaneously used to simultaneously pump seawater and suction, and this process is repeated, so the up and down reciprocation of the cylinder piston 5 In either process, seawater can be pumped and discharged from the discharge pipe 8, making it possible to continuously supply seawater and doubling the flow rate characteristics. Next, we will explain the stability of the floating wave pump 1 in waves. The motion of the wave pump 1 as a floating body is broken down into vertical, horizontal, and longitudinal motion based on the circular motion of waves. In order to prevent vertical movement of the floating body, if a submerged vertical movement prevention body l4 with an appropriate area is set parallel to the horizontal sea surface, vertical movement can be prevented against high frequency waves. can. , For low-frequency undulations, the vertical movement becomes large, and it is difficult to completely prevent this. in the end,
Since it is moving in a circle around the center of gravity as a rigid body, it becomes a head-swinging motion, and the same tendency occurs in forward-backward and left-right motion. In order to prevent this head swinging motion, it is necessary to install a plurality of lateral spread preventive bodies 15 radially, such as 15 in FIG. 1, which provide flow resistance against movement in that direction. Good. In this way, circular movement around the center of gravity of the floating wave pump l is prevented, and the discharge pipe 8
The head movement of the patient decreases. According to experiments, when the area of the vertical motion prevention body 14 is reduced during submersion, head swinging motion tends to increase rather than vertical motion. To prevent this, as shown in the third embodiment described later (see Fig. 4), the area of the roll prevention body 33 is increased, and at the same time, the area of the lower vertical movement prevention body 34 during submergence is also increased. In this way, two-stage resistance is provided with the upper vertical movement prevention body 32. In this way, attaching the resistor at a position far away from the center of gravity of the floating body will prevent the
The l■tion becomes smaller as it gets deeper, so the movement prevention effect increases. 1. Second Embodiment 1. Here, FIG. 3 is a side sectional view of a floating wave pump. The second embodiment differs from the structure of the first embodiment in the structure of the vertical, horizontal, and longitudinal vibration prevention mechanisms of the floating body guide 2 and the wave pump 1, and other structures or the first embodiment are different from those of the first embodiment. Since the structure is the same as that of the embodiment, the same components are given the same reference numerals and their explanation will be omitted. In the figure, a caisson, for example, is used as the floating body guide 20. A float piston 3 is inserted into a floating guide 20 made of a caisson so as to be able to slide and reciprocate. The lower side surface of the floating body guide 20 is opened to form a wave intake port 20a, so that waves can be taken into the floating body guide 20. Further, a submerged swash plate 20b is provided on the inner bottom side of the floating body guide 20, so that waves can easily flow into the floating body guide 20. On the other hand, a floating body guide 20 consisting of a cylinder chamber 4 and a caisson has a partition wall 2 having an air vent hole 2la.
The above-mentioned communication hole 2d is formed in the center of the partition wall 2l. An annular float 22 is provided on the outer peripheral surface of the floating body guide 20 made of a caisson. Floating bodies that have a large volume in the submerged area have poor stability because the center of buoyancy is lower than the center of gravity, so it is necessary to lower the center of gravity and raise the center of buoyancy as much as possible, but with this annular float 22,
The stability of the floating wave pump 1 can be improved. An upper dispersion prevention body 23 and a lower dispersion prevention body 24 are provided below the floating guide 20 made of a caisson. The lower anti-movement body 24 is provided further below the upper anti-swing body 23, and its size is considerably smaller than the upper anti-swing body 23. The upper rocking prevention body 23 and the lower rocking prevention body 24 are constructed by surrounding a flow resistance plate 23a24a perpendicular to the periphery of a horizontal flat plate. Seawater within the range surrounded by the horizontal flat plate and the flow resistance plates 23a, 24a moves as if they were one body with the upper spread prevention body 23 and the lower spread prevention body 24, so the horizontal flat plate and the flow resistance plates 23a, The seawater within the area surrounded by 24a also acts as a flow resistance to the movement of the floating wave pump 1 (7), and the oscillation can be reduced. The operation based on the horizontal force of the second embodiment is substantially the same as the operation of the first embodiment, so a description thereof will be omitted. 1. Third Embodiment 1 Here, FIG. 4 is a side sectional view of a floating wave pump, and FIG. 5 is a perspective view of the floating wave pump in an installed state. In the third embodiment, the annular float 22 is not included in the structure of the second embodiment, and the floating wave pump l is retained.
Furthermore, the configurations of the vertical, horizontal, and front-back vibration prevention mechanisms of the wave pump 1 are different, and are the same as other structures other than this or the structure of the second embodiment, so the same structures are designated by the same reference numerals. The explanation will be omitted. As shown in the figure, the floating wave pump 1 is held so that it can be raised and lowered at a very slow speed similar to the ebb and flow speed of the water surface. That is, the floating wave pump l is supported so that the lateral force of the held portion becomes zero with respect to its own weight, that is, static load.

For example, as shown on the left side of FIGS. 4 and 5, the circumference of the cylinder chamber 4 is held by a holding material 30. Holding material 3
0 supports the outer periphery of the cylinder chamber 4 by gentle friction. Alternatively, there is also a hold as shown on the right side of Figure 5. In this case, the support rod 3l is extended upward from the outside of the floating body guide 20, and the outer periphery of the upper end of the support rod 31 is supported by friction to hold the support rod 3l to the extent that it can move at a very slow speed. . By holding the floating wave pump l in this way, it is possible to prevent vertical movement as well as head swinging, and while the same characteristics as when it is fixed are obtained, there is also the problem of support during tides. It can be solved. An upper vertical motion prevention body 32 is provided below the floating body guide 20 made of a caisson. Below this upper vertical motion prevention body 32, roll prevention bodies 33 are installed radially. A lower vertical movement prevention body 34 is provided below. Although the lower vertical movement preventer 34 is not as strong as the upper vertical movement preventer 32, it is larger than the outer diameter of the floating body guide 20, and its resistance to vertical movement is large. The upper vertical movement prevention body 32 and the lower vertical movement prevention body 34 are kept away from the floating body. Incidentally, since the floating wave pump 1 is held by a holding member 30 and the like to prevent seeding, these rocking prevention mechanisms may be omitted. The operation based on the configuration of the third embodiment is substantially the same as the operation of the first embodiment, so a description thereof will be omitted. 1. Fourth Embodiment 1 Here, FIG. 6 is a perspective view of a floating wave pump, and FIG. 7 is a side sectional view of the floating wave pump.

The fourth embodiment differs greatly from the first embodiment in that the cylinder chamber 4 is provided below the float piston 3. As a result, the center of buoyancy of the floating wave pump l is upward, and the center of gravity is downward, and the stability of the floating wave pump l is improved compared to the configuration of the first embodiment. Note that the same structures as those in the first embodiment are designated by the same reference numerals, and the explanation thereof will be omitted. That is, the cylinder chamber 4 is provided within the floating body guide 2,
Moreover, it is provided below the float piston 3.
The cylinder piston 5 in the cylinder chamber 4 and the float piston 3 are integrally connected by a hollow shaft 40. The hollow shaft 40 passes through the center of the float piston 3 and extends upward, and the upper end of the hollow shaft 40 passes through a communication hole 2d formed in the center of the upper guide connecting plate 2b and projects above the water surface. The inside of the hollow shaft 40 is hollow and forms a discharge passage 40a, and a flexible drainage pipe 41 is attached to the upper end of the hollow shaft 40. Also, the discharge passage 4 in the hollow shaft 40
The lower end side of 0a is in communication with an upper cylinder chamber 4a and a lower cylinder chamber 4b inside the cylinder chamber 4. A check valve 42 is installed in the communication portion between the lower end of the discharge passage 40a and the upper cylinder chamber 4a and the lower cylinder chamber 4b to open and close both in opposite states. This check valve 42 has an outlet 42a that communicates the upper cylinder chamber 4a with the discharge passage 40a.
When is open, the outlet 42b communicating with the lower cylinder chamber 4b and the discharge passage 40a is closed, and when the outlet 42b is open, the outlet 42b communicating with the lower cylinder chamber 4b and the discharge passage 40a is closed, the upper cylinder chamber 4a and the discharge passage are closed. Outlet 42 communicating with 40a
It is designed to close a. Further, an upper inlet 43 for introducing seawater is formed at the upper end of the upper cylinder chamber 4a, and this upper inlet 43
A check valve 44 is attached to the upper cylinder chamber 4a, which opens when the upper cylinder chamber 4a is expanded and closes when it is compressed. Also, at the lower end of the lower cylinder chamber 4b is a lower inlet 4 for letting seawater flow in.
5 is formed, and a check valve 46 is attached to this lower inlet port 45, which opens the inside of the lower cylinder chamber 4b when it is expanded and closes when it is compressed. The lower end of the pedestal 2a of the floating body guide 2 and the lower end of the cylinder chamber 4 are connected to a vertical movement prevention body 47. The vertical motion prevention body 47 is a device that acts as a resistance against vertical shaking of the floating wave pump 1, and is hollow inside and communicates with the pillar 2a, which is also hollow inside, through a communication hole 47a. are doing.

Further, a roll prevention body 48 is provided on the upper surface of the vertical movement prevention body 47 in the lower part of the floating body guide 2. When the anti-rolling body 48 prevents a hollow object, the inside of the anti-rolling body 48 is in communication with the inside of the vertical movement preventing body 47. The vertical motion prevention body 47 and the lateral vibration prevention body 48 are submerged structures, and water can enter and exit the hollow pillars 2a and the submerged structure. The periphery of the vertical movement preventive body 47 projects outward in the form of a horizontal flat plate, and a flow resistance plate 47b is vertically formed on the projecting periphery. The vertical motion prevention body 47 and the flow resistance plate 47b exhibit the same functions as in the second embodiment. Next, the operation based on the structure of the fourth embodiment will be explained below. Wave energy is transferred from between each pillar 2a to the floating body guide 2.
The wave enters inside and collides with the float piston 3 which is reciprocatably inserted into the d-body guide 2, and at this time, the wave height and kinetic energy are converted into axial movement of the float piston 3.

When the float piston 3 moves upward due to wave height and kinetic energy, the cylinder piston 5, which is connected to the float piston 3 through the hollow shaft 40, moves in a direction that compresses the inside of the upper cylinder chamber 4a of the cylinder chamber 4. When the cylinder piston 5 moves upward, the inside of the upper cylinder chamber 4a becomes the compression side, and the check valve 44 closes the upper inlet port 4.
3 is closed, and the check valve 42 opens the outflow port 42a to establish communication between the upper cylinder chamber 4a and the discharge passage 40a side. Therefore, the water in the upper cylinder chamber 4a is forced into the discharge passage 40a through the outlet 42a, and is discharged from the discharge passage 40a to the outside through the drainage vibrator 41. At this time, the outlet 42
On the other hand, the check valve 42 which is in the open state a has the outlet port 4
2b and discharge passage 40a from upper cylinder chamber 4a.
This prevents a portion of the water pumped into the lower cylinder chamber 4b from flowing back into the lower cylinder chamber 4b. When the upper cylinder chamber 4a side is in the compression process, the lower cylinder chamber 4b side is in the expansion process and becomes a negative pressure state. Seawater is sucked into the lower cylinder chamber 4b under negative pressure. Next, when the waves recede and the seawater in the floating body guide 2 begins to return to the sea, the cylinder piston 5 and the float piston 3 descend within the cylinder chamber 4 and the floating body guide 2, respectively, due to their own weight. When the cylinder piston 5 descends, the upper cylinder chamber 4a undergoes an expansion process and becomes a negative pressure state, the check valve 42 that opened the outlet 42a closes, and the check valve 44 of the upper inlet 43 opens. Seawater flows into the upper cylinder chamber 4a from the upper inlet 43. At this time, when the check valve 42 closes the outlet 42a between the discharge passage 40a and the upper cylinder chamber 4a, the outlet 42b between the discharge passage 40a and the lower cylinder chamber 4b is opened. On the other hand, the lower cylinder chamber 4b side is in the compression process, the check valve 46 of the lower inlet 45 is closed, and the discharge passage 40 is closed as described above.
The check valve 42 that opens and closes the outlet 42b of the lower cylinder chamber 4b is opened, and the seawater in the lower cylinder chamber 4b is discharged from the outlet 4.
2b to the discharge passage 40a, and is discharged to the outside from the drainage pipe 4l through the discharge passage 40a. It should be noted that this invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the invention. [Effects of the Invention] As is clear from the above description, according to the floating wave pump according to the present invention, during the reciprocating motion of the cylinder piston in the cylinder chamber, the compression stroke and the expansion stroke are always performed by the cylinders on both sides of the cylinder piston. By taking advantage of the fact that they are simultaneously delivered indoors, the compression side is used for discharging fluid and the expansion side is used for suctioning fluid, which allows fluid supply and suction to be performed at the same time. It is possible to continue supplying fluid continuously, and the flow rate characteristics can be doubled. Moreover, since the compression side and expansion side of the cylinder piston are always filled with fluid, there is little fluid leakage, which makes sealing the cylinder piston extremely easy. In conjunction with these effects, according to the invention recited in claim 1, since the side portion of the guide is formed by a plurality of pillars, sliding performance with the float piston is taken into account as in the case of a cylindrical structure. There is no need to manufacture the product using a separate sheet, making it very easy to manufacture. In addition, floating bodies with a large volume of submerged parts,
Since the center of buoyancy is lower than the center of gravity, stability deteriorates, so it is necessary to lower the center of gravity as much as possible and raise the center of buoyancy. Since the float is located above the center of gravity and the center of buoyancy is raised, the stability of the floating wave pump against waves can be increased. Similarly, according to the third aspect of the invention, the stability of the wave pump against waves is increased by holding the floating wave pump body so that it can be raised and lowered at a very slow speed similar to the ebb and flow speed of the water surface. In addition to being able to follow the ebb and flow of the water surface, it is possible to always obtain stable wave energy. Further, according to the invention set forth in claim 6, it has the same effect as the invention set forth in claim 1, and further,
Since the cylinder chamber is underwater, the water inside is difficult to leak.
Moreover, since the center of gravity of the floating wave pump is lowered and the center of buoyancy is raised, static and dynamic wave response characteristics can be improved. Furthermore, centering of the hollow shaft diameter is improved. Furthermore, according to the invention of claim 4, 5 or 8, the structure of the floating wave pump can be partially simplified. According to the invention set forth in claim 7, when the vertical motion prevention body and the rolling prevention body are provided below the guide, it is possible to contribute to the stability of the floating wave pump. According to the invention described in claim 9, it is possible to adjust the height of the center of buoyancy of the floating wave pump, and at the same time, it is possible to adjust the height of the center of buoyancy of the floating wave pump, and at the same time, it is possible to improve the operation and maintenance of the floating wave pump, such as evacuation from submersion during a typhoon, maintenance, and landing on land during inspection. You can contribute.

[Brief explanation of the drawing]

1 to 7 show embodiments of the floating wave pump according to the present invention, FIG. 1 is a perspective view of the floating wave pump of the first embodiment, and FIG. 2 is a perspective view of the floating wave pump of the first embodiment. FIG. 2 is a cross-sectional view of a guide for an example floating wave pump. Figure 3 is a side sectional view of the floating wave pump of the second embodiment. Fig. 4 is a side sectional view of the floating wave pump of the third embodiment, and Fig. 5 is a side sectional view of the floating wave pump of the third embodiment.
FIG. 2 is a perspective view of the installed state of the floating wave pump of the example.
FIG. 6 is a perspective view of the floating wave pump of the fourth embodiment, and FIG.
The figure is a side sectional view of the floating wave pump of the fourth embodiment. Figure 8 is a partially cutaway perspective view of a conventional wave pump. [Explanation of symbols] 1: Floating body wave pump 2: Floating body guide 2a; Pillar 2b = Upper guide connecting plate 2c: Float 2d: Communication hole 2e: Bearing seal 3: Float piston 4: Cylinder chamber 4a: Upper cylinder chamber 4b: Lower cylinder chamber 5: Cylinder piston 6: Hollow shaft
7: Check valve 8: Discharge pipe 9: Check valve lO: Bypass pipe l1: Suction pipe 12: Check valve
l3: Suction vibration l4: Vertical movement prevention body l
4a: Ship-shaped structure 14b = Temporary prevention 15: Rolling prevention body 16: Secondary vertical movement prevention plate and weight 20: Guide guide 20a: Wave intake port 20b:
Submerged swash plate 2l: Partition wall 21a: Air vent hole
22: IIl-shaped float 23: Upper rocking prevention body
23a: Flow resistance plate 24: Lower rocking prevention body 24a: Flow resistance plate 30: Holding material 3l: Support rod 32:
Upper vertical motion prevention body 33: Rolling prevention body 34: Lower vertical motion prevention body 40: Hollow shaft 40a: Discharge passage 41: Drain pipe 42: Check valve 42a: Outlet 4
2b: Outlet 43: Upper inlet 44: Check valve 4
5: Lower inlet 46: Check valve 47: Vertical movement prevention body 47a: Communication hole 47b: Flow resistance plate 48
: Rolling prevention body Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 6

Claims (1)

[Claims] 1. A float piston on the water surface that follows wave motion is arranged so as to be able to reciprocate within a guide having a wave intake, and the sides and portions of the guide are formed by a plurality of pillars, and the guide A cylinder chamber is provided above the guide, a float piston that follows wave motion is interlocked and connected to the cylinder piston, and the cylinder piston that moves in conjunction with the fluctuation of the float piston is slidably arranged in the sealed cylinder chamber. The piston divides the cylinder chamber into one side and the other side, and one end of the first suction passage, which allows external fluid to flow into one chamber, and one end of the first suction passage, which allows external fluid to flow into one chamber, and one end of the first suction passage, which allows external fluid to flow into one chamber, and one end of the first suction passage, which allows external fluid to flow into one chamber, into one side of the cylinder chamber, which is divided into two. One end of a second suction passage that discharges external fluid into the other chamber is connected to the other chamber side of the cylinder chamber, and one end of a second suction passage that discharges fluid from the other chamber to the outside is connected to the other chamber side of the cylinder chamber. A floating wave pump characterized in that a first suction passage, a bypass passage, a second suction passage, and a discharge passage are provided with check valves that are connected to each other and open downstream. 2. A float piston on the water surface that follows wave motion is arranged so as to be able to slide back and forth in a cylindrical guide having a wave intake, a float is provided on the side periphery of the guide, and a cylinder chamber is installed above the guide. A float piston that follows wave motion is interlocked and connected to a cylinder piston, and the cylinder piston that moves in conjunction with the fluctuation of the float piston is slidably arranged in a sealed cylinder chamber. The cylinder chamber is divided into a chamber side and another chamber side, and one end of the first suction passageway that allows external fluid to flow into one chamber and a bypass passageway that discharges the fluid inside one chamber to the outside are installed on one side of the cylinder chamber that is divided into two. One end is connected to the other chamber side of the cylinder chamber, and a second tube is connected to the other chamber side of the cylinder chamber to allow external fluid to flow into the other chamber.
One end of the suction passage and one end of the discharge passage for discharging the fluid in the other chamber to the outside are connected to each other, and a check valve that opens downstream is provided in each of the first suction passage, the bypass passage, the second suction passage, and the discharge passage. A floating wave pump characterized by: 3. A float piston on the water surface that follows wave motion is arranged so as to be able to slide back and forth in a cylindrical guide having a wave intake, a cylinder chamber is provided above the guide, and the float piston that follows wave motion is placed in the cylinder. A cylinder piston that is interlocked with the piston and moves in conjunction with the movement of the float piston is slidably arranged in a sealed cylinder chamber, and the sliding cylinder piston divides the cylinder chamber into one chamber side and another chamber side. On one side of the cylinder chamber, which is divided into
One end of the first suction passage through which external fluid flows into one chamber and one end of the bypass passage through which fluid within one chamber is discharged to the outside are connected to each other, and external fluid flows into the other chamber side of the cylinder chamber. One end of the second suction passage that discharges the fluid in the other chamber to the outside is connected to one end of the discharge passage that discharges the fluid in the other chamber to the outside, and a check valve that opens downstream is connected to the first suction passage, the bypass passage, the second suction passage, and the discharge passage. 1. A floating wave pump characterized in that the wave pump body is held movable up and down at a very slow speed comparable to the ebb and flow speed of the water surface. 4. Connect the other end of the bypass passage to the discharge passage, and
4. The floating wave pump according to claim 1, wherein the check valves provided in the bypass passage and the discharge passage are the same. 5. The floating wave pump according to claim 1, 2 or 3, wherein the second suction passage is formed in a member connecting the float piston and the cylinder piston. 6. A float piston on the water surface that follows wave motion is arranged so as to be able to reciprocate within a guide having a wave intake, the sides of the guide are formed by a plurality of pillars, and a cylinder chamber is formed below the float piston. The float piston and cylinder piston, which follow the wave motion, are connected by a hollow shaft, a discharge passage is provided inside the hollow shaft, and the cylinder piston, which moves in conjunction with the fluctuations of the float piston, is slidably arranged in a sealed cylinder chamber. The cylinder chamber is divided into one chamber side and the other chamber side by a sliding cylinder piston, and each cylinder chamber is divided into two, each having an inlet for allowing external fluid to flow into each chamber, and an inlet for discharging the fluid inside each chamber. 1. A floating wave pump characterized in that each of the inflow and outflow ports is provided with an outflow port that flows out into a passage, and a check valve that opens downstream is provided at each of the inflow and outflow ports. 7. The floating wave pump according to claim 1, 2, 3 or 6, wherein a vertical movement prevention body and a rolling prevention body are provided below the guide. 8. Claim 6, wherein the check valves provided at each outlet are the same.
The floating wave pump described. 9. The pedestal and submerged structure forming the side part of the guide are hollow, and the buoyancy of the wave pump can be adjusted by adjusting the entry and exit of seawater into the hollow pedestal and submerged structure. Floating wave pump according to item 1 or 6.