JPH0618667U - Wave power air supply device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an air supply device that can be driven by natural force without using power such as electric power. [Structure] Surrounding a vertically arranged guide member 13 inside the buoy body 1 moored to the seabed 15 so that the submergence depth changes depending on the sea level, and a large-diameter first cylinder 5 is provided at the bottom.
, A small diameter second cylinder 7 is arranged in the upper part, a first piston 8 is provided in the first cylinder 5, and a second piston 10 connected to the first piston 8 is provided in the second cylinder 7. The first cylinder 5 is slidably provided with a seawater inlet 3 at a lower portion and an air and seawater outlet 4 at an upper portion.
Furthermore, a wave force type air supply device in which compressed air accumulated on the top of the second piston 10 is sent out via a check valve 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, the first piston is moved up and down by the wave force, and the second piston is moved up and down accordingly, and the air is compressed by the second piston and transferred to the sea bottom in a relatively shallow sea area. It relates to wave-powered air supply equipment used to purify marine sediments such as.

[0002]

[Prior art]

 Recently, coastal development has been actively carried out, and one of them is, for example, the cultivation of fish and shellfish in a relatively shallow sea area of about 5 to 10 m. By the way, in such shallow waters, it is often located in the downstream part of rivers, and as a result, deposits such as sludge are often present on the seabed due to industrial wastewater, which causes problems in the development. Under these circumstances, it is necessary to purify the seabed in this area. As one of the purification methods, it is possible to supply air to the seabed, promote the activity of microorganisms, and purify the seabed with the microorganisms.

[0003]

[Problems to be solved by the device]

 However, it is generally considered to use a compressor when supplying air to the seabed.In this case, air is supplied from the compressor installed on land and continuously to the sea area for a long period of time. Equipment is required. For that reason, there is a problem that a large-scale device is required, a large amount of construction fund is required, and an operating cost is enormous.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the problems of the above-mentioned conventional device, and is arranged in the vertical direction inside the buoy body moored on the seabed so that the submersion depth changes depending on the sea level. A first cylinder having a large diameter is arranged at a lower part of the guide member, a second cylinder having a smaller diameter is arranged at an upper part thereof, and a first piston is connected to the first piston in the first cylinder. Two pistons are slidably provided in the second cylinder, a seawater inlet is provided at a lower portion of the first cylinder, and an air and seawater outlet is provided at an upper portion of the second cylinder. (EN) Provided is a wave power type air supply device configured to deliver compressed air accumulated at the top through a check valve.

[0005]

[Work]

 The first cylinder into which seawater flows and the second cylinder into which air flows are installed vertically inside the buoy body that is anchored so that it does not move up and down due to fluctuations in the sea surface due to wave forces, and two pistons interlock with these. When the sea level rises due to wave force, seawater flows into the first cylinder and pushes up the first piston, and the second piston integrated with this rises. Then, as the second piston slides, the air in the second cylinder is compressed and the air is supplied to the seabed through the air supply pipe. Therefore, it is possible to supply air to the sea floor by wave power without requiring a special power source.

[0006]

【Example】

 An embodiment of a wave power type seabed air supply device according to the present invention will be described below with reference to FIGS. 1 to 4. FIG. 1 is a side sectional view of a wave-powered seabed air supply device of the present invention, FIG. 2 is a plan view, and 1 is a buoy body, which is a buoyancy chamber 2 at the bottom and a first buoyancy chamber 2 above it. The cylinder 5 is provided, and the second cylinder 7 is formed in two stages above the first cylinder 5. The first cylinder 5 is provided with a seawater inflow port 3 at the bottom and an air port 4 at the top, and the first piston 8 is housed therein.

A second cylinder 7 having a diameter smaller than that of the first cylinder 5 is arranged above the first cylinder 5, and an air suction port 6 is provided at the top of the second cylinder 7. An air passage 4 is arranged outside the second cylinder 7 so as to communicate with the first cylinder 5. An air supply pipe 13 is arranged in the vertical direction in the center of the buoy body 1, a second piston 10 is provided above the cylinder 11 fitted into the air supply pipe 13, and a first piston is provided below the cylinder 11. 8 is fixed, and when the first piston 8 moves along with the movement of the sea surface, the second piston 10 is interlocked and the compressed air in the second cylinder 7 is transferred by the air supply pipe 13. The air supply pipe 13 constitutes a guide member for the first piston 8 and the second piston 10.

Further, a vacuum valve 12 is provided at the air intake port 6 provided at the upper part of the second cylinder 7, and the second piston 10 descends to depressurize the inside of the second cylinder 7. If so, the air is operated to flow into the second cylinder 7. Further, a check valve 14 is provided at the upper end of the air supply pipe 13 so that the air pressurized in the second cylinder 7 is supplied into the air supply pipe 13 and near the seabed 15. It is designed to be transferred to.

As shown in FIG. 1, the buoyancy chamber 2 formed in the lower portion of the buoy body 1 configured as described above has a buoyancy force F so that the sea surface WL is at least slightly smaller than the seawater inlet 3 of the first cylinder 5. It is configured to have buoyancy so that it is located above. Next, the operation of the device according to the present invention will be described. The buoy body 1 is moored by a mooring line 16 so that the lowest sea level WL is located slightly above the seawater inlet 3 and a tension F ′ acts on it. In the wave-powered seabed air supply device having such a configuration, when the wave force acts on the buoy body 1 and the sea level WL rises to WL 'as shown in FIG. 3, the first cylinder 5 The seawater flows into the inside of the seawater inlet 3 which is opened at the lower part of the upper part, pushes up the first piston 8 and raises the second piston 10 connected thereto.

At this time, the air in the first cylinder 5 is discharged to the atmosphere via the air port 4 formed along the second cylinder 7. If seawater flows into the upper part of the first piston 8 due to a leak or the like, the seawater is discharged from the seawater discharge port 9 so that the first piston 8 does not become heavy. On the other hand, the second piston 10 rises together with the first piston 8 to increase the pressure of the air in the second cylinder 7, open the check valve 14 and supply the air to the seabed 15 via the air supply pipe 13. Will be.

When the sea surface WL ′ which has been rising as shown in FIG. 3 is lowered to WL as shown in FIG. 1, the sea water in the first cylinder 5 has a higher head than the sea surface WL and is discharged from the sea water inlet 3. As a result, the first piston 8 and the second piston 10 both descend. At this time, the vacuum valve 12 is opened and air is supplied into the second cylinder 7. By the way, the area ratio of the first piston 8 and the second piston 10 is selected according to the assumed size of the wave and the depth of the seabed where the air is supplied. For example, a wave of 0.5 m ( When supplying air to a water depth of 10 m with the length of the first cylinder 5), an area ratio of about 20 is required. That is, by making the diameter of the first piston 8 (first cylinder 5) approximately 4.5 times the diameter of the second piston 10 (second cylinder 7), the air can be sent to the desired water depth. Salary is possible.

FIG. 4 shows another embodiment. In this case, the lower end of the air supply pipe 13 is arranged so as to extend into the lower part of the lift pipe 17, and the upper end of the lift pipe 17 is arranged. Is projected above the sea surface WL. In the case of this device, the air pressurized by the second piston 10 is fed into the lift pipe 17 to release air bubbles, thereby lowering the apparent specific gravity in the lift pipe 17 and accordingly the seawater at the bottom. , And spray over the sea surface from the top. By this flow operation of seawater, the seawater in the vicinity of the seafloor 15 is raised to the sea surface, and the oxygen-deficient state in the vicinity of the seafloor and the seawater having no photosynthesis can be sequentially purified.

[0013]

[Effect of device]

 The wave-powered air supply device according to the present invention encloses a vertically arranged guide member inside the buoy body moored on the sea floor so that the submerged depth changes depending on the sea level. A first cylinder is arranged with a small diameter second cylinder in the upper part, and a first piston is connected to the first cylinder, and a second piston connected to the first piston is connected to the second cylinder. Each of them is slidably provided, a seawater inlet is provided at the lower part of the first cylinder, and an air and seawater discharge port is provided at the upper part thereof. Further, compressed air accumulated at the top of the second piston is provided with a check valve. Is configured to be delivered via.

Therefore, since air can be supplied to the sea floor by the action of the two piston devices due to the sea surface displacement caused by the wave force, a special driving force such as a compressor is not required, and therefore the device is simple and the cost is low. Moreover, there is an effect that operating costs are not required because the natural power is used.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of a wave power type air supply device according to the present invention.

FIG. 2 is a plan view of an embodiment of a wave power type air supply device according to the present invention.

FIG. 3 is an operation explanatory view of an embodiment of the wave power type air supply device according to the present invention.

FIG. 4 is a side sectional view showing another embodiment.

[Explanation of symbols]

1 buoy body 2 buoyancy chamber 3 seawater inlet 4
Air port 5 First cylinder 6 Air intake port 7 Second cylinder 8 First piston 9 Seawater discharge port 10 Second piston 11 Cylindrical body 12 Vacuum valve 13 Air supply pipe
14 Check valve 15 Seabed 16 Mooring line 17 Lift pipe.

Claims (2)

[Scope of utility model registration request] 1. A large-diameter first cylinder is enclosed in a lower part of a buoy body surrounded by a guide member moored to the bottom of the sea so that the depth of submersion varies depending on the level of the sea surface.
A second cylinder having a small diameter is arranged in an upper portion, and a first piston is provided in the first cylinder and a second piston connected to the first piston is slidably provided in the second cylinder. , A seawater inlet is provided at a lower portion of the first cylinder, and an air and seawater outlet is provided at an upper portion thereof, and compressed air accumulated at the top of the second piston is delivered through a check valve. Wave power type air supply device configured. 2. The guide member is an air supply pipe for transferring air to the seabed, the air supply pipe is provided with a check valve, and the second cylinder is provided with a vacuum valve. The wave force according to claim 1, wherein when the pressure in the second cylinder is reduced, air is supplied through the vacuum valve, and when the pressure is increased, the air is transferred to the seabed through the check valve. Air supply device.