JPS62121870A - Structure for removing pressure on buoyant body for wave power utilizing power device - Google Patents

Abstract

PURPOSE:To improve the efficiency of movement of a wave-power utilizing power device by removing a buoyant pressure and a lowering pressure which are applied to a power transmitting body due to the vertical movement of a buoyant body, at the midpoint of a load. CONSTITUTION:An elevating zigzag-toothed rack 3 which is placed on the upper half part and a lowering zigzag-toothed rack r which is placed on the lower half part, are formed inside a power transmitting body 2 which is connected to a buoyant body 1, and a ratchet gear 5 for transmitting power is meshed with each of the racks. By this construction, a buoyant pressure and a lowering pressure which are applied to the power transmitting body 2 due to the vertical movement of the buoyant body 1 can be removed at the midpoint of waves, remarkably improving the efficiency of movement of a wave-power utilizing power device.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a wave-based power device configured to move a plurality of floating bodies up and down using the up-and-down motion of waves and convert the up-and-down motion of the floating bodies into rotational motion. The present invention relates to a floating body pressure relief structure for a wave power device that is designed to relieve floating pressure and pulling pressure generated due to movement at an intermediate point.

In recent years, a structure has been created that generates electricity using the energy of the vertical motion of waves on the sea surface. In other words, an air piston chamber is created, which looks like a bucket-shaped object placed over the sea surface. When waves surge, the air in the air piston chamber is compressed. The structure used is such that the air expands when the waves recede, and the movement of the air turns the blades of an air turbine disposed above the air piston chamber to generate electricity. However, because these types of power units use air compression and expansion to turn the air turbine, there is a lot of loss, and even in power generation units, l007, which is used for lighthouses, marker buoys, etc. = Although small front and rear generators were possible, they had not been put to practical use as large-scale power generation equipment.

In order to solve these problems, the applicant has developed a wave power power device using a floating body that directly uses the energy of the vertical movement of waves as a power source, by extending the side wall further downward from the bottom of the main body. He invented a floating body that generates a pulling force by installing a wave introduction chamber at the bottom of the body, and as a method to convert the vertical motion energy of the floating body into rotational motion, he installed a pair of sawtooth racks on the upper surface of the floating body. A well-known structure is adopted in which teeth are arranged opposite to each other, and a ratchet gear is arranged on the transmission shaft located in the middle, and one side of the sawtooth rack rotates the ratchet gear when the floating body rises. The other serrated rack was configured to rotate the ratchet gear when the floating body was lowered, and the ratchet gear was configured to be rotated in a constant direction at all times by the up-and-down action of the rack.

However, when a floating body is configured to move up and down with the movement of waves, when the waves rise, the water level of the waves on the outside of the floating body rises, and the floating body is pressed down by the power conductor, causing the buoyancy pressure to increase. In addition, as the water level falls, the floating body on the top of the wave becomes suspended from the power conductor, and the water inside the side wall provided below the outer periphery of the bottom of the floating body is removed. As a result, pulling energy is generated.

During this vertical movement, 14 floating bodies are 10 cm above the water surface.
When the ship sinks, an upward pressure of 100 +t will occur unless energy loss between the floating body and the waves is taken into account. At this time, the bottom of the floating body is under negative pressure, so it is held down 10 cm below the water surface, and conversely, when the wave surface descends, the downward gravity is generated for the first time when the wave surface descends to the bottom of the floating body, and the 100 kg The downward force of gravity stops at the bottom of the wave, 10 cm above the water surface. In this way, when a load of LOOkg is applied during the up and down waves, the up and down movement of the floating body relative to the top and bottom of the waves is 1 each.
0 cm less, and in total, the vertical movement for one wave will be less by 20 cm.

In order to eliminate these drawbacks, the load on the floating body is separated from the power conductor, so that the floating body floats to the surface of the waves and descends to the bottom of the waves, maximizing its vertical movement relative to the waves. The purpose is to do so.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The aspects and effects of one embodiment of the present invention will be described below in detail based on the drawings.

The floating body is always configured in a position that allows for efficient depressurization in accordance with the tide level. The sawtooth rack 3 of No. 2 is pushed up, and the lower end of the sawtooth rack 3 is disengaged from the ratchet gear 5. As shown in FIG. climb to the top of the In the case of Figure 2a, the floating body 1 is suspended from the power conductor 2 due to the drop of the wave front on the outer surface of the floating body, and a downward gravity is generated, causing the floating body 1 to be lowered, as shown in Figure 2. As the floating body 1 and the power conductor 2 descend, the upper end of the sawtooth rack 4 is disengaged from the ratchet gear 5, and the floating body 1 descends to the bottom of the wave as shown in FIG. 2C.

As described above, the present invention is configured to relieve the floating pressure and the lowering pressure applied to the power conductor 2 by the vertical movement of the floating body 1 at the midpoint of the load, thereby increasing the motion efficiency of the floating body 1. Because it is a floating body depressurizing structure such as a wave energy power device,
As mentioned above, by removing the load, the upper and lower surfaces of the waves can be reduced by removing the pressure, compared to the case where the floating body 1 of ti is loaded with 100 kg up and down, unless the loss of energy between the floating body 1 and the wave is considered. The vertical movement increases by 10 cm each. For example, when the height of the wave is 30 cm, when a 1 d floating body L is loaded with 100 kf on each top and bottom, the bottom of the floating body is held down 10 cm below the top of the wave when it is pushed up, and when it is pulled down. The bottom of the floating body is 10c above the wave bottom surface.
m, and as a result, the floating body 1 can only move 1Oc111 degrees in the middle due to the load on the floating body, but by removing the pressure at the middle, the load on the floating body 1 disappears and it moves toward the top and bottom of the wave. In response to movement and uplift, the pressure is removed at the midpoint 15 cm above the bottom of the wave, and the floating body 1 floats to the top of the wave, and
For downdraft, the pressure is released at the midpoint of the wave, 150+l below the top of the wave, and the floating body l descends to the bottom of the wave. In this way, by removing pressure at the midpoint between the top and bottom of the wave, 100kg
The movement of the floating body l under this load is 15 cm vertically, and in this case, the motion efficiency is 1.5 times that of the case without pressure relief, which is a truly remarkable effect.

[Brief explanation of drawings]

FIG. 1A and FIG. 1S are side views for explaining when the floating body is raised. FIGS. 2A, 2S and 2C are side views for explaining when the floating body is lowered. 1 is a floating body, 2 is a power conductor, 3 is a sawtooth rack (for raising), 4 is a sawtooth rack (for descent), and 5 is a ratchet gear IAtAt Applicant i? Tl1l 118 1st
Figure a Figure 1

Claims (1)

[Claims] Floating body pressure relief, such as a wave power utilization power device, configured to relieve the floating pressure and pulling pressure applied to a power conductor at the midpoint of the load due to the vertical movement of the floating body, thereby increasing the motion efficiency of the floating body. structure.