JP2012145091A

JP2012145091A - Tidal difference power generation

Info

Publication number: JP2012145091A
Application number: JP2011015773A
Authority: JP
Inventors: Hiromi Haraguchi; 弘美原口
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-11
Filing date: 2011-01-11
Publication date: 2012-08-02

Abstract

PROBLEM TO BE SOLVED: To solve the following problem: when a water turbine or a dam for tidal power generation is directly installed in a bay or a mouth of a river, an exit or the like, there may be an interference with a regional life.SOLUTION: A power generation system is installed so as not to interfere with community people as much as possible, by connecting the sea and a bay (the sea) through an underground tunnel, and installing a power generation plant under the ground. The plant is installed under the ground, thereby bringing environment-friendly effects by reducing noise or the like. The plant using the sea water is free from water shortage or the like, and constant power generation can be expected since the low and high tides surely take place every day.

Description

本発明は、潮位差を起こす海間を利用し、発電を行う。In the present invention, power is generated by utilizing seas that cause a difference in tide level.

従来の潮力発電は、潮流の早さを利用しその場所に水車等を設置し発電するものや、湾や河口等にダムを設け満潮時に貯水し干潮時放出して発電を行うものがある。Conventional tidal power generation uses the speed of the tidal current to install a water turbine at that location to generate power, or dams are installed in bays and estuaries to store water at high tide and release it at low tide to generate power. .

湾内や河口・出入口等に直接潮力発電用の水車やダムを設けるのは、地域生活や水上交通に支障をきたす恐れがある。The installation of water turbines and dams for tidal power generation directly in the bay, estuary, entrance, etc. may hinder local life and water traffic.

本発電方式は、なるべく地域の支障にならないような場所で尚且つ、潮位差を起こしやすい海と湾（海）の間を地下トンネルで貫通し、発電施設も地下に設置するものである。This power generation system is a place where it does not interfere with the region as much as possible, and it penetrates between the sea and the bay (sea) where a tide level difference is likely to occur by an underground tunnel, and the power generation facility is also installed underground.

施設を地下に設ける事により騒音等を軽減し環境にやさしい効果が期待できる。By installing the facility in the basement, noise and other effects can be reduced and environmentally friendly effects can be expected.

海水を利用する為渇水等の心配が無く、干潮満潮は毎日必ず起きるので常に一定した発電が期待できる。Since it uses seawater, there is no worry about drought and low tides occur every day, so constant power generation can be expected.

出口が狭小の湾の場合の発電用導水用トンネル設置例Example of a tunnel for power generation when the exit is a narrow bay 狭小の海峡の場合の発電用導水用トンネル設置例Installation example of a power transmission water tunnel in a narrow strait 長い半島の場合の発電用導水用トンネル設置例Installation example of water transmission tunnel for long peninsula 導水用トンネル及び発電機設置平面図Installation plan of water tunnel and generator 導水用トンネル及び発電機設置断面図Cross section of water tunnel and generator installation

以下、本発明の実施の形態を図１〜図５に基づいて説明する。Hereinafter, embodiments of the present invention will be described with reference to FIGS.

図１の様な出口が狭小な湾の場合、湾内と外海間で満干潮時海水の出入りが制限され、それに伴って湾内と外海間で潮位の差が生じる。In the case of a bay with a narrow exit as shown in FIG. 1, the access of seawater at full tide is restricted between the bay and the open sea, and a difference in tide level occurs between the bay and the open sea.

そこで湾内と外海間が比較的短い部分に導水用トンネルを設ける。現況出口と違う場所に設置することにより、地域生活になるべく支障をきたさぬ様考慮したものである。Therefore, a tunnel for water conveyance will be provided in a relatively short part between the bay and the open sea. By installing it in a location different from the current exit, it will be considered as long as it will not interfere with local life.

図２・図３も上記と同じ考えに基づいている。2 and 3 are also based on the same idea as described above.

図４では導水用トンネルの形状及び発電機の位置を示しており、導水用トンネルは発電機を中心に湾及び外海に向かって勾配を付け拡大させる。これは幅広い海水を発電機に集中させ発電効率を高めるためであり、又発電利用後の海水を素早く排水するためでもある。FIG. 4 shows the shape of the water-conducting tunnel and the position of the generator. The water-conducting tunnel is enlarged with a gradient toward the bay and the open sea centering on the generator. This is to concentrate a wide range of seawater on the generator to increase power generation efficiency, and also to quickly drain the seawater after power generation.

導水用トンネルは左右対称とし満潮時と干潮時で流水方向が逆転した場合にそれぞれで同じ機能を発揮出来る様にする。発電機も同様に流水方向が逆転してもそれぞれで発電出来る様にする。The headrace tunnel will be symmetrical so that the same function can be demonstrated when the direction of water flow is reversed at high tide and low tide. Similarly, the generator should be able to generate electricity even if the direction of water flow is reversed.

波消しブロックは台風等高波を防ぐ目的と、ゴミや流木等発電機に支障を起こすものを除去する目的である。The wave block is for the purpose of preventing high waves such as typhoons and the purpose of removing things that interfere with the generator such as garbage and driftwood.

図５も図４と同じ考えに基づいている。FIG. 5 is also based on the same idea as FIG.

Claims

Omura Bay has a large bay area but a narrow exit to the open sea. Even when the open sea is at high tide, the bay is not filled with seawater, resulting in a difference in water level from the open sea. In the case of low tide, the seawater in the bay cannot be drained into the open sea, resulting in a difference in water level from the open sea. This is due to the difference in tide level between the bay and the open sea.
This is a method of generating electricity using this tide level difference.
A tunnel through which seawater passes will be established between the bay and the open sea, and a generator will be installed between the tunnels.
Between the bay and the open sea, the sea level flows from higher to lower, so the flowing sea water generates electricity by rotating the power generation turbine in the tunnel.
This power generation method can perform tidal power generation even in straits that cause tide differences, or in places where the sea is partitioned by peninsulas and capes.