JPS59150814A - Power generation by combined use of estuary dam and high-tide water pumping type power plant - Google Patents

Abstract

PURPOSE:To enable to supply electric power by a method in which soil and sand in the downstream basin of river are horizontally removed out toward the upstream side, and in an adequate place in the downstream basin, a dam and a water pumping type power plant are provided. CONSTITUTION:Where the sea is shallow to a distance and a proper head is obtained near the river mouth, a dam 2 and a water pumping type power station 3 are provided in the river 1 and a lever 4 is provided in the shallow portion of the sea area. The water 1'' in the down stage coming up during the high tide is pumped up to the sam 2 in the upper stage by a water pumping equipment 3 powered from a transmission line and joined with water coming from the upstream. A great amount of water is stored in the dam 2 and dropped by utilizing a deeply dug head to generate electric power hydraulically which is fed to the transmission line.

Description

[Detailed Description of the Invention] The relatively flat downstream area for I'PL has a large amount of water and a wide river [1] that acts as a reservoir, but this area is mostly cultivated land and is not used for housing or other purposes. There are many factories.The conventional method of damming rivers to keep the water level high and then allowing this water to fall back into the river bed for use in hydroelectric power generation is nearly impossible due to the risk of levees breaking during floods. However, when looking at the country as a whole, the total amount of energy held by the rivers in this region is enormous, and as a resource-poor country, Japan must make effective use of this at all costs, both from the perspective of pollution prevention.

The conventional technology is to create a reservoir by damming a part of the sea surface to obtain electricity using the ebb and flow of the tide (Patent No. 170).
156), there is an idea (Japanese Patent Publication No. 41-6126) in which a reversible hydraulic machine is connected to a motor generator to push water to reservoirs with different heads or to generate electricity. Fishing restaurant? However, in addition to these ideas, it is also possible to dig down the old river bed from the end of the river mouth upstream, and to install dams with pumped storage power generation equipment at appropriate intervals as much as possible. Rise in the freshwater level (2-3 I
It is possible to pump water (up to 5-6 ns) from the upper stage to the L stage dam, and at low tide, combined with the river water flowing in from the first stream, it is possible to pump up the water to the upper level dam and the L level dam. However, a large amount of water is used to generate electricity from each dam for commercial use, which is then distributed to customers within close range through transmission lines or distribution lines. It is characterized by its ability to make advanced use of energy from the ebb and flow of the sea as well as from rivers, as well as improving the power factor of power transmission and distribution lines and preventing pollution.

Generally, hydroelectric power generation is generated in remote mountainous areas, and over long distances 1^1.
The power is then transmitted to cities and industrial areas in the plain river basin, but due to the long distance power transmission, a drop in power factor is unavoidable and a large amount of money is invested in equipment such as phase advance equipment. Producing electricity nearby would solve this problem. Traditionally, thermal power generation facilities that augment hydroelectric power generation have been used to solve this problem, but they are currently plagued by high costs and increased pollution.

This invention was developed in Japan, which is surrounded by the sea and has abundant rivers flowing into the sea as a mountain range running through the center of the archipelago, and where cities and industrial areas that supply electricity are concentrated in river basins and around 10 rivers. Taking into consideration the special circumstances of the area, we constructed multiple dams by digging up the old riverbed line near the river mouth, which is a high demand area for electricity, and used high tide to pump up water to the upper dam, thereby reducing the flow of river water from upstream. This will increase the amount of water in the dam, generate electricity using low-head power generation equipment, supply or receive power to and from power transmission and distribution lines throughout the country, and pump up water for power generation, reducing the amount of electricity consumed during pumping in regional blocks. The aim is to generate useful power as a whole by utilizing natural energy generated by the ebbs and flows of the river and by improving the power transmission rate, and by appropriately combining the pumping and power generation of each connected dam.

The present invention will be described in detail below based on the embodiments shown in the figures.

The topography of the area is diverse, and there are various specific ways to use the reeds. For example, if the sea is shallow, a simple weir 4 is built by driving steel sheet piles etc. into the sea area 2, and the whitening and old riverbeds 1 and 1' and the riverbed 1' are appropriately dug 9 and the water pumped up. Weirs A and A with type power generation facilities C and c'2 installed
′ヲsetting〈. At high tide, seawater pushes up the fresh water on sides 2 and 1', i.e. 1'2 below dam A' (the water level at 1111 is Osho).
I'll do two. At this point, the power transmission and distribution installation 1ii°1 was set to M+ to receive power, and the water pumping equipment was set to 11°ff C' and pushed up. If dams A and C exist, use pumping equipment C for dam A and pump dam 1.
] ↓ 21 At appropriate times, especially at low tide, these power generation facilities will be used to generate 11゛6 industrial power and supply all high power factor electricity to general consumers through the local power transmission and distribution network.

In addition, at the time of πlb tide, the salt water at 2 rapidly moves below the dam A' in order to pump water to the upper dam 1' by the equipment C'.In order to prevent this salt water from being pumped to the upper dam 1' This can be prevented by filing an application.

That is, there is a difference in electrical resistance between salt water and fresh water.

Applying this principle, weak electric current is used to indicate saltwater areas in downstream rivers with signal lights, alarms with buzzers near the upstream limit, and finally a relay is used to shut down the pumping equipment and prevent salt water from being pumped up.

As much as possible, weir A with pumped storage power plant C installed in Figure 1 will be installed one after another in the first stream, and all efforts will be made to generate, transmit and distribute electricity, and all efforts will be made late at night or on connected days. 5 in the figure indicates land that is ready for power supply tomorrow after pumping water.

Furthermore, if a gate 2' is provided at the end of the embankment, it becomes possible to close the gate just before the transition from high tide to low tide, prolonging the high tide state in the reservoirs 2 and 1, and increasing the amount of water pumped.

In order to increase electricity production using rivers, it is important to install large freshwater ponds at the ends of rivers.

Furthermore, in areas where the estuary 1 faces the open sea 7 and is deep and has rough seas, the bed of the river 1 is dug upstream and 60 sections are made into a sea inlet, as illustrated in Figure 3, and pumped storage power generation is installed in the upper area. A dam 2 with equipment 8 is installed. In the figure, 7 indicates the open sea and 8 indicates the wave return wall.

In addition, when a river, lake, inlet, etc. and high tide water are used for continuous fermentation and used for pumped storage power generation, for example, in Figure 4, the water level 9 in the open sea 7 and the water level 9' in the lake 10 are almost the same. They are all the same, with only a slight time difference, so if you connect river 1 and lake 10 at dotted line 11, dig down their basin, and install a dam with pumped storage power generation equipment at the appropriate location, the distance will be shortened. The head difference is also large, and a large amount of power generation is required.

Next, we will look at the vertical cross-section of how to use 1 part of the river.
Illustrated in the figure. All of the examples shown are "two-stage" 41. equipped with pumped storage power generation equipment. Levee A, lower dam A', and 6 are all old riverbed lines, 6' is a part of the riverbed dug, and 7 is -
1 is the water surface of the first dam, 7' is the water level of the lower dam, 8 is the water surface of the lower dam at high tide, 9 is the water level at low tide in the morning, m1.10 is its half-phase water level, and up to quite downstream of dam A' Permanent freshwater area, 11
is an ocean area.

During high tide, the freshwater level downstream of dam A' begins to rise in the direction shown in 8 due to the pushing action of seawater during high tide. This appropriate point is captured and the water pumping equipment installed on the dam is connected to the upper dam 7'. Historically, the water pumping equipment installed on dam A was used to pump water to the lower level dam 7 to the maximum capacity of the upper dug-out dam, and to discharge the water to the lower dams when necessary. In the process, electricity was generated, transmitted, and distributed. By supplying commercial power through the facility, we will be able to make advanced use of the energy of the vast unused rivers in relatively flat areas, and will greatly contribute to the prosperity of Japan, a resource-poor country.

In addition, this plan is shown below.

1. Even if Daio Para continues, there is no need to worry about urban water supply. 1. There is no risk of the embankment breaking due to flooding. 1. It can be used as a fish pond. 1. It can be used as a leisure base for residents, etc.

[Brief explanation of drawings]

The figures show an example of the method of this invention. Figure 1 is an explanatory diagram when an appropriate head can be obtained near the river mouth. Figure 2 is an explanatory diagram when the area is relatively flat. Figure 3 is an explanatory diagram when the area is relatively flat. Figure 4 is an explanatory diagram for an area facing the open sea with deep rough seas. Figure 5 is an explanatory diagram for connecting rivers, lakes, coves, etc. with high tide water, and the entire riverbed is dug down for use in pumped storage power generation. 6 is a schematic diagram of a vertical cross-section of the entire river mouth area of the present invention, where 6... is the old river bed, A... A' are both pumped storage power generation facilities, and the upper and lower dams 6'... are respectively. New riverbed that has been lowered. 7...7' are the water levels of the upper and lower dams, '8... are the water levels under the dam at high tide, 9... are the water levels downstream of dam A' at low tide, and 11... are the ocean area.ノ 1 Zhao Me - ♂ Law Three-cause voluntary amendment procedure Amendment Written by the Commissioner of the Patent Office on May 28, 1982 1. Indication of the case Patent Application No. 28408 of 1983 Name of Z Invention Estuary Weir and High Tide Pumping System 8. Relation to the case of the person making the amendment Patent applicant's address Uenma Shinjo Mizujisuran ￥ Laughter 5, Details of the amendment 1, Name of the invention Kawaguchi Weir and Man M1' A power generation method using water type 2, Claims In order to utilize the energy of rivers to a high degree and generate electricity for commercial use, earth and sand in the downstream basin of a river is removed horizontally toward the upstream, and its appropriate A dam and pumped-storage power generation equipment will be installed at this location, and the fresh water that is pushed up at high tide will be pumped up to the upper dam of the dam, and the water pushed up to the dam at low tide and the water flowing down from upstream will be used. In other words, when the head difference between the water level of the upper dam and the water level of the lower part of the moat 9 increases, it is fully utilized to generate electricity for commercial use, and the electricity is transmitted through a combination of the estuary weir and the pumped storage system. Method 3: Detailed Description of the Invention This invention focuses on the fact that Japan has abundant rivers or lakes that open into the sea, and the phenomenon that densely populated areas and industrial areas are concentrated in the river basins, especially near the river mouths. A weir (dam) with a low head and high water flow (hereinafter referred to as a dam) is constructed near the river mouth, and both the amount of water flowing into the dam from upstream and the amount of water pumped up by the river water pushed up at high tide to the upper dam are used. Related to a method for generating electricity at low tide. As a conventional technology, a reservoir is installed by weiring a part of the ocean to obtain electricity by utilizing the ebb and flow of the tide (Patent No. 17).
0156) and the idea of connecting a reversible hydraulic machine to a motor generator to push water to reservoirs with different heads (or generating electricity (Japanese Patent Publication No. 41-6126)).On the other hand,
Although this application makes full use of the above-mentioned technical ideas, it is not limited to just these ideas; it is also necessary to establish as many dams as possible near the mouth of the river and install pumped storage power generation equipment in each of them. Organically linked to the dam's power generation equipment via power transmission lines, the area downstream of the dam is lowered by a moat 9 to increase the total head, making use of the uplifting effect of water at high tide, as well as using natural flowing water from the river. The system is characterized by storing a large amount of water near the estuary, albeit at a low head, and transmitting it over close distances to the power supply destination, thereby improving the power transmission rate, preventing pollution, and saving energy. That is. In general, hydroelectric power generation is generated in remote areas in the mountains and transmitted over long distances to cities and industrial areas in the plains and river basins. is spending money. On the other hand, this problem can be solved by generating electricity close to cities and industrial areas, and conventional thermal power generation facilities that augment hydropower generation also solve this problem, but since the oil crisis, they have been plagued by pollution problems and high Conut prices. This is the current situation. This invention was developed in Japan, which is surrounded by the sea on all sides, has a mountain range running through the center of the archipelago as its watershed, and has an abundance of rivers flowing into the sea. Taking special circumstances into consideration, we built multiple dams near the river mouth, which is a high demand area for electricity, and used high tide to pump water to the upper dam, creating an abundance of ftk of dam water in line with the flowing river water. and generate electricity using low-head power generation equipment.
Power is generated and pumped by appropriately supplying or receiving electricity to power transmission and distribution lines that cover the entire country, and in regional blocks, the negative power consumption during pumping is reduced by using natural energy and river water flow due to the ebb and flow of the tide, and reducing the power transmission rate. The aim is to appropriately combine the pumping and power generation of each connected dam to achieve useful power generation as a whole. ¥ in the following figure: This invention will be described in detail based on examples. First of all, since the topography of the region is varied, there are various possible ways to utilize it. For example, if the sea is shallow and an appropriate head can be obtained near the river mouth, as shown in Figure 1, a dam 2 and a pumped storage power generation facility 3 (a reversible electric power generator connected to a hydraulic turbine or pump) are installed on the river L. equipment, or a generator and electric pump (independent chemical equipment, pumping equipment),
A levee 4 is provided in a shallow part of the sea area, so that the water depth downstream of the power generation equipment and inside the levee 4 is constant even at low tide, and the water is in the form of fresh water and oil. The water in the lower tier that has been pushed up by 7 MJ + 1' is received from the power transmission line through the pumping equipment 3 to the dam 2 in the upper tier, is pumped up, and combines with the water flowing in from upstream to create abundant water in the dam 2.ffc The water is stored in the dam, and then pumped at the appropriate time to the upper dam through the pumping equipment. Hydroelectric power is generated by dropping the water onto the power transmission line. The supply and demand of these electric powers will be connected through power transmission lines to pumped storage power generation facilities on multiple rivers, so that they can pump water or generate electricity as needed, and supply power to users such as sub-districts. 5 in the figure indicates land. If a gate 2' is provided at the end of the embankment, it will be possible to close the gate just before the transition from high tide to low tide, prolonging the high tide state in the reservoir and increasing the amount of water pumped. Next, if the area is relatively flat, 1. If the high tide water extends far upstream to the position shown in dotted line 13, dig up the soil slightly downstream and upstream.
and pumped storage power generation equipment 3. Even if the downstream basin of the power plant is long and there is little need for sea embankments 4, by providing a dam in this way, it is possible to prevent salt from flowing upstream. In addition, a patent application has been filed for the purpose of preventing the upstream of salt water. As a result of the transition, signal lamps are lit one after another, a buzzer is activated near the upstream limit, and pumping is automatically stopped by the operation of a relay. : As shown in Figure 3, the river 1 is turned upstream to form a sea inlet at the location of the dug-out part 6, and the dam 2 and pumped storage power generation facility 3 are installed above it.7 in the figure. The open sea 8 indicates a wave return wall. Also, when high tide water is connected to a river, lake, inlet, etc. and used for pumped storage power generation, for example, in Fig. 4, the water level 9 of the open sea 7 and the water level of the lake 10 are It is almost the same as the upper water level 9', and if river 1 and lake 10 are connected around dotted line 11 with a slight time difference, and all dams and pumped storage power generation equipment are used at appropriate locations, the head will be reduced. A large amount of electricity can be generated.Next, a vertical cross-sectional view of the vicinity of the river mouth weir is shown in Figure 5.In the figure, 1 shows the average water level of the sea area, E shows the high tide water level, F shows the low tide water level, and A shows the old river bed line. The diagram shows the water surface of the dam, with the dam installed on the river mouth side 2 and the dam 2' above it. Tighten it,
It is designed to be linked with pumped storage power generation facilities on other rivers to pump water or generate electricity as appropriate. Since this invention generates electricity using the power generation equipment as described above, it has the following effects. (1) If this system is installed on each river and the pumped storage power generation facilities of these dams are organically connected via power transmission lines, while the pumped storage facilities of some dams will receive power from the power transmission lines, many other dams will receive power from the power transmission lines. The dam generates power, and when combined with regional tidal time differences and the use of surplus power at night, it becomes possible to generate electricity at all times, and when combined with existing hydropower and thermal power generation, the supply and demand of electricity is smoothly maintained. (2) Since the use of A1's ebb and flow and river water flow can be used as energy in the natural world, it eliminates the pollution that is a problem with current power generation methods that have a high proportion of thermal power generation. Pollution prevention and energy conservation have a significant effect on the rising cost of oil consumption, which has become expensive. (3) If a power station is established in the downstream area of a river, it will reduce Generally speaking, cities and industrial areas are concentrated, so it is necessary to install power generation facilities near power consumption areas, unlike the conventional method of generating power deep in the mountains and distributing it from far away to consumption areas.
It is possible to significantly prevent a decrease in the power factor that occurs due to 1F force transport. (4) Multiple dams are installed in river basins and estuaries, and water is consumed when pumping water from each lower dam to a higher dam.
E-power is generated by the productivity of power generation by utilizing natural energy due to the difference in tidal level and by using the natural water flow of rivers, and by reducing the power factor by generating electricity in remote mountainous areas and transmitting it to distant power consumption areas. The loss is far more than worth it. (5) The dam at the river mouth has a small head, but the water storage area is larger than that, and by using a low-head hydroelectric generator, the amount of power generated is quite large, making it fully practical. (6) By digging down the downstream part of the dam, the amount of water stored will increase, and the head will also increase, contributing to an increase in power generation. (7) Freshwater to semi-freshwater reservoirs can be created near the river mouths, which can be used as a source of fishery for sustenance, as well as as tourist spots and urban water bases. 4. The simple explanatory diagrams in the drawings show examples of the method of this invention. Figure 1 is a plan view when a suitable white head can be obtained near the mouth of the river, and Figure 2 is an explanatory diagram when the area is relatively flat. Figure 3 is an explanatory diagram of an area where the estuary faces the open sea and has deep rough seas. Figure 4 is a diagram showing the case where high tide water is connected to a river, lake, inlet, etc. and used for pumped storage power generation. FIG. 5 is a longitudinal cross-sectional view of the vicinity of the river mouth weir. A [Old riverbed 2 is the dam B is the lower part of the moat 9 - F is the water surface at low tide E is the water surface at high tide K is the water surface of the dam
G indicates sea area Patent applicant Oto Ishizuka

Claims (1)

[Claims] Along the basin of the river, from the mouth of the river to the estuary, the entire river bed will be dug down as appropriate, and multiple dams will be constructed in sequence as far as possible, and each dam will be equipped with a pumped storage power generation installation. The freshwater level, which is pushed up at high tide under the embankment at the downstream end, rises. At this time, the water pumping equipment installed on the dam is used to pump water to the terminal dam, and if necessary, it is possible to pump water sequentially to the upper dam, and the head difference between the terminal dam and the lower dam at low tide. When the amount of water increases, the pumped water and the water from the first stream can be used to generate commercial power using each power generation facility, and the system can supply all the power to local distribution lines or transmission lines. A power generation method that uses a single weir on the river and a high tide pumping system.