JP2007064192A - Pumping type recirculation hydraulic power generation system and pumping machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pumping machine and a system capable of performing hydraulic power generation anywhere by recirculating water without specifying an installation location. <P>SOLUTION: An upper water tank and a lower water tank are provided in a power generation system and height difference between the water tanks is defined as water head, potential energy of water is used for power generation. The upper water tank, a hydraulic turbine and a generator, the lower water tank are arranged in an order. Water passing through the hydraulic turbine is guided to the lower water tank, and is pumped up to the upper water tank by the pumping machine connected to the lower part water tank. The pumping machine has a cylinder structure and pumps up water by applying Pascal's principle. Water pressure, air pressure, oil pressure, solid movement, magnetic force or the like is used as a method of generating driving force of a piston in the cylinder to drive the piston. Power generation can be sustained by repeating a process in which water in the cylinder is pumped up to the upper water tank and is recirculated. Pumping height can be adjusted by changing piston drive force and power generation quantity can be easily adjusted. The system can be introduced at any place where the upper water tank and the lower water tank can be installed without specifying a place. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a hydroelectric power generation system and a pumping method. This hydroelectric power generation system is a system that can be used for water recirculation in order to enable hydroelectric power generation almost regardless of locational natural conditions such as water resources and topographical head. It is a method of pumping water by applying Pascal's principle to create a water drop. This is a power generation system that is activated by an external power source at the time of initial startup, can be operated only by private power after normal operation, and can generate surplus power and supply power to the outside. This power generation system can be installed in buildings such as high-rise buildings, urban areas, private houses, and in areas where water resources are scarce or flat, and the installation location is a hydroelectric power generation system and a pump that are not particularly limited.

In general, most of the current hydroelectric power is generated by installing dams in places where water resources are abundant and where there is a large natural head. Recently, various systems have been developed for small hydropower generation, but the used water is almost never used for re-generation, and is discharged to the downstream after use and is not used for power generation. Large hydroelectric power generation facilities, etc. are using pumped power at night, but this is a countermeasure at peak time, and it is not possible to operate with only self-generated power instead of constant power generation, and the efficiency is poor.

Conventional hydroelectric power generation is mostly based on local natural conditions as described above, and the system and pump of the present invention recycle and use a certain amount of water, and the installation location of equipment is particularly limited. Instead, hydroelectric power generation is used and an external power source is used only at startup.After normal operation, the system is operated only with privately generated power, and surplus power is generated to enable external power supply. .

In order to solve the above-mentioned problems, the present invention provides an upper water tank and a lower water tank in a power generation system, uses the difference in height between the water tanks as a water drop, and uses the potential energy of water for power generation. Arrangement is an upper water tank, a water turbine and a generator, and a lower water tank, and water passing through the water wheel is guided to the lower water tank and pumped to the upper water tank by a pump connected to the lower water tank. The pump is a cylinder structure that uses Pascal's principle to pump water. By driving the piston using water pressure, air pressure, hydraulic pressure, solid movement, magnetic force, etc. as a method of generating piston driving force in the cylinder, pumping the water in the cylinder to the upper water tank and repeating the process of recirculating the water It was possible to generate electricity continuously. The pumping height can be adjusted by changing the piston driving force, and the amount of power generation can be adjusted easily. If the place where the upper and lower tanks can be installed, it can be solved without specifying the location. .

The hydroelectric power generation system and pump of the present invention do not require natural location conditions such as natural topography drop and abundant water resources, and can be installed in urban buildings, mountainous areas, remote islands, residential areas, etc. Independent hydropower generation is possible regardless of the conditions. During normal system operation, it is possible to generate electricity with a small amount of replenishment water other than the initial filling water without using external energy and recirculating water. It is possible to generate surplus power and supply power to the outside.

Since it can be installed on a flat place, it can be constructed at a lower cost than the conventional hydroelectric power generation equipment construction cost and plant construction cost, or the equipment can be installed underground and can be installed by conventional techniques. The cost is only the initial manufacturing and construction cost, and the power generation cost is not necessary except for the maintenance cost.

Hereinafter, preferred embodiments of a pumped recirculation hydroelectric power generation system and a pump according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a diagram showing a basic system of the system. The head required for hydroelectric power generation is provided with an upper water tank 1 and a lower water tank 2 in order to use the height difference between the upper water tank level 10 and the high water level 9 of the lower water tank as a head. A water turbine is installed in the middle of the downpipe 3 connecting the two, and a generator is connected to the water turbine for power generation. The water that has rotated the turbine enters the lower water tank 2 and is guided into the pump connected to the lower water tank, and enters the pumping chamber 25a25b in FIG. 2 of the cylinder-type water pump 2a2b. The chambers a and b are discharged by the operation of the pressurizing pistons 24a24b and are pumped to the upper water tank 1 through the pumping machine outlet pipe 7 and the pumping pipe 8. Pumping water continuously is possible by reciprocating the piston.

Even if the water level of the lower water tank drops abnormally by making the water turbine outlet pipe U seal 6a downstream of the water turbine outlet pipe 6 in the lower water tank 2 U-shaped, and the water level drops from the tip of the U seal, It is possible to prevent the inflow of air into the pipe 6 and prevent the surphone from being cut off in the pipe.

The operation of the pumps 2a and 2b will be described in the operation of the pump 2a. (Because the pump 2b moves in the opposite direction) The pump from the pump 2a is pumped by applying the Pascal principle. In the pumping method, the air compressed by the air compressor 11 is stored in the compressed air tank 13, and through the piston driving air pipe 14, the pumping machine 2a piston pressurizing air switching valve 14a is used to raise the pump 2a. FIG. When air is supplied to the air inlet 30a, the piston in the pump 2a moves in the L direction of the moving direction 33. By this movement, the water in the pumping chamber b25b is pushed by the piston, exits the pumping chamber b water outlet 29b, and is pumped to the upper water tank 1 through the pumping machine outlet pipe 7 and the pumping pipe 8. The reciprocation of the piston is switched by detecting the position of the piston. First, air is supplied to the pumping chamber a pressurizing piston pressurizing air inlet 30a in FIG. 2, the piston moves to the L side in the moving direction 33 and pumps water, detects the position where the piston reaches the moving limit point, and pressurizes the piston. When the air switching valve 14a is switched and supplied to the pumping chamber b pressurizing piston pressurizing air inlet 30b on the opposite side of the pump 2a, the moving direction 33 changes to the R side and water is supplied to the pumping chamber b25b from the lower tank. The The water in the pumping chamber a25a is pushed out and pumped into the upper water tank 1. By switching the air switching valve 14a, the air in the pumping chamber a pressurizing piston cylinder 31a is discharged as exhaust. The exhaust is collected and injected into the pumped water pipe 8 through the piston pressurized air exhaust pipe 22. The air injected into the pumping pipe is in a brackish water mixed state and ascends in the pumping pipe 8 so that the weight per unit of the water column is reduced and the pumping is made easier. Reusing this exhaust will save energy.

At the initial startup of the system, the air compressor motor 12 is driven by the external power source 17 and compressed air is produced by the air compressor 11. This compressed air activates the system and starts pumping. After that, power generation is started by passing the water wheel from the downcomer 3 and rotating the water wheel. When the system reaches normal operation, the power generation power 20 is switched to the air compressor motor drive power 19 by the power control panel 18. At this time, since the power of the turbine generated power 20 has a margin even when the air compressor motor drive power 19 is used, it is supplied and used as surplus power 21 as external power other than the system.

FIG. 2 is a diagram showing details of the pump, and the outline and operation of the structure will be described. The pump is a cylinder structure and the piston is contained in two chambers. There is a pumping water pumping chamber 26 a and a pumping water introduction pressurizing chamber 26 b, which are partitioned by a pumping chamber partition 27. When working air is injected into the pumping chamber a pressurizing piston pressurized air inlet 30 a, the piston in the cylinder starts to move to the L side in the moving direction 33. Along with this, the indoor pressure in the pumping chamber b25b rises and water is pushed out from the pumping chamber b water outlet 29b. As the piston moves to the L side in the moving direction 33, the inside of the pumping chamber a25a becomes low pressure, water is supplied from the pumping chamber a water inlet 28a connected to the lower water tank, and the pumping chamber a25a is filled with water. By switching the piston pressurized air switching valve 14a in a certain cycle and repeating the reciprocating operation, water entering the lower water tank 2 can be easily and continuously pumped into the upper water tank 1 by the pump.

It is a distribution diagram showing the outline of a pumping-type recirculation hydroelectric power generation system. It is a block diagram which shows the detail of a pumping machine. It is a figure which shows the state of the pumping completion on the L side by the action | operation of a pumping machine. It is a figure which shows the state of the pumping completion on the R side by the action | operation of a pumping machine.

Explanation of symbols

1 Upper water tank 2 Lower water tank 2a Pumping machine a
2b Pumping machine b
DESCRIPTION OF SYMBOLS 3 Precipitation pipe 4 Power generation turbine 5 Generator 6 Turbine outlet pipe 6a Turbine outlet pipe U seal 7 Pumping machine outlet pipe 8 Pumping pipe 9 Lower water tank high water level 10 Upper water tank low water level 11 Air compressor 12 Air compressor motor 13 Compressed air Tank 14 Pumping machine air tube 14a Pumping machine a piston pressurized air switching valve 14b Pumping machine b piston pressurized air switching valve 15a Pumping machine a pumping chamber a piston pressurized air 15b Pumping machine a pumping chamber b piston pressurized air 16a Pumping machine b Pumping chamber a Piston pressurized air 16b Pumping machine b Pumping chamber b Piston pressurized air 17 External power 18 Power control panel 19 Air compressor motor drive power 20 Turbine power generation power 21 Surplus power 22 Piston pressurized air exhaust pipe 23 Pumping machine main body 24a Pumping chamber a Pressurizing piston 24b Pumping chamber b Pressurizing piston 25a Pumping chamber a
25b Pumping room b
26a Pumping chamber a Pressurization chamber 26b Pumping chamber b Pressurization chamber 27 Pumping pressurization chamber partition 28a Pumping chamber a Water inlet 28b Pumping chamber b Water inlet 29a Pumping chamber a Water outlet 29b Pumping chamber b Water outlet 30a Pumping chamber a Pressurization Piston pressurized air inlet 30b Pumping chamber b Pressurizing piston pressurized air inlet 31a Pumping chamber a Pressurizing piston cylinder 31b Pumping chamber b Pressurizing piston cylinder 32a Pumping chamber a Pressurizing piston slide packing 32b Pumping chamber b pressurization Piston slide part packing 33 Movement direction

Claims (5)

In the pumped recirculation hydroelectric power generation system and the pump, the upper water tank and the lower water tank are installed in the system to drive the generator directly connected to the water turbine using the head of water, and the water leaving the upper water tank passes through the water turbine. The pump that is led to the rear lower tank and connected to the lower tank has a cylinder structure and the water that has passed through the water turbine is introduced into the cylinder from the lower tank, and the water introduced into the cylinder is driven by the pressure of the piston in the cylinder. Pumped recirculation hydroelectric power generation system and pumping machine characterized by enabling recirculation of pumped water squeezed out to the upper tank by being applied by Pascal's principle application. The pumping machine may be any cylinder structure with a polygonal circular cross section, and the piston drive source in the cylinder uses air pressure, water pressure, hydraulic pressure, magnetic force, solid movement, etc. to move the piston under pressure by applying Pascal's principle. The water in the lower tank is pumped up into the upper tank, and the piston structure is divided into two chambers, and both chambers can be pressurized alternately for pumping and sucking water. It consists of an injection part and the diameter is changed and the small-diameter side is used as the drive source injection part, and one is for pumping pressurization and the piston is moved for pumping by pressurization on the small-diameter side. The pumped recirculation hydraulic power according to claim 1, characterized in that it can be easily reciprocated in the cylinder and generates a large driving force and operating force with a small pressurized volume. Power system and the pumping machine. The structure of the upper tank can be either an open-air type with a water drop only method or a sealed pressure type with a water wheel output increase method using the water drop and internal pressure, and the installation direction of the pump is horizontal and vertical. Any number of pumps can be installed. By installing one or more pumps, it is possible to smooth the flow of the pumped water, and by installing multiple pumps, the pumping capacity per pump is small. 3. The pumped recirculation hydroelectric power generation system and pump according to claim 1, wherein the pressurized power source can be made smaller. When using air pressure to drive the piston, the air compressor is driven by installing a water turbine separate from the generator to use the potential energy of the water from the upper water tank, and all the power generated by the generator is used externally The pumped recirculation hydroelectric power generation system and pump according to claim 1, 2, 3 which are usable as electric power. When air pressure is used for the piston drive source, the unit of water column is created by injecting the exhaust air from the piston of the working air into the pumping pipe to bring it into the air-water mixture state in order to reuse the exhaust air pressure after driving the piston and save energy. The pumped recirculation hydroelectric power generation system and pump according to claim 1, 2, 3, and 4, wherein the weight per hit is reduced and the pumping height can be increased.

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