Pressurized pumped-storage hydropower system using cylinder and piston

Abstract

Disclosed is a pressurized pumped-storage hydropower system using a cylinder and a piston, the system comprising: a turbine unit (110) formed to rotate in a space inside a turbine cover (111) and including a turbine (112) that generates power from the hydraulic head of a fluid falling via an inlet passage (111a); a discharge unit (120) including a discharge pipe (121), which guides the fluid supplied to the turbine (112), and first valves (122), which are vertically spaced inside the discharge pipe (121) and interrupt the flow of the fluid; a cylinder unit (130) including a piston (132), which ascends and descends inside a cylinder (131) and accommodates the fluid in an inner space, and a second valve (133), which is formed at the bottom surface of the piston (132) and opens and closes to communicate the cylinder (131) and the piston (132); and a return unit (140) including a return pipe (141), which is connected from an outlet passage (111b) of the turbine unit (110) to the upper end of the piston (132), and a return pump (142), which is formed in the return pipe (141) and pumps and returns the fluid. In a state in which the second valve (133) is open and the first valves (122) are closed, the cylinder (131) is filled with a certain amount of the fluid. In a state in which the second valve (133) is closed, the piston (132) is filled with a certain amount of the fluid by the return unit (140), after which the first valves (122) are opened to make the fluid filled in the cylinder (131) fall to the turbine (112), and thereby generate power by means of the hydraulic head.

Description

Pressure pumping power generation system using cylinders and pistons

[0001] The present invention relates to a pressure pumping power generation system using a cylinder and a piston, which can forcibly discharge fluid by lowering a high-load piston inside a cylinder and drop it into a turbine to generate electric power.

[0002] Generally, hydroelectric power generation can be done by creating a dam in a valley where the water volume is abundant and a high water drop is expected to generate electricity, or by pumping storage power, which is a method of pumping water to an upper dam at night when electricity consumption is low and operating it during peak electricity use hours to supply electricity.

[0003] Meanwhile, hydroelectric power generation requires enormous costs and many requirements, such as dams to hold water and rainfall, while nuclear power generation is expensive and risky, and post-use reprocessing is problematic, and thermal power generation is gradually being phased out due to its large carbon emissions, which pose a serious problem in climate warming.

[0004] In addition, there are various methods of power generation on Earth, such as hydroelectric power, nuclear power, thermal power, solar power, and wind power, but they emit enormous amounts of carbon, which is causing serious problems for humanity due to climate change and global warming.

[0005] In this way, because there are significant restrictions on the locations for constructing large-scale dams and dams, many problems arise, such as environmental damage and threats to the livelihoods of local residents. In addition, it is extremely difficult to secure locations for pumped storage power plants that have a significant area and topographical conditions that allow for large head differences.

[0006] Accordingly, there is a need for a power generation system technology that can produce and supply electricity by installing it on a small site around a large city regardless of location conditions.

[0007] [Prior Art Literature]

[0008] [Patent Document]

[0009] Korean Patent Publication No. 10-1258892 (Hydroelectric power generation device using multiple turbines and flow channels, April 30, 2013)

[0010] Korean Patent Publication No. 10-1726242 (Construction and Operation Method of a Pumped-Storage Power Generation System Using Seawater, April 12, 2017)

[0011] The technical problem to be achieved by the present invention is to provide a pressure pumping power generation system using a cylinder and a piston, which can forcibly discharge fluid by lowering a high-load piston inside a cylinder and drop it into a turbine to generate electricity.

[0012] In order to achieve the above-mentioned object, an embodiment of the present invention comprises a turbine unit comprising a turbine cover having an inlet passage formed through one side thereof and a discharge passage formed through the other side thereof, and a turbine formed to rotate in an inner space of the turbine cover and generating power by a drop of fluid falling through the inlet passage; a discharge unit comprising a discharge pipe extending upright from the inlet passage and guiding fluid supplied to the turbine, and a first valve arranged vertically and spaced apart from each other on the inner side of the discharge pipe to control the flow of the fluid; a cylinder unit comprising a cylinder having a predetermined capacity formed in communication with an upper portion of the discharge pipe and having a diameter relatively larger than a diameter of the discharge pipe, a piston arranged to rise and fall inside the cylinder and receiving fluid in the inner space, and a second valve formed on a lower surface of the piston to mutually communicate the cylinder and the piston by opening and closing; And a recovery unit comprising a recovery pipe connected from the discharge path of the turbine unit to the upper end of the piston, and a recovery pump formed in the recovery pipe to pump and recover fluid; wherein, in a state where the second valve is opened and the first valve is closed, a certain amount of fluid is filled into the cylinder, and in a state where the second valve is closed, a certain amount of fluid is filled into the piston by the recovery unit, and then, by opening the first valve, the fluid filled in the cylinder falls to the turbine to generate power by the drop.

[0013]

[0014] Here, the piston is made of a metal material having a relatively large specific gravity compared to the specific gravity of the fluid, and when the second valve is locked, the piston is lowered by the load of the piston and the load of the fluid filled in the piston, thereby discharging the fluid filled in the cylinder through the discharge portion and causing it to fall to the turbine, and after the fluid filled in the cylinder is discharged, the second valve is opened to discharge the fluid filled in the piston through the discharge portion and cause it to fall to the turbine.

[0015]

[0016] In addition, the cylinder may further include a piston lifting unit that raises the piston, which has descended from the inside, to a certain height.

[0017]

[0018] In addition, the piston lifting unit may be composed of a chain connected to the upper end of the piston, a plurality of rollers supporting the chain, and an electric motor connected to the end of the chain to wind the chain.

[0019]

[0020] In addition, guide rollers arranged symmetrically on the circumference are formed on the outer surface of the piston and are in close contact with the inner surface of the cylinder, thereby guiding balanced elevation of the piston.

[0021]

[0022] In addition, an air buoyancy tube is attached to the bottom of the piston, and when the second valve is closed, the piston is lowered by the load of the piston and the load of the fluid filled in the piston, and the fluid filled in the cylinder is discharged through the discharge portion to fall to the turbine, and after the fluid filled in the cylinder is discharged, when the first valve is closed, the second valve is opened to fill the fluid between the cylinder and the piston, and the piston is raised by the air buoyancy tube.

[0023]

[0024] In addition, the cylinder is composed of a corrugated pipe that can contract and expand, and the piston is coupled to the upper end of the cylinder, so that the cylinder can contract and discharge the fluid by the load of the piston and the load of the fluid filled in the piston.

[0025]

[0026] According to the present invention, a fluid can be forcibly discharged by the descent of a high-load piston inside a cylinder and dropped to a turbine to generate electric power, and the fluid can be discharged not only by the cylinder having a ring-type cylinder shape, but also by a configuration of a corrugated jabara shape or a cylindrical jabara shape, and there is an effect of being able to construct a power generation system that can generate and supply electric power by installing it on a small site around a large city without being restricted by location conditions.

[0027]

[0028] Figure 1 illustrates an implementation diagram of a pressure-storage power generation system using a cylinder and a piston according to an embodiment of the present invention.

[0029] Fig. 2 is an enlarged view of the cylinder section of a pressure pumping power generation system using the cylinder and piston of Fig. 1.

[0030] Figure 3 illustrates the operation of a pressure pumping power generation system using the cylinder and piston of Figure 1.

[0031] Figures 4 and 5 illustrate variations of the pressure pumping power generation system using the cylinder and piston of Figure 1, respectively.

[0032]

[0033] Hereinafter, an embodiment of the present invention having the above-described features will be described in more detail with reference to the attached drawings.

[0034]

[0035] A pressure pumping power generation system using a cylinder and a piston according to an embodiment of the present invention comprises: a turbine cover (111) having an inlet passage (111a) formed through one side thereof and a discharge passage (111b) formed through the other side thereof; a turbine (112) formed to rotate in an inner space of the turbine cover (111) and generating power by the drop of fluid falling through the inlet passage (111a); a discharge section (120) having a discharge pipe (121) extending upright from the inlet passage (111a) and guiding the fluid supplied to the turbine (112); and a first valve (122) arranged vertically inside the discharge pipe (121) to control the flow of the fluid; a cylinder (131) of a predetermined capacity that is connected to an upper portion of the discharge pipe (121) and formed with a diameter that is relatively larger than the diameter of the discharge pipe (121); A cylinder part (130) is configured with a piston (132) that is arranged to rise and fall inside a cylinder (131) and receives fluid in the internal space, and a second valve (133) formed on the bottom surface of the piston (132) to mutually connect the cylinder (131) and the piston (132) by opening and closing, and a recovery part (140) is configured with a recovery pipe (141) that is connected from the discharge path (111b) of the turbine part (110) to the upper end of the piston (132), and a recovery pump (142) formed in the recovery pipe (141) to pump and recover the fluid, and in a state where the second valve (133) is open and the first valve (122) is closed, a certain amount of fluid is filled into the cylinder (131), and in a state where the second valve (133) is closed, a certain amount of fluid is filled into the piston (132) by the recovery part (140), By opening the first valve (122), the fluid filled in the cylinder (131) falls to the turbine (112) to generate power by the difference in pressure.

[0036]

[0037] Hereinafter, with reference to the drawings, a pressure booster power generation system using a cylinder and piston of the above-described configuration is specifically described as follows.

[0038]

[0039] First, the turbine section (110) is a configuration that generates power by a turbine (112) having a rotor and a stator that rotate by the drop of a fluid. Referring to FIG. 1, it is composed of a turbine cover (111) having an inlet passage (111a) formed through one side and an outlet passage (111b) formed through the other side, and a turbine (112) that is formed to rotate in the inner space of the turbine cover (111) and generates power by the drop of a fluid falling through the inlet passage (111a).

[0040]

[0041] Next, the discharge unit (120), referring to FIG. 1, is composed of a discharge pipe (121) of a certain length that extends vertically upward from the inlet (111a) and guides the fluid supplied to the turbine (112), and a first valve (122) that is spaced apart vertically on the inside of the discharge pipe (121) and controls the flow of fluid from the cylinder unit (130) to the turbine unit (110).

[0042]

[0043] Next, the cylinder part (130), referring to FIGS. 1 and 2, is composed of a cylinder (131) that is formed in communication with the upper portion of the discharge pipe (121) and accommodates a certain volume of fluid, a piston (132) that is arranged to rise and fall inside the cylinder (131) and accommodates a certain volume of fluid in the internal space, and a second valve (133) that is formed on the lower surface of the piston (132) and allows the cylinder (131) and the piston (132) to communicate with each other by opening and closing to allow the fluid to pass through.

[0044] Here, the piston (132) is arranged to rise and fall inside the cylinder (131), and the second valve (133) can control the fluid filled in the piston (132) to move to the cylinder (131).

[0045] Meanwhile, as illustrated in FIG. 1, the diameter of the cylinder (131) is formed to be relatively larger than the diameter of the discharge pipe (121), so that, conventionally, the length of the discharge pipe (121) can be made relatively long to rotate the turbine (112) by the drop of the fluid, but in this case, there is a spatial constraint that the discharge pipe (121) must be installed high. In the present embodiment, even if the diameter of the cylinder (131) is made relatively larger than the diameter of the discharge pipe (121) and the height of the discharge pipe (121) is not increased, a drop effect of the fluid similar to or identical to the drop effect by the conventional discharge pipe is implemented by the load of the fluid filled in the cylinder (131) or by the lowering of the piston (132), so that it can be installed in a relatively narrow outdoor space or inside a building to generate power.

[0046] Due to the structure of the cylinder (131) as described above, the length of the discharge pipe (121) is shortened so that it can be installed in a narrow outdoor space or inside a building, and the piston (132) can be placed inside the cylinder (131) so that it can be repeatedly raised and lowered to continuously supply fluid to the turbine (112).

[0047]

[0048] In addition, as illustrated in FIG. 3, with the second valve (133) open and the first valve (122) closed, a certain amount of fluid recovered from the recovery unit (140) is filled into the cylinder (131) at a position where the piston (132) has risen (a), and after the cylinder (131) is filled with a certain amount of fluid, with the second valve (133) closed, a certain amount of fluid is filled into the piston (132) by the recovery unit (140) (b), and then the first valve (122) is opened so that the fluid filled into the cylinder (131) falls to the turbine (112) to generate power by the fall.

[0049] That is, the piston (132) is made of a metal material having a relatively large specific gravity compared to the specific gravity of the fluid, and when the second valve (133) is locked, the piston (132) is lowered by the load of the piston (132) and the load of the fluid filled in the piston (132), so that the fluid filled in the cylinder (131) is discharged through the open discharge portion (120) and dropped into the turbine (112), and after the fluid filled in the cylinder (131) is discharged, the second valve (133) is opened so that the fluid filled in the piston (132) is discharged through the discharge portion (120) and dropped into the turbine (112).

[0050] Meanwhile, the turbine (112) can be rotated by configuring the piston (132) to be discharged by opening the second valve (133) after the fluid filled in the cylinder (131) is discharged, but the turbine (112) can also be rotated only by the discharge of the fluid filled in the cylinder (131).

[0051] For example, referring to FIG. 2, an air buoyancy tube (134) is attached to the bottom of the piston (132), and when the second valve (133) is locked, the piston (132) is lowered by the load of the piston (132) and the load of the fluid filled in the piston (132), and the fluid filled in the cylinder (131) is discharged through the discharge portion (120) and dropped to the turbine (112), and after the discharge of the fluid filled in the cylinder (131) is completed, when the first valve (122) is locked, the second valve (133) is opened to charge the fluid between the cylinder (131) and the piston (132), and the piston (132) is raised by the air buoyancy tube (134), and after the discharge of the fluid filled in the cylinder (131) is completed, from a compressed air tank (not shown) Compressed air can be provided to the air buoyancy tube (134) to provide buoyancy to the piston (132) so that it rises from the cylinder (131).

[0052] Here, although not shown, a stopper and a position sensor such as a limit sensor that limit the rising height of the piston (132) are formed at the top of the cylinder (131), so that when the piston (132) comes into contact with the stopper, the fluid can be supplied from the recovery unit (140) to the cylinder (131).

[0053] In addition, as illustrated in FIG. 2, guide rollers (135) symmetrically arranged on the circumference are formed on the outer surface of the piston (132) to adhere to the inner surface of the cylinder (131) so as to guide the balanced and stable elevation of the piston (132), and the space between the cylinder (131) and the piston (132) can be physically isolated by a separate water plate (not shown) to prevent fluid from flowing into the space between them.

[0054] In addition, the first valve (122) and the second valve (133) mentioned above can be opened and closed in conjunction with a level sensor (not shown) that measures the level of the fluid filled in the cylinder (131) and the piston (132), respectively.

[0055]

[0056] Meanwhile, in the turbine section (110), two or more cylinder sections (130) are arranged in parallel to alternately drop fluid into the turbine (112) so that the turbine (112) rotates at a constant speed without stopping, thereby continuously producing power by the turbine (112).

[0057]

[0058] Next, the recovery unit (140), referring to FIG. 1, is composed of a recovery pipe (141) connected from the discharge path (111b) of the turbine unit (110) to the upper end of the piston (132), and one or more recovery pumps (142) formed in the recovery pipe (141) to pump the fluid and recover it from the turbine unit (110) to the piston (132).

[0059] Here, the recovery pump (142) can perform pumped storage power generation by the turbine unit (110) by immediately supplying or storing surplus regenerative power generated by external power, such as environmentally friendly power generation such as solar power, wind power, or geothermal power, and supplying it when needed so that it can be operated when power demand increases, or by storing power from late at night when power demand is low and supplying it when needed so that it can be operated when power demand increases.

[0060]

[0061] In addition, referring to FIG. 1, a piston lifting unit (150) that raises and lowers a piston (132) descended from the inside of a cylinder (131) to a certain height may be further included, and the piston lifting unit (150) is composed of a chain (151) connected to the upper end of the piston (132), a plurality of rollers (152) that support the chain (151), and an electric motor (153) that is connected to the end of the chain (151) and winds the chain (151), so that, similar to the recovery pump (142) mentioned above, the electric motor (153) can be driven by external power.

[0062] That is, the piston lifting unit (150) may be configured to operate in conjunction with the rising of the piston (132) by the air buoyancy tube (134) or may be configured to operate independently, so as to raise the piston (132) in conjunction with the rising of the piston (132) or to raise the piston (132) independently when the air buoyancy tube (134) breaks down.

[0063] In this way, although external power is required to drive the recovery pump (142) and the electric motor (153), by using environmentally friendly external surplus power and supplying the entire power produced by the turbine unit (110) to an external power demand source, the power supplied to the external power demand source is relatively greater than the power supplied to the recovery pump (142) and the electric motor (153), thereby making the power generation productivity effective.

[0064]

[0065] Alternatively, referring to FIG. 1, the first valve (122) of the discharge unit (120) is arranged vertically spaced apart from the upper valve (122a) and the lower valve (122b), and the piston lifting unit (150) is composed of a connecting pipe (154) connected to the discharge pipe (121) between the upper valve (122a) and the lower valve (122b), and a compressed air tank (155) that provides compressed air through the connecting pipe (154), and the compressed air tank (155) can increase the discharge pressure or discharge speed of the fluid passing through the discharge unit (120) to increase the rotational speed of the turbine (122), or can provide compressed air to maintain the discharge pressure or discharge speed of the fluid constant so that the turbine (112) rotates at a constant speed.

[0066] Alternatively, after the discharge of the fluid filled in the cylinder (131) and piston (132) is completed, the upper valve (122a) may be opened and the lower valve (122b) may be closed, and the compressed air tank (155) may inject compressed air through the connecting pipe (154) to raise the piston (132) by air pressure.

[0067]

[0068] Meanwhile, FIGS. 4 and 5 illustrate variations of a pressure pumping power generation system using the cylinder and piston of FIG. 1, respectively. As illustrated in FIG. 4, the cylinder (131) is configured as a corrugated pipe of a corrugated Javara type (see FIG. 4) or a cylindrical Javara type (see FIG. 5) that can be folded in multiple stages and can be expanded and contracted, and the piston (132) is coupled to the upper end of the cylinder, so that the cylinder (131) can be contracted and discharged by the load of the piston (132) and the load of the fluid filled in the piston (132).

[0069]

[0070] Therefore, by configuring a pressure-storage power generation system using a cylinder and piston as described above, it is possible to forcibly discharge fluid by lowering a high-load piston inside the cylinder and drop it to a turbine to generate power, and the fluid can be discharged not only by a ring-type cylinder but also by configuring the cylinder to be a corrugated jabara type or a cylindrical jabara type.

[0071]

[0072] The embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0073] [Explanation of symbols]

[0074] 110: Turbine section 111: Turbine cover

[0075] 112: Turbine 120: Discharge

[0076] 121: Discharge pipe 122: First valve

[0077] 130: Cylinder section 131: Cylinder

[0078] 132: Piston 133: Second valve

[0079] 134: Air buoyancy tube 135: Guide roller

[0080] 140: Recovery section 141: Recovery pipe

[0081] 142: Recovery pump 150: Piston lifting part

[0082] 151: Chain 152: Roller

[0083] 153: Electric motor 154: Connector

[0084] 155: Compressed air tank

Claims

1. A turbine unit comprising a turbine cover having an inlet passage formed through one side and an outlet passage formed through the other side, and a turbine formed to rotate in the inner space of the turbine cover, and generating power by the drop of fluid falling through the inlet passage; A discharge unit comprising a discharge pipe extending vertically from the inlet passage and guiding the fluid supplied to the turbine, and a first valve arranged vertically apart from each other on the inside of the discharge pipe to respectively control the flow of the fluid; A cylinder part, which is formed in communication with the upper part of the discharge pipe and is formed with a cylinder of a certain capacity formed with a diameter relatively larger than the diameter of the discharge pipe, a piston arranged to rise and fall inside the cylinder and receiving fluid in the internal space, and a second valve formed on the lower surface of the piston and connecting the cylinder and the piston to each other by opening and closing; and A recovery unit comprising a recovery pipe connected from the exhaust passage of the turbine section to the upper end of the piston, and a recovery pump formed in the recovery pipe to pump and recover the fluid; In a state where the second valve is open and the first valve is closed, a certain amount of fluid is filled into the cylinder, and in a state where the second valve is closed, a certain amount of fluid is filled into the piston by the recovery unit, and then the first valve is opened so that the fluid filled into the cylinder falls into the turbine to generate power by the fall. Pressure pumping power generation system using cylinders and pistons.

2. In paragraph 1, The above piston is made of a metal material having a relatively greater specific gravity than the specific gravity of the fluid, In the state where the second valve is locked, the piston is lowered by the load of the piston and the load of the fluid filled in the piston, and the fluid filled in the cylinder is discharged through the discharge portion and dropped into the turbine. After the fluid filled in the cylinder is discharged, the second valve is opened to discharge the fluid filled in the piston through the discharge portion and drop it into the turbine. Pressure pumping power generation system using cylinders and pistons.

3. In paragraph 2, It is characterized by further including a piston lifting unit that raises the piston descending from the inside of the cylinder to a certain height. Pressure pumping power generation system using cylinders and pistons.

4. In paragraph 3, The piston lifting part is characterized by comprising a chain connected to the upper end of the piston, a plurality of rollers supporting the chain, and an electric motor connected to the end of the chain to wind the chain. Pressure pumping power generation system using cylinders and pistons.

5. In paragraph 1, The outer surface of the piston is formed with guide rollers symmetrically arranged on the circumference, and is in close contact with the inner surface of the cylinder to guide the balanced elevation of the piston. Pressure pumping power generation system using cylinders and pistons.

6. In paragraph 1, An air buoyancy tube is attached to the bottom of the piston, In the state where the second valve is locked, the piston is lowered by the load of the piston and the load of the fluid filled in the piston, and the fluid filled in the cylinder is discharged through the discharge portion and dropped into the turbine. After the fluid filled in the cylinder is discharged, the second valve is opened while the first valve is closed to fill the fluid between the cylinder and the piston, thereby causing the piston to rise by the air lift tube. Pressure pumping power generation system using cylinders and pistons.

7. In paragraph 1, The cylinder is composed of a corrugated pipe that can contract and expand, and the piston is coupled to the upper end of the cylinder, so that the cylinder contracts and discharges the fluid by the load of the piston and the load of the fluid filled in the piston. Pressure pumping power generation system using cylinders and pistons.

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