Nanofluid conveying device, pumped storage power station and use method

Abstract

The invention relates to the technical field of pumped storage power stations, in particular to a nanofluid conveying device, a pumped storage power station and a using method. A nanofluid conveying device comprises a reciprocating circulating part, one end of the reciprocating circulating part is suitable for being arranged in a lower library body, the other end of the reciprocating circulating part is suitable for being arranged above an upper library body, the reciprocating circulating part is obliquely arranged, and a plurality of containing cavities are formed in the surface of the reciprocating circulating part; and the interior of each accommodating cavity is suitable for accommodating the nanofluid in the lower reservoir body. The invention provides a nanofluid conveying device, a pumped storage power station and a using method, and aims to solve the problem that although a reversible water turbine adopted in a traditional pumped storage technology can give consideration to power generation and water storage, the power generation and energy storage processes cannot be carried out at the same time.

Description

Technical Field

[0001] This invention relates to the field of pumped storage power station technology, specifically to a nanofluid transport device, a pumped storage power station, and a method of using it. Background Technology

[0002] Pumped storage is an important energy storage technology in power systems, playing a vital role in peak shaving and valley filling, renewable energy consumption, and grid security and stability. However, traditional pumped storage technology primarily uses water as the pumping medium, requiring the utilization of terrain elevation differences, which leads to stringent site selection requirements and large-scale construction.

[0003] Currently, traditional pumped storage technology, which uses reversible turbines to both generate electricity and store water, suffers from high costs and the inability to simultaneously perform both processes. Summary of the Invention

[0004] This invention provides a nanofluid transport device, a pumped storage power station, and a method of use to solve the problem that traditional pumped storage technology, which uses reversible turbines to both generate electricity and store water, cannot simultaneously perform the power generation and energy storage processes.

[0005] In a first aspect, the present invention provides a nanofluid transport device, comprising: A reciprocating circulation component, one end of which is adapted to be disposed in the lower reservoir and the other end of which is adapted to be disposed above the upper reservoir. The reciprocating circulation component is inclined and its surface is provided with a plurality of receiving cavities, each of which is adapted to contain nanofluid in the lower reservoir.

[0006] Compared to the traditional method of using reversible water turbines, which can both generate electricity and store water but cannot simultaneously perform pumping and energy storage, this application achieves separate delivery of nanofluids by setting up a nanofluid delivery device. This allows for the separate separation of the power generation and energy storage processes, enabling simultaneous power generation and energy storage.

[0007] In one optional embodiment, the device further includes a receiving assembly comprising two baffles and several angle-adjusting partitions. The two baffles are respectively disposed on both sides of the reciprocating circulation component, and the angle-adjusting partitions abut against the reciprocating circulation component. The angle-adjusting partitions are arranged perpendicularly to the baffles to form the receiving cavity.

[0008] In one optional embodiment, the system further includes a power component and a limiting key. One of the power components is connected to one of the angle adjustment partitions. The power component and the angle adjustment partition are respectively disposed on both sides of the baffle. The rotating end of the power component passes through the baffle and is connected to the angle adjustment partition through the limiting key.

[0009] In one optional embodiment, the contact end of the angle adjustment partition is arc-shaped, and the contact end abuts against the reciprocating component.

[0010] In one optional embodiment, the device further includes a drive unit, which includes a first drive member and a second drive member. The first drive member and the second drive member are located at both ends of the reciprocating component and are located on the side of the reciprocating component away from the angle adjustment partition.

[0011] Secondly, the present invention also provides a pumped storage power station, including the aforementioned nanofluid transport device.

[0012] In one alternative embodiment, the system further includes an upper reservoir and a lower reservoir, wherein the bottom surface of the upper reservoir is higher than the top surface of the lower reservoir, and the upper reservoir and the lower reservoir respectively contain nanofluids.

[0013] In one alternative embodiment, the system further includes an inclined tunnel, a horizontal tunnel, and a power generation chamber. The inclined tunnel connects the bottom of the upper reservoir to the power generation chamber, and the horizontal tunnel connects the power generation chamber to the lower reservoir. The power generation chamber is equipped with a generator.

[0014] In one alternative embodiment, a controller is further included, which is connected to the power component, the first drive component, and the second drive component via wiring.

[0015] Thirdly, the present invention also provides a method of using a nanofluid transport device, wherein a reciprocating circulation component transports nanofluid from a lower reservoir to an upper reservoir through a receiving cavity. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a pumped storage power station according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the positions of the power component, reciprocating circulation component, limit key, angle adjustment partition, and baffle in an embodiment of the present invention; Figure 3 for Figure 2 A magnified view of part A in the diagram.

[0018] Explanation of reference numerals in the attached drawings: 1. Nanofluid transport device; 101. Baffle; 102. Reciprocating circulation component; 103. Angle adjustment baffle; 104. First driving component; 105. Second driving component; 106. Rotating end; 107. Limit key; 2. Nanofluid; 3. Upper tank; 4. Lower tank; 5. Inclined tunnel; 6. Horizontal tunnel; 7. Power generation chamber; 8. Generator. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0021] According to an embodiment of the present invention, a nanofluid transport device 1 is provided, comprising: a reciprocating circulation member 102, one end of the reciprocating circulation member 102 being adapted to be disposed in a lower reservoir 4, and the other end being adapted to be disposed above an upper reservoir 3, the reciprocating circulation member 102 being inclinedly disposed, and the surface of the reciprocating circulation member 102 being provided with a plurality of receiving cavities, each of the receiving cavities being adapted to accommodate nanofluid 2 in the lower reservoir 4.

[0022] Compared to traditional methods that use reversible turbines to handle both power generation and water storage but cannot simultaneously perform pumping and energy storage, this application achieves separate delivery of nanofluid 2 by setting up a nanofluid delivery device 1. This allows for the separate separation of power generation and energy storage processes, making it suitable for special scenarios (such as emergency frequency control, instantaneous high-power disturbances, extreme conditions where the grid needs to provide both upward and downward rotational backup, black start path optimization, fine power balancing during islanded grid operation, ultra-short-term bidirectional power support for grids with a high proportion of renewable energy, and special periods when the water level of a pumped storage power station is close to the upper and lower dead water levels but still needs to maintain full power regulation capability). It allows for simultaneous power generation and energy storage processes.

[0023] In this embodiment, the reciprocating circulation component 102 is a reciprocating circulation belt, and the nanofluid 2 is a high-density nanofluid 2, which is a high-density fluid composed of iron-nickel alloy. It has a higher density than water and has good fluid performance and inertia when used as a pumping medium. After it stops, it will become a solidified gel. That is, the nanofluid 2 is solidified into a solidified gel in the lower tank 4.

[0024] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the device also includes a receiving assembly, which comprises two baffles 101 and several angle-adjustable partitions 103. The two baffles 101 are respectively disposed on both sides of the reciprocating circulation component 102, and the angle-adjustable partitions 103 abut against the reciprocating circulation component 102. The angle-adjustable partitions 103 are perpendicular to the baffles 101 to form a receiving cavity. In this embodiment, the two baffles 101 remain stationary, and the angle-adjustable partitions 103 are positioned between the two baffles 101. The receiving cavity is formed by the angle-adjustable partitions 103, the surface of the reciprocating circulation component 102, and the baffles 101 on both sides, and the receiving cavity is used to contain the nanofluid 2. It should be noted that the gap between the side of the angle-adjustable partition 103 and the side wall of the baffle 101 is very small, and the side of the angle-adjustable partition 103 and the belt are sealed to the baffle 101 by sealing members, so the nanofluid 2 cannot flow out through the gap between them.

[0025] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, it also includes a power component and a limiting key 107. One power component is connected to an angle adjustment partition 103. The power component and the angle adjustment partition 103 are respectively located on opposite sides of the baffle 101. The rotating end 106 of the power component passes through the baffle 101 and is connected to the angle adjustment partition 103 via the limiting key 107. The rotating end 106 of the power component drives the angle adjustment partition 103 to rotate, allowing the angle adjustment partition 103 to have different angles at different positions to adapt to the different properties of the nanofluid 2. It should be noted that in this embodiment, the fixed end of the power component is fixedly connected to either the reciprocating circulation component 102 or the baffle 101. Only one of the two baffles 101 is connected to the power component, and one power component is correspondingly set with one limiting key 107.

[0026] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the contact end of the angle adjustment baffle 103 is arc-shaped and abuts against the reciprocating circulation member 102. The arc-shaped contact end is designed to fit the surface of the reciprocating circulation member 102.

[0027] In this embodiment, as Figure 1As shown, when the bottom of the reciprocating circulation component 102 is above the nanofluid 2 in the lower tank 4, the angle adjustment baffle 103 enters the nanofluid 2 parallel to the surface of the reciprocating circulation component 102. The power component drives the angle adjustment baffle 103 to rotate, forming a space with the baffle 101 to accommodate the nanofluid 2. The angle adjustment baffle 101 moves to the top of the upper tank 3 as the reciprocating circulation component 102 moves, and the angle adjustment baffle 101 pours the nanofluid 2 into the upper tank 3. After unloading, the angle adjustment baffle 103 is adjusted to be parallel to the surface of the reciprocating circulation component 102 under the action of the power component, saving space and avoiding interference with other operations on the movement path. It should be noted that in this embodiment, the angle between the angle adjustment baffle 103 and the surface of the reciprocating circulation component 102 can be flexibly set and formed on the surface of the reciprocating circulation component 102 to adapt to pumping media with different degrees of solidification, ensuring the stable transmission of the solidified pumping media during the movement.

[0028] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, it also includes a drive unit, which includes a first drive component 104 and a second drive component 105. The first drive component 104 and the second drive component 105 are located at both ends of the reciprocating circulation component 102, and are located on the side of the reciprocating circulation component 102 away from the angle adjustment partition 103. Specifically, the first drive component 104 and the second drive component 105 are drive motors, respectively. Figure 1 As shown, the first driving member 104 and the second driving member 105 cooperate to drive the reciprocating circulation member 102 to move, and the first driving member 104 is located above the second driving member 105.

[0029] According to an embodiment of the present invention, in another aspect, a pumped storage power station is also provided, including the above-described nanofluid transport device 1.

[0030] In one embodiment, such as Figure 1 As shown, it also includes an upper reservoir 3 and a lower reservoir 4. The bottom surface of the upper reservoir 3 is higher than the top surface of the lower reservoir 4. The upper reservoir 3 and the lower reservoir 4 respectively contain nanofluid 2. The nanofluid 2 in the upper reservoir 3 flows into the lower reservoir 4, and the nanofluid 2 in the lower reservoir 4 is transported to the upper reservoir 3 through the nanofluid conveying device 1.

[0031] In one embodiment, such as Figure 1As shown, it also includes an inclined tunnel 5, a horizontal tunnel 6, and a power generation chamber 7. The inclined tunnel 5 connects the bottom of the upper reservoir 3 and the power generation chamber 7. The horizontal tunnel 6 connects the power generation chamber 7 and the lower reservoir 4. A generator 8 is installed in the power generation chamber 7. The nanofluid 2 in the upper reservoir 3 enters the power generation chamber 7 through the inclined tunnel 5. Under the action of gravity, the nanofluid 2 impacts the generator 8 in the power generation chamber 7 to generate electricity. Then, it enters the lower reservoir 4 through the horizontal tunnel 6. The nanofluid 2 in the lower reservoir 4 is transported to the upper reservoir 3 through the nanofluid conveying device 1.

[0032] In one embodiment, a controller is also included. The controller is connected to the power component, the first drive component 104, and the second drive component 105 respectively. The controller controls each power component to make the angle adjustment partition 103 be in different positions.

[0033] According to an embodiment of the present invention, in another aspect, a method of using the nanofluid transport device 1 is also provided, comprising the following steps: (1) Power generation process: High-density nanofluid 2 flows from the upper reservoir 3 through the inclined tunnel 5 through the power generation chamber 7, and the gravitational potential energy is converted into kinetic energy to drive the generator 8 to generate electricity. Then it enters the lower reservoir 4 through the horizontal tunnel 6 to stand still and solidify. (2) Energy storage process: The first drive unit 104 and the second drive unit 105 are started, driving the reciprocating circulation unit 102 to rotate. When the angle adjustment baffle 103 is about to move to the loading area of ​​the lower tank 4, the drive unit drives the angle adjustment baffle 103 to move, increasing the angle between the angle adjustment baffle 103 and the belt surface, automatically completing the loading process in the lower tank, and transporting the solidified pumping medium (nanofluid 2) to the upper tank for storage, thus completing the energy storage process. It should be noted that as the liquid level of the nanofluid in the lower tank 4 changes, the second drive unit 105 has a waterproof function and will be below the liquid level for part of the time.

[0034] The nanofluid transport device 1 and pumped storage power station provided by the present invention have the following advantages: (1) Compared with the traditional method of using reversible water turbines, which can both generate electricity and store water, but cannot simultaneously carry out pumping and energy storage processes, this application realizes the separate transport of nanofluid 2 by setting up nanofluid transport device 1, which can realize the separate separation of power generation and energy storage processes, and can carry out power generation and energy storage processes simultaneously; (2) High-density nanofluid 2 can form solidified gel when it is stationary, which is convenient to use a transportation method that is cheaper than reversible water turbines to realize the energy storage process. At the same time, it can realize the mode of separating power generation and energy storage processes in pumped storage power station, thereby improving the operating efficiency of the power station; (3) Using high-density nanofluid 2 as pumped storage medium has significant advantages. Its high density characteristics combined with good fluidity can greatly reduce the dependence on site selection terrain, reduce the scale of power station construction, and save the construction cost of power station; (4) When using high-density nanofluid 2 as pumped storage medium, the height difference requirement between the upper reservoir 3 and the lower reservoir 4 is smaller, the engineering construction scale is smaller, and the site selection requirements are lower.

[0035] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A nanofluid transport device, characterized in that, include: A reciprocating circulation component (102) is provided, one end of which is adapted to be disposed in the lower reservoir (4) and the other end is adapted to be disposed above the upper reservoir (3). The reciprocating circulation component (102) is inclined and the surface of the reciprocating circulation component (102) is provided with a plurality of receiving cavities, each of which is adapted to contain the nanofluid (2) in the lower reservoir (4).

2. The nanofluid transport device according to claim 1, characterized in that, It also includes a receiving component, which includes two baffles (101) and several angle-adjustable partitions (103). The two baffles (101) are respectively disposed on both sides of the reciprocating circulation component (102). The angle-adjustable partitions (103) abut against the reciprocating circulation component (102). The angle-adjustable partitions (103) are perpendicular to the baffles (101) to form the receiving cavity.

3. The nanofluid transport device according to claim 2, characterized in that, It also includes a power component and a limit key (107). One of the power components is connected to one of the angle adjustment partitions (103). The power component and the angle adjustment partition (103) are respectively disposed on both sides of the baffle (101). The rotating end (106) of the power component passes through the baffle (101) and is connected to the angle adjustment partition (103) through the limit key (107).

4. The nanofluid transport device according to claim 3, characterized in that, The contact end of the angle adjustment partition (103) is arc-shaped, and the contact end abuts against the reciprocating circulation component (102).

5. The nanofluid transport device according to claim 4, characterized in that, It also includes a drive unit, which includes a first drive member (104) and a second drive member (105). The first drive member (104) and the second drive member (105) are located at both ends of the reciprocating circulation member (102). The first drive member (104) and the second drive member (105) are located on the side of the reciprocating circulation member (102) away from the angle adjustment partition (103).

6. A pumped-storage power station, characterized in that, Includes the nanofluid transport device according to any one of claims 1-5.

7. The pumped storage power station according to claim 6, characterized in that, It also includes an upper reservoir (3) and a lower reservoir (4), the bottom surface of the upper reservoir (3) being higher than the top surface of the lower reservoir (4), and the upper reservoir (3) and the lower reservoir (4) respectively containing nanofluid (2).

8. The pumped storage power station according to claim 7, characterized in that, It also includes an inclined tunnel (5), a horizontal tunnel (6) and a power generation chamber (7). The inclined tunnel (5) connects the bottom of the upper reservoir (3) and the power generation chamber (7). The horizontal tunnel (6) connects the power generation chamber (7) and the lower reservoir (4). A generator (8) is installed in the power generation chamber (7).

9. The pumped storage power station according to claim 8, characterized in that, It also includes a controller, which is connected to the power component, the first drive component (104), and the second drive component (105) via circuits.

10. A method of using a nanofluid transport device, for using the nanofluid transport device of claim 1, characterized in that, The reciprocating circulation component (102) transports the nanofluid (2) in the lower chamber (4) to the upper chamber (3) through the receiving cavity.

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