Reservoir anti-icing device of pumped storage power station
By designing an anti-icing device with a wind blade wheel and a hanging hammer, the icing problem faced by the pumped storage power station reservoir in high altitude areas is solved, and a simple and effective anti-icing effect is achieved.
Patent Information
- Application Number
- CN202510580826.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-06-20
AI Technical Summary
Pumped storage power station reservoirs face the risk of icing in high altitude areas. The existing anti-icing measures are relatively complex and resource consumption, and there is a lack of simple and effective solutions.
An anti-icing device including multiple vertical poles, cross poles, air vane runners and hammers is designed. The wind blade wheel is driven by wind, driving the hammer to move up and down the water surface, forming a strong disturbance effect to prevent icing.
The device is simple in structure and convenient in implementation, which can effectively prevent the water surface from freezing, and the overall cost is low. Just laying a few hammers around the reservoir can solve the icing problem.
Smart Images
Figure CN120174770A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an anti-icing device for a reservoir of a pumped storage power station, belonging to the technical field of anti-icing of reservoirs in hydropower and water conservancy projects. Background Art
[0002] Pumped storage power stations have the functions of peak load regulation and frequency regulation, which can ensure the safety of the power system and promote the large-scale development and consumption of energy. Pumped storage power stations generally include upper reservoirs, lower reservoirs, water transmission systems, power plants, etc. The upper and lower reservoirs generally require a storage capacity of several million or tens of millions of cubic meters.
[0003] At present, more and more pumped storage power stations are located in high-altitude areas in southwest and northwest my country, facing unfavorable environments such as thin and dry air and large temperature differences between day and night. The daytime sunshine time is long, and the temperature rises and feels comfortable due to the influence of light. However, at night, the wind is strong and the temperature drops rapidly to below zero. The reservoirs of pumped storage power stations face the risk of freezing, especially the upper reservoir, which is located at an altitude of more than 4,000 meters. The anti-icing problem of the reservoir basin is prominent. Common anti-icing measures are mainly how to break ice or reduce the harm caused by ice debris to the project. For example, icebreakers and other de-icing devices are used to remove ice in time to avoid continuous thickening of the ice layer and large ice damage. It requires more manpower and resources and is inconvenient to implement. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide an anti-icing structure for a reservoir of a pumped storage power station, which is easier to implement.
[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an anti-icing device for a reservoir of a pumped storage power station comprises an energy storage reservoir, a plurality of vertical poles are arranged at intervals around the circumferential edge of the energy storage reservoir, a first cross bar is rotatably installed on the top of each vertical pole, one end of the first cross bar is vertically fixedly connected to the vertical pole, and the end of the vertical pole away from the first cross bar is vertically fixedly connected to the second cross bar, the first cross bar and the second cross bar are both arranged horizontally, and the first cross bar and the second cross bar are arranged on both sides of the vertical pole in an opposite arrangement, a fixing ring rotating around its axis is arranged on the second cross bar, the fixing ring is located above the water area corresponding to the energy storage reservoir, a suspension rope is connected to the fixing ring, and a hanging hammer is connected to the end of the hanging hammer away from the fixing ring; a fan blade rotor is rotatably installed on the top of the vertical pole, the rotating shaft of the fan blade rotor is transmission-connected to the first cross bar, and the rotating shaft of the fan blade rotor is equipped with a brake for controlling its start and stop; the normal water level of the energy storage reservoir is in the interval area between the highest point of the stroke of the hanging hammer and the lowest point of the stroke of the hanging hammer.
[0006] A further preferred solution is that an annular limiting groove is provided on the second cross bar, and the fixing ring is sleeved in the annular limiting groove.
[0007] A further preferred solution is that the fixing ring is a rope ring arranged in an integral structure with the suspension rope.
[0008] A further preferred solution is that a bearing is coaxially and fixedly arranged on the second cross bar, and the fixed ring is the outer ring of the bearing.
[0009] A further preferred solution is that the plumb bob is a hollow metal ball, and a plurality of water outlet holes communicating with its inner cavity are arranged on the outer surface of the plumb bob.
[0010] A further preferred solution is that it further includes a controller and a temperature sensor for detecting the ambient temperature, and both the temperature sensor and the brake are electrically connected to the controller.
[0011] A further preferred solution is that a circumferential ring road is provided around the energy storage reservoir, and the vertical poles are arranged on one side of the ring road close to the energy storage reservoir.
[0012] A further preferred solution is that a fence is arranged on one side of the ring road close to the energy storage reservoir, and the vertical poles also serve as the support columns of the fence.
[0013] A further preferred solution is that street lamps are arranged on the tops of the vertical poles.
[0014] The beneficial effects of the present invention are as follows: When the anti-icing device needs to work, it only needs to pre-open the brake so that the wind turbine runner can rotate normally under the action of wind power. At this time, the rotating shaft of the wind turbine runner can drive the first cross bar and the second cross bar to rotate synchronously, and then drive the plumb bob to reciprocate between the highest point and the lowest point of its stroke. Since the normal water storage level of the energy storage reservoir is in the interval area between the highest point and the lowest point of the plumb bob's stroke, that is, it is equivalent to the plumb bob can reciprocally move in the surface area of the water, continuously pat the water surface, forming a strong disturbance effect on the water surface, and can effectively prevent the water surface from icing. The structure of the present invention is simple and reliable, easy to implement, and the overall cost is relatively low. It only needs to pre-arrange a number of plumb bobs with the above installation structure around the energy storage reservoir. Description of the Drawings
[0015] Figure 1 It is the elevation layout schematic diagram of the present invention;
[0016] Figure 2 It is the overall installation structure schematic diagram of the plumb bob in the present invention;
[0017] Figure 3 It is the connection structure schematic diagram of the suspension rope and the second cross bar in the present invention.
[0018] Figure 4 It is the structure schematic diagram of the plumb bob in the present invention.
[0019] Marked in the figure are: energy storage reservoir 1, vertical pole 2, first cross bar 3, vertical pole 4, second cross bar 5, annular limit groove 51, lifting rope 6, fixing ring 61, hanging hammer 7, water outlet 71, fan impeller 8, ring road 9, excavation slope 10, retaining dam 11, normal water level of reservoir 12. DETAILED DESCRIPTION
[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] like Figures 1 to 4 As shown, the present invention includes an energy storage reservoir 1, which refers to the upper reservoir or the lower reservoir in a pumped storage power station, especially the upper reservoir. The present invention arranges a plurality of vertical poles 2 at intervals around the circumferential edge of the energy storage reservoir 1. The vertical poles 2 are generally arranged vertically. A first cross bar 3 is rotatably installed on the top of each vertical pole 2. The rotation installation of the first cross bar 3 is a conventional technology and can generally be achieved in the form of "bushing + bearing"; one end of the first cross bar 3 is vertically fixedly connected to the vertical pole 4, and the end of the vertical pole 4 away from the first cross bar 3 is vertically fixedly connected to the second cross bar 5. The first cross bar 3 and the second cross bar 5 are both arranged horizontally, and the first cross bar 3 and the second cross bar 5 are arranged on both sides of the vertical pole 4 in a relatively opposite arrangement (for example Figure 2 In the embodiment shown, the first crossbar 3 is on the left side of the vertical bar 4, and the second crossbar 5 is on the right side of the vertical bar 4. A fixing ring 61 rotating around its axis is provided on the second crossbar 5. The fixing ring 61 is located above the water area corresponding to the energy storage reservoir 1. A suspension rope 6 is connected to the fixing ring 61. The end of the suspension rope 6 away from the fixing ring 61 is connected to a hanging hammer 7. A fan wheel 8 is rotatably installed on the top of the vertical pole 2. The rotating shaft of the fan wheel 8 is transmission-connected to the first crossbar 3. The rotating shaft of the fan wheel 8 is equipped with a brake to control its start and stop. The normal water level of the energy storage reservoir 1 (i.e. Figure 1 The normal water level 12 of the reservoir shown in the figure is in the interval area between the highest point of the stroke of the hammer 7 and the lowest point of the stroke of the hammer 7. Since the fixed ring 61 is rotatably arranged relative to the second cross bar 5, when the second cross bar 5 rotates, the fixed ring 61 maintains a constant relative position. Under the action of the gravity of the hammer 7, the connection point of the suspension rope 6 on the fixed ring 61 is always located at the lowest point of the fixed ring 61, and the elevation position of the hammer 7 changes adaptively with the elevation position of the second cross bar 5. When the second cross bar 5 is at the highest point of its stroke, the hammer 7 is correspondingly at the highest point of its stroke; when the second cross bar 5 is at the lowest point of its stroke, the hammer 7 is correspondingly at the lowest point of its stroke. The design principle of the present invention is that a strong disturbance effect is formed on the water surface by the up and down movement of the hammer 7 at the water surface, which can effectively prevent the water surface from freezing. The preferred solution is that when the hammer 7 is at the highest point of its stroke, the hammer 7 is completely outside the water surface, and when the hammer 7 is at the lowest point of its stroke, the hammer 7 is completely submerged under the water surface; this solution can be achieved by reasonably selecting a value for the length of the vertical rod 4.
[0022] It is understandable that the above-mentioned various components involved in the present invention are all conventional materials in the art. For example, the vertical rod 2, the first cross bar 3, the vertical bar 4, and the second cross bar 5 can generally be made of steel that meets the design strength; the suspension rope 6 can generally be made of wire rope; the plumb bob 7 can be a counterweight with a certain weight, and its purpose is to enable the suspension rope 6 to maintain a vertical state. The wind turbine runner 8 generally consists of blades and a bushing, and the main structure can be implemented with reference to the blades of a horizontal axis wind turbine; the transmission mechanism between the rotating shaft of the wind turbine runner 8 and the first cross bar 3 can also be implemented with reference to existing conventional technologies, as long as the rotation of the wind turbine runner 8 can drive the first cross bar 3 to rotate synchronously. For example, the two can be directly fixedly connected as a whole, a key connection can also be used between the two, and a gear transmission mechanism can also be added between the two to achieve the connection. In a preferred embodiment, a clutch or a transmission for controlling the rotation speed of the first cross bar can also be added between the transmission mechanisms of the two; the brake can be a general component in the existing conventional technology for clamping and releasing the rotating shaft; when the rotating shaft of the wind turbine runner 8 is in a braking state, the wind power cannot drive, and the anti-icing device in the present invention does not work accordingly. When the ambient temperature is relatively low and the energy storage reservoir 1 may freeze, the rotating shaft of the wind turbine runner 8 is made to be in a released state in advance, and the energy storage reservoir 1 is made to be at the normal storage water level in advance. It should be noted that the present invention is mainly applicable to the upper reservoir of a pumped storage power station in high-altitude areas, where the wind energy is sufficient and the temperature difference between day and night is relatively large. During the day, the anti-icing device does not need to work, and the upper reservoir of the pumped storage power station can normally discharge water for power generation. At night, the pumped storage power station does not work, and the upper reservoir is made to be at the normal storage water level in advance before the anti-icing device is enabled. In addition, anti-icing only needs to prevent the water surface around from freezing; if the central part of the reservoir freezes and is not connected to the reservoir perimeter, during power generation, as the reservoir water level slowly drops, the ice cubes will also slowly drop to the reservoir bottom, which will not affect power generation or cause adverse effects. After the temperature rises during the day, these ice layers will naturally melt and disappear. Therefore, several plumb bobs 7 with the above installation structure are arranged in advance around the energy storage reservoir 1 in the present invention.
[0023] Taking the circumferential perimeter corresponding to the horizontal plane where the normal storage water level of a certain energy storage reservoir 1 is located as 1200 m as an example, after calculation, a single plumb bob 7 of the present invention can effectively disturb the water surface within a radius of 15 m. Then, 40 plumb bobs 7 can be arranged at intervals around the energy storage reservoir 1, thereby effectively solving the icing problem.
[0024] To make the structure more reliable, a circular limiting groove 51 is provided on the second cross bar 5, and the fixing ring 61 is sleeved in the circular limiting groove 51. The circular limiting groove 51 can play a circumferential limiting role on the fixing ring 61. This structural form is particularly suitable for the scheme where the fixing ring 61 is directly sleeved on the second cross bar 5. For example, the fixing ring 61 can directly be a rope loop arranged integrally with the suspension rope 6. The overall implementation of this structure is simpler. Generally, one end of the suspension rope 6 is directly wound around the part where the bottom wall of the circular limiting groove 51 is located, and then the end of the suspension rope 6 is connected and fixed to the body of the suspension rope 6 by using a rope clamp to form the above-mentioned rope loop. In some other preferred embodiments, a bearing can also be coaxially and fixedly arranged on the second cross bar 5, and the fixing ring 61 is the outer ring of the bearing. There are various ways to fix the bearing. For example, the inner ring of the bearing can be directly welded and fixed to the second cross bar 5. Additionally, the inner ring of the bearing can also be sleeved on the second cross bar 5 with a clearance fit, and then a corresponding axial limiting structure is designed on the second cross bar 5 for the bearing. For example, a circular protrusion is provided on one side and a limiting retaining ring is provided on the other side, or limiting retaining rings can be provided on both sides. The fixed connection between the fixing ring 61 and the suspension rope 6 is also a conventional technique. For example, the two can be welded and fixed, or a connection ring or a hook can be added to the fixing ring 61 to connect the suspension rope 6.
[0025] To further improve the anti-icing effect, the hanging weight 7 is a hollow metal ball (generally made of a steel ball or an iron ball), and several water outlet holes 71 communicating with its inner cavity are provided on the outer surface of the hanging weight 7. The specific number of the water outlet holes 71 can be flexibly designed according to the actual situation. In this way, when the hanging weight 7 leaves the water surface, the water inside it can flow out through the water outlet holes 71, hitting the water surface and disturbing the water surface better. When the hanging weight 7 is submerged below the water surface, the water in the energy storage reservoir 1 can continuously enter and fill the hanging weight 7.
[0026] In some preferred embodiments, the present invention can also be linked and controlled by using a temperature sensor. The specific scheme is that the present invention further includes a controller and a temperature sensor for detecting the ambient temperature. The temperature sensor and the brake are both electrically connected to the controller. The ambient temperature can be understood in a broad sense, which can be the air temperature or the surface water temperature of the energy storage reservoir 1 when it is at the normal storage water level. Those skilled in the art can reasonably determine the specific linkage control temperature threshold according to the actual situation. For example, it can be designed that when the temperature is lower than 0°C or 1°C, the brake automatically releases the rotating shaft of the wind blade runner 8, and the wind blade runner 8 can rotate normally driven by the wind, which is equivalent to the anti-icing device starting to operate. When the temperature is higher than 2°C or 3°C, the brake automatically locks the rotating shaft of the wind blade runner 8, which is equivalent to the anti-icing device stopping working.
[0027] Generally, a circumferential ring road 9 is provided around the energy storage reservoir 1. To further facilitate the implementation, the vertical pole 2 is arranged on the side of the ring road 9 close to the energy storage reservoir 1.
[0028] To better ensure safety, a fence is generally installed on the side of the reservoir road 9 close to the energy storage reservoir 1, and the vertical poles 2 also serve as the support columns for the fence, which can save the overall construction cost.
[0029] To save the overall construction cost, in some other preferred embodiments, street lights can also be installed on the top of the vertical poles 2, and the street lights are used for illuminating the reservoir road 9.
Claims
1. A pumped storage power station reservoir anti-icing device, comprising a storage reservoir (1), characterized in that: A plurality of vertical poles (2) are arranged at intervals around the circumferential edge of the energy storage reservoir (1), a first cross bar (3) is rotatably mounted on the top of each vertical pole (2), one end of the first cross bar (3) is vertically fixedly connected to a vertical pole (4), one end of the vertical pole (4) away from the first cross bar (3) is vertically fixedly connected to a second cross bar (5), the first cross bar (3) and the second cross bar (5) are both arranged horizontally, and the first cross bar (3) and the second cross bar (5) are arranged oppositely on both sides of the vertical pole (4), and the second cross bar (5) is provided with a fixed rod rotatable around its axis. A fixed ring (61) is located above the water area corresponding to the energy storage reservoir (1); a suspension rope (6) is connected to the fixed ring (61); and a suspension hammer (7) is connected to one end of the suspension rope (6) away from the fixed ring (61); a fan wheel (8) is rotatably mounted on the top of the vertical pole (2); the rotation shaft of the fan wheel (8) is transmission-connected to the first cross bar (3); and the rotation shaft of the fan wheel (8) is equipped with a brake for controlling the start and stop of the fan wheel; and the normal water level of the energy storage reservoir (1) is located in the interval area between the highest point of the stroke of the suspension hammer (7) and the lowest point of the stroke of the suspension hammer (7).
2. The anti-icing device for a pumped storage power station reservoir according to claim 1, characterized in that: An annular limiting groove (51) is provided on the second crossbar (5), and a fixing ring (61) is sleeved in the annular limiting groove (51).
3. The anti-icing device for a pumped storage power station reservoir according to claim 2, characterized in that: The fixing ring (61) is a rope ring arranged in an integral structure with the suspension rope (6).
4. The anti-icing device for a pumped storage power station reservoir according to claim 1, characterized in that: A bearing is coaxially fixedly arranged on the second crossbar (5), and the fixing ring (61) is the outer ring of the bearing.
5. The anti-icing device for a pumped storage power station reservoir according to claim 1, characterized in that: The hanging weight (7) is a hollow metal ball, and the outer surface of the hanging weight (7) is provided with a plurality of water outlet holes (71) connected to the inner cavity thereof.
6. The anti-icing device for a pumped storage power station reservoir according to claim 1, characterized in that: It also includes a controller and a temperature sensor for detecting the ambient temperature. The temperature sensor and the brake are both electrically connected to the controller.
7. The anti-icing device for a pumped storage power station reservoir according to any one of claims 1 to 6, characterized in that: The circumference of the energy storage reservoir (1) is provided with a reservoir ring road (9), and the vertical pole (2) is arranged on a side of the reservoir ring road (9) close to the energy storage reservoir (1).
8. The anti-icing device for a pumped storage power station reservoir according to claim 7, characterized in that: A fence is arranged on one side of the ring road (9) close to the energy storage reservoir (1), and the upright pole (2) also serves as a supporting column of the fence.
9. The anti-icing device for a pumped storage power station reservoir according to claim 7, characterized in that: A street lamp is arranged on the top of the vertical pole (2).