A flood control device and method for water conservancy projects

Abstract

This invention discloses a flood control device and method for water conservancy projects, relating to the field of new energy building engineering technology. The device and method include: a power generation outlet pipe, each with a sliding sealing device at its injection end extending from the pool body. The sliding sealing device is configured to control the opening and closing of the injection end under buoyancy or pressure. The sliding sealing device includes: a guide rod, one end of which is located inside the injection end, and a float plate slidably connected to the guide rod. A pressure ring is connected to the inner wall of the injection end of the power generation outlet pipe. A float-controlled injection device is located above the guide plate, used to control the water flow into the power generation outlet pipe under buoyancy. This flood control device and method, through its chamber and discharge volume design, selectively activates siphon drainage only when rainfall reaches the warning level, automatically completing the injection and sealing of all power generation outlet pipes in one go, facilitating drainage using siphon action.

Description

Technical Field

[0001] This invention relates to the field of new energy building engineering technology, specifically to a flood control device and method for water conservancy projects. Background Technology

[0002] New energy building projects refer to projects that integrate renewable energy technologies such as solar, wind, geothermal, and biomass energy with building design, construction, and operation, aiming to achieve low-carbon, energy-efficient, and sustainable development of buildings. In new energy building projects involving water conservancy facilities or complex terrain, flood control in branch canals or rivers is a crucial aspect of ensuring project safety and preventing the impact of floods. During heavy rains or the flood season, when the water level in flood discharge channels or rivers approaches or exceeds the warning level, water must be drained promptly to prevent flooding from harming the new energy buildings or downstream areas.

[0003] Referring to Chinese Patent Publication No. CN118704393A, an ecological riverbank protection structure is disclosed. It includes a slope, mounting components, a hydroelectric generator, an aquaculture tank, a waste collection assembly, a waste transport assembly, protective components, and auxiliary components. The mounting components are positioned in the middle of the river channel. The hydroelectric generator, aquaculture tank, and waste collection assembly are located on the mounting components. The waste transport assembly and protective components are located on the slope. Multiple sets of auxiliary components are suspended along the waste transport end.

[0004] When using siphon action to assist drainage in flood discharge channels or pools, one end of the pipe is inserted into the pool body, while the other end is placed outside the pool and filled with water. The palm of the hand seals one end of the pipe outside the pool body and moves it down, creating a height difference between the two ends of the pipe to complete the siphon drainage. The number of pipes can be increased reasonably according to the total water volume in the pool and the rate of water increase. However, the pipes are long and thin with a small diameter, making it difficult to fill with water. Furthermore, each time water is filled and the pipe is moved down, it is necessary to drag the pipe, which is inconvenient to use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a flood control device and method for water conservancy projects. Through the design of divided chambers and liquid output, the timing of use is selected, and the siphon drainage can only be activated when the rainfall reaches the warning rainfall level. The device automatically completes the water filling and sealing of all power generation outlet pipes in one go, which facilitates the use of siphon effect to assist drainage.

[0006] Technical Solution: To achieve the above objectives, the present invention is implemented through the following technical solution: A flood control device for water conservancy projects, comprising: a power generation outlet pipe, one end of which extends into the pool body, and the other end of which is placed on a liquid guide plate. Each liquid injection end of the power generation outlet pipe extending out of the pool body is provided with a transfer sealing device, which is configured to control the opening and closing of the liquid injection end under the action of buoyancy or pressure. The transfer sealing device includes: a guide rod, one end of which is disposed inside the liquid injection end, and a float plate is slidably connected to the guide rod. A pressure ring is connected to the inner wall of the liquid injection end of the power generation outlet pipe. A float-controlled liquid injection device is provided above the liquid guide plate, which is used to control the water flow into the power generation outlet pipe under the action of buoyancy.

[0007] Preferably, the diameter of the pressure ring gradually decreases and then gradually increases along the direction of the guide rod diameter, the diameters at both ends of the pressure ring are equal, the diameter of the middle part of the pressure ring is smaller than the diameter of any other part of the pressure ring, the diameter of the middle part of the pressure ring is smaller than the diameter of the float plate, and the pressure ring is made of elastic material.

[0008] Preferably, a filter box is connected to the inner wall of one corner of the pool body, and filter holes are opened through the side of the filter box. Several equidistant positioning blocks are connected to the bottom wall of the filter box. A straight pipe is connected to one end of each power generation water outlet pipe that extends into the pool body. An elastic sealing ring is connected to the side of each power generation water outlet pipe. A first fixing plate is installed on one side of the pool body. Several equidistant first channels are opened through one side of the first fixing plate. Each first channel is connected to an elastic sealing ring. A second channel is opened through the middle of one side of the positioning block. The straight pipe is inserted into the second channel.

[0009] Preferably, the floating control liquid injection device includes: a power generation liquid collection box, which is connected to the top of the liquid guide plate away from the pool body via a connecting block; a partition is connected to the inner wall of the power generation liquid collection box, which divides the inner cavity of the power generation liquid collection box into a distribution chamber and a collection chamber; a floating component is connected to the bottom wall of the collection chamber; a first liquid outlet is provided through the bottom wall of the collection chamber; a filter plate is connected to the top of the power generation liquid collection box; a plurality of equidistantly distributed second liquid outlets are provided through the bottom wall of the distribution chamber; each second liquid outlet is located directly above the end of the liquid guide plate away from the pool body; an inlet is provided through the partition; and the diameter of the first liquid outlet is larger than the diameter of the second liquid outlet.

[0010] Preferably, the floating component includes: a float ball disposed in a liquid accumulation chamber; a positioning rod connected to the center of the bottom wall of the liquid accumulation chamber; the top end of the positioning rod passing through the inner wall of the float ball and slidably connected to the inner wall of the float ball; a support plate connected to the side of the middle part of the positioning rod; a baffle connected to the top end of the positioning rod; a sliding plate connected to the float ball via a third connecting plate; a guide rail connected to the side of the baffle away from the pool body; the guide rail slidably connected to the sliding plate; and the sliding plate used to control the opening and closing of the liquid inlet control.

[0011] Preferably, the angle between the axis of the straight pipe and the axis of the power generation outlet pipe is 10-20°, and the liquid injection end of the power generation outlet pipe is higher than the end of the power generation outlet pipe that extends into the pool.

[0012] Preferably, the transfer sealing device further includes: a second fixing plate, comprising several second fixing plates, one end of each second fixing plate near the pool body being connected to one end of the power generation water outlet pipe, and the other end of each second fixing plate away from the pool body being connected to the side of the guide rod away from the pool body via a first connecting plate. The other end of the guide rod is connected to several second connecting plates equidistantly distributed in a circumferential direction, and one side of each second connecting plate is connected to the inner wall of the power generation water outlet pipe. The diameter of the float plate is smaller than the inner diameter of the power generation water outlet pipe.

[0013] Preferably, when the rainfall is less than the warning rainfall, all the rainwater in the slurry cavity flows out from the first outlet hole; when the rainfall reaches the warning rainfall, the water level in the slurry cavity rises.

[0014] A flood control method includes a flood control device for a water conservancy project. One end of several power generation outlet pipes is fixed in a pool, and the other end is placed on a guide plate. When rainfall reaches a warning level, the water level in the accumulation chamber rises, increasing the buoyancy of a float. The float causes a sliding plate to move upwards, and the sliding plate no longer seals the inlet hole. Rainwater in the accumulation chamber flows sequentially through a distribution chamber, a second outlet chamber, and the guide plate into the power generation outlet pipes. Simultaneously, water is injected into all power generation outlet pipes, continuously increasing the amount of rainwater in them. The float plate, under the influence of buoyancy... The lower guide rod is moved upward along the axis and the pressure ring is pressed. During this process, the air in the power generation water outlet pipe is squeezed out and the power generation water outlet pipe is kept sealed. The liquid injection end of the power generation water outlet pipe is removed from the liquid guide plate and placed into the groove. The water in the power generation water outlet pipe is tilted downward. The liquid injection end of the power generation water outlet pipe changes from being higher than the end of the power generation water outlet pipe that extends into the pool to being lower than the end of the power generation water outlet pipe that extends into the pool. The float plate in the power generation water outlet pipe is removed. The siphon effect is used to assist drainage. The number of drainage power generation water outlet pipes is increased according to the drainage situation in the pool.

[0015] Beneficial Effects: This invention provides a flood control device and method for water conservancy projects. Compared with existing technologies, it has the following beneficial effects: 1. Through the design of divided chambers and liquid output, the timing of use is selected. Siphon drainage can only be activated when the rainfall reaches the warning rainfall level. It automatically completes the water injection and sealing of all power generation outlet pipes at one time, which facilitates the use of siphon effect to assist drainage. Water is injected into the power generation outlet pipe, and while expelling the air in the power generation outlet pipe, the buoyancy is used to lift the float plate, so that the float plate presses the pressure ring, which seals the liquid injection end of the power generation outlet pipe to achieve the siphon condition. The structure is simple, the cost is low, it is suitable for mass production, reduces manual operation, and saves time and labor.

[0016] 2. When removing the float from the power generation outlet pipe, there are two methods: Method 1: The center of the float on the side furthest from the pool can be connected to the bottom of the liquid guide pipe by a rope, and the float can be pulled out from the pressure ring by the rope; Method 2: The movement of the float is controlled by the buoyancy of the float, its own weight, and the pressure between the float and the pressure ring, so that the float can only be moved out from the middle of the pressure ring when it is subjected to downward pressure from the water. The first method requires manual operation, which increases manpower, but has low structural requirements and is easy to implement. The second method has a high degree of automation, but has high requirements for the precision of the fit between the structures.

[0017] 3. The diameter of the first outlet hole is 3 to 5 times the diameter of the second outlet hole. Only when the rainfall exceeds 50 mm within 6 hours, and the amount of rainwater entering the sump chamber per unit time is greater than the amount of rainwater discharged from the first outlet hole per unit time within a certain time period or duration, will the water level in the sump chamber rise. Only then can the float move the slide plate upward, allowing the rainwater in the sump chamber to enter the distribution chamber. This can prevent rainwater from entering the power generation outlet pipe through the distribution chamber during non-flood seasons or short-term heavy rain periods. Rainwater can only enter the power generation outlet pipe during flood seasons or continuous heavy rain. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present application and, together with the specification, further serve to explain the principles of the present application and enable those skilled in the art to implement and use the present application.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 for Figure 1 A cross-sectional view.

[0022] Figure 3 for Figure 1 A schematic diagram of the structure after removing the tank body and the outlet pipe.

[0023] Figure 4 This is a diagram showing the separation between the section containing the power generation outlet pipe and the float control injection device.

[0024] Figure 5 This is a schematic diagram of the structure of the section where the power generation outlet pipe is located.

[0025] Figure 6 This is a diagram showing the separation of the section where the power generation outlet pipe is located.

[0026] Figure 7 This is a structural diagram of the straight pipe, the power generation outlet pipe, the transfer sealing device, and the elastic sealing ring.

[0027] Figure 8 This is a schematic diagram of the relocation sealing device and part of the power generation outlet pipe.

[0028] Figure 9 This is a cross-sectional schematic diagram of an elastic sealing ring.

[0029] Figure 10 This is a schematic diagram of the structure of the float-controlled liquid injection device.

[0030] Figure 11 This is a cross-sectional schematic diagram of a float-controlled liquid injection device.

[0031] Figure 12 This is a schematic diagram of the floating component.

[0032] The reference numerals in the diagram are as follows: 1. Pool body; 21. Filter box; 22. Filter hole; 23. Positioning block; 24. Power generation outlet pipe; 25. First fixing plate; 26. First channel; 27. Straight pipe; 28. Elastic sealing ring; 29. ​​Second channel; 3. Transfer sealing device; 31. First connecting plate; 32. Guide rod; 33. Second connecting plate; 34. Pressure ring; 35. Second fixing plate; 36. Float plate; 4. Float control liquid injection device; 41. Connecting block; 42. Power generation liquid collection box; 43. Partition plate; 44. Filter plate; 45. First liquid outlet; 46. Floating component; 461. Float ball; 462. Positioning rod; 463. Support plate; 464. Baffle plate; 465. Third connecting plate; 466. Guide rail; 467. Slide plate; 47. Liquid distribution chamber; 48. Second liquid outlet; 49. Liquid collection chamber; 5. Liquid outlet pipe; 6. Guide plate.

[0033] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. 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.

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] Example 1: As Figure 1 - Figure 12 As shown, an embodiment of the present invention provides a flood control device for a water conservancy project, including: a power generation outlet pipe 24, one end of which extends into the pool body 1, and the other end of which is placed on a liquid guide plate 6. Each power generation outlet pipe 24 is provided with a transfer sealing device 3 at the liquid injection end extending out of the pool body 1. The transfer sealing device 3 is configured to control the opening and closing of the liquid injection end under the action of buoyancy or pressure. The transfer sealing device 3 includes: a guide rod 32, one end of which is disposed inside the liquid injection end. The guide rod 32 is slidably connected to a float plate 36. A pressure ring 34 is connected to the inner wall of the liquid injection end of the power generation outlet pipe 24. A float control liquid injection device 4 is provided above the liquid guide plate 6. The float control liquid injection device 4 is used to control the water flow into the power generation outlet pipe 24 under the action of buoyancy.

[0037] A filter box 21 is connected to the inner wall of one corner of the pool body 1. Filter holes 22 are opened through the side of the filter box 21. Several positioning blocks 23 are connected to the bottom wall of the filter box 21. A straight pipe 27 is connected to one end of each power generation water outlet pipe 24 that extends into the pool body 1. An elastic sealing ring 28 is connected to the side of each power generation water outlet pipe 24. A first fixing plate 25 is installed on one side of the pool body 1. Several first channels 26 are opened through the side of the first fixing plate 25. Each first channel 26 is connected to an elastic sealing ring 28. A second channel 29 is opened through the middle of one side of the positioning block 23. The straight pipe 27 is inserted into the second channel 29.

[0038] The floating control liquid injection device 4 includes: a power generation liquid collection box 42, which is connected to the top of the liquid guide plate 6 away from the pool body 1 via a connecting block 41. A partition 43 is connected to the inner wall of the power generation liquid collection box 42, which divides the inner cavity of the power generation liquid collection box 42 into a distribution chamber 47 and a collection chamber 49. A floating component 46 is connected to the bottom wall of the collection chamber 49. A first liquid outlet hole 45 is opened through the bottom wall of the collection chamber 49. A filter plate 44 is connected to the top of the power generation liquid collection box 42. Several equidistant second liquid outlet holes 48 are opened through the bottom wall of the distribution chamber 47. Each second liquid outlet hole 48 is located directly above the end of the liquid guide plate 6 away from the pool body 1. An inlet hole is opened through the partition 43. The diameter of the first liquid outlet hole 45 is larger than the diameter of the second liquid outlet hole 48.

[0039] The diameter of the first outlet 45 is 3 to 5 times the diameter of the second outlet 48, ensuring that the local rainfall within 6 hours does not exceed 50 mm, or has already reached 50 mm and the rainfall is unlikely to continue. In this case, all the rainwater entering the sump 49 can be discharged through the first outlet 45, preventing rainwater accumulation in the sump 49. Only when the rainfall within 6 hours exceeds 50 mm, and within a certain time period or duration, the amount of rainwater entering the sump 49 per unit time is greater than the amount of rainwater discharged from the first outlet 45 per unit time, will the water level in the sump 49 rise. Only then can the float 461 potentially move the slide plate 467 upward, allowing the rainwater in the sump 49 to enter the distribution chamber 47.

[0040] This can prevent rainwater from entering the power generation outlet pipe 24 through the liquid distribution chamber 47 during non-flood seasons or short periods of heavy rain. Rainwater can only enter the power generation outlet pipe 24 during flood seasons or periods of continuous heavy rain.

[0041] The floating component 46 includes: a float 461, which is disposed in the liquid accumulation chamber 49. A positioning rod 462 is connected to the center of the bottom wall of the liquid accumulation chamber 49. The top end of the positioning rod 462 passes through the inner wall of the float 461 and is slidably connected to the inner wall of the float 461. A support plate 463 is connected to the side of the middle part of the positioning rod 462. A baffle 464 is connected to the top end of the positioning rod 462. The float 461 is connected to a sliding plate 467 through a third connecting plate 465. A guide rail 466 is connected to the side of the partition 43 away from the pool body 1. The guide rail 466 is slidably connected to the sliding plate 467. The sliding plate 467 is used to control the opening and closing of the liquid inlet control.

[0042] The angle between the axis of the straight pipe 27 and the axis of the power generation outlet pipe 24 is 10-20°, and the liquid injection end of the power generation outlet pipe 24 is higher than the end of the power generation outlet pipe 24 that extends into the pool body 1.

[0043] The axis of the straight pipe 27 has a certain angle of inclination with the axis of the power generation water outlet pipe 24, and the power generation water outlet pipe 24 is inclined upward. The inclination is set to facilitate the filling of water into the power generation water outlet pipe 24 and the expulsion of air inside the power generation water outlet pipe 24.

[0044] When the angle between the axis of the straight pipe 27 and the axis of the power generation outlet pipe 24 is 10°, the tilt angle of the power generation outlet pipe 24 is small, which slows down the water inlet speed, reduces the degree of water collision with the pipe wall, weakens the vibration of the air inside the power generation outlet pipe 24, and reduces noise.

[0045] When the angle between the axis of the straight pipe 27 and the axis of the power generation outlet pipe 24 is 20°, the tilt angle of the power generation outlet pipe 24 is large and the tilt is increased. Under the action of gravity, the power of water flowing in the pipe is enhanced. According to the principle of fluid mechanics, within a certain range, the greater the tilt of the pipe, the greater the component of gravity on the water along the pipe direction, and the faster the water flow rate, thus accelerating the water injection speed. A larger tilt helps the water flow faster in the pipe, reduces the possibility of air accumulation in the pipe, and makes it easier for siphon to form.

[0046] The transfer sealing device 3 also includes: a second fixing plate 35, of which there are several second fixing plates 35. The end of each second fixing plate 35 near the pool body 1 is connected to one end of the power generation outlet pipe 24. The end of each second fixing plate 35 away from the pool body 1 is connected to the side of the guide rod 32 away from the pool body 1 through a first connecting plate 31. The other end of the guide rod 32 is connected to several second connecting plates 33 that are equidistantly distributed in the circumferential direction. One side of each second connecting plate 33 is connected to the inner wall of the power generation outlet pipe 24. The diameter of the float plate 36 is smaller than the inner diameter of the power generation outlet pipe 24.

[0047] An impulse turbine is installed in the drainage ditch below the power generation sump box 42. The impeller of the impulse turbine is coaxially connected to the generator. The water flowing out of the power generation sump box 42 and the power generation outlet pipe 24 will impact the impeller of the impulse turbine, thus assisting in power generation through the power generation sump box 42 and the power generation outlet pipe 24.

[0048] When the rainfall is less than the warning rainfall, all the rainwater in the sump 49 flows out from the first outlet 45. When the rainfall reaches the warning rainfall, the water level in the sump 49 rises.

[0049] A flood control method includes a flood control device for a water conservancy project. One end of several power generation outlet pipes 24 is fixed in a pool body 1, and the other end of the power generation outlet pipes 24 is placed on a guide plate 6. When the rainfall reaches the warning rainfall level, the water level in the accumulation chamber 49 rises, increasing the buoyancy of the float 461. The float 461 drives the sliding plate 467 upward, and the sliding plate 467 no longer seals the inlet hole. Rainwater in the accumulation chamber 49 flows sequentially through the distribution chamber 47, the second outlet hole 48, and the guide plate 6 into the power generation outlet pipes 24. Simultaneously, water is injected into all the power generation outlet pipes 24, and the amount of rainwater in the power generation outlet pipes 24 continuously increases. The float 36... Under the action of buoyancy, the guide rod 32 moves upward along the axis and presses the pressure ring 34. During this process, the air in the power generation water outlet pipe 24 is squeezed out and the power generation water outlet pipe 24 is kept sealed. The liquid injection end of the power generation water outlet pipe 24 is removed from the liquid guide plate 6 and placed in the trench. The water in the power generation water outlet pipe 24 tilts downward. The liquid injection end of the power generation water outlet pipe 24 changes from being higher than the end of the power generation water outlet pipe 24 that extends into the pool body 1 to being lower than the end of the power generation water outlet pipe 24 that extends into the pool body 1. The float plate 36 in the power generation water outlet pipe 24 is taken out. The siphon effect is used to assist drainage. The number of drainage power generation water outlet pipes 24 is increased according to the drainage situation in the pool.

[0050] In use, the straight pipe 27 is inserted into the second hole 29 of the positioning block 23, and one end of the straight pipe 27 and the generator water outlet pipe 24 are fixed in the pool water. The liquid injection end of the generator water outlet pipe 24 is placed on the liquid guide plate 6, and the generator water outlet pipe 24 is tilted upward with a small angle to facilitate water injection. When the rainfall reaches the warning rainfall level (when the rainfall is greater than 50 mm within 6 hours, or greater than 50 mm within a shorter period of time), the first liquid outlet 45 cannot drain all the rainwater in the accumulation chamber 49, the rainwater in the accumulation chamber 49 increases, the water level in the accumulation chamber 49 rises, the buoyancy of the float 461 increases, and the float 461 moves upward with the slide plate 467 through the third connecting plate 465. The slide plate 467 no longer seals the liquid inlet hole, and the rainwater in the accumulation chamber 49 flows into the distribution chamber 47 through the liquid inlet hole. The rainwater in the distribution chamber 47 flows into the liquid guide pipe through all the second liquid outlet holes 48. The liquid guide pipe is compatible with the generator water outlet pipe 24. Most of the rainwater in the liquid guide tube flows into the power generation outlet pipe 24. The design of sealing the inlet hole through the first outlet hole 45 and the sliding plate 467 prevents rainwater from entering the distribution chamber 47 and the power generation outlet pipe 24 when the rainfall is below the warning rainfall level. In normal use, water will not enter the injection end of the power generation outlet pipe 24. The low mass of the power generation outlet pipe 24 on the liquid guide plate 6 reduces the load on the liquid guide plate 6 and the power generation outlet pipe 24, preventing the need for clean water in the power generation outlet pipe 24 during flood season or heavy rain. Utilizing the chamber design and the discharge capacity of the first outlet hole 45, it automatically adapts to flood season or continuous heavy rain, only activating when the rainfall reaches the warning rainfall level, requiring no manual adjustment.

[0051] The water level in all the power generation outlet pipes 24 rises, forcing the air out of the pipes. This increases the buoyancy of the float plate 36 within the pipes 24, causing it to move upwards along the axis of the guide rod 32. The float plate 36 approaches and presses against the pressure ring 34, which is made of elastic material. The pressure point of the pressure ring 34 is concave, and the float plate 36 presses tightly against the pressure ring 34, sealing the injection end of the power generation outlet pipe 24. The center of the float plate 36 on the side away from the pool 1 can be connected to the bottom of the liquid guide pipe via a rope. The sealed power generation outlet pipe can then be manually opened. The injection end of pipe 24 is removed from the guide plate 6 and placed into the drainage ditch. The injection end of the power generation outlet pipe 24 changes from being higher than the end of the power generation outlet pipe 24 extending into the pool body 1 to being lower than the end of the power generation outlet pipe 24 extending into the pool body 1. Pull the rope to pull the float 36 out from the pressure ring 34. The float 36 moves to the outside of the power generation outlet pipe 24. At this time, the float 36 no longer blocks the opening of the injection end. Under the siphon effect, the water in the pool flows into the drainage ditch through the straight pipe 27 and the power generation outlet pipe 24, and the power generation outlet pipe 24 assists in draining the pool body 1.

[0052] The system automatically completes the water filling of all the generator outlet pipes 24 in one go, without the need for manual water filling or manual sealing of the water filling end of the generator outlet pipes 24, making it easy to use.

[0053] Based on the changes in the water volume in pool 1, the number of pipes can be increased or decreased. If the water volume in pool 1 is still increasing or the water level is decreasing slowly, the number of drainage and power generation outlet pipes 24 can be increased. If the water level in pool 1 reaches the normal water level line or the drainage volume is too large, the number of drainage and power generation outlet pipes 24 can be reduced.

[0054] Example 2: As Figure 1 - Figure 12 As shown, an embodiment of the present invention provides a flood control device for a water conservancy project. The diameter of the pressure ring 34 gradually decreases and then gradually increases along the direction of the diameter of the guide rod 32. The diameters at both ends of the pressure ring 34 are equal. The diameter of the middle part of the pressure ring 34 is smaller than the diameter of any other part of the pressure ring 34. The diameter of the middle part of the pressure ring 34 is smaller than the diameter of the float plate 36. The pressure ring 34 is made of elastic material.

[0055] When the water level in the power generation outlet pipe 24 rises, the buoyancy of the float plate 36 increases, and the float plate 36 moves upward along the axis of the guide rod 32. The float plate 36 slides along the arc surface of the pressure ring 34 and squeezes the pressure ring 34. The pressure ring 34 is made of elastic material, and the pressure point of the pressure ring 34 is continuously compressed. When the water level in the power generation outlet pipe 24 reaches the highest point, the float plate 36 can be locked in the middle of the pressure ring 34, and the pressure between the float plate 36 and the pressure ring 34 is large.

[0056] The injection end of the power generation outlet pipe 24 is moved from the guide plate 6 into the drainage ditch. The injection end of the power generation outlet pipe 24 moves from above the horizontal line to below the horizontal line. The float plate 36 changes from being located at the top of the power generation outlet pipe 24 to being located at the bottom of the power generation outlet pipe 24. During the movement of the power generation outlet pipe 24, the float plate 36 is subjected to buoyancy. However, the buoyancy of the float plate 36 may not be sufficient to overcome the weight of the float plate 36 itself and the pressure of the pressure ring 34. The float plate 36 cannot move upward. When the injection end of the power generation outlet pipe 24 is placed into the drainage ditch, the water in the power generation outlet pipe 24 squeezes the float plate 36 downward. The pressure on the float plate 36 is much greater than the buoyancy that the float plate 36 was previously subjected to when it was stuck in the middle of the pressure ring 34. The float plate 36 breaks through the blockage of the pressure ring 34 and moves along the guide rod 32 to the outside of the power generation outlet pipe 24. The float plate 36 no longer seals the injection end of the power generation outlet pipe 24.

[0057] When removing the float plate 36 from the power generation outlet pipe 24, there are two methods: Method 1: The center position of the float plate 36 on the side away from the pool body 1 can be connected to the bottom of the liquid guide pipe by a rope, and the float plate 36 can be pulled out from the pressure ring 34 by the rope; Method 2: The movement of the float plate 36 is controlled by the buoyancy of the float plate 36, its own weight, and the pressure between the float plate 36 and the pressure ring 34, so that the float plate 36 can only be moved out from the middle of the pressure ring 34 when it is subjected to the downward pressure of the water. The first method requires manual operation, which increases manpower, but the structural requirements are low and it is easy to implement. The second method has a high degree of automation, but the precision requirements for the fit between the structures are high.

[0058] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A flood prevention device for hydraulic engineering, characterized in that, include: A power generation outlet pipe (24) is provided. One end of the power generation outlet pipe (24) extends into the pool body (1), and the other end of the power generation outlet pipe (24) is placed on the liquid guide plate (6). Each power generation outlet pipe (24) is provided with a transfer sealing device (3) at the liquid injection end extending out of the pool body (1). The transfer sealing device (3) is configured to control the opening and closing of the liquid injection end under the action of buoyancy or pressure. The transfer sealing device (3) includes: a guide rod (32), one end of the guide rod (32) is located inside the liquid injection end, and the guide rod (32) is slidably connected to a float plate (36). The inner wall of the liquid injection end of the power generation outlet pipe (24) is connected to a pressure ring (34). The float plate (36) can be snapped into the middle of the pressure ring (34). A float control liquid injection device (4) is provided above the liquid guide plate (6). The float control liquid injection device (4) is used to control the water flow into the power generation outlet pipe (24) under the action of buoyancy. The floating control liquid injection device (4) includes: a power generation liquid collection box (42), which is connected to the top of the liquid guide plate (6) away from the pool body (1) via a connecting block (41). A partition (43) is connected to the inner wall of the power generation liquid collection box (42), which divides the inner cavity of the power generation liquid collection box (42) into a liquid distribution chamber (47) and a liquid collection chamber (49). A floating element (46) is connected to the bottom wall of the liquid collection chamber (49). The bottom wall is provided with a first liquid outlet hole (45), the top of the power generation liquid collection box (42) is connected with a filter plate (44), the bottom wall of the liquid distribution chamber (47) is provided with a number of equidistant second liquid outlet holes (48), each second liquid outlet hole (48) is located directly above a liquid guide plate (6) away from the end of the pool body (1), the partition plate (43) is provided with a liquid inlet hole, and the diameter of the first liquid outlet hole (45) is larger than the diameter of the second liquid outlet hole (48); The floating component (46) includes: a float (461), which is disposed in a liquid accumulation chamber (49). A positioning rod (462) is connected to the center of the bottom wall of the liquid accumulation chamber (49). The top end of the positioning rod (462) passes through the inner wall of the float (461) and is slidably connected to the inner wall of the float (461). A support plate (463) is connected to the side of the middle part of the positioning rod (462). A baffle (464) is connected to the top end of the positioning rod (462). The float (461) is connected to a sliding plate (467) through a third connecting plate (465). A guide rail (466) is connected to the side of the partition (43) away from the pool body (1). The guide rail (466) is slidably connected to the sliding plate (467). The sliding plate (467) is used to control the opening and closing of the liquid inlet.

2. The flood prevention device for hydraulic engineering according to claim 1, characterized in that: The diameter of the pressure ring (34) gradually decreases and then gradually increases along the axial direction of the guide rod (32). The diameters at both ends of the pressure ring (34) are equal. The diameter of the middle part of the pressure ring (34) is smaller than the diameter of any other part of the pressure ring (34). The diameter of the middle part of the pressure ring (34) is smaller than the diameter of the float plate (36). The pressure ring (34) is made of elastic material.

3. The flood prevention device for hydraulic engineering according to claim 1, characterized in that: A filter box (21) is connected to the inner wall of one corner of the pool body (1). A filter hole (22) is opened through the side of the filter box (21). Several positioning blocks (23) are connected to the bottom wall of the filter box (21). A straight pipe (27) is connected to one end of each power generation water outlet pipe (24) that extends into the pool body (1). An elastic sealing ring (28) is connected to the side of each power generation water outlet pipe (24). A first fixing plate (25) is installed on one side of the pool body (1). Several first channels (26) are opened through the side of the first fixing plate (25). Each first channel (26) is connected to an elastic sealing ring (28). A second channel (29) is opened through the middle of one side of the positioning block (23). The straight pipe (27) is inserted into the second channel (29).

4. The flood prevention device for hydraulic engineering according to claim 3, characterized in that: The angle between the axis of the straight pipe (27) and the axis of the power generation outlet pipe (24) is 10-20°, and the liquid injection end of the power generation outlet pipe (24) is higher than the end of the power generation outlet pipe (24) that extends into the pool body (1).

5. The hydraulic engineering flood prevention device according to claim 1, characterized in that: The transfer sealing device (3) further includes: a second fixing plate (35), which consists of several pieces. The end of each second fixing plate (35) near the pool body (1) is connected to the liquid injection section of the power generation water outlet pipe (24). The end of each second fixing plate (35) away from the pool body (1) is connected to the side of the guide rod (32) away from the pool body (1) through a first connecting plate (31). The other end of the guide rod (32) is connected to several second connecting plates (33) distributed equidistantly in the circumferential direction. One side of each second connecting plate (33) is connected to the inner wall of the power generation water outlet pipe (24). The diameter of the float plate (36) is smaller than the inner diameter of the power generation water outlet pipe (24).

6. The hydraulic engineering flood prevention device according to claim 1, characterized in that: When the rainfall is less than the warning rainfall, all the rainwater in the liquid accumulation chamber (49) flows out from the first liquid outlet (45). When the rainfall reaches the warning rainfall, the water level in the liquid accumulation chamber (49) rises.

7. A flood control method using the hydraulic engineering flood control device according to any one of claims 1 to 6, characterized by: One end of several power generation outlet pipes (24) is fixed in the pool body (1), and the other end of the power generation outlet pipes (24) is placed on the liquid guide plate (6). When the rainfall reaches the warning rainfall level, the water level in the accumulation chamber (49) rises, the buoyancy of the float (461) increases, the float (461) drives the slide plate (467) to move upward, the slide plate (467) no longer seals the liquid inlet hole, and the rainwater in the accumulation chamber (49) flows into the power generation outlet pipes (24) through the liquid distribution chamber (47), the second liquid outlet hole (48), and the liquid guide plate (6) in sequence. At the same time, water is injected into all the power generation outlet pipes (24), and the rainwater in the power generation outlet pipes (24) continues to increase. Under the action of buoyancy, the float plate (36) moves along the guide plate. The rod (32) moves upward along the axis and presses the pressure ring (34). During this process, the air in the power generation outlet pipe (24) is squeezed out and the power generation outlet pipe (24) is kept sealed. The liquid injection end of the power generation outlet pipe (24) is removed from the liquid guide plate (6) and placed in the groove. The water in the power generation outlet pipe (24) tilts downward. The liquid injection end of the power generation outlet pipe (24) changes from being higher than the end of the power generation outlet pipe (24) that extends into the pool body (1) to being lower than the end of the power generation outlet pipe (24) that extends into the pool body (1). The float plate (36) in the power generation outlet pipe (24) is taken out. The siphon effect is used to assist drainage. The number of power generation outlet pipes (24) is increased according to the drainage situation in the pool.

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