An ice-prevention device for a spillway gate of a hydroelectric power station

Abstract

This invention relates to the field of building mold technology, and particularly to an anti-icing device for a hydropower station spillway gate, including a limiting frame and a lifting mechanism. The anti-icing device also includes a gate body connected to the lifting mechanism. An installation cavity is provided at the rear end of the gate body, and a sealing plate is installed at the opening of the installation cavity. The installation hole used in this invention can be used to house the venting section, making it integral with the gate body. When not in operation, the sealing section seals the installation hole, effectively preventing sludge accumulation in the water from clogging the venting section. Furthermore, it eliminates the need to separate the venting section from the gate body, reducing the space occupied by the venting section. During operation, no cleaning of the venting section is required, reducing the preparation steps for anti-icing work. It also eliminates the need to reinstall the venting section on the gate body, effectively improving the convenience of anti-icing operation.

Description

Technical Field

[0001] This invention relates to the field of building mold technology, and in particular to an anti-icing device for a spillway gate of a hydropower station. Background Technology

[0002] A hydropower station spillway is an overflow and discharge structure with an open or breast wall-type inlet. It is mainly used to discharge floods exceeding the reservoir's storage capacity or to lower the reservoir's water level to ensure the safety of the project.

[0003] Hydropower stations located in cold regions or seasonally low-temperature environments may experience phenomena such as water freezing, ice flow, and freeze-thaw cycles, which can easily cause damage or adverse effects on hydropower engineering structures, facilities, and operational safety. Therefore, it is necessary to carry out anti-icing treatment on the water bodies.

[0004] Existing methods for preventing icing in hydropower stations typically employ bubble-based anti-icing. This involves releasing compressed air from a bubble generator into the pipeline, using the bubbles to propel warm water towards the water surface or ice cap, creating strong turbulent flow that melts the ice or inhibits its re-forming. However, existing bubble-based anti-icing equipment is submerged for extended periods, leading to the accumulation of sludge and blockage of the air outlets. This necessitates dredging during operation. Furthermore, to avoid sludge blockage, existing equipment is sometimes removed from the water when not in use and reinstalled on gates or dams when operational. Given the large size of hydropower stations and the extensive contact area between the water and the dam / gates, coupled with the length of the bubble-based anti-icing equipment, installation and dismantling become difficult. This not only increases the number of steps involved in the anti-icing process but also requires space for the dismantled equipment. Additionally, the operating range of each bubble generator in existing systems is not adjustable, necessitating a denser network of bubble generators to ensure effectiveness, further increasing the cost of the anti-icing operation.

[0005] Therefore, there is an urgent need to provide anti-icing equipment for hydropower station spillway gates that is simple and convenient to operate and has low anti-icing costs. Summary of the Invention

[0006] Therefore, it is necessary to provide an anti-icing device for a spillway gate of a hydropower station, which aims to solve the problems arising during the use of existing anti-icing devices.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an anti-icing device for a spillway gate of a hydropower station, comprising: a limit frame and a lifting mechanism.

[0008] The anti-icing equipment of the spillway gate of the hydropower station also includes the gate body, which is connected to the lifting mechanism. The rear end of the gate body has an installation cavity, and a sealing plate is installed at the opening of the installation cavity.

[0009] The front end of the gate body has multiple sets of vertically evenly distributed mounting holes. Each mounting hole set consists of multiple horizontally evenly distributed mounting holes, and the mounting holes are connected to the mounting cavity through connecting holes.

[0010] The anti-icing equipment of the spillway gate of the hydropower station also includes an aeration mechanism. Multiple aeration mechanisms are provided. Each aeration mechanism includes an installation part and a gas circulation part installed in a corresponding installation hole. At least two sets of exhaust parts are provided at the front end of the gas circulation part from the inside to the outside. Each set of exhaust parts consists of multiple circumferentially evenly distributed exhaust parts. A sealing part for sealing the installation hole is provided at the front end of the installation hole. The rear ends of the multiple gas circulation parts are connected to an air inlet.

[0011] The exhaust section includes an exhaust pipe that is hinged to the gas flow section. The exhaust pipe is connected to the gas flow section through a flexible pipe. A traction steel rope is fixedly connected to the outer surface of the exhaust pipe. Multiple exhaust holes are provided on the exhaust pipe.

[0012] The anti-icing equipment of the spillway gate of the hydropower station also includes a pushing mechanism, which is set in the installation cavity and is used to push the air inlet.

[0013] When not protected against freezing, the sealing part seals the mounting hole and prevents sludge from clogging the exhaust part; when protected against freezing, the pushing mechanism first separates the sealing part from the mounting hole, and then pushes the air inlet part, so that multiple gas flow parts push multiple exhaust parts out of the mounting hole and aerate.

[0014] Preferably, the pushing mechanism includes two pushing parts symmetrically arranged in the mounting cavity, and the two pushing parts are connected together to a plurality of vertically distributed traction rods.

[0015] Preferably, the mounting part includes an annular mounting plate disposed in the mounting hole and in contact with the vertical sidewall of the mounting hole. Two screws are symmetrically mounted at the rear end of the annular mounting plate. The rear ends of the screws pass through the gate body and are threadedly connected to nuts located in the mounting cavity.

[0016] Preferably, the gas flow section includes a connecting pipe that slides through the middle of the connecting hole and the middle of the annular mounting plate. A gas collecting frame with an annular structure is installed at the front end of the connecting pipe. The front frame wall of the gas collecting frame has multiple connecting holes that correspond one-to-one with multiple exhaust sections. A hinge seat with an arc-shaped structure is installed in the connecting holes.

[0017] Preferably, the hinge seat is hinged to the corresponding exhaust pipe, the hinge seat is fixedly connected to and communicates with the corresponding flexible pipe, and a through-hole pipe installed on the side of the hinge seat away from the axis of the air collection frame is provided, and a traction steel rope slides through the corresponding through-hole pipe and is fixedly connected to the annular mounting plate.

[0018] Preferably, the sealing section includes a guide frame installed at the front end of the gate body, a sealing plate slidably connected inside the guide frame, two connecting springs installed between the upper end of the sealing plate and the transverse section of the guide frame, a wire hole opened on the gate body above the mounting hole, a second traction steel rope slidably passing through the wire hole, and the two ends of the second traction steel rope being fixedly connected to the upper end of the corresponding sealing plate and the corresponding traction rod, respectively.

[0019] Preferably, the air intake includes a plurality of horizontally arranged air intake pipes evenly distributed from top to bottom, the air intake pipes being fixedly connected to a plurality of connecting pipes at the same height, and the plurality of air intake pipes having a connecting pipe installed on the same side end.

[0020] Preferably, the pushing part includes an installation groove formed in the top wall of the installation cavity, a driving component is installed in the installation groove, an L-shaped lifting frame is installed at the lower end of the driving component, a plurality of evenly distributed trapezoidal pushing blocks are installed at the front end of the vertical section of the lifting frame, the trapezoidal pushing blocks are fixedly connected to the corresponding traction rods, the inclined surface of the trapezoidal pushing blocks faces downward, and a reset block fixedly connected to the vertical section of the lifting frame is provided below the trapezoidal pushing blocks.

[0021] Preferably, the pushing part further includes multiple limiting rods respectively installed on the upper ends of multiple trapezoidal pushing blocks, and the front ends of the limiting rods are rotatably connected to rollers.

[0022] Preferably, the exhaust pipe has a hemispherical rear end, which is hinged to the hinge seat.

[0023] Preferably, an exhaust pipe 2 is installed and connected to the middle of the front end of the air collection frame, and air outlet holes are evenly arranged on the exhaust pipe 2.

[0024] In summary, the present invention has the following beneficial technical effects: 1. The mounting hole used in the present invention can be used to place the exhaust section, making it an integral part of the gate body. When not in operation, the sealing section seals the mounting hole, effectively preventing the accumulation of sludge in the water from clogging the exhaust section. Furthermore, it eliminates the need to separate the exhaust section from the gate body, reducing the space occupied by the exhaust section. During operation, there is no need to clean the exhaust section, reducing the preparation steps for anti-icing work. It also eliminates the need to reinstall the exhaust section on the gate body, effectively improving the convenience of anti-icing operation of the anti-icing equipment.

[0025] 2. The aeration mechanism and pushing mechanism used in this invention not only effectively increase the working range of the aeration mechanism and improve the anti-icing effect, but also reduce the laying density of the aeration mechanism, thereby reducing the cost of anti-icing equipment. Attached Figure Description

[0026] 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0028] Figure 2 A schematic diagram of the present invention, which eliminates the limiting frame, lifting mechanism and sealing plate, is shown.

[0029] Figure 3 A front view of the present invention is shown.

[0030] Figure 4 It shows Figure 3 Partial sectional view of AA.

[0031] Figure 5 A schematic diagram showing the connection between the sealing part and the traction rod of the present invention is shown.

[0032] Figure 6 A three-dimensional structural schematic diagram of the mounting section, gas flow section, and exhaust section of the present invention is shown.

[0033] Figure 7 A cross-sectional view of the mounting section, gas flow section, and exhaust section of the present invention is shown.

[0034] Figure 8 A schematic diagram of the working state of the present invention is shown.

[0035] The above-mentioned attached drawings include the following reference numerals: 1. Limiting frame; 2. Lifting mechanism; 20. Transmission module; 21. Threaded rod; 3. Gate body; 30. Mounting cavity; 31. Sealing plate; 32. Mounting hole; 33. Connecting hole; 4. Aeration mechanism; 40. Mounting part; 400. Annular mounting plate; 401. Screw; 41. Gas flow part; 410. Connecting pipe; 411. Gas collection frame; 412. Hinge seat; 413. Conduit; 414. Exhaust pipe II; 42. Exhaust part; 420. Exhaust... 421. Air tube 1; 422. Flexible tube; 423. Traction steel rope 1; 424. Exhaust port; 43. Sealing section; 430. Guide frame; 431. Sealing plate; 432. Connecting spring; 433. Threading hole; 434. Traction steel rope 2; 44. Air inlet; 440. Air inlet pipe; 441. Connecting pipe; 5. Pushing mechanism; 50. Pushing section; 500. Driving component; 501. Lifting frame; 502. Trapezoidal pushing block; 503. Reset block; 504. Limiting rod; 505. Roller; 51. Traction rod. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] See Figure 1 and Figure 3 An anti-icing device for a spillway gate of a hydropower station includes a limit frame 1 and a lifting mechanism 2.

[0038] See Figure 1 and Figure 3 The lifting mechanism 2 includes a transmission module 20 that is detachably mounted on the limit frame 1, and a threaded rod 21 is connected to the transmission module 20.

[0039] In actual operation, before starting work, the limit frame 1 is first installed on the existing concrete support of the spillway. The transmission module 20 is a motor device that is threadedly engaged with the threaded rod 21. Then, the transmission module 20 is installed on the limit frame 1 with bolts. The transmission module 20 controls the lifting and lowering of the threaded rod 21.

[0040] See Figure 1 , Figure 2 and Figure 4 The anti-icing equipment of the spillway gate of the hydropower station also includes the gate body 3. The lower end of the threaded rod 21 is hinged to the gate body 3. The rear end of the gate body 3 is provided with an installation cavity 30. A sealing plate 31 is fixedly installed at the opening of the installation cavity 30 by welding.

[0041] In actual operation, the gate body 3 is located in the spillway and the position of the gate body 3 in the spillway is changed by the lifting and lowering of the threaded rod 21 controlled by the transmission module 20, so as to realize the function of opening or closing the spillway. Before the gate body 3 is installed and used, the mounting cavity 30 and the sealing plate 31 are in a separated state.

[0042] See Figure 1 and Figure 5 The gate body 3 has multiple sets of vertically evenly distributed mounting holes at its front end. Each mounting hole set consists of multiple horizontally evenly distributed mounting holes 32. The mounting holes 32 are connected to the mounting cavity 30 through a connecting hole 33.

[0043] See Figure 1 , Figure 2 , Figure 5 and Figure 6The anti-icing equipment of the spillway gate of the hydropower station also includes an aeration mechanism 4. Multiple aeration mechanisms 4 are provided, and each aeration mechanism 4 includes an installation part 40 and a gas circulation part 41 provided in the corresponding installation hole 32.

[0044] See Figure 5 , Figure 6 and Figure 7 The mounting part 40 includes an annular mounting plate 400 disposed in the mounting hole 32 and attached to the vertical side wall of the mounting hole 32. Two screws 401 are symmetrically mounted at the rear end of the annular mounting plate 400. The rear end of the screws 401 passes through the gate body 3 and is threadedly connected to a nut located in the mounting cavity 30.

[0045] In practice, before installing the gate body 3, multiple annular mounting plates 400 are placed in the corresponding mounting holes 32. The annular mounting plates 400 drive two screws 401 through the gate body 3 and, through cooperation with nuts, achieve the function of limiting the installation of the annular mounting plates 400.

[0046] See Figure 5 , Figure 6 and Figure 7 The gas flow section 41 includes a connecting pipe 410 that slides through the middle of the connecting hole 33 and the middle of the annular mounting plate 400. A gas collecting frame 411 with an annular structure is installed at the front end of the connecting pipe 410. The front frame wall of the gas collecting frame 411 has multiple connecting holes that correspond one-to-one with multiple exhaust sections 42. A hinge seat 412 with an arc-shaped structure is installed in the connecting holes.

[0047] In specific operation, while the annular mounting plate 400 is being installed, the connecting pipe 410 and the gas collecting frame 411 are moved into the corresponding mounting hole 32. After the annular mounting plate 400 is installed, the connecting pipe 410 is slidably inserted into the connecting hole 33. A sealing ring is provided in the connecting hole 33 to seal the gap between the connecting pipe 410 and the connecting hole 33.

[0048] See Figures 4-7 The rear ends of the multiple gas flow sections 41 are connected to an air inlet section 44. The air inlet section 44 includes multiple horizontally arranged air inlet pipes 440 evenly distributed from top to bottom. The air inlet pipes 440 are fixedly connected to multiple connecting pipes 410 at the same height. The ends of the multiple air inlet pipes 440 on the same side are connected to a connecting pipe 441.

[0049] In specific operation, after multiple connecting pipes 410 are slidably inserted into the connecting hole 33, the multiple connecting pipes 410 are fixedly connected and connected to the corresponding multiple air inlet pipes 440 by welding. It should be noted that the connecting pipes 410 can also be fixedly connected and connected to the air inlet pipes 440 by existing quick-clamping mechanisms, which are not shown in this embodiment. Then, the connecting pipe 441 is connected to the existing high-pressure gas output equipment through existing flexible metal pipes. After the multiple air inlet pipes 440 and multiple connecting pipes 410 are installed, the sealing plate 31 is welded to the opening of the mounting cavity 30 by welding. Then, the gate body 3 is installed in the working position of the spillway.

[0050] See Figure 6 and Figure 7 The front end of the gas flow section 41 is provided with two sets of exhaust sections 42 from the inside to the outside. Each set of exhaust sections 42 consists of multiple circumferentially evenly distributed exhaust sections 42. Each exhaust section 42 includes an exhaust pipe 420 that is hinged to the gas flow section 41. The exhaust pipe 420 is connected to the gas flow section 41 through a flexible pipe 421. A traction steel rope 422 is fixedly connected to the outer surface of the exhaust pipe 420. Multiple exhaust holes 423 are opened on the exhaust pipe 420.

[0051] See Figure 6 and Figure 7 The hinge seat 412 is hinged to the corresponding exhaust pipe 420, and the hinge seat 412 is fixedly connected and communicates with the corresponding flexible pipe 421. A through pipe 413 is provided on the side of the hinge seat 412 away from the axis of the air collection frame 411, which is installed through the air collection frame 411. The traction steel rope 422 slides through the corresponding through pipe 413 and is fixedly connected to the annular mounting plate 400.

[0052] See Figure 6 and Figure 7 The exhaust pipe 414 is installed and connected to the middle of the front end of the air collection frame 411, and the exhaust pipe 414 is provided with air outlet holes evenly.

[0053] In actual operation, after multiple air collection frames 411 are installed, in the initial state, the air collection frame 411 drives two sets of exhaust parts 42 and exhaust pipe 414 to be located in the mounting hole 32, and multiple exhaust pipes 420 are in a state of mutual proximity. The traction steel rope 422 passes through the conduit 413 and is connected to the exhaust pipe 420 and the annular mounting plate 400 respectively. The traction steel rope 422 can be pulled to keep it taut by changing the distance between the multiple exhaust pipes 420 and the annular mounting plate 400. Then, the air collection frame 411 continues to move, and the multiple traction steel ropes 422 pull the multiple exhaust pipes 420 to rotate away from the axis of the air collection frame 411. The multiple exhaust pipes 420 are distributed in a dispersed manner, thereby increasing the working range of the multiple exhaust pipes 420.

[0054] See Figure 4 and Figure 5 The front end of the mounting hole 32 is provided with a sealing part 43 for sealing the mounting hole 32. The sealing part 43 includes a guide frame 430 installed at the front end of the gate body 3 by welding. A sealing plate 431 is slidably connected inside the guide frame 430. Two connecting springs 432 are installed between the upper end of the sealing plate 431 and the transverse section of the guide frame 430. A wire hole 433 is provided above the mounting hole 32 and is opened on the gate body 3. A second traction steel rope 434 slides through the wire hole 433.

[0055] In actual operation, without the need for antifreeze, the two connecting springs 432 move the lower end of the sealing plate 431 out of the guide frame 430 and seal the end of the mounting hole 32. When the gate body 3 is submerged in water for a long time, it can effectively prevent the sludge in the water from adhering and accumulating on the first exhaust pipe 420 and the second exhaust pipe 414, thereby preventing the blockage of multiple exhaust holes 423. When using antifreeze, there is no need to clean the first exhaust pipe 420 and the second exhaust pipe 414, reducing the preparation steps for bubble antifreeze. Furthermore, the aeration mechanism 4 only needs to be installed once. When not using antifreeze, there is no need to separate the aeration mechanism 4 from the gate body 3, and no extra space is needed to place the aeration mechanism 4. When using antifreeze multiple times, there is no need to install the aeration mechanism 4 from the gate body 3 multiple times. The operation steps for bubble antifreeze are simple and convenient.

[0056] See Figure 2 and Figure 5 The anti-icing equipment of the spillway gate of the hydropower station also includes a pushing mechanism 5, which is installed in the installation cavity 30 and is used to push the air intake 44.

[0057] See Figure 2 and Figure 5 The pushing mechanism 5 includes two pushing parts 50 symmetrically arranged in the mounting cavity 30. The two pushing parts 50 are connected to a plurality of vertically distributed traction rods 51. The two ends of the traction steel rope 434 are fixedly connected to the upper end of the corresponding sealing plate 431 and the corresponding traction rod 51, respectively.

[0058] See Figure 2 , Figure 4 and Figure 5 The pushing part 50 includes a mounting groove formed in the top wall of the mounting cavity 30. A driving component 500 is installed in the mounting groove. An L-shaped lifting frame 501 is installed at the lower end of the driving component 500. Multiple evenly distributed trapezoidal pushing blocks 502 are installed at the front end of the vertical section of the lifting frame 501. The trapezoidal pushing blocks 502 are fixedly connected to the corresponding traction rods 51.

[0059] In actual operation, the drive component 500 is the existing hydraulic push rod. Before operation, the drive component 500 is connected to the existing hydraulic pump. When antifreeze is performed in winter, the hydraulic pump is started. The hydraulic pump controls the two drive components 500 to drive the two lifting frames 501 to move downward. The two lifting frames 501 drive multiple trapezoidal push blocks 502 to move downward. The multiple trapezoidal push blocks 502 drive multiple traction rods 51 to move. The multiple traction rods 51 drive the corresponding multiple sealing plates 431 to rise through multiple traction steel ropes 434 and compress the two connecting springs 432 until the sealing plates 431 open the end of the mounting hole 32. At this time, the trapezoidal push blocks 502 are located on the upper side of the corresponding air inlet pipe 440.

[0060] See Figure 2 , Figure 4 and Figure 5 The trapezoidal push block 502 has its inclined surface facing downwards. Below the trapezoidal push block 502 is a reset block 503 that is fixedly connected to the vertical section of the lifting frame 501 and located below the corresponding air intake pipe 440. The reset block 503 is in an inclined state.

[0061] See Figure 2 , Figure 4 and Figure 5 The pushing part 50 also includes a plurality of limiting rods 504 respectively installed on the upper end of a plurality of trapezoidal pushing blocks 502, and the front end of the limiting rods 504 is rotatably connected to rollers 505.

[0062] See Figure 7 The rear end of the exhaust pipe 420 is hemispherical, and the rear end of the exhaust pipe 420 is hinged to the hinge seat 412.

[0063] In actual operation, after the mounting hole 32 is opened, the two drive components 500 continue to drive the two lifting frames 501 to move downwards. The lifting frames 501 drive the inclined surfaces of multiple trapezoidal pushing blocks 502 to push multiple air intake pipes 440 simultaneously. The multiple air intake pipes 440 move under force and push multiple connecting pipes 410. The multiple connecting pipes 410 move under force and drive multiple exhaust pipes 1 420 and exhaust pipe 2 414 out of the mounting hole 32 through the air collection frame 411. During this process, exhaust pipe 1 420 gradually moves away from the annular mounting plate. 400 and gradually taut the traction steel cable 422. As the exhaust pipe 420 moves, the taut traction steel cable 422 drives the exhaust pipe 420 to rotate away from the axis of the air collection frame 411 at the hinge seat 412 until the exhaust pipe 420 rotates to its maximum angle and then the drive component 500 stops working. At this time, all the exhaust pipes 420 and exhaust pipe 414 are moved out of the mounting hole 32, and the multiple annularly distributed exhaust pipes 420 on the same air collection frame 411 are in an outward diverging state (e.g., Figure 8As shown in the figure, this effectively increases the working range of multiple exhaust pipes 420, that is, the range of bubble generation, which effectively improves the effect of preventing water from freezing. In addition, the increased range of bubble generation can reduce the density of bubble generator arrangement, thereby reducing the use of bubble generators. At the same time, the trapezoidal push block 502 drives the limit rod 504 to move. The limit rod 504 slides on the front cavity wall of the mounting cavity 30 through the roller 505. The limit rod 504 cooperates with the corresponding air inlet pipe 440 to limit the movement of the lifting frame 501, preventing the lifting frame 501 from falling too far. The limit rod 504, roller 505 and lifting frame 501 cooperate to support the space of the mounting cavity 30 and improve the overall strength of the gate body 3.

[0064] After all the exhaust pipes 420 and 414 have been removed from the mounting hole 32, the high-pressure gas output device is activated. The high-pressure gas output device injects high-pressure gas into the connecting pipe 441 through a flexible metal tube. The connecting pipe 441 injects the high-pressure gas into multiple air inlet pipes 440 respectively. The high-pressure gas then enters the gas collection frame 411 through multiple connecting pipes 410. The high-pressure gas in the gas collection frame 411 enters multiple exhaust pipes 420 through multiple flexible connecting pipes 421. At the same time, the high-pressure gas in the gas collection frame 411 directly enters the exhaust pipe 414 and is then discharged through multiple exhaust holes 423 on the exhaust pipe 420 and multiple air outlet holes on the exhaust pipe 414, thus achieving the function of bubble antifreeze.

[0065] After the antifreeze period ends, the two drive components 500 drive the two lifting frames 501 to move upward. The two lifting frames 501 drive multiple reset blocks 503 to move upward. The reset blocks 503 push the corresponding air intake pipes 440. The air intake pipes 440 are reset by force and move multiple air collection frames 411 into the corresponding mounting holes 32 through multiple connecting pipes. The air collection frames 411 drive multiple exhaust pipes 1 420 and exhaust pipe 2 414 to move back into the mounting holes 32. During this process, the compressed connecting springs 432 reset and drive the sealing plate 431 to move downward and reseal the end of the mounting hole 32. The antifreeze work ends.

[0066] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0067] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An anti-icing device for a spillway gate of a hydropower station, comprising a limit frame and a lifting mechanism, characterized in that: The gate body is connected to the lifting mechanism, and an installation cavity is provided at the rear end of the gate body; The front end of the gate body has multiple sets of vertically distributed mounting holes, each set consisting of multiple horizontally distributed mounting holes, and the mounting holes are connected to the mounting cavity through connecting holes. The aeration mechanism is provided in multiple ways. The aeration mechanism includes an installation part and a gas circulation part provided in the corresponding installation hole. The front end of the gas circulation part is provided with at least two sets of exhaust parts from the inside to the outside. Each set of exhaust parts is composed of multiple circumferentially distributed exhaust parts. The front end of the installation hole is provided with a sealing part. The rear ends of the multiple gas circulation parts are connected to an air inlet. The exhaust section includes an exhaust pipe that is hinged to the gas flow section. The exhaust pipe is connected to the gas flow section through a flexible pipe. A traction steel rope is fixedly connected to the outer surface of the exhaust pipe. Multiple exhaust holes are opened on the exhaust pipe. The pushing mechanism is located inside the mounting cavity; When not protected against freezing, the sealing part seals the mounting hole and prevents sludge from clogging the exhaust part; when protected against freezing, the pushing mechanism first separates the sealing part from the mounting hole, and then pushes the air inlet part, so that multiple gas flow parts push multiple exhaust parts out of the mounting hole and aerate.

2. The anti-icing device for a hydropower station spillway gate according to claim 1, characterized in that: The pushing mechanism includes two pushing parts symmetrically arranged in the mounting cavity, and the two pushing parts are connected to a plurality of vertically distributed traction rods.

3. The anti-icing device for a hydropower station spillway gate according to claim 1, characterized in that: The mounting part includes an annular mounting plate disposed in the mounting hole and attached to the vertical side wall of the mounting hole. Two screws are symmetrically mounted at the rear end of the annular mounting plate. The rear end of the screws passes through the gate body and is threadedly connected to a nut located in the mounting cavity.

4. The anti-icing device for a hydropower station spillway gate according to claim 3, characterized in that: The gas flow section includes a connecting pipe that slides through the middle of the connecting hole and the middle of the annular mounting plate. A gas collecting frame with an annular structure is installed at the front end of the connecting pipe. The front frame wall of the gas collecting frame has multiple connecting holes that correspond one-to-one with multiple exhaust sections. A hinge seat with an arc structure is installed in the connecting hole.

5. The anti-icing device for a hydropower station spillway gate according to claim 4, characterized in that: The hinge seat is hinged to the corresponding exhaust pipe, and the hinge seat is fixedly connected to and communicates with the corresponding flexible pipe. A through-hole pipe is provided on the side of the hinge seat away from the axis of the air collection frame. A traction steel rope slides through the corresponding through-hole pipe and is fixedly connected to the annular mounting plate.

6. The anti-icing device for a hydropower station spillway gate according to claim 2, characterized in that: The sealing section includes a guide frame installed at the front end of the gate body. A sealing plate is slidably connected inside the guide frame. Two connecting springs are installed between the upper end of the sealing plate and the transverse section of the guide frame. A wire hole is provided above the mounting hole on the gate body. A second traction steel rope slides through the wire hole. The two ends of the second traction steel rope are fixedly connected to the upper end of the corresponding sealing plate and the corresponding traction rod, respectively.

7. The anti-icing device for a hydropower station spillway gate according to claim 4, characterized in that: The air intake section includes multiple horizontally arranged air intake pipes evenly distributed from top to bottom. The air intake pipes are fixedly connected to multiple connecting pipes at the same height, and the connecting pipes are installed on the same side end of the multiple air intake pipes.

8. The anti-icing device for a hydropower station spillway gate according to claim 2, characterized in that: The pushing part includes an installation groove formed in the top wall of the installation cavity. A driving component is installed in the installation groove. An L-shaped lifting frame is installed at the lower end of the driving component. Multiple evenly distributed trapezoidal pushing blocks are installed at the front end of the vertical section of the lifting frame. The trapezoidal pushing blocks are fixedly connected to the corresponding traction rods. The inclined surface of the trapezoidal pushing blocks faces downward. A reset block fixedly connected to the vertical section of the lifting frame is provided below the trapezoidal pushing blocks.

9. The anti-icing device for a hydropower station spillway gate according to claim 8, characterized in that: The pushing part also includes multiple limiting rods respectively installed on the upper ends of multiple trapezoidal pushing blocks, and the front end of the limiting rods is rotatably connected to a roller.

10. The anti-icing device for a hydropower station spillway gate according to claim 4, characterized in that: The exhaust pipe has a hemispherical rear end, which is hinged to the hinge seat.

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