Hydropower station unit circulating cooling device

Abstract

The invention discloses a hydropower station unit circulating cooling device, which belongs to the technical field of hydropower station unit cooling and comprises a bottom plate, a unit body is placed in the center of the upper end of the bottom plate, a water tank is arranged on the side edge of the bottom plate, and four groups of cooling fans are arranged at the upper end of the side edge of the water tank. By arranging the cooling mechanism, the cooling efficiency of the hydropower station unit can be effectively improved, the cooling mechanism pumps out cooling liquid in the water tank through a circulating pump, the cooling liquid is fed into the cooling ring pipe through a liquid pumping pipe and a liquid inlet pipe, the cooling liquid flows between cooling pipe pieces, and the cooling efficiency of the hydropower station unit is improved. According to the design, the utilization rate of cooling liquid is increased, the stability of the unit body in the long-time operation process is ensured, and equipment faults caused by overheating are effectively prevented.

Description

Technical Field

[0001] This invention belongs to the field of hydropower station unit cooling technology, specifically relating to a hydropower station unit circulating cooling device. Background Technology

[0002] During the operation of a hydropower station, the cooling system of the generator set is a critical component ensuring stable equipment operation. Traditional hydropower station unit circulating cooling devices typically employ water cooling or air cooling, using coolant or air to remove the heat generated during unit operation, thereby maintaining the normal operating temperature of the equipment. However, as the power of hydropower station units continues to increase, the requirements for the cooling system are also becoming more stringent. Traditional cooling devices have gradually revealed some problems in practical applications, necessitating further improvement and optimization.

[0003] Traditional circulating cooling systems for hydropower generating units have several shortcomings in their design and operation. First, the installation and maintenance of the cooling structure are complex, and the cooling fins are not securely installed, making them prone to loosening during long-term operation and affecting the cooling effect. Second, traditional cooling systems lack flexible cold air blowing structures and cannot be height-adjusted according to the actual operating conditions of the unit, resulting in low cooling efficiency and difficulty in meeting the rapid cooling requirements of high-power units. These problems not only affect the operating efficiency of the unit but also increase equipment maintenance costs and downtime. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a circulating cooling device for hydropower station units, which features convenient installation and maintenance of the cooling structure and convenient height adjustment of the cold air blowing structure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a circulating cooling device for a hydropower station unit, comprising a base plate, wherein a unit body is placed at the upper center of the base plate, a water tank is provided on the side of the base plate, four sets of cooling fans are provided at the upper end of the side of the water tank, a semiconductor refrigeration chip is provided at the connection between the cooling fans and the water tank, a cold air blowing structure lifting mechanism is provided on the upper side of the base plate, and a cooling mechanism is provided on the outer surface of the unit body; The cooling mechanism includes a circulating pump. A circulating pump is installed at the lower side of the water tank. A liquid extraction pipe is installed at the lower end of the circulating pump and extends into the interior of the water tank. An inlet pipe is installed on the side of the circulating pump. A first cooling tube is installed on the outer surface of the unit body. A second cooling tube is installed on the side of the first cooling tube. The first cooling tube and the second cooling tube are fixedly connected by a cooling tube fixing assembly. A cooling ring pipe is wound around the other end of the inlet pipe on the outer surface of the first and second cooling tubes. A return pipe is installed at the other end of the cooling ring pipe and extends into the interior of the water tank. A valve is installed on the surface of the return pipe. A cooling tube clamping assembly is installed inside the base plate.

[0006] Preferably, the cooling tube clamping assembly includes a slot, the bottom plate has a slot on its side, a motor is provided on the side of the slot, a bidirectional lead screw is provided at the output end of the motor, two sets of nut blocks are symmetrically arranged on the surface of the bidirectional lead screw, and an arc-shaped fixing plate is provided at the upper end of the nut blocks.

[0007] Preferably, the inner side of the arc-shaped fixing plate is provided with anti-slip texture, and the nut block one has an internal thread corresponding to the bidirectional lead screw.

[0008] Preferably, the cooling tube fixing assembly includes a mounting groove, the side of the first cooling tube has a mounting groove, a connecting pipe is provided inside the mounting groove, the other end of the connecting pipe is provided with a sealing head, the side of the sealing head is provided with a spring inside the mounting groove, and the side of the second cooling tube has a sealing groove corresponding to the sealing head.

[0009] Preferably, a T-shaped slider is provided at the center of the side of the first cooling tube, and a T-shaped groove corresponding to the T-shaped slider is provided on the side of the second cooling tube.

[0010] Preferably, the lifting mechanism of the cold air blowing structure includes a support plate 1, a support plate 1 is provided on one side of the upper end of the base plate, a motor 2 is provided on the upper end of the support plate 1, a threaded rod is provided at the output end of the motor 2, a nut block 2 is threadedly connected to the surface of the threaded rod, an arc-shaped air duct is provided on the side of the nut block 2, a cold air inlet pipe is provided on one side of the arc-shaped air duct, multiple sets of air holes are opened on the inner side of the arc-shaped air duct, and a guide component is provided on the other side of the upper end of the base plate.

[0011] Preferably, the guide assembly includes a second support plate, which is provided on the other side of the upper end of the base plate. The second support plate has a sliding rod inside, and a slider is slidably connected to the surface of the sliding rod.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by incorporating a cooling mechanism, effectively improves the cooling efficiency of hydropower station units. The cooling mechanism uses a circulating pump to extract coolant from the water tank, which is then sent to the cooling ring pipe through the extraction pipe and inlet pipe. The coolant flows between the cooling tubes, absorbing the heat generated during the operation of the unit, and finally returns to the water tank through the return pipe, forming a circulating cooling system. This design not only improves the utilization rate of the coolant but also ensures the stability of the unit during long-term operation, effectively preventing equipment failures caused by overheating.

[0013] 2. This invention, by setting up a cold air blowing structure lifting mechanism, realizes the height adjustment of the cold air, thereby meeting the rapid cooling and temperature reduction requirements of different parts of the unit. The cold air blowing structure lifting mechanism is driven by motor two to rotate the threaded rod, which drives nut block two to move up and down along the threaded rod, thereby realizing the height adjustment of the arc-shaped air duct. Multiple sets of air holes on the inner side of the arc-shaped air duct can evenly blow cold air onto the surface of the unit. In conjunction with the cold air inlet pipe, the blowing position and intensity of the cold air can be flexibly adjusted according to the operating status and temperature distribution of the unit, so as to achieve rapid cooling and temperature reduction of the unit and improve the operating efficiency and stability of the unit.

[0014] 3. This invention, by setting up a cooling tube clamping assembly and a cooling tube fixing assembly, ensures the reliability and sealing of the cooling tubes after installation. The cooling tube clamping assembly is driven by a motor to rotate a bidirectional lead screw, which in turn moves a nut block, so that the arc-shaped fixing plate tightly clamps the cooling tube, ensuring its stability after installation. The cooling tube fixing assembly connects the cooling tubes through a connecting pipe and a sealing head. A spring provides elastic support, allowing the sealing head to fit tightly into the sealing groove, further enhancing the sealing between the cooling tubes and preventing coolant leakage. At the same time, it facilitates the installation and disassembly of the cooling tubes, improving maintenance efficiency. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the location of the circulating water pump in this invention; Figure 3 This is a perspective view of the cooling mechanism of the present invention; Figure 4 This is a perspective view of the cooling tube clamping assembly of the present invention; Figure 5 This is a perspective view of the cooling tube fixing assembly of the present invention; Figure 6 This is a perspective view of the cooling tube fixing assembly of the present invention from another angle; Figure 7 This is a perspective view of the lifting mechanism of the cold air blowing structure of the present invention; In the diagram: 1. Base plate; 2. Cold air blowing structure lifting mechanism; 21. Nut block two; 22. Threaded rod; 23. Support plate one; 24. Motor two; 25. Cold air inlet pipe; 26. Arc-shaped air duct; 27. Air hole; 28. Guide assembly; 281. Slider; 282. Slide rod; 283. Support plate two; 3. Unit body; 4. Water tank; 5. Cooling fan; 6. Cooling mechanism; 61. Valve; 62. Return pipe; 63. Circulation pump; 64. Liquid extraction pipe; 65. Liquid inlet. 66. Cooling ring tube; 67. Cooling tube clamping assembly; 671. Nut block one; 672. Motor one; 673. Slot; 674. Arc-shaped fixing plate; 675. Two-way lead screw; 68. Cooling tube one; 69. Cooling tube fixing assembly; 691. Connecting tube; 692. Mounting groove; 693. Spring; 694. Sealing head; 695. T-shaped slider; 696. T-shaped slide groove; 697. Sealing groove; 610. Cooling tube two; 7. Semiconductor refrigeration chip. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0017] Example 1 Please see Figure 1-7 The present invention provides the following technical solution: a circulating cooling device for a hydropower station unit, including a base plate 1, a unit body 3 placed at the upper center of the base plate 1, a water tank 4 arranged on the side of the base plate 1, four sets of cooling fans 5 arranged on the upper side of the water tank 4, a semiconductor cooling chip 7 arranged at the connection between the cooling fan 5 and the water tank 4, a cold air blowing structure lifting mechanism 2 arranged on the upper side of the base plate 1, and a cooling mechanism 6 arranged on the outer surface of the unit body 3; The cooling mechanism 6 includes a circulation pump 63. The circulation pump 63 is located at the lower side of the water tank 4. The lower end of the circulation pump 63 is provided with a liquid extraction pipe 64 that extends into the interior of the water tank 4. The side of the circulation pump 63 is provided with a liquid inlet pipe 65. The outer surface of the unit body 3 is provided with a first cooling tube 68. The side of the first cooling tube 68 is provided with a second cooling tube 610. The first cooling tube 68 and the second cooling tube 610 are fixedly connected by a cooling tube fixing assembly 69. The other end of the liquid inlet pipe 65 is located on the outer surface of the first cooling tube 68 and the second cooling tube 610 and is surrounded by a cooling ring pipe 66. The other end of the cooling ring pipe 66 is provided with a return pipe 62 that extends into the interior of the water tank 4. The surface of the return pipe 62 is provided with a valve 61. The interior of the base plate 1 is provided with a cooling tube clamping assembly 67.

[0018] Specifically, the cooling tube clamping assembly 67 includes a slot 673. The slot 673 is formed on the side of the base plate 1. A motor 672 is arranged on the side of the slot 673. A bidirectional lead screw 675 is provided at the output end of the motor 672. Two sets of nut blocks 671 are symmetrically arranged on the surface of the bidirectional lead screw 675. An arc-shaped fixing plate 674 is provided at the upper end of the nut blocks 671. By adopting the above technical solution, motor 672 drives the bidirectional lead screw 675 to rotate, and nut block 671 moves along the bidirectional lead screw 675, so that the arc-shaped fixing plate 674 clamps and fixes the cooling tube, ensuring the stability of the cooling tube after installation, preventing it from loosening during operation, and improving the cooling effect.

[0019] Specifically, the inner side of the arc-shaped fixing plate 674 is provided with anti-slip texture, and the nut block 671 has an internal thread corresponding to the bidirectional lead screw 675. By adopting the above technical solution, the anti-slip texture can increase the friction between the arc-shaped fixing plate 674 and the cooling tube, further enhancing the clamping firmness. The cooperation between the internal thread and the bidirectional lead screw 675 enables the nut block 671 to move precisely along the bidirectional lead screw 675, thereby achieving precise clamping and fixing of the cooling tube.

[0020] Specifically, the cooling tube fixing assembly 69 includes a mounting groove 692. The mounting groove 692 is formed inside the side of the first cooling tube 68. A connecting pipe 691 is disposed inside the mounting groove 692. A sealing head 694 is disposed at the other end of the connecting pipe 691. A spring 693 is disposed inside the mounting groove 692 on the side of the sealing head 694. A sealing groove 697 corresponding to the sealing head 694 is formed on the side of the second cooling tube 610. By adopting the above technical solution, cooling tube 68 and cooling tube 610 are connected by connecting pipe 691 and sealing head 694. Spring 693 provides elastic support, so that sealing head 694 fits tightly with sealing groove 697, ensuring the sealing between cooling tubes and preventing coolant leakage. At the same time, it facilitates the installation and disassembly of cooling tubes and improves maintenance efficiency.

[0021] Specifically, a T-shaped slider 695 is provided at the center of the side of cooling tube 68, and a T-shaped groove 696 corresponding to the T-shaped slider 695 is provided on the side of cooling tube 610. By adopting the above technical solution, the cooperation between the T-shaped slider 695 and the T-shaped groove 696 can limit the relative position between the first cooling tube 68 and the second cooling tube 610, ensure the stability of the cooling tubes during operation, prevent them from being displaced due to vibration or water flow impact, and further improve the reliability of the cooling system.

[0022] In this embodiment, the circulating pump 63 is first started, and the coolant is drawn from the water tank 4 through the extraction pipe 64, enters the cooling ring pipe 66 through the inlet pipe 65, and then flows between the first cooling tube 68 and the second cooling tube 610, absorbing the heat generated during the operation of the unit body 3. Finally, it returns to the water tank 4 through the return pipe 62, forming a circulating cooling system. At the same time, the motor 672 drives the bidirectional lead screw 675 to rotate, and the nut block 671 moves, so that the arc-shaped fixing plate 674 clamps the cooling tube, ensuring that it is firmly installed. The sealing head 694 in the cooling tube fixing assembly 69 fits tightly against the sealing groove 697 under the action of the spring 693, ensuring the sealed flow of the coolant. Through this design of the cooling mechanism 6, the cooling efficiency of the hydropower station unit can be effectively improved, ensuring the stability of the unit during long-term operation.

[0023] Example 2 The difference between this embodiment and Embodiment 1 is that: the cold air blowing structure lifting mechanism 2 includes a support plate 23, which is provided on one side of the upper end of the base plate 1. A motor 24 is provided on the upper end of the support plate 23. A threaded rod 22 is provided at the output end of the motor 24. A nut block 21 is threadedly connected to the surface of the threaded rod 22. An arc-shaped air duct 26 is provided on the side of the nut block 21. A cold air inlet pipe 25 is provided on one side of the arc-shaped air duct 26. Multiple sets of air holes 27 are opened on the inner side of the arc-shaped air duct 26. A guide assembly 28 is provided on the other side of the upper end of the base plate 1. By adopting the above technical solution, motor 24 drives threaded rod 22 to rotate, and nut block 21 moves up and down along threaded rod 22, driving arc-shaped air duct 26 to achieve height adjustment. Thus, the blowing position of cold air can be flexibly adjusted according to different parts of the unit body 3 and actual operating conditions to achieve rapid cooling and improve the operating efficiency and stability of the unit.

[0024] Specifically, the guide assembly 28 includes a second support plate 283. The second support plate 283 is provided on the other side of the upper end of the base plate 1. A slide rod 282 is provided inside the second support plate 283, and a slider 281 is slidably connected to the surface of the slide rod 282. By adopting the above technical solution, the slider 281 slides along the slide bar 282, providing guidance for the height adjustment of the arc-shaped air duct 26, ensuring the stability and accuracy of its lifting process, preventing the arc-shaped air duct 26 from deviating or shaking during movement, and further improving the reliability of the lifting mechanism 2 of the cold air blowing structure.

[0025] In this embodiment, based on the operating status and temperature distribution of the unit body 3, motor 24 is started. Motor 24 drives the threaded rod 22 to rotate, and nut block 21 moves up and down along the threaded rod 22, thereby driving the arc-shaped air duct 26 to rise and fall, adjusting the blowing position of the cold air. At the same time, slider 281 slides along slide rod 282, providing stable guidance for the movement of arc-shaped air duct 26. Cold air enters arc-shaped air duct 26 through cold air inlet pipe 25, and then blows onto the surface of the unit body 3 from air hole 27, realizing rapid cooling of the unit. Through this design of the cold air blowing structure lifting mechanism 2, the cooling needs of different parts of the hydropower station unit can be effectively met, the cooling efficiency can be improved, and the safe and stable operation of the unit can be ensured.

[0026] The working principle and usage process of this invention: When in use, the circulating pump 63 is first started. Coolant is drawn from the water tank 4 through the extraction pipe 64, enters the cooling ring pipe 66 through the inlet pipe 65, and then flows between cooling tube 1 68 and cooling tube 2 610, absorbing the heat generated during the operation of the unit body 3. Finally, it returns to the water tank 4 through the return pipe 62, forming a circulating cooling system. Simultaneously, the motor 672 drives the bidirectional lead screw 675 to rotate, and the nut block 671 moves, causing the arc-shaped fixing plate 674 to clamp the cooling tubes, ensuring their secure installation. The sealing head 694 in the cooling tube fixing assembly 69 tightly fits the sealing groove 697 under the action of the spring 693, ensuring the sealed flow of coolant. Through this design of the cooling mechanism 6, the cooling efficiency can be effectively improved. The high cooling efficiency of the hydropower station unit ensures its stability during long-term operation. Based on the operating status and temperature distribution of the unit body 3, motor 24 is started, driving the threaded rod 22 to rotate. Nut block 21 moves up and down along the threaded rod 22, thereby raising and lowering the arc-shaped air duct 26 to adjust the blowing position of the cold air. Simultaneously, slider 281 slides along slide rod 282, providing stable guidance for the movement of the arc-shaped air duct 26. Cold air enters the arc-shaped air duct 26 through the cold air inlet pipe 25 and is then blown onto the surface of the unit body 3 through the air hole 27, achieving rapid cooling of the unit. This design of the cold air blowing structure lifting mechanism 2 effectively meets the cooling needs of different parts of the hydropower station unit, improves cooling efficiency, and ensures the safe and stable operation of the unit.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating cooling device for a hydropower station unit, comprising a base plate (1), wherein a unit body (3) is placed at the upper center of the base plate (1), a water tank (4) is provided on the side of the base plate (1), four sets of cooling fans (5) are provided at the upper end of the side of the water tank (4), and a semiconductor cooling chip (7) is provided at the connection between the cooling fan (5) and the water tank (4), characterized in that: A cold air blowing structure lifting mechanism (2) is provided on the upper side of the base plate (1), and a cooling mechanism (6) is provided on the outer surface of the unit body (3). The cooling mechanism (6) includes a circulating pump (63). The circulating pump (63) is located at the lower side of the water tank (4). The lower end of the circulating pump (63) is provided with a liquid extraction pipe (64) that extends into the interior of the water tank (4). The side of the circulating pump (63) is provided with a liquid inlet pipe (65). The outer surface of the unit body (3) is provided with a first cooling tube (68). The side of the first cooling tube (68) is provided with a second cooling tube (610). The first cooling tube (68) and the second cooling tube (610) are connected. The two tube segments (610) are fixedly connected by a cooling tube segment fixing assembly (69). The other end of the liquid inlet pipe (65) is located on the outer surface of the first cooling tube segment (68) and the second cooling tube segment (610) and a cooling ring pipe (66) is wrapped around it. The other end of the cooling ring pipe (66) is provided with a return pipe (62) and extends into the interior of the water tank (4). A valve (61) is provided on the surface of the return pipe (62). A cooling tube segment clamping assembly (67) is provided inside the base plate (1).

2. The circulating cooling device for a hydropower station unit according to claim 1, characterized in that: The cooling tube clamping assembly (67) includes a slot (673). The bottom plate (1) has a slot (673) on its side. A motor (672) is provided on the side of the slot (673). A two-way lead screw (675) is provided at the output end of the motor (672). Two sets of nut blocks (671) are symmetrically provided on the surface of the two-way lead screw (675). An arc-shaped fixing plate (674) is provided at the upper end of the nut blocks (671).

3. The circulating cooling device for a hydropower station unit according to claim 2, characterized in that: The inner side of the arc-shaped fixing plate (674) is provided with anti-slip texture, and the nut block (671) is provided with an internal thread corresponding to the bidirectional lead screw (675).

4. The circulating cooling device for a hydropower station unit according to claim 1, characterized in that: The cooling tube fixing assembly (69) includes a mounting groove (692). The mounting groove (692) is provided inside the side of the first cooling tube (68). A connecting pipe (691) is provided inside the mounting groove (692). A sealing head (694) is provided at the other end of the connecting pipe (691). A spring (693) is provided inside the mounting groove (692) on the side of the sealing head (694). A sealing groove (697) corresponding to the sealing head (694) is provided on the side of the second cooling tube (610).

5. A circulating cooling device for a hydropower station unit according to claim 1, characterized in that: A T-shaped slider (695) is provided at the center of the side of the first cooling tube (68), and a T-shaped groove (696) corresponding to the T-shaped slider (695) is provided on the side of the second cooling tube (610).

6. A circulating cooling device for a hydropower station unit according to claim 1, characterized in that: The cold air blowing structure lifting mechanism (2) includes a support plate (23), a support plate (23) is provided on one side of the upper end of the base plate (1), a motor (24) is provided on the upper end of the support plate (23), a threaded rod (22) is provided at the output end of the motor (24), a nut block (21) is threaded on the surface of the threaded rod (22), an arc-shaped air duct (26) is provided on the side of the nut block (21), a cold air inlet pipe (25) is provided on one side of the arc-shaped air duct (26), multiple sets of air holes (27) are opened on the inner side of the arc-shaped air duct (26), and a guide component (28) is provided on the other side of the upper end of the base plate (1).

7. A circulating cooling device for a hydropower station unit according to claim 6, characterized in that: The guide assembly (28) includes a second support plate (283). The second support plate (283) is provided on the other side of the upper end of the base plate (1). A slide rod (282) is provided inside the second support plate (283). A slider (281) is slidably connected to the surface of the slide rod (282).

Images