Cooling device of hydroelectric generating set
Through the air-cooled cooling structure of the cooling cover and cooling box, combined with the supercharger and return module, the cooling medium circulation is optimized, and the problem of low cooling efficiency of hydroelectric generator sets is solved, achieving high-efficiency and low-energy cooling effect, avoiding equipment overheating.
Patent Information
- Application Number
- CN202422211044.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The cooling system of existing hydroelectric generator sets has low cooling efficiency and high energy consumption. Its cooling effect is not ideal in high temperature environments or long-term continuous operation, which can easily cause equipment overheating failure and poor adaptability.
The cooling cover and cooling box structure is adopted, and the fan is driven by the generator rotor to generate air-cooling and cooling, and the cooling medium circulation is optimized through the supercharger and return components, and combined with an explosion-proof cover to prevent the cooling box from exploded, simplifying the structure.
Improves cooling efficiency, reduces the use of additional motors, enhances the adaptability of the system, avoids damage to the cooling chamber, and reduces energy consumption.
Smart Images
Figure CN223052888U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hydraulic generator set cooling, and particularly relates to a hydraulic generator set cooling device. Background Art
[0002] As a kind of clean energy, hydropower has been widely used in recent years. However, a large amount of heat is generated during the operation of hydraulic generator sets. If not cooled in time, it will seriously affect the equipment efficiency and service life. At present, the commonly used cooling methods are mostly air cooling or water cooling, but there are problems such as low cooling efficiency and high energy consumption. The traditional cooling systems of hydraulic generator sets usually adopt natural air cooling or circulating water cooling systems. Although these systems can achieve a certain cooling effect, under high-temperature environments or long-term continuous working conditions, the cooling effect is often not ideal, and even equipment overheating failures may occur. The existing cooling systems generally have problems such as low cooling efficiency, high energy consumption, high maintenance costs, and poor adaptability to complex and changeable hydropower environments.
[0003] Chinese patent with publication number CN218352351 U discloses a cooling device for a hydropower generation set. A heat conduction box is arranged outside the heat exchange box, a heat dissipation box is arranged outside the heat conduction box, a blower box is installed on the outer wall of the heat dissipation box, a blower is installed on the outer wall of the blower box, a protective net is arranged on the outer wall of the blower, and the protective net is fixedly connected with the blower box. A liquid inlet cover is installed at the top of the heat exchange box, a liquid inlet pipe is arranged at the top of the liquid inlet cover, and the liquid inlet pipe extends into the interior of the heat dissipation box. A liquid extraction pipe is arranged on one side of the top of the heat exchange box away from the liquid inlet cover, a circulating pump is installed at the top of the liquid extraction pipe, an outlet pipe is arranged at the top of the circulating pump, and one end of the outlet pipe extends into the interior of the heat dissipation box. This device improves the heat conduction efficiency of the heat exchange box and the heat conduction box, realizes the elastic and tight fitting of the cooling device of the hydropower generation set and the generator, and improves the heat conduction efficiency of the generator. However, the structure of this device is complex. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a hydraulic generator set cooling device with a simple structure and improved cooling efficiency for the above-mentioned existing technical problems.
[0005] In view of this, the utility model provides a hydraulic generator set cooling device, which includes a generator, and also includes a cooling cover sleeved on the generator; an output shaft passing through the cooling cover and coaxially connecting the rotor of the generator; a fan coaxially connected to the output shaft; a cooling box arranged in front of the fan; and the interior of the cooling box is connected to the interior of the cooling cover.
[0006] In this technical solution, the cooling cover exchanges heat with the generator through the cooling medium inside itself. The cooling medium in the cooling cover and the cooling box circulates. During the power generation process of the generator, the rotor rotates and drives the fan to rotate through the output shaft. The rotation of the fan generates wind to cool the cooling in the cooling box by air cooling. The fan is coaxially connected to the rotor of the generator through the output shaft, which not only provides power for the fan during cooling but also reduces the participation of other motors, simplifying the structure.
[0007] In the above technical solution, further, the output shaft is connected to a supercharger in an output manner. The supercharger is fixedly arranged outside the cooling cover. One side of the supercharger communicates with the inside of the cooling cover, and the other side communicates with an inlet pipe. The inlet pipe is connected to the cooling box.
[0008] In this technical solution, the supercharger communicates the cooling box and the cooling cover. The output shaft provides power for the supercharger to pressurize and flow the cooling medium in the cooling box, so that the cooling medium circulates between the cooling box and the cooling cover. The output shaft not only provides power for the supercharger but also reduces the participation of redundant motors, simplifying the structure.
[0009] In the above technical solution, further, the supercharger includes a first supercharging gear. The first supercharging gear is coaxially connected to the output shaft. The first supercharging gear is rotatably arranged inside the supercharger. A second supercharging gear is rotatably arranged inside the supercharger. The second supercharging gear meshes with the first supercharging gear.
[0010] In this technical solution, the output shaft drives the first supercharging gear to rotate. The first supercharging gear meshes with the second supercharging gear. The first supercharging gear and the second supercharging gear rotate relative to each other. During the rotation process, the air on the side of the supercharger connected to the inlet pipe inside decreases, and the air pressure decreases. The cooling medium in the cooling box is sucked into the supercharger. The air on the side of the supercharger connected to the cooling cover inside increases, and the air pressure increases, so that the cooling medium in the supercharger enters the inside of the cooling cover.
[0011] In the above technical solution, further, it includes a reflux assembly. The reflux assembly includes a first reflux pipe. One side of the first reflux pipe is connected to the cooling cover, and the other side is connected to a temperature valve. The top of the temperature valve is connected to a second reflux pipe. The other side of the second reflux pipe is connected to the cooling box. The bottom of the temperature valve is connected to a third reflux pipe. The other side of the third reflux pipe is connected to the inlet pipe.
[0012] In this technical solution, the cooling medium in the cooling cover enters the temperature valve through the first return pipe. The temperature valve detects the temperature of the cooling medium. When the temperature of the cooling medium is less than 80 degrees Celsius, the temperature valve closes, and the cooling medium sequentially enters the supercharger through the third return pipe and the inlet pipe, and the cooling medium undergoes a small cycle. When the temperature of the cooling medium is greater than 80 degrees Celsius, the temperature valve opens, and the cooling medium enters the cooling tank through the second return pipe for cooling. After the cooling medium is cooled, it enters the supercharger, and the cooling medium undergoes a large cycle. Through the two different cycles, the cooling efficiency of the motor is improved.
[0013] In the above technical solution, further, a liquid inlet pipe is provided at the top of the cooling tank. The liquid inlet pipe is provided with an explosion-proof cover. One side of the liquid inlet pipe is connected to an explosion-proof pipe, and the other side of the explosion-proof pipe is connected to a temporary storage tank.
[0014] In this technical solution, the cooling medium expands when heated, and the cooling medium flows back into the cooling tank and pushes open the bottom of the explosion-proof cover. The excess cooling medium flows into the liquid inlet pipe and then into the temporary storage through the explosion-proof pipe on one side of the liquid inlet pipe. When the temperature of the cooling medium drops and contracts, the bottom of the explosion-proof cover is sucked open, and the excess cooling medium stored in the temporary storage tank returns to the cooling tank. The cooperation of the explosion-proof cover and the explosion-proof pipe prevents the cooling tank from exploding when the cooling medium expands due to heat. The temporary storage tank is a well-known prior art and will not be elaborated.
[0015] In the above technical solution, further, the explosion-proof cover includes a lid. A first pipe is fixedly provided at the bottom of the lid. A return port is provided on the side wall of the first pipe. The first pipe is sleeved with a second pipe. A first piston is fixedly provided on the side of the second pipe away from the lid. A first spring is connected between the first piston and the lid. A second piston is provided inside the first piston. The second piston is connected to a second spring, and the other side of the second spring is connected to a fixed block. The fixed block is fixedly provided at the top of the second pipe.
[0016] In this technical solution, the explosion-proof cover tightly covers the liquid inlet pipe. When the cooling medium expands due to heat, the pressure in the cooling tank increases, pushing open the first piston, and the first spring is compressed. The excess cooling medium sequentially flows into the temporary storage tank through the liquid inlet pipe and the explosion-proof pipe. When the cooling medium returns to its original state and contracts, the pressure in the cooling tank decreases, sucking open the second piston, and the second spring is stretched. The cooling medium in the temporary storage tank sequentially flows back into the cooling tank through the explosion-proof pipe, the return port, the first pipe, and the second pipe. The expansion and contraction of the explosion-proof cover due to the temperature change of the cooling medium cause the pressure change in the cooling tank, preventing the cooling tank from being deformed and damaged due to the pressure change.
[0017] In the above technical solution, further, the cooling tank is arranged inside a protective box, and ventilation grilles are provided around the protective box.
[0018] In this technical solution, the protective box not only protects the cooling box but also protects the staff, and the ventilation grille provides better heat dissipation.
[0019] The beneficial effects of the present utility model are as follows:
[0020] 1. By setting a supercharger, the cooling medium in the cooling box is pressurized and flows, enabling the cooling medium to circulate in the cooling box and the cooling cover. The output shaft not only provides power for the supercharger but also reduces the participation of redundant motors, simplifying the structure.
[0021] 2. By setting a reflux assembly, the cooling efficiency of the motor is improved through two different cycles.
[0022] 3. By setting an explosion-proof cover, when the temperature of the cooling medium changes, the expansion and contraction cause pressure changes in the cooling box, preventing the cooling box from being damaged due to internal deformation caused by pressure changes. Description of the Drawings
[0023] Figure 1 is the three-dimensional structure schematic diagram of the present utility model;
[0024] Figure 2 is the three-dimensional structure schematic diagram after removing the protective cover;
[0025] Figure 3 is the sectional three-dimensional structure schematic diagram;
[0026] Figure 4 is the three-dimensional structure schematic diagram of the reflux assembly;
[0027] Figure 5 is the three-dimensional structure schematic diagram of the supercharger;
[0028] Figure 6 is the sectional three-dimensional structure schematic diagram of the explosion-proof cover.
[0029] The markings in the figure are shown as:
[0030] 1. Generator; 2. Cooling cover; 3. Protective box; 4. Ventilation grille; 5. Output shaft; 6. Supercharger; 7. Fan; 8. Cooling box; 9. Rotor; 10. First reflux pipe; 11. Temperature valve; 12. Second reflux pipe; 13. Explosion-proof cover; 14. Inflow pipe; 15. Liquid inlet pipe; 16. Explosion-proof pipe; 131. Lid; 132. First pipe; 133. Reflux port; 134. Second pipe; 135. First piston; 136. First spring; 137. Second piston; 138. Second spring; 139. Fixed block. Detailed Implementation Modes
[0031] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.
[0032] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, rather than intending to limit the exemplary embodiments of the present application. For the sake of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.
[0034] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0035] It should be noted that in this application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0036] Embodiment 1:
[0037] This embodiment provides a cooling device for a hydraulic generator set, as Figure 1 shown, which includes a generator 1, and also includes a cooling cover 2 sleeved on the generator 1; an output shaft 5 passing through the cooling cover 2 and coaxially connecting to the rotor 9 of the generator 1; a fan 7 coaxially connected to the output shaft 5; a cooling box 8 disposed in front of the fan 7; and the interior of the cooling box 8 is connected to the interior of the cooling cover 2. The cooling cover 2 exchanges heat with the generator 1 through the cooling medium inside itself, and the cooling medium in the cooling cover 2 and the cooling box 8 circulates. During the power generation process of the generator 1, the rotation of the rotor 9 drives the fan 7 to rotate through the output shaft 5. The rotation of the fan 7 generates wind to cool the cooling in the cooling box 8 by air cooling. The fan 7 is coaxially connected to the rotor 9 of the generator 1 through the output shaft 5, which not only provides power for the fan 7 during cooling but also reduces the participation of other motors, simplifying the structure.
[0038] As Figure 2 shown, the output shaft 5 is connected to a supercharger 6. The supercharger 6 is fixedly disposed outside the cooling cover 2. One side of the supercharger 6 communicates with the interior of the cooling cover 2, and the other side communicates with an inlet pipe 14, and the inlet pipe 14 is connected to the cooling box 8. The supercharger 6 connects the cooling box 8 and the cooling cover 2. The output shaft 5 provides power for the supercharger 6 to pressurize the flow of the cooling medium in the cooling box 8, so that the cooling medium circulates in the cooling box 8 and the cooling cover 2. The output shaft 5 not only provides power for the supercharger 6 but also reduces the participation of redundant motors, simplifying the structure.
[0039] As Figure 5As shown in the figure, the supercharger 6 includes a first supercharging gear coaxially connected to the output shaft 5. The first supercharging gear is rotatably arranged inside the supercharger 6. A second supercharger gear is rotatably arranged inside the supercharger 6, and the second supercharging gear meshes with the first supercharging gear. The output shaft 5 drives the first supercharging gear to rotate. The first supercharging gear meshes with the second supercharging gear, and the first supercharging gear and the second supercharging gear rotate relative to each other. During the rotation process, the air on one side of the supercharger 6 connected to the inlet pipe 14 decreases, the air pressure decreases, and the cooling medium in the cooling tank 8 is sucked into the supercharger 6. The air on the side of the supercharger 6 connected to the cooling cover 2 increases, the air pressure increases, and the cooling medium in the supercharger 6 enters the inside of the cooling cover 2.
[0040] As Figure 4 shown, it includes a reflux assembly. The reflux assembly includes a first reflux pipe 10. One side of the first reflux pipe 10 is connected to the cooling cover 2, and the other side is connected to a temperature valve 11. The top of the temperature valve 11 is connected to a second reflux pipe 12, and the other side of the second reflux pipe 12 is connected to the cooling tank 8. The bottom of the temperature valve 11 is connected to a third reflux pipe, and the other side of the third reflux pipe is connected to the inlet pipe 14. The cooling medium in the cooling cover 2 enters the temperature valve 11 through the first reflux pipe 10. The temperature valve detects the temperature of the cooling medium. When the temperature of the cooling medium is less than 80 degrees Celsius, the temperature valve 11 closes, and the cooling medium enters the supercharger 6 through the third reflux pipe and the inlet pipe 14 in sequence. The cooling medium undergoes a small cycle. When the temperature of the cooling medium is greater than 80 degrees Celsius, the temperature valve 11 opens, and the cooling medium enters the cooling tank 8 through the second reflux pipe 12 for cooling. After the cooling medium is cooled, it enters the supercharger 6. The cooling medium undergoes a large cycle. Through the two different cycles, the cooling efficiency of the motor is improved.
[0041] As Figure 4 shown, a liquid inlet pipe 15 is provided at the top of the cooling tank 8. The liquid inlet pipe 15 is provided with an explosion-proof cover 13. One side of the liquid inlet pipe 15 is connected to an explosion-proof pipe 16, and the other side of the explosion-proof pipe 16 is connected to a temporary storage tank. The cooling medium expands due to heat, and the cooling medium flows back into the cooling tank 8 and pushes open the bottom of the explosion-proof cover 13. The excess cooling medium flows into the liquid inlet pipe 15 and then flows into the temporary storage through the explosion-proof pipe 16 on one side of the liquid inlet pipe 15. When the temperature of the cooling medium drops and contracts, the bottom of the explosion-proof cover 13 is sucked open, and the excess cooling medium stored in the temporary storage tank returns to the cooling tank 8. The cooperation of the explosion-proof cover 13 and the explosion-proof pipe 16 prevents the cooling tank 8 from exploding when the cooling medium expands due to heat. The temporary storage tank is a well-known prior art and will not be elaborated.
[0042] As Figure 6As shown, the explosion-proof cover 13 includes a cover 131. A first pipe 132 is fixedly arranged at the bottom of the cover 131. A reflux port 133 is arranged on the side wall of the first pipe 132. The first pipe 132 is sleeved with a second pipe 134. A first piston 135 is fixedly arranged on the side of the second pipe 134 away from the cover 131. A first spring 136 is connected between the first piston 135 and the cover 131. A second piston 137 is arranged inside the first piston 135. The second piston 137 is connected with a second spring 138. The other side of the second spring 138 is connected to a fixed block 139. The fixed block 139 is fixedly arranged at the top of the second pipe 134. The explosion-proof cover 13 tightly covers the liquid inlet pipe 15. When the cooling medium expands due to heat, the pressure in the cooling tank 8 increases, pushing the first piston 135 open. The first spring 136 is compressed. The excess cooling medium flows into the temporary storage tank through the liquid inlet pipe 15 and the explosion-proof pipe 16 in sequence. When the cooling medium returns to expand and contract, the pressure in the cooling tank 8 decreases, sucking the second piston 137 open. The second spring 138 is stretched. The cooling medium in the temporary storage tank flows back into the cooling tank 8 through the explosion-proof pipe 16, the reflux port 133, the first pipe 132 and the second pipe 134 in sequence. The expansion and contraction of the explosion-proof cover 13 due to the temperature change of the cooling medium is the pressure change in the cooling tank 8, avoiding the internal deformation and damage of the cooling tank 8 caused by the pressure change.
[0043] As Figure 1 shown, the cooling tank 8 is arranged inside the protection box 3. Ventilation grilles 4 are arranged around the protection box 3. The protection box 3 not only protects the cooling tank 8 but also protects the staff. The ventilation grilles 4 facilitate better heat dissipation.
[0044] The embodiments of the present application have been described above with reference to the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.
Claims
1. A cooling device for a hydroelectric generator set, comprising a generator (1), characterized in that , also includes: A cooling cover (2), wherein the cooling cover (2) is sleeved on the generator (1); An output shaft (5) passes through the cooling cover (2) and is coaxially connected to a rotor (9) of the generator (1); A fan (7), wherein the fan (7) is coaxially connected to the output shaft (5); A cooling box (8), the cooling box (8) being arranged in front of the fan (7); the interior of the cooling box (8) being connected to the interior of the cooling cover (2).
2. A cooling device for a hydroelectric generator set according to claim 1, characterized in that: The output shaft (5) is connected to a supercharger (6) at its output. The supercharger (6) is fixedly arranged outside the cooling hood (2). One side of the supercharger (6) is connected to the interior of the cooling hood (2), and the other side is connected to an inlet pipe (14). The inlet pipe (14) is connected to a cooling box (8).
3. A cooling device for a hydroelectric generator set according to claim 2, characterized in that: The supercharger (6) comprises a first supercharger gear, the first supercharger gear is coaxially connected to the output shaft (5), the first supercharger gear is rotatably arranged in the supercharger (6), a second supercharger gear is rotatably arranged in the supercharger (6), and the second supercharger gear is meshed with the first supercharger gear.
4. A cooling device for a hydroelectric generator set according to claim 1, characterized in that: The invention comprises a reflux component, wherein the reflux component comprises a first reflux pipe (10), one side of the first reflux pipe (10) is connected to a cooling hood (2), and the other side is connected to a temperature valve (11), the top of the temperature valve (11) is connected to a second reflux pipe (12), the other side of the second reflux pipe (12) is connected to a cooling box (8), the bottom of the temperature valve (11) is connected to a third reflux pipe, and the other side of the third reflux pipe is connected to an inlet pipe (14).
5. A cooling device for a hydroelectric generator set according to claim 1, characterized in that: The top of the cooling box (8) is provided with a liquid inlet pipe (15), the liquid inlet pipe (15) is provided with an explosion-proof cover (13), one side of the liquid inlet pipe (15) is connected to an explosion-proof pipe (16), and the other side of the explosion-proof pipe (16) is connected to a temporary storage box.
6. A cooling device for a hydroelectric generator set according to claim 5, characterized in that: The explosion-proof cover (13) comprises a cover (131), a first tube (132) is fixedly arranged at the bottom of the cover (131), a reflux port (133) is arranged on the side wall of the first tube (132), a second tube (134) is sleeved on the first tube (132), a first piston (135) is fixedly arranged on the side of the second tube (134) away from the cover (131), a first spring (136) is connected between the first piston (135) and the cover (131), a second piston (137) is arranged inside the first piston (135), the second piston (137) is connected to a second spring (138), the other side of the second spring (138) is connected to a fixing block (139), and the fixing block (139) is fixedly arranged on the top of the second tube (134).
7. A cooling device for a hydroelectric generator set according to claim 1, characterized in that: The cooling box (8) is arranged in the protection box (3), and ventilation grilles (4) are arranged around the protection box (3).