Rotor structure of generator motor

Abstract

The utility model belongs to the field of power generation, particularly relates to a rotor structure of a generator motor, and aims to solve the problems that in the prior art, the rotor structure is high in processing and mounting precision requirements, and the joints of all sections are unstable. The motor comprises an upper end shaft, a rotor support, a magnet yoke, a magnetic pole and a main shaft. The upper end shaft is coaxially installed on the outer surface of one side of the rotor support, the magnet yoke is installed on the rotor support, and a magnetic pole is installed on the surface of the side, away from the rotor support, of the magnet yoke. One end of a main shaft is coaxially installed on the outer surface of the other side of the rotor support, and the other end of the main shaft is coaxially connected with a pump turbine shaft. According to the utility model, through optimizing the structural design of the rotor, the processing and installation difficulty is reduced, and the overall performance and reliability of the rotor are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of power generation, more particularly to a rotor structure of a power generation motor. BACKGROUND

[0002] In the prior art, the rotor structure of a hydroelectric generator motor usually adopts air cooling or oil cooling to achieve heat dissipation. Although certain achievements have been made, there are still some problems and defects. The occurrence of these problems and defects is often closely related to the design principles, material selection, process limitations and other reasons.

[0003] The air cooling scheme relies on the cooling air outside the rotor to flow through the cooling fins or ventilation grooves to carry away the heat generated by the rotor. However, the main problem with traditional air cooling technology is that the cooling effect is not good. As the capacity of the hydroelectric generator increases, the heat generated by the rotor also increases significantly, while the cooling capacity of the external air is relatively limited, resulting in excessive temperature of the rotor, which in turn affects the overall performance and stability of the generator. The occurrence of this problem is mainly due to the low thermal conductivity of air as the cooling medium. This cooling method is limited in large and super-large hydroelectric generators, because as the capacity increases, the heat generated by the rotor also increases significantly, while the cooling capacity of the external air is relatively limited.

[0004] The oil cooling scheme is to circulate the oil flow inside the rotor to carry away the heat generated by the rotor. Although the oil cooling technology improves the cooling effect to some extent, it has the problems of oil leakage and pollution. The oil cooling system requires additional equipment and maintenance, increasing the complexity and operating cost of the system. At the same time, oil leakage can cause equipment damage or environmental pollution, while oil pollution can affect the cooling effect and safety of system operation. The occurrence of these problems is mainly due to the design and operation principle of the oil cooling system itself, such as poor sealing performance, unreasonable design of the oil circulation system, etc.

[0005] In addition, in terms of rotor structure, the traditional rotor design has limitations in improving the critical speed and maintaining the flywheel torque, which limits the overall performance of the generator set. The traditional design scheme often has the problems of high machining and installation difficulty, and is not easy to maintain. The integral design, although simple in structure, requires high machining and installation precision, and is not easy to maintain once a problem occurs. The segmented design, although reducing the machining and installation difficulty, is prone to problems at the connection between the segments during operation, affecting the overall performance of the rotor. The occurrence of these problems is mainly due to the limitations of the traditional design scheme in material selection, structure design, process treatment, etc.

[0006] Based on this, the utility model provides a rotor structure of a power generation motor. CONTENT OF THE UTILITY MODEL

[0007] In order to solve the above problems in the prior art, i.e. the rotor structure of the prior art has high machining and installation precision requirements and unstable connection between sections, the utility model provides a rotor structure of a power generation motor, which comprises an upper end shaft, a rotor support, a magnetic yoke, a magnetic pole and a main shaft;

[0008] The upper end shaft is coaxially installed on the outer surface of one side of the rotor support, the magnetic yoke is installed on the rotor support, and the magnetic pole is installed on the surface of the side of the magnetic yoke away from the rotor support.

[0009] One end of the main shaft is coaxially installed on the outer surface of the other side of the rotor support, and the other end of the main shaft is coaxially connected with a water pump water turbine shaft.

[0010] In some preferred embodiments, the upper end shaft is coaxially installed on the outer surface of one side of the rotor support, and the specific structure is as follows:

[0011] One end of the upper end shaft close to the rotor support is coaxially fixed with a flange, and the upper end shaft and the rotor support are detachably fixed through the cooperation of the flange, the pin and the bolt.

[0012] In some preferred embodiments, the magnetic yoke is installed on the rotor support, and the specific structure is as follows:

[0013] The rotor support comprises a first connecting plate, a second connecting plate and a cylinder.

[0014] The two end faces of the first connecting plate are fixed with the second connecting plate and the cylinder respectively, the upper end shaft is installed on one end face of the cylinder, the main shaft is installed on the other end face of the cylinder, and the magnetic yoke is installed on the second connecting plate.

[0015] In some preferred embodiments, a plurality of vertical ribs are fixed between the second connecting plate and the cylinder, and the vertical ribs are fixed on the first connecting plate.

[0016] In some preferred embodiments, the first connecting plate and the second connecting plate are uniformly distributed in multiple groups along the circumferential direction of the cylinder.

[0017] In some preferred embodiments, the rotor support and the magnetic yoke are coaxially arranged.

[0018] In some preferred embodiments, one end of the main shaft is coaxially installed on the outer surface of the other side of the rotor support, and the specific structure is as follows:

[0019] One end of the main shaft is coaxially fixed with a flange, and the flange makes the main shaft and the rotor support detachably fixed through the cooperation of the pin and the screw rod.

[0020] In some preferred embodiments, the other end of the main shaft is coaxially connected with the water pump turbine shaft, and the specific structure is as follows:

[0021] The other end of the main shaft is coaxially fixed with a flange, and the flange is connected with the upper flange of the water pump turbine shaft through the cooperation of a pin and a screw rod.

[0022] In some preferred embodiments, the magnetic yoke is made of steel plates that are pressed and stacked, and a plurality of ventilation grooves are formed in the radial direction of the magnetic yoke.

[0023] In some preferred embodiments, two guide vanes facing each other are installed at the entrance of the ventilation groove, and the two guide vanes are respectively fixed with two rotating shafts rotating in opposite directions, the rotating shafts are drivingly connected with a rotating device, the rotating device is fixed on the outer surface of the outermost steel plate constituting the magnetic yoke, and the rotating device is used to change the angle of the guide vanes and the inner wall of the ventilation groove.

[0024] The beneficial effects of the utility model are as follows:

[0025] The technical scheme of the utility model optimizes the rotor structure design, reduces the processing and installation difficulty, and improves the overall performance and reliability of the rotor. At the same time, the optimized design also enables the rotor to maintain a high flywheel torque while improving the critical speed, further improving the performance and stability of the generator set, which is embodied in the following aspects:

[0026] Simplified processing and installation: by adopting the detachable connection mode of flanges, pins and bolts, the processing precision requirement of the rotor assembly is greatly reduced. The installation process is simplified, the installation time is reduced, and the assembly efficiency is improved.

[0027] Easy to maintain and repair: the detachable design enables easy replacement or repair of the components on the rotor without damaging the original structure. Reducing downtime, reducing maintenance costs, and improving equipment availability.

[0028] Enhance the stability of the structure: the rotor support adopts the design of the first connecting plate, the second connecting plate and the cylinder, and a plurality of vertical ribs are fixed between them, which not only increases the rigidity of the structure, but also improves the connection strength between the components. In the high-speed running state, it can effectively reduce vibration, improve running stability, and ensure long-term stable operation.

[0029] Improve the heat dissipation efficiency: at least 4 ventilation grooves are arranged on the magnetic yoke, which can effectively guide the airflow and help the internal heat to dissipate quickly, preventing overheating. The guide vanes at the entrance of the ventilation groove can adjust the angle according to the actual working condition, further optimize the air flow path, and enhance the cooling effect.

[0030] Adaptability: The combination of the guide vane and the rotating device allows for flexible adjustment according to different operating conditions to achieve the best cooling effect. This flexibility enables the rotor structure to better adapt to various environments and load changes, improving the device's application range and working efficiency.

[0031] Extended service life: By improving heat dissipation efficiency and structural stability, damage caused by high temperature and mechanical stress is reduced, thereby extending the service life of the rotor and its related components. Long service life means lower replacement frequency, further reducing operating costs. BRIEF DESCRIPTION OF DRAWINGS

[0032] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the following drawings:

[0033] Figure 1 is a front view of a rotor structure of a generator motor of the utility model;

[0034] Figure 2 is a schematic diagram of the internal structure of a rotor structure of a generator motor of the utility model;

[0035] Figure 3 is a schematic diagram of the structure of the hanging groove group and the hanging tail of a rotor structure of a generator motor of the utility model;

[0036] Figure 4 is a front view of a guide plate in a rotor structure of a generator motor of the utility model;

[0037] Figure 5 is a partial enlarged view of Figure 4 ;

[0038] Figure 6 is a top view of a guide plate in a rotor structure of a generator motor of the utility model. DETAILED DESCRIPTION

[0039] The present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are intended to explain the relevant utility model, not to limit the utility model. In addition, it should be noted that only parts related to the utility model are shown in the drawings for ease of description.

[0040] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and examples.

[0041] As shown in Figures 1-6 , see Figure 1 and Figure 2The utility model provides a rotor structure of power generation motor, including upper end shaft 1, rotor support 2, magnetic yoke 3, magnetic pole 4 and main shaft 5,

[0042] Upper end shaft 1 is coaxially installed on the outer surface of one side of rotor support 2, and magnetic yoke 3 is installed on rotor support 2, and magnetic pole 4 is installed on the surface away from one side of rotor support 2 of magnetic yoke 3.

[0043] One end of main shaft 5 is coaxially installed on the outer surface of the other side of rotor support 2, and the other end of main shaft 5 is coaxially connected with water pump water turbine shaft.

[0044] Rotor support 2 is used as the intermediate component connecting upper end shaft 1, main shaft 5 and magnetic yoke 3, needs to bear the torque, the gravity torque of magnetic pole and magnetic yoke, the centrifugal force of itself and the radial cooperation force of heat pad, and must have enough rigidity. Rotor support 2 is a welded structure, and any kind of support that can meet the above requirements can be used, but in the embodiment, a specific structure of rotor support 2 is given, which includes first connecting plate 21, second connecting plate 22, cylinder 23 and vertical rib 24. Rotor support 2 is integrally processed in the factory, and the concentricity of second connecting plate 22, cylinder 23 and vertical rib 24 is strictly guaranteed.

[0045] The end faces of first connecting plate 21 are fixed with second connecting plate 22 and cylinder 23 respectively, a plurality of vertical ribs 24 are fixed between second connecting plate 22 and cylinder 23, and vertical rib 24 is fixed on first connecting plate 21. Specifically, upper end shaft 1 is installed on the upper end face of cylinder 23, and magnetic yoke 3 is installed on second connecting plate 22.

[0046] Among them, the first connecting plate 21, the second connecting plate 22 are uniformly distributed in the circumferential direction of the cylinder 23.

[0047] The utility model discloses an improved rotor structure, which improves the critical speed by more than 10% while ensuring that the flywheel torque is not reduced, thereby improving the stability and operating efficiency of the generator set.

[0048] As a further explanation of the utility model, referring to Figure 2 , the upper end shaft 1 is coaxially installed on the outer surface of one side of the rotor support 2, and the specific structure is:

[0049] The end of the upper end shaft 1 close to the rotor support 2 is coaxially fixed with the flange, and the upper end shaft 1 and the rotor support 2 can be detachably fixed through the cooperation of the flange, the pin and the bolt.

[0050] Among them, in the embodiment, the upper end shaft 1 and the cylinder 23 are detachably fixed through the cooperation of the flange, the pin and the bolt.

[0051] More specifically, the upper surface of the cylinder 23 is provided with a first slot corresponding to the hole on the flange, and a bolt is arranged in the hole and the first slot, the bolt is threadedly connected with a nut, a through hole is formed in the bolt, and a pin is inserted into the through hole to avoid failure of the connection between the bolt and the nut.

[0052] The cylinder 23 is coaxially arranged with the upper end shaft 1.

[0053] As a further explanation of the utility model, referring to Figure 2 The rotor support 2 is provided with the magnetic yoke 3, and the specific structure is as follows:

[0054] A key hole is formed in the rotor support 2 and the magnetic yoke 3, and a key is arranged in the key hole by means of hot keying, and the key is an elastic key.

[0055] In this embodiment, a key hole of a preset position is formed in the second connecting plate 22 of the rotor support 2 and the magnetic yoke 3, the second connecting plate 22 and the magnetic yoke 3 are connected by means of hot keying, the key is a magnetic radial key and also an elastic key structure, and the key in this embodiment also adopts a tangential key mode to transmit torque, and the setting of the tangential key can ensure that the rotor support and the magnetic yoke are concentric after overspeed.

[0056] More specifically, the magnetic yoke 3 is provided with key holes with the same angle as the second connecting plates 22, and the magnetic yoke 3 and the second connecting plates 22 are fixed by means of the key holes and hot keying.

[0057] The magnetic yoke 3 is made of high-strength steel plates, the assembly of the magnetic yoke 3 adopts an axial non-segmented structure, a plurality of ventilation grooves are formed in the magnetic yoke 3 along the radial direction, and the magnetic yoke 3 is integrated by high-strength screws.

[0058] As a further explanation of the utility model, referring to Figure 2 The magnetic pole 4 is arranged on the surface of the magnetic yoke 3 away from the rotor support 2, and the specific structure is as follows:

[0059] A plurality of hanging grooves are circumferentially formed on the surface of the magnetic yoke 3 away from the rotor support 2, one hanging tail is arranged in each hanging groove in the hanging groove group, and the hanging tail is fixed with the magnetic pole 4.

[0060] In this embodiment, referring to Figure 3 One hanging groove group includes five hanging grooves, and one magnetic pole 4 is arranged in each of the five hanging grooves through five hanging tails.

[0061] The number of the hanging groove groups and the number of the magnetic poles 4 can be designed by the person skilled in the art according to actual needs.

[0062] The bottom of each hanging groove in the hanging groove set is provided with a limiting device to avoid the hanging groove and the hanging tail from being separated after installation.

[0063] As a further explanation of the utility model, referring to Figure 2 , the shape of the hanging tail comprises a T-shaped tail.

[0064] The magnetic pole 4 is composed of a magnetic pole core, a magnetic pole coil, a damping winding and the like, and the magnetic pole 4 is hung on the corresponding hanging groove on the magnetic yoke 4 through five T-shaped tails. The magnetic pole core and the magnetic pole coil are fastened into an integrated body by an iron supporting plate, the magnetic pole core is formed by high-strength thin steel plate punching and laminating, and is synthesized into an integrated body by a through-hole screw rod and a magnetic pole pressing plate.

[0065] As shown in Figures 4-6 , two opposite guide vanes are installed at the entrance of the ventilation groove 6, the two guide vanes are respectively fixed with two rotating shafts rotating in opposite directions, the rotating shafts are drivingly connected with a rotating device, the rotating device is fixed on the outer surface of the outermost steel plate constituting the magnetic yoke 3, and the rotating device is used to change the angle of the guide vanes and the inner wall of the ventilation groove 6.

[0066] In this embodiment, the guide vanes comprise a first guide vane 7 and a second guide vane 8, the rotating device comprises a micro motor 9, a first bevel gear 10, a second bevel gear 11 and a third bevel gear 12, and the rotating shafts comprise a first rotating shaft 13 and a second rotating shaft 14.

[0067] The micro motor 9 is fixed on the outer surface of the outermost steel plate constituting the magnetic yoke 3, the output shaft of the micro motor 9 is coaxially fixed with the first bevel gear 10, the first bevel gear 10 is meshed with the second bevel gear 11 and the third bevel gear 12, the second bevel gear 12 and the third bevel gear 13 rotate in opposite directions, the second bevel gear 11 is coaxially fixed with the first rotating shaft 13, the first rotating shaft 13 is bearingly connected with the second rotating shaft 14, the second rotating shaft 14 is coaxially fixed with the third bevel gear 12, the first rotating shaft 13 is bearingly arranged in the ventilation groove 6, the first rotating shaft 13 is fixed with the first guide plate 7, the second rotating shaft 14 is fixed with the second guide plate 8, and the first guide plate 7 and the second guide plate 8 are lapped with the inner wall of the ventilation groove 6.

[0068] In use, the micro motor 9 is started, which drives the first bevel gear 10 to rotate, and then drives the second bevel gear 11 and the third bevel gear 12 to rotate in opposite directions. Since the second bevel gear 11 and the third bevel gear 12 are connected with the first rotating shaft 13 and the second rotating shaft 14 respectively, the two rotating shafts will also rotate in opposite directions.

[0069] The first guide vane 7 and the second guide vane 8 rotate with the respective connecting shafts, and the angles of the first guide vane 7 and the second guide vane 8 relative to the inner wall of the ventilation channel 6 can be adjusted to change the airflow characteristics, such as flow size and flow direction, entering the ventilation channel.

[0070] The first guide vane 7 is provided with a first arc-shaped notch on one side of the second rotating shaft 14, and the first arc-shaped notch is in contact with the second rotating shaft 14 and has the same center.

[0071] The first guide vane 7 and the second guide vane 8 rotate with the respective connecting shafts, and the angles of the first guide vane 7 and the second guide vane 8 relative to the inner wall of the ventilation channel 6 can be adjusted to change the airflow characteristics, such as flow size and flow direction, entering the ventilation channel.

[0072] By precisely controlling the rotation speed and direction of the micro motor 9, the angle of the guide vane can be flexibly adjusted to achieve the purpose of optimizing the ventilation effect.

[0073] In this embodiment, an auxiliary assembly can be installed on the guide plate, and the auxiliary assembly includes:

[0074] Temperature sensor: One temperature sensor is installed on each guide vane (the first guide vane 7 and the second guide vane 8) to monitor the temperature change around the guide vane in real time.

[0075] Controller: A microprocessor or single-chip microcomputer is installed as a controller to receive data from the temperature sensor and calculate the appropriate guide vane angle according to the preset temperature threshold and control algorithm.

[0076] Power management module: A power management module is provided to provide stable working voltage for the entire system, including the micro motor 9, temperature sensor, and controller.

[0077] Communication interface: A communication interface, such as Wi-Fi, Bluetooth, or RS485, can be added for remote monitoring and debugging of the system.

[0078] Control logic

[0079] Initialization: After the system is powered on, the controller initializes all hardware modules, calibrates the temperature sensor, and reads the initial temperature value.

[0080] Temperature acquisition: The temperature sensor collects temperature data every certain time (e.g., once per second) and sends the data to the controller.

[0081] Temperature analysis and decision-making:

[0082] After receiving the temperature data, the controller compares it with the preset temperature threshold.

[0083] If the temperature exceeds the set upper limit, the controller calculates the increase in the opening angle of the guide vanes to increase air flow and help cool down.

[0084] If the temperature is below the set lower limit, the controller calculates the decrease in the opening angle of the guide vanes to reduce unnecessary air flow and save energy.

[0085] Perform actions:

[0086] According to the calculation results, the controller sends instructions to the micro motor 9 to adjust the angle of the guide vanes.

[0087] The micro motor 9 adjusts its speed and direction according to the received instructions, thereby changing the angles of the first rotating shaft 13 and the second rotating shaft 14, and finally adjusting the position of the guide vanes.

[0088] Feedback loop: The system continues to run, forming a closed-loop control system to ensure that the temperature is always maintained within the desired range.

[0089] Implementation steps

[0090] Install temperature sensor: securely install the temperature sensor on the guide vanes to ensure accurate measurement of the surrounding temperature.

[0091] Connect the lines: correctly connect the lines between the temperature sensor, controller, micro motor 9, and power management module to ensure smooth signal transmission.

[0092] Program the controller: write the controller program to implement temperature data acquisition, processing, and motor control functions.

[0093] Test and debug: test the entire system to check if all parts are working properly, and make necessary parameter adjustments and troubleshooting.

[0094] Put into use: after confirming that the system is working properly, install it on the target device and start actual application.

[0095] As a further explanation of the utility model, see Figure 2 , the rotor support 2 is coaxially arranged with the magnetic yoke 3.

[0096] Specifically, the cylinder 23 is coaxially arranged with the magnetic yoke 3.

[0097] As a further explanation of the utility model, see Figure 2 , the outer surface of the other side of the rotor support 2 is coaxially installed with one end of the main shaft 5, and its specific structure is:

[0098] One end of the main shaft 5 is fixed coaxially with a flange, and the flange is detachably fixed with the rotor support 2 through the cooperation of a pin and a screw.

[0099] More specifically, the main shaft 5 and the upper end shaft 1 are connected with the rotor support 2 in the same way, and the specific description of the upper end shaft 1 can be referred to.

[0100] In this embodiment, the main shaft 5 is also installed on the cylinder 23 through a flange.

[0101] As a further explanation of the utility model, referring to Figure 2 The other end of the main shaft 5 is connected with a water pump turbine shaft, and the specific structure is as follows:

[0102] The other end of the main shaft 5 is fixed coaxially with a flange, and the flange is connected with the upper flange of the water pump turbine shaft through the cooperation of a pin and a screw.

[0103] As a further explanation of the utility model, referring to Figure 2 The main shaft 5 is coaxially arranged with the upper end shaft 1.

[0104] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0105] In addition, it also needs to be explained that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0106] The term "includes" or any other similar term is intended to cover non-exclusive inclusion, so that the process, method, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent in the process, method, article or equipment / device.

[0107] The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but the person skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. The person skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A rotor structure of a generator motor, characterized by comprising: It comprises an upper end shaft (1), a rotor support (2), a magnetic yoke (3), a magnetic pole (4) and a main shaft (5). The upper end shaft (1) is coaxially installed on the outer surface of one side of the rotor support (2), the magnetic yoke (3) is installed on the rotor support (2), and the magnetic pole (4) is installed on the surface away from the rotor support (2) of the magnetic yoke (3). One end of the main shaft (5) is coaxially installed on the outer surface of the other side of the rotor support (2), and the other end of the main shaft (5) is coaxially connected with the water pump water turbine shaft.

2. A rotor construction for an electric generator motor as defined in claim 1, characterized in that The upper end shaft (1) is coaxially installed on the outer surface of one side of the rotor support (2), and the specific structure is that: One end of the upper end shaft (1) is coaxially fixed with the flange, and the upper end shaft (1) and the rotor support (2) can be detachably fixed through the cooperation of the flange, the pin and the bolt.

3. A rotor structure for a motor-generator as set forth in claim 1, wherein The magnetic yoke (3) is installed on the rotor support (2), and the specific structure is that: The rotor support (2) comprises a first connecting plate (21), a second connecting plate (22) and a cylinder (23). The two end faces of the first connecting plate (21) are fixed with the second connecting plate (22) and the cylinder (23) respectively, the upper end shaft (1) is installed on one end face of the cylinder (23), the main shaft (5) is installed on the other end face of the cylinder (23), and the second connecting plate (22) is provided with the magnetic yoke (3).

4. A rotor construction for an electric generator motor as claimed in claim 3, characterised in that A plurality of vertical ribs (24) are fixed between the second connecting plate (22) and the cylinder (23), and the vertical ribs (24) are fixed on the first connecting plate (21).

5. A rotor construction for an electric generator motor as defined in claim 3 wherein, The first connecting plate (21) and the second connecting plate (22) are uniformly distributed in multiple groups along the circumferential direction of the cylinder (23).

6. A rotor structure for a generator motor as defined in claim 1 wherein, The rotor support (2) is coaxially arranged with the magnetic yoke (3).

7. A rotor structure for a generator motor as defined in claim 1 wherein, One end of the main shaft (5) is coaxially installed on the outer surface of the other side of the rotor support (2), and the specific structure is that: One end of the main shaft (5) is coaxially fixed with the flange, and the main shaft (5) and the rotor support (2) can be detachably fixed through the cooperation of the flange, the pin and the screw rod.

8. A rotor structure for a generator motor as defined in claim 1 wherein, The other end of the main shaft (5) is coaxially connected with the water pump water turbine shaft, and the specific structure is that: The other end of the main shaft (5) is coaxially fixed with the flange, and the flange is connected with the upper flange of the water pump water turbine shaft through the cooperation of the pin and the screw rod.

9. A rotor structure for a generator motor as defined in claim 1 wherein, The magnetic yoke (3) is formed by pressing and stacking steel plates, and a plurality of ventilation grooves (6) are formed in the radial direction of the magnetic yoke (3).

10. A rotor construction for an electric generator motor as claimed in claim 9, characterised in that Two opposite guide vanes are installed at the entrance of the ventilation groove (6), two rotating shafts opposite in rotation are fixed with the two guide vanes respectively, the rotating shafts are drivingly connected with a rotating device, the rotating device is fixed on the outer surface of the outermost steel plate forming the magnetic yoke (3), and the rotating device is used for changing the angle between the guide vanes and the inner wall of the ventilation groove (6).

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