Rotor coil hydrogen inner cooling channel structure optimization system
By introducing a nitrogen insulation layer and flow guiding components into the hydrogen internal cooling channel of the rotor coil, the problems of temperature rise and backflow of hydrogen during transportation are solved, achieving efficient cooling and reduced energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-03-24
AI Technical Summary
The existing hydrogen internal cooling channel structure has the problem that hydrogen gas can easily exchange heat with the outside environment before entering the shell, resulting in an increase in temperature, and it lacks an effective anti-backflow structure, which weakens the cooling effect.
A rotor coil hydrogen internal cooling channel structure optimization system was designed, including hydrogen internal cooling channel auxiliary components and flow guiding components. The system isolates the heat exchange between the inside and outside of the air inlet pipe through a nitrogen insulation layer, sets up a gas guide hood and a return end to prevent high-temperature hydrogen backflow, and uses fan blades and flow guiding grooves to achieve directional flow and uniform diffusion of hydrogen.
It effectively blocks heat exchange between the inside and outside of the intake pipe, ensuring that hydrogen is kept at a low temperature, improving cooling efficiency and utilization efficiency, enhancing heat exchange efficiency and reducing energy consumption.
Smart Images
Figure CN121727296A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of generator cooling, and particularly relates to a rotor coil hydrogen internal cooling channel structure optimization system. BACKGROUND
[0002] During the operation of a generator, the rotor coil as a core power generation component continuously generates a large amount of heat due to electromagnetic induction and current heat effect. If the heat cannot be promptly discharged, the coil insulation layer will age rapidly, and the resistance value will increase, which not only reduces the power generation efficiency of the generator, but also may cause serious faults such as coil burning, directly affecting the stable operation and service life of the power generation system.
[0003] At present, hydrogen internal cooling technology is widely used in the industry to cool the rotor coil. By taking advantage of the high thermal conductivity, small density and good flowability of hydrogen, the heat of the coil is carried away by the circulation of hydrogen in the cooling channel. However, the existing hydrogen internal cooling channel structure has many shortcomings. Firstly, the gas inlet pipe is directly in contact with the external environment, and the hydrogen gas is prone to heat exchange with the external environment before entering the shell, resulting in an increase in the temperature of the hydrogen gas and a decrease in its cooling capacity. Secondly, the connection between the gas inlet pipe and the shell lacks an effective anti-backflow structure, and the hydrogen gas in the shell that has been heated by heat exchange is prone to backflow along the gas inlet pipe and mix with the newly introduced cold hydrogen gas, further weakening the cooling effect. SUMMARY
[0004] The purpose of the present application is to provide a rotor coil hydrogen internal cooling channel structure optimization system to solve the problems raised in the background.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a rotor coil hydrogen internal cooling channel structure optimization system, comprising a shell, the inside of the shell is rotatably connected with a transmission shaft through a bearing, the outside of the transmission shaft is fixedly installed with a rotor coil, one side of the shell is fixedly installed with a gas inlet pipe, and the other side of the shell is fixedly installed with a gas outlet pipe; The inside of the gas inlet pipe is provided with a hydrogen internal cooling channel auxiliary assembly, the hydrogen internal cooling channel auxiliary assembly comprises a gas inlet pipe, the bottom end of the gas inlet pipe is fixedly connected with the top of the gas inlet pipe, the inner wall of the gas inlet pipe is provided with a gas passage, and the inner wall of the gas inlet pipe is fixedly connected with a gas guide cover, one end of the gas guide cover is provided with a gas guide end, and the other end of the gas guide cover is provided with a backflow end, and the end of the gas inlet pipe extending into the inside of the shell is provided with a flow guide assembly.
[0006] As a preferred embodiment, the gas inlet pipe and the gas passage are connected, and the outside of the gas inlet pipe and the gas outlet pipe is fixedly installed with an exhaust electromagnetic valve.
[0007] As a preferred embodiment, a plurality of gas guide covers are arranged along the length direction of the gas inlet pipe, and the gas guide ends of the plurality of gas guide covers respectively extend into the inside of the adjacent gas guide cover.
[0008] As a preferred implementation, the flow guide assembly comprises a connecting frame, the side of the connecting frame is fixedly connected with one end of the air inlet pipe, the side of the connecting frame is rotationally connected with a rotating shaft, and the outer part of the rotating shaft is fixedly installed with a fan blade.
[0009] As a preferred implementation, the two sides of the fan blade are provided with flow guide grooves, and the flow guide grooves are in the shape of a circular arc.
[0010] As a preferred implementation, the fan blade is located on the side of the air guide end of the air guide cover, and the fan blade is located on the end of the air inlet pipe.
[0011] As a preferred implementation, the inner wall of the shell is fixedly installed with a fixed ring, the inner wall of the fixed ring is fixedly connected with a stator winding, and the inner wall of the fixed ring is provided with a through hole.
[0012] As a preferred implementation, the number of the through holes is multiple, and the multiple through holes are arranged in a circumferential array on the side of the fixed ring.
[0013] As a preferred implementation, the bottom of the shell is fixedly connected with a wire outlet box, the inner wall of the wire outlet box is provided with a wire outlet hole, and a sealing ring is arranged between the wire outlet hole and the wire.
[0014] As a preferred implementation, the inside of the shell is provided with a temperature sensor and a pressure sensor, and the temperature sensor and the pressure sensor are electrically connected with a controller arranged outside the shell.
[0015] Compared with the prior art, the beneficial effects of the present application are: The rotor coil hydrogen internal cooling channel structure optimization system, by setting the hydrogen internal cooling channel auxiliary assembly, before the generator starts and during the operation process, the operator can open the electromagnetic valve outside the gas filling pipe through the controller, so that the nitrogen gas is continuously delivered to the ventilation groove on the inner wall of the air inlet pipe, the ventilation groove is arranged around the inner wall of the air inlet pipe, and after the nitrogen gas is filled, a closed nitrogen gas heat insulation layer is formed on the inner wall of the air inlet pipe. The heat insulation layer isolates the hydrogen gas conveying channel inside the air inlet pipe from the external environment of the outer wall of the air inlet pipe. Nitrogen has excellent heat insulation performance, and the heat insulation layer formed by it can effectively block the heat exchange path between the inside and outside of the air inlet pipe, avoid the transmission of external environment heat into the air inlet pipe, ensure that the hydrogen gas entering the air inlet pipe always maintains a low initial temperature, solve the problem of temperature rise of hydrogen gas during conveying, and guarantee the cooling capacity of hydrogen gas after entering the shell. A temperature-stable cooling medium is provided for the rotor coil, and the initial cooling efficiency is improved; The rotor coil hydrogen internal cooling channel structure optimization system, when the cooling hydrogen is transported to the gas guide cover area through the gas inlet pipe, under the guiding effect of the gas guide end, the hydrogen flows into the shell in a directional flow manner, directly acts on the surface of the rotor coil for heat exchange, and the backflow prevention design of the backflow end effectively avoids the backflow of the high-temperature hydrogen in the shell after heat exchange along the gas inlet pipe, prevents the mixing of the high-temperature hydrogen and the newly-incoming low-temperature hydrogen in the gas inlet pipe, thereby ensuring that the hydrogen entering the shell always maintains a relatively low temperature, guaranteeing the cooling efficiency of the cooling medium, and meanwhile, the design reduces the invalid circulation of the hydrogen in the gas inlet pipe, improves the utilization efficiency of the hydrogen, enables more low-temperature hydrogen to directly act on the rotor coil, and improves the heat exchange efficiency of the overall cooling system. The plurality of gas guide covers fixedly connected to the inner wall of the gas inlet pipe are arranged in sequence along the length direction of the gas inlet pipe, and the gas guide ends of adjacent gas guide covers are nested into each other to form a continuous hydrogen guiding channel, and meanwhile, after the gas inlet pipe is communicated with the air passage, the nitrogen is filled in the air passage, and the gap formed between the gas guide cover and the inner wall of the gas inlet pipe cooperates with the air passage to build a double heat insulation space, i.e., an outer nitrogen heat insulation layer and an inner air buffer layer between the gas guide cover and the inner wall of the gas inlet pipe, when the ambient temperature changes, the heat needs to pass through the air buffer layer and the nitrogen heat insulation layer in sequence to be transmitted to the hydrogen conveying channel, and the double barriers greatly weaken the heat transmission efficiency. The rotor coil hydrogen internal cooling channel structure optimization system, by arranging the flow guide assembly, when the low-temperature hydrogen enters the shell at high speed through the gas guide end of the gas guide cover, directly impacts the fan blades on the connecting frame, and the kinetic energy of the hydrogen flow drives the fan blades to rotate around the rotating shaft, the circular-arc flow guide grooves on the two sides of the fan blades rotate with the fan blades to form a directional air flow guiding effect, disperses the concentrated hydrogen into multiple air flows, guides the hydrogen to diffuse uniformly along the axial and radial directions of the rotor coil, so that the hydrogen can cover all the heating areas of the rotor coil, the rotation of the fan blades and the guiding effect of the flow guide grooves significantly improve the activity of the hydrogen in the shell, break the problem of uneven diffusion of the hydrogen in the traditional cooling structure, enable the hydrogen to fully contact the surface of the rotor coil, accelerate the heat transmission speed, the circular-arc flow guide grooves are designed according to the principle of fluid mechanics, can reduce the flow resistance of the hydrogen, reduce the energy loss, at the same time, make the hydrogen form a circulating air flow in the shell, prolong the contact time of the hydrogen and the coil, further improve the heat exchange efficiency, and in addition, the flow guide assembly does not need to be driven by an extra power, and completely relies on the flow of the hydrogen itself to realize the operation, thereby reducing the energy consumption and maintenance cost of the system. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a front view of the structure of the present application. Figure 2 It is a sectional view of the structure of the present application. Figure 3It is the internal structure schematic view of the shell in the application; Figure 4 It is the structure schematic view of the air inlet pipe in the application; Figure 5 It is the cross-sectional view schematic view of the air inlet pipe in the application; Figure 6 It is the enlarged view schematic view of A in the application; Figure 4 Figure 7 It is the enlarged view schematic view of B in the application; Figure 5
[0017] In the figure: 1, shell; 2, transmission shaft; 3, rotor coil; 4, air inlet pipe; 5, air outlet pipe; 6, gas filling pipe; 7, air passage; 8, air guide cover; 9, air guide end; 10, backflow end; 11, connecting frame; 12, rotating shaft; 13, fan blade; 14, flow guide groove; 15, fixed ring; 16, stator winding; 17, through hole; 18, outlet box. DETAILED DESCRIPTION
[0018] The application will be further described below in combination with examples.
[0019] The following examples are used to illustrate the application, but cannot be used to limit the protection scope of the application. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements of the method of the application under the concept of the application all belong to the protection scope of the application.
[0020] Please refer to Figure 1 , Figure 2 and Figure 3 , the application provides a rotor coil hydrogen internal cooling channel structure optimization system, which comprises a shell 1, the inside of the shell 1 is rotationally connected with a transmission shaft 2 through a bearing, the outside of the transmission shaft 2 is fixedly installed with a rotor coil 3, one side of the shell 1 is fixedly installed with an air inlet pipe 4, and the other side of the shell 1 is fixedly installed with an air outlet pipe 5, the inner wall of the shell 1 is fixedly installed with a fixed ring 15, the inner wall of the fixed ring 15 is fixedly connected with a stator winding 16, and the inner wall of the fixed ring 15 is provided with a plurality of through holes 17, the plurality of through holes 17 are arranged in a circumferential array on the side surface of the fixed ring 15, the bottom of the shell 1 is fixedly connected with an outlet box 18, the inner wall of the outlet box 18 is provided with an outlet hole, a sealing ring is arranged between the outlet hole and a wire, the inside of the shell 1 is provided with a temperature sensor and a pressure sensor, and the temperature sensor and the pressure sensor are electrically connected with a controller arranged outside the shell 1.
[0021] In this embodiment, the operator can first complete the parameter initialization setting through the controller outside the shell 1, including the preset temperature range of hydrogen in the air inlet pipe 4 (usually 20-30℃) and the preset pressure range of hydrogen inside the shell 1 (generally 0.3-0.5MPa according to the power matching of the generator). At this time, the controller has established a signal connection with the temperature sensor and the pressure sensor inside the shell 1 through the wire, and the sensor is in standby state. At the same time, the wire in the outlet box 18 is sealed with the outlet hole through the sealing ring to avoid subsequent hydrogen leakage. When one end of the transmission shaft 2 is connected with one end of the output shaft of the steam turbine generator, the rotation of the output shaft of the steam turbine generator drives the transmission shaft 2 to rotate, and the transmission shaft 2 drives the rotor coil 3 to rotate along the stator winding 16, generating electromagnetic induction and thus generating current, Please refer to Figure 1 、 Figure 4 and Figure 5 , the inside of the air inlet pipe 4 is provided with a hydrogen internal cooling channel auxiliary assembly, the air inlet pipe 4 is fixedly connected with the top of the air inlet pipe 4 at the bottom end of the gas filling pipe 6, the inner wall of the air inlet pipe 4 is provided with a gas passage 7, and the inner wall of the air inlet pipe 4 is fixedly connected with a gas guide cover 8, one end of the gas guide cover 8 is provided with a gas guide end 9, and the other end of the gas guide cover 8 is provided with a backflow end 10, one end of the air inlet pipe 4 extending into the shell 1 is provided with a flow guide assembly, the gas filling pipe 6 is connected with the gas passage 7, and the gas filling pipe 6 and the outer part of the exhaust pipe 5 are both fixedly installed with an exhaust electromagnetic valve.
[0022] In this embodiment, the operator can open the electromagnetic valve outside the gas filling pipe 6 to make the nitrogen continuously flow into the gas passage 7 on the inner wall of the air inlet pipe 4 through the gas filling pipe 6. The gas passage 7 is arranged around the inner wall of the air inlet pipe 4, and a closed nitrogen heat insulation layer is formed on the inner wall of the air inlet pipe 4 after the nitrogen is filled. The heat insulation layer isolates the hydrogen conveying channel inside the air inlet pipe 4 from the external environment of the outer wall of the air inlet pipe 4. Nitrogen has excellent heat insulation performance, and the heat insulation layer formed by nitrogen can effectively block the heat exchange path between the inside and outside of the air inlet pipe 4, avoid the heat of the external environment from entering the inside of the air inlet pipe 4, and ensure that the hydrogen entering the air inlet pipe 4 always maintains a low initial temperature. This design solves the problem of temperature rise of hydrogen during conveying from the source, guarantees the cooling capacity of hydrogen after entering the shell 1, provides a temperature-stable cooling medium for the rotor coil 3, and improves the initial cooling efficiency.
[0023] Please refer to Figure 4 、 Figure 5 and Figure 7 , the gas guide cover 8 is provided with a plurality of gas guide covers 8 along the length direction of the gas filling pipe 6, and the gas guide ends 9 of the plurality of gas guide covers 8 respectively extend into the interiors of the adjacent gas guide covers 8.
[0024] In this embodiment, when the cooling hydrogen is delivered to the area of the gas guide cover 8 through the gas inlet pipe 4, under the guidance of the gas guide end 9, the hydrogen quickly enters the inside of the shell 1 in a directional flow manner, and directly acts on the surface of the rotor coil 3 for heat exchange. After heat exchange, the temperature of the hydrogen increases and the density decreases, and an upward flow trend is formed in the inside of the shell 1. Part of the heated hydrogen may spread to the direction of the gas inlet pipe 4. At this time, the backflow end 10 arranged at the end of the gas guide cover 8 plays a role. The special arc-shaped structure of the backflow end 10 forms a reverse resistance with the inner wall of the gas inlet pipe 4, blocks the hot hydrogen diffusing to the gas inlet pipe 4, and forces the hot hydrogen to change the flow direction and participate in the circulation in the inside of the shell 1 again or gather to the direction of the gas outlet pipe 5.
[0025] Then, the backflow prevention design of the backflow end 10 effectively avoids the backflow of the high-temperature hydrogen after heat exchange in the shell 1 along the gas inlet pipe 4, prevents the mixing of the high-temperature hydrogen with the low-temperature hydrogen newly introduced into the gas inlet pipe 4, and thus ensures that the hydrogen entering the shell 1 always maintains a relatively low temperature, guaranteeing the cooling efficiency of the cooling medium. At the same time, this design reduces the invalid circulation of hydrogen in the gas inlet pipe 4, improves the utilization efficiency of hydrogen, enables more low-temperature hydrogen to directly act on the rotor coil 3, and improves the heat exchange efficiency of the overall cooling system.
[0026] In addition, the plurality of gas guide covers 8 fixedly connected to the inner wall of the gas inlet pipe 4 are arranged in sequence along the length direction of the gas inlet pipe 6, and the gas guide ends 9 of adjacent gas guide covers 8 are nested into each other to form a continuous hydrogen guiding channel. At the same time, after the gas inlet pipe 6 is communicated with the ventilation groove 7, nitrogen is filled in the ventilation groove 7, and the gap between the gas guide cover 8 and the inner wall of the gas inlet pipe 4 cooperates with the ventilation groove 7 to build a double thermal insulation space, that is, an outer nitrogen thermal insulation layer and an inner air buffer layer between the gas guide cover 8 and the inner wall of the gas inlet pipe 4. When the ambient temperature changes, heat needs to pass through the air buffer layer and the nitrogen thermal insulation layer in sequence to be transmitted to the hydrogen conveying channel, and the double barriers greatly weaken the heat transfer efficiency.
[0027] Please refer to Figure 4 , Figure 5 and Figure 6 , the flow guide assembly includes a connecting frame 11, the side surface of the connecting frame 11 is fixedly connected to one end of the gas inlet pipe 4, the side surface of the connecting frame 11 is rotationally connected with a rotating shaft 12, the outer part of the rotating shaft 12 is fixedly installed with a fan blade 13, the two sides of the fan blade 13 are provided with flow guide grooves 14, the flow guide grooves 14 are arc-shaped, the fan blade 13 is located at the side surface of the gas guide end 9 of the gas guide cover 8, and the fan blade 13 is located at the end of the gas inlet pipe 4.
[0028] In this embodiment, when the low-temperature hydrogen gas enters the inside of the shell 1 at high speed through the gas guide end 9 of the gas guide cover 8, it directly impacts the fan blades 13 on the connecting frame 11, and uses the kinetic energy of the hydrogen gas flow to push the fan blades 13 to rotate around the rotating shaft 12. The circular-arc-shaped flow guide grooves 14 on both sides of the fan blades 13 rotate with the fan blades 13, forming a directional gas flow guiding effect, dispersing the concentrated hydrogen gas into multiple gas streams, and guiding the hydrogen gas to uniformly diffuse along the axial and radial directions of the rotor coil 3, so that the hydrogen gas can cover all the heating areas of the rotor coil 3. At the same time, the pressure sensor monitors the hydrogen gas pressure in the shell 1 in real time, ensuring that the hydrogen gas flow can maintain the stable rotation of the fan blades 13, and avoiding the decrease of the flow guiding effect due to insufficient pressure.
[0029] The rotation of the fan blades 13 and the guiding effect of the flow guide grooves 14 significantly improve the activity of the hydrogen gas in the shell 1, break the problem of uneven diffusion of hydrogen gas in the traditional cooling structure, and enable the hydrogen gas to fully contact the surface of the rotor coil 3, thereby accelerating the heat transfer speed. The circular-arc-shaped flow guide grooves 14 are designed in accordance with the principle of fluid mechanics, can reduce the flow resistance of the hydrogen gas and energy loss, and at the same time form a circulating gas flow in the shell 1, prolong the contact time of the hydrogen gas with the coil, and further improve the heat exchange efficiency. In addition, the flow guiding assembly does not need additional power driving, and completely relies on the flow of hydrogen gas itself to realize operation, thereby reducing the energy consumption and maintenance cost of the system.
[0030] The working principle and use process of the present application are as follows: The operator needs to complete parameter initialization through the controller equipped with a touch interface outside the shell 1 - set the preset temperature range of hydrogen gas in the gas inlet pipe 4 (usually 20-30 DEG C, and the intermediate value 25 DEG C ± 2 DEG C can be taken for large units), and the preset pressure range of hydrogen gas in the shell 1 (generally matched as 0.3-0.5 MPa) according to the power level of the generator. At this time, the controller has established stable signal connection with the temperature sensor and the pressure sensor fixed on the inner wall of the shell 1 through special wires resistant to high temperature and electromagnetic interference, and the sensor immediately enters a low-power standby state; In order to ensure the sealing property of the system, the exhaust electromagnetic valves outside the gas inlet pipe 4, the gas inlet pipe 6 and the exhaust pipe 5 are in a normally closed state, and the wires in the outlet box 18 and the outlet hole are tightly sealed by using a sealing ring made of hydrogen-resistant rubber, thereby eliminating the risk of subsequent hydrogen leakage from the source and laying a solid foundation for safe operation of the system; After the start command is issued, the controller first opens the electromagnetic valve outside the gas inlet pipe 6, and uses the excellent heat insulation performance of nitrogen to continuously deliver it through the gas inlet pipe 6 into the air distribution groove 7 on the inner wall of the gas inlet pipe 4. After the nitrogen is filled, a complete closed heat insulation layer is formed, effectively isolating the hydrogen channel inside the gas inlet pipe 4 from the heat exchange with the external environment; At this stage, the temperature sensor collects the initial air temperature in the gas inlet pipe 4 in real time and uploads it to the controller. If the monitored ambient temperature exceeds 30°C, the controller automatically increases the nitrogen supply to strengthen the heat insulation effect. If the ambient temperature is in the appropriate range, the basic supply is maintained to achieve energy-saving control. At the same time, the stator winding 16 on the inner wall of the fixed ring 15 synchronously enters the pre-excitation state, preparing for the subsequent power generation process; When the temperature sensor feedbacks that the temperature in the gas inlet pipe 4 stabilizes in the preset range, the controller accurately synchronously opens the hydrogen supply valve of the gas inlet pipe 4 and the electromagnetic valve of the exhaust pipe 5. The low-temperature hydrogen is quickly delivered along the gas inlet pipe 4, and when it flows through the area of the gas guide cover 8, it is precisely guided into the inside of the shell 1 under the guidance of multiple nested gas guide covers 8 to form a directional airflow through the gas guide end 9. The kinetic energy generated by the hydrogen flow directly impacts the fan blades 13 on the connecting frame 11, pushing the fan blades 13 to rotate smoothly around the rotating shaft 12. The circular arc-shaped flow guide grooves 14 on both sides of the fan blades 13 naturally disperse the concentrated airflow into multiple axial and radial interwoven airflows, ensuring that the hydrogen uniformly covers the surface of the rotor coil 3 and the stator winding 16. After the hydrogen fully contacts and absorbs heat from the rotor coil 3 and the stator winding 16, the temperature rises, the density decreases, and the hot hydrogen naturally flows to the upper part of the shell 1. If some of the hot hydrogen spreads in the direction of the gas inlet pipe 4, it will be effectively blocked by the backflow end 10 at the end of the gas guide cover 8. The arc-shaped structure of the backflow end 10 forms a reverse airflow resistance with the inner wall of the gas inlet pipe 4, forcing the hot hydrogen to change its flow path to form a circulating airflow along the multiple through holes 17 arranged on the inner wall of the fixed ring 15, significantly prolonging the heat exchange time. During the entire cooling process, the temperature sensor continuously monitors the hydrogen temperature in the gas inlet pipe 4. If the temperature exceeds 30°C due to external environmental fluctuations, the controller immediately increases the nitrogen supply of the gas inlet pipe 6 to strengthen the heat resistance through the double heat insulation space (outer nitrogen insulation layer + inner air buffer layer) formed by the air distribution groove 7 and the gas guide cover 8. The pressure sensor continuously collects the pressure inside the shell 1. When the pressure is below 0.3MPa, the hydrogen supply of the gas inlet pipe 4 is increased. When the pressure is above 0.5MPa, the opening of the electromagnetic valve of the exhaust pipe 5 is increased to dynamically maintain stable parameters. During shutdown, the controller gradually reduces the excitation strength of the stator winding 16 according to the preset program, and preferentially closes the hydrogen supply valve of the gas inlet pipe 4. When the temperature sensor feedbacks that the temperature in the shell 1 is below 40°C and the pressure sensor feedbacks that the pressure is below 0.1MPa, the electromagnetic valves of the gas inlet pipe 6 and the exhaust pipe 5 are closed. Then the controller controls the sensor to stop working, the operator reads the complete temperature and pressure data of this operation through the data recording function of the controller, and the system inspection is completed. During the whole process, the fan blade 13 gradually stops rotating with the decrease of hydrogen flow, and the backflow end 10 of the gas guide cover 8 always plays a role to prevent the backflow of residual hot hydrogen, thereby ensuring the safety of shutdown.
[0031] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles of the application and that numerous modifications, substitutions and changes can be undertaken by those skilled in the art without departing from the principles of the application and that the scope of the application is defined only by the claims and their equivalents.
Claims
1. A rotor coil hydrogen internal cooling channel structure optimization system, comprising a housing (1), characterized in that: The housing (1) is rotatably connected to a drive shaft (2) via a bearing. A rotor coil (3) is fixedly installed on the outside of the drive shaft (2). An air inlet pipe (4) is fixedly installed on one side of the housing (1), and an exhaust pipe (5) is fixedly installed on the other side of the housing (1). The air inlet pipe (4) is provided with a hydrogen internal cooling channel auxiliary component. The hydrogen internal cooling channel auxiliary component includes a gas filling pipe (6). The bottom end of the gas filling pipe (6) is fixedly connected to the top of the air inlet pipe (4). The inner wall of the air inlet pipe (4) is provided with a ventilation groove (7). The inner wall of the air inlet pipe (4) is fixedly connected with a gas guide hood (8). One end of the gas guide hood (8) is provided with a gas guide end (9). One end of the gas guide hood (8) is provided with a return end (10). The end of the air inlet pipe (4) that extends into the housing (1) is provided with a flow guide component.
2. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 1, characterized in that: The gas filling pipe (6) is connected to the air vent (7), and both the gas filling pipe (6) and the exhaust pipe (5) are fixedly equipped with exhaust solenoid valves.
3. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 1, characterized in that: The air guide hood (8) is provided in multiple ways along the length of the air supply pipe (6), and the air guide end (9) of the multiple air guide hoods (8) extends into the interior of the adjacent air guide hoods (8).
4. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 1, characterized in that: The flow guide assembly includes a connecting frame (11), the side of which is fixedly connected to one end of the air intake pipe (4), and a rotating shaft (12) is rotatably connected to the side of the connecting frame (11), and a fan blade (13) is fixedly installed on the outside of the rotating shaft (12).
5. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 4, characterized in that: The fan blade (13) has guide grooves (14) on both sides, and the guide grooves (14) are arc-shaped.
6. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 4, characterized in that: The fan blade (13) is located on the side of the air guide end (9) of the air guide cover (8), and the fan blade (13) is located at the end of the air intake pipe (4).
7. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 1, characterized in that: A fixing ring (15) is fixedly installed on the inner wall of the housing (1), and a stator winding (16) is fixedly connected to the inner wall of the fixing ring (15), and a through hole (17) is opened on the inner wall of the fixing ring (15).
8. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 7, characterized in that: The number of through holes (17) is multiple, and the multiple through holes (17) are arranged in a circular array on the side of the fixing ring (15).
9. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 1, characterized in that: The bottom of the housing (1) is fixedly connected to a wire outlet box (18), and the inner wall of the wire outlet box (18) is provided with a wire outlet hole, and a sealing ring is provided between the wire outlet hole and the wire.
10. The rotor coil hydrogen internal cooling channel structure optimization system according to claim 1, characterized in that: A temperature sensor and a pressure sensor are installed inside the housing (1), and both the temperature sensor and the pressure sensor are electrically connected to a controller installed outside the housing (1).