Vehicle-mounted nuclear power emergency pump and control method thereof

Abstract

The invention discloses a vehicle-mounted nuclear power emergency pump and a control method thereof, and relates to the field of emergency pumps, the vehicle-mounted nuclear power emergency pump comprises a main body base, a starting device is arranged on one side of the top of the main body base, couplings are arranged on one side of the starting device, the starting device is provided with a clutch between the couplings, and the other side, opposite to the clutch, of the coupler is provided with a pump body; a water outlet pipeline is arranged at the top of the pump body, a water outlet flange used for being connected with an external water supply structure is arranged at the other end of the water outlet pipeline, an outlet adjusting valve is arranged between the water outlet pipeline and the water outlet flange, and a buffer water tank is arranged at the position, located on one side of the pump body, of the top of the main body base and connected with the pump body. A buffering main valve is arranged between the buffering water tank and the pump body, water inlet pipelines are arranged at the bottoms of the two sides of the buffering main valve in an extending mode, and water inlet flanges are arranged in the middles of the water inlet pipelines. By means of the pipeline system, under the condition that various displacement schemes are provided, the output performance is guaranteed, and the water supply requirements under various extreme working conditions are met.

Description

A vehicle-mounted nuclear power emergency pump and its control method Technical Field

[0001] This invention relates to the field of emergency pumps, and in particular to a vehicle-mounted nuclear power emergency pump and its control method. Background Technology

[0002] When a nuclear power plant experiences one or more extreme external natural events such as earthquakes, storms, or tsunamis, the cooling system (such as the main pump and electric pump) may fail due to power outages or equipment damage. This prevents the nuclear power plant from quickly implementing temporary side water injection and containment spraying in the short term. In such cases, the vehicle-mounted pump, as a mobile independent power source, does not rely on the plant's power grid and can be directly driven by fuel drawn from the vehicle's fuel tank to inject water into the reactor's primary loop or steam generator. Therefore, the vehicle-mounted nuclear power emergency pump is an important component of the nuclear power plant's safety system and needs to be quickly started and stably operated in emergency situations. For example, the invention patent with announcement number CN117536879A describes a high-efficiency high-pressure centrifugal pump structure suitable for vehicle mounting. However, in nuclear power plant accident scenarios, due to different types of disasters leading to various operating environments, the inherent output capacity of this device cannot meet the water supply needs under various extreme conditions on site. At the same time, during the startup or operation of the emergency pump, the sudden opening of valves may cause a sudden increase in load, making it unable to immediately provide sufficient torque, resulting in system fluctuations. Summary of the Invention

[0003] To address the shortcomings of existing emergency pumps in meeting water supply demands under various extreme conditions during nuclear power plant accidents, and the issue that emergency pumps are prone to system fluctuations due to insufficient torque delivery, this invention provides a vehicle-mounted nuclear power emergency pump and its control method.

[0004] The present invention provides a vehicle-mounted nuclear power emergency pump and its control method, which adopts the following technical solution: A vehicle-mounted nuclear power emergency pump and its control method include a main base, an engine device is provided on one side of the top of the main base, a coupling is provided on one side of the engine device, a clutch is provided between the engine device and the coupling, a pump body is provided on the other side of the coupling opposite to the clutch, a water outlet pipe is provided on the top of the pump body, a water outlet flange for connecting an external water supply structure is provided at the other end of the water outlet pipe, and an outlet regulating valve is provided between the water outlet pipe and the water outlet flange; a buffer water tank is provided on one side of the pump body at the top of the main base, the buffer water tank is connected to the pump body, a buffer main valve is provided between the buffer water tank and the pump body, and water inlet pipes extend from the bottom of both sides of the buffer main valve, with a water inlet flange at the end of the water inlet pipe.

[0005] By adopting the above technical solution, a flow regulation system consisting of an inlet pipe, a return pipe, an outlet pipe, and a main pipe is constructed. The main valve, an outlet regulating valve, and an inlet flange regulate the flow in the pipes, thereby enabling real-time monitoring of the pump's output flow. Simultaneously, the starting device transmits torque to the pump body via a coupling, and by adjusting the speed of the starting device, flow regulation is achieved. This provides multiple discharge options while ensuring stable water output power, meeting the water supply needs under various extreme operating conditions.

[0006] Preferably, a loop pipe extends from one end of the water outlet pipe, and a loop valve is provided in the middle of the loop pipe.

[0007] By adopting the above technical solution, the opening of the loop pipe forms a return path, and the rotation of the loop valve controls the flow range of the loop pipe, thereby precisely regulating the discharge volume of the outlet pipe and detecting the flow data.

[0008] Preferably, a power housing is provided on one side of the main base surface located on the pump body. A rotating cavity is provided inside the power housing. A fixed seat is provided at the bottom of the rotating cavity. A power wheel is arranged around the outer surface of the fixed seat. The power wheel is supported on the fixed seat and rotatably disposed in the rotating cavity.

[0009] By adopting the above technical solution, the opening of the rotating cavity and the setting of the fixed seat provide movement space for the rotation of the power wheel, and the fixed seat is located at the center of the power wheel to form a limit, maintaining the stable rotation of the power wheel. At the same time, the power housing receives the rotational force output by the pump body and transmits it to the power wheel to make the power wheel rotate, thereby storing the kinetic energy output by the pump body.

[0010] Preferably, a hub is abutting against the top of the fixed seat inside the rotating cavity, the outer surface of the hub is fixedly connected to the inner surface of the power wheel, and a movable hole is opened through the center of the hub.

[0011] By adopting the above technical solution, the hub is located on the inner surface of the power wheel, so that when the hub receives rotational power, it drives the power wheel to rotate synchronously. As the power wheel rotates, it completes the work of receiving and storing the rotational force of the pump body.

[0012] Preferably, rotating bearings are rotatably installed at both ends of the power wheel inside the rotating cavity, and limiting posts are fixed on opposite sides of the two rotating bearings.

[0013] By adopting the above technical solution, the rotating bearing is rotated in the rotating cavity under the rotational force, and at the same time drives the limiting column to rotate, thereby completing the power reception.

[0014] Preferably, a connecting spindle is fixed between the two rotating bearings. One end of the connecting spindle extends to the outside and connects to the pump body, and the other end of the connecting spindle extends from the movable hole into the fixed seat. A rotor magnetic pole is fixed on the middle surface of the connecting spindle, and the stator winding is arranged to surround the rotor magnetic pole.

[0015] By adopting the above technical solution, the connecting spindle is connected to two rotating bearings. When the rotor magnetic pole is affected by the magnetic field of the stator winding, it drives the connecting spindle to rotate. The two rotating bearings are located at the upper and lower ends of the connecting spindle to share the rotational force of the connecting spindle and keep the rotation of the connecting spindle stable.

[0016] Preferably, stepped grooves are provided at both the upper and lower ends of the rotating cavity, and the inner walls of the stepped grooves are respectively in contact with the rotating bearing and the limiting post.

[0017] By adopting the above technical solution, the stepped groove provides space for the rotation of the rotating bearing and the limiting column, so that the rotating bearing rotates within the stepped groove, thereby sharing the rotational force of the connecting spindle.

[0018] Preferably, the two limiting posts are located at the bottom of the upper and lower ends of the stepped groove to form a lateral limiting.

[0019] By adopting the above technical solution, the bottom of the stepped groove and the limiting post form a limiting effect, reducing the vibration amplitude generated when the rotating bearing rotates, and helping to improve the stability of the rotating bearing.

[0020] Preferably, a fuel tank for conveying and storing fuel is fixedly mounted on one side of the main base surface located on the buffer water tank.

[0021] By adopting the above technical solution, the fuel tank is located on one side of the top of the main body base, and provides fuel support for the operation of the engine device by delivering fuel to generate electricity.

[0022] A control method for a vehicle-mounted nuclear power emergency pump, used in the aforementioned vehicle-mounted nuclear power emergency pump, includes the following steps: S01, the fuel tank supplies fuel for energy conversion, thereby enabling the starting device to operate; the output end of the starting device drives the pump body impeller to rotate via a coupling; the pump body is connected to the output end of a water supply device via an inlet flange; the inlet pipe receives external water supply and delivers it to the pump body via the main pipe; the operation of the pump body delivers water to the outlet pipe for external water supply; S02, the rotation of the pump body impeller drives the connecting main shaft to rotate; the upper and lower ends of the connecting main shaft are connected to rotating bearings and thus located within the rotating cavity. Stable rotation: The rotating connecting main shaft drives the hub to rotate, the hub drives the power wheel to rotate, and the connecting main shaft drives the rotor magnetic poles to rotate within the stator windings, generating a magnetic field. The stator windings and the magnetic field are magnetically coupled to convert electrical energy, causing the power wheel to rotate at high speed and store energy. S03: The starting device stops operating, the coupling loses the output rotational force of the starting device, thus stopping the transmission of the pump body's impeller. The magnetic field of the stator windings and the rotor magnetic poles continues to generate inertial rotational force. The rotor magnetic poles drive the connecting main shaft to rotate, and the rotational inertia of the power wheel drives the connecting main shaft to rotate, thereby driving the pump body's impeller to rotate.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The emergency diesel engine vehicle-mounted pump, relying on the vehicle-mounted diesel engine power system, can be quickly started and moved to the required working area, enabling rapid on-site operation. Simultaneously, through an overall adjustable pipeline system, it provides multiple displacement options while ensuring stable water flow output power, meeting water supply needs under various extreme working conditions; 2. It utilizes the rotor magnetic poles rotating within the stator windings to convert electromechanical energy, and the rotation of the power wheel stores mechanical kinetic energy. The outer iron core amplifies the power wheel, reducing power loss. The connecting main shaft provides power to the pump body, completing a smooth transition during power imbalance. Even when the pump body loses power from the starting device, it can still maintain the pumping process, avoiding reactor cooling problems. Attached Figure Description

[0024] Figure 1 is a front view of the overall assembly of the present invention; Figure 2 is a top view of the overall assembly of the present invention; Figure 3 is a left view of the overall assembly of the present invention; Figure 4 is an overall schematic diagram of the power housing of the present invention; Figure 5 is a schematic diagram of the internal structure of the power housing of the present invention; Figure 6 is an exploded schematic diagram of the stator winding of the present invention; Figure 7 is a schematic diagram of the connecting main shaft structure of the present invention.

[0025] Reference numerals in the attached drawings: 1. Main body base; 2. Fuel tank; 3. Buffer water tank; 4. Buffer main valve; 5. Inlet water pipe; 6. Inlet water flange; 7. Circuit valve; 8. Circuit pipe; 9. Pump body; 10. Outlet water pipe; 11. Outlet regulating valve; 12. Outlet water flange; 13. Engine; 14. Coupling; 15. Clutch; 16. Power housing; 17. Rotating cavity; 18. Fixed seat; 19. Power wheel; 20. Hub; 21. Stator winding; 22. Outer ring core; 23. Rotary bearing; 24. Limiting post; 25. Connecting main shaft; 26. Rotor magnetic pole; 27. Stepped slot; 28. Movable hole. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to Figures 1-7.

[0027] This invention discloses a vehicle-mounted nuclear power emergency pump and its control method.

[0028] Example 1: Referring to Figures 1, 2, and 3, a vehicle-mounted nuclear power emergency pump includes a main body base 1. An engine 13 (type 13 is a diesel engine) is mounted on one side of the top of the main body base 1. A coupling 14 is fixed to one side of the output end of the engine 13. A pump body 9 is fixed to the upper surface of the main body base 1 at the end opposite to the coupling 14 and away from the engine 13. The impeller shaft end of the pump body 9 is fixedly connected to the coupling 14, so that the engine 13 drives the impeller inside the pump body 9 to rotate through the coupling 14, thereby controlling... The pump body 9 is in operation, and a clutch 15 is fixed at one end of the coupling 14 near the starting device 13. A water outlet pipe 10 is connected to the output end of the top of the pump body 9. The end of the water outlet pipe 10 away from the pump body 9 extends to the bottom of the starting device 13 and a water outlet flange 12 is provided at the end of the extension. The water outlet flange 12 is sealed to the external pipeline, and an outlet regulating valve 11 is provided at the upper end of the water outlet flange 12. The opening degree of the water outlet pipe 10 is set by rotating the handle of the outlet regulating valve 11.

[0029] Referring to Figures 1, 2, and 3, a buffer water tank 3 is screwed to the other end of the pump body 9 relative to the starting device 13. (The buffer water tank 3 can contain some water. The outside of the buffer water tank 3 is also equipped with an exhaust port, a drain port, a pressure gauge, and a thermometer, etc., to stabilize system operation and protect the pump body 9 and the starting device 13.) A main pipeline is connected to one end of the side surface of the buffer water tank 3 (under normal conditions, both the main pipeline and the pump body 9 contain water to ensure the normal pumping function of the pump body 9). The other end of the pipeline is sealed to the connection end of the pump body 9. A buffer main valve 4 is fixed in the middle of the main pipeline connection. Rotating the handle of the buffer main valve 4 is used to open and close the main pipeline. Water inlet pipes 5 extend downwards from the main pipeline at both ends of the buffer main valve 4. The bottom of the water inlet pipe 5 is connected to the outside for connection with the water supply equipment. A water inlet flange 6 is fixed at the end of the water inlet pipe 5. The water inlet flange 6 is sealed to the output port of the water supply equipment to complete the water supply to the device. A loop pipe 8 extends upward from the side of the pipeline surface near the pump body 9. The end of the loop pipe 8 away from the main pipeline is connected to the outlet water pipe 10. A loop valve 7 is fixed in the middle of the loop pipe 8 to control its opening and closing. Monitoring devices such as vent valves, pressure gauges, thermometers, and flow meters can be installed on the surface of the loop pipe 8 to obtain system flow parameters in real time. A fuel tank 2 is fixed on the upper surface of the main base 1, on the side of the buffer water tank 3. The fuel tank 2 stores fuel oil and is equipped with an output pipeline to convert the stored fuel oil into energy, which ultimately powers the operation of the starting device 13. When the nuclear power plant cooling system malfunctions, the staff will... The base 1 is connected to the trailer, which moves the onboard nuclear power emergency pump to the cooling system. The pump is connected to the cooling system's inlet via the outlet flange 12 and the water supply pipe via the inlet flange 6, thus supplying cooling water into the cooling system. Together with the inlet pipe 5, return pipe 8, outlet pipe 10, and main pipe, they form an integrated flow regulation system. This system adjusts the speed of the starting device 13, allowing the pump body 9 to regulate the flow rate into the system according to different operating conditions (operating point one: 30 m³ / h, operating point two: 40 m³ / h, operating point three: 80 m³ / h, operating point four: 131 m³ / h). The speed of the starting device 13 is adjusted to... At 1610 r / min, adjust the flow rate of pump body 9 to about 80 m³ / h by adjusting the buffer main valve 4, open the loop valve 7 and adjust the flow rate of loop pipe 8 to about 50 m³ / h, and then adjust the outlet regulating valve 11 to adjust the outlet flow rate to 30 m³ / h, thus meeting the requirements of working condition one; adjust the speed of starting device 13 to 1610 r / min, adjust the flow rate of pump body 9 to about 80 m³ / h by adjusting the buffer main valve 4, open the loop valve 7 and adjust the flow rate of loop pipe 8 to about 40 m³ / h, and then adjust the outlet regulating valve 11 to adjust the outlet flow rate to 40 m³ / h, thus meeting the requirements of working condition two;Adjust the starting speed of the starter unit 13 to 1610 r / min, and adjust the flow rate of the pump body 9 to about 80 m³ / h by adjusting the buffer main valve 4, thereby meeting the requirements of operating condition three; adjust the starting speed of the starter unit 13 to 1790 r / min, and adjust the flow rate of the pump body 9 to about 131 m³ / h by adjusting the buffer main valve 4, thereby meeting the requirements of operating condition four; it should be noted that different valves are connected to different media. When using the buffer water tank 3 to connect to the water source, connect the four KWS fire hydrant connectors A / B / C / D on the buffer water tank 3 to the fire hydrant connectors arranged on site, close the two inlet pipes 5, and fully open the buffer main valve. 4. After the pump body 9 is filled with water, open the outlet regulating valve 11 on the outlet pipe 10, and then adjust the opening of the circuit valve 7 according to the operating conditions (it is closed before the pump body 9 is started); when using the pump body 9 to connect to the water source, first keep other valves closed, open the buffer main valve 4 between the buffer water tank 3 and the pump body 9 to fill the pump body 9 with water, then start the pump body 9, adjust the outlet regulating valve 11 to adjust the discharge flow of the outlet pipe 10 to about one-quarter of the rated flow, then open the water supply equipment connected to the inlet flange 6, and at the same time close the buffer main valve 4. After the flow stabilizes, adjust the opening of the outlet regulating valve 11 according to the operating conditions.

[0030] Referring to Figures 4, 5, and 6, in Embodiment 2, a power housing 16 is screwed onto the upper surface of the main base 1, on one side of the pump body 9. A rotating cavity 17 is formed inside the power housing 16. A fixing seat 18 is protruding from the center of the rotating cavity 17 within the power housing 16, dividing the rotating cavity 17 into inner and outer parts. A power wheel 19 is rotatably mounted inside the outer part of the rotating cavity 17. The power wheel 19 is a high-inertia flywheel, made of T800 grade carbon fiber composite material wound to withstand high-speed centrifugal force and still provide inertial drive after power loss. The drive wheel 19 has a central opening (the drive housing 16 is evacuated to reduce wind resistance loss and heat generation caused by the high-speed rotation of the drive wheel 19); a hub 20 is fixed on the inner wall of the drive wheel 19 and on the top of the fixed base 18 (the hub 20 covers the upper surface of the fixed base 18, thus isolating the interior of the rotating cavity 17 from the outside); grooves are provided at both the upper and lower ends of the hub 20; a movable hole 28 is provided through the center of the hub 20; a connecting main shaft 25 is provided outside the rotating cavity 17; the connecting main shaft 25 is inserted downward into the rotating cavity 17 through the movable hole 28.

[0031] Referring to Figures 5, 6, and 7, the connecting spindle 25 is inserted into the rotating cavity 17. Stepped grooves 27 are provided at both the upper outer end and the lower inner end of the rotating cavity 17. Limiting posts 24 are fixed to the ends of the stepped grooves 27 on the connecting spindle 25. The limiting posts 24 are horizontally engaged at the bottom of the stepped grooves 27, allowing only horizontal rotation. Rotary bearings 23 are fixed to the surface of the connecting spindle 25 on opposite sides of the two limiting posts 24. The connecting spindle 25 rotates within the stepped groove 27. An outer iron core 22 is fixedly mounted around the inner surface of the fixed base 18, and a stator winding 21 is fixedly mounted on the inner surface of the outer iron core 22. One end of the stator winding 21 is connected to an external power supply via a circuit, thus receiving current. Simultaneously, a rotor magnetic pole 26 protrudes from the surface of the connecting spindle 25, within the coverage area of ​​the fixed base 18. The rotor magnetic pole 26 is made of neodymium iron boron material. When current is introduced into the stator winding 21, the rotor magnetic pole 26... The stator winding 21 couples to form a rotating magnetic field, which generates inertial rotational force with the rotor magnetic poles 26, causing the rotor magnetic poles 26 to drive the connecting main shaft 25 to rotate. When in the energy storage stage, the starting device 13 operates normally, driving the connecting main shaft 25 and the power wheel 19 fixed thereon to rotate at high speed through the coupling 14. The huge rotational kinetic energy is stored in the power wheel 19. When in the coasting stage, that is, when the nuclear power plant accident causes the engine to shut down unexpectedly or the fuel supply to stop, the starting device 13 loses torque output. At this time, the power wheel 19, with its huge rotational inertia, overcomes the hydraulic resistance torque of the pump body 9 impeller and the bearing friction torque, and maintains the connecting main shaft 25 to continue rotating for a certain period of time, ensuring that the cooling water flow does not drop to zero instantaneously, but continues to decay exponentially, preventing the reactor fuel elements from being damaged by transient thermal shock. It should be noted that an isolation sleeve can be fitted on the outer surface of the power housing 16, so that the magnetic field formed by the rotor magnetic poles 26 and the stator winding 21 is confined inside the power housing 16.

[0032] Example 3, referring to Figures 1 to 7, describes a control method for a vehicle-mounted nuclear power plant emergency pump, comprising the following steps: S01, when an extreme situation occurs at the nuclear power plant, causing the cooling system to fail due to power outage or equipment damage, making it impossible for the nuclear power plant to quickly perform temporary side water injection in the short term, the pump is moved to the cooling system location by a trailer towing device. The fuel tank 2 delivers fuel to the engine device 13 via a fuel pump through a delivery pipeline, and then the fuel energy provides power support for the engine device 13. As the engine device 13 operates, the output end of the engine device 13 drives the coupling 14 to rotate, and then the coupling 14... The impeller inside the pump body 9 rotates synchronously via a shaft connection. This impeller rotation causes the pump body 9 to draw water from the outside, first through the inlet pipe 5 and then into the main pipeline. The water is then discharged through the output end of the pump body 9 into the outlet pipe 10. During this process, the loop valve 7 is adjusted according to different operating conditions to control the opening of the loop pipe 8, causing some of the water discharged into the outlet pipe 10 to flow back into the main pipeline. Thus, through the dual control of the inlet pipe 5 and the loop pipe 8, the discharge flow rate of the outlet pipe 10 is stabilized. Furthermore, the flow rate data from the loop pipe 8 is fed back through a flow detection device. Based on the feedback flow data, personnel selectively adjust the loop valve 7. Normal flow water is discharged to the outside through the outlet pipe 10, temporarily injecting water into the cooling system. This ensures that the cooling system can still provide a stable flow even in extreme situations at the nuclear power plant. Simultaneously, the rotation of the pump body 9 impeller drives the connecting main shaft 25 to rotate. The rotation of the connecting main shaft 25 drives the hub 20 to rotate, which in turn causes the power wheel 19 to rotate around the fixed base 18, increasing the rotational force. Both ends of the connecting main shaft 25, located within the rotating cavity 17, are connected to the rotating bearing 23. The rotating bearings 23 driven by the shaft are all fixedly connected to the limiting post 24. The limiting post 24 provides a stable rotation amplitude for the rotating bearings 23, thereby maintaining the stable rotation of the connecting main shaft 25. The connecting main shaft 25 drives the rotor magnetic pole 26 to rotate within the stator winding 21. As the rotor magnetic pole 26 rotates, a rotating magnetic field is generated within the stator winding 21. The stator winding 21 couples with the magnetic field to perform electromechanical energy conversion, causing the power wheel 19 to rotate and store mechanical kinetic energy. At the same time, the outer ring iron core 22 outside the stator winding 21 receives part of the magnetic force, thereby assisting in driving the rotation of the power wheel 19 and reducing power loss.S03. When the starting device 13 is briefly suspended due to a disaster, the coupling 14 loses the rotational power provided by the starting device 13, gradually reducing the transmission to the pump body 9 until it stops. At this time, the rotor magnetic pole 26 continues to rotate, generating a rotating magnetic field, causing the connecting main shaft 25 to rotate continuously. The superposition of power from the drive wheel 19 under the magnetic force of the outer ring iron core 22 generates strong inertia, driving the connecting main shaft 25 to rotate. As the connecting main shaft 25 rotates, it provides rotational power to the pump body 9. When the pump body 9 experiences a sudden increase in load due to the opening and closing of valves, the drive wheel 19 instantly releases its stored kinetic energy to make up for the power shortfall, maintaining the stable operation of the pump body 9 and forming a smooth transition, thereby maintaining continuous water extraction.

[0033] The above are merely optional embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle-mounted nuclear power emergency pump, characterized in that: The system includes a main base (1), a starting device (13) is provided on one side of the top of the main base (1), a coupling (14) is provided on one side of the starting device (13), a clutch (15) is provided between the starting device (13) and the coupling (14), a pump body (9) is provided on the other side of the coupling (14) opposite to the clutch (15), a water outlet pipe (10) is provided on the top of the pump body (9), and the other end of the water outlet pipe (10) is provided for connecting to an external water supply structure. A water outlet flange (12) is provided, and an outlet regulating valve (11) is provided between the water outlet pipe (10) and the water outlet flange (12); a buffer water tank (3) is provided on the top of the main body base (1) on one side of the pump body (9), the buffer water tank (3) is connected to the pump body (9), a buffer main valve (4) is provided between the buffer water tank (3) and the pump body (9), and water inlet pipes (5) are provided on both sides of the bottom of the buffer main valve (4), and a water inlet flange (6) is provided at the end of the water inlet pipe (5).

2. The vehicle-mounted nuclear power emergency pump according to claim 1, characterized in that: One end of the water outlet pipe (10) is provided with a loop pipe (8), and a loop valve (7) is provided in the middle of the loop pipe (8).

3. The vehicle-mounted nuclear power emergency pump according to claim 1, characterized in that: The main base (1) has a power housing (16) on one side of the pump body (9). The power housing (16) has a rotating cavity (17) inside. The bottom of the rotating cavity (17) has a fixed seat (18) protruding out. The outer surface of the fixed seat (18) is surrounded by a power wheel (19). The power wheel (19) is supported on the fixed seat (18) and rotates inside the rotating cavity (17).

4. The vehicle-mounted nuclear power emergency pump according to claim 3, characterized in that: A hub (20) is provided in the rotating cavity (17) at the top of the fixed seat (18). The outer surface of the hub (20) is fixed to the inner surface of the power wheel (19). A movable hole (28) is provided in the middle of the hub (20).

5. A vehicle-mounted nuclear power emergency pump according to claim 4, characterized in that: Rotary bearings (23) are rotatably installed at both ends of the power wheel (19) in the rotating cavity (17), and limiting posts (24) are fixed on opposite sides of the two rotating bearings (23).

6. A vehicle-mounted nuclear power emergency pump according to claim 5, characterized in that: A connecting spindle (25) is fixed between the two rotating bearings (23). One end of the connecting spindle (25) extends to the outside and connects to the pump body (9). The other end of the connecting spindle (25) extends from the movable hole (28) into the fixed seat (18). A rotor magnetic pole (26) is fixed on the middle surface of the connecting spindle (25). The stator winding (21) is completely wrapped around the rotor magnetic pole (26).

7. A vehicle-mounted nuclear power emergency pump according to claim 5, characterized in that: The rotating cavity (17) has stepped grooves (27) at both the upper and lower ends, and the inner walls of the stepped grooves (27) are in contact with the rotating bearing (23) and the limiting post (24) respectively.

8. A vehicle-mounted nuclear power emergency pump according to claim 5, characterized in that: The two limiting posts (24) are located at the bottom of the upper and lower ends of the stepped groove (27) to form a lateral limiting.

9. A vehicle-mounted nuclear power emergency pump according to claim 1, characterized in that: The surface of the main base (1) is fixed with a fuel tank (2) for conveying and storing fuel on one side of the buffer water tank (3).

10. A control method for a vehicle-mounted nuclear power emergency pump, applied to a vehicle-mounted nuclear power emergency pump as described in any one of claims 1-9, characterized in that: Includes the following steps: S01. The fuel tank (2) supplies fuel for energy conversion, thereby enabling the engine (13) to operate. The output end of the engine (13) drives the impeller of the pump body (9) to rotate through the coupling (14). The pump body (9) is connected to the output end of the water supply equipment through the water inlet flange (6). The water inlet pipe (5) receives external water supply and delivers it to the pump body (9) through the main pipe. The operation of the pump body (9) delivers water to the water outlet pipe (10) for external water supply. S02. The rotation of the impeller of the pump body (9) drives the connecting main shaft (25) to rotate. The upper and lower ends of the connecting main shaft (25) are connected to the rotating bearing (23) so that it rotates stably in the rotating cavity (17). The rotation of the connecting main shaft (25) drives the hub (20) to rotate. The hub (20) carries The power wheel (19) rotates, and the connecting main shaft (25) drives the rotor magnetic pole (26) to rotate within the stator winding (21) to generate a magnetic field. The stator winding (21) is magnetically coupled with the magnetic field to convert electrical energy, causing the power wheel (19) to rotate at high speed and thus store energy. S03, the starting device (13) stops operating, and the coupling (14) loses the output rotational force of the starting device (13) and thus stops driving the impeller of the pump body (9). The power wheel (19) releases rotational kinetic energy, and the magnetic field of the stator winding (21) and the rotor magnetic pole (26) continues to generate inertial rotational force. The rotor magnetic pole (26) drives the connecting main shaft (25) to rotate, and the rotational inertia of the power wheel (19) drives the connecting main shaft (25) to rotate, thereby driving the impeller of the pump body (9) to rotate.

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