Water pipeline power generation device with flow and pressure regulation function

Abstract

The application provides a water pipeline power generation device with flow and voltage adjusting functions, which comprises a tubular generator shell, a stator assembly in the generator shell, and a coaxial rotor assembly. The stator assembly comprises fixed coil windings uniformly distributed on the outer circumferential surface of the rotor assembly and adjustable coil windings which can move axially along the rotor assembly and adjust the axial position to change the magnetic flux. The rotor assembly comprises a tubular rotor shell for accommodating water flow. The inner circumferential surface of the rotor shell is provided with a plurality of groups of rotor blades distributed in a spiral shape. The outer circumferential surface of the rotor shell is provided with a permanent magnet group which is inductive cooperation with the fixed coil windings and the adjustable coil windings. The rotor assembly rotates coaxially relative to the stator assembly to generate power under the pushing action of the water flow on the rotor blades. The traditional water power design is improved. The tubular design can be directly connected to the water pipeline, thereby reducing the higher requirements of traditional open generator sets for water flow and stability. Moreover, the structure can convert the potential energy of the water flow, thereby achieving the flow and voltage adjusting effects.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and hydropower technology, and more specifically, to a water pipeline power generation device with flow regulation and pressure regulation functions. Background Technology

[0002] In many areas, residents need to draw water from reservoirs for daily and industrial use. Some reservoirs have generator sets that supply electricity to a region through grid connection and other measures. However, with urban development, water consumption has increased significantly. In most cases, the water supplied by reservoirs around cities is mainly used for industrial and residential use. Unlike the upstream areas of water sources where water consumption is low and water potential energy is abundant, the reservoirs around cities do not have extra water for power generation, and the original generator sets have basically ceased to be used.

[0003] Generally, there is a significant elevation difference between reservoirs and downstream water treatment plants. Water plants typically draw water from reservoirs via pipes with a diameter of 1-3 meters. Due to the elevation difference, the internal pressure of the pipelines is high, necessitating the installation of multi-stage flow and pressure regulating valves to prevent excessive pressure from causing pipe bursts and other problems. The hydraulic resources transported through these pipelines cannot be utilized for energy purposes, which is essentially a waste. Existing hydropower facilities also cannot utilize this type of pipeline-transported water resource downstream, mainly for the following reasons: small volume within a given space, long pipeline routes, complex surrounding environments unsuitable for hydropower equipment construction, or insufficient elevation difference and limited water volume per unit time.

[0004] In summary, existing hydropower technologies face the challenge of generating electricity by utilizing water transported between upstream and downstream reservoirs around cities, resulting in energy waste. Summary of the Invention

[0005] The technical problem to be solved by this invention is that existing hydropower technology is unable to utilize water transport between upstream and downstream reservoirs around cities for power generation, resulting in energy waste.

[0006] To address the aforementioned problems, this invention provides a water pipeline power generation device with flow and pressure regulation functions. The device includes a tubular generator housing with both ends connected to the pipeline, a stator assembly fixedly installed within the housing, and a tubular rotor assembly coaxially nested within the stator assembly. The stator assembly includes fixed coil windings evenly distributed on the outer circumferential surface of the rotor assembly and adjustable coil windings that can move axially along the rotor assembly and adjust their axial position to change the magnetic flux. The rotor assembly includes a tubular rotor shell for accommodating water flow. Multiple sets of rotor blades are spirally distributed on the inner circumferential surface of the rotor shell, and a permanent magnet assembly is provided on the outer circumferential surface of the rotor shell, which inductively engages with the fixed and adjustable coil windings. The rotor assembly rotates coaxially with the stator assembly to generate electricity under the pushing action of the water flow on the rotor blades.

[0007] The water pipeline power generation device with flow and pressure regulation function provided by this invention improves the design of traditional hydropower devices. Its overall structure is a shell-like structure that can be directly connected to the water pipeline, thereby reducing the higher requirements of traditional open generator sets for water flow and stability. The device can utilize the relatively insufficient water potential energy in the water pipeline, thereby effectively recovering and utilizing the hydraulic potential energy resources from the upstream reservoir to the downstream water plant, or from the water plant to the downstream water user, and avoiding waste.

[0008] Specifically, through a nested, tubular rotor and stator structure, water is transported through the internal rotor shell. The rotor's inner blade structure interacts with the water flow, driving the rotor to rotate and inducing electricity through the stator's coil windings. The coil windings include an adjustable section; the axial relative movement between this structure and the rotor adjusts the total magnetic flux generated by electromagnetic induction, thereby adjusting the generator's resistance to the water flow. This adaptive adjustment to current water pressure and flow rate prevents insufficient rotor rotation due to low water flow or inadequate potential energy recovery due to excessive water flow. This design achieves optimal power generation and, by consuming potential energy within the pipeline, controls the water flow and pressure within a certain range, similar to a flow and pressure regulating valve in water network construction, thus better ensuring pipeline safety. In summary, this invention provides a water pipeline power generation device with flow and pressure regulation functions, effectively solving the technical problem of existing hydropower technologies' inability to utilize water transport between upstream and downstream reservoirs around cities for power generation, resulting in energy waste.

[0009] As a preferred embodiment, the stator assembly further includes a tubular stator inner shell located between the generator housing and the fixed coil windings. The fixed coil windings are evenly distributed and fixed to the inner edge of the stator inner shell. An adjustable mounting ring is axially slidably fitted onto the outer circumference of the stator inner shell, and the adjustable coil windings are mounted on the sidewall of the adjustable mounting ring. This optimizes the overall structural design of the stator assembly and the structure of the adjustable windings.

[0010] As a preferred embodiment, the outer wall of the stator inner shell is provided with multiple guide grooves along the axial direction, and the inner wall of the adjustable mounting ring is provided with a protruding guide slider, which slides in cooperation with the guide grooves. A fixed rack along its length is provided within one of the guide grooves, and an axial adjusting gear meshing with the fixed rack is provided on one side of the guide slider. The axial adjusting gear is driven by an axial feed motor, which drives the shaft adjusting gear to rotate, thereby driving the adjustable mounting ring to move axially along the stator inner shell. This further optimizes the structure of the adjustable coil winding and its corresponding stator structure design, achieving optimized control of the axial feed.

[0011] As a preferred embodiment, the adjustable coil winding includes multiple adjustable coil units mounted circumferentially on the inner sidewall of the adjustable mounting ring. Each adjustable coil unit includes a closed-loop coil and a mounting plate for fixing the coil. The adjustable coil unit is connected to a radial distance adjustment structure for adjusting the radial distance between the adjustable coil unit and the rotor assembly. Based on the adjustable axial position of the adjustable coil winding, the range and adjustment parameters of the adjustable magnetic flux between the rotor and stator are further optimized by adjusting the radial distance.

[0012] As a preferred embodiment, the radial distance adjustment structure includes an annular gear ring disposed on the outer edge of the adjustable mounting ring and rotatably coaxial with the adjustable mounting ring, and a gear screw that engages with the annular gear ring. The gear side of the gear screw meshes with the annular gear ring, and its screw side is threadedly engaged with a threaded hole in the center of the mounting plate. The rotation of the annular gear ring drives the gear screw, which in turn drives the adjustable coil unit to feed radially along the stator assembly. This optimizes the specific structure for radial adjustment of the adjustable coil winding, providing a simple and feasible radial adjustment scheme.

[0013] As a preferred embodiment, a radial adjustment motor is mounted on the sidewall of the adjustable mounting ring. The radial adjustment motor is driven to rotate by the annular gear ring via an output gear. This further optimizes the radial adjustment structure design of the adjustable coil winding.

[0014] As a preferred embodiment, a guide post is provided on the inner side of the adjustable mounting ring at the position of each mounting plate, and a sliding hole is provided at the corresponding position of the mounting plate to slide and engage with the guide post. The engagement of the guide post and the sliding hole limits the mounting plate and ensures its radial feed movement. This further optimizes the radial adjustment structure design of the adjustable coil winding.

[0015] As a preferred embodiment, the inlet end of the rotor housing is provided with a guide plate structure to uniformly guide the water flow to the rotor blade position on the inner sidewall of the rotor housing. The guide plate structure includes a conical guide head and water-distributing blades evenly distributed on the outer edge of the guide head, with the tip of the guide head facing the water inflow side. The tubular structure of the generator is optimized to ensure the thrust of the water flow on the rotor assembly's rotation.

[0016] As a preferred embodiment, the generator housing has axially extended extensions at both ends, and the ends of the extensions are provided with connecting pipe structures for connection and fixation with upstream and downstream pipelines. This optimizes the connection design between the generator and the upstream and downstream pipelines.

[0017] As a preferred embodiment, the rotor blades and the rotor housing are connected at an adjustable angle via a connecting shaft. The base of each connecting shaft is equipped with an angle control mechanism to adjust the angle of the rotor blades according to the water flow conditions. This optimization of the rotor blade design in the rotor assembly allows for a more controllable interference effect of the rotor on the water flow passing through the pipeline.

[0018] As a preferred embodiment, the generator housing is equipped with an electrical control box for integrating the connectors of the fixed coil winding and the adjustable coil winding. The electrical control box also includes a motor controller that is connected to the radial adjustment motor, the axial feed motor, and the angle control mechanism. This optimizes the generator's circuit control structure design.

[0019] As a preferred embodiment, a water pressure sensor is installed inside the rotor housing, and a main control module is installed inside the electrical control box. Both the water pressure sensor and the motor controller are connected to the main control module. A speed sensor is also connected to the rotor housing and is connected to the main control module. Attached Figure Description

[0020] Figure 1 A schematic diagram of a water pipeline power generation device with flow regulation and pressure regulation functions provided by the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the other side of a water pipeline power generation device with flow and pressure regulation functions;

[0022] Figure 3 for Figure 1 A side cross-sectional schematic diagram of a power generation device for a water pipeline with flow and pressure regulation functions.

[0023] Figure 4 for Figure 1 A schematic diagram of the stator assembly of a water pipeline power generation device with flow and pressure regulation functions;

[0024] Figure 5 for Figure 4 Enlarged schematic diagram of a portion of the structure on one side of the middle stator assembly;

[0025] Figure 6 for Figure 1 A schematic diagram of the internal structure of the adjustable coil winding in the stator assembly of a water pipeline power generation device with flow and pressure regulation functions.

[0026] Figure 7 for Figure 1 A schematic diagram of the rotor assembly of a water pipeline power generation device with flow and pressure regulation functions.

[0027] in, Figures 1-7 middle:

[0028] 1. Generator housing; 1-1. Electrical control box; 1-2. Extension section; 1-3. Connecting pipe structure; 2. Stator assembly; 2-1. Stator inner shell; 2-2. Fixed coil winding; 2-3. Adjustable mounting ring; 2-4. Adjustable coil unit; 2-5. Guide slider; 2-6. Guide groove; 2-7. Annular gear ring; 2-8. Gear screw; 2-9. Mounting plate; 2-10. Sliding hole; 2-11. Radial adjustment motor; 2-12. Fixed rack; 3. Rotor assembly; 3-1. Rotor shell; 3-2. Permanent magnet assembly; 3-3. Rotor blades; 3-4. Connecting shaft; 4. Guide plate structure; 4-1. Guide head; 4-2. Water distribution blades. Detailed Implementation

[0029] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] refer to Figures 1-4 , Figure 7 , Figure 1 A schematic diagram of a water pipeline power generation device with flow regulation and pressure regulation functions provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the other side of a water pipeline power generation device with flow and pressure regulation functions; Figure 3 for Figure 1 A side cross-sectional schematic diagram of a power generation device for a water pipeline with flow and pressure regulation functions. Figure 4 for Figure 1 A schematic diagram of the stator assembly of a water pipeline power generation device with flow and pressure regulation functions; Figure 6 for Figure 1 A schematic diagram of the rotor assembly of a water pipeline power generation device with flow and pressure regulation functions.

[0031] This embodiment provides a water pipeline power generation device with flow and pressure regulation functions, including a tubular generator housing 1 with both ends connected to the pipeline, a stator assembly 2 fixedly installed in the housing, and a tubular rotor assembly 3 coaxially nested in the stator assembly 2. The stator assembly 2 includes a fixed coil winding 2-2 evenly distributed on the outer circumferential surface of the rotor assembly 3 and an adjustable coil winding that can move along the axial direction of the rotor assembly 3 and adjust its axial position to change the magnetic flux. The rotor assembly 3 includes a tubular rotor shell 3-1 for accommodating water flow. The inner circumferential surface of the rotor shell 3-1 is provided with multiple sets of rotor blades 3-3 distributed in a spiral pattern. The outer circumferential surface of the rotor shell 3-1 is provided with a permanent magnet group 3-2 that inductively cooperates with the fixed coil winding 2-2 and the adjustable coil winding. The rotor assembly 3 rotates coaxially with the stator assembly 2 to generate electricity under the pushing action of the water flow on the rotor blades 3-3.

[0032] The water pipeline power generation device with flow and pressure regulation function provided in this embodiment of the invention improves the design of traditional hydropower devices. Its overall structure is a shell-like structure that can be directly connected to the water pipeline, thereby reducing the higher requirements of traditional open generator sets for water flow and stability. This allows the device to utilize the relatively insufficient water potential energy in the water pipeline, thereby effectively recovering and utilizing the hydraulic potential energy resources from the upstream reservoir to the downstream water plant, or from the water plant to the downstream water user, and avoiding waste.

[0033] Specifically, through a nested, tubular rotor and stator structure, water is transported through the internal rotor shell. The rotor's inner blade structure interacts with the water flow, driving the rotor to rotate and inducing electricity through the stator's coil windings. The coil windings include an adjustable section; the axial relative movement between this structure and the rotor adjusts the total magnetic flux generated by electromagnetic induction, thereby adjusting the generator's resistance to the water flow. This adaptive adjustment to current water pressure and flow rate prevents insufficient rotor rotation due to low water flow or inadequate potential energy recovery due to excessive water flow. This design achieves optimal power generation and allows for control of flow and pressure within a certain range, enhancing pipeline safety. In summary, this invention provides a water pipeline power generation device with flow and pressure regulation functions, effectively solving the technical problem of existing hydropower technologies' inability to utilize water transport between upstream and downstream reservoirs around cities for power generation, resulting in energy waste.

[0034] The above-mentioned pipeline power generation devices can be connected in series in multiple stages and distributed in various parts of the same water network. Wherever there is potential energy due to drop, but it is necessary to depressurize through flow limiting valves and pressure regulating valves, this type of pipeline generator can be installed to recover and utilize the potential energy that would otherwise be wasted through depressurization. This allows for more comprehensive and full utilization of water energy on the basis of normal reservoir hydropower generation.

[0035] In the technical solution provided in this embodiment, the stator assembly 2 also includes a tubular stator inner shell 2-1 located between the generator housing 1 and the fixed coil winding 2-2. The fixed coil winding 2-2 is evenly distributed and fixed on the inner side of the stator inner shell 2-1. An adjustable mounting ring 2-3 is slidably sleeved on the outer circumference of the stator inner shell, and the adjustable coil winding is installed on the side wall of the adjustable mounting ring 2-3.

[0036] It should be noted that, in conjunction with the distribution of the fixed coil windings, the distribution of the permanent magnet groups fixed on the rotor housing also exhibits a similar pattern, namely, a group distribution that is circumferentially uniform. However, the density of the permanent magnet groups varies in different regions along the axial direction. Therefore, the adjustable coil windings can be adjusted by changing their axial position relative to the rotor assembly to achieve the effect of changing magnetic characteristics.

[0037] The design optimizes the overall structure of the stator assembly and the structure of the adjustable winding. The stator inner shell is nested within the inner edge of the generator housing. The fixed coil winding includes multiple coil units, which are evenly distributed along the axial and circumferential directions of the inner surface of the stator inner shell. The cylindrical structure of the stator inner shell facilitates both the installation of the fixed coil winding and the axial sliding fit of the adjustable coil winding. An adjustable mounting ring is provided on the outer circumference of the stator inner shell to facilitate the placement of the adjustable coil winding.

[0038] Based on the structure of the above embodiment, in the technical solution of this embodiment: the outer side wall of the stator inner shell 2-1 is provided with a plurality of guide grooves 2-6 along the axial direction, and the inner side wall of the adjustable mounting ring 2-3 is provided with a protruding guide slider 2-5, which slides in cooperation with the guide groove 2-6; a fixed rack along its length is provided in one of the guide grooves 2-6, and an axial adjustment gear that meshes with the fixed rack is provided on one side of the guide slider 2-5 that cooperates with it. The axial adjustment gear is driven by an axial feed motor, which drives the shaft adjustment gear to rotate, thereby driving the adjustable mounting ring 2-3 to move axially along the stator inner shell 2-1.

[0039] This technical solution further optimizes the structure of the adjustable coil winding and its corresponding stator structure design to achieve optimized control of axial feed. Specifically, a guide groove is set along the axial direction on the outer wall of the inner stator shell, and a guide slider is set on the inner side of the adjustable mounting ring. Through the sliding cooperation between the guide slider and the guide groove, the adjustable mounting ring can be circumferentially limited when sliding axially to prevent offset rotation, so as to adapt to the working mode of induction power generation.

[0040] refer to Figure 5 , Figure 5 for Figure 4 A magnified schematic diagram of a portion of the structure on one side of the middle stator assembly.

[0041] Furthermore, a fixed rack 2-12 along its length is set in one of the guide grooves, and a gear is set on one side of the guide slider that cooperates with it. The gear is connected to a motor drive, and the rotation of the axial adjustment gear is driven by the output rotation of the motor. Under the action of the fixed rack that cooperates with it, the axial feed of the adjustable mounting ring is driven. This axial feed action control structure is stable to operate, simple to implement, and easy to automate. It is convenient to adjust the axial position of the adjustable coil winding at any time according to the water flow conditions under working conditions.

[0042] In the technical solution provided in this embodiment, the adjustable coil winding includes multiple adjustable coil units 2-4 mounted circumferentially on the inner sidewall of the adjustable mounting ring 2-3. Each adjustable coil unit 2-4 includes a closed loop coil and a mounting plate 2-9 for mounting and fixing the coil. The adjustable coil unit 2-4 is connected to a radial distance adjustment structure for adjusting the radial distance between the adjustable coil unit 2-4 and the rotor assembly 3.

[0043] Based on the adjustable axial position of the adjustable coil winding in the above embodiment, the adjustable range and adjustment index of the magnetic flux between the rotor and stator are further optimized by adjusting the radial distance. A radial distance adjustment structure is set up so that the radial distance between the adjustable coil winding and the rotor permanent magnet can also be adjusted. This can further change the induced magnetic characteristics between the permanent magnet and the coil winding, and obtain a larger magnetic characteristic adjustment range. This allows for more complete adjustment of the operating parameters of the power generation components to adapt to water flow conditions. For example, when the water flow is low and the pressure is low, the magnetic flux resistance is reduced, and when the water flow is high and the water pressure is high, the magnetic flux resistance is increased. This can not only optimize the power generation and stabilize the average power generation, but also adaptively adjust the flow conditions in the pipeline. For example, by adjusting the water flow resistance, the water pressure can be reduced to ensure pipeline safety.

[0044] refer to Figure 6 , Figure 6 for Figure 1 A schematic diagram of the internal structure of the adjustable coil winding in the stator assembly of a water pipeline power generation device with flow and pressure regulation functions.

[0045] In the technical solution provided in this embodiment, the radial distance adjustment structure includes an annular gear ring 2-7 disposed on the outer edge of the adjustable mounting ring 2-3 and rotatably coaxial with the adjustable mounting ring 2-3, and also includes a gear screw 2-8 that cooperates with the annular gear ring 2-7. The gear side of the gear screw 2-8 meshes with the annular gear ring 2-7, and its screw side is threadedly engaged with the threaded hole in the middle of the mounting plate 2-9. The rotation of the annular gear ring 2-7 drives the gear screw 2-8, and the rotation of the gear screw 2-8 drives the adjustable coil unit to feed radially along the stator assembly 2.

[0046] This design optimizes the specific structure of radial adjustment of the adjustable coil winding, providing a simple and feasible radial adjustment solution. The rotation of the gear screw is driven by the rotation of the annular gear ring, and through the threaded engagement with the mounting plate, the radial feed of the mounting plate and the coil fixed on it is controlled. This design features a simple structure and good control performance.

[0047] Further, based on the structure of the above embodiment, a radial adjustment motor 2-11 is installed on the side wall of the adjustable mounting ring 2-3. The radial adjustment motor 2-11 is driven to rotate by the annular gear ring 2-7 through an output gear. The rotational movement of the annular gear ring driven by the output of the radial adjustment motor facilitates automated adjustment and control, and also facilitates remote and feedback control.

[0048] In the technical solution provided in this embodiment, a guide post is provided on the inner side of the adjustable mounting ring 2-3 at the position of each mounting plate 2-9. A sliding hole 2-10 is provided at the corresponding position of the mounting plate 2-9 to slide with the guide post. The cooperation between the guide post and the sliding hole 2-10 limits the mounting plate 2-9, ensuring its radial feed movement. This mainly provides a design to ensure the feed direction of the adjustable coil winding for radial feed adjustment. This is achieved by providing a guide post on the inner side of the adjustable mounting ring. The guide post is along the radial direction of the entire device, i.e., parallel to the radial feed direction of the mounting plate. A sliding hole is provided on the mounting plate, through which the guide post passes. The cooperation between the two limits the radial feed of each adjustable winding unit, preventing accidental movement.

[0049] In the technical solution provided in this embodiment, a guide plate structure 4 is provided at the inlet end of the rotor housing 3-1 to guide the water flow evenly to the rotor blade 3-3 position on the inner side wall of the rotor housing 3-1. The guide plate structure 4 includes a conical guide head 4-1 and water-dividing blades 4-2 evenly distributed on the outer edge of the guide head 4-1. The tip of the guide head 4-1 faces the water flow side.

[0050] This design is adaptively optimized for the tubular structure of the generator to ensure the thrust of the water flow on the rotor assembly. A guide plate structure is set in the central area of ​​the water inlet end of the rotor housing. The incoming water is evenly dispersed to the outer periphery through the conical or near-conical guide head in the middle, thereby ensuring that the water flow preferentially passes through the rotor blade position on the inner side wall of the rotor housing. This avoids the situation where when the water flow is small, the water flow only passes through a local area inside the rotor housing and is insufficient to drive the rotor blades to drive the rotor to rotate. This structure can effectively ensure the normal operation of the tubular generator.

[0051] In the technical solution provided in this embodiment, the generator housing 1 has axially extended extensions 1-2 at both ends, and the ends of the extensions 1-2 are provided with connecting pipe structures 1-3 for connecting and fixing with upstream and downstream pipelines. The structure of the water-transfer tubular generator is optimized for its application environment by providing connecting pipe structures on both sides of the generator housing, allowing for direct installation in water-transfer pipelines or replacement of a section of the pipeline. This design has universal compatibility with pipelines, ensuring convenient installation and replacement.

[0052] In the technical solution provided in this embodiment, an electrical control box 1-1 is provided on the generator housing 1 for integrating the joints of the fixed coil winding 2-2 and the adjustable coil winding. The electrical control box 1-1 is also provided with a motor controller that is connected to the radial adjustment motor and the axial feed motor. This design optimizes the circuit control structure design of the generator. The specific electrical control box can also integrate the corresponding conventional electrical control components of the generator set, and integrate them in a unified position outside the generator housing for convenient operation and maintenance.

[0053] In the technical solution provided in this embodiment, the rotor blades 3-3 and the rotor housing are connected at an adjustable angle via a connecting shaft 3-4. The base of the connecting shaft 3-4 is connected to an angle control mechanism, which is used to change the angle of the rotor blades 3-3 according to the water flow conditions.

[0054] This design optimizes the rotor blade design within the rotor assembly, allowing for more controllable interference with the water flow within the pipeline. The control of the rotor blade angle is essentially based on a similar principle to the adjustment of magnetic flux between the rotor and stator. Adjusting the blade angle more directly modulates the resistance of the rotor housing to the water flow, thus achieving a more direct effect on regulating the water pressure.

[0055] In the technical solution provided in this embodiment, a water pressure sensor is installed inside the rotor housing 3-1, and a main control module is installed inside the electrical control box 1-1. Both the water pressure sensor and the motor controller are connected to the main control module. A speed sensor is also connected to the rotor housing 3-1, and the speed sensor is connected to the main control module. By sensing the water pressure and speed, the water pressure and speed information in the power generation device pipeline are obtained. Combined with pre-set parameters such as the rotor housing diameter, the rotor's rotational resistance (obtained through the position information of the coil winding relative to the permanent magnet assembly), and the standard pressure and flow reference information in the housing, the main control module can directly calculate the real-time flow in the pipeline, acting as a flow meter. It can also control the motor controller through flow and pressure information feedback for more precise regulation, thereby obtaining the optimal power generation under the current water flow conditions. At the same time, it can more accurately regulate the water pressure in the housing, improving the safety of the water network pipeline.

[0056] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of this invention.

Claims

1. A water pipeline power generation device with flow and pressure regulation functions, characterized in that, The generator assembly includes a tubular generator housing (1) with both ends connected to pipelines, a stator assembly (2) fixedly installed in the housing, and a tubular rotor assembly (3) coaxially nested in the stator assembly (2). The stator assembly (2) includes a fixed coil winding (2-2) evenly distributed on the outer circumferential surface of the rotor assembly (3) and an adjustable coil winding that can move along the axial direction of the rotor assembly (3) and adjust its axial position to change the magnetic flux. The rotor assembly (3) includes a tubular rotor shell (3-1) for accommodating water flow. The inner circumferential surface of the rotor shell (3-1) is provided with multiple sets of rotor blades (3-3) distributed in a spiral pattern. The outer circumferential surface of the rotor shell (3-1) is provided with a permanent magnet group (3-2) that inductively cooperates with the fixed coil winding (2-2) and the adjustable coil winding. The rotor assembly (3) rotates coaxially with the stator assembly (2) to generate electricity under the pushing action of the water flow on the rotor blades (3-3). The stator assembly (2) further includes a tubular stator inner shell (2-1) located between the generator housing (1) and the fixed coil winding (2-2). The fixed coil winding (2-2) is evenly distributed and fixed on the inner side of the stator inner shell (2-1). An adjustable mounting ring (2-3) is axially slidably sleeved on the outer periphery of the stator inner shell (2-1). The adjustable coil winding is installed on the side wall of the adjustable mounting ring (2-3). The outer side wall of the stator inner shell (2-1) is provided with a plurality of guide grooves (2-6) along the axial direction, and the inner side wall of the adjustable mounting ring (2-3) is provided with a protruding guide slider (2-5), and the guide slider (2-5) slides in cooperation with the guide groove (2-6). One of the guide grooves (2-6) is provided with a fixed rack (2-12) along its length direction. The guide slider (2-5) that cooperates with it is provided with an axial adjusting gear on one side that meshes with the fixed rack (2-12). The axial adjusting gear is driven by an axial feed motor, which drives the axial adjusting gear to rotate, thereby driving the adjustable mounting ring (2-3) to move axially along the stator inner shell (2-1). The adjustable coil winding includes a plurality of adjustable coil units (2-4) mounted circumferentially on the inner sidewall of the adjustable mounting ring (2-3). Each adjustable coil unit (2-4) includes a closed loop coil and a mounting plate (2-9) for mounting and fixing the coil. The adjustable coil unit (2-4) is connected to a radial distance adjustment structure for adjusting the radial distance between the adjustable coil unit (2-4) and the rotor assembly (3). The radial distance adjustment structure includes an annular gear ring (2-7) disposed on the outer edge of the adjustable mounting ring (2-3) and rotatably coaxial with the adjustable mounting ring (2-3), and also includes a gear screw (2-8) that cooperates with the annular gear ring (2-7). The gear side of the gear screw (2-8) meshes with the annular gear ring (2-7), and its screw side is threadedly engaged with the threaded hole in the middle of the mounting plate (2-9). The rotation of the annular gear ring (2-7) drives the gear screw (2-8), and the rotation of the gear screw (2-8) drives the adjustable coil unit (2-4) to feed radially along the stator assembly (2). A radial adjustment motor is installed on the side wall of the adjustable mounting ring (2-3), and the radial adjustment motor is driven to rotate by the annular gear ring (2-7) through an output gear; The inner side of the adjustable mounting ring (2-3) is provided with a guide post at the position of each mounting plate (2-9). The mounting plate (2-9) is provided with a sliding hole (2-10) at the corresponding position that slides with the guide post. The mounting plate (2-9) is limited by the cooperation between the guide post and the sliding hole (2-10) to ensure its radial feed movement.

2. The water pipeline power generation device with flow and pressure regulation functions according to claim 1, characterized in that, The inlet end of the rotor housing (3-1) is provided with a guide plate structure (4) for uniformly guiding the water flow to the rotor blades (3-3) on the inner side wall of the rotor housing (3-1). The guide plate structure (4) includes a conical guide head (4-1) and water-dividing blades (4-2) uniformly distributed on the outer edge of the guide head (4-1). The tip of the guide head (4-1) faces the water flow inlet side.

3. The water pipeline power generation device with flow and pressure regulation functions according to claim 2, characterized in that, The generator housing (1) has axially extended extensions (1-2) at both ends, and the ends of the extensions (1-2) are provided with connecting pipe structures (1-3) for connecting and fixing with upstream and downstream pipelines.

4. The water pipeline power generation device with flow and pressure regulation functions according to claim 2, characterized in that, The rotor blades (3-3) and the rotor housing (3-1) are connected at an adjustable angle via a connecting shaft (3-4). The base of the connecting shaft (3-4) is connected to an angle control mechanism, which is used to change the angle of the rotor blades (3-3) according to the water flow conditions.

5. The water pipeline power generation device with flow and pressure regulation functions according to claim 4, characterized in that, The generator housing (1) is provided with an electrical control box (1-1) for integrating the joints of the fixed coil winding (2-2) and the adjustable coil winding. The electrical control box (1-1) is also provided with a motor controller that is connected to the radial adjustment motor, the axial feed motor and the angle control mechanism.

6. The water pipeline power generation device with flow and pressure regulation functions according to claim 5, characterized in that, A water pressure sensor is installed inside the rotor housing (3-1), and a main control module is installed inside the electrical control box (1-1). The water pressure sensor and the motor controller are both connected to the main control module. A speed sensor is also connected to the rotor housing (3-1), and the speed sensor is connected to the main control module.

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