Water transportation pipe power generation device with flow-regulating and pressure-regulating function

Patent metadata

Field	Value
Publication number	US-12429022-B2
Application number	US-202418419110-A
Country	US
Kind code	B2
Filing date	Jan 22, 2024
Priority date	Jul 31, 2023
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A water transportation pipe power generation device with flow-regulating and pressure-regulating function is provided comprising a tubular power generator housing, a stator component fixedly inside and a tubular rotor component coaxially disposed inside the stator component. The stator component comprises fixed coil windings uniformly distributed on an outer circumferential surface of the rotor component and an adjustable coil winding capable of performing axial movement along the rotor component and adjusting an axial position to change a magnetic flux. The rotor component comprises a tubular rotor housing for a water flow to run through. Multiple spirally-distributed rotor blades are disposed on an inner circumferential surface of the rotor housing, and permanent magnet groups in sensing cooperation with the fixed coil windings and the adjustable coil winding are disposed on an outer circumferential surface of the rotor housing. The rotor component can coaxially rotate for power generation relative to the stator component.

First claim

The invention claimed is:

1. A water transportation pipe power generation device comprising:
a tubular power generator housing, wherein two ends of the housing are configured to dock with a respective pipe;
a stator component fixedly mounted inside the housing;
a tubular rotor component coaxially disposed inside the stator component, the rotor component comprising multiple rotor blades and permanent magnet groups,
wherein the stator component comprises;
a plurality of fixed coil windings which are uniformly distributed about an outer circumferential surface of the rotor component, and
an adjustable coil winding configured to be axially adjusted relative to the rotor component to change a magnetic flux,

wherein the rotor component further comprises a tubular rotor housing for a water flow to run through the rotor component,
wherein the multiple rotor blades are disposed on an inner circumferential surface of the rotor housing,
wherein the permanent magnet groups are disposed on an outer circumferential surface of the rotor housing, and
wherein the rotor component is configured to coaxially rotate relative to the stator component under a push action by said water flow to the rotor blades to generate power with the stator component.

2. The water transportation pipe power generation device of claim 1 , wherein the stator component further comprises a tubular stator inner housing between the power generator housing and the plurality of fixed coil windings; the plurality of fixed coil windings are uniformly distributed and fixed on surface of the stator inner housing; an adjustable mounting ring axially and slidably sleeved around the stator inner housing, and the adjustable coil winding is mounted at a wall of the adjustable mounting ring.

3. The water transportation pipe power generation device of claim 2 , wherein a plurality of guide grooves are disposed axially on the stator inner housing, and convex guide slide blocks are disposed on the adjustable mounting ring; the guide slide blocks are in slide cooperation with the guide grooves.

4. The water transportation pipe power generation device of claim 3 , wherein a fixed rack is disposed along a length direction in one guide groove and an axial adjustment gear engaged with the fixed rack is disposed at a side of the guide slide block in cooperation with the guide groove; the axial adjustment gear is connected with an axial feed motor and the axial adjustment gear is configured to rotate under a drive of the axial feed motor to drive the adjustable mounting ring to move axially along the stator inner housing.

5. The water transportation pipe power generation device of claim 3 , wherein the adjustable coil winding comprises a plurality of adjustable coil units circumferentially mounted on the adjustable mounting ring; each adjustable coil unit comprises an additional coil and a mounting plate for fixedly mounting the additional coil; the adjustable coil units are connected with a radial distance adjustment structure to adjust a radial distance between the adjustable coil units and the rotor component.

6. The water transportation pipe power generation device of claim 5 , wherein the radial distance adjustment structure comprises an annular tooth ring disposed at an outer edge of the adjustable mounting ring and coaxially cooperating with the adjustable mounting ring and a gear screw rod in cooperation with the annular tooth ring; a gear side of the gear screw rod is engaged with the annular tooth ring, and a screw rod side is in thread cooperation with a thread hole in the middle part of the mounting plate; with the rotation of the annular tooth ring, the gear screw rod rotates and hence drives the adjustable coil unit to perform feed along a radial direction of the stator component.

7. The water transportation pipe power generation device of claim 6 , wherein a radial adjustment motor is mounted on the adjustable mounting ring and is in a rotatable drive cooperation with the annular tooth ring through an output gear.

8. The water transportation pipe power generation device of claim 6 , wherein a guide column is disposed at a position corresponding to each mounting plate at an inside of the adjustable mounting ring, and a slide hole in slide cooperation with the guide column is disposed at a corresponding position on the mounting plate; the mounting plate is limited and ensured its radial feed movement by the cooperation of the guide column and the slide hole.

9. The water transportation pipe power generation device of claim 1 , wherein a flow guide disk structure is disposed at an inlet end of the rotor housing to uniformly direct the water flow to the position of the rotor blades on the inner sidewall of the rotor housing; the flow guide disk structure comprises a conical flow guide head and water split blades uniformly distributed on an outer edge of the flow guide head; a pointed end of the flow guide head faces toward the incoming water.

10. The water transportation pipe power generation device of claim 9 , wherein an axially-extending extension part is disposed at both sides of the power generator housing respectively; an end head of the extension parts is provided with a pipe mouth docking structure to fixedly dock with the upstream and downstream pipes.

11. The water transportation pipe power generation device of claim 9 , wherein the rotor blades are connected to the rotor housing in an angle-adjustable manner by connection shafts; an angle control mechanism is connected at a base of each connection shaft to change an angle of the rotor blades based on the water flow circumstances.

12. The water transportation pipe power generation device of claim 11 , wherein the power generator housing is provided with an electric control box in which respective connectors of the plurality of fixed coil windings and the adjustable coil winding are integrated; the electric control box is further provided with a motor controller connected, in a controlled manner, with the radial adjustment motor, the axial feed motor and the angle control mechanism.

13. The water transportation pipe power generation device of claim 7 , wherein a water pressure sensor is disposed in the rotor housing and a primary control module is disposed in the electric control box; the water pressure sensor and the motor controller are both connected to the primary control module in a controlled manner, and the rotor housing is further connected with a rotation speed sensor in a sensing manner, and the rotation speed sensor is connected with the primary control module.

Assignees

• Univ Ningbo

Inventors

• Zheng Rongyue
• Yang Zesong
• Zhu David Zhiwei

Classifications

• H02K7/1823 Primary

  structurally associated with turbines or similar engines · CPC title

• F03B11/008

  Measuring or testing arrangements (in general G01) · CPC title

• F03B17/061

  with rotation axis substantially in flow direction · CPC title

• F03B3/04 Primary

  with substantially axial flow throughout rotors, e.g. propeller turbines {(rotors per se F03B3/126)} · CPC title

• F05B2220/706

  an electrical generator · CPC title