A hydroelectric power generation module

Abstract

The utility model discloses a hydroelectric power generation module, which relates to the technical field of water flow power generation. The technical scheme thereof is as follows: it comprises a main body, a power generation mechanism and a support, wherein the main body is provided with a main flow channel and a mounting hole connected to the main flow channel, and the two ends of the main flow channel are respectively a water inlet end and a water outlet end; the power generation mechanism is arranged in the mounting hole, and the support is arranged in the main flow channel, and a guide hole, a water outlet channel and a working groove are provided on the support, wherein the guide hole connects the water inlet end to the working groove, and the water outlet channel connects the working groove to the water outlet end, and the working groove is connected to the mounting hole and is provided for the power generation mechanism to extend therein, and the water flow is guided through the guide hole and then drives the power generation mechanism to generate electricity, and then is discharged through the water outlet channel. The water flow at the water inlet end is first guided through the guide hole and then drives the power generation mechanism to generate electricity, and then the water flow is discharged into the water outlet end through the water outlet channel, and the water flow is difficult to flow back through the water outlet channel, thereby ensuring that the flow direction of the water flow is always in a unidirectional flow state, thereby ensuring that the power generation mechanism can generate electricity stably.

Description

Technical Field

[0001] The utility model relates to the technical field of water flow power generation, in particular to a water power generation module. Background Art

[0002] At present, the hydroelectric generator is one of the more commonly used generators. It guides the water flow to impact the impeller, converting the kinetic energy of the water into mechanical energy that drives the impeller to rotate. The hydroelectric generator converts the mechanical energy into electrical energy and outputs it according to the principle of generating electricity by coil cutting the magnetic field, thereby realizing hydroelectric power generation.

[0003] A Chinese patent with announcement number CN201116508Y discloses a micro water flow generator. It can be seen from the specification and the drawings that water inlet pipes and water outlet pipes whose center lines are not in the same straight line are arranged on the left and right sides of the turbine housing, and the water inlet pipes and the water outlet pipes are perpendicular to the center line of the water wheel. The disadvantage of this solution is that the generator is large in size, requires a large space for use, and has the limitation of being inconvenient to use and install.

[0004] The Chinese patent with the announcement number CN201358874Y discloses a small DC claw-pole hydroelectric power generation device, including a body A and a body B forming a housing, a rotor and a stator, one end of the housing is a water inlet, and the other end is a water outlet; the rotor includes a rotating shaft and an impeller, the impeller is provided with blades with a certain inclination angle with the center line of the impeller, and the lower part of the impeller is inlaid with a number of permanent magnets, which are distributed in the same annular domain at equal angles, the rotor is arranged in the housing, the center line of the rotating shaft coincides with the center line connecting the water inlet and outlet of the housing, one end of the rotating shaft is fixed to the water diversion body through a bearing, and the other end is also installed on the fixed seat through a bearing; the stator is arranged on the outer periphery of the permanent magnet in the rotor. This kind of generator is small in size, saves space, and is suitable for pipeline use. During operation: after the fluid enters the water diversion body from the water inlet, it impacts the blades on the impeller through the oblique holes, causing the impeller and the permanent magnet to rotate synchronously. Since the permanent magnet rotates relative to the claw pole and the enameled coil, a magnetic flux is generated. This magnetic flux interlinks with the coil of the stator part of the generator and generates an electromotive force in the direction that hinders the change of the magnetic flux flow. This electromotive force is rectified and supplies power to external electrical components or storage devices.

[0005] Conventional hydroelectric generators can only ensure the highest power generation efficiency at rated speed. The above-mentioned power generation device has only a single water inlet and outlet. Before the water flow in the pipeline is discharged from the outlet, all the water needs to do work for the impeller. This kind of small-power, micro-generator used on the pipeline is very easy to be disturbed by the water flow in the pipeline. If the water output at the end of the pipeline is small, the water flow and flow rate in the pipeline will decrease accordingly, and the water flow force driving the generator to generate electricity will also decrease accordingly; or the water pressure fluctuations at the municipal water supply end will also cause the water flow in the pipeline to be unstable, affecting the power generation efficiency of the generator. In other words, the drainage volume of the water device at the end of the pipeline will directly affect the speed of the impeller. If the drainage volume at the end (faucet) is small, the liquid flow rate in the pipeline is low and the impeller speed is slow. On the contrary, if the drainage volume at the end is large, the impeller speed is fast, especially when the water pressure in the pipeline is unstable, resulting in the water output being fast and slow, and it is difficult for the impeller to work at the rated speed, making the power generation efficiency of the generator unstable. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a hydroelectric power generation module, which solves the problem of unstable power generation of the generator.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions: a hydroelectric power generation module, comprising a body, a power generation mechanism and a support, the body having a main flow channel and a mounting hole connected to the main flow channel, the two ends of the main flow channel are a water inlet end and a water outlet end respectively; the power generation mechanism is arranged in the mounting hole, the support is arranged in the main flow channel, a guide hole, a water outlet channel and a working groove are provided on the support, the guide hole connects the water inlet end to the working groove, the water outlet channel connects the working groove to the water outlet end, the working groove is connected to the mounting hole and is for the power generation mechanism to extend into, the water flow is guided by the guide hole and drives the power generation mechanism to generate electricity, and then is discharged through the water outlet channel, a secondary flow channel is provided in the support to connect the water inlet end and the water outlet end, and a one-way valve is provided in the secondary flow channel.

[0008] Through the above technical scheme, the main body is connected to the pipeline so that the water flows from the water inlet end to the water outlet end; most of the water in the main channel flows out through the secondary channel, which effectively reduces the influence of the power generation mechanism on the water pressure and ensures the water pressure of normal water use. The one-way valve can prevent the water at the water outlet end from flowing back to the water inlet end; another part of the water at the water inlet end is first guided by the guide hole, enters the working tank in the same direction and drives the power generation mechanism to generate electricity, and then the water flows into the water outlet end through the water outlet channel, which can effectively utilize the limited water flow to drive the power generation mechanism to generate electricity, and the water flow is difficult to flow back through the water outlet channel, ensuring that the water flow direction is always in a one-way flow state, thereby ensuring that the power generation mechanism can generate electricity stably; in addition, the present hydropower generation module is used as an integral module, which can power other low-power equipment and can be used in combination with other leak detection products, with good versatility.

[0009] Preferably, the water outlet channel is connected to the bottom of the working tank.

[0010] Through the above technical solution, after the water flow drives the power generation mechanism to generate electricity in the working tank, it can flow out to the water outlet channel below under the action of its own weight, thereby preventing the reverse flow of water in the pipeline from the structure of the water outlet channel.

[0011] Preferably, the cross-sectional area of ​​the guide hole is smaller than the cross-sectional area of ​​the water outlet channel.

[0012] Through the above technical solution, the diversion hole reduces the area through which the water flow passes, thereby increasing the flow rate of the water flow at the diversion hole and improving the power generation efficiency of the power generation mechanism; moreover, the diversion hole is smaller than the water outlet channel, which can effectively prevent the water from flowing back through the diversion hole.

[0013] Preferably, the direction of water flow in the water outlet channel is the same as the direction of water flow in the water outlet end.

[0014] Through the above technical solution, it is ensured that the flow direction of the water flowing out of the water outlet channel is the same as the flow direction of the water in the water outlet end, and the backflow of the water flow can be further avoided.

[0015] Preferably, the power generation mechanism includes a shell, a coil, a magnet, a main shaft and an impeller, the shell is connected to the body, the coil is arranged in the shell, the magnet is rotatably arranged in the coil, the main shaft connects the magnet to the impeller, and the impeller is close to the guide hole and can rotate in the working groove.

[0016] Through the above technical solution, the high-speed water flow out of the guide hole will impact the impeller, causing the impeller to drive the main shaft and the magnet to rotate as a whole, and the coil can cut the magnetic lines of force, thereby achieving power generation.

[0017] Preferably, the cross-sectional shape of the working groove includes a circle, and the flow direction of the water flow in the guide hole is tangent to the inner wall of the working groove.

[0018] Through the above technical solution, the impeller rotates in the working groove, and the circular working groove can ensure that the water flow can generate a vortex in the working groove, thereby avoiding the reverse flow of the water flow; in addition, the water flow in the guide hole can flow along the groove wall of the working groove under the action of inertia, increasing the rotation speed of the water flow in the working groove, and further increasing the rotation speed of the impeller.

[0019] Preferably, a Hall sensor is provided on the housing, and the Hall sensor can detect the rotation speed of the impeller.

[0020] Through the above technical solution, the rotation speed of the magnet is detected by the Hall sensor. Since the rotation speed of the impeller and the magnet is the same, the number of rotations of the magnet is equal to the number of rotations of the impeller, so that it can be used in conjunction with other leakage detection products, thereby improving the versatility of the hydropower generation module.

[0021] Preferably, the guide hole and the secondary flow channel are arranged in a staggered manner, and the cross-sectional area of ​​the secondary flow channel is larger than the cross-sectional area of ​​the guide hole.

[0022] Through the above technical solution, the cross-sectional area of ​​the secondary flow channel is larger, and the area available for water flow to pass through is also larger. Most of the water flow in the pipeline can enter the water outlet through the secondary flow channel, further reducing the impact of the power generation mechanism on the water pressure.

[0023] Preferably, an end of the secondary flow channel close to the water outlet is provided with a closing end, and the cross-sectional area of ​​the closing end is smaller than the cross-sectional area of ​​the secondary flow channel.

[0024] Through the above technical scheme, the setting of the closing mouth further prevents the water flow at the water outlet from flowing back to the water inlet end through the secondary flow channel, so that the flow velocity in the closing mouth is higher than the flow velocity in the secondary flow channel, and the water flow discharged from the water outlet channel directly follows the water flow discharged from the closing mouth to flow to the water outlet end.

[0025] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0026] 1. It can effectively avoid water backflow, ensure power generation efficiency and will not affect normal water pressure;

[0027] 2. The power generation of the power generation mechanism is stable and the water flow utilization rate is high;

[0028] 3. The water pressure of normal domestic water is not affected by water used for power generation, and users have a better water experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the external structure of the embodiment;

[0030] Figure 2 is a cross-sectional schematic diagram of the body in the embodiment;

[0031] Figure 3 for Figure 1 Full cross-sectional diagram (the direction of arrows is the direction of water flow);

[0032] Figure 4 is a schematic diagram of the external structure of the support in the embodiment;

[0033] Figure 5 This is a schematic diagram of the top structure of the support in the embodiment;

[0034] Figure 6 for Figure 5 Middle, schematic cross-sectional view of section AA;

[0035] Figure 7 for Figure 5 middle, schematic cross-sectional view of the BB portion;

[0036] Figure 8 It is a partial cross-sectional schematic diagram of an embodiment;

[0037] Fig. 9 This is a schematic diagram of the structure of a one-way valve in an embodiment;

[0038] Fig.10 for Fig. 9 A full cross-sectional diagram of

[0039] Fig.11 Schematic diagram of the external structure of the power generation mechanism in the embodiment.

[0040] Reference numerals: 100, body; 110, main flow channel; 111, water inlet end; 112, water outlet end; 120, mounting hole;

[0041] 200, power generation mechanism; 210, housing; 211, Hall sensor; 220, coil; 230, magnet; 240, main shaft; 250, impeller;

[0042] 300, support; 310, guide hole; 320, water outlet channel; 330, working groove; 331, positioning groove; 332, reinforcing bead; 340, secondary flow channel; 350, closing;

[0043] 400, one-way valve; 410, bracket; 411, connecting channel; 420, piston; 430, compression spring; 440, limit ring. DETAILED DESCRIPTION

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0045] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0046] A hydroelectric power generation module, such as Figures 1 to 11 As shown, the hydropower generation module includes a body 100, a power generation mechanism 200 and a support 300. The body 100 is provided with a main flow channel 110 and a mounting hole 120 connected to the main flow channel 110. One end of the main flow channel 110 is a water inlet end 111, and the other end is a water outlet end 112. The power generation mechanism 200 is arranged in the mounting hole 120, and the support 300 is arranged in the main flow channel 110. A guide hole 310, a water outlet channel 320, and a working groove 330 are opened on the support 300. The guide hole 310 connects the water inlet end 111 to the working groove 330, and the water outlet channel 320 connects the working groove 330 to the water outlet end 112. The working groove 330 is connected to the mounting hole 120 and is provided for the power generation mechanism 200 to extend into. After the water flows through the guide hole 310, it drives the power generation mechanism 200 to generate electricity, and then is discharged through the water outlet channel 320.

[0047] Preferably, the central axis of the guide hole 310 is parallel to the central axis of the main channel 110 .

[0048] The diversion hole 310 is close to the side of the power generation mechanism 200, and the cross-sectional area of ​​the diversion hole 310 is smaller than the cross-sectional area of ​​the water outlet channel 320, that is, the water inlet area of ​​the diversion hole 310 is smaller than the water outlet area of ​​the water outlet channel 320. The water outlet channel 320 is connected to the bottom of the working tank 330, and the water flow direction in the water outlet channel 320 is the same as the water flow direction in the water outlet end 112. In this embodiment, two water outlet channels 320 are symmetrically arranged and spaced apart at the bottom of the working tank 330.

[0049] The power generation mechanism 200 includes a housing 210, a coil 220, a magnet 230, a main shaft 240 and an impeller 250. The housing 210 is snap-fitted or threadedly connected to the mounting hole 120. The coil 220 is disposed in the housing 210. The magnet 230 is rotatably disposed in the coil 220. The magnet 230 is connected to the main shaft 240. The main shaft 240 connects the magnet 230 to the impeller 250. The impeller 250 is close to the guide hole 310 and can rotate in the working groove 330. As another solution, the power generation mechanism 200 can also be a common hydroelectric generator in the prior art.

[0050] Furthermore, a positioning groove 331 is formed at the bottom of the working groove 330 , and a reinforcing bead 332 is arranged in the positioning groove 331 . The reinforcing bead 332 provides support for the lower end of the main shaft 240 , thereby preventing the lower end of the main shaft 240 from directly rubbing against the working groove 330 .

[0051] The cross-sectional shape of the working groove 330 is preferably circular, and the flow direction of the water in the guide hole 310 is tangent to the inner wall of the working groove 330 .

[0052] The housing 210 is provided with a Hall sensor 211, which can detect the rotation speed of the impeller 250. Since the impeller 250 and the magnet 230 have the same rotation speed, the number of rotations of the impeller 250 can be obtained by first measuring the number of rotations of the magnet 230 through the Hall sensor 211, which can facilitate the monitoring of the rotation speed of the impeller 250 in the later stage; after the hydropower generation module is connected with other detection equipment, the data of the impeller 250 can also be transmitted to the detection equipment.

[0053] A secondary flow channel 340 is provided in the support 300 to connect the water inlet end 111 and the water outlet end 112. The secondary flow channel 340 and the guide hole 310 are staggered, and the cross-sectional area of ​​the secondary flow channel 340 is larger than the cross-sectional area of ​​the guide hole 310; a closure 350 is provided at one end of the secondary flow channel 340 close to the water outlet end 112, and the cross-sectional area of ​​the closure 350 is smaller than the cross-sectional area of ​​the secondary flow channel 340.

[0054] A one-way valve 400 is arranged in the secondary flow channel 340. In the present embodiment, the one-way valve 400 includes a bracket 410, a piston 420, a compression spring 430 and a limiting ring 440. The bracket 410 is snap-fitted or threadedly connected to the main flow channel 110. The bracket 410 has a connecting flow channel 411. The rod of the piston 420 is slidably connected to the bracket 410. The head of the piston 420 faces the water inlet end 111 and can be tightly pressed against the inner ring of the limiting ring 440. The compression spring 430 is located between the head of the piston 420 and the bracket 410. The limiting ring 440 is connected to the bracket 410 and is close to the water inlet end 111, and the inner ring of the limiting ring 440 is connected to the water inlet end 111. Under normal circumstances, the compression spring 430 applies a preload force to the piston 420 pointing to the side of the limit ring 440, so that the head of the piston 420 blocks the inner ring of the limit ring 440. At this time, the one-way valve 400 is in a closed state; after the water pressure at the water outlet end 112 is reduced, a pressure difference is generated on both sides of the piston 420. After the pressure difference exceeds the preload force of the compression spring 430 on the piston 420, the water pressure on the side of the water inlet end 111 pushes the piston 420 toward the water outlet end 112 and makes the piston 420 move away from the limit ring 440, thereby opening the secondary flow channel 340. At this time, the one-way valve 400 is in an open state, and the water flow at the water inlet end 111 will pass through the limit ring 440, the secondary flow channel 340, and the connecting flow channel 411 and enter the water outlet end 112; in order to ensure the sealing effect between the piston 420 and the limit ring 440, a sealing ring can also be set between the head of the piston 420 and the limit ring 440.

[0055] As another solution, the one-way valve 400 may also be a one-way valve commonly used in the prior art, as long as it ensures that the water flow at the water inlet end 111 can only flow in one direction toward the water outlet end 112 .

[0056] Working principle:

[0057] The body 100 is connected to a pipeline or other detection equipment so that water flows from the water inlet 111 to the water outlet 112 .

[0058] Most of the water flow in the water inlet end 111 enters the limiting ring 440. As the water pressure at the water inlet end 111 increases, the piston 420 will be opened by the water pressure. Then the water flows through the limiting ring 440 and enters the water outlet end 112 from the secondary flow channel 340 and the connecting flow channel 411. This part of the water flow can ensure normal water use, and the one-way valve 400 ensures that the water flow in the secondary flow channel 340 will not flow back.

[0059] Another part of the water flow in the water inlet end 111 enters the working groove 330 after being guided by the guide hole 310 and impacts the impeller 250, so that the impeller 250 drives the main shaft 240 and the magnet 230 to rotate, and the coil 220 can cut the magnetic flux lines of the magnet 230 to generate electricity;

[0060] The water flow accelerated by the guide hole 310 continues to enter the working groove 330. While driving the impeller 250 to rotate, the water flow will also generate a rotating vortex along the inner wall of the working groove 330, further increasing the rotation speed of the impeller 250. Thereafter, the water flow enters the water outlet channel 320 under the action of its own weight, and enters the water outlet end 112 through the water outlet channel 320. During this process, the water flow cannot flow back, so that the power generation mechanism 200 can generate electricity stably, and the power generation mechanism 200 has little effect on the water pressure.

[0061] Since the flow velocity in the constriction 350 is higher than the flow velocity in the secondary flow channel 340 , the water discharged from the water outlet channel 320 directly follows the water discharged from the constriction 350 to flow toward the water outlet end 112 .

[0062] In addition, the hydropower module is used as an integral module, which can supply power to other low-power equipment and can also be used in combination with other side leakage products, with good versatility and interchangeability.

[0063] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A hydropower generation module, characterized in that: The invention comprises a body (100), a power generation mechanism (200) and a support (300), wherein the body (100) is provided with a main flow channel (110) and a mounting hole (120) connected to the main flow channel (110), and the two ends of the main flow channel (110) are respectively a water inlet end (111) and a water outlet end (112); the power generation mechanism (200) is arranged in the mounting hole (120), the support (300) is arranged in the main flow channel (110), and a flow guide hole (310), a water outlet channel (320) and a working groove (330) are provided on the support (300), and the flow guide hole (310) guides the water inlet end (111) and the water outlet end (112) thereof. The water end (111) is connected to the working groove (330), and the water outlet channel (320) connects the working groove (330) to the water outlet end (112). The working groove (330) is connected to the mounting hole (120) and allows the power generation mechanism (200) to extend therein. After the water flows through the guide hole (310), it drives the power generation mechanism (200) to generate electricity, and then is discharged through the water outlet channel (320). A secondary flow channel (340) is provided in the support (300) to connect the water inlet end (111) and the water outlet end (112), and a one-way valve (400) is provided in the secondary flow channel (340).

2. The hydroelectric power generation module according to claim 1, characterized in that: The water outlet channel (320) is in communication with the bottom of the working tank (330).

3. The hydroelectric power generation module according to claim 1, characterized in that: The cross-sectional area of ​​the flow guide hole (310) is smaller than the cross-sectional area of ​​the water outlet channel (320).

4. The hydroelectric power generation module according to claim 1, characterized in that: The direction of water flow in the water outlet channel (320) is the same as the direction of water flow in the water outlet end (112).

5. The hydropower generation module according to any one of claims 1 to 4, characterized in that: The power generation mechanism (200) comprises a housing (210), a coil (220), a magnet (230), a main shaft (240) and an impeller (250); the housing (210) is connected to the body (100); the coil (220) is arranged in the housing (210); the magnet (230) is rotatably arranged in the coil (220); the main shaft (240) connects the magnet (230) and the impeller (250); the impeller (250) is close to the guide hole (310) and can rotate in the working groove (330).

6. The hydroelectric power generation module according to claim 5, characterized in that: The cross-sectional shape of the working groove (330) includes a circle, and the flow direction of the water flow in the guide hole (310) is tangent to the inner wall of the working groove (330).

7. The hydroelectric power generation module according to claim 5, characterized in that: A Hall sensor (211) is provided on the housing (210), and the Hall sensor (211) is capable of detecting the rotation speed of the impeller (250).

8. The hydroelectric power generation module according to claim 1, characterized in that: The guide hole (310) and the secondary flow channel (340) are arranged in a staggered manner, and the cross-sectional area of ​​the secondary flow channel (340) is greater than the cross-sectional area of ​​the guide hole (310).

9. The hydroelectric power generation module according to claim 1, characterized in that: An end of the secondary flow channel (340) close to the water outlet end (112) is provided with a closing opening (350), and the cross-sectional area of ​​the closing opening (350) is smaller than the cross-sectional area of ​​the secondary flow channel (340).

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