Water flow power generation system

Abstract

The invention discloses a water flow power generation system which comprises a water pipe and a first-stage flow guide module, a second-stage flow guide module and a power generation module which are installed on the water pipe, the first-stage flow guide module comprises a handle, a water valve rotating shaft and a valve part, and water flow generates first-stage flow guide under the adjusting direction of opening of the valve part; the second-stage flow guide module is located at the water outlet end of the first-stage flow guide and comprises a flow guide piece and a flow guide piece installation piece, water flow passing through the first-stage flow guide impacts on the flow guide piece to generate second-stage flow guide, and under the action of the flow guide piece, the second-stage flow guide module is located at the water outlet end of the first-stage flow guide; and an off-axis water flow field generated by secondary flow guide has asymmetric flow field distribution on the two sides of the power generation impeller shaft. The water flow power generation system is used for overcoming the defects that in the prior art, the flow guide direction does not change along with the water flow speed, and the power generation efficiency is low at the low flow speed, and has the advantages of being simple in structure, high in power generation efficiency, easy to install and maintain and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of water flow power generation, and in particular relates to a water flow power generation system. Background Art

[0002] In water supply, drainage and water treatment systems, using water flow to generate electricity to provide power for monitoring and control circuits can save on the layout of power supply lines and facilitate the flexible layout of the Internet of Things front end.

[0003] In the field of patent applications, the following technologies for generating electricity using water pipe flow have emerged:

[0004] The patent application with application number CN202311520349.3 and invention name "An impeller device for preventing winding and clogging of sewer pipe power generation device" discloses a device including an impeller box and an impeller; the impeller includes a main blade and a supporting blade, and the supporting blade is perpendicular to the main blade; the impeller box is connected to the main pipe of the sewer pipe, the impeller can be rotatably fixed to the impeller box, the rotation center axis of the impeller is perpendicular to the water flow direction, the impeller blades are located on the water flow path guided by the guide plate on the main pipe, and the distance between the rotation center axis of the impeller and the center axis of the main pipe is greater than the inner radius of the main pipe. It has the ability to prevent winding and clogging.

[0005] The device disclosed in the patent application with application number CN202211397133.8 and invention name "Water pipe power generation device and water pipe power generation system" includes: a power generation component, including a power generation end and a rotating end, the rotating end is arranged inside the water pipe, and the rotating end rotates under the drive of the water flow inside the water pipe to drive the power generation end to generate electricity; a guide member is arranged in a funnel shape on the side of the rotating end facing the water flow direction, and the first opening of the guide member away from the power generation component is larger than the second opening on the side facing the power generation component. The transmission array provided in this application is provided with a guide member in the water pipe, and the guide member concentrates the water flow of a small amount of water in the water pipe to the rotating end of the power generation component to drive the rotating end to rotate, so that the power generation end generates current and achieves stable power generation at a lower water flow rate.

[0006] The patent application with application number CN202223292467.7 and invention name "A drain pipe capable of generating electricity" discloses a drain pipe capable of generating electricity, including: an impeller drive shaft, a generator, a fixture and a guide pipe. The guide pipe is connected between the upper and lower drain pipes, and two fixtures are installed on the outer wall of the guide pipe, and bearings are arranged in the fixture. The middle section of the impeller drive shaft is located inside the guide pipe, and the two ends of the impeller drive shaft extend out of the guide pipe and pass through the bearings in the two fixtures respectively. One end of the impeller drive shaft extends out of the fixture and is connected to the generator. During operation, the water in the upper drain pipe impacts the impeller drive shaft to rotate, and the impeller drive shaft drives the generator to generate electricity.

[0007] In the existing water pipe water flow power generation technology, the impeller box structure given in the patent application with application number CN202311520349.3 can improve the power generation efficiency of the impeller, but the use of the impeller box leads to increased manufacturing complexity and space occupancy; the guide member structure given in the patent application with application number CN202211397133.8 has the disadvantages of complex structure and difficulty in installation; the guide tube given in the patent application with application number CN202223292467.7 occupies a large space and is difficult to install and use on site with limited space. In addition, in the existing diversion technology, the diversion direction of the guide plate does not change with the water flow velocity, resulting in low power generation efficiency at low flow rates.

[0008] Therefore, further improvements are made to the above problems. Summary of the invention

[0009] The main purpose of the present invention is to provide a water flow power generation system to overcome the shortcomings of existing diversion technology, such as the diversion direction does not change with the water flow velocity and the low power generation efficiency at low flow rates. It has the advantages of simple structure, high power generation efficiency and easy installation and maintenance.

[0010] In order to achieve the above objectives, the present invention provides a water flow power generation system, comprising a water pipe and a primary flow diversion module, a secondary flow diversion module and a power generation module installed on the water pipe, wherein:

[0011] The primary diversion module includes a handle, a water valve shaft and a valve member, wherein the handle is connected to the valve member through the water valve shaft, and the valve member is a ball valve including a sphere or a butterfly valve including a valve flap. The handle drives the valve member to rotate to an open state through the water valve shaft, and the water flows in the open position of the valve member (the ball valve diverts the water through the middle hole, and the butterfly valve diverts the water by opening the valve flap) to generate primary diversion;

[0012] The secondary flow guide module is located at the outlet end of the primary flow guide and comprises a flow guide vane and a flow guide vane mounting member. The flow guide vane is mounted on the water pipe through the flow guide vane mounting member. The water flow through the primary flow guide impacts the flow guide vane to generate the secondary flow guide (the combination of the two-stage flow guide improves the flexibility of the flow guide and the impact efficiency of the water flow on the impeller. The inclination angle of the flow guide vane can be changed with the change of the water flow velocity, so that the power generation impeller is subjected to a higher water flow impact force at different water flow velocities, thereby further improving the power generation efficiency);

[0013] The power generation module is located at the water outlet end of the secondary diversion and includes a power generation impeller, a power generation impeller shaft and a generator. The power generation impeller is connected to the generator through the power generation impeller shaft, and the water valve shaft is parallel to the power generation impeller shaft. Under the action of the guide vane, the off-axis water flow field generated by the secondary diversion has an asymmetric flow field distribution on both sides of the power generation impeller shaft, thereby driving the power generation impeller to rotate, and then driving the generator to generate electricity through the power generation impeller shaft.

[0014] As a further preferred technical solution of the above technical solution, a water flow channel is provided inside the water pipe;

[0015] The handle is disposed outside the water flow channel, and the water valve shaft and the valve member are both disposed inside the water flow channel;

[0016] The secondary flow guide module is built into the water flow channel;

[0017] The generator is disposed outside the water flow channel, and the power generation impeller shaft and the power generation impeller are both disposed inside the water flow channel.

[0018] As a further preferred technical solution of the above technical solution, the guide vane comprises a spine, a left wing, a right wing, a tail and a bow, wherein:

[0019] The guide plate further comprises a left wing deformation portion and a right wing deformation portion;

[0020] The left wing deformation portion establishes a connection between the spine and the left wing, and the right wing deformation portion establishes a connection between the spine and the right wing.

[0021] As a further preferred technical solution of the above technical solution, the guide vane comprises a spine, a left wing, a right wing, a tail and a bow, wherein:

[0022] The guide vane also includes a tail deformation portion, a left wing deformation portion and a right wing deformation portion, wherein:

[0023] The tail deformation portion is connected to the spine through the tail, and is used to establish a connection between the guide vane and the guide vane mounting member;

[0024] The left wing deformation portion establishes a connection between the spine and the left wing, and the right wing deformation portion establishes a connection between the spine and the right wing.

[0025] As a further preferred technical solution of the above technical solution, when the guide vane further includes a left wing deformation portion and a right wing deformation portion, the guide vane mounting member only includes a side mounting member, wherein:

[0026] The side mounting member comprises a second support ring and two side wing mounting interface members, the second support ring is mounted on the water pipe and is provided with a guide rail, one side of the first side wing mounting interface member is mounted on the left wing and the other side is mounted on the guide rail, and one side of the second side wing mounting interface member is mounted on the right wing and the other side is mounted on the guide rail; the left wing and the right wing are respectively slidably connected to the guide rails through the side wing mounting interface members, and the guide rails are used to provide mounting support and sliding guides for the side wing mounting interface members;

[0027] As a further preferred technical solution of the above technical solution, when the guide vane also includes a tail deformation portion, a left wing deformation portion and a right wing deformation portion, the guide vane mounting member only includes a tail mounting member or includes a tail mounting member and a side mounting member, wherein:

[0028] When the guide vane mounting member is installed only through the tail mounting member, the tail mounting member is connected to the tail deformation portion, and the tail mounting member is installed on the water pipe through the first support ring;

[0029] When the guide vane mounting part is installed by the tail mounting part and the side mounting part at the same time, the tail mounting part is connected to the tail deformation part, and the tail mounting part is installed on the water pipe or connected to the structural connecting part between the tail mounting part and the side mounting part through a first support ring; the side mounting part includes a second support ring and two side wing mounting interface parts, the second support ring is installed on the water pipe and the second support ring is provided with a guide rail, one side of the first side wing mounting interface part is installed on the left wing and the other side is installed on the guide rail, and one side of the second side wing mounting interface part is installed on the right wing and the other side is installed on the guide rail; the left wing and the right wing are respectively slidably connected between the side wing mounting interface parts and the guide rails, and the guide rails are used to provide installation support and sliding guidance for the side wing mounting interface parts.

[0030] As a further preferred technical solution of the above technical solution, the guide vane mounting piece is also provided with a spine reset piece, one end of which is a sliding end and the other end is a fixed end, and the sliding end of the spine reset piece is in contact with the back water surface of the spine.

[0031] As a further preferred technical solution of the above technical solution, the distance between the water valve shaft and the power generation impeller shaft is between 0.25 times and 5 times the inner diameter of the water pipe.

[0032] As a further preferred technical solution of the above technical solution, the valve member is adjusted to rotate clockwise / counterclockwise around the water valve shaft manually or electrically, and at the same time, it is detected whether the output power of the generator is greater than or equal to a preset power value, or whether the speed of the generator is greater than or equal to a preset speed value; the valve member is stopped from rotating after the output power of the generator reaches the preset power value, or the speed of the generator reaches the preset speed value.

[0033] As a further preferred technical solution of the above technical solution, the preset power value is the minimum power value required to be output by the generator; or

[0034] The maximum value of the generator output power that can be obtained by adjusting the valve opening angle within the range of greater than the valve closing angle and less than the valve full opening angle under the on-site water pressure strength limit;

[0035] The preset speed value is the generator speed value corresponding to the minimum power value required to be output by the generator; or

[0036] The maximum value of the generator speed that can be obtained by adjusting the valve opening angle within the range of greater than the valve closing angle and less than the valve full opening angle under the on-site water pressure strength limit;

[0037] The steps for determining the maximum value of the generator output power include:

[0038] The opening angle of the valve is adjusted in the direction of increasing water flow within a range of greater than the valve closing angle and less than the valve fully opening angle. When the output power of the generator has an inflection point from rising to falling, the output power at the inflection point is the maximum output power value of the generator;

[0039] The steps for determining the maximum value of the generator speed include:

[0040] The opening angle of the valve is adjusted in the direction of increasing water flow within a range greater than the valve closing angle and less than the valve full opening angle. When the generator speed has an inflection point from rising to falling, the speed at the inflection point is the maximum speed value of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic structural diagram of a guide vane of the present invention;

[0042] Figure 2 is a schematic structural diagram of a guide vane mounting member of the present invention;

[0043] Figure 3 Schematic diagram of the tail installation method of the guide vane of the present invention;

[0044] Figure 4 is a schematic diagram of a side-mounted installation method of a guide vane of the present invention;

[0045] Figure 5 It is a schematic diagram of the guide vane of the present invention being installed in both the tail installation and the side installation mode;

[0046] Figure 6 It is a schematic diagram of the secondary flow guide module and the power generation module of the present invention.

[0047] Figure 7 It is an overall schematic diagram of the present invention.

[0048] The reference numerals include: 10, guide vane; 11, spine; 12, left wing; 13, right wing; 14, tail; 15, bow; 16, tail deformation part; 17, left wing deformation part; 18, right wing deformation part; 19, axis of swing shaft; 20, guide vane mounting part; 21, tail mounting part; 22, first support ring; 23, side mounting part; 24, second support ring; 25, side wing mounting interface part; 30, spine reset part; 40, water pipe; 41, water flow channel; 50, power generation module; 51, power generation impeller shaft; 52, power generation impeller; 53, generator; 61, handle; 62, water valve shaft; 63 valve part. DETAILED DESCRIPTION

[0049] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0050] In the preferred embodiments of the present invention, those skilled in the art should note that the generator and the like involved in the present invention may be regarded as prior art.

[0051] Preferred embodiments.

[0052] In applications where a transverse rotating shaft impeller is used to obtain water flow power, the axis direction of the transverse rotating shaft impeller is perpendicular to the direction of the water flow, or in other words, the axis direction of the transverse rotating shaft impeller is perpendicular to the central axis direction of the water pipe. The advantage of this structure is that the transmission structure is simple, and the rotation of the impeller shaft can be transmitted to the generator installed on the side of the water pipe by using an impeller shaft passing through the water pipe wall. The disadvantage is that an asymmetric water flow field needs to be formed on both sides of the shaft to effectively drive the impeller to rotate. For this reason, a guide member is usually used to assist the water flow to effectively drive the impeller. The existing guide members have a fixed shape and a fixed inclination angle, and the inclination angle of the guide member cannot be adjusted as the water flow changes, which limits the potential for improving power generation efficiency.

[0053] like Figure 1-Figure 7As shown, the present invention discloses a water flow power generation system, including a water pipe 40 and a primary flow guide module, a secondary flow guide module and a power generation module 50 installed on the water pipe, wherein:

[0054] like Figure 7 As shown, the primary diversion module includes a handle 61, a water valve shaft 62 and a valve member 63. The handle 61 is connected to the valve member 63 through the water valve shaft 62. The valve member 63 is a ball valve including a sphere or a butterfly valve including a valve disc. The handle 61 drives the valve member 63 to rotate to an open state through the water valve shaft 62. When the valve member 63 is opened, the water flows downward (the ball valve diverts the water through the middle hole, and the butterfly valve diverts the water by opening the valve disc) to generate primary diversion.

[0055] The secondary flow guide module is located at the outlet end of the primary flow guide and comprises a flow guide vane 10 and a flow guide vane mounting member 20. The flow guide vane 10 is mounted on the water pipe 40 through the flow guide vane mounting member 20. The water flow passing through the primary flow guide impacts the flow guide vane 10 to generate the secondary flow guide. The combination of the two-stage flow guide improves the flexibility of the flow guide and the impact efficiency of the water flow on the power generation impeller. The inclination angle of the flow guide vane can be changed with the change of the water flow velocity, so that the power generation impeller is subjected to a higher water flow impact force at different water flow velocities, thereby further improving the power generation efficiency. In order to improve the power generation efficiency of the water flow, it is necessary to effectively convert the impact force of the water flow into the rotational torque of the power generation impeller. To this end, it is necessary to concentrate the water flow impact force on one side of the power generation impeller shaft as much as possible, and to make the water flow impact the impeller on this side as far away from the power generation impeller shaft as much as possible.

[0056] The water valve used for primary diversion has different opening angles depending on the rotation angle of the handle. For example, the opening angle of the water valve can be 15 degrees, 45 degrees and 90 degrees. At different opening angles, the main impact direction of the water flow field is different. When the installation position of the power generation impeller shaft is at a certain distance from the water outlet end of the water valve, it is impossible to achieve that the main impact direction of the water flow field output by the water valve at different opening angles can impact the effective part of the impeller. Especially at the fully opened angle of the water valve, the main impact direction of the water flow field output is the same as the direction of the central axis of the water pipe. In this case, the water flow field output by the water valve will form symmetrical impact forces on both sides of the power generation impeller shaft, resulting in a sharp decrease in the rotational torque of the power generation impeller. This is a limitation of using only water valves for primary diversion.

[0057] Using a diversion valve to perform secondary diversion on the water flow output by the water valve can overcome the disadvantage of the limited opening angle of the primary diversion of the diversion valve, and can maintain the effective impact of the water flow on the impeller at various opening angles. For example, when the opening angle of the water valve is 15 degrees, the main impact direction of the water flow field output by the water valve will reach the water pipe wall before reaching the power generation impeller and be emitted back to the other side of the power generation impeller shaft, and cannot impact the effective part of the power generation impeller. Using a guide plate located between the water outlet end of the water valve and the power generation impeller to perform secondary diversion on the water flow field output by the water valve can allow the water flow reflected by the water pipe wall to impact the effective impacted part of the power generation impeller; when the opening angle of the water valve is 45 degrees, the water flow output by the water valve is 45 degrees. The main impact direction of the field will reach the effective impact position of the power generation impeller. At this time, the guide vane located between the water outlet end of the water valve and the power generation impeller will gather the side lobe water flow outside the main impact direction of the water flow field output by the water valve to the effective impact position of the impeller to further increase the impact power on the power generation impeller; when the opening angle of the water valve is 90 degrees, the water valve is in a fully open state, and the water flow field output by the water valve will form symmetrical impact forces on both sides of the power generation impeller shaft, causing the rotational torque of the impeller to decrease sharply. At this time, the guide vane located between the water outlet end of the water valve and the impeller will guide the main impact direction of the water flow field output by the water valve to the effective impact position of the power generation impeller to maintain the impact power of the water flow on the power generation impeller.

[0058] The power generation module 50 is located at the water outlet end of the secondary diversion and includes a power generation impeller 52, a power generation impeller shaft 51 and a generator 53. The power generation impeller 52 is connected to the generator 53 through the power generation impeller shaft 51. The water valve shaft 62 is parallel to the power generation impeller shaft 51. Under the action of the guide vane 10, the off-axis water flow field generated by the secondary diversion has an asymmetric flow field distribution on both sides of the power generation impeller shaft 51, thereby driving the power generation impeller 52 to rotate, and then driving the generator 53 through the power generation impeller shaft 51 to generate electricity.

[0059] Specifically, a water flow channel 41 is provided inside the water pipe 40;

[0060] The handle 61 is disposed outside the water flow channel 41 and the water valve shaft 62 and the valve member 63 are both disposed inside the water flow channel 41;

[0061] The secondary flow guide module is built into the water flow channel 41;

[0062] The generator 52 is disposed outside the water flow channel 41 , and the power generation impeller shaft 51 and the power generation impeller 52 are both embedded in the water flow channel 41 .

[0063] More specifically, the guide vane 10 comprises a spine 11, a left wing 12, a right wing 13, a tail 14 and a bow 15, wherein:

[0064] The guide plate 10 further comprises a left wing deformation portion 17 and a right wing deformation portion 18;

[0065] The left wing deformation portion 17 establishes a (openable and closable) connection between the spine 11 and the left wing 12 , and the right wing deformation portion 18 establishes a (openable and closable) connection between the spine 11 and the right wing 13 .

[0066] More specifically, the guide vane 10 comprises a spine 11, a left wing 12, a right wing 13, a tail 14 and a bow 15, wherein:

[0067] The guide vane 10 also includes a tail deformation portion 16, a left wing deformation portion 17 and a right wing deformation portion 18, wherein:

[0068] The tail deformation portion 16 is connected to the spine 11 through the tail portion 14, and is used to establish a (tiltable) connection between the guide vane 10 and the guide vane mounting member 20;

[0069] The left wing deformation portion 17 establishes a (openable and closable) connection between the spine 11 and the left wing 12 , and the right wing deformation portion 18 establishes a (openable and closable) connection between the spine 11 and the right wing 13 .

[0070] When the impact force of the water flow increases, the left wing 12 and the right wing 13 open to both sides of the spine 11 respectively, the bow 15 swings toward the back side, the water-facing surface of the guide vane 10 decreases, and the water flow space increases;

[0071] When the impact force of the water flow decreases, the left wing 12 and the right wing 13 respectively embrace the backwater side of the spine 11, the bow 15 swings toward the frontwater side, the frontwater surface of the guide plate 10 increases, and the water flow space decreases.

[0072] The nose portion 15 of the guide vane 10 swings around an axis 19 of the swing shaft passing through the tail deformation portion 16 , and the axis around which the axis 19 of the swing shaft passing through the tail deformation portion 16 is located is parallel to the axis of the impeller shaft of the power generation impeller 52 .

[0073] The head portion 15 that is movably connected to be a guide vane swings around the tail portion 14 , and specifically, the head portion 15 swings around an axis 19 of a swing shaft that passes through the tail deformation portion 14 .

[0074] See also Figure 6 As shown, the guide vane 10 is installed in the water pipe 40 in the straight waterway on the water inlet side of the power generation impeller 52. The power generation impeller 52 drives the generator 53 installed on the cover plate through the power generation impeller shaft 51. The power generation impeller shaft 51 passes through the lateral port and the cover plate to connect the generator 53 and the power generation impeller 52. There is a flange on the lateral port of the water pipe 40, and the flange is used to install the cover plate.

[0075] The guide vane 10 changes the direction of the water flow field driving the power generation impeller in the water channel, so that one side of the power generation impeller 52 is impacted by more water flow than the other side, thereby improving the driving efficiency of the water flow on the power generation impeller.

[0076] The water pipe 40 is at least one of a section of water pipe, a tee and a water pipe joint. Figure 6 In the embodiment, the water pipe 40 is a tee with a flange.

[0077] See also Figure 6 As shown, the side port of the water pipe 40 is used to place or remove the power generation impeller 52 , and the cover plate of the side port is used as a mounting support body for the power generation impeller 52 .

[0078] Furthermore, the lateral port of the water pipe 40 is used to insert or remove the guide vane 10 and the guide vane mounting member 20 .

[0079] Specifically, the lateral port on the water pipe 40 is a lateral port of a tee piece on the water delivery pipeline; or

[0080] The lateral port on the water pipe 40 is a lateral port opened at a position on the water delivery pipeline where a guide vane and / or a power generation impeller needs to be installed.

[0081] As a specific implementation method for installing the guide vane: first, the guide vane is placed into the straight waterway of the water pipe formed by the tee through the lateral port of the tee, and then the power generation impeller is placed into the straight waterway of the tee through the lateral port of the tee.

[0082] As a specific implementation method for removing the guide vane: first, the power generation impeller is removed from the straight water channel of the tee through the lateral port of the tee to make space for removing the guide vane, and then the guide vane located in the straight water channel of the tee is removed through the lateral port of the tee.

[0083] The installation position of the guide vane does not affect the placement of the power generation impeller into the straight waterway of the tee piece, nor does it affect the removal of the power generation impeller from the straight waterway of the tee piece.

[0084] Specifically, the guide vane mounting member 20 includes at least one of a tail mounting member 21 and a side mounting member 23, wherein:

[0085] The tail mounting member 21 is located at the tail portion 14;

[0086] The side mounting member 23 is located on the back-to-water surface of the guide vane 10 (and is supported and connected to the back-to-water surface of the guide vane).

[0087] More specifically, when the guide vane 10 further includes the left wing deformation portion 17 and the right wing deformation portion 18, the guide vane mounting member 20 only includes the side mounting member 23 (such as Figure 4 ), where:

[0088] The side mounting component 23 includes a second support ring 24 and two side wing mounting interface components 25, the second support ring 24 is mounted on the water pipe 40 (the second support ring uses the inner wall of the water pipe as its mounting support body) and the second support ring 24 is provided with a guide rail, one side of the first side wing mounting interface component 25 is mounted on the left wing 12 and the other side is mounted on the guide rail, one side of the second side wing mounting interface component 25 is mounted on the right wing 13 and the other side is mounted on the guide rail; the left wing 12 and the right wing 13 are respectively slidably connected to the guide rail through the side wing mounting interface components 25, and the guide rail is used to provide mounting support and sliding guidance for the side wing mounting interface components 25.

[0089] Furthermore, when the guide vane 10 also includes the tail deformation portion 16, the left wing deformation portion 17 and the right wing deformation portion 18, the guide vane mounting member 20 only includes the tail mounting member 21 or includes the tail mounting member 21 and the side mounting member 23, wherein:

[0090] When the guide vane mounting member 20 is used to mount the guide vane 10 only through the tail mounting member 21, the tail mounting member 21 is connected to the tail deformation portion 16 (through the tail), and the tail mounting member 21 is mounted on the water pipe 40 through the first support ring 22 (the first support ring uses the inner wall of the water pipe as its mounting support body, such as Figure 3 shown);

[0091] like Figure 5 As shown, when the guide vane mounting member 20 is used to mount the guide vane 10 through the tail mounting member 21 and the side mounting member 23 at the same time, the tail mounting member 21 is connected to the tail deformation portion 16 (through the tail), and the tail mounting member 21 is mounted on the water pipe 40 through the first support ring 22 (the first support ring uses the inner wall of the water pipe as its mounting support body, as shown in FIG. Figure 3 or the structural connector between the tail mounting member 21 and the side mounting member 23 is connected (as shown in Figure 2 As shown); the side mounting member 23 includes a second support ring 24 and two side wing mounting interface members 25, the second support ring 24 is mounted on the water pipe 40 (the second support ring uses the inner wall of the water pipe as its mounting support body) and the second support ring 24 is provided with a guide rail, one side of the first side wing mounting interface member 25 is mounted on the left wing 12 and the other side is mounted on the guide rail, one side of the second side wing mounting interface member 25 is mounted on the right wing 13 and the other side is mounted on the guide rail; the left wing 12 and the right wing 13 are respectively slidably connected with the guide rails through the side wing mounting interface members 25, and the guide rails are used to provide mounting support and sliding guidance for the side wing mounting interface members 25.

[0092] Specifically, the main body of the first / second support ring is a closed-loop "O"-shaped structure or an open-loop "C"-shaped structure;

[0093] Specifically, the first / second support ring and the water pipe are fixed in the following manner: the support ring is fixed to the inner wall of the water pipe by means of a clamping connection or an outer diameter expansion and extrusion connection.

[0094] Furthermore, the guide vane mounting member 20 is further provided with a back restoring member 30, one end of the back restoring member 30 is a sliding end and the other end is a fixed end, and the sliding end of the back restoring member 30 is in contact with the back surface of the back 11 (when there is a side mounting member, the fixed end of the back restoring member is connected to the side mounting member through a structural member, such as Figure 2 As shown; when there is no side mounting member, the fixed end of the spine reset member is connected to the cavity wall of the water pipe through a structural member; when the spine swings, the sliding end of the spine reset member that is attached to the back water surface of the spine slides on the back water surface of the spine).

[0095] Preferably, the tail deformation part 16 is used to realize the variable inclination angle of the spine, and comprises any one of an elastic sheet, a torsion spring and a hinge component, and the spine realizes a tiltable connection with the tail mounting part through the tail deformation part;

[0096] There is a fixed connection or an integrated connection between the tail deformation portion 16 and the spine 11 .

[0097] The tail deformation portion 16 and the spine 11 are fixedly connected by welding, riveting, clamping or screwing.

[0098] The integrated connection is to integrate the tail deformation portion 16 and the spine 11 into one.

[0099] The connection between the tail deformation portion 16 included in the guide plate 10 and the tail mounting member 21 is any one of connection using mounting screw holes, welding, riveting or clamping.

[0100] Preferably, the left wing deformation part 17 and the right wing deformation part 18 are used to realize the variable inclination angle of the spine 11, and respectively include at least one of an elastic sheet, a torsion spring and a hinge component.

[0101] A specific manufacturing method of the left wing deformation part 17 and the right wing deformation part 18 is to use an elastic sheet and a guide vane to make them as one piece. For example, an elastic stainless steel sheet is used as the skin of the guide vane. The elastic stainless steel sheet at the connection between the left wing deformation part and the right wing deformation part and the spine can play the role of the left wing deformation part and the right wing deformation part.

[0102] When the impact force of the water flow decreases, the left wing 12 and the right wing 13 respectively hug the back side of the spine 11, and the bow of the spine 11 swings toward its front side. When the impact force of the water flow decreases, the bow 15 swings toward the front side, and the spine 11 swings. The spine 11 pulls the left wing 12 and the right wing 13 elastically connected to it to hug the back side of the spine 11. In the process of hugging the left wing 12 and the right wing 13 to the back side of the spine, their flaps slide against the water pipe wall;

[0103] When the spine 11 included in the guide vane swings toward its back side under the action of water pressure, the flaps of the left wing 12 and the right wing 13 are pushed to unfold to the left and right sides of the spine 11 respectively under the guidance of the guide rails included in the side mounting parts 23.

[0104] When the impact force of the water flow increases, the head 15 of the back 11 swings around the tail deformation part 16 toward the back water side under the action of the water flow impact force, the water-facing surface of the guide plate 10 is reduced, the water flow space is increased, and the power generation efficiency is improved; when the impact force of the water flow increases, the head 15 swings toward the back water side, the back 11 swings, and the back 11 squeezes the left wing 12 and the right wing 13 elastically connected thereto to open to both sides of the back 11, and during the process of the left wing 12 and the right wing 13 opening to both sides of the back, the flaps slide against the water pipe wall;

[0105] When the impact force of the water flow decreases, the spine 11 swings toward the water-facing side around the tail deformation part under the action of the spine reset part 30, the water-facing surface of the guide vane 10 increases, and the water flow space decreases, resulting in an increase in the water flow velocity. The power generation impeller 52 is subjected to a greater impact force or impact torque, thereby improving the power generation efficiency.

[0106] Preferably, the distance between the water valve rotating shaft 62 and the power generation impeller shaft 51 is between 0.25 times and 5 times the inner diameter of the water pipe 40 .

[0107] Preferably, the valve member 63 is adjusted manually or electrically to rotate around the water valve shaft 62 in a clockwise / counterclockwise direction, and at the same time, it is detected whether the output power of the generator 53 is greater than or equal to a preset power value, or whether the rotation speed of the generator 53 is greater than or equal to a preset speed value; the valve member is stopped from rotating after the output power of the generator 53 reaches the preset power value, or the rotation speed of the generator 53 reaches the preset speed value.

[0108] Preferably, the preset power value is the minimum power value required to be output by the generator; or

[0109] The maximum value of the generator output power that can be obtained by adjusting the valve opening angle within the range of greater than the valve closing angle and less than the valve full opening angle under the on-site water pressure strength limit;

[0110] The preset speed value is the generator speed value corresponding to the minimum power value required to be output by the generator; or

[0111] The maximum value of the generator speed that can be obtained by adjusting the valve opening angle within the range of greater than the valve closing angle and less than the valve full opening angle under the on-site water pressure strength limit;

[0112] The steps for determining the maximum value of the generator output power include:

[0113] The opening angle of the valve is adjusted in the direction of increasing water flow within a range of greater than the valve closing angle and less than the valve fully opening angle. When the output power of the generator has an inflection point from rising to falling, the output power at the inflection point is the maximum output power value of the generator;

[0114] The steps for determining the maximum value of the generator speed include:

[0115] The opening angle of the valve is adjusted in the direction of increasing water flow within a range greater than the valve closing angle and less than the valve full opening angle. When the generator speed has an inflection point from rising to falling, the speed at the inflection point is the maximum speed value of the generator.

[0116] It is worth mentioning that the technical features such as the generator involved in the patent application of this invention should be regarded as the prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field, and should not be regarded as the inventive point of the patent of this invention. The patent of this invention will not be further elaborated.

[0117] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water flow power generation system, characterized in that: It comprises a water pipe and a primary flow guide module, a secondary flow guide module and a power generation module installed on the water pipe, wherein: The primary diversion module includes a handle, a water valve shaft and a valve member, wherein the handle is connected to the valve member through the water valve shaft, the valve member is a ball valve including a ball or a butterfly valve including a valve disc, and the handle drives the valve member to rotate to an open state through the water valve shaft, and the water flow generates a primary diversion under the adjustment of the valve member being opened; The secondary diversion module is located at the water outlet of the primary diversion and comprises a diversion plate and a diversion plate mounting member, wherein the diversion plate is mounted on the water pipe through the diversion plate mounting member, and the water flow passing through the primary diversion impacts the diversion plate to generate the secondary diversion; The power generation module is located at the water outlet end of the secondary diversion and includes a power generation impeller, a power generation impeller shaft and a generator. The power generation impeller is connected to the generator through the power generation impeller shaft, and the water valve shaft is parallel to the power generation impeller shaft. Under the action of the guide vane, the off-axis water flow field generated by the secondary diversion has an asymmetric flow field distribution on both sides of the power generation impeller shaft, thereby driving the power generation impeller to rotate, and then driving the generator to generate electricity through the power generation impeller shaft.

2. A water flow power generation system according to claim 1, characterized in that: A water flow channel is provided inside the water pipe; The handle is disposed outside the water flow channel, and the water valve shaft and the valve member are both disposed inside the water flow channel; The secondary flow guide module is built into the water flow channel; The generator is disposed outside the water flow channel, and the power generation impeller shaft and the power generation impeller are both disposed inside the water flow channel.

3. A water flow power generation system according to claim 2, characterized in that: The guide vane comprises a spine, a left wing, a right wing, a tail and a bow, wherein: The guide plate further comprises a left wing deformation portion and a right wing deformation portion; The left wing deformation portion establishes a connection between the spine and the left wing, and the right wing deformation portion establishes a connection between the spine and the right wing.

4. A water flow power generation system according to claim 2, characterized in that: The guide vane comprises a spine, a left wing, a right wing, a tail and a bow, wherein: The guide vane also includes a tail deformation portion, a left wing deformation portion and a right wing deformation portion, wherein: The tail deformation portion is connected to the spine through the tail, and is used to establish a connection between the guide vane and the guide vane mounting member; The left wing deformation portion establishes a connection between the spine and the left wing, and the right wing deformation portion establishes a connection between the spine and the right wing.

5. A water flow power generation system according to claim 3, characterized in that: When the guide vane further comprises a left wing deformation portion and a right wing deformation portion, the guide vane mounting member only comprises a side mounting member, wherein: The side mounting component includes a second supporting ring and two side wing mounting interface components, the second supporting ring is mounted on the water pipe and is provided with a guide rail, one side of the first side wing mounting interface component is mounted on the left wing and the other side is mounted on the guide rail, one side of the second side wing mounting interface component is mounted on the right wing and the other side is mounted on the guide rail; the left wing and the right wing are respectively slidably connected to the guide rails through the side wing mounting interface components, and the guide rails are used to provide mounting support and sliding guidance for the side wing mounting interface components.

6. A water flow power generation system according to claim 4, characterized in that: When the guide vane also includes a tail deformation portion, a left wing deformation portion and a right wing deformation portion, the guide vane mounting member only includes a tail mounting member or includes a tail mounting member and a side mounting member, wherein: When the guide vane mounting member is installed only through the tail mounting member, the tail mounting member is connected to the tail deformation portion, and the tail mounting member is installed on the water pipe through the first support ring; When the guide vane mounting part is installed by the tail mounting part and the side mounting part at the same time, the tail mounting part is connected to the tail deformation part, and the tail mounting part is installed on the water pipe or connected to the structural connecting part between the tail mounting part and the side mounting part through a first support ring; the side mounting part includes a second support ring and two side wing mounting interface parts, the second support ring is installed on the water pipe and the second support ring is provided with a guide rail, one side of the first side wing mounting interface part is installed on the left wing and the other side is installed on the guide rail, and one side of the second side wing mounting interface part is installed on the right wing and the other side is installed on the guide rail; the left wing and the right wing are respectively slidably connected between the side wing mounting interface parts and the guide rails, and the guide rails are used to provide installation support and sliding guidance for the side wing mounting interface parts.

7. A water flow power generation system according to any one of claims 5-6, characterized in that: The guide plate mounting piece is also provided with a spine restoring piece, one end of which is a sliding end and the other end is a fixed end, and the sliding end of the spine restoring piece is in contact with the back surface of the spine.

8. A water flow power generation system according to claim 2, characterized in that: The distance between the water valve rotating shaft and the power generation impeller shaft is between 0.25 times and 5 times the inner diameter of the water pipe.

9. A water flow power generation system according to claim 1, characterized in that: Manually or electrically adjust the valve to rotate around the water valve shaft in a clockwise / counterclockwise direction, and at the same time detect whether the output power of the generator is greater than or equal to a preset power value, or detect whether the speed of the generator is greater than or equal to a preset speed value; When the output power of the generator reaches a preset power value, or the rotation speed of the generator reaches a preset rotation speed value, the valve member stops rotating.

10. A water flow power generation system according to claim 9, characterized in that: The preset power value is the minimum power value required to be output by the generator; or The maximum value of the generator output power that can be obtained by adjusting the valve opening angle within the range of greater than the valve closing angle and less than the valve full opening angle under the on-site water pressure strength limit; The preset speed value is the generator speed value corresponding to the minimum power value required to be output by the generator; or The maximum value of the generator speed that can be obtained by adjusting the valve opening angle within the range of greater than the valve closing angle and less than the valve full opening angle under the on-site water pressure strength limit; The steps for determining the maximum value of the generator output power include: The opening angle of the valve is adjusted in the direction of increasing water flow within a range of greater than the valve closing angle and less than the valve fully opening angle. When the output power of the generator has an inflection point from rising to falling, the output power at the inflection point is the maximum output power value of the generator; The steps for determining the maximum value of the generator speed include: The opening angle of the valve is adjusted in the direction of increasing water flow within a range greater than the valve closing angle and less than the valve full opening angle. When the generator speed has an inflection point from rising to falling, the speed at the inflection point is the maximum speed value of the generator.

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