A vertical pipe hydraulic power generation device and a water meter to which it is applied

Abstract

The present invention relates to the technical field of hydropower generation, and particularly relates to a vertical pipe hydropower generation device and a water meter applied thereto, including a telescopic component, a transmission component, and an impeller component with variable diameter; an output shaft of the impeller component is drivingly connected to a generator; along the axial direction of the impeller component, a plurality of obliquely grooved slots are provided on the impeller component; the transmission component is slidably clamped in the plurality of obliquely grooved slots, and the transmission component is fixedly connected to the telescopic end of the telescopic component; the telescopic component is used to expand and contract according to the magnitude of the water flow, and the expansion and contraction of the telescopic component is used to drive the transmission component to move back and forth in the obliquely grooved slots, and the back and forth movement of the transmission component in the obliquely grooved slots is used to control the contraction or expansion of the impeller component. When applied, the expansion or contraction of the impeller component can be adjusted according to the magnitude of the water flow velocity, so as to maintain the stability of the power generation power, and power supply can be completed without repeatedly replacing the additional power distribution of the water meter.

Description

Technical Field

[0001] The present invention relates to the technical field of hydropower generation, and particularly relates to a vertical pipeline hydropower generation device and a water meter applied thereto. Background Art

[0002] As an emerging electronic product, an intelligent water meter can not only realize remote automatic meter reading, solve the drawbacks of traditional water meters, but also has functions such as data remote transmission communication, prepayment, and valve control, which provides great convenience for the water supply management of water companies. However, most current intelligent water meters use batteries as the only energy source, and this power supply scheme has many disadvantages, such as limited battery capacity and limited battery life. Once the chemical battery is damaged and leaks, it will cause serious water pollution problems.

[0003] Currently, the batteries of intelligent water meters need to be replaced on average every two to three years. Replacing batteries is an operation that consumes a huge amount of manpower and financial resources. It is unacceptable to frequently replace the batteries of intelligent water meters for each household. Therefore, a device that can generate electricity for intelligent water meters in the pipeline has emerged as the times require.

[0004] However, the existing self - generating devices cannot adjust the power output of the generating device according to the change of water flow velocity. For example, when the impeller is driven by slow water flow, the output power generation is relatively low, or when the impeller is in high - speed water flow, the output power generation is relatively high. That is, the instability of the water flow velocity in the current technology will lead to the instability of the power output of the generating device, seriously threatening the stability of the generating device.

[0005] Therefore, it is of great significance to study a device that can output stable power generation according to the change of water flow velocity. Summary of the Invention

[0006] The purpose of the present invention is to provide a vertical pipeline hydropower generation device with self - adaptive variable diameter and a water meter applied thereto, so as to solve the problem that the existing pipeline hydropower generation device cannot stabilize its output power under the condition of changing water flow velocity. To solve the above - mentioned technical problems, the technical solution of this application is as follows:

[0007] In a first aspect, the present application provides a vertical pipe hydraulic power generation device with an adaptable variable diameter, including a telescopic component, a transmission component, and an impeller component with a variable diameter; an output shaft of the impeller component is drivingly connected to a generator; along the axial direction of the impeller component, a plurality of obliquely slotted openings are provided on the impeller component; the transmission component is slidably engaged in the plurality of obliquely slotted openings, and the transmission component is fixedly connected to a telescopic end of the telescopic component; the telescopic component is configured to telescope according to the magnitude of the water flow, and the telescoping of the telescopic component is used to drive the transmission component to reciprocate within the obliquely slotted openings, and the reciprocating movement of the transmission component within the obliquely slotted openings is used to control the contraction or expansion of the impeller component. In application, the expansion or contraction of the impeller component can be adjusted according to the magnitude of the water flow velocity to maintain the stability of the power generation power.

[0008] In a possible implementation of the above first aspect, when the water flow velocity is greater than a preset value of the telescopic component, the transmission component moves in the obliquely slotted openings in a direction away from the impeller component to trigger the contraction of the impeller component; when the water flow velocity is less than the preset value of the telescopic component, the transmission component moves in the obliquely slotted openings in a direction adjacent to the impeller component to trigger the expansion of the impeller component. In application, the obliquely slotted openings only need to be inclined counterclockwise to control the contraction of the impeller part when moving upward and control the expansion of the impeller part when moving downward.

[0009] In a possible implementation of the above first aspect, the transmission component includes a connecting piece and a transmission piece; the connecting piece is fixedly connected to a telescopic end of the telescopic component, and the connecting piece is slidably connected to the transmission piece; the transmission piece is slidably engaged in the plurality of obliquely slotted openings. The transmission component controlled by the telescopic component can move up and down in the obliquely slotted openings to achieve the control of the expansion and contraction of the impeller, thereby completing the adaptive adjustment of the impeller diameter.

[0010] In a possible implementation of the above first aspect, the telescopic component includes a piston, a housing, and a telescopic member; water inlet holes and water intake holes are respectively provided at two ends of the housing; the piston is clamped at one end of the housing adjacent to the water intake hole, and the piston is slidably connected to the housing. The connecting piece passes through the water inlet hole and is fixedly connected to the piston; the telescopic member is disposed between the housing and the piston. By comparing the preset elastic force of the telescopic member with the pressure of the water flow acting on the telescopic component, if the pressure of the water flow is greater than the preset value, the water flow will press the piston to move upward through the water intake hole, thereby controlling the upward movement of the transmission component, and further controlling the contraction of the impeller part. Similarly, if the pressure of the water flow is less than the preset value, the piston will move downward, thereby controlling the downward movement of the transmission component, and further controlling the expansion of the impeller part.

[0011] In a possible implementation of the first aspect described above, the housing includes an inner housing and an outer housing disposed on the same axis; a water inlet hole is provided at the end of the inner housing, and a component inlet hole is provided at the end of the outer housing; the inner housing is rotatably connected to the outer housing, and the telescopic member is disposed between the inner housing and the outer housing. The inner housing and the outer housing can clamp the telescopic member to make the telescopic member in a compressed or extended state to reach the required preset value.

[0012] In a possible implementation of the first aspect described above, the transmission member includes a transmission plate, a plurality of transmission rods, and a plurality of transmission sliders; the transmission plate is slidably connected to the connecting member, the transmission plate is fixedly connected to the plurality of transmission rods, and the plurality of transmission rods are respectively fixedly connected to the plurality of transmission sliders; the plurality of transmission sliders are respectively slidably engaged in the plurality of obliquely grooved slots. By the movement of the transmission sliders in the obliquely grooved slots, the impeller clamping member will rotate clockwise or counterclockwise relative to the impeller member. At the same time, the rotating impeller member component will control the impeller member to contract or expand.

[0013] In a possible implementation of the first aspect described above, the obliquely grooved slot is composed of a first arc-shaped groove body and a second arc-shaped groove body; the centripetal direction of the first arc-shaped groove body is arranged in the opposite direction to the centripetal direction of the second arc-shaped groove body, which can reduce the friction of the transmission member and improve the smoothness of the transmission.

[0014] In a possible implementation of the first aspect described above, the connecting member includes a connecting rod and two clamping brackets; the connecting rod is fixedly connected to the piston, and the connecting rod is fixedly connected to both of the two clamping brackets; the transmission plate is disposed between the two clamping brackets, and both of the two clamping brackets are slidably connected to the transmission plate, realizing the clamping of the transmission member and realizing the rotation of the transmission member on the connecting member.

[0015] In a possible implementation of the first aspect described above, the clamping bracket is an arc-shaped strip plate, and clamping sliding balls are provided at both ends of the arc-shaped strip plate. The clamping sliding balls are disposed on the surface adjacent to the transmission plate, and the clamping sliding balls are slidably connected to the transmission plate. The setting of the clamping sliding balls makes the friction between the clamping bracket and the transmission member smaller.

[0016] In a possible implementation of the first aspect described above, the impeller component includes an impeller clamping member and an impeller member with a variable diameter; the impeller member is rotatably clamped in the impeller clamping member; along the axial direction of the impeller component, a plurality of the obliquely grooved slots are provided on the impeller clamping member. The rotation of the impeller clamping member is used to drive the impeller member to rotate for extension or contraction. The impeller member contracts or expands under the drive of the impeller clamping member to realize the adjustable and variable diameter.

[0017] In a possible implementation of the above first aspect, the impeller member includes a plurality of blades and two oppositely arranged impeller plates; the impeller clamping member includes two oppositely arranged impeller clamping plates; a plurality of first through slots are provided in the diameter direction of the two impeller plates; a plurality of second through slots are provided in the diameter direction of the two impeller clamping plates; the plurality of first through slots are respectively aligned with the plurality of second through slots, the blades are slidably clamped on the first through slots, the blades are slidably connected to the second through slots, the second through slots are used to control the stroke of the blades in the first through slots, and the second through slots of the impeller clamping member rotate clockwise or counterclockwise under the drive of the transmission member. During this rotation process, the movement of the second through slots will drive the blades to move, thereby controlling the stroke of the blades in the first through slots, and finally realizing the variable adjustability of the diameter of the impeller member.

[0018] In a possible implementation of the above first aspect, the impeller member further includes an output shaft; the two impeller plates are fixedly connected through the output shaft, and both ends of the output shaft respectively pass through the two impeller plates; the blades are arranged between the two impeller plates, and both ends of the blades are slidably clamped on the first through slots of different impeller plates. The blades drive the output shaft and the impeller plates to rotate, and the output shaft transmits mechanical energy into the generator to realize the conversion of electrical energy and finally complete power generation.

[0019] In a possible implementation of the above first aspect, the impeller clamping member includes a sleeve and an impeller support rod; the two impeller clamping plates are fixedly connected through the impeller support rod; the sleeve is fixedly connected to the impeller clamping plate away from the blades, the sleeve is sleeved outside the output shaft, and a plurality of the oblique slots are provided on the outer wall of the sleeve; the impeller member is arranged between the two impeller clamping plates, and both ends of the impeller member are slidably connected to the second through slots of different impeller clamping plates. When the impeller rotates, it drives the impeller clamping member and the transmission member to rotate synchronously.

[0020] In a possible implementation of the above first aspect, the first through slot is an arc-shaped through slot, and the second through slot is a straight through slot. By the cooperation of the two through slots with different shapes, the stroke of the blade in the first through slot is controlled, thereby realizing the contraction or expansion of the impeller.

[0021] In a second aspect, the present application provides a pipeline water meter applying a vertical pipeline hydraulic power generation device, which includes a pipeline, an energy management module, a water meter, a deflector plate, and a vertical pipeline hydraulic power generation device. The deflector plate and the vertical pipeline hydraulic power generation device are both arranged in the pipeline; the output shaft of the vertical pipeline hydraulic power generation device is arranged perpendicular to the water flow direction, the water meter is connected to the vertical pipeline hydraulic power generation device, and the vertical pipeline hydraulic power generation device is electrically connected to the water meter through the energy management module; along the water flow direction, the deflector plate is aligned with the vertical pipeline hydraulic power generation device. During application, the pipeline water meter is directly connected to a household water supply pipe, and the detection of water consumption can be realized. Moreover, the water meter does not require additional power distribution, and the applied vertical pipeline hydraulic power generation device can supply power to it.

[0022] The beneficial effects of the present invention are as follows:

[0023] Since there are multiple obliquely slotted openings on the impeller component along the axial direction of the output shaft; the transmission component is slidably clamped in the multiple obliquely slotted openings, and the transmission component is fixedly connected to the telescopic end of the telescopic component. Therefore, during application, the preset elastic force of the telescopic member is compared with the pressure of the water flow acting on the telescopic component. When the pressure of the water flow on the telescopic component is greater than the telescopic force of the telescopic component, the telescopic component contracts upward, driving the transmission component to move in the obliquely slotted opening and driving the impeller component to rotate and contract, so as to reduce the contact area between the impeller and the water flow, reduce the output power to maintain the preset output power; when the water flow pressure is less than the telescopic force of the telescopic component, the telescopic component contracts downward, driving the transmission component to move in the obliquely slotted opening and driving the impeller component to rotate and expand, so as to increase the contact area between the impeller and the water flow, increase the output power to maintain the preset output power, and finally realize the stability of the output power of the power generation device under different water flow rates.

[0024] Moreover, since the hydraulic power generation device and the pipeline water meter applied do not require electronic components such as sensors and drive motors to participate, the overall device has a simple structure, a small volume, a small installation space requirement, and a simple assembly structure, and can be applied to occasions with narrow spaces such as urban underground water supply pipe networks and household water supply pipes.

[0025] Furthermore, due to the vertical arrangement mode of the hydraulic power generation device, compared with the horizontal arrangement mode, it can effectively reduce the incoming flow conditions required for the impeller to start, enabling the power generation device to work and generate electricity in occasions where the incoming flow velocity is relatively small, such as in water supply pipes.

[0026] In summary, due to the cooperation of the telescopic component, the transmission component, and the variable-diameter impeller component, the power generation device can adaptively adjust the output power of the power generation device according to the water flow change to maintain a stable power generation power, thereby protecting the power generation device. Description of the Drawings

[0027] To more clearly illustrate the technical solution of the present invention, the accompanying drawings required for the implementation will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic cross-sectional view of the overall structure of the impeller component in the deployed state provided by the preferred embodiment of the present invention;

[0029] Figure 2 It is a schematic cross-sectional view of the overall structure of the impeller component in the contracted state provided by the preferred embodiment of the present invention;

[0030] Figure 3 It is a schematic view of the overall structure provided by the preferred embodiment of the present invention;

[0031] Figure 4 It is a schematic view of the structure of the impeller clamp provided by the preferred embodiment of the present invention;

[0032] Figure 5 It is a schematic view of the structure of the impeller provided by the preferred embodiment of the present invention;

[0033] Figure 6 It is a partial schematic view of the structure of the telescopic component and the transmission component provided by the preferred embodiment of the present invention;

[0034] Figure 7 It is a comparison diagram of the simulation results of the torque M received by the impellers in different diameter states under the same working conditions provided by the preferred embodiment of the present invention;

[0035] Figure 8 It is a flow chart of the adaptive strategy provided by the preferred embodiment of the present invention.

[0036] Figure 9 It is a schematic diagram of the energy supply strategy provided by the preferred embodiment of the present invention.

[0037] The reference numerals are as follows:

[0038] 1. Telescopic component; 10. Housing; 100. Inner housing; 1000. First limit stop; 101. Outer housing; 1010. Second limit stop; 11. Piston; 12. Telescopic member;

[0039] 2. Transmission component; 20. Connecting member; 200. Connecting rod; 201. Clamping frame; 202. Clamping sliding ball; 21. Transmission member; 210. Transmission plate; 211. Transmission rod; 212. Transmission slider;

[0040] 3. Impeller component; 30. Impeller clamping part; 300. Sleeve; 3000. Oblique slot; 301. Impeller support rod; 302. Impeller clamping plate; 3020. Second through slot; 31. Impeller part; 310. Output shaft; 311. Blade; 3110. First slider; 3111. Second slider; 312. Impeller plate; 3120. First through slot;

[0041] 4. Generator; 5. Coupling; 6. Pipeline; 7. Deflector; 8. Motor support; 9. Flange; 10a. Flip cover; 11a. Energy management module; 12a. Water meter. Detailed implementation manner

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] The pipeline type power generation device is a device that specifically uses the water in the pipeline for power generation. Its power generation part is located in the pipeline, and the water flow in the pipeline is used for hydraulic power generation. The obtained electric energy is supplied to the water meter to avoid the situation that the existing water meter needs to be frequently replaced due to battery problems.

[0044] However, the existing pipeline type power generation devices have problems that they cannot flexibly adapt to the change of the fluid flow rate in the pipeline and it is difficult to ensure the safe and stable operation of the hydraulic power generation device. Specifically, when the water flow velocity is relatively fast, the impeller power generation device with a constant diameter will drive a relatively high power generation under the drive of the water flow. When the water flow velocity is relatively slow, the impeller power generation device with a constant diameter will drive a relatively low power generation under the drive of the water flow. However, this instability of the water flow velocity will cause great fluctuations in the power output of the power generation system, thus seriously threatening the stability of the power system.

[0045] To solve the above problems, please refer to Figures 1 to 9 , this application provides a vertically pipeline hydraulic power generation device with an adaptable variable diameter, including a generator 4, a telescopic component 1, a transmission component 2 and an impeller component 3 with a variable diameter. The core idea is to use the telescopic component 1 that can be telescoped up and down according to the water flow velocity, so as to drive the transmission component 2 to move back and forth in the oblique slot 3000 of the impeller component 3, and then drive the rotation and telescoping or rotation and unfolding of the impeller component 3. After this process, the diameter of the impeller component 3 is adjusted, and the output power of the generator 4 is also controlled. Finally, the purpose of adjusting the power generation power according to the water flow velocity is achieved to maintain a stable power generation power. Specifically, the following will be described with preferred embodiments.

[0046] In the vertically pipeline hydraulic power generation device of this application, regarding the above-mentioned telescopic component 1, please refer to Figure 1 , Figure 2 and Figure 6, the telescopic member 1 includes a housing 10, a piston 11, and a telescopic member 12 disposed on the same vertical axis; a water inlet hole is provided at the bottom end of the housing 10, and a piston 11 is clamped at one end of the housing 10 adjacent to the water inlet hole (i.e., the bottom end of the housing 10), and the outer wall of the piston is slidably connected to the inner wall of the housing 10; a member inlet hole is provided at the top end of the housing 10, and the transmission member 2 passes through the member inlet hole into the housing 10 and is fixedly connected to the piston 11; the telescopic member 12 is disposed between the housing 10 and the piston 11. After adopting this setting method, water flows into the telescopic member 1 through the water inlet hole to act on the piston 11. Whether the pressure of the water flow is greater than or less than the preset elastic force of the telescopic member 12, the water flow will cause the telescopic member 12 to move up and down in the housing 10, thereby driving the contraction or expansion of the impeller member 3, and then controlling the power of stable power generation.

[0047] It should be noted that when the flow rate of the fluid in the pipeline increases, the pressure acting on the bottom surface of the piston 11 will also increase. Similarly, when the flow rate of the fluid in the pipeline begins to decrease, the pressure acting on the bottom surface of the piston 11 will also decrease. If the preset telescopic force of the telescopic member 12 is greater than the pressure of the water flow, it will drive the piston 11 to move downward, and vice versa, it will drive the piston 11 to move upward.

[0048] Specifically, the principle of the increase in the pressure on the bottom surface of the piston due to the increase in the flow rate of the fluid in the pipeline is that the water supply company will temporarily increase the water supply pressure during peak water use periods to maintain normal water supply, and will turn off the pressurization equipment during low water use periods to prevent water leakage and damage to pipeline facilities. This means that there is additional energy input in the water pipeline system throughout the day to maintain normal water supply. The use of Bernoulli's equation must satisfy ① the flow is a steady flow ② outside the boundary layer where viscosity can be ignored. In the present invention, due to the rotation of the water turbine impeller, the flow field in the water turbine section and the subsequent section changes with time and belongs to unsteady flow. Even after idealization and time averaging, it is approximately a steady flow, but since the bottom surface of the piston is a solid wall, within the near-wall boundary layer, the viscous effect dominates and viscosity cannot be ignored. Therefore, the unmodified total flow Bernoulli equation cannot be used to explain.

[0049] Therefore, in the water supply pipeline, the more water used means that the water consumption Q passing through the pipeline per unit time is greater, that is, the flow velocity V of the water flow in the pipe is greater (the formula is V = Q / S, where S is the cross-sectional area of the pipeline). Also, from the formula F d = 0.5ρC d AV 2 it can be known that (in the formula, F d is the resistance received by the object, ρ is the density of water, C d is the resistance coefficient, V is the oncoming flow velocity of the fluid flowing through the object, and A is the cross-sectional area of the object perpendicular to the oncoming flow direction). When the flow velocity V increases, the force F acting on the bottom surface of the piston dIt will also increase. Therefore, when the fluid flow rate V increases, the force acting on the piston bottom surface will increase.

[0050] In some possible embodiments, the telescopic member 1 is replaced by an electronic pressure gauge or an electronic flowmeter, and the linear lead screw motion slide table group is replaced. However, although this replacement scheme is more flexible and can achieve precise control of the impeller diameter, it has a large volume, a complex structure, a high manufacturing cost, and an additional power loss.

[0051] For the housing 10, as Figure 6 shown, the housing 10 includes an inner housing 100 and an outer housing 101 disposed on the same axis. The inner housing 100 is placed at the bottom, and the outer housing 101 is placed at the top. The bottom of the inner housing 100 is provided with a water inlet hole, the top of the outer housing 101 is provided with a component inlet hole, and the inner top of the outer housing 101 is provided with a second limit stop 1010 to limit the excessive contraction of the telescopic member 12. The inner housing 100 is rotatably connected to the outer housing 101. The telescopic member 12 is fixedly disposed between the inner housing 100 and the outer housing 101. The piston 11 is disposed between the telescopic member 12 and the inner housing 100. The bottom of the inner housing 100 is provided with a first limit stop 1000 to limit the piston 11 from disengaging from the housing 10. After adopting this setting method, the telescopic value of the telescopic member 12 can be preset by the inner housing 100 and the outer housing 101. When the telescopic member 1 needs a larger preset telescopic value, the inner housing 100 and the outer housing 101 can be controlled to rotate closer to each other to increase the telescopic situation of the telescopic member 12, thereby increasing the preset telescopic value. Similarly, if a smaller telescopic value is required, it can also be achieved by rotating in the opposite direction, which will not be elaborated here.

[0052] In some possible embodiments, the telescopic member 12 abuts against the inner wall of the ends of the inner housing 100 and the outer housing 101, rather than being fixedly connected.

[0053] For the telescopic member 12, the telescopic member 12 is preferably a compression spring, and other components that can move up and down or expand and contract according to the preset value can be used. Those skilled in the art can choose according to their actual needs.

[0054] In the first embodiment of the present application, regarding the above-mentioned transmission member 2, please refer to Figure 1 、 Figure 2 and Figure 6 , the transmission member 2 includes a connecting member 20 and a transmission member 21. The connecting member 20 is fixedly connected to the telescopic end of the telescopic member 1, and the connecting member 20 is slidably connected to the transmission member 21; the transmission member 21 is slidably engaged in the oblique slots 3000 of a plurality of impeller members 3. After adopting this setting method, the connecting member 20 will move up or down under the drive of the telescopic member 1, thereby driving the transmission member 21 to move up or down in the oblique slots 3000, and further driving the impeller member 3 to rotate clockwise or counterclockwise, realizing the rotational contraction or expansion of the impeller member 3.

[0055] For the connecting member 20, as Figure 6 shown, the connecting member 20 includes a connecting rod 200 and two clamping brackets 201. One end of the connecting rod 200 is fixedly connected to the piston 11, and the other end of the connecting rod 200 is fixedly connected to both of the two clamping brackets 201. A transmission member 21 is disposed between the two clamping brackets 201, and both of the two clamping brackets 201 are slidably connected to the transmission member 21. After adopting this setting method, the two clamping brackets 201 can clamp and fix the transmission member 21, and can realize the rotation of the transmission member 21 within the two clamping brackets 201.

[0056] Among them, the connecting rod 200 is a vertically arranged rod fixedly connected to a seven-shaped rod. The vertical rod is vertically arranged and fixedly connected to the piston 11, and the seven-shaped rod is fixedly connected to the two clamping brackets 201; both of the two clamping brackets 201 are arc-shaped strip plates, and the two arc-shaped strip plates are arranged at a certain interval, so as to realize the rotatable clamping and fixing of the transmission member 21.

[0057] In some possible embodiments, the arc-shaped strip plate is preferably provided with clamping sliding balls 202, that is, clamping sliding balls 202 are provided at both ends of the arc-shaped strip plate. The clamping sliding balls 202 are disposed on the surface adjacent to the transmission plate 210, and the clamping sliding balls 202 are slidably connected to the transmission plate 210. The setting of the clamping sliding balls 202 makes the friction between the clamping bracket 201 and the transmission member 21 smaller.

[0058] For the transmission member 21, as Figure 1 and Figure 2 shown, the transmission member 21 includes a transmission plate 210, two transmission rods 211 and two transmission sliders 212; the transmission plate 210 is slidably connected to the two clamping brackets 201, the transmission plate 210 is fixed by the two clamping brackets 201, the transmission plate 210 is fixedly connected to the two transmission rods 211, and the two transmission rods 211 are respectively fixedly connected to the two transmission sliders 212; the two transmission sliders 212 are respectively slidably clamped in two diagonal slots 3000 of the impeller component 3. After adopting this setting method, when the transmission slider 212 slides downward in the diagonal slot 3000, it will trigger the impeller component 3 to rotate clockwise, thereby driving the impeller component 3 to rotate and expand. Similarly, when the transmission slider 212 slides upward in the diagonal slot 3000, it will trigger the impeller component 3 to rotate counterclockwise, thereby driving the impeller component 3 to rotate and contract.

[0059] In the first embodiment of the present application, regarding the above-mentioned impeller component 3, please refer to Figure 4 and Figure 5The impeller component 3 includes an impeller clamp 30 and an impeller component 31 with a variable diameter; the impeller component 31 is rotatably clamped in the impeller clamp 30; along the axial direction of the impeller component 3, a plurality of oblique grooves 3000 are provided on the impeller clamp 30, and the rotation of the impeller clamp 30 is used to drive the impeller component 31 to rotate and extend or contract. After adopting this arrangement, the impeller component 31 is contracted or expanded under the drive of the impeller clamp 30, so that the diameter of the impeller component 31 is variable and adjustable.

[0060] For the impeller 31, Figure 5 As shown, the impeller member 31 includes an output shaft 310, a plurality of blades 311 and two oppositely arranged impeller plates 312; the two oppositely arranged impeller plates 312 are fixedly connected to the output shaft 310, both ends of the output shaft 310 pass through the impeller plates 312, and the output end is transmission-connected to the generator 4 through the coupling 5, and the rotational mechanical energy of the output shaft 310 is converted into electrical energy in the generator 4 for power generation, and the generator 4 is fixedly connected through the motor support 8, so that the entire device can keep the position fixed; a plurality of blades 311 are arranged between the two impeller plates 312, and a plurality of first through grooves 3120 are arranged in the diameter direction of each impeller plate 312, and the two ends of the plurality of blades 311 are slidably clamped in the first through grooves 3120. After adopting this arrangement, when the water flow impacts the front of the blade 311, the blade 311 drives the output shaft 310 to rotate, and drives the motor rotating shaft of the generator 4 to rotate through the coupling 5, thereby realizing power generation.

[0061] The impeller member 31 composed of a plurality of blades 311 is a resistance type impeller, which utilizes the combined torque of the entire impeller to rotate and perform work, and because the resistance type impeller is easy to start, it can work under a lower water flow rate.

[0062] It should be pointed out that, since the transmission member 21 and the connecting member 20 in the transmission component 2 are in sliding connection, the rotation of the impeller component 3 will not cause mechanical interference to the transmission component 2 .

[0063] For the impeller holder 30, if Figure 4 As shown, the impeller clamping member 30 includes a sleeve 300, an impeller support rod 301 and two oppositely arranged impeller clamping plates 302, the two impeller clamping plates 302 are fixedly connected by the impeller support rod 301, the sleeve shaft is fixedly connected to the impeller clamping plate 302 away from the blade 311, the sleeve 300 is sleeved outside the output shaft 310, and two oblique grooves 3000 are provided on the outer wall of the sleeve 300. The impeller member 31 is clamped between the two impeller clamping plates 302, and a plurality of second through grooves 3020 are provided in the diameter direction on each impeller clamping plate 302, and the two ends of the plurality of blades 311 are respectively slidably connected to the plurality of second through grooves 3020. After adopting this arrangement, the impeller clamping member 30 can drive the impeller member 31 to rotate, contract or expand.

[0064] Specifically, for the control structure of the impeller to contract or expand, the first through groove 3120 of the impeller plate 312 is aligned with the second through groove 3020 of the impeller clamping plate 302. First sliding blocks and second sliding blocks are sequentially arranged at both ends of the blade 311 along the direction away from the center. The first sliding blocks at both ends of the blade 311 are slidably clamped and connected to the first through groove 3120 of the impeller plate 312, and the second sliding blocks at both ends of the blade 311 are slidably connected to the second through groove 3020 of the impeller clamping plate 302. After adopting this setting, the oblique slot 3000 of the impeller clamping member 30 rotates driven by the transmission member 2, and the second through groove 3020 of the impeller clamping member 30 also rotates accordingly. The rotation of the second through groove 3020 drives the blade 311 to move in the first through groove 3120, that is, the second through groove 3020 controls the stroke of the impeller in the first through groove 3120. When the second through groove 3020 rotates clockwise, it drives the blade 311 to move away from the center in the first through groove 3120. When the second through groove 3020 rotates counterclockwise, it drives the blade 311 to move closer to the center in the first through groove 3120. During this process, the change of the entire blade 311 in the first through groove 3120 is continuous, that is, the change value of the diameter of the impeller member 31 is also continuous, so that the diameter of the impeller member 31 can be dynamically adjusted, and further linearly and stably control the output power of the power generation device.

[0065] In some possible embodiments, the first through groove 3120 is an arc-shaped through groove, and the second through groove 3020 is a linear through groove. By the cooperation of two through grooves with different shapes, the stroke of the blade 311 in the first through groove 3120 is controlled, so as to realize the contraction or expansion of the impeller.

[0066] In some possible embodiments, the oblique slot 3000 includes a first arc-shaped groove body and a second arc-shaped groove body. The first arc-shaped groove body is connected to the second arc-shaped groove body, and the centripetal direction of the first arc-shaped groove body is arranged opposite to the centripetal direction of the second arc-shaped groove body. After adopting this setting method, the sliding friction of the transmission slider 212 of the transmission member 21 in the oblique slot 3000 can be reduced, and the smoothness of movement can be improved.

[0067] As can be seen from the above, the basic structure of the vertical pipe hydraulic power generation device of the present application is described above. The principle will be elaborated below.

[0068] When the water flow velocity is greater than the preset value of the telescopic component 1, the transmission component 2 moves in the obliquely grooved slot 3000 away from the impeller component 3 to trigger the contraction of the impeller component 3, reducing the output power of the impeller component 3 to maintain a stable output power; when the water flow velocity is less than the preset value of the telescopic component 1, the transmission component 2 moves in the obliquely grooved slot 3000 towards the impeller component 3 to trigger the expansion of the impeller component 3, increasing the output power of the impeller component 3 to maintain a stable output power. That is, this solution can dynamically adjust the diameter of the impeller according to the incoming flow conditions, so that after reaching the rated output power, when the water flow velocity changes, the output power (i.e., voltage and current) of the power generation device can still be maintained within a stable and safe range, reducing the fluctuation of power output and effectively protecting the safety of the power system.

[0069] Specifically, please refer to Figure 7 and Figure 8 , when the magnitude of F is known, the inner shell 100 and the outer shell 101 are used to adjust the initial expansion and contraction amount of the compression spring (telescopic member 12), that is, to make the diameter of the impeller member 31 in the maximum diameter state, and the initial pressure of the compression spring on the piston 11 is F.

[0070] It should be noted that V0 is the critical value of the water flow velocity when the power generation device reaches the rated power; F is the force of the water flow in the pipe on the piston 11 when the water flow velocity is V0, which is a fixed value; F N is the force of the water flow in the pipe on the piston 11, which changes with the change of the water flow velocity and is not a fixed value. When the water flow velocity is V0, F N = F, where the specific values of F and V0 can be obtained through simulation calculation or experiments.

[0071] When the fluid flow velocity in the pipeline is less than V0 (that is, when the power generation power is less than the rated power), the compression spring pushes the connecting rod 200 to reset to the position where it contacts the limit block of the inner shell 100, and the telescopic component 1, the transmission component 2, and the impeller component 3 reset to the initial position. At this time, the impeller diameter is in the maximum state to fully absorb the energy of the fluid.

[0072] When the fluid flow velocity in the pipeline increases beyond the V0 value (that is, when the power generation power is greater than the rated power), the pressure F of the fluid on the piston 11 N is greater than the pressure of the compression spring on the piston 11 (that is, F NWhen the fluid velocity in the pipeline increases to a pressure F on the piston 11 (when F > F), the compression spring contracts upward. During the contraction process, the piston 11 drives the connecting rod 200 to rise synchronously, driving the transmission slider 212 to move upward in the obliquely slotted groove 3000, causing the bushing 300 to rotate relative to the impeller component 3 in a relative right-handed (counterclockwise) direction, driving the second slider 3111 of the blade 311 to move towards the axial center direction in the second through groove 3020, thereby driving the first slider 3110 of the blade 311 to move towards the axial center direction in the first through groove 3120, achieving the overall contraction of the blade 311 towards the axial center direction, to complete the effect of reducing the diameter of the impeller part 31, which can effectively reduce the force of the fluid on the impeller (as Figure 7 shown), reduce the energy capture ability of the impeller, maintain the output power of the power generation device at the rated value, and prevent damage to the impeller component 3 and overload burnout of the power generation device.

[0073] When the fluid velocity in the pipeline increases to a pressure F on the piston 11 such that N it equals the pressure of the compression spring on the piston 11 (i.e., F N = F), both the compression spring and the piston 11 remain stationary, making it a stable power generation output power.

[0074] When the fluid velocity in the pipeline decreases, the piston 11 and the connecting rod 200 descend synchronously, driving the transmission slider 212 to move downward in the obliquely slotted groove 3000, causing the bushing 300 to rotate relative to the impeller component 3 in a relative left-handed (clockwise) direction, driving the second slider 3111 on the blade 311 to move away from the axial center direction in the second through groove 3020, thereby driving the first slider 3110 of the blade 311 to move away from the axial center direction in the first through groove 3120, achieving the effect of increasing the diameter of the impeller part 31, enhancing the energy capture ability of the impeller, and continuing to maintain the output power of the power generation device at the rated value.

[0075] As can be seen from the above, the basic structure and principle of the vertical pipeline hydraulic power generation device of the present application are as follows. Below, the application of the vertical pipeline hydraulic power generation device on a pipeline water meter will be elaborated. Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 9 .

[0076] In the application of the vertical pipeline hydraulic power generation device on a pipeline water meter, it includes a pipeline 6, an energy management module 11a, a water meter 12a, a guide vane 7, and a vertical pipeline hydraulic power generation device;

[0077] Both the guide vane 7 and the vertical pipeline hydraulic power generation device are arranged in the pipeline 6. The output shaft 310 of the vertical pipeline hydraulic power generation device is arranged perpendicular to the water flow direction, and the vertical pipeline hydraulic power generation is electrically connected to the water meter; along the water flow direction, the guide vane 7 is aligned with the vertical pipeline hydraulic power generation device.

[0078] Compared with a horizontal pipeline hydraulic power generation device in the prior art (application number CN201910868686), when the horizontal water turbine is applied, a relatively large water flow velocity is required to start, otherwise it cannot operate. Specifically, when the water flow velocity is slow, the output power generation is not high or even cannot be output. Therefore, it cannot be applied under low flow velocity conditions, while the vertical layout of this solution can be applied both under low flow velocity conditions and high flow velocity conditions.

[0079] For the pipeline 6, at least one through hole is provided on the pipeline for connecting the vertical pipeline hydraulic power generation device. The pipeline 6 is a T-shaped pipeline. A flip cover 10a, a generator 4 and its motor support 8 are provided at the top of the pipeline 6. The generator 4 is fixed to the top inside the pipeline through the motor support 8. The flip cover 10a facilitates users to repair the vertical hydraulic power generation device. Flange plates 9 are fixedly provided at both ends of the pipeline. The flange plates 9 can connect the pipeline to the water supply pipe. The present invention is more suitable for installation in the main water supply pipe with a larger diameter. Compared with the small-diameter water supply pipeline, the main water supply pipe has more stable water pressure and more abundant fluid, which is beneficial to the performance of the telescopic component 1 and the stable operation of the power generation device.

[0080] It should be noted that the reason why the present invention is more suitable for installation in the main pipeline is as follows: First, compared with the small-diameter residential water pipes, the main water supply pipe in the community has more abundant fluid, can obtain more energy and is beneficial to the performance of the telescopic component; Second, the main pipeline has a larger diameter and more stable flow rate than the residential water pipes, which can solve the problem of insufficient power generation caused by less water consumption of individual residents or some families who are away from home for a long time, resulting in insufficient power supply for the water meter; Third, the cost of a single generator is relatively high. Installing the power generation device on the main pipeline and sharing one generator by multiple households to supply power to their respective water meters is more easily promoted and applied.

[0081] For the vertical pipeline hydraulic power generation device, the impeller component 3 is arranged inside the pipeline 6 for transmitting the mechanical energy of the water flow into the generator 4; the telescopic component 1 is arranged inside the pipeline for sensing the change of the fluid pressure inside the pipeline, and has the advantages of simple structure and easy adjustment. The whole vertical pipeline hydraulic power generation device has a simple structure, small volume, small installation space and simple assembly structure, and can be applied to narrow spaces such as urban underground water supply pipe networks and household water supply pipes, providing more stable and sufficient electric energy for pipeline monitoring instruments such as intelligent water meters.

[0082] For the energy management module 11a, the energy management module 11a has functions of rectification, voltage stabilization, energy storage and control of power output, and the output end can be electrically connected to multiple intelligent water meters. The electric energy output by the power generation device is processed by the energy management module to supply power to the intelligent water meters of multiple households.

[0083] For the water meter 12a, the water meter 12a is connected to the tap water pipeline, and the water meter 12a is signal-connected to the vertical pipeline hydroelectric power generation device through the energy management module 11a. The power of the vertical pipeline hydroelectric power generation device is transmitted to the water meter through the energy management module to provide power for the water meter 12a, avoiding frequent replacement of the power supply of the water meter 12a.

[0084] For the flow deflector 7, along the oncoming flow direction, the flow deflector 7 is arranged in front of the impeller component 3, and the flow deflector 7 is aligned with the impeller component 3. The main function of the flow deflector is to direct the fluid to the front of the blade 311 and reduce the action of the fluid on the back of the blade 311, thereby increasing the positive torque received by the impeller member 31 and reducing the negative torque received by the impeller component 3, achieving an increase in the overall total resultant torque. At the same time, the flow deflector also has the effect of increasing the fluid velocity, enabling the entire device to generate electricity in occasions where the oncoming flow velocity in the tap water pipe is relatively small, and effectively assisting the rotation of the impeller member 31.

[0085] In order to verify the action of the water flow on the impeller member 31 under the same working conditions (when the oncoming flow velocity V = 2 m / s and the tip speed ratio TSR = 1), please refer to Figure 7 , the torque M received by the impeller member 31 in the state of the minimum diameter is several times smaller than that in the state of the maximum diameter, which proves that when the diameter of the impeller member 31 is reduced, the acting force of the water flow on the impeller member 31 can be effectively reduced, and the safe operation of the impeller member 31 can be effectively protected.

[0086] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A vertical pipeline hydroelectric power generation device, characterized in that it includes a telescopic component, a transmission component, and an impeller component with variable diameter; the output shaft of the impeller component is drivingly connected to a generator; along the axial direction of the impeller component, a plurality of obliquely slotted openings are provided on the impeller component; the transmission component is slidably clamped in a plurality of the obliquely slotted openings, and the transmission component is fixedly connected to the telescopic end of the telescopic component; the telescopic component is used to expand and contract according to the magnitude of the water flow, the expansion and contraction of the telescopic component is used to drive the transmission component to move back and forth in the obliquely slotted openings, and the back and forth movement of the transmission component in the obliquely slotted openings is used to control the contraction or expansion of the impeller component; when the water flow velocity is greater than the preset value of the telescopic component, the transmission component moves in the obliquely slotted openings in a direction away from the impeller component to trigger the contraction of the impeller component; when the water flow velocity is less than the preset value of the telescopic component, the transmission component moves in the obliquely slotted openings in a direction adjacent to the impeller component to trigger the expansion of the impeller component; the transmission component includes a connecting member and a transmission member; the connecting member is fixedly connected to the telescopic end of the telescopic component, and the connecting member is slidably connected to the transmission member; the transmission member is slidably clamped in a plurality of the obliquely slotted openings; the telescopic component includes a piston, a housing, and a telescopic member; both ends of the housing are respectively provided with an inlet hole and a water inlet hole; the piston is clamped at one end of the housing adjacent to the water inlet hole, the piston is slidably connected to the housing, and the connecting member passes through the inlet hole and is fixedly connected to the piston; the telescopic member is arranged between the housing and the piston; the impeller component includes an impeller clamping member and an impeller member with variable diameter; the impeller member is rotatably clamped in the impeller clamping member; along the axial direction of the impeller component, a plurality of the obliquely slotted openings are provided on the impeller clamping member, and the rotation of the impeller clamping member is used to drive the impeller member to rotate for expansion or contraction.

2. The vertical pipeline hydroelectric power generation device according to claim 1, characterized in that the transmission member includes a transmission plate, a plurality of transmission rods, and a plurality of transmission sliders; the transmission plate is slidably connected to the connecting member, the transmission plate is fixedly connected to a plurality of the transmission rods, and a plurality of the transmission rods are respectively fixedly connected to a plurality of the transmission sliders; a plurality of the transmission sliders are respectively slidably clamped in a plurality of the obliquely slotted openings.

3. The vertical pipeline hydroelectric power generation device according to claim 2, characterized in that the connecting member includes a connecting rod and two clamping frames; the connecting rod is fixedly connected to the piston, and the connecting rod is fixedly connected to both of the clamping frames; the transmission plate is arranged between the two clamping frames, and both of the clamping frames are slidably connected to the transmission plate.

4. The vertical pipeline hydroelectric power generation device according to claim 1, characterized in that the impeller member includes a plurality of blades and two oppositely arranged impeller plates; the impeller clamping member includes two oppositely arranged impeller clamping plates; a plurality of first through slots are provided in the diameter direction of both of the impeller plates; A plurality of second through grooves are provided in the diameter direction of the two impeller clamping plates; The plurality of first through grooves are respectively aligned with the plurality of second through grooves. The blades are slidably clamped on the first through grooves, and the blades are slidably connected to the second through grooves. The second through grooves are used to control the stroke of the blades in the first through grooves.

5. A pipeline water meter applying the vertical pipeline hydraulic power generation device according to claim 1, characterized in that it includes a pipeline, an energy management module, a water meter, a flow guide plate and a vertical pipeline hydraulic power generation device; The flow guide plate and the vertical pipeline hydraulic power generation device are both arranged in the pipeline; The output shaft of the vertical pipeline hydraulic power generation device is arranged perpendicular to the water flow direction. The water meter is connected to the vertical pipeline hydraulic power generation device, and the vertical pipeline hydraulic power generation device is electrically connected to the water meter through the energy management module; Along the water flow direction, the flow guide plate is aligned with the vertical pipeline hydraulic power generation device.

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