WO2020155520A1

WO2020155520A1 - Water turbine

Info

Publication number: WO2020155520A1
Application number: PCT/CN2019/091436
Authority: WO
Inventors: 林彬
Original assignee: 林彬
Priority date: 2019-01-28
Filing date: 2019-06-15
Publication date: 2020-08-06

Abstract

A water turbine, comprising a roller (1), a power shaft (2), a fixed frame (3), an arc-shaped flow guiding plate (4) and a plurality of movable blades (5). The roller (1) is arranged on one side of a water feeding end (10), the arc-shaped flow guiding plate (4) is located on the bottom side of the roller (1), and a drainage channel is formed between the two; the power shaft (2) is penetratively connected to the roller (1), and two end faces of the roller (1) are connected to the fixed frame (3) respectively; a first side of the movable blades (5) is rotatably connected to the fixed frame (3), and the fixed frame (3) is provided thereon with a locking device used for fixing a second side of the movable blades (5). Also comprised is a control device which controls the second sides of the movable blades (5) to be connected to and separated from the locking device. The present water turbine may increase the utilization rate of water energy and reduce noise pollution.

Description

A kind of water turbine

Technical field

The invention relates to the technical field of hydroelectric power generation equipment, in particular to a hydraulic turbine.

Background technique

A water turbine is a power device that converts water energy into mechanical energy and is widely used in hydroelectric power generation and other fields. According to the different ways of setting the power shaft, the turbine can be divided into vertical type and horizontal type. The vertical type means the power shaft is set vertically, and the horizontal type is the power shaft horizontally. At present, the vertical type is most used, and the horizontal type is rarely used.

The current horizontal water turbine has a low conversion rate of gravitational potential energy to water. For example, the technical solution described in the Chinese invention patent "Ultra-low-head tumble flow turbine" (patent number 201720313863.3), "a water inlet is set on one side of the drum and An arc-shaped deflector is installed at the lower part of the side, and the deflector is connected with the water inlet. A number of movable blades are evenly arranged on the circumference of the drum. The movable blades are composed of a support frame and a blade body. The edge is hinged to the support frame". Based on the above technical solution, during the rotation of the water wheel, part of the blades are impacted by the water flow to drive the power shaft to rotate and perform work, while the other part of the blades are exposed to the air. The blades exposed to the air will be reacted by the water when entering the water flow. When the water wheel continues to rotate and the blade leaves the water surface, the blade will overcome the resistance of the water to perform work, and the blade will be affected by the air in the process of rotating with the drum. Large resistance and loud noise. To sum up, the above-mentioned water turbine causes the blades to consume a large part of the energy to overcome the resistance of the water flow to perform work, which leads to low water energy utilization rate, which in turn makes the energy conversion rate of the water turbine low, and the blades are easily damaged during use and the water turbine cannot be used. , The impact of blades and water flow causes noise pollution.

Summary of the invention

The purpose of the present invention is to provide a water turbine, which can improve the utilization rate of water energy, reduce noise pollution, ensure the stable operation of the water turbine, and prolong the service life of the water turbine.

Based on this, the present invention provides a hydraulic turbine, including a drum, a power shaft, a fixed frame, an arc-shaped deflector and a number of movable blades. The drum is arranged on one side of the water inlet, and the arc-shaped deflector is located at the On the bottom side of the drum, the length of the arc-shaped deflector is greater than or equal to the length of the drum, and a drain channel is formed between the arc-shaped deflector and the drum;

The power shaft passes through the center of the drum, the fixing frame is arranged along the outer surface of the drum, the fixing frame includes a left side plate and a right side plate parallel to each other, and the two end faces of the drum are respectively Connected with the left side plate and the right side plate, and the size of the left side plate and the right side plate is larger than the size of the end surface of the drum, and the first side of the movable blade is connected to the fixed frame Rotatably connected, the fixing frame is provided with a locking device for fixing the second side of the movable blade;

It also includes a control device for controlling the second side of the movable blade to be separated from the locking device. When the movable blade enters the drain channel with the drum, the control device controls the The second side of the movable blade is separated from the locking device, and the water flow impacts the movable blade so that the second side of the movable blade abuts against the outer wall surface of the drum and forms a water blocking groove. When the movable blade comes out of the drain channel and continues to rotate, the second side of the movable blade is gradually connected with the locking device.

As a preferred solution, the left side plate and the right side plate are both circular plates, the outer circumference of the left side plate and the outer circumference of the right side plate are provided with fixing bars, and the fixing bars are The power shafts are parallel, and the two ends of the fixed strip are respectively connected with the left side plate and the right side plate, and the first side of the movable blade is rotatably connected to the fixed strip. When the second side of the movable blade is fixed to the locking device, the outer surface of each movable blade is located on the same cylindrical surface.

As a preferred solution, the movable blade is a metal blade, and magnets corresponding to the second side of the movable blade are arranged at intervals on the outer circumference of the left side plate and the outer circumference of the right side plate. Each of the magnets constitutes the locking device.

As a preferred solution, the control device includes a front control rail and a control guide wheel arranged on each of the movable blades, the control guide wheel is connected to the outer surface of the movable blade through the connecting rod, and the arc The end of the arc-shaped deflector close to the water inlet is the first end of the arc-shaped deflector, and the end of the arc-shaped deflector away from the water inlet is the second end of the arc-shaped deflector. The first end of the control rail is connected to the first end of the arc-shaped deflector, the second end of the front control rail extends toward the water inlet end, and the distance between the front control rail and the power shaft It gradually decreases from the second end of the front control rail to the first end of the front control rail, and the control guide wheel slides along the second end of the front control rail to the first end of the front control rail The second side of the movable blade is separated from the locking device and gradually abuts against the outer wall surface of the drum.

As a preferred solution, the curved surface of the curved deflector for the control guide wheel to slide is adapted to the outer wall surface of the drum, and the connection between the curved deflector and the front control rail is in a smooth transition .

As a preferred solution, the control device further includes a rear control rail, the first end of the rear control rail is connected to the second end of the arc-shaped deflector, and the rear control rail is connected to the arc-shaped guide. The connection between the flow plates presents a smooth transition, the second end of the rear control rail extends toward the side away from the water inlet end, and the distance between the rear control rail and the power shaft is determined by the distance between the rear control rail and the power shaft. The first end to the second end of the rear control rail gradually increases, and the control guide wheel slides along the first end of the rear control rail to the second end of the rear control rail so that the first end of the movable blade The two sides are separated from the drum and gradually connected with the locking device.

As a preferred solution, the front control rail, the arc-shaped deflector and the rear control rail are an integrated structure.

As a preferred solution, a plurality of movable blades are arranged in an array along the power shaft, and a plurality of support members corresponding to the movable blades are provided on the outer wall of the drum.

As a preferred solution, the support includes a first support and a second support, the first support has a linear structure, and the first end of the first support is perpendicularly connected to the outer wall of the drum , The second end of the first support is connected with the fixing strip, the outer contour of the second support is adapted to the inner wall surface of the movable blade, and the first end of the second support Connected with the fixing bar, and the second end of the second support is connected with the outer wall surface of the drum.

As a preferred solution, the fixed bar is provided with a hinge along its length direction, and the first side of the movable blade is hinged to the fixed bar through the hinge.

Implementing the embodiments of the present invention has the following beneficial effects:

Water flows through the turbine from the inlet end, and the arc-shaped deflector is located on the bottom side of the drum. The length of the arc-shaped deflector is greater than or equal to the length of the drum, and a water discharge channel is formed between the arc-shaped deflector and the drum. This ensures that the water flow can flow along the arc-shaped deflector, and the water flowing from the inlet end flows along the drain channel and flows out along the outlet end. When the water flows through, the roller is rotated by the movable blade, thereby reducing the gravity of the water. The potential energy is converted into the mechanical energy of the rotation of the drum. After that, the external power generation device of the power shaft converts the mechanical energy into electric energy storage, and then realizes the conversion of water energy into electric energy; specifically, when the movable blades rotate with the drum and have not yet entered the drain channel, the control device controls The second side of the movable blade is connected with the locking device, so the movable blade is in a retracted state when it enters the water from the air. The small contact area between the movable blade and the water flow makes the movable blade receive the water flow. The reverse resistance is very small, thereby reducing unnecessary water energy loss. When the movable blade enters the drain channel, the control device separates the second side of the movable blade from the locking device and away from the fixing frame outside the drum At this time, the second side of the movable blade is the movable side, and the water flow impacts the movable blade so that the second side of the movable blade abuts against the outer wall surface of the drum and forms a water blocking groove. The movable blade is always in an open state in the drain channel, namely At this time, the movable blade and the outer wall surface of the drum form a water blocking groove, and the two ends of the water blocking groove are the left side plate and the right side plate, so the water blocking groove, the left side plate and the right side plate constitute a water blocking cavity The water flow in the water blocking chamber and from high to low will further drive the drum to rotate, so that the gravitational potential energy of the water is fully converted into the mechanical energy of the drum rotation. When the movable blade comes out of the drain channel and continues to rotate, it will move The second side of the blade is gradually connected with the locking device, that is, after the movable blade is rotated out of the drain channel, the movable blade is fixedly connected with the fixed frame again, that is, when the movable blade is located outside the drain channel, the movable blade The second side is connected with the locking device. After that, until the movable blade rotates to the entrance of the water discharge channel again, the movable blade opens again, thereby realizing the cyclic operation of opening and retracting the movable blade. In summary, because the above structure can ensure that the movable blades are in a retracted state when entering the water from the air, the mechanical energy loss that does not cause the drum to rotate is used to overcome the huge reverse resistance of the water flow, thereby improving the water energy The water flow of the movable blades will not cause noise and damage the movable blades, so that the turbine has a long service life and stable operation. In addition, the movable blades are fully opened at the drain channel, and the water blocking groove formed by the movable blades prevents water flow. The overflow thus better promotes the rotation of the drum, further mentioning the utilization of water energy.

Description of the drawings

Figure 1 is a schematic structural diagram of a water turbine in an embodiment of the present invention.

Figure 2 is a schematic diagram of the structure of the connection between the roller and the fixed frame in the embodiment of the present invention.

In the picture: 1. Drum; 2. Power shaft; 3. Fixed frame; 31, left side plate; 32, right side plate; 33, fixed strip; 4. curved deflector; 5. movable blade; 6, magnet 7. Front control rail; 8. Control guide wheel; 9. Connecting rod; 10. Water inlet end; 11. Rear control rail; 12. Support; 121. First support; 122. Second support.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, “first” information may also be referred to as “second” information, and similarly, “second” information may also be referred to as “first” information. It should be pointed out that the direction of the arrow in Figure 1 is the direction of water flow.

As shown in Figures 1 to 2, this embodiment provides a water turbine, which includes a drum 1, a power shaft 2, a fixed frame 3, an arc-shaped deflector 4 and a number of movable blades 5. The drum 1 is arranged at the water inlet It should be pointed out that the water on the water inlet 10 flows out from the water inlet bin, and the highest water level of the water flow is higher than the bottom end of the drum 1, and the highest water turbine The point is higher than the highest water level of the water flow, so that the water flows through to realize the stable power generation of the water turbine. In this embodiment, the water flow flows through the water turbine from the water inlet 10 to convert the water energy into electric energy for storage. The curved deflector 4 is located on the bottom side of the drum 1, and the length of the arc-shaped deflector 4 is greater than or equal to the length of the drum 1, thereby ensuring that water can flow along the arc-shaped deflector 4, and the arc A water discharge channel is formed between the curved deflector 4 and the drum 1, that is, the water flowing out from the water inlet 10 flows through the water discharge channel and flows out along the water outlet;

The power shaft 2 penetrates the center of the drum 1, and the fixing frame 3 is arranged along the outer surface of the drum 1. When the drum 1 rotates, the power shaft 2 is driven to rotate. One end of the power shaft 2 is connected to a power generating device Therefore, the water energy is converted into the kinetic energy of the rotation of the power shaft 2, and then the kinetic energy is converted into electric energy storage. The power generating device is a power generating device such as a generator. The fixed frame 3 includes a left side plate 31 and a right side parallel to each other. The two end surfaces of the drum 1 are respectively connected to the left side plate 31 and the right side plate 32, and the size of the left side plate 31 and the right side plate 32 is larger than that of the drum 1 The size of the end surface, from which the left side plate 31 and the right side plate 32 extend along the drum 1. At this time, the left side plate 31, the right side plate 32 and the drum 1 form an annular accommodating space, which is the movement of the movable blade 5 To provide space, the first side of the movable blade 5 is rotatably connected with the fixed frame 3, and the fixed frame 3 is provided with a locking device for fixing the second side of the movable blade 5, namely the movable blade 5 The first side of the movable blade can rotate around the fixed frame 3, so that the movable blade 5 can be stowed according to the requirements, so as to avoid the impact caused by the water flow when the movable blade 5 extends. When the second side of the movable blade 5 and the fixed frame When the locking device on 3 is connected, the movable blade 5 is integrated with the fixed frame 3. At this time, the contact area between the movable blade 5 and the water flow is small. At this time, the water flow resistance when the movable blade 5 impacts with water is small. The specific structure of the locking device can be various. For example, an intelligent control device is used to connect the movable blade 5 with the fixed frame 3 in a designated area. Although the intelligent control device will make the control cost high and the structure complicated, it is also Achievable

It also includes a control device for controlling the second side of the movable blade 5 to be separated from the locking device. When the movable blade 5 enters the drain channel with the drum 1, the control device The second side of the movable blade 5 is controlled to be separated from the locking device, that is, when the movable blade 5 is outside the drain channel, the second side of the movable blade 5 is connected with the locking device, thereby moving When the blade 5 enters the water from the air, it is in a retracted state, and when it is in contact with the water flow, the reverse resistance of the water flow is small. When the movable blade 5 is in the water discharge channel, the control device makes the second side of the movable blade 5 far away The fixed frame 3 outside the drum 1, and the water flow impacts the movable blade 5 so that the second side of the movable blade 5 abuts against the outer wall surface of the drum 1 and forms a water blocking groove. Preferably, the movable blade 5 The length is equal to the length of the drum 1 or the length of the movable blade 5 is slightly less than the length of the drum 1, that is, at this time, the movable blade 5 abuts against the outer wall of the drum 1 to form a water blocking groove, and the two ends of the water blocking groove are left side plates 31 and the right side plate 32, the water blocking groove, the left side plate 31 and the right side plate 32 constitute a water blocking chamber. The water flowing in the water blocking chamber and from high to low will further drive the drum 1 to rotate. Thus, the gravity energy of the water is converted into mechanical energy. After that, the power shaft 2 converts the mechanical energy into electric energy and stores. When the movable blade 5 comes out of the water discharge channel and continues to rotate, the second side of the movable blade 5 gradually and The locking device is connected, that is, after the movable blade 5 is rotated out of the water discharge channel, the movable blade 5 is fixedly connected to the fixed frame 3 again, and thereafter, until the movable blade 5 rotates to the entrance of the water discharge channel again, the movable blade 5 is opened again, thereby realizing the cyclic operation of opening and retracting the movable blade 5, and the open state of the movable blade 5 in this embodiment means that the movable blade 5 is separated from the locking device and away from the fixed frame 3, and the movable blade is retracted The starting state is that the movable blade 5 is connected with the locking device on the fixed frame 3.

Based on the above technical solution, the water flows through the turbine from the water inlet 10, and the arc-shaped deflector 4 is located on the bottom side of the drum 1. The length of the arc-shaped deflector 4 is greater than or equal to the length of the drum 1, and the arc-shaped deflector A drain channel is formed between the plate 4 and the drum 1, thereby ensuring that water can flow along the arc-shaped deflector 4, and the water flowing out from the water inlet 10 flows along the drain channel and flows out along the water outlet. When flowing through, the roller 1 is rotated by the movable blade 5, thereby converting the gravitational potential energy of the water into the mechanical energy of the rotation of the roller 1. After that, the power shaft 2 is connected to an external power generating device to convert the mechanical energy into electric energy storage, and then realize the conversion of water energy into electric energy; When the movable blade 5 rotates with the drum 1 and has not yet entered the drain channel, the control device controls the second side of the movable blade 5 to connect with the locking device, so that the movable blade 5 is in the retracted state when entering the water from the air Because the contact area between the movable blade 5 and the water flow is small, the movable blade 5 receives little reverse resistance from the water flow, thereby reducing unnecessary water energy loss, and when the movable blade 5 enters the water discharge In the passage, the control device makes the second side of the movable blade 5 separate from the locking device and away from the fixed frame 3 outside the drum 1. At this time, the second side of the movable blade 5 is the movable side, and the water flow impacts the movable blade 5 to make it move. The second side of the blade 5 abuts against the outer wall surface of the drum 1 and forms a water blocking groove. The movable blade 5 is always open in the drain channel, that is, the movable blade 5 abuts against the outer wall surface of the drum 1 to form a barrier Water tank, and the two ends of the water blocking tank are the left side plate 31 and the right side plate 32, so the water blocking groove, the left side plate 31 and the right side plate 32 constitute a water blocking chamber, and the water flows in the water blocking chamber and is composed of high When the flow to the lower part, the drum 1 is further driven to rotate, so that the gravitational potential energy of the water is fully converted into the mechanical energy of the rotation of the drum 1. When the movable blade 5 comes out of the drain channel and continues to rotate, the second side of the movable blade 5 gradually and The locking device is connected, that is, after the movable blade 5 is rotated out of the drain channel, the movable blade 5 is fixedly connected with the fixed frame 3 again, that is, when the movable blade 5 is located outside the drain channel, the second of the movable blade 5 The side is connected with the locking device. After that, until the movable blade 5 rotates to the entrance of the drain channel again, the movable blade 5 is opened again, thereby realizing the cyclic operation of opening and retracting the movable blade 5. In summary, because the above structure can ensure that the movable blade 5 is in a retracted state when entering the water from the air, the mechanical energy loss that does not cause the drum 1 to rotate is used to overcome the huge reverse resistance of the water flow, thereby improving the water flow. The water flow of the movable blade 5 will not cause noise and damage the movable blade 5, so that the turbine has a long service life and stable operation. In addition, the movable blade 5 is in a fully open state at the drain channel, and the resistance formed The water trough prevents the water flow from overflowing, thereby better pushing the drum 1 to rotate, further mentioning the utilization rate of water energy.

In this embodiment, the left side plate 31 and the right side plate 32 are both circular plates, and fixing strips 33 are provided on the outer circumference of the left side plate 31 and the outer circumference of the right side plate 32. The fixed strip 33 is parallel to the power shaft 2, and both ends of the fixed strip 33 are connected to the left side plate 31 and the right side plate 32 respectively. Side is rotatably connected to the fixing strip 33. When the second side of each movable blade 5 is fixed to the locking device, the outer surface of each movable blade 5 is located on the same cylindrical surface, that is, the fixed The strip 33 enables the movable blades 5 to be stably connected to the fixed frame 3. Since the movable blades 5 are located on the same cylindrical surface when the movable blades 5 are in the retracted state, the impact resistance between the movable blades 5 and the water flow is further reduced, And make the movable blade 5 rotate stably in the retracted state.

Preferably, the movable blade 5 is a metal blade, and the outer circumference of the left side plate 31 and the outer circumference of the right side plate 32 are provided with spaced apart corresponding to the second side of the movable blade 5 The magnet 6, a plurality of the magnets 6 constitute the locking device, that is, when the movable blade 5 is connected to the fixed frame 3 under the action of the control device, the movable blade 5 is connected to the left side plate 31 and the right side plate 32 The magnet 6 is connected. The magnet 6 makes the fixed connection of the movable blade 5 more convenient, but the magnet 6 is a preferred solution, but it cannot be regarded as a limitation. For example, other structures such as electromagnetic parts or suction cups, as long as the movable blade 5 can be fixed In addition, the locking device also has other structures. For example, a plug and a socket can be arranged between the fixed frame 3 and the movable blade 5. When the movable blade 5 is at a designated position, the plug and the socket are connected. As a result, the movable blade 5 is fixed on the fixed frame 3, and when the plug and the socket are separated, the movable blade 5 can be further rotated and separated from the fixed frame 3, that is, the specific structure of the locking device can be various , Should not be limited by the specific implementation form of this embodiment.

Specifically, the control device includes a front control rail 7 and a control guide wheel 8 arranged on each of the movable blades 5. The control guide wheel 8 is connected to the outer surface of the movable blade 5 through the connecting rod 9 , Remember that the end of the arc-shaped deflector 4 close to the water inlet 10 is the first end of the arc-shaped deflector 4, and the end of the arc-shaped deflector 4 away from the water inlet 10 is the arc The second end of the front control rail 7 is connected to the first end of the arc-shaped deflector 4, and the second end of the front control rail 7 faces the water inlet 10 extends, the distance between the front control rail 7 and the power shaft 2 gradually decreases from the second end of the front control rail 7 to the first end of the front control rail 7, and the control guide wheel 8 Slide along the second end of the front control rail 7 to the first end of the front control rail 7 so that the second side of the movable blade 5 is separated from the locking device and gradually abuts against the drum 1. The outer wall surface. Based on the above structure, when the movable blade 5 is close to the drain channel, the control guide wheel 8 on the movable blade 5 slides along the front control rail 7. As the distance between the control guide wheel 8 and the power shaft 2 is gradually reduced, the control guide While the wheel 8 abuts the front control rail 7, the second side of the movable blade 5 is slowly separated from the locking device. In this embodiment, the movable blade is separated from the magnet 6, and then the second side of the movable blade 5 is in the water flow. It abuts against the outer surface of the drum 1 under impact, that is, the movable blade 5 is in an open state at this time. The above structure makes the movable blade 5 a gradual process from the retracted state to the opened state, making the opening operation of the movable blade 5 more stable and smooth.

Wherein, the arc-shaped surface on the arc-shaped deflector 4 for the control guide wheel 8 to slide is adapted to the outer wall surface of the drum 1, and the arc-shaped deflector 4 is connected to the front control rail 7 In a smooth transition, the arc of the arc-shaped deflector 4 is parallel to the outer circumference of the drum 1, thereby controlling the guide wheel 8 to always make the movable blade 5 abut on the drum 1 when moving along the arc-shaped deflector 4 At this time, the water flow drives the drum 1 to rotate through the movable blades 5, and no water flow leakage occurs, thereby improving the utilization rate of water energy.

In addition, the control device further includes a rear control rail 11, the first end of the rear control rail 11 is connected with the second end of the arc-shaped deflector 4, and the rear control rail 11 is connected to the arc The connection between the two-shaped baffles 4 presents a smooth transition, the second end of the rear control rail 11 extends toward the side away from the water inlet 10, and the distance between the rear control rail 11 and the power shaft 2 The distance gradually increases from the first end of the rear control rail 11 to the second end of the rear control rail 11, and the control guide wheel 8 slides toward the rear control rail 11 along the first end of the rear control rail 11. The second end of the rail 11 separates the second side of the movable blade 5 from the drum 1 and gradually connects with the locking device. In this embodiment, the locking device is the magnet 6 on the fixed frame 3. Based on the above structure, when the movable blade 5 is slowly rotated out of the drain channel, the control guide wheel 8 on the movable blade 5 slides along the rear control rail 11. As the distance between the control rail and the power shaft 2 gradually increases, After the control guide wheel 8 abuts the control rail 11 and releases the second side of the movable blade 5, the second side of the movable blade 5 slowly approaches the fixed frame 3 under its own gravity, and then the second side of the movable blade 5 The two sides are connected to the magnet 6 on the fixed frame 3, thereby making the movable blade 5 in the retracted state. The above structure makes the movable blade 5 a gradual process from the open state to the retracted state, so that the retracting operation of the movable blade 5 It is more stable and smooth, and prevents the movable blade 5 from being damaged when the movable blade 5 is opened and retracted rapidly.

Preferably, the front control rail 7, the arc-shaped deflector 4, and the rear control rail 11 are integrally formed structures, so that the front control rail 7, the arc-shaped deflector 4, and the rear control rail 11 An integral structure is formed between them, so that the control guide wheel 8 slides more smoothly on the track. In addition, the front control rail 7, the curved baffle 4, and the rear control rail 11 can also be separately formed and installed or cast on site.

In this embodiment, a plurality of movable blades 5 are arranged in an array along the power shaft 2. The movable blades 5 evenly arranged along the outer circumference of the drum 1 make the rotation of the drum 1 more stable, and the outer wall of the drum 1 is provided with several and The support 12 corresponding to the movable blade 5, that is, when the second side of the movable blade 5 abuts against the outer wall surface of the drum 1, the support 12 supports the back of the movable blade 5 to prevent the movable blade 5 from receiving water flow. Deformed during impact. Further, the supporting member 12 includes a first supporting member 121 and a second supporting member 122, the first supporting member 121 has a linear structure, and the first end of the first supporting member 121 is connected to the drum 1 The outer wall surface of the first support member 121 is connected vertically, the second end portion of the first support member 121 is connected to the fixing strip 33, and the outer contour of the second support member 122 is adapted to the inner wall surface of the movable blade 5. The first end of the second support 122 is connected to the fixing strip 33, and the second end of the second support 122 is connected to the outer wall surface of the drum 1. Thus, the first support 121, the second support 122, and the fixing bar 33 form a frame-type support structure, so that the support 12 can stably support the movable blade 5. It should be pointed out that the first The one piece 121 can be a supporting rod, thereby reducing the water flow resistance it receives when air enters the water. The second supporting piece 122 can also be an arc-shaped supporting rod, so that the frame-type supporting structure formed thereby can achieve support At the same time, it is ensured that the water flow resistance it receives is small, and the utilization rate of water energy is improved.

Preferably, the fixed bar 33 is provided with a hinge along its length direction, and the first side of the movable blade 5 is hinged to the fixed bar 33 through the hinge. Specifically, the hinge can be a hinge, In this way, the first side of the movable blade 5 is hinged on the fixed bar 33, and the disassembly, assembly, maintenance and replacement between the movable blade 5 and the fixed bar 33 are convenient. In addition, as one of the implementation forms, the movable blade 5 can also be used The rubber strip is connected to the fixed strip 33, so that the movable blade 5 can be movably connected with the fixed strip 33.

With the water turbine of the embodiment of the present invention, water flows through the water turbine from the water inlet 10, and the arc-shaped deflector 4 is located on the bottom side of the drum 1. The length of the arc-shaped deflector 4 is greater than or equal to the length of the drum 1, and the arc A water discharge channel is formed between the curved deflector 4 and the drum 1, thereby ensuring that water can flow along the curved deflector 4, and the water flowing out from the water inlet 10 flows through the water discharge channel and along the water outlet. When the water flows through, the roller 1 is rotated by the movable blades 5, so that the gravitational potential energy of the water is converted into the mechanical energy of the rotation of the roller 1. After that, the power shaft 2 is connected to an external power generating device to convert the mechanical energy into electrical energy storage, thereby realizing the conversion of water energy into electrical energy Specifically, when the movable blade 5 rotates with the drum 1 and has not yet entered the drain channel, the control device controls the second side of the movable blade 5 to be connected with the locking device, whereby the movable blade 5 is in the water when it enters the water from the air In the stowed state, the small contact area between the movable blade 5 and the water flow makes the movable blade 5 receive little reverse resistance from the water flow, thereby reducing unnecessary water energy loss, and when the movable blade 5 enters When reaching the drain channel, the control device makes the second side of the movable blade 5 separate from the locking device and away from the fixed frame 3 outside the drum 1. At this time, the second side of the movable blade 5 is the movable side, and the water flow impacts the movable blade 5 Make the second side of the movable blade 5 abut against the outer wall surface of the drum 1 and form a water blocking groove. The movable blade 5 is always open in the drain channel, that is, after the movable blade 5 abuts against the outer wall surface of the drum 1 A water blocking groove is formed, and the two ends of the water blocking groove are the left side plate 31 and the right side plate 32, so the water blocking groove, the left side plate 31 and the right side plate 32 constitute a water blocking chamber, and the water flows in the water blocking chamber And when it flows from a high place to a low place, the drum 1 is further driven to rotate, so that the gravitational potential energy of the water is fully converted into the mechanical energy of the rotation of the drum 1. When the movable blade 5 comes out of the drain channel and continues to rotate, the second of the movable blade 5 The side is gradually connected with the locking device, that is, after the movable blade 5 is rotated out of the drain channel, the movable blade 5 is fixedly connected to the fixed frame 3 again, that is, when the movable blade 5 is located outside the drain channel, the movable blade 5 The second side is connected with the locking device. After that, until the movable blade 5 rotates to the entrance of the drain channel again, the movable blade 5 is opened again, thereby realizing the cyclic operation of opening and retracting the movable blade 5. In summary, because the above structure can ensure that the movable blade 5 is in a retracted state when entering the water from the air, the mechanical energy loss that does not cause the drum 1 to rotate is used to overcome the huge reverse resistance of the water flow, thereby improving the water flow. The water flow of the movable blade 5 will not cause noise and damage the movable blade 5, so that the turbine has a long service life and stable operation. In addition, the movable blade 5 is in a fully open state at the drain channel, and the resistance formed The water trough prevents the water flow from overflowing, thereby better pushing the drum 1 to rotate, further mentioning the utilization rate of water energy.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on the drawings shown The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, several improvements and substitutions can be made. These improvements and substitutions It should also be regarded as the protection scope of the present invention.

Claims

A hydraulic turbine, which is characterized in that it comprises a drum, a power shaft, a fixed frame, an arc-shaped deflector and a number of movable blades. The drum is arranged on one side of the water inlet, and the arc-shaped deflector is located on the side of the drum. On the bottom side, the length of the arc-shaped deflector is greater than or equal to the length of the drum, and a drain channel is formed between the arc-shaped deflector and the drum;

The power shaft passes through the center of the drum, the fixing frame is arranged along the outer surface of the drum, the fixing frame includes a left side plate and a right side plate parallel to each other, and the two end faces of the drum are respectively Connected with the left side plate and the right side plate, and the size of the left side plate and the right side plate is larger than the size of the end surface of the drum, and the first side of the movable blade is connected to the fixed frame Rotatably connected, the fixing frame is provided with a locking device for fixing the second side of the movable blade;

It also includes a control device for controlling the second side of the movable blade to be separated from the locking device. When the movable blade enters the drain channel with the drum, the control device controls the The second side of the movable blade is separated from the locking device, and the water flow impacts the movable blade so that the second side of the movable blade abuts against the outer wall surface of the drum and forms a water blocking groove. When the movable blade comes out of the drain channel and continues to rotate, the second side of the movable blade is gradually connected with the locking device.
The water turbine according to claim 1, wherein the left side plate and the right side plate are both circular plates, and the outer circumference of the left side plate and the outer circumference of the right side plate are provided with A fixed bar, the fixed bar is parallel to the power shaft, and both ends of the fixed bar are respectively connected to the left side plate and the right side plate, and the first side of the movable blade is rotatably Connected to the fixing bar, when the second side of each movable blade is fixed with the locking device, the outer surface of each movable blade is located on the same cylindrical surface.
The water turbine according to claim 2, wherein the movable blades are metal blades, and the outer circumference of the left side plate and the outer circumference of the right side plate are spaced apart from the movable blades. A magnet corresponding to the second side, and a plurality of the magnets constitute the locking device.
The water turbine according to claim 2, wherein the control device comprises a front control rail and a control guide wheel arranged on each of the movable blades, and the control guide wheel is connected to the movable blades through the connecting rod. The outer surface of the arc-shaped deflector is connected to the water inlet, and the end of the arc-shaped deflector near the water inlet is the first end of the arc-shaped deflector, and the end of the arc-shaped deflector away from the water inlet is the arc-shaped deflector The first end of the front control rail is connected to the first end of the arc-shaped deflector, the second end of the front control rail extends toward the water inlet end, and the front control rail The distance with the power shaft gradually decreases from the second end of the front control rail to the first end of the front control rail, and the control guide wheel slides toward the second end of the front control rail The first end of the front control rail separates the second side of the movable blade from the locking device and gradually abuts against the outer wall surface of the drum.
The water turbine according to claim 4, characterized in that: the arc surface of the arc deflector for controlling the sliding of the guide wheel is adapted to the outer wall surface of the drum, and the arc deflector is in line with the The connection of the front control rail presents a smooth transition.
The water turbine according to claim 4, wherein the control device further comprises a rear control rail, the first end of the rear control rail is connected with the second end of the arc-shaped deflector, and the The connection between the rear control rail and the arc-shaped deflector presents a smooth transition, the second end of the rear control rail extends toward the side away from the water inlet end, and the rear control rail and the power shaft The distance gradually increases from the first end of the rear control rail to the second end of the rear control rail, and the control guide wheel slides along the first end of the rear control rail to the second end of the rear control rail The two ends make the second side of the movable blade separate from the drum and gradually connect with the locking device.
The water turbine according to claim 6, wherein the front control rail, the arc-shaped deflector and the rear control rail are integrally formed.
The water turbine according to any one of claims 2 to 7, wherein a plurality of movable blades are arranged in an array along the power shaft, and a plurality of supports corresponding to the movable blades are provided on the outer wall of the drum .
The water turbine according to claim 8, wherein the supporting member comprises a first supporting member and a second supporting member, the first supporting member has a linear structure, and the first end of the first supporting member It is connected perpendicularly to the outer wall of the drum, the second end of the first support is connected to the fixing strip, the outer contour of the second support is adapted to the inner wall of the movable blade, the The first end of the second support is connected with the fixing bar, and the second end of the second support is connected with the outer wall surface of the drum.
The water turbine according to any one of claims 2 to 7, wherein the fixed strip is provided with a hinge along its length, and the first side portion of the movable blade is hinged to the fixed bar through the hinge. Article.