A water turbine with an inlet diffusion type sand settling device

Abstract

The invention discloses a water turbine with an inlet diffusion type sand settling device, which is applied in the technical field of water turbine power generation. The invention comprises a drop pipe installed on the right side of the main engine, a water passing tank installed on the right side of the drop pipe, a connecting dam installed on the right side of the water passing tank, a sand discharge pipe installed on the bottom of the connecting dam, and the bottom of the water passing tank is connected with the sand discharge pipe. By arranging the main engine as a water turbine power generation device, the drop pipe is arranged between the main engine and the sand settling structure at a lower water level than the sand settling structure, so as to reduce the consumption of water flow potential energy, the connecting dam reduces the turbulence of the water flow, is conducive to the sedimentation of silt, and performs preliminary sedimentation and discharge of sand and gravel, the pear-shaped tank is used for further removing silt from the water flow, and at the same time, the water flow is further sunk by centrifugation to further sink high-density silt, and uniformly discharges it into the sand discharge pipe, so as to reduce the demand for electric energy in the process and reduce the demand for standing still.

Description

Technical Field

[0001] The invention belongs to the technical field of water turbine power generation, and in particular relates to a water turbine with an inlet diffusion type sand settling device. Background Art

[0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. It is a turbine machine among fluid machinery. Its impeller rotates due to the impact of water flow. The pressure of the water flow remains unchanged during operation, and it is mainly the conversion of kinetic energy. Impact turbines can be divided into two types: tangential impact turbines and oblique impact turbines according to the direction of water flow. The structure of the oblique impact turbine is basically the same as that of the Pelton turbine, except that there is an inclination in the jet direction. It is usually only used in small units. The impeller rotates in the water due to the reaction force of the water flow. The pressure energy and kinetic energy of the water flow change during operation, but it is mainly the conversion of pressure energy.

[0003] Chinese patent CN111255609B discloses a channel vortex type power generation and sand removal device and a power generation method. The device includes a volute, a sand removal funnel, a generator and a turbine. One side of the volute is connected to a water inlet channel, and an overflow trough is arranged on one side of the volute tangent to the direction of the water inlet channel. An inlet pipe is arranged at one end of the overflow trough, and the inlet pipe connects the overflow trough and a chamber where the turbine is located. The sand removal funnel is fixedly installed at the bottom of the volute, and a flow stabilizing cylinder is arranged at the upper end of the sand removal funnel. The generator is fixedly installed on the flow stabilizing cylinder, and the turbine is installed at the lower end of the generator through a transmission shaft. The power generation method is that the sediment-containing water flow separates sediment and water in the volute, the sediment flows away from the sand removal culvert, and the clean water flows into the overflow trough and is transported to the turbine through the inlet pipe, so that the potential energy of the water is converted into electrical energy. The present invention can obtain electrical energy more conveniently from a river with a large amount of sediment through structural improvement.

[0004] When the existing water turbine is in use, if it is a small or medium-sized water turbine, the sand and gravel in the water flow may cause damage to the turbine blades and pipelines and other structures. Therefore, it is necessary to initially precipitate the silt at the water inlet of the water turbine and discharge it separately. During the precipitation, the water needs to be left still, and a high-power sand discharge device is also required. Therefore, there is a large room for optimization.

[0005] Based on the above-mentioned situation, we found that it is difficult for the existing technology of water turbines to avoid the above problems at the same time. Therefore, we proposed a water turbine with an imported diffusion-type sand settling device that reduces the use of high-power electrical appliances, reduces the structure's static requirements for sand and gravel discharge, and optimizes the sand discharge effect. Summary of the invention

[0006] The purpose of the present invention is to target an existing water turbine with an inlet diffusion-type sand settling device, which has the advantages of reducing the use of high-power electrical appliances, reducing the structure's static requirements for sand and gravel discharge, and optimizing the sand discharge effect.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: A water turbine with an inlet diffusion type sand settling device comprises a main engine, a drop pipe is installed on the right side of the main engine, a water tank is installed on the right side of the drop pipe, a connecting dam is installed on the right side of the water tank, a sand discharge pipe is installed at the bottom of the connecting dam, and the bottom of the water tank is connected to the sand discharge pipe;

[0008] The water passing tank comprises a pear-shaped tank, a water swirling tank is installed inside the pear-shaped tank, an inclined plate is bolted to the inner wall of the pear-shaped tank, an integrally formed sand accumulation section is provided at the bottom of the pear-shaped tank, a sand falling section is installed at the bottom of the water swirling tank, a hydraulic cylinder is installed on the inner side of the inclined plate, the left side of the sand accumulation section is connected to the bottom of the sand falling section, a bottom plug is provided at the bottom of the inner side of the sand falling section, a blocking piece is provided at the bottom of the sand accumulation section, the top of the blocking piece is bolted to the telescopic end of the hydraulic cylinder, a connecting rod is bolted to the left side of the hydraulic cylinder, the bottom of the connecting rod is bolted to the bottom plug, and a baffle is bolted to the bottom of the inner wall of the pear-shaped tank;

[0009] The connecting dam includes a dam body, a partition is provided on the inside of the dam body, an arc-shaped concave is provided on the bottom of the partition, a water-passing plate is bolted to the top of the partition, a bottom masonry section is provided on the bottom of the dam body, the left side of the bottom masonry section is set as two bucket-shaped inclined surfaces, and the right side is set as an arc shape, and an impact pier is provided on the inner side of the dam body.

[0010] By adopting the above technical scheme, a main engine is set as a hydro-turbine power generation equipment, and a drop pipe is set between the main engine and the sand settling structure. Compared with the sand settling structure, the water is located at a lower water level, which can reduce the consumption of water potential energy, so that the water after sand settling can maintain a large kinetic energy to enter the main engine. After passing through the river channel, the water will first enter the interior of the connecting dam, and smoothly enter the sand settling tank along the diffusion dam body, reducing the turbulence of the water flow, which is conducive to the sedimentation of sediment. After being guided by the arc-shaped part of the bottom masonry section and the partition, the water will enter the bottom of the partition, most of the sand and gravel will hit the arc-shaped inner concave outside of the partition and the outer side of the pier, and fall into the sand discharge pipe along the bucket-shaped inner wall. After the initial sand removal, the water will flow into the water tank, and flow into the pear-shaped tank under the limit of the inclined plate. Because the pear-shaped tank The horizontal height is low, so it is normally full of water. After a short period of static water flow, it will fall into the sand accumulation section due to its own weight and be blocked by the baffle. The water will continue to flow and enter the vortex tank from the opening. When the stirring shaft rotates, a vortex will be generated. The remaining sediment in the water will sink into the sand falling section along the inner wall due to the centrifugal tendency and its own density. Then, the hydraulic cylinder is started periodically to lift the plugging plate and the bottom plug synchronously through the connecting rod, so that the sediment-rich water flow in the sand accumulation section and the sand falling section can be discharged into the sand discharge pipe together. At the same time, the water flow inside the sand discharge pipe can be broken. When the sediment-rich water flow in the sand discharge pipe flows normally, the sediment is directly discharged to the low water level area together, and the water with relatively less impurities in the vertical tank can be passed through the output section into the drop pipe to be supplied to the main engine.

[0011] The present invention is further configured as follows: the swirling water tank comprises a vertical tank, the top of the vertical tank is provided with an integrally formed sealing section, the outer side of the sealing section is bolted to the pear-shaped tank, the inner side of the sealing section is rotatably connected to a stirring shaft, an output section is provided on the left side of the vertical tank, and the left side of the output section is connected to the left side of the pear-shaped tank.

[0012] By adopting the above technical solution, a vertical tank is provided with a sealing section, which is used to fix and limit the stirring shaft. When the stirring shaft rotates, the water flow inside the vertical tank is stirred to keep rotating and generate a vortex, so that the mud and sand in the water flow sink along the inner wall of the vertical tank.

[0013] The present invention is further configured as follows: a driving shaft is rotatably connected to the inner side of the dam body, a wheel disc is bolted to the outer side of the driving shaft, a water blade is bolted between two adjacent wheel discs, and an overflow groove is opened on the inner side of the water pass plate.

[0014] By adopting the above technical solution, a driving shaft is set in conjunction with a wheel. When water flows down the overflow groove from the high water level area on the right side of the water pass plate, the water blades and the wheel will be pushed to rotate along the driving shaft, so as to start the driving structure and achieve energy saving effect.

[0015] The present invention is further configured as follows: a transmission shaft is transmission-connected to the rear side of the top of the stirring shaft, and the right side of the transmission shaft is transmission-connected to the driving shaft.

[0016] By adopting the above technical solution, a transmission shaft is provided to transmit the power of the driving shaft to the position of the stirring shaft to drive the stirring shaft to rotate, so as to provide power for stirring.

[0017] The present invention is further configured as follows: bevel gears are installed on the outer side of the top of the stirring shaft and the front side of the transmission shaft, the two bevel gears are meshingly connected, the outer side of the transmission shaft is rotatably connected to a shaft frame, sprockets are installed on the rear side of the transmission shaft surface and the rear side of the driving shaft, and the two sprockets are connected by chain transmission.

[0018] By adopting the above technical solution, by setting a sprocket, the power of the driving shaft can be transmitted to the position of the transmission shaft over a long distance after the chain is installed, and the output direction is changed by the meshing of the bevel gear and transmitted to the stirring shaft.

[0019] The present invention is further configured as follows: impact plates are provided on the right sides of the partition plate and the bottom masonry section, and a coarse-mouthed net is installed between the two impact plates.

[0020] By adopting the above technical solution, an impact plate is set up. When the water flow is fast or there are too many impurities, the water will contact the impact plate to avoid damage to the structure. The coarse-mouthed net can intercept large-sized impurities.

[0021] The present invention is further configured as follows: the partition plate and the right side of the bottom masonry section are both bolted with springs, the right side of the spring is bolted to the impact plate, and a drainage groove is provided on the inner side of the partition plate.

[0022] By adopting the above technical solution, a spring is set to cooperate with the impact plate. When the impact plate is subjected to impact, the spring will deform to cushion the impact plate, while providing space for the impact plate to move. The drainage groove is used to drain the water that pushes the water blade.

[0023] The present invention is further configured as follows: the right sides of the partition plate and the bottom masonry section are both bolted with telescopic rods, and the right side of the telescopic rods is bolted to the impact plate.

[0024] By adopting the above technical solution, a telescopic rod is set to limit the moving position of the impact plate, so that it is limited to horizontal movement after being subjected to force. When moving horizontally, it will push the water between the partition, the bottom masonry section and the impact plate to drain it, thereby achieving a damping and buffering effect.

[0025] The present invention is further configured as follows: an auxiliary frame is bolted to the inner wall of the sand falling section, the inner side of the auxiliary frame is rotatably connected to the stirring shaft, and a water guide sheet is installed on the inner wall of the vertical tank.

[0026] By adopting the above technical solution and providing an auxiliary frame, the bottom of the stirring shaft can be easily supported to avoid eccentric rotation or deformation when the stirring shaft is operated for a long time without maintenance.

[0027] The present invention is further configured as follows: an equipment shell is provided on the inner side of the inclined plate, the inner side of the equipment shell is fixedly connected to the hydraulic cylinder, a synchronous frame is provided on the bottom of the pear-shaped tank, both sides of the synchronous frame are respectively connected to the sand falling section and the sand accumulation section, and the synchronous frame is arranged on the outer side of the connecting rod.

[0028] By adopting the above technical solution and providing an equipment shell, the hydraulic cylinder can be easily installed and protected, and the synchronous frame is used to provide space for the connecting rod to move vertically.

[0029] In summary, the present invention has the following beneficial effects:

[0030] By setting the main engine as a hydro-turbine power generation equipment, the drop pipe set between the main engine and the sand settling structure is located at a lower water level than the sand settling structure, which can reduce the consumption of water potential energy. The connecting dam reduces the turbulence of the water flow, which is conducive to the sedimentation of sediment and the preliminary sedimentation and discharge of sand and gravel. The pear-shaped tank is used to further remove sediment from the water flow. At the same time, the high-density sediment is further sunk by centrifugation and discharged into the sand discharge pipe. The demand for electricity is reduced in the process, and the demand for standing is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the connection dam structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0034] Figure 4 It is a schematic diagram of the rear structure of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the water swirl tank of the present invention;

[0036] Figure 6 It is an internal schematic diagram of the main structure of the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the water-passing tank of the present invention;

[0038] Figure 8 It is a schematic diagram of the partition structure of the present invention;

[0039] Fig. 9 It is a schematic diagram of the structural installation position of the present invention;

[0040] Fig.10 The present invention Figure 6 A partial enlarged view of point A in the middle.

[0041] Reference numerals: 1, main engine; 2, drop pipe; 3, water tank; 301, pear-shaped tank; 302, water vortex tank; 302a, vertical tank; 302b, sealing section; 302c, stirring shaft; 302d, output section; 303, inclined plate; 304, sand accumulation section; 305, sand falling section; 306, hydraulic cylinder; 307, bottom plug; 308, plugging piece; 309, connecting rod; 310, baffle; 4, connecting dam; 401, dam body ; 402, partition; 403, water-passing plate; 404, bottom masonry section; 405, impact pier; 5, sand discharge pipe; 6, driving shaft; 7, wheel disc; 8, water blade; 9, overflow trough; 10, transmission shaft; 11, bevel gear; 12, shaft frame; 13, sprocket; 14, impact plate; 15, coarse-mouthed net; 16, spring; 17, drainage trough; 18, telescopic rod; 19, water guide plate; 20, equipment shell; 21, synchronous frame; 22, auxiliary frame. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0043] Embodiment 1:

[0044] refer to Figure 1-Figure 10 A water turbine with an inlet diffusion type sand settling device comprises a main engine 1, a drop pipe 2 is installed on the right side of the main engine 1, a water tank 3 is installed on the right side of the drop pipe 2, a connecting dam 4 is installed on the right side of the water tank 3, a sand discharge pipe 5 is installed at the bottom of the connecting dam 4, and the bottom of the water tank 3 is connected to the sand discharge pipe 5;

[0045] The connecting dam 4 includes a dam body 401, a partition 402 is provided inside the dam body 401, an arc-shaped concave is provided at the bottom of the partition 402, a water-passing plate 403 is bolted to the top of the partition 402, a bottom masonry section 404 is provided at the bottom of the dam body 401, the left side of the bottom masonry section 404 is set as two bucket-shaped inclined surfaces, and the right side is set as an arc shape, and an impact pier 405 is provided on the inside of the dam body 401. By setting the main engine 1 as a hydro-turbine power generation device, the drop pipe 2 is set between the main engine 1 and the sedimentation structure. Compared with the sedimentation structure, the water level is lower, which can reduce the consumption of water flow potential energy. The water after sedimentation can maintain a large kinetic energy and enter the main unit 1. After passing through the river channel, the water will first enter the interior of the connecting dam 4, and smoothly enter the sedimentation tank along the diffusion dam body 401, reducing the turbulence of the water flow, which is conducive to the sedimentation of silt. After being guided by the bottom masonry section 404 and the arc-shaped part of the partition 402, the water will enter the bottom of the partition 402, and most of the sand and gravel will hit the arc-shaped inner concave outside of the partition 402 and the outer side of the impact pier 405, and fall into the sand discharge pipe 5 along the bucket-shaped inner wall. After the initial sand removal, the water will flow into the water tank 3.

[0046] like Figure 3 As shown, the inner side of the dam body 401 is rotatably connected with a driving shaft 6, the outer side of the driving shaft 6 is bolted with a wheel disc 7, a water blade 8 is bolted between two adjacent wheel discs 7, and an overflow groove 9 is opened on the inner side of the water pass plate 403. By arranging the driving shaft 6 to cooperate with the wheel disc 7, when the water flows down along the overflow groove 9 from the high water level area on the right side of the water pass plate 403, the water blade 8 and the wheel disc 7 will be pushed to rotate along the driving shaft 6, so as to achieve the effect of starting the driving structure and at the same time achieve the effect of energy saving.

[0047] like Figure 6 As shown, impact plates 14 are provided on the right side of the partition 402 and the bottom masonry section 404, and a coarse-mouthed net 15 is installed between the two impact plates 14. By setting the impact plates 14, when the water flow is fast or there are too many impurities, the water will contact the impact plates 14 to avoid damage to the structure. The coarse-mouthed net 15 can intercept large-sized impurities.

[0048] like Figure 6 As shown, the right sides of the partition 402 and the bottom masonry section 404 are bolted with a spring 16, and the right side of the spring 16 is bolted to the impact plate 14. A drainage groove 17 is provided on the inner side of the partition 402. By arranging the spring 16 to cooperate with the impact plate 14, when the impact plate 14 is subjected to impact, the spring 16 will be deformed to cushion the impact plate 14, and at the same time provide space for the impact plate 14 to move. The drainage groove 17 is provided to discharge the water that pushes the water blade 8.

[0049] like Figure 6As shown, the right sides of the partition 402 and the bottom masonry section 404 are bolted with a telescopic rod 18, and the right side of the telescopic rod 18 is bolted to the impact plate 14. The telescopic rod 18 is provided to limit the moving position of the impact plate 14, so that after being subjected to force, it is limited to move only horizontally. When moving horizontally, it will push the water between the partition 402 and the bottom masonry section 404 and the impact plate 14 to drain it, thereby achieving a damping and buffering effect.

[0050] Brief description of the use process: First, when in use, the water flow will first enter the interior of the connecting dam 4 after passing through the river channel, and smoothly enter the sedimentation tank along the diffusion dam body 401, reducing the turbulence of the water flow and facilitating the sedimentation of the silt. After being guided by the bottom masonry section 404 and the arc-shaped part of the partition 402, the water flow will enter the bottom of the partition 402, most of the sand and gravel will hit the arc-shaped inner concave outside of the partition 402 and the outer side of the impact pier 405, and fall into the sand discharge pipe 5 along the bucket-shaped inner wall. After the initial sand removal, the water will flow into the water tank 3. The driving shaft 6 cooperates with the wheel 7. When the water flows down from the high water level area on the right side of the water plate 403 along the overflow groove 9, it will push the water blade 8 and the wheel 7 to rotate along the driving shaft 6. The drop pipe 2 set between the main machine 1 and the sedimentation structure is located at a lower water level than the sedimentation structure, which can reduce the consumption of water potential energy, so that the water after sedimentation can maintain a large kinetic energy and enter the main machine 1.

[0051] Embodiment 2:

[0052] refer to Figure 1-Figure 7 A water turbine with an inlet diffusion type sand settling device comprises a main engine 1, a drop pipe 2 is installed on the right side of the main engine 1, a water tank 3 is installed on the right side of the drop pipe 2, a connecting dam 4 is installed on the right side of the water tank 3, a sand discharge pipe 5 is installed at the bottom of the connecting dam 4, and the bottom of the water tank 3 is connected to the sand discharge pipe 5;

[0053] The water passing tank 3 comprises a pear-shaped tank 301, a water swirling tank 302 is installed on the inner side of the pear-shaped tank 301, an inclined plate 303 is bolted to the inner wall of the pear-shaped tank 301, an integrally formed sand accumulation section 304 is provided at the bottom of the pear-shaped tank 301, a sand falling section 305 is installed at the bottom of the water swirling tank 302, a hydraulic cylinder 306 is installed on the inner side of the inclined plate 303, the left side of the sand accumulation section 304 is connected to the bottom of the sand falling section 305, a bottom plug 307 is provided at the bottom of the inner side of the sand falling section 305, a blocking piece 308 is provided at the bottom of the sand accumulation section 304, the top of the blocking piece 308 is bolted to the telescopic end of the hydraulic cylinder 306, a connecting rod 309 is bolted to the left side of the hydraulic cylinder 306, the bottom of the connecting rod 309 is bolted to the bottom plug 307, and a baffle 310 is bolted to the bottom of the inner wall of the pear-shaped tank 301;

[0054] After the initial sand removal, the water will flow into the water tank 3, and flow into the pear-shaped tank 301 under the limit of the inclined plate 303. Because the horizontal height of the pear-shaped tank 301 is relatively low, it is normally full of water. After a short period of static water flow, it will fall into the sand accumulation section 304 due to its own weight and be blocked by the baffle plate 310. The water flow will continue to flow and enter the vortex tank 302 from the opening. When the stirring shaft 302c rotates, a vortex will be generated. The remaining sediment in the water will have a larger density due to the centrifugal tendency, so it will flow along the The inner wall of the vertical tank 302a sinks into the sand falling section 305, and then the hydraulic cylinder 306 is periodically started to synchronously lift the blocking piece 308 and the bottom plug 307 through the connecting rod 309, so that the sediment-rich water flow in the sand accumulation section 304 and the sand falling section 305 is discharged into the sand discharge pipe 5 together, and at the same time, the water flow inside the sand discharge pipe 5 can be broken. When the sediment-rich water flow in the sand discharge pipe 5 flows normally, the sediment is directly discharged to the low water level area together, and the water with relatively less impurities in the vertical tank 302a can be supplied to the main engine 1 through the output section 302d into the drop pipe 2.

[0055] like Figure 7 As shown, the swirling water tank 302 includes a vertical tank 302a, the top of the vertical tank 302a is provided with an integrally formed sealing section 302b, the outer side of the sealing section 302b is bolted to the pear-shaped tank 301, the inner side of the sealing section 302b is rotatably connected with a stirring shaft 302c, an output section 302d is provided on the left side of the vertical tank 302a, and the left side of the output section 302d is connected to the left side of the pear-shaped tank 301, and the vertical tank 302a is provided with the sealing section 302b, and the sealing section 302b is used to fix and limit the stirring shaft 302c, and when the stirring shaft 302c rotates, the water flow inside the vertical tank 302a is stirred to keep rotating and generate a vortex, so that the sediment in the water flow sinks along the inner wall of the vertical tank 302a.

[0056] like Figure 4 As shown, the rear side of the top of the stirring shaft 302c is connected to the transmission shaft 10, and the right side of the transmission shaft 10 is connected to the driving shaft 6. The transmission shaft 10 is set to transmit the power of the driving shaft 6 to the position of the stirring shaft 302c to drive the stirring shaft 302c to rotate, so as to provide power for stirring.

[0057] like Figure 2 As shown, bevel gears 11 are installed on the outer side of the top of the stirring shaft 302c and the front side of the transmission shaft 10, and the two bevel gears 11 are meshed and connected. The outer side of the transmission shaft 10 is rotatably connected with a shaft frame 12, and sprockets 13 are installed on the rear side of the surface of the transmission shaft 10 and the rear side of the driving shaft 6. The two sprockets 13 are connected by chain transmission. By setting the sprockets 13, after the chain is installed, the power of the driving shaft 6 can be transmitted to the position of the transmission shaft 10 over a long distance, and the meshing of the bevel gears 11 changes the output direction and transmits it to the stirring shaft 302c.

[0058] like Figure 7 As shown, the inner wall of the sand falling section 305 is bolted with an auxiliary frame 22, the inner side of the auxiliary frame 22 is rotatably connected to the stirring shaft 302c, and the inner wall of the vertical tank 302a is installed with a water guide plate 19. By setting the auxiliary frame 22, the bottom of the stirring shaft 302c can be easily supported to avoid eccentric rotation or deformation when it is in operation for a long time without maintenance.

[0059] like Figure 6 As shown, an equipment shell 20 is provided on the inner side of the inclined plate 303, and the inner side of the equipment shell 20 is fixedly connected to the hydraulic cylinder 306. A synchronous frame 21 is provided on the bottom of the pear-shaped tank 301. The two sides of the synchronous frame 21 are respectively connected to the sand falling section 305 and the sand accumulation section 304. The synchronous frame 21 is arranged on the outer side of the connecting rod 309. By setting the equipment shell 20, the hydraulic cylinder 306 can be easily installed and protected. The synchronous frame 21 is used to provide space for the connecting rod 309 to move vertically.

[0060] Brief description of the use process: When in use, the water after the initial sand removal through the connecting dam 4 will flow into the water tank 3, and flow into the pear-shaped tank 301 under the limit of the inclined plate 303. Because the horizontal height of the pear-shaped tank 301 is relatively low, it is normally full of water. After a short period of static water flow, it will fall into the sand accumulation section 304 due to its own weight and be blocked by the baffle 310. The water flow will continue to flow and enter the vortex tank 302 from the opening. When the stirring shaft 302c rotates, a vortex will be generated, and the remaining mud and sand in the water will be dense due to the centrifugal tendency. The water in the vertical tank 302a with relatively less impurities can be supplied to the main engine 1 through the output section 302d and then passed into the drop pipe 2 to generate electricity.

[0061] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A water turbine with an inlet diffusion type sand settling device, comprising a main engine (1), characterized in that: A drop pipe (2) is installed on the right side of the main machine (1), a water tank (3) is installed on the right side of the drop pipe (2), a connecting dam (4) is installed on the right side of the water tank (3), a sand discharge pipe (5) is installed at the bottom of the connecting dam (4), and the bottom of the water tank (3) is connected to the sand discharge pipe (5); The water passing tank (3) comprises a pear-shaped tank (301), a water swirling tank (302) is installed inside the pear-shaped tank (301), an inclined plate (303) is bolted to the inner wall of the pear-shaped tank (301), an integrally formed sand accumulation section (304) is provided at the bottom of the pear-shaped tank (301), a sand falling section (305) is installed at the bottom of the water swirling tank (302), a hydraulic cylinder (306) is installed inside the inclined plate (303), the left side of the sand accumulation section (304) is connected to the bottom of the sand falling section (305), and the sand falling section (305) is provided with a hydraulic cylinder (306). A bottom plug (307) is provided at the bottom of the inner side of the hydraulic cylinder (305), a blocking piece (308) is provided at the bottom of the sand accumulation section (304), the top of the blocking piece (308) is bolted to the telescopic end of the hydraulic cylinder (306), a connecting rod (309) is bolted to the left side of the hydraulic cylinder (306), the bottom of the connecting rod (309) is bolted to the bottom plug (307), a baffle (310) is bolted to the bottom of the inner wall of the pear-shaped tank (301), the water flow in the pear-shaped tank (301) continues to flow and enters the water vortex tank (302) from the opening thereof; The connecting dam (4) comprises a dam body (401), a partition (402) is provided inside the dam body (401), an arc-shaped concave is provided at the bottom of the partition (402), a water-passing plate (403) is bolted to the top of the partition (402), a bottom masonry section (404) is provided at the bottom of the dam body (401), the left side of the bottom masonry section (404) is provided with two inclined surfaces forming a bucket shape, and the right side is provided in an arc shape, and an impact pier (405) is provided inside the dam body (401); The water spinning tank (302) comprises a vertical tank (302a), the top of the vertical tank (302a) is provided with an integrally formed sealing section (302b), the outer side of the sealing section (302b) is bolted to the pear-shaped tank (301), the inner side of the sealing section (302b) is rotatably connected to a stirring shaft (302c), the left side of the vertical tank (302a) is provided with an output section (302d), and the left side of the output section (302d) is connected to the left side of the pear-shaped tank (301); The inner side of the dam body (401) is rotatably connected to a driving shaft (6), the outer side of the driving shaft (6) is bolted to a wheel disc (7), a water blade (8) is bolted between two adjacent wheel discs (7), and an overflow groove (9) is provided on the inner side of the water-passing plate (403); The rear side of the top of the stirring shaft (302c) is transmission-connected to a transmission shaft (10), and the right side of the transmission shaft (10) is transmission-connected to a driving shaft (6).

2. A water turbine with an inlet diffusion type sand settling device according to claim 1, characterized in that: The outer side of the top of the stirring shaft (302c) and the front side of the transmission shaft (10) are both installed with a bevel gear (11), and the two bevel gears (11) are meshingly connected. The outer side of the transmission shaft (10) is rotatably connected to a shaft frame (12). The rear side of the surface of the transmission shaft (10) and the rear side of the driving shaft (6) are both installed with a sprocket (13), and the two sprockets (13) are connected via a chain transmission.

3. A water turbine with an inlet diffusion type sand settling device according to claim 1, characterized in that: The partition plate (402) and the right side of the bottom masonry section (404) are both provided with impact plates (14), and a coarse-mouthed net (15) is installed between the two impact plates (14).

4. The water turbine with an inlet diffusion type sand settling device according to claim 1, characterized in that: The right sides of the partition plate (402) and the bottom masonry section (404) are both bolted with a spring (16), the right side of the spring (16) is bolted to the impact plate (14), and a drainage groove (17) is provided on the inner side of the partition plate (402).

5. The water turbine with an inlet diffusion type sand settling device according to claim 1, characterized in that: The right sides of the partition plate (402) and the bottom masonry section (404) are both bolted with a telescopic rod (18), and the right side of the telescopic rod (18) is bolted to the impact plate (14).

6. The water turbine with an inlet diffusion type sand settling device according to claim 1, characterized in that: An auxiliary frame (22) is bolted to the inner wall of the sand falling section (305), the inner side of the auxiliary frame (22) is rotatably connected to the stirring shaft (302c), and a water guide sheet (19) is installed on the inner wall of the vertical tank (302a).

7. The water turbine with an inlet diffusion type sand settling device according to claim 1, characterized in that: An equipment shell (20) is provided on the inner side of the inclined plate (303), and the inner side of the equipment shell (20) is fixedly connected to the hydraulic cylinder (306). A synchronous frame (21) is provided on the bottom of the pear-shaped tank (301), and two sides of the synchronous frame (21) are respectively connected to the sand falling section (305) and the sand accumulation section (304), and the synchronous frame (21) is arranged on the outer side of the connecting rod (309).

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