Sand discharging device of hydroelectric power plant
By designing a cleaning structure and a quick sand discharge structure in the sand discharge device of the hydropower station, the problems of easy blockage and sand accumulation of existing devices are solved, and the water flow is smooth and the normal operation of the water inlet is achieved.
Patent Information
- Application Number
- CN202421094268.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The sand discharge devices of existing hydropower stations are prone to blockage during long-term use, resulting in blockage of water flow and reduced water inlet volume, and the sand particles cannot be effectively removed, resulting in siltation of the water inlet and affecting operation.
A sand discharge device including a cleaning structure and a rapid sand discharge structure is designed. The cleaning structure automatically cleans up the blockage of the filter mesh hole through the cooperation of springs and mounting strips; the rapid sand discharge structure quickly discharges sand particles through the inclined sand pile trough and the inclined sand discharge trough, and accelerates the discharge rate through the agitating block and the agitating curtain.
It effectively prevents the filter net from being blocked, keeps the water flow unobstructed, avoids the reduction of the amount of water inlet, and prevents the siltation of the water inlet by quickly discharged sand, ensuring the normal operation of the hydropower station.
Smart Images
Figure CN222557578U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydroelectric power stations, in particular to a sand discharge device of a hydroelectric power station. Background Art
[0002] A hydroelectric power station is a power station that uses the kinetic energy of a strong water flow generated by a water level difference to generate electricity. It is referred to as a "hydropower station". It is an industrial enterprise that uses the water energy of a river to drive a turbine to drive a generator set to generate electricity.
[0003] Since the water flow is prone to carry sand, which can easily have a certain impact on the power generation equipment, and even cause damage to the power generation equipment in serious cases, it is necessary to intercept and remove the sand in the water flow at the water inlet of the hydropower station to avoid congestion. At this time, a sand removal device is needed to intercept and remove the sand entering the water inlet of the hydropower station.
[0004] However, the sand discharge device of the hydroelectric power station currently used has the following defects:
[0005] First, the sand removal device currently used in the hydroelectric power station intercepts sand in the water flow through a filter, but no cleaning structure is set on the filter, which makes the filter easy to get clogged after long-term use, blocking the water flow through the filter and reducing the water intake of the hydroelectric power station; second, the sand removal device currently used in the hydroelectric power station cannot effectively remove the intercepted sand, resulting in the accumulation of sand and siltation of the water inlet of the hydroelectric power station, affecting the operation of the hydroelectric power station. Utility Model Content
[0006] The purpose of the utility model is to provide a sand discharge device for a hydroelectric power station to solve the problem proposed in the above background technology that the sand discharge device currently used in the hydroelectric power station has no cleaning structure on the filter screen, so that the filter screen is prone to clogging after long-term use, blocking the water flow through the filter screen and reducing the water intake of the hydroelectric power station.
[0007] To achieve the above purpose, the utility model provides the following technical solution: a sand discharge device for a hydroelectric power station, comprising:
[0008] A main body of a hydroelectric power station, wherein a water inlet is provided at the water inlet of the main body of the hydroelectric power station, and inner walls on both sides of the water inlet are provided with limit slide grooves, one end of the two limit slide grooves are respectively slidably connected to the two ends of a filter plate through a first connecting plate, and a plurality of filter mesh holes are evenly provided on one side of the filter plate;
[0009] The middle parts of one side of the two first connecting plates are fixedly connected to the middle parts of the two ends of one side of the cleaning structure through springs respectively. The cleaning structure includes two second connecting plates, and a plurality of mounting strips are fixedly arranged between the two second connecting plates. A plurality of cleaning needles are evenly arranged on one side of the plurality of mounting strips, and the positions of the cleaning needles are arranged one-to-one correspondingly to the positions of the filter mesh holes.
[0010] As a preferred technical solution of the utility model, positioning rods are fixedly provided at both ends of one side of the two second connecting plates, and one end of the four positioning rods is respectively connected to the two ends of one side of the two first connecting plates through positioning holes.
[0011] As a preferred technical solution of the utility model, a quick sand discharge structure is fixedly arranged on one side of the bottom end of the water inlet, and the quick sand discharge structure includes an inclined sand stacking trough, and the inclined sand stacking trough is located below the filter plate, and an inclined sand discharge groove is opened at the bottom end of the inner wall of one end of the inclined sand stacking trough.
[0012] As a preferred technical solution of the utility model, the bottoms of the inner walls on both sides of the inclined sand pile trough are rotatably connected to the two ends of the rotating rod respectively, and four pushing plates are evenly arranged at both ends of the outer wall of the rotating rod.
[0013] As a preferred technical solution of the utility model, a plurality of stirring blocks are evenly sleeved on the middle part of the outer wall of the rotating rod, a stirring curtain is fixedly provided at the bottom ends of the plurality of stirring blocks, and the bottom end of the stirring curtain is in contact and connected with the bottom end of the inclined sand trough.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] 1. By setting up the cleaning structure, when the filter mesh holes on the filter plate are blocked, the impact of the water flow on the filter plate will increase, and the spring will be further compressed. At this time, the cleaning needle on the mounting bar will penetrate into the corresponding filter mesh holes to clean the mud and sand blocking the filter mesh holes, which is easy to operate.
[0016] 2. By setting up a rapid sand discharge structure, the sand blocked by the filter plate falls into the inclined sand trough, and due to the inclination of the inclined sand trough and the inclined sand discharge trough, the sand falling into the inclined sand trough will quickly slide out through the inclined sand discharge trough, and at the same time, the water flow drives the push plate to rotate, so as to drive the stirring block and the stirring curtain on the rotating rod to rotate, so as to speed up the discharge rate of the sand on the inclined sand trough again, so as to prevent the accumulation of sand and cause siltation at the water inlet of the hydropower station, thereby ensuring the operation of the hydropower station. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2It is a structural schematic diagram of the cleaning structure of the utility model;
[0019] Figure 3 It is an enlarged view of point A of the present utility model.
[0020] In the figure: 1. main body of the hydroelectric power station; 2. water inlet; 3. filter plate; 4. rapid sand discharge structure; 5. filter mesh; 6. first connecting plate; 7. cleaning structure; 8. spring; 9. positioning rod; 10. positioning hole; 11. second connecting plate; 12. mounting strip; 13. cleaning needle; 14. limiting slide; 15. inclined sand discharge slot; 16. inclined sand accumulation slot; 17. rotating rod; 18. pushing plate; 19. stirring block; 20. stirring curtain. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-3 The utility model provides a technical solution for a sand discharge device of a hydroelectric power station:
[0023] Embodiment 1:
[0024] according to Figure 1 and Figure 2As shown, it comprises: a main body 1 of a hydroelectric power station, a water inlet 2 is provided at the water inlet of the main body 1 of the hydroelectric power station, and limiting slide grooves 14 are provided on the inner walls on both sides of the water inlet 2, and one end of the two limiting slide grooves 14 is slidably connected to the two ends of the filter plate 3 through the first connecting plate 6 respectively, and a plurality of filter mesh holes 5 are evenly provided on one side of the filter plate 3, and the filter mesh holes 5 on the filter plate 3 filter and block the sand particles in the flowing water entering the water inlet 2, and the middle part of one side of the two first connecting plates 6 is fixedly connected to the middle part of the two ends of one side of the cleaning structure 7 through the spring 8 respectively, and the cleaning structure 7 comprises two second connecting plates 11, and a plurality of mounting strips 12 are fixedly arranged between the two second connecting plates 11, and one side of the plurality of mounting strips 12 is evenly provided A plurality of cleaning needles 13 are provided, and the positions of the cleaning needles 13 are arranged in a one-to-one correspondence with the positions of the filter mesh holes 5. When the filter mesh holes 5 on the filter plate 3 are blocked, the impact of the water flow on the filter plate 3 increases, and the spring 8 will be further compressed at this time. At this time, the cleaning needles 13 on the mounting strip 12 will penetrate into the corresponding filter mesh holes 5 to clean the mud and sand blocked in the filter mesh holes 5. The operation is simple. Positioning rods 9 are fixedly provided at both ends of one side of the two second connecting plates 11, and one end of the four positioning rods 9 is respectively connected with the two ends of one side of the two first connecting plates 6 through the positioning holes 10. The positioning rods 9 and the positioning holes 10 cooperate with each other to enable the filter plate 3 to move smoothly backward to prevent the filter mesh holes 5 from being misaligned with the cleaning needles 13.
[0025] When in use, water flows into the water inlet 2 of the main body 1 of the hydroelectric power station, and the filter plate 3 filters the flowing water entering the water inlet 2. The filter mesh holes 5 on the filter plate 3 filter out the sand in the flowing water, and the filtered flowing water enters the power generation equipment. After the filter plate 3 is used for a long time, the filter mesh holes 5 on the filter plate 3 will be partially blocked by sand. At this time, the flowing water will increase the pressure on the filter plate 3, and the filter plate 3 will compress the spring 8 after being subjected to a greater pressure, and move smoothly backward along the limiting slide groove 14 through the positioning rod 9 and the positioning hole 10. After moving to a certain position, the cleaning needle 13 on the mounting bar 12 will penetrate into the corresponding filter mesh hole 5 to clean the mud and sand blocking the filter mesh hole 5. After the sand in the filter mesh hole 5 is cleaned, the pressure of the flowing water on the filter plate 3 is reduced, and the filter plate 3 returns to its initial position under the action of the spring 8.
[0026] Embodiment 2:
[0027] Based on the first embodiment, Figure 1 and Figure 3As shown, a quick sand discharge structure 4 is fixedly arranged on one side of the bottom end of the water inlet 2, and the quick sand discharge structure 4 includes an inclined sand stacking trough 16, and the inclined sand stacking trough 16 is located below the filter plate 3, and an inclined sand discharge slot 15 is opened at the bottom end of the inner wall of one end of the inclined sand stacking trough 16. Due to the inclination of the inclined sand stacking trough 16 and the inclined sand discharge slot 15, the sand particles falling into the inclined sand stacking trough 16 will quickly slide out through the inclined sand discharge slot 15, and the bottoms of the inner walls on both sides of the inclined sand stacking trough 16 are rotatably connected to the two ends of the rotating rod 17 respectively, and the two ends of the outer wall of the rotating rod 17 are Four pushing plates 18 are evenly arranged, and a plurality of stirring blocks 19 are evenly sleeved on the middle part of the outer wall of the rotating rod 17. A stirring curtain 20 is fixedly arranged at the bottom ends of the plurality of stirring blocks 19, and the bottom end of the stirring curtain 20 is in contact with the bottom end of the inclined sand trough 16. At the same time, the water flow drives the pushing plate 18 to rotate, so as to drive the stirring blocks 19 and the stirring curtain 20 on the rotating rod 17 to rotate, so as to accelerate the discharge rate of the sand on the inclined sand trough 16 again, so as to prevent the accumulation of sand and cause siltation at the water inlet 2 of the hydropower station, thereby ensuring the operation of the hydropower station.
[0028] When in use, the sand blocked by the filter plate 3 falls into the inclined sand accumulation trough 16. Due to the inclination of the inclined sand accumulation trough 16 and the inclined sand discharge trough 15, the sand falling into the inclined sand accumulation trough 16 will quickly slide out through the inclined sand discharge trough 15. At the same time, the water flow drives the push plate 18 to rotate, thereby driving the stirring block 19 and the stirring curtain 20 on the rotating rod 17 to rotate, so as to speed up the discharge of the sand on the inclined sand accumulation trough 16 again.
[0029] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0030] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A sand discharge device for a hydroelectric power station, comprising: A hydroelectric power station body (1), characterized in that: a water inlet (2) is provided at the water inlet of the hydroelectric power station body (1), and the inner walls on both sides of the water inlet (2) are provided with limit slide grooves (14), one end of the two limit slide grooves (14) is respectively slidably connected to the two ends of the filter plate (3) through a first connecting plate (6), and a plurality of filter mesh holes (5) are evenly provided on one side of the filter plate (3); The middle parts of one side of the two first connecting plates (6) are fixedly connected to the middle parts of the two ends of one side of the cleaning structure (7) through springs (8), respectively. The cleaning structure (7) comprises two second connecting plates (11), a plurality of mounting strips (12) are fixedly arranged between the two second connecting plates (11), a plurality of cleaning needles (13) are evenly arranged on one side of the plurality of mounting strips (12), and the positions of the cleaning needles (13) are arranged in a one-to-one correspondence with the positions of the filter mesh holes (5).
2. A sand discharge device for a hydroelectric power station according to claim 1, characterized in that: Positioning rods (9) are fixedly provided at both ends of one side of the two second connecting plates (11), and one end of the four positioning rods (9) is respectively connected to both ends of one side of the two first connecting plates (6) through positioning holes (10).
3. The sand discharge device of a hydroelectric power station according to claim 1, characterized in that: A quick sand discharge structure (4) is fixedly provided on one side of the bottom end of the water inlet (2), the quick sand discharge structure (4) comprising an inclined sand accumulation groove (16), and the inclined sand accumulation groove (16) is located below the filter plate (3), and an inclined sand discharge through groove (15) is provided at the bottom end of the inner wall of one end of the inclined sand accumulation groove (16).
4. A sand discharge device for a hydroelectric power station according to claim 3, characterized in that: The bottoms of the inner walls on both sides of the inclined sand trough (16) are rotatably connected to the two ends of the rotating rod (17), and four pushing plates (18) are evenly arranged at both ends of the outer wall of the rotating rod (17).
5. A sand discharge device for a hydroelectric power station according to claim 4, characterized in that: A plurality of stirring blocks (19) are evenly sleeved on the middle of the outer wall of the rotating rod (17), and a stirring curtain (20) is fixedly arranged at the bottom ends of the plurality of stirring blocks (19), and the bottom end of the stirring curtain (20) is in contact with and connected to the bottom end of the inclined sand trough (16).