Trash grating structure of hydropower station intake gate

Abstract

This utility model discloses a trash rack structure for a hydropower station intake gate, including a water passage gate and a gate plate. The gate plate consists of a fixed gate plate and a movable gate plate, which are fitted together and each has multiple water passage holes. A traction mechanism is provided at the top of the water passage gate. The traction mechanism includes a first rotating shaft with two first traction rope drums. The first traction rope drums have traction ropes for the movable gate plate, which pass downward through the traction mechanism and connect to the top of the movable gate plate. The movable gate plate is located on the back side of the fixed gate plate, and a cleaning mechanism is provided on the front side of the fixed gate plate. This utility model, using the above structure, can replace manual cleaning to automatically clean the trash rack and realize the recycling of debris after cleaning the gate plate panel, improving the operational reliability and economy of the hydropower station.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station equipment, specifically a trash rack structure for a hydropower station intake gate. Background Technology

[0002] As a crucial component of water resource regulation and power generation systems, the reliability of the trash rack structure in a hydropower station's intake gate directly impacts the station's operational efficiency and safety. The core function of the trash rack is to intercept floating debris, branches, weeds, silt, and other contaminants in the water flow, preventing them from entering downstream equipment such as turbines and causing blockages, wear, or malfunctions. However, existing intake gate trash racks have revealed numerous technical deficiencies during long-term operation, making it difficult to meet the demands of efficient and stable operation. For example, existing trash racks rely on manual cleaning at regular intervals, which is not only labor-intensive and inefficient, but also poses serious safety hazards in high water levels and rapid water flow environments. While some automatic cleaning devices can achieve mechanical cleaning, the cleaning components (such as brushes and scrapers) do not adhere well to the rack surface, making it difficult to remove stubborn dirt adhering to the edges of the water passages. Long-term accumulation can easily lead to blockage of the passages. Furthermore, during the cleaning process, dirt can easily fall back into the water flow, significantly reducing the cleaning effectiveness. Moreover, the movement trajectory of the existing trash rack cleaning mechanism often does not match the distribution of the water passage holes in the rack, resulting in some areas becoming cleaning dead zones. At the same time, the cleaning mechanism lacks an effective self-cleaning function, and the dirt attached to itself will re-contaminate the rack surface during operation, forming a vicious cycle. Summary of the Invention The technical problem to be solved by this utility model is to provide a trash rack structure for the intake gate of a hydropower station, which can replace manual cleaning to achieve the purpose of automatic cleaning of trash racks and realize the recycling operation of impurities after cleaning on the gate panel, thereby improving the operational reliability and economy of the hydropower station.

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a trash rack structure for a hydropower station intake gate, including a water gate and a gate plate. The gate plate is composed of a fixed gate plate and a movable gate plate, which are fitted together. Both the fixed gate plate and the movable gate plate are provided with multiple water passage holes. The top of the water gate is equipped with a traction mechanism, which includes a first rotating shaft, two first traction rope drums on the first rotating shaft, and a movable gate traction rope on the first traction rope drum. The movable gate traction rope passes downward through the traction mechanism and is connected to the top of the movable gate. The movable gate is located on the back side of the fixed gate, and a cleaning mechanism is provided on the front side of the fixed gate.

[0004] In a preferred embodiment, the traction mechanism is further provided with a second rotating shaft, on which a second traction rope drum is provided, and on which a cleaning mechanism traction rope is provided, the cleaning mechanism traction rope passing downward through the traction mechanism and connected to the cleaning mechanism.

[0005] In a preferred embodiment, a variable diameter wheel is provided on the first rotating shaft between the two first traction rope drums, and the traction rope of the cleaning mechanism pulled out from the second traction rope drum contacts the variable diameter wheel.

[0006] In a preferred embodiment, the traction mechanism is equipped with a first motor for driving the first rotating shaft, and the first motor and the first rotating shaft are connected by a synchronous belt drive. The traction mechanism is also equipped with a second motor for driving the second rotating shaft.

[0007] In a preferred embodiment, the cleaning mechanism includes a main housing, and a brush wheel is provided on the side of the main housing facing the water-facing surface of the fixed gate. The main housing of the cleaning mechanism above the brush wheel is equipped with a cleaning rod, which is inclined upwards.

[0008] In a preferred embodiment, there are multiple cleaning rods, and the lifting and lowering trajectory of a single cleaning rod is aligned with the vertical arrangement direction of the multiple single-row water passages.

[0009] In a preferred embodiment, the cleaning mechanism is equipped with a water pump, and the water pump is equipped with an inlet pipe extending to the outside of the cleaning mechanism; A water storage tank is provided on one side of the cleaning mechanism, and the water inlet pipe is located inside the water storage tank; The water pump is equipped with water outlet pipes that extend to the upper and lower sides of the brush wheel.

[0010] In a preferred embodiment, multiple movable protrusions are located near the top of the water-facing surface of the fixed gate, with each movable protrusion positioned between two adjacent water passages.

[0011] In a preferred embodiment, the fixed gate plate is provided with a horizontal T-shaped perforation, the movable protrusion is disposed in the T-shaped perforation, the water-facing surface of the movable gate plate is provided with a groove aligned horizontally with the T-shaped perforation, and one end of the movable protrusion extends into the groove; The bottom surface of the groove includes an upper vertical section and a lower inclined section.

[0012] In a preferred embodiment, a limiting plate is provided at one end of the movable protrusion, and a tension spring is sleeved on the outer wall of the movable protrusion. One end of the tension spring is fixed to the limiting plate, and the diameter of the limiting plate is the same as the large diameter portion of the T-shaped perforation. The other end of the tension spring is fixed to the bottom of the large diameter portion of the T-shaped perforation.

[0013] The trash rack structure for the intake gate of a hydropower station provided by this utility model has the following beneficial effects by adopting the above structure: (1) The gate is designed as a combination of a fixed gate and a movable gate. The movable gate is driven to rise and fall by a traction mechanism. The overlap of the two water passage holes can be adjusted in real time, thereby flexibly changing the flow area. When there is a lot of sewage or flood, the flow area is reduced to enhance the interception effect. When there is a lot of sewage or dry season, the flow area is increased to improve the water flow utilization rate. This effectively balances the sewage interception function and power generation efficiency, and avoids the problem of water head loss or resource waste caused by the fixed flow area of ​​the traditional fixed gate. (2) The inclined cleaning rod can clean the tree branches and impurities adsorbed on the water passage hole, avoiding the problem of cleaning difficulties caused by the adsorption and blockage of impurities on the water passage hole; (3) After the cleaning mechanism completes the cleaning operation, it can recycle and clean the branches and debris attached to the cleaning rod by the interlacing relative movement of the movable protruding rod and the cleaning rod, so as to avoid the cleaning mechanism from bringing the debris into the water and causing secondary blockage of the sluice gate. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the gate structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the cleaning mechanism of this utility model.

[0017] Figure 4 This is a schematic diagram of the movable protruding rod structure of this utility model when it is passing through water.

[0018] Figure 5 This is a schematic diagram of the movable protruding rod structure after the cleaning operation of this utility model is completed.

[0019] In the diagram: 1. Water gate; 2. Gate plate; 201. Fixed gate plate; 202. Movable gate plate; 203. Water passage hole; 3. Traction mechanism; 4. First rotating shaft; 4'. Second rotating shaft; 5. First traction rope drum; 501. Traction rope of movable gate plate; 6. First motor; 7. Synchronous belt; 8. Second traction rope drum; 801. Traction rope of cleaning mechanism; 9. Second motor; 10. Variable diameter wheel; 11. Cleaning mechanism; 111. Water storage tank; 12. Movable protruding rod; 121. Limiting plate; 13. Groove; 131. Vertical section; 132. Inclined section; 14. Cleaning rod; 15. Brush wheel; 16. Water pump; 161. Inlet pipe; 162. Outlet pipe; 17. Tension spring. Detailed Implementation

[0020] like Figure 1-5In a hydropower station intake gate trash rack structure, there is a water passage gate 1 and a gate plate 2. The gate plate 2 is composed of a fixed gate plate 201 and a movable gate plate 202. The fixed gate plate 201 and the movable gate plate 202 are fitted together, and both the fixed gate plate 201 and the movable gate plate 202 are provided with multiple water passage holes 203. The top of the water gate 1 is provided with a traction mechanism 3. The traction mechanism 3 includes a first rotating shaft 4. Two first traction rope drums 5 are provided on the first rotating shaft 4. A movable gate traction rope 501 is provided on the first traction rope drum 5. The movable gate traction rope 501 passes downward through the traction mechanism 3 and is connected to the top of the movable gate 202. The movable gate 202 is located on the back side of the fixed gate 201, and the cleaning mechanism 11 is provided on the front side of the fixed gate 201.

[0021] In a preferred embodiment, the traction mechanism 3 is further provided with a second rotating shaft 4', on which a second traction rope drum 8 is provided, and on which a cleaning mechanism traction rope 801 is provided, the cleaning mechanism traction rope 801 passes downward through the traction mechanism 3 and is connected to the cleaning mechanism 11.

[0022] In a preferred embodiment, a variable diameter wheel 10 is provided on the first rotating shaft 4 between the two first traction rope drums 5, and the cleaning mechanism traction rope 801 pulled out from the second traction rope drum 8 contacts the variable diameter wheel 10.

[0023] In a preferred embodiment, the traction mechanism 3 is equipped with a first motor 6 for driving the first rotating shaft 4, and the first motor 6 and the first rotating shaft 4 are driven by a synchronous belt 7. The traction mechanism 3 is also equipped with a second motor 9 for driving the second rotating shaft 4'.

[0024] In a preferred embodiment, the cleaning mechanism 11 includes a main housing, and a brush wheel 15 is provided on the side of the main housing facing the water-facing surface of the fixed gate 201; The main housing of the cleaning mechanism 11 above the brush wheel 15 is provided with a cleaning rod 14, which is inclined upward.

[0025] In a preferred embodiment, there are multiple cleaning rods 14, and the lifting and lowering trajectory of a single cleaning rod 14 is aligned with the vertical arrangement direction of the multiple single-row water passage holes 203.

[0026] In a preferred embodiment, the cleaning mechanism 11 is equipped with a water pump 16, and the water pump 16 is equipped with an inlet pipe 161 that extends to the outside of the cleaning mechanism 11; The cleaning mechanism 11 is provided with a water storage tank 111 on one side, and the water inlet pipe 161 is located inside the water storage tank 111; The water pump 16 is equipped with a water outlet pipe 162 that extends to the upper and lower sides of the brush wheel 15.

[0027] In a preferred embodiment, multiple movable protrusions 12 are located near the top of the water-facing surface of the fixed gate 201, with each movable protrusion 12 positioned between two adjacent water passages 203.

[0028] In a preferred embodiment, the fixed gate 201 is provided with a horizontal T-shaped through hole, the movable protrusion 12 is disposed in the T-shaped through hole, and the water-facing surface of the movable gate 202 is provided with a groove 13 that is horizontally aligned with the T-shaped through hole, and one end of the movable protrusion 12 extends into the groove 13. The bottom surface of the groove 13 includes an upper vertical section 131 and a lower inclined section 132.

[0029] In a preferred embodiment, one end of the movable protrusion 12 is provided with a limiting piece 121, and a tension spring 17 is sleeved on the outer wall of the movable protrusion 12. One end of the tension spring 17 is fixed on the limiting piece 121, and the diameter of the limiting piece 121 is the same as the large diameter portion of the T-shaped perforation. The other end of the tension spring 17 is fixed at the bottom of the large diameter portion of the T-shaped perforation.

[0030] The working principle of this embodiment is as follows: When it is necessary to adjust the flow area, the first motor 6 is started. The first motor 6 drives the first rotating shaft 4 to rotate through the synchronous belt 7. The first traction rope drum 5 rotates accordingly. The movable gate 202 is driven to rise or fall through the movable gate traction rope 501, changing the degree of overlap between the movable gate 202 and the water passage hole 203 on the fixed gate 201, thereby realizing the adjustment of the flow area.

[0031] When cleaning operations are required, the second motor 9 is started, which drives the second rotating shaft 4' to rotate. The second traction rope drum 8 rotates, and the cleaning mechanism 11 moves up and down along the water-facing surface of the fixed gate 201 through the traction rope 801. The cleaning rod 14 clears the branches and debris stuck between adjacent water passages 203. The water pump 16 draws water from the water storage tank 111. At the same time, the brush wheel 15 rotates to remove dirt from the grid surface, and water is sprayed through the nozzle of the water outlet pipe 162 to clean the brush wheel 15, assisting in cleaning dirt and reducing dirt residue on the brush wheel 15.

[0032] After the above-mentioned cleaning operation is completed (i.e., when the cleaning mechanism 11 moves to the uppermost position of the water-facing surface of the fixed gate 201), the movable gate 202 is pulled up. During the upward movement of the movable gate 202, the inclined section 132 of the groove 13 will push the movable protruding rod 12 through the T-shaped through hole. Then the cleaning mechanism 11 moves down, and the debris on the cleaning rod 14 can be scraped off through the movable protruding rod 12.

[0033] Throughout the above process, tension spring 17 remains in a stretched state to serve as a reset mechanism.

Claims

1. A trash rack structure of a water intake gate of a hydropower station, comprising a water passing gate (1) and a gate plate (2), characterized in that: The gate (2) consists of a fixed gate (201) and a movable gate (202). The fixed gate (201) and the movable gate (202) are fitted together, and both the fixed gate (201) and the movable gate (202) are provided with multiple water passage holes (203). The top of the water gate (1) is provided with a traction mechanism (3). The traction mechanism (3) includes a first rotating shaft (4). Two first traction rope drums (5) are provided on the first rotating shaft (4). A movable gate traction rope (501) is provided on the first traction rope drum (5). The movable gate traction rope (501) passes downward through the traction mechanism (3) and is connected to the top of the movable gate (202). The movable gate (202) is located on the back side of the fixed gate (201), and a cleaning mechanism (11) is provided on the front side of the fixed gate (201).

2. The trash rack structure of the intake gate of a hydropower station according to claim 1, characterized in that: The traction mechanism (3) is also provided with a second rotating shaft (4'), a second traction rope drum (8) is provided on the second rotating shaft (4'), and a cleaning mechanism traction rope (801) is provided on the second traction rope drum (8). The cleaning mechanism traction rope (801) passes downward through the traction mechanism (3) and is connected to the cleaning mechanism (11).

3. The trash rack structure of a water intake gate of a hydropower station according to claim 2, characterized in that: A variable diameter wheel (10) is provided on the first rotating shaft (4) between the two first traction rope drums (5), and the cleaning mechanism traction rope (801) pulled out from the second traction rope drum (8) contacts the variable diameter wheel (10).

4. The trash rack structure of a water intake gate of a hydropower station according to claim 2, characterized in that: The traction mechanism (3) is equipped with a first motor (6) for driving the first rotating shaft (4), and the first motor (6) and the first rotating shaft (4) are driven by a synchronous belt (7); The traction mechanism (3) is also equipped with a second motor (9) for driving the second rotating shaft (4').

5. The trash rack structure of a water intake gate of a hydropower station according to claim 1, characterized in that: The cleaning mechanism (11) includes a main housing, and a brush wheel (15) is provided on the side of the main housing facing the water-facing surface of the fixed gate (201). The main housing of the cleaning mechanism (11) above the brush wheel (15) is provided with a cleaning rod (14), which is inclined upward.

6. The trash rack structure of a water intake gate of a hydropower station according to claim 5, characterized in that: The cleaning rod (14) consists of multiple rods, and the lifting and lowering trajectory of a single cleaning rod (14) is aligned with the vertical arrangement direction of the multiple single-row water passage holes (203).

7. The trash rack structure of a water intake gate of a hydropower station according to claim 1, characterized in that: The cleaning mechanism (11) is equipped with a water pump (16), and the water pump (16) is equipped with an inlet pipe (161) that extends to the outside of the cleaning mechanism (11). The cleaning mechanism (11) has a water storage tank (111) on one side, and the water inlet pipe (161) is located inside the water storage tank (111); The water pump (16) is provided with water outlet pipes (162) that pass through the upper and lower sides of the brush wheel (15).

8. The trash rack structure of a water intake gate of a hydropower station according to claim 6, characterized in that: The fixed gate (201) has multiple movable protrusions (12) on the water-facing side near the top, with each movable protrusion (12) positioned between two adjacent water passages (203).

9. The trash rack structure of a water intake gate of a hydropower station according to claim 6, characterized in that: The fixed gate (201) is provided with a horizontal T-shaped through hole, and the movable protrusion (12) is set in the T-shaped through hole. The water-facing surface of the movable gate (202) is provided with a groove (13) that is horizontally aligned with the T-shaped through hole, and one end of the movable protrusion (12) extends into the groove (13). The bottom surface of the groove (13) includes an upper vertical section (131) and a lower inclined section (132).

10. The trash rack structure of a water intake gate of a hydropower station according to claim 9, characterized in that: The movable convex rod (12) is provided with a limiting sheet (121) at one end, a tension spring (17) is sleeved on the outer wall of the movable convex rod (12), one end of the tension spring (17) is fixed on the limiting sheet (121), the diameter of the limiting sheet (121) is same as the large diameter part of the T-shaped perforation, and the other end of the tension spring (17) is fixed on the bottom of the large diameter part of the T-shaped perforation.

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