Water diversion system of hydropower station

Abstract

The water diversion system comprises a dam, a water inlet is formed in the middle of one side of the dam, the water outlet end of the water inlet is fixedly communicated with a water diversion channel, the water outlet end of the water diversion channel is fixedly communicated with the water inlet end of a pressure forebay, and the water outlet end of the pressure forebay is fixedly communicated with the water inlet end of a pressure regulating chamber. The water outlet end of the pressure regulating chamber is fixedly communicated with a flow velocity strengthening structure, the flow velocity strengthening structure comprises a booster pump, and the water outlet end of the booster pump is fixedly communicated with the water inlet end of the inclined pressure pipeline. Meanwhile, the inclined pressure pipeline is obliquely arranged, the flow speed of water flow in the inclined pressure pipeline can be increased, finally, the flow speed of the water flow is increased through the gradually-decreased channel and the speed increasing ring, the ultrahigh flow speed of the water flow can enable the power generation amount of the generator wheel to achieve the optimal effect, and then the practicability of the water diversion system of the hydropower station is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower stations, in particular to a water diversion system of a hydropower 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] The water diversion system of a hydropower station is a general term for water intake and water delivery structures that divert water from reservoirs or rivers to turbines. Depending on the type of hydropower station and the terrain and geological conditions, the water diversion system includes parts of the hydropower station's water inlet, diversion channel, pressure forebay, surge chamber, and pressure pipeline.

[0004] However, the water diversion system of the hydropower station currently has the following defects:

[0005] First, the inclined pressure pipes in the water diversion system of the current hydropower station are all set to a straight structure, but this structure cannot speed up the flow rate of the water in the inclined pressure pipes, resulting in the power generation of the generator wheel not reaching the optimal effect, which in turn reduces the practicality of the water diversion system of the hydropower station; second, the filtration structure in the water diversion channel of the current hydropower station's water diversion system needs maintenance after long-term use, but because the filtration structure is welded in the water diversion channel, it is inconvenient to disassemble, which makes it inconvenient to maintain the filtration structure in the later stage. Utility Model Content

[0006] The purpose of the utility model is to provide a water diversion system for a hydropower station, so as to solve the problem proposed in the above background technology that the water diversion channel in the water diversion system of the current hydropower station is a linear structure, but this structure cannot speed up the flow rate of the water flow in the water diversion channel, resulting in the power generation of the generator wheel failing to achieve the optimal effect, thereby reducing the practicality of the water diversion system of the hydropower station.

[0007] To achieve the above purpose, the utility model provides the following technical solution: a water diversion system for a hydropower station, comprising:

[0008] A dam, wherein a water inlet is provided in the middle of one side of the dam, a water outlet of the water inlet is fixedly connected to a water diversion channel, a water outlet of the water diversion channel is fixedly connected to a water inlet of a pressure fore pool, a water outlet of the pressure fore pool is fixedly connected to a water inlet of a pressure regulating chamber, and a water outlet of the pressure regulating chamber is fixedly connected to a flow velocity enhancement structure;

[0009] The flow rate enhancement structure includes a booster pump, the water outlet end of the booster pump is fixedly connected to the water inlet end of the inclined pressure pipe, a gradually decreasing channel is opened inside the inclined pressure pipe, and the inner wall of the gradually decreasing channel is sequentially provided with a plurality of speed increasing rings with gradually decreasing diameters.

[0010] As a preferred technical solution of the utility model, a detachable filter structure is snap-connected on one side of the top of the water channel, and the detachable filter structure includes two limiting slide grooves, and one end of the two limiting slide grooves is slidably connected to one end of two limiting clamping plates respectively.

[0011] As a preferred technical solution of the utility model, the middle parts of the top ends of the two limit clamping plates are respectively fixedly connected to the two sides of the bottom end of the connecting plate.

[0012] As a preferred technical solution of the utility model, connecting grooves are provided at both ends of one side of the two limit clamps, one end of the four connecting grooves is respectively slidably connected to one end of four connecting sliders, and the middle part of one side of the four connecting sliders is respectively fixedly connected to the two sides of the two filter nets.

[0013] As a preferred technical solution of the utility model, a speed-increasing switch is fixedly provided on one side of the pressure regulating chamber, and the booster pump is electrically connected to an external power supply through the speed-increasing switch.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting up a flow rate enhancement structure, the booster pump can increase the flow rate of water entering the inclined pressure pipe. At the same time, the inclined pressure pipe itself is inclined, which can also speed up the flow rate of the water inside it. Finally, the water flow rate is accelerated through a gradually decreasing channel and a speed increasing ring. The ultra-high water flow rate can achieve the optimal power generation effect of the generator wheel, thereby effectively improving the practicality of the water diversion system of the hydropower station.

[0016] 2. By setting up a detachable filtering structure, the limit card can be taken out through the limit slide, and the filter screen and the connecting slider can be taken out through the connecting slide, which is easy to disassemble and convenient for the later maintenance of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the inclined pressure pipeline 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. Dam; 2. Water inlet; 3. Water diversion channel; 4. Pressure fore pool; 5. Pressure regulating chamber; 6. Booster pump; 7. Inclined pressure pipe; 8. Flow velocity enhancement structure; 9. Gradually decreasing channel; 10. Speed ​​increasing ring; 11. Removable filter structure; 12. Limiting slide; 13. Limiting card plate; 14. Connecting plate; 15. Connecting slide; 16. Connecting slider; 17. Filter net. 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 water diversion system of a hydropower station:

[0023] Embodiment 1:

[0024] according to Figure 1 and Figure 2 As shown, it comprises: a dam 1, a water inlet 2 is provided in the middle of one side of the dam 1, a water outlet end of the water inlet 2 is fixedly connected with a water diversion channel 3, a water outlet end of the water diversion channel 3 is fixedly connected with a water inlet end of a pressure fore pool 4, a water outlet end of the pressure fore pool 4 is fixedly connected with a water inlet end of a pressure regulating chamber 5, a flow velocity enhancement structure 8 is fixedly connected with the water outlet end of the pressure regulating chamber 5, the flow velocity enhancement structure 8 comprises a booster pump 6, a water outlet end of the booster pump 6 is fixedly connected with a water inlet end of an inclined pressure pipe 7, a gradually decreasing channel 9 is provided inside the inclined pressure pipe 7, and a gradually decreasing channel 9 is provided inside the inclined pressure pipe 7. The inner wall is sequentially provided with a plurality of speed-increasing rings 10 with gradually decreasing diameters, a speed-increasing switch is fixedly provided on one side of the pressure regulating chamber 5, and the booster pump 6 is electrically connected to the external power supply through the speed-increasing switch. The booster pump 6 can enhance the flow rate of water entering the inclined pressure pipe 7. At the same time, the inclined pressure pipe 7 itself is inclined, which can also accelerate the flow rate of the water flow inside it. Finally, the water flow rate is accelerated through the gradually decreasing channel 9 and the speed-increasing ring 10. The ultra-high water flow rate can achieve the optimal effect on the power generation of the generator wheel, thereby effectively improving the practicality of the water diversion system of the hydropower station.

[0025] When in use, water in the reservoir flows into the pressure forepool 4 through the water inlet 2 and the water diversion channel 3. The water in the pressure forepool 4 is then pressurized by the pressure regulating chamber 5 and the booster pump 6 and enters the inclined pressure pipe 7. The water flow entering the inclined pressure pipe 7 can be accelerated due to the inclined setting of the inclined pressure pipe 7 itself. At the same time, the water flow can also be accelerated through the gradually decreasing channel 9 and the speed increasing ring 10. Finally, the ultra-high-speed water flow impacts the generator wheel to generate electricity.

[0026] Embodiment 2:

[0027] Based on the first embodiment, Figure 1 and 3 As shown, a detachable filtering structure 11 is snap-connected on one side of the top of the water diversion channel 3. The detachable filtering structure 11 includes two limiting slide grooves 12, one end of the two limiting slide grooves 12 is respectively slidably connected to one end of two limiting card plates 13, and the limiting card plates 13 can be taken out through the limiting slide grooves 12. The middle parts of the top ends of the two limiting card plates 13 are respectively fixedly connected to the two sides of the bottom end of the connecting plate 14, and the connecting plate 14 can connect the two limiting card plates 13 so that the two limiting card plates 13 can be taken out at the same time. Connecting slide grooves 15 are provided at both ends of one side of the two limiting card plates 13, one end of the four connecting slide grooves 15 is respectively slidably connected to one end of four connecting sliders 16, and the middle parts of one side of the four connecting sliders 16 are respectively fixedly connected to the two sides of the two filter screens 17, and the filter screen 17 and the connecting slider 16 can be taken out through the connecting slide grooves 15. The disassembly is simple, which can facilitate the maintenance of the filter screen 17 in the later stage.

[0028] During use, when the filter 17 needs to be maintained, first take out the two limiting card plates 13 and the connecting plate 14 through the limiting slide groove 12, then take out the filter 17 and the connecting slider 16 from the limiting card plate 13 through the connecting slide groove 15, and finally perform maintenance operations on the disassembled limiting card plates 13, connecting plates 14 and filter 17.

[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 water diversion system for a hydropower station, comprising: A dam (1), characterized in that: a water inlet (2) is provided in the middle of one side of the dam (1); the water outlet of the water inlet (2) is fixedly connected to a water diversion channel (3); the water outlet of the water diversion channel (3) is fixedly connected to the water inlet of a pressure fore pool (4); the water outlet of the pressure fore pool (4) is fixedly connected to the water inlet of a pressure regulating chamber (5); the water outlet of the pressure regulating chamber (5) is fixedly connected to a flow velocity enhancement structure (8); The flow rate enhancement structure (8) comprises a booster pump (6), the water outlet end of the booster pump (6) is fixedly connected to the water inlet end of the inclined pressure pipe (7), a gradually decreasing channel (9) is provided inside the inclined pressure pipe (7), and a plurality of speed increasing rings (10) with gradually decreasing diameters are sequentially provided on the inner wall of the gradually decreasing channel (9).

2. A water diversion system for a hydropower station according to claim 1, characterized in that: A detachable filtering structure (11) is snap-connected to one side of the top of the water diversion channel (3), and the detachable filtering structure (11) comprises two limiting slide grooves (12), and one end of the two limiting slide grooves (12) is slidably connected to one end of two limiting clamping plates (13) respectively.

3. A water diversion system for a hydropower station according to claim 2, characterized in that: The middle parts of the top ends of the two limit clamping plates (13) are fixedly connected to the two sides of the bottom end of the connecting plate (14) respectively.

4. A water diversion system for a hydropower station according to claim 3, characterized in that: Both ends of one side of the two limit clamps (13) are provided with connecting grooves (15), one end of the four connecting grooves (15) is slidably connected to one end of four connecting slide blocks (16), and the middle part of one side of the four connecting slide blocks (16) is fixedly connected to the two sides of the two filter screens (17).

5. A water diversion system for a hydropower station according to claim 1, characterized in that: A speed-increasing switch is fixedly arranged on one side of the pressure regulating chamber (5), and the booster pump (6) is electrically connected to an external power supply via the speed-increasing switch.

Images