Underground regulating pond with water diversion structure

Abstract

The present invention discloses an underground regulating pond with a water diversion structure, which includes a power station arranged downstream of the underground regulating pond, and also includes a regulating pond chamber arranged below the ground surface and a plurality of water diversion tunnels communicated with the regulating pond chamber. The water diversion tunnels are fixedly connected to the lower half of the regulating pond chamber and extend to communicate with the water inlet of the power station. The present invention can convey the power generation tail water through the water diversion tunnels to the downstream lower-level power station for power generation work, so as to realize the recycling of the power generation tail water in a multi-stage series power station; the present invention can quickly and conveniently convey the power generation tail water in the regulating pond chamber. After the upper-level power station generates electricity, the power generation tail water can be conveyed to the lower-level power station for power generation in the first time, so as to realize the recycling of the power generation tail water, avoid resource waste and save the power generation cost.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic construction, and in particular to an underground regulating pool with a water diversion structure. Background Art

[0002] A regulating pool can regulate the inlet flow and outlet flow of a power station. Generally, the regulating pool is set on the ground. Since the ground ecology in some areas is relatively fragile, setting the regulating pool on the ground is likely to damage the ecological environment. An underground regulating pool built underground can avoid the impact on the surface environment.

[0003] The underground regulating pool can regulate the flow of the inlet and outlet water of the power station. The power station is generally set in the upstream direction of the underground regulating pool. The upstream power station conveys the power generation tail water to the underground regulating pool for flow control. The power generation tail water in the underground regulating pool is generally directly discharged or returned to the upstream power station. However, the reflux project is complex and costly, and direct discharge will waste a large amount of water resources. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide an underground regulating pool with a water diversion structure, which can convey the power generation tail water in the underground regulating pool to the lower-level power station for use.

[0005] The technical solution adopted by the present invention to solve the above technical problem is: an underground regulating pool with a water diversion structure, including a power station arranged downstream of the underground regulating pool, and further including a regulating pool chamber arranged below the ground surface and a plurality of water diversion tunnels communicated with the regulating pool chamber. The water diversion tunnels are fixedly connected to the lower half of the regulating pool chamber and extend to communicate with the water inlet of the power station.

[0006] Further: the top height of the upper edge of the water diversion tunnel is lower than the lowest limit water level of the regulating pool chamber.

[0007] Further: it further includes a water diversion gate arranged in the water diversion tunnel.

[0008] Further: it further includes a sand discharge tunnel and a plurality of sand discharge holes arranged on the regulating pool chamber. The sand discharge holes are communicated with the sand discharge tunnel; the sand discharge tunnel extends in a direction away from the regulating pool chamber.

[0009] Further: the height of the sand discharge hole is lower than the height of the connection between the water diversion tunnel and the regulating pool chamber.

[0010] Further: it further includes a plurality of high-pressure nozzles arranged in the regulating pool chamber. The spray nozzles of the high-pressure nozzles are arranged upward at the bottom of the regulating pool chamber.

[0011] Further: the regulating pool chamber is composed of a plurality of horizontally and vertically arranged transverse chambers and longitudinal chambers communicated with each other.

[0012] Furthermore, the water diversion tunnel and the sediment drainage tunnel are both connected to the outermost lateral chamber in the regulating pool chamber; the water diversion tunnels correspond to the longitudinal chambers one by one, and the water diversion tunnels are arranged along the extension line direction of the corresponding longitudinal chambers.

[0013] Furthermore, slopes inclined downward toward the middle of the lateral chamber are provided at the bottoms of both ends of the lateral chamber; slopes inclined downward toward the corresponding water diversion tunnel are provided at the bottom of the longitudinal chamber.

[0014] The beneficial effects of the present invention are as follows: By improving the structure of the underground regulating pool, the water diversion tunnels on the regulating pool chamber of the underground regulating pool are used to convey the stored water in the regulating pool chamber. After the underground regulating pool receives the power generation tail water from the upper-level power station and controls the flow rate, the power generation tail water can be conveyed through the water diversion tunnel to the lower-level power station located downstream for power generation work, thereby realizing the recycling of the power generation tail water in the multi-stage series power stations; The present invention can quickly and conveniently convey the power generation tail water in the regulating pool chamber. After the upper-level power station generates electricity, the power generation tail water can be conveyed to the lower-level power station for power generation in the first time, thereby realizing the recycling of the power generation tail water, avoiding resource waste, and also saving the power generation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an isometric view of the present invention;

[0016] Figure 2 is a top view of the present invention;

[0017] Figure 3 is Figure 2 a sectional view taken along line A-A in

[0018] Figure 4 is Figure 2 a sectional view taken along line B-B in

[0019] In the figure, the markings are: 100 - regulating pool chamber, 110 - high-pressure nozzle, 200 - water diversion tunnel, 210 - water diversion gate, 300 - sediment drainage tunnel, 310 - sediment drainage hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] For the convenience of understanding the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", etc. is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] As Figures 1 to 3 shown, the underground regulating pool with a water diversion structure disclosed by the present invention optimizes the structure of the underground regulating pool. A plurality of water diversion tunnels 200 are added to the regulating pool chamber 100, and a power station is arranged downstream of the underground regulating pool. One end of the water diversion tunnel 200 communicates with the lower half of the regulating pool chamber 100, and the other end of the water diversion tunnel 200 extends towards the direction of the power station located downstream of the underground regulating pool and communicates with the water inlet of the power station. In the present invention, the water diversion tunnel 200 and the regulating pool chamber 100 are also arranged below the ground surface, and the water diversion tunnel 200 is a channel structure with a closed peripheral surface; after the power station located upstream of the underground regulating pool generates electricity, the generated tail water is conveyed into the regulating pool chamber 100 of the underground regulating pool. After the regulating pool chamber 100 controls the flow rate of the generated tail water, the generated tail water in the regulating pool chamber 100 is conveyed to the power station located downstream of the underground regulating pool through the water diversion tunnel 200 for its power generation work. By analogy, it can be conveyed to power stations further downstream for power generation, thereby realizing the multiple utilization and recycling of the generated tail water.

[0023] When the diversion tunnel 200 is connected to the regulating pool chamber 100, water outlets corresponding to the diversion tunnel 200 one by one are opened on the wall surface of the regulating pool chamber 100, and the diversion tunnel 200 is connected at the corresponding water outlets. The height of the upper edge top of the diversion tunnel 200 is preferably lower than the lowest limiting water level of the regulating pool chamber 100, so that the power generation tail water in the regulating pool chamber 100 can flow into the diversion tunnel 200 without the help of external force. Further, in order to control the flow rate of the power generation tail water in the diversion tunnel 200, a diversion gate 210 is arranged in the diversion tunnel 200 of the present invention, and the flow rate in the diversion tunnel 200 can be controlled by the opening degree of the diversion gate 210; in addition, the diversion gate 210 can also directly serve as the opening and closing mechanism of the diversion tunnel 200. When water diversion to the downstream power station is not required, the diversion gate 210 is directly closed. Although the height of the upper edge top of the diversion tunnel 200 is lower than the lowest limiting water level of the regulating pool chamber 100, the power generation tail water in the regulating pool chamber 100 cannot flow through the diversion gate 210 in the diversion tunnel 200; when water diversion to the downstream power station is required, the diversion gate 210 is directly opened. Since the height of the upper edge top of the diversion tunnel 200 is lower than the lowest limiting water level of the regulating pool chamber 100, the power generation tail water in the regulating pool chamber 100 can directly flow into the diversion tunnel 200 and be transported to the downstream power station after passing through the opened diversion gate 210.

[0024] Since a large amount of sediment will be involved in the transportation of the power generation tail water, a large amount of sediment will accumulate at the bottom of the regulating pool chamber 100 in the underground regulating pool when the power generation tail water accumulates in the regulating pool chamber 100. If it is directly transported to the downstream power station through the diversion tunnel 200, it will seriously affect the normal power generation work of the downstream power station; therefore, a sediment discharge tunnel 300 is added in the present invention. As Figure 1 、 Figure 2 and Figure 4 shown, a plurality of sediment discharge holes 310 are opened on the regulating pool chamber 100, the sediment discharge tunnel 300 is communicated with each sediment discharge hole 310 through a plurality of branch pipes, and the sediment discharge tunnel 300 extends towards the direction away from the regulating pool chamber 100 to the downstream river channel. During the sediment discharge work, the power generation tail water mixed with sediment can be discharged to the downstream river channel through the sediment discharge tunnel 300.

[0025] The sediment accumulates at the bottom of the regulating pool chamber 100. Therefore, in order to facilitate the discharge of the sediment, the position of the sediment discharge hole 310 is further limited in the present invention, so that the height of the sediment discharge hole 310 is lower than the height of the connection between the diversion tunnel 200 and the regulating pool chamber 100, which can not only ensure the smooth discharge of the sediment but also not affect the normal water diversion work; the bottom plate of the regulating pool chamber 100 can also be set as an inclined surface to guide the sediment. In addition, when the sediment accumulates for a long time, it is not easy to discharge the accumulated sediment directly during the sediment discharge work. As Figure 3As shown in the figure, in the present invention, a plurality of high-pressure nozzles 110 are added in the regulating pool chamber 100. The plurality of high-pressure nozzles 110 are installed at the bottom of the regulating pool chamber 100 with the nozzles facing upward. Then, the high-pressure water flow ejected by the high-pressure nozzles 110 can roll up the sediment accumulated in the regulating pool chamber 100, facilitating the discharge of the sediment by the water flow.

[0026] The regulating pool chamber 100 in the present invention can adopt an independent underground chamber structure; the regulating pool chamber 100 in the present invention can also be realized by a regulating pool chamber 100 composed of a plurality of horizontally and vertically arranged transverse chambers and longitudinal chambers connected to each other to achieve the series connection with multiple power stations, so as to realize the multiple reuse of the power generation tail water between multiple power stations. As Figure 1 and Figure 2 shown in the figure, when an underground chamber group composed of a transverse chamber and a longitudinal chamber connected to each other is adopted, both the water diversion tunnel 200 and the sediment discharge tunnel 300 are connected to the outermost transverse chamber in the regulating pool chamber 100; the water diversion tunnels 200 correspond to the longitudinal chambers one by one, and the water diversion tunnels 200 are arranged along the extension line direction of the corresponding longitudinal chambers. Through the above structure, the number of times of water flow direction change during water diversion of the power generation tail water in the regulating pool chamber 100 can be reduced. The power generation tail water in the transverse chamber can be collected into the longitudinal chamber and then transported to the corresponding water diversion tunnel 200 in a direct current manner, reducing the turbulence and improving the stability of the transported water flow. Slopes inclined downward towards the middle of the transverse chamber can also be provided at both ends of the bottom of the transverse chamber, and slopes inclined downward towards the corresponding water diversion tunnel 200 can be provided at the bottom of the longitudinal chamber to improve the efficiency of sediment discharge and water diversion work.

Claims

1. An underground regulating pond with a water diversion structure, characterized in that: It includes a power station arranged downstream of the underground regulating pond, and also includes a regulating pond chamber (100) arranged below the ground surface and a plurality of water diversion tunnels (200) communicated with the regulating pond chamber (100). The water diversion tunnels (200) are fixedly connected to the lower half of the regulating pond chamber (100) and extend to communicate with the water inlet of the power station; It also includes a water diversion gate (210) arranged in the water diversion tunnel (200); It also includes a sediment discharge tunnel (300) and a plurality of sediment discharge holes (310) arranged on the regulating pond chamber (100). The sediment discharge holes (310) are communicated with the sediment discharge tunnel (300); the sediment discharge tunnel (300) extends in a direction away from the regulating pond chamber (100); the height of the sediment discharge holes (310) is lower than the height of the connection between the water diversion tunnel (200) and the regulating pond chamber (100); It also includes a plurality of high-pressure nozzles (110) arranged in the regulating pond chamber (100). The nozzles of the high-pressure nozzles (110) are arranged upward at the bottom of the regulating pond chamber (100); The regulating pond chamber (100) is composed of a plurality of horizontally and vertically arranged transverse chambers and longitudinal chambers communicated with each other; Both the water diversion tunnel (200) and the sediment discharge tunnel (300) are communicated with the outermost transverse chamber in the regulating pond chamber (100); the water diversion tunnels (200) correspond to the longitudinal chambers one by one, and the water diversion tunnels (200) are arranged along the extension line direction of the corresponding longitudinal chambers; Slopes inclined downward toward the middle of the transverse chamber are arranged at the bottoms of both ends of the transverse chamber; slopes inclined downward toward the corresponding water diversion tunnel (200) are arranged at the bottom of the longitudinal chamber.

2. The underground regulating pond with a water diversion structure according to claim 1, characterized in that: The height of the upper edge top of the water diversion tunnel (200) is lower than the lowest limit water level of the regulating pond chamber (100).

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