A plain reservoir water taking system

Abstract

The utility model discloses a plain reservoir water taking system, including water intake pool, water taking shaft and communication pipe, the water intake pool is concave and is built in the reservoir bottom, the water taking shaft is built on the dam top of cofferdam or cofferdam outside dam slope, the communication pipe is connected with water intake pool and water taking shaft, the water taking shaft well bottom elevation is lower than the pool bottom elevation of water intake pool, be provided with submersible pump in the water taking shaft, the submersible pump is located below the pool bottom elevation of water intake pool, is connected with the outlet tube on the submersible pump, is provided with the valve on the communication pipe, is built on the dam slope of cofferdam inside and has the overhaul shaft, and the valve is placed in the overhaul shaft. The utility model discloses the pool bottom elevation of water intake pool is lower than the reservoir bottom elevation, the water taking shaft well bottom elevation is lower than the pool bottom elevation of water intake pool, and the submersible pump is located below the pool bottom elevation of water intake pool, even when the reservoir lower water level, water will flow to the water taking shaft, thereby reservoir water surface freezing and water level change do not affect the water taking.

Description

Technical Field

[0001] This utility model belongs to the field of water intake technology for plain reservoirs, and particularly relates to a water intake system for plain reservoirs. Background Technology

[0002] In plains areas, to ensure water supply for industry, cities, rural residents, and agricultural irrigation, low-lying areas are often transformed by excavating soil, constructing dams to increase capacity, and diverting water to form water-regulating reservoirs. Due to the low elevation, the water intake system requires pumping stations to meet water demand. Conventional methods include excavating an intake pool inside the dam and installing submersible pumps, excavating underground submersible fixed pumping stations outside the dam and installing centrifugal pumps, or directly utilizing the dam slope to install cable car-type submersible pumps. However, submersible pumps have low efficiency and short lifespan, underground submersible fixed pumping stations involve large investments and complex structures, cable car-type submersible pumps are susceptible to freezing in winter and their tracks are prone to corrosion, and the horizontal installation of submersible pumps results in poor axial stress, which can easily lead to equipment damage. Therefore, it is essential to research an efficient and stable water intake system for plains reservoirs. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide a water intake system for plain reservoirs.

[0004] To solve the above problems, the present invention adopts the following technical solution: A water intake system for a plain reservoir includes an intake pool, an intake shaft, and a connecting pipe. The intake pool is recessed and built at the bottom of the reservoir. The intake shaft is built on the top of the dam or on the outer slope of the dam. The connecting pipe is horizontally installed between the intake pool and the intake shaft, connecting them. The bottom elevation of the intake shaft is lower than the bottom elevation of the intake pool. A submersible pump is installed in the intake shaft, located below the bottom elevation of the intake pool. An outlet pipe is connected to the submersible pump, with its other end extending outside the intake shaft. A valve is installed on the connecting pipe. A maintenance shaft is built on the inner slope of the dam, and the connecting pipe runs horizontally through the maintenance shaft. The valve is located inside the maintenance shaft.

[0005] Preferably, the elevation of the maintenance shaft opening is higher than the reservoir water level.

[0006] Preferably, a trash rack is provided at one end of the connecting pipe that connects to the water inlet pool.

[0007] The beneficial effects of this utility model are: Compared with existing technologies, the advantages of this utility model are: This invention involves constructing an intake pool at a recessed level in the reservoir and a water intake shaft on the top of the dam or the outer slope of the dam. A connecting pipe links the intake pool and the water intake shaft, allowing water to be introduced into the intake shaft using the principle of communicating vessels. A submersible pump is installed in the intake shaft to pump water, which is then delivered to the water user through an outlet pipe. Because the bottom elevation of the intake pool is lower than the bottom elevation of the reservoir, and the bottom elevation of the water intake shaft is lower than the bottom elevation of the intake pool, and the submersible pump is located below the bottom elevation of the intake pool, even at low water levels in the reservoir... At the same time, water will also flow into the water intake shaft, so that the freezing of the reservoir surface and changes in water level will not affect water intake. Moreover, the submersible pump is submerged to a sufficient depth, which can avoid cavitation and abnormal operation, resulting in high water intake efficiency. Sufficient water can be obtained even when the reservoir is at a low water level. In addition, a maintenance shaft is built on the inner slope of the dam, and a valve is installed on the connecting pipe. The valve is located in the maintenance shaft, so the water intake flow can be adjusted by adjusting the valve opening, or the water supply can be cut off by opening and closing the valve. This makes it convenient for personnel to enter the water intake shaft to inspect and maintain the submersible pump. Attached Figure Description

[0008] Figure 1 This is a longitudinal sectional view of the present invention; Figure 2 This is a schematic diagram of the planar layout of this utility model.

[0009] In the diagram: 1. Inlet pool; 2. Water intake shaft; 3. Connecting pipe; 4. Submersible pump; 5. Outlet pipe; 6. Valve; 7. Maintenance shaft; 8. Trash rack. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] like Figure 1-2As shown, this utility model provides a technical solution: a water intake system for a plain reservoir, including an intake pool 1, an intake shaft 2, and a connecting pipe 3. The intake pool 1 is recessed and built at the bottom of the reservoir. The intake shaft 2 is built on the top of the dam or on the outer slope of the dam. The connecting pipe 3 is horizontally arranged between the intake pool 1 and the intake shaft 2, connecting the two. The bottom elevation of the intake shaft 2 is lower than the bottom elevation of the intake pool 1. A submersible pump 4 is installed in the intake shaft 2, located below the bottom elevation of the intake pool 1. An outlet pipe 5 is connected to the submersible pump 4, and the other end of the outlet pipe 5 extends to the outside of the intake shaft 2. A valve 6 is installed on the connecting pipe 3. A maintenance shaft 7 is built on the inner slope of the dam, and the connecting pipe 3 runs horizontally through the maintenance shaft 7. The valve 6 is placed inside the maintenance shaft 7.

[0012] This invention involves constructing an intake pool 1 at the bottom of a reservoir and a water intake shaft 2 on the top of the dam or the outer slope of the dam. The intake pool 1 and the water intake shaft 2 are connected by a connecting pipe 3. Water is introduced into the water intake shaft 2 using the principle of communicating vessels. A submersible pump 4 is installed in the water intake shaft 2 to pump water and deliver it to the water user through an outlet pipe 5. Because the bottom elevation of the intake pool 1 is lower than the bottom elevation of the reservoir, and the bottom elevation of the water intake shaft 2 is lower than the bottom elevation of the intake pool 1, and the submersible pump 4 is located below the bottom elevation of the intake pool 1, even when the reservoir is at a low water level... When the reservoir is frozen or the water level changes, the water will also flow into the intake shaft 2. Therefore, the water intake will not be affected by the freezing of the reservoir surface or the change of water level. Moreover, the submersible pump 4 is submerged to a sufficient depth, which can avoid cavitation and abnormal operation. The water intake efficiency is high, and sufficient water can be obtained even when the reservoir is at a low water level. In addition, a maintenance shaft 7 is built on the inner slope of the dam. A valve 6 is installed on the connecting pipe 3. The valve 6 is placed in the maintenance shaft 7. The water intake flow can be adjusted by adjusting the opening of the valve 6, or the water supply can be cut off by opening and closing the valve 6. This makes it convenient for personnel to enter the intake shaft 2 to inspect and maintain the submersible pump 4.

[0013] Furthermore, the elevation of the wellhead of the maintenance shaft 7 is higher than the water level of the reservoir to prevent the maintenance shaft 7 from being submerged.

[0014] Furthermore, a debris screen 8 is provided at one end of the connecting pipe 3 that connects to the water inlet pool 1 to block debris in the water and prevent it from entering the connecting pipe 3 and causing blockage.

[0015] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water intake system for a plain reservoir, characterized in that, The system includes an intake pool (1), a water intake shaft (2), and a connecting pipe (3). The intake pool (1) is recessed and built at the bottom of the reservoir. The water intake shaft (2) is built on the top of the dam or on the outer slope of the dam. The connecting pipe (3) is horizontally installed between the intake pool (1) and the water intake shaft (2) to connect them. The bottom elevation of the water intake shaft (2) is lower than the bottom elevation of the intake pool (1). A submersible pump (4) is installed inside the water inlet pool (1) below the bottom elevation. A water outlet pipe (5) is connected to the submersible pump (4). The other end of the water outlet pipe (5) extends to the outside of the water intake shaft (2). A valve (6) is installed on the connecting pipe (3). A maintenance shaft (7) is built on the inner slope of the dam. The connecting pipe (3) runs horizontally through the maintenance shaft (7). The valve (6) is placed inside the maintenance shaft (7).

2. The plain reservoir water intake system according to claim 1, characterized in that, The elevation of the wellhead of the maintenance shaft (7) is higher than the water level of the reservoir.

3. The plain reservoir water intake system according to claim 1, characterized in that, A trash rack (8) is provided at one end of the connecting pipe (3) that connects to the water inlet pool (1).

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