CN218204694U

CN218204694U - Pump station effluent pool structure

Info

Publication number: CN218204694U
Application number: CN202222486494.1U
Authority: CN
Inventors: 白妍丽; 张兴旺; 杨宁; 王红; 李鹏科; 李富忠
Original assignee: Gansu Water Conservancy And Hydropower Survey Design And Research Institute Co ltd
Current assignee: Gansu Water Conservancy And Hydropower Survey Design And Research Institute Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-03
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses a pump station effluent pond structure, including effluent pond and outlet pipe, the outlet pipe is located effluent pond one end, the one end that the outlet pipe was kept away from to the effluent pond has the delivery port, the position that is close to the outlet pipe in the effluent pond is provided with one-level thin wall weir, form one-level absorption pond between one-level thin wall weir and the effluent pond inner wall, the tip of outlet pipe is located one-level absorption pond inside, the effluent pond is provided with second grade thin wall weir along width direction, form second grade absorption pond between second grade thin wall weir and the one-level thin wall weir, and highly being less than one-level thin wall weir of second grade thin wall weir, delivery port department is connected with the drainage canal, the interior bottom of drainage canal is higher than the effluent pond bottom, form tertiary absorption pond between second grade thin wall weir and the drainage canal. Therefore, the effect of further improving the energy dissipation by gradually reducing the water flow fluctuation is realized by gradually dissipating the energy of the stilling basin and gradually reducing the water level drop.

Description

Pump station effluent pool structure

Technical Field

The utility model belongs to pump station effluent pool field especially relates to a pump station effluent pool structure.

Background

The pump station is a very important building in water conservancy projects, particularly in water transmission and distribution projects, and the building and equipment provide energy for water flow so that water flow in a water source area can flow to a water receiving area with higher topography. The pump station water outlet pool is a building connected with the water outlet pipeline and the irrigation and drainage main channel, and has the function of smoothly and uniformly introducing water flow of the pipeline into the main channel so as to avoid channel flushing. Considering that water flow is conveyed in a pipeline to generate head loss, when the water flow passes through a pumping station plant and is conveyed to a high position by a pressure steel pipe, a surplus water head, namely surplus energy is always generated, and the surplus energy causes the flow state of the water flow flowing out of a water outlet pipe of the pumping station to be unstable, so that the water flow fluctuation is large or water splash is caused. In order to weaken the scouring effect of water flow on channels, the general method is to deepen a pump station water outlet pool and achieve the purpose of force dissipation by independently arranging a retaining dam. However, when the pump station water outlet pool is deepened, deep excavation needs to be considered, and a mode of separately arranging a water retaining dam is adopted, so that the energy dissipation degree is limited, the arrangement of the water retaining dam is to realize overflow, but when overflow occurs, the problem that water flow has a large height difference still exists, water flow fluctuation still exists, and the scouring effect of the water flow on the channel is still relatively strong, for example, a pump station water outlet structure is described in patent document with publication number CN212670801U, and water flow in the water outlet pool enters the absorption pool through an overflow weir, and the water level drop is not gradually reduced, so that the energy dissipation effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a pump station effluent pool structure of effect through reducing the drop of water level gradually and further improving the energy dissipation.

The utility model adopts the technical scheme as follows:

the utility model provides a pump station effluent pond structure, including effluent pond and outlet pipe, the outlet pipe is located effluent pond one end, the one end that the outlet pipe was kept away from to the effluent pond has the delivery port, the position that is close to the outlet pipe in the effluent pond is provided with one-level thin wall weir, form one-level stilling pool between one-level thin wall weir and the effluent pond inner wall, the tip of outlet pipe is located inside one-level stilling pool, the effluent pond is provided with second grade thin wall weir along width direction, form second grade stilling pool between second grade thin wall weir and the one-level thin wall weir, and the height that highly is less than one-level thin wall weir of second grade thin wall weir, delivery port department is connected with the drainage canal, the interior bottom of drainage canal is higher than the effluent pond bottom, form tertiary stilling pool between second grade thin wall weir and the drainage canal.

The further technical scheme is that the number of the water outlet pipes and the number of the first-stage thin-wall weirs are two.

The further technical scheme is that the primary thin-wall weir is in a U-shaped structure.

A further technical scheme is that the inner bottom wall of the drainage channel is of a downhill structure.

The further technical scheme is that one end of the drainage channel, which is far away from the water outlet pool, is gradually reduced.

The further technical scheme is that the tops of the primary thin-wall weir and the secondary thin-wall weir are both arc surfaces.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the water flow in the second-stage stilling pool is reduced along with the reduction of the water level difference of the water flow in the second-stage stilling pool, the water flow overflows the second-stage thin-wall weir into the third-stage stilling pool, the third-stage stilling pool is filled with water to form a water cushion, the water level difference of the water flow in the third-stage stilling pool is further reduced, the water flow in the last-stage stilling pool is finished, and the water flow overflows the third-stage stilling pool into the drainage channel, so that the effect of further reducing the water level difference of the water flow is further improved by gradually reducing the water level difference of the water flow in the third-stage stilling pool.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic sectional structure of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1-2. The utility model provides a pump station effluent pool 1 structure, including effluent pool 1 and outlet pipe 2, outlet pipe 2 is located effluent pool 1 one end, the one end that outlet pipe 2 was kept away from to effluent pool 1 has delivery port 3, the position that is close to outlet pipe 2 in effluent pool 1 is provided with one-level thin wall weir 4, form one-level absorption basin 6 between one-level thin wall weir 4 and the effluent pool 1 inner wall, the tip of outlet pipe 2 is located inside one-level absorption basin 6, effluent pool 1 is provided with second grade thin wall weir 7 along the width direction, form second grade absorption basin 8 between second grade thin wall weir 7 and the one-level thin wall weir 4, and the height of second grade thin wall weir 7 is less than one-level thin wall weir 4, delivery port 3 department is connected with drainage canal 9, the interior bottom of drainage canal 9 is higher than effluent pool 1 bottom, form tertiary absorption basin 10 between second grade thin wall weir 7 and the drainage canal 9.

When the water flow-out device is used, when water discharged from the water outlet pipe 2 enters the first-stage stilling pool 6, because water flows through the pump station plant and then is conveyed to a high position through the pressure steel pipe, a rich water head is always available, namely rich energy, the flow state of the water flow flowing out of the water outlet pipe 2 of the pump station is not stable due to the rich energy, the water flow has a phenomenon of large fluctuation and rolling after entering the first-stage stilling pool 6, the large fluctuation and rolling degree can be reduced along with the fact that the water flow is full of the first-stage stilling pool 6, then the water flow overflows the first-stage thin-wall weir 4 and enters the second-stage stilling pool 8, the second-stage stilling pool 8 is full of the water flow and subsequently enters the second-stage stilling pool 10, fluctuation of the water flow is reduced again, and the water flow enters channels along the drainage channels 9 after overflowing from the third-stage stilling pool 10, fluctuation of the water flow can be greatly reduced when entering the channels, and scouring channels can be further reduced.

The water flow in the first-stage absorption basin 6 is firstly removed through rolling flow in the first-stage absorption basin 6, then the water flow overflows the first-stage thin-wall weir 4 and enters the second-stage absorption basin 8, the water flow is filled in the second-stage absorption basin 8 to further dissipate energy, the water flow level drop entering the second-stage absorption basin 8 is reduced, the water flow fluctuation in the second-stage absorption basin 8 is reduced, then the water flow overflows the second-stage thin-wall weir 7 and enters the third-stage absorption basin 10, a water cushion is formed after the water is filled in the third-stage absorption basin 10, the last time of the water flow is completed, the water flow entering the third-stage absorption basin 10 is further reduced, the water flow fluctuation in the third-stage absorption basin 10 is also reduced, the water flow overflow in the third-stage absorption basin 10 can reach the third-stage absorption basin 9, and the water level drop of the water flow in the third-stage absorption basin 10 is further reduced, and the water flow fluctuation effect of the water flow in the third-stage absorption basin 10 is gradually improved and gradually reduced.

The water outlet pipe 2 and the one-level thin-wall weir 4 are both provided with two parts, water flow can be divided into two parts which are respectively sent into the two one-level stilling pools 6, and the energy carried by the water flow is further divided, so that the energy dissipation effect of the subsequent two-level stilling pools 8 is facilitated.

The primary thin-wall weir 4 is in a U-shaped structure, and water in the water outlet pipe 2 can be guided to flow along the inner wall of the primary thin-wall weir 4 to be divided along two sides after flowing out, so that the purpose of discharging part of impact force when water just begins to flow out is achieved, and uniform overflow of water flow into the secondary absorption basin 8 is facilitated.

The bottom wall is the downhill path structure in the drainage channel 9, is favorable to rivers to flow out from tertiary absorption basin 10 fast.

One end of the drainage channel 9, which is far away from the water outlet pool 1, is gradually reduced, so that water flow can be drawn into the channel.

The tops of the first-stage thin-wall weir 4 and the second-stage thin-wall weir 7 are both arc surfaces, so that water flow can continuously overflow the first-stage thin-wall weir 4 and the second-stage thin-wall weir 7.

The above is merely a preferred embodiment of the present invention.

Claims

1. The utility model provides a pump station effluent pool structure, including effluent pool (1) and outlet pipe (2), outlet pipe (2) are located effluent pool (1) one end, the one end that outlet pipe (2) were kept away from in effluent pool (1) has delivery port (3), a serial communication port, the position that is close to outlet pipe (2) in effluent pool (1) is provided with one-level thin wall weir (4), form one-level absorption pond (6) between one-level thin wall weir (4) and effluent pool (1) inner wall, the tip of outlet pipe (2) is located inside one-level absorption pond (6), effluent pool (1) is provided with second grade thin wall weir (7) along the width direction, form second grade absorption pond (8) between second grade thin wall weir (7) and one-level thin wall weir (4), and the height of second grade thin wall weir (7) is less than one-level thin wall weir (4), delivery port (3) department is connected with drainage canal (9), the interior bottom of drainage canal (9) is higher than effluent pool (1) bottom, form tertiary absorption pond (10) between second grade thin wall weir (7) and drainage canal (9).

2. The pump station effluent pool structure according to claim 1, wherein there are two of the outlet pipe (2) and the first-level thin-walled weir (4).

3. The pump station effluent pool structure according to claim 1, wherein the primary thin-walled weir (4) is of a U-shaped structure.

4. The pump station effluent pool structure of claim 1, wherein the inner bottom wall of the drainage channel (9) is in a downhill structure.

5. The pump station effluent pool structure of claim 1, wherein the end of the drainage channel (9) away from the effluent pool (1) is gradually reduced.

6. The pump station effluent pool structure according to claim 1, wherein the tops of the primary thin-wall weir (4) and the secondary thin-wall weir (7) are both arc surfaces.