A large pumping station system

Abstract

This invention relates to the field of water conservancy engineering technology, and particularly to a large-scale pumping station system, comprising a gate area, a sedimentation tank, a filtration station, a transition zone, and a pumping station flow channel area arranged sequentially along the water flow direction. An anti-buoyancy base plate extends outward from the edge of the system's walls. The gate area is equipped with at least two main gates and at least one auxiliary gate. Several first energy dissipation piers are arranged within the sedimentation tank. Coarse and fine screens are installed between the guide walls of adjacent filtration stations and between the guide walls and the outer walls of the filtration stations. The transition zone, shaped like a funnel, is arranged with several second energy dissipation piers. Suction heads for intake pumps are installed between adjacent water distribution walls and between the water distribution walls and the outer walls of the pumping station flow channel area. This large-scale pumping station system improves anti-buoyancy stability through the anti-buoyancy base plate and effectively solves the problem of instability caused by large amounts of seawater entering the pumping station through zoned design and gradual reduction of water flow energy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic engineering, in particular to a large pump station system. BACKGROUND

[0002] The seawater cooling system is a cooling system using seawater as the cooling medium, which is widely used in industrial facilities such as power plants, chemical plants, oil refineries and other industrial facilities that need to exchange a large amount of heat.

[0003] The existing seawater cooling system needs to use a large pump station (total length more than 100 meters, total width more than 35 meters, total height more than 20 meters, design flow more than 150000 m 3 / h) to pump seawater into the user end to cool the equipment. Since the seawater cooling system needs to be arranged on the seashore, the anti-floating stability of the existing large pump station is difficult to meet the design requirements, and the large pump station system has a huge water intake, and a large amount of seawater flowing into the pump station can easily cause the pump station system to be unstable, and the safety risk is large. SUMMARY

[0004] The present application relates to the technical field of hydraulic engineering, in particular to a large pump station system.

[0005] In a first aspect, the present application provides a large pump station system, comprising a gate area, a sedimentation tank, a filter station, a transition area and a pump station flow channel area arranged in sequence along the water flow direction, and an anti-floating bottom plate extending outward from the wall edge of the large pump station system; the gate area is provided with at least two main gates, and the upper part of the two main gates is further provided with at least one auxiliary gate, the main gate and the auxiliary gate are used to control the water in the gate area to enter the sedimentation tank; a plurality of first energy dissipation piers are arranged in the sedimentation tank, and the first energy dissipation piers are used for energy dissipation of incoming water; a plurality of filter station guide walls, a plurality of coarse screens and a plurality of fine screens are arranged in the filter station, and the coarse screens and the fine screens are arranged between adjacent filter station guide walls and between the filter station guide walls and the outer wall of the filter station; the transition area is arranged in a trumpet mouth along the direction of incoming water, a plurality of second energy dissipation piers are arranged in the transition area, and the second energy dissipation piers are used for energy dissipation of incoming water; the pump station flow channel area comprises a plurality of water distribution walls, and the suction head of the water intake pump is arranged between adjacent water distribution walls and between the water distribution walls and the outer wall of the pump station flow channel area.

[0006] The large pump station system provided by the present application has an anti-floating bottom plate extending outward from the wall edge of the pump station system, which increases the contact area of the pump station foundation and the ground, fully utilizes the soil pressure above the anti-floating bottom plate to resist the buoyancy, significantly enhances the anti-floating stability of the pump station, and enables the pump station to operate safely under complex coastal geological conditions, avoiding the risk of structural damage caused by buoyancy.

[0007] The gate area is the first area for incoming water to enter the pump station system, and bears a large water pressure. Through the double design of the main and auxiliary gates, when the pressure in the gate area is large and the main gate cannot be opened, the auxiliary gate located above the main gate can be opened first to release pressure, and then the main gate can be opened when the pressure is reduced, preventing the incoming water pressure from being too large to cause the gate system to fail, and improving the operation stability of the large pump station system. Since there may be a large amount of marine organisms, particulate impurities, suspended solids, etc. in seawater, the flow guide wall arranged in the filter station guides the water flow to flow smoothly, and the coarse screen and the fine screen filter the large particulate impurities and small suspended solids in the water in turn, effectively improving the water quality. The suction head of the water intake pump is protected from being blocked or damaged by foreign matter, prolonging the service life of the equipment. The sedimentation tank and the transition area consume water flow energy through the first and second energy dissipation piers, respectively, further reducing the kinetic energy of the water flow and the impact force on the pump station structure, and improving the safety of the system operation. The transition area arranged in a trumpet shape along the direction of the incoming water allows the water flow to gradually diffuse before entering the pump station flow passage area, effectively reducing the water flow speed and uniformly distributing the water flow, effectively dissipating the water flow energy, and reducing the stress burden on the equipment in the pump station flow passage area. The water distribution wall in the pump station flow passage area evenly distributes the incoming water to each suction head, reducing water flow turbulence caused by excessive local flow rate, and improving the operation stability of the pump station.

[0008] The large pump station system provided by the application sequentially arranges a gate area, a sedimentation tank, a filter station, a transition area and a pump station flow passage area along the direction of the water flow, gradually reduces the water flow energy through the partition design, reduces the impact of the water flow on the internal structure of the pump station, and effectively solves the problem that a large amount of seawater flowing into the pump station easily causes the pump station system to be unstable.

[0009] Preferably, the anti-floating bottom plate extends at least two meters outward from the wall of the large pump station system.

[0010] The anti-floating bottom plate extends at least two meters, greatly increasing the stress area of the bottom plate, fully utilizing the soil pressure above the anti-floating bottom plate to resist the buoyancy, and significantly enhancing the anti-floating stability of the pump station. At the same time, the extension of the anti-floating bottom plate also increases the support range of the pump station system, reducing the possibility of structural inclination or displacement, especially in coastal areas with complex foundation conditions or high groundwater levels, which can significantly improve the stability of the structure.

[0011] Preferably, at least two rows of the first energy dissipation piers are arranged in the sedimentation tank, and the adjacent two rows of the first energy dissipation piers are arranged alternately.

[0012] With the arrangement, multiple rows of the first energy dissipation piers are arranged, and adjacent two rows of the first energy dissipation piers are staggered. When the water flow passes through the staggered energy dissipation piers, the flow path becomes tortuous and variable, effectively dispersing the energy concentration area of the water flow, greatly reducing the water flow speed, reducing the impact force on the subsequent area, improving the sedimentation and energy dissipation efficiency, and enhancing the overall safety and stability of the pump station system.

[0013] Preferably, two rows of the first energy dissipation piers are arranged in the sedimentation tank, and the first energy dissipation piers include first trapezoidal energy dissipation piers and first rectangular energy dissipation piers. In the water inflow direction, the first row of the first energy dissipation piers are all the first trapezoidal energy dissipation piers, and the second row of the first energy dissipation piers are the first trapezoidal energy dissipation piers and the first rectangular energy dissipation piers arranged at intervals.

[0014] With the arrangement, the first row of energy dissipation piers is arranged as first trapezoidal energy dissipation piers, which can be straight-angle trapezoidal energy dissipation piers. The inclined surface of the straight-angle trapezoidal energy dissipation pier can be directed towards the water inflow direction to smoothly guide the high-speed incoming water, gradually reduce the water flow speed, and reduce the direct impact of the water flow on the energy dissipation pier and the tank wall. The first trapezoidal energy dissipation pier effectively disperses the high-speed water flow, reduces the flow speed and kinetic energy, and avoids the formation of turbulent flow or vortex at the inlet of the sedimentation tank, thereby providing stable water flow conditions for the subsequent sedimentation process. The second row is provided with first trapezoidal energy dissipation piers and first rectangular energy dissipation piers, and the two are arranged at intervals in the second row. The water flow is treated by different cross-sectional shapes to further reduce the kinetic energy of the water flow, achieve more uniform energy dispersion, and achieve the effect of step-by-step energy dissipation.

[0015] Preferably, a first movable flap gate is arranged between adjacent guide walls of the filter station and between the guide walls of the filter station and the outer wall of the filter station. The first movable flap gate is located at one end of the filter station close to the sedimentation tank.

[0016] By arranging the first movable flap gate at one end close to the sedimentation tank, the flow in the filter station can be flexibly controlled to achieve precise management of the water flow in the filter station. When the screen in the filter station needs to be replaced or repaired, the first movable flap gate corresponding to a flow passage in the filter station can be flexibly selected to be closed for convenient maintenance operation. When the flow in the area after the filter station is abnormal, the first movable flap gate can be quickly closed to prevent the water flow from flowing backward to the sedimentation tank, thereby ensuring the safe operation of the system.

[0017] Preferably, a hanging wall is arranged between adjacent guide walls of the filter station and between the guide walls of the filter station and the outer wall of the filter station. The coarse screen is located between the hanging wall and the bottom plate of the filter station.

[0018] By arranging the hanging wall, the use area of the coarse screen can be reduced, and the construction cost can be reduced. At the same time, since the hanging wall is arranged between adjacent guide walls of the filter station and between the guide walls of the filter station and the outer wall of the filter station, the structural stability of the filter station can be effectively improved, and the operation stability of the pump station can be improved.

[0019] Preferably, a vortex-reducing structure is arranged below the water suction head, the vortex-reducing structure comprising a first vortex-reducing column and a second vortex-reducing column, a third vortex-reducing column being arranged between the first vortex-reducing column and the second vortex-reducing column, the first vortex-reducing column being connected with the outer wall of the water distribution wall or the pump station flow passage area, the second vortex-reducing column being connected with the outer wall of the water distribution wall or the pump station flow passage area, the third vortex-reducing column extending out of the middle vortex-reducing column in the direction of incoming water, the third vortex-reducing column extending out of the vertical vortex-reducing column upwardly, the middle vortex-reducing column being directly below the water suction head.

[0020] The middle vortex-reducing column of the vortex-reducing structure is directly below the water suction head and extends in the direction of incoming water, the middle vortex-reducing column and the vertical vortex-reducing column can play a role of flow straightening and effectively destroy the formation of vortex; the two ends of the third vortex-reducing column are connected with the first vortex-reducing column and the second vortex-reducing column respectively, and the three form a U-shaped structure open to the direction of incoming water, which has a good flow guiding effect. The vortex-reducing structure can effectively prevent the formation of bottom vortex or wall vortex and ensure that the incoming water smoothly enters the water suction head.

[0021] Preferably, the middle vortex-reducing column and the vertical vortex-reducing column are isosceles triangular columns; the included angle between the first vortex-reducing column, the second vortex-reducing column and the third vortex-reducing column is obtuse; the first vortex-reducing column, the second vortex-reducing column and the third vortex-reducing column are right triangular prisms.

[0022] The isosceles triangular column-shaped middle vortex-reducing column and vertical vortex-reducing column have a good flow straightening effect on the incoming water, and their symmetry can uniformly disperse the impact force of the incoming water, making the water flow more stable and avoiding the formation of turbulent flow or vortex; the obtuse angle of the first vortex-reducing column and the second vortex-reducing column makes the incoming water converge toward the position of the water suction head under the guidance of the first vortex-reducing column and the second vortex-reducing column, having a better guiding effect; the inclined surface of the first vortex-reducing column, the second vortex-reducing column and the third vortex-reducing column is in contact with the incoming water, and the right-angled surface is connected with the outer wall of the water distribution wall or the pump station flow passage area, which has a stable structure, a good flow guiding effect, improves the durability and service life of the entire vortex-reducing structure.

[0023] Preferably, at least two rows of the second energy dissipation piers are arranged in the transition area, and adjacent two rows of the second energy dissipation piers are arranged staggeredly.

[0024] By arranging adjacent two rows of the second energy dissipation piers staggeredly, the impact force and kinetic energy of the water flow can be more evenly distributed, thereby achieving more efficient energy dissipation. When the water flow passes through the energy dissipation piers, the staggered arrangement can effectively disrupt the stability of the water flow, reduce the speed and vortex of the water flow, and avoid the water flow entering the downstream area too fast.

[0025] Preferably, a second stoplog gate is arranged between the adjacent water distribution walls and between the water distribution wall and the outer wall of the pump station flow passage area, and the second stoplog gate is located at one end of the pump station flow passage area close to the transition area.

[0026] By controlling the opening and closing degree of the second stoplog gate, the water flow in different flow passages of the pump station flow passage area can be flexibly controlled, and the water flow in the pump station flow passage area can be accurately managed.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] 1. The large pump station system provided by the present application, the anti-floating bottom plate extends outward from the edge of the wall of the pump station system, increases the contact area of the pump station foundation and the ground, fully utilizes the soil pressure above the anti-floating bottom plate to resist the buoyancy, significantly enhances the anti-floating stability of the pump station, and enables the pump station to safely operate under complex coastal geological conditions, avoiding the risk of structural damage caused by buoyancy;

[0029] 2. The large pump station system provided by the present application, the gate area is the first area for incoming water to enter the pump station system, and bears a large water pressure. Through the double design of the main and auxiliary gates, when the pressure in the gate area is too large to open the main gate, the auxiliary gate located above the main gate can be opened first to release the pressure, and then the main gate can be opened after the pressure is reduced, preventing the gate system from failing due to excessive incoming water pressure and improving the operation stability of the large pump station system. Since a large amount of marine organisms, particulate impurities, suspended matter, etc. may exist in seawater, the flow guide wall arranged in the filter station guides the water flow to flow smoothly, and the coarse screen and the fine screen successively filter large particulate impurities and small suspended matter in the water, effectively improving the water quality and protecting the suction head of the water pump from being blocked or damaged by foreign matter, prolonging the service life of the equipment. The sedimentation tank and the transition area consume water flow energy through the first and second energy dissipation piers respectively, further reducing the kinetic energy of the water flow and the impact force on the pump station structure, and improving the safety of system operation. The transition area arranged in a trumpet shape along the incoming water direction enables the water flow to gradually diffuse before entering the pump station flow passage area, effectively reducing the water flow speed and uniformly distributing the water flow, effectively dissipating the water flow energy and reducing the stress burden of the equipment in the pump station flow passage area. The water distribution wall in the pump station flow passage area uniformly distributes the incoming water to each suction head, reduces water flow turbulence caused by excessive local flow speed, and improves the operation stability of the pump station.

[0030] 3. The large pump station system provided by the present application improves the anti-floating stability of the pump station through the anti-floating bottom plate, and sequentially arranges the gate area, the sedimentation tank, the filter station, the transition area and the pump station flow passage area along the water flow direction, gradually reduces the water flow energy through the partition design, reduces the impact of the water flow on the internal structure of the pump station, and effectively solves the problem that a large amount of seawater rushing into the pump station easily causes instability of the pump station system. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a large pumping station system.

[0032] Figure 2 This is a schematic diagram of the water flow status within a large pumping station system.

[0033] Figure 3 for Figure 1 Sectional view along the AA direction;

[0034] Figure 4 for Figure 1 Sectional view along the BB direction;

[0035] Figure 5 for Figure 1 Sectional view along the CC direction;

[0036] Figure 6 Arrangement diagram of the first trapezoidal energy dissipation pier and the first rectangular energy dissipation pier;

[0037] Figure 7 A partial schematic diagram of the vortex reduction structure between the two water-dividing walls;

[0038] Figure 8 This is a schematic diagram of a vortex reduction structure.

[0039] Marked in the image:

[0040] 1-Gate area, 11-Main gate, 12-Secondary gate, 2-Sedimentation tank, 21-First energy dissipation pier, 211-First trapezoidal energy dissipation pier, 212-First rectangular energy dissipation pier, 3-Filter station, 31-Filter station guide wall, 32-Coarse screen, 33-Fine screen, 34-First stacked beam gate, 35-Hanging wall, 4-Transition zone, 41-Second energy dissipation pier, 5-Pump station flow channel area, 51-Water distribution wall, 52-Second stacked beam gate, 6-Anti-buoyancy bottom plate, 7-Water suction head, 8-Vortex reduction structure, 81-First vortex reduction column, 82-Second vortex reduction column, 83-Third vortex reduction column, 84-Middle vortex reduction column, 85-Vertical vortex reduction column, 100-Water intake pipe. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0042] In the description of the embodiments of the present application, the terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", and the like, are expressed based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product / device / apparatus of the present application is usually used. These terms of orientation or positional relationship are only for the convenience of describing the present application or simplifying the description in the embodiments, and for the convenience of the skilled person to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore cannot be understood as a limitation on the present application.

[0043] In addition, the terms "horizontal", "vertical", "suspended", "parallel", and the like, do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or suspended or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "suspended", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present application.

[0044] In addition, the terms "first", "second", "third", and the like, are only used to distinguish the same or similar components for description, and should not be understood as emphasizing or implying the relative importance of a specific component.

[0045] In addition, in the description of the embodiments of the present application, "several", "a plurality of", and "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, or even more than 9.

[0046] In addition, in the description of the technical scheme of the present application, unless otherwise specified / limited / limited, the terms "arrangement", "installation", "connection", "connection", "provided with", "laid", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, such as welding, riveting, bolting, screwing, etc. The connection means commonly used in the art. Such connection can be mechanical connection, or electrical connection or communication connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements.

[0047] Embodiment 1

[0048] As Figures 1-5 shown, the embodiment provides a large pump station system, the large pump station system provided by the embodiment has a total length of more than 100 meters, a total width of more than 35 meters, a total height of more than 20 meters, and a design flow of more than 150000 m 3 / h.

[0049] The large pump station system is sequentially provided with a gate area 1, a sedimentation tank 2, a filter station 3, a transition area 4, and a pump station flow passage area 5 along the water flow direction (for example, the left-to-right direction as shown). Figure 2

[0050] As Figure 1 shown, the wall edge of the large pump station system extends outwardly to an anti-floating bottom plate 6, and the anti-floating bottom plate 6 can be integrally poured with the large pump station system in the embodiment. The distance between the edge of the anti-floating bottom plate 6 and the outer wall of the large pump station system is greater than or equal to 2 m, that is, the anti-floating bottom plate 6 extends outwardly from the wall of the large pump station system by at least 2 m.

[0051] The anti-floating bottom plate 6 extends outwardly from the wall edge of the pump station system, increases the contact area between the pump station foundation and the ground, fully utilizes the soil pressure above the anti-floating bottom plate 6 to resist the buoyancy, significantly enhances the anti-floating stability of the pump station, and enables the pump station to safely operate under the complex geological conditions of the coastal area, thereby avoiding the risk of structural damage caused by the buoyancy.

[0052] The anti-floating bottom plate 6 extends by at least 2 m, greatly increases the stress area of the bottom plate, fully utilizes the soil pressure above the anti-floating bottom plate 6 to resist the buoyancy, and significantly enhances the anti-floating stability of the pump station. Meanwhile, the extension of the anti-floating bottom plate 6 also increases the support range of the pump station system, reduces the possibility of structural inclination or displacement, and significantly improves the stability of the structure, especially in the coastal area with complex foundation conditions or high underground water level.

[0053] As Figure 1 , Figure 4 shown, the gate area 1 is provided with at least two main gates 11, and the upper portion of the two main gates 11 is further provided with at least one auxiliary gate 12. Specifically, as Figure 4 shown, four main gates 11 and two auxiliary gates 12 can be provided, the auxiliary gate 12 is located between the two main gates 11, and the height of the auxiliary gate 12 is higher than the height of the main gate 11. The main gate 11 and the auxiliary gate 12 are used to control the water in the gate area 1 to enter the sedimentation tank 2.

[0054] ​The gate area 1 is the first area for incoming water to enter the pump station system, and bears a large water pressure. Through the double design of the main and auxiliary gates 12, when the pressure of the gate area 1 is large and the main gate 11 cannot be opened, the auxiliary gate 12 located at the upper part of the main gate 11 can be opened first to release pressure, and then the main gate 11 can be opened after the pressure is reduced, preventing the large incoming water pressure from causing the gate system to fail and improving the operation stability of the large pump station system.

[0055] As shown in Figure 1 , Figure 3 , a plurality of first energy dissipation piers 21 are arranged in the sedimentation tank 2, and the first energy dissipation piers 21 are used for energy dissipation of incoming water.

[0056] A plurality of filter station guide walls 31, a plurality of coarse screens 32 and a plurality of fine screens 33 are arranged in the filter station 3, and the coarse screens 32 and the fine screens 33 are arranged between adjacent filter station guide walls 31 and between the filter station guide walls 31 and the outer wall of the filter station 3. Specifically, as shown in Figure 1 , five filter station guide walls 31 are arranged in the filter station 3, and six filter station flow channels are formed between the filter station guide walls 31 and between the filter station guide walls 31 and the outer wall of the filter station 3. In each filter station flow channel, the coarse screens 32 and the fine screens 33 are arranged in sequence along the direction of the incoming water.

[0057] Since there may be a large amount of marine organisms, particulate impurities, suspended solids and the like in seawater, the guide walls arranged in the filter station 3 guide the water flow to flow smoothly, and the coarse screens 32 and the fine screens 33 filter the large particulate impurities and fine suspended solids in the water in sequence, effectively improving the water quality and protecting the suction head 7 of the water intake pump from being blocked or damaged by foreign matter, thereby prolonging the service life of the equipment.

[0058] Further, as shown in Figure 1 , a first miter gate 34 is further arranged at one end of each filter station flow channel close to the sedimentation tank 2, that is, the first miter gate 34 is arranged between adjacent filter station guide walls 31 and between the filter station guide walls 31 and the outer wall of the filter station 3, and the first miter gate 34 is located at one end of the filter station 3 close to the sedimentation tank 2.

[0059] By arranging the first miter gate 34 at one end close to the sedimentation tank 2, the flow in the filter station 3 can be flexibly controlled, and the water flow in the filter station 3 can be accurately managed. When the screens in the filter station 3 need to be replaced or repaired, the first miter gate 34 corresponding to a flow channel in the filter station 3 can be flexibly selected to be closed, facilitating maintenance operation. When the flow in the area after the filter station 3 is abnormal, the first miter gate 34 can be quickly closed to prevent the water flow from flowing backward to the sedimentation tank 2, thereby ensuring safe operation of the system.

[0060] Further, as shown in Figure 3 , Figure 5As shown, each filter station flow passage is further provided with a hanging wall 35, the hanging wall 35 is connected with two adjacent filter station guide walls 31 or the filter station guide wall 31 and the outer wall of the filter station 3, and a coarse screen 32 is arranged below the hanging wall 35, that is, the hanging wall 35 is arranged between the two adjacent filter station guide walls 31 or the filter station guide wall 31 and the outer wall of the filter station 3, and the coarse screen 32 is arranged between the hanging wall 35 and the bottom plate of the filter station 3.

[0061] The use area of the coarse screen 32 can be reduced by arranging the hanging wall 35, thereby reducing the construction cost, and the structural stability of the filter station 3 can be effectively improved by arranging the hanging wall 35 between the two adjacent filter station guide walls 31 or the filter station guide wall 31 and the outer wall of the filter station 3, thereby improving the operation stability of the pump station.

[0062] In the embodiment, the coarse screen 32 can be a rake-type trash cleaner commonly used in industrial production, and the up-and-down movement of the rake can remove the trash in the grid of the coarse screen 32. In the embodiment, the fine screen 33 can be a rotary grid trash cleaner commonly used in industrial production.

[0063] As shown in FIG. 4, the transition area 4 is arranged in a trumpet shape along the direction of the incoming water (that is, the transition area 4 is flared towards the right side in the figure). Figure 1 As shown in FIG. 4, the transition area 4 is arranged in a trumpet shape along the direction of the incoming water (that is, the transition area 4 is flared towards the right side in the figure). Figure 1 A plurality of second energy dissipation piers 41 are arranged in the transition area 4, and the second energy dissipation piers 41 are used for energy dissipation of the incoming water.

[0064] The sedimentation tank 2 and the transition area 4 dissipate the water flow energy through the first energy dissipation pier 21 and the second energy dissipation pier 41 respectively, thereby further reducing the kinetic energy of the water flow and the impact force on the structure of the pump station, and improving the safety of the system operation; the transition area 4 arranged in a trumpet shape along the direction of the incoming water makes the water flow have a gradual diffusion process before entering the pump station flow passage area 5, thereby effectively reducing the water flow speed, uniformly distributing the water flow, effectively dissipating the water flow energy, and reducing the stress burden of the equipment in the pump station flow passage area 5.

[0065] The pump station flow passage area 5 includes a plurality of water distribution walls 51, and a water suction head 7 of a water intake pump is arranged between the adjacent water distribution walls 51 or between the water distribution wall 51 and the outer wall of the pump station flow passage area 5. For example, as shown in FIG. 5, five water distribution walls 51 are arranged, and six pump station flow passage areas are formed between the water distribution walls 51 and between the water distribution wall 51 and the outer wall of the pump station flow passage area 5, and one water suction head 7 is arranged in each pump station flow passage area. Figure 1 As shown in FIG. 5, five water distribution walls 51 are arranged, and six pump station flow passage areas are formed between the water distribution walls 51 and between the water distribution wall 51 and the outer wall of the pump station flow passage area 5, and one water suction head 7 is arranged in each pump station flow passage area. The water distribution wall 51 in the pump station flow passage area 5 uniformly distributes the incoming water to each water suction head 7, thereby reducing the water flow turbulence caused by the excessively high local flow speed and improving the operation stability of the pump station.

[0066] Further, as shown in FIG. 6, the water distribution wall 51 can be arranged in a plurality of layers. Figure 1As shown, the second stop log gate 52 is arranged at one end of each pump station flow passage area close to the transition area 4, that is, the second stop log gate 52 is arranged between adjacent water distribution walls 51 and between the water distribution wall 51 and the outer wall of the pump station flow passage area 5, and the second stop log gate 52 is located at one end of the pump station flow passage area 5 close to the transition area 4. By controlling the opening and closing degree of the second stop log gate 52, the water flow in different flow passages of the pump station flow passage area 5 can be flexibly controlled, and the precise management of the water flow in the pump station flow passage area 5 can be realized. When the water suction head 7 needs to be replaced or repaired, the second stop log gate 52 corresponding to a flow passage in the pump station flow passage area 5 can be flexibly selected to be closed, so as to facilitate the repair operation.

[0067] The large pump station system provided in the embodiment is sequentially provided with the gate area 1, the sedimentation tank 2, the filter station 3, the transition area 4 and the pump station flow passage area 5 along the water flow direction, the water flow energy is gradually reduced through the partition design, the impact of the water flow on the internal structure of the pump station is reduced, and the problem that a large amount of seawater rushing into the pump station easily leads to instability of the pump station system is effectively solved.

[0068] Embodiment 2

[0069] On the basis of the embodiment 1, the large pump station system provided in the embodiment is arranged with at least two rows of first energy dissipation piers 21 in the sedimentation tank 2, and the two rows of first energy dissipation piers 21 are staggered, that is, the second row of first energy dissipation piers 21 is arranged at the gap position between the first row of first energy dissipation piers 21. By adopting this arrangement mode, a plurality of rows of first energy dissipation piers 21 are arranged, and the two rows of first energy dissipation piers 21 are staggered, when the water flow passes through the staggered energy dissipation piers, the flow path of the water flow becomes tortuous and changeable, the energy concentration area of the water flow is effectively broken up, the water flow speed is greatly reduced, the impact force on the subsequent area is reduced, the sedimentation and energy dissipation efficiency are improved, and the overall safety and stability of the pump station system are enhanced.

[0070] In the embodiment, at least two rows of second energy dissipation piers 41 are also arranged in the transition area 4, and the two rows of second energy dissipation piers 41 are also staggered. By staggering the two rows of second energy dissipation piers 41, the impact force and kinetic energy of the water flow can be more evenly distributed, so that more efficient energy dissipation can be achieved. When the water flow passes through the energy dissipation piers, the staggered arrangement can effectively disrupt the stability of the water flow, so that the speed of the water flow is reduced and the vortex is reduced, and the water flow is prevented from entering the downstream area too fast.

[0071] Further, as shown in Figure 1 , Figure 6 two rows of first energy dissipation piers 21 are arranged in the sedimentation tank 2, the first energy dissipation pier 21 includes a first trapezoidal energy dissipation pier 211 and a first rectangular energy dissipation pier 212, along the water inflow direction, the first row of first energy dissipation piers 21 are all first trapezoidal energy dissipation piers 211, and the second row of first energy dissipation piers 21 are first trapezoidal energy dissipation piers 211 and first rectangular energy dissipation piers 212 arranged at intervals. For example, Figure 6 , Figure 6The hollow arrow is the water direction, and the first row along the water direction is the first trapezoidal energy dissipation pier 211. Specifically, the first trapezoidal energy dissipation pier 211 can be a right trapezoidal energy dissipation pier, the inclined surface of the right trapezoidal energy dissipation pier faces the water direction, smoothly guides the high-speed incoming water, gradually reduces the water flow speed, reduces the direct impact of the water flow on the energy dissipation pier and the pool wall, the first trapezoidal energy dissipation pier 211 effectively disperses the high-speed water flow, reduces the flow rate and kinetic energy, avoids the formation of turbulent flow or vortex at the inlet of the sedimentation tank 2, and provides stable water flow conditions for the subsequent sedimentation process. Figure 6 For example, the second row along the water direction is the first trapezoidal energy dissipation pier 211 and the first rectangular energy dissipation pier 212 arranged at intervals. Specifically, the first rectangular energy dissipation pier 212 can be arranged in the middle and on both sides of the second row, and two first trapezoidal energy dissipation piers 211 can be arranged between adjacent first rectangular energy dissipation piers 212. By using different cross-sectional shapes to dissipate the energy of the water flow, the kinetic energy of the water flow is further reduced, more uniform energy dispersion is achieved, and the effect of step-by-step energy dissipation is achieved.

[0072] Embodiment 3

[0073] Based on the large pump station system of embodiment 2, as shown in Figure 1 , Figure 7 , Figure 8 indicated, a vortex reduction structure 8 is arranged below each water suction head 7. The vortex reduction structure 8 includes a first vortex reduction column 81 and a second vortex reduction column 82, and a third vortex reduction column 83 is arranged between the first vortex reduction column 81 and the second vortex reduction column 82, that is, the first vortex reduction column 81 and the second vortex reduction column 82 are respectively connected to the two ends of the third vortex reduction column 83. The first vortex reduction column 81 is connected to the outer wall of the water distribution wall 51 or the pump station flow passage area 5, the second vortex reduction column 82 is connected to the outer wall of the water distribution wall 51 or the pump station flow passage area 5, and the third vortex reduction column 83 extends a middle vortex reduction column 84 in the water direction, and extends a vertical vortex reduction column 85 upward. Specifically, the middle vortex reduction column 84 can be connected to the vertical vortex reduction column 85, and the two can be arranged vertically, and the middle vortex reduction column 84 is located directly below the water suction head 7. The middle vortex reduction column 84 of the vortex reduction structure 8 is located directly below the water suction head 7 and extends in the water direction, and the middle vortex reduction column 84 and the vertical vortex reduction column 85 can play a flow regulating role and effectively destroy the formation of vortex flow; the two ends of the third vortex reduction column 83 are respectively connected to the first vortex reduction column 81 and the second vortex reduction column 82, and the three form a U-shaped structure with an opening facing the water direction, which has a good flow guiding effect. The vortex reduction structure 8 can effectively prevent the formation of bottom vortex or wall vortex and ensure that the incoming water smoothly enters the water suction head 7.

[0074] Further, the middle vortex reduction column 84 and the vertical vortex reduction column 85 are isosceles triangular columns; as Figure 7As shown, the angle α between the first vortex reducer 81, the second vortex reducer 82, and the third vortex reducer 83 is an obtuse angle; the first vortex reducer 81, the second vortex reducer 82, and the third vortex reducer 83 are all right-angled triangular prisms.

[0075] The isosceles triangular prism-shaped central vortex-reducing column 84 and vertical vortex-reducing column 85 have a good rectification effect on the incoming water. Their symmetry can evenly disperse the impact force of the incoming water, making the water flow more stable and avoiding the formation of turbulent water flow or vortices. The obtuse angle setting of the first vortex-reducing column 81 and the second vortex-reducing column 82 allows the incoming water to converge towards the position of the suction head 7 under the guidance of the first vortex-reducing column 81 and the second vortex-reducing column 82, which has a better guiding effect. The inclined surfaces of the first vortex-reducing column 81, the second vortex-reducing column 82, and the third vortex-reducing column 83 are in contact with the incoming water, and the right angle surfaces are connected to the water distribution wall 51 or the outer wall of the pump station flow channel area 5. The structure is stable, the flow guiding effect is good, and the durability and service life of the entire vortex-reducing structure 8 are improved.

[0076] like Figure 2 This illustrates the possible flow state of water within the large pumping station system provided in this embodiment. Water flows from the intake pipe 100 into the gate area 1, passes through the main gate 11 and / or the auxiliary gate 12, enters the sedimentation tank 2, and after being dissipated by the first energy dissipation pier 21 in the sedimentation tank 2, enters the filtration station 3, as shown... Figure 2 As shown, the rightmost first stacked beam gate 34 along the direction of incoming water is closed, so no water flows through the corresponding filter station channel. The coarse screen 32 and fine screen 33 in the other filter station channels are working to filter the flowing water. The water flowing out of the filter station channel enters the transition zone 4, and after being dissipated by the second energy dissipation pier 41 in the transition zone 4, it enters the pump station channel area 5, as shown. Figure 2 As shown, the second-leftmost stacked beam gate 52 along the direction of incoming water is closed, so no water flows into the corresponding pump station flow channel area. The vortex reduction structure 8 in the other pump station flow channels plays a role in reducing the formation of bottom vortices or wall vortices near the suction head 7, ensuring that the water flows smoothly into the suction head 7.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A large scale pumping station system, characterized by, The gate area (1), the sedimentation tank (2), the filter station (3), the transition area (4) and the pump station flow channel area (5) are sequentially arranged along the water flow direction, and the anti-floating bottom plate (6) extends outward from the wall of the large pump station system; The gate area (1) is provided with at least two main gates (11), and the upper part of the two main gates (11) is further provided with at least one auxiliary gate (12), the main gate (11) and the auxiliary gate (12) are used for controlling the water in the gate area (1) to enter the sedimentation tank (2); A plurality of first energy dissipation piers (21) are arranged in the sedimentation tank (2), and the first energy dissipation piers (21) are used for energy dissipation of incoming water; A plurality of filter station guide walls (31), a plurality of coarse screens (32) and a plurality of fine screens (33) are arranged in the filter station (3), and the coarse screens (32) and the fine screens (33) are arranged between adjacent filter station guide walls (31) and between the filter station guide walls (31) and the outer wall of the filter station (3); The transition area (4) is arranged in a trumpet shape along the direction of incoming water, and a plurality of second energy dissipation piers (41) are arranged in the transition area (4), and the second energy dissipation piers (41) are used for energy dissipation of incoming water; The pump station flow channel area (5) comprises a plurality of water distribution walls (51), and the suction head (7) of the water pump is arranged between adjacent water distribution walls (51) and between the water distribution walls (51) and the outer wall of the pump station flow channel area (5).

2. A large pump station system according to claim 1, characterized in that The anti-floating bottom plate (6) extends at least two meters outward from the wall of the large pump station system.

3. A large pump station system according to claim 1, characterized in that At least two rows of first energy dissipation piers (21) are arranged in the sedimentation tank (2), and adjacent two rows of first energy dissipation piers (21) are arranged staggered.

4. A large pumping station system according to claim 3, characterized in that Two rows of first energy dissipation piers (21) are arranged in the sedimentation tank (2), the first energy dissipation piers (21) comprise first trapezoidal energy dissipation piers (211) and first rectangular energy dissipation piers (212), along the direction of incoming water, the first row of first energy dissipation piers (21) are all first trapezoidal energy dissipation piers (211), and the second row of first energy dissipation piers (21) are the first trapezoidal energy dissipation piers (211) and the first rectangular energy dissipation piers (212) arranged at intervals.

5. A large pumping station system according to claim 1, characterized in that First stop logs (34) are arranged between adjacent filter station guide walls (31) and between the filter station guide walls (31) and the outer wall of the filter station (3), and the first stop logs (34) are located at one end of the filter station (3) close to the sedimentation tank (2).

6. A large pumping station system according to claim 1, characterized in that Hanging walls (35) are arranged between adjacent filter station guide walls (31) and between the filter station guide walls (31) and the outer wall of the filter station (3), and the coarse screens (32) are located between the hanging walls (35) and the bottom plate of the filter station (3).

7. A large pumping station system according to claim 1, characterized in that A vortex-reducing structure (8) is arranged below the water suction head (7), the vortex-reducing structure (8) comprises a first vortex-reducing column (81) and a second vortex-reducing column (82), a third vortex-reducing column (83) is arranged between the first vortex-reducing column (81) and the second vortex-reducing column (82), the first vortex-reducing column (81) is connected with the water distribution wall (51) or the outer wall of the pump station flow passage area (5), the second vortex-reducing column (82) is connected with the water distribution wall (51) or the outer wall of the pump station flow passage area (5), the third vortex-reducing column (83) extends a middle vortex-reducing column (84) in the direction of incoming water, the third vortex-reducing column (83) extends a vertical vortex-reducing column (85) upward, and the middle vortex-reducing column (84) is located directly below the water suction head (7).

8. A large pumping station system according to claim 7, characterized in that The middle vortex-reducing column (84) and the vertical vortex-reducing column (85) are isosceles triangular columns, the included angle between the first vortex-reducing column (81), the second vortex-reducing column (82) and the third vortex-reducing column (83) is obtuse, and the first vortex-reducing column (81), the second vortex-reducing column (82) and the third vortex-reducing column (83) are all right triangular prisms.

9. A large pumping station system according to claim 1, characterized in that At least two rows of the second energy-dissipating piers (41) are arranged in the transition area (4), and adjacent two rows of the second energy-dissipating piers (41) are arranged staggeredly.

10. A large pumping station system according to claim 1, characterized in that Second stoplogs (52) are arranged between adjacent water distribution walls (51) and between the water distribution walls (51) and the outer walls of the pump station flow passage area (5), and the second stoplogs (52) are located at one end of the pump station flow passage area (5) close to the transition area (4).

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