Large pump station system

Abstract

The invention relates to the technical field of water conservancy projects, in particular to a large pump station system which comprises a gate area, a sedimentation tank, a filter station, a transition area and a pump station runner area which are sequentially arranged in the water flow direction, an anti-floating bottom plate extends outwards from the edge of a wall of the large pump station system, and the gate area is provided with at least two main gates and at least one auxiliary gate; a plurality of first energy dissipation piers are arranged in the sedimentation tank; coarse screens and fine screens are arranged between the adjacent filter station guide walls in the filter station and between the filter station guide walls and the outer wall of the filter station; the transition area is in a horn mouth shape in the water inflow direction, and a plurality of second energy dissipation piers are arranged in the transition area. Water suction heads of water taking pumps are arranged between the adjacent water distribution walls in the pump station flow channel area and between the water distribution walls and the outer wall of the pump station flow channel area. According to the large pump station system, the anti-floating stability is improved through the anti-floating bottom plate, the water flow energy is gradually reduced through the partition design, and the problem that the pump station system is prone to being unstable due to the fact that a large amount of seawater flows into the pump station is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a large-scale pump station system. Background Art

[0002] Seawater cooling system is a cooling system that uses seawater as the cooling medium. It is widely used in industrial facilities such as power plants, chemical plants, and refineries that require a large amount of heat exchange.

[0003] The existing seawater cooling system requires the use of large pumping stations (total length exceeding 100 meters, total width exceeding 35 meters, total height exceeding 20 meters, and design flow exceeding 150,000m 3 / h) pumps seawater into the user end to cool the equipment. Since the seawater cooling system needs to be deployed at the seaside, the anti-floating stability of the existing large-scale pumping station is difficult to meet the design requirements. In addition, the water intake of large-scale pumping station systems is huge. A large amount of seawater pouring into the pumping station can easily lead to instability of the pumping station system, posing a great safety hazard. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing large-scale pumping station system, which has poor anti-buoyancy stability and is prone to instability caused by a large amount of seawater pouring into the pumping station, and to provide a large-scale pumping station system.

[0005] In a first aspect, the present invention provides a large-scale pump station system, comprising a gate area, a sedimentation tank, a filtration station, a transition area and a pump station flow channel area arranged in sequence along the direction of water flow, and an anti-floating bottom plate extending outward from the edge of the wall of the large-scale pump station system; at least two main gates are arranged in the gate area, and at least one auxiliary gate is also arranged on the upper part of the two main gates, and 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 to dissipate energy of the 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 wall and the outer wall of the filter station; the transition zone is arranged in a bell-shaped shape along the incoming water direction, and a plurality of second energy dissipation piers are arranged in the transition zone, and the second energy dissipation piers are used to dissipate energy of the incoming water; the flow channel area of ​​the pump station includes a plurality of water diversion walls, and the water suction heads of the water intake pumps are arranged between adjacent water diversion walls and between the water diversion walls and the outer wall of the flow channel area of ​​the pump station.

[0006] The large-scale pump station system provided by the present invention has an anti-floating bottom plate extending outward from the edge of the wall of the pump station system, thereby increasing the contact area between the pump station foundation and the ground, making full use of the soil pressure above the anti-floating bottom plate to resist buoyancy, and significantly enhancing the anti-floating stability of the pump station, so that it can operate safely under complex geological conditions along the coast and avoid the risk of structural damage caused by buoyancy.

[0007] The gate area is the first area where incoming water enters the pump station system and is subject to high water pressure. Through the dual design of the main and auxiliary gates, when the pressure in the gate area is too high and the main gate cannot be opened, the auxiliary gate located on the upper part of the main gate can be opened first to release the pressure, and the main gate can be opened after the pressure is reduced to prevent the gate system from failing due to excessive incoming water pressure, thereby improving the operating stability of large-scale pump station systems. Since there may be a large number of marine organisms, particulate impurities, suspended matter, etc. in seawater, the diversion wall installed in the filtration station guides the water to flow smoothly, and the coarse screen and fine screen filter large particulate impurities and fine suspended matter in the water in turn, effectively improving the water quality of the intake water. The suction head of the water intake pump is protected from being blocked or damaged by foreign objects, thereby extending the service life of the equipment; the sedimentation tank and the transition zone consume water flow energy through the first energy dissipation pier and the second energy dissipation pier respectively, further reducing the kinetic energy of the water flow and the impact force on the pump station structure, thereby improving the safety of system operation; the transition zone arranged in a bell-shaped shape along the incoming water direction allows the water flow to have a gradual diffusion process before entering the flow channel area of ​​the pump station, effectively reducing the water flow velocity and evenly dissipating the water flow, effectively dissipating the water flow energy, and reducing the stress burden on the equipment in the flow channel area of ​​the pump station; the water dividing wall in the flow channel area of ​​the pump station evenly distributes the incoming water to each suction head, thereby reducing the water flow turbulence caused by excessive local flow velocity and improving the operation stability of the pump station.

[0008] The large-scale pump station system provided by the present invention sequentially arranges a gate area, a sedimentation tank, a filtration station, a transition area and a pump station flow channel area along the water flow direction. The water flow energy is gradually reduced through zoning design, and the impact of the water flow on the internal structure of the pump station is reduced, thereby effectively solving the problem that a large amount of seawater rushing into the pump station may easily lead to instability of the pump station system.

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

[0010] The anti-floating bottom plate is extended by at least two meters, which greatly increases the force-bearing area of ​​the bottom plate, fully utilizes the soil pressure above the anti-floating bottom plate to resist buoyancy, and significantly enhances 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 tilt 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 two adjacent rows of the first energy dissipation piers are staggered.

[0012] With this arrangement, multiple rows of first energy dissipation piers are arranged, and two adjacent rows of first energy dissipation piers are arranged in a staggered manner. When water flows through the staggered energy dissipation piers, its flow path becomes tortuous and changeable, effectively breaking up the energy concentration area of ​​the water flow, greatly reducing the water flow speed, reducing the impact force on subsequent areas, 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. Along the incoming water direction, the first energy dissipation piers in the first row are all the first trapezoidal energy dissipation piers, and the first energy dissipation piers in the second row are the first trapezoidal energy dissipation piers and the first rectangular energy dissipation piers arranged at intervals.

[0014] With this arrangement, the first row of energy dissipation piers are arranged as first trapezoidal energy dissipation piers, for example, they can be right-angled trapezoidal energy dissipation piers. The slope of the right-angled trapezoid can be directed toward the incoming water direction to smoothly guide the high-speed incoming water, gradually reduce the water flow velocity, and reduce the direct impact of the water flow on the energy dissipation piers and the pool wall. The first trapezoidal energy dissipation piers can effectively break up the high-speed water flow initially, reduce the flow velocity and kinetic energy, and avoid the formation of turbulence or vortexes at the entrance of the sedimentation tank, thereby providing stable water flow conditions for the subsequent sedimentation process; the second row is provided with the first trapezoidal energy dissipation pier and the first rectangular energy dissipation pier, and the two are arranged at intervals in the second row. The water flow is dissipated through different cross-sectional shapes, further reducing the kinetic energy of the water flow, achieving a more uniform energy dispersion, and achieving a step-by-step energy dissipation effect.

[0015] Preferably, a first stopper door is provided between adjacent guide walls of the filter stations and between the guide wall of the filter station and the outer wall of the filter station, and the first stopper door is located at one end of the filter station close to the sedimentation tank.

[0016] By setting the first stop gate at one end near the sedimentation tank, the flow in the filter station can be flexibly controlled to achieve accurate management of the water flow in the filter station. When the screen in the filter station needs to be replaced or repaired, the first stop gate corresponding to a certain flow channel in the filter station can be flexibly closed to facilitate maintenance operations; when the flow in the area after the filter station is abnormal, the first stop gate can be quickly closed to prevent the water from flowing back into the sedimentation tank, ensuring the safe operation of the system.

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

[0018] By setting up suspended walls, the use area of ​​the coarse screen can be reduced and the construction cost can be reduced. At the same time, since the suspended walls are set between the guide walls of adjacent filter stations and between the guide walls of the filter stations and the outer walls of the filter stations, the structural stability of the filter stations can be effectively increased, and the operating stability of the pumping station is improved.

[0019] Preferably, a vortex reduction structure is provided below the water suction head. The vortex reduction structure includes a first vortex reduction column and a second vortex reduction column, and a third vortex reduction column is arranged between the first vortex reduction column and the second vortex reduction column. The first vortex reduction column is connected to the water diversion wall or the outer wall of the pump station flow channel area, the second vortex reduction column is connected to the water diversion wall or the outer wall of the pump station flow channel area, the third vortex reduction column extends a middle vortex reduction column towards the incoming water direction, the third vortex reduction column extends an upright vortex reduction column upwards, and the middle vortex reduction column is located directly below the water suction head.

[0020] The middle vortex reduction column of this vortex reduction structure is located directly below the water suction head and extends towards the incoming water direction. The middle vortex reduction column and the upright vortex reduction column can play a rectifying role and effectively destroy the formation of vortices; both ends of the third vortex reduction column are respectively connected to the first vortex reduction column and the second vortex reduction column, and the three form a U-shaped structure with the open end facing the incoming water direction, achieving a good flow guiding effect. This vortex reduction structure can effectively prevent the formation of bottom-attached vortices or wall-attached vortices, ensuring that the incoming water smoothly enters the water suction head.

[0021] Preferably, the middle vortex reduction column and the upright vortex reduction column are isosceles triangular columns; the included angles between the first vortex reduction column and the second vortex reduction column and the third vortex reduction column are both obtuse angles; the first vortex reduction column, the second vortex reduction column, and the third vortex reduction column are all right-angled triangular prisms.

[0022] The middle vortex reduction column and the upright vortex reduction column in the shape of isosceles triangular columns have a good rectifying 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 settings of the first vortex reduction column and the second vortex reduction column cause the incoming water to converge towards the position of the water suction head under the guidance of the first vortex reduction column and the second vortex reduction column, having a better guiding effect; the inclined surfaces of the first vortex reduction column, the second vortex reduction column, and the third vortex reduction column are in contact with the incoming water, and the right-angled surfaces are connected to the water diversion wall or the outer wall of the pump station flow channel area, with stable structure and good flow guiding effect, improving the durability and service life of the entire vortex reduction structure.

[0023] Preferably, at least two rows of the second energy dissipation piers are arranged in the transition zone, 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 its speed and vortices, and prevent the water flow from entering the downstream area too quickly.

[0025] Preferably, second stoplog gates are provided between adjacent water dividing walls and between the water dividing wall and the outer wall of the flow channel area of ​​the pump station, and the second stoplog gate is located at one end of the flow channel area of ​​the pump station close to the transition zone.

[0026] By controlling the opening and closing degree of the second stoplog door, the water flow in different channels of the pump station flow area can be flexibly controlled, realizing accurate management of the water flow in the pump station flow area. When the suction head needs to be replaced or repaired, the second stoplog door corresponding to a channel in the pump station flow area can be flexibly closed to facilitate maintenance operations.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the large-scale pump station system provided by the present invention, the anti-floating bottom plate extends outward from the wall edge of the pump station system, thereby increasing the contact area between the pump station foundation and the ground, making full use of the soil pressure above the anti-floating bottom plate to resist buoyancy, and significantly enhancing the anti-floating stability of the pump station, so that it can operate safely under complex geological conditions along the coast, avoiding the risk of structural damage caused by buoyancy;

[0029] 2. In the large-scale pump station system provided by the present invention, the gate area is the first area where the incoming water enters the pump station system and is subject to relatively high water pressure. Through the dual design of the main and auxiliary gates, when the pressure in the gate area is relatively high and the main gate cannot be opened, the auxiliary gate located on the upper part of the main gate can be opened first to release the pressure, and the main gate can be opened after the pressure is reduced to prevent the gate system from failing due to excessive incoming water pressure, thereby improving the operating stability of the large-scale pump station system. Since there may be a large number of marine organisms, particulate impurities, suspended matter, etc. in seawater, the guide wall arranged in the filtration station guides the water to flow smoothly, and the coarse screen and the fine screen filter the large particulate impurities and fine suspended matter in the water in turn, thereby effectively improving the water quality of the intake water. The suction head of the water intake pump is protected from being blocked or damaged by foreign objects, thus extending the service life of the equipment. The sedimentation tank and the transition zone consume water flow energy through the first energy dissipation pier and the second energy dissipation pier respectively, further reducing the kinetic energy of the water flow and the impact force on the pump station structure, thus improving the safety of system operation. The transition zone arranged in a bell-shaped shape along the incoming water direction allows the water flow to have a gradual diffusion process before entering the flow channel area of ​​the pump station, effectively reducing the water flow velocity and evenly dissipating the water flow, effectively dissipating the water flow energy, and reducing the stress burden on the equipment in the flow channel area of ​​the pump station. The water dividing wall in the flow channel area of ​​the pump station evenly distributes the incoming water to each suction head, thus reducing the water flow turbulence caused by excessive local flow velocity and improving the operational stability of the pump station.

[0030] 3. The large-scale pump station system provided by the present invention improves the anti-floating stability of the pump station through the anti-floating bottom plate, and arranges the gate area, sedimentation tank, filtration station, transition area and pump station flow channel area in sequence along the water flow direction. The water flow energy is gradually reduced through the zoning design, and the impact of the water flow on the internal structure of the pump station is reduced, which effectively solves the problem that a large amount of seawater rushing into the pump station may easily lead to instability of the pump station system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a plan view of a large pumping station system;

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

[0033] Figure 3 for Figure 1 Section view in the AA direction;

[0034] Figure 4 for Figure 1 Cross-sectional view in the middle BB direction;

[0035] Figure 5 for Figure 1 Cross-sectional view in CC direction;

[0036] Figure 6 It is the layout state diagram of the first trapezoidal energy dissipation pier and the first rectangular energy dissipation pier;

[0037] Figure 7 It is a partial schematic diagram of the vortex reduction structure between the two water dividing walls;

[0038] Figure 8 It is a structural schematic diagram of the vortex reduction structure.

[0039] Markings in the figure:

[0040] 1-gate area, 11-main gate, 12-auxiliary gate, 2-sedimentation tank, 21-first energy dissipation pier, 211-first trapezoidal energy dissipation pier, 212-first rectangular energy dissipation pier, 3-filtration station, 31-filter station diversion 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 diversion wall, 52-second stacked beam gate, 6-anti-floating 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 pipeline. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0042] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians 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 position relationship, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. 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 invention.

[0044] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

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

[0046] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0047] Example 1

[0048] like Figure 1-Figure 5 As shown, this embodiment provides a large-scale pump station system. The large-scale pump station system provided in this 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 rate of more than 150,000m 3 / h.

[0049] This large pumping station system is located along the direction of water flow (e.g. Figure 2 As shown, from left to right, a gate area 1, a sedimentation tank 2, a filtration station 3, a transition area 4 and a pump station flow channel area 5 are arranged in sequence.

[0050] like Figure 1 As shown, the anti-floating bottom plate 6 extends outward from the edge of the wall of the large-scale pumping station system. In this embodiment, the anti-floating bottom plate 6 can be cast integrally with the large-scale pumping station system. The distance between the edge of the anti-floating bottom plate 6 and the outer wall of the large-scale pumping station system is ≥2m, that is, the anti-floating bottom plate 6 extends outward from the wall of the large-scale pumping station system by at least two meters.

[0051] The anti-floating bottom plate 6 extends outward from the edge of the wall of the pump station system, increasing the contact area between the pump station foundation and the ground, making full use of the soil pressure above the anti-floating bottom plate 6 to resist buoyancy, significantly enhancing the anti-floating stability of the pump station, enabling it to operate safely under complex geological conditions along the coast and avoiding the risk of structural damage caused by buoyancy.

[0052] The anti-floating bottom plate 6 is extended by at least two meters, which greatly increases the force-bearing area of ​​the bottom plate, fully utilizes the soil pressure above the anti-floating bottom plate 6 to resist buoyancy, and significantly enhances the anti-floating stability of the pump station; at the same time, the extension of the anti-floating bottom plate 6 also increases the support range of the pump station system, reduces the possibility of tilting or displacement of the structure, especially in coastal areas with complex foundation conditions or high groundwater levels, and can significantly improve the stability of the structure.

[0053] like Figure 1 , Figure 4 As shown, the gate area 1 is provided with at least two main gates 11, and at least one auxiliary gate 12 is further provided on the upper part of the two main gates 11. Figure 4 As shown, four main gates 11 and two auxiliary gates 12 can be set. 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] Gate area 1 is the first area where incoming water enters the pump station system and is subject to relatively high water pressure. Through the dual design of the main and auxiliary gates 12, when the pressure in gate area 1 is relatively high and the main gate 11 cannot be opened, the auxiliary gate 12 located above the main gate 11 can be opened first to release the pressure, and then the main gate 11 can be opened after the pressure is reduced, so as to prevent the gate system from failing due to excessive incoming water pressure and improve the operating stability of the large-scale pump station system.

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

[0056] Several filter station guide walls 31, several coarse screens 32 and several fine screens 33 are arranged in the filter station 3. Coarse screens 32 and fine screens 33 are arranged between adjacent filter station guide walls 31 and between the filter station guide wall 31 and the outer wall of the filter station 3. Figure 1 As shown, 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, a coarse screen 32 and a fine screen 33 are arranged in sequence along the incoming water direction.

[0057] Since there may be a large number of marine organisms, particulate impurities, suspended matter, etc. in seawater, the guide wall set in the filtering station 3 guides the water to flow smoothly, and the coarse screen 32 and the fine screen 33 filter the large particulate impurities and fine suspended matter in the water in turn, which effectively improves the water quality, protects the water suction head 7 of the water intake pump from being blocked or damaged by foreign objects, and extends the service life of the equipment.

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

[0059] By setting the first stop 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 screen in the filter station 3 needs to be replaced or repaired, the first stop gate 34 corresponding to a certain flow channel in the filter station 3 can be flexibly closed to facilitate maintenance operations; when the flow in the area after the filter station 3 is abnormal, the first stop gate 34 can be quickly closed to prevent the water from flowing back into the sedimentation tank 2, thereby ensuring the safe operation of the system.

[0060] Further, such as Figure 3 , Figure 5As shown, a hanging wall 35 is also arranged in each filter station flow channel, and the hanging wall 35 connects two adjacent filter station guide walls 31 or adjacent filter station guide walls 31 and the outer wall of the filter station 3, and a coarse screen 32 is arranged under the hanging wall 35, that is, hanging walls 35 are arranged between adjacent filter station guide walls 31 and between the filter station guide wall 31 and the outer wall of the filter station 3, and the coarse screen 32 is located between the hanging wall 35 and the bottom plate of the filter station 3.

[0061] By setting up the hanging wall 35, the use area of ​​the coarse screen 32 can be reduced and the construction cost can be reduced. At the same time, since the hanging wall 35 is set between the guide walls 31 of the adjacent filter stations and between the guide walls 31 of the filter station and the outer wall of the filter station 3, the structural stability of the filter station 3 can be effectively increased, and the operating stability of the pump station is improved.

[0062] In this embodiment, the coarse screen 32 can use a rake bucket type cleaning machine commonly used in industrial production practice, and the rake bucket can move up and down to remove dirt in the grid of the coarse screen 32. In this embodiment, the fine screen 33 can use a rotary grid cleaning machine commonly used in industrial production practice.

[0063] like Figure 1 As shown, the transition zone 4 is arranged in a bell-shaped manner along the incoming water direction (i.e., the transition zone 4 faces Figure 1 A plurality of second energy dissipation piers 41 are arranged in the transition zone 4, and the second energy dissipation piers 41 are used to dissipate energy of the incoming water.

[0064] The sedimentation tank 2 and the transition zone 4 consume water flow energy through the first energy dissipation pier 21 and the second energy dissipation pier 41 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 zone 4 arranged in a bell-shaped shape along the incoming water direction allows the water flow to have a gradual diffusion process before entering the pump station flow area 5, effectively reducing the water flow velocity and evenly dissipating the water flow, effectively dissipating the water flow energy, and reducing the stress burden on the equipment in the pump station flow area 5.

[0065] The pump station flow channel area 5 includes a plurality of water dividing walls 51, and water suction heads 7 of water intake pumps are arranged between adjacent water dividing walls 51 and between the water dividing walls 51 and the outer wall of the pump station flow channel area 5. Figure 1 As shown, five water dividing walls 51 are provided, and six pump station flow channel areas are formed between the water dividing walls 51 and between the water dividing walls 51 and the outer wall of the pump station flow channel area 5, and a water suction head 7 is provided in each pump station flow channel area. The water dividing walls 51 in the pump station flow channel area 5 evenly distribute the incoming water to each water suction head 7, reduce the water flow turbulence caused by excessive local flow velocity, and improve the operational stability of the pump station.

[0066] Further, such as Figure 1As shown, a second stopcock door 52 is provided at one end of each flow channel in the flow channel area of ​​the pump station near the transition zone 4, that is, a second stopcock door 52 is provided between adjacent water dividing walls 51 and between the water dividing wall 51 and the outer wall of the flow channel area 5 of the pump station, and the second stopcock door 52 is located at one end of the flow channel area 5 of the pump station near the transition zone 4. By controlling the opening and closing degree of the second stopcock door 52, the water flow in different flow channels in the flow channel area 5 of the pump station can be flexibly controlled to achieve accurate management of the water flow in the flow channel area 5 of the pump station. When the suction head 7 needs to be replaced or repaired, the second stopcock door 52 corresponding to a certain flow channel in the flow channel area 5 of the pump station can be flexibly selected to be closed for easy maintenance operations.

[0067] The large-scale pump station system provided in this embodiment is provided with a gate area 1, a sedimentation tank 2, a filtration station 3, a transition area 4 and a pump station flow channel area 5 in sequence along the water flow direction. The water flow energy is gradually reduced through zoning design, and the impact of the water flow on the internal structure of the pump station is reduced, thereby effectively solving the problem that a large amount of seawater rushing into the pump station may easily lead to instability of the pump station system.

[0068] Example 2

[0069] On the basis of Example 1, the large-scale pump station system provided in this embodiment has at least two rows of first energy dissipation piers 21 arranged in the sedimentation tank 2, and two adjacent rows of first energy dissipation piers 21 are arranged in a staggered manner, that is, the latter row of first energy dissipation piers 21 are arranged in the gap between the former row of first energy dissipation piers 21. With this arrangement, multiple rows of first energy dissipation piers 21 are arranged, and two adjacent rows of first energy dissipation piers 21 are arranged in a staggered manner. When the water flows through the staggered energy dissipation piers, its flow path becomes tortuous and changeable, which effectively breaks up the energy concentration area of ​​the water flow, greatly reduces the water flow speed, reduces the impact force on the subsequent area, improves the sedimentation and energy dissipation efficiency, and enhances the overall safety and stability of the pump station system.

[0070] In this embodiment, at least two rows of second energy dissipation piers 41 are also arranged in the transition zone 4, and two adjacent rows of second energy dissipation piers 41 are also arranged in a staggered manner. By staggering the two adjacent rows of second energy dissipation piers 41, 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 its speed, reduce vortices, and prevent the water flow from entering the downstream area too quickly.

[0071] Further, such as Figure 1 , Figure 6 As shown, two rows of first energy dissipation piers 21 are arranged in the sedimentation tank 2. The first energy dissipation piers 21 include first trapezoidal energy dissipation piers 211 and first rectangular energy dissipation piers 212. Along the water flow 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. Figure 6 For example, Figure 6The hollow arrow indicates the water inlet direction. Along the water inlet direction, the first row is all the first trapezoidal energy dissipating piers 211. Specifically, the first trapezoidal energy dissipating piers 211 can be right trapezoidal energy dissipating piers. The inclined surface of the right trapezoidal energy dissipating pier faces the water inlet direction, smoothly guiding the high-speed incoming water, gradually reducing the water flow velocity, and reducing the direct impact of the water flow on the energy dissipating piers and the pool wall. The first trapezoidal energy dissipating piers 211 effectively disperse the high-speed water flow initially, reduce the flow velocity and kinetic energy, avoid the formation of turbulence or vortices at the entrance of the sedimentation tank 2, and provide stable water flow conditions for the subsequent sedimentation process. Taking Figure 6 as an example, the second row along the water inlet direction is the first trapezoidal energy dissipating piers 211 and the first rectangular energy dissipating piers 212 arranged at intervals. Specifically, the middle and both sides of the second row can be set as the first rectangular energy dissipating piers 212, and two first trapezoidal energy dissipating piers 211 can be arranged between adjacent first rectangular energy dissipating piers 212. The water flow is energy dissipated through different cross-sectional shapes, further reducing the water flow kinetic energy, achieving more uniform energy dispersion, and achieving the effect of step-by-step energy dissipation.

[0072] Embodiment 3

[0073] Based on Embodiment 2, the large pumping station system provided in this embodiment, as Figure 1 、 Figure 7 、 Figure 8 shown, 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 both ends of the third vortex reduction column 83. The first vortex reduction column 81 is connected to the water diversion wall 51 or the outer wall of the pumping station flow channel area 5, the second vortex reduction column 82 is connected to the water diversion wall 51 or the outer wall of the pumping station flow channel area 5, the third vortex reduction column 83 extends a middle vortex reduction column 84 in the water inlet direction, and the third vortex reduction column 83 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 vertically arranged. The middle vortex reduction column 84 is located directly below the water suction head 7. The middle vortex reduction column 84 of this vortex reduction structure 8 is located directly below the water suction head 7 and extends in the water inlet direction. The middle vortex reduction column 84 and the vertical vortex reduction column 85 can play a rectifying role and effectively destroy the formation of vortices; both 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 the opening facing the water inlet direction, playing a good guiding effect. This vortex reduction structure 8 can effectively prevent the formation of bottom-attached vortices or wall-attached vortices and ensure the smooth entry of the incoming water into the water suction head 7.

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

[0075] The middle vortex reducing column 84 and the vertical vortex reducing column 85 in the shape of an isosceles triangular prism have a good rectifying effect on the incoming water, and 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 vortex; the obtuse angle setting of the first vortex reducing column 81 and the second vortex reducing column 82 allows the incoming water to converge toward the position of the water 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-angled surfaces are connected to the water dividing wall 51 or the outer wall of the flow channel area 5 of the pump station, so the structure is stable and the diversion effect is good, thereby improving the durability and service life of the entire vortex reducing structure 8.

[0076] like Figure 2 The figure shows the possible flow state of water in the large pump station system provided in this embodiment. Water flows from the water intake pipe 100 into the gate area 1, passes through the main gate 11 and / or the auxiliary gate 12 into the sedimentation tank 2, and then enters the filtering station 3 after dissipating energy through the first energy dissipation pier 21 in the sedimentation tank 2. Figure 2 As shown in FIG. 1 , the first stop gate 34 on the far right along the incoming water direction is closed, so no water flows through the corresponding filter station flow channel, and the coarse screens 32 and fine screens 33 in the remaining filter station flow channels work to filter the flowing water, and the water flowing out of the filter station flow channel enters the transition area 4, and after dissipating energy through the second energy dissipation pier 41 in the transition area 4, enters the pump station flow channel area 5, as shown in FIG. Figure 2 As shown, the leftmost second stop gate 52 along the incoming water direction is closed, so no water flows into the corresponding flow channel of the pump station flow channel area, and the vortex reduction structure 8 in the flow channel of the remaining pump station flow channel areas plays a role, reducing the formation of bottom vortex or wall vortex near the suction head 7, ensuring that the water flows smoothly into the suction head 7.

[0077] The above description is only 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 in the protection scope of the present invention.

Claims

1. A large pump station system, characterized in that: It comprises a gate area (1), a sedimentation tank (2), a filtering station (3), a transition area (4) and a pump station flow channel area (5) which are arranged in sequence along the water flow direction, and an anti-floating bottom plate (6) extends outward from the edge of the wall of the large pump station system; The gate area (1) is provided with at least two main gates (11), and at least one auxiliary gate (12) is further provided on the upper parts of the two main gates (11), and the main gates (11) and the auxiliary gates (12) are used to control 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 to dissipate energy 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); 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 zone (4) is arranged in a bell-mouth shape along the incoming water direction, and a plurality of second energy dissipation piers (41) are arranged in the transition zone (4), and the second energy dissipation piers (41) are used to dissipate energy of the incoming water; The pump station flow channel area (5) comprises a plurality of water dividing walls (51), and water suction heads (7) of water intake pumps are arranged between adjacent water dividing walls (51) and between the water dividing walls (51) and the outer walls of the pump station flow channel area (5).

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

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

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

5. A large-scale pump station system according to claim 1, characterized in that: A first stopper door (34) is provided between adjacent filter station guide walls (31) and between the filter station guide wall (31) and the outer wall of the filter station (3). The first stopper door (34) is located at one end of the filter station (3) close to the sedimentation tank (2).

6. A large-scale pump station system according to claim 1, characterized in that: Suspended walls (35) are provided 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 screen (32) is located between the suspended wall (35) and the bottom plate of the filter station (3).

7. A large-scale pump station system according to claim 1, characterized in that: A vortex reduction structure (8) is arranged below the water suction head (7), the vortex reduction structure (8) comprising a first vortex reduction column (81) and a second vortex reduction column (82), a third vortex reduction column (83) being arranged between the first vortex reduction column (81) and the second vortex reduction column (82), the first vortex reduction column (81) being connected to the water dividing wall (51) or the outer wall of the flow channel area (5) of the pump station, the second vortex reduction column (82) being connected to the water dividing wall (51) or the outer wall of the flow channel area (5) of the pump station, the third vortex reduction column (83) extending a middle vortex reduction column (84) in the direction of incoming water, the third vortex reduction column (83) extending a vertical vortex reduction column (85) upwards, the middle vortex reduction column (84) being located directly below the water suction head (7).

8. A large-scale pump 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 prisms; the angles between the first vortex reducing column (81) and the second vortex reducing column (82) and the third vortex reducing column (83) are all obtuse angles; the first vortex reducing column (81), the second vortex reducing column (82), and the third vortex reducing column (83) are all right-angled triangular prisms.

9. A large-scale pump station system according to claim 1, characterized in that: At least two rows of the second energy dissipation piers (41) are arranged in the transition zone (4), and two adjacent rows of the second energy dissipation piers (41) are arranged in a staggered manner.

10. A large-scale pump station system according to claim 1, characterized in that: Second stoplog gates (52) are provided between adjacent water dividing walls (51) and between the water dividing walls (51) and the outer wall of the flow channel area (5) of the pump station. The second stoplog gates (52) are located at one end of the flow channel area (5) of the pump station close to the transition area (4).

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