A horizontal unit pump station

Abstract

This utility model discloses a horizontal pumping station, including a pump house structure, within which a water pump unit for pumping and draining is installed; it also includes a water storage and drainage structure, comprising a collection tank located within the pump house structure and an intake pool located outside the pump house structure; a gate structure is installed at the inlet end of the collection tank; the opening and closing of the gate structure enables both gravity drainage and pumping of water from the intake pool by the water pump unit; an outlet culvert structure connects to the outlet end of the collection tank; the pumping station also includes a flood control embankment, through which the outlet culvert structure passes; the pump house structure is located inside the flood control embankment. The pumping station with the above structure is simpler, more compact, and has lower construction costs, integrating water storage, gravity drainage, pumping, and flood control functions.

Description

Technical Field

[0001] This utility model belongs to the field of pump station technology, and in particular relates to a horizontal unit pump station. Background Technology

[0002] Flood control, drought relief, and flood prevention have always been important tasks in the construction and development of my country's water conservancy industry, and are also key to supporting regional economic growth, ensuring national food security, and maintaining social stability.

[0003] Horizontal pumping stations have advantages such as convenient installation and maintenance, shallow foundation excavation depth, low height of the upper pumping station building, uniform load distribution, and low requirements for the bearing capacity of the foundation. They are widely used in small and medium-sized irrigation and drainage pumping station projects.

[0004] Currently, the functional positioning of pumping station construction is often multi-dimensional. According to the planning and drainage area division results, the station site usually has both pumping and drainage functions during startup and self-draining functions during shutdown.

[0005] To achieve the above objectives, traditional pumping stations behind dikes typically use vertical units with conventional axial flow pumps or submersible axial flow pumps. The upper layer is the pumping channel, the lower layer is the self-draining channel, and the water is discharged through the same outlet culvert. However, in engineering practice, the pumping station has a deep excavation depth, large pier height, high requirements for foundation bearing capacity, and poor overall project economy.

[0006] When horizontal pumping units are selected for pumping stations, a separate layout of the pumping station and sluice gate is commonly used. This means the primary function of the horizontal pumping station is only pumping and drainage, with water exiting through a siphon-type pipeline across the dike. To achieve self-drainage, a separate self-drainage sluice gate needs to be built near the station site. This increases project costs and the number of structures penetrating the dike, creating safety hazards for the flood control dike and hindering flood control and disaster relief efforts. Furthermore, the separate construction of the pumping station and the self-drainage sluice gate makes unified scheduling and operation management difficult. The numerous and dispersed upper pump houses and gatehouses result in poor overall coordination. These problems and shortcomings severely limit the development and application of horizontal pumping station units.

[0007] Therefore, a pumping station that is simple in structure, has a reasonable and compact layout, low cost, and integrates pumping, self-draining, water storage, and flood control is not only of significant economic value, but also superior in terms of more efficient management and more significant drainage and flood control functions. Utility Model Content

[0008] Based on the above background, the purpose of this utility model is to provide a horizontal unit pumping station.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A horizontal pumping station includes a pump house structure, in which a water pump unit for pumping and draining is installed and connected.

[0011] It also includes water storage and drainage structures;

[0012] The water storage and drainage structure includes a water collection tank installed inside the pump house structure, and an inlet pool installed outside the pump house structure; a gate structure is installed and connected at the inlet end of the water collection tank; the opening and closing of the gate structure realizes both self-drainage and pumping of water from the inlet pool by the water pump unit;

[0013] The outlet end of the water collection tank is connected to an outlet culvert structure;

[0014] The pumping station also includes a flood control embankment, with an outlet culvert structure running through it; the pump house structure is located inside the flood control embankment.

[0015] Preferably, the pump house structure includes a main pump house body;

[0016] The main body of the pump house is built on the foundation of the pump house;

[0017] The main body of the pump house includes a first pump room and a second pump room that are set up independently; the pump unit includes several pumps located in the first pump room and the second pump room respectively.

[0018] Preferably, the pump has an inlet pipe installed at its inlet end for pumping water from the inlet pool, and an outlet pipe installed at its outlet end for draining water into the collection tank.

[0019] The outlet end of the water pipe is equipped with a flap valve to prevent backflow of water.

[0020] Preferably, a retaining wall is provided between the main body of the pump house and the inlet pool; the gate structure includes an inlet gate, which controls the water in the inlet pool to enter the collection tank by opening and closing the inlet gate.

[0021] Preferably, the water inlet pool includes a bottom plate with a thickness of 0.40m to 0.60m;

[0022] The bottom plate of the pool is provided with several water vents, and the lower part of the water vents is provided with multiple layers of horizontal sand and gravel filter material, each layer of filter material having a thickness of not less than 0.20m;

[0023] The bottom plate of the pool is equipped with toothed walls around the filter media. The depth of the toothed walls extends downward from the bottom layer of the filter media by 0.10m to 0.20m. The toothed walls are used to prevent the lateral loss of the filter media.

[0024] Preferably, the pump is a horizontal mixed-flow pump unit, with 1 to 3 units installed in the first pump chamber and the second pump chamber respectively;

[0025] The water inlet pipes of the pump are arranged in parallel.

[0026] The outlet pipes of the pump unit penetrate through the walls of the first pump chamber and the second pump chamber in a staggered manner;

[0027] A pump base is installed at the bottom of the pump unit.

[0028] Preferably, a lifting device for maintenance is installed at the upper end inside the main pump house body.

[0029] Preferably, a main access passage and an auxiliary access passage are constructed between the main pump house body and the flood control embankment;

[0030] People can enter the first pump chamber and the second pump chamber through the main access passage and the auxiliary access passage.

[0031] Preferably, the outlet culvert structure comprises a plurality of culvert sections;

[0032] A discharge gate is installed at the water outlet end of the outlet culvert structure.

[0033] Preferably, the upper end of the main pump house body is an upper pump house building, which is used for constructing a machine room.

[0034] The utility model has the following beneficial effects:

[0035] 1. The inverted "several"-shaped integral raft-type pump house foundation can realize reliable connection of the first pump chamber, the second pump chamber and the water collecting tank, with combination of shallow and deep parts, reasonable structure, strong integrity and good economy;

[0036] 2. Through systematic control and operation of the inlet gate, outlet gate, water pump unit, water collecting tank and outlet culvert, multiple functions such as pumped drainage, gravity drainage, water storage and flood control can be integrated, which effectively solves the technical problem that the traditional horizontal unit pump station is difficult to give consideration to both pumped drainage and gravity drainage, and has the advantages of flexible conversion and efficient operation;

[0037] 3. A plurality of outlet pipelines of the water pump unit are connected in parallel into the water collecting tank, and then uniformly pass through the embankment via the outlet culvert to discharge into the outlet receiving area, which significantly reduces the number of embankment-penetrating structures, greatly improves the integrity of the embankment section, and greatly enhances the safety and stability of the flood control embankment.

[0038] 4. The upper pump house building doubles as a machine room, and integrates lifting facilities, high-voltage switch rooms, low-voltage distribution rooms and the like, with compact structural layout, high centralization degree, intensive land use, economical cost and convenient operation and management, which can effectively promote the further application of horizontal unit pump stations in small and medium-sized irrigation and drainage hydraulic projects. Brief Description of the Drawings

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the overall structural layout of the pump station in an embodiment of this utility model;

[0041] Figure 2 This is a schematic diagram of the longitudinal section structure of the pump station section in an embodiment of this utility model;

[0042] Figure 3 This is a schematic diagram of the longitudinal section of the pump station outlet culvert in this embodiment of the present invention.

[0043] Figure 4 This is a front view structural diagram of the inlet of the channel in this embodiment of the present utility model;

[0044] Figure 5 This is a schematic diagram of the cross-sectional structure of the main pump house in an embodiment of this utility model.

[0045] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0048] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0049] Example 1

[0050] like Figure 1-5 As shown, a horizontal pumping station includes a pump house structure, within which a water pump unit for pumping and draining is assembled and connected; the water pump unit is a horizontal pump. It also includes a water storage and drainage structure.

[0051] Specifically, the water storage and drainage structure includes a water collection tank 24 installed inside the pump house structure, and an intake pool 10 installed outside the pump house structure; a gate structure is installed and connected at the water inlet end of the water collection tank 24; the water in the intake pool is discharged by self-drainage and pumped out by the water pump unit through the opening and closing of the gate structure; an outlet culvert structure is connected at the water outlet end of the water collection tank 24; the pump station also includes a flood control embankment 33, and the outlet culvert structure runs through the flood control embankment 33; the pump house structure is located inside the flood control embankment 33.

[0052] During operation, the pumping station and water storage structure described above enable the pumping units to be used reasonably according to the water level of the inlet pool 10, which not only achieves energy saving, but also enables more efficient drainage and flood control.

[0053] Specifically, when the water level in the inlet pool 10 is high, such as during continuous heavy rain, the gate structure is opened directly, and the water in the inlet pool is discharged from the collection tank 24 and the outlet culvert structure to the discharge area through the water level difference.

[0054] Conversely, when the water level in the inlet pool 10 is low, the water in the inlet pool is pumped into the collection tank by the water pump unit, and then discharged through the outlet culvert structure to achieve irrigation.

[0055] Example 2

[0056] like Figure 1-5 As shown, this embodiment discloses the specific structure of the pumping station based on the structure of embodiment 1 above.

[0057] Specifically, the pumping station includes: an inlet pool 10, a pump house structure, and an outlet culvert 30; the inlet pool 10 is located at the front end of the pump house structure.

[0058] The suction tank 10 comprises an open tank chamber structure enclosed by a tank bottom plate 11 and a forebay tank wall 12, and is in communication with several drainage diversion channels, with trash racks 133 arranged at each channel inlet 13 into the tank, so as to effectively intercept sundries such as floating objects in water and aquatic weeds.

[0059] Meanwhile, the tank bottom plate 11 adopts a C25 reinforced concrete structure with a plate thickness of 0.40m to 0.60m, a plurality of weep holes are arranged in a quincunx shape, and multiple layers of horizontal sand and gravel filter materials are arranged at the lower part of the holes, with the thickness of each layer of filter material not less than 0.20m. In order to prevent the loss of the filter materials, according to the existing construction method, tooth walls are additionally arranged around the filter materials on the tank bottom plate 11, and the depth of the tooth walls extends 0.10m to 0.20m downward beyond the bottom layer of the filter materials, so as to prevent the lateral loss of the filter materials.

[0060] The forebay tank wall 12 of the suction tank mainly adopts a composite section structure of "slope + wall", and is adjusted to a single retaining wall structure at several positions such as the channel inlets 13 into the tank and the front of the inlet gate 241.

[0061] The lower part of the composite section is a C25 plain concrete gravity retaining wall, and the part above the wall top is sloped fill with a slope ratio of 1:1.5 to 1:2; the inlet retaining wall 131 and the pre-gate retaining wall 14 both adopt a C25 reinforced concrete U-shaped trough structure, and trash rack grooves 132 are opened on the flow-facing side wall surface of the inlet retaining wall 131, which are matched with the trash racks 133.

[0062] The pump house structure includes a pump house main body 20, and the front end of the pump house main body is connected with the pre-gate retaining wall 14 of the suction tank 10.

[0063] Meanwhile, the pump house main body 20 adopts an integrally cast C25 reinforced concrete raft-type pump house foundation 21 shaped like an inverted "several" character, which is low in the middle and high at both ends.

[0064] The pump house main body 20 is constructed on the pump house foundation, which is the raft-type pump house foundation 21.

[0065] The pump house main body 20 is divided into a first pump chamber 22 and a second pump chamber 23 which are respectively arranged on both sides of the water collecting tank 24 described below, and are communicated through a pedestrian corridor 243, with a plurality of water pump units 25 installed in each pump chamber.

[0066] Moreover, the raft-type pump house foundation 21 has a low elevation and large burial depth at the section of the water collecting tank 24, which can meet the requirements for the sill elevation, water depth and the like for the self-drainage of the pumping station when it is shut down; while at the sections of the first pump chamber 22 and the second pump chamber 23, the elevation is high and the burial depth is shallow, which can adapt to the installation requirements of the water pump units 25 (the water pump units 25 include horizontal-structured pumps). The combination of deep and shallow parts features a reasonable structure, strong integrity and good economy.

[0067] Both the first pump room 22 and the second pump room 23 adopt a dry chamber type pump room structure. The interior walls are coated with cement-based penetrating crystalline waterproof coating to improve the seepage prevention effect of the pump room and ensure that the interior is dry and free of water seepage.

[0068] The pump 251 model adopts a horizontal mixed-flow pump unit. The number of units installed can be determined according to actual needs, generally 1 to 3 units are installed in each pump room.

[0069] Similar to the installation method of existing pumps, the bottom of the pump 251 is equipped with a machine base 254 (concrete structure), which is a cast-in-place C25 plain concrete structure, and is connected to the raft pump house foundation 21 by a reserved reinforcing bar (this method is a conventional method in existing building construction, and the reserved reinforcing bar increases the structural strength and stability of the machine base 254, ensuring the stability of the pump 251 during operation), so as to reduce the vibration problem caused by the pump starting and stopping.

[0070] The inlet pipes 252 of each pump 251 are arranged in a straight line (i.e., horizontally parallel), and the outlet pipes 253 pass through the walls in an interlaced manner before entering the collection tank 24 (i.e., the outlet pipes 253 pass through the wall structures of the first pump room 22 and the second pump room 23 in an interlaced manner).

[0071] The advantages of staggered drainage layout are: it can effectively avoid outflow turbulence and mutual interference, significantly reduce the number of structures penetrating the dike, greatly improve the integrity of the dike section, and further enhance the safety and stability of the flood control dike 33.

[0072] Both the aforementioned inlet pipe 252 and outlet pipe 253 are wall-penetrating steel pipes. According to the existing waterproof design, a water-stop wing ring is installed in the middle of the wall-penetrating steel pipe to prevent leakage from the outer wall of the pipe. A flap valve is installed at the end of the outlet pipe 253 to prevent backflow of water from outside the drainage area (water in the collection tank 24).

[0073] The water outlet pipe 253 of the pump 251 passes through the wall in an interlaced manner and then enters the water collection tank 24. The pump is controlled by the gate structure to switch between functions such as pumping when starting, self-draining when stopping, and normal water storage.

[0074] Specifically, the gate structure includes an inlet gate 241, which is a conventional gate disclosed in the prior art. Its opening and closing methods are conventional methods of existing gates, such as opening and closing the gate by lifting and lowering it via a threaded drive.

[0075] According to the existing method, the inlet gate 241 adopts a flat steel gate, which is placed at the front end of the water collection tank 24, and an inspection platform 242 is set at a position not less than 1.5 times the gate height.

[0076] The upper part of the main pump house 20 is the upper pump house building 26 (located at the top of the main pump house 20). The upper pump house building 26 is equipped with lifting facilities 261, which can realize the hoisting and maintenance of equipment such as water pump units 25 and inlet gate 241. Specifically, the lifting facilities 261 are conventional hoisting facilities disclosed in the prior art. If the lifting facilities 261 adopts a bridge crane, it can realize bidirectional movement along the track in both longitudinal and transverse directions, making the hoisting and maintenance of inlet gate 241 and several water pump units 25 more flexible.

[0077] Similar to existing lifting operations, a sliding rail compatible with a bridge crane is installed on the top of the upper pump house building 26. This method facilitates lifting operations during the disassembly and maintenance of pumps and motors.

[0078] In actual operation, the structural space of the upper pump house building 26 can also serve as a gate hoist room, and the pump house floor can serve as a gate hoist platform, forming an integrated construction. For example, the upper pump house building 26 can house a high-voltage switch room 264 and a low-voltage power distribution room 265, which are integrated into one machine room.

[0079] Similarly, based on the optimization of the pump station structure, the above-mentioned pump house ground and flood control dike 33 are connected by the main access channel 262 and the auxiliary access channel 263 to meet the requirements of equipment transportation and personnel passage respectively.

[0080] The outlet culvert structure includes an outlet culvert 30, which is used to discharge water from the collection tank 24. It is located at the end of the main pump house 20 (the inlet of the outlet culvert 30 is connected to the collection tank 24), passes under the flood control dike 33 (the flood control dike is used to protect the pump station from flooding), and is a water outlet channel shared by pumping and gravity drainage.

[0081] The outlet culvert 30 is a conventional drainage culvert structure disclosed in the prior art, comprising several culvert body sections 31 (the culvert body 31 adopts a C25 reinforced concrete box culvert structure, which is then connected in sequence to the outlet gate 32 and the outlet connecting section 34 described below). An outlet gate 32 for controlling drainage is installed at the outlet end of the outlet culvert 30. The outlet gate 32 is also a conventional gate for controlling drainage disclosed in the prior art (e.g., the outlet gate 32 gate body adopts a flat steel gate, and the opening and closing of the outlet gate 32 is controlled by a matching hoist to realize the function conversion of opening the gate for drainage and closing the gate for flood control).

[0082] With the same structure as the existing gate and the gate-related structures, the outlet gate 32 is installed on the gate structure, and drainage can be achieved by raising and lowering the outlet gate 32.

[0083] Those skilled in the art can understand how the outlet gate 32 controls the drainage of the outlet culvert 30 and the specific structure of the gate and the structure of the cooperating structures by consulting technical manuals and dictionaries.

[0084] The outlet gate 32 is connected to the discharge area through the outlet connection section 34. Therefore, the outlet gates 32 are connected to each other through permanent settlement joints and joint sealing sections 34. A frame 321, a gate opening and closing machine room 322, and an entrance trestle 323 are provided on the upper part of the outlet gate 32. The opening and closing of the outlet gate 32 is controlled to realize the flexible conversion between drainage and flood control functions.

[0085] Example 3

[0086] like Figure 1-5 As shown in the figure, this embodiment discloses the working principle and optimization design effect of the pumping station.

[0087] When the water level in the inlet pool 10 is low during the dry season and the water level in the outlet discharge area is high, the inlet gate 241 is closed and the outlet gate 32 is opened. Then, the pump 251 is started, and the floodwater flows into the collection tank 24 through the inlet pipe 252 and the outlet pipe 253, and then enters the outlet discharge area through the outlet culvert 30, realizing the start-up and pumping of the horizontal unit pumping station.

[0088] Conversely, when the water level in the inlet pool 10 is high during the flood season and the water level in the outlet discharge area is low, the inlet gate 241 and the outlet gate 32 are opened simultaneously, the pump unit stops, and the flap gate at the end of the outlet pipe 253 automatically closes, enabling the horizontal unit pump station to stop and drain automatically; it can take into account both pumping and self-draining, switch flexibly, and operate efficiently.

[0089] The inlet gate 241 is closed during the dry season to store water, which can serve as a supplementary water source for farmland near the dike, thus diversifying the functions of the pumping station.

[0090] It is connected to the flood control dike 33 through the main access road 262 and the auxiliary access road 263. The structure is compact, highly centralized, intensive in land use, economical in cost, and convenient in operation and management.

[0091] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A horizontal pumping station, characterized in that, Includes a pump house structure, wherein a water pump unit for pumping and draining is installed and connected inside the pump house structure; It also includes water storage and drainage structures; The water storage and drainage structure includes a water collection tank installed inside the pump house structure and an inlet pool installed outside the pump house structure; a gate structure is installed and connected at the inlet end of the water collection tank; the opening and closing of the gate structure realizes both self-drainage and pumping of water from the inlet pool by a water pump unit; The outlet end of the water collection tank is connected to an outlet culvert structure; The pumping station also includes a flood control embankment, with an outlet culvert structure running through it; the pump house structure is located inside the flood control embankment.

2. The horizontal pumping station according to claim 1, characterized in that, The pump house structure includes the main body of the pump house; The main body of the pump house is built on the foundation of the pump house; The main body of the pump house includes a first pump room and a second pump room that are set up independently; the pump unit includes several pumps located in the first pump room and the second pump room respectively.

3. The horizontal unit pumping station according to claim 2, characterized in that, The pump is equipped with an inlet pipe for pumping water from the inlet pool and an outlet pipe for discharging water into the collection tank. The outlet end of the water pipe is equipped with a flap valve to prevent backflow of water.

4. The horizontal unit pumping station according to claim 2, characterized in that, A retaining wall is provided between the main body of the pump house and the inlet pool; the gate structure includes an inlet gate, which controls the water in the inlet pool to enter the collection tank by opening and closing the inlet gate.

5. The horizontal unit pumping station according to claim 1, characterized in that, The water inlet pool includes a bottom plate with a thickness of 0.40m to 0.60m. The bottom plate of the pool is provided with several water vents, and the lower part of the water vents is provided with multiple layers of horizontal sand and gravel filter material, each layer of filter material having a thickness of not less than 0.20m; The bottom plate of the pool is equipped with toothed walls around the filter media. The depth of the toothed walls extends downward from the bottom layer of the filter media by 0.10m to 0.20m. The toothed walls are used to prevent the lateral loss of the filter media.

6. The horizontal unit pumping station according to claim 3, characterized in that, The pumps are horizontal mixed-flow pumps, with 1 to 3 units installed in the first pump chamber and the second pump chamber respectively. The water inlet pipes of the pump are arranged in parallel. The outlet pipes of the pumps pass through the walls of the first and second pump rooms in a staggered manner. An organic block is installed at the bottom of the pump.

7. The horizontal unit pumping station according to claim 2, characterized in that, The upper part of the pump house is equipped with a lifting device for maintenance.

8. The horizontal unit pumping station according to claim 2, characterized in that, A main access road and an auxiliary access road are built between the main body of the pump house and the flood control dike. Enter the first and second pump rooms through the main access channel and the auxiliary access channel.

9. The horizontal unit pumping station according to claim 1, characterized in that, The water outlet culvert structure comprises several culvert sections; A discharge gate is installed at the outlet end of the culvert structure.

10. The horizontal unit pumping station according to claim 2, characterized in that, The upper part of the main pump house is the upper pump house building, which is used to construct the machine room.

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