Water taking system
By using semi-sealed inlet channels and multi-layer interception units in the water intake system, the problem of impeller damage due to sediment in the prior art is solved, and the water flow filtration and system life are improved, adapting to changes in water levels in different seasons, and convenient for maintenance.
Patent Information
- Application Number
- CN202411386582.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-01-07
AI Technical Summary
In heavy rain or high water level by the river, the existing water pump system is prone to inhaling a large amount of silt, sand, particulate matter, and debris, resulting in frequent damage to the impeller, shortening its service life, and difficulty in maintenance and maintenance.
A water intake system including semi-sealed water intake inlet channel and multi-layer interception unit is designed, and the water inlet barrier, sand barrier curtain, gate valve and sand extraction device are used to prevent water flow from entering the pump room without filtering, intercepting and filtering the water surface. Floating objects and silts ensure water quality and isolate water sources for maintenance when needed.
It effectively prevents debris from entering the pump room, extends the service life of the water intake pump, improves the stability and maintenance convenience of the system, and adapts to changes in water levels in different seasons.
Smart Images
Figure CN119266336A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of surface water intake equipment, and in particular to a water intake system. Background Art
[0002] The water inlet channel of the existing water intake pump house is a trumpet-shaped structure, and the river water enters the water intake of the water intake pump along the inlet channel. The water intake pump currently used is manufactured by Shanghai Liancheng Pump Industry, model SLG85-60-2 vertical multi-stage centrifugal pump. The original design of the water intake pump system is two-in-one standby operation, and the flow rate of a single water intake pump is 80m 3 / h, head 129m, motor power 45kW, total length of water intake pipeline 5.4km.
[0003] In the prior art, the rotor assembly of a vertical multi-stage centrifugal pump is made of stainless steel and consists of 6 stages of moving blades and stationary blades, and each stage of blades is fixed by spot welding.
[0004] However, the accumulation of silt in the inlet channel and the water intake of the water pump can easily cause silt and sand to be pumped into the water pump, causing damage to the water pump impeller or even breakage. Especially in heavy rain or high water levels on the river bank, the impeller damage is more obvious and frequent. The water source cannot be isolated from the inlet channel to the water intake of the water pump, which seriously affects future maintenance and repairs. In summer, water hyacinths and other debris often float on the surface of the river, and the water level difference is large in winter and summer. When it rains heavily or the water level is high on the river bank, water will flow in from both sides of the water inlet channel. A large amount of river water containing silt, particles, and debris will flow into the water well and be sucked into the pump body, causing frequent damage to the impeller. When the original impeller of the water pump encounters fine sand during operation, the blades will break, greatly reducing the service life of the rotor assembly. Summary of the invention
[0005] In order to solve the problems existing in the prior art, the present invention provides a water intake system that can adapt to water levels in different seasons and prevent river water from entering the water intake channel from non-designed water intake positions, thereby ensuring the quality of incoming water and improving the life of the system.
[0006] To achieve the above object, the present invention adopts the following scheme:
[0007] The present invention provides a water intake system, comprising:
[0008] A water intake pump, wherein the water intake pump takes water from a fore pool of a water intake pump room;
[0009] The forebay of the water intake pump house is connected to the outlet of the water intake inlet channel;
[0010] A water intake inlet channel is provided in the open water area and is used to introduce water into the forebay of the water intake pump house;
[0011] A first interception unit is arranged at the periphery of the entrance of the water intake inlet channel and maintained at the water surface height, and is used to intercept floating objects on the water surface and floating sand in the water;
[0012] A second interception unit is provided at the entrance of the water intake inlet channel to further filter the water flow entering the forebay of the water intake pump house;
[0013] The water intake inlet channel is a semi-sealed structure, which is open only at the inlet and outlet. Water flows from the open water area through the inlet, flows through the water intake inlet channel, and enters the water intake pump room front pool through the outlet.
[0014] In some embodiments, the second intercepting unit includes a trash rack and a track, the track is disposed at the entrance, the trash rack is mounted on the track, and the trash rack cooperates with the track to displace in a vertical direction.
[0015] In some embodiments, a gate valve is further included, which is arranged at the outlet of the water intake channel and is used to close the gate valve to seal the outlet when maintenance is required.
[0016] In some embodiments, the first interception unit includes a float and a sand-trapping curtain, wherein the float is used to maintain a height above the water surface to preliminarily intercept floating objects on the water surface; the sand-trapping curtain is suspended under the float to preliminarily intercept floating sand in the water, and the mesh size of the sand-trapping curtain ranges from 300 to 500 mesh.
[0017] In some embodiments, a sac-like structure is provided at the lower end of the sand-trapping curtain, and a filler is contained inside the sac-like structure, so that the sand-trapping curtain remains in an unfolded state in the water.
[0018] In some embodiments, the water intake channel has a top platform, and a movable cover is also provided on the top platform.
[0019] In some embodiments, a fence is provided on the top platform to prevent personnel from falling during operation.
[0020] In some embodiments, a sand pumping device is also provided on the top platform, and the staff regularly opens the movable cover and uses the sand pumping device to extract the silt deposited at the bottom of the water intake channel.
[0021] In some embodiments, a sand barrier is further included. The sand barrier is arranged outside the inlet and outside the outlet, higher than the bottom surface thereof, and is used to intercept deposited silt. Water flows through the sand barrier outside the inlet and enters the inlet, and then flows through the sand barrier outside the outlet and enters the outlet.
[0022] In some embodiments, the impeller of the water intake pump is cast in one piece.
[0023] The beneficial effects of the present invention are:
[0024] The water intake system provided by the present invention, by providing a semi-closed water intake inlet channel and a second interception unit at the outlet, prevents the water flow from entering the water intake pump without being filtered when the water level rises, thereby adapting to the water intake work of water levels in different seasons and always filtering the debris and silt in the water, which can effectively improve the working life of the water intake pump. Moreover, by providing the first interception unit that is always maintained at the water surface height, it can further adapt to the water intake work of water levels in different seasons and can always filter the debris and silt on the water surface.
[0025] In some embodiments, a gate valve is also provided at the outlet of the water intake inlet channel, which can effectively isolate the water source between the water intake inlet channel and the front pool of the water intake pump room, so as to facilitate maintenance work.
[0026] In some embodiments, a floating ball enclosure is provided to filter out large floating objects in advance, and a sand-trapping curtain is hung under the floating ball to intercept floating sand in the water in advance, further reducing the risk of the water intake system. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic diagram of the overall structure of a water intake system in an embodiment of the present invention;
[0028] Figure 2 A cross-sectional view of a water intake pump room of a water intake system in an embodiment of the present invention;
[0029] Figure 3 A schematic diagram of a trash rack structure of a water intake system in an embodiment of the present invention;
[0030] Figure 4 The present invention is a schematic diagram of a sand-trapping curtain structure of a water intake system in an embodiment of the present invention.
[0031] Reference numerals:
[0032] 1. Water intake pump; 2. Forebay of water intake pump house; 3. Water intake inlet channel; 4. Trash rack; 5. Gate valve; 6. Movable cover; 7. Fence; 8. Sand barrier; 9. Float; 10. Steel pipe; 11. Longitudinal beam; 12. Horizontal beam; 13. Side beam; 14. Wire filter; 21. Sand barrier curtain; 22. Capsular structure. DETAILED DESCRIPTION
[0033] In order to make the technical solutions and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be fully described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0035] The original water intake system in the prior art does not have the functions of sand blocking, sand removal, isolation, etc. The water intake pump draws water from the riverside, and the water intake pump often sucks in mud, sand or floating objects, causing the water intake pump impeller to frequently get stuck, break, or the pump body to trip and stop operating, resulting in frequent equipment failures or damage, which greatly affects the stability of production water.
[0036] In order to solve the above problems, the embodiments of the present invention provide a water intake system with integrated functions such as sand interception, sand removal, and isolation. The impeller is suitable for surface water containing more silt, sand, humus, and floating objects; a new type of "sand interception curtain" is adopted, which can float on the water surface according to the change of water level, intercepting large floating objects on the water surface and floating sand in the water; the sediment in the sand interception bank or water intake channel can be cleaned regularly; a gate valve is added to make the water suction well have the conditions for isolation, cleaning and maintenance of the pump inlet door. The impeller of the water intake pump has the characteristics of whole-section casting, wear resistance, corrosion resistance, and oxidation resistance, ensuring the safe and stable operation of the water intake pump, that is, a reliable surface water intake method. Specifically, the water intake system includes a water intake pump, a water intake pump room front pool, a water intake inlet channel, a first interception unit, and a second interception unit. The water intake pump draws water from the forebay of the water intake pump house; the forebay of the water intake pump house is connected to the outlet of the water intake inlet channel; the water intake inlet channel is arranged in the open water area, and is used to introduce water into the forebay of the water intake pump house; the first interception unit is arranged at the periphery of the entrance of the water intake inlet channel, and is maintained at the water surface height, and is used to intercept floating objects on the water surface and floating sand in the water; the second interception unit is arranged at the entrance of the water intake inlet channel, and further filters the water flow entering the forebay of the water intake pump house; wherein the water intake inlet channel is a semi-sealed structure, which is opened only at the inlet and the outlet, and the water flows from the open water area through the inlet, flows through the water intake inlet channel, and enters the forebay of the water intake pump house through the outlet.
[0037] In some embodiments, Figure 1 and Figure 2As shown, the present invention provides a water intake system, including: a water intake pump 1, which takes water from a forebay of a water intake pump room, and its impeller is cast in one piece, and has better corrosion resistance and structural performance than traditional impellers, and has a longer service life; a forebay 2 of a water intake pump room, which is arranged in front of the water intake pump 1 and is connected to the outlet of a water intake inlet channel 3; the water intake inlet channel 3 is arranged in an area B adjacent to a water area A, and its inlet is arranged in an open water area A, for introducing water into the forebay 2 of the water intake pump room; a second interception unit includes a trash rack 4 and a lifting track, the trash rack 4 is arranged at the inlet of the water intake inlet channel 3, and filters the water flow entering the forebay 2 of the water intake pump room, and a lifting track is arranged at the inlet, and the trash rack 4 is connected to the lifting track It can be displaced in the vertical direction to facilitate regular cleaning and maintenance; wherein, the water intake inlet channel 3 is a semi-sealed structure, which is only open at the inlet and outlet. Water flows from the open water through the inlet, flows through the water intake inlet channel, and enters the water intake pump room front pool 2 through the outlet. The water intake inlet channel 3 has a top platform, and a movable cover plate 6 is arranged on the top platform. A fence 7 is arranged on the top platform to prevent personnel from falling during operation. A sand pumping device is arranged on the top platform, and the sand pumping device includes a sand pump and a sand pumping pipe connected to the sand pump. The staff regularly opens the movable cover plate 6 and uses the sand pumping pipe to extract the sediment deposited at the bottom of the water intake inlet channel 3 to desilt and clean the sand. In a preferred embodiment, three water intake pumps 1 and three water intake pump room front pools 2 are used. The three water intake pump room front pools 2 respectively store water for the corresponding water intake pumps 1 to ensure that the water intake pumps 1 can supply water stably and reliably.
[0038] Since the water intake inlet channel 3 is sealed with concrete or steel plates, river water cannot flow into the water intake inlet from both sides when the water level is high, but enters from a specific inlet after being blocked by the trash rack 4 and the sand barrier 8, which greatly reduces the amount of silt, particles and debris contained in the river water.
[0039] The trash rack 4 is a porous mesh flow-blocking material, which has a three-dimensional mesh structure, which increases the contact surface area between the water body and the material, slows down the flow rate of the water body in the mesh, and increases the contact time. Figure 3 As shown, the trash rack 4 includes a longitudinal beam 11, a transverse beam 12, a side beam 13, and a wire filter 14. The mesh number of the wire filter 14 ranges from 100 meshes to 200 meshes, which can effectively filter larger debris or particles in the water.
[0040] In some embodiments, a gate valve 5 is further included. The gate valve 5 is arranged at the outlet of the water intake channel and is usually kept in an open state. When maintenance is required, the gate valve 5 is closed to seal the outlet.
[0041] In some embodiments, a sand barrier 8 is also included. The sand barrier 8 is arranged outside the inlet and the outlet, higher than the bottom surface thereof, and is used to intercept deposited silt. It can block deposited particles or debris that sink to the bottom, and regularly remove the sediment at the sand barrier in the water intake channel 3 through a sand pumping device. The water flows into the inlet after passing through the sand barrier outside the inlet, and then enters the outlet after passing through the sand barrier outside the outlet.
[0042] In some embodiments, Figure 1 and Figure 4 As shown, the first interception unit includes a float 9 and a sand-blocking curtain 21. The float 9 is installed at the periphery of the entrance of the water intake inlet channel 3 for enclosure, and can always maintain the height of the water surface to preliminarily block floating objects such as algae on the water surface. The float 9 is fixed to the periphery of the entrance of the water intake inlet channel 3 by a steel wire rope on a galvanized steel pipe 10, and is kept on the water surface by the buoyancy of the water. It moves longitudinally along the steel pipe 10 with the rise and fall of the water surface to intercept floating objects. The sand-blocking curtain 21 is suspended below the float 9 and arranged in a uniform mesh to preliminarily block floating sand in the water; preferably, a bladder structure 22 is also provided at the lower end of the sand-blocking curtain 21, and the bladder structure 22 contains fillers inside, which is conducive to the net-like expansion of the sand-blocking curtain 21, and the lower end naturally penetrates vertically to the bottom of the water, effectively blocking suspended matter in the water, accelerating the sedimentation speed, and ensuring the sand-blocking curtain 21 The effect of intercepting sediment. From the float 9 to the entrance of the water intake inlet channel 3, a trash rack 4 is provided to block floating objects or debris passing through the float, which is the second line of defense to prevent floating objects or debris from entering the water intake pump room forebay 2. Preferably, a finished ABS (acrylonitrile-butadiene-styrene) float is used, and the mesh number of the sand-blocking curtain 21 ranges from 300 mesh to 500 mesh. A gate valve 5 is provided at the outlet of the water intake inlet channel 3, which is usually in an open state and is lowered and closed during maintenance to isolate water from flowing into the water intake pump room forebay. A submersible pump is provided in conjunction with the gate valve 5, which can pump out water that has partially leaked into the forebay to ensure a low water level in the forebay, so that the pipes and valves in the water intake pump room can be maintained and replaced. A platform is added above the section of the channel from the gate valve 5 to the entrance of the water intake inlet channel 3, and is paved with steel plates. The steel plates can be opened regularly to use a sand pumping device to remove the silt in the inlet channel, thereby effectively preventing silt from being sucked into the pump for a long time and causing damage to the pump.
[0043] In a preferred embodiment, the gate valve 5 at the outlet of the water intake inlet channel 3 is replaced with a trash rack, which can further filter the water flow entering the water intake pump room forebay 2. When maintenance is required, the trash rack is replaced with the gate valve 5, so that the water source can be isolated during maintenance work and the entrance door in the pump room can be repaired.
[0044] In some embodiments, the trash rack 4 is arranged in a track pre-embedded by concrete pouring.
[0045] In the water intake system provided in the embodiment of the present invention, the water intake pump 1 uses an impeller suitable for surface water containing more silt, sand, humus and floating objects. The impeller is cast with cast iron, and the blades and shaft are an integral casting, which greatly reduces the risk of welding fracture; the new type of "sand curtain" is set up, which can float on the water surface according to the changes in water level and block floating objects or floating sand on the water surface; the trash rack is set up as a second line of defense to block floating objects or debris; the sand pumping device can regularly clean the sediment in the sand barrier or water intake channel; the gate valve is set up to isolate the water intake pump suction well, providing convenient conditions for regular cleaning of the suction well and maintenance of the pump inlet valve.
[0046] In the description of this specification, reference to the terms "one embodiment" and "example" means that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the combination in a suitable manner in the relative embodiment or example.
[0047] It must be pointed out that the description of the above embodiments is not intended to be limiting but only to help understand the core idea of the present invention. For ordinary technicians in this technical field, any improvements to the present invention and alternatives equivalent to the product, without departing from the principles of the present invention, also fall within the scope of protection of the claims of the present invention.
Claims
1. A water intake system, characterized in that: include: A water intake pump, wherein the water intake pump takes water from a fore pool of a water intake pump room; The forebay of the water intake pump house is connected to the outlet of the water intake inlet channel; A water intake inlet channel is provided in the open water area and is used to introduce water into the forebay of the water intake pump house; A first interception unit is arranged at the periphery of the entrance of the water intake inlet channel and maintained at the water surface height, and is used to intercept floating objects on the water surface and floating sand in the water; A second interception unit is provided at the entrance of the water intake inlet channel to further filter the water flow entering the forebay of the water intake pump house; The water intake inlet channel is a semi-sealed structure, which is open only at the inlet and outlet. Water flows from the open water area through the inlet, flows through the water intake inlet channel, and enters the water intake pump room front pool through the outlet.
2. The water intake system according to claim 1, characterized in that: The second intercepting unit comprises a trash rack and a track, wherein the track is arranged at the entrance, the trash rack is mounted on the track, and the trash rack cooperates with the track to be displaced in a vertical direction.
3. The water intake system according to claim 1, characterized in that: It also includes a gate valve, which is arranged at the outlet of the water intake inlet channel and is used to close the gate valve to seal the outlet when maintenance is required.
4. The water intake system according to claim 1, characterized in that: The first interception unit includes a float and a sand-blocking curtain. The float is used to maintain a water surface height to preliminarily block floating objects on the water surface; the sand-blocking curtain is suspended below the float to preliminarily block floating sand in the water, and the mesh size of the sand-blocking curtain ranges from 300 to 500 meshes.
5. The water intake system according to claim 4, characterized in that: A sac-like structure is provided at the lower end of the sand-trapping curtain, and a filler is contained inside the sac-like structure, so that the sand-trapping curtain remains in an unfolded state in the water.
6. The water intake system according to claim 1, characterized in that: The water intake channel has a top platform, and a movable cover is arranged on the top platform.
7. The water intake system according to claim 6, characterized in that: The top platform is also provided with a fence to prevent personnel from falling during operation.
8. The water intake system according to claim 6, characterized in that: The top platform is also provided with a sand pumping device. The staff opens the movable cover plate regularly and uses the sand pumping device to extract the sediment deposited at the bottom of the water intake channel.
9. The water intake system according to claim 1, characterized in that: It also includes a sand barrier, which is arranged on the outside of the inlet and the outside of the outlet, higher than the bottom surface thereof, and is used to intercept deposited silt. Water flows through the sand barrier outside the inlet and enters the inlet, and then flows through the sand barrier outside the outlet and enters the outlet.
10. The water intake system according to claim 1, characterized in that: The impeller of the water intake pump is cast in one piece.