CN117026902B - Sewage blocking structure for water intake pump station and cleaning method thereof - Google Patents
Sewage blocking structure for water intake pump station and cleaning method thereof Download PDFInfo
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- CN117026902B CN117026902B CN202311301287.7A CN202311301287A CN117026902B CN 117026902 B CN117026902 B CN 117026902B CN 202311301287 A CN202311301287 A CN 202311301287A CN 117026902 B CN117026902 B CN 117026902B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 334
- 238000004140 cleaning Methods 0.000 title claims abstract description 24
- 230000000903 blocking effect Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000010865 sewage Substances 0.000 title description 8
- 239000012535 impurity Substances 0.000 claims abstract description 49
- 238000001179 sorption measurement Methods 0.000 claims abstract description 18
- 230000008602 contraction Effects 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 23
- 238000001914 filtration Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 8
- 238000012643 polycondensation polymerization Methods 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000010813 municipal solid waste Substances 0.000 claims 7
- 230000001681 protective effect Effects 0.000 abstract description 9
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 27
- 239000012530 fluid Substances 0.000 description 13
- 238000013461 design Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 6
- 230000003749 cleanliness Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
- E02B5/085—Arresting devices for waterborne materials, e.g. gratings
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/074—Arrangement of water treatment devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to the technical field of water supply and dirt blocking of hydraulic engineering, in particular to a dirt blocking structure for a water taking pump station and a cleaning method thereof, comprising a pump station cofferdam which encloses an operation well is arranged at a runner of a pump station pool dam, and the pump station cofferdam forms a first water taking channel and a second water taking channel which are respectively communicated with a first pump station and a second pump station; each group of water inlet holes in the operation well corresponds to one grading treatment unit; the grading treatment unit comprises venturi pipelines provided with contraction adsorption parts, a water hammer valve is arranged at the front end of each venturi pipeline close to the venturi pipelines, and a three-way valve is arranged at the rear end of each venturi pipeline; two outlets of the three-way valve of each grading treatment unit are respectively communicated with a first water collecting pipe and a second water collecting pipe; and a protective cavity communicated with the front weir crest is formed corresponding to each water inlet. The invention organically combines the water hammer valve and the Venturi structure, and simultaneously realizes automatic adsorption of small impurities or particulate matters and periodic automatic flushing and cleaning of the adsorbed impurities.
Description
Technical Field
The invention relates to the technical field of water supply and dirt blocking of hydraulic engineering, in particular to a dirt blocking structure for a water taking pump station and a cleaning method thereof.
Background
The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
With the progress of industrialization and urbanization, the quality and quantity of water resources are under tremendous pressure. Various impurities, suspended matters, harmful microorganisms and the like have negative effects on water quality, and also have challenges on normal operation of a pump station. The sewage blocking structure of the traditional water intake pump station mainly intercepts large particle impurities in water by a physical method (such as a filter screen and a basket screen). The above method works significantly when removing larger particles, but has limited removal for finer suspensions and particles.
Moreover, in order to meet the water quality requirements of different purposes, the design of the traditional staged water supply system is often complex, multi-stage filtration and treatment are needed, and multi-stage filters are arranged to meet the different water quality requirements. Not only does this take up more space, but each filtration level requires separate maintenance and monitoring, resulting in complex operations, increased costs and maintenance difficulties.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a more efficient sewage blocking structure for a water taking pump station.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a sewage blocking structure for a water intake pump station comprises a pump station cofferdam arranged at a runner of the pump station pond dam, wherein the pump station cofferdam comprises a front weir and a rear weir which are sequentially arranged between side weirs at two sides, an operation well is formed by surrounding the front weir and the rear weir, a middle weir is arranged in the middle of the water outlet side of the rear weir, and a first water intake channel and a second water intake channel which are respectively communicated with a first pump station and a second pump station are respectively formed by the middle weir and the side weirs and the rear weir at two sides;
the front weir is provided with at least one group of water inlet hole groups, each group of water inlet hole groups comprises a plurality of water inlets, and each group of water inlet hole groups corresponds to one grading treatment unit;
the grading treatment unit comprises grading treatment pipes which are correspondingly communicated with each water inlet in the water inlet group, each grading treatment pipe comprises a Venturi pipeline provided with a contraction adsorption part, a water hammer valve is arranged at the front end of each Venturi pipeline close to the Venturi pipeline, and a three-way valve is arranged at the rear end of each Venturi pipeline; two outlets of the three-way valve of each grading treatment unit are respectively communicated with a first water collecting pipe and a second water collecting pipe;
the rear weir is provided with a first water outlet and a second water outlet corresponding to each grading treatment unit respectively corresponding to the first water taking channel and the second water taking channel;
the outlet ends of the first water converging pipe and the second water converging pipe are respectively communicated with the corresponding first water outlet and second water outlet;
the front weir top is provided with a protection cavity corresponding to each water inlet, and the protection cavity is a Venturi channel provided with a condensation polymerization gas part;
the front side of the front weir is provided with a pretreatment unit, and the pretreatment unit comprises a filter screen and a cleaning device; the cleaning device comprises a liftable porous plate arranged on the front side of a filter screen, a plurality of water holes are formed in the porous plate, a plurality of conical protrusions are arranged on the front end face of the porous plate, a plurality of sundry hooks are arranged on the rear end face of the porous plate, water flows are filtered through the water holes and the filter screen successively, the conical protrusions enable water flows entering the water holes to generate turbulence, the turbulence is beneficial to filtering of the filter screen, and when the porous plate ascends, large impurities including leaves and pasture and water on the filter screen are cleaned, and the large impurities are cleaned manually after upwards moved to a specific height.
Preferably, the first water collecting pipe and the second water collecting pipe are arranged so that the pipe diameter gradually increases along with the connection ends of the first water outlet and the second water outlet.
Preferably, the first water converging pipe and the second water converging pipe of each grading treatment unit are vertically staggered, the first water converging pipe is directly communicated with the first outlet of the three-way valve, and the second water converging pipe is communicated with the second outlet of the three-way valve through corresponding branch pipes.
Preferably, the front weir is provided with more than two groups of water inlet holes which are distributed vertically and correspondingly, and each group of water inlet holes comprises a plurality of water inlets which are distributed transversely;
each protection cavity is communicated with the water inlets which correspond to the water inlets in the water inlet hole groups in the upper and lower modes.
Preferably, the top of protection chamber is provided with the protection pipe, the protection pipe is venturi structure pipe, protection pipe open end is provided with the protection network.
Preferably, the specific height is the upper part of a pump station pond dam or a pump station cofferdam, a portal frame is arranged above the pump station pond dam or the pump station cofferdam, a winch is arranged on the portal frame, the perforated plate is connected with the winch through a steel wire rope, and a guide rail matched with the perforated plate to lift is arranged on the side wall of the pump station pond dam or the pump station cofferdam.
Preferably, a guide plate is arranged on the side surface of the conical bulge;
the water hammer valve and the three-way valve are electromagnetic driving valves.
Preferably, the first water collecting pipe and the second water collecting pipe are provided with streamline elbows at the ends connected with the first water outlet and the second water outlet.
Working principle of the hierarchical processing unit:
the classifying treatment pipe is a venturi type pipe, a venturi effect is generated in a contracting adsorption part in the venturi type pipe, when fluid flows into a narrow part from a wide pipe, the speed of the fluid is increased, the pressure of the part is reduced, small impurities or particles can be acted on due to the pressure difference, the small impurities or particles are adsorbed to the low-pressure area, and water flow subjected to adsorption treatment enters a first pump station for supplying water with higher cleanliness.
The water hammer effect is a pressure shock that occurs when a fluid suddenly stops or changes direction in a pipe. In this solution, the impulse or short hammer is created by a rapidly switching hammer valve; when the water hammer valve is rapidly closed, it will prevent fluid flow for a short period of time, thereby creating a pressure wave. Such pressure waves propagate rapidly and cause impurities or particulates in the fluid to impinge upon, with the water flow entering the second pump station for relatively less clean water supply.
The invention organically combines the Venturi effect generated by the Venturi pipeline and the water hammer effect generated by the water hammer valve, thereby completing the sewage blocking and graded water supply treatment.
Working principle of the protection cavity:
the pulsed operation of the water hammer valve generates pressure waves, and damages the whole structure while flushing adsorbed particle impurities, so that the protective cavity is arranged to weaken or eliminate adverse effects caused by the pressure waves.
When the water hammer is generated, the pressure of the liquid can rise rapidly. This protective chamber provides additional space for the liquid to expand, thereby reducing sudden increases in pressure; meanwhile, as the protection cavity is a Venturi channel, a low-pressure area is generated at the shrinkage gas-gathering part, so that air is assisted to gather, and an air bag is formed to absorb pressure waves.
Operates in dependence on the low pressure region created by the venturi effect and the dynamic characteristics of the liquid. It not only provides additional space for the liquid to expand and move, but also may utilize a venturi structure to assist in gas collection and release, further reducing or eliminating the adverse effects of pressure waves.
The invention has the following beneficial effects:
through integrating the pretreatment unit and the grading treatment unit, large-scale and small-scale impurities are effectively intercepted and cleaned, and the water quality is improved.
The water hammer valve is organically combined with the Venturi structure, so that small-sized impurities or particles are automatically adsorbed, the adsorbed impurities are automatically washed and cleaned at regular intervals, and the graded water supply treatment is completed; the water supply cleanliness is improved, meanwhile, the requirements of manual cleaning and maintenance are reduced, and meanwhile, the requirements of diversified water supply are met.
The design of the staged processing unit simplifies the traditional multi-stage filtration system, saves space, simplifies operation, and reduces cost.
The self-protection of the system is realized by utilizing the natural characteristic of the Venturi effect through the protection cavity, and the pressure impact caused by the water hammer effect is reduced; the overall design improves the operation stability of the water intake pump station, and ensures the efficient utilization of water resources.
In order to better solve the problems in the prior art, the invention also provides a cleaning method of the dirt blocking structure for the water intake pump station according to any one of the schemes, which comprises the following steps:
s1, filtering large impurities including leaves and pasture by the pretreatment unit;
s2, adsorbing and classifying small particle impurities including sand and soil by the classification processing unit; the method specifically comprises the following steps:
s21, the water hammer valve is communicated, meanwhile, the three-way valves are switched to be communicated with the first water collecting pipe, water flows enter corresponding Venturi pipelines along the water inlet, small-sized particle impurities are adsorbed when passing through the contracted adsorption part, the cleaned water flows enter the first water collecting pipe, and sequentially enter the first pump station through the first water outlet and the first water taking channel;
s22, after a set time, the water hammer valve performs pulse operation to generate pressure waves, meanwhile, the three-way valves are switched to be communicated with the second water collecting pipe, the small-sized particle impurities are flushed out from the contraction adsorption part through the pressure waves generated by the water hammer valve, enter the second water collecting pipe along the water flow, and sequentially enter the second pump station through the second water outlet and the second water taking channel;
under the pressure wave action generated by the water hammer valve, water flow in the water inlet moves upwards through the protection cavity, a low-pressure area is generated when the water flow passes through the condensation polymerization gas part, and air is accumulated to absorb the pressure wave;
s23, repeating the steps S21 to S22.
The cleaning method of the invention has the following beneficial effects:
through the combination of the pretreatment unit and the grading treatment unit, not only is the effective filtration of large-particle impurities ensured, but also the efficient adsorption and removal of small-particle impurities are ensured.
Meanwhile, the cleaning process has an automatic basis, so that manual intervention can be greatly reduced, the operation efficiency is improved, and the service life of the system is prolonged.
Moreover, the combination of the water hammer effect and the Venturi effect makes the cleaning process more efficient, and also realizes efficient graded water supply treatment. This means that water can be selectively provided for different uses according to different water quality requirements, thereby realizing the optimal use of water resources, improving the use efficiency of water resources and meeting diversified water supply requirements.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of a cross-sectional structure in the direction A-A in FIG. 1;
FIG. 3 is a schematic view showing a sectional structure in the B-B direction in FIG. 1;
FIG. 4 is a schematic view of the cross-sectional structure in the direction C-C in FIG. 1;
FIG. 5 is a schematic view of a partial cross-sectional structure of a front weir;
FIG. 6 is a schematic view of the structure of the D-D direction section in FIG. 1;
FIG. 7 is a schematic overall elevational view of the present invention;
fig. 8 is a schematic view of the structure of the cone-shaped protrusion.
Reference numerals referred to in the drawings are:
1. pumping station pond dams; 11. A portal frame; 111. a hoist; 2. pump station cofferdam; 21. a side weir; 22. a front weir; 221. a water inlet; 23. a rear weir; 231. a first water outlet; 232. a second water outlet; 24. a middle weir; 25. operating the well; 26. a first water intake channel; 27. a second water intake passage; 3. a classification processing pipe; 31. a water hammer valve; 32. a three-way valve; 33. a shrink adsorption part; 4. a first water collecting pipe; 5. a second water collecting pipe; 6. a cleaning device; 61. a water through hole; 62. a sundry hook; 63. a conical protrusion; 631. a deflector; 7. a filter screen; 8. a protective cavity; 81. a protective tube; 82. a protective net; 83. and a condensation polymerization gas part.
Description of the embodiments
The invention will be further described with reference to specific examples and figures.
Fig. 1 to 8 show a sewage blocking structure for a water intake pump station, which comprises a pump station cofferdam 2 arranged at a runner of a pump station pond dam 1, wherein the pump station cofferdam 2 comprises a front weir 22 and a rear weir 23 which are sequentially arranged between side weirs 21 at two sides, an operation well 25 is formed by surrounding the front weir 22 and the rear weir 23, a middle weir 24 is arranged in the middle of the water outlet side of the rear weir 23, and the middle weir 24 respectively forms a first water intake channel 26 and a second water intake channel 27 which are respectively communicated with a first pump station and a second pump station with the side weirs 21 and the rear weir 23 at two sides;
the front weir 22 is provided with at least one group of water inlet holes, each group of water inlet holes comprises a plurality of water inlets 221, and each group of water inlet holes corresponds to one grading treatment unit;
the grading treatment unit comprises grading treatment pipes 3 which are correspondingly communicated with each water inlet 221 in the water inlet hole group, each grading treatment pipe 3 comprises a Venturi pipeline provided with a constriction adsorption part 33, a water hammer valve 31 is arranged at the front end of each Venturi pipeline close to the Venturi pipeline, and a three-way valve 32 is arranged at the rear end of each Venturi pipeline; two outlets of the three-way valve 32 of each grading treatment unit are respectively communicated with the first water converging pipe 4 and the second water converging pipe 5;
the rear weir 23 is provided with a first water outlet 231 and a second water outlet 232 corresponding to each grading treatment unit corresponding to the first water intake channel 26 and the second water intake channel 27 respectively;
the outlet ends of the first water collecting pipe 4 and the second water collecting pipe 5 are respectively communicated with the corresponding first water outlet 231 and second water outlet 232;
a protection cavity 8 communicated with the front weir 22 is formed at the top of the front weir 22 corresponding to each water inlet 221, and the protection cavity 8 is a venturi channel provided with a condensation polymerization gas part 83;
a pretreatment unit is provided on the front side of the front weir 22.
Wherein, as shown in fig. 1 to 3, the first water collecting pipe 4 and the second water collecting pipe 5 are arranged such that the pipe diameter gradually increases as they are respectively close to the end portions where the first water outlet 231 and the second water outlet 232 are connected, and the water flow gradually increases as they approach the outlet because the plurality of classification pipes 3 are arranged laterally side by side while the treated water corresponds to the confluence in one of the first water collecting pipe 4 and the second water collecting pipe 5. When the outlet water flows of the plurality of classification pipes 3 are converged into one water converging pipe, the sum of the flows is increased. In order to adapt to the gradually increased flow rate and ensure smooth flow of water in the pipe, vortex, water hammer or other unstable phenomena caused by sudden increase of the flow rate are avoided, and a design with gradually increased pipe diameter is needed. The following are further explanations and benefits of this design:
when a plurality of small flows are converged into one large flow, if the diameter of the water collecting pipe is not increased, the speed of the water flow is suddenly increased, and turbulence may be caused. Turbulence increases the resistance of the water flow and may lead to water hammer or other instability. The gradually increasing tube diameter helps to smoothly accommodate this flow increase, reducing the chance of turbulence.
The gradually increasing pipe diameter means that in the area of increased water flow, the flow rate is reasonably controlled, thereby reducing the resistance of flow. This will reduce the work load of the pump and the energy consumption of the overall system.
When the water flows of the plurality of classifying treatment pipes 3 suddenly sink into the water collecting pipe of a fixed pipe diameter, a water hammer phenomenon may occur. The gradually increasing pipe diameter helps to avoid abrupt flow rate changes, thereby reducing the risk of water hammer and reducing noise. When the outlet streams of the plurality of staged treatment pipes 3 are combined, it is critical to manage and control these streams. The progressively larger pipe diameters provide an effective convergence point for the water streams and allow for more effective management and control of flow.
The progressively larger pipe diameter design reduces maintenance requirements during long term use due to turbulence, deposition or other problems, thereby improving system stability and long term reliability.
Therefore, when the characteristic that the outlet water flows of the plurality of stage treatment pipes 3 are gradually converged and the flow rate is gradually increased is taken into consideration, the hydrodynamic stability can be ensured by adopting the design that the pipe diameter is gradually increased, the system efficiency is improved, and the maintenance requirement is reduced.
The first water converging pipe 4 and the second water converging pipe 5 of each grading treatment unit are distributed in a vertically staggered mode, the first water converging pipe 4 is directly communicated with the first outlet of the three-way valve 32, and the second water converging pipe 5 is communicated with the second outlet of the three-way valve 32 through corresponding branch pipes, so that the layout in the system is more optimized.
Wherein, the front weir 22 is provided with more than two groups of water inlet holes which are distributed vertically and correspondingly, and each group of water inlet holes comprises a plurality of water inlets 221 which are distributed transversely;
as shown in fig. 2, 3 and 5, each protection cavity 8 is communicated with the water inlets 221 corresponding to the upper and lower parts of each water inlet group, so that the same protection cavity 8 can simultaneously meet different water inlet groups.
The top of protection chamber 8 is provided with protection pipe 81, protection pipe 81 is venturi structure pipe, the protection pipe 81 open end is provided with protection network 82, when ventilative, avoids debris to fall into.
The pretreatment unit comprises a filter screen 7 and a cleaning device 6, the cleaning device 6 comprises a liftable porous plate arranged on the front side of the filter screen 7, a plurality of water through holes are formed in the porous plate, a plurality of conical protrusions 63 are arranged on the front end face of the porous plate, a plurality of sundry hooks 62 are arranged on the rear end face of the porous plate, water flows sequentially pass through the water through holes 61 and the filter screen 7 to be filtered, the conical protrusions 63 enable the water flow entering the water through holes 61 to generate turbulence, the turbulence is beneficial to the filtration of the filter screen 7, and when the porous plate ascends, large impurities including leaves and pasture are cleaned on the filter screen 7, and the large impurities are cleaned manually after the large impurities move upwards to a specific height;
the specific height is the top of pump station pond dam 1 or pump station cofferdam 2, pump station pond dam 1 or pump station cofferdam 2's top is provided with portal frame 11, install hoist engine 111 on the portal frame 11, the perforated plate pass through wire rope with hoist engine 111 connects, be provided with the guide rail that cooperates the perforated plate to go up and down on the lateral wall of pump station pond dam 1 or pump station cofferdam 2.
Wherein, the side of the conical bulge 63 is provided with a deflector 631, and the conical bulge 63 can be used for guiding the fluid to generate turbulent flow. Turbulence increases the relative velocity of the water to the surface of the screen 7 and, at the same time, the turbulence is generated and the deflector 631 guides the fluid in cooperation, which causes the impurities in the fluid to be more dispersed, thereby increasing the filtering efficiency. By adding baffles 631 to the sides of the conical projections 63, the water flow can be further directed, reducing their probability of accumulation on the surface of the screen 7, ensuring that the water flow passes evenly through the screen 7, avoiding localized excessive flow or clogging.
Wherein, the water hammer valve 31 and the three-way valve 32 are both electromagnetically driven valves, which is convenient for automatic control.
Wherein, the first water collecting pipe 4 and the second water collecting pipe 5 are provided with streamline elbows at the ends connected with the first water outlet 231 and the second water outlet 232, so that water flows through the streamline elbows conveniently.
The following is a further explanation of the working principle in this scheme:
working principle of the hierarchical processing unit:
the classifying tube 3 is a venturi-type tube in which a constriction/adsorption portion 33 generates a venturi effect, and when a fluid flows from a wide tube into a narrow portion, its velocity increases, resulting in a pressure decrease in the portion, small impurities or particles are acted upon by this pressure difference and adsorbed to this low pressure region, and the adsorbed water flow enters a first pump station for supplying water with a high cleanliness.
The water hammer effect is a pressure shock that occurs when a fluid suddenly stops or changes direction in a pipe. In this solution, the impulse or short hammer is generated by a rapidly switching hammer valve 31; when the water hammer valve 31 is rapidly closed, it will prevent fluid flow for a short period of time, thereby generating a pressure wave. Such pressure waves propagate rapidly and cause impurities or particulates in the fluid to impinge upon, with the water flow entering the second pump station for relatively less clean water supply.
The invention organically combines the venturi effect generated by the venturi pipe and the water hammer effect generated by the water hammer valve 31, thereby completing the sewage blocking and graded water supply treatment.
Principle of operation of the protection cavity 8:
the pulsed operation of the water hammer valve 31 generates pressure waves which can damage the entire structure while flushing the adsorbed particulate impurities, and thus, the protective chamber 8 is provided to attenuate or eliminate the adverse effects caused by the pressure waves.
When the water hammer is generated, the pressure of the liquid can rise rapidly. This protective chamber 8 provides an extra space for the liquid to expand, thereby reducing sudden increases in pressure; meanwhile, since the protection cavity 8 is a venturi passage, a low pressure area is generated at the constriction and air collection portion 83, which helps air collection, and an "air bag" is formed to absorb the pressure wave.
Operates in dependence on the low pressure region created by the venturi effect and the dynamic characteristics of the liquid. It not only provides additional space for the liquid to expand and move, but also may utilize a venturi structure to assist in gas collection and release, further reducing or eliminating the adverse effects of pressure waves.
The invention has the following beneficial effects:
through integrating the pretreatment unit and the grading treatment unit, large-scale and small-scale impurities are effectively intercepted and cleaned, and the water quality is improved.
The water hammer valve 31 and the Venturi structure are organically combined, simultaneously, the small-sized impurities or particles are automatically adsorbed, the adsorbed impurities are automatically washed and cleaned at regular intervals, the water supply cleanliness is improved, the requirements for manual cleaning and maintenance are reduced, and the graded water supply treatment is completed; for example, for those applications requiring high cleanliness (such as potable water or certain industrial uses), water treated by the first pump station may be used; for those applications where the water quality requirements are relatively low (e.g., cooling water, field irrigation, etc.), water treated by the second pump station may be used. The graded water supply mode not only reduces the running cost of the whole system (because not all water needs to be highly treated), but also ensures that various applications can obtain the water quality level required by the water quality, thereby greatly improving the use efficiency of water resources and meeting diversified water supply requirements.
The design of the staged processing unit simplifies the traditional multi-stage filtration system, saves space, simplifies operation, and reduces cost.
The self-protection of the system is realized by utilizing the natural characteristic of the Venturi effect through the protection cavity 8, and the pressure impact caused by the water hammer effect is reduced; the overall design improves the operation stability of the water intake pump station, and ensures the efficient utilization of water resources.
In order to better solve the problems in the prior art, the invention also provides a cleaning method of the dirt blocking structure for the water intake pump station according to any one of the schemes, which comprises the following steps:
s1, filtering large impurities including leaves and pasture by the pretreatment unit;
s2, adsorbing and classifying small particle impurities including sand and soil by the classification processing unit; the method specifically comprises the following steps:
s21, the water hammer valve 31 is conducted, meanwhile, the three-way valves 32 are switched to be communicated with the first water collecting pipe 4, water flows enter corresponding Venturi pipelines along the water inlet 221, small-sized particle impurities are adsorbed when passing through the contracted adsorption part 33, the cleaned water flows enter the first water collecting pipe 4, and sequentially enter a first pump station through the first water outlet 231 and the first water taking channel 26;
s22, after a set time, the water hammer valve 31 performs pulse operation to generate pressure waves, meanwhile, the three-way valves 32 are switched to be communicated with the second water collecting pipe 5, the small particle impurities are flushed out from the contracted adsorption part 33 through the pressure waves generated by the water hammer valve 31, enter the second water collecting pipe 5 along with water flow, and sequentially enter a second pump station through the second water outlet 232 and the second water taking channel 27;
under the pressure wave generated by the water hammer valve 31, the water flow in the water inlet 221 moves upwards through the protection cavity 8, a low pressure area is generated when the water flows through the condensation polymerization gas part 83, and air is accumulated to absorb the pressure wave;
s23, repeating the steps S21 to S22.
The pretreatment unit is used for filtering large-scale impurities, so that a purer water source environment is created for the subsequent grading treatment units.
When the large-scale impurity is filtered by the pretreatment unit, the classification unit can treat the small-scale particle impurity more effectively, and the risks of blockage and excessive abrasion are reduced. The front and back matching improves the overall filtering efficiency.
Due to the venturi design, the fluid will produce a venturi effect with increased velocity and reduced pressure in the converging and diverging portion 33, which is advantageous for the adsorption of small particulate impurities. The pressure wave scour generated by the water hammer effect can help to remove the adsorbed impurities, and ensure a long-time and efficient working state. The synergistic effect of the two can not only effectively adsorb impurities, but also remove the impurities in time.
Through the two-stage treatment, the water resource is divided into two different water collecting pipes, so that the supplied water meets different water quality standards. The cooperation of the staged water supply and the treatment units allows various water demands to be met, rather than simply treating all water resources to the same standard.
The combination of venturi effect and water hammer effect may create a significant pressure impact during the removal of adsorbed impurities, while the protective chamber 8 provides a buffer area so that the process does not damage the entire system.
The automatic design of the whole system ensures that all treatment and cleaning processes are carried out at proper time, and the continuity and the high efficiency of the whole system are ensured.
In summary, the cleaning method of the present invention has the following advantages:
through the combination of the pretreatment unit and the grading treatment unit, not only is the effective filtration of large-particle impurities ensured, but also the efficient adsorption and removal of small-particle impurities are ensured.
Meanwhile, the cleaning process has an automatic basis, so that manual intervention can be greatly reduced, the operation efficiency is improved, and the service life of the system is prolonged.
Moreover, the combination of the water hammer effect and the Venturi effect makes the cleaning process more efficient, and also realizes efficient graded water supply treatment. This means that water can be selectively provided for different uses according to different water quality requirements, thereby realizing the optimal use of water resources, improving the use efficiency of water resources and meeting diversified water supply requirements.
The system being cleaned and maintained constantly by the water hammer valve 31 means that the risk of clogging is reduced. This ensures the continuity and stability of the water supply, thereby improving the water supply efficiency.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.
The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present invention and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a block dirty structure that water intaking pump station was used, is provided with pump station cofferdam, its characterized in that including the runner department of pump station pond dam:
the pump station cofferdam comprises front weirs and rear weirs which are sequentially arranged between the side weirs at the two sides, an operation well is formed by surrounding the front weirs and the rear weirs, a middle weir is arranged in the middle of the water outlet side of the rear weir, and a first water taking channel and a second water taking channel which are respectively communicated with a first pump station and a second pump station are respectively formed by the middle weir, the side weirs and the rear weirs at the two sides;
the front weir is provided with at least one group of water inlet hole groups, each group of water inlet hole groups comprises a plurality of water inlets, and each group of water inlet hole groups corresponds to one grading treatment unit;
the grading treatment unit comprises grading treatment pipes which are correspondingly communicated with each water inlet in the water inlet group, each grading treatment pipe comprises a Venturi pipeline provided with a contraction adsorption part, a water hammer valve is arranged at the front end of each Venturi pipeline close to the Venturi pipeline, and a three-way valve is arranged at the rear end of each Venturi pipeline; two outlets of the three-way valve of each grading treatment unit are respectively communicated with a first water collecting pipe and a second water collecting pipe;
the rear weir is provided with a first water outlet and a second water outlet corresponding to each grading treatment unit respectively corresponding to the first water taking channel and the second water taking channel;
the outlet ends of the first water converging pipe and the second water converging pipe are respectively communicated with the corresponding first water outlet and second water outlet;
the front weir top is provided with a protection cavity corresponding to each water inlet, and the protection cavity is a Venturi channel provided with a condensation polymerization gas part and used for absorbing impact generated by a water hammer valve;
the front side of the front weir is provided with a pretreatment unit, and the pretreatment unit comprises a filter screen and a cleaning device; the cleaning device comprises a liftable porous plate arranged on the front side of a filter screen, a plurality of water holes are formed in the porous plate, a plurality of conical protrusions are arranged on the front end face of the porous plate, a plurality of sundry hooks are arranged on the rear end face of the porous plate, water flows are filtered through the water holes and the filter screen successively, the conical protrusions enable water flows entering the water holes to generate turbulence, the turbulence is beneficial to filtering of the filter screen, and when the porous plate ascends, large impurities including leaves and pasture and water on the filter screen are cleaned, and the large impurities are cleaned manually after upwards moved to a specific height.
2. The trash blocking structure for water intake pump station according to claim 1, wherein:
the first water collecting pipe and the second water collecting pipe are arranged at the end parts which are respectively close to the first water outlet and the second water outlet, and the pipe diameter is gradually increased.
3. The trash blocking structure for water intake pump station according to claim 1, wherein:
the first water converging pipes and the second water converging pipes of each grading treatment unit are vertically staggered and distributed, the first water converging pipes are directly communicated with the first outlets of the three-way valves, and the second water converging pipes are communicated with the second outlets of the three-way valves through corresponding branch pipes.
4. The trash blocking structure for water intake pump station according to claim 1, wherein:
the front weir is provided with more than two groups of water inlet holes which are distributed up and down correspondingly, and each group of water inlet holes comprises a plurality of water inlets which are distributed transversely;
each protection cavity is communicated with the water inlets which correspond to the water inlets in the water inlet hole groups in the upper and lower modes.
5. The trash blocking structure for water intake pump station according to claim 1, wherein:
the top of protection chamber is provided with the protection pipe, the protection pipe is venturi structure pipe, the protection pipe open end is provided with the protection network.
6. The trash blocking structure for water intake pump station according to claim 1, wherein:
the top of pump station pond dam or pump station cofferdam is provided with the portal frame, install the hoist engine on the portal frame, the perforated plate pass through wire rope with the hoist engine is connected, be provided with the guide rail that cooperates the perforated plate to go up and down on the lateral wall of pump station pond dam or pump station cofferdam.
7. The trash blocking structure for water intake pump station of claim 6, wherein:
the side surface of the conical bulge is provided with a guide plate;
the water hammer valve and the three-way valve are electromagnetic valves.
8. The trash blocking structure for water intake pump station according to claim 1, wherein:
the first water converging pipe and the second water converging pipe are provided with streamline elbows at the end parts connected with the first water outlet and the second water outlet.
9. A method of cleaning a dirt blocking structure for a water intake pump station according to any one of claims 1 to 8, wherein: the method comprises the following steps:
s1, filtering large impurities including leaves and pasture by the pretreatment unit;
s2, adsorbing and classifying small particle impurities including sand and soil by the classification processing unit; the method specifically comprises the following steps:
s21, the water hammer valve is communicated, meanwhile, the three-way valves are switched to be communicated with the first water collecting pipe, water flows enter corresponding Venturi pipelines along the water inlet, small-sized particle impurities are adsorbed when passing through the contracted adsorption part, the cleaned water flows enter the first water collecting pipe, and sequentially enter the first pump station through the first water outlet and the first water taking channel;
s22, after a set time, the water hammer valve performs pulse operation to generate pressure waves, meanwhile, the three-way valves are switched to be communicated with the second water collecting pipe, the small-sized particle impurities are flushed out from the contraction adsorption part through the pressure waves generated by the water hammer valve, enter the second water collecting pipe along the water flow, and sequentially enter the second pump station through the second water outlet and the second water taking channel;
under the pressure wave action generated by the water hammer valve, water flow in the water inlet moves upwards through the protection cavity, and air gathers to absorb the pressure wave when passing through the condensation polymerization gas part;
s23, repeating the steps S21 to S22.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311301287.7A CN117026902B (en) | 2023-10-10 | 2023-10-10 | Sewage blocking structure for water intake pump station and cleaning method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311301287.7A CN117026902B (en) | 2023-10-10 | 2023-10-10 | Sewage blocking structure for water intake pump station and cleaning method thereof |
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| CN117026902B true CN117026902B (en) | 2024-01-09 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203329472U (en) * | 2013-06-14 | 2013-12-11 | 云南沃润特环境工程有限公司 | Venturi pipeline filter |
| WO2018148305A1 (en) * | 2017-02-07 | 2018-08-16 | New Environmental Engineering, Inc. | Improved venturi apparatus and method of use |
| CN111632409A (en) * | 2020-05-12 | 2020-09-08 | 尚铁军 | Venturi inner member for sedimentation tank |
| CN115341516A (en) * | 2022-07-19 | 2022-11-15 | 中交一公局集团有限公司 | Convenient-to-clean trash holding structure for water taking pump station and cleaning method thereof |
-
2023
- 2023-10-10 CN CN202311301287.7A patent/CN117026902B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203329472U (en) * | 2013-06-14 | 2013-12-11 | 云南沃润特环境工程有限公司 | Venturi pipeline filter |
| WO2018148305A1 (en) * | 2017-02-07 | 2018-08-16 | New Environmental Engineering, Inc. | Improved venturi apparatus and method of use |
| CN111632409A (en) * | 2020-05-12 | 2020-09-08 | 尚铁军 | Venturi inner member for sedimentation tank |
| CN115341516A (en) * | 2022-07-19 | 2022-11-15 | 中交一公局集团有限公司 | Convenient-to-clean trash holding structure for water taking pump station and cleaning method thereof |
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| CN117026902A (en) | 2023-11-10 |
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