CN114934495B - River channel algae control system based on ship lock water conservancy junction and rectification analysis method - Google Patents
River channel algae control system based on ship lock water conservancy junction and rectification analysis method Download PDFInfo
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- CN114934495B CN114934495B CN202210288920.2A CN202210288920A CN114934495B CN 114934495 B CN114934495 B CN 114934495B CN 202210288920 A CN202210288920 A CN 202210288920A CN 114934495 B CN114934495 B CN 114934495B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 160
- 241000195493 Cryptophyta Species 0.000 title claims abstract description 132
- 238000004458 analytical method Methods 0.000 title claims abstract description 16
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 10
- 238000013178 mathematical model Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 16
- 238000005192 partition Methods 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002353 algacidal effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02C—SHIP-LIFTING DEVICES OR MECHANISMS
- E02C1/00—Locks or dry-docks; Shaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/10—Devices for removing the material from the surface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/28—Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/10—Numerical modelling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
Abstract
The invention discloses a river channel algae control system based on a ship lock water conservancy junction and a rectification analysis method, and belongs to the technical fields of algae control technology and three-dimensional simulation analysis. Including the empty box bank, kill the algae well, wherein the lock includes the lock wall, goes down the lock head, and the empty box bank sets up according to the mounted position of lock, and the inside of empty box bank is hollow out structure, and at least a set of algae well of killing is arranged in the empty box bank, and every algae well of killing of group all corresponds and is provided with out the water cross tube, and the one end of going out the water cross tube is pre-buried in the empty box bank according to predetermined angle along the rivers direction and extends to the side along the line behind the lock wall. According to the river channel algae control system based on the ship lock water conservancy junction, the change of the existing basic environment is small, the empty box bank wall is arranged on the ship lock, algae killing operation is performed by using the algae killing well, the algae killing well is pressurized and then enters the river channel through the water outlet pipe, meanwhile, rectification measures are additionally arranged, so that the flow state of water is stable, the existing flood control and drainage patterns are not influenced, the algae sedimentation area is relatively long, and the existing building is not influenced.
Description
Technical Field
The invention belongs to the technical field of algae control and three-dimensional simulation analysis, and particularly relates to a river channel algae control system based on a ship lock water conservancy junction and a rectification analysis method.
Background
The blue algae backflow and the blue algae large-area accumulation phenomena occur in the Taihu river channel, the river channel water quality and the regional water environment image are seriously influenced, in order to prevent the blue algae from influencing the river channel water quality and the water ecological environment, the regional water environment image is promoted and improved, the blue algae is prevented and controlled by the surrounding partition, the surrounding partition is fixed in the water body through the anchoring piles and the cable system, the surrounding partition is fixedly connected into a whole after construction is completed, the middle part of the surrounding partition cannot be disconnected, the lake river channel is required to be provided with navigation requirements except for preventing and controlling the blue algae, the surrounding partition is required to be dismantled for navigation, and the different requirements of the blue algae and navigation cannot be well solved under the condition of not being dismantled by the current surrounding partition.
Disclosure of Invention
The invention provides a river channel algae control system based on a ship lock water conservancy junction and a rectification analysis method for solving the technical problems in the background art.
The invention adopts the following technical scheme: a river channel algae control system based on a ship lock water conservancy junction, the ship lock comprising a lock wall, an upper lock head, a lower lock head and a lock chamber, comprising:
an empty box bank wall is arranged based on the layout of the ship locks; the interior of the empty box bank wall is of a hollowed-out structure;
at least one group of algae killing wells are arranged in the empty box bank wall according to a preset sequence; each group of algae killing wells is correspondingly provided with a water outlet transverse pipe, and the water outlet transverse pipe is pre-buried in the empty box bank wall according to a preset angle and extends to the outside of the gate wall.
In a further embodiment, the rectifying structure is arranged at the water outlet near the water outlet cross pipe for stable drainage of the lock chamber.
Through above-mentioned technical scheme, the installation of empty case bank wall changes former drainage environment, adds the rectification structure and carries out rivers and discharge steadily.
In a further embodiment, the side of the empty box quay wall is recessed backwards by a predetermined distance to the outer side of the ship lock along the line to form a backward region, and the water inlet of the algae killing well is arranged in the backward region.
In a further embodiment, an anti-collision pier is arranged at the water inlet of the algae killing well.
Through above-mentioned technical scheme, set up the retreating district for the water that contains the algae gets into the algae killing well, sets up crashproof mound simultaneously, prevents the ship in the lock and hits the algae killing well, protects the water inlet of algae killing well.
In a further embodiment, the empty box wall is disposed on the lock wall, and algae water in the lock chamber is algae-killed via an algae-killing well and discharged to an outside water area of the empty box wall.
Through the technical scheme, algae is removed after the algae killing well kills algae.
In a further embodiment, the empty box quay wall is arranged at the extension of the sluice wall, a dam is further arranged at a preset distance from the outlet of the lower sluice head, and the dam, the empty box quay wall and the lower sluice head are combined into an overflow weir.
The algae killing well comprises:
the algae removal device is arranged in the empty box bank wall;
the first gate valve is arranged at the position of the water outlet transverse pipe, which is close to the algae removal device; a second gate valve is also arranged on the other side of the horizontal water pipe;
the negative pressure generator is arranged in the water outlet transverse pipe; the negative pressure generator is arranged between the first gate valve and the second gate valve.
Through the technical scheme, after the algae is taken out by the algae removal device, the algae removal device is subjected to pressure in the deep part of the algae removal device, the blue algae group is broken into small groups or single cell particles, the air bags (pseudo-cavitation bubbles) in the blue algae cells are collapsed to enable the blue algae to lose the floating capacity and lose the bioactivity, the water body introduced in the high algae stage is prevented from gathering with naked eyes, the blue algae after the pressurization treatment is discharged through the water outlet transverse pipe, the negative pressure generator is arranged at the outer side of the water outlet transverse pipe and is installed in water, and the water body after the pressure treatment in the algae removal device is discharged out of an algae removal well mainly by generating extremely small negative pressure at the water outlet end of the algae removal device.
In a further embodiment, the method comprises:
establishing at least one flow field three-dimensional model, wherein the flow field three-dimensional model is established based on-site environment simulation and a preset installation environment, and the on-site environment at least comprises a ship lock and river characteristics; the preset installation environment at least comprises an algae killing well and an empty box bank wall;
and establishing a water flow mathematical model based on the three-dimensional flow field model, and analyzing the flow state of water flow in the corresponding three-dimensional flow field model.
By the technical scheme, a flow field three-dimensional model is established for simulating the field environment, so that further accurate analysis and calculation are performed, and rectifying measures and the effect of predictive rectification are completed.
In a further embodiment, the flow state of the water flow is introduced into a three-dimensional streamline and flow velocity distribution cloud chart for description;
the introduction of the flow mathematical model comprises at least a flow control equation and a turbulence model for analysing the physical quantity of the flow regime of the water flow.
In a further embodiment, the flow field three-dimensional model performs numerical simulation using unstructured grids; wherein, the structure complex area of the flow field three-dimensional model is subjected to local encryption treatment
Through the technical scheme, meshing is introduced to carry out precise analysis and calculation.
The invention has the beneficial effects that: the change to current basic environment is less, installs the blank case bank wall on the lock, uses the algae killing well to carry out algae killing operation, gets into the river course through the outlet pipe after the algae killing well pressurization, and outlet pipe negative pressure generator arranges in the blank case partition wall, and dry room structure is convenient to overhaul and maintain, adds the rectification measure for rivers flow state is stable, does not have the influence to current flood control drainage pattern, and algae settlement area and time are longer relatively, do not have the influence to current building.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic diagram of the algae-killing well structure of the present invention.
Fig. 3 is a schematic representation of the three-dimensional flow field of the present invention.
FIG. 4 is a schematic view of a guide wall according to the present invention.
Fig. 5 is a schematic view of the sill structure of the present invention.
Each labeled in fig. 1 to 5 is: the ship lock 1, the empty box bank wall 2, the algae killing well 3, the guide wall 4, the sill 5, the algae killing device 31, the negative pressure generator 32 and the water outlet horizontal pipe 33.
Detailed Description
Based on the problems in the background technology, the invention designs a corresponding algae control system for the ship lock based on the installation environment of the ship lock in the existing water conservancy junction, which is used for recovering the normal flow state of a river channel and guaranteeing the water environment quality of the river, and meanwhile, the algae control system for the ship lock can change the installation environment of the original ship lock, especially the drainage operation after algae control engineering, in order to prevent the water flow state of a water outlet from being disordered, influence the safety of surrounding buildings, protect the bank protection and the bottom protection of the water outlet and set rectifying measures at the bottom of the river.
The present embodiment is a ship lock algae control system, based on the ship lock 1, the ship lock 1 generally comprises a lock wall, an upper lock head, a lower lock head and other structures, the ship lock 1 generally has various construction modes, and commonly has double banks, namely, two banks are constructed on one side of a dam for constructing the lock wall, one bank is constructed for the next-shore construction, a first lock wall is constructed on the banks, a second lock wall is constructed next to the bank corresponding to the position of the bank, the lock wall, the upper lock head, the lower lock head and the lock wall are combined into the ship lock 1, the second type utilizes the advantages of the bank, the cost is low, wherein the ship lock algae control system of the present invention comprises an empty box bank 2 and algae killing wells 3, the empty box bank 2 is arranged based on the installation position of the ship lock 1, the inside of the empty box bank 2 is a hollow structure, at least one group of algae killing wells 3 are arranged in the empty box bank 2, each group of algae killing wells 3 is correspondingly provided with a water outlet cross pipe 33, and the water outlet cross pipe 33 extends to the two sides of the water flow cross walls along the predetermined direction along the water outlet cross walls 33.
Further, algae killing well 3 includes algae removal ware 31, goes out water violently pipe 33, negative pressure generator 32, and wherein algae removal ware 31 sets up in empty box bank wall 2, goes out water violently pipe 33 and connects algae removal ware 31, goes out and sets up first gate valve between water violently pipe 33 and the algae removal ware 31, and the opposite side of water violently pipe still sets up the second gate valve, and negative pressure generator 32 sets up in going out water violently pipe 33, and negative pressure generator 32 sets up between first gate valve and second gate valve.
The negative pressure generator 32 is a drainage device installed on the water outlet horizontal pipe 33, and the negative pressure formed by the drainage device discharges algae-containing water through the high-efficiency adjustable algae killing well 3 to remove algae finally, and has the characteristics of high flow and low power. When the algae killing device is used, the negative pressure generator 32 provides hydrodynamic force, after the algae is taken by the algae killing device 31, the algae is subjected to pressure in the deep part of the algae killing device 31, the blue algae group is broken into small groups or single cell particles, the air bags (pseudo cavitation bubbles) in the blue algae cells are collapsed to enable the blue algae to lose the floating capacity and lose the bioactivity, the water introduced in the high algae stage is ensured not to be gathered with naked eyes, the blue algae after the pressurization treatment is discharged through the water outlet transverse pipe 33, the negative pressure generator 32 is arranged at the outer side of the water outlet transverse pipe 33, the negative pressure generator 32 is arranged in water, and mainly, the water after the pressure treatment in the algae killing device 31 is discharged out of the algae killing well 3 by generating extremely small negative pressure at the water outlet end of the algae killing device 31.
The negative pressure generator 32 in this embodiment is an electromechanical integrated structure composed of a submersible motor, a planetary reducer, an impeller, and the like, and is a horizontal single-stage structure.
Example 1
Taking a ship lock 1 built near the shore as an example, arranging a algae control system for the ship lock on a separation wall, removing algae from the separation wall, draining water, opening or closing the ship lock 1 according to the requirement after the algae killing well 3 stops running, and draining waterlogging, when the ship lock is used, opening a water inlet of the ship lock 1, closing a water outlet of the ship lock 1, and laterally introducing algae-containing water to enter another river channel laterally after being pressurized by the algae killing well 3.
The empty box bank wall 2 is arranged on the separation dike, the concrete implementation engineering is that the sluice wall on the original separation dike is dismantled and used for newly building the empty box bank wall 2, 4 groups of bath killing wells are selected and used, the numbers are 1 to 4 respectively, the water killing wells are sequentially arranged in the empty box bank wall 2, anti-collision piers are arranged on two sides of the algae killing well 3, algae-containing water is led to a river channel B from the river channel A, after algae removal of the algae killing well 3, purified water enters the river channel B through a water outlet transverse pipe 33, and a water outlet pipe negative pressure generator 32 is arranged in the empty box separation wall, in the embodiment, the water level of the river channel A is higher than that of the river channel B.
In this embodiment, it is preferable that the outer diameter of the algae killing well 3 is phi 3m, the inner diameter is phi 2m, a row arrangement is adopted, when algae control is operated, the upper lock head of the ship lock 1 is opened to conduct water diversion, the lower lock head of the ship lock 1 is closed, a water inlet pool is formed by utilizing the lock chamber of the ship lock 1, water in the river channel A laterally enters the river channel B after being pressurized by the algae killing well 3, when water drainage is operated, the algae killing well 3 stops operating, the ship lock 1 is opened or closed according to requirements, the river channel B drains water outwards, the upper lock head of the No. 1 algae killing well 3 is about 52m, the lower lock head of the No. 4 algae killing well 3 is about 15m away from the upper lock head of the No. 4 algae killing well 3, in order to prevent water rush, the space between the algae killing wells 3 is set to be 15m, meanwhile, collision is prevented from being generated to the algae killing well 3 when the ship is not influenced by the navigation clear width of the ship, the side of the ship lock 1 is moved back to the bank wall 2 along the line for 4m construction, and an anti-collision pier is arranged. Because the algicidal well No. 1 to No. 3 is laterally discharged water, the flow state is relatively disordered, the safety of the existing building is not endangered in order to reduce the running flow velocity of the discharged water, a rectifying ridge with the height of 1m is arranged at the tail end of the empty box bank wall 2, and slope protection and bottom protection in the engineering range are built by adopting C25 concrete.
Example two
Taking the ship lock 1 of the adjacent bank construction as an example, the water level of the river channel A is higher than that of the river channel B, the lock wall of the ship lock 1 adjacent to the bank is partially dismantled and an empty box bank wall 2 is newly built, namely, the lock wall built on the side of the bank is rebuilt, the algae killing well 3 is arranged in a row along the water flow direction of the empty box bank wall 2, and the water outlet pipe is communicated with the river channel B in a buried mode, so that the navigation of the ship lock 1 is not influenced in the future, the algae killing well 3 is built along the front of the lock wall along the line and the back of the ship lock 4m, anti-collision piers are respectively arranged on two sides of the algae killing well 3, and meanwhile, in order to prevent the water flow state of a water outlet from being disturbed, the safety of surrounding buildings is influenced, and the bank protection and the bottom protection of the water outlet are protected.
Example III
Taking a ship lock 1 built near a bank as an example, the water level of a river channel A is higher than that of a river channel B, an empty box diaphragm wall and a dam lock are newly built behind the lower lock head of the ship lock 1, the empty box diaphragm wall, the dam lock and the embankment are combined to form an overflow weir, an algae killing well 3 is arranged at the outlet of the lower lock head of the ship lock 1, the algae killing well 3 is arranged in the river channel of the river channel B, an empty box diaphragm wall with the length of about 100m is newly built at the downstream of the lower lock head to form a reservoir, the width of the diaphragm wall is 10m, the height is 4m, a negative pressure generator 32 and a water pump are arranged in the empty box diaphragm wall, meanwhile, in order to ensure navigation of the ship lock 1 in the future, a 12m wide steel dam lock is newly built at the outlet, 3 ports are arranged at the west side of the algae killing well 3, 1 port is arranged at the east side, when the algae control system operates, the ship lock 1 is closed, the steel dam lock is pressurized through the algae killing well 3 and then enters the river channel B, when the water logging operation is stopped, the algae killing well 3 stops running, the river channel B is opened, and the river channel is drained. Meanwhile, in order to prevent the water flow state of the water outlet from being disturbed and affecting the safety of surrounding buildings, the bank protection and the bottom protection of the water outlet are protected, and rectification measures are arranged at the bottom of the river.
Through the technical scheme, as the algae control system for the ship lock changes the direction of the water, when the original scheme does not increase the rectification scheme, the impurities in the water are more, so that cavitation of the blades of the negative pressure generator 32 is extremely easy to generate, and the efficient and stable operation of the unit is influenced. Because the lateral water outlet of a larger angle is extremely disturbed, the water outlet side flow is extremely disturbed, especially the water flow structure reaches a river channel diffusion section, the water flow structure has an obvious secondary flow structure, the difference of flow velocities at two sides of a river bed is large, the momentum is uneven, and a vortex with a larger range is generated, taking the embodiment as an example, the long-term operation of the vortex can lead to the river bed to be seriously scoured, the safety of ships under the following passing condition of the ship lock 1 forms a certain threat, in further embodiments, the water outlet of the ship lock 1 for constructing a river channel algae control system is provided with a rectification structure to prevent the water flow state of the water outlet from being disturbed, the river channel rectification analysis method is provided, and comprises the following steps of: the three-dimensional model of at least one flow field is established based on the field environment simulation and the preset installation environment, and the field environment at least comprises a ship lock 1 and river characteristics; the preset installation environment at least comprises an algae killing well 3 and a water conveying pipeline; based on the three-dimensional flow field model, establishing a water flow mathematical model, and analyzing the flow state of water flow in the corresponding three-dimensional flow field model; the flow state of the water flow is described by using a three-dimensional streamline and a flow velocity distribution cloud picture; the water flow mathematical model at least comprises a flow control equation and a turbulence model, is used for simulating the physical quantity of the flow state of the water flow, comprehensively considers the precision and the solving efficiency, preferentially adopts the Navier-Stokes equation with the Reynolds time average to describe the flow field motion, and selects the widely used standard k-epsilon turbulence model
Based on the physical quantity of the flow state of the water flow, a hydraulic characteristic analysis function is designed, and the characteristic of the flow state of the water flow is specifically analyzed. The hydraulic characteristic analysis function at least comprises flow velocity distribution uniformity and a velocity weighted average angle. The characteristics of the flow regime of the water flow include at least the uniformity of the flow velocity distribution and the directionality of the water flow into the pump. Performing numerical simulation on the flow field three-dimensional model by adopting unstructured grids; the method comprises the steps of carrying out local encryption processing on a structure complex area of a flow field three-dimensional model, and carrying out grid independent system analysis; grid division of the three-dimensional model of the convective field is one of the key factors that affect numerical simulation accuracy and computation time. The total number of grids is less, which is beneficial to shortening the calculation time and possibly causing the accuracy reduction of the prediction result; the total number of grids is too large, the accuracy of the numerical simulation result is improved, but the calculation time is increased, and the calculation cost is increased. For example, an unstructured grid is adopted to divide the entity into blocks, a region with a complex structure is subjected to local encryption, the grid is subjected to irrelevant analysis, the total number of the grids is about 1100 ten thousand, the grid quality reaches more than 0.3, and the numerical calculation requirement is met.
Example IV
Taking the above implementation as an example, the "Chuan" shaped guide wall 4 is set in the river channel B, the "Chuan" shaped guide wall 4 is set along the drainage direction, because the engineering flow velocity distribution is a relatively critical control factor, in order to intuitively reflect the flow velocity distribution situation inside the water flow, the middle layer flow plane on the water side is selected as a research object, and the flow velocity distribution cloud image analysis obtained from the flow field three-dimensional model shows that the flow velocity of the water outlet side is concentrated in a measurable speed interval, so as to meet the flow velocity control requirement, but the flow velocity distribution is disordered, the local flow velocity is larger, when the local flow velocity maximum flow velocity reaches the preset value, a relatively obvious vortex is generated, and the negative pressure is extremely easy to generate, thereby flushing the bank wall of the ship lock 1.
And selecting the inlet section of the water outlet pipe as a characteristic section, analyzing the hydraulic characteristics of each unit, and analyzing the average value of the normal flow velocity uniformity of the water inlet section.
Example five
Taking the third embodiment as an example, the sill 5 is arranged in the river channel B, the sill 5 is arranged along the drainage direction, the water outlet side flow is concentrated in a measurable speed interval, but after passing through the sill 5, the water flow velocity is effectively controlled, the maximum flow velocity of the whole flow channel can be measured below a preset value, the flow velocity is effectively controlled after the water is diffused through the water conveying pipeline, a plurality of sections along the water flow direction are selected as research objects for further analyzing the flow velocity distribution condition of each water section perpendicular to the water flow direction, the flow velocity vector change in the water flow advancing process can be further obtained, the water flow side flow velocity is large before the sill 5, the flow velocity vector direction is disordered, and a large range of backflow exists. After passing through the sill 5, the velocity vector of each section in the travelling direction is optimized, the water flow direction is adjusted, and a small-range backflow phenomenon still exists. The flow velocity of water flow after the ridge is lower, the flow direction is basically vertical to the cross section of water, and the vector distribution of the flow velocity of the last cross section shows that the flow state of water flow entering the downstream river channel is fully improved, the flow velocity of water flow on the cross section is basically average, and the flow direction is basically consistent.
The inlet section of the water outlet pipe is selected as a characteristic section, the hydraulic characteristics of all components are analyzed, the flow velocity uniformity of the water inlet section is highest, and the water flow is closer to an ideal state, so that the flow velocity distribution of the water flow on the characteristic section in the embodiment is uniform, and the water flow has better hydraulic characteristics.
Working principle: when the water pump is used, the upper lock port or the lower lock port of the ship lock 1 is opened, algae-containing water enters the lock chamber, at the moment, the algae killing well 3 is started to perform algae killing operation, after algae is removed, the water is discharged through the water outlet transverse pipe 33, wherein the negative pressure generator 32 is arranged in the water outlet transverse pipe 33 and used for assisting water discharge, rectifying measures are taken after the water discharge, and the stability of water flow is maintained.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present invention within the scope of the technical concept of the present invention, and these equivalent changes all fall within the scope of the present invention.
Claims (2)
1. A river channel rectification analysis method is used for a river channel algae control system of a ship lock water conservancy junction, and is characterized by comprising the following steps:
establishing at least one flow field three-dimensional model, wherein the flow field three-dimensional model is established based on-site environment simulation and a preset installation environment, and the on-site environment at least comprises a ship lock and river characteristics; the preset installation environment at least comprises an algae killing well and an empty box bank wall;
establishing a water flow mathematical model based on the three-dimensional flow field model, and analyzing the flow state of water flow in the corresponding three-dimensional flow field model;
the flow state of the water flow is introduced into a three-dimensional streamline and a flow velocity distribution cloud picture for description;
introducing a flow mathematical model at least comprising a flow control equation and a turbulence model for analyzing physical quantities of flow regime of the water flow;
the flow field three-dimensional model adopts unstructured grids to carry out numerical simulation; the flow field three-dimensional model comprises a flow field three-dimensional model, a flow field three-dimensional model and a flow field three-dimensional model, wherein the flow field three-dimensional model is characterized in that the flow field three-dimensional model is locally encrypted in a structurally complex area;
an empty box bank wall is arranged based on the layout of the ship locks; the interior of the empty box bank wall is of a hollowed-out structure;
at least one group of algae killing wells are arranged in the empty box bank wall according to a preset sequence; each group of algae killing wells is correspondingly provided with a water outlet transverse pipe which is pre-buried in the empty box bank wall according to a preset angle and extends to the outer side of the gate wall;
the rectification structure is arranged at the river bottom and is arranged at the water outlet position close to the water outlet transverse pipe and used for stabilizing drainage of the lock chamber;
the empty box bank wall is arranged at the extension part of the gate wall, a dam gate is further arranged at a preset distance away from the outlet of the lower gate head, and the dam gate, the empty box bank wall and the lower gate head are combined into an overflow weir;
the side of the empty box bank wall is recessed backwards by a preset distance along the line to the outer side of the ship lock to form a backward region, and a water inlet of the algae killing well is arranged in the backward region;
algae water in the lock chamber goes through an algae killing well to kill algae and is discharged to the water area outside the bank wall of the empty box;
the algae killing well comprises:
the algae removal device is arranged in the bank wall of the empty box, and the water outlet transverse pipe is connected with the algae removal device;
the first gate valve is arranged at the position of the water outlet transverse pipe, which is close to the algae removal device; a second gate valve is further arranged on the other side of the water outlet transverse pipe;
the negative pressure generator is arranged in the water outlet transverse pipe; the negative pressure generator is arranged between the first gate valve and the second gate valve.
2. The river rectification analysis method of claim 1, wherein an anti-collision pier is arranged at the water inlet of the algae killing well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288920.2A CN114934495B (en) | 2022-03-23 | 2022-03-23 | River channel algae control system based on ship lock water conservancy junction and rectification analysis method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210288920.2A CN114934495B (en) | 2022-03-23 | 2022-03-23 | River channel algae control system based on ship lock water conservancy junction and rectification analysis method |
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| Publication Number | Publication Date |
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| CN114934495A CN114934495A (en) | 2022-08-23 |
| CN114934495B true CN114934495B (en) | 2023-11-24 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105159954A (en) * | 2015-08-17 | 2015-12-16 | 武汉理工大学 | Three-dimensional electronic nautical chart generating method based on GIS and virtual reality technology |
| CN106012953A (en) * | 2016-05-30 | 2016-10-12 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | Method for treating eutrophic lake cyanobacterial bloom |
| CN111074872A (en) * | 2020-01-10 | 2020-04-28 | 扬州大学 | Multifunctional ship lock combined with fishway and operation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105159954A (en) * | 2015-08-17 | 2015-12-16 | 武汉理工大学 | Three-dimensional electronic nautical chart generating method based on GIS and virtual reality technology |
| CN106012953A (en) * | 2016-05-30 | 2016-10-12 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | Method for treating eutrophic lake cyanobacterial bloom |
| CN111074872A (en) * | 2020-01-10 | 2020-04-28 | 扬州大学 | Multifunctional ship lock combined with fishway and operation method thereof |
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| Title |
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| 弯道入流进水池流态分析与整流措施研究;周珊珊等;水电能源科学;第39卷(第5期);第135-142页 * |
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