CN214149753U - Multi-functional basin system of ecological hydraulics of binary channels is experimental - Google Patents

Abstract

The utility model discloses a binary channels ecological hydraulics is experimental multi-functional basin system, include: a reservoir; a water tank filtration capacity water section arranged on the upstream side of the reservoir; a water tank body section arranged at the upstream of the water tank filtering water section; two sink energy dissipating sections; the water tank water inlet section is arranged below the upstream top end of the water tank body section; the rotary vane type throttling tail gate is arranged at the downstream of each channel of the trough body section of the water trough and close to the tail end; the water channel water outlet section is arranged at the downstream of the rotary vane type controllable tail gate; the test material feeding device comprises a rigid connecting pipeline, an automatic check valve, a test material feeding bin and a flexible connecting pipeline which are connected in sequence, wherein a pressure pump is arranged in the flexible connecting pipeline; the output end of the programmable logic controller is respectively connected with the input end of the rotary vane type throttling tail gate, the input end of the pressure pump, the input end of the electromagnetic valve and the input end of the variable frequency centrifugal pump, and the input end of the electromagnetic flowmeter is connected with the output end of the programmable logic controller.

Description

Multi-functional basin system of ecological hydraulics of binary channels is experimental

Technical Field

The utility model discloses a binary channels ecological hydraulics is experimental multi-functional basin system belongs to ecological hydraulics experimental field, is particularly useful for the velocity of flow size to fields such as research, alga residual body motion research of critical velocity research, alga that alga erodees drop of alga growth influence research.

Background

At present, a plurality of large-scale water delivery projects are built at home and abroad, and in order to ensure the water quality safety of water supply along the water delivery project, the prevention and control problem of abnormal proliferation of organisms such as algae on the canal wall of the water delivery project needs to be considered.

The method utilizes water flow to wash the algae on the wall of the canal to accelerate the shedding and the transportation of the algae, and is one of the treatment technical means for dealing with the abnormal proliferation of the algae, so that the research on the ecological hydraulics mechanism of the related algae, such as the research on the indoor temporary culture technology of the attached algae, the research on the growth mechanism of the attached algae, the research on the shedding mechanism of the attached algae, the research on the movement characteristics of the residual algae and the like, is necessary to develop, and provides theoretical basis and technical support for the long-acting prevention and control and the emergency treatment of water pollution and organisms in large-scale water delivery engineering.

On the other hand, when the currently in-situ cultured algae sample plate is collected to a laboratory, the algae sample plate is generally placed in a water tank for temporary culture, but the dominant population of the attached algae is inevitably changed in a still water environment for a long time, for example, the population preferring to the still water environment is propagated in a large quantity, and the population preferring to the dynamic water is apoptotic in a large quantity, so that the collected algae sample plate has a great difference between the result of a washing and shedding test and the field situation of a water delivery project.

However, there is no special test tank or test facility for performing an ecological hydraulics test on algae according to various functional requirements such as a mechanism of growth of the attached algae, a mechanism of scouring and shedding of the attached algae, and movement of the algae residue while temporarily culturing the algae in a flowing water environment.

The traditional hydraulic test water tank has the following defects:

1. the designed flow velocity range of the traditional indoor test water tank is small, the flow velocity of the common open channel water flowing tank is generally below 0.6m/s, and the continuous change flow velocity working condition from small flow velocity to high flow velocity, even ultrahigh flow velocity is difficult to form, so that the critical flow velocity of the algae which is washed and falls off is difficult to capture.

2. The traditional indoor test water tank does not have the temporary culture condition under the algae dynamic water environment.

3. The traditional indoor test water tank does not meet the condition of various algae ecological hydraulics tests at the same time.

4. The conventional indoor test water tank does not have parallel test conditions.

5. When the traditional indoor test water tank is used for carrying out algae related ecological hydraulics test research, the traditional indoor test water tank does not have the condition for carrying out the research on the influence of the scale effect.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: not enough to the aforesaid, the utility model provides an adjustable controllable, simple operation's ecological hydraulics of binary channels multifunctional water tank system of experiment.

The technical scheme is as follows: a multi-functional basin system of ecological hydraulics of binary channels is experimental, includes:

a reservoir;

a water tank filtered water section disposed on an upstream side of the reservoir;

the water tank body section is arranged at the upstream of the water tank filtration volume water section and comprises two channels, the section of each channel body is a rectangular section, the length of each channel body is 20-30 m, the side surfaces and the bottoms of the two channels are made of toughened glass, the top parts of the two channels are provided with a buckle type movable glass cover plate in a test section, the rest parts of the top parts of the two channels are provided with fixed glass cover plates, one side wall of each channel test section of the water tank body section is provided with 2-5 algae sample plate clamping grooves, and an organic glass sample plate matched with the algae sample plate clamping grooves is sleeved on the side wall of each channel test section of the water tank body section;

the two water tank energy dissipation sections are closed sections, connecting orifices are formed in the bottoms and the side portions of the two water tank energy dissipation sections, the side portions of the water tank energy dissipation sections are communicated with the upstream top end of each channel of the water tank body section, energy dissipation grids are arranged at the connecting positions of the water tank energy dissipation sections and the water tank body section, and the height of each water tank energy dissipation section is higher than that of the water tank body section;

the water tank inlet section is arranged below the top end of the upstream of the water tank body section and comprises a U-shaped branch pipe, the two branch pipes of the water tank inlet section are respectively communicated with the bottoms of the two water tank energy dissipation sections, each branch of the U-shaped branch pipe is respectively provided with an electromagnetic valve, and the two electromagnetic valves are used for respectively controlling the water inflow of each channel of the water tank body section;

the rotary-vane type check tail gate is arranged at the downstream of each channel of the water tank body section and close to the tail end;

the water outlet section of the water tank is arranged at the downstream of the rotary vane type throttling tail gate, and the water outlet of the water outlet section of the water tank is matched with the water inlet of the water filtering section of the water tank;

the test material feeding device comprises a rigid connecting pipeline, an automatic check valve, a test material feeding bin and a flexible connecting pipeline which are sequentially connected, wherein a pressure pump is arranged in the flexible connecting pipeline, a water inlet of the flexible connecting pipeline is communicated with the middle lower part of the reservoir, and a water outlet of the rigid connecting pipeline is communicated with the upstream side of each channel of the trough body section of the water trough;

the circulating pipeline is used for conveying water into the water tank body section, and an electromagnetic valve, an electromagnetic flowmeter and a variable frequency centrifugal pump are mounted on the circulating pipeline;

and the output end of the programmable logic controller is respectively connected with the input end of the rotary vane type throttling tail gate, the input end of the booster pump, the input end of the electromagnetic valve and the input end of the variable-frequency centrifugal pump, and the input end of the electromagnetic flowmeter is connected with the output end of the programmable logic controller.

Furthermore, the water tank filtering water section is provided with a middle clapboard which divides the water tank filtering water section into two channels, and the water flow of the water outlet of each channel of the water tank body section respectively flows into the channel corresponding to the water tank filtering water section and then converges into the reservoir.

Furthermore, each channel of the water tank filtering amount water section is respectively provided with an algae recovery net for filtering algae residues or test materials washed by each channel of the water tank body section, and the algae recovery net is arranged at a position more than 1m downstream of the water tank water outlet section.

Furthermore, each channel of the water tank filtering water measuring section is respectively provided with a water measuring weir for measuring the test flow of each channel of the water tank body section, the installation position of the water measuring weir is positioned at the downstream of the algae recovery net, and the distance between the water measuring weir and the algae recovery net is more than 5 times of the width of each channel of the water tank filtering water measuring section.

Further, buckle formula movable glass apron includes top panel, rubber stagnant water bed course, two buckles, wherein:

the rubber water stop cushion layer is arranged below the upper panel;

two sides of the upper panel are respectively connected with the buckles in a shaft connection mode;

the buckle is provided with a buckle groove, and the side walls of the two sides of the water tank body section are provided with buckle convex grooves matched with the buckle groove.

Further, the height of the water tank energy dissipation section is 2 times of the height of the water tank body section communicated with the water tank energy dissipation section.

Furthermore, the height of the section of one channel of the water tank body section is 40cm, the width of the section of the other channel of the water tank body section is 20cm, and the width of the section of the other channel of the water tank body section is 20 cm.

Furthermore, a pressure gauge is installed on the side wall of the upstream side of each channel of the water tank body section, and the output end of the pressure gauge is connected with the input end of the programmable logic controller.

Has the advantages that: the utility model discloses an ecological hydraulics of binary channels is experimental multi-functional basin system beneficial effect as follows:

1. the side and the bottom of the water tank body section are provided with high-strength toughened glass, the top of the tank body of the test section is provided with a buckle type movable glass cover plate, the tops of the rest of the tank bodies are provided with fixed glass cover plates, and the downstream of each channel of the water tank body section is provided with a rotary vane type adjustable tail gate, so that visual observation can be realized, open channel flow tests of small flow rate (0-0.2m/s) and medium flow rate (0.2m/s-0.6m/s) working conditions can be carried out, pressure flow tests of large flow rate (0.6m/s-1.5m/s) and ultra-large flow rate (1.5-3.0m/s) working conditions can be carried out, the adjustable range of the flow rate covers the actual normal running working condition and the full flow rate range of the emergency running working condition of the central line engineering in the north-south water diversion, and the test of a continuous flow rate interval from small to large can be carried out, the critical flow rate of the algae which is washed and shed can be effectively captured;

2. 2-5 algae sample plate clamping grooves are formed in the side wall of the tank body of the test section, so that an algae sample plate cultured in situ can be perfectly and fittingly clamped in the algae sample plate clamping grooves when an algae scouring and shedding critical flow rate test is carried out, on one hand, the algae sample plate is prevented from being flushed to the downstream under a high flow rate working condition, on the other hand, the algae sample plate can not protrude out of the side wall of the water tank, only the algae growing part is exposed out of the side wall, the algae growing state of the wall of the water delivery engineering channel is well simulated, and the algae scouring and shedding test is prevented from causing additional water body turbulence by the fact that the algae sample plate protrudes out of the side wall of the water tank; meanwhile, the organic glass sample plate which is matched with the algae sample plate clamping groove and has the same size can be placed in the algae sample plate clamping groove when tests such as algae residue movement and the like are carried out, so that the side wall of the water tank is restored to be flat in the test section, and the test result that the movement of the algae residue is influenced because additional water body turbulence is caused when water flows through the algae sample plate clamping groove section is avoided;

3. the top of the tank body of the test section is provided with the buckle type movable glass cover plate, and the upper panel of the buckle type movable glass cover plate, the rubber water stop cushion layer, the buckles of the two buckle type movable glass cover plates, the buckle groove and the buckle convex groove are structurally designed, so that when a critical flow rate test that algae is washed and shed is carried out, the closed water tank body can be conveniently and quickly opened, an algae sample plate is placed in the algae sample plate clamping groove, and the water is sealed and impermeable;

4. the water tank is provided with two sets of circulating systems capable of running independently, on one hand, when an algae sample plate cultured in situ is collected to a laboratory, temporary culture can be carried out in a low-flow-rate algae dynamic water environment in one channel, and on the other hand, tests such as low-flow-rate algae growth suitable flow rate or high-flow-rate algae scouring and shedding critical flow rate are carried out in the other channel; on the other hand, the two channels can be used for carrying out algae hydraulics tests under different working conditions in parallel, so that the test efficiency is greatly improved;

5. the utility model has the advantages that the test material feeding device is arranged at the upstream side of each channel of the trough body section of the water trough, so that the utility model can automatically feed the trace material of the algae residue under the conditions of different flow rates, especially under the conditions of high flow rate and pressurized flow, and the trace material only flows in the direction entering the trough body section of the water trough and cannot reversely overflow under the action of the automatic check valve and the pressurized pump in the feeding process, thereby realizing the research function of the motion characteristics of the algae residue under the conditions of different flow rates;

6. the dual-channel water tank system of the utility model can satisfy various algae ecological hydraulics test conditions such as temporary indoor culture of the attached algae, growth mechanism of the attached algae, scouring and dropping mechanism of the attached algae, research on motion characteristics of algae residues and the like, and is a comprehensive water tank system for multifunctional ecological hydraulics test;

7. the sizes of the two-channel rectangular water tank bodies are different, the section size of one channel is large, the height of the channel is 40cm, the width of the channel is 40cm, the section size of the other channel is small, the height of the channel is 20cm, the width of the channel is 20cm, and the design can be used for researching the influence of the scale effect of the algae ecological hydraulics test under the same flow speed condition;

8. by arranging the algae recovery net at the filtering capacity water section of the water tank, large algae which are washed off or tracer materials for an algae residue movement test can be effectively intercepted, and a circulating pipeline is prevented from being blocked;

9. the pressure gauge is arranged and installed on one side wall of the upstream of each channel of the water tank body section, so that the pressure condition of the water body of the water tank body can be monitored, particularly under the condition of high flow speed and pressure flow, the water pressure of the water tank body section can be controlled through the monitoring value of the pressure gauge, the water tank is prevented from bursting due to overlarge pressure, and the power of a pressure pump of the experimental material feeding device can be controlled in a feedback mode;

10. the section height of the water tank energy dissipation section is 2 times of the height of the water tank body section of the connecting channel, and the energy dissipation grating is arranged at the joint of the water tank energy dissipation section and the water tank body section, so that the pulse turbulence of the variable frequency centrifugal pump can be effectively eliminated, the water flow is kept stable after entering the water tank body section, and good water flow conditions are created for various hydraulic experiments of algae.

Drawings

Fig. 1 is a side view of a dual-channel algae hydraulics test multifunctional water tank system of the present invention, wherein arrows of flexible connecting pipes and water tank body sections in fig. 1 indicate water flow directions;

fig. 2 is a 3D diagram of a multifunctional water tank system (test material feeding device not shown) for a two-channel algae hydraulics test according to the present invention;

FIG. 3 is a schematic structural view of the water inlet section of the water tank;

FIG. 4 is a view of the structure of a snap-fit moving glass cover plate;

FIG. 5 is a perspective exploded view of the portion of the snap-in moving glass cover;

FIG. 6 is a cross-sectional view of a snap-in glass flap. Wherein:

1-water inlet section of water tank and 2-energy dissipation section of water tank

3-energy dissipation grating 4-water tank body section

5-pressure gauge 6-snap type movable glass cover plate

7-algae sample plate clamping groove 8-fixed glass cover plate

9-rotary vane type adjustable tail gate 10-water outlet section of water tank

11-water tank filtration water section 12-intermediate baffle

13-algae recovery net 14-water measuring weir

15-reservoir 16-electromagnetic valve

17-electromagnetic flowmeter 18-frequency conversion centrifugal pump

19-rigid connection pipe 20-automatic check valve

21-test material feed bin 22-pressure pump

23-flexible connecting pipe 24-upper panel

25-rubber water stop cushion layer 26-fastener

27-snap groove 28-snap tongue

The specific implementation mode is as follows:

the following describes the embodiments of the present invention in detail.

Detailed description of the preferred embodiment 1

As shown in fig. 1 to 6, a multifunctional water tank system for a two-channel ecological hydraulics test comprises:

a reservoir 15;

a water tank filtered water section 11 disposed on an upstream side of the water reservoir 15;

the water tank body section 4 is arranged at the upstream of the water tank filtering capacity water section 11, the water tank body section 4 comprises two channels, the section of each channel body is a rectangular section, the length of each channel body is 20m, the side faces and the bottoms of the two channels are made of toughened glass, the top parts of the two channels are provided with a buckle type movable glass cover plate 6 at a test section, the rest parts of the top parts of the two channels are provided with fixed glass cover plates 8, one side wall of each channel test section of the water tank body section 4 is provided with 2 algae sample plate clamping grooves 7 and is matched with organic glass sample plates matched with the algae sample plate clamping grooves 7, and the sizes of the algae sample plate clamping grooves 7 are matched with the sizes of algae sample plates cultured in situ;

the two water tank energy dissipation sections 2 are closed sections with connecting orifices at the bottoms and the sides, the sides of the water tank energy dissipation sections 2 are communicated with the upstream top end of a channel of a water tank body section 4, an energy dissipation grid 3 is arranged at the joint of the water tank energy dissipation sections 2 and the water tank body section 4, and the height of the water tank energy dissipation sections 2 is higher than that of the water tank body section 4;

the water tank inlet section 1 is arranged below the top end of the upstream of the water tank body section 4, the water tank inlet section 1 comprises two branch pipes, the two branch pipes of the water tank inlet section 1 are respectively communicated with the bottoms of the two water tank energy dissipation sections 2, each branch of the U-shaped branch pipe is respectively provided with an electromagnetic valve 16 (not shown in figure 1), and the two electromagnetic valves 16 are used for respectively controlling the water inflow of each channel of the water tank body section 4;

the rotary vane type controllable tail gate 9 is arranged at the downstream of each channel of the water tank body section 4 and close to the tail end, the flow is maximum when the rotary vane type controllable tail gate 9 is fully opened, the water flow can be completely controlled when the rotary vane type controllable tail gate is fully closed, and the flow is zero;

the water outlet section 10 of the water tank is arranged at the downstream of the rotary vane type controllable tail gate 9, and the water outlet of the water outlet section 10 of the water tank is matched with the water inlet of the water filtering section 11 of the water tank;

the test material feeding device comprises a rigid connecting pipeline 19, an automatic check valve 20, a test material feeding bin 21 and a flexible connecting pipeline 23 which are sequentially connected, wherein a pressure pump 22 is arranged in the flexible connecting pipeline 23, a water inlet of the flexible connecting pipeline 23 is communicated with the middle lower part of the reservoir 15, a water outlet of the rigid connecting pipeline 19 is communicated with the upstream side of a channel of the water tank body section 4, and each part of the test material feeding device is connected with a water-stopping rubber gasket through a nut;

the circulating pipeline is used for conveying water into the water tank body section 4, and an electromagnetic valve 16, an electromagnetic flowmeter 17 and a variable frequency centrifugal pump 18 are mounted on the circulating pipeline;

the output end of the programmable logic controller is respectively connected with the input end of the rotary vane type controllable tail gate 9, the input end of the pressure pump 22, the input end of the electromagnetic valve 16 and the input end of the variable frequency centrifugal pump 18, and the input end of the electromagnetic flowmeter 17 is connected with the output end of the programmable logic controller.

Furthermore, the water tank filtered water section 11 is provided with a middle partition plate 12 which divides the water tank filtered water section into two channels, and the water flow of the water outlet of each channel of the water tank body section 4 respectively flows into the channel corresponding to the water tank filtered water section 11 and then converges into the reservoir 15.

Furthermore, an algae recycling net 13 is respectively arranged in each channel of the water filtering capacity section 11 of the water tank and used for filtering algae residues or test materials washed down by each channel of the water tank body section 4 of the water tank, and the algae recycling net 13 is arranged at a position more than 1m downstream of the water outlet section 10 of the water tank.

Furthermore, a water measuring weir 14 is respectively arranged in each channel of the flume filtering water measuring section 11 and used for measuring the test flow of each channel of the flume body section 4, the installation position of the water measuring weir 14 is positioned at the downstream of the algae recovery net 13, and the distance between the water measuring weir 14 and the algae recovery net 13 is more than 5 times of the width of each channel of the flume filtering water measuring section 11.

Further, the snap-in moving glass cover 6 includes: upper panel 24, rubber stagnant water bed course 25, two buckles 26, buckle recess 27, buckle tongue 28, wherein:

a rubber water stop cushion layer 25 is arranged below the upper panel 24;

two sides of the upper panel 24 are respectively connected with the buckles 26 in a shaft connection mode;

the buckle 26 is provided with a buckle groove 27, and the side walls of the two sides of the water tank body section 4 are provided with buckle convex grooves 28 matched with the buckle groove 27.

Further, the height of the water tank energy dissipation section 2 is 2 times of the height of the water tank body section 4 communicated with the water tank energy dissipation section.

Furthermore, the height of the section of one channel of the water tank body section 4 is 40cm, the width of the section is 40cm, and the height of the section of the other channel of the water tank body section 4 is 20cm, and the width of the section is 20 cm.

Furthermore, a pressure gauge 5 is installed on one side wall of the upstream of each channel of the water tank body section 4, and the output end of the pressure gauge 5 is connected with the input end of the programmable logic controller.

Utilize the utility model discloses a binary channels algae hydraulics is experimental that multi-functional basin system goes on:

first, periphyton growth mechanism test

Step1 preparation before test

Checking whether the algae recovering net 13 is damaged or not, and if damaged, replacing the algae recovering net in time.

And (3) checking whether components such as the electromagnetic valve 16, the electromagnetic flowmeter 17, the variable-frequency centrifugal pump 18, the pressure gauge 5, the booster pump 22, the rotary vane type check tail gate 9 and the like and switches thereof are normal or not, and if the components are abnormal, timely maintaining or replacing the components.

And (3) checking whether the rubber water stop cushion layer 25 of the buckle type movable glass cover plate 6 is damaged or not, if damaged, replacing in time and avoiding water stop failure.

The reservoir 15 was filled with clear water for testing.

Step2 temporary indoor culture of periphyton

The algae sample plate which is cultured in situ in the large-scale water delivery project and has grown flourishing periphytic algae is quickly transported to an indoor laboratory.

The variable frequency centrifugal pump 18 is automatically started with small power through the programmable logic controller, the opening degrees of an electromagnetic valve 16 arranged in a circulating pipeline, the electromagnetic valves 16 arranged on two forks of a U-shaped fork pipe of the water tank water inlet section 1 and a rotary vane type adjustable tail gate 9 at the tail end of each channel of the water tank body section 4 are adjusted, so that the channel to be temporarily cultured in the water tank body section 4 operates in a state of low flow rate (less than 0.5m/s), high water level and open channel flow.

And (4) taking out the algae sample plate, sucking redundant water on the algae sample plate by using a water absorption test paper, and weighing and recording the background information such as the wet weight, the longest algae filament length and the like of the algae sample plate just sampled.

And opening a buckle type movable glass cover plate 6 of a channel to be temporarily cultured in the water tank body section 4, and placing the algae sample plate in an algae sample plate clamping groove 7.

Fastening the buckle type movable glass cover plate 6, temporarily culturing for 2-3 days, and performing subsequent tests after the algae sample plate dies due to transportation or the still water loving population growing in the still water transportation environment falls off due to normal metabolism.

Step3 recording the characteristic information of the periphyton after the temporary culture is stable

Opening a buckle type movable glass cover plate 6 of a channel to be subjected to the attached algae growth mechanism test in the water tank body section 4, taking out an algae sample plate to be subjected to the attached algae growth mechanism test, sucking excess water on the algae sample plate by using water absorption test paper, weighing and recording information such as the wet weight of the algae sample plate after temporary culture is stable, the length of the longest algae filament and the like. The algae coupon is then replaced in the algae coupon slot 7 and the snap-in removable glass cover 6 is fastened.

Step 4: regulation of water channel flow and water level

The programmable logic controller executes a periphyton growth mechanism test mode, a large channel (the section size is 40cm in height and 40cm in width) is selected to enter the periphyton growth mechanism test mode, and a small channel (the section size is 20cm in height and 20cm in width) still maintains the temporary algae culture mode.

Then, the programmable logic control executes the flow velocity parameter of 0.3m/s and the water level parameter of 35cm, and clicks the confirmation button, the variable frequency centrifugal pump 18 will automatically and slowly adjust the frequency to the frequency corresponding to the corresponding flow velocity, the electromagnetic valve 16 installed on the branch pipe at one side of the large channel of the U-shaped branch pipe of the water inlet section 1 of the water tank and the rotary vane type adjustable tail gate 9 in the large channel of the water tank body section 4 will automatically and slowly adjust the opening, so that the water level in the large channel of the water tank body section 4 reaches the preset condition. The working condition is an open channel flow state, and the pressure gauge 5 arranged on one side of the large channel of the water channel body section 4 cannot be triggered to start.

Step5, collecting and recording the characteristic information of the periphyton at regular time

Opening a buckle type movable glass cover plate 6 arranged at the top of the large channel of the water tank body section 4 every 4 hours, taking out the algae sample plate from the algae sample plate clamping groove 7, sucking the excessive water on the algae sample plate by using water absorption test paper, and weighing and recording the information of the wet weight, the longest algae filament length and the like of the algae sample plate.

After 1 time of collecting and recording the characteristic information of the attached algae, the buckle type movable glass cover plate 6 is fastened.

And (3) continuously carrying out timing sampling and data recording for 5 days for 120 hours in total, comparing the information of the algae sample plate after temporary culture stability, the longest algae filament length and the like, and analyzing and summarizing the growth characteristics of the attached algae under the working condition of the flow speed of 0.3m/s and the water depth of 35 cm.

Step6 finishing work for a group of experiments

After a group of tests are finished, the programmable logic controller controls the electromagnetic valve 16 of the branch pipe on one side of the large channel of the U-shaped branch pipe of the water inlet section 1 of the water tank and the rotary vane type sectional tail gate 9 in the large channel of the water tank body section 4 to be automatically and slowly closed.

The algae sample after the test is taken out, and the algae recovery net 13 arranged on one side of the large channel of the water tank transition water section 11 is cleaned.

The algae sample plates temporarily cultured in the small channels of the water tank body section 4 are taken out and placed in the algae sample plate clamping grooves 7 in the large channels of the water tank body section 4.

The next batch of in situ cultured algae swatches was transported to the laboratory and placed in a small tunnel in the flume section 4 for temporary rearing.

Step 7: adjusting the test conditions, and performing a series of tests

By adjusting the flow rate and water depth parameters, Step3-Step6 are repeated to carry out a series of experiments.

The mechanism of growth of the periphyton algae is summarized by a large amount of data analysis.

Second, periphyton scouring and shedding mechanism test

Step1 preparation before test

Checking whether the algae recovering net 13 is damaged or not, and if damaged, replacing the algae recovering net in time.

And (3) checking whether components such as the electromagnetic valve 16, the electromagnetic flowmeter 17, the variable-frequency centrifugal pump 18, the pressure gauge 5, the booster pump 22, the rotary vane type check tail gate 9 and the like and switches thereof are normal or not, and if the components are abnormal, timely maintaining or replacing the components.

And (3) checking whether the rubber water stop cushion layer 25 of the buckle type movable glass cover plate 6 is damaged or not, if damaged, replacing in time and avoiding water stop failure.

The reservoir 15 was filled with clear water for testing.

Step2 temporary indoor culture of periphyton

The algae sample plate which is cultured in situ in the large-scale water delivery project and has grown flourishing periphytic algae is quickly transported to an indoor laboratory.

The programmable logic controller automatically turns on the variable frequency centrifugal pump 18 with small power, and adjusts the opening degree of an electromagnetic valve 16 arranged in a circulating pipeline, the electromagnetic valves 16 arranged on two forks of a U-shaped fork pipe of the water tank water inlet section 1 and a rotary vane type adjustable tail gate 9 at the tail end of each channel of the water tank body section 4, so that the channel to be temporarily cultured in the water tank body section 4 operates in a state of low flow rate (less than 0.5m/s), high water level and open channel flow.

And (4) taking out the algae sample plate, sucking redundant water on the algae sample plate by using a water absorption test paper, and weighing and recording the background information such as the wet weight, the longest algae filament length and the like of the algae sample plate just sampled.

And opening a buckle type movable glass cover plate 6 of a channel to be temporarily cultured in the water tank body section 4, and placing the algae sample plate in an algae sample plate clamping groove 7.

Fastening the buckle type movable glass cover plate 6, temporarily culturing for 2-3 days, and performing subsequent tests after the algae sample plate dies due to transportation or the still water loving population growing in the still water transportation environment falls off due to normal metabolism.

Step3 recording the characteristic information of the periphyton after the temporary culture is stable

Opening a buckle type movable glass cover plate 6 of a channel to be subjected to the attached algae scouring and falling mechanism test in the water tank body section 4, taking out an algae sample plate to be subjected to the attached algae scouring and falling mechanism test, sucking excess water on the algae sample plate by using water absorption test paper, and weighing and recording information such as the wet weight of the algae sample plate after temporary culture is stable, the length of the longest algae filament and the like. The algae coupon is then replaced in the algae coupon slot 7 and the snap-in removable glass cover 6 is fastened.

Step 4: regulation of water channel flow and water level

The programmable logic controller selects a large channel (the section size is 40cm in height and 40cm in width) to enter a periphyton washing and shedding mechanism test mode, and the small channel (the section size is 20cm in height and 20cm in width) still keeps the temporary algae culture mode.

The programmable logic controller executes a flow velocity parameter of 1.0m/s and a water level parameter of 40cm, the variable frequency centrifugal pump 18 automatically and slowly adjusts the frequency to the frequency corresponding to the corresponding flow velocity, the electromagnetic valve 16 of the branch pipe on one side of the large channel of the U-shaped branch pipe of the water channel water inlet section 1 and the rotary vane type adjustable tail gate 9 in the large channel of the water channel body section 4 automatically and slowly adjust the opening degree, so that the water level in the large channel of the water channel body section 4 reaches a preset condition. The working condition is a pressure flow state, a pressure gauge 5 arranged on one side of a large channel of the water channel body section 4 is automatically triggered and started, the water pressure state in the large channel of the water channel body section 4 during operation is recorded, and if the water pressure state reaches 0.8 times of the burst critical pressure, an automatic alarm is given out to prompt a user to reduce the frequency of the variable frequency centrifugal pump 18 or open the opening of the large rotary vane type check tail gate 9.

Step5, continuously flushing the algae sample plate and collecting and recording the characteristic information of the attached algae

When the flow state in the large channel of the trough body section 4 of the water trough is stable, the algae sample plate is continuously washed for 1 hour.

The programmable logic controller controls an electromagnetic valve 16 of a branch pipe arranged on one side of a large channel of a U-shaped branch pipe of the water inlet section 1 of the water tank and a rotary vane type check tail gate 9 in the large channel of the water tank body section 4 to be automatically and slowly closed.

And opening a buckle type movable glass cover plate 6 arranged at the top of the large channel of the water tank body section 4, taking out the algae sample plate from the algae sample plate clamping groove 7, sucking redundant water on the algae sample plate by using water absorption test paper, and weighing and recording information such as the wet weight of the algae sample plate, the length of the longest algae filament and the like.

Comparing the information of the algae sample plate after temporary culture stability, such as wet weight, longest algae filament length and the like, analyzing and summarizing the scouring and shedding condition of the attached algae under the working condition of the flow speed of 1.0m/s and the water depth of 40 cm.

Step6 finishing work for a group of experiments

After a group of tests are finished, the programmable logic controller controls the electromagnetic valve 16 of the branch pipe on one side of the large channel of the U-shaped branch pipe of the water inlet section 1 of the water tank and the rotary vane type sectional tail gate 9 in the large channel of the water tank body section 4 to be automatically and slowly closed.

The algae sample after the test is taken out, and the algae recovery net 13 arranged on one side of the large channel of the water tank transition water section 11 is cleaned.

The algae sample plates temporarily cultured in the small channels of the water tank body section 4 are taken out and placed in the algae sample plate clamping grooves 7 in the large channels of the water tank body section 4.

The next batch of in situ cultured algae swatches was transported to the laboratory and placed in a small tunnel in the flume section 4 for temporary rearing.

Step 7: adjusting the test conditions, and performing a series of tests

By adjusting the flow rate and water depth parameters, Step3-Step6 are repeated to carry out a series of experiments.

Through a large amount of data analysis, the critical flow rate of the attached algae scouring and shedding is obtained, and the mechanism of the attached algae scouring and shedding is summarized.

Third, influence mechanism test of scale effect on algae scouring and shedding

Step1 preparation before test

Checking whether the algae recovering net 13 is damaged or not, and if damaged, replacing the algae recovering net in time.

And (3) checking whether components such as the electromagnetic valve 16, the electromagnetic flowmeter 17, the variable-frequency centrifugal pump 18, the pressure gauge 5, the booster pump 22, the rotary vane type check tail gate 9 and the like and switches thereof are normal or not, and if the components are abnormal, timely maintaining or replacing the components.

And (3) checking whether the rubber water stop cushion layer 25 of the buckle type movable glass cover plate 6 is damaged or not, if damaged, replacing in time and avoiding water stop failure.

The reservoir 15 was filled with clear water for testing.

Step2 temporary indoor culture of periphyton

The algae sample plate which is cultured in situ in the large-scale water delivery project and has grown flourishing periphytic algae is quickly transported to an indoor laboratory.

The programmable logic controller automatically turns on the variable frequency centrifugal pump 18 with small power, and adjusts the opening of the electromagnetic valve 16 arranged in the circulating pipeline, the electromagnetic valves 16 arranged on two forks of the U-shaped fork pipe of the water tank water inlet section 1 and the rotary vane type adjustable tail gate 9 at the tail end of each channel of the water tank body section 4, so that each channel in the water tank body section 4 operates in a state of low flow rate (less than 0.5m/s), high water level and open channel flow.

And (4) taking out the algae sample plate, sucking redundant water on the algae sample plate by using a water absorption test paper, and weighing and recording the background information such as the wet weight, the longest algae filament length and the like of the algae sample plate just sampled.

And opening the snap-in movable glass cover plates 6 of the two channels in the trough body section 4 of the water trough, and placing the algae sample plates in the algae sample plate clamping grooves 7.

Fastening the buckle type movable glass cover plate 6, temporarily culturing for 2-3 days, and performing subsequent tests after the algae sample plate dies due to transportation or the still water loving population growing in the still water transportation environment falls off due to normal metabolism.

Step3 recording the characteristic information of the periphyton after the temporary culture is stable

Opening the snap-in movable glass cover plates 6 of the two channels in the water tank body section 4, taking out the algae sample plate to be subjected to the attached algae scouring and shedding mechanism test, sucking excess water on the algae sample plate by using water absorption test paper, and weighing and recording the information such as the wet weight of the algae sample plate after temporary culture stability, the length of the longest algae filament and the like. The algae coupon is then replaced in the algae coupon slot 7 and the snap-in removable glass cover 6 is fastened.

Step 4: regulation of water channel flow and water level

The programmable logic controller executes the inserted algae scouring and falling mechanism test mode, and selects a large channel (the section size is 40cm in height and 40cm in width) and a small channel (the section size is 20cm in height and 20cm in width) to enter the inserted algae scouring and falling mechanism test mode.

The programmable logic controller executes a flow velocity parameter 1.5m/s, a water level parameter 40cm, a flow velocity parameter 1.5m/s required by a small channel test, a water level parameter 20cm, the variable frequency centrifugal pump 18 automatically and slowly adjusts the frequency to the frequency corresponding to the corresponding flow velocity, the electromagnetic valves 16 arranged at two forks of the U-shaped fork pipe of the water inlet section 1 of the water tank and the rotary vane type section tail gates 9 in the two channels of the water tank body section 4 automatically and slowly adjust the opening degree, so that the water levels of the two channels of the water tank body section 4 reach a preset condition. The working condition is a pressure flow state, the pressure gauge 5 arranged on the side of the side wall of the two channels of the water channel body section 4 is automatically triggered to start, the water pressure state in the two channels of the water channel body section 4 during operation is recorded, and if the water pressure state reaches 0.8 times of the burst critical pressure, an automatic alarm is given to prompt a user to reduce the frequency of the variable frequency centrifugal pump 18 or open the large rotary vane type throttle tail gate 9.

Step5: continuously flushing the algae sample plate and collecting and recording the characteristic information of the attached algae

When the flow state in the two channels of the trough body section 4 of the water trough is stable, the algae sample plate is continuously washed for 1 hour.

The programmable logic controller controls an electromagnetic valve 16 arranged in a U-shaped branch pipe of the water inlet section 1 of the water tank and a rotary vane type check tail gate 9 in two channels of the water tank body section 4 of the water tank to be automatically and slowly closed.

And opening a buckle type movable glass cover plate 6 arranged at the tops of the two channels of the water tank body section 4, taking out the algae sample plate from the algae sample plate clamping groove 7, sucking redundant water on the algae sample plate by using water absorption test paper, and weighing and recording information such as the wet weight of the algae sample plate, the length of the longest algae filament and the like.

Step6: scale effect analysis at the same flow rate

Comparing the information of the algae sample plate wet weight, the longest algae filament length and the like after temporary culture stabilization, analyzing the condition that the attached algae in a large channel (the section size is 40cm in height and 40cm in width) and a small channel (the section size is 20cm in height and 20cm in width) are washed and shed under the condition of the same flow speed of 1.5m/s, and summarizing the influence mechanism of the scale effect on the washing and shedding of the algae under the condition of the same flow speed.

Step 7: finishing work at the end of a test

After a group of tests are finished, the programmable logic controller controls the electromagnetic valve 16 of the U-shaped branch pipe arranged at the water inlet section 1 of the water tank and the rotary vane type check tail gate 9 in the two channels of the water tank body section 4 of the water tank to be automatically and slowly closed.

The algae sample after the test is taken out, and the algae recovery nets 13 arranged in the two channels of the water tank transition water section 11 are cleaned.

The next batch of in situ cultured algae swatches was transported to the laboratory and placed in two channels of the flume section 4 for temporary rearing.

Four, parallel test of algae residue movement

Step1 preparation before test

Checking whether the algae recovering net 13 is damaged or not, and if damaged, replacing the algae recovering net in time.

And (3) checking whether components such as the electromagnetic valve 16, the electromagnetic flowmeter 17, the variable-frequency centrifugal pump 18, the pressure gauge 5, the booster pump 22, the rotary vane type check tail gate 9 and the like and switches thereof are normal or not, and if the components are abnormal, timely maintaining or replacing the components.

And (3) checking whether the rubber water stop cushion layer 25 of the buckle type movable glass cover plate 6 is damaged or not, if damaged, replacing in time and avoiding water stop failure.

Checking whether the inlet of the flexible connecting pipe 23 placed in the reservoir 15 is submerged below the water surface of the reservoir 15, and if not, adjusting the inlet position of the flexible connecting pipe 23 in time.

The test material feeding bin 21 is unscrewed, algae residues or model tracer materials with similar specific gravity and particle size to the algae residues collected on the site of large-scale water delivery engineering are loaded, and then the test material feeding bin 21 is screwed well, so that the test material feeding bin is well connected with the automatic check valve 20 and the flexible connecting pipe 23.

All the matched organic glass sample plates with the same size as the algae sample plate clamping grooves 7 are placed in the algae sample plate clamping grooves 7, the grooves of the algae sample plate clamping grooves 7 are filled, the inner walls of the two channels of the water tank body section 4 are smooth and flat, and extra turbulence is generated when tracer materials flow through the sections of the algae sample plate clamping grooves 7 during an algae residue motion test.

The reservoir 15 was filled with clear water for testing.

Step2: regulation of water channel flow and water level

The programmable logic controller executes the test mode that the large channel (the section size: 40cm in height is multiplied by 40cm in width) and the small channel (the section size: 20cm in height is multiplied by 20cm in width) enter the movement mechanism of the algae residues.

Then, the programmable logic controller executes the flow velocity parameter 1.5m/s, the water level parameter 40cm, the flow velocity parameter 1.0m/s and the water level parameter 20cm which are required by the large channel test, the frequency conversion centrifugal pump 18 automatically and slowly adjusts the frequency to the frequency corresponding to the corresponding flow velocity, the electromagnetic valves 16 which are arranged at two forks of the U-shaped fork pipe of the water inlet section 1 of the water tank and the rotary vane type section tail gate 9 in the two channels of the water tank body section 4 automatically and slowly adjust the opening degree, and the water levels of the two channels of the water tank body section 4 reach the preset condition. The working condition is a pressure flow state, the pressure gauge 5 arranged on the side of the side wall of the two channels of the water channel body section 4 is automatically triggered to start, the water pressure state in the two channels of the water channel body section 4 during operation is recorded, and if the water pressure state reaches 0.8 times of the burst critical pressure, an automatic alarm is given to prompt a user to reduce the frequency of the variable frequency centrifugal pump 18 or open the large rotary vane type throttle tail gate 9.

Step3 addition of algal residue tracer material

After the flow state in two passageways of basin groove body section 4 is stable, force(s) 22 that programmable logic controller connects on different basin passageways will be according to installing the respective pressurization power of the pressure numerical value automatic adjustment of the manometer 5 of two passageway boundary walls sides of basin groove body section 4, rivers in the cistern 15 will be through flexible connecting tube 23 pump income test material throw feed bin 21, drive algae residue or model tracer material and flow through automatic check valve 20, flow into in two passageways of basin groove body section 4, make algae residue tracer material can keep stable speed and throw in and get into the basin system, automatic check valve 20 can prevent algae residue tracer material's adverse current simultaneously.

Step 4: parallel observation of the movement characteristics of the algal residues on the two test channels

The high-speed camera is used, the motion conditions of the algae residue tracer materials are shot and recorded on the outer sides of the glass side walls of the two channels of the water tank body 4 in parallel, parallel tests of the motion characteristics of the algae residues under 2 groups of working conditions with different flow rates are realized, and the test efficiency is effectively improved.

Step5 finishing work for a group of experiments

After a group of tests are finished, the programmable logic controller controls the electromagnetic valve 16 of the U-shaped branch pipe arranged at the water inlet section 1 of the water tank and the rotary vane type check tail gate 9 in the two channels of the water tank body section 4 of the water tank to be automatically and slowly closed.

Clearing the algae recovering net 13 arranged in the two channels of the transition water section 11 of the water tank.

Specific example 2

Substantially the same as in example 1, except that:

the length of each channel body of the water channel body section 4 is 30 m;

one side wall of each channel test section of the water tank body section 4 is provided with 5 algae sample plate clamping grooves 7.

Specific example 3

Substantially the same as in example 1, except that:

the length of each channel body of the water channel body section 4 is 25 m;

and 3 algae sample plate clamping grooves 7 are formed in one side wall of each channel test section of the water tank body section 4.

The embodiments of the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by a person of ordinary skill in the art.

Claims (8)

1. The utility model provides a multi-functional basin system of ecological hydraulics of binary channels is experimental, its characterized in that includes:

a reservoir;

a water tank filtered water section disposed on an upstream side of the reservoir;

the water tank body section is arranged at the upstream of the water tank filtration volume water section and comprises two channels, the section of each channel body is a rectangular section, the length of each channel body is 20-30 m, the side surfaces and the bottoms of the two channels are made of toughened glass, the top parts of the two channels are provided with a buckle type movable glass cover plate in a test section, the rest parts of the top parts of the two channels are provided with fixed glass cover plates, one side wall of each channel test section of the water tank body section is provided with 2-5 algae sample plate clamping grooves, and an organic glass sample plate matched with the algae sample plate clamping grooves is sleeved on the side wall of each channel test section of the water tank body section;

the two water tank energy dissipation sections are closed sections, connecting orifices are formed in the bottoms and the side portions of the two water tank energy dissipation sections, the side portions of the water tank energy dissipation sections are communicated with the upstream top end of each channel of the water tank body section, energy dissipation grids are arranged at the connecting positions of the water tank energy dissipation sections and the water tank body section, and the height of each water tank energy dissipation section is higher than that of the water tank body section;

the water tank inlet section is arranged below the top end of the upstream of the water tank body section and comprises a U-shaped branch pipe, the two branch pipes of the water tank inlet section are respectively communicated with the bottoms of the two water tank energy dissipation sections, each branch of the U-shaped branch pipe is respectively provided with an electromagnetic valve, and the two electromagnetic valves are used for respectively controlling the water inflow of each channel of the water tank body section;

the rotary-vane type check tail gate is arranged at the downstream of each channel of the water tank body section and close to the tail end;

the water outlet section of the water tank is arranged at the downstream of the rotary vane type throttling tail gate, and the water outlet of the water outlet section of the water tank is matched with the water inlet of the water filtering section of the water tank;

the test material feeding device comprises a rigid connecting pipeline, an automatic check valve, a test material feeding bin and a flexible connecting pipeline which are sequentially connected, wherein a pressure pump is arranged in the flexible connecting pipeline, a water inlet of the flexible connecting pipeline is communicated with the middle lower part of the reservoir, and a water outlet of the rigid connecting pipeline is communicated with the upstream side of each channel of the trough body section of the water trough;

the circulating pipeline is used for conveying water into the water tank body section, and an electromagnetic valve, an electromagnetic flowmeter and a variable frequency centrifugal pump are mounted on the circulating pipeline;

and the output end of the programmable logic controller is respectively connected with the input end of the rotary vane type throttling tail gate, the input end of the booster pump, the input end of the electromagnetic valve and the input end of the variable-frequency centrifugal pump, and the input end of the electromagnetic flowmeter is connected with the output end of the programmable logic controller.

2. The multifunctional water tank system for the two-channel ecological hydraulics test as claimed in claim 1, wherein the water tank filtering water section is provided with a middle partition plate to divide the water tank filtering water section into two channels, and the water flow of the water from each channel of the water tank body section flows into the channel corresponding to the water tank filtering water section respectively and then flows into the reservoir.

3. The multifunctional water tank system for two-channel ecological hydraulics test as claimed in claim 1, wherein an algae recovery net is disposed in each channel of the filtering water section of the water tank for filtering algae residues or test materials flushed from each channel of the body section of the water tank, and the algae recovery net is disposed at a position more than 1m downstream of the water outlet section of the water tank.

4. The multifunctional flume system for two-channel ecological hydraulics test as claimed in claim 3, wherein a weir is disposed in each channel of the flume filtered water measuring section for measuring the test flow rate of each channel of the flume body section, the weir is installed downstream of the algae recovery net, and the distance between the weir and the algae recovery net is more than 5 times the width of each channel of the flume filtered water measuring section.

5. The multifunctional water tank system for the two-channel ecological hydraulics test as claimed in claim 1, wherein the snap-on movable glass cover plate comprises an upper panel, a rubber water stop cushion layer and two snaps, wherein:

the rubber water stop cushion layer is arranged below the upper panel;

two sides of the upper panel are respectively connected with the buckles in a shaft connection mode;

the buckle is provided with a buckle groove, and the side walls of the two sides of the water tank body section are provided with buckle convex grooves matched with the buckle groove.

6. The multifunctional water tank system for the two-channel ecological hydraulics test as claimed in claim 1, wherein the height of the energy dissipation section of the water tank is 2 times of the height of the body section of the water tank communicated with the energy dissipation section of the water tank.

7. The multifunctional flume system for two-channel ecological hydraulics test as claimed in claim 1, wherein the section of one channel of the flume body section has a height of 40cm and a width of 40cm, and the section of the other channel of the flume body section has a height of 20cm and a width of 20 cm.

8. The multifunctional water tank system for the two-channel ecological hydraulics test as claimed in claim 1, wherein a pressure gauge is installed on an upstream side wall of each channel of the tank body section of the water tank, and an output end of the pressure gauge is connected with an input end of the programmable logic controller.

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