CN209368767U - A kind of watering cycle control system applied to experimental trough - Google Patents
A kind of watering cycle control system applied to experimental trough Download PDFInfo
- Publication number
- CN209368767U CN209368767U CN201821976875.5U CN201821976875U CN209368767U CN 209368767 U CN209368767 U CN 209368767U CN 201821976875 U CN201821976875 U CN 201821976875U CN 209368767 U CN209368767 U CN 209368767U
- Authority
- CN
- China
- Prior art keywords
- water
- experimental trough
- pond
- flow
- steady
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Flow Control (AREA)
Abstract
A kind of watering cycle control system applied to experimental trough, including experimental trough and steady pond, the one end in experimental trough and steady pond is provided with and communicated with a connecting pipe, the water flow in experimental trough is sent to steady pond by the communicating pipe, the other end in steady pond offers watering cycle control assembly, water delivery general pipeline will be passed through after water body energization by the watering cycle control assembly and input experimental trough again, water body is circulated by experimental trough, communicating pipe, steady pond and water delivery general pipeline continuous effective；The steady flow and unsteady flow that the utility model generates have the characteristics that flow adjustment process is steady, range is wide, with high accuracy, the flow control of the utility model uses the distributed AC servo system system based on communication, flow control and detection hardware device are distributed to in-site installation, the system failure is decentralized, single flow detection or control device fails, which will not be directly coupled on monitoring computer, causes the system failure, system overall operation high reliablity.
Description
Technical field
The utility model relates to automatically-monitored field more particularly to a kind of confessions of the experimental trough applied to different length
Water circulation control system realizes the automatically-monitored of flow.
Background technique
Currently, in water flow physical model experiment room, commonly using a kind of water flow sink as experimental facilities, this water
Gutter channel obtains corresponding experiment parameter by simulated flow characteristic and the basic law of sediment movement.
The watering cycle method of water flow sink under the prior art is using three-dimensional and two kinds of technologies of plane formula, tool
Body is as follows:
Three-dimensional watering cycle technology uses par tower as supply equipment, draws water from reservoir and be sent into par tower,
Water flow is controlled by overflow groove and generates steady flow, then inputs sink and is tested, and is finally discharged into reservoir and is completed water circulation,
Flow is up to 0.5m3/ the second.It is 6~8m that par tower, which is typically designed height, and volume is about 70m3Left and right, it is mixed using steel construction or reinforcing bar
Xtah Crude Clay structure is built.
But the flat water tower water-feeding under the prior art is disadvantageous in that:
1) par tower is only used for steady flow test, it is impossible to be used in unsteady flow test, and when steady flow needs to change,
Its is complicated for operation and takes a long time；
2) par tower spilling water water is larger, spilling water can be directly discharged into reservoir and be not involved in test, so water on the whole
Utilization efficiency is lower；
If 3) laboratory needs to build par tower, more space and place can be occupied, construction cost is also relatively opposite
It is higher.
And in order to solve some problem of flat water tower water-feeding, the plane formula that the prior art had developed water flow sink later supplies
Water round-robin method.In this scheme, reversing current two-way pump and flow meter are substituted into par tower at flow controller, passed through
Pipeline connect to form water circulation channel with sink both ends, adds water body reciprocation cycle between sink and pipeline after water, no longer arranges
Enter reservoir, flow controller control generates the flow needed.Since all devices substantially exist together a plane, therefore it is referred to as flat
Face formula circulating water supply.The plane formula watering cycle method is compared with three-dimensional circulating water supply method, and plane formula circulating water supply is not only
Big quantity space, place and test water are saved, and the steady flow and non-perseverance generated within the scope of effective discharge can be quickly converted
Constant current.
But field test personnel are by prolonged operation and feedback discovery, plane formula circulating water supply method there is also
There is the defect for being difficult to overcome, specific as follows:
1) smoothness of discharge process is undesirable, especially in low water level or flow close to the top and end of design discharge
When；
2) limited length of experimental trough, water outlet water level is too low to cause water pump air inlet；
3) the problem of water flow cannot be too big, otherwise can also cause water pump air inlet；
4) the test depth of water cannot be too low, can equally cause water pump air inlet；
Above-mentioned 4 problems are since the structure of plane formula circulating water supply itself causes, in addition, plane formula circulating water supply is also difficult
To realize the wide-range high-accuracy control of flow.
In conclusion so far, there is not yet disclosed report, discussion and technology can be suitably used for long and short different water
Slot, and the watering cycle method of high-low water level, the water flow test that size flow velocity combines entirely can be carried out, thus it is in the urgent need to address at present
This problem.
Utility model content
To solve the above-mentioned problems, the utility model is existing three-dimensional suitable with plane formula watering cycle technology in comprehensive analysis
On the basis of situation, a kind of watering cycle control system applied to experimental trough is provided, the control system is by again
The structure of design so that water body stability and high efficiency in sink and pipeline exchange, and high-precision stabilization is carried out to water flow
Control, it is any from low water level to high water level, from low flow velocity to high flow rate to the water flow physical Model Study carried out in sink
Combination, can high quality realization.
A kind of watering cycle control system applied to experimental trough of the utility model, specific structure are as described below:
A kind of watering cycle control system applied to experimental trough, including experimental trough and steady pond, it is characterised in that:
One end of the experimental trough and steady pond is provided with and communicated with a connecting pipe, by the communicating pipe by experimental trough
In water flow send to steady pond；
The other end in the steady pond offers watering cycle control assembly, by the watering cycle control assembly by water
Experimental trough is inputted by water delivery general pipeline again after body energization, water body is total by experimental trough, communicating pipe, steady pond and water delivery
Circulate to pipe continuous effective；
The steady pond its be specially a decanter type pond excavated on ground level, the bottom of pond height ratio in the steady pond
Low 1.0m~the 2.5m of slot bottom height of experimental trough, and the pond heights of roofs in steady pond is then higher than peak level designed by experimental trough
0.2m~0.5m, and the volume in steady pond is the 50%~100% of experimental trough volume, the pool wall in steady pond offers nozzle,
The nozzle is connected to the watering cycle control assembly of the communicating pipe of water inlet and water outlet respectively, the quantity of nozzle and pore size according to
Maximum water supply determines.
A kind of watering cycle control system applied to experimental trough according to the present utility model, which is characterized in that described
Watering cycle control assembly include delivery pipe branch, flowmeter, electromagnetic flux converter, flow data collector network, flow control
Device, monitoring computer, water delivery control network, frequency converter and immersible pump composition processed, wherein delivery pipe branch shares 3~6, each item
Pipeline connection in one end pond Jun Yuwen pond of delivery pipe branch, and the other end of delivery pipe branch is connected to after collecting with water delivery general pipeline,
It is specially an electromagnetic flow transducer to flowmeter, which is mounted in delivery pipe branch, and flowmeter and Electromagnetic Flow are converted
The connection of device data-signal, the electromagnetic flux converter are connected to by flow data collector network with flow controller data-signal,
The flow controller is connected to the monitoring computer data signal that backstage is arranged in, and the flow controller controls net by water delivery
Network and data of frequency converter signal communication, frequency converter, which then connects to control, to be arranged at the nozzle that delivery pipe branch is connect with steady pond
Immersible pump inside delivery pipe branch, the immersible pump is then to delivery pipe branch water delivery.
At this designed for, delivery pipe branch as water outlet aperture is preferably small in design and quantity more (3~6
Item), compared with the communicating pipe of large aperture, a fairly large number of small-bore delivery pipe branch scheme can be realized the reality of wide-range high-accuracy
Sink flow control is tested, and total cost can be more economical.And each delivery pipe branch that immersible pump is distributed and is mounted in steady pond
At inside delivery pipe branch at the nozzle being connect with steady pond, so that connecting after the lesser delivery pipe branch in aperture collects with water delivery general pipeline
It is logical, and water delivery general pipeline is directly connected to experimental trough again.
A kind of watering cycle control system applied to experimental trough according to the present utility model, which is characterized in that described
Electromagnetic flux converter there is RS485 communication interface, by being similarly the flow data collector network of RS485 communication to flow
Controller transmitted traffic signal, flow controller are connected to by the RS232 bus of its setting with monitoring computer data signal, and
The water delivery that flow controller is communicated by RS485 controls network and issues command signal to the frequency converter with RS485 communication interface.
Monitoring computer is connect with flow controller by RS232 bus, with the communications protocol of agreement transmission control command,
Data, flow controller are connect with several flowmeters by RS485 bus, flow data collector network are formed, with agreement
Communications protocol reads each flowmeter data on flows and status data；And flow controller and several frequency converters are total by RS485
Line connection, composition water delivery control network, send frequency conversion data with the communications protocol of agreement, read each frequency converter status data,
The corresponding immersible pump working flow of each pipeline is accurately controlled, reaches and accurately controls the mesh that steady pond exchanges water with experimental trough
's.
Above-mentioned design automatically controls the flow of experimental trough, and flow controller and frequency converter, flowmeter, immersible pump are connected
It is connected into negative feedback control form, guarantees that flume test flow discharges on demand, water can be kept up in time when trough inner water position increases, and be reduced
Shi Shuiliang can be discharged in time.
A kind of watering cycle control system applied to experimental trough according to the present utility model, which is characterized in that described
Delivery pipe branch be each provided with branch sluice valve, delivery pipe branch is opened or closed by branch sluice valve.
A kind of watering cycle control system applied to experimental trough according to the present utility model, which is characterized in that described
Flowmeter, electromagnetic flux converter, frequency converter and the particular number of immersible pump and the quantity of delivery pipe branch it is equal, that is, every
Delivery pipe branch is equipped with independent flowmeter, electromagnetic flux converter, frequency converter and immersible pump.
A kind of watering cycle control system applied to experimental trough according to the present utility model, which is characterized in that described
Experimental trough and the junction of communicating pipe pipeline on be provided with tail portion valve, by the tail portion valve open or close by
Experimental trough enters the water flow of communicating pipe.
A kind of watering cycle control system applied to experimental trough according to the present utility model, which is characterized in that described
One end of communicating pipe be connected to the bottom of experimental trough, and the other end of communicating pipe then with the connection that is opened up on steady pool wall of pool
The water flow of experimental trough is sent into steady pond by the connection nozzle by nozzle connection.
On the design as the connection nozzle of water inlet, aperture is preferably big, so that conveyance capacity is sufficiently strong, is convenient for steady water
Pond quickly receives the water body that experimental trough flows into time.
A kind of watering cycle control system applied to experimental trough of the utility model passes through water body stabilization and flow control
System combines, and achievees the purpose that pipeline and sink circulating water supply, and the watering cycle control system in the utility model is to stablize water
Premised on body, a kind of ad hoc intermediate buffering link for counting steady pond as experimental trough to pipeline water flow, this is in plane formula and vertical
In body formula watering cycle equipment all never use and design and the utility model in watering cycle control system can be suitably used for
Build the key point of random length sink.
The principle that water body is stablized in the steady pond is: steady pond operation lowest water level it is ensured that immersible pump sufficiently flooded and
Water-level fluctuation is little, guarantees that depth of the water submerging is stable and sucks without air when diving pump work, using immersible pump as experiment water
Execution equipment from slot to pipeline water flow when, the flow of immersible pump is just controllable and stablizes.Immersible pump is arranged in delivery pipe branch
Inside the delivery pipe branch at nozzle connecting with steady pond, the aperture of delivery pipe branch is smaller, delivery pipe branch summarize access aperture compared with
Big water delivery general pipeline, water delivery general pipeline are directly connected to height such as the bottoms of experimental trough again.Under above-mentioned arrangement condition, to each
It is to realize the flow control of entire circulating water supply that immersible pump, which carries out flow control,.In addition, by the way of pumping group control flow also
Outstanding advantages with dispersion failure influence less total flow when separate unit immersible pump breaks down, and the entirety of system operation can
It is more secure by property.
It is obtained using a kind of watering cycle control system applied to experimental trough of the utility model following beneficial to effect
Fruit:
1. a kind of watering cycle control system applied to experimental trough of the utility model, adds flow using steady pond
The process of control designs sink water supply circulatory system, provides blanket confession to build the experimental trough of different length
Water circulating technology scheme；
2. a kind of watering cycle control system applied to experimental trough of the utility model uses several immersible pumps
The raw stream confluence mode of pump group's formula of coordination operation, the steady flow and unsteady flow of generation have flow adjustment process is steady, range is wide,
Feature with high accuracy；
3. a kind of watering cycle control system applied to experimental trough of the utility model, flow control is used and is based on
After the distributed AC servo system system of communication, flow control and detection hardware device are distributed to in-site installation, the system failure is also divided therewith
It will not be directly coupled to after dispersion, single flow detection or control device fails on monitoring computer and cause the system failure,
The Reliability comparotive of system overall operation is high.
Detailed description of the invention
Fig. 1 is a kind of specific structure signal of watering cycle control system applied to experimental trough of the utility model
Figure；
Fig. 2 is a kind of specific knot of the cross section of watering cycle control system applied to experimental trough of the utility model
Structure schematic diagram；
Fig. 3 is a kind of watering cycle control group of watering cycle control system applied to experimental trough of the utility model
The concrete structure schematic diagram of part；
In figure: 1- experimental trough, the tail portion 1a- valve, the steady pond 2-, 3- communicating pipe, 3a- connection nozzle, 4- water delivery general pipeline,
A- watering cycle control assembly, A1- delivery pipe branch, A1a- branch sluice valve, A2- flowmeter, A3- electromagnetic flux converter, A4- stream
Data acquisition network, A5- flow controller are measured, A6- monitors computer, and A7- water delivery controls network, A8- frequency converter, A9- diving
Pump.
Specific embodiment
System is controlled to a kind of watering cycle applied to experimental trough of the utility model with reference to the accompanying drawings and examples
System is further described.
As shown in FIG. 1 to 3, a kind of watering cycle control system applied to experimental trough, including experimental trough 1 and steady
The one end in pond 2, experimental trough and steady pond is provided with and communicated with a connecting pipe 3, by the communicating pipe by the water in experimental trough
In streaming to steady pond；
The other end in steady pond 2 offers watering cycle control assembly A, is increased water body by the watering cycle control assembly
Experimental trough can be inputted by water delivery general pipeline 4 afterwards again, water body is passed through into experimental trough, communicating pipe, steady pond and water delivery general pipeline
Circulate to continuous effective；
It is specially a decanter type pond excavated on ground level in steady pond 2, and the bottom of pond height in the steady pond is than experiment
Low 1.0m~the 2.5m of slot bottom height of sink 1, and the pond heights of roofs in steady pond is then higher than peak level designed by experimental trough
0.2m~0.5m, and the volume in steady pond is the 50%~100% of experimental trough volume, the pool wall in steady pond offers nozzle,
The nozzle is connected to the watering cycle control assembly A of the communicating pipe of water inlet 3 and water outlet respectively, the quantity and pore size root of nozzle
It is determined according to maximum water supply.
By taking a more general standard-sized steady pond as an example, inside dimension is long 8.8m × wide 2.5m × depth 4m,
Total depth of water in the pond is 4m, wherein the depth of water of the ground level above section in steady pond is 1.8m, and below the ground level in steady pond
The partial depth of water is 2.2m, and reinforced-concrete is built, and bottom of pond and wall thickness are 40cm.
As shown in figure 3, watering cycle control assembly A include delivery pipe branch A1, flowmeter A2, electromagnetic flux converter A3,
Flow data collector network A 4, flow controller A5, monitoring computer A6, water delivery control network A 7, frequency converter A 8 and immersible pump
A9 composition, wherein delivery pipe branch shares 3~6 (usually 4), the 2 pond inner tube of one end pond Jun Yuwen of each delivery pipe branch
Road connection, and the other end of delivery pipe branch collect after be connected to water delivery general pipeline 4, flowmeter its be specially an electromagnetic flow transducer
Device, the flowmeter are mounted in delivery pipe branch, and flowmeter is connected to electromagnetic flux converter data-signal, Electromagnetic Flow conversion
Device is connected to by flow data collector network with flow controller data-signal, the flow controller and the monitoring that backstage is arranged in
Computer data signal connection, and the flow controller controls network and data of frequency converter signal communication, frequency converter by water delivery
Then connection controls the immersible pump inside the delivery pipe branch being arranged at the nozzle that delivery pipe branch is connect with steady pond, the immersible pump
Then to delivery pipe branch water delivery.
Electromagnetic flux converter A3 has RS485 communication interface, by the flow data collector net for being similarly RS485 communication
The RS232 bus and monitoring computer A6 that network A4 passes through its setting to flow controller A5 transmitted traffic signal, flow controller
Data-signal connection, and water delivery control network (A7) that flow controller is communicated by RS485 is to RS485 communication interface
Frequency converter A 8 issues command signal.
Delivery pipe branch A1 is each provided with branch sluice valve A1a, opens or closes delivery pipe branch by branch sluice valve.
Flowmeter A2, electromagnetic flux converter A3, the particular number of frequency converter A 8 and immersible pump A9 and delivery pipe branch A1
Quantity is equal (usually 4), that is, every delivery pipe branch is equipped with independent flowmeter, electromagnetic flux converter, frequency converter
And immersible pump.
It is provided with tail portion valve 1a on the pipeline of the junction of experimental trough 1 and communicating pipe 3, passes through opening for the tail portion valve
Open or close the water flow for entering communicating pipe by experimental trough.
As shown in Fig. 2, one end of communicating pipe 3 is connected to the bottom of experimental trough 1, and the other end of communicating pipe then with steady water
The water flow of experimental trough is sent into steady pond by the connection nozzle by the connection nozzle 3a connection opened up on 2 pool wall of pond.
Embodiment 1- cavity type promotees silt dike section flow characteristics physical model test:
Each discharge curve deviation of model within ± 2%, each flow velocity measuring point test period and prototype time deviation ±
In 0.5h, the flow rate process line morphology of test result and field data is almost the same, and statistical average velocity deviation is in ± 10%.
Illustrate required precision of the simulated flow flume test provided by the utility model to Tidal Simulation, is the reliable of model test results
Property provides guarantee.
Wusong embodiment 2- mouthful patterns of river mouth optimization physical model test (sediment moving incipient velocity test):
In verification test, each discharge curve deviation of model repeats the deviation of test in ± 4% within ± %2.It says
Bright sink water flow provided by the utility model meets Mobile bed experiment requirement, has established base for the successful development of bed-sit erosion and siltation experiment
Plinth.
A kind of watering cycle control system applied to experimental trough of the utility model, adds flow control using steady pond
The process of system designs sink water supply circulatory system, provides blanket water supply to build the experimental trough of different length
Circulating technology scheme；The utility model uses the raw stream confluence mode of pump group's formula of several immersible pump coordination operations, generation
Steady flow and unsteady flow have the characteristics that flow adjustment process is steady, range is wide, with high accuracy；The flow control of the utility model is adopted
With the distributed AC servo system system based on communication, after flow control is distributed to in-site installation with detection hardware device, the system failure
It is decentralized therewith, it will not be directly coupled to after single flow detection or control device fails on monitoring computer and cause system
The Reliability comparotive of failure, system overall operation is high.
A kind of watering cycle control system applied to experimental trough of the utility model, be it is a kind of be suitable for construction it is long,
Short sink, and high-low water level can be carried out, size flow velocity combines the watering cycle control system of water flow test entirely, be suitable for various realities
Test the physical experiments field of sink.
Claims (7)
1. a kind of watering cycle control system applied to experimental trough, including experimental trough (1) and steady pond (2), feature
It is:
One end of the experimental trough (1) and steady pond (2) is provided with and communicated with a connecting pipe (3), will be real by the communicating pipe
The water flow in sink is tested to send to steady pond；
The other end in the steady pond (2) offers watering cycle control assembly (A), will by the watering cycle control assembly
Input experimental trough again by water delivery general pipeline (4) after water body energization, by water body by experimental trough, communicating pipe, steady pond and
Circulate to water delivery general pipeline continuous effective；
The steady pond (2) its be specially a decanter type pond excavated on ground level, the bottom of pond height ratio in the steady pond
Low 1.0m~the 2.5m of slot bottom height of experimental trough (1), and the pond heights of roofs in steady pond is then than highest water designed by experimental trough
High 0.2m~the 0.5m in position, and the volume in steady pond is the 50%~100% of experimental trough volume, the pool wall in steady pond offers pipe
Mouthful, which is connected to the watering cycle control assembly (A) of the communicating pipe of water inlet (3) and water outlet respectively, the quantity of nozzle and hole
Diameter size is determined according to maximum water supply.
2. a kind of watering cycle control system applied to experimental trough as described in claim 1, which is characterized in that described
Watering cycle control assembly (A) includes that delivery pipe branch (A1), flowmeter (A2), electromagnetic flux converter (A3), data on flows are adopted
Collect network (A4), flow controller (A5), monitoring computer (A6), water delivery control network (A7), frequency converter (A8) and immersible pump
(A9) it forming, wherein delivery pipe branch shares 3~6, pipeline connection in one end pond Jun Yuwen (2) pond of each delivery pipe branch,
And the other end of delivery pipe branch is connected to after collecting with water delivery general pipeline (4), it is specially an electromagnetic flow transducer to flowmeter, the stream
Meter is mounted in delivery pipe branch, and flowmeter is connected to electromagnetic flux converter data-signal, which passes through
Flow data collector network is connected to flow controller data-signal, the flow controller and the monitoring computer that backstage is arranged in
Data-signal connection, and the flow controller controls network and data of frequency converter signal communication by water delivery, frequency converter then connects
The immersible pump inside the delivery pipe branch being arranged at the nozzle that delivery pipe branch is connect with steady pond is controlled, the immersible pump is then to defeated
Water branch pipe water delivery.
3. a kind of watering cycle control system applied to experimental trough as claimed in claim 2, which is characterized in that described
Electromagnetic flux converter (A3) has RS485 communication interface, by the flow data collector network (A4) for being similarly RS485 communication
The RS232 bus and monitoring computer (A6) for passing through its setting to flow controller (A5) transmitted traffic signal, flow controller
Data-signal connection, and water delivery control network (A7) that flow controller is communicated by RS485 is to RS485 communication interface
Frequency converter (A8) issues command signal.
4. a kind of watering cycle control system applied to experimental trough as claimed in claim 2, which is characterized in that described
Delivery pipe branch (A1) is each provided with branch sluice valve (A1a), opens or closes delivery pipe branch by branch sluice valve.
5. a kind of watering cycle control system applied to experimental trough as claimed in claim 2, which is characterized in that described
The particular number and delivery pipe branch (A1) of flowmeter (A2), electromagnetic flux converter (A3), frequency converter (A8) and immersible pump (A9)
Quantity it is equal, that is, every delivery pipe branch is equipped with independent flowmeter, electromagnetic flux converter, frequency converter and immersible pump.
6. a kind of watering cycle control system applied to experimental trough as described in claim 1, which is characterized in that described
It is provided with tail portion valve (1a) on the pipeline of the junction of experimental trough (1) and communicating pipe (3), passes through the unlatching of the tail portion valve
Or close the water flow for entering communicating pipe by experimental trough.
7. a kind of watering cycle control system applied to experimental trough as described in claim 1, which is characterized in that described
One end of communicating pipe (3) is connected to the bottom of experimental trough (1), and the other end of communicating pipe is then opened on steady pond (2) pool wall
If connection nozzle (3a) connection, the water flow of experimental trough is sent by steady pond by the connection nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821976875.5U CN209368767U (en) | 2018-11-28 | 2018-11-28 | A kind of watering cycle control system applied to experimental trough |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821976875.5U CN209368767U (en) | 2018-11-28 | 2018-11-28 | A kind of watering cycle control system applied to experimental trough |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209368767U true CN209368767U (en) | 2019-09-10 |
Family
ID=67834183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821976875.5U Expired - Fee Related CN209368767U (en) | 2018-11-28 | 2018-11-28 | A kind of watering cycle control system applied to experimental trough |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209368767U (en) |
-
2018
- 2018-11-28 CN CN201821976875.5U patent/CN209368767U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103485305B (en) | Experimental device for release accelerating research of oversaturated gas in under-dam watercourses | |
| CN111642449B (en) | Slope-variable water tank for testing swimming capacity of fishes | |
| CN111126847A (en) | Cascade reservoir short-term optimization scheduling method and system coupled with riverway water power process | |
| CN107424470A (en) | A kind of water supply network analogue simulation system | |
| CN105010095A (en) | Specific discharge type irrigation water metering and controlling device | |
| CN103412483B (en) | The model-free gradient optimizing control method and analog adopted noted by a kind of offshore platform | |
| CN209368767U (en) | A kind of watering cycle control system applied to experimental trough | |
| CN209854826U (en) | Water supply high-sand-content water taking device based on flow-induced vibration principle | |
| CN106871876A (en) | Towards the water regime monitoring and analysis system and its method of Tongjiang lake ecological water need | |
| CN206740577U (en) | Slurry density of desulfurizing absorption column monitoring system | |
| CN111005347B (en) | Multifunctional test system for optimizing design of water flow structure in front of water inlet of hydropower station | |
| CN109994021B (en) | Laminar flow physical simulation test water tank system capable of simulating background flow velocity | |
| CN112408524A (en) | High-load processing system, method, device and equipment for pipe network regulation and storage coupling water plant | |
| CN209102153U (en) | A kind of U-shaped canal airfoil type automatic measuring water installations | |
| CN202520290U (en) | Water injection regulation and optimization control system | |
| CN113309173B (en) | Water supply system optimization method and adjustment method for community water supply system | |
| CN111964870B (en) | Test platform for pump room flow channel simulation | |
| CN115126041A (en) | Intelligent water supply system and method | |
| CN213235027U (en) | Foam liquid adding control device for balance tank | |
| CN204851222U (en) | Gas drilling detritus returns row detection device | |
| CN113740204A (en) | Limestone slurry density measuring method, system and device | |
| CN113447304A (en) | Distributed underground tunnel fertilizer collection device | |
| CN209729212U (en) | The on-way resistance experiment instrument of multistable | |
| CN207701096U (en) | Pile foundation construction secondary pile hole cleaning sand filter under a kind of bridge water | |
| CN208201770U (en) | A kind of automatic silt for water conservancy projects in municipal works is led except structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190910 Termination date: 20201128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |