CN210570846U - Flow measuring device for water flow of open channel with trapezoidal flow cross section - Google Patents
Flow measuring device for water flow of open channel with trapezoidal flow cross section Download PDFInfo
- Publication number
- CN210570846U CN210570846U CN201921368749.6U CN201921368749U CN210570846U CN 210570846 U CN210570846 U CN 210570846U CN 201921368749 U CN201921368749 U CN 201921368749U CN 210570846 U CN210570846 U CN 210570846U
- Authority
- CN
- China
- Prior art keywords
- flow
- water level
- measuring device
- water
- rivers
- 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.)
- Active
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model provides a trapezoidal section open channel rivers flow measuring device that overflows forms the section between two curb plates, bottom plate and the cylinder pipeline and is trapezoidal rivers passageway, forms the critical flow state when rivers flow through rivers passageway, and it overflows the function that the flow only is the upper reaches water level to make flow measurement turn into the measurement to the upper reaches water level. The utility model discloses a measuring device is convenient for the industrial manufacturing, avoids the site operation precision to be difficult to the drawback of accuse, rates the flow through indoor hydraulics experiment, has avoided the difficulty of on-the-spot rate flow, and flow calculation is more accurate, and engineering construction speed is faster, and the investment is more economized, and engineering management is more convenient, therefore specially adapted final canal system point is many-sided wide, the condition that rural technical strength is weak to the automatic acquisition of the information of being convenient for is favorable to irrigation management informationization construction.
Description
Technical Field
The utility model relates to an agricultural irrigation engineering water surveying, environmental protection engineering survey water and information-based management technical field especially relate to a trapezoidal section open channel rivers flow measuring device that overflows.
Background
The water resource shortage in China, and the water conservation is a basic national policy in China. The agricultural water in China accounts for more than 60% of the total water, and the water saving is mainly applied to irrigation agriculture. The method is an important technical means for promoting agricultural irrigation water conservation, and the method solves the problem of accurate water measurement in agricultural irrigation engineering economically, scientifically and reasonably, and places great attention on the work. Meanwhile, the discharge amount of a large amount of sewage in industrial and agricultural production and urban life also needs to be accurately measured so as to meet the requirement of environmental protection work.
However, the existing water measuring equipment is mostly constructed by site construction, has high technical requirements, great construction difficulty, long construction period, high engineering cost and difficult measurement precision calibration, and is difficult to meet the requirements of vast rural areas.
On the basis of summarizing irrigation water measuring practices and theoretical research results at home and abroad, an economic, scientific, reasonable and unified solution and water measuring equipment are provided for measuring water of a final-stage canal system in an irrigation area in China, so that the defects that the existing water measuring equipment is not economical, not accurate, not practical, inconvenient to manage and the like are overcome, and the application has a wide application prospect.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an economy, accurate, the trapezoidal section open channel rivers flow measuring device that overflows that accords with rural reality, be convenient for use management.
The utility model provides a trapezoidal section open channel rivers flow measuring device that overflows, it includes two curb plates and bottom plate, and every curb plate slopes respectively to set up in the bottom plate both sides, the bottom plate middle part is equipped with a cylinder pipeline, and the pipe diameter of cylinder pipeline becomes certain proportion with the distance between two guide plate bottoms, form the rivers passageway between curb plate, bottom plate and the cylinder pipeline, form critical flow when making rivers flow through the rivers passageway.
On the basis of the above technical solution, preferably, a scale is arranged on one side of the side plate located on the upstream water flow, and is used for measuring the water depth of the upstream water flow.
On the basis of the above technical scheme, preferably, the water level measuring device further comprises a water level sensor and an information equipment control box, wherein the water level sensor is electrically connected with the information equipment control box, the water level sensor is arranged on the inner side of the cylindrical pipeline and used for measuring the upstream water level, and the water level sensor transmits the measured water level value to the information equipment control box.
The utility model discloses a trapezoidal section open channel rivers flow measurement device that overflows has following beneficial effect for prior art:
(1) a water flow channel with a trapezoidal section is formed between the two side plates, the bottom plate and the cylindrical pipeline, a critical flow state is formed when water flows through the water flow channel, and the flow rate of the water flow is only a function of the upstream water level, so that the flow measurement is converted into the measurement of the upstream water level, and the problem is greatly simplified;
(2) the distance between the bottoms of the two side plates and the pipe diameter of the cylindrical pipeline need to meet certain proportion requirements. If the diameter of the cylindrical pipeline is too small, critical flow cannot be generated; the diameter of the cylindrical pipeline is too large, so that although critical flow is generated, the flow capacity is unnecessarily reduced;
(3) the measuring device of the utility model is convenient for industrial manufacture, and avoids the defect that the precision of site construction is difficult to control; the flow is rated through an indoor hydraulics test, so that the difficulty of on-site flow rating is avoided, and the flow calculation is more accurate;
(4) the utility model discloses a measuring device is convenient for realize the industrial production, and the field installation is taken one's place, and the construction technical requirement easily masters, and construction cycle is short, engineering cost is lower, and measurement accuracy is rateed and is also changed to go on in the mill, therefore engineering construction speed is faster, and the investment is more economized, and engineering management is more convenient, the specially adapted final canal system point is many-sided wide, the weak condition of rural technical strength to the automatic acquisition of the information of being convenient for is favorable to irrigation management informationization construction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the utility model discloses a trapezoidal section open channel rivers flow measurement device's that overflows spatial structure sketch map.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a trapezoidal section open channel rivers flow measuring device that overflows, including two curb plates 1, bottom plate 2, cylinder pipeline 3, scale 4, level sensor 6 and information equipment control box 5.
A water flow channel with a trapezoidal section is formed among the two side plates 1, the bottom plate 2 and the cylindrical pipeline 3, and a critical flow state is formed when water flows through the water flow channel. The critical flow is an extremely important concept in open channel hydraulics, the shape of the flow cross section is definite, and the flow rate is only a function of the upstream water head under the critical flow state, so that the flow measurement is converted into the measurement of the upstream water head, and the problem is greatly simplified. This application is through constructing trapezoidal section and forming the flume in cylinder pipeline both sides that overflows, makes the crossing groove rivers that pass through the flume reach the critical current state to reach best measurement effect. The flow rate of the open channel can be obtained by measuring the water level at the upstream of the side plate 1.
In order to ensure the generation of critical flow, the distance between the bottoms of the two side plates 1 and the pipe diameter of the cylindrical pipe 3 meet a certain proportion requirement. If the pipe diameter of the cylindrical pipeline 3 is too small, critical flow cannot be generated; the cylindrical pipe 3 has an excessively large pipe diameter, and although critical flow occurs, the flow capacity is unnecessarily reduced.
When the measuring device is used, the measuring device can be manufactured in advance in a factory and then is installed in an open channel needing to measure water flow, and the water flow can be measured. The measuring device can avoid the defects of high construction technical requirement, high construction difficulty, long construction period, high construction cost and difficulty in controlling construction precision in site construction.
In practical application, hydraulic tests are carried out on various types of measuring equipment in a laboratory in advance, so that a correction coefficient of calculated flow and actual flow is determined, and a water level-flow relation in practical application is determined according to the correction coefficient. The flow is calibrated through an indoor hydraulic test, the difficulty of calibrating the flow on site is avoided, the flow calculation is more accurate, the engineering construction speed is higher, the investment is more saved, the engineering management is more convenient, and the method is particularly suitable for measuring the water flow under the conditions that the final-stage channel system has multiple points and is wide and the rural technical strength is weak.
In order to measure the water depth of the side plate 1 in the upstream water flow, a scale 4 is further arranged on one side of the side plate 1 in the upstream water flow.
Still be equipped with level sensor 6 and information equipment control box 5 in the reality, level sensor 6 locates the inboard of cylindrical pipe 3 for measure the water level between the curb plate 1, through the more convenient measurement water level of level sensor 6, and send information equipment control box 5 to, and need not the artifical scale that reads, information equipment control box 5 is connected with the internet in the practical application, accessible network sends water level and flow information to the customer end, and does not need personnel's scene to look over, the information-based management of being convenient for.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a trapezoidal section open channel rivers flow measuring device that overflows, its includes two curb plates (1) and bottom plate (2), its characterized in that: every curb plate (1) slope respectively sets up in bottom plate (2) both sides, bottom plate (2) middle part is equipped with a cylinder pipeline (3), and the pipe diameter of cylinder pipeline (3) and the distance between two curb plate (1) bottoms become certain proportion, form rivers passageway between curb plate (1), bottom plate (2) and the cylinder pipeline (3), form critical flow when making rivers flow through rivers passageway.
2. The trapezoidal flow cross section open channel water flow measuring device of claim 1, characterized in that: one side of the side plate (1) positioned on the upstream water flow is provided with a scale (4) for measuring the water depth of the upstream water flow.
3. The trapezoidal flow cross section open channel water flow measuring device of claim 1, characterized in that: the water level measuring device is characterized by further comprising a water level sensor (6) and an information equipment control box (5), wherein the water level sensor (6) is electrically connected with the information equipment control box (5), the water level sensor (6) is arranged on the inner side of the cylindrical pipeline (3) and used for measuring the water level of the upstream, and the water level sensor (6) transmits the measured water level value to the information equipment control box (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921368749.6U CN210570846U (en) | 2019-08-21 | 2019-08-21 | Flow measuring device for water flow of open channel with trapezoidal flow cross section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921368749.6U CN210570846U (en) | 2019-08-21 | 2019-08-21 | Flow measuring device for water flow of open channel with trapezoidal flow cross section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210570846U true CN210570846U (en) | 2020-05-19 |
Family
ID=70641929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921368749.6U Active CN210570846U (en) | 2019-08-21 | 2019-08-21 | Flow measuring device for water flow of open channel with trapezoidal flow cross section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210570846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567532A (en) * | 2019-08-21 | 2019-12-13 | 武汉联宇技术股份有限公司 | Flow measuring device for water flow of open channel with trapezoidal flow cross section |
-
2019
- 2019-08-21 CN CN201921368749.6U patent/CN210570846U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567532A (en) * | 2019-08-21 | 2019-12-13 | 武汉联宇技术股份有限公司 | Flow measuring device for water flow of open channel with trapezoidal flow cross section |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106382471A (en) | Municipal drainage pipe network diagnostic assessment method giving consideration to key node | |
| CN103423598B (en) | A kind of seepage determination methods based on water supply network flow Real-Time Monitoring | |
| CN113701060B (en) | Intelligent diagnosis method for urban drainage pipe network based on drainage model | |
| CN101807045B (en) | Data-based urban sewage pumping station system modeling method | |
| CN113505471B (en) | River section pollutant concentration prediction calculation method | |
| CN102426442B (en) | Water resource real-time monitoring and managing method and system of complicated water system | |
| CN110838079A (en) | Intelligent city flood control and drainage remote monitoring system and method | |
| CN113011903A (en) | Water pollution accurate tracing method based on GIS and hydraulic model | |
| CN112750284A (en) | Pipe network leakage monitoring system based on independent metering partitions | |
| CN113405026B (en) | Newly-added leakage judgment and leakage rate estimation method suitable for water supply pipe network in underdeveloped area | |
| CN104462774A (en) | Urban road and low-lying area water accumulation forecasting method based on water tank model | |
| CN103591996B (en) | A kind of separate system Storm Sewer Network waterlogging early warning and emergency response facility and method | |
| CN210570846U (en) | Flow measuring device for water flow of open channel with trapezoidal flow cross section | |
| CN210198452U (en) | Rectangular cross section open channel water flow measuring device that overflows | |
| CN210221149U (en) | Flow measuring device for water flow of open channel with circular flow cross section | |
| CN112459203A (en) | Wisdom inspection shaft | |
| CN110567532A (en) | Flow measuring device for water flow of open channel with trapezoidal flow cross section | |
| CN110567531A (en) | Rectangular cross section open channel water flow measuring device that overflows | |
| CN209102153U (en) | A kind of U-shaped canal airfoil type automatic measuring water installations | |
| CN110567533A (en) | Flow measuring device for water flow of open channel with circular flow cross section | |
| CN115493659A (en) | Hydraulic engineering safety monitoring method and system | |
| CN212110134U (en) | Measurement system for flow is calculated based on local head loss | |
| CN213448751U (en) | Urban drainage system service detection device | |
| CN104573872B (en) | The energy-saving power station addressing method of industry park residential quarter power network | |
| CN210798938U (en) | Leakage monitoring device for oilfield water injection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |