Open channel automatic flow measurement device and flow measurement method based on measurement of flow cross section area
A technology of flow cross section and flow measuring device, which is applied in the direction of measuring device, measuring flow/mass flow, liquid/fluid solid measurement, etc. It can solve the problems of high maintenance cost, high instrument price, and changing accuracy, and achieve the goal of installation Low cost, low power consumption, and simple structure
Active Publication Date: 2022-04-08
水利部水土保持监测中心
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The flow velocity area method that has been used in my country requires manual operation to install the triangular weir baffle at the water outlet section. When measuring flow, it is necessary to replace the triangular weir baffle with different specifications according to different flow rates, and it must be ensured that its contact surface with the channel is not the same. Leakage, the installation process is relatively complicated, when the flow exceeds a certain limit, the triangular weir will lose its corresponding function, although the measurement accuracy is very high, it cannot meet the requirements of automatic measurement
The weir-trough method is more accurate and easier to realize automatic measurement, but it needs to transform the existing open channel, which requires a large investment. In addition, the accuracy of this method is easily affected by the change of the open channel
However, relying on imported instruments (such as Doppler acoustic flowmeters, time difference acoustic flowmeters, electromagnetic flowmeters, etc.) need
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] The present invention is based on the open channel automatic flow measurement device for measuring the cross-sectional area of the flow, and its structure is as follows figure 1 As shown, the main flow plate 3 is included, the two ends of the main flow plate 3 are slidably connected with the auxiliary flow plate 10, the upper ends of the main flow plate 3 are installed with infrared ranging sensors 5, and the middle sides of the main flow plate 3 are A water level detection device 1 and a flow velocity measurement device 6 are respectively installed on the wall, and the infrared distance measuring sensor 5, the water level detection device 1 and the flow velocity measurement device 6 are jointly connected with a controller 7 through wires.
[0030] There are grooves 3-1 on the bottom surface of both ends of the main flow plate 3, and...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an open channel automatic flow measuring device based on the measurement of the cross-sectional area of the flow. The distance sensor, the water level detection device and the flow velocity measurement device are respectively installed on the two side walls in the middle of the main flow measuring plate, and the infrared distance measuring sensor, the water level detection device and the flow velocity measurement device are connected to the controller through wires. The open channel automatic flow measurement device based on the measurement of the cross-sectional area of the flow of the present invention has a simple structure and can realize automatic data measurement after installation. The invention also discloses an automatic flow measurement method in an open channel based on the measurement of the cross-sectional area of the flow.
Description
technical field [0001] The invention belongs to the technical field of open channel flow measuring devices, and relates to an open channel automatic flow measuring device based on the measurement of the cross-sectional area of the flow. Background technique [0002] The shortage of water resources has become an important factor restricting the development of agriculture in my country. Water conservation in irrigation areas is an effective means to curb the development of water shortages. Open channel flow measurement is an effective measure to save water in irrigation areas and improve irrigation quality and irrigation efficiency. There are more or less deficiencies in the stream method. [0003] The flow velocity area method that has been used in my country requires manual operation to install the triangular weir baffle at the water outlet section. When measuring flow, it is necessary to replace the triangular weir baffle with different specifications according to differen...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/002G01F1/52
CPCG01F1/002G01F1/52
Inventor 李浩高进李斌斌乔殿新柳庆斌赵院戴宁李琦
Owner 水利部水土保持监测中心