An operation mode of open water channel system with coupled water level difference as the controlled quantity
A technology of operation mode and controlled quantity, applied in artificial waterways, water conservancy projects, water conservancy engineering equipment, etc., can solve the problems of drastic changes in water level and accumulation in the last section of the canal, and achieve the effect of avoiding overflowing or bottoming out
Active Publication Date: 2020-02-11
WUHAN UNIV
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The disadvantages of the two operation modes are: the channel under the downstream constant water level operation mode transmits the contradiction between water diversion and water intake flow to the upstream canal section, and finally accumulates in the first section of the canal section; the upstream channel under the constant water level operation mode channel, which transmits the contradiction between water diversion and water intake flow to the downstream canal section, and finally accumulates in the last section of the canal section
Therefore, there is a section of the canal where the water level changes most drastically, and the risk of flooding and bottom exposure is also the greatest
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
[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0023] Such as figure 2 As shown: the canal system includes a plurality of canal sections connected in sequence and with different elevations, the gates of the control gates are set between adjacent canal sections, and water level sensors are installed in each canal section to measure the depth of its water level; the canal system There is a control gate in the upstream called the canal head gate, and a control gate in the downstream of the canal system called the canal tail gate. There are several control gates arranged in the canal system; the canal head gate and the canal tail gate are only operated once at the beginning of a water intake plan , do not operate during the water intake process, the control gate in the canal system operates according to the specified time interval to adjust the...
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 operation mode of a water delivery open channel system using a coupling water level difference as controlled volume. When the water delivery open channel system is operated,the condition that the water inflow is unequal to the water withdrawal frequently occurs, the water volume in channels can change due to unequal water inflow and water withdrawal in the channels, andthe water levels can rise or lower. According to the operation mode, the water level errors to upstream and downstream control points of a check gate are measured at the movement moment of each gate,and the target opening degree of the check gate at the next moment is calculated according to the difference between the upstream and downstream water level errors, so that the water levels in the adjacent channels rise or lower at the same time. According to the operation mode, the relatively stable water level of of the multiple channels is kept within a period of water withdrawal schedule time, so that overtopping or appearance of grounding of one channel due to large change of the water level in the channel is effectively avoided.
Description
technical field [0001] The invention belongs to the field of channel dispatching, and relates to an operation mode of an open water delivery channel, in particular to an operation mode of an open water delivery channel system with coupling water level difference as a control quantity. Background technique [0002] With the development of economy and society, the contradiction between supply and demand of water resources has become increasingly prominent. In order to adjust the spatial distribution of water resources, it is necessary to build corresponding water delivery systems. As the main water delivery method, the open channel has the advantages of economy, high efficiency, and convenient management. Its main function is to transport water from the water source to the water distribution outlet along the way and downstream water users. Due to the long distance of the open channel water delivery system and the slow propagation speed of water waves in the open channel, for g...
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): E02B1/00E02B5/00G06Q50/06
CPCE02B1/00E02B5/00G06Q50/06
Inventor 管光华毛中豪冯晓波叶雯雯钟乐廖文俊钟锞苏海旺肖昌诚王静茹
Owner WUHAN UNIV