Assembly type arcuated water measuring flume
A measuring water tank and assembly type technology, which is applied in the field of assembled curved water measuring tanks, can solve the problems of difficult on-site construction, high application backwater, large head loss, etc., and achieves simple construction, high submergence, and small head loss. Effect
Inactive Publication Date: 2009-01-28
WATER CONSERVANCY & HYDROPOWER SCI RES INST OF LIAONING PROVINCE
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Problems solved by technology
[0005] The main problems existing in the application of existing irrigation area water measuring equipment in plain irrigation areas are: low submergence degree, large head loss, high backwater application, and application on large trapezoidal canals. According to the prefabricated structure design, there are complex structures and on-site construction. difficult problem
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[0022] An assembled arc-shaped measuring tank includes a channel 1, two round pipes 3, and four wing walls 2. The channel 1 is a trapezoidal channel, the bottom surface of the trapezoidal channel is provided with two positioning holes for the circular tubes 3, and the slopes on both sides of the trapezoidal channel are respectively provided with positioning grooves for the wing walls 2. The round pipe 3 adopts a round pipe with a diameter of 60 cm, and the ratio of the bottom width to the channel is 1 / 4, that is, the bottom width of the channel 1 is 240 cm. The lower ends of the two circular tubes 3 are respectively loaded into the positioning holes of the two circular tubes 3, and the lower ends thereof are fixed to the bottom surface of the channel 1. The four wing walls 2 are respectively loaded into the positioning grooves of the wing walls, and the wing walls 2 are connected with the round pipe 3, and the included angle α with the center line is 45 degrees. The wing wall...
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The invention relates to an assembly type arc-shaped measuring flume which comprises a channel, two round tubes and four wing walls. The channel is trapezoid channel, the bottom of which is provided with positioning holes of the round tubes; two side slopes of the trapezoid channel are respectively provided with positioning grooves of the wing walls; the lower ends of the two round tubes are respectively embedded into the positioning holes of the two round tubes and are fixed with the bottom of the channel; four wing walls are respectively embedded into the positioning grooves of the wing walls and are connected with the round tubes and the channel; therefore, a funnel mouth is formed by utilizing part arc of the two round tubes and four wing walls to enclose the contraction sections of the channel; the width of the funnel mouth is the distance between the two round tubes; therefore, the assembly type arc-shaped measuring flume is formed. The measuring flume utilizes part arc of the round tubes to form the contraction sections of the channel and the flow measuring range thereof is that: the height of backwater is 10cm to 20cm and the submerging degree is up to 0.85, which all meet the requirements of water measuring equipment of irrigation areas. The measuring flume has the advantages of simple structure, little back water, high submerging degree, little tap loss, low construction cost, simple construction and the like, thus having relatively high promotion and application value.
Description
technical field [0001] The invention relates to a water volume measuring device for an open channel in an irrigation area, in particular to an assembled arc-shaped water measuring tank. Background technique [0002] Insufficient irrigation water resources have become an important factor restricting agricultural development. Water-saving agriculture is an inevitable choice for future agricultural development. Its focus is to reduce water waste and improve water use efficiency. The water measurement in the irrigation area can timely and accurately measure the water source into the canal system and the water allocated to the channels at all levels and the water use units. Based on this, the water loss of the channels at all levels can be analyzed, which provides support for the continued construction of the irrigation area and water-saving transformation. The basis can accurately evaluate the water-saving effect of various measures, and greatly promote the promotion of water-sa...
Claims
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IPC IPC(8): G01F15/00G01F1/704
Inventor 于国丰谭国栋孟维忠张恩禄刘建军王海兵
Owner WATER CONSERVANCY & HYDROPOWER SCI RES INST OF LIAONING PROVINCE