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Automatic sampling system for storm runoff in small watershed

An automatic collection, small watershed technology, applied in sampling devices and other directions, can solve the problems of automatic continuous monitoring of the dynamic process of erosion in small watersheds, and segmented treatment of runoff in small watersheds, which is difficult to achieve. Simple structure, convenient management, suitable for effect on collection

Inactive Publication Date: 2006-06-21
INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

At present, the methods and systems used in runoff sampling are mainly barrel measuring method and porous diversion system, which belong to lumped measurement. The equipment used in this collection method is simple, the operation and management are convenient, and it can complete the determination of the total amount of erosion in a small watershed during a rainfall process; However, with the continuous development of eco-environmental science and watershed hydrology, distributed monitoring and management of runoff and erosion processes in small watersheds are required. Due to the current traditional collection methods, it is not easy to segment runoff in small watersheds, especially In the case of heavy rainfall, it is difficult to automatically and continuously monitor the dynamic process of small watershed erosion, and the systematic errors caused by traditional runoff sampling methods can no longer meet the ever-changing scientific needs

Method used

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  • Automatic sampling system for storm runoff in small watershed
  • Automatic sampling system for storm runoff in small watershed
  • Automatic sampling system for storm runoff in small watershed

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Embodiment Construction

[0019] figure 1 As shown, the small watershed runoff automatic collection system for small watersheds of the present invention measures water weirs on small watersheds with a set area, and sets observation wells, weir plates and water diversion pipes at the ends, and pumping, diversion and diversion pipes are arranged at corresponding positions below the water diversion pipes. The collecting mechanism consists of three parts, wherein the pumping mechanism is composed of a water pump 17 set in the water measuring weir, a float valve 15 and a travel switch 20 set in the observation well 23, and the water pump stops pumping water under two conditions. 1. The water measuring weir The water level in the water drops to the point where the pull rod 16 of the float valve cannot be in contact with the travel switch 20; 2. The collection mechanism completes a collection cycle, that is, the water diversion control disc rotates one revolution.

[0020] figure 1 , 2 , 3, 4, and 5, the sh...

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Abstract

The invention discloses a mini-flow or storm radial flow self-gathering system to gather and gauge random time step flow sample at direct pattern, which comprises the following parts: pumping, dividing and gathering structures, wherein the pumping structure contains pump in the dam detecting well of mini-flow outlet and floating control stroke switch; the diving structure contains motor, stroke switch, time-delay relay J, diving control disk controlled by torsion bar switch on the lower frame; the gathering structure contains dividing disk on the frame, which contains dividing groove; each opening of dividing groove connects the water gathering cup under the groove. The invention simplifies the structure and saves the power and cost, which is more fitful for field sample test and data gathering.

Description

technical field [0001] The invention relates to a small watershed runoff automatic collection system for small watershed runoff matched with a mountainous small watershed runoff collection system, which is mainly used in the test of soil erosion and water and soil loss under strong natural rainfall conditions, and belongs to the technical field of small water conservancy engineering equipment for water and soil conservation . Background technique [0002] The runoff sediment content in soil erosion is one of the important parameters to measure soil erosion, and the determination of the sediment content in water flow is of great significance to soil erosion research and soil erosion control. The sediment concentration measurement method needs to sample the runoff before the measurement, and the quality of the sampling directly affects the accuracy of the measurement results. At present, the methods and systems used in runoff sampling are mainly barrel measuring method and po...

Claims

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Application Information

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IPC IPC(8): G01N1/14G01N1/10
Inventor 曹建生张万军
Owner INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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