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Precipitation runoff measuring device

A measuring device and technology of precipitation runoff, applied in the field of farmland water conservancy, can solve the problems of difficult error control, large area and high cost, and achieve the effects of high measurement accuracy, small area and low cost

Inactive Publication Date: 2009-03-11
奕永庆
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned problems, the purpose is to provide a precipitation runoff measurement device in this field, so that it can solve the traditional "runoff field" measurement, which occupies a large area, high cost, difficult to control errors, and cannot perform automatic data measurement. Problems with observation and long-distance telemetry

Method used

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Embodiment Construction

[0010] The implementation mode takes the working principle description as an example.

[0011] (1) Rainfall and snowfall are accessed from the upper port 11 of the measuring cylinder 12 for surface runoff measurement, and the precipitation Q 降 Measured by automatic rain gauge 23. The surface runoff Q generated in the measuring cylinder 径 From the runoff communication pipe 8, it is sent into the water quantity counter 6, and after metering, it enters the runoff water bucket 4, and after accumulation, it is discharged out of the runoff well 3 by the micro water pump 5.

[0012] (2) Underground seepage measurement and measurement

[0013] The amount of seepage water that infiltrates into the ground Q 渗 It is sent to the water volume counter through the runoff communication pipe 13, and enters the seepage bucket 15 after metering, and is discharged outside the seepage bucket by another micro-water pump 5. Seepage bucket 15, undertakes seepage water volume, and volume is smalle...

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Abstract

The invention relates to a device and method to measure precipitation runoff in farm field water conservancy. The runoff well and seepage well are connected by runoff-seepage communicating pipe. A water counter is set on water-yielding port of communicating pipe. Runoff bucket is at the bottom of well. There is a micro-water pump in well. Water counter connects radio-transmitting set. The method is suitable for measurement of seepage discharge, crop requirement and water quality. Surface runoff observation is divided to runoff Q track, moisture-holding Q soil and seepage water Q seepage, that is: Q fall=Q track + Q soil + Q seepage. The formula of water capacity is: Q soil=Q fall - Q track - Q seepage. According to duty Q fill and moisture variety DeltaQ soil, crop water requirement (water consumption Q crop in a period) is achieved: Q crop= Q fall+ Q fill- Q track- Q seepage+ DeltaQ soil. The invention resolves the problem of large error and high cost by using runoff field to measure.

Description

technical field [0001] The invention belongs to the field of farmland water conservancy, and is a device for measuring the surface runoff water volume and seepage water volume produced by rainfall and snowfall. technical background [0002] At present, the traditional method of measuring runoff and seepage water is to use "runoff field" measurement, which occupies a large area, is expensive, and is difficult to control the measurement error. Chinese patent application number 200510200178.1, publication number CN1673712, discloses a "mobile simulated rainfall device". It is a simulated rainfall device. The advantage is that it is easy to move for field experiments with different slopes. The disadvantage is that the measurement accuracy is not high, and it lacks the means of automatic data observation and long-distance telemetry. Contents of the invention [0003] In order to overcome the above-mentioned problems, the purpose is to provide a precipitation runoff measurement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F13/00G01F22/00G08C17/00
Inventor 奕永庆
Owner 奕永庆
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