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Metering device and measuring method capable of accurately measuring irrigation water quantity in field

A technology of precise measurement and metering device, applied in the direction of detecting fluid flow by measuring differential pressure, volume/mass flow generated by mechanical effect, etc. Effect

Inactive Publication Date: 2014-04-30
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] With the advancement of science and technology, ultrasonic and infrared technologies are also used to measure the flow of canal systems, but the cost of these two technologies is relatively high, and they also require relatively standard channel sections, which are limited in practical applications

Method used

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  • Metering device and measuring method capable of accurately measuring irrigation water quantity in field
  • Metering device and measuring method capable of accurately measuring irrigation water quantity in field
  • Metering device and measuring method capable of accurately measuring irrigation water quantity in field

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Experimental program
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Effect test

Embodiment 1

[0043] Such as image 3 As shown, the metering device for accurately measuring the amount of irrigation water in the field of the present invention includes a "several"-shaped siphon 1, and the two ends of the siphon 1 respectively have a water inlet 2 and a water outlet 3 for water diversion and drainage. The middle part of the siphon pipe 1 has an upwardly protruding top, the height of the top is higher than the difference between the water level of the channel and the height of the canal dam, and a pressure measuring hole 4 is arranged on the top of the siphon pipe 1, and the high-precision pressure sensor 6 is directly connected to the measuring chamber. On the pressure hole 4. The high-precision pressure sensor 6 is connected with a micro-processing chip 7. The micro-processing chip 7 converts the current signal of the high-precision pressure sensor 6 into a digital signal and calculates the real-time flow value through the pre-written program. The microprocessing chip 7...

Embodiment 2

[0045] Such as Figure 4 As shown, the pressure measuring hole 4 is connected to a pressure transmission coil 5, and the other end of the pressure transmission coil 5 is connected to a high-precision pressure sensor 6, and the pressure transmission coil 5 transmits the pressure value of the pressure measurement hole 4 to the high-precision pressure sensor 6 , to ensure real-time monitoring of the top pressure of the siphon 1.

[0046] Figure 5 It is the working schematic diagram of the metering device for accurately measuring the irrigation water in the field of the present invention:

[0047] In the farmland ground irrigation system, select a plurality of siphon pipes 1 of the same size, arrange them side by side in the hair canal, and choose one of Embodiment 1 or 2, and use the water delivery and distribution and irrigation water metering of the hair canal to the field , at this time, the flow of irrigation from the canal to the field is n×Q, n is the number of all sipho...

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Abstract

The invention relates to an accurate measuring device, in particular to a metering device capable of measuring the irrigation water quantity in a field in real time when water is delivered to the field through the tail end of a canal system. The metering device capable of accurately measuring the irrigation water quantity in the field comprises a siphon pipe (1) which is in the shape like a Chinese character 'ji'. The middle portion of the siphon pipe (1) is provided with a top protruding upwards. The two ends of the siphon pipe (1) are provided with a water inlet (2) and a water outlet (3) respectively. A pressure hole (4) is formed in the top of the siphon pipe (1) and is connected with a high-precision pressure sensor (6). The high-precision pressure sensor (6) is connected with a micro-processing chip (7). The micro-processing chip (7) is connected with a liquid crystal display (8). The metering device is wide in application range, can be applied to all surface irrigation systems, is capable of being applied to water delivering to the field through the tail end of the canal system and can also be used for measuring water resources in the water delivering process.

Description

technical field [0001] The invention relates to an accurate measurement device, in particular to a metering device for real-time measurement of the field irrigation water volume when the end of the canal system distributes water to the field. Background technique [0002] my country is a country that is extremely short of water resources, and agricultural irrigation is a major user of water resources, with an average annual consumption of 360 billion m 3 , mainly ground irrigation, and the irrigation water use efficiency is only about 0.50. An important reason for the low utilization of farmland irrigation water is the lack of effective irrigation tools and metering tools in the process of water distribution from the canals to the fields. Therefore, it is imperative to develop an effective field water distribution and measurement tool. [0003] In a typical irrigation area dominated by surface irrigation, when the canal delivers water to the fields for irrigation, it is of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/34
Inventor 黄权中黄冠华徐旭熊云武江政潘维艳普薇茹
Owner CHINA AGRI UNIV
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