Comprehensive evaluation method and test system for clogging characteristics of emitters of drip irrigation system

Abstract

The invention relates to a comprehensive evaluation method and a test system for the clogging characteristics of emitters of a drip irrigation system. The method comprises the following steps of: 1) building a set of test system for the clogging characteristics of the emitters; 2) numbering all the emitters in each drip irritation pipe according to a water flow direction, and determining the rated flow of the emitters at the temperature of below 20 DEG C; 3) measuring the flow of any emitter in a certain drip irritation pipe at certain run time and the water temperature of the drip irrigation system at this time; 4) solving the corrected flow under the influence of the clogging on the flow of the emitters; 5) counting the relative flow of the emitters, the uniformity of the emitters, the flow deviation coefficients of the emitters and the distribution of clogging rates of the emitters, and comprehensively evaluating the clogging condition of the emitters; 6) making a line graph or a histogram that the flow of the emitters changes with time according to various evaluation index values and the distribution of the clogging rates of the emitters so as to intuitively monitor the clogging behavior of the emitters; and 7) according to the comprehensive evaluation of the clogging characteristics of emitters of different drip irrigation systems, researching the clogging mechanism of the emitters, and establishing a scheme for solving the clogging of the emitters.

Description

technical field [0001] The invention relates to an emitter for a drip irrigation system, in particular to a comprehensive evaluation method for clogging characteristics and anti-clogging ability of an emitter for a drip irrigation system and a test system that can be used in a field environment to test an emitter. Background technique [0002] The emitter is one of the most critical components of the drip irrigation system, and the emitter flow channel is narrow (generally only 0.5-1.2mm), suspended solids, dissolved salts, chemical precipitation, organic matter, microorganisms and other impurities in the water can easily cause the emitter to flow. Blockage of the channel and outlet orifice. Although since the first International Drip Irrigation Conference was held in Israel in 1971, a large number of scientific research scholars have tried to solve the problem of drip irrigation system clogging from various aspects such as rational configuration of filtration equipment, per...

AI Technical Summary

Problems solved by technology

However, there are many influencing factors in the field test and the operating conditions of the system are complex, so it is difficult to study the clogging rule of the emitter and the test of the emitter flow rate under different working conditions.

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