Anti-clogging design method for emitter used for eliminating suspended particle aggregation position in runner

A technology of suspended particles and design methods, applied in the direction of instruments, calculations, special data processing applications, etc., can solve problems such as changing the hydraulic performance of emitters, and achieve the effect of optimal flow channel structure
CN101667218AInactive Publication Date: 2010-03-10北京市水利科学研究所
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京市水利科学研究所
Publication Date
2010-03-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an anti-clogging design method for an emitter used for eliminating the suspended particle aggregation position in a runner, which comprises the following steps: constructing ageometrical structure model of the internal runner of the drip irrigation emitter, and determining the boundary conditions of an inlet and an outlet of the runner; adopting a computational fluid dynamics (CFD) solid-liquid two-phase flow model to carry out the numerical simulation on the runner model according to the boundary conditions; extracting the cross section with the percentage of the content of suspended particles in the runner, and modifying the runner model according to the minimum concentration curve of the suspended particles; and repeating the steps, and filtering out the runnershape with the maximum concentration of the suspended particles which is nearest to the concentration of the suspended particles at the inlet. The anti-clogging design method firstly takes into full consideration of the hydraulic performance, the anti-clogging performance and the runner processing of the drip irrigation emitter and can form the better runner structural form.
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Description

technical field

[0001] The invention relates to an agricultural drip irrigation technology, in particular to an anti-clogging design method of an irrigation device for eliminating the accumulation position of suspended particles in a flow channel. Background technique

[0002] Drip irrigation irrigator is one of the most important components in the drip irrigation system. The drip irrigation irrigator is called the heart of the drip irrigation system. The water flows steadily and evenly into the soil. Its hydraulic performance and anti-clogging performance are the decisive factors for the investment, operating cost and operating life of the drip irrigation system. The quality of the drip irrigation emitter directly affects the operational reliability, cost and service life of the entire drip irrigation system. The problem of clogging of drip irrigation emitters has always been the focus of research by scholars at home and abroad, and it is also a problem that has plagued re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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