Calculation Method of Working Parameters and Irrigation Matching Method of Venturi Aeration Device
A gas filling device and technology of working parameters, applied in the field of irrigation, can solve problems such as pressure mismatch, failure to achieve gas mixing effect, and affect normal liquid transportation, etc., to reduce costs and installation costs, improve crop yield and quality, Reduce hard-to-promote effects
Active Publication Date: 2021-06-29
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI +1
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Problems solved by technology
[0005] When the Venturi tube is used as an air-filling device when inputting liquid, it no longer transmits a single medium, and it needs to mix liquid and gas. If the venturi is selected based on the current working parameters of the Venturi tube when transporting liquid, And it may not be able to match the water pressure and the working pressure of the drip irrigation system, so that when the drip irrigation belt is used as an aeration device, it will not only fail to achieve the gas mixing effect, but will affect the normal delivery of the liquid. If the pressure does not match, it may also Affect the service life of the drip irrigation belt, and even the possibility of pipe burst
Method used
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[0030] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0031] refer to figure 1 , figure 1 The flow chart of the working parameter calculation method of the shown Venturi gas filling device; as figure 1 As shown, the method includes steps S1 to S6.
[0032] In step S1, the Venturi gas filling device is installed on the test platform, and a data set of multiple inlet pressures of the Venturi gas filling device is stored; the preferred data set is stored with 0.10, 0.15, 0.20, ...
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The invention discloses a working parameter calculation method and an irrigation matching method of a Venturi gas filling device, wherein the working parameter calculation method includes selecting the inlet pressure that has not been traversed in the data set, and collecting the inlet pressure when the Venturi gas filling device is not inhaling. , test the outlet pressure, working flow and multiple gas flows corresponding to the platform; judge whether the inlet pressure in the data set has been traversed, if so, go to the next step, otherwise return to the previous step; according to the outlet pressure, construct the pressure of the Venturi filling device Regression curve, based on the pressure regression curve and the working pressure of the drip irrigation belt to determine the working pressure of the Venturi gas filling device; according to the working flow, construct the flow regression curve of the Venturi gas filling device, and based on the flow regression curve and the working pressure of the Venturi gas filling device Determine the working flow of the Venturi gas filling device; according to the gas flow at all inlet pressures, use the weighted average to obtain the average suction volume of the Venturi gas filling device at each inlet pressure.
Description
technical field [0001] The invention relates to the field of irrigation, in particular to a method for calculating working parameters of a Venturi gas filling device and an irrigation matching method. Background technique [0002] In order to meet the normal growth of crops, it is necessary to ensure that there is sufficient oxygen in the soil to satisfy the respiration of the roots of the crops, and to ensure the energy required for the migration of minerals in the roots of the plants and the absorption of nutrients and water; Oxygen content can make crops grow significantly and increase yield significantly; it also reduces the occurrence of crop diseases and insect pests and improves crop yield and quality. [0003] In order to increase the oxygen content in the soil, the utility model patent (201120493654.4) provides a micro-nano gas device for underground drip irrigation, which can improve the dissolved oxygen and the effect of aeration when used for irrigation, but beca...
Claims
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IPC IPC(8): G01F1/44A01G7/00B01F5/04B01F3/04
CPCG01F1/44A01G7/00B01F23/232B01F23/237611B01F25/31232
Inventor 王建东王海涛杨彬龙晓旭王绍新莫彦
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI