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Novel low-pressure drip irrigation system

A low-pressure, dripper technology, applied in the field of agricultural irrigation, can solve problems such as expensive

Inactive Publication Date: 2004-03-17
YANGLING ENG TECH RES CENT STATE WATER SAVING IRRIGATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Expensive is the most important problem restricting the development of drip irrigation area

Method used

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  • Novel low-pressure drip irrigation system
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Examples

Experimental program
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Effect test

specific Embodiment

[0036] (1) Drip irrigation under plastic film in Xinjiang

[0037] The field width is 200m, the branch pipe length is 100m, and the capillary pipe is arranged in two directions; the terrain is 1‰ slope along the capillary pipe, and the branch pipe is horizontal. The design flow rate of the dripper is 1.6L / h, the flow index x=0.5, the distance between the drippers is 0.3m, and the distance between the capillaries is 0.9m.

[0038] Conventional system scheme: Permissible flow deviation rate according to specification requirements [q v ]=0.20; choose dripper h d = 8.0m, the distance between the branch pipes is 140m, and the area of ​​each irrigation area is 21 mu; the pressure rating of the drip irrigation belt and the branch pipe is 0.15MPa (currently the minimum pressure level of the branch pipe is 0.25MPa), the wall thickness of the drip irrigation belt is 0.2mm, and the weight per meter is 10g; the branch pipe φ110 The wall thickness is 3.2mm, and the meter weighs 1.08kg. ...

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Abstract

The low pressure irrigation system of the present invention is similar to conventional one in that it consists of pressurized water source, initial key part and water conveying and distributing network. It features the landform adaptability matching the field height difference, designed dripper pressure not higher than 0.04 MPa, pressure grade of branch pipe and hair canal not higher than 0.06 MPa, constant pressure unit in the inlet of the branch pipe to make the downstream lower pressure area and make the branch pipe and the hair canal obtain stable water head. Compared with conventional dripping irradiation system, the present invention has 72.7 % lowered plastic consumption, 87.5 % lowered branch pipe inlet water head and over 30 % lowered system running power consumption.

Description

1. Technical field [0001] The invention belongs to the technical field of agricultural irrigation and relates to drip irrigation technology, in particular to a new low-pressure drip irrigation system. 2. Background technology [0002] Drip irrigation is one of the irrigation technologies. Its practical technology and equipment came out in the late 1960s. After nearly half a century of production and application, its advantages have been accepted by the world: that is, it can best provide crops with a suitable growth environment and The most water saving. It should have played a greater role in developing the rural economy, improving farmers' living standards and alleviating water shortages. However, as soon as drip irrigation technology came out, it was positioned as an expensive irrigation technology, which can only be applied to crops with high economic benefits; and more crops with low economic benefits use drip irrigation, with extremely thin or no profit, which greatly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G25/02
Inventor 张国祥吴普特牛文全范兴科冯浩汪有科高建恩戚鹏田照明
Owner YANGLING ENG TECH RES CENT STATE WATER SAVING IRRIGATION
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