How to classify spiral steel pipes based on their operating modes?
Irrigation systems using spiral steel pipes can be classified into mobile, semi-fixed, and fixed types according to their operating modes.
Mobile System: In this system, not only the water source but also the pipelines and water supply equipment can be moved. While some water pumps are fixed, some can also be mobile. Spiral steel pipes often adopt film plastic hoses or vinylon-coated plastic hoses, which are simple, convenient, cost-effective, flexible, and adaptable, allowing easy navigation through trenches and turns. However, film plastic hoses are not durable, prone to breakage, and typically have a lifespan of only 1-2 years. During the later stages of tall-stalk crop growth, it becomes difficult to move the hoses between rows due to the height of the crops.
Semi-Fixed System: In this system, part of the piping system is fixed, while another part is mobile. Typically, the main pipeline or trunk line is fixed, while the branch pipes are underground pipes connected to water inlets, with flexible hoses moved to the field as needed. This arrangement features large intervals between branch pipes and outlets, reducing the amount of fixed buried piping and the investment per unit area. However, the frequent movement of surface hoses leads to high labor intensity and poor working conditions.
Fixed System: In low-pressure pipeline irrigation systems, all levels of piping and water distribution facilities are buried underground and fixed. Water supply hydrants or water outlets directly supply water to field furrows and borders without soft hoses connections. The shorter lateral furrows and high density of fixed spiral steel pipes with high standards facilitate easy operation and management, resulting in uniform irrigation. However, the initial investment is relatively large.
How to Ensure Safety Management of Spiral Steel Pipes?
Regarding the issue of exceeding quality standards for spiral steel pipe orifice plate assemblies, the following preventive measures should be taken:
(1) Use internal supporting devices whenever possible.
(2) Ensure proper grading of weld cross-sections by the welding team.
(3) Conduct partial corrections using purple copper hammers or copper gasket hammers.
(4) Perform cutting operations when staggered orifice deformations are gentle.
Safety Management of Spiral Steel Pipes:
(1) When using internal supporting equipment, thoroughly inspect the supporting equipment, compressor equipment, and pipe hoists before construction. During use, follow operating procedures flexibly.
(2) Before working with partners, carefully check if their equipment is functioning normally. During operation, assign dedicated personnel to direct operations according to standard operational instructions to prevent accidents.
(3) When using earth mounds or sacks filled with rice husks as pipe cushions during construction, ensure the cushioning layers are sturdy and firm to prevent damage to the pipes from rolling. Avoid using frozen soil or stones as buffers for spiral steel pipes.
