Low Pressure Pipeline Feature
Sources: this site Click: Date: 2015-8-18 0:0:0
A project is placed in the form of pipe irrigation water pipes instead of open channel irrigation water delivered to the field by the watershed facilities. Divided by the pipe directly into the watershed outlet ditch water into the fields and field ditch, furrow. Aqueduct use of a variety of large and medium irrigation districts can use the nullah water and pressurized water delivery pipeline combined specifically for sprinkler water pressure water pipelines, as well as in the field of low-pressure pipe border irrigation ditch water. This chapter describes in the working pressure of less than 0.2MPa., since a low-water irrigation system independent. Pipe irrigation outlet flow is characterized by substantial, out without clogging occurs, it is still surface irrigation technology.
Aqueduct Features
A, saving water and energy
Aqueduct can reduce seepage losses and evaporation losses, compared with the soil furrow, aqueduct loss can be reduced 5 percent, the utilization ratio of soil drainage water increased by 30% to 40% over the five-saving way of concrete lining % ~ 15%. Irrigation for wells, water-saving means to cut energy consumption.
B, province, provincial workers
With soil drainage water, field channels land generally 1% to 2% of the irrigated area, some as much as 3% to 5%, while only 0.5% aqueduct irrigation, improved land utilization. Meanwhile, aqueduct speed, avoid running water leaking, shortening the irrigation cycle, saving patrol drainage and dredging maintenance labor.
C, small investment, high efficiency
Lower pipe irrigation investment. Water under the same conditions, due to irrigation can be timely and appropriate to meet the water demand of the crop growing season, and thus play a role in increasing production.
D, adaptability
Pressure aqueduct, can the ditch, climbing and cross the road, not the terrain restrictions, easy construction and installation, convenient for people to understand, easy to promote. Coupled with field ground mobile hose, watering can solve the problem of fragmented plots, agricultural production responsibility for the current form.
Pipeline Technical Requirements
1. Able to operate in pressure design requirements. Pipe allowable working pressure should be 1.4 times the maximum normal operating pressure of the pipeline. When the pipe may have a greater water hammer pressure. Pipe allowable working pressure should not be less than the maximum pressure when the water hit.
2. Uniform wall to wall thickness should be less than 5% errors.
3. Buried underground pipe in agricultural machinery and vehicles loaded with loads of action pipe radial deformation rate no greater than 5%.
4. Meet the requirements of transport and construction, can withstand a certain degree of regional subsidence stress.
5. Pipe wall is smooth, with no visible cracks in the inner and outer walls, soil resistant to chemical attack, anti-aging, life meets the design life requirements.
6. Convenient pipe and tubing, pipe and pipe fittings, the connection should meet the working pressure, flexural, anti-leakage, strength, stiffness and other safety requirements.
7. Mobile pipeline should be lightweight, easy quick release, anti-collision, abrasion, cannot easily be punctured and a good anti-aging properties.
8. When the water transport has special requirements, should also consider the special needs of the pipe. Such as irrigation and drinking water combined pipeline transporting drinking water to satisfy the requirements.
Aqueduct Features
A, saving water and energy
Aqueduct can reduce seepage losses and evaporation losses, compared with the soil furrow, aqueduct loss can be reduced 5 percent, the utilization ratio of soil drainage water increased by 30% to 40% over the five-saving way of concrete lining % ~ 15%. Irrigation for wells, water-saving means to cut energy consumption.
B, province, provincial workers
With soil drainage water, field channels land generally 1% to 2% of the irrigated area, some as much as 3% to 5%, while only 0.5% aqueduct irrigation, improved land utilization. Meanwhile, aqueduct speed, avoid running water leaking, shortening the irrigation cycle, saving patrol drainage and dredging maintenance labor.
C, small investment, high efficiency
Lower pipe irrigation investment. Water under the same conditions, due to irrigation can be timely and appropriate to meet the water demand of the crop growing season, and thus play a role in increasing production.
D, adaptability
Pressure aqueduct, can the ditch, climbing and cross the road, not the terrain restrictions, easy construction and installation, convenient for people to understand, easy to promote. Coupled with field ground mobile hose, watering can solve the problem of fragmented plots, agricultural production responsibility for the current form.
Pipeline Technical Requirements
1. Able to operate in pressure design requirements. Pipe allowable working pressure should be 1.4 times the maximum normal operating pressure of the pipeline. When the pipe may have a greater water hammer pressure. Pipe allowable working pressure should not be less than the maximum pressure when the water hit.
2. Uniform wall to wall thickness should be less than 5% errors.
3. Buried underground pipe in agricultural machinery and vehicles loaded with loads of action pipe radial deformation rate no greater than 5%.
4. Meet the requirements of transport and construction, can withstand a certain degree of regional subsidence stress.
5. Pipe wall is smooth, with no visible cracks in the inner and outer walls, soil resistant to chemical attack, anti-aging, life meets the design life requirements.
6. Convenient pipe and tubing, pipe and pipe fittings, the connection should meet the working pressure, flexural, anti-leakage, strength, stiffness and other safety requirements.
7. Mobile pipeline should be lightweight, easy quick release, anti-collision, abrasion, cannot easily be punctured and a good anti-aging properties.
8. When the water transport has special requirements, should also consider the special needs of the pipe. Such as irrigation and drinking water combined pipeline transporting drinking water to satisfy the requirements.
