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PE water supply pipe network to meet the practical application requirements


Release time:

Oct 09,2019

Pe water supply pipe network should meet the demand of practical application 1) lay out the pipe network according to the plan of city planning. when laying out, the possibility of construction of water supply system by stages should be considered, and there should be enough room for development. this part of design mainly considers the development of industry and population in the near and long term of the city to design the pipeline layout. 2) The layout of the pipe network must ensure the safety and reliability of water supply. When an accident occurs in the local pipe network, the water cut-off range should be minimized. 3) The pipeline is arranged in the whole water supply area to ensure that users have sufficient water and water pressure; 4) Strive to lay pipelines in the shortest distance to reduce the cost of pipe network and water supply energy. 3, pipeline longitudinal temperature change

PE water supply pipe network to meet the practical application requirements
 

1) The pipe network shall be arranged according to the urban planning plan, and the possibility of phased construction of the water supply system shall be considered during the layout, and sufficient room for development shall be reserved. This part of the design mainly considers the short-term and long-term industrial and population development of the city to design the pipeline layout.
 
2) The layout of the pipe network must ensure the safety and reliability of water supply. When an accident occurs in the local pipe network, the water cut-off range should be minimized;
 
3) The pipeline is arranged in the entire water supply area to ensure that the user has sufficient water volume and water pressure;
 
4) Strive to lay pipelines in the shortest distance to reduce the cost of pipe network and water supply energy;
 
3. Calculation of longitudinal temperature deformation of pipeline
 
The linear expansion coefficient of polyethylene pipeline is 5-6 times higher than that of steel pipe. Therefore, the influence of thermal expansion and contraction of pipeline must be considered when the pipeline is laid as open pipe or in soil with small friction force.
 
Generally, the longitudinal deformation caused by temperature difference can be calculated by the following formula:

Where: longitudinal deformation caused by temperature difference, mm a: linear expansion coefficient of polyethylene flint pipe mm/m t:
 
L: Pipe length m
 
A T: Temperature difference between internal and external medium during pipeline use t:
 
AJ =0.6SA Ts Ajg
 
In the formula: "Ts: the maximum change temperature difference 1C in the pipeline" Tg: the maximum change temperature difference 1C in the ambient temperature outside the pipeline


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