1. Pump suction pipe and the outlet pipe flow
(1) Water suction pipe.
When the diameter is less than 0~1., it is 1 2m/s 250mm;
Diameter at 250~1000mm, for 6m/s- 1.2~1.
(2) The water outlet pipe
When the diameter is less than 5~2., it is 1 0m/s 250mm;
Diameter at 250 a 1600mm, for the 5m/s 2.0~2.
2. Minimum design flow rate of pressure transport pipe (see table 8-15)
Piping system
(1) the compressed air pipeline slope should not be less than 0.002, and should be set to the discharge pipeline system of accumulation of oil and water.
(2) pipe of compressed air pipe: the filter is generally used to scrub the steel pipe; control only the table system, mixed bed resin mixed with. When the diameter of the cut off valve is greater than 50mm, the valve should be used.
(3) the connection of compressed air pipe, with the exception of equipment, valves and other places with the flange or screw connection, the other parts should be welded.
(4) the compressed air pipelines buried in the ground shall be treated according to the corrosion resistance of the soil. The buried pipeline of compressed air shall be laid under the freezing line.
(5) compressed air pipe in the building population, should be installed to cut off the valve and pressure gauge.
(6) the load fluctuation of compressed air is larger or the requirement of gas supply pressure is stable, it is better to set the gas storage tank or other pressure stabilizing device. Gas storage tank should be arranged in the outdoor, and should be located in the north of the machine between the 0 vertical storage tank and the external wall of the factory's net distance, should not be less than half of the height of the gas tank.
(7) DN<50 pipeline flow rate should be less than 8m/s.
