Chemical water pump
type many, the chemical industry commonly used pump can be called chemical pump, low temperature is also belongs to a kind of chemical pump, pump for low temperature chemical water pump is a pump used in low temperature environment, the performance characteristics of the specific chemical pump at low temperature and use what?
One, the characteristics of low temperature chemical pump 1, structurally symmetrical layout, make pump at low temperature even shrinking.
In order to keep low temperature and preventing leakage, adopting double hull structure, also should avoid the influence of low temperature brittleness.
2, in order to prevent friction heat causes the liquid gas vaporizing and burn the friction surface, use balance hole, symmetrical layout and more thrust bearing, rarely balance disc is used to balance the axial force (
The balancing drum if necessary)
3, bearing should pay attention to the influence of low temperature, dry friction should be considered and take measures to prevent frozen and start the precooling measures.
As the gap size and select appropriate friction performance good material (
Such as tetrafluoroethylene, graphite, etc. )
4, in order to improve the suction conditions, gas separation, not affected by temperature and axial expansion, adopt vertical Jane bag pump structure is more advantageous.
Material should be paid attention to when choosing materials of low temperature brittleness, in the cold, moisture, and should be taken when using precooling, anti-freezing measures, etc.
Second, the applications of low temperature chemical pump 1, in the petrochemical industry, biological engineering, medicine, steel, chemical, energy, refrigeration and other industries, between - 50 ℃ to - 150 ℃ low temperature medium, such as methanol, ethanol, ethylene glycol, methylene chloride, freon, etc.
2, city of liquefied natural gas (LNG) emergency gasification station, LNG receiving station door, used in industrial furnace combustion oxygen, especially can provide oxygen for oxygen-enriched combustion.
3, high pressure nitrogen/oxygen guarantee system on the ground, used in oil Wells of nitrogen/co2 filling equipment.
4, hydrogen, oxygen, nitrogen pipeline transmission and pressurized gasification equipment, cryogenic tank, cryogenic storage tank loading and unloading pump, circulating pump.
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