Until today, a large of fuel service stations in domestic use fuel dispenser located on the ground. The driven motor and pump are fixed in dispenser's enclosure. Depending on the negative pressure, the dispenser inject product into the tank car. The problem is the vaporization of product when the head is over 4.27m In contrast, the submersible turbine pump put in product directly,it drive product with the positive pressure from tank to dispenser on the ground. The total head can reach 30m without any vaporization, so the product tank can be installed more distance apart from station when design it. In addition, due to the pump is immersed in product, so the product is diractly through motor bearings, cooling and lubricating them, whenever pump is operating. The wear is little and temperature rise is lower, with the results that the trouble decrease and service life is longer. The leaking of product and noise of operation are also very small, so the pollution for environment decrease. |
