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● Management system is filling station ● Main components of dispenser |
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● Main components of dispenser
一、The computerized part The Computerized part is composed of CPU board、displaying board、power supply board and pulse generator、functional switch、keyboard、etc. Possessing three forms of fueling: random, present amount of money and present number of liters, and through three-section backlight display showing the total price、the number of liters and the unit price, display being clear and bright. In the software, the function of self-compensation is added to control preseting and make preset fueling accurate and reliable. Ibuttom presently advanced in the world instead Eeeprom, is adopted as the memory, the former is accessible infinitely and perfect in date storage and immune to power off. In the software, the function of self-detection is added, the pump will stop of itself when fault is taken place or operate in error, the self-detection system can indicate immediately the code of faulty part to facilitate maintenance and repairing. 二、Meter  Use the most advanced metering instrument today. The measuring instrument is composed of two 120obi-directional pistons. Each cycle of the pistons expels a liter of oil. In structure connecting slots are used of position limiting with small accumulating error and long life. Furthermore, new type materials are used for connecting rods and pistons, accruing accuracy of metering through internal structure. The complete set is kept at a metering accuracy of ±0.3% after using 10 million liters. Graceful is in outer appearance and easy is in maintenance and repair. 三、Oil-gas separating composite pump  The
enterprise first using oil-gas separating composite pump in China, and possesses its unique
merit: For oil-gas separation, a double float oil-gas separator together
with 180-mesh stainless filtering screen is used, giving a compact
structure. The Volume for oil-gas separation is large and separation
is complete. Flows are divided into two types: 50L/min and 90L/min.
However the outer dimensions of the blades are the same. The largest
horizontal delivery distance may reach 50m, which is the first among
dispensers with incorporated pump structure. Compared with other blade
pumps in China, there is no spring reeds in it, the blade is made
from special material, connecting pump body tightly depend on deadweight
and centrifugal force. Spring reeds are canceled by to reduce fault
rate, to prolong its life and to improve degree of reliability. The
number of blades used is double of that used in blade pumps currently
used in existing domestie blade pumps, to reduce noise and vibration.四、Connecting between motor and pump Shanghai Zhongyi is only one enterprise in China to use beltless driving mode, the pump and the motor are coupled directly through a coupler. Special energy-conserving type, explosion-protection type motor is used with a synchronous speed of 960rpm and power of 0.55kw and 0.75kw respective, the insulation is of class F. It is characterized by good safety behavior、small size、lightweight、easy installation、large torque, etc. Direct coupling is used for the motor-pump set, operation is smooth, noise is low and error in rotation is small. 五、Pulse generator In the pulse generator specialized for Zhongyi fuel dispensers developed with most advanced technique , photoelectric read-in mode is used. It most eminent feature is non-contacting and is accompanied with CMOS chip isolation and buffering technique to make counting signals steady and reliable. |
