FUEL DISPENSER & SPARE PARTS

FUEL DISPENSER & SPARE PARTS

Fuel dispenser are used in petroleum-retail service stations for filling lightweight oil including gasoline or diesel etc. We have taken up the production of fuel dispenser since1992. Among our gigantic business portfolio, oil transfer pumps were first put on our agenda and then mechanical fuel dispensers, electronic fuel dispenser in subsequence.

Our fuel dispensers have 3 series, namely, C series, D series and S series. All of the series share the same electronic system, which consists of flow meter, combination pump, auto nozzle etc. But C series is little in size and has a general outline with hoses from the middle. And D series contains jambs with stainless steel and hoses from the top. Then S series have a novel streamline outline and hoses from the top, which is bigger in size in comparison with the other ones.

used to keep a certain position to refuel. Working principal Pressured oil flow into the chambers in where main and vice valve located after switching main valve and flow out of spout because vice valve is opened. Liquid flowage reduces the static pressure and the pressure in upper chamber of switch. The pressure on the chambers of upper and low switch membrane are equivalent due to the front of spout communicating atmosphere. When inlet vent is flooded by oil, the lower chamber of switch membrane still keeps atmospheric pressure. Thus, pressure difference is generated between the upper and lower chambers of switch membrane, the membrane and auto-shut level moving upward, auto controlled level moves downward under the function of switch handle. Finally, steel ball is driven into the hole of auto controlled level; switch handle continues to move downward; main valve is closed. In order to form the auto-shut function, fuel dispenser two oil passages with different sections should be set (See Diagram 2-32). Here the Bernoulli equation as followed in order to explain the principle of auto-shut: �? = 12 ρv12+ρgh1=�?+12ρv22+ρgh2 (2--6) Among the above formula: ρ── oil density �?── pressure fuel dispenser in main valve passage v1 ── velocity of flow in main valve passage h1── height of main valve �?── pressure in vice valve v2── velocity of flow in vice valve passage h2── height of vice valve Diagram 2-32: Auto-shut nozzle Due to small nozzle body, it could be regarded as a horizontal pipe, that is h1= h2 From Formula 2-6: �?－ｐ2�?2ρ(v22－v12) (2-7) According the following Formula: v1v2=A2 A1 In the Formula: A1 ── section of main valve passage A2 ── section of vice valve passage The Formula can be converted into: �?－ｐ2�?2ρv22 [1�?A2A1)] It is known from Formula 2-8 that if A2 / A1 is certain value, P2 becomes a negative value when velocity of flow increasing a certain extent, that is, P2 smaller than at fuel dispenser

PPLICATION　　Page: 90　　 PRODUCT PER FUELLING MODE DATABASE　　 DB_Ad = PR_DAT (61H) + Prod_Nb (00000001-99999999) + FM_ID (11H-18H)　　 Data Data Element Name Field Type ReadWrite MO　　 Description　　 _Id (Value) in State　　 5 Bin R(1-9) M　　 Max_Auth_Time (see note 1)　　 (05H) (0-255) W(1-9)　　 Specifies the maximum amount of time (in 10 second units)　　 that the FP will stay in the AUTHORISED state.　　 0 = authorisation time is unlimited　　 Please note that a write can occur to this Data_Id in any　　 fuel dispenser state. However the new value will only become active　　 when the FP next goes into states 1 to 5.　　 Note 1.　　 The Max_Auth_Time Data Id 5 in the Product Per Fuelling　　 mode data base in only in this data base to ensure　　 fuel dispenser backwards compatibility. To determine the time a FP　　 should stay in the authorised state Data Id 13 calculator　　 data base should be used.　　 PCD Comment:　　 As many proprietary pump protocols won t allow a　　 maximum authorisation timer to be set remotely the PCD　　 will have to have its own watch dog timer to time the filling　　 time. If this timer expires the PCD will have to stop the　　 filling.　　 6 Volume R(1-9) M　　 User_Max_Volume　　 (06H) W(1-9)　� fuel dispenser

AP SEPTEMBER 11th is everywhere. TV specials air nightly. A graphic version of the 9 11 Commission Report was published two weeks ago. City Hall has released 1,600 emergency calls recorded that terrible morning, revealing the heroism and the confusion. But for most New Yorkers, reminders are unnecessary. Breathing in the clear blue air brings back the day. And, for some, breathing is difficult. A Mount Sinai Medical Centre study, released on September 5th, shows that almost 70% of the attacks first-responders (police, firemen, building and utility workers) have new or worse lung problems since going to Ground Zero. Some 40,000 rescue and recovery workers were exposed to dust and toxins. Three years ago, the city set up a registry to track the long-term effects on 71,000 people who worked or lived in Lower Manha fuel dispenser ttan. More than half reported respiratory problems. Last month George Pataki, New York s governor, signed laws increasing benefits for thousands of sick first-responders, scrapping the two-year statute of limitations for applying for workers compensation. But who will pay? New York fuel dispenser s mayor, Michael Bloomberg, estimates that the new laws could cost the city $550m over the next decade. The money will probably come from the city s overburdened pension funds, but the mayor wants federal and state government to help. As for the World Trade Centre site, there has been little progress. Years of back-room fighting between politicians, victims families, the leaseholder, the architects and the Port Authority of New York and New Jersey, which owns the site, have delayed reconstruction. But work is at last under way on digging out the Freedom Tower s foundations, and the tower may be built by 2011. Construction of the memorial footings began on August 17th. The area will become history s largest construction site, or so says the Lower Manhattan Construction Command Centre, an agency fuel dispenser