Refuelling trucks and trucks belong to dangerous goods carriers. Often some people will confuse their two models. It seems that the two models are not much different, but there are still some differences. First of all, it is not the same as the function. Compiled.

In short, the refueling vehicle is better than the oil tanker in function, and the tanker only has the transportation function. The refueling tanker not only has the transportation function, but also has the fuel counting function, with the functions of oil absorption, pump oil, multiple oil distribution, Distribution and other functions. Because the refueling trucks are equipped with tankers, automatic reels, refueling guns, pumps and other major components on the basis of tankers, they are mainly used for the transportation and storage of petroleum derivatives. The refuelling car is an upgraded version of the tanker.

In more detail, the refueling vehicle can be equipped with a vehicle-mounted computer tax-controlled refueling machine on the vehicle body, pumping the oil into the refueling machine through an oil pump, and then allowing the refueling machine to achieve refueling according to “increase” or “input amount”, or install a flow meter. This kind of refueling vehicle has great flexibility without any constraints on the site. It does not have gas stations in cities, suburbs, mines, docks, airports, stations, country roads, etc., for cars, loaders, excavators, cranes, mines, etc. Equipment and ships can be refueled and can be refueled according to demand, which greatly improves the convenience of refueling of various types of automobiles and equipment, and reduces the helplessness of oil stations that cannot be found due to lack of oil. This is a true flow. GAS. The oil tanker is only a separate dangerous goods transport vehicle that can be separated from the warehouse and can be divided into different oil products.

After the above analysis, we should have a more detailed understanding of refueling vehicles and tankers, knowing their use, can help everyone more targeted purchases.

Shut-off Valve

Globe valve, also known as cut-off valve, is a mandatory sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from under the valve disc, the resistance that the operating force needs to overcome is the friction force between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter of the valve should be large, otherwise the failure of the top of the valve stem will occur. According to the connection method, it is divided into three types: flange connection, thread connection and welding connection. After the appearance of the self-sealing valve, the medium flow direction of the globe valve is changed from the top of the valve disc into the valve cavity. At this time, under the action of the medium pressure, the force to close the valve is small, but the force to open the valve is large, and the diameter of the valve stem can be adjusted accordingly. decrease. At the same time, under the action of the medium, this form of valve is also tighter. my country's valve "Three Chemicals" once stipulated that the flow direction of the globe valve should be from top to bottom. When the globe valve is opened, the opening height of the valve disc is 25% to 30% of the nominal diameter. The flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the fully open position of the globe valve should be determined by the stroke of the valve disc.

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