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Fuel truck information

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Operation rules and modification method for oil loading of tank truck
Release time: 2016-07-25 15:27:35 Source: itforthai.comViews :

The conventional configuration of the previous tank truck was a special oil pump equipped with a pump inlet and outlet pipe. There are two types of pipelines, such as Wuhan carbon steel and 304 stainless steel. There are up to 30 cubic meters, and some semi-trailers, their volume is 55 cubic meters. Their main method of oiling is to pour oil into the tank from the manhole above the tank. However, to improve safety, our tanker trucks now have a bottom tank filling process.

     What is a bottom can? Bottom canning is also referred to as the bottom loading oil system. Important components required for bottom loading transformation: the main components of the bottom canning are the exhaust gas recovery system, the anti-spill system, the subsea valve, the European standard tank mouth, the control head, and the SO2 socket. , Antistatic system, bottom canned API connector, etc. Our main processes are as follows: steam purging, washing and wiping tanks; cutting oil collecting tanks, installing subsea valves; installing oil circuit systems; installing gas phase circuits; replacing closed city manhole covers; water pressure, gas Dense, kerosene test leaks.


This is the overall working picture of the oil loading system. You can see the importance of the electrostatic grounding belt. This type of electrostatic grounding device for large gas stations is mainly fixed. This type is usually a gas station solution. They are installed near large landlords' oil depots. When each gas truck comes over for refueling operations, they can be connected at high speeds and grounded statically. The alarm is a standardized antistatic product for oil loading and unloading. It can not only introduce the static electricity generated during the liquid transfer process to the ground, but also automatically detect the grounding condition throughout the process. When the ground is bad or disconnected, an audible alarm will sound to ensure the safety of production operations.


This picture can be easily seen that the tanker truck can be divided into bins. Each bin requires an aluminum alloy tank port (also called a manhole), which can be equipped with an anti-leak probe, a subsea valve, an oil discharge joint, and a subsea valve. , Also known as the emergency shut-off valve, is installed on the bottom of the tank and used when refueling, which is easy to operate, time-saving, safe and environmentally friendly.
Pressure-balanced subsea valve is used for multi-tank tanker trucks, which can carry out separate loading and unloading of different tanks. The three-way design simplifies the pipeline, reduces the load, is easy to operate, and is safe and reliable.  
The pneumatic shut-off valve is installed at the bottom of the tanker tank and can be refueled. The internal pressure of the valve is small, the flow is large, and there is a cut-out groove on the flange of the valve body. If the force is too large, the car body pipeline and the tank body will be automatically disconnected, and the automatic centering plunger and durable spring will still remain sealed, and the medium in the tank will not leak, thereby ensuring the safety of the oil tank. When there is no air source or it cannot be opened for other reasons, the cylinder piston rod can be opened and manually opened.


The above picture is the aluminum alloy European standard tank mouth, also called manhole cover. It is installed on the top of the oil tank. It has built-in breathing and emergency exhaust functions, and can be installed on the manhole cover with oil and gas recovery valve, oil measuring hole and anti-overflow. During the loading process, the anti-overflow sensor system will automatically alarm when the liquid level reaches the detection position, so as to stop the oil loading. The built-in breathing valve keeps the internal pressure of the oil tank stable during oil transportation and balances it with the external pressure. Its design to prevent overflow prevents the oil tanker truck from being sealed in the event of an accident. The pressure of the emergency exhaust device is inside the tank. In the case of a sharp rise, it will automatically open to release the pressure in the tank, thereby preventing accidents and greatly improving the safety of oil transportation.

The main product accessories of the oil tanker are: manhole cover, oil and gas recovery valve, oil and gas recovery joint, subsea valve (emergency cut-off valve), oil discharge valve, anti-overflow sensor, etc. Products have the advantages of reasonable design, advanced technology, safety and reliability, energy saving and environmental protection.

  、海底阀 1.Subsea valve

The subsea valve, also known as the emergency shut-off valve, is installed on the bottom of the tank and used when refueling. It is easy to operate, time-saving, safe and environmentally friendly.
Pressure-balanced subsea valve is used for multi-tank tanker trucks, which can carry out separate loading and unloading of different tanks. The three-way design simplifies the pipeline, reduces the load, is easy to operate, and is safe and reliable.  
The pneumatic shut-off valve is installed at the bottom of the tanker tank and can be refueled. The internal pressure of the valve is small, the flow is large, and there is a cut-out groove on the flange of the valve body. If the force is too large, the car body pipeline and the tank body will be automatically disconnected, and the automatic centering plunger and durable spring will still remain sealed, and the medium in the tank will not leak, thereby ensuring the safety of the oil tank. When there is no air source or it cannot be opened for other reasons, the cylinder piston rod can be opened and manually opened.

、油气回收阀 2 , oil and gas recovery valve

     The oil and gas recovery valve is a device for recovering the oil and gas generated during the loading and unloading of oil. It can be directly installed on the tank of the top of the tank truck or on the manhole cover. It can be connected to the bottom of the tank through a push rod. The valve realizes mechanical linkage opening, and its opening and closing can also be controlled by the air source.
     The oil and gas recovery valve can recover all the oil and gas generated by the volatilization of oil during loading and unloading to the oil tank in the reservoir area, avoiding leakage of oil and gas, and condensing and reusing oil and gas through other oil and gas recovery devices, thereby achieving the purpose of energy conservation and environmental protection.

Functions and features:
    When the tanker oil tank is filled, the oil and gas recovery valve opens, and the rising liquid level pushes the oil and gas upward, and returns to the oil tank in the reservoir area through a series of oil and gas recovery systems.
    When the tank truck is unloaded, the recovery valve allows the recovered gas to enter the tank truck oil tank. In systems without oil and gas recovery facilities, air is allowed to enter tanker tanks.
    High tightness ensures the safety of tank truck transportation.
    Reasonable valve body design ensures high efficiency of oil and gas recovery.

、油气回收接头 3 , oil and gas recovery joints

     Oil station oil and gas recovery system consists of fire blocking breathing valve, pipeline flame arrester, three-way floating ball valve, oil and gas recovery joint, oil and gas recovery quick joint, etc., and a closed loop system with the tanker oil and gas recovery system, which will effectively refuel at the gas station The oil and gas produced during the process is recycled and reused, avoiding the diffusion of oil and gas.

、下装阀 4.Loading valve

     Bottom loading valve, also known as oil discharge valve, is installed under the side of the tanker truck for fast oil discharge. The front interface is in accordance with the American API Rp1004 standard, which is convenient to connect with the discharge hose hoe. The hydrodynamic design of the internal structure minimizes internal pressure at high flow rates. The outlet adopts a flat bottom structure, and there is no oil leakage when the joint is disassembled, which is safe and reliable. The quick oil discharge hose connector adopts an inclined 70 degree design to facilitate the connection of the hose and effectively increase the service life of the hose.

Functions and features:
    Integral cast aluminum housing, anodized, parts can be replaced.
    The flat bottom structure of the outlet ensures that all the liquid is discharged and reduces environmental pollution.
    The two-pole fixed aluminum alloy push rod clearly shows the valve position.
    It complies with American API RP1004 standard and can be docked with API connector.
    It adopts die-cast aluminum structure with a weight of 4.4 kg, which improves the payload.
    Viton seals for high octane fuels and additives.
    The fluidics design of the internal structure minimizes pressure drop at high flow rates.
    Stainless steel control shaft, spring, cam and valve stem ensure long life.

、防溢流探杆 5.Anti-overflow probe

     Uses: Anti-overflow electronic sensors are widely used in all kinds of container tanks when they are hermetically filled with liquid, a safety device to prevent the liquid from leaking and leaking in advance. It is installed on the manhole cover on the top of the container tank. When the position reaches the warning limit, the sensor will automatically alarm and open.

、欧标罐口盖 6.European cap

    It is also called manhole cover. It is installed on the top of the oil tank. It has built-in breathing and emergency exhaust functions, and can be installed on the manhole cover with oil and gas recovery valves, oil measuring holes, anti-overflow detection rods, etc. During the oil filling process, when the liquid level reaches the detection position, the sensing system will automatically alarm to stop the oil loading. The built-in breathing valve keeps the internal pressure of the oil tank stable during oil transportation and balances it with the external pressure. Its design to prevent overflow prevents the oil tanker truck from being sealed in the event of an accident. The pressure of the emergency exhaust device is inside the tank. In the case of a sharp rise, it will automatically open to release the pressure in the tank, thereby preventing accidents and greatly improving the safety of oil transportation.

Functions and features:
 
Different pressure parameters can be set as required to ensure reliable breathing function and emergency exhaust function.  
 
Respiratory function   When the internal pressure of the oil tank is 6 ~ 8KPa higher than the external pressure or 2 ~ 3KPa lower than the external pressure, the breathing valve will automatically open to allow the gas inside and outside the tank to pass through, which can reduce the excessive pressure difference between the inside and outside and play a safety protection role. When the pressure difference between the internal pressure of the oil tank and the external pressure is -2 ~ 6KPa, the breathing valve is closed to keep the proper pressure in the tank, so as to avoid the volatilization of the oil.
  Dumping   In the event of an accident, when the tanker dumps, the anti-overflow stopper in the breathing valve automatically seals the aisle to prevent danger due to oil leakage.  
 
Emergency ventilation   When the tanker is accidentally in a high temperature environment, it effectively releases the pressure in the tank and prevents the tank from exploding. When the internal pressure of the tank exceeds the external pressure of 21 ~ 32KPa, the emergency exhaust device starts to work, and its maximum exhaust volume reaches 7000m3 / h, which can effectively prevent the explosion accident of the oil tank.
  Two-stage opening: After the tank lid is fully opened, release the pressure in the tank first.
  Can be equipped with a lock and configured according to user requirements.
  Three auxiliary openings can be used to install oil measuring holes, anti-overflow detection rods, and oil and gas recovery valves.


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