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How to choose a suitable safe and explosion-proof pry mounted gas station

Release Date: August 08, 2024

What is barrier explosion-proof material?

Barrier explosion-proof material products are explosion-suppressing materials made of special aluminum alloy series materials and special processing technology. Barrier explosion-proof technology is a proprietary technology that can effectively prevent flammable and explosive gaseous and liquid hazardous chemicals from causing explosions due to accidents (static electricity, welding, shooting, collision, wrong operation, etc.) during storage and transportation, and fundamentally solve the inherent safety of flammable and explosive liquid and gaseous hazardous chemicals during storage and transportation.

The use of barrier explosion-proof materials can be used for explosion-proof of fuel tanks and oil tanks such as fuel transport vehicles, mobile refueling vehicles, airport refueling vehicles, military vehicles, aircraft, and ships; it can be used for explosion-proof of various containers and tanks for storing gasoline, diesel, banana water, acetone, etc. The characteristics of barrier explosion-proof technology can inhibit the explosion of solvents such as gasoline, methane, propane, diesel, acetone, toluene, ethane, petroleum, and similar substances. Resist the volatilization of oil and gas in the container, reduce oil loss, and effectively reduce pollution to the environment. When a container containing this material leaks, it can be directly repaired with gas and electric welding in the oil-carrying mode. Block the burning of flames, slow down the speed of flame propagation, significantly reduce the height of flame burning, and facilitate fire extinguishing. (Metal) equipped with this material can effectively eliminate static electricity. Tank trucks equipped with this material can reduce the shaking of liquids during transportation. This material does not wear the inner wall of the container, the material itself does not pollute the oil quality, does not deform in the container, does not corrode, lose, break, or block various oil lines in solvents such as oil, and can be used for a long time after being loaded once.

The physical and chemical concepts of explosion-proof barrier materials

We all know that barrier explosion-proof materials are used in skid-mounted gas stations. Qualified barrier explosion-proof materials that meet the requirements can help gas stations avoid explosion disasters to a large extent. Its powerful explosion-proof ability is actually supported by physical and chemical concepts. Let’s introduce the physical and chemical concepts of explosion-proof barrier explosion-proof materials.

1. Physical principle; flame obstruction effect. Flame propagation is similar to fluid flow. One of the factors that affect the flame propagation speed is its propagation resistance. The pores of explosion suppression materials determine the resistance. The larger the pores, the faster the propagation speed. The smaller the pores, the slower the propagation speed. When the pores are small to a certain extent, the flame propagation can be stopped. This effect of flame propagation being hindered by the pores of the material is called material obstruction. Thermal conduction effect: During the propagation of the explosion flame, the heat is quickly absorbed and dissipated by the material with a large surface area, and the flame propagation intensity decreases, so the energy decreases until it is extinguished.

2. Chemical explanation: The mixed explosion of the free radical "vessel wall adsorption effect" is a chain reaction of free radicals. The reaction rate is limited by the number of free radicals in the unit volume, and the free radicals can be adsorbed by the "impurities" on the surface of the vessel wall and the "vessel wall" material. This "vessel wall adsorption" effect reduces the number of free radicals in the unit volume. The larger the surface area of the "vessel wall", the more "impurities", and the more opportunities for free radicals to "absorb the wall". Therefore, the fewer the number of free radicals in the unit volume, the number of free radicals participating in the combustion reaction is reduced, and the speed of the combustion and explosion reaction is suppressed until the reaction is interrupted.

3. Cooling effect: The heat generated by combustion can further increase the reaction temperature and speed up the reaction until it deflagrates and explodes. The thermal conductivity of the barrier explosion-proof material has the effect of dissipating heat and reducing temperature. This "cooling effect" inhibits the rise in temperature and the acceleration of the reaction speed, making it impossible to form a deflagration.

The above is an explanation of the physical and chemical concepts of explosion-proof barrier explosion-proof materials from three aspects of physical principles, chemical explanations, and cooling effects. I hope it will be helpful for everyone to understand barrier explosion-proof materials.

Safety performance and application scope of skid-mounted gas stations

Tai'an Shengding Metal Container Manufacturing Co., Ltd. mainly produces explosion-proof barrier skid-mounted equipment, explosion-proof barrier materials, oil tanks, oil storage tanks, horizontal oil tanks, vertical oil tanks, acid and alkali tanks, water treatment equipment, container heads, boiler auxiliary machines and other types of metal containers.

Industrial and mining buildings: textile mills, steel mills, power plants, cement plants, industrial parks, mines, large construction sites (high-speed rail, highways, construction development, etc.), commercial concrete stations

Transportation: driving schools, taxi companies, public transportation, logistics companies, freight companies, transportation bureau systems

Hub attractions: airports, scenic spots, docks, water centers

Parking services: 4S stores, car clubs, clubs, university parking lots, large supermarket parking lots

Special Category: Municipal, Transportation, Fire Brigade...

The barrier explosion-proof skid-mounted gas station (container) is a ground movable gas station integrating oil storage tanks, gas pumps, and video surveillance; the oil storage tanks of the barrier explosion-proof skid-mounted gas station have undergone barrier explosion-proof technical transformation. The barrier explosion-proof technical transformation of the skid-mounted gas station is to fill the barrier explosion-proof material (barrier explosion-proof material is a mesh structure material composed of special aluminum alloy) in a certain density in the oil storage tank storing flammable and explosive liquids. When encountering open flames, static electricity, impact, lightning strikes, welding, and accidental violent impact accidents, there will be no explosion accidents. It has the characteristics of fireproof and explosion-proof, safety and environmental protection, small footprint, and easy migration. The product is widely used in bus stops, ports, docks, airports, large construction sites, and internal gas stations of enterprises.

1. The double-walled storage tank structure of the skid-mounted gas station, the supplier of the skid-mounted gas station, the inner tank is filled with barrier explosion-proof metal materials that meet national standards. Once an accident occurs, such as open flames, static electricity, lightning strikes, etc., it will not explode, which can avoid accidents; at the same time, an automatic alarm control system is also set up to detect abnormal working conditions in time and carry out emergency treatment.

2. The skid-mounted gas station is a barrier explosion-proof skid-mounted refueling device that has passed the inspection of the China Special Equipment Inspection Institute. The inspection items include refueling with fire; ignition of the oil tank mouth; drilling and repair welding of the oil tank; burning the oil tank with No. 0 diesel for one hour and other tests.

Several important points to note when installing oil pipeline expansion joints

1. Before installing the expansion joint of the oil pipeline of a skid-mounted gas station, check whether its model and specifications meet the design requirements of the pipeline configuration

2. The medium flow direction mark of the expansion joint of the oil pipeline of a skid-mounted gas station with a guide tube should be consistent with the flow direction of the medium in the pipeline to prevent debris from accumulating on the spring support and hanger and affecting the normal operation of the corrugated expansion joint or generating turbulence between the guide tube and the bellows, causing vibration.

3. During the installation process, welding slag is not allowed to splash onto the surface of the corrugated shell, the corrugated shell is not allowed to be subjected to other mechanical damage, and arcing is not allowed on the corrugated shell or other parts of the expansion joint.

4. The expansion joint of the oil pipeline of a skid-mounted gas station meets the requirements of installation length and rated compensation before leaving the factory. Its pre-stretching and pre-compression should be determined before ordering and completed by the factory before leaving the factory.

5. If the angular and transverse bellows expansion joints have the requirements of quasi-tightening or eccentric installation, they shall be installed on site. The cold tightening or eccentric installation direction shall be the opposite direction of the working displacement. The auxiliary components used for deformation shall not be removed until the pipeline is installed.

6. For axial bellows expansion joints that are not pre-deformed before leaving the factory, products that require pre-deformation of bellows expansion joints during construction shall be adjusted to the specified size using screws and nuts before installation before installation.

7. During installation, the coaxiality deviation between the expansion joint of the oil pipeline of the skid-mounted gas station and the pipeline shall not exceed 3mm. It is strictly forbidden to use the deformation of the bellows expansion joint to forcibly adjust the installation of the pipeline to exceed the tolerance, so as not to affect the normal function of the bellows expansion joint, reduce its service life, and increase the load of the pipe system equipment and supporting objects.

8. For bellows expansion joints with shells, the orientation of the drain port shall be arranged downward so that the accumulated water in the shell can be drained.

9. For the expansion joint of the oil pipeline of the skid-mounted gas station connected by flange, it is not allowed to twist the other end of the bellows expansion joint by external force in order to align the bolt hole, because the bellows expansion joint cannot absorb and withstand torsion.

10. Removal of auxiliary components After the pipeline is installed, considering the stress caused by the thermal expansion and contraction displacement caused by the installation temperature difference, the water pressure test should be carried out as soon as possible to remove the auxiliary positioning components and fasteners painted with yellow marks on the bellows expansion joint for installation and transportation to reduce the external stress load of the pipeline support.

11. The movable components used in the expansion joint of the oil pipeline of the skid-mounted gas station shall not be stuck or restricted by external components. The non-metallic expansion joints of each active part shall be guaranteed to operate normally.

12. When installing the hinged bellows expansion joint, the axis of the hinge pin must be perpendicular to the plane formed by the bent pipe section, that is, the hinge rotation plane is consistent with the displacement rotation plane. The rotation plane of the universal hinged bellows expansion joint is any plane.

13. For the transverse bellows expansion joint installed near the pipe elbow, a guide bracket should be provided at each end, one of which should be a plane guide bracket, and ensure that there is sufficient clearance for movement.

14. When installing the hinged skid-mounted gas station oil pipeline expansion joint in groups, the guide bracket and plane guide bracket should also be considered.

15. For the shell-type skid-mounted gas station oil pipeline expansion joint, especially the high-temperature, high-pressure, and steam pipe system, open the drain port after the water pressure test or before driving to remove the accumulated water or medium.