We must first understand the principle of LNG cylinders work LNG cylinders of the main structure is double vacuum structure, including the containers, containers, interface of valves, liquid level sensor and other parts of LNG tank used to store cylinders at low temperature (162 ℃) of LNG, shell main role for forming interlayer space and bladder, and filled with insulation material, sandwich is pumped into a high vacuum, Thus forming a good insulation effect. If the vacuum effect is not good, the liquid gasification process of the cylinder liner will be accelerated, and the pressure of the liner is too high to affect the safety of the car.

 

LNG cylinder vacuum equipment belongs to precision equipment. 19943621211 equipment is directly supplied, which is a common solution for the high pressure caused by vacuum loss of LNG heavy truck. It is recommended to send the gas cylinder to a qualified factory for maintenance.

 

Vacuum pump refers to the use of mechanical, physical, chemical or physical chemical methods to be pumped out of the container to obtain vacuum devices or equipment.

 

Generally speaking, vacuum pump is a device that improves, generates and maintains vacuum in a closed space by various methods. In the pump chamber formed by rotating volume changes and the gas out of the pump, mainly in the process of inhalation, the volume of the suction chamber increases, the vacuum degree is reduced, the gas in the container is inhaled into the pump chamber, in the exhaust process, the volume becomes smaller, the pressure increases, and finally through the oil seal will be inhaled out of the pump. According to the working principle of vacuum pump, vacuum pump can be basically divided into two types, namely gas capture pump and gas transmission pump.