Functions and Characteristics of Pneumatic Loading Arms
Pneumatic loading arms are devices that use compressed air as the power source and operate the pipeline connection system through a pneumatic actuator. The working principle is based on air pressure drive. When the system starts, compressed air is transported into the pipeline through an air treatment system (including compressors, filters, oil - gas separators, etc.). In the pipeline, the compressed air forms a powerful air flow, which can push the materials (liquids or gases) in the pipeline to flow. During the process of the materials being pushed, they mix with the air to form a gas - material mixed flow and are guided to the target position.
The telescopic cylinder is a new - type cylinder composed of two - section cylinders and one - section oil pipeline. One of the cylinders is a sealed clamping cylinder, and the other cylinder is mainly used to lift and lower the oil pipeline for up - and - down telescoping, enabling the oil pipeline to reach the bottom of the oil tanker and achieving sub - liquid loading.
The new - type oil pipeline diversion head is submerged for sub - liquid loading. After the oil flows through the diversion head, it flows out along the length direction of the tank truck. It does not directly impact the bottom and the two side walls of the tank truck. The oil flow basically has no tumbling phenomenon, and the liquid level rises steadily. This reduces the friction between the oil flow and the tank truck wall and the air, greatly reducing the static electricity potential generated during loading.
A sealed device is set at the tank truck opening, which significantly reduces the evaporation of oil and gas. At the same time, an oil inlet pipe and an exhaust pipe are set on the sealed cover. After the loading work is completed, the oil pipeline and the main cylinder return to their original positions, and the exhaust pipe self - locks to prevent the back - flow of oil and gas from the recovery pipe.
The cylinder head, also known as the locking head, is used to prevent the piston and the oil pipeline from slipping downward after reaching the position. Two cylinders implement dual self - locking of air and machinery. It has high sensitivity and can generally work under an air pressure of 0.35 Mpa. It has a strong self - locking force and is not affected by air supply interruption and air leakage, ensuring safety and reliability.
With the progress of science and technology and the increase in environmental protection requirements, the development trend of pneumatic loading arms will place more emphasis on safety, efficiency, and environmental friendliness. In the future, there may be more pneumatic small loading arm products that integrate automation and intelligence to meet the needs of different industries and scenarios.
