The working principle of the large loading arm

A little knowledge about train crane tubes (fluid loading and unloading arms)? Train crane pipes can be divided into large crane pipes and small crane pipes. The small crane pipes are generally composed of fixed risers, horizontal pipes, vertical pipes, rotating joints, and torque balancing devices. The large crane pipes need to be equipped with crane pipe lifting, mobile mechanical devices, and locomotive traction devices.
When unloading oil, insert the loading and unloading crane tube into the tank car, start the vacuum pump to extract air from the pipeline, suck the oil into the upper crane tube, flow into the manifold, and unload the oil pump. After starting the unloading pump, the oil in the tank car can be transported to the oil storage tank to complete the unloading operation.
A multi body loading small crane tube is composed of a rotating joint, a front crane arm, a rear crane arm, and an oil guide cylinder. The connecting frame and sliding mechanism connect multiple sets of small crane tubes in parallel at the same cargo position into a whole. The connecting frame is connected to the upper end of the crane tube head, and the metal hose is connected to the upper end of the loading and unloading crane tube head. The sliding mechanism is composed of a support frame in the middle of the loading crane tube head and a guide rail on it, A connecting wheel frame with a shaft pin fixed on the crane tube and a guide wheel on the connecting frame are composed, and the guide wheel is sliding connected to the guide rail.
Petroleum products play a very important role in national economic construction and people's lives, and there are also problems of environmental pollution and economic losses in the transportation and storage of oil products. The issue of oil and gas volatilization has not yet received sufficient attention from people. Petroleum products contain volatile hydrocarbons, and transportation, loading and unloading vehicles and ships for petroleum products are one of the sources of emitted hydrocarbon pollution. For oil companies, whether they are car tankers or train tankers, there is the spraying, agitation, and displacement of light oil products, which pollutes the loading dock and the surrounding environment. At present, large domestic refining and chemical enterprises have carried out automatic transformation of train loading to improve the production capacity of finished oil, changing from the original manual loading form of small crane tubes to the centralized loading form of large crane tubes. The advantages of this form are that the trestle occupies a small area, requires less equipment investment, and has a fast loading speed (only a few minutes to load a tanker), which is easy to control and manage, and is conducive to future oil and gas recovery. With the development of modern control technology and computer technology, the control and management of railway crane tube loading has reached a new level, achieving automated control and networked management.