Liquid loading-unloading crane pipe with rigid gaseous phase pipeline

Abstract

The invention discloses a liquid loading-unloading crane pipe with a rigid gaseous phase pipeline. The liquid loading-unloading crane pipe comprises a liquid phase inner arm pipe, a liquid phase outerarm pipe and a liquid phase vertical pipe, wherein an outlet end of the liquid phase inner arm pipe is connected with one end of the liquid phase outer arm pipe through a first rotary joint, the other end of the liquid phase outer arm pipe is connected with the liquid phase vertical pipe, and the liquid phase vertical pipe is provided with a gaseous phase vertical pipe in parallel or nested mode;the gaseous phase vertical pipe is connected with a gaseous phase outer arm pipe, the gaseous phase outer arm pipe is communicated with a gaseous phase inner arm pipe, the gaseous phase inner arm pipe and the gaseous phase outer arm pipe are rigid pipelines, a circulation channel formed by the gaseous phase inner arm pipe and the gaseous phase outer arm pipe tends to descend towards the gaseous phase vertical pipe, and a second rotary joint with a rotary center coinciding with an extending line is arranged on the extending line of a rotating axis of the first rotary joint; and the gaseous phase outer arm pipe is communicated with the gaseous phase inner arm pipe through the second rotary joint. The gaseous phase inner arm pipe, the gaseous phase outer arm pipe and the rigid connection mode between the gaseous phase inner arm pipe and the gaseous phase outer arm pipe cannot form a drooping U-shaped section in the middle of the channel, and the defect that flexible connection easily forms the drooping U-shaped section in the middle of the channel to accumulate condensate is overcome.

Description

technical field [0001] The invention relates to a liquid loading and unloading crane, in particular to a liquid loading and unloading crane with a rigid gas phase pipeline. Background technique [0002] The crane tube is a special equipment in the process of fluid loading and unloading in the petrochemical industry, also known as the fluid loading and unloading arm. It uses rotary joints to connect rigid pipes and elbows to realize the movable equipment for transporting liquid media between trains, car tankers and trestle storage and transportation pipelines. It has the characteristics of high safety, flexibility and long life. Common crane tubes include liquid phase inner arm tubes, liquid phase outer arm tubes, and liquid phase vertical tubes. The liquid phase inner arm tube and the liquid phase outer arm tube can be rotated relative to each other to change the angle between them, so as to adjust the position flexibly. The loading and unloading crane pipes used for lique...

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