Low-temperature land fluid assembly and disassembly arm

Abstract

The invention relates to a low-temperature land fluid assembly and disassembly arm which is provided with a vertical column, a liquid phase arm and a gas phase arm, wherein the liquid phase arm and the gas phase arm are installed on the vertical column and both comprise an inner arm, an outer arm and a vertical pipe; the inner arm is connected with the vertical column by a rotating joint, the outer arm is connected with the inner arm by a rotating joint, and the outer arm is connected with the vertical pipe by a rotating joint; the liquid phase arm and the gas phase arm are arranged juxtaposedly up and down; a low-temperature valve for vehicle assembly is arranged near the inner wall end of the outer arm; the front end of the low-temperature valve is provided with a blowing device for replacement; and each rotating joint is provided with a nitrogen blowing mechanism. A blowing system for replacement can blow residues in the assembly and disassembly arm to a torch or a recycling deviceby using nitrogen in a nitrogen pipeline and ensures the safety of staffs and an assembly and disassembly device. The nitrogen blowing mechanisms arranged on the rotating joint enable all parts to uniformly shrink under the working condition of low temperature and solve the problem of low-temperature seal; and the nitrogen charged into the rotating joints enables a roller path to be always dry inthe whole assembly and disassembly process and ensures that the water in the air can not damage the roller path due to icing in the roller path and the rotation is flexible.

Description

technical field [0001] The invention relates to a fluid loading and unloading device, in particular to a low-temperature land fluid loading and unloading arm. Background technique [0002] The low-temperature land-use loading arm (low-temperature crane tube) is specially used for loading and unloading low-temperature medium tank trucks. Each part of the rotary joint shrinks under low-temperature working conditions, and the sealing surface is deformed unevenly, so the low-temperature sealing performance cannot be guaranteed. In addition, during the entire loading and unloading process, the moisture in the air will not freeze in the raceway and damage the raceway, making the rotation of the rotary joint inflexible. Contents of the invention [0003] The technical problem to be solved by the present invention is to address the deficiencies of the prior art, and propose a low-temperature land-use fluid loading and unloading arm with uniform shrinkage of each part under low-te...

AI Technical Summary

Problems solved by technology

Each part of the rotary joint shrinks under low-temperature working conditions, and the sealing surface is deformed unevenly, so the low-temperature sealing performance cannot be guaranteed

In addition, during the entire loading and unloading process, the moisture in the air will not freeze in the raceway and damage the raceway, making the rotation of the rotary joint inflexible

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