A cryogenic medium buffer type LNG loading and unloading arm flow channel structure

CN224434140UActive Publication Date: 2026-06-30ANSHAN YUHU FLUID EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANSHAN YUHU FLUID EQUIP CO LTD
Filing Date
2025-07-22
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing loading and unloading arm flow channel structure lacks effective buffering and flow guidance design, which causes turbulence when cryogenic liquefied natural gas flows at high speed in the pipeline, increasing pipeline wear.

Method used

A cryogenic medium buffer type LNG loading and unloading arm flow channel structure was designed, including an inner wall pipe, a vertical feed pipe, a buffer cavity, a buffer surface, a guide plate, and a baffle plate. The buffer cavity and the guide plate guide the gas to flow smoothly, and the baffle plate converts kinetic energy into heat energy, reducing wear on the pipe wall. The baffle plate is also easy to replace through a positioning and installation mechanism.

Benefits of technology

Effective buffering and flow diversion reduce wear on pipelines caused by liquefied natural gas, increase the service strength of loading arms, and facilitate quick replacement of baffles.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a cryogenic medium buffered LNG loading and unloading arm flow channel structure, relating to the field of loading and unloading arm technology. It includes an loading arm and a column fixed to the outer wall of the loading arm. The loading arm includes an inner wall pipe and a vertical feed pipe connected to the inlet of the inner wall pipe. A buffer chamber is provided at the lower end of the vertical feed pipe, and a buffer surface is provided between the buffer chamber and the inner wall of the vertical feed pipe. Multiple axially uniformly distributed guide plates are fixed at the upper end of the vertical feed pipe. A baffle plate slides through the buffer chamber, and a positioning and installation mechanism is provided between the baffle plate and the inlet of the vertical feed pipe to limit the position of the baffle plate. This utility model can guide liquefied natural gas smoothly into and out of the buffer chamber during transportation, avoiding eddies and impacts. Simultaneously, the baffle plate creates turbulent flow of the natural gas, converting some kinetic energy into heat and dissipating internal energy, reducing wear on the pipe wall during rapid natural gas flow and improving the service strength of the loading and unloading arm.
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