Gravity type gas-liquid separator applied to LNG buffer tank

By designing a gravity gas-liquid separator applied to LNG buffer tanks, the unique shape and position setting of the liquid-gas mixture entry pipe and the gas natural gas discharge pipe are used, and combined with the gravity properties of the liquid-gas natural gas, efficient gas-liquid separation is achieved, solving the problem of poor gas-liquid separation in the prior art, and improving the safety and practicality of the system.

CN222700254UActive Publication Date: 2025-04-01HEFEI WAL FUEL SYST CO LTD
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Patent Information

Application Number
CN202421464373.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-25
Publication Date
2025-04-01
Estimated Expiration
2034-06-25

AI Technical Summary

Technical Problem

In the existing automotive LNG supply system, there is a lack of efficient gas-liquid separator structure, which causes liquid natural gas to enter the buffer tank in extreme cases, resulting in safety problems such as damage to the buffer tank and engine stalling.

Method used

A gravity gas-liquid separator applied to LNG buffer tanks is designed. Through a liquid-gas mixture in a unique shape and position, it is designed to achieve efficient gas-liquid separation through a liquid-gas mixture entry tube and a gas natural gas discharge tube.

Benefits of technology

The gas-liquid separator is simple in structure and low in cost. It can effectively prevent liquid natural gas from entering the composite buffer tank, prevent damage to the buffer tank, and improve the safety and practicality of the system.

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Abstract

The utility model is applicable to the technical field of LNG (Liquefied Natural Gas) buffer tanks, in particular to a gravity type gas-liquid separator applied to an LNG buffer tank, which comprises an LNG buffer tank main body, and two sides of the top surface of the LNG buffer tank main body are respectively connected with a liquid-gas mixture inlet pipe and a gaseous natural gas discharge pipe. The LNG buffer tank has the following beneficial effects that after natural gas in a gas-liquid mixed state enters the LNG buffer tank main body, the gas-liquid mixed state enters the LNG buffer tank main body through the liquid-gas mixture inlet pipe and the gaseous natural gas outlet pipe which are arranged in unique shapes and positions and are matched with the attribute of the gravity of the liquefied natural gas; according to the gas-liquid separation device, the natural gas in a gas-liquid mixed state can be subjected to efficient gas-liquid separation treatment, and the gas-liquid separation structure is simple in structure and low in cost, so that the situation that ultralow-temperature liquefied natural gas enters the composite material buffer tank to cause damage to the composite material buffer tank can be effectively avoided, and the service life of the composite material buffer tank is prolonged. And the practicability of the gravity type gas-liquid separator applied to the LNG buffer tank is improved.
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