Mobius type heat exchanger

Abstract

The invention relates to a Mobius type heat exchanger which comprises a pipeline and connector groups. The pipeline is composed of two beams of mutually independent heat exchange pipelines, the two beams of mutually independent heat exchange pipelines are respectively connected with a plurality of connector groups, the outer parts of the connector groups are rotatably connected with rotatable pipelines, and each connector group is composed of four connectors which are connected with one another; the rotatable pipelines are arranged outside the connectors, fixed heat exchange pipelines are arranged inside the connectors, and the rotatable pipelines are connected with the heat exchange pipelines through small balls; and each connector adopts a coil and a magnet adhered to the corresponding position of the rotatable pipeline, so that the rotatable pipeline is controlled to rotate across the air. The heat exchanger is free of welding on the pipelines, good in mechanical property, not prone to accumulation of sundries, high in heat exchange efficiency and small in occupied area.

Description

technical field [0001] The invention relates to a heat exchanger for a transport ship, in particular to a heat exchanger for a liquefied natural gas (LNG) system Background technique [0002] Existing heat exchangers basically use limited channel space, and use tight channel layout to maximize heat exchange efficiency in the limited space. , this type of heat exchanger can basically meet the design requirements. [0003] On the one hand, due to the large number of equipment on the LNG carrier, the heat exchanger is required to be designed as small as possible. In addition, the general temperature of LNG during storage is about -160°C. For this ultra-low temperature medium heat exchange, conventional Heater equipment is extremely easy to damage, and the damage modes mainly include the following aspects: the yield performance of the pipeline, in the ultra-low temperature environment, the pipeline becomes brittle and loses elasticity, the environmental factors on board or the ...

AI Technical Summary

Problems solved by technology

[0003] On the one hand, due to the large number of equipment on the LNG carrier, the heat exchanger is required to be designed as small as possible. In addition, the general temperature of LNG during storage is -160 ℃, for the ultra-low temperature medium heat exchange, the conventional heat exchanger equipment is very easy to damage, the damage mode mainly includes the following aspects: the yield performance of the pipeline, in the ultra-low temperature environment, the pipeline becomes brittle and loses elasticity, and the Environmental factors or vibration of main equipment and other equipment cause the heat exchanger to be affected by vibration, and the brittle heat exchanger pipe is prone to rupture, and once a pipe ruptures, it means that the entire heat exchanger has failed; the welding fatigue performance of the pipe, in the exchange During the thermal process, the temperature range of the pipeline is extremely large, resulting in a huge temperature difference stress. At this time, the pipeline continues to expand with heat and contract with cold, and the welding position is extremely prone to fatigue fracture

[0004] In addition, existing heat exchangers use channels to add baffles or set grooves to generate turbulent flow and improve heat exchange efficiency, but this solution can Turbulent flow is generated, but the improvement of the heat exchange efficiency of the channel is extremely limited, and at the same time, the manufacturing cost of the heat exchanger is greatly increased

[0005] To sum up, the current heat exchanger devices used for LNG ships have huge size, low heat exchange efficiency, easy damage, easy accumulation of debris in pipelines, Therefore, it does not meet the needs of ultra-low temperature heat exchange

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