Sheet-like series shell-and-tube type heat exchanger

Abstract

The invention discloses a sheet-like series shell-and-tube type heat exchanger. A shell is provided with a shell pass liquid inlet and outlet flange, an end cover of the shell is provided with a shell penetrating adapter, the shell is internally provided with a tube pass component and a baffle plate assembly, the tube pass component is formed in the manner that a plurality of parallel sheet-like concentric circular coils are connected with an adapter tube in series through welding or high-pressure special cutting ferrule elbows, and the baffle plate assembly is composed of a plurality of parallel pin rib spoilers, positioning rods for fixing the multiple pin rib spoilers, short and long positioning rod sleeves arranged on the positioning rods in a sleeving manner and used for limiting the pin rib spoilers and locking nuts installed at the two ends of each positioning rod and used for positioning and locking the short and long positioning rod sleeves. The sheet-like series shell-and-tube type heat exchanger can make the heat exchanger structure more flexible and compact, the heat exchange performance is more efficient, and the maintenance is more convenient on the premise of effectively achieving the pressure resistance of a high-pressure hydrogen pipe pass; and through spoiler design of the baffle plate assembly, a fluid boundary layer is broken to strengthen the heat transfer effect.

Description

technical field [0001] The invention belongs to the technical field of shell-and-tube heat exchangers, and in particular relates to a shell-and-tube heat exchanger connected in series. Background technique [0002] At the hydrogen refueling station, during the rapid filling of high-pressure hydrogen by the hydrogen refueling machine to the on-board hydrogen system of the fuel cell vehicle, if the rapid filling of hydrogen without temperature control measures will be caused by the compression heat and the Joule-Thompson effect during the hydrogen filling process, As a result, the temperature in the gas cylinder in the on-board hydrogen system rises rapidly, far exceeding the allowable temperature range of the hydrogen storage cylinder, which brings great potential safety hazards. Therefore, before hydrogen injection, it is usually necessary to pre-cool the high-pressure hydrogen through a heat exchanger. [0003] Hydrogen refueling stations need heat exchangers with high saf...

AI Technical Summary

Problems solved by technology

However, commercial heat exchangers suitable for pressure on the market, including shell-and-tube heat exchangers, spiral tube heat exchangers, and various heat exchangers modified on this basis, are difficult to achieve. At the same time, it meets the relevant requirements of high-pressure hydrogen for heat exchange and precooling in hydrogenation stations, so it is urgent to propose a new type of high-pressure resistant compact high-efficiency heat exchanger to solve the problem of hydrogenation precooling

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