Gas inlet uniform distribution device for plate heat exchanger

Abstract

The invention provides a gas inlet uniform distribution device for a plate heat exchanger. The gas inlet uniform distribution device comprises an inlet connecting pipe and a plate bundle; the inlet connecting pipe is eccentrically arranged on a pipe tank; the plate bundle is mounted below the pipe tank; one end, farer from the inlet connecting pipe, of two ends of the plate bundle is a plate bundle farthest end; a plurality of flow guide components arranged at intervals are mounted in the inlet connecting pipe; each flow guide component is a flow guide plate comprising a drainage section, a transition section and a flow guide section; the two ends of the transition section are separately integrally connected with the drainage section and the flow guide section in a tangential manner; the drainage section is fixedly connected onto the inner wall of the inlet connecting pipe; the flow guide section is positioned in the pipe tank; and the tail end of the flow guide section is inclined tothe farthest end of the plate bundle. The gas inlet uniform distribution device solves the problem that a connecting pipe is eccentrically arranged, and the flow area of the plate bundle is larger, sothat the gas is non-uniformly distributed, enhances the heat exchange performance, and reduces the possibility of thermal expansion deformation and cracking of the plate bundle. The gas inlet uniformdistribution device has the advantages of simple structure, low cost, and easiness in processing, and improves the operation performance and the economic performance of the device.

Description

technical field [0001] The invention belongs to the technical field of thermal energy engineering fluid mechanics and the application of plate bundle heat exchangers, and relates to a gas inlet uniform distribution device for plate heat exchangers. Background technique [0002] Welded plate heat exchanger is a high-efficiency and compact heat exchanger with many advantages such as high heat transfer coefficient, small pressure loss, compact structure, and convenient maintenance. In recent years, due to the flexible structure and the improvement of large-scale manufacturing technology, welded plate heat exchangers have been more and more widely used in the fields of gas-gas, gas-vapor and gas-liquid heat exchange. Due to the limitation of on-site installation space, or the economical or structural limitations of the nozzle layout, the medium inlet nozzle of the welded plate heat exchanger cannot be centrally designed on the tube box, but needs to be arranged eccentrically. ...

AI Technical Summary

Problems solved by technology

This method can reduce the heat transfer dead zone at the end of the plate bundle, but it makes the gas distribution under the nozzle poor, that is, in order to solve the heat transfer dead zone at the end, a new dead zone appears under the nozzle

It can be seen that for the traditional distribution method, the distribution effect between the plate bundle below the nozzle and the plate bundle far away from the nozzle cannot be achieved at the same time.

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