Oblate staggered pipe for heat exchanger

Abstract

The invention belongs to the technical field of chemical equipment manufacturing. In order to overcome the defect of low heat transfer rate in a traditional heat exchanger, the invention discloses an oblate staggered pipe for the heat exchanger, which is formed by sequentially connecting a flat pipe, a circular pipe, a flat pipe, a flat pipe, a circular pipe and a flat pipe, the length of each pipe is identical, the two flat pipes adjacent to the circular pipes are mutually perpendicular and shaped like a cone and gradually transition to the adjacent circular pipes, the two adjacent cone-shaped flat pipes transition to the maximum sections of each other in parallel, with identical corresponding sizes, and the maximum section perimeter of each flat pipe is identical to the perimeter of each circular pipe. The oblate staggered pipe is suitable for a fixed pipe plate type heat exchanger, a U-shaped pipe type heat exchanger or a floating head type heat exchanger, complex flow taking a wave mode as a main characteristic is generated in fluid in a pipe side and a shell side, pure counter flow is formed inside and outside a heat exchanger pipe, stronger agitation is achieved due to a larger impulsive force particularly at the changing position of the pipe shape so as to form staggered turbulence, thereby a heat transfer process is reinforced to a larger extent. Moreover, the surface of the pipe wall can be automatically cleaned under the action of a medium in the shell side and scales are difficult to form.

Description

1. Technical field [0001] The invention belongs to the technical field of chemical equipment manufacturing, and in particular relates to an oblate cross tube used for a heat exchanger. 2. Background technology [0002] In today's world, due to the rapid development of economy and industry, countries all over the world are generally facing the problem of energy shortage. The development of new energy and how to efficiently use existing energy have attracted widespread attention from all countries in the world. Due to the wide application of heat exchangers in industrial production, improving the efficiency of heat exchangers, enhancing heat transfer, and researching new technologies for enhancing heat transfer have become the focus of increasing attention. At present, the used heat exchange tubes are divided into round tubes and flat tubes in terms of cross-sectional shape, and smooth tubes and threaded tubes in terms of extension forms. These heat exchange tubes with differe...

AI Technical Summary

Problems solved by technology

At present, the used heat exchange tubes are divided into round tubes and flat tubes in terms of cross-sectional shape, and smooth tubes and threaded tubes in terms of extension forms. These heat exchange tubes with different structures have their own advantages, but in the exchange The thermal efficiency and the utilization of materials still need to be further improved

Images