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Non-continuous outer trapezoid longitudinal rib tube

A discontinuous, longitudinal rib technology, applied in the field of discontinuous outer trapezoidal longitudinal rib tubes, can solve the problems of low manufacturing cost, strong heat transfer coefficient, large heat transfer area, etc., and achieve compact structure, high heat transfer coefficient, large ratio The effect of surface area

Pending Publication Date: 2016-07-13
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above technical problems existing in the existing outer longitudinal finned tubes, and to provide an outer finned tube with strong heat transfer coefficient, large heat transfer area, small flow resistance and low manufacturing cost

Method used

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  • Non-continuous outer trapezoid longitudinal rib tube
  • Non-continuous outer trapezoid longitudinal rib tube
  • Non-continuous outer trapezoid longitudinal rib tube

Examples

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Embodiment Construction

[0013] see figure 1 and Figure 4 , the present invention consists of a base pipe (1) and a trapezoidal cross-section longitudinal rib (2), a plurality of trapezoidal longitudinal ribs are evenly distributed in the peripheral direction of the base pipe, and mechanically formed with the base pipe, in the longitudinal direction of the base pipe, a plurality of discontinuous trapezoidal The longitudinal ribs are arranged in parallel or staggered rows, the structure and size of the trapezoidal longitudinal ribs outside the base pipe are consistent, and the interval length (5) between the upper and lower longitudinal ribs outside the base pipe is consistent.

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Abstract

The invention discloses a non-continuous trapezoid longitudinal rib tube.The longitudinal rib tube is formed by integrating a base tube (1) and non-continuous longitudinal ribs (2) with the trapezoid cross sections, a plurality of fins (2) are evenly arranged on the peripheral direction of the base tube (1) in an aligned or staggered mode in the longitudinal direction, and the longitudinal ribs and the base tube are mechanically formed.Compared with a common continuous longitudinal rib tube, the non-continuous trapezoid longitudinal rib tube has the advantages that metal material consumption is low, and the cost is saved.

Description

technical field [0001] The invention relates to a non-continuous external trapezoidal longitudinal fin tube, which is mainly suitable for longitudinal flow heat exchange of fluid in the range of laminar flow. Background technique [0002] As a high-efficiency heat exchange element, finned tubes are widely used in petroleum, chemical, HVAC, nuclear power and other fields. By adding fins on the side with larger heat transfer resistance, the heat transfer area is increased. Reduce the overall thermal resistance and enhance the heat exchange capacity of this side. There are many forms of fins, including ring ribs, spiral ribs, pin ribs, column ribs and longitudinal ribs, etc. Among them, longitudinal ribs have high heat transfer coefficient, large finning ratio, small pressure drop, good shock resistance and anti-vibration. Dust accumulation and other advantages have been developed rapidly this year, and it has been widely used in shell-and-tube heat exchangers, waste heat reco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/12F28F13/02
CPCF28F1/12F28F13/02
Inventor 郑明光郑文龙叶成赵青王文匡易武易冲
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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