H-shaped finned pipe formed by combining turbulence rods and delta vortex generators

A vortex generator, triangular technology, applied in the field of heat exchange and heating equipment, to achieve the effect of improving convective heat transfer coefficient, reducing pressure drop loss, and increasing disturbance

Inactive Publication Date: 2018-08-03
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • H-shaped finned pipe formed by combining turbulence rods and delta vortex generators
  • H-shaped finned pipe formed by combining turbulence rods and delta vortex generators
  • H-shaped finned pipe formed by combining turbulence rods and delta vortex generators

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Embodiment Construction

[0025] The present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 , figure 2 and image 3 As shown, an H-shaped finned tube combined with a spoiler bar and a triangular vortex generator includes a base tube 1 and several groups of H-shaped fin groups 2 set in parallel on the base tube 1, and the H-shaped fins The sheet group 2 is composed of two fins; each group of H-shaped fin group 2 is located on the two sides of the base pipe 1. Several pairs of spoiler rods 3 are symmetrically arranged on the windward side, and a pair of triangular vortex generators 4 are symmetrically arranged on the leeward side. , the windward side fins on both sides of the base pipe 1 are axially penetrated by the spoiler rod. The present invention cooperates with the base tube and the fin, and the fluency of the straight channel type flue gas channel formed by the base tube, the fin, the spoiler ro...

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Abstract

The invention discloses an H-shaped finned pipe formed by combining turbulence rods and delta vortex generators. The H-shaped finned pipe comprises a base pipe and a plurality of parallel H-shaped finsets, and the base pipe is sleeved with the H-shaped fin sets. Each H-shaped fin set comprises two fins. Multiple pairs of turbulence rods are symmetrically arranged on the windward side of the two fins, located on the two sides of the base pipe, of each H-shaped fin set, wherein one pair of delta vortex generators is arranged on the leeward side symmetrically. The turbulence rods axially penetrate through the fins on the windward side and on the two sides of the base pipe. The included angle of the incoming-flow directions of the delta vortex generators is 30 degrees-40 degrees. When smoke flows through the fins, the turbulence rods and the delta vortex generators conduct induction to generate secondary flow, disturbance is generated to fluid, and thus the purpose of heat exchange enhancement is achieved. The turbulence rods disturb airflow, the development of a boundary layer is prevented, pressure drop loss is lowered, deposition of particles in smoke on the heat exchange surface is reduced, and long-time efficient operation of a heat exchanger is facilitated.

Description

technical field [0001] The invention relates to an H-shaped finned tube, in particular to an H-shaped finned tube combined with a spoiler rod and a triangular vortex generator, which is suitable for various types of heat exchange in industries such as petroleum, chemical industry, metallurgy, electric power, and energy. and heating equipment. Background technique [0002] With the sustained and rapid development of my country's economy, the problem of energy supply shortage has become increasingly prominent, and energy conservation, emission reduction and consumption reduction have become the inevitable requirements of my country's economic and social development. As an important part of power, petroleum, chemical, refrigeration, metallurgy, and even aviation, rocket and other industrial processes, heat exchangers are of great significance for their safe and efficient operation. In various heat exchange equipment, increasing the heat exchange area through fins is a common w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/30F28F9/24
Inventor 刘继平邢张梦刘明马其然严俊杰
Owner XI AN JIAOTONG UNIV
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