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Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger

A technology for strengthening heat exchange and heat exchangers. It is applied in the directions of heat transfer modification, heat exchange equipment, lighting and heating equipment, etc. Fatigue damage and other problems, to avoid fatigue damage and improve heat transfer efficiency

Inactive Publication Date: 2010-06-16
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, after the heat exchanger is manufactured and installed, if the fluid medium or flow rate changes, one situation may be that the frequency and amplitude of the vibration of the fluid-induced heat exchange tube bundle are small, and there is no good heat exchange effect; another situation may be Due to the high frequency and amplitude of the fluid-induced vibration of the heat exchange tube bundle, the heat exchange tube bundle will quickly undergo fatigue damage

Method used

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  • Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger
  • Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger
  • Vibration inducing device for strengthening heat exchange of elastic tube bundle heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 , figure 2 with Figure 4 Among them, the vibration induction device used for strengthening heat exchange of the elastic tube bundle heat exchanger includes a water inlet pipe 6 and a pulsating flow pipe 1, both of which are connected with the pipeline valve 3; The floating masses 8 of the 9 tube bundles correspond to the water outlets 4 one by one, and the end pulsating flow generator 2 is installed on the pulsating flow tube 1 . One end of the pulsating flow tube 1 is fixed on the lower head 7, and the other end is suspended.

Embodiment 2

[0025] figure 1 , image 3 with Figure 5 Among them, the vibration induction device used for strengthening heat exchange of the elastic tube bundle heat exchanger includes a water inlet pipe 6 and a pulsating flow pipe 1, both of which are connected with the pipeline valve 3; The floating masses 8 of the 9 tube bundles correspond to the water outlets 4 one by one, and a pulsating flow generator 5 at the water outlet is installed on each water outlet 4 . One end of the pulsating flow tube 1 is fixed on the lower head 7, and the other end is suspended.

Embodiment 3

[0027] In this embodiment, the pulsating flow generator 2 at the end and the pulsating flow generator 5 at the water outlet are respectively installed on the pulsating flow pipe 1 and its water outlet 4, and the rest of the structure is the same as that of Embodiment 1 and Embodiment 2, and no longer repeat.

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Abstract

The invention discloses a vibration inducing device for strengthening the heat exchange of an elastic tube bundle heat exchanger. The vibration inducing device may have the vibration type, frequency and amplitude which are required by a heat exchanger bundle, improves the heat exchange efficiency and avoids damage to the heat exchanger bundle due to fatigue. The vibration inducing device comprises a water inlet tube and a pulse flow tube, wherein the water inlet tube and the pulse flow tube are both connected with a tube valve; the pulse flow tube is provided with a water outlet corresponding to floating mass block of the elastic heat exchanger bundle one by one; and a pulse flow generator is arranged on the pulse flow tube and / or the water outlet.

Description

technical field [0001] The invention relates to a vibration induction device for strengthening heat exchange of an elastic tube bundle heat exchanger. Background technique [0002] Shell-and-tube heat exchangers are widely used in energy, power, petrochemical and other industrial fields. The enhanced heat transfer technology of heat exchangers is of great significance to energy saving and consumption reduction. Among them, passive enhanced heat transfer technology is an important research direction at present because it does not require external high-quality energy input to achieve the purpose of enhanced heat transfer. [0003] The use of fluid-induced vibration of heat transfer elements to achieve enhanced heat transfer is a form of passive enhanced heat transfer, which can transform the strict prevention of fluid vibration induction in the heat exchanger into the effective use of vibration, so that the transmission elements can operate at low flow rates The convective he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F13/10
Inventor 张磊葛梦然
Owner SHANDONG UNIV
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