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Bringing along automatic cleanout inside pipe by teeth at rotational flow mouth, and technique for strengthening heat transfer

A technology of automatic cleaning and heat transfer enhancement, which is applied in the direction of cleaning heat transfer devices, heat transfer modification, non-rotating equipment cleaning, etc., can solve problems such as expensive manufacturing costs, complex structures, and loss of engineering value, and achieve reliable automatic cleaning, The effect of accelerating the rotation speed and solving the difficulty of starting

Inactive Publication Date: 2006-02-01
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex structure, if the helical teeth are installed on the smooth spiral twisted belt by bonding or welding, the manufacturing cost will be expensive and its engineering value will be lost; the difficulty of high-efficiency and cheap direct manufacturing technology has not yet been solved , cannot be applied in industrial production

Method used

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  • Bringing along automatic cleanout inside pipe by teeth at rotational flow mouth, and technique for strengthening heat transfer
  • Bringing along automatic cleanout inside pipe by teeth at rotational flow mouth, and technique for strengthening heat transfer

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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with accompanying drawings 1 , 2 , 3 and 4 .

[0012] In the figure 1. Heat transfer tube 2. Swirl tooth straight belt 3. Rotating shaft 4. Swirl bearing 5. Sliding bearing 6. Straight belt

[0013] 7. Swirl mouth 8. Power teeth 9. Auxiliary teeth

[0014] The automatic cleaning and heat transfer enhancement technology in the swirling straight belt tube is composed of a heat transfer tube 1, a swirling straight belt 2 and a rotating shaft 3. The swirl mouth-toothed straight belt 2 is made of the straight belt 6 with the swirl mouth 7 and the power teeth 8, and can also be made of the straight belt 6 with the swirl mouth 7, the power teeth 8 and the auxiliary teeth 9. The width B of the straight belt 6 is slightly smaller than the inner diameter D of the heat transfer tube 1, and the width ratio B / D is in the range of 0.70-0.95. The power teeth 8 and auxiliary teeth 9 are evenly arranged on ...

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Abstract

The spiral-flow mouth tooth straight band mounted in the heat transfer tube is composed of straight band and power tooth of spiral-flow mouth, on the straight band the auxiliary tooth can be set also. Under the retention guide action of power tooth and auxiliary tooth a portion of fluid in the tube can be axially flowed, another portion of fluid can be spirally flowed via spiral-flow mouth. Said invention can be extensively used in the shell-and-tube heat transfer equipment for automatically-cleaning tube scale and implementing heat transfer intensification.

Description

technical field [0001] The invention relates to the automatic cleaning and heat transfer enhancement technology of the swirling flow articulated straight belt tube, which is mainly aimed at the automatic descaling and anti-scaling and heat transfer enhancement of the tubes of the tube-and-tube heat exchanger. It is suitable for various shell and tube heat transfer equipment, such as heat exchangers, condensers, evaporators, etc., which run at a low flow rate in the heat transfer tube and need heat transfer enhancement or automatic cleaning of the dirt on the inner wall of the tube. Background technique [0002] Heat transfer equipment has the largest number of shell and tube heat exchangers. Among the shell and tube heat exchangers, the flow rate in the tube (0.5m / s-0.9m / s) is relatively low. The common feature of these devices is that the tubes are easy to scale and the convective heat transfer coefficient is low, so automatic cleaning, descaling and anti-scaling and heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/40F28F13/12F28G1/00
Inventor 俞天兰俞秀民彭德其蒋少青吴金香刘桂英支校衡
Owner HUNAN UNIV OF TECH
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