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A shell and tube heat exchanger

A tube-and-tube heat exchanger and heat exchange tube technology, which is applied to the types of heat exchangers, heat exchanger shells, indirect heat exchangers, etc., can solve the problems of shell dead volume, easy leakage, etc., and achieve reduction Effect of small dead volume and reduced incidence of leakage

Active Publication Date: 2017-06-30
ENN ENVIROTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a tube-and-tube heat exchanger, which can solve the technical problems that dead volume or leakage easily occurs in the shell

Method used

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  • A shell and tube heat exchanger
  • A shell and tube heat exchanger
  • A shell and tube heat exchanger

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Embodiment Construction

[0026] The following notes are provided in the embodiment of the present invention.

[0027] The inclination angle of the baffle: the angle between the plane of the baffle and the axis of the shell after the baffle rotates along its radius.

[0028] Post-expansion connection method: When the pipe fitting is inserted into the corresponding hole, there is a gap between the outer wall of the pipe fitting and the inner wall of the hole. The hole reaming process makes a tight fit between the pipe fitting and the hole. Wherein, the expansion device may be a mechanical expansion device (expander) or a hydraulic expansion device (expander).

[0029] Leakage phenomenon: There is a certain gap between adjacent baffles during the lapping process. In this way, when the fluid in the shell flows, a part of the fluid will flow regularly along the preset baffle channels, and another part of the fluid will leak into the next area through the gap, causing the heat exchange tubes passing throu...

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PUM

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Abstract

The invention discloses a tube-and-tube heat exchanger, relates to the technical field of heat exchange, and can solve the technical problem that a dead volume or a leakage phenomenon easily occurs in a casing. The shell of the heat exchanger is provided with a spiral passage and heat exchange tubes. The spiral passage is formed by a baffle or connected in sequence by at least two baffles. There are at least A leakage reduction cylinder, the leakage reduction cylinder is located at the axis of the casing or distributed around the axis of the casing in the circumferential direction. The heat exchanger can reduce the incidence of dead volume in the shell or leakage flow in the gap between adjacent baffles.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a tube-and-tube heat exchanger. Background technique [0002] With the rapid development of economy and industry, countries around the world are facing the problem of energy shortage, so how to efficiently use existing energy is the focus of people's increasing attention. Among them, the heat exchanger is an energy-saving device that realizes heat transfer between materials between two or more fluids at different temperatures. It transfers heat from a higher fluid to a lower temperature fluid and improves energy utilization. One of the main equipment of the rate. At present, the widely used heat exchanger is the tube-and-tube heat exchanger, which is generally composed of a shell, a heat exchange tube bundle, a tube sheet, a baffle (baffle), and a tube box. [0003] When the baffle in the shell is a spiral baffle, the fluid in the shell will flow in the spiral channel, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/00F28F9/24
Inventor 宋庆峰程乐明朱邦阳李成学
Owner ENN ENVIROTECH CO LTD