Case-type multi-shell-pass countercurrent speedup type shell and tube heat exchanger

A shell-and-tube heat exchanger, multi-shell-side technology, applied in the direction of heat exchanger type, heat exchanger shell, indirect heat exchanger, etc., can solve the problem of low heat transfer coefficient of heat exchanger and low fluid velocity on the shell side , large diameter of the shell, etc., to achieve the effect of compact arrangement, reduction of charging amount, and reduction of heat transfer temperature difference

Inactive Publication Date: 2010-12-29
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the single-shell-side shell-and-tube heat exchangers that are widely used at present, when the heat transfer capacity of the heat exchanger is large, the diameter of the shell is large and the flow cross-section of

Method used

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  • Case-type multi-shell-pass countercurrent speedup type shell and tube heat exchanger
  • Case-type multi-shell-pass countercurrent speedup type shell and tube heat exchanger
  • Case-type multi-shell-pass countercurrent speedup type shell and tube heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1

[0034] Such as figure 1 As shown, the box-shell type multi-shell pass countercurrent speed-increasing shell-and-tube heat exchanger includes a shell 5, two ends of the shell are provided with a tube plate Ⅰ3 and a tube plate Ⅱ8, and the tube box 2 is connected to the outside of the tube plate Ⅰ3 and A partition board is arranged inside, an end cover 11 is arranged at the other end of the shell, and a heat exchange tube 6 is arranged in the shell. The heat exchange tube is a straight tube heat exchange tube, and the heat exchange tube penetrates through the tube plate I3 and the tube plate II8. It is connected with the pipe box and the end cover at both ends. The pipe box 2 is provided with a pipe interface Ⅰ1 and a pipe interface Ⅱ9, and a pipe interface Ⅲ4 and a pipe interface Ⅳ10 are respectively arranged on the upper and lower parts of the casing. The heat exchanger shell has an upper circle and lower structure, that is, the upper part is a semi-cylindrical...

Example Embodiment

[0036] Example 2

[0037] Such as figure 2 As shown, this embodiment is based on the structure of the embodiment, and the heat exchange tube is a U-shaped tube.

Example Embodiment

[0038] Example 3

[0039] Such as image 3 As shown, this embodiment is image 3 Based on the structure shown, a lateral speed increasing disturbance baffle 12 is provided in the housing 5. The shape of the lateral speed increasing perturbation baffle is the same as the cross-sectional shape of the fluid flow channel outside the tube formed in the shell. One end of the lateral speed increasing baffle is left with a channel notch, and a number of supports are provided on the baffle surface. The hole of the heat exchange tube.

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Abstract

The invention provides a case-type multi-shell-pass countercurrent speedup type shell and tube heat exchanger. The heat exchanger comprises a shell (5), wherein one end of the shell is provided with a tube plate I (3); a tube case (2) is connected outside the tube plate I (3), and a baffle is arranged inside the tube case; the other end of the shell is provided with an end cover (11); a heat exchange tube (6) is arranged in the shell; the shell of the heat exchanger has a round-upside square-downside structure or a square-upside round downside structure; at least one layer of vertical countercurrent speedup guide plate (7) is arranged in the shell; and the inner part of the shell is separated into at least two shell passes to ensure that the number of pass of fluid outside a tube is the same as that of fluid in the tube, and the fluid outside the tube and the fluid in the tube have opposite flowing dictions along the axial direction. The heat exchanger can make the direction of the fluid along the axial direction in the shell pass in the shell and tube heat exchanger opposite to that of the fluid in the tube, make the fluids quickly flow for heat exchange, reduce heat transfer temperature difference of the fluids, improve heat exchange efficiency, and realize synchronous composite utilization of double heat sources. The special shell structure ensures more compactness in heat exchange tube arrangement, can effectively reduce the volume of the heat exchanger, and reduces the filling amount of a refrigerant.

Description

technical field [0001] The invention relates to the field of processing and manufacturing of heat exchangers, in particular to a shell-and-tube heat exchanger with multi-shell side countercurrent speed-up. Background technique [0002] Shell and tube heat exchangers are widely used in chemical industry, food, refrigeration and air conditioning and other fields. Many parallel tubes are arranged in a cylindrical shell to allow two fluids to flow through the space inside the tube and the space outside the tube and exchange heat. . For the single shell-side shell-and-tube heat exchangers widely used at present, when the heat transfer capacity of the heat exchanger is large, the diameter of the shell and the cross-section of the single-shell side are large, resulting in a low velocity of the shell-side fluid, resulting in heat transfer. The overall heat transfer coefficient of the device is not high, and the heat transfer efficiency is low. Contents of the invention [0003] ...

Claims

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Application Information

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IPC IPC(8): F28D7/16F28F9/00F28F9/02F28F9/22F28F9/24
Inventor 周光辉刘寅
Owner ZHONGYUAN ENGINEERING COLLEGE
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