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Shell type heat exchanger for one third sector shaped helical baffle plate

A shell-and-tube heat exchanger and helical baffle technology, which can be used in heat exchanger types, indirect heat exchangers, lighting and heating equipment, etc., can solve problems such as difficulty in marking and positioning and affecting the popularization and application of baffles. , to achieve the effect of convenient design, improved strength conditions, and reduced layer spacing

Inactive Publication Date: 2009-04-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since a large number of shell-and-tube heat exchangers use the most compact regular triangular arrangement of tube bundles, this makes it difficult to mark and position inclined tube holes on 1 / 4 elliptical / fan-shaped baffles. Affected the popular application of this type of baffle

Method used

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  • Shell type heat exchanger for one third sector shaped helical baffle plate
  • Shell type heat exchanger for one third sector shaped helical baffle plate
  • Shell type heat exchanger for one third sector shaped helical baffle plate

Examples

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Embodiment

[0020] Example: such as Figure 1-6 As shown, the present invention includes a cylindrical shell 1, a tube bundle 2, a left tube plate 31, a right tube plate 32, a fluid inlet joint 5, a fluid outlet joint 6, and the left tube plate 31 and the right tube plate 32 are concentrically arranged and welded on At both ends of the cylindrical shell 1, each tube of the tube bundle 2 penetrates through the left tube plate 31, and then protrudes from the right tube plate 32, and the end of each tube is welded or expanded with the tube plate; The fluid inlet connecting pipe 5 and the fluid outlet connecting pipe 6 are respectively arranged on the sides of the two ends of the cylindrical housing 1 in order to facilitate the uniform distribution of the fluid after entering the housing and the convenience of collecting the fluid; it also includes several baffles 4, Each baffle 4 is obliquely arranged in the cylindrical shell 1, and each baffle 4 is composed of an elliptical curved side and ...

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Abstract

A tubular heat exchanger with a trisection sector helix baffle plate relates to the technical field of tubular heat exchangers with helix baffle plates which are arranged for tubes in a regular triangle. Tube plates are concentrically arranged and welded at two ends of a cylindrical shell. The tube plate is divided into three pieces of trisection zones for symmetrically arranging tubes. A plurality of baffle plates are sequentially and obliquely arranged inside the cylindrical shell. Every baffle plate is composed of an oval-shaped curved edge and two straight edges which are symmetric to the semi minor axis of the oval, wherein, the two straight edges are respectively positioned in the natural intervals of the tube bundles. The semi minor axis of the oval which is tangent to the baffle plate is taken as the base line of the baffle plate. The base line is vertical to the axes of the shell and superposed with a central line of pores of tubes arranged in a positive triangle included in the baffle plate, and the front edge of the back baffle plate in two neighboring baffle plates is connected with the back edge of the front baffle plate. The tubular heat exchanger realizes high heat exchange efficiency, reduces the resistance loss and is suitable for the tubes arranged in the positive triangle.

Description

technical field [0001] The invention relates to a shell-and-tube heat exchanger with spiral baffles, in particular to the technical field of a shell-and-tube heat exchanger with pipes arranged in an equilateral triangle. Background technique [0002] The shell and tube heat exchanger is still the mainstream type of heat exchange equipment because of its simple structure and high pressure. Although the commonly used bow-shaped baffles are simple to manufacture, they have disadvantages such as flow dead zone, large flow resistance, and large tube bundle support span at the gap, which is easy to induce vibration damage, etc., thus giving birth to many new tube bundle support solutions. Spiral baffles are one of them. Theoretically, the spiral baffle is a curved surface, which is difficult to manufacture. At present, there is an improvement plan for 1 / 4 ellipse / fan-shaped spiral baffles. Each layer of baffles is composed of 4 pieces of 1 / 4 ellipse / fan-shaped baffles. The conne...

Claims

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Application Information

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IPC IPC(8): F28D7/10
Inventor 陈亚平
Owner SOUTHEAST UNIV
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