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
CN101403576AInactive Publication Date: 2009-04-08SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2009-04-08
Estimated Expiration
Not applicable · inactive patent

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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.
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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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