Baffle plate assembly of U-tube heat exchanger and method for fixation and sealing of baffle plate assembly
A baffle, heat exchanger technology, applied in the direction of heat exchanger sealing device, heat exchanger type, heat exchanger shell, etc., can solve the problem of reducing the thermal efficiency of the heat exchanger, and achieve easy cleaning and replacement, and easy disassembly. Effect
Active Publication Date: 2020-02-18
YANSHAN UNIV
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- Application Information
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Problems solved by technology
However, part of the fluid in the U-shaped tube heat exchanger directly passes through the gap between the baffle plate and the inner wall of the cylinder, causing a short circuit and reducing the thermal efficiency of the heat exchanger. This is a long-standing technical problem of the U-shaped tube heat exchanger.
Method used
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[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
[0028] see Figure 1 to Figure 4 , the specific structure of an embodiment of a U-tube heat exchanger baffle assembly proposed by the present invention is given. The baffle assembly includes a first baffle 1 , a second baffle 2 , a tie rod 3 , a support tube 4 and an O-ring 5 .
[0029] In the baffle assembly, except that the baffles on the upper and lower sides near one end of the U-shaped elbow area are the second baffles, the rest of the baffles are the first baffles, and the baffles on the upper side ...
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The invention provides a baffle plate assembly of a U-tube heat exchanger. The baffle plate assembly comprises first baffle plates and second baffle plates which are vertically and alternately arranged on heat exchange tubes, pull rods which penetrate through inner sides of edges of the first baffle plates and the second baffle plates, as well as supporting tubes which are disposed between each first baffle plate and a tube sheet, between every two first baffle plates, between each first baffle plate and each second baffle plate as well as between every two second baffle plates and sleeve thesurfaces of the pull rods, wherein the second baffle plates are located on upper and lower sides of one end of a U-shaped bend area of the heat exchange tubes; one ends of the pull rods are fixed in the tube sheet, and the other ends of the pull rods are fixedly connected to the end parts of the second baffle plates by nuts respectively. The invention also provides a method for fixation and sealing of the baffle plate assembly. The method comprises the steps of fixing the first and second baffle plates, installing the heat exchange tubes to form a tube bundle, enabling the tube bundle to get into a cylinder, locking the nuts, and the like. The assembly and the method provided by the invention have the beneficial effects that the baffle plates of the U-tube heat exchanger can be fixed on the cylinder and sealing between the U-tube heat exchanger and the cylinder can be realized, so the U-tube heat exchanger also has the advantages of a fixed tube-sheet heat exchanger while maintaining own advantages.
Description
technical field [0001] The invention relates to the technical field of heat exchanger equipment, in particular to a U-shaped tube heat exchanger baffle assembly and a fixing and sealing method thereof. Background technique [0002] Heat exchanger is a device that transfers part of the heat of hot fluid to cold fluid. It occupies an important position in many industrial productions such as chemical industry, petroleum, power, food and nuclear power, and is widely used. Among them, the fixed tube sheet heat exchanger and the U-shaped tube heat exchanger are used more frequently. The fixed tube sheet heat exchanger is welded and fixed on two tube sheets and multiple baffles on the cylinder, and a large amount of heat is exchanged. The tubes are penetrated in sequence, and the advantage of the fixed tube sheet heat exchanger is that the baffle and the cylinder are fixedly connected, the vibration resistance is good, and the seal between the baffle and the cylinder is realized, w...
Claims
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IPC IPC(8): F28D7/06F28F9/24F28F11/00
CPCF28D7/06F28F9/24F28F11/00
Inventor 曹丽琴张红升周艳萍陈端梁鸿赵元
Owner YANSHAN UNIV