Baffle plate support method using small inclination angle helical baffle plate to realize large helical lead
A technology of helical baffles and support methods, applied in fixed conduit assemblies, fixed tubular conduit assemblies, heat exchange equipment, etc., can solve the problems of large flow resistance, flow dead zone, low heat transfer coefficient, etc. The effect of reducing and facilitating mass production
Active Publication Date: 2016-08-31
SOUTHEAST UNIV
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Problems solved by technology
The spiral baffle heat exchanger can overcome the disadvantages of the commonly used bow baffles, such as the flow dead zone, the large flow resistance, and the large support span of the tube bundle at the gap, which is easy to scale and induce vibration damage.
However, it is difficult to process the baffles of the spiral baffle heat exchanger with excellent performance, and it needs to be equipped with mold tooling with the same diameter and inclination angle, so the serialization of baffle diameter and inclination angle is very important, but by This will lead to poor matching of design parameters for applications that need to be between the two inclination angles in serialization. It may occur that if a smaller inclination angle is used, the resistance will be too large, and if a larger inclination angle is used, the heat transfer coefficient will be low The situation has affected the popularization and application of spiral baffle heat exchangers
Method used
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[0025] Example: such as figure 1 with figure 2 As shown, a method for supporting a baffle plate with a smaller inclination angle spiral baffle plate to achieve a larger spiral lead, taking a double-headed six-point spiral baffle plate heat exchanger as an example, the spiral baffle plate supporting method The parts involved include the left tube plate 1, the spiral baffle group 2, the tie rod group 3, the casing group 4, the number is 6 times the number of spiral baffle plates (the number of tie rod holes multiplied by 2 inclined washers 5, 7 nuts 6 The spiral baffle set 2 includes a first single-head spiral baffle set 2-1 and a second single-head spiral baffle set 2-2, the spiral baffle set is connected end to end Circumferentially overlapping six-point spiral baffle 2-1-1 (hereinafter referred to as spiral baffle), the number of which can be determined according to the length of the baffle arrangement section of the heat exchanger tube bundle, the spiral lead and the number ...
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A baffle plate support method using a small inclination angle helical baffle plate to realize a large helical lead relates to the following parts: a left tube plate, a helical baffle plate set, a pull bar set, a sleeve set, an inclination gasket set, and a nut set; the inclination gasket set is used for correcting inclination surfaces on two sides of each pull bar hole of each helical baffle plate; surrounding pull bars are positioned outside a tube row clamped by circumferential overlapping adjacent baffle plates; the sleeve set comprises an end sleeve set, a surrounding spacing sleeve set, a central spacing sleeve set, and a segmentation sleeve set with the length determined by the designed helical lead, wherein the segmentation sleeve set is arranged between adjacent helical baffle plates. The support method can solve the poor application occasion performance problems of a needed inclination angle between two inclination angles in serialization, thus fully utilizing heat exchanger allowing resistance pressure drop, and improving heat exchange coefficient.
Description
Technical field [0001] The invention relates to a method for supporting a spiral baffle, in particular to the technical field of a method for supporting a baffle with a small inclination angle spiral baffle and a large spiral lead. Background technique [0002] The shell and tube heat exchanger is still the mainstream type of heat exchange equipment due to its simple structure and high pressure. Spiral baffle heat exchangers can overcome the disadvantages of commonly used bow baffles, such as dead zone flow, high flow resistance, large tube bundle support span at the gap, easy scaling and induced vibration damage. However, it is more difficult to process the baffle plate of the spiral baffle heat exchanger with excellent performance. It needs mold tooling with the same diameter and inclination angle. Therefore, the serialization of the baffle diameter and the inclination angle is very important. This will cause poor design parameter matching in applications that need to be betwe...
Claims
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IPC IPC(8): F28D1/053F28F9/24
CPCF28D1/053F28F9/24F28D7/16F28D7/1669F28F9/22F28F2009/228
Inventor 陈亚平汤红铃吴嘉峰
Owner SOUTHEAST UNIV