CN200946995Y

CN200946995Y - Short-circuit proof spiral baffle tube type heat exchanger

Info

Publication number: CN200946995Y
Application number: CN 200620008595
Authority: CN
Inventors: 宋小平; 裴志中
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-28
Filing date: 2006-03-28
Publication date: 2007-09-12
Anticipated expiration: 2016-03-28

Abstract

The utility model provides a short-circuit-proof spiral traverse baffle shell and tube heat exchanger. A circle of spiral of the spiral traverse baffle is made up by continuous X blocks of traverse baffle. Each traverse baffle is provided with straight flange and broadened with width C of one to two rows of tube gap. In assembly, overlapped parts are traversed by the same tube. In order to prevent interference of contact point, a cut with a width of C is opened on intersection, which favors two adjacent spiral traverse baffles jointing in central line. By continuously adopting the overlapped and interlaced structure above, the utility model displays conduction effect for mediums flowing through tube bundle, reduces short-circuit phenomenon caused by triangle space formed by two adjacently straight flanges of fanwise plates, reinforces continuity among the traverse baffles and prevent separation toward axial direction during assembly.

Description

Short circuit-proof spiral baffle plate shell type heat exchanger

(1) technical field

The utility model relates to the shell-and-tube spiral baffle heat exchanger in the industry technological processes such as oil, chemical industry, generating, metallurgy, food, pharmacy.

(2) background technology

Industry such as petrochemical industry is brought into use the shell-and-tube spiral baffle heat exchanger in recent years.Spiral baffle heat exchanger shell side flow pattern is neither vertically bend the cross-current that plate forms, the longitudinal stream that neither rod baffle forms, but a kind of spiral flow that moves around housing shaft cartridge eddy flow according to helical curve, this flow pattern has avoided the big pressure of the vertical duction that the vertical bow template type of flow brings to fall and the stagnant area (see figure 1), thereby improved flow velocity, made full use of heat exchange area.Therefore, reached the raising heat exchange efficiency, reduce pressure and fall, reduced fouling and sediment alluvial effect.But because every deflection plate and shell side axis are at an angle, from before restraining after the tube bank successively butt joint arrange, form a triangle space between two adjacent baffle, make the medium that flows along deflection plate form short circuit shunting easily.And owing to do not have firm fixedly connectedly between two deflection plates, structure is not compact, separates easily.(see figure 2)

(3) summary of the invention

The purpose of this utility model is to improve the weakness of above-mentioned heat exchanger and a kind of novel short circuit-proof spiral baffle plate shell type heat exchanger of proposing.Former spiral baffle heat exchanger deflection plate is projected as the fanning strip (integers of 1≤x≤16) of 360 °/x, every fanning strip and housing axis have angle, adjacent two fanning strip straight flanges are continuous with simple docking mode, make and form approximate helical duct in the housing, this simple docking mode, easily produce short circuit at the straight flange of two adjacent fan plates and the triangle space of housing formation, be easy to generate the tube bank radial separation during assembling.In the embodiment shown in fig. 3 with former segmental baffle (1,2,3,4) structure is widened one respectively and is drained into two combs apart from C in the straight flange both sides, the straight flange of adjacent two fanning strips overlaps with the cross-lapping mode widened section that continues, for avoiding interfering cross-lapping position widened section to cut away.This intersection overlapping overlapping mode continues, can play guiding function to the medium of the tube bank of flowing through, reduce the short circuit phenomenon that two adjacent fanning strip straight flanges intersect to form triangle space, strengthened the continuity between the deflection plate simultaneously, the radial separation when having avoided assembling.

(4) description of drawings

Fig. 1, bow type baffle heat exchanger baffling schematic diagram

Fig. 2, helical baffles butt joint baffling schematic diagram

Fig. 3, short circuit-proof spiral baffle plate joint form schematic diagram

(5) specific embodiment

One all spirals of helical baffles still are made of continuously X piece deflection plate, but each piece deflection plate straight flange increases by one to two comb apart from width C.Width C is looked the device diameters size and the deflection plate angle is determined.The overlapping overlap is interfered for avoiding contact point by passing with the root pipe during assembling, opens the breach that a width is C so that adjacent two helical baffles are crossing in centerline at infall.

Claims

1, to it is characterized by each piece projection of shape be that 360 °/4 segmental baffle (1,2,3,4) structure increases by one to two comb respectively apart from width in the straight flange both sides to short circuit-proof spiral baffle plate shell type heat exchanger, and widened section is overlapping.