CN204730708U - A kind of helical deflecting plate pipe and shell type heat exchanger of unequal-interval - Google Patents

A kind of helical deflecting plate pipe and shell type heat exchanger of unequal-interval Download PDF

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Publication number
CN204730708U
CN204730708U CN201520349124.0U CN201520349124U CN204730708U CN 204730708 U CN204730708 U CN 204730708U CN 201520349124 U CN201520349124 U CN 201520349124U CN 204730708 U CN204730708 U CN 204730708U
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shell
heat exchanger
tube
deflection
adjacent
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CN201520349124.0U
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Inventor
张晓兰
马毓姝
李德雨
李栓柱
武晓伟
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Luoyang Sunrui Special Equipment Co Ltd
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Luoyang Sunrui Special Equipment Co Ltd
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Abstract

The utility model belongs to technical field of heat exchangers, proposes a kind of helical deflecting plate pipe and shell type heat exchanger of unequal-interval.The helical deflecting plate pipe and shell type heat exchanger of a kind of unequal-interval proposed includes cylindrical shell (4), heat exchanger tube (6), deflection plate assembly, tube-side inlet pipe (12), tube side outlet (13), shell side inlet adapter (14) and shell-side outlet adapter (15); Deflection plate assembly is the helical baffles (5) overlapped by polylith deflection plate; The length of adjacent two deflection plates overlap joint increases gradually along shell-side fluid flow direction, namely the spacing between adjacent two deflection plates reduces gradually along shell-side fluid flow direction, spacing between adjacent two the described deflection plates in nearly shell side inlet pipe (14) place is maximum, and the spacing between adjacent two deflection plates in nearly shell-side outlet pipe (15) place is minimum.The utility model avoids tube bank and vibrates, and reduces heat exchange area, extends the service life of heat exchanger.

Description

A kind of helical deflecting plate pipe and shell type heat exchanger of unequal-interval
Technical field
The utility model belongs to technical field of heat exchangers, is specifically related to a kind of helical deflecting plate pipe and shell type heat exchanger of unequal-interval.
Background technology
The shell side supporting construction of existing shell-and-tube cooler has single segmental baffle, double segmental baffle, helical baffles etc., and wherein spiral baffle supporting all adopts uniform pitch and the equidistant arrangement of deflection plate; The fluid that condensation occurs walks shell side, in different spiralization cycles, there is equal circulation area, shell-side fluid is along heat exchanger axially helically smooth flow also constantly condensation, helical flow effectively can reduce heat transfer dead band, slow down dirt deposition, avoid simultaneously fluid wide-angle turn back bring severe stress loss, pressure drop is less; But at shell side inlet place because shell-side fluid gas phase volume flow rate is large, flow velocity is high, easily cause tube bank to be vibrated; Along with shell-side fluid is constantly condensed, volume flow reduces gradually, and flow velocity reduces, and easily causes gas-liquid two-phase laminar flow, and be unfavorable for the carrying out of conducting heat, especially when shell-side outlet segment fluid flow gas phase fraction is minimum, flow velocity is minimum, and heat transfer coefficient is also minimum.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model is the helical deflecting plate pipe and shell type heat exchanger proposing a kind of unequal-interval.
The utility model adopts following technical scheme for completing above-mentioned purpose:
A helical deflecting plate pipe and shell type heat exchanger for unequal-interval, described helical deflecting plate pipe and shell type heat exchanger includes cylindrical shell, heat exchanger tube, deflection plate assembly, tube-side inlet pipe, tube side outlet, shell side inlet adapter and shell-side outlet adapter; The heat-exchanging tube bundle of multiple heat exchanger tube composition be arranged in parallel is arranged on front tube sheet, back tube sheet through its two ends of deflection plate assembly; Described deflection plate assembly is the helical baffles overlapped by polylith deflection plate; Described deflection plate is 1/4th segmental baffles or oval deflection plate; The length of adjacent two described deflection plate overlap joints increases gradually along shell-side fluid flow direction, namely the spacing between adjacent two described deflection plates reduces gradually along shell-side fluid flow direction, spacing between adjacent two the described deflection plates in nearly shell side inlet pipe place is maximum, and the spacing between adjacent two the described deflection plates in nearly shell-side outlet pipe place is minimum.
The helical deflecting plate pipe and shell type heat exchanger of a kind of unequal-interval that the utility model proposes, deflection plate adopts unequal-interval to arrange, baffle(s) spacing is changed by the lap of splice adjusted between adjacent two deflection plates, shell side inlet place has maximum baffle(s) spacing, reduce gradually along shell-side fluid flow direction spiral baffling distance between plates, shell-side outlet place baffle(s) spacing is minimum, further enhances the shell-side heat transfer performance of helical deflecting plate pipe and shell type heat exchanger, and avoid tube bank vibrate; Along with the continuous condensation of shell-side fluid, circulation area also reduces gradually, make the flow velocity that shell-side fluid still keeps higher, gas-liquid laminar flow phenomenon can not be there is, thus ensure along journey diverse location, all to there is higher heat transfer coefficient at shell side, and then reduction heat exchange area, extend the service life of heat exchanger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the layout schematic diagram of helical baffles in the utility model.
In figure: 1, front-end pipe box, 2, channel flange, 3, front tube sheet, 4, cylindrical shell, 5, helical baffles, 6, heat exchanger tube, 7, back tube sheet, 8, channel flange, 9, rear end header, 10, sliding saddle, 11, fixed saddle, 12, tube-side inlet pipe, 13, tube side outlet, 14, shell side inlet adapter, 15, shell-side outlet adapter.
Detailed description of the invention
Be illustrated the utility model with specific embodiment by reference to the accompanying drawings, in this utility model, the structure of shell-and-tube heat exchanger adopts existing technical pattern in prior art, and this utility model only relates to the structural design of deflection plate;
As shown in Figure 1, a helical deflecting plate pipe and shell type heat exchanger for unequal-interval, described helical deflecting plate pipe and shell type heat exchanger includes cylindrical shell 4, heat exchanger tube 6, deflection plate assembly, tube-side inlet pipe 12, tube side outlet 13, shell side inlet adapter 14 and shell-side outlet adapter 15; The heat-exchanging tube bundle that multiple heat exchanger tube 6 be arranged in parallel forms is arranged on front tube sheet 3, back tube sheet 7 through its two ends of deflection plate assembly; The front end of described front tube sheet 3 is connected with front-end pipe box 1, and the rear end of back tube sheet 7 connects rear end header 9; Described tube-side inlet pipe 12 is arranged on rear end header 9; Described tube side outlet 13 is arranged on front-end pipe box 1; Described shell side inlet adapter 14 and shell-side outlet adapter 15 are all arranged on cylindrical shell 4; Composition graphs 2, described deflection plate assembly is the helical baffles 5 overlapped by polylith deflection plate; Described deflection plate is 1/4th segmental baffles or oval deflection plate; The length of adjacent two described deflection plate overlap joints increases gradually along shell-side fluid flow direction, namely the spacing between adjacent two described deflection plates reduces gradually along shell-side fluid flow direction, spacing between adjacent two the described deflection plates in nearly shell side inlet pipe 14 place is maximum, and the spacing between adjacent two the described deflection plates in nearly shell-side outlet pipe 15 place is minimum.

Claims (1)

1. a helical deflecting plate pipe and shell type heat exchanger for unequal-interval, described helical deflecting plate pipe and shell type heat exchanger includes cylindrical shell (4), heat exchanger tube (6), deflection plate assembly, tube-side inlet pipe (12), tube side outlet (13), shell side inlet adapter (14) and shell-side outlet adapter (15); The heat-exchanging tube bundle that multiple heat exchanger tube (6) be arranged in parallel forms is arranged on front tube sheet (3), back tube sheet (7) through its two ends of deflection plate assembly; Described deflection plate assembly is the helical baffles (5) overlapped by polylith deflection plate; Described deflection plate is 1/4th segmental baffles or oval deflection plate; It is characterized in that: the length of adjacent two described deflection plate overlap joints increases gradually along shell-side fluid flow direction, namely the spacing between adjacent two described deflection plates reduces gradually along shell-side fluid flow direction, spacing between adjacent two the described deflection plates in nearly shell side inlet pipe (14) place is maximum, and the spacing between adjacent two the described deflection plates in nearly shell-side outlet pipe (15) place is minimum.
CN201520349124.0U 2015-05-27 2015-05-27 A kind of helical deflecting plate pipe and shell type heat exchanger of unequal-interval Active CN204730708U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520349124.0U CN204730708U (en) 2015-05-27 2015-05-27 A kind of helical deflecting plate pipe and shell type heat exchanger of unequal-interval

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520349124.0U CN204730708U (en) 2015-05-27 2015-05-27 A kind of helical deflecting plate pipe and shell type heat exchanger of unequal-interval

Publications (1)

Publication Number Publication Date
CN204730708U true CN204730708U (en) 2015-10-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910486A (en) * 2016-04-15 2016-08-31 东南大学 Multi-head six-part spiral baffle plate heat exchanger baffle plate support structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910486A (en) * 2016-04-15 2016-08-31 东南大学 Multi-head six-part spiral baffle plate heat exchanger baffle plate support structure
CN105910486B (en) * 2016-04-15 2018-03-20 东南大学 A kind of bull six divides the baffle plate support structure of spiral baffle heat exchanger

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