CN201155932Y - Continuous spiral traverse baffle double shell pass combined special-shaped tube bundle heat exchanger - Google Patents

Continuous spiral traverse baffle double shell pass combined special-shaped tube bundle heat exchanger Download PDF

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Publication number
CN201155932Y
CN201155932Y CNU2008200424761U CN200820042476U CN201155932Y CN 201155932 Y CN201155932 Y CN 201155932Y CN U2008200424761 U CNU2008200424761 U CN U2008200424761U CN 200820042476 U CN200820042476 U CN 200820042476U CN 201155932 Y CN201155932 Y CN 201155932Y
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China
Prior art keywords
tube
heat exchanger
described heat
pipe
heat
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Expired - Lifetime
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CNU2008200424761U
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Chinese (zh)
Inventor
张正国
陆应生
高学农
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South China University of Technology SCUT
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South China University of Technology SCUT
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Priority to CNU2008200424761U priority Critical patent/CN201155932Y/en
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Abstract

The utility model discloses a continuous spiral air baffle double-shell side combined special tube bundle heat exchanger; a seal head on one end of the heat exchanger is provided with a tube side inlet and a tube side outlet; a first tube bundle and a second tube bundle are arranged between tube plates; the first tube bundle consists of the first tube of a plurality of heat transfer tubes, and is arranged between a central pipe and a shell; the second tube bundle consists of the second tube of a plurality of heat transfer tubes, and is arranged in the central tube; the first heat transfer tube is a special tube with a rough wall surface, and the second transfer heat is a spiral flat tube; a distance tube and the first tube bundle go through the spiral air baffle; both ends of the distance tube and the first tube bundle are respectively connected with the tube plates; the spiral air baffle is fixed by the distance tube; both ends of the second tube bundle are respectively connected with the tube plates; the central tube is provided with two gaps respectively corresponding to the shell side inlet and the shell side outlet of the heat exchanger. With the two tube bundles with different heat transfer tube structures, the heat exchanger has the advantages of little fluid back mixing, no flow dead area and small impact of bypass flow and leakage flow, can make full use of the shell diameter to deploy the heat transfer tubes, and has high heat transfer coefficient.

Description

A kind of continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger
Technical field
The utility model relates to technical field of heat exchangers, particularly a kind of continuous helical deflecting plate heat exchanger.
Background technology
The heat exchanger of industrial use has multiple structure, between pipe aspect the support structure, mainly contain single bow deflection plate, bouble-bow deflection plate and dish ring deflection plate etc., heat exchanger commonly used at present is more with the structure that single bow deflection plate supports tube bank, and heat-transfer pipe is mainly smooth heat transfer tube.In segmental baffle board heat exchangers, fluid comes and goes baffling and washes away tube bank between deflection plate, and the fluid body resistance that causes because of baffling is big, pressure drop is high, and causes that easily bundle vibration destroys.Simultaneously, the heat transfer coefficient of plain tube is lower, has also caused heat exchanger heat-transfer performance poor.Fluid have in the shell side helical flow flow evenly, pressure drop is low and be difficult for causing the advantage of tube bundle vibration, adopt helical baffles can overcome the inherent defect of bow type baffle heat exchanger as the heat exchanger of supporting construction between pipe, by the collocation of helical baffles and special pipe, can further improve the heat transfer property of heat exchanger.At present, spiral baffle heat exchanger mainly comprises two big classes, and a class is not establish the discontinuous spiral baffle heat exchanger of central tube, and another kind of is the continuous helical deflecting plate heat exchanger that is provided with central tube.Discontinuous helical baffles is generally formed (seeing Chinese patent 03213481.9 that is disclosed on 07 14th, 2004 and the Chinese patent 200320106763.1 that is disclosed in November 10 in 2004) by the fan-shaped flat board of polylith, there is vee between adjacent two fanning strips, exists leakage current problem and resistance to increase.There is not above problem in the continuous helical baffling that is provided with central tube, and the assembling of heat exchanger is simpler.Its reason is that helical baffles is fixed on the central tube, and heat-transfer pipe is easier to pass in the pore of helical baffles during shell side tube bank assembling.But the central tube of existing continuous helical deflecting plate heat exchanger mainly is to be used for the support helix deflection plate, do not arrange tube bank (see the Chinese patent 03214056.8 that is disclosed on 08 04th, 2004 and be disclosed on 01 11st, 2006 Chinese patent 200510043033.5) in the central tube, since the diameter of central tube normally the heat exchanger shell diameter 20%~40%, stringing quantity reduces in this unit's of making diameter of the housing, the heat exchanger heat transfer area also reduces, especially for the bigger heat exchanger of diameter of the housing, the area of loss is just more, and the heat transfer property of heat exchanger descends also more.
The utility model content
The purpose of this utility model is to overcome the above-mentioned shortcoming of existing continuous helical deflecting plate heat exchanger, and a kind of continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger is provided, and heat exchange area obviously improves.
The utility model is achieved through the following technical solutions:
Continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger of the present utility model comprises end socket, housing, continuous helical deflecting plate, one of heat-transfer pipe and, central tube, distance sink tube, tube sheet, between tube sheet, be provided with continuous helical deflecting plate, central tube, one of heat-transfer pipe and and distance sink tube, one of distance sink tube and heat-transfer pipe pass continuous helical deflecting plate, its two is connected with tube sheet respectively, two of two of central tube and heat-transfer pipe also is connected with tube sheet respectively, continuous helical deflecting plate is fixed by distance sink tube, on end socket, be provided with the outlet of tube side import and tube side, on housing, be provided with the outlet of shell side import and shell side, and have breach in the shell side import of heat exchanger and the corresponding central tube position of outlet, the guiding fluid enters in the central tube and is mobile at two shell side of tube bank; The outer surface of tube wall of one of heat-transfer pipe is rough structure, adopts continuous helical deflecting plate to support.One of heat-transfer pipe is low ribbed pipe, petal-shaped fin tube, spiral grooved tube, band pipe or convergent-divergent pipe.One of heat-transfer pipe is arranged and can be triangle stringing, corner triangle stringing, square stringing, corner square stringing or concentric circles stringing.Heat exchanger can be versions such as fixed tube sheet type, floating head type or U type tubular type.
The heat-transfer pipe of one of above-mentioned tube bank is the special pipe of non-hydraulically smooth surface, can be petal-shaped fin tube, band pipe or spiral grooved tube, the convergent-divergent pipe of the low ribbed pipe of two-dimentional fin, discontinuous three-dimension fin.Two heat-transfer pipe of tube bank is a spiral flat tube, and this is a kind of special pipe of non-circular cross sections, and this heat-transfer pipe is to be parent tube with the pipe, distortion moulding after flattening, its cross section is oval, and many spiral flat tubes support mutually along the contact of tube axial direction point and form tube bank, need not deflection plate and support.
The utility model compared with prior art has following beneficial effect:
1, arrange heat-transfer pipe in the central tube of continuous helical deflecting plate heat exchanger, make full use of diameter of the housing, increase heat transfer area, overall heat-transfer coefficient improves;
2, the heat-transfer pipe in the centering pipe is a spiral flat tube, and many spiral flat tubes support mutually along the contact of tube axial direction point and form tube bank, need not to support deflection plate, and are simple in structure.In the spiral flat tube tube bank, to manage inside and outside fluid and all be vertical rotational flow, pressure drop is low, and the boundary layer of tube wall fluid is constantly destroyed, and turbulence is strong, the heat transfer coefficient height.
3, two tube banks adopt the heat-transfer pipe of different structure to make up, and realize heat conduction reinforced.Compare with existing continuous helical deflecting plate heat exchanger, under the same conditions, continuous spiral traverse baffle double shell side combined special-shaped tube bundle total exchange coefficient of the heat exchanger of the present utility model can improve more than 30%.
Description of drawings
Fig. 1 is the bright fixed tube sheet type continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger structure schematic diagram of this law.
Fig. 2 is provided with the structural representation of one of continuous helical deflecting plate tube bank of central tube.
Fig. 3 has the center tube structure schematic diagram of breach.
Spiral flat tube and cross sectional representation thereof in Fig. 4 centering pipe.
Fig. 5 is the axial section of the low ribbed pipe of two-dimentional fin.
Fig. 6 a is the structural representation of three-dimension fin petal-shaped fin tube, and the three-dimension fin parameter is respectively the high h of fin, fin pitch p1 and fin gap P2; Fig. 6 b is the radial cross-section figure of three-dimension fin petal-shaped fin tube.
Fig. 7 is the axial section of spiral grooved tube.
Fig. 8 is the axial section of band pipe.
Fig. 9 is the axial section of convergent-divergent pipe.
Figure 10 is the concentric circles stringing figure of one of tube bank.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail, but embodiment of the present utility model is not limited thereto.
As shown in Figure 1, in the present embodiment continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger mainly by one of heat-transfer pipe in one of end socket 1, shell side import 2, housing 3, continuous helical deflecting plate 4, tube bank 5, distance sink tube 6, tube sheet 7, tube side outlet 8, tube side import 9,10 of shell side outlets form, central tube 11, tube bank two in heat-transfer pipe 2 12.Between tube sheet 7, be provided with one of continuous helical deflecting plate 4, heat-transfer pipe 5, distance sink tube 6,2 12 of central tube 11 and heat-transfer pipe.One of heat-transfer pipe 5 and distance sink tube 6 pass continuous helical deflecting plate 4, and its two is connected with tube sheet 7 respectively, and continuous helical deflecting plate 4 is fixing by distance sink tube 6.2 12 of central tube 11 and heat-transfer pipe, its two also are connected with tube sheet 7 respectively.Figure 1 shows that fixed tube-sheet exchanger.
Shown in accompanying drawing 2,3, helical baffles 4 is continuous helical structure, and the center of tube bank is provided with central tube 11.With shell side import and outlet corresponding position, have breach on the central tube, the therefrom turnover in the core barrel of guiding fluid.
As shown in Figure 4, spiral flat tube is to be parent tube with the pipe, distortion moulding after flattening, its cross section be oval, many spiral flat tubes along tube axial direction point contact mutually support formation tube bank two, do not support deflection plate.Cross section at diverse location place spiral flat tube is ellipse.
Fig. 5 to Fig. 7,8,9 is respectively the axial section of the low ribbed pipe of two-dimentional fin, spiral grooved tube, band pipe, convergent-divergent pipe, and these all can be used as the heat-transfer pipe of one of tube bank.
Fig. 6 is the cross-sectional view and the fin structure schematic diagram of three-dimension fin petal-shaped fin tube, and this pipe also can be used as the heat-transfer pipe of one of tube bank.More than the metal of all heat-transfer pipes can be carbon steel, stainless steel, non-ferrous metal and alloy.
As shown in figure 10, the heat-transfer pipe of one of tube bank can be arranged by the concentric circles form.

Claims (10)

1, a kind of continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger comprises housing (3), tube sheet (7) and end socket (1), is provided with continuous helical deflecting plate (4), central tube (11) and distance sink tube (6) between the tube sheet (7); The end socket (1) of described heat exchanger one end is provided with tube side import (9) and tube side outlet (8), it is characterized in that: also be provided with two of one of tube bank and tube bank between the tube sheet (7), one of tube bank is arranged between central tube (11) and the housing (3), and two of tube bank is arranged in the central tube (11); One of described tube bank is made of one of a plurality of heat-transfer pipes (5), two two (12) formations by a plurality of heat-transfer pipes of tube bank; Helical baffles (4) is passed in one of distance sink tube (6) and tube bank, and its two is connected with tube sheet (7) respectively, and helical baffles (4) is fixing by distance sink tube (6); Two of two of tube bank also is connected with tube sheet (7) respectively; On housing (3), be provided with shell side import (10) and shell side outlet (2); Have respectively shell side import (10) and shell side outlet (2) corresponding two breach on the central tube (11) with heat exchanger.
2,, it is characterized in that one of described heat-transfer pipe (5) is the special pipe of hydraulically rough surface according to right 1 described heat exchanger.
3,, it is characterized in that one of described heat-transfer pipe (5) is the low ribbed pipe of two-dimentional fin according to right 1 described heat exchanger.
4,, it is characterized in that one of described heat-transfer pipe (5) is the petal-shaped fin tube of three-dimension fin according to right 1 described heat exchanger.
5,, it is characterized in that one of described heat-transfer pipe (5) is band pipe or spiral grooved tube according to right 1 described heat exchanger.
6,, it is characterized in that one of described heat-transfer pipe (5) is the convergent-divergent pipe according to right 1 described heat exchanger.
7,, it is characterized in that two (12) of described heat-transfer pipe are the special pipe of oval cross section according to right 1 described heat exchanger.
8,, it is characterized in that two (12) of described heat-transfer pipe are spiral flat tube according to right 1 described heat exchanger.
9,, it is characterized in that a plurality of heat-transfer pipes in one of described tube bank are triangle stringing, corner triangle stringing, square stringing, corner square stringing or concentric circles stringing according to right 1 described heat exchanger.
10, according to right 8 described heat exchangers, it is characterized in that described spiral flat tube is is parent tube with the pipe, distortion moulding after flattening, its cross section be oval, many spiral flat tubes along tube axial direction point contact mutually support formation tube bank two.
CNU2008200424761U 2008-01-04 2008-01-04 Continuous spiral traverse baffle double shell pass combined special-shaped tube bundle heat exchanger Expired - Lifetime CN201155932Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200424761U CN201155932Y (en) 2008-01-04 2008-01-04 Continuous spiral traverse baffle double shell pass combined special-shaped tube bundle heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200424761U CN201155932Y (en) 2008-01-04 2008-01-04 Continuous spiral traverse baffle double shell pass combined special-shaped tube bundle heat exchanger

Publications (1)

Publication Number Publication Date
CN201155932Y true CN201155932Y (en) 2008-11-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100533037C (en) * 2008-01-04 2009-08-26 华南理工大学 Continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger
CN110998208A (en) * 2017-08-18 2020-04-10 泰而勒商用食品服务公司 Heat exchanger and method for manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100533037C (en) * 2008-01-04 2009-08-26 华南理工大学 Continuous spiral traverse baffle double shell side combined special-shaped tube bundle heat exchanger
CN110998208A (en) * 2017-08-18 2020-04-10 泰而勒商用食品服务公司 Heat exchanger and method for manufacturing the same

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C14 Grant of patent or utility model
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AV01 Patent right actively abandoned

Effective date of abandoning: 20080104

C25 Abandonment of patent right or utility model to avoid double patenting