CN2739555Y - Shell-and-tube heat exchange for vortex net board supporting tube bundle - Google Patents

Shell-and-tube heat exchange for vortex net board supporting tube bundle Download PDF

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Publication number
CN2739555Y
CN2739555Y CN 200420088741 CN200420088741U CN2739555Y CN 2739555 Y CN2739555 Y CN 2739555Y CN 200420088741 CN200420088741 CN 200420088741 CN 200420088741 U CN200420088741 U CN 200420088741U CN 2739555 Y CN2739555 Y CN 2739555Y
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CN
China
Prior art keywords
eddy flow
tube
web plate
shell
bar
Prior art date
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Expired - Lifetime
Application number
CN 200420088741
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Chinese (zh)
Inventor
邓先和
张亚君
潘朝群
王杨君
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South China University of Technology SCUT
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South China University of Technology SCUT
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Publication date
Application filed by South China University of Technology SCUT filed Critical South China University of Technology SCUT
Priority to CN 200420088741 priority Critical patent/CN2739555Y/en
Application granted granted Critical
Publication of CN2739555Y publication Critical patent/CN2739555Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a shell-and-tube heat exchange for a vortex net board supporting tube bundle, comprising a shell body, a heat transfer tube, a heat transfer tube supporting board, and tube boards. The tube boards are arranged on two ends inside the shell body. The heat transfer tube supporting board is arranged between the tube boards on the two ends inside the shell body. The heat transfer tube passes through the heat transfer tube supporting board to be connected with the tube boards. The heat transfer tube supporting board is a vortex net board. A vortex member is arranged on the vortex net board. The vortex member is a spiral twist sheet with a spiral angle. The axial shape of the spiral twist sheet is circular. The shell-and-tube heat exchange for a vortex net board supporting tube bundle uses the vortex member arranged on the vortex net board to carry out section vortex acceleration for the fluid which flows across a tube gap, and the fluid forms longitudinal self vortex which can be maintained for a longer distance on the downstream position of the vortex member. The marginal flow rate of the fluid of the tube gap is enhanced, thereby, the flow rate of the fluid nearby the wall surface of the heat transfer tube is effectively enhanced, the film heat transfer coefficient of a shell pass is greatly enhanced, and the heat transfer of the shell pass is intensified.

Description

The shell-and-tube heat exchanger of eddy flow web plate supporting tube bank
Technical field
The utility model relates to the shell-and-tube heat exchanger technology, particularly a kind of shell-and-tube heat exchanger with support unit between pipe.
Background technology
The shell side structure of existing shell-and-tube heat exchanger has multiple, is that the Chinese utility model patent " axial flow type petal fin formed tube heat exchanger " of ZL93243442.8 discloses a kind of with the shell side structure of corrugated slotted hole support plate as support unit between pipe as the patent No.; It is a kind of with tube coupling cavity ring or the helix cavity ring shell side structure as support unit between pipe that the patent No. is that the Chinese utility model patent " supporter between the shell-and-tube heat exchanger pipe " of ZL89218385.3 discloses; Support unit is horizontal disturbance to the disturbance of shell-side fluid between these shell side pipes, the horizontal eddy current that is caused can comparatively fast be decayed along support downstream direction between tube gap, can not keep the heat conduction reinforced facilitation of longer distance to the downstream heat transfer tubes surface, therefore, between the shell side pipe support unit to shell side heat transfer intensification effect a little less than, and main dependence has the intensify heat transfer pipe of various rough rib faces (as the convergent-divergent pipe, screw finned pipe and petal finned tube etc.) raising shell side film coefficient of heat transfer, because the axial flow velocity of shell-side fluid is subjected to the bigger restriction of flow section to be difficult for improving, if only rely on the means of the rough rib face of intensify heat transfer pipe, the amplitude that the shell side film coefficient of heat transfer improves is not high, compare with plain tube, be generally about 50%; For further improving the shell side film coefficient of heat transfer of shell-and-tube heat exchanger shell-side fluid axial flow, need the shell side runner of heat exchanging device to do further to optimize to improve.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of prior art, provide between a kind of utilization pipe support unit that fluid between tube gap is produced the longitudinal cyclone effect, make fluid can keep vertical spin current of longer distance, effectively improve the rate of flow of fluid of heating surface bank wall, improve the shell-and-tube heat exchanger of the eddy flow web plate supporting tube bank of shell side film coefficient of heat transfer by a relatively large margin.
The purpose of this utility model is achieved through the following technical solutions: the shell-and-tube heat exchanger of this eddy flow web plate supporting tube bank comprises housing, heat-transfer pipe, heat-transfer pipe support plate, tube sheet, described tube sheet is arranged at two ends in the housing, in housing, be provided with the heat-transfer pipe support plate between the tube sheet of two ends, described heat-transfer pipe passes the heat-transfer pipe support plate and is connected with tube sheet, it is characterized in that: described heat-transfer pipe support plate is the eddy flow web plate, and the eddy flow web plate is provided with the eddy flow member.
Described eddy flow web plate comprises web plate frame, longitudinal bracing bar, cross-brace bar, eddy flow member, the vertical setting and all fixedlying connected with the web plate frame mutually of described longitudinal bracing bar and cross-brace bar, described eddy flow member is connected on the axial crosspoint of longitudinal bracing bar and cross-brace bar.
Described eddy flow member can be positioned at a side of longitudinal bracing bar or cross-brace bar, only is connected with longitudinal bracing bar or cross-brace bar; Also can be between longitudinal bracing bar and cross-brace bar, its two ends are connected with longitudinal bracing bar and cross-brace bar respectively.
Described eddy flow web plate also can comprise web plate frame, support bar, eddy flow member between broken line support bar, broken line repeatedly, the described support bar of broken line is repeatedly fixedlyed connected with the web plate frame, be connected with support bar between broken line between two adjacent support bars of broken line repeatedly, described eddy flow member is connected in repeatedly on the tie point of support bar between broken line support bar and broken line.Support bar can connect and compose cellular (regular hexagon) grid between described support bar of broken line repeatedly and broken line.
Described eddy flow member is the helical ribbon of one section band helical angle, can evenly reverse certain angle around symmetry axis by a rectangular plain film and form; The axial shape of described helical ribbon is circular, and described circle is the circumcircle of each heat-transfer pipe adjacent with described helical ribbon; The length of described helical ribbon is some multiples of pitch.
Particularly, when relative total anglec of rotation is α (α is 90 ° a integral multiple) between the described helical ribbon two ends, the helical ribbon both ends are perpendicular, can be connected on the space vertical mutually but at a distance of between the longitudinal bracing bar and cross-brace bar of a segment distance.
Utilize the intensified heat transfer method of the shell-and-tube heat exchanger realization of above-mentioned eddy flow web plate supporting tube bank to be: to utilize the eddy flow member that is provided with on the eddy flow web plate that the fluid of flowing through between tube gap is carried out segmentation eddy flow acceleration repeatedly, make fluid form the vertical spin current that to keep longer distance at the downstream part of eddy flow member, improve the edge flow velocity of fluid between tube gap, thereby effectively improve near the rate of flow of fluid the heat-transfer pipe wall, improve the film coefficient of heat transfer of shell side greatly, strengthen shell side and conduct heat.
The utility model compared with prior art has following advantage and beneficial effect: the increase rate of (1) shell side film coefficient of heat transfer is big; The eddy flow web plate of heat exchanger shell pass is improved to vertical flow-disturbing to the flow-disturbing of fluid between tube gap by horizontal flow-disturbing, this kind flow-disturbing mode diminishes the flow velocity of fluid center, and the flow velocity of marginal zone increases, this helps improving the rate of flow of fluid at heat transfer tube wall place, increase the shell side film coefficient of heat transfer, the eddy current that support unit causes between pipe is longitudinal turbulence but not horizontal eddy current simultaneously, avoided the horizontal eddy current too fast shortcoming that decays vertically, make full use of longitudinal turbulence and can keep the strong point that long distance spins vertically, can make the coverage of cyclonic action longer like this, heat conduction reinforced effect is better, compare with support unit between existing pipe, when adopting identical heat-transfer pipe, the eddy flow web plate can reach more than 30% the raising of shell side film coefficient of heat transfer.(2) heat conduction reinforced effective, energy-saving and cost-reducing.Fluid is along in the axial flow process between tube gap, and the energy loss of longitudinal turbulence is less, can keep long spin current distance, can carry power consumption with less fluid, obtain heat conduction reinforced preferably effect.(3) support unit is made simple and easyly on technology between eddy flow web plate pipe of the present utility model, and processing cost is low, has reduced equipment investment.
Description of drawings
Fig. 1 is the structural representation of the shell-and-tube heat exchanger of the utility model eddy flow web plate supporting tube bank.
Fig. 2 is that the A-A of shell-and-tube heat exchanger shown in Figure 1 is to view.
Fig. 3 is the eddy flow web plate structural representation of shell-and-tube heat exchanger shown in Figure 1.
Fig. 4 is another structural representation of the eddy flow web plate of shell-and-tube heat exchanger shown in Figure 1.
Fig. 5 is the structural representation of helical ribbon on Fig. 3 and the eddy flow web plate shown in Figure 4.
Fig. 6 is another structural representation of the shell-and-tube heat exchanger of the utility model eddy flow web plate supporting tube bank.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
The concrete structure of the shell-and-tube heat exchanger of the utility model eddy flow web plate supporting tube bank as shown in Figure 1, comprise heat exchanger low head 1, lower perforated plate 2, following ring set 3, housing 4, eddy flow web plate 5, heat-transfer pipe 6, upper ring cap 7, upper cover 8, upper perforated plate 9, the mutual alignment of each member and annexation are: radially maintain a certain distance cross-under on eddy flow web plate 5 between each heat-transfer pipe 6 at shell side, gap between the heat-transfer pipe 6 is limited by eddy flow web plate 5, eddy flow web plate 5 along housing shaft to uniform setting, on the heat-transfer pipe 6, following two ends are respectively with last, lower perforated plate 9,2 are welded to connect, on, following ring set 7,3 respectively with last, lower perforated plate 9,2 and the two ends up and down of housing 4 be weldingly connected, on, low head 8,1 respectively with last, lower perforated plate 9,2 are weldingly connected, by last, following ring set 7,3 and the outside of the inboard of housing 4 and heating surface bank 6 and on, lower perforated plate 9,2 constitute the shell side runner of heat exchanger; Inboard and upper and lower tube sheet 9,2 by upper and lower end socket 8,1 and heat-transfer pipe 6 constitutes the tube side runner.
The structure of described eddy flow web plate 5 such as Fig. 3 and shown in Figure 5, as seen from Figure 3, eddy flow web plate 5 comprises web plate frame 5-1, longitudinal bracing bar 5-2, cross-brace bar 5-3, eddy flow member 5-4, described longitudinal bracing bar 5-2 and cross-brace bar 5-3 are axially at a distance of a segment distance and vertical setting mutually, all be fixedly connected to form web plate with web plate frame 5-1, described eddy flow member 5-4 is connected on the axial crosspoint of longitudinal bracing bar 5-2 and cross-brace bar 5-3; Described eddy flow member 5-4 is the helical ribbon of one section band helical angle, its axial shape is circular, described circle is the circumcircle (as shown in Figure 2) of each heat-transfer pipe 6 adjacent with helical ribbon, described helical ribbon evenly reverses 270 ° by a rectangular plain film around symmetry axis and forms, the length of helical ribbon is 1.5 times of pitch, as shown in Figure 5, the both ends of this helical ribbon are perpendicular, are connected on the space vertical mutually but go up (see figure 3) at a distance of the longitudinal bracing bar 5-2 and the cross-brace bar 5-3 of a segment distance.
The intensified heat transfer method that utilizes the shell-and-tube heat exchanger realization of above-mentioned eddy flow web plate supporting tube bank is to utilize the helical ribbon that is provided with on the eddy flow web plate 5 that the fluid of flowing through between tube gap is carried out the acceleration of segmentation eddy flow, make fluid form the vertical spin current that to keep longer distance at the downstream part of helical ribbon, improve the edge flow velocity of fluid between tube gap, thereby effectively improve near the rate of flow of fluid the heat-transfer pipe wall, improve the film coefficient of heat transfer of shell side greatly, strengthen shell side and conduct heat.
Embodiment 2
Present embodiment except that following technical characterictic with embodiment 1: the structure of described eddy flow web plate 5 is as shown in Figure 4, comprise web plate frame 5-1, longitudinal bracing bar 5-2, cross-brace bar 5-3, eddy flow member 5-4, described longitudinal bracing bar 5-2 sticks together with cross-brace bar 5-3 and is welded to connect in the position that axially intersects, eddy flow member 5-4 is welded in the side of longitudinal bracing bar 5-2, only is connected with longitudinal bracing bar 5-2.
Embodiment 3
Present embodiment except that following technical characterictic with embodiment 1: the shape and structure of described eddy flow web plate 5 is as shown in Figure 6, comprise web plate frame 5-1, support bar 5-6, eddy flow member 5-4 between broken line support bar 5-5, broken line repeatedly, the described support bar of broken line repeatedly 5-5 is fixedlyed connected with web plate frame 5-1, connect that support bar 5-6 forms web plate between broken line adding between the two adjacent support bar of the broken line repeatedly 5-5, support bar 5-6 is connected to form cellular (regular hexagon) grid between broken line support bar 5-5 and broken line repeatedly; Described eddy flow member 5-4 is connected in repeatedly on the tie point of support bar 5-6 between broken line support bar 5-5 and broken line.Heat-transfer pipe 6 pass repeatedly in the regular hexagon that support bar 5-6 between broken line support bar 5-5 and broken line constitutes and with eddy flow member 5-4 axially form circular tangent.

Claims (8)

1, a kind of shell-and-tube heat exchanger of eddy flow web plate supporting tube bank, comprise housing, heat-transfer pipe, heat-transfer pipe support plate, tube sheet, described tube sheet is arranged at two ends in the housing, in housing, be provided with the heat-transfer pipe support plate between the tube sheet of two ends, described heat-transfer pipe passes the heat-transfer pipe support plate and is connected with tube sheet, it is characterized in that: described heat-transfer pipe support plate is the eddy flow web plate, and the eddy flow web plate is provided with the eddy flow member.
2, the shell-and-tube heat exchanger of eddy flow web plate supporting tube bank according to claim 1, it is characterized in that: described eddy flow web plate comprises web plate frame, longitudinal bracing bar, cross-brace bar, eddy flow member, the vertical setting and all fixedlying connected with the web plate frame mutually of described longitudinal bracing bar and cross-brace bar, described eddy flow member is connected on the axial crosspoint of longitudinal bracing bar and cross-brace bar.
3, the shell-and-tube heat exchanger of eddy flow web plate supporting tube bank according to claim 2, it is characterized in that: described eddy flow member is positioned at a side of longitudinal bracing bar or cross-brace bar, only is connected with longitudinal bracing bar or cross-brace bar.
4, the shell-and-tube heat exchanger of eddy flow web plate supporting tube bank according to claim 2, it is characterized in that: described eddy flow member is between longitudinal bracing bar and cross-brace bar, and its two ends are connected with longitudinal bracing bar and cross-brace bar respectively.
5, the shell-and-tube heat exchanger of eddy flow web plate supporting tube bank according to claim 1, it is characterized in that: described eddy flow web plate comprises web plate frame, support bar, eddy flow member between broken line support bar, broken line repeatedly, the described support bar of broken line is repeatedly fixedlyed connected with the web plate frame, between two adjacent support bars of broken line repeatedly support bar between broken line is set, described eddy flow member is connected in repeatedly on the tie point of support bar between broken line support bar and broken line.
6, according to the shell-and-tube heat exchanger of each described eddy flow web plate supporting tube bank of claim 1~5, it is characterized in that: described eddy flow member is the helical ribbon of one section band helical angle, and the axial shape of described helical ribbon is circular.
7, the shell-and-tube heat exchanger of eddy flow web plate supporting tube bank according to claim 6, it is characterized in that: described circle is the circumcircle of each heat-transfer pipe adjacent with described helical ribbon.
8, the shell-and-tube heat exchanger of eddy flow web plate supporting tube bank according to claim 6, it is characterized in that: relative total anglec of rotation is 90 ° a integral multiple between the described helical ribbon two ends.
CN 200420088741 2004-09-29 2004-09-29 Shell-and-tube heat exchange for vortex net board supporting tube bundle Expired - Lifetime CN2739555Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420088741 CN2739555Y (en) 2004-09-29 2004-09-29 Shell-and-tube heat exchange for vortex net board supporting tube bundle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420088741 CN2739555Y (en) 2004-09-29 2004-09-29 Shell-and-tube heat exchange for vortex net board supporting tube bundle

Publications (1)

Publication Number Publication Date
CN2739555Y true CN2739555Y (en) 2005-11-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100334415C (en) * 2004-09-29 2007-08-29 华南理工大学 Shell-and-tube heat exchanger of vortx net plate support pipe bundle and its forced heat transfer method
CN100498180C (en) * 2007-07-11 2009-06-10 华南理工大学 Rectangular tube bundle heat exchanger adopting swirl plate support and its intensified heat-conduction method
CN105387615A (en) * 2015-12-23 2016-03-09 安贵 Small multifunctional water heater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100334415C (en) * 2004-09-29 2007-08-29 华南理工大学 Shell-and-tube heat exchanger of vortx net plate support pipe bundle and its forced heat transfer method
CN100498180C (en) * 2007-07-11 2009-06-10 华南理工大学 Rectangular tube bundle heat exchanger adopting swirl plate support and its intensified heat-conduction method
CN105387615A (en) * 2015-12-23 2016-03-09 安贵 Small multifunctional water heater
CN105387615B (en) * 2015-12-23 2018-07-27 安贵 Small-size multifunction water heater

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Effective date of abandoning: 20040929

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