CN101349514B - Internal and external fins intubatton type high temperature heat exchanger - Google Patents

Internal and external fins intubatton type high temperature heat exchanger Download PDF

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Publication number
CN101349514B
CN101349514B CN2008101508203A CN200810150820A CN101349514B CN 101349514 B CN101349514 B CN 101349514B CN 2008101508203 A CN2008101508203 A CN 2008101508203A CN 200810150820 A CN200810150820 A CN 200810150820A CN 101349514 B CN101349514 B CN 101349514B
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tube
fin
shell
pipe
internal
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CN101349514A (en
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王秋旺
马挺
陈秋炀
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Xian Jiaotong University
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Xian Jiaotong University
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Abstract

The invention relates to an internal and external fin bayonet-tube type high temperature exchanger, which comprises a casing, a tube box which is connected on the casing, a closed head, a longitudinal baffle, a baffle plate, tube plates of an internal tube and an external tube, a tube side inlet and outlet pipe, a casing side inlet and outlet pipe, wherein one ends of the internal tube and the external tube are respectively fixed on the tube plates of the internal tube and the external tube, and the other ends are both free ends, the internal tube is a honeycomb duct whose two ends are open, and the external tube is a heat exchange tube whose one end is open, and the other end is closed, the internal and external walls of the external tube are respectively provided with an internal fin and an external fin to form an internal and external fin bayonet-tube heat exchanging unit, and the internal fin can relatively move to the internal tube. The exchanger is divided into a high temperature shell pass and a low temperature shell pass, the components of the two shell passes are respectively produced by high temperature-resistant material and common material, also can be produced by the same material. The internal walls of the casing, the longitudinal baffle and the tube plates of the internal tube and the external tube are provided with ceramic insulating layers, and fluid on two sides of a shell is crossly flow in reverse directions. The invention can increase the heat exchange efficiency and compactness of the exchanger, reduces production cost, and can overcome the thermal stress problem, and can be applied in high temperature condition.

Description

A kind of internal and external fins intubatton type high temperature heat exchanger
Technical field
The present invention relates to a kind of shell-and-tube heat exchanger, particularly a kind of internal and external fins intubatton type high temperature heat exchanger that in industry such as chemical industry, metallurgy, glass manufacturing and the incineration of garbage, uses.
Background technology
High-temperature heat-exchanging is meant that generally medium temperature is at the heat transmission equipment more than 600 ℃, in recent years, high-temperature heat-exchanging develops towards the direction of HTHP, the operation of heat exchanger temperature of using in the industry such as, SOFC synthetic as cracking of ethylene process, hydrogen cyanide usually is higher than 1000 ℃, and the performance of this heat exchanging device has proposed very big challenge.
There are problems in traditional shell-and-tube heat exchanger: 1. high-temperature heat-exchanging internal temperature gradient is bigger, and the two ends tube sheet of conventional fixed tube-sheet heat exchanger is fixed on the housing, heat exchanger tube is fixed on the tube sheet of two ends, the thermal stress highly significant that causes heat exchanger tube and tube sheet to bear, generally adopt expansion bellow to come compensate for heat expansion at shell-side, but expansion bellow is flexible limited in one's ability, serviceability temperature also is subjected to certain restriction, and the mechanical strength of metal under hot conditions is very low, and heat exchanger can't move under hot conditions stably in a long term; 2. traditional movable tube sheets heat exchanger one end tube sheet and housing are fixed, other end tube sheet can move freely, do not produce thermal stress between tube bank and the housing, but the movable tube sheets heat exchanger heaviness, and consumption of materials is big, the cost height, and because floating head and flange are connected with sizable area, the result increases diameter of the housing, and segment fluid flow is not participated in heat exchange from the circular passage bypass between tube bank and the housing, reduce heat exchange efficiency, the working pressure of shell side is subjected to certain limitation simultaneously; 3. traditional U type pipe heat exchanger only needs a tube sheet, the tube bank retractable, do not produce thermal stress, but crooked pipe needs certain bending radius, thereby during fabrication need be with the mould bend pipe of different curvature, and the effective rate of utilization of tube sheet is reduced, and structure is not compact, and the work of the core space heat exchanging device of U type pipe tube bank has adverse influence.
There are many scholars to propose the cannula type heat exchange tube structure is applied to high-temperature heat-exchanging both at home and abroad, the heat exchanger tube of intubatton type high temperature heat exchanger has a free end, the thermal expansion of heat exchanger tube is free fully, be not subjected to any restriction, satisfy thermal expansion principle freely, avoided thermal stress issues, be suitable for very much hot environment, abroad developed and be used for fluid bed, intubatton type high temperature heat exchanger in the environment such as external firing combined cycle, but also there are some problems in existing intubatton type high temperature heat exchanger: 1. the cannula type heat exchanger tube of existing intubatton type high temperature heat exchanger generally adopts light pipe, do not add extended surfaces such as fin, thereby cause the whole heat exchange efficiency of heat exchanger not high; 2. high-temperature heat-exchanging requires to adopt the exotic material manufacturing, cost is very high, in fact the high-temperature gas passes heat exchange is cooled to can adopt the common material manufacturing fully after the lower temperature, the cost of heat exchanger can be greatly improved more than 675 ℃ according to statistics, and the high-temperature heat-exchanging heat exchanger tube of great majority design only adopts a kind of exotic material manufacturing, cause the waste of material, the cost problem has limited the application of high-temperature heat-exchanging.
Summary of the invention
In order to overcome above-mentioned weak point, the purpose of this invention is to provide a kind of internal and external fins intubatton type high temperature heat exchanger, this heat exchanger adopts the internal and external fins intubatton structure, inner and outer pipes all has free end, free wxpansion at high temperature, outer tube is equipped with inside and outside fin, can increase the heat exchange area of heat exchanger tube, thereby improves heat exchange efficiency; Heat exchanger is divided into high temperature shell side and low temperature shell side, and heat exchanger tube adopts exotic material and two kinds of material manufacturings of common material respectively at two shell sides, can save exotic material, reduces manufacturing cost; Two kinds of fluids mobilely are always reverse cross-flow what the combination of flow of two shell sides can guarantee two kinds of fluids, can improve heat exchange efficiency; The ceramic fibre thermal insulation layer is installed on the inner walls of heat exchanger, longitudinal baffle surface and inner and outer pipe tube sheet surface, and the pressure-bearing function of workpiece and heat-resisting function are separated, and can reduce the thermal stress of workpiece, improves its life-span.
Technical scheme of the present invention is achieved in that a kind of internal and external fins intubatton type high temperature heat exchanger, comprise a housing, be positioned at the bobbin carriage of housing front end and the end socket of rear end, on the shell side that housing forms longitudinal baffle and deflection plate are set, pipe tube sheet and outer tube tube sheet in the housing termination is provided with respectively, pipe side-entrance pipe and pipe side outlet pipe are set between interior pipe tube sheet and the outer tube tube sheet, shell-side inlet pipe and shell-side outlet are set on the housing of outer tube tube sheet back, interior pipe tube sheet is connected with an end of interior pipe, the outer tube tube sheet is connected with an end of outer tube, the other end of interior pipe and outer tube is free end, interior pipe is the mozzle of the equal opening in two ends, outer tube is the heat exchanger tube of end opening other end sealing, interior pipe is nested in outer tube inside, interior pipe and outer tube leave the space at free end, and outer fin is set on the outer tube outer wall, and inner fin is set on the outer tube wall.
Described longitudinal baffle one side shell side is the high temperature shell side, longitudinal baffle opposite side shell side is the low temperature shell side, be arranged in interior pipe, outer tube, inner fin and outer fin in the high temperature shell side by the exotic material manufacturing, be arranged in interior pipe, outer tube, inner fin and outer fin in the low temperature shell side by the common material manufacturing, longitudinal baffle surface, interior pipe tube sheet surface, outer tube tube sheet surface and all inwalls of housing all are provided with ceramic thermal barrier layer.
Interior pipe in the described high and low temperature shell side, outer tube, inner fin and outer fin can adopt the same material manufacturing.
Described pipe side liquid is flow to by pipe side-entrance pipe, through annular space and the inner fin between top shell side outer tube and the interior pipe, change flow direction in the terminal space of inner and outer pipes and flow to interior pipe, flow into pipe in the shell side of bottom after flowing to the front end bobbin carriage, change flow direction in the terminal space of inner and outer pipes once more and flow to annular space and inner fin between outer tube and the interior pipe, flow out by pipe side outlet pipe at last, shell fluid is flow to by the shell-side inlet pipe, via bottom shell side and top shell side, flowed out by the shell-side outlet at last, two side liquids can guarantee that in the combination of flow of two shell sides the flow direction of two side liquids is always reverse cross-flow.
Described inner fin is longitudinal ripple shape fin or vertical plain fin.
Perforate or crack on the described inner fin.
Described outer fin is whole corrugated fin, whole plain fin or circular fin.
Perforate or crack or long direction eddy generator is set or shutter is set on the described outer fin.
Described housing is cylinder or rectangular structure.
Form the double-shell heat exchanger when only there is one in described longitudinal baffle, form the muitishell heat exchanger when there is polylith in longitudinal baffle, form the monoshell pass heat exchanger when longitudinal baffle does not exist.
The present invention has the following advantages:
1, the present invention can overcome the thermal stress issues of high-temperature heat-exchanging, can be applicable to hot environment and can improve stability under the worst hot case, increases the service life;
2, the present invention can improve the heat exchange efficiency and the compactedness of high-temperature heat-exchanging;
3, the present invention can save exotic material, reduces the manufacturing cost of high-temperature heat-exchanging.
The present invention improves intubatton type high temperature heat exchanger, fin outside on the outer tube outer wall of cannula type heat exchanger tube, being provided with, inner fin is set on the outer tube wall, form the internal and external fins intubatton structure, this structure can increase heat exchange area, enhanced heat exchange, the heat exchange property of raising heat exchanger, improve the compactness of heat exchanger, especially suitable for the gas-gas heat exchange that the two side liquid coefficients of heat transfer inside and outside the heat exchanger tube are more or less the same.Inner fin of the present invention is not fixedlyed connected with interior pipe, both can relatively move, and pipe and the thermal expansion of outer tube, flexible uncorrelated mutually in can guaranteeing like this can reduce the thermal stress of inner fin, inner and outer pipes and inner and outer pipes tube sheet, improve the reliability of heat exchanger, increase the service life.
The present invention is divided into high temperature shell side and low temperature shell side by longitudinal baffle with heat exchanger, be arranged in interior pipe, outer tube, inner fin and outer fin in the high temperature shell side by the exotic material manufacturing, be arranged in interior pipe, outer tube, inner fin and outer fin in the low temperature shell side by the common material manufacturing, because the cost of high-temperature material is very high, adopt such structure under the prerequisite that does not influence the high temperature heat exchange property, to reduce the cost of high-temperature heat-exchanging.The cold fluid and hot fluid temperature difference is little in the not high or whole heat exchanger of heat exchanger serviceability temperature, and under the situation that used high cryogenic material cost is more or less the same, consider the problem that makes things convenient for of buying material and processing and manufacturing, parts also can adopt the same material manufacturing under the high low temperature shell side.
The mechanical strength of workpiece under worst hot case is very low, and the thermal stress that heat exchanger shell, longitudinal baffle and inner and outer pipes tube sheet bear under the worst hot case is very big, the present invention is provided with ceramic thermal barrier layer on all inwalls of housing, longitudinal baffle surface and inner and outer pipes tube sheet surface, the pressure-bearing function and the heat-resisting function of workpiece are separated, this structure can reduce housing, longitudinal baffle and inner and outer pipes tube sheet temperature, it is worked under lower temperature, can reduce the thermal stress of housing, longitudinal baffle and inner and outer pipes tube sheet, improve its life-span.
Cannula type heat exchanger tube inner fluid has two kinds of liquid forms, promptly flow to from the formed annular space of inner and outer pipes, flow to from interior pipe outflow with from interior pipe, flow out from the formed annular space of inner and outer pipes, the present invention combines these two kinds of liquid forms, the pipe side liquid is flow to by pipe side-entrance pipe, through annular space and the inner fin between top shell side outer tube and the interior pipe, change flow direction in the terminal space of inner and outer pipes and flow to interior pipe, flow to the interior pipe that flows into the bottom shell side behind the front end bobbin carriage, change flow direction in the terminal space of inner and outer pipes once more and flow to annular space and inner fin between outer tube and the interior pipe, flow out by pipe side outlet pipe at last, shell fluid is flow to by the shell-side inlet pipe, via bottom shell side and top shell side, flow out by the shell-side outlet at last.This structure can guarantee that the flow direction of two kinds of fluids is always reverse cross-flow, can improve the heat exchanger heat exchange efficiency.
Rectangular structure housing stringing compactness can make full use of the shell side space, can improve the compactness of heat exchanger, but the rectangular structure shell side can not be high pressure resistant, can only be used for general pressure environment; The cylindrical structure housing can be high pressure resistant, can be used for hyperbaric environment, but compactness is not as rectangular structure.Housing of the present invention provides cuboid or two kinds of structures of cylinder, can be according to concrete service condition type selecting.
When only there is one in longitudinal baffle, form the double-shell heat exchanger, form the muitishell heat exchanger when there is polylith in longitudinal baffle, form the monoshell pass heat exchanger when longitudinal baffle does not exist.General less demanding when heat exchange, when can using homogenous material to make, heat exchanger tube can select monoshell journey or double-shell heat exchanger, when heat exchange is had relatively high expectations, when need using multiple material to make, heat exchanger tube can select double-shell or muitishell heat exchanger.
Description of drawings
Fig. 1 (a) is the structural representation of high-temperature heat-exchanging of the present invention.
Fig. 1 (b) is the sectional view of cylindrical structure high-temperature heat-exchanging of the present invention.
Fig. 1 (c) is the sectional view of rectangular structure high-temperature heat-exchanging of the present invention.
Fig. 2 (a) is the internal and external fins intubatton cellular construction schematic diagram of the whole cover of the present invention chip architecture.
Fig. 2 (b) is the internal and external fins intubatton unit sectional view of the whole cover of the present invention chip architecture.
Fig. 3 (a) is the internal and external fins intubatton cellular construction schematic diagram of the outer fin structure of circle of the present invention.
Fig. 3 (b) is the internal and external fins intubatton unit sectional view of the outer fin structure of circle of the present invention.
Fig. 4 (a) adopts the structural representation of longitudinal ripple shape inner fin for the present invention.
Fig. 4 (b) adopts the structural representation of vertical straight inner fin for the present invention.
The structural representation of Fig. 5 (a) outer fin of whole corrugated for the present invention adopts.
Fig. 5 (b) adopts the structural representation of whole straight outer fin for the present invention.
Fig. 5 (c) adopts the structural representation of circular outer fin for the present invention.
Below in conjunction with accompanying drawing content of the present invention is described in further detail.
The specific embodiment
Accompanying drawing is specific embodiments of the invention.
Shown in Fig. 1 (a), internal and external fins intubatton type high temperature heat exchanger of the present invention, comprise a housing 5, be positioned at the bobbin carriage 6 of housing 5 front ends and the end socket 9 of rear end, on the shell side that housing 5 forms longitudinal baffle 10 and deflection plate 15 are set, pipe tube sheet 7 and outer tube tube sheet 8 in being provided with on housing 5 terminations are provided with pipe side-entrance pipe 1 and pipe side outlet pipe 2 between interior pipe tube sheet 7 and the outer tube tube sheet 8, shell-side inlet pipe 3 and shell-side outlet 4 are set on the housing 5 of outer tube tube sheet 8 back.Pipe 11 in being arranged in parallel on the interior pipe tube sheet 7, the outer tube 12 that is arranged in parallel on the outer tube tube sheet 8, interior pipe 11 and outer tube 12 all have a free end.Interior pipe 11 is the mozzle of the equal opening in two ends, outer tube 12 is the heat exchanger tube of front opening back-end closure, and interior pipe 11 is placed in outer tube 12 inside, and interior pipe 11 and outer tube 12 leave space 16 in the end, outer fin 14 is set on outer tube 12 outer walls, and outer fin 14 is fixedlyed connected with outer tube 12 outer walls.Longitudinal baffle 10 bottom shell sides are the high temperature shell side, be arranged in interior pipe 11, outer tube 12 and outer fin 14 in the high temperature shell side by the exotic material manufacturing, longitudinal baffle 10 top shell sides are the low temperature shell side, be arranged in interior pipe 11, outer tube 12 and outer fin 14 in the low temperature shell side by the common material manufacturing, longitudinal baffle 10 surfaces, interior pipe tube sheet 7 surfaces, outer tube tube sheet 8 surfaces and housing 5 all inwalls all are provided with ceramic thermal barrier layer 19.The cold fluid and hot fluid temperature difference is little in the not high or whole heat exchanger of heat exchanger serviceability temperature, and under the situation that used high cryogenic material cost is more or less the same, consider the problem that makes things convenient for of buying material and processing and manufacturing, the interior pipe 11 of high low temperature shell side, outer tube 12 and outer fin 14 also can adopt the same material manufacturing.The pipe side liquid is flow to by pipe side-entrance pipe 1, through the annular space between low temperature shell side outer tube 12 and the interior pipe 11, pipe 11 in the terminal space of inner and outer pipes 16 change flow directions flow to, flow to the interior pipe 11 of front end bobbin carriage 6 back inflow high temperature shell sides, after the terminal space 16 of inner and outer pipes changes flow direction once more, flow to the annular space between outer tube 12 and the interior pipe 11, flow out by pipe side outlet pipe 2 at last.Shell fluid is flow to by shell-side inlet pipe 3, via low temperature shell side and high temperature shell side, is flowed out by shell-side outlet 4 at last, and two kinds of fluids can guarantee that in the combination of flow of two shell sides the flow direction of two kinds of fluids is always reverse cross-flow, can improve heat exchange efficiency.End socket 9, bobbin carriage 6, interior pipe tube sheet 7 and outer tube tube sheet 8 all are fixedly connected on the housing 5 with flange 17, and flange 17, interior pipe tube sheet 7 and outer tube tube sheet 8 can make heat exchanger core body be convenient to installation and removal.When high-temperature gas be in low pressure, when cryogenic gas is in high pressure, shell-side inlet pipe 3 can be used as the high-temperature gas import, pipe side-entrance pipe 1 is as the cryogenic gas import, and then shell-side outlet 4, pipe side outlet pipe 2 are correspondingly as high-temperature gas outlet and cryogenic gas outlet.When high-temperature gas be in high pressure, when cryogenic gas is in low pressure, shell-side outlet 4 can be used as the cryogenic gas import, pipe side outlet pipe 2 is as the high-temperature gas import, and then shell-side inlet pipe 3, pipe side-entrance pipe 1 are correspondingly as cryogenic gas outlet and high-temperature gas outlet.Form the double-shell heat exchanger when only there is one in longitudinal baffle 10, form the muitishell heat exchanger when there is polylith in longitudinal baffle 10, form the monoshell pass heat exchanger when longitudinal baffle 10 does not exist.General less demanding when heat exchange, when can using homogenous material to make, heat exchanger tube can select monoshell journey or double-shell heat exchanger, when heat exchange is had relatively high expectations, when need using multiple material to make, heat exchanger tube can select double-shell or muitishell heat exchanger.
Shown in Fig. 1 (b), high-temperature heat-exchanging adopts the housing 5 of cylindrical shape, housing 5 is fixedlyed connected with outer tube tube sheet 8 with bolt 18 by flange 17, housing 5 intermediate arrangement longitudinal baffles 10, arrange outer tube 12 on the outer tube tube sheet 8, interior pipe 11 is nested in outer tube 12 inside, on outer tube 12 inwalls inner fin 13 is set, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, and inner fin 13 is not fixedlyed connected with interior pipe 11.
Shown in Fig. 1 (c), high-temperature heat-exchanging adopts the housing 5 of rectangular shape, housing 5 is fixedlyed connected with outer tube tube sheet 8 with bolt 18 by flange 17, housing 5 intermediate arrangement longitudinal baffles 10, arrange outer tube 12 on the outer tube tube sheet 8, interior pipe 11 is nested in outer tube 12 inside, on outer tube 12 inwalls inner fin 13 is set, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, and inner fin 13 is not fixedlyed connected with interior pipe 11.
Shown in Fig. 2 (a) and Fig. 2 (b), the internal and external fins intubatton unit adopts whole outer fin 14, and outer tube 12 1 ends are fixed on the outer tube tube sheet 8, and on the pipe tube sheet 7, the other end of interior pipe 11 and outer tube 12 was free end in interior pipe 11 1 ends were fixed on.Interior pipe tube sheet 7 surfaces and outer tube tube sheet 8 surfaces are provided with ceramic thermal barrier layer 19, and the temperature of pipe tube sheet 7 and outer tube tube sheet 8 was worked it in ceramic thermal barrier layer 19 can reduce under lower temperature, reduced thermal stress.Interior pipe 11 is the mozzle of the equal opening in two ends, outer tube 12 is the heat exchanger tube of end opening other end sealing, interior pipe 11 is nested in outer tube 12 inside, and interior pipe 11 and outer tube 12 leave space 16 in the end, outer fin 14 is set on outer tube 12 outer walls, outer fin 14 is fixedlyed connected with outer tube 12 outer walls, on outer tube 12 inwalls inner fin 13 is set, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, and inner fin 13 is not fixedlyed connected with interior pipe 11, both can relatively move, and interior pipe 11 can freely stretch vertically.The interior pipe 11 of cannula type structure and outer tube 12 have a free end, and thermal expansion is free fully, is not subjected to any restriction, satisfies thermal expansion principle freely, has avoided thermal stress issues, is suitable for very much hot environment.At outer tube 12 inner fin 13 and outer fin 14 are set, can increase heat exchange area, enhanced heat exchange improves the heat exchange property of heat exchanger, the compactness of raising heat exchanger.Inner fin 13 do not fixedly connected with interior pipe 11 and interior pipe 11 and outer tube 12 between space 16 is set, the thermal expansion of pipe 11 and outer tube 12 in can guaranteeing, flexible uncorrelated mutually, can reduce the thermal stress of inner fin 13, interior pipe 11, interior pipe tube sheet 7, outer fin 14, outer tube 12 and outer tube tube sheet 8, can improve the reliability of heat exchanger, increase the service life.Cannula type heat exchanger tube inner fluid has two kinds of liquid forms, promptly flow to, flow to, flow out from interior pipe 11 and outer tube 12 formed annular spaces from interior pipe 11 outflows with from interior pipe 11 from interior pipe 11 and outer tube 12 formed annular spaces, the present invention combines these two kinds of liquid forms, the flow direction that has guaranteed shell two side liquids is always reverse cross-flow, can improve heat exchange efficiency.
Shown in Fig. 3 (a) and Fig. 3 (b), the internal and external fins intubatton unit adopts the outer fin 14 of circular configuration, and outer tube 12 1 ends are fixed on the outer tube tube sheet 8, and on the pipe tube sheet 7, the other end of interior pipe 11 and outer tube 12 was free end in interior pipe 11 1 ends were fixed on.Interior pipe tube sheet 7 surfaces and outer tube tube sheet 8 surfaces are provided with ceramic thermal barrier layer 19.Interior pipe 11 is the mozzle of the equal opening in two ends, outer tube 12 is the heat exchanger tube of end opening other end sealing, interior pipe 11 is nested in outer tube 12 inside, interior pipe 11 and outer tube 12 leave space 16 in the end, on outer tube 12 inwalls inner fin 13 is set, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, and inner fin 13 is not fixedlyed connected with interior pipe 11, the outer fin 14 of circular configuration all is set on the outer wall of each root outer tube 12, and outer fin 14 is fixedlyed connected with outer tube 12 outer walls.
Shown in Fig. 4 (a), interior pipe 11 is nested in outer tube 12 inside, longitudinal ripple shape inner fin 13 is set on the inwall of outer tube 12, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, inner fin 13 is not fixedlyed connected with interior pipe 11, can or crack with further enhanced heat exchange in the 13 surface punchings of longitudinal ripple shape inner fin.
Shown in Fig. 4 (b), interior pipe 11 is nested in outer tube 12 inside, vertical straight inner fin 13 is set on the inwall of outer tube 12, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, inner fin 13 is not fixedlyed connected with interior pipe 11, can or crack with further enhanced heat exchange in vertical straight inner fin 13 surface punchings.
Shown in Fig. 5 (a), interior pipe 11 is nested in outer tube 12 inside, inner fin 13 is set on the inwall of outer tube 12, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, inner fin 13 is not fixedlyed connected with interior pipe 11, fin 14 outside the whole ripple is set on outer tube 12 outer walls, and outer fin 14 is fixedlyed connected with outer tube 12 outer walls, can punch on the fin 14 outside whole ripple, cracks, is provided with long direction eddy generator or shutter is set with further enhanced heat exchange.
Shown in Fig. 5 (b), interior pipe 11 is nested in outer tube 12 inside, inner fin 13 is set on the inwall of outer tube 12, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, inner fin 13 is not fixedlyed connected with interior pipe 11, on outer tube 12 outer walls, be provided with whole straight outside fin 14, outer fin 14 is fixedlyed connected with outer tube 12 outer walls, can punch on the fin 14 outside whole ripple, cracks, is provided with long direction eddy generator or shutter is set with further enhanced heat exchange.
Shown in Fig. 5 (c), interior pipe 11 is nested in outer tube 12 inside, inner fin 13 is set on the inwall of outer tube 12, inner fin 13 is fixedlyed connected with outer tube 12 inwalls, inner fin 13 is not fixedlyed connected with interior pipe 11, fin 14 outside the circle is set on outer tube 12 outer walls, and outer fin 14 is fixedlyed connected with outer tube 12 outer walls.

Claims (7)

1. internal and external fins intubatton type high temperature heat exchanger, comprise a housing (5), be positioned at the bobbin carriage (6) of housing (5) front end and the end socket (9) of rear end, on the shell side that housing (5) forms longitudinal baffle (10) and deflection plate (15) are set, pipe tube sheet (7) and outer tube tube sheet (8) in housing (5) termination is provided with respectively, pipe side-entrance pipe (1) and pipe side outlet pipe (2) are set between interior pipe tube sheet (7) and the outer tube tube sheet (8), shell-side inlet pipe (3) and shell-side outlet (4) are set on the housing (5) of outer tube tube sheet (8) back, it is characterized in that, interior pipe tube sheet (7) is connected with an end of interior pipe (11), outer tube tube sheet (8) is connected with an end of outer tube (12), the other end of interior pipe (11) and outer tube (12) is free end, interior pipe (11) is the mozzle of the equal opening in two ends, outer tube (12) is the heat exchanger tube of end opening other end sealing, interior pipe (11) is nested in outer tube (12) inside, interior pipe (11) and outer tube (12) leave space (16) at free end, on outer tube (12) outer wall outer fin (14) is set, on outer tube (12) inwall inner fin (13) is set, inner fin (13) is fixedlyed connected with outer tube (12) with outer fin (14), inner fin (13) is not fixedlyed connected with interior pipe (11), inner fin (13) can relatively move with interior pipe (11), the longitudinal baffle (10) that adopts the surface that ceramic fibre thermal insulation layer (19) is installed is divided into high temperature shell side and low temperature shell side with heat exchanger, be arranged in the interior pipe (11) in the high temperature shell side, outer tube (12), inner fin (13) and outer fin (14) are by the exotic material manufacturing, be arranged in the interior pipe (11) in the low temperature shell side, outer tube (12), inner fin (13) and outer fin (14) are by the common material manufacturing, or it is high, interior pipe (11) in the low temperature shell side, outer tube (12), inner fin (13) and outer fin (14) adopt same material manufacturing, interior pipe tube sheet (7) surface, outer tube tube sheet (8) surface and housing (5) inwall all are provided with ceramic thermal barrier layer (19).
2. internal and external fins intubatton type high temperature heat exchanger according to claim 1, it is characterized in that, the pipe side liquid is flow to by pipe side-entrance pipe (1), through annular space between top shell side outer tube (12) and the interior pipe (11) and inner fin (13), change flow direction in the terminal space of inner and outer pipes (16) and flow to interior pipe (11), flow to front end bobbin carriage (6) back and flow into pipe (11) in the shell side of bottom, change flow direction once more in the terminal space of inner and outer pipes (16), flow to annular space and inner fin (13) between outer tube (12) and the interior pipe (11), flow out by pipe side outlet pipe (2) at last, shell fluid is flow to by shell-side inlet pipe (3), via bottom shell side and top shell side, flowed out by shell-side outlet (4) at last, two side liquids guarantee that in the combination of flow of two shell sides the flow direction of two side liquids is always reverse cross-flow.
3. internal and external fins intubatton type high temperature heat exchanger according to claim 1 is characterized in that, described inner fin (13) is longitudinal ripple shape fin or vertical plain fin.
4. internal and external fins intubatton type high temperature heat exchanger according to claim 1 is characterized in that, described inner fin (13) is gone up perforate or cracked.
5. internal and external fins intubatton type high temperature heat exchanger according to claim 1 is characterized in that, described outer fin (14) is whole corrugated fin, whole plain fin or circular fin.
6. internal and external fins intubatton type high temperature heat exchanger according to claim 1 is characterized in that, described outer fin (14) is gone up perforate or cracked or long direction eddy generator is set or shutter is set.
7. internal and external fins intubatton type high temperature heat exchanger according to claim 1 is characterized in that, described housing (5) is cylinder or rectangular structure.
CN2008101508203A 2008-09-05 2008-09-05 Internal and external fins intubatton type high temperature heat exchanger Active CN101349514B (en)

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CN102419034A (en) * 2010-09-27 2012-04-18 上海富田空调冷冻设备有限公司 High-efficiency condenser
CN102721031A (en) * 2012-06-11 2012-10-10 东方电气集团东方汽轮机有限公司 Straight-flow steam generator
CN104764347B (en) * 2015-02-15 2016-05-25 中国计量学院 A kind of heat exchanger
CN105091018B (en) * 2015-08-31 2017-12-19 中冶建筑研究总院有限公司 High temperature resistant, efficient air heat exchanger
CN105485647A (en) * 2015-09-30 2016-04-13 常州倍安特动力机械有限公司 Solar thermal power generation steam generation unit
CN108981438B (en) * 2018-04-27 2019-11-15 扬州大学 A kind of heat exchanger and heat-exchange method
CN108848651B (en) * 2018-05-03 2020-07-31 安徽好润环保科技有限公司 Circulation tank for cooling liquid of electronic product
CN108800094A (en) * 2018-05-03 2018-11-13 中广核研究院有限公司 A kind of steam generator for metal fast reactor
CN110514031B (en) * 2019-07-15 2021-07-06 合肥通用机械研究院有限公司 Combined pipe type cryogenic working medium gasification heat exchange equipment

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