CN103017579A - Plate-fin type heat exchanger with fluid being flowing back and forth in channel - Google Patents
Plate-fin type heat exchanger with fluid being flowing back and forth in channel Download PDFInfo
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- CN103017579A CN103017579A CN2012105536232A CN201210553623A CN103017579A CN 103017579 A CN103017579 A CN 103017579A CN 2012105536232 A CN2012105536232 A CN 2012105536232A CN 201210553623 A CN201210553623 A CN 201210553623A CN 103017579 A CN103017579 A CN 103017579A
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Abstract
The invention relates to a plate-fin type heat exchanger with fluid being flowing back and forth in a channel. Cold channels and hot channels inside the plate-fin type heat exchanger are arranged in a layered and crossed manner and are separated by channel clapboards, and heat transfer fins are arranged in the channels; one or more horizontal adjusting battens which are horizontally arranged are arranged in each channel of the heat exchanger to separate the channel into a plurality of horizontal flow passes in the height direction; the horizontal flow passes are connected in series end to end by vertical flow passes in each channel; fluid participating in heat exchanger flows through each horizontal flow pass and each vertical flow pass in sequence to form repeated back-and-forth flow in each channel; through setting the widths of each horizontal flow pass and each vertical flow pass in each channel, the plate-fin type heat exchanger is easy to enable the fluid in each channel to keep in a reasonable range; and even if the fluid is subjected to phase change in the heat exchanger to cause that the volume and the flow rate of an inlet are very remarkably different from those of an outlet, and the reasonable flow rate distribution can be achieved by using the plate-fin type heat exchanger. The plate-fin type heat exchanger has the advantages of easily realizing flow rate regulation and distribution of the fluid, improving the efficiency of the heat changer, saving the occupied space and remarkably lowering the manufacturing cost.
Description
Technical field
The present invention relates to a kind of plate-fin heat exchanger, particularly a kind of inner fluid passage mobile plate-fin heat exchanger of turning back.
Background technology
Plate-fin heat exchanger has compact conformation, heat transfer efficiency high, compares with traditional shell-and-tube heat exchanger, and its heat transfer efficiency improves 20-30%, and cost can reduce by 50%, now has been widely used in the fields such as air separation, petrochemical industry, Aero-Space.Existing plate-fin heat exchanger is mainly by being welded along the fin of main flow direction setting, each passage outward flange strip of paper used for sealing, the end socket cavity that is welded on heat exchanger two, inlet tube and the outlet on the end socket cavity in shell, heat exchanger inner passage, heat exchanger channel dividing plate, each passage.Its inner passage is separated by channel partition, is welded with the thermofin that single direction is arranged in the passage, the cold and hot fluid that participates in heat exchange respectively internally cold passage and the passage of heat between flow through, cold passage and passage of heat interval are arranged.
Be subject to the characteristics of plate-fin heat exchanger itself and present welding procedure and production technique, for specific heat exchanger, in its effective heat exchanging segment, channel cross-sectional area equates everywhere, but often there is significant difference in the averag density of its internal flow in the inlet and outlet of heat exchanging segment, and also there is significant difference in corresponding fluid volume flow in inlet and outlet.This flow velocity that will cause the heat exchanger internal flow is along the direction generation marked change of flowing.Because during actual engineering was used, flow can not be too large through the pressure drop of heat exchanger, so the rate of flow of fluid of heat exchanger inside can not be too high; In addition, when having two phase flow in the heat exchanger, flow velocity is crossed the low heat exchanger bottom that can cause and is produced hydrops, affects heat exchange efficiency.When there is larger difference in the volume flow of fluid in porch and exit that participates in heat exchange, be controlled at all the time in certain scope (can not too high can not be excessively low) in order to make rate of flow of fluid, single plate-fin heat exchanger can't satisfy the demands.Existing method is that the plate-fin heat exchanger that uses a plurality of different channel cross-sectional areas is connected in series (setting principle is, fluid volume flow is got over general goal, and the channel cross-sectional area of heat exchanger is larger), and composing plate fin heat exchanger group is applied in the engineering.With respect to single plate-fin heat exchanger, there is significant shortcoming in the plate-fin heat exchanger group in application: Average heat transfer efficient is low, and production cost enlarges markedly, and it is large to take up room, production process complexity and difficulty are large, and service life is shorter and fault rate is higher (more welding junction and connecting pipe are arranged).
Summary of the invention
Be subject to prior art, when the fluid that participates in heat exchange in the heat exchanger when there are larger difference in the density in porch and exit and temperature, single plate-fin heat exchanger can not make rate of flow of fluid be controlled at all the time certain scope (can not too high can not be excessively low).The present invention is directed to this problem, a kind of novel structure is provided, has made inner fluid passage simple, the with low cost mobile plate-fin heat exchanger of turning back.
Technical scheme of the present invention is as follows:
A kind of inner fluid passage provided by the invention mobile plate-fin heat exchanger of turning back, it comprises:
The outer cover of heat exchanger 1 that is consisted of by the vertical coverboard of left and right side; The interval is positioned over the vertical passage dividing plate 2 between described left and right vertical coverboard; Edge between edge between the vertical passage dividing plate 2 that described left and right vertical coverboard is adjacent and adjacency channel vertical passage dividing plate 2 intervals is respectively equipped with the vertical edge of horizontal edge strip of paper used for sealing and left and right sides strip of paper used for sealing to form heat exchanger channels; Described heat exchanger channels is divided into the passage of heat spaced apart and cold passage,
Be welded in respectively hot fluid upper cover cavity 13 and the hot fluid low head cavity 11 of described outer cover of heat exchanger upper end and outer cover of heat exchanger lower end; Weld and be communicated in the hot fluid inlet tube 12 of described hot fluid upper cover cavity 13 ends; Weld and be communicated in the hot fluid outlet 10 of described hot fluid low head cavity 11 ends;
Be welded in respectively cold fluid upper cover cavity 23 and the cold fluid low head cavity 21 of described outer cover of heat exchanger upper side and outer cover of heat exchanger lower side; Weld and be communicated in the cold fluid outlet 22 of described cold fluid upper cover cavity 23 ends; Weld and be communicated in the cold fluid inlet tube 20 of institute cold fluid low head cavity 21 ends;
Described passage of heat internal structure is as follows:
Consist of that the interval is welded with hot flow path Level tune lath 17 on the two vertical passage dividing plates 2 of the described passage of heat, described hot flow path Level tune lath 17 horizontal widths are less than described vertical passage dividing plate 2 horizontal widths; Arbitrary described hot flow path Level tune lath 17, there are two end points in the horizontal direction in it, one of end points with consist of this passage of heat about one of two vertical edge strip of paper used for sealings 9 link to each other and the adjacent different vertical edge strip of paper used for sealing 9 of two hot flow path Level tune laths, 17 connections; Another end points of hot flow path Level tune lath 17 is end points in the passage of heat, in the described passage of heat end points and not be the vertical runner 19 of hot fluid between the vertical edge strip of paper used for sealing 9 that this hot flow path Level tune lath 17 is connected; The vertical runner 19 of described hot fluid is a coffin, it is surrounded by four edges: one is the vertical straight line at end points place in the passage of heat, it two is the horizontal edge strip of paper used for sealing 8 of adjacent this passage of heat of formation in the adjacent hot flow path Level tune lath 17 in top or top, it three is the horizontal edge strip of paper used for sealing 8 of adjacent this passage of heat of formation in the adjacent hot flow path Level tune lath 17 in below or below, and it four is the vertical edge strip of paper used for sealing 9 that is not connected with this hot flow path Level tune lath 17; Mid portion between the horizontal edge strip of paper used for sealing 8 of the passage of heat and the hot flow path Level tune lath 17 that is adjacent, perhaps the mid portion between the two adjacent hot flow path Level tune laths 17 is hot fluid horizontal run 18; The left and right sides of arbitrary described hot fluid horizontal run 18 links to each other with the vertical runner 19 of hot fluid respectively, perhaps a side of the left and right sides of described hot fluid horizontal run 18 links to each other with the vertical runner 19 of hot fluid, and opposite side links to each other with hot fluid inlet tube 12 or the hot fluid outlet 10 of hot fluid runner; Described hot fluid horizontal run 18 inside arrange hot flow path horizontal heat transfer fin 16;
Described cold channel interior structure is as follows:
Consist of that the interval is welded with cold runner Level tune lath 27 on the two vertical passage dividing plates 2 of described cold passage, described cold runner Level tune lath 27 horizontal widths are less than described vertical passage dividing plate 2 horizontal widths; Arbitrary there are two end points in the horizontal direction in described cold runner Level tune lath 27, one of end points with consist of this cold passage about one of two vertical edge strip of paper used for sealings 31 link to each other and the adjacent different vertical edge strip of paper used for sealing 31 of two cold runner Level tune laths, 27 connections; Another end points of cold runner Level tune lath 27 is end points in the cold passage, in the described cold passage end points and not be the vertical runner 29 of cold fluid between the vertical edge strip of paper used for sealing 31 that this cold runner Level tune lath 27 is connected, the vertical runner 29 of described cold fluid is a coffin, it is surrounded by four edges: one is the vertical straight line at end points place in the cold passage, it two is the horizontal edge strip of paper used for sealing 30 of adjacent this cold passage of formation in the adjacent cold runner Level tune lath 27 in top or top, it three is the horizontal edge strip of paper used for sealing 30 of adjacent this cold passage of formation in the adjacent cold runner Level tune lath 27 in below or below, and it four is the vertical edge strip of paper used for sealing 31 that is not connected with this cold runner Level tune lath 27; Mid portion between the horizontal edge strip of paper used for sealing 30 of cold passage and the cold runner Level tune lath 27 that is adjacent, perhaps the mid portion between the two adjacent cold runner Level tune laths 27 is cold fluid horizontal run 28, the left and right sides of arbitrary described cold fluid horizontal run 28 links to each other with the vertical runner 29 of cold fluid respectively, perhaps a side of the left and right sides of described cold fluid horizontal run 28 links to each other with the vertical runner 29 of cold fluid, and opposite side links to each other with cold fluid inlet tube 20 or cold fluid outlet 22; Described cold fluid horizontal run 28 inside arrange cold runner horizontal heat transfer fin 26;
Described hot fluid upper cover cavity 13 and described hot fluid low head cavity 11 are connected with all passage of heat respectively; Described cold fluid upper cover cavity 23 and described cold fluid low head cavity 21 are connected with all cold passage respectively.
The vertical runner 19 interior block thermofins 15 of hot flow path discrete type that arrange of described hot fluid, the vertical runner 29 interior block thermofins 25 of cold runner discrete type that arrange of described cold fluid, the block thermofin 15 of hot flow path discrete type and the block thermofin 25 of cold runner discrete type are discrete cuboid, square, cylinder, tri-prismoid, pentagonal prism body, hexagonal prism or its mix and match that distributes.
The vertical runner of the vertical runner 19 of described hot fluid and cold fluid 29 is interior to arrange respectively four triangle thermofins, and described triangle thermofin is comprised of triangle horizontal heat transfer fin and two vertical thermofins of triangle that are made of vertical thermofin that two horizontal heat transfer fins consist of;
Two angle points that vertical runner 19 coffins of hot fluid are on the vertical edge of the passage of heat strip of paper used for sealing 9 link to each other with the inner point of Level tune lath passage line segment on the opposite side respectively, in addition, draw a vertical line section by end points in this Level tune lath passage to the vertical edge of this passage of heat strip of paper used for sealing 9, these three line segments are divided into 4 right angled triangle spaces with the coffin of the vertical runner 19 of hot fluid, and a triangle thermofin is set in each triangle space; Wherein, one of right-angle side arranges the vertical thermofin of triangle in two triangle spaces of the vertical edge of passage of heat strip of paper used for sealing 9 place straight lines, in two triangle spaces triangle horizontal heat transfer fin is set in addition; Leave to satisfy the uniform mobile gap of fluid mixing between four triangle thermofins;
The coffin of the vertical runner 29 of cold fluid, it is in two angle points on the vertical edge of the cold passage strip of paper used for sealing 31, link to each other with the inner point of Level tune lath passage line segment on the opposite side respectively, in addition, draw a vertical line section by end points in this Level tune lath passage to this vertical edge of cold passage strip of paper used for sealing 31, these three line segments are divided into 4 right angled triangle spaces with the coffin of the vertical runner 29 of cold fluid, and a triangle thermofin is set in each triangle space; Wherein, one of right-angle side arranges the vertical thermofin of triangle in two triangle spaces of the vertical edge of cold passage strip of paper used for sealing 31 place straight lines, in two triangle spaces triangle horizontal heat transfer fin is set in addition; Leave to satisfy the uniform mobile gap of fluid mixing between four triangle thermofins.
The horizontal width of the vertical runner 19 of hot fluid in the inner fluid passage of the present invention mobile plate-fin heat exchanger of turning back, the same passage of heat reduces gradually along the hot fluid flow direction.
The horizontal width of the vertical runner 29 of cold fluid in the inner fluid passage of the present invention mobile plate-fin heat exchanger of turning back, same cold passage increases gradually along the cold fluid direction that flows.
The vertical width of the hot fluid horizontal run 18 in the inner fluid passage of the present invention mobile plate-fin heat exchanger of turning back, the same passage of heat reduces gradually along the hot fluid flow direction.
The vertical width of the cold fluid horizontal run in the inner fluid passage of the present invention mobile plate-fin heat exchanger of turning back, same cold passage increases gradually along the cold fluid direction that flows.
The inner fluid passage of the present invention mobile plate-fin heat exchanger of turning back, in four right angles of the coffin of the vertical runner 19 of described hot fluid, one of right-angle side is two right angle inside edges of the vertical edge of passage of heat strip of paper used for sealing 9 place straight lines, and one of the right-angle side of vertical runner 29 coffins of described cold fluid is two right angle inside edges of the vertical edge of cold passage strip of paper used for sealing 31 place straight lines, be respectively equipped with hot flow path triangle deflector 14 and cold runner triangle deflector 24, the contact-making surface of described triangle deflector and fluid is plane or the cambered surface that caves inward.
The inner fluid passage of the present invention mobile plate-fin heat exchanger of turning back in the same passage of heat, is arranged at the wing of the horizontal heat transfer fin in each hot fluid horizontal run 18 apart from satisfying, and along the direction of hot fluid flow, wing is apart from reducing gradually; In the same cold passage, be arranged at the wing of each cold fluid horizontal run 28 interior horizontal heat transfer fin apart from satisfying, along the direction that cold fluid flows, wing is apart from increasing gradually.
The inner fluid passage of the present invention mobile plate-fin heat exchanger of turning back, arbitrary hot fluid horizontal run 18 in the described passage of heat, the hot flow path horizontal heat transfer fin 16 that arranges in it is comprised of fins set, each fin that forms described fins set, its wing is apart from satisfying, from the bottom to top, wing is apart from increasing gradually; Arbitrary cold fluid horizontal run 28 in the described cold passage, the cold runner horizontal heat transfer fin 26 that arranges in it is comprised of fins set, and form the wing of each fin of described fins set apart from satisfying: wing is apart from increasing gradually from the bottom to top.
Above-mentioned disclosure has intactly been described essential characteristic of the present invention, those skilled in the art can pass through these content understandings basic thought of the present invention, and can admit, the NM implementation form of other the present invention, such as the specific constructive form of the parts such as different wing types, end socket, different multiple flow layouts etc. are also in the present invention's spirit and claim scope.
Advantage of the present invention: a kind of new type of plate fin heat exchanger that the present invention relates to, can be by regulating the width of horizontal run and vertical runner, change the sectional area of runner, and then the flow velocity of control fluid in heat exchanger, make flow when heat exchanger is inner, even there are the difference of highly significant in the averag density of fluid and volume flow at the entrance and exit place, its flow velocity in heat exchanger channel inside also is controlled in the predetermined scope all the time, uses single plate-fin heat exchanger to satisfy the demands.Compare with the heat exchanger package that a plurality of plate-fin heat exchanger series connection form, this structure Average heat transfer efficient is high, and production cost significantly reduces, and it is little to take up room, production process is simple and technical difficulty is little, lower welding junction and the connecting pipe still less of longer service life and fault rate; By dissimilar fins is set in horizontal run, use multiple fin with different wing distances to make up, and arrange and regulate intensive punching type fin or discrete type heat transfer fin in the vertical runner, it is more even that this structure can make fluid distribute in heat exchanger channel, and heat exchange efficiency is higher.
Description of drawings
Fig. 1 is the turn back structural representation of mobile plate-fin heat exchanger of inner fluid passage of the present invention;
Fig. 2 is the schematic cross section of the passage of heat of Fig. 1;
Fig. 3 is hot fluid flow schematic diagram in the exchanger heat passage;
Fig. 4 is the schematic cross section of the cold passage of Fig. 1;
Fig. 5 is the mobile schematic diagram of cold fluid in the cold passage of heat exchanger;
Fig. 6 is the rectangle discrete type wing schematic diagram in the vertical runner;
Fig. 7 is the square discrete type wing schematic diagram in the vertical runner;
Fig. 8 arranges four to cut into leg-of-mutton thermofin schematic diagram in the vertical runner;
Fig. 9 is that three kinds of different wings make up layout drawing (profilograph) apart from fin in the horizontal run;
Figure 10 is that guide face is the triangle deflector structure schematic diagram on plane;
Figure 11 is that guide face is the triangle deflector structure schematic diagram of inner concave arc surface.
The specific embodiment
Embodiment 1:
Present embodiment provides a kind of plate-fin heat exchanger, can be used for the Cryogenic mixed-refrigerants throttle refrigeration system, realizes 100K warm area refrigeration.See Fig. 1,2,3,4,5,6,9 and Figure 10, the inner fluid passage mobile plate-fin heat exchanger of turning back, it comprises:
The outer cover of heat exchanger 1 that is consisted of by the vertical coverboard of left and right side; The interval is positioned over the vertical passage dividing plate 2 between described left and right vertical coverboard; Edge between edge between the vertical passage dividing plate 2 that described left and right vertical coverboard is adjacent and adjacency channel vertical passage dividing plate 2 intervals is respectively equipped with the vertical edge of horizontal edge strip of paper used for sealing and left and right sides strip of paper used for sealing to form heat exchanger channels; Described heat exchanger channels is divided into the passage of heat spaced apart and cold passage,
Be welded in respectively hot fluid upper cover cavity 13 and the hot fluid low head cavity 11 of described outer cover of heat exchanger upper end and outer cover of heat exchanger lower end; Weld and be communicated in the hot fluid inlet tube 12 of described hot fluid upper cover cavity 13 ends; Weld and be communicated in the hot fluid outlet 10 of institute hot fluid low head cavity 11 ends;
Be welded in respectively cold fluid upper cover cavity 23 and the cold fluid low head cavity 21 of described outer cover of heat exchanger upper side and outer cover of heat exchanger lower side; Weld and be communicated in the cold fluid outlet 22 of described cold fluid upper cover cavity 23 ends; Weld and be communicated in the cold fluid inlet tube 20 of institute cold fluid low head cavity 21 ends;
Described passage of heat internal structure is as follows:
Consisting of on the two vertical passage dividing plates of the described passage of heat respectively, the interval is welded with hot flow path Level tune lath 17, adjacent hot flow path Level tune lath end links to each other with the vertical edges of boards of two vertical passage dividing plates respectively, and described hot flow path Level tune lath 17 horizontal widths are less than described vertical passage dividing plate horizontal width; Mid portion between the hot flow path Level tune lath 17 is hot fluid horizontal run chamber, and two sidepieces between the hot flow path Level tune lath 17 are divided into the vertical flow passage chamber of hot fluid; Horizontal heat transfer fin 16 is housed to form hot fluid horizontal run 18 in the described hot fluid horizontal run; The block heat transfer fin 15 of the discrete discrete type that distributes of welding is to form the vertical runner 19 of hot fluid in the vertical runner of described hot fluid;
Described cold channel interior structure is as follows:
Consisting of on the two vertical passage dividing plates of described cold fluid runner respectively, the interval is welded with cold runner Level tune lath 27, adjacent cold runner Level tune lath 27 ends link to each other with the vertical edges of boards of two vertical passage dividing plates respectively, and described cold runner Level tune lath 27 horizontal widths are less than described vertical passage dividing plate horizontal width; Mid portion between the cold runner Level tune lath is cold fluid horizontal run chamber, and two sidepieces between the cold runner Level tune lath 27 are divided into the vertical flow passage chamber of cold fluid; Horizontal heat transfer fin 26 is housed to form cold fluid horizontal run 28 in the described cold fluid horizontal run; The discrete block heat transfer fin 25 that distributes of welding is to form the vertical runner 29 of cold fluid in the vertical runner of described cold fluid;
Described hot fluid upper cover cavity 13 and described hot fluid low head cavity 11 are connected with all passage of heat respectively; Described cold fluid upper cover cavity 23 and described cold fluid low head cavity 21 are connected with all cold passage respectively.
Hot and cold two fluid streams of present embodiment are carried out heat exchange in this heat exchanger, the inner cold passage of heat exchanger and passage of heat layering intersect places.In each cold passage, the cold runner Level tune lath of 10 horizontal positioned is set in this heat exchanger, cold passage is separated into 11 horizontal run and 10 shape runners of turning back that vertical runner forms; In each passage of heat, be provided with the hot flow path Level tune lath of 8 horizontal positioned in the heat exchanger, the passage of heat is separated into 9 horizontal run and 8 shape runners of turning back that vertical runner forms.
Cold fluid is by inlet tube 20 inflow heat exchangers, enter the cold passage of each layer by cold fluid low head cavity 21, fluid in each cold passage each horizontal run 28 and the vertical runner 29 of flowing through of turning back from the bottom to top, converge and by outlet 22 outflow heat exchangers, as shown in Figure 4 and Figure 5 at cold fluid upper cover cavity 23.The horizontal run of diverse location and vertical width of flow path are set according to the volume flow of local fluid in the passage, and flow velocity is all maintained in the predetermined scope at entrance side and the outlet side of passage.Cold fluid ceaselessly absorbs the heat that passes from hot fluid in flow process, its average fluid density reduces along flow direction, and volume flow strengthens along flow direction.For making rate of flow of fluid keep homogeneous in whole passage, each vertical width of flow path satisfies from the bottom to top gradually increase; The horizontal run width satisfies from the bottom to top gradually increase.In 11 horizontal run in the cold passage, except of below, all be provided with the horizontal direction saw tooth fin of same wing distance in all the other 10 horizontal run, and a horizontal run of below is provided with the fins set that the fin by three kinds of different wing distances combines, as shown in Figure 9, its concrete arrangement form is, wing is respectively 1.5mm apart from s from the bottom to top, 2.5mm, 4mm.
Hot fluid is by inlet tube 12 inflow heat exchangers, enter each layer passage of heat by hot fluid upper cover cavity 13, hot fluid in each passage of heat each horizontal run and the vertical runner of flowing through of from top to bottom turning back, converge and by outlet 10 outflow heat exchangers, as shown in Figures 2 and 3 at hot fluid low head cavity.The horizontal run of diverse location and vertical width of flow path are set according to the volume flow of local fluid in the passage, and flow velocity is all maintained in the predetermined scope at entrance side and the outlet side of passage.Hot fluid does not stop to spread out of heat to cold fluid in flow process, and its average fluid density increases along flow direction, and volume flow reduces along flow direction.In 9 horizontal run in the passage of heat, except 2 of below, all be provided with the horizontal direction saw tooth fin of same wing distance in all the other 7 horizontal run, and 2 runners of below respectively are provided with the fins set that the fin by three kinds of different wing distances combines, as shown in Figure 9, its concrete arrangement form is, wing is respectively 2.5mm apart from s from the bottom to top, 4mm, 6mm.
In order to optimize a kind of plate-fin heat exchanger of the present invention, rectangle decentralized wing is set in the vertical runner of cold passage and the passage of heat, such as Fig. 6, be conducive to the even distribution of fluid in runner; The place, right angle that horizontal run in cold passage and the passage of heat and vertical runner cross arranges the triangle deflector, this triangle deflector and the face that heat exchanging fluid directly contacts be the plane as shown in figure 10.
Embodiment 2: a kind of plate-fin heat exchanger that the present invention relates to, be used for large-scale natural gas liquefying refrigerating system, and realize natural gas liquefaction.
Substantially the same manner as Example 1, different is: in each cold passage, be provided with the cold runner Level tune lath of 6 horizontal positioned in the heat exchanger, passage is separated into 7 horizontal run and 6 shape runners of turning back that vertical runner forms; In each passage of heat, be provided with the hot flow path Level tune lath of 5 horizontal positioned in the heat exchanger, passage is separated into 6 horizontal run and 5 shape runners of turning back that vertical runner forms.In 7 horizontal run in the cold passage, except 3 of below, all be provided with the horizontal direction saw tooth fin of same wing distance in all the other 4 horizontal run, and nethermost 3 runners respectively are provided with the fins set that the fin by 4 kinds of different wing distances combines, and its concrete arrangement form is, wing is respectively 1.2mm apart from s from the bottom to top, 1.8mm, 2.5mm, 4mm.In 6 horizontal run in the passage of heat, except 2 of below, all be provided with the horizontal direction saw tooth fin of same wing distance in all the other 4 horizontal run, and 2 runners of below respectively are provided with the fins set that the fin by 4 kinds of different wing distances combines, and its concrete arrangement form is, wing is respectively 1.8mm apart from s from the bottom to top, 2.5mm, 4mm, 6mm.
In order to optimize a kind of plate-fin heat exchanger of the present invention, the fin with apertures of the vertical direction layout of intensive punching is set in the vertical runner of cold passage and the passage of heat, be conducive to the even distribution of fluid in runner; The place, right angle that crosses at horizontal run and vertical runner arranges the triangle deflector, and this triangle deflector is the cambered surface that caves inward with the face that heat exchanging fluid directly contacts, as shown in figure 11.
Embodiment 3: a kind of plate-fin heat exchanger that the present invention relates to, be used for large-scale natural gas liquefying refrigerating system, and realize natural gas liquefaction.
Substantially the same manner as Example 1, different is: square decentralized wing is set in the vertical runner of cold passage and the passage of heat, such as Fig. 7, is conducive to the even distribution of fluid in runner.
Embodiment 4: a kind of plate-fin heat exchanger that the present invention relates to, be used for the mixed work medium for throttling refrigeration system, and realize 90K warm area refrigeration.
Substantially the same manner as Example 1, different is: arrange four and cut into leg-of-mutton thermofin in the vertical runner of cold passage and the passage of heat, as shown in Figure 8, there is spacing 10mm between leg-of-mutton thermofin is mutual, four cut in the leg-of-mutton thermofin, and two thermofins adjacent with horizontal run are for being horizontally disposed with; Two is vertical setting with the non-conterminous thermofin of horizontal run.
Claims (10)
1. an inner fluid passage mobile plate-fin heat exchanger of turning back, it comprises:
The outer cover of heat exchanger (1) that is consisted of by the vertical coverboard of left and right side; The interval is positioned over the vertical passage dividing plate (2) between described left and right vertical coverboard; Edge between edge between the vertical passage dividing plate (2) that described left and right vertical coverboard is adjacent and adjacency channel vertical passage dividing plate (2) interval is respectively equipped with the vertical edge of horizontal edge strip of paper used for sealing and left and right sides strip of paper used for sealing to form heat exchanger channels; Described heat exchanger channels is divided into the passage of heat spaced apart and cold passage,
Be welded in respectively hot fluid upper cover cavity (13) and the hot fluid low head cavity (11) of described outer cover of heat exchanger upper end and outer cover of heat exchanger lower end; Weld and be communicated in the hot fluid inlet tube (12) of described hot fluid upper cover cavity (13) end; Weld and be communicated in the hot fluid outlet (10) of described hot fluid low head cavity (11) end;
Be welded in respectively cold fluid upper cover cavity (23) and the cold fluid low head cavity (21) of described outer cover of heat exchanger upper side and outer cover of heat exchanger lower side; Weld and be communicated in the cold fluid outlet (22) of described cold fluid upper cover cavity (23) end; Weld and be communicated in the cold fluid inlet tube (20) of institute's cold fluid low head cavity (21) end;
Described passage of heat internal structure is as follows:
The upper interval of two vertical passage dividing plates (2) that consists of the described passage of heat is welded with hot flow path Level tune lath (17), and described hot flow path Level tune lath (17) horizontal width is less than described vertical passage dividing plate (2) horizontal width; Arbitrary described hot flow path Level tune lath (17), there are two end points in the horizontal direction in it, one of end points with consist of this passage of heat about one of two vertical edge strip of paper used for sealings (9) link to each other and the different vertical edge strip of paper used for sealing (9) of adjacent two hot flow path Level tune laths (17) connection; Another end points of hot flow path Level tune lath (17) is end points in the passage of heat, in the described passage of heat end points and not be the vertical runner of hot fluid (19) between the vertical edge strip of paper used for sealing (9) that this hot flow path Level tune lath (17) is connected; The vertical runner of described hot fluid (19) is a coffin, it is surrounded by four edges: one is the vertical straight line at end points place in the passage of heat, it two is the horizontal edge strip of paper used for sealing (8) of adjacent this passage of heat of formation in the adjacent hot flow path Level tune lath (17) in top or top, it three is the horizontal edge strip of paper used for sealing (8) of adjacent this passage of heat of formation in the adjacent hot flow path Level tune lath (17) in below or below, and it four is the vertical edge strip of paper used for sealing (9) that is not connected with this hot flow path Level tune lath (17); Mid portion between the horizontal edge strip of paper used for sealing (8) of the passage of heat and the hot flow path Level tune lath (17) that is adjacent, perhaps the mid portion between the two adjacent hot flow path Level tune laths (17) is hot fluid horizontal run (18); The left and right sides of arbitrary described hot fluid horizontal run (18) links to each other with the vertical runner of hot fluid (19) respectively, perhaps a side of the left and right sides of described hot fluid horizontal run (18) links to each other with the vertical runner of hot fluid (19), and opposite side links to each other with hot fluid inlet tube (12) or the hot fluid outlet (10) of hot fluid runner; Described hot fluid horizontal run (18) inside arranges hot flow path horizontal heat transfer fin (16);
Described cold channel interior structure is as follows:
The upper interval of two vertical passage dividing plates (2) that consists of described cold passage is welded with cold runner Level tune lath (27), and described cold runner Level tune lath (27) horizontal width is less than described vertical passage dividing plate (2) horizontal width; There are two end points in the horizontal direction in arbitrary described cold runner Level tune lath (27), one of end points with consist of this cold passage about one of two vertical edge strip of paper used for sealings (31) link to each other and the different vertical edge strip of paper used for sealing (31) of adjacent two cold runner Level tune laths (27) connection; Another end points of cold runner Level tune lath (27) is end points in the cold passage, in the described cold passage end points and not be the vertical runner of cold fluid (29) between the vertical edge strip of paper used for sealing (31) that this cold runner Level tune lath (27) is connected, the vertical runner of described cold fluid (29) is a coffin, it is surrounded by four edges: one is the vertical straight line at end points place in the cold passage, it two is the horizontal edge strip of paper used for sealing (30) of adjacent this cold passage of formation in the adjacent cold runner Level tune lath (27) in top or top, it three is the horizontal edge strip of paper used for sealing (30) of adjacent this cold passage of formation in the adjacent cold runner Level tune lath (27) in below or below, and it four is the vertical edge strip of paper used for sealing (31) that is not connected with this cold runner Level tune lath (27); Mid portion between the horizontal edge strip of paper used for sealing (30) of cold passage and the cold runner Level tune lath (27) that is adjacent, perhaps the mid portion between the two adjacent cold runner Level tune laths (27) is cold fluid horizontal run (28), the left and right sides of arbitrary described cold fluid horizontal run (28) links to each other with the vertical runner of cold fluid (29) respectively, perhaps a side of the left and right sides of described cold fluid horizontal run (28) links to each other with the vertical runner of cold fluid (29), and opposite side links to each other with cold fluid inlet tube (20) or cold fluid outlet (22); Described cold fluid horizontal run (28) inside arranges cold runner horizontal heat transfer fin (26);
Described hot fluid upper cover cavity (13) and described hot fluid low head cavity (11) are connected with all passage of heat respectively; Described cold fluid upper cover cavity (23) and described cold fluid low head cavity (21) are connected with all cold passage respectively.
2. by the inner fluid passage claimed in claim 1 mobile plate-fin heat exchanger of turning back, it is characterized in that, the block thermofin (15) of hot flow path discrete type is set in the vertical runner of described hot fluid (19), the block thermofin (25) of cold runner discrete type is set in the vertical runner of described cold fluid (29), and the block thermofin (15) of hot flow path discrete type and the block thermofin of cold runner discrete type (25) are discrete cuboid, square, cylinder, tri-prismoid, pentagonal prism body, hexagonal prism or its mix and match that distributes.
3. by the claim 1 described inner fluid passage mobile plate-fin heat exchanger of turning back, it is characterized in that, in the vertical runner of described hot fluid (19) and the vertical runner of cold fluid (29) four triangle thermofins are set respectively, described triangle thermofin is comprised of triangle horizontal heat transfer fin and two vertical thermofins of triangle that are made of vertical thermofin that two horizontal heat transfer fins consist of;
The vertical runner of hot fluid (19) coffin is in two angle points on the vertical edge of the passage of heat strip of paper used for sealing (9), link to each other with the inner point of Level tune lath passage line segment on the opposite side respectively, in addition, draw a vertical line section by end points in this Level tune lath passage to the vertical edge of this passage of heat strip of paper used for sealing (9), these three line segments are divided into 4 right angled triangle spaces with the coffin of the vertical runner of hot fluid (19), and a triangle thermofin is set in each triangle space; Wherein, one of right-angle side arranges the vertical thermofin of triangle in two triangle spaces of the vertical edge of hot flow path strip of paper used for sealing (9) place straight line, in two triangle spaces triangle horizontal heat transfer fin is set in addition; Leave to satisfy the uniform mobile gap of fluid mixing between four triangle thermofins;
Two angle points that are on the vertical edge of the cold passage strip of paper used for sealing (31) of the vertical runner of cold fluid (29) coffin link to each other with the inner point of Level tune lath passage line segment on the opposite side respectively, in addition, draw a vertical line section by end points in this Level tune lath passage to this vertical edge of cold passage strip of paper used for sealing (31), these three line segments are divided into 4 right angled triangle spaces with the coffin of the vertical runner of cold fluid (29), and a triangle thermofin is set in each triangle space; Wherein, one of right-angle side arranges the vertical thermofin of triangle in two triangle spaces of the vertical edge of cold passage strip of paper used for sealing (31) place straight line, in two triangle spaces triangle horizontal heat transfer fin is set in addition; Leave to satisfy the uniform mobile gap of fluid mixing between four triangle thermofins.
4. by the inner fluid passage claimed in claim 1 mobile plate-fin heat exchanger of turning back, it is characterized in that the horizontal width of the vertical runner of hot fluid (19) in the same passage of heat reduces gradually along the hot fluid flow direction.
5. by the inner fluid passage claimed in claim 1 mobile plate-fin heat exchanger of turning back, it is characterized in that the horizontal width of the vertical runner of cold fluid (29) in the same cold passage increases gradually along the cold fluid direction that flows.
6. by the inner fluid passage claimed in claim 1 mobile plate-fin heat exchanger of turning back, it is characterized in that the vertical width of the hot fluid horizontal run (18) in the same passage of heat reduces gradually along the hot fluid flow direction.
7. by the inner fluid passage claimed in claim 1 mobile plate-fin heat exchanger of turning back, it is characterized in that the vertical width of the cold fluid horizontal run in the same cold passage increases gradually along the cold fluid direction that flows.
8. by claim 1 or the 2 described inner fluid passages mobile plate-fin heat exchanger of turning back, it is characterized in that, in four right angles of the coffin of the vertical runner of described hot fluid (19), one of right-angle side is two right angle inside edges of the vertical edge of passage of heat strip of paper used for sealing (9) place straight line, and the coffin of the vertical runner of described cold fluid (29), one of right-angle side is two right angle inside edges of the vertical edge of cold passage strip of paper used for sealing (31) place straight line, be respectively equipped with hot flow path triangle deflector (14) and cold runner triangle deflector (24), the contact-making surface of described triangle deflector and fluid is plane or the cambered surface that caves inward.
9. by the inner fluid passage claimed in claim 1 mobile plate-fin heat exchanger of turning back, it is characterized in that, in the same passage of heat, be arranged at the wing of the horizontal heat transfer fin in each hot fluid horizontal run (18) apart from satisfying, along the direction of hot fluid flow, wing is apart from reducing gradually; In the same cold passage, be arranged at the wing of the interior horizontal heat transfer fin of each cold fluid horizontal run (28) apart from satisfying, along the direction that cold fluid flows, wing is apart from increasing gradually.
10. by claim 1 or the 9 described inner fluid passages mobile plate-fin heat exchanger of turning back, it is characterized in that, arbitrary hot fluid horizontal run (18) in the described passage of heat, the hot flow path horizontal heat transfer fin (16) that arranges in it is comprised of fins set, each fin that forms described fins set, its wing is apart from satisfying, and from the bottom to top, wing is apart from increasing gradually; Arbitrary cold fluid horizontal run (28) in the described cold passage, the cold runner horizontal heat transfer fin (26) that arranges in it is comprised of fins set, forms each fin wing of described fins set apart from increasing gradually from the bottom to top.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210553623.2A CN103017579B (en) | 2012-12-18 | 2012-12-18 | Plate-fin type heat exchanger with fluid being flowing back and forth in channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210553623.2A CN103017579B (en) | 2012-12-18 | 2012-12-18 | Plate-fin type heat exchanger with fluid being flowing back and forth in channel |
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| CN103017579A true CN103017579A (en) | 2013-04-03 |
| CN103017579B CN103017579B (en) | 2014-10-08 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103256839A (en) * | 2013-05-22 | 2013-08-21 | 中国科学院理化技术研究所 | Back-turning flow plate-fin heat exchanger |
| CN103791741A (en) * | 2014-01-20 | 2014-05-14 | 同济大学 | Phase transition plate heat exchanger |
| CN108917439A (en) * | 2018-08-30 | 2018-11-30 | 无锡格林沃科技有限公司 | New-type phase change radiator |
| CN109556435A (en) * | 2018-12-29 | 2019-04-02 | 无锡博利达换热器有限公司 | Convenient for the dedicated plate-fin heat exchanger for examining installation |
| CN109556436A (en) * | 2018-12-29 | 2019-04-02 | 无锡博利达换热器有限公司 | Heavy oil plate-fin heat exchanger |
| CN111473679A (en) * | 2020-03-30 | 2020-07-31 | 上海卫星装备研究所 | Micro-channel heat collector based on 3D printing technology |
| CN113048811A (en) * | 2019-12-27 | 2021-06-29 | 江苏晨宇科技有限公司 | Bending type parallel flow heat exchanger |
| CN113804029A (en) * | 2021-09-23 | 2021-12-17 | 哈尔滨工业大学 | Side income formula head structure suitable for small passageway plate heat exchanger |
| CN114061338A (en) * | 2021-11-19 | 2022-02-18 | 北京德普润新材料科技有限公司 | Heat exchange unit, single-stage heat exchanger and multi-stage heat exchanger |
| CN114688900A (en) * | 2022-03-04 | 2022-07-01 | 杭州制氧机集团股份有限公司 | Multi-module combined plate-fin heat exchanger |
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| CN103256839B (en) * | 2013-05-22 | 2015-09-23 | 中国科学院理化技术研究所 | To turn back stream plate-fin heat exchanger |
| CN103256839A (en) * | 2013-05-22 | 2013-08-21 | 中国科学院理化技术研究所 | Back-turning flow plate-fin heat exchanger |
| CN103791741A (en) * | 2014-01-20 | 2014-05-14 | 同济大学 | Phase transition plate heat exchanger |
| CN108917439A (en) * | 2018-08-30 | 2018-11-30 | 无锡格林沃科技有限公司 | New-type phase change radiator |
| CN108917439B (en) * | 2018-08-30 | 2024-04-19 | 无锡格林沃科技有限公司 | Phase change radiator |
| CN109556436B (en) * | 2018-12-29 | 2023-11-28 | 无锡博利达换热器有限公司 | Plate-fin heat exchanger for high-viscosity oil |
| CN109556435A (en) * | 2018-12-29 | 2019-04-02 | 无锡博利达换热器有限公司 | Convenient for the dedicated plate-fin heat exchanger for examining installation |
| CN109556436A (en) * | 2018-12-29 | 2019-04-02 | 无锡博利达换热器有限公司 | Heavy oil plate-fin heat exchanger |
| CN113048811A (en) * | 2019-12-27 | 2021-06-29 | 江苏晨宇科技有限公司 | Bending type parallel flow heat exchanger |
| CN111473679A (en) * | 2020-03-30 | 2020-07-31 | 上海卫星装备研究所 | Micro-channel heat collector based on 3D printing technology |
| CN113804029A (en) * | 2021-09-23 | 2021-12-17 | 哈尔滨工业大学 | Side income formula head structure suitable for small passageway plate heat exchanger |
| CN113804029B (en) * | 2021-09-23 | 2023-12-26 | 哈尔滨工业大学 | Side-in type end socket structure suitable for micro-channel plate heat exchanger |
| CN114061338B (en) * | 2021-11-19 | 2023-11-21 | 北京德普润新材料科技有限公司 | Heat exchange unit, single-stage heat exchanger and multi-stage heat exchanger |
| CN114061338A (en) * | 2021-11-19 | 2022-02-18 | 北京德普润新材料科技有限公司 | Heat exchange unit, single-stage heat exchanger and multi-stage heat exchanger |
| CN114688900A (en) * | 2022-03-04 | 2022-07-01 | 杭州制氧机集团股份有限公司 | Multi-module combined plate-fin heat exchanger |
| CN114688900B (en) * | 2022-03-04 | 2024-02-20 | 杭氧集团股份有限公司 | Multi-module combined plate-fin heat exchanger |
| CN115342674A (en) * | 2022-08-15 | 2022-11-15 | 广东林顿重工有限公司 | Shape-variable efficient heat exchange equipment |
| CN115342674B (en) * | 2022-08-15 | 2023-09-05 | 广东林顿重工有限公司 | High-efficient heat transfer equipment of variable shape |
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