CN114963816A - Micro corrugated plate type heat exchanger - Google Patents
Micro corrugated plate type heat exchanger Download PDFInfo
- Publication number
- CN114963816A CN114963816A CN202210646067.7A CN202210646067A CN114963816A CN 114963816 A CN114963816 A CN 114963816A CN 202210646067 A CN202210646067 A CN 202210646067A CN 114963816 A CN114963816 A CN 114963816A
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- Prior art keywords
- heat exchange
- plate
- exchange unit
- plates
- corrugated
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
Abstract
The invention discloses a micro corrugated plate type heat exchanger, which relates to the technical field of heat exchange equipment and comprises a plate bundle core body, wherein the plate bundle core body comprises a first heat exchange unit and a second heat exchange unit which are alternately stacked, the first heat exchange unit and the second heat exchange unit respectively comprise heat exchange plates and partition plates, the heat exchange plates comprise micro corrugations and straight planes, the partition plates of the first heat exchange unit are two straight plates which are parallel to each other, a straight flow channel is formed between the two straight plates by the adjacent first heat exchange unit and the second heat exchange unit, the partition plates of the second heat exchange unit are two L-shaped plates which are arranged oppositely, and a Z-shaped flow channel is formed between the two L-shaped plates by the adjacent first heat exchange unit and the adjacent second heat exchange unit. According to the invention, the first heat exchange units and the second heat exchange units are alternately arranged, and the straight flow channels and the Z-shaped flow channels are alternately formed in the plate bundle core body, so that the respective flow channels of the two fluids are provided, and the heat exchange is realized.
Description
Technical Field
The invention relates to the technical field of heat exchange equipment, in particular to a micro corrugated plate type heat exchanger.
Background
At present, a PCHE heat exchanger is widely applied to the fields of LNG floating storage and regasification, nuclear power, thermal power and other Brayton cycle power generation, hydrogen production, hydrogen storage, hydrogen charging and the like, and has the advantages of compact structure, high heat exchange efficiency, high temperature resistance, high pressure resistance and the like.
The photochemical etching is to process a micro-channel structure with the equivalent diameter of 1-2 mm on a metal flat plate, the characteristic determines that the thickness of the adopted metal plate cannot be lower than the equivalent diameter of the micro-channel, the metal weight required by the unit heat exchange area is increased, the metal material of an etched part is wasted, the metal material is difficult to recover in the etching solution, and the technical equipment cost of the photochemical etching processing technology is high, so that the search for a heat exchanger structure which can replace the photochemical etching and has the same heat exchange effect is one of the subjects pursued by the manufacturers.
Disclosure of Invention
The invention provides a micro corrugated plate type heat exchanger, which solves the technical problem of heat exchange efficiency.
In order to solve the technical problems, the invention provides a micro corrugated plate type heat exchanger, which comprises a plate bundle core body, wherein the plate bundle core body comprises a first heat exchange unit and a second heat exchange unit which are alternately stacked, the first heat exchange unit and the second heat exchange unit respectively comprise a heat exchange plate and a partition plate superposed on the heat exchange plate, the heat exchange plate comprises micro corrugations positioned in the middle and a flat surface arranged around the micro corrugations, and the partition plate is arranged on the flat surface;
the partition plate of the first heat exchange unit is two parallel straight plates, and a straight flow channel is formed between the straight plates by the adjacent first heat exchange unit and the second heat exchange unit;
the partition plates of the second heat exchange units are two L-shaped plates which are arranged oppositely, two sides of each L-shaped plate cover two adjacent sides of the straight surface, the length of one side of each L-shaped plate is smaller than that of the corresponding side of the straight surface, and a Z-shaped flow channel is formed between the two L-shaped plates by the adjacent first heat exchange units and the adjacent second heat exchange units;
the flow direction of the straight flow channel is the same as or opposite to that of the middle flow channel of the Z-shaped flow channel.
Furthermore, the fine corrugations comprise at least two corrugation groups, each corrugation group is formed by protrusions and grooves which are alternately arranged in the heat exchange plate, the corrugation groups are obliquely arranged relative to the straight surface, and adjacent corrugation groups are arranged on the heat exchange plate in a fishbone shape.
Furthermore, the corrugated groups arranged on the first heat exchange unit correspond to the corrugated groups arranged on the second heat exchange unit one by one, and the inclination direction of the corrugated group on the first heat exchange unit and the inclination direction of the corresponding corrugated group on the second heat exchange unit are arranged in a crossed manner on a horizontal plane.
Further, the sum of the height of the protrusions on the heat exchange plate and the depth of the grooves on the heat exchange plate is consistent with the thickness of the partition plate.
Further, the plate bundle core further comprises two press plates between which the first heat exchange units and the second heat exchange units are alternately stacked.
Furthermore, round holes are formed in the four corner ends of the pressing plate, and butt joint holes which are coaxial with the round holes are formed in the heat exchange plate and the partition plate.
Further, the first heat exchange unit, the second heat exchange unit and the pressing plate are welded through vacuum diffusion to form the plate bundle core body.
Compared with the related art, the micro corrugated plate type heat exchanger provided by the invention has the following beneficial effects:
according to the invention, the first heat exchange units and the second heat exchange units are alternately arranged, the straight flow channels and the Z-shaped flow channels are alternately formed in the plate bundle core body, and the flow directions of the middle flow channels of the straight flow channels and the Z-shaped flow channels are the same or opposite, so that the respective flow channels of the two fluids are provided, and the heat exchange is realized;
according to the invention, through the arrangement of the micro-corrugations of the heat exchange plate, the reticular flow structures are formed in the straight flow channels and the Z-shaped flow channels which are alternately arranged, and compared with the existing simple straight-line-shaped flow structure or Z-shaped flow structure, the reticular flow structure is more beneficial to convective heat exchange;
the invention can form a heat exchange device with a larger structure by assembling the plate bundle core body and then performing fusion welding combination, and solves the problem that the width and length dimensions of the plate sheet of the heat exchanger core body are restricted by the processing capacity of the existing etching equipment and diffusion welding equipment.
Drawings
FIG. 1 is a schematic structural view of a plate bundle core of the present invention when it is not stacked;
FIG. 2 is a schematic view of a heat exchange plate according to the present invention;
FIG. 3 is a schematic structural view of a straight flow channel according to the present invention;
FIG. 4 is a schematic view of a Z-shaped flow channel according to the present invention;
FIG. 5 is a schematic diagram of a fine corrugation formed after stacking a first heat exchange unit and a second heat exchange unit according to the present invention;
FIG. 6 is a schematic structural view (unassembled) of a first embodiment of the present invention;
FIG. 7 is a schematic structural view (unassembled) of a second embodiment of the present invention;
in the figure: 1. a plate bundle core; 1a, a first heat exchange unit; 1b, a second heat exchange unit; 1c, a direct current channel; 1d, Z-shaped flow channels; 1e, a butt joint hole; 11. a heat exchange plate; 111. fine corrugation; 111a, a protrusion; 111b, a groove; 112. flat surface; 12. a partition plate; 12a, a straight plate; 12b, an L-shaped plate; 13. pressing a plate; 131. a circular hole.
Detailed Description
As shown in fig. 6 and 7, the present invention provides a micro corrugated plate heat exchanger including a plate bundle core 1 including first and second heat exchange units 1a and 1b alternately stacked, and a header including first, second, and third fluid inlet and outlet headers 2, 3, 4, and 5.
The specific structure of the bundle core is explained below:
as shown in fig. 1, the common structure of the first heat exchange unit 1a and the second heat exchange unit 1b is as follows: all include a heat transfer board 11 with superpose in a baffle 12 on the heat transfer board 11, and wherein heat transfer board 11 all includes fine ripple 111 that is located the middle part and centers on fine ripple 111 just sets up in fine ripple 111 straight face 112 all around, baffle 12 set up in on the straight face 112.
The first heat exchange unit 1a and the second heat exchange unit 1b in the present invention are different in structure firstly:
as shown in fig. 3, the partition plate 12 of the first heat exchange unit 1a is two parallel straight plates 12a, when the heat exchange plates are rectangular, the fine corrugations are rectangular, the straight surfaces are in a rectangular structure, so the length of the straight plates is set to be the same as the length of the heat exchange plates and cover the straight surfaces, so when the first heat exchange unit and the second heat exchange unit are stacked, a straight flow channel 1c is formed between the straight plates by the adjacent first heat exchange unit and the adjacent second heat exchange unit, which is shown in fig. 3.
As shown in fig. 4, the partition plate 12 of the second heat exchange unit 1b is two L-shaped plates 12b arranged oppositely, two sides of each L-shaped plate cover two adjacent sides of the straight surface, and the length of one side of each L-shaped plate is smaller than that of the corresponding side of the straight surface. As shown in fig. 4, the vertical side of the L-shaped plate is the same as the width of the flat surface, the horizontal side of the L-shaped plate is smaller than the length of the flat surface, so that two openings are formed at the diagonal corners of the heat exchange plate rectangle and in the length direction of the flat surface, so that when the adjacent first heat exchange unit and second heat exchange unit are stacked, the adjacent first heat exchange unit and second heat exchange unit form a Z-shaped flow channel 1d between the two L-shaped plates, which is shown in fig. 4.
In the above, the flow direction of the formed straight flow passage 1c may be the same as or opposite to the flow direction of the flow passage in the middle of the Z-shaped flow passage 1d, and preferably, the flow direction is opposite, that is, a flat-counterflow manner may be formed in the plate bundle core, thereby achieving the effect of counterflow heat exchange.
The second difference between the first heat exchange unit 1a and the second heat exchange unit 1b in the present invention is:
as shown in fig. 2, the fine corrugations 111 on the heat exchanger plate comprise at least two corrugation groups, each corrugation group being formed by protrusions 111a and grooves 111b alternating in the heat exchanger plate, and the corrugation groups are arranged in an inclined manner with respect to the flat surface 112, i.e. the protrusions or grooves and the flat surface have an inclined angle in their length direction, which is preferably 45 °; thus, the adjacent corrugated groups are arranged on the heat exchange plate in a fishbone shape, namely the first group of corrugated groups and the second group of corrugated groups are opposite in inclination direction, and the two groups of corrugated groups are arranged on the heat exchange plate in a fishbone shape; the inclination of the second group of corrugated groups is opposite to that of the third group of corrugated groups, so that the inclination directions of the first group of corrugated groups and the third group of corrugated groups are the same, and the second group of corrugated groups and the third group of corrugated groups are arranged in a fishbone pattern manner on the heat exchange plate and are alternately arranged.
As can be seen from fig. 1, when stacking is performed, the number and the positions of the corrugated groups arranged on the first heat exchange unit 1a correspond to those of the corrugated groups arranged on the second heat exchange unit 1b one by one, and more importantly, the inclined direction of each corrugated group on the first heat exchange unit and the inclined direction of the corresponding corrugated group on the second heat exchange unit are arranged to intersect on a horizontal plane, so that after the stacking and assembling are completed, the downward groove structure of the first heat exchange unit and the upward protrusion structure of the second heat exchange unit form line contact, and the downward groove and the upward protrusion structure intersect, that is, a mesh-shaped flow structure can be formed between the first heat exchange unit and the second heat exchange unit, which can be seen in detail in the structure shown in fig. 5; and a netlike circulation structure is formed between the second heat exchange unit and the first heat exchange unit below the second heat exchange unit and between the downward groove structure of the second heat exchange unit and the upward protrusion structure of the first heat exchange unit below the second heat exchange unit, so that the netlike circulation structure can be formed between the first heat exchange unit and the second heat exchange unit which are alternately arranged.
In the above, in order to realize the line contact of the protrusions and the grooves, the sum of the protrusion height of the protrusions 111a on the heat exchange plate and the concave depth of the grooves 111b on the heat exchange plate is consistent with the thickness of the separator 12, so that the mesh-shaped flow structure can be formed when stacking.
Still further, the plate bundle core further includes two pressing plates 13, and the first heat exchange unit and the second heat exchange unit are alternately stacked between the two pressing plates 13, so that the pressing plates 13 are integrally formed with the first heat exchange unit 1a and the second heat exchange unit 1b to form the plate bundle core 1.
The processing process of the plate bundle core body specifically comprises the following steps: the four corners of the pressing plate 13 are provided with round holes 131, and simultaneously, the heat exchange plate 11 and the partition plate 12 are provided with butt-joint holes 1e coaxially arranged with the round holes, the required heat exchange plate 11 is formed by punching through a die, the heat exchange plate 11, the partition plate 12 and the pressing plate 13 are stacked in the above manner, when the plate bundle core 1 is assembled, four pins arranged on an assembling and pressing platform penetrate through the four round holes 131 of the pressing plate 13, so that the positioning effect can be achieved, meanwhile, the round holes are arranged so as not to influence the connection of an external part and not to cause the internal leakage or the external leakage of media on two sides, so that the assembly of the plate bundle core 1 is completed, after the assembly is completed, the plate bundle core is formed by diffusion welding, so that the structure shown in fig. 6 can be formed, and the heat exchanger can be obtained by assembling a tube box and the plate bundle core.
It should be noted that a plurality of plate bundle cores 1 can be combined by welding to form a larger plate bundle core, and a larger heat exchanger can be realized by matching with a header, i.e. the structure shown in fig. 7.
And (3) heat exchange process:
the description is made with reference to fig. 6:
a fluid enters from the first fluid inlet header 2 into the mesh flow-through structure along the straight flow path and flows out from the first fluid outlet header 3; the other fluid enters from the second fluid inlet channel box 4 to flow along the net-shaped flow structure on the Z-shaped flow channels and flows out from the second fluid outlet channel box 5, in the process, the fluid on the straight flow channel and the middle flow channel in the Z-shaped flow channels form counter flow, and the two fluids exchange heat in the counter flow process.
Claims (7)
1. A micro-corrugated plate heat exchanger comprising a plate bundle core (1), characterized in that the plate bundle core comprises first heat exchange units (1a) and second heat exchange units (1b) stacked alternately, each of the first and second heat exchange units comprising a heat exchange plate (11) and a partition plate (12) superimposed on the heat exchange plate, the heat exchange plate comprising micro-corrugations (111) in the middle and flat faces (112) arranged around the micro-corrugations, the partition plate being arranged on the flat faces;
the partition plate of the first heat exchange unit is two parallel straight plates (12a), and a straight flow channel (1c) is formed between the straight plates by the adjacent first heat exchange unit and the second heat exchange unit;
the partition plates of the second heat exchange units are two L-shaped plates (12b) which are arranged oppositely, two sides of each L-shaped plate cover two adjacent sides of the straight surface, the length of one side of each L-shaped plate is smaller than that of the corresponding side of the straight surface, and a Z-shaped flow channel (1d) is formed between the two L-shaped plates by the adjacent first heat exchange units and the adjacent second heat exchange units;
the flow direction of the straight flow channel is the same as or opposite to that of the middle flow channel of the Z-shaped flow channel.
2. A fine corrugated plate heat exchanger according to claim 1, wherein the fine corrugations comprise at least two corrugation groups, each corrugation group being formed by alternating ridges (111a) and grooves (111b) in the heat exchanger plate, the corrugation groups being arranged obliquely with respect to the flat plane and in a herringbone arrangement between adjacent corrugation groups on the heat exchanger plate.
3. The fine corrugated plate heat exchanger according to claim 2, wherein the corrugated groups of the first heat exchange unit are in one-to-one correspondence with the corrugated groups of the second heat exchange unit, and the inclined direction of the corrugated group of the first heat exchange unit and the inclined direction of the corresponding corrugated group of the second heat exchange unit are arranged to intersect with each other in a horizontal plane.
4. A fine corrugated plate heat exchanger according to claim 2, wherein the sum of the height of the projections on the heat exchange plates and the depth of the recesses on the heat exchange plates corresponds to the thickness of the partition plate.
5. A fine corrugated plate heat exchanger according to claim 1, wherein the plate bundle core further comprises two press plates (13), between which the first and second heat exchange units are alternately stacked.
6. A fine corrugated plate heat exchanger according to claim 5, wherein the pressure plate is provided with round holes (131) at its four corners, and the heat exchange plate and the partition plate are provided with abutting holes (1e) coaxially arranged with the round holes.
7. A fine corrugated plate heat exchanger according to claim 5 wherein the first heat exchange unit, the second heat exchange unit, and the pressure plate are vacuum diffusion welded to form the plate bundle core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210646067.7A CN114963816A (en) | 2022-06-08 | 2022-06-08 | Micro corrugated plate type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210646067.7A CN114963816A (en) | 2022-06-08 | 2022-06-08 | Micro corrugated plate type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114963816A true CN114963816A (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210646067.7A Pending CN114963816A (en) | 2022-06-08 | 2022-06-08 | Micro corrugated plate type heat exchanger |
Country Status (1)
| Country | Link |
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| CN (1) | CN114963816A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116329900A (en) * | 2023-05-25 | 2023-06-27 | 甘肃蓝科石化高新装备股份有限公司 | Manufacturing method of plate heat exchanger plate bundle for air energy storage |
-
2022
- 2022-06-08 CN CN202210646067.7A patent/CN114963816A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116329900A (en) * | 2023-05-25 | 2023-06-27 | 甘肃蓝科石化高新装备股份有限公司 | Manufacturing method of plate heat exchanger plate bundle for air energy storage |
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