CN210014685U - Plate-fin heat exchanger - Google Patents
Plate-fin heat exchanger Download PDFInfo
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- CN210014685U CN210014685U CN201920653184.XU CN201920653184U CN210014685U CN 210014685 U CN210014685 U CN 210014685U CN 201920653184 U CN201920653184 U CN 201920653184U CN 210014685 U CN210014685 U CN 210014685U
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Abstract
The utility model relates to a plate-fin heat exchanger, including bottom surface and joint sealing, both ends all link up the side about the bottom surface, and the upper and lower both ends of bottom surface all install the end plate, the joint sealing is located the outside of end plate, and the upper left end of side installs high-pressure working medium import, the lower right end link up the high-pressure working medium export of side, the bottom middle part of joint sealing has linked up the import of low pressure working medium. The utility model has the advantages that: in the plate-fin heat exchanger, a high-pressure working medium is input from a high-pressure working medium inlet on the side surface of a shell and flows to a high-pressure working medium outlet along a high-pressure working medium channel in a heat exchange plate bundle; then, the low-pressure working medium is input into the sealing box from a low-pressure working medium inlet of the sealing box and then enters a low-pressure working medium channel in the heat exchange plate bundle to flow to a low-pressure working medium outlet; the heat exchange plate pair is ensured to be always under the action of positive pressure difference (external pressure is greater than internal pressure), so that the heat exchange plate pair is in a compression stress state, and the integrity of a pressure boundary between a high-pressure working medium and a low-pressure working medium is kept.
Description
Technical Field
The utility model relates to a plate-fin heat exchanger technical field specifically is a plate-fin heat exchanger.
Background
The plate-fin heat exchanger is generally composed of partition plates, fins, seal strips and guide strips, wherein the fins, the guide strips and the seal strips are arranged between two adjacent partition plates to form an interlayer, namely a channel, the interlayer is overlapped according to different fluid modes and is brazed into a whole to form a plate bundle, and the plate bundle is the core of the plate-fin heat exchanger.
The general plate-fin heat exchanger can not detect products according to standards, the manufacturing cost can not be effectively controlled, a positive pressure difference design is not adopted, the heat exchange plate pair is not in an external pressure stress state, the reliability is lower than the internal pressure stress state of a diffusion welding printed circuit board heat exchanger, the pressure bearing force of the shell can not be enhanced when the heat exchange plate bundle is welded with the bottom surface of the shell, the appearance of the heat exchanger is regular, and the reduction of space occupation when multiple modules are combined is not facilitated.
Disclosure of Invention
The invention aims to provide a plate-fin heat exchanger, which aims to solve the problems that the common plate-fin heat exchanger proposed in the background technology cannot detect products according to standards, the manufacturing cost cannot be effectively controlled, a positive pressure difference design is not adopted, the heat exchange plate pair is not in an external pressure stress state, the reliability is lower than that of the internal pressure stress state of a diffusion welding printed circuit board heat exchanger, the pressure bearing force of a shell cannot be enhanced due to the welding of a heat exchange plate bundle and the bottom surface of the shell, the appearance of the heat exchanger is regular, and the space occupation cannot be reduced when multiple modules are combined.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a plate-fin heat exchanger, includes bottom surface and joint box, both ends all link up the side about the bottom surface, and the upper and lower both ends of bottom surface all install the end plate, the joint box is located the outside of end plate, and the upper left end of side installs high pressure working medium import, the lower right end of side links up high pressure working medium export, the bottom middle part of joint box links up low pressure working medium import, and the top middle part of joint box settles and have low pressure working medium export, the bottom surface links up and has restrainted heat transfer board, and the arrangement of restrainting of heat transfer board has heat transfer board pair, the internally mounted of heat transfer board pair has the heat transfer board, and the passageway is worn to be equipped with in the middle part of heat transfer board, all be connected with the rib of passageway, and the both sides edge welded seal of two heat transfer boards of heat transfer board.
Preferably, the number of the bottom surfaces is two, the bottom surfaces are flat plates, and the side surfaces are semi-arc-shaped cylinders.
Preferably, the heat exchange plate bundle is connected with the bottom surface in a welding mode.
Preferably, the heat exchange plate pair is formed by mirror symmetry arrangement, and the front and the back of the heat exchange plate are both provided with channels and ribs.
Preferably, the hydraulic diameter of the heat exchange plate bundle is 1-2 mm, and meanwhile, the heat exchange plate is sealed by welding for a gap penetrating through the end plate.
Preferably, an inlet and an outlet are arranged between the two ends of the heat exchange plate bundle and the end plate in a penetrating manner through a gap.
Preferably, the channels and the ribs of the heat exchange plate are manufactured by adopting the processes of precision casting, machining, chemical etching and the like, and the channels and the ribs are in a linear or wavy line shape.
Preferably, the bottom of the shell is fixedly connected with the heat exchange plate bundle through a tension bolt in a direction perpendicular to the heat exchange plate bundle.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. firstly, high-pressure working medium is input from a high-pressure working medium inlet on the side surface and flows to a high-pressure working medium outlet along a high-pressure working medium channel in a heat exchange plate bundle; then, the low-pressure working medium is input into the sealing box from a low-pressure working medium inlet of the sealing box and then enters a low-pressure working medium channel in the heat exchange plate bundle to flow to a low-pressure working medium outlet; ensuring that the heat exchange plate pair is always under the action of positive pressure difference (external pressure is greater than internal pressure), so that the heat exchange plate pair is in a compression stress state, and keeping the integrity of a pressure boundary between a high-pressure working medium and a low-pressure working medium; the bottom surface and the side surface bear the pressure of a high-pressure working medium, the sealing box bears the pressure of a low-pressure working medium, and the end plate bears the pressure difference between the high-pressure working medium and the low-pressure working medium; in the flowing process, high-pressure working medium and low-pressure working medium are subjected to heat transfer through the heat exchange plate; when the heat exchanger finishes working, the low-pressure side pressure is firstly discharged, then the high-pressure side pressure is discharged, the heat exchange plate pair is always under the action of positive pressure difference, and the flow of high-pressure working media and low-pressure working media in the heat exchange plate bundle is full countercurrent.
2. The heat exchanger is characterized in that a compact heat exchanger without diffusion welding is realized, the compactness is basically close to that of a printed circuit board heat exchanger, the material selection of the heat exchange plate is not limited by a diffusion welding process, more selectable material marks are provided, mature and low-cost processes are adopted in the processing and manufacturing, the product can be detected according to the standard, the manufacturing cost can be effectively controlled, a positive pressure difference design is adopted, the heat exchange plate pair is in an external pressure stress state, the reliability is higher than the internal pressure stress state of the diffusion welding printed circuit board heat exchanger, the bearing pressure of the shell is greatly enhanced by welding the heat exchange plate bundle and the bottom surface of the shell, the appearance of the heat exchanger monomers is regular, the space occupation is conveniently reduced when the multi-module combination is carried out, the plate-fin heat exchanger is used for a heat regenerator of supercritical carbon dioxide circulation, the maximum pressure is 30MPa grade, the maximum temperature.
Drawings
Fig. 1 is a schematic view of the external structure of the plate-fin heat exchanger of the present invention;
fig. 2 is a schematic view of the cross section inside the plate-fin heat exchanger of the present invention;
FIG. 3 is a schematic cross-sectional view of a heat exchange plate pair according to the present invention;
FIG. 4 is a schematic diagram of the structure of the heat exchange plate (front and back sides);
fig. 5 is a schematic cross-sectional view of an end plate of the present invention;
fig. 6 is a schematic view of the tension bolt externally disposed on the plate-fin heat exchanger of the present invention.
In the figure: 1. a bottom surface; 2. a side surface; 3. an end plate; 4. sealing the box; 5. a high pressure working medium inlet; 6. a high-pressure working medium outlet; 7. a low pressure working medium inlet; 8. a low-pressure working medium outlet; 9. a heat exchange plate bundle; 10. a pair of heat exchange plates; 11. a heat exchange plate; 12. a channel; 13. a rib; 14. and tightening the bolts.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, the present invention provides a technical solution: a plate-fin heat exchanger comprises a bottom surface 1, a side surface 2, an end plate 3, a sealing box 4, a high-pressure working medium inlet 5, a high-pressure working medium outlet 6, a low-pressure working medium inlet 7, a low-pressure working medium outlet 8, a heat exchange plate bundle 9, a heat exchange plate pair 10, a heat exchange plate 11, a channel 12, ribs 13 and tensioning bolts 14, wherein the left end and the right end of the bottom surface 1 are connected with the side surface 2, the upper end and the lower end of the bottom surface 1 are respectively provided with the end plate 3, the sealing box 4 is positioned on the outer side of the end plate 3, the left upper end of the side surface 2 is provided with the high-pressure working medium inlet 5, the right lower end of the side surface 2 is connected with the high-pressure working medium outlet 6, the middle part of the bottom end of the sealing box 4 is connected with the low-pressure working medium inlet 7, the middle part of the top end of the sealing box 4 is provided with the low, the channel 12 is connected with a rib 13, and the outer side of the bottom surface 1 is connected with a tension bolt 14;
further, the method comprises the following steps: the heat exchange plate bundle 9 with high pressure working medium and low pressure working medium is full countercurrent. The hydraulic diameter of the channel 12 of the heat exchange plate 11 is selected to be 1-1.5 mm;
according to fig. 2, a heat exchange plate bundle 9 is arranged between the bottom surfaces 1, the heat exchange plate bundle 9 is welded with the two bottom surfaces 1, and two side edges of two heat exchange plates 11 of the heat exchange plate pair 10 are welded and sealed;
according to fig. 3, two heat exchange plates 11 are attached to each other and arranged in mirror symmetry, a low-pressure fluid passage 12 is formed inside the heat exchange plate pair 10, and a high-pressure fluid passage 12 is formed between the heat exchange plate pair 10;
according to fig. 4, adjacent channels 12 are separated by ribs 13, channels 12 are formed between adjacent ribs 13, channels 12 and ribs 13 are formed by chemical etching, both ends of heat exchange plate 11 pass through end plate 3, and appropriate gaps are reserved between both ends of heat exchange plate 11 and shell 15 and end plate 3 as inlets and outlets of low-pressure fluid entering channels 12 between heat exchange plate pairs 10;
according to fig. 5, the bundle 9 of heat exchange plates passes through the end plate 3, and the gap between the pair 10 of heat exchange plates and the end plate 3 is sealed by welding;
according to fig. 6, the direction of the tension bolt 14 is perpendicular to the heat exchange plate bundle 9, and the fixing pieces at the two ends of the tension bolt 14 are welded with the bottom surface 1;
the working method of the plate-fin heat exchanger comprises the following steps:
firstly, high-pressure carbon dioxide is input from a high-pressure working medium inlet 5 and flows to a high-pressure working medium outlet 6 along a high-pressure carbon dioxide channel 12 in a heat exchange plate bundle 9; then, low-pressure carbon dioxide is input from a low-pressure working medium inlet 7 of the sealing box 4 and flows to a low-pressure working medium outlet 8 along a low-pressure channel 12 in the heat exchange plate bundle 9; ensuring that the heat exchange plate pair 10 is always under the action of positive pressure difference, enabling the heat exchange plate pair 10 to be in a compression stress state, and keeping the integrity of a pressure boundary between high-pressure carbon dioxide and low-pressure carbon dioxide; the bottom surface 1 and the side surface 2 bear the pressure of high-pressure carbon dioxide, the sealing box 4 bears the pressure of low-pressure carbon dioxide, and the end plate 3 bears the pressure difference between high-pressure carbon dioxide and low-pressure carbon dioxide; in the flowing process, the high-pressure carbon dioxide and the low-pressure carbon dioxide are subjected to heat transfer through the heat exchange plate 11; when the operation is finished, the low-pressure side pressure is firstly discharged, and then the high-pressure side pressure is discharged, so that the heat exchange plate pair 10 is always under the action of positive pressure difference. The flow direction of high pressure and low pressure carbon dioxide is the adverse current in heat transfer board bundle 9, adopts the utility model discloses a plate-fin heat exchanger, supercritical carbon dioxide regenerator's backheat efficiency can reach 95% to ensure the high efficiency of circulation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (7)
1. The utility model provides a plate-fin heat exchanger, includes bottom surface (1) and joint sealing (4), its characterized in that: the heat exchanger comprises a bottom surface (1), a sealing box (4), a high-pressure working medium inlet (5), a high-pressure working medium outlet (6), a low-pressure working medium inlet (7), a low-pressure working medium outlet (8), a heat exchange plate bundle (9), heat exchange plate pairs (10), heat exchange plates (11), channels (12), ribs (13), and two side edges of the two heat exchange plates of the heat exchange plate pair (10) are welded and sealed, wherein the left end and the right end of the bottom surface (1) are connected with the side surfaces (2), the upper end and the lower end of the bottom surface (1) are respectively provided with the end plates (3), the sealing box (4) is positioned on the outer side of the end plates (3), the upper end of the left side of the side surface (2) is provided with the high-pressure working medium inlet (5), the lower end of the right side surface (2) is connected with the high-pressure working medium outlet (6), the middle part of the bottom end of the, the outer side of the bottom surface (1) is connected with a tensioning bolt (14).
2. A plate fin heat exchanger according to claim 1, wherein: the two bottom surfaces (1) are arranged, the bottom surfaces (1) are flat plates, and the side surfaces (2) are semi-arc-shaped cylinders.
3. A plate fin heat exchanger according to claim 1, wherein: the heat exchange plate bundle (9) is connected with the bottom surface (1) in a welding manner.
4. A plate fin heat exchanger according to claim 1, wherein: the heat exchange plate pair (10) is formed by mirror symmetry arrangement, and the front and the back of the heat exchange plate (11) are provided with channels (12) and ribs (13).
5. A plate fin heat exchanger according to claim 1, wherein: the hydraulic diameter of the heat exchange plate bundle (9) is 1-2 mm, and meanwhile, the heat exchange plate pair (10) penetrates through the gap of the end plate (3) and is sealed through welding.
6. A plate fin heat exchanger according to claim 1, wherein: an inlet and an outlet are arranged between the two ends of the heat exchange plate bundle (9) and the end plate (3) in a penetrating way through a gap.
7. A plate fin heat exchanger according to claim 1, wherein: the channels (12) and the ribs (13) of the heat exchange plate (11) are manufactured by adopting the processes of precision casting, machining, chemical etching and the like, and the channels (12) and the ribs (13) are linear or wavy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920653184.XU CN210014685U (en) | 2019-05-08 | 2019-05-08 | Plate-fin heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920653184.XU CN210014685U (en) | 2019-05-08 | 2019-05-08 | Plate-fin heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210014685U true CN210014685U (en) | 2020-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920653184.XU Active CN210014685U (en) | 2019-05-08 | 2019-05-08 | Plate-fin heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210014685U (en) |
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2019
- 2019-05-08 CN CN201920653184.XU patent/CN210014685U/en active Active
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