CN112304126B - Multi-strand medium distribution structure suitable for micro-channel plate type heat exchange equipment - Google Patents
Multi-strand medium distribution structure suitable for micro-channel plate type heat exchange equipment Download PDFInfo
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- CN112304126B CN112304126B CN202010980621.6A CN202010980621A CN112304126B CN 112304126 B CN112304126 B CN 112304126B CN 202010980621 A CN202010980621 A CN 202010980621A CN 112304126 B CN112304126 B CN 112304126B
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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
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to a heat exchanger, in particular to a multi-strand medium distribution structure suitable for micro-channel plate type heat exchange equipment. The structure is arranged at the end parts of a medium inlet and a medium outlet A and a medium inlet and a medium outlet B of the plate type heat exchange core body and comprises an end cover, a channel, a medium channel box and a connecting pipe, wherein the outlet of each medium channel layer and the inlet of each medium channel layer of the plate type heat exchange core body are respectively and correspondingly connected with at least one channel to form closed connection; the end covers are respectively arranged at the end parts of the medium inlet and outlet A and the medium inlet and outlet B of the plate type heat exchange core body, and cover the channel and the plate type heat exchange core body to form an integrated structure; the end cover is provided with a channel through hole, one side of the channel through hole, which is far away from the plate type heat exchange core body, is connected with a medium pipe box, and the medium pipe box is also provided with a connecting pipe. The invention can realize the distributed heat exchange of a plurality of streams of flow media on the basis of the prior plate process without additionally redesigning the arrangement of the plate channels of the heat exchange core body.
Description
Technical Field
The invention belongs to the field of microchannel heat exchange, and particularly relates to a multi-strand medium distribution structure suitable for microchannel plate type heat exchange equipment.
Technical Field
Heat exchange or reaction equipment adopted in the fields of energy, chemical industry, environmental protection, medicine and the like puts forward higher and higher requirements on equipment compactness and high efficiency, and the traditional heat exchange or reaction equipment is designed integrally based on the energy transport principle of two streams of media. With the development of new processes and technologies, the use of an integrated device to exchange heat between more fluids has become an effective solution to increase the compactness of systems and devices.
The wound tube type heat exchanger is a good multi-strand medium heat exchange device type. Compared with the traditional tube type heat exchanger, the heat exchanger has the remarkable advantages that: the tightly wound heat exchange tube bundle greatly improves the space compactness of the shell pass of the heat exchanger, avoids dead zones of shell pass medium flowing without baffle plates, effectively strengthens the heat transfer of the medium in the tube by the spiral heat exchange tube, improves the adaptability level to the working condition of large-temperature-difference heat exchange, and particularly can realize the simultaneous heat exchange of a plurality of tube side media by utilizing the layer distribution technology of the wound heat exchange tube. However, such devices cannot well meet the further compactness requirements in the fields of ocean, nuclear power, micro-reaction and the like, and the application extension of the devices is hindered.
The plate heat exchanger with the tiny channels is used as efficient heat exchange equipment, and the application scene of the plate heat exchanger is a supplement relative to a wound tube type heat exchanger. Patent CN108955316A discloses a multi-strand printed circuit board heat exchanger, which comprises a heat exchange core, and a cold fluid inlet, a cold fluid outlet, a hot fluid inlet, and a hot fluid outlet connected to the heat exchange core, but the plate channel arrangement of the heat exchange core of the present invention needs to be specially designed and manufactured, and cannot be directly used on the existing heat exchange core, which causes resource waste, and increases the use cost.
Disclosure of Invention
The invention aims to solve the problems and provides a multi-strand medium distribution structure suitable for micro-channel plate type heat exchange equipment.
The invention adopts the following technical scheme:
a multi-strand medium distribution structure suitable for a micro-channel plate type heat exchange device is arranged at two ends of a medium inlet and a medium outlet A and a medium outlet and a medium channel B of a plate type heat exchange core body, and is characterized by comprising end covers, channels and a medium channel box, wherein the outlet and the inlet of each medium channel layer of the plate type heat exchange core body are respectively and correspondingly connected with at least one channel, each channel is communicated with the corresponding medium channel contained in the corresponding medium channel layer and forms closed connection, the number of the channels connected with the outlet and the inlet of the same medium channel layer is the same, the end covers are respectively arranged at the end parts of the medium inlet and the outlet A and the end parts of the medium inlet and the outlet B of the plate type heat exchange core body and cover the channels, and the end covers, the channels and the plate type heat exchange core body are connected with each other to form an integrated structure;
the end cover is provided with a channel through hole, and one side of the channel through hole, which is far away from the plate type heat exchange core body, is connected with a medium pipe box; each channel is communicated with a medium channel box for accommodating the corresponding medium type through the channel through hole according to the medium type in the corresponding medium channel.
Preferably, each channel is only correspondingly connected with one medium, all the channels connected with the same medium form a group, and the channels in the same group are respectively connected with a medium pipe box at the ends of the medium inlet and outlet a and the medium inlet and outlet B of the plate heat exchange core.
Preferably, the channel is of a flat rectangular structure, all the medium channels in the medium channel layers correspondingly connected with the channel are communicated with each other due to the hollow arrangement of the channel, the thickness of the channel is matched with the thickness of the medium channel layer of the plate type heat exchange core, and the channel respectively forms a multi-layer structure which is vertically arranged at two ends of the medium inlet and outlet a and the medium inlet and outlet B of the plate type heat exchange core.
Preferably, the outlet and the inlet of the same medium channel layer are respectively and correspondingly connected with at least one channel to form channels on the same layer, the two ends of each channel in the width direction of the channel are matched with the positions of the medium channels on the medium channel layer, and when a plurality of channels are arranged, the channels on the same layer are arranged in parallel in the width direction of the channels; the channel width refers to the width in the direction of arrangement of the media channels in the media channel layer.
Preferably, each of the channels and the channel through-holes are connected by an extension channel having a thickness corresponding to the thickness of the connected channel and a width less than the width of the connected channel to concentrate the media.
Preferably, the medium pipe box is semi-cylindrical, and the upper end and the lower end of the medium pipe box do not exceed the upper end and the lower end of the end cover on the end cover.
Preferably, the medium pipe box is further provided with a connecting pipe, and the connecting pipe is perpendicular to the axis of the medium pipe box and is arranged at the center of the circular arc surface of the medium pipe box.
Preferably, the medium pipe box, the plate type heat exchange core, the channel and the end cover form an integrated structure.
Preferably, the plate type heat exchange core, the end cover, the channel and the medium pipe box are connected through diffusion welding and brazing; or form a unitary structure by 3D printing.
The invention has the beneficial effects that:
1) The invention carries out multi-strand flow distribution transformation on the heat exchange core body with the microchannel plate structure, can realize simultaneous heat exchange of multi-strand cold and hot fluid, further improves the compactness and the heat transfer efficiency of the heat exchange core body, can meet the higher flow integration requirement and optimizes the process performance.
2) The invention utilizes the end cover and the channel to distribute the multi-stream medium, can be directly applied to the prior heat exchange plate process, does not need to additionally arrange the heat exchange core plate channel, does not need to additionally transform and correct the design, the manufacturing process and the thermal design of the prior heat exchange plate, embodies better adaptability, is convenient to use, and can save resources and avoid waste by utilizing the prior heat exchange plate process.
Drawings
FIG. 1 is a schematic structural diagram of a prior plate heat exchange core;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the arrangement of the channel of the present invention;
FIG. 4 is a schematic view of the configuration of the end cap and channel combination of the present invention;
FIGS. 5A and 5B are schematic plan views illustrating the connection between the channel and the medium pipe box according to the present invention;
FIG. 6 is a schematic view of the arrangement of the medium pipe box and the connection pipe on the end cover;
the different arrows in fig. 1-5 represent different media access schemes.
The notations in the figures have the following meanings:
10-plate heat exchange core body 11-medium channel layer 111-medium channel 20-end cover
21-channel through hole 30-channel 31-extension channel 40-medium pipe box 50-connection pipe
Detailed Description
The technical scheme of the invention is more specifically explained by combining the following embodiments:
as shown in fig. 1, a plate heat exchange core 10 is a plate heat exchange device commonly used in the prior art, and has two end portions, namely a medium inlet and a medium outlet a and a medium inlet and a medium outlet B, a heat exchange structure is formed by stacking and connecting a plurality of medium channel layers 11 inside the plate heat exchange core 10, and each medium channel layer 11 has a plurality of medium channels 111. The inlet of the medium channel layer 11 and the outlet of the medium channel layer 11 are determined according to the corresponding medium flowing direction, and are not unique.
As shown in fig. 2-6, a multi-strand medium distribution structure suitable for a micro-channel plate heat exchanger is provided at two ends of a medium inlet and a medium outlet a and a medium inlet and a medium outlet B of a plate heat exchanger core 10, and the arrangement forms of the two ends are the same. The plate type heat exchange core comprises end covers 20, channels 30, a medium channel box 40 and connecting pipes 50, wherein the outlet of each medium channel layer 11 and the inlet of each medium channel layer 11 of the plate type heat exchange core 10 are respectively and correspondingly connected with at least one channel 30, and each channel 30 and a medium channel 111 contained in the corresponding part of the medium channel layer 11 form a closed connection.
The channel 30 is of a flat rectangular structure, the inside of the channel is hollow, so that all the medium channels 111 in the correspondingly connected medium channel layers 11 are communicated with each other, the thickness of the channel 30 is matched with that of the medium channel layers 11 of the plate heat exchange core 10, and the channel 30 forms a multilayer structure which is vertically arranged or stacked at two ends of a medium inlet and outlet a and a medium inlet and outlet B of the plate heat exchange core 10. The left end and the right end of each layer of channel 30 along the width direction of the channel 30 are all aligned and arranged on the same vertical plane, and the width of the channel 30 refers to the width of the channel 30 perpendicular to the water flow direction of the medium channel layer 11 of the plate heat exchange core 10.
The channels 30 correspondingly connected with the outlet of each medium passage layer 11 and the inlet of each medium passage layer 11 are channels 30 on the same layer, two ends of each layer of channels 30 along the width direction of the channel 30 are matched with the positions of the medium passages 111 on the medium passage layer 11, when the number of the channels 30 correspondingly connected with the outlet and the inlet of the same medium passage layer 11 is multiple, the channels 30 are arranged in parallel along the width direction of the channel 30, and the width of the single channel 30 is adjusted to ensure that the total width of the channel 30 on the layer is not changed.
The end covers 20 are respectively arranged at two ends of the medium inlet and outlet a and the medium inlet and outlet B of the plate type heat exchange core 10, and form an integral structure with the plate type heat exchange core 10; the end cover 20 is provided with a channel through hole 21, and one side of the channel through hole 21 away from the plate heat exchange core 10 is connected with the medium pipe box 4.
The channels 30 are arranged in groups according to the number of the media of the plate type heat exchange core 10, each channel 30 is correspondingly connected with only one media, all the channels 30 connected with the same media form one group, and the channels 30 in the same group are connected with the channel through holes 21 through the extension channels 31 and are connected into the same media tube box 40. The extension channel 31 has a thickness corresponding to the thickness of the connected channel 30 and a width less than the width of the connected channel 30 to concentrate the media.
The medium tube box 40 is semi-cylindrical, and the upper end and the lower end of the medium tube box 40 do not exceed the upper end and the lower end of the end cover 20 on the end cover 20; the medium pipe box 40 is provided with a connecting pipe 50, the connecting pipe 50 is perpendicular to the axis of the medium pipe 40 and is arranged at the center of the arc surface of the medium pipe box 40, and the connecting pipe 50 forms a total inlet and outlet pipeline of a single medium.
The medium channel box 40, the plate type heat exchange core 10, the channel 30 and the end cover 20 may also form an integral structure, and the plate type heat exchange core 10, the end cover 20, the channel 30 and the medium channel box 40 are connected by diffusion welding or brazing to form an integral structure, or form an integral structure by 3D printing.
When the diffusion welding connection is used, the end cover 20 is made of metal materials or non-metal materials with good connection performance with the plate type heat exchange core body 10, and the connection position of the end cover 20 and the heat exchange core body 10 can be subjected to diffusion welding connection meeting the precision requirement, so that complete integrated heat exchange equipment is formed.
In this embodiment, three media participate in heat exchange, which are 1 heat medium and 2 cold media, respectively, and the heat medium and the cold medium are alternately stacked layer by layer in the plate heat exchange core 10 and the convection direction of the heat exchange is opposite, wherein the cold medium layer includes 2 channels 30 arranged side by side to separate 2 cold media, the width of each cold medium layer channel 30 is 1/2 of the width of the heat medium layer channel 30, and the three medium pipe boxes 40 connected to the outer side of the end cover 20 correspond to 3 media, respectively.
When the plate type heat exchange core works, a heat medium flows into the medium pipe box 40 from the connecting pipe 50 arranged at the medium inlet and outlet end B of the plate type heat exchange core 10, and enters the corresponding plurality of different layers of channels 30 in the medium pipe box 40 through the channel through holes 21 and the extension channels 31, and the medium is buffered in the channels 30 because the accommodating space of the channels 30 is larger than that of the extension channels 31; the medium enters the corresponding medium channel layer 11 from the channel 30, and one end of the medium entering the medium channel layer 11 is called an inlet of the medium channel layer 11, i.e. in this embodiment, the inlet of the medium channel layer 11 for the heat medium is at the B end of the plate heat exchange core 10; similarly, 2 strands of cold media flow into the corresponding medium tube box 40 from the connection tube 50 disposed at the medium inlet/outlet end a of the plate heat exchange core 10, enter the corresponding plurality of channels 30 in the medium tube box 40 through the channel through holes 21 and the extension channels 31, and enter the medium passage layer 11, and the inlet of the medium passage layer 11 of the cold media is at the end a of the plate heat exchange core 10. Cold and hot media respectively pass through the plate heat exchange core 10 and flow in the medium channel layer 11 of the plate heat exchange core 10 to exchange heat.
After heat exchange, the heat medium flows out from the end a of the medium inlet and outlet a of the plate heat exchange core 10 to the channel 30, the heat medium joins and flows into the corresponding medium channel 40 through the extension channel 31 and the channel through hole 21, and flows out from the connection pipe 50, and 2 cold media flows out from the end B of the medium inlet and outlet B of the plate heat exchange core 10 to the channel 30, joins and flows into the corresponding medium channel 40 through the extension channel 31 and the channel through hole 21, and flows out from the connection pipe 50. In this embodiment, the inlet of the medium channel layer 11 of the heat medium is at the end a of the plate heat exchange core 10, and the inlet of the medium channel layer 11 of the cold medium is at the end B of the plate heat exchange core 10.
The above embodiments are only used to illustrate the technical solutions of the present invention, and do not limit the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A multi-strand medium distribution structure suitable for micro-channel plate type heat exchange equipment is arranged at the ends of a medium inlet and a medium outlet A and a medium inlet and a medium outlet B of a plate type heat exchange core body (10), and is characterized by comprising end covers (20), channels (30) and a medium channel box (40), wherein the outlet and the inlet of each medium channel layer (11) of the plate type heat exchange core body (10) are respectively and correspondingly connected with at least one channel (30), each channel (30) is communicated with a corresponding medium channel (111) contained in the corresponding medium channel layer (11) to form closed connection, the end covers (20) are respectively arranged at the ends of the medium inlet and the medium outlet A and the medium inlet and the medium outlet B of the plate type heat exchange core body (10) and cover the channels (30), and the end covers (20), the channels (30) and the plate type heat exchange core body (10) are connected with each other to form an integrated structure;
a channel through hole (21) is formed in the end cover (20), and one side, far away from the plate type heat exchange core body (10), of the channel through hole (21) is connected with a medium pipe box (40); each of the channels (30) communicates with a medium manifold (40) accommodating a corresponding medium kind through the channel through-hole (21) according to the medium kind in the corresponding medium passage (111);
the channel (30) is of a flat rectangular structure, all medium channels (111) in the medium channel layer (11) correspondingly connected with the channel (30) are communicated with each other due to the hollow arrangement of the channel (30), the thickness of the channel (30) is matched with that of the medium channel layer (11) of the plate heat exchange core (10), and the channel (30) forms a multi-layer structure which is vertically arranged at two ends of a medium inlet and outlet A and a medium inlet and outlet B of the plate heat exchange core (10) respectively;
the channels (30) arranged at the outlet and the inlet of the same medium channel layer (11) respectively form channels (30) at the same layer, the two ends of each layer of channel (30) along the width direction of the channel (30) are matched with the positions of the medium channels (111) on the medium channel layer (11), and when the channels (30) are multiple, the channels (30) at the same layer are arranged in parallel along the width direction of the channels (30); the width of the channel (30) refers to the width along the arrangement direction of the medium channels (111) on the medium channel layer (11);
each channel (30) and the channel through hole (21) are connected through an extension channel (31), the thickness of the extension channel (31) is consistent with the thickness of the connected channel (30), and the width of the extension channel is smaller than the width of the connected channel (30) so as to concentrate media.
2. The multi-medium distribution structure suitable for the microchannel plate heat exchanger as claimed in claim 1, wherein each of the channels (30) is connected with only one medium, all channels (30) connected with the same medium are in one group, and the channels (30) in the same group are respectively connected with one medium channel box (40) at the ends of the medium inlet/outlet a and the medium inlet/outlet B of the plate heat exchanger core (10).
3. The multi-strand medium distribution structure suitable for the microchannel plate heat exchanger as recited in claim 1 or 2, wherein the medium channel box (40) is semi-cylindrical, and the upper and lower ends of the medium channel box (40) are not beyond the upper and lower ends of the end cap (20) on the end cap (20).
4. The multi-strand medium distribution structure suitable for the microchannel plate heat exchanger as recited in claim 3, wherein the medium channel box (40) is further provided with a connection pipe (50), and the connection pipe (50) is perpendicular to the axis of the medium channel box (40) and is arranged at the center of the arc surface of the medium channel box (40).
5. The multi-strand medium distribution structure suitable for the microchannel plate heat exchange device as recited in claim 4, wherein the medium channel box (40) forms an integral structure with the plate heat exchange core (10), the channel (30) and the end cap (20).
6. The multi-strand medium distribution structure suitable for the microchannel plate heat exchange device as recited in claim 1, wherein the plate heat exchange core (10), the end cap (20), the channel (30) and the medium channel box (40) are connected by diffusion welding and brazing; or form a unitary structure by 3D printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010980621.6A CN112304126B (en) | 2020-09-17 | 2020-09-17 | Multi-strand medium distribution structure suitable for micro-channel plate type heat exchange equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010980621.6A CN112304126B (en) | 2020-09-17 | 2020-09-17 | Multi-strand medium distribution structure suitable for micro-channel plate type heat exchange equipment |
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| CN112304126A CN112304126A (en) | 2021-02-02 |
| CN112304126B true CN112304126B (en) | 2022-11-04 |
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| CN113028867A (en) * | 2021-03-24 | 2021-06-25 | 哈尔滨锅炉厂有限责任公司 | Microchannel heat exchanger for multi-fluid heat exchange |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101511838B1 (en) * | 2013-04-15 | 2015-04-15 | 한국교통대학교산학협력단 | Fluidfluid heat exchager and heat exchange method using it |
| CN104896978B (en) * | 2015-05-15 | 2016-10-05 | 兰州兰石集团有限公司 | A kind of three medium composite heat exchangers |
| CN107328269B (en) * | 2017-07-14 | 2023-05-09 | 甘肃蓝科石化高新装备股份有限公司 | Plate-shell heat exchanger composed of parallel plate bundles |
| CN108955316B (en) * | 2018-06-29 | 2020-11-13 | 合肥通用机械研究院有限公司 | Multi-strand printed circuit board type heat exchanger |
| CN111271994A (en) * | 2018-12-05 | 2020-06-12 | 中国科学院大连化学物理研究所 | Hexagonal detachable welded heat exchanger |
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