CN210321338U - Plate-shell type heat exchanger based on circular micro-channel wavy-surface heat exchange plate - Google Patents
Plate-shell type heat exchanger based on circular micro-channel wavy-surface heat exchange plate Download PDFInfo
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Abstract
The utility model discloses a plate-shell heat exchanger based on circular microchannel wave surface heat exchange plates, which comprises a heat exchanger core body, a shell and a pipe box, wherein the heat exchanger core body comprises a heat exchanger core body frame, a plurality of circular microchannel wave surface heat exchange plates and a plurality of pipe plate strips, and the plurality of circular microchannel wave surface heat exchange plates are alternately laminated and fixed in the two heat exchanger core body frames through the pipe plate strips at the two ends of the circular microchannel; each round micro-channel wave surface heat exchange plate is formed by fixing a plurality of single-layer round micro-channels which are attached side by side, and the inner diameters of the round micro-channels in the same round micro-channel wave surface heat exchange plate are the same; the shell is provided with a first fluid inlet and a first fluid outlet, and the tube box is provided with a second fluid inlet and a second fluid outlet. The utility model discloses a heat exchanger heat exchange efficiency is high, bearing capacity is strong, is difficult to take place ice stifled, the ice phenomenon of splitting.
Description
Technical Field
The utility model belongs to the technical field of the lamella heat exchanger, especially, relate to a lamella heat exchanger based on circular microchannel wavy surface heat transfer plate.
Background
The plate-shell type heat exchanger is a product between the plate type heat exchanger and the shell-and-tube type heat exchanger, and has the advantages of both the plate type heat exchanger and the shell-and-tube type heat exchanger. The plate-shell heat exchanger is a heat exchanger which takes a plate tube as a heat transfer element and is also called a thin plate heat exchanger. It is mainly composed of a plate tube bundle and a shell. The contact portions of the cold-formed pair of strips are tightly welded together to form a plate tube containing a plurality of flat flow channels.
Chinese patent publication No. CN203642753U discloses a plate and shell heat exchanger, which comprises a housing and a heat exchange unit, wherein the heat exchange unit is disposed inside the housing, the heat exchange unit is provided with more than two heat exchange plates, the heat exchange plates are formed by overlapping and welding two metal plates, welding portions of the two metal plates are tightly welded together, a non-welding portion is an inner heat exchange passage formed by bulging, an outer heat exchange passage is formed between two adjacent heat exchange plates or between a heat exchange plate and the housing, the two adjacent inner heat exchange passages can be further arranged in a mutually staggered manner, and compared with a conventional heat exchanger, the heat exchange area is increased.
Chinese patent publication No. CN203224155U discloses a plate and shell heat exchanger, which includes: the tube bundle of the heat exchanger adopts the plate bundle, the plate bundle is formed by mutually overlapping and welding convex patterns to convex patterns and concave patterns to concave patterns by using concave patterns, the periphery of each plate is provided with a straight edge for convenient welding, according to the length of the plate bundle, a plurality of supporting plates and sealing lining plates are adopted to support and fix the plate bundle, the joint of the straight edge and the sealing lining plate is sealed by using the sealing strip, two ends of the plate bundle are welded with the sealing lining plates and then welded with the plate bundle, and a tube and a shell side medium respectively move in respective channels, so that the flowing state is changed constantly, the heat exchange is sufficient, and the heat transfer effect is improved.
These problems are mainly present in the current plate heat exchangers: 1. the plate surface of the heat exchange plate is large, so that the pressure bearing capacity is low; 2. the sealing strip is easy to age, so that the sealing strip cannot be used in a high-temperature environment; 3. for bearing pressure, the plate thickness is usually not less than 0.4mm, so the heat exchange efficiency is low; 4. the water in the plate is not easy to discharge, and the phenomena of ice blockage and ice crack are easy to occur when the plate is used in certain environments.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lamella heat exchanger based on circular microchannel wavy surface heat transfer board can improve the not enough of prior art, improves heat exchange efficiency by a wide margin.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a plate-shell type heat exchanger based on circular micro-channel wavy-surface heat exchange plates comprises a circular micro-channel heat exchanger core body, a shell fixed outside the circular micro-channel heat exchanger core body and pipe boxes arranged at two ends of the shell, wherein the circular micro-channel heat exchanger core body comprises a circular micro-channel heat exchanger core body frame, a plurality of circular micro-channel wavy-surface heat exchange plates and a plurality of pipe plate strips, and the plurality of circular micro-channel wavy-surface heat exchange plates are alternately stacked and fixed in the two circular micro-channel heat exchanger core body frames through the pipe plate strips at two ends of a circular micro-channel; each round micro-channel wave surface heat exchange plate is formed by fixing a plurality of single-layer round micro-channels which are attached side by side, and the inner diameters of the round micro-channels in the same round micro-channel wave surface heat exchange plate are the same;
the shell is provided with a first fluid inlet and a first fluid outlet, and the tube box is provided with a second fluid inlet and a second fluid outlet.
The inner diameters of the circular micro-channels on the wave panels of the different circular micro-channels in the core body of the circular micro-channel heat exchanger can be the same or different. The inner diameter of the micro-channel of the circular micro-channel heat exchanger core body can be one or a combination of several types, so that the advantage is that when the fluid in the tube has phase change, the problem that the volume is changed greatly after the phase change and needs corresponding inner volume is solved creatively in different processes.
The utility model discloses in, circular microchannel wave face heat transfer board comprises the circular microchannel that hugs closely each other, and circular microchannel has constituted a plurality of crests and trough on the heat transfer board surface for the surface of heat transfer board is the wave, and the line of the centre of a circle and adjacent trough, crest of circular microchannel locates to become the right angle in the centre of a circle. On the one hand, the heat exchange surface area of the wave-surface heat exchange plate of the circular micro-channel is maximized, and the best heat exchange effect is achieved.
Traditional tube for shell heat exchanger is thicker, and the manufacturing process lets the pipe pass the hole through boring suitable hole on the tube sheet and connects, nevertheless because microchannel's pipe is very thin, the tube sheet is generally thicker, and it is very difficult to bore a large amount of connecting holes on the tube sheet, the utility model discloses in, the pipe lath is the planishing face with the connection face of wave face heat transfer board, through being connected between wave face heat transfer board and the pipe lath, creative solution the microchannel pipe pass the difficult problem that the thick plate is connected. The tube strip may be in the shape of a flat strip, a corrugated strip, a broken strip, a wedge strip or the like. The shape of the flow channels of the heat exchange plates can be controlled by changing the shape of the tube sheet bars.
When the inner diameter of the circular microchannel is smaller, the connection surface of the pipe lath and the circular microchannel is a flat surface, so that a better sealing effect can be achieved between the pipe lath and the wave trough of the circular microchannel.
When the inner diameter of the circular microchannel is larger, in order to achieve better sealing effect between the pipe lath and the wave trough of the circular microchannel, a plurality of side-by-side semicircular grooves matched with the circular microchannel can be arranged on the pipe lath.
The wave plate strip is preferably a wave plate strip, the wave plate strip is formed on the basis of the optimal heat exchange shape obtained by Computer Fluid Dynamics (CFD) simulation according to the use condition of the heat exchanger, the bending section is angled at an angle α, the angle is between 0 and 50 degrees, and the proper bending angle is selected according to the flow velocity.
In order to ensure that the liquid distribution between the circular micro-channel wavy surface heat exchange plates on different layers is more uniform, pipe battens extend out of two ends of each circular micro-channel wavy surface heat exchange plate, the extending parts are flush, and the length of the extending parts is 0.1-10 mm.
In order to improve the heat exchange effect, in the utility model, the thickness of the pipe lath is 0.2-15mm, and the width is 1-40 mm; the inner diameter of the circular micro-channel is 0.1-4mm, the wall thickness is 0.02-0.4mm, the micro-channel effect is obvious, the wall of the inner diameter tubule is thin, and the heat exchange efficiency is high; and because the pipe diameter is thin, the pressure-bearing is high. Further preferably, the inner diameter of the circular microchannel is 0.1 to 1.5 mm. The utility model discloses in, the material of circular microchannel wave face heat transfer board, tube sheet strip, heat exchanger core frame can be stainless steel, alloy material or non-metallic material, is fit for high temperature resistant, abominable operating mode environment such as corrosion-resistant.
When the material is stainless steel or alloy, the whole heat exchanger can be manufactured by a welding process; when the material is nonmetal such as ceramic, the heat exchanger can also be made by 3D printing.
According to different requirements, the cross section of the heat exchanger core frame can be a circular ring, an elliptical ring, a rectangular ring or other polygonal rings, and can also be arranged into other irregular rings according to the shape of the tube plate strip.
In order to further improve the heat exchange efficiency, still be equipped with a plurality of comb-tooth's baffling baffle on a plurality of circular microchannel wave surface heat transfer plates, the tooth portion of baffling baffle stretches into between the circular microchannel wave surface heat transfer plate, the root of tooth of baffling baffle closely laminates with the inner wall of casing. The utility model discloses a with circular microchannel wavy surface heat transfer board matched with comb form baffling baffle, this baffling baffle simple structure, it is more convenient to install, can set up the concrete shape of baffling baffle tooth portion according to concrete needs. The baffle plate can play a role in supporting the heat exchange plate in the shell-and-tube heat exchanger, and can also enable media outside the circular micro-channel to flow according to a specific flow channel, so that the turbulence degree is increased, and the heat exchange efficiency is improved.
The utility model discloses a heat exchanger can have multiple form, and first form is:
the outer wall of the heat exchanger core frame is fixedly connected with the inner wall of the shell in a sealing mode, the pipe boxes at two ends are fixedly connected with two ends of the shell respectively, and the pipe boxes at two ends are provided with a second fluid inlet and a second fluid outlet respectively.
The second form is:
at least one flow baffle is respectively arranged in the pipe boxes at two ends, or one flow baffle is arranged only in one pipe box at one end, and the flow baffles divide the interior of the pipe box into a plurality of flows; in each flow path, the number of the circular microchannels and the inner diameter of the circular microchannels can be different, so that the problem that the corresponding inner volume is required due to the fact that the volume of the fluid is changed greatly is solved innovatively.
And the outer walls of the frames of the heat exchanger core at the two ends of the heat exchanger core are fixedly connected with the inner wall of the shell in a sealing way. The second fluid inlet and the second fluid outlet may be provided in one of the headers or in both headers, respectively.
The third form is:
the tube box at one end is a liquid inlet and outlet tube box, is fixedly connected with a heat exchanger core body frame at one end of the heat exchanger core body, and is detachably fixed with the shell; the tube box at the other end is fixedly connected with the shell, and a flow conversion seal head is fixedly arranged on the frame of the heat exchanger core body at the other end of the heat exchanger core body;
at least one flow baffle is respectively arranged in the liquid inlet and outlet channel box and the diversion end socket, or only one flow baffle is arranged in the liquid inlet and outlet channel box; the flow baffle divides the interior of the tube box into a plurality of flows, and the liquid inlet and outlet tube box is respectively provided with a second fluid inlet and a second fluid outlet.
The heat exchanger in the form is detachable, so that the core body of the heat exchanger is convenient to disassemble and wash.
The microchannel heat exchanger divides liquid evenly is a big and old problem, and in order to make circular microchannel's branch liquid more even, the circular microchannel inlet department of at least one flow sets up the equal liquid cover of a plurality of selectively (all setting including every inlet, or only setting at the inlet of individuality), and the equal liquid cover falls into a plurality of cells with the circular microchannel inlet in same flow, equal liquid covers and is equipped with the equal liquid hole of a plurality of, and better solution divides liquid even problem.
Preferably, the first fluid inlet is internally provided with a liquid equalizing plate with liquid equalizing holes, so that the first fluid flowing into the shell is more uniform, and the heat exchange effect is improved.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. above-mentioned lamella heat exchanger based on circular microchannel wave surface heat transfer board, constitute circular microchannel wave surface heat transfer board through hugging closely a plurality of circular microchannels that arrange each other, and with a plurality of circular microchannel wave surface heat transfer boards and a plurality of tube sheet strips range upon range of each other and constitute the heat exchanger core in two heat exchanger core frames, the bearing capacity has been increased when improving heat transfer surface area to the utmost, on the other hand, the fluid flows between the heat transfer board, the cooperation broach form baffling baffle, when guaranteeing the vortex effect, the problem that has heat transfer "blind spot" has been solved, heat exchange efficiency has been improved.
2. The utility model discloses a heat exchanger simple structure, the easy manufacturing can use the tube sheet strip of different shapes as required, can further improve in the runner collision disturbance and strengthen heat transfer.
Drawings
Fig. 1 is a schematic structural view of a plate-shell heat exchanger based on a circular micro-channel corrugated surface heat exchange plate in embodiment 1 of the present invention;
FIG. 2 is a schematic view of another angle of the plate and shell heat exchanger of FIG. 1;
fig. 3 is a schematic structural diagram of a first heat exchanger core in embodiment 1 of the present invention;
FIG. 4 is a schematic view of a baffle plate corresponding to the core of the heat exchanger in FIG. 3;
FIG. 5 is a schematic structural view of one of the circular microchannel corrugated surface heat exchange plates in the heat exchanger core of FIG. 3;
fig. 6 is a schematic structural diagram of a second heat exchanger core in embodiment 1 of the present invention;
FIG. 7 is a schematic view of a baffle plate corresponding to the core of the heat exchanger of FIG. 6;
fig. 8 is a schematic structural diagram of a third heat exchanger core in embodiment 1 of the present invention;
fig. 9 is a schematic structural diagram of a fourth heat exchanger core in embodiment 1 of the present invention;
fig. 10 is a schematic structural diagram of a fifth heat exchanger core in embodiment 1 of the present invention;
fig. 11 is a schematic structural view of a plate and shell heat exchanger based on a circular micro-channel corrugated surface heat exchange plate in embodiment 2 of the present invention;
fig. 12 is a schematic view of a liquid homogenizing cover in embodiment 2 of the present invention;
fig. 13 is a schematic structural view of a plate and shell heat exchanger based on a circular micro-channel corrugated surface heat exchange plate in embodiment 3 of the present invention;
fig. 14 is a schematic structural view of a plate and shell heat exchanger based on a circular micro-channel corrugated surface heat exchange plate in embodiment 4 of the present invention;
fig. 15 is another schematic structural diagram of a plate and shell heat exchanger based on a circular micro-channel corrugated surface heat exchange plate in embodiment 4 of the present invention.
Detailed Description
The invention will be described in further detail with reference to the following figures and examples, which are intended to facilitate the understanding of the invention without limiting it.
Example 1
As shown in fig. 1 and fig. 2, a plate-shell heat exchanger based on a round microchannel corrugated surface heat exchange plate includes a round microchannel heat exchanger core, a shell 5 fixed outside the round microchannel heat exchanger core, and a liquid inlet and outlet pipe box 6 and a flow transfer pipe box 9 disposed at two ends of the shell 5. The circular microchannel heat exchanger core body is arranged in the shell 5, the outer wall of the circular microchannel heat exchanger core body frame 3 at the two ends of the circular microchannel heat exchanger core body is fixed with the inner wall of the shell 5, and the tooth root part 42 of the baffling baffle 4 is tightly attached to the inner wall of the shell 5. As shown in fig. 1, the left baffle is inserted between the wave-surface heat exchange plates of the circular micro-channel from outside to inside, and the right baffle is inserted between the wave-surface heat exchange plates of the circular micro-channel from inside to outside.
The housing 5 is provided with a first fluid inlet 51 and a first fluid outlet 52; the two ends of the shell 5 are respectively provided with a liquid inlet and outlet pipe box 6 and a flow diversion pipe box 9, a flow baffle 8 fixed with the tube plate strip 2 of the round micro-channel heat exchanger core body is arranged in the liquid inlet and outlet pipe box 6, and a second fluid inlet 61 and a second fluid outlet 62 are respectively arranged on the two sides of the flow baffle 8 of the liquid inlet and outlet pipe box 6.
As shown in fig. 3, the first circular microchannel heat exchanger core is a schematic structural diagram, and includes a circular microchannel heat exchanger core frame 3, a plurality of circular microchannel corrugated heat exchange plates, and a plurality of tube sheets 2, where the plurality of circular microchannel corrugated heat exchange plates are alternately stacked and fixed in the two circular microchannel heat exchanger core frames 3 through the tube sheets 2 at the two ends of the circular microchannel; each round micro-channel wave surface heat exchange plate is formed by fixing a plurality of single-layer round micro-channels 1 which are attached side by side, and the inner diameters of the round micro-channels 1 in the same round micro-channel wave surface heat exchange plate are the same.
In fig. 3, the cross section of the circular microchannel heat exchanger core body frame 3 is a circular ring, the corresponding baffle 4 has a structure as shown in fig. 4, and includes a tooth portion 41 and a tooth root portion 42, the length of the tooth portion 41 of the baffle 4 can be set according to specific conditions, the distance between the tooth portions 41 is close to the outer diameter of the circular microchannel 1, and the tooth portion 41 of the baffle 4 extends into the space between the wave-surface heat exchange plates of the circular microchannel to play a role in baffling.
The round micro-channel wavy-surface heat exchange plates are mutually stacked and fixed through the tube plate strips 2 at the two ends of the round micro-channel 1, the two ends of the round micro-channel 1 extend out of the tube plate strips 2 for a certain length, and the extending parts are flush. As shown in fig. 3, the surface of the heat exchange plate with the wavy surface of the circular microchannel forms a plurality of wave crests and wave troughs, so that the surface of the heat exchange plate is wavy, and when the circular microchannel 1 is clamped by the tube plate bars 2, the tube plate bars 2 are sealed with the wave troughs on the surface of the heat exchange plate.
The tube plate strips 2 between the circular micro-channel wave-surface heat exchange plates shown in fig. 3 are single-layer, which is equivalent to laying the tube plate strips 2 and a plurality of circular micro-channels 1 at intervals. Alternatively, the tube sheet bar 2 may be formed by two layers which are stacked and fixed, which is equivalent to that a plurality of circular microchannels 1 are fixed by a pair of tube sheet bars 2 to form a heat exchange plate, referring to fig. 5, and then the stacked tube sheet bars are fixed by stacking a plurality of heat exchange plates.
Fig. 6 is a schematic structural diagram of a second heat exchanger core, the cross section of the heat exchanger core is a rectangular ring, and the structure of a corresponding baffle is shown in fig. 7.
The tube plate strips 2 in the two heat exchanger cores are flat plate strips, and optionally, the tube plate strips 2 can also be wave plate strips, broken line plate strips or wedge-shaped plate strips. As shown in fig. 8, which is a schematic structural diagram of a third heat exchanger core in embodiment 1 of the present invention, in the heat exchanger core, the tube sheet 2 is a corrugated sheet; as shown in fig. 9, which is a schematic structural diagram of a fourth heat exchanger core in embodiment 1 of the present invention, in the heat exchanger core, a tube sheet 2 is a polygonal line sheet; as shown in fig. 10, which is a schematic structural diagram of a fifth heat exchanger core in embodiment 1 of the present invention, in the heat exchanger core, the tube sheet 2 is a wedge-shaped strip.
As shown in fig. 3, the wave crests and the wave troughs of two adjacent round microchannel wave surface heat exchange plates are opposite, so that when fluid flows between the heat exchange plates, a larger turbulent flow can be generated, and the heat exchange efficiency is increased. Alternatively, the wave crests of two adjacent circular microchannel wave surface heat exchange plates can be opposite to the wave crests, or the wave crests are opposite to partial wave troughs.
In the plate-shell heat exchanger based on the circular micro-channel wavy-surface heat exchange plate, when in application, two groups of fluids needing heat exchange are a first fluid and a second fluid. Wherein, the second fluid enters from the second fluid inlet 61 of the inlet/outlet liquid channel box 6, is distributed into the round micro-channel 1 of the heat exchange plate through the deflection of the flow baffle 8, flows to the diversion channel box 9 along the round micro-channel 1 for diversion, and finally flows out from the second fluid outlet 62. The first fluid enters from the first fluid inlet 51, passes through the deflection of the deflection baffle 4, flows in the flow channel between the heat exchange plates, exchanges heat with the wavy surfaces of the heat exchange plates in full contact, and finally flows out from the first fluid outlet 52.
The circular micro-channel wave-surface heat exchange plates are formed by the circular micro-channels which are arranged in a mutually clinging mode, the circular micro-channel wave-surface heat exchange plates are stacked in the frames of the two heat exchanger cores, the bearing capacity is increased while the heat exchange surface area is improved, and on the other hand, fluid flows between the heat exchange plates and is matched with the comb-tooth-shaped baffle plates, so that the problem of heat exchange dead zones is solved fundamentally while the turbulence effect is ensured, and the heat exchange efficiency is improved.
The embodiment also provides two manufacturing methods of the shell-and-tube heat exchanger core based on the micro-channel heat exchange plate, and the first manufacturing method comprises the following steps:
(1) welding materials are coated on a welding area of the tube plate strip, two ends of a plurality of micro-channel metal circular tubes are clamped through a pair of tube plate strips with the welding materials respectively, the micro-channel metal circular tubes are tightly attached to each other, and the two ends of each micro-channel metal circular tube extend out of the tube plate strips.
In order to more conveniently enable the micro-channel metal round tubes to be mutually attached and have better attaching effect, the method further comprises the step of arranging bulges at two ends of the welding area of at least one tube plate strip before coating the welding area with the welding materials, wherein the height of each bulge is smaller than the outer diameter of each micro-channel metal round tube.
(2) After each pair of pipe strips is pre-fixed, coating solder resist on the micro-channel circular pipes on two sides of a welding area of the pipe strips and performing integral welding to obtain a circular micro-channel wave surface heat exchange plate;
(3) manufacturing a plurality of round micro-channel wavy-surface heat exchange plates matched with the frame of the heat exchanger core body by using the method;
(4) arranging two heat exchanger core body frames with inner walls coated with welding fluxes at intervals, cutting and trimming tube plate strips of the round micro-channel wavy-surface heat exchange plate, coating the welding fluxes on the surface of the tube plate strips, and sequentially laminating the tube plate strips in the two arranged heat exchanger core body frames to ensure that two ends of the tube plate strips are attached to the inner walls of the heat exchanger core body frames;
(5) alternately inserting comb-shaped baffle plates on the micro-channel circular tube heat exchange plate, and integrally welding the mutually laminated tube plate strips and the metal circular ring to obtain an initial heat exchanger core body;
(6) and cutting and trimming the initial heat exchanger core to enable the part of the micro-channel circular tube heat exchange tube extending out of the tube plate strip to be flush, so as to obtain the micro-channel circular tube heat exchanger core. After cutting, the length of the micro-channel metal round pipe extending out of the pipe lath is 1-10 mm.
The steps of the second manufacturing method are as follows:
(1') coating solder on a welding area of a pipe plate strip, clamping two ends of a plurality of micro-channel circular pipes through a pair of pipe plate strips with the solder respectively to form a first layer of micro-channel metal circular pipe layer, wherein the micro-channel metal circular pipes are tightly attached to each other, and the two ends of each micro-channel metal circular pipe layer extend out of the pipe plate strip;
(2') pre-fixing the pipe plate strip pairs, placing the pipe plate strips at the bottoms of the two heat exchanger core body frames with the inner walls coated with the welding fluxes, and repeatedly coating the welding fluxes and paving a plurality of metal circular pipes on the pipe plate strips to form a plurality of micro-channel metal circular pipe layers with different widths;
(3') coating solder on the surface of the tooth part of the comb-shaped baffle plate, inserting the comb-shaped baffle plate into the micro-channel circular tube heat exchange plate alternately, and integrally welding the mutually laminated tube plate strips, the metal circular rings and the baffle plate to obtain an initial heat exchanger core body;
(4') cutting and trimming the initial heat exchanger core body to enable the extension pipe plate strip part of the micro-channel circular pipe heat exchange pipe to be flush, and obtaining the micro-channel metal circular pipe heat exchanger core body.
Example 2
As a description of embodiment 2 of the present invention, only the differences from embodiment 1 will be described below.
In this embodiment, another plate-shell heat exchanger based on a round micro-channel wavy-surface heat exchange plate is shown in fig. 11, flow baffles 8 are respectively disposed in the tube boxes 10 at two ends, the flow baffles 8 divide the interior of the tube boxes into a plurality of flow paths, and the tube box at one end is provided with a second fluid inlet 61 and a second fluid outlet 62.
In use, the two sets of fluids that need to be heat exchanged are a first fluid and a second fluid. Wherein the second fluid enters from the second fluid inlet 61 of the tube box 10, is distributed into the round micro-channel 1 of the heat exchange plate, flows along the round micro-channel 1 to the tube box 10 at the other end, passes through the flow baffle 8, and finally flows out from the second fluid outlet 62. The first fluid enters from the first fluid inlet 51, passes through the deflection of the deflection baffle 4, flows in the flow channel between the heat exchange plates, exchanges heat with the wavy surfaces of the heat exchange plates in full contact, and finally flows out from the first fluid outlet 52.
In order to make the liquid separation of the second fluid entering different circular microchannels 1 more uniform, in the channel box 10, a plurality of liquid-equalizing covers 11 can be further arranged at the liquid inlet of the circular microchannel 1 in each flow, the liquid-equalizing covers 11 divide the liquid inlet of the circular microchannel 1 in the same flow into a plurality of small chambers, and a plurality of liquid-equalizing holes 12 are arranged on the liquid-equalizing covers 11, as shown in fig. 12.
In order to make the liquid separation more uniform when the first fluid enters the shell for heat exchange, the first fluid inlet 51 can be internally provided with a liquid equalizing plate with liquid equalizing holes, so that the heat exchange effect is improved.
Example 3
As a description of embodiment 3 of the present invention, only the differences from embodiment 2 will be described below.
In the third plate-shell heat exchanger based on the circular micro-channel wavy-surface heat exchange plate, as shown in fig. 13, flow baffles are not arranged in the tube boxes 10 at both ends, the tube box at one end is provided with an inlet for the second fluid 61, and the tube box at the other end is provided with an outlet for the second fluid 71. The first fluid inlet 51 is internally provided with a liquid equalizing plate with liquid equalizing holes.
In use, the two sets of fluids that need to be heat exchanged are a first fluid and a second fluid. Wherein the second fluid enters from the second fluid inlet 61 of the tube box 10, is distributed into the circular microchannels 1 of the heat exchange plate, flows along the circular microchannels 1 to the tube box 10 at the other end, and finally flows out from the second fluid outlet 71. The first fluid enters from the first fluid inlet 51, passes through the deflection of the deflection baffle 4, flows in the flow channel between the heat exchange plates, exchanges heat with the wavy surfaces of the heat exchange plates in full contact, and finally flows out from the first fluid outlet 52.
Example 4
As a description of embodiment 4 of the present invention, only the differences from embodiment 1 will be described below.
As shown in fig. 14, in this embodiment, the tube box at one end is a liquid inlet and outlet tube box 6, which is fixedly connected to the circular micro-channel heat exchanger core frame 3 at one end of the heat exchanger core and detachably fixed to the housing 5 through a flange; the diversion channel box 9 at the other end is fixedly connected with the shell, and a diversion seal head 15 is fixedly arranged on the frame of the heat exchanger core body at the other end of the heat exchanger core body; a flow baffle 8 is arranged in the liquid inlet and outlet channel 6, which divides the interior of the liquid inlet and outlet channel 6 into two parts, and a second fluid inlet 61 and a second fluid outlet 62 are respectively arranged.
In use, the two sets of fluids that need to be heat exchanged are a first fluid and a second fluid. Wherein the second fluid enters from the second fluid inlet 61 of the flow-reversing channel box 6, is distributed into the circular micro-channels 1 of the heat exchange plate, flows along the circular micro-channels 1 to the inside of the flow-reversing end socket 15 at the other end, and finally flows out from the second fluid outlet 62. The first fluid enters from the first fluid inlet 51, passes through the deflection of the deflection baffle 4, flows in the flow channel between the heat exchange plates, exchanges heat with the wavy surfaces of the heat exchange plates in full contact, and finally flows out from the first fluid outlet 52.
In this embodiment, a plate-shell heat exchanger is detachable and washable, as shown in fig. 14, since the left liquid inlet and outlet channel 6 is fixed to the frame 3 of the core of the circular microchannel heat exchanger and detachably fixed to the housing 5 by a flange, and the right flow-diverting channel 9 is fixed to the housing 5, when detaching and washing is required, only the liquid inlet and outlet channel 6, together with the core of the heat exchanger and the flow-diverting end enclosure 15, needs to be taken out from the left side of the housing.
As shown in fig. 15, at least one flow baffle 8 may be disposed in the liquid inlet/outlet channel 6 and the diversion closure head 15, and the flow baffle 8 divides the interior of the channel into a plurality of flows. In each flow path, the number of the circular microchannels and the inner diameter of the circular microchannels can be different, so that the problem that the corresponding inner volume is required due to the fact that the volume of the fluid is changed greatly is solved innovatively.
The above-mentioned embodiment is to the technical solution and the beneficial effects of the present invention have been described in detail, it should be understood that the above is only the specific embodiment of the present invention, not used for limiting the present invention, any modification, supplement and equivalent replacement made within the principle scope of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A plate-shell type heat exchanger based on circular micro-channel wavy-surface heat exchange plates comprises a circular micro-channel heat exchanger core body, a shell fixed outside the circular micro-channel heat exchanger core body and pipe boxes arranged at two ends of the shell, and is characterized in that the circular micro-channel heat exchanger core body comprises a circular micro-channel heat exchanger core body frame, a plurality of circular micro-channel wavy-surface heat exchange plates and a plurality of pipe plate strips, wherein the plurality of circular micro-channel wavy-surface heat exchange plates are alternately stacked and fixed in the two circular micro-channel heat exchanger core body frames through the pipe plate strips at two ends of a circular micro-channel; each round micro-channel wave surface heat exchange plate is formed by fixing a plurality of single-layer round micro-channels which are attached side by side, and the inner diameters of the round micro-channels in the same round micro-channel wave surface heat exchange plate are the same;
the shell is provided with a first fluid inlet and a first fluid outlet, and the tube box is provided with a second fluid inlet and a second fluid outlet.
2. The plate and shell heat exchanger based on round microchannel corrugated surface heat exchange plates as claimed in claim 1, wherein the tube sheet bars are flat sheet bars, corrugated sheet bars, broken line sheet bars or wedge-shaped sheet bars.
3. The plate and shell heat exchanger based on the circular microchannel wavy-surface heat exchange plate as claimed in claim 2, wherein when the tube plate strip is a wavy plate strip, the angle of the bent section of the wavy plate strip is 0-50 degrees.
4. The plate and shell heat exchanger based on round microchannel corrugated surface heat exchange plates as claimed in claim 1, wherein the tube sheet bar is provided with a plurality of side-by-side semicircular grooves matching with the round microchannels.
5. The plate and shell heat exchanger based on round microchannel wavy surface heat exchange plates of claim 1, wherein the thickness of the tube sheet bar is 0.2-15mm and the width is 1-40 mm.
6. The plate and shell heat exchanger based on the round micro-channel wavy-surface heat exchange plate as claimed in claim 1, wherein the two ends of the round micro-channel wavy-surface heat exchange plate extend out of the tube plate strips by 0.1-10mm, and the extending parts are flush.
7. The plate and shell heat exchanger based on the round microchannel wavy surface heat exchange plate as claimed in claim 1, wherein the round microchannel has an inner diameter of 0.1-4mm and a wall thickness of 0.02-0.4 mm.
8. The plate and shell heat exchanger based on the circular microchannel wave surface heat exchange plate as recited in claim 1, wherein the connection line between the circle center of the circular microchannel and the adjacent wave trough and wave crest on the circular microchannel wave surface heat exchange plate forms a right angle at the circle center.
9. The plate and shell heat exchanger based on round microchannel corrugated surface heat exchange plates as claimed in claim 1, wherein the circular microchannel heat exchanger core frame is circular, elliptical, rectangular or polygonal in cross section.
10. The plate and shell heat exchanger based on the circular micro-channel wavy surface heat exchange plates as claimed in claim 1, wherein a plurality of comb-shaped baffle plates are further arranged on the plurality of circular micro-channel wavy surface heat exchange plates, teeth of the baffle plates extend into between the circular micro-channel wavy surface heat exchange plates, and roots of the teeth of the baffle plates are tightly attached to the inner wall of the shell.
11. The plate-shell type heat exchanger based on the circular micro-channel wavy-surface heat exchange plates as claimed in claim 1, wherein at least one flow baffle is arranged in each of the tube boxes at two ends, or one flow baffle is arranged in each of the tube boxes at one end, and the flow baffles divide the interior of each tube box into a plurality of flows;
the outer walls of the frames of the circular micro-channel heat exchanger core at the two ends of the circular micro-channel heat exchanger core are fixedly connected with the inner wall of the shell in a sealing mode.
12. The plate-shell type heat exchanger based on the round micro-channel wavy-surface heat exchange plates as claimed in claim 1, wherein the tube box at one end is a liquid inlet and outlet tube box, is fixedly connected with a round micro-channel heat exchanger core body frame at one end of a round micro-channel heat exchanger core body, and is detachably fixed with the shell; the pipe box at the other end is fixedly connected with the shell, and the frame of the circular micro-channel heat exchanger core body at the other end of the circular micro-channel heat exchanger core body is fixedly provided with a flow conversion seal head;
at least one flow baffle is respectively arranged in the liquid inlet and outlet channel box and the diversion end socket, or only one flow baffle is arranged in the liquid inlet and outlet channel box; the flow baffle divides the interior of the tube box into a plurality of flows, and the liquid inlet and outlet tube box is respectively provided with a second fluid inlet and a second fluid outlet.
13. The plate-shell heat exchanger based on round microchannel corrugated surface heat exchange plates as claimed in any one of claims 11 to 12, wherein at least one round microchannel inlet of a process is provided with a plurality of liquid homogenizing covers, the liquid homogenizing cover divides the round microchannel inlet in the same process into a plurality of small chambers, and the liquid homogenizing cover is provided with a plurality of liquid homogenizing holes; and a liquid equalizing plate with liquid equalizing holes is arranged in the first fluid inlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241070.4U CN210321338U (en) | 2019-02-26 | 2019-02-26 | Plate-shell type heat exchanger based on circular micro-channel wavy-surface heat exchange plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920241070.4U CN210321338U (en) | 2019-02-26 | 2019-02-26 | Plate-shell type heat exchanger based on circular micro-channel wavy-surface heat exchange plate |
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| CN210321338U true CN210321338U (en) | 2020-04-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828677A (en) * | 2020-05-29 | 2020-10-27 | 武汉船用机械有限责任公司 | Flow velocity adjusting device of pipeline and conveying pipeline |
| CN112595145A (en) * | 2020-12-24 | 2021-04-02 | 季华实验室 | Unsupported honeycomb type heat exchange unit based on 3D printing and heat exchanger |
| CN112710170A (en) * | 2020-12-30 | 2021-04-27 | 佛山科学技术学院 | Shell and tube heat exchanger |
-
2019
- 2019-02-26 CN CN201920241070.4U patent/CN210321338U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828677A (en) * | 2020-05-29 | 2020-10-27 | 武汉船用机械有限责任公司 | Flow velocity adjusting device of pipeline and conveying pipeline |
| CN112595145A (en) * | 2020-12-24 | 2021-04-02 | 季华实验室 | Unsupported honeycomb type heat exchange unit based on 3D printing and heat exchanger |
| CN112710170A (en) * | 2020-12-30 | 2021-04-27 | 佛山科学技术学院 | Shell and tube heat exchanger |
| CN112710170B (en) * | 2020-12-30 | 2022-07-15 | 佛山科学技术学院 | Shell-and-tube heat exchanger |
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