WO2023246447A1 - 一种设有管翅桥的气体分区流动的翅片管 - Google Patents

一种设有管翅桥的气体分区流动的翅片管 Download PDF

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Publication number
WO2023246447A1
WO2023246447A1 PCT/CN2023/097256 CN2023097256W WO2023246447A1 WO 2023246447 A1 WO2023246447 A1 WO 2023246447A1 CN 2023097256 W CN2023097256 W CN 2023097256W WO 2023246447 A1 WO2023246447 A1 WO 2023246447A1
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WO
WIPO (PCT)
Prior art keywords
fin
tube
airflow
bridge
connecting plate
Prior art date
Application number
PCT/CN2023/097256
Other languages
English (en)
French (fr)
Inventor
邹建东
张玉福
苏厚德
杨春天
车继勇
于啸
姜学军
张鹰
马金伟
杨磊杰
文泽鑫
吕庆欢
赵昕
余建永
Original Assignee
上海蓝滨石化设备有限责任公司
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Application filed by 上海蓝滨石化设备有限责任公司 filed Critical 上海蓝滨石化设备有限责任公司
Publication of WO2023246447A1 publication Critical patent/WO2023246447A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/10—Secondary fins, e.g. projections or recesses on main fins

Definitions

  • the invention relates to the technical field of heat exchange and the technical field of energy saving.
  • it involves finned tubes and tube bundles that constitute gas zone flow.
  • the round-based tube fin The sheet tube is equipped with an airflow zoning structure, so that the airflow does not flow through the front and back areas outside the base tube, reducing changes in the flow direction of the airflow outside the tube and reducing the range of changes in flow speed, reducing inefficient gas flow resistance losses.
  • the applicant found that a circular arc is provided in the middle of the inner side of the serpentine fin, which improves the compactness and fin ratio of the fin tube, but the circulation area of the arc on the inner side of the fin is The shrinkage and scaling flow resistance cannot be ignored, and the arc on the inner edge of the serpentine fin increases the manufacturing difficulty and manufacturing cost. For this reason, the applicant further optimized the product structure and proposed the solution of the present invention.
  • the present invention proposes a gas partition flow equipped with tube fin bridges. of finned tubes.
  • a finned tube with a tube-fin bridge for gas partitioned flow a base tube, a fin cluster, a side plate, an airflow guide box, an airflow baffle, and an airflow partitioning box.
  • Two sets of fin clusters are arranged symmetrically and parallel on both sides of the base tube.
  • the side plates are connected to the outside of the fin clusters.
  • the length and height of the side plates are the same as the length and height of the fin clusters.
  • An airflow guide box, airflow baffle or airflow partitioning box is provided on the windward or leeward side, and the distance between the two groups of fin clusters is greater than the outer diameter of the base pipe.
  • the fin clusters are not directly connected to the base tube, but are connected through a metal tube fin bridge.
  • the metal tube fin bridge is located in the space formed by the airflow guide box or the airflow baffle or the airflow partition box, the base tube, and the fin cluster.
  • the metal tube fin bridge is a component with an arc-shaped surface that matches the outer wall of the base pipe.
  • the opposite side of the arc-shaped surface is connected to the fin connecting plate at a tangent position, and the arc-shaped surface tightly surrounds and connects the outer wall of the base pipe, and the fins
  • the connecting plate is connected to the inside of the fin cluster, the length of the metal tube fin bridge is the same as the length of the fin cluster, and the edges of the airflow guide box, the airflow baffle, the airflow partition box and the metal tube fin bridge are connected.
  • the fin cluster is a serpentine shape in which a rectangular plate is bent into equally spaced partition plates, and contains a continuous bent plate surface and a flat plate surface.
  • the bent plate surface is an arc shape and a rectangular chamfer, and the inside and outside of the fin cluster are
  • the fin top lines are respectively connected to the fin connecting plates and side plates of the metal tube fin bridge, and the airflow guide box, airflow baffle, airflow partition box and metal tube fin bridge are connected by snaps.
  • the structural form of the metal tube-fin bridge is an integrated tube-fin bridge
  • the arc surface of the integrated tube-fin bridge is a complete ring
  • the fin connecting plate is a whole plate with a width greater than or equal to the width of the fin cluster
  • the fin connecting plate is The middle part of the plate is connected to the tangent point of the ring.
  • a hollow cavity is formed between the stiffened plate, the ring and the fin connecting plate.
  • bosses at the corners of the outer edge of the fin connection plate. The distance between the upper and lower bosses is greater than the width of the fin cluster.
  • the inner edge of the fin connection plate is equipped with serrated teeth with a triangular cross-section.
  • the teeth are extended along the entire length of the fin connecting plate along the axial direction of the base tube, and the serrated teeth are used to clamp the airflow guide box or the airflow baffle.
  • the structural form of the metal tube-fin bridge is a half-type tube-fin bridge.
  • the half-type tube-fin bridge is connected by two symmetrically arranged semicircular saddle brackets and two symmetrically arranged clamping bars.
  • the one-sided semicircular saddle bracket The inner diameter of the semicircular ring is the same as the outer diameter of the base tube.
  • the outside of the one-sided semicircular saddle bracket is a fin connecting plate.
  • the width of the fin connecting plate is greater than or equal to the width of the fin cluster.
  • the tangent point between the fin connecting plate and the semicircular ring is Connected into one body, there is a connected reinforcing plate between the inner side of the fin connecting plate and the semicircular ring.
  • a hollow cavity is formed between the fin connecting plate, the semicircular ring and the reinforcing rib plate.
  • the end of the semicircular saddle bracket is The opposite part is provided with a connecting wing plate with a certain height extending in the radial direction.
  • the outer surface of the connecting wing plate is provided with serrated locking teeth.
  • the locking teeth on the connecting wing plate are a triangular serrated structure.
  • Two semi-circular saddle brackets After the base pipe is tightened by the buckle, there is an assembly gap between the connecting wing plates.
  • the clamping strip is a profile with a V-shaped cross-section.
  • the inner surface is provided with serrated locking teeth with a triangular cross-sectional shape.
  • the clamping strip and the connecting wing plate The corresponding serrated locking teeth form a reliable and stable locking connection, and the fin connection
  • the bosses at the corners of the outer edge of the connecting plate. The spacing between the bosses on both sides is greater than or equal to the width of the fin cluster.
  • the inner edge of the fin connecting plate is provided with serrated teeth with a triangular cross-section. The jagged teeth are The teeth are extended along the entire length of the fin connecting plate along the axial direction of the base tube, and the serrated teeth are used to clamp the airflow guide box or the airflow baffle.
  • the structural form of the metal tube-fin bridge is a segmented tube-fin bridge.
  • the segmented tube-fin bridge is two symmetrically arranged saddle-type connecting plates with a certain wrapping angle (the circumferential angle is less than 180 degrees).
  • the saddle-type connection The plate cooperates with the airflow partition box.
  • the inner edge of the single-sided saddle connecting plate is an arc surface.
  • the arc surface is connected to the outer wall of the base pipe.
  • the outer surface of the single-sided saddle connecting plate is connected to the fin cluster as a fin connecting plate. There are rectangular notches on the top and bottom edges of the single-sided saddle connecting plate and the contact surface of the air flow partition box.
  • the rectangular notch is connected to the rectangular buckle on the air flow partition box in a concave and convex staggered form.
  • the air flow partition box is a hollow structure, and the air flow partition box is The surface of the box in contact with the base tube is a curved surface, and the surface in contact with the inside of the fin cluster is a flat surface, and there are positioning bosses on the edge. The distance between the upper and lower positioning bosses is greater than or equal to the width of the fin cluster.
  • the airflow partition box and The fin clusters are the same length.
  • the outer wall surface of the air flow partition box is an arc surface or an elliptical surface
  • the outer wall surface of the adjacent side fin tube air flow partition box is a flat surface with an arc groove or a rectangular groove in the middle. Or triangular groove, the air flow partition box is equipped with connecting ribs inside.
  • the airflow guide box is only installed on the fin tubes on the peripheral side of the tube bundle (when there are multiple tube bundles arranged, there are peripheral side and internal fin tubes), and the airflow baffle is installed on the fin tubes on the peripheral side of the tube bundle or the internal fins of the tube bundle.
  • the airflow guide box is a hollow structure with a certain thickness.
  • the inner edge of the airflow guide box is a straight edge, and the outer edge is an arc line or elliptical line.
  • the two sides of the outer edge of the airflow guide box The airflow baffle is plate-shaped and has serrated teeth on both sides.
  • the serrated teeth of the airflow guide box and the airflow baffle are arranged along the length of the metal tube fin bridge.
  • the metal tube fin bridge is snap-connected to the airflow guide box or airflow baffle, and the airflow guide box or airflow baffle closes the space between the metal tube fin bridges on both sides.
  • the distance between the fin cluster partition plates ranges from 1.5 to 6 mm, and the fin tube finning rate ranges from 6 to 23;
  • the basic shape of the fin cluster partition plates is a flat wall, with spoiler corrugations on the flat wall.
  • the corrugation expansion coefficient of the spoiler corrugation is 1.02 ⁇ 1.2, and the pitch is 3-8mm.
  • the spoiler corrugation has transverse ripples, oblique ripples or longitudinal ripples along the direction of the air flow; connecting holes are provided on the partition plate, and the opening rate is 0.05 ⁇ 0.2.
  • the connecting holes are circular, oblong or rectangular, and the equivalent diameter of the opening is 1 ⁇ 3mm.
  • the arc surface of the metal tube fin bridge is in contact and soldered connection with the outer wall surface of the base pipe, the fin connecting plate is in contact and soldered connection with the inner side of the fin cluster, and the outer side of the fin cluster is in contact and soldered connection with the inner side surface of the side plate;
  • the base material of the base pipe is Steel, the outer surface is closely compounded with a layer of metal material with good thermal conductivity that can be brazed;
  • the material of the plate is a metal material with good thermal conductivity that can be soldered;
  • the material of the airflow guide box, airflow baffle, and airflow partition box is an easy-to-form metal material or engineering plastic.
  • the flow areas of the fin clusters of the present invention are basically equal, allowing the gas outside the tube to flow forward in the channels between the fins without lateral flow or scaling flow.
  • the gas locally changes the flow direction under the guidance of the corrugated shape of the fin surface, which increases the turbulence intensity of the gas flow and strengthens the convective heat transfer between the gas and the fins.
  • this technology eliminates the loss of steering resistance caused by the collision between the gas and the front of the base tube and the loss of separation resistance at the back of the base tube.
  • the present invention sets air flow partitions with a width larger than the diameter of the circular base pipe, thereby eliminating the gas scaling flow resistance outside the pipe, the flow channel is continuous, eliminating the scaling resistance loss, and the power consumption of gas flow is only used to overcome the gas and The frictional resistance of the flow channel wall is lost; and because there is no flow dead zone in the flow channel, it is not easy to cause impurities to adhere and stagnate, thus preventing impurities from accumulating and scaling.
  • the scale resistance coefficient is small and the scale resistance is stable. It reduces the flow resistance and dirt thermal resistance on the air side, and improves the energy efficiency performance level of fin tube air cooling products.
  • the product of the invention is easy to be manufactured automatically and has good quality stability.
  • the materials used in the product of the invention are all commonly used materials, which are easy to obtain and easy to manufacture.
  • the invention provides a tube-fin bridge with a simple longitudinal cross-sectional shape, which can be manufactured by drawing and has low manufacturing cost. By simplifying the shape of the serpentine fin, the manufacturing difficulty of the serpentine fin is reduced, making the product easy to manufacture.
  • Figure 1 is a schematic structural diagram of an embodiment of an integrated tube-fin bridge with airflow baffles at both ends of the present invention
  • Figure 2 is an enlarged view of point A in Figure 1;
  • Figure 3 is a schematic structural diagram of an embodiment of a half-type tube-fin bridge with an airflow baffle at one end and a circular airflow guide box at the other end of the present invention
  • Figure 4 is an enlarged view of B in Figure 3;
  • Figure 5 is a schematic structural diagram of an embodiment of the invention's segmented tube-fin bridge and non-centered base tube;
  • Figure 6 is a schematic structural diagram of an embodiment of a half-type tube-fin bridge with airflow baffles at both ends of the present invention
  • Figure 7 is a schematic structural diagram of an embodiment of a half-type tube-fin bridge with an airflow baffle at one end and an elliptical airflow guide box at the other end of the present invention
  • Figure 8 is a schematic structural diagram of the serpentine-shaped fin of the present invention, in which the left picture shows a flat wall and the right picture shows corrugations;
  • Figure 9 is a schematic diagram of the corrugated fins of the present invention.
  • the left picture has horizontal corrugations, the middle picture has diagonal corrugations, and the right picture has vertical corrugations. ripple;
  • Figure 10 is a schematic structural diagram of two embodiments of the airflow partitioning box of the present invention, in which the exposed surface in the left picture is circular and the exposed surface in the right picture is oval;
  • Figure 11 is a structural schematic diagram of three embodiments of the airflow partitioning box of the present invention.
  • the left picture shows the exposed surface with arc grooves
  • the middle picture shows the exposed surface with rectangular grooves
  • the right picture shows the exposed surface with triangular grooves;
  • Figure 12 is a schematic structural diagram of four embodiments of the saddle-type connecting plate of the segmented tube-fin bridge of the present invention.
  • Figure 13 is a schematic top view of the fin tube of the present invention (implementation mode: segmented tube-fin bridge, arc groove air flow partition box);
  • FIG. 14 is an enlarged view of C in FIG. 7 .
  • the invention includes a circular cross-section base pipe 1, two sets of serpentine fin clusters 2, side plates 3, air flow guide box 4 or air flow partition box 23 or air flow baffle 5, and metal tube fin bridge 6.
  • the base tube 1 In the cross-section of this finned tube for gas zone flow, the base tube 1 is in the middle, and the two sides are symmetrically arranged in parallel.
  • the base tube 1 is connected to the serpentine fin cluster 2 through the metal tube fin bridge 6, and the fin clusters on both sides are connected.
  • the distance between 2 is equal to the outer diameter of base tube 1 plus twice the thickness of the throat of the metal tube fin bridge.
  • An airflow guide box 4 or an airflow partitioning box 23 or an airflow baffle 5 is arranged on the airflow inlet surface and the outlet surface of the space separated by the fin clusters 2 on both sides.
  • Side plates 3 are provided on the outer surface of the serpentine fin cluster 2. According to the characteristics of gas flow and heat transfer, the position of the base pipe in the air flow direction is determined through technical research.
  • the base pipe should be arranged eccentrically toward the front (inlet end) ( Figure 5 shows the design of the base pipe not being centered).
  • the front-to-back symmetrical arrangement is a special case
  • the cross section of the base pipe 1 is circular, and the base pipe 1 has a certain thickness.
  • the material of the base pipe 1 can be a single metal that is easy to be brazed.
  • the base pipe 1 material is a bimetal composite pipe
  • the base pipe 1 base material is temperature-resistant and pressure-resistant steel
  • the base pipe 1 cladding material is a metal material that can be brazed, and there is no gap in the mechanical composite between the cladding layer and the base layer.
  • the bonding strength meets the requirements of load-bearing, temperature resistance, and non-contact thermal resistance.
  • the structural form of the metal tube-fin bridge 6 is an integrated tube-fin bridge.
  • the arc surface of the integrated tube-fin bridge is a complete ring, and the fin connecting plate 24 has a width greater than or equal to the width of the fin cluster 2.
  • the whole plate, the middle part of the fin connecting plate 24 and the tangent point of the ring are connected as a whole.
  • a hollow cavity is formed between the fin connecting plates 24.
  • the outer corners of the fin connecting plates 24 are provided with bosses 11. The distance between the upper and lower bosses 11 is greater than the width of the fin cluster 2.
  • the inner corners of the fin connecting plates 24 are The edge is provided with serrated teeth 7 with a triangular cross-sectional shape.
  • the serrated teeth 7 extend along the axial direction of the base tube along the entire length of the fin connecting plate 24.
  • the serrated teeth 7 are used to clamp the airflow guide box 4. Or airflow baffle 5.
  • the complete ring of the integrated tube-fin bridge is an interference fit with the base tube 1, and the base tube 1 and the integrated tube-fin bridge are connected through a cold-shrinkable base tube and a heat-expanding tube-fin bridge.
  • the fin connecting plate 24 is soldered to the fin cluster 2 .
  • the metal tube fin bridge 6 is also provided with latching protrusions corresponding to the sawtooth latching teeth 7 near the inner side of the end. The latching protrusions are interlocked with the sawtooth latching teeth 7.
  • the airflow guide box 4 or the airflow baffle 5 is connected to the metal tube fin bridge. 6 is stuck.
  • the structural form of the metal tube-fin bridge 6 is a half-type tube-fin bridge.
  • the half-type tube-fin bridge consists of two symmetrically arranged semicircular saddle brackets 12 and two symmetrically arranged clamping bars 13. connection, the inner diameter of the semicircular ring of the one-sided semi-circular saddle bracket 12 is the same as the outer diameter of the base pipe 1, the outside of the single-sided semi-circular saddle bracket 12 is a fin connecting plate 24, and the width of the fin connecting plate 24 is greater than or equal to the fin cluster 2 width, the fin connecting plate 24 and the semi-circular ring are connected as a whole at the tangent.
  • the fin connecting plate 24 and the semi-circular ring are connected.
  • a hollow cavity is formed between the semicircular saddle bracket 12 and the reinforcing rib plate.
  • a connecting wing 14 of a certain height is provided at the end of the semicircular saddle bracket 12 with the radial direction as the extending direction.
  • the outer surface of the connecting wing 14 is provided with a serrated lock.
  • the locking teeth 15 and the locking teeth on the connecting wing plate 14 have a triangular sawtooth structure.
  • the clip 13 is a V-shaped cross-sectional profile, and its inner surface is provided with serrated locking teeth 15 with a triangular cross-section.
  • the clip strip 13 and the connecting wing plate 14 form a reliable and stable locking connection through the corresponding serrated locking teeth 15 .
  • the outer corners of the fin connecting plate 24 are provided with bosses 11. The distance between the bosses 11 on both sides is greater than or equal to the width of the fin cluster 2.
  • the inner edge of the fin connecting plate 24 is provided with saw teeth with a triangular cross-section.
  • Like stuck teeth 7. The serrated clamping teeth 7 are arranged extending along the entire length of the fin connecting plate 24 along the axial direction of the base tube. Two semi-circular saddle brackets 12 pairs of buckles to hold the base pipe 1 Finally, there is an assembly gap between the connecting wing plates 14, and the clamping bar 13 is buckled onto the connecting wing plate 14.
  • the clamping bar 13 and the serrated locking teeth 15 on the connecting wing plate 14 are tightly fastened. Together (shown in Figure 14), the two semi-circular saddle brackets 12 are fastened to the base pipe 1.
  • the serrated teeth 7 are used to clamp the airflow guide box 4 or the airflow baffle 5 in the same manner as the integrated tube-fin bridge.
  • air flow baffle 5 is used, as shown in Figure 6.
  • an airflow guide box 4 can be provided.
  • the exposed surface of the airflow guide box 4 is circular or oval. As shown in Figure 3, the exposed surface of the airflow guide box 4 is circular, and the exposed surface of the airflow guide box 4 in Figure 7 is oval.
  • the inner edge of the airflow partition box 23 is annular and connected to the base pipe 1.
  • the airflow partition box 23 is divided into two types according to its position on the fin tube: one is The airflow partitioning box 23 on the windward side is divided into two types according to the arrangement position of the fin tubes in the air cooler tube bundle: one is the peripheral airflow partitioning box, and the other is the airflow partitioning box 23 on the windward side.
  • Adjacent airflow zoning box According to the shape, it is divided into adjacent air flow partitioning boxes 23 and peripheral air flow partitioning boxes 23.
  • the inner edge of the airflow partition box 23 is an arc line
  • the diameter of the arc line is the same as the outer diameter of the base pipe 1
  • the wrapping angle of the arc line is determined based on performance optimization.
  • the two sides of the air flow partitioning box 23 are straight lines parallel to each other, the outside of the peripheral air flow partitioning box 23 is an arc line (left picture in Figure 10) or an elliptical line (right picture in Figure 10), and the outside of the adjacent air flow partitioning box 23 is generally Straight line, set an arc groove 18 (left picture in Figure 11), rectangular groove 19 (middle picture in Figure 11) or triangular groove 20 (right picture in Figure 11) in the middle position.
  • Connecting ribs 25 are provided between the outer and inner rings of the airflow partitioning box 23 .
  • the intersection of the inner ring and the side of the airflow partition box 23 is provided with a convex rectangular buckle 21.
  • the rectangular buckle 21 matches the notch of the saddle connecting plate 16 to form a shrink connection, so that the inner surface of the saddle connecting plate 16 Hold the outer surface of base tube 1 tightly.
  • a boss 11 is provided at the intersection between the outer edge and the side of the adjacent airflow partitioning box 23 .
  • the side lengths of the airflow zone boxes 23 on the windward and outlet sides may be equal or unequal (that is, as shown in Figure 5, the base pipe is not centered, and the upper and lower airflow zone boxes have different sizes).
  • Figures 10, 11, and 12 show various embodiments of the airflow partitioning box 23 and the saddle-type connecting plate 16. Combining and matching can form a finned tube with divided gas flow in the segmented tube-fin bridge. Due to space limitations, not one by one. List all combinations. Of course, the figures shown are only some specific implementation forms. Other cross-sectional shapes can cover the windward side of the base pipe 1 as long as they have an inner arc surface connected to the base pipe 1 and a side surface connected to the inside of the fin cluster 2. or the leeward side are all included in the technical solution of the present invention.
  • the saddle connecting plates 16 in the segmented tube-fin bridge are symmetrically arranged in parallel on both sides of the base pipe 1; on the cross section of the base pipe 1, the inner edge of the saddle connecting plate 16 on one side is an arc line, and the arc line is The diameter is the same as the outer diameter of the base pipe, and the wrapping angle of the arc line is determined based on performance optimization.
  • the top edge, the bottom edge, and the outer edge are straight lines. At the intersection of the top edge, the bottom edge, and the outer edge, a section of the top edge and the bottom edge is concave, and a rectangular gap 17 is formed on the cross section.
  • the length of the saddle connecting plate 16 and the snake The 2-shaped fin clusters have the same length.
  • the outer contour of the fin cluster 2 is nearly rectangular.
  • it is made of a whole plate and is bent into a serpentine shape when viewed from above, as shown in Figure 8.
  • the basic shape of the heat transfer surface of the serpentine fin cluster 2 is a flat wall (left picture in Figure 8).
  • the fin surface is set with spoiler ripples and concavities (right picture in Figure 8).
  • the corrugation expansion coefficient is 1.02 to 1.2. Section Distance 35mm.
  • the uneven shapes of spoiler corrugations include transverse corrugations 8, oblique corrugations 9 or longitudinal corrugations 10.
  • the turbulent corrugations are divided into two types: changing the flow direction and changing the flow speed, generally changing the flow direction.
  • the cross-sectional shape of the fin cluster 2 is serpentine.
  • the airflow channel spacing of the fin cluster 2 ranges from 1.5 to 6 mm, and the fin ratio of the fin tube ranges from 6 to 23.
  • Connecting holes can be provided on the heat transfer surface of the fins, and the airflow channel spacing of the serpentine fin clusters 2 is determined according to the environment in which the fin tubes are used.
  • the opening ratio is 0.05 to 0.2
  • the shape of the connecting holes is circular, oblong, or rectangular
  • the equivalent diameter of the opening is 1 to 3 mm.
  • Communicating holes are used to balance the pressure of adjacent channels and also increase flow turbulence.
  • the arrangement of the spoiler corrugated concave and convex and communication holes is basically the same as the arrangement and function of the patent application titled "A continuous H-shaped fin tube with airflow partitions".
  • the wave height of the serpentine fin cluster 2 is the width of one air flow channel, and the spacing between the serpentine fin clusters 2 is the thickness of one air flow channel.
  • the wave peaks and troughs of the serpentine fin cluster 2 can be arcs. shape (shown in Figure 8), rectangular chamfering (this form is not shown in the accompanying drawings).
  • the wave height and spacing of the serpentine fin clusters 2 are determined based on flow and heat transfer optimization.
  • the side plate 3 is arranged on the outer side of the serpentine fin cluster 2.
  • the width of the side plate 3 is equal to the height of the fin cluster 2.
  • the length of the side plate 3 is equal to the length of the fin cluster 2.
  • the thickness of the side plate 3 is equal to the raw material of the fin cluster 2. The thickness of the board is comparable.
  • the base tube 1 and the metal tube fin bridge 6, the metal tube fin bridge 6 and the fin cluster 2, and the fin cluster 2 and the side plate 3 are connected by brazing.
  • the metal tube fin bridge 6 is reliably and densely connected to the base tube 1 and fin cluster 2.
  • the heat exchange fluid flowing inside the base tube 1 is generally liquid or gas.
  • the heat transfer is usually the cooling and condensation of the fluid in the tube.
  • the temperature of the gas outside the tube is lower than the allowable use temperature of the fin material, it can be used to heat the fluid in the tube.
  • the heat exchange fluid generally has a certain pressure; the heat exchange medium outside the tube is micro-pressure or low-pressure gas, and the fluids on both sides form cross-flow heat exchange.
  • the finned tube of the present invention is provided with airflow partitions whose width is larger than the diameter of the original base tube, thereby eliminating the scaling flow resistance of the gas outside the tube, making the flow path more continuous, and the scale resistance is smaller, completely eliminating the local resistance consumption of the airflow outside the tube, and the airflow power only uses Overcome the resistance to convective heat transfer along the way.
  • Fluid numerical simulation analysis shows that compared with the existing triangular arrangement of wound fin tubes with the same base tube specifications, when achieving the same heat transfer task, when the wind speed on the windward side is 3.5m/s, the gas partition flow fin tubes The flow pressure loss is reduced by 30%; or the convection heat transfer outside the tube is improved when the fan power consumption is the same.
  • the coefficient is 15%; in general, the gas zone flow fin tube saves the energy consumption of convection heat transfer by air flow outside the tube. Due to the small change in air flow velocity, it is not easy to cause impurity movement to stagnate, thus preventing impurities from accumulating, adhering and scaling.
  • the external heat transfer performance of the fin tube is also more stable and lasting, and the scale resistance coefficient is small, which significantly improves the flow and stability of the fin tube. Heat transfer.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

提供一种设有管翅桥（6）的气体分区流动的翅片管，翅片管为H形翅片管，基管（1）外两组蛇形翅片簇（2）之间的迎风面或背风面设置气流导箱（4）或气流挡板（5）或气流分区箱（23），两组翅片簇（2）之间的间距大于基管（1）外直径，翅片簇（2）与基管（1）通过金属管翅桥（6）加以连接。金属管翅桥（6）是带有与基管（1）外壁相配合的弧形面的构件，弧形面相背的一面相切位置连接翅片连接板（24），弧形面紧密包绕连接基管（1）外壁，翅片连接板（24）与翅片簇（2）内侧相连接。管翅桥（6）的纵向截面形状简单，可拉拔制造，制造成本低，通过简化蛇形翅片簇（2）的形状，降低了蛇形翅片簇（2）的制造难度，使得产品易于制造。

Description

一种设有管翅桥的气体分区流动的翅片管 技术领域
本发明涉及换热技术领域、能源节约技术领域。尤其是涉及构成气体分区流动的翅片管及管束。
背景技术
申请人之前申请名为“一种带气流分区的连续型H型翅片管”、“一种并列多管且构成气流分区的连续型H型翅片管簇”的专利申请，圆基管翅片管设置气流分区结构，气流不流过基管管外正面和背面区域，减少管外气流流动方向变化和减小流动速度变化幅度，降低了低效的气体流动阻力损失。同时不容易造成杂质运动停滞，避免杂质结垢粘附，垢阻系数小。翅片表面设置波纹时改变了翅片间通道的气流方向，破坏边界层，强化对流传热。在实现相同传热任务时，风机动力消耗降低；或者相同风机动力消耗时，提高了传热量；节约了管外气流对流传热的能源消耗。申请人在进行技术研究、产品创新过程中发现，蛇形翅片内侧边中间部位设置圆弧，提高了翅片管的紧凑度、翅化比，但是翅片内边圆弧部位的流通面积收缩，缩放流动阻力不容忽视，况且蛇形翅片内边的圆弧，增大了制造难度，增加了制造成本。为此，申请人对产品结构进一步优化，提出本发明方案。
发明内容
本发明为了满足流程工业领域广泛使用的翅片管空冷器产品的节能降耗、避免杂质黏附堵塞翅片通道，解决现有产品的问题和不足，提出一种设有管翅桥的气体分区流动的翅片管。
本发明的技术方案：一种设有管翅桥的气体分区流动的翅片管，基管、翅片簇、侧板、气流导箱、气流挡板、气流分区箱，沿长度方向在基管外两侧对称平行布置两组翅片簇，侧板连接在翅片簇外侧，侧板的长度与高度均与翅片簇的长度与高度相同，基管外两组蛇形翅片簇之间的迎风面或背风面设置气流导箱或气流挡板或气流分区箱，两组翅片簇之间的间距大于基管外直径，所述 翅片簇与基管不直接相连，而是通过金属管翅桥加以连接，所述金属管翅桥位于气流导箱或气流挡板或气流分区箱、基管、翅片簇构成的空间中，所述金属管翅桥是带有与基管外壁相配合的弧形面的构件，弧形面相背的一面相切位置连接翅片连接板，弧形面紧密包绕连接基管外壁，翅片连接板与翅片簇内侧相连接，金属管翅桥的长度与翅片簇的长度相同，气流导箱、气流挡板、气流分区箱边缘与金属管翅桥之间相连接。
优选的，翅片簇为矩形板折弯成等间距间隔板的蛇形的形状，含有连续的折弯板面和平面板面，折弯板面为圆弧形、矩形倒角，翅片簇内外翅顶线分别与金属管翅桥的翅片连接板、侧板连接，气流导箱、气流挡板、气流分区箱与金属管翅桥之间为卡扣相连。
优选的，金属管翅桥的结构形式为一体式管翅桥，一体式管翅桥的弧形面为完整圆环，翅片连接板为宽度大于等于翅片簇宽度的整板，翅片连接板中间部位与圆环相切处连为一体，翅片连接板内壁面与圆环之间设有相连的加强筋板，加强筋板、圆环、翅片连接板之间构成空心腔，翅片连接板外缘的边角部位设有凸台，上下两边凸台间的间距大于翅片簇宽度，翅片连接板的内边缘位置设有截面形状为三角形的锯齿状卡牙，锯齿状卡牙沿基管轴向在翅片连接板全长度上延伸布置，锯齿状卡牙用于卡接气流导箱或气流挡板。
具体的，一体式管翅桥完整圆环与基管间为过盈配合，基管与一体式管翅桥之间通过冷缩基管、热胀管翅桥而连接。
优选的，金属管翅桥的结构形式为对半式管翅桥，对半式管翅桥由两件对称布置的半圆鞍式支架和两件对称布置的卡条连接，单侧半圆鞍式支架的半圆环内直径与基管外直径相同，单侧半圆鞍式支架的外侧为翅片连接板，翅片连接板宽度大于等于翅片簇宽度，翅片连接板与半圆环相切处连为一体，翅片连接板内侧与半圆环之间设有相连的加强筋板，翅片连接板、半圆环与加强筋板之间构成空心腔，半圆鞍式支架半圆环端部对口部位以径向为延伸方向设置有一定高度的连接翼板，连接翼板的外表面设有锯齿状锁紧牙，连接翼板上锁紧牙为三角锯齿状结构，两个半圆鞍式支架对扣抱紧基管后，连接翼板之间留有装配间隙，卡条为截面形状为V形的型材，内表面设有截面形状为三角形的锯齿状锁紧牙，卡条与连接翼板通过对应设置的锯齿状锁紧牙构成可靠稳定的锁紧连接，翅片连 接板外缘的边角部位设有凸台，两边凸台间的间距大于或等于翅片簇宽度，翅片连接板的内边缘位置设有截面形状为三角形的锯齿状卡牙，锯齿状卡牙沿基管轴向在翅片连接板全长度上延伸布置，锯齿状卡牙用于卡接气流导箱或气流挡板。
优选的，金属管翅桥的结构形式为分块式管翅桥，分块式管翅桥是两件对称布置的有一定包角(圆周角小于180度)的鞍式连接板，鞍式连接板与气流分区箱配合，单侧鞍式连接板的内边为圆弧面，圆弧面与基管外壁连接，单侧鞍式连接板外侧面作为翅片连接板与翅片簇相连接，单侧鞍式连接板顶边、底边与气流分区箱接触面设有矩形缺口，矩形缺口与气流分区箱上的矩形卡扣以凹凸交错形式锁紧连接，气流分区箱为空心结构，气流分区箱与基管接触的面为弧面，与翅片簇内侧接触的面为平面，并在边缘设有定位凸台，上下定位凸台间的间距大于或等于翅片簇宽度，气流分区箱与翅片簇的长度相同。
气流分区箱外壁面有两种情况：不相邻气流分区箱外壁面为圆弧面或椭圆面，相邻侧翅片管气流分区箱外壁面为平面基础上在中间设置圆弧槽或矩形槽或三角形槽，气流分区箱内部设有连筋。
具体的，气流导箱仅在管束外围侧翅片管设置(有多个管束排列时，有外围侧和内部翅片管之分)，气流挡板在管束外围侧翅片管或管束内部翅片管均可设置，气流导箱为有一定厚度的空心结构，在基管径向断面上，气流导箱的内边为直边，外边为圆弧线或椭圆线，气流导箱外边缘的两边设有锯齿状卡牙，所述气流挡板为板状，两边边缘设置锯齿状卡牙，气流导箱与气流挡板的锯齿状卡牙均沿金属管翅桥长度方向延伸布置，锯齿状卡牙将金属管翅桥与气流导箱或气流挡板卡扣相连，气流导箱或气流挡板封闭两侧金属管翅桥之间的间隔空间。
优选地是，翅片簇间隔板的间距范围为1.5～6mm，翅片管翅化率范围为6～23；翅片簇间隔板的基本形状为平壁，平壁基础上有扰流波纹，扰流波纹的波纹展开系数为1.02～1.2，节距3-8mm，扰流波纹有沿气流方向的横波纹、斜波纹或纵波纹；间隔板上开设连通孔，开孔率为0.05～0.2，连通孔为圆形或长圆形或矩形，开孔当量直径1～3mm。
金属管翅桥弧形面与基管外壁面接触钎焊连接，翅片连接板与翅片簇内侧接触钎焊连接，翅片簇外侧与侧板内侧面接触钎焊连接；基管基层材料为钢材，外表面紧密复合一层可钎焊的导热性能好的金属材料；金属管翅桥、翅片簇、侧 板的材料为可钎焊的导热性能好的金属材料；气流导箱、气流挡板、气流分区箱的材料为易于成形的金属材料或工程塑料。
本发明的有益效果：本发明的翅片簇，特别是蛇形翅片间流道流通面积基本相等，使得管外气体在翅片间通道内向前流动，无横向流动，无缩放流动。气体在翅片表面波纹形状的引导下局部改变流动方向，提高气体流动的湍流强度，强化气体与翅片的对流传热。与现有的圆翅片管相比，本技术消除了气体与基管前部的碰撞转向阻力损失以及基管背部的分离阻力损失。与之前申报专利相比，本发明设置宽度大于圆基管直径的气流分区，因而消除管外气体缩放流阻，流道连续，消除了缩放阻力损失，气体流动的动力消耗仅用于克服气体与流道壁面的摩擦阻力损失；而且由于流道无流动死区，不容易造成杂质黏附停滞，进而避免杂质堆积结垢，垢阻系数小，且垢阻稳定。降低了空气侧的流动阻力、污垢热阻，提高翅片管空冷产品能效性能水平。本发明的产品易于自动化制造，质量稳定性好。本发明产品所使用材料均为常用材料，易于获得，易于制造。本发明设置了纵向截面形状简单的管翅桥，可拉拔制造，其制造成本低，并且通过简化蛇形翅片的形状，降低了蛇形翅片的制造难度，使得产品易于制造。
附图说明
图1是本发明的一体式管翅桥、两端均为气流挡板实施方式结构示意图；
图2是图1的A处放大图；
图3是本发明的对半式管翅桥、一端为气流挡板另一端为圆形气流导箱实施方式结构示意图；
图4是图3的B处放大图；
图5是本发明的分块式管翅桥、基管不居中实施方式结构示意图；
图6是本发明的对半式管翅桥、两端均为气流挡板实施方式结构示意图；
图7是本发明的对半式管翅桥、一端为气流挡板另一端为椭圆形气流导箱实施方式结构示意图；
图8是本发明的蛇形形状翅片的结构示意图，其中左图为平壁、右图为带波纹；
图9是本发明的带有波纹翅片的示意图，左图横波纹、中图斜波纹、右图纵 波纹；
图10是本发明的气流分区箱两种实施方式结构示意图，其中左图为外露面为圆形、右图外露面为椭圆形；
图11是本发明的气流分区箱三种实施方式结构示意图，其中左图为外露面带有圆弧槽、中图为外露面带有矩形槽、右图为外露面带有三角形槽；
图12是本发明的分块式管翅桥的鞍式连接板四种实施方式结构示意图；
图13是本发明的翅片管的俯视示意图(实施方式：分块式管翅桥、圆弧槽气流分区箱)；
图14是图7的C处放大图。
图中：1基管、2翅片簇、3侧板、4气流导箱、5气流挡板、6金属管翅桥、7锯齿状卡牙、8横波纹、9斜波纹、10纵波纹、11凸台、12半圆鞍式支架、13卡条、14连接翼板、15锯齿状锁紧牙、16鞍式连接板、17矩形缺口、18圆弧槽、19矩形槽、20三角形槽、21矩形卡扣、22定位凸台、23气流分区箱、24翅片连接板、25连筋。
具体实施方式
下面结合附图和具体实施方式对本发明作更为详细的说明。以下实例有利于相关技术人员更好地理解本发明，但不以任何性限制本发明。并且应当指出，对于本研究领域的技术人员来说，在本发明的基础上做出的等同性改造，都属于本发明的保护范围。
本发明包含圆形截面基管1、两组蛇形的翅片簇2、侧板3、气流导箱4或气流分区箱23或气流挡板5、金属管翅桥6。
该气体分区流动的翅片管，其横断面上，基管1居中间，两侧对称平行布置通过金属管翅桥6使基管1与蛇形的翅片簇2相连，两侧翅片簇2之间距离等于基管1外直径加二倍金属管翅桥喉部厚度。两侧翅片簇2间隔空间的气流入口面、出口面布置气流导箱4或气流分区箱23或气流挡板5。蛇形的翅片簇2外侧面设置侧板3。根据气体流动与传热的特性，通过技术研究确定基管在气流方向的位置，基管宜向前(入口端)偏心布置(图5即为基管不居中的设计)，前后对称布置是特例。
基管1截面为圆形，基管1有一定厚度。在压力、温度条件温和的场合，基管1材料可为易于实现钎焊的单金属。其他场合基管1材料为双金属复合管，基管1基层材料为耐温耐压的钢材，基管1覆层材料为能实现钎焊的金属材料，覆层与基层之间机械复合无缝隙，结合力满足承载、耐温、无接触热阻要求。
如图1、图2，金属管翅桥6的结构形式为一体式管翅桥，一体式管翅桥的弧形面为完整圆环，翅片连接板24为宽度大于等于翅片簇2宽度的整板，翅片连接板24中间部位与圆环相切处连为一体，翅片连接板24内壁面与圆环之间设有相连的四道加强筋板，加强筋板、圆环、翅片连接板24之间构成空心腔，翅片连接板24外缘的边角部位设有凸台11，上下两边凸台11间的间距大于翅片簇2宽度，翅片连接板24的内边缘位置设有截面形状为三角形的锯齿状卡牙7，锯齿状卡牙7沿基管轴向在翅片连接板24全长度上延伸布置，锯齿状卡牙7用于卡接气流导箱4或气流挡板5。一体式管翅桥完整圆环与基管1间为过盈配合，基管1与一体式管翅桥之间通过冷缩基管、热胀管翅桥而连接。翅片连接板24与翅片簇2钎焊连接。金属管翅桥6靠近端头内侧面也设置与锯齿状卡牙7相对应的卡凸，卡凸与锯齿状卡牙7相扣，气流导箱4或气流挡板5就与金属管翅桥6卡紧。
如图3、4、14，金属管翅桥6的结构形式为对半式管翅桥，对半式管翅桥由两件对称布置的半圆鞍式支架12和两件对称布置的卡条13连接，单侧半圆鞍式支架12的半圆环内直径与基管1外直径相同，单侧半圆鞍式支架12的外侧为翅片连接板24，翅片连接板24宽度大于等于翅片簇2宽度，翅片连接板24与半圆环相切处连为一体，翅片连接板24内侧与半圆环之间设有相连的两道加强筋板，翅片连接板24、半圆环与加强筋板之间构成空心腔，半圆鞍式支架12半圆环端部对口部位以径向为延伸方向设置有一定高度的连接翼板14，连接翼板14的外表面设有锯齿状锁紧牙15，连接翼板14上锁紧牙为三角锯齿状结构。卡条13为截面形状为V形的型材，内表面设有截面形状为三角形的锯齿状锁紧牙15。卡条13与连接翼板14通过对应设置的锯齿状锁紧牙15构成可靠稳定的锁紧连接。翅片连接板24外缘的边角部位设有凸台11，两边凸台11间的间距大于或等于翅片簇2宽度，翅片连接板24的内边缘位置设有截面形状为三角形的锯齿状卡牙7。锯齿状卡牙7沿基管轴向在翅片连接板24全长度上延伸布置。两个半圆鞍式支架12对扣抱紧基管1 后，连接翼板14之间留有装配间隙，卡条13扣到连接翼板14上，施加足够的力时，卡条13、连接翼板14上的锯齿状锁紧牙15就紧扣在一起(图14所示)，于是两个半圆鞍式支架12就被紧固套接到基管1上。锯齿状卡牙7用于卡接气流导箱4或气流挡板5，方式与一体式管翅桥的相同。对于内部的管束，采用气流挡板5，如图6所示。对于外围的管束，即最外部迎风面，可设置气流导箱4。气流导箱4外露面是圆形或椭圆形。如图3的气流导箱4外露面就是圆形，图7的气流导箱4外露面就是椭圆形。
如图5，对分块式管翅桥结构，气流分区箱23的内缘环状，与基管1连接，气流分区箱23按其在翅片管上的位置分为两种：一种为迎风面的气流分区箱23，一种为出风面的气流分区箱23；按照翅片管在空冷器管束中的排布位置分为两种：一种为外围的气流分区箱，一种为相邻的气流分区箱。按照形状将其分为相邻的气流分区箱23，外围的气流分区箱23。在基管1横断面上，气流分区箱23的内边为圆弧线，圆弧线的直径与基管1外直径相同，圆弧线的包角大小根据性能优化确定。气流分区箱23两侧边为相互平行的直线，外围的气流分区箱23外边为圆弧线(图10左图)或椭圆线(图10右图)，相邻的气流分区箱23外边总体为直线，在中间位置设置一个圆弧槽18(图11左图)、矩形槽19(图11中图)或三角形槽20(图11右图)。气流分区箱23的外边与内边圆环之间设置连筋25。气流分区箱23内边圆环与侧边相交部位设有外凸的矩形卡扣21，该矩形卡扣21与鞍式连接板16的缺口相配形成缩紧连接，使得鞍式连接板16内表面抱紧基管1外表面。相邻的气流分区箱23外边与侧边相交部位设置凸台11。迎风面、出风面的气流风区箱23的侧边长度可相等也可不等(即如图5所示，基管不居中，上下两个气流分区箱尺寸不相同)。图10、图11、图12是气流分区箱23、鞍式连接板16多种实施方式，组合搭配即可构成分块式管翅桥的气体分区流动的翅片管，限于篇幅，未一一列举所有组合。当然图中所示，只是一些具体的实施形式，其它截面形状，只要带有与基管1相配合连接的内弧面、与翅片簇2内侧相连的侧面、能覆盖住基管1迎风面或背风面的，都含在本发明的技术方案之内。
分块式管翅桥中的鞍式连接板16对称平行布置在基管1两侧；在基管1横断面上，单侧鞍式连接板16的内边为圆弧线，圆弧线的直径与基管外直径相同，圆弧线的包角大小根据性能优化确定。顶边、底边、外边为直线，在顶边、底边与外边相交位置，顶边、底边内凹一段，截面上形成矩形缺口17。鞍式连接板16的长度与蛇 形的翅片簇2长度相同。
基管1横截面上，翅片簇2的外轮廓接近为矩形，为方便制作，用整块板弯折制成，俯视时呈蛇形，如图8所示。蛇形的翅片簇2传热面基本形状为平壁(图8左图)，根据场合需要翅片表面设定扰流波纹凹凸(图8右图)，波纹展开系数为1.02～1.2，节距35mm。如图9，扰流波纹凹凸形状有横波纹8、斜波纹9或纵波纹10。扰流波纹凹凸分为改变流向和改变流速两类，一般为改变流向类。翅片簇2的截面形状为蛇形。翅片簇2的气流通道间距范围为1.5～6mm，翅片管的翅化比为6～23。翅片传热面上可开设连通孔，蛇形的翅片簇2的气流通道间距根据翅片管所应用的环境而定。翅片传热面上开设连通孔时，开孔率为0.05～0.2，连通孔形状为圆形、长圆形、矩形，开孔当量直径1～3mm。连通孔用来平衡相邻通道的压力，也能增加扰流。扰流波纹凹凸和连通孔的设置与名为“一种带气流分区的连续型H型翅片管”的专利申请的设置方式和作用基本相同。
蛇形的翅片簇2的波高为一个空气流道的宽度，蛇形的翅片簇2的间距为一个空气流道的厚度，蛇形的翅片簇2的波峰和波谷处可为圆弧形(图8所示)、矩形倒角(这种形式附图未画)。蛇形的翅片簇2的波高和间距根据流动和传热优化确定。
蛇形的翅片簇2外侧面设置侧板3，侧板3宽度等于翅片簇2的高度，侧板3的长度等于翅片簇2的长度，侧板3的厚度与翅片簇2原料板的厚度相当。
基管1与金属管翅桥6，金属管翅桥6与翅片簇2，翅片簇2与侧板3之间连接采用钎焊。钎焊质量完好的翅片管，其金属管翅桥6与基管1、翅片簇2之间可靠致密连接。
基管1内部流动的换热流体一般为液体，或为气体，传热通常为管内流体的冷却、冷凝，当管外气体温度低于翅片材料允许使用温度时，可用于管内流体的加热。换热流体一般均有一定的压力；管外换热介质为微压或低压气体，两侧流体成错流换热。本发明的翅片管因设置宽度大于原基管直径的气流分区，因而消除管外气体缩放流阻，流道更连续，垢阻更小，完全消除管外气流局部阻力消耗，气流动力仅用克服对流传热的沿程阻力。流体数值模拟分析表明，与现有相同基管规格的绕片翅片管三角形排列相比，在实现相同传热任务时，在迎风面风速为3.5m/s时，气体分区流动翅片管的流动压损降低30％；或者相同风机动力消耗时，提高了管外对流传热 系数15％；总体上，气体分区流动翅片管节约了管外气流对流传热的能源消耗。由于气流流动速度变化幅度小，不容易造成杂质运动停滞，进而避免杂质堆积粘附结垢，翅片管外传热性能也更加稳定持久，垢阻系数小，明显地提高翅片管的流动和传热性。

Claims (10)

  1. 一种设有管翅桥的气体分区流动的翅片管，基管(1)、翅片簇(2)、侧板(3)、气流导箱(4)、气流挡板(5)、气流分区箱(23)，沿长度方向在基管(1)外两侧对称平行布置两组翅片簇(2)，侧板(3)连接在翅片簇(2)外侧，侧板(3)的长度与高度均与翅片簇的长度与高度相同，基管(1)外两组蛇形翅片簇之间的迎风面或背风面设置气流导箱(4)或气流挡板(5)或气流分区箱(23)，其特征是：两组翅片簇(2)之间的间距大于基管(1)外直径，所述翅片簇(2)与基管(1)不直接相连，而是通过金属管翅桥(6)加以连接，所述金属管翅桥(6)位于气流导箱(4)或气流挡板(5)或气流分区箱(23)、基管(1)、翅片簇(2)构成的空间中，所述金属管翅桥(6)是带有与基管(1)外壁相配合的弧形面的构件，弧形面相背的一面相切位置连接翅片连接板(24)，弧形面紧密包绕连接基管(1)外壁，翅片连接板(24)与翅片簇(2)内侧相连接，金属管翅桥(6)的长度与翅片簇(2)的长度相同，气流导箱(4)、气流挡板(5)、气流分区箱(23)边缘与金属管翅桥(6)之间相连接。
  2. 根据权利要求1所述的设有管翅桥的气体分区流动的翅片管，其特征是：翅片簇(2)为矩形板折弯成等间距间隔板的蛇形的形状，含有连续的折弯板面和平面板面，折弯板面为圆弧形、矩形倒角，翅片簇(2)内外翅顶线分别与金属管翅桥(6)的翅片连接板(24)、侧板(3)连接，气流导箱(4)、气流挡板(5)、气流分区箱(23)与金属管翅桥(6)之间为卡扣相连。
  3. 根据权利要求1所述的设有管翅桥的气体分区流动的翅片管，其特征是：金属管翅桥(6)的结构形式为一体式管翅桥，一体式管翅桥的弧形面为 完整圆环，翅片连接板(24)为宽度大于等于翅片簇(2)宽度的整板，翅片连接板(24)中间部位与圆环相切处连为一体，翅片连接板(24)内壁面与圆环之间设有相连的加强筋板，加强筋板、圆环、翅片连接板(24)之间构成空心腔，翅片连接板(24)外缘的边角部位设有凸台(11)，上下两边凸台(11)间的间距大于翅片簇(2)宽度，翅片连接板(24)的内边缘位置设有截面形状为三角形的锯齿状卡牙(7)，锯齿状卡牙(7)沿基管轴向在翅片连接板(24)全长度上延伸布置，锯齿状卡牙(7)用于卡接气流导箱(4)或气流挡板(5)。
  4. 根据权利要求3所述的设有管翅桥的气体分区流动的翅片管，其特征是：一体式管翅桥完整圆环与基管(1)间为过盈配合，基管(1)与一体式管翅桥之间通过冷缩基管、热胀管翅桥而连接。
  5. 根据权利要求1所述的设有管翅桥的气体分区流动的翅片管，其特征是：金属管翅桥(6)的结构形式为对半式管翅桥，对半式管翅桥由两件对称布置的半圆鞍式支架(12)和两件对称布置的卡条(13)连接，单侧半圆鞍式支架(12)的半圆环内直径与基管(1)外直径相同，单侧半圆鞍式支架(12)的外侧为翅片连接板(24)，翅片连接板(24)宽度大于等于翅片簇(2)宽度，翅片连接板(24)与半圆环相切处连为一体，翅片连接板(24)内侧与半圆环之间设有相连的加强筋板，翅片连接板(24)、半圆环与加强筋板之间构成空心腔，半圆鞍式支架(12)半圆环端部对口部位以径向为延伸方向设置有一定高度的连接翼板(14)，连接翼板(14)的外表面设有锯齿状锁紧牙(15)，连接翼板(14)上锁紧牙为三角锯齿状结构，两个半圆鞍式支架(12)对扣抱紧基管(1)后，连接翼板(14)之间留有装配间隙， 卡条(13)为截面形状为V形的型材，内表面设有截面形状为三角形的锯齿状锁紧牙(15)，卡条(13)与连接翼板(14)通过对应设置的锯齿状锁紧牙(15)构成可靠稳定的锁紧连接，翅片连接板(24)外缘的边角部位设有凸台(11)，两边凸台(11)间的间距大于或等于翅片簇(2)宽度，翅片连接板(24)的内边缘位置设有截面形状为三角形的锯齿状卡牙(7)，锯齿状卡牙(7)沿基管轴向在翅片连接板(24)全长度上延伸布置，锯齿状卡牙(7)用于卡接气流导箱(4)或气流挡板(5)。
  6. 根据权利要求1所述的设有管翅桥的气体分区流动的翅片管，其特征是：金属管翅桥(6)的结构形式为分块式管翅桥，分块式管翅桥是两件对称布置的有一定包角的鞍式连接板(16)，鞍式连接板(16)与气流分区箱(23)配合，单侧鞍式连接板(16)的内边为圆弧面，圆弧面与基管(1)外壁连接，单侧鞍式连接板(16)外侧面作为翅片连接板(24)与翅片簇(2)相连接，单侧鞍式连接板(16)顶边、底边与气流分区箱(23)接触面设有矩形缺口(17)，矩形缺口(17)与气流分区箱(23)上的矩形卡扣(21)以凹凸交错形式锁紧连接，气流分区箱(23)为空心结构，气流分区箱(23)与基管(1)接触的面为弧面，与翅片簇(2)内侧接触的面为平面，并在边缘设有定位凸台(22)，上下定位凸台(22)间的间距大于或等于翅片簇(2)宽度，气流分区箱(23)与翅片簇(2)的长度相同。
  7. 根据权利要求6所述的设有管翅桥的气体分区流动的翅片管，其特征是：气流分区箱(23)外壁面有两种情况：不相邻气流分区箱(23)外壁面为圆弧面或椭圆面，相邻侧翅片管气流分区箱(23)外壁面为平面基础上在中间设置圆弧槽(18)或矩形槽(19)或三角形槽(20)，气流分区箱(23) 内部设有连筋(25)。
  8. 根据权利要求1所述的设有管翅桥的气体分区流动的翅片管，其特征是：气流导箱(4)仅在管束外围侧翅片管设置，气流挡板(5)在管束外围侧翅片管或管束内部翅片管均可设置，气流导箱(4)为有一定厚度的空心结构，在基管径向断面上，气流导箱(4)的内边为直边，外边为圆弧线或椭圆线，气流导箱(4)外边缘的两边设有锯齿状卡牙(7)，所述气流挡板(5)为板状，两边边缘设置锯齿状卡牙(7)，气流导箱(4)与气流挡板(5)的锯齿状卡牙(7)均沿金属管翅桥(6)长度方向延伸布置，锯齿状卡牙(7)将金属管翅桥(6)与气流导箱(4)或气流挡板(5)卡扣相连，气流导箱(4)或气流挡板(5)封闭两侧金属管翅桥(6)之间的间隔空间。
  9. 根据权利要求1-8任一所述的设有管翅桥的气体分区流动的翅片管，其特征是：翅片簇(2)间隔板的间距范围为1.5～6mm，翅片管翅化率范围为6～23；翅片簇(2)间隔板的基本形状为平壁，平壁基础上有扰流波纹，扰流波纹的波纹展开系数为1.02～1.2，节距3-8mm，扰流波纹有沿气流方向的横波纹(8)、斜波纹(9)或纵波纹(10)；间隔板上开设连通孔，开孔率为0.05～0.2，连通孔为圆形或长圆形或矩形，开孔当量直径1～3mm。
  10. 根据权利要求1-8任一所述的设有管翅桥的气体分区流动的翅片管，其特征是：金属管翅桥(6)弧形面与基管(1)外壁面接触钎焊连接，翅片连接板(24)与翅片簇(2)内侧接触钎焊连接，翅片簇(2)外侧与侧板(3)内侧面接触钎焊连接；基管(1)基层材料为钢材，外表面紧密复合一层可钎焊的导热性能好的金属材料；金属管翅桥(6)、翅片簇(2)、侧板(3)的材料为可钎焊的导热性能好的金属材料；气流导箱(4)、气流挡板(5)、 气流分区箱(23)的材料为易于成形的金属材料或工程塑料。
PCT/CN2023/097256 2022-06-20 2023-05-30 一种设有管翅桥的气体分区流动的翅片管 WO2023246447A1 (zh)

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