CN113566614A - Heat exchange equipment and manufacturing method thereof - Google Patents

Heat exchange equipment and manufacturing method thereof Download PDF

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Publication number
CN113566614A
CN113566614A CN202010348377.1A CN202010348377A CN113566614A CN 113566614 A CN113566614 A CN 113566614A CN 202010348377 A CN202010348377 A CN 202010348377A CN 113566614 A CN113566614 A CN 113566614A
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CN
China
Prior art keywords
shell
end plate
housing
plate
heat exchange
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Granted
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CN202010348377.1A
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Chinese (zh)
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CN113566614B (en
Inventor
贾建东
谢海红
郭江明
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Hangzhou Kebaite Technology Co ltd
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Hangzhou Kebaite Technology Co ltd
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Priority to CN202010348377.1A priority Critical patent/CN113566614B/en
Publication of CN113566614A publication Critical patent/CN113566614A/en
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Publication of CN113566614B publication Critical patent/CN113566614B/en
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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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
    • 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
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding

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

Abstract

In the heat exchange equipment provided by the invention, two end parts of a plurality of hollow pipes are respectively fixed to the first end plate and the second end plate in a sealing manner, the first end plate extends into the shell from the second end of the shell, axially penetrates through the interior of the shell and extends out from the first end of the shell, a positioning piece is arranged between the periphery of the first end plate and the inner wall of the first end of the shell, the positioning piece and the first end plate of the shell form axial positioning at the same time, and further the first end plate is limited from moving from the first end to the second end of the shell, and the axial positioning of the first end plate relative to the first end of the shell can be realized only by arranging one positioning piece between the periphery of the first end plate and the inner wall of the first end of the shell, so that the first end plate is prevented from moving from the first end to the second end of the shell. The heat exchange equipment has the following advantages: the sealing structure has the advantages of few parts, simple structure, assembly steps and process, low production and manufacturing cost, stable axial positioning effect of the first end plate in the first end of the shell and reliable sealing between the end plates and the end part of the shell.

Description

Heat exchange equipment and manufacturing method thereof
Technical Field
The invention relates to the technical field of heat exchange, in particular to heat exchange equipment.
Background
Japanese patent JP4680933B2 discloses a heat exchanger comprising a shell and a resin tube, the ends of the resin tube being bundled together to form a honeycomb structure, the outer diameter of the honeycomb structure must be smaller than the inner diameter of the shell in order for the honeycomb structure to pass through the shell, the honeycomb structure is compensated for its outer diameter by a split ring, the shell side end plate simultaneously presses against the shell side bosses, the split ring and the shell side flange of the honeycomb structure, the tube side end plate is fixed to the shell side end plate by bolts, the tube side flange is fixed to the tube side end plate by bolts, and after tightening the bolts, the shell side end plate simultaneously presses the shell side bosses, the split ring towards the shell side flange to achieve positioning of the honeycomb structure relative to the ends of the shell while ensuring that a seal is formed between the honeycomb structure and the tube side end plate, the shell side end plate, the split ring to prevent mixing of the tube side fluid and the shell side fluid.
In the scheme, the outer diameter of the honeycomb structure is compensated through the split ring, namely the honeycomb structure adopts the largest outer diameter smaller than the inner diameter of the shell, so that the honeycomb structure can stretch into and pass through the shell, and further the subsequent fixed mounting operation of the honeycomb structure is completed.
In order to realize the positioning of the honeycomb structure relative to the end part of the shell, the heat exchanger is additionally provided with a shell side convex part on the periphery of the honeycomb structure, a shell side flange on the periphery of the shell, and a shell side end plate, a tube side flange and bolts are additionally and separately provided, so that the heat exchanger has various parts and high manufacturing cost; the assembly operation is complex, and the fastening operation of the bolt is complicated and time-consuming; in addition, after the heat exchanger is used for a long time, the bolts may loosen, so that the sealing performance between the honeycomb structure and the tube side end plate, the shell side end plate and the split ring is reduced, and in a serious case, the problem of mixing of tube side fluid and shell side fluid may occur.
Therefore, it is desirable to provide a new heat exchanger device, which can reduce the number of parts, reduce the manufacturing cost, improve the sealing performance between the end of the hollow tube and the end of the shell, and simplify the assembling operation of the heat exchanger device, while ensuring the reliable positioning between the end of the hollow tube and the end of the shell.
Disclosure of Invention
The present invention has been made in an effort to provide a heat exchanger apparatus which reduces the number of parts, simplifies the structure and assembly operation of the heat exchanger apparatus, reduces the manufacturing cost, and improves the sealability between the end of the hollow tube and the end of the housing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a heat exchange device comprises a shell and a plurality of hollow tubes positioned inside the shell;
the housing comprises a shell with a first end and a second end which are opened, and a first end cover and a second end cover which are respectively connected with the first end and the second end of the shell in a sealing way;
the two end parts of the hollow pipes are respectively fixed in the first end plate and the second end plate in a sealing way;
the housing has a first joint, a second joint, a third joint and a fourth joint, the first joint and the second joint are communicated with the interior of the hollow tube for passing tube-side fluid, and the third joint and the fourth joint are communicated with the interior of the shell for passing shell-side fluid;
the maximum value of the outer diameter of the first end plate is smaller than the minimum value of the inner diameter of the shell, so that the first end plate can stretch into the second end of the shell, penetrate through the inside of the shell along the axial direction and stretch out from the first end of the shell, a positioning piece is arranged between the periphery of the first end plate and the inner wall of the first end of the shell, and meanwhile, the positioning piece and the first end of the shell form axial positioning to further limit the first end plate to move from the first end to the second end of the shell.
In the heat exchange device provided by the invention, two end parts of a plurality of hollow tubes are respectively fixed to a first end plate and a second end plate in a sealing way, the first end plate having a maximum outer diameter less than a minimum inner diameter of the housing, whereby the first end plate is capable of extending into the housing from the second end, axially through the interior of the housing and out from the first end of the housing to provide a locating member between the outer periphery of the first end plate and the inner wall of the first end of the housing, the positioning piece and the first end of the shell form axial positioning at the same time, so that the first end plate is limited to move from the first end to the second end of the shell, the positioning piece is arranged between the periphery of the first end plate and the inner wall of the first end of the shell, so that the first end plate can be axially positioned relative to the first end of the shell, and the first end plate is prevented from moving from the first end to the second end of the shell in the assembling process of the heat exchange device. Compared with the prior heat exchange equipment, the heat exchange equipment provided by the invention has the following advantages: the axial positioning effect of the first end plate in the first end of the shell is stable, and the sealing performance between the end plate and the shell is reliable.
Furthermore, the inner wall of the first end of the shell is provided with a first limiting edge extending in the radial direction, the periphery of the first end plate is provided with a second limiting edge extending in the radial direction, the positioning piece is provided with a first matching surface and a second matching surface, and the first matching surface and the second matching surface are respectively abutted against the first limiting edge and the second limiting edge.
The first fitting surface and the second fitting surface of setting element lean on with the first spacing edge of the inner wall of the first end of casing and the second spacing edge of the periphery of first end plate respectively to with the inside of the first end of first end plate axial positioning casing, this axial positioning simple structure, the processing is made easily.
Furthermore, the second limiting edge is a step surface protruding out of the periphery of the first end plate, and the second matching surface is a step surface protruding out of the inner wall of the positioning piece; or, one of the periphery of the first end plate and the inner wall of the positioning piece is provided with a groove, the other is provided with a protrusion, the protrusion is clamped in the groove, and the second limiting edge and the second matching surface are side walls which are contacted with each other and abutted against the protrusion and the groove.
When the second limiting edge is a step surface protruding out of the periphery of the first end plate, the second matching surface is a step surface protruding out of the inner wall of the positioning piece, and the two step surfaces are contacted and abutted to form axial positioning, so that the structure is simple and the processing is easy; or, one of the periphery of the first end plate and the inner wall of the positioning piece is provided with a groove, the other one of the periphery of the first end plate and the inner wall of the positioning piece is provided with a protrusion, the protrusion is clamped in the groove, the second limiting edge and the second matching surface are side walls which are contacted and abutted with each other through the protrusion and the groove, and the axial positioning effect between the positioning piece and the first end plate is more stable.
Furthermore, the first limiting edge extends around the inner wall of the first end of the shell to form an annular surface, and the first matching surface is a tail end surface of the positioning piece.
When the first spacing edge extends to form an annular surface around the inner wall of the first end of the shell, the first fitting surface is the tail end surface of the positioning piece, the first fitting surface is in contact with the first spacing edge formed by the annular surface, the contact area between the first fitting surface and the first spacing edge is larger, the acting force of mutual contact is more uniform, and the axial positioning effect between the positioning piece and the first end of the shell is firmer.
Further, the distance between the outer peripheral surface of the positioning member and the inner surface of the corresponding region of the housing surrounding the outer peripheral surface of the positioning member is 0.02mm to 0.2 mm.
When the distance between the outer peripheral surface of the positioning piece and the inner surface of the corresponding area of the housing surrounding the outer peripheral surface of the positioning piece is between 0.02mm and 0.2mm, the positioning piece and the first end plate can be smoothly pushed into the first end of the housing on the premise of ensuring that the positioning piece can form radial positioning in the first end of the housing, so that the first end plate and the positioning piece are convenient to assemble.
Furthermore, at least part of the inner surface of the positioning piece is in contact with part of the outer peripheral surface of the first end plate, so that the first end plate is positioned in the positioning piece in the radial direction.
At least part of the inner surface of the positioning piece is contacted and attached to part of the outer peripheral surface of the first end plate, so that the first end plate is radially positioned in the positioning piece, and finally the first end plate is radially positioned in the first end of the shell.
Further, the positioning member is a broken ring structure.
The positioning piece is of a broken annular structure, so that the positioning piece can be conveniently sleeved on the periphery of the first end plate.
Furthermore, gaps are reserved between the tail end surface of the positioning piece and the inner surface of the first end of the shell, part of the outer peripheral surface of the first end plate and the end surface of the first end cover.
A gap is reserved between the end surface of the positioning piece and the inner surface of the first end of the shell, part of the outer peripheral surface of the first end plate and the end surface of the first end cover, and when the first end cover is welded to the first end of the shell, the molten material can be squeezed into the gap, so that the outflow of the molten material to the outside of the shell can be reduced, and the smoothness of the outer surface of the welding position is improved.
Further, the first end cover is simultaneously connected with the end part of the first end of the shell and the end part of the first end plate in a sealing mode, and the second end cover is simultaneously connected with the end part of the second end of the shell and the end part of the second end plate in a sealing mode.
The first end cover is simultaneously connected with the end part of the first end of the shell and the end part of the first end plate in a sealing mode, the second end cover is simultaneously connected with the end part of the second end of the shell and the end part of the second end plate in a sealing mode, and therefore reliable sealing can be formed between the tail end of the first end plate and the tail end of the second end plate and the inner wall of the first end of the shell and between the tail end of the second end plate and the inner wall of the second end of the shell respectively, and finally tube-side fluid and shell-side fluid are separated.
Further, the first end plate and the second end plate each comprise a first flange and a second flange which are protrudingly formed on the outer edge of the end face of the first end plate, the ends of the first flange and the second flange are flush with the end of the first end and the end of the second end of the shell respectively, and welding faces which form sealing with the outer edge of the first end cover and the outer edge of the second end cover respectively are formed.
The first flange and the second flange can separate the two end faces of the hollow tube from the two welding faces respectively, so that in the process of thermally welding the first end cover and the second end cover to the first end and the second end of the shell respectively, when the end part of the shell, the end part of the end plate and the end part of the end cover are heated and melted, the sealing structure of the hollow tube in the first end plate and the second end plate can be prevented from being damaged, and reliable sealing performance between the hollow tube and the two end plates is ensured.
Further, the length of the hollow pipes is 8mm-20mm greater than that of the shell.
The length of the hollow pipes is 8mm-20mm greater than that of the shell, on one hand, longer hollow pipes can be accommodated in the shell with the same volume, and the heat exchange area is increased to a certain extent; on the other hand, at least part of the length of the first end plate can extend out of the first end of the shell, so that the positioning piece can be conveniently sleeved on the periphery of the first end plate.
Further, a method of manufacturing a heat exchange device as described above, comprising the steps of:
(1) two ends of the hollow pipes are respectively fixed in the first end plate and the second end plate in a sealing mode;
(2) a first end plate extending into the second end of the housing, axially through the interior of the housing, and out of the first end of the housing;
(3) a positioning piece is arranged on the periphery of the first end plate, and axial positioning is formed between the positioning piece and the first end plate;
(4) simultaneously pushing the first end plate and the positioning piece into the first end of the shell, so that the positioning piece is arranged between the periphery of the first end plate and the inner wall of the first end of the shell, axial positioning is formed between the positioning piece and the first end of the shell, and the first end cover is hermetically fixed to the first end of the shell;
(5) a second end plate is positioned within the second end of the housing and a second end cap is sealingly secured to the second end of the housing.
In the manufacturing method of the heat exchange equipment, the assembly operation of parts is convenient, the process is simple, and after the assembly is completed, the reliability of the heat exchange equipment is good and the heat exchange equipment is convenient for customers to use.
Further, in the method, in the step (4), the first end cover is simultaneously and hermetically connected with the end part of the first end of the shell and the end part of the first end plate, and in the step (5), the second end cover is simultaneously and hermetically connected with the end part of the second end of the shell and the end part of the second end plate.
The first end cover is simultaneously connected with the end part of the first end of the shell and the end part of the first end plate in a sealing mode, the second end cover is simultaneously connected with the end part of the second end of the shell and the end part of the second end plate in a sealing mode, and therefore reliable sealing can be formed between the tail end of the first end plate and the tail end of the second end plate and the inner wall of the first end of the shell and between the tail end of the second end plate and the inner wall of the second end of the shell respectively, and finally tube-side fluid and shell-side fluid are separated.
In the method, the outer edge of the first end cover forms a seal with a welding surface formed by the end part of the first end of the shell and the end part of the first flange through hot melting, and the outer edge of the second end cover forms a seal with a welding surface formed by the end part of the second end of the shell and the end part of the second flange through hot melting.
First end cover, second end cover are respectively through the tip of hot melt welding in the tip of the first end of casing and the first flange of first end plate, the tip of the second end of casing and the tip of the second flange of second end plate, and indirect heating equipment's equipment technology is simple to make things convenient for customer's use.
In the heat exchange equipment provided by the invention, two end parts of a plurality of hollow pipes are respectively fixed to the first end plate and the second end plate in a sealing manner, the first end plate extends into the shell from the second end of the shell, axially penetrates through the interior of the shell and extends out from the first end of the shell, a positioning piece is arranged between the periphery of the first end plate and the inner wall of the first end of the shell, and the positioning piece is axially positioned with the first end and the first end plate of the shell at the same time so as to limit the first end plate from moving from the first end to the second end of the shell, namely, the axial positioning of the first end plate relative to the first end of the shell can be realized only by arranging one positioning piece between the periphery of the first end plate and the inner wall of the first end of the shell, and the first end plate is prevented from moving from the first end to the second end of the shell. Compared with the prior heat exchange equipment, the heat exchange equipment provided by the invention has the following advantages: the first end plate is provided with a first end plate, a second end plate and a second end plate, wherein the first end plate is arranged at the first end of the shell, the second end plate is arranged at the second end of the shell, the first end plate is arranged at the second end of the shell, and the second end plate is arranged at the first end of the shell.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a heat exchange apparatus provided by the present invention;
FIG. 2 is a cross-sectional view of another shell of the heat exchange device provided by the invention;
FIG. 3 is a cross-sectional view of the heat exchange unit of FIG. 1 with the ends of the plurality of hollow tubes sealingly secured to the first and second end plates, respectively;
FIG. 4 is a cross-sectional view of the heat exchange unit provided in FIG. 1;
FIG. 4A is an enlarged view of a portion of FIG. 4A;
FIG. 5 is a cross-sectional view of the shell of the heat exchange device provided in FIG. 1;
FIG. 6 is a left side view of the housing provided in FIG. 5;
FIGS. 7 and 8 are a cross-sectional view and an isometric view, respectively, of one of the positioning members of the heat exchange apparatus provided in FIG. 1;
FIG. 9 is a cross-sectional view of a first end plate configured to mate with the spacer provided in FIGS. 7-8;
FIG. 10 is a cross-sectional view of a first end plate of an alternate construction of the heat exchange device provided in FIG. 1;
FIG. 11 is a cross-sectional view of an alternative spacer that matches the configuration of the first end plate provided in FIG. 10;
FIG. 12 is a cross-sectional view of a first end plate of a third form of the heat exchange apparatus provided in FIG. 1;
FIG. 13 is a cross-sectional view of a third type of spacer that matches the configuration of the first end plate provided in FIG. 12;
FIGS. 14-20 a are schematic views illustrating an assembly process of the heat exchange device provided in FIG. 1;
the structure of the heat exchanger comprises a shell 1, a shell 10, a shell 101, a first end 102, a second end 103, a first limiting edge 104, a gap 11, a first end cover 11, a first outer edge 110, a second end cover 12, a second outer edge 120, a first joint 13, a second joint 14, a third joint 15, a fourth joint 16, a hollow pipe 2, a first end plate 21, a second limiting edge 210, a step surface 211, a second end plate 22, a groove 23, a protrusion 24, a first flange 25, a second flange 26, a baffle 3, a positioning element 4, a first matching surface 41, a second matching surface 42, a step surface 421, a protrusion 43 and a groove 44.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The heat exchange device as shown in fig. 1 comprises a housing 1 and a plurality of hollow tubes 2 located inside the housing 1, wherein the plurality of hollow tubes 2 extend inside the housing 1. To prevent the hollow tube 2 from twisting together, the hollow tube 2 is passed through a baffle 3 with apertures.
As shown in fig. 4, the housing 1 includes a casing 10, a first end cap 11 and a second end cap 12, the casing 10 has a first end 101 and a second end 102 which are open, and the first end cap 11 and the second end cap 12 are hermetically connected to the first end 101 and the second end 102 of the casing 10, respectively.
The baffles 3 are arranged offset within the housing 10, i.e. one baffle 3 is located in an upper portion of the housing 10 and the adjacent baffle 3 is located in a lower portion of the housing 10. The shell 10 is cylindrical, and the baffle plate 3 is in a circular segment shape, so that a gap is reserved between one end of the baffle plate and the inner wall of the shell 10 for shell-side fluid to flow through.
The housing 1 also has a first 13, a second 14, a third 15 and a fourth 16 connector, the first 13 and second 14 connectors communicating with the interior of the hollow tube 2 for the tube-side fluid to pass through, and the third 15 and fourth 16 connectors communicating with the interior of the shell 10 for the shell-side fluid to pass through.
In fig. 1, a first joint 13 and a second joint 14 are respectively located in a first end cap 11 and a second end cap 12, and a third joint 15 and a fourth joint 16 are respectively located at both ends of a housing 10.
In addition, as shown in fig. 2, the housing 1 of another structure provides the first end cap 11 and the second end cap 12 of different structures, i.e., the cylindrical portions of both are elongated in size, and the third joint 15 and the fourth joint 16 are also provided in the first end cap 11 and the second end cap 12, respectively, without providing the joint to the case 10.
As shown in fig. 3, both end portions of the plurality of hollow tubes 2 are sealingly fixed to a first end plate 21 and a second end plate 22, respectively.
As shown in fig. 4, the first end cap 11 is sealingly connected to both an end of the first end 101 of the housing 10 and an end of the first end plate 21, and the second end cap 12 is sealingly connected to both an end of the second end 102 of the housing 10 and an end of the second end plate 22.
Wherein the maximum value of the outer diameter of the first end plate 21 is smaller than the minimum value of the inner diameter of the housing 10, and wherein the positioning member 4 is provided between the outer circumference of the first end plate 21 and the inner wall of the first end 101 of the housing 10. The positioning member 4 is axially positioned between the first end 101 and the first end plate 21 of the housing 10, so as to limit the play of the first end plate 21 from the first end 101 to the second end 102 of the housing 10.
The maximum value of the outer diameter of the first end plate 21 is smaller than the minimum value of the inner diameter of the shell 10, so that the first end plate 21 can conveniently extend into the second end 102 of the shell 10, axially penetrate through the inside of the shell 10 and extend out from the first end 101 of the shell 10, and then the positioning member 4 is sleeved on the periphery of the first end plate 21 and finally clamped between the periphery of the first end plate 21 and the inner wall of the first end 101 of the shell 10 in the assembling process of the heat exchange device.
During assembly, the first end plate 21 extends beyond the first end 101 of the housing 10 (sometimes, the first end plate 21 extends only part of the way beyond the first end 101 of the housing 10), and then the spacer 4 is fitted over the extended portion of the first end plate 21. To facilitate the telescoping operation of the spacer 4, the spacer 4 is provided as a broken ring structure. The broken loop structure is formed by directly cutting a closed loop structure, but its extended length is equal to the circumference of the original closed loop structure; alternatively, the broken loop structure is obtained by cutting a closed loop structure to a length that is less than the circumference of the original closed loop structure after being stretched. In addition, the broken ring structure can also be provided by direct injection molding, without the need for subsequent shearing or cutting operations.
In addition, the length of the positioning element 4 sleeved on the outer periphery of the first end plate 21 is smaller than that of the first end plate 21, the front end surface of the positioning element 4 is flush with the front end surface of the first end plate 21, the end surface of the first end 101 of the housing 10 is flush with the end surface of the first end plate 21, and therefore a gap 104 is reserved between the end surface of the positioning element 4 and the inner surface of the first end 101 of the housing 10, part of the outer peripheral surface of the first end plate 21 and the end surface of the first end cover 11. When welding the first end cap 21 to the first end 101 of the shell 10, the melt may be squeezed into the gap 104, which may reduce the outflow of the melt to the outside of the shell 10, thereby improving the smoothness of the outer surface of the weld.
As shown in fig. 4, the front end surface of the positioning member 4 refers to its end surface facing the inside of the housing 10, and the distal end surface refers to its end surface facing the outside of the housing 10. The front end face of the first end plate 21 refers to its end face facing the inside of the housing 10, and the end face refers to its end face facing the outside of the housing 10.
As shown in fig. 3 to 4, each of the first end plate 21 and the second end plate 22 includes a first flange 25 and a second flange 26 protruding from the outer edge of the end surface thereof, and the ends of the first flange 25 and the second flange 26 are flush with the ends of the first end 101 and the second end 102 of the housing 10, respectively, and constitute welding surfaces for forming a seal with the outer edge 110 (fig. 19a) of the first end cap 11 and the outer edge 120 (fig. 20a) of the second end cap 12, respectively.
The first flange 25 and the second flange 26 can space both end faces of the plurality of hollow tubes 2 from both welding faces, and thus, in the process of heat-fusing the first end cap 11 and the second end cap 12 to the first end 101 and the second end 102 of the housing 10, respectively, the end portions of the first end 101 and the second end 102 of the housing 10, the end portions of the first and second end plates 21 and 22, and the end portions of the first and second end caps 11 and 12 are heated and fused, the sealing structure of the hollow tubes 2 in the first end plate 21 and the second end plate 22 can be prevented from being damaged, and reliable sealing performance between the hollow tubes 2 and the two end plates 21 and 22 can be ensured.
In order to provide a larger heat exchange area in a heat exchange device with the same volume, the length of the plurality of hollow tubes 2 is 8mm-20mm larger than the length of the shell 10, that is, after the first end cover 11, the first end plate 21 and the first end 101 of the shell 10 are sealed and fixed, the plurality of hollow tubes 2 are twisted for a certain length and then pushed into the interior of the shell 10 by the second end plate 22, the end of the second end plate 22 forms a seal with the second end 102 of the shell 10, the second end plate 22 generates a certain squeezing effect on the hollow tubes 2, and the second end cover 12 is sealed and fixed to the second end 102 of the shell 10.
As shown in fig. 4, the outer edge 110 (fig. 19a) of the first end cap 11 forms a sealing connection with the end of the first end 101 of the housing 10 and the end of the first end plate 21, and the outer edge 120 (fig. 20a) of the second end cap 12 forms a sealing connection with the end of the second end 102 of the housing 10 and the end of the second end plate 22.
The axial positioning structure between the positioning member 4 and the first end plate 21 and the first end 101 of the housing 10 will be described in detail. First, the axial direction of the housing 10, the axial direction of the positioning member 4, and the axial direction of the first end plate 21 are parallel to each other.
As shown in fig. 5 to 13, the inner wall of the first end 101 of the housing 10 has a first limiting edge 103 extending radially, the outer periphery of the first end plate 21 has a second limiting edge 210 extending radially, the positioning member 4 has a first mating surface 41 and a second mating surface 42, and the first mating surface 41 and the second mating surface 42 respectively abut against the first limiting edge 103 and the second limiting edge 210, so that the positioning member 4 is axially positioned with the first end 101 and the first end plate 21 of the housing 10.
The first limiting edge 103 may be formed by extending an inner wall of the first end 101 of the housing 10 along a radial direction of the housing 10 (a direction perpendicular to an axial direction of the housing 10), or may also be formed by extending the inner wall along a direction forming an angle with the radial direction of the housing 10. Similarly, the second limiting edge 210 may be formed by the outer periphery of the first end plate 21 extending outward along the radial direction of the first end plate 21, and the second limiting edge 210 may also be formed by the outer periphery of the first end plate 21 extending in a direction forming an angle with the radial direction of the first end plate 21.
Specifically, as shown in fig. 5-6, the first stop edge 103 extends around the inner wall of the first end 101 of the housing 10 to form an annular surface. Wherein the extension direction of the annular surface is parallel to the radial direction of the first end 101 of the housing 10. It should be noted that the annular surface is not parallel to the radial direction of the first end 101 of the housing 10, but may be at an angle with the radial direction of the first end 101 of the housing 10.
As shown in fig. 7 to 8, the first mating surface 41 is an end surface of the spacer 4, which is also an annular surface. In order to ensure stable and reliable axial positioning between the positioning member 4 and the first end 101 of the housing 10 after the first end plate 21 and the positioning member 4 are pushed into the first end 101 of the housing 10, the structure of the first mating surface 41, which is the distal end surface of the positioning member 4, is matched with the structure of the first stopper edge 103.
Specifically, when the first limiting edge 103 is an annular surface parallel to the radial direction of the first end 101 of the housing 10, the first mating surface 41 is also an annular surface parallel to the radial direction of the first end 101 of the housing 10; when the first limiting edge 103 is an annular surface extending in a direction forming an included angle with the radial direction of the first end 101 of the housing 10, the first mating surface 41 is also an annular surface extending in a direction forming an included angle with the radial direction of the first end 101 of the housing 10; in any case, after the positioning element 4 is pushed into the interior of the first end 101 of the housing 10, the first limiting edge 103 and the first mating surface 41 can contact and abut against each other, so that the axial positioning is formed between the positioning element 4 and the first end 101 of the housing 10.
As shown in fig. 7 to 9, the second position-limiting edge 210 is a step surface 211 protruding from the outer periphery of the first end plate 21, and the second engagement surface 42 is a step surface two 421 protruding from the inner wall of the positioning member 4. The step surface 211 is a transitional connecting surface between two portions of the outer peripheral surface of the first end plate 21, which have different outer diameters, is perpendicular to the axial direction of the first end plate 21, and extends to form an annular surface. The second step surface 421 is a transitional connecting surface between two portions of the inner wall of the positioning element 4 with different inner diameters, which is perpendicular to the axial direction of the positioning element 4 and also extends to form an annular surface. After the positioning member 4 is sleeved on the periphery of the first end plate 21, the step surface 211 contacts and abuts against the second step surface 421, so that axial positioning is formed between the positioning member 4 and the first end plate 21.
Alternatively, the second position-limiting rim 210 and the second engagement surface 42 may be in another form, that is, one of the outer periphery of the first end plate 21 and the inner wall of the positioning member 4 has a groove, and the other has a protrusion, the protrusion is snapped into the groove, and the second position-limiting rim 210 and the second engagement surface 42 are side walls of the protrusion and the groove which contact and abut against each other.
As shown in fig. 10 to 11, the periphery of the first end plate 21 has a groove 23, the inner wall of the positioning member 4 has a protrusion 43, the second limiting edge 210 is a side wall of the groove 23, the second mating surface 42 is a side wall of the protrusion 43, after the positioning member 4 is sleeved on the periphery of the first end plate 21, the protrusion 43 is clamped in the groove 23, and the side wall of the groove 23 and the side wall of the protrusion 43 are in contact with each other and abut against each other to form axial positioning.
Preferably, the left and right side walls of the groove 23 are respectively contacted with and abutted against the left and right side walls of the protrusion 43, that is, the second limiting edge 210 comprises the left and right side walls of the groove 23, and the second matching surface 42 comprises the left and right side walls of the protrusion 43; thus, the axial positioning effect between the positioning member 4 and the first end plate 21 is more excellent.
Further, when the left and right sidewalls of the recess 23 extend in the axial direction perpendicular to the first end plate 21 and the left and right sidewalls of the protrusion 43 also extend in the axial direction perpendicular to the positioning member 4, the axial positioning effect between the positioning member 4 and the first end plate 21 can be further improved.
Or, as shown in fig. 12 to 13, the outer periphery of the first end plate 21 has a second protrusion 24, the inner wall of the positioning element 4 has a second groove 44, the second limiting edge 210 is a side wall of the second protrusion 24, the second matching surface 42 is a side wall of the second groove 44, after the positioning element 4 is sleeved on the outer periphery of the first end plate 21, the second protrusion 24 is clamped into the second groove 44, and the side wall of the second protrusion 24 and the side wall of the second groove 44 are in contact with each other and abut against each other to form axial positioning.
Similarly, the left and right side walls of the second protrusion 24 respectively contact and abut against the left and right side walls of the second groove 44, that is, the second limiting edge 210 includes the left and right side walls of the second protrusion 24, and the second matching surface 42 includes the left and right side walls of the second groove 44; thus, the axial positioning effect between the positioning member 4 and the first end plate 21 is more excellent.
Furthermore, when the left and right sidewalls of the second protrusion 24 extend in the axial direction perpendicular to the first end plate 21 and the left and right sidewalls of the second recess 44 also extend in the axial direction perpendicular to the positioning element 4, the axial positioning effect between the positioning element 4 and the first end plate 21 can be further improved.
By additionally providing the positioning member 4 between the outer periphery of the first end plate 21 and the inner wall of the first end 101 of the housing 10, as mentioned above, the positioning member 4 forms axial positioning with the inside of the first end 101 of the housing 10 and the outer periphery of the first end plate 21, respectively, and finally forms axial positioning with the first end 101 of the housing 10 and the first end plate 21, so as to limit the first end plate 21 from moving from the first end 101 to the second end 102 of the housing 10.
In addition, the distance (d in fig. 4A) between the outer peripheral surface of the spacer 4 and the inner surface of the corresponding region of the first end 101 of the housing 10 surrounding the outer periphery thereof is between 0.02mm and 0.2 mm. Preferably, the entire outer circumference of the retainer 4 is a smooth cylindrical surface, and the inner surface of the corresponding region of the first end 101 of the housing 10 surrounding the outer circumference is also a smooth cylindrical surface, and the distance d between the two is between 0.02mm and 0.2mm within the corresponding axial length range.
The setting element 4 cup joints behind the periphery of first end plate 21, and the two can be more smoothly pushed the inside of the first end 101 of casing 10, and simultaneously, the setting element 4 can form radial location in the inside of the first end 101 of casing 10, both made things convenient for the equipment of first end plate 21 and setting element 4, also was convenient for the sealed fixed operation of first end plate 21.
Further, at least a part of the inner surface of the positioning member 4 contacts and abuts a part of the outer circumferential surface of the first end plate 21, so that the first end plate 21 is positioned radially inside the positioning member 4. As shown in fig. 4A, the inner surface of the positioning member 4 includes a portion extending in the axial direction thereof, and the outer peripheral surface of the first end plate 21 also includes a portion extending in the axial direction thereof, which are in contact with and attached to each other, so that the first end plate 21 is positioned radially inside the positioning member 4. Of course, the inner surface of the positioning member 4 and the outer peripheral surface of the first end plate 21 may be radially positioned inside the positioning member 4 by contact and adhesion between the respective non-axially extending portions. For example, the portion of the inner surface of the positioning member 4 that forms a certain angle with the axial direction thereof contacts and adheres to the portion of the outer peripheral surface of the first end plate 21 that forms a certain angle with the axial direction thereof.
The invention also provides a device and a method of the heat exchange equipment, which comprises the following steps:
(1) both ends of the plurality of hollow tubes 2 are sealingly fixed into the first end plate 21 and the second end plate 22, respectively, as shown in fig. 14;
(2) the first end plate 21 extends into the second end 102 of the housing 10, axially through the interior of the housing 10 and out the first end 101 of the housing 10, as shown in fig. 15-16;
(3) arranging a positioning piece 4 on the periphery of the first end plate 21, and forming axial positioning between the positioning piece 4 and the first end plate 21, as shown in fig. 17;
(4) simultaneously pushing the first end plate 21 and the positioning member 4 into the interior of the first end 101 of the housing 10, such that the positioning member 4 is disposed between the outer periphery of the first end plate 21 and the inner wall of the first end 101 of the housing 10, an axial positioning is formed between the positioning member 4 and the first end 101 of the housing 10, and the first end cap 11 is sealingly fixed to the first end 101 of the housing 10, as shown in fig. 18-19;
(5) the second end plate 22 is positioned inwardly of the second end 102 of the housing 10 and the second end cap 12 is sealingly secured to the second end 102 of the housing 10 as shown in fig. 20.
In the step (4), the first end cap 11 is simultaneously and hermetically connected to the end of the first end 101 of the housing 10 and the end of the first end plate 21. In step (5), the second end cap 12 is sealingly connected to both the end of the second end 102 of the housing 10 and the end of the second end plate 22. Specifically, the outer edge 110 (shown in fig. 19a) of the first end cap 11 is sealed by heat fusion with the welding surface formed by the end of the first end 101 of the housing 10 and the end of the first flange 25 of the first end plate 21, and the outer edge 120 (shown in fig. 20a) of the second end cap 12 is sealed by heat fusion with the welding surface formed by the end of the second end 102 of the housing 10 and the end of the second flange 26 of the second end plate 22. Alternatively, the second end plate 22 may be connected to the inner wall of the second end 102 of the housing 10 in a sealing manner before the second end cap 12 is welded and sealed.
While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that various changes and modifications of the invention can be effected therein by those skilled in the art after reading the above teachings of the invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (14)

1. A heat exchange device comprises a shell and a plurality of hollow tubes positioned inside the shell;
the housing comprises a shell with a first end and a second end which are opened, and a first end cover and a second end cover which are respectively connected with the first end and the second end of the shell in a sealing way;
the two end parts of the hollow pipes are respectively fixed in the first end plate and the second end plate in a sealing way;
the housing has a first joint, a second joint, a third joint and a fourth joint, the first joint and the second joint are communicated with the interior of the hollow tube for passing tube-side fluid, and the third joint and the fourth joint are communicated with the interior of the shell for passing shell-side fluid;
the method is characterized in that: the maximum value of the outer diameter of the first end plate is smaller than the minimum value of the inner diameter of the shell, so that the first end plate can stretch into the second end of the shell, penetrate through the inside of the shell along the axial direction and stretch out from the first end of the shell, a positioning piece is arranged between the periphery of the first end plate and the inner wall of the first end of the shell, and meanwhile, the positioning piece and the first end of the shell form axial positioning to further limit the first end plate to move from the first end to the second end of the shell.
2. The heat exchange device of claim 1, wherein the inner wall of the first end of the housing has a first limiting edge extending radially, the outer periphery of the first end plate has a second limiting edge extending radially, the positioning member has a first mating surface and a second mating surface, and the first mating surface and the second mating surface are abutted against the first limiting edge and the second limiting edge, respectively.
3. The heat exchange device of claim 2, wherein the second limiting edge is a step surface protruding out of the outer periphery of the first end plate, and the second matching surface is a step surface protruding out of the inner wall of the positioning member; or, one of the periphery of the first end plate and the inner wall of the positioning piece is provided with a groove, the other is provided with a protrusion, the protrusion is clamped in the groove, and the second limiting edge and the second matching surface are side walls which are contacted with each other and abutted against the protrusion and the groove.
4. The heat exchange device of claim 2 wherein the first stop edge extends around an inner wall of the first end of the housing to form an annular surface, and the first mating surface is an end surface of the positioning member.
5. The heat exchange device of claim 1 wherein the distance between the outer peripheral surface of the positioning member and the inner surface of the corresponding region of the housing surrounding the outer peripheral surface of the positioning member is between 0.02mm and 0.2 mm.
6. The heat exchange device of claim 5 wherein at least a portion of the inner surface of the positioning member contacts a portion of the outer peripheral surface of the first end plate, such that the first end plate is radially positioned within the positioning member.
7. The heat exchange device of claim 1 wherein the positioning member is a broken ring structure.
8. The heat exchange device of claim 1 wherein a gap is provided between the end face of the positioning member and the inner surface of the first end of the housing, a portion of the outer peripheral surface of the first end plate and the end face of the first end cap.
9. The heat exchange device of claim 1 wherein the first end cap is sealingly connected to both the end of the first end of the shell and the end of the first end plate, and the second end cap is sealingly connected to both the end of the second end of the shell and the end of the second end plate.
10. The heat exchange device of claim 1 wherein the first and second end plates each include first and second flanges projecting from the outer edges of the end faces thereof, the ends of the first and second flanges being flush with the ends of the first and second ends of the shell, respectively, forming weld faces that form seals with the outer edges of the first and second end caps, respectively.
11. The heat exchange device of claim 1 wherein the length of the plurality of hollow tubes is 8mm to 20mm greater than the length of the shell.
12. A method of manufacturing a heat exchange device according to any one of claims 1 to 11, comprising the steps of:
(1) two ends of the hollow pipes are respectively fixed in the first end plate and the second end plate in a sealing mode;
(2) a first end plate extending into the second end of the housing, axially through the interior of the housing, and out of the first end of the housing;
(3) a positioning piece is arranged on the periphery of the first end plate, and axial positioning is formed between the positioning piece and the first end plate;
(4) simultaneously pushing the first end plate and the positioning piece into the first end of the shell, so that the positioning piece is arranged between the periphery of the first end plate and the inner wall of the first end of the shell, axial positioning is formed between the positioning piece and the first end of the shell, and the first end cover is hermetically fixed to the first end of the shell;
(5) a second end plate is positioned within the second end of the housing and a second end cap is sealingly secured to the second end of the housing.
13. The method of claim 12, wherein in step (4) the first end cap is sealingly connected to both the end of the first end of the housing and the end of the first end plate, and in step (5) the second end cap is sealingly connected to both the end of the second end of the housing and the end of the second end plate.
14. The method of claim 13, wherein the outer rim of the first end cap forms a seal with a weld surface formed by heat staking the end of the first end of the housing and the end of the first flange, and the outer rim of the second end cap forms a seal with a weld surface formed by heat staking the end of the second end of the housing and the end of the second flange.
CN202010348377.1A 2020-04-28 2020-04-28 Heat exchange equipment and manufacturing method thereof Active CN113566614B (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102077049A (en) * 2008-04-30 2011-05-25 英格索尔-兰德公司 Dual-directional cooler
CN103175420A (en) * 2013-03-21 2013-06-26 淄博万昌化工设备有限公司 Core rotation type shell-and-tube heat exchanger
JP2014074613A (en) * 2012-10-03 2014-04-24 Chiyoda Corp Device for testing airtight of bundle for heat exchanger
WO2014118511A1 (en) * 2013-01-30 2014-08-07 E J Bowman (Birmingham) Limited Shell and tube heat exchanger, end cover and method of manufacturing same
US20170138671A1 (en) * 2015-11-16 2017-05-18 Alfa Laval Corporate Ab Shell-and-tube heat exchanger with seal for isolating shell from tube fluid
WO2018054643A1 (en) * 2016-09-26 2018-03-29 Mahle International Gmbh Heat exchanger
CN108136291A (en) * 2015-10-08 2018-06-08 陶氏环球技术有限责任公司 Include the hollow fiber membrane module of concentrate distributor
CN208187229U (en) * 2018-05-15 2018-12-04 叶财庆 A kind of novel heat exchange pipe expansion appliance
CN109219728A (en) * 2016-06-06 2019-01-15 揖斐电株式会社 Heat exchanger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102077049A (en) * 2008-04-30 2011-05-25 英格索尔-兰德公司 Dual-directional cooler
JP2014074613A (en) * 2012-10-03 2014-04-24 Chiyoda Corp Device for testing airtight of bundle for heat exchanger
WO2014118511A1 (en) * 2013-01-30 2014-08-07 E J Bowman (Birmingham) Limited Shell and tube heat exchanger, end cover and method of manufacturing same
CN103175420A (en) * 2013-03-21 2013-06-26 淄博万昌化工设备有限公司 Core rotation type shell-and-tube heat exchanger
CN108136291A (en) * 2015-10-08 2018-06-08 陶氏环球技术有限责任公司 Include the hollow fiber membrane module of concentrate distributor
US20170138671A1 (en) * 2015-11-16 2017-05-18 Alfa Laval Corporate Ab Shell-and-tube heat exchanger with seal for isolating shell from tube fluid
CN109219728A (en) * 2016-06-06 2019-01-15 揖斐电株式会社 Heat exchanger
WO2018054643A1 (en) * 2016-09-26 2018-03-29 Mahle International Gmbh Heat exchanger
CN208187229U (en) * 2018-05-15 2018-12-04 叶财庆 A kind of novel heat exchange pipe expansion appliance

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