Heat exchanger for parallel refrigerating unit
By designing a heat exchanger for parallel refrigeration units, the heat exchange pipe can be easily separated and cleaned by using the flange, which solves the problem of the integrated structure of the heat exchange pipe and the shell in the prior art. The problem is that the heat exchange pipe is effectively cleaned.
Patent Information
- Application Number
- CN202421044703.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-14
Smart Images
Figure CN222528398U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of heat exchangers, in particular to a heat exchanger for a parallel refrigeration unit. Background Art
[0002] The shell and tube heat exchanger is the most widely used heat exchanger in chemical industry and alcohol production. It is mainly composed of shell, tube sheet, heat exchange tube, head, baffle, etc. It is suitable for condensation, heating, reboiling, waste heat recovery and other process links. High-pressure shell and tube heat exchanger mostly uses tube body as container, and then the cold fluid and hot fluid enter the tube body through cold flow tube and hot flow tube respectively, so that they are baffled and heat exchanged multiple times inside the tube body through baffle. After the heat exchange is completed, the fluid is discharged through the discharge pipe. In the existing shell and tube heat exchanger, the heat exchange tube and the shell are an integrated structure, which is not convenient for cleaning the periphery of the heat exchange tube. Therefore, we designed a heat exchanger for parallel refrigeration units. Utility Model Content
[0003] The utility model provides a heat exchanger for a parallel refrigeration unit, which is used to solve the defects in the prior art.
[0004] The utility model is realized through the following technical solutions:
[0005] A heat exchanger for a parallel refrigeration unit comprises an outer shell, wherein a plurality of heat exchange tubes are arranged in the outer shell, and end covers are respectively arranged at the left and right ends of the outer shell, and a cold fluid feed tube and a cold fluid discharge tube are sequentially connected and installed on the two end covers, and a hot fluid feed tube and a hot fluid discharge tube are sequentially connected and installed on the two ends of the outer shell, characterized in that: a first circular plate is fixedly installed on one end of a plurality of heat exchange tubes, and a second circular plate is fixedly installed on the other end of a plurality of heat exchange tubes, the diameter of the first circular plate is greater than the diameter of the second circular plate, and first through holes are respectively provided on the first circular plate and the second circular plate corresponding to the heat exchange tubes, an end of the outer shell close to the first circular plate, the first circular plate and an end cover close to the first circular plate are detachably connected through a flange, an end of the outer shell close to the second circular plate is connected to an end cover close to the second circular plate through a flange, and one side of the second circular plate is fitted with one side of the close flange.
[0006] In the heat exchanger for a parallel refrigeration unit as described above, a plurality of grooves are respectively provided on the left and right sides of the first circular plate, a plurality of corresponding and identical grooves are respectively provided on the side of the flanges on the left and right sides of the first circular plate close to the first circular plate, a plurality of corresponding and identical grooves are also respectively provided on the side where the two flanges close to the second circular plate are close to each other and on the side where the second circular plate is close to the adjacent flange, and the same sealing gasket is respectively provided in the two corresponding grooves.
[0007] As described above, in a heat exchanger for a parallel refrigeration unit, a plurality of threaded grooves are provided on the second circular plate, a plurality of mounting holes are provided on the flange close to the second circular plate corresponding to the threaded grooves, bolts are respectively provided in the mounting holes, and one end of the bolts is threadedly connected to the corresponding threaded grooves.
[0008] As described above, a heat exchanger for a parallel refrigeration unit, several intermediate baffles are fixedly installed in the shell, several second through holes are respectively provided on the intermediate baffles corresponding to the heat exchange tubes, the heat exchange tubes are fixedly installed in the corresponding second through holes, upper baffles and lower baffles are alternately provided between two adjacent intermediate baffles, the top of the upper baffle and the bottom of the lower baffle are circular arcs coaxial with the shell, the arc surfaces of the upper baffle and the lower baffle are respectively in airtight sliding contact with the inner wall of the shell, the outer periphery of the upper baffle and the lower baffle are respectively provided with sliding grooves, two sliding blocks are fixedly installed on the inner wall of the shell corresponding to the sliding grooves, the inner wall of the sliding grooves is in sliding contact with the outer wall of the corresponding sliding block, the lower side of the upper baffle is flush with the upper side of the intermediate baffle, the upper side of the lower baffle is flush with the upper side of the lower baffle, and the shell is provided with a driving device capable of driving the upper baffle and the lower baffle to move.
[0009] As described above, a heat exchanger for a parallel refrigeration unit, the driving device includes two screw rods, threaded through holes are respectively provided on the upper baffle plate and the lower baffle plate, and the same screw rod is threadedly installed in the several threaded through holes on the upper baffle plate and the lower baffle plate in sequence, and the screw rod is rotatably installed on the inner wall of the outer shell, and one end of the screw rod is fixedly installed with a coaxial first bevel gear, and one side of the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixedly installed with a coaxial vertical rod, and the vertical rods extend out of the outer shell respectively.
[0010] In the heat exchanger for a parallel refrigeration unit as described above, a hand wheel is fixedly mounted on one end of the vertical rod extending out of the shell.
[0011] The utility model has the advantages that the utility model has a simple structure and an ingenious design, and can separate the shell from the heat exchange tube, so as to facilitate the cleaning of the outer periphery of the heat exchange tube, meet market demand, and is suitable for promotion. When using the utility model, a cold fluid is introduced through the cold fluid feed pipe, and the cold fluid flows through the left end cover and the first through hole on the first circular plate into the heat exchange tube, and a hot fluid is introduced into the shell through the hot fluid feed pipe, and the cold fluid in the heat exchange tube exchanges heat with the hot fluid in the shell, and the cold fluid after the heat exchange is completed is discharged from the heat exchange tube through the cold fluid discharge pipe, and the hot fluid in the shell is discharged from the shell through the hot fluid discharge pipe; when the outer periphery of the heat exchange tube needs to be cleaned, the left end cover is separated from the first circular plate and the left end of the shell, so that the three are no longer flange-connected, and then the first circular plate is moved to the left, and the first circular plate moves to the left to drive several heat exchange tubes and the second circular plate to move to the left, until the heat exchange tube is completely removed from the shell, and the outer periphery of the heat exchange tube can be cleaned at this time, which solves the problem that the heat exchange tube and the shell are an integrated structure, and thus the outer periphery of the heat exchange tube cannot be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0013] Figure 1 It is a structural schematic diagram of the utility model; Figure 2 yes Figure 1 A-direction view; Figure 3 for Figure 1 A partial enlarged view of Ⅰ.
[0014] Figure numerals: 1, shell, 2, heat exchange tube, 3, end cover, 4, cold fluid feed pipe, 5, cold fluid discharge pipe, 6, hot fluid feed pipe, 7, hot fluid discharge pipe, 8, first circular plate, 9, second circular plate, 20, groove, 21, sealing gasket, 30, threaded groove, 31, mounting hole, 32, bolt, 40, middle baffle, 41, upper baffle, 42, lower baffle, 43, slide groove, 44, slider, 50, screw rod, 51, threaded through hole, 52, first bevel gear, 53, second bevel gear, 54, vertical rod, 60, handwheel. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] A heat exchanger for a parallel refrigeration unit, such as Figure 1 , 2 As shown, it includes a shell 1, in which several heat exchange tubes 2 are arranged, and end covers 3 are respectively arranged at the left and right ends of the shell 1. A cold fluid feed pipe 4 and a cold fluid discharge pipe 5 are installed on the two end covers 3 in sequence, and a hot fluid feed pipe 6 and a hot fluid discharge pipe 7 are installed on the two ends of the shell 1 in sequence. It is characterized in that: one end of several heat exchange tubes 2 is fixedly installed with the same first circular plate 8, and the other end of several heat exchange tubes 2 is fixedly installed with the same second circular plate 9, the diameter of the first circular plate 8 is greater than the diameter of the second circular plate 9, and first through holes are respectively opened on the first circular plate 8 and the second circular plate 9 corresponding to the heat exchange tubes 2, one end of the shell 1 close to the first circular plate 8, the first circular plate 8 and an end cover 3 close to the first circular plate 8 are detachably connected through a flange, one end of the shell 1 close to the second circular plate 9 is connected to the end cover 3 close to the second circular plate 9 through a flange, the shell 1, the first circular plate 8 and the second circular plate 9 are coaxially arranged, and one side of the second circular plate 9 is in contact with one side of the close flange. The utility model has a simple structure and an ingenious design, and can separate the shell 1 from the heat exchange tube 2, thereby facilitating cleaning of the periphery of the heat exchange tube 2, can meet market demand, and is suitable for promotion. When the utility model is used, cold fluid is introduced through the cold fluid feed pipe 4, and the cold fluid flows through the left end cover 3 and the first through hole on the first circular plate 8 into the heat exchange tube 2, and the hot fluid is introduced into the shell 1 through the hot fluid feed pipe 6. The cold fluid in the heat exchange tube 2 exchanges heat with the hot fluid in the shell 1. The cold fluid after the heat exchange is completed is discharged from the heat exchange tube 2 through the cold fluid discharge pipe 5, and the hot fluid in the shell 1 is discharged from the shell 1 through the hot fluid discharge pipe 7; when the periphery of the heat exchange tube 2 needs to be cleaned, the left end cover 3 is separated from the first circular plate 8 and the left end of the shell 1 so that the three are no longer flange-connected, and then the first circular plate 8 is moved to the left. The first circular plate 8 moves to the left, driving several heat exchange tubes 2 and the second circular plate 9 to move to the left until the heat exchange tube 2 is completely moved out of the shell 1. At this time, the periphery of the heat exchange tube 2 can be cleaned, which solves the problem that the heat exchange tube 2 and the shell 1 are an integrated structure, so that the periphery of the heat exchange tube 2 cannot be cleaned.
[0017] Specifically, as shown in the figure, in this embodiment, several grooves 20 are respectively provided on the left and right sides of the first circular plate 8, and several one-to-one corresponding and identical grooves 20 are respectively provided on the side of the flanges on the left and right sides of the first circular plate 8 close to the first circular plate 8, and several one-to-one corresponding and identical grooves 20 are also respectively provided on the side of the two flanges close to the second circular plate 9 and the side of the second circular plate 9 and the close flanges close to each other, and several grooves 20 on the same vertical plane are evenly distributed circumferentially about the axis of the housing 1, and the same sealing gasket 21 is respectively provided in the corresponding two grooves 20. The sealing gasket 21 can increase the sealing performance between the first circular plate 8 and the two flanges on the left and right sides, the two flanges on the right side, and the second circular plate 9 and the close flanges.
[0018] Specifically, as shown in the figure, in this embodiment, a plurality of thread grooves 30 are provided on the second circular plate 9, and the plurality of thread grooves 30 are evenly distributed circumferentially about the axis of the second circular plate 9. A plurality of mounting holes 31 are provided on the flange close to the second circular plate 9 corresponding to the thread grooves 30, and bolts 32 are respectively provided in the mounting holes 31, and one end of the bolt 32 is threadedly connected with the corresponding thread groove 30. The second circular plate 9 is connected to the flange close to the second circular plate 9 by the bolts 32, so that the sealing between the second circular plate 9 and the flange close to the second circular plate 9 can be further increased.
[0019] Further, as shown in the figure, several intermediate baffles 40 are fixedly installed in the shell 1 described in this embodiment, and the front and rear sides of the intermediate baffles 40 are arc-shaped coaxial with the shell 1. The front and rear sides of the intermediate baffles 40 are respectively fixedly connected to the inner wall of the shell 1. Several second through holes are opened on the intermediate baffles 40 corresponding to the heat exchange tubes 2, and the heat exchange tubes 2 are fixedly installed in the corresponding second through holes. Upper baffles 41 and lower baffles 42 are alternately arranged between two adjacent intermediate baffles 40 in sequence. The top of the upper baffle 41 and the bottom of the lower baffle 42 are coaxial with the shell 1. Arc, the arc surfaces of the upper baffle plate 41 and the lower baffle plate 42 are respectively in airtight sliding contact with the inner wall of the shell 1, and the outer peripheries of the upper baffle plate 41 and the lower baffle plate 42 are respectively provided with slide grooves 43, and two sliders 44 are fixedly installed on the inner wall of the shell 1 corresponding to the slide grooves 43, and the inner walls of the slide grooves 43 are in sliding contact with the outer walls of the corresponding sliders 44, the lower side of the upper baffle plate 41 is flush with the upper side of the middle baffle plate 40, and the upper side of the lower baffle plate 42 is flush with the upper side of the lower baffle plate 42, and the shell 1 is provided with a driving device that can drive the upper baffle plate 41 and the lower baffle plate 42 to move. The upper baffle 41 and the lower baffle 42 are driven to move to the left by a driving device, so that the lower side of the upper baffle 41 fits with the upper side of the corresponding middle baffle 40, and the upper side of the lower baffle 42 fits with the upper side of the corresponding middle baffle 40, and the cold fluid flows in a serpentine manner in the outer shell 1, extending the travel of the cold fluid in the outer shell 1 to achieve better heat exchange; when it is necessary to reduce the heat exchange efficiency, the upper baffle 41 or the lower baffle 42 is driven to move to the right by a driving device, so that the upper baffle 41 or the lower baffle 42 moves between the corresponding two middle baffles 40, at this time, the cold fluid flows in a wave shape through the space between the middle baffle 40 and the upper baffle 41 or the lower baffle 42, which reduces the extension of the travel of the cold fluid in the outer shell 1 and reduces the heat exchange efficiency.
[0020] Further, as shown in the figure, the driving device described in this embodiment includes two screw rods 50, and the upper baffle plate 41 and the lower baffle plate 42 are respectively provided with threaded through holes 51, and the same screw rod 50 is sequentially threadedly installed in the plurality of threaded through holes 51 on the upper baffle plate 41 and the lower baffle plate 42, and the screw rod 50 is rotatably installed on the inner wall of the housing 1, and one end of the screw rod 50 is respectively fixedly installed with a coaxial first bevel gear 52, and one side of the first bevel gear 52 is respectively meshed with a second bevel gear 53, and the second bevel gear 53 is respectively fixedly installed with a coaxial vertical rod 54, and the vertical rod 54 extends out of the housing 1, and the vertical rod 54 passes through the reserved holes on the housing 1, and is rotatably installed on the housing 1 through a sealed bearing. When the vertical rod 54 is twisted, the vertical rod 54 rotates to drive the corresponding second bevel gear 53 to rotate, and the second bevel gear 53 rotates to drive the corresponding first bevel gear 52 and the screw rod 50 to rotate, and the screw rod 50 rotates to make the corresponding upper baffle plate 41 or lower baffle plate 42 move left and right.
[0021] Furthermore, as shown in the figure, one end of the vertical rod 54 extending out of the housing 1 is respectively fixedly mounted with a hand wheel 60. It is more convenient and labor-saving to turn the vertical rod 54 through the hand wheel 60.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A heat exchanger for a parallel refrigeration unit, comprising a shell (1), a plurality of heat exchange tubes (2) are arranged in the shell (1), end covers (3) are respectively arranged at the left and right ends of the shell (1), a cold fluid feed pipe (4) and a cold fluid discharge pipe (5) are sequentially connected and installed on the two end covers (3), and a hot fluid feed pipe (6) and a hot fluid discharge pipe (7) are sequentially connected and installed at the two ends of the shell (1), characterized in that: One end of a plurality of heat exchange tubes (2) is fixedly mounted on a same first circular plate (8), and the other end of a plurality of heat exchange tubes (2) is fixedly mounted on a same second circular plate (9); the diameter of the first circular plate (8) is greater than the diameter of the second circular plate (9); first through holes are respectively provided on the first circular plate (8) and the second circular plate (9) corresponding to the heat exchange tubes (2); an end of the outer shell (1) close to the first circular plate (8), the first circular plate (8) and an end cover (3) close to the first circular plate (8) are detachably connected via a flange; an end of the outer shell (1) close to the second circular plate (9) is connected to the end cover (3) close to the second circular plate (9) via a flange; and one side of the second circular plate (9) is in contact with one side of the close flange.
2. The heat exchanger for a parallel refrigeration unit according to claim 1, characterized in that: The left and right sides of the first circular plate (8) are respectively provided with a plurality of grooves (20); the flanges on the left and right sides of the first circular plate (8) are respectively provided with a plurality of identical grooves (20) on the sides close to the first circular plate (8); the sides close to the two flanges of the second circular plate (9) and the sides close to the second circular plate (9) are also provided with a plurality of identical grooves (20) on the sides close to the flanges; and the same sealing gasket (21) is respectively provided in the two corresponding grooves (20).
3. The heat exchanger for a parallel refrigeration unit according to claim 1, characterized in that: The second circular plate (9) is provided with a plurality of thread grooves (30), and a flange close to the second circular plate (9) is provided with a plurality of mounting holes (31) corresponding to the thread grooves (30). Bolts (32) are respectively arranged in the mounting holes (31), and one end of the bolt (32) is threadedly connected to the corresponding thread groove (30).
4. The heat exchanger for a parallel refrigeration unit according to claim 1, characterized in that: A plurality of intermediate baffles (40) are fixedly installed in the shell (1), and a plurality of second through holes are respectively provided on the intermediate baffles (40) corresponding to the heat exchange tubes (2). The heat exchange tubes (2) are fixedly installed in the corresponding second through holes. An upper baffle (41) and a lower baffle (42) are alternately arranged between two adjacent intermediate baffles (40). The top of the upper baffle (41) and the bottom of the lower baffle (42) are arcs coaxial with the shell (1), and the arc surfaces of the upper baffle (41) and the lower baffle (42) are respectively airtightly slidable with the inner wall of the shell (1). The upper baffle plate (41) and the lower baffle plate (42) are respectively provided with a slide groove (43) on their outer peripheries, and two sliders (44) are fixedly installed on the inner wall of the housing (1) corresponding to the slide groove (43). The inner wall of the slide groove (43) and the outer wall of the corresponding slider (44) are in sliding contact and cooperation. The lower side of the upper baffle plate (41) is flush with the upper side of the middle baffle plate (40), and the upper side of the lower baffle plate (42) is flush with the upper side of the lower baffle plate (42). The housing (1) is provided with a driving device capable of driving the upper baffle plate (41) and the lower baffle plate (42) to move.
5. The heat exchanger for a parallel refrigeration unit according to claim 4, characterized in that: The driving device comprises two screw rods (50), the upper baffle plate (41) and the lower baffle plate (42) are respectively provided with threaded through holes (51), the same screw rod (50) is sequentially threadedly mounted in the plurality of threaded through holes (51) on the upper baffle plate (41) and the lower baffle plate (42), the screw rod (50) is rotatably mounted on the inner wall of the housing (1), one end of the screw rod (50) is respectively fixedly mounted with a coaxial first bevel gear (52), one side of the first bevel gear (52) is respectively meshed with a second bevel gear (53), the second bevel gear (53) is respectively fixedly mounted with a coaxial vertical rod (54), and the vertical rod (54) protrudes out of the housing (1).
6. A heat exchanger for a parallel refrigeration unit according to claim 5, characterized in that: One end of the vertical rod (54) extending out of the housing (1) is fixedly mounted with a hand wheel (60).