Fabricated heat exchanger

Abstract

The utility model discloses an assembly type heat exchanger which comprises a heat exchange unit, a plurality of fins and a plurality of first connecting frames, the heat exchange unit comprises a plurality of longitudinally arranged heat exchange layers, each heat exchange layer comprises a plurality of horizontally arranged heat exchange tubes, the number of the fins is a plurality, and the fins are evenly distributed in the circumferential direction of the cross section of the heat exchange tubes. The ends, away from the heat exchange pipe, of the fins are fixedly connected with protruding blocks, first grooves are formed in the periphery of the first connecting frame, the multiple fins are fixedly connected to the side wall of the heat exchange pipe, the heat exchange area is increased, and then the heat exchange efficiency is improved; the heat exchange tubes are connected through the first connecting frames, the heat exchange space between the heat exchange tubes and the fins cannot be reduced through the first connecting frames, the heat exchange efficiency of the heat exchange tubes is effectively guaranteed, and therefore the heat exchange efficiency of the heat exchanger cannot be affected no matter the heat exchanger of any size is assembled by a worker.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to an assembled heat exchanger. Background Art

[0002] In chemical production, some gas raw materials are often used, such as liquid ammonia, liquid oxygen, liquid nitrogen, liquid hydrogen, etc. Now more and more chemical companies will be concentrated in a park for centralized gas supply and heat supply to reduce costs. Gas suppliers need to gasify the liquid gas in the storage tank through a heat exchanger and then transport it to customers. For example, the authorization announcement number CN218443453U is a utility model patent for an assembled heat exchanger, including heat exchange tubes and heat exchange tube clamps. The heat exchange tube clamps are clamping structures that are closed up and down. There are multiple heat exchange tubes. The heat exchange tube clamps are closed up and down to clamp the heat exchange tubes so that multiple heat exchange tubes are connected by the heat exchange tube clamps to form a heat exchange tube row. The heat exchange tube clamps are connected to form a detachable heat exchange tube row. Support plates are stacked at both ends of the tube row, so that the heat exchanger is easy to maintain and clean during use; the overall assembled structure allows the heat exchanger to be selected and assembled according to different usage scenarios, greatly improving the assembly efficiency of the heat exchanger.

[0003] However, the heat exchange tube clamp and the support plate are in direct contact with the heat exchange tube, which reduces the heat exchange area of ​​the heat exchange tube on the one hand and the internal heat exchange space on the other hand, which causes local heat accumulation and lowers the heat dissipation efficiency. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies, to provide an assembled heat exchanger, and to solve the technical problem in the prior art that the connectors between the heat exchange tubes lead to a decrease in heat exchange efficiency.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, the utility model provides an assembled heat exchanger, comprising:

[0007] A heat exchange unit, wherein the heat exchange unit comprises a plurality of heat exchange layers arranged longitudinally, and the heat exchange layers comprise a plurality of heat exchange tubes arranged horizontally;

[0008] Fins, the number of the fins is several and they are evenly distributed along the circumferential direction of the cross section of the heat exchange tube, and one end of the fin away from the heat exchange tube is fixedly connected with a protrusion;

[0009] The first connecting frame is provided in a plurality of pieces. The first connecting frame is provided with first grooves on all four sides. The centers of four adjacent heat exchange tubes are connected with the first connecting frame. The first grooves are engaged with the protrusions.

[0010] In some embodiments, a pair of square frames are further included, wherein the square frames are formed by four frame channel steels connected end to end in sequence, and the two ends of the heat exchange unit are respectively fixedly mounted in the two square frames.

[0011] In some embodiments, an angle steel and a first bolt are provided at the connection between every two adjacent frame channel steels, the angle steel is provided with a first through hole, and a second through hole is provided at the connection between each of the frame channel steels, and the first bolt passes through the first through hole and the second through hole in sequence to fix the angle steel to the frame channel steel.

[0012] In some embodiments, a pad is fixedly connected to the bottom of the frame channel steel.

[0013] In some embodiments, a second connecting frame is fixedly connected to a side of the frame channel steel facing the heat exchange tube, and a second connecting frame is provided with a second groove on a side of the second connecting frame facing the heat exchange tube, and the second groove is engaged with the protrusion.

[0014] In some embodiments, the second connecting frame is provided with a third through hole, the frame channel steel is provided with a fourth through hole, a second bolt is provided between the second connecting frame and the frame channel steel, and the second bolt passes through the third through hole and the fourth through hole in sequence to fix the second connecting frame to the frame channel steel.

[0015] In some embodiments, a plurality of connecting elbows are provided between adjacent heat exchange layers, one end of each connecting elbow is connected to the heat exchange tube in any one of the heat exchange layers, and the connecting elbows correspond to the heat exchange tubes one-to-one, and the other end of each connecting elbow is connected to the heat exchange tube in the adjacent heat exchange layer.

[0016] In some embodiments, the heat exchange layer at the top of the heat exchange unit is connected to an input main pipe, one side of the input main pipe is connected to each of the heat exchange tubes in the heat exchange layer, and the input main pipe is provided with a feed port.

[0017] In some embodiments, the heat exchange layer at the bottom of the heat exchange unit is connected to an output main pipe, one side of the output main pipe is connected to each of the heat exchange tubes in the heat exchange layer, and the output main pipe is provided with a discharge port.

[0018] In some embodiments, the feed port and the discharge port are both fixedly connected with flanges.

[0019] In a second aspect, the utility model also provides an assembled heat exchanger.

[0020] Compared with the prior art, the utility model provides an assembled heat exchanger in which a plurality of fins are fixedly connected to the side wall of the heat exchange tube, so that the heat exchange area is increased, thereby accelerating the heat exchange efficiency, and then the protrusions at the ends of the fins are snapped into the first grooves, so that the heat exchange tubes can be connected, and the first connecting frame will not reduce the heat exchange space between the heat exchange tubes and the fins, effectively ensuring the heat exchange efficiency of the heat exchange tubes, thereby achieving that no matter what size of heat exchanger the workers assemble, the heat exchange efficiency of the heat exchanger will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an isometric schematic diagram of an assembled heat exchanger provided by an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 Schematic diagram of the connection relationship between the middle angle steel, the second connecting frame and the square frame;

[0023] Figure 3 yes Figure 2 Structural diagram of the middle square frame;

[0024] Figure 4 yes Figure 2 Schematic diagram of the structure of the middle angle steel;

[0025] Figure 5 yes Figure 2 A schematic diagram of the structure of the second connecting frame;

[0026] Figure 6 yes Figure 1 A schematic structural diagram of the first connecting frame;

[0027] Figure 7 of Figure 1 Schematic diagram of the connection relationship between the heat exchange tubes and fins.

[0028] Explanation of the reference numerals: 1. heat exchange unit; 11. heat exchange layer; 111. heat exchange tube; 12. connecting elbow; 13. input main pipe; 131. feed port; 14. output main pipe; 141. discharge port; 15. flange; 2. fin; 21. bump; 3. first connecting frame; 31. first groove; 4. square frame; 41. frame channel steel; 411. second through hole; 412. pad; 413. fourth through hole; 42. angle steel; 421. first through hole; 43. first bolt; 5. second connecting frame; 51. second groove; 52. third through hole; 53. second bolt. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] In order to solve the technical problem that the heat exchange efficiency is reduced due to the connectors between the heat exchange tubes, the utility model provides an assembled heat exchanger which can ensure the heat exchange efficiency of the heat exchanger.

[0031] It should be noted that the assembled heat exchanger described in the present invention is used for but not limited to liquids and gases. For the convenience of explanation, in the present invention, only an assembled heat exchanger applied to liquids and gases is used as an example for explanation. The principle of an assembled heat exchanger applied to other types of equipment is essentially the same as that applied to liquids and gases, and will not be repeated here.

[0032] See also Figure 1 - Figure 7 ,in, Figure 1 This is a structural schematic diagram of an assembled heat exchanger in an embodiment of the utility model. An assembled heat exchanger includes a heat exchange unit 1, fins 2 and a plurality of first connecting frames 3. The heat exchange unit 1 includes a plurality of longitudinally arranged heat exchange layers 11. The heat exchange layer 11 includes a plurality of horizontally arranged heat exchange tubes 111. The number of fins 2 is several and they are evenly distributed along the circumferential direction of the cross section of the heat exchange tube 111. One end of the fin 2 away from the heat exchange tube 111 is fixedly connected with a protrusion 21. The number of first connecting frames 3 is several. First grooves 31 are provided around the first connecting frame 3. The centers of each of four adjacent heat exchange tubes 111 are connected with a first connecting frame 3, and the first grooves 31 are snap-fitted with the protrusion 21.

[0033] In this embodiment, a plurality of fins 2 are fixedly connected to the side wall of the heat exchange tube 111, so that the heat exchange area is increased, thereby accelerating the heat exchange efficiency, and then the protrusion 21 at the end of the fin 2 is engaged with the first groove 31, so that the heat exchange tubes 111 are connected, and the first connecting frame 3 will not reduce the heat exchange space between the heat exchange tube 111 and the fin 2, effectively ensuring the heat exchange efficiency of the heat exchange tube 111, thereby achieving that no matter what size of heat exchanger the workers assemble, it will not affect the heat exchange efficiency of the heat exchanger.

[0034] First, the size of the heat exchange unit 1 is determined according to on-site requirements; then, the heat exchange tubes 111 are arranged at equal intervals in a straight line direction to form a plurality of heat exchange layers 11, and the heat exchange layers 11 are arranged up and down to form the heat exchange unit 1; finally, a first connecting frame 3 is placed between each four adjacent heat exchange tubes 111, and the first grooves 31 around them are engaged with the four protrusions 21 one by one, thereby realizing the assembly of the heat exchange unit 1.

[0035] In one embodiment, see Figure 3 , and further includes a pair of square frames 4 , which are formed by four frame channel steels 41 connected end to end in sequence, and the two ends of the heat exchange unit 1 are fixedly sleeved in the two square frames 4 respectively.

[0036] In this embodiment, two square frames 4 support the two ends of the heat exchange unit 1 respectively, and four frame channel steels 41 are detachably connected by bolts, so that the length of the frame channel steels 41 can be adjusted according to the size of the heat exchanger required on site.

[0037] In one embodiment, see Figure 2 - Figure 4 An angle steel 42 and a first bolt 43 are provided at the connection between every two adjacent frame channel steels 41. The angle steel 42 is provided with a first through hole 421. A second through hole 411 is provided at the connection between each frame channel steel 41. The first bolt 43 passes through the first through hole 421 and the second through hole 411 in sequence to fix the angle steel 42 to the frame channel steel 41.

[0038] In this embodiment, the cross-section of the angle steel 42 is L-shaped. The angle steel 42 cooperates with the first bolt 43 to achieve fixation between two adjacent frame channel steels 41. Each angle steel 42 is equipped with four first bolts 43, and every two first bolts 43 form a group and are used to be fixedly connected to any frame channel steel 41.

[0039] It should be noted that, in order for the first bolt 43 to better fix the angle steel 42 and the frame channel steel 41 , the hole diameters of the first through hole 421 and the second through hole 411 are the same as the cross-sectional diameter of the first bolt 43 .

[0040] In one embodiment, see Figure 1 - Figure 3 A pad 412 is fixedly connected to the bottom of the frame channel steel 41 .

[0041] In this embodiment, the function of the pad 412 is to increase the contact area between the bottom of the frame channel steel 41 and the ground, thereby improving the stability of the device.

[0042] Furthermore, rubber is provided at the bottom of the frame channel steel 41 to effectively mitigate the adverse effects caused by the vibration of the device.

[0043] In one embodiment, see Figure 2 A second connecting frame 5 is fixedly connected to the side of the frame channel steel 41 facing the heat exchange tube 111 . A second groove 51 is formed on the side of the second connecting frame 5 facing the heat exchange tube 111 . The second groove 51 is engaged with the protrusion 21 .

[0044] In this embodiment, each second connecting frame 5 has two second grooves 51 , and the second connecting frame 5 is located between two adjacent heat exchange tubes 111 . The two second grooves 51 are engaged with the protrusions on two adjacent fins 2 , thereby achieving fixation between the heat exchange tube 111 and the frame channel steel 41 .

[0045] In one embodiment, see Figure 3 and Figure 5 The second connecting frame 5 is provided with a third through hole 52, the frame channel steel 41 is provided with a fourth through hole 413, a second bolt 53 is provided between the second connecting frame 5 and the frame channel steel 41, and the second bolt 53 passes through the third through hole 52 and the fourth through hole 413 in sequence to fix the second connecting frame 5 to the frame channel steel 41.

[0046] In this embodiment, the second bolt 53 passes through the third through hole 52 and the fourth through hole 413 in sequence, so that the second connecting frame 5 is fixedly connected to the frame channel steel 41. This connection method is convenient for workers to disassemble and assemble, and is suitable for use in scenarios with different size requirements.

[0047] It should be noted that the fourth through hole 413 is opened after the workers determine the size of the heat exchanger, so that the height of the second connecting frame 5 meets the position required by the plan.

[0048] It should be noted that, in order for the second bolt 53 to better fix the second connecting frame 5 and the frame channel steel 41 , the diameters of the third through hole 52 and the fourth through hole 413 are the same as the cross-sectional diameter of the second bolt 53 .

[0049] In one embodiment, see Figure 1 A plurality of connecting elbows 12 are provided between adjacent heat exchange layers 11, one end of each connecting elbow 12 is connected to a heat exchange tube 111 in any heat exchange layer 11, and the connecting elbows 12 correspond to the heat exchange tubes 111 one by one, and the other end of each connecting elbow 12 is connected to a heat exchange tube 111 in an adjacent heat exchange layer 11.

[0050] In this embodiment, the connection elbow 12 is provided so that each heat exchange layer 11 can be connected in series, and the fluid can pass through each heat exchange layer 11 from top to bottom and then be discharged, which effectively prolongs the effective time of fluid heat exchange and improves the heat exchange effect.

[0051] In one embodiment, see Figure 1 The heat exchange layer 11 at the top of the heat exchange unit 1 is connected to an input main pipe 13 , one side of the input main pipe 13 is connected to each heat exchange tube 111 in the heat exchange layer 11 , and the input main pipe 13 is provided with a feed port 131 .

[0052] In this embodiment, the input main pipe 13 is connected to the topmost heat exchange layer 11, so that the fluid can pass through each heat exchange layer 11 from top to bottom. A plurality of through holes are provided on the side of the input main pipe 13 facing the heat exchange layer 11, and the input main pipe 13 is connected to each heat exchange tube 111 through the plurality of through holes, thereby realizing the connection between the input main pipe 13 and the heat exchange layer 11.

[0053] It should be noted that the fluid entering the heat exchange layer 11 is transformed from the input main pipe 13 with a larger diameter to a plurality of heat exchange tubes 111 with smaller diameters, thereby increasing the contact area between the fluid and the outside world, thereby effectively improving the heat exchange efficiency.

[0054] In one embodiment, see Figure 1 The heat exchange layer 11 at the bottom of the heat exchange unit 1 is connected to an output main pipe 14 , one side of the output main pipe 14 is connected to each heat exchange tube 111 in the heat exchange layer 11 , and the output main pipe 14 is provided with a discharge port 141 .

[0055] In this embodiment, after the fluid cooled by the heat exchange unit 1 flows out of the bottom heat exchange layer 11, it is collected through the output main pipe 14, so that the fluids in each heat exchange tube 111 of the bottom layer are gathered together, which is convenient for the subsequent unified transmission of the fluid.

[0056] In one embodiment, see Figure 1 The feed port 131 and the discharge port 141 are both fixedly connected with flanges 15 .

[0057] In this embodiment, the flange 15 is provided with fastening bolts, and another matching flange is fixedly connected to the transmission pipeline connected thereto. The two flanges are flange-connected by fastening bolts, so that the input main pipe 13 and the output main pipe 14 are connected to the external storage tank through the flange 15, effectively ensuring the stability during the fluid transportation process.

[0058] Furthermore, the flange 15 can also be provided with a connecting hose to prevent problems such as deformation of the connecting pipe caused by displacement of the utility model.

[0059] In order to better understand the present invention, the following Figures 1 to 7 The technical solution of the utility model is described in detail:

[0060] First, the size of the heat exchange unit 1 is determined according to the on-site requirements; then, according to the formulated plan, a frame channel steel 41 of appropriate length is selected and two square frames 4 are formed by angle steels 42 and first bolts 43; then, the second connecting frame 5 is installed in the square frame 4 by second bolts 53; then, each heat exchange tube 111 is arranged at equal intervals in a straight line direction to form a plurality of heat exchange layers 11, and each heat exchange layer 11 is arranged up and down, and a first connecting frame 3 is placed between each four adjacent heat exchange tubes 111, and the first grooves 31 around are connected to the four protrusions 21 one by one, so that the heat exchange unit 1 is assembled; finally, the two ends of the heat exchange unit 1 are connected to the square frame 4 by the second grooves 51 and the protrusions 21 one by one, so that the heat exchange unit 1 is connected to the square frame 4, and the assembly of the heat exchanger is completed. The utility model not only does not reduce the heat exchange area, but also increases the heat exchange area and heat exchange space through the connection method of the first connecting frame 3, the second connecting frame 5 and the fin 2, thereby effectively improving the heat exchange efficiency of the heat exchanger.

[0061] The fluid enters from the input main pipe 13 and uses the connecting elbow 12 to make the fluid pass through each heat exchange layer 11 from top to bottom and then be discharged from the output main pipe 14, thus completing the heat exchange work.

[0062] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An assembled heat exchanger, characterized in that: include: A heat exchange unit, wherein the heat exchange unit comprises a plurality of heat exchange layers arranged longitudinally, and the heat exchange layers comprise a plurality of heat exchange tubes arranged horizontally; Fins, the number of the fins is several and they are evenly distributed along the circumferential direction of the cross section of the heat exchange tube, and one end of the fin away from the heat exchange tube is fixedly connected with a protrusion; The first connecting frame is provided in a plurality of pieces. The first connecting frame is provided with first grooves on all four sides. The centers of four adjacent heat exchange tubes are connected with the first connecting frame. The first grooves are engaged with the protrusions.

2. The assembled heat exchanger according to claim 1, characterized in that: It also includes a pair of square frames, which are formed by four frame channel steels connected end to end in sequence, and the two ends of the heat exchange unit are respectively fixedly sleeved in the two square frames.

3. The assembled heat exchanger according to claim 2, characterized in that: An angle steel and a first bolt are provided at the connection between every two adjacent frame channel steels, the angle steel is provided with a first through hole, and a second through hole is provided at the connection between each of the frame channel steels, the first bolt passes through the first through hole and the second through hole in sequence to fix the angle steel to the frame channel steel.

4. The assembled heat exchanger according to claim 2, characterized in that: A backing plate is fixedly connected to the bottom of the frame channel steel.

5. The assembled heat exchanger according to claim 2, characterized in that: A second connecting frame is fixedly connected to a side of the frame channel steel facing the heat exchange tube, and a second groove is formed on a side of the second connecting frame facing the heat exchange tube, and the second groove is engaged with the protrusion.

6. The assembled heat exchanger according to claim 5, characterized in that: The second connecting frame is provided with a third through hole, the frame channel steel is provided with a fourth through hole, a second bolt is provided between the second connecting frame and the frame channel steel, the second bolt passes through the third through hole and the fourth through hole in sequence and fixes the second connecting frame to the frame channel steel.

7. The assembled heat exchanger according to claim 1, characterized in that: A plurality of connecting elbows are provided between adjacent heat exchange layers, one end of each connecting elbow is connected to the heat exchange tube in any one of the heat exchange layers, and the connecting elbows correspond to the heat exchange tubes one-to-one, and the other end of each connecting elbow is connected to the heat exchange tube in the adjacent heat exchange layer.

8. The assembled heat exchanger according to claim 1, characterized in that: The heat exchange layer at the top of the heat exchange unit is connected to an input main pipe, one side of the input main pipe is connected to each of the heat exchange tubes in the heat exchange layer, and the input main pipe is provided with a feed port.

9. The assembled heat exchanger according to claim 8, characterized in that: The heat exchange layer at the bottom of the heat exchange unit is connected to an output main pipe, one side of the output main pipe is connected to each of the heat exchange tubes in the heat exchange layer, and the output main pipe is provided with a discharge port.

10. The assembled heat exchanger according to claim 9, characterized in that: The feed port and the discharge port are both fixedly connected with flanges.

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