Heat exchange sheet convenient to disassemble and heat exchanger

Abstract

The utility model discloses a heat exchange sheet convenient to disassemble and a heat exchanger, and mainly relates to the field of chemical heat exchangers. The heat exchange piece comprises a first fin frame and a second fin frame which are oppositely arranged left and right, the first fin frame comprises a plurality of first fins which are arranged at equal intervals and connected with each other, the second fin frame comprises a plurality of second fins which are arranged at equal intervals and connected with each other, and the first fins and the second fins are U-shaped pieces with the same shape. U-shaped inserting grooves are formed in the adjacent sides of the first fins and the second fins respectively, the groove bottoms of the U-shaped inserting grooves are in a semi-arc shape, and the first fins and the second fins are alternately arranged. The utility model has the beneficial effects that through the first fin frame and the second fin frame which are of an integrated structure and are spliced and inserted relative to the tube nest in a semi-surrounding manner, the quick disassembly and assembly relative to the pipeline are realized.

Description

Technical Field

[0001] The utility model relates to the field of chemical heat exchangers, in particular to a heat exchange fin and a heat exchanger which are convenient to disassemble. Background Technique

[0002] The finned tube radiator is a heat exchange device most widely used in gas-liquid heat exchangers. It strengthens heat transfer by adding fins to ordinary base tubes. The base tubes can be made of steel tubes, stainless steel tubes, copper tubes, etc., and the fins can also be made of steel strips, stainless steel strips, copper strips, aluminum strips, etc.

[0003] In the existing processing technology, the fins are directly welded to the heat exchange tubes. In the process of use, the problems include: the ash accumulated between the fins will cause the heat efficiency to decrease, and the existing fixed fins are difficult to clean; the welding positions of the fins and the heat exchange tubes will be damaged due to welding technology and use corrosion during use, and local damage cannot be replaced, resulting in the scrapping of the entire tube body and high maintenance costs.

[0004] In view of the problems brought by the non-removability of the fins, some improvements have been made in the existing technology. For example, in the patent "A detachable heat dissipation fin (Publication (Announcement) No.: CN220339189U)", the method of splitting the fins has been discussed, but to disassemble the fins, the heat exchange tubes also need to be disassembled together, and the disassembly and installation are still relatively complicated. Content of the Utility Model

[0005] The purpose of the utility model is to provide a heat exchange fin and a heat exchanger which are convenient to disassemble. It realizes the rapid disassembly and assembly relative to the pipeline through the first fin frame and the second fin frame with an integral structure and semi-surrounding and inserting relative to the row of tubes.

[0006] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0007] A heat exchange fin convenient to disassemble includes a first fin frame and a second fin frame arranged oppositely left and right. The first fin frame includes a plurality of first fins arranged at equal intervals and connected to each other. The second fin frame includes a plurality of second fins arranged at equal intervals and connected to each other. The first fins and the second fins are U-shaped sheets with the same shape, and the first fins and the second fins are respectively provided with U-shaped slots on the adjacent sides. The bottom of the U-shaped slot is semi-circular arc-shaped, and the first fins and the second fins are arranged alternately.

[0008] The first fins and the second fins have the same shape and both include semi-circular ring sheets. Both ends of the semi-circular ring sheets are connected with rectangular sheets integrally formed therewith. The rectangular sheets extend along the tangential direction of both ends of the semi-circular ring sheets. The rectangular sheets and the semi-circular ring sheets are coplanar. The inner circle of the semi-circular ring sheet is the bottom of the U-shaped slot.

[0009] A first upper connecting piece or a first lower connecting piece is provided between adjacent first fins, the bottom side of the first upper connecting piece is fixed to the upper side of the semicircular ring piece, the top side of the first lower connecting piece is fixed to the lower side of the semicircular ring piece, and the first upper connecting piece and the first lower connecting piece are alternately arranged;

[0010] A second upper connecting piece or a second lower connecting piece is provided between adjacent second fins, the bottom side of the second upper connecting piece is fixed to the upper side of the semicircular ring piece, the top side of the second lower connecting piece is fixed to the lower side of the semicircular ring piece, and the second upper connecting piece and the second lower connecting piece are alternately arranged.

[0011] A first slot movably connected to the rectangular piece of the second fin is provided in the center of the bottom side of the first upper connecting piece and the top side of the first lower connecting piece, and a second slot movably connected to the rectangular piece of the first fin is provided in the center of the bottom side of the second upper connecting piece and the top side of the second lower connecting piece.

[0012] A first upper mounting hole is provided on the first upper connecting plate, and a second upper mounting hole is provided on the second upper connecting plate, wherein the first upper mounting hole and the second upper mounting hole overlap coaxially;

[0013] A first lower mounting hole is provided on the first lower connecting plate, and a second lower mounting hole is provided on the second lower connecting plate. The second lower mounting hole overlaps coaxially with the first lower mounting hole.

[0014] It also includes a connecting piece, which is arranged on the upper side and / or the lower side of the heat exchange plate. The connecting piece includes a strip plate and a pressure plate arranged in parallel. The strip plate is provided with a row of multiple plugs at equal intervals along its length direction. The plugs are movably connected with the coaxial first upper mounting hole and the second upper mounting hole. The plugs are movably connected with the coaxial first lower mounting hole and the second lower mounting hole. The pressure plate is provided with through holes corresponding to the plugs, and nuts are threadedly connected to the ends of all or part of the plugs.

[0015] A heat exchanger comprises a shell and a pipe installed in the shell, wherein the pipe is a serpentine pipe, and comprises tubes arranged in parallel from top to bottom, wherein one end of adjacent tubes is connected by an elbow, and adjacent elbows are respectively arranged at both ends of the tubes, and further comprises the above-mentioned heat exchange fins, wherein the first fin rack and the second fin rack are arranged on the left and right relative to the tubes, the bottom of the U-shaped slot of the first fin is in contact with the side wall of the tube, and the U-shaped slot of the second fin is in contact with the side wall of the tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The first fin and the second fin adopt a U-shaped structure that is plugged in left and right relative to the tube array, so as to realize the alternating plug-in combination of the tube arrays on both sides, and the first / second wing frame formed by the first / second fins connected in a row realizes an integrated quick plug-in operation, and the tube array can be enclosed and fixed by tightening and fixing the first wing frame and the second wing frame relative to each other, so that the disassembly and installation are very fast and simple, and the disassembly does not require moving pipes, so it is convenient to carry out maintenance and cleaning after disassembly, which greatly reduces the workload and difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front schematic diagram of the utility model.

[0019] Figure 2 The utility model Figure 1 Schematic diagram of the upper side.

[0020] Figure 3 The utility model Figure 1 Schematic diagram on the left.

[0021] Figure 4 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 5 It is a schematic diagram of the incomplete installation of the pipeline and the heat exchange plate of the utility model.

[0023] Figure 6 This utility model Figure 5 Enlarged view of part A.

[0024] Figure 7 This utility model Figure 5 Enlarged view of part B.

[0025] Figure 8 It is a schematic diagram of the utility model in which the first wing frame and the second wing frame are separated.

[0026] Figure 9 It is a schematic diagram of the utility model in which the first wing frame and the second wing frame are separated.

[0027] Figure 10 This utility model Figure 4 Enlarged view of part C.

[0028] Numbers shown in the accompanying drawings:

[0029] 1. Tube array; 2. Bend tube; 3. First wing frame; 4. Second wing frame; 5. First fin; 6. Second fin; 7. U-shaped slot; 8. Semicircular ring piece; 9. Rectangular piece; 10. First upper connecting piece; 11. First lower connecting piece; 12. Second upper connecting piece; 13. Second lower connecting piece; 14. First slot; 15. Second slot; 16. Strip plate; 17. Plug column; 18. Press plate. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0031] The heat exchanger shape and heat exchange tubes of this example are still similar to the prior art, and the main improvement lies in the installation of fins and pipes. The main structure includes: a shell and a serpentine pipe, and a heat exchange fin assembly that is easy to quickly disassemble and install.

[0032] The pipeline is fixedly installed inside the shell. The pipeline is a serpentine rotating pipeline, including a column of tubes 1 arranged in parallel from top to bottom. One end of adjacent columns of tubes 1 is connected by a semicircular elbow 2. Adjacent elbows 2 are respectively arranged at both ends of the column of tubes 1. An inlet pipe is provided at the end of the uppermost column of tubes 1 away from the elbow 2, and an outlet pipe is provided at the end of the lowermost column of tubes 1 away from the elbow 2.

[0033] The side wall of the shell is provided with a water inlet reserved opening and a water outlet reserved opening, the water inlet reserved opening is used to seal the water inlet pipe, and the water outlet reserved opening is used to seal the water outlet pipe, so as to complete the sealing inside the shell, and the side wall of the shell is also connected with a cold water joint and a water outlet joint, which are used to manage the cold water for heat exchange inside. Since the shell is a shell of conventional structure, it is not shown in the figure, and the installation structure of the internal pipe and fins is mainly shown.

[0034] The heat exchanger fins are matched with each tube 1, and each group of heat exchanger fins is installed and used corresponding to one tube 1. The heat exchanger fin assembly includes a first wing frame 3 and a second wing frame 4. The structures of the first wing frame 3 and the second wing frame 4 are basically the same, specifically:

[0035] The first wing frame 3 and the second wing frame 4 both include fins that are equidistantly arranged. For the convenience of distinction and description, the fins of the first wing frame 3 are defined as first fins 5 , and the fins of the second wing frame 4 are defined as second fins 6 .

[0036] The fins adopt a horizontal U-shaped structure and have a U-shaped slot 7U on one side in the horizontal direction. The bottom of the U-shaped slot 7U is a semi-circular arc corresponding to the circumferential surface of the tube 1. The U-shaped slots 7U of the first fin 5 and the second fin 6 are arranged in opposite directions. In terms of the specific structure, each fin (including the first fin 5 and the second fin 6) includes an integrally formed semi-circular ring 8 and two rectangular pieces 9. The inner circle of the semi-circular ring 8 corresponds to the diameter of the tube 1 and can be completely attached to the outer circumference of the tube 1. The width of the rectangular piece 9 is the same as the width of the semi-circular ring 8. One side of the two rectangular pieces 9 is respectively connected to both ends of the semi-circular ring 8, jointly forming a U-shaped fin structure and having a U-shaped slot 7U on one side in the horizontal direction. In this structure, the depth of the opening of the semi-circular ring 8 is extended by the two rectangular pieces 9, which is convenient for inserting into the outer circumference of the tube 1 through the U-shaped slot 7U. At the same time, it can also extend in the tangential direction at both ends of the semi-circular ring 8 to achieve cooperation with other components and increase the heat dissipation surface area.

[0037] A first upper connecting piece 10 or a first lower connecting piece 11 is provided between adjacent first fins 5. The bottom side of the first upper connecting piece 10 is fixed on the upper side of the semi-circular ring 8 of the adjacent (first fin 5). The top side of the first lower connecting piece 11 is fixed on the lower side of the semi-circular ring 8 of the adjacent (first fin 5). The first upper connecting piece 10 and the first lower connecting piece 11 are arranged adjacent to each other, so that adjacent first fins 5 are alternately connected into a whole structure through the first upper connecting piece 10 and the first lower connecting piece 11, thereby obtaining an integral first fin frame 3, which can facilitate the removal of all the first fins 5 at one time.

[0038] A second upper connecting piece 12 or a second lower connecting piece 13 is provided between adjacent second fins 6. The bottom side of the second upper connecting piece 12 is fixed on the upper side of the semi-circular ring 8 of the adjacent (second fin 6). The top side of the second lower connecting piece 13 is fixed on the lower side of the semi-circular ring 8 of the adjacent (second fin 6). The second upper connecting piece 12 and the second lower connecting piece 13 are arranged adjacent to each other, so that adjacent second fins 6 are alternately connected into a whole structure through the second upper connecting piece 12 and the second lower connecting piece 13, thereby obtaining an integral second fin frame 4, which can facilitate the removal of all the second fins 6 at one time.

[0039] The first fin frame 3 and the second fin frame 4 are oppositely installed on the peripheral surface of the tube bundle 1. Specifically, the U-shaped slots 7U of the first fins 5 and the second fins 6 are arranged in opposite directions, and the tube bundle 1 is respectively inserted into the bottom of the U-shaped slots 7U, so that the semi-circular arc at the bottom of the U-shaped slots 7U fits the peripheral surface of the tube bundle 1. At the same time, the first fins 5 and the second fins 6 are arranged alternately. Based on the same structure of the first fins 5 and the second fins 6, the first fins 5 and the second fins 6 are arranged alternately and equidistantly. The first fins 5 are located between two second fins 6, and vice versa, the second fins 6 are located between two first fins 5.

[0040] On the bottom side of the first upper connecting piece 10 and the top side of the first lower connecting piece 11, first slots 14 corresponding to the rectangular pieces 9 of the second fins 6 are respectively provided in the middle. On the bottom side of the second upper connecting piece 12 and the top side of the second lower connecting piece 13, second slots 15 corresponding to the outer sides of the rectangular pieces 9 of the first fins 5 are respectively provided in the middle. Based on the alternating arrangement of the first fins 5 and the second fins 6, when the first fin frame 3 and the second fin frame 4 are respectively inserted into the tube bundle 1 on the left and right sides of the tube bundle 1, the rectangular pieces 9 of the first fins 5 are inserted into the second slots 15, and the rectangular pieces 9 of the second fins 6 are inserted into the first slots 14, realizing the rapid positioning of the first fins 5 and the second fins 6.

[0041] Based on the alternately arranged first fins 5 and second fins 6, there are overlapping parts between the first upper connecting piece 10 and the second upper connecting piece 12, and between the first lower connecting piece 11 and the second lower connecting piece 13 respectively.

[0042] On the first upper connecting piece 10, a first upper mounting hole is provided, and on the second upper connecting piece 12, a second upper mounting hole is provided. The first upper mounting hole and the second upper mounting hole overlap coaxially.

[0043] On the first lower connecting piece 11, a first lower mounting hole is provided, and on the second lower connecting piece 13, a second lower mounting hole is provided. The second lower mounting hole and the first lower mounting hole overlap coaxially.

[0044] Based on the above structure, the coaxial mounting holes can be directly tightened and fixed with double-headed bolts, so as to quickly fix the first fin frame 3 and the second fin frame 4 respectively from above and below. After fixing, the first fin frame 3 and the second fin frame 4 are close to each other, and the bottom of the U-shaped slots 7U of the two are in close contact with the peripheral surface of the tube bundle 1 respectively, ensuring heat transfer.

[0045] Since the metal sheet has a certain elasticity and the connection is through adjacent connecting pieces, the overall strength is limited. Therefore, additional connecting pieces can be further added during fixing.

[0046] The connecting piece includes a strip plate 16 extending in the same direction as the length direction of the tube bundle 1. A row of a plurality of insertion posts 17 are equidistantly arranged on the strip plate 16 along its length direction. The spacing between the insertion posts 17 corresponds to the spacing between adjacent first upper mounting holes / first lower mounting holes. The insertion posts 17 can be simultaneously inserted into a plurality of overlapping first upper mounting holes and second upper mounting holes, and simultaneously inserted into a plurality of overlapping second lower mounting holes and first lower mounting holes, so as to quickly insert into a plurality of overlapping mounting holes. Nuts are provided at the ends of some or all of the insertion posts 17 and are threadedly connected thereto.

[0047] It further includes a pressing plate 18. The pressing plate 18 is a long strip plate member arranged in parallel with and corresponding in size to the strip plate 16. Through holes for movably inserting the insertion posts 17 are provided on the pressing plate 18. The number, position and aperture of the through holes correspond to the insertion posts 17 one by one. After the pressing plate 18 is movably inserted with the insertion posts 17, the pressing plate 18 is locked and fixed by nuts.

[0048] During specific installation, the strip plate 16 and the pressing plate 18 are respectively arranged on the outer sides of the connecting pieces (including the first upper connecting piece 10, the first lower connecting piece 11, the second upper connecting piece 12, the second lower connecting piece 13), so that the insertion posts 17 sequentially penetrate through the outer sides of the mounting holes (including the first upper mounting hole, the first lower mounting hole, the second upper mounting hole, the second lower mounting hole). The pressing plate 18 is moved closer to the strip plate 16 by nuts, so as to realize the gathering of the first upper connecting piece 10 and the second upper connecting piece 12 / the first lower connecting piece 11 and the second lower connecting piece 13 through the strip plate 16 and the pressing plate 18, so that the first fin 5 and the second fin 6 are tightly pressed against each other and cross on the peripheral surface of the tube bundle 1, forming an opposing acting force that hugs the tube bundle 1 from both left and right sides.

[0049] The connecting piece is used to respectively fix the upper or lower positions of the first fin frame 3 and the second fin frame 4. The same group of connecting pieces can be fixed with a small number of nuts. By dispersing the pressing force through the pressing plate 18, effective fastening of a plurality of connecting pieces can be achieved.

[0050] With the above structure, without disassembling the pipeline, the first fin frame 3 and the second fin frame 4 can be directly fixed by several nuts. The fins are connected into a whole through the connecting pieces to obtain the first fin frame 3 and the second fin frame 4 with an integral structure. Moreover, with the fins with a U-shaped side opening in the present technology, they cross each other on the left and right sides of the tube bundle 1, so that the first fin frame 3 and the second fin frame 4 are spliced on both sides of the tube bundle 1 at once, forming a plug-in installation mode for the tube bundle 1, and quick positioning is carried out through the self-owned plug-in structure, so that while the installation is efficient, the quality can also be guaranteed.

[0051] When disassembling this heat sink, after loosening several nuts and removing the connecting piece, the entire row of the first fin frames 3 and the second fin frames 4 can be directly separated and removed outward on the left and right sides of the tube bank 1. This one-step operation is very simple and fast, and it is currently the simplest and most labor-saving disassembly structure.

[0052] After removal, it can be conveniently cleaned and maintained. The surface of the tube bank 1 has no obstruction and can be directly cleaned. The fins are all open semi-circular structures, and the gap is doubled, making it easier to clean. At the same time, for damaged parts, replacing half of the heat sink (that is, the first fin frame 3 or the second fin frame 4) can greatly reduce the maintenance cost, reduce the cleaning workload and operation difficulty.

Claims

1. A heat exchanger that is easy to disassemble, characterized in that: It includes a first wing frame and a second wing frame which are arranged opposite to each other on the left and right, the first wing frame includes a plurality of first fins which are arranged equidistantly and connected, the second wing frame includes a plurality of second fins which are arranged equidistantly and connected, the first fin and the second fin are U-shaped pieces of the same shape, and the first fin and the second fin are respectively provided with U-shaped slots on adjacent sides, the bottom of the U-shaped slots is semicircular, and the first fins and the second fins are alternately arranged.

2. The heat exchange plate that is easy to disassemble according to claim 1, characterized in that: The first fin and the second fin are consistent in shape and both include a semicircular ring piece, the two ends of the semicircular ring piece are connected with a rectangular piece integrally formed therewith, the rectangular piece extends along the tangent direction of the two ends of the semicircular ring piece, the rectangular piece is coplanar with the semicircular ring piece, and the inner circle of the semicircular ring piece is the bottom of the U-shaped slot.

3. The heat exchange plate that is easy to disassemble according to claim 2, characterized in that: A first upper connecting piece or a first lower connecting piece is provided between adjacent first fins, the bottom side of the first upper connecting piece is fixed to the upper side of the semicircular ring piece, the top side of the first lower connecting piece is fixed to the lower side of the semicircular ring piece, and the first upper connecting piece and the first lower connecting piece are alternately arranged; A second upper connecting piece or a second lower connecting piece is provided between adjacent second fins, the bottom side of the second upper connecting piece is fixed to the upper side of the semicircular ring piece, the top side of the second lower connecting piece is fixed to the lower side of the semicircular ring piece, and the second upper connecting piece and the second lower connecting piece are alternately arranged.

4. The heat exchange plate that is easy to disassemble according to claim 3, characterized in that: A first slot movably connected to the rectangular piece of the second fin is provided in the center of the bottom side of the first upper connecting piece and the top side of the first lower connecting piece, and a second slot movably connected to the rectangular piece of the first fin is provided in the center of the bottom side of the second upper connecting piece and the top side of the second lower connecting piece.

5. The heat exchange plate that is easy to disassemble according to claim 4, characterized in that: A first upper mounting hole is provided on the first upper connecting plate, and a second upper mounting hole is provided on the second upper connecting plate, wherein the first upper mounting hole and the second upper mounting hole overlap coaxially; A first lower mounting hole is provided on the first lower connecting plate, and a second lower mounting hole is provided on the second lower connecting plate. The second lower mounting hole overlaps coaxially with the first lower mounting hole.

6. The heat exchange plate that is easy to disassemble according to claim 5, characterized in that: It also includes a connecting piece, which is arranged on the upper side and / or the lower side of the heat exchange plate. The connecting piece includes a strip plate and a pressure plate arranged in parallel. The strip plate is provided with a row of multiple plugs at equal intervals along its length direction. The plugs are movably connected with the coaxial first upper mounting hole and the second upper mounting hole. The plugs are movably connected with the coaxial first lower mounting hole and the second lower mounting hole. The pressure plate is provided with through holes corresponding to the plugs, and nuts are threadedly connected to the ends of all or part of the plugs.

7. A heat exchanger, comprising a shell and a pipe installed in the shell, wherein the pipe is a serpentine pipe, and the pipe comprises tubes arranged in parallel from top to bottom, one end of adjacent tubes is connected by an elbow, and the adjacent elbows are respectively arranged at both ends of the tubes, characterized in that: It also includes the heat exchanger according to any one of claims 1 to 6, wherein the first fin frame and the second fin frame are arranged on the left and right sides of the tube array, the bottom of the U-shaped slot of the first fin contacts the side wall of the tube array, and the U-shaped slot of the second fin contacts the side wall of the tube array.

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