Finned tube type heat exchanger with small tube diameter

Abstract

The utility model discloses a thin-tube-diameter finned tube type heat exchanger, which belongs to the field of heat exchangers and comprises a pair of shell transverse plates, a plurality of heat exchange thin tubes are clamped between two shell transverse plate supports, and a plurality of fin bodies are mounted at the outer ends of the heat exchange thin tubes. Electric rotating shafts are fixedly connected to the left sides of the ends, away from each other, of the two shell transverse plates, rotatable thick plates are fixedly connected to the output ends of the two electric rotating shafts, lower grooves are symmetrically formed in the upper side and the lower side of the end, close to the fin body, of each rotatable thick plate, and first micro electric push rods are fixedly connected to the inner side walls of the lower grooves; the output end of the first micro electric push rod is fixedly connected with a second micro electric push rod, the end, close to the fin body, of the displacement strip rod is fixedly connected with a plurality of friction soft columns, the inner ends of the friction soft columns are fixedly connected with air bag liners, and the friction soft columns can be matched with the air bag liners capable of expanding and deforming. And impurities outside the fin body and the heat exchange thin tube can be effectively removed.

Description

Technical Field

[0001] The utility model relates to the field of heat exchangers, and more specifically to a fin-tube heat exchanger with a small tube diameter. Background Art

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

[0003] When the existing narrow-diameter fin-tube heat exchanger comes into contact with the external flue gas during operation, the particulate matter in the flue gas will adhere to the outside of the pipe and the fins, affecting the heat exchange efficiency of the equipment. The manual wiping method is time-consuming and labor-intensive, and inefficient. In addition, the gaps in the narrow-diameter fin-tube heat exchanger are small, which easily leads to dead corners for cleaning. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a thin-diameter fin-tube heat exchanger, which can engage the friction column into the gap groove between the corresponding two fin bodies, and at the same time, an expandable and deformable airbag liner can be arranged in the friction column, so that impurities in the fin body and the heat exchange thin tube can be effectively removed.

[0006] Technical Solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A thin-tube fin-tube heat exchanger comprises a pair of shell cross plates, a plurality of heat-exchange thin tubes are clamped between two shell cross plate brackets, a plurality of fin bodies are installed on the outer ends of the heat-exchange thin tubes, an electric shaft is fixedly connected to the left side of the ends of the two shell cross plates away from each other, a rotatable thick plate is fixedly connected to the output ends of the two electric shafts, lower grooves are symmetrically provided on the upper and lower sides of the end of the rotatable thick plate close to the fin body, a first micro electric push rod is fixedly connected to the inner side wall of the lower groove, a second micro electric push rod is fixedly connected to the output end of the first micro electric push rod, the second micro electric push rod cooperates with a displacement bar, a plurality of friction soft columns are fixedly connected to the end of the displacement bar close to the fin body, an air inlet is fixedly connected to the rear side of the displacement bar, and an airbag liner is fixedly connected to the inner end of the friction soft column.

[0009] Furthermore, a one-way solenoid valve is fixedly connected between the airbag liner and the displacement bar, and the one-way solenoid valve is communicated with the air inlet.

[0010] Furthermore, the air inlet is externally connected to a pump, and inner magnetic layer side slots are symmetrically provided on the left and right sides of the displacement bar.

[0011] Furthermore, an output end of the second micro electric push rod is fixedly connected with an electromagnetic block, and the electromagnetic block is magnetically connected to the side slot of the inner magnetic layer.

[0012] Furthermore, a disposable electrostatic dust-absorbing cloth is attached to the outer end of the friction soft column, and a clamping plate is clamped at one end of the displacement bar close to the fin body.

[0013] Furthermore, a plurality of openings are formed at the outer end of the clamping plate, and the plurality of openings penetrate the corresponding friction soft columns.

[0014] Furthermore, the disposable electrostatic dust-absorbing cloth is in contact with the fin body and the heat exchange capillary tube. Beneficial Effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) In this scheme, the friction column is engaged with the pore groove between the two corresponding fin bodies, and the impurities attached to the outer wall of the fin body and the heat exchange tube are wiped off by friction force, which is beneficial to ensure the heat absorption efficiency of the fin body. At the same time, an expandable and deformable airbag liner can be set in the friction column. The airbag liner can be expanded by an external pump through the air inlet, so that it can be more closely contacted with the outer wall of the fin body and the heat exchange tube, thereby improving the efficiency of removing impurities from the fin body and the heat exchange tube.

[0017] (2) While wiping, place a disposable electrostatic dust-absorbing cloth outside the friction soft column and clamp it to the outside of the displacement bar through the clamping plate. Use the disposable electrostatic dust-absorbing cloth to absorb impurities and dust. Replace it after use to ensure wiping efficiency.

[0018] (3) When the second micro electric push rod is connected to the displacement bar, the slot on the inner magnetic layer side can be energized by using an external control terminal so that it can be magnetically connected to the slot on the inner magnetic layer side, making the displacement bar more stable during the displacement of the fin body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the axial structure of the tubular heat exchanger of the utility model;

[0020] Figure 2 This is a schematic diagram of the top view of the displacement bar structure of the utility model;

[0021] Figure 3 It is a side view structural diagram of the displacement bar of the utility model;

[0022] Figure 4 It is a schematic diagram of the displacement state structure of the displacement bar of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Horizontal plate of the outer shell; 2. Fin body; 3. Heat exchange tube; 4. Electric shaft; 5. Rotatable thick plate; 6. Displacement bar; 7. Air inlet; 8. One-way solenoid valve; 9. Solenoid block; 10. Airbag liner; 11. Friction soft column; 12. Disposable electrostatic dust-absorbing cloth; 13. Clamping plate; 14. Opening; 15. Lower groove; 16. First micro electric push rod; 17. Side slot of inner magnetic layer; 18. Second micro electric push rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example:

[0029] See also Figure 1-4The thin-tube fin-tube heat exchanger comprises a pair of outer shell cross plates 1, a plurality of heat exchange thin tubes 3 are clamped between the brackets of the two outer shell cross plates 1, a plurality of fin bodies 2 are installed on the outer ends of the heat exchange thin tubes 3, an electric shaft 4 is fixedly connected to the left side of the ends of the two outer shell cross plates 1 away from each other, a rotatable thick plate 5 is fixedly connected to the output ends of the two electric shafts 4, and lower grooves 15 are symmetrically provided on the upper and lower sides of the end of the rotatable thick plate 5 close to the fin body 2, a first micro electric push rod 16 is fixedly connected to the inner side wall of the lower groove 15, a second micro electric push rod 18 is fixedly connected to the output end of the first micro electric push rod 16, and the second micro electric push rod 18 cooperates with a displacement bar 6, a plurality of friction soft columns 11 are fixedly connected to the end of the displacement bar 6 close to the fin body 2, an air inlet 7 is fixedly connected to the rear side of the displacement bar 6, and an airbag liner 10 is fixedly connected to the inner end of the friction soft column 11.

[0030] See also Figure 1-2 4. A one-way electromagnetic valve 8 is fixedly connected between the airbag liner 10 and the displacement bar 6. The one-way electromagnetic valve 8 is connected to the air inlet 7. The air inlet 7 is externally connected to a pump. The left and right sides of the displacement bar 6 are symmetrically provided with inner magnetic layer side slots 17. The output end of the second micro electric push rod 18 is fixedly connected to an electromagnetic block 9. The electromagnetic block 9 is magnetically connected to the inner magnetic layer side slot 17. When the second micro electric push rod 18 is connected to the displacement bar 6, the inner magnetic layer side slot 17 can be energized by using an external control terminal to make it magnetically connected to the inner magnetic layer side slot 17, so that the displacement bar 6 is more stable during the external displacement of the fin body 2.

[0031] See also Figure 1-2 The outer end of the friction soft column 11 is attached with a disposable electrostatic dust-absorbing cloth 12, and the end of the displacement bar 6 close to the fin body 2 is clamped with a clamping plate 13. The outer end of the clamping plate 13 is provided with a plurality of openings 14, and the plurality of openings 14 penetrate the corresponding friction soft column 11. The disposable electrostatic dust-absorbing cloth 12 is in contact with the fin body 2 and the heat exchange tube 3. While wiping, the disposable electrostatic dust-absorbing cloth 12 is placed outside the friction soft column 11 and is clamped to the outside of the displacement bar 6 by the clamping plate 13. The disposable electrostatic dust-absorbing cloth 12 is used to absorb impurities and dust. It can be replaced once used, which is beneficial to ensure the wiping efficiency.

[0032] See also Figure 1-4In this solution, a rotatable thick plate 5 that cooperates with multiple fin bodies 2 and heat exchange thin tubes 3 is arranged on the side of the shell horizontal plate 1. The rotatable thick plate 5 can be used to rotate the electric shaft 4 to the upper and lower sides of the fin body 2 in sequence, and the two first micro electric push rods 16 are lifted in sequence. After the second micro electric push rod 18 is extended, it is engaged with the displacement bar 6 to displace the displacement bar 6, and its end surface friction soft column 11 is engaged with the pore groove between the corresponding two fin bodies 2, and the impurities attached to the outer wall of the fin body 2 and the heat exchange thin tube 3 are wiped off by friction. In order to ensure the heat absorption efficiency of the fin body 2, an expandable and deformable airbag liner 10 can be arranged in the friction soft column 11 while wiping. The airbag liner 10 can be expanded by an external pump through the air inlet 7 to make it more closely contact with the outer wall of the fin body 2 and the heat exchange tube 3, effectively improve the friction between the friction soft column 11 and the corresponding wall surface, and allow it to extend to the gap in the opposite corner, thereby improving the removal efficiency of impurities in the fin body 2 and the heat exchange tube 3, which is beneficial to ensure the heat exchange efficiency of the fin body 2 and the heat exchange tube 3.

[0033] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A narrow diameter fin-tube heat exchanger, comprising a pair of shell transverse plates (1), characterized in that: A plurality of heat exchange thin tubes (3) are clamped between the two housing horizontal plates (1) brackets, and a plurality of fin bodies (2) are installed at the outer ends of the heat exchange thin tubes (3). An electric shaft (4) is fixedly connected to the left side of the ends of the two housing horizontal plates (1) away from each other, and the output ends of the two electric shafts (4) are fixedly connected to a rotatable thick plate (5). The rotatable thick plate (5) is symmetrically provided with lower grooves (15) on the upper and lower sides of one end close to the fin body (2). A first micro electric push rod (16) is fixedly connected to the inner side wall of the lower groove (15), and a second micro electric push rod (18) is fixedly connected to the output end of the first micro electric push rod (16). The second micro electric push rod (18) cooperates with a displacement bar (6), and a plurality of friction soft columns (11) are fixedly connected to one end of the displacement bar (6) close to the fin body (2). An air inlet (7) is fixedly connected to the rear side of the displacement bar (6), and an airbag liner (10) is fixedly connected to the inner end of the friction soft column (11).

2. The narrow-diameter fin-tube heat exchanger according to claim 1, characterized in that: A one-way solenoid valve (8) is fixedly connected between the airbag liner (10) and the displacement bar (6), and the one-way solenoid valve (8) is in communication with the air inlet (7).

3. The narrow-diameter fin-tube heat exchanger according to claim 1, characterized in that: The air inlet (7) is externally connected to a pump, and inner magnetic layer side slots (17) are symmetrically provided on the left and right sides of the displacement bar (6).

4. The narrow-diameter fin-tube heat exchanger according to claim 3, characterized in that: The output end of the second micro electric push rod (18) is fixedly connected to an electromagnetic block (9), and the electromagnetic block (9) is magnetically connected to the inner magnetic layer side slot (17).

5. The narrow-diameter fin-tube heat exchanger according to claim 1, characterized in that: The outer end of the friction soft column (11) is attached with a disposable electrostatic dust-absorbing cloth (12), and the end of the displacement bar (6) close to the fin body (2) is engaged with a clamping plate (13).

6. The narrow-diameter fin-tube heat exchanger according to claim 5, characterized in that: The outer end of the clamping plate (13) is provided with a plurality of openings (14), and the plurality of openings (14) penetrate corresponding friction soft columns (11).

7. The narrow-diameter fin-tube heat exchanger according to claim 5, characterized in that: The disposable electrostatic dust-absorbing cloth (12) is in contact with the fin body (2) and the heat exchange capillary tube (3).

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