Heat exchange structure and furnace heat exchanger

Abstract

The present invention relates to the technical field of heat exchangers, and specifically to a heat exchange structure, comprising: a heat exchange tube, the surface of the heat exchange tube is provided with a sphere and a fin, the surface of the heat exchange tube is provided with a protective shell, and the protective shell passes through the surface of the baffle, and the baffle is an existing structure; a limit plate, which is provided on the surface of the protective shell, and the surface of the protective shell is provided with a connecting block, and the surface of the connecting block is provided with a clamping block; a limit block, which is provided on the surface of the clamping block, and the limit block is located in the limiting hole, and two groups of connecting blocks are provided, and the limiting hole is located on the surface of the remaining group of connecting blocks; the beneficial effects are: in the heat exchange structure and furnace heat exchanger proposed by the present invention, the sphere increases the fluid in the heat exchange tube, so that the heat exchange area of ​​the heat exchanger is larger when in use, and the heat exchange efficiency is improved; the protective shell effectively reduces the gap between the heat exchange tube and the tube hole. Even if the tube bundle vibrates, under the action of the protective shell, the damage of the tube hole on the baffle surface to the surface of the heat exchange tube is effectively reduced, thereby protecting the heat exchange tube.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, in particular to a heat exchange structure and a furnace heat exchanger. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are widely used. A heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, so that the fluid temperature reaches the specified indicators of the process to meet the needs of process conditions. It is also one of the main equipment for improving energy utilization.

[0003] Typically, the heat exchange structure in a furnace heat exchanger includes heat exchange tubes. Existing small-diameter heat exchange tubes are widely used due to their high heat exchange efficiency, small size of the entire heat exchanger, and relatively low cost.

[0004] However, the wall thickness of small-diameter heat exchange tubes is relatively thin. When steel baffles are used, there is a gap between the heat exchange tubes and the baffle holes. Therefore, due to the vibration of the tube bundle, the tube holes on the steel baffles will cause damage to the surface of the heat exchange tubes in contact with the tube holes. Summary of the Invention

[0005] The object of the present invention is to provide a heat exchange structure and a furnace heat exchanger to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a heat exchange structure, the heat exchange structure comprising:

[0007] Heat exchange tubes, the surface of which is provided with spheres and fins, the surface of which is provided with a protective shell, and the protective shell passes through the surface of the baffle, and the baffle is an existing structure;

[0008] A limiting plate is provided on the surface of the protective shell, a connecting block is provided on the surface of the protective shell, and a clamping block is provided on the surface of the connecting block;

[0009] The limiting block is arranged on the surface of the clamping block and is located in the limiting hole. Two groups of connecting blocks are provided, and the limiting hole is located on the surface of the remaining group of connecting blocks.

[0010] Preferably, a circular hole is opened on the surface of the sphere, which is connected to the heat exchange tube, and multiple groups of spheres are provided, one group of spheres includes two spheres, and the two spheres are symmetrically distributed about the axial center of the heat exchange tube. Multiple groups of spheres are evenly distributed on the surface of the heat exchange tube, and the spheres are set to the same material as the heat exchange tube.

[0011] Preferably, multiple groups of fins are provided, and the multiple groups of fins are evenly distributed on the surface of the heat exchange tube, and the surface of the remaining group of connecting blocks is provided with limiting holes, and the limiting holes are connected with the connecting holes.

[0012] Preferably, the protective shell is an arc-shaped plate structure, the protective shell is in contact with the outer annular surface of the heat exchange tube, the surface of the baffle is provided with a tube hole, and the protective shell is located in the tube hole.

[0013] Preferably, a placement groove is provided on the surface of the protective shell, and the placement groove has a square groove structure. A top holding plate is provided on the surface of the placement groove, and the top holding plate has an arc-shaped plate structure. A rotating rod is provided on the surface of the placement groove for rotationally connecting with the top holding plate. There are two groups of placement grooves, and the two groups of placement grooves are symmetrically distributed about the axial center of the heat exchange tube. Damping blocks are provided on the surface of the protective shell that contacts the heat exchange tube. The damping blocks are provided on the surface of the protective shell, and multiple groups of damping blocks are provided, and the multiple groups of damping blocks are evenly distributed.

[0014] Preferably, an elastic sheet is provided between the surface of the placement groove and the surface of the top holding plate, and the elastic sheet is a "Z"-shaped plate structure.

[0015] Preferably, the limiting plate is fixed on the surface of the top holding plate, the limiting plate is an arc-shaped plate structure, and a guide plate is provided on the surface of the limiting plate, the guide plate is an arc-shaped plate structure with a quadrilateral cross-section.

[0016] Preferably, a movable groove is provided on the surface of the block, a guide groove is provided on the surface of the movable groove, a limit block is provided on the surface of the movable groove, the movable plate is located in the guide groove, and the movable plate is provided on the surface of the limit block.

[0017] Preferably, a support spring is provided between the surface of the movable groove and the surface of the limiting block, and two groups of guide grooves are provided, and the two groups of guide grooves are symmetrically distributed about the center of the movable groove.

[0018] A furnace heat exchanger comprises the heat exchange structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention proposes a heat exchange structure in which the spheres increase the amount of fluid in the heat exchange tubes, thereby increasing the heat exchange area of ​​the heat exchanger during use and improving the heat exchange efficiency; the protective shell effectively reduces the gap between the heat exchange tubes and the tube holes. Even if the tube bundle vibrates, the protective shell effectively reduces the damage to the surface of the heat exchange tubes caused by the tube holes on the baffle surface, thereby protecting the heat exchange tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2This is a schematic diagram of the structure when the protective shell of the present invention is in contact with the heat exchange tube;

[0023] Figure 3 This is a schematic diagram of the protective shell structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the remaining protective shell structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the card block structure of the present invention;

[0026] Figure 6 Schematic diagram of the detailed structure of the sphere of the present invention.

[0027] In the figure: heat exchange tube 1, sphere 2, fin 3, circular hole 4, protective shell 5, placement groove 6, top holding plate 7, elastic sheet 8, limit plate 9, guide plate 10, connecting block 11, limit hole 12, connecting hole 13, clamping block 14, movable groove 15, guide groove 16, support spring 17, limit block 18, movable plate 19, deflector 20, tube hole 21, damping block 22. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1 to 6 The present invention provides a technical solution: a heat exchange structure, the heat exchange structure and the furnace heat exchanger include: a heat exchange tube 1, a sphere 2 and a fin 3 are provided on the surface of the heat exchange tube 1, a protective shell 5 is provided on the surface of the heat exchange tube 1, and the protective shell 5 passes through the surface of the baffle 20, the baffle 20 is an existing structure, a circular hole 4 is opened on the surface of the sphere 2, the circular hole 4 is connected with the heat exchange tube 1, and the spheres 2 are provided in multiple groups, one group of spheres 2 includes two spheres 2, the two spheres 2 are symmetrically distributed about the axial center of the heat exchange tube 1, the multiple groups of spheres 2 are evenly distributed on the surface of the heat exchange tube 1, and the spheres 2 are set to the same material as the heat exchange tube 1, the fins 3 are provided in multiple groups, and the multiple groups of fins 3 are evenly distributed on the surface of the heat exchange tube 1, and the surface of the protective shell 5 in contact with the heat exchange tube 1 is provided with a damping block 22, the damping block 22 is provided on the surface of the protective shell 5, and the damping block 22 is provided in multiple groups, and the multiple groups of damping blocks 22 are evenly distributed;

[0030] The limiting plate 9 is provided on the surface of the protective shell 5, and the surface of the protective shell 5 is provided with a connecting block 11, and the surface of the connecting block 11 is provided with a clamping block 14. The protective shell 5 is an arc-shaped plate structure. The protective shell 5 contacts the outer ring surface of the heat exchange tube 1. The surface of the baffle 20 is provided with a tube hole 21, and the protective shell 5 is located in the tube hole 21. The surface of the protective shell 5 is provided with a placement groove 6, and the placement groove 6 is a square groove structure. The surface of the placement groove 6 is provided with a top holding plate 7, and the top holding plate 7 is an arc-shaped plate structure. Structure, and the surface of the placement groove 6 is provided with a rotating rod and is rotatably connected to the top holding plate 7. There are two groups of placement grooves 6, and the two groups of placement grooves 6 are symmetrically distributed about the axial center of the heat exchange tube 1. An elastic sheet 8 is provided between the surface of the placement groove 6 and the surface of the top holding plate 7. The elastic sheet 8 has a "Z"-shaped plate structure. The limiting plate 9 is fixed to the surface of the top holding plate 7. The limiting plate 9 has an arc-shaped plate structure. The surface of the limiting plate 9 is provided with a guide plate 10. The guide plate 10 is an arc-shaped plate structure with a quadrilateral cross section.

[0031] The limit block 18 is provided on the surface of the card block 14, and the limit block 18 is located in the limit hole 12. Two groups of connecting blocks 11 are provided, and the limit hole 12 is located on the surface of the remaining group of connecting blocks 11. A movable groove 15 is provided on the surface of the card block 14, and a guide groove 16 is provided on the surface of the movable groove 15. The surface of the movable groove 15 is provided with a limit block 18, and the movable plate 19 is located in the guide groove 16. The movable plate 19 is provided on the surface of the limit block 18. A support spring 17 is provided between the surface of the movable groove 15 and the surface of the limit block 18, and two groups of guide grooves 16 are provided. The two groups of guide grooves 16 are symmetrically distributed about the center of the movable groove 15. A limit hole 12 is provided on the surface of the remaining group of connecting blocks 11, and the limit hole 12 is connected with the connecting hole 13.

[0032] Working principle: In actual use, refer to Figures 1 to 6 As shown, first, a sphere 2 is arranged on the surface of the heat exchange tube 1, and a circular hole 4 on the surface of the sphere 2 is connected to the heat exchange tube 1. The fluid in the heat exchange tube 1 is increased, so that the heat exchange area of ​​the heat exchanger is larger during use, thereby improving the heat exchange efficiency; the fins 2 arranged on the surface of the heat exchange tube 1 are more conducive to the heat dissipation of the heat exchange tube 1;

[0033] Secondly, place the two groups of protective shells 5 on the surface where the heat exchange tube 1 contacts the tube hole 21, and push the connecting block 11 toward each other until the limit block 18 passes through the limit hole 12 and is located in the connecting hole 13. Since the surface of the limit block 18 is provided with an arc surface, it is convenient for the limit block 18 to move into the limit hole 12. Under the action of the support spring 17, one end of the limit block 18 is located in the connecting hole 13, and the two groups of protective shells 5 can be fixed on the surface of the heat exchange tube 1. In addition, a damping block 22 is provided on the surface where the protective shell 5 contacts the heat exchange tube 1, which is more conducive to the fixation of the protective shell 5, so that the protective shell 5 will not be easily displaced from the surface of the heat exchange tube 1. When the protective shell 5 needs to be removed, the limit block 18 is pushed into the movable groove 15 to separate and remove the two groups of protective shells 5.

[0034] Finally, when the heat exchange tube 1 uses the baffle 20, one end of the guide plate 10 is moved toward the tube hole 21. Under the action of the elastic sheet 8, when the guide plate 10 moves into the tube hole 21, the guide plates 10 are squeezed toward each other until the guide plate 10 passes through the tube hole 21. The connecting block 11 and the limit plate 9 are respectively located at both ends of the tube hole 21. Therefore, the surface of the heat exchange tube 1 is not in direct contact with the surface of the tube hole 21, and the protective shell 5 effectively reduces the gap between the heat exchange tube 1 and the tube hole 21. Even if the tube bundle vibrates, under the action of the protective shell 5, the damage of the tube hole 21 on the surface of the baffle 20 to the surface of the heat exchange tube 1 is effectively reduced, thereby protecting the heat exchange tube 1.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchange structure, characterized in that: The heat exchange structure comprises: A heat exchange tube (1) is provided with a sphere (2) and a fin (3) on the surface of the heat exchange tube (1); a protective shell (5) is provided on the surface of the heat exchange tube (1), and the protective shell (5) passes through the surface of the baffle (20); the baffle (20) is an existing structure; the protective shell (5) is an arc-shaped plate structure, the protective shell (5) contacts the outer annular surface of the heat exchange tube (1), the surface of the baffle (20) is provided with a tube hole (21), and the protective shell (5) is located in the tube hole (21); the surface of the protective shell (5) is provided with a placement groove (6), and the placement groove (6) is A square trough structure, a top holding plate (7) is provided on the surface of the placement groove (6), the top holding plate (7) is an arc-shaped plate structure, and a rotating rod is provided on the surface of the placement groove (6) to be rotatably connected to the top holding plate (7), two groups of placement grooves (6) are provided, and the two groups of placement grooves (6) are symmetrically distributed about the axial center of the heat exchange tube (1), and a damping block (22) is provided on the surface of the protective shell (5) in contact with the heat exchange tube (1), and the damping block (22) is provided on the surface of the protective shell (5), and multiple groups of damping blocks (22) are provided, and the multiple groups of damping blocks (22) are evenly distributed; A limiting plate (9) is provided on the surface of the protective shell (5), and a connecting block (11) is provided on the surface of the protective shell (5), and a clamping block (14) is provided on the surface of the connecting block (11); The limiting block (18) is provided on the surface of the clamping block (14), and the limiting block (18) is located in the limiting hole (12). Two groups of connecting blocks (11) are provided, and the limiting hole (12) is located on the surface of the remaining group of connecting blocks (11).

2. A heat exchange structure according to claim 1, characterized in that: A circular hole (4) is provided on the surface of the sphere (2), the circular hole (4) is connected to the heat exchange tube (1), and the spheres (2) are provided in multiple groups, one group of spheres (2) includes two spheres (2), the two spheres (2) are symmetrically distributed about the axial center of the heat exchange tube (1), and the multiple groups of spheres (2) are evenly distributed on the surface of the heat exchange tube (1), and the spheres (2) are provided with the same material as the heat exchange tube (1).

3. A heat exchange structure according to claim 1, characterized in that: The fins (3) are provided in multiple groups, and the multiple groups of fins (3) are evenly distributed on the surface of the heat exchange tube (1), and the surface of the remaining group of connecting blocks (11) is provided with a limiting hole (12), and the limiting hole (12) is connected to the connecting hole (13).

4. A heat exchange structure according to claim 1, characterized in that: An elastic sheet (8) is provided between the surface of the placement groove (6) and the surface of the top holding plate (7), and the elastic sheet (8) is a "Z"-shaped plate structure.

5. The heat exchange structure according to claim 1, characterized in that: The limiting plate (9) is fixed on the surface of the top holding plate (7), and the limiting plate (9) is an arc-shaped plate structure. A guide plate (10) is provided on the surface of the limiting plate (9), and the guide plate (10) is an arc-shaped plate structure with a quadrilateral cross section.

6. The heat exchange structure according to claim 1, characterized in that: A movable groove (15) is provided on the surface of the clamping block (14), a guide groove (16) is provided on the surface of the movable groove (15), a limit block (18) is provided on the surface of the movable groove (15), a movable plate (19) is located in the guide groove (16), and the movable plate (19) is provided on the surface of the limit block (18).

7. A heat exchange structure according to claim 6, characterized in that: A support spring (17) is provided between the surface of the movable groove (15) and the surface of the limit block (18), and two groups of guide grooves (16) are provided. The two groups of guide grooves (16) are symmetrically distributed about the center of the movable groove (15).

8. A furnace heat exchanger, characterized in that: The heat exchange structure comprises the heat exchange structure described in any one of claims 1 to 7.

Images