A new heat pipe structure of a drying furnace of a hot-dip galvanizing unit

Abstract

The utility model belongs to heat exchange pipeline field, concretely speaking is a kind of novel drying furnace heat exchange pipeline structure of hot dip galvanizing unit, including outer heat exchange pipe, the inner wall of outer heat exchange pipe is equipped with several clamping grooves, the inside of outer heat exchange pipe is provided with inner heat exchange pipe, the outer wall of inner heat exchange pipe is fixedly installed with several heat exchange clamping plates, the number position of heat exchange clamping plate is compatible with clamping groove, the both sides of outer heat exchange pipe are fixedly installed with flange, the outside of flange is fixedly connected with first end cover and second end cover respectively by thread. Through the structural design of inner heat exchange pipe, clamping groove, inner heat exchange pipe, heat exchange clamping plate, and through the mutual cooperation between structure, the function of double-stage heat exchange is realized, the outside heat exchange medium can heat the inside of drying box, utilize internal heat exchange medium to heat external heat exchange medium, to increase effective heat exchange area, and further increase heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange pipeline technology, specifically a new type of heat exchange pipeline structure for a drying furnace in a hot-dip galvanizing unit. Background Technology

[0002] Hot-dip galvanizing is a widely used metal corrosion protection technology that improves the corrosion resistance and service life of metals. During the hot-dip galvanizing process, the workpiece needs to be dried before entering the molten zinc to remove surface moisture and impurities, preventing zinc splattering during galvanizing, which would affect galvanizing quality and production safety.

[0003] Currently, the heat exchange tubes of commonly used drying ovens on the market usually adopt single-layer straight tubes or U-shaped tubes for heat exchange. Since the heating medium inside the heat exchange tube first completes the heat exchange with the medium inside the drying oven, after the heat exchange is completed, the heating medium at the front end of the heat exchange tube may not have completed the return flow. As a result, the stagnant medium cannot participate in continuous heat exchange, which reduces the effective heat exchange area, thereby reducing the heat exchange efficiency inside the drying oven and causing uneven heat exchange inside the drying oven.

[0004] Therefore, a new type of heat exchange pipe structure for the drying furnace of a hot-dip galvanizing unit is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, such as the low heat exchange efficiency and uneven heat exchange of traditional heat exchange pipes, this utility model proposes a new heat exchange pipe structure for the drying furnace of a hot-dip galvanizing unit.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a new type of heat exchange pipe structure for a drying furnace of a hot-dip galvanizing unit, including an outer heat exchange pipe, the inner wall of which is provided with a number of slots, an inner heat exchange pipe is provided inside the outer heat exchange pipe, and a number of heat exchange plates are fixedly installed on the outer wall of the inner heat exchange pipe. The number and position of the heat exchange plates are adapted to the slots. Flanges are fixedly installed on both sides of the outer heat exchange pipe, and a first end cap and a second end cap are respectively fixedly connected to the outer side of the flanges by threads.

[0007] Preferably, an L-shaped inlet tube is fixedly installed inside both the first end cap and the second end cap, with one end of the L-shaped inlet tube extending through to the outside of the first end cap and the second end cap.

[0008] Preferably, the end of the L-shaped inlet pipe is fixedly connected to a first inlet pipe and a first outlet pipe by bolts. The first inlet pipe and the first outlet pipe are located at both ends of the inner heat exchange pipe and are deployed in opposite directions.

[0009] Preferably, the other side of the first end cap and the second end cap are respectively fixedly connected with a second inlet pipe and a second outlet pipe by bolts. The second inlet pipe and the second outlet pipe are located at both ends of the external heat exchange tube and are deployed in opposite directions.

[0010] Preferably, a sealing extension tube is fixedly installed at one end of the L-shaped inlet pipe near the inner heat exchange tube. The sealing extension tube is embedded in the inner heat exchange tube, and a chamfer is provided on the outer side of the end of the sealing extension tube.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model achieves a two-stage heat exchange function through the structural design of the internal heat exchange tube, the slot, the internal heat exchange tube, and the heat exchange plate, and through the cooperation between the structures. This allows the external heat exchange medium to heat the inside of the drying box, and the internal heat exchange medium to heat the external heat exchange medium, thereby increasing the effective heat exchange area and thus increasing the heat exchange efficiency, solving the problem of low heat exchange efficiency of traditional heat exchange pipes.

[0013] 2. This utility model uses the second inlet pipe and the second outlet pipe to cooperate with each other, which facilitates the function of planning the flow path of the heat exchange medium on the outside with the external heat exchange tube. This ensures the smoothness of the flow of the heat exchange medium on the outside. At the same time, it cooperates with the first inlet pipe to achieve the function of mutual counterflow of the internal and external heat exchange media, thereby ensuring the uniformity of heating inside the drying box and solving the problem of uneven heat exchange. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial schematic diagram of the external heat exchanger tube structure of this utility model;

[0017] Figure 3 This is a partial cross-sectional view of the first end cap structure of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the external heat exchanger tube and the internal heat exchanger tube of this utility model.

[0019] In the diagram: 1. External heat exchanger tube; 2. Slot; 3. Internal heat exchanger tube; 4. Heat exchanger plate; 5. Flange; 6. First end cap; 7. Second end cap; 8. L-shaped inlet pipe; 9. First inlet pipe; 10. First outlet pipe; 11. Second inlet pipe; 12. Second outlet pipe; 13. Sealing extension pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] This application discloses a novel heat exchange pipe structure for a drying furnace in a hot-dip galvanizing unit, comprising an external heat exchange pipe 1, with several slots 2 formed on the inner wall of the external heat exchange pipe 1, an internal heat exchange pipe 3 disposed inside the external heat exchange pipe 1, and several heat exchange plates 4 fixedly installed on the outer wall of the internal heat exchange pipe 3, the number and position of the heat exchange plates 4 being adapted to the slots 2, and flanges 5 fixedly installed on both sides of the external heat exchange pipe 1, with a first end cap 6 and a second end cap 7 respectively fixedly connected to the outer side of the flanges 5 by threads.

[0023] Reference Figure 1 , Figure 2 , Figure 4 Through the structural design of the inner heat exchange tube 3, the slot 2, the inner heat exchange tube 3, and the heat exchange plate 4, and through the cooperation between the structures, the function of two-stage heat exchange is realized. Thus, the outer heat exchange medium can heat the inside of the drying box, and the inner heat exchange medium can heat the outer heat exchange medium, thereby increasing the effective heat exchange area and thus increasing the heat exchange efficiency.

[0024] An L-shaped inlet tube 8 is fixedly installed inside both the first end cap 6 and the second end cap 7, with one end of the L-shaped inlet tube 8 extending through to the outside of the first end cap 6 and the second end cap 7.

[0025] Reference Figure 3 The L-shaped inlet pipe 8 facilitates the introduction and extraction of the internal heat exchange medium, while also achieving the purpose of isolating the internal heat exchange medium from the external heat exchange medium, so as to achieve the function of counter-flow between the internal and external heat exchange media in the future.

[0026] The L-shaped inlet pipe 8 is fixedly connected to the first inlet pipe 9 and the first outlet pipe 10 by bolts. The first inlet pipe 9 and the first outlet pipe 10 are located at both ends of the inner heat exchange pipe 3 and are deployed in opposite directions.

[0027] Reference Figure 1 and Figure 2 The cooperation between the first inlet pipe 9 and the first outlet pipe 10 facilitates the function of planning the internal heat exchange medium flow path in conjunction with the internal heat exchange tube 3, thereby ensuring the stability of the internal heat exchange medium flow process and facilitating the subsequent heating of the external heat exchange medium.

[0028] The second inlet pipe 11 and the second outlet pipe 12 are respectively fixedly connected to the other side of the first end cap 6 and the second end cap 7 by bolts. The second inlet pipe 11 and the second outlet pipe 12 are located at both ends of the external heat exchange pipe 1 and are deployed in opposite directions.

[0029] Reference Figure 1 The second inlet pipe 11 and the second outlet pipe 12 work together to facilitate the planning of the flow path of the heat exchange medium on the outside with the external heat exchange pipe 1. This ensures the smoothness of the flow of the heat exchange medium on the outside. At the same time, the first inlet pipe 9 achieves the function of mutual counterflow of the internal and external heat exchange media, thereby ensuring the uniformity of heating inside the drying box and solving the problem of uneven heat exchange.

[0030] A sealing extension tube 13 is fixedly installed at one end of the L-shaped inlet pipe 8 near the inner heat exchange tube 3. The sealing extension tube 13 is embedded in the inner heat exchange tube 3, and a chamfer is provided on the outer side of the end of the sealing extension tube 13.

[0031] Reference Figure 4 The sealing extension tube 13 facilitates the sealing of the connection between the L-shaped inlet tube 8 and the inner heat exchange tube 3, thereby preventing leakage between the inner and outer heat exchange media. At the same time, it can also support the inner heat exchange tube 3, thereby ensuring the stability of the inner heat exchange tube 3 during operation.

[0032] Working principle: When using this device, the high-temperature heating medium enters the gap between the outer heat exchange tube 1 and the inner heat exchange tube 3 through the second inlet pipe 11. After exchanging heat with the air inside the drying oven and the workpiece to be dried through the outer heat exchange tube 1, it flows back through the second outlet pipe 12. At the same time, another high-temperature heating medium enters the inner heat exchange tube 3 in the opposite direction from the heat exchange medium in the outer heat exchange tube 1 through the first inlet pipe 9. It flows along the inner heat exchange tube 3 and contacts the outer heat exchange medium through the inner heat exchange tube 3, heating the outer heat exchange medium. It flows back through the first outlet pipe 10. The two media are arranged in countercurrents through the tube walls of the double-layer heat exchange tubes to achieve full heat transfer and exchange. The high-temperature media in the inner heat exchange tube 3 and the outer heat exchange tube 1 transfer heat to the outer wall of the pipe through the tube wall by heat conduction, and then dissipate the heat into the drying oven by countercurrent flow to heat the air in the oven, thereby drying the hot-dip galvanized workpiece.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A novel heat exchange pipe structure for a drying furnace in a hot-dip galvanizing unit, characterized in that: It includes an external heat exchange tube (1); the inner wall of the external heat exchange tube (1) is provided with several slots (2); an internal heat exchange tube (3) is provided inside the external heat exchange tube (1); several heat exchange plates (4) are fixedly installed on the outer wall of the internal heat exchange tube (3); the number and position of the heat exchange plates (4) are adapted to the slots (2); flanges (5) are fixedly installed on both sides of the external heat exchange tube (1); a first end cap (6) and a second end cap (7) are fixedly connected to the outer side of the flanges (5) by threads respectively.

2. The novel drying furnace heat exchange pipe structure of a hot-dip galvanizing unit according to claim 1, characterized in that: An L-shaped inlet tube (8) is fixedly installed inside the first end cap (6) and the second end cap (7). One end of the L-shaped inlet tube (8) extends through to the outside of the first end cap (6) and the second end cap (7).

3. The novel drying furnace heat exchange pipe structure of a hot-dip galvanizing unit according to claim 2, characterized in that: The L-shaped inlet pipe (8) is fixedly connected to the first inlet pipe (9) and the first outlet pipe (10) by bolts. The first inlet pipe (9) and the first outlet pipe (10) are located at both ends of the inner heat exchange pipe (3) and are deployed in opposite directions.

4. The novel drying furnace heat exchange pipe structure of a hot-dip galvanizing unit according to claim 1, characterized in that: The second inlet pipe (11) and the second outlet pipe (12) are fixedly connected to the other side of the first end cap (6) and the second end cap (7) by bolts. The second inlet pipe (11) and the second outlet pipe (12) are located at both ends of the external heat exchange tube (1) and are deployed in opposite directions.

5. The novel drying furnace heat exchange pipe structure of a hot-dip galvanizing unit according to claim 2, characterized in that: The L-shaped inlet pipe (8) is fixedly installed with a sealing extension pipe (13) at one end near the inner heat exchange pipe (3). The sealing extension pipe (13) is embedded in the inner heat exchange pipe (3), and a chamfer is provided on the outer side of the end of the sealing extension pipe (13).

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