High-temperature hot air heat exchanger

Abstract

The utility model relates to the technical field of heat exchange equipment, in particular to a high-temperature hot air heat exchanger which comprises a shell, two smoke pipe plates are horizontally arranged in the shell, a heat exchange channel is formed in the space between the smoke pipe plates, a plurality of heat exchange pipes are vertically installed in the heat exchange channel, and the two ends of each heat exchange pipe penetrate through the smoke pipe plates. A smoke collecting chamber is formed between the outer side of the smoke tube plate and the inner wall of the shell, a hot air outlet is formed in one end of the heat exchange channel, and a cold air inlet is formed in the other end of the heat exchange channel. According to the high-temperature hot air heat exchanger, the heat exchange channel structure is reasonably designed, particularly, the heat exchange pipes are vertically arranged at equal intervals, the smoke collecting chamber is divided into a plurality of spaces through the partition plates, and the channels for flue gas to flow in an S shape are formed, so that the contact area of hot air and a cooling medium is effectively increased, heat transfer is more sufficient, and the heat exchange efficiency is improved. Therefore, the heat energy utilization efficiency is remarkably improved, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a high-temperature hot air heat exchanger. Background Art

[0002] In current industrial production, especially in high-temperature process fields such as energy, chemical industry, and metallurgy, the application of high-temperature hot air heat exchangers plays a vital role. These industries not only require heat exchange equipment to operate stably under extreme high temperature conditions, but also put forward strict requirements on its heat exchange efficiency, corrosion resistance, and maintenance convenience. However, the existing high-temperature hot air heat exchangers still have some significant defects in practical applications.

[0003] First, some high-temperature hot air heat exchangers fail to fully optimize the structure of the heat exchange channel in their design, resulting in limited heat exchange efficiency. For example, the heat exchange tubes are not arranged reasonably, the contact area between the hot air and the cooling medium is insufficient, or the hot air flow path is not smooth enough, resulting in insufficient heat transfer and affecting the overall thermal energy utilization efficiency.

[0004] Secondly, maintenance difficulty is also a major challenge faced by existing high-temperature hot air heat exchangers. Due to the complex structure of the equipment and the harsh working environment, regular cleaning, inspection and maintenance work become extremely difficult, increasing the operating cost and maintenance risk of the equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a high-temperature hot air heat exchanger to solve the problem that some high-temperature hot air heat exchangers proposed in the above background technology fail to fully optimize the structure of the heat exchange channel in design, resulting in limited heat exchange efficiency. For example, the layout of the heat exchange tubes is not reasonable, the contact area between the hot air and the cooling medium is insufficient, or the hot air flow path is not smooth enough, resulting in insufficient heat transfer and affecting the overall thermal energy utilization efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides a high-temperature hot air heat exchanger, including a shell, two smoke tube plates are horizontally arranged inside the shell, the space between the smoke tube plates forms a heat exchange channel, and a plurality of heat exchange tubes are vertically installed in the heat exchange channel. Both ends of the heat exchange tubes pass through the smoke tube plates, and a smoke collecting chamber is formed between the outer side of the smoke tube plates and the inner wall of the shell. A hot air outlet is arranged at one end of the heat exchange channel, and a cold air inlet is arranged at the other end.

[0007] Preferably, a plurality of partitions are installed inside the shell at the outer side of the smoke tube plate, the partitions divide the smoke collecting chamber into a plurality of spaces, and the heat exchange tubes and the smoke collecting chamber form a channel for the smoke to flow in an S shape.

[0008] Preferably, a smoke inlet is provided on a side of one end of the shell, and a smoke outlet is provided on the other end of the shell.

[0009] Preferably, the inner wall of the shell is provided with a heat-insulating layer.

[0010] Preferably, legs are installed at the bottom of the shell, and ears are installed at both sides of the top of the shell.

[0011] Preferably, angle steels are provided at both ends of the shell, and the angle steels at both ends support and position the hot air outlet and the cold air inlet respectively.

[0012] Preferably, an ash cleaning port is provided on one side outer wall of the smoke collecting chamber.

[0013] Preferably, the heat exchange tubes are arranged at equal intervals.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In this high-temperature hot air heat exchanger, by rationally designing the heat exchange channel structure, especially the vertical equal-spacing arrangement of the heat exchange tubes, and using partitions to divide the smoke collection chamber into multiple spaces, a channel for the smoke to flow in an S shape is formed, which effectively increases the contact area between the hot air and the cooling medium, making the heat transfer more sufficient, thereby significantly improving the thermal energy utilization efficiency and the heat exchange efficiency.

[0016] Secondly, the high-temperature hot air heat exchanger of the utility model takes maintenance convenience into consideration in its structural design. Through reasonable layout and setting of structures such as cleaning ports, the cleaning, inspection and maintenance of the equipment become easier, thereby reducing the operating cost and maintenance risk of the equipment and improving the overall reliability and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model from the side;

[0019] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0020] The meaning of each number in the figure is:

[0021] 1. Shell; 11. Legs; 12. Smoke inlet; 13. Angle steel; 14. Insulation layer; 15. Smoke outlet; 16. Lifting ears; 17. Ash cleaning outlet; 2. Smoke tube plate; 21. Hot air outlet; 22. Heat exchange tube; 23. Partition; 24. Cold air inlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a high-temperature hot air heat exchanger, such as Figure 1-Figure 3 As shown, it includes a shell 1, two smoke tube plates 2 are horizontally arranged inside the shell 1, and the space between the smoke tube plates 2 forms a heat exchange channel. Several heat exchange tubes 22 are vertically installed in the heat exchange channel. Both ends of the heat exchange tubes 22 pass through the smoke tube plates 2. A smoke collecting chamber is formed between the outer side of the smoke tube plates 2 and the inner wall of the shell 1. A hot air outlet 21 is arranged at one end of the heat exchange channel, and a cold air inlet 24 is arranged at the other end. The two smoke tube plates 2 arranged horizontally inside the heat exchanger, the heat exchange channel between them and several heat exchange tubes 22 installed vertically together constitute an efficient heat exchange system. This design allows the hot air to fully contact the heat exchange tube, thereby achieving efficient heat transfer and improving the utilization efficiency of thermal energy. A hot air outlet 21 is arranged at one end of the heat exchange channel, and a cold air inlet 24 is arranged at the other end. This layout ensures the orderly flow of hot air and cold air in the heat exchange channel, further enhancing the heat exchange effect. The smoke collecting chamber formed between the outer side of the smoke tube plate 2 and the inner wall of the shell 1 not only provides sufficient flow space for the smoke, but also helps to evenly distribute the smoke, thereby improving the heat exchange efficiency. The overall design makes the heat exchanger compact and occupies a small area. At the same time, both ends of the heat exchange tube 22 pass through the smoke tube plate 2, which enhances the stability of the structure and makes the heat exchanger more reliable and durable in practical applications.

[0024] In this embodiment, a plurality of partitions 23 are installed inside the shell 1 on the outside of the smoke tube plate 2. The partitions 23 divide the smoke collecting chamber into multiple spaces. The heat exchange tubes 22 and the smoke collecting chamber form a channel for the smoke to flow in an S shape, thereby increasing the flow distance of the smoke and improving the heat exchange time.

[0025] Specifically, a smoke inlet 12 is disposed on the side of one end of the shell 1, and a smoke outlet 15 is disposed on the other end of the shell 1 to facilitate the inflow and outflow of smoke.

[0026] Furthermore, the inner wall of the shell 1 is provided with a heat-insulating layer 14 , and the heat-insulating layer 14 is made of rock wool material to ensure a good heat-insulating effect.

[0027] Furthermore, legs 11 are installed at the bottom of the shell 1 to facilitate stable support of the shell 1 , and lifting ears 16 are installed on both sides of the top of the shell 1 to facilitate the overall lifting operation of the shell 1 .

[0028] Furthermore, angle steels 13 are provided at both ends of the shell 1, and the angle steels 13 at both ends respectively support and position the hot air outlet 21 and the cold air inlet 24, so that the hot air outlet 21 and the cold air inlet 24 are positioned and will not be offset due to collision.

[0029] Furthermore, a ash cleaning port 17 is provided on one side outer wall of the smoke collecting chamber to facilitate ash cleaning operations, and an ash cleaning door is hingedly installed on the outer side of the ash cleaning port 17 .

[0030] Furthermore, the heat exchange tubes 22 are arranged at equal intervals to ensure a uniform heat exchange effect.

[0031] When the high-temperature hot air heat exchanger of the utility model is in use, the high-temperature flue gas first enters the heat exchanger through the flue gas inlet 12 at one end of the shell 1, and first enters the smoke collecting chamber formed between the outer side of the flue gas tube plate 2 and the inner wall of the shell 1. In the smoke collecting chamber, due to the effect of the partition 23, the flue gas sequentially enters each smoke collecting chamber through different heat exchange tubes. Since the smoke collecting chamber is divided into multiple flow spaces, an S-shaped flow channel is formed, which increases the flow distance of the flue gas, thereby extending the heat exchange time and improving the heat exchange efficiency.

[0032] When the flue gas passes through the heat exchange tube 22, it exchanges heat with the cooling medium in the heat exchange tube. During the heat exchange process, the heat in the flue gas is transferred to the cold air in the heat exchange tube, thereby achieving heat transfer and recovery.

[0033] The smoke after heat exchange continues to flow and eventually leaves the heat exchanger through the smoke outlet 15 at the other end of the shell 1. At the same time, the cooling medium absorbs heat in the heat exchange tube and forms hot air, which is discharged through the hot air outlet 21 at one end of the heat exchange channel for subsequent use. The cold air inlet 24 at the other end is used to introduce new cooling medium to maintain the continuous operation of the heat exchanger.

[0034] In addition, the inner wall of the heat exchanger shell 1 is provided with an insulation layer 14, which is made of rock wool material and has good heat insulation effect, can reduce heat loss, and improve the overall heat exchange efficiency of the heat exchanger. Legs 11 are installed at the bottom of the shell 1 to stably support the heat exchanger; lifting ears 16 are installed on both sides of the top to facilitate the overall lifting operation. Angle steels 13 are also provided at both ends of the shell 1 to support and position the hot air outlet 21 and the cold air inlet 24 to prevent them from being offset by collision. A cleaning port 17 is provided on the outer wall of one side of the smoke collection chamber, and a cleaning door is hingedly installed to facilitate cleaning operations and keep the heat exchanger clean and efficient.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-temperature hot air heat exchanger, comprising a housing (1), characterized in that: Two smoke tube plates (2) are horizontally arranged inside the shell (1), and the space between the smoke tube plates (2) forms a heat exchange channel. A plurality of heat exchange tubes (22) are vertically installed in the heat exchange channel. Both ends of the heat exchange tubes (22) pass through the smoke tube plates (2), and a smoke collecting chamber is formed between the outer side of the smoke tube plates (2) and the inner wall of the shell (1). A hot air outlet (21) is arranged at one end of the heat exchange channel, and a cold air inlet (24) is arranged at the other end.

2. The high-temperature hot air heat exchanger according to claim 1, characterized in that: A plurality of partitions (23) are installed inside the shell (1) at the outer side of the smoke tube plate (2), and the partitions (23) divide the smoke collecting chamber into a plurality of spaces. The heat exchange tube (22) and the smoke collecting chamber form a channel for the smoke to flow in an S shape.

3. The high-temperature hot air heat exchanger according to claim 1, characterized in that: A smoke inlet (12) is provided on the side of one end of the shell (1), and a smoke outlet (15) is provided on the other end of the shell (1).

4. The high-temperature hot air heat exchanger according to claim 1, characterized in that: The inner wall of the shell (1) is provided with a heat-insulating layer (14).

5. The high-temperature hot air heat exchanger according to claim 1, characterized in that: The bottom of the shell (1) is provided with supporting legs (11), and the top of the shell (1) is provided with lifting ears (16) on both sides.

6. The high-temperature hot air heat exchanger according to claim 1, characterized in that: Angle steels (13) are provided at both ends of the shell (1), and the angle steels (13) at both ends respectively support and position the hot air outlet (21) and the cold air inlet (24).

7. The high-temperature hot air heat exchanger according to claim 1, characterized in that: An ash cleaning port (17) is provided on one side outer wall of the smoke collecting chamber.

8. The high-temperature hot air heat exchanger according to claim 1, characterized in that: The heat exchange tubes (22) are arranged at equal intervals.

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