Coated heat treatment furnace regenerative burner
Patent Information
- Application Number
- CN202521958659.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-09-11
AI Technical Summary
[0004]本实用新型的目的在于提供一种包覆式热处理炉蓄热烧嘴，以解决上述背景技术中提出的现有的蓄热烧嘴内部只具备一个蓄热体，单一蓄热体换热面积有限，导致烟气余热回收效率低，能源浪费严重，而且烧嘴外壳与炉体连接处热量散失量大，不仅降低炉内加热效率，还易造成周边环境温度升高，影响操作安全性的问题
该包覆式热处理炉蓄热烧嘴通过设置第一蓄热体与第二蓄热体配合实现双层蓄热效果，蜂窝状结构的第一蓄热体可增大与气流的接触面积，提高换热效率，球状结构的第二蓄热体可增强气流的扰动，进一步提升余热回收效果，有效提高烟气余热回收效率，减少能源浪费；
Smart Images
Figure CN224756995U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heat treatment technology, specifically relating to a regenerative burner for a coated heat treatment furnace. Background Technology
[0002] In industrial heat treatment production, encasing heat treatment furnaces are widely used because they can achieve uniform heating of workpieces. Encasing heat treatment is a heat treatment method that changes the physical and mechanical properties of metal materials by heating and cooling them in a closed furnace. The regenerative burner is a part of the heat treatment furnace that can spray a combustion flame for heating. As the core heating component of the encasing heat treatment furnace, the performance of the regenerative burner directly affects the temperature uniformity, energy utilization rate and service life of the equipment.
[0003] However, existing regenerative burners only have one heat storage body inside, and the heat exchange area of a single heat storage body is limited, resulting in low efficiency of flue gas waste heat recovery and serious energy waste. Moreover, the heat loss at the connection between the burner shell and the furnace body is large, which not only reduces the heating efficiency inside the furnace, but also easily causes the ambient temperature to rise, affecting operational safety. Therefore, we propose a covered heat treatment furnace regenerative burner. Utility Model Content
[0004] The purpose of this utility model is to provide a regenerative burner for a covered heat treatment furnace, in order to solve the problems mentioned in the background art. The existing regenerative burners only have one heat storage body inside, and the heat exchange area of a single heat storage body is limited, resulting in low efficiency of flue gas waste heat recovery and serious energy waste. Moreover, the heat loss at the connection between the burner shell and the furnace body is large, which not only reduces the heating efficiency inside the furnace, but also easily causes the ambient temperature to rise, affecting the operational safety.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a regenerative burner for a covered heat treatment furnace, comprising a burner body, wherein the burner body includes a tube and a heat insulation mechanism disposed outside the tube; The interior of the tube body consists of a combustion chamber, a transition chamber, and a heat storage chamber that are interconnected from front to back. A gas inlet pipe and an auxiliary combustion gas inlet pipe that are connected to the combustion chamber are installed through the front side of the tube body. A flame outlet gas hood is fixedly installed on the back side surface of the tube body. An installation ring is fixedly installed on the outer surface of the flame outlet gas hood. Several installation bolts are threaded on the installation ring. A first heat storage body and a second heat storage body are provided inside the heat storage chamber. The insulation mechanism includes two oppositely arranged insulation shells, which cover the outside of the pipe body. Insulation components are attached to the inner walls of the insulation shells. Several assembly blocks are fixedly installed on the surface of the insulation shells. Assembly screws are inserted between two opposite assembly blocks on the two insulation shells, and assembly nuts are threaded on the outer surface of the assembly screws.
[0006] By adopting the above scheme, a double-layer heat storage effect is achieved by setting up a first heat storage body and a second heat storage body in combination. The honeycomb structure of the first heat storage body can increase the contact area with the airflow and improve the heat exchange efficiency. The spherical structure of the second heat storage body can enhance the turbulence of the airflow and further improve the waste heat recovery effect, effectively improving the waste heat recovery efficiency of flue gas and reducing energy waste. By setting up a heat preservation mechanism, the heat preservation components can effectively reduce the heat loss of the burner body. The sealing ring can seal the connection between the flame outlet and the furnace body, further reducing heat loss and improving the heating efficiency inside the furnace. At the same time, it can prevent the ambient temperature from being too high and improve operational safety. In addition, the heat preservation shell is designed to be detachable, which is convenient for timely cleaning and maintenance. The setting of the baffle can ensure that the airflow is uniform and stable in the transition cavity, avoiding airflow turbulence that leads to incomplete fuel combustion.
[0007] In a preferred embodiment, a plurality of guide plates are fixedly installed on the inner wall of the transition cavity, and two adjacent guide plates are arranged perpendicularly to each other.
[0008] With the above scheme, adjacent guide vanes are arranged perpendicular to each other to ensure that the airflow flows evenly and stably in the transition cavity, and to avoid incomplete fuel combustion caused by airflow turbulence.
[0009] In a preferred embodiment, the first heat storage body is specifically made of honeycomb-shaped cordierite-mullite material, and the second heat storage body is specifically made of spherical corundum material.
[0010] By adopting the above scheme, the two heat storage bodies are used in combination, which not only achieves high-efficiency heat storage performance, but also significantly improves the high-temperature resistance of the heat storage bodies, ensuring the stable operation of the burner under high-temperature conditions.
[0011] In a preferred embodiment, the insulation component is specifically aluminum silicate fiber insulation cotton, and the thickness of the insulation component is 30-50mm.
[0012] By adopting the above solution, the installation of insulation components can ensure good insulation effect, reduce heat loss, and have good insulation performance.
[0013] In a preferred embodiment, a sealing groove is provided on the outer surface of the flame outlet gas hood, and a sealing ring is embedded in the sealing groove, specifically the sealing ring being made of graphite filler material.
[0014] Using the above solution, the sealing ring is used in conjunction with the flame outlet gas hood. When the flame outlet gas hood is inserted into the installation port on the heat treatment furnace, the sealing ring can effectively seal against the inner wall of the installation port, further preventing heat loss and effectively preventing heat loss and gas leakage at the connection between the flame outlet and the furnace body.
[0015] In a preferred embodiment, a plurality of alignment blocks are fixedly installed on the outer surface of the tube body, a through hole is provided at the position where the heat insulation component is directly opposite the alignment block, and an alignment slot is provided on the inner wall of the heat insulation shell for the alignment block to be inserted.
[0016] By using the above solution, the alignment block can be inserted into the alignment slot after passing through the through hole, which can align the two insulation shells during assembly, avoid misalignment, and improve the convenience of assembly operations.
[0017] Compared with the prior art, the beneficial effects of this utility model are: The regenerative burner of this encapsulated heat treatment furnace achieves a double-layer heat storage effect by setting a first heat storage body and a second heat storage body in combination. The honeycomb structure of the first heat storage body can increase the contact area with the airflow and improve the heat exchange efficiency, while the spherical structure of the second heat storage body can enhance the turbulence of the airflow and further improve the waste heat recovery effect, effectively improving the waste heat recovery efficiency of flue gas and reducing energy waste. This encapsulated heat treatment furnace regenerative burner features an insulation mechanism that effectively reduces heat loss from the burner body. A sealing ring ensures a tight seal between the flame outlet and the furnace body, further reducing heat loss and improving furnace heating efficiency. It also prevents excessively high ambient temperatures, enhancing operational safety. The removable insulation shell facilitates timely cleaning and maintenance. The baffle plate ensures uniform and stable airflow within the transition chamber, preventing turbulent airflow that could lead to incomplete fuel combustion. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the present invention from another angle; Figure 3 This is a schematic diagram of the exploded structure of the tube body and insulation mechanism of this utility model; Figure 4 This is a structural schematic diagram of the cross-section of the tube body of this utility model; Figure 5 This is a schematic diagram of the structure of the insulation mechanism of this utility model in the event of an explosion.
[0019] In the diagram: 1. Burner body; 2. Tube body; 3. Combustion chamber; 4. Transition chamber; 5. Heat storage chamber; 6. Gas inlet pipe; 7. Auxiliary combustion gas inlet pipe; 8. Flame outlet hood; 9. Mounting ring; 10. Mounting bolt; 11. Insulation mechanism; 12. Baffle plate; 13. First heat storage body; 14. Second heat storage body; 15. Sealing ring; 16. Insulation shell; 17. Insulation component; 18. Assembly block; 19. Assembly screw; 20. Assembly nut; 21. Alignment insert. Detailed Implementation
[0020] Please see Figure 1-5 This utility model provides a regenerative burner for a covered heat treatment furnace, including a burner body 1, the burner body 1 including a tube 2 and a heat insulation mechanism 11 disposed outside the tube 2. The interior of the tube body 2 is formed sequentially from front to back into an interconnected combustion chamber 3, a transition chamber 4, and a heat storage chamber 5. Several guide plates 12 are fixedly installed on the inner wall of the transition chamber 4. The two adjacent guide plates 12 are arranged perpendicularly to each other to ensure that the airflow flows evenly and stably in the transition chamber 4 and to avoid incomplete fuel combustion caused by airflow turbulence. The front side of the pipe body 2 is connected to the combustion chamber 3 by a gas inlet pipe 6 and an auxiliary combustion gas inlet pipe 7. The back side of the pipe body 2 is fixedly installed with a flame outlet gas hood 8. The outer surface of the flame outlet gas hood 8 is provided with a sealing groove, and a sealing ring 15 is embedded in the sealing groove. The sealing ring 15 is made of graphite filler material. The sealing ring 15 is used in conjunction with the flame outlet gas hood 8. When the flame outlet gas hood 8 is inserted into the installation port on the heat treatment furnace, the sealing ring 15 can effectively seal and fit with the inner wall of the installation port, which further avoids heat loss and can effectively prevent heat loss and gas leakage at the connection between the flame outlet and the furnace body. An installation ring 9 is fixedly installed on the outer surface of the flame outlet gas hood 8. Several installation bolts 10 are threaded on the installation ring 9. A first heat storage body 13 and a second heat storage body 14 are provided in the heat storage chamber 5. The first heat storage body 13 is made of honeycomb cordierite-mullite material, and the second heat storage body 14 is made of spherical corundum material. The two heat storage bodies work together to achieve efficient heat storage performance and significantly improve the high temperature resistance of the heat storage body, ensuring that the burner operates stably under high temperature conditions. The insulation mechanism 11 includes two insulation shells 16 arranged opposite each other. Several alignment blocks 21 are fixedly installed on the outer surface of the tube body 2. A through hole is opened at the position where the insulation component 17 is directly opposite the alignment block 21. An alignment slot is opened on the inner wall of the insulation shell 16 for the alignment block 21 to be inserted. By inserting the alignment block 21 through the through hole into the alignment slot, the two insulation shells 16 can be aligned during assembly to avoid misalignment and improve the convenience of assembly operation.
[0021] Two insulation shells 16 are installed on the outside of the pipe body 2. Insulation components 17 are pasted on the inner wall of the insulation shells 16. Several assembly blocks 18 are fixedly installed on the surface of the insulation shells 16. Assembly screws 19 are inserted between two opposing assembly blocks 18 on the two insulation shells 16. Assembly nuts 20 are threaded on the outer surface of the assembly screws 19. The insulation components 17 are specifically aluminum silicate fiber insulation cotton, and the thickness of the insulation components 17 is 30-50mm. By adopting the above scheme, the setting of the insulation components 17 can ensure good insulation effect, reduce heat loss, and have good insulation performance. In use, the flame outlet gas cover 8 on the burner body 1 is inserted into the mounting port of the encapsulated heat treatment furnace, facing the flame outlet gas cover 8. After insertion, the sealing ring 15 is used to seal and insulate the mounting port, which can effectively prevent heat loss and gas leakage at the connection between the flame outlet and the furnace body. Then, the burner body 1 is installed and fixed using the mounting bolts 10. After fixing, the gas and auxiliary combustion gas are fed into the combustion chamber 3 through the gas inlet pipe 6 and the auxiliary combustion gas inlet pipe 7, respectively, for combustion. After combustion, the gas passes through the transition chamber 4 and the guide plate 12 to guide and transport the gas to the heat storage chamber 5, and then enters the encapsulated heat treatment furnace from the flame outlet gas cover 8 to achieve heat treatment heating. At the same time, the heat preservation mechanism 11 is used to achieve heat preservation. After combustion, the flue gas generated in the furnace enters the heat storage chamber 5 through the flue gas, and passes through the second heat storage body 14 and the first heat storage body 13 in sequence to transfer heat to the heat storage body and achieve waste heat recovery. The assembly screws 19 and the assembly nuts 20 can be unscrewed to assemble and fix the two heat preservation shells 16, and then the heat preservation shells 16 can be disassembled.
Claims
1. A regenerative burner for a coated heat treatment furnace, characterized in that: It includes a burner body (1), which includes a tube (2) and a heat preservation mechanism (11) disposed outside the tube (2). The interior of the tube (2) is formed sequentially from front to back into a combustion chamber (3), a transition chamber (4), and a heat storage chamber (5) that are interconnected. A gas inlet pipe (6) and an auxiliary combustion gas inlet pipe (7) connected to the combustion chamber (3) are installed through the front side of the tube (2). A flame outlet gas hood (8) is fixedly installed on the back side surface of the tube (2). An installation ring (9) is fixedly installed on the outer surface of the flame outlet gas hood (8). Several installation bolts (10) are threaded on the installation ring (9). A first heat storage body (13) and a second heat storage body (14) are provided inside the heat storage chamber (5). The insulation mechanism (11) includes two oppositely arranged insulation shells (16), which cover the outside of the tube body (2). Insulation components (17) are attached to the inner wall of the insulation shells (16), and several assembly blocks (18) are fixedly installed on the surface of the insulation shells (16). Assembly screws (19) are passed between two opposite assembly blocks (18) on the two insulation shells (16), and assembly nuts (20) are threaded on the outer surface of the assembly screws (19).
2. The regenerative burner for a coated heat treatment furnace according to claim 1, characterized in that: The inner wall of the transition cavity (4) is fixedly equipped with several guide plates (12), and two adjacent guide plates (12) are arranged perpendicular to each other.
3. The regenerative burner for a coated heat treatment furnace according to claim 1, characterized in that: The first heat storage body (13) is specifically made of honeycomb cordierite-mullite material, and the second heat storage body (14) is specifically made of corundum material with a spherical structure.
4. The regenerative burner for a coated heat treatment furnace according to claim 1, characterized in that: The insulation component (17) is specifically aluminum silicate fiber insulation cotton, and the thickness of the insulation component (17) is 30-50mm.
5. The regenerative burner for a coated heat treatment furnace according to claim 1, characterized in that: The outer surface of the flame outlet gas cover (8) is provided with a sealing groove, and a sealing ring (15) is embedded in the sealing groove. The sealing ring (15) is specifically made of graphite filler material.
6. The regenerative burner for a coated heat treatment furnace according to claim 1, characterized in that: A number of alignment blocks (21) are fixedly installed on the outer surface of the tube body (2). A through hole is provided at the position where the heat insulation component (17) is directly opposite to the alignment block (21). An alignment slot is provided on the inner wall of the heat insulation shell (16) for the alignment block (21) to be inserted.