Vertical steam boiler with modular combustion chamber

Abstract

The utility model relates to the technical field of steam boiler, and disclose a kind of vertical steam boiler of modular combustion chamber, and the fixed side of the combustion net disc on the cylindrical furnace body is away from hinged end is equipped with clamping rod, clamping rod is extended after the base and the buckle of the lateral rotation connection of cylindrical furnace body are matched buckling, to be placed horizontally with the bottom of cylindrical furnace body with combustion net disc;Modular return fire tube assembly is integrally installed in cylindrical furnace body, and modular return fire tube assembly includes upper mounting disc, lower mounting disc, combustion channel and several S type return fire tube.Modular design of modular return fire tube assembly simplifies installation process, improves installation accuracy.S type return fire tube and closed heat exchange chamber design improve heat exchange efficiency, integrated design enhances structural strength and stability, combustion net disc and U type guide slot design make dust removal operation simple and efficient.Overall improve operating efficiency, reduce energy consumption and maintenance cost, enhance security.

Description

Technical Field

[0001] This utility model belongs to the field of steam boiler technology, specifically relating to a vertical steam boiler with a modular combustion chamber. Background Technology

[0002] In industrial production and daily life, steam boilers, as important heat energy conversion equipment, are widely used in power generation, heating, chemical industry, food processing, and other fields. Traditional vertical steam boilers typically employ a fixed, vertically arranged fire-tube structure. The fire-tube assemblies need to be assembled on-site, a cumbersome installation process prone to errors, which affects the overall performance of the boiler. The fixed, vertically arranged fire-tube design limits the heat exchange area between flue gas and water, resulting in low heat exchange efficiency and low energy utilization. Furthermore, the single flue gas flow path fails to fully utilize the heat from the flue gas, leading to incomplete heat exchange.

[0003] In summary, existing technologies have many shortcomings in terms of installation, maintenance, heat exchange efficiency, structural stability, and ease of operation, and there is an urgent need for a modular combustion chamber vertical steam boiler design to solve these problems. Utility Model Content

[0004] The present invention addresses the technical problem of the single flue gas flow path and inconvenient assembly in the prior art of steam boilers. The modular combustion chamber vertical steam boiler significantly improves the boiler's thermal efficiency, ease of maintenance and structural stability through modular design, optimized flue gas flow path and increased heat exchange area.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vertical steam boiler with a modular combustion chamber includes:

[0007] The cylindrical furnace body has its internal space serving as the combustion chamber of a vertical steam boiler. A base is provided at the bottom of the furnace body, and a combustion mesh plate is hinged to the bottom of the furnace body inside the base. A locking rod is fixed on the side of the combustion mesh plate away from the hinge end. After the locking rod extends out of the base, it engages with a buckle that is rotatably connected to the outside of the cylindrical furnace body to place the combustion mesh plate horizontally at the bottom of the cylindrical furnace body.

[0008] The modular return fire tube assembly is installed as a single unit inside the cylindrical furnace body. The modular return fire tube assembly includes an upper mounting plate, a lower mounting plate, a combustion channel connecting the upper mounting plate and the lower mounting plate, and several S-shaped return fire tubes arranged in a ring at equal intervals between the upper mounting plate and the lower mounting plate and located outside the combustion channel.

[0009] Preferably, the base has a U-shaped guide groove. After the lever disengages from the buckle, it moves up and down along the U-shaped guide groove to shake off the soot on the combustion mesh.

[0010] Preferably, the bottom of the cylindrical furnace body and the base are provided with ash removal ports.

[0011] Preferably, the lower mounting plate is bolted to the lower sealing plate at the bottom of the inner side of the cylindrical furnace body, and the upper mounting plate is bolted to the upper sealing plate at the top of the inner side of the cylindrical furnace body.

[0012] Preferably, a heat exchange chamber is formed between the lower mounting plate, the upper mounting plate, the combustion channel, and the cylindrical furnace body, and the S-shaped return fire tube is located in the heat exchange chamber.

[0013] As a preferred option, the S-type return fire tube includes unconnected straight fire tubes and U-type fire tubes.

[0014] Preferably, the bottom surface of the lower mounting plate, located on the outer side of the combustion channel, is provided with a concave flue gas inlet ring groove. The bottom of the upper mounting plate is provided with a secondary flue gas return chamber that communicates with the combustion channel. The bottom of the secondary flue gas return chamber is provided with a primary flue gas return chamber. Both ends of the direct-fire tube are connected to the flue gas inlet ring groove and the primary flue gas return chamber. Both ends of the U-shaped fire tube are connected to the primary flue gas return chamber and the secondary flue gas return chamber.

[0015] Preferably, the flue gas from the combustion chamber first enters the flue gas inlet ring groove, then passes through the direct fire tube and is sent to the first-stage flue gas return chamber. The flue gas in the first-stage flue gas return chamber first returns to the lower mounting plate through the U-shaped fire tube and then returns to the second-stage flue gas return chamber before entering the combustion channel.

[0016] Preferably, the primary flue gas return chamber and the secondary flue gas return chamber are connected by a number of connecting rods arranged in a ring at equal intervals.

[0017] Preferably, the lower mounting plate is provided with an outer ring groove, and the bottom end of the U-shaped fire tube is fixed in the outer ring groove by a pipe clamp.

[0018] Compared with the prior art, the technical effects and advantages of this utility model are:

[0019] 1. The modular return fire tube assembly of this vertical steam boiler with a modular combustion chamber can be installed as a single unit, reducing the complexity and time required for on-site assembly. Factory pre-assembly ensures installation accuracy and consistency, reducing on-site installation errors. The integrated design enhances the overall structural strength of the fire tube assembly, improving the boiler's durability and safety.

[0020] 2. The combustion mesh tray is easily disassembled and installed using levers and clips, facilitating the shaking and cleaning of soot and maintaining combustion efficiency. The levers move up and down along the U-shaped guide groove, simplifying operation, effectively shaking off soot, and reducing maintenance workload. The cooperation between the levers and clips ensures the combustion mesh tray is placed horizontally and stably, guaranteeing uniform combustion.

[0021] 3. The S-shaped return fire tube design increases the heat exchange area between flue gas and water, improving heat exchange efficiency and resulting in higher boiler thermal efficiency. The multiple return passes of flue gas through straight and U-shaped fire tubes extend the residence time of the flue gas in the heat exchange chamber, ensuring thorough heat exchange. The compact layout of the annular, equidistant fire tubes saves space and improves the overall efficiency of the boiler.

[0022] 4. The flue gas first enters the flue gas inlet annular groove, then passes through the direct-fire tubes, the primary flue gas return chamber, the U-shaped fire tubes, and the secondary flue gas return chamber before finally entering the combustion channel. This optimized flow path ensures sufficient heat exchange. By optimizing the flue gas flow path and increasing the heat exchange area, the overall thermal efficiency of the boiler is improved, and energy consumption is reduced. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the lever and buckle of this utility model;

[0025] Figure 3 This is a cross-sectional view of the present invention;

[0026] Figure 4 This is a first-view view of the cylindrical furnace body of this utility model;

[0027] Figure 5 This is a second-view view of the cylindrical furnace body of this utility model;

[0028] Figure 6 This is a first-view view of the modular return fire tube assembly of this utility model;

[0029] Figure 7 This is a second-view view of the modular return fire tube assembly of this utility model.

[0030] In the diagram: 1. Cylindrical furnace body; 2. Base; 3. Combustion mesh plate; 4. Clamping rod; 5. Buckle; 6. Upper mounting plate; 7. Lower mounting plate; 8. Combustion channel; 9. S-shaped return fire tube; 10. U-shaped guide groove; 11. Ash removal port; 12. Lower sealing plate; 13. Upper sealing plate; 14. Heat exchange chamber; 15. Straight fire tube; 16. U-shaped fire tube; 17. Flue gas inlet ring groove; 18. Secondary flue gas return chamber; 19. Primary flue gas return chamber; 20. Connecting rod; 21. Outer ring groove; 22. Modular return fire tube assembly. Detailed Implementation

[0031] 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 protection scope of the present utility model.

[0032] The following combination Figures 1 to 7 This application will be described in further detail.

[0033] This application discloses a vertical steam boiler with a modular combustion chamber, including a cylindrical furnace body 1 and a modular return fire tube assembly 22. The internal space of the cylindrical furnace body 1 serves as the combustion chamber of the vertical steam boiler. The modular return fire tube assembly 22 is integrally installed inside the cylindrical furnace body 1.

[0034] The modular design of the modular return fire tube assembly 22 allows for one-time, complete installation of the fire tube assembly, reducing the complexity and time required for on-site assembly. The integrated assembly is pre-assembled in the factory, ensuring installation accuracy and consistency and reducing on-site installation errors. The modular return fire tube assembly 22 can be completely disassembled and replaced when maintenance or replacement is needed, reducing downtime and maintenance costs. The integrated design enhances the overall structural strength of the fire tube assembly, improving the boiler's durability and safety.

[0035] The bottom of the furnace body is provided with a base 2, and a combustion mesh plate 3 is hinged to the bottom of the furnace body inside the base 2. A locking rod 4 is fixed on the side of the combustion mesh plate 3 away from the hinge end. After the locking rod 4 extends out of the base 2, it cooperates with the buckle 5 that is rotatably connected to the outside of the cylindrical furnace body 1 to fasten the combustion mesh plate 3 horizontally at the bottom of the cylindrical furnace body 1.

[0036] The base 2 has a U-shaped guide groove 10. After the lever 4 is released from the buckle 5, the lever 4 moves up and down along the U-shaped guide groove 10 to shake off the soot on the burning mesh 3.

[0037] The bottom of the cylindrical furnace body 1 and the base 2 are respectively provided with ash removal ports 11.

[0038] The combustion mesh disc 3 can be easily disassembled and installed using the clamping rod 4 and the clip 5, facilitating the shaking and cleaning of soot and maintaining combustion efficiency. The clamping rod 4 moves up and down along the U-shaped guide slot 10, making operation simple, effectively shaking off soot, and reducing maintenance workload. The cooperation between the clamping rod 4 and the clip 5 ensures that the combustion mesh disc 3 is placed horizontally and stably, guaranteeing uniform combustion. The ash removal port 11 on the bottom of the cylindrical furnace body 1 and the base 2 facilitates centralized cleaning of accumulated ash, keeping the boiler interior clean.

[0039] The modular return fire tube assembly 22 includes an upper mounting plate 6, a lower mounting plate 7, a combustion channel 8 connecting the upper mounting plate 6 and the lower mounting plate 7, and a number of S-shaped return fire tubes 9 arranged in a ring at equal intervals between the upper mounting plate 6 and the lower mounting plate 7 and located outside the combustion channel 8.

[0040] The lower mounting plate 7 is bolted to the lower sealing plate 12 at the bottom of the inner side of the cylindrical furnace body 1, and the upper mounting plate 6 is bolted to the upper sealing plate 13 at the top of the inner side of the cylindrical furnace body 1.

[0041] The S-shaped return fire tube design 9 increases the heat exchange area between flue gas and water, improving heat exchange efficiency and resulting in higher boiler thermal efficiency. The multiple return passes of the flue gas through the straight fire tube 15 and U-shaped fire tube 16 extend the residence time of the flue gas in the heat exchange chamber 14, ensuring thorough heat exchange. The compact layout of the annular, equidistant fire tubes saves space and improves the overall efficiency of the boiler.

[0042] The lower mounting plate 7, the upper mounting plate 6, the combustion channel 8, and the cylindrical furnace body 1 form a heat exchange chamber 14 for water heat exchange, and the S-shaped return fire tube 9 is located in the heat exchange chamber 14.

[0043] The heat exchange chamber 14, formed by the lower mounting plate 7, the upper mounting plate 6, the combustion channel 8, and the cylindrical furnace body 1, creates a closed heat exchange space, ensuring that heat is transferred to the water to the maximum extent. The S-shaped return fire tubes 9, arranged in annular and equidistant patterns, ensure that the flue gas is evenly distributed within the heat exchange chamber 14, improving the heat exchange effect.

[0044] The S-type return tube 9 includes a straight tube 15 and a U-shaped tube 16 that are not connected. A concave flue gas inlet annular groove 17 is provided on the bottom surface of the lower mounting plate 7, located on the outer side of the combustion channel 8. A secondary flue gas return chamber 18, communicating with the combustion channel 8, is provided at the bottom of the upper mounting plate 6. A primary flue gas return chamber 19 is provided at the bottom of the secondary flue gas return chamber 18. Both ends of the straight tube 15 are connected to the flue gas inlet annular groove 17 and the primary flue gas return chamber 19. Both ends of the U-shaped tube 16 are connected to the primary flue gas return chamber 19 and the secondary flue gas return chamber 18. The primary flue gas return chamber 19 and the secondary flue gas return chamber 18 are connected by a series of connecting rods 20 arranged in a ring at equal intervals. An outer annular groove 21 is provided on the lower mounting plate 7, and the bottom end of the U-shaped tube 16 is fixed within the outer annular groove 21 by a pipe clamp.

[0045] The flue gas from the combustion chamber first enters the flue gas inlet ring groove 17, then passes through the direct fire tube 15 and is sent into the primary flue gas return chamber 19. The flue gas in the primary flue gas return chamber 19 first returns to the lower mounting plate 7 through the U-shaped fire tube 16 and then returns to the secondary flue gas return chamber 18, and enters the combustion channel 8.

[0046] The flue gas first enters the flue gas inlet ring groove 17, then passes through the direct fire tube 15, the first-stage flue gas return chamber 19, the U-shaped fire tube 16, the second-stage flue gas return chamber 18, and finally enters the combustion channel 8. The process is reasonable and the heat exchange is sufficient.

[0047] By optimizing the flue gas flow path and increasing the heat exchange area, the overall thermal efficiency of the boiler is improved, and energy consumption is reduced. Modular design and convenient ash removal operations reduce maintenance workload and costs. Integrated installation and structural optimization enhance the boiler's stability and safety, reducing operational risks.

[0048] In summary, this modular combustion chamber vertical steam boiler achieves efficient heat exchange, convenient maintenance, and structural stability through modular design, optimized flue gas flow path, and increased heat exchange area, significantly improving the overall performance and economic benefits of the boiler.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vertical steam boiler with a modular combustion chamber, characterized in that, include: A cylindrical furnace body (1) has its internal space serving as the combustion chamber for a vertical steam boiler; The bottom of the furnace body is provided with a base (2), and a combustion mesh plate (3) is hinged to the bottom of the furnace body inside the base (2). A clamping rod (4) is fixed on the side of the combustion mesh plate (3) away from the hinge end. After the clamping rod (4) extends out of the base (2), it is engaged with a buckle (5) that is rotatably connected to the outside of the cylindrical furnace body (1) to place the combustion mesh plate (3) horizontally at the bottom of the cylindrical furnace body (1). The modular return fire tube assembly (22) is installed as a single unit inside the cylindrical furnace body (1). The modular return fire tube assembly (22) includes an upper mounting plate (6), a lower mounting plate (7), a combustion channel (8) connecting the upper mounting plate (6) and the lower mounting plate (7), and a number of S-shaped return fire tubes (9) arranged in a ring at equal distances between the upper mounting plate (6) and the lower mounting plate (7) and located outside the combustion channel (8).

2. A vertical steam boiler with a modular combustion chamber according to claim 1, characterized in that: The base (2) has a U-shaped guide slot (10). After the lever (4) is released from the buckle (5), the lever (4) moves up and down along the U-shaped guide slot (10) to shake off the soot on the burning mesh (3).

3. A vertical steam boiler with a modular combustion chamber according to claim 1, characterized in that: The bottom of the cylindrical furnace body (1) and the base (2) are respectively provided with ash removal ports (11).

4. A vertical steam boiler with a modular combustion chamber according to claim 1, characterized in that: The lower mounting plate (7) is bolted to the lower sealing plate (12) at the bottom of the inner side of the cylindrical furnace body (1), and the upper mounting plate (6) is bolted to the upper sealing plate (13) at the top of the inner side of the cylindrical furnace body (1).

5. A vertical steam boiler with a modular combustion chamber according to claim 1, characterized in that: The lower mounting plate (7), the upper mounting plate (6), the combustion channel (8) and the cylindrical furnace body (1) form a heat exchange chamber (14) for water heat exchange, and the S-shaped return fire tube (9) is located in the heat exchange chamber (14).

6. A vertical steam boiler with a modular combustion chamber according to claim 1, characterized in that: The S-type return fire tube (9) includes a non-connected straight fire tube (15) and a U-type fire tube (16).

7. A vertical steam boiler with a modular combustion chamber according to claim 6, characterized in that: The bottom surface of the lower mounting plate (7) and the outer side of the combustion channel (8) are provided with a concave flue gas inlet ring groove (17). The bottom of the upper mounting plate (6) is provided with a secondary flue gas return chamber (18) that communicates with the combustion channel (8). The bottom of the secondary flue gas return chamber (18) is provided with a primary flue gas return chamber (19). The two ends of the direct fire tube (15) are connected to the flue gas inlet ring groove (17) and the primary flue gas return chamber (19). The two ends of the U-shaped fire tube (16) are connected to the primary flue gas return chamber (19) and the secondary flue gas return chamber (18).

8. A vertical steam boiler with a modular combustion chamber according to claim 7, characterized in that: The flue gas from the combustion chamber first enters the flue gas inlet ring groove (17), then passes through the direct fire tube (15) and is sent to the first-stage flue gas return chamber (19). The flue gas in the first-stage flue gas return chamber (19) first returns to the lower mounting plate (7) through the U-shaped fire tube (16) and then returns to the second-stage flue gas return chamber (18) before entering the combustion channel (8).

9. A vertical steam boiler with a modular combustion chamber according to claim 7, characterized in that: The primary flue gas return chamber (19) and the secondary flue gas return chamber (18) are connected by a number of connecting rods (20) arranged in a ring at equal intervals.

10. A vertical steam boiler with a modular combustion chamber according to claim 8, characterized in that: The lower mounting plate (7) is provided with an outer ring groove (21), and the bottom end of the U-shaped fire tube (16) is fixed in the outer ring groove (21) by a pipe clamp.

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