Heating boiler suitable for combustion of coal with lower ash fusion point

Abstract

The utility model relates to the technical field of boilers, and discloses a heating boiler suitable for combustion of coal with a lower ash fusion point, which comprises a connecting pipe I, a left side water cooling wall fixedly connected outside the connecting pipe I, a rear wall water cooling wall fixedly connected inside the left side water cooling wall, a front wall water cooling wall fixedly connected on the left side of the rear wall water cooling wall, and a rear wall water cooling wall fixedly connected on the right side of the front wall water cooling wall. The interior of the front wall water cooling wall is fixedly connected with a front water distribution pipe, and the exterior of the front water distribution pipe is fixedly connected with a middle water distribution pipe. Water is driven to circularly flow in the components through operation of the front water distribution pipe and the middle water distribution pipe in the left water cooling wall and structures such as the second connecting pipe, the convection bank, the rear water distribution pipe, the third connecting pipe, the upper boiler barrel, the fourth connecting pipe, the top header and the fifth connecting pipe in the rear water cooling wall. Therefore, the beneficial effect that the heat is transferred from the combustion area to all parts is achieved, the heat transfer is beneficial for the whole heating boiler to effectively utilize the heat generated by coal combustion, and enough heat energy is provided for heating.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, and in particular to a heating boiler suitable for the combustion of coal with a low ash melting point. Background Technology

[0002] With the growth of energy demand and the development of diversified utilization of coal resources, especially in response to the need for effective utilization of low-quality coal and low-ash-fusion-point coal, this device is used when burning low-ash-fusion-point coal for heating. Through optimized structural design, this device can effectively utilize the heat generated by the combustion of low-ash-fusion-point coal for heating, while ensuring the safety and stability of the boiler during operation.

[0003] Existing equipment may lack targeted reinforcement for specific parts. During long-term operation, these parts may deform or be damaged due to factors such as thermal expansion and pressure changes, resulting in significant energy loss during heat transfer. This makes it difficult to fully convert the heat generated by coal combustion into effective heat energy that can be used for heating. At the same time, the original structure may lack targeted reinforcement for specific parts. During long-term operation, these parts may deform or be damaged due to factors such as thermal expansion and pressure changes. Furthermore, the connection method of the overall structure may not be stable enough. When subjected to vibration or thermal stress, problems such as loosening of components or cracking of connection points may easily occur. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a heating boiler suitable for the combustion of coal with a low ash melting point.

[0005] This utility model is achieved by the following technical solution: a heating boiler suitable for the combustion of coal with a low ash melting point, including a connecting pipe, a left water-cooled wall fixedly connected to the outside of the connecting pipe, a rear water-cooled wall fixedly connected to the inside of the left water-cooled wall, a front water-cooled wall fixedly connected to the left side of the rear water-cooled wall, and a front water distribution pipe fixedly connected to the inside of the front water-cooled wall.

[0006] As a further improvement to the above scheme, the front water distribution pipe is externally fixedly connected to the middle water distribution pipe, the rear water-cooled wall is internally fixedly connected to the connecting pipe two, the top of the connecting pipe two is fixedly connected to the convection tube bundle, the top of the convection tube bundle is fixedly connected to the rear water distribution pipe, and the top of the rear water distribution pipe is fixedly connected to the connecting pipe three.

[0007] Through the above technical solutions, the connection between the front water distribution pipe and the middle water distribution pipe, the connection of the second connecting pipe in the rear water-cooled wall to the convection tube bundle and then to the rear water distribution pipe and the third connecting pipe, these structures improve the water circulation path. Through the operation of this structure, the water is driven to circulate in a more complex path, thereby achieving the beneficial effects of optimizing the heat transfer path and improving the heat transfer efficiency.

[0008] As a further improvement to the above scheme, the upper boiler drum is fixedly connected to the right side of the connecting pipe three, the upper boiler drum is fixedly connected to the outside of the connecting pipe four, the top header is fixedly connected to the top of the connecting pipe four, and the top header is fixedly connected to the outside of the connecting pipe five.

[0009] Through the above technical solution, connecting pipe three connects to the upper boiler drum, which is then connected to the top header via connecting pipe four and then to connecting pipe five. This structure further expands the range of water circulation. The operation of these components drives water to circulate within a wider range of components.

[0010] As a further improvement to the above scheme, the left water-cooled wall is internally fixedly connected to the right water-cooled wall, the upper boiler drum is externally fixedly connected to the connecting pipe six, the top of the left water-cooled wall is fixedly connected to the top water-cooled wall, the bottom of the top water-cooled wall is fixedly connected to the connecting manifold two, and the connecting manifold two is externally fixedly connected to the connecting pipe seven.

[0011] Through the above technical solution, the left water-cooled wall is internally connected to the right water-cooled wall, the upper boiler drum is connected to the connecting pipe six, the top of the left water-cooled wall is connected to the top water-cooled wall and related connecting headers and connecting pipe structures. Through the operation of these structures, the coordinated work between the water-cooled walls and with the upper boiler drum and other components is promoted, thereby enhancing the heat exchange capacity and structural integrity of the entire boiler.

[0012] As a further improvement to the above scheme, the bottom of the connecting pipe seven is fixedly connected to the connecting header three, the front of the top water-cooled wall is fixedly connected to the plug block, and the outside of the plug block is fixedly connected to the fin.

[0013] Through the above technical solution, the connecting pipe seven is connected to the header three, and the top water-cooled wall is connected to the plug and the plug is connected to the fins. Through the operation of these structures, the heat of the top water-cooled wall is effectively dissipated, and the fins may increase the heat dissipation area, thereby achieving the beneficial effect of improving the heat dissipation efficiency of the top water-cooled wall.

[0014] As a further improvement to the above scheme, a second block is fixedly connected to the left side of the block, a steel plate is fixedly connected to the outside of the front wall water-cooled wall, a flat steel is fixedly connected to the bottom of the steel plate, and an angle steel is fixedly connected to the bottom of the flat steel.

[0015] Through the above technical solution, the plug block is connected to the second plug block, and the front wall water-cooled wall is connected to the steel plate, flat steel and angle steel. Through the operation of these structures, the front wall water-cooled wall is reinforced and the connection stability of related components is improved, thereby achieving the beneficial effect of further enhancing the structural stability of the boiler.

[0016] As a further improvement to the above scheme, an additional water-cooled wall is fixedly connected to the inside of the left water-cooled wall, and a pipe is fixedly connected to the top of the additional water-cooled wall and a pipe is fixedly connected to the top of the additional water-cooled wall. A pipe is fixedly connected to the bottom of the connecting pipe five.

[0017] Through the above technical solution, the left water-cooled wall is connected to the newly added water-cooled wall and the newly added water-cooled wall is connected to pipe one and pipe two, and pipe five is connected to pipe three. Through the operation of these structures, heat absorption and transfer in a specific area are promoted, thereby optimizing the heat absorption in the combustion zone and adapting to the combustion characteristics of low ash melting point coal.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention utilizes the operation of structures such as the front water distribution pipe and the middle water distribution pipe inside the left water-cooled wall, as well as the connecting pipe 2, convection tube bundle, rear water distribution pipe, connecting pipe 3, upper boiler drum, connecting pipe 4, top header, and connecting pipe 5 in the rear water-cooled wall. This enables the circulation of water within these components, thereby achieving the beneficial effect of transferring heat from the combustion zone to various parts. This heat transfer helps the entire heating boiler effectively utilize the heat generated by coal combustion, providing sufficient thermal energy for heating.

[0020] This utility model utilizes the steel plates, flat steel, and angle steel structures on the exterior of the front water-cooled wall to support and reinforce the overall boiler structure. This ensures the boiler's structural stability under heat and pressure conditions, enabling it to operate safely and stably during the combustion of low-ash-melting-point coal and reducing potential safety hazards and equipment damage risks caused by structural instability. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the overall internal structure of this utility model;

[0022] Figure 2 This is a longitudinal sectional view of the overall internal structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the overall top structure of this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged view of section A in the middle;

[0025] Figure 5 This utility model Figure 1 Enlarged view of section B.

[0026] Explanation of key symbols:

[0027] 1. Connecting pipe 1; 2. Left side water-cooled wall; 3. Rear water-cooled wall; 4. Front water-cooled wall; 5. Front water distribution pipe; 6. Middle water distribution pipe; 7. Connecting pipe 2; 8. Convection tube bundle; 9. Rear water distribution pipe; 10. Connecting pipe 3; 11. Upper boiler drum; 12. Connecting pipe 4; 13. Top header; 14. Connecting pipe 5; 15. Right side water-cooled wall; 16. Connecting pipe 6; 17. Top water-cooled wall; 18. Connecting header 2; 19. Connecting pipe 7; 20. Connecting header 3; 21. Plug; 22. Fin; 23. Plug 2; 24. Steel plate; 25. Flat steel; 26. Angle steel; 27. Newly added water-cooled wall; 28. Pipe 1; 29. ​​Pipe 2; 30. Pipe 3. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] Example:

[0030] Please combine Figure 1-5 This embodiment of a heating boiler suitable for burning coal with a low ash melting point includes a connecting pipe 1. The outside of the connecting pipe 1 is fixedly connected to a left water-cooled wall 2. The inside of the left water-cooled wall 2 is fixedly connected to a rear water-cooled wall 3. The left side of the rear water-cooled wall 3 is fixedly connected to a front water-cooled wall 4. The inside of the front water-cooled wall 4 is fixedly connected to a front water distribution pipe 5.

[0031] The front wall water-cooled wall 4 is fixedly connected to the outside of the front water distribution pipe 5. The front water distribution pipe 5 is fixedly connected to the outside of the middle water distribution pipe 6. The rear wall water-cooled wall 3 is fixedly connected to the inside of the connecting pipe 2 7. The top of the connecting pipe 2 7 is fixedly connected to the convection tube bundle 8. The top of the convection tube bundle 8 is fixedly connected to the rear water distribution pipe 9. The top of the rear water distribution pipe 9 is fixedly connected to the connecting pipe 3 10.

[0032] The upper boiler drum 11 is fixedly connected to the right side of the connecting pipe 3 10. The upper boiler drum 11 is fixedly connected to the outside of the connecting pipe 4 12. The top header 13 is fixedly connected to the top of the connecting pipe 4 12. The top header 13 is fixedly connected to the outside of the connecting pipe 5 14.

[0033] The left water-cooled wall 2 is internally fixedly connected to the right water-cooled wall 15, the upper boiler drum 11 is externally fixedly connected to the connecting pipe 16, the top of the left water-cooled wall 2 is fixedly connected to the top water-cooled wall 17, the bottom of the top water-cooled wall 17 is fixedly connected to the connecting manifold 18, and the external of the connecting manifold 18 is fixedly connected to the connecting pipe 19.

[0034] The bottom of the connecting pipe 7 19 is fixedly connected to the connecting header 3 20, and the front of the top water-cooled wall 17 is fixedly connected to the plug 21, and the outside of the plug 21 is fixedly connected to the fin 22.

[0035] The front wall water-cooled wall 4 is externally fixedly connected with a steel plate 24, the left side of the plug block 21 is fixedly connected with a second plug block 23, the bottom of the steel plate 24 is fixedly connected with a flat steel 25, and the bottom of the flat steel 25 is fixedly connected with an angle steel 26.

[0036] The left water-cooled wall 2 is internally fixedly connected to a new water-cooled wall 27. The top of the new water-cooled wall 27 is fixedly connected to a pipe 1 28 and a pipe 29. The bottom of the connecting pipe 5 14 is fixedly connected to a pipe 30.

[0037] The implementation principle of a heating boiler suitable for burning coal with a low ash melting point in this application embodiment is as follows: Starting from the connecting pipe 1, water enters the left water-cooled wall 2. The front water distribution pipe 5, the middle water distribution pipe 6, and other structures inside the left water-cooled wall 2 distribute the water. The connecting pipe 7 in the rear water-cooled wall 3 is connected to the convection tube bundle 8, which is then connected to the rear water distribution pipe 9 and the connecting pipe 3 10. Water flows in these components, forming part of a circulation path. The connecting pipe 3 10 is connected to the upper boiler drum 11, which is connected to the top header 13 through the connecting pipe 4 12. Then, the water continues to circulate through the connecting pipe 5 14 and other components. The flow of water between these components helps to transfer heat to various parts. The left water-cooled wall 2 and the right water-cooled wall 3... The top water-cooled wall 17 on the left side of the water-cooled wall 2, together with the connecting header 2 18, connecting pipe 7 19, and connecting header 3 20, forms a water circulation path. This helps to ensure the cooling and heat transfer of the top water-cooled wall 17. The steel plate 24, flat steel 25, and angle steel 26 on the outside of the front wall water-cooled wall 4 play a supporting and reinforcing role. These structures ensure the stability of the overall boiler structure under heat and pressure. In addition to possibly playing a role in water circulation or heat transfer, components such as plug 21 and plug 23 also help to maintain the integrity of the relevant structures. The fins 22 are connected to the plug 21, which may help to increase the heat dissipation area or improve the stability of the structure.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A heating boiler suitable for burning coal with a low ash melting point, characterized in that, It includes a connecting pipe (1), the outside of which is fixedly connected to a left water-cooled wall (2), the inside of which is fixedly connected to a rear water-cooled wall (3), the left side of which is fixedly connected to a front water-cooled wall (4), and the inside of which is fixedly connected to a front water distribution pipe (5).

2. A heating boiler suitable for burning coal with a low ash melting point as described in claim 1, characterized in that: The front wall water-cooled wall (4) is fixedly connected to the outside of the front water distribution pipe (5). The front water distribution pipe (5) is fixedly connected to the outside of the middle water distribution pipe (6). The rear wall water-cooled wall (3) is fixedly connected to the inside of the connecting pipe (7). The top of the connecting pipe (7) is fixedly connected to the convection tube bundle (8). The top of the convection tube bundle (8) is fixedly connected to the rear water distribution pipe (9). The top of the rear water distribution pipe (9) is fixedly connected to the connecting pipe (10).

3. A heating boiler suitable for burning coal with a low ash melting point as described in claim 2, characterized in that: The upper boiler drum (11) is fixedly connected to the right side of the connecting pipe three (10), the upper boiler drum (11) is fixedly connected to the outside of the connecting pipe four (12), the top header (13) is fixedly connected to the top of the connecting pipe four (12), and the top header (13) is fixedly connected to the outside of the connecting pipe five (14).

4. A heating boiler suitable for burning coal with a low ash melting point as described in claim 3, characterized in that: The left water-cooled wall (2) is fixedly connected to the right water-cooled wall (15) inside, the upper boiler drum (11) is fixedly connected to the outside of the connecting pipe six (16), the top of the left water-cooled wall (2) is fixedly connected to the top water-cooled wall (17), the bottom of the top water-cooled wall (17) is fixedly connected to the connecting manifold two (18), and the outside of the connecting manifold two (18) is fixedly connected to the connecting pipe seven (19).

5. A heating boiler suitable for burning coal with a low ash melting point as described in claim 4, characterized in that: The bottom of the connecting pipe seven (19) is fixedly connected to the connecting header three (20), the front of the top water-cooled wall (17) is fixedly connected to the plug (21), and the outside of the plug (21) is fixedly connected to the fin (22).

6. A heating boiler suitable for burning coal with a low ash melting point as described in claim 5, characterized in that: The front wall water-cooled wall (4) is fixedly connected to the outside of a steel plate (24), a second plug (23) is fixedly connected to the left side of the plug (21), a flat steel (25) is fixedly connected to the bottom of the steel plate (24), and an angle steel (26) is fixedly connected to the bottom of the flat steel (25).

7. A heating boiler suitable for burning coal with a low ash melting point as described in claim 6, characterized in that: The left water-cooled wall (2) is fixedly connected to an additional water-cooled wall (27), the top of the additional water-cooled wall (27) is fixedly connected to a pipe one (28), the top of the additional water-cooled wall (27) is fixedly connected to a pipe two (29), and the bottom of the connecting pipe five (14) is fixedly connected to a pipe three (30).

Images