Boiler with boiler furnace outlet structure with furnace arch
By adopting wear-resistant and heat-resistant composite flame angle in the boiler, the wear and deformation of the flame angle under the impact of high heat and flue gas particles is solved, which improves the convection heat transfer effect of flue gas and ensures the stability of the boiler.
Patent Information
- Application Number
- CN202420478705.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-13
AI Technical Summary
The existing boiler flame angle is prone to wear and deform under the impact of high heat and flue gas particles, resulting in a decrease in the convection heat transfer effect of flue gas and may even lead to boiler damage.
Wear-resistant and heat-resistant composite flame angles are adopted, including ceramic refractory fiber heat-resistant layer and multi-layer wear-resistant layer (such as silicon carbide, alumina and boron nitride) to prevent wear and high-temperature deformation of flue gas particles.
It effectively prevents wear and deformation of the flame angle, maintains the lateral flue effect of the flue gas on the screen superheater, improves the convection heat transfer effect, and avoids boiler damage.
Smart Images
Figure CN222616875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boilers, in particular to a boiler with a boiler furnace outlet structure having a flame folding angle. Background Art
[0002] Boiler is an energy conversion device. The energy input to the boiler includes chemical energy in the fuel, electrical energy, and steam, high-temperature water or organic heat carrier with certain thermal energy output by the boiler. The original meaning of pot refers to a water container heated on fire, and furnace refers to a place where fuel is burned. The boiler includes two parts: pot and furnace. The hot water or steam produced in the boiler can directly provide the required thermal energy for industrial production and people's lives, or it can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. The boiler that provides hot water is called a hot water boiler, which is mainly used for life and has a small number of applications in industrial production. The boiler that produces steam is called a steam boiler, often referred to as a boiler, and is mostly used in thermal power plants, ships, locomotives and industrial and mining enterprises. Some boilers with an inverted "U" shape have a triangular protrusion extending into the furnace chamber on the upper part of the rear wall of the combustion chamber of some boilers with an inverted "U" shape. The protrusion is called a flame folding angle, and because its shape resembles a human nose, it is also called a nose. The flame deflection angle can increase the length of the horizontal flue. Since the flame deflection angle extends into the furnace, it is equivalent to increasing the length of the horizontal flue by one flame deflection angle. In this way, more superheater heating surfaces can be arranged without increasing the depth of the boiler. The heat transfer effect of the screen superheater can also be improved, so that the flue gas changes from longitudinal and transverse scouring of the screen superheater when there is no flame deflection angle to transverse scouring, thereby improving the convective heat transfer effect. Finally, the fullness of the flue gas in the furnace can be increased, and the distribution of the flue gas along the height direction of the combustion chamber tends to be uniform, thereby increasing the heat absorption of the water-cooled wall and the ceiling superheater in the upper front part of the furnace.
[0003] However, the existing boiler flame deflection angle is directly impacted by the high heat of the flame and the impact of particles in the flue gas, which will cause wear and even deformation on the surface of the flame deflection angle. As a result, the flame deflection angle cannot effectively control the lateral scouring of the flue gas on the screen-type superheater, resulting in a decrease in the convective heat transfer effect, and may even cause the boiler flame deflection angle to be damaged and cracked, resulting in damage to the entire boiler.
[0004] To this end, we propose a boiler with a boiler furnace outlet structure with a flame folding angle. Utility Model Content
[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a boiler with a boiler furnace outlet structure with a flame folding angle.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a boiler with a boiler furnace outlet structure with a flame deflection angle, comprising a boiler furnace, a cold ash hopper is fixedly installed at the bottom of the boiler furnace, a wear-resistant and heat-proof composite flame deflection angle is arranged at the upper right end of the inner wall of the boiler furnace, a water-cooled wall is fixedly installed at the upper end of the outer wall of the boiler furnace, and the outer wall of the water-cooled wall is fixedly connected to the right side wall of the wear-resistant and heat-proof composite flame deflection angle, a burner is fixedly installed at the lower end of the outer wall of the boiler furnace, a flame outlet is opened at the lower end of the inner wall of the boiler furnace at the burner, a burnout air outlet is opened at the upper end of the inner wall of the boiler furnace at the flame outlet, a screen-type superheater is fixedly installed at the top of the inner wall of the boiler furnace, a ceiling pipe superheater is fixedly installed at the top of the boiler furnace, the wear-resistant and heat-proof composite flame deflection angle comprises a ceramic refractory fiber heat-proof layer, and the outer wall of the ceramic refractory fiber heat-proof layer is fixedly connected to the upper right end of the inner wall of the boiler furnace, and the right side wall of the ceramic refractory fiber heat-proof layer is fixedly connected to the inner wall of the water-cooled wall.
[0007] Preferably, a boron nitride wear-resistant layer is fixedly mounted on the left wall surface of the ceramic refractory fiber heat-resistant layer.
[0008] Preferably, the outer wall of the boron nitride wear-resistant layer is fixedly connected to the upper right end of the inner wall of the boiler furnace.
[0009] Preferably, an aluminum oxide wear-resistant layer is fixedly mounted on the left wall surface of the boron nitride wear-resistant layer.
[0010] Preferably, the outer wall of the alumina wear-resistant layer is fixedly connected to the upper right end of the inner wall of the boiler furnace.
[0011] Preferably, a silicon carbide wear-resistant layer is fixedly mounted on the left wall surface of the aluminum oxide wear-resistant layer.
[0012] Preferably, the outer wall of the silicon carbide wear-resistant layer is fixedly connected to the upper right end of the inner wall of the boiler furnace.
[0013] Beneficial Effects
[0014] The utility model provides a boiler with a boiler furnace outlet structure with a flame folding angle.
[0015] Beneficial effects:
[0016] (1) The boiler with a boiler furnace outlet structure with a flame folding angle is provided with a wear-resistant and heat-proof composite flame folding angle. The three wear-resistant layers of silicon carbide wear-resistant layer, aluminum oxide wear-resistant layer and boron nitride wear-resistant layer on the wear-resistant and heat-proof composite flame folding angle can effectively prevent particles in the flue gas from causing wear to the wear-resistant and heat-proof composite flame folding angle. The ceramic refractory fiber heat-proof layer on the wear-resistant and heat-proof composite flame folding angle has good heat resistance and can avoid high-temperature deformation of the wear-resistant and heat-proof composite flame folding angle, and avoid the wear-resistant and heat-proof composite flame folding angle from being unable to effectively control the lateral scouring of the flue gas on the screen-type superheater due to deformation and damage.
[0017] (2) The boiler with a boiler furnace outlet structure with a flame deflection angle is provided with a water-cooled wall. The water-cooled wall is fixedly connected to the right wall surface of the wear-resistant and heat-resistant composite flame deflection angle, which can effectively increase the water cooling area of the water-cooled wall. At the same time, it can also increase the heating surface of the platen superheater and the ceiling tube superheater, thereby improving the working effects of the water-cooled wall, the platen superheater and the ceiling tube superheater.
[0018] (3) The boiler with a boiler furnace outlet structure with a flame folding angle has good wear resistance and certain high temperature resistance by setting a silicon carbide wear-resistant layer, an aluminum oxide wear-resistant layer and a boron nitride wear-resistant layer, thereby further avoiding deformation of the wear-resistant and heat-resistant composite flame folding angle in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the front side of the utility model;
[0020] Figure 2 It is a perspective view of the internal structure of the utility model;
[0021] Figure 3 It is a cross-sectional view of the internal structure of the wear-resistant and heat-resistant composite flame-folding angle of the utility model.
[0022] Legend: 10. Boiler furnace; 11. Cold ash hopper; 12. Wear-resistant and heat-resistant composite flame folding angle; 13. Water-cooled wall; 14. Burner; 15. Flame nozzle; 16. Burnout air outlet; 17. Screen superheater; 18. Ceiling pipe superheater; 19. Silicon carbide wear-resistant layer; 20. Alumina wear-resistant layer; 21. Boron nitride wear-resistant layer; 22. Ceramic refractory fiber heat protection layer. DETAILED DESCRIPTION
[0023] Embodiment 1: A boiler having a boiler furnace 10 outlet structure with a flame folding angle, such as Figure 1As shown, the boiler furnace 10 includes a cold ash hopper 11 fixedly installed at the bottom of the boiler furnace 10, a wear-resistant and heat-resistant composite flame-folding angle 12 is arranged at the upper right end of the inner wall of the boiler furnace 10, a water-cooled wall 13 is fixedly installed at the upper end of the outer wall of the boiler furnace 10, and the outer wall of the water-cooled wall 13 is fixedly connected to the right wall surface of the wear-resistant and heat-resistant composite flame-folding angle 12, and a burner 14 is fixedly installed at the lower end of the outer wall of the boiler furnace 10. By setting the wear-resistant and heat-resistant composite flame-folding angle 12, the wear-resistant and heat-resistant composite flame-folding angle 12 is carbonized. The three wear-resistant layers of silicon wear-resistant layer 19, aluminum oxide wear-resistant layer 20 and boron nitride wear-resistant layer 21 can effectively prevent the particles in the flue gas from causing wear to the wear-resistant and heat-proof composite flame-folding angle 12. The ceramic refractory fiber heat-proof layer 22 on the wear-resistant and heat-proof composite flame-folding angle 12 has good heat resistance, which can avoid the high-temperature deformation of the wear-resistant and heat-proof composite flame-folding angle 12, and avoid the wear-resistant and heat-proof composite flame-folding angle 12 from being unable to effectively control the lateral scouring of the flue gas on the screen-type superheater 17 due to deformation and damage.
[0024] Embodiment 2: Based on Embodiment 1, Figure 2 As shown, a flame vent 15 is provided at the lower end of the inner wall of the boiler furnace 10 at the burner 14, a burnout air port 16 is provided at the upper end of the inner wall of the boiler furnace 10 at the flame vent 15, a screen-type superheater 17 is fixedly installed at the top of the inner wall of the boiler furnace 10, and a ceiling pipe superheater 18 is fixedly installed at the top of the boiler furnace 10. By providing a water-cooled wall 13, the water-cooled wall 13 is fixedly connected to the right side wall of the wear-resistant and heat-proof composite flame-folding angle 12, which can effectively increase the water cooling area of the water-cooled wall 13, and at the same time can also increase the heating surface of the screen-type superheater 17 and the ceiling pipe superheater 18, thereby improving the working effects of the water-cooled wall 13, the screen-type superheater 17 and the ceiling pipe superheater 18.
[0025] Embodiment 3: Based on Embodiment 1 and Embodiment 2, Figure 3As shown, the wear-resistant and heat-resistant composite flame folding angle 12 includes a ceramic refractory fiber heat-resistant layer 22, and the outer wall of the ceramic refractory fiber heat-resistant layer 22 is fixedly connected to the upper right end of the inner wall of the boiler furnace 10, the right side wall of the ceramic refractory fiber heat-resistant layer 22 is fixedly connected to the inner wall of the water-cooled wall 13, and the left side wall of the ceramic refractory fiber heat-resistant layer 22 is fixedly installed with a boron nitride wear-resistant layer 21, and the outer wall of the boron nitride wear-resistant layer 21 is fixedly connected to the upper right end of the inner wall of the boiler furnace 10, and the left side wall of the boron nitride wear-resistant layer 21 is fixedly installed with an aluminum oxide wear-resistant The aluminum oxide wear-resistant layer 20 has a wear-resistant layer 19, and the outer wall of the aluminum oxide wear-resistant layer 20 is fixedly connected to the upper right end of the inner wall of the boiler furnace 10. The left wall of the aluminum oxide wear-resistant layer 20 is fixedly installed with a silicon carbide wear-resistant layer 19, and the outer wall of the silicon carbide wear-resistant layer 19 is fixedly connected to the upper right end of the inner wall of the boiler furnace 10. By arranging the silicon carbide wear-resistant layer 19, the aluminum oxide wear-resistant layer 20 and the boron nitride wear-resistant layer 21, not only the wear resistance is good, but also the high temperature resistance is certain, which further avoids the deformation of the wear-resistant and heat-resistant composite flame-folding angle 12 in a high temperature environment.
[0026] The working principle of the utility model is as follows: by turning on the switch of the burner 14, the burner 14 starts to spray flames into the boiler furnace 10 through the flame nozzle 15, and the burnout air port 16 transports the outside air into the boiler furnace 10 to promote rapid and complete combustion in the boiler furnace 10. The heat generated by the combustion is absorbed by the water-cooled wall 13, and the flue gas and heat generated by the combustion are affected by the wear-resistant and heat-proof composite flame-breaking angle 12 to horizontally flush the screen-type superheater 17, thereby improving the convective heat transfer effect of the screen-type superheater 17. When flushing the screen-type superheater 17, the particles in the flue gas are affected by the three wear-resistant layers of silicon carbide wear-resistant layer 19, aluminum oxide wear-resistant layer 20 and boron nitride wear-resistant layer 21 on the wear-resistant and heat-proof composite flame-breaking angle 12, thereby avoiding wear on the wear-resistant and heat-proof composite flame-breaking angle 12, and the heat in the flue gas will not cause deformation and damage to the material of the wear-resistant and heat-proof composite flame-breaking angle 12 due to the material of the ceramic refractory fiber heat-proof layer 22.
[0027] The above shows and describes the basic principle and main features of the utility model and the 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 for explaining the principle of 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 boiler having a boiler furnace outlet structure with a flame bending angle, comprising a boiler furnace (10), characterized in that: A cold ash hopper (11) is fixedly installed at the bottom of the boiler furnace (10), a wear-resistant and heat-resistant composite flame-folding angle (12) is arranged at the upper right end of the inner wall of the boiler furnace (10), a water-cooled wall (13) is fixedly installed at the upper end of the outer wall of the boiler furnace (10), and the outer wall of the water-cooled wall (13) is fixedly connected to the right side wall of the wear-resistant and heat-resistant composite flame-folding angle (12), a burner (14) is fixedly installed at the lower end of the outer wall of the boiler furnace (10), and a flame-spraying port (15) is provided at the lower end of the inner wall of the boiler furnace (10) at the burner (14), and the boiler furnace (10) is provided with a heat-resistant and heat-resistant composite flame-folding angle (12). 0) is provided with a burnout air outlet (16) at the upper end of the flame vent (15), a screen-type superheater (17) is fixedly installed on the top of the inner wall of the boiler furnace (10), a ceiling pipe superheater (18) is fixedly installed on the top of the boiler furnace (10), the wear-resistant and heat-resistant composite flame-folding angle (12) includes a ceramic refractory fiber heat-proof layer (22), and the outer wall of the ceramic refractory fiber heat-proof layer (22) is fixedly connected to the upper right end of the inner wall of the boiler furnace (10), and the right side wall of the ceramic refractory fiber heat-proof layer (22) is fixedly connected to the inner wall of the water-cooled wall (13).
2. The boiler with a boiler furnace outlet structure with a flame folding angle according to claim 1, characterized in that: A boron nitride wear-resistant layer (21) is fixedly mounted on the left wall surface of the ceramic refractory fiber heat-resistant layer (22).
3. The boiler with a boiler furnace outlet structure with a flame folding angle according to claim 2, characterized in that: The outer wall of the boron nitride wear-resistant layer (21) is fixedly connected to the upper right end of the inner wall of the boiler furnace (10).
4. The boiler with a boiler furnace outlet structure with a flame folding angle according to claim 2, characterized in that: An aluminum oxide wear-resistant layer (20) is fixedly mounted on the left wall surface of the boron nitride wear-resistant layer (21).
5. The boiler with a boiler furnace outlet structure with a flame folding angle according to claim 4, characterized in that: The outer wall of the alumina wear-resistant layer (20) is fixedly connected to the upper right end of the inner wall of the boiler furnace (10).
6. The boiler with a boiler furnace outlet structure with a flame folding angle according to claim 4, characterized in that: A silicon carbide wear-resistant layer (19) is fixedly mounted on the left wall surface of the aluminum oxide wear-resistant layer (20).
7. The boiler with a boiler furnace outlet structure with a flame folding angle according to claim 6, characterized in that: The outer wall of the silicon carbide wear-resistant layer (19) is fixedly connected to the upper right end of the inner wall of the boiler furnace (10).