Shockwave soot blower using combustible gas

Abstract

The present invention provides a shockwave soot blower using combustible gas. The shockwave soot blower using combustible gas comprises a base and a soot blowing assembly; the soot blowing assembly is connected to the base and is movable along the length direction of the base; the soot blowing assembly comprises an air section, a fuel section, a combustion section, and a soot blowing section; the air section is configured for introducing air and is connected to the fuel section, the fuel section is configured for introducing acetylene and air, and the combustion section is connected to the fuel section so as to receive a mixed gas from the fuel section; the combustion section is provided with an ignition component, the ignition component is configured for igniting the mixed gas in the combustion section; the soot blowing section is connected to the combustion section, at least a portion of the soot blowing section is located within an air preheater, and the soot blowing section is provided with a plurality of nozzles so as to inject the combusted mixed gas into the air preheater by means of the soot blowing section. The shockwave soot blower using combustible gas of the present invention offers the advantages of good cleaning performance and high safety.

Description

A shockwave soot blower using combustible gas Technical Field

[0001] This invention relates to the field of sootblower technology, and more specifically, to a shockwave sootblower employing combustible gas. Background Technology

[0002] In related technologies, air preheater soot blowing methods mostly rely on compressed air, steam, or mechanical vibration. These methods often suffer from incomplete cleaning, energy waste, and high maintenance costs when dealing with complex structures (such as long pipes and porous media). Especially in long pipes and porous structures, traditional soot blowing methods cannot guarantee uniform and efficient soot removal, and are prone to incomplete removal of accumulated ash or reduced cleaning effect. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a gas-fired shockwave sootblower, which has the advantages of good cleaning effect and high safety.

[0004] The combustible shockwave soot blower of this invention includes:

[0005] Base;

[0006] A soot blowing assembly, connected to the base and movable along the length of the base, includes an air section, a fuel section, a combustion section, and a soot blowing section.

[0007] The air section is for introducing air and is connected to the fuel section, which is for introducing acetylene and air. The combustion section is connected to the fuel section for receiving the mixed gas in the fuel section. The combustion section has an ignition element for igniting the mixed gas in the combustion section. The soot blowing section is connected to the combustion section, and at least a portion of the soot blowing section is placed inside the air preheater. The soot blowing section has multiple nozzles for injecting the combusted mixed gas into the air preheater through the soot blowing section.

[0008] The combustible shockwave sootblower of this invention can separate the air section, fuel section and combustion section, avoiding interaction between the components during the mixing and ignition process, and reducing the possibility of explosion. In addition, the sootblower can generate a high-energy shock wave in a short time with less energy consumption, thereby improving the cleaning effect on the air preheater.

[0009] In some embodiments, the air section, fuel section, combustion section, and soot blowing section are connected sequentially along the length of the base.

[0010] In some embodiments, the ignition element includes an ignition base and an ignition part, the ignition base being connected to the combustion section, and the ignition part being connected to the ignition base and movable between a first position and a second position.

[0011] In the first position, at least a portion of the ignition unit is placed within the combustion section;

[0012] In the second position, the ignition part is placed inside the ignition base.

[0013] In some embodiments, the ignition base has a cooling cavity, and in the second position, the ignition part is placed inside the cooling cavity.

[0014] In some embodiments, the ignition element further includes a cooling section connected to the cooling chamber so as to allow cooling gas to be introduced into the cooling chamber.

[0015] In some embodiments, the ignition element further includes a sealing assembly, wherein an ignition port is formed in the side wall of the combustion section, and the sealing assembly has an open state and a sealed state.

[0016] In the open state, the ignition part penetrates the sealing assembly and is placed inside the combustion section;

[0017] In the blocked state, the blocking assembly is used to block the ignition port and the ignition part is placed inside the cooling chamber.

[0018] In some embodiments, the sealing assembly includes a sealing member and an elastic member, the sealing member being connected to the elastic member and arranged adjacent to the ignition port. In the open state, the sealing member moves toward the elastic member to communicate the cooling chamber with the combustion section. In the sealed state, the sealing member abuts against the wall of the cooling chamber to block the ignition port.

[0019] In some embodiments, there are multiple sealing elements, which are arranged at circumferential intervals along the ignition portion.

[0020] In some embodiments, the cross-sectional area of ​​the sealing member gradually decreases along the direction from the elastic member to the sealing member.

[0021] In some embodiments of the present invention, the combustible shockwave soot blower further includes a moving component, the moving component including a fixed base, a moving base and a moving drive, the moving base being connected to the base and the fixed base, and the moving drive being connected to the moving base for driving the moving base to move on the fixed base. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the structure of a gas-fired shock wave soot blower according to an embodiment of the present invention.

[0023] Figure 2 is a partial structural diagram of a gas-fired shockwave soot blower according to an embodiment of the present invention.

[0024] Figure 3 is an enlarged schematic diagram of A shown in Figure 1 (the sealing component is in the open state).

[0025] Figure 4 is a schematic diagram of the sealing assembly of a combustible shock wave soot blower in the sealing state according to an embodiment of the present invention.

[0026] Figure label:

[0027] 1. Base

[0028] 2. Soot blowing assembly; 21. Air section; 22. Fuel section; 23. Combustion section; 24. Soot blowing section; 241. Nozzle.

[0029] 3. Ignition component; 31. Ignition base; 311. Cooling chamber; 32. Ignition section; 33. Cooling section; 34. Sealing assembly; 341. Sealing component; 342. Elastic component.

[0030] 4. Movable component; 41. Fixed base; 42. Movable base. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] As shown in Figures 1-4, the combustible shockwave sootblower of this embodiment includes a base 1 and a sootblowing assembly 2. The sootblowing assembly 2 is connected to the base 1 and is movable along the length of the base 1 (left-right direction in Figure 1). The sootblowing assembly 2 includes an air section 21, a fuel section 22, a combustion section 23, and a sootblowing section 24. The air section 21 is used to introduce air and is connected to the fuel section 22. The fuel section 22 is used to introduce acetylene and air. The combustion section 23 is connected to the fuel section 22 to receive the mixed gas in the fuel section 22. The combustion section 23 has an ignition element 3 for igniting the mixed gas in the combustion section 23. The sootblowing section 24 is connected to the combustion section 23. At least a portion of the sootblowing section 24 is placed inside an air preheater. The sootblowing section 24 has multiple nozzles 241 to spray the combusted mixed gas into the air preheater through the sootblowing section 24.

[0033] Specifically, as shown in Figures 1 and 2, the air section 21 is provided with an air inlet to allow air to be introduced into it. The fuel section 22 is provided with a fuel inlet to allow combustible gas to be introduced into it. The fuel section 22 is connected to the air section 21 so that the air section 21 can introduce collected air into the fuel section 22 and mix it with the combustible gas inside. The mixed combustible gas is then introduced into the combustion section 23 so that it can be ignited by the ignition element 3. The resulting shock wave is discharged into the air preheater through the soot blowing section 24 to achieve soot blowing and cleaning functions.

[0034] Understandably, the separate arrangement of the air section 21, fuel section 22, and combustion section 23 allows for thorough mixing of air and fuel within their respective sections. This ensures that the gas mixture reaches its optimal mixing ratio before entering the combustion section 23, which improves combustion efficiency and allows for more complete combustion of the fuel. Furthermore, this separate arrangement allows for individual control of air and fuel flow rates, enabling more precise adjustment of combustion parameters such as the excess air coefficient and oxygen concentration, thereby optimizing the combustion process and reducing pollutant emissions.

[0035] It should be noted that the combustible gas can be acetylene, natural gas, coal gas, liquefied petroleum gas, or other combustible gases. Preferably, the combustible gas is acetylene.

[0036] In other words, the combustible shockwave sootblower of this embodiment of the invention can separate the air section 21, fuel section 22, and combustion section 23, avoiding interaction between the components during the mixing and ignition process, and reducing the possibility of explosion. In addition, the air preheater is cleaned by the mixture of ignited fuel and air, and the sootblower can generate a high-energy shockwave in a short time with less energy consumption, thereby improving the cleaning effect on the air preheater.

[0037] Preferably, the air section 21, fuel section 22, combustion section 23, and soot blowing section 24 are connected sequentially along the length of the base 1. It is understood that the separation of these sections effectively reduces the risk of fuel leaks or improper operation, because even if a leak occurs in the fuel section 22, it will not immediately affect the air section 21 and combustion section 23. When maintenance is required on a specific section, it can be operated independently without affecting the other sections.

[0038] In some embodiments, the ignition element 3 includes an ignition base 31 and an ignition part 32. The ignition base 31 is connected to the combustion section 23, and the ignition part 32 is connected to the ignition base 31 and is movable between a first position and a second position. In the first position, at least a portion of the ignition part 32 is placed inside the combustion section 23; in the second position, the ignition part 32 is placed inside the ignition base 31.

[0039] As can be understood, as shown in Figures 1 and 2, the ignition base 31 is connected to the combustion section 23, serving as a support structure for the ignition element 3, providing stability and fixing the ignition part 32. The ignition part 32 is connected to the ignition base 31 and can move between a first position and a second position.

[0040] When the ignition part 32 is in the first position, at least a portion of the ignition part 32 (i.e., the tip of the ignition part 32) is placed inside the combustion section 23 to ignite the gas mixture inside the combustion section 23. When the ignition part 32 is in the second position, the ignition part 32 is placed inside the ignition base 31, which is typically used for protection, maintenance, or transportation of the ignition part 32. In other words, the tip of the ignition part 32 is inserted into the combustion section 23 only during ignition operations, and after the ignition operation is completed, the ignition part 32 retracts into the ignition base 31 to prevent localized overheating of the ignition part 32 from igniting the gas mixture subsequently introduced into the combustion section 23.

[0041] Furthermore, when maintenance or replacement of the ignition unit 32 is required, it can be moved to a second position, facilitating maintenance work and reducing maintenance difficulty. The mobility of the ignition unit 32 provides operational flexibility, allowing the ignition position to be adjusted as needed to adapt to different combustion conditions. When not in operation, the ignition unit 32 is placed inside the ignition base 31, reducing the risk of ignition accidents due to misoperation.

[0042] In some embodiments, the ignition base 31 has a cooling cavity 311, and in a second position, the ignition part 32 is placed inside the cooling cavity 311.

[0043] As can be understood, as shown in Figures 1 and 2, the ignition base 31 has a cooling chamber 311 structure for cooling the ignition unit 32 when it is not in operation or in the second position. The cooling chamber 311 is located inside the ignition base 31 and can be connected to a cooling system to cool the ignition unit 32. When the ignition unit 32 is in the second position, it is placed inside the cooling chamber 311 to protect and cool it.

[0044] In other words, when the ignition unit 32 is not in operation, placing it in the cooling chamber 311 protects it from high temperatures, dust, or other environmental factors, extending its service life. The cooling chamber 311 typically contains a cooling medium (such as water, air, or a special coolant) that effectively lowers the temperature of the ignition unit 32, preventing damage caused by prolonged exposure to high temperatures. Cooling the ignition unit 32 when it is not in operation reduces potential safety risks caused by excessively high temperatures, such as fire or explosion.

[0045] Optionally, the ignition element 3 also includes a cooling section 33, which is connected to the cooling chamber 311 so that cooling gas can be introduced into the cooling chamber 311.

[0046] It is understood that the cooling section 33 can be used to introduce cooling gas into the cooling chamber 311 for cooling the ignition section 32. The cooling gas can be non-flammable gas such as air, nitrogen, or carbon dioxide. Of course, a mixture of multiple gases can also be used to achieve a specific cooling effect, such as a mixture of air and nitrogen.

[0047] In some embodiments, the ignition element 3 further includes a blocking component 34, with an ignition port opened on the side wall of the combustion section 23. The blocking component 34 has an open state and a blocked state. In the open state, the ignition part 32 passes through the blocking component 34 and is placed inside the combustion section 23. In the blocked state, the blocking component 34 is used to block the ignition port and the ignition part 32 is placed inside the cooling chamber 311.

[0048] Specifically, as shown in Figures 1-4, the sealing assembly 34 is located at the ignition port on the side wall of the combustion section 23, and has two states: an open state and a sealed state. In the open state, the ignition part 32 can sequentially penetrate the sealing assembly 34 and the ignition port into the combustion section 23 to ignite the gas mixture. In the sealed state, the sealing assembly 34 covers and seals the ignition port, preventing gas leakage or external substances from entering the combustion section 23.

[0049] Understandably, the ignition port is located on the side wall of the combustion section 23 for the entry of the ignition unit 32 and the ignition of the gas mixture. When the sealing assembly 34 is in the open state, the ignition unit 32 can enter the combustion section 23 through the sealing assembly 34 to ignite; while when the sealing assembly 34 is in the sealed state, the ignition unit 32 is placed in the cooling chamber 311.

[0050] In other words, when the sealing assembly 34 is in the sealing state, it can effectively prevent gas leakage and the entry of external substances into the combustion section 23, thereby improving the safety of the system. Furthermore, by controlling the state of the sealing assembly 34, the position of the ignition unit 32 can be flexibly controlled, making the ignition process more controllable. In the sealing state, the ignition unit 32 is placed inside the cooling chamber 311, which not only cools the ignition unit 32 but also protects it from damage by the external environment.

[0051] In some embodiments, the blocking assembly 34 includes a blocking member 341 and an elastic member 342. The blocking member 341 is connected to the elastic member 342 and arranged adjacent to the ignition port. In the open state, the blocking member 341 moves toward the elastic member 342 to make the cooling chamber 311 communicate with the combustion section 23. In the blocked state, the blocking member 341 abuts against the wall of the cooling chamber 311 to block the ignition port.

[0052] Specifically, as shown in Figures 1-4, the sealing element 341 is connected to the elastic element 342 and is located at the front end of the sealing assembly 34 so that it can directly act on the ignition port. The elastic element 342 provides elasticity to the sealing element 341, allowing the sealing element 341 to move between the open and sealed states. The elastic element 342 can be a spring, a rubber diaphragm, or other elastic material or structure.

[0053] As can be understood, as shown in the figure, the sealing member 341 is placed inside the cooling chamber 311, and the lower side wall of the sealing member 341 abuts against the upper end of the ignition part 32. The cooling chamber 311 is also provided with an ignition drive member, the output part of which is connected to the ignition part 32 so as to drive the ignition part 32 to move in the vertical direction.

[0054] In other words, the ignition part 32 is located inside the cooling chamber 311, and the sealing member 341 can block the ignition port under the action of the elastic member 342. Activating the ignition drive causes the ignition part 32 to move from bottom to top, i.e., the ignition part 32 presses against the sealing member 341, causing the sealing member 341 to overcome the elasticity of the spring and move towards the elastic member 342, thereby opening the ignition port so that the upper end of the ignition part 32 can extend into the combustion section 23. Conversely, using the ignition drive to move the ignition part 32 from top to bottom, placing the ignition part 32 inside the cooling chamber 311, the sealing member 341, under the elastic action of the elastic member 342, blocks the ignition port again.

[0055] Therefore, the blocking component 34 can quickly switch from the blocking state to the opening state under the driving action of the ignition drive component. Furthermore, when the ignition drive component drives the ignition part 32 into the cooling chamber 311, the blocking component 341 can quickly block the ignition port, thereby improving the system's response speed and operational flexibility.

[0056] Preferably, there are multiple sealing elements 341, and the multiple sealing elements 341 are arranged at intervals along the circumference of the ignition part 32.

[0057] In some embodiments, the cross-sectional area of ​​the sealing member 341 gradually decreases along the direction from the elastic member 342 to the sealing member 341. That is, the sealing member 341 is wedge-shaped, and the ignition part 32 can contact the inclined surface of the wedge-shaped surface of the sealing member 341, thereby facilitating the ignition part 32 to squeeze the sealing member 341, thereby allowing the sealing member 341 to switch between an open state and a sealed state.

[0058] In some embodiments, the combustible shockwave soot blower of the present invention further includes a moving component 4. The moving component 4 includes a fixed base 41, a moving base 42 and a moving drive. The moving base 42 is connected to the base 1 and the fixed base 41. The moving drive is connected to the moving base 42 to drive the moving base 42 to move on the fixed base 41.

[0059] As can be understood, as shown in Figures 1 and 2, the fixed base 41, as the fixed part of the movable component 4, is connected to the base 1, providing a fixed base for the movable base 42. The movable base 42 is the part connecting the base 1 and the fixed base 41, can move on the fixed base 41, and is connected to the soot blowing component 2. The moving drive component is connected to the movable base 42 and is responsible for driving the movable base 42 to move on the fixed base 41. The moving drive component can be a mechanical device (such as a gear, chain, or track), a hydraulic system, or an electric device, etc.

[0060] In other words, the moving component 4 allows the sootblower to move along a specific direction on the fixed base 41, thereby enabling the cleaning of different areas of the air preheater. Furthermore, the design of the moving component 4 allows the sootblower to adapt to air preheaters of different sizes and shapes, and to perform cleaning operations in different locations. Thus, through the movement of the sootblower by the moving component 4, the sootblower can more effectively cover all areas of the air preheater, improving cleaning efficiency and reducing dust accumulation.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A shock wave soot blower using a combustible gas, characterized by, include: Base; A soot blowing assembly, connected to the base and movable along the length of the base, includes an air section, a fuel section, a combustion section, and a soot blowing section. The air section is for introducing air and is connected to the fuel section, which is for introducing acetylene and air. The combustion section is connected to the fuel section for receiving the mixed gas in the fuel section. The combustion section has an ignition element for igniting the mixed gas in the combustion section. The soot blowing section is connected to the combustion section, and at least a portion of the soot blowing section is placed inside the air preheater. The soot blowing section has multiple nozzles for injecting the combusted mixed gas into the air preheater through the soot blowing section.

2. The shockwave sootblower employing a combustible gas according to claim 1, characterized in that, The air section, fuel section, combustion section, and soot blowing section are connected sequentially along the length of the base.

3. The shockwave sootblower employing a combustible gas according to claim 2, characterized in that, The ignition element includes an ignition base and an ignition part. The ignition base is connected to the combustion section, and the ignition part is connected to the ignition base and is movable between a first position and a second position. In the first position, at least a portion of the ignition unit is placed within the combustion section; In the second position, the ignition part is placed inside the ignition base.

4. The shockwave sootblower employing a combustible gas according to claim 3, characterized in that, The ignition base has a cooling chamber, and in the second position, the ignition part is placed inside the cooling chamber.

5. The shockwave sootblower employing a combustible gas according to claim 4, characterized in that, The ignition element also includes a cooling section, which is connected to the cooling chamber so that cooling gas can be introduced into the cooling chamber.

6. The shockwave sootblower employing a combustible gas of claim 5, wherein, The ignition element also includes a sealing assembly, wherein an ignition port is provided on the side wall of the combustion section, and the sealing assembly has an open state and a sealed state. In the open state, the ignition part penetrates the sealing assembly and is placed inside the combustion section; In the blocked state, the blocking assembly is used to block the ignition port and the ignition part is placed inside the cooling chamber.

7. The shockwave sootblower employing a combustible gas according to claim 6, characterized in that, The sealing assembly includes a sealing element and an elastic element. The sealing element is connected to the elastic element and arranged adjacent to the ignition port. In the open state, the sealing element moves toward the elastic element to make the cooling chamber communicate with the combustion section. In the sealed state, the sealing element abuts against the wall of the cooling chamber to block the ignition port.

8. The shockwave sootblower employing a combustible gas according to claim 7, characterized in that, There are multiple sealing elements, which are arranged at intervals along the circumference of the ignition part.

9. The shockwave sootblower employing a combustible gas of claim 8, wherein, The cross-sectional area of ​​the sealing member gradually decreases along the direction from the elastic member to the sealing member.

10. The shockwave sootblower employing a combustible gas of any of claims 1-9, wherein, It also includes a moving component, which includes a fixed base, a moving base, and a moving drive. The moving base is connected to the base and the fixed base, and the moving drive is connected to the moving base to drive the moving base to move on the fixed base.

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