Shock wave soot blower adopting combustible gas

Abstract

The shock wave soot blower adopting the flammable gas comprises a base and a soot blowing assembly, the soot blowing assembly is connected with the base and can move in 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 used for introducing air and is connected with the fuel section, and the combustion section is connected with the soot blowing section. The fuel section is used for introducing acetylene and air, the combustion section is connected with the fuel section so as to be used for receiving mixed gas in the fuel section, the combustion section is provided with an ignition part, the ignition part is used for igniting the mixed gas in the combustion section, the soot blowing section is connected with the combustion section, at least part of the soot blowing section is arranged in the air pre-heater, and the soot blowing section is provided with a plurality of nozzles. Therefore, the combusted mixed gas is sprayed into the air pre-heater through the soot blowing section. The shock wave soot blower adopting the combustible gas has the advantages of being good in cleaning effect and high in safety.

Description

Technical Field

[0001] The invention relates to the technical field of soot blowers, and in particular to a shock wave soot blower using combustible gas. Background Art

[0002] In the related technologies, most air preheater soot blowing methods rely on compressed air, steam or mechanical vibration. These methods often have problems such as 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 are difficult to ensure uniform and efficient soot cleaning effects, and it is easy to fail to completely remove the accumulated soot or the cleaning effect is attenuated. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, an embodiment of the present invention provides a shock wave soot blower using combustible gas, which has the advantages of good cleaning effect and high safety.

[0004] The shock wave soot blower using combustible gas according to the embodiment of the present invention comprises:

[0005] Base;

[0006] A sootblowing assembly is connected to the base and is movable along the length direction of the base. The sootblowing assembly includes an air section, a fuel section, a combustion section and a sootblowing section.

[0007] The air section is used for introducing air and is connected to the fuel section. The fuel section is used for introducing acetylene and air. The combustion section is connected to the fuel section so as to receive the mixed gas in the fuel section. The combustion section has an ignition component, and the ignition component is used to ignite the mixed gas in the combustion section. The soot blowing section is connected to the combustion section. At least part of the soot blowing section is placed in the air preheater. The soot blowing section has a plurality of nozzles so as to inject the combusted mixed gas into the air preheater through the soot blowing section.

[0008] The shock wave soot blower using combustible gas in the embodiment of the present invention can separate the air section, the fuel section and the combustion section, avoiding the interaction between the individual components during the mixing and ignition steps, and reducing the possibility of explosion. In addition, the air preheater is cleaned by using the mixture of ignited fuel and air, so that the soot blower can generate high-energy shock waves in a short time with less energy consumption, thereby improving the cleaning effect of the air preheater.

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

[0010] In some embodiments, the ignition member includes an ignition base and an ignition portion, wherein the ignition base is connected to the combustion section, and the ignition portion is connected to the ignition base and is movable between a first position and a second position.

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

[0012] In the second position, the ignition portion is disposed within the ignition base.

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

[0014] In some embodiments, the ignition component further includes a cooling portion, and the cooling portion is connected to the cooling cavity so as to allow cooling gas to flow into the cooling cavity.

[0015] In some embodiments, the ignition component further includes a blocking component, the side wall of the combustion section is provided with an ignition port, and the blocking component has an open state and a blocked state.

[0016] In the open state, the ignition portion penetrates the blocking component and is placed in the combustion section;

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

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

[0019] In some embodiments, there are a plurality of blocking members, and the plurality of blocking members are arranged at intervals along the circumference of the ignition portion.

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

[0021] In some embodiments, the shock wave soot blower using combustible gas in an embodiment of the present invention also includes a moving component, which includes a fixed seat, a moving seat and a moving drive component, the moving seat is connected to the base and the fixed seat, and the moving drive component is connected to the moving seat to drive the moving seat to move on the fixed seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic structural diagram of a shock wave soot blower using combustible gas according to an embodiment of the present invention.

[0023] Figure 2 It is a partial structural schematic diagram of a shock wave soot blower using combustible gas according to an embodiment of the present invention.

[0024] Figure 3 yes Figure 1 An enlarged schematic diagram of A shown in FIG. 1 (the blocking component is in the open state).

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

[0026] Reference numerals:

[0027] 1. Base,

[0028] 2. Sootblowing assembly, 21. Air section, 22. Fuel section, 23. Combustion section, 24. Sootblowing section, 241. Nozzle,

[0029] 3. Ignition piece, 31. Ignition base, 311. Cooling chamber, 32. Ignition part, 33. Cooling part, 34. Blocking assembly, 341. Blocking piece, 342. Elastic piece,

[0030] 4. Moving assembly, 41. Fixed seat, 42. Moving seat. DETAILED DESCRIPTION

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

[0032] like Figure 1-Figure 4 As shown, the shock wave soot blower using combustible gas in the embodiment of the present invention comprises a base 1 and a soot blowing assembly 2. The soot blowing assembly 2 is connected to the base 1 and extends along the length direction of the base 1 (such as 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 for introducing air and is connected to the fuel section 22. The fuel section 22 is used for introducing 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, which is used to ignite the mixed gas in the combustion section 23. The sootblowing section 24 is connected to the combustion section 23. At least part of the sootblowing section 24 is placed in the air preheater. The sootblowing section 24 has a plurality of nozzles 241 so as to inject the burned mixed gas into the air preheater through the sootblowing section 24.

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

[0034] It is understandable that the air section 21, the fuel section 22 and the combustion section 23 are arranged in a separated manner, so that the air and the fuel can be fully mixed in their respective sections, ensuring that the mixed gas has reached the optimal mixing ratio before entering the combustion section 23, which is conducive to improving the combustion efficiency and making the fuel burn more fully. In addition, through the separated arrangement, the flow rates of air and fuel can be controlled separately, and the parameters of the combustion process, such as the excess air coefficient and the oxygen concentration, can be adjusted more accurately, thereby optimizing the combustion process and reducing pollutant emissions.

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

[0036] That is to say, the shock wave soot blower using combustible gas in the embodiment of the present invention can separate the air section 21, the fuel section 22, and the combustion section 23, thereby avoiding interaction between the individual components during the mixing and ignition steps, and reducing the possibility of explosion. In addition, the air preheater is cleaned by using the mixture of ignited fuel and air, so that the soot blower can generate high-energy shock waves in a short time with less energy consumption, thereby improving the cleaning effect of the air preheater.

[0037] Preferably, the air section 21, the fuel section 22, the combustion section 23 and the soot blowing section 24 are sequentially connected along the length direction of the base 1. It can be understood that the separation of the various sections can effectively reduce the risks caused by fuel leakage or improper operation, because even if a leak occurs in the fuel section 22, it will not immediately affect the air section 21 and the combustion section 23. When a specific section needs to be maintained, it can be operated separately without affecting other sections.

[0038] In some embodiments, the ignition element 3 includes an ignition base 31 and an ignition portion 32. The ignition base 31 is connected to the combustion section 23. The ignition portion 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 portion 32 is placed in the combustion section 23. In the second position, the ignition portion 32 is placed in the ignition base 31.

[0039] It is understandable that if Figure 1 and Figure 2 As shown, the ignition base 31 is connected to the combustion section 23, serving as a supporting structure of the ignition member 3, providing stability and fixing the ignition portion 32. The ignition portion 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 located at the first position, at least part of the ignition part 32 (i.e., the top of the ignition part 32) is placed in the combustion section 23 to ignite the mixed gas in the combustion section 23. When the ignition part 32 is located at the second position, the ignition part 32 is placed in the ignition base 31, which is usually used for the protection, maintenance or transportation of the ignition part 32. That is to say, when the ignition part 32 is performing the ignition operation, the top of the ignition part 32 is inserted into the combustion section 23, and after the ignition operation is completed, the ignition part 32 will shrink to the inside of the ignition base 31 to avoid the ignition of the mixed gas subsequently introduced into the combustion section 23 due to local overheating of the ignition part 32.

[0041] In addition, when the ignition part 32 needs to be maintained or replaced, it can be moved to the second position, which is convenient for operators to perform maintenance work and reduces the difficulty of maintenance. The mobility of the ignition part 32 provides operational flexibility, and the ignition position can be adjusted as needed to adapt to different combustion conditions. When the ignition part 32 is not in operation, it is placed in the ignition base 31, which can reduce ignition accidents caused by misoperation.

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

[0043] It is understandable that if Figure 1 and Figure 2 As shown, the ignition base 31 has a cooling chamber 311 structure, which is used to cool the ignition part 32 when it is not working or in the second position. The cooling chamber 311 is located inside the ignition base 31 and can be connected to the cooling system to cool the ignition part 32. When the ignition part 32 is in the second position, the ignition part 32 is placed in the cooling chamber 311 to protect the ignition part 32 and cool it.

[0044] That is, when the ignition part 32 is not working, placing it in the cooling chamber 311 can protect the ignition part 32 from high temperature, dust or other environmental factors, thereby extending the service life of the ignition part 32. A cooling medium (such as water, air or special coolant) usually flows in the cooling chamber 311, effectively reducing the temperature of the ignition part 32 and preventing damage caused by long-term high temperature exposure. By cooling the ignition part 32 when it is not working, potential safety risks caused by excessive temperature, such as fire or explosion, can be reduced.

[0045] Optionally, the ignition element 3 further includes a cooling portion 33 , which is connected to the cooling cavity 311 so that cooling gas can flow into the cooling cavity 311 .

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

[0047] In some embodiments, the ignition component 3 also includes a sealing component 34, and an ignition port is opened on the side wall of the combustion section 23. The sealing component 34 has an open state and a closed state. In the open state, the ignition part 32 passes through the sealing component 34 and is placed in the combustion section 23; in the closed state, the sealing component 34 is used to seal the ignition port and the ignition part 32 is placed in the cooling chamber 311.

[0048] Specifically, Figure 1-Figure 4 As shown, the plugging assembly 34 is located at the ignition port of the side wall of the combustion section 23, and has two states: an open state and a blocked state. When the plugging assembly 34 is in the open state, the ignition portion 32 can sequentially penetrate the plugging assembly 34 and the ignition port into the combustion section 23 to ignite the mixed gas. When the plugging assembly 34 is in the blocked state, the plugging assembly 34 can cover and block the ignition port to prevent gas leakage or external substances from entering the combustion section 23.

[0049] It is understandable that the ignition port is provided on the side wall of the combustion section 23 for the ignition part 32 to enter and ignite the mixed gas. When the blocking component 34 is in the open state, the ignition part 32 can enter the combustion section 23 through the blocking component 34 for ignition; and when the blocking component 34 is in the blocked state, the ignition part 32 is placed in the cooling cavity 311.

[0050] That is to say, the blocking component 34 can effectively prevent gas leakage and external substances from entering the combustion section 23 when in the blocking state, thereby improving the safety of the system. In addition, by controlling the state of the blocking component 34, the position of the ignition part 32 can be flexibly controlled, making the ignition process more controllable. In the blocking state, the ignition part 32 is placed in the cooling chamber 311, which not only cools the ignition part 32, but also protects it from damage by the external environment.

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

[0052] Specifically, Figure 1-Figure 4 As shown, the blocking member 341 is connected to the elastic member 342 and is located at the front end of the blocking assembly 34 so as to directly act on the ignition port. The elastic member 342 provides elastic force for the blocking member 341, so that the blocking member 341 can move between the open state and the blocked state. The elastic member 342 can be a spring, a rubber membrane or other elastic materials or structures.

[0053] It is understandable that, as shown in the figure, the blocking member 341 is placed in the cooling cavity 311, and the lower side wall of the blocking member 341 abuts against the upper end of the ignition part 32. An ignition drive member is also provided in the cooling cavity 311, and the output part of the ignition drive member is connected to the ignition part 32 so as to drive the ignition part 32 to move in the up and down direction.

[0054] That is to say, the ignition part 32 is located in the cooling cavity 311, and the blocking member 341 can block the ignition port under the action of the elastic member 342. The ignition drive member is started to move the ignition part 32 from bottom to top, that is, the ignition part 32 squeezes the blocking member 341, so that the blocking member 341 overcomes the elasticity of the spring and moves toward 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, the ignition part 32 is driven to move from top to bottom by the ignition drive member, so that the ignition part 32 is placed in the cooling cavity 311, and the blocking member 341 blocks the ignition port again under the elastic action of the elastic member 342.

[0055] Therefore, the sealing assembly 34 can be quickly switched from a blocked state to an open state under the driving action of the ignition drive component, and when the ignition drive component drives the ignition part 32 into the cooling chamber 311, the sealing component 341 can quickly block the ignition port, thereby improving the response speed and operational flexibility of the system.

[0056] Preferably, there are multiple blocking pieces 341 , and the multiple blocking pieces 341 are arranged at intervals along the circumferential direction of the ignition portion 32 .

[0057] In some embodiments, the cross-sectional area of ​​the blocking member 341 gradually decreases in the direction from the elastic member 342 to the blocking member 341. In other words, the blocking member 341 is wedge-shaped, and the ignition portion 32 can contact the inclined surface of the wedge surface of the blocking member 341, thereby facilitating the ignition portion 32 to squeeze the blocking member 341, so that the blocking member 341 switches between the open state and the blocked state.

[0058] In some embodiments, the shock wave soot blower using combustible gas in an embodiment of the present invention also includes a moving component 4, the moving component 4 includes a fixed seat 41, a moving seat 42 and a moving drive component, the moving seat 42 connects the base 1 and the fixed seat 41, and the moving drive component is connected to the moving seat 42 for driving the moving seat 42 to move on the fixed seat 41.

[0059] It is understandable that if Figure 1 and Figure 2 As shown, the fixed seat 41 is connected to the base 1 as the fixed part of the moving assembly 4, providing a fixed base for the moving seat 42. The moving seat 42 is a part connecting the base 1 and the fixed seat 41, which can move on the fixed seat 41 and is connected to the sootblowing assembly 2. The moving drive is connected to the moving seat 42 and is responsible for driving the moving seat 42 to move on the fixed seat 41. Among them, the moving drive can be a mechanical device (such as a gear, a chain, a track), a hydraulic system or an electric device, etc.

[0060] That is, the moving assembly 4 allows the soot blower to move in a specific direction on the fixed seat 41, so that different areas of the air preheater can be cleaned. In addition, the design of the moving assembly 4 enables the soot blower to adapt to air preheaters (air preheaters) of different sizes and shapes, and to perform cleaning operations at different positions. Therefore, through the moving action of the moving assembly 4 on the soot blower, the soot blower can more effectively cover all areas of the air preheater, improve cleaning efficiency, and reduce dust accumulation.

[0061] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0065] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0066] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A shock wave soot blower using combustible gas, characterized in that: include: Base; A sootblowing assembly is connected to the base and is movable along the length direction of the base. The sootblowing assembly includes an air section, a fuel section, a combustion section and a sootblowing section. The air section is used for introducing air and is connected to the fuel section. The fuel section is used for introducing acetylene and air. The combustion section is connected to the fuel section so as to receive the mixed gas in the fuel section. The combustion section has an ignition component, and the ignition component is used to ignite the mixed gas in the combustion section. The soot blowing section is connected to the combustion section. At least part of the soot blowing section is placed in the air preheater. The soot blowing section has a plurality of nozzles so as to inject the combusted mixed gas into the air preheater through the soot blowing section.

2. The shock wave soot blower using combustible gas according to claim 1, characterized in that: The air section, the fuel section, the combustion section and the soot blowing section are connected in sequence along the length direction of the base.

3. The shock wave soot blower using combustible gas according to claim 2, characterized in that: The ignition element comprises an ignition base and an ignition portion, wherein the ignition base is connected to the combustion section, and the ignition portion 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 portion is disposed within the combustion section; In the second position, the ignition portion is disposed within the ignition base.

4. The shock wave soot blower using combustible gas according to claim 3, characterized in that: The ignition base has a cooling cavity, and in the second position, the ignition part is placed in the cooling cavity.

5. The shock wave soot blower using combustible gas according to claim 4, characterized in that: The ignition component further comprises a cooling portion, which is connected to the cooling cavity so as to allow cooling gas to flow into the cooling cavity.

6. The shock wave soot blower using combustible gas according to claim 5, characterized in that: The ignition part also includes a blocking component. The side wall of the combustion section is provided with an ignition port. The blocking component has an open state and a blocked state. In the open state, the ignition portion penetrates the blocking component and is placed in the combustion section; In the blocking state, the blocking assembly is used to block the ignition port and the ignition part is placed in the cooling cavity.

7. The shock wave soot blower using combustible gas according to claim 6, characterized in that: The sealing component includes a sealing member and an elastic member, wherein the sealing member is connected to the elastic member and is arranged adjacent to the ignition port. In the open state, the sealing member moves toward the elastic member to connect the cooling chamber with the combustion section. In the closed state, the sealing member abuts against the wall of the cooling chamber to seal the ignition port.

8. The shock wave soot blower using combustible gas according to claim 7, characterized in that: There are a plurality of blocking members, and the blocking members are arranged at intervals along the circumference of the ignition portion.

9. The shock wave soot blower using combustible gas according to claim 8, characterized in that: In the direction from the elastic member to the blocking member, the cross-sectional area of ​​the blocking member gradually decreases.

10. The shock wave soot blower using combustible gas according to any one of claims 1 to 9, characterized in that: It also includes a moving assembly, which includes a fixed seat, a moving seat and a moving drive member. The moving seat is connected to the base and the fixed seat, and the moving drive member is connected to the moving seat to drive the moving seat to move on the fixed seat.

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