Variable-frequency sound wave soot blower suitable for stable output in micro-positive pressure furnace

Abstract

The utility model discloses a frequency conversion sound wave soot blower suitable for stable output in a micro-positive pressure furnace. The frequency conversion sound wave soot blower comprises a sound wave generator capable of converting frequency, a sound wave guide pipe and a dustproof and antifouling assembly. The sound wave guide tube comprises a reducing horn connected with a sending port of the sound wave generator and an amplifying horn connected with the other end of the reducing horn; the dustproof and antifouling assembly comprises a fine filter screen arranged between the variable-diameter horn and the amplification horn and a coarse filter screen arranged on the side, away from the variable-diameter horn, of the amplification horn. The frequency conversion sound wave technology that the frequency converter is used for adjusting the rotating speed of the driving motor to control the sound wave frequency and intensity is adopted, accurate dust removal is achieved, efficiency is improved, and the problem that a traditional dust removal method is poor in effect in the micro-positive pressure environment is solved; the dustproof and antifouling assembly composed of the coarse filter screen, the fine filter screen and the sealing gasket forms a closed space, the purging guide pipe can purge the fine filter screen regularly, dust leakage is effectively prevented, and a series of problems caused by dust leakage in a traditional method are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a soot blower technical field, specifically speaking, a kind of frequency conversion acoustic wave soot blower suitable for stable output in micro-positive pressure furnace. BACKGROUND

[0002] Micro-positive pressure boiler is in the process of operation, since furnace and flue gas passage are all positive pressure state, so that the problem of soot is particularly prominent.The traditional ash removal method such as mechanical vibration, steam soot blowing etc., under micro-positive pressure environment, there are problems such as poor ash removal effect, high energy consumption, many wearing parts etc.In micro-positive pressure environment, dust is easy to leak during soot blowing, cause pollution to the environment around boiler, cause damage to sound equipment, affect the service life of equipment, there are security risks.Therefore, it is of great significance to develop a kind of soot blower that can efficiently remove ash and effectively prevent dust. UTILITY MODEL CONTENT

[0003] The utility model aims at overcoming the above-mentioned problems or at least partially solving the above-mentioned problems, and proposes a kind of frequency conversion acoustic wave soot blower suitable for stable output in micro-positive pressure furnace.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of frequency conversion acoustic wave soot blower suitable for stable output in micro-positive pressure furnace, including the sound generator of frequency conversion, sound wave guide pipe and dustproof and antifouling component;The sound wave guide pipe includes the variable diameter number cylinder connected with the emission port of sound generator, and the amplification number cylinder connected with the other end of variable diameter number cylinder;The dustproof and antifouling component includes the precision filter screen between variable diameter number cylinder and amplification number cylinder, and the coarse filter screen on the side of amplification number cylinder away from variable diameter number cylinder.

[0005] In a preferred embodiment, the variable diameter number cylinder and the amplification number cylinder are detachably connected together.

[0006] In a preferred embodiment, the outer wall of the amplification number cylinder is provided with a number cylinder support.

[0007] In a preferred embodiment, the dustproof and antifouling component further includes sealing gasket arranged on both sides of the precision filter screen.

[0008] In a preferred embodiment, the variable diameter number cylinder is provided with a purge guide pipe communicated with the inner cavity thereof, and the outlet of the purge guide pipe is directed to the precision filter screen.

[0009] In a preferred embodiment, the outlet of the purge guide pipe blows gas belonging to compressed gas source, which is controlled by solenoid valve.

[0010] In a preferred embodiment, the sound wave generator comprises a driving motor, a fixed coil unit and a moving coil unit, the moving coil unit is connected to the output shaft of the driving motor, the fixed coil unit is arranged at one end of the variable diameter barrel and is opposite to the moving coil unit, and the side walls of the fixed coil unit and the moving coil unit are both axially provided with flow guide holes.

[0011] In a preferred embodiment, the variable frequency sound wave soot blower further comprises a frequency converter electrically connected to the driving motor and the external controller, and the frequency converter is used for adjusting the rotating speed of the driving motor.

[0012] In a preferred embodiment, the coarse filter screen is connected to the flange surface of the enlarged barrel through bolts.

[0013] In a preferred embodiment, the fine filter screen is installed between the variable diameter barrel and the enlarged barrel outside the boiler and is connected through bolts.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the aspect of soot removal, the variable frequency sound wave technology of adjusting the rotating speed of the driving motor by the frequency converter to control the sound wave frequency and intensity realizes accurate soot removal, improves the efficiency and solves the problem that the traditional soot removal method is not good in the micro-positive pressure environment;

[0016] 2. In the aspect of dust prevention, the dustproof and antifouling assembly formed by the coarse filter screen, the fine filter screen and the sealing gasket forms a closed space, the blowing guide pipe of the variable diameter barrel can periodically blow the fine filter screen, dust leakage is effectively prevented, and the series of problems caused by dust leakage in the traditional method are solved;

[0017] 3. When the equipment is maintained, the detachable connection between the components facilitates maintenance, replacement and adjustment, reduces the maintenance workload and cost, the barrel support guarantees the stable work of the enlarged barrel, and the optimized flow guide hole design of the fixed coil unit and the moving coil unit can stably generate sound waves, improve the effectiveness and reliability of soot removal. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the utility model;

[0019] Figure 2 It is a front view sectional view structural schematic diagram of the sound wave guide pipe in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the coarse filter screen in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the fine filter screen in the utility model;

[0022] Figure 5 It is a module diagram of the utility model.

[0023] In the figure: 1, drive motor; 2, fixed ring unit; 3, moving ring unit; 4, variable diameter barrel; 5, sealing washer; 6, fine filter screen; 7, enlarged barrel; 8, barrel support; 9, coarse filter screen; 10, purge conduit. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, understandable and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] Those skilled in the art should understand that the embodiments described below are only preferred embodiments of the present application, and do not represent that the present application can only be implemented by the preferred embodiments, and the preferred embodiments are only used to explain the technical principles of the present application, and are not used to limit the protection scope of the present application. Based on the preferred embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should still fall within the protection scope of the present application.

[0026] It should be noted that in the description of the present application, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and is not indicative or suggestive of the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or suggesting relative importance.

[0027] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The utility model relates to a kind of frequency conversion acoustic wave soot blower suitable for stable output in micro-positive pressure furnace, solve the technical problems in the prior art, overall idea is as follows:

[0029] Embodiment one:

[0030] Please refer to Figures 1-5The utility model provides a kind of frequency conversion acoustic wave soot blower suitable for stable output in micro-positive pressure stove, including the acoustic wave generator of frequency conversion, sound wave guide pipe and dustproof and antifouling component;Sound wave guide pipe includes the variable diameter number cylinder 4 connected with acoustic wave generator emission port, and the amplification number cylinder 7 connected with the other end of variable diameter number cylinder 4;Dustproof and antifouling component includes the fine filter screen 6 arranged between variable diameter number cylinder 4 and amplification number cylinder 7, and the coarse filter screen 9 arranged in amplification number cylinder 7 away from the side of variable diameter number cylinder 4, and variable diameter number cylinder 4 and amplification number cylinder 7 can be detachably connected together.

[0031] In specific implementation, the outer wall of amplification number cylinder 7 is provided with number cylinder support 8, and the connection between number cylinder support 8 and amplification number cylinder 7 is detachable, so as to facilitate operation when amplification number cylinder 7 needs to be repaired, replaced or adjusted in position, and number cylinder support 8 has sufficient strength and stability, and can withstand the vibration of amplification number cylinder 7 in the working process without loosening or deforming.

[0032] In specific implementation, the dustproof and antifouling component further includes sealing washer 5 arranged on both sides of fine filter screen 6, and sealing washer 5 is made of high-temperature-resistant and wear-resistant material, can maintain good sealing performance in long-term micro-positive pressure environment, prevent dust from leaking from both sides of fine filter screen 6, and thus guarantee the overall dustproof effect of the dustproof and antifouling component.

[0033] In specific implementation, variable diameter number cylinder 4 is provided with blowing guide pipe 10 communicating with the inner cavity thereof, the outlet of blowing guide pipe 10 points to fine filter screen 6, and the gas blown out of the outlet of blowing guide pipe 10 belongs to compressed gas source, which can be controlled by electromagnetic valve, so as to conveniently and regularly blow fine filter screen 6, and avoid unnecessary manual cleaning.

[0034] In specific implementation, the acoustic wave generator includes driving motor 1, fixed coil unit 2 and moving coil unit 3, moving coil unit 3 is connected to the output shaft of driving motor 1, fixed coil unit 2 is arranged at one end of variable diameter number cylinder 4 and opposite to moving coil unit 3, and the side wall circumferences of fixed coil unit 2 and moving coil unit 3 are both axially provided with flow guide holes, the flow guide holes on fixed coil unit 2 and moving coil unit 3 are distributed on the same radius circumference, and the number of flow guide holes on fixed coil unit 2 and moving coil unit 3 can be the same or different, and the aperture size and distribution density of flow guide holes on fixed coil unit 2 and moving coil unit 3 are optimized according to the required frequency and intensity of sound wave, so as to ensure that pulsed fluid column can be efficiently generated, and then stable sound wave meeting the requirements can be generated.

[0035] In this way, moving coil unit 3 is driven by driving motor 1, and the flow guide holes of fixed coil unit 2 are covered by moving coil unit 3 at times and coincide with the flow guide holes on moving coil unit 3 at times, so that when high-pressure fluid enters the fluid inlet hole, the fluid generates pulsed fluid column through the flow guide holes, and these fluid columns generate periodic impact pressure on the surrounding fluid medium, thereby generating sound wave.

[0036] In the embodiment, the variable frequency acoustic wave soot blower further comprises a frequency converter electrically connected with the driving motor 1 and the external controller, the frequency converter is used for adjusting the rotating speed of the driving motor 1, and has a frequency locking function, so that the acoustic wave generator can stably operate after being adjusted to the target frequency, thereby ensuring that the acoustic wave generator can continuously and stably emit the high-intensity acoustic wave of the preset frequency to effectively remove the soot; the variable frequency current emitted by the frequency converter can drive the driving motor 1 to drive the moving coil unit 3 to rotate at a high speed, and the moving coil unit 3 cooperates with the fixed coil unit 2 to cut the airflow and emit the high-intensity acoustic wave of the preset frequency.

[0037] In the embodiment, the mesh size of the coarse filter screen 9 is 4 meshes, and the coarse filter screen 9 is connected with the flange surface of the enlarged cylinder 7 through bolts, so that the coarse filter screen 9 can effectively prevent large sundries from entering the inside of the acoustic wave generator under the positive pressure environment in the boiler, and protect the fixed coil unit 2 and the moving coil unit 3 from being damaged by the large particles.

[0038] In the embodiment, the fine filter screen 6 is installed between the variable diameter cylinder 4 and the enlarged cylinder 7 outside the boiler and is connected through bolts, so that the fine filter screen 6 can be conveniently replaced and maintained, and the fine filter screen 6 can effectively filter the fine dust and other substances remaining after the coarse filter screen 9 under the normal working condition, thereby preventing the fine dust and other substances from entering the acoustic wave generator and affecting the normal generation of the acoustic wave.

[0039] The above description of the embodiments is for facilitating the ordinary skilled in the art to understand and use the present application, and the person skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative labor, so the present application is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art without departing from the scope of the present application should be within the protection scope of the present application.

Claims

1. A variable frequency acoustic sootblower suitable for stable output in a micro- positive pressure furnace, characterized by: The sound wave generator, the sound wave conduit and the dustproof and antifouling assembly are capable of frequency conversion. The sound wave conduit comprises a variable diameter cylinder (4) connected with the sound wave generator emission port and an amplification cylinder (7) connected with the other end of the variable diameter cylinder (4). The dustproof and antifouling assembly comprises a fine filter screen (6) arranged between the variable diameter cylinder (4) and the amplification cylinder (7) and a coarse filter screen (9) arranged on the side of the amplification cylinder (7) away from the variable diameter cylinder (4).

2. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure furnace for stable output according to claim 1, characterized in that: The variable diameter cylinder (4) is detachably connected with the sound wave generator and the amplification cylinder (7).

3. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure furnace for stable output according to claim 2, characterized in that: The amplification cylinder (7) is provided with a cylinder support (8) on the outer wall.

4. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure furnace for stable output according to claim 3, characterized in that: The dustproof and antifouling assembly further comprises sealing gaskets (5) arranged on both sides of the fine filter screen (6).

5. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure furnace for stable output according to claim 4, characterized in that: The variable diameter cylinder (4) is provided with a purge conduit (10) communicating with the inner cavity, and the outlet of the purge conduit (10) points to the fine filter screen (6).

6. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure furnace for stable output according to claim 5, characterized in that: The gas blown out of the outlet of the purge conduit (10) belongs to a compressed gas source and is controlled by a solenoid valve.

7. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure boiler for stable output according to any one of claims 1 to 6, characterized in that: The sound wave generator comprises a driving motor (1), a fixed coil unit (2) and a moving coil unit (3), the moving coil unit (3) is connected with the output shaft of the driving motor (1), the fixed coil unit (2) is arranged at one end of the variable diameter cylinder (4) and is opposite to the moving coil unit (3), and the side walls of the fixed coil unit (2) and the moving coil unit (3) are both provided with flow guide holes in the circumferences.

8. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure furnace for stable output according to claim 7, characterized in that: The variable frequency sound wave soot blower further comprises a frequency converter electrically connected with the driving motor (1) and an external controller, and the frequency converter is used for adjusting the rotating speed of the driving motor (1).

9. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure furnace for stable output according to claim 8, characterized in that: The coarse filter screen (9) is connected with the flange surface of the amplification cylinder (7) through bolts.

10. A variable frequency acoustic sootblower suitable for use in a micro- positive pressure furnace for stable output according to claim 9, characterized in that: The fine filter screen (6) is arranged between the variable diameter cylinder (4) and the amplification cylinder (7) on the outside of the boiler and is connected through bolts.

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