Spiral flute sound wave generating device applied to boiler ash removal

Abstract

The utility model relates to the technical field of boiler ash removal, in particular to a whistle sound wave generating device applied to boiler ash removal. Comprising a driving motor, a sound wave generator is fixedly arranged on a front end cover of the driving motor through a fixing support, the side face, away from the driving motor, of the sound wave generator fixedly communicates with a connecting pipeline through a connecting flange, and the end, away from the sound wave generator, of the connecting pipeline fixedly communicates with a sound wave guide pipe through a connecting flange; the end, away from the connecting pipeline, of the sound wave guide pipe fixedly communicates with a horn through a connecting flange, the peripheral wall of the sound wave generator fixedly communicates with a compressed air pipeline II, an electromagnetic valve II is arranged on the compressed air pipeline II, and the peripheral wall of the connecting pipeline fixedly communicates with a compressed air pipeline I; and an electromagnetic valve I is arranged on the compressed air pipeline I. According to the utility model, positive pressure airflow can be formed in the connecting pipeline, so that the problem that boiler smoke enters the interior of the sound wave generator to cause faults due to ash blockage is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler soot cleaning, in particular to a rotary flute sound wave generating device used for boiler soot cleaning. Background Art

[0002] During the production and operation of the boilers installed in the petrochemical plant area, dust and slag will accumulate on the water-cooled walls, superheaters, economizers, preheaters and flues of the heating surfaces. This will not only weaken the heat transfer of the boiler heating surface, resulting in a decrease in the boiler's thermal efficiency and a reduction in production load, but also, when the dust and slag on the heating surface are serious, it may also lead to unexpected shutdowns and cause significant economic losses.

[0003] The principle of soot cleaning with the rotary flute sonic wave generator is to send sound waves of a certain intensity into the spatial areas where soot may accumulate in the running boiler, and use the energy of the sound field to cause the air and dust in these areas to vibrate violently, thereby preventing and destroying the combination of dust and the heat exchange surface, putting it in a suspended sulfide state, and then carrying it away with the flue gas or falling off automatically.

[0004] The rotary flute sound wave generating device installed in the prior art has the following technical problems. In actual use conditions, the rotary flute sound wave generating device installed in the prior art uses a plurality of rotary flute sound wave generating devices to alternately operate to clean different positions inside the boiler. During the period when the rotary flute sound wave generating device stops operating, the horn of the rotary flute sound wave generating device and the interior of the sound wave generator are both under negative pressure. The flue gas in the boiler will form natural convection in the horn, thereby causing the smoke in the boiler to enter the interior of the sound wave generator, which may further easily cause the rotary flute sound wave generating device to malfunction due to ash blockage. Utility Model Content

[0005] The utility model provides a rotary flute sound wave generating device used for boiler ash cleaning, and aims to solve the technical problem that during the stop period of the rotary flute sound wave generating device installed in the prior art, smoke and dust in the boiler enter the interior of the sound wave generator thereof, causing the rotary flute sound wave generating device to malfunction due to ash blockage.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] The utility model provides a whirlwind sound wave generating device for boiler ash cleaning, comprising a driving motor, a front end cover of the driving motor is fixedly provided with a sound wave generator through a fixing bracket, a side of the sound wave generator away from the driving motor is fixedly connected to a connecting pipeline through a connecting flange, an end of the connecting pipeline away from the sound wave generator is fixedly connected to a sound waveguide through a connecting flange, an end of the sound waveguide away from the connecting pipeline is fixedly connected to a horn through a connecting flange, a peripheral wall of the sound wave generator is fixedly connected to a compressed air pipeline II, a solenoid valve II is arranged on the compressed air pipeline II, a peripheral wall of the connecting pipeline is fixedly connected to a compressed air pipeline I, and a solenoid valve I is arranged on the compressed air pipeline I.

[0008] Furthermore, the sound wave generator includes a compressed air chamber, an airflow cutting disk, a sealing cover, a rotating shaft and a positioning ring, the peripheral wall of the compressed air chamber is provided with an air inlet hole, the side of the compressed air chamber away from the driving motor is provided with an air outlet hole, a circular tube penetrating the chamber is provided at the center of the compressed air chamber, shaft sleeves are provided at both ends of the circular tube, the inner ring of the shaft sleeve is sleeved on the rotating shaft, one end of the rotating shaft is connected to the rotating shaft of the driving motor through a coupling transmission, the other end of the rotating shaft away from the driving motor passes through the through hole at the center of the airflow cutting disk and is fixed to the airflow cutting disk through a positioning ring, a plurality of airflow cutting holes are equidistantly arranged on the body of the airflow cutting disk around the center of the disk, the sealing cover and the compressed air chamber are fixedly connected by threaded connection to form a closed cavity for accommodating the airflow cutting disk, and the side of the sealing cover away from the airflow cutting disk is fixedly connected to the connecting pipeline by a connecting flange.

[0009] Furthermore, the airflow cutting disc is a steel disc.

[0010] Furthermore, keyways are respectively provided at both ends of the rotating shaft. The keyway at the left end of the rotating shaft cooperates with the key to clamp the airflow cutting disk, and the keyway at the right end of the rotating shaft cooperates with the key to fix the coupling. Annular grooves for installing a positioning ring are also provided on both sides of the keyway at the left end of the rotating shaft.

[0011] Furthermore, the diameter of the airflow cutting disk matches the diameter of the cavity formed by the sealing cover body and the compressed air chamber body.

[0012] Furthermore, the center point of the air outlet hole of the compressed air warehouse body, the center point of the air flow cutting hole on the air flow cutting disk when it is rotated to correspond to the position of the air outlet hole of the compressed air warehouse body, and the center point of the connecting pipeline are on the same axis.

[0013] Furthermore, the driving motor is a variable frequency motor.

[0014] Furthermore, the fixing bracket is a cylindrical structure with connecting flanges at both ends.

[0015] The beneficial effects achieved by the utility model are:

[0016] The utility model adopts the technical measures of connecting the connecting pipeline to the compressed air pipeline, driving the motor and the electromagnetic valve body for electrical interlocking operation. When the utility model is in a stop operation cycle, a positive pressure airflow can be formed inside the connecting pipeline of the utility model, thereby effectively solving the technical problem of boiler smoke entering the interior of the sound wave generator and causing it to malfunction due to ash blockage, thereby effectively improving the stability of the boiler cleaning and dust removal process.

[0017] The utility model adopts the technical measures of adopting a variable frequency motor as a power source and setting a steel airflow cutting disk that matches the power of the variable frequency motor. The sound wave generator of the utility model emits a wide and variable sound wave frequency band, and the sound source sound pressure is stable. It is suitable for a variety of ash contents and can well ensure the omnidirectional ash removal, thereby effectively improving the work efficiency of the boiler ash cleaning and dust removal process. The application of the variable frequency motor saves the use of electric energy, thereby effectively reducing the use cost of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is the overall installation schematic diagram of the utility model;

[0020] Figure 2 It is a partial structural sectional view of the utility model;

[0021] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0022] Figure 4 It is a structural schematic diagram of the rotating shaft of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the airflow cutting disc of the utility model;

[0024] Figure 6 This is a working principle diagram of the airflow cutting disc of the utility model.

[0025] In the figure, 1. driving motor; 2. fixing bracket; 3. sound wave generator; 3-1. compressed air chamber; 3-1-1. air inlet; 3-1-2. air outlet; 3-2. air flow cutting disk; 3-3. sealing cover; 3-4. rotating shaft; 3-4-1. keyway; 3-4-2. keyway; 3-4-3. annular groove; 3-5. positioning ring; 4. connecting pipeline; 5. sound waveguide tube; 6. horn; 7. compressed air pipeline I; 8. solenoid valve I; 9. solenoid valve II; 10. compressed air pipeline II; 11. coupling.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] like Figures 1 to 6As shown, the utility model provides a whirlwind sound wave generating device for boiler ash cleaning, comprising a driving motor 1, a front end cover of the driving motor 1 is fixedly provided with a sound wave generator 3 through a fixing bracket 2, a side of the sound wave generator 3 away from the driving motor 1 is fixedly connected to a connecting pipeline 4 through a connecting flange, an end of the connecting pipeline 4 away from the sound wave generator 3 is fixedly connected to a sound waveguide 5 through a connecting flange, an end of the sound waveguide 5 away from the connecting pipeline 4 is fixedly connected to a horn 6 through a connecting flange, a peripheral wall of the sound wave generator 3 is fixedly connected to a compressed air pipeline I7, a solenoid valve I8 is arranged on the compressed air pipeline I7, and a peripheral wall of the sound wave generator 3 is fixedly connected to a compressed air pipeline II9, a solenoid valve II10 is arranged on the compressed air pipeline.

[0031] Furthermore, the sound wave generator 3 includes a compressed air chamber 3-1, an airflow cutting disk 3-2, a sealing cover 3-3, a rotating shaft 3-4 and a positioning ring 3-5. The peripheral wall of the compressed air chamber 3-1 is provided with an air inlet 3-1-1, and the side of the compressed air chamber 3-1 away from the driving motor 1 is provided with an air outlet 3-1-2. A circular tube penetrating the chamber is provided at the center of the compressed air chamber 3-1, and shaft sleeves are provided at both ends of the circular tube. The inner ring of the shaft sleeve is sleeved on the rotating shaft 3-4, and one end of the rotating shaft 3-4 is connected to the coupling 11. The transmission is connected to the rotating shaft of the driving motor 1, and the other end of the rotating shaft 3-4 away from the driving motor 1 passes through the through hole at the center of the airflow cutting disk 3-2 and is fixed to the airflow cutting disk 3-2 by a positioning ring 3-5. The airflow cutting disk 3-2 has a disk body with several airflow cutting holes equidistantly arranged around its center. The sealing cover body 3-3 and the compressed air chamber body 3-1 are fixed by threaded connection to form a closed cavity for accommodating the airflow cutting disk 3-2. The side of the sealing cover body 3-3 away from the airflow cutting disk 3-2 is fixedly connected to the connecting pipeline 4 by a connecting flange.

[0032] Furthermore, the airflow cutting disc 3-2 is a steel disc.

[0033] Furthermore, keyways are respectively provided at both ends of the rotating shaft 3-4. The keyway 3-4-1 at the left end of the rotating shaft cooperates with the key to clamp the airflow cutting disk, and the keyway 3-4-2 at the right end of the rotating shaft 3-4 cooperates with the key to fix the coupling 11. Annular grooves 3-4-3 for installing positioning rings are also provided on both sides of the keyway 3-4-1 at the left end of the rotating shaft 3-4.

[0034] Furthermore, the diameter of the airflow cutting disk 3-2 matches the diameter of the cavity formed by the sealing cover body 3-3 and the compressed air chamber body 3-1.

[0035] Furthermore, the driving motor 1 is a variable frequency motor.

[0036] Furthermore, the fixing bracket 2 is a cylindrical structure with connecting flanges at both ends.

[0037] Furthermore, the center point of the air outlet 3-1-2 of the compressed air chamber 3-1, the center point of the airflow cutting hole on the airflow cutting disk 3-2 when rotated to correspond to the position of the air outlet 3-1-2 of the compressed air chamber 3-1, and the center point of the connecting pipeline 4 are on the same axis.

[0038] When used specifically:

[0039] When installing this utility model:

[0040] The utility model is fixedly arranged on a supporting platform outside the boiler wall through the sound wave generator 3 and the mounting frame at the bottom of the driving motor 1. Further, the horn 6 of the utility model is fixedly arranged at a position inside the boiler furnace that needs to be cleaned through a connecting flange. The installation of the utility model is completed.

[0041] When using this utility model:

[0042] The drive motor 1, solenoid valve I8 and solenoid valve II9 of the utility model are in an electrical interlocking operation mode, that is, when the drive motor 1 is powered on, the solenoid valve I8 is powered off and closed, and the solenoid valve II9 is ​​powered on and opened at the same time. When the drive motor 1 is powered off and stopped, the solenoid valve I8 is powered on and opened, and the solenoid valve II9 is ​​powered off and closed at the same time.

[0043] When the drive motor 1 is powered on, the solenoid valve Ⅱ9 is powered on and opened at the same time. At this time, the compressed air pipeline Ⅱ10 is in a conducting state, and the compressed air chamber 3-1 is connected to the compressed air from the compressed air pipeline Ⅱ10. The compressed air further enters the closed cavity of the airflow cutting disk 3-2 composed of the sealing cover 3-3 and the compressed air chamber 3-1 through the air outlet 3-1-2. Further, through the rotation of the airflow cutting disk 3-2, the airflow cutting holes set on the airflow cutting disk 3-2 rotate to cut the compressed air for gas-sound conversion to form sound waves. The further formed sound waves are amplified through the connecting pipe 4 and the sound waveguide 5 and then through the horn 6 to enter the furnace of the boiler. Further using the effect of the sound field energy, the air and dust in the furnace are violently vibrated, thereby preventing and destroying the combination of dust and the heat exchange surface, making it in a suspended sulfide state, and further carried away with the flue gas or automatically falling off.

[0044] When the driving motor 1 loses power and stops, the solenoid valve II9 also loses power and closes, while the solenoid valve I8 is powered on and opens. At this time, the connecting pipe 4 is connected to the compressed air from the compressed air pipeline I7, and the compressed air is further compressed to form a positive pressure airflow inside the connecting pipe 4, thereby preventing the boiler smoke from entering the interior of the sound wave generator 3.

[0045] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A whistle sound wave generator for boiler cleaning, characterized in that: The invention comprises a driving motor (1), a front end cover of the driving motor (1) being fixedly provided with a sound wave generator (3) via a fixing bracket (2), a side of the sound wave generator (3) away from the driving motor (1) being fixedly connected to a connecting pipeline (4) via a connecting flange, an end of the connecting pipeline (4) away from the sound wave generator (3) being fixedly connected to a sound wave guide tube (5) via a connecting flange, an end of the sound wave guide tube (5) away from the connecting pipeline (4) being fixedly connected to a horn (6) via a connecting flange, a peripheral wall of the sound wave generator (3) being fixedly connected to a compressed air pipeline II (10), a solenoid valve II (9) being provided on the compressed air pipeline II (10), and a peripheral wall of the connecting pipeline (4) being fixedly connected to a compressed air pipeline I (7), a solenoid valve I (8) being provided on the compressed air pipeline I (7).

2. The rotary flute sound wave generator for boiler cleaning according to claim 1, characterized in that: The sound wave generator (3) comprises a compressed air chamber (3-1), an airflow cutting disc (3-2), a sealing cover (3-3), a rotating shaft (3-4) and a positioning ring (3-5); an air inlet hole (3-1-1) is arranged on the peripheral wall of the compressed air chamber (3-1); an air outlet hole (3-1-2) is arranged on a side of the compressed air chamber (3-1) away from the driving motor (1); a circular tube penetrating the chamber (3-1) is arranged at the center of the compressed air chamber (3-1); shaft sleeves are arranged at both ends of the circular tube; the inner ring of the shaft sleeve is sleeved on the rotating shaft (3-4); one end of the rotating shaft (3-4) is connected to the rotating shaft (3-4) through a coupling (11). The rotating shaft (3-4) is connected to the driving motor (1) through a transmission, and the other end of the rotating shaft (3-4) away from the driving motor (1) passes through a through hole at the center of the airflow cutting disk (3-2) and is fixedly arranged by a positioning ring (3-5). The airflow cutting disk (3-2) is provided with a plurality of airflow cutting holes around the center of the disk at equal intervals on the disk body. The sealing cover (3-3) and the compressed air chamber (3-1) are fixedly connected by threads to form a closed cavity for accommodating the airflow cutting disk (3-2). The side of the sealing cover (3-3) away from the airflow cutting disk (3-2) is fixedly connected to the connecting pipeline (4) by a connecting flange.

3. The rotary flute sound wave generator for boiler cleaning according to claim 2, characterized in that: The airflow cutting disc (3-2) is a steel disc.

4. The rotary flute sound wave generator for boiler cleaning according to claim 2, characterized in that: Keyways are respectively provided at both ends of the rotating shaft (3-4); the keyway (3-4-1) at the left end of the rotating shaft (3-4) cooperates with a key to clamp the airflow cutting disk (3-2); the keyway (3-4-2) at the right end of the rotating shaft (3-4) cooperates with a key to be fixedly connected to the coupling (11); and annular grooves (3-4-3) for installing a positioning ring (3-5) are also provided on both sides of the keyway (3-4-1) at the left end of the rotating shaft (3-4).

5. A rotary flute sound wave generator for boiler cleaning according to claim 2 or 3, characterized in that: The diameter of the airflow cutting disk (3-2) matches the diameter of the cavity formed by the sealing cover body (3-3) and the compressed air chamber body (3-1).

6. The rotary flute sound wave generator for boiler cleaning according to claim 5, characterized in that: The center point of the air outlet hole (3-1-2) of the compressed air chamber (3-1), the center point of the air flow cutting hole on the air flow cutting disk (3-2) when rotated to correspond to the position of the air outlet hole (3-1-2) of the compressed air chamber (3-1), and the center point of the connecting pipeline (4) are located on the same axis.

7. The rotary flute sound wave generator for boiler cleaning according to claim 1, characterized in that: The driving motor (1) is a variable frequency motor.

8. The rotary flute sound wave generator for boiler cleaning according to claim 1, characterized in that: The fixing bracket (2) is a cylindrical structure with connecting flanges arranged at both ends.

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