Frequency-adjustable double-resonant-cavity spiral-flow type sound wave soot blower

Abstract

The utility model discloses a frequency-adjustable double-resonant-cavity spiral-flow type sound wave soot blower which comprises an air inlet pipe, a nozzle cover, a connecting rod, a spiral-flow cavity sleeve and an inner sleeve. A first adjusting block capable of moving in the direction of the connecting rod is arranged in the inner sleeve, and a second adjusting block capable of moving in the direction of the inner sleeve is arranged on the outer wall of the inner sleeve. A second hemispherical groove is formed in the face, close to the flow guide cone, of the first adjusting block, and a third hemispherical groove is formed in the face, close to the flow guide cone, of the second adjusting block. According to the scheme, the volume of the first resonant cavity and the volume of the second resonant cavity can be adjusted through the first adjusting block and the second adjusting block, the purpose of obtaining sound waves of different frequencies is achieved, and compared with a traditional soot blower, the soot blower is wider in universality; the reflection times of airflow are increased, and the intensity of sound waves is improved.

Description

Technical Field

[0001] This utility model relates to the field of acoustic soot blowers, specifically a frequency-adjustable dual-resonance cavity vortex acoustic soot blower. Background Technology

[0002] A soot blower is a method that uses the energy of a sound field to remove ash from the heated surface of a boiler. It involves converting compressed air or steam into high-power sound waves and sending them into the furnace. This causes the ash on the heated surface to be subjected to repeated pulling and pressing actions by alternating dense and sparse waves at a certain frequency. As a result, the ash becomes loose and falls off due to fatigue and is carried away by the flue gas flow, or it settles into the ash hopper and is discharged under the action of gravity.

[0003] Existing swirl-type sootblowers consist of a swirl chamber and a resonant chamber. Fluid entering the swirl chamber is accelerated and injected into the resonant chamber, forming a backflow. The backflow converges with the incoming flow at the resonant chamber port, creating fluid friction and instantaneously generating high-intensity sound waves. However, existing swirl-type sootblower devices suffer from a fixed sound frequency, failing to meet the needs of various sootblowing applications, low sound intensity, and low energy conversion efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is that the existing vortex blowing device has a fixed sound wave frequency, which cannot meet the needs of various different blowing occasions, and has low sound wave intensity and low energy conversion efficiency.

[0006] (II) Technical Solution

[0007] To solve the above problems, this utility model provides the following technical solution:

[0008] A frequency-adjustable dual-resonance-cavity swirling acoustic soot blower includes an air inlet pipe, a nozzle cover, a connecting rod, a swirling cavity sleeve, and an inner sleeve.

[0009] The connecting rod is provided with an air distribution ring at one end near the air intake pipe. The inner ring of the air distribution ring is connected to the connecting rod, and the outer ring is connected to the inner wall of the nozzle cover. The air distribution ring is provided with multiple connecting ribs, and an air intake hole is formed between two adjacent connecting ribs.

[0010] The connecting rod is also provided with a guide cone in the middle. The guide cone is disposed inside the nozzle cover, and a ventilation gap is formed between the guide cone and the nozzle cover. A compression chamber is formed between the guide cone and the equalizing ring.

[0011] The inner sleeve is fitted inside the vortex cavity sleeve, and the two are arranged coaxially. The end of the connecting rod away from the air inlet pipe passes through the inner sleeve and is fixedly connected to the bottom of the inner sleeve. The inner sleeve and the connecting rod form a resonance cavity one, and the outer wall of the inner sleeve and the inner wall of the vortex cavity sleeve form a resonance cavity two.

[0012] The inner sleeve is provided with an adjusting block one that can move along the direction of the connecting rod, and the outer wall of the inner sleeve is provided with an adjusting block two that can move along the direction of the inner sleeve.

[0013] The bottom end face of the adjustment block is provided with a plurality of grooves, and each groove is provided with a bearing. The outer ring of the bearing is connected to the inner wall of the corresponding groove by an interference fit.

[0014] The bottom end face of the adjustment block 2 is provided with multiple grooves 2, and each groove 2 is provided with a bearing 2. The outer ring of the bearing 2 is connected to the inner wall of the corresponding groove 2 by an interference fit.

[0015] The bottom of the swirling cavity sleeve is provided with screw one and screw two. The middle part of screw one is connected to the bottom of the swirling cavity sleeve by means of threaded connection, and the other end is connected to the inner ring of bearing one by means of interference fit.

[0016] The middle part of the second screw is connected to the bottom of the vortex cavity sleeve by a threaded connection, and the other end is connected to the inner ring of the second bearing by an interference fit.

[0017] Furthermore, the air intake pipe, the nozzle cover, the guide cone, the air distribution ring, the inner sleeve, and the swirling cavity sleeve are all arranged on the same axis.

[0018] Furthermore, the connecting rib has a structure that is narrower at the top and wider at the bottom.

[0019] Furthermore, a hemispherical groove is provided on one end face of the guide cone near the swirling cavity sleeve.

[0020] Furthermore, the first adjusting block is provided with a hemispherical groove 2 on the side near the guide cone, and the second adjusting block is provided with a hemispherical groove 3 on the side near the guide cone.

[0021] (III) Beneficial Effects

[0022] The beneficial effects of this utility model are:

[0023] 1. This solution allows for the adjustment of the volume of resonant cavity one and resonant cavity two through the setting of adjustment block one and adjustment block two, thereby achieving the purpose of obtaining sound waves of different frequencies. Compared with traditional soot blowers, the soot blower in this solution has wider applicability.

[0024] 2. This solution increases the number of airflow reflections and enhances the intensity of sound waves by setting hemispherical groove one, hemispherical groove two, and hemispherical groove three. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the gas equalization ring of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of adjustment block one and adjustment block two of this utility model;

[0028] Figure 4 This is a structural schematic diagram of the first and second adjustment blocks of this utility model from another perspective.

[0029] The markings in the diagram are: 1-Inlet pipe, 2-Nozzle cover, 3-Connecting rod, 4-Swirl chamber sleeve, 5-Inner sleeve, 6-Gas equalization ring, 7-Connecting rib, 8-Inlet hole, 9-Guide cone, 10-Ventilation gap, 11-Compression chamber, 12-Resonance chamber one, 13-Resonance chamber two, 14-Adjusting block one, 15-Adjusting block two, 16-Groove one, 17-Bearing one, 18-Groove two, 19-Bearing two, 20-Screw one, 21-Screw two, 22-Hemispherical groove one, 23-Hemispherical groove two, 24-Hemispherical groove three. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0032] Please see Figures 1-4The present invention relates to a frequency-adjustable dual-resonance cavity swirling acoustic soot blower, comprising an air inlet pipe 1, a nozzle cover 2, a connecting rod 3, a swirling cavity sleeve 4, and an inner sleeve 5.

[0033] A uniform air distribution ring 6 is provided at one end of the connecting rod 3 near the intake pipe 1. The inner ring of the uniform air distribution ring 6 is connected to the connecting rod 3, and the outer ring is connected to the inner wall of the nozzle cover 2. The uniform air distribution ring 6 has multiple connecting ribs 7, with an air inlet 8 formed between two adjacent connecting ribs 7. Air enters the nozzle cover 2 through the intake pipe 1 and is then transmitted backward through the air inlet 8 on the uniform air distribution ring 6.

[0034] A guide cone 9 is also provided in the middle of the connecting rod 3. The guide cone 9 is located inside the nozzle cover 2, and a ventilation gap 10 is formed between the guide cone 9 and the nozzle cover 2. A compression chamber 11 is formed between the guide cone 9 and the equalizing ring 6. The air source enters the compression chamber 11 from the equalizing ring 6, and after compression, it is injected from the ventilation gap 10 into the swirl chamber sleeve 4 and the inner sleeve 5.

[0035] The inner sleeve 5 is fitted inside the vortex cavity sleeve 4, and the two sleeves are coaxially aligned. The end of the connecting rod 3 away from the intake pipe 1 passes through the inner sleeve 5 and is fixedly connected to the bottom of the inner sleeve 5. The inner sleeve 5 and the connecting rod 3 form a resonant cavity 12, and the outer wall of the inner sleeve 5 and the inner wall of the vortex cavity sleeve 4 form a resonant cavity 13. When the air source enters the resonant cavity 12 and the resonant cavity 13, it is backflowed to form a reflected flow towards the ventilation gap 10. This reflected flow and the airflow ejected from the ventilation gap 10 converge at the ports of the vortex cavity sleeve 4 and the inner sleeve 5, forming fluid friction and instantaneously generating high-intensity sound waves. By designing the volumes of the resonant cavity 12 and the resonant cavity 13 to be unequal, two backflows with different amplitudes can be obtained, thereby obtaining two sound waves with different frequencies.

[0036] To adjust the volume of resonant cavity 12 and resonant cavity 13, an adjusting block 14 that can move along the direction of connecting rod 3 is provided in the inner sleeve 5, and an adjusting block 25 that can move along the direction of the inner sleeve 5 is provided on the outer wall of the inner sleeve 5. By adjusting the position of adjusting block 14 in the inner sleeve 5 and adjusting the position of adjusting block 25 in the vortex cavity sleeve 4, the volume is adjusted, thereby obtaining backflow with different amplitudes. Ultimately, the sound wave frequency is adjusted.

[0037] To adjust the positions of adjusting block 14 and adjusting block 25, multiple grooves 16 are provided on the bottom end face of adjusting block 14. Each groove 16 contains a bearing 17. The outer ring of bearing 17 is connected to the inner wall of the corresponding groove 16 by an interference fit. Multiple grooves 28 are provided on the bottom end face of adjusting block 25. Each groove 28 contains a bearing 29. The outer ring of bearing 29 is connected to the inner wall of the corresponding groove 28 by an interference fit. Screw 20 and screw 21 are provided at the bottom of the vortex cavity sleeve 4. The middle part of screw 20 is connected to the bottom of the vortex cavity sleeve 4 by a threaded connection, and the other end is connected to the inner ring of bearing 17 by an interference fit. The middle part of screw 21 is connected to the bottom of the vortex cavity sleeve 4 by a threaded connection, and the other end is connected to the inner ring of bearing 29 by an interference fit. The position of adjusting block 14 can be adjusted by rotating screw 20, and the position of adjusting block 15 can be adjusted by rotating screw 21.

[0038] Specifically, the intake pipe 1, nozzle cover 2, guide cone 9, air distribution ring 6, inner sleeve 5, and swirl chamber sleeve 4 are all coaxially arranged, and the connecting rib 7 has a structure that is narrower at the top and wider at the bottom. The guide cone 9 has a hemispherical groove 22 on one end face near the swirl chamber sleeve 4. The adjusting block 14 has a hemispherical groove 23 on one side near the guide cone 9, and the adjusting block 25 has a hemispherical groove 24 on one side near the guide cone 9.

[0039] In this implementation scheme, in order to increase the number of reflections of the backflow, hemispherical groove 1 22, hemispherical groove 23 and hemispherical groove 3 24 are designed. The number of reflections is increased by utilizing the characteristic that the reflection directions of the spherical grooves are not consistent.

[0040] Working principle: The air source enters the nozzle cover 2 through the air inlet pipe 1, and then stably enters the compression chamber 11 through the air inlet hole 8 on the air distribution ring 6. After compression, it is injected at high speed through the ventilation gap 11 into the resonant chamber 12 and resonant chamber 13. Two backflows with different amplitudes are generated in the resonant chamber 12 and resonant chamber 13, which rush towards the port of the vortex chamber sleeve 4 and rub against the high-speed air source ejected from the ventilation gap 10, instantly generating high-intensity sound waves. When adjusting the frequency, only screws 1-20 and 2-22 need to be adjusted to adjust the position of adjusting block 1-14 and adjusting block 2-15, thereby adjusting the volume of the resonant chamber 12 and resonant chamber 2-13, and thus adjusting the amplitude of the backflow generated in them. Finally, they rub against the high-speed air source ejected from the ventilation gap 10, generating sound waves of different frequencies.

[0041] The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A frequency-adjustable dual-resonance cavity vortex acoustic soot blower, characterized in that: It includes an intake pipe (1), a nozzle cover (2), a connecting rod (3), a swirl chamber sleeve (4), and an inner sleeve (5); The connecting rod (3) is provided with an equalizing ring (6) at one end near the air inlet pipe (1). The inner ring of the equalizing ring (6) is connected to the connecting rod (3), and the outer ring is connected to the inner wall of the nozzle cover (2). The equalizing ring (6) is provided with multiple connecting ribs (7), and an air inlet hole (8) is formed between two adjacent connecting ribs (7). The connecting rod (3) is also provided with a guide cone (9) in the middle. The guide cone (9) is located inside the nozzle cover (2), and the guide cone (9) and the nozzle cover (2) form a ventilation gap (10). The guide cone (9) and the air equalization ring (6) form a compression chamber (11). The inner sleeve (5) is fitted inside the vortex cavity sleeve (4) and the two are arranged coaxially. The end of the connecting rod (3) away from the air inlet pipe (1) passes through the inner sleeve (5) and is fixedly connected to the bottom of the inner sleeve (5). The inner sleeve (5) and the connecting rod (3) form a resonance cavity one (12). The outer wall of the inner sleeve (5) and the inner wall of the vortex cavity sleeve (4) form a resonance cavity two (13). The inner sleeve (5) is provided with an adjusting block 1 (14) that can move along the direction of the connecting rod (3), and the outer wall of the inner sleeve (5) is provided with an adjusting block 2 (15) that can move along the direction of the inner sleeve (5); the bottom end face of the adjusting block 1 (14) is provided with a plurality of grooves 1 (16), and each groove 1 (16) is provided with a bearing 1 (17), and the outer ring of the bearing 1 (17) is connected to the inner wall of the corresponding groove 1 (16) by an interference fit; The bottom end face of the adjustment block 2 (15) is provided with a plurality of grooves 2 (18), and each groove 2 (18) is provided with a bearing 2 (19). The outer ring of the bearing 2 (19) is connected to the inner wall of the corresponding groove 2 (18) by an interference fit. The bottom of the swirling cavity sleeve (4) is provided with screw one (20) and screw two (21). The middle part of screw one (20) is connected to the bottom of the swirling cavity sleeve (4) by a threaded connection, and the other end is connected to the inner ring of bearing one (17) by an interference fit. The middle part of the screw two (21) is connected to the bottom of the vortex cavity sleeve (4) by a threaded connection, and the other end is connected to the inner ring of the bearing two (19) by an interference fit.

2. The frequency-adjustable dual-resonance cavity vortex acoustic soot blower according to claim 1, characterized in that: The air intake pipe (1), the nozzle cover (2), the guide cone (9), the air distribution ring (6), the inner sleeve (5), and the swirling cavity sleeve (4) are all arranged on the same axis.

3. The frequency-adjustable dual-resonance cavity vortex acoustic soot blower according to claim 1, characterized in that: The connecting rib (7) has a structure that is narrow at the top and wide at the bottom.

4. The frequency-adjustable dual-resonance cavity vortex acoustic soot blower according to claim 1, characterized in that: The guide cone (9) has a hemispherical groove (22) on one end face near the swirling cavity sleeve (4).

5. The frequency-adjustable dual-resonance cavity vortex acoustic soot blower according to claim 1, characterized in that: The first adjusting block (14) has a hemispherical groove (23) on the side near the guide cone (9), and the second adjusting block (15) has a hemispherical groove (24) on the side near the guide cone (9).

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