CN211625294U

CN211625294U - Strengthen sound wave soot blower cavity

Info

Publication number: CN211625294U
Application number: CN201921696468.3U
Authority: CN
Inventors: 吴培烜; 纵跃; 杨腾飞
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-10-02
Anticipated expiration: 2029-10-11

Abstract

The utility model relates to a reinforced sound wave soot blower cavity, which comprises a horn, a spiral conduit, a ring-shaped air injection cover, a flange plate, a horn inner shell, a horn outer shell and a sound insulation material, wherein the cavity is a hollow cylinder with the sectional area from small to large; compressed gas or dry saturated steam is converted into sound waves through a sound wave generating device, the compressed gas or the dry saturated steam can be sprayed out through a spiral guide pipe and a circular ring type air spraying cover in a secondary pressurizing and accelerating mode, one part of sprayed air flow penetrates through fine air holes at a high speed, the other part of the sprayed air flow has a certain pressure and is reflected back to the wall of the air guide pipe, and the reflected high-speed air flow and the air flow at the air inlet end are in opposite impact to each other to generate high-strength sound waves. The dry saturated steam or compressed gas with increased pressure and speed and sound wave act together on the ash scale to remove ash more efficiently. The sound wave barrier material can reduce the loss of sound waves, protect the pipe wall and the shell, and remove the dead ash more efficiently and safely.

Description

Strengthen sound wave soot blower cavity

Technical Field

The utility model relates to a technical field is handled to the flue gas, specifically relates to a strengthen sound wave soot blower cavity.

Background

The currently installed soot blowers are mainly a steam soot blower, a sound wave soot blower and a gas pulse soot blower, a short-stroke steam soot blower is generally arranged in a boiler furnace, a telescopic and fixed rotary steam soot blower and a sound wave soot blower are arranged on a convection heating surface, and an air preheater is a telescopic steam soot blower or a gas pulse soot blower. Due to the characteristics of the structure and the working medium and the influence of a high-temperature environment, a barrel of the soot blower is often jammed, out of order, leaked steam and the like, so that the steam soot blower has high failure rate, large maintenance workload and low application rate; the sound wave soot blower has the disadvantages that the design energy is not coordinated with the fly ash characteristic of the boiler, the motor is easy to burn out, the soot blowing effect is poor, the accumulated soot on the heating surface of the boiler is easy to cause serious, and the exhaust gas temperature is increased, so the thermal efficiency of the boiler is greatly reduced. The soot blower is not normally operated and has poor soot blowing effect, which is one of the main reasons of high exhaust gas temperature of the existing boiler.

The basic principle of the sound wave ash removal is the high acceleration stripping effect and the vibration fatigue crushing effect of the sound waves on the accumulated ash. In addition, the relationship between sound waves and flue gas flow, the hydrodynamic field relationship between heat exchange tubes, the special nonlinear effect of high sound intensity and the like all play a role in removing ash and coke.

The existing sound wave soot blower is generally poor in soot blowing effect, a more effective, more environment-friendly and more cost-saving technology is being searched at present, and particularly relates to a soot blowing technology with maximized efficiency.

Disclosure of Invention

The invention aims to provide a reinforced sound wave soot blower cavity which is technically characterized in that secondary pressurization of dry saturated steam or compressed air is realized, the dry saturated steam or compressed air and reinforced sound waves are discharged together, and a material for blocking the sound waves is added, so that the loss of the sound waves is reduced, and the dead ash is removed more efficiently.

In order to solve the technical problems, the invention provides the following scheme: the utility model provides a strengthen sound wave soot blower cavity which characterized in that: the sound insulation loudspeaker comprises a loudspeaker (1) and a pressurizing conduit (4), wherein the loudspeaker comprises a large end (2) and a small end (3), the loudspeaker (1) consists of a loudspeaker inner shell (101) and a loudspeaker outer shell (102), a 12mm gap is formed between the loudspeaker outer shell (102) and the pressurizing conduit (4), a sound insulation material is placed in the gap, a flange plate A (8) is arranged at the inlet of the small end of the loudspeaker, and a flange plate B (9) is also arranged at the outlet of the small end; a flange C (10) is arranged at the inlet of the large end of the horn mouth, and the horn structure is connected with a flange B (9) at the outlet of the small end through the flange C (10) at the inlet of the large end of the horn; pressure boost pipe (4) are spouted gas lid (6) by spiral pipe (5) and ring type and are constituteed, spiral pipe (5) are constituteed by the inlet end with the end of giving vent to anger, pressure boost pipe inlet end is connected with the spiral pipe inlet end, spiral pipe is inside to be established by guide vane (7), guide vane (7) prolong the cavity axis and are the heliciform, the spiral pipe export is connected with the end of giving vent to anger, the end of giving vent to anger is connected by ring type gas lid (6), ring flange D (11) are equipped with to spiral pipe inlet end, ring flange E (12) are equipped with to spiral pipe end department of giving vent to anger, pressure boost pipe structure is connected with ring flange E (12) that the end was given vent to anger to the spiral pipe through ring flange D (11) of spiral pipe inlet end, ring flange E (12) that the end.

Preferably, the cavity is integrally formed with the helical guide body, and the cross-sectional area of the helical guide tube decreases from the gas flow inlet to the gas flow outlet.

Preferably, the annular air injection cover (6) is distributed from the outlet of the large end of the horn to the horn shell (102), fine air holes (601) are uniformly distributed on the annular air injection cover (6), and the sizes of the air holes are the same.

Compared with the prior art, the invention has the beneficial effects that: compressed gas or dry saturated steam is converted into sound waves through a sound wave generating device, the compressed gas or the dry saturated steam can be sprayed out through a spiral guide pipe and a circular ring type air spraying cover in a secondary pressurizing and accelerating mode, one part of sprayed air flow penetrates through fine air holes at a high speed, the other part of the sprayed air flow has a certain pressure and is reflected back to the wall of the air guide pipe, and the reflected high-speed air flow and the air flow at the air inlet end are in opposite impact to each other to generate high-strength sound waves. Compared with the air flow sprayed by the existing sound wave soot blower, the air flow is faster, and the dry saturated steam or compressed gas with increased pressure and speed and the sound wave act on the soot dirt together, so that the soot is more efficiently cleaned. The sound wave barrier material can reduce the loss of sound waves, protect the pipe wall and the shell, and remove the dead ash more efficiently and safely.

Drawings

FIG. 1 is a cross-sectional view of the present invention

FIG. 2 front view of the invention

FIG. 3 is a front view of the spiral conduit of the present invention

FIG. 4 is a front view of the circular ring type gas injection cap of the present invention

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.

The utility model provides a strengthen sound wave soot blower cavity which characterized in that: the sound insulation loudspeaker comprises a loudspeaker (1) and a pressurizing conduit (4), wherein the loudspeaker comprises a large end (2) and a small end (3), the loudspeaker (1) consists of a loudspeaker inner shell (101) and a loudspeaker outer shell (102), a 12mm gap is formed between the loudspeaker outer shell (102) and the pressurizing conduit (4), a sound insulation material is placed in the gap, a flange plate A (8) is arranged at the inlet of the small end of the loudspeaker, and a flange plate B (9) is also arranged at the outlet of the small end; a flange C (10) is arranged at the inlet of the large end of the horn mouth, and the horn structure is connected with a flange B (9) at the outlet of the small end through the flange C (10) at the inlet of the large end of the horn; pressure boost pipe (4) are spouted gas lid (6) by spiral pipe (5) and ring type and are constituteed, spiral pipe (5) are constituteed by the inlet end with the end of giving vent to anger, pressure boost pipe inlet end is connected with the spiral pipe inlet end, spiral pipe is inside to be established by guide vane (7), guide vane (7) prolong the cavity axis and are the heliciform, the spiral pipe export is connected with the end of giving vent to anger, the end of giving vent to anger is connected by ring type gas lid (6), ring flange D (11) are equipped with to spiral pipe inlet end, ring flange E (12) are equipped with to spiral pipe end department of giving vent to anger, pressure boost pipe structure is connected with ring flange E (12) that the end was given vent to anger to the spiral pipe through ring flange D (11) of spiral pipe inlet end, ring flange E (12) that the end.

The working principle and the using process of the invention are as follows: after the device is installed, dry saturated steam or compressed gas enters a cavity of the reinforced sound wave soot blower through the sound wave generating device, then passes through the pressurizing guide pipe (4), the pressurizing guide pipe (4) conducts directional drainage on the gas through the guide vanes (7), then passes through the spiral guide pipe (5) with the cross section area from large to small, the first pressurizing and accelerating are conducted again through the annular gas spraying cover (6) at the outlet end of the pressurizing guide pipe, the gas holes (601) in the annular gas spraying cover can conduct secondary pressurizing and accelerating on the gas, then the dry saturated steam or compressed gas part with the pressurizing and accelerating is discharged through the fine gas holes (601), the other part has certain pressure to collide with the wall of the gas guide pipe and reflect back, the reflected high-speed gas flow and the gas flow at the gas inlet end collide, vibration is generated at the opening. The sound wave converted by the sound wave generating device passes through the horn small end (3) and then reaches the horn large end (2) to clean ash at dead corners, and the sound wave blocking material acts all the time, so that the requirement of the sound wave soot blower with the frequency of 70-350 HZ is met.

The utility model discloses a strengthen sound wave soot blower cavity, dry saturated steam or compressed air are through pressure boost pipe pressure boost acceleration rate, and the part is discharged through tiny gas pocket (601), and another part has certain pressure and reflects back to the air guide pipe wall, and the high velocity air who reflects back and the air current offset of inlet end produce the vibration at the loudspeaker open end, produce the high intensity sound wave. The sound wave is more efficiently discharged together with dry saturated steam or compressed gas under the action of the sound wave barrier material, so that the energy of the sound wave is stronger, and the sound wave and the dry saturated steam or the compressed gas together efficiently and safely act on the ash removal work.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be covered by the appended claims.

Claims

1. The utility model provides a strengthen sound wave soot blower cavity which characterized in that: the sound insulation loudspeaker comprises a loudspeaker (1) and a pressurizing conduit (4), wherein the loudspeaker comprises a large end (2) and a small end (3), the loudspeaker (1) consists of a loudspeaker inner shell (101) and a loudspeaker outer shell (102), a 12mm gap is formed between the loudspeaker outer shell (102) and the pressurizing conduit (4), a sound insulation material is placed in the gap, a flange plate A (8) is arranged at the inlet of the small end of the loudspeaker, and a flange plate B (9) is also arranged at the outlet of the small end; a flange C (10) is arranged at the inlet of the large end of the horn mouth, and the horn structure is connected with a flange B (9) at the outlet of the small end through the flange C (10) at the inlet of the large end of the horn; pressure boost pipe (4) are spouted gas lid (6) by spiral pipe (5) and ring type and are constituteed, spiral pipe (5) are constituteed by the inlet end with the end of giving vent to anger, pressure boost pipe inlet end is connected with the spiral pipe inlet end, spiral pipe is inside to be established by guide vane (7), guide vane (7) prolong the cavity axis and are the heliciform, the spiral pipe export is connected with the end of giving vent to anger, the end of giving vent to anger is connected by ring type gas lid (6), ring flange D (11) are equipped with to spiral pipe inlet end, ring flange E (12) are equipped with to spiral pipe end department of giving vent to anger, pressure boost pipe structure is connected with ring flange E (12) that the end was given vent to anger to the spiral pipe through ring flange D (11) of spiral pipe inlet end, ring flange E (12) that the end.

2. The enhanced acoustic wave sootblower cavity of claim 1, wherein: the cavity and the spiral guide body are integrally formed, and the cross-sectional area of the spiral guide pipe is gradually reduced from the airflow inlet to the airflow outlet.

3. The enhanced acoustic wave sootblower cavity of claim 1, wherein: the cavity is connected with the horn shell (102) from the outlet of the horn big end by a ring-shaped air injection cover (6), and fine air holes (601) are uniformly distributed on the ring-shaped air injection cover.