CN220958504U - Enhanced acoustic wave soot blower cavity - Google Patents

Enhanced acoustic wave soot blower cavity Download PDF

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Publication number
CN220958504U
CN220958504U CN202322569516.5U CN202322569516U CN220958504U CN 220958504 U CN220958504 U CN 220958504U CN 202322569516 U CN202322569516 U CN 202322569516U CN 220958504 U CN220958504 U CN 220958504U
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cavity
shell
inner cylinder
flange plate
horn body
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CN202322569516.5U
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Chinese (zh)
Inventor
谢嘉豪
刘君
骆義风
王勇
周鑫淼
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Guizhou Xidian Power Co ltd Qianbei Power Plant
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Guizhou Xidian Power Co ltd Qianbei Power Plant
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Abstract

The utility model relates to the technical field of soot blowers and discloses a reinforced acoustic soot blower cavity, which comprises a horn body, an inner cylinder and a shell, wherein the horn body, the inner cylinder and the shell are coaxially sleeved in sequence from inside to outside; a clearance space is formed between the horn body and the shell; the inner cylinder divides the clearance space into a ash returning isolation cavity and a rotational flow anti-blocking cavity; the ash return isolation cavity is a closed space enclosed by the shell, the inner cylinder and the flange plate and is used for isolating ash return flowing in from the large end of the horn body; the rotational flow anti-blocking cavity is an opening space formed by the inner cylinder, the horn body and the first flange plate, and the opening faces the large end of the horn body; the flange plate I is provided with a plurality of air holes aligned with the rotational flow anti-blocking cavity and used for outputting gas through the air holes to be sent into the rotational flow anti-blocking cavity for ash returning removal and heat dissipation; the problem of the ash accumulation is thoroughly avoided in the dead angle of the shell, the ash removal and the heat dissipation can be carried out on the horn body by utilizing the air flow, the device is more environment-friendly and more efficient, and the device has the characteristics of simple structure, strong ash return effect of cleaning and environmental protection.

Description

Enhanced acoustic wave soot blower cavity
Technical Field
The utility model relates to the technical field of soot blowers, in particular to a reinforced acoustic soot blower cavity.
Background
The sound wave soot blower technology is characterized in that compressed air (or steam) is converted into high-power sound waves or infrasonic waves (a pressure wave propagated in a space medium (gas) in the form of a dense wave) through a specific horn structure, the sound waves or the infrasonic waves are sent into a furnace from the small end to the large end of a horn body, when accumulated dust on a heating surface is repeatedly pulled and pressed by the dense wave which is alternately changed at a certain frequency, the dust is loosened and shed due to fatigue, and the flushing of smoke flow and the impact of particles in the smoke flow are taken away along with the smoke flow or the dust is sunk to a dust hopper to be discharged under the action of gravity, so that the dust cleaning function is exerted. The current acoustic wave soot blower is widely applied to industrial environments such as boilers in thermal power plants, and is especially used for cleaning ash in enclosed spaces such as SCR denitration reactors.
The novel sound wave soot blower is used in a complex environment with high temperature and high heat, such as a boiler, has very high requirements on high temperature resistance and corrosion resistance of equipment materials, causes high cost of the soot blower, has only one horn body as a high-cost and important sound generating device, and needs to strengthen main body protection, so that the sound wave soot blower in the prior art is provided with a shell outside the horn body for protecting the heat and sound of the horn body and improving the sound generating efficiency of the sound wave generator, but a clearance space is formed between the shell and the horn body, the pressure in a closed space, such as a reactor, is greater than the pressure in a cavity of the sound wave soot blower, partial suspended dust is caused by negative pressure to enter the cavity of the soot blower, the cavity dust is hardened to cause abnormal sound generation, the soot blower has poor soot blowing effect, and when the blockage is serious, the soot blower cannot work normally.
In order to solve the problems, the existing sound wave soot blower is provided with sound insulation materials between the shell and the horn body, so that heat insulation and sound collection are realized, and anti-blocking is realized, but the sound wave soot blower has high requirements on materials due to high temperature and high heat of the use environment of the sound wave soot blower, and has high cost and manufacturing cost, and the materials can volatilize toxic gases to pollute the environment and harm the health after long-term use; another solution is to arrange a duct-type structure in the cavity, reducing the use of sound-insulating materials, and at the same time reinforcing the sound waves, which has the problem of complex structure, which is not conducive to inspection and maintenance.
Disclosure of utility model
The utility model aims to provide a reinforced type sound wave soot blower cavity which is used for solving the technical problems that the existing sound wave soot blower cavity is complex in structure, dead angles in the cavity are easy to accumulate, and the heat insulation and anti-blocking effects are poor.
The basic scheme provided by the utility model is as follows: a cavity of a reinforced acoustic soot blower comprises a horn body, an inner cylinder and a shell which are coaxially sleeved in sequence from inside to outside; a clearance space is formed between the horn body and the shell; the inner cylinder divides the clearance space into a ash returning isolation cavity and a rotational flow anti-blocking cavity; the horn body comprises a small end and a large end; the small end is provided with a first flange plate; one end of the inner cylinder and one end of the shell are fixedly connected to the first position and the second position on the flange plate assembly respectively; the other end of the inner cylinder is fixedly connected to the shell and is close to the other end of the shell, and the shell is divided into a first shell and a second shell; the ash return isolation cavity is a closed space enclosed by the first shell, the inner cylinder and the flange plate and is used for isolating ash return flowing in from the large end of the horn body; the rotational flow anti-blocking cavity is an opening space formed by the second shell, the inner cylinder, the horn body and the first flange plate, and the opening faces the large end of the horn body; and a plurality of air holes aligned with the rotational flow anti-blocking cavity are formed in the first flange plate and are used for outputting gas through the air holes to be sent into the rotational flow anti-blocking cavity for removing ash and heat dissipation.
The working principle and the advantages of the utility model are as follows: firstly, one ends of a shell and an inner cylinder are respectively and fixedly connected to different positions on a first flange plate, the other end of the inner cylinder is fixedly connected to a first distance away from the other end of the shell, so that a closed ash return isolation cavity is formed by the shell, the inner cylinder and the first flange plate, the ash return flowing in from the large end of a horn body is prevented from being stuck and accumulated in a dead angle of the shell, normal sounding of the horn body is affected, and the sticky accumulation of dead angle suspended matters between the isolation shell and the horn body is realized; and the other end of the inner cylinder is fixedly connected to the shell and is not closed at a position close to the large end with the horn body, so that an open rotational flow anti-blocking cavity is formed by the inner cylinder, the horn body and the first flange plate, air holes aligned with the rotational flow anti-blocking cavity are formed in the first flange plate, and air output by a plurality of air holes is sent into the rotational flow anti-blocking cavity to clear ash and dissipate heat.
Compared with the prior art, this cavity structure does not adopt the sound insulation material that is with high costs and not environmental protection, also does not have complicated structure, utilize the inner tube to divide into the cavity of two different functions with the clearance between casing and the horn body, add the gas pocket and send into cyclone, can thoroughly avoid the problem of the ash accumulation that returns at the casing dead angle, the mode of utilizing the air current blows away the ash simultaneously, environmental protection is more efficient, when avoiding the ash accumulation that returns, can also utilize the air current to dispel the heat to the horn body, has simple structure, clearance self ash effect is strong, environmental protection's characteristics have further improved the effect of sound wave soot blower.
Further, the inner cylinder is in an arc conical surface cylinder shape, and one end with a small opening is fixedly connected to the first flange plate.
The beneficial effects are that: the arc conical surface can play a better role in guiding airflow, strengthen outlet wind power and realize a stronger soot blowing effect.
Further, the volume of the ash return isolation cavity is smaller than that of the rotational flow anti-blocking cavity.
The beneficial effects are that: the problem of dead angle accumulation can be reasonably balanced and avoided, and the soot blowing effect is improved.
Further, the vertical distance between the first position and the small end is smaller than the vertical distance between the second position and the first position. The vertical distance between the second position and the first position is controlled within the range of 2-2.5 times of the vertical distance between the first position and the small end.
The beneficial effects are that: the volume division of the ash return isolation cavity and the cyclone anti-blocking cavity is more reasonable.
Further, along the horizontal axis direction, the length of the shell is smaller than the length of the horn body and larger than the length of the inner cylinder; the length of the inner cylinder is controlled within the range of 2/3-3/4 of the length of the horn body.
The beneficial effects are that: by the size setting, the two cavities can be controlled within a certain proportion range, so that the soot blowing effect is kept in a high-efficiency mode.
Further, the housing is cylindrical; one end of the shell is provided with a second flange plate; the flange plate II is fixedly connected with the flange plate I through a first bolt group.
The beneficial effects are that: the connection firmness of the shell and the horn body is improved.
Further, a flange plate III is arranged at one end of the inner cylinder; the third flange plate is fixedly connected with the first flange plate and the second flange plate through a second bolt group; the inner cylinder is fixedly connected with the shell through a second bolt group.
The beneficial effects are that: the connection firmness of the inner cylinder, the shell and the horn body is improved.
Drawings
FIG. 1 is a cross-sectional view of a cavity of a reinforced acoustic soot blower provided by an embodiment of the utility model.
Detailed Description
The following is a further detailed description of the embodiments:
the labels in the drawings of this specification include: horn 1, inner tube 2, casing 3, first casing 31, second casing 32, ash return isolation chamber 4, whirl anti-blocking chamber 5, ring flange one 61, first bolt group 71, second bolt group 72, third bolt group 73, ring flange two 62, ring flange three 63, gas pocket 8, vibrator 9.
An example is substantially as shown in figure 1: a cavity of a reinforced acoustic soot blower comprises a horn body 1, an inner cylinder 2 and a shell 3 which are coaxially sleeved in sequence from inside to outside; a clearance space is formed between the horn body 1 and the shell 3; the inner cylinder 2 divides the clearance space into a ash return isolation cavity 4 and a rotational flow anti-blocking cavity 5. The ash return isolation cavity 4 is a closed space and is used for isolating ash return flowing in from the large end of the horn body; the cyclone anti-blocking cavity 5 is an open space and is used for removing ash and radiating after gas is sent into the cyclone anti-blocking cavity. The ash return isolation cavity and the rotational flow anti-blocking cavity are formed by the following structures.
Specifically, the horn body 1 includes a small end and a large end, according to the general horn body structure, the large end with a large opening and the small end with a small opening, sound waves are guided from the small end to the large end, and are transmitted into the space to be cleaned from the large end, as shown in fig. 1, the small end is located on the left side, the large end is located on the right side, and the above is only for illustrating the distinction between the large end and the small end, and is not limited to the left side and the right side. The first flange 61 is installed at the small end, in this embodiment, the diameter of the first flange 61 is 495mm, the installation needs of the shell, the horn body and the inner cylinder can be adapted, two groups of installation holes uniformly distributed along two concentric circles are formed in the first flange 61, one group of installation holes on the outer side are in the first position and are used for being matched with the first bolt group 71 to install the shell 3, one group of installation holes on the inner side are in the second position and are used for being matched with the second bolt group 72 to install the inner cylinder 2, the vertical distance between the first position and the small end is smaller than the vertical distance between the second position and the first position, in this embodiment, the vertical distance between the second position and the first position is controlled to be 2-2.5 times of the vertical distance between the first position and the small end, and the arrangement of the distance can ensure that effective cavities are formed, and the volumes of the two cavities can be reasonably divided, so that effective ash returning isolation and efficient ash cleaning performance are achieved. In the embodiment, the first bolt group is M30x80 high-strength bolts, and the second bolt group is M10x60 high-strength bolts; the housing 33 is fixedly connected with the interlayer cylinder 32 through the third bolt group 26, so that the stable connection of the whole sound wave assembly is realized.
The shell 3 is cylindrical, one end of the shell is fixedly connected to the first flange plate 61, a group of mounting holes are formed in the other end of the shell, a first distance is formed between the shell and the other end of the shell, the specific selection of the first distance is matched with the length of the inner cylinder and used for being fixedly connected with the inner cylinder 2 through a third bolt group 73, and in the embodiment, the type of the third bolt group is M20x30 high-strength bolts. Sealing rings are arranged at the positions of the second bolt group and the third bolt group, so that the sealing performance of a sealing space is improved, and return ash is prevented from entering the cavity through bolts to be accumulated.
The inner cylinder 2 is in an arc conical surface cylinder shape, one end with a small opening is fixedly connected to the first flange plate 61, and one end with a large opening is fixedly connected to the shell 3. The other end of the inner cylinder 2 is provided with another set of mounting holes which are matched with one set of mounting holes at the other end of the shell 3, and the other end of the inner cylinder is fixedly connected with the shell 3 through a third bolt set 73, so that the shell 3 is divided into a first shell 31 and a second shell 32. In this embodiment, the diameter of the shell is 419mm, the diameter of the small end of the opening of the inner cylinder is 200mm, the diameter of the small end of the horn body is 120mm, and the size can be matched with the position spacing difference, so that the formed gap space volume is in a proper range.
The enclosed space enclosed by the first shell 31, the inner cylinder 2 and the first flange plate 61 forms a ash return isolation cavity 4; the other end of inner tube 2 is connected with casing 3, is not connected with horn body 1, has the clearance opening, and from this second casing 32, inner tube 2, the whirl that horn body 1 and ring flange one 61 enclose prevents stifled chamber 5 and is the open space, and the opening is towards the big end of horn body 1 to the air inlet in whirl prevents stifled chamber 5 is greater than the gas outlet, can make the whirl gather more when the export, and atmospheric pressure is stronger, can effectively blow away the ash back, and the gas outlet control is in less within range simultaneously, reduces the probability that the ash back got into the intracavity.
The volume of the ash return isolation cavity is smaller than that of the rotational flow anti-blocking cavity, so that the dead angle accumulation problem can be reasonably balanced and avoided, and the ash blowing effect can be improved. Along the horizontal axis direction, the length of the shell 3 is smaller than the length of the horn body 1 and larger than the length of the inner cylinder 2, in this embodiment, the length of the shell is 745mm, the length of the horn body is 760mm, and the length of the inner cylinder is 570mm; the length of the inner cylinder is controlled within the range of 2/3-3/4 of the length of the horn body, in the embodiment, the length is 3/4, and the size is set, so that the volume ratio of the two cavities can be controlled to be proper, and the soot blowing effect is kept at high efficiency.
In order to improve the firmness of the fixed connection, the second flange plate 62 is installed at one end of the housing 3, the second flange plate 62 has the same structure as the first flange plate 61, two identical groups of installation holes and corresponding installation modes are provided, at the moment, the two sides of one end of the housing 3 are provided with the plate bodies of the second flange plate 62, and the purpose of the arrangement is that the housing 3 and the inner cylinder 2 are installed more firmly, and meanwhile, the air holes 8 formed in the first flange plate are provided with longer guide grooves, so that the feeding of gas is facilitated.
A third flange 63 is arranged at the small end of the inner cylinder opening, a group of mounting holes are formed in the third flange 63, and the third flange 63 is fixedly connected with the first flange 61 through a second bolt group 72; when the shell is provided with the second flange plate 62, the small end of the inner cylinder is fixedly connected to the first flange plate 61 and the second flange plate 62 through the second bolt 72, so that the connection firmness is improved.
The first flange plate 61 is provided with a plurality of air holes 8 aligned with the cyclone anti-blocking cavity and positioned between the first position and the small end, and the air holes are used for conveying the air output by the air holes into the cyclone anti-blocking cavity 5 to remove ash and dissipate heat. When the shell is provided with the second flange plate 62 and the third flange plate 63 is provided with the inner barrel 2, a plurality of air holes penetrate through the first flange plate 61, the second flange plate 62 and the third flange plate 63, the arrangement of the guide channels is beneficial to prolonging the air holes 8, the output force of gas is improved, the flow efficiency of swirl gas in the swirl anti-blocking cavity 5 is improved, and the ash cleaning efficiency is further improved. The inner cylinder 3 is made of a metal sheet with high temperature resistance and small surface friction, and the friction is small, so that the adhesive force of the piled matters can be reduced, the piled matters float in the air, and the piled matters can be blown away along with air flow more easily.
The outlet of the air hole 8 is provided with an inclined angle which is an included angle with the horizontal plane and is controlled between 10 degrees and 30 degrees, so that the rotational flow gas circulation efficiency of the rotational flow anti-blocking cavity 5 entering through the air hole 8 is ensured to be higher, and the soot blowing efficiency is improved. In the embodiment, 4 air holes are uniformly distributed on the circumference, and the air holes are matched with the air pressure of 0.3-0.5Mpa, so that the air can cover the whole cyclone anti-blocking cavity 5 and blow out from the opening, the soot blowing efficiency is maintained, and meanwhile, the energy is saved and the consumption is reduced; the gas is the dry compressed air after steam-water separation, the dry compressed air after steam-water separation improves the dryness of the gas input into the cyclone anti-blocking cavity, reduces the probability of forming a deposit again due to the fact that the gas input into the cavity has moisture and ash returning, and improves the soot blowing effect.
When the device is specifically used, the large end of the horn body faces to a closed space needing ash removal, such as an SCR denitration reactor, when the reactor runs, the ash removal is realized by leading sound waves from the small end of the horn body to the large end and transmitting the sound waves into the reactor, the pressure in the closed space such as the reactor is higher than the pressure in the cavity of the sound wave ash blower, and the possibility that part of suspended dust enters a gap space between the horn body and the shell is caused by negative pressure; because of the arrangement of the inner cylinder of the cavity, the inner cylinder is in sealing connection with the shell, dust is effectively isolated outside the ash return isolation cavity, and meanwhile, the cyclone anti-blocking cavity is provided with airflow towards the big end of the horn body, so that positive pressure dust blowing is realized, suspended matters are prevented from being accumulated and attached to the horn body to influence the sound wave soot blowing effect of the horn body, and the soot blowing efficiency of the sound wave soot blower is improved.
Example two
Different from the first embodiment, the inner cylinder is welded with a plurality of vibrators 9 uniformly on the circumference of the surface of the inner cylinder facing the ash return isolation cavity, in the embodiment, 3 vibrators are arranged, specifically, the distance between the vibrators and the small end of the horn body is controlled within the range of 1/3-1/2 of the length of the inner cylinder along the horizontal axis direction, the distance and the number are set, the inner cylinder can be effectively vibrated, the adhesion of accumulation in the cyclone anti-blocking cavity on the inner cylinder is reduced, and the soot blowing effect is improved.
This cavity passes through the setting of inner tube, divide into the clearance space between casing and the horn body confined ash back and keep apart chamber and open-ended whirl and prevent stifled chamber, in addition utilize the gas pocket to prevent stifled chamber input gas to the whirl, make can utilize ash back to keep apart the chamber and thoroughly keep apart the ash back, avoid the casing dead angle to pile up the thing, can also utilize the whirl to prevent stifled chamber simultaneously and realize deashing and heat dissipation through the whirl, through the reasonable settlement of two cavity volumes, can balance the condition of solving the dead angle pile up the thing and improve the deashing efficiency, make the sound wave ash back device that has this cavity keep high efficiency from the deashing ability, improve soot blowing efficiency, and has simple structure, the environmental protection, the characteristics that the deashing ability is strong, be fit for using widely.
The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present utility model, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims (8)

1. The cavity of the enhanced acoustic soot blower is characterized by comprising a horn body, an inner cylinder and a shell which are coaxially sleeved in sequence from inside to outside; a clearance space is formed between the horn body and the shell; the inner cylinder divides the clearance space into a ash returning isolation cavity and a rotational flow anti-blocking cavity; the horn body comprises a small end and a large end; the small end is provided with a first flange plate; one end of the inner cylinder and one end of the shell are fixedly connected to the first position and the second position on the flange plate assembly respectively; the other end of the inner cylinder is fixedly connected to the shell and is close to the other end of the shell, and the shell is divided into a first shell and a second shell; the ash return isolation cavity is a closed space enclosed by the first shell, the inner cylinder and the flange plate and is used for isolating ash return flowing in from the large end of the horn body; the rotational flow anti-blocking cavity is an opening space formed by the second shell, the inner cylinder, the horn body and the first flange plate, and the opening faces the large end of the horn body; and a plurality of air holes aligned with the rotational flow anti-blocking cavity are formed in the first flange plate and are used for outputting gas through the air holes to be sent into the rotational flow anti-blocking cavity for removing ash and heat dissipation.
2. The enhanced acoustic soot blower cavity of claim 1, wherein said inner barrel is in the shape of an arcuate cone, and the small open end is fixedly attached to the first flange.
3. The enhanced acoustic soot blower cavity of claim 1 wherein said ash return isolation cavity has a volume less than the volume of the swirl anti-blocking cavity.
4. The enhanced acoustic sootblower cavity of claim 1 wherein said vertical spacing between said first location and said small end is less than said vertical spacing between said second location and said first location.
5. The enhanced acoustic sootblower cavity of claim 4 wherein said vertical spacing between position two and position one is controlled to be within a range of 2-2.5 times the vertical spacing between position one and the small end.
6. The enhanced acoustic sootblower cavity of claim 1 wherein said inner barrel is controlled to a length in the range of 2/3-3/4 of the length of the horn in the horizontal axis direction.
7. The enhanced acoustic sootblower cavity of claim 1 wherein said housing is cylindrical; one end of the shell is provided with a second flange plate; the flange plate II is fixedly connected with the flange plate I through a first bolt group.
8. The enhanced acoustic soot blower cavity of claim 7, wherein one end of said inner barrel is provided with a third flange; the third flange plate is fixedly connected with the first flange plate and the second flange plate through a second bolt group; the inner cylinder is fixedly connected with the shell through a third bolt group.
CN202322569516.5U 2023-09-21 2023-09-21 Enhanced acoustic wave soot blower cavity Active CN220958504U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322569516.5U CN220958504U (en) 2023-09-21 2023-09-21 Enhanced acoustic wave soot blower cavity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322569516.5U CN220958504U (en) 2023-09-21 2023-09-21 Enhanced acoustic wave soot blower cavity

Publications (1)

Publication Number Publication Date
CN220958504U true CN220958504U (en) 2024-05-14

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Application Number Title Priority Date Filing Date
CN202322569516.5U Active CN220958504U (en) 2023-09-21 2023-09-21 Enhanced acoustic wave soot blower cavity

Country Status (1)

Country Link
CN (1) CN220958504U (en)

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