A sonic sootblower based on a ceramic resonator structure

Abstract

The utility model discloses a kind of acoustic wave soot blower based on ceramic resonant cavity structure, including center axis, the one end of center axis is provided with airflow ejector, the other end of center axis is provided with resonant cavity, the one end of airflow ejector is opened with air inlet, and the gasket is arranged on center axis, the one end of resonant cavity is provided with clamping plate, the one end of airflow ejector is opened with annular slit, the bottom of resonant cavity is opened with connecting hole, the one end of center axis is provided with threaded rod, and nut is arranged on threaded rod.The utility model is replaced by ceramic material more resistant to high temperature, wear-resistant by setting resonant cavity, gasket, clamping plate, connecting hole, threaded rod, nut, this structure the most easily worn, damaged resonant cavity part, the rest part uses high-temperature resistant metal material, significantly improve the service life of resonant cavity acoustic wave soot blower in high-temperature region continuous work, simultaneously adopt the structure of convenient and quick replacement ceramic resonant cavity.

Description

Technical Field

[0001] This utility model relates to the field of acoustic soot blowers, specifically an acoustic soot blower based on a ceramic resonant cavity structure. Background Technology

[0002] The resonant cavity acoustic soot blower is a device that uses the principle of sound waves to remove ash from the surface of heat exchange tubes inside boilers, heat exchangers, etc. It generates sound waves of a specific frequency through a resonant cavity and uses the mechanical vibration effect of the sound waves to remove dust and dirt adhering to the surface of the heat exchange tubes.

[0003] The existing technology has the following shortcomings: In the existing technology, the "new type of resonant cavity acoustic soot blower" with application number 200620137818.9 "is composed of an air chamber sleeve, a central shaft, a thin-walled cylinder, a protective sleeve, a fixing bolt, a counterweight anti-wear ring, and a connecting pipe thread. The air chamber sleeve is installed on the fine thread screw at the right end of the central shaft and is connected to the connecting pipe thread. The thin-walled cylinder and the protective sleeve are installed at the left end of the central shaft, and the fixing bolt is connected to the central shaft."

[0004] The aforementioned equipment improves the efficiency of the sonic soot blower by setting up air chamber sleeves and air holes of different diameters, and can thoroughly remove coke and ash. However, the resonant cavity of the aforementioned equipment is usually made of metal. When the equipment is installed in the horizontal flue of the boiler, the temperature is above 1000℃. The metal material of the resonant cavity reaches the upper limit of the temperature it can withstand, and its strength is greatly reduced. It is very susceptible to damage from the impact of dust-laden flue gas. In particular, the lip area of ​​the resonant cavity is periodically subjected to the scouring of high-speed airflow, which is very easy to be damaged. Moreover, the aforementioned equipment usually needs to be replaced as a whole after it is damaged, and it is difficult to replace the resonant cavity part separately. Utility Model Content

[0005] The purpose of this invention is to provide an acoustic soot blower based on a ceramic resonant cavity structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an acoustic soot blower based on a ceramic resonant cavity structure, comprising a central shaft, an air jet ejector at one end of the central shaft, a resonant cavity at the other end of the central shaft, an air inlet at one end of the air jet ejector, a pad on the central shaft, a clamping plate at one end of the resonant cavity, an annular slit at one end of the air jet ejector, a connecting hole at the bottom of the resonant cavity, a threaded rod at one end of the central shaft, and a nut on the threaded rod.

[0007] As a preferred embodiment of this invention, the annular slit faces the lip region of the resonant cavity, one end of the central shaft extends into the resonant cavity, and the resonant cavity is made of ceramic material.

[0008] As a preferred embodiment of this utility model, the threaded rod and the central shaft form an integral whole, and one end of the threaded rod extends out of the resonant cavity.

[0009] As a preferred technical solution of this utility model, both the pad and the clamp are provided with openings that are compatible with the threaded rod, and the pad is sleeved on the end of the threaded rod that is connected to the central shaft.

[0010] As a preferred technical solution of this utility model, the clamping plate is convex in shape, the connecting hole is adapted to the protruding end of the clamping plate, the protruding end of the clamping plate is engaged in the connecting hole and the clamping plate is sleeved on the threaded rod.

[0011] As a preferred embodiment of this utility model, the non-protruding end of the clamping plate is in contact with one end of the resonant cavity, and the nut is connected to the protruding end of the threaded rod and is in contact with one end of the clamping plate.

[0012] As a preferred embodiment of this utility model, there is a certain gap between the outer edge of the protruding end of the clamping plate and the inner wall of the connecting hole, and the central shaft, air jet, pad, and clamping plate are all made of high-temperature resistant metal materials.

[0013] Compared with the prior art, this utility model provides an acoustic soot blower based on a ceramic resonant cavity structure, which has the following beneficial effects:

[0014] This ceramic-structured resonant cavity acoustic sootblower, through the design of a resonant cavity, pad, clamp, connecting hole, threaded rod, and nut, utilizes a ceramic resonant cavity. Because the resonant cavity is made of ceramic material, it offers better impact and wear resistance at high temperatures compared to traditional metal resonant cavities. Furthermore, the sufficient gap between the ceramic resonant cavity and the pad and clamp prevents the ceramic material from being crushed due to the much higher thermal expansion rate of metal materials compared to ceramic materials in the high-temperature boiler environment. The resonant cavity can be easily replaced by removing the nut and clamp later. This structure replaces the most vulnerable part of the resonant cavity, which directly withstands the impact of high-speed airflow at high temperatures, with a ceramic material that is more resistant to airflow impact and wear at high temperatures. The remaining parts are made of high-temperature resistant metal materials, significantly improving the service life of the resonant cavity acoustic sootblower during continuous operation in high-temperature areas. It also features a structure that allows for convenient and quick replacement of the ceramic resonant cavity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0017] Figure 3 This utility model Figure 2A magnified structural diagram at point A;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the resonant cavity of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection hole of this utility model;

[0020] Figure 6 This is a schematic diagram of the clamping plate structure of this utility model.

[0021] In the diagram: 1. Central shaft; 2. Air jet; 3. Resonance cavity; 4. Air inlet; 5. Pad; 6. Clamping plate; 7. Annular seam; 8. Connecting hole; 9. Threaded rod; 10. Nut. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-6 In this embodiment: an acoustic soot blower based on a ceramic resonant cavity structure includes a central shaft 1, an air jet injector 2 at one end of the central shaft 1, and a resonant cavity 3 at the other end of the central shaft 1. An air inlet 4 is provided at one end of the air jet injector 2, which can guide compressed air or steam into the air jet injector 2. A pad 5 is provided on the central shaft 1. A clamping plate 6 is provided at one end of the resonant cavity 3. An annular slit 7 is provided at one end of the air jet injector 2, which can convert high-pressure airflow into high-speed jet. A connecting hole 8 is provided at the bottom of the resonant cavity 3. A threaded rod 9 is provided at one end of the central shaft 1, and a nut 10 is provided on the threaded rod 9. The nut 10 can be used to fix the clamping plate 6.

[0024] In this embodiment, the annular slit 7 faces the lip region of the resonant cavity 3, one end of the central shaft 1 extends into the resonant cavity 3, and the resonant cavity 3 is made of ceramic material;

[0025] Specifically, the resonant cavity 3 is made of ceramic material, which is more impact-resistant and wear-resistant than ordinary high-temperature metals in high-temperature environments;

[0026] In this embodiment, the threaded rod 9 and the central shaft 1 form an integral whole, and one end of the threaded rod 9 extends out of the resonant cavity 3;

[0027] Specifically, the threaded rod 9 facilitates the connection between the central shaft 1 and the resonant cavity 3;

[0028] In this embodiment, the backing plate 5 and the clamping plate 6 are both provided with openings adapted to the threaded rod 9. The backing plate 5 is sleeved on one end of the threaded rod 9 connected to the central shaft 1.

[0029] Specifically, the backing plate 5 can limit the movement of the resonance cavity 3 in the direction of the air injector 2.

[0030] In this embodiment, the clamping plate 6 is in a "convex" shape. The connecting hole 8 is adapted to the protruding end of the clamping plate 6. The protruding end of the clamping plate 6 is clamped in the connecting hole 8 and the whole clamping plate 6 is sleeved on the threaded rod 9.

[0031] In this embodiment, the non-protruding end of the clamping plate 6 is in contact with one end of the resonance cavity 3. The nut 10 is connected to the protruding end of the threaded rod 9 and is in contact with one end of the clamping plate 6.

[0032] Specifically, the clamping plate 6 can limit the movement of the resonance cavity 3 in the opposite direction of the air injector 2.

[0033] In this embodiment, there is a certain gap between the outer edge of the protruding end of the clamping plate 6 and the inner wall of the connecting hole 8. The central shaft 1, the air injector 2, the backing plate 5, the clamping plate 6, etc. are all made of high-temperature resistant metal materials.

[0034] Specifically, the connecting hole 8 can facilitate the connection between the clamping plate 6 and the resonance cavity 3.

[0035] The working principle and usage process of the present utility model: Install the device at the position of the horizontal flue of the boiler, input gas with a certain pressure into the air inlet 4 of the air injector 2. The air injector 2 discharges high-speed air flow into the resonance cavity 3 through the annular slit 7, thereby generating high-energy sound waves, which can clean the ash in the boiler. Since the resonance cavity 3 is made of ceramic material, the ceramic resonance cavity 3 can have better high-temperature resistance to air flow impact and wear resistance effects than the traditional metal resonance cavity 3. And because there is a certain gap between the outer edge of the protruding end of the clamping plate 6 and the inner wall of the connecting hole 8, it can prevent the ceramic material from being crushed due to the thermal expansion rate of the metal material being much larger than that of the ceramic material in the high-temperature environment of the boiler for the acoustic soot blower of the resonance cavity 3.

[0036] Moreover, the clamping plate 6 is in a "convex" shape. Its protruding end is inserted into the bottom connecting hole 8 of the resonance cavity 3. The backing plate 5 and the nut 10 are locked on the threaded rod 9. The clamping plate 6 and the backing plate 5 are connected as a whole. The annular groove formed between them clamps the bottom of the resonance cavity 3, fixing it on the threaded rod 9. When the resonance cavity 3 needs to be replaced later, only the nut 10 and the clamping plate 6 need to be disassembled to complete, which is extremely convenient. This structure replaces the part of the resonance cavity 3 that directly bears the high-speed air flow impact and is most easily damaged at high temperature with ceramic material that is more resistant to air flow impact and wear at high temperature, and the rest is made of high-temperature resistant metal material, significantly improving the service life of the acoustic soot blower of the resonance cavity 3 for continuous operation in the high-temperature area, and at the same time adopting a structure that is convenient for quickly replacing the ceramic resonance cavity 3.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A soot blower based on a ceramic resonant cavity structure, comprising a central shaft (1), an air jet injector (2) disposed at one end of the central shaft (1), a resonant cavity (3) disposed at the other end of the central shaft (1), and an air inlet (4) provided at one end of the air jet injector (2), characterized in that: A backing plate (5) is provided on the central shaft (1), a clamping plate (6) is provided at one end of the resonance cavity (3), an annular slit (7) is formed at one end of the air flow injector (2), a connecting hole (8) is formed at the bottom of the resonance cavity (3), a threaded rod (9) is provided at one end of the central shaft (1), and a nut (10) is provided on the threaded rod (9).

2. The acoustic soot blower based on a ceramic resonant cavity structure according to claim 1, characterized in that: The annular slit (7) faces the lip region of the resonance cavity (3), one end of the central shaft (1) extends into the resonance cavity (3), and the resonance cavity (3) is made of ceramic material.

3. The acoustic soot blower based on a ceramic resonant cavity structure according to claim 1, characterized in that: The threaded rod (9) and the central shaft (1) form an integral body, and one end of the threaded rod (9) extends out of the resonance cavity (3).

4. The acoustic soot blower based on a ceramic resonant cavity structure according to claim 1, characterized in that: Openings adapted to the threaded rod (9) are formed on both the backing plate (5) and the clamping plate (6), and the backing plate (5) is sleeved on one end of the threaded rod (9) connected to the central shaft (1).

5. The acoustic soot blower based on a ceramic resonant cavity structure according to claim 1, characterized in that: The clamping plate (6) is in a "convex" shape, the connecting hole (8) is adapted to the protruding end of the clamping plate (6), the protruding end of the clamping plate (6) is clamped in the connecting hole (8), and the whole clamping plate (6) is sleeved on the threaded rod (9).

6. The acoustic soot blower based on a ceramic resonant cavity structure according to claim 1, characterized in that: The non-protruding end of the clamping plate (6) is in contact with one end of the resonance cavity (3), and the nut (10) is connected to the protruding end of the threaded rod (9) and is in contact with one end of the clamping plate (6).

7. The acoustic soot blower based on a ceramic resonant cavity structure according to claim 1, characterized in that: There is a certain gap between the outer edge of the protruding end of the clamping plate (6) and the inner wall of the connecting hole (8), and the central shaft (1), the air flow injector (2), the backing plate (5), and the clamping plate (6) are all made of high-temperature resistant metal materials.

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