A distributed high frequency acoustic array sootblower

Abstract

This utility model discloses a distributed high-frequency acoustic array sootblower, comprising an array of air source pipes connected sequentially and symmetrically, manual valves, solenoid valves, an air inlet manifold, and an array of sootblowers. The gas in the air source pipes is compressed air supplied by an air compressor at a pressure of not less than 0.6 MPa. The compressed air enters the air inlet manifold controlled by the manual valves and solenoid valves, and then enters the array of sootblowers to generate a high-frequency sound source. The array of sootblowers consists of n resonant cavity acoustic horns, evenly distributed along the pipes. The air inlet manifold has multiple outlets, each connected to a pipe to form multiple sootblower branches. This utility model forms a superimposed sound field through the array of sootblowers, effectively covering the deep areas of horizontal flues and tail flues of coal-fired boilers. Through the multi-stage manifold design, the gas pressure can be stabilized, and particulate impurities and moisture in the gas can be separated before being distributed to each sootblower branch, reducing wear on the resonant cavities.

Description

Technical Field

[0001] This utility model relates to the field of boiler soot blowers, specifically a distributed high-frequency acoustic array soot blower. Background Technology

[0002] Soot blowers are devices used to remove ash accumulated on the furnace walls of coal-fired boilers, including heating surfaces, horizontal flues, and tail flues. For coal-fired boilers, coking on the water-cooled walls of the furnace, coking on the high-temperature superheaters and reheaters, and ash accumulation on the tail heating surfaces are common and unavoidable phenomena. Ash accumulation on heating surfaces affects heat transfer, increases exhaust gas temperature, reduces boiler efficiency, and in severe cases, can cause superheater tube rupture. Severe coking on the water-cooled walls can cause large slag deposits to block the slag buckets, preventing slag removal. Severe coking on the high-temperature superheaters and reheaters can block some of the flue gas passages between heating surfaces. Severe ash accumulation on the tail heating surfaces reduces the heat transfer efficiency of the superheaters, reheaters, economizers, and air preheaters, increases boiler exhaust gas temperature, and reduces boiler efficiency. Coking and ash accumulation on heating surfaces can also cause overheating, exacerbate corrosion, shorten the lifespan of the heating surfaces, and in severe cases, affect the normal operation of the boiler and even endanger the personal safety of inspection personnel.

[0003] Therefore, coking and ash accumulation are problems in the operation of coal-fired power plant boilers. Boilers are typically designed with a certain number of sootblowers to regularly remove ash from various heating surfaces, playing a crucial role in ensuring safe and economical boiler operation. However, the horizontal flue and tail flue of coal-fired boilers, as well as the low-low reheat area and economizer area, are quite deep, making it difficult for a single sootblower to cover them all. To address this issue, a distributed high-frequency acoustic array sootblower was developed and designed. Utility Model Content

[0004] The purpose of this invention is to overcome or at least partially solve the above problems by proposing a distributed high-frequency acoustic array soot blower.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a distributed high-frequency acoustic array sootblower, comprising an array of air source pipes connected sequentially and symmetrically arranged by pipes, a manual valve, a solenoid valve, an air inlet manifold, and an array sootblower. The gas in the air source pipe is compressed air supplied by an air compressor at a pressure of not less than 0.6 MPa. The compressed air enters the air inlet manifold through the manual valve and the solenoid valve, and then enters the array sootblower to generate a high-frequency sound source. The array sootblower is composed of n resonant cavity acoustic horns, which are evenly distributed on the pipes. The air inlet manifold has multiple outlets, each of which is connected to a pipe to form multiple sootblower branches.

[0006] In a preferred embodiment, the air intake manifold is configured in multiple stages, including a primary manifold and a secondary manifold. The primary manifold is used for initial pressure stabilization and impurity separation. The secondary manifold has a multi-chamber structure that evenly distributes the air source to each sootblower branch. The multiple outlets of the primary manifold are connected to the chambers of the secondary manifold through pipelines.

[0007] In a preferred embodiment, the interiors of both the primary manifold and the secondary manifold are coated with an anti-corrosion coating.

[0008] In a preferred embodiment, the primary manifold contains a multi-layer filtration structure.

[0009] In a preferred embodiment, the bottom of the primary manifold is provided with a drain outlet equipped with a valve.

[0010] In a preferred embodiment, the secondary manifold is divided into multiple pressure-stabilizing chambers by flow guide baffles, and each pressure-stabilizing chamber is connected to a sootblower branch.

[0011] In a preferred embodiment, the manual valve is used to regulate the gas volume, and the solenoid valve is a shut-off valve that can automatically control the opening and closing of the gas source.

[0012] Compared with the prior art, this utility model provides a distributed high-frequency acoustic array sootblower. The array sootblower forms a superimposed sound field, which effectively covers the deep areas such as the horizontal flue and tail flue of the coal-fired boiler. Through the multi-level box design, the gas pressure can be stabilized and the particulate impurities and moisture in the gas can be separated and then distributed to each sootblower branch, reducing the wear on the resonant cavity. Attached Figure Description

[0013] Figure 1 This is a layout diagram of the present utility model. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings.

[0015] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this description, those skilled in the art can make creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0016] This utility model relates to a distributed high-frequency acoustic array type soot blower, which solves the technical problems in the prior art. The overall concept is as follows:

[0017] Example 1:

[0018] Please see Figure 1A distributed high-frequency acoustic array sootblower includes an array of air source pipes 1 connected sequentially and symmetrically, manual valves 2, solenoid valves 3, an air inlet manifold 4, and an array sootblower 5. The gas in the air source pipes 1 is compressed air supplied by an air compressor at a pressure of not less than 0.6 MPa. The compressed air enters the air inlet manifold 4 through the manual valves 2 and 3, and then enters the array sootblower 5 to generate a high-frequency sound source. The array sootblower consists of n resonant cavity acoustic horns, which are evenly distributed on the pipes. The air inlet manifold 4 has multiple outlets, each connected to a pipe to form multiple sootblower branches. The manual valves 2 are used to adjust the air volume, and the solenoid valves 3 are shut-off valves that can automatically control the opening and closing of the air source.

[0019] In practice, the intake manifold 4 is set up in multiple stages, including a primary manifold 41 and a secondary manifold 42. The primary manifold 41 is used for initial pressure stabilization and impurity separation. The secondary manifold 42 has a multi-chamber structure and evenly distributes the air source to each sootblower branch. The multiple outlets of the primary manifold 41 are connected to each chamber of the secondary manifold 42 through pipelines.

[0020] In practice, the interiors of both the primary header 41 and the secondary header 42 are coated with an anti-corrosion coating, and the casing itself can also be made of corrosion-resistant materials (such as stainless steel) to achieve corrosion resistance.

[0021] In practice, the primary manifold 41 is equipped with a multi-layer filtration structure, including at least one layer of stainless steel sintered filter screen and one layer of fiber coagulation filter element, for intercepting particulate matter and moisture.

[0022] In practice, the bottom of the primary manifold 41 is equipped with a drain port with a valve for periodic sewage discharge.

[0023] In practice, the secondary header 42 is divided into multiple pressure-stabilizing chambers by a flow guide baffle, and each pressure-stabilizing chamber is connected to a soot blower branch.

[0024] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, and the specific work is as follows:

[0025] Compressed air supplied by the air compressor at a pressure of not less than 0.6 MPa enters the first-stage header 41 through the air source pipe 1, manual valve 2, and solenoid valve 3. Particulate matter and moisture are removed through a multi-layer filter structure. The outlet gas of the first-stage header 41 is diverted to each pressure-stabilizing chamber of the second-stage header 42, and then enters the array-type soot blower 5 to generate a high-frequency sound source. The sound source then repeatedly acts on the surface of the ash, causing it to loosen and fall off due to fatigue, and finally be discharged with the flue gas or by gravity.

[0026] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A distributed high-frequency acoustic array soot blower, characterized in that: The system includes an array of air source pipes connected sequentially and symmetrically, manual valves, solenoid valves, an air inlet manifold, and an array of soot blowers. The gas in the air source pipes is compressed air supplied by an air compressor at a pressure of not less than 0.6 MPa. The compressed air enters the air inlet manifold controlled by the manual valves and solenoid valves, and then enters the array of soot blowers to generate a high-frequency sound source. The array of soot blowers consists of n resonant cavity sound wave horns, which are evenly distributed on the pipes. The air inlet manifold has multiple outlets, each of which is connected to a pipe to form multiple soot blower branches.

2. The distributed high-frequency acoustic array soot blower according to claim 1, characterized in that: The air intake manifold is multi-stage, including a primary manifold and a secondary manifold. The primary manifold is used for initial pressure stabilization and impurity separation. The secondary manifold has a multi-chamber structure that evenly distributes the air source to each sootblower branch. The multiple outlets of the primary manifold are connected to the chambers of the secondary manifold through pipelines.

3. A distributed high-frequency acoustic array soot blower according to claim 2, characterized in that: The interiors of both the primary and secondary manifolds are coated with an anti-corrosion coating.

4. A distributed high-frequency acoustic array soot blower according to claim 2, characterized in that: The primary manifold contains a multi-layer filtration structure.

5. A distributed high-frequency acoustic array soot blower according to claim 2, characterized in that: The bottom of the primary manifold is equipped with a drain outlet with a valve.

6. A distributed high-frequency acoustic array soot blower according to claim 2, characterized in that: The secondary manifold is divided into multiple pressure-stabilizing chambers by flow guide baffles, and each pressure-stabilizing chamber is connected to a soot blower branch.

7. A distributed high-frequency acoustic array soot blower according to any one of claims 1-6, characterized in that: The manual valve is used to regulate the gas volume, and the solenoid valve is a shut-off valve that can automatically control the opening and closing of the gas source.

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