Intelligent diagnosis and automatic ash removal system for complex pipeline and working method

Abstract

The invention relates to the technical field of gas dust removal, and particularly discloses a complex pipeline intelligent diagnosis and automatic ash removal system and a working method.The complex pipeline intelligent diagnosis and automatic ash removal system comprises a plurality of air suction hoods and a frequency conversion fan, the air suction hoods are jointly connected with the frequency conversion fan through pipelines, and the frequency conversion fan is connected with a control system through a data line; an electric control valve, a pressure sensor, a vibration ash removal device and a back flushing pulse valve are mounted on a pipeline connected with the air suction cover, and the electric control valve, the pressure sensor, the vibration ash removal device and the back flushing pulse valve are all connected with a control system through data lines; according to the method, a complex pipeline full-size model is established, flow field simulation is carried out, the pipeline structure is optimized, and the reference air volume and air pressure range of each pipeline under different working conditions are determined; the air volume and the air pressure of each pipeline are monitored on line and compared with the standard air volume and the standard air pressure, automatic zero-shutdown ash removal is conducted on pipelines with abnormal air pressure, pipeline resistance and operation power consumption are reduced on line, the operation efficiency of the pipelines is improved, and the service life of the pipelines is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of gas dust removal, and in particular to a complex pipeline intelligent diagnosis and automatic dust cleaning system and a working method. Background Art

[0002] The blast furnace casthouse is one of the main sources of pollution in ironworks. Slag generates dust as it flows from the taphole and through the slag ditch. To improve working conditions in the casthouse and prevent dust from polluting the surrounding environment, a suction system is typically installed with multiple suction hoods at key locations prone to dust generation. This system collects and purifies the generated dust through the suction of induced draft fans.

[0003] However, because multiple suction hoods share a single blower, the suction piping is complex, which can easily lead to flow imbalance and mismatch with dust collection during actual operation. This can cause insufficient suction in some areas, leading to dust escape, or excessive suction, wasting energy. Furthermore, the complexity of the piping and the numerous elbows create numerous areas prone to dust accumulation, further exacerbating the flow imbalance and causing increased pipeline resistance and operating power consumption. Therefore, it is necessary to design an intelligent diagnosis and automatic dust cleaning system and operating method for complex piping to address the problems of increased pipeline resistance and increased operating power consumption caused by dust accumulation in existing dust emission piping. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a complex pipeline intelligent diagnosis and automatic dust cleaning system and working method.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a complex pipeline intelligent diagnosis and automatic dust cleaning system, including an air suction hood and a variable frequency fan, wherein the air suction hoods are provided in plurality, and the air suction hoods are connected to a variable frequency fan through a pipeline, and the variable frequency fan is connected to the control system through a data line, and electric regulating valves, pressure sensors, vibrating dust cleaning devices and back-blowing pulse valves are installed on the pipelines connected to the air suction hoods, and the electric regulating valves, pressure sensors, vibrating dust cleaning devices and back-blowing pulse valves are all connected to the control system through data lines.

[0006] Specifically, the electric regulating valve is installed on a pipeline close to the air suction hood.

[0007] Specifically, the vibration dust cleaning device and the back-blowing pulse valve are installed adjacent to each other at a position on the pipeline where dust is easily accumulated.

[0008] Specifically, the vibration dust cleaning device adopts a vibration motor, which is directly installed on the outer wall of the pipeline. The vibration motor peels off the dust attached to the inner wall of the pipeline through vibration.

[0009] Specifically, the back-blowing pulse valve is installed on a compressed air pipeline, the compressed air pipeline is connected to the pipeline, the compressed air pipeline is connected to an external compressor, and the compressed air pipeline pulse-blows back the dust in the pipeline.

[0010] A working method of a complex pipeline intelligent diagnosis and automatic dust cleaning system includes the following steps:

[0011] S1. First, establish a full-scale model of the complex pipeline and perform flow field simulation to optimize the pipeline structure and determine the reference air volume and air pressure range under different working conditions for each pipeline;

[0012] S2. The air volume and pressure of each pipeline are monitored online through pressure sensors installed in each pipeline. The control system compares the air volume and pressure with the reference air volume and pressure. Based on the comparison results, the control system adjusts the opening of the electric regulating valve and the frequency of the variable frequency fan;

[0013] S3. At the same time, based on the pressure change data of the pressure sensors of each pipeline, the control system promptly starts the vibration cleaning device to perform high-frequency vibration cleaning, and opens the back-blow pulse valve to allow compressed air pulse back-blow for zero-stop cleaning.

[0014] The present invention has the following beneficial effects:

[0015] The complex pipeline intelligent diagnosis and automatic dust cleaning system and working method designed by the present invention optimizes the pipeline structure by establishing a full-scale model of the complex pipeline and performing flow field simulation, and determines the reference air volume and air pressure range under different working conditions of each pipeline; the air volume and air pressure of each pipeline are monitored online and compared with the reference air volume and air pressure, and based on this, the air volume of each pipeline during operation is intelligently regulated, and the pipeline with abnormal air pressure is automatically cleaned with zero shutdown, thereby reducing pipeline resistance and operating power consumption online, and improving pipeline operation efficiency and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of the working method of the intelligent diagnosis and automatic dust cleaning system for complex pipelines.

[0017] Figure 2 This is a structural diagram of the complex pipeline intelligent diagnosis and automatic dust cleaning system.

[0018] In the figure: 1-suction hood; 2-electric regulating valve; 3-pressure sensor; 4-vibration cleaning device; 5-reverse pulse valve; 6-control system; 7-frequency conversion fan; 8-pipeline; 9-data line. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely further describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] like Figure 1-Figure 2 As shown, an intelligent diagnosis and automatic dust cleaning system and working method for complex pipelines are mainly established by building a full-size model of the complex pipeline and performing flow field simulation, optimizing the pipeline structure, and determining the reference air volume and air pressure range under different working conditions of each pipeline; the air volume and air pressure of each pipeline are monitored online and compared with the reference air volume and air pressure, and based on this, the air volume of each pipeline during operation is intelligently controlled, and the pipeline with abnormal air pressure is automatically cleaned.

[0021] A complex pipeline intelligent diagnosis and automatic dust cleaning system includes an air suction hood 1 and a variable frequency fan 7. There are three air suction hoods 1. Each air suction hood 1 is connected to a variable frequency fan 7 through a pipeline 8 to form a main pipeline. The variable frequency fan 7 is connected to a control system 6 through a data line 9. An electric regulating valve 2, a pressure sensor 3, a vibration cleaning device 4 and a back-blowing pulse valve 5 are installed on the pipeline 8 connected to the air suction hood 1. The electric regulating valve 2, the pressure sensor 3, the vibration cleaning device 4 and the back-blowing pulse valve 5 are all connected to the control system 6 through a data line 9.

[0022] The electric regulating valve 2 is installed on the pipeline 8 close to the suction hood 1.

[0023] The vibration dust cleaning device 4 and the back-blowing pulse valve 5 are installed adjacent to each other at a key position of the pipeline 8 where dust is easily accumulated.

[0024] The vibration dust cleaning device 4 uses a vibration motor, which is directly installed on the outer wall of the pipeline 8. The vibration motor peels off the dust attached to the inner wall of the pipeline through vibration.

[0025] The back-blowing pulse valve 5 is installed on the compressed air pipeline, the compressed air pipeline is connected to the pipeline 8, the compressed air pipeline is connected to the external compressor, and the compressed air pipeline pulse-type back-blowing dust in the pipeline 8.

[0026] The pressure sensor 3 is installed at a key position of each pipeline 8, and the installation position meets the standard requirements for flow measurement.

[0027] Each pipeline 8 is installed with an electric regulating valve 2.

[0028] The vibration cleaning device 4 is installed at the key dust accumulation position of each pipeline 8. It removes the attached dust through high-frequency vibration and cooperates with the compressed air pulse back-blowing system to achieve zero-stop cleaning.

[0029] The intelligent control system 6 is connected to the pressure sensor 3, the vibrating dust cleaning device 4, the electric regulating valve 2 and the variable frequency fan 7; the opening of the electric regulating valve 2 and the frequency of the variable frequency fan 7 are adjusted based on the flue gas flow data converted from the dynamic pressure of the pressure sensor 3, and the automatic dust cleaning device is controlled based on the static pressure data of the pressure sensor 3.

[0030] A working method of a complex pipeline intelligent diagnosis and automatic dust cleaning system includes the following steps:

[0031] 1. First, establish a full-scale model of the complex pipeline 8 and perform flow field simulation to optimize the structure of the pipeline 8 and determine the reference air volume and air pressure range under different working conditions of each pipeline 8.

[0032] 2. The air volume and air pressure of each pipeline 8 are monitored online by the pressure sensor 3 installed in each pipeline 8, and compared with the reference air volume and air pressure in the control system 6. According to the comparison result, the opening of the electric regulating valve 2 and the frequency of the variable frequency fan 7 are regulated by the control system 6.

[0033] 3. At the same time, based on the pressure change data of the pressure sensor 3 of each pipeline 8, the control system 6 promptly starts the vibration cleaning device 4 to perform high-frequency vibration cleaning, and opens the back-blow pulse valve 5 to allow compressed air pulse back-blow for zero-stop cleaning.

[0034] In addition, in order to further improve the timeliness and effectiveness of regulation, an intelligent control model is integrated in the intelligent control system 6. The intelligent control model is established on the basis of establishing a full-scale model of a complex pipeline and performing flow field simulation, optimizing the pipeline structure and determining the reference air volume and air pressure range under different working conditions of each pipeline, combined with the flow and pressure change laws of each pipeline under different working conditions.

[0035] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the guidance of the present invention, and any technical solutions that are the same or similar to those of the present invention, fall within the scope of protection of the present invention.

[0036] The technology, shape, and structure not described in detail in the present invention are all well-known technologies.

Claims

1. A complex pipeline intelligent diagnosis and automatic dust cleaning system, characterized by: It includes an air suction hood and a variable frequency fan. There are multiple air suction hoods. The air suction hoods are connected to a variable frequency fan through pipelines. The variable frequency fan is connected to the control system through a data line. Electric regulating valves, pressure sensors, vibrating cleaning devices and back-blowing pulse valves are installed on the pipelines connected to the air suction hoods. The electric regulating valves, pressure sensors, vibrating cleaning devices and back-blowing pulse valves are all connected to the control system through data lines.

2. The complex pipeline intelligent diagnosis and automatic dust cleaning system according to claim 1 is characterized in that: The electric regulating valve is installed on a pipeline close to the air suction hood.

3. The complex pipeline intelligent diagnosis and automatic dust cleaning system according to claim 1 is characterized in that: The vibration dust cleaning device and the back-blowing pulse valve are installed adjacent to each other at a position on the pipeline where dust is easily accumulated.

4. The complex pipeline intelligent diagnosis and automatic dust cleaning system according to claim 3 is characterized in that: The vibration dust cleaning device adopts a vibration motor, which is directly installed on the outer wall of the pipeline. The vibration motor peels off the dust attached to the inner wall of the pipeline through vibration.

5. The complex pipeline intelligent diagnosis and automatic dust cleaning system according to claim 3 is characterized in that: The back-blowing pulse valve is installed on a compressed air pipeline, the compressed air pipeline is connected to the pipeline, the compressed air pipeline is connected to an external compressor, and the compressed air pipeline pulse-type back-blowing dust in the pipeline.

6. The working method of the complex pipeline intelligent diagnosis and automatic dust cleaning system according to any one of claims 1 to 5 is characterized in that: The following steps are involved: S1. First, establish a full-scale model of the complex pipeline and perform flow field simulation to optimize the pipeline structure and determine the reference air volume and air pressure range under different working conditions for each pipeline; S2. The air volume and pressure of each pipeline are monitored online through pressure sensors installed in each pipeline. The control system compares the air volume and pressure with the reference air volume and pressure. Based on the comparison results, the control system adjusts the opening of the electric regulating valve and the frequency of the variable frequency fan; S3. At the same time, based on the pressure change data of the pressure sensors of each pipeline, the control system promptly starts the vibration cleaning device to perform high-frequency vibration cleaning, and opens the back-blow pulse valve to allow compressed air pulse back-blow for zero-stop cleaning.

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