Anti-blocking system for flow meter of hot air pipeline of sludge incineration boiler

Abstract

The utility model discloses an anti-blocking system for a flow meter of a hot air pipeline of a sludge incineration boiler, belongs to the technical field of hot air pipelines of boilers, and solves the problems that the accuracy of air quantity measurement is obviously reduced due to deposition and blockage of static pressure and dynamic pressure guide holes of an air quantity sensor, and further normal operation of the boiler is possibly interfered. And even the boiler efficiency can be reduced, faults occur frequently, and finally great economic losses are caused. Comprising a vertically-arranged air duct, an air volume sensor fixedly connected to the peripheral wall of the air duct and an air pipeline communicating the air volume sensor with the air duct, and further comprises an anti-blocking assembly. The electromagnet is controlled to be powered on to generate magnetic force, the metal spring is compressed to drive the piston to move, the gas storage volume is increased, more gas is sucked, the electromagnet is powered off after the valve is closed, the spring releases elastic force to enable the piston to reversely push the gas, the gas and possibly-blocked solid particles are discharged through the connecting pipe, and the accuracy of the air volume sensor is kept. The boiler working efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler hot air pipelines, in particular to a flow meter anti-blocking system for hot air pipelines of sludge incineration boilers. Background Art

[0002] During the design process of sludge incineration power plants, it is usually considered to transfer the waste gas generated by the sludge treatment workshop through pipelines to the primary and secondary air configurations of the boiler system to achieve centralized incineration treatment. These waste gases contain a variety of components, such as water vapor, acidic compounds, water-soluble volatile organic compounds (VOCs), and suspended dust particles. During the operation of the boiler, it is crucial to ensure the proper air volume because it is directly related to the efficiency and stability of the boiler.

[0003] At present, the measurement of air volume mainly relies on the differential pressure principle. However, in a long-term operation environment, due to the presence of humidity, acidic substances and dust in the gas, these factors can easily cause deposition and blockage of the static pressure and dynamic pressure holes of the air volume sensor. This situation will significantly reduce the accuracy of air volume measurement, which may interfere with the normal operation of the boiler, and may even cause a decrease in boiler efficiency and frequent failures, ultimately resulting in significant economic losses.

[0004] Therefore, a sludge incineration boiler hot air duct flow meter anti-blocking system is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a sludge incineration boiler hot air pipeline flow meter anti-blocking system.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A sludge incineration boiler hot air duct flow meter anti-blocking system comprises a vertically arranged air duct, an air volume sensor fixedly connected to the outer peripheral wall of the air duct, and an air duct connecting the air volume sensor and the air duct, and also comprises an anti-blocking component, wherein the anti-blocking component takes the airflow in the air duct and pressurizes it before squeezing it into the air duct through the air duct.

[0008] Preferably, the anti-blocking component includes an air inlet pipe connected to the air duct, a valve connected thereto, a vertical pipe connected to the valve, a flared pipe connected to the vertical pipe, and an air storage pipe connected to the flared pipe, the air storage pipe is provided with an adjustment member for adjusting the available volume therein, and the vertical pipe is connected to the air duct via a connecting pipe.

[0009] Preferably, the regulating member comprises a piston slidably connected to the gas storage pipe, an electromagnet fixedly connected to the end of the vertical pipe away from the expanding pipe, and a metal spring arranged therebetween; the end of the vertical pipe away from the expanding pipe is fixedly connected to an air outlet pipe communicating with the interior.

[0010] Preferably, the anti-blocking component also includes a plurality of bases fixedly connected to the outside of the vertical pipe.

[0011] Preferably, the diameter of the connecting pipe is smaller than the diameter of the vertical pipe.

[0012] Preferably, it also includes an air inlet pipe, which is fixedly connected to the outer peripheral wall of the lower end of the air duct and is connected to the inside of the air duct.

[0013] The utility model has the following beneficial effects:

[0014] The utility model can control the power supply to the electromagnet to generate magnetic force, so that the metal spring is attracted by the magnetic force and compressed, and then drive the piston located at the upper end of the metal spring to move in the gas storage pipe, thereby increasing the available volume therein and sucking more gas from the air duct into it. After the valve is closed, the power supply to the electromagnet is also disconnected, so that the metal spring loses the magnetic compression and then releases the elastic potential energy. The released elastic force acts on the piston, causing the piston to move in the opposite direction to push the gas out, and the gas enters the air duct through the connecting pipe, and solid particles that may be blocked in the air duct are driven out of it under the impact of the pressurized airflow, thereby avoiding errors in the detection data of the air volume sensor due to the blockage of the air duct, which ultimately affects the production efficiency of the entire boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0018] 1. Air duct; 2. Air inlet pipe; 3. Air volume sensor; 4. Air duct; 5. Air inlet pipe; 6. Valve; 7. Vertical pipe; 8. Expanding pipe; 9. Air storage pipe; 10. Base; 11. Piston; 12. Metal spring; 13. Electromagnet; 14. Air outlet pipe. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] A sludge incineration boiler hot air duct flow meter anti-blocking system, such as Figure 1 As shown, it includes a vertically arranged air duct 1, an air volume sensor 3 fixedly connected to the outer peripheral wall of the air duct 1, an air duct 4 connecting the air volume sensor 3 and the air duct 1, and an air inlet pipe 2, the air inlet pipe 2 is fixedly connected to the outer peripheral wall of the lower end of the air duct 1, and is connected to the inside of the air duct 1.

[0021] like Figure 2 and 3 As shown, it also includes an anti-blocking component, which takes the airflow in the air duct 1 and pressurizes it before squeezing it into the air duct 1 through the air duct 4.

[0022] The anti-blocking component includes an air intake pipe 5 connected to the air duct 1, a valve 6 connected thereto, a vertical pipe 7 connected to the valve 6, a flared pipe 8 connected to the vertical pipe 7, an air storage pipe 9 connected to the flared pipe 8, and a plurality of bases 10 fixedly connected to the outside of the vertical pipe 7. The air intake pipe 5 is a horizontally arranged alloy pipe, and its central axis passes through the central axis of the air duct 1, and the two are arranged vertically. The valve 6 is a ball valve, and the vertical pipe 7 is a vertically arranged alloy pipe, and its diameter is the same as that of the air intake pipe 5. The flared pipe 8 is frustum-shaped, and its smallest end is connected to the vertical pipe 7, and its largest end is connected to the air storage pipe 9. The bottom end of the air storage pipe 9 is closed. It should be noted that the air duct 4 and the connecting pipe are both hard pipes made of metal, not hoses, and the vertical pipe 7 is connected to the air duct 4 through the connecting pipe, and the diameter of the connecting pipe is smaller than the diameter of the vertical pipe 7.

[0023] An adjustment member for adjusting the available volume therein is provided in the gas storage pipe 9, and the adjustment member includes a piston 11 slidably connected to the gas storage pipe 9, an electromagnet 13 fixedly connected to the end of the vertical pipe 7 away from the flared pipe 8, and a metal spring 12 arranged therebetween. The piston 11 is cylindrical, and a plurality of embedding grooves are provided on its outer peripheral wall. A sealing rubber ring is interference fit in the embedding groove, and the outer ring of the sealing rubber ring is in contact with the inner wall of the gas storage pipe 9. Two gas outlet pipes 14 connected to the interior are fixedly connected to the end of the vertical pipe 7 away from the flared pipe 8, and the two gas outlet pipes 14 are symmetrically arranged around the central axis of the gas storage pipe 9.

[0024] During actual use, the air inlet pipe 2 will guide the air flow into the vertically arranged air duct 1. Since the gas itself has a high temperature and a large buoyancy, and the subsequent gas will push the gas in front forward, the overall air flow will rise. In this process, the air volume sensor 3 determines the pressure difference between the two based on the differential pressure principle through the air duct 4. When the air duct 4 is blocked, problems will arise in the air pressure change in the air duct 4.

[0025] At this time, the electromagnet 13 is energized. Once the electromagnet 13 generates magnetic force, it will generate magnetic force on the metal spring 12. The metal spring 12 is not subjected to a single part of the magnetic force, but the entire metal spring 12 will be affected by the force, causing the metal spring 12 to begin to compress, and even the metal piston 11 will be attracted by the magnetic force, so that both of them move closer to the electromagnet 13.

[0026] During this process, the piston 11 always maintains a relatively sealed state with the inner wall of the gas storage pipe 9 by the setting of the sealing rubber ring. In this way, when the piston 11 moves downward, the space between it and the bottom surface of the gas storage pipe 9 will be reduced, and then the air will be squeezed to leave through the outlet pipe 14, and the available volume in the gas storage pipe 9 above the piston 11 will increase, so that the gas enters the gas storage pipe 9 through the intake pipe 5, the valve 6, the vertical pipe 7, and the expansion pipe 8 in this order, and due to the setting of the expansion pipe 8, it can accommodate a gas storage pipe 9 with a larger diameter, so that the anti-blocking component can store more gas.

[0027] Then, the valve 6 is closed to block the path between the vertical pipe 7 and the air inlet pipe 5 , and the gas can only leave through the path of the vertical pipe 7 , the connecting pipe, and the air duct 4 .

[0028] Then, the power to the electromagnet 13 is disconnected. At this time, the electromagnet 13 loses its magnetic force, and the metal spring 12 releases its elastic potential energy in an instant. The huge force acts on the piston 11, causing the piston 11 to move upward in the discharge pipe, quickly compressing the available volume therein. At the same time, when the gas leaves the gas storage pipe 9, through the setting of the expansion pipe 8, the gas flow rate will also increase sharply due to the reduction in the pipe diameter, so that the air flow speed entering the air duct 4 through the connecting pipe is extremely fast and has a large mechanical potential energy. Therefore, the air flow can blow away the solid particles in the air duct 4 to avoid blockage therein, which ultimately affects the use of the entire boiler.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sludge incineration boiler hot air duct flow meter anti-blocking system, It is characterized in that The invention comprises a vertically arranged air duct (1), an air volume sensor (3) fixedly connected to the outer peripheral wall of the air duct (1), and an air duct (4) connecting the air volume sensor (3) and the air duct (1), and also comprises an anti-blocking component, wherein the anti-blocking component takes the air flow in the air duct (1), pressurizes the air flow, and squeezes the air flow into the air duct (1) through the air duct (4).

2. A sludge incineration boiler hot air duct flow meter anti-blocking system according to claim 1, It is characterized in that The anti-blocking component comprises an air inlet pipe (5) connected to the air duct (1), a valve (6) connected thereto, a vertical pipe (7) connected to the valve (6), an expansion pipe (8) connected to the vertical pipe (7), and an air storage pipe (9) connected to the expansion pipe (8); an adjusting member for adjusting the available volume therein is provided in the air storage pipe (9), and the vertical pipe (7) is connected to the air duct (4) via a connecting pipe.

3. A sludge incineration boiler hot air duct flow meter anti-blocking system according to claim 2, It is characterized in that The regulating member comprises a piston (11) slidably connected to the gas storage pipe (9), an electromagnet (13) fixedly connected to the end of the vertical pipe (7) away from the expanding pipe (8), and a metal spring (12) arranged between the two. The end of the vertical pipe (7) away from the expanding pipe (8) is fixedly connected to an air outlet pipe (14) communicating with the interior.

4. A sludge incineration boiler hot air duct flow meter anti-blocking system according to claim 2, It is characterized in that The anti-blocking assembly also includes a plurality of bases (10) fixedly connected to the outside of the vertical pipe (7).

5. A sludge incineration boiler hot air duct flow meter anti-blocking system according to claim 2, It is characterized in that The diameter of the connecting pipe is smaller than the diameter of the vertical pipe (7).

6. A sludge incineration boiler hot air duct flow meter anti-blocking system according to claim 1, It is characterized in that It also comprises an air inlet pipe (2), which is fixedly connected to the outer peripheral wall of the lower end of the air duct (1) and is arranged in communication with the interior of the air duct (1).

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