Automatic soot blower for air pre-heater

Abstract

The utility model relates to the technical field of cleaning equipment, in particular to an automatic soot blower of an air pre-heater, which comprises a straight tube, two ends of the straight tube are open, a flat nozzle tube is rotatably mounted at one end of the outside of the straight tube, and a sealing cover for sealing is mounted at the other end of the outside of the straight tube. A piston cylinder is installed at the end, close to the interior of the flat nozzle pipe, of the straight cylinder pipe, and an annular frame is installed in the piston cylinder. The smoke detector has the advantages that the smoke detector is composed of the straight tube and the flat nozzle tube, a group of gears are mounted between the straight tube and the flat nozzle tube, so that the flat nozzle tube can rotate, the piston tube is mounted at one end in the straight tube, the ring frame is mounted in the straight tube, the mounting frame is mounted on one side outside the ring frame, the extension rod is mounted on the mounting frame, and the smoke detector is mounted at the outer end of the extension rod. The smoke detector extends into the air pre-heater, the smoke concentration can be detected by the smoke detector, the air inflow of the device is controlled according to the concentration height, and air can be blown to other positions of the air pre-heater along with rotation of the flat nozzle pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to an automatic soot blowing device for an air preheater. Background Art

[0002] The air preheater, also simply referred to as the air heater, is a preheating device that improves the heat exchange performance of the boiler and reduces heat loss. The function of the air preheater is to transfer the heat carried in the flue gas discharged from the tail flue of the boiler to the air before entering the boiler through the heat sink, and preheat the air to a certain temperature.

[0003] During the production operation of the boiler, ash deposition is likely to occur on the surfaces of its heating surfaces (including water walls, superheaters, economizers, preheaters, flue ducts, etc.), increasing the heat transfer resistance and resulting in a decrease in the boiler thermal efficiency. The research and application of devices such as steam soot blowers, compressed air soot blowers, and acetylene soot blowers have greatly solved the problem of ash deposition on the heating surfaces of the boiler. However, for the currently used devices, the air intake volume and intake timing are not convenient to control, which will cause a certain working load and affect the working efficiency. Based on this, this application proposes an automatic soot blowing device for an air preheater to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an automatic soot blowing device for an air preheater.

[0005] The purpose of the utility model is achieved through the following technical solutions: an automatic soot blowing device for an air preheater, including a straight tube with both ends open. One end of the outer part of the straight tube is rotatably installed with a flat nozzle tube, and the other end of the outer part of the straight tube is installed with a sealing cover. One end of the straight tube close to the inside of the flat nozzle tube is installed with a piston cylinder, and a ring frame is installed inside it. On one side of the outside of the ring frame, a piston driven by a telescopic motor to perform reciprocating motion is installed, and a plurality of sealing rings are installed on its outside. On the other side of the outside of the ring frame, an extension rod is installed, and a smoke detector is installed at its outer end. The smoke detector extends into the air preheater. An ignition device is installed on the outside of the straight tube, a fixed tube is installed on the outside of the sealing cover, and an electromagnetic valve is installed at the outer end of the fixed tube.

[0006] Optionally, a flange plate is installed at one end of the straight tube close to the outside of the piston cylinder, and a plurality of through holes arranged in a circumferential array are opened on it.

[0007] Optionally, an assembly groove is opened on the outside of the straight tube close to the flange plate. One end of the outside of the flat nozzle tube is rotationally matched with the assembly groove. The other end of the outside of the flat nozzle tube shrinks inward to form a long flat shape. A gear driven by a motor to rotate is installed on the outside of the flange plate, and a toothed ring is installed on the outside of the flat nozzle tube, which meshes with the gear.

[0008] Optionally, a mounting frame is installed on one side of the outside of the ring frame, and one side of the outside of the ring frame is contracted inwardly into a cone shape, and the extension rod is threadedly installed on the cone end of the mounting frame.

[0009] Optionally, a pressure gauge is installed on one side of the outside of the straight tube.

[0010] The utility model has the following advantages:

[0011] The automatic soot blowing device of the air preheater is composed of a straight tube and a flat nozzle tube, a group of gears are installed between the two, so that the flat nozzle tube can rotate, a piston cylinder is installed at one end inside the straight tube, a ring frame is installed inside the piston cylinder, a mounting frame is installed on one side outside the ring frame, a stretching rod is installed on the mounting frame, a smoke detector is installed on the outer end of the stretching rod, and the smoke detector is extended into the air preheater to detect the concentration of smoke, and the air intake of the device is controlled according to the concentration. With the rotation of the flat nozzle tube, air can be blown to other positions of the air preheater.

[0012] A sealing cover is installed at the other end of the straight tube, and an electromagnetic valve is installed on the outside of the cover to control the intake volume of the combustible gas. A piston driven by a telescopic motor is installed on the other side of the ring frame. It cooperates closely with the piston cylinder. An ignition device and a pressure gauge are installed on the outside of the straight tube. When in use, combustible gas is filled into the straight tube, and the pressure gauge monitors the air pressure to avoid excessive air pressure. When blowing is required, the ignition device ignites the combustible gas, and the piston extends from the piston cylinder, so that the high-pressure gas generated by the combustion is ejected from the piston cylinder, and the gas blows soot to the air preheater.

[0013] A flange plate is installed at one end of the straight tube close to the outside of the flat nozzle tube, through which the device can be installed together with the air preheater, so that the device meets the needs of actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model from a first perspective;

[0015] Figure 2 It is a second perspective schematic diagram of the overall structure of the utility model;

[0016] Figure 3 For the utility model Figure 1 A schematic cross-sectional structure diagram of ;

[0017] Figure 4 This is a schematic diagram of the overall structure of the straight tube in the utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the straight tube in the utility model;

[0019] Figure 6This is a schematic diagram of the overall structure of the combined state of the middle ring frame, mounting frame and extension rod of the present utility model.

[0020] In the figure: 1 - straight tube, 2 - flat nozzle tube, 3 - cover, 4 - ignition device, 5 - pressure gauge, 6 - motor, 7 - gear, 8 - extension rod, 9 - smoke detector, 10 - electromagnetic valve, 11 - gear ring, 12 - telescopic motor, 13 - piston, 14 - middle ring frame, 15 - assembly groove, 16 - piston cylinder, 17 - fixed tube, 18 - mounting frame, 19 - flange plate. Specific embodiments

[0021] The following further describes the present utility model with reference to the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

[0022] As Figures 1 to 6 shown, an air preheater automatic soot blowing device includes a straight tube 1 with both ends open. One end outside the straight tube 1 is rotatably installed with a flat nozzle tube 2, and the other end outside the straight tube 1 is installed with a cover 3 for sealing. One end of the straight tube 1 close to the inside of the flat nozzle tube 2 is installed with a piston cylinder 16, and a middle ring frame 14 is installed inside it. One side outside the middle ring frame 14 is installed with a piston 13 that reciprocates driven by a telescopic motor 12, and a plurality of sealing rings are installed outside it. The other side outside the middle ring frame 14 is installed with an extension rod 8, and a smoke detector 9 is installed at its outer end. The smoke detector 9 extends into the air preheater. An ignition device 4 is installed outside the straight tube 1, and a fixed tube 17 is installed outside the cover 3, and an electromagnetic valve 10 is installed at the outer end of the fixed tube 17.

[0023] As an optional technical solution of the present utility model, a flange plate 19 is installed at one end of the straight tube 1 close to the outside of the piston cylinder 16, and a plurality of through holes arranged in a circumferential array are opened on it, which is convenient for assembling the device with the air inlet of the air preheater. And in order to ensure better sealing between the two, a sealing member can be added between the two components to improve the sealing performance.

[0024] As an optional technical solution of the present utility model, an assembly groove 15 is opened on the outside of the straight tube 1 close to the flange plate 19. One end outside the flat nozzle tube 2 is rotationally matched with the assembly groove 15. The other end outside the flat nozzle tube 2 shrinks inward to form a long flat shape. A gear 7 driven by a motor 6 to rotate is installed outside the flange plate 19. A gear ring 11 is installed outside the flat nozzle tube 2, and it meshes with the gear 7. After the flat nozzle tube 2 is matched with the assembly groove 15, the rotation of the flat nozzle tube 2 can be limited to avoid its shaking. At the same time, after the gear 7 meshes with the gear ring 11, the rotation of the flat nozzle tube 2 can be realized. In actual use, it is necessary to ensure better sealing between the straight tube 1 and the flat nozzle tube 2 to avoid air leakage.

[0025] As an alternative technical solution of the present utility model, a mounting bracket 18 is installed on one side outside the ring bracket 14, and one side outside it is contracted inward to form a cone. The extension rod 8 is threadedly installed at the conical end of the mounting bracket 18, which facilitates the installation and disassembly of the extension rod 8 and ensures that the size of the extension rod 8 is appropriate, enabling it to extend from the flat nozzle tube 2 and avoiding position interference between the two.

[0026] As an alternative technical solution of the present utility model, a pressure gauge 5 is installed on one side outside the straight tube 1, and the pressure gauge 5 can monitor the pressure of the combustible gas in the straight tube 1 to avoid the occurrence of engine knocking and meet the actual use requirements.

[0027] In summary, the features, assembly methods, usage processes, and functions achieved by the various components in the present utility model are as follows: It is composed of a straight tube 1 and a flat nozzle tube 2, and a set of gears are installed between the two, enabling the flat nozzle tube 2 to rotate. A piston cylinder 16 is installed at one end inside the straight tube 1, and a ring bracket 14 is installed inside it. A mounting bracket 18 is installed on one side outside the ring bracket 14, and an extension rod 8 is installed on it. A smoke detector 9 is installed at the outer end of the extension rod 8. By extending the smoke detector 9 into the air preheater, the concentration of the flue gas can be detected by it, and the intake air volume of the device can be controlled according to the height of the concentration. Moreover, as the flat nozzle tube 2 rotates, other positions of the air preheater can be blown. A cover 3 is installed at the other end outside the straight tube 1, and an electromagnetic valve 10 is installed on its outer side, which can control the intake air volume of the combustible gas. A piston 13 driven by a telescopic motor 12 is installed on the other side outside the ring bracket 14, and it closely cooperates with the piston cylinder 16. An ignition device 4 and a pressure gauge 5 are installed outside the straight tube 1. During use, combustible gas is filled into the straight tube 1, and the pressure gauge 5 monitors the pressure magnitude to avoid excessive pressure. When blowing is required, the ignition device 4 ignites the combustible gas, and the piston 13 extends out from the piston cylinder 16 accordingly, causing the high-pressure gas generated by combustion to be ejected from the piston cylinder 16, and the gas blows the ash of the air preheater. A flange plate 19 is installed at one end of the straight tube 1 close to the outside of the flat nozzle tube 2, which can install the device on the air preheater, enabling the device to meet the actual use requirements.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic sootblowing device for an air preheater, characterized in that: The invention comprises a straight tube (1) with both ends being open. A flat nozzle tube (2) is rotatably mounted on one end of the straight tube (1). A sealing cover (3) for sealing is mounted on the other end of the straight tube (1). A piston cylinder (16) is mounted on one end of the straight tube (1) close to the inside of the flat nozzle tube (2). A ring frame (14) is mounted inside the straight tube (1). A piston (13) driven by a telescopic motor (12) to perform reciprocating motion is mounted on one side of the ring frame (14). A plurality of sealing rings are mounted on the outside of the ring frame (14). A stretching rod (8) is mounted on the other side of the ring frame (14). A smoke detector (9) is mounted on the outer end of the stretching rod. The smoke detector (9) extends into the air preheater. An ignition device (4) is mounted on the outside of the straight tube (1). A fixed tube (17) is mounted on the outside of the sealing cover (3). An electromagnetic valve (10) is mounted on the outer end of the fixed tube (17).

2. The automatic sootblowing device for an air preheater according to claim 1, characterized in that: A flange plate (19) is installed at one end of the straight tube (1) close to the outside of the piston tube (16), and a plurality of through holes in a circumferential array are opened on the flange plate.

3. The automatic soot blowing device for air preheater according to claim 2, characterized in that: The straight tube (1) is provided with an assembly groove (15) on the outside near the flange plate (19); one end of the outside of the flat nozzle tube (2) is rotatably matched with the assembly groove (15); the other end of the outside of the flat nozzle tube (2) is contracted inwardly to form a long flat shape; a gear (7) driven to rotate by a motor (6) is installed on the outside of the flange plate (19); and a gear ring (11) is installed on the outside of the flat nozzle tube (2) and meshes with the gear (7).

4. The automatic sootblowing device for air preheater according to claim 1, characterized in that: A mounting frame (18) is installed on one side of the outside of the ring frame (14), and one side of the outside of the ring frame (14) is contracted inwardly into a cone shape. The extension rod (8) is threadedly installed on the cone end of the mounting frame (18).

5. The automatic soot blowing device for air preheater according to claim 1, characterized in that: A pressure gauge (5) is installed on one side of the outside of the straight tube (1).

Images