A sticking wall air device for preventing high temperature corrosion of boiler water cooling wall

Abstract

The utility model discloses a prevent boiler water cooling wall high temperature corrosion pasting wall air device, including water cooling wall main part, be equipped with combustor mounting hole on water cooling wall main part, the fixed pasting wall air bellow of water cooling wall main part, pasting wall air bellow position combustor mounting hole's all around, pasting wall air bellow front side fixed have air deflector, pasting wall air bellow rear side intercommunication secondary air pipe, pasting wall air bellow inside activity is equipped with movable screw rod. This prevent boiler water cooling wall high temperature corrosion pasting wall air device, can adjust pasting wall air bellow on air outlet no.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a device for preventing high-temperature corrosion of boiler water-cooled walls by wall-mounted air. Background Technology

[0002] High-temperature corrosion of water-cooled walls is a common problem in coal-fired boilers. In particular, high-temperature corrosion of the water-cooled walls in the burner area has become a widespread issue in coal-fired power plant boilers. Due to uneven combustion within the furnace, the localized temperature near the water-cooled walls in the burner area can be very high, leading to increased surface temperature of the water-cooled walls. Under these high temperatures, the metal tubing of the water-cooled walls is prone to aging, resulting in reduced resistance to wear and corrosion. After high-temperature corrosion occurs in the burner area, the wall thickness of the water-cooled walls decreases, reducing their strength and increasing the risk of leaks and tube ruptures, thus affecting the safe operation of the boiler unit.

[0003] Wall-mounted air is an effective method to solve the problem of high-temperature corrosion of water-cooled walls. Currently, most traditional wall-mounted air devices can only blow air in one direction during operation, and it is inconvenient to adjust the direction of air blowing in the burner area. The blowing operation can easily affect the normal combustion in the furnace, thereby affecting the boiler combustion efficiency. Therefore, we have proposed a wall-mounted air device to prevent high-temperature corrosion of boiler water-cooled walls in order to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a wall-mounted air device to prevent high-temperature corrosion of boiler water-cooled walls, thereby solving the problem mentioned in the background art that the current wall-mounted air device is inconvenient to adjust the air blowing direction and easily affects the normal combustion in the furnace.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wall-mounted air device for preventing high-temperature corrosion of boiler water-cooled walls, comprising a water-cooled wall body, a burner mounting hole on the water-cooled wall body, a wall-mounted air box fixed on the water-cooled wall body, the wall-mounted air box being positioned around the burner mounting hole, a guide plate fixed to the front side of the wall-mounted air box, a secondary air duct connected to the rear side of the wall-mounted air box, a movable screw movably disposed inside the wall-mounted air box, and a rotating bolt head fixed to the outer end of the movable screw, the rotating bolt head being located outside the wall-mounted air box, a positioning rod fixed inside the wall-mounted air box, a partition plate connected to the movable screw and the positioning rod, the partition plate being located inside the wall-mounted air box, and an air outlet one and an air outlet two being opened on the wall-mounted air box, the air outlet one and the air outlet two being located between the guide plate and the water-cooled wall body.

[0006] Preferably, both ends of the wall-mounted air box protrude outward from the outer side of the water-cooled wall body, and the two sides of the water-cooled wall body inside the wall-mounted air box are connected.

[0007] Preferably, the partition plate is threadedly connected to the movable screw, and the partition plate is slidably connected to the positioning rod.

[0008] Preferably, the movable screw is located in the middle of the wall-mounted air box, and the positioning rods are symmetrically arranged on both sides of the movable screw inside the wall-mounted air box.

[0009] Preferably, the first air outlet and the second air outlet are respectively located on the upper and lower sides of the wall-mounted air box, and the air outlet direction of the first air outlet and the second air outlet is the same as the axial direction of the water-cooled wall body.

[0010] Preferably, the air guide plate has parallel arc-shaped through grooves arranged in parallel, and the arc-shaped through grooves face the air outlet one and the air outlet two. The air guide plate is arranged parallel to the water-cooled wall body.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) The wall-mounted air device for preventing high-temperature corrosion of boiler water-cooled walls is set around the burner mounting holes. At the same time, a partition plate is set inside the wall-mounted air box. The partition plate can be stably changed in position by a movable screw and a positioning rod, thereby adjusting the air volume of air outlet one and air outlet two on the wall-mounted air box, and even the opening and closing of air outlet one and air outlet two, so that the wall-mounted air device can be applied to the area around the burner. The air blowing direction of the wall-mounted air device is always towards the axial direction of the water-cooled wall body. By adjusting the direction of the air outlet, the wall-mounted air can be effectively prevented from affecting the normal combustion of the furnace, thereby avoiding affecting the boiler combustion efficiency.

[0013] (2) A guide plate is also provided on the wall-mounted air box. The air blower can be guided by the rows of arc-shaped grooves on the guide plate, which can effectively strengthen the blowing intensity of the wall-mounted air and thus improve the working effect of the wall-mounted air. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the working structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the working structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the wall-mounted air box structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the wall-mounted air box of this utility model;

[0018] Figure 5 This is a cross-sectional view of the wall-mounted air box of this utility model;

[0019] Figure 6 This is a cross-sectional view of the wall-mounted air box of this utility model.

[0020] In the diagram: 1. Water-cooled wall body; 2. Burner mounting hole; 3. Wall-mounted air box; 4. Air guide plate; 5. Secondary air duct; 6. Rotating bolt head; 7. Movable screw; 8. Positioning rod; 9. Partition plate; 10. Air outlet one; 11. Air outlet two. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-6 This utility model provides a technical solution: a wall-mounted air device for preventing high-temperature corrosion of boiler water-cooled walls, including a water-cooled wall body 1, a burner mounting hole 2 on the water-cooled wall body 1, and a wall-mounted air box 3 fixed on the water-cooled wall body 1, with the wall-mounted air box 3 positioned around the burner mounting hole 2.

[0023] Furthermore, both ends of the wall-mounted air box 3 protrude outward from the outer side of the water-cooled wall body 1, and the two sides of the water-cooled wall body 1 inside the wall-mounted air box 3 are connected, so that the air blown out by the secondary air duct 5 can be collected in the wall-mounted air box 3, thereby strengthening the blowing intensity of the air outlet.

[0024] A guide plate 4 is fixed to the front side of the wall-mounted air box 3, and a secondary air duct 5 is connected to the rear side of the wall-mounted air box 3. A movable screw 7 is movably installed inside the wall-mounted air box 3, and a rotating bolt head 6 is fixed to the outer end of the movable screw 7. The rotating bolt head 6 is located outside the wall-mounted air box 3. A positioning rod 8 is fixed inside the wall-mounted air box 3. A partition plate 9 is connected to the movable screw 7 and the positioning rod 8. The partition plate 9 is located inside the wall-mounted air box 3.

[0025] Furthermore, the partition plate 9 is threadedly connected to the movable screw 7, and the partition plate 9 is slidably connected to the positioning rod 8, so that the partition plate 9 can move up and down under the stabilizing effect of the positioning rod 8 by rotating the movable screw 7.

[0026] Furthermore, the movable screw 7 is located in the middle of the wall-mounted air box 3, and the positioning rods 8 are symmetrically arranged on both sides of the movable screw 7 inside the wall-mounted air box 3. The movable screw 7 and the positioning rods 8 ensure that the partition plate 9 moves stably up and down inside the wall-mounted air box 3.

[0027] The wall-mounted air box 3 has an air outlet 10 and an air outlet 21, which are located between the air guide plate 4 and the water-cooled wall body 1.

[0028] Furthermore, air outlet 10 and air outlet 21 are respectively located on the upper and lower sides of the wall-mounted air box 3, enabling bidirectional airflow from both sides of the wall-mounted air box 3, increasing the functionality of the wall-mounted air box 3. Moreover, the airflow direction of air outlet 10 and air outlet 21 is the same as the axis of the water-cooled wall body 1, ensuring that the air blown out by the wall-mounted air box 3 can follow the axis of the water-cooled wall body 1, thereby effectively reducing the attenuation of the wall-mounted air caused by the obstruction of the wall-mounted air by the axis of the water-cooled wall body 1, and ensuring the working efficiency of the wall-mounted air.

[0029] Furthermore, the air guide plate 4 has parallel arc-shaped channels arranged on it, and the arc-shaped channels face the air outlet 10 and the air outlet 11. The air guide plate 4 is set parallel to the water-cooled wall body 1, which can guide the blown air against the wall and further enhance the blowing intensity of the air against the wall.

[0030] Specifically, when using the wall-adhering air device to prevent high-temperature corrosion of boiler water-cooled walls, first fix the wall-adhering air box 3 to the burner mounting hole 2 on the main body of the water-cooled wall 1 to ensure that the wall-adhering air can generate a stable wall-adhering air around the burner when it is working.

[0031] When setting up the wall-mounted air box 3, it is necessary to ensure that the wall-mounted air direction is oriented towards the axial direction of the water-cooled wall body 1. If the axial direction of the water-cooled wall body 1 is set vertically, the wall-mounted air boxes 3 set on the left and right sides of the burner mounting hole 2 will have the internal partition plate 9 of the adjuster in the middle position, so that the air outlet 10 and air outlet 21 on the upper and lower sides of the wall-mounted air box 3 can blow out wall-mounted air, realizing bidirectional air blowing. However, the wall-mounted air boxes 3 located above and below the burner mounting hole 2 need to adjust the position of the partition plate 9 to close the air outlet on the wall-mounted air box 3 that is close to the burner mounting hole 2, so that the wall-mounted air box 3 can only blow air in one direction to the upper and lower outer sides of the burner mounting hole 2. This ensures that the wall-mounted air boxes 3 around the burner mounting hole 2 blow wall-mounted air towards the axial direction of the water-cooled wall body 1, while avoiding the wall-mounted air acting on the burner, ensuring normal combustion in the furnace and avoiding affecting the boiler combustion efficiency.

[0032] When adjusting the position of the partition plate 9, rotate the rotating bolt head 6 on the wall-mounted air box 3 to rotate the movable screw 7 inside the wall-mounted air box 3. The partition plate 9 will then move up and down stably under the action of the positioning rod 8. When the partition plate 9 moves to the inner side position of the wall-mounted air box 3, it can block the air outlet 10 or the air outlet 11 on one side of the wall-mounted air box 3, so as to realize the unidirectional air blowing operation of the wall-mounted air box 3.

[0033] When the wall-mounted air device is in operation, secondary air is blown into the wall-mounted air box 3 through the secondary air duct 5. The wall-mounted air box 3 collects the blown secondary air to enhance the intensity of the blown wall-mounted air. The secondary air in the wall-mounted air box 3 is then blown out axially towards the water-cooled wall body 1 through the air outlet 10 or the air outlet 11. Under the action of the air guide plate 4, the blown secondary air forms a stable wall-mounted air around the burner, effectively reducing the high-temperature corrosion of the water-cooled wall body 1 around the burner.

[0034] The above describes the working process of the wall-mounted ventilation device. Any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A device for preventing high-temperature corrosion of boiler water-cooled walls by wall-adhering air, comprising a water-cooled wall body (1), wherein the water-cooled wall body (1) is provided with burner mounting holes (2), characterized in that: A wall-mounted air box (3) is fixed on the water-cooled wall body (1), and the wall-mounted air box (3) is located around the burner mounting hole (2); A guide plate (4) is fixed to the front side of the wall-mounted air box (3), and a secondary air duct (5) is connected to the rear side of the wall-mounted air box (3). A movable screw (7) is movably provided inside the wall-mounted air box (3), and a rotating bolt head (6) is fixed to the outer end of the movable screw (7). The rotating bolt head (6) is located outside the wall-mounted air box (3). A positioning rod (8) is fixed inside the wall-mounted air box (3). A partition plate (9) is connected to the movable screw (7) and the positioning rod (8). The partition plate (9) is located inside the wall-mounted air box (3). The wall-mounted air box (3) is provided with an air outlet one (10) and an air outlet two (11), and the air outlet one (10) and the air outlet two (11) are located between the air guide plate (4) and the water-cooled wall body (1).

2. The wall-mounted air device for preventing high-temperature corrosion of boiler water-cooled walls according to claim 1, characterized in that: Both ends of the wall-mounted air box (3) protrude outward from the outside of the water-cooled wall body (1), and the two sides of the water-cooled wall body (1) inside the wall-mounted air box (3) are connected.

3. The wall-mounted air device for preventing high-temperature corrosion of boiler water-cooled walls according to claim 1, characterized in that: The partition plate (9) is threadedly connected to the movable screw (7), and the partition plate (9) is slidably connected to the positioning rod (8).

4. The wall-mounted air device for preventing high-temperature corrosion of boiler water-cooled walls according to claim 3, characterized in that: The movable screw (7) is located in the middle of the wall-mounted air box (3), and the positioning rod (8) is symmetrically arranged on both sides of the movable screw (7) inside the wall-mounted air box (3).

5. The wall-mounted air device for preventing high-temperature corrosion of boiler water-cooled walls according to claim 1, characterized in that: The first air outlet (10) and the second air outlet (11) are respectively opened on the upper and lower sides of the wall-mounted air box (3), and the air outlet direction of the first air outlet (10) and the second air outlet (11) is the same as the axial direction of the water-cooled wall body (1).

6. The wall-mounted air device for preventing high-temperature corrosion of boiler water-cooled walls according to claim 1, characterized in that: The air guide plate (4) has parallel arc-shaped through grooves arranged on it, and the arc-shaped through grooves face the air outlet one (10) and the air outlet two (11). The air guide plate (4) is arranged parallel to the water-cooled wall body (1).

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