Multi-mode disc-shooting soot blower

Abstract

The utility model discloses a multi-mode disc jet soot blower which comprises a jet disc body, the jet disc body comprises a sweeping upper portion, a sweeping middle portion and a sweeping lower portion, the sweeping upper portion comprises an upper end cover and sweeping jet blades, the sweeping middle portion comprises a middle housing and a generating head, and the sweeping lower portion comprises a bottom end cover, flow deflectors and a fixed bottom plate. Every two adjacent strafing blades directly form a strafing air channel, and the strafing air channel is of a gradually-enlarged structure from the end close to the center of the upper end cover to the end away from the center of the upper end cover. The number of the flow deflectors is multiple, and a Laval spray hole is formed between every two adjacent flow deflectors. Accumulated dust is removed through high-speed air flow through the air sweeping channel and the laval spraying hole, but the action range of the air flow is relatively small, so that the generation head is additionally arranged, an air source is converted into high-frequency sound waves through the generation head to blow away the accumulated dust, and the purpose that the high-speed air flow and the high-strength sound waves jointly remove the accumulated dust is achieved; and the ash removal range is widened while the ash removal strength is ensured.

Description

Technical Field

[0001] This utility model relates to the field of boiler soot blowers, specifically a multi-mode disc soot blower. Background Technology

[0002] Boiler heating surface ash refers to unmelted solid ash particles deposited on the heating surfaces, mainly occurring on boiler tube panels, reheaters, and flame deflectors. Heating surface ash has become a significant factor hindering the safe operation of boilers. Furthermore, after prolonged heating, the solid ash particles further coke, greatly reducing the soot blowing effect of the soot blowing system. Moreover, coking ash, under its own weight and the influence of furnace pressure fluctuations and airflow disturbances, can cause ash shedding and collapse, potentially damaging boiler equipment and leading to accidents such as fire suppression and shutdown. Therefore, effectively removing coking ash is crucial for ensuring the safe operation of boilers.

[0003] Traditional soot blowing technologies mainly consist of gas soot blowers or sonic soot blowers. During operation, gas soot blowers experience large oscillations throughout their stroke, making them prone to collisions with tube panels. They have high blowing pressures and are very effective at removing accumulated ash, but they can cause damage to high-temperature superheaters, final-stage reheaters, and flame deflectors, potentially leading to tube rupture in severe cases. Sonic soot blowers, on the other hand, have low blowing pressures and do not cause damage, but they are essentially ineffective at secondary dust re-entraining of coking ash, preventing it from being carried away by the flue gas. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] The technical problem this invention aims to solve is that traditional soot blowing technologies mainly rely on gas soot blowers or sonic soot blowers. Gas soot blowers experience large oscillations throughout their operation, making them prone to collisions with tube panels. While they have high blowing pressure and effectively remove accumulated ash, they can damage high-temperature superheaters, final-stage reheaters, and flame deflectors, potentially leading to tube rupture in severe cases. Sonic soot blowers, on the other hand, have low blowing pressure and do not cause damage, but they offer virtually no secondary dust re-entrainment for coking ash, resulting in the inability of coking ash to be carried away by the flue gas.

[0006] (II) Technical Solution

[0007] To solve the above problems, this utility model provides the following technical solution:

[0008] A multi-mode disc-jet soot blower, comprising a jetting disc body, the jetting disc body including an upper cleaning section, a middle cleaning section, and a lower cleaning section;

[0009] The upper cleaning section includes an upper end cover and sweeping blades;

[0010] The cleaning center includes a central cover and a generator head;

[0011] The cleaning lower part includes the bottom end cap, guide vane, and fixed base plate;

[0012] The upper end face of the sweeping blade is fixedly connected to the lower end face of the upper end cover, and the lower end face of the sweeping blade is fixedly connected to the upper end face of the middle cover.

[0013] The lower end face of the middle cover is fixedly connected to the upper end face of the bottom cover, and the generator head is disposed on the side of the middle cover.

[0014] The upper end face of the guide plate is fixedly connected to the lower end face of the bottom end cover, and the lower end face of the guide plate is fixedly connected to the lower end face of the fixed base plate.

[0015] The sweeping blades are provided in multiple ways, and two adjacent sweeping blades directly form a sweeping air duct. The sweeping air duct has a structure that gradually expands from one end near the center of the upper cover to the other end away from the center of the upper cover.

[0016] The guide vanes are provided in multiple manner, and a Laval nozzle is provided between two adjacent guide vanes.

[0017] Furthermore, the upper end cover is provided with a connection hole.

[0018] Furthermore, both the middle cover and the bottom cover are provided with a vent of the same size.

[0019] Furthermore, the generating head includes an equalizing cylinder, a connecting rod, and a resonance cover;

[0020] One end of the connecting rod is fixedly connected to the resonant cover, and a guide cone is provided at the end of the connecting rod near the gas equalization cylinder. An air inlet plate is provided on the guide cone, and multiple air inlet holes are provided on the air inlet plate. The air inlet plate is fixedly connected to the outer wall of the guide cone and the interior of the gas equalization cylinder. A guide block is also provided on the connecting rod. The cross-section of the guide block is trapezoidal, and a ventilation annular gap is provided between the outer wall of the guide block and the inner wall of the gas equalization cylinder. A compression chamber is provided between the guide block and the guide cone. A resonant cavity is formed between the connecting rod and the resonant cover.

[0021] Furthermore, the outer wall of the middle cover is provided with a plurality of through threaded holes, and the outer wall of the air equalization cylinder is also provided with threads. The air equalization cylinder is installed in the threaded holes of the middle cover through a threaded connection.

[0022] Furthermore, the fixed base plate is provided with multiple fixing slots.

[0023] Furthermore, each of the threaded holes is provided with a generating head.

[0024] (III) Beneficial Effects

[0025] The beneficial effects of this utility model are:

[0026] Both the air duct and the spray nozzles use high-speed airflow to remove accumulated dust. However, the effective range of the airflow is relatively small. Therefore, a generator head is added to convert the air source into high-frequency sound waves to blow away the accumulated dust. This achieves the goal of removing accumulated dust with both high-speed airflow and high-intensity sound waves, ensuring the cleaning intensity while also increasing the cleaning range. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present invention;

[0028] Figure 2 This is a perspective view of the present invention from another angle;

[0029] Figure 3 This is a new sectional view of the utility model;

[0030] Figure 4 This is a schematic diagram of the cleaning air duct of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the Laval nozzle of this utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the generator head of this utility model.

[0033] In the diagram, the markings are: 1-cleaning disc body, 2-vent, 101-upper part of cleaning, 102-middle part of cleaning, and 103-lower part of cleaning.

[0034] 101a - Top cover, 101b - Sweeping blades, 101c - Sweeping air duct, 101d - Connecting hole;

[0035] 102a - Middle cover, 102b - Generator head, 102d - Threaded hole;

[0036] 103a-Bottom end cap, 103b-Guide plate, 103c-Fixed base plate, 103d-Laval nozzle;

[0037] 102ba - air equalization cylinder, 102bb - connecting rod, 102bc - resonance cover, 102bd - guide cone, 102be - air inlet plate, 102bf - air inlet hole, 102bg - guide block, 102bh - ventilation ring seam, 102bj - compression chamber, 102bk - resonance chamber. Detailed Implementation

[0038] 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.

[0039] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Please see Figures 1-6 The image shows a multi-mode disc soot blower, with a disc body 1, which includes an upper cleaning part 101, a middle cleaning part 102, and a lower cleaning part 103.

[0041] The upper cleaning section 101 includes an upper cover 101a and a sweeping blade 101b. The upper cover 101a has a connection hole 101d for connecting to an external air supply line. The air source enters the spray plate body 1 from the air supply line through the connection hole 101d.

[0042] The cleaning center 102 includes a central cover 102a and a generator head 102b;

[0043] Clean the bottom end cap 103a, guide vane 103b and fixed base plate 103c of the lower part 103 package;

[0044] The upper end face of the sweeping blade 101b is fixedly connected to the lower end face of the upper end cover 101a, and the lower end face of the sweeping blade 101b is fixedly connected to the upper end face of the middle cover 102a.

[0045] The lower end face of the middle cover 102a is fixedly connected to the upper end face of the bottom cover 103a, and the generator head 102b is disposed on the side of the middle cover 102a.

[0046] Both the middle cover 102a and the bottom cover 103a are provided with a vent 2 of the same size.

[0047] The upper end face of the guide vane 103b is fixedly connected to the lower end face of the bottom cover 103a, and the lower end face of the guide vane 103b is fixedly connected to the lower end face of the fixed base plate 103c.

[0048] Multiple sweeping blades 101b are provided, and two adjacent sweeping blades 101b directly form a sweeping air duct 101c. The sweeping air duct 101c has a structure that gradually expands from one end near the center of the upper end cover 101a to the other end near the center of the upper end cover 101a.

[0049] Multiple guide vanes 103b are provided, and a Laval nozzle 103d is provided between two adjacent guide vanes 103b.

[0050] The air source enters the spray disc body 1. A portion enters the upper cleaning section 101 and is ejected from the sweeping air duct 101c, using high-speed air to blow away dust. Another portion enters the lower cleaning section 103, where it is accelerated and blown away through the Laval nozzle 103d. A third portion enters the middle cleaning section 102 and then flows into each generating head 102b, where the air is converted into sound waves to remove dust. This achieves dust removal through the combined use of sound waves and high-speed airflow.

[0051] Specifically, the generator head 102b includes an equalizing cylinder 102ba, a connecting rod 102bb, and a resonance cover 102bc. One end of the connecting rod 102bb is fixedly connected to the resonance cover 102bc, and a guide cone 102bd is provided at the end of the connecting rod 102bb near the equalizing cylinder 102ba. An air inlet plate 102be is provided on the guide cone 102bd, and multiple air inlet holes 102bf are provided on the air inlet plate 102be. The air inlet plate 102be and the guide cone 102bd are connected to each other. The wall and the interior of the equalization cylinder 102ba are fixedly connected. A guide block 102bg is also provided on the connecting rod 102bb. The cross-section of the guide block 102bg is trapezoidal. A ventilation annular gap 102bh is provided between the outer wall of the guide block 102bg and the inner wall of the equalization cylinder 102ba. A compression chamber 102bj is provided between the guide block 102bg and the guide cone 102bd. A resonance chamber 102bk is formed between the connecting rod 102bb and the resonance cover 102bc.

[0052] In this embodiment, the air source flows into the compression chamber 102bj from the air inlet hole 102bf on the air inlet plate 102be. The compressed gas in the compression chamber 102bj is ejected from the ventilation ring slit 102bh into the resonant chamber 102bc. The airflow reflected back from the resonant chamber 102bc and the airflow ejected from the ventilation ring slit 102bh generate friction and instantaneously produce high-intensity sound waves, which remove the accumulated dust.

[0053] Specifically, the outer wall of the central cover 102a has multiple through threaded holes 102d, and the outer wall of the air equalizer 102ba also has threads. The air equalizer 102ba is installed in the threaded holes 102d of the central cover 102a via a threaded connection. The fixed base plate 103c has multiple fixing slots 103e. Each threaded hole 102d contains a generator head 102b.

[0054] Working principle: The air source enters the spray plate body 1 through the air supply pipe and the connection hole 101d. Part of the air enters the upper cleaning section 101 and is ejected from the sweeping air duct 101c, using high-speed air to blow away dust. Another part enters the lower cleaning section 103, where it is accelerated and blown away through the Laval nozzle 103d. A remaining portion of the air enters the middle cleaning section 102 and then flows into each generating head 102b, where it is converted into sound waves to remove dust. This achieves dust removal through the combined use of sound waves and high-speed airflow. Both the cleaning air duct 101c and the pull-out nozzle 103d use high-speed airflow to remove accumulated dust. However, the effective range of the airflow is relatively small. Therefore, a generator head 102b is added to convert the air source into high-frequency sound waves to blow away the accumulated dust. This achieves the purpose of removing accumulated dust by combining high-speed airflow and high-intensity sound waves, ensuring the cleaning intensity while also increasing the cleaning range.

[0055] The embodiments are detailed, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-mode disc-jet soot blower, characterized in that: The cleaning disc body (1) includes an upper cleaning part (101), a middle cleaning part (102) and a lower cleaning part (103); The upper cleaning section (101) includes an upper end cover (101a) and a sweeping blade (101b); The cleaning center (102) includes a center cover (102a) and a generator head (102b); The cleaning lower part (103) includes a bottom end cap (103a), a guide vane (103b), and a fixed base plate (103c); The upper end face of the sweeping blade (101b) is fixedly connected to the lower end face of the upper end cover (101a), and the lower end face of the sweeping blade (101b) is fixedly connected to the upper end face of the middle cover (102a). The lower end face of the middle cover (102a) is fixedly connected to the upper end face of the bottom cover (103a), and the generator head (102b) is disposed on the side of the middle cover (102a). The upper end face of the guide plate (103b) is fixedly connected to the lower end face of the bottom cover (103a), and the lower end face of the guide plate (103b) is fixedly connected to the lower end face of the fixed base plate (103c). The sweeping blades (101b) are provided in multiple ways, and two adjacent sweeping blades (101b) directly form a sweeping air duct (101c). The sweeping air duct (101c) has a structure that gradually expands from one end near the center of the upper end cover (101a) to the other end away from the center of the upper end cover (101a). The guide vanes (103b) are provided in multiple forms, and a Laval nozzle (103d) is provided between two adjacent guide vanes (103b).

2. The multi-mode disc soot blower according to claim 1, characterized in that: The upper end cap (101a) is provided with a connection hole (101d).

3. The multi-mode disc soot blower according to claim 2, characterized in that: Both the middle cover (102a) and the bottom cover (103a) are provided with a vent (2) of the same size.

4. A multi-mode disc-jet soot blower according to claim 1, characterized in that: The generator head (102b) includes an equalization cylinder (102ba), a connecting rod (102bb), and a resonance cover (102bc); One end of the connecting rod (102bb) is fixedly connected to the resonant cover (102bc), and a guide cone (102bd) is provided at the end of the connecting rod (102bb) near the gas equalization cylinder (102ba). An air inlet plate (102be) is provided on the guide cone (102bd), and multiple air inlet holes (102bf) are provided on the air inlet plate (102be). The air inlet plate (102be) is fixedly connected to the outer wall of the guide cone (102bd) and the interior of the gas equalization cylinder (102ba). The connecting rod (102bb) is also provided with a flow guide block (102bg). The flow guide block (102bg) has a trapezoidal cross-section. A ventilation annular seam (102bh) is provided between the outer wall of the flow guide block (102bg) and the inner wall of the air equalization cylinder (102ba). A compression chamber (102bj) is provided between the flow guide block (102bg) and the flow guide cone (102bd). A resonance chamber (102bk) is formed between the connecting rod (102bb) and the resonance cover (102bc).

5. A multi-mode disc-jet soot blower according to claim 4, characterized in that: The outer wall of the central cover (102a) is provided with a plurality of through threaded holes (102d), and the outer wall of the air equalization cylinder (102ba) is also provided with threads. The air equalization cylinder (102ba) is provided in the threaded holes (102d) of the central cover (102a) by means of threaded connection.

6. A multi-mode disc-jet soot blower according to claim 1, characterized in that: The fixed base plate (103c) is provided with multiple fixed slots (103e).

7. A multi-mode disc-jet soot blower according to claim 5, characterized in that: Each of the threaded holes (102d) is provided with a generating head (102b).

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