Airflow guide mechanism of multi-bluff-body staged burner

Abstract

The invention relates to an airflow guide mechanism of a multi-bluff-body staged burner, which comprises a rotating ring, a connecting straight plate is fixedly connected to the rotating ring, a gear ring is fixedly connected to the bottom end of the connecting straight plate, a circular ring sleeve is rotatably connected to the outside of the gear ring, a plurality of gears are rotatably connected to the inside of the circular ring sleeve, and the gears are in meshed connection with the gear ring. A baffle ring is arranged on the circular ring sleeve, partition blades are arranged on the gear, a mixing tank is rotationally connected to the interior of the rotating ring, a plurality of blunt blocks are arranged in the mixing tank, a material conveying structure is arranged at the left end of the mixing tank, a mounting ring is fixedly connected to the exterior of the mixing tank, and an ignition mechanism is arranged in the mixing tank. According to the invention, the rotating ring drives the connecting straight plate, the gear ring, the matching circular ring sleeve, the gear, the baffle ring and the partition blade, and the circular groove and the long contact plate of the mixing tank are synchronously utilized, so that the beneficial effects of accurately controlling the gas conveying aperture and promoting fuel to form rotational flow in the gap between the inner ring and the outer ring of the mixing tank so as to increase the gas-material contact area are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air flow guiding, in particular to an air flow guiding mechanism of a multi-blunt-body staged combustor. BACKGROUND

[0002] Specifically applied to industrial boilers, metallurgical furnaces, chemical reaction furnaces and other equipment that require efficient combustion. In the operation process of such equipment, the mixing effect of fuel and combustion gas directly determines the combustion efficiency, energy utilization rate and pollutant emission level, therefore the performance of the air flow guiding mechanism as the key component for regulating the mixing state of fuel and gas flow is crucial to the stable and efficient operation of the entire combustion system.

[0003] The air flow guiding mechanism of the existing combustor usually adopts a combination structure of fixed specification air flow channel and single guide vane, and its working process is as follows: the combustion gas flows into the combustion area through the channel with fixed hole diameter, and at the same time the fuel is delivered to the area, and the one-way guiding action of the guide vane tries to promote the mixing of fuel and gas flow. However, such structure has obvious deficiencies: firstly, the gas delivery hole diameter is fixedly set and cannot be accurately adjusted according to the actual combustion condition, making it difficult to adapt to the gas flow supply demand of different combustion stages; secondly, there is a lack of rotational flow guiding structure for fuel, and the contact area of fuel and gas flow is limited; thirdly, the mixing of gas flow and fuel only relies on the simple guiding of the guide vane, and the mixing process lacks effective disturbance, resulting in poor mixing uniformity, which together causes insufficient subsequent combustion and low combustion efficiency. SUMMARY

[0004] The purpose of the present application is to provide an air flow guiding mechanism of a multi-blunt-body staged combustor.

[0005] The purpose of the present application is achieved by the following technical solution: an air flow guiding mechanism of a multi-blunt-body staged combustor, comprising a rotating ring, a connecting straight plate fixedly connected to the rotating ring, a tooth ring fixedly connected to the bottom end of the connecting straight plate, a circular ring sleeve rotationally connected to the outside of the tooth ring, a plurality of gears rotationally connected to the inside of the circular ring sleeve, the plurality of gears being meshingly connected with the tooth ring, a blocking ring provided on the circular ring sleeve, a partition leaf provided on the gear, a mixing tank rotationally connected to the inside of the rotating ring, a plurality of blunt blocks provided in the inside of the mixing tank, a material conveying structure provided at the left end of the mixing tank, a mounting ring fixedly connected to the outside of the mixing tank, and an ignition mechanism provided in the inside of the mixing tank.

[0006] Further description of the above technical solution:

[0007] The mixing tank is divided into an outer ring and an inner ring, the left end of the inner ring is fixedly connected to the outside of the circular ring sleeve, a fixed frame is fixedly connected to the inner ring, a fan blade is provided on the fixed frame, and a fixed column is fixedly connected to the inner ring.

[0008] As a further description of the above technical solutions:

[0009] The connecting roller is fixedly connected to the fan blade, the threaded arc plate is slidably connected to the connecting roller, the external threads of the plurality of threaded arc plates are connected to the threaded sleeve, the external threaded sleeve is fixedly connected to the long touch plate, the external threaded sleeve is rotatably connected to the two rotating sleeves, the external rotating sleeves are slidably connected to the rotating sleeve two, the internal rotating sleeves and rotating sleeve two are provided with elastic mechanisms, and the external rotating sleeves are rotatably connected to the inner ring of the mixing tank.

[0010] As a further description of the above technical solutions:

[0011] The elastic mechanism comprises two telescopic rods, the external telescopic rods are sleeved with springs, one end of the telescopic rod is fixedly connected to the internal rotating sleeve, and the other end of the telescopic rod is fixedly connected to the internal rotating sleeve two.

[0012] As a further description of the above technical solutions:

[0013] One end of the spring is fixedly connected to the internal rotating sleeve, and the other end of the spring is fixedly connected to the internal rotating sleeve two.

[0014] As a further description of the above technical solutions:

[0015] The threaded arc plate is rotatably connected to a plurality of abutting plates, the plurality of abutting plates are rotatably connected to the connecting sleeve, the internal connecting sleeve is fixedly connected to the long rod, and the right end of the long rod is rotatably connected to the rotating rod.

[0016] As a further description of the above technical solutions:

[0017] The long rod and the rotating rod are provided with telescopic columns at the connection, and the external telescopic columns are sleeved with springs.

[0018] As a further description of the above technical solutions:

[0019] The internal ring of the mixing tank is provided with a plurality of circular grooves, and the external internal ring of the mixing tank is fixedly connected to the partition plate.

[0020] Compared with the prior art, the advantages of the present application are:

[0021] 1. By rotating the ring to drive the connecting straight plate, the gear ring, cooperating with the circular ring, the gear, the blocking ring, the partition leaf, synchronously with the circular groove of the mixing tank and the long touch plate, the beneficial effects of precise control of gas delivery aperture and promotion of rotational flow of fuel in the annular gap of the mixing tank to increase the gas-material contact area are realized; at the same time, the fan drives the connecting roller, the threaded arc plate, the threaded sleeve and the elastic mechanism, which further enhances the uniformity of fuel and gas flow mixing, and lays a good foundation for subsequent combustion.

[0022] 2. By driving the rotating rod and the long rod with the long touch plate, cooperating with the connecting sleeve, the touch plate and the threaded arc plate, combining the reset function of the elastic mechanism, the cyclic stable operation of the component action is realized, which ensures the precise reset and continuous cooperation of the structure action; at the same time, the disturbance of the blunt block to the mixed material enhances the mixing effect, cooperates with the precise start of the ignition mechanism, combines the circular operation of the fan driven by the combustion gas flow, adapts to the gas flow demand of different combustion stages, and ensures the stable and continuous combustion process. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the main body schematic diagram of a gas flow guide mechanism of a multi-blunt-body staged combustor according to the present application;

[0024] Figure 2 is a structural schematic diagram of a rotating ring of a gas flow guide mechanism of a multi-blunt-body staged combustor according to the present application;

[0025] Figure 3 is a structural schematic diagram of a connecting straight plate of a gas flow guide mechanism of a multi-blunt-body staged combustor according to the present application;

[0026] Figure 4 is a structural schematic diagram of a connecting roller of a gas flow guide mechanism of a multi-blunt-body staged combustor according to the present application;

[0027] Figure 5 is a structural schematic diagram of a rotating sleeve one of a gas flow guide mechanism of a multi-blunt-body staged combustor according to the present application;

[0028] Figure 6 is a structural schematic diagram of a threaded arc plate of a gas flow guide mechanism of a multi-blunt-body staged combustor according to the present application;

[0029] Figure 7 is Figure 6 is an enlarged view of A in FIG.

[0030] Explanation of signs: 1, rotating ring; 2, connecting straight plate; 3, gear ring; 4, circular ring cover; 5, gear; 6, blocking ring; 7, partition leaf; 8, circular groove; 9, mixing tank; 10, ignition mechanism; 11, blunt block; 12, mounting ring; 13, fixed frame; 14, fan leaf; 15, connecting roller; 16, threaded arc plate; 17, threaded sleeve; 18, rotating sleeve one; 19, rotating sleeve two; 20, telescopic rod; 21, spring one; 22, partition guard plate; 23, long touch plate; 24, connecting sleeve; 25, abutting plate; 26, long rod; 27, rotating rod; 28, telescopic column; 29, spring two; 30, fixed column; 31, material conveying structure. DETAILED DESCRIPTION

[0031] The content of the application will be described in detail below in combination with the drawings and examples of the specification:

[0032] As Figures 1-7 shown is an embodiment schematic diagram of a gas flow guiding mechanism of a multi-blunt-body staged combustor provided by the application, including a rotating ring 1, which completes initial control of a gas delivery aperture, and can subsequently continuously adjust the aperture according to changes in gas flow during the combustion process, adapt to the gas flow supply needs of different combustion stages, the rotating ring 1 is fixedly connected with a connecting straight plate 2, which maintains the corresponding position state of the rotating ring 1 and the gear ring 3, guarantees the stability of the initial state of the gas delivery aperture control related structure, the bottom end of the connecting straight plate 2 is fixedly connected with the gear ring 3, which maintains the initial meshing state with the circular ring cover 4 and the gear 5, provides a structure cooperation basis for the coordinated control of the gas delivery aperture, the gear ring 3 is rotatably connected with the circular ring cover 4 on the outside, maintains the initial meshing state with the gear ring 3 and the gear 5, participates in the initial control process of the gas delivery aperture, a plurality of gears 5 are rotatably connected inside the circular ring cover 4, which assist in completing the initial control operation of the gas delivery aperture through meshing with the gear ring 3, the plurality of gears 5 are meshingly connected with the gear ring 3, the circular ring cover 4 is provided with a blocking ring 6, which participates in the coordinated control of the gas delivery aperture and improves the precision of aperture control, the gear 5 is provided with a partition leaf 7, which maintains an initial distribution state and assists in completing the initial control of the gas delivery aperture, laying a foundation for the subsequent mixing of gas flow and fuel, the rotating ring 1 is rotatably connected with a mixing tank 9 inside, which provides a containing space for fuel and gas flow, and at the same time creates conditions for forming a rotational flow for fuel by means of the structural gap between the inner ring and the outer ring.

[0033] Multiple circular grooves 8 are formed on the inner ring of the mixing tank 9 to block the fuel in the gap between the inner and outer rings of the mixing tank 9, and to help the fuel form a swirling flow in the gap, thereby increasing the contact area between the fuel and the airflow. A partition plate 22 is fixedly connected to the outside of the inner ring of the mixing tank 9 to help guide the flow of materials inside the mixing tank 9, maintain the swirling state of the fuel, and ensure the continuous and stable mixing effect. Multiple blunt blocks 11 are set inside the mixing tank 9 to further disturb the fuel and airflow mixture after the initial mixing and swirling treatment, enhance the mixing effect, and provide conditions for complete combustion. A material conveying structure 31 is set at the left end of the mixing tank 9 to deliver fuel and airflow into the mixing tank 9, providing the basic material supply for the subsequent material mixing and combustion process. An installation ring 12 is fixedly connected to the outside of the mixing tank 9 to maintain a fixed position, ensure the overall installation stability of the device, and prevent displacement during operation. An ignition mechanism 10 is set inside the mixing tank 9 and is in a ready-to-start state. When the mixing degree of the fuel and airflow reaches the preset requirements, it is activated to ignite the mixture and trigger the combustion process.

[0034] The mixing tank 9 is divided into an outer ring and an inner ring. The left end of the inner ring is fixedly connected to the outside of the circular ring sleeve 4. A fixing frame 13 is fixedly connected to the inner ring to provide installation support for the fan blade 14 and ensure the structural stability of the fan blade 14 during operation. The fan blade 14 is installed on the fixing frame 13 to promote the flow of materials inside the mixing tank 9. It can also continue to operate with the help of the airflow generated by combustion, driving related components into a cyclic operation state. A fixing column 30 is fixedly connected to the inner ring. A connecting roller 15 is fixedly connected to the fan blade 14, which helps to cause the threaded arc plate 16 to generate a displacement tendency, providing a pre-drive condition for the movement of the threaded sleeve 17. The threaded arc plate 16 is slidably connected to the connecting roller 15, generating a displacement tendency to push the threaded sleeve 17 to move. It can also move in a specified direction under the action of force, participating in the reset process of the structure. Multiple abutment plates 25 are rotatably connected to the threaded arc plate 16, and the angle changes, applying force to the threaded arc plate 16 to push it to move in a specified direction. It can then return to the initial state. Connecting sleeves 24 are rotatably connected to the multiple abutment plates 25, and move synchronously with the long rod 26, driving the abutment plates 25 to change angle. They can then return to the initial state under the action of the related structure. The long rod 26 is fixedly connected inside the multiple connecting sleeves 24. After being pushed up, it drives the connecting sleeves 24 to move synchronously. They can then return to the initial state under the reset action of the spring 29.

[0035] A telescopic column 28 is provided at the connection between the long rod 26 and the rotating rod 27. This column extends and retracts with the upward movement of the long rod 26, buffering the force exerted during the upward movement and ensuring the stability of the structure. A spring 29 is sleeved on the outside of the telescopic column 28. As the telescopic column 28 deforms, its restoring force can drive the long rod 26 and related structures back to their initial state. The right end of the long rod 26 is rotatably connected to the rotating rod 27, which is activated by the long contact plate 23, causing the long rod 26 to be pushed upwards, providing the power basis for the movement of the connecting sleeve 24. Multiple threaded arc plates 16 are externally threaded with threaded sleeves 17, which are activated by the threaded arc plates 16. The external structure of these sleeves... The movement can trigger the operation of the elastic mechanism, which can then be reset with the help of the elastic force and drive the related structure back to its initial state. The threaded sleeve 17 is externally fixedly connected to a long contact plate 23, which blocks the fuel in the inner and outer ring gaps of the mixing tank 9 to assist in the formation of swirl. It can then push the rotating rod 27 to move, and participate in the reset process of the structure. The threaded sleeve 17 is externally rotatably connected to two rotating sleeves 18, which generate relative movement with rotating sleeve 19, providing structural matching conditions for the activation of the elastic mechanism. Rotating sleeve 18 is externally slidably connected to rotating sleeve 19, which generates relative movement with rotating sleeve 18, and works with the elastic mechanism to complete the extension and retraction action. It can then return to the initial relative position under the action of the elastic force.

[0036] The rotating sleeve 18 and rotating sleeve 29 are equipped with an elastic mechanism, which includes two telescopic rods 20. When they extend or retract, the deformation of the spring 21 causes the entire device to vibrate, improving the uniformity of fuel and airflow mixing. The spring 21 is sleeved on the outside of the telescopic rod 20. When the telescopic rod 20 deforms, its restoring force can drive the telescopic rod 20 to return to its initial length, thereby causing the relevant structure to return to its initial position. One end of the spring 21 is fixedly connected to the inside of the rotating sleeve 18, and the other end of the spring 21 is fixedly connected to the inside of the rotating sleeve 29. One end of the telescopic rod 20 is fixedly connected to the inside of the rotating sleeve 18, and the other end of the telescopic rod 20 is fixedly connected to the inside of the rotating sleeve 29. The outside of both rotating sleeves 29 are rotatably connected to the inner ring of the mixing tank 9.

[0037] Working principle: In the initial operation stage, the conveying structure 31 is activated, delivering fuel and airflow into the mixing tank 9. At this time, the rotating ring 1 maintains its initial position, the connecting straight plate 2 is fixed along with the rotating ring 1, the toothed ring 3 maintains its corresponding position synchronously, the circular sleeve 4 maintains its initial meshing with the toothed ring 3 and the gear 5, and the partition blade 7 is in its initial distribution state. Through the coordinated action of the rotating ring 1, the connecting straight plate 2, the toothed ring 3, the circular sleeve 4, the gear 5, the retaining ring 6, and the partition blade 7, the initial control of the gas conveying orifice is completed, laying the foundation for the subsequent mixing of airflow and fuel.

[0038] As the material conveying structure 31 continuously conveys materials, the inner and outer rings of the mixing tank 9 enter the working state. The fixed frame 13 on the inner ring of the mixing tank 9 drives the fan blade 14 to rotate. The rotation of the fan blade 14 drives the connecting roller 15 to move synchronously. The connecting roller 15 drives the threaded arc plate 16 on its outside to generate a displacement tendency. At the same time, the circular groove 8 and the long contact plate 23 on the inner ring of the mixing tank 9 begin to block the fuel in the gap between the inner and outer rings of the mixing tank 9, so that the fuel forms a swirling flow in the gap, increasing the contact area between the fuel and the airflow.

[0039] When the fan blade 14 drives the connecting roller 15 to move continuously, the displacement tendency of the threaded arc plate 16 causes the threaded sleeve 17 to start moving. The rotating sleeve 18 and rotating sleeve 19 outside the threaded sleeve 17 generate relative movement. At this time, the elastic mechanism inside the rotating sleeve 18 and rotating sleeve 19 is activated: the telescopic rod 20 extends and retracts, and the spring 21 outside it deforms accordingly. The coordinated action of the telescopic rod 20 and the spring 21 drives the whole device to vibrate, and the vibration further promotes the uniform distribution of fuel and airflow inside the mixing tank 9.

[0040] During the continuous operation of the threaded sleeve 17, its outer long contact plate 23 gradually approaches the rotating rod 27. When the long contact plate 23 contacts the rotating rod 27, it pushes the rotating rod 27 to move. The rotating rod 27 drives the long rod 26 connected to it to be pushed up. After the long rod 26 is pushed up, it drives the multiple connecting sleeves 24 on its outside to move synchronously. The movement of the connecting sleeve 24 drives the abutment plate 25 rotatably connected to it to change its angle. The angle change of the abutment plate 25 generates a force on the threaded arc plate 16, pushing the threaded arc plate 16 to move in the specified direction.

[0041] During the process of the long rod 26 being pushed up, the telescopic column 28 at the connection between the long rod 26 and the rotating rod 27 extends and retracts, and the external spring 29 deforms accordingly. This elastic action buffers the force when the long rod 26 is pushed up. At the same time, the movement of the threaded arc plate 16 will feed back to the threaded sleeve 17, causing the threaded sleeve 17 to have a tendency to reset.

[0042] After the threaded arc plate 16 completes its movement in the specified direction, the spring 21 inside the rotating sleeve 18 and rotating sleeve 29 begins to recover its deformation. The restoring force of the spring 21 drives the telescopic rod 20 to return to its initial length, thereby driving the rotating sleeve 18 and rotating sleeve 29 back to their initial relative positions. The threaded sleeve 17 begins to reset with the help of this force, driving the long contact plate 23 to reset synchronously. After the long contact plate 23 separates from the rotating rod 27, the telescopic column 28 and spring 29 also recover their deformation, driving the long rod 26, connecting sleeve 24, and contact plate 25 back to their initial state. The threaded arc plate 16 also returns to its initial position along with the reset of the contact plate 25.

[0043] After the above actions are completed, the multiple blunt blocks 11 inside the mixing tank 9 begin to work, further agitating the fuel and airflow mixture that has undergone preliminary mixing and swirling treatment, thereby enhancing the mixing effect. At the same time, the ignition mechanism 10 inside the mixing tank 9 is in a standby state. When the degree of mixing of fuel and airflow reaches the preset requirements, the ignition mechanism 10 is activated to ignite the mixture. Meanwhile, the mounting ring 12 outside the mixing tank 9 remains in position to ensure the stability of the device installation.

[0044] After the ignition mechanism 10 is activated, the airflow generated by combustion acts on the fan blade 14 again, causing the fan blade 14 to rotate continuously, which in turn drives the connecting roller 15, threaded arc plate 16, threaded sleeve 17 and other components into a cyclic operation state; at the same time, the partition plate 22 on the inner ring of the mixing tank 9 assists in guiding the flow of internal materials and maintaining the swirling state, while the rotating ring 1, connecting straight plate 2, toothed ring 3 and other components continuously adjust the gas delivery orifice according to the airflow changes during the combustion process, adapting to the airflow requirements of different combustion stages, and ensuring the stable operation of the combustion process.

Claims

1. An airflow guiding mechanism for a multi-blunt body staged burner, comprising a rotating ring (1), characterized in that: A connecting straight plate (2) is fixedly connected to the rotating ring (1). A toothed ring (3) is fixedly connected to the bottom end of the connecting straight plate (2). A circular ring sleeve (4) is rotatably connected to the outside of the toothed ring (3). Multiple gears (5) are rotatably connected inside the circular ring sleeve (4). The multiple gears (5) are meshed with the toothed ring (3). A retaining ring (6) is provided on the circular ring sleeve (4). A partition leaf (7) is provided on the gear (5). A mixing tank (9) is rotatably connected inside the rotating ring (1). Multiple blunt blocks (11) are provided inside the mixing tank (9). A material conveying structure (31) is provided at the left end of the mixing tank (9). An installation ring (12) is fixedly connected to the outside of the mixing tank (9). An ignition mechanism (10) is provided inside the mixing tank (9).

2. The airflow guiding mechanism of a multi-blunt body staged burner according to claim 1, characterized in that: The mixing tank (9) is divided into an outer ring and an inner ring. The left end of the inner ring is fixedly connected to the outside of the circular ring sleeve (4). A fixing frame (13) is fixedly connected to the inner ring. A fan blade (14) is provided on the fixing frame (13). A fixing column (30) is fixedly connected to the inner ring.

3. The airflow guiding mechanism of a multi-blunt body staged burner according to claim 2, characterized in that: A connecting roller (15) is fixedly connected to the fan blade (14). A threaded arc plate (16) is slidably connected to the connecting roller (15). A threaded sleeve (17) is threadedly connected to the outside of the multiple threaded arc plates (16). A long contact plate (23) is fixedly connected to the outside of the threaded sleeve (17). Two rotating sleeves (18) are rotatably connected to the outside of the threaded sleeve (17). A rotating sleeve (19) is slidably connected to the outside of the rotating sleeve (18). An elastic mechanism is provided inside the rotating sleeves (18) and the rotating sleeves (19). The two rotating sleeves (19) are rotatably connected to the inner ring of the mixing tank (9).

4. The airflow guiding mechanism of a multi-blunt body staged burner according to claim 3, characterized in that: The elastic mechanism includes two telescopic rods (20), with a spring (21) sleeved on the outside of each telescopic rod (20). One end of the telescopic rod (20) is fixedly connected to the inside of a rotating sleeve (18), and the other end of the telescopic rod (20) is fixedly connected to the inside of a rotating sleeve (19).

5. The airflow guiding mechanism for a multi-blunt body staged burner according to claim 4, characterized in that: One end of the first spring (21) is fixedly connected to the inside of the first rotating sleeve (18), and the other end of the first spring (21) is fixedly connected to the inside of the second rotating sleeve (19).

6. The airflow guiding mechanism of a multi-blunt body staged burner according to claim 3, characterized in that: Multiple abutment plates (25) are rotatably connected to the threaded arc plate (16), and connecting sleeves (24) are rotatably connected to the multiple abutment plates (25). Long rods (26) are fixedly connected inside the multiple connecting sleeves (24), and rotating rods (27) are rotatably connected to the right end of the long rods (26).

7. The airflow guiding mechanism for a multi-blunt body staged burner according to claim 6, characterized in that: A telescopic column (28) is provided at the connection between the long rod (26) and the rotating rod (27), and a spring (29) is sleeved on the outside of the telescopic column (28).

8. The airflow guiding mechanism for a multi-blunt body staged burner according to claim 1, characterized in that: The mixing tank (9) has multiple circular grooves (8) on its inner ring, and a partition plate (22) is fixedly connected to the outside of the inner ring of the mixing tank (9).

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