An adjustable combustion nozzle assembly for the combustion chamber of a thermal power plant boiler

Abstract

This utility model relates to the field of combustion nozzle technology, and more particularly to an adjustable combustion nozzle assembly for the combustion chamber of a thermal power plant boiler. The technical solution includes a support frame, a rotating frame, a rotating shaft, a guide wheel, a nozzle, and a mounting frame. The support frame contains two hydraulic rods, and the rotating frame is located on one side of the support frame. The mounting frame is located above the rotating frame. A rotating shaft is rotatably mounted inside the rotating frame. A guide wheel is sleeved on the outer wall of the rotating shaft. A cable with one end connected to the outer wall of the guide wheel and the other end connected to the hydraulic rod is wound around the outer wall of the guide wheel. A support ring is sleeved on the outer wall of the rotating shaft, and a torsion spring is sleeved on the outer side of the rotating shaft. A nozzle is located on the outer wall of the rotating shaft. The mounting shaft is located on one side of the upper end of the rotating frame. This utility model, by incorporating a linear traction device inside the support frame, converts linear force into rotational force in different directions, enabling convenient adjustment of the nozzle and facilitating combustion inside the boiler.

Description

Technical Field

[0001] This utility model relates to the field of combustion nozzle technology, and in particular to an adjustable combustion nozzle assembly for the combustion chamber of a thermal power plant boiler. Background Technology

[0002] A thermal power plant is a factory that uses the combustion of fossil fuels to generate heat energy and then converts the heat energy into electrical energy. In a thermal power plant, the boiler converts the chemical energy of the fuel into the heat energy of water or steam through combustion. The fuel is burned in the combustion chamber of the boiler, also known as the furnace. The fuel output process is provided with combustion-supporting gas through tuyeres.

[0003] Because the nozzles are used in high-temperature environments, they cannot be easily adjusted, and it is difficult to optimize the combustion zone by fixing the airflow organization. Therefore, we propose an adjustable combustion nozzle assembly for the combustion chamber of a thermal power plant boiler to solve the existing problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an adjustable combustion nozzle assembly for the combustion chamber of a thermal power plant boiler.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant, comprising a support frame, a rotating frame, a rotating shaft, a guide wheel, a nozzle, and a mounting frame. The support frame contains a hydraulic rod one and a hydraulic rod two. A rotating frame is located on one side of the support frame, and a mounting frame is located above the rotating frame. A rotating shaft is rotatably mounted inside the rotating frame. A guide wheel is sleeved on the outer wall of the rotating shaft. A cable with one end connected to the outer wall of the guide wheel and the other end connected to the hydraulic rod one is wound around the outer wall of the guide wheel. A support ring is sleeved on the outer wall of the rotating shaft. A torsion spring with both ends connected to the guide wheel and the support ring is sleeved on the outer side of the rotating shaft. A nozzle is located on the outer wall of the rotating shaft. A mounting shaft rotatably mounted inside the mounting frame is located on one side of the upper end of the rotating frame.

[0006] Preferably, a torsion spring II is sleeved on the outer side of the mounting shaft, with its two ends connected to the mounting bracket and the rotating bracket respectively. The torsion spring II provides torsional elastic support to the mounting shaft.

[0007] Preferably, the mounting bracket has a guide rail at its upper end, a toothed plate is slidably mounted on the upper end of the guide rail, and a gear that meshes with the toothed plate is provided on the upper end of the mounting shaft. When the toothed plate moves linearly, it drives the gear to rotate, thereby causing the mounting shaft to rotate.

[0008] Preferably, one end of the toothed plate is provided with a cable second connected to the telescopic end of the hydraulic rod second. The movement of the telescopic end of the hydraulic rod second is achieved by the cable second pulling the toothed plate to move.

[0009] Preferably, the top of the rotating frame is open, and a motor is installed inside the support frame, with a screw at the motor's output end. The open top of the rotating frame allows the upward-facing nozzles to effectively output airflow.

[0010] Preferably, the lower end of the mounting bracket has a screw hole, and one end of the screw is threaded into the screw hole. A limit ring is provided at one end of the screw. The limit ring prevents the screw from dislodging from the screw hole, thereby providing stable support for the mounting bracket.

[0011] Preferably, the lower end of the mounting bracket has a through hole, and a guide rod, one end of which is connected to a support frame, is slidably inserted into the through hole. The guide rod slides within the through hole, providing sliding guidance for the mounting bracket.

[0012] Preferably, one end of the nozzle is provided with a universal tube sleeved on the outside of the rotating shaft, and the other end of the universal tube is provided with an air duct. The air duct delivers the combustion-supporting gas, and the effective bending of the universal tube when the nozzle rotates ensures the effective delivery of airflow.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention delivers fuel to the combustion chamber of a thermal power plant. During this process, a nozzle delivers combustion-supporting gas to aid fuel combustion. The nozzle is supported by a rotating shaft, which is in turn supported by a torsional spring. A cable wound around the outer wall of a guide wheel rotates the guide wheel, applying torsional pressure to the torsional spring and causing the rotating shaft to rotate. The rotation of the shaft adjusts the orientation of the nozzle opening. The rotating support of the shaft rotates horizontally, outputting combustion-supporting gas to different directions within the thermal power plant's combustion chamber. The nozzle linkage structure is achieved by applying tension through cables one and two. The system is traction-driven by electrical equipment located outside the combustion chamber, ensuring safety while allowing for the organization of combustion zones that are difficult to optimize through angle and orientation adjustments. Attached Figure Description

[0015] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a side-view three-dimensional structural diagram of the guide wheel of this utility model;

[0017] Figure 3 This is a front-view three-dimensional structural diagram of the motor of this utility model;

[0018] Figure 4 This is a top-view three-dimensional structural diagram of the gear of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the mounting shaft of this utility model, viewed from below.

[0020] Reference numerals in the attached diagram: 1. Support frame; 2. Hydraulic rod one; 3. Cable one; 4. Air duct; 5. Rotating frame; 6. Rotating shaft; 7. Guide wheel; 8. Air nozzle; 9. Hydraulic rod two; 10. Cable two; 11. Screw; 12. Guide rod; 13. Mounting bracket; 14. Universal tube; 15. Torsion spring one; 16. Gear plate; 17. Gear; 18. Motor; 19. Guide rail; 20. Support ring; 21. Mounting shaft; 22. Limiting ring; 23. Through hole; 24. Screw hole; 25. Torsion spring 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] like Figures 1-5 As shown, the present invention proposes an adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant, comprising a support frame 1, a rotating frame 5, a rotating shaft 6, a guide wheel 7, a nozzle 8, and a mounting frame 13. The support frame 1 is internally provided with a hydraulic rod 2 and a hydraulic rod 9. The rotating frame 5 is located on one side of the support frame 1, and the mounting frame 13 is located above the rotating frame 5. The rotating shaft 6 is rotatably mounted inside the rotating frame 5. A guide wheel 7 is sleeved on the outer wall of the rotating shaft 6. A cable 3, with one end connected to the outer wall of the guide wheel 7 and the other end connected to the hydraulic rod 2, is wound around the outer wall of the guide wheel 7. A support ring 20 is sleeved on the outer wall of the rotating shaft 6. A torsion spring 15, with both ends connected to the guide wheel 7 and the support ring 20 respectively, is sleeved on the outer side of the rotating shaft 6. The nozzle 8 is located on the outer wall of the rotating shaft 6. A mounting shaft 21, rotatably mounted inside the mounting frame 13, is located on one side of the upper end of the rotating frame 5.

[0023] A torsion spring 25 is sleeved on the outside of the mounting shaft 21, with its two ends connected to the mounting bracket 13 and the rotating bracket 5 respectively;

[0024] The upper end of the mounting bracket 13 is provided with a guide rail 19, the upper end of the guide rail 19 is slidably mounted with a toothed plate 16, and the upper end of the mounting shaft 21 is provided with a gear 17 that meshes with the toothed plate 16.

[0025] One end of the toothed plate 16 is provided with a cable 10 that is connected to the telescopic end of the hydraulic rod 9;

[0026] The top of the rotating frame 5 is open, and the support frame 1 is equipped with a motor 18. The output end of the motor 18 is equipped with a screw 11.

[0027] The mounting bracket 13 has a screw hole 24 inside the lower end. One end of the screw rod 11 is threaded into the screw hole 24. A limit ring 22 is provided at one end of the screw rod 11.

[0028] The lower end of the mounting bracket 13 has a through hole 23, and a guide rod 12 with one end connected to the support bracket 1 is slidably inserted into the through hole 23.

[0029] One end of the nozzle 8 is provided with a universal tube 14 that is sleeved on the outside of the rotating shaft 6, and the other end of the universal tube 14 is provided with a duct 4.

[0030] Based on the implementation steps of Embodiment 1: First, the support frame 1 is fixed to the outside of the boiler combustion chamber. The screw 11 is driven to rotate by the motor 18. The screw 11 is threadedly connected to the screw hole 24 at the lower end of the mounting frame 13. With the guide rod 12 sliding within the through hole 23 of the mounting frame 13, the position of the mounting frame 13 can be precisely adjusted to adapt to the structural requirements of different combustion chambers. The upper end of the mounting frame 13 is connected to the rotating frame 5 via a rotating mounting shaft 21. The upper part of the rotating frame 5 is open, allowing the air nozzle 8 to face the combustion chamber. When the combustion-supporting gas is delivered indoors, the telescopic end of the hydraulic rod 2 is connected to the outer wall of the guide wheel 7 via the cable 3. The guide wheel 7 is sleeved on the outer wall of the rotating shaft 6 and elastically connected to the support ring 20 via the torsion spring 15. When the hydraulic rod 2 pulls the cable 3, the guide wheel 7 rotates and drives the rotating shaft 6 to rotate. The air nozzle 8 on the rotating shaft 6 adjusts its up and down tilt angle accordingly. The torsion spring 15 is twisted when the guide wheel 7 rotates, providing a reverse elastic force to keep the angle of the air nozzle 8 stable and prevent angle deviation due to inertia or vibration.

[0031] One end of the nozzle 8 is connected to the air duct 4 through the universal tube 14. The universal tube 14 can rotate and bend with the nozzle 8 to ensure stable delivery of the combustion-supporting gas. When adjusting the position, the telescopic end of the hydraulic rod 2 9 is connected to the toothed plate 16 through the cable 2 10. The toothed plate 16 moves linearly along the guide rail 19 on the mounting frame 13 and meshes with the gear 17 at the upper end of the mounting shaft 21. When the hydraulic rod 2 9 pulls the cable 2 10, the toothed plate 16 moves and pushes the gear 17 to rotate, thereby driving the mounting shaft 21 and the rotating frame 5 to rotate in the horizontal plane to adjust the lateral position of the nozzle 8. The torsion spring 2 25 provides elastic support to the mounting shaft 21 to reduce shaking during the adjustment process.

[0032] Traditional air nozzles 8 are difficult to manually adjust in high-temperature environments, and their fixed airflow organization makes it difficult to optimize the combustion zone, resulting in incomplete fuel combustion, which reduces thermal energy conversion efficiency and may increase pollutant emissions. By using an external hydraulic device to remotely control the cable, the risk of operators entering the high-temperature combustion chamber is avoided, and safe and convenient adjustment is achieved. Through mechanical transmission such as guide wheel 7, cable, rotating shaft 6, gear 17, toothed plate 16, and mounting shaft 21, the angle and orientation of the air nozzle 8 can be precisely adjusted. Combined with the elastic reset function of the torsion spring, the stability and reliability of the adjustment are ensured. The dynamically optimized airflow organization can improve fuel combustion efficiency, reduce pollutants generated by incomplete combustion, and adapt to the combustion requirements under different load conditions.

[0033] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant, comprising a support frame (1), a rotating frame (5), a rotating shaft (6), a guide wheel (7), a nozzle (8), and a mounting frame (13), characterized in that: The support frame (1) is provided with a hydraulic rod 1 (2) and a hydraulic rod 2 (9) inside. A rotating frame (5) is provided on one side of the support frame (1). A mounting frame (13) is provided above the rotating frame (5). A rotating shaft (6) is rotatably installed inside the rotating frame (5). A guide wheel (7) is sleeved on the outer wall of the rotating shaft (6). A cable 1 (3) with one end connected to the outer wall of the guide wheel (7) and the other end connected to the hydraulic rod 1 (2) is wound on the outer wall of the guide wheel (7). A support ring (20) is sleeved on the outer wall of the rotating shaft (6). A torsion spring 1 (15) with both ends connected to the guide wheel (7) and the support ring (20) is sleeved on the outer side of the rotating shaft (6). A nozzle (8) is provided on the outer wall of the rotating shaft (6). A mounting shaft (21) rotatably installed inside the mounting frame (13) is provided on one side of the upper end of the rotating frame (5).

2. The adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant according to claim 1, characterized in that: The mounting shaft (21) is sleeved with a torsion spring (25) with both ends connected to the mounting frame (13) and the rotating frame (5) respectively.

3. The adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant according to claim 1, characterized in that: The mounting bracket (13) is provided with a guide rail (19) at its upper end, and a toothed plate (16) is slidably mounted on the upper end of the guide rail (19). The mounting shaft (21) is provided with a gear (17) that meshes with the toothed plate (16) at its upper end.

4. The adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant according to claim 3, characterized in that: One end of the toothed plate (16) is provided with a cable (10) that is connected to the telescopic end of the hydraulic rod (9).

5. The adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant according to claim 1, characterized in that: The rotating frame (5) is open at the top, and a motor (18) is installed inside the support frame (1). A screw (11) is installed at the output end of the motor (18).

6. The adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant according to claim 5, characterized in that: The mounting bracket (13) has a screw hole (24) inside its lower end. One end of the screw (11) is threaded into the screw hole (24) and a limit ring (22) is provided at one end of the screw (11).

7. The adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant according to claim 1, characterized in that: The mounting bracket (13) has a through hole (23) inside its lower end, and a guide rod (12) with one end connected to the support frame (1) is slidably inserted into the through hole (23).

8. The adjustable combustion nozzle assembly for a boiler combustion chamber in a thermal power plant according to claim 1, characterized in that: One end of the nozzle (8) is provided with a universal tube (14) sleeved on the outside of the rotating shaft (6), and the other end of the universal tube (14) is provided with a duct (4).

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