Burner nozzle of combustor

Abstract

The utility model discloses a burner nozzle which comprises a nozzle body, the nozzle body is provided with a containing cavity, and a mixing device used for mixing fuel gas and air is arranged in the containing cavity. The burner body is provided with a fuel gas inlet module, an air inlet module and a fire tube, and the fuel gas inlet module comprises a fuel gas seat fixedly connected with the burner body, a fuel gas connector detachably and fixedly connected with the fuel gas seat and a fuel gas pore plate clamped between the fuel gas seat and the fuel gas connector; the air inlet module comprises an air seat fixedly connected with the burner body, an air interface detachably and fixedly connected with the air seat, and an air pore plate clamped between the air seat and the air interface; the gas inlet module and the air inlet module are arranged at the gas inlet end of the burner body, the fire tube is arranged at the gas outlet end of the burner body, and the fire tube is detachably and fixedly connected with the burner body. The burner nozzle is reasonable in structure, the gas pore plate, the air pore plate and the fire tube can be replaced, the application range is wide, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, and in particular to a burner nozzle. Background Art

[0002] The burner nozzle in the prior art, as described in CN203940427U, includes a nozzle body. A flame detector and an ignition electrode are arranged on the left end face of the nozzle body. Its characteristics are: a gas pipeline is arranged at the left part of the nozzle body, the gas pipeline is arranged axially in the nozzle body, an air pipeline is arranged at the top of the nozzle body, the air pipeline is arranged radially along the nozzle body, a mixing device is arranged at the front end of the gas pipeline, the mixing device is in the shape of a hollow cylinder, and inclined holes are formed on the cylindrical surface of the mixing device; a gas orifice plate is arranged on the gas pipeline, and an air orifice plate is arranged on the air pipeline.

[0003] Due to the non-replaceable nature of the gas orifice plate in the above burner nozzle, the adaptability to working conditions is poor, and only single fuel can be used.

[0004] Therefore, it is necessary to improve the burner nozzle in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the defects existing in the prior art, and provide a burner nozzle, in which the gas orifice plate, the air orifice plate and the fire tube are all replaceable, the application range is wide, and the cost is reduced.

[0006] To achieve the above technical effects, the technical solution of the utility model is: a burner nozzle, including a nozzle body, the nozzle body is provided with a receiving cavity, and a mixing device for mixing gas and air is arranged in the receiving cavity; the nozzle body is provided with a gas inlet module, an air inlet module and a fire tube, the gas inlet module includes a gas seat fixedly connected with the nozzle body, a gas interface detachably and fixedly connected with the gas seat, and a gas orifice plate clamped between the gas seat and the gas interface; the air inlet module includes an air seat fixedly connected with the nozzle body, an air interface detachably and fixedly connected with the air seat, and an air orifice plate clamped between the air seat and the air interface; the gas inlet module and the air inlet module are arranged at the air inlet end of the nozzle body, the fire tube is arranged at the air outlet end of the nozzle body, and the fire tube is detachably and fixedly connected with the nozzle body.

[0007] The preferred technical solution is that the mixing device is provided with a mixing channel and a ventilation hole communicated with the mixing channel, and the ventilation hole extends to the receiving cavity; the gas seat is provided with a gas channel communicated with the mixing channel; the air seat is provided with an air outlet communicated with the receiving cavity.

[0008] Preferably, the gas seat is provided with mounting holes for mounting a flame detector and an ignition electrode.

[0009] Preferably, the fire tube is a silicon carbide fire tube, an alloy fire tube or a castable fire tube.

[0010] Preferably, the tail section of the fire tube is arranged in a constricted shape.

[0011] Preferably, several groups of annular ridges are arranged along the circumferential direction of the mixing device, the ventilation holes are arranged on the annular ridges, and the ventilation holes are arranged on the air inlet side of the annular ridges.

[0012] Preferably, a circular plate is arranged at the air outlet end of the mixing device, the circular plate is provided with radial grooves, and several radial grooves are arranged along the circumferential direction of the circular plate.

[0013] Preferably, the circular plate is arranged in the fire tube.

[0014] The advantages and beneficial effects of the present utility model are as follows: The burner nozzle structure of the present utility model is reasonable. By detachably arranging the gas orifice plate, the air orifice plate and the fire tube, corresponding components can be replaced according to different power requirements, gas types and flame length requirements, and the working condition adaptability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of an embodiment of the burner nozzle of the present utility model;

[0016] Figure 2 is Figure 1 an exploded view of

[0017] Figure 3 is Figure 1 a sectional view of

[0018] Figure 4 is Figure 2 a sectional view of

[0019] Figure 5 is a schematic structural view of the mixing device;

[0020] In the figure: 1. Burner nozzle body; 11. Accommodating cavity; 2. Mixing device; 21. Mixing channel; 22. Ventilation hole; 23. Annular ridge; 24. Circular plate; 25. Radial groove; 3. Gas inlet module; 31. Gas seat; 32. Gas interface; 33. Gas orifice plate; 34. Gas channel; 35. Mounting hole; 4. Air inlet module; 41. Air seat; 42. Air interface; 43. Air orifice plate; 44. Air outlet; 5. Fire tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will further describe the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, and cannot be used to limit the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Embodiment

[0023] As Figures 1-5 shown, the burner nozzle of the embodiment includes a nozzle body 1. The nozzle body 1 is provided with a receiving cavity 11, and a mixing device 2 for mixing gas and air is arranged in the receiving cavity 11; the nozzle body 1 is provided with a gas inlet module 3, an air inlet module 4 and a fire tube 5. The gas inlet module 3 includes a gas seat 31 fixedly connected to the nozzle body 1, a gas interface 32 detachably and fixedly connected to the gas seat 31, and a gas orifice plate 33 clamped between the gas seat 31 and the gas interface 32; the air inlet module 4 includes an air seat 41 fixedly connected to the nozzle body 1, an air interface 42 detachably and fixedly connected to the air seat 41, and an air orifice plate 43 clamped between the air seat 41 and the air interface 42; the gas inlet module 3 and the air inlet module 4 are arranged at the air inlet end of the nozzle body 1, the fire tube 5 is arranged at the air outlet end of the nozzle body 1, and the fire tube 5 is detachably and fixedly connected to the nozzle body 1.

[0024] Through such a design, the gas orifice plate 33, the air orifice plate 43 and the fire tube 5 are detachably arranged, and corresponding components can be replaced according to different power requirements, gas types and flame length requirements, with strong working condition adaptability.

[0025] Specifically, the mixing device 2 is provided with a mixing channel 21 and ventilation holes 22 communicated therewith, and the ventilation holes 22 extend to the receiving cavity 11; the gas seat 31 is provided with a gas channel 34 communicated with the mixing channel 21; the air seat 41 is provided with an air outlet 44 communicated with the receiving cavity 11.

[0026] Through such a design, the purpose of fully mixing air and gas in the mixing device 2 is achieved.

[0027] Specifically, the gas seat 31 is provided with mounting holes 35 for mounting a flame detector and an ignition electrode.

[0028] Further, the fire tube 5 is a silicon carbide fire tube, an alloy fire tube or a castable fire tube.

[0029] Through such a design, the corresponding fire tube can be selected according to the temperature, improving the service life.

[0030] Specifically, the tail section of the fire tube 5 is arranged in a closed-mouth shape.

[0031] Through such a design, the flame speed is increased and the temperature uniformity is ensured.

[0032] Further, a plurality of groups of annular ridges 23 are arranged on the mixing device 2 along its circumferential direction. The ventilation holes 22 are arranged on the annular ridges 23, and the ventilation holes 22 are arranged on the air inlet side of the annular ridges 23.

[0033] Through such a design, the effect of air being graded into the mixing device 2 is ensured, improving the air-gas mixing effect.

[0034] Specifically, a circular plate 24 is arranged at the air outlet end of the mixing device 2. The circular plate 24 is provided with radial grooves 25, and a plurality of the radial grooves 25 are arranged along the circumferential direction of the circular plate 24.

[0035] Specifically, the circular plate 24 is arranged in the fire tube 5.

[0036] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A burner nozzle, characterized in that, It includes a burner body (1), the burner body (1) is provided with a receiving cavity (11), and a mixing device (2) for mixing gas and air is arranged in the receiving cavity (11); the burner body (1) is provided with a gas inlet module (3), an air inlet module (4) and a fire tube (5), the gas inlet module (3) includes a gas seat (31) fixedly connected to the burner body (1), a gas interface (32) detachably and fixedly connected to the gas seat (31), and a gas orifice plate (33) clamped between the gas seat (31) and the gas interface (32); the air inlet module (4) includes an air seat (41) fixedly connected to the burner body (1), an air interface (42) detachably and fixedly connected to the air seat (41), and an air orifice plate (43) clamped between the air seat (41) and the air interface (42); the gas inlet module (3) and the air inlet module (4) are arranged at the air inlet end of the burner body (1), the fire tube (5) is arranged at the air outlet end of the burner body (1), and the fire tube (5) is detachably and fixedly connected to the burner body (1); The mixing device (2) is provided with a mixing channel (21) and ventilation holes (22) communicating therewith, and the ventilation holes (22) extend to the receiving cavity (11); the gas seat (31) is provided with a gas channel (34) communicating with the mixing channel (21); the air seat (41) is provided with an air outlet (44) communicating with the receiving cavity (11); The mixing device (2) is provided with several groups of annular convex rings (23) along its circumferential direction, the ventilation holes (22) are arranged on the annular convex rings (23), and the ventilation holes (22) are arranged on the air inlet side of the annular convex rings (23).

2. The burner nozzle according to claim 1, characterized in that, The gas seat (31) is provided with mounting holes (35) for installing a flame detector and an ignition electrode.

3. The burner nozzle according to claim 1, characterized in that, The fire tube (5) is a silicon carbide fire tube or an alloy fire tube or a castable fire tube.

4. The burner nozzle according to claim 1, characterized in that, The tail section of the fire tube (5) is arranged in a converging shape.

5. The burner nozzle according to claim 1, characterized in that, A circular plate (24) is arranged at the air outlet end of the mixing device (2), and the circular plate (24) is provided with radial grooves (25), and several radial grooves (25) are arranged along the circumferential direction of the circular plate (24).

6. The burner nozzle according to claim 5, characterized in that, The circular plate (24) is arranged in the fire tube (5).

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