Fuel gas nozzle and integrated dual-fuel burner

Abstract

The utility model relates to the technical field of combustors, in particular to a fuel gas nozzle and an integrated dual-fuel combustor. A fuel gas nozzle and an integrated dual-fuel combustor comprise a fuel gas nozzle, a shell, a combustion-supporting air pipeline, a second fuel gas pipeline and a first fuel gas pipeline, the combustion-supporting air pipeline, the second fuel gas pipeline and the first fuel gas pipeline are sequentially fixed to the shell, and the combustion-supporting air pipeline, the second fuel gas pipeline and the first fuel gas pipeline are sequentially fixed to the shell. The right end of the shell, the right end of the first fuel gas pipeline and the right end of the second fuel gas pipeline are all fixed to the fuel gas spray head, the second fuel gas pipeline is communicated with the second fuel gas spray hole, and the first fuel gas pipeline is communicated with the first fuel gas outer side spray hole. Automatic ignition of the ignition rod is controlled through the fuel gas nozzle, and meanwhile, full contact and combustion of single fuel or mixed fuel and combustion-supporting air are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a fuel gas nozzle and an integrated dual-fuel burner. Background Art

[0002] With the development and changes of the global energy market, traditional single-fuel burners can no longer meet the requirements of different fuel supply and usage conditions. Therefore, it is particularly important to develop an integrated dual-fuel burner that can burn multiple fuels at the same time.

[0003] The dual fuel burners in the prior art also have some problems in terms of safety. For example, some burners still need to be manually ignited, which poses a great safety hazard.

[0004] In addition, there are dual-fuel burners in the prior art, such as single-fuel burners that achieve simultaneous combustion of two fuels by switching fuel supply channels. However, the burner has certain limitations in structure and control, such as a complex fuel switching process, a long switching time, and poor fuel compatibility.

[0005] In view of the above problems, the utility model aims to provide an integrated dual-fuel burner to solve the above problems. Utility Model Content

[0006] In response to the above problems, the present application provides a fuel gas nozzle and an integrated dual-fuel burner, which can achieve automatic ignition and full contact and combustion of a single fuel or a mixed fuel with combustion-supporting air.

[0007] To achieve the purpose of this application, this application provides the following technical solutions:

[0008] The present application provides a fuel gas nozzle, characterized in that the fuel gas nozzle is provided with an ignition rod channel, a plurality of fuel gas second spray holes and a plurality of fuel gas outer spray holes in sequence from the inside to the outside, and the ignition rod channel is connected to the fuel gas outer spray hole through an inclined fuel gas inner spray hole.

[0009] In a possible implementation, the second fuel gas spray hole and the first outer fuel gas spray hole are both obliquely opened in the fuel gas nozzle, and the second fuel gas spray hole and the first outer fuel gas spray hole have the same inclination direction.

[0010] In a possible implementation, the fuel gas nozzle has at least three fuel gas inner spray holes evenly distributed in the circumferential direction and opened at an angle of 120° to 140°.

[0011] In one possible implementation, an integrated dual-fuel burner also includes: a fuel gas nozzle, a shell, a combustion-supporting air pipe, a second fuel gas pipe and a first fuel gas pipe, wherein the combustion-supporting air pipe, the second fuel gas pipe and the first fuel gas pipe are fixed on the shell in sequence, and the right ends of the shell, the first fuel gas pipe and the second fuel gas pipe are all fixed to the fuel gas nozzle, the second fuel gas pipe is connected to the second fuel gas nozzle hole, and the first fuel gas pipe is connected to the outer fuel gas nozzle hole.

[0012] In a possible implementation, an ignition rod pipe is provided in the housing, and an ignition rod is slidably disposed inside the ignition rod pipe.

[0013] In a possible implementation, the right end of the combustion-supporting air pipe is fixedly connected to a combustion-supporting air nozzle, the combustion-supporting air nozzle is configured as a constricted structure, and the right end of the fuel gas nozzle is located inside the combustion-supporting air nozzle.

[0014] In a possible implementation, a combustion-supporting air swirl blade is rotatably installed inside the combustion-supporting air nozzle, the combustion-supporting air swirl blade is sleeved on the outside of the second fuel gas pipeline, and a center hole is opened on the combustion-supporting air swirl blade.

[0015] In a possible implementation, at least six of the second fuel gas injection holes are evenly distributed and opened in the fuel gas injection head.

[0016] In a possible implementation, at least six outer fuel gas injection holes are evenly distributed and opened in the fuel gas nozzle.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model sets a dual-fuel system burner, which can achieve the effects of automatic ignition and simultaneous combustion of single or multiple fuels on the one hand, and on the other hand greatly saves the fuel switching process, effectively ensures the compatibility of fuels, improves the efficiency and intelligence of fuel combustion, reduces energy loss, and also reduces the operating costs of enterprises.

[0019] 2. The utility model can monitor the flame in the furnace in real time by means of the UV fire detector, fire viewing mirror and ion fire detector, thus ensuring the reliability of the dual-fuel burner system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application.

[0021] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the installation flange in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the fuel gas nozzle in the utility model;

[0024] Figure 4 A schematic diagram of the structure of the fuel gas nozzle in the utility model;

[0025] Figure markings: 1. Ignition rod; 2. Fuel gas inlet one; 3. Fuel gas inlet two; 4. Combustion-supporting air inlet; 5. UV fire detection; 6. Fire viewing mirror; 7. Mounting flange; 8. Combustion-supporting air duct; 9. Fuel gas duct two; 10. Fuel gas duct one; 11. Ignition rod duct; 12. Combustion-supporting air swirl sheet; 13. Fuel gas duct two; 14. Fuel gas duct one outer spray hole; 15. Fuel gas duct one inner spray hole; 16. Fuel gas nozzle; 17. Combustion-supporting air nozzle; 18. Ion fire detection; 19. Casing. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, unless otherwise specified, "plurality" means two or more.

[0028] Example 1

[0029] Figure 1-4 A fuel gas nozzle 16 provided in an embodiment of the present application is characterized in that the fuel gas nozzle 16 is provided with an ignition rod channel, a plurality of fuel gas second nozzle holes 13 and a plurality of fuel gas outer nozzle holes 14 in sequence from the inside to the outside, and the ignition rod channel is connected to the fuel gas outer nozzle hole 14 through an inclined fuel gas inner nozzle hole 15.

[0030] In a possible implementation, the second fuel gas spray hole 13 and the first outer fuel gas spray hole 14 are both obliquely opened in the fuel gas nozzle 16, and the second fuel gas spray hole 13 and the first outer fuel gas spray hole 14 have the same inclination direction.

[0031] In a possible implementation, the fuel gas nozzle 16 has at least three fuel gas inner spray holes 15 evenly distributed in the circumferential direction and opened at an angle of 120° to 140°.

[0032] For example, preferably, the fuel gas inner spray hole 15 is opened at 135° in the fuel gas nozzle 16, which is conducive to the fuel gas entering the ignition rod channel, thereby facilitating automatic ignition of the burner and protecting the head of the ignition rod 1 from being burned by flames.

[0033] In one possible implementation, an integrated dual-fuel burner also includes: a fuel gas nozzle 16, a shell 19, a combustion-supporting air pipe 8, a second fuel gas pipe 9 and a first fuel gas pipe 10, wherein the combustion-supporting air pipe 8, the second fuel gas pipe 9 and the first fuel gas pipe 10 are fixed on the shell 19 in sequence, and the right ends of the shell 19, the first fuel gas pipe 10 and the second fuel gas pipe 9 are all fixed to the fuel gas nozzle 16, the second fuel gas pipe 9 is connected to the second fuel gas nozzle hole 13, and the first fuel gas pipe 10 is connected to the first fuel gas outer nozzle hole 14.

[0034] By adopting the above technical solution, fuel gas one can be introduced into fuel gas one through fuel gas one pipeline 10, and fuel gas two can be introduced into fuel gas two through fuel gas two pipeline 9, which can supply fuel gas to fuel gas nozzle 16 respectively, so that fuel gas nozzle 16 can be supplied with a single fuel gas one or a single fuel gas two or a mixture of fuel gas one and fuel gas two, and then the combustion air is introduced through combustion air pipeline 8, so that the fuel gas and air are mixed.

[0035] Optionally, a mounting flange 7 is fixedly provided on the outer side of the combustion-supporting air duct 8, and a fire viewing mirror 6, a UV fire detector 5 and an ion fire detector 18 are respectively installed on the circumference of the mounting flange 7.

[0036] By adopting the above technical solution, the flame viewing mirror 6 can observe the burning condition of the flame in the furnace, and the UV flame detector 5 and the ion flame detector 18 can monitor the burning state of the flame in the furnace, so as to determine the sufficiency of the mixture or single combustion of fuel gas one and fuel gas two.

[0037] In a possible implementation, an ignition rod pipe 11 is provided in the housing 19 , and an ignition rod 1 is slidably disposed inside the ignition rod pipe 11 .

[0038] Optionally, a frustum is further provided on the left inner wall of the ignition rod channel to facilitate fixing the ignition rod 1 in the center position.

[0039] Optionally, the left end of the fuel gas pipeline 10 is connected to the fuel gas inlet 1 2 , and the left end of the fuel gas pipeline 2 9 is connected to the fuel gas inlet 2 3 .

[0040] In one possible implementation, the right end of the combustion-supporting air pipe 8 is fixedly connected to a combustion-supporting air nozzle 17, and the combustion-supporting air nozzle 17 is configured as a tapered structure to enhance the full contact between fuel gas 1 or fuel gas 2 and air, and the right end of the fuel gas nozzle 16 is located inside the combustion-supporting air nozzle 17.

[0041] In one possible implementation, a combustion air swirl sheet 12 is installed inside the combustion air nozzle 17. The combustion air swirl sheet 12 is sleeved on the outside of the second fuel gas pipeline 9, and a center hole is opened on the combustion air swirl sheet 12 so that air can impact the combustion air swirl sheet 12 to rotate.

[0042] In a possible implementation, at least six of the second fuel gas injection holes 13 are evenly distributed in the fuel gas nozzle 16, which is conducive to the full mixing of air and the first fuel gas.

[0043] In a possible implementation, at least six of the fuel gas one outer spray holes 14 are evenly distributed in the fuel gas nozzle 16, which is conducive to the full mixing of air and fuel gas two.

[0044] Optionally, the fuel gas nozzle 16 is made by forging, so that the overall structural stability of the fuel gas nozzle 16 is better.

[0045] Working principle:

[0046] When using an integrated dual-fuel burner and only needing to burn a single fuel gas, first introduce fuel gas one only through fuel gas one inlet 2 or introduce fuel gas two only through fuel gas two inlet 3, and introduce air through the combustion-supporting air inlet 4, so that during the rotation of the combustion-supporting air swirl blade 12, fuel gas one and air or fuel gas two and air are in full contact, and automatically ignite through the movement of the ignition rod 1, and then observe the combustion of fuel gas one or fuel gas two in the furnace through the fire viewing mirror 6, and the combustion state of the flame in the furnace can also be monitored through the UV fire detector 5 and the ion fire detector 18.

[0047] When using an integrated dual-fuel burner and only multiple fuel gases are needed for combustion, fuel gas one is introduced through fuel gas one inlet 2, fuel gas two is introduced through fuel gas two inlet 3, and air is introduced through the combustion-supporting air inlet 4, so that the combustion-supporting air swirl blades 12 are in full contact with the air and fuel gas two is in full contact with the air during rotation, and automatically ignite through the movement of the ignition rod 1, and then the mixed combustion of fuel gas one and fuel gas two in the furnace is observed through the fire viewing mirror 6. At the same time, the mixed combustion state of fuel gas one and fuel gas two in the furnace can also be monitored through the UV fire detector 5 and the ion fire detector 18.

[0048] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.

Claims

1. A fuel gas nozzle (16), characterized in that: The fuel gas nozzle (16) is provided with an ignition rod channel, a plurality of fuel gas second spray holes (13) and a plurality of fuel gas first outer spray holes (14) in sequence from the inside to the outside, and the ignition rod channel is connected to the fuel gas first outer spray hole (14) via an inclined fuel gas first inner spray hole (15).

2. A fuel gas nozzle (16) according to claim 1, characterized in that: The second fuel gas spray hole (13) and the first outer fuel gas spray hole (14) are both obliquely arranged in the fuel gas spray head (16), and the second fuel gas spray hole (13) and the first outer fuel gas spray hole (14) have the same inclination direction.

3. A fuel gas nozzle (16) according to claim 1, characterized in that: The fuel gas nozzle (16) is provided with at least three fuel gas inner spray holes (15) uniformly distributed in the circumferential direction and opened at an angle of 120° to 140°.

4. A fuel gas nozzle (16) according to any one of claims 1 to 3, characterized in that: At least six of the second fuel gas injection holes (13) are evenly distributed and opened in the fuel gas injection head (16).

5. A fuel gas nozzle (16) according to any one of claims 1 to 3, characterized in that: At least six of the fuel gas outer spray holes (14) are evenly distributed and opened in the fuel gas spray head (16).

6. An integrated dual-fuel burner, characterized in that: include: A fuel gas nozzle (16), a shell (19), a combustion-supporting air pipeline (8), a second fuel gas pipeline (9) and a first fuel gas pipeline (10) as described in any one of claims 1 to 5, wherein the combustion-supporting air pipeline (8), the second fuel gas pipeline (9) and the first fuel gas pipeline (10) are fixed to the shell (19) in sequence, and the right ends of the shell (19), the first fuel gas pipeline (10) and the second fuel gas pipeline (9) are all fixed to the fuel gas nozzle (16), the second fuel gas pipeline (9) is connected to the second fuel gas nozzle hole (13), and the first fuel gas pipeline (10) is connected to the first outer fuel gas nozzle hole (14).

7. The integrated dual-fuel burner according to claim 6, characterized in that: An ignition rod pipe (11) is provided in the housing (19), and an ignition rod (1) is slidably arranged inside the ignition rod pipe (11).

8. The integrated dual fuel burner according to claim 6, characterized in that: The right end of the combustion-supporting air pipe (8) is fixedly connected to a combustion-supporting air nozzle (17), the combustion-supporting air nozzle (17) is configured as a constricted structure, and the right end of the fuel gas nozzle (16) is located inside the combustion-supporting air nozzle (17).

9. The integrated dual fuel burner according to claim 8, characterized in that: A combustion-supporting air swirl sheet (12) is rotatably mounted inside the combustion-supporting air nozzle (17). The combustion-supporting air swirl sheet (12) is sleeved on the outside of the second fuel gas pipeline (9), and a center hole is opened on the combustion-supporting air swirl sheet (12).

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