Dual-fuel linear burner
By designing a dual-fuel linear burner, utilizing first and second feed pipes and nozzle assemblies, the problem of needing to replace nozzles in traditional burners is solved, enabling flexible fuel switching and efficient combustion, thus improving the burner's adaptability and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-13
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional burners mostly use a single fuel combustion method, requiring nozzle and fuel replacement, which limits the burner's performance and flexibility.
A dual-fuel linear burner was designed, comprising a housing, a feed assembly, and a nozzle assembly. By combining the first and second feed pipes and the nozzle, the switching between two fuels can be achieved without replacing the nozzle, thus flexibly adapting to different fuel requirements.
It enables flexible fuel switching, improves the adaptability and efficiency of the burner, reduces downtime and maintenance costs, and enhances combustion stability and energy utilization efficiency.
Smart Images
Figure CN224050376U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of dual-fuel linear combustor. BACKGROUND
[0002] Combustor is the key equipment widely used in heating, drying and other process links in industrial production, and its performance directly affects important indicators such as energy utilization efficiency, production cost and waste gas emission. With the development of industry, the role of energy in industry is becoming more and more important, and the importance of comprehensive utilization of low-calorific-value fuel combustion in industrial production is increasingly prominent.
[0003] Currently, traditional combustor mostly adopts single fuel combustion mode, and if fuel needs to be replaced, nozzle also needs to be replaced, which limits the performance of combustor.
[0004] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. INVENTION CONTENTS
[0005] Therefore, the embodiment of the present application provides a kind of dual-fuel linear combustor to solve at least one problem existing in the background art, comprising:
[0006] Shell, with combustion air duct communicated with fan and combustion air chamber communicated with the combustion air duct and combustion chamber;
[0007] Feeding assembly, comprising support installed inside the shell, first feeding pipe installed on the support and second feeding pipe sleeved outside the first feeding pipe;
[0008] Nozzle assembly, comprising several nozzles arranged along the feeding assembly, several nozzles are located in the combustion chamber, each nozzle comprises first communication pipe communicated with the first feeding pipe and second communication pipe sleeved outside the first communication pipe and communicated with the second feeding pipe, the first communication pipe has first discharge port communicated with the combustion chamber, the second communication pipe has second discharge port communicated with the combustion chamber, and the first discharge port and the second discharge port do not overlap in horizontal direction.
[0009] Optionally, the above-mentioned dual-fuel linear combustor, several flame stabilizing plates are further arranged in the shell, several flame stabilizing plates jointly separate the combustion air chamber and the combustion chamber, and several air holes and mounting holes are arranged on the flame stabilizing plates, and the nozzle is arranged on the mounting hole.
[0010] Optionally, the above-mentioned dual-fuel linear combustor, the first end of the first communication pipe is provided with threads to be threadedly connected with the first feeding pipe, and the first discharge port is located at the second end of the first communication pipe.
[0011] The nozzle further comprises a transition piece, the transition piece comprises a connecting part and a butt joint part connected with the connecting part, the connecting part is screwed with the second feeding pipe, the butt joint part is arranged outside the second communication pipe, and the transition piece is arranged in the same plane with the inner wall of the second communication pipe.
[0012] Optionally, the dual-fuel linear burner, the mounting hole has a diameter larger than a diameter of the second communication pipe, and the second communication pipe further has a lap joint part arranged in a circumferential direction, and the lap joint part is lapped with the flame stabilizing plate.
[0013] Optionally, the dual-fuel linear burner, the upper end of the combustion cavity is arranged with a plurality of inwardly bent claws in a circumferential direction.
[0014] Optionally, the dual-fuel linear burner, the combustion cavity and the combustion cavity are composed of a plurality of sheet metal parts, and at least partially overlapped.
[0015] Optionally, the dual-fuel linear burner, the plurality of sheet metal parts of the combustion cavity are further provided with reinforcing ribs.
[0016] Optionally, the dual-fuel linear burner, the first feeding pipe and the second feeding pipe are integrally formed.
[0017] Compared with the prior art, the present application has the following beneficial effects: by arranging the first feeding pipe, the second feeding pipe sleeved outside the first feeding pipe, and the nozzle arranged in the combustion cavity, each nozzle comprises a first communication pipe communicated with the first feeding pipe and a second communication pipe communicated with the second feeding pipe, so that one burner can use two different fuels or only one fuel, such as high calorific value fuel and low calorific value fuel, and can be seamlessly switched, without the need to replace the nozzle, high flexibility, and meets the diversified fuel demand in industrial production. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a structural schematic view of the dual-fuel linear burner shown in the embodiment;
[0019] Figure 2 is a sectional view of Figure 1
[0020] Figure 3 is a partial enlarged view of Figure 2
[0021] BRIEF DESCRIPTION OF DRAWINGS: 1 - housing, 11 - combustion air channel, 12 - combustion air cavity, 13 - combustion cavity, 14 - curved claw; 2 - feeding assembly, 21 - bracket, 22 - first feeding pipe, 23 - second feeding pipe; 3 - nozzle assembly, 31 - nozzle, 311 - first communication pipe, 312 - second communication pipe, 313 - first discharge port, 314 - second discharge port, 315 - thread; 32 - transition piece, 321 - connecting part, 322 - butting part; 4 - flame holder plate, 41 - air hole, 42 - mounting hole; 5 - sheet metal part, 51 - reinforcing rib. DETAILED DESCRIPTION
[0022] The exemplary embodiments of the present application will be described more fully hereinafter with reference to the accompanying drawings. In the following description, numerous specific details are given to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known structures and functions have not been described in detail in order to avoid obscuring the application. In this description, the terms "couple" or "coupled" mean an indirect or direct electrical or mechanical connection. Thus, if a first device couples to a second device, that connection can be through a direct electrical or mechanical connection, or through an indirect electrical or mechanical connection via other devices and connections.
[0023] It should be understood that when an element or layer is referred to as being "on", "adjacent", "connected to" or "coupled to" another element or layer, it can be directly on, adjacent, connected or coupled to the other element or layer, or one or more intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly adjacent", "directly connected to", or "directly coupled to" another element or layer, then there are no intervening elements or layers present. It will be appreciated that, although terms such as first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application and, similarly, a second element, component, region, layer or section discussed below could be termed a first element, component, region, layer or section without departing from the teachings of the present application. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.
[0024] Spatially relative terms, such as "beneath", "below", "lower", "under", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device described herein is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features.
[0025] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0026] For a thorough understanding of the application, detailed descriptions will be made in the following description with specific steps and detailed structures, so as to illustrate the technical solutions of the application. The preferred embodiments of the application are described in detail as follows, however, the application can have other implementation manners in addition to these detailed descriptions.
[0027] Please refer to Figures 1-3 A dual-fuel linear combustor according to a preferred embodiment of the application is shown in the figure, which includes a housing 1, a feeding assembly 2 and a nozzle assembly 3. The feeding assembly 2 is in communication with the nozzle assembly 3, the feeding assembly 2 is used for feeding fuel, and the nozzle assembly 3 is in communication with the feeding assembly and is used for releasing the fuel fed by the feeding assembly 2 through the nozzle assembly 3 for combustion.
[0028] Specifically, the housing 1 has a combustion air passage 11 in communication with a fan, a combustion air chamber 12 in communication with the combustion air passage 11, and a combustion chamber 13, the fan is used to provide combustion air to enter the combustion chamber 13 through the combustion air passage 11 to mix with the fuel for combustion; the feeding assembly 2 includes a bracket 21 installed inside the housing 1, a first feeding pipe 22 installed on the bracket 21, and a second feeding pipe 23 sleeved outside the first feeding pipe 22; the nozzle assembly 3 includes a plurality of nozzles 31 arranged along the feeding assembly 2, the plurality of nozzles 31 are located in the combustion chamber 13, each nozzle 31 includes a first communication pipe 311 in communication with the first feeding pipe 22 and a second communication pipe 312 sleeved outside the first communication pipe 311 and in communication with the second feeding pipe 23, the first communication pipe 311 has a first discharge port 313 in communication with the combustion chamber 13, the second communication pipe 312 has a second discharge port 314 in communication with the combustion chamber 13, and the first discharge port 313 and the second discharge port 314 do not overlap in the horizontal direction.
[0029] It can be understood that by setting the first feeding pipe 22 and the second feeding pipe 23 sleeved outside the first feeding pipe 22, and the corresponding nozzle assembly 3, the dual-fuel feeding and combustion is realized, and single fuel or dual fuel can be flexibly selected according to actual needs, the adaptability of the burner to different fuels is improved, the flexibility and universality of use are enhanced, and when switching between the two fuels, the nozzle does not need to be replaced, the operation is simple and fast, the downtime and maintenance cost caused by nozzle switching are reduced, and the production efficiency is improved.
[0030] For example, in actual application, in the case that high-calorific-value fuel is scarce or high in cost, low-calorific-value fuel is used as the main fuel, and high-calorific-value fuel is used to stabilize the flame.
[0031] It can be understood that the first discharge port 313 and the second discharge port 314 do not overlap in the horizontal direction, facilitating independent operation of the two fuels; when the two fuels are used together, they are sprayed at different horizontal heights, which is beneficial to the uniform mixing of the fuel and the combustion air, thereby improving the combustion efficiency and reducing energy waste.
[0032] In an optional embodiment, a plurality of flame stabilizing plates 4 are further arranged in the shell 1, the plurality of flame stabilizing plates 4 jointly separate the combustion air cavity 12 and the combustion cavity 13, and a plurality of air holes 41 and mounting holes 42 are arranged on the flame stabilizing plates 4, and the nozzle 31 is arranged on the mounting hole 42.
[0033] It can be understood that the air holes 41 arranged on the flame stabilizing plates 4 can make the combustion air uniformly enter the combustion cavity 13 and provide stable combustion air for the fuel, and at the same time, the flame stabilizing plates 4 also have a flame stabilizing effect, which can prevent the flame from being extinguished and improve the stability of combustion, especially when the fuel composition or pressure fluctuates, the combustion interruption can be effectively avoided.
[0034] In an optional embodiment, the first end of the first communication pipe 311 is provided with a thread 315 to be threadedly connected with the first feeding pipe 22, and the first discharge port 313 is located at the second end of the first communication pipe 311; the nozzle 31 further comprises a transition piece 32, the transition piece 32 comprises a connecting part 321 and a butt joint part 322 connected with the connecting part 321, the connecting part 321 is threadedly connected with the second feeding pipe 23, the butt joint part 322 is arranged around the outside of the second communication pipe 312, and the transition piece 32 is arranged flush with the inner wall of the second communication pipe 312.
[0035] In this embodiment, the first feeding pipe 22 and the second feeding pipe 23 are integrally formed.
[0036] It can be understood that the first communication pipe 311 is connected with the first feed pipe 22 by threads 315, and the connecting part 321 of the transition piece 32 is also connected with the second feed pipe 23 by threads, which is simple and reliable, has good sealing performance, can effectively prevent fuel gas leakage, and ensures the safety of the combustion process. When installing, the transition piece 32 can be connected with the second feed pipe 23 by threads first, and then the first communication pipe 311 is connected with the first feed pipe 22 by threads, and the lower end of the second feed end is abutted with the transition piece 32, which can ensure that there is no leakage risk between the first communication pipe 311 and the second communication pipe 312, and the first communication pipe 311 and the second communication pipe 312 are easy to install.
[0037] It can be understood that the abutting part 322 of the transition piece 32 is arranged around the outside of the second communication pipe 312 and is flush with the inner wall of the second communication pipe 312, which helps to reduce the resistance of the second fuel gas when it is sprayed out, so that the fuel can be more smoothly sprayed out and mixed with the combustion air for combustion, improving the combustion efficiency and flame quality.
[0038] In an optional embodiment, the installation hole 42 has a diameter larger than that of the second communication pipe 312, and the second communication pipe 312 further has a lap part arranged circumferentially and lapped with the flame stabilizing plate 4.
[0039] It can be understood that, due to the provision of the transition piece 32, the installation hole 42 has a diameter larger than that of the second communication pipe 312, and the circumferentially arranged lap part of the second communication pipe 312 is lapped with the flame stabilizing plate 4, which can avoid the transition connection between the outer surface of the second communication pipe 312 and the inner surface of the installation hole 42 for ensuring the sealing performance, and the provision of the lap part can ensure the sealing performance, thereby reducing the installation difficulty, improving the production efficiency, and facilitating the maintenance and replacement of the nozzle 31.
[0040] In an optional embodiment, the upper end of the combustion chamber 13 is circumferentially spaced apart and provided with a plurality of inwardly bent claws 14.
[0041] It can be understood that when there is unburned fuel passing through, the claws 14 have a high-temperature surface due to continuous heat exchange, and when the unburned fuel passes through, the high-temperature claws 14 can ignite the fuel, promote complete combustion of the fuel, reduce the emission of incomplete combustion products, and improve the combustion efficiency and environmental performance.
[0042] In an optional embodiment, the combustion chamber 13 and the combustion chamber 13 are each composed of a plurality of sheet metal parts 5 spliced together, and at least partially overlapped.
[0043] It can be understood that the splicing of the sheet metal parts 5 facilitates the manufacture and assembly of the burner, and also facilitates the cleaning, maintenance and modification of the inside of the combustion chamber 13 when needed, thereby reducing the maintenance cost of the equipment.
[0044] In an alternative embodiment, the several sheet metal pieces 5 of the combustion chamber 13 are also provided with reinforcing ribs 51, which greatly enhance the deformation resistance of the combustion chamber 13 in a high-temperature environment, effectively preventing problems such as uneven combustion and fuel leakage caused by deformation of the combustion chamber 13, and ensuring long-term stable operation of the burner.
[0045] The above is only one specific embodiment of the present application, and any improvement made on the basis of the concept of the present application is considered to be within the protection scope of the present application.
Claims
1. A dual fuel linear burner characterized by, The utility model relates to a kind of combustion equipment, including: Shell, with combustion air duct and combustion cavity and combustion cavity being communicated with fan; Feed assembly, including support installed inside the shell, first feed pipe installed on the support and second feed pipe sleeved outside the first feed pipe; Nozzle assembly, including several nozzles arranged along the feed assembly, several nozzles are located in the combustion cavity, each nozzle includes first communication pipe being communicated with the first feed pipe and second communication pipe being sleeved outside the first communication pipe and being communicated with the second feed pipe, the first communication pipe has first discharge port being communicated with the combustion cavity, the second communication pipe has second discharge port being communicated with the combustion cavity, and the first discharge port and the second discharge port do not overlap in horizontal direction.
2. The dual fuel linear combustor of claim 1, wherein, Several flame stabilizing plates are also arranged in the shell, several flame stabilizing plates are commonly separated combustion cavity and combustion cavity, and several air holes and mounting holes are arranged on the flame stabilizing plate, and the nozzle is used to be mounted on the mounting hole.
3. The dual fuel linear combustor of claim 2, wherein, The first end of the first communication pipe is provided with screw thread to be threadedly connected with the first feed pipe, and the first discharge port is located at the second end of the first communication pipe. The nozzle also includes a transition piece, the transition piece includes a connecting portion and a docking portion connected with the connecting portion, the connecting portion is threadedly connected with the second feed pipe, the docking portion is surrounded outside the second communication pipe, and the transition piece is flush with the inner wall of the second communication pipe.
4. The dual fuel linear combustor of claim 3, wherein, The diameter of the mounting hole is greater than the diameter of the second communication pipe, and the second communication pipe also has a lap portion arranged circumferentially, and the lap portion is lapped with the flame stabilizing plate.
5. The dual fuel linear combustor of claim 3, wherein, The upper end of the combustion cavity is circumferentially spaced apart by several inwardly bent claws.
6. The dual fuel linear combustor of claim 1, wherein, The combustion cavity and the combustion cavity are composed of several sheet metal parts, and at least partially overlap between two adjacent sheet metal parts.
7. The dual fuel linear combustor of claim 3, wherein, Several sheet metal parts of the combustion cavity are also provided with reinforcing ribs.
8. The dual fuel linear combustor of claim 1, wherein, The first feed pipe and the second feed pipe are integrally formed.