Efficient controllable gas burner nozzle

Abstract

The utility model mainly relates to the technical field of combustion equipment, in particular to an efficient controllable gas burner nozzle which comprises a nozzle welding body, one side of the nozzle welding body is fixedly connected with an outer nozzle, and the other side of the nozzle welding body is fixedly connected with a flame detection connector. A fuel gas access pipe, a first combustion-supporting gas access pipe and a second combustion-supporting gas access pipe are arranged in the nozzle welding body and located on one side of the flame detection connector, and an ignition connector is further fixedly connected to the outer end of the side, located on the flame detection connector, of the nozzle welding body. The first combustion-supporting gas access pipe and the ignition interface are adjacently arranged, and the fuel gas access pipe and the second combustion-supporting gas access pipe are adjacently arranged; the gas burner nozzle has the advantages of being simple in structural design, efficient and controllable in burning, energy-saving, consumption-reducing, environment-friendly, convenient to maintain and wide in application scene.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of combustion equipment, in particular to a highly efficient and controllable gas burner burner nozzle. Background Art

[0002] Burners are combustion devices used on industrial fuel furnaces. They are usually equipped with fuel inlets, combustion-supporting gas inlets and nozzles. They compress the combustion-supporting gas (usually air or pure oxygen) to turn it into a high-speed airflow and ignite the fuel in the burner. By properly setting the ratio of fuel and combustion-supporting gas, a flame with high kinetic energy, strong rigidity and long propagation distance can be generated, and it is widely used in various industrial fields.

[0003] Commonly used burners are low-pressure and high-speed burners, and the combustion gas ejection speed can reach more than 100 meters per second. The combustion air can make the combustion gas at the outlet reach the temperature required for actual working.

[0004] The existing gas burner nozzle design and production has the following difficulties:

[0005] 1. Incomplete combustion of internal gas produces harmful gases and causes waste of resources;

[0006] 2. The flow rate of the combustion gas depends on the pressure of the air pump, which cannot ensure that the flame after combustion is fast enough;

[0007] 3. Most of the gas burner nozzles are welded as a whole, which is inconvenient to disassemble and maintain;

[0008] 4. It is difficult to adjust the burner flame for stable combustion, and there are risks of flashback and flameout.

[0009] Therefore, we provide a highly efficient and controllable gas burner nozzle to solve the defects in the prior art. Utility Model Content

[0010] The utility model mainly provides a highly efficient and controllable gas burner burner nozzle, which has the advantages of simple structural design, efficient and controllable combustion, energy saving and consumption reduction, environmental protection, convenient maintenance, and a wide range of applicable scenarios, and is used to solve the technical problems raised in the above background technology.

[0011] The technical solution adopted by the utility model to solve the above technical problems is:

[0012] A high-efficiency controllable gas burner burner comprises a nozzle welded body, one side of the nozzle welded body is fixedly connected to an outer nozzle, the other side of the nozzle welded body is fixedly connected to a fire detection interface, a fuel gas access pipe, a first combustion-supporting gas access pipe and a second combustion-supporting gas access pipe are respectively arranged inside the nozzle welded body and on one side of the fire detection interface, and the outer end of the nozzle welded body on one side of the fire detection interface is also fixedly connected to an ignition interface.

[0013] Furthermore, the fuel gas access pipe, the first combustion-supporting gas access pipe and the second combustion-supporting gas access pipe are connected to the gas outlet cover located on the outer nozzle side, and the mixed gas leads to the outer nozzle, and a working chamber is provided inside each access pipe and the outer nozzle.

[0014] Furthermore, a mounting flange is provided in the middle of the nozzle welding body, and a front end threaded flange is also provided on one side of the nozzle welding body located at the fire detection interface, and is closed with a sealing cover, and external threads are provided inside the mounting flange and the front end threaded flange, so that the connecting pipes can be engaged through the external threads for easy installation, and a sealing ring is provided on the surface of the connecting pipe to prevent air leakage of the flange, and at the same time, the flanges on the mounting flange and the front end threaded flange and each pipe are connected by bolts and nuts.

[0015] Furthermore, the first combustion-supporting gas inlet pipe and the ignition interface are arranged adjacent to each other, and the fuel gas inlet pipe and the second combustion-supporting gas inlet pipe are arranged adjacent to each other.

[0016] Furthermore, the gas outlet cover is provided with uniform annular air holes, so that the accelerated fuel gas and the combustion-supporting gas are evenly mixed at the outer nozzle and accelerated during the flow, forcing the combustion to be more rapid. An acceleration pipe is provided at the front end of the gas outlet cover, and the fuel gas flows in the acceleration pipe. When passing through the smaller aperture in the middle section of the acceleration pipe, it will be accelerated due to the increase in gas pressure.

[0017] Furthermore, filter columns are installed at each access pipe of the fuel gas access pipe, the first combustion-supporting gas access pipe and the second combustion-supporting gas access pipe. A metal filter is provided inside the filter column to filter out solid impurities in the fuel gas and the combustion-supporting gas to ensure sufficient combustion and reduce the generation of polluted gases.

[0018] Furthermore, the fuel gas access pipe, the first combustion-supporting gas access pipe and the second combustion-supporting gas access pipe are all provided with control valves and gas flow meters to control the opening and closing of each access pipe and detect changes in the access flow of the gas.

[0019] Compared with the prior art, the utility model has the following innovative features in design and production:

[0020] (1) By rationally allocating the proportions of the main fuel gas inlet pipe, the first combustion-supporting gas inlet pipe, and the second combustion-supporting gas inlet pipe, the fuel combustion intensity can be linearly adjusted, and the flame intensity, rigidity, temperature and other properties of the burner output can be controlled within a certain range;

[0021] The fuel burns efficiently, saves energy and is environmentally friendly. The scientific model design improves the combustion efficiency of the burner, which not only meets the operational requirements, but also greatly reduces the output of fuel, saves energy, and controls industrial production costs. At the same time, it reduces the generation of pollutants, which is in line with the current national environmental protection economic policy vigorously promoted and keeps up with the development trend of the green economy;

[0022] The flame is linearly controllable and can be used in many scenarios. The fuel gas and combustion-supporting gas in this example use PWN technology in the control ratio method, which can accurately adjust the heat output of combustion and thus control the output temperature. When this example is applied in different industrial scenarios, the flame kinetic energy, rigidity, temperature, strength and other parameters can be set to meet different practical needs, and the prospect of promotion and application is broad;

[0023] Reasonable temperature control to extend the life of the burner. The two combustion-supporting gas access pipes can not only ensure the combustion-supporting agent required for the full combustion of the fuel gas, but also adjust the combustion temperature by controlling the input amount and input speed of the combustion-supporting gas, thereby reducing the probability of the burner being damaged due to excessive combustion temperature and saving production and operating costs.

[0024] (2) The filter element can filter out impurities in the fuel gas and the combustion-supporting gas. The gas outlet cover is provided with uniform annular air holes so that the accelerated fuel gas and the combustion-supporting gas are evenly mixed at the outer nozzle and flow accelerated. The sealing ring is provided at the flange installation to ensure that there is no risk of gas leakage at each interface. These three designs ensure more rapid and full combustion and improve resource utilization.

[0025] (3) The burner is divided into multiple modules according to its function, and the burner is assembled by installing a flange, a front threaded flange bolt, and a nut. This makes the utility model easy to disassemble and assemble, which can improve the convenience and efficiency of maintenance and overhaul, and solves the problem of inconvenient disassembly and maintenance of existing gas burner burners during use. When disassembling, the staff only needs to use a wrench to easily separate the nuts, bolts, and flanges, and then perform maintenance and overhaul on each part separately. When maintaining industrial equipment, convenience is an important part of improving work efficiency. The new modular design of this example greatly improves the disassembly and assembly efficiency of maintenance workers and ensures the continuity of subsequent operations.

[0026] (4) The external mixing burner design avoids the occurrence of flashback.

[0027] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the gas burner burner of the utility model;

[0029] Figure 2 It is a schematic diagram of the plane structure of the gas burner burner of the utility model;

[0030] Figure 3 for Figure 2 Schematic diagram of the structure after partial enlargement.

[0031] In the figure: 1. Nozzle welding body; 2. Outer nozzle; 3. Fuel gas inlet pipe; 4. First combustion-supporting gas inlet pipe; 5. Second combustion-supporting gas inlet pipe; 6. Gas outlet cover; 7. Mounting flange; 8. Front end threaded flange; 9. Ignition interface; 10. Fire detection interface. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0033] For examples, please refer to the attached Figure 1-3 As shown, a high-efficiency controllable gas burner burner includes a nozzle welded body 1, one side of the nozzle welded body 1 is fixedly connected to an outer nozzle 2, the other side of the nozzle welded body 1 is fixedly connected to a fire detection interface 10, the interior of the nozzle welded body 1 and located on one side of the fire detection interface 10 are respectively provided with a fuel gas access pipe 3, a first combustion-supporting gas access pipe 4 and a second combustion-supporting gas access pipe 5, the outer end of the nozzle welded body 1 on one side of the fire detection interface 10 is also fixedly connected to an ignition interface 9, the various components are concentrated in the middle part of the flange, and the joints of the various components are sealed with different types of O-rings to improve the sealing of the joints.

[0034] Among them, the fuel gas access pipe 3, the first combustion-supporting gas access pipe 4 and the second combustion-supporting gas access pipe 5 are connected to the gas outlet cover 6 located on the side of the outer nozzle 2, and the mixed gas leads to the outer nozzle 2, and a working chamber is provided inside each access pipe and the outer nozzle 2; the first combustion-supporting gas access pipe 4 and the ignition interface 9 are adjacently arranged, and the fuel gas access pipe 3 and the second combustion-supporting gas access pipe 5 are adjacently arranged.

[0035] Among them, a mounting flange 7 is provided in the middle of the nozzle welding body 1, and a front end threaded flange 8 is also provided on one side of the nozzle welding body 1 located at the fire detection interface 10, and is closed with a cover, and external threads are provided inside the mounting flange 7 and the front end threaded flange 8, so that the pipeline can be connected through the external thread engagement, which is convenient for installation, and a sealing ring is provided on the surface of the connecting pipeline to prevent air leakage of the flange. At the same time, the flanges on the mounting flange 7 and the front end threaded flange 8 and the pipelines are matched and connected by bolts and nuts.

[0036] Among them, the gas outlet cover 6 is provided with uniform annular air holes, so that the accelerated fuel gas and the combustion-supporting gas are evenly mixed at the outer nozzle 2 and accelerated during the flow, forcing the combustion to be more rapid. An acceleration pipe is arranged at the front end of the gas outlet cover 6. The fuel gas flows in the acceleration pipe. When passing through the smaller aperture in the middle section of the acceleration pipe, it will be accelerated due to the increase in gas pressure.

[0037] Among them, filter columns are installed at each access pipe of the fuel gas access pipe 3, the first combustion-supporting gas access pipe 4 and the second combustion-supporting gas access pipe 5. A metal filter mesh is provided in the filter column to filter out solid impurities in the fuel gas and the combustion-supporting gas to ensure sufficient combustion and reduce the generation of polluted gases.

[0038] Among them, the fuel gas access pipe 3, the first combustion-supporting gas access pipe 4 and the second combustion-supporting gas access pipe 5 are all provided with control valves and gas flow meters. The control valves are used to control the opening and closing of each access pipe, and the gas flow meters set on the pipelines are used to detect changes in the gas access flow.

[0039] The specific operation mode of the utility model is as follows:

[0040] First, the burner is divided into multiple modules according to its function, and the burner is assembled using the mounting flange 7, the front threaded flange 8, bolts and nuts, and then put into use after the assembly is completed;

[0041] During use, the fuel gas is fed into the burner through the fuel gas access pipe 3, and enters the acceleration pipe after passing through the ignition device, and generates a high-temperature and high-speed fuel gas flow through the smaller aperture in the middle section of the acceleration pipe; the combustion-supporting gas is fed into the burner through the combustion-supporting gas access pipe, and the flow rate is increased through the reduced diameter in the burner, generating a high-speed gas flow; the fuel gas and the combustion-supporting gas are evenly mixed through the annular small hole of the gas outlet cover 6, and then ejected at high speed at the outer nozzle 2, generating an open flame with large kinetic energy, strong rigidity and high temperature. Since the burner adopts an external mixing method, the possibility of flashback is avoided. When using the burner, the gas flow rate can be adjusted according to actual needs to ensure the normal supply and combustion of gas in the burner.

[0042] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A highly efficient and controllable gas burner nozzle, comprising a nozzle welded body (1), characterized in that: An outer nozzle (2) is fixedly connected to one side of the nozzle welding body (1), and a fire detection interface (10) is fixedly connected to the other side of the nozzle welding body (1). A fuel gas inlet pipe (3), a first combustion-supporting gas inlet pipe (4), and a second combustion-supporting gas inlet pipe (5) are respectively provided inside the nozzle welding body (1) and on one side of the fire detection interface (10). An ignition interface (9) is also fixedly connected to the outer end of the nozzle welding body (1) on one side of the fire detection interface (10).

2. The high-efficiency controllable gas burner nozzle according to claim 1, characterized in that: The fuel gas inlet pipe (3), the first combustion-supporting gas inlet pipe (4) and the second combustion-supporting gas inlet pipe (5) are connected to a gas outlet cap (6) located on the side of the outer nozzle (2), and the mixed gas flows to the outer nozzle (2), and a working chamber is provided inside each inlet pipe and the outer nozzle (2).

3. The high-efficiency controllable gas burner nozzle according to claim 1, characterized in that: A mounting flange (7) is provided in the middle of the nozzle welding body (1), and a front end threaded flange (8) is also provided on one side of the nozzle welding body (1) located at the fire detection interface (10), and is closed by a cover, and external threads are provided inside the mounting flange (7) and the front end threaded flange (8), and a sealing ring is provided on the surface of the connecting pipe, and the flange plates on the mounting flange (7) and the front end threaded flange (8) are matched and connected to each pipe by bolts and nuts.

4. The high-efficiency controllable gas burner nozzle according to claim 1, characterized in that: The first combustion-supporting gas inlet pipe (4) and the ignition interface (9) are arranged adjacent to each other, and the fuel gas inlet pipe (3) and the second combustion-supporting gas inlet pipe (5) are arranged adjacent to each other.

5. The high-efficiency controllable gas burner nozzle according to claim 2, characterized in that: The gas outlet cover (6) is provided with uniform annular gas holes, and an acceleration pipeline is provided at the front end of the gas outlet cover (6).

6. The high-efficiency controllable gas burner nozzle according to claim 1, characterized in that: A filter column is installed at each access pipe of the fuel gas access pipe (3), the first combustion-supporting gas access pipe (4) and the second combustion-supporting gas access pipe (5), and a metal filter screen is arranged inside the filter column.

7. The high-efficiency controllable gas burner nozzle according to claim 6, characterized in that: The fuel gas inlet pipe (3), the first combustion-supporting gas inlet pipe (4) and the second combustion-supporting gas inlet pipe (5) are all provided with control valves and gas flow meters.

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