High-temperature-resistant material channel heat-insulating combustor

Abstract

The utility model discloses a kind of high-temperature-resistant material channel heat preservation combustor, it is related to glass kiln material channel heat preservation technical field, including natural gas inlet pipe, oxygen inlet pipe, natural gas connecting pipe, combustor import connecting piece, oxygen nozzle connecting piece, oxygen nozzle and natural gas nozzle.The utility model is made by setting oxygen nozzle using zirconium mullite material, temperature resistance can reach 1600 ℃, can directly bear the high-temperature environment (temperature is greater than 900 ℃, for example 1250 ℃) required by material channel heat preservation, compared with conventional metal piece, it is not easy to burn loss, avoid affecting on-site use;By setting oxygen nozzle using venturi type structure (import end inner diameter>export end inner diameter), when oxygen flows into from the import end of oxygen nozzle, cavity inner diameter reduces and makes oxygen flow rate instantaneously increase, forms negative pressure suction effect, this effect can actively drag natural gas that natural gas nozzle sprays, break the limitation of "gas, oxygen passive mixing" of original combustor, realize the fast, uniform mixing of both.

Description

Technical Field

[0001] This utility model belongs to the field of glass kiln material channel insulation technology, and in particular relates to a high-temperature resistant material channel insulation burner. Background Technology

[0002] In the glass furnace production process, after the molten glass is discharged, it is conveyed to various production lines through the feed channel. The molten glass is very easy to cool and solidify after leaving the furnace, so the feed channel needs to be insulated and heated to prevent the molten glass from cooling and solidifying.

[0003] For example, CN202808565U discloses a burner for glass kiln firing, comprising a premixed main pipe and a gas pipe. One end of the gas pipe is connected to gas, and the other end is inserted into the premixed main pipe. The premixed main pipe has several flame holes, and the diameter of the gas pipe is smaller than that of the premixed main pipe. The gas jet injected into the gas pipe draws primary air through the gap between the premixed main pipe and the gas pipe. The premixed main pipe has multiple forked combustion flame holes. This burner can heat the kiln from a low temperature to 900℃, ensuring strong kiln firing safety and good firing quality.

[0004] The above-mentioned patent has the following defects in use:

[0005] This burner can only meet the requirement of heating the kiln from a low temperature to 900℃. When the insulation temperature requirement of the glass material channel is higher (temperature greater than 900℃, such as 1250℃), the conventional metal material channel insulation burner is very easy to burn out, affecting the use on site. Therefore, this utility model proposes a high temperature resistant material channel insulation burner. Utility Model Content

[0006] This invention provides a high-temperature resistant feed channel insulation burner. The oxygen nozzle is made of zircon-containing mullite material, capable of withstanding temperatures up to 1600℃, directly withstanding the high-temperature environment required for feed channel insulation (temperatures greater than 900℃, such as 1250℃). Compared to conventional metal parts, it is less prone to burn-out, avoiding impact on on-site use. The oxygen nozzle employs a Venturi structure (inlet diameter > outlet diameter). When oxygen flows in from the inlet, the reduced inner diameter of the cavity instantly increases the oxygen flow rate, creating a negative pressure suction effect. This effect actively draws the natural gas ejected from the natural gas nozzle. Breaking away from the limitations of the original burner's "passive mixing of gas and oxygen," this technology can achieve rapid and uniform mixing of the two even at a high temperature of 1250℃, avoiding incomplete combustion caused by excessively high local gas concentrations. By setting a 15° tilt angle at the nozzle edge of the oxygen nozzle outlet, and with the natural gas nozzle located inside the oxygen nozzle, natural gas can be ejected along the central axis of the burner, while oxygen is ejected along the 15° tilt direction. This creates a "center-side" cross-convective trajectory at the nozzle, further promoting thorough mixing of oxygen and gas, thus resulting in more complete combustion. In summary, this technology solves the problems in the background technology.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model discloses a high-temperature resistant material channel heat-insulating burner, comprising:

[0009] The system includes a natural gas inlet pipe, an oxygen inlet pipe, a natural gas connecting pipe, a burner inlet connector, an oxygen nozzle connector, an oxygen nozzle, and a natural gas nozzle. One end of the natural gas inlet pipe is threadedly connected to the natural gas connecting pipe. The burner inlet connector is fixedly sleeved on the outer wall of one end of the natural gas connecting pipe. The natural gas connecting pipe is fixedly connected to the natural gas nozzle. The burner inlet connector is threadedly connected to the oxygen nozzle connector. One side of the burner inlet connector has a threaded interface, and the oxygen inlet pipe is threadedly connected to the burner inlet connector through the threaded interface. A sealing gasket is provided between the oxygen nozzle connector and the oxygen nozzle, and the oxygen nozzle is pressed and fixed onto the oxygen nozzle connector by the sealing gasket. The natural gas nozzle is located inside the oxygen nozzle.

[0010] Furthermore, the outer wall of one end of the natural gas inlet pipe, the oxygen inlet pipe, and the burner inlet connector is provided with external threads, and the inner wall of one end of the natural gas connector and the oxygen nozzle connector is provided with internal threads that match the external threads. The natural gas inlet pipe and the natural gas connector, as well as the burner inlet connector and the oxygen nozzle connector, are connected by external and internal threads. The oxygen inlet pipe is connected to the threaded interface on the burner inlet connector by the external thread.

[0011] Furthermore, the oxygen nozzle is made of zircon-containing mullite material.

[0012] Furthermore, the oxygen nozzle adopts a venturi structure, and the inner diameter of the inlet end of the oxygen nozzle is larger than the inner diameter of its outlet end.

[0013] Furthermore, the oxygen nozzle has an outlet end with a nozzle, and the edge of the nozzle is inclined at an angle of 15°.

[0014] The present invention has the following advantages over the prior art:

[0015] 1. Excellent high temperature resistance and not easily burned: This technical solution uses oxygen nozzles made of zircon-containing mullite material, which can withstand temperatures up to 1600℃. It can directly withstand the high temperature environment required for material channel insulation (temperature greater than 900℃, such as 1250℃). Compared with conventional metal parts, it is not easily burned, thus avoiding affecting on-site use.

[0016] 2. Accelerated mixing effect of Venturi structure: This technical solution uses a Venturi structure for the oxygen nozzle (inlet diameter > outlet diameter). When oxygen flows in from the inlet of the oxygen nozzle, the reduced inner diameter of the cavity will instantly increase the oxygen flow rate, forming a negative pressure suction effect. This effect can actively pull the natural gas ejected from the natural gas nozzle, breaking the limitation of the original burner's "passive mixing of gas and oxygen". Even at a high temperature of 1250℃, it can still achieve rapid and uniform mixing of the two, avoiding incomplete combustion caused by excessively high local gas concentration.

[0017] 3. Optimization of directional mixing with a 15° tilted nozzle: This technical solution sets a 15° tilt angle at the nozzle edge at the oxygen nozzle outlet, while the natural gas nozzle is located inside the oxygen nozzle. This allows natural gas to be ejected along the central axis of the burner, while oxygen is ejected along the 15° tilt direction, creating a "center-side" cross-convective trajectory at the nozzle. This further promotes thorough mixing of oxygen and natural gas, resulting in more complete combustion.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a three-dimensional structural diagram of a high-temperature resistant material channel heat-insulating burner according to the present invention;

[0021] Figure 2 This is a partial three-dimensional structural diagram of a high-temperature resistant material channel heat-insulating burner according to the present invention;

[0022] Figure 3 This is a cross-sectional structural diagram of a high-temperature resistant material channel heat-insulating burner according to the present invention.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Natural gas inlet pipe; 2. Oxygen inlet pipe; 3. Natural gas connection pipe; 4. Burner inlet connector; 5. Oxygen nozzle connector; 6. Oxygen nozzle; 7. Natural gas nozzle. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Specific Implementation

[0027] Please see Figures 1-3 As shown, this utility model discloses a high-temperature resistant material channel heat-insulating burner, comprising:

[0028] The system includes a natural gas inlet pipe 1, an oxygen inlet pipe 2, a natural gas connecting pipe 3, a burner inlet connector 4, an oxygen nozzle connector 5, an oxygen nozzle 6, and a natural gas nozzle 7. One end of the natural gas inlet pipe 1 is threadedly connected to the natural gas connecting pipe 3. The burner inlet connector 4 is fixedly sleeved on the outer wall of one end of the natural gas connecting pipe 3. The natural gas connecting pipe 3 is fixedly connected to the natural gas nozzle 7. The burner inlet connector 4 is threadedly connected to the oxygen nozzle connector 5. A threaded interface is cut on one side of the burner inlet connector 4, and the oxygen inlet pipe 2 is threadedly connected to the burner inlet connector 4 through the threaded interface. A sealing gasket is provided between the oxygen nozzle connector 5 and the oxygen nozzle 6, and the oxygen nozzle 6 is pressed and fixed on the oxygen nozzle connector 5 by the sealing gasket. The natural gas nozzle 7 is located inside the oxygen nozzle 6.

[0029] In the specific implementation process, natural gas enters from the natural gas inlet pipe 1, passes through the natural gas connecting pipe 3 and directly reaches the natural gas nozzle 7 located inside the oxygen nozzle 6, and is sprayed out from the center of the burner. Oxygen enters from the oxygen inlet pipe 2 into the burner inlet connector 4, and then is introduced into the interior of the oxygen nozzle 6 through the oxygen nozzle connector 5 and sprayed out from the side. This achieves "separate transportation of fuel gas and combustion aid, avoiding the safety risks caused by premature mixing. In addition, the oxygen nozzle 6 and the oxygen nozzle connector 5 are pressed and fixed by a sealing gasket, which can enhance the sealing performance and reduce the risk of leakage."

[0030] Among them, the outer wall of one end of the natural gas inlet pipe 1, the oxygen inlet pipe 2 and the burner inlet connector 4 are all provided with external threads, and the inner wall of one end of the natural gas connector 3 and the oxygen nozzle connector 5 are all provided with internal threads that match the external threads. The natural gas inlet pipe 1 and the natural gas connector 3, as well as the burner inlet connector 4 and the oxygen nozzle connector 5, are all connected by external threads and internal threads. The oxygen inlet pipe 2 is connected to the threaded interface on the burner inlet connector 4 by external threads.

[0031] The external thread of the natural gas inlet pipe 1 is screwed into the internal thread of the natural gas connecting pipe 3 to form a sealed connection for the natural gas delivery channel; the external thread of the oxygen inlet pipe 2 is connected to the threaded interface on the burner inlet connector 4 to form a sealed connection for the oxygen delivery channel; the external thread of the burner inlet connector 4 is screwed into the internal thread of the oxygen nozzle connector 5 to achieve the connection and fixation of the oxygen path and the gas path, and the threaded connection allows the components to be disassembled individually (such as replacing the worn natural gas inlet pipe 1), which facilitates subsequent maintenance.

[0032] Among them, the oxygen nozzle 6 is made of zircon-containing mullite material.

[0033] The oxygen nozzle 6, made of zircon-mullite, can withstand temperatures up to 1800℃. The burner can be used safely in environments above 900℃, such as 1250℃ or 1600℃, without being easily damaged, thus avoiding affecting on-site use. Furthermore, the target temperature in the material channel needs to be maintained by adjusting the burner's power through the control system.

[0034] Among them, the oxygen nozzle 6 adopts a venturi structure, and the inner diameter of the inlet end of the oxygen nozzle 6 is larger than the inner diameter of its outlet end.

[0035] The oxygen nozzle 6 adopts a Venturi structure, and the inner diameter of the inlet end of the oxygen nozzle 6 is larger than the inner diameter of its outlet end. When oxygen flows in from the inlet end of the oxygen nozzle 6, the reduction in the inner diameter of the cavity will cause the oxygen flow rate to increase instantaneously (according to Bernoulli's principle), forming a negative pressure suction effect. This negative pressure can actively draw in the natural gas ejected from the natural gas nozzle 7 located inside the oxygen nozzle 6, forcing the two to undergo preliminary mixing before being ejected. This breaks the limitation of the original burner's "passive mixing of gas and oxygen". Even at a high temperature of 1250℃, the two can still achieve rapid and uniform mixing, avoiding incomplete combustion caused by excessively high local gas concentration.

[0036] The oxygen nozzle 6 has a nozzle at its outlet end, and the edge of the nozzle of the oxygen nozzle 6 has an inclined angle of 15°.

[0037] In this embodiment, the natural gas nozzle 7 is located inside the oxygen nozzle 6, and the nozzle edge of the oxygen nozzle 6 is provided with an inclined angle of 15° (the inclined direction is towards the central axis of the burner, and the inclined angle is at an angle of 15° with the central axis). This allows natural gas to be ejected along the central axis of the burner, while oxygen is ejected along the 15° inclined direction, so that the two form a "center-side" cross convection trajectory at the nozzle, further promoting the full mixing of oxygen and gas, thereby making combustion more complete.

[0038] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0039] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0040] The working principle of this utility model is as follows:

[0041] In use, natural gas enters through the natural gas inlet pipe 1, passes through the natural gas connecting pipe 3, and reaches the natural gas nozzle 7 located inside the oxygen nozzle 6, from which it is ejected from the center of the burner. Oxygen enters through the oxygen inlet pipe 2 into the burner inlet connector 4, and then passes through the oxygen nozzle connector 5 into the interior of the oxygen nozzle 6, from which it is ejected from the side. This achieves "separate delivery of fuel gas and combustion aid". When oxygen flows in from the inlet end of the oxygen nozzle 6, the inner diameter of the cavity narrows, causing the oxygen flow rate to increase instantaneously, forming a negative pressure suction effect. This negative pressure can actively draw in the natural gas ejected from the natural gas nozzle 7 located inside the oxygen nozzle 6, forcing the two to undergo preliminary mixing before being ejected. Furthermore, the nozzle edge of the oxygen nozzle 6 is provided with a 15° tilt angle, guiding the oxygen to be ejected along the 15° tilt direction, while the natural gas is ejected along the central axis of the burner, so that the two form a "center-side" cross-convection trajectory at the nozzle, further promoting the thorough mixing of oxygen and gas.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-temperature resistant material channel heat-insulating burner, characterized in that, include: The gas inlet pipe (1), oxygen inlet pipe (2), natural gas connecting pipe (3), burner inlet connector (4), oxygen nozzle connector (5), oxygen nozzle (6) and natural gas nozzle (7) are provided. One end of the natural gas inlet pipe (1) is threadedly connected to the natural gas connecting pipe (3). The burner inlet connector (4) is fixedly sleeved on the outer wall of one end of the natural gas connecting pipe (3). The natural gas connecting pipe (3) is fixedly connected to the natural gas nozzle (7). The burner inlet connector (4) is threadedly connected to the oxygen nozzle connector (5). A threaded interface is drilled on one side of the burner inlet connector (4). The oxygen inlet pipe (2) is threadedly connected to the burner inlet connector (4) through the threaded interface. A sealing gasket is provided between the oxygen nozzle connector (5) and the oxygen nozzle (6). The oxygen nozzle (6) is pressed and fixed on the oxygen nozzle connector (5) through the sealing gasket. The natural gas nozzle (7) is located inside the oxygen nozzle (6).

2. The high-temperature resistant material channel heat-insulating burner according to claim 1, characterized in that, The outer wall of one end of the natural gas inlet pipe (1), oxygen inlet pipe (2) and burner inlet connector (4) is provided with external threads, and the inner wall of one end of the natural gas connector (3) and oxygen nozzle connector (5) is provided with internal threads that match the external threads. The natural gas inlet pipe (1) and the natural gas connector (3) and the burner inlet connector (4) and the oxygen nozzle connector (5) are connected by external threads and internal threads. The oxygen inlet pipe (2) is connected to the threaded interface on the burner inlet connector (4) by external threads.

3. The high-temperature resistant material channel heat-insulating burner according to claim 1, characterized in that, The oxygen nozzle (6) is made of zircon-containing mullite material.

4. The high-temperature resistant material channel heat-insulating burner according to claim 1, characterized in that, The oxygen nozzle (6) adopts a venturi structure, and the inner diameter of the inlet end of the oxygen nozzle (6) is larger than the inner diameter of its outlet end.

5. A high-temperature resistant material channel heat-insulating burner according to claim 4, characterized in that, The oxygen nozzle (6) has an outlet at its outlet end, and the edge of the outlet of the oxygen nozzle (6) has an inclined angle of 15°.

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