Multi-nozzle integrated oxyhydrogen flame burner

Abstract

The utility model provides a multi-nozzle integrated oxyhydrogen flame burner which comprises a base, and a first cavity and a second cavity which are isolated from each other are arranged in the base. A plurality of groups of air supply pipelines are arranged on the base, a spray head is mounted at the tail end of each group of air supply pipelines, and the spray heads of the plurality of groups of air supply pipelines are arranged in an arc array; each group of gas supply pipelines comprises a hydrogen pipeline and an oxygen pipeline, one end of the hydrogen pipeline is communicated with the first cavity, and the other end of the hydrogen pipeline is communicated with the spray head; one end of the oxygen pipeline is communicated with the second cavity, and the other end of the oxygen pipeline is communicated with the nozzle; a first air inlet pipeline is arranged on the side wall of the first cavity, and a second air inlet pipeline is arranged on the side wall of the second cavity. According to the utility model, the plurality of nozzles are arranged in the arc-shaped array, so that quartz bars or pipes can be simultaneously heated from multiple angles during combustion, and the heating efficiency and the uniformity of flame heating are improved.

Description

Technical Field

[0001] The present application relates to the technical field of burners, and in particular to a multi-nozzle integrated oxyhydrogen flame burner. Background Art

[0002] The oxyhydrogen flame burner is mainly used to fuse the optical fiber preform rod and the quartz glass tail rod at high temperature. The mother rod after fusion is subjected to the drawing process to complete the manufacture of optical fiber products. Optical fiber is transmitted by optical communication. The manufacture of optical fiber mother rod is a technology-intensive and process-complex product. In view of the relatively expensive price of mother rod, in order to make full use of the mother material for fiber drawing, the method of adding tail rod is adopted to solve the problem, and satisfactory results have been achieved. Because the tail rod material is also quartz glass, which is similar to the mother rod, the expansion coefficient matches. Therefore, the oxyhydrogen flame burner is an essential device in optical fiber drawing.

[0003] Currently available oxyhydrogen flame burners generally use a single blowtorch to heat the weld, resulting in poor uniformity of flame heating and low heating efficiency. Summary of the invention

[0004] The present application provides a multi-nozzle integrated oxyhydrogen flame burner, which solves the problems of poor flame heating uniformity, low heating efficiency, etc. existing in the oxyhydrogen flame burner.

[0005] The present application provides a multi-nozzle integrated oxyhydrogen flame burner, comprising a base, wherein a first cavity and a second cavity isolated from each other are provided inside the base; a plurality of groups of gas supply pipes are provided on the base, a nozzle is installed at the end of each group of gas supply pipes, and the nozzles of the plurality of groups of gas supply pipes are arranged in an arc array; each group of the gas supply pipes comprises a hydrogen pipe and an oxygen pipe, one end of the hydrogen pipe is connected to the first cavity, and the other end is connected to the nozzle; one end of the oxygen pipe is connected to the second cavity, and the other end is connected to the nozzle; a first air inlet pipe is provided on the side wall of the first cavity, and a second air inlet pipe is provided on the side wall of the second cavity.

[0006] In the technical solution provided in the present application, a first cavity for passing hydrogen and a second cavity for passing oxygen are provided inside the base, and a hydrogen pipeline connected to the first cavity and an oxygen pipeline connected to the second cavity are installed on the base, the hydrogen pipeline and the oxygen pipeline are connected to the nozzles respectively, and hydrogen and oxygen are respectively introduced into the first cavity and the second cavity through the first air inlet pipeline and the second air inlet pipeline, and the hydrogen and oxygen are fully mixed in the nozzle and then ejected for combustion; by arranging a plurality of nozzles in an arc array, the quartz rod or tube can be heated from multiple angles at the same time during combustion, thereby improving the heating efficiency and the uniformity of flame heating.

[0007] In certain embodiments, the hydrogen pipeline includes a fixed hydrogen tube and a movable hydrogen tube, the fixed hydrogen tube is rotatably connected to the movable hydrogen tube, one end of the fixed hydrogen tube away from the movable hydrogen tube is connected to the first cavity, and one end of the movable hydrogen tube away from the fixed hydrogen tube is connected to the nozzle; the oxygen pipeline includes a fixed oxygen tube and a movable oxygen tube, the fixed oxygen tube is rotatably connected to the movable oxygen tube, one end of the fixed oxygen tube away from the movable oxygen tube is connected to the second cavity, and one end of the movable oxygen tube away from the fixed oxygen tube is connected to the nozzle; by designing the hydrogen pipeline and the oxygen pipeline as a two-section structure in which a fixed tube and a movable tube are rotatably connected, the angle of the movable tube can be flexibly adjusted according to needs, thereby adjusting the flame spraying direction of the nozzle, thereby adapting to quartz rods or tubes of different diameters.

[0008] In some embodiments, the hydrogen fixed tube and the oxygen fixed tube are respectively connected to the corresponding hydrogen movable tube and the oxygen movable tube via a gas-guiding rotating joint. The gas-guiding rotating joint can realize angle adjustment of the movable tube and also realize a sealed connection between the fixed tube and the movable tube.

[0009] In some embodiments, a mixing chamber is provided inside the nozzle, and the mixing chamber is connected to a hydrogen pipeline or an oxygen pipeline; an independent buffer chamber is provided at the bottom of the mixing chamber, and the bottom of the buffer chamber is connected to an oxygen pipeline or a hydrogen pipeline, and the top of the buffer chamber is connected to a plurality of evenly distributed tubes arranged in an array, and the axial direction of the evenly distributed tubes is parallel to the axial direction of the nozzle; when the mixing chamber is connected to the hydrogen pipeline, the bottom of the buffer chamber is connected to the oxygen pipeline; when the mixing chamber is connected to the oxygen pipeline, the bottom of the buffer chamber is connected to the hydrogen pipeline; when oxygen enters the buffer chamber through the oxygen pipeline, the oxygen is evenly distributed in the plurality of evenly distributed tubes, and after hydrogen enters the mixing chamber through the hydrogen pipeline, it will quickly fill the remaining space in the mixing chamber except the evenly distributed tubes, so that the oxygen is fully mixed with the hydrogen in the mixing chamber after coming out of the evenly distributed tubes, thereby improving the stability of the oxyhydrogen flame combustion.

[0010] In some embodiments, a certain distance is left between the top surface of the uniformly distributed tube and the nozzle end surface of the nozzle, the purpose of which is to allow the oxygen coming out of the top of the uniformly distributed tube and the hydrogen in the mixing chamber to be fully mixed inside the nozzle and then sprayed out.

[0011] In some embodiments, the first air intake pipe includes a first air intake main pipe and two first air intake branch pipes, one end of the two first air intake branch pipes are connected to the first air intake main pipe, and the other ends of the two first air intake branch pipes are respectively connected to the two ends of the first cavity; the second air intake pipe includes a second air intake main pipe and two second air intake branch pipes, one end of the two second air intake branch pipes are connected to the second air intake main pipe, and the other ends of the two second air intake branch pipes are respectively connected to the two ends of the second cavity; by designing the air intake pipe as an air intake main pipe and two air intake branch pipes, hydrogen or oxygen is introduced into the interior of the first cavity or the second cavity from both ends thereof through the two air intake branch pipes at the same time, thereby further improving the uniformity of hydrogen or oxygen distribution.

[0012] In some embodiments, a nitrogen pipeline is bypassed by the first air intake pipeline, and a first valve assembly is provided on the nitrogen pipeline. By setting up the nitrogen pipeline bypassing the first air intake pipeline, nitrogen can be introduced into the first air intake pipeline after the combustion is completed to clean the hydrogen in the first cavity and the hydrogen pipeline, which can effectively prevent the residual hydrogen in the pipeline from being discharged after the flame is extinguished and encountering the high-temperature nozzle to form an explosion. On the one hand, such an explosion will produce abnormal noise, and on the other hand, it is also easy to cause the nozzle to rupture.

[0013] In some embodiments, a second valve assembly is disposed in the first air intake conduit, and a third valve assembly is disposed in the second air intake conduit.

[0014] In certain embodiments, the first valve assembly, the second valve assembly, and the third valve assembly all include one or more of a pressure regulating valve, a manual valve, a pneumatic valve, a ball valve, a one-way valve, and a needle valve; by arranging valve assemblies on the nitrogen pipeline, the first air intake pipeline, and the second air intake pipeline, the flow rate of nitrogen purge can be adjusted according to actual conditions, the nitrogen can be prevented from flowing back after entering the first air intake pipeline, and the on-off control of the three pipelines can be achieved.

[0015] In certain embodiments, the first air inlet pipe, the second air inlet pipe, and the nitrogen pipe are provided with one or more of a filter, a pressure gauge, a pressure sensor, a flame arrester, and a mass flow meter. By providing a filter, impurities in the gas can be prevented from clogging the nozzle; by providing a flame arrester, backflow of open flames can be prevented from causing safety hazards; by providing a pressure gauge and a pressure sensor, the air pressure in each pipe can be monitored in real time. When the air pressure exceeds a preset value, an alarm prompt can be responded to and the air intake can be closed in time to ensure system safety; by providing a mass flow meter, the flow of hydrogen and oxygen can be accurately controlled to achieve adjustment of flame intensity to meet different requirements for flame temperature in different optical fiber preform production processes.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in this application are used to illustrate preferred embodiments, so that those skilled in the art can clearly understand various other advantages and benefits, and should not be considered as limitations of this application. In addition, the same reference numerals are used throughout the drawings to represent the same or similar components.

[0018] Figure 1 This is a three-dimensional diagram of a multi-nozzle integrated oxyhydrogen flame burner in one embodiment of the present application;

[0019] Figure 2 This is a rear view of a multi-nozzle integrated oxyhydrogen flame burner in one embodiment of the present application;

[0020] Figure 3 This is a cross-sectional schematic diagram of a multi-nozzle integrated oxyhydrogen flame burner in one embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the internal structure of a nozzle in one embodiment of the present application;

[0022] Figure 5 A top view of a nozzle in one embodiment of the present application;

[0023] Figure 6 This is a control principle diagram of the gas supply pipeline in one embodiment of the present application;

[0024] Icons: 100, base; 110, first cavity; 120, second cavity; 200, gas supply pipeline; 210, hydrogen pipeline; 211, hydrogen fixed tube; 212, hydrogen movable tube; 220, oxygen pipeline; 221, oxygen fixed tube; 222, oxygen movable tube; 230, gas guide rotary joint; 240, nitrogen pipeline; 300, nozzle; 310, mixing chamber; 320, buffer chamber; 330, uniformly distributed tube; 400, first air intake pipeline; 410, first air intake main pipe; 420, first air intake branch pipe; 500, second air intake pipeline; 510, second air intake main pipe; 520, second air intake branch pipe; 600, quartz rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), unless otherwise clearly and specifically defined.

[0028] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0030] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] See also Figures 1 to 6 The embodiment of the present application provides an integrated oxyhydrogen flame burner with multiple nozzles 300, including a base 100, wherein a first cavity 110 and a second cavity 120 isolated from each other are provided inside the base 100; a plurality of groups of gas supply pipes 200 are provided on the base 100, and a nozzle 300 is installed at the end of each group of gas supply pipes 200, and the nozzles 300 of the plurality of groups of gas supply pipes 200 are arranged in an arc array; each group of gas supply pipes 200 includes a hydrogen pipe 210 and an oxygen pipe 220, wherein one end of the hydrogen pipe 210 is connected to the first cavity 110, and the other end is connected to the nozzle 300; one end of the oxygen pipe 220 is connected to the second cavity 120, and the other end is connected to the nozzle 300; a first air inlet pipe 400 is provided on the side wall of the first cavity 110, and a second air inlet pipe 500 is provided on the side wall of the second cavity 120.

[0032] In the technical solution provided in the embodiment of the present application, a first cavity 110 for passing hydrogen and a second cavity 120 for passing oxygen are provided inside the base 100, and a hydrogen pipeline 210 connected to the first cavity 110 and an oxygen pipeline 220 connected to the second cavity 120 are installed on the base 100, the hydrogen pipeline 210 and the oxygen pipeline 220 are connected to the nozzle 300 respectively, and hydrogen and oxygen are respectively introduced into the first cavity 110 and the second cavity 120 through the first air inlet pipeline 400 and the second air inlet pipeline 500, and the hydrogen and oxygen are fully mixed in the nozzle 300 and then ejected for combustion; by arranging a plurality of nozzles 300 in an arc array, the quartz rod 600 or the pipe can be heated from multiple angles at the same time during combustion, thereby improving the heating efficiency and the uniformity of flame heating.

[0033] Please continue reading Figures 1 to 3In a specific implementation, the gas supply pipelines 200 are provided with 6 groups in total (during the specific implementation, the number of the gas supply pipelines 200 can also be flexibly adjusted according to actual conditions), including 6 hydrogen pipelines 210 and 6 oxygen pipelines 220; the 6 groups of gas supply pipelines 200 are of different lengths (the middle pipeline is shorter and the pipelines on both sides are longer), and the nozzles 300 at the ends of the 6 groups of gas supply pipelines 200 are arranged in a fan-shaped array, and the 6 nozzles 300 spray flames toward the axis of the quartz rod 600 or the tube from multiple different angles.

[0034] Please continue reading Figure 1 , Figure 3 In some embodiments, the hydrogen pipeline 210 includes a hydrogen fixed pipe 211 and a hydrogen movable pipe 212, the hydrogen fixed pipe 211 is rotatably connected to the hydrogen movable pipe 212, the end of the hydrogen fixed pipe 211 away from the hydrogen movable pipe 212 is connected to the first cavity 110, and the end of the hydrogen movable pipe 212 away from the hydrogen fixed pipe 211 is connected to the nozzle 300; the oxygen pipeline 220 includes an oxygen fixed pipe 221 and an oxygen movable pipe 222, the oxygen fixed pipe 221 is connected to the oxygen movable pipe 222, The movable oxygen tube 222 is rotatably connected, and one end of the fixed oxygen tube 221 away from the movable oxygen tube 222 is connected to the second cavity 120, and one end of the movable oxygen tube 222 away from the fixed oxygen tube 221 is connected to the nozzle 300; by designing the hydrogen pipeline 210 and the oxygen pipeline 220 as a two-section structure in which the fixed tube and the movable tube are rotatably connected, the angle of the movable tube can be flexibly adjusted according to needs, thereby adjusting the flame spraying direction of the nozzle 300, thereby adapting to quartz rods 600 or pipes of different diameters.

[0035] Please continue reading Figure 1 , Figure 3 In some embodiments, the hydrogen fixed tube 211 and the oxygen fixed tube 221 are respectively connected to the corresponding hydrogen movable tube 212 and the oxygen movable tube 222 through a gas-guiding rotary joint 230. The gas-guiding rotary joint 230 can realize the angle adjustment of the movable tube and can also realize the sealed connection between the fixed tube and the movable tube (each rotary joint includes an O-ring, a locking nut and a metal spacer ring); the gas-guiding rotary joint 230 in this embodiment can adopt a stainless steel adjustable ball joint of model NPTBSPT, or other types of rotary joints, which are not specifically limited in this embodiment.

[0036] Please continue reading Figure 4 , Figure 5In some embodiments, a mixing chamber 310 is provided inside the nozzle 300, and the mixing chamber 310 is connected to the hydrogen pipeline 210 or the oxygen pipeline 220; an independent buffer chamber 320 is provided at the bottom of the mixing chamber 310, and the bottom of the buffer chamber 320 is connected to the oxygen pipeline 220 or the hydrogen pipeline 210, and the top of the buffer chamber 320 is connected to a plurality of array-arranged uniformly distributed tubes 330, and the axial direction of the uniformly distributed tubes 330 is parallel to the axial direction of the nozzle 300; when the mixing chamber 310 is connected to the hydrogen pipeline 210, the bottom of the buffer chamber 320 is connected to the oxygen pipeline 220; when the mixing chamber 310 is connected to the oxygen pipeline 220, the bottom of the buffer chamber 320 is connected to the hydrogen pipeline 210.

[0037] In this embodiment, the mixing chamber 310 is connected to the hydrogen pipeline 210, and the buffer chamber 320 is connected to the oxygen pipeline 220; when oxygen enters the buffer chamber 320 through the oxygen pipeline 220, the oxygen is evenly distributed in a plurality of uniformly distributed tubes 330, and after hydrogen enters the mixing chamber 310 through the hydrogen pipeline 210, it will quickly fill the remaining space in the mixing chamber 310 except the uniformly distributed tubes 330, so that the oxygen is fully mixed with the hydrogen in the mixing chamber 310 after coming out of the uniformly distributed tubes 330, thereby improving the stability of the hydrogen-oxygen flame combustion.

[0038] Please continue reading Figure 5 In a specific embodiment, there are 7 uniformly distributed tubes 330, 1 of which is coaxially arranged with the nozzle 300, and the remaining 6 are evenly arranged around the uniformly distributed tube 330 located at the center; during the specific implementation process, the specific number and layout of the uniformly distributed tubes 330 can be flexibly adjusted according to actual conditions.

[0039] Please continue reading Figure 4 In some embodiments, a certain distance is left between the top surface of the uniformly distributed tube 330 and the nozzle end surface of the nozzle 300, so that the oxygen coming out from the top of the uniformly distributed tube 330 and the hydrogen in the mixing chamber 310 are fully mixed inside the nozzle 300 and then sprayed out.

[0040] In some embodiments, a plurality of air holes (not shown) may be opened on the side wall of the uniformly distributed tube 330 so that the oxygen in the uniformly distributed tube 330 can overflow through the air holes and fully mix with the hydrogen in the mixing chamber 310, thereby further improving the uniformity of the mixing of hydrogen and oxygen.

[0041] Please continue reading Figure 1 , Figure 2In some embodiments, the first air intake pipe 400 includes a first air intake main pipe 410 and two first air intake branch pipes 420, one ends of the two first air intake branch pipes 420 are connected to the first air intake main pipe 410, and the other ends of the two first air intake branch pipes 420 are respectively connected to the two ends of the first cavity 110; the second air intake pipe 500 includes a second air intake main pipe 510 and two second air intake branch pipes 520, one ends of the two second air intake branch pipes 520 are connected to the second air intake main pipe 510, and the other ends of the two second air intake branch pipes 520 are respectively connected to the two ends of the second cavity 120; by designing the air intake pipe as an air intake main pipe and two air intake branch pipes, hydrogen or oxygen is introduced into the interior of the first cavity 110 or the second cavity 120 from both ends thereof through the two air intake branch pipes at the same time, thereby further improving the uniformity of hydrogen or oxygen distribution.

[0042] Please continue reading Figure 6 In some embodiments, the first air intake pipe 400 is bypassed by a nitrogen pipe 240, and a first valve assembly is provided on the nitrogen pipe 240. By setting the nitrogen pipe 240 bypassing the first air intake pipe 400, nitrogen can be introduced into the first air intake pipe 400 after the combustion is completed, and the hydrogen in the first cavity 110 and the hydrogen pipe 210 can be purged cleanly, which can effectively prevent the residual hydrogen in the pipe from being discharged into the high-temperature nozzle 300 after the flame is extinguished and causing an explosion. On the one hand, such an explosion will produce abnormal noise, and on the other hand, it is also easy to cause the nozzle 300 to rupture.

[0043] In some embodiments, a second valve assembly is disposed in the first air intake duct 400 , and a third valve assembly is disposed in the second air intake duct 500 .

[0044] In a specific embodiment, the first valve assembly, the second valve assembly, and the third valve assembly all include one or more of a pressure regulating valve, a manual valve, a pneumatic valve, a ball valve, a one-way valve, and a needle valve; the specific arrangement of the valve assembly in this embodiment is as follows: Figure 6 As shown (in the specific implementation process, the number of valves, the type of valves and the installation position can also be flexibly adjusted according to actual needs), by setting valve assemblies on the nitrogen pipeline 240, the first air intake pipeline 400 and the second air intake pipeline 500, the flow rate of nitrogen purge can be adjusted according to actual conditions, the backflow of nitrogen after entering the first air intake pipeline 400 can be prevented, and the on-off control of the three pipelines can be achieved.

[0045] Please continue reading Figure 6 In a specific embodiment, filters are provided on the first air intake pipe 400 , the second air intake pipe 500 , and the nitrogen pipe 240 to prevent impurities in the gas from clogging the nozzle 300 .

[0046] Please continue reading Figure 6In a specific embodiment, a mass flow meter (MFC) is provided on the first air inlet pipe 400 and the second air inlet pipe 500, which are respectively used to adjust the flow of hydrogen and oxygen to adjust the flame intensity to meet the different requirements of different optical fiber preform production processes for flame temperature.

[0047] Please continue reading Figure 6 In a specific embodiment, a one-way valve and a needle valve are provided on the nitrogen pipeline 240. The one-way valve is used to prevent hydrogen from flowing back into the nitrogen pipeline 240, and the needle valve is used to adjust the nitrogen flow rate.

[0048] Please continue reading Figure 6 In a specific embodiment, flame arresters are provided at the outlets of the first air intake duct 400 and the second air intake duct 500 to prevent the pipeline from backfire and avoid safety accidents.

[0049] Please continue reading Figure 6 In a specific embodiment, a pressure sensor is provided on the first air intake pipe 400 for real-time monitoring of the hydrogen pressure. Once the hydrogen pressure exceeds a set range, the system can be shut down in time to ensure system safety.

[0050] The working process of the oxyhydrogen flame burner of the present embodiment is as follows:

[0051] First, an oxyhydrogen flame burner is placed below the quartz rod 600 to be welded, so that the quartz rod 600 is located at the center of the multiple nozzles 300; hydrogen and oxygen are introduced into the first cavity 110 and the second cavity 120 through the first air inlet pipe and the second air inlet pipe respectively, and the hydrogen enters the mixing cavity 310 of the nozzle 300 through the hydrogen pipeline 210, and the oxygen enters the buffer cavity 320 of the nozzle 300 through the oxygen pipeline 220, and is distributed through the multiple uniformly distributed pipes 330 and fully mixed with the hydrogen in the mixing cavity 310, and then ejected from the nozzle of the nozzle 300, so as to spray the nozzles. After 300 is ignited, the target quartz rod 600 can be heated; when the heating is completed, the introduction of hydrogen and oxygen is stopped, and nitrogen is introduced into the first air inlet pipe through the nitrogen pipeline 240. The nitrogen enters the first cavity 110, and then enters the mixing chamber 310 of the nozzle 300 through the hydrogen pipeline 210 and is ejected from the nozzle of the nozzle 300. The nitrogen can purge the residual hydrogen in the pipeline to prevent the residual hydrogen in the pipeline from being discharged from the high-temperature nozzle 300 after the flame is extinguished and forming an explosion, thereby improving the service life of the nozzle 300 and the stability of the system.

[0052] In this embodiment, the integrated structural design of the base 100 and the multiple hydrogen pipelines 210 and oxygen pipelines 220 ensures uniform gas flow distribution, eliminates the structural complexity caused by multiple sets of independent flow control for multiple nozzles 300, and reduces hardware costs.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A multi-nozzle (300) integrated oxyhydrogen flame burner, characterized in that: The invention comprises a base (100), wherein a first cavity (110) and a second cavity (120) isolated from each other are provided inside the base (100); a plurality of groups of gas supply pipelines (200) are provided on the base (100), a nozzle (300) is installed at the end of each group of gas supply pipelines (200), and the nozzles (300) of the plurality of groups of gas supply pipelines (200) are arranged in an arc-shaped array; each group of gas supply pipelines (200) comprises a hydrogen pipeline ( The first cavity (110) and the second cavity (120) are provided with a first air inlet pipe (400), and the second cavity (120) is provided with a second air inlet pipe (500); one end of the hydrogen pipe (210) is connected to the first cavity (110), and the other end is connected to the nozzle (300); one end of the oxygen pipe (220) is connected to the second cavity (120), and the other end is connected to the nozzle (300); the side wall of the first cavity (110) is provided with a first air inlet pipe (400), and the side wall of the second cavity (120) is provided with a second air inlet pipe (500); A mixing chamber (310) is provided inside the nozzle (300), and the mixing chamber (310) is communicated with a hydrogen pipeline (210) or an oxygen pipeline (220); an independent buffer chamber (320) is provided at the bottom of the mixing chamber (310), and the bottom of the buffer chamber (320) is communicated with the oxygen pipeline (220) or the hydrogen pipeline (210); the top of the buffer chamber (320) is communicated with a plurality of uniformly distributed tubes (330) arranged in an array, and the axial direction of the uniformly distributed tubes (330) is parallel to the axial direction of the nozzle (300).

2. The multi-nozzle (300) integrated oxyhydrogen flame burner according to claim 1, characterized in that: The hydrogen pipeline (210) comprises a hydrogen fixed pipe (211) and a hydrogen movable pipe (212); the hydrogen fixed pipe (211) is rotatably connected to the hydrogen movable pipe (212); one end of the hydrogen fixed pipe (211) away from the hydrogen movable pipe (212) is in communication with the first cavity (110); and one end of the hydrogen movable pipe (212) away from the hydrogen fixed pipe (211) is in communication with the nozzle (300); the oxygen pipeline (220) comprises an oxygen fixed pipe (221) and an oxygen movable pipe (222); the oxygen fixed pipe (221) is rotatably connected to the oxygen movable pipe (222); one end of the oxygen fixed pipe (221) away from the oxygen movable pipe (222) is in communication with the second cavity (120); and one end of the oxygen movable pipe (222) away from the oxygen fixed pipe (221) is in communication with the nozzle (300).

3. The multi-nozzle (300) integrated oxyhydrogen flame burner according to claim 2, characterized in that: The hydrogen fixed tube (211) and the oxygen fixed tube (221) are respectively connected to the corresponding hydrogen movable tube (212) and the oxygen movable tube (222) via a gas-conducting rotary joint (230).

4. The multi-nozzle (300) integrated oxyhydrogen flame burner according to claim 1, characterized in that: A certain distance is left between the top surface of the uniform distribution tube (330) and the nozzle end surface of the nozzle (300).

5. The multi-nozzle (300) integrated oxyhydrogen flame burner according to claim 1, characterized in that: The first air intake pipeline (400) comprises a first air intake main pipe (410) and two first air intake branch pipes (420), one end of each of the two first air intake branch pipes (420) being connected to the first air intake main pipe (410), and the other ends of each of the two first air intake branch pipes (420) being connected to two ends of the first cavity (110); the second air intake pipeline (500) comprises a second air intake main pipe (510) and two second air intake branch pipes (520), one end of each of the two second air intake branch pipes (520) being connected to the second air intake main pipe (510), and the other ends of each of the two second air intake branch pipes (520) being connected to two ends of the second cavity (120).

6. The multi-nozzle (300) integrated oxyhydrogen flame burner according to claim 1, characterized in that: The first air intake pipeline (400) is bypassed by a nitrogen pipeline (240), and a first valve assembly is provided on the nitrogen pipeline (240).

7. The multi-nozzle (300) integrated oxyhydrogen flame burner according to claim 6, characterized in that: A second valve component is disposed in the first air intake pipeline (400), and a third valve component is disposed in the second air intake pipeline (500).

8. The multi-nozzle (300) integrated oxyhydrogen flame burner according to claim 7, characterized in that: The first valve assembly, the second valve assembly and the third valve assembly include one or more of a pressure regulating valve, a manual valve, a pneumatic valve, a ball valve, a one-way valve and a needle valve.

9. The multi-nozzle (300) integrated oxyhydrogen flame burner according to claim 6, characterized in that: The first air intake pipeline (400), the second air intake pipeline (500), and the nitrogen pipeline (240) are provided with one or more of a filter, a pressure gauge, a pressure sensor, a flame arrester, and a mass flow meter.

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