Combustion-supporting air injection burner

Abstract

The utility model discloses an injection combustion-supporting air burner. The injection combustion-supporting air burner comprises an injection assembly, a combustion-supporting assembly and a welding four-way pipe, the injection assembly is installed in a pipeline of the welded four-way pipe. The combustion-supporting assembly is installed on a pipeline of the welded four-way pipe. The mode that fuel gas is injected into the injection pipe at a high speed is adopted, surrounding air is brought into the injection pipe, mixed gas of the air and natural gas is formed on the end face of the injection pipe, a combustion fan is not needed to provide the air into the burner, and operation of the burner can be conveniently completed in a manual ignition mode under the condition of power failure. A high-energy ignition electrode is used in the injection assembly, and ignition can be achieved under the condition that water is accumulated in the combustor. In addition, a flame stabilizing device is further arranged in the injection assembly, and the problem of flame blow-off of the ignition burner caused when the negative pressure of the hearth is large is solved.

Description

Technical Field

[0001] The utility model relates to the field of industrial burners, in particular to an induced combustion-supporting air burner. Background Art

[0002] In the prior art, commonly used burners require gas and combustion air, and the combustion air is generally provided by a fan. If there is a power outage, the fan cannot work, causing the burner to be unable to operate normally. Power outages often occur in the work of natural gas collection well stations, which will prevent commonly used burners from burning, resulting in slow collection progress. Utility Model Content

[0003] The utility model aims to provide an ejection-assisted combustion air burner, which adopts the method of high-speed fuel gas injection into an ejection pipe to inhale surrounding air to participate in combustion, thereby eliminating the need for a combustion-assisted air fan and improving production efficiency.

[0004] In order to solve the above technical problems, the utility model provides an ejection combustion-supporting air burner, comprising an ejection assembly, a combustion-supporting assembly and a welded four-way pipe;

[0005] The ejector assembly is installed in the pipe of the welded four-way pipe;

[0006] The combustion-supporting assembly is installed on the pipe of the welded four-way pipe.

[0007] Furthermore, the ejection assembly includes an ignition burner, a main fire burner and a burner end plate; the ignition burner and the main fire burner are installed on the burner end plate and inserted into the welded four-way pipe; the burner end plate is installed at a pipe opening in the first direction of the welded four-way pipe.

[0008] Furthermore, the ignition burner includes an ignition ejector nozzle, an ignition ejector tube, an ignition burner high-energy ignition electrode and a nozzle flame stabilizing device; the ignition ejector tube is installed on the burner end plate and inserted into the pipe of the welded four-way pipe, the ignition ejector nozzle is installed near the bifurcation at one end of the burner end plate, and the nozzle flame stabilizing device is installed at the other end; the ignition burner high-energy ignition electrode is installed in the ignition ejector tube.

[0009] Furthermore, the main fire burner includes a main fire nozzle, an ejector tube, a main fire air regulating plate, an ignition flame stabilizing device and a main fire flame protection tube; the main fire nozzle is installed on the burner end plate, is coaxial with the ejector tube, and is connected to one end of the ejector tube; the ejector tube is installed in the welding four-way pipe and is parallel to the ignition ejector tube; the ignition flame stabilizing device is installed at the other end of the ejector tube; the main fire flame protection tube is installed on the ignition flame stabilizing device; the main fire air regulating plate is installed on the main fire nozzle and close to one end of the ejector tube.

[0010] Furthermore, a burner end plate inspection hole is installed on the burner end plate.

[0011] Furthermore, the combustion-supporting assembly includes a combustion-supporting air regulating plate and a purge air interface; the combustion-supporting air regulating plate is installed at two pipe openings in the second direction of the welding four-way pipe; the purge air interface is insertedly installed on the welding four-way pipe and is located at another pipe opening in the first direction.

[0012] Furthermore, it also includes a fire-blocking net, a mounting flange and a differential pressure transmitter pressure measuring hole; the fire-blocking net is installed in the pipeline in the second direction of the welding four-way pipe and is close to the combustion air damper plate; the mounting flange is installed at another pipe opening in the first direction of the welding four-way pipe; the differential pressure transmitter pressure measuring hole is installed on the welding four-way pipe and is located above the purge air interface.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] The device adopts a method of high-speed gas injection into the ejector tube to bring the surrounding air into the ejector tube, forming a mixed gas of air and natural gas at the end face of the ejector tube, eliminating the need for a combustion-supporting fan to provide air to the burner, and also facilitating the operation of the burner by manual ignition in the event of a power outage; the ignition burner uses a high-energy ignition electrode, and ignition can be achieved even when water accumulates inside the burner; in addition, the ejector assembly is also provided with a flame stabilizing device to solve the problem of ignition burner de-ignition caused by a large negative pressure in the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an induced combustion air burner in one embodiment of the utility model;

[0016] Figure 2 It is a structural AA cross-sectional view of an induced combustion air burner in one embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the main view of the induced combustion air burner in one embodiment of the utility model;

[0018] Figure 4 BB cross-sectional view of the induced combustion air burner in one embodiment of the utility model.

[0019] Figure numbers: 1. Welded four-way pipe; 2. Burner end plate; 3. Burner end plate inspection hole; 4. Ignition ejector nozzle; 5. Ignition ejector tube; 6. Ignition burner high-energy ignition electrode; 7. Nozzle flame stabilizing device; 8. Main fire nozzle; 9. Ejector tube; 10. Main fire air regulating plate; 11. Ignition flame stabilizing device; 12. Main fire flame protection tube; 13. Ejector tube end face; 14. Combustion air air regulating plate; 15. Purge air interface; 16. Flame arrester net; 17. Mounting flange; 18. Pressure measuring hole of differential pressure transmitter. DETAILED DESCRIPTION

[0020] The following is a more detailed description of an induced combustion air burner of the utility model in conjunction with a schematic diagram, wherein a preferred embodiment of the utility model is shown. It should be understood that those skilled in the art can modify the utility model described herein and still achieve the beneficial effects of the utility model. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the utility model.

[0021] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0022] like Figures 1 to 4 As shown, the embodiment of the utility model provides an induced combustion air burner, comprising an induced combustion air burner assembly, a combustion air burner assembly and a welded four-way pipe 1;

[0023] The ejection assembly is inserted into the pipe of the welding four-way pipe 1; and the combustion-supporting assembly is installed on the pipe of the welding four-way pipe 1.

[0024] Specifically, in this embodiment, the ejection assembly includes an ignition burner, a main fire burner and a burner end plate 2; the ignition burner and the main fire burner are installed on the burner end plate 2 and inserted into the pipe of the welded four-way pipe 1; the burner end plate 2 is installed at the pipe mouth of the welded four-way pipe 1 in the first direction, and the figure shows the state when the burner end plate 2 and the welded four-way pipe 1 are not fixed.

[0025] In this embodiment, the ignition burner includes an ignition ejector nozzle 4, an ignition ejector tube 5, an ignition burner high-energy ignition electrode 6 and a nozzle flame stabilizing device 7; the ignition ejector tube 5 is installed on the burner end plate 2 and passes through the pipe of the welded four-way pipe 1, the ignition ejector nozzle 4 is installed near the bifurcation at one end of the burner end plate 2, and the nozzle flame stabilizing device 7 is installed at the other end; the ignition burner high-energy ignition electrode 6 is installed in the ignition ejector tube 5, which can realize ignition even when the water content of natural gas is high, so that the burner can operate normally. The ignition burner is connected to the burner end plate 2 by a bolt-locking installation method, and the depth of the ignition burner inserted into the welded four-way pipe 1 can be adjusted so that the ignition ejector nozzle 4 is in a suitable position to ensure the ignition success rate of the ignition burner.

[0026] In this embodiment, the main fire burner includes a main fire nozzle 8, an ejector tube 9, a main fire air regulating plate 10, an ignition flame stabilization device 11 and a main fire flame protection tube 12. The main fire nozzle 8 is installed on the burner end plate 2, coaxial with the ejector tube 9, and threadedly connected to the ejector tube end face 13 at one end of the ejector tube 9, and the nozzle is located at the ejector tube end face 13 to achieve the main fire nozzle 8 to inhale surrounding air when the gas is ejected; in addition, the position of the main fire nozzle 8 is adjustable, and the distance between the main fire nozzle 8 and the ejector tube end face 13 can be appropriately adjusted in actual use to achieve the best ejection effect; it is also convenient to make the mixed gas burn normally by manual ignition in the case of power outage. The ejector tube 9 is installed in the welding four-way pipe 1 and is parallel to the ignition ejector tube 5; the ignition flame stabilization device 11 is installed at the other end of the ejector tube 9, and the main fire burner can also operate stably when the negative pressure in the furnace is large; the main fire flame protection tube 12 is installed on the ignition flame stabilization device 11, which is used to prevent the flame from causing damage to surrounding objects and ensure the stability of the flame during combustion; the main fire air regulating plate 10 is installed on the main fire nozzle 8 and close to the ejector tube end face 13 at one end of the ejector tube 9, which can appropriately adjust the air content injected into the main fire burner to ensure the combustion effect.

[0027] In this embodiment, a burner end plate inspection hole 3 is installed on the burner end plate 2 to facilitate inspection and maintenance so that the burner can operate normally.

[0028] In this embodiment, the combustion-supporting assembly includes a combustion-supporting air regulating plate 14 and a purge air interface 15; the combustion-supporting air regulating plate 14 is installed at two pipe openings in the second direction of the welding four-way pipe 1 by bolts, and is used to control the content of air inhaled by the burner to participate in combustion; the purge air interface 15 is insertedly installed on the welding four-way pipe 1 and is located at another pipe opening in the first direction, which is convenient for purging the furnace when starting and stopping the furnace.

[0029] In this embodiment, the welding four-way pipe 1 is used to install a burner and allow the required inhaled air to enter from the air inlet in the second direction of the welding four-way pipe 1 to ensure the uniformity of the inhaled air.

[0030] In this embodiment, the device also includes a flame-blocking net 16, a mounting flange 17 and a differential pressure transmitter pressure measuring hole 18; the flame-blocking net 16 is installed in the pipeline in the second direction of the welding four-way pipe 1, and is close to the combustion air damper plate 14, for ensuring the safety around the burner when the furnace pressure fluctuates greatly; the mounting flange 17 is installed at another pipe opening in the first direction of the welding four-way pipe 1, which is convenient for the installation of the ejector tube 9 and the ignition ejector tube 5; the differential pressure transmitter pressure measuring hole 18 is installed on the welding four-way pipe 1, and is located above the purge air interface 15, so as to facilitate the measurement of the pressure changes in the burner.

[0031] The working principle of the utility model is to introduce the high-speed jet of natural gas into the ejector tube 9, and the injected natural gas collides with the surrounding injected gas (air) particles to exchange momentum, driving the air particles to move forward. The ejector tube 9 is a cylinder with a limited diameter. When the gas in front is pushed forward, the gas behind will become rarefied, causing the pressure to drop, that is, a certain negative pressure (suction) is created at the ejector tube end face 13, thereby ejecting the surrounding air, and then forming a mixed gas of air and natural gas at the ignition and flame stabilization device 11. The high-energy ignition electrode 6 of the ignition burner is ignited to ignite the mixed gas at the ignition and flame stabilization device, thereby forming a stable flame to supply heat to the equipment.

[0032] To sum up, the ejector air combustion burner proposed in this embodiment adopts the method of high-speed fuel gas injection into the ejector tube to bring the surrounding air into the ejector tube, forming a mixed gas of air and natural gas at the end face of the ejector tube, eliminating the need for a combustion-supporting fan to provide air to the burner, and also facilitating the operation of the burner by manual ignition in the event of a power outage; a high-energy ignition electrode is used in the ejector assembly, so ignition can be achieved even when water accumulates inside the burner; in addition, a flame stabilizing device is also provided in the ejector assembly to solve the problem of ignition burner de-ignition caused by a large negative pressure in the furnace.

[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An induced combustion air burner, characterized in that: It includes an ejector assembly, a combustion-supporting assembly and a welded four-way pipe; The ejector assembly is installed in the pipe of the welded four-way pipe; the combustion-supporting assembly is installed on the pipe of the welded four-way pipe; Wherein, the ejection assembly comprises an ignition burner, a main fire burner and a burner end plate; the ignition burner and the main fire burner are mounted on the burner end plate and inserted into the welded four-way pipe; the burner end plate is mounted at a pipe opening in a first direction of the welded four-way pipe; The ignition burner comprises an ignition ejector nozzle, an ignition ejector tube, an ignition burner high-energy ignition electrode and a nozzle flame stabilizing device; the ignition ejector tube is installed on the burner end plate and inserted into the pipe of the welded four-way pipe, the ignition ejector nozzle is installed near the bifurcation at one end of the burner end plate, and the nozzle flame stabilizing device is installed at the other end; the ignition burner high-energy ignition electrode is installed in the ignition ejector tube; The main fire burner includes a main fire nozzle, an ejector tube, a main fire air regulating plate, an ignition flame stabilizing device and a main fire flame protection tube; the main fire nozzle is installed on the burner end plate, is coaxial with the ejector tube, and is connected to one end of the ejector tube; the ejector tube is installed in the welding four-way pipe and is parallel to the ignition ejector tube; the ignition flame stabilizing device is installed at the other end of the ejector tube; the main fire flame protection tube is installed on the ignition flame stabilizing device; the main fire air regulating plate is installed on the main fire nozzle and close to one end of the ejector tube.

2. The induced combustion air burner according to claim 1, characterized in that: A burner end plate inspection hole is installed on the burner end plate.

3. The induced combustion air burner according to claim 1, characterized in that: The combustion-supporting assembly includes a combustion-supporting air regulating plate and a purge air interface; the combustion-supporting air regulating plate is installed at two pipe openings in the second direction of the welding four-way pipe; the purge air interface is insertedly installed on the welding four-way pipe and is located at another pipe opening in the first direction.

4. The induced combustion air burner according to claim 1, characterized in that: It also includes a fire-blocking net, a mounting flange and a differential pressure transmitter pressure measuring hole; the fire-blocking net is installed in the pipeline in the second direction of the welding four-way pipe and is close to the combustion air damper plate; the mounting flange is installed at another pipe opening in the first direction of the welding four-way pipe; the differential pressure transmitter pressure measuring hole is installed on the welding four-way pipe and is located above the purge air interface.

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