A burner for mixing natural gas and hydrogen

Abstract

The present invention belongs to the technical field of burners, and in particular relates to a burner for mixed combustion of natural gas and hydrogen, comprising a fan, a shell, a fuel nozzle and an igniter, wherein the fuel nozzle is penetrated into the shell, and when the switch is closed, the direction of rotation is controlled to drive the pawl to drive the ratchet to rotate synchronously, so that the ratchet can be controlled to drive the internal rotating disk, and if the switch is turned on and then reversed, the pawl can be controlled to abut against the ratchet without driving the ratchet to rotate, and when the blades are opened, the ratchet will be driven by the thrust of the spring to reset and rotate together with the ratchet, the pawl and the rotating rod, and after the driving spring elastic force disappears, the rotating rod continues to rotate and will not drive the ratchet to rotate, and keeps rotating separately, and if the blades need to adjust the angle separately, switch two controls the motor one to rotate in the same direction as when it is turned on, and the blades can rotate 360 ​​degrees to ensure that the rotating rod only rotates in one direction when switch two is turned on, and the adjustment effect can still be achieved.

Description

Technical Field

[0001] The invention discloses a burner, in particular to a burner for mixed combustion of natural gas and hydrogen. Background Art

[0002] Burners are a general term for devices that spray fuel and air in a certain way to mix and burn. Burners are classified into many categories according to type and application field. Most are made of corrosion-resistant and high-temperature resistant materials such as stainless steel or titanium. In the prior art, burners use a variety of fuels, generally natural gas and air are mixed for combustion, but this method does not burn the natural gas completely and the efficiency is relatively slow. Therefore, it is constantly changing. By mixing hydrogen in natural gas for combustion, the degree and speed of natural gas combustion can be improved, and the stable lean combustion limit of natural gas can be extended. It also saves time and improves efficiency, and has been widely used.

[0003] In the prior art, many burners are used in industrial production, and heat is supplied by continuous heating through the burner. Ceramic kilns bake and shape the internal ceramics through the temperature of the flame ejected by the burner. Ceramic kiln combustion is achieved by direct flame injection. However, to avoid excessive flame on the product, the degree of flame eruption is generally adjusted. The gas is blown to the igniter by the amount of air blown out by the fan. At the same time, the eruption state is changed by adjusting the amount of air. When the igniter turns off the fan and stops the fan, the flame may flow back because the air pressure or the fan gas still has a certain circulation, which may cause overheating and deformation of the burner at the air outlet of the combustion chamber at the ignition point. The prior art generally improves the performance of the material or cools the burner, but the effect of this setting is insufficient, so another solution is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problems and to provide a burner for mixed combustion of natural gas and hydrogen.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a burner for mixed combustion of natural gas and hydrogen, comprising a fan, a shell, a fuel nozzle and an igniter, the fuel nozzle is inserted into the shell, a plurality of blades for guiding gas flow are arranged between the fuel nozzle and the shell, a rotating rod is clamped in the middle of the blade, the two ends of the rotating rod are respectively rotatably connected with the fuel nozzle and the shell, a gear clamped with a plurality of rotating rods is arranged outside the shell, one of the gears is provided with a motor 1 for driving the gear, a set is rotatably connected outside the shell, the set is provided with teeth, and the teeth of the set are meshed with the gears of the driving motor 1, and the teeth of the set are annularly distributed and meshed with all the gears, a blocking piece for blocking fuel output is slidably connected to the fuel nozzle, a pushing component for pushing the blocking piece to move is arranged on the fuel nozzle, and a driving component for driving the pushing component to open is arranged on the rotating rod;

[0006] The pushing assembly comprises a rotating wheel rotatably connected to the fuel nozzle, a rotating disk meshing with the rotating wheel is rotatably connected to the fuel nozzle, the blocking member is provided with a second protrusion embedded in the rotating disk, the rotating disk is provided with a second arc-shaped groove for pushing the second protrusion to move, the upper end of the blocking member is provided with a plug-in embedded in the fuel nozzle, and the fuel nozzle is provided with a guide groove at the upper end of the blocking member for accommodating the plug-in to be embedded and guiding the plug-in to move;

[0007] The driving assembly includes a ratchet arranged in a rotating rod, a pawl abutting against the ratchet is arranged in the rotating rod, a rotating member is clamped on the ratchet, a connecting block is slidably connected in the rotating member, a protrusion embedded in the rotating member is arranged on the connecting block, an arc groove for pushing the protrusion to move upward is arranged in the rotating member, and a slot for accommodating the embedding of the connecting block is arranged on the rotating wheel.

[0008] Preferably, a control panel is provided outside the shell, a switch 1 for controlling the motor 1 to turn on and off is provided on the control panel, a switch 2 for controlling the motor 1 and adjusting the blade angle is provided on the control panel, and a spring 1 for pushing the rotating member and the ratchet to reset is provided inside the rotating member.

[0009] Preferably, a soft sealing strip is provided at the connection between the blade and the shell and the fuel nozzle, and a second spring is provided between the rotating disk and the fuel nozzle to push the rotating disk to reset.

[0010] Preferably, the fuel nozzle is provided with a guide channel for guiding the flow of water, the fuel nozzle is provided with a water outlet connected to the guide channel at the upper end of the blocking member, the blocking member is provided with an adsorption member for adsorbing moisture to reduce the outlet temperature of the fuel nozzle, the blocking member is provided with a water inlet connected to the adsorption member, the water inlet is staggered with the water outlet of the fuel nozzle, and the water outlet is provided with a blocking component for closing the water flow.

[0011] Preferably, the blocking assembly includes a sealing member that is slidably connected to the water outlet, the water outlet is inclined, and the aperture of the water outlet is larger near the blocking member and smaller at the upper end, a spring is provided between the sealing member and the upper end of the water outlet, the bottom and edge of the water inlet are arc-shaped, and the sealing member is also arc-shaped.

[0012] Preferably, a cooling pipe for accommodating the flow of water is provided on the inner wall of the shell and the fuel nozzle, and the cooling pipe is interconnected with the starting point of the guide channel. A solenoid valve for controlling the flow of water into the guide channel and the cooling pipe is provided outside the shell, and a controller for receiving a signal from the motor to drive the blade to close is provided on the solenoid valve.

[0013] Preferably, the connection block is connected to the rotating wheel by magnetic attraction, and the magnetic attraction force between the connection block and the rotating wheel is greater than the meshing force between the rotating wheel and the rotating disk.

[0014] Preferably, the fuel nozzle is provided with a second motor, the control panel is provided with a third switch for controlling the forward and reverse rotation of the second motor, the second motor is clamped with a driving wheel that meshes with the rotating wheel, the driving wheel is slidingly connected to the shaft of the second motor, the second motor is provided with a cylinder that drives the driving wheel to move, and the cylinder is started synchronously with the second motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Firstly, after using this device, natural gas and hydrogen produced by electrolysis of water are gathered and mixed into the fuel nozzle, and then discharged from the fuel nozzle. At the same time, the igniter is energized to make the natural gas and hydrogen burn. At the same time, the fan is turned on to suck in the external gas and blow it out from the shell, so that the flame is ejected into the ceramic kiln to bake the materials in the kiln. When in use, the air flow and wind force are guaranteed by adjusting the angle of the blades to ensure the injection of the flame. Secondly, when closing, the switch is turned on, the motor is turned off and the gear is driven to rotate, and the gear teeth engaged with the gear teeth push the kit to rotate, and the blades are closed at the same time, and the kit is driven The rotation will drive the other gears to rotate at the same time, and drive the rotating rod connected to the gear to rotate together. When the rotating rod rotates, the pawl is embedded in the ratchet wheel, and the ratchet wheel is driven to rotate and drive the connected rotating member to rotate together. The protrusion one is pushed by the arc groove one to drive the connecting block to be embedded in the card groove of the rotating wheel. By continuing to rotate, the rotating wheel can be driven, and the rotating wheel drives the meshing rotating disk to rotate synchronously. When the rotating disk rotates, the internal arc groove two pushes the protrusion two, driving the blocking member to move together to achieve the effect of closing the fuel nozzle. Secondly, the moving path of the blocking member is guaranteed by the action of the guide groove and the plug-in.

[0017] Secondly, motor one can rotate forward and reverse, switch one is the driving switch and the closing switch, and when switch one is closed, the direction of rotation controlled by it will drive the pawl to drive the ratchet to rotate synchronously, and at the same time compress spring one, so as to control the ratchet to drive the internal rotating disk. If switch one is turned on and then reversed, the pawl can be controlled to abut against the ratchet and will not drive the ratchet to rotate. However, when the ratchet is rotated at the beginning, the thrust of spring one will drive the ratchet, the pawl and the rotating rod to reset and rotate together. After the compression force of spring one disappears, the rotating rod continues to rotate and will not drive the ratchet to rotate, and keeps rotating alone. Secondly, if the blades need to adjust the angle separately, switch two controls the motor one to rotate in the same direction as when it is turned on, and the blades can rotate 360 ​​degrees to ensure that the rotating rod only rotates in one direction when switch two is turned on, and the adjustment effect can still be achieved.

[0018] Thirdly, when the ratchet reset connection block is pushed backward by the first protrusion to disengage from the slot, and the rotating disk is pushed back by the second spring after being released from the restriction, and when the blocking member is driven to close, the water inlet on the blocking member will move to be opposite to the water outlet, so that the sealing member will be pushed downward by the spring to be embedded in the water inlet, canceling the closure of the water outlet, and water will enter the water inlet and enter the adsorption member from the water inlet, so as to wet and reduce the temperature at the fuel nozzle, and block the flame backflow. At the same time, the blades are closed before the fan is turned off, and then the temperature is immediately reduced, thereby reducing the problem caused by flame backflow;

[0019] Fourthly, once the motor is turned off, the solenoid valve will be opened synchronously to ensure that water flows out into the diversion channel and the cooling pipe. The cooling pipe can cool the shell and the fuel nozzle at the same time. Conversely, when the motor is turned off, the solenoid valve will be closed immediately to ensure that water will not continue to flow out during ignition. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The schematic diagram of the structure of a burner for mixed combustion of natural gas and hydrogen is shown in FIG.

[0021] Figure 2 A schematic diagram of the internal structure of a burner shell for mixed combustion of natural gas and hydrogen Figure 1 ;

[0022] Figure 3 A schematic diagram of the internal structure of a burner shell for mixed combustion of natural gas and hydrogen Figure 2 ;

[0023] Figure 4 for Figure 3 A local enlarged schematic diagram at point A;

[0024] Figure 5 for Figure 3 A local enlarged schematic diagram at B;

[0025] Figure 6 for Figure 3 A local enlarged schematic diagram at C;

[0026] Figure 7 The present invention is a schematic diagram of the partial structure of a burner shell for mixed combustion of natural gas and hydrogen.

[0027] Reference numerals: 1, fan; 2, housing; 3, fuel nozzle; 4, igniter; 5, blade; 6, rotating rod; 7, gear; 8, motor 1; 9, kit; 10, driving wheel; 11, blocking member; 12, rotating wheel; 13, cylinder 1; 14, rotating disk; 15, protrusion 2; 16, arc groove 2; 17, plug-in; 18, guide groove; 19, ratchet; 20, pawl; 21, rotating member; 22 , connecting block; 23, protrusion one; 24, arc groove one; 25, card slot; 26, control panel; 27, switch one; 28, switch two; 29, spring one; 30, sealing strip; 31, spring two; 32, diversion channel; 33, water outlet; 34, adsorption part; 35, water inlet; 36, sealing part; 37, spring; 38, cooling pipe; 39, solenoid valve; 40, motor two; 41, switch three. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] A burner for mixing natural gas and hydrogen, such as Figure 1-Figure 7As shown, it includes a fan 1, a shell 2, a fuel nozzle 3 and an igniter 4. The fuel nozzle 3 is inserted into the shell 2. A plurality of blades 5 for guiding gas flow are arranged between the fuel nozzle 3 and the shell 2. A rotating rod 6 is clamped in the middle of the blade 5. Both ends of the rotating rod 6 are rotatably connected to the fuel nozzle 3 and the shell 2 respectively. A gear 7 clamped with a plurality of rotating rods 6 is arranged outside the shell 2. One of the gears 7 is provided with a motor 8 for driving the gear 7. A kit 9 ​​is rotatably connected outside the shell 2. The kit 9 ​​is provided with teeth, and the teeth of the kit 9 ​​are meshed with the gear 7 of the driving motor 8, and the teeth of the kit 9 ​​are annularly distributed and meshed with all the gears 7. A blocking member 11 for blocking fuel output is slidably connected to the fuel nozzle 3. A pushing component for pushing the blocking member 11 to move is arranged on the fuel nozzle 3, and a driving component for driving the pushing component to open is arranged on the rotating rod 6. During normal use, the burner is powered by the ignition device after the natural gas pressure is input. The natural gas combustion is turned on and turned by the fan 1 to input the external gas and discharge it from the shell 2, so that the flame erupts, thereby achieving combustion and entering the ceramic kiln to bake the internal products that need to be shaped. If the hydrogen formed after water electrolysis is introduced together and mixed with the natural gas and discharged from the fuel nozzle 3, the natural gas can be burned more fully and faster, thereby reducing some residual substances. In normal use when the fire is turned off, when the burner is turned off, the fan 1 is stopped, and the valve at the rear end of the fuel nozzle 3 is closed, and the fuel output is stopped. However, because the gas is small, the combustion flame gradually moves inward, which can easily cause flame reflux.

[0030] The pushing assembly includes a rotating wheel 12 rotatably connected to the fuel nozzle 3, a rotating disk 14 meshing with the rotating wheel 12 is rotatably connected to the fuel nozzle 3, a protrusion 15 is provided on the blocking member 11 to be embedded in the rotating disk 14, an arc groove 16 is provided on the rotating disk 14 to push the protrusion 15 to move, a plug-in 17 is provided at the upper end of the blocking member 11 to be embedded in the fuel nozzle 3, and a guide groove 18 is provided at the upper end of the blocking member 11 to accommodate the plug-in 17 to be embedded and guide the plug-in 17 to move. A ratchet 20 is provided in the rotating rod 6 to abut against the ratchet 19, a rotating member 21 is clamped on the ratchet 19, a connecting block 22 is slidably connected in the rotating member 21, a protrusion 23 is provided on the connecting block 22 to be embedded in the rotating member 21, an arc groove 24 is provided in the rotating member 21 to push the protrusion 23 to move upward, and a clamping groove 25 is provided on the rotating wheel 12 to accommodate the connecting block 22 to be embedded. After using this device, the normal igniter 4 is ignited and then the motor 8 is reversed, and the switch 28 on the control panel 26 is turned on to adjust the angle of the blade 5 to adjust the air volume and degree of air outlet. On the contrary, when it needs to be closed, the switch 27 is turned on, and the motor 8 is controlled to rotate forward, and the gear 7 is driven to rotate so that the gear 7 with the motor 8 drives the teeth of the set 9 to mesh, so as to achieve the effect of pushing the set 9 to rotate, so that the set 9 drives the other gears 7 without the motor 8 to rotate together, and when it rotates forward, it will drive the pawl 20 in the rotating rod 6 to embed into the tooth gap of the ratchet 19, so that after the rotation, the ratchet 19 can be driven at the same time, and the rotating member 21 can be driven to rotate synchronously, and the internal spring 29 is compressed, so that when the arc groove 24 rotates, the inner wall pushes the protrusion 23 to move upward, and drives The connecting block 22 is synchronously moved and embedded into the rotating wheel 12, and after continuing to rotate, the rotating wheel 12 can be driven to rotate, and the rotating disk 14 is engaged and driven to rotate synchronously, so that the inner wall of the arc groove 2 16 on the rotating disk 14 pushes the protrusion 2 15, so that when the blocking member 11 moves, it drives the plug-in 17 forward along the guide groove 18, and the moving path is limited by the guide groove 18 and the arc groove 2 16 is pushed to ensure that the multi-stem blocking member 11 will close the fuel nozzle 3. Therefore, when it is closed again, the fan 1 switch and the motor 8 close switch 27 are connected synchronously, and then the fuel input is also closed at the same time. At the same time, the blocking member 11 is immediately closed and blocked to reduce the probability of flashback, and the fuel output is cut off first and quickly. The flame of the fan 1 stops and gradually becomes smaller, thereby reducing the probability of flame reflux under multiple effects and reducing internal damage.

[0031] A control panel 26 is provided outside the housing 2. A switch 27 for controlling the motor 8 to turn on and off is provided on the control panel 26. A switch 28 for controlling the motor 8 and adjusting the angle of the blade 5 is provided on the control panel 26. A spring 29 for pushing the rotating member 21 and the ratchet 19 to reset is provided inside the rotating member 21. The motor 8 can rotate forward or reverse, and the rotation angle of the motor 8 can be controlled when the switch 28 is turned on. A soft sealing strip 30 is provided at the connection between the blade 5 and the housing 2 and the fuel nozzle 3. A spring 2 31 for pushing the rotating disk 14 to reset is provided between the rotating disk 14 and the fuel nozzle 3. The sealing strip 30 can ensure that the blade 5 has a certain arc shape, and the sealing strip 30 can be compressed to a certain extent when rotating, and will not have an obstructive effect. Secondly, a highly elastic and heat-resistant material is also used. At the same time, no adsorption member 34 is provided on the path where the internal blocking member 11 fits the water outlet 33, so as to ensure that the adsorption member 34 will not absorb water after the misalignment setting.

[0032] The fuel nozzle 3 is provided with a guide channel 32 for guiding the flow of water. The fuel nozzle 3 is provided with a water outlet 33 connected to the guide channel 32 at the upper end of the blocking member 11. The blocking member 11 is provided with an adsorption member 34 for adsorbing moisture to reduce the outlet temperature of the fuel nozzle 3. The blocking member 11 is provided with a water inlet 35 connected to the adsorption member 34. The water inlet 35 and the water outlet 33 of the fuel nozzle 3 are staggered, and a blocking component for closing the water flow is provided at the water outlet 33. At the same time, when the motor 8 rotates forward and drives the rotating disk 14 to push the blocking member 11, the solenoid valve 39 will open synchronously and water will flow into the diversion channel 32. When the blocking member 11 moves, the water inlet 35 will move to the water outlet 33, so that the water outlet 33 is opposite to the water inlet 35, and the sealing member 36 in the water outlet 33 is separated from the uppermost blockage of the blocking member 11 at the same time. The sealing member 36 is pushed by the spring 37 to be embedded in the water inlet 35, and the aperture of the water inlet 35 is larger than the aperture of the lower end of the water outlet 33. After the sealing member 36 moves downward, the water flow will enter the water inlet 35 and then be adsorbed by the adsorption member 34, ensuring that the blocking member 11 is wetted on both sides when closed, ensuring that the blocking member 11 closes and seals the fuel nozzle 3, and reduces the temperature. The effect of reducing the temperature reflux through cooling, the flame reflux is further reduced after this arrangement, and finally, the electrical devices such as the motor 1 8 and the motor 2 40 are coated with a high-strength heat-resistant layer.

[0033] The blocking assembly includes a sealing member 36 that is slidably connected to the water outlet 33. The water outlet 33 is inclined, and the aperture of the water outlet 33 is larger near the blocking member 11 and smaller at the upper end. A spring 37 is provided between the sealing member 36 and the upper end of the water outlet 33. The bottom and edge of the water inlet 35 are arc-shaped, and the sealing member 36 is also arc-shaped. On the contrary, when the motor 8 is driven and the control blade 5 is opened, the blocking member 11 will also open and when the blocking member 11 is opened, the water inlet 35 will abut against the sealing member 36, pushing the sealing member 36 upward along the arc surface and compressing the spring 37, so as to ensure that the sealing member 36 is re-attached to the inner wall of the water outlet 33, and the water outlet 33 is closed to ensure that no water will flow out when the fuel nozzle 3 continues to spray fuel. A cooling pipe 38 for accommodating the flow of water is provided on the inner wall of the shell 2 and the fuel nozzle 3, and the cooling pipe 38 is connected to the starting point of the guide channel 32. An electromagnetic valve 39 for controlling the water flow into the guide channel 32 and the cooling pipe 38 is provided outside the shell 2, and a controller for receiving a signal from the motor 8 to drive the blade 5 to close is provided on the electromagnetic valve 39. At the same time, after the solenoid valve 39 is opened, the water flow used for cooling will also enter the cooling pipe 38, so as to reduce the temperature of the shell 2 and the fuel nozzle 3. At the same time, when the switch 27 of the motor 8 is turned on and the blade 5 is closed, a signal will be output to the controller synchronously to control the opening of the solenoid valve 39, so as to achieve the effect of water discharge and ensure the cooling effect of the fuel nozzle 3 and the shell 2. The connection between the solenoid valve 39 switch and the motor 8 switch 27 is a prior art and will not be discussed in detail here.

[0034] The connection block 22 is connected to the rotating wheel 12 by magnetic attraction. When the connection block 22 is embedded in the rotating wheel 12, the magnetic attraction connection is large, so that when the connection block 22 is driven to rotate, the rotating wheel 12 will be driven to rotate together. The magnetic attraction force between the connection block 22 and the rotating wheel 12 is greater than the meshing force between the rotating wheel 12 and the rotating disk 14, which can ensure that the connection block 22 drives the rotating wheel 12 to rotate, and the meshing force will not cause the connection block 22 and the rotating wheel 12 to rotate relative to each other. The fuel nozzle 3 is provided with a motor 2 40, and the control panel 26 is provided with a switch 3 41 for controlling the forward and reverse rotation of the motor 2 40. The motor 2 40 is clamped with a driving wheel 10 meshing with the rotating wheel 12. The driving wheel 10 is slidably connected to the shaft of the motor 2 40. The motor 2 40 is provided with a cylinder 13 for driving the driving wheel 10 to move, and the cylinder 13 and the motor 2 40 are started synchronously. Secondly, by turning on switch three 41 of the control panel 26, the cylinder one 13 and the motor two 40 can be controlled to turn on at the same time, and a delay device is provided in the motor two 40, which will delay for a few seconds before rotating after being turned on, and the delay time is the time when the cylinder one 13 pushes the driving wheel 10 to move and engage with the rotating wheel 12, so as to ensure that the cylinder one 13 is turned on first and the driving wheel 10 is engaged with the rotating wheel 12, and then the motor two 40 rotates, and drives the driving wheel 10 to drive the engaged rotating wheel 12 to rotate, so that the rotating wheel 12 can control the rotating disk 14 to rotate and drive the blocking member 11 to close. Under this setting, if the operator does not use switch one 27 to close, the switch of the motor two 40 can be driven alone to close. Secondly, the solenoid valve 39 is also provided with a separately driven switch.

[0035] After the above arrangement, in normal use, the angle of the blade 5 can be controlled by turning on the switch 28. At the same time, the control panel 26 is provided with a scale that rotates synchronously with the blade 5, so that the angle of the blade 5 can be intuitively seen and convenient for the switch 28 to adjust. Secondly, when the burner needs to be turned off, the switch 1 27 is turned on to drive the gear 7 to rotate forward, and the teeth of the kit 9 ​​are pushed to engage, so as to synchronously drive multiple gears 7 to rotate together, drive the rotating rod 6 to rotate synchronously, drive the pawl 20 to embed into the tooth gap of the ratchet 19, push the ratchet 19 to rotate together, drive the rotating member 21 to rotate synchronously, and the arc groove 1 24 of the rotating member 21 rotates the inner wall to push the protrusion 1 23 upward and forward, synchronously drive the connecting block 22 to move and embed into the slot 25 of the rotating wheel 12 through magnetic attraction connection, thereby rotating and driving the rotating wheel 12 to drive the rotating disk 14 to rotate, and the protrusion 2 15 is also pushed and moved through the inner wall of the arc groove 2 16 to drive multiple blocking members 11 to move and close the fuel nozzle 3, and the solenoid valve 39 is synchronously opened and opened to accommodate the water flow to enter the diversion channel 3 2 and the cooling pipe 38, so as to cool the fuel nozzle 3 and the shell 2 and reduce the surrounding temperature when preparing to close. Secondly, after the blocking member 11 moves, the water inlet 35 and the water outlet 33 are relative to each other. At this time, the water flow enters the water inlet 35 to wet the adsorption member 34. After this arrangement, when the burner needs to be turned off, the fan 1 stops and the blades 5 are automatically closed, which will drive the internal blocking member 11 to move, and simultaneously cut off the fuel nozzle 3, so as to avoid the situation where the internal residue is still there when the fuel stops being input and the blocking member 11 can immediately cut off the internal residual fuel and continue to output. After cutting off, cooling water enters and the adsorption member 34 is wetted, so as to close and reduce the temperature of the flame at the outlet of the fuel nozzle 3, thereby reducing the temperature and reducing the reflux of the residual flame. The simultaneous operation can reduce the flame combustion reflux. Through this arrangement, a semi-automatic effect is achieved. By opening and closing, multiple steps can be automatically and synchronously performed to reduce the probability of damage to some internal devices and other items due to flame reflux.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A burner for mixed combustion of natural gas and hydrogen, comprising a fan (1), a housing (2), a fuel nozzle (3) and an igniter (4), wherein the fuel nozzle (3) is inserted into the housing (2), and is characterized in that: A plurality of blades (5) for guiding gas flow are provided between the fuel nozzle (3) and the housing (2), a rotating rod (6) is clamped in the middle of the blade (5), and the two ends of the rotating rod (6) are respectively rotatably connected to the fuel nozzle (3) and the housing (2), and a gear (7) clamped to the plurality of rotating rods (6) is provided outside the housing (2), and one of the gears (7) is provided with a motor (8) for driving the gear (7), and a set (9) is rotatably connected outside the housing (2), and the set (9) is provided with teeth, and the teeth of the set (9) mesh with the gear (7) of the driving motor (8), and the teeth of the set (9) are annularly distributed and mesh with all the gears (7), and a blocking member (11) for blocking fuel output is slidably connected to the fuel nozzle (3), and a pushing component for pushing the blocking member (11) to move is provided on the fuel nozzle (3), and a driving component for driving the pushing component to open is provided on the rotating rod (6); The pushing assembly comprises a rotating wheel (12) rotatably connected to the fuel nozzle (3); a rotating disk (14) rotatably connected to the fuel nozzle (3) and meshing with the rotating wheel (12); a second protrusion (15) embedded in the rotating disk (14) is provided on the blocking member (11); a second arc-shaped groove (16) for pushing the second protrusion (15) to move is provided on the rotating disk (14); a plug-in (17) embedded in the fuel nozzle (3) is provided at the upper end of the blocking member (11); and a guide groove (18) for accommodating the plug-in (17) to be embedded and guiding the plug-in (17) to move is provided at the upper end of the blocking member (11); The driving assembly comprises a ratchet (19) arranged in a rotating rod (6), a ratchet pawl (20) abutting against the ratchet (19) being arranged in the rotating rod (6), a rotating member (21) being clamped on the ratchet (19), a connecting block (22) being slidably connected in the rotating member (21), a protrusion (23) being arranged on the connecting block (22) for embedding into the rotating member (21), an arc-shaped groove (24) for pushing the protrusion (23) to move upward being arranged in the rotating member (21), and a clamping groove (25) for accommodating the embedding of the connecting block (22) being arranged on the rotating wheel (12); The connection block (22) and the rotating wheel (12) are connected via magnetic attraction, and the magnetic attraction force between the connection block (22) and the rotating wheel (12) is greater than the meshing force between the rotating wheel (12) and the rotating disk (14).

2. A burner for mixed combustion of natural gas and hydrogen according to claim 1, characterized in that: A control panel (26) is provided outside the housing (2), and a switch (27) for controlling the first motor (8) to be turned on and off is provided on the control panel (26). A switch (28) for controlling the first motor (8) and adjusting the angle of the blade (5) is provided on the control panel (26), and a spring (29) for pushing the first motor (21) and the ratchet (19) to reset is provided inside the rotating member (21).

3. A burner for mixed combustion of natural gas and hydrogen according to claim 1, characterized in that: A soft sealing strip (30) is provided at the connection between the blade (5) and the housing (2) and the fuel nozzle (3), and a spring (31) for pushing the rotating disk (14) to reset is provided between the rotating disk (14) and the fuel nozzle (3).

4. A burner for mixed combustion of natural gas and hydrogen according to claim 1, characterized in that: The fuel nozzle (3) is provided with a guide channel (32) for guiding the flow of water; the fuel nozzle (3) is provided with a water outlet (33) at the upper end of the blocking member (11) and connected to the guide channel (32); the blocking member (11) is provided with an adsorption member (34) for adsorbing water to reduce the outlet temperature of the fuel nozzle (3); the blocking member (11) is provided with a water inlet (35) connected to the adsorption member (34); the water inlet (35) is staggered with the water outlet (33) of the fuel nozzle (3); and the water outlet (33) is provided with a blocking component for closing the water flow.

5. A burner for mixed combustion of natural gas and hydrogen according to claim 4, characterized in that: The blocking assembly comprises a sealing member (36) slidably connected to the water outlet (33); the water outlet (33) is arranged obliquely, and the aperture of the water outlet (33) is large near the blocking member (11) and small at the upper end; a spring (37) is arranged between the sealing member (36) and the upper end of the water outlet (33); the bottom and edge of the water inlet (35) are arranged in an arc shape, and the sealing member (36) is also arranged in an arc shape.

6. A burner for mixed combustion of natural gas and hydrogen according to claim 4, characterized in that: A cooling pipe (38) for accommodating water flow is provided on the inner wall of the shell (2) and the fuel nozzle (3), and the cooling pipe (38) is connected to the starting point of the guide channel (32). An electromagnetic valve (39) for controlling water flow entering the guide channel (32) and the cooling pipe (38) is provided outside the shell (2), and a controller for receiving a signal from the motor 1 (8) to drive the blade (5) to close is provided on the electromagnetic valve (39).

7. A burner for mixed combustion of natural gas and hydrogen according to claim 2, characterized in that: The fuel nozzle (3) is provided with a second motor (40), the control panel (26) is provided with a third switch (41) for controlling the forward and reverse rotation of the second motor (40), the second motor (40) is clamped with a driving wheel (10) meshing with a rotating wheel (12), the driving wheel (10) is slidably connected to the shaft of the second motor (40), the second motor (40) is provided with a first cylinder (13) for driving the driving wheel (10) to move, and the first cylinder (13) and the second motor (40) are started synchronously.

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