Energy-saving ammonia-hydrogen mixed gas burner

Abstract

The invention discloses an energy-saving ammonia-hydrogen mixed gas burner, and relates to the technical field of burners. The device comprises an air injection disc, a switching disc, a gear ring disc, a spiral preheating pipe and a mixed flow channel. According to the burner, the multiple nozzles with different diameters are arranged, the pneumatic impeller drives the gear set to achieve automatic switching of the nozzles, the electric valve and the friction locking structure are combined, and the accuracy and safety of switching of the nozzles are guaranteed. And the spiral preheating pipe preheats ammonia gas and hydrogen gas by utilizing combustion waste heat, so that the combustion efficiency of fuel gas is improved. The ammonia-hydrogen proportion and the injection flow are controlled through the electric valve, and the combustion mode can be flexibly adjusted. Reutilization of fuel gas flow kinetic energy, self-adaptive adjustment of the nozzle and efficient combustion of fuel gas are achieved, and the nozzle is suitable for an energy supply system of an energy-saving generator and a generator set.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of burners, in particular to an energy-saving ammonia-hydrogen mixed gas burner. BACKGROUND

[0002] In the existing gas burner technology, the common fuels are natural gas, liquefied petroleum gas or single hydrogen, ammonia. The burners mostly adopt fixed nozzle design, the nozzle diameter and the jet direction are fixed, and the jet state cannot be flexibly switched according to the fuel characteristics. Due to the single nozzle, the combustion efficiency is limited, and under different gas ratios, incomplete combustion or unstable flame is prone to occur. At the same time, the existing burners often lack an efficient preheating link, resulting in low temperature of the gas before ignition, slow flame propagation rate, insufficient combustion efficiency, and large heat energy loss. These shortcomings make it difficult for the burner to achieve efficient and low-energy operation when used for ammonia-hydrogen mixed gas energy supply. SUMMARY

[0003] In order to overcome the defects of the prior art, the present application provides the following technical scheme: an energy-saving ammonia-hydrogen mixed gas burner, comprising a jet disc, a switching disc is rotatably installed on the jet disc, the switching disc and the contact surface of the jet disc are rotatably sealed and fitted, a tooth ring disc is rotatably installed on the side of the jet disc away from the switching disc, and the tooth ring disc and the switching disc are coaxially fixed through a rotating shaft; a feed inlet is arranged at the edge position of the jet disc, a plurality of nozzles are arranged in a circular array on the upper surface of the switching disc, and each nozzle can be concentrically aligned with the feed inlet; a mixed gas pipeline is fixedly connected to the feed inlet, and the mixed gas pipeline is fixedly connected to a mixed flow channel; wherein two spiral preheating pipes are arranged above the jet disc, one end of each of the two spiral preheating pipes is connected to an ammonia gas supply pipeline and a hydrogen gas supply pipeline, and the other end of each of the two spiral preheating pipes is communicated with the inside of the mixed flow channel through two feed pipes.

[0004] Preferably, the diameters of each nozzle are different; wherein a resistance adjusting threaded frame is coaxially fixed and installed on the jet disc by means of threads, and the resistance adjusting threaded frame is used for rotating and embedding the switching disc on the jet disc.

[0005] Preferably, a third electric valve is connected in series in the middle of each of the two feed pipes, and the third electric valve is used for adjusting the flow of the gas fuel in the spiral preheating pipe.

[0006] Preferably, the circumferential surface of the air jet disc is fixedly provided with a gas leakage ring, the gas leakage ring is fixedly connected with a driving shunt pipeline through a gas leakage connector, one end of the driving shunt pipeline away from the gas leakage connector is fixedly connected with the mixed gas pipeline, and a second electric valve is arranged in the middle of the driving shunt pipeline, and the second electric valve is used for adjusting the flow of gas fuel in the driving shunt pipeline; a ring plate is coaxially fixedly arranged on the gas leakage ring, and a plurality of gas leakage openings are arranged in the circular array of the ring plate.

[0007] Preferably, one of the middle sections of the driving shunt pipeline is coaxially matched with the air jet disc, and an impeller is rotationally arranged in the middle of the driving shunt pipeline, a center shaft is fixedly arranged at the axial position of the impeller, one end of the center shaft penetrates to the outside of the driving shunt pipeline, and the center shaft is rotationally and sealingly matched with the driving shunt pipeline.

[0008] Preferably, the outer part of the tooth ring disc is sleeved with a tooth ring disc support shell, the tooth ring disc support shell is fixedly arranged on the lower surface of the air jet disc, a driving gear is rotationally matched with the axial position of the inner side of the tooth ring disc, the driving gear and the tooth ring disc are meshingly and drivingly connected through a plurality of power switching gears, all the power switching gears are rotationally arranged on a switching gear mounting disc coaxial with the tooth ring disc, and the switching gear mounting disc is rotationally arranged on the inner side of the tooth ring disc support shell.

[0009] Preferably, one end of the center shaft away from the impeller penetrates the tooth ring disc support shell and the switching gear mounting disc in sequence and is fixedly connected with the driving gear, and the center shaft is rotationally matched with the tooth ring disc support shell and the switching gear mounting disc.

[0010] Preferably, the lower surface of the tooth ring disc support shell is fixedly connected with an extrusion piston cavity, an extrusion piston block is slidingly and sealingly arranged on the inner wall of the extrusion piston cavity, the inside of the extrusion piston cavity is connected with the mixed gas pipeline through an extrusion guide pipe, the middle of the extrusion guide pipe is connected with a first electric valve in series, the radial position of the tooth ring disc support shell is provided with a constant pressure channel connected with the extrusion piston cavity, and the constant pressure channel is used for connecting the extrusion piston cavity with the outside atmosphere. The extrusion piston cavity is divided into two parts by the extrusion piston block, one part contains a return spring, the space containing the return spring is connected with the extrusion guide pipe, and the other part faces the switching gear mounting disc and is connected with the constant pressure channel. The space is used for exhausting gas, so that pressure difference is generated on both sides of the extrusion piston block.

[0011] Preferably, a return spring is elastically arranged between the extrusion piston block and the inner wall bottom surface of the extrusion piston cavity, both ends of the return spring are fixedly connected with the extrusion piston block and the extrusion piston cavity, and the return spring is used for driving the extrusion piston block to move towards the direction away from the switching gear mounting disc.

[0012] Preferably, the mixed flow channel is fixedly installed on the base, and the heat uniformizing cover is fixedly installed on the base and sleeved outside the spiral preheating pipe.

[0013] Compared with the prior art, the present application has the following advantages: (1) The present application can flexibly switch the shape and flow of the jet gas flow according to the needs by setting the sealing rotation cooperation between the switching disc and the jet disc and designing multiple nozzles with different diameters on the switching disc, so as to realize the rapid adjustment of the combustion mode. Compared with the existing fixed nozzle burner, the design can adapt to the ammonia-hydrogen mixed gas ratio under different working conditions, improve the combustion stability and adaptability; (2) The present application is provided with two spiral preheating pipes around the top of the jet disc, which preheat the ammonia and hydrogen by using the heat generated during the combustion process. By preheating to improve the activation degree of the fuel, the gas has higher reactivity before entering the mixed flow channel, so as to effectively improve the combustion efficiency, reduce the ignition delay, reduce the fuel waste, and significantly save energy; (3) The present application controls the interlocking of the first electric valve and the second electric valve, so that the gas pressure can act on the extrusion piston cavity to push the extrusion piston block to realize friction locking, so as to selectively transmit power to the gear ring disc or the switching gear mounting disc. The structure ensures the stability and accuracy of the nozzle switching process, avoids the combustion abnormality caused by incomplete switching in the prior art, and significantly improves the safety; (4) The present application is provided with an impeller in the driving shunt pipeline, and the impeller is rotated by the gas flow to convert the flow energy into mechanical power, which is then transmitted to the switching disc through the gear set to realize the automatic switching of the nozzle. The flow energy of the gas itself is effectively used as the driving power to avoid the energy consumption of the additional power source. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0015] Figure 2 It is a schematic diagram of the mixed flow channel structure of the present application.

[0016] Figure 3 It is a schematic diagram of the driving shunt pipeline structure of the present application.

[0017] Figure 4 It is a schematic diagram of the structure of the present application Figure 3 at A.

[0018] Figure 5 It is a schematic diagram of the structure of the present application at the extrusion piston block.

[0019] Figure 6 It is a schematic diagram of the structure of the present application at the switching disc.

[0020] Figure 7 It is a schematic diagram of the structure of the present application Figure 6 at B.

[0021] Fig. 101 - jet disc; 102 - switching disc; 103 - resistance adjusting threaded frame; 104 - tooth ring disc; 105 - jet; 106 - feed inlet; 107 - power switching gear; 108 - driving gear; 109 - switching gear mounting disc; 110 - tooth ring disc support shell; 111 - constant pressure channel; 112 - extrusion piston cavity; 113 - extrusion piston block; 114 - return tension spring; 115 - extrusion conduit; 116 - first electric valve; 117 - central spindle; 118 - mixed fuel gas pipeline; 119 - driving shunt pipeline; 120 - second electric valve; 121 - impeller; 122 - air release connector; 123 - annular plate; 124 - air release port; 125 - mixed flow channel; 126 - third electric valve; 127 - feed pipe; 128 - spiral preheating pipe; 129 - soaking cover; 130 - base; 131 - air release ring. DETAILED DESCRIPTION

[0022] The technical solutions of the present application are further illustrated below in conjunction with the accompanying drawings. Figures 1-7 The technical solutions of the present application are further illustrated below in conjunction with the accompanying drawings.

[0023] The present application provides an energy-saving ammonia-hydrogen mixed gas burner, comprising a jet disc 101, a switching disc 102 is rotatably installed on the jet disc 101, the switching disc 102 is in rotational sealing cooperation with the contact surface of the jet disc 101, and a tooth ring disc 104 is rotatably installed on the side of the jet disc 101 away from the switching disc 102, and the tooth ring disc 104 is coaxially fixed with the switching disc 102 through a rotating shaft; a feed inlet 106 is arranged at the edge position of the jet disc 101, a plurality of jets 105 are arranged in a circular array on the upper surface of the switching disc 102, and each jet 105 is concentrically aligned with the feed inlet 106; a mixed fuel gas pipeline 118 is fixedly and communicatively installed on the feed inlet 106, and the mixed fuel gas pipeline 118 is fixedly and communicatively installed on a mixed flow channel 125; wherein two spiral preheating pipes 128 are arranged above the jet disc 101, one end of each of the two spiral preheating pipes 128 is connected with an ammonia gas supply pipeline and a hydrogen gas supply pipeline respectively, and the other end of each of the two spiral preheating pipes 128 is communicatively arranged inside the mixed flow channel 125 through two feed pipes 127.

[0024] The diameter of each nozzle 105 is not the same; wherein the jet disc 101 is also coaxially fixedly installed with a resistance adjusting threaded frame 103 in a threaded manner, the resistance adjusting threaded frame 103 is used for rotating and embedding the switching disc 102 on the jet disc 101. The middle part of the two supply pipes 127 is connected in series with a third electric valve 126, the third electric valve 126 is used for adjusting the flow of gaseous fuel in the spiral preheating pipe 128. The circumference of the jet disc 101 is fixedly installed with a gas leakage ring 131, the gas leakage ring 131 is fixedly communicated with the driving shunt pipe 119 through the gas leakage connector 122, the end of the driving shunt pipe 119 away from the gas leakage connector 122 is fixedly communicated with the mixed fuel gas pipe 118, and the middle part of the driving shunt pipe 119 is provided with a second electric valve 120, the second electric valve 120 is used for adjusting the flow of gaseous fuel in the driving shunt pipe 119; the gas leakage ring 131 is coaxially fixedly installed with an annular plate 123, a plurality of gas leakage openings 124 are arranged in a circular array on the annular plate 123. One of the middle parts of the driving shunt pipe 119 is coaxially matched with the jet disc 101, and the middle part of the driving shunt pipe 119 is rotatably installed with an impeller 121, the axis position of the impeller 121 is fixedly installed with a central spindle 117, one end of the central spindle 117 penetrates to the outside of the driving shunt pipe 119, and the central spindle 117 is rotatably sealed with the driving shunt pipe 119. The outside of the tooth ring disc 104 is sleeved with a tooth ring disc support shell 110, the tooth ring disc support shell 110 is fixedly installed on the lower surface of the jet disc 101, the axis position of the inner side of the tooth ring disc 104 is rotatably matched with a driving gear 108, the driving gear 108 and the tooth ring disc 104 are meshed and transmitted through a plurality of power switching gears 107, all the power switching gears 107 are rotatably installed on a switching gear mounting disc 109 coaxial with the tooth ring disc 104, the switching gear mounting disc 109 is rotatably arranged on the inner side of the tooth ring disc support shell 110. The end of the central spindle 117 away from the impeller 121 penetrates the tooth ring disc support shell 110 and the switching gear mounting disc 109 in sequence and is fixed with the driving gear 108, and the central spindle 117 is rotatably matched with the tooth ring disc support shell 110 and the switching gear mounting disc 109. The lower surface of the tooth ring disc support shell 110 is fixedly communicated with an extrusion piston cavity 112, an extrusion piston block 113 is slidably sealed on the inner wall of the extrusion piston cavity 112, the inside of the extrusion piston cavity 112 is communicated with the mixed fuel gas pipe 118 through an extrusion conduit 115, the middle part of the extrusion conduit 115 is connected in series with a first electric valve 116, wherein the radial position of the tooth ring disc support shell 110 is provided with a constant pressure channel 111 communicated with the extrusion piston cavity 112, the constant pressure channel 111 is used for communicating the extrusion piston cavity 112 with the outside atmosphere.The extrusion piston cavity 112 is divided into two spaces by the extrusion piston block 113, one of which contains the reset tension spring 114, and the space containing the reset tension spring 114 is communicated with the extrusion conduit 115, and the other space is the space facing the switching gear mounting disc 109 and communicated with the constant pressure channel 111, which is used for exhaust to facilitate the pressure difference between the two sides of the extrusion piston block 113. The reset tension spring 114 is elastically mounted between the extrusion piston block 113 and the inner wall bottom surface of the extrusion piston cavity 112, the two ends of the reset tension spring 114 are fixedly connected with the extrusion piston block 113 and the extrusion piston cavity 112, and the reset tension spring 114 is used to pull the extrusion piston block 113 to move away from the switching gear mounting disc 109. The mixed flow channel 125 is fixedly installed on the base 130, and the base 130 is fixedly installed with the heat uniformizing cover 129, which is sleeved outside the spiral preheating pipe 128.

[0025] The working principle of the energy-saving ammonia-hydrogen mixed gas burner disclosed by the application is as follows: ammonia gas and hydrogen gas are communicated with two spiral preheating pipes 128 respectively, and in the default state, the two third electric valves 126 are in the fully closed state, at this time, the ammonia gas and the hydrogen gas cannot flow, when one of the third electric valves 126 is opened (the opening and closing degree of the third electric valve 126 can control the flow of ammonia gas and hydrogen gas), then the gas enters the mixed flow channel 125 through the feeding pipe 127, and then enters the mixed fuel gas pipeline 118 (in the default state, the first electric valve 116 and the second electric valve 120 are in the closed state). The opening and closing of the two third electric valves 126 can also be controlled at the same time, and the opening and closing ratio is the required ratio of ammonia gas and hydrogen gas mixed combustion. The gas in the mixed fuel gas pipeline 118 is sprayed out through the nozzle 105 aligned with the feeding port 106 at this time. The gas is ignited by electric ignition, and the combustion of the ignited gas heats the spiral preheating pipe 128, and the heated spiral preheating pipe 128 preheats the gas flowing in the inside, thereby improving the combustion efficiency of the gas, for energy supply of the energy-saving generator and generator set, and different nozzles 105 can be aligned with the feeding port 106 to change the gas combustion performance. Specifically, the second electric valve 120 and the first electric valve 116 need to be opened at the same time (for mutual inspection, only one opening is invalid), and the opening time is controlled, the gas in the mixed fuel gas pipeline 118 enters the driving shunt pipeline 119 through the second electric valve 120, then drives the impeller 121 to rotate, then enters the gas leakage ring 131 through the gas leakage connecting head 122, and finally is sprayed out for combustion (pressure relief) through the gas leakage port 124, wherein the rotation of the impeller 121 drives the center main shaft 117 to rotate, the rotation of the center main shaft 117 drives the driving gear 108 to rotate, the rotation of the driving gear 108 drives the power switching gear 107 to rotate, the rotation of the power switching gear 107 drives the gear ring disc 104 to rotate, the rotation of the gear ring disc 104 drives the switching disc 102 to rotate, and the rotation angle of the switching disc 102 can be controlled by controlling the opening time and opening and closing degree of the second electric valve 120, so that the corresponding nozzle 105 is aligned with the feeding port 106.Need to explain, at this time need to let the first electric valve 116 also in the open state, so that the gas pipeline 118 inside the gas pressure will be transmitted to the extrusion piston cavity 112 through the extrusion pipe 115, and then push the extrusion piston block 113 to overcome the elastic force of reset tension spring 114 to move to the switching gear mounting disc 109, so that the extrusion piston block 113 and switching gear mounting disc 109 contact, through the gas pressure to extrusion piston block 113 on switching gear mounting disc 109 to apply, let extrusion piston block 113 through the friction limit switching gear mounting disc 109 rotation, so that the switching gear mounting disc 109 can't rotate, switching gear mounting disc 109 can't rotate power switch gear 107 can't revolve, at this time the power will be smoothly from the drive gear 108 to the gear ring disc 104, on the contrary if the first electric valve 116 is not open, at this time the gas pressure inside the extrusion pipe 115 will disappear, the pressure inside the extrusion piston cavity 112 will also disappear, at this time the extrusion piston block 113 will be separated from the switching gear mounting disc 109 under the action of reset tension spring 114 (extrusion piston block 113 is provided with a micro hole, for exhaust), so that the switching gear mounting disc 109 can rotate again freely, at this time the rotation of the drive gear 108 power will be transmitted to the revolution of power switch gear 107, but not to the gear ring disc 104, because the gear ring disc 104 rotation needs to overcome more resistance, and the resistance is greater than the resistance of the switching gear mounting disc 109 rotation, and the gear ring disc 104 is need to drive the switching disc 102 rotation, switching disc 102 and jet disc 101 sealing fit relationship further increases the resistance of rotation.

Claims

1. An energy-saving ammonia-hydrogen mixed gas burner, characterized in that: The jet disc (101) is provided with a switching disc (102) which is rotatably installed on the jet disc (101) and is in rotatable sealing cooperation with the contact surface of the jet disc (101), and a gear ring disc (104) is rotatably installed on the side of the jet disc (101) away from the switching disc (102) and is coaxially fixed with the switching disc (102) through a rotating shaft; a feed inlet (106) is arranged at the edge position of the jet disc (101), and a plurality of jet ports (105) are arranged in a circular array on the upper surface of the switching disc (102) and are concentrically aligned with the feed inlet (106); A mixed fuel gas pipeline (118) is fixedly and communicatively installed on the feed inlet (106) and is fixedly and communicatively installed on a mixed flow channel (125); two spiral preheating pipes (128) are arranged above the jet disc (101), one end of each of the two spiral preheating pipes (128) is connected with an ammonia gas supply pipeline and a hydrogen gas supply pipeline, and the other end of each of the two spiral preheating pipes (128) is communicatively arranged in the mixed flow channel (125) through two feed pipes (127).

2. The energy-saving ammonia-hydrogen mixture gas burner according to claim 1, characterized in that: The diameters of the jet ports (105) are different; a resistance adjusting threaded frame (103) is coaxially fixed and installed on the jet disc (101) by screwing, and the resistance adjusting threaded frame (103) is used for rotatably embedding the switching disc (102) on the jet disc (101).

3. The energy-saving ammonia-hydrogen mixture gas burner according to claim 2, characterized in that: Third electric valves (126) are serially installed in the middle portions of the two feed pipes (127), and the third electric valves (126) are used for adjusting the flow of the gas fuel in the spiral preheating pipes (128).

4. The energy-saving ammonia-hydrogen mixture gas burner according to claim 3, characterized in that: A gas discharge ring (131) is fixedly installed on the circumference of the jet disc (101), the gas discharge ring (131) is fixedly and communicatively installed on a driving shunt pipeline (119) through a gas discharge connector (122), one end of the driving shunt pipeline (119) away from the gas discharge connector (122) is fixedly and communicatively installed on the mixed fuel gas pipeline (118), a second electric valve (120) is arranged in the middle portion of the driving shunt pipeline (119), the second electric valve (120) is used for adjusting the flow of the gas fuel in the driving shunt pipeline (119), and an annular plate (123) is coaxially fixed and installed on the gas discharge ring (131), a plurality of gas discharge ports (124) are arranged in a circular array on the annular plate (123).

5. The energy-saving ammonia-hydrogen mixture gas burner according to claim 4, characterized in that: One section of the middle portion of the driving shunt pipeline (119) is coaxially matched with the jet disc (101), an impeller (121) is rotatably installed in the middle portion of the driving shunt pipeline (119), a center main shaft (117) is fixedly installed at the shaft center position of the impeller (121), one end of the center main shaft (117) penetrates to the outside of the driving shunt pipeline (119), and the center main shaft (117) is in rotatable sealing cooperation with the driving shunt pipeline (119).

6. The energy-saving ammonia-hydrogen mixture gas burner according to claim 5, characterized in that: The outer part of the gear ring disc (104) is sleeved with a gear ring disc support shell (110), which is fixedly installed on the lower surface of the air jet disc (101), and the shaft center position on the inner side of the gear ring disc (104) is rotationally matched with a driving gear (108), which is in mesh transmission with the gear ring disc (104) through a plurality of power switching gears (107), all of which are rotationally installed on a switching gear installation disc (109) coaxial with the gear ring disc (104), and the switching gear installation disc (109) is rotationally arranged on the inner side of the gear ring disc support shell (110).

7. The energy-saving ammonia-hydrogen mixture gas burner according to claim 6, characterized in that: Wherein the end of the center main shaft (117) away from the impeller (121) penetrates the gear ring disc support shell (110) and the switching gear installation disc (109) in sequence and is fixed with the driving gear (108), and the center main shaft (117) is rotationally matched with the gear ring disc support shell (110) and the switching gear installation disc (109).

8. The energy-saving ammonia-hydrogen mixture gas burner according to claim 7, characterized in that: The lower surface of the gear ring disc support shell (110) is fixedly connected with an extrusion piston cavity (112), the extrusion piston cavity (112) is slidably sealed with an extrusion piston block (113), the inside of the extrusion piston cavity (112) is communicated with the mixing gas pipeline (118) through an extrusion conduit (115), the middle part of the extrusion conduit (115) is connected in series with a first electric valve (116), and the radial position of the gear ring disc support shell (110) is provided with a constant pressure channel (111) communicated with the extrusion piston cavity (112), which is used for communicating the extrusion piston cavity (112) with the outside atmosphere.

9. The energy-saving ammonia-hydrogen mixture gas burner according to claim 8, characterized in that: The extrusion piston block (113) and the inner wall bottom surface of the extrusion piston cavity (112) are elastically connected with a reset tension spring (114), the two ends of the reset tension spring (114) are fixedly connected with the extrusion piston block (113) and the extrusion piston cavity (112), and the reset tension spring (114) is used for driving the extrusion piston block (113) to move away from the switching gear installation disc (109).

10. The energy-saving ammonia-hydrogen mixture gas burner according to claim 9, characterized in that: The mixed flow channel (125) is fixedly installed on the base (130), and the base (130) is fixedly installed with a heat equalizing cover (129), which is sleeved on the outer side of the spiral preheating pipe (128).

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