CN213542464U - Ultralow nitrogen gas burner - Google Patents

Abstract

The utility model discloses an ultra-low nitrogen gas burner, wherein a blower is communicated with the upstream end of a mixing tube body, the downstream end of the mixing tube body is provided with an igniter, and a mixing mechanism is arranged at the middle position of the inner side of the mixing tube body in a matching way; the mixing mechanism includes: the gas mixing device comprises a sealing disc, a mounting disc, an air passage, a first mixed gas passage, a mixing cavity, a mounting shaft body, a stirring blade, a gas nozzle and a gas passage, wherein the sealing disc and the mounting disc are sequentially arranged along a mixing pipe body, the air passage is arranged on the sealing disc, the first mixed gas passage is arranged on the mounting disc, the mixing cavity is arranged between the sealing disc and the mounting disc, the mounting shaft body penetrates through the mixing cavity in a relative rotation mode, the stirring blade is mounted on the mounting shaft body, the gas nozzle is arranged on the mounting shaft body and is positioned in the mixing cavity and close; the inlet end of the gas passage is communicated with the gas pump through a communicating pipe. The utility model discloses have the abundant burning of assurance gas, effectively reduce oxynitride and arrange, improve the beneficial effect of combustor stability and security outward.

Description

Ultralow nitrogen gas burner

Technical Field

The utility model relates to a combustor equipment technical field, specific ultralow nitrogen gas burner that says so.

Background

The burner using fuel gas as fuel is an important equipment of steam boiler, hot water boiler and industrial kiln, and it can ensure the stable ignition and combustion of fuel gas and produce combustion waste gas. Traditional combustor is at the in-process of burning gas, hardly guarantees the intensive mixing of gas and air, causes the gas combustion insufficient, and then contains a large amount of oxynitrides in making outer exhaust gas, causes the pollution of considerable degree to the outside air, has also caused the waste of resource simultaneously. In order to improve the atmospheric environment and improve the resource utilization rate, it is necessary to design an ultra-low nitrogen burner which can ensure the full combustion of fuel gas, effectively reduce the discharge of oxynitride and improve the stability and safety of the burner.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned weak point that exists among the prior art, the utility model aims at providing an guarantee the abundant burning of gas, effectively reduce the outer ultralow nitrogen combustor that arranges, improve combustor stability and security of oxynitrides.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: an ultralow-nitrogen gas burner comprises an air blower, a mixing tube body, a mixing mechanism, a gas pump and an igniter, wherein an air outlet of the air blower is hermetically connected and communicated with the upstream end of the mixing tube body, the igniter is arranged at the downstream end of the mixing tube body in a matched manner, and the mixing mechanism is arranged at the middle section of the inner side of the mixing tube body in a matched manner;

the mixing mechanism includes: the gas mixing device comprises a sealing disc, a mounting disc, an air passage, a first mixed gas passage, a mixing cavity, a mounting shaft body, a plurality of groups of stirring blades, a gas nozzle, a gas passage and a driving motor, wherein the sealing disc and the mounting disc are sequentially arranged from the upstream end to the downstream end of a mixing pipe body and are fixedly embedded and fixed with the inner side wall of the mixing pipe body; the inlet end of the fuel gas passage is communicated with the gas outlet of the fuel gas pump through a communicating pipe.

The mixing tube body is horizontally arranged, the downstream end of the mixing roller body is matched and communicated to a combustion chamber of the boiler, and a mounting support is fixedly connected to the bottom of the mixing tube body.

The one end of installation axis body leads to the upstream side of sealed dish and is consolidated there is drive sprocket on it, driving motor fixed mounting is at the upstream end in the mixed body outside, the drive sprocket is consolidated in driving motor's the axis of rotation, and drive sprocket passes through chain power with drive sprocket and is connected.

The hybrid tube body is fixedly provided with a sealing cover, the driving motor is arranged in the sealing cover, a chain opening is formed between the hybrid tube body and the sealing cover, and the chain penetrates through the chain opening to be connected with the transmission chain wheel and the driving chain wheel in a meshed mode.

Communicating pipe and gas passageway intercommunication department set up in the mounting disc, the annular groove has been seted up on mounting shaft body and the communicating pipe opposite face, be provided with annular arch on communicating pipe and the mounting shaft body opposite face, and the nested inosculation of annular groove, annular arch is and keep relative rotation, communicating pipe fixed mounting is in the mounting disc and by the mounting disc downstream side lead to deal with the mixed body outside with the gas outlet intercommunication of gas pump, gas pump fixed mounting is at the outside end of mixing the body.

The mixed pipe body inboard still is provided with the heat insulating disc, and the heat insulating disc sets up the downstream side of communicating pipe, the upstream side of some firearm, the supporting first check valve of installing in the air passage, set up the second mist passageway in intercommunication heat insulating disc both sides space on the heat insulating disc, and the supporting second check valve of installing in the second mist passageway.

The utility model has the advantages that: because the gas nozzle is arranged at the position close to the sealing disc, air and gas entering the mixing cavity can be fully and uniformly mixed by the plurality of groups of stirring blades, are conveyed to the position of the igniter along the first mixed gas passage and the second mixed gas passage, are ignited and combusted by the igniter, the full combustion of the gas is ensured, and the content of oxynitride in the discharged flue gas is effectively reduced;

and because the setting of heat insulating disc, can effectively avoid the gas, the air gas mixture burning that is lighted and is burnt by the some firearm to burn and make high temperature or flame to heat insulating disc upstream side transmission, improve the stability and the security of combustor work.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged detail view of portion A of FIG. 1;

fig. 3 is an enlarged detail view of the portion B in fig. 1.

In the figure: 1 blower, 2 mixing tube bodies, 3 fuel pump, 4 igniter, 5 sealing disc, 6 mounting disc, 7 air passage, 8 first mixed gas passage, 9 mixing cavity, 10 mounting shaft body, 11 stirring blade, 12 gas nozzle, 13 gas passage, 14 driving motor, 15 communicating pipe, 16 mounting support, 17 driving chain wheel, 18 driving chain wheel, 19 sealing cover, 20 annular bulge, 21 heat insulation disc, 22 first one-way valve, 23 second mixed gas passage and 24 second one-way valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an ultra-low nitrogen gas burner comprises a blower 1, a mixing tube 2, a mixing mechanism, a gas pump 3 and an igniter 4, wherein an air outlet of the blower 1 is hermetically connected and communicated with an upstream end of the mixing tube 2, the igniter 4 is arranged at a downstream end of the mixing tube 2 in a matching way, and the mixing mechanism is arranged at a middle position of the inner side of the mixing tube 2 in a matching way;

the mixing mechanism includes: a sealing disk 5 and a mounting disk 6 which are sequentially arranged from the upstream end to the downstream end of the mixing tube body 2 and are fixedly embedded with the inner side wall of the mixing tube body 2, an air passage 7 which is arranged on the sealing disk 5 and communicated with the spaces at two sides of the sealing disk 5, a first mixed gas passage 8 which is arranged on the mounting disk 6 and communicated with the spaces at two sides of the mounting disk 6, a mixing cavity 9 which is arranged between the sealing disk 5 and the mounting disk 6, the gas mixing device comprises a mounting shaft body 10 which is nested and mounted on a sealing disc 5 and a mounting disc 6 in a relative rotation mode and penetrates through a mixing cavity 9, a plurality of groups of stirring blades 11 fixedly mounted on the mounting shaft body 10, a gas nozzle 12 which is arranged on the mounting shaft body 10 and is positioned in the mixing cavity 9 and close to one end of the sealing disc 5, a gas passage 13 which is arranged on the inner side of the mounting shaft body 10 and communicated with the gas nozzle 12, and a driving motor 14 which is in power connection with the mounting shaft body 10; the inlet end of the gas path 13 is communicated with the outlet of the gas pump 3 through a communication pipe 15.

In the utility model, the mixing tube body 2 is horizontally arranged and the downstream end of the mixing roller body is communicated with the combustion chamber of the boiler, and the bottom of the mixing tube body 2 is fixedly connected with the mounting support 16 to ensure the stable mounting of the mixing tube body 2;

one end of the mounting shaft body 10 passes through the upstream side of the sealing disc 5 and is fixedly connected with a transmission chain wheel 17, the driving motor 14 is fixedly mounted at the upstream end of the outer side of the mixing pipe body 2, the driving chain wheel 18 is fixedly connected with the rotating shaft of the driving motor 14, the driving chain wheel 18 is in power connection with the transmission chain wheel 17 through a chain, the driving motor 14 works to drive the driving chain wheel 18 to rotate, and then the transmission chain wheel 17 and the mounting shaft body 10 fixedly connected with the transmission chain wheel 17 are driven to rotate;

a sealing cover 19 is fixedly arranged on the mixing tube body 2, the driving motor 14 is arranged in the sealing cover 19, a chain through hole is formed between the mixing tube body 2 and the sealing cover 19, and a chain penetrates through the chain through hole to be meshed and connected with the transmission chain wheel 17 and the driving chain wheel 18, so that high-pressure air sent into the mixing tube body 2 by the air blower 1 is prevented from leaking;

the communicating part of the communicating pipe 15 and the gas passage 13 is arranged in the mounting disc 6, the opposite surfaces of the mounting shaft body 10 and the communicating pipe 15 are provided with annular grooves, the opposite surfaces of the communicating pipe 15 and the mounting shaft body 10 are provided with annular protrusions 20, the annular grooves and the annular protrusions 20 are nested and engaged and keep relative rotation, so that the stable communication of the communicating pipe 15 and the gas passage 13 is ensured, the communicating pipe 15 is fixedly arranged in the mounting disc 6, the outer side of the mixing pipe body 2 is communicated with the gas outlet of the gas pump 3 through the downstream side of the mounting disc 6, the gas pump 3 is fixedly arranged at the outer side end of the mixing pipe body 2, and gas is pumped by the gas pump 3, sent into the mixing cavity 9 through the communicating pipe 15 and the gas passage 13 through the gas;

the inner side of the mixing pipe body 2 is also provided with a heat insulation disc 21, and the heat insulation disc 21 is arranged at the downstream side of the communicating pipe 15 and the upstream side of the igniter 4, so that the combustion of the gas and air mixture ignited and combusted by the igniter 4 is avoided, the high temperature is prevented from being transmitted to the upstream side of the heat insulation disc 21, and the working stability and the safety of the combustor are improved; first check valve 22 is installed in the supporting way in air passage 7, avoid gas along air passage 7 reverse inflow sealed dish 5 upstream side in the hybrid chamber 9, set up the second mist passageway 23 that communicates thermal-insulated dish 21 both sides space on the thermal-insulated dish 21, and the supporting second check valve 24 of installing in the second mist passageway 23, the mist that avoids the thermal-insulated dish 21 outside to carry out the burning is along the reverse inflow hybrid chamber 9 of second mist passageway 23 or communicating pipe 15 department and is burnt, cause the influence to the steady operation of combustor.

The utility model discloses a theory of operation is: when the gas mixing device is used, external air is pressurized through the blower 1 and conveyed into the mixing cavity 9 along the air passage 7, gas is pressurized through the gas pump 3 and conveyed into the mixing cavity 9 through the communicating pipe 15 and the gas passage 13 and the gas nozzle 12, and the gas nozzle 12 is arranged at a position close to the sealing disc 5, so that the air and the gas entering the mixing cavity 9 are fully and uniformly mixed through the multiple groups of stirring blades 11 and conveyed to the igniter 4 along the first mixed gas passage 8 and the second mixed gas passage 23 to be ignited and combusted through the igniter 4;

and because the setting of the heat insulating disc 21, can prevent effectively that the gas, air gas mixture that is ignited and burnt by the igniter 4 burns and makes high temperature or flame transmit to the upstream side of the heat insulating disc 21, improve stability and security that the burner works.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides an ultralow nitrogen gas combustor which characterized in that: the device comprises an air blower (1), a mixing tube body (2), a mixing mechanism, a fuel pump (3) and an igniter (4), wherein an air outlet of the air blower (1) is hermetically connected and communicated with the upstream end of the mixing tube body (2), the igniter (4) is arranged at the downstream end of the mixing tube body (2) in a matched manner, and the mixing mechanism is arranged at the middle position of the inner side of the mixing tube body (2) in a matched manner;

the mixing mechanism includes: a sealing disc (5) and a mounting disc (6) which are sequentially arranged from the upstream end to the downstream end of the mixing pipe body (2) and are fixedly embedded with the inner side wall of the mixing pipe body (2), an air passage (7) which is arranged on the sealing disc (5) and is communicated with the spaces at two sides of the sealing disc (5), a first mixed gas passage (8) which is arranged on the mounting disc (6) and is communicated with the spaces at two sides of the mounting disc (6), a mixing cavity (9) which is arranged between the sealing disc (5) and the mounting disc (6), a mounting shaft body (10) which is arranged on the sealing disc (5) and the mounting disc (6) in a relative rotating manner in a nested manner and penetrates through the mixing cavity (9), a plurality of groups of stirring blades (11) which are fixedly arranged on the mounting shaft body (10), a gas nozzle (12) which is arranged on the mounting shaft body (10) and is positioned in the mixing cavity (9) and is close to one end of the sealing disc (5), and a gas passage, a driving motor (14) which is in power connection with the mounting shaft body (10); the inlet end of the fuel gas passage (13) is communicated with the gas outlet of the fuel gas pump (3) through a communicating pipe (15).

2. The ultra-low nitrogen gas burner of claim 1, wherein: the mixing tube body (2) is horizontally arranged, the downstream end of the mixing tube body is matched and communicated to a combustion chamber of the boiler, and a mounting support (16) is fixedly connected to the bottom of the mixing tube body (2).

3. The ultra-low nitrogen gas burner of claim 1, wherein: the one end of installation axis body (10) is led through the upstream side of sealed dish (5) and is consolidated drive sprocket (17) on it, driving motor (14) fixed mounting is at the upstream end in mixing body (2) outside, consolidated drive sprocket (18) in the axis of rotation of driving motor (14), and drive sprocket (18) pass through chain power with drive sprocket (17) and be connected.

4. An ultra-low nitrogen gas burner as set forth in claim 3, wherein: fixed mounting has sealed cowling (19) on mixing body (2), driving motor (14) set up in sealed cowling (19), the chain opening has been seted up between mixing body (2) and sealed cowling (19), the chain runs through the chain opening and is connected with drive sprocket (17), drive sprocket (18) meshing.

5. The ultra-low nitrogen gas burner of claim 4, wherein: communicating pipe (15) and gas passageway (13) intercommunication department set up in mounting disc (6), the annular groove has been seted up on installation axis body (10) and communicating pipe (15) opposite face, be provided with annular arch (20) on communicating pipe (15) and installation axis body (10) opposite face, and annular groove, annular arch (20) nested coincide and keep relative rotation, communicating pipe (15) fixed mounting just by mounting disc (6) downstream side expert dispose mix body (2) the outside with the gas outlet intercommunication of gas pump (3), gas pump (3) fixed mounting is at the outside end of mixing body (2).

6. The ultra-low nitrogen gas burner of claim 5, wherein: mix body (2) inboard still is provided with thermal-insulated dish (21), and thermal-insulated dish (21) set up the downstream side of communicating pipe (15), the upstream side of some firearm (4), supporting first check valve (22) of installing in air passage (7), set up second mist passageway (23) of intercommunication thermal-insulated dish (21) both sides space on thermal-insulated dish (21), and supporting second check valve (24) of installing in second mist passageway (23).

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