CN114353075A

CN114353075A - Ultralow nitrogen combustor

Info

Publication number: CN114353075A
Application number: CN202210052176.6A
Authority: CN
Inventors: 刘继云; 肖芳; 罗建领
Original assignee: Cangzhou Tianlong Burning Equipment Co ltd
Current assignee: Cangzhou Tianlong Burning Equipment Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-04-15

Abstract

The invention relates to the technical field of burners, in particular to an ultra-low nitrogen burner which can fully burn natural gas, effectively reduce the generation of nitrogen oxides and improve the practicability; including box, defeated tuber pipe, burning torch, gas bag, swirler, blender and flame tube, box, defeated tuber pipe and flame tube connect gradually and constitute the combustor casing, gas bag one end and box fixed connection for carry combustion gas, and the gas bag other end is connected with the blender, the blender is arranged in the flame tube, and the bottom half is provided with the air intake, the swirler sets up on the gas bag to the swirler is located the blender front end, the burning torch sets up inside the combustor casing to burning torch one end is passed the swirler and is close to the blender.

Description

Ultralow nitrogen combustor

Technical Field

The invention relates to the technical field of combustors, in particular to an ultralow-nitrogen combustor.

Background

As is well known, a burner is a device for converting a substance into heat energy through a chemical reaction mode of combustion, that is, air and fuel are mixed and sprayed out through a premixing device according to a proper proportion so as to be sufficiently combusted, so that a boiler is provided with more efficient heat energy.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the ultralow nitrogen combustor which can enable natural gas to be fully combusted, effectively reduce the generation of nitrogen oxides and improve the practicability.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an ultra-low nitrogen combustor, includes box, defeated tuber pipe, burning torch, gas bag, swirler, blender and flame holder, box, defeated tuber pipe and flame holder connect gradually and constitute the combustor casing, gas bag one end and box fixed connection for carry combustion gas to the gas bag other end is connected with the blender, and the bottom half is provided with the air intake, the blender is arranged in the flame holder, the swirler sets up on the gas bag to the swirler is located the blender front end, burning torch sets up inside the combustor casing to burning torch one end is passed the swirler and is close to the blender.

The tail end of the ignition gun is provided with 3 connecting ports, and 1 is connected with fuel gas; 2, connecting a high-voltage ignition transformer; 3 is connecting combustion air; after the ignition transformer is switched on, sparks are generated, the fuel gas is ignited, and the flame is stably combusted by the combustion-supporting air.

The utility model discloses a flame tube, including fire tube rear end, connecting axle and connecting plate, two sets of stationary blade and fixing base, the box front side is provided with the multiunit fixed orifices, defeated tuber pipe one side is provided with first mounting flange to be provided with mounting flange on defeated tuber pipe, be used for being connected defeated tuber pipe and boiler, defeated tuber pipe is through first mounting flange and box flange joint, and is provided with the mounting hole at the box rear side, the flame tube rear end inserts to defeated tuber pipe in, two sets of stationary blades are connected with connecting axle and connecting plate respectively to two sets of stationary blades pass through bolted connection, the fixing base is installed in mounting hole department to fixing base and connecting axle trailing end connection, connecting plate and flame tube inner wall connection.

Specifically, a plurality of groups of mounting plates are arranged on the outer wall of the box body, and a plurality of groups of positioning holes are respectively arranged on the plurality of groups of mounting plates.

Specifically, the bottom half is provided with fixed pipe to be provided with two sets of second mounting flange respectively at fixed pipe both ends, gas baotou portion is provided with third mounting flange, gas bag and box pass through third mounting flange and be located the inside second mounting flange fixed connection of box.

Specifically, the swirler includes annular seat and multiunit flabellum, the annular seat suit is fixed to the gas bag on, the equal slant of multiunit flabellum sets up on the annular seat outer wall to be provided with the multiunit ventilation hole on the multiunit flabellum respectively.

The novel gas-insulated ignition gun comprises an ignition gun body and is characterized by further comprising a fixing ring and a mounting seat, the fixing ring is fixed to the outer portion of the ignition gun body in a sleeved mode, two ends of the mounting seat are connected with the fixing ring and the outer wall of the gas bag respectively, and one end of the ignition gun body penetrates through a group of adjacent ventilation holes.

Specifically, the blender includes multiunit shunt tubes and annular mixed seat, multiunit shunt tubes both ends are connected with gas bag and annular mixed seat respectively, the inside cavity of annular mixed seat to annular mixed seat inner wall is provided with annular gas outlet, be provided with the multiunit venthole on annular mixed seat afterbody and the lateral wall respectively.

Specifically, the edge area of the tail part of the flame tube is provided with a slope, the slope angle is 142 degrees, and the tail part of the flame tube is provided with a multi-component flow hole.

(III) advantageous effects

Compared with the prior art, the invention provides an ultralow-nitrogen combustor which has the following beneficial effects:

1. when the combustor is used, air enters the combustor shell from the box body, the cyclone is arranged in the process of gas flowing, the cyclone is used for forming cyclone flow in the combustor, and partial air and natural gas are fully mixed;

2. when the natural gas burner is used, natural gas is input into the mixer through the gas bag, is fully mixed with air in the mixer, is discharged after being divided by the mixer, enters the flame tube, is sprayed out after being converged according to a designed gas outlet mode, and is ignited through the igniter to combust the natural gas to form concentrated nitrogen combustion;

3. in the combustion process of natural gas, flame is shunted through multi-component flow holes at the tail part of the flame tube, so that the temperature of local flame is reduced, and the flame can be combusted at multiple positions, thereby fully combusting the natural gas and avoiding pollution caused by a large amount of nitrogen oxides generated by overhigh temperature;

when the burner is adopted, natural gas can be fully combusted, the generation of nitrogen oxides can be effectively reduced, and the practicability is improved.

Drawings

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

FIG. 2 is a schematic view of an axial detonation configuration of the present invention;

in the drawings, the reference numbers: 1. a box body; 2. a wind delivery pipe; 3. an ignition gun; 4. air bags; 5. a flame tube; 6. a connecting plate; 7. a connecting shaft; 8. a fixing sheet; 9. a fixed seat; 10. a first fixed flange; 11. installing a flange; 12. mounting a plate; 13. a fixed tube; 14. a second fixed flange; 15. a third fixed flange; 16. an annular seat; 17. a fan blade; 18. a fixing ring; 19. a mounting seat; 20. a shunt tube; 21. an annular mixing seat; 22. an air inlet; 23. a vent hole; 24. an air outlet; 25. and a shunt hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, an ultra-low nitrogen burner comprises a box body 1, an air delivery pipe 2, an ignition gun 3, an air bag 4, a swirler, a mixer and a flame tube 5, wherein the box body 1, the air delivery pipe 2 and the flame tube 5 are sequentially connected to form a burner housing, one end of the air bag 4 is fixedly connected with the box body 1 for delivering combustion gas, the other end of the air bag 4 is connected with the mixer, the mixer is positioned in the flame tube 5, the swirler is arranged on the air bag 4 and is positioned at the front end of the mixer, the mixer comprises a multi-component flow pipe 20 and an annular mixing seat 21, two ends of the multi-component flow pipe 20 are respectively connected with the air bag 4 and the annular mixing seat 21, the annular mixing seat 21 is hollow, an annular air outlet is arranged on the inner wall of the annular mixing seat 21, a plurality of air outlet holes 24 are respectively arranged on the tail part and the outer side wall of the annular mixing seat 21, the plurality of air outlet holes 24 are used for guiding air flow, make partial rotatory wind dredge to direct current wind, burning torch 3 sets up inside the combustor casing to burning torch 3 one end passes the swirler and is close to the blender, and the swirler includes annular seat 16 and multiunit flabellum 17, and annular seat 16 suit is fixed to gas bag 4 on, and multiunit flabellum 17 all sets up on annular seat 16 outer wall to be provided with multiunit ventilation hole 23 on multiunit flabellum 17 respectively.

The tail end of the ignition gun 3 is provided with 3 connecting ports, and 1 is connected with fuel gas; 2, connecting a high-voltage ignition transformer; 3 is connecting combustion air; the ignition transformer generates sparks after being switched on, fuel gas is ignited, combustion air enables flame to be stably combusted, the ignition transformer further comprises a fixing ring 18 and a mounting seat 19, the fixing ring 18 is fixed to the outside of the ignition gun 3 in a sleeved mode, two ends of the mounting seat 19 are connected with the fixing ring 18 and the outer wall of the air bag 4 respectively, and one end of the ignition gun 3 penetrates through a group of adjacent vent holes 23.

Still include connecting plate 6, connecting axle 7, two sets of stationary blades 8 and fixing base 9, 1 front side of box is provided with the multiunit fixed orifices, 2 one sides of defeated tuber pipe are provided with first mounting flange 10, and be provided with mounting flange 11 on defeated tuber pipe 2, be used for being connected defeated tuber pipe 2 with the boiler, defeated tuber pipe 2 is through first mounting flange 10 and 1 flange joint of box, and be provided with the mounting hole in 1 rear side of box, 5 rear ends of flame tube insert to defeated tuber pipe 2 in, two sets of stationary blades 8 are connected with connecting axle 7 and connecting plate 6 respectively, and two sets of stationary blades 8 pass through bolted connection, fixing base 9 is installed in mounting hole department, and fixing base 9 and 7 trailing end connection of connecting axle, the connecting plate is connected with the flame tube inner wall.

Be provided with multiunit mounting panel 12 on the box 1 outer wall, and be provided with the multiunit locating hole respectively on multiunit mounting panel 12, box 1 bottom is provided with air intake 22, be connected with the air feed machine, combustion-supporting air gets into box 1 through control system, and drive the air door axle through control system, the air door board is rotatory, be used for adjusting the amount of wind, box 1 bottom is provided with fixed pipe 13, and be provided with two sets of second mounting flange 14 respectively at fixed pipe 13 both ends, 4 heads of gas bag are provided with third mounting flange 15, gas bag 4 passes through third mounting flange 15 with box 1 and is located the inside second mounting flange 14 fixed connection of box 1.

The edge area of the tail part of the flame tube 5 is provided with a slope, the slope angle is 142 degrees, when direct current wind impacts a bevel, the wind forms an in-box rotation, the vortex phenomenon enables smoke in the furnace to form an internal circulation, and the tail part of the flame tube 5 is provided with a multi-component flow distribution hole 25.

When the ultra-low nitrogen burner is used, the fixing pipe 13 is communicated with a gas supply part through the second fixing flange 14, gas is conveyed into the gas bag 4 through the fixing pipe 13, combustion-supporting air enters the box body 1 and the conveying pipe through the air inlet 22, is shunted by the multiple groups of fan blades 17 to form rotational flow, enters the mixer to be fully mixed with the shunted gas, is discharged through the multiple groups of air outlet holes 24, is ignited by the igniter to enable the gas to be combusted, the multiple groups of shunting holes 25 are used for cutting flame, the flame is cut into multiple small flames, the small flames are small in size and fast in heat dissipation, the flame is dispersed, the central flames are combusted, and the generation of nitrogen oxides can be effectively controlled.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an ultra-low nitrogen combustor, its characterized in that, includes box (1), defeated tuber pipe (2), burning torch (3), gas bag (4), swirler, blender and flame tube (5), box (1), defeated tuber pipe (2) and flame tube (5) connect gradually and constitute the combustor casing, gas bag (4) one end and box (1) fixed connection for carry combustion gas to the gas bag (4) other end is connected with the blender, and box (1) bottom is provided with air intake (22), the blender is located flame tube (5), the swirler sets up on gas bag swirler (4) to the burning torch is located the blender front end, burning torch (3) set up inside the combustor casing, and burning torch (3) one end is passed the swirler and is close to the blender.

2. An ultra-low nitrogen burner as claimed in claim 1, further comprising a connecting plate (6), a connecting shaft (7), two sets of fixing pieces (8) and a fixing seat (9), wherein a plurality of sets of fixing holes are formed in the front side of the case (1), a first fixing flange (10) is arranged on one side of the air delivery pipe (2), a mounting flange (11) is arranged on the air delivery pipe (2), the air delivery pipe (2) is flange-connected with the case (1) through the first fixing flange (10), a mounting hole is formed in the rear side of the case (1), the rear end of the flame tube (5) is inserted into the air delivery pipe (2), the two sets of fixing pieces (8) are respectively connected with the connecting shaft (7) and the connecting plate (6), the two sets of fixing pieces (8) are connected through bolts, the fixing seat (9) is mounted at the mounting hole, and the fixing seat (9) is connected with the tail end of the connecting shaft (7), the connecting plate (6) is connected with the inner wall of the flame tube (5).

3. An ultra-low nitrogen burner as claimed in claim 1, wherein a plurality of sets of mounting plates (12) are provided on the outer wall of the box body (1), and a plurality of sets of positioning holes are provided on the plurality of sets of mounting plates (12), respectively.

4. An ultra-low nitrogen burner as claimed in claim 1, wherein a fixing pipe (13) is arranged at the bottom of the box body (1), two sets of second fixing flanges (14) are respectively arranged at two ends of the fixing pipe (13), a third fixing flange (15) is arranged at the head of the gas bag (4), and the gas bag (4) is fixedly connected with the box body (1) through the third fixing flange (15) and the second fixing flange (14) positioned inside the box body (1).

5. An ultra-low nitrogen burner as claimed in claim 1, wherein the swirler comprises an annular seat (16) and a plurality of sets of fan blades (17), the annular seat (16) is fixed on the air bag (4) in a sleeved manner, the plurality of sets of fan blades (17) are all obliquely arranged on the outer wall of the annular seat (16), and a plurality of sets of vent holes (23) are respectively arranged on the plurality of sets of fan blades (17).

6. An ultra-low nitrogen burner as claimed in claim 5, further comprising a fixing ring (18) and a mounting seat (19), wherein the fixing ring (18) is fixed outside the ignition gun (3) in a sleeving manner, two ends of the mounting seat (19) are respectively connected with the fixing ring (18) and the outer wall of the gas bag (4), and one end of the ignition gun (3) penetrates through the adjacent group of vent holes (23).

7. An ultra-low nitrogen burner as set forth in claim 1, characterized in that the mixer comprises a plurality of groups of flow dividing pipes (20) and an annular mixing seat (21), both ends of the plurality of groups of flow dividing pipes (20) are respectively connected with the gas bag (4) and the annular mixing seat (21), the annular mixing seat (21) is hollow inside, an annular gas outlet is arranged on the inner wall of the annular mixing seat (21), and a plurality of groups of gas outlet holes (24) are respectively arranged on the tail portion and the outer side wall of the annular mixing seat (21).

8. An ultra-low nitrogen burner as claimed in claim 1, characterized in that the edge region of the tail of the flame tube (5) is provided with a slope, and the slope angle is 142 degrees, and the tail of the flame tube (5) is provided with a multi-component flow hole (25).