CN201190996Y

CN201190996Y - Combined gas burner

Info

Publication number: CN201190996Y
Application number: CNU2008200321360U
Authority: CN
Inventors: 李英; 李俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-13
Filing date: 2008-03-13
Publication date: 2009-02-04
Anticipated expiration: 2018-03-13

Abstract

The utility model discloses a combination gas burner, comprising a premixer and a diffusion combustion device, wherein the premixer comprises an air inlet chamber and a mixing chamber, the air inlet chamber is connected with an air inlet tube provided with a first air valve, the mixing chamber is connected with an air inlet tube whose tail is provided with a gas valve, the diffusion combustion device comprises a secondary air inlet chamber, a gas tube and a diffusion combustion chamber, the second air inlet chamber is connected with a second air inlet tube provided with a secondary air valve, the gas tube and the second air inlet chamber are communicated with the diffusion combustion chamber, the mixing chamber via an air tube is connected with the gas tube. The utility model can realize three combustion types as premixing type, diffusion type and two-time combustion support diffusion type, via the different open sequences of the first air valve and the secondary air valve, to satisfy different combustion demands and expand the application range of the industry furnace.

Description

The combination gas burner

Technical field

The utility model relates to a kind of gas burner, specifically is a kind of combination gas burner that applies on the industrial furnace.

Background technology

At present, the gas burner of domestic and international application on industrial furnace mainly contains two kinds of combustion systems: the combustion-supporting diffusion type of diffusion type and secondary.Their burning condition is subjected to the restriction of different combustion gas compositions and combustion apparatus only to select a kind of combustion system for use, yet these two kinds of combustion systems have common shortcoming, promptly adopt burning, can't reach abundant burning, easily cause carbon monoxide, nitrogen oxidation content in the flue gas higher while mixing.If can before fuel gas buring, earlier combustion gas be pre-mixed (giving suitable proportioning according to different combustion gas compositions mixes) certainly with air, after waiting to produce flame, the burning that giving suitable air proportioning again provides secondary to help oxygen will reach good combustion efficiency on industrial furnace.Not seeing as yet on industrial furnace has premixed same diffusion type, these three kinds of gas burners that combustion system combines of the combustion-supporting diffusion type of secondary but at present.

Summary of the invention

The utility model purpose is: provide a kind of with the premixed combination gas burner that combines with diffusion type, three kinds of combustion systems of the combustion-supporting diffusion type of secondary, can before fuel gas buring, earlier combustion gas and air be pre-mixed, after waiting to produce flame, give the burning that suitable air proportioning provides secondary to help oxygen again, to reach good combustion efficiency.

The technical solution of the utility model is: a kind of combination gas burner, and it comprises pre-mixing apparatus and diffusion type burner, described pre-mixing apparatus comprises air-inlet cavity and hybrid chamber; Connect blast pipe on the air-inlet cavity, air-valve is installed on the blast pipe one time, hybrid chamber connects air inlet pipe, and the pipe tail of air inlet pipe is equipped with gas valve; The diffusion type burner comprises second air-inlet cavity, Gas Pipe and diffusion burner; Connect second blast pipe on second air-inlet cavity, the secondary air-valve is installed on second blast pipe, the described Gas Pipe and second air-inlet cavity are communicated with diffusion burner respectively; Hybrid chamber connects Gas Pipe through snorkel.

The technical scheme that the utility model is comparatively detailed is: a kind of combination gas burner, and it comprises pre-mixing apparatus and diffusion type burner, described pre-mixing apparatus comprises air-inlet cavity and hybrid chamber; Connect blast pipe on the air-inlet cavity, air-valve is installed on the blast pipe one time, hybrid chamber connects air inlet pipe, and the pipe tail of air inlet pipe is equipped with gas valve; The diffusion type burner comprises second air-inlet cavity, Gas Pipe and diffusion burner; Connect second blast pipe on second air-inlet cavity, the secondary air-valve is installed on second blast pipe, the described Gas Pipe and second air-inlet cavity are communicated with diffusion burner respectively; Hybrid chamber connects Gas Pipe through snorkel.Described air-inlet cavity and hybrid chamber separate by air intake plate, have some fresh air inlets on the air intake plate, and ring circumferentially is distributed with some tap holes on the tube head of described air inlet pipe.Simultaneously described Gas Pipe is arranged with the air spacer outward, and jet plate is installed between air spacer and Gas Pipe, and jet plate is second air-inlet cavity and diffusion burner, and Gas Pipe and diffusion burner cut off respectively.

The technical scheme that the utility model is more detailed is: a kind of combination gas burner, and it comprises pre-mixing apparatus and diffusion type burner, described pre-mixing apparatus comprises air-inlet cavity and hybrid chamber; Connect blast pipe on the air-inlet cavity, air-valve is installed on the blast pipe one time, hybrid chamber connects air inlet pipe, and the pipe tail of air inlet pipe is equipped with gas valve; The diffusion type burner comprises second air-inlet cavity, Gas Pipe and diffusion burner; Connect second blast pipe on second air-inlet cavity, the secondary air-valve is installed on second blast pipe, the described Gas Pipe and second air-inlet cavity are communicated with diffusion burner respectively; Hybrid chamber connects Gas Pipe through snorkel.Described air-inlet cavity and hybrid chamber separate by air intake plate, have some fresh air inlets on the air intake plate, and described fresh air inlet is a whirl hole; And ring circumferentially is distributed with some tap holes on the tube head of described air inlet pipe, and the axis normal of the axis of tap hole and fresh air inlet.Simultaneously described Gas Pipe is arranged with the air spacer outward, and jet plate is installed between air spacer and Gas Pipe, and jet plate is second air-inlet cavity and diffusion burner, and Gas Pipe and diffusion burner cut off respectively.And described jet plate is the indentation backward of several fonts, the inwall of indentation part outer wall and air spacer forms the circumferential interlayer, be distributed with some exhaust vents on the interlayer, be distributed with some fumaroles and be positioned on the end face of jet plate of interlayer front end, described exhaust vent and fumarole are whirl hole.

The utility model is when concrete work, the different opening sequences that cooperate air-valve and secondary air-valve, can realize three kinds of different combustion functions: one, open air-valve, close the secondary air-valve, and open gas valve, combustion gas just enters hybrid chamber from two different pipelines with air; Wherein combustion gas sprays from tap hole by gas valve and through air inlet pipe, collide with the air of fresh air inlet from air intake plate ejection, artificial fuel gas and Air mixing gas, through snorkel, enter Gas Pipe,, realize full premix combustion by the ejection of the fumarole on jet plate ignition combustion, consequent flame is short and hard, and Fire Radiation is stronger.If two in the supply that initially reduces an air-valve, when pre-mixed gas enters Gas Pipe, open the secondary air-valve, make air by the ejection of the exhaust vent on Gas Pipe and the air spacer wall and combustion gas that from fumarole, sprays and half premixed gas effect of air, promptly under the state of combustion gas and air half premix, carry out secondary and help the oxygen burning, realize the burning of the combustion-supporting diffusion type of secondary, produce long flame thus.If industrial furnace specifically adopts side to burn, the actual air quantity that also can pass through air-valve of adjustment and secondary air-valve change hot exhaust gas volumn jet velocity and distance, and is comparatively convenient and practical.If three are opening gas valve and are sending into initial stage of combustion gas, just close air-valve all the time No. one time, and strengthen the aperture of secondary air-valve, then can reach the common diffusion type burning of current combustion device.

The whirl hole of indication is a prior art in the utility model, disclosed in the patent before the applicant, its concrete form is to diagonally distribute as the duct on air intake plate or these plate faces of jet plate, perhaps also can in normal duct, arrange oblique when the wind sheet, realize identical purpose: promptly make air or the combustion gas of passing through these ducts form cyclone, rotatablely move, accelerate the disturbance between air and combustion gas, improve their mixed effect, improve last burning quality, so the fresh air inlet in the utility model, these all adopt whirl hole exhaust vent and fumarole.

The utility model advantage is:

The utility model combination gas burner, the different opening sequences that cooperate air-valve and secondary air-valve, just can easily realize premixed, three kinds of different combustion systems of diffusion type and the combustion-supporting diffusion type of secondary, satisfy different burning demands, enlarged the scope of application of this type of industrial furnace, and compare traditional gas burner, possess following advantage simultaneously: 1, can improve flame intensity; 2, can save combustion gas, combustion gas saving rate is below 10%; 3, can reduce exhaust gas temperature; 4, can reduce capacity; 5, can reduce pernicious gases such as carbon monoxide in the flue gas and nitrogen oxide.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is the structural representation of the utility model specific embodiment;

Wherein: 1, air-inlet cavity; 2, hybrid chamber; 3, blast pipe; 4, air-valve; 5, air inlet pipe; 6, gas valve; 7, second air-inlet cavity; 8, Gas Pipe; 9, diffusion burner; 10, second blast pipe; 11, secondary air-valve; 12, snorkel; 13, air intake plate; 14, fresh air inlet; 15, tap hole; 16, air spacer; 17, jet plate; 18, interlayer; 19, exhaust vent; 20, fumarole.

The specific embodiment

Embodiment: be illustrated in figure 1 as a kind of specific embodiment of the utility model combination gas burner, it comprises pre-mixing apparatus and diffusion type burner, and described pre-mixing apparatus comprises air-inlet cavity 1 and hybrid chamber 2; Connect blast pipe 3 on the air-inlet cavity 1, air-valve 4 is installed on the blast pipe 3 one time, hybrid chamber 2 connects air inlet pipe 5, and the pipe tail of air inlet pipe 5 is equipped with gas valve 6; The diffusion type burner comprises second air-inlet cavity 7, Gas Pipe 8 and diffusion burner 9; On connection second blast pipe 10, the second blast pipes 10 secondary air-valve 11 is installed on second air-inlet cavity 7, the described Gas Pipe 8 and second air-inlet cavity 7 are communicated with diffusion burner 9 respectively; Hybrid chamber 2 connects Gas Pipe 8 through snorkel 12.

In the present embodiment, described air-inlet cavity 1 separates by air intake plate 13 with hybrid chamber 2, has some fresh air inlets 14 on the air intake plate 13, and fresh air inlet 14 is a whirl hole; And ring circumferentially is distributed with some tap holes 15 on the tube head of described air inlet pipe 5, and the axis normal of the axis of tap hole 15 and fresh air inlet 14.

Be arranged with air spacer 16 outside the described Gas Pipe 8,8 of air spacer 16 and Gas Pipe are equipped with jet plate 17, and jet plate 17 is with second air-inlet cavity 7 and diffusion burner 9, and Gas Pipe 8 is cut off respectively with diffusion burner 9.Described jet plate 17 is the indentation backward of several fonts, and the inwall of indentation part outer wall and air spacer 16 forms circumferential interlayer 18, is distributed with some exhaust vents 19 on the interlayer 18, is distributed with some fumaroles 20 and be positioned on the end face of jet plate 17 of interlayer 18 front ends.And described exhaust vent 19 and fumarole 20 are whirl hole.

Present embodiment is when concrete work, the different opening sequences that cooperate air-valve 4 and secondary air-valve 11, can realize three kinds of different combustion functions: one, open air-valve 4, close secondary air-valve 11, and open gas valve 6, combustion gas just enters hybrid chamber 2 from two different pipelines with air; Wherein combustion gas sprays from tap hole 15 by gas valve 6 and through air inlet pipe 5, collide with the air of fresh air inlet 14 ejection from air intake plate 13, artificial fuel gas and Air mixing gas, because fresh air inlet 14 is arranged for whirl hole adds the axis of tap hole 15 and the axis normal of fresh air inlet 14, is made that combustion gas and Air mixing are more abundant.Mist enters Gas Pipe 8 through snorkel 12, by the 20 ejection ignition combustions of the fumarole on the jet plate 17, realizes full premix combustion, and consequent flame is short and hard, and Fire Radiation is stronger, the flame intensity height.If two in the supply that initially reduces an air-valve 4, when pre-mixed gas enters Gas Pipe 8, open secondary air-valve 11, the exhaust vent 19 that air is passed through on Gas Pipe 8 and air spacer 16 walls 18 sprays and the combustion gas of ejection from fumarole 20 and half premixed gas effect of air, promptly under the state of combustion gas and air half premix, carry out secondary and help the oxygen burning, realize the burning of the combustion-supporting diffusion type of secondary, produce long flame thus.If industrial furnace specifically adopts side to burn, the actual air quantity of going back adjustable primary air-valve 4 and secondary air-valve 11 changes hot exhaust gas volumn jet velocity and distance, and is comparatively convenient and practical.If three are opening gas valve 6 and are sending into initial stage of combustion gas, just close air-valve 4 all the time No. one time, and strengthen the aperture of secondary air-valve 11, then can reach the common diffusion type burning of current combustion device.

The utility model combination gas burner, the different opening sequences that cooperate air-valve 4 and secondary air-valve 11, just can easily realize premixed, three kinds of different combustion systems of diffusion type and the combustion-supporting diffusion type of secondary, satisfy different burning demands, enlarged the scope of application of this type of industrial furnace, and compare traditional gas burner, possess following advantage simultaneously: 1, can improve flame intensity; 2, can save combustion gas, combustion gas saving rate is below 10%; 3, can reduce exhaust gas temperature; 4, can reduce capacity; 5, can reduce pernicious gases such as carbon monoxide in the flue gas and nitrogen oxide.

Claims

1. A combination gas burner is characterized in that: it comprises a premixing device and a diffusion type combustion device, and said premixing device comprises an air inlet chamber (1) and a mixing chamber (2); on the air inlet chamber (1) Connect to the air inlet pipe (3), the primary air valve (4) is installed on the air inlet pipe (3), the mixing chamber (2) is connected to the air inlet pipe (5), and the gas valve (6) is installed at the end of the air inlet pipe (5) ); the diffusion combustion device comprises a second air inlet chamber (7), a gas pipe (8) and a diffusion combustion chamber (9); the second air inlet chamber (7) is connected with a second air inlet pipe (10), and the second A secondary air valve (11) is installed on the air inlet pipe (10), and the gas pipe (8) and the second air inlet chamber (7) communicate with the diffusion combustion chamber (9) respectively; Air pipe (12) connects gas pipe (8).

2. The combined gas burner according to claim 1, characterized in that the air inlet chamber (1) and the mixing chamber (2) are separated by an air inlet plate (13), and the air inlet plate (13) is provided with Several air inlet holes (14).

3. The combined gas burner according to claim 2, characterized in that there are several diversion holes (15) distributed in the circumferential direction on the pipe head of the inlet pipe (5).

4. The combined gas burner according to claim 3, characterized in that the axis of the split hole (15) is perpendicular to the axis of the air inlet hole (14).

5. The combined gas burner according to claim 2, 3 or 4, characterized in that the air inlet hole (14) is a swirl hole.

6. The combined gas burner according to claim 1, characterized in that the outer casing of the gas pipe (8) is provided with an air spacer (16), and an air jet is installed between the air spacer (16) and the gas pipe (8). Plate (17), the air injection plate (17) separates the second air inlet cavity (7) from the diffusion combustion chamber (9), and the gas pipe (8) from the diffusion combustion chamber (9).

7. The combined gas burner according to claim 5, characterized in that the air injection plate (17) is indented backwards in the shape of a few characters, and the outer wall of the indented part and the inner wall of the air spacer (16) form a circumferential partition (18), some air outlet holes (19) are distributed on the interlayer (18), and some air injection holes (20) are distributed on the end face of the air jet plate (17) positioned at the front end of the interlayer (18).

8. The combined gas burner according to claim 7, characterized in that both the air outlet hole (19) and the jet hole (20) are swirl holes.