CN205535803U - Muddy gas device of combustor - Google Patents
Muddy gas device of combustor Download PDFInfo
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- CN205535803U CN205535803U CN201620103150.XU CN201620103150U CN205535803U CN 205535803 U CN205535803 U CN 205535803U CN 201620103150 U CN201620103150 U CN 201620103150U CN 205535803 U CN205535803 U CN 205535803U
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- mixing device
- air cavity
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Abstract
The utility model discloses a muddy gas device of combustor, including a mixed gas chamber, mixed gas chamber intercommunication combustor fan and lurex furnace end, the air outlet department that connects the combustor fan at mixed gas chamber sets up gas gas outlet assembly, and gas gas outlet assembly includes gas outlet duct and baffle, the gas outlet duct sets up in air outlet to gas pressure connection intercommunication with the combustor, the baffle is arranged in the air outlet of combustor fan stretches into mixed gas chamber through the gas outlet duct. The utility model discloses the length of the non - combustion zone of furnace end has effectively been shortened, it is even to realize mixing gas in the short distance, and the flame distribution is even, adaptability is very strong to the different manufacturer combustor, the widely different problem of the different burning first circumferencial direction amount of wind of machine furnace can conveniently be solved to same structure, the evenly distributed of furnace end flame has been promoted, meet the function that has the pressure release under the condition of tempering, avoid damaging the combustor fan, the incident takes place, practice thrift equipment fixing and operation space simultaneously, the cost is lowered.
Description
Technical field
This utility model belongs to gas-fired equipment technical field, is specifically related to the gas mixing device of a kind of ultralow discharged nitrous oxides combustor.
Background technology
Existing conventional boiler, be equipped with is lance-type burner, after lance-type burner transform Metal Fibre Combustion mode as, there is the special construction of metallic fiber burner so that burning and occur on the surface of metal fibre interlacement, combustion flame is short and small compact, needs i.e. can be met in less boiler furnace size, and combustion even, it is possible to the effective generation reducing NOx, the most gradually starts more and more to be applied.
The gun-type combustor transforming Metal Fibre Combustion mode as mostly is premix after blower fan, and mixed gas uniformly needs longer mixing distance.After boiler matching transform the lance-type burner of Metal Fibre Combustion mode as, uniform in order to reach mixed gas, require burner in the design process, the on-fuel mixed gas zone length of burner wants long enough, the area occupied is also corresponding big, and practical situation is that the installing space that the public places such as existing community, hotel can provide is limited, significantly limit the use of this kind of burner.And there is now the combustor of a lot of traditional gun-type combustor metallic fiber to be transformed into burners, but the perforate that general boiler connects combustor is only the biggest than the burner inner liner of original combustor little by little, according to common Metal Fibre Combustion remodeling method, it is required for strengthening this perforate, the corollary apparatus such as improved igniting fire inspection could be installed, and the mixed air cavity distance of existing combustor is longer, transformation difficulty is bigger, and run into tempering situation, can not pressure release in time, combustor blower fan may be caused to damage, security incident occurs.
Additionally, owing to tradition gun-type combustor is all the centrifugal blower used, air quantity is the most uneven in the distribution of burner inner liner (burner) circumferencial direction, particularly, different brands combustor, because of variant on Duct design, the uneven of this air quantity is also widely different, especially in the case of short distance mixes gas, common reforming mode is all difficult to solve this difficult problem.
Utility model content
This utility model solves the technical problem that and is: the mixed gas region existed for existing lance-type burner takies the limitation that size causes greatly, a kind of novel combustor gas mixing device is provided, can effectively shorten the combustion gas of burner and the mixed headroom of air, also ensure that the uniformity of mixed gas simultaneously, the strongest to the adaptation ability of different brands gun-type combustor, same structure can solve the problem that different combustor burner circumferencial direction air quantity difference is big easily, promotes being uniformly distributed of burner flame；In the case of running into tempering, it is possible to pressure release in time, it is to avoid damage combustor blower fan and security incident occurs.
This utility model adopts the following technical scheme that realization:
The gas mixing device of a kind of combustor, including the mixed air cavity 3 being connected between metallic fiber burner 1 and combustor blower fan 5；
Described mixed air cavity 3 is fixed with gas outlet assembly 31 at the air outlet 33 connecting combustor, and described gas outlet assembly 31 includes gas outlet pipe 311 and baffle plate 312；
Described gas outlet pipe 311 is fixedly installed in air outlet 33, and connects with outside gas inlet joint 4, and its gas outlet 313 is positioned at the exit of air outlet 33；
Described baffle plate 312 stretches into layout in mixed air cavity by gas outlet pipe 311 from air outlet 33.
Further, the middle part of described mixed air cavity 3 is additionally provided with mixed gas parts 32.
Preferably, described mixed gas parts 32 are plane air distribution plate or the eddy flow tray of middle part closing, and plane air distribution plate can mix gas requirement selection according to reality and carry out perforate or not perforate.
Preferably, the gas outlet of described gas outlet pipe 311 is clearance-type gas outlet or cellular type gas outlet, and described gas outlet 313 is evenly arranged along the circumference of gas outlet pipe.
Further, perforate in the middle part of described baffle plate 312, and pass perpendicularly through gas outlet pipe 311 and be fixedly installed, all gas outlets 313 on described gas outlet pipe 311 are positioned at the same side of baffle plate 312.
In this utility model, described mixed air cavity 3 one side end face is provided with some pressure relief vents 34, is closed state under described pressure relief vent 34 normality.
Further; under combustor normally mixes the duty of gas firing; described pressure relief vent 34 uses aluminium foil or rubber to seal; when the phenomenons such as tempering occur such as combustor; air pressure breaks through the pressure relief vent sealed by aluminium foil or rubber; gas is drawn out to outside, reaches pressure release purpose, it is to avoid damage blower fan generation security incident.
In this utility model, described mixed air cavity 3 is the tube structure of both ends open, and its air outlet 33 one end is fixing with combustor fan outlet docks, and the other end connects combustor metallic fiber burner by adpting flange assembly 6.
Further, described adpting flange assembly 6 includes cylinder 62 and is located at two flange arrangements at cylinder two ends, and two flange arrangements connect mixed air cavity and metallic fiber burner respectively, are wherein provided with ignition electrode assembly installing hole 64 on burner adpting flange.
Preferably, described mixed air cavity 3 and cylinder 62 are the two-part double shell that coaxial one is connected, axial direction the different cylinder of the two-section diameter that connects forms.
After the air that this utility model uses technique scheme to be blasted by combustor blower fan enters mixed air cavity, flow-disturbing effect is there is under the effect of baffle plate, gas outlet pipe is set in air outlet position simultaneously, blast combustion gas, under the flow-disturbing effect of air-flow, realizing combustion gas and air quickly mixes, the metallic fiber burner that can send into combustor in short distance space burns.End face at mixed air cavity arranges pressure relief vent, in the case of there is tempering, can quickly be discharged by the combustion gas mixing gas in mixed air cavity.
And, this utility model is used to solve a tradition gun-type combustor difficult problem in metal fiber burner transformation process, carry out in the air mixing process gas mixed chamber of the present utility model of combustor, burner is connected with mixed air cavity by adpting flange assembly, and relatively small burner size can be used to meet the requirement not changing burner hearth perforate.Through practice test, the combustor of this utility model transformation not only mixes gas excellent effect, install and compare with tradition gun-type combustor, the length increased is the least, general on-the-spot space, place can meet transformation requirement, and meanwhile, any variation do not made by boiler, site operation is simple, low cost, is welcome by Subscriber Unit.
From the above mentioned, this utility model has and has the beneficial effect that: this utility model simple in construction, easy for installation, on the premise of ensureing mixed effect, it is effectively shortened the length in burner non-burning region, mixed gas can be realized uniform in short distance, same structure solves the problem that different brands combustor burner circumferencial direction air quantity difference is big, promote being uniformly distributed of burner flame, the purpose of pressure release can be reached in the case of running into tempering, it is to avoid damage blower fan, security incident occurs, save equipment installation and operation space simultaneously, reduce cost.
Below in conjunction with the drawings and specific embodiments, this utility model is described further.
Accompanying drawing explanation
Fig. 1 is the combustor overall schematic in embodiment.
Fig. 2 is the mixed air cavity sectional view in embodiment.
Fig. 3 is the outside schematic diagram of the mixed air cavity in embodiment.
Fig. 4 a is the position relationship schematic diagram of the gas outlet assembly in embodiment 1 and baffle plate.
Fig. 4 b is the circulation schematic diagram of the combustion gas in embodiment 1 and air.
Fig. 5 a is the position relationship schematic diagram of the gas outlet assembly in embodiment 2 and baffle plate.
Fig. 5 b is the circulation schematic diagram of the combustion gas in embodiment 2 and air.
Fig. 6 a is to use air distribution plate as the schematic diagram of mixed gas parts in embodiment.
Fig. 6 b is to use eddy flow tray as the schematic diagram of mixed gas parts in embodiment.
Fig. 7 is the adpting flange modular construction schematic diagram in embodiment 1 or embodiment 2.
Fig. 8 is adpting flange assembly and the structural representation of mixed air cavity in embodiment 3.
Fig. 9 is combustor overall schematic in embodiment 3.
Figure 10 a, 10b are the combustion efficiency (flame distribution is irregular) of existing combustor.
Figure 11 a, 11b are the combustion efficiency (flame distribution is uniform) using combustor of the present utility model.
Label in figure: 1-metallic fiber burner, 2-ignition electrode assembly, 3-mixes air cavity, 31-gas outlet assembly, 311-gas outlet pipe, 312-baffle plate, 313-gas outlet, 32-mixes gas parts, 33-air outlet, 34-pressure relief vent, 4-gas inlet joint, 5-combustor blower fan, 6-adpting flange assembly, 61-mixes air cavity adpting flange, 62-cylinder, 63-burner adpting flange, 64-ignition electrode assembly connecting hole.
Detailed description of the invention
Embodiment 1
See Fig. 1, it is illustrated that in combustor include metallic fiber burner 1, ignition electrode assembly 2, mixed air cavity 3, gas inlet joint 4, combustor blower fan 5 etc., the combustor in the present embodiment is gun-type combustor, and its combustor burner 1 uses metallic fiber burner.The metallic fiber burner 1 of combustor is connected with the gas outlet of mixed air cavity 3 by Flange joint, gas inlet joint 4 connects the gas outlet assembly in mixed air cavity 3, ignition electrode assembly 2 is installed in the metallic fiber net surface of combustor burner, and the air inlet of mixed air cavity 3 then air outlet with combustor blower fan 5 is connected.
In conjunction with seeing Fig. 2 and Fig. 3, the gas mixing device of the present embodiment is arranged in mixed air cavity 3, mixed air cavity 3 is cylindrical tube structure, end connects combustor metallic fiber burner by adpting flange assembly, mixed air cavity connection combustor blower fan and metallic fiber burner, connecting at mixed air cavity 3 and arrange gas outlet assembly 31 at the air outlet 33 of combustor blower fan, gas outlet assembly 31 includes gas outlet pipe 311 and baffle plate 312；Gas outlet pipe 311 is fixedly installed in air outlet 33, and connects with outside gas inlet joint 4, and its gas outlet 313 is positioned at the exit of air outlet 33；Baffle plate 312 stretches into layout in mixed air cavity by gas outlet pipe 311 from air outlet 33.
The most as shown in Figure 3, it is provided with some pressure relief vents 34 towards the side end face in that face of boiler at mixed air cavity 3, pressure relief vent 34 normality can use aluminium foil or rubber to seal down, when there is tempering phenomenon in combustor, air pressure breaks through the pressure relief vent sealed by aluminium foil or rubber, the mixed air cavity internal pressure of release, it is to avoid occur the most dangerous.
Such as Fig. 4 a, shown in 4b, perforate in the middle part of baffle plate 312, and pass perpendicularly through gas outlet pipe 311 and be fixedly installed, in the present embodiment, the baffle plate 312 of gas outlet assembly is positioned at the rear end, position, gas outlet of gas outlet pipe 311, all of gas port is separated with air outlet 33 by baffle plate, it is positioned at the axial arranged gas outlet of gas outlet pipe 311 313 and can use clearance-type gas outlet, i.e. axially arranged some gaps in the end of gas outlet pipe 311, in the present embodiment, the air blasted from combustor blower fan enters mixed air cavity after needing to walk around baffle plate 312, the air that the air outlet of mixed air cavity 3 is passed through is carried out disturbance by baffle plate 312, after air flows around baffle plate, the combustion gas being passed through with baffle plate rear effectively mixes.
Embodiment 2
In conjunction with seeing Fig. 5 a, Fig. 5 b, the present embodiment is with the difference of embodiment 1, in diagram, the baffle plate 312 of gas outlet assembly is positioned at the front end, gas outlet 313 position of gas outlet pipe 311, all of gas outlet 313 and air outlet 33 are positioned at the same side of baffle plate 312, gas outlet 313 in the present embodiment uses Kong Shi gas outlet, in the same circumference of gas outlet pipeline, i.e. uniformly offer some circular holes, the air and the combustion gas that are thered is provided by combustor blower fan and gas inlet joint respectively mix before baffle plate, then unification is carried out flow-disturbing by baffle plate, quickly it is formed with the uniform mixing gas mixture beneficially burnt.
The interchangeable adjustment of gas outlet mode in the present embodiment and embodiment 1.
Further, it is additionally provided with mixed gas parts 32 at the middle part of mixed air cavity 3, gaseous mixture through baffle plate flow-disturbing quickly can be distributed under the effect further of mixed gas parts, can be mixed thoroughly after entering combustor metallic fiber burner burner, mixed gas parts 32 can use the eddy flow tray that the plane air distribution plate shown in Fig. 6 a or the middle part shown in Fig. 6 b are closed, air distribution plate can mix gas requirement according to reality and offer some qi-emitting holes on circular flat board, also can not perforate, eddy flow tray then middle part is closed, and periphery has some evenly distributed swirl vanes.
nullIn embodiment 1 and embodiment 2，Mixed air cavity 3 is the tube structure of both ends open，The concretely cylindrical tube shown in Fig. 1，Air outlet 33 one end of mixed air cavity is fixing with combustor fan outlet docks，Mixed air cavity can be directly anchored on combustor fan outlet，The other end of mixed air cavity connects combustor metallic fiber burner 1 by the adpting flange assembly 6 shown in Fig. 7，Adpting flange assembly 6 includes cylinder 62 and is respectively welded mixed air cavity adpting flange 61 and the burner adpting flange 63 being fixed on cylinder two ends，Respectively by integral by Flange joint to mixed air cavity and metallic fiber burner，On burner adpting flange 63, wherein it is provided with ignition electrode assembly installing hole 64，Ignition electrode assembly installing hole should penetrate flange corresponding on flange and burner，For being fixedly installed the ignition electrode assembly 2 on combustor metallic fiber burner.
Embodiment 3
See Fig. 8 and Fig. 9, the present embodiment is with embodiment difference before, mixed air cavity 3 in the present embodiment and the two-part double shell that cylinder 62 is that coaxial one is connected, the different cylinder of the two-section diameter that connected by axial direction forms, the cylinder of mixed air cavity is fixedly connected on the air outlet of combustor blower fan by Flange joint, internal gas mixing device refers to embodiment 1 and embodiment 2 is arranged, cylinder one end welding burner adpting flange 63 of adpting flange assembly.Present embodiments provide a kind of the simplified mode, an adpting flange, the situation that applicable ignition electrode is shorter can be saved.
See Figure 10 a, 10b, it is illustrated that in be respectively existing combustor burner combustion efficiency figure, its flame is dark in the inlet end position of burner, is presented as that burning is insufficient, and its reason is that mixed gas herein is incomplete, and mixed gas can not be burnt completely.In conjunction with seeing Figure 11 a, 11b, diagram respectively uses the combustion efficiency figure of the combustor metal burner of gas mixing device of the present utility model, substantially can be seen that the flame distribution of whole burner is uniform, and the flame in burner inlet end position becomes clear, mixed gas burning fully, thus can obtain, and this utility model is while the non-burning reducing burner connection mixes the distance of headroom, effectively improve the combustion efficiency of burner further, improve the efficiency of combustor.
Embodiment above describes ultimate principle of the present utility model and principal character and advantage of the present utility model, skilled person will appreciate that of the industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description, specific works principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model, this utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (10)
1. the gas mixing device of a combustor, it is characterised in that: include being connected to metallic fiber burner (1) and combustion
Mixed air cavity (3) between burning machine blower fan (5)；
Described mixed air cavity (3) is fixed with gas outlet assembly (31) at air outlet (33) place of combustor,
Described gas outlet assembly (31) includes gas outlet pipe (311) and baffle plate (312)；
Described gas outlet pipe (311) is fixedly installed in air outlet (33), and with outside combustion gas
Inlet suction port (4) connects, and its gas outlet (313) is positioned at the exit of air outlet (33)；
Described baffle plate (312) stretches into mixed air cavity by gas outlet pipe (311) from air outlet (33)
Interior layout.
The gas mixing device of a kind of combustor the most according to claim 1, the middle part of described mixed air cavity (3) is also
It is provided with mixed gas parts (32).
The gas mixing device of a kind of combustor the most according to claim 2, described mixed gas parts (32) are plane
The eddy flow tray that air distribution plate or middle part are closed.
The gas mixing device of a kind of combustor the most according to claim 3, described gas outlet pipe (311)
Gas outlet (313) is clearance-type gas outlet or cellular type gas outlet, described gas outlet opening's edge gas outlet
The circumference of pipe is evenly arranged.
The gas mixing device of a kind of combustor the most according to claim 3, described baffle plate (312) middle part perforate,
And pass perpendicularly through gas outlet pipe (311) and be fixedly installed, all combustions on described gas outlet pipe (311)
Gas gas outlet (313) is positioned at the same side of baffle plate (312).
6. according to the gas mixing device of a kind of combustor according to any one of claim 1-5, described mixed air cavity (3)
One side end face is provided with some pressure relief vents (34), is closed state under described pressure relief vent (34) normality.
The gas mixing device of a kind of combustor the most according to claim 6, described pressure relief vent (34) uses aluminium foil
Or rubber seals.
The gas mixing device of a kind of combustor the most according to claim 1, described mixed air cavity (3) is that two ends are opened
The tube structure of mouth, its air outlet (33) one end is fixing with combustor fan outlet docks, another
Hold and connect combustor metallic fiber burner by adpting flange assembly (6).
The gas mixing device of a kind of combustor the most according to claim 8, described adpting flange assembly (6) is wrapped
Including cylinder (62) and be located at two flange arrangements at cylinder two ends, two flange arrangements connect mixed gas respectively
Chamber and metallic fiber burner, be wherein provided with ignition electrode assembly installing hole (64) on burner adpting flange.
The gas mixing device of a kind of combustor the most according to claim 9, described mixed air cavity (3) and cylinder (62)
The two-part double shell connected for coaxial one, axial direction the different cylinder of the two-section diameter that connects forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103150.XU CN205535803U (en) | 2016-02-01 | 2016-02-01 | Muddy gas device of combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103150.XU CN205535803U (en) | 2016-02-01 | 2016-02-01 | Muddy gas device of combustor |
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| CN205535803U true CN205535803U (en) | 2016-08-31 |
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| CN201620103150.XU Active CN205535803U (en) | 2016-02-01 | 2016-02-01 | Muddy gas device of combustor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526587A (en) * | 2016-02-01 | 2016-04-27 | 湖南惠同新材料股份有限公司 | Gas mixing device of burner |
| CN106642108A (en) * | 2017-01-16 | 2017-05-10 | 北京慧峰仁和科技股份有限公司 | Metal fiber surface combustor for gas-fired boiler |
| CN107091476A (en) * | 2017-06-30 | 2017-08-25 | 烟台众德环保设备科技有限公司 | A kind of gas burner and gas furnace |
| CN110296319A (en) * | 2019-07-24 | 2019-10-01 | 中国海洋石油集团有限公司 | A kind of LNG receiving station BOG electricity generation system |
-
2016
- 2016-02-01 CN CN201620103150.XU patent/CN205535803U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526587A (en) * | 2016-02-01 | 2016-04-27 | 湖南惠同新材料股份有限公司 | Gas mixing device of burner |
| CN106642108A (en) * | 2017-01-16 | 2017-05-10 | 北京慧峰仁和科技股份有限公司 | Metal fiber surface combustor for gas-fired boiler |
| CN107091476A (en) * | 2017-06-30 | 2017-08-25 | 烟台众德环保设备科技有限公司 | A kind of gas burner and gas furnace |
| CN110296319A (en) * | 2019-07-24 | 2019-10-01 | 中国海洋石油集团有限公司 | A kind of LNG receiving station BOG electricity generation system |
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