CN201916903U - Fire-retardant low-concentration gas combustor - Google Patents
Fire-retardant low-concentration gas combustor Download PDFInfo
- Publication number
- CN201916903U CN201916903U CN 201120025847 CN201120025847U CN201916903U CN 201916903 U CN201916903 U CN 201916903U CN 201120025847 CN201120025847 CN 201120025847 CN 201120025847 U CN201120025847 U CN 201120025847U CN 201916903 U CN201916903 U CN 201916903U
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- fire
- layer
- low concentration
- end cover
- concentration gas
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Abstract
The utility model discloses a fire-retardant low-concentration gas combustor, which comprises a combusting barrel, a gas inlet pipe and an ignition device. The combusting barrel comprises a barrel body in a multi-layer structure, an upper end cap and a lower end cap, wherein the upper end cap and the lower end cap are respectively arranged on an upper end face and a lower end face of the barrel body and connected with the barrel body closely. A supporting layer, a fire-retardant layer, a splitter plate layer and a combusting layer are sequentially arranged from inside to outside of the barrel body, the supporting layer is used for supporting the fire-retardant layer, the fire-retardant layer and the combusting layer is made from multi-layer metal fiber fabrics or metal fiber sintering felt, and the splitter plate layer is provided with a plurality of spitting channels which are distributed uniformly and used for communicating the fire-retardant layer with the combusting layer and used for supporting the whole combusting barrel. The combustor utilizes the combusting barrel in the multi-layer structure, the fire-retardant layer and the combusting layer are made of metal fibers, and accordingly the gas combustor is better in backfire-proofing effect and faster in cooling, and safety in low-concentration gas combustion is guaranteed better.
Description
Technical field
The utility model relates to the safety of coal mines field, particularly a kind of fire-proof type burner of the low concentration gas that is used to burn.
Background technology
At present, the methane gas that most of mines are extracted out all adopts pipeline to carry, and the output of pipeline connects the user, because the gas density that major part is extracted out is lower than 30%, the gas in the pipeline is met the easy burning of fire and produced blast, promptly has certain potential safety hazard.
The high concentration gas of extracting out need utilize usually, and the need that can not utilize adopt burner to burn, and forbid direct discharging, to avoid pollutant atmosphere.But cross the low concentration gas of low and entrained air for discharge pressure, the probability that occurs tempering when burning is very big, has big potential safety hazard, so all directly emptyings cause bigger pollution to atmospheric environment.Be the tempering that the gas combustion that prevents to export produces, need development can effectively prevent the burner of tempering, guarantee gas explosion can not take place in the conveyance conduit.
Summary of the invention
In view of this, the purpose of this utility model provides a kind of fire-proof type low concentration gas burner, can also play the back-fire relief effect when realizing combustion function, thereby improved the security of low-concentration methane gas burning, simultaneously easy for installation, easy to manufacture.
The purpose of this utility model is achieved through the following technical solutions:
Fire-proof type low concentration gas burner of the present utility model, comprise combustion barrel, described combustion barrel comprises the stack shell of sandwich construction and is separately positioned on the upper and lower end face of stack shell and close-connected upper end cover of stack shell and bottom end cover, described stack shell is followed successively by supporting layer, flame retardant bed, shunting flaggy and burning zone from inside to outside, described supporting layer is the paliform structure that refractory metal material is made, and is used to support the metallic fiber of flame retardant bed;
Described flame retardant bed and burning zone adopt metal fibre interlacement or metallic fiber sintered felt;
Described shunting flaggy adopts stainless steel material to make, and along cylindrical shell radially, described shunting flaggy is provided with numerous equally distributed shunting ducts that are used to be communicated with flame retardant bed and burning zone;
Described burner also comprises gas inlet pipeline and igniter, and described gas inlet pipeline and combustion barrel intracavity inter-connection are used for low concentration gas is imported the combustion barrel inner chamber; Described igniter is arranged on the combustion barrel outside, is used to light the low concentration gas of overflowing from the combustion barrel inner chamber.
Further, described bottom end cover is provided with the through hole that connects the combustion barrel inner chamber, and described gas inlet pipeline is by through hole and combustion barrel intracavity inter-connection;
Further, described upper end cover adopts the single layer structure that resistant to elevated temperatures metal material is made;
Another kind of design as upper end cover, described upper end cover can also adopt sandwich construction, be that described upper end cover is followed successively by supporting layer, flame retardant bed, shunting flaggy and burning zone from the bottom to top, the supporting layer of described upper end cover, flame retardant bed, shunting flaggy and burning zone have identical material and structure with supporting layer, flame retardant bed, shunting flaggy and the burning zone of stack shell respectively, and correspondence is made as one;
Further, described igniter is arranged on the below of bottom end cover;
Further, described burner also comprises flame detecting device, and described flame detecting device is arranged on the below of bottom end cover;
Further, described gas inlet pipeline is provided with flow control valve, is used to control the flow of the low-concentration methane gas that enters the combustion barrel inner chamber;
Further, described gas inlet pipeline and bottom end cover are made one;
Further, described supporting layer is the refractory metal skeleton, is preferably stainless steel material and makes;
Further, described shunting flaggy is resistant to elevated temperatures porous metals mesh plate;
Further, the stack shell profile of described combustion barrel is cylindrical shape, square body shape, bullet shape or spindle shape.
The beneficial effects of the utility model are:
1. the utility model adopts metal fibre interlacement as combustion carrier, because metal fibre interlacement has special loose structure and good heat conductivity, can prevent tempering effectively, realizes the safe combustion of low concentration gas; Metal fibre interlacement also has good thermal shock resistance and mechanical shock resistance, can cool off fast, and thermal inertia is little, thereby the thermal efficiency height of this burner; Pollutant emission is low, can effectively reduce the NOx discharging in the flue gas;
2. than more existing employing metal fiber burners, the utility model adopts the combustion barrel structure of dual safety guarantee function, wherein flame retardant bed and burning zone all adopt multiple layer metal fabric or metallic fiber sintered felt to make, when the flame of gas combustion generation passes burning zone, metallic fiber is cooled to the fray-out of flame temperature rapidly with high-temperature gas, if can't all reduce to the fray-out of flame temperature, when flame passes flame retardant bed, metallic fiber is cooled to the fray-out of flame temperature once more with flame, flame is extinguished automatically, its anti-backfire better effects if, cooling velocity is faster, more can ensure combustion completion;
3. be provided with the shunting flaggy between flame retardant bed of the present utility model and the burning zone, this shunting flaggy can make methane gas by the combustion barrel inner chamber in the process that burning zone moves, distribution of gas on each combustion front is tending towards even with flowing, burning zone can not produce because of the too concentrated superelevation warm spot that causes of gas combustion, thereby can prolong the service life of burning zone, save use cost; Simultaneously, the shunting flaggy can also play the effect of supporting burner body, raising device intensity;
4. upper end cover of the present utility model not only can adopt single layer structure, can also adopt sandwich construction, makes one with stack shell, can increase the burning area of burning zone, helps improving the efficiency of combustion of methane gas.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, take a hint to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by following specification and claims.
Description of drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:
Fig. 1 is an external structure schematic diagram of the present utility model;
Fig. 2 is a cross-sectional view of the present utility model.
The specific embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only for the utility model is described, rather than in order to limit protection domain of the present utility model.
Embodiment one
As shown in the figure, fire-proof type low concentration gas burner of the present utility model comprises combustion barrel 1, combustion barrel 1 comprise the stack shell 9 of sandwich construction and be separately positioned on the upper and lower end face of stack shell and with close-connected upper end cover 11 of stack shell and bottom end cover 12, stack shell 9 is followed successively by supporting layer 2, flame retardant bed 3, shunting flaggy 4 and burning zone 5 from inside to outside.In the present embodiment, the single layer structure that upper end cover 11 adopts resistant to elevated temperatures metal material to make.
Wherein, the paliform structure that supporting layer 2 can adopt resistant to elevated temperatures metal material to make its role is to support the metallic fiber of flame retardant bed, and in the present embodiment, the paliform structure that supporting layer adopts resistant to elevated temperatures metal material to make is preferably stainless steel material;
Flame retardant bed 3 and burning zone 5 adopt metal fibre interlacement or metallic fiber sintered felt;
Shunting flaggy 4 adopts refractory material to make, and along cylindrical shell radially, is provided with numerous equally distributed split channels that are used to be communicated with flame retardant bed 2 and burning zone 5; Described shunting flaggy 4 is the refractory metal mesh plate.In the present embodiment, shunting flaggy 4 is the refractory metal mesh plate, is preferably the stainless (steel) wire orifice plate.
Burner also comprises gas inlet pipeline 6 and igniter 7, and gas inlet pipeline 6 and combustion barrel 1 intracavity inter-connection are used for low concentration gas is imported the combustion barrel inner chamber; Igniter 7 is arranged on combustion barrel 1 outside, is used to light the low concentration gas of overflowing from the combustion barrel inner chamber.
In the present embodiment, bottom end cover 12 is provided with the through hole that connects the combustion barrel inner chamber, and described gas inlet pipeline 6 is by through hole and combustion barrel intracavity inter-connection, and certainly, in reality was made, gas inlet pipeline 6 can be made one with bottom end cover 12; Igniter 7 is arranged on the below of bottom end cover 12, adopts ignitor as igniter in the present embodiment.
As further improvement, burner also comprises flame detecting device 8, and flame detecting device 8 is arranged on the below of bottom end cover 12, its role is to flame detection temperature, combustion parameter etc., is convenient to understand the combustion case of methane gas.
As further improvement, gas inlet pipeline 6 is provided with flow control valve, is used to control the flow of the low-concentration methane gas that enters the combustion barrel inner chamber.
The stack shell profile of combustion barrel 1 of the present utility model can be made for cylindrical shape, square shape, cone shape or spindle shape, wherein, make cylindrical shape or the spindle shape has bigger burning area, be easy to simultaneously make, the burning that helps gas is even, improves efficiency of combustion.
Embodiment two
The difference of present embodiment and embodiment one is: upper end cover 11 is sandwich construction, be followed successively by supporting layer, flame retardant bed, shunting flaggy and burning zone from the bottom to top, the supporting layer of described upper end cover, flame retardant bed, shunting flaggy and burning zone have identical material and structure with supporting layer 2, flame retardant bed 3, shunting flaggy 4 and the burning zone 5 of stack shell respectively, and correspondence is made as one.Promptly among this embodiment, the supporting layer 2 of stack shell, flame retardant bed 3, shunting flaggy 4 and burning zone 5 have all adopted the structure of similar one deck parcel one deck up with on the side, can increase the burning area of burning zone, help improving the efficiency of combustion of methane gas.
This fire-proof type low concentration gas burner adopts metal fibre interlacement or metallic fiber sintered felt as combustion carrier, because metal fibre interlacement has special loose structure and good heat conductivity, can prevent tempering effectively, realize the safe combustion of low concentration gas, metal fibre interlacement also has good thermal shock resistance and mechanical shock resistance, can cool off fast, thermal inertia is little.Thereby the thermal efficiency height of this burner; Pollutant emission is low, can effectively reduce the NOx discharging in the flue gas.
The utility model reaches 5W/ mm owing to adopted special structural design in the burner surface calorific intensity
2The time, can not take off fire yet.
The utility model can solve detonation concentration gas can not the safe combustion technical barrier, is particularly suitable for the occasion of coal mine light concentration mash gas safety burning, also is suitable for the burning occasion of other fuel gas that explosion danger is arranged.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1. fire-proof type low concentration gas burner, it is characterized in that: described burner comprises combustion barrel (1), described combustion barrel (1) comprises the stack shell (9) of sandwich construction and is separately positioned on the upper and lower end face of stack shell and close-connected upper end cover of stack shell (11) and bottom end cover (12), described stack shell (9) is followed successively by supporting layer (2), flame retardant bed (3), shunting flaggy (4) and burning zone (5) from inside to outside, the paliform structure that described supporting layer (2) is made for refractory metal material is used to support flame retardant bed;
Described flame retardant bed (3) and burning zone (5) adopt multiple layer metal fabric or metallic fiber sintered felt;
Described shunting flaggy (4) adopts stainless steel material to make, along cylindrical shell radially, described shunting flaggy (4) is provided with numerous equally distributed shunting ducts that are used to be communicated with flame retardant bed (2) and burning zone (5), and flow distribution plate also works to support whole combustion barrel;
Described burner also comprises gas inlet pipeline (6) and igniter (7), and described gas inlet pipeline (6) and combustion barrel (1) intracavity inter-connection are used for low concentration gas is imported the combustion barrel inner chamber; Described igniter (7) is arranged on combustion barrel (1) outside, is used to light the low concentration gas of overflowing from the combustion barrel inner chamber.
2. fire-proof type low concentration gas burner according to claim 1 is characterized in that: described bottom end cover (12) is provided with the through hole that connects the combustion barrel inner chamber, and described gas inlet pipeline (6) is by through hole and combustion barrel intracavity inter-connection.
3. fire-proof type low concentration gas burner according to claim 1 and 2 is characterized in that: the single layer structure that described upper end cover (11) adopts resistant to elevated temperatures metal material to make.
4. fire-proof type low concentration gas burner according to claim 1 and 2, it is characterized in that: described upper end cover is a sandwich construction, described upper end cover is connected with burning zone (5) with the shunting flaggy (4) of burning stack shell, be followed successively by supporting layer, flame retardant bed, shunting flaggy and burning zone from the bottom to top, the supporting layer of described upper end cover, flame retardant bed, shunting flaggy and burning zone have identical material and structure with supporting layer (2), flame retardant bed (3), shunting flaggy (4) and the burning zone (5) of stack shell respectively, and correspondence is made as one.
5. fire-proof type low concentration gas burner according to claim 1 and 2 is characterized in that: described igniter (7) is arranged on the below of bottom end cover (12).
6. fire-proof type low concentration gas burner according to claim 1 and 2 is characterized in that: described burner also comprises flame detecting device (8), and described flame detecting device (8) is arranged on the below of bottom end cover (12).
7. fire-proof type low concentration gas burner according to claim 1 is characterized in that: described gas inlet pipeline (6) is provided with flow control valve, is used to control the flow of the low-concentration methane gas that enters the combustion barrel inner chamber.
8. fire-proof type low concentration gas burner according to claim 2 is characterized in that: described gas inlet pipeline (6) is made one with bottom end cover (12).
9. fire-proof type low concentration gas burner according to claim 1 is characterized in that: described shunting flaggy (4) is resistant to elevated temperatures expanded metal.
10. fire-proof type low concentration gas burner according to claim 1 is characterized in that: the stack shell profile of described combustion barrel (1) is cylindrical shape, square body shape, bullet shape or spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120025847 CN201916903U (en) | 2011-01-26 | 2011-01-26 | Fire-retardant low-concentration gas combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120025847 CN201916903U (en) | 2011-01-26 | 2011-01-26 | Fire-retardant low-concentration gas combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201916903U true CN201916903U (en) | 2011-08-03 |
Family
ID=44416698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120025847 Expired - Lifetime CN201916903U (en) | 2011-01-26 | 2011-01-26 | Fire-retardant low-concentration gas combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201916903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080824A (en) * | 2011-01-26 | 2011-06-01 | 煤炭科学研究总院重庆研究院 | Fire-retardant low concentration gas burner |
| CN103742906A (en) * | 2013-12-30 | 2014-04-23 | 重庆广播电视大学 | Sleeve type gas combustor with electronic ignition device |
-
2011
- 2011-01-26 CN CN 201120025847 patent/CN201916903U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080824A (en) * | 2011-01-26 | 2011-06-01 | 煤炭科学研究总院重庆研究院 | Fire-retardant low concentration gas burner |
| CN102080824B (en) * | 2011-01-26 | 2012-08-01 | 煤炭科学研究总院重庆研究院 | Fire-retardant low concentration gas burner |
| CN103742906A (en) * | 2013-12-30 | 2014-04-23 | 重庆广播电视大学 | Sleeve type gas combustor with electronic ignition device |
| CN103742906B (en) * | 2013-12-30 | 2016-03-30 | 重庆广播电视大学 | Adopt the telescopic nondestructive inspection gas burner of electronic ignition device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110803 Effective date of abandoning: 20120801 |