CN102080824A - Fire-retardant low concentration gas burner - Google Patents
Fire-retardant low concentration gas burner Download PDFInfo
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- CN102080824A CN102080824A CN 201110028301 CN201110028301A CN102080824A CN 102080824 A CN102080824 A CN 102080824A CN 201110028301 CN201110028301 CN 201110028301 CN 201110028301 A CN201110028301 A CN 201110028301A CN 102080824 A CN102080824 A CN 102080824A
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Abstract
The invention discloses a fire-retardant low concentration gas burner, which comprises a combustor. The combustor comprises a combustor body with a multi-layer structure, and an upper end cover and a lower end cover which are arranged on the upper end and lower end of the combustor body respectively and are closely connected with the combustor body. The combustor body has a supporting layer, a fire-retardant layer, a diversion plate layer and a burning layer from inside to outside in turn. The supporting layer is used for supporting the fire-retardant layer; the fire-retardant layer and the burning layer are made of multi-layer metal fabric or metal fiber sintered felt; the diversion plate layer is provided with a plurality of uniformly distributed diversion channels for communicating the fire-retardant layer and the burning layer, and the diversion plate layer also plays a role in supporting the whole combustor; the burner further comprises a gas inlet pipeline and an ignition device. In the invention, a combustor structure with multi-layer structure is adopted, wherein the fire-retardant layer and the burning layer are made of metal fibers, thereby ensuring a better tempering effect, a higher cooling speed and higher safety of burning of low concentration gas.
Description
Technical field
The present invention relates to the safety of coal mines field, particularly a kind of fire-proof type nondestructive inspection gas burner that is used for the safe combustion low concentration gas.
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 invention is to provide a kind of fire-proof type low concentration gas burner, can when realizing combustion function, can also play the back-fire relief effect, thereby improved the security of low-concentration methane gas burning, simultaneously easy for installation, easy to manufacture.
The objective of the invention is to be achieved through the following technical solutions:
Fire-proof type low concentration gas burner of the present invention, 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 invention has the beneficial effects as follows:
1. the present invention 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 present invention 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 invention 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 invention 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 invention, 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 take a hint from the practice of the present invention to investigating hereinafter.Target of the present invention and other advantages can realize and obtain by following specification and claims.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is an external structure schematic diagram of the present invention;
Fig. 2 is a cross-sectional view of the present invention.
The specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only for the present invention is described, rather than in order to limit protection scope of the present invention.
Embodiment one
As shown in the figure, fire-proof type low concentration gas burner of the present invention 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 invention 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 present invention reaches 5W/ mm owing to adopted special structural design in the burner surface calorific intensity
2The time, can not take off fire yet.
The present invention 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 technical scheme of the present invention to be described, although the present invention 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 technical scheme of the present invention, 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 invention.
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 shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028301 CN102080824B (en) | 2011-01-26 | 2011-01-26 | Fire-retardant low concentration gas burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028301 CN102080824B (en) | 2011-01-26 | 2011-01-26 | Fire-retardant low concentration gas burner |
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| CN102080824A true CN102080824A (en) | 2011-06-01 |
| CN102080824B CN102080824B (en) | 2012-08-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278599A (en) * | 2013-03-25 | 2013-09-04 | 广东电网公司电力科学研究院 | Low-density gas burner, burning test system and controlling method thereof |
| CN108506932A (en) * | 2017-02-27 | 2018-09-07 | 上海诺特飞博燃烧设备有限公司 | A kind of metallic fiber combustion head of large capacity multilayered structure |
| CN109945187A (en) * | 2019-03-20 | 2019-06-28 | 中国矿业大学 | A kind of low concentration gas pulsating combusting device with canalis pterygoideus |
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| JPS6262110A (en) * | 1985-09-13 | 1987-03-18 | Miura Co Ltd | Cylindrical combustion improver for surface burning made of ceramic particles |
| EP0899507A1 (en) * | 1997-08-29 | 1999-03-03 | Tokyo Gas Company Limited | A leak preventive structure for a case of a surface combustion burner |
| CN101329067A (en) * | 2008-06-26 | 2008-12-24 | 胜利油田胜利动力机械集团有限公司 | Coal mine mash gas incineration torch |
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| CN201916903U (en) * | 2011-01-26 | 2011-08-03 | 煤炭科学研究总院重庆研究院 | Fire-retardant low-concentration gas combustor |
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2011
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Patent Citations (5)
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| JPS6262110A (en) * | 1985-09-13 | 1987-03-18 | Miura Co Ltd | Cylindrical combustion improver for surface burning made of ceramic particles |
| EP0899507A1 (en) * | 1997-08-29 | 1999-03-03 | Tokyo Gas Company Limited | A leak preventive structure for a case of a surface combustion burner |
| CN101329067A (en) * | 2008-06-26 | 2008-12-24 | 胜利油田胜利动力机械集团有限公司 | Coal mine mash gas incineration torch |
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Non-Patent Citations (1)
| Title |
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| 《矿业安全与环保》 20100831 龙伍见 我国煤矿低浓度瓦斯利用技术研究现状及前景展望 第74～77页 1-10 第37卷, 第4期 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278599A (en) * | 2013-03-25 | 2013-09-04 | 广东电网公司电力科学研究院 | Low-density gas burner, burning test system and controlling method thereof |
| CN108506932A (en) * | 2017-02-27 | 2018-09-07 | 上海诺特飞博燃烧设备有限公司 | A kind of metallic fiber combustion head of large capacity multilayered structure |
| CN109945187A (en) * | 2019-03-20 | 2019-06-28 | 中国矿业大学 | A kind of low concentration gas pulsating combusting device with canalis pterygoideus |
| CN109945187B (en) * | 2019-03-20 | 2023-09-29 | 中国矿业大学 | Low-concentration gas pulsation burner with wing pipes |
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| CN102080824B (en) | 2012-08-01 |
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Owner name: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RE Free format text: FORMER NAME: COAL SCIENTIFIC RESEARCH INSTITUTE CHONGQING INSTITUTE Owner name: CHINA COAL TECHNOLOGY ENGINEERING GROUP CHONGQING Free format text: FORMER NAME: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE |
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Address after: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Patentee after: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. Address before: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Patentee before: Chongqing Institute of Coal Science Research Institute |
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Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Patentee after: CHONGQING RESEARCH INSTITUTE CO., LTD. OF CHINA COAL TECHNOLOGY & ENGINEERING Group Address before: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Patentee before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |