CN202937295U - Mine underground coal spontaneous combustion preventing and quick fire distinguishing device - Google Patents
Mine underground coal spontaneous combustion preventing and quick fire distinguishing device Download PDFInfo
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- CN202937295U CN202937295U CN 201220665278 CN201220665278U CN202937295U CN 202937295 U CN202937295 U CN 202937295U CN 201220665278 CN201220665278 CN 201220665278 CN 201220665278 U CN201220665278 U CN 201220665278U CN 202937295 U CN202937295 U CN 202937295U
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- foaming
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- compressed air
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Abstract
The utility model discloses a mine underground coal spontaneous combustion preventing and quick fire extinguishing device which comprises a barrel-shaped foaming shell body with two closing-up ends. One end of the foaming shell body is connected with a pressure pipeline. One side of the pressure pipeline is provided with a foam stock solution inlet. The other end of the foaming shell body is connected with a foam output pipeline. Six to eight groups of helical blades are arranged at intervals on a hollow shaft of an inner axis of the foaming shell body. Air outlet holes are formed between the helical blades. Included angles formed by the axial direction of the hollow shaft and rotating directions of the helical blades are 45-60 degrees. Helical blades in the same group are the same in rotating direction, and helical blades in one group are opposite to helical blades in an adjacent group in rotating direction. According to the mine underground coal spontaneous combustion preventing and quick fire distinguishing device, two times of foaming are conducted on mixing substances so that foaming times are enabled to be quickly improved to 50-150 times in short time, and the purposes of preventing coal spontaneous combustion and extinguishing fire are achieved.
Description
Technical field
The utility model relates to for control spontaneous combustionof coal and fast fire-extinguishing apparatus, in particular for control spontaneous combustionof coal and the fast fire-extinguishing apparatus under coal mine.
Background technology
Coal mine gob is left over coal freely burning fire is easily occured under certain condition, and effectively putting out way is to spray gel foam.
The foam-making apparatus that adopts at present mainly contains the net formula foam maker that fire-fighting is used, it is comprised of air compressor, pressure vessel, the gentle liquid pipeline of foaming cylinder that metal grill is housed, this foam maker needs the external connection power source, is not suitable for anti-fire extinguishing operation under coal mine.
" the three-phase froth generating means of control spontaneous combustionof coal " of the patent No. 02148411.2 China Mining University application, it comprises three-phase mixture (yellow mud or coal ash pulp and blowing agent) feed pipe, blender and is provided with the foam maker cylindrical shell of Venturi tube, be provided with polylith obstacle version in blender, the foam maker cylindrical shell is provided with the pipeline that injects Venturi tube throat, the Venturi tube periphery is provided with the space of introducing gas, the Venturi tube entrance is provided with jet regulator, and foam maker cylindrical shell afterbody is provided with the slideway that can regulate current collector; It relies on material and introduces gas in the negative pressure that Venturi tube produces, thereby produces the three-phase mixture foam, is used for the colliery and prevents and treats Conflagration Caused by Coal Self-ignition.The mixtures such as the yellow mud that this device dependence foaming is adopted, flyash are protected coal, thereby reach the effect of control spontaneous combustionof coal, its deficiency: the one, the three-phase froth that the mixtures such as yellow mud, flyash produce contains larger particles, granularity is inhomogeneous, thorough contacting of blocks air and coal in the time of can't being used for fire extinguishing; The 2nd, coefficient of foaming is lower, and 30 times of left and right are only arranged, and spontaneous combustion has certain effect to the control underground coal, can not realize the requirement of quick extinguishing under coal mine; The 3rd, this foam maker plate of will placing obstacles in blender, the processing and manufacturing process is complicated, easily produces the retardance phenomenon.
" foam maker that is used for preventing and extinguishing fire of coal mine " that the patent No. 201110067937.7 west, Xi'an Co., Ltds of the anti-fire extinguishing of section's coal mine safety ventilation research institute apply for, the stirring vane that is arranged on the blender axis is set in blender, stirring vane is that spacer sleeve is loaded on the obstruct lengthy motion picture on the blender axis and intercepts short-movie, intercept on lengthy motion picture opening is set, make and form non-directional circulation passage in blender, extended the time that mixed serum mixes in blender, mixed serum can fully be mixed.Its deficiency is: compare with the patent No. 02148411.2, the balk board in blender has been changed into the axis that intercepts lengthy motion picture and obstruct short-movie, although be difficult for plugging, mixing effect is not good enough, and the coefficient of foaming of foam is lower.
The utility model content
In view of the deficiency of prior art, it is a kind of simple in structure that the utility model provides, and coefficient of foaming is high, can be used in the device of control spontaneous combustionof coal and quick extinguishing.
Technical scheme is, a kind of colliery Mine spontaneous combustionof coal and fast fire-extinguishing apparatus, and it comprises the tubular foaming shell of a two ends reducing; One end of foaming shell is connected with compressed air line, and a side of compressed air line is provided with the foam dope entrance, and the diameter of compressed air line is greater than the diameter of foam dope entrance; The other end of foaming shell is connected with the foam output channel; Axis in foaming shell is provided with hollow shaft, be interval with 6～8 groups of helical blades on hollow shaft, be provided with venthole between helical blade, the axial angle of the rotation direction of above-mentioned helical blade and hollow shaft is 45～60 degree, the rotation direction of each group helical blade is identical, and the rotation direction of two adjacent groups is opposite; Outlet one end of foaming shell is equipped with foam screen.
In order to improve coefficient of foaming, be provided with auxiliary compressed air line in foaming shell one side, auxiliary compressed air line is connected with an end of hollow shaft.
The screen distance of above-mentioned foam screen is preferably 0.5～2mm.
Above-mentioned every group of helical blade spacing distance is preferably the hollow shaft external surface to the spacing of foaming shell inner surface.
Every group of the best of above-mentioned helical blade is three, and is the triangle layout.
the utility model operating principle is, under coal mine, down-hole Compressed Gas steam line is connected on the compressed air line and auxiliary compressed air line of the utility model device, Compressed Gas enters foaming shell inside, simultaneously in foam dope entrance generation negative pressure, suck foam dope, the preliminary mixing, mixed gas, the liquid fluid further mixes at the helical blade place, the rotation direction of adjustable screw blade, can provide different resistances to Compressed Gas and foam dope mixture, the blade of different rotation directions further strengthens stirring action, and preliminary foaming, can regulate by auxiliary compressed air line the amount of inputting Compressed Gas, thereby change foam dope coefficient of foaming on foam screen, the final exquisiteness that forms on foam screen, stable gel foam, discharge from the foam output channel.By the inlet of regulating auxiliary Compressed Gas and the aperture of selecting foam screen, can obtain the gel foam coefficient of foaming of 50～150 times.
Compared with prior art, the utility model has the advantage of:
1, due to the diameter of the compressed air line diameter greater than the foam dope entrance, in foam dope entrance generation negative pressure, make the tentatively foaming in foaming shell of Compressed Gas and foam dope mixture under the stirring of helical blade, be used for the control spontaneous combustionof coal and realize fire extinguishing.
2, make auxiliary Compressed Gas from being located at the venthole ejection on hollow shaft by the auxiliary compressed air line that arranges, mixture is carried out second time of foaming, make coefficient of foaming bring up to rapidly 50～150 times in the short time, reach the purpose of quick extinguishing.
3, the utility model does not have fiery device not want spcific power, and material is difficult for plugging, use reliably, and compact conformation, easy to maintenance, be specially adapted to the coal mine fire fighting operation.
Description of drawings
Fig. 1 is structural front view of the present utility model;
Fig. 2 is A-A profile in Fig. 1.
In figure: 1 compressed air line, 2-foam dope entrance, the 3-foaming shell, 4-foam output channel, the 5-hollow shaft, the 6-venthole, the 7-helical blade, the 8-foam screen, 9-assists compressed air line.
The specific embodiment
Below in conjunction with accompanying drawing and several embodiment, the technical solution of the utility model is described further:
Embodiment one
As depicted in figs. 1 and 2, a kind of preventing and extinguishing fire of coal mine gel foam generating means, it comprises the tubular foaming shell 3 of a two ends reducing; One end of foaming shell 3 is connected with compressed air line 1, and a side of compressed air line 1 is provided with foam dope entrance 2, and the diameter of compressed air line 1 is greater than the diameter of foam dope entrance 2; The other end of foaming shell 3 is connected with foam output channel 4; Axis in foaming shell 3 is provided with hollow shaft 5, is interval with six groups of helical blades 7 on hollow shaft 5, and spacing distance is that hollow shaft 5 external surfaces are to the spacing of foaming shell 3 inner surfaces.Be provided with venthole 6 between helical blade 7, the rotation direction of embodiment one helical blade 7 and the axial angle of hollow shaft 5 are 45 degree, and the rotation direction of each group helical blade 7 is identical, and the rotation direction of two adjacent groups helical blade 7 is opposite; Be provided with auxiliary compressed air line 9 in foaming shell 3 one sides, auxiliary compressed air line 9 is connected with an end of hollow shaft 5; Outlet one end of foaming shell 3 is equipped with foam screen 8.The screen distance of foam screen 8 is 0.5mm.
Every group of helical blade 7 in embodiment is three, and is triangle and arranges.
Down-hole Compressed Gas steam line is connected on the compressed air line 1 and auxiliary compressed air line 9 of the utility model device. and Compressed Gas enters foaming shell 3 by compressed air line 1, adjusting by auxiliary compressed air line 9, making the Compressed Gas that enters housing 3 and the flow-rate ratio of gel foam stoste is 20:1, the axial angle of the rotation direction of helical blade 7 and hollow shaft 5 is 45 degree, the gas, the liquid that pass through are fully mixed, stirring through 6 groups of helical blades 7, is the gel foam of 50 times of the rear formation of 0.5mm foam screen 8 by screen distance.
Embodiment two
Embodiment two and embodiment one are basic identical, and different is that the rotation direction of helical blade 7 and the axial angle of hollow shaft 5 are 60 degree.During use, regulate auxiliary compressed air line 9, making the Compressed Gas that enters foaming shell 3 and the flow-rate ratio of gel foam stoste is 25:1, forms the gel foam of 80 times after foaming.
Embodiment three
Embodiment three and embodiment two are basic identical, and different is to be interval with eight groups of helical blades 7 on hollow shaft 5, and the screen distance of foam screen is 2mm.During use, regulate auxiliary compressed air line 9, making the Compressed Gas that enters foaming shell 3 and the flow-rate ratio of gel foam stoste is 30:1, forms the gel foam of 120 times after foaming.
Embodiment four
Embodiment four and embodiment three are basic identical, and different is that the rotation direction of helical blade 7 and the axial angle of hollow shaft 5 are 60 degree.During use, regulate auxiliary compressed air line 9, making the Compressed Gas that enters foaming shell 3 and the flow-rate ratio of gel foam stoste is 30:1, forms the gel foam of 150 times after foaming.
Claims (4)
1. a colliery Mine spontaneous combustionof coal and fast fire-extinguishing apparatus, is characterized in that, it comprises the tubular foaming shell of a two ends reducing; One end of foaming shell is connected with compressed air line, and a side of compressed air line is provided with the foam dope entrance, and the diameter of compressed air line is greater than the diameter of foam dope entrance; The other end of foaming shell is connected with the foam output channel; Axis in foaming shell is provided with hollow shaft, be interval with 6～8 groups of helical blades on hollow shaft, be provided with venthole between helical blade, the axial angle of the rotation direction of above-mentioned helical blade and hollow shaft is 45～60 degree, the rotation direction of each group helical blade is identical, and the rotation direction of two adjacent groups is opposite; Outlet one end of foaming shell is equipped with foam screen.
2. colliery Mine spontaneous combustionof coal as claimed in claim 1 and fast fire-extinguishing apparatus, is characterized in that, is provided with auxiliary compressed air line in foaming shell one side, and auxiliary compressed air line is connected with an end of hollow shaft.
3. colliery Mine spontaneous combustionof coal as claimed in claim 1 and fast fire-extinguishing apparatus, is characterized in that, the screen distance of described foam screen is 0.5～2mm.
4. colliery Mine spontaneous combustionof coal as claimed in claim 1 and fast fire-extinguishing apparatus, is characterized in that, every group of above-mentioned helical blade is three, and be triangle and arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665278 CN202937295U (en) | 2012-12-05 | 2012-12-05 | Mine underground coal spontaneous combustion preventing and quick fire distinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665278 CN202937295U (en) | 2012-12-05 | 2012-12-05 | Mine underground coal spontaneous combustion preventing and quick fire distinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937295U true CN202937295U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220665278 Withdrawn - After Issue CN202937295U (en) | 2012-12-05 | 2012-12-05 | Mine underground coal spontaneous combustion preventing and quick fire distinguishing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202937295U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979552A (en) * | 2012-12-05 | 2013-03-20 | 山东科技大学 | Device for preventing coal from burning spontaneously and rapidly extinguishing under coal mine and working method thereof |
| CN103586981A (en) * | 2013-11-08 | 2014-02-19 | 中国矿业大学 | Mine foam slurry mixer |
| CN105275445A (en) * | 2015-11-16 | 2016-01-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Concentric pipe type foam generator |
| CN105344040A (en) * | 2013-10-10 | 2016-02-24 | 中国矿业大学 | Foam gel preparation device for preventing and controlling self-combustion of coal |
| CN108145857A (en) * | 2018-01-09 | 2018-06-12 | 厦门理工学院 | One kind sets vaned foamed concrete and mixes bulb apparatus |
| CN110115812A (en) * | 2019-04-19 | 2019-08-13 | 西安科技大学 | A kind of spiral atomization gel foam generating device |
| CN113134185A (en) * | 2020-01-20 | 2021-07-20 | 南京南瑞继保电气有限公司 | Foam generator reaches compressed air foam extinguishing device who contains it |
-
2012
- 2012-12-05 CN CN 201220665278 patent/CN202937295U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979552A (en) * | 2012-12-05 | 2013-03-20 | 山东科技大学 | Device for preventing coal from burning spontaneously and rapidly extinguishing under coal mine and working method thereof |
| CN102979552B (en) * | 2012-12-05 | 2015-04-01 | 山东科技大学 | Device for preventing coal from burning spontaneously and rapidly extinguishing under coal mine and working method thereof |
| CN105344040A (en) * | 2013-10-10 | 2016-02-24 | 中国矿业大学 | Foam gel preparation device for preventing and controlling self-combustion of coal |
| CN105344040B (en) * | 2013-10-10 | 2018-10-02 | 中国矿业大学 | A kind of frothy gel preparation facilities of prevention spontaneous combustionof coal |
| CN103586981A (en) * | 2013-11-08 | 2014-02-19 | 中国矿业大学 | Mine foam slurry mixer |
| CN105275445A (en) * | 2015-11-16 | 2016-01-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Concentric pipe type foam generator |
| CN105275445B (en) * | 2015-11-16 | 2018-10-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Concentric pipe type foam generator |
| CN108145857A (en) * | 2018-01-09 | 2018-06-12 | 厦门理工学院 | One kind sets vaned foamed concrete and mixes bulb apparatus |
| CN108145857B (en) * | 2018-01-09 | 2023-10-20 | 厦门理工学院 | Foam concrete mixing device with blades |
| CN110115812A (en) * | 2019-04-19 | 2019-08-13 | 西安科技大学 | A kind of spiral atomization gel foam generating device |
| CN113134185A (en) * | 2020-01-20 | 2021-07-20 | 南京南瑞继保电气有限公司 | Foam generator reaches compressed air foam extinguishing device who contains it |
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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: 20130515 Effective date of abandoning: 20150401 |
|
| RGAV | Abandon patent right to avoid regrant |