CN210698570U - Three-phase foam foaming device for preventing coal spontaneous combustion - Google Patents
Three-phase foam foaming device for preventing coal spontaneous combustion Download PDFInfo
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- CN210698570U CN210698570U CN201921569640.9U CN201921569640U CN210698570U CN 210698570 U CN210698570 U CN 210698570U CN 201921569640 U CN201921569640 U CN 201921569640U CN 210698570 U CN210698570 U CN 210698570U
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Abstract
The utility model discloses a three-phase foam foaming device for preventing coal spontaneous combustion, wherein a first foaming pipe is a Venturi tube, the inlet of the first foaming pipe is used for connecting a grouting pipe and is matched with a ground grouting station for use, and the outlet of the first foaming pipe is connected with the inlet of a second foaming pipe; a Venturi nozzle is arranged in the second foaming pipe, a foaming net is arranged at the outlet of the Venturi nozzle, the air outlet of the pressurizer air pipe extends between the outlet of the Venturi pipe and the inlet of the Venturi nozzle, and the air outlet faces to the inlet of the Venturi nozzle. The foaming liquid completes the first foaming at the Venturi tube, then compressed air is injected through a pressurizer, the second foaming is completed at the Venturi nozzle of the second foaming tube, and finally the third foaming is completed through a foaming net, and finally fine and compact foams are formed. To sum up, the utility model discloses can cooperate ground grout station to use, improve the foaming multiplying power of foam, the device is light, and easy operation can deal with extensive conflagration in the pit, makes things convenient for the workman in the pit to use.
Description
Technical Field
The utility model belongs to the technical field of the mine fire prevention and extinguishing, concretely relates to three-phase foam foaming device of coal spontaneous combustion prevention and control.
Background
With the vigorous popularization and application of the fully mechanized top coal caving technology, the production efficiency of the coal mine in the mining area is greatly improved, but the coal mining method has large caving height, more residual coal in the goaf and serious air leakage, so that the spontaneous combustion risk of the coal in the goaf is increased, and the method becomes one of the main factors restricting the safe production and further development of the mine. In recent years, foam fire prevention and extinguishing technology is widely adopted in the industry, coal spontaneous combustion is prevented by destroying or reducing a structure with lower reaction activation energy in a coal body, an inert gas foam is taken as a carrier, a novel inhibition material compounded by a physical inhibitor and a chemical inhibitor is brought into a large-scale goaf, and necessary factors of coal spontaneous combustion are destroyed to comprehensively prevent and control the coal spontaneous combustion.
Chinese patent CN 205042006 provides a large-scale three-phase foam foaming device for mines, which blows a solid phase into a foaming box by blowing, and then forms three-phase foam by mixing with the foam.
Disclosure of Invention
To the technical problem among the prior art, the utility model provides a three-phase foam foaming device of coal spontaneous combustion prevention and cure can cooperate the use of ground grout station, has improved the foaming multiplying power of foam, and the device is light, and easy operation can deal with extensive conflagration in the pit, makes things convenient for the workman in the pit to use.
In order to solve the technical problem, the utility model discloses a following technical scheme solves:
the three-phase foam foaming device for preventing and controlling spontaneous combustion of coal comprises a first foaming pipe, a pressurizer, an air pipe connected with the pressurizer, a second foaming pipe, a Venturi nozzle and a foaming net, wherein the first foaming pipe is a Venturi pipe, the inlet of the first foaming pipe is used for being connected with a grouting pipe, and the outlet of the first foaming pipe is connected with the inlet of the second foaming pipe; the Venturi nozzle is arranged in the second foaming pipe, and the foaming net is arranged at the outlet position of the Venturi nozzle; the tracheal gas outlet stretches into in the foaming pipe, the gas outlet be located venturi's export with between the entry of venturi nozzle, just the gas outlet orientation the entry of venturi nozzle.
The first foaming pipe is arranged at the outlet end of the first foaming pipe, the second foaming pipe is arranged at the inlet end of the second foaming pipe, one end of the flange pipe is connected with the first flange, and the other end of the flange pipe is connected with the second flange; and the air outlet of the air pipe extends into the flange pipe from the pipe wall of the flange pipe.
Further, a sealing ring is arranged between the air pipe and the pipe wall of the flange pipe.
Further, an air flow adjusting valve is arranged on the air pipe and used for controlling air pressure blown out from the air outlet.
Further, the cross section of the air outlet is conical, and the outlet end is a conical bottom.
Further, the foaming net is the hemisphere screen cloth, the export of venturi nozzle is provided with a plurality of layers the foaming net, just the concave surface orientation of foaming net the export of venturi nozzle.
Further, the air outlet of the air pipe is opposite to the inlet of the venturi nozzle.
Further, the venturi nozzle is disposed near an inlet of the second bubble generating tube.
Further, the outlet of the second foaming pipe is connected with a conduit, and the foam is injected to a position needing to be injected through the conduit.
Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model relates to a three-phase foam foaming device for preventing coal spontaneous combustion, wherein a first foaming pipe is a Venturi tube, the inlet of the first foaming pipe is used for connecting a grouting pipe and is matched with a ground grouting station for use, and the outlet of the first foaming pipe is connected with the inlet of a second foaming pipe; a Venturi nozzle is arranged in the second foaming pipe, a foaming net is arranged at the outlet of the Venturi nozzle, the air outlet of the pressurizer air pipe extends between the outlet of the Venturi pipe and the inlet of the Venturi nozzle, and the air outlet faces to the inlet of the Venturi nozzle. Such structural design need not to dilute foaming liquid and mud in the pit, and the foam process the utility model discloses can form fine and smooth, fine and close three-phase foam after the cubic foaming of device, foaming liquid is at first accomplished the foaming for the first time in venturi department promptly, then presses through the presser and annotates compressed air, accomplishes the foaming for the second time in the venturi nozzle department of second foaming pipe, accomplishes the foaming for the third time through the foaming net at last, finally forms fine and smooth, fine and close foam. To sum up, the utility model discloses can cooperate ground grout station to use, improve the foaming multiplying power of foam, the device is light, and easy operation can deal with extensive conflagration in the pit, makes things convenient for the workman in the pit to use.
Further, the utility model discloses the trachea setting of presser is on the flange pipe, and first foaming pipe passes through the flange union coupling with the second foaming pipe, and the assembled connection is convenient for construct the installation, and wherein has partial part to break down the back, is convenient for change, has improved work efficiency.
Furthermore, a sealing ring is arranged between the air pipe and the pipe wall of the flange pipe, so that the sealing performance of the device is ensured.
Furthermore, an air flow regulating valve is arranged on the air pipe, the air pressure blown out from the air outlet is controlled by regulating the air flow regulating valve, the pumping amount of the foaming slurry can be conveniently controlled, and the generated three-phase foam amount can be further controlled.
Furthermore, the cross section of the air outlet is conical, the outlet end is a conical bottom, the area of air flow coming out of the conical air outlet is large, and a pressurizing effect is better achieved.
Furthermore, the foaming net is a hemispherical screen, the outlet of the Venturi nozzle is provided with a plurality of layers of foaming nets, the concave surfaces of the foaming nets face the outlet of the Venturi nozzle, and the contact area of foaming liquid and compressed air can be enlarged due to the design of the hemispherical screen, so that the foaming effect is better.
Further, the venturi nozzle is arranged at the position close to the inlet of the second foaming pipe, the air outlet of the air pipe is arranged right opposite to the inlet of the venturi nozzle, the pressure at the inlet of the venturi nozzle is effectively improved, and the foaming effect is better realized.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a three-phase foam foaming device for preventing and treating spontaneous combustion of coal.
In the figure: 1-a first bulb; 2-gas flow regulating valve; 3-a pressurizer; 4-trachea; 5-a second foam tube; 6-a venturi nozzle; 7-a foamed web; 8-air outlet; 9-a first flange; 10-a flanged pipe; 11-second flange.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, the three-phase foam foaming device for preventing and controlling spontaneous combustion of coal comprises a first foam pipe 1, a pressurizer 3, an air pipe 4, a second foam pipe 5, a Venturi nozzle 6 and a foam net 7, wherein the first foam pipe 1 is a Venturi tube, preferably, the outer wall of the first foam pipe 1 is a pipe with equal diameter, namely, a section of circular pipe is welded at the inwards concave position of the Venturi tube, and the design is convenient for construction and installation. When the foam injection device is used, the inlet of the first foaming pipe 1 is connected with a grouting pipe, the outlet of the first foaming pipe 1 is connected with the inlet of the second foaming pipe 5, the outlet of the second foaming pipe 5 is connected with a catheter, foam is injected to a position needing to be injected through the catheter, and the connection part of the first foaming pipe 1 and the second foaming pipe 5 is sealed.
A venturi nozzle 6 is arranged inside the second foaming pipe 5, preferably, the venturi nozzle 6 is arranged close to the inlet of the second foaming pipe 5, and a foaming net 7 is arranged at the outlet of the venturi nozzle 6; preferably, the foaming net 7 is a hemispherical screen, the outlet of the venturi nozzle 6 is provided with a plurality of layers of foaming nets 7, and the concave surface of the foaming net 7 faces the outlet of the venturi nozzle 6. The air inlet of the air pipe 4 is connected with the outlet of the pressurizer 3, the air outlet 8 of the air pipe 4 extends into the foaming pipe, the air outlet 8 is positioned between the outlet of the Venturi tube and the inlet of the Venturi nozzle 6, and the air outlet 8 faces the inlet of the Venturi nozzle 6. Preferably, the cross section of the air outlet 8 is conical, and the outlet end is a conical bottom, i.e. the air outlet 8 is a conical air outlet.
As shown in fig. 1, as a preferred embodiment of the present invention, the present invention further comprises a flange pipe 10, specifically, the outlet end of the first foaming pipe 1 is provided with a first flange 9, the inlet end of the second foaming pipe 5 is provided with a second flange 11, one end of the flange pipe 10 is connected to the first flange 9, and the other end is connected to the second flange 11. An opening is formed in the middle of the pipe wall of the flange pipe 10, and the air outlet 8 of the air pipe 4 extends into the flange pipe 10 from the pipe wall opening of the flange pipe 10; preferably, the air outlet 8 of the air pipe 4 is arranged right opposite to the inlet of the venturi nozzle 6, so that the pressure at the inlet of the venturi nozzle is effectively improved, and the foaming effect is better realized. In order to ensure good sealing, a seal ring is provided between the gas pipe 4 and the pipe wall of the flange pipe 10.
As shown in fig. 1, as a preferred embodiment of the present invention, an air flow regulating valve 2 is provided on an air pipe 4, and the air flow regulating valve 2 is used for controlling the air pressure blown out from an air outlet 8. The air pressure blown out from the air outlet 8 is controlled by adjusting the air flow regulating valve 2, so that the pumping amount of the foaming slurry can be conveniently controlled, and the generated three-phase foam amount can be controlled.
The utility model discloses a concrete application, connect equipment when needs foaming, with the entry and the slip casting union coupling of first foaming pipe 1, the exit linkage pipe of second foaming pipe 5, open presser 3, then adjust air current regulating valve 2, the foaming liquid is in first foaming of 1 (venturi) department completion of foaming, through 3 pressure injection compressed air of presser, the second foaming is accomplished in venturi nozzle department 6 of second foaming pipe 5, 7 completions of rethread foaming net are foamed for the third time, finally form fine and smooth, fine and close foam, spout the position that needs the bubble through the pipe with the foam.
It is visible to use the utility model discloses the device need not to dilute foaming liquid and mud in the pit, and the foam process the utility model discloses can form fine and smooth, fine and close three-phase foam after the cubic foaming of device, the utility model discloses can cooperate ground grout station to use, improve the foaming multiplying power of foam, the device is light, and easy operation can deal with extensive conflagration in the pit, makes things convenient for the workman in the pit to use.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a three-phase foam foaming device of coal spontaneous combustion prevention and cure which characterized in that: the foaming device comprises a first foaming pipe (1), a pressurizer (3), an air pipe (4) connected with the pressurizer (3), a second foaming pipe (5), a Venturi nozzle (6) and a foaming net (7), wherein the first foaming pipe (1) is a Venturi pipe, the inlet of the first foaming pipe (1) is used for being connected with a grouting pipe, and the outlet of the first foaming pipe (1) is connected with the inlet of the second foaming pipe (5); the Venturi nozzle (6) is arranged in the second foaming pipe (5), and the foaming net (7) is arranged at the outlet position of the Venturi nozzle (6); gas outlet (8) of trachea (4) stretch into in the foaming pipe, gas outlet (8) be located venturi's export with between the entry of venturi nozzle (6), just gas outlet (8) orientation the entry of venturi nozzle (6).
2. The three-phase foam foaming device for preventing spontaneous combustion of coal according to claim 1, wherein: the foaming pipe is characterized by further comprising a flange pipe (10), a first flange (9) is arranged at the outlet end of the first foaming pipe (1), a second flange (11) is arranged at the inlet end of the second foaming pipe (5), one end of the flange pipe (10) is connected with the first flange (9), and the other end of the flange pipe is connected with the second flange (11); and the air outlet (8) of the air pipe (4) extends into the flange pipe (10) from the pipe wall of the flange pipe (10).
3. The three-phase foam foaming device for preventing spontaneous combustion of coal according to claim 2, wherein: and a sealing ring is arranged between the air pipe (4) and the pipe wall of the flange pipe (10).
4. The three-phase foam foaming device for preventing spontaneous combustion of coal according to claim 1, wherein: and an air flow regulating valve (2) is arranged on the air pipe (4), and the air flow regulating valve (2) is used for controlling the air pressure blown out from the air outlet (8).
5. The three-phase foam foaming device for preventing spontaneous combustion of coal according to claim 1, wherein: the cross section of the air outlet (8) is conical, and the outlet end is a conical bottom.
6. The three-phase foam foaming device for preventing spontaneous combustion of coal according to claim 1, wherein: foaming net (7) are the hemisphere screen cloth, the export of venturi nozzle (6) is provided with a plurality of layers foaming net (7), just the concave surface orientation of foaming net (7) the export of venturi nozzle (6).
7. The three-phase foam foaming device for preventing spontaneous combustion of coal according to claim 1, wherein: the air outlet (8) of the air pipe (4) is just opposite to the inlet of the Venturi nozzle (6).
8. The three-phase foam foaming device for preventing spontaneous combustion of coal according to claim 1, wherein: the venturi nozzle (6) is arranged close to the inlet of the second foaming pipe (5).
9. The three-phase foam foaming device for preventing spontaneous combustion of coal according to claim 1, wherein: the outlet of the second foaming pipe (5) is connected with a conduit, and foam is injected to a position needing to be injected through the conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921569640.9U CN210698570U (en) | 2019-09-19 | 2019-09-19 | Three-phase foam foaming device for preventing coal spontaneous combustion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921569640.9U CN210698570U (en) | 2019-09-19 | 2019-09-19 | Three-phase foam foaming device for preventing coal spontaneous combustion |
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| Publication Number | Publication Date |
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| CN210698570U true CN210698570U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921569640.9U Active CN210698570U (en) | 2019-09-19 | 2019-09-19 | Three-phase foam foaming device for preventing coal spontaneous combustion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117281A (en) * | 2021-03-09 | 2021-07-16 | 西南石油大学 | Basalt three-phase foam extinguishing agent and preparation method thereof |
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2019
- 2019-09-19 CN CN201921569640.9U patent/CN210698570U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117281A (en) * | 2021-03-09 | 2021-07-16 | 西南石油大学 | Basalt three-phase foam extinguishing agent and preparation method thereof |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220907 Address after: 714026 north side of South Street, new area, high tech Industrial Development Zone, Weinan City, Shaanxi Province Patentee after: Weinan Shaanxi coal Qichen Technology Co.,Ltd. Address before: 710077 Shaanxi Coal Industry Chemical Group Co., Ltd. No. 2 Jinye Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: SHAANXI COAL AND CHEMICAL TECHNOLOGY INSTITUTE Co.,Ltd. |