CN214697908U - Ventilation, dust removal and cooling system for excavation roadway - Google Patents
Ventilation, dust removal and cooling system for excavation roadway Download PDFInfo
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- CN214697908U CN214697908U CN202120225749.1U CN202120225749U CN214697908U CN 214697908 U CN214697908 U CN 214697908U CN 202120225749 U CN202120225749 U CN 202120225749U CN 214697908 U CN214697908 U CN 214697908U
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Abstract
The utility model discloses a tunnelling ventilation dust removal cooling system comprises insulating layer, local ventilation unit, water supply unit, the combination of spray dust removal cooling unit. The heat insulation layer and an air layer (2) between the heat insulation layer and surrounding rocks of the excavation roadway (15) form a composite heat transfer structure; the local ventilation unit comprises a wind pressing fan (12-1), a wind pressing barrel (3), an air draft fan (12-2) and an air draft barrel (4); the water supply unit comprises a water pump (5), an electric valve (6) and a water supply pipe (8); the spray dedusting and cooling unit comprises a vertical water pipe (10) and a spraying device, water mist sprayed downwards by an atomizing nozzle forms a water curtain above a tunneling working surface (14), and ventilation air flow of the local ventilation unit performs heat and humidity exchange with the water curtain. The utility model has the advantages of simple structure, operation are reliable, the practicality is strong, effectively prevent that the problem of dust removal cooling inefficiency and energy consumption increase from appearing in tunnelling ventilation system.
Description
Technical Field
The utility model belongs to the technical field of underground mine ventilation dust removal and cooling, concretely relates to ventilation dust removal cooling system that is used for deep underground mine tunnelling tunnel to use.
Background
Dust and high-temperature hazards in the process of deep well mining become prominent problems which restrict the safety, environment and occupational health of mine production. With the continuous increase of the mining depth of the mine, the ground temperature rises, and the heat release of the surrounding rock increases. The tunneling working face cannot form effective through air flow, ventilation is not smooth, dust is easy to accumulate, and the temperature of the working face is high. If no effective measures are taken, the situation that the dust concentration and the air temperature in the tunneling roadway are too high is more serious, the body health of underground workers is damaged, the productivity is reduced, and even the tunneling working face cannot work.
Currently, the mine cooling measures mainly include non-artificial cooling and artificial cooling. The artificial refrigeration cooling mainly comprises an artificial refrigeration water cooling technology, an artificial ice making cooling technology and an air compression type refrigeration technology, but any artificial refrigeration cooling mode has large investment, large energy consumption and high operating cost. The non-artificial refrigeration cooling is mainly ventilation cooling, but through a simulation excavation roadway cooling test, the ventilation cooling and the increase of air volume cooling are found, the temperature in the excavation roadway can not be reduced after being reduced to a certain degree, and the increase of the air volume is also limited by the specified air speed and the capacity of ventilation equipment, so that the ventilation cooling is not economical.
Disclosure of Invention
The utility model aims at providing a tunnelling ventilation dust removal cooling system that easy operation, operation are reliable, the practicality is strong to the ventilation dust removal and the cooling effect of underground mine tunnelling not good and ventilation, cooling energy consumption scheduling problem.
In order to realize the above object of the utility model, the utility model relates to a tunnelling ventilation dust removal cooling system adopts following technical scheme:
the utility model relates to a tunnelling ventilation dust removal cooling system comprises local ventilation unit, water supply unit, the combination of mist spray dust removal cooling unit:
the local ventilation unit comprises a pressure air fan, a pressure air cylinder, an air draft fan and an air draft cylinder; the air pressing barrel is arranged below the top of the central position of the heat insulation layer, the air pressing fan is arranged on the side surface of the middle section main roadway, and the air pressing fan is connected with the air inlet end of the air pressing barrel; the two groups of air draft fans and the two groups of air draft cylinders are respectively arranged along the two side surfaces of the heat insulation layer, and the air draft fans are connected with the air outlet ends of the air draft cylinders;
the water supply unit comprises a water pump, an electric valve and a water supply pipe; the water supply pipe is arranged along the inner side walls of the middle section large roadway and the driving roadway, and the water pump and the electric valve are sequentially arranged on the water supply pipe in the middle section large roadway;
the spraying, dust removing and cooling unit comprises a vertical water pipe and a spraying device, the spraying device is composed of a transverse water pipe hung on a top plate of a tunneling roadway along the width direction and a plurality of atomizing nozzles arranged on the transverse water pipe, the transverse water pipe is positioned on a tunneling working surface, and the transverse water pipe is connected with a water supply pipe of the water supply unit through the vertical water pipe.
Furthermore, a dust sensor is respectively arranged on the positions of two side walls of the tunneling roadway, which are 1-2 meters away from the tunneling working face.
In order to further improve the heat insulation, temperature reduction and dust suppression effects, the ventilation, dust removal and temperature reduction system for the excavation roadway is further provided with a heat insulation layer, the heat insulation layer is of a roadway-shaped structure with two closed sides and upper part and an opening end part and is matched with the excavation roadway, the heat insulation layer is arranged along the length direction of the excavation roadway, the distance from the outer wall surface of the heat insulation layer to the peripheral wall surface of the excavation roadway is 0.2-0.3 m, and the vertical distance from the inner end part of the heat insulation layer to the excavation working surface is 4.5-5.5 m; the heat insulating layer and an air layer between the heat insulating layer and the surrounding rock of the excavation roadway form a composite heat transfer structure.
Further, the distance between the adjacent atomizing nozzles arranged on the transverse water pipe is 450-550 mm.
Compare with traditional excavation tunnel local ventilation system, the utility model relates to an excavation tunnel ventilation dust removal cooling system has following positive effect after adopting above technical scheme:
(1) the ventilation, dust removal and cooling combined system adopts a combined cooling method of heat release control of a heat source and precooling ventilation airflow for roadway surrounding rock heat insulation, and achieves double heat insulation and cooling effects on the heat source and the environment. The field test result shows that the cooling effect is very obvious, and the temperature of the air in the driving tunnel is reduced to more than 5 ℃.
(2) A row of atomizing nozzles are arranged at the top of a roadway above a driving face, water sources come from mine water burst, the atomizing nozzles form a water curtain on the driving face, dust generated in the driving roadway is captured and purified in situ in real time, and meanwhile, the water curtain and local ventilation air flow perform heat and humidity exchange, so that the environment cooling effect of the driving face is realized. The field test result shows that the dust removal efficiency of the system reaches more than 91%.
(3) The process flow is simple, and real-time cooling and dust removal can be realized by arranging the control system.
Drawings
FIG. 1 is a schematic plan view of the ventilation, dust removal and cooling system for the excavation roadway of the utility model;
FIG. 2 is a partially enlarged schematic plan view of a tunneling working face of the ventilation, dust removal and cooling system for a tunneling roadway of the present invention;
FIG. 3 is a schematic diagram of the arrangement of the heat insulation layer of the surrounding rock of the excavation roadway of the ventilation, dust removal and cooling system of the excavation roadway of the utility model;
fig. 4 is the utility model discloses a tunnelling atomizer arrange the schematic diagram.
The reference signs are: 1-a heat insulation layer; 2-an air layer; 3-pressing an air cylinder; 4-a draught tube; 5, a water pump; 6-an electric valve; a 7-Y type filter; 8-a water supply pipe; 9-a transverse water pipe; 10-a vertical water pipe; 11-an atomizing nozzle; 12-1-forced air blower; 12-2-air draft fan; 13-a dust sensor; 14-tunneling a working face; 15-tunneling a roadway; 16-middle section main lane.
Detailed Description
For better describing the utility model, the following description is made in detail with reference to the accompanying drawings.
By figure 1 the utility model relates to a tunnelling ventilation dust removal cooling system plane structure schematic diagram and combine figure 2, figure 3, figure 4 to see, the utility model relates to a tunnelling ventilation dust removal cooling system comprises insulating layer 1, local ventilation unit, water supply unit, the combination of spray dust removal cooling unit:
the heat insulation layer 1 is of a tunnel-shaped structure with two closed sides and upper part and open end and matched with the excavation tunnel 15, the heat insulation layer 1 is arranged along the length direction of the excavation tunnel 15, the outer wall surface of the heat insulation layer 1 is 0.2m away from the peripheral wall surface of the excavation tunnel 15, and the vertical distance between the inner end part of the heat insulation layer 1 and the excavation working surface 14 is 5.0 m; the heat insulation layer 1 and an air layer 2 between the heat insulation layer and surrounding rocks of the excavation roadway 15 form a composite heat transfer structure; the thickness of the heat insulation layer 1 is 0.1-0.2 m, and the heat insulation layer is made of heat insulation materials with good heat insulation performance and certain strength, such as centrifugal glass fiber cotton, rock wool and the like.
The local ventilation unit comprises a pressure fan 12-1, a pressure fan drum 3, an air draft fan 12-2 and an air draft drum 4; the compressed air cylinder 3 is arranged below the top of the central position of the heat insulation layer 1, the compressed air fan 12-1 is arranged on the side surface of the middle section main roadway 16, and the compressed air fan 12-1 is connected with the air inlet end of the compressed air cylinder 3; the two groups of the exhaust fans 12-2 and the exhaust cylinders 4 are respectively arranged along the two side surfaces of the heat insulation layer 1, and the exhaust fans 12-2 are connected with the air outlet ends of the exhaust cylinders 4;
the water supply unit comprises a water pump 5, an electric valve 6, a Y-shaped filter 7 and a water supply pipe 8; the water supply pipe 8 is arranged along the inner side walls of the middle section large roadway 16 and the tunneling roadway 15, and the water pump 5, the electric valve 6 and the Y-shaped filter 7 are sequentially arranged on the water supply pipe 8 in the middle section large roadway 16; the distance between the adjacent atomizing nozzles 11 arranged on the transverse water pipe 9 is 400-600 mm. And respectively installing a dust sensor 13 at the position of two side walls of a tunneling roadway 15 which is about 1-2 meters away from the tunneling working surface 14, and controlling the laying height to be within the range of 1.45-1.55 meters.
The spraying, dust removing and cooling unit comprises a vertical water pipe 10 and a spraying device, the spraying device consists of a transverse water pipe 9 hung on a top plate of a driving roadway 15 along the width direction and a plurality of atomizing nozzles 11 arranged on the transverse water pipe 9, the transverse water pipe 9 is positioned on a driving working surface 14, and the transverse water pipe 9 is connected with a water supply pipe 8 of a water supply unit through the vertical water pipe 10; the water source of the water supply pipe 8 is from a water sump which takes mine water as a natural cold source.
The water mist sprayed downwards from the atomizing nozzle 11 of the spray dust removal cooling unit forms a water curtain above the tunneling working face 14 to completely seal dust generated by the tunneling working face 14; the ventilation air flow generated by the local ventilation unit is in heat and moisture exchange with the water curtain.
The utility model discloses use in the tunneling operation under a certain metal mine. Adopt the utility model discloses afterwards, dust concentration obviously reduces, and tunnelling tunnel dust concentration is by reforming transform preceding 31.5 ~ 222.5mg/m3Reduced to 2.5-12.7 mg/m3The dust removal efficiency reaches more than 91 percent, and the working environment of the tunneling working face is greatly improved.
To tunnelling the tunnel in the installation the utility model relates to a tunnelling ventilation dust removal cooling system back, actual measurement tunnelling tunnel air temperature, the air temperature in the tunnel is the highest 26.5 ℃, and the cooling effect is very obvious.
Claims (4)
1. The utility model provides a tunnelling ventilation dust removal cooling system which characterized in that is by local ventilation unit, water supply unit, the combination of spray dust removal cooling unit and constitutes:
the local ventilation unit comprises a wind pressing fan (12-1), a wind pressing barrel (3), an air extracting fan (12-2) and an air extracting barrel (4); the air pressing barrel (3) is arranged below the top of the central position of the heat insulation layer (1), the air pressing fan (12-1) is arranged on the side surface of the middle section main roadway (16), and the air pressing fan (12-1) is connected with the air inlet end of the air pressing barrel (3); the two groups of the exhaust fans (12-2) and the exhaust barrel (4) are respectively arranged along two side surfaces of the heat insulation layer (1), and the exhaust fans (12-2) are connected with the air outlet end of the exhaust barrel (4);
the water supply unit comprises a water pump (5), an electric valve (6) and a water supply pipe (8); the water supply pipe (8) is arranged along the inner side walls of the middle section large roadway (16) and the tunneling roadway (15), and the water pump (5) and the electric valve (6) are sequentially arranged on the water supply pipe (8) in the middle section large roadway (16);
the spraying, dust removing and cooling unit comprises a vertical water pipe (10) and a spraying device, the spraying device is composed of a transverse water pipe (9) hung on a top plate of a tunneling roadway (15) along the width direction and a plurality of atomizing nozzles (11) arranged on the transverse water pipe (9), the transverse water pipe (9) is positioned on a tunneling working surface (14), and the transverse water pipe (9) is connected with a water supply pipe (8) of a water supply unit through the vertical water pipe (10).
2. The ventilation, dust removal and temperature reduction system for the excavation roadway of claim 1, characterized in that: and a dust sensor (13) is respectively arranged on the two side walls of the tunneling roadway (15) which are 1-2 meters away from the tunneling working surface (14).
3. The ventilation, dust removal and temperature reduction system for the excavation roadway of claim 2, characterized in that: the heat insulation layer (1) is of a roadway-shaped structure with two closed sides and upper part and an open end and matched with the tunneling roadway (15), the heat insulation layer (1) is arranged along the length direction of the tunneling roadway (15), the distance from the outer wall surface of the heat insulation layer (1) to the peripheral wall surface of the tunneling roadway (15) is 0.2-0.3 m, and the vertical distance from the inner end part of the heat insulation layer (1) to the tunneling working surface (14) is 4.5-5.5 m; the heat insulation layer (1) and the air layer (2) between the heat insulation layer and the surrounding rock of the excavation roadway (15) form a composite heat transfer structure.
4. A heading tunnel ventilating dust-removing and cooling system as claimed in claim 1, 2 or 3, wherein: the distance between the adjacent atomizing nozzles (11) arranged on the transverse water pipe (9) is 450-550 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120225749.1U CN214697908U (en) | 2021-01-27 | 2021-01-27 | Ventilation, dust removal and cooling system for excavation roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120225749.1U CN214697908U (en) | 2021-01-27 | 2021-01-27 | Ventilation, dust removal and cooling system for excavation roadway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214697908U true CN214697908U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120225749.1U Active CN214697908U (en) | 2021-01-27 | 2021-01-27 | Ventilation, dust removal and cooling system for excavation roadway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214697908U (en) |
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2021
- 2021-01-27 CN CN202120225749.1U patent/CN214697908U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220825 Address after: 243000 No. 666 Xitang Road, Ma'anshan Economic Development Zone, Anhui Province Patentee after: MAANSHAN Mine Research Institute Co.,Ltd. Patentee after: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: 243000 No. 666 Xitang Road, Ma'anshan Economic Development Zone, Anhui Province Patentee before: MAANSHAN Mine Research Institute Co.,Ltd. Patentee before: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH, ENGINEERING INVESTIGATION AND DESIGN Co.,Ltd. |
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| TR01 | Transfer of patent right |