Ventilation pipeline

FIELD: mining industry.

SUBSTANCE: pipeline has sections made in form of hermetically interconnected outer and inner covers, mounted with space relatively to each other, and main ventilator. On different ends of pipeline flow meter and additional ventilator are mounted, the latter having adjustable characteristics and being connected to inter-pipe space by branch pipe. In inner cover apertures are made placed along radius and along length of cover. Air comes from apertures to air channel and forms additional air flow near walls of inner cover, which lowers or heightens aerodynamic resistance of ventilation pipeline.

EFFECT: higher efficiency, higher safety, lesser costs.

2 dwg

 

The invention relates to the mining industry and can be used for ventilation of the workings of the great length of the discharge by means of pipelines.

Known vent pipe (A.S. No. 411211, 7 E 21 F 1/04, 15.01.1974, bull. No. 2), comprising outer and inner shells, coupling lock according to the invention the inner shell one end fixed in the coupling lock, and the other covers the following joints of the links in the external piping. The disadvantage of this device is the inability to control the aerodynamic resistance and large air leaks.

Known insulated Flex (A.S. No. 1242622, 7 E 21 F 1/04, 07.07.1986, Bulletin, No. 25)adopted for the prototype. Summary of the invention in that in the heat-insulated flexible pipe containing section, made in the form of a tightly interconnected inner and outer shells installed with a clearance of one relative to another, according to the invention in each section in the outer and inner membranes made lots of breathable fabric is equal to the area located one against the other. The disadvantage of this device is the inability to control the aerodynamic resistance and large air leaks.

Known pipelines consist of a single jingle is in the length of 3-10 m in hard and 5-20 m in flexible pipelines, which mine different way are connected to each other. They are characterized by significant aerodynamic drag caused by the roughness of the walls, as well as local resistance of a significant number of joints between the individual units and air leakage at joints and seams along the entire length of the pipeline. Increasing the length of production dramatically increases the amount of air required for filing in the pipeline, due to increased leakage. It is known that with increasing flow rate of air passing through the ventilation pipe, increases the necessary pressure to overcome the resistance to air flow (proportional to the square of the air flow). To create the necessary pressure or the required flow rate of air used, respectively, for serial or parallel installation of fans. This causes additional energy costs for ventilation output.

The technical result of the invention is to control the aerodynamic vent pipe and reducing the number of leaks.

The technical result is achieved by the fact that the vent pipe containing section, made in the form of a tightly interconnected outer and inner membranes mounted with clearance one considers the) other, the main fan, according to the invention equipped with mounted at each end of the pipeline flow meter and an additional fan with adjustable characteristics, connected with the annular space of the pipe, while the inner shell is made holes on the radius and length of the shell.

The application of the proposed device in comparison with the prototype allows you to control the aerodynamic vent pipe and to reduce air leaks in the pipeline.

The ducting is illustrated by drawings, figure 1 shows a longitudinal section of vent pipe, figure 2 - cross section of vent pipe, where:

1 - jacket;

2 - inner sheath;

3 - spacers;

4 - holes in the inner shell;

5 - tube for supplying air to the annular space;

6 - additional fan with adjustable characteristics;

7 - flowmeter;

8 - lock;

9 - main fan.

The vent pipe 1 includes an external shell, which is placed in the inner 2 shell and fixed relative to each other with spacers 3. Both edges of the shells 1 and 2 fix locks 8. Before placing the inner shell 2 shell 1 it performs holes 4 located on the radius is the length of the pipe. In the gap between the inner 2 and outer 1 shell set pipe 5, to which are connected an additional fan 6 with adjustable characteristics. Additional fan 6 mounted on the same end of the pipe, is installed on the main fan 9. On the opposite side in the ventilation pipe install the flow meter 7. Additional fan 6 take with adjustable flow rate, and the consumption of additional fan 6 does not exceed the consumption of the primary fan 9.

The ducting works as follows. In the inner shell 2 pump air through the primary air fan 9, which is located in one of the ends of the vent pipe. At the other end of the vent pipe using a flow meter 7 measure the flow rate of air. Then compare the indicators with the project and determine the amount by which to increase the airflow. Then set the desired mode for extra fan 6 (injection or suction of air). The air fed into the gap between the inner 2 and outer 1 shells on the pipe 5 for supplying air to the annular space. The air flows through the holes 4 in the inner shell 2 in the air duct, creating additional air flow at the walls inside the second shell 2. Thus, the discharge or supply air into the cavity between the shells with additional fan 6 with adjustable characteristics decreases or increases the aerodynamic resistance of the ventilation pipe.

The use of vent pipe provides the following benefits:

- management of the aerodynamic resistance of the pipeline;

- reducing air leakage in the ventilation pipe;

- use in mines located in sinking or cutting;

- increase safety;

- use in mine degasification systems;

- reducing the cost of airing;

- can be used in an explosive environment.

The ducting containing section, made in the form of a tightly interconnected outer and inner shells installed with a clearance of one relative to another, the main fan, characterized in that it has installed at each end of the pipeline flow meter and an additional fan with adjustable characteristics, connected with the annular space of the pipe, while the inner shell is made holes on the radius and length of the shell.



 

Same patents:

The invention relates to the mining industry and can be used in systems of ventilation of mines

The invention relates to the mining industry and can be used in the construction of mining enterprises and engineering structures, including in areas of permafrost

The invention relates to the mining industry and can be used for ventilation of mines

The invention relates to mining, in particular for ventilation of mine workings

The invention relates to mining and can be used in the preparation of the mining fields

The invention relates to mining and can be used in chamber-and-pillar system, the development of gas-bearing coal seams gentle fall

The invention relates to the mining industry and can be used for airing a dead-end cavities during auger excavation of coal

The invention relates to the mining industry and can be used for airing a dead-end cavities during auger excavation of coal

The invention relates to the mining industry, namely to the underground development of mineral deposits, and can be used when dealing airing excavation sites, safe operation of facilities on the undermined mountain ranges and so on

FIELD: mining industry.

SUBSTANCE: pipeline has sections made in form of hermetically interconnected outer and inner covers, mounted with space relatively to each other, and main ventilator. On different ends of pipeline flow meter and additional ventilator are mounted, the latter having adjustable characteristics and being connected to inter-pipe space by branch pipe. In inner cover apertures are made placed along radius and along length of cover. Air comes from apertures to air channel and forms additional air flow near walls of inner cover, which lowers or heightens aerodynamic resistance of ventilation pipeline.

EFFECT: higher efficiency, higher safety, lesser costs.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes use of screw-drilling machine for driving of several first ventilation shafts in ore body and driving several second shafts, while second and each second shaft crosses, at least, one matching first shaft, forming first support walls, supporting ceiling. First supporting ceilings consist of ore body zones between neighboring second shafts, each first support wall has portion of at least one first shaft, passing horizontally through it. Horizontal channels are formed, each of which is placed transversely to matching second shaft between appropriate portions of first shaft, formed in adjacent support walls, for forming of group of continuous ventilation shafts. Second shafts are filled for forming second supporting walls, supporting well ceiling, and first supporting walls are extracted. First ventilation shafts can be made parallel to each other. Second shafts may be directed perpendicularly relatively to first ventilation shafts. In ore body air-outlet and air-inlet ventilation mines can be formed, placed at distance from each other along horizontal line, while first or each first ventilation shaft passes through portion of ore body between air-inlet and air-outlet ventilation mines. Driving of second or each second shaft can be performed by cutting machine, or by drilling or explosive mining.

EFFECT: higher efficiency.

7 cl, 11 dwg

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, placed in ventilator chamber. By means of connecting channels ventilators are connected to air-conducting and air-draining channels, which com together in triple-output branch pipes, connected via ventilation channels to general mine ventilation network. Ventilation chamber is separated from air-conducting channels by longitudinal vertical wall. Air-conducting channels are made in form of one mine, separated by longitudinal horizontal wall between triple branch-pipes. Means for reversing air flow are mounted in branch pipes. In connection channels on force or suck-in side of ventilators cutting means are mounted. Assembling drift is connected to end of ventilator chamber.

EFFECT: higher safety, lower costs.

3 dwg

FIELD: mining industry.

SUBSTANCE: device has working and reserve ventilators, each of which has diffuser with rotary branch pipe, electric engine, connected to ventilator by transmission shaft via toothed sleeves, and devices, covering input and output of ventilator. Additionally plant is provided with doubled input box, made in form of mated individual boxes of working and reserve ventilators by rotating these to face each other relatively to vertical planes, passing through axes of ventilators rotation. Side inner walls of ventilators form up a common rib, on which axis of special piece is placed, in turns covering branch pipes of input boxes of working and reserve ventilators. When using ventilator plant near residential or administration buildings its output box is provided by muffler and cowl, and output branch pipes of ventilators are provided with controlling blades.

EFFECT: lower costs, higher durability.

2 cl, 4 dwg

FIELD: mining industry.

SUBSTANCE: method includes feeding fresh air along air ducts due to generic depression, and output stream is taken partially through supported mines due to generic depression and partially - through extracted space of extracted or previously extracted column by means of gas-sucking plant. Methane support control in fresh and output streams is maintained. From the surface into air duct a ventilation shaft is drilled and additional fresh air is fed therein in same direction with main stream. Adjustment of methane containment in air streams at extraction portion is performed by changing amount of air, fed additionally.

EFFECT: increased volume of fed fresh air without substantial reconstruction of ventilation system.

1 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: device has air feeding channels, positioned between support and coal massif and ventilator with pipe for sucking air away. Additionally device is provided with curtain of transparent plastic profiles with load, positioned in lower portion of curtain, positioned on carrying ropes, connected to driving drum. The latter is held on ceiling of support section and provided with electric drive with automatic and manual control. Lower portion of curtain enters a space, formed by walling of cable packer and grating. Ventilator, moved with extraction of coal massif, is positioned in ascending air stream in ventilation drift. Width of curtain equals width of support section, and length is in 1.3 times greater than vertical height of support.

EFFECT: higher efficiency.

4 dwg

FIELD: mining industry.

SUBSTANCE: device has air-intake channels and ventilator with air sucking pipe. Each air-intake channel is made in form of flexible plastic pipe with gate, placed on lower side of ceiling of support section or in ceiling body in parallel to its longitudinal axis. One end of air-intake channel is positioned at same level with working end of ceiling, and second one is connected to air sucking pipe, held below support section ceiling behind combine in parallel to axis of scrapping conveyer. Ventilator is mounted on mating support on out-flowing air stream. Flexible plastic pipes are made having U-like shape with crosspiece perforated along length, positioned along working edge of support section ceiling. Also, air-intake channel is provided with subs, each of which is made of two intertwined parts, mounted on rotation axis, separated by air-impenetrable insert. Subs and ceiling are interconnected with possible rotation of subs relatively to ceiling, and axis of subs is displaced relatively to axis of joint of support section ceiling and is parallel to it.

EFFECT: higher personnel safety, higher efficiency.

4 dwg

FIELD: mining industry, particularly ventilation of mines or tunnels during bauxite deposit development.

SUBSTANCE: method involves supplying pure air from field haulage roadway through blind drift of transport horizon into ore rising one due to mine depression; feeding part of air from rising horizon in intermediate blind drift; directing remaining pure air in layered air supply drift and then to entry ways for venting thereof; removing contaminated air through previously developed entry ways in layered venting drifts arranged in exhausted space at deposit ground along the strike; directing contaminated air through venting rises arranged in exhausted space along block boundaries at deposit ground to field venting drift drilled under deposit ground along the strike at venting horizon level and blind drift of venting horizon to field venting drift; supplying pure air from intermediate blind drift to field rise and then to field venting drift through blind drift of venting horizon. Intermediate blind drift and field rise are adapted to evacuate miners in emergency conditions.

EFFECT: increased efficiency and miner's safety due to changing pure and contaminated air mass flow within the boundaries of the block.

3 dwg

FIELD: mining industry, particularly to form venting system, which controls thermal mine conditions during combined mining.

SUBSTANCE: method involves forming overburden haulage inclined out of the pit extending across the strike up to interface between exposed and underground mines; extracting mineral from the haulage; constructing venting means and mounting support in approach mine; erecting heat-exchanging mines during opened mining.

EFFECT: elimination of time intervals during venting system construction and mining performing, simplified people evacuation in emergency and possibility to use heat-exchanging mines for other purposes.

2 dwg

FIELD: mining, particularly to vent ore and rock mines.

SUBSTANCE: method involves mixing fresh and exhaust air by blasting fuel mixture; forming suction jet, which discharges exhaust air outside the mine. Fuel mixture components are supplied by compressed nitrogen. Air mixing is performed with the use of mixture including sodium permanganate and hydrogen peroxide taken in ratio of 1:(3-10). The suction jet is formed by exhaust air ejection. Venting plant is arranged at bottom mine level. Device comprises body with nozzle arranged over fuel mixture and control panel. The device additionally has nitrogen, sodium permanganate and hydrogen peroxide vessels. Venting pipeline is secured to body nozzle. The venting pipeline is provided with jets to supply hydrogen peroxide and sodium permanganate connected with compressed nitrogen cylinder through control panel. The venting pipeline is composed of separate sections put one on another and provided with conical flares. The flares and adjacent sections define annular air suction slots.

EFFECT: provision of independent operation, simplified structure, increased operational safety and reduced power inputs for mine venting.

1 cl, 1 tbl, 2 cl

Up!