Ventilation box of the subway
SUBSTANCE: box is designed for ventilation shaft of the subway. The box includes a headgear construction with air-conducting windows and external barrier in the form of ring-shaped shield. The shield is made in the form of cone widening upward and of amorphous material, and the inner surface of which is coated with a protective coating with sound reflecting inner surface. There is a through clearance between the shield and headgear construction.
EFFECT: sound reduction.
3 cl, 1 dwg
The invention relates to the field of mining and construction and can be used in the construction of kiosks to be installed on the ventilation shafts underground.
Ventilation kiosks metro place, usually in areas of dense residential development and in terms of congestion of people and vehicles. In this regard, for such facilities is subject to strict requirements in respect of noise emanating from the mine from powerful ventilation units with air flow through the ventilation kiosk, and in relation to protective (vandal-proof) and aesthetic characteristics.
Known ventilation kiosk metro, including support structure with vozduhopropuskayuschy Windows, equipped with louvered grilles and external annular fence with vertical walls, lined inside soundproofing lining considerable thickness, not reaching the top of wall fence (EN 2286459 C1).
The main disadvantage of such a kiosk is that even a very large thickness of his fences with the lining does not provide a complete insulation on the lower floors of the residential buildings. This is due to the penetration part of sound vibrations through the fence in a horizontal direction. Other disadvantages of such a kiosk should be noted gromos the bone and the complexity of its design. In addition, such a construction is expensive and time consuming in construction.
Also known ventilation kiosk metro, including support structure with vozduhopropuskayuschy Windows and external annular enclosure with cover, made in the form of a funnel extending up from a sound-reflecting inner surface and mounted with a clearance relative to the support structure, the casing is made from a single steel sheet (EN 2319079 S1). This ventilation kiosk is the closest solution of the present invention to the technical essence and the achieved result.
The main disadvantage of the last of the above ventilation kiosks metro is insufficient efficiency of its functioning in relation to noise because of the low-frequency component of the sound vibrations manifested sometimes droning, almost can not be suppressed to the required values casing of sheet metal, and in the case of entering into resonance with the casing design can even lead to the destruction of the elements of the design of ventilation kiosk.
The objective of the proposed solution is the creation of the ventilation of the kiosk underground, the construction of which is devoid of the above disadvantages of the known kiosks.
The problem is solved is eat, what in ventilation kiosk metro, including support structure with vozduhopropuskayuschy Windows and external annular enclosure with cover, made in the form of a funnel extending up from a sound-reflecting inner surface and mounted with a clearance relative to the support structure, the cover fence made of amorphous material and coated on the inner surface of the protective coating. As an amorphous material casing fencing applied to a glass sheet, and the protective coating of the casing is made in the form of a polymeric film.
In the task received a new technical result. This result is to increase the effectiveness of the noise control design of the kiosk due to the suppression of low-frequency component of the sound waves by the casing material.
The essence of the invention and its advantages compared with the known technical solutions will become more clear and apparent from the following description of a specific example of implementation with reference to the accompanying drawing.
The drawing is a schematic representation of a view in vertical section of the proposed ventilation kiosk underground.
In this example, the ventilation subway kiosk erected on the upper bearing surface is STI 1 shaft 2. Ventilation kiosk contains:
a) a support structure with a roof 3, the vertical walls 4 which is made vozduhopropuskayuschy box 5, provided with louvered grilles 6.
b) the protection cover 7 mounted on the vertical walls 4 of the support structure 3 by means of the supporting frame 8 for the outer contour of the support structure 3. Between the support surface 1 of the shaft 2 and the bottom edge of the casing 7 is formed a gap "a".
The casing 7 is made in the form of a funnel extending up from the amorphous material. As such material in our example, sheet applied, colorless, transparent, sodium-calcium-silicate, soft and without any additional surface treatment of the glass thickness of 10 mm
The inner surface of the casing 7 lined protective (vandal-proof) coating 9, the free surface of which has a sound-reflecting property. As such coverage in our example applied to secure transparent/ tinted polystyrene film type GLASS-GARD thickness of 700 μm. The film is firmly bonded to the inner surface of the glass cover 7. The outer side of such film has a superior smooth surface.
The same coating can be deposited on the outer surface of the casing 7.
Due to the described relative positions of structural elements ol degenova device between the casing 7 and the vertical walls 4 formed growing up through the gap, communicated with the underground space and the surrounding atmosphere.
The form of a funnel in this example is a truncated cone. In another embodiment, it may be performed, for example, in the form of a truncated pyramid,
in) door opening 10 located under the casing 7 and is used for inside ventilation kiosk for purposes of inspection and maintenance or repair work.
g) the linear lamps 11 placed along the top and bottom edges of the glass cover 7. The lamps are made on the basis of light-series XR-E.
The operation of the ventilation kiosk, made using the invention is as follows.
Work with powerful ventilation units in the underground of the underground space is accompanied by the appearance of sound waves of different frequencies, which is manifested in the noise effect on the output of the shaft 2.
In the case of exhaust underground ventilation sound waves together with the air flow from the shaft 2 penetrates through the louvered grill 6 vozduhoprovodyaschih Windows 5 in extending up through the gap between the casing 7 fences and walls 4 of the support structure 3. In the specified gap is the difference of air pressure with maximum values in the lower part of the casing 7 and the minimum is in the upper part of
The low-frequency component of the sound waves has a pulsating effect with the same frequency directly on the protective coating 9 of the casing 7 in a direction at an acute angle to the horizontal and then meets the viscous resistance of the amorphous coating material, such as glass. In amorphous mass of glass is the energy of low-frequency sound vibrations are almost completely converted into heat energy. The result of this phenomenon the casing 7, is not associated with the supporting surface 1 of the shaft 2, does not produce oscillations in the horizontal direction and, therefore, do not spread themselves around the low-frequency sound waves, acting as a high-performance resonator acoustic oscillations.
High frequency component of the sound waves is attenuated in the beginning in the reflection inclined upward from sound-reflecting surface 9 of the protective coating 9 of the casing 7. In the upper part of the casing 7 these waves even more lose their ability to spread under reduced atmospheric pressure.
Due to the above-described structural features of the invention, sound waves effectively suppressed to the required level without exerting harmful effects on people around the ventilation shafts underground.
Creating inside the lower part of the casing 7 zones of higher air pressure to prevent the t suction in the underground space is the most polluted air from the surface layer of the atmosphere.
Other positive features of the invention, it should be noted striking aesthetics architectural design of ventilation subway kiosk, built on the basis of the present invention, due to the presence of the glass cover 7 is placed along its upper and lower edges of the led lamps 11.
In the following claims lists the essential features that are necessary and sufficient to solve the task.
As can be seen from the above, the set of essential features of the present invention provides a solution to the problem, namely the creation of a new ventilation kiosk underground, performing the function of a high-performance muffler underground mine with the separation of sound waves in terms of frequency and two-stage suppression of acoustic oscillations.
1. Ventilation kiosk metro, including support structure with vozduhopropuskayuschy Windows and external annular enclosure with cover, made in the form of a funnel extending up from a sound-reflecting inner surface and mounted with a clearance relative to the support structure, characterized in that the casing of the fence is made of amorphous material and coated on the inner surface of the protective coating.
2. Ventilation the first kiosk according to claim 1, characterized in that the amorphous material of the casing fencing applied glass sheet.
3. Ventilation kiosk according to claim 1, characterized in that the protective coating of the casing is made in the form of a polymeric film.
FIELD: instrument engineering.
SUBSTANCE: device, system and method aim at generation of column air flow. An air handling device comprises a body, an in-built driving wheel that generates downward air flow and in-built blades mounted in close proximity to the driving wheel at specified distance and serving to generate straight-line air flow. The device generates air flow that essentially holds column shape at the considerable distance. The method consists in generating air flow that essentially holds column shape at the considerable distance and is directed from ceiling to floor to mix air layers of air of various temperatures in an enclosed air space. Besides, the method consists that warm air directed from ceiling to floor accumulates thermal energy in floor, in devices being thereon and thereunder. If ceiling is colder than floor, accumulated energy is released.
EFFECT: reduced power consumption and noise level.
32 cl, 24 dwg
FIELD: heating systems.
SUBSTANCE: device is intended for air supply to the room and/or air discharge from the room. Device consists of the housing which has an air inlet and outlet and in the inner space whereof there provided is the air direction changing device. Housing consists of two covers which enclose the air direction changing device made in the form of a plate.
EFFECT: providing effective air supply to the room and/or air discharge therefrom.
12 cl, 3 dwg
FIELD: heating systems.
SUBSTANCE: invention refers to ventilation systems of rooms, and namely to natural plenum ventilation devices. Device consists of an air-intake branch pipe to be installed in the building wall opening and closed with an intake grid on the external edge. Device is equipped with an adjustable damper and filter. Device is equipped with the air pipeline connected to the air-intake branch pipe, and that air pipeline is installed along inner side of the building wall and located near the heating radiator or at least partially after the heating radiator. In the wall of the additional air pipeline there made is at least one air exhaust window or perforation supplying the air flow to the radiator, and adjustable shutter and filter is located in the additional air pipeline. In addition, the device can include a noise absorber. The latter shall be preferably installed in the additional air pipeline, and namely before adjustable shutter and filter as to air flow. Labyrinth-shaped noise absorber is preferable as well.
EFFECT: providing the possibility of heating the inlet air owing to air flow supply to the heating radiator.
5 cl, 1 dwg
FIELD: physics; heating.
SUBSTANCE: suppressor is intended for decrease of aerodynamic noise in air ducts of mechanical ventilation and air conditioning systems. Suppressor contains the body in cavity of which there are mounted acoustic dissipation elements pairwise contacting at inlet, forming tapering air passage channels and provided with convex fairings in contact points, as well as swing-out mechanism consisting of levers and control rods rigidly mounted at end faces of acoustic dissipation elements by washers and cotters.
EFFECT: higher efficiency of noise suppression within all the operation modes of ventilation and air conditioning systems.
FIELD: the booth is assigned for ventilation of the shaft of the Metro.
SUBSTANCE: the booth includes an above the shaft building with air passing windows and an external barrier in the shape of a ring-type housing. The housing is fulfilled in the shape of a expanding upwards funnel with sound reflecting surface. A hollow gap is between the housing and the above the shaft building.
EFFECT: reduces noise levels with the aid of a single element out of sheet material.
SUBSTANCE: ventilation pump comprises diaphragm pump, soundproofing chamber, and soundproofing inlet and outlet valves. According to the second version, the valve spaces are made of sound-absorbing chambers. According to the third version, the soundproofing check valves automatically shutoff the outer air duct when the signal from the external microphone exceeds a permissible level.
EFFECT: reduced noisiness.
FIELD: device for reducing noise at operation of plenum and exhaust ventilation systems, possibly used as separate units in ventilation chambers or built-in to air duct circuits.
SUBSTANCE: noise silencer includes housing restricted by walls and attachment members; zigzag air ducts formed inside housing by its walls and noise absorbing members. Air ducts inside housing are in the form of row of alternating different-height oblique-angle converging tubes and diffusers with converging and opening angles forming cyclically variable in cross section zigzag passages for air along width of housing at closing clearance through attachment members.
EFFECT: improved efficiency of noise silencing at low sound frequencies, uniform whole frequency effectiveness of ventilation noise silencer at reduced mass and dimension parameters.
1 dwg, 1 tbl
FIELD: reduction of noise from aerodynamic sources.
SUBSTANCE: noise silencer has internal tube with input and output holes; tube forms channel for passing air through. Tube is made of permeable shape-preserving fiber-porous polymer material, for example, of fiber-porous polyethylene or fiber-porous polypropylene. Tube is provided with airtight internal case made of galvanized steel sheet. Case is mounted to have gap relatively the tube and is filled with sound-absorbing material, for example, glass wool.
EFFECT: improved degree of noise reduction within standardized frequency spectrum.
21 cl, 7 dwg
FIELD: air conditioning and ventilation.
SUBSTANCE: piping article comprises core (1) made of a pipe section made of, e.g., a fiber porous polyethylene. Transverse recesses (2) and cuts (3) are staggered and directed oppositely with respect to each other. The width of each recess decreases in both directions from its middle part toward the ends of the cuts. Core (1) is provided with a three-layered flexible coating. The faces of the piping article are provided with joining members made of, e.g., branch pipes (7) and (8). When the piping article is bent, the core is stretched owing to the presence of cuts (3) and flexibility of the surface. The opposite side is compressed due to recesses (2) in the wall of core (1) and flexibility of the coating.
EFFECT: simplified structure.
50 cl, 3 dwg
SUBSTANCE: invention relates to mining and can be used during designing, construction and operation of deep depository (landfills) of liquid industrial wastes in underground medium. Method includes selection of sections for wastes disposal, structuring of pumping wells and pumping though it wastes into reservoir rocks. Additionally sections in underground medium are located under watershed divide parts of ground surface topography.
EFFECT: creation of method, providing the most total usage of underground space at reliable localisation of wastes in particular borders and during particular time.
2 cl, 1 ex, 1 dwg
SUBSTANCE: invention relates to mining industry and can be used for airing of mine and grooves and other objects of national economy, located under ground. Ventilatory installation includes operating and standby axial fans, located in ventilatory chamber. Ventilatory chamber is divided by means of partition cross inclined to side walls of chamber for two parts, used in the capacity of air-feed and offtake channels. Momtors of fans are located in part of ventilatory chamber, separated from the rest part of chamber by cross inclined - longitudinal partition. Transporting erection connection is connected to butt of ventilatory chamber.
EFFECT: decreasing of capital and operating costs, losses of mineral at development of stratified deposits and providing of safety of miner works.
SUBSTANCE: invention relates to field of mining and can be used for laying of cleaning space at underground mining. Method of waste chambers' laying includes feeding into chamber of laying mixtures with different content of binding. Laying of chambers by mixtures, containing bindings, it is implemented in its bottom part up to level of top boundary of adjustment of underlying horizon, them up to mark of soil of drilling level it is implemented laying by mixtures without bindings. After shrinkage of laid massif, filtration and evaporation of water by perimetre of chamber into shrink slot it is located reinforce structure. In laid massif lengthwise chamber's walls there are driller wells up to mark, located lower top mark of laying layer in bottom part of chamber. Part of massif between chamber walls and walls of wells is destroyed. Into wells there are put in re-bars with exceeding of them over level of laid massif. And then wells and shrink slot is saturated with solution, containing bindings, after what top part of chamber it is filled with mixture with binding.
EFFECT: effectiveness increase of laying of cleaning space at underground mining.
SUBSTANCE: invention relates to device and method for travel of mining conveyor section between the first position, co-axial with content of conveyor sections, and the second position of storage, located not endwise the content of conveyor section. Device contains carrier of section and guide, which directs movement of section between the first and the second positions. Additionally device is implemented with ability of connection to manipulation device by composition of conveyor sections so that carrier of section at least partially moves independently of manipulation device. Carrier of section with ability of rotation is connected with guide by means of intermediate pivot pin and allows travel stabiliser. Also it is provided method of travel of mining conveyor section.
EFFECT: effectiveness increase of manipulations by sections of conveyor.
12 cl, 5 dwg
SUBSTANCE: it is intended for simultaneous work with the loading machine, boring plant or with timber-mounting mechanisms having the possibility of being moved along the rigid trough line of drag conveyor by means of chainless supply mechanism when performing mine openings by drill and fire method. Pickup mechanism includes drag conveyor with a rigid line, a wedge nose piece which is mounted on the front part of drag conveyor and which serves for penetrating into the mined rock dump and for protecting the transporting member of conveyor against straight blow when breaking up the work face by explosives, two enclosing shields, support plate located in the front part of drag conveyor, power spacer-feed mechanism and the end spacer mechanism. Support plate is made with the possibility of perpendicular movement and attachment thereof relative to longitudinal axis of drag conveyor by means of two T-shaped guide beams and slots of the rigidly mounted semi-jacket, and longitudinal movements of bottom-hole pickup mechanism are performed by means of power spacer-feed mechanism mounted on the guide semi-jacket enveloping the lower part of the drag conveyor trough line, and consisting of two horizontal equally-spaced, parallel, opposite-directed and telescopic spacer hydraulic jacks and two feed hydraulic jacks located along the sides of drag conveyor and hinged to rigid semi-jacket of support plate and to the guide semi-jacket of power spacer-feed mechanism.
EFFECT: development of structural scheme of self-moving pickup mechanism with a rigid trough line designed for taking considerable loads from the mined rock broken with blasting and for moving along the trough line of the loading machine, boring plant or another excavation equipment.
SUBSTANCE: invention refers to mineral resource industry and can be used for transporting loose masses in wells, coal strip mines and storage areas. On the ends of the conveyer line up to 2 km long there located are power-drive stations which include extension drive shaft installed in the supporting rolling assemblies. At that, on the shaft ends there rigidly fixed are drive sprockets for transmitting rotation to the shaft through flexible chain connections from even number of electric drives, and in the middle of the shaft there rigidly fixed are drive sprockets for the conveyor pull chain drive. At that, on horizontal links of the pull chains there rigidly fixed are drag bars at a distance of 200-300 mm from each other. Metal plates are hinged to the drag bars from above and form a flexible hinged metal transportation belt with friction factor of 0.15.
EFFECT: developing reliable design of drag conveyor, which allows transportation of loose and plate materials for up to 2 km and more with the angle of slope of loose material transportation plane up to 40°, and increasing capacity up to 1500 t/h.
3 cl, 9 dwg
SUBSTANCE: invention refers to mineral resource industry and can be applied when developing ore and non-metal minefields for transporting mineral product under influence of proper weight. Method involves boring of a pilot well till design length is achieved by means of a forward travel reaming bit. After that, it is removed and on the free splined shaft there assembled is a reverse travel reaming bit which consists of telescopic cross-pieces and a centering guide. Then, the pilot well is enlarged with reverse travel till the required shape of "flattened cone" is obtained.
EFFECT: excluding rat-holing of the ascending workings, decreasing energy consumption when crushing mined rock, and creating safe working conditions.
FIELD: mining engineering.
SUBSTANCE: invention relates to facilities field, providing security level increasing in mining engineering, and can be used for temporary isolation of mine opening and protection of staff. Device includes inflatable crosspiece made of flexible, airtight material, outfitted by gate valves and autonomous source of compressed gas feeding. Crosspiece is implemented in the form of isolated, oriented lengthwise mine opening axisymmetric units, consisting of set of flexible inflatable tanks-bays. Additionally units are in layers installed in cross section of mine opening, and symmetry axis in each following layer is shifted relative to axis of previous layer by value, equal to half of placement pitch in unit of inflatable tanks-bays.
EFFECT: increasing of security level of rescue operations implementation at liquidation of incidents, providing of shaping mobility of inflatable crosspiece and reliable sealing of mine opening of any section with complex relief of walls.
5 cl, 2 dwg
FIELD: mining engineering.
SUBSTANCE: invention relates to mining industry and can be used at underground operation heavy abrupt layer with stowing of open area. Method includes implementation of layerwise drifts, upraise and alternate development of cut in horizontal fibers by means of combine and following filling of cuts by cast solid stowing. Before stowing supplying, on cut soil there are laid chutes and are installed shields for reservation as operating layerwise drift in waste horizontal fibers. Layerwise drifts are implemented up to beginning of layer development nearby top or nearby layer soil and they are used for coal transportation, ventilation and feeding of cast solid stowing into cuts of underlying horizontal layer.
EFFECT: increase of labour productivity and safety of mining.
FIELD: electrical engineering.
SUBSTANCE: invention relates to devices for determining exceedance of methane safe concentration level, which can be used in mining and chemical industry in air and gas control systems. The device has a power supply for the sensor, unit for forced ignition of the gas mixture, comprising a voltage converter and an igniter, blast-proof combustion chamber, comprising an insulating plug and an inspection window, device for recording ignition of the gas mixture, comprising a photodetector and a unit for processing explosion information, unit for generating a signal from the sensor to the main cable line and into local signalling presence of a lower explosive limit of gas for the given sensor. The device also contains a unit for generating voltage in form of regular pulse sequences for forced ignition, a heater and a unit for regulating its temperature. One output of the voltage converter is connected to the input of the unit for generating voltage, and the other output is connected to the input of the unit for regulating temperature of the heater.
EFFECT: increased efficiency of control.
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.