Device for control over operation mode of ventilating installation
FIELD: machine building.
SUBSTANCE: device is equipped with autonomous sub-system of control over separate ventilating installation. The sub-system consists of a mode setting block, of an electric engine smooth start-up block, of a control block, outputs of which are connected to inputs of actuators of working wheel blades turn and turn of the gate of the ventilator, of sensors of working wheel blades position and gate position and of a metre of current voltage or electric engine exciting current. The device is additionally equipped with autonomous sub-systems of control over separate ventilator installations. Each sub-system contains an actuator for control over brake, the input of which is coupled with the output of the control block, pressure and brake gauges and a micro-processor controller including a "driving-driven" mode switch block, an input-output module and a micro-processor module. The outputs of the sensors of working wheel blades position, gate position, feed voltage or electric engine exciting current, gauges of pressure and brake are connected with corresponding inputs of the input-output module. The block for electric engine smooth start-up of each autonomous sub-system is made in form of a combined block of a smooth start-up-adjustment of excitation (SSB/EAB). The latter is used as a block of smooth start-up with phase control at application of an a-synchronous electric engine and as a block for adjustment of excitation current at application of synchronous electric engine of the ventilator. The microprocessor controller is coupled with the electric engine of the ventilator via the module of input-output and SSB/EAB.
EFFECT: increased reliability of control over installations containing several ventilator aggregates with a-synchronous or synchronous electric engines.
2 cl, 1 dwg
The invention relates to a fan installations, namely, to control their operation, in particular, during automatic control of the fan units mine and tunnel ventilation underground.
A device for controlling the mode of operation of the fan installation (patent No. 2064587, CL E21F 1/00, 1996), containing a program controlled unit approval pressures, made in the form of a digital controller, to the first input of which is connected to the unit job pressure and installed on the outlet of the fan pressure sensor, position sensor blades and the rotational speed of the impeller, the outputs of which are connected with inputs of block matching pressures. In addition, the device contains a power supply, combined with a block of soft start and braking unit and the power supply to the electromagnetic clutch connecting the shafts of the motor and fan.
The disadvantage of this device is functional complexity, low reliability control mode ventilation unit, as well as its high cost due to the presence of a number of complex blocks and redundant links.
Closest to the claimed technical essence is a device for controlling the mode of operation of the fan installation (patent No. 2146331, CL E21F 1/00, 2000), contains a programmable control unit, the lock set options actuators rotate the blades of the impeller, the elements of the gate with their position sensor, and the outputs of the sensors are connected to corresponding inputs of a programmable control unit associated with the remote control module and a smooth start of the fan motor.
The disadvantage of this device is that it cannot apply when using for the fan drive with synchronous motor, and the impossibility of its use in the management of parallel fan units and the remote control mode from the Manager or the upper-level computer.
The aim of the invention is the control unit that contains multiple fan units, to drive using asynchronous or synchronous motors.
This objective is achieved in that the control device has a stand-alone engine management of individual fan units (BBG), microprocessor controllers which are equipped with blocks mode "master-slave"modules I / o and microprocessor module, and the electric fans powered through module I / o, and the combined unit PPO/BRV, which is used as a unit soft start (PPO) with phase control in case of skin is of an asynchronous motor or as a unit controlling the excitation current in the case of a synchronous motor of the fan. This microprocessor-based controllers of Autonomous control systems, ventilation units are equipped with individual control panels are connected to each other through the modules, I / o and microprocessor controller MKUU (PC) at the top level. At the same Autonomous system management fan units BBG1, BBG2, BBGncontain blocks of actuators control the rotation of the blades of the impeller, the brakes, the opening of the gate apparatus of the fan and drives technological equipment ventilation unit, and the fans are equipped with pressure sensors fan, the position of the gate and the blades of the impeller of the fan, brake rotor, temperature and vibration bearings, excitation current or voltage of the fan motor, as well as the condition of process equipment ventilation unit.
In the drawing figure 1 presents the block diagram of the control device of the fan installation, which includes the Autonomous system fan speed control BBG1, BBG2containing a microprocessor-based controllers MK1, MK2fan speed control, fan1In2and the motors of the ED1The ED2, combo units PPO/BRW soft-start and maintains the state of excitation of a synchronous motor of the fan, and microprocessor controller (computer) upper level MKUU and block set modes.
Microprocessor controllers MK1and MK2management subsystems BBG1and BBG2contain the module I / o 2, microprocessor module 1, unit 4 switch modes master-slave, and BBG1and BBG2equipped with individual control panels 5 and block 3 actuator control fan and installation. Subsystem OMS1and BBG2also contain actuators 6 of rotation of the blades of the impeller, the brake rotor 7, the control gate of the fan 8 and the control of technological equipment installation 9, the inputs of which are connected respectively to the first, second, third and fourth outputs of the unit 3 control of actuators of the fan unit. The fan units are equipped with sensors: a 10 - state of technological equipment, 11 - actual pressure fan, 12 - position of the blades of the impeller, 13 - position of sliding apparatus 14 and 15 of the temperature and vibration of the bearings of the fan rotor, 16 - position brake rotor and 17 - sensor supply voltage or excitation current of the motor, the outputs of which are connected respectively with 1, 2, 3, 4, 5, 6, 7 and 8 input module I / o 2.>
The control system also includes a block 18 set modes pressure ventilation unit, the input of which is served raw data to determine the required (specified) pressure, for example, NL(the number of people in the mine), TAnd(t) (air temperature), etc. Functions of the block 18 can be performed programmatically microprocessor controller MK "leading" SUV.
Control of an operation mode of the fan installation is performed in the following sequence.
On microprocessor controllers MK1, MK2etc. staff through blocks 4 is set to the mode "leading-slave", "master" on the installation consisting of several subsystems SUV may be only one controller. After entering the install command "start" from the system controller (computer) upper level MKUU first run the fan unit, the mode controller which is defined as "leading".
After running the fan installation unit 18 job parameters produces the value of the specified pressure ventilation unit R3(t), if the fan is not working and the actual pressure PF(t) is zero - microprocessor controller MK1through the module "I / o" 2 outputs a signal on the PPO block1 /(BRV1and by the PPO block by a smooth increase of the voltage U launches first motor fan1. After turning on the fan In1if the actual pressure Pf(t) is less than R3(t), the digital controller implemented on the basis of microprocessor controller, via the actuating unit 3 outputs a signal to the actuator 6 to increase the angle of the blades of the impeller. In case of equality given R3(t) and the actual Pf(t) pressure ventilation unit rotation of the blades of the impeller is stopped. In the process, if the actual pressure ventilation unit is less than specified, the host microprocessor controller launches installed in parallel slave fan unit, and then simultaneously increasing the angles of the blades of their wheels to the position at which RF(t)=P3(t).
In the case of use as a fan drive of the synchronous motor unit PPO/BRW controls the excitation current J of its rotor as a function of position of the blades of the impeller, for example, as specified in the description of the patent No. 2129688 on application No. 96121324 from 28.01.98.
If necessary reversal mode in ntestinal installation when the unit 18 set modes gives the job in the form of negative pressure, i.e. P3(t), microprocessor controllers MK1and MK2subsystems BBG1and BBG2through blocks their actuators 3 deploy the blades of the impeller to angles equal to 135°, which leads to the reversal of the modes of the ventilation unit, i.e. PF(t)=-R3(t).
If necessary, turn off the fan installation when P3(t)=0, first off slave fan unit, then closes his cyberwise machine, and then turn off the master unit, closes his cyberwise apparatus and included them standing brakes.
1. The device control mode ventilation unit containing an Autonomous management subsystem separate fan unit, including the unit set modes, block soft start motor control unit, the outputs of which are connected to the inputs of the actuators of rotation of the blades of the impeller and the gate of the fan, the position sensors of the blades of the impeller, the provisions of the gate and the sensor supply voltage or excitation current of the motor, characterized in that the device is equipped with additional independent subsystems management of individual fan units, being the m each Autonomous management subsystem separate fan unit contains the actuating mechanism for the brake control, an input connected to the output of the control unit, pressure sensors and brakes, and a microprocessor controller including block mode "master-slave"mode, the module I / o and microprocessor module, and the outputs of the position sensors of the blades of the impeller, the provisions of the gate supply voltage or excitation current of the motor, pressure and brakes are connected to respective inputs of the module I / o and block soft start motor each Autonomous management subsystem separate fan unit made in the form of a combined block soft start control excitation (PPO/BRV), which is used as a unit with soft start phase control in the case of the use of the asynchronous motor, and the control unit of the excitation current in the case of the synchronous motor of the fan, with microprocessor controller through module I / o and PPO/BRW connected to the fan motor.
2. The device according to claim 1, characterized in that the device is equipped with a microprocessor-based controller top level, and each Autonomous management subsystem separate fan is equipped with individual remote control, and microprocessor-based controllers of Autonomous subsystems separate control of the fan and connected by input-output and with a microprocessor-based controller top level.
SUBSTANCE: system includes the following which is installed in mine working: sensors of monitoring mine environment background (temperature, gas content, methane, dust, displacement of beds, etc.), recording of location and direction of movement of mine workers, movable video and infrared cameras, device for detection and formation of control commands, terminals of operators performing the monitoring of mine environment background and location of mine workers and control of the system operation. Mine workers are provided with transponders and individual pendants. Transponders are intended to exchange code radio signals in request-reply mode with transmitting-receiving devices, which are located along mine working, which allows performing the monitoring of location and movement of mine workers. Individual pendants send individual light code signals in acoustic, infrared and radio ranges of waves; at that, sent codes are identified with personality of mine worker. Device for detection and formation of control commands, as well as database to it are implemented in computer. Database includes the data on mine working plan, location of sensors, coordinates of request-reply devices, individual codes of transponders and owners identified as per them, threshold parametres of emergency situations, modulation parametres of individual light code signals of pendants. Besides in mine working there arranged are movable video and infrared cameras by means of which the situation can be controlled, as well as devices for activation of individual pendants and detection of individual light code signals sent with pendants in acoustic, radio and infrared wave ranges. All sensors, transmitting-receiving devices, detection, activation devices of individual pendants, movable video and infrared cameras are connected to device of detection and formation of control commands.
EFFECT: monitoring of the well background, just-in-time warning of workers about threats, evacuation control, search of those who are suffering distress.
10 cl, 2 dwg
SUBSTANCE: proposed invention comprises using uphole of outer string with filtration section aligned with drill string that doubles as protective string that, thanks to high torques can overcome friction forces caused by rock pressure, producing water column in annular space between hoe walls and outer string solid part outer surface equal to the height of column from its sealer to filtration part that kills hydrostatic pressure of local water, and using a controlled gap between outer and drill strings to generated throttling effect of releasing water-sand mix from the bed.
EFFECT: reduced load on drill and outer strings, possibility to control drilling height.
2 cl, 2 dwg
SUBSTANCE: method includes air supply from main mines along panel transport mines to block transport mines to areas of mining works and removal of spent air from bottom hole through split chambers in block ventilation mines to panel ventilation mines further to main ventilation mines, at the same time part of spent air from panel ventilation mines through blocks, where treatment works are not carried out, recirculates to block ventilation and split mines, and also through block transport mines, to panel transport mines with the help of additional recirculating ventilation plants located on panel and block mines, where mining works are not carried out.
EFFECT: lower risk of contaminated air accumulation in mined-out space, provision of stable microclimate in areas of mining works and reduced costs for ventilation.
SUBSTANCE: long blind drift ventilation method involves drilling of the main and additional wells in a pillar between adjacent and blind drifts; development of the cavity connecting the main and additional wells; air supply via the main well from fan or other draft source from adjacent drift to blind one; air ejection via additional wells from adjacent drift to blind drift. For more qualitative mixture of active (inducing) and passive (induced) jets the created cavity has bigger length and is made in the form of cone - diffuser.
EFFECT: increasing the jet head, flow continuity and its hydrodynamic stability, increasing system ejection coefficient.
SUBSTANCE: rock lining method involves erection of n-coal liner in filling mass from equal n-elements along helical spiral, installation of hollow guide template on bearing set prior to erection of filling mass, which repeats contours and clear sizes of development and the height of which is more than filling increment. At that, lining elements are laid on outer surface of template; after that filling mass is erected around liner; then template is lifted through one filling increment; sequence of operations is repeated till the liner erection is completed.
EFFECT: maintaining straightness of development liner during erection.
SUBSTANCE: method for ventilation of development entries by way of slanting horizontal wells bored from the surface involves delivery of fresh air into the well due to general shaft depression and discharge of the outgoing air stream along main entries and the well. The shaft of the slanting horizontal well bored from the surface is positioned within a protective pillar between coupled development entries being arranged; discharge of the outgoing air stream from the development faces is performed through the breakthrough closest to the faces that intercepts the well shaft and with the help of a vacuum pump installed on the surface at the well mouth.
EFFECT: provision for independent ventilation of coupled development entries and extraction faces and reduced scope of full-faced entries being arranged.
SUBSTANCE: invention refers to mining and can be implemented at development of mineral deposits with stowing mined space. Composition of stowage mixture containing milled granulated blast furnace slag, inert filler and water consists of the said acidic slag of fractions smaller, than 0.071 mm not less 90 wt %, as inert filler - wastes of concentration of wet magnet separation of ferrous quartzite containing fractions smaller, than 0.071 mm not less 90 wt %, additionally - super fluidising agent SP-1 at the following ratio of components, wt % said slag 22, said wastes 54.5, super fluidising agent SP-1 0.4 of slag contents, water - the rest.
EFFECT: raised strength, increased volumes of utilised anthropogenic wastes for considerable improvement of ecological medium.
1 ex, 2 tbl
SUBSTANCE: invention refers to mining and can be implemented at underground development of mineral deposits with stowing mined space. Stowage mixture contains, wt %: Portland cement or its milled clinker 1.4 - 13.68, milled zeolite rock 0.21-10.4, brine of 20÷105 g/l mineralisation, mainly of sodium chloride at temperature facilitating temperature of stowage mixture not below +15°C 14.9 - 26.96, fluidizing agent 0.01 - 0.3, filler - the rest. The invention is developed in dependant claims of the invention formula.
EFFECT: raised mobility and flowability of stowage mixtures, reduced shrinking at maintaining specified hardness, and reduced costs for nature conserving measures from negative effect of harmful salt saturated wastes of diamond extraction.
4 cl, 3 ex, 2 tbl
SUBSTANCE: shaft pneumatic bridging comprises pneumatic shell, suspension unit, protective jacket, manometric and air-supply hoses, device for filling, control of excessive air pressure and its ejection, mount cord. At the same time pneumatic shell is arranged in the form of soft axisymmetric toroidal shell of rectangular section, inside of which there is sleeve arranged, and along its axis there is pipe mounted in with diametre that is less compared to sleeve. Besides pneumatic shell is separated into two equal parts by means of perforated web, upper end and its side surfaces are coated by loose-fitting meshy web with lap towards working zone of rise heading, upper end is made of synthetic high-module fibre of high strength.
EFFECT: improved operational reliability of shaft pneumatic bridging.
SUBSTANCE: half-open course is arranged along chamber perimetre at the level of drilling crossdrift in interchamber pillars, and wooden lining is arranged in it as protruding with its dead part into stripped area of chamber. In discharge courses there are drain partitions installed, and hydraulic stowage finely dispersed material without binder is supplied through course into stripped chamber to the level of ventilation crossdrift. After drainage of water and setting of stowage massif from preserved half-open course along processed pillars there is a row of vertical and inclined wells drilled for the whole capacity of stowage massif, casing pipes are lowered from the surface of which into wells together with reinforcement rods, which protrude over the level of stowage massif. Afterwards the hardening solution is used to fill the following: at first, through wells - preserved half-open courses, then - the wells themselves, and lastly, upper part of chamber till its ceiling, which forms capping.
EFFECT: reduced consumption of binder.
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.
FIELD: oil and gas extractive industry.
SUBSTANCE: method includes use of device providing for manufacturability of assemblage of casing and drilling columns and concurrent drilling by two columns, provided with independent drives, and drilling, by casing column, of non-stable rock solids performed with frequency no greater than one calculated from formula
where Vmec - mechanical drilling speed, m/min, Fr - friction forces against rotation, Ften - friction forces against linear displacement, R - casing column radius, m, α - angle between vectors of directions of linear and rotating movements.
EFFECT: higher effectiveness, higher productiveness, higher reliability.
2 cl, 5 dwg, 1 ex
FIELD: mining industry.
SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C°), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.
EFFECT: higher efficiency, effectiveness, broader functional capabilities.
8 cl, 5 dwg
FIELD: gas, oil, oil refining and other industries.
SUBSTANCE: invention relates to building and operation of underground reservoir in stable rocks, for instance, soluble salt deposits. Method includes delivery of water and putting out brine along water feed and brine lifting pipes placed one inside the other, charging and storing of gas in underground reservoir. After brine lifting, reservoir is dried and then is filled up with alternating layers of absorbent and inert porous material, volume ratio 2:1, delivered along clearance between water feed and brine lifting pipes. Brine lifting pipe is perforated in lower part in height of reservoir and it is installed in lower part of reservoir. Difference between angles of repose of absorbent and inert material does not exceed 10 degrees. This done, reservoir is filled with gas delivered along perforated brine lifting pipe.
EFFECT: increased productive volume of reservoir owing to sorption of gas on surface of absorbent, reduced cost of gas storing.
FIELD: mining industry.
SUBSTANCE: invention can be used for transportation of rock in underground mines for reloading of rock from one conveyor to the other installed at one level. For this purpose device is used containing pair of flight conveyors, forced-draught and suction fans, air chamber with air inlet hole provided with cyclone installed over flight conveyor to be loaded. Air chamber is arranged between conveyors and is furnished with air collector made in form of screen with cells, housing and brushes from side of conveyors. Additional hole is made in bottom of air chamber to deliver air jet at angle to direction of material movement.
EFFECT: device of simple design providing effective and safe reloading of rock from one conveyor to the other installed at one level.
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: method includes partial filling of extracted space of side and central mains by filling stripes from lava extracting shafts. At center of semi-lava on the side of massive, wherein next extractive column will be cut, filling shaft is additionally driven, wherefrom full filling of space between central fill stripe and fill stripe on the side of massive is performed. Preparation of next extraction column is performed under protection of erected fill stripes.
EFFECT: higher safety, higher efficiency.
FIELD: mining industry.
SUBSTANCE: method includes erection of rows of main platforms along bed length in staggered order with length equal or divisible by step value for support displacement, and placing filling material thereon. Along length of main platforms between ceiling and bed soil post support is mounted, upon which filling material is fed. After that between main platforms additional platforms are erected with wedge supporting, and main platforms are rotated counter-clockwise towards pneumatic support and it is displaced for one drive step. During that filling material, while lowering, unwedges wedge support between ceiling and bed soil and forms artificial supports. After that additional platforms are rotated counter-clockwise towards pneumatic support. After movement of cleaning face for two drive steps operations for constructing artificial supports are repeated. Distance between main platforms along bed fall line are selected from mathematical expression.
EFFECT: higher efficiency.
FIELD: mining industry.
SUBSTANCE: invention relates to vibrating facilities and it can be used for letting out ore or other materials and their separation. Proposed vibrating feeder has resilient supports, working member consisting of charging and discharge parts and vibrating drive consisting of two shafts with unbalance weight and motors, one per each unbalance weight. Place of arrangement of vibrating drive is determined basing on the fact that line of connection of axles of unbalance weights is located in area limited by two straight lines square to direction of vibration, one of which passed through center of mass, and the other is located at a distance from center of mass of 1/10L to side of charging part of working member. Axle of unbalance weights are located at different sides from line of direction of vibration passing through center of mass at distance equal to not less than 1/8 where L is distance between resilient supports in horizontal direction.
EFFECT: improved stability of operation of vibrating feeder at unstable supply and impact loads on working member at discharging.
FIELD: mining industry.
SUBSTANCE: method includes preparation and well extraction of resources of chambers with partial backfill of extraction space. Blocks of upper level relatively to blocks of lower level are placed in staggered order, while blocks are made in form of a stretched upwards hexahedron. Resources of block within one hexahedron are separated on two chambers, one of which, placed along periphery of hexahedron, after extraction and removal of ore from it is filled by hardening backfill. Second order chamber is made of hexahedron-like shape, extracted and removed under protection from artificial block on all six sides of this chamber. Removal of ore from first order chambers is performed through one removal mine - end of level ort and cross-cut in lower portion of block and intermediate sub-level cross-cuts.
EFFECT: higher efficiency.