CN102889092B - Multi-stage station ventilation technical system of mine - Google Patents
Multi-stage station ventilation technical system of mine Download PDFInfo
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- CN102889092B CN102889092B CN201210420179.7A CN201210420179A CN102889092B CN 102889092 B CN102889092 B CN 102889092B CN 201210420179 A CN201210420179 A CN 201210420179A CN 102889092 B CN102889092 B CN 102889092B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 92
- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 238000005265 energy consumption Methods 0.000 claims description 9
- 244000025254 Cannabis sativa Species 0.000 claims description 7
- 240000000233 Melia azedarach Species 0.000 claims description 4
- 230000009931 harmful effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 231100000331 toxic Toxicity 0.000 claims description 3
- 230000002588 toxic effect Effects 0.000 claims description 3
- 230000000153 supplemental effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 9
- 238000007726 management method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Abstract
The invention discloses a multi-stage station ventilation system of a mine. A level-I station (1) is arranged in a main air inlet alley; a level-II station (2) is arranged in an air inlet courtyard connection ally; a level-III station (3) is arranged in an air return courtyard connection ally; a level-IV station (4) is arranged in a main air return ally; a plurality of stages (more than or equal to 3) of the stations are connected in series and in parallel; ventilation stations of the same state are connected in parallel; different stages of stations are connected in series; a plurality of fans are connected in series and in parallel in the ventilation stations; the number of stages and the positions of the stations are determined; the types of the fans are selected, and the air volumes of the fans are adjusted; a mine ground main monitoring room (12) is arranged on the ground of the mine; and a multi-stage station remote concentrated monitoring system and an underwell atmosphere environment on-line monitoring system are constructed. Constant-pressure ventilation of each ventilation network section of the mine can be realized, and air leakage is reduced; a plurality of stages of underwell stations can be started and stopped remotely; the frequencies and speeds of the fans can be converted and adjusted, and system air return is realized; running states of the fans, air volume and air pressure of the fans, temperature of a motor bearing and power factors are monitored in real time; and an underwell ventilation environment can be monitored in real time and on line.
Description
Technical field
The present invention relates to a kind of underground mine mine ventilation technology, especially relate to a kind of multi fan station ventilation system technology, can be widely used in the mine ventilation system of underground mine exploitation.
Background technology
The multistage machine of mine station aeration technology is to use pressure balance principle to carry out pressure ventilation to mine ventilation system, its basic characteristics are: keeping under the prerequisite of each wind path Air Quantity Required, by the setting to multimachine station, down-hole multi fan and regulation and control (start and stop of blower fan, blower fan running rotating speed), realize each branch wind path pressure balance, respectively leak out two end points of wind path blast equate, be surface air leakage point to keep differential pressure be zero, leak out and to keep a blast to equate in inside.
Compared with large main fan ventilation system, multi fan station ventilation system can make that ventilation pressure is evenly distributed, inleakage reduces, effective of wind amount rate improves, ventilation Energy Intensity Reduction, and distinguished and admirable control is simple, air quantity flexible adjustment, can be according to producing the needs unlatching to ventilating or stopping some blower fan or some machine station, or adopt variable-frequency governor to carry out the adjusting of fan condition, thereby when satisfied production needs wind, save to greatest extent ventilation energy consumption, reduce ventilation expense.
Because machine station and blower fan quantity that multi fan station ventilation system needs are more, and each machine station is distributed in the vast region of whole ventilation network, and mine multi fan station ventilation system is existed to following subject matter: the sum of series position at (1) machine station definite; (2) flowing resistance calculating, allocation of the amount of air under ventilation network; (3) Fan Selection; (4) management of multimachine station multi fan and underground ventilating monitoring.
Summary of the invention
Object of the present invention is exactly to manage difficult problem in order to solve the machine station sum of series location positioning, flowing resistance calculating, allocation of the amount of air, Fan Selection and the multimachine station multi fan that exist in prior art, realizes that the pressure ventilation of the each ventilation network section of mine, distinguished and admirable control and flexible adjustment, effective of wind amount rate are high, ventilation effect is estimated the mine multi fan station ventilation system that property is strong, ventilation energy consumption is low and provide a kind of.
For realizing above-mentioned purpose of the present invention, mine multi fan station ventilation system of the present invention, by the following technical solutions:
Mine multi fan station ventilation system of the present invention comprises main downcast, main air intake lane, air intake courtyard, return air raise, return airway, main return airway, main returnairshaft, described main downcast and main air intake lane are connected, air intake courtyard is connected by Qi Lian lane and main air intake lane, and return air raise is connected by Qi Lian lane and return airway; Return airway, main return airway, main returnairshaft order UNICOM, arrange the total Control Room of grass on the earth's surface of mine.
1) machine station sum of series location positioning
Main air intake lane at mine wind inlet section arranges I level machine station, supplies with mine fresh distinguished and admirable, is main air inlet fan station; In the air intake courtyard Lian lane, exploiting field that needs wind section, II level machine station being set, is auxiliary air inlet fan station; In the return air raise Lian lane that needs wind section, III level machine station is set, as auxiliary return fan station; II level machine station and III level machine station owner will play auxiliary adjustment effect to Mining Area air quantity.At main return airway, IV level machine station being set, is main return fan station, discharges the whole dirty wind in down-hole; Described I～IV level machine station is arranged in parallel machine at the same level station, series connection arranges handsets at different levels station, and in machines at different levels station, series and parallel is installed many Fans, maximum 2 of series connection blower fan quantity, and parallel fan quantity is 1～3;
Level Four machine station is typical multi fan station ventilation system, multistage (>=3) machine station series and parallel relay arranged in form, and ventilation fan at the same level station is arranged in parallel, and the series connection of machine not at the same level station arranges.
Determining of machine station location, will consider on the one hand in ventilation system that pressure distribution situation is beneficial to control the dirty wind of mine, also to consider simultaneously between the each system in down-hole interacting and whether convenient in production management.
2) flowing resistance calculating, allocation of the amount of air under ventilation network
Utilize multistage machine station Ventilation Network Solution Software, establishment ventilation network database, comprise mine roadway windage data, network node branch data, fan parameter data, ventilation fan station supplemental characteristic, natural ventilation pressure data, the flowing resistance and the allocation of the amount of air that carry out roadway frictional resistance, local resistance calculate, allocation of the amount of air calculates according to natural splitting net and calculates, and makes ventilation system energy consumption minimum.
Because multistage machine station system ventilation resistance amount of calculation is large, not only needs to calculate the resistance of the each route of maximum resistance route, and will calculate ventilation fans at different levels station resistance.Except calculating frictional resistance, also to calculate tunnel and the local resistance such as turn round, shunt, converge; In multi fan station ventilation system, exist and divide as required wind net, natural splitting net and the wind path that leaks out.Divide as required the air quantity of the each wind path of wind net should be according to the requirement of the smoke evacuation of each setting, dust discharge, first definite by the calculating of air quantity; In natural splitting net, the air quantity of each wind path carries out air quantity by tunnel windage and naturally distributes to resolve and obtain; The inleakage of wind path of leaking out can rule of thumb be estimated.Wherein, the air quantity calculating according to natural splitting net makes ventilation system energy consumption minimum, and the allocation of the amount of air that utilizes multistage machine station Ventilation Network Solution Software to carry out natural splitting net calculates.
3) Fan Selection and air quantity regulate
The blast that the blower fan that multi fan station ventilation system is installed is born is lower, selects mesolow axial flow blower; Multi fan station ventilation system is higher to the stability requirement of blower fan running, selects the blower fan that there is no obvious hump district; The ventilation fan station fixing for required airflow used 1 Fans, and the machine station that required airflow changes greatly adopts 2～3 Fans parallel connections; Windy board is in parallel adopts same model, same size, with the blower fan co-operation of revolution, be conducive to keep the stability of running.For specific mine, meeting under the condition of design, reduce blower fan type and model as far as possible, use convenient for maintaining and management in order to exchanging.At present, in domestic blower fan, can have K and FS series for what select, wherein K serial fan uses morely, in efficiency and stability, substantially can meet design requirement.
According to blower fan frequency and rotation speed of fan, fan delivery, power of fan relation, by regulating blower fan frequency to change rotation speed of fan, reach and change blower fan exhaust air rate and fan energy consumption; Adopting variable-frequency governor motor speed can be the specified maximum speed of blower fan from 0-N r/min(N) regulation and control arbitrarily, thereby reach the exhaust air rate at change machine station and the object of system wind pressure, be beneficial to adjusting and the control of ventilation system, therefore in the time that machine station inner blower is installed, can configure according to actual needs RHVC.
4) management of multimachine station multi fan and underground ventilating monitoring
Because the blower fan quantity of multi fan station ventilation system is many, and be distributed in the vast region of down-hole, so exist air-blower control and the difficult problem of management.In order to give full play to the superiority of multi fan station ventilation system, in the total Control Room of grass arranging on mine earth's surface, have multistage machine station remote centralized monitoring system and down-hole atmospheric environment on-line monitoring system, realize the remote activation of multistage machine station blower fan, stop, frequency control (matched with blower frequency converter), reversion is controlled and current of electric voltage, bearing temperature, the fan operation state parameter monitorings such as power factor (PF), can be to machine station fan delivery, blast, down-hole atmospheric environment is as mine air humiture, oxygen content, the online real-time dynamic monitorings of ventilation parameter such as toxic and harmful.Inverted ventilation requirement when multistage machine station remote centralized monitoring system should be considered air quantity adjusting and have an accident.
Mine multi fan station ventilation system of the present invention adopts has following good effect after above technical scheme:
(1) the distinguished and admirable control of consolidation system, reduces ventilation energy consumption
When large main fan ventilation, specify that by design manual the inside air leakage coefficient of ventilation system is 1.3～1.5, surface air leakage coefficient is 1.1～1.2, and the air quantity of main fan is about 1.4～1.8 times of required airflow.Facts have proved that the inside air leakage coefficient of multi fan station ventilation system design is desirable 1.2～1.25, surface air leakage coefficient is 1.0～1.1, and the fan delivery at maximum machine station is required airflow 1.2～1.38 times.According to air quantity and power of fan relation, reducing leaks out one can make ventilating power reduce 37%～55%.
When the distinguished and admirable roadway windage size of pressing in network is divided timing, its ventilation pressure minimum naturally.Blast in the time that the mine fan pressure that is while ventilating or blower fan each parallel machine station while being located at exploiting field, down-hole of multi-intakes and fans should be quite and equaled natural splitting, just province of its ventilating power.Adopt multi fan station ventilation system, can equilibrium blast, replace regulation wind window regulating system distinguished and admirable, ventilation system is more energy-conservation.
2) simplify the form of structure at machine station, and be convenient to systematic air flow adjusting
In multi fan station ventilation system, mostly adopt the energy-saving fan of single-stage, impeller and motor directly connect, and can inverted running.Therefore can save reversing airway, tangent bend wind cave, retention tower of single large main fan system etc., and the flowing resistance of above-mentioned ventilation installation accounts for full ore deposit resistance significant proportion.Adopt after energy-saving fan, can simplify machine station structure, reduce flowing resistance.Multistage machine station system can or adopt variable frequency control by a few Fans parallel operations due to each machine station, just likely according to production operation requirement, starts different blower fan numbers or blower fan is realized to frequency control and regulate wind supply quantity.
3) the ventilation effect property estimated is strong
Multistage machine station Ventilation Network Solution Software can not only carry out flowing resistance calculating and allocation of the amount of air, and can predict the effect of Design of ventilation, analyzes the situation of the current ventilation system of mine, finds out the section of ventilation weak link and ventilation energy consumption maximum.In the time that mine ventilation system has localized variation (as the cutting in tunnel or sealing) or adopt local modulation measure (as open, blowing-out machine or increase and decrease resistance), can carry out ventilation network simulation and resolve, predict its ventilation effect.
4) multi fan station ventilation system on-line monitoring monitoring
Set up long-distance centralized control and the ventilation monitoring system at multistage machine station, can realize down-hole multilevel machine station blower fan remote activation, stop, frequency control (matched with blower frequency converter), reversion control and the fan operation state parameter monitoring such as current of electric voltage, bearing temperature, power factor (PF), can be to machine station fan delivery, blast, down-hole atmospheric environment as online real-time dynamic monitorings of ventilation parameter such as mine air humiture, oxygen content, toxic and harmfuls.
Brief description of the drawings
Fig. 1 is the level Four machine station ventilation system schematic diagram of mine multi fan station ventilation system of the present invention.
In Fig. 1, be labeled as: 1-I level machine station; 2-II level machine station; 3-III level machine station; 4-IV level machine station; The main downcast of 5-; The main returnairshaft of 6-; The main air intake of 7-lane; 8-return airway; The main return airway of 9-; 10-air intake courtyard; 11-return air raise, the total Control Room of 12-grass.
Detailed description of the invention
For further describing the present invention, below in conjunction with drawings and Examples, mine multi fan station ventilation system of the present invention is described in further detail.
In the ventilation system schematic diagram of the level Four machine station of the mine multi fan station ventilation system of the present invention shown in Fig. 1, mine ventilation system arranges I level machine station 1 in main air intake lane 7, in air intake courtyard 10Lian lane, II machine station 2 is set, in return air raise 11Lian lane, III level machine station 3 is set, at main return airway 9, IV level machine station 4 is set, at grass, the total Control Room 12 of grass is set.
Be expressed as from top to bottom a stage casing, two stage casings, three stage casings in three stage casings shown in Fig. 1.Earth's surface fresh distinguished and admirable along main downcast 5 times to two stage casings, three stage casings.The I level machine station 1 arranging through the main air intake lane 7 in two, three stage casings acts on, enter respectively two, three stage casings along the pulse main transport lane, respectively wear arteries and veins, fresh distinguished and admirable through II machine station 2 along air intake courtyard 10 to each operating location, region and layering, dirty wind after cleaning face enters return airway 8 along return air raise 11 and converges to main return airway 9 under 3 effects of III level machine station, the dirty wind of mine is discharged earth's surface along main returnairshaft 6 under the effect at IV level machine station 4, and underground ventilating is carried out in the series and parallel relay effect of I～IV level machine station.
Wherein I level machine station 1 can be arranged on earth's surface air intake, also can establish down-hole wind inlet section; Determine with leaking out situation with III level machine station 3 Main Basis downhole production at II machine station 2; IV level machine station 4 can arrange earth's surface air outlet, also can establish underground return air section.A little determine according to ventilation route and the leaking out of sub-one-level of sub-one-level at the machine station of sub-one-level (>=4).
In order to strengthen the management of multi fan station ventilation system, set up the total Control Room 12 of grass on mine earth's surface, multimachine station, down-hole multi fan is carried out to long-distance centralized control, realize the monitoring of underground ventilating system real-time dynamic monitoring.
Claims (2)
1. a mine multi fan station ventilation system, comprise main downcast (5), main air intake lane (7), air intake courtyard (10), return air raise (11), return airway (8), main return airway (9), main returnairshaft (6), described main downcast (5) is connected with main air intake lane (7), air intake courtyard (10) is connected by Qi Lian lane and main air intake lane (7), and return air raise (11) is connected by Qi Lian lane and return airway (8); Return airway (8), main return airway (9), main returnairshaft (6) order UNICOM, arrange the total Control Room of grass (12) on the earth's surface of mine, it is characterized in that:
1) machine station sum of series location positioning
Main air intake lane (7) at mine wind inlet section arranges I level machine station (1), is main air inlet fan station; In exploiting field air intake courtyard (10) the Lian lane that needs wind section, II level machine station (2) being set, is auxiliary air inlet fan station; In return air raise (11) the Lian lane that needs wind section, III level machine station (3) is set, as auxiliary return fan station; At main return airway (9), IV level machine station (4) being set, is main return fan station; Described I～IV level machine station is arranged in parallel machine at the same level station, series connection arranges handsets at different levels station, and in machines at different levels station, series and parallel is installed many Fans, maximum 2 of series connection blower fan quantity, and parallel fan quantity is 1～3;
2) flowing resistance calculating, allocation of the amount of air under ventilation network
Utilize multistage machine station Ventilation Network Solution Software, establishment ventilation network database, comprise mine roadway windage data, network node branch data, fan parameter data, ventilation fan station supplemental characteristic, natural ventilation pressure data, the flowing resistance and the allocation of the amount of air that carry out roadway frictional resistance, local resistance calculate, allocation of the amount of air calculates according to natural splitting net and calculates, and makes ventilation system energy consumption minimum;
3) Fan Selection and air quantity regulate
The blower fan that multi fan station ventilation system is installed is selected mesolow axial flow blower and be there is no the blower fan in obvious hump district; The machine station fixing for required airflow used 1 Fans, and the machine station that required airflow changes greatly adopts 2～3 Fans parallel connections; The employing same model of many Fans parallel connection, same size, with the blower fan co-operation of revolution;
According to blower fan frequency and rotation speed of fan, fan delivery, power of fan relation, by regulating blower fan frequency to change rotation speed of fan, reach and change blower fan exhaust air rate and fan energy consumption; Adopt variable-frequency governor motor speed to regulate and control arbitrarily from 0-N r/min, wherein N is the specified maximum speed of blower fan;
4) set up multistage machine station remote centralized monitoring system and down-hole atmospheric environment on-line monitoring system
In the total Control Room of grass (12) arranging on mine earth's surface, have multistage machine station remote centralized monitoring system and down-hole atmospheric environment on-line monitoring system, and be associated with machine station, down-hole, blower fan and ventilated environment.
2. mine multi fan station ventilation system as claimed in claim 1, it is characterized in that: described multistage machine station remote centralized monitoring system can be realized the blower fan start and stop of down-hole multilevel machine station are carried out to Long-distance Control, fan frequency conversion speed governing and system inverted ventilation, to fan operation state, fan delivery blast, motor bearings temperature, power factor (PF) Real-Time Monitoring; Described down-hole atmospheric environment on-line monitoring system comprises the real time on-line monitoring of aerial temperature and humidity, wind speed, blast, toxic and harmful to underground ventilating environment.
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