CN207538849U - A kind of mine emergency local ventilation device - Google Patents
A kind of mine emergency local ventilation device Download PDFInfo
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- CN207538849U CN207538849U CN201721694553.7U CN201721694553U CN207538849U CN 207538849 U CN207538849 U CN 207538849U CN 201721694553 U CN201721694553 U CN 201721694553U CN 207538849 U CN207538849 U CN 207538849U
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- fan
- power supply
- stand
- air blower
- local ventilation
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Abstract
The utility model discloses a kind of mine emergency local ventilation device, is made of electric power system, control system, main air blower, standby fan, DC fan；Wind turbine is both connected on air duct at three.Electric power system is made of main line and switching switch, and main line is connected to switching switch, and switching switch is connect by separated time with main air blower, standby fan respectively.Battery is additionally provided with, battery is powered for DC fan；It is charged by main line for battery.Control system is connected to control substation by monitoring center and forms, and controls and power sensor is connected on substation, and power sensor samples the power supply of separated time, and control substation is connect with flame-proof switch, for controlling the break-make between stand-by power supply and DC fan.The utility model greatly strengthens the reliability of local ventilation system, gas exceeding limit and related accidents caused by being greatly decreased therefore.Using direct current generator, power supply can be accessed directly at battery, without inversion system, simple circuit.
Description
Technical field
The utility model is specifically related to a kind of coal mine roadway part emergency ventilation device.
Background technology
According to statistics, 80% probability of gas explosion that underground coal mine occurs is related with local ventilation.Pre- anti-gas explosion
Emphasis should be the driving face using local ventilation, most of with part in the gas accident caused by the local ventilation problem
Ventilation blower shuts down related.Therefore how research improves the reliability of local ventilation, reduces blowing-out number as far as possible, to prevention
Gas accident is of great significance.
With the development of mine machinery, electrical equipment especially high-power electric appliance equipment is more and more, these are high-power
When power supply unit works together, the problem of harmonic component of generation can cause low quality to be powered, this can be to detecting system and electromechanics
Protection system has an impact, and causes to malfunction, and causes to trip, so as to influence powered stable；In addition ground wind and rain thunder and lightning and failure
Tripping inevitably leads to two fans, and dead electricity is stopped simultaneously, influences the reliability of local ventilation, threatens ventilating gas peace
Entirely.For this purpose, further research improves local ventilation reliability, protect it from wind and rain thunder and lightning and avoid the shadow used by other equipment
It rings, still has a very important significance；Pseudo- tiltedly flexible type shield coal-mining method production practice of especially bowing needs Construction of Inclined
Upward advanced ommatidium once power failure blowing-out, is influenced by gas density is lighter-than-air, even if seldom gas emission is very
Methane accumulation is also resulted in the short blowing-out time in moraine head, leads to gas exceeding limit, serious threat mine ventilation and operating personnel
Safety.
《Safety of Coal Mine Production standardizes basic demand and methods of marking (tentative)》Aeration portion provides：" no plan blowing-out 1
Secondary 10 points of button ", can at most detain 35 points；And《(tentative) the regulation mine safety life of Safety of Coal Mine Production standardization examination deciding grade and level method
Production standardization must reach more than three-level, not stop producing immediately up to the mine of grade.This means that it sends three times and above without plan
Blowing-out mine must suspend operations for consolidation.This also embodies the attention of management of the China to local ventilation.The coal mining enterprise of falling Bi Zhe strengthens
Power supply and partial Ventilation Management improve the reliability of local ventilation.
Therefore, under the safety management idea of " gas exceeding limit is exactly accident ", the requirement to local ventilation is very high, so must
Reliability, the redundancy of local ventilation power supply and booster must be improved.
However, in present mining technique, lack it is more excellent can significantly improve local ventilation reliability, redundancy it is logical
Wind technology, guarantee are reliably divulged information under any circumstance when needing local ventilation.
Utility model content
The purpose of the utility model is to overcome the shortcomings that the prior art, providing a kind of mine emergency local ventilation device,
To solve the technical issues of aeration technology in existing mining lacks more reliable property and redundancy.
To achieve the above object, technical solution adopted in the utility model is as follows：
A kind of mine emergency local ventilation device provided by the utility model is filled by electric power system, control system, wind turbine
The air duct that put, is connected on blower fan apparatus is formed, and blower fan apparatus is by the main air blower of normal operation, main air blower without being opened after planned shut-down
Dynamic standby fan and main air blower are formed with the DC fan that standby fan is run without planned shut-down；It is main air blower, spare
Wind turbine, DC fan are both connected on air duct.
The electric power system is made of main line and switching switch, and main line is connected to switching switch, and switching switch is by dividing
Line is connect respectively with main air blower, standby fan.
Stand-by power supply is additionally provided with, stand-by power supply connect with DC fan and is DC fan power supply；Stand-by power supply and master
Line connects, and is charged by main line for stand-by power supply.
The control system is connected to control substation by monitoring center and forms, and controls and power supply sensing is connected on substation
Device, power sensor are arranged on separated time, and the power supply of separated time is sampled, and control substation is connect with flame-proof switch.
Flame-proof switch is arranged between stand-by power supply and DC fan, for controlling between stand-by power supply and DC fan
Break-make.
A kind of mine emergency local ventilation device as described above, specifically, the stand-by power supply is battery.
A kind of mine emergency local ventilation device as described above, specifically, the power sensor is mining equipment
On-off transducer.
A kind of mine emergency local ventilation device as described above, specifically, the separated time that is connect with main air blower and with it is spare
The separated time of wind turbine connection is also cross mining equipment on-off transducer.
A kind of mine emergency local ventilation device as described above, specifically, the monitoring center is mine total activation
Central computer server.
The beneficial effects of the utility model are：
1st, for stand-by power supply not by ground wind and rain thunder and lightning and network load influence of fluctuations, reliability is high, can prevent no meter substantially
The influence having a power failure to local ventilation system is drawn, greatly strengthens the reliability of local ventilation system, can be greatly decreased therefore cause
Gas exceeding limit and related accidents.
2nd, without being laid with cable to place to use from other places, power supply distance is short, and maintenance workload is small, economic and practical.
3rd, the system can be realized from the full-automation for being charged to portable blower and being turned on and off, and intervened substantially without personnel, reliably
Property it is high, live adaptability is good.
4th, using direct current generator, power supply can be accessed directly at battery, without inversion system, simple circuit.
Description of the drawings
Fig. 1 is structure diagram.
Specific embodiment
It is specific below in conjunction with the utility model to make the purpose of this utility model, technical solution and advantage clearer
Technical solutions of the utility model are clearly and completely described in embodiment and corresponding attached drawing.
The coal mine of the present embodiment operation is highly gassy mine, and mine whole year gas absolute discharge is 18.986m3/min,
Relative amount of mine gas emission is 26.941m3/t；The absolute outburst amount of carbon dioxide is 6.97m3/min, relative amount of mine gas emission 9.891m3/t.
Mine ventilation mode is that central march-past is divulged information, and method of ventilation is mechanical extraction.Its coal working face U-typed is divulged information, driving
Working face uses forced ventilation.
The ventilating system of the present embodiment is mounted in coal cutting roadway, and to adopt face ommatidium air feed, it is maximum absolutely to adopt face ommatidium
Gas emission is 0.75m3/min, all using forced local ventilation.Main air blower is mounted in headentry air intake,
Once main air blower blowing-out, it is easy to methane accumulation and transfinite.
In order to adapt to above-mentioned technological accumulation and inheritance, the present embodiment is as follows：
With reference to figure 1, the utility model is by electric power system, control system, blower fan apparatus, the air duct being connected on blower fan apparatus
It forms.
The alternating current that electric power system is 660V inputs, which includes the power supply that connect with dynamical system and independent
For the power supply of wind turbine access, it is dual power supply input system, prevents power electric dead electricity, shadow caused by coal excavation apparatus is to the impact of power
It rings to the power supply to blower fan apparatus.
Main air blower：Main air blower selects the wind turbine of two FBD-2No-5 types 7.5kw, air quantity 274-124m3/min, wind
354-3573pa is pressed, ensures that the air quantity in coal cutting roadway is not less than 160m3/min.
Standby fan：Required airflow 75m3/min in coal cutting roadway, it is 80m3/min that standby fan, which needs to suck air quantity, is worked
Total head is 1343Pa.Therefore select 4/4.4 type wind turbines of FBD2*2.2kw № that can reach requirement.The total pressure of fan is 251-
2156Pa, fan delivery 136-72m3/min.
DC fan：The direct current fire-proof motor of coal peace mark is selected, the use of power supply is DC power supply.In main air blower and spare
When wind turbine is stopped transport, then enter operation in coal cutting roadway without personnel, air quantity is calculated by gas emission：If coal working face gas
Outburst amount is up to 0.75m3/min so far, and gas is no more than 1% and calculates during divulging information according to coal mining ommatidium：Required airflow
75m3/min, it is 80m3/min that DC fan, which needs to suck air quantity, and work total head is 1343Pa.
Switching switch is automatic control technology, using contactor, and using the mode of interlock switch, in power supply and load
Between switch over operation.Its effect includes：
1st, it is switched in the power supply being connect with dynamical system and between being individually for the power supply of wind turbine access.Because of two power supplys
Between be outside independent access well, therefore the operating mode of two power supplys is different, because dynamical system power supply stability is poor, impact compared with
Greatly, therefore in normal work, electricity is taken using the power supply for being individually for wind turbine access.When the power loss for being individually for wind turbine access,
Switching switch is switched to the power supply being connect with dynamical system and powers for wind turbine.
2nd, when main air blower breaks down, it is impossible to which when running, power supply is connect by switching switch with standby fan, starts spare wind
Machine.
Battery is connect with DC fan, and is powered for DC fan；Battery is connect with main line, is charged by main line for battery.
Flame-proof switch is set between battery and DC fan, for controlling the break-make between battery and DC fan.Using mining anti-
The anti-explosion battery group of quick-fried battery locomotive or other anti-explosion batteries with coal peace mark of customization are as battery, to explosion-proof direct current
Motor is powered.Anti-explosion battery can install automatic charging system additional, realize fully automated management, it is ensured that system reliability.
Control system is connected to control substation by monitoring center and forms, and monitoring center takes for mine total activation central computer
Business device.Mining equipment on-off transducer is connected on control substation, mining equipment on-off transducer is arranged on separated time, and to dividing
The power supply sampling of line, control substation are connect with flame-proof switch.
The mining on-off transducers of GKT5L can be selected, on-off transducer that GKT5L is mining is mainly for detection of underground electromechanical equipment
The start-stop state of (such as coalcutter, elevator, crusher, main fan, portable blower, water pump, wind turbine transporter), and opened what is detected
Stop signal and be converted into contact point signal, concentrate on mimic panel and computer display and directly display.It can be achieved to face full ore deposit by ground
The start-stop state of electromechanical equipment carries out concentration continuous automatic inspection, and carries out necessary control.
In order to monitor the operating condition of main air blower and standby fan, the separated time being connect with main air blower and and standby fan simultaneously
The separated time of connection is required to also cross mining equipment on-off transducer, and accesses mine total activation center, monitoring main air blower and
Whether standby fan has a power failure simultaneously.Any one ventilation blower of main air blower and standby fan is monitored in there is electricity condition, then automatically
DC fan power supply is cut off, DC fan is inoperative.When monitoring main air blower and standby fan while in electroless state, then from
It is dynamic to connect DC fan power supply, DC fan operating and to wind place air feed.In mine vacation plans, it is desirable that main wind
Machine, standby fan, DC fan are stopped, and after main air blower, standby fan stop in order to prevent, system starts direct current automatically
Wind turbine, mine total activation center provide information of having a holiday to control substation, at this point, when control substation receives mining equipment start-stop sensing
Main air blower that device obtains, after standby fan halted state signal, control substation no longer sends closure signal to flame-proof switch.
The above embodiment is used for illustrating the utility model rather than limiting the utility model, in this reality
With in novel spirit and scope of the claims, to any modifications and changes that the utility model is made, this is both fallen within
The protection domain of utility model.
Claims (5)
1. a kind of mine emergency local ventilation device by electric power system, control system, blower fan apparatus, is connected on blower fan apparatus
Air duct form, which is characterized in that the blower fan apparatus is by the main air blower of normal operation, main air blower without starting after planned shut-down
Standby fan and the DC fan that is run without planned shut-down of main air blower and standby fan form；Main air blower, spare wind
Machine, DC fan are both connected on air duct；
The electric power system is made of main line and switching switch, and main line is connected to switching switch, and switching switch passes through separated time point
It is not connect with main air blower, standby fan；
Stand-by power supply is additionally provided with, stand-by power supply connect with DC fan and is DC fan power supply；Stand-by power supply connects with main line
It connects, is charged by main line for stand-by power supply；
The control system is connected to control substation by monitoring center and forms, and controls and is connected with power sensor on substation, electricity
Source sensor is arranged on separated time, and the power supply of separated time is sampled, and control substation is connect with flame-proof switch；
Flame-proof switch is arranged between stand-by power supply and DC fan, logical between stand-by power supply and DC fan for controlling
It is disconnected.
2. a kind of mine emergency local ventilation device as described in claim 1, which is characterized in that the stand-by power supply is electricity
Pond.
3. a kind of mine emergency local ventilation device as described in claim 1, which is characterized in that the power sensor is
Mining equipment on-off transducer.
4. a kind of mine emergency local ventilation device as described in claim 1 or 3, which is characterized in that connect with main air blower
Separated time and the separated time that is connect with standby fan are also cross mining equipment on-off transducer.
5. a kind of mine emergency local ventilation device as described in claim 1, which is characterized in that the monitoring center is ore deposit
Mountain total activation central computer server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721694553.7U CN207538849U (en) | 2017-12-07 | 2017-12-07 | A kind of mine emergency local ventilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721694553.7U CN207538849U (en) | 2017-12-07 | 2017-12-07 | A kind of mine emergency local ventilation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207538849U true CN207538849U (en) | 2018-06-26 |
Family
ID=62617488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721694553.7U Active CN207538849U (en) | 2017-12-07 | 2017-12-07 | A kind of mine emergency local ventilation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207538849U (en) |
-
2017
- 2017-12-07 CN CN201721694553.7U patent/CN207538849U/en active Active
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