CN202520354U - Closed-loop control system of mine ventilator - Google Patents
Closed-loop control system of mine ventilator Download PDFInfo
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- CN202520354U CN202520354U CN2012201667945U CN201220166794U CN202520354U CN 202520354 U CN202520354 U CN 202520354U CN 2012201667945 U CN2012201667945 U CN 2012201667945U CN 201220166794 U CN201220166794 U CN 201220166794U CN 202520354 U CN202520354 U CN 202520354U
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Abstract
The utility model provides a closed-loop control system of a mine ventilator and aims to solve the problems that electric energy is wasted, and potential safety hazards exist because the working state of the conventional ventilator cannot be self-adjusted according to the on-site environment. The closed-loop control system comprises fans, frequency converters and programmable logic controllers, wherein each programmable logic controller is provided with a feedback signal acquisition unit; and the fans, the frequency converters, the programmable logic controllers and the negative feedback signal acquisition units form closed-loop control units. By the closed-loop control system, data such as concentration of mine gas and wind pressure of the fans can be acquired in real time, and the rotation speeds of the fans are subjected to closed-loop control, so that the intelligent degree is increased, and the electric energy is effectively saved; and each fan is provided with an overvoltage, undervoltage and overtemperature protective device, and when one fan has an overvoltage, undervoltage or overtemperature phenomenon, the fan can be automatically switched to another fan, so that the fans can be switched intelligently under the failure condition; and therefore, air can be supplied to a mine by the fans in real time, and the safety coefficient of staff is guaranteed.
Description
Technical field
The utility model relates to blower fan automatic control control field, and a kind of coalmine ventilation machine closed-loop control system is provided.
Background technology
Mine ventilation is continuously to be sent to the down-hole to the ground fresh air respectively with wind place (getting working face, chamber etc.); Its objective is dilution and get rid of pernicious gas and mine dust; The personnel in the pit is provided required oxygen, creates good weather conditions simultaneously.Mine ventilation is to ensure one of topmost technological means of mine safety." safety regulations in coal mine " regulation: mine must adopt mechanical ventilation; Must be equipped with the main ventilation fan of two same models, an operation, one is subsequent use; Mine must have the complete and independent ventilation system, must appraise and decide mine output by actual air volume, i.e. " with the wind fixed output quota ".Whether mine ventilation system reasonable, to the quality of whole mine ventilation condition with can ensure that mine safety production plays an important role, should under the prerequisite that guarantees safety in production, reduce the ventilation expense simultaneously, make every effort to economical rationality.Ventilation fan is the capital equipment of mine ventilation system, is used for the ventilation of mine down-hole, improves the condition of work and the air quality of down-hole, guarantees Mine Safety in Production.
When the type selecting of main fan in mine, except considering the safety in colliery itself, maximum numbers of promptly working simultaneously by the down-hole, mine gas and other waste gas calculate institute's required airflow; Also considered the sustainable development property in colliery; Be that the requirement of expansion to air quantity constantly exploited in the colliery; And not the matching of ventilation fan characteristic and mine ventilation characteristic, causing that main ventilation fan type selecting is bigger than normal, fan delivery is higher, capacity motor is bigger than normal, fan delivery can not be regulated according to the needs of production scene automatically; Make blower fan be in the running status of " low load with strong power ", fan operation inefficiency for a long time; Existing main fan in mine generation fan bearing in service temperature is too high, blower fan current overload, blower voltage overvoltage, under-voltage; During faults such as electric power system phase shortage; Can not in time find and take counter-measures such as blower fan shutdown; Fan bearing and blower motor are damaged; Cause than large economy and lose: existing main fan in mine is in service can not monitor air quantity and the wind speed of mine main return airway, can not blow by snap back when accidents such as, gas explosion outstanding at coal mine generation gas, coal-dust explosion need reverse air-supply.
The utility model content
The purpose of the utility model be to provide a kind of can be according to condition mine working environment, equipment working state is braked a kind of coalmine ventilation machine closed-loop control system of the duty of control, conditioning equipment.
For realizing that above-mentioned purpose the utility model adopts following technical scheme:
A kind of coalmine ventilation machine closed-loop control system; The programmable logic controller (PLC) that comprises the frequency converter of blower fan, control blower fan rotating and rotating speed, the output frequency of frequency converter is controlled; It is characterized in that: said programmable logic controller (PLC) disposes the feedback signal collecting unit, and said blower fan, frequency converter, logic controller and negative-feedback collecting unit constitute the closed-loop control unit.
Say that further said negative-feedback collecting unit comprises the gas concentration sensor that is used to detect gas density, is used to detect the pressure transmitter of blast.
Say that further said gas concentration sensor and programmable logic controller (PLC) constitute the positive feedback closed-loop control, said pressure transmitter and the control of programmable logic controller (PLC) formation negative feedback closed loop that is used to detect blast.
Further say, also comprise air door, said air door is provided with the position switch that detects its on off state, and said position switch is given programmable logic controller (PLC) with the switch state signal of air door.
Say that further comprise that also parallel connection is arranged on the voltage relay on the input electrical network, said voltage relay is connected with programmable logic controller (PLC), gives programmable logic controller (PLC) with overvoltage signal or under-voltage signal.
Say that further also comprise being arranged on the temperature pick up that is used to detect the fan shaft temperature on the blower fan, said temperature pick up is given connected programmable logic controller (PLC) with the temperature signal that collects.
Further say, comprise that at least 2 covers constitute the closed-loop control unit by blower fan, frequency converter, programmable logic controller (PLC) and negative-feedback collecting unit, and the programmable logic controller (PLC) of each closed control circuit forms interlocking.
Further say, dispose the initialize routine that is used to switch each closed-loop control unit in the said programmable logic controller (PLC).
Say that further said programmable logic controller (PLC) switches each closed-loop control unit according to the feedback signal of voltage relay, temperature pick up.
The utlity model has following beneficial effect:
The utility model adopts Closed loop Control; Gather data such as mine gas concentration, fan pressure in real time rotation speed of fan is carried out closed-loop control, increased the intelligent degree of equipment, effectively practiced thrift electric energy; And blower fan is provided with overvoltage, under-voltage, high temperature protection device; When overvoltage, under-voltage or temperature is too high appears in a typhoon machine unit, can automatically switch to another typhoon machine, realized that intelligence is switched blower fan under the failure condition; Making can have the blower fan air-supply under the mine in real time, has guaranteed staff's safety factor under the mine.
Description of drawings
Fig. 1 is the closed-loop control figure of the utility model.
The specific embodiment
The programmable logic controller (PLC) that the utility model closed-loop system as shown in Figure 1 comprises the frequency converter of blower fan, control blower fan rotating and rotating speed, the output frequency of frequency converter is controlled; Be used to gather the feedback collecting unit of feedback signal, the feedback collecting unit of gathering feedback signal comprises gas concentration sensor and pressure transmitter.
Said programmable logic controller (PLC), frequency converter, blower fan, gas concentration sensor constitute positive feedback closed loop C1; And closed loop C1 is made as limit priority, and said gas concentration sensor is used to gather the gas density feedback signal, when gas density surpass preset value, or when rising; The gas density signal feedback is given programmable logic controller (PLC); The control rotation speed of fan was accelerated after programmable logic controller (PLC) carried out the PID computing, promptly increased the blow rate required of blower fan, reduced gas density.
Said programmable logic controller (PLC), frequency converter, blower fan, pressure transmitter constitute negative feedback closed loop C2; And closed loop C2 priority is lower than closed loop C1; Promptly when gas density was too high, closed loop C2 did not work, when gas density is lower than preset value or stable and does not rise; The pressure transmitter of closed loop C2 is given programmable logic controller (PLC) with wind pressure signal, and this closed loop C2 reduces rotating speed and reaches purpose of energy saving if blast is higher than preset value (being the air blast size).
The utility model comprises that at least 2 covers constitute closed-loop control unit i.e. a cover operation blower fan system, a cover standby fan system by blower fan, frequency converter, programmable logic controller (PLC) and feedback collecting unit; And the programmable logic controller (PLC) of each closed control circuit forms interlocking, promptly moves blower fan system and standby fan system and forms interlocking.
And every cover blower fan system is equipped with air door; Air door is provided with the position switch that is used to detect its on off state; Said position switch is given programmable logic controller (PLC) with the switch state signal of air door, respectively overlaps the interlocking of the air door of blower fan system through PLC controls.The second cover air door just can open when promptly the air door of the first cover blower fan system was closed; The air door of second cover is closed, and the air door of first cover just can be opened.
And every cover blower fan system also comprises being connected in parallel on and is arranged on the voltage relay of input on the electrical network, and said voltage relay is connected with programmable logic controller (PLC), with the overvoltage signal perhaps under-voltage signal give programmable logic controller (PLC).Also comprise being arranged on the temperature pick up that is used to detect the fan shaft temperature on the blower fan, said temperature pick up is given connected programmable logic controller (PLC) with the temperature signal that collects.Programmable logic controller (PLC) switches each closed-loop control unit according to the feedback signal of voltage relay, temperature pick up.Promptly move the urgent automatic switching function of blower fan and standby fan.When the operation blower fan breaks down can not continue to move the time, when sending sound and light alarm, system implements urgent automatic switching function.
Dispose the initialize routine that is used to switch each closed-loop control unit in the programmable logic controller (PLC), after a cover blower fan system operation after a time, automatically switch to another set of blower fan system.
Now general frequency converter can both the better controlled motor positive and inverse, and when emergency needed inverted ventilation, operating personnel only need press " stopping " button earlier, by " counter-rotating " button, can realize inverted ventilation again.Carry out interlocking between inverted ventilation operation and the normal operation, guarantee safety and reliability that both move.
And be provided with the emergency start switch between blower fan and the electrical network; When closed-loop system breaks down, in the time of like problems such as frequency converter failure, programmable logic controller (PLC) fault, sensor faults, can blower fan directly be inserted electrical network; Insert the power frequency electric energy of 50Hz, guarantee the operation of motor.
Claims (10)
1. coalmine ventilation machine closed-loop control system; The programmable logic controller (PLC) that comprises the frequency converter of blower fan, control blower fan rotating and rotating speed, the output frequency of frequency converter is controlled; It is characterized in that: said programmable logic controller (PLC) disposes the feedback signal collecting unit, and said blower fan, frequency converter, logic controller and negative-feedback collecting unit constitute the closed-loop control unit.
2. a kind of coalmine ventilation machine closed-loop control system according to claim 1, it is characterized in that: said negative-feedback collecting unit comprises the gas concentration sensor that is used to detect gas density, is used to detect the pressure transmitter of blast.
3. a kind of coalmine ventilation machine closed-loop control system according to claim 2; It is characterized in that: said gas concentration sensor and programmable logic controller (PLC) constitute the positive feedback closed-loop control, said pressure transmitter and the control of programmable logic controller (PLC) formation negative feedback closed loop that is used to detect blast.
4. a kind of coalmine ventilation machine closed-loop control system according to claim 3 is characterized in that: said gas concentration sensor and programmable logic controller (PLC) constitute positive feedback closed-loop control priority and are higher than said pressure transmitter and the control of programmable logic controller (PLC) formation negative feedback closed loop that is used to detect blast.
5. a kind of coalmine ventilation machine closed-loop control system according to claim 1; It is characterized in that: also comprise air door; Said air door is provided with the position switch that detects its on off state, and said position switch is given programmable logic controller (PLC) with the switch state signal of air door.
6. a kind of coalmine ventilation machine closed-loop control system according to claim 1; It is characterized in that: also comprise being connected in parallel on the voltage relay that is arranged on the input electrical network; Said voltage relay is connected with programmable logic controller (PLC), gives programmable logic controller (PLC) with overvoltage signal or under-voltage signal.
7. a kind of coalmine ventilation machine closed-loop control system according to claim 1; It is characterized in that: also comprise being arranged on the temperature pick up that is used to detect the fan shaft temperature on the blower fan, said temperature pick up is given connected programmable logic controller (PLC) with the temperature signal that collects.
8. according to the described a kind of coalmine ventilation machine closed-loop control system of the arbitrary claim of claim 1-7; It is characterized in that: comprise that at least 2 covers constitute the closed-loop control unit by blower fan, frequency converter, programmable logic controller (PLC) and negative-feedback collecting unit, and the programmable logic controller (PLC) of each closed control circuit forms interlocking.
9. a kind of coalmine ventilation machine closed-loop control system according to claim 8 is characterized in that: dispose the initialize routine that is used to switch each closed-loop control unit in the said programmable logic controller (PLC).
10. a kind of coalmine ventilation machine closed-loop control system according to claim 8 is characterized in that: said programmable logic controller (PLC) switches each closed-loop control unit according to the feedback signal of voltage relay, temperature pick up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201667945U CN202520354U (en) | 2012-04-19 | 2012-04-19 | Closed-loop control system of mine ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201667945U CN202520354U (en) | 2012-04-19 | 2012-04-19 | Closed-loop control system of mine ventilator |
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| Publication Number | Publication Date |
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| CN202520354U true CN202520354U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201667945U Expired - Lifetime CN202520354U (en) | 2012-04-19 | 2012-04-19 | Closed-loop control system of mine ventilator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148007A (en) * | 2012-11-27 | 2013-06-12 | 洛阳源创电气有限公司 | Mine ventilating fan control system capable of automatically adjusting air quantity |
| CN104678992A (en) * | 2015-01-29 | 2015-06-03 | 西安科技大学 | Method for detecting stability and economic property of mining main ventilator in real time |
| CN107489456A (en) * | 2017-08-21 | 2017-12-19 | 叶军 | A kind of gas monitor based on Programmable logical controller |
| CN108087317A (en) * | 2018-01-24 | 2018-05-29 | 洛阳智超机电科技有限公司 | A kind of Mine Ventilator air pressure air flow balance switching intelligence control system |
| CN113323705A (en) * | 2021-07-20 | 2021-08-31 | 淮南矿业(集团)有限责任公司 | Mine hoisting main ventilator fault switching method |
-
2012
- 2012-04-19 CN CN2012201667945U patent/CN202520354U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148007A (en) * | 2012-11-27 | 2013-06-12 | 洛阳源创电气有限公司 | Mine ventilating fan control system capable of automatically adjusting air quantity |
| CN104678992A (en) * | 2015-01-29 | 2015-06-03 | 西安科技大学 | Method for detecting stability and economic property of mining main ventilator in real time |
| CN107489456A (en) * | 2017-08-21 | 2017-12-19 | 叶军 | A kind of gas monitor based on Programmable logical controller |
| CN108087317A (en) * | 2018-01-24 | 2018-05-29 | 洛阳智超机电科技有限公司 | A kind of Mine Ventilator air pressure air flow balance switching intelligence control system |
| CN113323705A (en) * | 2021-07-20 | 2021-08-31 | 淮南矿业(集团)有限责任公司 | Mine hoisting main ventilator fault switching method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHONGQING FEIERDA ELECTRICAL CO., LTD. Free format text: FORMER NAME: CHONGQING FIND MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 401327 the Jiulongpo District of Chongqing Municipality Gu Zhen Jing Long Industrial Park Patentee after: CHONGQING FIND MACHINERY CO., LTD. Address before: 401327 the Jiulongpo District of Chongqing Municipality Gu Zhen Jing Long Industrial Park Patentee before: Chongqing Find Machinery Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 402566, 30 Longshan Road, Pu Lu Town, Tongliang County, Chongqing Patentee after: CHONGQING FIND MACHINERY CO., LTD. Address before: 401327 the Jiulongpo District of Chongqing Municipality Gu Zhen Jing Long Industrial Park Patentee before: CHONGQING FIND MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: No. 30, Longshan Avenue, Pu Lu street, Tongliang District, Chongqing (Industrial Park) Patentee after: Chongqing feierda ventilation equipment Limited by Share Ltd Address before: 402566, 30 Longshan Road, Pu Lu Town, Tongliang County, Chongqing Patentee before: CHONGQING FIND MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
|
| CX01 | Expiry of patent term |